Multifunctional wrench

Abstract

The utility model belongs to the technical field of wrench tools, and relates to a multifunctional wrench. The multifunctional wrench is used for screwing a threaded part. The multifunctional wrench comprises a main body, a plurality of sub-wrenches and a plurality of operating pieces. The sub-wrenches are sequentially connected with the main body in a sliding mode in the sliding direction. Each sub-wrench is provided with an acting part in the sliding direction, and the acting parts in the sub-wrenches at least can be in screwing fit with two types of threaded parts. And the plurality of operating pieces are movably connected to the main body in sequence along the sliding direction. And each operating piece is in sliding connection with the corresponding sub-wrench, so that the corresponding sub-wrench is driven to slide along the sliding direction through the movement of the operating piece relative to the main body, and the acting part of the corresponding sub-wrench extends out of or retracts into the main body. According to the multifunctional wrench, the risk that the sub-wrenches are lost can be reduced, maintenance personnel can carry and store the wrench conveniently, the step that the maintenance personnel replace the wrench repeatedly can be omitted, and the working efficiency of the maintenance personnel can be improved.

Description

Technical Field

[0001] This application relates to the field of wrench tools, and more particularly to a multi-functional wrench. Background Technology

[0002] Wrenches are commonly used tools in mechanical repair, such as hex wrenches. During mechanical repair, different sizes of wrenches are needed to disassemble and assemble bolts of different specifications. Therefore, repair personnel need to prepare a variety of wrenches of different sizes before carrying them. This is not only inconvenient to carry but also prone to omissions or errors. Furthermore, a lot of time needs to be spent changing wrenches of different sizes during the repair process, which reduces work efficiency. Utility Model Content

[0003] In view of this, it is necessary to provide a multi-functional wrench that can not only be compatible with bolts of various sizes, saving maintenance personnel time from repeated replacements and improving work efficiency, but also be easy for maintenance personnel to carry.

[0004] One embodiment of this application provides a multi-functional wrench. The multi-functional wrench is used for tightening threaded parts. The multi-functional wrench includes a main body, multiple sub-wrenches, and multiple operating members. The multiple sub-wrenches are sequentially slidably connected to the main body along a sliding direction. Each sub-wrench has an action part along the sliding direction, and the action parts of the multiple sub-wrenches are capable of tightening with at least two types of threaded parts. The multiple operating members are sequentially movably connected to the main body along the sliding direction. Each operating member is slidably connected to a corresponding sub-wrench, so that the movement of the operating member relative to the main body drives the corresponding sub-wrench to slide along the sliding direction, causing the action part of the corresponding sub-wrench to extend or retract into the main body.

[0005] In the aforementioned multi-functional wrench, multiple sub-wrenches are integrated into the main body, with each operating component connected to a separate sub-wrench. During maintenance, technicians can move the corresponding sub-wrench using the corresponding operating component to tighten threaded parts of different specifications. This not only reduces the risk of losing sub-wrenches and makes them easier for technicians to carry and store, but also eliminates the need for technicians to repeatedly change wrenches, thus improving their work efficiency.

[0006] In some embodiments of this application, the working parts of multiple sub-wrenches are nested sequentially along the sliding direction, so as to tighten different threaded parts by extending one or more working parts of the main body.

[0007] On the one hand, by installing multiple sub-wrenches within the housing space, the main body can protect the sub-wrenches, reducing the risk of damage caused by external forces and extending the service life of the multi-function wrench. On the other hand, by coaxially arranging multiple sub-wrenches, the overall structure of the multi-function wrench can be made more compact, thereby reducing its size and making it easier for maintenance personnel to carry and store.

[0008] In some embodiments of this application, the operating member is rotatably connected to the main body about the sliding direction, so that the rotation of the operating member drives the corresponding sub-wrench to slide along the sliding direction, so that the working part of the corresponding sub-wrench extends out or retracts into the main body.

[0009] Maintenance personnel only need to rotate the corresponding operating part to drive the corresponding sub-wrench to slide along the sliding direction, causing the working part to extend from the main body to tighten threaded parts. By adopting a rotation operation method, not only can the operation difficulty of the multi-functional wrench be reduced, which is beneficial to the user experience of maintenance personnel, but the movement stroke of the operating part can also be reduced, which is conducive to the miniaturization design of the multi-functional wrench.

