JPS5968518U

JPS5968518U - Dental handpiece with blower fan

Info

Publication number: JPS5968518U
Application number: JP16373082U
Authority: JP
Inventors: 崇介中西
Original assignee: 株式会社中西歯科器械製作所
Priority date: 1982-10-28
Filing date: 1982-10-28
Publication date: 1984-05-09

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案ハンドピースの実施例を示し、第１図は要
部縦断側面図、第２図は送風ファンのみの斜視図、第３
図は第１図Ａ−Ａ線縦断背面図、第４図は作動状態にお
ける斜視図。　　　　　・１・・・・・・外軸、１ａ・
・・・・・先端ノズル、１ｂ・・・・・・その先端開口
、２・・・・・・スピンドル、３・・・・・・チャック
、４・・・・・・隔壁筒、４ａ・・・・・・バー挿入孔
、５・・・・・・支持メタル、５ａ・・・・・・通風空
間、６・・・・・・送風ファン、７、・・・・・・軸受
、８・・・・・・シール保持部材、８ａ・・・・・・そ
の前面テーパー面、１０・・・・・・エアー導入孔。The drawings show an embodiment of the handpiece of the present invention, in which Fig. 1 is a vertical sectional side view of the main part, Fig. 2 is a perspective view of only the blower fan, and Fig. 3 is a perspective view of only the blower fan.
The figure is a vertical rear view taken along the line A-A in FIG. 1, and FIG. 4 is a perspective view in an operating state.・1...Outer shaft, 1a・
...Tip nozzle, 1b...Tip opening, 2...Spindle, 3...Chuck, 4...Partition tube, 4a... ...Bar insertion hole, 5... Support metal, 5a... Ventilation space, 6... Ventilation fan, 7, ... Bearing, 8. ... Seal holding member, 8a ... Its front tapered surface, 10 ... Air introduction hole.

Claims

[Scope of utility model registration request]

(1) Inside the tip nozzle 1a of the outer shaft 1, there is a partition tube 4 having a bar insertion hole 4a at the tip that encloses the tip of the spindle 2 with the chuck 3 attached, and a support metal 5 having ventilation spaces 5a at appropriate intervals. A blower fan 6 is fixed to the outer periphery of the spindle 2 immediately after the spindle 2, and the circumferential direction of the outer shaft 1 corresponds to between the blower fan 6 and the seal holding member 8 of the bearing 7 that supports the spindle 2. Air introduction hole 10 in the part
are arranged at appropriate intervals so that the air sucked from the air introduction hole 10 by the rotating action of the blower fan 6 flows out through the ventilation space 5a of the support metal 5 to the tip opening 1b of the tip nozzle 1a. A dental handpiece with a blower fan.

(2) A dental handpiece with a blower fan according to claim 1, in which the blower fan 6 has a multithread thread shape.

(3) Adjust the aperture of the tip opening 1b of the tip nozzle 1a to the partition tube 4.
A dental handpiece with a blower fan according to claim 1 or 2, which is larger than the bar insertion hole 4a of the patent application.

(4) With a blower fan according to any one of claims 1 to 3 of the claims 1 to 3, in which the front surface of the seal holding member 8 is formed into a tapered surface 8a for smooth and good air inflow. Dental handpiece.