U.S. patent number 3,818,154 [Application Number 05/349,547] was granted by the patent office on 1974-06-18 for joystick type controller for switches.
Invention is credited to Shelley M. Presentey.
United States Patent |
3,818,154 |
Presentey |
June 18, 1974 |
JOYSTICK TYPE CONTROLLER FOR SWITCHES
Abstract
A monocontrol mechanism for magnetic tape recorders wherein a
lever is movable lengthwise and is pivotable in a universal joint
which is mounted in a sealed housing. The lever can be depressed by
hand against the opposition of a spring to thereby disengage a
portion thereof from the locking device in the housing and to be
thereupon pivotable between a number of predetermined positions
against the opposition of an indexing device which is designed to
yieldably hold the lever in any selected predetermined position.
Once the pressure upon the lever is terminated, the spring is free
to expand and reengages the lever with the locking device. The
lever can actuate one or more electric switches, gears, links
and/or other controlled units in the housing during movement to or
from the predetermined positions.
Inventors: |
Presentey; Shelley M. (Ottawa
K2C2E2, CA) |
Family
ID: |
23372861 |
Appl.
No.: |
05/349,547 |
Filed: |
April 9, 1973 |
Current U.S.
Class: |
200/6A; 74/471XY;
200/17R |
Current CPC
Class: |
G05G
5/06 (20130101); G05G 9/047 (20130101); G05G
9/04796 (20130101); G05G 2009/04766 (20130101); G05G
2009/04777 (20130101); G05G 2009/0477 (20130101); Y10T
74/20201 (20150115); G05G 2009/04707 (20130101); G05G
2009/04744 (20130101) |
Current International
Class: |
G05G
5/00 (20060101); G05G 9/047 (20060101); G05G
5/06 (20060101); G05G 9/00 (20060101); H01h
025/04 () |
Field of
Search: |
;200/6A,17R,18
;74/471R,471XY |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
|
|
|
|
|
1,222,144 |
|
Aug 1966 |
|
DT |
|
1,098,971 |
|
Jan 1968 |
|
GB |
|
Primary Examiner: Scott; James R.
Attorney, Agent or Firm: Striker; Michael S.
Claims
What is claimed as new and desired to be protected by Letters
Patent is set forth in the appended claims:
1. In a structure of the character indicated, such as a magnetic
tape recorder, a combination comprising a support; an elongated
control member; a joint installed in said support and mounting said
control member for pivotal movement between a plurality of
predetermined positions and for lengthwise movement between first
and second positions, said control member being movable lengthwise
in each of said predetermined positions; biasing means for urging
said control member to said first position; locking means including
a first portion provided in said support and a second portion
provided on said control member and arranged to engage said first
portion in said first position of said control member so as to hold
the latter against movement between said predetermined positions;
indexing means including a first section provided in said support
and a second section provided on said control member and
cooperating with said first section to yieldably oppose the
movements of said control member between said predetermined
positions, at least in said second position of said control member
and to locate said control member in the selected predetermined
position thereof; and at least one controlled unit actuatable by
said control member in response to movement of said control member
to one of said predetermined positions.
2. A combination as defined in claim 1, wherein said support is a
housing and said control member is a lever having a first portion
located within said housing and including said second portion of
said locking means and said second section of said indexing means,
said lever further having a second portion which extends from said
housing and is accessible for manual movement of said lever from
said first to said second position against the opposition of said
biasing means and thereupon between said predetermined positions
against the opposition of said indexing means.
3. A combination as defined in claim 1, wherein said controlled
unit is an electric switch.
4. A combination as defined in claim 1, further comprising motion
transmitting means interposed between said control member and said
controlled unit and arranged to actuate said controlled unit in
response to movement of said control member to said one
predetermined position.
5. A combination as defined in claim 1, wherein said joint is a
universal joint.
6. A combination as defined in claim 1, wherein said first section
of said indexing means comprises a plurality of rollers and
resilient means for biasing said rollers toward each other, said
second section of said indexing means including a homing portion
provided on said control member and arranged to move between a pair
of said rollers against the opposition of said resilient means in
response to pivotal movement of said control member to or from a
predetermined position.
7. A combination as defined in claim 1, wherein said first section
of said indexing means comprises a face cam and said second section
of said indexing means comprises a follower which tracks said face
cam during pivotal movement of said control member between said
predetermined positions, said first section further comprising
means for biasing said face cam against said follower in all
positions of said control member.
