Wrench

Abstract

The utility model provides a wrench which comprises a wrench body provided with a first connecting end and a second connecting end. One end of the adjusting part is used for being rotatably connected with the first connecting end, and the end, away from the first connecting end, of the adjusting part is used for being adjustably connected with the second connecting end through a rotating part; wherein the first connecting end, the second connecting end and the adjusting component jointly form a fastening space used for fastening a to-be-fastened piece, so that the fastening space is enlarged or reduced by rotating the rotating component, and the problem that in the prior art, a wrench cannot adapt to filters of different sizes is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to a wrench. Background Art

[0002] When it comes to diesel engine maintenance, regular filter replacement is crucial for ensuring efficient engine operation and extending its service life. This operation not only requires frequent operation but also demands extremely high standards for precision and efficiency. However, traditional filter wrench designs are insufficient for the diverse filter specifications. Their single adaptability means that every time a filter of a different size is used, maintenance personnel must either be equipped with multiple specialized wrenches or spend additional time and effort replacing the wrench head, which invisibly increases the complexity and cost burden of maintenance work.

[0003] Furthermore, traditional wrenches often rely on manual operation to rotate the filter, which is not only inefficient but also prone to damage to the filter or engine components due to improper force control in high-pressure environments, and even poses safety risks. Traditional wrenches, lacking automation and universal design, are unable to meet the modern automotive industry's urgent needs for rapid response, efficient maintenance, and cost control. Their limitations are becoming increasingly prominent in the context of a rapidly developing industry.

[0004] In summary, the filter wrenches in the existing technology have significant shortcomings in adaptability, efficiency and safety. An innovative design is urgently needed to break through the limitations of traditional tools and achieve efficient, automated and universal filter disassembly and assembly, while reducing maintenance costs and improving the safety and convenience of overall operations. Utility Model Content

[0005] The main purpose of the utility model is to provide a wrench to solve the problem that the wrenches in the prior art cannot be adapted to filters of different sizes.

[0006] In order to achieve the above object, according to one aspect of the present utility model, a wrench is provided, comprising: a wrench body having a first connecting end and a second connecting end;

[0007] an adjusting component, wherein one end of the adjusting component is used to be rotatably connected to the first connecting end, and an end of the adjusting component away from the first connecting end is used to be adjustably connected to the second connecting end via the rotating component;

[0008] The first connecting end, the second connecting end and the adjusting component together form a fastening space for fastening the component to be fastened, so that the fastening space can be expanded or reduced by rotating the rotating component.

[0009] Furthermore, the adjusting component includes:

[0010] The adjusting belt has a first side surface, and the first side surface is provided with a plurality of protrusions distributed along its extending direction.

[0011] Furthermore, the adjusting component also includes:

[0012] The tensioning component has one end provided on the rotating component and the other end connected to the adjusting belt, so that when the rotating component rotates, the end of the adjusting belt close to the second connection end moves toward the direction close to the rotating component.

[0013] Furthermore, the wrench body further includes a receiving groove provided at the second connecting end;

[0014] The locking piece has one end rotatably arranged in the accommodating groove, and the other end of the locking piece is adapted to cooperate with a portion of the second side surface of the adjusting belt relatively close to the second connecting end, so as to expand the fastening space by controlling the locking piece.

[0015] Furthermore, the locking element includes:

[0016] A locking portion, the locking portion is arc-shaped, and an end of the locking portion closer to the first connecting end is provided with a clamping portion;

[0017] A step portion is provided on a side of the second side surface relatively close to the second connecting end and is engaged with the engaging portion;

[0018] The elastic member is arranged in the accommodating groove, one end of the elastic member is connected to the rotating member, and the other end is connected to the inner side wall of the locking portion. Through the cooperation of the locking member and the elastic member, the fastening space is expanded or reduced.

[0019] Furthermore, an escape portion is provided at one end of the accommodating groove close to the second connecting end, so as to form an escape space for the movement of the locking member when the locking member cooperates with the elastic member.

[0020] Furthermore, the adjusting component also includes:

[0021] A chuck, one end of which is rotatably connected to the first connecting end via a pin shaft, and the other end of which is connected to the adjusting belt.

