U.S. patent application number 14/484028 was filed with the patent office on 2016-03-17 for stowage bin with closing force assistance.
The applicant listed for this patent is The Boeing Company. Invention is credited to Mark Edward Eakins.
Application Number | 20160075433 14/484028 |
Document ID | / |
Family ID | 54105706 |
Filed Date | 2016-03-17 |
United States Patent
Application |
20160075433 |
Kind Code |
A1 |
Eakins; Mark Edward |
March 17, 2016 |
STOWAGE BIN WITH CLOSING FORCE ASSISTANCE
Abstract
A method and apparatus for providing a closing force. The
apparatus comprises a stowage bin, a number of sensors that measure
a number of forces on the stowage bin, an assist mechanism that
provides a closing force, a controller that compares data from the
number of sensors, and an adjustment mechanism that adjusts the
closing force based on the data from the number of sensors. The
assist mechanism has a mechanical advantage that changes to provide
the closing force.
Inventors: |
Eakins; Mark Edward;
(Kirkland, WA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
The Boeing Company |
Chicago |
IL |
US |
|
|
Family ID: |
54105706 |
Appl. No.: |
14/484028 |
Filed: |
September 11, 2014 |
Current U.S.
Class: |
701/49 ;
244/118.5 |
Current CPC
Class: |
G05D 15/01 20130101;
Y02T 50/46 20130101; Y02T 50/40 20130101; G05D 3/00 20130101; B64D
11/003 20130101 |
International
Class: |
B64D 11/00 20060101
B64D011/00; G05D 15/01 20060101 G05D015/01; G05D 3/00 20060101
G05D003/00 |
Claims
1. An apparatus comprising: a stowage bin; a number of sensors that
measure a number of forces on the stowage bin, wherein the number
of sensors comprises a first sensor to take a measurement of an
amount of opening force applied to the stowage bin, wherein the
amount of opening force applied to the stowage bin comprises an
amount of force applied to a handle of the stowage bin by a human
operator; an assist mechanism that provides a closing force,
wherein the assist mechanism has a mechanical advantage that
changes to provide the closing force; a controller that compares
data from the number of sensors; and an adjustment mechanism that
adjusts the closing force based on the data from the number of
sensors.
2. The apparatus of claim 1, wherein the closing force reduces a
force required to move the stowage bin from an open position to a
closed position, and wherein the closing force is part of a range
of possible assistive closing forces.
3. The apparatus of claim 1, wherein the controller identifies the
closing force based on the data from the number of sensors and
directs the adjustment mechanism to change a position of at least
one structure of the assist mechanism to provide the closing
force.
4. The apparatus of claim 3, wherein the controller directs the
adjustment mechanism to change a length of a lever arm of the
assist mechanism to provide the closing force.
5. (canceled)
6. The apparatus of claim 1, wherein the amount of opening force
applied to the stowage bin further comprises an amount of opening
torque applied by a number of items within the stowage bin.
7. The apparatus of claim 6, wherein the number of sensors further
comprises a second sensor to take the measurement of the amount of
force applied to the handle of the stowage bin by the human
operator.
8. (canceled)
9. The apparatus of claim 1, wherein the assist mechanism
comprises: a force generation device that generates a first force
to provide the closing force to move the stowage bin from an open
position to a closed position, the force generation device
comprising at least one of a tension spring, a compression spring,
a torsion spring, a strut, a gas strut, a weight, a motor, or a
magnet.
10. The apparatus of claim 9, wherein the number of sensors
supplies the data, wherein the assist mechanism has a lever arm
between a point of application of the closing force of the assist
mechanism and an axis of rotation, and wherein a length of the
lever arm is changed based on an amount of opening torque applied
to the stowage bin by a number of items as determined based on the
data from the number of sensors.
11. The apparatus of claim 10, wherein the adjustment mechanism
moves a point of application of the first force by the force
generation device to change the length of the lever arm based on
the amount of opening torque applied to the stowage bin by the
number of items.
12. The apparatus of claim 11, wherein the assist mechanism
comprises: a guide device that guides movement of the point of
application of the first force along a path, wherein the guide
device is selected from at least one of a track, a linkage, a rail,
or a groove.
13. The apparatus of claim 10, wherein the force generation device
has a fixed end and a movable end, wherein the movable end moves
along a path in an arc about the fixed end to change the length of
the lever arm.
14. The apparatus of claim 10, wherein the lever arm has a first
length when a first amount of opening torque is applied to the
stowage bin by the number of items and a second length that is
greater than the first length when a second amount of opening
torque is applied to the stowage bin by the number of items, and
wherein the second amount of opening torque is greater than the
first amount of opening torque.
15. The apparatus of claim 10 further comprising: a movement
inhibitor associated with a point of application of the first force
by the force generation device, wherein the movement inhibitor
engages to substantially prevent the length of the lever arm from
changing as the stowage bin moves from the open position to the
closed position.
16. The apparatus of claim 15, wherein the movement inhibitor
includes at least one of a rack and pinion, a clamp, a roller cam
clamp, a non-back drive actuator, a latch, or a magnetic lock.
17. The apparatus of claim 10 further comprising: a locking
mechanism connected to the stowage bin, wherein the locking
mechanism locks the stowage bin in the open position while the
length of the lever arm changes.
18. A method comprising: taking a number of measurements of a
number of forces applied to a stowage bin during operation of the
stowage bin, wherein the number of measurements is taken by a
number of sensors, wherein the number of sensors comprises a first
sensor to take a measurement of an amount of opening force applied
to the stowage bin, wherein the amount of opening force applied to
the stowage bin comprises an amount of force applied to a handle of
the stowage bin by a human operator; comparing data from the number
of sensors; adjusting a closing force provided by an assist
mechanism based on the data from the number of sensors; and
providing the closing force by the assist mechanism, wherein the
assist mechanism has a mechanical advantage that changes to provide
the closing force.
19. The method of claim 18 further comprising: identifying, by a
controller, a value for the closing force based on the number of
measurements; and directing an adjustment mechanism to change a
position of at least one structure of the assist mechanism to
provide the value for the closing force.
20. The method of claim 19, wherein providing the closing force
comprises: generating a first force by a force generation device of
the assist mechanism to provide the closing force, wherein the
force generation device comprises at least one of a tension spring,
a compression spring, torsion spring, a strut, a gas strut, a
weight, a motor, or a magnet.
21. The method of claim 20, wherein taking the number of
measurements of the number of forces applied to the stowage bin
during the operation of the stowage bin includes taking a
measurement of an amount of opening torque applied to the stowage
bin by a number of items within the stowage bin, and the method
further comprising: changing a length of a lever arm of the assist
mechanism based on the measurement of the amount of opening torque
applied to the stowage bin by the number of items, wherein the
lever arm is between a point of application of the closing force by
the assist mechanism and an axis of rotation.
22. The method of claim 21 further comprising: moving a point of
application of the first force of the force generation device by an
adjustment system to change the length of the lever arm based on
the amount of opening torque applied to the stowage bin by the
number of items.
23. The method of claim 22, wherein moving the point of application
of the first force of the force generation device comprises guiding
movement of the point of application of the first force along a
path by a guide device, wherein the guide device is selected from
at least one of a track, a linkage, a rail, or a groove.
24. The method of claim 19 further comprising: placing a number of
items into the stowage bin while the stowage bin is in an open
position such that the stowage bin contains the number of items;
taking a second number of measurements of a second number of forces
applied to the stowage bin during the operation of the stowage bin
following placing the number of items into the stowage bin, wherein
the second number of measurements is taken by the number of
sensors; comparing data from the number of sensors related to the
second number of measurements; adjusting the closing force provided
by the assist mechanism based on the data from the number of
sensors related to the second number of measurements to form an
increased closing force, wherein adjusting the closing force
includes changing the mechanical advantage of the assist mechanism;
and providing the increased closing force by the assist
mechanism.
