| 摘要 |
PROBLEM TO BE SOLVED: To provide a excellent feeling of a click without applying tensile force to a thin connection part by covering a keytop part and at the same time providing a cover, the lower end part of which is composed of a synthetic resin material. SOLUTION: A push-button switch 30 is formed of a prismatic keytop part 31, the plane form of which is rectangular a skirt-like elastic part 32 which opens downward from the lower end of the keytop part 31 integratedly formed with the keytop part 31 and a cover part 35 covering the keytop part 31, the hook-like lower end part 35a of which is locked to the circumferential edge part 2a of an opening 2 and the cross section of which has a nearly lateral U-shape. When the keytop part 31 is depressed, a conductive material composed of a carbon material applied to the lower end part 34 of the keytop part 31 is brought into contact with a contact circuit board 40 to close a contact circuit, so that a main circuit is actuated through a main circuit board 50. |
