1268837 九、發明說明： 【發明所屬之技術領域】 本發明主要係揭示一種氣動 指利用一體成型之導外* 、’7鉍之後排氣裝置，尤 相_打釘餘後排氣裝置者。 【先前技術】 一=r氣動打釘鎗係於握柄部後方之進氣孔接 ，又乳體供應源，可提供打釘餘進行 進乱孔接 擊發之後，氣缸内的氣體可由 =的動作，而在 者在使用打釘_，鎗的頂二 ==用 體會噴在使用者的身上或是頭部= 者來既非吊不舒適且有可能造成使用者的傷害 此缺點，故有許多排氣結構之改良設計。 *、'、 口 其中’凊翏照我國專利公告編號第576285號之 氣結構」專利案，其包括有—打釘鎗本體盘一後 基本體20。該打釘鎗本體1〇設有一擊釘部一握 12:該握柄部12«處突設—容孔14，該容孔14=1 體導入該細部11⑽行擊發動作。該後塞本體2〇則裝 設於該握柄部12内，該後塞本體2〇包括有一頭部2ι與二 排氣導管28，該頭部21開設有一進氣孔25與—排^孔 27，該排氣導管28則自該排氣孔27延伸而出，並與該容 孔14相連接。擊發時氣體可由進氣孔25導入擊釘部n， 再經該容孔14流經該排氣導管28而自該排氣孔27導出 者0 1268837 口亥白知結構於貫用上仍有多處缺點，因該後夷 係為塑膠;體射出成型，故除了原本打釘餘本體Γ〇之模具 二員二開另一模具以生產該後塞本體20，而如此將 吏仔核八開备成本大幅提高，不符經濟效益。且成型 後塞本體20仍需與該打釘餘本體1〇進行組裝步驟，造成 生產線的負擔。而該排氣導管2 8與該容孔！ 4之間為了要 保持其氣密關係，故需套設—環圈29，但由於該容孔Μ =在該握柄部12 _深處，在組斜常會發生對位不正確 的缺點’而使㈣_ 29偏移或滑脫，無 的功能，造成產品不良率提高。 除狀外’該職導管28_職截面積與該握柄部 ㈣截面積差異甚大’在排氣時該排氣導管28無 /、（好的排氣效率，*如此將會 量減弱或動作不破實。且該排氣孔27係直 到使:^二體10之後端’仍會發生排出的高壓氣體喷 此轉氣上的問題，在該案先前技術中 專利幸亦右905旎「打釘鎗排氣後送裝置之結構改良」 不m目同缺點’而前述不符產業利用 不貫用，故有改良之必要。 『氣上結構之缺失，本發明人乃發明出一種 設；：了二=裝置』’其主要係利用-刪之導氣 服上述習式製品之财n’還可提高排氣效率，故可克 1268837 【發明内容】 …本發明『氣動釘鎗之後排氣裝置』所欲解決之技術問 在㈣知結構除了 f職原本打⑽本體之模具 ^、再開另模具以生產該後塞本體，而如此將使 =极具開發成本大幅提高，*符經濟效益。且成型後之後 基本體仍需_打釘餘本體進行組裝倾，造成生產線的 負擔。而在組裝時常會發生對位狂確的缺點，使得該環 圈，，或脫’無法達到完全氣密的功能，造成產品不良 ^提回、除此之外’該排氣導管内的排氣截面積與該握柄 相之進减面積差異甚大，在排氣時該排氣導管無法提 供-良好的排氣效率，而如此將會影響擊釘時的效率，使 得打釘力減弱_作树實，且該聽孔魅接朝向打 釘餘本體之魏，仍生排出的高魏體_使用者的 缺點，故亟有待於改進。 本發明『氣動釘鎗之後排氣裝置』，其包括有一本體、一 底座與-上蓋；該本體具有—氣缸與—握柄，該握柄係自該氣 缸之-侧延伸而出，且該氣缸與該握柄之間設有一扳機部，該 握柄内軸向設有1板，而該隔板係一體成型於該握柄内，且 該隔板將該握油區隔為—進氣道與—魏道，該進氣道可供 高壓氣體進入該氣缸内，該排氣道則可供該氣紅内之高麗氣體 排出，該握柄於靠近該扳機部之一侧形成有一與該排氣道相通 連的缺口；該底座係裝設於該握柄異於該氣缸之—端，該底座 於-側開設有：連接孔，該連接孔可用以接設—氣體供應源， 並使高壓氣縣人該握柄之進氣道；該上蓋健設於該本體之1268837 IX. Description of the Invention: [Technical Field of the Invention] The present invention mainly discloses a pneumatic finger which utilizes an integrally formed outer exhausting device, and an exhausting device after the '7', especially the remaining exhausting device. [Prior Art] A =r pneumatic nail gun is attached to the intake hole behind the grip, and the source of the milk supply can provide the nailing for the gas in the cylinder after the punching is performed. , while the person is using the nail _, the top 2 of the gun == the body will be sprayed on the user's body or the head = the person is neither uncomfortable and may cause damage to the user, so there are many Improved design of the exhaust structure. *, ', 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The nail gun body 1 is provided with a nailing portion and a grip 12: the grip portion 12« protrudes from the receiving hole 14 , and the hole 14=1 is introduced into the thin portion 11 (10). The rear plug body 2 is mounted in the handle portion 12, and the rear plug body 2 includes a head portion 2i and two exhaust ducts 28, and the head portion 21 defines an air inlet hole 25 and a hole 27. The exhaust duct 28 extends from the exhaust hole 27 and is connected to the bore 14. At the time of firing, the gas can be introduced into the nailing portion n through the air inlet hole 25, and then flows through the air outlet hole 28 through the air outlet hole 28 and is led out from the air venting hole 27 0 1268837 Disadvantages, because the post is made of plastic; body injection molding, so in addition to the original nailing of the body of the mold, the second member of the mold opened another mold to produce the rear plug body 20, and thus the cost of the core Significantly improved, not in line with economic benefits. Moreover, the plug body 20 still needs to be assembled with the nail body 1 ,, resulting