JPS6026931Y2 - impact tools - Google Patents
impact toolsInfo
- Publication number
- JPS6026931Y2 JPS6026931Y2 JP1981111508U JP11150881U JPS6026931Y2 JP S6026931 Y2 JPS6026931 Y2 JP S6026931Y2 JP 1981111508 U JP1981111508 U JP 1981111508U JP 11150881 U JP11150881 U JP 11150881U JP S6026931 Y2 JPS6026931 Y2 JP S6026931Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- needle
- axial direction
- needle bundle
- anvil
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/14—Control devices for the reciprocating piston
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Portable Nailing Machines And Staplers (AREA)
Description
【考案の詳細な説明】
本考案は金属或は石材等の加工物の表面をノ＼ツリ研削
する多針タガネを保持する改良型の針束受を有した衝撃
工具に関するものである。[Detailed Description of the Invention] The present invention relates to an impact tool having an improved needle bundle holder that holds a multi-needle chisel for grinding the surface of a workpiece such as metal or stone.
従来、多数のタガネを保持するホルダーは金属製で材料
費も高価であり、摩耗による部品交換は極めて不経済で
あり、その上、金属製ホルダーに設けた挿通孔に保持さ
れた針タガネの摩耗や破損が激しかった。Conventionally, holders that hold a large number of chisels are made of metal and the material cost is expensive, making it extremely uneconomical to replace parts due to wear.Furthermore, the needle chisels held in the insertion holes provided in the metal holders wear out. The damage was severe.
又、このホルダーを樹脂で形成した場合には、安価では
あるが衝撃運動による摩耗が激しく、耐久性に欠ける等
種々の欠点があった。Furthermore, when the holder is made of resin, although it is inexpensive, it suffers from severe wear due to impact motion and has various drawbacks, such as lack of durability.
本考案はかかる従来の欠点を除去し、衝撃運動による摩
耗及び破損を防止することを目的とする衝撃工具に係る
もので、針束受主体を硬質樹脂で形成し、当該主体を金
属筒体で被覆してなる針束受を採用したことを特徴とす
るものである。The present invention relates to an impact tool for the purpose of eliminating such conventional drawbacks and preventing wear and damage due to impact motion.The main body of the needle bundle receiver is made of hard resin, and the main body is made of a metal cylinder. It is characterized by the adoption of a covered needle bundle holder.
本考案を図面に示す実施例に基いて説明する。The present invention will be explained based on embodiments shown in the drawings.
１は先端に開口端２を有した筒体で、略中間内面に設け
たやや小径で環状の係止段部３から後端まで大径の作動
室４を形成し、且つ該筒体の後端外周に設けたやや大径
の外周に螺条部５を形成しである。Reference numeral 1 denotes a cylindrical body having an open end 2 at its tip, which forms a large-diameter working chamber 4 from a slightly small-diameter annular locking step 3 provided on the inner surface approximately in the middle to the rear end. A threaded portion 5 is formed on the outer periphery of a slightly larger diameter provided on the outer periphery of the end.
又、作動室４の後端に把手部を兼ねたハウジング６の一
端を挿入して固定リング４１で固着する。Further, one end of the housing 6, which also serves as a handle, is inserted into the rear end of the working chamber 4 and fixed with a fixing ring 41.
エアーの流入を制御する開閉弁７を内蔵すると共に、こ
の開閉弁を操作するレバー８は後端部９の後端に枢着さ
れ、この後端部９をハウジング６の後端に固着する。An on-off valve 7 for controlling the inflow of air is built in, and a lever 8 for operating this on-off valve is pivotally attached to the rear end of a rear end portion 9, and this rear end portion 9 is fixed to the rear end of the housing 6.
外部から供給されるエアーは供給口１０から開閉弁７を
介してハウジング６内に設けた供給路１１内に進入し、
このハウジングの中心部軸方向に設は且つ先端を開口し
たシリンダ１２の中間部に開口しである。Air supplied from the outside enters the supply path 11 provided in the housing 6 from the supply port 10 via the on-off valve 7,
The housing has an opening in the middle of a cylinder 12 which is disposed in the axial direction at the center and has an open end.
