JPH0243111U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案に係るコレツトチヤツクの一実
施例を示す半縦断面図、第２図は同上のコレツト
チヤツクの分解配置図、第３図Ａ，Ｂは球体（係
合体）と環状溝との位置関係を示す断面図である
。 １……チヤツク本体、２……貫通孔、３……コ
レツト、４……貫通孔のテーパ孔部、５……プル
ボルト、６……連結体、１２……穴部、１３……
鋼球（係合体）、２３……弾性部材。 Fig. 1 is a half-longitudinal cross-sectional view showing one embodiment of the collect chuck according to the present invention, Fig. 2 is an exploded layout view of the same collect chuck, and Fig. 3 A and B are the positions of the sphere (engaging body) and the annular groove. FIG. 3 is a cross-sectional view showing the relationship. DESCRIPTION OF SYMBOLS 1...Chuck body, 2...Through hole, 3...Collection, 4...Tapered hole part of through hole, 5...Pull bolt, 6...Connection body, 12...Hole part, 13...
Steel ball (engaging body), 23...Elastic member.

Claims (1)

【実用新案登録請求の範囲】 (1) チヤツク本体の軸方向に形成された貫通孔
の先端側テーパ孔部にコレツトを嵌挿し、該貫通
孔の後端側に挿入したプルボルトによつて、コレ
ツトを後方へ軸方向移動させて、工具をチヤツキ
ングするようにしたコレツトチヤツクにおいて、
プルボルトを軸方向に移動することなく回転のみ
可能に上記貫通孔に挿入し、該プルボルトとコレ
ツトとの間に、貫通孔内において回転することな
く軸方向にのみ移動可能な連結体を配置し、プル
ボルトの回転によつて連結体を直動させるよう連
結体の後部においてプルボルトと連係すると共に
、連結体の直動によつてコレツトをも一体的に直
動させるよう連結体の前部においてコレツトと連
係してなることを特徴とするコレツトチヤツク。 (2) チヤツク本体と、プルボルトの外周面に形
成された環状溝との間に、該環状溝に係合してプ
ルボルトの軸方向移動を阻止する係合体を介在さ
せている請求項１記載のコレツトチヤツク。 (3) プルボルトの軸方向移動を若干量許容する
よう前記環状溝の溝幅（軸方向幅）を前記係合体
の係合幅よりも若干大きく形成してなる請求項２
記載のコレツトチヤツク。 (4) 連結体とコレツトとの対向端面に、両端面
に弾接しうる弾性部材を介装している請求項１記
載のコレツトチヤツク。[Scope of Claim for Utility Model Registration] (1) A collet is inserted into the tapered tip end of a through hole formed in the axial direction of the chuck body, and a pull bolt inserted into the rear end of the through hole allows the collet to be removed. In the collect chuck, which chucks the tool by moving it backward in the axial direction,
A pull bolt is inserted into the through hole so that it can only rotate without moving in the axial direction, and a connecting body that can move only in the axial direction without rotating in the through hole is arranged between the pull bolt and the collet, The rear part of the connecting body is linked with the pull bolt so that the connecting body moves linearly by the rotation of the pull bolt, and the collet and the collet are connected at the front part of the connecting body so that the collet moves integrally with the linear movement of the connecting body. A collection feature that is characterized by being connected. (2) An engaging body is interposed between the chuck body and the annular groove formed on the outer circumferential surface of the pull bolt to engage with the annular groove and prevent the pull bolt from moving in the axial direction. Correct check. (3) The groove width (axial width) of the annular groove is formed to be slightly larger than the engagement width of the engagement body so as to allow a certain amount of axial movement of the pull bolt.
Correct check as stated. (4) The collet chuck according to claim 1, wherein an elastic member that can come into elastic contact with both end surfaces is interposed between the opposing end surfaces of the connecting body and the collet.