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US3870986A - Device for simultaneously controlling a plurality of variable resistors - Google Patents

Device for simultaneously controlling a plurality of variable resistors Download PDF

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Publication number
US3870986A
US3870986A US31658672A US3870986A US 3870986 A US3870986 A US 3870986A US 31658672 A US31658672 A US 31658672A US 3870986 A US3870986 A US 3870986A
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Prior art keywords
bearing
members
member
pair
ball
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
Shunzo Oka
Matsuo Nishioka
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Panasonic Corp
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Panasonic Corp
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05GCONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05GCONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G2009/04703Mounting of controlling member
    • G05G2009/04707Mounting of controlling member with ball joint
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05GCONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G2009/0474Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks characterised by means converting mechanical movement into electric signals
    • G05G2009/04748Position sensor for rotary movement, e.g. potentiometer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/32Articulated members
    • Y10T403/32606Pivoted
    • Y10T403/32631Universal ball and socket
    • Y10T403/32811Spring-biased
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/20Control lever and linkage systems
    • Y10T74/20012Multiple controlled elements
    • Y10T74/20201Control moves in two planes

Abstract

A device for simultaneously controlling a plurality of variable resistors, in which a pair of bearing members each having a bearing surface consisting of a part of a spherical surface are fixed to the top of an opened bottom casing made of an electrically conductive material and having four side walls, in coaxial relation with a center hole formed through the top. A ball member having an operating shaft extending through the center thereof is rotatably supported by the pair of bearing members so that when the operating shaft is rotated, a plurality of variable resistors mounted on the side walls respectively may be simultaneously controlled. The pair of bearing members as well as the ball member are made of an electrically conductive material, and an elastic member is interposed between the pair of bearing members or in one of them so as to bias the ball member toward one of the pair of bearing members.

Description

United States Patent 1 Oka et al.

[ 1 Mar. 11, 1975 [22] Filed: Dec. 19, 1972 [21] App]. No.: 316,586

[30] Foreign Application Priority Data Dec. 24, 1971 Japan 47-56[U] var-Q1422," m 2 w 1 [52] US. Cl 1. 338/128, 200/6 A, 74/471 XY, 308/72, 403/144 [51] Int. Cl 1101c 5/00, G05g 9/02 [58] Field of Search 74/471 XY, 471; 308/72; 200/6 A; 338/128; 403/131, 144

[56] References Cited UNITED STATES PATENTS 9/1956 Dodd 74/471 XY 3/1967 Jonsson 74/471 XY 6/1967 Nowselski et al 308/72 3,483,888 12/1969 Wurzel 308/72 X 3,585,319 6/1971 Payerle 74/471 XY FOREIGN PATENTS OR APPLICATIONS 1,027,470 4/1958 Germany 308/72 Primary Examiner-Allan D. Hermann [57] ABSTRACT A device for simultaneously controlling a plurality of variable resistors, in which a pair of bearing members each having a bearing surface consisting of a part of a spherical surface are fixed to the top of an opened bottom casing made of an electrically conductive material and having four side walls, in coaxial relation with a center hole formed through the top. A ball member having an operating shaft extending through the center thereof is rotatably supported by the pair of bearing members so that when the operating shaft is rotated, a plurality of variable resistors mounted on the side walls respectively may be simultaneously controlled. The pair of bearing members as well as the ball member are made of an electrically conductive material, and an elastic member is interposed between the pair of bearing members or in one of them so as to bias the ball member toward one of the pair of bearing members,

2 Claims, 6 Drawing Figures m gu/m 1197s 3,870,986

SHEET 2 OF 2 FIG. 4

DEVICE FOR SIMULTANEOUSLY CONTROLLING A PLURALITY OF VARIABLE RESISTORS BACKGROUND OF THE INVENTION The present invention relates to a device for simultaneously controlling a plurality of variable resistors. The control device in accordance with the present invention may be used, for example, in a stereophonic sound reproduction system in which more than two volume controls must be adjusted simultaneously.

