公开(公告)号：EP1394639B1

公开(公告)日：2011-04-13

申请号：EP02726420.9

申请日：2002-05-15

申请人： Citizen Holdings Co., Ltd.

发明人： YAMAKAWA, Jindai, Citizen Holdings Co., Ltd.

IPC分类号： G04D1/10 ,  A44C5/14 ,  B25B27/08

CPC分类号： G04D1/10 ,  G04D3/0066 ,  Y10T29/53257 ,  Y10T29/53283

摘要： A tool for wristwatch, wherein a generally cylindrical head part tube body (1), a center tube body (2), and a tip tube body (4) are threaded with each other to form the tool body (5) of the tool for wrist watch (20), a small diameter hole (2d) and a partition part (2e) having a slope (2f) are formed in a through-hole (2c) in the center tube body (2), a hammering member (7) and a compression spring (6) are slidably stored in the through-hole (2c), a trigger shaft (8) comprises a small diameter part (8a) insertable into a center hole (7a) in the hammering member (7) and a large diameter part (8c) insertable into a small diameter hole (2d) continued to the small diameter part through a slope (8b), a deformed coiled spring (9) is wound on the large diameter part (8c) of the trigger shaft (8), and energizes the trigger shaft (8) in the direction of a sliding shaft (11) while tilting trigger shaft (8) so that the small diameter part (8a) can move toward the inside wall of the tool body (5), and the sliding shaft (11) comprises a large diameter head part (11a) at the rear end thereof and an engagement part (11b) for replaceably fixing the tool parts for wrist watch at the tip thereof and is loosely engaged with the small diameter hole (4c), and the tip thereof is projected from the tip tube body (4).