JP3969194B2 - Nailer with air duster - Google Patents

Nailer with air duster Download PDF

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Publication number
JP3969194B2
JP3969194B2 JP2002160101A JP2002160101A JP3969194B2 JP 3969194 B2 JP3969194 B2 JP 3969194B2 JP 2002160101 A JP2002160101 A JP 2002160101A JP 2002160101 A JP2002160101 A JP 2002160101A JP 3969194 B2 JP3969194 B2 JP 3969194B2
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Japan
Prior art keywords
pressure
valve
compressed air
air
nozzle
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Expired - Lifetime
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JP2002160101A
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Japanese (ja)
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JP2004001136A (en
Inventor
禎紀 石沢
義博 仲野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koki Holdings Co Ltd
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Hitachi Koki Co Ltd
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Filing date
Publication date
Application filed by Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to JP2002160101A priority Critical patent/JP3969194B2/en
Priority to DE60320891T priority patent/DE60320891D1/en
Priority to EP03253373A priority patent/EP1366863B1/en
Priority to TW092114547A priority patent/TWI247651B/en
Priority to US10/446,790 priority patent/US6783050B2/en
Publication of JP2004001136A publication Critical patent/JP2004001136A/en
Priority to US10/902,776 priority patent/US7322505B2/en
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Publication of JP3969194B2 publication Critical patent/JP3969194B2/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00Hand-held nailing tools; Nail feeding devices
    • B25C1/04Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/047Mechanical details

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は粉塵、木屑等を除去する清掃作業のために圧縮空気を自在に放出するエアダスタ付き釘打機に関するものである。
【0002】
【従来の技術】
釘打作業と清掃作業が容易に行えるエアダスタ機構を備えているエアダスタ付き釘打機を特開平10−109280号で提案した。清掃作業を行う箇所にノズルを向け、釘打機本体を保持した手で放出弁の操作子を押すと、蓄圧室内の圧縮空気がノズル先端から急激に放出され、粉塵、木屑等が除去される。
【0003】
次に図1、図2、図7を参照してエアダスタ機構について説明する。ボデー2の上側に主弁上室6及び蓄圧室3の一部を構成するエキゾーストカバー21がボルト等によって締結されている。エキゾーストカバー21には、釘打機1を保持した手の親指もしくは人差し指の可動範囲内に放出弁22の操作子23が打込み制御用の制御弁4とは別に独立して設けられ、エキゾーストカバー21の上方凹部25には圧縮空気を放出するノズル26が設けられている。
【0004】
蓄圧室3と放出弁22は空気通路27を介して連通し、放出弁22とノズル26は空気通路29を介して連通している。放出弁22には、大気と空気通路29を常時遮断するOリング34、操作子23の非操作時及び操作時に空気通路27と空気通路29を遮断及び連通させるOリング35が設けられている。
【0005】
