Socket wrench

Abstract

The utility model provides a socket spanner, and relates to the technical field of spanners, the socket spanner comprises a first socket and a second socket, the periphery of the first socket is movably sleeved with the second socket, the end of the first socket is a first twisting part, the end of the second socket is a second twisting part, and the inner diameter of the second twisting part is larger than that of the first twisting part; and bolts or nuts with different specifications can be adapted. The second twisting part is provided with a first position and a second position. And at the first position, the second twisting part is flush with the end surface of the first twisting part. And at the second position, the end face of the second twisting part protrudes out of the end face of the first twisting part in the axial direction. A first boss is arranged on the outer wall face of the first sleeve, a second boss is arranged on the inner wall face of the second sleeve, and when the second twisting part is driven to be switched from the first position to the second position, the second boss moves in the direction close to the first boss and abuts against the first boss, so that the second sleeve is effectively prevented from continuing to move in the same direction, and the stability of the second twisting part is improved. And separation of the first sleeve due to excessive movement is prevented.

Description

Technical Field

[0001] This application relates to the technical field of wrenches, and more particularly, to a socket wrench. Background Art

[0002] Socket wrenches are widely used as daily tools in life. They are composed of multiple components such as hexagonal socket heads, handles, and extension bars, and are especially suitable for turning bolts or nuts in very narrow or deeply recessed positions.

[0003] In the prior art, the sockets of socket wrenches are usually of fixed size. Therefore, each socket wrench can only turn nuts of one specification, and the use function is single. When it is necessary to turn nuts of multiple specifications, it is necessary to replace sockets of different specifications and sizes multiple times, thus increasing the time cost and reducing the assembly efficiency. Utility Model Content

[0004] The purpose of this application is to provide a socket wrench for the deficiencies in the above prior art.

[0005] To achieve the above purpose, the technical solutions adopted in the embodiments of this application are as follows:

[0006] The embodiments of this application provide a socket wrench, including a first socket and a second socket. The second socket is movably sleeved on the outer periphery of the first socket. The end of the first socket is a first turning part, and the end of the second socket is a second turning part. The inner diameter of the second turning part is greater than that of the first turning part;

[0007] The second turning part has a first position and a second position. In the first position, the end face of the second turning part is flush with the end face of the first turning part. In the second position, the end face of the second turning part protrudes axially outward from the end face of the first turning part;

[0008] A first boss is provided on the outer wall surface of the first socket, and a second boss is provided on the inner wall surface of the second socket. When the second turning part is driven to switch from the first position to the second position, the second boss moves towards the direction close to the first boss and abuts against the first boss.

[0009] Optionally, a first through hole and a second through hole that communicate with each other in sequence are provided in the first turning part. The radial dimension of the first through hole is smaller than that of the second through hole, and the second through hole is a polygonal hole.

[0010] Optionally, a third through hole and a fourth through hole that communicate with each other in sequence are provided in the second turning part. The second boss is provided on the inner wall surface of the third through hole. The radial dimension of the third through hole is smaller than that of the fourth through hole, and the fourth through hole is a polygonal hole.

[0011] Optionally, the first boss is a first annular boss, and / or the second boss is a second annular boss.

[0012] Optionally, the outer wall surface of the first sleeve and the inner wall surface of the second sleeve are circumferentially limited.

[0013] Optionally, the socket wrench further includes a connecting rod. The first sleeve is fixedly sleeved on the connecting rod, and the end face of the first twisting portion protrudes axially outward from the end face of the connecting rod.

[0014] Optionally, a limiting member is provided on the outer wall surface of the first sleeve at the end away from the first boss. The second boss is driven to move between the first boss and the limiting member.

[0015] Optionally, a limiting groove is formed on the outer wall surface of the first sleeve at the end away from the first boss, and the limiting member is detachably arranged in the limiting groove.

[0016] Optionally, the limiting groove is an annular groove, and the limiting member is a limiting ring sleeved on the annular groove.