１４はこのシリンダ１２内に前後動可能に収容したラム
で、このラム１４の内部に、後端を開口させた盲孔１５
を設けると共に、この盲孔に連通する孔１６をラムの略
中央側壁に貫通させてあり、このラムの後端外周をシリ
ンダ１２に接する大径部１７を形成しである。Reference numeral 14 denotes a ram housed in the cylinder 12 so as to be movable back and forth. Inside the ram 14, there is a blind hole 15 whose rear end is open.
A hole 16 communicating with the blind hole is passed through the substantially central side wall of the ram, and a large diameter portion 17 is formed at the outer periphery of the rear end of the ram in contact with the cylinder 12.
２５は作動室４内へ軸方向に前後動可能に収容した針束
受で、この針束受２５とハウジング６との間にアンビル
２０を軸方向へ前後動可能に収容しである。A needle bundle receiver 25 is housed in the working chamber 4 so as to be movable back and forth in the axial direction, and an anvil 20 is accommodated between the needle bundle receiver 25 and the housing 6 so as to be movable back and forth in the axial direction.
２１は筒体１の壁面内部に形成した連通路で、先端は作
動室４の略先端内面に開口し、他端は前記供給路１１の
一端に連通しである。Reference numeral 21 denotes a communication passage formed inside the wall surface of the cylindrical body 1, the tip of which opens substantially on the inner surface of the tip of the working chamber 4, and the other end communicates with one end of the supply passage 11.
又、この作動室４の略中間部に設けた第１排気口２と、
作動室の後端に設けた第２排気口２３とはそれぞれ外部
に連通しである。In addition, a first exhaust port 2 provided approximately in the middle of the working chamber 4;
Each of the second exhaust ports 23 provided at the rear end of the working chamber communicates with the outside.
尚、３６は筒体１の外部に取付けた外筒である。Note that 36 is an outer cylinder attached to the outside of the cylinder 1.
この針束受２５は、中間部外周に段部２６を介して先端
側を、前記係止段部３に合致出来るような小径に形成し
、後部側は作動室４の内面に接するような大径部２７に
形成した環状の金属筒体２８で、略後端外周（第２図に
於ては上方）に環状凹溝２９を設け、且つこの環状凹溝
２９と段部３６との間に軸方向に平行な複数の小孔３０
，３０を形成しである。The needle bundle receiver 25 is formed with a step 26 on the outer periphery of the intermediate portion, and the tip side is formed with a small diameter that can match the locking step 3, and the rear side is formed with a small diameter so as to be in contact with the inner surface of the working chamber 4. An annular metal cylindrical body 28 is formed in the diameter portion 27, and an annular groove 29 is provided approximately on the outer periphery of the rear end (in the upper part in FIG. 2), and between this annular groove 29 and the stepped portion 36. A plurality of small holes 30 parallel to the axial direction
, 30 are formed.
又、針束受の内面後方（第２図に於いては上方）に環状
の係合部３１を形成し、この係合部と係止する係止部３
２を外面に有した硬質の合成樹脂からなる針束受主体３
３を係止し、この樹脂板に、略テーパー状の掛止部３４
を有した保持孔３５，３５を全面にわたって軸方向に形
成しである。Further, an annular engaging portion 31 is formed at the rear (upper side in FIG. 2) of the inner surface of the needle bundle receiver, and a locking portion 3 that locks with this engaging portion is formed.
Needle bundle receiving body 3 made of hard synthetic resin and having 2 on the outer surface.
3, and a substantially tapered hooking portion 34 is attached to this resin plate.
Holding holes 35, 35 having a diameter are formed in the axial direction over the entire surface.
この場合、第２図に示す如く、金属筒体２３内の上端よ
り針束受主体の上部をやや低く腰アンビル２０が直接衝
突しないようにして針束受主体の衝撃摩耗を防止しても
よいし、針束受主体の上部と金属筒の上部とを同一面に
してもよい。In this case, as shown in FIG. 2, the upper part of the needle bundle receiver body may be lowered a little lower than the upper end of the metal cylinder 23 so that the waist anvil 20 does not directly collide with the needle bundle receiver body to prevent impact wear on the needle bundle receiver body. However, the upper part of the needle bundle receiving body and the upper part of the metal tube may be on the same plane.
１８は針束受主体に設けた保持孔３５．３５に挿通ずる
針タガネで、後端に略テーパー状又は円盤状の頭部３９
を設けである。Reference numeral 18 denotes a needle chisel that is inserted into a holding hole 35.35 provided in the needle bundle receiver main body, and has a substantially tapered or disc-shaped head 39 at the rear end.
