TW202126439A

TW202126439A - Pneumatic wrench being able to adjust the angle according to the user's needs, thus improving the smoothness of use and greatly increasing the tolerance of the application

Info

Publication number: TW202126439A
Application number: TW109100059A
Authority: TW
Inventors: 何全政
Original assignee: 越崎企業股份有限公司
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2021-07-16
Also published as: TWI711511B

Abstract

The pneumatic wrench of the present invention includes a handle, a tool head, and a shaft. The handle has a main body, two extension walls extending at intervals from one end of the main body, an engagement slot formed between the two extension walls, and a first airway provided inside the main body and the two extension walls. The tool head includes a head, a neck extending into the engagement slot from the head, and a second airway set inside the head and the neck. The shaft passes through the handle and the tool head, so that the tool head can swing relative to the handle. The shaft has a rod body, a shaft hole arranged inside the rod body, two first through holes arranged on the rod body, and a second through hole arranged on the rod body. The first through holes and the second through hole both connect with the shaft hole. As a result, the first airway of the handle is connected to the second airway through the first through holes, the shaft hole, and the second through hole. The pneumatic wrench can adjust the angle according to the user's needs, improving the smoothness of use and greatly increasing the tolerance of the application.

Description

氣動扳手Pneumatic wrench

本發明與氣動扳手有關，特別是指一種可依現場狀況彈性調整角度的氣動扳手。The present invention relates to a pneumatic wrench, and particularly refers to a pneumatic wrench that can adjust the angle elastically according to site conditions.

一般的氣動扳手包含有一握把、一氣動馬達、一進氣孔、一調整鈕、以及一輸出軸與該氣動馬達連接，其中該進氣孔設於該握把且與該氣動馬達連通，氣體經由該進氣孔進到該氣動馬達並作為該氣動馬達的動力來源，使用者藉由調整該調整鈕可切換氣體進到該氣動馬達中之流動方向，進而可調整該輸出軸的旋轉方向為正轉或逆轉。A general pneumatic wrench includes a handle, an air motor, an air inlet, an adjustment button, and an output shaft connected to the air motor. The air inlet is provided in the handle and communicated with the air motor. It enters the air motor through the air inlet and serves as the power source of the air motor. By adjusting the adjustment knob, the user can switch the flow direction of the air entering the air motor, and then can adjust the rotation direction of the output shaft as Forward or reverse.

現有的氣動扳手雖已有可調整正逆轉以及輕量化的結構設計，然而，由於該輸出軸的延伸方向約與該握把的延伸方向垂直，使用者於實際操作時，需要擺動其手腕的角度以使該輸出軸的延伸方向符合施工位置，惟此舉不僅大幅降低使用的順暢度，亦容易造成使用者的職業傷害，甚至有些狹小空間不允許氣動扳手調整角度，以致無法順利施工。因此，如何改善上述缺失，即成為本領域技術人員欲解決的技術問題。Although the existing pneumatic wrench has a structural design that can adjust the forward and reverse rotation and lightweight, however, since the extension direction of the output shaft is approximately perpendicular to the extension direction of the grip, the user needs to swing the angle of his wrist during actual operation In order to make the extension direction of the output shaft conform to the construction position, this will not only greatly reduce the smoothness of use, but also easily cause occupational injuries to the user. Even some small spaces do not allow the pneumatic wrench to adjust the angle, so that smooth construction cannot be performed. Therefore, how to improve the above deficiencies becomes a technical problem to be solved by those skilled in the art.

本發明之目的在於提供一種氣動扳手，可依使用者需求調整角度，並可提升使用順暢度。本發明之另一目的在於提供一種氣動扳手，可依施工現場狀況彈性調整角度，大幅增加應用場合容許度。The purpose of the present invention is to provide a pneumatic wrench, which can adjust the angle according to the needs of users and improve the smoothness of use. Another object of the present invention is to provide a pneumatic wrench, which can adjust the angle flexibly according to the conditions of the construction site, greatly increasing the tolerance of the application occasion.

