US3588402A - Electrical switch - Google Patents

Electrical switch Download PDF

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Publication number
US3588402A
US3588402A US852995A US3588402DA US3588402A US 3588402 A US3588402 A US 3588402A US 852995 A US852995 A US 852995A US 3588402D A US3588402D A US 3588402DA US 3588402 A US3588402 A US 3588402A
Authority
US
United States
Prior art keywords
switch
lugs
contact
actuating member
casing
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
US852995A
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English (en)
Inventor
Clarence Willans Heath
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.)
Cinch Connectors Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3588402A publication Critical patent/US3588402A/en
Assigned to CINCH CONNECTORS LTD., A COMPANY OF UNITED KINGDOM reassignment CINCH CONNECTORS LTD., A COMPANY OF UNITED KINGDOM ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TRW INC.,
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
    • H02B1/044—Mounting through openings
    • H02B1/048—Snap mounting
    • 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
    • H01H23/14—Tumblers
    • H01H23/143—Tumblers having a generally flat elongated shape
    • H01H23/145—Tumblers having a generally flat elongated shape the actuating surface having two slightly inclined areas extending from the middle outward

Definitions

  • a rocker switch comprises a rockably mounted actuating member adapted to be rocked into opposed positions to open and close the switch under the action ofa snapover leaf spring, the actuating member being pivoted supported by lugs engaging apertures in the sidewalls of the switch casing, the lugs having portions of their periphery shaped to make line contact with the walls of the apertures.
  • PATENTEB JUN28 IHYI lElLhCTlltll CAlL FiWi'll Clill This invention relates to an electrical switch of the hind operated by roclting movement of an actuator element.
  • the present invention provides an electrical switch comprising a casing housing fixed and movable contacts and having a pivoted actuating member which is roclrable into opposite operative positions under the assistance of snap-over spring means to effect the opening and closing of the switch.
  • the actuating member being pivoted supported by lugs projecting laterally from opposite sides of the said member and respectively rotatable in apertures in opposed sidewalls of the switch casing, each lug being shaped at one part of its periphery to provide line contact with the wall of the aperture, the said portion being offset with respect to a plane containing the transverse centerline of the actuating member.
  • ll is a sectional view ofthe switch
  • lFlG. 2 is a plan view
  • H6. 3 is an end view
  • d is a side elevation of the cover or actuating element of the switch on an enlarged scale
  • FIG. 5 is a fragmentary view illustrating the shape of the pivoting lugs for the cover and shown on a greatly enlarged scale.
  • the switch comprises a casing l formed of insulating material, for example, synthetic plastics having a peripheral laterally extending flange 2 at its open end.
  • a first platelilte contact terminal 3 is provided extending through a slot in the base ll of the casing so that opposed end portions of the terminal project respectively inwardly and outwardly of the casing.
  • the portion extending outwardly of the casing comprises a wiring tail 5 and the portion extending inwardly of the casing comprises a post b.
  • the terminal El maltes a close fit in the slot in the base A and is retained against axial movement outwardly of the casing by a resilient tongue 7 struclt out of the material of the post portion is.
  • a second plateliltc terminal d extends through a further slot in the base d and includes a wiring tail tla projecting outwardly of the casing and a portion 9 overlying the inner face of the base t and supporting an electrical contact lltl.
  • a flexible metal strip contact is located in the casing and includes a base portion llll pivotally supported on the free end of the post is.
  • One end of the strip' which is disposed in overlapping relation to the contact it) supports a contact 112.
  • the strip is reversely bent to form a resilient bight t3 terminating in an upwardly extending lug M adjacent to which is a recess M5.
  • a wedge-shaped element llli depends integrally from the inner face of the cover in which has an apex engaging in the recess iii of the contact strip.
  • the lugs 17 are not of the conventional circular shape but include a portion of convert arcuate shape and a portion of substantially triangular shape in cross section including opposed flat faces l9, 2t), converging to an apex fill which is offset with respect to the plane containing the transverse centerline of the cover when the latter is in its mid position as shown in FIG. d.
  • the openings in the sidewalls lla, llb in which the lugs are received, are of circular shape so as to permit free rotation of the lugs.
  • the cover in the position illustrated in lFlG. l, the cover is in one of its two extreme positions and it will be noted that the element lid has been displaced towards the right and the free end of the base portion ill of the strip contact is in an upward position so that the contact 1?. is spaced from the contact ill.
  • the resilient contact strip will exert a resilient force against the element lltll so that it serves as a snap-over spring to impart a rapid snap-over action to the cover llti during the final portions ofthe roclting movement.
  • the apices ll of the lugs malte line contact with the inner walls of the openings in the sidewalls of the casing and by virtue of the apices Ell being offset with respect to the center rotational axis ofthe lugs, they act as fulcrums and an increased snapping action is imparted by the resilient strip to the cover llti during the final portions of the roclring movement so as to provide a rapid movement of the contacts into and out of engagement with one another.
  • the sidewalls of the casing are made sufficiently thin so as to be capable of outward flexing movement to permit the lugs l7 to be snapped into the openings in the sidewalls when the cover is being assembled with the casing.
  • the switch is adapted to be mounted into an aperture in a support, and for this purpose a resilient integral arm 22, 23, is provided at each end, the free end. of each arm having a shoulder 22a, 23a.
  • the switch is mounted in the aperture in the support by entering it base first through the aperture.
  • the arms 22, 23, flex inwardly by engagement with adjacent edges of the aperture until the shoulders 22a, 23a, snap through the aperture.
  • the switch is then retained in assembly by the flange 2 abutting one face of the support and the shoulders 22a, 23a abutting the opposite face.
  • An electrical switch comprising a housing, fixed and movable contacts in said housing, an actuating member pivotally mounted in said housing so as to be pivotal into the two opposite operative positions under the assistance of snapover spring means to effect the opening and closing of the switch, said actuating member being pivotally supported by lugs projecting laterally from opposite sides of the said member and respectively rotatable in opposed sidewalls of said switch housing each lug including a convexly shaped por tion facing away from the actuating member and a trisngularly shaped portion facing said actuating member, the apex of the triangularly shaped portion being directed towards the underside of the actuating member for making line contact with the wall of a circular aperture which is formed in opposed sidewalls of said housing and being offset with respect to the center rotational axis of the lugs.
  • said snap-over spring means for assisting the pivotal movement of the actuating member comprises a leaf spring pivotally supported in the casing and carrying a said movable contact adapted to cooperate with a said fixed contact to effect the opening and closing of the switch when the actuating member is in one or other ofits two operative positions.
  • the leaf spring comprises a first arm pivotally mounted on a support and having a contact on its free end and a second arm connccted to the first by an arcuate shaped bight portion, the second arm extending in superposed relation to the first arm and being engaged by a projection on the actuating member, the arrangement being such that roclring movement of the said member into one of its operative positions pivots the first arm to cause the contact carried thereby to engage the fixed contact and rocking movement into the other operative position pivots the first arm in an opposite direction to move the contact on the arm away from the fixed contact

