JPH0422933Y2 - - Google Patents
Info
- Publication number
- JPH0422933Y2 JPH0422933Y2 JP15662984U JP15662984U JPH0422933Y2 JP H0422933 Y2 JPH0422933 Y2 JP H0422933Y2 JP 15662984 U JP15662984 U JP 15662984U JP 15662984 U JP15662984 U JP 15662984U JP H0422933 Y2 JPH0422933 Y2 JP H0422933Y2
- Authority
- JP
- Japan
- Prior art keywords
- push button
- retainer
- tool
- front cover
- dust
- 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
Links
- 239000000428 dust Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 1
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等の衝撃工具の先端工具
（以下工具と呼ぶ）を保持する工具保持装置のプ
ツシユボタンの動作に関するものである。[Detailed Description of the Invention] The present invention relates to the operation of a push button of a tool holding device that holds a tip tool (hereinafter referred to as a tool) of an impact tool such as an electric hammer.
従来の電気ハンマーの工具保持としては、工具
に設けた溝と工具保持部のＵ字穴によつて機体か
ら飛び出す工具の脱落防止と工具と被加工物から
引きはずす機能を有している。Ｕ字穴の工具保持
部（以下リテーナと呼ぶ）の回転係止をしている
プツシユボタンは、フロントカバのプツシユボタ
ン取付部穴にセツトスプリングを介して設けてい
る。この種の機体はコンクリート粉などの粉じん
の中で使用されるため、コンクリート粉などの粉
じんがプツシユボタン外径とフロントカバ穴のス
キマより入り込み、フロントカバ穴の中に堆積し
てプツシユボタンが押せなくなる等欠点があつ
た。 Conventional electric hammers have a tool holding function that uses a groove provided in the tool and a U-shaped hole in the tool holding portion to prevent the tool from falling out of the machine body and to remove it from the tool and workpiece. A push button that locks the U-shaped hole tool holding portion (hereinafter referred to as retainer) from rotating is provided in the push button mounting hole of the front cover via a set spring. Since this type of machine is used in dust such as concrete powder, dust such as concrete powder may enter through the gap between the outer diameter of the push button and the front cover hole and accumulate in the front cover hole, making it impossible to press the push button. There were flaws.
本考案の目的は、上記した従来技術の欠点をな
くし、この種の工具保持のプツシユボタンの動作
を向上させることである。 The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to improve the operation of this type of tool holding push button.
即ち、本考案はスプリングを介したプツシユボ
タンが上下することによりポンプ作用が発生する
ことに着目し、この作用を利用しフロントカバ穴
の中に堆積した粉じんが外部に排出されるように
フロントカバのプツシユボタン嵌合穴に工夫を加
えたものである。 That is, the present invention focuses on the fact that a pump action is generated when the push button moves up and down via a spring, and uses this action to open the front cover so that the dust accumulated in the front cover hole is discharged to the outside. The pushbutton fitting hole has been devised.
本考案の実施例を第１図、第２図により説明す
る。 An embodiment of the present invention will be explained with reference to FIGS. 1 and 2.
第１図は工具１に衝撃を与え被加工物をこわす
電気ハンマーの工具保持部である。工具を保持す
るリテーナ２はフロントカバ３とダンパ７を介し
てリテーナピン７で連結されていて、リテーナ２
の回転係止は、リテーナ２の突起１１と、フロン
トカバ３に穿設された嵌合穴１２に装着したプツ
シユボタン４の段部外径で接触して行う。プツシ
ユボタン４はスプリング５により外方に付勢さ
れ、抜け止めはリテーナ２の内側にてなされてい
る。リテーナ２の回動はプツシユボタン４を押し
リテーナ２の係止をはずしておこなう。フロント
カバ３のプツシユボタン嵌合穴１２には粉じん排
出口９を設けてある。以上の構成においてフロン
トカバ３のプツシユボタン嵌合穴１２に粉じん１
０が堆積しても、機体の振動によりプツシユボタ
ン４が上下してポンプ作用が生じ、粉じん１０を
排出口９より外部へ排出される。また固い粉じん
１０が付着した場合は、針金などを排出口９より
入れこまかくしてプツシユボタン４を押すことに
よりポンプ作用で粉じん１０を外部へ排出させる
ことがきでるようになり確実なプツシユボタン４
の動作を保証できる。 FIG. 1 shows a tool holder of an electric hammer that applies an impact to the tool 1 and breaks the workpiece. A retainer 2 that holds a tool is connected to a front cover 3 via a damper 7 with a retainer pin 7.