[0017] Optionally, the second boss is in clearance fit with the first sleeve, and / or the first boss is in clearance fit with the second sleeve.

[0018] The beneficial effects of the present application include:

[0019] The present application provides a socket wrench, which includes a first sleeve and a second sleeve. The second sleeve is movably sleeved on the outer periphery of the first sleeve. The end of the first sleeve is a first twisting portion, and the end of the second sleeve is a second twisting portion. The inner diameter of the second twisting portion is larger than the inner diameter of the first twisting portion to adapt to bolts or nuts of different specifications.

[0020] The second twisting portion has a first position and a second position. In the first position, the end face of the second twisting portion is flush with the end face of the first twisting portion. At this time, the user can use the first twisting portion to tighten bolts or nuts with a small diameter. In the second position, the end face of the second twisting portion protrudes axially outward from the end face of the first twisting portion. At this time, the user can use the second twisting portion to tighten bolts or nuts with a large diameter.

[0021] To ensure the stability and accuracy of the second sleeve when switching positions, a first boss is provided on the outer wall surface of the first sleeve, and a second boss is provided on the inner wall surface of the second sleeve. When the second twisting portion is driven to switch from the first position to the second position, the second boss moves towards the direction close to the first boss and abuts against the first boss. Such a design effectively limits the second sleeve from continuing to move in the same direction and prevents it from moving excessively and disengaging from the first sleeve.

[0022] Generally speaking, the socket wrench provided by the present application realizes the function of tightening bolts or nuts of various specifications in one socket wrench through a clever design, greatly improves the flexibility and assembly efficiency of use, reduces the trouble of the user changing tools frequently during the operation process, and also reduces the time cost and labor intensity. Brief Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related accompanying drawings can also be obtained based on these drawings.

[0024] Figure 1 An exploded view of a socket wrench provided for an embodiment of the present application;

[0025] Figure 2 A structural schematic diagram of a socket wrench provided for an embodiment of the present application;

[0026] Figure 3 is Figure 2 the sectional view taken along line A-A in

[0027] Reference numerals: 1 - first socket; 11 - first screwing part; 12 - first boss; 13 - limiting member; 14 - limiting groove; 2 - second socket; 21 - second screwing part; 22 - second boss; 3 - connecting rod. Detailed Description of the Embodiments

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. It should be noted that, without conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the protection scope of the present application.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0031] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present application. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0032] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0033] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0034] The embodiment of the present application provides a socket wrench, as Figures 1 to 3 shown, including a first socket 1 and a second socket 2. The second socket 2 is movably sleeved on the outer periphery of the first socket 1. The end of the first socket 1 is a first twisting part 11, and the end of the second socket 2 is a second twisting part 21. The inner diameter of the second twisting part 21 is larger than the inner diameter of the first twisting part 11 to adapt to bolts or nuts of different specifications.

[0035] The second twisting part 21 has a first position and a second position. In the first position, the end surface of the second twisting part 21 is flush with the end surface of the first twisting part 11. At this time, the user can use the first twisting part 11 to tighten bolts or nuts with a small diameter. And in the second position, the end surface of the second twisting part 21 protrudes axially outward from the end surface of the first twisting part 11 along the socket wrench. At this time, the user can use the second twisting part 21 to tighten bolts or nuts with a large diameter.

[0036] To ensure the stability and accuracy when the second socket 2 switches positions, as Figure 3As shown in the figure, a first boss 12 is provided on the outer wall surface of the first sleeve 1, and a second boss 22 is provided on the inner wall surface of the second sleeve 2. When it is necessary to tighten a bolt or nut with a large diameter, the second twisting part 21 is driven to switch from the first position to the second position. At this time, the second boss 22 moves towards the direction close to the first boss 12 and finally abuts against the first boss 12. Such a design effectively restricts the continuous movement of the second sleeve 2 in the same direction and prevents it from moving excessively and detaching from the first sleeve 1. When it is necessary to tighten a bolt or nut with a small diameter, the second twisting part 21 is driven to switch from the second position to the first position. At this time, the second boss 22 moves towards the direction away from the first boss 12 and disengages from the first boss 12.

