TWM651298U

TWM651298U - pneumatic tools

Info

Publication number: TWM651298U
Application number: TW112211913U
Authority: TW
Inventors: 丁志明; 賴泊壬
Original assignee: 海峰機械工業股份有限公司
Filing date: 2023-11-03
Publication date: 2024-02-01

Abstract

本創作關於一種氣動工具，包括：一殼體、一轉動機構及一閥體。該殼體包含有一內部空間、一進氣流道及一排氣流道，該內部空間連通該進氣流道與該排氣流道；該轉動機構包含有一氣缸與一轉子，該氣缸容設於該內部空間，該轉子以一軸線為軸轉動地定位於該氣缸之內部，一垂直該軸線之分隔線將該氣缸切分成二側部，該二側部與該轉子分別圍構出二氣室，各該側部沿該軸線之周向依序貫設有一第一轉向通道、一第二輔助排氣通道、一主排氣通道、一第一輔助排氣通道及一第二轉向通道；該閥體可切換於一第一位置及一第二位置地容設於該內部空間，包含有二入氣通道與複數堵塞部，該二入氣通道之一第一端口保持連通該進氣流道。This invention relates to a pneumatic tool, which includes: a housing, a rotating mechanism and a valve body. The housing includes an internal space, an air inlet runner and an exhaust runner. The internal space communicates the air inlet runner and the exhaust runner; the rotating mechanism includes a cylinder and a rotor, and the cylinder accommodates In the internal space, the rotor is rotatably positioned inside the cylinder with an axis as an axis. A dividing line perpendicular to the axis divides the cylinder into two side parts. The two side parts and the rotor respectively form two gas chambers. Chamber, each side portion is provided with a first turning channel, a second auxiliary exhaust channel, a main exhaust channel, a first auxiliary exhaust channel and a second steering channel in sequence along the circumferential direction of the axis; The valve body is switchable between a first position and a second position and is accommodated in the internal space. It includes two air inlet passages and a plurality of blocking parts. A first port of the two air inlet passages remains connected to the inlet air flow. road.

Description

pneumatic tools

本創作係與手工具有關，特別是有關於一種氣動工具。This creation is related to hand tools, specifically a pneumatic tool.

氣動工具係以高壓氣體作為動力來推動內部的轉子轉動來令工作頭運作的裝置，由於氣體安定性高、污染性低、輸出效能高、整體結構單純且耐用等諸多優點，故廣受加工技術領域的使用者喜愛。Pneumatic tools are devices that use high-pressure gas as power to push the internal rotor to rotate to operate the work head. Due to its high gas stability, low pollution, high output efficiency, simple and durable overall structure, etc., it is widely used in processing technology. Users in the field love it.

然而，高壓氣體的流動順暢度會大大影響到轉換成輸出動能的效率，現有的氣動工具之氣缸並無良好的氣流流道設計，導致高壓氣體容易堆積於氣缸內而產生抑制轉子轉動之氣體阻力。However, the smoothness of the flow of high-pressure gas will greatly affect the efficiency of converting it into output kinetic energy. The cylinders of existing pneumatic tools do not have good air flow channel design, which causes high-pressure gas to easily accumulate in the cylinder and generate gas resistance that inhibits the rotation of the rotor. .

因此，有必要提供一種新穎且具有進步性之氣動工具，以解決上述之問題。Therefore, it is necessary to provide a novel and progressive pneumatic tool to solve the above problems.

本創作之主要目的在於提供一種氣動工具，其氣缸透過主排氣通道、輔助排氣通道及可作為排氣用的轉向通道三者形成多階段排氣，能確保轉子轉動順暢且能高速運轉。The main purpose of this creation is to provide a pneumatic tool whose cylinder forms a multi-stage exhaust through the main exhaust channel, the auxiliary exhaust channel and the steering channel that can be used for exhaust, which can ensure smooth rotation of the rotor and high-speed operation.

