| 摘要 |
<p>PURPOSE:To obtain a small-sized link drive with less number of parts by employing a combination of an epicyclic gear and a cam. CONSTITUTION:A pinion gear 34 engages with the epicyclic gear 35. An internal gear 36, an A-carrier 41 and B-carrier 43 are sequentially penetrated in lamination by a cam post 45 fixed on a main base 32. And further, a C-planet gear 44 engages with the gear formed on the B-carrier 43. A mode change-over cam 46 is decelerated and driven at a prescribed speed by the C-planet gear 44. And, a cassette-lateralizing and head base retreating cam 47 as well as a cassette-erecting cam 48 are also decelerated and driven at another prescribed speed. A motion rocking link 52 is driven by the rotation of the motion-mode change-over cam 46. In a part of the peripheral surface on the lower side of the cam 47, a notch 61 is formed, with which a head base retreating link 62 engages. And in the upper surface of the cam 47, a cam groove 63 is formed. One end of a cassette horizontally rocking link 64 is engaged with the endless groove of loop-form.</p> |
