US2792464A - Tumbler switch - Google Patents

Tumbler switch Download PDF

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Publication number
US2792464A
US2792464A US405874A US40587454A US2792464A US 2792464 A US2792464 A US 2792464A US 405874 A US405874 A US 405874A US 40587454 A US40587454 A US 40587454A US 2792464 A US2792464 A US 2792464A
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US
United States
Prior art keywords
rocker
switch
bearing member
actuating
contact
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
US405874A
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English (en)
Inventor
Leuthold Otto
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority claimed from GB1586156A external-priority patent/GB833492A/en
Application granted granted Critical
Publication of US2792464A publication Critical patent/US2792464A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01H23/166—Driving mechanisms with positive action

Definitions

  • VThe present invention relates to a tumbler switch which represents a further development of the tumbler switch accordinf7 to the United States-patent,applicatioxnSerial No. 269,454, now abandoned,of-which the instant application is a continuation-impart, and incorporatesia beam carried by at least oney supporting member-.in a rocking bearing in which it can tilt, said beam serving ⁇ to operate ⁇ a switching rocker.
  • the primary objectV of the present invention is, therefore, to providega tumbler switch in which ,the Contact can be opened even if the contact ⁇ elements .may perchance be welded together.
  • the tumbler switch according to .the present invention is essentially. .characterized in that theV switching rocker has at least one actuating lug which-projects into the path of motion of anl associated cam of the beam and, upon actuation of the beamat least for opening said Contact, comes up against the cam and then positively initiates movement of the switching rocker if the latter has not been previously tilted into its otherswitching position.
  • a further object of the present invention is to provide means presenting eiective and durable tumbler switches which are economically vmanufactured from a minimum number of parts, may be easily installed, and require no additional maintenance after installation.
  • the design is such that the cam can only come up against the actuating lug when the beam has made more than haii of the motion it requires for actuating the switch, i. e., when the beam has been pivoted past its dead center position.
  • the beam may also include two cams which, when said beam moves in one way or the other, may cooperate with the actuating lug or lugs of the switching rocker in order to positively start tilting movement of the latter.
  • Fig l is a side view of-a tumbler switch according to vrthe invention with closed contact, the insulatingbase being shown in section;
  • Fig. 2 is a sectional view of the tumbler switchembodying the invention, the viewfbeing .taken along line II-.Iliof Fig. 1;
  • Fig. 3 is a partial longitudinal. sectional View of the ⁇ samecswitchl withv opened contact, vthis ⁇ view being taken along line III-.III of'Figl;
  • the operating beam 17 has two projections 19 which, as supporting members, engage in the upwardlyV opening bearing notches. From Fig l it maybe seenthat supporting members 19 at their free ends, and also the associated bearing notches, have cylindrical surfaces cooperating with each other and sliding on each other when beam 17 tilts.
  • Each supporting member 19 is provided with a flange 2t? which extends past Athe associatedbearing lug, preferably along the side thereof turned to the other bearing lug, thus preventing lateral displacement of operating beam 17 in the direction of its tilting axis.
  • Beam 17, supporting members 19, and tianges 20 may; if desired, be formed from one single piece Yof insulating material.
  • Switching rocker 1S engages with its shoulders 18a in the downwardly opening notches of bearing member 16 and ⁇ is resiliently connected to beam 17 by tension spring 2l.
  • One end of said tension spring 2i' engages a lug or crossbar 22 of the switching rocker, said lug being provided with a concave knife-edge 22a, and the other end of the spring is attached to a cross-pin 23 of the beam.
  • the spring is locatedbetween the two supporting mem- 'bers i9 and/or flanges 2i? of the beam.
  • the free end of rocker 18 carries Ya contactelement 24 which cooperates with a stationary contact element 2S seated on a leaf spring 26.
  • For connecting the electric wires to the switch provision is made for terminal screws 27 and 2d, the iirst of them being connected to leaf spring 26, and the second of them by means of a connecting rail 2g to bearing member 16 and thus to rocker 1%.
  • Switching rockerl includes two actuating lugs 33, each of which extends into one of said grooves 32 and between which tension spring 21 is arranged.
  • the width of groove 32 is, however, appreciably greater thanthe thickness of actuating lugs' 33, so that each of these has a great amountl of play in its associated groove.
  • the rocker 1S consists of a rst portion extending rearwardly from the lugs 33 and shoulders 18a, e, g. the right-hand portion as seen in Fig. l, and of a second portion bent over and forwardly from the rearmost point of said rst portion of the rocker, whereby the contact element 24 is carried at the free and foremost end of said bent over rocker portion and thus is located substantially at the same level as the lower bearing surface of the bearing member 16 against which the shoulders 18a of the rocker 18 adjacent the lugs 33 abut.
  • rocker 18 When operating beam 17 is tilted out of the position shown in Fig. l into that illustrated in Fig. 3, switching rocker 18 springs from the closed into the open position by action of tension spring 21. In the open position as in Fig. 3, the rocker abuts against a bent-over lug 34 (Fig. 2) of bearing member 16. If beam 17 swings in the other direction, rocker 1S again moves into the closed position as in Fig. 1, where the two contact elements 24 and 25 are engaging each other.
  • the tumbler switch could also be designed as a change-over switch by arranging a second leaf spring with a second stationary contact element in such a way that the contact element on the switching rocker engages said second stationary contact element on being tilted upwards.
  • lug 34 acting as stop, can be omitted.
  • the switching rocker becomes firmly welded either when tilted downwards or upwards. If the latter is the case, upon actuation of beam 17 the cams 30 or 31 come up against actuating lugs 33 of rocker 1S, whereupon the tilting movement of the switching rocker can be effected positively.
  • cams 3i) and 31 are so arranged that they can only cooperate with the associated actuating lug 33 whenever the beam has passed through at least half of its movement required for operating the switch. Obviously, cams Si) and 31 only come up against the associated actuating lugs 35 of the switching rocker if Vthe latter has n ot been previously tilted into the other switching position.
