200824859 九、發明說明· 【發明所屬之技術領域】 本發明涉及一種氣動擊釘裝置， 釘槍内部設置可向下移動而開閥餐特別疋私一種於氣動 【先前技術】 、了之乳缸的裝置技術。 傳統氣動擊釘裝置的槍體内，比 槍尾持續導入高壓空氣集壓，以自具有一主氣室，可自 源，且槍體内皆設有一可動或不動為^釘操作之動力來 一擊釘用的活塞，可將氣缸區分成二的氣缸；氣缸内設有 氣缸室，且氣缸外壁與搶體之間形=層氣缸室及一底層 下移擊釘時能集結頂層氣缸室導入的古底層氣室，於活塞 上均設有一可被壓扣而驅動擊釘的、阿壓空氣，同時槍體 主氣室之高壓空氣可導入頂層氣反f ;在壓扣扳機時， 釘，另在釋放扳機時，高壓空氣可室内驅動活塞下移擊 使底層氣室之高壓空氣導入底層奉員層氣缸至中洩除， 位。 —礼缸室内驅動活塞上移復 在先前技術中配置有可動式氣 0648202號專利案，其揭示出在一可;者，可見於美國第 -頭閥，且氣缸外壁形成-閥環，:下，動式的氣缸上設 間的-底層氣室内設置-彈箬；特別虹外壁與搶體之 、衫 坪”将別是在壓扣扳機時，主 氣室内高壓空軋能驅動閥環帶動氣缸下移，以關閉頂層氣 缸室内洩壓的上排氣通路，並開啟主氣室與頂層氣缸室之 間的通路，導引主氣室之高壓空氣經由頭閥導入頂層氣缸 室内，驅動活塞下移擊釘，此時高壓空氣會導入底層氣室 200824859 位 ^三另於釋放扳機時，高壓空氣與彈簧能—同驅動閥 ㈣乳缸上移復位’以關閉主氣室與頂層氣缸室之間的 並f:1啟頂層氣缸室内洩壓的上排氣通路，此時底層 亂至内的㊉壓空氣能導人底層氣紅室内，驅動活塞上移復 且知，在搶體内物體接觸高壓空氣的表面積越大，則 承=壓空氣之仙力也越大；惟，上述關及閥環上可 文南Μ空氣驅動氣虹上移及下移的表面積差異並不顯著， 壓扣扳機時’氣缸受高壓空氣驅動上移關閉頭閥 釋放效果並不理想，特別是#操作者不慎將搶體掉 洛地面、碰撞堅硬物或敲擊其前端射嘴時，容易導致頭闕 鬆脫開閥而誤擊發钉件，亦即發生不需壓扣板機也會擊發 釘件的危險狀況，已造成使用安全性欠佳㈣題，且該搶 體内驅動氣缸上、下移動及活塞復位移動的組航件、所 需流道及氣室的配置數量較多且複雜，因此需求較大的搶 體容置空間及較高的加工成本，故亟需加以改盖。200824859 IX. The invention relates to a pneumatic nailing device. The internal setting of the nail gun can be moved downwards, and the valve opening meal is particularly smothered in a pneumatic [previous technique]. Device technology. The body of the traditional pneumatic nailing device continuously introduces high-pressure air pressure than the tail of the gun, and has a main air chamber, which can be self-sourced, and the gun body is provided with a movable or non-moving power for the nail operation. The piston for nailing can divide the cylinder into two cylinders; the cylinder chamber is provided with a cylinder chamber, and the cylinder between the outer wall of the cylinder and the body of the cylinder = the cylinder chamber of the layer and the bottom of the cylinder can be assembled by the top cylinder chamber. The ancient bottom gas chamber is provided with a pressure air on the piston which can be driven to push the nail, and the high pressure air of the main air chamber of the gun body can be introduced into the top gas back f; when the trigger is pressed, the nail is another When the trigger is released, the high-pressure air can be driven by the indoor piston to move the high-pressure air of the bottom air chamber to the bottom of the bottom layer to the middle of the cylinder. - The ritual cylinder drive piston is moved upwards. In the prior art, a movable gas No. 0 486202 patent is disclosed, which reveals that it can be seen in the US first-head valve, and the outer wall of the cylinder forms a valve ring, under: , the dynamic cylinder on the upper - the bottom gas chamber is set - the magazine; the special rainbow outer wall and the grab body, the shirt flat" will not be in the buckle trigger, the main air chamber high pressure air rolling can drive the valve ring to drive the cylinder Move down to close the upper exhaust passage of the top cylinder chamber to release pressure, and open the passage between the main air chamber and the top cylinder chamber, guide the high pressure air of the main air chamber to the top cylinder chamber through the head valve, and drive the piston down