25. An apparatus comprising: a stowage bin; a pivot directly
connected to the stowage bin and a structure such that the stowage
bin may rotate about the pivot from an open position to a closed
position; a number of sensors that measure a number of forces on
the stowage bin, wherein the number of sensors comprises a first
sensor to take a measurement of an amount of opening force applied
to the stowage bin, wherein the amount of opening force applied to
the stowage bin comprises an amount of force applied to a handle of
the stowage bin by a human operator; and an assist mechanism that
provides a closing force, wherein the assist mechanism has a
mechanical advantage that changes to provide the closing force.
Description
BACKGROUND INFORMATION
[0001] 1. Field
[0002] The present disclosure relates generally to storage of
items, and in particular, to overhead storage of items. Still more
particularly, the present disclosure relates to an apparatus for
storing items in an overhead stowage bin in an aircraft.
[0003] 2. Background
[0004] In commercial aviation, passengers may bring carry-on
luggage into the passenger cabin of the aircraft. This luggage may
be stored within the passenger cabin in designated storage areas.
Designated storage areas in the passenger cabin include areas on
the floor underneath the passenger seats and overhead stowage
bins.
[0005] A passenger places luggage in the overhead stowage bin when
the overhead stowage bin is in an open position. After luggage is
placed into an overhead stowage bin, the bin is closed.
[0006] Many designs for overhead stowage bins exist. Some overhead
stowage bin designs include a stationary luggage bin and a rotating
door. Other overhead stowage bin designs include a rotating luggage
bin. Still other overhead stowage bin designs feature a luggage bin
which is lowered into the passenger cabin.
[0007] As commercial airlines continue to charge baggage fees, an
increasing number of passengers are bringing carry-on items into
the passenger cabin. As a result, larger stowage bins are needed to
accommodate the increase in carry-on luggage. Larger bins result in
more luggage being placed into each bin, which increases the weight
of items in the bin.
[0008] Commercial airlines also desire to improve passenger
experience by providing more head room above seats in an aircraft.
As a result, lowering the stowage bins may be undesirable. Some
aircraft are even being designed with overhead stowage bins
positioned higher in the passenger cabin than before.
[0009] When more luggage is placed into overhead stowage bins,
these bins become more difficult to close than desired. Bins
oriented higher above the passenger seats compound the problem,
resulting in at least one of more force needed to close the stowage
bin or greater distance to lift the items in the stowage bin.
Therefore, it would be desirable to have a method and apparatus
that take into account at least some of the issues discussed above,
as well as other possible issues.
SUMMARY
[0010] An illustrative embodiment of the present disclosure
provides an apparatus. The apparatus comprises a stowage bin, a
number of sensors that measure a number of forces on the stowage
bin, an assist mechanism that provides a closing force, a
controller that compares data from the number of sensors, and an
adjustment mechanism that adjusts the closing force based on the
data from the number of sensors. The assist mechanism has a
mechanical advantage that changes to provide the closing force.
[0011] A further illustrative embodiment of the present disclosure
provides a method. The method comprises taking a number of
measurements of a number of forces applied to a stowage bin during
operation of the stowage bin. The number of measurements is taken
by a number of sensors. The method also compares data from the
number of sensors. The method further adjusts a closing force
provided by an assist mechanism based on the data from the number
of sensors. The method then provides the closing force by the
assist mechanism. The assist mechanism has a mechanical advantage
that changes to provide the closing force.
[0012] Another illustrative embodiment of the present disclosure
provides an apparatus. The apparatus comprises a stowage bin, a
pivot directly connected to the stowage bin and a structure such
that the stowage bin may rotate about the pivot from an open
position to a closed position, and an assist mechanism that
provides a closing force. The assist mechanism has a mechanical
advantage that changes to provide the closing force.
[0013] The features and functions can be achieved independently in
various embodiments of the present disclosure or may be combined in
yet other embodiments in which further details can be seen with
reference to the following description and drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The novel features believed characteristic of the
illustrative embodiments are set forth in the appended claims. The
illustrative embodiments, however, as well as a preferred mode of
use, further objectives and features thereof, will best be
understood by reference to the following detailed description of an
illustrative embodiment of the present disclosure when read in
conjunction with the accompanying drawings, wherein:
[0015] FIG. 1 is an illustration of an aircraft in which an
illustrative embodiment may be implemented;
[0016] FIG. 2 is an illustration of a block diagram of a stowage
environment in accordance with an illustrative embodiment;
[0017] FIG. 3 is an illustration of a force diagram of a stowage
bin in accordance with an illustrative embodiment;
[0018] FIG. 4 is an illustration of one example of a closed stowage
bin with minimal assistive closing force in accordance with an
illustrative embodiment;
[0019] FIG. 5 is an illustration of one example of an open stowage
bin with minimal assistive closing force in accordance with an
illustrative embodiment;
[0020] FIG. 6 is an illustration of one example of a closed stowage
bin with maximum assistive closing force in accordance with an
illustrative embodiment;
[0021] FIG. 7 is an illustration of one example of an open stowage
bin with maximum assistive closing force in accordance with an
illustrative embodiment;
[0022] FIG. 8 is an illustration of another example of an open
stowage bin with maximum assistive closing force in accordance with
an illustrative embodiment;
[0023] FIG. 9 is an illustration of a further example of an open
stowage bin with minimum assistive closing force in accordance with
an illustrative embodiment;
[0024] FIG. 10 is an illustration of a further example of an open
stowage bin with an assistive closing force in accordance with an
illustrative embodiment;
[0025] FIG. 11 is an illustration of a further example of an open
stowage bin with an assistive closing force in accordance with an
illustrative embodiment;
[0026] FIG. 12 is an illustration of a simplified view of yet a
further example of a closed stowage bin with a minimum assistive
closing force in accordance with an illustrative embodiment;
[0027] FIG. 13 is an illustration of a simplified view of yet a
further example of an open stowage bin with a minimum assistive
closing force in accordance with an illustrative embodiment;
[0028] FIG. 14 an illustration of a simplified view of a yet
further example of a closed stowage bin with a minimum assistive
closing force in accordance with an illustrative embodiment;
[0029] FIG. 15 is an illustration of a simplified view of a yet
further example of an open stowage bin with a minimum assistive
closing force in accordance with an illustrative embodiment;
[0030] FIG. 16 is an illustration of a flowchart of a process for
providing a closing force in accordance with an illustrative
embodiment;
[0031] FIG. 17 is an illustration of a block diagram of an aircraft
manufacturing and service method in accordance with an illustrative
embodiment; and
[0032] FIG. 18 is an illustration of a block diagram of an aircraft
in which an illustrative embodiment may be implemented.
DETAILED DESCRIPTION
[0033] The illustrative embodiments recognize and take into account
a number of different considerations. For example, the illustrative
embodiments recognize and take into account that overhead stowage
bins are designed with passenger safety, passenger comfort,
capacity, and weight in mind. The illustrative embodiments
recognize and take into account that the design of a stowage bin
may improve the comfort and ease of using the bin. For example,
assist mechanisms may be connected to a stowage bin to provide a
desirable amount of assistance in closing the bin.
[0034] The illustrative embodiments recognize and take into
account, however, that some currently used assist mechanisms may
not change the amount of closing force assistance in a desirable
manner. For instance, some existing systems do not change the
amount of assistance based on the weight of luggage in the bin.
Changing the amount of assistance provided is desirable such that
the bin may be closed easily, regardless of the weight of its
contents.
[0035] The illustrative embodiments further recognize and take into
account that it is desirable to provide closing assistance without
adding more weight and complexity to the aircraft than desired. For
example, the illustrative embodiments recognize and take into
account that implementing components that require power to close
the bin may add more weight than desired, increase the cost of the
aircraft more than desired, degrade the performance of the
aircraft, or a combination thereof.
