JPH07171770A - Reaction reducing mechanism for driver - Google Patents
Reaction reducing mechanism for driverInfo
- Publication number
- JPH07171770A JPH07171770A JP31827393A JP31827393A JPH07171770A JP H07171770 A JPH07171770 A JP H07171770A JP 31827393 A JP31827393 A JP 31827393A JP 31827393 A JP31827393 A JP 31827393A JP H07171770 A JPH07171770 A JP H07171770A
- Authority
- JP
- Japan
- Prior art keywords
- compressed air
- moving member
- screw
- movable piston
- drive bit
- 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.)
- Granted
Links
Landscapes
- Portable Nailing Machines And Staplers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は圧縮空気を動力源とする
打込機、特に圧縮空気ねじ締め機の反動低減機構に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recoil reduction mechanism of a driving machine using compressed air as a power source, and more particularly, a compressed air screw tightening machine.
【０００２】[0002]
【従来の技術】従来の圧縮空気ねじ締め機には、特開平
１−４５５７９号がある。その構造は、ねじを回すドラ
イブビットと、該ドライブビットを回転駆動するエアモ
ータと、ドライブビットを圧縮空気により下降させるピ
ストン部からなる。2. Description of the Related Art As a conventional compressed air screw tightening machine, there is JP-A-1-45579. The structure is composed of a drive bit that rotates a screw, an air motor that rotationally drives the drive bit, and a piston portion that lowers the drive bit by compressed air.
【０００３】[0003]
【発明が解決しようとする課題】従来の圧縮空気ねじ締
め機では、ドライブビットが回転しながら下降し、ねじ
の溝と嵌合した後、更にねじが被締付材に突き当たるこ
とによって、圧縮空気は更にピストンを下方に押圧しよ
うとするが、ねじが被締付材に突き当たっているのでド
ライブビットがなかなか下方に移動できず、本体が浮き
上がる方向に反動が生じる。本体が浮き上がってしまう
と、ねじと嵌合していたドライブビットがねじ溝より外
れてしまい、ねじが締め付けられないという問題があっ
た。In the conventional compressed air screw tightening machine, the drive bit rotates while descending, and after fitting into the groove of the screw, the screw further abuts on the material to be tightened, whereby compressed air is compressed. Tries to push the piston further downward, but the screw hits the material to be tightened, so the drive bit cannot be easily moved downward, and a reaction occurs in the direction in which the main body floats. When the main body floats up, the drive bit that was fitted with the screw comes out of the screw groove, and the screw cannot be tightened.
【０００４】上記問題点を解決するために、実開昭６０
−４７０７５号公報における打込機の反動を低減する機
構を用いる方法があるが、これはピストン上部と下部の
空気圧力差をなくし、打撃時の反動を低減する方法であ
る。すなわちピストン下部に圧縮空気を流入するため、
シリンダとハウジング間に空気室を設ける必要がある。
本体に作用する反動は低減できるが、容積、形状が大き
くなり、重量的に重くなる。またピストン下部に圧縮空
気が流れ込むため、空気消費量が多くなるという新たな
問題点を生じるものであった。本発明の目的は、上記し
た従来の問題点を解決し、操作性の良い安価な打込機の
反動低減機構を提供することである。In order to solve the above-mentioned problems, the actual development sho 60
There is a method of using the mechanism for reducing the recoil of the driving machine in Japanese Patent Publication No. 47075-, but this is a method for eliminating the recoil at the time of impact by eliminating the air pressure difference between the upper and lower parts of the piston. That is, because compressed air flows into the bottom of the piston,
It is necessary to provide an air chamber between the cylinder and the housing.
Although the recoil that acts on the main body can be reduced, the volume and shape become large and the weight becomes heavy. In addition, since compressed air flows into the lower part of the piston, a new problem arises that the air consumption increases. An object of the present invention is to solve the above-mentioned conventional problems and provide an inexpensive recoil reduction mechanism for a driving machine with good operability.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成は、本発
明においては、止具を打撃するドライブビットを下端に
有する移動部材を、弾性体を介して可動ピストンに装着
することにより達成される。The above object is achieved in the present invention by mounting a moving member having a drive bit at the lower end for hitting a stopper on a movable piston through an elastic body. .
【０００６】[0006]
【作用】上記のように構成された反動低減機構は、止具
の反力で本体が浮き上がろうとしたとき、可動ピストン
がスプリングの付勢力に抗し、ドライブビット側に摺動
することにより、本体に反動が伝わることがなくなり、
止具を充分に打ち込めるようになる。With the reaction reducing mechanism configured as described above, the movable piston resists the biasing force of the spring and slides toward the drive bit side when the body tries to float up due to the reaction force of the stopper. , The reaction will not be transmitted to the main body,
You will be able to drive the fasteners sufficiently.
