| 摘要 |
A timepiece has a valve that discharges gas from an exterior assembly and includes a casing, a valve member that moves from a closed position to an open position in accordance with an inner pressure of the assembly, an exhaust button movable into the casing, a first spring urging the button and valve member away from each other, and a second spring urging the button toward the exterior of the assembly. When an inner pressure of the assembly is greater than a force of the first spring, the valve member is moved to the open position and a portion of the gas accumulates between the valve member and the button. When the button is moved into the casing, the accumulated gas is discharged to the exterior of the assembly by which the valve member is maintained at the closed position by the spring force of the first spring. |
