| 摘要 |
The wristwatch has two strap tongues (2) with end (4) pivoting fixed at a case (1) respectively, and a set of notching (10) cooperated with a set of stud for permitting the end (4) to occupy set of stable angular position with respect to the case. Each tongue is fixed between two horns (3) of the case by a pushpin (5). The notching is disposed on a circle arc, whose center is situated on a pivoting axis (9) of the strap tongues. Each notching is constituted by a series of trough in spherical portion form. |