[0036] Thus, the illustrative embodiments provide a method and
apparatus for closing a stowage bin. An apparatus comprises an
assist system connected to the stowage bin that assists in closing
the stowage bin. The assist mechanism has a mechanical advantage
that changes to provide a closing force. The closing force may be
adjusted based on data from a number of sensors that measure a
number of forces on the stowage bin. In some illustrative examples,
the closing force may reduce a force required to move the stowage
bin between an open position and a closed position.
[0037] With reference now to the figures, and in particular, with
reference to FIG. 1, an illustration of an aircraft is depicted in
accordance with an illustrative embodiment. In this illustrative
example, aircraft 100 has wing 102 and wing 104 attached to body
106. Body 106 may also be referred to as a fuselage. Aircraft 100
includes engine 108 attached to wing 102 and engine 110 attached to
wing 104.
[0038] Body 106 has tail section 112. Horizontal stabilizer 114,
horizontal stabilizer 116, and vertical stabilizer 118 are attached
to tail section 112 of body 106.
[0039] Body 106 also has cockpit 120 and passenger cabin 122. In
this example, passenger cabin 122 may include passenger seating in
seating area 124. Passenger seating may include a number of
aircraft seats. As used herein, a "number of" items means one or
more items. For example, a number of aircraft seats means one or
more aircraft seats.
[0040] Further, seating area 124 in passenger cabin 122 may also
include storage areas, such as a number of overhead stowage bins.
Passenger cabin 122 also may include lavatory 126 and galley area
128. These two areas may be partitioned or separated from seating
area 124 by a partitioning structure such as, for example, without
limitation, a wall, a partition, a class divider, a lavatory, a
galley, a curtain, a stair enclosure, or a bar unit.
[0041] This illustration of aircraft 100 is provided for purposes
of illustrating one environment in which the different illustrative
embodiments may be implemented. The illustration of aircraft 100 in
FIG. 1 is not meant to imply architectural limitations as to the
manner in which different illustrative embodiments may be
implemented. For example, aircraft 100 is shown as a commercial
passenger aircraft. The different illustrative embodiments may be
applied to other types of aircraft, such as private passenger
aircraft, a rotorcraft, and other suitable type of aircraft.
[0042] Also, other areas may be present in addition to seating area
124, lavatory 126, and galley area 128. Other areas may include,
for example, without limitation, closets, storage areas, lounges,
and other suitable areas for passenger seating. As another example,
airplane seats within seating area 124 may be arranged differently
from the depicted example. In other illustrative embodiments, some
seats may be grouped into sets of single seats instead of three
seats or pairs of seats as is illustrated in seating area 124.
[0043] Turning next to FIG. 2, an illustration of a block diagram
of a stowage environment is depicted in accordance with an
illustrative embodiment. Stowage environment 200 is an environment
in which overhead stowage system 202 is used in platform 204.
Aircraft 100 shown in FIG. 1 is an example of a physical
implementation for platform 204 shown in block form in this
figure.
[0044] As depicted, overhead stowage system 202 includes a number
of different components. In this illustrative example, overhead
stowage system 202 includes stowage bin 206, assist mechanism 208,
number of sensors 210, controller 212, movement inhibitor 214, and
locking mechanism 216.
[0045] In this depicted example, stowage bin 206 is a structure
that holds items in aircraft 100. In particular, stowage bin 206 is
an overhead stowage bin. For example, stowage bin 206 may be
oriented above passenger seats in seating area 124 in passenger
cabin 122 of aircraft 100 shown in FIG. 1.
[0046] Stowage bin 206 is connected to structure 218 in platform
204. Structure 218 may take the form of at least one of a
structural member, a housing, a frame, a wall, a ceiling, a skin
panel, or other suitable structures in platform 204.
[0047] As used herein, the phrase "at least one of," when used with
a list of items, means different combinations of one or more of the
listed items may be used and only one of the items in the list may
be needed. The item may be a particular object, thing, or category.
In other words, "at least one of" means any combination of items or
number of items may be used from the list, but not all of the items
in the list may be required.
[0048] For example, "at least one of item A, item B, and item C"
may mean item A; item A and item B; item B; item A, item B, and
item C; or item B and item C. In some cases, "at least one of item
A, item B, and item C" may mean, for example, without limitation,
two of item A, one of item B, and ten of item C; four of item B and
seven of item C; or some other suitable combination.
[0049] In an illustrative example, stowage bin 206 has latch 245,
handle 220 and cavity 222. Latch 245 may hold stowage bin 206
closed. After latch 245 is released, stowage bin 206 may be moved
by a passenger applying force to handle 220. Handle 220 is an
object through which a passenger will interact with the bin.
Specifically, handle 220 is a portion of stowage bin 206 that may
be used to move stowage bin 206. For example, a passenger may push
upward on handle 220 to close stowage bin 206. Alternatively, a
passenger may pull downward on handle 220 to open stowage bin 206.
In this illustrative example, cavity 222 is a space within stowage
bin 206 that receives and holds number of items 224.
[0050] As depicted, stowage bin 206 moves between open position 226
and closed position 228. When stowage bin 206 is in open position
226, stowage bin 206 may receive number of items 224. Specifically,
stowage bin 206 may receive number of items 224 in cavity 222.
[0051] In this illustrative example, number of items 224 is one or
more items. Items in number of items 224 may include at least one
of a bag, a briefcase, a carry-on item, clothing, passenger comfort
items, electronic devices, emergency equipment, food, beverages,
plants, or other suitable types of luggage and non-luggage
items.
[0052] Number of items 224 has weight 230 in this illustrative
example. Weight 230 of number of items 224 changes as items are
added or taken out of stowage bin 206. For example, as additional
items are placed into stowage bin 206, weight 230 increases. As
items are removed from stowage bin 206, weight 230 decreases.
[0053] Once number of items 224 is placed in or removed from cavity
222, stowage bin 206 may be moved to closed position 228. In some
illustrative examples, stowage bin 206 may then be latched or
locked in closed position 228 by latch 245. For instance, when
platform 204 takes the form of an aircraft, stowage bin 206 is
locked in closed position 228 during operation of the aircraft such
that number of items 224 remains in stowage bin 206.
[0054] As illustrated, stowage bin 206 moves between open position
226 and closed position 228 about number of pivot points 239. In
some designs of stowage bin 206, stowage bin 206 may move about a
single point, pivot 232. Pivot 232 may be directly connected to
stowage bin 206 and structure 218 such that stowage bin 206 may
rotate about pivot 232 from open position 226 to closed position
228. In more complex designs, number of pivot points 239 may be
part of a four bar system, sliders, tracks or combinations thereof
or other type of system in which stowage bin 206 moves about two or
more pivot points. In some illustrative examples, number of pivot
points 239 may be considered virtual pivot points.
[0055] Assist mechanism 208 generates a force used in closing
stowage bin 206 in this illustrative example. Assist mechanism 208
may generate a force that assists in closing stowage bin 206.
Specifically, assist mechanism 208 may supply closing force 234 to
stowage bin 206 to help human operator 236 close stowage bin 206.
In this manner, assist mechanism 208 reduces force 238 necessary
for human operator 236 to close stowage bin 206. Closing force 234
may increase as weight 230 of number of items 224 in stowage bin
206 increases. Closing force 234 reduces force 238 required to move
stowage bin 206 from open position 226 to closed position 228.
Closing force 234 may be part of a range of possible assistive
closing forces. Assistive closing forces are forces that help move
stowage bin 206 from open position 226 to closed position 228.
[0056] A value of closing force 234 may be changed by changing
aspects of assist mechanism 208 such as distance 240, lever arm
241, mechanical advantage 242, or a position of at least one
structure of assist mechanism 208. Lever arm 241 may be a distance
between fulcrum 277 and one or more components of assist mechanism
208. Fulcrum 277 is a point on which closing force 234 pivots.
Fulcrum 277 may also be called an axis of rotation. A lever arm is
a distance between a point of application of a force and a point
about which the force rotates.
