(19)
(11) EP 0 275 570 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.12.1988 Bulletin 1988/50

(43) Date of publication A2:
27.07.1988 Bulletin 1988/30

(21) Application number: 87202081

(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 switch comprises a housing (1), an insulating board (2), a plurality of stationary contacts each formed of a pair of film electrodes arranged around a central position on the insulating board, an insulating sheet (31) arranged on the insulating board and having cushions (32a-32h) expanding over the stationary contacts, movable contacts (33a-33h) inside the top of the cushions and forming switch elements with the stationary contacts, and an operation button (34) having pressing surfaces for driving each switch element by pressing said cushions, arranged tiltably and having projections (34i, 34j-34m) arranged on its bottom at positions corresponding respectively to the central position and to intermediate positions between the positions of the cushions for preventing the simultaneous operation of the switch elements.







Search report