U.S. patent application number 13/349548 was filed with the patent office on 2012-08-16 for child motion device with adjustable seat.
This patent application is currently assigned to Graco Children's Products Inc.. Invention is credited to Thomas J. Pollack, Chad Robbins.
Application Number | 20120205954 13/349548 |
Document ID | / |
Family ID | 46636331 |
Filed Date | 2012-08-16 |
United States Patent
Application |
20120205954 |
Kind Code |
A1 |
Pollack; Thomas J. ; et
al. |
August 16, 2012 |
Child Motion Device with Adjustable Seat
Abstract
A child motion device has a support having an upstanding post, a
seat mounted on the upstanding post, and a rotation assembly. The
rotation assembly has detents carried by either the seat or the
post and spaced around and radially outward from the post, and has
a spring biased protrusion carried on the other of the seat and the
post. The seat can be rotated to different orientations
corresponding to the detent positions. The protrusion seats in one
of the detents positioning the seat in a selected orientation
relative to the support and determined by the detent in which it is
seated.
Inventors: |
Pollack; Thomas J.;
(Atlanta, GA) ; Robbins; Chad; (Atlanta,
GA) |
Assignee: |
Graco Children's Products
Inc.
Atlanta
GA
|
Family ID: |
46636331 |
Appl. No.: |
13/349548 |
Filed: |
January 12, 2012 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61432099 |
Jan 12, 2011 |
|
|
|
Current U.S.
Class: |
297/344.21 ;
297/354.12 |
Current CPC
Class: |
A47D 1/002 20130101 |
Class at
Publication: |
297/344.21 ;
297/354.12 |
International
Class: |
A47D 1/00 20060101
A47D001/00 |
Claims
1. A child motion device comprising: a support having an upstanding
post; a seat mounted on the upstanding post; and a rotation
mechanism having a plurality of detents provided on one of the seat
and the post and spaced circumferentially around and radially
outward relative to the post; and a spring biased protrusion
carried on the other of the seat and the post, wherein the seat can
be rotated about the post to different orientations corresponding
to the plurality of detents and wherein the spring biased
protrusion is biased into and seats in a selected one of the
plurality of detents to position the seat in a desired one of the
different orientations relative to the support frame.
2. A child motion device according to claim 1, wherein the
upstanding post is part of a swing arm on a swing.
3. A child motion device according to claim 1, wherein the
upstanding post is a tube.
4. A child motion device according to claim 1, wherein the rotation
mechanism has a housing and a portion of the rotation mechanism is
carried on a downward facing surface of the housing.
5. A child motion device according to claim 1, wherein the rotation
mechanism includes a collar on an underside facing surface of the
rotation mechanism or the seat, the plurality of detents being
carried on a surface of the collar.
6. A child motion device according to claim 1, wherein the rotation
mechanism includes a hub carried on the upstanding post, the spring
biased protrusion carried on the hub.
7. A child motion device according to claim 1, wherein the rotation
mechanism further comprises: a collar having a surface, the
plurality of detents carried on the surface of the collar; and a
hub carried on the upstanding post, the spring biased protrusion
carried on the hub.
8. A child motion device according to claim 7, wherein the hub
seats within the surface of the collar and the spring biased
protrusion is biased radially outward against the surface of the
collar.
9. A child motion device according to claim 1, further comprising
two of the spring biased protrusions, each being carried on a metal
leaf spring positioned opposite one another on a hub of the
rotation mechanism.
10. A child motion device according to claim 1, wherein the spring
biased protrusion is carried on a resilient plastic bridge formed
integral with a hub of the rotation mechanism.
11. A child motion device according to claim 1, wherein the
rotation mechanism includes a collar protruding downward from part
of the rotation mechanism or the seat and includes a hub connected
to the upstanding post, the hub seated within and bounded by the
collar.
12. A child motion device according to claim 1, further comprising
four of the detents defining four selectable seat orientations.
13. A child motion device according to claim 1, further comprising
a pair of the spring biased protrusions and at least two pairs of
the plurality of detents, the pair of spring biased protrusions
seating in a selected pair of the plurality of detents.
14. A seat for a child motion device, the seat comprising: a seat
bottom section; a seat back section coupled to the seat bottom
section at a pair of spaced apart pivot joints, the seat back
section pivotable between at least a first recline position and a
second recline position different from the first recline position
relative to the seat bottom section; and a release mechanism
carried on the seat, the release mechanism including a release
actuator carried on the seat back section, a latch pin positioned
at each of the pivot joints remote from the release actuator, a
curved surface within each of the pivot joints, a bar extending
transversely across the seat and having curved free ends each lying
along one of the curved surfaces within a corresponding one of the
pivot joints, and holes formed in the curved free ends of the bar
and facing the latch pins, each hole corresponding to one of the
first and second recline position, wherein the release actuator,
when actuated, withdraws the latch pins from the holes in the bar,
and, when released, biases the latch pins into engagement with
respective ones of the holes in the bar.
15. A seat according to claim 14, wherein the release mechanism
includes a bent wire connected to the release actuator and
terminating at free ends defining the latch pins.
16. A seat according to claim 14, wherein the pivot joints each
include a tongue on each free end of one of the seat back and seat
bottom sections and include a yoke on each free end of the other of
the seat back and seat bottom section, the tongues received in gaps
in the yokes.
17. A seat according to claim 16, wherein the curved surfaces
include an end face on each tongue and an interior surface within
each yoke, each end face mating with and bearing against a
respective interior surface in each pivot joint.
18. A seat according to claim 17, further comprising a groove
extending along each of the end faces and interior surfaces,
wherein each curved free end of the bar is captured between the
grooves on a respective one of the end faces and interior surfaces
within the corresponding pivot joint.
Description
RELATED APPLICATION DATA
[0001] This patent is related to and claims priority benefit of
U.S. provisional application Ser. No. 61/432,099 filed Jan. 12,
2011 and entitled "Child Motion Device." The entire contents of
this prior filed application are hereby incorporated herein by
reference.
BACKGROUND
[0002] 1. Field of the Disclosure
[0003] The present disclosure is generally directed to child motion
devices, and more particularly to a child motion device with a
multi-motion adjustable seat.