[0022] Furthermore, the wrench body comprises:

[0023] handle;

[0024] A first transition section, the first transition section is arc-shaped and has a first connecting end;

[0025] A second transition section, the second transition section is arc-shaped and has a second connecting end;

[0026] The first transition section, the second transition section and the handle are detachably connected, or the first transition section, the second transition section and the handle are integrally formed.

[0027] Furthermore, the wrench also includes:

[0028] a tensioning channel, wherein the tensioning member is located in the tensioning channel, and one end of the tensioning member is windably disposed on the rotating member, and / or;

[0029] The tensioning component is a tensioning rope, or the tensioning component is a tensioning spring.

[0030] Furthermore, the wrench also includes:

[0031] A rotating hole, which is provided on the second connecting end;

[0032] The rotating component includes a rotating shaft rotatably arranged in the rotating hole, the rotating shaft is movably connected to the adjusting component, and the rotating component also includes a knob arranged at one end of the rotating shaft, so that the fastening space can be expanded or reduced by rotating the knob.

[0033] With the technical solution of this utility model, the wrench body, adjustment component, and rotating component work together to form an adjustable tightening space during use. The user first aligns the wrench's tightening space with the fastener to be tightened. Then, by rotating the rotating component, the user adjusts the length of the adjustment component's outer portion to adapt the tightening space to the size of the fastener. Once the tightening space precisely fits the fastener, the wrench securely grips the fastener. The user then applies rotational force through the wrench's handle, achieving efficient assembly and disassembly of the fastener.

[0034] Through the design of the adjusting part and the rotating part, the wrench of this application can adapt to filters and other fasteners of various sizes and shapes, without the need for frequent tool replacement, which greatly improves work efficiency and scope of application. The user can quickly adjust the size of the fastening space through the simple operation of the rotating part, which greatly simplifies the disassembly and assembly process of the fasteners and reduces the difficulty of operation and work intensity. The flexible adjustment of the adjusting part and the precise control of the rotating part make the fastening process more stable and controllable, effectively avoiding damage to fasteners or engine components due to improper operation, and ensuring the safe operation of equipment such as diesel engines. Due to its versatility and high efficiency, it reduces the need for a variety of special tools in maintenance work, thereby reducing the cost of purchasing tools and maintenance costs, and providing a cost-effective and efficient solution for the maintenance of heavy machinery and equipment.

[0035] In summary, the wrench design of the utility model, through its unique adjustment mechanism, realizes efficient, precise and safe disassembly and assembly of various fasteners. It is an ideal choice for improving diesel engine maintenance efficiency, ensuring safe operation of equipment and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0037] Figure 1 The figure shows the overall structure of the wrench according to the embodiment of the present application;

[0038] Figure 2 A cross-sectional view of a wrench according to an embodiment of the present application is shown;

[0039] Figure 3 Shown Figure 2 An enlarged schematic diagram of point A of the wrench in FIG.

[0040] The above drawings include the following reference numerals:

[0041] 1. Wrench body; 101. Handle; 102. First transition section; 103. Second transition section; 2. Adjusting component; 201. Adjusting belt; 202. Protrusion; 3. Rotating component; 301. Rotating shaft; 302. Knob; 4. Tensioning component; 5. Receiving groove; 501. Locking part; 502. Clamping part; 503. Step part; 504. Elastic part; 6. Avoiding part; 7. Locking component; 8. Chuck; 9. Pin shaft; 11. Tensioning channel; 12. Rotating hole. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] When it comes to diesel engine maintenance, regular filter replacement is crucial for ensuring efficient engine operation and extending its service life. This operation not only requires frequent operation but also demands extremely high standards for precision and efficiency. However, traditional filter wrench designs are insufficient for the diverse filter specifications. Their single adaptability means that every time a filter of a different size is used, maintenance personnel must either be equipped with multiple specialized wrenches or spend additional time and effort replacing the wrench head, which invisibly increases the complexity and cost burden of maintenance work.