[0010] In some embodiments of this application, the main body is provided with limiting members on both sides of each operating member along the sliding direction to achieve a rotational connection between the operating member and the main body. An assembly space is formed between every two adjacent limiting members. Each operating member is disposed in an assembly space, and the limiting members are used to stop the corresponding operating member to constrain the relative position of the operating member and the main body in the sliding direction.

[0011] When the operating component rotates relative to the main body, the limiting component can stop the operating component, thereby constraining the relative position of the operating component and the main body in the sliding direction. This reduces the risk of motion interference between the operating component and the sub-wrench, helps ensure the stability and safety of the sub-wrench's movement along the sliding direction, and ultimately ensures the stable tightening of threaded parts by the multi-functional wrench.

[0012] In some embodiments of this application, the main body is further provided with a sliding hole along the sliding direction; the sub-wrench is provided with a protrusion; the protrusion slides in conjunction with the sliding hole to achieve a sliding connection between the sub-wrench and the main body; the operating member is further provided with a spiral groove; the groove slides in conjunction with the protrusion of the corresponding sub-wrench to achieve a sliding connection between the operating member and the corresponding sub-wrench.

[0013] By utilizing the combination of the groove and the protrusion, the rotational motion of the operating part can be converted into the linear motion of the sub-wrench, enabling the sub-wrench to extend and retract along the sliding direction and tighten threaded parts. The structure of the groove and the protrusion is simple, the production cost is low, and it is conducive to the mass production of multi-functional wrenches.

[0014] In some embodiments of this application, the slide groove is provided with an installation port for inserting the protrusion.

[0015] When assembling the operating part and the sub-wrench, the production and installation personnel only need to assemble the protrusion of the sub-wrench into the slide groove along the mounting opening, which helps to reduce the assembly difficulty between the operating part and the sub-wrench and improve the assembly efficiency between the operating part and the sub-wrench.

[0016] In some embodiments of this application, the main body is provided with elastic positioning elements on both sides of each sub-wrench along the sliding direction; the sub-wrench is provided with a positioning groove on the side facing the elastic positioning element, so that when the sub-wrench approaches the end of the sliding groove, the elastic positioning element corresponding to the end is engaged into the positioning groove.

[0017] The multi-functional wrench also includes multiple elastic positioning elements, which are spaced apart along the sliding direction on the main body. Each pair of elastic positioning elements forms a group, and each group corresponds to an operating element. At least a portion of each elastic positioning element extends into the receiving space and presses against the corresponding sub-wrench. The sub-wrench is provided with a positioning groove, which has a sliding direction limit position and a second limit position. When the protrusion moves to the sliding direction limit position, one elastic positioning element in the group engages in the positioning groove. When the protrusion moves to the second limit position, another elastic positioning element in the group engages in the positioning groove.

[0018] By using the elastic positioning element in conjunction with the positioning groove, the travel distance of the sub-wrench along the sliding direction can be limited, thereby reducing the risk of excessive movement of the sub-wrench, which could lead to interference and damage between the sub-wrench and external equipment, and thus helping to extend the service life of the sub-wrench.

[0019] In some embodiments of this application, the elastic positioning element includes a spring and a ball bearing; the ball bearing is elastically connected to the main body via the spring. The ball bearing is mounted on the main body, and the spring is located between the ball bearing and the main body, with one end of the spring abutting against the main body and the other end abutting against the ball bearing. The ball bearing can be pressed against the wrench under the action of the spring. When the protrusion moves to the sliding direction limit position or the second limit position, the ball bearing engages in the positioning groove.

[0020] By employing springs and ball bearings, the sliding friction between the rotating base and the housing can be transformed into rolling friction. Compared to sliding friction, rolling friction has lower frictional force, allowing for smoother relative sliding between the sub-wrench and the main body, reducing the risk of the sub-wrench getting stuck or jammed. Furthermore, when the protrusion moves to its extreme or second extreme position in the sliding direction, the ball bearing engages in the positioning groove, providing tactile feedback (such as a "click" sound), which further enhances the operator's experience.

[0021] In some embodiments of this application, the side of the operating member away from the main body is provided with a friction surface, which is configured to contact an external power source to increase the friction between the operating member and the power source.

