US3413430A - Electric rocker switches - Google Patents

Electric rocker switches Download PDF

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Publication number
US3413430A
US3413430A US61365567A US3413430A US 3413430 A US3413430 A US 3413430A US 61365567 A US61365567 A US 61365567A US 3413430 A US3413430 A US 3413430A
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US
United States
Prior art keywords
switch
member
cam member
body
cam
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
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Inventor
Sharples Richard Colin
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.)
Lucas Industries Ltd
Original Assignee
Lucas Industries 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
Priority to GB707666A priority Critical patent/GB1166865A/en
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3413430A publication Critical patent/US3413430A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02Details
    • H01H23/12Movable parts; Contacts mounted thereon
    • H01H23/16Driving mechanisms
    • H01H23/168Driving mechanisms using cams

Description

Nov. 26, 1968 Filed Feb. 2, 1967 United States Patent ABSTRACT OF THE DISCLOSURE A rocker switch having contacts operated in response to movement of the operating member of the switch, through a cam member detachably supported in the body of the switch.

This invention relates to electric switches.

An electric switch according to the invention comprises in combination a body carrying contacts, a detachable cam member engaged with the body for operating the contacts, an operating member, and resilient means extending between the operating member and cam memher, the operating member acting through the resilient means to contact the cam member.

A three-position electric switch constructed in accordance with one example of the invention is illustrated in the accompanying drawings wherein FIGURE 1 is a part sectional side view of the switch, FIGURE 2 is a sectional view on the line 2-2 in FIGURE 1, FIGURE 3 is a view of an inside wall of the body of the switch, FIGURE 4 is an enlarged side view of a cam member forming part of the switch and FIGURE 5 is a sectional view of the cam member shown in FIGURE 4.

Referring first to FIGURES 1 and 2 there is provided a switch having a body 11 and an operating member 12 pivotally engaged therewith, both the body and the operating member being moulded in a synthetic resin material. V

The body '11 is of open box like construction including side walls'13, end walls 14a, 14b, of unequal length, a base 15, and mounting lugs a, 10b, integral with the walls 14a, 14b, respectively. The base 15 comprises three integral portions, a first portion 15a, which extends at right angles to the two walls 14a, a second portion 15b, parallel with but spaced from the portion 15a, and a sloping portion 150, joining the portions 15a, 15b.

Extending within the body 11 parallel to the walls 13 are a pair of spring contacts 16, 17 secured at one end to the base portion 15a, by rivets which also serve to secure external terminal blades 19, 21 to the body 11, the rivets connecting the blades to the contacts electrically. The contacts 16, 17 are movable into engagement with a pair of contact pieces 24, 25 on the base portion 15b. The contact pieces 24, 25 are connected by way of conductive rivets to external terminal blades 27, 28 respectively.

The walls 13 are moulded with upwardly extending portions 29 formed with holes 31 for pivotally supporting the operating member 12. Formed on the inner surface of each of the walls 13 is a vertically extending channel 32 which narrows towards its lower end and terminates in a pair of a spaced semicircular depressions 32a.

A cam member 33 (FIGURES 4 and 5) is supported in the channels 32 by means of integral lugs 34 (FIG- URES 2 and 4). The lugs 34 are of width substantially equal to that of the lower ends of channels 32 and are each formed with a pair of downwardly extending semicircular projections 35, 36 which are arranged to engage with the corresponding semicircular depressions at the 3,413,430 Patented Nov. 26, 1968 ice lower end of the channels 32. The cam member 33 can pivot about either the projections 35 or the projections 36.

The lower face of the member 33 is shaped to form a pair of cam profiles 38, 39 which can engage the contacts 16, 17 respectively to cause them to engage contact pieces 24, 25 respectively.

In the upper face of the member 33 is a groove the ends of which are defined by a lower pair of sloping walls 44 meeting in a line which lies in a plane bisecting the lugs 34, an intermediate pair of walls 43 which slope less steeply than the walls 44, and an upper pair of vertical walls 42.

The operating member 12 (FIGURES l and 2) is formed integrally with short posts 54 which are received in the holes 31 in the body .portions 29 thus supporting the member 12 for pivotal' movement on the body 11. A tubular finger 52 extends integrally from the member 12 into the groove 41 in the cam member 33, and within the bore in the finger 52 is a compression spring 55 which urges a ball 56 into contact with the walls of the groove 41.

