| 摘要 |
PURPOSE:To allow the extension of the depth and thin constitution, by providing the channel selection member with the unit frame so that the first and second arms can independently be supported. CONSTITUTION:The first arm 1 providing the regulating plate 3 and the stop piece 5 and operating components, and the second arm 10 having the push button 11 at one end are linked in plane to constitute the channel selection member A so that they can be extended lengthwise with the coupling of the shaft pin 9 and the slope hole 12. By supporting the arms 1, 10 with the slide holes a1, a1' and a2, a2' of front and rear walls b1, b1' and b2, b2' of the unit frame B, the member A can be provided on the unit frame B in slide-free. When the push button 11 is depressed against the restoring spring 18, the arms 1, 10 go forward and the slide plate 15 is moved laterally with the operation of the notch 17 and the shaft piece 16, and the memory pin 2 is operated to the cam 14 and the moving member 13 is moved laterally corresponding to the rotary angle of the regulating plate 3 to achieve the channel selection. Since the channel selecting section is located flat, the construction can be made thin. |