When the nail is pressed, the high-pressure air will be introduced into the bottom air chamber 200824859. When the trigger is released, the high-pressure air and the spring energy-the same as the drive valve (four) the cylinder is moved up and reset to close the main air chamber and the top cylinder chamber. And f:1 opens the upper exhaust passage of the top cylinder chamber for pressure relief. At this time, the ten-pressure air in the bottom layer can lead to the bottom gas red chamber, and the drive piston moves up and knows, and the object in the body is exposed to high-pressure air. The larger the surface area, then = The greater the force of the air pressure is; however, the surface area difference between the above-mentioned closing and the valve ring can be up and down. The release effect of the head valve is not ideal, especially when the operator accidentally throws off the ground, collides with the hard object or strikes the front nozzle, it is easy to cause the head to loosen the valve and accidentally hit the nail, that is, The dangerous situation that the nailing machine does not need to be pressed and the nail is fired, has caused the use of poor safety (4), and the group of navigation parts and required flow paths that drive the upper and lower movement of the cylinder and the reset movement of the piston. The number of air chambers is large and complicated, so there is a need for a large space for handling and a high processing cost, so it is not necessary to change the cover.
【發明内容】 一為能克服上述先前技術的問題，本發明旨在提供一種 氣動擊釘裝置，能使高壓空氣驅動氣缸保持在上移位置之 作用力大於驅動氣缸下移的作用力，以提升使用上的安八 性’並能簡化槍體内_氣紅上、下移動及活塞復位移^ 所需局壓空氣流道的複雜性，以提升氣動釘搶之操作性& 及降低產製成本為目的者。 為具體實踐上述目的，本發明係在一釘搶搶體内設置 -可動式氣缸’氣紅内設有-擊釘用的活塞，將氣紅内部 7 200824859 區，1成一頂層氣缸室與一底層氣缸室，且槍體内形成一 主氣至，以集結外界持續供入並維持一定怪壓的高壓空 氣，並於主氣室一端設有一扳機閥，接受一設於槍體上之 扳機的驅動’以啟、閉高壓空氣，氣缸頂部並形成一能啟、 1頂層氣缸室與主氣室之間通路的頭閥，同時氣缸外壁與 私體内壁之間形成一底層氣室，於活塞下移擊釘時能集結 頂層氣缸室導入高壓空氣；其中： f 俄氣缸外壁形成一閥環，能接受搶體内高壓空氣的驅動 1 Z帶動氣虹位移’以控制頭閥的啟、閉時機，且閥環能與 :體内壁間隔形成—中層氣室，以集結經由扳機閥導入的 =空氣’並於中層氣室與主氣室之間的搶體内壁上固設 或一體形成-隔環，令閥環接受中層氣室内高壓空氣驅動 之面積大於接叉主氣室内高壓空氣驅 =環之間的搶體内壁上設有—通往外界大氣的排壓= 據此，於未壓扣扳機時，高壓空氣驅動氣紅保持在上移位 =之作用力係大於驅動氣缸下移的作用力，致使頭閥不會 、*外力影響而開閥’進而防止活塞誤擊發釘件，藉以提升 釘搶在使用上的安全性。 二然而，為能再加詳述本發明，併予列舉出較佳實施例， 凊配合參照圖式而詳細說明如後述： 【實施方式】 一 π參閱圖1，揭示出本發明一種氣動擊釘裝置的實施例 1示圖，其中可見悉本發明之實施環境，包含在—釘槍之 &體、1⑽置-可向τ移動式氣缸2,氣缸2崎有〆擊釘 ㈣’輪3 ’其底部連結—用來擊發釘件的擊釘桿31，活 8 200824859 塞3上設有至少一止氣墊圈4,可將氣缸2内部區隔形成一 頂層氣缸室21與一底層氣缸室22,且該槍體1内形成有一 主氣室10，連貫於槍體1之握部11内與氣缸2外圍之間， 以集結自握部11尾端導入由外界持續供應並維持一定恆壓 的高壓空氣(如圖2之點狀區域），並於主氣室10 —端設有 一扳機閥50，接受一設於槍體1上之扳機5的驅動，以開 啟及關閉握部11之主氣室10連接至搶體1内一扳機氣道 15之間的通路；同時，該氣缸2外壁與槍體1内壁之間形 成有一底層氣室16,且氣缸2中段及底部的缸壁上各自設 有複數排氣閥孔25及複數通氣孔26,各自連通於氣缸2内 部與底層氣室16之間，並於氣缸2外壁上套設一能遮擋複 數排氣閥孔25的止氣束環6,以阻斷底層氣室16内之氣體 經由複數排氣閥孔25進入氣缸2内。 依據上述槍體1之實施環境，本發明係在氣缸2頂部 一體形成有一頭閥23(如圖1所示）；該頭閥23上設有一主 氣閥口 231及一止氣環61，且槍體1内具有一環形肋壁12, 止氣環61能於氣缸2下移前緊貼環形肋壁12(配合圖2所 示），以關閉經由主氣閥口 231連通主氣室10與頂層氣缸室 21之間的通路，止氣環61並能於氣缸2下移時脫離環形肋 壁12(配合圖3所示），而開啟該通路；同時，該頭閥23頂 部内側形成有一環狀凸肋232,槍體1頂部設有一缓衝墊 7，且搶體1頂部設有至少一上逃氣孔13與外界大氣相連 通，於氣缸2下移前（配合圖2所示），頭閥23上之環狀凸 肋232能開啟上逃氣孔13與頂層氣缸室21之間的通路， 以宣洩頂層氣缸室21内的高壓空氣，並於氣缸2下移時（配 200824859 合圖3所示），環狀凸肋232能止擋於緩衝墊7上， 該通路。 