為了達成上述目的，本發明之氣動扳手包含有一握把、一工具頭以及一轉軸，該握把具有一主體、二延伸壁互相間隔地由該主體一端延伸而出、一卡接槽形成於該二延伸壁之間、一第一氣道設於該主體與該二延伸壁內部、以及二第一樞孔穿設於該二延伸壁且與該第一氣道連通，該工具頭包含有一頭部、一頸部由該頭部延伸而出且伸入該卡接槽中、一第二氣道設於該頭部與該頸部內部、以及一第二樞孔穿設於該頸部且與該第二氣道連通，該轉軸穿設於該握把之第一樞孔及該工具頭之第二樞孔，令該工具頭能相對該握把旋擺，該轉軸具有一桿體、一軸孔設於該桿體內部、二第一環槽設於該桿體外周緣且位置對應於該二延伸壁、一第二環槽設於該桿體外周緣且位置對應於該頸部、二第一通孔設於該桿體且位於該第一環槽、以及一第二通孔設於該桿體且位於該第二環槽，該等第一通孔與該第二通孔皆與該軸孔連通，藉此，該握把之第一氣道經由該等第一環槽、該等第一通孔、該軸孔以及該第二通孔連通該工具頭之第二氣道；藉此，該氣動扳手可依使用者需求調整角度，並可提升使用順暢度，同時大幅增加應用場合容許度。In order to achieve the above-mentioned object, the pneumatic wrench of the present invention includes a handle, a tool head, and a rotating shaft. Between the two extension walls, a first air passage is provided inside the main body and the two extension walls, and two first pivot holes pass through the two extension walls and communicate with the first air passage. The tool head includes a head, A neck extends from the head and extends into the clamping groove, a second airway is provided inside the head and the neck, and a second pivot hole penetrates the neck and connects with the first airway. The two air passages communicate with each other. The shaft passes through the first pivot hole of the handle and the second pivot hole of the tool head so that the tool head can swing relative to the handle. The shaft has a rod body and a shaft hole arranged in Inside the rod body, two first ring grooves are provided on the outer periphery of the rod body and are positioned corresponding to the two extension walls, a second ring groove is provided on the outer periphery of the rod body and positions are corresponding to the neck, and two first through holes are provided On the rod body and located in the first ring groove, and a second through hole is provided on the rod body and located in the second ring groove, the first through holes and the second through holes are both connected with the shaft hole, Thereby, the first air passage of the handle communicates with the second air passage of the tool head through the first ring grooves, the first through holes, the shaft hole, and the second through hole; The angle can be adjusted according to the user's needs, and the smoothness of use can be improved, and at the same time, the tolerance of the application can be greatly increased.

以下藉由一較佳實施例配合圖式，詳細說明本發明的技術內容及特徵，如第1、2圖所示，係本發明一較佳實施例所提供之氣動扳手1，包含有一握把10、一工具頭20、以及一轉軸30穿設於該握把10及該工具頭20。Hereinafter, the technical content and features of the present invention will be described in detail with a preferred embodiment with drawings. As shown in Figures 1 and 2, the pneumatic wrench 1 provided by a preferred embodiment of the present invention includes a handle 10. A tool head 20 and a rotating shaft 30 pass through the handle 10 and the tool head 20.

請同時參閱第3圖，該握把10具有一棒狀的主體11、二延伸壁13互相間隔地由該主體11之頂端向上延伸而出、一卡接槽15形成於該二延伸壁13之間、一第一氣道16設於該主體11與該二延伸壁13內部、以及二第一樞孔19沿左右方向穿設於該二延伸壁13且與該第一氣道16連通，其中，該第一氣道16包含有一主流道17以及二支流道18，該主流道17由該主體11的底端伸入並向上延伸，該二支流道18與該主流道17的頂端連通且由該主體11延伸至該二延伸壁13，各該支流道18與各該第一樞孔19連通，該二第一樞孔19位在同一軸線L上且該軸線L約與該主體11的延長方向垂直。Please refer to FIG. 3 at the same time. The handle 10 has a rod-shaped main body 11, two extension walls 13 are spaced apart from each other and extend upward from the top end of the main body 11, and a clamping groove 15 is formed in the two extension walls 13 A first air passage 16 is provided inside the main body 11 and the two extension walls 13, and two first pivot holes 19 pass through the two extension walls 13 in the left-right direction and communicate with the first air passage 16, wherein the The first airway 16 includes a main flow channel 17 and two branch flow channels 18. The main flow channel 17 extends from the bottom end of the main body 11 and extends upward. The two branch flow channels 18 communicate with the top end of the main flow channel 17 and are connected by the main Extending to the two extension walls 13, each of the branch channels 18 communicates with each of the first pivot holes 19, the two first pivot holes 19 are located on the same axis L and the axis L is approximately perpendicular to the extension direction of the main body 11.