[0004] 2. Description of Related Art
[0005] Child motion devices are known, such as infant swings and
the like, and typically have a seat for holding an infant or child.
Some of these devices have a seat with a seat back that can be
reclined. Known recline mechanisms require a multitude of secondary
components. One such example is the Luv'n Hug product produced by
Graco Children's Products Inc. and which has a seat back with a
recline mechanism. Some known recline mechanisms employ a large
sized mechanism, such as the recline mechanism on the Blossom High
Chair also produced by Graco. The Luv'n Hug recline mechanism
utilizes a metal recline wire, two recline plungers, and two
relatively complex recline lock housings on the sides of the seat.
The Blossom High Chair recline mechanism utilizes a metal recline
wire that engages into plastic (polypropylene) lock slots. The
slots are located a minimum of about 2 inches away from the axis of
rotation of the seat back, resulting in a minimum recline lock
moment arm of about 2 inches for the seat back to the seat
bottom.
[0006] Some child motion devices are also known to have a seat that
can be rotationally adjusted to face in different directions. In
other words, the child seat can swivel. One problem is in the
complexity and number of components typically required to deliver
or provide the swivel motion or orientation adjustment to the seat.
Most such seats have predetermined selectable stations or positions
to which the seat can be moved. Some provide an engagement
mechanism that retains the seat in a selected orientation. Some
require that the seat be completely removed fro a support frame and
then replaced on the frame in the desired orientation. The
components are typically complex and require numerous parts, which
result in added manufacturing and part cost. In one example, Fisher
Price and Kids2 have provided such seats by utilizing complex,
multiple-component assemblies. The main attribute that both designs
have is an acetyl plunger coupled with a compression spring that
snaps into indents in the mating geometry. Due to the complexity of
these products, the devices are costly while providing minimal
benefit.
[0007] Another problem with such devices is that the products are
large in size. The seats and supports or frames for these devices
are also large in size. Many of these products come pre-assembled,
thus requiring large size packaging and taking up a lot of shipping
and shelf cube space. Some of these products require assembly of
the seat to a support or frame. Such products require tools for
assembly and typically have multiple parts that must first be
assembled or installed prior to the seat being added to the support
or frame. A noted common execution can be found on the
above-mentioned Luv'n' Hug slung seat where the top seat frame is
coupled to the bottom seat frame by means of a rivet assembled by
the manufacturer. Some of these types of child motion devices have
one or more fasteners that require one or more tools and purchaser
labor to assemble the product prior to use.
SUMMARY
[0008] In one example according to the teachings of the present
invention, a child motion device has a support with an upstanding
post, a seat mounted on the upstanding post, and a rotation
mechanism. The rotation mechanism has a plurality of detents
provided on one of the seat and the post and spaced
circumferentially around and radially outward relative to the post,
and has a spring biased protrusion carried on the other of the seat
and the post. The seat can be rotated about the post to different
orientations corresponding to the position of the plurality of
detents. The spring biased protrusion is biased into and seats in a
selected one of the plurality of detents to position the seat in a
desired one of the different orientations relative to the support
frame.
[0009] In one example, the upstanding post can be part of a swing
arm on a swing.
[0010] In one example, the upstanding post can be a tube.
[0011] In one example, the rotation mechanism can have a housing
and a portion of the rotation mechanism can be carried on a
downward facing surface of the housing.
[0012] In one example, the rotation mechanism can include a collar
on an underside facing surface of the rotation mechanism or the
seat. The plurality of detents can be carried on a surface of the
collar.
[0013] In one example, the rotation mechanism can include a hub
carried on the upstanding post and the spring biased protrusion can
be carried on the hub.
[0014] In one example, the rotation mechanism can further include a
collar with a surface. The plurality of detents can be carried on
the surface of the collar. The rotation mechanism can also include
a hub carried on the upstanding post. The spring biased protrusion
can be carried on the hub.
[0015] In one example, the rotation mechanism can further include a
collar with radial inward facing surface. The plurality of detents
can be carried on the surface of the collar. The rotation mechanism
can also include a hub carried on the upstanding post. The spring
biased protrusion can be carried on the hub and the hub can seat
within the surface of the collar and the spring biased protrusion
can be biased radially outward against the surface of the
collar.
[0016] In one example, the child motion device can include two of
the spring biased protrusions. Each of the protrusions can be
carried on a metal leaf spring positioned opposite one another on a
hub of the rotation mechanism.
[0017] In one example, the spring biased protrusion can be carried
on a resilient plastic bridge formed integral with a hub of the
rotation mechanism. The protrusion can also be integral with the
hub and bridge.
[0018] In one example, the rotation mechanism can include a collar
protruding downward from part of the rotation mechanism or the seat
and can include a hub connected to the upstanding post. The hub can
be seated within and bounded by the collar.
[0019] In one example, the child motion device can further include
four of the detents defining four selectable seat orientations.
[0020] In one example, the child motion device can further include
a pair of the spring biased protrusions and can include at least
two pairs of the plurality of detents. The pair of spring biased
protrusions can seat in a selected pair of the plurality of
detents.
[0021] In one example according to the teachings of the present
invention, a seat for a child motion device has a seat bottom
section and a seat back section coupled to the seat bottom section
at a pair of spaced apart pivot joints. The seat back section is
pivotable between at least a first recline position and a second
recline position different from the first recline position relative
to the seat bottom section. The seat also has a release actuator
carried on the seat back section, a latch pin positioned at each of
the pivot joints remote from the release actuator, and a curved
surface within each of the pivot joints. A bar extends transversely
across the seat and has curved free ends each lying along one of
the curved surfaces within a corresponding one of the pivot joints.
Holes or receptacles are formed in the curved free ends of the bar
and face the latch pins. Each hole in each of the curved free ends
corresponds to one of the first and second recline positions. The
release actuator, when actuated, withdraws the latch pins from the
holes in the bar, and, when released, biases the latch pins into
engagement with one of the holes in the bar.
[0022] In one example, the release mechanism can include a bent
wire connected to the release actuator and terminating at free ends
defining the latch pins.