關閉 上述氣缸2外壁形成有一閥環24(如圖丨所示）， 24與搶體1内壁之間設有至少—止氣塾圈41，能與搶體1 内壁間隔形成-中層氣室14’於壓扣扳機5前(配合圖^斤 不）’中層氣室14能集結主氣室1〇經由扳機閥5〇及扳機氣 ^ 15導入的高壓空氣，且中層氣室14與主氣室1〇之間的 ，體1内壁上一體形成或固設有一隔環9,促使閥環^裸 露於中層氣室14内的面積T大於裸露在主氣室1〇内的面 積ί ’換言之，該閥環24接受中層氣室14内高壓空氣驅動 之面積τ係大於接受主氣室10内高壓空氣驅動的面積t， 因此，當主氣室10及中層氣室14 一同導入高壓空氣時， 中層氣室14内之高壓空氣會驅動閥環24帶動氣缸2上移 且保持在上移位置；同時，該隔環9與搶體丨内壁之間設 有至少一止氣墊圈42,且隔環9與閥環24之間設有至少一 止氣塾圈43，使閥環24與隔環9利用止氣墊圈41、42及 43阻隔主氣室1〇及中層氣室14内的氣體，藉以限制主氣 室1〇内高壓空氣對閥環24的施力面積，並於止氣墊圈41 及42之間的搶體丨内壁上設有一通往外界大氣的排壓孔 17在閥J衣24帶動氣缸2上、下往復移動的過程中（如圖3 及圖5所示），閥環24與隔環9之間的氣體能經由排壓孔 17連通外界大氣而降壓，使氣缸2上、下移動時更為敏捷。 為了在驅動擊钉之前，嫁保氣缸2能保持在上移位置， 亦可在中層氣室14内設置一彈簧8(如圖1所示），以輔助中 層氣室14内高壓空氣推引氣缸2保持在上移位置，且彈簧 200824859 推力係小於主氣室w内高壓空氣驅動氣缸™ 藉由上述構件之 在活塞3下移擊紅此、，可供據以實施本發明，特別是 所示），主氣室1〇 乍者^未壓扣扳機5時(如圖2 由扳機閥50及拓嫌々、阿工軋施壓於閥環24頂部，並經 堡於閥環24底部:H 15導人中層氣室14内集壓，以施 力較大，會驅動氣缸室14内高壓空氣之作用 以關閉頂層氣虹室21盘主、23 一同保持在上移位置， 層氣缸室21鱼上洮々=軋室10之間的氣路，並開啟頂 作者不慎將針搶掉^L13間的排氣通路；據此，即使操 嘴，該中層氣室Μ内之^^撞堅硬物或敲擊 其别端射 叫呆持在上移位置，^動氣缸2及其頭闕 發釘件的危險狀況，夢二生頭閥23鬆脫開閥而誤擊 當操作梅扳==釘搶在使用上的安全性。 内的閥桿，以關閉主氣室i圖^斤不），會驅動板機闕50 is :層氣室η内的高麼空氣二卜二大氣的氣路，使 :向屢空氣羅動閥環24頂 叙匕二主氣室10内 同 下移，以開啟頂層氣紅室21 ^絲2及其項間23 一 由㈤底部擊钉桿3丨下移擊她:¾分:經 ，大氣； 200824859 w如图下移至經過氣紅2内壁的複數排氣閥孔25 二氣閥〜L 25 S’頂層氣缸室21内的高壓空氣會導入複數 使頂声氧虹6推抵止氣束環6略為脫離氣缸2外壁，促 使頂層•至21内的高壓空氣導入底層氣室16内集壓。 下移麵放扳機5 _(如® 5所司，亦即活塞3 中#氣>1歧尚未上移復位期間，高脸氣回復導入 會驅動^2及頭閥23上移復位，以關 孔1、3曰祕，1與主軋室10之間的氣路，並開啟上逃氣 孔13的排賴路；此時，頂層氣缸室2 宣㈣界而降壓;同時，底層氣二 ^己回入^，-·複數通氣孔％導人底層氣缸室22 需二：：卜驅動氣缸2下移開閥及上移復位關閥所 錢至或流道的複雜度，以利於降低加工及產製成本 此外，本發明於向下移動式氣紅2頂部一體 閥23，由單一氣路控制其上、下移動時機，以大 複雜度’可有效降低產製成本，並使操作更有效率H、 限定::明較ϊ實施例而已，並非用以 狀甲Μ專利粑圍，凡其他未脫離本 ==成的等效修飾或置換’均應包含於後述之; 【圖式簡單說明】 圖i :揭示本發明一實施例的剖示圖。 壓空搶於未壓扣扳機時，搶體内集結高 12 200824859 圖3及圖4:揭示圖2之釘槍於壓扣扳機時，高壓空氣 先驅動氣缸下移後，接續驅動活塞下移擊釘的狀態剖示圖。 圖5及圖6 ·揭不圖4之釘槍於釋放板機時’南壓空氣 先驅動氣缸上移後，接續驅動活塞上移復位的狀態剖示圖。 【主要元件符號說明】 1 ...........槍體 10 ...........主氣室 11 ...........握部 12 ...........肋壁 13 ...........上逃氣孔 14 ...........中層氣室 15 ...........扳機氣道 16 ...........底層氣室 17 ...........排壓孔 2 ----------- 氣缸 21 ...........頂層氣缸室 22 ...........底層氣缸室 23 ...........頭Μ 231 ........... 主氣閥ci 232 .........凸肋 24 ...........閥環 25 ——…一排氣閥孔 26 .........通氣孔 3 ...........活塞 31 .........擊釘桿 13 200824859 4、41、42、43 -——止氣墊圈 5 ...........扳機 50 扳機閥 6 ........... 止氣束環 61 止氣環 7 缓衝墊 8 -.........彈簧 9 ...........隔環 14SUMMARY OF THE INVENTION In order to overcome the problems of the prior art described above, the present invention is directed to a pneumatic nailing device that enables a high-pressure air-driven cylinder to be held in an upwardly-moving position with a force greater than a driving cylinder to move downward to enhance The use of the amphibious 'can improve the complexity of the required pressure air flow path in the gun body _ gas red upper and lower movement and piston reset movement to improve the operability of the pneumatic nail grab & and reduce the cost of production For the purpose. In order to specifically carry out the above object, the present invention is provided in a nail robbing body-movable cylinder, which is provided with a piston for nailing, and a gas red interior 7 200824859 zone, 1 into a top cylinder chamber and a bottom layer. a cylinder chamber, and a main gas is formed in the gun body to collect high-pressure air continuously supplied to the outside and maintain a certain strange pressure, and a trigger valve is arranged at one end of the main air chamber to receive a trigger of the trigger provided on the gun body. 