Patent ID: 7182507
Filing Date: 2007-02-27
Classification: G04B

Abstract:
1. A portable timepiece comprising: a case body having a pipe attaching hole; a winding stem pipe arranged at an outer portion of the case body, having a case body outside projected portion formed with a holding portion and a rotation stop portion, inserted into the pipe attaching hole and fixed to the case body in a liquid tight manner; a ring having a male screw portion formed at an outer periphery thereof and a rotation stop hole fitted to the rotation stop portion and fitted attachably and detachably to and from the case body outside projected portion; a crown removably screwed to the male screw portion; an urging member included in the winding stem pipe for urging the crown in a direction of being separated from the case body; and a ring holding member pinched between the holding portion and the ring for holding the ring and capable of releasing the ring from being held when an external force sufficient for releasing the holding state is exerted to the ring.