Pneumatic wrench

Abstract

The application relates to a pneumatic wrench, comprising: a support mechanism comprising a housing, one side of the housing being provided with a grip, the grip being provided with a connector, the housing being internally provided with a first transmission shaft, the first transmission shaft extending to one side of the housing deviating from the grip; the adjusting mechanism is located at the end, away from the grip, of the shell and comprises a first adapter, a first adaptive block and a second adaptive block, the first adapter is fixedly connected with the end, away from the shell, of the first transmission shaft, and the first adaptive block and the second adaptive block are oppositely arranged in the radial direction of the first adapter; the first adaptive block and the second adaptive block can move relative to the first adapter piece in the radial direction of the first adapter piece, and the first adaptive block and the second adaptive block are selectively limited to preset positions of the first adapter piece in the radial direction.

Description

Technical Field

[0001] This application relates to the field of disassembly and assembly tools, and in particular to a pneumatic wrench. Background Technology

[0002] A pneumatic wrench, also known as an air-operated wrench, is a tool that uses compressed air as its power source, primarily used for tightening and loosening bolts or nuts. It has wide applications in automotive repair, machinery maintenance, construction, and manufacturing. Because pneumatic wrenches can provide higher torque than manual wrenches, they are very popular in situations requiring high-intensity, high-efficiency work.

[0003] Existing pneumatic wrenches, which are convenient and quick to install and remove, require the use of different pneumatic wrenches to install and remove nuts of different sizes, resulting in low work efficiency. Utility Model Content

[0004] Based on this, this application provides a pneumatic wrench that can be adapted to nuts of different sizes, improving the versatility of the pneumatic wrench and the efficiency of disassembly and assembly using the pneumatic wrench.

[0005] On one hand, embodiments of this application provide a pneumatic wrench, including:

[0006] The support mechanism includes a housing, a handle is mounted on one side of the housing, the handle is provided with a connector, and a first drive shaft is provided inside the housing, the first drive shaft extending to the side of the housing opposite to the handle.

[0007] An adjustment mechanism is located at the end of the housing away from the handle. The adjustment mechanism includes a first adapter, a first fitting block, and a second fitting block. The first adapter is fixedly connected to the end of the first drive shaft away from the housing. The first fitting block and the second fitting block are arranged opposite each other along the radial direction of the first adapter. Along the radial direction of the first adapter, the first fitting block and the second fitting block can move relative to the first adapter. The first fitting block and the second fitting block can be selectively limited to a preset position along the radial direction of the first adapter.

[0008] In one embodiment, the adjustment mechanism further includes:

[0009] An adjusting limit ring is sleeved on the outer periphery of the first adapter, and the adjusting limit ring is rotatably connected to the first adapter; a sun gear is provided on the inner peripheral wall of the adjusting limit ring, and the sun gear is fixedly connected to the adjusting limit ring;

[0010] An adjusting gear is located on the first adapter and is rotatably connected to the first adapter. The adjusting gear is also connected to the sun gear via a drive. The end face of the adjusting gear is provided with a first arc-shaped groove and a second arc-shaped groove along the radial direction. The first arc-shaped groove and the second arc-shaped groove are arranged opposite to each other along the radial direction of the first adapter, and the arc-shaped bending directions of the first arc-shaped groove and the second arc-shaped groove are opposite.

[0011] A first adjusting rod is inserted into the first arc-shaped slot and is connected to the first adapter block; a second adjusting rod is inserted into the second arc-shaped slot and is connected to the second adapter block.

[0012] In one embodiment, the adjustment mechanism further includes:

[0013] The first connecting rod is connected to the first adapter block;

[0014] The second connecting rod is connected to the second adapter block;

[0015] The first slider is slidably disposed on the first adapter, the first slider is connected to the first connecting rod, and the first adjusting rod is connected to the first slider;

[0016] The second slider is slidably disposed on the first adapter and is arranged opposite to the first slider along the radial direction of the first adapter. The second slider is connected to the second connecting rod, and the second adjusting rod is connected to the second slider.

[0017] In one embodiment, the adjustment mechanism further includes:

[0018] The first transmission gear is connected to the sun gear for transmission;

[0019] The second drive shaft is connected to the first drive gear;

[0020] The second transmission gear is connected to the second transmission shaft and meshes with the adjusting gear; the first transmission gear, the second transmission shaft, and the second transmission gear are eccentrically located on one side of the first transmission shaft.

[0021] In one embodiment, the end face of the adjusting gear is further provided with a third arc-shaped groove along the radial direction; the first arc-shaped groove, the second arc-shaped groove and the third arc-shaped groove are evenly spaced along the circumference of the adjusting gear;

[0022] A third adjusting rod is inserted into the third arc-shaped slot. The third adjusting rod is connected to a third adapter block, which is movably connected to the first adapter block along the radial direction of the first adapter block.

[0023] In one embodiment, the end face of the adjusting gear is provided with a fourth arc-shaped groove in the radial direction, and the first arc-shaped groove, the second arc-shaped groove, the third arc-shaped groove and the fourth arc-shaped groove are evenly spaced along the circumference of the adjusting gear.