請同時參閱第4圖，該工具頭20包含有一頭部21、一頸部23由該頭部21向下延伸而出且伸入該卡接槽15中、一第二氣道25設於該頭部21與該頸部23內部、一第二樞孔27沿左右方向穿設於該頸部23且與該第二氣道25連通、一輸出軸29由該頭部21朝前方延伸而出、以及一氣動馬達40設於該頭部21內且與該輸出軸29連接，該第二氣道25係向上連通該氣動馬達40，該輸出軸29可受該氣動馬達40驅動而旋轉，其中，若以0∘代表工具頭20與握把10的主體11平行，該工具頭20能相對該握把10旋擺角度為-60∘~60∘，亦即可向前或向後旋擺。Please refer to FIG. 4 at the same time. The tool head 20 includes a head 21, a neck 23 extending downward from the head 21 and extending into the clamping groove 15, and a second airway 25 is provided on the head. The part 21 and the inside of the neck 23, a second pivot hole 27 penetrates the neck 23 in the left-right direction and communicates with the second airway 25, an output shaft 29 extends forward from the head 21, and An air motor 40 is arranged in the head 21 and connected to the output shaft 29, the second air passage 25 is connected upwardly with the air motor 40, and the output shaft 29 can be driven by the air motor 40 to rotate. 0∘ represents that the tool head 20 is parallel to the main body 11 of the grip 10, and the tool head 20 can swing at an angle of -60∘~60∘ relative to the grip 10, that is, it can swing forward or backward.

如第5、6圖所示，該轉軸30穿設於該握把10之第一樞孔19及該工具頭20之第二樞孔27，令該工具頭20能相對該握把10前後旋擺，亦即，該工具頭20係藉由該轉軸30樞設於該握把10，而在該工具頭20相對該握把10旋擺的過程中，該輸出軸29之軸心291保持垂直於該轉軸30。該轉軸30具有一桿體31、一軸孔32設於該桿體31內部、二第一環槽33設於該桿體31外周緣且位置對應於該二延伸壁13、一第二環槽35設於該桿體31外周緣且位置對應於該頸部23、四第一通孔34設於該桿體31且分別位於該二第一環槽33、二第二通孔36設於該桿體31且位於該第二環槽35、以及六第三環槽37設於該桿體31外周緣，該桿體31的延長方向係垂直該握把10之主體11的延長方向，該軸孔32係由該桿體31之一端凹入，由第6圖可見，該軸孔32之左端為開放端321，該軸孔32之右端為封閉端322，該等第一通孔34與該第二通孔36皆與該軸孔32連通，該四第一通孔34係兩兩相對設置且分別設於該二第一環槽33，該二第二通孔36係相對設置且位於該第二環槽35，該等第三環槽37係分別設於該第一、二環槽33, 35之兩側，其中該開放端321設有一塞件39，藉以使該軸孔32之兩端封閉，於其他實施例中，該軸孔32之兩端可皆為封閉端而該塞件39則省略不設。As shown in Figures 5 and 6, the shaft 30 passes through the first pivot hole 19 of the handle 10 and the second pivot hole 27 of the tool head 20, so that the tool head 20 can be rotated back and forth relative to the handle 10 Pendulum, that is, the tool head 20 is pivoted to the handle 10 by the rotating shaft 30, and during the process of the tool head 20 rotating relative to the handle 10, the axis 291 of the output shaft 29 remains vertical于此轴30。 On the shaft 30. The rotating shaft 30 has a rod body 31, a shaft hole 32 disposed inside the rod body 31, and two first ring grooves 33 are disposed on the outer periphery of the rod body 31 and are positioned corresponding to the two extending walls 13 and a second ring groove 35 Located on the outer periphery of the rod body 31 and corresponding to the neck portion 23, four first through holes 34 are provided on the rod body 31 and respectively located in the two first ring grooves 33 and the second second through holes 36 are provided on the rod The body 31 is located in the second ring groove 35 and the six third ring grooves 37 are provided on the outer periphery of the rod body 31, the extension direction of the rod body 31 is perpendicular to the extension direction of the main body 11 of the handle 10, and the shaft hole 32 is recessed from one end of the rod body 31. As can be seen from Figure 6, the left end of the shaft hole 32 is an open end 321, and the right end of the shaft hole 32 is a closed end 322. The first through holes 34 and the first through holes 34 are The two through holes 36 are connected to the shaft hole 32. The four first through holes 34 are arranged opposite to each other and are respectively arranged in the two first ring grooves 33, and the two second through holes 36 are arranged opposite to and located in the first ring groove 33. Two ring grooves 35, the third ring grooves 37 are respectively provided on both sides of the first and second ring grooves 33, 35, wherein the open end 321 is provided with a plug 39, so that both ends of the shaft hole 32 Closed. In other embodiments, both ends of the shaft hole 32 may be closed ends and the plug 39 is omitted.