放出弁22は、バルブブッシュ36の軸方向に摺動し、Oリング35とバルブブッシュ36がシールするシール面の直径φCが、Oリング34とバルブブッシュ36がシールするシール面の直径φDより若干大きく設定され、スプリング37の付勢力と共に圧縮空気の圧力で放出弁22は操作子23側に常時付勢されている。
【0006】
【発明が解決しようとする課題】
釘を打込む動力源とエアダスタの動力源は、共に蓄圧室3に蓄えられた圧縮空気であり、必要とする圧力が異なる場合、高い方に合わせなければならなかった。特に高圧釘打機の場合、使用圧力が0.98〜2.45Mpaと高く、エアダスタは一般圧力の0.39〜0.83Mpaと低く設定されているため、釘打機に合わせて蓄圧室3内を高圧にすると、ノズル26から圧縮空気が高い圧力のまま放出され、粉塵、木屑等を周囲に巻き上げすぎてしまったり、反力で釘打機1が動いたり、振り回されたりして操作しにくくなったり、ノズル26から発生する噴射音が大きくなってしまうという問題があった。また、ノズル26や放出弁22の圧縮空気の通過面積を小さくして抵抗を増して放出される圧縮空気の圧力を小さくしようとすると、ノズル26から高い周波数の噴射音が発生してしまう。
【0007】
本発明の目的は、上記した問題をなくし、ノズルから放出される圧力を蓄圧室の圧縮空気の圧力より小さくすることである。
【0008】
【課題を解決するための手段】
上記目的は、蓄圧室とノズルの間に圧縮空気を減圧する減圧機構を設けることにより達成される。
【0009】
【発明の実施の形態】
以下本発明の一実施形態を図3を参照して説明するが、釘打機の全体構成及び動作等を図1も参照して説明する。
図示しない圧縮機から図示しないエアホースを介して供給される圧縮空気は、ボデー2の蓄圧室3内に蓄積される。圧縮空気は制御弁4、空気通路5を介して主弁上室6に入り、主弁7をシリンダ8上面に押し付ける。この状態では主弁7とシリンダ8の上面は密閉されており、圧縮空気はシリンダ8内に入らないのでピストン9は上死点を維持する。トリガレバー10はセフティアーム11の操作と協働し、引いたり戻したりすることにより制御弁4を開閉させ、主弁上室6を蓄圧室3または大気とに選択的に連通させる。
【0010】
ピストン9にはドライバブレード12が一体で連結されている。シリンダ8の中間及び下部には各々中間穴13及び下部穴14が形成され、中間穴13の外側には逆止Oリング15が設けられ、シリンダ8とボデー2の間には、周知の如く、ピストン9下降時に中間穴13から供給される圧縮空気を蓄える戻し空気室16が設けられている。シリンダ8の下方にはピストン9が釘を打込んだ後の余剰エネルギーを吸収するピストンバンパ17が設けられている。
【0011】
ボデー2の下側にはドライバブレード12の案内穴を有するテールカバー18などで構成される射出部19と、図示しない釘を蓄えるマガジン20が設けられている。ボデー2の上側に主弁上室6及び蓄圧室3の一部を構成するエキゾーストカバー21がボルトなどによって締結されている。エキゾーストカバー21には、釘打機1を保持した手の親指もしくは人指し指の可動範囲内に放出弁22の操作子23が打込制御用の制御弁4とは別に独立して設けられ、また、蓄圧室3より低い圧力を一定に保つ減圧弁24が設けられている。エキゾーストカバー21の上方凹部25には圧縮空気を放出するノズル26が設けられている。蓄圧室3と減圧弁24は空気通路27を介して連通し、減圧弁24と放出弁22は空気通路28を介して連通し、放出弁22とノズル26は空気通路29を介して連通している。減圧弁24には、空気通路28の圧力を一定に保つために弁体30が軸方向に摺動可能に設けられ、スプリング31、32の付勢力とダイヤフラム33にかかる圧力による押圧力のバランスで空気通路27と空気通路28を断続する構造になっている。放出弁22には、大気と空気通路29を常時遮断するOリング34、操作子23の非操作時及び操作時に空気通路28と空気通路29を遮断及び連通させるOリング35が設けられている。
【0012】
放出弁22は、バルブブッシュ36と軸方向に摺動し、Oリング35とバルブブッシュ36がシールするシール面の直径φCが、Oリング34とバルブブッシュ36がシールするシール面の直径φDより若干大きく設定され、スプリング37の付勢力と圧縮空気の圧力により放出弁22は、操作子23側に常時付勢されている。ノズル26には空気通過面積を絞った開口部38が設けられている。
【0013】
次に上記構成のエアダスタ付き釘打機1による打込み動作を参照して説明する。図示しない木材などの被打込材にセフティアーム11の先端を押し当てセフティアーム11を押し上げる。この状態でトリガレバー10を引くと主弁上室6内の圧縮空気が空気通路5、制御弁4を介して大気に放出され、主弁7が上昇して、圧縮空気がシリンダ8内のピストン9上側に流入してピストン9と一体のドライバブレード12が急激に下降する。ドライバブレード12は下死点まで下降しながらテールカバー18内の図示しない釘を被打込材に打込む。ピストン9下側の空気が下部穴14を介して戻し空気室16に流入すると共に、ピストン9が中間穴13を通過するとシリンダ8内のピストン9上側の圧縮空気の一部も戻し空気室16に流入する。ピストン9はピストンバンパ17に接触して、ピストンバンパ17を変形させ釘打込後の余剰エネルギーが吸収される。
【0014】
セフティアーム11先端を放すかトリガレバー10を戻すと、蓄圧室3の圧縮空気が空気通路5を介して主弁上室6に流入して主弁7を閉じる。同時に排気口39が開き、シリンダ8内のピストン9上側の圧縮空気が大気に放出され、戻し空気室16に蓄えられた圧縮空気によってピストン9が上死点に戻る。以上の流れで1回の打込み行程が終了する。
