| 摘要 |
PURPOSE:To obtain a high-precision and thin push-button tunner, by constituting the clutch mechanism where the clutch transverse moving plate is displaced by the longitudinal movement operation of the push-button part to make clutch mechanism capable of engaging and disengaging between the core supporting plate and the clutch disc. CONSTITUTION:Cam parts 10a and 11a are brought into contact with tabs 5a and 5c of frequency control plate 5 of push-button material 1 to move a pair of transverse moving plates 10 and 11 in directions opposite to each other. Displacement of transverse moving plates 10 and 11 is interlocked with the transverse movement action of core supporting plate 17, and core 18 can appear or disappear in the coil. Further, clutch transverse moving plate 25 inserted between frame side faces 12 and 13 is displaced by the longitudinal movement operation of material 1. By this displacement, press-fixing between core supporting plate 17 and ring projection 21d of clutch disc 21 is engaged or disengaged through lever plate 24. Under the clutch closed state where supporting plate 17 and disc 21 are press-fixed under the gearing state and are interlocked in one body, the prescribed position of core 18 for coil 19 is held for external oscillation, and the inductance is varied by the manual operation of manual shaft 27. |