[0024] A fourth adjusting rod is inserted into the fourth arc-shaped slot. The fourth adjusting rod is connected to a fourth adapter block. The fourth adapter block is movably connected to the first adapter block along the radial direction of the first adapter block.

[0025] In one embodiment, the support mechanism has a second adapter at the end opposite to the handle, a first drive shaft passes through the second adapter, an adjusting limit ring is sleeved on the second adapter, and the adjusting limit ring is rotatably connected to the second adapter.

[0026] In one embodiment, the pneumatic wrench further includes:

[0027] The insertion mechanism includes a fixing ring, a connecting post, and an auxiliary handle; the fixing ring is sleeved on the outer periphery of the support mechanism, the connecting post is connected to the fixing ring, and the auxiliary handle is detachably connected to the connecting post.

[0028] In one embodiment, the axial direction of the connecting post extends radially along the second adapter, and the auxiliary handle is inserted into the connecting post along the axial direction of the connecting post.

[0029] A fixing pin is provided on one of the connecting column and the auxiliary handle, and the fixing pin passes through the connecting column and the auxiliary handle radially.

[0030] In one embodiment, the fixing ring is further provided with a fixing block, and the connecting post is located on the side of the fixing block facing away from the fixing ring;

[0031] The fixing block is provided with a fixing plate, which is located on one side of the connecting column. The fixing plate is provided with an unlocking component and a resetting component. The unlocking component is rotatably connected to the fixing plate, and one end of the resetting component abuts against the unlocking component, while the other end of the resetting component abuts against the fixing block.

[0032] The retaining pin is connected to the unlocking component.

[0033] In this embodiment, a handle is installed on one side of the support mechanism housing, and a connector is provided on the handle. This allows the pneumatic device to connect to the housing via the connector, thereby driving the first transmission shaft inside the housing to rotate, facilitating the supply of power to the pneumatic wrench. An adjustment mechanism is provided at the end of the housing opposite to the handle. The adjustment mechanism includes a first adapter, a first fitting block, and a second fitting block. The first adapter is fixedly connected to the end of the first transmission shaft opposite to the housing. The first and second fitting blocks are arranged radially opposite to each other along the first adapter, and are movable relative to the first adapter along the radial direction of the first adapter, and can be selectively confined at the first adapter. The component has a preset radial position; thus, when it is necessary to disassemble or install nuts of different sizes, the positions of the first adapter block and the second adapter block can be adjusted radially along the first adapter block, and the first adapter block and the second adapter block can be limited, so that different sizes of nut adapter heads can be clamped between the first adapter block and the second adapter block. This makes it convenient to clamp different sizes of nut adapter heads with a single pneumatic wrench, improving the applicability of the pneumatic wrench. When disassembling or installing nuts of different sizes, only the nut adapter head needs to be replaced, without the need to replace different types of pneumatic wrenches, thus improving the efficiency of disassembling or installing nuts of different sizes. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of a pneumatic wrench provided in some embodiments of this application.

[0035] Figure 2 This is a schematic diagram of the internal structure of the adjusting mechanism in a pneumatic wrench provided in some embodiments of this application.

[0036] Figure 3 This is a schematic diagram of another internal structure of the adjusting mechanism in the pneumatic wrench provided in some embodiments of this application.

[0037] Figure 4 This is a schematic diagram of another internal structure of the adjusting mechanism in the pneumatic wrench provided in some embodiments of this application.

[0038] Figure 5 This is a partial structural diagram of the cooperation between the insertion mechanism and the support mechanism in a pneumatic wrench provided in some embodiments of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10-Support mechanism; 20-Adjustment mechanism; 30-Plug-in mechanism;

[0041] 11-House; 12-Adjustment knob; 13-Handle; 14-First drive shaft; 15-Second adapter; 21-First adapter; 22-First adapter block; 23-Second adapter block; 24-Adjustment limit ring; 25-Adjustment gear; 31-Fixing ring; 32-Connecting post; 33-Auxiliary handle; 34-Fixing block; 35-Fixing plate;

[0042] 241-Sun gear; 251-First arc-shaped groove; 252-Second arc-shaped groove; 253-First adjusting rod; 254-Second adjusting rod; 255-First connecting rod; 256-Second connecting rod; 257-First slider; 258-Second slider; 259-Third arc-shaped groove; 2510-Third adjusting rod; 2511-Fourth arc-shaped groove; 2512-Fourth adjusting rod; 2513-Third adapter block; 2514-Fourth adapter block; 261-First transmission gear; 262-Second transmission shaft; 263-Second transmission gear; 321-Fixing pin; 351-Unlocking component; 352-Reset component. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0049] Figure 1 This is a schematic diagram of the overall structure of a pneumatic wrench provided in some embodiments of this application. Figure 2 This is a schematic diagram of the internal structure of the adjusting mechanism in a pneumatic wrench provided in some embodiments of this application.

[0050] In some examples, refer to Figure 1 and Figure 2 As shown in the embodiment of this application, the pneumatic wrench may include a support mechanism 10. The support mechanism 10 may include a housing 11.

