Movement of dental high-speed turbine handpiece

Abstract

The invention relates to a movement of a dental high-speed turbine handpiece. The movement comprises a rotating shaft, and a wind wheel and two bearings which are sleeved on the rotating shaft, the bearings are respectively positioned at two sides of the wind wheel, positions on a cylinder corresponding the bearings are respectively provided with an annular groove, an O-shaped rubber ring is arranged in the annular groove, and the O-shaped rubber ring is made by using a fluorubber material. The movement of the dental high-speed turbine handpiece has the advantages of stable running and long service life.

Description

technical field [0001] The invention relates to a dental handpiece, in particular to a movement of a dental high-speed turbine handpiece. Background technique [0002] Dental high-speed turbine handpiece is a high-speed rotary cutting medical device driven by airflow. The speed can reach 200,000 rpm to 600,000 rpm. It is mainly used for cutting teeth, preparing tooth cavities, and preparing tooth shapes. and tooth modification etc. [0003] The dental high-speed turbine handpiece is mainly composed of a handle and a head connected to the handle. There are water inlet pipes, air inlet pipes and air return channels inside the handle. The head includes the shell and the movement inside. The wind wheel and two bearings on the rotating shaft, the bearings are located on both sides of the wind wheel, ring grooves are respectively arranged on the positions corresponding to the bearings on the cylinder body, and "O" type rubber rings are arranged in the ring grooves to play To fix...

AI Technical Summary

Problems solved by technology

The "O" type apron is very important to the overall performance of the dental high-speed turbine handpiece. Too much elasticity will cause the dental high-speed turbine handpiece to be unstable and vibrate during the working process; if the elasticity is too small, the "O" type apron cannot work. To the effect of shock absorption and buffering, it will also cause instability in the working process of the dental high-speed turbine handpiece

The existing "O" rubber ring is made of nitrile rubber, which has insufficient performance in high temperature resistance, oil resistance, and abrasion resistance, and is easy to deform and age. After a long time of use, it will cause unstable operation of the movement and shorten the service life.

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