This is provided.
次に本考案の作用につき説明すると、レバー８を押し下
げて開閉弁７を開くと、外部からのエアーは供給口１０
を通ってハウジング６内に進入し、先ず、ラム１４を後
退させた後、盲孔１５内の圧力を高めて勢いよく該ラム
を前進させる。Next, to explain the operation of the present invention, when the lever 8 is pushed down and the on-off valve 7 is opened, air from the outside is supplied to the supply port 10.
It enters into the housing 6 through the ram 14, and after first retracting the ram 14, the pressure in the blind hole 15 is increased to move the ram forward vigorously.
作動室４の後端側には、閉口端側から針束受２５で押圧
されたアンビル２０が位置しており、前記ラム１４はこ
のアンビル２０を衝撃し、更に、アンビル２０が前進し
て針束受２５を衝撃して、該針束受に保持された針タガ
ネ３８の先端でハツリ作業等を行うものである。An anvil 20 that is pressed by a needle bundle receiver 25 from the closed end side is located on the rear end side of the working chamber 4. The ram 14 impacts this anvil 20, and the anvil 20 moves forward to release the needle. By impacting the bundle receiver 25, the tip of the needle chisel 38 held by the needle bundle receiver performs chiseling work.
針束受２５が前進して作動室４の先端に存する係止段部
３に係止すると、小孔３０．３０は連通路２１に連通し
、この連通路２１は供給路１１に連通しているので、外
部からのエアーにより、この針束受２５を後退させ、次
の打撃に備える。When the needle bundle receiver 25 advances and locks with the locking step 3 present at the tip of the working chamber 4, the small hole 30.30 communicates with the communication path 21, and this communication path 21 communicates with the supply path 11. Therefore, the needle bundle receiver 25 is moved backward by air from the outside in preparation for the next blow.
尚、針束受２５が後退し終ると、環状凹溝２９は第１排
気口２２に合致し、エアーは大気中に排出する。When the needle bundle receiver 25 finishes retracting, the annular groove 29 aligns with the first exhaust port 22, and the air is discharged into the atmosphere.
第２図に於て、金属筒体２８の上端と針束受主体３３の
上端との間に若干間隙ｌを設けると、アンビル２０は金
属筒体２５の上端にのみ衝突し、この針束受主体３３に
は衝撃しない。In FIG. 2, if a slight gap l is provided between the upper end of the metal cylindrical body 28 and the upper end of the needle bundle receiver main body 33, the anvil 20 collides only with the upper end of the metal cylindrical body 25, and this needle bundle receiver It does not shock the subject 33.
そのため、アンビル２０との衝突による針束受主体３３
の摩耗は防止できる。Therefore, the needle bundle receiving body 33 due to the collision with the anvil 20
Wear can be prevented.
又、保持孔３５の内壁は樹脂であり、該針束受主体に挿
通された針タガネは金属であるため、この挿通孔は摩耗
するが針タガネの摩耗を防止して耐久性を高めることが
出来る。Further, since the inner wall of the holding hole 35 is made of resin and the needle chisel inserted into the needle bundle receiving body is made of metal, this insertion hole is subject to wear, but the wear of the needle chisel can be prevented and durability can be increased. I can do it.
摩耗した該針束受主体３３は針束受の下方からハンマー
等でたたいて取り出すことが出来る。The worn needle bundle receiver main body 33 can be taken out by hitting it with a hammer or the like from below the needle bundle receiver.
又、金属筒体１と針束受主体３３との平面を同一にすれ
ば、アンビル２０との衝撃音を該針束受主体の樹脂で弱
める利点がある。Further, by making the planes of the metal cylinder 1 and the needle bundle receiving main body 33 the same, there is an advantage that the impact noise with the anvil 20 is weakened by the resin of the needle bundle receiving main body.