為達成上述目的，本創作提供一種氣動工具，包括：一殼體、一轉動機構及一閥體。該殼體包含有一內部空間、一進氣流道及一排氣流道，該內部空間連通該進氣流道與該排氣流道；該轉動機構包含有一氣缸與一轉子，該氣缸容設於該內部空間，該轉子以一軸線為軸轉動地定位於該氣缸之內部，一垂直該軸線之分隔線將該氣缸切分成二側部，該二側部與該轉子分別圍構出二氣室，各該側部沿該軸線之周向依序貫設有一第一轉向通道、一第二輔助排氣通道、一主排氣通道、一第一輔助排氣通道及一第二轉向通道；該閥體可切換於一第一位置及一第二位置地容設於該內部空間，包含有二入氣通道與複數堵塞部，該二入氣通道之一第一端口保持連通該進氣流道；其中，當該閥體位於該第一位置時，該二入氣通道之一第二端口分別連通該二側部之第一轉向通道，該複數堵塞部遮蓋住該二側部之第二輔助排氣通道，而該二側部之主排氣通道、該二側部之第一輔助排氣通道及該二側部之第二轉向通道經由該內部空間連通該排氣流道，該轉子沿該第一轉向通道朝向該第二轉向通道之方向轉動；其中，當該閥體位於該第二位置時，該二入氣通道之第二端口分別連通該二側部之第二轉向通道，該複數堵塞部遮蓋住該二側部之第一輔助排氣通道，而該二側部之主排氣通道、該二側部之第二輔助排氣通道及該二側部之第一轉向通道經由該內部空間連通該排氣流道，該轉子沿該第二轉向通道朝向該第一轉向通道之方向轉動。In order to achieve the above purpose, this invention provides a pneumatic tool, including: a housing, a rotating mechanism and a valve body. The housing includes an internal space, an air inlet runner and an exhaust runner. The internal space communicates the air inlet runner and the exhaust runner; the rotating mechanism includes a cylinder and a rotor, and the cylinder accommodates In the internal space, the rotor is rotatably positioned inside the cylinder with an axis as an axis. A dividing line perpendicular to the axis divides the cylinder into two side parts. The two side parts and the rotor respectively form two gas chambers. Chamber, each side portion is provided with a first turning channel, a second auxiliary exhaust channel, a main exhaust channel, a first auxiliary exhaust channel and a second steering channel in sequence along the circumferential direction of the axis; The valve body is switchable between a first position and a second position and is accommodated in the internal space. It includes two air inlet passages and a plurality of blocking parts. A first port of the two air inlet passages remains connected to the inlet air flow. channel; wherein, when the valve body is in the first position, one of the second ports of the two air inlet channels is connected to the first turning channels of the two sides respectively, and the plurality of blocking parts cover the second ports of the two sides. An auxiliary exhaust channel, and the main exhaust channel of the two sides, the first auxiliary exhaust channel of the two sides, and the second turning channel of the two sides are connected to the exhaust flow channel through the internal space, and the rotor Rotate in the direction of the first turning channel toward the second turning channel; wherein, when the valve body is in the second position, the second ports of the two air inlet channels are respectively connected to the second turning channels on the two sides, The plurality of blocking parts cover the first auxiliary exhaust channels of the two sides, and the main exhaust channels of the two sides, the second auxiliary exhaust channels of the two sides and the first turning channels of the two sides Connected to the exhaust flow channel through the internal space, the rotor rotates along the second turning channel toward the first turning channel.

以下僅以實施例說明本創作可能之實施態樣，然並非用以限制本創作所欲保護之範疇，文中所提之名詞前冠以的「一」或「至少一」並非對數量進行限制，依據需求亦可為「複數」個，此數量上之變化亦為所欲保護之範圍，合先敘明。The following examples are only used to illustrate the possible implementation of this invention, but they are not intended to limit the scope of protection sought by this invention. The "one" or "at least one" before the nouns mentioned in the article do not limit the quantity. It can also be "plural" according to the requirements. This change in quantity is also the scope of the desired protection, which will be explained first.

請參考圖1至圖8，其顯示本創作之一實施例，本創作之氣動工具包括一殼體1、一轉動機構2及一閥體3。Please refer to Figures 1 to 8, which show an embodiment of the invention. The pneumatic tool of the invention includes a housing 1, a rotating mechanism 2 and a valve body 3.

