JP2585720Y2 - Impact tool - Google Patents
Impact toolInfo
- Publication number
- JP2585720Y2 JP2585720Y2 JP1992027445U JP2744592U JP2585720Y2 JP 2585720 Y2 JP2585720 Y2 JP 2585720Y2 JP 1992027445 U JP1992027445 U JP 1992027445U JP 2744592 U JP2744592 U JP 2744592U JP 2585720 Y2 JP2585720 Y2 JP 2585720Y2
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- cylinder
- intermediate shaft
- flange portion
- gear
- 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
【0001】[0001]
【産業上の利用分野】本考案は、ハンマドリルのように
打撃運動を行なう打撃工具の揺動体に回転を伝達するク
ラッチの入切構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch on / off structure for transmitting rotation to a rocking body of a hammering tool such as a hammer drill.
【0002】[0002]
【従来の技術】従来の打撃工具で先端工具を被削材に押
付けるとシリンダが後退し、この移動に連動して往復動
が作動する構造において、中間軸の回転を往復動に変換
する揺動体とクラッチとの入り切りは、シリンダ軸上に
設けた回動しないプレートをクラッチの側面に係合する
位置に配置し、シリンダの後退時、このプレートが、回
転するクラッチを押し上げクラッチと揺動体を係合させ
る構造であった。これは、回動しないプレートと回転す
るクラッチとの間で摺動する為、摺動面の摩擦発熱、摩
耗が著しいものであった。2. Description of the Related Art When a tip tool is pressed against a workpiece by a conventional impact tool, a cylinder moves backward, and in a structure in which reciprocation is operated in conjunction with this movement, a swing which converts the rotation of an intermediate shaft into reciprocation. The on / off of the moving body and the clutch is performed by disposing a non-rotating plate provided on the cylinder shaft at a position to engage with the side surface of the clutch.When the cylinder is retracted, this plate pushes up the rotating clutch and connects the clutch and the oscillating body. It was a structure to be engaged. This is because sliding occurs between a non-rotating plate and a rotating clutch, so that frictional heat generation and wear on the sliding surface are remarkable.
【0003】[0003]
【考案が解決しようとする課題】従来の被削材に先端工
具を押付けると、シリンダ軸が後退し、往復動が作動す
る構造の打撃工具は、このクラッチを入り切りする部分
の構造が前述の様に、回転部品と回動しない部品とが接
触する為、特にクラッチを入れる時にこの部分の摩擦発
熱、摩耗が著しいという問題があった。本発明の目的
は、この摩擦発熱及び、摩耗を激減させ、寿命向上を図
ることである。When a tip tool is pressed against a conventional work material, the cylinder shaft retreats and a reciprocating motion is applied to the striking tool. As described above, since the rotating component and the non-rotating component come into contact with each other, there is a problem that the frictional heating and wear of this portion are remarkable especially when the clutch is engaged. An object of the present invention is to drastically reduce the frictional heat and wear and improve the life.
【0004】[0004]
【課題を解決するための手段】上記目的は、軸方向に移
動出来、中間軸と逆方向に回転するシリンダにフランジ
部を設け、揺動体にかみ合うクラッチのフランジ部、又
は側面とシリンダのフランジ部が直径方向で重合する位
置関係にすることにより、各々逆方向に回転する部材が
接触した時の摺動面には、摺動摩擦熱、摩耗が、激減す
ることにより達成される。SUMMARY OF THE INVENTION It is an object of the present invention to provide a cylinder which can be moved in the axial direction and which rotates in a direction opposite to the intermediate shaft, provided with a flange portion, and a flange portion of a clutch which engages with an oscillating body or a flange portion of a side surface and a cylinder. Are superposed in the diametrical direction, so that the sliding frictional heat and wear on the sliding surface when the members rotating in the opposite directions come into contact with each other are greatly reduced.
【0005】[0005]
【作用】上記の様に構成されたシリンダのフランジ部は
先端工具を被削材に押し当てる事により軸方向に後退
し、中間軸上のクラッチのフランジ部に接触しクラッチ
を後退させる。この時、中間軸の回転は、ピニオン、ギ
ヤでシリンダ軸に伝達し、シリンダを回転させる。すな
わち、前述シリンダのフランジ部とクラッチのフランジ
部は各々逆方向に回転しながら面接触し動作する。The flange portion of the cylinder constructed as described above retreats in the axial direction by pressing the tip tool against the workpiece, and comes into contact with the flange portion of the clutch on the intermediate shaft to retreat the clutch. At this time, the rotation of the intermediate shaft is transmitted to the cylinder shaft by a pinion and a gear to rotate the cylinder. That is, the above-described cylinder flange portion and clutch flange portion come into surface contact and operate while rotating in opposite directions.
