Method for fixing horn on middle of wristwatch case, involves introducing post in recess formed in outer side surface of middle, and introducing and fixing pin in continuous housing, where housing is formed by holes of post and middle

摘要

The method involves forming a recess (3) in an outer side surface of a middle (1). A hole (5) is drilled on a lower surface or an upper surface of the middle, where the hole is opened in the recess. A post (8) is formed at an end (11) of a horn (6), which is contacted with the middle. Another hole (9) is drilled in the post at a position corresponding to the former hole such that the holes form a continuous housing during assembling the horn on the middle. The post is introduced in the recess, and a pin (10) e.g. screw, is introduced and fixed in the housing.