[0051] In some examples, an adjustment knob 12 may be provided on the housing 11. The adjustment knob 12 can control the rotation speed of the pneumatic wrench.

[0052] In some examples, the housing 11 may be the main structure of the pneumatic wrench. The housing 11 may be made of rigid plastic or engineering plastic.

[0053] In some examples, a handle 13 may be provided on one side of the housing 11. The handle 13 may be integral with the housing 11. The handle 13 may be axially located on one side of the housing 11. The handle 13 may be radially located on one side of the housing 11.

[0054] In some examples, the handle 13 may be equipped with a connector. The connector can be used to connect to an external gas source. For example, the connector can be connected to an external high-pressure gas cylinder.

[0055] In some examples, a first drive shaft 14 may be provided inside the housing 11. The first drive shaft 14 may extend to the side of the housing 11 opposite to the handle 13. The first drive shaft 14 may serve as the power output shaft of the pneumatic wrench to output power outward, thereby tightening the nut.

[0056] In some examples, refer to Figure 1 and Figure 2 As shown, the pneumatic wrench may include an adjustment mechanism 20. The adjustment mechanism 20 may be located on the side of the housing 11 opposite to the handle 13.

[0057] In some examples, the adjustment mechanism 20 may include a first adapter 21, a first adapter block 22, and a second adapter block 23. The first adapter 21 is fixedly connected to one end of the first drive shaft 14 away from the housing 11. The first adapter block 22 and the second adapter block 23 are arranged opposite each other along the radial direction of the first adapter 21. Along the radial direction of the first adapter 21, the first adapter block 22 and the second adapter block 23 may move relative to the first adapter 21. The first adapter block 22 and the second adapter block 23 may be selectively confined to a preset position along the radial direction of the first adapter 21.

[0058] In some examples, when using the pneumatic wrench provided in this application embodiment, the first adapter block 22 and the second adapter block 23 can be adjusted to a suitable position radially along the first adapter block. Then, the nut adapter head is inserted between the first adapter block 22 and the second adapter block 23. The first adapter block 22 and the second adapter block 23 clamp the nut adapter head and limit the position of the first adapter block 22 and the second adapter block 23. At this time, the first drive shaft 14 drives the first adapter block 22 and the second adapter block 23 to rotate through the first adapter 21. The first adapter block 22 and the second adapter block 23 drive the nut adapter head to rotate, thereby realizing the tightening of the nut. When it is necessary to tighten nuts of different sizes, the position of the first adapter block 22 and the second adapter block 23 can be adjusted radially along the first adapter 21 so that the first adapter block 22 and the second adapter block 23 can clamp nut adapter heads of different sizes and types, improving the applicability of the pneumatic wrench and improving the efficiency of tightening nuts.

[0059] In this embodiment, a handle 13 is installed on one side of the housing 11 of the support mechanism 10, and a connector is provided on the handle 13. This allows the pneumatic device to connect to the housing 11 via the connector, thereby driving the first drive shaft 14 inside the housing 11 to rotate, facilitating the supply of power to the pneumatic wrench. An adjustment mechanism 20 is provided at the end of the housing 11 opposite to the handle 13. The adjustment mechanism 20 includes a first adapter 21, a first adapter block 22, and a second adapter block 23. The first adapter 21 is fixedly connected to the end of the first drive shaft 14 opposite to the housing 11. The first adapter block 22 and the second adapter block 23 are arranged radially opposite to each other along the first adapter 21, and the first adapter block 22 and the second adapter block 23 are radially equidistant from the first adapter 21. The first adapter 22 and the second adapter 23 can be moved and selectively limited to a preset position in the radial direction of the first adapter 21. Thus, when it is necessary to disassemble or install nuts of different sizes, the positions of the first adapter 22 and the second adapter 23 can be adjusted radially along the first adapter 21, and the first adapter 22 and the second adapter 23 can be limited. This allows different sizes of nut adapter heads to be clamped between the first adapter 22 and the second adapter 23, making it convenient to clamp different sizes of nut adapter heads with a single pneumatic wrench. This improves the applicability of the pneumatic wrench. When disassembling or installing nuts of different sizes, only the nut adapter head needs to be replaced, without the need to replace different types of pneumatic wrenches, thus improving the efficiency of disassembling or installing nuts of different sizes.

[0060] Figure 3 This is another internal structural schematic diagram of the adjusting mechanism 20 in the pneumatic wrench provided in some embodiments of this application. Figure 4 This is another internal structure diagram of the adjusting mechanism 20 in the pneumatic wrench provided in some embodiments of this application.

[0061] In some examples, refer to Figure 2 As shown, the adjustment mechanism 20 may include an adjustment limiting ring 24. The adjustment limiting ring 24 may be sleeved on the outer periphery of the first adapter 21. The adjustment limiting ring 24 may be rotatably connected to the first adapter 21.

[0062] In some examples, the adjusting limit ring 24 can be coaxially set with the first adapter 21.