  • the tumbler switch could also be designed as intermediate switch or as two-pole switch.l This needs two electrically separate, similar switching systems arranged parallel beside each other and operated by a com- Should the switch according to the present invention be employed in a circuit where it would never be subjected to high currents or current surges, the cams 30/31 could be omitted. Finally, it would also be possible to provide only one single actuating lug cooperating with a single cam on the beam, or with two cams in the case of a change-over switch.
  • the switches disclosed hereinbefore have the advantage that any contact weldings perchance occurring cannot Vdisable the action of the switch, and that the contact can always be positively opened.
  • a tumbler switch comprising a base of insulating material, an electrically conductive bearing member mounted on said base and having front and rear faces provided, respectively, with first and second bearing notches arranged opposite one another, an operating beam of insulating material provided with projection means engaging in said first bearing notches, whereby said beam is tiltably supported on said front face'of said bearing member, a switching rocker provided with a rst portion having front and rear ends and having shoulder means at said front end engaging in said second notches of said bearing member on the rear face thereof for rocking movement of said rocker relative to said bearing member, said rocker further being provided with a second portion extending forwardly of said base from said rear end of said first portion and having a rst contact element fixed thereto at the foremost part of said second portion, resilient means connected at one end to said operating beam and at another end to said switching rocker adjacent the junction of said first and second portions and operable to retain both said beam and said rocker on said bearing member, at least one pair of cams on said beam, said cams being space
  • a tumbler switch comprising a base of insulating material, a bearing member on said base and having front and rear surfaces, operating means of insulating material supported on said front surface of said'bearing member for rocking movement about a first axis, a switching rocker comprising lirst and second portions arranged at an acute angle with respect to one another with one end of said iirstvportion being in' contact with said rear surface of said bearing member for rocking movement of said roclrer about a second axis substantially parallel to said first axis, a contact element on that end of said "e" y ond portion of said rocker remote from said one end of said 'irst portion and movabletherewith, Vthe lengths of said first and second portions being predetermined to dispose said movable contact element in substantially co- ⁇ and engageable by said movable contact element, said Vresilient means alone normally being operable to roel;
  • said rocker about said second axis upon rocking move ment of said operating'means about said rst axis, said dream4 cam means when moving in said path being operable to apply force to said actuating means and initiate rocking movement of said rocker only upon failure of said resilient means to initiate said rocking movement due to binding of said contact elements.
  • a tumbler switch having a base of insulating material and a xed contact element thereon; the combination of a bearing member on said base and having front and rear surfaces, at least said rear surface of said bearing member being electrically conductive, with operating means pivotally engaging said front surface or said bearing member, electrically conductive rocker means engaging said rear surface of said bearing member for rocking movement relative thereto about an axis parallel to the axis of pivotal movement of said operating means, a movable contact element connected to said rocker means at a location substantially coplanar with said rear surface of said bearing member and engageable with said xed contact element in one position of said rocker means, spring means connected to both said operating means and said rocker means and biasing both the latter and said operating means into engagement with said front and rear surfaces of said bearing member, respectively, said spring means alone normally being operable to inpart rocking movement to said rocker means upon pivotal movement of said operating means on said bearing member, and cooperable means on said operating means and on said rocker means and adapted to a
  • said cooperable means comprising cam means on said operating means and actuating means on said rocker means, said actuating means being disposed within the path of movement of said cam means.
  • said cooperable means comprising cam members on said operating means spaced from one another substantially transversely of said axis of pivotal movement of said operating means and defining a recess, and at least one actuating lug on said rocker means projecting into said recess.
  • said cooperable means comprising at least two cam members on said operating means and spaced from one another in a direction substantially parallel to said axis of pivotal movement of said operating means, and at least two actuating lugs on said rocker means, said lugs projecting, respectively, into the paths of movement of said cam members as said operating means moves from its closed- Contact position to its open-contact position.
  • said spring means having one portion connected to said operating means intermediate said cam members and having another portion connected to said rocker means intermediate said actuating lugs.
  • said cooperable means further comprising two additional cam members on said operating means, said additional cam members being spaced from one another in a direction substantially parallel to said axis of pivotal movement of said operating means and being spaced from said rstnamed cam members, respectively, in a direction substantially transverse to said axis of pivotal movement of said operating means, whereby a recess is defined between each of said first-named cam members and the corresponding one of said additional cam members, said lugs projecting into said recesses, respectively.
  • said rocker means comprising first and second portions extending substantially lengthwise of one another and each having opposite front and rear ends, said front end of said first portion engaging said rear surface of said bearing member, said rear end of said rst portion being joined to said rear end of said second portion, said movable contact element being connected to said front end of said second portion, and the length of said second portion being predetermined to dispose said movable contact element in substantially coplanar relationship with said rear surface of said bearing member.