The switch is used to control two circuits one of which includes the contact 16 and its associated terminal blades 19, 27 and the other of which includes the contact 17 and its associated terminal blades 21, 28. Each circuit is opened or closed by movement of its respective spring contact in response to movements of the cam member 33, the cam profiles 38, 39 being so arranged that when the switch is in its off position both the circuits are open, when the switch is in its first operative position shown in FIGURES l and 2 the circuit through contact 16 is closed and the circuit through contact 17 is open and when the switch is in its second operative position both circuits are closed. I

In the first operative position shown the projections 35, 36 are engaged in their corresponding depressions at the lower ends of the channels 32, and the ball 56 is engaged with both surfaces 44 to maintain the switch in position.

To move the switch to its off position the operating member 12 is pivoted in afcounter clockwise direction about the posts 54, until its lower left hand edge engages with the lug 10b. This movement causes the ball 56 to ride up one of the surfaces 44 and on to the adjacent surface 43 of the groove 41. Due to the action of the spring 55 on the ball 56 as it engages the surface 43, the cam member 33 is caused to pivot in a clockwise direction about the projections 36, thus lifting the cam profile 38 clear of the contact 16, which allows the contact 16 to open its circuit. The ball 56 slides along the surface 43 until it comes into contact with the adjacent surface 42. The ball is now urged against surface 43 and surface 42 and in this position there is no tendency for the cam member 33 to pivot. Thus the switch is maintained in its off position with both circuits open.

The operation when the switch is moved from the first to the second operative position is similar to that described above, except that pivoting takes place about the projections 35, and the cam profiles 38, 39 close both circuits.

The cam profiles 38, 39 and the configuration of the groove 41 can be altered to provide any desired sequence of operation of the switch, so that a wide range of switches can be manufactured using similar mouldings.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. An electric rocker switch comprising in combination a body having at least two movable contacts attached thereto, a detachable cam member engageable with the contacts for selective operation thereof, an operating member, resilient means extending between said operating member and said cam member so that said operating member coacts with said resilient means and cam member to make and break at least one circuit.

2. An electric switch as claimed in claim 1 wherein said body, said detachable cam member and said operating member are each molded of synthetic resin.

3. An electric switch as claimed in claim 1 wherein said body carries contacts associated with two electrical circuits, said cam member being so shaped as to be able to make both circuits in a predetermined sequence so they are both energized.

4. An electric switch as claimed in claim 1 wherein said resilient means comprises a hollow finger integral with said operating member, and housing a ball, said ball being spring urged into engagement with said cam member.

4 5. An electric switch as claimed in claim 1 wherein said cam member has two operative cam profiles successively engageable With said two contacts.

References Cited ROBERT K. SCHAEFER, Primary Examiner.

H. BURKS, Assistant Examiner.

US61365567 1966-02-17 1967-02-02 Electric rocker switches Expired - Lifetime US3413430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB707666A GB1166865A (en) 1966-02-17 1966-02-17 Electric Switches

Publications (1)

Publication Number Publication Date
US3413430A true US3413430A (en) 1968-11-26

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ID=9826162

Family Applications (1)

Application Number Title Priority Date Filing Date
US61365567 Expired - Lifetime US3413430A (en) 1966-02-17 1967-02-02 Electric rocker switches

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US (1) US3413430A (en)
DE (1) DE1640906B1 (en)
FR (1) FR1510667A (en)
GB (1) GB1166865A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535478A (en) * 1967-02-20 1970-10-20 Lucas Industries Ltd Multicircuit electrical switches
US3591747A (en) * 1969-12-29 1971-07-06 Arrow Hart Inc Lever operated switch with tiltable contact actuator and flexible contacts
US4117445A (en) * 1977-05-16 1978-09-26 National Electric Corporation Power regulator
US4221941A (en) * 1979-01-08 1980-09-09 Gte Sylvania Wiring Devices Incorporated Rocker switch having improved contact-operating means
US4814554A (en) * 1987-11-06 1989-03-21 Joseph Magiera Switch assembly with redundant spring force and one-piece plunger
US4967043A (en) * 1989-05-30 1990-10-30 Eaton Corporation Absorbing overtravel in sequential switching
US5089715A (en) * 1989-04-26 1992-02-18 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Multiposition switch device for controlling a driving means
WO1993023865A1 (en) * 1992-05-12 1993-11-25 Otto Engineering, Inc. Rocker switch
US5725088A (en) * 1995-05-17 1998-03-10 Matsushita Electric Industrial Co., Ltd. Switch for use in electronic devices
US5938589A (en) * 1997-07-15 1999-08-17 Fuji Photo Optical Co., Ltd. Control switch device for an endoscope duct
US6157026A (en) * 1998-11-19 2000-12-05 Maxtec International Corporation Optical switch of the multiple push button type for producing a plurality of control signals
US6201905B1 (en) 1999-02-05 2001-03-13 Telemotive Industrial Controls Optical switch with controlled voltage output
US20040090190A1 (en) * 2001-05-03 2004-05-13 Alan Shields Lamp with multiple light-producing elements