There has been proposed a device for controlling simultaneously a pluality of variable resistors of the type in which a pair of bearing members which defines a bearing surface consisting of a part of a spherical surface are fixed to the top of an electrically conductive casing having four side walls, in coaxial relation with a center hole formed through the top, and a ball member having an operating shaft extending through the center thereof is rotatably supported by the pair of bearing members so that four variable resistors mounted on the side walls may be simultaneously controlled by rotating the operating shaft. However the undesirable clearance between the ball member and the bearing members is objectionable in that the control of variable resistors cannot be effected with a higher degree of accuracy. Furthermore, when the bearing members and the ball member are made of a non-conductive material, the noise or hum is induced in the sound reproduction systems or the like.

SUMMARY OF THE INVENTION One of the objects of the present invention is therefore to eliminate the clearance between the ball member and the bearing members in the device for simultaneously controlling a plurality of variable resistors of the type described above.

Another object of the present invention is to prevent the introduction of noise or hum when the variable resistors are controlled.

In order to attain the above objects of the present invention, resilient means is disposed within the bearing members so as to bias the ball member toward one of the bearing members, and the bearing members as well as the ball member are made of an electrically conductive material.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a front view of a first embodiment of the present invention;

FIG. 2 is a bottom view thereof;

FIG. 3 is a partially cross sectional view, on enlarged scale, of a portion thereof;

FIG. 4 is a perspective exploded view thereof;

FIG. 5 is a partially cross sectional view of a second embodiment of the present invention; and

FIG. 6 is a perspective view illustrating one of the bearing members thereof.

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment, FIGS. l-4

A square casing l which is made of an electrically conductive material has an open bottom. Molded bearings 3 and 4 each having a bearing surface which is a part of a spherical surface are securely fixed with rivets 5 to the top of the casing l coaxially of a hole 2 formed through the top as best shown in FIG. 4. A ball member 8 which is made of an electrically conductive material and has an operating shaft 7 fitted into a through hole 6 formed through the center of the ball member 8 which is rotatably supported by the pair of bearings 3 and 4. A ring-shaped leaf spring 9 which is made of a conductive material and has a plurality of projections 10 radially inwardly extending from the inner periphery thereof is interposed between the pair of bearings 3 and 4 in such a manner that the projections 10 contact thc ball member 8 so as to bias it in one direction. In the instant embodiment, the ball member 8 is biased toward the bearing 3 under the force of the leaf spring 9.

.The wall 11 of the lower bearing 4 serves to limit the angle of rotation of the operating shaft 7.

Variable resistors 12-15 are securely fixed to the four side walls of the casing 1, respectively in such a manner that their shafts 24-27 extend through the side walls into the casing 1. In this embodiment, in order to mount the variable resistors 12-15 on the casing 1, projections or ears 20-23 struck out of the ends of shielding bottoms 16-19 of the variable resistors 12-15 are inserted through engaging holes (not shown) formed in the side walls of the casing l and then bent as best shown in FIG. 2. The variable resistors 12-15 may be of the conventional type. Each of a pair of bow-shaped connecting members 28 and 29 which may be made of an elastic material, has projections 28a and 29a (the projection 29a being not shown) which are struck out from the ends of the bow-shaped connecting member and engage with notches 24a27a formed at the ends of the shafts 24-27 of the variable resistors 12-15. (The notches 25a and 27a are not shown in the figures.) Thus the opposing shafts 24 and 26; and 25 and 27 are interconnected through the bow-shaped connecting members 28 and 29, respectively which cross each other as best shown in FIG. 2. The leading end 32 of the operating shaft 7 is fitted into longitudinal elongated slots 30 and 31 formed in the connecting members 28 and 29.

Next, the mode of operation will be described. Since the ball-member 8 is rotatably supported by the upper and lower bearings 3 and 4, the operating shaft 7 extending from the ball member 8 may be rotated or shifted in any direction. The end 32 of the operating shaft 7 is slidably fitted into the elongated slots 30 and 31 of the connecting members 28 and 29 so that when the operating shaft 7 is rotated, its lower end 32 causes the bow-shaped connecting members 28 and 29 to rotate about the axes of the shafts 24 and 26; and 25 and 27. As a result, the rotation of the bow-shaped connecting members 28 and 29 are transmitted to the shafts 24-27 of the variable resistors 12-15. Therefore, when the operating shaft 7 is rotated, the resistances of the variable resistors 12-15 may be simultaneously varied.

