| 摘要 |
The recording tape cartridge includes a case body formed by joining together an upper half and a lower half and a tape reel around which a recording tape is wound in the case body. The cartridge further includes a lid covering a front side of the case body, a reel lock member which has a braking claw to be engaged with an engagement tooth provided on a flange of the tape reel and which is adapted to slide with rotation of the rid, ribs nipping the reel lock member so as to perform positional regulation on its sliding reel lock member urging means for urging the reel lock member so as to engage the braking claw with the engagement tooth and a reel lock releasing member urging the reel lock member with rotation of the lid so as to release the engagement. Other cartridge further includes a fitting shaft portion rotatably fitted onto a center rod standing upright on an inner surface of the upper half, reel lock member formed by providing radially on the fitting shaft portion a brake releasing arm portion and a brake arm portion having a braking claw to be engaged with an engagement tooth formed in an upper flange of the tape reel and reel lock member urging means adapted to urge the reel lock member so as to engage the braking claw with the engagement tooth.
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