| 摘要 |
PURPOSE:To secure the engagement and disengagement between the pawl part of a pawl body and the ratchet part of a reel by specifying the pawl part by the guide part of a cassette case and sliding it. CONSTITUTION:The pawl body 4 is provided with a couple of pawl parts 10 in an upward spread shape before it, and a projection part 16 is formed at each pawl part 10. Further, a stopper part 15 positioned in front of the pawl bodies 4 and guide walls 18 for the projection parts 16 are formed on the bottom surface 6 of the case 1. When the pawl body 4 slides as shown by an arrow A, side walls 17 of the stopper part 15 contact the projection parts 16 of the couple of the pawl parts 10, which are spread to engage both ratchet parts 13 of reels 2 and 3 securely. When the pawl body 4 slides in the opposite direction of the arrow A, the projection parts 16 of the pawl parts 10 contact the guide walls 18, the projection parts 16 of the couple of pawl parts 16 contact the guide walls 18, and the couple of the pawl parts 10 are closed to disengage the reels 2 and 3 from the ratchet parts 13 securely.
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