【０００７】[0007]
【実施例】本発明を圧縮空気ねじ締め機に採用した一実
施例を図１に示す。ねじを締めるドライブビット９の動
力源である圧縮空気を、トリガ５の操作により制御され
るヘッドバルブ２４がねじ締め機本体上部に設けられて
いる。本体の枠を形成するハウジング３０と、該ハウジ
ング３０内に回転可能に支持されたエアモータ１３と、
エアモータ１３の軸中心部に、該エアモータ１３のロー
タ１６から構成されるシリンダ２を設ける。該シリンダ
２内にはバルブピストン２１、スプラインシャフト８を
有する移動部材７が一体的に上下に往復動可能でかつ前
記エアモータ１３の回転駆動力が移動部材７に伝達され
るよう移動部材７の下部のスプラインシャフト８下部外
周がボールスプライン１４により保持されている。FIG. 1 shows an embodiment in which the present invention is applied to a compressed air screw tightener. A head valve 24, which controls compressed air as a power source of the drive bit 9 for tightening the screw by operating the trigger 5, is provided on the upper portion of the screw tightener main body. A housing 30 forming a frame of the main body, an air motor 13 rotatably supported in the housing 30,
A cylinder 2 composed of a rotor 16 of the air motor 13 is provided at the center of the shaft of the air motor 13. In the cylinder 2, a moving member 7 having a valve piston 21 and a spline shaft 8 can integrally reciprocate up and down and a lower portion of the moving member 7 so that the rotational driving force of the air motor 13 is transmitted to the moving member 7. The outer periphery of the lower portion of the spline shaft 8 is held by a ball spline 14.
【０００８】前記スプラインシャフト８の下端は、クラ
ッチ部１５と係合しており、前記回転及び上下駆動動力
をクラッチ部１５を介してドライブビット９に伝達す
る。また本発明では、スプラインシャフト８上に設けた
肩部２２に一端がスプリング４によって係止されると共
に、他端がバルブピストン２１のバルブ端２３に押圧さ
れ、更にスプラインシャフト８上を上下に摺動可能に摺
動可能な可動ピストン３を設ける。The lower end of the spline shaft 8 is engaged with the clutch portion 15 and transmits the rotational and vertical drive power to the drive bit 9 via the clutch portion 15. Further, in the present invention, one end is locked by the spring 4 on the shoulder portion 22 provided on the spline shaft 8 and the other end is pressed by the valve end 23 of the valve piston 21, and further slides up and down on the spline shaft 8. A movable piston 3 which is slidably movable is provided.
【０００９】次に、反動低減機構の動作について説明す
る。本体を被締付材１００に押し付けると、プッシュレ
バー１２が上方に移動し、トリガ部５が動作可能とな
る。トリガ部５を操作すると、ヘッドバルブ２４の上面
にある蓄圧室６内の圧縮空気を大気中に排出し減圧させ
ることによりヘッドバルブ２４は上方に移動し、蓄圧室
１１から入気路２０を介して可動ピストン３、及びエア
モータ１３に圧縮空気を供給する。エアモータ１３に供
給された圧縮空気はロータ１６を回転させた後大気に排
出される。また可動ピストン３に供給された圧縮空気
は、移動部材７を下方に移動させ、ねじ１０をバンド１
７から離脱させ被締付材１００に前記ねじ１０を締め付
ける。前記移動部材７が図３の位置まで降下し、ねじ１
０が石膏ボード３１を突き抜け木材３２に入り込む際の
抵抗により、移動部材７は急激に降下速度が減少する。Next, the operation of the reaction reducing mechanism will be described. When the main body is pressed against the tightened material 100, the push lever 12 moves upward, and the trigger portion 5 becomes operable. When the trigger unit 5 is operated, the compressed air in the pressure accumulating chamber 6 on the upper surface of the head valve 24 is discharged into the atmosphere to reduce the pressure, so that the head valve 24 moves upward, and the pressure accumulating chamber 11 passes through the air intake passage 20. And supplies compressed air to the movable piston 3 and the air motor 13. The compressed air supplied to the air motor 13 is discharged to the atmosphere after rotating the rotor 16. The compressed air supplied to the movable piston 3 moves the moving member 7 downward so that the screw 10 moves the band 1
7 and the screw 10 is fastened to the tightened material 100. The moving member 7 descends to the position shown in FIG.
Due to the resistance when 0 penetrates the plaster board 31 and enters the wood 32, the moving member 7 rapidly decreases its descending speed.
【００１０】この状態で圧縮空気が、バルブピストン２
１を下方へ押圧して、移動部材７を更に下方に押圧しよ
うとするが、移動部材７の一端に設けられたドライブビ
ット９に捩じ込まれているねじ１０が木材３２から受け
る抵抗により移動できなくなる。そのためバルブピスト
ン２１上の圧縮空気により本体が持ち上がろうとする
が、本発明では、スプラインシャフト８上の肩部２２と
可動ピストン３間に設けたスプリング４が圧縮して可動
ピストン３が下降するため、圧縮空気ねじ締め機１は被
締付材１００から浮き上がらず、ねじ１０は被締付材１
００の面位置に締め付けられる。In this state, the compressed air becomes the valve piston 2
1 is pushed downward to push the moving member 7 further downward, but the screw 10 screwed into the drive bit 9 provided at one end of the moving member 7 is moved by the resistance received from the wood 32. become unable. Therefore, the main body tends to be lifted by the compressed air on the valve piston 21, but in the present invention, the spring 4 provided between the shoulder portion 22 on the spline shaft 8 and the movable piston 3 is compressed and the movable piston 3 descends. Therefore, the compressed air screw tightener 1 does not float up from the tightened material 100, and the screw 10 is the tightened material 1
It is clamped in the 00 position.