[0044] Furthermore, traditional wrenches often rely on manual operation to rotate the filter, which is not only inefficient but also prone to damage to the filter or engine components due to improper force control in high-pressure environments, and even poses safety risks. Traditional wrenches, lacking automation and universal design, are unable to meet the modern automotive industry's urgent needs for rapid response, efficient maintenance, and cost control. Their limitations are becoming increasingly prominent in the context of a rapidly developing industry.

[0045] In summary, the filter wrenches in the existing technology have significant shortcomings in adaptability, efficiency and safety. An innovative design is urgently needed to break through the limitations of traditional tools and achieve efficient, automated and universal filter disassembly and assembly, while reducing maintenance costs and improving the safety and convenience of overall operations.

[0046] In order to solve the above problems, the present application provides a wrench, comprising: a wrench body 1, the wrench body 1 having a first connecting end and a second connecting end;

[0047] an adjusting component 2, one end of the adjusting component 2 being rotatably connected to the first connecting end, and an end of the adjusting component 2 away from the first connecting end being adjustably connected to the second connecting end via a rotating component 3;

[0048] The first connecting end, the second connecting end and the adjusting component 2 together form a fastening space for fastening a component to be fastened, so that the fastening space can be expanded or reduced by rotating the rotating component 3.

[0049] Specifically, the present application provides a wrench, such as Figure 1 The structure of the wrench disclosed in this application mainly includes three core components: a wrench body 1, an adjusting part 2, and a rotating part 3. The wrench body 1 is the main structure of the entire wrench, and one end is designed as a first connecting end and the other end is a second connecting end. The special design of these two ends provides a basis for the connection of the adjusting part 2, ensuring the stability of the rotating part 3 and the convenience of operation. One end of the adjusting part 2 is rotatably connected to the first connecting end, and the other end is adjustable with the second connecting end through the rotating part 3. The flexibility of the adjusting part 2 lies in that it can form a dynamic connection with the two ends of the wrench body 1, and adapt to different sizes and shapes of the fasteners by adjusting its own position and angle. The rotating part 3 is located at the connection point between the adjusting part 2 and the second connecting end. The position of the adjusting part 2 can be adjusted by rotating it, thereby controlling the size of the fastening space. The core of this design is that the user can adjust the fastening space according to the size of the fastener through simple operation, achieving efficient and accurate fastening and disassembly.

[0050] During use, the wrench body 1, adjustment component 2, and rotating component 3 work together to form an adjustable tightening space. The user first aligns the wrench's tightening space with the object to be tightened. Then, by rotating the rotating component 3, the user adjusts the outer portion of the adjustment component 2 to adjust the tightening space to the size of the object. Once the tightening space precisely fits the object, the wrench securely grips the fastener. The user can then apply rotational force through the handle of the wrench body 1, achieving efficient assembly and disassembly of the fastener.

[0051] Through the design of the adjusting component 2 and the rotating component 3, the present application allows the wrench to adapt to filters and other fasteners of various sizes and shapes, eliminating the need for frequent tool replacement, greatly improving work efficiency and scope of application. The user can quickly adjust the size of the fastening space simply by operating the rotating component 3, greatly simplifying the fastener disassembly and assembly process, and reducing operational difficulty and work intensity. The flexible adjustment of the adjusting component 2 and the precise control of the rotating component 3 make the fastening process more stable and controllable, effectively avoiding damage to fasteners or engine components due to improper operation, and ensuring the safe operation of equipment such as diesel engines. Due to its versatility and high efficiency, it reduces the need for a variety of special tools in maintenance work, thereby reducing tool purchase costs and maintenance costs, and providing an economical and efficient solution for the maintenance of heavy machinery and equipment.

[0052] In summary, the wrench design of the utility model, through its unique adjustment mechanism, realizes efficient, precise and safe disassembly and assembly of various fasteners. It is an ideal choice for improving diesel engine maintenance efficiency, ensuring safe operation of equipment and reducing maintenance costs.

[0053] Furthermore, the adjusting component 2 includes:

[0054] The adjusting belt 201 has a first side surface, and a plurality of protrusions 202 distributed along the extending direction of the first side surface are provided on the first side surface.

