| 摘要 |
#CMT# #/CMT# The bearing (100) has a support (103) provided with housing to receive a suspended pivot system in which a shank (121) of an axle (120) is inserted. The pivot system absorbs shocks subjected by a mobile part such as wheel (105), of a timepiece, where the pivot system includes pivoting units (126, 126'). The pivot system is formed as a single piece that is surface covered with or completely made of polymer such as charged polymer, where the polymer is chosen from polyoxymethylene, polyamide, polyetheretherketone (RTM: colorless organic polymer thermoplastic), and polyphenylene sulfide. #CMT#USE : #/CMT# Shock absorber bearing for an axle of a mobile part such as a wheel i.e. balance wheel, of a timepiece such as a mechanical watch. #CMT#ADVANTAGE : #/CMT# The pivot system combines the suspension function and the pivot function in the single piece, thus limiting number of constitutive pieces of the bearing to be manufactured and assembled, and hence simplifying the structure of the bearing, and reducing manufacturing cost of the bearing. The single piece, which forms the pivot system, is surface covered with or completely made of polymer, thus reducing frictions between the axle and the pivoting units during rotation of the axle, enabling the pivot system to be shaped by molding or injection in a simple, inexpensive and easily reproducible manner, improving the reliability of the bearing, enabling the bearing to have homogeneous rigidity characteristics, and ensuring better positioning of the axle. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic partial sectional front view of a shock absorber bearing of a timepiece. 100 : Shock absorber bearing 103 : Support 105 : Wheel 120 : Axle 121 : Shank 126, 126' : Pivoting units. |