[0057] Distance 240 represents the distance between pivot 232 and
one or more components of assist mechanism 208. In some
illustrative examples, distance 240 may represent a length of lever
arm 241 of assist mechanism 208. In these illustrative examples,
assist mechanism 208 may be directly connected to stowage bin
206.
[0058] As depicted, closing force 234 is related to lever arm 241.
Specifically, the value of closing force 234 is related to lever
arm 241. Lever arm 241 may be changed based on weight 230 of number
of items 224 in stowage bin 206. When lever arm 241 is changed,
closing force 234 may also change. For example, lever arm 241 has a
first length when a first amount of opening torque 243 that is
applied to stowage bin 206 by number of items 224 and a second
length that is greater than the first length when a second amount
of opening torque 243 is applied to stowage bin 206 by number of
items 224, and the second amount is greater than the first
amount.
[0059] In this depicted example, assist mechanism 208 has
mechanical advantage 242. Mechanical advantage 242 is a measure of
force amplification achieved by using assist mechanism 208.
Mechanical advantage 242 changes based on a change of lever arm
241.
[0060] As depicted, assist mechanism 208 includes force generation
device 246 and adjustment mechanism 248. Force generation device
246 includes a number of components attached to stowage bin 206.
Force generation device 246 provides force assist in closing
stowage bin 206. Specifically, force generation device 246
generates first force 249 to provide closing force 234 to move
stowage bin 206 from open position 226 to closed position 228. In
this depicted example, force generation device 246 may comprise at
least one of tension spring 203, compression spring 205, torsion
spring 247, strut 207, gas strut 209, weight 211, motor 213, magnet
215, or other desirable force generation devices. These components
may be connected to stowage bin 206 or arranged about stowage bin
206 such that assist mechanism 208 provides closing force 234. In
some illustrative examples, assist mechanism 208 has mechanical
advantage 242 that changes to provide closing force 234.
[0061] As depicted, force generation device 246 has fixed end 250
and movable end 252. In this depicted example, fixed end 250 does
not move relative to the structure that it is attached to. In an
illustrative example, fixed end 250 of force generation device 246
is attached to structure 218 in platform 204. In another
illustrative example, fixed end 250 of force generation device 246
is attached to stowage bin 206. In either case, although fixed end
250 may pivot or rotate about this attachment point, it does not
move a distance from the attachment point.
[0062] In this illustrative example, movable end 252 of force
generation device 246 moves back and forth along path 254. In some
illustrative examples, movable end 252 moves along path 254 in an
arc about fixed end 250 to change the length of lever arm 241.
Adjustment mechanism 248 comprises a number of components attached
to movable end 252 of force generation device 246. Adjustment
mechanism 248 moves movable end 252 to change lever arm 241 to
provide closing force 234. In other words, adjustment mechanism 248
moves movable end 252 to change a distance between movable end 252
and fulcrum 277 to provide closing force 234. Adjustment mechanism
248 may adjust closing force 234 based on data from number of
sensors 210.
[0063] In this depicted example, a distance between fulcrum 277 and
movable end 252 of force generation device 246 may increase as
weight 230 of number of items 224 in stowage bin 206 increases. In
a similar fashion, a distance between fulcrum 277 and movable end
252 of force generation device 246 may decrease as weight 230 of
number of items 224 in stowage bin 206 decreases.
[0064] In an illustrative example, adjustment mechanism 248
includes various components. For example, adjustment mechanism 248
may include mechanical, electromechanical, or other types of
components. In this illustrative example, adjustment mechanism 248
may take the form of an actuator.
[0065] As depicted, adjustment mechanism 248 moves movable end 252
of force generation device 246 along path 254. In this illustrative
example, path 254 may be a predefined track for movable end 252 of
force generation device 246.
[0066] Path 254 is an arc about fixed end 250 in this illustrative
example. In this manner, movable end 252 of force generation device
246 moves in a curved path about an axis shared with fixed end
250.
[0067] In some illustrative examples, guide device 256 is a
structure that guides movable end 252 of force generation device
246 along path 254. Guide device 256 guides movement of point of
application 257 of first force 249 along path 254. Guide device 256
may be selected from one of track 217, linkage 219, rail 221,
groove 223, or other desirable components.
[0068] As illustrated, number of sensors 210 is connected to
structure 218, stowage bin 206, or both. In this illustrative
example, number of sensors 210 may include one or more pressure
sensors, load cells, distance sensors, cameras, or other types of
sensors. Number of sensors 210 measures a number of forces on
stowage bin 206. Number of sensors 210 identifies at least one of
weight 230 of number of items 224 in stowage bin 206, an amount of
force 238 applied to structure 218 by number of items 224 in
stowage bin 206, or an amount of force 238 applied to handle 220 of
stowage bin 206 by human operator 236.
[0069] Number of sensors 210 supplies data 255. In some examples,
assist mechanism 208 has lever arm 241 between point of application
257 of first force 249 by force generation device 246 and an axis
of rotation, and the length of lever arm 241 is changed based on an
amount of opening torque 243 applied to stowage bin 206 by number
of items 224 as determined based on data 255 from number of sensors
210.
[0070] Number of sensors 210 includes first sensor 259 and second
sensor 261. First sensor 259 may take a measurement of amount of
opening force 263 applied to stowage bin 206. In one illustrative
example, amount of opening force 263 applied to stowage bin 206 is
an amount of opening torque 243 applied by number of items 224
within stowage bin 206 and an amount of force 238 applied to handle
220 of stowage bin 206 by human operator 236. In another
illustrative example, the amount of opening force 263 applied to
stowage bin 206 is an amount of opening torque 243 applied by
number of items 224 within stowage bin 206. Second sensor 261 may
take a measurement of the amount of force 238 applied to handle 220
of stowage bin 206 by human operator 236.
[0071] In this illustrative example, number of sensors 210
communicates with controller 212. Controller 212 also communicates
with adjustment mechanism 248. Controller 212 may communicate with
at least one of number of sensors 210 or adjustment mechanism 248
using any number of wireless communications links, wired
communications links, optical communications links, or other types
of communications links. Controller 212 compares data from number
of sensors 210. Controller 212 is a device that identifies a
desired value for closing force 234 to be provided by assist
mechanism 208 based on data from number of sensors 210. Controller
212 may also direct adjustment mechanism 248 to change a position
of at least one structure of assist mechanism 208 to provide
closing force 234. Specifically, controller 212 may direct
adjustment mechanism 248 to change a length of lever arm 241 of
assist mechanism 208 to provide closing force 234. For example,
controller 212 may generate commands to control the operation of
adjustment mechanism 248. Adjustment mechanism 248 may move point
of application 257 of first force 249 by force generation device
246 to change the length of lever arm 241 based on amount of
opening torque 243 applied to stowage bin 206 by number of items
224.
[0072] In this depicted example, controller 212 identifies desired
position 260 for force generation device 246 based on a desired
value for closing force 234, and activates adjustment mechanism 248
to move force generation device 246 to desired position 260. For
example, adjustment mechanism 248 may move movable end 252 of force
generation device 246 to desired position 260.
[0073] Desired position 260 may be a position along path 254.
Distance 240 is the distance from pivot 232 of stowage bin 206 and
desired position 260 of force generation device 246.
[0074] In this illustrative example, controller 212 may be
implemented in software, hardware, firmware, or a combination
thereof. When software is used, the operations performed by
controller 212 may be implemented using, for example, without
limitation, program code configured to run on a processor unit.
When firmware is used, the operations performed by controller 212
may be implemented using, for example, without limitation, program
code and data and stored in persistent memory to run on a processor
unit.