8. A combination as defined in claim 1, wherein said first portion
of said locking means comprises a plurality of cavities one for
each of said predetermined positions of said control member, and
said second portion of said locking means comprises a locking
element which extends into the corresponding cavity in each
predetermined position of said control member and while said
control member assumes said first position thereof.
9. A combination as defined in claim 1, wherein said first portion
of said locking means comprises a plurality of projections and said
second portion of said locking means comprises a cupped element
which receives selected projections of said first portion in each
of said predetermined positions of said locking member and while
said locking member assumes said first position.
10. A combination as defined in claim 1, wherein said predetermined
positions include a neutral position and a plurality of additional
positions, said locking member being pivotable between said
additional positions by moving through said neutral position.
Description
BACKGROUND OF THE INVENTION
The present invention relates to actuating mechanisms in general,
and more particularly to improvements in so-called monocontrol
mechanisms wherein a single lever or an analogous control member
can initiate and/or terminate a plurality of similar or widely
different operations, e.g., by completing and/or opening discrete
electric circuits or effecting translatory, angular or other
movements of links, gears or analogous motion transmitting parts.
Still more particularly, the invention relates to improvements in
actuating mechanisms wherein a single control member can be used to
select any one of a number of different conditions or settings of
an apparatus, machine, instrument or the like by the exertion of a
predetermined force, for example, to change the setting of a sound
recording and/or reproducing apparatus.
SUMMARY OF THE INVENTION
An object of the invention is to provide a novel and improved
monocontrol actuating mechanism which can be installed in or
assembled with existing or presently known multistatus apparatus to
select the status of such apparatus from a single point, with the
exertion of a preselected force, and with a high degree of accuracy
and reproducibility.
Another object of the invention is to provide a monocontrol
actuating mechanism which can be used to change the mechanical
and/or electrical status of equipment.
A further object of the invention is to provide a monocontrol
actuating mechanism with novel and improved indexing, sealing,
locking and mounting means.
The invention is embodied in a structure which can be installed in
a magnetic tape recording or reproducing apparatus and comprises a
support (e.g., a sealed housing), an elongated control member (such
as a lever a portion of which extends from the housing), a joint
(preferably a universal joint) installed in or on the support and
mounting the control member for pivotal movement between a
plurality of predetermined positions and for lengthwise movement
between first or idle and second or operative positions, a helical
spring or analogous biasing means for urging the control member to
the first position (the control member is movable from the first to
the second position by overcoming the action of the biasing means
in each predetermined position of the control member), locking
means including a first portion mounted in the support and a second
portion which is provided on the control member and serves to
engage the first portion in the first position of the control
member so that the latter is held against movement between the
predetermined positions, indexing means including a first section
mounted in the support and a second section provided on the control
member and cooperating with the first section to yieldably oppose
movements of the control member between the predetermined positions
in the second position of the control member and to locate the
control member in a selected predetermined position, and at least
one electric switch, gear, link, lever or an analogous controlled
unit which is actuatable in response to movement of the control
member to one of its predetermined positions. For example, the
control member may be pivoted between five different predetermined
positions and the apparatus may include four electric switches
which are actuated in response to movement of the control member to
four of the five predetermined positions. The fifth predetermined
position may constitute a neutral position through which the
control member must pivot in order to move from or to those
predetermined positions in which it actuates the corresponding
switches.
The novel features which are considered as characteristic of the
invention are set forth in particular in the appended claims. The
improved monocontrol mechanism itself, however, both as to its
construction and its mode of operation, together with additional
features and advantages thereof, will be best understood upon
perusal of the following detailed description of certain specific
embodiments with reference to the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is an axial sectional view of a monocontrol mechanism which
embodies one form of the invention;
FIG. 2 is an axial sectional view of a second monocontrol
mechanism;
FIG. 3 is a sectional view as seen in the direction of arrows from
the line III--III of FIG. 2; and
FIG. 4 is a sectional view as seen in the direction of arrows from
the line IV--IV of FIG. 2.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring first to FIG. 1, there is shown a monocontrol mechanism
which comprises a control member or lever 1 pivotable between five
different predetermined positions including a central or neutral
position which is indicated by solid lines. The control member is
movable relative to a housing or support including two mounting
plates 7 and 7a which have registering openings for a receptacle 5
having external threads mating with the internal threads of a
mounting fixture 6 provided with a tubular seal 3 secured to the
head 1a of the control member 1. The latter further comprises a
shank 1b slidably extending through a diametral bore of spherical
swivel 4 in the receptacle. A helical spring 2 reacts against the
swivel 4 and bears against the head 1a to urge the shank 1b
upwardly, as viewed in FIG. 1. The spring 2 is mounted in the
interior of the seal 3 and surrounds the shank 1b. A sealing
element 6a is interposed between the outer side of the mounting
plate 7 and the polygonal lower end portion 6b of the fixture 6. A
flange 5a of the receptacle 5 abuts against the inner side of the
mounting plate 7a. A lower or inner end portion 5b of the
receptacle 5 below the flange 5a has five locking cavities or
recesses 9 each of which can receive a complementary locking
element 8 at the inner end of the shank 1b.