【0015】
次に、上記構成のエアダスタ付き釘打機1の除塵動作を図2、図3、図6を参照して説明する。
【0016】
減圧弁24の弁体室40が大気圧のため、スプリング32の付勢力で弁体30が開いた状態になり、圧縮空気が蓄圧室3から空気通路27を介して弁体室40に流入する。次に、空気通路28を介して放出弁室41に流入する。放出弁室41が所定の圧力になると、スプリング32の付勢力より、スプリング31の付勢力及び弁体室40の圧縮空気でダイヤフラム33を押す力が大きくなり、弁体30が閉じ、空気通路27と弁体室40が遮断される。
【0017】
次に、除塵作業を行う箇所にノズル26を向け、釘打機本体1を保持した手で、スプリング37の付勢力と圧縮空気の圧力による付勢力に抗して放出弁22の操作子23を押すと、空気通路29を介してノズル26先端の開口部38から圧縮空気が放出され、粉塵、木屑等が圧縮空気の圧力により吹き飛ばされる。
【0018】
弁体室40、空気通路28、放出弁室41、空気通路29の圧縮空気がノズル26から放出され、その圧縮空気の圧力が設定圧より低くなると、スプリング31の付勢力と弁体室40の圧縮空気の圧力によってダイヤフラム33を押す押圧力より、スプリング32の付勢力が大きくなり、弁体30が開き、空気通路27と弁体室40が連通する。すなわち弁体室40すなわち空気通路28、放出弁室41が所定の圧力になるように弁体30が摺動して調節する。
【0019】
放出弁22の操作子23を戻すと、放出弁室41と空気通路29が遮断され、弁体室40、空気通路28、放出弁室41が所定の圧力になった時に、スプリング32の付勢力より、スプリング31の付勢力、弁体室40の圧縮空気でダイヤフラム33を押す力が大きくなり、弁体30が閉じる。
【0020】
本発明の他の実施形態を図4、5を参照して説明する。この実施形態は上記実施形態と異なり、減圧弁24が放出弁22とノズル26の間に設けられているのが特徴である。蓄圧室3と放出弁22は空気通路27を介して連通し、放出弁22と減圧弁24は空気通路28を介して連通し、減圧弁24とノズル26は空気通路29を介して連通している。減圧弁24の構造は図3の構造と同じであり説明を省略する。
【0021】
放出弁22は、バルブブッシュ36と軸方向に摺動し、Oリング35とバルブブッシュ36がシールするシール面の直径φCが、Oリング34とバルブブッシュ36がシールするシール面の直径φDより若干大きく設定され、スプリング37の付勢力と共に圧縮空気の圧力で放出弁22は操作子23側に常時付勢されている。
【0022】
除塵作業を行う箇所にノズル26を向け、釘打機本体1を保持した手で、スプリング37の付勢力と圧縮空気の圧力で常時付勢している付勢力に抗して放出弁22の操作子23を押す。空気通路28、弁体室40、空気通路29を介してノズル26先端の開口部38から放出され、所定箇所の粉塵、木屑等が風圧により吹き飛ばされる。ノズル26から放出される圧縮空気の圧力は、上記と同様に所定の圧力に調節されるので、粉塵、木屑が飛ばされすぎるという問題は解消される。
【0023】
【発明の効果】
本発明によれば、蓄圧室とノズルの間に圧縮空気を減圧する減圧機構を設けたので、ノズルから放出される圧力を蓄圧室内の圧縮空気の圧力より小さくすることができ、粉塵、木屑が飛ばされすぎるという欠点を解消できる。
【図面の簡単な説明】
【図1】エアダスタ付き釘打機の一例を示す断面側面図。
【図2】図1のA−A線断面図。
【図3】本発明釘打機要部の一実施形態を示し、図2のB−B線断面相当図。
【図4】本発明釘打機要部の他の実施形態を示し、図1のA−A線断面相当図。
【図5】図4のB−B線断面図。
【図6】除塵作業を行う状態を示す説明用斜視図。
【図7】従来のエアダスタ付き釘打機の一例を示す図1のB−B線断面図。
【符号の説明】
1はエアダスタ付き釘打機、3は蓄圧室、22は放出弁、23は操作子、24は減圧弁、26はノズル、27〜29は空気通路、30は弁体、31、32はスプリング、33はダイヤフラム、40は弁体室である。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a nailer with an air duster that freely releases compressed air for a cleaning operation for removing dust, wood chips and the like.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 10-109280 has proposed a nailer with an air duster equipped with an air duster mechanism that can easily perform nailing and cleaning operations. When the nozzle is pointed at the place where the cleaning work is to be performed and the operator of the discharge valve is pushed with the hand holding the nailing machine body, the compressed air in the pressure accumulating chamber is suddenly released from the tip of the nozzle, and dust, wood chips, etc. are removed. .