[0023] In one example, the pivot joints can each include a tongue
on each free end of one of the seat back and seat bottom sections
and can include a yoke on each free end of the other of the seat
back and seat bottom section. The tongues can be received in gaps
in the yokes.
[0024] In one example, the curved surfaces can include an end face
on a tongue and an interior surface within a yoke of each pivot
joint. Each end face can mate with and bear against a respective
interior surface.
[0025] In one example, the curved surfaces can include an end face
on a tongue and an interior surface within a yoke of each pivot
joint. Each end face can mate with and bear against a respective
interior surface. A groove can extend along each of the end faces
and interior surfaces. Each curved free end of the bar can be
captured between the grooves on a respective one of the end faces
and interior surfaces within the corresponding pivot joint.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Objects, features, and advantages of the present invention
will become apparent upon reading the following description in
conjunction with the drawing figures, in which:
[0027] FIG. 1 shows one example of a child motion device
constructed in accordance with the teachings of the present
invention and with the swing arm in the home position and the child
seat in a forward facing orientation.
[0028] FIG. 2 shows the child motion device shown in FIG. 1 but
with the swing arm rotated to one side.
[0029] FIG. 3 shows an exploded perspective view of the rotation
mechanism components of the seat and support frame of the child
motion device shown in FIGS. 1 and 2.
[0030] FIG. 4 shows a top view of the assembled hub portion of the
rotation mechanism shown in FIG. 3.
[0031] FIG. 5 shows a cross-section taken along line 5-5 through
the rotation mechanism of the forward facing seat and support frame
shown in FIG. 1.
[0032] FIG. 6A shows the child motion device shown in FIG. 1, but
with the seat rotated to a right side facing orientation on the
support frame.
[0033] FIG. 6B shows the rotation mechanism cross-section of FIG.
5, but with the seat in the right side facing orientation shown in
FIG. 6A.
[0034] FIG. 6C shows the rotation mechanism cross-section of FIG.
5, but with the seat rotated to a left side facing orientation
opposite the orientation shown in FIG. 6A.
[0035] FIG. 7A shows the child motion device shown in FIG. 1, but
with the seat rotated to a rear facing orientation on the support
frame.
[0036] FIG. 7B shows the rotation mechanism cross-section of FIG.
5, but with the seat in the rear facing orientation shown in FIG.
7A.
[0037] FIG. 8 shows an underside view of portions of the seat frame
of the child motion device shown in FIG. 1.
[0038] FIG. 9 shows an exploded view of the seat frame shown in
FIG. 8.
[0039] FIG. 10A shows a side view of the seat of the child motion
device shown in FIG. 1 and with the seat back section in a lowered
or reclined position.
[0040] FIG. 10B shows a cut-away section view of one side of the
seat shown in FIG. 10A and with the recline mechanism latched or
engaged.
[0041] FIG. 10C shows the side of the seat shown in FIG. 10B, but
with the recline mechanism released or disengaged.
[0042] FIG. 11A shows the side of the seat shown in FIG. 10C, but
with the seat back section of the seat in an inclined position and
the recline mechanism still released or disengaged.
[0043] FIG. 11B shows the side of the seat shown in FIG. 11A, but
with the recline mechanism latched or engaged.
[0044] FIG. 11C shows a side view of the seat of the child motion
device shown in FIG. 1, but with the seat back section in the
inclined position of FIG. 11B.
[0045] FIG. 12 shows a perspective view of an alternate example of
a seat frame construction in accordance with the teachings of the
present invention and with the seat back and seat bottom portions
disassembled.
[0046] FIG. 13 shows a cross-section taken along line 13-13 of one
side of the seat frame shown in FIG. 12 and with the seat back and
bottom sections assembled.
[0047] FIG. 14 shows a cross section, similar to FIG. 5, but of an
alternate example of a hub for the rotation mechanism constructed
in accordance with the teachings of the present invention.
DETAILED DESCRIPTION OF THE DISCLOSURE
[0048] The disclosed child motion device and its various components
solve or improve upon one or more of the above-noted and/or other
problems and disadvantages with prior known child motion devices.
In one example, a child motion device is disclosed herein that has
a seat supported on an upstanding post. The seat orientation can be
adjusted by rotating the seat relative to the post without having
to remove the seat. In one example, such a child motion device has
a rotation mechanism between the seat and the post that utilizes a
spring biased protrusion and detent arrangement permitting such
rotational adjustment of the seat and selection of one of the
plurality of optionally available seat orientations. In one
example, a child motion device as disclosed herein has a seat with
the frame constructed so that the incline or recline of the seat
back section of the seat can be adjusted by the user. In one
example, a child motion device as disclosed herein has a relatively
simple recline mechanism design that requires fewer parts and
allows for a small seat back to seat bottom joint construction. In
one example, a child motion device as disclosed herein has a
relatively simple construction allowing a purchaser or consumer to
assemble the child motion device without the need for tools. Such a
relatively simple construction also allows for a manufacturer to
package the child motion device in a relatively small container
because the components can be substantially unassembled until
purchased by a consumer. These and other objects, features, and
advantages of the present invention will become apparent to those
having ordinary skill in the art upon reading this disclosure.
[0049] Turning now to the drawings, FIGS. 1 and 2 illustrate one
example of a child motion device 20 constructed in accordance with
the teachings of the present invention. In this example, the child
motion device 20 is an orbital motion type swing or soothing
device. As will be evident to those having ordinary skill in the
art upon reading this disclosure, the various features of the
invention can be employed on other types of child motion devices
that utilize a seat for transporting and/or soothing a child or
infant. Other examples of such child motion devices include A-frame
type swings, pendulum type swings, strollers, and the like. The
inventions as disclosed herein are not intended to be limited to
use only on the disclosed orbital motion type swing example.