The shank 1b comprises an extension having a spherical enlargement
or link coupling 10 which is located between linkages 15 provided
with a cylindrical sleeve 16. The latter receives the link coupling
10 with minimal clearance but allows the shank 1b to more axially
or lengthwise between the illustrated first position and a second
or operative position. The lowermost or innermost part 11 of the
shank 1b constitutes a homing portion or follower which cooperates
with an axially movable plain indexing table 12 here shown as a
face cam, having in its upper side five indexing cavities 12a and
furher comprising a shaft 12b slidably extending into a bushing 14.
The indexing table 12 is biased against the homing portion or
follower 11 by a helical spring 13 which reacts against the bushing
14.
The parts 5b and 8 constitute two portions of a locking means which
can hold the control member 1 against pivotal movement with the
swivel 4 of the universal joint 4, 5, when the control member 1
assumes the illustrated first axial position. The parts 12-14 and
11 constitute first and second sections of an indexing means which
yieldably opposes pivotal movements of the control member 1 when
the latter assumes its second axial position and which locates the
control member in a selected predetermined position.
The operation:
In order to change the angular position of the control member 1,
the user depresses the head 1a in the direction indicated by arrow
A to stress the spring 2 and to expel the locking element 8 from
the central locking cavity 9 in the inner end portion 5b of the
receptacle 5. At the same time, the homing portion 11 of the shank
1b depresses the indexing table 12 against the opposition of the
spring 13. The shaft 12b is a relatively loose fit in the axial
bore of the bushing 14 which is provided with suitable means (e.g.,
a spline 14a) to hold the table 12 against rotation.
The user thereupon pivots the control member 1 with the swivel 4
(for example, in the direction indicated by arrow B) so as to move
the locking element 8 into register with the right-hand cavity 9 of
FIG. 1. This causes the homing portion 11 to ride over a ridge or
hump 12c on the upper side of the indexing table 12 and to enter
the right-hand cavity 12a. The spring 13 yields while the homing
portion 11 rides over the ridge 12c and thereupon expands to push
the table 12 upwardly so that the right-hand cavity 12a receives
and releasably retains the homing portion. In the next step, the
user relaxes or terminates the pressure in the direction of arrow A
whereby the spring 2 expands and pushes the locking element 8 into
the right-hand recess 9. The spring 13 also expands and thus
insures that the homing portion 11 remains in the right-hand
indexing cavity 12a. The ridge 12c cooperates with the spring 13 to
produce a distinct indexing action, i.e., the locking element 8 is
in accurate alignment with the right-hand recess 9 as soon as the
homing portion 11 snaps into the right-hand indexing cavity
12a.
The locking element 8 preferably constitutes the frustum of a cone
which tapers toward the swivel 4 so that it can readily find its
way into the registering recess 9 which is bounded by a conical
surface. The collar 8a at the lower end of the locking element 8
determines the extent to which the spring 2 can expand when the
axial pressure (arrow A) upon the control member 1 is
terminated.
The transfer of the locking element 8 from the central recess 9
into the right-hand recess 9 has caused the link coupling 10 to
change the position of the linkage 15. The linkage 15 preferably
comprises four output members each of which can actuate a switch,
rotate a cam, displace a lever or link or initiate another movement
and/or operation when the link coupling 10 has been moved in the
respective direction. As shown in FIG. 1, the element 15a of the
linkage 15 can close an electric switch 17 when the coupling 10 is
shifted in the direction indicated by arrow C. Another switch 18
can be closed by an element 15b of the linkage 15 when the coupling
10 is moved in the direction of arrow D, and two additional
switches can be closed when the coupling 10 is shifted at right
angles to the plane of FIG. 1, either toward or away from the
observer. The recesses 9 and the cavities 12a are preferably
located at the centers and four corners of two squares so that the
distance between the central recess 9 or cavity 12a and any one of
the four remaining recesses or cavities 9 is the same.