[0003]
Next, the air duster mechanism will be described with reference to FIGS. 1, 2, and 7. FIG. An exhaust cover 21 constituting a part of the main valve upper chamber 6 and the pressure accumulating chamber 3 is fastened to the upper side of the body 2 with bolts or the like. The exhaust cover 21 is provided with a manipulator 23 of the discharge valve 22 within the movable range of the thumb or forefinger of the hand holding the nailing machine 1 separately from the control valve 4 for driving control, and the exhaust cover 21 The upper recess 25 is provided with a nozzle 26 for discharging compressed air.
[0004]
The pressure accumulating chamber 3 and the discharge valve 22 communicate with each other through an air passage 27, and the discharge valve 22 and the nozzle 26 communicate with each other through an air passage 29. The release valve 22 is provided with an O-ring 34 that always shuts off the atmosphere and the air passage 29 and an O-ring 35 that shuts off and communicates with the air passage 27 and the air passage 29 when the operating element 23 is not operated and when it is operated.
[0005]
The discharge valve 22 slides in the axial direction of the valve bush 36, and the diameter φC of the seal surface sealed by the O-ring 35 and the valve bush 36 is slightly larger than the diameter φD of the seal surface sealed by the O-ring 34 and the valve bush 36. The release valve 22 is constantly urged toward the operating element 23 by the pressure of compressed air together with the urging force of the spring 37.
[0006]
[Problems to be solved by the invention]
Both the power source for driving the nail and the power source of the air duster are compressed air stored in the pressure accumulating chamber 3, and when the required pressure is different, it must be matched to the higher one. In particular, in the case of a high-pressure nailer, the working pressure is as high as 0.98 to 2.45 Mpa, and the air duster is set as low as 0.39 to 0.83 Mpa of the general pressure. When the inside is made high-pressure, compressed air is released from the nozzle 26 with high pressure, and dust, wood chips, etc. are wound around the surroundings, or the nailing machine 1 is moved or swung by the reaction force. There was a problem that it became difficult or the injection sound generated from the nozzle 26 became loud. Further, if the pressure of compressed air to be discharged is reduced by reducing the passage area of the compressed air through the nozzle 26 and the discharge valve 22 to increase the resistance, a high frequency injection sound is generated from the nozzle 26.
[0007]
An object of the present invention is to eliminate the above-mentioned problems and to make the pressure released from the nozzle smaller than the pressure of the compressed air in the accumulator.
[0008]
[Means for Solving the Problems]
The above object is achieved by providing a pressure reducing mechanism for reducing the pressure of compressed air between the pressure accumulating chamber and the nozzle.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIG. 3, and the overall configuration and operation of the nailing machine will be described with reference to FIG.
Compressed air supplied from a compressor (not shown) via an air hose (not shown) is accumulated in the pressure accumulating chamber 3 of the body 2. The compressed air enters the main valve upper chamber 6 via the control valve 4 and the air passage 5, and presses the main valve 7 against the upper surface of the cylinder 8. In this state, the upper surfaces of the main valve 7 and the cylinder 8 are sealed, and the compressed air does not enter the cylinder 8, so that the piston 9 maintains the top dead center. The trigger lever 10 cooperates with the operation of the safety arm 11 and opens and closes the control valve 4 by pulling and returning it, and selectively connects the main valve upper chamber 6 to the pressure accumulating chamber 3 or the atmosphere.