[0063] In some examples, refer to Figure 2 and Figure 4 As shown, the inner peripheral wall of the adjusting limit ring 24 may be provided with a sun gear 241. The sun gear 241 and the adjusting limit ring 24 may be fixedly connected. The sun gear 241 and the adjusting limit ring 24 may be a single piece. That is, when the adjusting limit ring 24 rotates relative to the first adapter 21, the adjusting limit ring 24 may drive the sun gear 241 to rotate relative to the first adapter 21.

[0064] In some examples, refer to Figures 2-4 As shown, the adjusting mechanism 20 may include an adjusting gear 25. The adjusting gear 25 may be disposed on the first adapter 21. The adjusting gear 25 and the first adapter 21 are rotatably connected. The adjusting gear 25 may be drivenly connected to the sun gear 241.

[0065] In some examples, refer to Figure 4 As shown, the end face of the adjusting gear 25 is provided with a first arc-shaped groove 251 and a second arc-shaped groove 252 in the radial direction. The first arc-shaped groove 251 and the second arc-shaped groove 252 are arranged opposite to each other in the radial direction of the first adapter 21, and the arc-shaped bending directions of the first arc-shaped groove 251 and the second arc-shaped groove 252 are opposite.

[0066] In some examples, the first arc-shaped slot 251 and the second arc-shaped slot 252 can be centrally symmetrical with respect to the central axis of the adjusting gear 25. That is, the first arc-shaped slot 251 can completely coincide with the second arc-shaped slot 252 after rotating 180° around the central axis of the adjusting gear 25.

[0067] In some examples, the first arc-shaped slot 251 and the second arc-shaped slot 252 can be through slots that pass through both end faces of the adjusting gear 25 axially.

[0068] In some examples, a first adjusting rod 253 is inserted into the first arc-shaped slot 251 and is connected to the first adapter block 22; a second adjusting rod 254 is inserted into the second arc-shaped slot 252 and is connected to the second adapter block 23.

[0069] In some examples, when adjusting the positions of the first adapter block 22 and the second adapter block 23, the adjusting limit ring 24 can be rotated. The rotation of the adjusting limit ring 24 drives the sun gear 241 to rotate. The sun gear 241 is connected to the adjusting gear 25, thus driving the adjusting gear 25 to rotate. When the adjusting gear 25 rotates, it drives the first adjusting rod 253 to move along the first arc-shaped slot 251, and the adjusting gear 25 drives the second adjusting rod 254 to move along the second arc-shaped slot 252. Since the first arc-shaped slot 251 and the second arc-shaped slot 252 are arranged radially along the adjusting gear 25, the first adapter block 22 and the second adapter block 23 can move radially along the first adapter member 21. This allows for adjustment of the positions of the first adapter block 22 and the second adapter block 23, facilitating the replacement of different sized nut adapter heads.

[0070] In this embodiment, an adjusting limiting ring 24 is sleeved on the outer periphery of the first adapter 21, and a sun gear 241 is provided on the inner peripheral wall of the adjusting limiting ring 24. Additionally, an adjusting gear 25 is rotatably provided on the first adapter 21. The end face of the adjusting gear 25 is radially provided with a first arc-shaped groove 251 and a second arc-shaped groove 252. A first adjusting rod 253 connected to the first adapter block 22 is inserted into the first arc-shaped groove 251, and a second adjusting rod 254 connected to the second adapter block 23 is inserted into the second arc-shaped groove 252. Thus, by rotating the adjusting limit ring 24, the sun gear 241 is driven to rotate, which in turn drives the adjusting wheel to rotate. This causes the first adjusting rod 253 to move along the first arc-shaped slot 251, which in turn drives the first adapter block 22 to move radially along the first adapter member 21. The second adjusting rod 254 moves along the second arc-shaped slot 252, which in turn drives the second adapter block 23 to move radially along the first adapter member 21. This facilitates the adjustment of the positions of the first adapter block 22 and the second adapter block 23, thereby adapting to different sizes of nut adapter heads. In addition, by adjusting the position of the first adapter block 22 and the second adapter block 23 through the adjusting gear 25, the first adapter block 22 and the second adapter block 23 can move synchronously, improving the adjustment efficiency of the first adapter block 22 and the second adapter block 23.

[0071] In some examples, refer to Figure 3 and Figure 4 As shown, the adjustment mechanism 20 may include a first connecting rod 255. The first connecting rod 255 may be connected to the first adapter block 22.

[0072] In some examples, the first connecting rod 255 may be arranged along the axial direction of the adjusting gear 25. The first connecting rod 255 may be parallel to the axial direction of the adjusting gear 25. The orthogonal projection of the first connecting rod 255 along the axial direction of the adjusting gear 25 is located outside the adjusting gear 25.

[0073] In some examples, refer to Figure 3 and Figure 4 As shown, the adjustment mechanism 20 may include a second connecting rod 256. The second connecting rod 256 may be connected to the second adapter block 23.

[0074] In some examples, the second connecting rod 256 may be arranged along the axial direction of the adjusting gear 25. The second connecting rod 256 may be parallel to the axial direction of the adjusting gear 25. The orthogonal projection of the second connecting rod 256 along the axial direction of the adjusting gear 25 onto the adjusting gear 25 is located outside the adjusting gear 25.

