JPH01107312U

JPH01107312U -

Info

Publication number: JPH01107312U
Application number: JP198888U
Authority: JP
Priority date: 1988-01-13
Filing date: 1988-01-13
Publication date: 1989-07-19
Also published as: JPH0417130Y2

Description

[Brief explanation of the drawing]

第１図は本考案によるコントラアング型歯科用
ハンドピースの外観図、第２図は本考案ハンドピ
ースの分解斜視図、第３図は本考案要部の分解斜
視図、第４図は第３図の交互回転機構部の説明図
、第５図は中間軸の１回転に対するハンドピース
刃先側の正、逆回転角度差の動作説明図を示す。１……ハンドピースの把持部、２……モータ回
転軸３の保護カバー部、４……ハンドピース先端
に装着されるリーマなどを回転させる回転軸５_１，５_２の保護カバー部、８……保護カバー５_１，
５_２の連結部の締め金具、１１……中間軸、１２
……ウオーム、１３……ウオームギア、１５……
回転軸３の端面のギア、１６，１７……中間軸１
１の上部と下部に設けた爪状突起。 Fig. 1 is an external view of the contra-ang type dental handpiece according to the invention, Fig. 2 is an exploded perspective view of the handpiece of the invention, Fig. 3 is an exploded perspective view of the main parts of the invention, and Fig. 4 is an exploded perspective view of the handpiece of the invention. FIG. 5 is an explanatory diagram of the alternate rotation mechanism shown in FIG. 5, and FIG. 5 is an explanatory diagram of the operation of the difference in forward and reverse rotation angles on the handpiece cutting edge side with respect to one rotation of the intermediate shaft. DESCRIPTION OF SYMBOLS 1... Grip part of the handpiece, 2... Protective cover part of the motor rotating shaft 3, 4... Rotating shaft ₅ for rotating a reamer etc. attached to the tip of the handpiece. , 5 ₂ protective cover portion, 8...protective cover 5 ₁ ,
5 Fastener for connection part of ₂ , 11... intermediate shaft, 12
... Worm, 13... Worm gear, 15...
Gears on the end face of the rotating shaft 3, 16, 17... intermediate shaft 1
Claw-like protrusions provided at the top and bottom of 1.

補正昭６３．５．１８図面の簡単な説明を次のように補正する。明細書第８頁第７行の「コントラアング型」を
「コントラアングル型」と補正する。明細書第８頁下から２行目の「１３……ウオー
ムギア」の次に「１４……突条」を追加挿入する
。Amendment May 18, 1983 The brief description of the drawing is amended as follows. "Contra-angular type" on page 8, line 7 of the specification is corrected to "contra-angular type.""14...protrusion" is additionally inserted next to "13... worm gear" on the second line from the bottom of page 8 of the specification.

Claims

[Scope of utility model registration request]

In a contra-angle type dental handpiece, the inner end 9 of the motor-side rotating shaft 3 and the near end 10 of the rotating shaft ₅₁ , which rotates the cutting edge of a reamer or the like attached to the tip of the handpiece, are connected to a hand interposed therebetween. Both rotating shafts 3 are connected to the piece gripping section 1.
_. A worm gear 13 is fitted and fixed from the lateral direction into the grip part 1 so as to be perpendicular to the axis, and a worm 12 is attached to the inner end side of the motor-side rotation shaft 3, and a worm gear 13 that engages with the worm 12 is attached to the intermediate shaft 11. A gear 15 consisting of radial protrusions 14 is provided on the front end surface of the rotating shaft ₅₁ on the distal end side of the handpiece, and protrusions of the gear are provided above and below the intermediate shaft 11 at the upper and lower parts of the surface of the gear 15. An alternately rotating dental handpiece comprising claw-like protrusions 16 and 17 at positions where they engage with 14.