該殼體1包含有一內部空間11、一進氣流道12及一排氣流道13，該內部空間11連通該進氣流道12與該排氣流道13，該進氣流道12供接收高壓氣體進入。該轉動機構2包含有一氣缸21與一轉子28，該氣缸21容設於該內部空間11，該轉子28以一軸線51為軸轉動地定位於該氣缸21之內部，一垂直該軸線51之分隔線52將該氣缸21切分成二側部211，該二側部211與該轉子28分別圍構出二氣室29，各該側部211沿該軸線51之周向依序貫設有一第一轉向通道23、一第二輔助排氣通道27、一主排氣通道25、一第一輔助排氣通道26及一第二轉向通道24。The casing 1 includes an internal space 11 , an air inlet runner 12 and an exhaust runner 13 . The internal space 11 communicates with the air inlet runner 12 and the exhaust runner 13 . The air inlet runner 12 provides Receive high-pressure gas entry. The rotating mechanism 2 includes a cylinder 21 and a rotor 28. The cylinder 21 is accommodated in the internal space 11. The rotor 28 is rotatably positioned inside the cylinder 21 with an axis 51 as an axis, and a partition is perpendicular to the axis 51. Line 52 cuts the cylinder 21 into two side parts 211. The two side parts 211 and the rotor 28 respectively form two air chambers 29. Each side part 211 is sequentially provided with a first air chamber along the circumferential direction of the axis 51. A steering channel 23, a second auxiliary exhaust channel 27, a main exhaust channel 25, a first auxiliary exhaust channel 26 and a second steering channel 24.

該閥體3可切換於一第一位置及一第二位置地容設於該內部空間11，包含有二入氣通道32與複數堵塞部33，該二入氣通道32之一第一端口321保持連通該進氣流道12。詳細地說，當該閥體3位於該第一位置時，該二入氣通道32之一第二端口322分別連通該二側部211之第一轉向通道23，該複數堵塞部33遮蓋住該二側部211之第二輔助排氣通道27，而該二側部211之主排氣通道25、該二側部211之第一輔助排氣通道26及該二側部211之第二轉向通道24經由該內部空間11連通該排氣流道13，該轉子28沿該第一轉向通道23朝向該第二轉向通道24之方向轉動。更詳細地說，由該第一轉向通道23進入該氣缸21的高壓氣體會驅使靠近該第一轉向通道23的該轉子28之扇葉朝向該第二轉向通道24移動，該轉子28之扇葉於移動過程中會推動位於前方的氣體依序由該主排氣通道25、該第一輔助排氣通道26及該第二轉向通道24排出，多階段式的排出機制能有效確保氣體不會堆積而能讓該轉子28之轉動順暢，以達到能量高轉換率、該轉子28能維持高速運轉之狀態。The valve body 3 is switchable between a first position and a second position and is accommodated in the internal space 11. It includes two air inlet channels 32 and a plurality of blocking parts 33. One of the first ports 321 of the two air inlet channels 32 is Keep the inlet runner 12 connected. In detail, when the valve body 3 is in the first position, one of the second ports 322 of the two air inlet passages 32 is connected to the first turning passage 23 of the two side parts 211 respectively, and the plurality of blocking parts 33 cover the The second auxiliary exhaust channel 27 of the two side parts 211, the main exhaust channel 25 of the two side parts 211, the first auxiliary exhaust channel 26 of the two side parts 211 and the second turning channel of the two side parts 211 24 communicates with the exhaust flow channel 13 through the internal space 11 , and the rotor 28 rotates along the first turning channel 23 toward the second turning channel 24 . In more detail, the high-pressure gas entering the cylinder 21 from the first turning channel 23 will drive the fan blades of the rotor 28 close to the first turning channel 23 to move toward the second turning channel 24, and the fan blades of the rotor 28 will move toward the second turning channel 24. During the movement, the gas in front will be pushed out of the main exhaust channel 25, the first auxiliary exhaust channel 26 and the second turning channel 24 in sequence. The multi-stage exhaust mechanism can effectively ensure that the gas will not accumulate. This allows the rotor 28 to rotate smoothly to achieve a high energy conversion rate, and the rotor 28 can maintain a high-speed operation state.