需要說明的是，於本實施例中，該等第一通孔34之位置約對應於該二支流道18，該第二通孔36之位置約對應於該第二氣道25，於其他實施例中，該等第一、二通孔34, 36的數量及位置可有其他變化，該等第一通孔34只要至少兩個且位於各該第一環槽33，該第二通孔36只要至少一個且位於該第二環槽35，且該等第一環槽33的位置對應於該等支流道18，該第二環槽35的位置對應於該第二氣道25，使氣體可由該握把10的該二支流道18傳送至該工具頭20的該第二氣道25即可。It should be noted that in this embodiment, the positions of the first through holes 34 approximately correspond to the two branch passages 18, and the positions of the second through holes 36 approximately correspond to the second air passage 25. In other embodiments, The number and positions of the first and second through holes 34, 36 can have other changes. There are only two first through holes 34 and they are located in each of the first ring grooves 33, and the second through holes 36 only need to be At least one is located in the second annular groove 35, and the position of the first annular grooves 33 corresponds to the branch passages 18, and the position of the second annular groove 35 corresponds to the second air passage 25, so that the gas can be held by the It is sufficient to transfer the two branch flow passages 18 of 10 to the second air passage 25 of the tool head 20.

於本實施例中，為確實防止氣體由該等第一、二環槽33, 37之兩側散失，更有六氣密環38套設於該轉軸30的桿體31，且該等氣密環38係分別容設於該等第三環槽37中並以其外周緣貼抵於該第一樞孔19及該第二樞孔27的內緣。In this embodiment, in order to prevent gas from escaping from both sides of the first and second ring grooves 33, 37, there are six airtight rings 38 sleeved on the rod 31 of the rotating shaft 30, and the airtight The rings 38 are respectively accommodated in the third ring grooves 37 and abut the inner edges of the first pivot hole 19 and the second pivot hole 27 with their outer peripheral edges.

如第7圖所示，係該工具頭20相對該該握把10旋擺至60∘時的立體圖，於實際操作時，氣體經由該第一氣道16之主流道17、二支流道18，通過該二第一環槽33、該二第一通孔34進到該軸孔32中，接著氣體由該軸孔32經該第二通孔36、該第二環槽35流至該工具頭20之第二氣道25，即可驅動位於該工具頭20頭部21的該氣動馬達40之轉子42。由於氣體係經由該第一環槽33流至該二第一通孔34且經由該第二環槽35流至該工具頭20之第二氣道25，因此，不論該工具頭20旋擺至任何角度，氣體都能順利由該握把10供應至該工具頭20之氣動馬達40。藉此，該氣動扳手1可依使用者需求或施工現場狀況彈性調整該工具頭20的角度，不僅可提升使用順暢度，更能適應各種環境，特別是狹小空間，大幅增加應用場合容許度。As shown in Figure 7, it is a perspective view of the tool head 20 being swung to 60∘ with respect to the handle 10. In actual operation, the gas passes through the main passage 17 and the second branch passage 18 of the first air passage 16 The two first annular grooves 33 and the two first through holes 34 enter the shaft hole 32, and then the gas flows from the shaft hole 32 through the second through hole 36 and the second annular groove 35 to the tool head 20 The second air passage 25 can drive the rotor 42 of the air motor 40 located at the head 21 of the tool head 20. Since the air system flows through the first ring groove 33 to the two first through holes 34 and through the second ring groove 35 to the second air passage 25 of the tool head 20, no matter where the tool head 20 is swung to any Angle, air can be smoothly supplied from the handle 10 to the air motor 40 of the tool head 20. Therefore, the pneumatic wrench 1 can flexibly adjust the angle of the tool head 20 according to the user's needs or the conditions of the construction site, which not only improves the smoothness of use, but also adapts to various environments, especially small spaces, and greatly increases the tolerance of application occasions.

