JPH074131Y2 - Tool holding device - Google Patents
Tool holding deviceInfo
- Publication number
- JPH074131Y2 JPH074131Y2 JP2462389U JP2462389U JPH074131Y2 JP H074131 Y2 JPH074131 Y2 JP H074131Y2 JP 2462389 U JP2462389 U JP 2462389U JP 2462389 U JP2462389 U JP 2462389U JP H074131 Y2 JPH074131 Y2 JP H074131Y2
- Authority
- JP
- Japan
- Prior art keywords
- tool
- grip
- front cap
- holding device
- tool holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Percussive Tools And Related Accessories (AREA)
Description
【考案の詳細な説明】 本考案は電気ハンマードリル等のように、外かく表面に
工具の着脱を行う切換装置を有する穿孔工具の工具保持
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tool holding device for a drilling tool, such as an electric hammer drill, having a switching device for attaching and detaching the tool to the outer surface.
従来の工具保持装置としては、第３図に示す様に、グリ
ップ４の軸方向の制止は、ゴムで形成されたフロントキ
ャップ２の凸部を工具ホルダ３の凹溝部に係止させて行
っていた。打撃時の軸方向の振動によりグリップ４がグ
リップ４の慣性により軸方向に動きフロントキャップ２
の凸部が工具ホルダ３の凹溝部よりはずれ、脱落する。
又、脱落しにくくするため、工具ホルダの凹溝部を深く
したり、フロントキャップのゴム硬度を上げたりしてい
たため、組立てや分解が容易でなく、コスト高になると
いう欠点を生じていた。In the conventional tool holding device, as shown in FIG. 3, the grip 4 is axially restrained by engaging the convex portion of the front cap 2 formed of rubber with the concave groove portion of the tool holder 3. It was The front cap 2 moves the grip 4 in the axial direction by the inertia of the grip 4 due to the axial vibration at the time of impact.
Of the tool holder 3 disengages from the groove of the tool holder 3 and falls off.
Further, in order to make it difficult to fall off, the concave groove portion of the tool holder is deepened, and the rubber hardness of the front cap is increased, so that assembly and disassembly are not easy and there is a drawback that the cost is high.
本考案の目的は、上述した従来技術の欠点をなくし、こ
の種の工具着脱装置の確実性、信頼性を増し、併せて組
立、分解を簡便にすることである。An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, increase the reliability and reliability of this type of tool attaching / detaching device, and at the same time simplify the assembly and disassembly.
本考案は、軸方向の力を傾斜面で受けると、分力により
内側にも働くことに着目し、グリップの軸方向の動き
を、フロントキャップに作用する力を内側に付与するよ
うに、グリップ、フロントキャップの関係を工夫したも
のである。The present invention focuses on the fact that when an axial force is received on an inclined surface, it also acts on the inside due to the component force, so that the force acting on the front cap is given to the inside in the axial movement of the grip. , The front cap has been carefully designed.
先端工具１（以下工具と呼ぶ）を保持する工具ホルダ３
には、工具１の長溝に係合するニードルローラ５が保持
され、工具ホルダ３の外周を回動する。ニードルホルダ
６は外周にニードルホルダ６と係合し、回動操作を行う
グリップ４でおおわれ、内周にはニードルローラ５を保
持する工具ホルダ３を配置している。グリップ４の軸方
向の制止はフロントキャップ２の凸部が工具ホルダ３の
凹溝部に係合し、フロントキャップ２の外周傾斜面とグ
リップ４の内周傾斜面が接して制止している。以上の構
成において、グリップ４が打撃時の振動により軸方向に
動く、この時の力Ａはフロントキャップ２のＢ、Ｃの方
向に別れる。Ｂ方向の力が工具ホルダ３の凹溝部に働
き、フロントキャップは工具ホルダ２の凹溝部よりはず
れることがなくなる。さらに組立て、分解を容易にする
ため、ゴムの硬度を低くでき、又凹部溝を小さくでき
る。Tool holder 3 for holding a tip tool 1 (hereinafter referred to as a tool)
Holds the needle roller 5 that engages with the long groove of the tool 1, and rotates the outer circumference of the tool holder 3. The needle holder 6 is covered with a grip 4 that engages with the needle holder 6 on the outer circumference and performs a rotating operation, and a tool holder 3 that holds the needle roller 5 is arranged on the inner circumference. In order to restrain the grip 4 in the axial direction, the convex portion of the front cap 2 is engaged with the concave groove portion of the tool holder 3 and the outer peripheral inclined surface of the front cap 2 and the inner peripheral inclined surface of the grip 4 are in contact with each other. In the above configuration, the grip 4 moves in the axial direction by the vibration at the time of striking, and the force A at this time is divided into the directions B and C of the front cap 2. The force in the B direction acts on the concave groove portion of the tool holder 3, and the front cap is prevented from coming off the concave groove portion of the tool holder 2. Further, since the assembly and the disassembly are facilitated, the hardness of the rubber can be lowered and the groove of the recess can be reduced.
本考案によれば、グリップ内周とフロントキャップ外周
が傾斜して接することにより、フロントキャップのはず
れ防止が出来、併せて組立、分解が容易に行うことが出
来る。According to the present invention, the inner circumference of the grip and the outer circumference of the front cap incline and contact each other, so that the front cap can be prevented from coming off, and at the same time, the assembly and the disassembly can be easily performed.
第１図は本考案の一実施例で、要部のみを示す縦断面図
である。第２図は本考案における動作説明図である。第
３図は従来技術の縦断面図である。 図において、１は先端工具、２はフロントキャップ、３
は工具ホルダ、４はグリップ、５はニードルローラ、６
はニードルホルダ、７はフロントキャップ凸部、８は傾
斜部、９は打撃子、10は中間子である。FIG. 1 is an embodiment of the present invention and is a vertical sectional view showing only a main part. FIG. 2 is a diagram for explaining the operation of the present invention. FIG. 3 is a vertical sectional view of the prior art. In the figure, 1 is a tip tool, 2 is a front cap, 3
Is a tool holder, 4 is a grip, 5 is a needle roller, 6
Is a needle holder, 7 is a convex portion of the front cap, 8 is an inclined portion, 9 is a hitting element, and 10 is an intermediate element.
Claims (1)
工具の着脱をグリップの回動操作によって行い、前記グ
リップの軸方向の制止をフロントキャップによって行う
衝撃工具の工具保持装置において、前記グリップとフロ
ントキャプの制止面を傾斜させたことを特徴とする打撃
工具の工具保持装置。1. A tool holder for holding a tip tool,
In a tool holding device for an impact tool in which a tool is attached / detached by a turning operation of a grip and an axial direction of the grip is stopped by a front cap, a striking surface of the grip and a front cap is inclined. Tool holding device for tools.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2462389U JPH074131Y2 (en) | 1989-03-03 | 1989-03-03 | Tool holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2462389U JPH074131Y2 (en) | 1989-03-03 | 1989-03-03 | Tool holding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02114484U JPH02114484U (en) | 1990-09-13 |
| JPH074131Y2 true JPH074131Y2 (en) | 1995-02-01 |
Family
ID=31244629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2462389U Expired - Lifetime JPH074131Y2 (en) | 1989-03-03 | 1989-03-03 | Tool holding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074131Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004042735A1 (en) * | 2004-09-03 | 2006-03-09 | Robert Bosch Gmbh | Tool holder, adapter and system with a tool holder and an adapter |
-
1989
- 1989-03-03 JP JP2462389U patent/JPH074131Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02114484U (en) | 1990-09-13 |
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