| 摘要 |
A reel brake device for use in a video-cassette recorder comprises a solenoid mounted on a base plate of a deck of the recorder and arranged around a reel shaft erected on the base plate, and a moveable core wire disposed between the solenoid and the reel shaft and below a reel table rotatably supported to an upper portion of the reel shaft, the core wire being actuated by the solenoid. The device further comprises: a disc shaped supporting plate fixedly fitted, to a middle portion of the reel shaft; a funnel-shaped elastic member disposed just below the supporting plate and slideably fitted to the reel shaft, the elastic member contacting with the lower surface of the supporting plate and the moveable core wire, the elastic member also having a slit so as to be radially expanded in the widening of the slit caused by the upward movement of the moveable core wire; and a brake ring radially spaced from the inner side surface of the reel table, the brake ring having an annular recess receiving each outer peripheral edge of the supporting plate and elastic member, the brake ring also having a slit radially extending throughout the width thereof, so as to be radially expanded by the expansion of the elastic member, whereby the outer surface of said brake ring can be contacted with the inner side surface of the reel table, in order to brake the rotation of the reel.
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