Clamping structure for dental low-speed handpiece

Abstract

Provided is a clamping structure for a dental low-speed handpiece. The clamping structure comprises a large toothed shaft, an opening clamping sleeve and a pressing part, wherein the large toothed shaft is rotationally supported inside a dental handpiece head shell, the opening clamping sleeve is disposed in an inner cavity of the large toothed shaft and clamps a bur, and the pressing part is disposed at the top of the opening clamping sleeve. Symmetrically arranged elastic clamping pieces and limiting pieces are disposed at the top of the opening clamping sleeve; the pressing part makes the elastic clamping pieces be open through an arc-surface pushing-pressing structure; and the elastic clamping pieces clamp the tail of the bur through a buckling structure. The elastic clamping pieces of the opening clamping sleeve are opened through the arc-surface pushing-pressing structure so that entering or withdrawal of the bur can be achieved; the tail of the bur is clamped through the buckling structure, and the semi-cylindrical tail of the bur and a long-strip arc hole of the large toothed shaft are buckled, so that the bur is integrated with the large toothed shaft and does not rotate freely; and the structure is simple, operation is convenient, the clamping force is large, and the bur is not prone to slipping. Besides, according to the clamping structure for the dental low-speed handpiece, an original external cooling mode of cooling water is changed to an internal cooling mode with an internal cooling structure, and the cooling efficiency during working of the dental low-speed handpiece is improved.

Description

technical field [0001] The invention belongs to the technical field of oral medical instruments, and in particular relates to a clamping structure for a low-speed dental handpiece. Background technique [0002] The clamping structure of the dental low-speed handpiece is an important structure of the dental low-speed handpiece. Now the common way to hold the working bur is the wrench type, and the working bur is clamped by moving the wrench left and right. The above-mentioned structure is relatively complicated, resulting in that the cooling water needs to be sprayed from the outside of the mobile phone, and it is difficult to spray to the required cooling point, which reduces the cooling effect, and this structure is inconvenient to use, the clamping force is small, and the bur is easy to slip. Therefore it is necessary to propose improvements. Contents of the invention [0003] The technical problem solved by the present invention is to provide a clamping structure for d...

AI Technical Summary

Problems solved by technology

The above-mentioned structure is relatively complicated, which leads to the need for cooling water to be sprayed from the outside of the mobile phone, and it is difficult to spray to the required cooling point, which reduces the cooling effect, and this structure is inconvenient to use, the clamping force is small, and the bur is easy to slip

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