CN203841799U

CN203841799U - Nose of dental handpiece

Info

Publication number: CN203841799U
Application number: CN201420159900.6U
Authority: CN
Inventors: 李成军
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-03
Filing date: 2014-04-03
Publication date: 2014-09-24
Anticipated expiration: 2024-04-03

Abstract

The utility model relates to a nose of a dental handpiece, which is used in a dental handpiece. A rear gasket, a rear bearing, a rear O-shaped ring, a wind wheel, a front bearing, a front O-shaped ring and a front gasket are sequentially arranged inside a shell from rear to front, wherein a main shaft is inserted into the axis of the rear bearing, the wind wheel and the front bearing and is fixed, and one end of the main shaft is sleeved with a clamping bar; an outlet of an air return pipe, an inlet of an air inlet pipe, an inlet of an atomized gas pipe and an inlet of an atomized water pipe are formed in the bottom end of the neck part of the shell; an inlet of the air return pipe is formed in a cavity of the shell; an outlet of the air inlet pipe is divided into two small orifice outputs by a main air pipe and arranged in the cavity of the shell; an outlet of the atomized gas pipe is formed in the neck part of the shell; an outlet of the atomized water pipe is formed under the outlet of the atomized gas pipe. The nose of the dental handpiece is simple in structure and can promote the conversion output strength of the wind wheel under the condition that the size of the wind wheel is reduced, so that the whole designed size of the nose of the dental handpiece can be reduced, and a dentist can work more conveniently and more flexibly.

Description

A kind of head of dental handpiece

Technical field

This utility model relates to a kind of head of dental handpiece, the head of the dental handpiece that specifically a kind of volume is little, torsion is large.

Background technology

In dentist work, usually can use dental handpiece and carry out dental care for client, the head spindle of dental handpiece is to drive by wind wheel, and being handle by dental handpiece, wind wheel drives from the gas-pressurized of outer introducing, the stressed blade face of wind wheel is larger in theory, the conversion dynamics of wind wheel is larger, but the head volume of dental handpiece is also larger, in dentist's work, because of people's oral cavity space little, so it is greatly that unfavorable dentist uses that the head volume of dental handpiece becomes, therefore the volume of the head of dental handpiece is less, rotation dynamics is more greatly the desirable designs of dentists.

Summary of the invention

The purpose of this utility model is to provide a kind of head of dental handpiece, and it can promote the conversion output dynamics of wind wheel in the situation that of wind wheel volume-diminished, thereby uses the global design volume-diminished of dental handpiece head, and it is convenient flexible that dentist is worked.

Technical solution of the present utility model is in casing, bonnet, rear pad, rear bearing, rear O type circle, wind wheel, fore bearing, front O type circle, front pad, main shaft, clamp on excellent basis, after being characterized in casing, pad, rear bearing, rear O type circle, wind wheel, fore bearing, front O type circle, front pad are to be in turn arranged on from back to front casing inside, and described rear O type circle and rear bearing are socket relations, and rear O type snare is on rear bearing; Described front O type circle and fore bearing are socket relations, and front O type snare is on fore bearing; Main shaft is inserted on the axle center of rear bearing, wind wheel, fore bearing fixing, and its one end is protruded before casing and is socketed with clamping rod; In casing cervical region bottom, the outlet of muffler is set, the entrance of the entrance of air inlet pipe, atomization trachea, the entrance of atomization water pipe, the entrance of muffler is arranged in chassis cavity and locates under the wind wheel left side, the outlet of air inlet pipe is divided into the output of two tubule mouths by main trachea and is arranged in chassis cavity and locates under wind wheel the right, and the outlet of atomization trachea is arranged on the face of cylinder of casing cervical region dead ahead, the outlet of atomization water pipe is arranged on the below of the outlet of casing cervical region atomization trachea.

On the above-described wind wheel face of cylinder, be designed with fan blade and lower fan blade, upper fan blade and lower fan blade all form by being no less than a slice blade, and the leaf position of the blade of upper fan blade and lower fan blade exists dislocation poor, be nonoverlapping, the position of two little mouths of pipe of described air inlet pipe outlet is corresponding with the blade of upper fan blade and lower fan blade respectively.

