| 摘要 |
The handpiece (3), for a dental or surgical instrument, has a longitudinal shaft (13) with a tool holder mounting (5) at the leading end which is fitted with a lateral insertion opening (5a) for a fitted dental/surgical tool (6). The enclosed angle (W3) between the center axis (16) of the insertion opening and the center axis (13e) of the leading shaft is >=90[deg]. The leading cogwheel (58) of the leading drive shaft section (53c) meshes with the cogwheel (59) of the tool holder, on the side away from the insertion opening. The rear cogwheel (57) of the leading drive shaft section meshes with the matching cogwheel (56) at the trailing drive shaft section, on the side away from the insertion opening. |