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Tumbler Switches (AREA)
US852995A 1968-08-26 1969-08-25 Electrical switch Expired - Lifetime US3588402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4070668 1968-08-26

Publications (1)

Publication Number Publication Date
US3588402A true US3588402A (en) 1971-06-28

Family

ID=10416218

Family Applications (1)

Application Number Title Priority Date Filing Date
US852995A Expired - Lifetime US3588402A (en) 1968-08-26 1969-08-25 Electrical switch

Country Status (3)

Country Link
US (1) US3588402A (enrdf_load_stackoverflow)
DE (1) DE1943352A1 (enrdf_load_stackoverflow)
GB (1) GB1230820A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879592A (en) * 1974-02-11 1975-04-22 Controls Co Of America Switch having pivoted u-shaped resilient conductive blade
US4273975A (en) * 1976-01-20 1981-06-16 Nordic Finance And Trade (Panama) Ltd. Inc. Electric circuit breaker
DE3144740A1 (de) * 1981-11-11 1983-05-19 Max Kammerer Gmbh, 6370 Oberursel Wippschalter
US4481388A (en) * 1982-02-26 1984-11-06 Electrak International, Inc. Electrical plug with automatic shut-off feature
US4924047A (en) * 1986-09-16 1990-05-08 Omron Tateisi Electronics Co. Seesaw switch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879592A (en) * 1974-02-11 1975-04-22 Controls Co Of America Switch having pivoted u-shaped resilient conductive blade
US4273975A (en) * 1976-01-20 1981-06-16 Nordic Finance And Trade (Panama) Ltd. Inc. Electric circuit breaker
DE3144740A1 (de) * 1981-11-11 1983-05-19 Max Kammerer Gmbh, 6370 Oberursel Wippschalter
US4447689A (en) * 1981-11-11 1984-05-08 Max Kammerer Gmbh Slide actuated, snap acting multiple rocker switch
US4481388A (en) * 1982-02-26 1984-11-06 Electrak International, Inc. Electrical plug with automatic shut-off feature
US4924047A (en) * 1986-09-16 1990-05-08 Omron Tateisi Electronics Co. Seesaw switch

Also Published As

Publication number Publication date
DE1943352A1 (de) 1970-03-05
GB1230820A (enrdf_load_stackoverflow) 1971-05-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CINCH CONNECTORS LTD., A COMPANY OF UNITED KINGDOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TRW INC.,;REEL/FRAME:004834/0974

Effective date: 19871124

Owner name: CINCH CONNECTORS LTD., A COMPANY OF UNITED KINGDOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TRW INC.,;REEL/FRAME:004834/0974

Effective date: 19871124