US3535478A - Multicircuit electrical switches - Google Patents

Multicircuit electrical switches Download PDF

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Publication number
US3535478A
US3535478A US702842A US3535478DA US3535478A US 3535478 A US3535478 A US 3535478A US 702842 A US702842 A US 702842A US 3535478D A US3535478D A US 3535478DA US 3535478 A US3535478 A US 3535478A
Authority
US
United States
Prior art keywords
contacts
casing
cam
electrical
operating member
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
US702842A
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English (en)
Inventor
Keith Lewis
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.)
ZF International UK 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
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3535478A publication Critical patent/US3535478A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/16—Driving mechanisms
    • H01H23/168—Driving mechanisms using cams

Definitions

  • An electrical switch comprises in combination a casing, first and second contacts secured to the casing, an operating member pivotally mounted on the casing, a cam member pivotally mounted on the casing and movable in response to movement of said operating member, a cam form on said cam member, and a rigid conductive bridging member engaged with said first contact and pivotable about said first contact to a position wherein the bridging member bridges said first and second contacts to complete a circuit therebetween, said bridging member being engaged by said cam form and said cam form being such that movement of said cam member is transmitted to said bridging member to pivot said bridging member.
  • FIG. 1 is a sectional view of an electrical switch
  • FIG. 2 is a sectional view on the line 22 in FIG. 1
  • FIG. 3 is a sectional view on the line 33 in FIG. 1.
  • the switch includes a moulded synthetic resin casing 11 of open box-like construction.
  • the base 12 of the casing includes a pair of parallel longitudinally extending channels 12a, 12b which are sepa rated by a rib 13.
  • Each of the channels 12a, 12b houses four contacts 14, 15, 16, 17, 18, 19, 21, 22, respectively the contacts having electrically connected therewith respective blade terminals on the exterior of the casing.
  • the base 12 is stepped to define a central raised land 23 on which the contacts 15, 16 and 19, 21 are positioned.
  • a cam member 26 is pivotally supported within the casing 11 by means of two pairs of lugs 26a on opposite sides thereof which engage the lower ends of two pairs of short channels 11a in opposite walls respectively of the casing 11.
  • the lower surface of the cam member is formed with a slot 27 within which the rib 13 is located, and a transversely extending rib 28 which engages the upper surfaces of the plates 24, 25 mid-way between the contacts 15, 16 and 19, 21 respectively.
  • the opposite ends of the lower surface of the member 26 are formed with further ribs 29, 31 respectively which are parallel with ice the rib 28, the ribs 28, 29, 31 being divided into two parts by the slot 27.
  • the upper surface of the cam member 26 is formed with a transverse groove 32 the walls of which are defined by a lower pair of sloping surfaces 33, 33a which meet in a line vertically below an imaginary line joining the lugs 26a when the switch is in the position shown in FIG. 1, a pair of intermediate surfaces 34, 34a parallel with the base 12 of the casing 11 and a pair of upper sloping surfaces 35, 35a.
  • an operating member 36 which is pivotally engaged with the casing 11 through a pair of outwardly directed posts 37 integral with the casing 11 which extend through holes 38 in opposite walls respectively of the member 36.
  • Extending downwardly from the member 36 is an integral hollow finger 39, the central bore 41 of which houses a compression spring 42, and a plunger 43 the lower end 43a of which is hemispherical.
  • the spring 42 urges the plunger downwardly so that its end 43a engages the groove 32 in the upper surface of the member 26.
  • the contacts 15, 16 are connected in a first circuit
  • the contacts 16, 17 are connected in a second circuit
  • the contacts 19, 21 and 21, 22 are similarly connected in third and fourth circuits
  • the contacts 16 and 21 are the supply contacts for their respective circuits.
  • the contacts 14, 18 are not connected in any electrical circuit in this example.
  • the switch is shown in its first on position wherein the first and third circuits are completed through the plates 24, 25 respectively.
  • the operating member 36 is pivoted in a counter clockwise direction,
  • Pivotal movement of the operating member 36 from its first on position in a clockwise direction moves the switch to its off position.
  • Such movement pivots the cam member 26 about the other pair of lugs 26a thereby pivot ing the plates 24, 25 about the contacts 15, 19 respectively to bridge the contacts 14, 15, 18, 19 respectively but since the contacts 14, 18 are not operatively connected no circuits are completed.
  • the operation of the switch can be varied to suit a great number of operations.
  • the operating member 36 can be of the rocker type shown or could be of the more conventional lever type in which case the casing 11 is modified slightly to receive the lever.
  • An improved, multi-circuit, electrical switch comprising in combination:
  • first, second and third contacts aligned on the base
  • first and second contacts being positioned on the base in a common plane above the plane of the third third contact;
  • fourth, fifth and sixth contacts aligned on the base and disposed laterally with respect to the first, second and third contacts, the fourth and fifth contacts being positioned in a common plane above the plane of the sixth contact;
  • cam forms on said cam member at least one of said cam forms being engaged with said first and second bridging strips respectively, at least one further cam form spaced from said at least one cam form toward said third and six contacts so that pivotal movement of the cam member causes rocking movement of the first and second bridging strips to alter the circuits completed by the first and second bridging strips between the first, second and third contacts, and the fourth, fifth and sixth contacts respectively.
  • a switch as claimed in claim 1 further including seventh and eighth electrical contacts, the seventh electrical contact being aligned with the first, second and third contacts and lying in the plane of the third contact, and the eighth electrical contact being aligned with the fourth, fifth and sixth electrical contacts and lying in the plane of the sixth electrical contact; the first and second electrical contacts being disposed between the third and seventh electrical contacts, and the fourth and fifth electrical contacts being disposed between the sixth and eighth electrical contacts; at least one other cam form spaced from said at least one cam form toward said seventh and eighth contacts and the cam forms on the cam member being such that in a first position of the operating member of the switch the first bridging strip completes an electrical circuit between the second and third contacts while the second bridging strip completes an electrical circuit between the fifth and sixth contacts, in a second position of the operating member the first bridging strip completes an electrical circuit between the first and second contacts while the second bridging strip completes an electrical circuit between the fourth and fifth electrical contacts, and in a third position of the operating member the first bridging strip completes an electrical circuit between the
  • a switch as claimed in claim 2 wherein opposite walls of the casing each include a pair of spaced depressions which are engagable by respective projections on said cam member said cam member pivoting about an an axis passing through the first depression of each pair of depressions when the operating member is moved from its first position to its second position, and the cam member pivoting about an axis passing through the second depression of each pair of depressions when the operating member is moved from its second position to its third position, the four depressions being engaged simultaneously by their respective projections on the cam member when the operating member is in its second position.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Tumbler Switches (AREA)
US702842A 1967-02-20 1968-02-05 Multicircuit electrical switches Expired - Lifetime US3535478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7936/67A GB1210220A (en) 1967-02-20 1967-02-20 Electrical switches