【００１１】上記実施例においては、圧縮空気ねじ締め
機に採用した例を示したが、通常一般の釘打ち機等に用
いても同様の効果を奏することが可能である。In the above-mentioned embodiment, the example adopted in the compressed air screw tightening machine is shown, but the same effect can be obtained even if it is used in a general nail driving machine or the like.
【００１２】[0012]
【発明の効果】本発明によれば、移動部材に圧縮空気に
よって駆動される可動ピストンを、弾性体を介して装着
したので、コンパクトな形状でシリンダ内に収納できる
と共に反動が低減され、打込機本体が被締付材より浮き
上がることがなく、止具を面位置に打込むことが可能と
なり操作性が向上する。According to the present invention, since a movable piston driven by compressed air is attached to a moving member via an elastic body, it can be housed in a cylinder in a compact shape and a recoil is reduced, and a driving force is set. The machine body does not float above the material to be tightened, and the fastener can be driven into the surface position, improving operability.
【図１】 本発明の反動低減機構の一実施例を示す断面
図。FIG. 1 is a sectional view showing an embodiment of a reaction reducing mechanism of the present invention.
【図２】 本発明の要部を示す図１の一部拡大断面図。FIG. 2 is a partially enlarged sectional view of FIG. 1 showing a main part of the present invention.
【図３】 図１の動作状態を示す断面図。FIG. 3 is a cross-sectional view showing an operating state of FIG.
【図４】 図１のねじ締付終了後の状態を示す断面図。FIG. 4 is a cross-sectional view showing a state after the screw tightening of FIG. 1 is completed.
１は圧縮空気ねじ締め機、２はシリンダ、３は可動ピス
トン、４はスプリング、７は移動部材、８はスプライン
シャフト、３０はハウジングである。1 is a compressed air screw tightener, 2 is a cylinder, 3 is a movable piston, 4 is a spring, 7 is a moving member, 8 is a spline shaft, and 30 is a housing.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大森 康希 茨城県勝田市武田1060番地 日立工機株式 会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuki Omori 1060 Takeda, Katsuta City, Ibaraki Prefecture Hitachi Koki Co., Ltd.
Claims (2)
ンと、該可動ピストンに弾性体を介して装着され、下端
に止具を打撃するドライブビットを有する移動部材とを
備えたことを特徴とする打込機の反動低減機構。1. A striking mechanism comprising: a movable piston machined by compressed air; and a moving member mounted to the movable piston via an elastic body and having a drive bit at its lower end for striking a stopper. Recoil reduction mechanism for embedded machines.
縮空気によって回転するエアモータと、該エアモータ内
に上下動可能に支持されると共に、エアモータと共に回
転する如く取り付けられ、ドライブビットを駆動する移
動部材を有し、該移動部材に圧縮空気によって駆動され
る可動ピストンを、弾性体を介して装着したことを特徴
とする打込機の反動低減機構。2. An air motor rotatably supported in the housing and rotated by compressed air, and a moving member which is vertically movably supported in the air motor and is mounted so as to rotate together with the air motor and drives the drive bit. And a movable piston driven by compressed air to the moving member via an elastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31827393A JP3561283B2 (en) | 1993-12-17 | 1993-12-17 | Recoil reduction mechanism of compressed air screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31827393A JP3561283B2 (en) | 1993-12-17 | 1993-12-17 | Recoil reduction mechanism of compressed air screwdriver |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003052427A Division JP2003260671A (en) | 2003-02-28 | 2003-02-28 | Method and device of screwing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07171770A true JPH07171770A (en) | 1995-07-11 |
| JP3561283B2 JP3561283B2 (en) | 2004-09-02 |
Family
ID=18097369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31827393A Expired - Lifetime JP3561283B2 (en) | 1993-12-17 | 1993-12-17 | Recoil reduction mechanism of compressed air screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3561283B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0820839A1 (en) * | 1996-02-09 | 1998-01-28 | Kanematsu-Nnk Corporation | Screw driving method and screw driving device |
| JP2016209941A (en) * | 2015-04-30 | 2016-12-15 | 日立工機株式会社 | Driving machine |
-
1993
- 1993-12-17 JP JP31827393A patent/JP3561283B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0820839A1 (en) * | 1996-02-09 | 1998-01-28 | Kanematsu-Nnk Corporation | Screw driving method and screw driving device |
| EP0820839A4 (en) * | 1996-02-09 | 1998-04-22 | Kanematsu Nnk Corp | Screw driving method and screw driving device |
| US5862724A (en) * | 1996-02-09 | 1999-01-26 | Arata; Ken | Screw driving method and screw driving apparatus |
| JP2016209941A (en) * | 2015-04-30 | 2016-12-15 | 日立工機株式会社 | Driving machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3561283B2 (en) | 2004-09-02 |
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