[0075] In some examples, refer to Figure 3 and Figure 4As shown, the adjusting mechanism 20 may include a first slider 257. The first slider 257 is slidably disposed on the first adapter 21. The first slider 257 may be connected to the first connecting rod 255. The first slider 257 may be fixedly connected to the first connecting rod 255. The first adjusting rod 253 may be connected to the first slider 257. The first adjusting rod 253 may be fixedly connected to the first slider 257. That is, when the first adjusting rod 253 moves along the first arc-shaped groove 251, it can drive the first slider 257 to slide relative to the first adapter 21.

[0076] In some examples, refer to Figure 3 and Figure 4 As shown, the end face of the first adapter 21 facing the adjusting gear 25 may be provided with a sliding groove, and the first sliding block may be slidably disposed in the sliding groove. The first sliding block may be a T-shaped sliding block. The first slider 257 may slide within the sliding groove. The sliding groove may be arranged radially along the end face of the first adapter 21.

[0077] In some examples, refer to Figure 4 As shown, the adjusting mechanism 20 may include a second slider 258. The second slider 258 is slidably disposed on the first adapter 21. The second slider 258 is disposed opposite to the first slider 257 along the radial direction of the first adapter 21. The second slider 258 can be connected to the second connecting rod 256.

[0078] It is understood that in the embodiments of this application, the setting method of the second slider 258 may be the same as, similar to or similar to that of the first slider 257. For details, please refer to the detailed description of the first slider 257 in the foregoing embodiments of this application. The embodiments of this application will not repeat the details.

[0079] In this embodiment, by slidably connecting the first slider 257 and the second slider 258 to the first adapter 21, and connecting the first connecting rod 255 to the first slider 257, the first connecting rod 255 is connected to the first adapter block 22, and connecting the second slider 258 to the second connecting rod 256, the second connecting rod 256 is connected to the second adapter block 23. The first slider 257 is connected to the first adjusting rod 253, and the second slider 258 is connected to the second adjusting rod 254. Thus, when adjusting the first adapter block 22 and the second adapter block 23, the first adapter block 22 can move along the sliding direction of the first slider 257, and the second adapter block 23 can move along the sliding direction of the second slider 258, thereby improving the stability of the movement of the first adapter block 22 and the second adapter block 23.

[0080] In some examples, refer to Figure 3 and Figure 4As shown, the adjusting mechanism 20 may include a first transmission gear 261. The first transmission gear 261 may be connected to the sun gear 241. The sun gear 241 may drive the adjusting gear 25 to rotate via the first transmission gear 261.

[0081] In some examples, refer to Figure 4 As shown, the adjusting mechanism 20 may include a second drive shaft 262. The second drive shaft 262 may be connected to the first drive gear 261. The second drive shaft 262 may be fixedly connected to the first drive gear 261. The second drive shaft 262 may be coaxial with the first drive gear 261.

[0082] In some examples, the adjusting mechanism 20 may include a second transmission gear 263. The second transmission gear 263 may be connected to the second transmission shaft 262. The second transmission gear 263 may be fixedly connected to the second transmission shaft 262. The second transmission gear 263 may be coaxial with the second transmission shaft 262.

[0083] In some examples, the second transmission gear 263 can mesh with the adjusting gear 25. The first transmission gear 261, the second transmission shaft 262, and the second transmission gear 263 are eccentrically located on one side of the first transmission shaft 14.

[0084] In some examples, the second drive shaft 262 may pass through the first adapter 21. The first drive gear 261 and the second drive gear 263 may be located on opposite sides of the first adapter 21 along the axial direction. The first drive gear 261 may be located on the side of the first adapter 21 facing the housing 11, and the second drive gear 263 may be located on the side of the first adapter 21 facing away from the housing 11. The adjusting gear 25 may be located on the side of the first adapter facing away from the housing 11.

[0085] In this embodiment, the first transmission gear 261 is connected to the sun gear 241, the second transmission shaft 262 is connected to the first transmission gear 261, the second transmission gear 263 is connected to the second transmission shaft 262, and the second transmission gear 263 meshes with the adjusting gear 25. The first transmission gear 261, the second transmission shaft 262, and the second transmission gear 263 are eccentrically located on one side of the first transmission shaft 14. In this way, the first transmission gear 261, the second transmission shaft 262, and the second transmission gear can be arranged along the axial direction of the first adapter 21, which can make full use of the axial space of the first adapter 21, reduce the radial dimension of the pneumatic wrench, and facilitate the miniaturization of the pneumatic wrench.

[0086] In some examples, refer to Figure 4 As shown, the end face of the adjusting gear 25 may be provided with a third arc-shaped slot along the radial direction. The first arc-shaped slot 251, the second arc-shaped slot 252 and the third arc-shaped slot 259 may be evenly spaced along the circumference of the adjusting dimension.

[0087] In some examples, a third adjusting rod 2510 may be inserted into the third arc-shaped slot 259. The third adjusting rod 2510 is connected to a third adapter block 2513. The third adapter block 2513 is movably connected to the first adapter 21 along the radial direction of the first adapter 21.