反之，當該閥體3位於該第二位置時，該二入氣通道32之第二端口322分別連通該二側部211之第二轉向通道24，該複數堵塞部33遮蓋住該二側部211之第一輔助排氣通道26，而該二側部211之主排氣通道25、該二側部211之第二輔助排氣通道27及該二側部211之第一轉向通道23經由該內部空間11連通該排氣流道13，該轉子28沿該第二轉向通道24朝向該第一轉向通道23之方向轉動，該轉子28於轉動過程中，高壓氣流會由該主排氣通道25、該第二輔助排氣通道27及該第一轉向通道23排出。On the contrary, when the valve body 3 is in the second position, the second ports 322 of the two air inlet passages 32 are respectively connected to the second turning passages 24 of the two side parts 211, and the plurality of blocking parts 33 cover the two side parts. The first auxiliary exhaust channel 26 of the two side parts 211, and the main exhaust channel 25 of the two side parts 211, the second auxiliary exhaust channel 27 of the two side parts 211 and the first turning channel 23 of the two side parts 211 pass through the The internal space 11 is connected to the exhaust flow channel 13 , and the rotor 28 rotates along the second turning channel 24 toward the first turning channel 23 . During the rotation of the rotor 28 , high-pressure airflow will flow from the main exhaust channel 25 , the second auxiliary exhaust channel 27 and the first steering channel 23 are discharged.

該氣缸21另包含有位於相反側之一內壁面221與一外壁面222，該內壁面221與該轉子28共同圍構出該二氣室29，該主排氣通道25於該外壁面222之開口面積係大於該第一轉向通道23於該外壁面222之開口面積，換言之，該氣缸21提供氣體之最大流出量係大於最大流入量，能確保排氣順暢度。並且，該第一輔助排氣通道26於該外壁面222之開口面積等於該第二輔助排氣通道27於該外壁面222之開口面積，以確保該轉子28於正轉或反轉時能有相同的輔助排氣功效。此外，該第一轉向通道23於該外壁面222之開口面積等於該第二轉向通道24於該外壁面222之開口面積，以確保該轉子28於正轉或反轉時，該第一轉向通道23與該第二轉向通道24皆能提供相同的進氣量與排氣量；其中，該第一轉向通道23於該外壁面222之開口面積係大於該第一輔助排氣通道26於該外壁面222之開口面積。The cylinder 21 also includes an inner wall 221 and an outer wall 222 located on opposite sides. The inner wall 221 and the rotor 28 together form the two air chambers 29 . The main exhaust channel 25 is between the outer wall 222 The opening area is larger than the opening area of the first turning channel 23 on the outer wall surface 222. In other words, the maximum outflow volume of gas provided by the cylinder 21 is greater than the maximum inflow volume, which can ensure exhaust smoothness. Moreover, the opening area of the first auxiliary exhaust channel 26 on the outer wall 222 is equal to the opening area of the second auxiliary exhaust channel 27 on the outer wall 222 to ensure that the rotor 28 can rotate forward or reversely. The same auxiliary exhaust function. In addition, the opening area of the first turning channel 23 on the outer wall 222 is equal to the opening area of the second turning channel 24 on the outer wall 222 to ensure that when the rotor 28 rotates forward or reverse, the first turning channel 23 and the second turning channel 24 can provide the same air intake and exhaust volume; wherein, the opening area of the first turning channel 23 on the outer wall 222 is larger than that of the first auxiliary exhaust channel 26 on the outer wall. The opening area of wall 222.

具體地說，該氣缸21另包含有一筒體212及一蓋體213，該蓋體213蓋設於該筒體212之一端，該第一轉向通道23及該第二轉向通道24分別由該蓋體213沿該軸線51延伸至該筒體212而連通該氣室29，該第一輔助排氣通道26與該第二輔助排氣通道27分別為沿該軸線51貫設於該蓋體213的貫孔，該主排氣通道25垂直該軸線51地貫設於該筒體212，該第一輔助排氣通道26與該第二輔助排氣通道27採用與該主排氣通道25不同方向之排氣，能確保氣體由該氣缸21進入該內部空間11時不會有堵塞之情況發生。並且，該第一輔助排氣通道26、該第二輔助排氣通道27及該主排氣通道25之長度較小，氣體能夠快速地排放至該內部空間11。Specifically, the cylinder 21 further includes a cylinder 212 and a cover 213. The cover 213 covers one end of the cylinder 212. The first turning channel 23 and the second turning channel 24 are respectively connected by the cover. The body 213 extends along the axis 51 to the cylinder 212 and communicates with the air chamber 29 . The first auxiliary exhaust channel 26 and the second auxiliary exhaust channel 27 are respectively provided through the cover 213 along the axis 51 . Through holes, the main exhaust channel 25 runs through the cylinder 212 perpendicular to the axis 51 , and the first auxiliary exhaust channel 26 and the second auxiliary exhaust channel 27 adopt different directions from the main exhaust channel 25 . Exhaust can ensure that there will be no blockage when the gas enters the internal space 11 from the cylinder 21. Moreover, the lengths of the first auxiliary exhaust channel 26 , the second auxiliary exhaust channel 27 and the main exhaust channel 25 are small, and the gas can be quickly discharged to the internal space 11 .

