| 摘要 |
PROBLEM TO BE SOLVED: To provide a push switch in which a movable member is prevented from being damaged.SOLUTION: A push switch 1 comprises: a substrate 10; a fixing sheet 16 which forms a recess on the front face of the substrate; a first fixed contact 12 which is arranged in the recess on the front face of the substrate; a second fixed contact 14 which is arranged around the first fixed contact in the recess on the front face of the substrate; a first movable member 201 having a convex dome shape which is housed in the recess on the front face of the substrate so that its end comes into contact with the second fixed contact, and when pressed down, whose central portion comes into contact with the first fixed contact; a second movable member 202 having a convex dome shape which is arranged on the first movable member; a third movable member 203 having a convex dome shape which is arranged between the first and second movable members; and a protective sheet 30 which covers the recess over the first, second and third movable members. A spring load of the third movable member is set lower than those of the first and second movable member. |