[0022] By setting the friction surface, the risk of the power source being unable to drive the operating part to rotate due to excessive smoothness between the power source and the operating part can be reduced. It also helps the power source (such as the maintenance personnel's fingers) to drive the operating part to rotate, making operation easier.

[0023] In some embodiments of this application, the multi-functional wrench also includes a foldable handle, which is mounted on the body and configured for a user to hold.

[0024] The foldable handle design allows maintenance personnel to tighten threaded parts more effortlessly, improving their user experience. Furthermore, when not in use, the handle can be folded for easy carrying and storage. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a multi-functional wrench provided in one embodiment of this application;

[0026] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the multi-functional wrench after being cut along line II-II.

[0027] Figure 3 This application provides a schematic diagram of the structure of a neutron wrench extension according to an embodiment. Figure 1 ;

[0028] Figure 4 This application provides a schematic diagram of the structure of a neutron wrench extending according to an embodiment. Figure 2 ;

[0029] Figure 5 This application provides a schematic diagram of the structure of a neutron wrench extending according to an embodiment. Figure 3 ;

[0030] Figure 6 This application provides a schematic diagram of the structure of a neutron wrench extension according to an embodiment. Figure 4 ;

[0031] Figure 7 yes Figure 1 The diagram shown is a structural schematic of a multi-functional wrench with some operating components omitted.

[0032] Figure 8 This is a schematic diagram of the structure of the operating component and the sub-wrench in an embodiment of this application;

[0033] Figure 9 This is a schematic diagram of a structure in which multiple sub-wrenches are coaxially arranged in an embodiment of this application;

[0034] Figure 10 This is a schematic diagram of the structure of the operating component provided in an embodiment of this application;

[0035] Figure 11 yes Figure 10 A schematic diagram of the cross-sectional structure of the operating component shown after being cut along line XI-XI;

[0036] Figure 12 yes Figure 1 The diagram shows a cross-sectional structure of the multi-functional wrench after being cut along line XII-XII.

[0037] Explanation of key component symbols:

[0038] 100. Multi-functional wrench; 10. Main body; 11. Accommodating space; 12. Sliding hole; 20. Sub-wrench; 21. Acting part; 22. Protrusion; 23. Positioning groove; 24. First sub-wrench; 25. Second sub-wrench; 26. Third sub-wrench; 27. Fourth sub-wrench; 28. Fifth sub-wrench; 30. Operating component; 31. Sliding groove; 311. First limit position; 312. Second limit position; 32. Mounting port; 33. Friction surface; 34. First operating component; 35. Second operating component; 36. Third operating component; 37. Fourth operating component; 38. Fifth operating component; 40. Limiting component; 50. Assembly space; 60. Elastic positioning component; 61. Ball bearing; 62. Spring; 70. Handle. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0041] This application provides a multi-functional wrench. The multi-functional wrench is used for tightening threaded parts. The multi-functional wrench includes a main body, multiple sub-wrenches, and multiple operating members. At least a portion of each sub-wrench is mounted to the main body, and each sub-wrench has an action part that engages with the threaded part; the action parts in different sub-wrenches can tighten different threaded parts. Multiple operating members are mounted to the main body, and each operating member is connected to one sub-wrench. The operating members are configured to drive the corresponding sub-wrench to move, so that the multi-functional wrench can tighten different threaded parts through different sub-wrenches.

[0042] In the aforementioned multi-functional wrench, multiple sub-wrenches are integrated into the main body, with each operating component connected to a separate sub-wrench. During maintenance, technicians can move the corresponding sub-wrench using the corresponding operating component to tighten threaded parts of different specifications. This not only reduces the risk of losing sub-wrenches and makes them easier for technicians to carry and store, but also eliminates the need for technicians to repeatedly change wrenches, thus improving their work efficiency.

[0043] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] Please see Figure 1 and Figure 2 One embodiment of this application provides a multi-functional wrench 100. The multi-functional wrench 100 is used for tightening threaded parts (not shown). The threaded parts can be bolts, screws, etc., and this application does not limit this; those skilled in the art can choose according to the actual situation.