[0075] When hardware is employed, the hardware may include one or
more circuits that operate to perform the operations in performed
by controller 212. Depending on the implementation, the hardware
may take the form of a circuit system, an integrated circuit, an
application specific integrated circuit (ASIC), a programmable
logic device, or some other suitable type of hardware device
configured to perform any number of operations.
[0076] A programmable logic device may be configured to perform
certain operations. The device may be permanently configured to
perform these operations or may be reconfigurable. A programmable
logic device may take the form of, for example, without limitation,
a programmable logic array, a programmable array logic, a field
programmable logic array, a field programmable gate array, or some
other type of programmable hardware device.
[0077] In some illustrative examples, the operations, processes, or
both performed by controller 212 may be performed using organic
components integrated with inorganic components. In some cases, the
operations, processes, or both may be performed by entirely organic
components, excluding a human being. As one illustrative example,
circuits in organic semiconductors may be used to perform these
operations, processes, or both.
[0078] As illustrated, movement inhibitor 214 includes a number of
components physically associated with movable end 252 of force
generation device 246. Movement inhibitor 214 locks movable end 252
in place when stowage bin 206 is in open position 226. For example,
after movable end 252 is moved a desired distance from pivot 232,
movement inhibitor 214 prevents movable end 252 from moving out of
position. As an example, movement inhibitor 214 reduces slippage or
other undesired movement to ensure that a desired value for closing
force 234 is maintained. Movement inhibitor 214 is associated with
point of application 257 of first force 249 by force generation
device 246, wherein movement inhibitor 214 engages to substantially
prevent the length of lever arm 241 from changing as stowage bin
206 moves from open position 226 to closed position 228.
[0079] As used herein, a first component, such as movement
inhibitor 214, may be considered to be associated with a second
component, such as movable end 252 of force generation device 246,
by being secured to the second component, bonded to the second
component, mounted to the second component, welded to the second
component, fastened to the second component, connected to the
second component in some other suitable manner, or a combination
thereof. The first component also may be connected to the second
component using a third component. Further, the first component may
be considered to be associated with the second component by being
formed as part of, as an extension of the second component, or a
combination thereof.
[0080] In this depicted example, locking mechanism 216 is connected
to stowage bin 206. Locking mechanism 216 locks stowage bin 206 in
open position 226 while movable end 252 of force generation device
246 moves relative to pivot 232 of stowage bin 206. Locking
mechanism 216 locks stowage bin 206 in open position 226 while
length of lever arm 241 changes. In this manner, human operator 236
cannot close stowage bin 206 until distance 240 is set to provide a
desired value of closing force 234 in closing stowage bin 206.
[0081] Movement inhibitor 214 and locking mechanism 216 each may
comprise the same or different types of components in this
illustrative example. For instance, movement inhibitor 214, locking
mechanism 216, or both may comprise at least one of rack and pinion
225, clamp 227, roller cam clamp 229, non-back drive actuator 231,
latch 235, magnetic lock 237, or other suitable components.
[0082] The illustration of overhead stowage system 202 in FIG. 2 is
not meant to imply physical or architectural limitations to the
manner in which an illustrative embodiment may be implemented.
Other components in addition to or in place of the ones illustrated
may be used. Some components may be optional. Also, the blocks are
presented to illustrate some functional components. One or more of
these blocks may be combined, divided, or combined and divided into
different blocks when implemented in an illustrative
embodiment.
[0083] Although the illustrative examples are for an illustrative
embodiment and are described with respect to an aircraft, an
illustrative embodiment may be applied to other types of platforms.
Platform 204 may be, for example, without limitation, a mobile
platform, a stationary platform, a land-based structure, an
aquatic-based structure, and a space-based structure. More
specifically, platform 204 may be a surface ship, a tank, a
personnel carrier, a train, a spacecraft, a submarine, an
automobile, a house, a manufacturing facility, a building, and
other suitable platforms.
[0084] Further, in some illustrative examples, controller 212,
number of sensors 210, or both may be absent. Instead, a desired
value for closing force 234 may be manually set, determined by
mechanical devices, or some combination thereof.
[0085] Turning now to FIG. 3, an illustration of a force diagram of
a stowage bin is depicted in accordance with an illustrative
embodiment. In stowage environment 300, stowage bin 302 is movably
connected to structure 304. The movable connection between stowage
bin 302 and structure 304 has a number of pivot points. As
depicted, stowage bin 302 has pivot point 306. In other
illustrative embodiments, stowage bin 302 may have more than one
pivot point or other types of articulation.
[0086] As depicted, human operator 308 applies force 310 to move
stowage bin 302 from open position 311 to a closed position. Other
forces on stowage bin 302 include weight 312 of a number of items
within stowage bin 302, closing force 314, and weight 315 of
stowage bin 302 itself. Weight 315 remains constant. However,
weight 312 of the number of items increases or decreases as items
are added or removed from stowage bin 302. Closing force 314 is
provided by an assist mechanism (not pictured). Closing force 314
is adjustable across a range of values. Closing force 314 is
increased or decreased by changing a mechanical advantage of the
assist mechanism. By increasing closing force 314, force 310 is
decreased. In other words, closing force 314 is an assistive
closing force. Closing force 314 is part of a range of possible
assistive closing forces. Closing force 314 reduces force 310
required to move stowage bin 302 from open position 311 to a closed
position.
[0087] As depicted, number of items within stowage bin 302 would
have center of gravity 316. Stowage bin 302 has center of gravity
318. Each force has a respective lever arm. A number of items
within stowage bin 302 has lever arm 320. Stowage bin 302 has lever
arm 322. Force 310 has lever arm 324. Closing force 314 has lever
arm 326. By changing lever arm 326, the value of closing force 314
changes. For example, when weight 312 increases, lever arm 326 may
be changed to increase the value of closing force 314. As another
example, when items are removed from stowage bin 302 to decrease
weight 312, lever arm 326 may be changed to decrease the value of
closing force 314.
[0088] As depicted, fulcrum 328 is the same as pivot point 306 of
stowage bin 302. However, in other illustrative examples, fulcrum
328 may be positioned in locations other than pivot point 306 of
stowage bin 302.
[0089] Turning now to FIG. 4, an illustration of one example of a
closed stowage bin with minimal assistive closing force is depicted
in accordance with an illustrative embodiment. As depicted, stowage
environment 400 includes stowage bin 402, and assist mechanism 406.
Stowage bin 402 may be a physical implementation of stowage bin 206
in stowage environment 200 of FIG. 2. Stowage bin 402 is in closed
position 407. Stowage bin 402 is directly movably connected to a
structure by pivot 408.
[0090] Assist mechanism 406 includes force generation device 410,
adjustment mechanism 412, and guide device 414. As depicted, force
generation device 410 takes the form of strut 416. Force generation
device 410 has fixed end 418 and movable end 420. Fixed end 418
remains connected to stowage bin 402 in the same location. Movable
end 420 translates along guide device 414 to change a closing force
supplied by assist mechanism 406. Movable end 420 may be moved to
and maintained at various positions along guide device 414. The
closing force has a value within a range of assistive closing force
values. As depicted, force generation device 410 is positioned to
provide a minimum value for an assistive closing force.
[0091] Adjustment mechanism 412 moves movable end 420 along guide
device 414 to change the closing force supplied by assist mechanism
406. Adjustment mechanism 412 may adjust the closing force based on
data from a number of sensors. As depicted, adjustment mechanism
412 takes the form of an actuator movably connected to the
structure at pivot point 421.
[0092] In this illustrative example, guide device 414 is an arc.
Guide device 414 has first end 422 and second end 424. When movable
end 420 is at first end 422, the closing force has a minimum value.
When movable end 420 is at second end 424, the closing force has a
maximum value.
[0093] Number of sensors 426 is associated with stowage bin 402.
