FR2432759A1 - Press contact key switch for telephones - uses spring action metal tongues with gold plated contacts - Google Patents

Press contact key switch for telephones - uses spring action metal tongues with gold plated contacts

Info

Publication number
FR2432759A1
FR2432759A1 FR7823095A FR7823095A FR2432759A1 FR 2432759 A1 FR2432759 A1 FR 2432759A1 FR 7823095 A FR7823095 A FR 7823095A FR 7823095 A FR7823095 A FR 7823095A FR 2432759 A1 FR2432759 A1 FR 2432759A1
Authority
FR
France
Prior art keywords
telephones
key switch
spring action
press contact
gold plated
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.)
Granted
Application number
FR7823095A
Other languages
French (fr)
Other versions
FR2432759B1 (en
Inventor
Henri Fayet
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to FR7823095A priority Critical patent/FR2432759A1/en
Publication of FR2432759A1 publication Critical patent/FR2432759A1/en
Application granted granted Critical
Publication of FR2432759B1 publication Critical patent/FR2432759B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • 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
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/7013—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard in which the movable contacts of each switch site or of a row of switch sites are formed in a single plate

Landscapes

  • Push-Button Switches (AREA)

Abstract

The action of the switch is based on the elastic properties of metal tongues (1) in which thin blisters (4) are stamped. The desing is suitable for keyboard applications particularly for telephones. Several tongues formed in a single strip are riveted (8) at one end (20) of the tongue which results in its downward bending into a recess (11) in an action which is made more positive by the springy inversion of the blister. Contact is made by the tongue onto gold-plated studs (15) which are riveted to printed circuit tracks (14). A rapid breaking of the contact ensues from releasing the pressure (P).
FR7823095A 1978-08-04 1978-08-04 Press contact key switch for telephones - uses spring action metal tongues with gold plated contacts Granted FR2432759A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7823095A FR2432759A1 (en) 1978-08-04 1978-08-04 Press contact key switch for telephones - uses spring action metal tongues with gold plated contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7823095A FR2432759A1 (en) 1978-08-04 1978-08-04 Press contact key switch for telephones - uses spring action metal tongues with gold plated contacts

Publications (2)

Publication Number Publication Date
FR2432759A1 true FR2432759A1 (en) 1980-02-29
FR2432759B1 FR2432759B1 (en) 1981-12-11

Family

ID=9211619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823095A Granted FR2432759A1 (en) 1978-08-04 1978-08-04 Press contact key switch for telephones - uses spring action metal tongues with gold plated contacts

Country Status (1)

Country Link
FR (1) FR2432759A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007753A1 (en) * 1987-03-21 1988-10-06 Mueller Rolf K Press switch, in particular as key for a keyboard

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB450382A (en) * 1934-12-06 1936-07-16 Porzellanfabrik Kahla Improvements in and relating to contacts for electric switches
US2340615A (en) * 1942-03-20 1944-02-01 Radio Patents Corp Snap action device
CH450521A (en) * 1966-09-09 1968-01-31 Tschalaer Adolf Tilting mechanism, especially for a switching device
CH586956A5 (en) * 1975-02-28 1977-04-15 Stigler Otis Spa
US4027129A (en) * 1973-08-24 1977-05-31 Giko Kabushiki Kaisha Push button switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB450382A (en) * 1934-12-06 1936-07-16 Porzellanfabrik Kahla Improvements in and relating to contacts for electric switches
US2340615A (en) * 1942-03-20 1944-02-01 Radio Patents Corp Snap action device
CH450521A (en) * 1966-09-09 1968-01-31 Tschalaer Adolf Tilting mechanism, especially for a switching device
US4027129A (en) * 1973-08-24 1977-05-31 Giko Kabushiki Kaisha Push button switch
CH586956A5 (en) * 1975-02-28 1977-04-15 Stigler Otis Spa

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007753A1 (en) * 1987-03-21 1988-10-06 Mueller Rolf K Press switch, in particular as key for a keyboard

Also Published As

Publication number Publication date
FR2432759B1 (en) 1981-12-11

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Legal Events

Date Code Title Description
ST Notification of lapse