in a burden on the production line. And the exhaust duct 28 and the bore! In order to maintain its airtight relationship between 4, it is necessary to set the ring 29, but since the hole Μ = in the depth of the grip portion 12 _, the skew of the alignment tends to occur incorrectly. Make (4) _ 29 offset or slip, no function, resulting in improved product defect rate. In addition to the shape, the cross-sectional area of the service conduit 28_ is very different from the cross-sectional area of the grip portion (four). The exhaust duct 28 has no / during exhaust (good exhaust efficiency, * so the amount will be weakened or act The venting port 27 is not until the rear end of the second body 10 is still capable of expelling the high-pressure gas to be ventilated. In the prior art, the patent is fortunately right 905 旎 "nailing The structure improvement of the gun exhausting and delivering device is not the same as the shortcomings, and the above-mentioned inconsistency in industrial use is necessary. Therefore, the inventor has invented a design. = "Device" is mainly used - the air-conditioning service of the above-mentioned formula products can also improve the exhaust efficiency, so Keke 1268837 [Invention content] ... The invention "Pneumatic nail gun after the exhaust device" The technical problem to be solved is that (4) knowing the structure, in addition to the original job of the f (10) body mold ^, and then opening another mold to produce the rear plug body, and this will make = greatly increase the development cost, * economic benefits. After that, the basic body still needs to be _ nailed body to assemble and pour The burden on the production line is caused. In the assembly, the shortcomings of the positional madness often occur, so that the ring, or the 'can't reach the function of completely airtightness, causing the product to be defective ^Retrieving, in addition to the 'exhaust The cross-sectional area of the exhaust in the duct is very different from the area of the pick-and-drop of the grip. The exhaust duct cannot provide good exhaust efficiency when exhausting, and this will affect the efficiency of the nailing, so that the nail is nailed. The force is weakened _ the tree is solid, and the listening hole is connected to the core of the nailing body, and the high-definition body of the user is still discharged. Therefore, it needs to be improved. The utility model comprises a body, a base and an upper cover; the body has a cylinder and a grip, the grip extends from a side of the cylinder, and a trigger portion is arranged between the cylinder and the grip The handle is axially provided with a plate, and the partition is integrally formed in the handle, and the partition divides the oil holding area into an inlet port and a Wei road, and the air inlet can be High pressure gas is supplied into the cylinder, and the exhaust passage is available for the gas red The gas is discharged, the handle is formed on a side of the trigger portion to form a notch communicating with the exhaust passage; the base is mounted on the end of the handle different from the cylinder, and the base is disposed on the side a connecting hole, wherein the connecting hole can be connected to a gas supply source, and the high pressure gas county person has the inlet of the handle; the upper cover is fixed on the body