Number of sensors 426 may measure a number of forces on stowage bin
402. Number of sensors 426 may supply data. As depicted, number of
sensors 426 includes first sensor 428 and second sensor 430. First
sensor 428 may take a measurement of an amount of opening force
applied to stowage bin 402. The amount of opening force applied to
stowage bin 402 is an amount of opening torque applied by a number
of items within stowage bin 402 and an amount of force applied to
the handle of stowage bin 402 by a human operator. Second sensor
430 takes a measurement of the amount of force applied to the
handle of stowage bin 402 by the human operator. Data from first
sensor 428 and second sensor 430 may be used to determine the
amount of opening torque applied by the number of items. The
determined amount of opening torque applied by the number of items
may be used to determine a desired closing force to be supplied by
assist mechanism 406.
[0094] Turning now to FIG. 5, an illustration of one example of an
open stowage bin with minimal assistive closing force is depicted
in accordance with an illustrative embodiment. View 500 is a view
of stowage bin 402 in open position 502. Specifically, stowage bin
402 has rotated clock-wise about pivot 408 from closed position 407
of FIG. 4.
[0095] Turning now to FIG. 6, an illustration of one example of a
closed stowage bin with maximum assistive closing force is depicted
in accordance with an illustrative embodiment. View 600 is a view
of stowage bin 402 in closed position 407. As depicted, adjustment
mechanism 412 has moved movable end 420 of force generation device
410 to second end 424 of guide device 414.
[0096] Turning now to FIG. 7, an illustration of one example of an
open stowage bin with maximum assistive closing force in accordance
with an illustrative embodiment. View 700 is a view of stowage bin
402 in open position 502 with maximum assistive closing force.
Specifically, stowage bin 402 has rotated clock-wise about pivot
408 from closed position 407 of FIG. 6.
[0097] Turning now to FIG. 8, an illustration of another example of
an open stowage bin with maximum assistive closing force is
depicted in accordance with an illustrative embodiment. As
depicted, stowage environment 800 includes stowage bin 802 and
assist mechanism 806. Stowage bin 802 may be a physical
implementation of stowage bin 206 in stowage environment 200 of
FIG. 2. Stowage bin 802 is in open position 807. Stowage bin 802 is
directly movably connected to the structure by pivot 808.
[0098] Assist mechanism 806 includes force generation device 810,
adjustment mechanism 812, and guide device 814. As depicted, force
generation device 810 takes the form of compression strut 816.
Force generation device 810 has fixed end 818 and movable end 820.
Fixed end 818 remains connected to linkage 822. Linkage 822 is
connected to stowage bin 802 and the structure (not depicted).
Movable end 820 translates along guide device 814 to change a
closing force supplied by assist mechanism 806. Movable end 820 may
be moved to and maintained at various positions along guide device
814. The closing force has a value within a range of assistive
closing force values. As depicted, force generation device 810 is
positioned to provide a maximum value for an assistive closing
force.
[0099] Adjustment mechanism 812 moves movable end 820 along guide
device 814 to change the closing force supplied by assist mechanism
806. Adjustment mechanism 812 may adjust the closing force based on
data from a number of sensors. As depicted, adjustment mechanism
812 takes the form of an actuator movably connected to structure
804 at pivot point 824.
[0100] In this illustrative example, guide device 814 is an arc.
Guide device 814 has first end 826 and second end 828. When movable
end 820 is at first end 826, the closing force has a maximum value.
When movable end 820 is at second end 828, the closing force has a
minimum value.
[0101] Number of sensors 830 is associated with stowage bin 802.
Number of sensors 830 may measure a number of forces on stowage bin
802. Number of sensors 830 may supply data. As depicted, number of
sensors 830 includes first sensor 832. First sensor 832 may take a
measurement of an amount of an opening force applied to stowage bin
802. The amount of opening force applied to stowage bin 802 is an
amount of opening torque applied by a number of items within
stowage bin 802. As depicted, first sensor 832 is able to measure
the amount of opening torque applied by a number of items within
stowage bin 802 directly. As a result, number of sensors 830 does
not include a second sensor to take a measurement of the amount of
force applied to the handle of stowage bin 802 by the human
operator in this illustrative example. Data from first sensor 832
may be used to determine a desired closing force to be supplied by
assist mechanism 806. The determined amount of opening torque
applied by the number of items may be used to determine a desired
closing force to be supplied by assist mechanism 806.
[0102] Turning now to FIG. 9, an illustration of a further example
of an open stowage bin with minimum assistive closing force is
depicted in accordance with an illustrative embodiment. As
depicted, stowage environment 900 includes stowage bin 902,
structure 904, and assist mechanism 906. Stowage bin 902 may be a
physical implementation of stowage bin 206 in stowage environment
200 of FIG. 2. Stowage bin 902 is in open position 907. Stowage bin
902 is movably connected to structure 904 by pivot 908. As
depicted, pivot 908 is directly connected to structure 904. As
depicted, structure 904 is an airframe.
[0103] Assist mechanism 906 includes force generation device 910,
adjustment mechanism 912, and guide device 914. As depicted, force
generation device 910 takes the form of torsion spring 915 and
cable 916. Force generation device 910 has fixed end 918 and
movable end 920. Fixed end 918 remains connected to structure 904.
Movable end 920 translates along guide device 914 to change a
closing force supplied by assist mechanism 906. Movable end 920 may
be moved to and maintained at various positions along guide device
914. Movable end 920 may be maintained at a position by movement
inhibitor 921. The closing force has a value within a range of
assistive closing force values. As depicted, force generation
device 910 is positioned to provide a minimum value for an
assistive closing force.
[0104] Adjustment mechanism 912 moves movable end 920 along guide
device 914 to change the closing force supplied by assist mechanism
906. Adjustment mechanism 912 may adjust the closing force based on
data from a number of sensors. As depicted, adjustment mechanism
912 takes the form of an actuator movably connected to stowage bin
902.
[0105] In this illustrative example, guide device 914 is an arc.
Guide device 914 has first end 922 and second end 924. When movable
end 920 is at first end 922, the closing force has a minimum value.
When movable end 920 is at second end 924, the closing force has a
maximum value.
[0106] Number of sensors 926 is associated with stowage bin 902.
Number of sensors 926 may measure a number of forces on stowage bin
902. Number of sensors 926 may supply data. As depicted, number of
sensors 926 includes first sensor 928. First sensor 928 may take a
measurement of an amount of opening force applied to stowage bin
902. The amount of opening force applied to stowage bin 902 is an
amount of opening torque applied by a number of items within
stowage bin 902. As depicted, first sensor 928 is able to measure
the amount of opening torque applied by a number of items within
stowage bin 902 directly. As a result, number of sensors 926 does
not include a second sensor to take a measurement of the amount of
force applied to the handle of stowage bin 902 by the human
operator in this illustrative example. Data from first sensor 928
may be used to determine a desired closing force to be supplied by
assist mechanism 906. The determined amount of opening torque
applied by the number of items may be used to determine a desired
closing force to be supplied by assist mechanism 906. In other
illustrative examples, number of sensors 926 may include a second
sensor to provide additional data for determining a desired closing
force.
[0107] Turning now to FIG. 10, an illustration of a further example
of an open stowage bin with an assistive closing force is depicted
in accordance with an illustrative embodiment. View 1000 is a view
of stowage bin 902 in open position 907 with a second closing
force. Specifically, this second closing force is a greater closing
force than depicted in FIG. 9. This second closing force is
accomplished by moving movable end 920 from first end 922 to
location 1002 on guide device 914.
[0108] Turning now to FIG. 11, an illustration of a further example
of an open stowage bin with an assistive closing force is depicted
in accordance with an illustrative embodiment. View 1100 is a view
of stowage bin 902 in open position 907 with a third closing force.
Specifically, this third closing force is a greater closing force
than depicted in either FIG. 9 or FIG. 10. This third closing force
is accomplished by moving movable end 920 from location 1002 to
location 1102 on guide device 914.