The rotation is locked by contact between the protrusion 11 of the retainer 2 and the outer diameter of the stepped portion of the push button 4 attached to the fitting hole 12 formed in the front cover 3. The push button 4 is urged outward by a spring 5, and is prevented from coming off inside the retainer 2. Rotation of the retainer 2 is performed by pressing the push button 4 and releasing the lock of the retainer 2. A dust outlet 9 is provided in the push button fitting hole 12 of the front cover 3. In the above configuration, dust 1 can be deposited in the push button fitting hole 12 of the front cover 3.
Even if dust 10 accumulates, the push button 4 moves up and down due to the vibration of the machine body, causing a pumping action, and the dust 10 is discharged to the outside through the discharge port 9. In addition, if hard dust 10 is attached, the dust 10 can be discharged to the outside by a pump action by carefully inserting a wire or the like into the discharge port 9 and pressing the push button 4, making it possible to securely push the push button 4.
operation can be guaranteed.
以上のように本考案によれば、フロントカバの
プツシユボタン嵌合穴に排出口を設けたので、フ
ロントカバ穴に堆積したコンクリート粉などの粉
じんを排出することができ、プツシユボタンの動
作を向上させることができる。 As described above, according to the present invention, since the outlet is provided in the push button fitting hole of the front cover, dust such as concrete powder accumulated in the front cover hole can be discharged, thereby improving the operation of the push button. I can do it.
第１図は本考案になる工具保持装置の一実施例
を示す縦断側面図、第２図は第１図のＡ−Ａ線断
面図である。図においては、１は工具、２はリテ
ーナ、３はフロントカバ、４はプツシユボタン、
５はセツトスプリング、６はリテーナピン、７は
ダンパ、８はロールピン、９は粉じん排出口、１
０は粉じん、１１は突起、１２は嵌合穴である。
FIG. 1 is a longitudinal sectional side view showing an embodiment of the tool holding device according to the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. In the figure, 1 is a tool, 2 is a retainer, 3 is a front cover, 4 is a push button,
5 is a set spring, 6 is a retainer pin, 7 is a damper, 8 is a roll pin, 9 is a dust outlet, 1
0 is dust, 11 is a protrusion, and 12 is a fitting hole.
Claims (1)
テーナをフロントカバに回動可能に連結するリテ
ーナピンを備え、前記先端工具の着脱をフロント
カバに設けたプツシユボタンを押し、前記リテー
ナを回転させて行う工具保持装置において、前記
プツシユボタンの嵌合する嵌合穴底部に、外部と
連通する排出口を穿設し、前記プツシユボタンの
操作に応じ、前記嵌合穴内部に外気が出入りする
よう構成して成る工具保持装置。 The tool holding device is equipped with a retainer that prevents the tip tool from coming off, and a retainer pin that rotatably connects the retainer to a front cover, and the tip tool is attached or detached by pressing a push button provided on the front cover and rotating the retainer. In the device, the tool holder is configured such that an outlet communicating with the outside is provided at the bottom of the fitting hole into which the push button fits, and outside air enters and exits the inside of the fitting hole in accordance with the operation of the push button. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15662984U JPH0422933Y2 (en) | 1984-10-16 | 1984-10-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15662984U JPH0422933Y2 (en) | 1984-10-16 | 1984-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6171379U JPS6171379U (en) | 1986-05-15 |
| JPH0422933Y2 true JPH0422933Y2 (en) | 1992-05-27 |
Family
ID=30714634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15662984U Expired JPH0422933Y2 (en) | 1984-10-16 | 1984-10-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422933Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5759342B2 (en) * | 2011-11-17 | 2015-08-05 | 株式会社マキタ | Hammer drill |
-
1984
- 1984-10-16 JP JP15662984U patent/JPH0422933Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6171379U (en) | 1986-05-15 |
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