[0050] The child motion device 20 in this example has a base 22
with a plurality of interconnected tube segments configured to form
a ring or D-shape. A tower 24 is supported by the base 22 and
extends upward from one edge of the base. The tower 24 acts as a
backbone or spine for the child motion device in this example. The
tower 24 in this example includes a shroud 26 mounted thereon to
cover and contain the various components of the device therein. In
this example, a top surface 28 on the shroud 26 includes a
plurality of controls 30 for controlling various performance
features and characteristics of the child motion device 20. Such
performance features and characteristics can vary considerably
within the spirit and scope of the present invention. For example,
the child motion device 20 may be motorized to operate
automatically. Such a motor would typically be housed on the tower
in the shroud and the controls 30 could include ON/OFF and speed
controls. The child motion device 20 may also include audio
functions to produce soothing sounds, music, or the like, which can
also be operated by the controls 30.
[0051] In this example, the child motion device 20 has a curved,
J-shaped swing arm 32 projecting forward from the tower 24. A
proximal end of the swing arm is connected to the tower and its
components and a free or distal end of the swing arm defines an
upstanding post 34, which is oriented generally vertically. A seat
36 is carried on the post 34 and is configured to support an infant
or child above the ground on which the base 22 rests. The
configuration and construction of the seat 36 can also vary
considerably within the spirit and scope of the present invention.
In this example, the seat 36 has an oval-shaped seat frame 38
arranged in a generally horizontal orientation and supported above
a rotation mechanism 40 coupled to the post 34. Details of the seat
frame 38 and seat 36 are described in greater detail below. In
general, the seat frame 38 in this example is intended to carry a
sling-type fabric seat (not shown) that is suspended from and below
the frame but above the rotation mechanism 40. The fabric material
of the sling seat is not shown or described herein in order to more
clearly depict other components of the seat that are relevant to
the invention.
[0052] As used herein, the term post is intended to encompass a
wide range of structures on which the rotatable seat can be
mounted. The post can be a relatively small diameter, elongate tube
or solid cylinder. The post can also be a short height, small
diameter stub-like structure. The post can also have a relatively
large diameter and can be short or lengthy, as desired for a
particular seat and child motion device application. Also, the
rotation mechanism 40 can be considered as an underside of the
seat, and thus as a part of the seat, or can be considered as a
separate element positioned beneath the underside of the seat. In
the disclosed example, the rotation mechanism also defines a part
of the seat structure.
[0053] As shown in FIG. 2, the swing arm 32 is constructed to move
rotationally left and right about a vertical axis of the tower 24
as is known in the art. The swing arm 32 can be motorized to
automatically swing through a partial orbit creating a soothing
motion for a child. Alternatively, motion of the swing arm may be
imparted manually either by the seat occupant, the caregiver, or
both. The swing arm 32 and seat 36 are depicted in a home or
neutral position in FIG. 1, centered over the base 22. The swing
arm 32 and seat 36 can swing in either direction, left or right of
the home or neutral position, generally represented by the arrows S
in FIG. 2.
[0054] The configuration, contour, and construction of the base 22,
tower 24, shroud 26, swing arm 32, and seat 36 can vary from the
example shown and described herein while remaining within the
spirit and scope of the present invention. Specific ornamental,
structural, component, and assembly details of the components
disclosed and described herein can vary and yet perform as
intended.
[0055] In a disclosed example, the seat 36 can be easily reoriented
to any one of a plurality of seat facing orientations. The seat 36
is depicted in FIGS. 1 and 2 in a forward facing orientation
whereby the seat occupant would face away from the tower 24. In
other words, the head of the seat occupant would be positioned in
the seat closest to the tower. In this example, the rotation
mechanism 40 is constructed so that a user need only apply
circumferential torque to the seat 36 in order to reorient the seat
facing orientation as described below.
[0056] FIG. 3 illustrates an exploded view of the rotation
mechanism 40 in this example. In general, the rotation mechanism 40
includes one or more spring biased protrusions that can seat in a
selected one of a plurality of detents. The one or more protrusions
and detents help to retain the seat in a selected seat facing
orientation. However, the spring bias can be overcome when the
caregiver applies a torque to the seat in order to change its
orientation, as described below. Either one or the other of the
detents or protrusions can be stationary relative to the post 34
and the other one of the detents or protrusions can move as the
seat 36 is rotated to change the seat facing orientation.
[0057] In the disclosed example, the rotation mechanism 40
generally includes a housing 42 with a lower base portion 44 and an
upper cover portion 46. A plurality of fasteners 48 and standoffs
50 can be utilized, either by the manufacturer or the consumer, to
assemble the housing and to secure the cover portion over the base
portion. When assembled, the combination of the base and cover
portions 44 and 46 create a cavity 52 within the housing 42. In
this example, the base portion 44 has an extension 54 extending
from one side and which curves upward and terminates at a frame
segment 56. The frame segment 56 defines a portion of the seat
frame 38, as described below, and, in part, aids in supporting the
seat frame 38 above the rotation mechanism 40.
[0058] As shown in FIGS. 3 and 5, a support cylinder 62 is
positioned within the cavity 52 of the base portion 44 and is
oriented generally vertically. The cylinder 62 is positioned
surrounding the top of the post 34 and concentric therewith, as
shown in FIGS. 1 and 3. A plurality of radially extending ribs 64
extend radially inward from the support cylinder 62. The top of the
post 34 protrudes upward through and within the ribs when the base
portion 44 of the housing 42 is installed on the post 34. A pivot
hub 66 has a tubular shaft 68 protruding downward and has a flange
70 on the upper end of the shaft. The lower end of the shaft 68 has
a pair of opposed notches 72. Stop pins or bosses 74 are affixed to
and protrudes from the outer surface of the post 34 and are spaced
downward from the top of the post. The shaft 68 of the hub 66
extends downward into the support cylinder 64 and is sized to fit
over the exposed top of the post 34 and within the spacing of the
ribs 64. The stop pins or bosses 74 seat in the notches 72 when the
hub 66 is installed. The notches 72 and bosses 74 rotationally
affix the hub 66 relative to the post 34. However, the housing 42,
including the support cylinder 62 and ribs 64, can rotate relative
to the post 34 and thus the fixed hub 66.
[0059] The flange 70 has a diameter that is larger than the
diameter of the support cylinder 62 and thus rests on top of the
support cylinder when the rotation mechanism 40 is assembled. The
flange 70 has an open central region 76 that also has a diameter
that is larger than the diameter of the shaft 68. Thus, an upward
facing shoulder 80 is formed therein, recessed downward within the
central region 76 of the hub 66.
