| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: fraudulent unlocking of a lock for use in a game machine and the like in a distribution process and the like is desired to be capable of being grasped.SOLUTION: A lock includes a keyhole member with a keyhole, and a movement member which is moved from a first position by being pushed by an insertion member in the step of making the insertion member inserted into a keyhole and which is not returned to the first position in the step of making the insertion member extracted from the keyhole. The movement member can be moved to a second position, in which the keyhole is exposed more widely than in the first position, from the first position to cover at least a part of the keyhole, by being pushed by the insertion member in the step of making the insertion member inserted into the keyhole.SELECTED DRAWING: Figure 4 |
