| 摘要 |
A portable timepiece has a timepiece exterior assembly with a mounting hole having seal surfaces and escape portions. A valve member has a shaft portion movably inserted into the mounting hole and a head portion connected to the shaft portion. An urging member is provided between the head portion and the assembly for urging the valve member toward the interior of the assembly. Seal members are mounted to the shaft portion in correspondence with the seal surfaces. The seal members are configured to be moved between a sealing position in which the seal members are held in contact with the seal surfaces, and an exhaust position in which the seal members are opposed to the respective escape portions. In the sealing position, the seal members define a closed space together with an outer periphery of the shaft portion and the escape portions opposed to the outer periphery. |