[0010]
A driver blade 12 is integrally connected to the piston 9. An intermediate hole 13 and a lower hole 14 are formed in the middle and lower part of the cylinder 8, respectively, and a check O-ring 15 is provided outside the intermediate hole 13. As is well known between the cylinder 8 and the body 2, A return air chamber 16 for storing compressed air supplied from the intermediate hole 13 when the piston 9 descends is provided. A piston bumper 17 that absorbs surplus energy after the piston 9 has driven the nail is provided below the cylinder 8.
[0011]
On the lower side of the body 2, there are provided an injection portion 19 composed of a tail cover 18 having a guide hole for the driver blade 12 and a magazine 20 for storing nails (not shown). An exhaust cover 21 constituting a part of the main valve upper chamber 6 and the pressure accumulating chamber 3 is fastened to the upper side of the body 2 with bolts or the like. The exhaust cover 21 is provided with an operating element 23 of the discharge valve 22 independently of the control valve 4 for driving control within the movable range of the thumb or index finger of the hand holding the nailing machine 1, Ru Tei pressure reducing valve 24 is provided to maintain the pressure below the pressure accumulating chamber 3 constant. A nozzle 26 that discharges compressed air is provided in the upper recess 25 of the exhaust cover 21. The pressure accumulating chamber 3 and the pressure reducing valve 24 communicate with each other through an air passage 27, the pressure reducing valve 24 and the discharge valve 22 communicate with each other through an air passage 28, and the discharge valve 22 and the nozzle 26 communicate with each other through an air passage 29. Yes. In order to keep the pressure in the air passage 28 constant, the pressure reducing valve 24 is provided with a valve body 30 slidable in the axial direction. The balance between the urging force of the springs 31, 32 and the pressing force due to the pressure applied to the diaphragm 33 is provided. The air passage 27 and the air passage 28 are intermittently connected. The release valve 22 is provided with an O-ring 34 that always shuts off the atmosphere and the air passage 29, and an O-ring 35 that shuts off and communicates the air passage 28 and the air passage 29 when the operating element 23 is not operated and when it is operated.
[0012]
The discharge valve 22 slides axially with the valve bush 36, and the diameter φC of the seal surface sealed by the O-ring 35 and the valve bush 36 is slightly larger than the diameter φD of the seal surface sealed by the O-ring 34 and the valve bush 36. The release valve 22 is constantly urged toward the operation element 23 by the urging force of the spring 37 and the pressure of compressed air. The nozzle 26 is provided with an opening 38 with a reduced air passage area.
[0013]
Next, a description will be given with reference to a driving operation by the nail driver 1 with the air duster having the above configuration. The tip of the safety arm 11 is pressed against a material to be driven such as wood, not shown, and the safety arm 11 is pushed up. When the trigger lever 10 is pulled in this state, the compressed air in the main valve upper chamber 6 is released to the atmosphere through the air passage 5 and the control valve 4, the main valve 7 is raised, and the compressed air is moved to the piston in the cylinder 8. 9 The driver blade 12 integrated with the piston 9 is rapidly lowered by flowing into the upper side. The driver blade 12 drives a nail (not shown) in the tail cover 18 into the driven material while descending to the bottom dead center. Air below the piston 9 flows into the return air chamber 16 through the lower hole 14, and when the piston 9 passes through the intermediate hole 13, part of the compressed air above the piston 9 in the cylinder 8 also enters the return air chamber 16. Inflow. The piston 9 comes into contact with the piston bumper 17 to deform the piston bumper 17 and absorb the surplus energy after nail driving.
[0014]
When the tip of the safety arm 11 is released or the trigger lever 10 is returned, the compressed air in the pressure accumulating chamber 3 flows into the main valve upper chamber 6 through the air passage 5 and closes the main valve 7. At the same time, the exhaust port 39 opens, the compressed air above the piston 9 in the cylinder 8 is released to the atmosphere, and the piston 9 returns to the top dead center by the compressed air stored in the return air chamber 16. With the above flow, one driving process is completed.
[0015]
Next, the dust removal operation of the air duster-equipped nail driver 1 having the above-described configuration will be described with reference to FIGS. 2, 3, and 6.