[0055] Specifically, the adjusting component 2 includes an adjusting belt 201, one end of the adjusting belt 201 is used to be rotatably connected to the first connecting end, and the other end is used to be connected to the second connecting end. The adjusting belt 201 includes a first side surface and a second side surface, wherein the first side surface is located in the entire fastening space, and a plurality of protrusions 202 are provided on the first side surface. The plurality of protrusions 202 are arranged in sequence along the extension direction of the adjusting belt 201, and there is a certain interval between each protrusion 202. When the wrench is used to clamp the filter, the protrusions 202 can be used to increase the friction between the wrench and the filter.

[0056] Specifically, the adjusting component 2 of the present invention, more specifically, is composed of an adjusting belt 201. The core of its design is to provide a fastener disassembly and assembly solution that is both flexible and has a friction-enhancing mechanism. One end of the adjusting belt 201 is rotatably connected to the first connecting end of the wrench body 1, allowing the adjusting belt 201 to rotate freely within a certain range to accommodate filters of different sizes. The other end is connected to the second connecting end through a rotating component 3 to adjust the size of the fastening space. The innovation of the adjusting belt 201 is that its first side, that is, the side facing the inside of the fastening space, is provided with a plurality of protrusions 202. These protrusions 202 are arranged in an orderly manner along the extension direction of the adjusting belt, maintaining a certain interval between each other, forming a unique friction-enhancing structure. When the wrench clamps the filter or other fasteners, these protrusions 202 can fit tightly to the surface of the fastener, and by increasing the friction coefficient of the contact surface, effectively prevent the fastener from slipping during the twisting process, thereby ensuring the stability and reliability of the operation.

[0057] The protrusion 202 on the adjustment belt 201 significantly enhances the friction between the wrench and the filter, and can stably clamp the fastener even in oily or slippery conditions, avoiding the problem of traditional tools easily slipping during operation, and improving disassembly and assembly efficiency and safety.

[0058] By combining the adjustment strap 201 with the rotating component 3, the wrench can flexibly adapt to various filter sizes, eliminating the need to replace wrench heads of varying sizes. This significantly reduces maintenance costs and increases the tool's versatility. The rotatable and adjustable connection of the adjustment strap 201 allows the user to easily and precisely adjust the wrench's tightening space, simplifying the fastener installation and removal process and reducing operational difficulty.

[0059] Whether removing or installing filters, this wrench design significantly improves operational efficiency and reduces repair time, making it invaluable for the rapid maintenance of large mining trucks and heavy machinery. Its design flexibility and efficiency reduce the need for multiple specialized tools, significantly reducing tool acquisition and maintenance costs in the long term.

[0060] In summary, the wrench design of the present invention enhances friction by adding a protrusion 202 to the adjustment belt 201, and combines it with an adjustable fastening space mechanism to achieve efficient, stable and universal disassembly and assembly of fasteners such as filters. It is an innovative solution to improve work efficiency, reduce costs and ensure operational safety in the field of diesel engine maintenance.

[0061] Furthermore, the adjusting component 2 also includes: a tensioning component 4, one end of the tensioning component 4 is arranged on the rotating component 3, and the other end thereof is connected to the adjusting belt 201, so that when the rotating component 3 rotates, the end of the adjusting belt 201 close to the second connection end moves toward the direction close to the rotating component 3.

[0062] Specifically, the adjustment member 2 of the present invention further includes a key component: a tensioning member 4. One end of this member is fixed to the rotating member 3, and the other end is connected to the adjustment strap 201, forming a linkage mechanism. When the rotating member 3 rotates, the tensioning member 4 pulls the adjustment strap 201 accordingly, causing the end of the adjustment strap 201 closest to the second connection end to move toward the rotating member 3. This process effectively achieves dynamic adjustment of the tightening space.

[0063] The operating principle is as follows: the user rotates the rotating component 3, which in turn activates the tensioning component 4, pulling one end of the adjustment strap 201 toward the rotating component 3. This causes the other end of the adjustment strap 201, connected to the first connection end, to move accordingly due to its rotatable connection, ultimately expanding or contracting the tightening space. This linkage mechanism ensures that the wrench can precisely adjust the clamping force and range when clamping filters or other fasteners, providing a more stable and efficient tightening effect.

