To provide a switch device capable of securing excellent dustproof function at a contact part, capable of setting the width of a portion including an adhesive sheet and a switch substrate nearly the same as that of the switch substrate when sticking the adhesive sheet on the switch substrate.
The length of a cover sheet 34 and a spacer sheet 33 is set so as to be able to stick them on a surface 30a and backside 30b by turning them from the surface 30a side to the backside 30b through one end side 30c of a flexible printed board 30, and a non-adhesive part 33b, extending from a position facing the surface 30a of the printed board 30 to a position facing the backside 30b, is formed on the spacer sheet 33. An air releasing part 40 communicating with a dome-shaped movable contact 35 is formed by the surface 30a and backside 30b of the flexible printed board 30 and the non-adhesive part 33b.
Ichiro Suzuki
Hirohiro Ichimura
Kazuo Kobayashi
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