US3924220A - Electric switch combined with variable resistor - Google Patents

Electric switch combined with variable resistor Download PDF

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Publication number
US3924220A
US3924220A US475597A US47559774A US3924220A US 3924220 A US3924220 A US 3924220A US 475597 A US475597 A US 475597A US 47559774 A US47559774 A US 47559774A US 3924220 A US3924220 A US 3924220A
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US
United States
Prior art keywords
switch
actuating member
movable contact
contact holder
variable resistor
Prior art date
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
Application number
US475597A
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English (en)
Inventor
Hiroshi Matsui
Hisao Kitahara
Shozo Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of US3924220A publication Critical patent/US3924220A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
    • H01C10/36—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path structurally combined with switching arrangements
    • H01C10/363—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path structurally combined with switching arrangements by axial movement of the spindle, e.g. pull-push switch

Definitions

  • the Swhch housing are disphed a movable 10mm 338/198 holder and a movable-contact-holder actuating mem- 511 int. c1.
  • 1101c 9/08 her which are Pemhve
  • the present invention relates generally to a switch combined with a variable resistor and more particularly to a switch combined with a variable resistor of the type in which a switch assembly is attached to the rear of the variable resistor in such a way that the switch may be opened or closed by the operating shaft of the variable resistor.
  • One of the objects of the present invention is therefore to provide an improved switch combined with a variable resistor which may substantially eliminate such problems and defects as encountered in the above mentioned switches combined with a variable resistor.
  • Another object of the present invention is to provide an improvedswitch combined with a variable resistor in which the switch may be opened or closed by a common operating shaft at any angular position thereof, and the satisfactory switching action may be insured by a U-shaped spring.
  • a further object of the present invention is to provide a switch combined with a variable resistor which is simple in construction and assembly and inexpensive to manufacture and is best adapted for use in multiple circuits of various communication equipments, in particular, television receivers.
  • a common operating shaft is used for operating both a switch and a variable resistor.
  • the operating shaft extends into a switch housing attached to the rear of the variable resistor cover so that the switch may be opened or closed as the operating shaft is pushed or pulled.
  • a movable contact holder and a movable-contact-holder actuating member which are operatively coupled to each other by a spring in such a way that when the actuating member is shifted by the operating shaft from one position to the other, the movable contact holder is shifted in the opposite direction under the force of the spring so as to bridge a selected pair of fixed contacts of the switch.
  • the movable contact attached to the movable contact holder is made up of a metallic sheet doubled back upon itself so that the doubled back portions may slidably sandwich the fixed contacts therebetween, thereby insuring the satisfactory electrical contact between the movable and fixed contacts.
  • the operating shaft is fitted into a center hole of a wiper holder of the variable resistor in such a way that upon rotation of the operating shaft, the wiper holder may rotate in unison with the operating shaft, but when the operating shaft is pushed or pulled, it may slide axially through the center hole of the wiper holder so as to hold the latter stationary. Therefore, the operation of the variable resistor, i.e., the rotation of the operating shaft may be carried out independently of the operation of the switch, and-vice versa.
  • a plurality of switch contacts may be provided, and a plurality of variable resistors may be ganged. Therefore, a multi-contact switch combined with a ganged variable resistor may be provided which may find a wide application in various fields.
  • FIG. 1 is a sectional view of one preferred embodiment of the present invention with an operating shaft being in the pushed-in or upper position;
  • FIG. 2 is a left side view of a movable-contact-holderactuating member (15) of a switch;
  • FIG. 3 is a right side view thereof.
  • FIG.4 is a perspective view illustrating the operative coupling between the actuating member (15) and a movable contact holder (16) by a spring (17).
  • a mount 1 and a shield plate 2 are fitted over a bearing 3 rotatably supporting an operating shaft 5.
  • a horseshoe-shaped resistor member 4 is mounted upon the mount I and has its both ends 'mechanically and electrically connected coupled to outer or end terminals (not shown).