[0088] In some examples, the setting method of the third adapter block 2513 may be the same as, similar to or similar to the first adapter block 22 and the second adapter block 23 in the foregoing embodiments of this application. For details, please refer to the detailed description of the first adapter block 22 and the second adapter block 23 in the foregoing embodiments of this application. This application will not repeat the details in this embodiment.

[0089] In this embodiment, a third adapter block 2513 is provided, which is movably connected to the first adapter 21 along the radial direction of the first adapter 21. The first adapter block 22, the second adapter block 23, and the third adapter block 2513 are evenly spaced along the circumference of the first adapter 21. This allows the nut adapter head to be clamped using the first adapter block 22, the second adapter block 23, and the third adapter block 2513, improving the stability of the clamping.

[0090] In some examples, refer to Figure 4 As shown, the end face of the adjusting gear 25 is provided with a fourth arc-shaped slot 2511 in the radial direction. The first arc-shaped slot 251, the second arc-shaped slot 252, the third arc-shaped slot 259 and the fourth arc-shaped slot 2511 are evenly spaced along the circumference of the adjusting gear 25; a fourth adjusting rod 2512 is inserted into the fourth arc-shaped slot 2511, and the fourth adjusting rod 2512 is connected to a fourth adapter block 2514. The fourth adapter block 2514 is movably connected to the first adapter 21 in the radial direction of the first adapter 21.

[0091] It is understood that in this embodiment, the setting method of the fourth adapter block 2514 may be the same as, similar to or similar to the first adapter block 22 and the second adapter block 23 in the previous embodiment of this application. For details, please refer to the detailed description of the first adapter block 22 and the second adapter block 23 in the previous embodiment of this application. This embodiment will not repeat the details.

[0092] In some examples of embodiments of this application, a fourth adapter block 2514 is provided, which is movably connected relative to the first adapter 21 along the radial direction of the first adapter 21. Thus, the nut adapter head can be clamped by the first adapter block 22, the second adapter block 23, the third adapter block 2513, and the fourth adapter block 2514, thereby improving the stability of the nut adapter head clamping.

[0093] In some examples, refer to Figure 2As shown, a second adapter 15 may be provided at the end of the manufacturing mechanism away from the handle 13. The second adapter 15 may be fixedly connected to the housing 11.

[0094] In some examples, the first drive shaft 14 may be inserted through the second adapter 15.

[0095] In some examples, the adjusting limit ring 24 may be fitted onto the second adapter 15. The adjusting limit ring 24 and the second adapter 15 are rotatably connected.

[0096] In some examples of embodiments of this application, a second adapter 15 is provided on the side of the housing 11 opposite to the handle 13, and the adjusting limit ring 24 is rotatably connected to the second adapter 15. This facilitates the support of the adjusting limit ring 24. When it is necessary to adjust the first adapter block 22 and the second adapter block 23, the adjusting limit ring 24 can be rotated. The adjusting limit ring 24 drives the sun gear 241 to rotate, and the sun gear 241 drives the first transmission gear 261 to rotate. The first transmission gear 261 drives the adjusting gear 25 through the second transmission shaft 262 and the second transmission gear 263. The rotation of the adjusting gear 25 drives the first adjusting rod 253 to move through the first arc-shaped slot 251 and drives the second adjusting rod 254 to move through the second arc-shaped slot 252, thereby realizing the adjustment of the first adjusting block and the second adjusting block. When the nut is tightened, the first rotating shaft drives the first adapter 21 to rotate, and the first adapter 21 drives the first connecting rod 255 and the second connecting rod 256 to rotate, thereby driving the first adapter block 22 and the second adapter block 23 to rotate the clamped nut adapter head. Since the second transmission shaft 262 is eccentrically inserted through the first adapter 21 relative to the first transmission shaft 14, the first adapter 21 can drive the second transmission shaft 262 to rotate around the axis of the first rotating shaft, thereby causing the adjusting limit ring 24 to rotate together. That is to say, at this time, the relative positions of the adjusting gear 25, the first gear and the second gear remain unchanged, which can limit the positions of the first adapter block 22 and the second adapter block 23, thereby ensuring the stability of the clamping of the nut adapter head by the first adapter block 22 and the second adapter block 23.

[0097] Figure 5 This is a partial structural diagram of the cooperation between the insertion mechanism 30 and the support mechanism 10 in the pneumatic wrench provided in some embodiments of this application.

[0098] In some examples, refer to Figure 1 and Figure 5 As shown, the pneumatic wrench may include a plug-in mechanism 30. The plug-in mechanism 30 may be detachably connected to the support mechanism 10.

[0099] In some examples, refer to Figure 1 As shown, the insertion mechanism 30 may include a retaining ring 31. The retaining ring 31 may be sleeved on the outer periphery of the support mechanism 10.

[0100] In some examples, the retaining ring 31 may include a clamp.