【0006】[0006]
【実施例】本考案の実施例を図1、図2に示す。駆動軸
2の回転運動は、ファーストギヤ3を経て、中間軸4に
伝達される。更に中間軸4は、シリンダ6上に設けられ
たセカンドギヤ5を経てシリンダ6を回転し先端工具7
に常に回転を伝達している。前記中間軸4上には、回転
可能に遊合した揺動体8とクラッチ10が配設され、ク
ラッチ10は軸方向に移動可能で中間軸4と揺動体8を
鋼球9により係合自在に配設されている。シリンダ6
は、スプリング18によりスラストプレート11、スラ
ストベアリング12を介して、常時前方に付勢されてお
り、軸方向に移動可能に配設されている。スラストプレ
ート11は、前記クラッチ10の溝部10bに当接し、
前進時は、クラッチ10も同時に前進する。シリンダ6
には、シリンダ6と同心のフランジ部6aが、クラッチ
10のフランジ部10aと側面で重合する様、形成され
ている。クラッチ10を後退させると中間軸4と揺動体
8とが鋼球9で係合する構成である。この構造におい
て、図1で示すように先端工具7を被削材に押付ける
と、シリンダ6は、スプリング18を抗して、後方に移
動する。同時にシリンダ6のフランジ部6aが後退し、
シリンダ6のフランジ部6aと重合するクラッチ10の
フランジ部10aに当接し、クラッチ10を後退させ
る。中間軸4と揺動体8との間に配置した鋼球9が係合
した時にクラッチ10が後方一杯に後退し中間軸4の駆
動力は揺動体8に伝達され、ピストン14がピストンピ
ン13を経て往復動する。更にピストン14内に設けら
れた空気室15の空気バネにより打撃子16を追従さ
れ、中間子17を介して先端工具を打撃する。 先端工
具7を被削材から離すと図2に示すようにスプリング1
8によりスラストプレート11、スラストニードルベア
リング12、シリンダ6が前方に移動する。同時にスラ
ストプレート11がクラッチの溝部106に当接してい
る事からクラッチ10も前方に移動し、中間軸4と揺動
体8との係合を解除し、往復動及び打撃動作は停止する
構造である。1 and 2 show an embodiment of the present invention. The rotation of the drive shaft 2 is transmitted to the intermediate shaft 4 via the first gear 3. Further, the intermediate shaft 4 rotates the cylinder 6 via a second gear 5 provided on the cylinder 6 and
Is constantly transmitting rotation. An oscillating body 8 and a clutch 10 rotatably engaged with each other are disposed on the intermediate shaft 4, and the clutch 10 is movable in the axial direction so that the intermediate shaft 4 and the oscillating body 8 can be engaged with steel balls 9. It is arranged. Cylinder 6
Is constantly urged forward by a spring 18 via a thrust plate 11 and a thrust bearing 12, and is disposed so as to be movable in the axial direction. The thrust plate 11 contacts the groove 10b of the clutch 10,
When moving forward, the clutch 10 also moves forward at the same time. Cylinder 6
The flange 6a concentric with the cylinder 6 is formed so as to overlap with the flange 10a of the clutch 10 on the side surface. When the clutch 10 is retracted, the intermediate shaft 4 and the rocking body 8 are engaged with the steel balls 9. In this structure, when the tip tool 7 is pressed against the work material as shown in FIG. 1, the cylinder 6 moves rearward against the spring 18. At the same time, the flange portion 6a of the cylinder 6 retreats,
The clutch 10 is retracted by contacting the flange 10a of the clutch 10 which overlaps with the flange 6a of the cylinder 6. When the steel ball 9 disposed between the intermediate shaft 4 and the rocking body 8 is engaged, the clutch 10 is fully retracted rearward, the driving force of the intermediate shaft 4 is transmitted to the rocking body 8, and the piston 14 moves the piston pin 13. Reciprocating through. Further, the striking element 16 is followed by an air spring of an air chamber 15 provided in the piston 14, and strikes the tip tool via the intermediate element 17. When the tip tool 7 is separated from the work material, the spring 1
8, the thrust plate 11, the thrust needle bearing 12, and the cylinder 6 move forward. At the same time, since the thrust plate 11 is in contact with the groove 106 of the clutch, the clutch 10 also moves forward, disengages the intermediate shaft 4 from the rocking body 8, and stops the reciprocating motion and the striking operation. .
【0007】[0007]
【考案の効果】本考案によれば、打撃工具を被削材に押
し付けると同時にシリンダが後退しシリンダに設けたフ
ランジ部でクラッチのフランジ部側面を、回転摺動しな
がら当接し後退させ、クラッチを入れる構造にすること
により、シリンダとクラッチの摺動面の発熱、及び摩耗
を著しく低減し、製品の大巾な寿命向上を図ることがで
きる。According to the present invention, the impact tool is pressed against the work material, and at the same time, the cylinder retreats, and the flange portion of the cylinder is brought into contact with the flange portion side while rotating and sliding, thereby retreating the clutch. With such a structure, heat generation and wear on the sliding surfaces of the cylinder and the clutch can be significantly reduced, and the life of the product can be greatly improved.