[0045] In this embodiment, the multi-functional wrench 100 includes a main body 10, a plurality of sub-wrenches 20, and a plurality of operating components 30. At least a portion of each sub-wrench 20 is mounted on the main body 10, and each sub-wrench 20 is provided with an action part 21 that engages with a threaded component. The action part 21 in different sub-wrenches 20 can tighten different threaded components.

[0046] It is worth noting that the aforementioned different threaded components can refer to different threaded component sizes, different threaded component types, or both different threaded component sizes and types. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0047] In this embodiment, the actuating part 21 is a hexagonal socket. By using a hexagonal socket, the sub-wrench 20 can be used for both internal and external hexagonal wrenches.

[0048] In other embodiments, the functional part 21 may also be a structure of other shapes. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0049] Please continue reading. Figure 1 and Figure 2 In this embodiment, multiple operating elements 30 are installed on the main body 10, and each operating element 30 is connected to a sub-wrench 20. The operating element 30 is configured to drive the corresponding sub-wrench 20 to move, so that the multi-functional wrench 100 can tighten different threaded parts through different sub-wrench 20.

[0050] Understandably, during the maintenance process, maintenance personnel can use the corresponding operating part 30 to drive the corresponding sub-wrench 20 to move according to the specifications of the actual threaded parts (specifically, the size, type, etc.) in order to tighten threaded parts of different specifications.

[0051] The multi-functional wrench 100 provided in this application integrates multiple sub-wrenches 20 onto the main body 10, and each operating part 30 is connected to a sub-wrench 20. This not only reduces the risk of losing the sub-wrenches 20 and makes it convenient for maintenance personnel to carry and store, but also eliminates the step of maintenance personnel repeatedly changing wrenches, which helps to improve the work efficiency of maintenance personnel.

[0052] Please see Figures 2 to 6 For example, there are five sub-wrenches 20, designated as first sub-wrench 24, second sub-wrench 25, third sub-wrench 26, fourth sub-wrench 27, and fifth sub-wrench 28. The size of the working part 21 in the first sub-wrench 24 is 3 mm, in the second sub-wrench 25 it is 4 mm, in the third sub-wrench 26 it is 5 mm, in the fourth sub-wrench 27 it is 6 mm, and in the fifth sub-wrench 28 it is 8 mm. It should be noted that the size of the working part 21 specifically refers to the length of the diagonal in the hexagonal socket.

[0053] There are five operating components 30, which are defined as the first operating component 34, the second operating component 35, the third operating component 36, the fourth operating component 37, and the fifth operating component 38. The first operating component 34 is connected to the first sub-wrench 24, the second operating component 35 is connected to the second sub-wrench 25, the third operating component 36 is connected to the third sub-wrench 26, the fourth operating component 37 is connected to the fourth sub-wrench 27, and the fifth operating component 38 is connected to the fifth sub-wrench 28.

[0054] When it is necessary to tighten a 3mm hex bolt, the maintenance personnel drive the first sub-wrench 24 to move through the first operating element 34, and tighten the 3mm hex bolt through the first sub-wrench 24 to remove the 3mm hex bolt from the target object (which can be equipment, wall, etc.).

[0055] When maintenance personnel need to tighten a 4mm hex bolt, they use the second operating element 35 to move the second sub-wrench 25 and tighten the 4mm hex bolt using the second sub-wrench 25 to remove the 4mm hex bolt from the target object.

[0056] When maintenance personnel need to tighten a 5mm hex bolt, they use the third operating element 36 to move the third sub-wrench 26 and tighten the 5mm hex bolt using the third sub-wrench 26 to remove the 5mm hex bolt from the target object.

[0057] When maintenance personnel need to tighten a 6mm hex bolt, they drive the fourth sub-wrench 27 to move via the fourth operating element 37 and tighten the 6mm hex bolt via the fourth sub-wrench 27 to remove the 6mm hex bolt from the target object.

[0058] When maintenance personnel need to tighten an 8mm hex bolt, they use the fifth operating element 38 to move the fifth sub-wrench 28 and tighten the 8mm hex bolt using the fifth sub-wrench 28 to remove the 8mm hex bolt from the target object.

[0059] Please refer to the following: Figures 7 to 9 In this embodiment, the first direction is defined as the turning axis direction of the multi-functional wrench 100, and the main body 10 is provided with a receiving space 11. Multiple sub-wrenches 20 are coaxially arranged and installed at intervals along the first direction in the receiving space 11, and the working parts 21 in different sub-wrenches 20 are nested together.