更具體地說，該主排氣通道25包含有複數排氣口251，該複數排氣口251係沿該軸線51之延伸方向呈等間隔配置，而能有均勻將氣體排至該內部空間11。並且，該第一輔助排氣通道26與第二輔助排氣通道27分別至該軸線51的最短距離相等，以確保該轉子28於正轉或反轉時能有相同的輔助排氣功效。此外，各該排氣口251至該軸線51的最短距離係大於該第一輔助排氣通道26至該軸線51的最短距離，而能有分流於不同位置進行排氣之功效。More specifically, the main exhaust channel 25 includes a plurality of exhaust ports 251, which are arranged at equal intervals along the extension direction of the axis 51, so as to uniformly discharge gas to the internal space 11. . Furthermore, the shortest distances from the first auxiliary exhaust passage 26 and the second auxiliary exhaust passage 27 to the axis 51 are equal to ensure that the rotor 28 has the same auxiliary exhaust effect when rotating forward or reversely. In addition, the shortest distance from each exhaust port 251 to the axis 51 is greater than the shortest distance from the first auxiliary exhaust channel 26 to the axis 51, so that the exhaust can be diverted to different locations.

值得一提的是，該閥體3與該轉子28係呈同軸配置，而能有較統一的基準以利結構設計及組裝，該閥體3係可轉動地容設於該內部空間11，使用者透過轉動之方式可快速切換該閥體3且於切換過程中所需的空間裕度較小。It is worth mentioning that the valve body 3 and the rotor 28 are coaxially arranged, which can have a more unified basis to facilitate structural design and assembly. The valve body 3 is rotatably accommodated in the internal space 11, and can be used The valve body 3 can be quickly switched by rotating, and the space margin required during the switching process is small.

較佳地，該氣動工具另包含有一旋鈕4，該旋鈕4可轉動地定位於該殼體1之後端且連接該閥體3，以讓使用者能透過該旋鈕4迅速控制該閥體3。Preferably, the pneumatic tool further includes a knob 4, which is rotatably positioned at the rear end of the housing 1 and connected to the valve body 3, so that the user can quickly control the valve body 3 through the knob 4.

於本實施例中，該閥體3另包含有一本體31及複數支撐腳部34，該二入氣通道32係貫設於該本體31，該本體31阻斷該氣缸21經由該內部空間11連通該進氣流道12，以使該氣缸21僅能經由該內部空間11連通該排氣流道13，該複數支撐腳部34與該複數堵塞部33係分別凸設於該本體31以壓抵於該蓋體213。In this embodiment, the valve body 3 further includes a body 31 and a plurality of supporting legs 34. The two air inlet channels 32 are penetrated through the body 31. The body 31 blocks the communication between the cylinder 21 through the internal space 11. The intake runner 12 allows the cylinder 21 to communicate with the exhaust runner 13 only through the internal space 11. The plurality of support legs 34 and the plurality of blocking portions 33 are respectively protruded from the body 31 to press against it. on the cover 213.

較佳地，各該入氣通道32係自該第一端口321朝向該第二端口322漸縮，該第一端口321能有較大面積接收高壓氣體，進而於縮小的該第二端口322加速進入該氣缸21；其中，該第二端口322之開口大小不小於該第一轉向通道23於該氣缸21之外壁面222之開口大小。Preferably, each of the air inlet channels 32 is tapered from the first port 321 toward the second port 322. The first port 321 can have a larger area to receive high-pressure gas, thereby accelerating the narrowed second port 322. Entering the cylinder 21; wherein, the opening size of the second port 322 is not smaller than the opening size of the first turning channel 23 on the outer wall 222 of the cylinder 21.

