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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Prior art keywords
pressure
valve
compressed air
air
nozzle
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JP2002160101A
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JP2004001136A (en
Inventor
禎紀 石沢
義博 仲野
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Koki Holdings Co Ltd
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Hitachi Koki Co Ltd
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Priority to JP2002160101A priority Critical patent/JP3969194B2/en
Priority to TW092114547A priority patent/TWI247651B/en
Priority to EP03253373A priority patent/EP1366863B1/en
Priority to US10/446,790 priority patent/US6783050B2/en
Priority to DE60320891T priority patent/DE60320891D1/en
Publication of JP2004001136A publication Critical patent/JP2004001136A/en
Priority to US10/902,776 priority patent/US7322505B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/047—Mechanical 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. 前記減圧弁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. 前記減圧弁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
TW092114547A TWI247651B (en) 2002-05-31 2003-05-29 Nail gun provided with duster function
EP03253373A EP1366863B1 (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
DE60320891T DE60320891D1 (en) 2002-05-31 2003-05-29 Nailer with dedusting device
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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JP2004001136A JP2004001136A (en) 2004-01-08
JP3969194B2 true JP3969194B2 (en) 2007-09-05

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
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
WO2008069316A1 (en) 2006-12-07 2008-06-12 Max Co., Ltd. Air tool with air duster
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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