'In order to open and close the high-pressure air, the top of the cylinder forms a head valve that can open the passage between the top cylinder chamber and the main air chamber. At the same time, a bottom air chamber is formed between the outer wall of the cylinder and the inner wall of the cylinder, and the piston is moved downward. When the nail is nailed, the upper cylinder chamber can be assembled to introduce high-pressure air; wherein: f The outer wall of the Russian cylinder forms a valve ring, which can accept the driving of the high-pressure air in the body 1 Z to drive the gas displacement to control the opening and closing timing of the head valve, and The valve ring can be formed with: the inner wall space is formed - the middle air chamber is assembled to fix the air introduced through the trigger valve and is fixed or integrally formed on the inner wall of the middle air chamber and the main air chamber - a spacer ring The valve ring accepts the middle chamber The area of the internal high-pressure air drive is larger than the high-pressure air drive in the main air chamber of the joint. The internal wall of the grab is provided with the pressure on the inner wall. According to this, the high-pressure air drives the gas red when the trigger is not pressed. The force that is kept on the upper shift= is greater than the force that drives the cylinder to move down, so that the head valve does not open the valve due to the influence of the external force, thereby preventing the piston from accidentally hitting the nail member, thereby improving the safety of the nail grab. . In the following, the present invention will be described in detail, and the preferred embodiments will be described in detail with reference to the drawings. FIG. 1 shows a pneumatic nailing of the present invention. Embodiment 1 of the apparatus, wherein the implementation environment of the present invention can be seen, including a nail gun body, a 1 (10) set-toward τ movable cylinder 2, and a cylinder 2 sniper nail (four) 'wheel 3' The bottom joint is a nailing rod 31 for firing the nail member. The live 8 200824859 plug 3 is provided with at least one gas retaining washer 4, which can form the inner portion of the cylinder 2 into a top cylinder chamber 21 and an underlying cylinder chamber 22, And a main air chamber 10 is formed in the gun body 1, and is connected between the grip portion 11 of the gun body 1 and the periphery of the cylinder 2, and is introduced into the tail end of the grip portion 11 to introduce a high voltage continuously supplied from the outside and maintained at a constant pressure. The air (as in the dotted area of FIG. 2) is provided with a trigger valve 50 at the end of the main air chamber 10, and receives a drive of the trigger 5 provided on the gun body 1 to open and close the main air chamber of the grip portion 11. 