BUTTON DEVICE OF CHANNEL SELECTOR

摘要

PURPOSE:To prevent a button or a restoration spring from being dropped by fixing the button on the end part of an operation shaft supported by a supporting frame so as to be slid and pivoted and connecting the restoration spring between the button and the supporting frame. CONSTITUTION:The botton 2 fixed on the operation shaft 3 is made of synthetic resin or rubber and an inner hole 13 connecting a large diameter part 13a with its small diameter part 13b in its axial direction is formed on the center part of the button 2. In a metallic sleeve 14 connecting its large diameter part 14a with a small diameter part 14b in its axial direction, the end part of the operation shaft 3 is fixedly engaged with the inner periphery of the small diameter part 14b and the large diameter part 13a of the inner hole 13 of the button 2 is pressed to the outer periphery of the large diameter part 14a. The restoration spring 15 is connected as a load between the rear plate 1b of the supporting frame and the linkage part 14c of the sleeve 14. At the replacement of the button 2, the botton 2 is pulled out from the sleeve 14 and th large diameter part of another button 2 is pressed into the sleeve 14.