[0109] Turning now to FIG. 12, an illustration of a simplified view
of a yet further example of a closed stowage bin with a minimum
assistive closing force is depicted in accordance with an
illustrative embodiment. As depicted, stowage environment 1200
includes stowage bin 1202 and assist mechanism 1204. Stowage bin
1202 may be a physical implementation of stowage bin 206 in stowage
environment 200 of FIG. 2. Stowage bin 1202 is in closed position
1206. Stowage bin 1202 is movably connected to a structure by
number of pivots 1208. As depicted, number of pivots 1208 takes the
form of a four-bar assembly.
[0110] Assist mechanism 1204 includes force generation device 1210
and guide device 1212. An adjustment mechanism is not depicted, but
would be used to move movable end 1214 of force generation device
1210. As depicted, force generation device 1210 takes the form of
strut 1216. Strut 1216 may be a gas strut. In other illustrative
examples, a tension spring enclosed within a housing may be used
instead of strut 1216. Force generation device 1210 has fixed end
1218 and movable end 1214. Fixed end 1218 remains connected to an
aircraft structure (not depicted). Movable end 1214 translates
along guide device 1212 to change a closing force supplied by
assist mechanism 1204. Movable end 1214 may be moved to and
maintained at various positions along guide device 1212. The
closing force has a value within a range of assistive closing force
values. As depicted, force generation device 1210 is positioned to
provide a minimum value for an assistive closing force.
[0111] In this illustrative example, guide device 1212 is an arc.
Guide device 1212 has first end 1220 and second end 1222. When
movable end 1214 is at first end 1220, the closing force has a
maximum value. When movable end 1214 is at second end 1222, the
closing force has a minimum value.
[0112] Although not depicted in this simplified illustration,
several other components may be present in this example. For
example, this embodiment may have at least one of an adjustment
mechanism, controller, or number of sensors.
[0113] Turning now to FIG. 13, an illustration of a simplified view
of a yet further example of an open stowage bin with a minimum
assistive closing force is depicted in accordance with an
illustrative embodiment. View 1300 is a view of stowage bin 1202 in
open position 1302. As depicted, adjustment mechanism (not shown)
has moved movable end 1214 of force generation device 1210 to
second end 1222 of guide device 1212.
[0114] Turning now to FIG. 14, an illustration of a simplified view
of a yet further example of a closed stowage bin with a minimum
assistive closing force is depicted in accordance with an
illustrative embodiment. As depicted, stowage environment 1400
includes stowage bin 1402 and assist mechanism 1404. Stowage bin
1402 may be a physical implementation of stowage bin 206 in stowage
environment 200 of FIG. 2. Stowage bin 1402 is in closed position
1406. Stowage bin 1402 is movably connected to a structure by
number of pivots 1408. As depicted, number of pivots 1408 takes the
form of four bar linkage 1409.
[0115] Assist mechanism 1404 includes force generation device 1410
and guide 1412. An adjustment mechanism is not depicted, but would
be used to move movable end 1414 of force generation device 1410.
As depicted, force generation device 1410 takes the form of
compression strut 1416. Force generation device 1410 has fixed end
1418 and movable end 1414. Fixed end 1418 remains connected to an
aircraft structure (not depicted). Movable end 1414 translates
along guide 1412 to change a closing force supplied by assist
mechanism 1404. Movable end 1414 may be moved to and maintained at
various positions along guide 1412. The closing force has a value
within a range of assistive closing force values. As depicted,
force generation device 1410 is positioned to provide a minimum
value for an assistive closing force.
[0116] In this illustrative example, guide 1412 is an arc. Guide
1412 has first end 1420 and second end 1422. When movable end 1414
is at first end 1420, the closing force has a maximum value. When
movable end 1414 is at second end 1422, the closing force has a
minimum value.
[0117] Although not depicted in this simplified illustration,
several other components may be present in this example. For
example, this embodiment may have at least one of an adjustment
mechanism, controller, or number of sensors.
[0118] Turning now to FIG. 15, an illustration of a simplified view
of a yet further example of an open stowage bin with a minimum
assistive closing force is depicted in accordance with an
illustrative embodiment. View 1500 is a view of stowage bin 1402 in
open position 1502. As depicted, adjustment mechanism (not shown)
has moved movable end 1414 of force generation device 1410 to
second end 1422 of guide 1412.
[0119] The illustrations of stowage bins, number of pivot points,
and assist mechanisms in FIGS. 3-15 are not meant to imply physical
or architectural limitations to the manner in which an illustrative
embodiment may be implemented. Other components in addition to or
in place of the ones illustrated may be used. Some components may
be optional.
[0120] The different components shown in FIGS. 1 and 3-15 may be
illustrative examples of how components shown in block form in FIG.
2 can be implemented as physical structures. Additionally, some of
the components in FIGS. 1 and 3-15 may be combined with components
in FIG. 2, used with components in FIG. 2, or a combination of the
two.
[0121] Turning now to FIG. 16, an illustration of a flowchart of a
process for providing a closing force is depicted in accordance
with an illustrative embodiment. Process 1600 may be used to
provide a closing force to reduce a force required to move a
stowage bin from an open position to a closed position. Process
1600 may be used with stowage bin 206 of FIG. 2 to provide closing
force 234. Process 1600 may also be used with any stowage bins of
FIGS. 3-15 to provide a closing force.
[0122] Process 1600 begins by taking a number of measurements of a
number of forces applied to a stowage bin during operation of the
stowage bin, wherein the number of measurements is taken by a
number of sensors (operation 1602). In some illustrative examples,
the number of sensors includes a first sensor. This first sensor
may measure an amount of opening force. The amount of opening force
may be an amount of opening torque applied by a number of items
within the stowage bin. Accordingly, taking the number of
measurements of the number of forces applied to the stowage bin
during operation of the stowage bin includes taking a measurement
of the amount of opening torque applied to the stowage bin by a
number of items within the stowage bin. This type of measurement
may be referred to as a direct measurement.
[0123] In other illustrative examples, the number of sensors may
include a first sensor and a second sensor. The first sensor may
measure an amount of opening force applied to the stowage bin. The
amount of opening force is an amount of opening torque applied by a
number of items within the stowage bin and an amount of force
applied to a handle of the stowage bin by a human operator. In
these illustrative examples, the second sensor may take a
measurement of the amount of force applied to the handle of the
stowage bin by the human operator.
[0124] Process 1600 continues by comparing data from the number of
sensors (operation 1604). Comparing data from the number of sensors
may include comparing the data from the number of sensors taken
during the same time. For example, data from the first sensor may
be compared to data from the second sensor. In some illustrative
examples, comparing data from the number of sensors may include
comparing data from different times. For example, current
measurements may be compared to past measurements to determine if a
weight of a number of items within the stowage bin has changed.
[0125] Process 1600 then adjusts a closing force provided by an
assist mechanism based on the data from the number of sensors
(operation 1606). In some illustrative examples, the closing force
provided by the assist mechanism may be changed by changing a
length of a lever arm of the assist mechanism.
[0126] Process 1600 may then provide the closing force by the
assist mechanism, wherein the assist mechanism has a mechanical
advantage that changes to provide the closing force (operation
1608). Afterwards, the process terminates.
[0127] The flowcharts and block diagrams in the different depicted
embodiments illustrate the architecture, functionality, and
operation of some possible implementations of apparatuses and
methods in an illustrative embodiment. In this regard, each block
in the flowcharts or block diagrams may represent at least one of
module, a segment, a function, or a portion a combination thereof
of an operation or step.
[0128] In some alternative implementations of an illustrative
embodiment, the function or functions noted in the blocks may occur
out of the order noted in the figures. For example, in some cases,
two blocks shown in succession may be executed substantially
concurrently, or the blocks may sometimes be performed in the
reverse order, depending upon the functionality involved. Also,
other blocks may be added in addition to the illustrated blocks in
a flowchart or block diagram.
