| 摘要 |
PURPOSE:To make the switching between loading and unloading operation surely, by providing a drive direction switching assembly which contacts a fixed slide plane coaxially to a drive cam and oscillates to opposite direction at every half revolution. CONSTITUTION:A rack 58 being a constituent of a record disc carrying means is driven via a drive cam 83 having two missing teeth, drive direction switching assembly 86 and delivery gears 75-79, with a pinion gear 103 fixed to a turn table shaft. A cam 83a determining the stop position and a slide surface 83b having a step where a drive pin 91 of a drive direction switching assembly 86 contacts, are fixed coaxially to the drive cam 83, and every time when the drive pin 91 contacts the step of the slide surface 83b each a half revolution of the drive cam 83, the assembly 86 is shaken reversingly and the driving direction of the rack 58 is switched to opposite direction accordingly. |