When it is desired to adjust only a pair of opposed variable resistors 12 and 14 or 13 and 15, one may shift the operating shaft 7 in the direction in which the other pair of variable resistors 13 and 15 or 12 and 14 which are not to be adjusted are disposed, that is, in a plane which contains the axis of the shafts 17 and 19 or 16 and 18 and is perpendicular to the axis of the shafts l6 and 18 or 17 and 19. In this case, the end of the operating shaft 7 slides in the elongated slot 31 or 30 without causing the connecting member 29 or 28 to rotate, but causes the connecting member 28 or 29 to rotate. Thus only one pair of opposed variable resistors 12 and 14 or 13 and 15 may be adjusted.

Since the leaf spring 9 interposed between the upper and lower bearings 3 and 4 serves to bias the ball member 8 in one direction as explained above, undesired play of the ball member 8 may be taken up. Furthermore the ball member 8 which is made of an electrically conductive material is electrically connected to the casing 1 through the eondustive leaf spring 9, and the rivets 5 that the noise may be prevented from being induced when the operating shaft 7 is actuated. Second Embodiment, FIG. 5 and FIG. 6

The second embodiment shown in FIGS. 5 and 6 is substantially similar to the first embodiment described above except that a plurality of resilient projections 9a are formed integral with the wall 10 of the lower bearing 4, thus the leaf spring 9 used in the first embodiment is eliminated.

In the second embodiment, the plurality of resilient projections 9a may be formed simultaneously when the bearing 4 is molded. Therefore the number of parts may be reduced and the assembly may be much facilitated,- so that the second embodiment is more economical than the first embodiment.

What is claimed is:

1. In a device for simultaneously controlling a plurality of variable resistors of the type in which a pair of molded bearing members each having a bearing surface which is a part of a spherical surface are securely fixed to the top of an electrically conductive casing having four side walls in coaxial relation with a center hole formed in the top of said casing;

a ball member having an operating shaft extending through the center thereof is rotatably supported by said pair of bearing members; variable resistors are fixed on the side walls of said casing in such a manner that their shafts extend through each side wall into said casing; and the end of said operating shaft is slidably fitted into elongated slots formed in bow-shaped elastic connecting members each connecting the opposed shafts of said variable resistors,

a member having a plurality of elastic projections interposed between said ball member and said pair of bearing members so as to contact said ball member and to bias it toward one of said pair of bearing members, and

said pair of bearing members and said ball member being of an electrically conductive material electrically connected to the casing.

2. A device as defined in claim 1 wherein said member is made of an electrically conductive material and is interposed between said pair of bearing members so as to bias said ball member toward one of said pair of bearing members.

Claims (2)

1. In a device for simultaneously controlling a plurality of variable resistors of the type in which a pair of molded bearing members each having a bearing surface which is a part of a spherical surface are securely fixed to the top of an electrically conductive casing having four side walls in coaxial relation with a center hole formed in the top of said casing; a ball member having an operating shaft extending through the center thereof is rotatably supported by said pair of bearing members; variable resistors are fixed on the side walls of said casing in such a manner that their shafts extend through each side wall into said casing; and the end of said operating shaft is slidably fitted into elongated slots formed in bow-shaped elastic connecting members each connecting the opposed shafts of said variable resistors, a member having a plurality of elastic projections interposed between said ball member and said pair of bearing members so as to contact said ball member and to bias it toward one of said pair of bearing members, and said pair of bearing members and said ball member being of an electrically conductive material electrically connected to the casing.
1. In a device for simultaneously controlling a plurality of variable resistors of the type in which a pair of molded bearing members each having a bearing surface which is a part of a spherical surface are securely fixed to the top of an electrically conductive casing having four side walls in coaxial relation with a center hole formed in the top of said casing; a ball member having an operating shaft extending through the center thereof is rotatably supported by said pair of bearing members; variable resistors are fixed on the side walls of said casing in such a manner that their shafts extend through each side wall into said casing; and the end of said operating shaft is slidably fitted into elongated slots formed in bow-shaped elastic connecting members each connecting the opposed shafts of said variable resistors, a member having a plurality of elastic projections interposed between said ball member and said pair of bearing members so as to contact said ball member and to bias it toward one of said pair of bearing members, and said pair of bearing members and said ball member being of an electrically conductive material electrically connected to the casing.
US3870986A 1971-12-24 1972-12-19 Device for simultaneously controlling a plurality of variable resistors Expired - Lifetime US3870986A (en)