1:殼體 11:內部空間 12:進氣流道 13:排氣流道 2:轉動機構 21:氣缸 211:側部 212:筒體 213:蓋體 221:內壁面 222:外壁面 23:第一轉向通道 24:第二轉向通道 25:主排氣通道 251:排氣口 26:第一輔助排氣通道 27:第二輔助排氣通道 28:轉子 29:氣室 3:閥體 31:本體 32:入氣通道 321:第一端口 322:第二端口 33:堵塞部 34:支撐腳部 4:旋鈕 51:軸線 52:分隔線 1: Shell 11:Internal space 12:Intake runner 13:Exhaust runner 2: Rotating mechanism 21:Cylinder 211: Side 212:Cylinder 213: Cover 221:Inner wall surface 222:Outer wall surface 23: First turning channel 24:Second turning channel 25:Main exhaust channel 251:Exhaust port 26:First auxiliary exhaust channel 27: Second auxiliary exhaust channel 28:Rotor 29:Air chamber 3: Valve body 31:Ontology 32:Air inlet channel 321: first port 322: Second port 33: Blockage Department 34: Support the feet 4: Knob 51:Axis 52:Divider line

圖1為本創作一實施例之立體圖。圖2為本創作一實施例之分解圖。圖3為本創作一實施例之閥體位於第一位置之側視剖面圖。圖4為本創作一實施例之閥體位於第一位置之後視剖面圖。圖5為本創作一實施例之閥體位於第一位置之另一位置之側視剖面圖。圖6為本創作一實施例之閥體位於第一位置之另一位置之後視剖面圖。圖7為本創作一實施例之閥體位於第一位置之又一位置之後視剖面圖。圖8為本創作一實施例之閥體位於第二位置之後視剖面圖。 Figure 1 is a perspective view of an embodiment of this invention. Figure 2 is an exploded view of an embodiment of this invention. Figure 3 is a side cross-sectional view of the valve body in the first position according to an embodiment of the present invention. Figure 4 is a rear cross-sectional view of the valve body in the first position according to an embodiment of the present invention. Figure 5 is a side cross-sectional view of the valve body in another position from the first position according to an embodiment of the present invention. Figure 6 is a rear cross-sectional view of the valve body in another position of the first position according to an embodiment of the present invention. Figure 7 is a rear cross-sectional view of the valve body in another position other than the first position according to an embodiment of the present invention. Figure 8 is a rear cross-sectional view of the valve body in the second position according to an embodiment of the present invention.

11:內部空間 11:Internal space

12:進氣流道 12:Intake runner

23:第一轉向通道 23: First turning channel

24:第二轉向通道 24:Second turning channel

26:第一輔助排氣通道 26:First auxiliary exhaust channel

27:第二輔助排氣通道 27: Second auxiliary exhaust channel

322:第二端口 322: Second port

33:堵塞部 33: Blockage Department

34:支撐腳部 34: Support the feet

Claims

A pneumatic tool consisting of: A shell includes an internal space, an air inlet runner and an exhaust runner, the internal space connecting the air inlet runner and the exhaust runner; A rotating mechanism includes a cylinder and a rotor. The cylinder is accommodated in the internal space. The rotor is rotatably positioned inside the cylinder with an axis as an axis. A dividing line perpendicular to the axis divides the cylinder into two sides. part, the two side parts and the rotor respectively form two air chambers, and each side part is provided with a first steering channel, a second auxiliary exhaust channel, and a main exhaust channel in sequence along the circumferential direction of the axis. , a first auxiliary exhaust channel and a second steering channel; and A valve body is switchable between a first position and a second position and is accommodated in the internal space. It includes two air inlet passages and a plurality of blocking parts. One of the first ports of the two air inlet passages remains connected to the inlet air. flow channel; Wherein, when the valve body is in the first position, one of the second ports of the two air inlet passages is connected to the first steering passages of the two side parts respectively, and the plurality of blocking parts cover the second auxiliary exhaust pipes of the two side parts. air passage, and the main exhaust passage of the two sides, the first auxiliary exhaust passage of the two sides and the second turning passage of the two sides are connected to the exhaust flow passage through the internal space, and the rotor moves along the The first turning channel rotates toward the direction of the second turning channel; Wherein, when the valve body is in the second position, the second ports of the two air inlet passages are respectively connected to the second turning passages of the two side parts, and the plurality of blocking parts cover the first auxiliary exhaust of the two side parts. channel, and the main exhaust channel of the two sides, the second auxiliary exhaust channel of the two sides, and the first turning channel of the two sides are connected to the exhaust flow channel through the internal space, and the rotor moves along the third The second turning channel rotates toward the direction of the first turning channel.