[0060] Understandably, when using the multi-function wrench 100, the maintenance personnel drive the corresponding sub-wrench 20 to move via the corresponding operating element 30. The working part 21 of the corresponding sub-wrench 20 extends out of the receiving space 11 and tightens the threaded part of the corresponding specification. When the multi-function wrench 100 is not used, the maintenance personnel can drive the corresponding sub-wrench 20 to move in the opposite direction (specifically, in the opposite direction to the extension direction) via the corresponding operating element 30, so that the working part 21 of the corresponding sub-wrench 20 retracts into the receiving space 11.

[0061] On the one hand, by installing multiple sub-wrenches 20 in the receiving space 11, the main body 10 can protect the sub-wrenches 20, reduce the risk of damage to the sub-wrenches 20 due to external forces, and help extend the service life of the multi-functional wrench 100.

[0062] On the other hand, by setting multiple sub-wrenches 20 coaxially, the overall structure of the multi-function wrench 100 can be made more compact, thereby reducing the size of the multi-function wrench 100 and making it more convenient for maintenance personnel to carry and store.

[0063] In other embodiments, the multiple sub-wrenches 20 can also be set independently, which is beneficial to improving the flexibility of the multi-functional wrench 100. For example, when one or more of the multiple sub-wrenches 20 are damaged, the remaining sub-wrenches 20 can still be used normally. For example, the main body 10 is provided with multiple receiving spaces 11, and each sub-wrench 20 is installed in one receiving space 11.

[0064] Please see Figure 2In this embodiment, the operating member 30 is rotatably mounted on the main body 10. When the operating member 30 rotates relative to the main body 10, it can drive the corresponding sub-wrench 20 to extend and retract along the first direction. Understandably, when using the multi-functional wrench 100, the maintenance personnel only need to rotate the corresponding operating member 30 to drive the corresponding sub-wrench 20 to extend and retract along the first direction to tighten threaded parts.

[0065] By adopting a rotation operation method, the operation difficulty of the multi-function wrench 100 can be reduced, which is conducive to improving the user experience of maintenance personnel; it can also reduce the movement stroke of the operating part 30, which is conducive to the miniaturization design of the multi-function wrench 100.

[0066] In other embodiments, the operating element 30 may be operated by pressing or other methods. This application does not limit the operation in this regard, and those skilled in the art can choose according to the actual situation.

[0067] Please refer to the following: Figures 8 to 11 In this embodiment, the operating member 30 has a groove 31 on the side facing the main body 10, and the groove 31 is spiral-shaped. The main body 10 has a sliding hole 12 extending in a first direction, and the sliding hole 12 is connected to the receiving space 11. The sub-wrench 20 has a protrusion 22, which passes through the sliding hole 12 and extends into the groove 31.

[0068] When the operating member 30 rotates relative to the main body 10, the protrusion 22 can slide synchronously in the slide groove 31 and the slide hole 12, so that the operating member 30 can drive the corresponding sub-wrench 20 to extend and retract in the first direction.

[0069] By engaging the groove 31 and the protrusion 22, the rotational motion of the operating member 30 can be converted into the linear motion of the sub-wrench 20, enabling the sub-wrench 20 to extend and retract along the first direction and tighten threaded parts. The groove 31 and the protrusion 22 have a simple structure and low production cost, which is beneficial for the mass production of the multi-functional wrench 100.

[0070] In other embodiments, the operating member 30 and the sub-wrench 20 may also be threaded together so that the operating member 30 can drive the corresponding sub-wrench 20 to extend and retract in the first direction.

[0071] For example, the operating member 30 has an internal thread (not shown) on the side facing the body 10, and the body 10 has a sliding hole 12 extending in a first direction, which communicates with the receiving space 11. The sub-wrench 20 has a protrusion 22, which has an external thread (not shown).

[0072] The protrusion 22 passes through the sliding hole 12, and the internal thread and the external thread are engaged. When the operating member 30 rotates relative to the main body 10, the protrusion 22 can slide synchronously in the sliding groove 31 and the sliding hole 12, so that the operating member 30 can drive the corresponding sub-wrench 20 to extend and retract in the first direction.