手段及其功效，茲舉一較 此僅供說明之用，在專利 該本體10具有一氣缸u與一握柄12，該握柄12係 自u亥氣缸11之一側延伸而出。該氣缸11與該握柄之間 叹有一扳機部13，而該握柄12異於該氣缸丨1之一端則朝 1268837 ^缸上，贿錄缸軸—賴空似糊進 一 此’該隔板-體細之導氣 ^動作，稭 i缺口,Γ高排氣效率，且可使高壓氣體經由 、 不㈢使排出的氣體喷到使用者。 f他目的、優點和本判的_特性將從町 描述與相關的附圖更加顯明。 、，、勺 【實施方式】 有關本發明所採用之技術、 佳實施例並配合圖式詳述如後， 申請上並不受此種結構之限制。 茶知第-圖與第二圖，本發明包括—本體、一底座 罚與一上蓋30。該本體10具有一氣缸n與一握柄12， ，底座20健設於該握柄12末端，該上蓋3()職設於該 氣缸11上’而該本體1G可將高壓氣翻下排出，不會有 貫到人的缺點；其中： 下突設有-腳部14。該握柄12内軸向設有—隔板15，而 该隔板15係將該握柄12内區隔為一進氣道16與一排氣道 Π。該隔板15係位於該握柄12内橫截面的中間處，恰可 使該排氣道17之截面積幾近於該進氣道16的截面積。該 排氣道17與該腳部14連接處還形成有缺口 18，該缺口 18 1268837 係使該排氣道17與該腳部14之間形成導通狀態。而該隔 板15係一體成型於該握柄12之中心，並形成有進氣道16 與排氣道17之導氣設計，除了可於模具中與該本體1〇同 日守成型’節省成本，更使設於該握柄12中間位置的隔板 15可有政的增加該握柄12的強度。The means and its effect are described for illustrative purposes only. In the patent, the body 10 has a cylinder u and a handle 12 extending from one side of the u-cylinder 11 . A trigger portion 13 is struck between the cylinder 11 and the grip, and the grip 12 is different from the one end of the cylinder bore 1 toward the 1268837 cylinder, and the cylinder shaft is slid into the cylinder shaft. The fine gas guides the action, the straw i-notch, and the high exhaust efficiency, and allows the high-pressure gas to spray the gas to the user via (3). f The purpose, advantages and characteristics of this judgment will be more apparent from the description of the town and the related drawings. The present invention is not limited by the structure, the preferred embodiment, and the detailed description of the present invention. The present invention includes a body, a base penalty and an upper cover 30. The body 10 has a cylinder n and a handle 12, and the base 20 is fixed at the end of the handle 12. The upper cover 3() is disposed on the cylinder 11 and the body 1G can turn the high-pressure gas downwards. There will be no shortcomings in people; among them: the lower part is provided - the foot 14. The handle 12 is axially provided with a partition 15 which partitions the interior of the handle 12 into an intake passage 16 and an exhaust passage. The partition 15 is located in the middle of the cross section of the grip 12 such that the cross-sectional area of the exhaust passage 17 is approximately close to the cross-sectional area of the intake passage 16. A gap 18 is formed in the junction of the exhaust passage 17 and the leg portion 14, and the notch 18 1268837 forms an electrically conductive state between the exhaust passage 17 and the leg portion 14. The partition plate 15 is integrally formed at the center of the handle 12, and is formed with a gas guiding design of the air inlet 16 and the exhaust passage 17, except that it can be molded in the mold together with the body. Further, the partition 15 provided at the intermediate position of the grip 12 can positively increase the strength of the grip 12.
該底座20係裝設於該本體1〇握柄12異於該氣缸^ 之一端，該底座20於一側開設有一連接孔21，該連接孔 21可用以接設一氣體供應源，並使氣體導入該握柄12之 進氣道16者。該底座20異於該連接孔21之一端則形成有 一擋部22，該擋部22恰可遮蓋於該握柄12之排氣道17， 而使該排氣道17僅以下方的缺口 18與外界相通連。該底 座20與該本體10握柄12之間還設有一密封件23，該密 封件23可確保該底座20與該本體1〇握柄12之間的氣^ 關係。於本實施例中該底座2〇螺鎖固定於該握柄12上。 該上蓋30係裝設於該本體1〇之氣缸n上，該上蓋 30於靠近該握柄12 4-側設有一入氣道3卜一流道％ 與-洩氣道33。該上蓋30於頂端還開設有一調整二， 2整孔34係連通於該、域道33。而_整孔34係搞設 抱牛35 ’該調整件35係可調整該道犯之流 里二上盍3G與該本體1〇氣紅u之間魏設有 的=封件36可確保該上蓋3Q與該她q氣紅Μ 關係。而於本實施例中該上蓋3q係螺鎖固定於該 請參照第三圖與第四圖， 邊入氣道31係與該進氣道 1268837 16為相通連設計，可供氣體自該進氣道16流經該入氣道 31而導入該氣缸11内。參照第三圖與第五圖，該流道32 係與該扳機部13相通連，而該扳機部13係藉一氣閥孔19 而連通於該進氣道16之一側，如此氣體即可自該進氣道 16流經該扳機部13，並經該流道32而導入該上蓋30内。 該氣閥孔19係設於該隔板15對應於該扳機部13之位置。 之參照第三圖與第六圖，該洩氣道33係與該排氣道π相 通連，而可供氣缸11内之氣體自該洩氣道33流經該排氣 道Π，並自該排氣道17下方之缺口 18處排出於大氣中， 不會有噴到人的顧慮。 參照第七圖至第九圖’為本發明之使用狀態圖。如第 七圖所示，當該本體10接上氣體供應源而尚未扣壓扳機 40時，高壓氣體係自該進氣道16流經該入氣道31而導入 咸氣紅11内，並施力於該活動閥41下方。