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648923C2 (en) * 1976-10-28 1982-11-25 Swf-Spezialfabrik Fuer Autozubehoer Gustav Rau Gmbh, 7120 Bietigheim-Bissingen, De
GB2287127A (en) * 1994-03-01 1995-09-06 Defond Mfg Ltd Electrical rocker switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1939233A (en) * 1932-10-24 1933-12-12 Oakes Prod Corp Automobile lock structure
US2366474A (en) * 1942-07-25 1945-01-02 Arrow Hart & Hegeman Electric Slow break electric switch
US2506196A (en) * 1947-05-08 1950-05-02 Rotax Ltd Electric switch
US2633510A (en) * 1951-09-13 1953-03-31 Hetherington Inc Electric switch

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB571996A (en) * 1944-01-24 1945-09-18 Cooke & Ferguson Ltd Improvements in electric tumbler switches
DE910313C (en) * 1950-11-23 1954-04-29 Paul Hochkoepper & Co Elektrot Toggle switch, in particular for AC
FR1233560A (en) * 1959-03-25 1960-10-12 Electro Mecaniques Soc Et electric switch
GB1011074A (en) * 1961-10-17 1965-11-24 Arrow Electric Switches Ltd Improvement in hand actuating devices for electric switches
DE1196273B (en) * 1963-04-03 1965-07-08 Bosch Gmbh Robert Bipolar electrical toggle switch with Selbstrueckstellung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1939233A (en) * 1932-10-24 1933-12-12 Oakes Prod Corp Automobile lock structure
US2366474A (en) * 1942-07-25 1945-01-02 Arrow Hart & Hegeman Electric Slow break electric switch
US2506196A (en) * 1947-05-08 1950-05-02 Rotax Ltd Electric switch
US2633510A (en) * 1951-09-13 1953-03-31 Hetherington Inc Electric switch

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535478A (en) * 1967-02-20 1970-10-20 Lucas Industries Ltd Multicircuit electrical switches
US3591747A (en) * 1969-12-29 1971-07-06 Arrow Hart Inc Lever operated switch with tiltable contact actuator and flexible contacts
US4117445A (en) * 1977-05-16 1978-09-26 National Electric Corporation Power regulator
US4221941A (en) * 1979-01-08 1980-09-09 Gte Sylvania Wiring Devices Incorporated Rocker switch having improved contact-operating means
US4814554A (en) * 1987-11-06 1989-03-21 Joseph Magiera Switch assembly with redundant spring force and one-piece plunger
US5089715A (en) * 1989-04-26 1992-02-18 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Multiposition switch device for controlling a driving means
US4967043A (en) * 1989-05-30 1990-10-30 Eaton Corporation Absorbing overtravel in sequential switching
US5343007A (en) * 1992-05-12 1994-08-30 Otto Engineering, Inc. Rocker switch
WO1993023865A1 (en) * 1992-05-12 1993-11-25 Otto Engineering, Inc. Rocker switch
US5725088A (en) * 1995-05-17 1998-03-10 Matsushita Electric Industrial Co., Ltd. Switch for use in electronic devices
US5938589A (en) * 1997-07-15 1999-08-17 Fuji Photo Optical Co., Ltd. Control switch device for an endoscope duct
US6157026A (en) * 1998-11-19 2000-12-05 Maxtec International Corporation Optical switch of the multiple push button type for producing a plurality of control signals
US6201905B1 (en) 1999-02-05 2001-03-13 Telemotive Industrial Controls Optical switch with controlled voltage output
US20040090190A1 (en) * 2001-05-03 2004-05-13 Alan Shields Lamp with multiple light-producing elements
US6882119B2 (en) 2001-05-03 2005-04-19 Alan Shields Lamp with multiple light-producing elements

Also Published As

Publication number Publication date
DE1640906B1 (en) 1971-08-05
FR1510667A (en) 1968-01-19
GB1166865A (en) 1969-10-15

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