TWI625205B - Large speed ratio pneumatic tool - Google Patents
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- TWI625205B TWI625205B TW106126909A TW106126909A TWI625205B TW I625205 B TWI625205 B TW I625205B TW 106126909 A TW106126909 A TW 106126909A TW 106126909 A TW106126909 A TW 106126909A TW I625205 B TWI625205 B TW I625205B
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Abstract
一種大速比氣動工具，包括風驅機構及油壓脈衝產生器，該風驅機構與該油壓脈衝產生器同軸配置，該油壓脈衝產生器通過一脈衝輸出軸連接一行星輪減速機構，該行星輪減速機構可通過由第一行星輪組所構成的一級減速系統獲得所想要的減速比輸出速度；亦可再通過第二行星輪組所構成的二級減速系統獲得更大的減速比輸出速度。可按照所需要的輸出轉速，該行星輪減速機構可包括更多級的減速系統。 The utility model relates to a large speed ratio pneumatic tool, comprising a wind drive mechanism and an oil pressure pulse generator, wherein the wind drive mechanism is coaxially arranged with the oil pressure pulse generator, and the oil pressure pulse generator is connected to a planetary wheel speed reduction mechanism through a pulse output shaft. The planetary gear reduction mechanism can obtain the desired reduction ratio output speed through the first-stage reduction system composed of the first planetary gear set; and can obtain greater deceleration through the secondary reduction system formed by the second planetary gear set. Than output speed. The planetary reduction mechanism can include more stages of deceleration systems depending on the desired output speed.
Description
本發明涉及氣動工具的技術領域，更詳而言之，是一種大速比及氣動工具。 The invention relates to the technical field of pneumatic tools, and more particularly to a large speed ratio and pneumatic tool.
氣動工具主要利用高壓空氣於進氣與出氣間所產之循環作用，帶動氣動馬達旋轉並以動力軸輸出扭矩，配合與動力軸連接的工具頭，執行擰緊、旋鬆螺栓、螺帽等作業。離合器被應用於傳統氣動工具，當氣動工具工作端的反作用力大於離合器預設值時，離合器即受控促動，令工作端與氣動馬達瞬間脫扣。然而在脫扣瞬間，機械運轉的慣性作用導致整個氣動工具發生震動或晃動，對於長時間使用氣動工具的操作者的手部而言，是一項很大的負擔，容易造成手部疲勞，影響工作效率和精準程度。 Pneumatic tools mainly use high-pressure air to generate circulation between intake and exhaust, drive the air motor to rotate and output torque with the power shaft, and cooperate with the tool head connected with the power shaft to perform tightening, loosening bolts and nuts. The clutch is applied to a conventional pneumatic tool. When the reaction force of the working end of the pneumatic tool is greater than the preset value of the clutch, the clutch is controlled to be actuated, so that the working end and the air motor are instantaneously tripped. However, at the moment of tripping, the inertia of the mechanical operation causes the entire pneumatic tool to vibrate or shake, which is a great burden for the operator's hand using the pneumatic tool for a long time, which easily causes hand fatigue and affects. Work efficiency and accuracy.
為解決上述問題，油壓脈衝機構被應用至氣動工具。此技術方案揭露於中華民國新型專利M448355，其係在氣動工具的氣動馬達前端同軸連接一油壓脈衝產生器，該油壓脈衝產生器的前端通過一減速機構連設一扭力輸出裝置，該扭力輸出裝置連接一開口齒輪扳手。所述的減速機構是一行星齒輪組，所述的扭力輸出裝置是傘齒輪組，所述開口齒輪扳手是通過數個齒輪依序傳遞該傘齒輪組的旋轉動力，最終以齒輪套筒將扭矩輸出至工件。 To solve the above problem, the oil pulse mechanism is applied to a pneumatic tool. The technical solution is disclosed in the Republic of China new patent M448355, which is connected coaxially with a hydraulic pulse generator at the front end of the pneumatic motor of the pneumatic tool, and the front end of the hydraulic pulse generator is connected with a torque output device through a speed reduction mechanism, the torque The output device is connected to an open gear wrench. The speed reduction mechanism is a planetary gear set, and the torque output device is a bevel gear set. The open gear wrench sequentially transmits the rotary power of the bevel gear set through a plurality of gears, and finally the torque is driven by the gear sleeve. Output to the workpiece.
