A press-type dental high-speed turbine handpiece

Abstract

A press-type dental high speed turbine handpiece comprises a shell with an inner cavity, a mandrel penetrating through the shell and a turbine and two bearings which are arranged in the shell, wherein the turbine and the bearings are installed on the mandrel in a sleeving mode, and the turbine is arranged between the bearings; one end of the shell serves as a sealing end, one end of the mandrel penetrates out from the sealing end, and a bearing installation seat of one bearing is machined in the inner cavity of the shell; the other end of the shell is sealed through a detachable cover, the other end of the mandrel penetrates out from the cover, and a bearing installation seat of the other bearing is machined in the cover; the shell is provided with an air port for enabling the inner cavity of the shell to be communicated with the outside. According to the press-type dental high speed turbine handpiece, the pressing area is large, force applying is accurate and stable, the problem that in the prior art, part contact is instable is solved, machine needle clamping and replacing are convenient, and the clamping stability is high.

Description

technical field [0001] The invention relates to the field of dental equipment, in particular to a press-type dental high-speed turbine handpiece. Background technique [0002] The bur of the pressing type dental high-speed worm handpiece of the prior art is replaced by pressing the corresponding button. For clamping, when it is necessary to take and place the bur, press the lower expansion part to open the clamping part, and then the bur can be taken and placed. [0003] The mandrel assembly and its internal components have the characteristics of small size and high precision requirements. The chuck is driven to move left and right by applying external force to realize the loosening and clamping of the chuck to the bur. This is the prior art. However, due to the small size of the components, when the pressing part and the collet are transmitted to each other, the connection between the two often appears to be incoherent, which affects the clamping and replacement of the bur...

AI Technical Summary

Problems solved by technology

[0003] The mandrel assembly and its internal components have the characteristics of small size and high precision requirements. The chuck is driven to move left and right by applying external force to realize the loosening and clamping of the chuck to the bur. This is the prior art. However, due to the small size of the components, when the pressing part and the collet are transmitted to each other, the connection between the two often appears to be incoherent, which affects the clamping and replacement of the bur; and due to the connection and fit Incoherent, the resulting clamping of the chuck to the needle is unstable, prone to problems such as flying needles during use, and there is a great potential safety hazard

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