In moving from a first outer cavity 12a into an adjoining outer
cavity, the homing portion 11 may but need not move through the
neutral position of FIG. 1. Thus, each of the four "active"
settings can be selected indirectly by moving the control member 1
back to and thereupon from the illustrated neutral position or
directly by moving the control member to successive active
positions.
It is clear that the monocontrol mechanism of FIG. 1 is susceptible
of many further modifications. For example, the receptable 5 and/or
mounting fixture 6 can be made integral with the housing (mounting
plates 7, 7a), the receptacle 5 and the indexing table 12 can be
provided with two, three, four, six or more recesses 9 and cavities
12a, the homing portion 11 can be mounted on the shaft 12b (the
indexing table is then mounted on the shank 1b), and the linkage 15
can be omitted entirely or in part if the actuated or controlled
unit or units (e.g., the switch 17) are mounted sufficiently close
to the shank 1b to be actuated directly by the control member 1 in
the corresponding predetermined position of the homing portion
11.
The control member 1 can move axially or lengthwise (under or
against the action of the spring 2) in each of its five
predetermined positions. However, the control member 1 can pivot
only when it assumes the second axial position, i.e., when the
second portion 8 of the locking means is disengaged from the first
portion 5b.
The present invention can be embodied in a portable tape recorder,
e.g., for use by military forces under circumstances where the
entire apparatus is to be immersed in water. The housing must be
waterproof and the sealing elements 6a, 3 (or analogous sealing
means) insure that the lengthwise and/or pivotal movements of
control member 1 do not allow water or another fluid to penetrate
into the housing. If the illustrated monocontrol mechanism is
incorporated in a tape recorder, the neutral position of the
control member 1 may correspond to the "off" setting of the tape
recorder and the four additional predetermined positions of the
control member may respectively correspond to the "record,"
"playback," "fast forward" and "fast rewind" modes. The arrangement
may be such that the motor of the tape recorder is automatically
arrested during each transition from one mode to another. Thus, the
motor will always start on movement of the control member 1 to any
one of the four "active" positions, irrespective of the presence or
absence of tape. This is desirable in order to insure that the
motor can be operated irrespective of eventual tape break or the
opening of customary end-of-tape switch.
FIGS. 2 and 4 show a second embodiment of the monocontrol
mechanism. All such parts which are identical with or clearly
analogous to the corresponding parts of the first monocontrol
mechanism are denoted by similar reference characters plus 100. For
example, the parts 103, 106, 107 shown in FIG. 2 respectively
correspond to the seal 3, fixture 6 and mounting plate 7 of FIG. 1.
The top of the head 101a of the control member or lever 101 has a
knurled pattern, and this control member further comprises a shank
101b which is slidable in and turnable with the swivel 104 of a
universal joint further including the receptacle 105.
The indexing plate 12 is replaced with four indexing rollers 112
cooperating with a stud-shoped homing portion 111 of the shank
101b. The rollers 112 are mounted on the vertical legs of two
U-shaped springs 113 installed in a spring mount 114 so as to allow
the rollers 112 to yield when the homing portion 111 is moved
sideways in response to pivoting of the shank 101b. The springs 113
bias the rollers 112 toward each other (see FIG. 3) so that at
least one thereof must be deformed in order to move the homing
portion 111 between the neutral or central position (shown by solid
lines) and a selected one of the four additional predetermined
positions (indicated by broken lines). The spring or springs 113
will snap back as soon as the homing portion 111 reaches the
selected position. In fact, the springs 113 will assist the last
stage of movement of the homing portion 111 to a new predetermined
position by urging the adjacent pair of rollers 112 to move toward
each other as soon as the portion 111 has moved beyond the
narrowest part of the gap between such adjacent rollers.
The locking element 108 is a cup whose open side faces the inner
mounting plate 107a of the housing. The inner end portion 105b of
the receptacle 105 has four triangular projections 120 (see FIG. 4)
defining a cruciform passage for the shank 101b. The outer sides of
the projections 120 are of convex shape having their centers of
curvature on the axis of the shank 101b when the control member 101
dwells in its neutral position. The locking element 108 surrounds
the projections 120 in the illustrated neutral position to thus
hold the control member 101 against pivotal movement when the
control member is in undepressed position. When the user applies
finger pressure in the direction of arrow A, the locking element
108 is disengaged from the projections 120 and the shank 101b can
pivot with the swivel 104 to move the homing portion 111 to one of
the four broken-line predetermined positions shown in FIG. 3. If
the spring 102 is then allowed to expand, the locking element 108
moves upwardly to assume a position in which it conceals two
projections 120 but exposes portions of the other two projections.
