EP0303872A2 - Elektrische Schalter - Google Patents

Elektrische Schalter Download PDF

Info

Publication number
EP0303872A2
EP0303872A2 EP88112316A EP88112316A EP0303872A2 EP 0303872 A2 EP0303872 A2 EP 0303872A2 EP 88112316 A EP88112316 A EP 88112316A EP 88112316 A EP88112316 A EP 88112316A EP 0303872 A2 EP0303872 A2 EP 0303872A2
Authority
EP
European Patent Office
Prior art keywords
bridging
contacts
electric switch
operating member
resilient
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.)
Ceased
Application number
EP88112316A
Other languages
English (en)
French (fr)
Other versions
EP0303872A3 (de
Inventor
Eric Albert Somerfield
Joseph Thomas Morris
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.)
Crabtree Electrical Industries Ltd
Original Assignee
Crabtree Electrical 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 Crabtree Electrical Industries Ltd filed Critical Crabtree Electrical Industries Ltd
Publication of EP0303872A2 publication Critical patent/EP0303872A2/de
Publication of EP0303872A3 publication Critical patent/EP0303872A3/de
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring

Definitions

  • This invention is concerned with improvements relating to switches.
  • an electric switch comprising a housing, contacts in the housing which may be connected to form part of an electric circuit, a bridging device comprising a bridging part which is electrically conductive and which is movable (preferably linearly) between a first position in which it is spaced from at least one of the contacts and a second position in which it bridges the contacts to close the circuit, and a reslient part which urges the bridging part to its first position.
  • the switch comprises an operating member, preferably affording a cover for the bridging part and the contacts, which is mounted for movement.
  • the operating member is mounted on the housing, means being provided to guide the operating member for linear movement between its rest and advanced positions.
  • the bridging part is resiliently urged against the operating member by the resilient part, so that movement of the bridging part into its first position causes movement of the operating member into its rest position, and movement of the operating member from its rest position causes movement of the bridging part towards its second position against the action of the resilient part.
  • the bridging and resilient parts may be separate elements, the bridging part for example being of metal and lying generally in a plane extending parallel to a plane passing through the contacts, and the resilient part being located generally between the contacts and being (e.g.) of elastomeric material and to which the bridging part is secured.
  • the resilient part may be in the form of a compression spring to which the bridging part is secured.
  • the bridging and resilient parts are integral, and are advantageously formed from a single length of wire coiled to provide a helical spring having an diametrically enlarged section at one end, the enlarged section affording the bridging part and the remainder affording the resilient means.
  • the helical spring engages the underside of an operating member which provides a cover for the bridging part and the contacts, and which is guided for linear movement between rest and advanced positions, depression of the operating member on the side thereof opposite to that engaged by the spring causing the spring to be compressed and the bridging part thereof to be moved into bridging engagement with the contacts.
  • the switch which is the preferred embodiment of this invention is specifically a simple press switch, whereby a circuit into which the switch is connected may be momentarily closed by a press button-type movement, and opened by release movement, and is particularly suitable in low current applications.
  • the switch comprises a housing 6, conveniently of plastics material, provided with a generally rectangular, open-topped recess 8. Slots 10 extend through side walls 8 a , 8 b of the housing and open into the recess 8, within each of which slots a contact 12 is located, so that the two contacts extend generally towards the centre of the recess 8, with a degree of separation.
  • One of the contacts 12 is shown in full in dotted lines in Figure 2.
  • a bridging device 16 afforded by a single length of wire coiled to form a resilient part 20, in the form of a helical spring, and a bridging part 18 afforded by a diametrically enlarged end section of the spring.
  • the resilient part 20 has a diameter which is less than the separation between the contacts 12, whilst the bridging part 18 has a diameter greater than said separation.
  • the resilient part rests on a bottom wall 8 c of the housing 6, urging the bridging part 18 into engagement with an actuator afforded by a cover member 22, the cover member 22 comprising side arms 24 terminating in flanged portions 26, which are slidable engagable within channels 14 provided in side walls 8 a , 8 b of the housing 6.
  • the bridging part 18 may be moved against the action of the resilient part 20 towards and into engagement with the contacts 12, to close the circuit in which the contacts are connected, such movements being guided by engagement of the flanged portions 26 within the channels 14.
  • the cover member 22 moves under the action of the helical spring to its rest position, determined by engagement of the terminal portions 26 with a shoulder defining the termination of the channels 14, with the circuit open.
  • the resilient part 20 of the bridging device is in the form of a tapered helical spring, to provide additional stability, whilst the bridging part 18 is afforded by a plurality of generally coplanar turns, to ensure positive engagement with the contacts 12.
  • the bridging device 16 may be located in engagement with locating formations, such as may be afforded by shallow recesses, in the base wall 9 and the underside of the cover member 22.