[0060] A snap fastener 82 is utilized to interconnect the hub 66,
the base portion 44 of the housing 42, and the post 34. A pair of
slots 84 are formed through the post opposite one another and
spaced near the top edge of the post 34. The snap fastener 82 has a
top cap 86 and the downward depending leg 88. A tab 90 protrudes
radially outward from the leg in one direction. In an inverted
V-shape resilient arm 92 is connected to the lower end of the leg
88 on a side opposite the tab 90. The resilient arm 92 has an elbow
94 at its upper end. A nub 96 protrudes from a free end of the
resilient arm 92 below the elbow 94. The snap fastener 82 can be
pushed downward into the central region 76 of the hub 66 until the
top cap 86 seats against the shoulder 80. The tab 90 will seat in
one of the slots 84 and the nub 96 on the resilient arm 92 will
snap into the other of the slots 84, securing the snap fastener 82
in place within the post 34. With the snap fastener 82 fixed to the
post, the top cap 86 will capture and retain the hub 66, as well as
the base portion 44 of the housing 42, between the top cap and the
bosses 74 on the post 34.
[0061] The cover portion 46 can then be installed on the base
portion 44 by inserting the fasteners 48 and securing them to the
standoffs 50. In one example, each of the fasteners 48 can be a
one-way push-in fastener that does not require use of a tool and
that would engage and be retained in the corresponding standoffs
50. In another example, the fasteners 48 could be conventional
fasteners requiring a tool such as a screwdriver for installation.
In still another example, the cover portion 46 can be secured to
the base portion 44 by the manufacturer and can include an opening
therein that is large enough to receive the snap fastener 82. In
such an example, the consumer would not need to install any
fasteners 48 to assemble the housing 42. The rotation mechanism 40
can be secured to the post 34 simply by installing the snap
fastener 82. A separate snap on cover could be provided to cover
the opening in the cover portion 46 once the snap fastener 82 is
installed. Such an example would eliminate the need for fasteners
and tools when the consumer assembles the product.
[0062] Also as shown in FIG. 3, the underside of the cover portion
46 includes a collar or ring 100 protruding downward into the
cavity 52. The diameter of the collar or ring 100 is sized to
closely fit around the flange 70 when the housing 42 is assembled.
In this example, a plurality of interior, radially extending ribs
102 and a structural ring 103 also protrude downward from the cover
portion 46 within the perimeter of the collar or ring 100. These
ribs 102 and ring 103 add rigidity to the collar 100 and can be
configured to seat within the central region 76 of the hub 66 in
order to help align and retain alignment between the hub and the
collar or ring 100. A plurality of female detents or recesses 104
are formed into the interior surface of the collar or ring 100. In
this example there are four such female detents or recesses 104
spaced 90.degree. equidistant from one another and
circumferentially around the collar or ring 100.
[0063] The flange 70 of the hub 66 in this example includes a pair
of spring retainers 106 formed in opposite edges of the flange. A
metal leaf spring 108 is seated in each of the spring retainers
106. Each of the leaf springs 108 includes a central male
protrusion 110 that projects radially outward from the perimeter
edge of the flange 70. In this example, the male protrusions 110
are arranged 180.degree. opposite one another on the flange 70. The
protrusions 110 are spring biased in this example by the resiliency
of the leaf spring, which can be made from spring steel or the
like. Each of the protrusions 110 can be pushed radially inward by
applying a force against the protrusion to overcome the biasing
force of the spring steel. FIG. 4 shows a top view of the assembled
hub 66 including the snap fastener 82 and the leaf springs
including the protrusions 110. The opposed free ends of the leaf
spring 108 are retained by the spring retainers 106. The springs
108 can vary from the leaf spring example shown and described
herein. The intent it to have the protrusions and detents
resiliently movable relative to one another to create distinct,
user selectable and determinable rotational orientations for the
seat while permitting the seat to be selectively rotated among the
orientations.
[0064] As noted above, the pivot hub 66 in this example is affixed
to the post 34 and does not rotate relative to the post. Thus, the
flange 70 and the leaf springs 108 are also rotationally fixed
relative to the post. As the seat 36 is rotated on the post 34, the
ring or collar 100 will thereby rotate relative to the springs.
This in turn will rotate the detents or recesses 104 relative to
the springs. The protrusions 110 on the pair of leaf springs 108
are arranged to seat in any opposed pair of the detents or recesses
104 in the ring or collar 100. As shown in FIG. 5, the protrusions
110 in this example are directed one toward and one away from the
tower 24 and are aligned parallel to the neutral or home position
of the swing arm 32. The rotation mechanism 40 is illustrated in a
forward seat facing position in FIG. 5, which represents the seat
36 as shown in FIG. 1. The protrusions 110 are seated in the
opposed pair of detents or recesses 104 that are also aligned
lengthwise relative to the seat 36.
[0065] If a user or caregiver wishes to change the seat facing
orientation of the seat 36, they can easily do so on the disclosed
child motion device 20, without having to remove the seat from the
support base 22. Doing so will change the motion characteristics
that are imparted to a child or infant seated in the seat 36. This
is because the child will face in a different direction relative to
the swinging or movement direction of the seat 36, depending on the
orientation of the seat. The user can grasp the seat frame 38 and
apply a torque to the seat 36 that is sufficient to overcome the
biasing force of the leaf springs 108. The protrusions 110 will
unseat from the detents 104 in which they are seated and then ride
along the interior surface of the collar 100 at the seat is
rotated. As shown in FIG. 6A, the seat 36 can be rotated to a right
side facing orientation. The protrusions 110 of the leaf springs
108 will align with and fire into the pair of detents 104 that are
arranged laterally across the collar 100. This orientation of the
rotation mechanism 40 is depicted in FIG. 6B. Though not shown
herein, the seat 36 can also be rotated in the opposite direction
so that the seat is oriented facing to the left. This orientation
of the rotation mechanism 40 is depicted in FIG. 6C Likewise, the
user may wish to reorient the seat 36 so that it faces in a
rearward direction toward the tower 24. This rear seat facing
orientation is depicted in FIG. 7A and the corresponding
orientation of the rotation mechanism 40 is depicted in FIG.