  • the operating shaft 5 is both rotatable and slidable in the bearing 3 for adjusting the resistance of a variable resistor and opening and closing a switch as will be described in more detail hereinafter.
  • the operating shaft 5 extends through an opening 7 formed'at the center of the top of a capshaped cover 6 for the variable resistor which is attached to the mount 1 by bending ears (not shown) of the cap-shaped cover 6 after they are inserted into mating holes (not shown) of the mount 1.
  • a wiper holder 8 is fitted over the operating shaft 5 within a space defined by the mount 1 and the cap-shaped cover 6 so that it may rotate in unison with the operating shaft.
  • a wiper or brush 9 is attached to the undersurface of the wiper holder 8 and is brought into sliding contact with the resistor member 4.
  • the wiper 9 is electrically coupled to a center terminal 11 attached to the mount 1 through a slip ring 22 attached to the wiper 9 and a contactor 10 which is normally electrically coupled to the wiper 9.
  • a housing 12 for the switch having its one side and its bottom opened is attached to the top of the capshaped cover 6.
  • the upper end of the operating shaft 5 is located within the housing 12.
  • a switch terminal mount 13 attached to one side of the housing 12 has switch terminals or fixed contacts 14a, 14b and 14c.
  • a movable contact-holder actuating member 15 and a movable contact holder 16 are disposed within the housing 12 in transversely spaced apartrelation.
  • a U-shaped spring 17 is loaded between a spring stop 18 attached to the actuating member 15 and a spring stopv 19 attached to the movable contact holder 16 so that the actuating member 15 and the movable contact holder 16 are forced to move away from each other to be pressed against the inner wall of the housing and the terminal mount 13, respectively.
  • the actuating member 15 has an engaging member 20 formed at the lower end thereof for engagement with the upper end A of the operating shaft 5 so that when the operating shaft 5 is pushed or pulled, the actuating member is pushed upwardly or pulled downwardly within the housing 12.
  • a movable contact 21 attached to one side of the movable contact holder 16 is adapted to bridge between the terminals 14a and 14b or 14b and 14c as the movable contact holder 16 is pulled downwardly or pushed upwardly.
  • the movable contact 21 comprises an elastic metal sheet doubled back upon itself so as to sandwich the terminals or fixed contacts 14a 14c therebetween, thereby insuring satisfactory electrical contact between the movable contact and the fixed contact.
  • FIG. 1 shows the operating shaft 5 in its pushed-in position.
  • the movable-contact-holder actuating member 15 is in the upper or pushed-in position while the movable contact holder 16 is brought to the lower position under the force of the spring 17.
  • the movable contact 21 bridges between the terminals or fixed contacts 14a and 14b.
  • the actuating member 15 is forced to the lower or pulled out position while the movable contact holder 16 is shifted to the upper position under the force of the spring 17 so that the movable contact 21 bridges the terminals or fixed contacts 14b and 14c while opening the fixed contacts 14a and 14b.
  • the wiper holder 8 Upon rotation of the operating shaft 5, the wiper holder 8 is rotated so that the wiper 9 slides over the resistor member 4. Therefore, the resistances between the outer or. end terminals (not shown) and the center terminal may be suitably adjusted.
  • its upper end 5A When the operating shaft 5 is rotated, its upper end 5A also rotates in sliding contact with the engaging member of the actuating member 15 so that the mode of the switch remains unchanged.
  • variable resistor mounted in said base and provided with a wiper arm rotatably coupled to the shaft and fixed in the axial direction
  • a switch cover housing fixed to the base and being provided with at least two internal walls substantially parallel to the shaft axis, one of the two parallel walls of the switch cover housing being provided with stationary switch contacts, e.a dielectric movable contact holder provided with switch contacts and slideably arranged in the switch cover housing abutting said one of said two parallel walls for motion in a direction parallel to said one of said walls, a switch actuating member slideably arranged in said switch cover housing abutting another of said two parallel walls for motion in a direction parallel to said other of said two parallel walls, an end of the operating shaft being rotatably coupled to said switch actuating member and translationally fixed to the switch actuating member for moving said switch actuating member in said switch covered housing in a direction parallel to the operating'shaft axis, and spring means interconnecting said movable contact holder and said switch actuating member for biasing said movable contact holder in a direction opposite to the direction of said axial motion of the shaft and actuating member and for biasing said said