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JP5672 1971-12-24
JP3267372U JPS522031Y2 (en) 1972-03-17 1972-03-17

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976023A (en) * 1975-01-29 1976-08-24 Niigata Engineering Co., Ltd. Apparatus for maneuvering a ship
US4076344A (en) * 1976-05-07 1978-02-28 Gulf & Western Manufacturing Company Bearing assembly for a ball and socket joint
US4101863A (en) * 1976-04-08 1978-07-18 S.L.M. (Model) Engineers Limited Angular movement resolvers
US4127841A (en) * 1976-07-30 1978-11-28 Toshiba Kikai Kabushiki Kaisha Multi-direction controlling mechanism
US4442730A (en) * 1981-08-31 1984-04-17 Twin Disc, Incorporated Vehicle transmission system and a single lever control device therefor
US4559420A (en) * 1983-10-14 1985-12-17 Alps Electric Co., Ltd. Omnidirectional changeover switch
US4587510A (en) * 1983-10-19 1986-05-06 Wico Corporation Analog joystick controller
US20030123808A1 (en) * 2001-12-31 2003-07-03 Texas Instruments Inc. Tilt-in-place alignment system and method
US20090255353A1 (en) * 2008-04-15 2009-10-15 Shinji Ishikawa Multi-directional input apparatus
US20110063139A1 (en) * 2009-09-15 2011-03-17 Joy Mm Delaware, Inc. explosion proof electro-mechanical joystick

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2762234A (en) * 1952-09-08 1956-09-11 Dodd Roy Frank Search-track radar control
US3308675A (en) * 1963-12-20 1967-03-14 Bofors Ab Control device
US3328095A (en) * 1965-07-02 1967-06-27 Ibm Axially adjustable bearing support
US3483888A (en) * 1967-12-15 1969-12-16 Waldes Kohinoor Inc Self-locking retaining rings and assemblies employing same
US3585319A (en) * 1969-08-05 1971-06-15 North American Rockwell Single lever control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2762234A (en) * 1952-09-08 1956-09-11 Dodd Roy Frank Search-track radar control
US3308675A (en) * 1963-12-20 1967-03-14 Bofors Ab Control device
US3328095A (en) * 1965-07-02 1967-06-27 Ibm Axially adjustable bearing support
US3483888A (en) * 1967-12-15 1969-12-16 Waldes Kohinoor Inc Self-locking retaining rings and assemblies employing same
US3585319A (en) * 1969-08-05 1971-06-15 North American Rockwell Single lever control

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976023A (en) * 1975-01-29 1976-08-24 Niigata Engineering Co., Ltd. Apparatus for maneuvering a ship
US4101863A (en) * 1976-04-08 1978-07-18 S.L.M. (Model) Engineers Limited Angular movement resolvers
US4076344A (en) * 1976-05-07 1978-02-28 Gulf & Western Manufacturing Company Bearing assembly for a ball and socket joint
US4127841A (en) * 1976-07-30 1978-11-28 Toshiba Kikai Kabushiki Kaisha Multi-direction controlling mechanism
US4442730A (en) * 1981-08-31 1984-04-17 Twin Disc, Incorporated Vehicle transmission system and a single lever control device therefor
US4559420A (en) * 1983-10-14 1985-12-17 Alps Electric Co., Ltd. Omnidirectional changeover switch
US4587510A (en) * 1983-10-19 1986-05-06 Wico Corporation Analog joystick controller
US20030123808A1 (en) * 2001-12-31 2003-07-03 Texas Instruments Inc. Tilt-in-place alignment system and method
US6905259B2 (en) * 2001-12-31 2005-06-14 Texas Instruments Incorporated Tilt-in-place alignment system and method
US20090255353A1 (en) * 2008-04-15 2009-10-15 Shinji Ishikawa Multi-directional input apparatus
US8230755B2 (en) * 2008-04-15 2012-07-31 Alps Electric Co., Ltd. Multi-directional input apparatus
US20110063139A1 (en) * 2009-09-15 2011-03-17 Joy Mm Delaware, Inc. explosion proof electro-mechanical joystick
US8400342B2 (en) 2009-09-15 2013-03-19 Joy Mm Delaware, Inc. Explosion proof electro-mechanical joystick

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CA949663A (en) 1974-06-18 grant
CA949663A1 (en) grant

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