10 is connected to the passage between the trigger air passage 15 in the body 1; at the same time, the outer wall of the cylinder 2 and the gun body 1 A bottom plenum 16 is formed between the walls, and a plurality of exhaust valve holes 25 and a plurality of vent holes 26 are respectively disposed in the middle and bottom cylinder walls of the cylinder 2, and are respectively communicated between the interior of the cylinder 2 and the bottom plenum 16 and A gas-stop ring 6 capable of blocking the plurality of exhaust valve holes 25 is disposed on the outer wall of the cylinder 2 to block the gas in the bottom gas chamber 16 from entering the cylinder 2 through the plurality of exhaust valve holes 25. According to the implementation environment of the gun body 1, the present invention integrally forms a head valve 23 (shown in FIG. 1) on the top of the cylinder 2; the head valve 23 is provided with a main air valve port 231 and a gas stop ring 61, and The gun body 1 has an annular rib wall 12, and the air stop ring 61 can be closely attached to the annular rib wall 12 (shown in FIG. 2) before the cylinder 2 moves downward to close the main air chamber 10 via the main air valve port 231. The passage between the top cylinder chambers 21, the gas stop ring 61 can be disengaged from the annular rib wall 12 (shown in Fig. 3) when the cylinder 2 is moved downward, and the passage is opened; at the same time, a ring is formed on the inner side of the top of the head valve 23. a rib 232, a cushion 7 is arranged on the top of the gun body 1, and at least one upper air vent 13 is provided on the top of the body 1 to communicate with the outside atmosphere, before the cylinder 2 moves down (shown in FIG. 2), the head The annular rib 232 on the valve 23 can open the passage between the upper escape hole 13 and the top cylinder chamber 21 to vent the high-pressure air in the top cylinder chamber 21, and when the cylinder 2 moves down (with 200824859 and Figure 3) The annular rib 232 can stop on the cushion 7, the passage. The outer wall of the cylinder 2 is closed to form a valve ring 24 (shown in FIG. )), and at least a gas-stop ring 41 is disposed between the inner wall of the cylinder 2 and the inner wall of the body 1 to be spaced apart from the inner wall of the body 1 - the intermediate air chamber 14' is The middle air chamber 14 can collect the high-pressure air introduced from the main air chamber 1 through the trigger valve 5〇 and the trigger gas 15 , and the middle air chamber 14 and the main air chamber 1〇 before the crimping trigger 5 (with the drawing) Between the inner wall of the body 1, a spacer ring 9 is integrally formed or fixed, and the area T of the valve ring ^ exposed in the middle air chamber 14 is larger than the area exposed in the main air chamber 1 '. In other words, the valve ring The area τ received by the high-pressure air in the intermediate chamber 14 is greater than the area t driven by the high-pressure air in the main chamber 10. Therefore, when the main chamber 10 and the