[0073] Please refer to the following: Figure 1 , Figure 2 as well as Figure 7 In this embodiment, the multi-functional wrench 100 further includes a plurality of limiting members 40, which are spaced apart along a first direction on the main body 10, and an assembly space 50 is formed between every two adjacent limiting members 40. Each operating member 30 is disposed within an assembly space 50, and the limiting members 40 are configured to stop the corresponding operating member 30 to constrain the relative position of the operating member 30 and the main body 10 in the first direction.

[0074] Understandably, when the operating member 30 rotates relative to the main body 10 and the protrusion 22 slides synchronously within the slide groove 31 and the slide hole 12, the operating member 30 will tend to move along the first direction. At this time, the limiting member 40 can stop the operating member 30 to constrain the relative position of the operating member 30 and the main body 10 in the first direction.

[0075] This reduces the risk of motion interference between the operating part 30 and the sub-wrench 20, helps ensure the stability and safety of the sub-wrench 20 moving in the first direction, and thus ensures that the multi-functional wrench 100 can stably tighten threaded parts.

[0076] Please refer to the following: Figures 8 to 10 In this embodiment, the operating component 30 is provided with an installation port 32, which is connected to the slide groove 31. The protrusion 22 enters into the slide groove 31 through the installation port 32, which helps to reduce the assembly difficulty between the operating component 30 and the sub-wrench 20 and improve the assembly efficiency between the operating component 30 and the sub-wrench 20.

[0077] For example, when the operating part 30 and the sub-wrench 20 are assembled, the production and installation personnel only need to assemble the protrusion 22 of the sub-wrench 20 into the slide groove 31 along the mounting opening 32.

[0078] Please refer to the following: Figure 7 , Figures 10 to 12 In this embodiment, the multi-functional wrench 100 further includes a plurality of elastic positioning elements 60, which are spaced apart along a first direction on the main body 10. Every two elastic positioning elements 60 form an elastic positioning element group (not shown), and each elastic positioning element group corresponds to an operating element 30. At least a portion of each elastic positioning element 60 extends into the receiving space 11 and presses against the corresponding sub-wrench 20.

[0079] The sub-wrench 20 is provided with a positioning groove 23, and the sliding groove 31 has a first limit position 311 and a second limit position 312. When the protrusion 22 moves to the first limit position 311, one of the elastic positioning members 60 in the elastic positioning member group engages in the positioning groove 23. When the protrusion 22 moves to the second limit position 312, the other elastic positioning member 60 in the elastic positioning member group engages in the positioning groove 23.

[0080] By cooperating with the elastic positioning element 60 and the positioning groove 23, the movement stroke of the sub-wrench 20 along the first direction can be limited, thereby reducing the risk of the sub-wrench 20 interfering with and being damaged by external equipment due to excessive movement distance of the sub-wrench 20, which is beneficial to extending the service life of the sub-wrench 20.

[0081] Please see Figure 12 In this embodiment, the elastic positioning member 60 includes a spring 62 and a ball bearing 61. The ball bearing 61 is mounted on the main body 10, and the spring 62 is located between the ball bearing 61 and the main body 10. One end of the spring 62 abuts against the main body 10, and the other end abuts against the ball bearing 61. The ball bearing 61 can be pressed against the sub-wrench 20 under the action of the spring 62. When the protrusion 22 moves to the first limit position 311 or the second limit position 312, the ball bearing 61 is engaged in the positioning groove 23.

[0082] By employing spring 62 and ball bearing 61, the sliding friction between the rotating seat and the housing can be transformed into rolling friction. Compared to sliding friction, rolling friction has less frictional force, which allows for smoother relative sliding between the sub-wrench 20 and the main body 10, reducing the risk of the sub-wrench 20 getting stuck or jammed.

[0083] In addition, when the protrusion 22 moves to the first limit position 311 or the second limit position 312, the ball 61 engages in the positioning groove 23, which can generate tactile feedback (such as a "click" positioning), which helps to improve the operating experience of maintenance personnel.

[0084] In other embodiments, the elastic positioning element 60 may also be other suitable structures, which are not limited in this application. Those skilled in the art can choose according to the actual situation.