先前技術方案可以改進的問題點是，減速機構以一行星齒輪組實現，可達到的減速比有限；此外，輸出扭矩通過傘齒輪組而轉向，使減速後的輸出轉速無法被確保。 A problem that can be improved by the prior art is that the speed reduction mechanism is realized by a planetary gear set, and the achievable reduction ratio is limited; in addition, the output torque is steered through the bevel gear set, so that the output speed after deceleration cannot be ensured.
本發明一種大速比氣動工具，包括一機殼；一風驅機構，設置於該機殼中，該風驅機構的動力是高壓空氣；一油壓脈衝產生器，設置於該機殼中，位於該風驅機構的前方並與該風驅機構同軸配置，該油壓脈衝產生器具有朝向該機殼前方的一脈衝輸出軸；其特徵在於：一行星輪減速機構，至少包含第一行星輪組，該第一行星輪組包括一第一太陽輪軸、一第一行星臂架、一第一行星輪系、一第一輸出軸以及一第一內齒輪環；所述第一太陽輪軸與該脈衝輸出軸同軸連接，並穿樞於該第一行星臂架的軸心；所述第一行星輪系包含可自由轉動的分配於該第一行星臂架上的數個第一行星齒輪，該數個第一行星齒輪並同時嚙合該第一內齒輪環及該第一太陽輪軸的齒輪部；所述第一輸出軸是與該第一太陽輪軸同軸的方式凸出於該第一行星臂架的前端，該第一輸出軸的前端為一連接部；所述第一內齒輪環是設置於一前殼蓋中，該前殼蓋組合於該機殼的前端，並且覆罩該行星輪減速機構。 The utility model relates to a large speed ratio pneumatic tool, which comprises a casing; a wind drive mechanism is arranged in the casing, the power of the wind drive mechanism is high pressure air; and an oil pressure pulse generator is arranged in the casing, Located in front of the wind drive mechanism and coaxially disposed with the wind drive mechanism, the oil pressure pulse generator has a pulse output shaft facing the front of the casing; wherein: a planetary gear reduction mechanism includes at least a first planetary gear The first planetary gear set includes a first sun gear shaft, a first planetary boom, a first planetary gear train, a first output shaft, and a first inner gear ring; the first sun gear shaft and the The pulse output shaft is coaxially connected and pivoted to the axis of the first planet boom; the first planetary gear train includes a plurality of first planetary gears that are freely rotatable and distributed on the first planet boom. a plurality of first planetary gears simultaneously meshing the first inner gear ring and a gear portion of the first sun gear shaft; the first output shaft is coaxial with the first sun gear shaft and protrudes from the first planetary boom Front end, the first output shaft Is connected to a distal end portion; the first inner gear ring is arranged in a front housing cover, the housing cover combined in front of the front end of the housing, and the cover covering the planetary gear reduction mechanism.
在本發明實施例中，該行星輪減速機構更包含第二行星輪組，該第二行星輪組包括一第二太陽輪軸、一第二行星臂架、一第二行星輪系、一第二輸出軸以及一第二內齒輪環；所述第二太陽輪軸為該第一輸出軸，且該第一輸出軸的該連接部為齒輪部，該第二太陽輪軸並穿樞於該第二行星臂架的軸心；所述第二行星輪系包含可自由轉動的分配於該第二行星臂架上的數個第二行星齒輪，該數個第二行星齒輪並同時嚙合該第二內齒輪 環及該第二太陽輪軸的齒輪部；所述第二輸出軸是與該第二太陽輪軸同軸的方式凸出於該第二行星臂架的前端，該第二輸出軸的前端為一工具套接部，該工具套接部穿伸出該前殼蓋；所述第二內齒輪環是設置於該前殼蓋中。 In the embodiment of the present invention, the planetary gear reduction mechanism further includes a second planetary gear set, the second planetary gear set includes a second sun gear axle, a second planetary boom, a second planetary gear train, and a second An output shaft and a second inner gear ring; the second sun gear shaft is the first output shaft, and the connecting portion of the first output shaft is a gear portion, and the second sun gear shaft is pivoted to the second planet An axis of the boom; the second planetary gear train includes a plurality of second planetary gears rotatably distributed on the second planetary boom, and the plurality of second planetary gears simultaneously mesh the second internal gear a ring portion and a gear portion of the second sun gear shaft; the second output shaft is coaxial with the second sun gear shaft and protrudes from a front end of the second planet boom, and the front end of the second output shaft is a tool sleeve a joint portion extending through the front cover; the second internal gear ring is disposed in the front cover.