intermediate chamber 14 are introduced together with high-pressure air, the intermediate chamber 14 The high-pressure air inside drives the valve ring 24 to move the cylinder 2 up and maintains in the up position; at the same time, at least one air-stop gasket 42 is disposed between the spacer ring 9 and the inner wall of the body, and the spacer ring 9 and the valve ring At least one air stop ring 43 is provided between the 24, so that the valve ring 24 and the spacer ring 9 are blocked by the air lock washers 41, 42 and 43 The gas in the main air chamber 1 and the middle air chamber 14 is used to limit the force application area of the high pressure air in the main air chamber 1 to the valve ring 24, and is disposed on the inner wall of the body of the body between the air lock washers 41 and 42. There is a pressure-receiving hole 17 leading to the outside atmosphere during the reciprocating movement of the cylinder J to drive the cylinder 2 (as shown in FIGS. 3 and 5), and the gas between the valve ring 24 and the spacer ring 9 can pass through The pressure-reducing hole 17 is connected to the outside atmosphere and is depressurized, so that the cylinder 2 is more agile when moving up and down. In order to maintain the clamping cylinder 2 in the upshift position before driving the nailing, a spring 8 (shown in FIG. 1) may be disposed in the middle air chamber 14 to assist the high pressure air pushing cylinder in the middle air chamber 14. 2 is maintained in the up position, and the spring 200824859 thrust system is smaller than the high pressure air driven cylinder TM in the main air chamber w. By moving the above member under the piston 3, it is possible to implement the invention, in particular ), the main air chamber 1〇乍 ^ does not press the trigger 5 (as shown in Figure 2 by the trigger valve 50 and the extension of the 々, Agong rolling pressure on the top of the valve ring 24, and through the bottom of the valve ring 24: H 15 The pressure is collected in the middle air chamber 14 to apply a large force, which will drive the high pressure air in the cylinder chamber 14 to close the top air chamber 21, and the main unit 23 is kept in the up position, and the layer cylinder chamber 21 is on the fish.洮々 = the air path between the rolling chambers 10, and the top author accidentally grabs the needle from the exhaust passage between the ^13; accordingly, even if the nozzle is operated, the middle layer of the chamber is hit by a hard object or Hit the other end of the shot and hold it in the up position, the dangerous condition of the moving cylinder 2 and its head and nails, the dream two head valve 23 loose Open the valve and accidentally hit the safety of the operation of the board == nail to grab the safety. The inner valve stem to close the main air chamber i figure ^ kg not), will drive the board machine is50 is: within the layer chamber η The air path of the air is high and the air is so that: the air is moved to the top air chamber 24 and the second air chamber 10 is moved downward to open the top air red chamber 