| 摘要 |
PROBLEM TO BE SOLVED: To allow sure release of a lock claw and sure fixing to an apparatus main body even under an external force or impact by suppressing variation in fitting positions of a lock craw while suppressing deforming of a lock claw mechanism when a release button part is energized for releasing. SOLUTION: A holding mechanism of a lock claw 1 comprises three parts including an upper case 4, a lock claw 1, and a coil spring 3 of a lid 10 rotatably provided to a case 20 of an apparatus main body, while the lock claw 1 is directly fitted and positioned to the upper case 4, to suppress variation in fitting positions of the lock claw 1. Meanwhile, the energizing direction of the lock claw 1 at releasing is set to be identical with the movement direction of the lock claw 1 at releasing, to suppress variation in engagement amount of the lock claw 1 under deformation. So, even under an external force or impact, sure lock release and lock engagement of the lock claw 1 with a top plate 6 of the case 20 on the apparatus main body side are allowed.
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