| 摘要 |
PROBLEM TO BE SOLVED: To provide a clasp of a wristwatch, which is easy to assemble and handle.SOLUTION: A clasp of a wristwatch includes a lever, a connecting pin, a first fastening element loaded on the connecting pin, and a second fastening element cooperating with the first fastening element. The connecting pin is formed integrally with the lever and defines a first axis of rotation about which the connecting pin and the lever are rotated. The first fastening element is rotated about a second axis of rotation at a position away from the first axis of rotation, and the second fastening element closes or opens the clasp according to whether the lever is at a closed position or an open position. The first fastening element is rotated about a third axis of rotation when the lever is driven from the closed position to the open position, and the second axis of rotation is arranged as follows with respect to the first axis of rotation. When the lever is driven from the closed position to the open position, the second axis of rotation is moved from a geometrical plane to an outer side by a moving amount (R) having movement components in a direction of the third axis of rotation. |