[0016]
Since the valve body chamber 40 of the pressure reducing valve 24 is atmospheric pressure, the valve body 30 is opened by the biasing force of the spring 32, and the compressed air flows from the pressure accumulation chamber 3 into the valve body chamber 40 through the air passage 27. . Next, it flows into the discharge valve chamber 41 via the air passage 28. When the discharge valve chamber 41 reaches a predetermined pressure, the urging force of the spring 31 and the force of pushing the diaphragm 33 with the compressed air in the valve body chamber 40 become larger than the urging force of the spring 32, the valve body 30 is closed, and the air passage 27 The valve body chamber 40 is shut off.
[0017]
Next, the nozzle 26 is directed to the place where the dust removal operation is performed, and the operator 23 of the discharge valve 22 is moved against the urging force of the spring 37 and the urging force of the compressed air with the hand holding the nailing machine body 1. When pressed, compressed air is discharged from the opening 38 at the tip of the nozzle 26 through the air passage 29, and dust, wood chips and the like are blown away by the pressure of the compressed air.
[0018]
When the compressed air in the valve body chamber 40, the air passage 28, the discharge valve chamber 41, and the air passage 29 is discharged from the nozzle 26 and the pressure of the compressed air becomes lower than the set pressure, the urging force of the spring 31 and the valve body chamber 40 The urging force of the spring 32 becomes larger than the pressing force pushing the diaphragm 33 by the pressure of the compressed air, the valve body 30 opens, and the air passage 27 and the valve body chamber 40 communicate with each other. That is, the valve body 30 is slid and adjusted so that the valve body chamber 40, that is, the air passage 28 and the discharge valve chamber 41 have predetermined pressures.
[0019]
When the operating element 23 of the release valve 22 is returned, the release valve chamber 41 and the air passage 29 are shut off, and when the valve body chamber 40, the air passage 28, and the release valve chamber 41 reach a predetermined pressure, the biasing force of the spring 32 is applied. Accordingly, the urging force of the spring 31 and the force of pushing the diaphragm 33 with the compressed air of the valve body chamber 40 are increased, and the valve body 30 is closed.
[0020]
Another embodiment of the present invention will be described with reference to FIGS. Unlike this embodiment, this embodiment is characterized in that a pressure reducing valve 24 is provided between the discharge valve 22 and the nozzle 26. The pressure accumulating chamber 3 and the discharge valve 22 communicate with each other through an air passage 27, the discharge valve 22 and the pressure reducing valve 24 communicate with each other through an air passage 28, and the pressure reducing valve 24 and the nozzle 26 communicate with each other through an air passage 29. Yes. The structure of the pressure reducing valve 24 is the same as the structure of FIG.
[0021]
The discharge valve 22 slides axially with the valve bush 36, and the diameter φC of the seal surface sealed by the O-ring 35 and the valve bush 36 is slightly larger than the diameter φD of the seal surface sealed by the O-ring 34 and the valve bush 36. The release valve 22 is constantly urged toward the operating element 23 by the pressure of compressed air together with the urging force of the spring 37.
[0022]
Operation of the discharge valve 22 against the urging force constantly urged by the urging force of the spring 37 and the pressure of the compressed air with the hand holding the nailing machine body 1 by directing the nozzle 26 to the place where the dust removal operation is performed Press the child 23. It is discharged from the opening 38 at the tip of the nozzle 26 through the air passage 28, the valve body chamber 40, and the air passage 29, and dust, wood chips and the like at a predetermined location are blown off by the wind pressure. Since the pressure of the compressed air discharged from the nozzle 26 is adjusted to a predetermined pressure in the same manner as described above, the problem that dust and wood chips are blown too much is solved.
[0023]
【The invention's effect】
According to the present invention, since the pressure reducing mechanism for reducing the pressure of the compressed air is provided between the pressure accumulating chamber and the nozzle, the pressure released from the nozzle can be made smaller than the pressure of the compressed air in the pressure accumulating chamber. The disadvantage of being skipped too much can be eliminated.
[Brief description of the drawings]
FIG. 1 is a sectional side view showing an example of a nailing machine with an air duster.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
3 shows an embodiment of a main portion of the nailing machine of the present invention, and is a cross-sectional view corresponding to the line BB of FIG.
4 shows another embodiment of the main portion of the nail driver of the present invention, and is a cross-sectional view corresponding to the line AA in FIG.
