| 摘要 |
PURPOSE:To reduce number of parts and to facilitate assembly by forming a spring part having a projection to engage winding stem groove parts of a winding stem integrally with the base body of a timepiece. CONSTITUTION:The winding stem 1 has the two winding stem groove parts 1a, 1b, a V ball part 1c and a winding stem pinion 1d. Stoppers 2a, 2b for positioning a bridge spring 3a to the outside diameter part of the stem 1 are integrally formed to a plate 2. A bridge 3 which is the base body of the timepiece has the bridge spring 3a provided with the projecting part and a head part 3b. The longitudinal direction of the spring 3a is constituted perpendicularly to the axis of the stem 1. The plane position of the spring 3a is determined as the head part 3b is defined by the stoppers 2a, 2b. The projecting part engages the groove part 1a and the steam 1 is pressed from above by the spring force of the spring 3a, by which the axial position of the stem 1 is determined. The stem 1 is made to serve as a guide in the diametral direction as well by the plate 2 and the projecting part of the bridge 3.
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