[0037] In specific applications, the inner diameter of the first twisting part 11 of the socket wrench is designed to be 32 mm, and the inner diameter of the second twisting part 21 is designed to be 45 mm. When assembling the front fork of a tricycle, the lower M24 screw of the large nut can be fixed first using the second twisting part 21, and then the upper M24 screw of the small nut can be fixed using the first twisting part 11, which solves the trouble of constantly changing tools and improves the production efficiency of the entire assembly line.

[0038] Generally speaking, the socket wrench provided in this application realizes the function of tightening bolts or nuts of various specifications in one socket wrench through a clever design, greatly improving the flexibility of use and the assembly efficiency, reducing the trouble of users frequently changing tools during the operation process, and at the same time reducing the time cost and labor intensity.

[0039] Optionally, the first twisting part 11 is provided with a first through hole and a second through hole that are sequentially connected. The radial dimension of the first through hole is smaller than that of the second through hole, and the second through hole is a polygonal hole.

[0040] Specifically, the design of the first through hole can reduce the usage amount of metal materials, thereby reducing the production cost. Moreover, reducing the overall weight of the socket wrench also makes it easier for users to operate and improves the work efficiency.

[0041] The second through hole is designed as a polygonal hole, and its shape and size match those of the bolt or nut, usually a hexagonal hole. This polygonal design can provide a larger contact area and a better torque transmission effect, thereby ensuring that the bolt or nut can be firmly grasped and rotated during use.

[0042] In addition, the radial dimension of the first through hole is smaller than that of the second through hole, such that during the process of tightening a bolt or a nut, the bolt or the nut can be inserted into the second through hole and abut against the end face of the first through hole. This design detail greatly improves the stability and precision of the tightening process, preventing the bolt or the nut from wobbling during rotation and also preventing the bolt or the nut from sliding axially along the socket wrench within the second through hole, ensuring smooth operation and reducing possible errors.

[0043] Optionally, the second twisting portion 21 is provided with a third through hole and a fourth through hole that are sequentially communicated, the second boss 22 is disposed on the inner wall surface of the third through hole, the radial dimension of the third through hole is smaller than that of the fourth through hole, and the fourth through hole is a polygonal hole.

[0044] Specifically, a second boss 22 is provided on the inner wall surface of the second twisting portion 21, the second boss 22 is located on the inner wall surface of the third through hole, while the first boss 12 can be located on the outer wall surface of the second through hole or can be disposed on the outer wall surface of the first through hole. When the second twisting portion 21 is in the first position, the first twisting portion 11 sequentially passes through the third through hole and the fourth through hole of the second twisting portion 21, and the end face of the second through hole is flush with the end face of the fourth through hole; when the second twisting portion 21 is in the second position, the first twisting portion 11 passes through the third through hole, and the end face of the fourth through hole extends axially outward along the socket wrench beyond the end face of the second through hole. At this time, the second boss 22 abuts against the first boss 12.

[0045] The fourth through hole is designed as a polygonal hole, usually a hexagonal hole, whose shape and size are fully matched with the bolt or the nut. This polygonal design provides a larger contact area and a better torque transmission effect, ensuring that the bolt or the nut can be firmly grasped and rotated during use.

[0046] In addition, the radial dimension of the third through hole is smaller than that of the fourth through hole, such that during the process of screwing the bolt or the nut, the bolt or the nut can be smoothly inserted into the fourth through hole and stably abut against the end face of the third through hole. Such a design not only ensures the stability of the bolt or the nut but also prevents over-rotation and the situation where the bolt or the nut slides axially along the socket wrench within the fourth through hole, improving the reliability of the overall operation.

[0047] Optionally, the first boss 12 is a first annular boss, and / or the second boss 22 is a second annular boss.