Publications (1)

Publication Number Publication Date
US3535478A true US3535478A (en) 1970-10-20

Family

ID=9842633

Family Applications (1)

Application Number Title Priority Date Filing Date
US702842A Expired - Lifetime US3535478A (en) 1967-02-20 1968-02-05 Multicircuit electrical switches

Country Status (4)

Country Link
US (1) US3535478A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES351142A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1555986A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1210220A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746809A (en) * 1972-02-10 1973-07-17 M Gaber Hammer operated switch construction
US4121071A (en) * 1977-02-17 1978-10-17 Stackpole Components Company Electric switch
US4221941A (en) * 1979-01-08 1980-09-09 Gte Sylvania Wiring Devices Incorporated Rocker switch having improved contact-operating means
US4241244A (en) * 1977-12-22 1980-12-23 Swann David A Electric switches
US4242552A (en) * 1979-01-08 1980-12-30 GTE Sylvania Wiring Devices, Inc. Mounting means for interchangeable switch handles
US5136132A (en) * 1991-03-28 1992-08-04 Honeywell Inc. Alternate action mechanism
US5380972A (en) * 1993-11-19 1995-01-10 Motorola, Inc. Rocker switch
US20080041708A1 (en) * 2006-07-07 2008-02-21 Judco Manufacturing, Inc. Dual mode switch
US7498538B1 (en) 2007-07-20 2009-03-03 Judco Manufacturing, Inc. Sliding contact switch
US7880107B1 (en) 2007-10-12 2011-02-01 Judco Manufacturing, Inc. Momentary push button switch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1369436A (en) * 1970-10-31 1974-10-09 Lucas Industries Ltd Electrical switches
GB1418662A (en) * 1972-03-24 1975-12-24 Lucas Electrical Co Ltd Electrical switch
JP2525658Y2 (ja) * 1991-09-18 1997-02-12 アルプス電気株式会社 シーソ型スイッチ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469336A (en) * 1944-11-08 1949-05-03 Everard F Kohl Switch or like apparatus
US2506196A (en) * 1947-05-08 1950-05-02 Rotax Ltd Electric switch
US3413430A (en) * 1966-02-17 1968-11-26 Lucas Industries Ltd Electric rocker switches

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2469336A (en) * 1944-11-08 1949-05-03 Everard F Kohl Switch or like apparatus
US2506196A (en) * 1947-05-08 1950-05-02 Rotax Ltd Electric switch
US3413430A (en) * 1966-02-17 1968-11-26 Lucas Industries Ltd Electric rocker switches

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746809A (en) * 1972-02-10 1973-07-17 M Gaber Hammer operated switch construction
US4121071A (en) * 1977-02-17 1978-10-17 Stackpole Components Company Electric switch
US4241244A (en) * 1977-12-22 1980-12-23 Swann David A Electric switches
US4221941A (en) * 1979-01-08 1980-09-09 Gte Sylvania Wiring Devices Incorporated Rocker switch having improved contact-operating means
US4242552A (en) * 1979-01-08 1980-12-30 GTE Sylvania Wiring Devices, Inc. Mounting means for interchangeable switch handles
US5136132A (en) * 1991-03-28 1992-08-04 Honeywell Inc. Alternate action mechanism
US5380972A (en) * 1993-11-19 1995-01-10 Motorola, Inc. Rocker switch
US20080041708A1 (en) * 2006-07-07 2008-02-21 Judco Manufacturing, Inc. Dual mode switch
US20090229959A1 (en) * 2006-07-07 2009-09-17 Judco Manufacturing, Inc. Dual mode switch
US7498538B1 (en) 2007-07-20 2009-03-03 Judco Manufacturing, Inc. Sliding contact switch
US7880107B1 (en) 2007-10-12 2011-02-01 Judco Manufacturing, Inc. Momentary push button switch

Also Published As

Publication number Publication date
FR1555986A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-01-31
GB1210220A (en) 1970-10-28
ES351142A1 (es) 1969-05-16

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