| 摘要 |
PURPOSE:To constitute the suppression mechanism, which purposes varying inductance in the push-button tuner, very flatly and make high-precision channel selection possible by the suppression mechanism including the frequency prescribing plate constituted by a pair of links. CONSTITUTION:Frequency prescribing plate 5 constituted by a pair of chevron- form intersecting master and slave links 5a and 5b is provided on the upper face of plural plane plate-form push-button materials mounted slidably between front plate 10 and back plate 11 so that the intersection angle of cam parts and the effective length of cam parts can be set arbitrarily. The upper face of the whole of arm 3 is slided in the longitudinal direction according to depression action of push-button 2, and suppression spring 8 is pressed upward, and link 5a of prescribing plate 5 is stopped by the tip of linkage part 8a. As a result, link 5b intersects slidably protruded axis 5e of link 5a, and the angle and the effective length of cam parts 5a and 5d formed by links 5a and 5b can be adjusted. By this very flat suppression mechanism, high precision channel selection is possible. |