基於本發明之設計精神，該氣動扳手1之結構可有其他變化，例如：該第一氣道16之結構可有其他變化；或者該工具頭20能相對該握把10旋擺角度可達-90∘~90∘；或者該第三環槽37可省略不設，該等氣密環38之數量可有所變化；又或者該等氣密環38亦可省略不設。舉凡此等可輕易思及的結構變化，均應為本發明申請專利範圍所涵蓋。Based on the design spirit of the present invention, the structure of the pneumatic wrench 1 can have other changes, for example: the structure of the first air passage 16 can have other changes; or the tool head 20 can swing at an angle of -90 relative to the grip 10 ∘~90∘; or the third ring groove 37 can be omitted, and the number of the airtight rings 38 can be changed; or the airtight rings 38 can also be omitted. All of these structural changes that can be easily thought of should be covered by the scope of the patent application for the invention.

1:氣動扳手 10:握把 11:主體 13:延伸壁 15:卡接槽 16:第一氣道 17:主流道 18:支流道 19:第一樞孔 L:軸線 20:工具頭 21:頭部 23:頸部 25:第二氣道 27:第二樞孔 29:輸出軸 291:軸心 30:轉軸 31:桿體 32:軸孔 321:開放端 322:封閉端 33:第一環槽 34:第一通孔 35:第二環槽 36:第二通孔 37:第三環槽 38:氣密環 39:塞件 40:氣動馬達 42:轉子1: pneumatic wrench 10: Grip 11: main body 13: Extension wall 15: card slot 16: first airway 17: Mainstream 18: Tributary 19: The first pivot hole L: axis 20: Tool head 21: head 23: neck 25: second airway 27: second pivot hole 29: output shaft 291: Axis 30: shaft 31: Rod body 32: Shaft hole 321: open end 322: closed end 33: The first ring groove 34: The first through hole 35: second ring groove 36: second through hole 37: Third ring groove 38: airtight ring 39: plug 40: Air motor 42: Rotor

第1圖為本發明一較佳實施例之氣動扳手之立體圖；第2圖為本發明一較佳實施例之氣動扳手的分解圖；第3圖為本發明一較佳實施例之氣動扳手之握把的剖面圖；第4圖為本發明一較佳實施例之氣動扳手之工具頭的剖面圖；第5圖為本發明一較佳實施例之氣動扳手之轉軸的立體圖；第6圖為本發明一較佳實施例之氣動扳手之轉軸的剖面圖；第7圖為本發明一較佳實施例之氣動扳手之工具頭於不同角度之立體圖。Figure 1 is a perspective view of a pneumatic wrench according to a preferred embodiment of the present invention; Figure 2 is an exploded view of a pneumatic wrench according to a preferred embodiment of the present invention; Figure 3 is a cross-sectional view of the grip of a pneumatic wrench according to a preferred embodiment of the present invention; Figure 4 is a cross-sectional view of a tool head of a pneumatic wrench according to a preferred embodiment of the present invention; Figure 5 is a perspective view of the rotating shaft of a pneumatic wrench according to a preferred embodiment of the present invention; Figure 6 is a cross-sectional view of the rotating shaft of a pneumatic wrench according to a preferred embodiment of the present invention; Figure 7 is a perspective view of the tool head of a pneumatic wrench in different angles according to a preferred embodiment of the present invention.