在本發明實施例中，所述第一行星臂架更包含一第一軸承支撐部，是與該第一輸出軸同軸的方式凸出於該第一行星臂架的後端；該第一軸承支撐部支撐一第一軸承組，該第一軸承組被定位於該機殼中。 In the embodiment of the present invention, the first planetary boom further includes a first bearing support portion protruding from the rear end of the first planetary boom in a manner coaxial with the first output shaft; the first bearing The support portion supports a first bearing set that is positioned in the housing.
在本發明實施例中，所述第二行星臂架更包含一第二軸承支撐部，位於該第二輸出軸的後端；該第二軸承支撐部支撐一第二軸承組，該第二軸承組被定位於該前殼蓋中。 In the embodiment of the present invention, the second planetary boom further includes a second bearing support portion at a rear end of the second output shaft; the second bearing support portion supports a second bearing set, the second bearing The set is positioned in the front cover.
在本發明實施例中，其更包含一抗扭轉件，該抗扭轉件包含一契合部以及一體連接於該契合部底端的一抵抗部，該契合部與該前殼蓋通過一契合結構連接。 In an embodiment of the invention, the anti-torsion member further includes a resisting portion and a resisting portion integrally connected to the bottom end of the engaging portion, the engaging portion being connected to the front cover by a fitting structure.
在本發明實施例中，該契合結構為花鍵結構，包括設於該前殼蓋的外花鍵以及設於該契合部的內花鍵。 In the embodiment of the present invention, the engaging structure is a spline structure, and includes an external spline provided on the front cover and an internal spline provided on the engaging portion.
在本發明實施例中，本發明之功效：該行星輪減速機構可通過由第一行星輪組所構成的一級減速系統獲得所想要的減速比輸出速度；亦可再通過第二行星輪組所構成的二級減速系統獲得更大的減速比輸出速度。可按照所需要的輸出轉速，該行星輪減速機構可包括更多級的減速系統。 In the embodiment of the present invention, the effect of the present invention: the planetary gear reduction mechanism can obtain the desired reduction ratio output speed through the first-stage deceleration system composed of the first planetary gear set; and can also pass the second planetary gear set The resulting secondary reduction system achieves a greater reduction ratio output speed. The planetary reduction mechanism can include more stages of deceleration systems depending on the desired output speed.
本發明該工具套接部是第二行星臂架軸心的凸伸，因此行星輪減 速機構的大減速比輸出速度是直接傳遞至套接於該工具套接部的工具頭，該工具頭可直接表現大減速比輸出速度，減速後的輸出轉速被完全確保。 The tool socket portion of the invention is a protrusion of the axis of the second planet arm frame, so the planetary wheel is reduced The large reduction ratio of the speed mechanism is directly transmitted to the tool head that is sleeved on the tool socket. The tool head can directly express the large reduction ratio output speed, and the output speed after deceleration is completely ensured.
大減速比輸出速度使工具頭的具有增高的扭力，***作的工件(如螺栓、螺帽)得以較緩速的被擰緊，並且在擰緊的瞬間，減少滑牙機率，而被擰緊的工件可達到規定的拉力，但不會被拉裂。 The large reduction ratio output speed enables the tool head to have increased torque, and the operated workpiece (such as bolts and nuts) can be tightened more slowly, and at the moment of tightening, the sliding probability is reduced, and the workpiece being tightened can be The specified pull is achieved, but will not be pulled apart.
所述第一行星臂架及第二行星臂架分別以第一軸承支撐部和第二軸承支撐部分別支撐一第一軸承組和一第二軸承組，使該行星輪減速機構的運轉獲得支撐而得以穩定。 The first planetary boom and the second planetary boom respectively support a first bearing set and a second bearing set by the first bearing support portion and the second bearing support portion, respectively, so that the operation of the planetary gear reduction mechanism is supported And it is stable.