Landscapes

  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP88112316A 1987-08-19 1988-07-29 Elektrische Schalter Ceased EP0303872A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8719610 1987-08-19
GB8719610A GB2209434B (en) 1987-08-19 1987-08-19 Switches

Publications (2)

Publication Number Publication Date
EP0303872A2 true EP0303872A2 (de) 1989-02-22
EP0303872A3 EP0303872A3 (de) 1990-01-17

Family

ID=10622508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112316A Ceased EP0303872A3 (de) 1987-08-19 1988-07-29 Elektrische Schalter

Country Status (4)

Country Link
EP (1) EP0303872A3 (de)
GB (1) GB2209434B (de)
MY (1) MY103907A (de)
ZA (1) ZA885964B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017832C1 (de) * 2000-04-11 2001-10-11 Kronenberg Gmbh H & J Türkontakt
CN109346342A (zh) * 2018-10-30 2019-02-15 广州小鹏汽车科技有限公司 一种开盖互锁开关

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444552A (en) * 1945-10-09 1948-07-06 Bruno Martinuzzi Push button
US2567421A (en) * 1947-01-30 1951-09-11 Bruno Martinuzzi Push-button switch
US2952754A (en) * 1959-07-13 1960-09-13 Union Carbide Corp Controlled loading electric switch
EP0012279A1 (de) * 1978-12-14 1980-06-25 Siemens Aktiengesellschaft Tastenschalter, insbesondere für Tastaturen in Schreibmaschinen und ähnlichen Einrichtungen
FR2474983A1 (fr) * 1980-02-04 1981-08-07 Telemecanique Electrique Petit interrupteur electrique a poussoir avec pont de contacts

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5535807B2 (de) * 1972-03-09 1980-09-17
US3826884A (en) * 1973-06-25 1974-07-30 Oak Industries Inc Keyboard switch
US3922513A (en) * 1973-07-05 1975-11-25 Texas Instruments Inc Key switch apparatus
US4052580A (en) * 1975-06-03 1977-10-04 Amf Incorporated Momentary contact pushbutton type switch having flexible, mounted housing
US4242546A (en) * 1978-11-06 1980-12-30 International Telephone And Telegraph Corporation Electrical push-button switch
DE3013115C2 (de) * 1980-04-03 1987-08-20 Schoeller & Co Elektrotechnische Fabrik Gmbh & Co, 6000 Frankfurt Elektrischer Tastenschalter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444552A (en) * 1945-10-09 1948-07-06 Bruno Martinuzzi Push button
US2567421A (en) * 1947-01-30 1951-09-11 Bruno Martinuzzi Push-button switch
US2952754A (en) * 1959-07-13 1960-09-13 Union Carbide Corp Controlled loading electric switch
EP0012279A1 (de) * 1978-12-14 1980-06-25 Siemens Aktiengesellschaft Tastenschalter, insbesondere für Tastaturen in Schreibmaschinen und ähnlichen Einrichtungen
FR2474983A1 (fr) * 1980-02-04 1981-08-07 Telemecanique Electrique Petit interrupteur electrique a poussoir avec pont de contacts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017832C1 (de) * 2000-04-11 2001-10-11 Kronenberg Gmbh H & J Türkontakt
CN109346342A (zh) * 2018-10-30 2019-02-15 广州小鹏汽车科技有限公司 一种开盖互锁开关

Also Published As

Publication number Publication date
EP0303872A3 (de) 1990-01-17
GB2209434A (en) 1989-05-10
ZA885964B (en) 1989-05-30
MY103907A (en) 1993-10-30
GB2209434B (en) 1991-11-27
GB8719610D0 (en) 1987-09-23

Similar Documents

Publication Publication Date Title
US4467160A (en) Low profile switch
US4324958A (en) Tactile switch device
US4146767A (en) Push-button switch
US3983355A (en) Switching apparatus
KR910007193A (ko) 코넥터
US5120922A (en) Momentary pushbutton slide switch
US4388503A (en) Multiple position pushbutton switch
US5066841A (en) Dual plunger switch
GB2073494A (en) Electrical keyswitch
KR100462031B1 (ko) 스위치장치
US4395609A (en) Cam operated dual switch assembly
US4609795A (en) Vibration protected switch
JPS5819825A (ja) スイツチ作動機構
US4590344A (en) Machine insertable DIP switch
US4613737A (en) Low profile pushbutton switch with tactile feedback
EP0303872A2 (de) Elektrische Schalter
US4767896A (en) Stamped circuitry assembly
US4473727A (en) Electric switch having helical spring bridging element
US3624328A (en) Pushbutton alternate action switch with a contact on the cam surface of the alternate action mechanism
US4659157A (en) Stamped circuitry assembly
US4200781A (en) Manual switch for portable tools
US4835348A (en) Electrical switch device
US4358646A (en) Slide selector switch
US4357592A (en) Variable resistor and switch assembly
US4249056A (en) Sequential switching device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19900307

17Q First examination report despatched

Effective date: 19920507

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19931105