[0129] In some illustrative examples, the process may also
identify, by the controller, a value for the closing force based on
the number of measurements. The value for the closing force may be
identified based on at least one of the value of the opening
torque, a value of the force provided by a human operator on the
handle of the stowage bin, or a total force on the stowage bin. The
process may further direct the adjustment mechanism to change a
position of at least one structure of the assist mechanism to
provide the value for the closing force. For example, a controller
may direct the adjustment mechanism to move a movable end of a
force generation device to provide a value for the closing force.
In some illustrative examples, providing the closing force may
include generating a first force by a force generation device of
the assist mechanism to provide the closing force, wherein the
force generation device comprises at least one of a tension spring,
a compression spring, a torsion spring, a strut, a gas strut, a
weight, a motor, or a magnet.
[0130] In some illustrative examples, taking the number of
measurements of the number of forces applied to the stowage bin
during operation of the stowage bin includes taking a measurement
of the amount of opening torque applied to the stowage bin by a
number of items within the stowage bin. The method may also change
a length of a lever arm of the assist mechanism based on the
measurement of the amount of opening torque applied to the stowage
bin by the number of items, wherein the lever arm is between a
point of application of the closing force by the assist mechanism
and an axis of rotation. The axis of rotation may also be called a
fulcrum. In some illustrative examples, the process may move the
point of application of the first force of the force generation
device by the adjustment system to change the length of the lever
arm based on the amount of opening torque applied to the stowage
bin by the number of items. In some illustrative examples, moving
the point of application of the first force of the force generation
device comprises guiding movement of the point of application of
the first force along a path by a guide device, wherein the guide
device is selected from at least one of a track, a linkage, a rail,
or a groove.
[0131] In some illustrative examples, the process places a number
of items into the stowage bin while the stowage bin is in the open
position such that the stowage bin contains the number of items.
The process may take a second number of measurements of a second
number of forces applied to the stowage bin during operation of the
stowage bin following placing the number of items into the stowage
bin, wherein the second number of measurements is taken by the
number of sensors. The process may compare data from the number of
sensors related to the second number of measurements.
[0132] In some illustrative examples, the process may then adjust
the closing force provided by the assist mechanism based on the
data from the number of sensors related to the second number of
measurements to form an increased closing force, wherein adjusting
the closing force includes changing the mechanical advantage of the
assist mechanism. Afterwards, the process may provide the increased
closing force by the assist mechanism. Thus, the closing force may
change as the number of items changes within the stowage bin.
[0133] The illustrative embodiments of the present disclosure may
be described in the context of aircraft manufacturing and service
method 1700 as shown in FIG. 17 and aircraft 1800 as shown in FIG.
18. Turning first to FIG. 17, an illustration of an aircraft
manufacturing and service method is depicted in accordance with an
illustrative embodiment. During pre-production, aircraft
manufacturing and service method 1700 may include specification and
design 1702 of aircraft 1800 in FIG. 18 and material procurement
1704.
[0134] During production, component and subassembly manufacturing
1706 and system integration 1708 of aircraft 1800 in FIG. 18 takes
place. Thereafter, aircraft 1800 in FIG. 18 may go through
certification and delivery 1710 in order to be placed in service
1712. While in service 1712 by a customer, aircraft 1800 in FIG. 18
is scheduled for routine maintenance and service 1714, which may
include modification, reconfiguration, refurbishment, and other
maintenance or service.
[0135] Each of the processes of aircraft manufacturing and service
method 1700 may be performed or carried out by a system integrator,
a third party, an operator, or a combination thereof. In these
examples, the operator may be a customer. For the purposes of this
description, a system integrator may include, without limitation,
any number of aircraft manufacturers and major-system
subcontractors; a third party may include, without limitation, any
number of vendors, subcontractors, and suppliers; and an operator
may be an airline, a leasing company, a military entity, a service
organization, and so on.
[0136] With reference now to FIG. 18, an illustration of an
aircraft is depicted in which an illustrative embodiment may be
implemented. In this example, aircraft 1800 is produced by aircraft
manufacturing and service method 1700 in FIG. 17 and may include
airframe 1802 with plurality of systems 1804 and interior 1806.
Examples of systems 1804 include one or more of propulsion system
1808, electrical system 1810, hydraulic system 1812, and
environmental system 1814. Any number of other systems may be
included. Although an aerospace example is shown, different
illustrative embodiments may be applied to other industries, such
as the automotive industry.
[0137] Apparatuses and methods embodied herein may be employed
during at least one of the stages of aircraft manufacturing and
service method 1700 in FIG. 17. In particular, stowage bin 206 and
assist mechanism 208 from FIG. 2 may be used during any one of the
stages of aircraft manufacturing and service method 1700. For
example, without limitation, assist mechanism 208 from FIG. 2 may
be used to provide closing force during at least one of component
and subassembly manufacturing 1706, system integration 1708,
routine maintenance and service 1714, or some other stage of
aircraft manufacturing and service method 1700.
[0138] In one illustrative example, components or subassemblies
produced in component and subassembly manufacturing 1706 in FIG. 17
may be fabricated or manufactured in a manner similar to components
or subassemblies produced while aircraft 1800 is in service 1712 in
FIG. 17. As yet another example, one or more apparatus embodiments,
method embodiments, or a combination thereof may be utilized during
production stages, such as component and subassembly manufacturing
1706 and system integration 1708 in FIG. 17. One or more apparatus
embodiments, method embodiments, or a combination thereof may be
utilized while aircraft 1800 is in service 1712, during maintenance
and service 1714 in FIG. 17, or a combination thereof. The use of a
number of the different illustrative embodiments may substantially
expedite the assembly, reduce the cost of aircraft 1800, or
both.
[0139] Thus, the illustrative embodiments provide a stowage bin
having an assistive mechanism providing a closing force to reduce a
force required to move the stowage bin from an open position to a
closed position. The closing force may be increased or decreased
along a range of values. The closing force may be increased or
decreased based on a weight of a number of items within the stowage
bin. The weight of the number of items may create an opening torque
on the stowage bin. The opening torque may be determined based on
data provided by a number of sensors. In some examples, the number
of sensors may directly measure the opening torque on the stowage
bin. In other examples, the number of sensors may instead
indirectly measure the opening torque on the stowage bin by
measuring a total force on the stowage bin.
[0140] By providing a closing force, an assist mechanism may allow
for stowage bins to have increased capacity without increasing the
amount of force a human operator must apply to open or close the
stowage bin. By providing a closing force, an assist mechanism may
allow for stowage bins to be placed higher within the cabin of an
aircraft. Having stowage bins placed higher within the cabin may
provide increased passenger comfort and mobility. By providing a
closing force, heavier items may be placed within a stowage bin
without substantially increasing the force a human operator must
apply to open or close the stowage bin.
[0141] The illustrative embodiments may provide an assistive
closing force without an undesirable amount of added weight.
Further, the illustrative embodiments may provide an assistive
closing force without power requirements of other `solutions` such
as motorized bins. The illustrative embodiments may automatically
adjust to variable load conditions caused by adding or removing a
number of items within the stowage bin. Further, the illustrative
embodiments may provide an assistive closing force without
undesirably limiting or undesirably impacting the functionality or
operation of the stowage bin.
[0142] The description of the different illustrative embodiments
has been presented for purposes of illustration and description,
and is not intended to be exhaustive or limited to the embodiments
in the form disclosed. Many modifications and variations will be
apparent to those of ordinary skill in the art. Further, different
illustrative embodiments may provide different features as compared
to other desirable embodiments. The embodiment or embodiments
selected are chosen and described in order to best explain the
principles of the embodiments, the practical application, and to
enable others of ordinary skill in the art to understand the
disclosure for various embodiments with various modifications as
are suited to the particular use contemplated.
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