| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a drive device capable of constituting with high accuracy the projection height of an operating member for moving a braking member which serving to prevent the rotation of a reel at the time a recording tape cartridge is not used to a rotation permissible position. <P>SOLUTION: This device is a drive device in which a recording tape cartridge 10 which is equipped with a reel part 28 which is housed in a casing 12 and in which an engaging part 44 is provided in the bottom 36 of a reel hub 32 around which a recording tape T is wound, a braking member 60 which is provided so as to be rotation impossible in the casing 12 and which can take a rotation locking position where it is engaged with the engaging part 44 and a rotation permissible position where it is released from the engaged state with the engaging part 44 by being brought into contact with the bottom 36 of the reel hub 32 and by being separated from the bottom 36, a reel gear 42 which is formed on the reel 28 and which is exposed from a gear aperture 20 which is provided by being bored in the casing 12 is loaded. Moreover, an operating member 112 which pushes up the braking member 60 to the rotation permissible position is provided in a rotary shaft 100 which is equipped with a driving gear 108 which rotates the reel 28 by being geared with the reel gear 42 and also the projection height of the operating member 112 is constituted to be adjustable. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