21 ^ wire 2 and its item 23 Moved by the bottom of the nail bar 3 (5): 3⁄4 points: by, atmosphere; 200824859 w as shown in the figure, moved to the multiple exhaust valve hole 25 through the inner wall of the gas red 2 two gas valve ~ L 25 S' top cylinder chamber The high-pressure air in 21 is introduced into the plurality to make the top-oxygen oscillating rainbow 6 push against the gas-trapped ring 6 slightly away from the outer wall of the cylinder 2, so that the high-pressure air in the top layer to 21 is introduced into the bottom plenum 16 to collect pressure. Lowering the surface of the trigger 5 _ (such as the 5 Division, that is, the piston 3 in the # gas > 1) has not been moved up the reset period, the high face recovery will drive the ^2 and the head valve 23 up and reset, to close the hole 1, 3 secret, 1 and the air flow between the main rolling chamber 10, and open the exhaust road of the upper escape hole 13; at this time, the top cylinder chamber 2 declares (four) boundary and depressurize; at the same time, the bottom gas Back to ^, - · complex vents% lead the bottom cylinder chamber 22 need two:: Bu drive cylinder 2 move down the valve and move up and reset the valve to the complexity of the money or flow channel, in order to reduce processing and production In addition, the present invention is applied to the downward moving type gas red 2 top integrated valve 23, and the upper and lower moving timings are controlled by a single gas path, and the large complexity can effectively reduce the cost of production and make the operation more efficient.限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 限定 : 明 明 明 明 明 明 明 明 明 明 明 明 ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ ϊ i: reveals a cross-sectional view of an embodiment of the present invention. When the air is robbed by the un-pressed trigger, the body assembly height is 12 200824859. Figure 3 and Figure 4: When the nail gun of Fig. 2 is pressed by the trigger, the high-pressure air first drives the cylinder to move down, and then the driving piston is moved downward to move the nail. FIG. 5 and FIG. 6 · The nail gun of FIG. 4 is released on the release plate. When the machine is used, the south pressure air first drives the cylinder up, and then the drive piston moves up and resets. Fig. [Main component symbol description] 1 ...........gun body 10 .... .......main air chamber 11 ...........grip 12 ........... rib wall 13 ........... Upper escape hole 14 ........... middle air chamber 15 ........... trigger air passage 16 ........... bottom air chamber 17 .. .........Pressing hole 2 ----------- Cylinder 21 ........... Top cylinder chamber 22 ......... .. bottom cylinder chamber 23 ........... head Μ 231 ........... main air valve ci 232 ......... rib 24 .. ......... valve ring 25 - ... an exhaust valve hole 26 ... ... vent hole 3 ........... piston 31 .... ..... Studs 13 200824859 4, 41, 42, 43 - - Air washers 5 ........... Trigger 50 Trigger valves 6 .......... Air stop collar 61 air stop ring 7 cushion 8 -.........spring 9 ........... spacer 14