5 is a cross-sectional view taken along line BB in FIG.
FIG. 6 is an explanatory perspective view showing a state in which dust removal work is performed.
7 is a cross-sectional view taken along the line BB of FIG. 1 showing an example of a conventional nailer with an air duster.
[Explanation of symbols]
1 is a nailing machine with an air duster, 3 is a pressure accumulating chamber, 22 is a discharge valve, 23 is an operator, 24 is a pressure reducing valve, 26 is a nozzle, 27 to 29 are air passages, 30 is a valve body, 31 and 32 are springs, 33 is a diaphragm, and 40 is a valve body chamber.

Claims (3)

高圧の圧縮空気を蓄える蓄圧室と、円筒状のシリンダ内に往復動可能に設けられたピストンと、シリンダ内のピストン上側に蓄圧室の圧縮空気を入気させると共にピストン上側の圧縮空気を排気させる動作を制御する制御弁と、圧縮空気を放出する開口部を有するノズルと、ノズルと蓄圧室を連通する空気通路と、ノズルから圧縮空気の放出を制御する放出弁を備えた釘打機であって、
前記蓄圧室とノズルの間に圧縮空気を減圧する減圧弁を設け、蓄圧室内の圧縮空気の圧力より小さくしてノズルに供給し、ノズルから放出される圧縮空気の圧力を減圧弁により設定された一定の圧力としたことを特徴とするエアダスタ付き釘打機。
A pressure accumulating chamber for storing high-pressure compressed air, a piston provided in a cylindrical cylinder so as to be able to reciprocate, and allowing the compressed air in the accumulating chamber to enter and exhaust the compressed air above the piston above the piston in the cylinder. A nailing machine comprising a control valve for controlling operation, a nozzle having an opening for discharging compressed air, an air passage communicating with the nozzle and the pressure accumulating chamber, and a discharge valve for controlling the discharge of compressed air from the nozzle. And
A pressure reducing valve for reducing the pressure of the compressed air is provided between the pressure accumulating chamber and the nozzle, and the pressure of the compressed air discharged from the nozzle is set by the pressure reducing valve. A nailer with an air duster characterized by a constant pressure.
前記減圧を蓄圧室と放出弁との間に設けたことを特徴とする請求項1記載のエアダスタ付き釘打機。2. The nailer with an air duster according to claim 1, wherein the pressure reducing valve is provided between the pressure accumulating chamber and the discharge valve. 前記減圧を放出弁とノズルとの間に設けたことを特徴とする請求項1記載のエアダスタ付き釘打機。2. A nailer with an air duster according to claim 1, wherein the pressure reducing valve is provided between the discharge valve and the nozzle.
JP2002160101A 2002-05-31 2002-05-31 Nailer with air duster Expired - Lifetime JP3969194B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2002160101A JP3969194B2 (en) 2002-05-31 2002-05-31 Nailer with air duster
DE60320891T DE60320891D1 (en) 2002-05-31 2003-05-29 Nailer with dedusting device
EP03253373A EP1366863B1 (en) 2002-05-31 2003-05-29 Nail gun provided with duster function
TW092114547A TWI247651B (en) 2002-05-31 2003-05-29 Nail gun provided with duster function
US10/446,790 US6783050B2 (en) 2002-05-31 2003-05-29 Nail gun provided with duster function
US10/902,776 US7322505B2 (en) 2002-05-31 2004-08-02 Nail gun provided with duster function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002160101A JP3969194B2 (en) 2002-05-31 2002-05-31 Nailer with air duster

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JP3969194B2 true JP3969194B2 (en) 2007-09-05

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Publication number Priority date Publication date Assignee Title
US7780053B2 (en) 2006-09-29 2010-08-24 De Poan Pneumatic Corp. Nail gun with air injection mechanism
TWI457215B (en) 2006-12-07 2014-10-21 Max Co Ltd Air pressure tool with blower
EP2116334B1 (en) 2007-03-08 2012-05-16 Max Co., Ltd. Pneumatic tool
JP2008173767A (en) * 2008-04-03 2008-07-31 Hitachi Koki Co Ltd Air duster
JP7114934B2 (en) * 2018-03-01 2022-08-09 マックス株式会社 pneumatic tools

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