7B.
[0066] As will be evident to those having ordinary skill in the
art, the configuration and construction of the rotation mechanism
40 can vary considerably from the example shown and described
herein. In one example, a cylindrical recess can be provided in a
surface of the seat or rotation mechanism housing replacing the
protruding ring or collar 100 Likewise, a hub-like protrusion can
be provided on the downward facing cover portion 46 of the housing
42 or on part of seat, if desired. Similarly, a cylindrical recess
or a protruding ring or collar could be provided in or on the
upward facing base portion 44 of the housing 42 or the like.
Additionally, only a single spring biased protrusion need be
utilized, or three or more such protrusions could be utilized. The
number and position of the detents or recesses 104 can also vary
from the four shown and described herein, creating more or fewer
selectable seat orientations. Still further, the one or more spring
biased protrusions 110 can be provided within a recess or on the
ring or collar and the corresponding detents or recesses can be
provided on the flange of the hub. Other such spring biased detent
arrangements can be employed within the spirit and scope of the
present invention.
[0067] The foregoing aspects of the present invention include an
easy to assemble rotation mechanism 40 and result in a simple to
use rotation adjustment scheme for the seat 36. Such a seat
construction can be utilized on other different types of child
motion devices, other than the orbital motion type swing disclosed
herein, if desired.
[0068] The disclosed rotation mechanism achieves the same
performance as the competitive designs, but is obtained through a
minimalistic design approach that allows seat swivel or rotational
adjustment, while keeping part costs down. The spring/male plunger
or protrusion component mates with the female geometry on the seat,
i.e., the housing 42. The spring/male plunger component is keyed to
the swing arm post 34 as the caregiver rotates the seat around the
stationary post or swing arm, which carries the spring/male plunger
component. When the seat is rotated, the male plungers or
protrusions ramp out of the female detent geometry in the underside
of the seat and the spring deflects to allow the relief. The seat
is then free to rotate until the male plungers or protrusions hit
the next female detents.
[0069] The male plunger or protrusion and the spring could
alternatively be achieved by utilizing a Valco-ball like component
that is fixed to the swing arm. Substitute materials for the male
and female mating geometry could be nylon, acetyl, polypropylene or
the like.
[0070] The disclosed rotation mechanism for this aspect of the
invention uses significantly less components than comparable
systems. The reduction in components leads to a reduction of
material usage and the amount of assembly required. Therefore, the
primary functionality of the disclosed swiveling ratchet type
rotation mechanism is met while meeting much lower product cost
requirements.
[0071] In another aspect of the present invention, the seat 36 and
seat frame 38 include a recline mechanism or feature that is also
simple to use and of relatively simple construction. FIGS. 8 and 9
show the basic components of the seat frame 38 and recline
mechanism. In this example, the recline mechanism generally has
pivot joints on the sides of the seat frame 38, latches on the
pivot joints, and a release mechanism to actuate, i.e., engage or
disengage, the latches. The seat frame 38 has a seat back section
120 that is generally an inverted U-shape and configuration. The
seat frame 38 also has a seat bottom section 122 connected to the
seat back section. In this example, two opposed seat bottom
segments 124 are connected to free ends of the seat back section
120 and to ends of the earlier described frame segment 56, which is
carried as an integral part of the extension 54 of the rotation
mechanism 40. When joined to one another, the frame segment 56 and
pair of seat bottom segments 124 together form the seat bottom
section 122. The seat frame 38 lies generally horizontally during
use and would support a sling type fabric seat. Such a seat is
suited for infants.
[0072] The seat frame 38 has a bar 126 that is generally U-shape
and extends transversely across the seat frame. A mid-portion 128
of the bar 126 is secured to a top side of the cover portion 46 on
the housing 42 of the rotation mechanism 40. The bar 126 can be
secured by fasteners to the housing 42 of the rotation mechanism
40, or can snap into a groove 129 formed thereon, if desired, or
both. The bar 126 also has a pair of upstanding leg portions 130
extending from the mid-portion 128. Free curved ends 132 extend
from the leg portions 130 and are bent in a forward direction.
[0073] The seat frame 38 is assembled via a tongue and groove type
pivot joint 133 on each side of the seat frame. In this example,
each free end of the seat back section 120 has a yoke 134 with a
space or gap 136, i.e., a groove, between spaced apart legs 138 of
the yoke. A free end of each of the seat bottom segments 124 has a
tongue 140 correspondingly sized and shaped to fit within the gap
or space 136 on a respective one of the yokes 134. An end face 142
on each tongue 140 has a consistent radius of curvature in this
example. An interior face 144 within each yoke 136 is
correspondingly shaped or curved to mate with and bear against the
end face 142 within the yoke 134. In this example, the end face 142
on each tongue 140 has a convex curvature and the interior face 144
within each yoke 134 as a concave curvature when assembled. A pivot
pin 146 pivotally joins the two seat sections 120 and 122 together.
In this example, the pivot pin 146 has a threaded end 148 for
receiving a nut 150 thereon to secure the pins in place, connecting
the seat back section 120 to the seat bottom segments 122. The
pivot pins 146 define the pivot axis of movement for the seat back
section 120 when it is moved to adjust the seat recline.
[0074] In this example, each of the end faces 142 and interior
faces 144 within each joint has a lengthwise groove 152, 153,
respectively, formed therealong. The curved ends 132 of the bar 126
are captured between the corresponding grooves 152, 153 in the
surfaces within each joint. The bar 126 can have one or more holes
154 formed therethrough near the free tips of the curved ends 132.
Fasteners (not shown) can be received through these holes to secure
and fasten the bar to the seat frame 38, if desired.