[0101] In some examples, the insertion mechanism 30 may include a connecting post 32. The connecting post 32 may be connected to the retaining ring 31. The connecting post 32 may be fixedly connected to the retaining ring 31. The connecting post 32 and the retaining ring 31 may be a single piece.

[0102] In some examples, the insertion mechanism 30 may include an auxiliary handle 33. The auxiliary handle 33 may be detachably attached to the connecting post 32.

[0103] In some examples of embodiments of this application, a fixing ring 31 is fitted around the outer periphery of the support mechanism 10, and a connecting post 32 is connected to the fixing ring 31. An auxiliary handle 33 is detachably connected to the connecting post 32. Thus, when tightening nuts requiring less torque, the auxiliary handle 33 can be detached for easier operation of the pneumatic wrench. When tightening nuts requiring greater torque, the auxiliary handle 33 can be mounted on the connecting post 32, allowing the operator to grip and secure the pneumatic wrench from two angles, improving the safety of using the pneumatic wrench.

[0104] In some examples, refer to Figure 1 and Figure 5 As shown, the axial direction of the connecting post 32 can extend radially along the second adapter 15, and the auxiliary handle 33 can be inserted into the connecting post 32 along the axial direction of the connecting post 32.

[0105] In some examples, a retaining pin 321 may be provided on one of the connecting post 32 and the auxiliary handle 33. The retaining pin 321 may be radially inserted into the connecting post 32 and the auxiliary handle 33.

[0106] In some examples of embodiments of this application, a fixing pin 321 is provided on one of the auxiliary handle 33 and the connecting post 32. The fixing pin 321 passes through the connecting post 32 and the auxiliary handle 33 radially. In this way, the connection between the connecting post 32 and the auxiliary handle 33 can be fixed by the fixing pin 321, which improves the stability of the auxiliary handle 33 connection and enhances the safety of using the pneumatic wrench.

[0107] In some examples, refer to Figure 5 As shown, a fixing block 34 may be provided on the fixing ring 31. A connecting post 32 may be provided on the side of the fixing block 34 facing away from the fixing ring 31. The fixing block 34 may be fixedly connected to the fixing ring 31. The connecting post 32 may be fixedly connected to the fixing block 34.

[0108] In some examples, refer to Figure 5As shown, a fixing plate 35 may be provided on the fixing block 34, and the fixing plate 35 may be located on one side of the connecting column 32. The fixing plate 35 may be fixedly connected to the fixing block 34.

[0109] In some examples, refer to Figure 5 Therefore, the fixed plate 35 may be provided with an unlocking button and a reset component 352. The unlocking component 351 is rotatably connected to the fixed plate 35. For example, two opposing support plates may be provided on the fixed plate 35, and the unlocking component 351 may be rotatably provided on the support plates.

[0110] In some examples, a reset member 352 may be provided on the fixed plate 35. One end of the reset member 352 may abut against the unlocking member 351. The other end of the reset member 352 may abut against the fixed block 34.

[0111] In some examples, the reset element 352 may include a compression spring.

[0112] In some examples, the unlocking element 351 can be a Z-shaped plate structure.

[0113] In some examples of embodiments of this application, when it is necessary to connect the auxiliary handle 33 to the connecting post 32, refer to Figure 5 As shown, it can be along Figure 5 Press down the unlocking member 351 in the direction indicated by the middle arrow a, causing the fixing pin 321 to disengage from the connecting post 32. Then, insert and fix the auxiliary handle 33. After releasing the unlocking member 351, the resetting member 352 abuts against the unlocking member 351, causing the fixing pin 321 to insert into the connecting post 32 and the auxiliary handle 33. If it is necessary to disassemble the auxiliary handle 33, follow the... Figure 5 Press down the unlocking piece 351 in the direction indicated by the middle arrow a. The unlocking piece 351 will cause the fixing pin 321 to disengage from the connecting post 32 and the auxiliary handle 33, allowing the auxiliary handle 33 to be pulled out. This facilitates the fixing of the auxiliary handle 33 and the connecting post 32.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pneumatic wrench, characterized in that, include: The support mechanism (10) includes a housing (11), a handle (13) is mounted on one side of the housing (11), the handle (13) is provided with a connector, and a first drive shaft (14) is provided inside the housing (11), the first drive shaft (14) extending to the side of the housing (11) away from the handle (13); An adjustment mechanism (20) is located at one end of the housing (11) away from the handle (13). The adjustment mechanism (20) includes a first adapter (21), a first adapter block (22), and a second adapter block (23). The first adapter (21) is fixedly connected to one end of the first drive shaft (14) away from the housing (11). The first adapter block (22) and the second adapter block (23) are arranged opposite each other along the radial direction of the first adapter (21). Along the radial direction of the first adapter (21), the first adapter block (22) and the second adapter block (23) can move relative to the first adapter (21). The first adapter block (22) and the second adapter block (23) can be selectively limited to a preset position along the radial direction of the first adapter (21).