所述之抗扭轉件以抵抗部的側面承靠一固定物而發揮抗扭轉的作用，在諸如汽車輪圈組裝的場合，該抵抗部的側面可以承靠在輪圈與工件鄰近的側壁。在工件被擰緊時，該抗扭轉件起了防止氣動工具本身因大扭力而扭轉的作用。 The anti-rotation member exerts a torsional resistance against the side of the resisting portion against a fixture. In the case of assembly such as an automobile rim, the side of the resisting portion can bear against a side wall of the rim adjacent to the workpiece. When the workpiece is tightened, the anti-rotation member acts to prevent the pneumatic tool itself from twisting due to large torque.
10‧‧‧機殼 10‧‧‧Chassis
11‧‧‧風驅機構 11‧‧‧Wind drive agency
12‧‧‧油壓脈衝產生器 12‧‧‧Hydraulic pulse generator
121‧‧‧脈衝輸出軸 121‧‧‧pulse output shaft
13‧‧‧行星輪減速機構 13‧‧‧ planetary gear reduction mechanism
20‧‧‧第一行星輪組 20‧‧‧First planetary gear set
21‧‧‧第一太陽輪軸 21‧‧‧First sun shaft
211‧‧‧齒輪部 211‧‧‧ Gear Department
24‧‧‧第一輸出軸 24‧‧‧First output shaft
241‧‧‧連接部 241‧‧‧Connecting Department
25‧‧‧第一內齒輪環 25‧‧‧First internal gear ring
26‧‧‧前殼蓋 26‧‧‧Front cover
27‧‧‧第一軸承組 27‧‧‧First bearing set
30‧‧‧第二行星輪組 30‧‧‧Second planetary gear set
31‧‧‧第二太陽輪軸 31‧‧‧Second solar axle
311‧‧‧齒輪部 311‧‧‧ Gear Department
341‧‧‧工具套接部 341‧‧‧Tools Sockets
35‧‧‧第二內齒輪環 35‧‧‧Second internal gear ring
36‧‧‧第二軸承組 36‧‧‧Second bearing set
40‧‧‧契合結構 40‧‧‧fit structure
401‧‧‧外花鍵 401‧‧‧ external splines
402‧‧‧內花鍵 402‧‧‧ internal spline
42‧‧‧抗扭轉件 42‧‧‧Anti-torque parts
421‧‧‧契合部 421‧‧‧With the Ministry
22‧‧‧第一行星臂架 22‧‧‧First Planetary Boom
221‧‧‧第一軸承支撐部 221‧‧‧First bearing support
23‧‧‧第一行星輪系 23‧‧‧First planetary gear train
231‧‧‧第一行星齒輪 231‧‧‧First planetary gear
32‧‧‧第二行星臂架 32‧‧‧second planetary boom
321‧‧‧第二軸承支撐部 321‧‧‧Second bearing support
33‧‧‧第二行星輪系 33‧‧‧Second planetary gear train
331‧‧‧第二行星齒輪 331‧‧‧Second planetary gear
34‧‧‧第二輸出軸 34‧‧‧second output shaft
422‧‧‧抵抗部 422‧‧‧Resistance Department
43‧‧‧限位環 43‧‧‧ Limit ring
第1圖為本發明氣動工具之立體外觀圖。 Figure 1 is a perspective view of the pneumatic tool of the present invention.
第2圖為本發明氣動工具之行星輪減速機構及抗扭轉件的立體分解圖。 2 is an exploded perspective view of the planetary gear reduction mechanism and the anti-rotation member of the pneumatic tool of the present invention.
第3圖為本發明氣動工具之行星輪減速機構及抗扭轉件的側視圖。 Figure 3 is a side view of the planetary gear reduction mechanism and the anti-rotation member of the pneumatic tool of the present invention.
第4圖為本發明氣動工具之行星輪減速機構及抗扭轉件的剖面圖。 Fig. 4 is a cross-sectional view showing the planetary gear reduction mechanism and the anti-rotation member of the pneumatic tool of the present invention.
