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Machine translation
1. (WO1981003577) DEPRESSABLE KEY DEVICE FORMING A DELAYED OPEN SWITCH
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003577    International Application No.:    PCT/FR1981/000068
Publication Date: 10.12.1981 International Filing Date: 03.06.1981
IPC:
H01H 5/02 (2006.01), H01H 9/02 (2006.01)
Applicants:
Inventors:
Priority Data:
8012657 06.06.1980 FR
Title (EN) DEPRESSABLE KEY DEVICE FORMING A DELAYED OPEN SWITCH
(FR) DISPOSITIF A TOUCHE ENFONCABLE FORMANT INTERRUPTEUR A OUVERTURE RETARDEE
Abstract: front page image
(EN)Depressable key device carrying a contact plate subjected to a magnetic attraction force attracting the key towards its rest position and cooperating with a conductor surface independent of the key to form a mechanical switch closed in the rest position of the key. The contact plate (15) carried by the lower plate (14) of the key comprises a resiliently yieldable tongue (23) ended by a contact stud (22) cooperating with a contact chip (21) of a printed circuit, the tongue (23) being deformed resiliently upon depression of the key to exert on the stud (22) an action which is opposite to the magnetic attraction of the stud by a sheet (17) of magnetic material. Application particularly to keyboards and push-buttons of the type having contacts which are closed in the rest position.
(FR)Dispositif a touche enfoncable portant une plaque de contact soumise a une force d"attraction magnetique sollicitant la touche vers sa position de repos et cooperant avec une surface conductrice independante de la touche pour former un interrupteur mecanique ferme dans la position de repos de la touche. La plaque de contact (15) portee par le plateau inferieur (14) de la touche comprend une languette elastiquement deformable (23) se terminant par un plot de contact (22) cooperant avec une pastille de contact (21) d"un circuit imprime, la languette (23) se deformant elastiquement lors de l"enfoncement de la touche pour exercer sur le plot (22) une action opposee a l"attraction magnetique de ce plot par une feuille (17) de materiau magnetique. L"invention s"applique notamment aux claviers et boutons-poussoirs du type a contacts fermes en position de repos.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)