From then on, the control member 101 cannot pivot but the operator
can apply finger pressure (arrow A) to disengage the locking
element 108 from the portion 105b of the receptacle 105.
The mode of operation of the monocontrol mechanism of FIGS. 2-4 is
analogous to that of the mechanism shown in FIG. 1. In order to
change the position of the homing portion 111, the user must move
the head 101a in the direction of arrow A to thus disengage the
locking element 108 from the inner end portion 105b of the
receptacle 105. In the next step, the control member 101 is caused
to pivot about an axis passing through the center of the swivel 104
and normal to the axis of the homing portion 111 to thereby shift
the linkage 115 which controls one or more switches, gears, link
trains or analogous controlled units in a manner as shown in and
described in connection with FIG. 1. The homing portion 111
directly engages the linkage 115 in the region between the locking
element 108 and the indexing rollers 112. Once the homing portion
111 reaches the selected predetermined position, the pressure upon
the head 101a is relaxed or terminated and the spring 108 into
engagement with the inner end portion 105b of the receptacle
105.
The bias of the springs 113 is adjustable or the springs 113 can be
replaced by softer or harder springs to thus change the resistance
which the homing portion 111 encounters in response to pivoting of
the control member 101.
The monocontrol mechanism of FIGS. 2-4 is also susceptible of many
additional modifications. Thus, the two U-shaped springs 113 can be
replaced by a single spring having four prongs, one for each of the
indexing rollers 112, or by four discrete springs, one for each
roller 112. Furthermore, the homing portion 111 may move between
two, three, four, six or more different predetermined positions,
depending on the number of mechanical, electrical or other
controlled units which are to be actuated or deactivated in
response to pivoting of the shank 101b. The locking element 108 and
the portion 105b of the receptacle 105 can be replaced by locking
means of the type shown in FIG. 1. or the indexing means 111-114 of
FIGS. 2-3 can be replaced with the indexing means 11-14 of FIG. 1.
The indexing means of FIGS. 2-3 is preferred at this time because
it is less expensive than the indexing means of FIG. 1.
An important advantage of the improved monocontrol mechanism is
that a single control member suffices to actuate any one of several
electrical, mechanical or other units in any desired sequence and
in such a way that a selected unit remains actuated or deactivated
without any danger of accidental changes in its status. Once the
control member is moved to a selected predetermined position, it is
held in such predetermined position by the indexing means including
the spring 13 or springs 113 as well as by the locking means
including the element 8 or 108. The lengthwise movement of control
member 1 or 101 in the direction of arrow A is necessary in order
to disengage the locking means 5b, 8 or 105b, 108 and the pivotal
movement of control member 1 or 101 about an axis defined by the
swivel 4 or 104 is necessary to index the homing portion to a
different predetermined position and to thereby displace one or
more parts of the linkage 15 or 115.
If desired, the spring or springs of the indexing means can be
designed and mounted in such a way that the movement of homing
portion 11 or 111 to a given predetermined position necessitates
the exertion of a smaller or greater effort than the movement to
other predetermined position or positions so that the user can
select a desired setting without locking at the head 1a or 101a
and/or without observing any deals, scales or analogous indicating
means on the housing, i.e., by the only expedient of taking into
consideration the magnitude of that force which is required to
index the homing portion to a selected predetermined position. The
number of active predetermined positions of the homing portion
depends on the number of units which are to be controlled by the
linkage 15 or 115 or analogous motion transmitting means and is
limited only by the desired dimensions of the housing which
receives the locking indexing and motion transmitting means.
It is further clear that the improved monocontrol mechanism can be
used to regulate the operation of a variety of machines, apparatus
and/or instruments. Thus, in addition to being useful in magnetic
tape recording and/or reproducing apparatus, the monocontrol
mechanism can be installed in photographic and copying apparatus,
radio and television receivers, control panels of machine tools
and/or others.
Without further analysis, the foregoing will so fully reveal the
gist of the present invention that others can, by applying current
knowledge, readily adapt it for various applications without
omitting features which fairly constitute essential characteristics
of the generic and specific aspects of my contribution to the art
and, therefore, such adaptations should and are intended to be
comprehended within the meaning and range of equivalence of the
claims.
* * * * *