同時該進氣道 16内的高壓氣體亦會流過該扳機部13的氣閥42，而經由 該流道32導入該上蓋30内，並施力於該活動閥41上方。 而”亥活動閥41兩侧壓力相專故為平衡狀態，但該活動閥 41上方的彈簧43施以一力將該活動閥41推向該氣缸壁 44 ’使撞針活塞45保持於原位。 土 卜參照第八圖，當扣下扳機40之後，因氣閥42將該進 氣道16與該扳機部13之間封閉阻塞，使得活動閥41 ^上 方失去高壓氣體的推力，僅剩彈簧43的下推力。而該入氣 道丨6的高壓氣體施於活動閥41下方的力量大於彈菩43 、下推力’故可使该活動閥41向上移動，並將該入氣道 1268837 勺向壓氣體快速的灌充於該氣缸壁44内，推動兮揚 針活下移產生-擊钉的動作。且此時位於氣推虹動壁1 内的乳體會經由補氣口 46流入下氣室47，而原本位於活 動閥41上方的氣體則經由該流道32導至該扳機部13而排 出至大氣中。 參照第九圖，當擊釘動作完成後，釋放扳機40使該氣 2回復至原位，此時該進氣道16内之高壓氣體則可流 經该板機部13，並由該流道32而導入該活動閥41之上 . 方>，•動閥41靠向該氣缸壁。而位於下氣室47内 £氧體自该回氣口 48流出並頂推該撞針活塞π上 =。、同時該活關41密合於該氣缸壁44之後，該活動閥 盥上^則與該洩氣道33形成導通狀態，使該撞針活塞 奶與^活動閥41之間的氣體可快速的自該洩氣道％流經 二排氣道17 ’並由握柄12下方的缺口 18迅速的排出於大 氣中，不會有直接喷到人的顧慮。 本發明利用該握柄12與該隔板15 一體成型之導氣設 » 計’將高壓氣體經過握把12之排氣道17，再由該排氣道 Π下产方的缺口 18快速的排出至大氣中可以有效的提高 其排氣效率，減少空釘的缺點發生，並間接提高打釘餘的 使用壽命。而本發明隔板15 一體成型的導氣設計，除了可 避免複雜的傳統排氣導管設計，對握柄12還有增加結構強 度的功效’而且還可節省組裝工時，進而降低生產成本者。 就以上所述可以歸納出本發明具有以下之優點： 1.本發明『氣動釘餘之後排氣裝置』，其中該握柄於中 11 1268837 :軸又有-隔板’該隔板係與該握柄為一體成型之設 ΓΙΓ,?握柄之結構強度，還可節鑛成本。 1摘灿之雜氣裝置』，其巾該隔板係將 祕柄㈣為—進氣道與—魏道，職道下方設-缺 此-體成型之導氣設計，不會使排出的氣體喷到使用 者0 截面!氣動釘鎗之後排氣裝置』，其中該排氣道之 截：近:該進氣道之截面積’如此可使打釘餘之排氣 效率=’改轉釘之動作與增场釘鎗之使用壽命。 ，疋觀之，本發雜具產社彻價值；且又未見有 :=讀:出現於國内外刊物或公開使用，實已符 。專利法規疋之積極及消極要件，理應准予發明專利。 唯^ 斤述者，僅為本發明之較佳實施例而已，當不能 件之::本::::之辄圍’故舉凡數值之變更或等效元 換，或依本u申請專利範圍所作之均等變化與修 飾，皆應仍屬本發明專利涵蓋之範疇。 、^ 【圖式之簡要說明】 第一圖：為本發明之立體外觀圖。 第二圖：為本發明之立體分解圖 第三圖：為本發明之上視圖。 第四圖·為本發明第三圖之剖面圖。 第五圖：為本發明第三圖之5〜5剖面。 第六圖：為本發明第三圖之6〜6剖面。 12 1268837 第七圖：為本發明之使用狀態圖，表示打釘鎗接上氣體供 應源而尚未扣壓扳機。 第八圖：為本發明之使用狀態圖，表示扣壓扳機後撞針動 作。 第九圖：為本發明之使用狀態圖，表示釋放扳機後撞針回 復原位。 附件：為我國專利公告編號第576285號專利案。 • 【主要元件符號說明】 10 本體 11 氣缸 12 握柄 13 扳機部 14 腳部 15 隔板 16 進氣道 17 排氣道 18 缺口 19 氣閥孔 20 底座 21 連接孔 22 檔部 23 密封件 30 上蓋 31 入氣道 32 流道 33 洩氣道 34 調整孔 35 調整件 36 密封件 40 扳機 41 活動閥 42 氣閥 43 彈簧 44 氣缸壁 45 撞針活塞 46 補氣口 47 下氣室 48 回氣口 13The base 20 is mounted on the body 1 and the handle 12 is different from one end of the cylinder. The base 20 defines a connecting hole 21 on one side, and the connecting hole 21 can be used to connect a gas supply source and make the gas The inlet 16 of the grip 12 is introduced. The base 20 is formed at a different end from the connecting hole 21 to form a stop portion 22, and the blocking portion 22 can cover the exhaust passage 17 of the handle 12, so that the exhaust passage 17 is only the lower notch 18 and The outside world is connected. A sealing member 23 is also disposed between the base 20 and the body 12 of the body 10, and the sealing member 23 ensures the air relationship between the base 20 and the body 1 gripping handle 12. In the embodiment, the base 2 is screwed to the handle 12. The upper cover 30 is mounted on the cylinder n of the body 1 . The upper cover 30 is provided with an air inlet channel 3 and a deflation channel 33 adjacent to the side of the handle 12 . The upper cover 30 further defines an adjustment 2 at the top end, and the entire hole 34 is connected to the domain 33. And _ whole hole 34 is set up to hold the cow 35 'The adjustment piece 35 can adjust the guilty of the murder of the second 盍 3G and the body 1 〇 红 red u u set = seal 36 to ensure that The upper cover 3Q has a relationship with her. In the present embodiment, the upper cover 3q is screwed and fixed to the third and fourth figures. The air inlet passage 31 is connected to the air inlet 1268837 16 for gas supply from the air inlet. 