為便於說明上述發明內容一欄中所表示的中心思想，茲以具體實施例表達。實施例中各種不同物件係按適於說明之比例、尺寸、變形量或位移量而描繪，而非按實際元件的比例予以繪製，合先敘明。 The central idea expressed in the column of the above summary of the invention is expressed by way of specific examples. Various items in the embodiments are depicted in terms of ratios, dimensions, amounts of deformation, or displacements that are suitable for illustration, and are not drawn to the proportions of actual elements, as set forth above.
如第1至4圖，本發明大速比氣動工具，包括一機殼10；一風驅機構11，設置於該機殼10中，該風驅機構11的動力是高壓空氣；一油壓脈衝產生器12，設置於該機殼10中，位於該風驅機構11的前方並與該風驅機構11同軸連接，該油壓脈衝產生器12具有朝向該機殼10前方的一脈衝輸出軸121。 As shown in Figures 1 to 4, the high speed ratio pneumatic tool of the present invention comprises a casing 10; a wind drive mechanism 11 is disposed in the casing 10, the power of the wind drive mechanism 11 is high pressure air; The generator 12 is disposed in the casing 10 and is located in front of the wind drive mechanism 11 and coaxially connected to the wind drive mechanism 11 . The oil pulse generator 12 has a pulse output shaft 121 facing the front of the casing 10 . .
該氣動工具更包含一行星輪減速機構13，其包含第一行星輪組20和第二行星輪組30。該第一行星輪組20包括一第一太陽輪軸21、一第一行星臂架22、一第一行星輪系23、一第一輸出軸24以及一第一內齒輪環25。該第二行星輪組30包括一第二太陽輪軸31、一第二行星臂架32、一第二行星輪系33、一第二輸出軸34以及一第二內齒輪環35。 The pneumatic tool further includes a planetary gear reduction mechanism 13 that includes a first planetary gear set 20 and a second planetary gear set 30. The first planetary gear set 20 includes a first sun gear shaft 21, a first planetary boom 22, a first planetary gear train 23, a first output shaft 24, and a first internal gear ring 25. The second planetary gear set 30 includes a second sun gear shaft 31, a second planetary boom 32, a second planetary gear train 33, a second output shaft 34, and a second internal gear ring 35.
所述第一太陽輪軸21連接於該脈衝輸出軸121，並穿樞於該第一行星臂架22的軸心；所述第一行星輪系23包含可自由轉動的分配於該第一行星臂架22上的數個第一行星齒輪231，該數個第一行星齒輪231並同時嚙合該第一內齒輪環25及該第一太陽輪軸21的齒輪部211；所述第一輸出軸24是與該第一太陽輪軸21同軸的方式凸出於該第一行星臂架22的前端，該第一輸出軸24的前端為一連接部241；該連接部241可為供工具套接的結構，或者是做為該第二太陽輪軸31的齒輪型式；所述第一內齒輪環25是設置於一前殼蓋26中，該前殼蓋26組合於該機殼10的前端，並且罩住該行星輪減速機構13。 The first sun gear shaft 21 is coupled to the pulse output shaft 121 and pivoted to the axis of the first planet boom 22; the first planetary gear train 23 includes a freely rotatable distribution to the first planet arm a plurality of first planetary gears 231 on the frame 22, the plurality of first planetary gears 231 simultaneously meshing with the first internal gear ring 25 and the gear portion 211 of the first sun gear shaft 21; the first output shaft 24 is A front end of the first planetary boom 22 is protruded from the first sun gear shaft 21, and a front end of the first output shaft 24 is a connecting portion 241. The connecting portion 241 can be a tool sleeve. Or a gear type as the second sun gear shaft 31; the first inner gear ring 25 is disposed in a front cover 26 that is combined with the front end of the casing 10 and covers the front cover Planetary gear reduction mechanism 13.