The pneumatic tool according to claim 1, wherein the cylinder further includes a cylinder and a cover, the cover is provided at one end of the cylinder, and the first turning channel and the second turning channel are respectively covered by the cover. The body extends along the axis to the cylinder and communicates with the air chamber. The first auxiliary exhaust channel and the second auxiliary exhaust channel are respectively through holes extending through the cover body along the axis. The main exhaust channel Perpendicular to the axis and extending through the cylinder.

The pneumatic tool according to claim 2, wherein the main exhaust channel includes a plurality of exhaust ports, and the plurality of exhaust ports are arranged at equal intervals along the extension direction of the axis.

The pneumatic tool according to claim 1, wherein the cylinder further includes an inner wall surface and an outer wall surface located on opposite sides, the inner wall surface and the rotor jointly form the two air chambers, and the main exhaust channel is located in the The opening area of the outer wall is larger than the opening area of the first turning channel on the outer wall, and the opening area of the first auxiliary exhaust channel on the outer wall is equal to the opening area of the second auxiliary exhaust channel on the outer wall.

The pneumatic tool as claimed in claim 1, wherein the cylinder further includes an inner wall surface and an outer wall surface located on opposite sides, the inner wall surface and the rotor together form the two air chambers, and the first turning channel is located in the The opening area of the outer wall surface is equal to the opening area of the second turning channel on the outer wall surface, and the opening area of the first turning channel on the outer wall surface is larger than the opening area of the first auxiliary exhaust channel on the outer wall surface.

The pneumatic tool as claimed in claim 1, wherein each of the air inlet passages is tapered from the first port toward the second port.

The pneumatic tool according to claim 6, wherein the opening size of the second port is not smaller than the opening size of the first turning channel on an outer wall surface of the cylinder.

The pneumatic tool according to any one of claims 1 to 7, wherein the valve body and the rotor are arranged coaxially, and the valve system is rotatably accommodated in the internal space.

The pneumatic tool according to claim 8 further includes a knob, which is rotatably positioned at the rear end of the housing and connected to the valve body.

The pneumatic tool according to claim 3, wherein the cylinder further includes an inner wall surface and an outer wall surface located on opposite sides, the inner wall surface and the rotor jointly form the two air chambers, and the main exhaust channel is located in the The opening area of the outer wall is larger than the opening area of the first turning channel on the outer wall, and the opening area of the first auxiliary exhaust channel on the outer wall is equal to the opening area of the second auxiliary exhaust channel on the outer wall; The opening area of the first turning channel on the outer wall is equal to the opening area of the second turning channel on the outer wall. The opening area of the first turning channel on the outer wall is larger than the opening area of the first auxiliary exhaust channel on the outer wall. The opening area of the wall; each air inlet channel is tapered from the first port toward the second port; the opening size of the second port is not smaller than the opening size of the first turning channel on the outer wall of the cylinder; the valve The body and the rotor are coaxially arranged, and the valve system is rotatably accommodated in the internal space; the pneumatic tool further includes a knob, which is rotatably positioned at the rear end of the housing and connected to the valve body; the valve body It also includes a body and a plurality of support legs. The two air inlet channels are penetrated through the body. The body blocks the cylinder from connecting to the air inlet flow channel through the internal space, so that the cylinder can only communicate through the internal space. The exhaust flow channel, the plurality of supporting legs and the plurality of blocking parts are respectively protruded from the body to press against the cover; the first auxiliary exhaust channel and the second auxiliary exhaust channel are respectively connected to the axis. The shortest distances are equal, and the shortest distance from each exhaust port to the axis is greater than the shortest distance from the first auxiliary exhaust channel to the axis.