[0064] The linkage design of the tensioning component 4 and the rotating component 3 enables the user to precisely control the movement of the adjustment belt 201 through a rotating action, achieving fine-tuning of the fastening space and ensuring the flexibility and accuracy of the wrench during operation. Under the rotational force of the rotating component 3, the tensioning component 4 can effectively tighten the adjustment belt 201, further enhancing the contact force between the fastener and the wrench, making it easy to assemble and disassemble even high-strength fasteners. The adjustment of the fastening space can be completed by rotating a single rotating component 3, which simplifies the operating steps, reduces the difficulty of operation, and improves the operating efficiency. The linkage mechanism between the tensioning component 4 and the adjustment belt 201 enables the wrench to adapt to fasteners of different sizes and shapes, greatly broadening its application range in diesel engine maintenance, mining truck maintenance and other fields. This design reduces the need for multiple special tools and reduces maintenance costs, while also reducing the weight and volume of tools carried, and improving the convenience of on-site work.

[0065] In summary, the introduction of the tightening component 4 not only enhances the tightening effect and adjustment flexibility of the wrench, but also simplifies the operation process and broadens the scope of application. It is an important innovation in the field of diesel engine filter maintenance to improve efficiency, reduce costs and ensure operational safety.

[0066] Furthermore, the wrench body 1 further includes a receiving groove 5 provided at the second connecting end;

[0067] The locking member 7 has one end rotatably disposed in the accommodating groove 5 , and the other end of the locking member 7 is adapted to cooperate with a portion of the second side surface of the adjusting belt 201 relatively close to the second connecting end, so as to expand the fastening space by controlling the locking member 7 .

[0068] Specifically, if Figure 2 and Figure 3 As shown, the wrench body 1 also includes a receiving groove 5 provided at the second connecting end. The shape of the receiving groove 5 is adapted to the shape of the second connecting end. The curvature of the receiving groove 5 along the central axis of the fastening space is adapted to the curvature of the second connecting end. One end of the locking member 7 is rotatably provided in the receiving groove 5, and the other end of the locking member 7 can be used in conjunction with the part of the second side surface of the adjusting belt 201 relatively close to the second connecting end. By controlling the locking member 7, the size of the fastening space can be controlled.

[0069] like Figure 2 and Figure 3 As shown, the wrench body 1 of the present invention incorporates a carefully designed receiving slot 5, located at the second connecting end. Its shape matches the contour of the second connecting end, ensuring a stable fit of the locking member 7 within it. The curvature of the receiving slot 5 along the central axis of the fastening space aligns with the curvature of the second connecting end. This design ensures smooth movement and accurate positioning of the locking member 7 during operation. One end of the locking member 7 is rotatably mounted within the receiving slot 5, while the other end engages the second side surface of the adjustment band 201, the side facing away from the inner side of the fastening space and relatively close to the second connecting end. This engagement mechanism allows the locking member 7 to effectively control the position of the adjustment band 201, thereby controlling the size of the fastening space. In actual operation, after the wrench is clamped to the fastener, the user can operate the locking member 7 to lock it with a specific portion of the adjustment band 201, thereby fixing the size of the fastening space and ensuring that the wrench remains stable and prevents slippage when tightening fasteners such as filters. On the contrary, when the fastener needs to be released, it is only necessary to unlock the locking member 7, and the adjusting belt 201 can be loosened under the action of the tensioning member 4, thereby releasing the fastening space.

[0070] The coordinated design of the locking member 7 and the adjustment band 201 effectively locks the size of the fastening space, ensuring stable contact between the wrench and the fastener when tightening high-strength or slippery fasteners, preventing slippage and improving operational safety and efficiency. The curved design of the receiving slot 5 and the rotatable nature of the locking member 7 allow the user to precisely control the position of the adjustment band 201, thereby accurately adjusting the size of the fastening space. This adapts to fasteners of various sizes and shapes, enhancing the versatility of the tool. The control process of the locking member 7 is simple and intuitive, allowing the user to lock and release the fastening space with a single operation, simplifying the operation process and reducing operational difficulty. The precise matching of the locking member 7 with the receiving slot 5 and its rotatable design reduce wear between components, extending the tool's service life and lowering long-term maintenance costs. This design enables the wrench to meet the maintenance needs of diverse applications, such as diesel engines, mining trucks, and heavy machinery. Its efficient and stable performance is particularly prominent in high-frequency operations such as filter replacement.