[0048] Specifically, the first boss 12 is designed as a first annular boss that surrounds the outer periphery of the first through-hole or the second through-hole, capable of providing uniform support and stability. The second annular boss surrounds the inner wall surface of the third through-hole. The annular design can provide a larger contact area and more stable support. When the second twisting portion 21 is driven to switch from the first position to the second position, the second annular boss can cooperate with the first annular boss to provide a more stable limiting effect, enhancing the stability and reliability during operation. The design of the annular boss can evenly disperse the force applied to the bolt or nut, preventing overall damage or failure caused by uneven local stress. At the same time, the mutual abutment of the annular bosses makes the socket wrench exhibit higher operation precision and efficiency in practical applications.

[0049] Optionally, the outer wall surface of the first socket 1 and the inner wall surface of the second socket 2 are circumferentially limited.

[0050] Specifically, as Figure 1 shown, the outer wall surface of the first annular boss is designed as a polygonal wall surface, which is consistent with the shape of the fourth through-hole or the third through-hole of the second socket 2. In this way, when the first socket 1 and the second socket 2 are assembled together, the two can be precisely matched with each other. The circumferential limiting design ensures that there is no relative rotation between the first socket 1 and the second socket 2, thus providing stronger stability and reliability.

[0051] In addition, this design effectively prevents the sliding or loosening of the socket during operation. The mutual cooperation of the polygonal wall surface and the polygonal hole enables the first socket 1 and the second socket 2 to tightly bite when subjected to an external force, and will not cause relative displacement or rotation due to excessive torque. This not only improves the operation accuracy but also extends the service life of the tool.

[0052] Optionally, the socket wrench further includes a connecting rod 3. The first socket 1 is fixedly sleeved on the connecting rod 3, and the end surface of the first twisting portion 11 axially protrudes from the end surface of the connecting rod 3.

[0053] Specifically, as Figures 1 to 3 shown, the design of the connecting rod 3 enables the user to apply torque more easily when using the socket wrench. By providing a holding and force-applying part, the connecting rod 3 greatly improves the operation comfort and efficiency. When the user tightens or loosens bolts and nuts, the socket wrench can be more firmly controlled, reducing operation errors caused by hand slippage or uneven force application.

[0054] Secondly, the connecting rod 3 can be designed as a telescopic rod. This design allows the user to adjust the length of the connecting rod 3 according to actual needs so as to be used in different working environments and space limitations. The flexibility of the telescopic rod enables the socket wrench to perform optimally in various situations.

[0055] In terms of specific structure, the first sleeve 1 is fixedly sleeved on the connecting rod 3. In this way, the connecting rod 3 is not only tightly connected to the first sleeve 1, but also ensures the stability and reliability of the sleeve during operation. In addition, the end face of the first twisting portion 11 protrudes outward from the end face of the connecting rod 3 along the axial direction of the socket wrench. This design ensures that when the first twisting portion 11 is used, it will not be interfered by the connecting rod 3, thereby improving the convenience and efficiency of operation.

[0056] In summary, by combining the connecting rod 3 with the first sleeve 1, the socket wrench not only achieves more stable and efficient operation, but also enhances the versatility of the tool. The connecting rod 3 provides a fulcrum for easy force application and control, and the telescopic rod design further expands the scope of use of the tool, enabling it to adapt to various complex working environments.

[0057] Optionally, a limiting member 13 is provided on the outer wall surface of the first sleeve 1 at one end away from the first boss 12, and the second boss 22 is driven to move between the first boss 12 and the limiting member 13.

[0058] Specifically, during the installation of the socket wrench, the first socket 1 needs to be sleeved on the connecting rod 3, and then the second socket 2 needs to be sleeved on the first socket 1. This step ensures the correct order and position of each component, so that the socket wrench can work stably.

