| 摘要 |
#CMT# #/CMT# The bearing (100) has a support (103) provided with housing to receive a suspended pivot system in which a shank of a staff (120) is inserted. The pivot system absorbs shocks subjected by a mobile part such as wheel (105), of a timepiece, where the pivot system comprises pivoting units (126, 126'). The pivot system is formed of a single piece that is surface covered with or completely made of polycrystalline material such as ceramic, where the material comprises precious metal element. #CMT#USE : #/CMT# Shock absorber bearing for a staff of a mobile part such as wheel e.g. balance, of a timepiece such as mechanical watch. #CMT#ADVANTAGE : #/CMT# The pivot system combines the suspension function and the pivot function in the single piece, thus limiting the number of constitutive pieces of the bearing to be manufactured and assembled, and hence simplifying the structure of the bearing, and reducing the manufacturing cost of the bearing. The single piece, which forms the pivot system, is surface covered with or completely made of polycrystalline material having less friction co-efficient and high wear resistance, thus enabling the bearing to have homogeneous rigidity characteristics and to resist frictions between the staff and the pivot system in a better manner, simplifying the maintenance of the bearing, improving the reliability of the bearing, and ensuring better positioning of the staff. #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 : Staff 126, 126' : Pivoting units. |