[0075] As shown in FIGS. 10A-11C, the seat back section 120 can
pivot relative to the seat bottom segments 124 at the pivot joints
133. The seat back section 120 can be reclined to a lowered
position as depicted in FIG. 10A and can be elevated to an inclined
or raised position as depicted in FIG. 11C. As will be evident to
those having ordinary skill in the art, additional intermediate
positions can also be provided. In order to allow for recline
adjustment of the seat back section 122, a release mechanism 160 is
provided on the seat back section as shown in FIGS. 8 and 9. The
release mechanism includes a one-piece bent wire 162 having a
central segment 164 and a pair of elongate, curved latch segments
166 extending from the central segment. The latch segments 166 are
configured to generally correspond in shape to the curvature and
contour of the seat back section 122 of the seat frame 38. In this
way, the bent wire 162 can generally underlie the seat back section
and be hidden from view.
[0076] The terms upward, downward, and vertical are used in the
following description with reference to the orientation of the seat
frame 38 in FIGS. 8 and 9 merely to simplify the description.
During use, it would be apparent that the actual motion of the
release mechanism components would be fore and aft with reference
to the generally horizontal seat frame orientation.
[0077] The release mechanism 160 includes a release actuator 168
connected to the seat back section 120 and to the central segment
164 of the bent wire 162. In this example, the release actuator 168
has a pair of vertically slots 170 formed therethrough. Fasteners
172 are received through the slots 170 to fasten the release
actuator 168 to the mid-point of the seat back section 120. The
slots 170 allow for vertical travel of the release actuator 168.
The travel distance of the release actuator 168 is limited by the
length of the slots 170 and the fasteners 172 captured therein. A
spring 174 biases the release actuator 168 downward in this
example, which in turn biases the bent wire downward. An upward
force can be applied by a user's hand to overcome the biasing force
of the spring 174 and move the release actuator 168 upward.
Movement of the release actuator 168 upward also moves the bent
wire 162 upward.
[0078] As shown in FIG. 10B, each of the latch segments 166 of the
bent wire 162 terminates at a tip that defines a latch pin 176
protruding into the corresponding pivot joint 133. A plurality of
holes 178a, 178b are formed in a portion of the curved ends 132 of
the bar 126 positioned along the grooves 152, 153 in this example.
Each of the plurality of holes 178a, 178b define a different
recline position for the seat back section 120. As shown, the holes
178a, 178b are exposed within the pivot joint 133 and face the
respective pin 176 therein. In this example, the pins 176 are
received in a lower most one of the holes 178a with the seat back
section 122 in the lowered or reclined position and with the
release mechanism in a latched or engaged condition.
[0079] The user can actuate the release mechanism 160 by grasping
and pulling upward on the release actuator 168, i.e., by squeezing
the actuator into the seat back section 120, to overcome the force
of the spring 174. The pins 176 are then withdrawn from the holes
178, as shown in FIG. 10C. The seat back section 120 is then free
to rotate upward from the lowered position to the raised or
inclined position as depicted in FIG. 11A. In this position, the
pins 176 aligned with the uppermost holes 178b in the bar 126. If
the user had previously released their grip on the release actuator
168, the pins 176 would ride along the curved ends 132 of the bar
126 lying against the faces 142 of the tongues 140 on the seat
bottom segments 123. The pins 176 would fire into the uppermost
holes 178b when aligned therewith. Otherwise, the user can then
release their grip on the release actuator 168 so that the pins 176
can fire into and engage the holes 178b as depicted in FIG. 11B.
With the pins 176 engaged in the uppermost holes 178, the seat back
section 120 is latched in the raised or inclined position as
depicted in FIG. 11C.
[0080] As will be evident to those having ordinary skill in the
art, the configuration and construction of the release mechanism
160 and the other recline components, such as the pivot joints 133
can vary within the spirit and scope of the present invention. The
curvature of the mating pivot joint surfaces 142, 144 can be
reversed so that the end faces of the tongues 140 are concave in
the interior faces 144 of the yokes 134 are convex. Likewise, the
tongue and groove-type pivot joint parts can be reversed on the
seat back section 120 and seat bottom segments 122. Also, the pivot
joints can be altered to a different type of pivot joint structure,
if desired. In this particular example, the pivot joint
construction provides a relatively compact joint requiring few
components. The latch receptacle holes 178a, b are provided
directly in the bar 126 which also serves as a structural support
for the seat structure. The pivot joints 133 only require the pivot
pin connecting the two seat sections in this example.
[0081] The disclosed recline and release mechanisms provide a
robust, yet simple, recline mechanism in a cost efficient manner.
The mechanisms take up very little space on the product, thus
helping to minimize the overall size of the device and mechanism.
The disclosed mechanism also help decrease the distance between the
recline holes and the axis of rotation, i.e., the pins 146 of the
reclining seat back section.
[0082] The recline position holes 178a,b are fabricated in a metal
tube of the seat structure, i.e., the transverse bar 126. The metal
component can be pre-assembled on the seat and can be a key
structural member of the seat construction, which can be referred
to as the seat bight tube. Integrating the array of recline holes
into the steel of the tube allows for utilizing a material with
significantly higher mechanical properties compared to the
surrounding plastic of the seat frame. The added strength of the
holes allows for a reduced moment arm length between the pins 146
and the latch pins and holes. The steel seat bight tube 126 also
can act as a robust hard stop to prevent the seat back section of
the seat frame from rotating past the set minimum rotational angle.
Further, the recline mechanism requires few parts in creating this
feature.
[0083] One execution for this aspect of the invention may be to
leverage existing components in the seat that have high mechanical
strength properties. By executing this practice, a higher return of
subsystem performance can be achieved with a minimal negative cost
impact. Therefore, the holes can be provided in the steel seat
bight tube and the recline wire 162 can also be made of steel wire.
The seat frame and pivot joint components surrounding the latch
pars, i.e., the bar 126 and wire 162 can be constructed of
reasonably priced plastic, such as polypropylene.
[0084] Another way to execute this aspect of the invention in a
similar fashion would be to use a secondary component(s) for the
metal recline slots. Such secondary components could be a
fabricated sheet metal component or an additional metal tube
assembled to the seat structure within the pivot joints.
[0085] The male portion, i.e., the pins 176 of the recline
mechanism are not limited to being constructed of metal wire. A
metal tooth that is fixed to the seat back section could be
utilized. The metal tooth could rotate or translate into and out of
the metal holes in numerous ways. Also, other materials such as
plastics or composites can be used for the male portion and/or
female parts as well.