Operation principle of the present utility model, then the driving air pressure of head inputted to tubule from two by air inlet pipe exports, while two tubules are the blade of upper fan blade and the blade of lower fan blade of corresponding heads respectively, and the dislocation official post that the blade of the blade of upper fan blade and lower fan blade exists obtains on wind wheel carries out when allowing power, staggered stressed down, so the stressing conditions of wind wheel just there will be a half of blade stressed process from maximum weighted to minimum, lower blade will welcome beginning stressed from maximum weighted to minimum, this stressed maximum weighted that returns from maximum weighted to minimum of the wind wheel list of the single layer blade that force rate is traditional that is alternately subject to will be got well a lot to the stressing conditions of the stressed this circulation of minimum, thereby reached in the situation of dwindling wind wheel volume, promote the conversion output dynamics of wind wheel, reduced further the global design volume of dental handpiece.

The utility model has the advantages that simple in structurely, convenient manufacture and use, it can promote the conversion output dynamics of wind wheel in the situation that of wind wheel volume-diminished, thereby uses the global design volume-diminished of dental handpiece head, dentist is worked be convenient flexibly.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is sectional structure schematic diagram of the present utility model.

Fig. 3 is the decomposition texture schematic diagram of analysing and observe of the present utility model.

The specific embodiment

Shown in Fig. 1, Fig. 2, Fig. 3, the present invention is in casing 1, bonnet 2, rear pad 10, rear bearing 11, rear O type circle 12, wind wheel 13, fore bearing 14, front O type circle 15, front pad 16, main shaft 5, on the basis of clamping rod 17, is characterized in that in the interior rear pad 10 of casing 1, rear bearing 11, rear O type circle 12, wind wheel 13, fore bearing 14, front O type circle 15, front pad 16 be to be in turn arranged on from back to front in the cavity of casing 1 inside, described rear O type circle 12 is socket relations with rear bearing 11, and rear O type circle 12 is enclosed within on rear bearing 11; Described front O type circle 15 is socket relations with fore bearing 14, and front O type snare 15 is on fore bearing 14; Main shaft 5 is inserted in the axle center of rear bearing 11, wind wheel 13, fore bearing 14 fixing, and one end of main shaft 5 is to the place ahead projecting surface of casing 1 and be socketed with clamping rod 17; The outlet 7 of muffler is set in casing cervical region bottom, the entrance 9 of the entrance 6 of air inlet pipe, atomization trachea, the entrance 8 of atomization water pipe, the entrance 18 of muffler is arranged in casing 1 inner chamber and locates under wind wheel 13 left sides, the outlet 19 of air inlet pipe is divided into the output of two tubule mouths by main trachea and is arranged in casing 1 inner chamber and locates under wind wheel 13 the right, and the outlet 3 of atomization trachea is arranged on the face of cylinder of casing cervical region dead ahead, the outlet 4 of atomization water pipe is arranged on the below of the outlet of casing cervical region atomization trachea.On described wind wheel 13 faces of cylinder, be designed with fan blade and lower fan blade, upper fan blade and lower fan blade all form by being no less than a slice blade, and the leaf position of the blade of upper fan blade and lower fan blade exists dislocation poor, be nonoverlapping, the position of described 19 liang of mouths of pipe of air inlet pipe outlet is corresponding with the blade of upper fan blade and lower fan blade respectively.

Claims

1. a head for dental handpiece, it comprises casing, bonnet, rear pad, rear bearing, rear O type circle, wind wheel, fore bearing, front O type circle, front pad, main shaft, clamping rod, is characterized in that rear pad, rear bearing, rear O type circle, wind wheel, fore bearing, front O type circle, front pad are to be in turn arranged on from back to front casing inside in casing, described rear O type circle and rear bearing are socket relations, and rear O type snare is on rear bearing; Described front O type circle and fore bearing are socket relations, and front O type snare is on fore bearing; Main shaft is inserted on the axle center of rear bearing, wind wheel, fore bearing fixing, and its one end is protruded before casing and is socketed with clamping rod; In casing cervical region bottom, the outlet of muffler is set, the entrance of the entrance of air inlet pipe, atomization trachea, the entrance of atomization water pipe, the entrance of muffler is arranged in chassis cavity and locates under the wind wheel left side, the outlet of air inlet pipe is divided into the output of two tubule mouths by main trachea and is arranged in chassis cavity and locates under wind wheel the right, and the outlet of atomization trachea is arranged on the face of cylinder of casing cervical region dead ahead, the outlet of atomization water pipe is arranged on the below of the outlet of casing cervical region atomization trachea.

2. the head of a kind of dental handpiece according to claim 1, it is characterized in that being designed with fan blade and lower fan blade on the described wind wheel face of cylinder, upper fan blade and lower fan blade all form by being no less than a slice blade, and the leaf position of the blade of upper fan blade and lower fan blade exists dislocation poor, be nonoverlapping, the position of two little mouths of pipe of described air inlet pipe outlet is corresponding with the blade of upper fan blade and lower fan blade respectively.