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
  • Slide Switches (AREA)
US475597A 1973-06-13 1974-06-03 Electric switch combined with variable resistor Expired - Lifetime US3924220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973070473U JPS5018976U (ko) 1973-06-13 1973-06-13

Publications (1)

Publication Number Publication Date
US3924220A true US3924220A (en) 1975-12-02

Family

ID=13432518

Family Applications (1)

Application Number Title Priority Date Filing Date
US475597A Expired - Lifetime US3924220A (en) 1973-06-13 1974-06-03 Electric switch combined with variable resistor

Country Status (3)

Country Link
US (1) US3924220A (ko)
JP (1) JPS5018976U (ko)
CA (1) CA993070A (ko)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015096A (en) * 1974-08-31 1977-03-29 Motorola, Inc. Change-over switch mechanism for push-button tuner
US4225846A (en) * 1979-02-01 1980-09-30 Emhart Industries, Inc. Shaft locking mechanism having combination switch and variable resistor
US4297671A (en) * 1980-06-11 1981-10-27 Cts Corporation Tandem insert molded electrical controls and process for producing same
US4363018A (en) * 1980-11-03 1982-12-07 Matsushita Electric Industrial Co., Ltd. Electronic components of rotary type
US4453152A (en) * 1983-01-10 1984-06-05 The Singer Company Sewing machine control
EP0305213A2 (en) * 1987-08-28 1989-03-01 Wilbrecht Electronics Inc. Hearing aid comprising a push-pull control switch
US5084692A (en) * 1989-11-06 1992-01-28 Motorola, Inc. Rotary assembly combined with an electrical switch
US5546067A (en) * 1994-12-14 1996-08-13 United Technologies Automotive, Inc. Rotary potentiometer assembly for a push-pull switch
US5824979A (en) * 1997-06-18 1998-10-20 Illinois Tool Works Inc. Accelerator module
US6184776B1 (en) 1999-03-16 2001-02-06 Illinois Tool Works Inc. Accelerator module for electric vehicle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56160852A (en) * 1980-05-13 1981-12-10 Toshiba Corp Production of metallic mold
JPH0818121B2 (ja) * 1988-01-19 1996-02-28 トヨタ自動車株式会社 鋳造装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881280A (en) * 1958-02-14 1959-04-07 Chicago Telephone Supply Corp Electric snap switch
US3023388A (en) * 1960-09-22 1962-02-27 Cts Corp Composite electrical control device for radio receivers
US3236971A (en) * 1963-02-28 1966-02-22 Zenith Radio Corp Combination on-off switch and circuit-breaker
US3350522A (en) * 1966-09-02 1967-10-31 Stackpole Carbon Co Push-pull electric switch
US3413431A (en) * 1967-06-29 1968-11-26 Stackpole Carbon Co Snap action slide switch
US3602868A (en) * 1970-05-11 1971-08-31 Mallory & Co Inc P R Combination resistor and switching controls
US3641292A (en) * 1970-11-27 1972-02-08 Matsushita Electric Ind Co Ltd Pull-push-type switch
US3643199A (en) * 1970-08-14 1972-02-15 Matsushita Electric Ind Co Ltd Pull-push switch with a variable resistor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS404185Y1 (ko) * 1964-04-11 1965-02-05

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881280A (en) * 1958-02-14 1959-04-07 Chicago Telephone Supply Corp Electric snap switch
US3023388A (en) * 1960-09-22 1962-02-27 Cts Corp Composite electrical control device for radio receivers
US3236971A (en) * 1963-02-28 1966-02-22 Zenith Radio Corp Combination on-off switch and circuit-breaker
US3350522A (en) * 1966-09-02 1967-10-31 Stackpole Carbon Co Push-pull electric switch
US3413431A (en) * 1967-06-29 1968-11-26 Stackpole Carbon Co Snap action slide switch
US3602868A (en) * 1970-05-11 1971-08-31 Mallory & Co Inc P R Combination resistor and switching controls
US3643199A (en) * 1970-08-14 1972-02-15 Matsushita Electric Ind Co Ltd Pull-push switch with a variable resistor
US3641292A (en) * 1970-11-27 1972-02-08 Matsushita Electric Ind Co Ltd Pull-push-type switch

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015096A (en) * 1974-08-31 1977-03-29 Motorola, Inc. Change-over switch mechanism for push-button tuner
US4225846A (en) * 1979-02-01 1980-09-30 Emhart Industries, Inc. Shaft locking mechanism having combination switch and variable resistor
US4297671A (en) * 1980-06-11 1981-10-27 Cts Corporation Tandem insert molded electrical controls and process for producing same
US4363018A (en) * 1980-11-03 1982-12-07 Matsushita Electric Industrial Co., Ltd. Electronic components of rotary type
US4453152A (en) * 1983-01-10 1984-06-05 The Singer Company Sewing machine control
EP0305213A2 (en) * 1987-08-28 1989-03-01 Wilbrecht Electronics Inc. Hearing aid comprising a push-pull control switch
EP0305213A3 (en) * 1987-08-28 1990-12-05 Wilbrecht Electronics Inc. Push-pull control switch for hearing aids
US5084692A (en) * 1989-11-06 1992-01-28 Motorola, Inc. Rotary assembly combined with an electrical switch
US5546067A (en) * 1994-12-14 1996-08-13 United Technologies Automotive, Inc. Rotary potentiometer assembly for a push-pull switch
US5824979A (en) * 1997-06-18 1998-10-20 Illinois Tool Works Inc. Accelerator module
US6184776B1 (en) 1999-03-16 2001-02-06 Illinois Tool Works Inc. Accelerator module for electric vehicle

Also Published As

Publication number Publication date
CA993070A (en) 1976-07-13
JPS5018976U (ko) 1975-03-03

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