[0086] The disclosed recline mechanism 160 allows for a smaller
overall size required for a commonly used plunger into plastic slot
execution; while also delivering higher mechanical properties.
[0087] FIGS. 12 and 13 depict an even simpler pivot joint
construction that eliminates the pivot pins 146 and nuts 150
described previously. In this example, the seat back section of the
seat frame includes an integral, male pivot boss 200 within the gap
or space of the yoke. The bosses 200 project inward from and
between the legs 202 of the yoke 203. Each seat bottom segment
includes a corresponding guide track 204 on each side face of the
tongue 206. Each guide track 204 is essentially open at the top 205
and terminates in a female receptacle, depression, or hole 208
through or into the tongue 206 at the bottom end of the track. In
order to assemble the seat frame in this example, the user need
only align the pivot bosses 200 with the open tops 205 of the guide
tracks 204 and then push downward on the yoke 203 of the seat back
section. Once the pivot bosses 200 align with the holes or recesses
208 at the bottom of the tracks, the bosses will pop into the holes
or depressions, securing the seat back section to the seat bottom
segments. The seat back section can pivot about the bosses 200
relative to the seat bottom segments in this example. As shown in
FIG. 13, the walls of the guide tracks 204 can be gradually tapered
further apart. The bosses can thus easily slide into the open tops
205 of the tracks 204 and then experience increased outward force
as the track surfaces gradually move apart. This will allow for the
protrusions 200 to forcibly fire into the holes 208 when
assembled.
[0088] In this example, the seat can be more collapsible to fit
into smaller packaging, as with the prior example. With a seat that
is broken down in packaging, the packaging overall size is reduced.
Therefore, shipping costs of the product and required storage space
during shipping and on store shelves or in warehouses can also be
reduced. Also, the seat back section can easily assemble to the
seat bottom section in this example simply by sliding and snapping
the sections together as shown in FIG. 13. Having the two
components couple together without secondary components, such as
the aforementioned pins 146 and nuts 150, helps keep part costs
down while still allowing for the smaller required shipping
cube.
[0089] This example of a pivot joint construction also can help to
maintain good user experience of the assembly so as to reduce
customer assembly frustrations. The seat frame utilizes two
male/female snap connections per each side of the seat frame. The
dual snap connections help to lock the seat bottom segments to the
seat back section securely. The snap connection can withstand
forces applied in all directions of pull in an attempt to separate
the two components. As the seat back section is being coupled to
the seat bottom segments, flex finger-like walls on the tongues can
deflect to allow the connection. The flex finger-like walls can
then rebound and capture the male bosses. The walls act as a barb
to not allow the boss to disconnect.
[0090] This example could potentially be executed without the use
of the flex finger walls of the tongues. In such an example, the
plastic structure around the male bosses and female holes or
depressions could all deflect to allow for the coupling of the male
to female parts. Also, one could reverse or swap the location of
the male and female parts between the seat sections. This is
equally true for any of the connection embodiments disclosed
herein. One male boss and one female hole could be located on the
seat bottom section while the other female hole and male boss could
be located on the seat back section. Alternatively, both male
bosses could be located on the seat bottom section and both female
holes could be on the seat back section. In either embodiment, the
tongues and yokes could also be swapped or reversed.
[0091] The seat back and seat bottom components can be made from
plastic, such as polypropylene. Using this type of material may
help reduce the chances of the flex finger walls breaking off
during assembly, i.e., under deflection. However, all of the
foregoing examples can be executed in many different materials such
as other plastics, metals, woods, or the like.
[0092] This aspect of the invention, whether utilizing the pins 146
or the snap connections, allows for the seat to be more collapsible
in packaging. With a seat that is broken down in packaging, the
packaging overall size can be reduced, thus reducing shipping and
storage costs of the product. Also, having the two components
couple together without secondary components or the need for tools
helps keep part costs down and maintains a good user experience
during assembly of the product by a user, which in turn can reduce
customer assembly frustrations.
[0093] In another example, FIG. 14 shows a pivot hub construction
that eliminates the need for the separate leaf springs 108
described previously. In this example, the pivot hub 220 includes
an integral plastic bridge 222 molded directly to the hub flange
224 on two opposed edges of the hub. Each plastic bridge 222 has a
relief opening 226 in the flange 224 that is adjacent the bridge.
The relief openings 226 allow for protrusions 228 carried on the
radial outward facing sides of the bridges 222, to flex toward the
relief openings 226. The resiliency of the plastic bridges will
bias the protrusion 228 outward, similar to the earlier described
leaf springs 108. In this alternative example, the male spring
biasing element of the swivel structure is integrated into the hub
flange and creates a male plunger or protrusion and spring (bridge)
in a single integral component.
[0094] One execution of this example would be to manufacture the
hub, flange, bridge, and protrusion component out of Acetyl. The
mating female geometry of the collar on the seat underside can be
manufactured from high density polyethylene (HDPE). Utilizing
Acetyl for the male protrusion and bridge will help to reduce
friction in the system and provide a good flex life of the integral
spring. The HDPE will provide good wear resistance, good stiffness,
and the cost of the material will be much lower compared to other
usable plastic grades. Other materials can certainly be used,
however, including metal or spring steel for the spring/male
plunger and/or the collar or ring, as noted above.
[0095] Clearly, other alternate variations of the aforementioned
components for the recline mechanism, release mechanism, the
rotation mechanism, and the various fastener-less connections are
within the spirit and scope of the present invention. A number of
examples are disclosed and described herein that eliminate
conventional fasteners, and thus the need for tools, for use when
assembling the product. The disclosed child motion device and its
features can simplify assembly of the device, thus allowing the
manufacturer to package and ship the device at least partly
unassembled. This also allows the retailer to sell the child motion
device in the unassembled state because it will be relatively easy
for the consumer to assemble the product prior to use.
[0096] Although certain seat components and part arrangements for
child motion devices have been described herein in accordance with
the teachings of the present disclosure, the scope of coverage of
this patent is not limited thereto. On the contrary, this patent
covers all embodiments of the teachings of the disclosure that
fairly fall within the scope of permissible equivalents.
* * * * *