[0071] To sum up, by introducing the matching mechanism of the accommodating groove 5 and the locking member 7 in the wrench body 1, the utility model not only improves the stability and accuracy of the wrench in the tightening operation, but also greatly broadens its scope of application. It is an innovative technical solution for improving the maintenance efficiency and safety of heavy machinery and equipment.

[0072] Furthermore, the locking member 7 includes: a locking portion 501, the locking portion 501 is arc-shaped, and a clamping portion 502 is provided at one end of the locking portion 501 relatively close to the first connecting end;

[0073] A step portion 503 is provided on a side of the second side surface relatively close to the second connecting end and is engaged with the engaging portion 502;

[0074] The elastic member 504 is arranged in the accommodating groove 5, one end of the elastic member 504 is connected to the rotating part 3, and the other end is connected to the inner wall of the locking part 501. Through the cooperation of the locking member 7 and the elastic member 504, the fastening space is expanded or reduced.

[0075] Specifically, if Figure 3As shown, the locking member 7 includes a locking portion 501 with an arc-shaped design, and the curvature of the locking member 7 is adapted to the curvature of the second connecting end. A clamping portion 502 is provided on one end of the locking member 7, and the clamping portion 502 is arranged toward the second side surface. A step portion 503 is provided on the second side surface, and the step portion 503 has a set inclination angle, which is set at an acute angle, and the opening of the acute angle is facing the first connecting end. The step surface on the step portion 503 is adapted to the shape of the clamping portion 502, and an elastic member 504 is further provided in the accommodating groove 5. The elastic member 504 can be a spring in this embodiment, one end of the spring is connected to the rotating component 3, and the other end of the spring is connected to the inner side wall of the locking portion 501. During use, when the locking member 7 is pressed, the clamping portion 502 is separated from the step portion 503, and the elastic member 504 is in an elongated state. Because the adjustment belt 2 01 and the locking part 7 have no mutual restriction relationship, so the end of the adjusting belt 201 connected to the tensioning part 4 will move in the direction away from the second connection end, thereby driving the tensioning part 4 to stretch relatively, and the rotating part 3 will rotate in the opposite direction, so that the fastening space becomes larger. When the fastening space needs to be reduced, the rotating part 3 is rotated forward, and the tensioning part 4 is driven by the rotating part 3. It will gradually wrap around the rotating part 3, thereby driving the adjusting belt 201 to gradually enter the receiving groove 5. Because the step portion 503 on the adjusting belt 201 is used in conjunction with the clamping portion 502 on the locking portion 501, when the adjusting belt 201 moves in the direction of the receiving groove 5, the clamping portion 502 will continue to clamp with the next step surface, thereby preventing the adjusting belt 201 from suddenly moving in the direction away from the receiving groove 5, thereby reducing the fastening space.

[0076] like Figure 3 As shown, the locking member 7 of the present invention adopts an arc-shaped design, whose curvature matches the curvature of the second connecting end of the wrench body 1, ensuring the stability of the locking member within the receiving slot 5 and smooth operation. A locking portion 501 is provided at one end with a clamping portion 502, which faces the second side surface of the adjustment strap 201. A step portion 503 is provided on the second side surface. The step portion 503 is inclined at an acute angle and its opening is directed toward the first connecting end.

[0077] The stepped surface of the step portion 503 matches the shape of the engaging portion 502 of the locking portion 501, forming an effective engaging mechanism. An elastic member 504 is also provided within the receiving groove 5. In this embodiment, a spring is employed, one end of which is connected to the rotating component 3 and the other end to the inner sidewall of the locking portion 501. The elastic force of the spring ensures that the locking member 7 forms a stable engaging connection with the adjusting strap 201 in its natural state, maintaining the locking of the fastening space.