1:氣動扳手1: pneumatic wrench

10:握把10: Grip

20:工具頭20: Tool head

29:輸出軸29: output shaft

30:轉軸30: shaft

Claims

一種氣動扳手，包含有：一握把，具有一主體、二延伸壁互相間隔地由該主體一端延伸而出、一卡接槽形成於該二延伸壁之間、一第一氣道設於該主體與該二延伸壁內部、以及二第一樞孔穿設於該二延伸壁且與該第一氣道連通；一工具頭，包含有一頭部、一頸部由該頭部延伸而出且伸入該卡接槽中、一第二氣道設於該頭部與該頸部內部、以及一第二樞孔穿設於該頸部且與該第二氣道連通；以及一轉軸，穿設於該握把之第一樞孔及該工具頭之第二樞孔，令該工具頭能相對該握把旋擺，該轉軸具有一桿體、一軸孔設於該桿體內部、二第一環槽設於該桿體外周緣且位置對應於該二延伸壁、一第二環槽設於該桿體外周緣且位置對應於該頸部、二第一通孔設於該桿體且位於該第一環槽、以及一第二通孔設於該桿體且位於該第二環槽，該等第一通孔與該第二通孔皆與該軸孔連通，藉此，該握把之第一氣道經由該等第一環槽、該等第一通孔、該軸孔以及該第二通孔連通該工具頭之第二氣道。A pneumatic wrench, including: A grip having a main body, two extension walls extending from one end of the main body at intervals, a clamping groove is formed between the two extension walls, a first air passage is provided inside the main body and the two extension walls, And two first pivot holes pass through the two extension walls and communicate with the first airway; A tool head includes a head, a neck extending from the head and extending into the clamping groove, a second airway provided inside the head and the neck, and a second pivot hole through Is located at the neck and communicates with the second airway; and A rotating shaft penetrates the first pivot hole of the handle and the second pivot hole of the tool head, so that the tool head can swing relative to the handle, the rotating shaft has a rod body, and a shaft hole is arranged in the rod body Part, two first ring grooves are provided on the outer periphery of the rod body and the position is corresponding to the two extension walls, a second ring groove is provided on the outer periphery of the rod body and the position is corresponding to the neck, and two first through holes are provided on the rod The body is located in the first ring groove, and a second through hole is provided in the rod body and is located in the second ring groove, the first through holes and the second through holes are both connected to the shaft hole, thereby, The first air passage of the handle communicates with the second air passage of the tool head through the first ring grooves, the first through holes, the shaft hole and the second through hole.

如請求項1所述的氣動扳手，更包含有多數氣密環套設於該轉軸的桿體且位於該第一環槽之兩側與該第二環槽之兩側。The pneumatic wrench according to claim 1, further comprising a plurality of airtight rings sleeved on the shaft of the rotating shaft and located on both sides of the first ring groove and the second ring groove.

如請求項2所述的氣動扳手，其中該轉軸的桿體設有多數第三環槽，供該等氣密環容設其中。The pneumatic wrench according to claim 2, wherein the rod body of the rotating shaft is provided with a plurality of third ring grooves for the airtight rings to be accommodated therein.

如請求項1所述的氣動扳手，其中該軸孔係由該桿體之一端凹入，該軸孔之一端為開放端，該軸孔之另一端為封閉端，該開放端設有一塞件，藉以使該軸孔之兩端封閉。The pneumatic wrench according to claim 1, wherein the shaft hole is recessed by one end of the rod body, one end of the shaft hole is an open end, the other end of the shaft hole is a closed end, and the open end is provided with a plug , In order to make the two ends of the shaft hole closed.

如請求項1所述的氣動扳手，其中該轉軸之桿體的延長方向係垂直該握把之主體的延長方向。The pneumatic wrench according to claim 1, wherein the extension direction of the shaft of the shaft is perpendicular to the extension direction of the main body of the grip.

如請求項1所述的氣動扳手，其中該第一氣道包含有一主流道以及二支流道，該主流道由該主體的一端伸入，該二支流道與該主流道連通且由該主體延伸至該二延伸壁。The pneumatic wrench according to claim 1, wherein the first air passage includes a main flow passage and two branch flow passages, the main flow passage extends in from one end of the main body, and the two branch flow passages communicate with the main flow passage and extend from the main body to The two extended walls.

如請求項1所述的氣動扳手，其中該工具頭包含有一輸出軸由該頭部延伸而出，在該工具頭相對該握把旋擺的過程中，該輸出軸之軸心保持垂直於該轉軸。The pneumatic wrench according to claim 1, wherein the tool head includes an output shaft extending from the head, and when the tool head is rotated relative to the handle, the axis of the output shaft remains perpendicular to the Shaft.

如請求項1所述的氣動扳手，其中該工具頭能相對該握把旋擺角度為-90∘~90∘。The pneumatic wrench according to claim 1, wherein the angle of the tool head relative to the handle is -90∘~90∘.

如請求項8所述的氣動扳手，其中該工具頭能相對該握把旋擺角度為-60∘~60∘。The pneumatic wrench according to claim 8, wherein the angle of the tool head relative to the grip is -60∘~60∘.