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  • Tumbler Switches (AREA)
US405874A 1953-07-31 1954-01-25 Tumbler switch Expired - Lifetime US2792464A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH316925T 1953-07-31
GB1586156A GB833492A (en) 1956-05-22 1956-05-22 Improvements in or relating to an electric tumbler switch

Publications (1)

Publication Number Publication Date
US2792464A true US2792464A (en) 1957-05-14

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ID=32327284

Family Applications (1)

Application Number Title Priority Date Filing Date
US405874A Expired - Lifetime US2792464A (en) 1953-07-31 1954-01-25 Tumbler switch

Country Status (3)

Country Link
US (1) US2792464A (de)
CH (1) CH316925A (de)
FR (1) FR1092927A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927983A (en) * 1958-08-29 1960-03-08 Cutler Hammer Inc Electrical switches

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL295780A (de) * 1963-03-01

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1733267A (en) * 1925-10-02 1929-10-29 Jefferson Electric Co Switch
US1777525A (en) * 1929-06-08 1930-10-07 Cutler Hammer Inc Electric snap switch
US1845510A (en) * 1929-11-27 1932-02-16 Paramount Electric Mfg Co Switch
US2534007A (en) * 1948-11-04 1950-12-12 Arrow Hart & Hegeman Electric Switch operating mechanism with positive kickoff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1733267A (en) * 1925-10-02 1929-10-29 Jefferson Electric Co Switch
US1777525A (en) * 1929-06-08 1930-10-07 Cutler Hammer Inc Electric snap switch
US1845510A (en) * 1929-11-27 1932-02-16 Paramount Electric Mfg Co Switch
US2534007A (en) * 1948-11-04 1950-12-12 Arrow Hart & Hegeman Electric Switch operating mechanism with positive kickoff

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927983A (en) * 1958-08-29 1960-03-08 Cutler Hammer Inc Electrical switches

Also Published As

Publication number Publication date
FR1092927A (fr) 1955-04-28
CH316925A (de) 1956-10-31

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