16 flows through the air intake passage 31 and is introduced into the cylinder 11. Referring to the third and fifth figures, the flow path 32 is in communication with the trigger portion 13, and the trigger portion 13 is connected to one side of the air inlet 16 by a valve hole 19, so that the gas can be self-contained. The intake passage 16 flows through the trigger portion 13 and is introduced into the upper cover 30 via the flow passage 32. The gas valve hole 19 is provided at a position where the partition plate 15 corresponds to the trigger portion 13. Referring to the third and sixth figures, the air passage 33 is in communication with the exhaust passage π, and the gas available in the cylinder 11 flows from the air passage 33 through the exhaust passage, and from the exhaust The notch 18 below the road 17 is discharged into the atmosphere, and there is no fear of spraying people. Referring to the seventh to ninth drawings, the state of use of the present invention is shown. As shown in the seventh figure, when the body 10 is connected to the gas supply source and the trigger 40 has not been pressed, the high-pressure gas system flows from the air inlet 16 through the air inlet passage 31 and is introduced into the salt gas red 11 and is applied thereto. Below the active valve 41. At the same time, the high pressure gas in the intake passage 16 also flows through the gas valve 42 of the trigger portion 13, and is introduced into the upper cover 30 via the flow passage 32, and is biased above the movable valve 41. On the other hand, the pressure phase on both sides of the movable valve 41 is in an equilibrium state, but the spring 43 above the movable valve 41 exerts a force to push the movable valve 41 toward the cylinder wall 44' to hold the striker piston 45 in place. Referring to the eighth figure, after the trigger 40 is buckled, the air valve 42 is closed and blocked between the air inlet 16 and the trigger portion 13, so that the thrust of the high pressure gas is lost above the movable valve 41^, and only the spring 43 remains. The lower thrust is applied, and the high-pressure gas of the air inlet 丨6 is applied to the lower portion of the movable valve 41 by a force greater than the rappelt 43 and the lower thrust, so that the movable valve 41 can be moved upward, and the air inlet 1268837 is scooped toward the gas. Filling in the cylinder wall 44, pushing the hoisting needle to move down to generate a nail-cracking action. At this time, the milk body located in the air-pushing rainbow wall 1 flows into the lower air chamber 47 through the air supply port 46, and the original The gas located above the movable valve 41 is led to the trigger portion 13 through the flow passage 32 and discharged to the atmosphere. Referring to the ninth figure, when the nailing operation is completed, the trigger 40 is released to return the gas 2 to the original position. The high pressure gas in the intake passage 16 can flow through the trigger unit 13 And the flow passage 32 is introduced into the movable valve 41. The square valve is moved toward the cylinder wall, and the oxygen in the lower air chamber 47 flows out from the air return port 48 and pushes the striker. After the piston π is at the same time, the active valve 41 is in close contact with the cylinder wall 44, and the movable valve is electrically connected to the air passage 33 to make the gas between the needle piston milk and the movable valve 41. It can quickly flow from the air passageway % through the two exhaust passages 17' and is quickly discharged into the atmosphere by the notch 18 under the grip 12, without the concern of direct injection to the