所述第二太陽輪軸31為前述第一輸出軸24，因此該第一輸出軸24的該連接部241為第二太陽輪軸31的齒輪部311，該第二太陽輪軸31並穿樞於該第二行星臂架32的軸心；所述第二行星輪系33包含可自由轉動的分配 於該第二行星臂架32上的數個第二行星齒輪331，該數個第二行星齒輪331並同時嚙合該第二內齒輪環35及該第二太陽輪軸31的齒輪部311；所述第二輸出軸34是與該第二太陽輪軸31同軸的方式凸出於該第二行星臂架32的前端，該第二輸出軸34的前端為一工具套接部341，該工具套接部341穿伸出該前殼蓋26；所述第二內齒輪環35是設置於該前殼蓋26中。 The second sun gear shaft 31 is the first output shaft 24, so the connecting portion 241 of the first output shaft 24 is the gear portion 311 of the second sun gear shaft 31, and the second sun gear shaft 31 is pivoted to the first The axis of the two planetary booms 32; the second planetary gear train 33 includes a freely rotatable distribution a plurality of second planetary gears 331 on the second planetary boom 32, the plurality of second planetary gears 331 simultaneously meshing with the second internal gear ring 35 and the gear portion 311 of the second sun gear shaft 31; The second output shaft 34 is coaxial with the second sun gear shaft 31 and protrudes from the front end of the second planetary boom 32. The front end of the second output shaft 34 is a tool sleeve portion 341. The front housing cover 26 is extended by the 341; the second internal gear ring 35 is disposed in the front housing cover 26.
在本發明實施例中，該行星輪減速機構13具有兩級減速系統，第一級減速系統是第一行星輪組20，第二級減速系統是第二行星輪組30。通過兩級減速系統獲得所需要的大減速比輸出速度。在其他實施方式中，按照所需要的輸出轉速，該行星輪減速機構13可以只包括一級減速系統，或更多級的減速系統。 In the embodiment of the present invention, the planetary gear reduction mechanism 13 has a two-stage reduction system, the first stage reduction system is the first planetary gear set 20, and the second stage reduction system is the second planetary gear set 30. The required large reduction ratio output speed is obtained by a two-stage reduction system. In other embodiments, the planetary reduction mechanism 13 may include only one stage of the reduction system, or more stages of the reduction system, depending on the desired output speed.
前述的工具套接部341可直接套接任何已知以旋轉操作的工具頭使用，基於該工具套接部341是第二行星臂架32軸心的凸伸，因此行星輪減速機構13的大減速比輸出速度將直接傳遞至該工具頭，該工具頭可直接表現大減速比輸出速度，因此減速後的輸出轉速被完全確保。大減速比輸出速度使工具頭具有增高的扭力，使***作的工件(如螺栓、螺帽)得以較緩速的被擰緊，並且在擰緊的瞬間，不致發生滑牙，而被擰緊的工件可達到規定的拉力，但不會被拉裂。 The aforementioned tool socket 341 can be directly socketed to any tool head known to be rotated, based on the tool socket 341 being the protrusion of the axis of the second planet carrier 32, and thus the planetary gear reduction mechanism 13 is large. The reduction ratio output speed is directly transmitted to the tool head, and the tool head can directly express the large reduction ratio output speed, so the output speed after deceleration is completely ensured. The large reduction ratio output speed makes the tool head have increased torque, so that the workpieces to be operated (such as bolts and nuts) can be tightened more slowly, and at the moment of tightening, the sliding teeth will not occur, and the workpiece to be tightened can be The specified pull is achieved, but will not be pulled apart.
為使該行星輪減速機構13的運轉獲得支撐而得以穩定，所述第一行星臂架22更包含一第一軸承支撐部221，該第一軸承支撐部221是與該第一輸出軸24同軸的方式凸出於該第一行星臂架22的後端；該第一軸承支撐部221支撐一第一軸承組27，該第一軸承組27被定位於該機殼10中；所述第二行星臂架32更包含一第二軸承支撐部321，位於該第二輸出軸34的後端； 該第二軸承支撐部321支撐一第二軸承組36，該第二軸承組36被定位於該前殼蓋26中。 In order to stabilize the operation of the planetary gear reduction mechanism 13, the first planetary boom 22 further includes a first bearing support portion 221, which is coaxial with the first output shaft 24. Protruding the rear end of the first planetary boom 22; the first bearing support portion 221 supports a first bearing set 27, the first bearing set 27 is positioned in the casing 10; The planetary boom 32 further includes a second bearing support portion 321 located at a rear end of the second output shaft 34; The second bearing support portion 321 supports a second bearing set 36 that is positioned in the front housing cover 26.