2. The pneumatic wrench according to claim 1, characterized in that, The adjustment mechanism (20) further includes: An adjusting limit ring (24) is sleeved on the outer periphery of the first adapter (21), and the adjusting limit ring (24) is rotatably connected to the first adapter (21); the inner peripheral wall of the adjusting limit ring (24) is provided with a sun wheel (241), and the sun wheel (241) is fixedly connected to the adjusting limit ring (24); An adjusting gear (25) is disposed on the first adapter (21). The adjusting gear (25) is rotatably connected to the first adapter (21), and the adjusting gear (25) is drively connected to the sun gear (241). The end face of the adjusting gear (25) is provided with a first arc-shaped groove (251) and a second arc-shaped groove (252) in the radial direction. The first arc-shaped groove (251) and the second arc-shaped groove (252) are arranged opposite to each other in the radial direction of the first adapter (21), and the arc-shaped bending directions of the first arc-shaped groove (251) and the second arc-shaped groove (252) are opposite. A first adjusting rod (253) is inserted into the first arc-shaped slot (251), and the first adjusting rod (253) is connected to the first adapter block (22); a second adjusting rod (254) is inserted into the second arc-shaped slot (252), and the second adjusting rod (254) is connected to the second adapter block (23).

3. The pneumatic wrench according to claim 2, characterized in that, The adjustment mechanism (20) further includes: The first connecting rod (255) is connected to the first adapter block (22); The second connecting rod (256) is connected to the second adapter block (23); The first slider (257) is slidably disposed on the first adapter (21). The first slider (257) is connected to the first connecting rod (255). The first adjusting rod (253) is connected to the first slider (257). The second slider (258) is slidably disposed on the first adapter (21), and is disposed opposite to the first slider (257) along the radial direction of the first adapter (21). The second slider (258) is connected to the second connecting rod (256), and the second adjusting rod (254) is connected to the second slider (258).

4. The pneumatic wrench according to claim 2 or 3, characterized in that, The adjustment mechanism (20) further includes: The first transmission gear (261) is connected to the sun gear (241) for transmission. The second drive shaft (262) is connected to the first drive gear (261); The second transmission gear (263) is connected to the second transmission shaft (262), and the second transmission gear (263) meshes with the adjusting gear (25); the first transmission gear (261), the second transmission shaft (262) and the second transmission gear (263) are eccentrically located on one side of the first transmission shaft (14).

5. The pneumatic wrench according to claim 2 or 3, characterized in that, The end face of the adjusting gear (25) is also provided with a third arc-shaped groove (259) in the radial direction; the first arc-shaped groove (251), the second arc-shaped groove (252) and the third arc-shaped groove (259) are evenly spaced along the circumference of the adjusting gear (25); A third adjusting rod (2510) is inserted into the third arc-shaped slot (259). The third adjusting rod (2510) is connected to a third adapter block (2513). The third adapter block (2513) is movably connected to the first adapter (21) along the radial direction of the first adapter (21).

6. The pneumatic wrench according to claim 5, characterized in that, The end face of the adjusting gear (25) is provided with a fourth arc-shaped groove (2511) in the radial direction. The first arc-shaped groove (251), the second arc-shaped groove (252), the third arc-shaped groove (259) and the fourth arc-shaped groove (2511) are evenly spaced along the circumference of the adjusting gear (25). A fourth adjusting rod (2512) is inserted into the fourth arc-shaped slot (2511). The fourth adjusting rod (2512) is connected to a fourth adapter block (2514). The fourth adapter block (2514) is movably connected to the first adapter (21) along the radial direction of the first adapter (21).

7. The pneumatic wrench according to claim 2 or 3, characterized in that, The support mechanism (10) has a second adapter (15) at one end away from the handle (13). The first drive shaft (14) passes through the second adapter (15). The adjustment limit ring (24) is sleeved on the second adapter (15) and is rotatably connected to the second adapter (15).

8. The pneumatic wrench according to claim 7, characterized in that, The pneumatic wrench also includes: The insertion mechanism (30) includes a fixing ring (31), a connecting post (32), and an auxiliary handle (33); the fixing ring (31) is sleeved on the outer periphery of the support mechanism (10), the connecting post (32) is connected to the fixing ring (31), and the auxiliary handle (33) is detachably connected to the connecting post (32).

9. The pneumatic wrench according to claim 8, characterized in that, The axial direction of the connecting post (32) extends radially along the second adapter (15), and the auxiliary handle (33) is inserted into the connecting post (32) along the axial direction of the connecting post (32). A fixing pin (321) is provided on one of the connecting post (32) and the auxiliary handle (33), and the fixing pin (321) passes through the connecting post (32) and the auxiliary handle (33) radially.

10. The pneumatic wrench according to claim 9, characterized in that, The fixing ring (31) is also provided with a fixing block (34), and the connecting post (32) is located on the side of the fixing block (34) facing away from the fixing ring (31); The fixing block (34) is provided with a fixing plate (35), which is located on one side of the connecting column (32). The fixing plate (35) is provided with an unlocking component (351) and a resetting component (352). The unlocking component (351) is rotatably connected to the fixing plate (35). One end of the resetting component (352) abuts against the unlocking component (351), and the other end of the resetting component (352) abuts against the fixing block (34). The retaining pin (321) is connected to the unlocking element (351).

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