【図1】 本発明になる打撃工具のクラッチの入切構造
のクラッチが入った状態の一実施例を示す断面図であ
る。FIG. 1 is a cross-sectional view showing an embodiment in a state where a clutch having an on-off structure of a clutch of a hammer tool according to the present invention is engaged.
【図2】 クラッチが切れた状態を示す断面図である。FIG. 2 is a sectional view showing a state in which a clutch is disengaged.
1はハウジング、2は駆動軸、3はファーストギヤ、4
は中間軸、6はシリンダ、6aはシリンダのフランジ
部、7は先端工具、8は揺動体、10はクラッチ10a
はクラッチのフランジ部、14はピストン、18はスプ
リングである。1 is a housing, 2 is a drive shaft, 3 is a first gear, 4
Is an intermediate shaft, 6 is a cylinder, 6a is a flange portion of a cylinder, 7 is a tip tool, 8 is a rocking body, 10 is a clutch 10a.
Is a flange portion of the clutch, 14 is a piston, and 18 is a spring.
Claims (1)
ング内に駆動軸の回転をファーストギヤを介して中間軸
に伝達し、該中間軸上に回転可能に遊合し、ピストンを
往復駆動する揺動体と、制限的に軸方向に移動可能でス
プリングにより前方に付勢されたシリンダと揺動体に回
転力を伝達するクラッチが、先端工具の軸方向移動とシ
リンダの移動と連動して作動する構造において、前記シ
リンダに対して一体で且つ前記クラッチに直径方向で重
合する位置にフランジ部を設けたことを特徴とする打撃
工具。1. A housing forming a main body frame, and a rotation of a drive shaft transmitted to an intermediate shaft through a first gear into the housing via a first gear, rotatably mating on the intermediate shaft, and reciprocatingly driving a piston. A structure in which a moving body, a cylinder that is limitedly movable in the axial direction and is urged forward by a spring, and a clutch that transmits rotational force to the rocking body are operated in conjunction with the axial movement of the tool bit and the movement of the cylinder. In the above,
Integral to the cylinder and diametrically weighted to the clutch
A striking tool characterized in that a flange portion is provided at a position where they are fitted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992027445U JP2585720Y2 (en) | 1992-04-24 | 1992-04-24 | Impact tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992027445U JP2585720Y2 (en) | 1992-04-24 | 1992-04-24 | Impact tool |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0585575U JPH0585575U (en) | 1993-11-19 |
JP2585720Y2 true JP2585720Y2 (en) | 1998-11-25 |
Family
ID=12221319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1992027445U Expired - Lifetime JP2585720Y2 (en) | 1992-04-24 | 1992-04-24 | Impact tool |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2585720Y2 (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02311280A (en) * | 1989-05-25 | 1990-12-26 | Matsushita Electric Works Ltd | Hammer drill |
-
1992
- 1992-04-24 JP JP1992027445U patent/JP2585720Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0585575U (en) | 1993-11-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1808272B1 (en) | Power tool comprising a torque limiter | |
US4280359A (en) | Rotary cam drive for impact tool | |
JPH04506036A (en) | Drill hammer or impact hammer with clutch in the impact device drive | |
US5025869A (en) | Impact drill | |
JP3098963B2 (en) | Switching mechanism for rotating tools | |
US4366869A (en) | Hammer drill | |
US20060266535A1 (en) | Hammer | |
JP3369844B2 (en) | Rotary impact tool with idle hit prevention mechanism | |
JP2585720Y2 (en) | Impact tool | |
JP2570110Y2 (en) | Impact tool | |
JPH02284881A (en) | Hammer drill | |
GB2160810A (en) | Hammer drill | |
JP2585747Y2 (en) | Impact tool | |
JPH06262413A (en) | Power switching mechanism in rotary tool | |
US6814153B2 (en) | Hand power tool | |
JP2537001Y2 (en) | Impact tool | |
JP2558319Y2 (en) | Impact tool | |
JPH0585576U (en) | Hammer tool | |
JP2539835Y2 (en) | Electric hammer | |
JPH04128183U (en) | impact tool | |
JPH0431801B2 (en) | ||
JPH0751263Y2 (en) | Hammer tool | |
JPS5835423Y2 (en) | Power hammer drill switching mechanism | |
JPH0653327B2 (en) | Hammer drill | |
JPH04343682A (en) | Hammering tool |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980818 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R323531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070918 Year of fee payment: 9 |