如第1至4圖，該前殼蓋26的前端通過一契合結構40與一抗扭轉件連接42。所述之抗扭轉件42包含一契合部421以及一體連接於該契合部421底端並向前延伸的抵抗部422。所述的契合結構40包含但不限於花鍵結構；在實施例中，該花鍵連接包含設於該前殼蓋26的外花鍵401以及設於該契合部421的內花鍵402，該外花鍵401和該內花鍵402契合連接。該抗扭轉件42的抵抗部422以側面承靠一固定物而發揮抗扭轉的作用，在諸如汽車輪圈組裝的場合，該抵抗部422的側面可以承靠在輪圈與工件鄰近的側壁。該抗扭轉件42的目是為了避免工件(如螺栓、螺帽)被擰緊時，氣動工具本身因大扭力而發生扭轉的情形。一限件環43被鎖固於該該前殼蓋26的端面，用以擋止該抗扭轉件42避免其發生軸向脫離。 As shown in Figures 1 through 4, the front end of the front cover 26 is coupled 42 to an anti-twist member by a conforming structure 40. The anti-rotation member 42 includes a matching portion 421 and a resisting portion 422 integrally connected to the bottom end of the engaging portion 421 and extending forward. The engaging structure 40 includes, but is not limited to, a spline structure. In the embodiment, the spline connection includes an external spline 401 disposed on the front cover 26 and an internal spline 402 disposed on the engaging portion 421. The outer spline 401 and the inner spline 402 are coupled to each other. The resisting portion 422 of the anti-twist member 42 acts as a torsion-proofing member against a fixture, and the side of the resisting portion 422 can bear against the side wall of the rim adjacent to the workpiece, such as in the assembly of a car rim. The purpose of the anti-rotation member 42 is to prevent the pneumatic tool itself from twisting due to a large torque when the workpiece (such as a bolt or a nut) is tightened. A limit ring 43 is locked to the end surface of the front cover 26 for blocking the anti-rotation member 42 from axial detachment.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| TW106126909A TWI625205B (en) | 2017-08-09 | 2017-08-09 | Large speed ratio pneumatic tool |
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| TW106126909A TWI625205B (en) | 2017-08-09 | 2017-08-09 | Large speed ratio pneumatic tool |
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| TW201910074A TW201910074A (en) | 2019-03-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW417554U (en) * | 2000-04-24 | 2001-01-01 | Jiang Mu Pei | Manual tool without electric power |
| TWM247372U (en) * | 2003-10-28 | 2004-10-21 | Yin King Ind Co Ltd | Gear box for power tool |
| CN201913586U (en) * | 2011-03-01 | 2011-08-03 | 温岭市海利达工具有限公司 | Tire screw detacher |
| TWI346601B (en) * | 2004-09-10 | 2011-08-11 | S P Air Kk | Hand tool with impact drive and speed reducing mechanism |
| TWM448355U (en) * | 2012-10-09 | 2013-03-11 | Chu Dai Ind Co Ltd | Pneumatic tool |
| CN102380837B (en) * | 2010-08-27 | 2014-11-26 | 关弘科技股份有限公司 | Torque multiplier |
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2017
- 2017-08-09 TW TW106126909A patent/TWI625205B/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW417554U (en) * | 2000-04-24 | 2001-01-01 | Jiang Mu Pei | Manual tool without electric power |
| TWM247372U (en) * | 2003-10-28 | 2004-10-21 | Yin King Ind Co Ltd | Gear box for power tool |
| TWI346601B (en) * | 2004-09-10 | 2011-08-11 | S P Air Kk | Hand tool with impact drive and speed reducing mechanism |
| CN102380837B (en) * | 2010-08-27 | 2014-11-26 | 关弘科技股份有限公司 | Torque multiplier |
| CN201913586U (en) * | 2011-03-01 | 2011-08-03 | 温岭市海利达工具有限公司 | Tire screw detacher |
| TWM448355U (en) * | 2012-10-09 | 2013-03-11 | Chu Dai Ind Co Ltd | Pneumatic tool |
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