| 摘要 |
PROBLEM TO BE SOLVED: To provide a lock for example related to the lock of a door of a vending machine or the like, with simple construction, low manufacturing cost, excellent crime prevention, and suitable for recycle. SOLUTION: In this lock 1 unlocked by moving an inner cylinder 3a by a key and rotating the inner cylinder 3a, at least a spherical body is provided, which is loosely inserted in a through-hole communicating the inner cylinder 3a and an inner case 2a involving the inner cylinder 3a, internally mounted in the inner cylinder 3a, and dropped inside the radial direction of the inner cylinder 3a along the form of a cam rotated by the key to release engagement of the inner cylinder 3a and the inner case 2a.
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