[0059] If Figure 1 As shown, after assembly, a limiter 13 is provided on the outer wall surface of the first sleeve 1 at the end away from the first boss 12. The design of this limiter 13 plays a key role in technical implementation. Together with the first boss 12, it limits the movement trajectory of the second boss 22 from two directions. Specifically, when the second boss 22 is driven by an external force, it can only move within the range between the first boss 12 and the limiter 13, thereby avoiding excessive movement and potential damage to the assembly.

[0060] Sufficient distance should be left between the first boss 12 and the stopper 13. This design is to enable the second screwing part 21 to switch smoothly between the first position and the second position. The first position refers to the state where the second screwing part 21 is flush with the end surface of the first screwing part 11. At this time, the first screwing part 11 can be used to tighten a small-diameter bolt or nut. In the second position, the end surface of the second screwing part 21 protrudes outwardly from the end surface of the first screwing part 11 along the axial direction. At this time, the second screwing part 21 can be used to tighten a large-diameter bolt or nut.

[0061] Through this design, the socket wrench not only has the function of adapting to multiple specifications, but also performs well in terms of structural stability and ease of operation. The reasonable configuration of the limiter 13 and the first boss 12 ensures the coordinated operation of the components during operation, avoiding loosening or damage caused by excessive movement. At the same time, the sufficient spacing design ensures the smoothness of the second twisting part 21 during the switching process, allowing users to quickly and accurately complete various operating tasks.

[0062] Optionally, a limiting groove 14 is provided on the outer wall surface of the first sleeve 1 at one end away from the first boss 12, and the limiting member 13 is detachably disposed in the limiting groove 14.

[0063] Specifically, such as Figure 1 As shown in the figure, the limiting groove 14 is provided on the first sleeve 1, which can ensure that the limiting member 13 can be firmly installed, and the detachable design of the limiting member 13 increases the flexibility and maintainability of the socket wrench. The user can conveniently install or replace the limiting member 13 according to actual needs, which not only improves the adaptability of the socket wrench, but also prolongs the service life of the tool.

[0064] Secondly, the limiter 13 is arranged in the limiter groove 14, which can effectively limit the movement range of the second boss 22, ensuring that it does not exceed the predetermined track during operation. This design ensures the stability and accuracy of the socket wrench during use and prevents functional problems caused by the failure of the limiter 13.

[0065] More importantly, the detachable design of the limiter 13 provides great convenience for the maintenance and care of the socket wrench. After long-term use, the second sleeve 2 or the first sleeve 1 of the socket wrench may be worn or damaged. By removing the limiter 13, the user can easily remove the second sleeve 2 from the first sleeve 1 for inspection or replacement. This design reduces the time cost caused by the difficulty of maintenance and care, so that the socket wrench can maintain the best working condition.

[0066] In summary, the design of providing the limiting groove 14 on the first sleeve 1 and setting the detachable limiting member 13 not only improves the operational stability of the socket wrench, but also significantly enhances the maintenance convenience of the tool.

[0067] Optionally, the limiting groove 14 is an annular groove, and the limiting member 13 is a limiting ring sleeved in the annular groove.

[0068] Specifically, such as Figure 1 ​​​​As shown, the design of the annular groove provides a stable and uniform support surface, enabling the limiting member 13 to be better fixed on the outer wall surface of the sleeve. The continuity of the annular groove ensures good contact and fixing effect of the limiting ring along the entire annular circumference, thereby preventing the limiting ring from loosening or shifting during use. This stable structural design not only enhances the operation accuracy of the socket wrench but also improves its reliability under high-intensity working conditions.

[0069] Secondly, the sleeved design of the limiting ring simplifies the installation and disassembly process of the limiting member 13. The limiting ring can be easily sleeved into the annular groove, making the installation process of the limiting member 13 rapid and simple. The user only needs to align the limiting ring with the annular groove for installation to complete the fixation, eliminating complex operation steps. Similarly, disassembling the limiting ring is also convenient, without the need for special tools, and only needs to be operated in a predetermined manner.

