| 摘要 |
PURPOSE:To increase the accuracy of channel selection, by the constitution that individual two-point contact is made to each side of a V-shaped cam surface of stored member by the regulator. CONSTITUTION:When a given push button 6 is pushed in toward the arrow B against the coil spring 22, the push-button plate 5 is slightly slided to the same direction, and depression is delivered to the sliding plate 7 and the stop cam plate 8. Thus, from this time point, each component is incorporatedly slided, and the regulator 12 at neutral turning position approaches the cam 24, and the right contact approaches the V-shaped cam 24 and abuts on the cam right side 24a. Then, when the push button 6 is depressed, the right contact of the regulator 12 is slided and guided to the V-shaped height with the cam right side 24a and turned clockwise, and finally, the left contact abuts on the cam left side 24b and is turned and stopped. Thus, the cam plate 23 receives each force toward C and D at the same time, and they are cancelled each other and not received with a greater unidirectional force biased. Thus, the alignment of the cam plate 23 is made stable and the channel selection can be increased with accuracy. |