以上の如く、本考案は多数の針タガネを保持する針束受
を、アンビルによる衝撃運動の際に作動室と接する部分
を金属製で形成したので耐摩耗性を有すると共に、金属
材料の使用量が少くてすみ、又、この金属筒体の内部に
硬質樹脂製の針束受主体を取付けたことにより、多数の
針タガネを挿通する保持孔内壁も樹脂製となり、針タガ
ネの寿命を長くすることができるし、その上、この針束
受主体は金属筒体内に圧入固定しであるので、逆向きに
打撃力を加えれば取外すことが出来るので、針束受主体
の交換は容易であり、高価な金属材料の使用量が少なく
てすむため、コストダウンを図ることが出来る有益なる
特徴を有するものである。As described above, in the present invention, the part of the needle bundle holder that holds a large number of needle chisels that contacts the working chamber during impact movement by the anvil is made of metal, so it has wear resistance and reduces the amount of metal material used. In addition, by attaching the needle bundle receiving body made of hard resin inside this metal cylinder, the inner wall of the holding hole through which many needle chisels are inserted is also made of resin, extending the life of the needle chisels. Furthermore, since the needle bundle receiving body is press-fitted and fixed into the metal cylinder, it can be removed by applying a striking force in the opposite direction, making it easy to replace the needle bundle receiving body. It has the advantageous feature that it can reduce costs because it requires less expensive metal material.
図面は本考案の実施例を示したもので、第１図は全体の
一部欠截正面図、第２図はホルダーの一部欠截正面図、
第３図は同平面図、第４図は樹脂板の一部欠截正面図で
ある。
１は筒体、２は開口端、３は係止段部、４は作動室、６
はハウジング、４は開閉弁、９は後端部、１２はシリン
ダ、１４はラム、２０はアンビル、２５は針束受、２６
は段部、３３は針束受主体、３５は保持孔。The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view of the whole, FIG. 2 is a partially cutaway front view of the holder,
FIG. 3 is a plan view of the same, and FIG. 4 is a partially cutaway front view of the resin plate. 1 is a cylindrical body, 2 is an open end, 3 is a locking step, 4 is an operating chamber, 6
is a housing, 4 is an on-off valve, 9 is a rear end, 12 is a cylinder, 14 is a ram, 20 is an anvil, 25 is a needle bundle holder, 26
33 is a needle bundle receiving body, and 35 is a holding hole.
Claims (1)
設け、後方に作動室４を設けた筒体１の後部に、把手部
を兼ね且つ軸方向にシリンダ１２をを有したハウジング
６を固着し、ハウジングのシリンダ内にラム１４を軸方
向に前後動可能に収容すると共に、このラムと突合する
アンビル２０を該作動室内へ軸方向に摺動可能に収容し
１、このアンビル２０と前記開口端２の間の筒体１内部
には、針タガネを軸方向にガイドする針束受主体３３を
硬質樹脂で形成し、当該主体の、筒体１内面との接触面
を金属筒体で被覆した針束受２５を軸方向に往復動自在
に収容した衝撃工具。A cylindrical body 1 has an open end 2 at the front, a locking step 3 on the inner surface at the approximate center, and an operating chamber 4 at the rear, and has a cylinder 12 in the axial direction that also serves as a handle at the rear of the cylinder 1. A ram 14 is housed in the cylinder of the housing so as to be movable back and forth in the axial direction, and an anvil 20 that abuts this ram is housed in the working chamber so as to be slidable in the axial direction. Inside the cylinder 1 between the anvil 20 and the opening end 2, a needle bundle receiving main body 33 for guiding the needle chisel in the axial direction is formed of hard resin, and the contact surface of the main body with the inner surface of the cylinder 1 is An impact tool that houses a needle bundle receiver 25 covered with a metal cylinder so that it can freely reciprocate in the axial direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981111508U JPS6026931Y2 (en) | 1981-07-29 | 1981-07-29 | impact tools |
| KR2019820005307U KR880001300Y1 (en) | 1981-07-29 | 1982-07-06 | Impact tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981111508U JPS6026931Y2 (en) | 1981-07-29 | 1981-07-29 | impact tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5817981U JPS5817981U (en) | 1983-02-03 |
| JPS6026931Y2 true JPS6026931Y2 (en) | 1985-08-14 |
Family
ID=29905841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981111508U Expired JPS6026931Y2 (en) | 1981-07-29 | 1981-07-29 | impact tools |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6026931Y2 (en) |
| KR (1) | KR880001300Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6173892U (en) * | 1984-10-19 | 1986-05-19 |
-
1981
- 1981-07-29 JP JP1981111508U patent/JPS6026931Y2/en not_active Expired
-
1982
- 1982-07-06 KR KR2019820005307U patent/KR880001300Y1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| KR880001300Y1 (en) | 1988-04-02 |
| JPS5817981U (en) | 1983-02-03 |
| KR840000329U (en) | 1984-02-24 |
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