一种牙科手机传动轴固定结构

By setting a wedge-shaped surface on the drive shaft and using pointed screws for compression, the problem of unreliable connection of the dental handpiece drive shaft fixing structure was solved, achieving a tight connection between the drive shaft and the handle, and improving the stability and convenience of the device.

CN224505604UActive Publication Date: 2026-07-17FOSHAN PIANZHI TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FOSHAN PIANZHI TECHNOLOGY CO LTD
Filing Date
2025-07-07
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing dental handpiece drive shaft fixing structure is prone to connection breakage due to unreliable fit between the support rod and the annular groove, affecting the stability of the equipment.

Method used

The drive shaft, designed with a wedge-shaped surface, is fitted with pointed screws. The wedge-shaped surface and the mounting parts exert pressure to tighten the drive shaft, forming a tight connection between the handle and the head module.

Benefits of technology

It improves the connection reliability of the drive shaft, avoids the problem of unreliable connection in the traditional structure, and achieves the advantages of easy installation and disassembly.

✦ Generated by Eureka AI based on patent content.

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Abstract

本实用新型公开一种牙科手机传动轴固定结构，包括：机头模块和手柄，所述机头模块与手柄相互适配组装，所述机头模块有插接到手柄内的传动轴，所述传动轴上有楔形面，所述手柄设有适配楔形面的安装件；通过所述安装件挤压传动轴上的楔形面，形成传动轴有向手柄内腔深处运动的力，并拉紧传动轴。实用新型通过提供一种牙科手机传动轴固定结构，通过在传动轴上设有楔形面，并由安装件挤压楔形面，从而拉紧传动轴，形成手柄和机头模块的紧密连接，解决了传统的固定结构需要使用支撑杆卡入环形槽中，易导致连接断开和连接不牢靠的问题，具有易于安装拆卸传动轴的优点。
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Claims

1. A dental handpiece drive shaft fixation structure, characterized by, The utility model relates to a handpiece module and handle, the handpiece module and handle are matched and assembled, the handpiece module has the transmission shaft inserted into the handle, the transmission shaft has the wedge surface, the handle is equipped with the mounting piece of the adaptation wedge surface, the transmission shaft is extruded the wedge surface through the mounting piece, forms the force that the transmission shaft has the movement to the depth of the handle inner chamber, and tightens the transmission shaft. The handle has the mounting part of the adaptation mounting piece, and the mounting part is located at the connecting end of the handle. The mounting part is the mounting hole, and the mounting piece is the pointed screw.

2. A dental handpiece drive shaft fixation structure according to claim 1, characterized in that: The transmission shaft is equipped with the recessed groove, and the wedge surface is adapted on the recessed groove.

3. A dental handpiece drive shaft fixation structure according to claim 2, characterized in that: The transmission shaft is equipped with the convex part, and the convex part is annularly arranged on the outer surface of the transmission shaft, and the wedge surface is adapted on the convex part.

4. A dental handpiece drive shaft fixation structure according to claim 3, characterized in that: The mounting hole is further equipped with the sealing piece.

5. The dental handpiece drive shaft fixation structure according to claim 3, wherein: The mounting hole is located at the same level, and the mounting hole is located at the axial core level position or below the transmission shaft, and the triangular end is formed by matching the inner chamber of the handle to limit the transmission shaft.

6. The dental handpiece drive shaft fixation structure according to claim 3, wherein: ​ 7. The dental handpiece drive shaft fixation structure according to claim 3, wherein: ​