To provide a switch device with a lock mechanism simple in attaching/detaching work, in a switch device wherein an operation part and a switch part are attached to and detached from each other while being rotated with respect to each other.
This switch device is provided with: an operation part (a); a switch part b; and a lock mechanism c interlaid between the operation part (a) and the switch part b, used for fixing and mounting either one of the switch part b and the operation part (a), having a rotating body c1 rotatably held to the other one of them, permitting attachment and detachment of the either one when the rotating body c1 is located at a first rotation position, and locking the rotating body c1 when the rotating body c1 is located at a second rotation position.
SAKAI TAKAYUKI
MATSUMOTO ATSUSHI
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