(19)
(11) EP 0 269 153 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.11.1988 Bulletin 1988/47

(43) Date of publication A2:
01.06.1988 Bulletin 1988/22

(21) Application number: 87202080

(22) Date of filing: 13.10.1982
(84) Designated Contracting States:
FR

(30) Priority: 16.10.1981 JP 15286681
04.03.1982 JP 2960782
14.05.1982 JP 6936982

(71) Applicant: MURAKAMI KAIMEIDO CO., LTD
 ()

(72) Inventors:
  • Nakayama, Kiyoshi
     ()
  • Muto, Tadayoshi
     ()

   


(54) Multi-position electrical switch


(57) The present invention relates to a multi-position electrical switch comprising a housing (1), an insulating board (2) provided with a pair of electrodes constituting fixed contacts, a pressure-sensitive electrically conductive rubber sheet (5) extending over said electrodes so as to form switch elements with the latter, a supporting plate (8) disposed on the rubber sheet and having a central ball-and-socket joint (9) and a plurality of openings, and an operating button (11) tiltably mounted on the ball of said joint.
The bottom face of the button (11) has four faces having raised pressing surfaces arranged for engagement with the portions of the rubber sheet corresponding to the switch elements when the button (11) is tilted. The ball of the joint (9) has pins whereas the socket has grooves for receiving respective ones of said pins when the button is tilted, the grooves being elastic and slightly narrower than the diameter of the pins in order to urge the button back from a tilted position to its untilted position.







Search report