person. The present invention utilizes the grip 12 with The diaphragm 15 integrally formed by the air guiding device passes the high-pressure gas through the air passage 17 of the grip 12, and is quickly discharged into the atmosphere by the notch 18 of the lower side of the exhaust duct. Exhaust efficiency, reduce the shortcomings of empty nails, and indirectly improve the service life of the nailing. The air-conducting design of the partition 15 of the present invention, in addition to avoiding the complicated conventional exhaust duct design, also the grip 12 It has the effect of increasing the structural strength' and also saves assembly time and thus reduces The production cost can be summarized as follows: 1. The present invention has the following advantages: 1. The present invention "after pneumatic pneumatic residual after exhaust device", wherein the handle is in the middle 11 1268837: the shaft has a - partition 'the partition The plate system and the handle are integrally formed, the structural strength of the handle, and the cost of the mine can be saved. 1 picking up the gas device of the can, the towel is the partition (four) is the inlet port And - Wei Dao, under the service road - the lack of this body-formed gas guide design, will not spray the gas to the user 0 section! After the pneumatic nail gun exhaust device, where the exhaust channel cut: Near: The cross-sectional area of the air intake 'This can make the exhaust efficiency of the nails = 'change the nail action and increase the service life of the nail gun. , 疋观之, this hair miscellaneous goods produced by the company of the value; and did not see: = read: appeared in domestic and foreign publications or public use, it has been. The positive and negative elements of the patent regulations should be granted invention patents. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Equivalent changes and modifications shall remain within the scope of this invention. , ^ [Brief description of the drawings] The first figure: is a three-dimensional appearance of the present invention. Second drawing: an exploded perspective view of the present invention. FIG. 3 is a top view of the present invention. Figure 4 is a cross-sectional view of the third drawing of the present invention. Fig. 5 is a cross section taken along line 5 to 5 of the third drawing of the present invention. Figure 6 is a cross section taken along line 6 to 6 of the third drawing of the present invention. 12 1268837 Fig. 7 is a view showing the state of use of the present invention, showing that the nail gun is connected to the gas supply source and the trigger has not been pressed. Figure 8 is a view showing the state of use of the present invention, showing the action of the striker after the trigger is pressed. Fig. 9 is a view showing the state of use of the present invention, showing that the striker is returned to the original position after the trigger is released. Attachment: It is the patent case No. 576285 of China Patent Publication No. 576285. • [Main component symbol description] 10 Body 11 Cylinder 12 Grip 13 Trigger 14 Foot 15 Separator 16 Intake 17 Exhaust 18 Notch 19 Air valve hole 20 Base 21 Connection hole 22 Stage 23 Seal 30 Upper cover 31 Air inlet 32 Air passage 33 Air vent 34 Adjustment hole 35 Adjustment member 36 Seal 40 Trigger 41 Active valve 42 Air valve 43 Spring 44 Cylinder wall 45 Needle piston 46 Air supply port 47 Lower air chamber 48 Air return port 13