| 摘要 |
<p>PURPOSE:To smoothly execute the extruding operation of a cassette by providing the cassette extruding device with three rack members, extruding the cassette by either one of a 2nd and a 3rd rack member and operating another mechanism with other rack member. CONSTITUTION:The 2nd and 3rd rack members 112, 113 are moved in the same direction by two mutually different strokes based upon an external input through an operation means and the cassette is extruded by either one of the members 112, 113. Thereby, only one of double pinions 117, 118 to be coaxially and unitedly rotated is used. Since the pinions 117, 118 are fixed to a cassette housing rack through a supporting spindle 116 and rotated on the fixed positions and guide shafts 110a, 110b for guiding the rack members 112, 113 is common are attached to the housing rack in the vicinity of the spindle 116, the size accuracy between the double pinions 117, 118 and the rack members 112, 113 and the accuracy of backlash variable can be improved, the rack members 112, 113 can be smoothly moved and the cassette can be smoothly extruded.</p> |
