Patent ID: 7434984

Claim:
A timepiece comprising: a case band having a bezel mounting portion formed by an annular recess which is open at its top and along its outer periphery, a stepped hole formed by a large diameter hole portion open in the bottom surface of the mounting portion and a small diameter hole portion connected with the lower end of that hole portion, and a accommodating portion connected with the lower end of the small diameter hole portion and crossing the stepped hole at right angles thereto; an annular bezel mounted in the bezel mounting portion rotatably both clockwise and counterclockwise relative to the case band and having an engaging portion formed in its rear surface facing the bottom surface of the bezel mounting portion by a plurality of serrations lying in the direction of its rotation; a click member held in the stepped hole vertically movably for engaging the engaging portion or disengaging therefrom; an urging body held in the large diameter hole portion for urging the click member toward the engaging portion normally; an operating member having a depression having an oblique push-up surface and a closing surface contiguous from the push-up surface at the open end of the depression and held in the accommodating portion movably to have its depression positioned in its unlocking position contiguous to the lower end of the small diameter hole portion by operation from outside the case band; an urging member urging the operating member normally for positioning the operating member in its locking position in which its closing surface closes the lower end of the small diameter hole portion; and a stopper member positioned between the click and operating members movably into and out of the depression along the push-up surface by movement of the operating member so that when it has left the depression and is supported on the closing surface, it may restrict the movement of the click member away from the engaging portion, while it relieves the click member from its restriction and allows its vertical movement when it has dropped into the depression.