| 摘要 |
PURPOSE:To reduce the moving distance of a shutter and to open/close a hole precisely, by horizontally moving a sliding member engaged with opening member prepared on the side of a recording and reproducing device so that shutter member open/close the hole. CONSTITUTION:Sliders 8a, 8b are movably fitted to guide bars 6a, 6b through the holes 9a, 9b. A pair of shutters 10A, 10A' and 10B, 10B' are fitted to respective sliders 8a, 8b from up and down through pins 12 and respective shutters are horizontally moved together with the sliders 8a, 8b to open/close both turning holes 3, 3' and recording and reproducing holes 4, 4' formed on a cover. The end part 13 of each shutter is engaged with a guide 14 formed on the surface part of the cover. The sliders 8a, 8b are excited to the center each other by springs 11a, 11b and, at normal time, the shutters close the turning holes 3, 3' and the recording and reproducing holes 4, 4'. |