[0070] In summary, designing the limiting groove 14 as an annular groove and using a limiting ring sleeved therein not only improves the stability and reliability of the socket wrench but also simplifies the installation and disassembly process of the limiting member 13.

[0071] Optionally, the second boss 22 has a clearance fit with the first sleeve 1, and / or, the first boss 12 has a clearance fit with the second sleeve 2.

[0072] Specifically, the clearance fit between the second boss 22 and the first sleeve 1, and / or, the clearance fit between the first boss 12 and the second sleeve 2 ensures the smooth progress of the relative movement between the two. This clearance fit allows the second sleeve 2 to freely move axially relative to the first sleeve 1 along the socket wrench, while ensuring that the fit between the two is neither too loose to cause functional failure nor too tight to affect the operation smoothness, preventing operation difficulties or wear caused by too tight a fit. This reasonable clearance design ensures the reliability and stability of the socket wrench under different operating conditions.

[0073] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A socket wrench, characterized in that: The invention comprises a first sleeve (1) and a second sleeve (2), wherein the second sleeve (2) is movably sleeved on the outer periphery of the first sleeve (1), the end of the first sleeve (1) is a first twisting portion (11), the end of the second sleeve (2) is a second twisting portion (21), and the inner diameter of the second twisting portion (21) is greater than the inner diameter of the first twisting portion (11); The second twisting portion (21) has a first position and a second position. In the first position, the second twisting portion (21) is flush with an end surface of the first twisting portion (11). In the second position, the end surface of the second twisting portion (21) protrudes outwardly from the end surface of the first twisting portion (11) along the axial direction. A first boss (12) is provided on the outer wall surface of the first sleeve (1), and a second boss (22) is provided on the inner wall surface of the second sleeve (2); when the second twisting portion (21) is driven to switch from the first position to the second position, the second boss (22) moves in a direction close to the first boss (12) and abuts against the first boss (12).

2. The socket wrench according to claim 1, characterized in that: The first twisting portion (11) is provided with a first through hole and a second through hole which are connected in sequence, the radial dimension of the first through hole is smaller than the radial dimension of the second through hole, and the second through hole is a polygonal hole.

3. The socket wrench according to claim 1 or 2, characterized in that: The second twisting portion (21) is provided with a third through hole and a fourth through hole which are connected in sequence, the second boss (22) is arranged on the inner wall surface of the third through hole, the radial dimension of the third through hole is smaller than the radial dimension of the fourth through hole, and the fourth through hole is a polygonal hole.

4. The socket wrench according to claim 1 or 2, characterized in that: The first boss (12) is a first annular boss, and / or the second boss (22) is a second annular boss.

5. The socket wrench according to claim 1 or 2, characterized in that: The outer wall surface of the first sleeve (1) and the inner wall surface of the second sleeve (2) are limited in the circumferential direction.

6. The socket wrench according to claim 1 or 2, characterized in that: The socket wrench also includes a connecting rod (3), the first sleeve (1) is fixedly sleeved on the connecting rod (3), and the end surface of the first twisting portion (11) protrudes outwardly from the end surface of the connecting rod (3) along the axial direction.

7. The socket wrench according to claim 1 or 2, characterized in that: A limiting member (13) is provided on the outer wall surface of the first sleeve (1) at one end away from the first boss (12), and the second boss (22) is driven to move between the first boss (12) and the limiting member (13).

8. The socket wrench according to claim 7, characterized in that: A limiting groove (14) is provided on the outer wall surface of the first sleeve (1) at one end away from the first boss (12), and the limiting member (13) is detachably arranged in the limiting groove (14).

9. The socket wrench according to claim 8, characterized in that: The limiting groove (14) is an annular groove, and the limiting member (13) is a limiting ring sleeved on the annular groove.

10. The socket wrench according to claim 1 or 2, characterized in that: The second boss (22) and the first sleeve (1) are in clearance fit, and / or the first boss (12) and the second sleeve (2) are in clearance fit.

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