(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.
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