[0085] Please refer to the following: Figure 1 and Figure 10 In this embodiment, the operating member 30 is provided with a friction surface 33 on the side away from the main body 10. The friction surface 33 is configured to contact an external power source to increase the friction between the operating member 30 and the power source.

[0086] By setting the friction surface 33, the risk that the power source cannot drive the operating part 30 to rotate due to excessive smoothness between the power source and the operating part 30 can be reduced. It also helps the power source (such as the maintenance personnel's fingers) to drive the operating part 30 to rotate, making the operation easier.

[0087] In this embodiment, the side of the operating member 30 facing away from the main body 10 is knurled to form the aforementioned friction surface 33. When a maintenance worker's fingers grip the operating member 30 and drive it to rotate, the knurling comes into contact with the maintenance worker's fingers.

[0088] In other embodiments, the aforementioned friction surface 33 can also be formed by providing multiple protrusions or stripes on the side of the operating member 30 away from the main body 10. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0089] Please see Figure 1 In this embodiment, the multi-functional wrench 100 also includes a foldable handle 70, which is mounted on the body 10 and configured for the user to hold.

[0090] Understandably, when using the multi-function wrench 100, the repairman can unfold the handle 70 and grip it to tighten threaded parts. The unfolded handle 70 forms a lever-like structure, allowing the repairman to tighten threaded parts with less effort, thus improving the user experience.

[0091] When not in use, the multi-function wrench 100 can be folded 70 degrees by the repair personnel to reduce its space occupation and improve its portability.

[0092] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A multi-functional wrench for tightening threaded parts, characterized in that, The multi-functional wrench includes: main body; Multiple sub-wrenches are sequentially slidably connected to the main body along a sliding direction; each sub-wrench is provided with an action part along the sliding direction; the action part of the multiple sub-wrenches is capable of tightening and engaging with at least two types of threaded parts. Multiple operating components are sequentially and movably connected to the main body along the sliding direction; each operating component is slidably connected to a corresponding sub-wrench, so that the movement of the operating component relative to the main body drives the corresponding sub-wrench to slide along the sliding direction, causing the working part of the corresponding sub-wrench to extend or retract into the main body.

2. The multi-functional wrench according to claim 1, characterized in that, The working parts of the multiple sub-wrenches are nested sequentially along the sliding direction, so as to tighten different threaded parts by extending one or more of the working parts of the main body.

3. The multi-functional wrench according to claim 1, characterized in that, The operating component is rotatably connected to the main body about the sliding direction, so that the rotation of the operating component drives the corresponding sub-wrench to slide along the sliding direction, causing the working part of the corresponding sub-wrench to extend or retract into the main body.

4. The multi-functional wrench according to claim 3, characterized in that, The main body is provided with limiting members on both sides of each of the operating components along the sliding direction to realize the rotational connection between the operating component and the main body.

5. The multi-functional wrench according to claim 4, characterized in that, The main body is also provided with a sliding hole along the sliding direction; the sub-wrench is provided with a protrusion; the protrusion slides in conjunction with the sliding hole to achieve a sliding connection between the sub-wrench and the main body; The operating component is also provided with a spiral groove; the groove slides in conjunction with the protrusion of the corresponding sub-wrench to achieve a sliding connection between the operating component and the corresponding sub-wrench.

6. The multi-functional wrench according to claim 5, characterized in that, The slide groove has an installation port for inserting the protrusion.

7. The multi-functional wrench according to claim 5, characterized in that, The main body is provided with elastic positioning elements on both sides of each of the sub-wrenches along the sliding direction; the sub-wrenches are provided with positioning grooves on the side facing the elastic positioning elements, so that when the sub-wrenches approach the end of the sliding groove, the elastic positioning element corresponding to the end is engaged into the positioning groove.

8. The multi-functional wrench according to claim 7, characterized in that, The elastic positioning element includes a spring and a ball bearing; the ball bearing is elastically connected to the main body via the spring.

9. The multi-functional wrench according to any one of claims 1 to 8, characterized in that, The operating component has a friction surface on the side opposite to the main body. The friction surface is configured to contact an external power source to increase the friction between the operating component and the power source.

10. The multi-functional wrench according to any one of claims 1 to 8, characterized in that, The multi-functional wrench also includes a foldable handle, which is mounted on the body and configured for the user to grip.

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