[0078] When the fastening space needs to be expanded, the user presses the locking piece 7 to separate the clamping portion 502 from the step portion 503. At this time, the elastic piece 504 (such as a spring) is in an elongated state, unlocking the restriction between the adjusting belt 201 and the locking piece 7. Under the action of the tensioning part 4, the adjusting belt 201 moves in the direction away from the second connection end, driving the tensioning part 4 to stretch relatively, causing the rotating part 3 to rotate in the opposite direction, and finally achieving the expansion of the fastening space.

[0079] Conversely, when the tightening space needs to be reduced, the user rotates the rotating member 3 in the forward direction, and the tensioning member 4 begins to gradually wind under the drive of the rotating member 3. This process causes the adjustment belt 201 to gradually enter the receiving groove 5. Because the step portion 503 on the adjustment belt cooperates with the engaging portion 502 on the locking portion 501, when the adjustment belt 201 moves toward the receiving groove 5, the engaging portion 502 automatically engages with the next step surface. This engaging is gradual, effectively preventing the adjustment belt 201 from suddenly moving in the opposite direction, and ensuring a smooth and controllable process of reducing the tightening space.

[0080] Through the coordination of the clamping portion 502 and the stepped portion 503, and the assistance of the elastic member 504, the present invention achieves smooth and precise adjustment of the fastening space. Whether expanding or reducing, the operation process is smooth and controllable, improving the tool's adaptability to fasteners of different sizes. The user can adjust the fastening space with a simple press, reducing the time and complexity of manual adjustment and improving work efficiency. The coordination mechanism of the clamping portion and the stepped portion effectively avoids instability caused by sudden reverse movement of the adjustment belt during operation, ensuring the safety of the operation process and reducing the risk of damage to fasteners or engine components during maintenance. The curved design of the locking member 7, in combination with the elastic member 504, makes the wrench operation more intuitive and convenient, allowing for easy assembly and disassembly of fasteners even in confined spaces or complex operating environments. This innovative design reduces the need for multiple wrenches of varying specifications, lowering maintenance costs, while also reducing the weight and volume of the tool, improving on-site work efficiency and ease of operation for maintenance personnel. Through the ingenious design of the locking member 7 and the elastic member 504, the utility model achieves a perfect combination of automatic adjustment and manual control, which not only improves the convenience and efficiency of operation, but also ensures flexibility and accuracy when disassembling and assembling special fasteners.

[0081] In summary, the wrench design of the present invention achieves efficient, precise and safe adjustment of the fastening space through the innovative matching mechanism of the locking member 7 and the adjustment belt 201, as well as the auxiliary adjustment of the elastic member 504. It is an important innovation for improving the maintenance efficiency of diesel engines and other heavy machinery and equipment.

[0082] Furthermore, an escape portion 6 is provided at one end of the accommodating groove 5 close to the second connection end, so as to form an escape space for the movement of the locking member 7 when the locking member 7 cooperates with the elastic member 504 .

[0083] Specifically, an avoidance portion 6 is provided at one end of the accommodating groove 5 close to the second connecting end, and at least a portion of the avoidance portion 6 is connected to the accommodating groove 5. When operating the locking member 7, hard contact between one end of the locking member 7 and the outer wall of the second connecting end can be avoided, thereby preventing the problem of being unable to adjust.

[0084] In the wrench design of the present invention, a special escape portion 6 is designed at one end of the accommodating groove 5 near the second connecting end. The escape portion is connected to the accommodating groove 5 to form an additional space. The purpose of this design is to prevent hard contact between one end of the locking member 7 and the outer wall of the second connecting end when operating the locking member 7, thereby avoiding adjustment difficulties or component damage caused by this. When the locking member 7 is pressed to adjust its matching state with the adjustment belt 201, the escape portion 6 provides the necessary space for the movement of the locking member 7, avoiding direct collision between the locking member 7 and the second connecting end. In particular, when the movement path of the locking member 7 may intersect with the outer wall of the second connecting end at a specific angle, the provision of the escape portion 6 ensures that the locking member 7 can move smoothly without being hindered by the outer wall of the second connecting end. In actual use, this design is crucial. For example, when expanding the fastening space, the locking member 7 needs to be disengaged from the clamping state with the adjustment belt 201. At this time, the avoidance portion 6 provides sufficient space for the locking member 7 so that it can move smoothly, avoiding hard contact with the outer wall of the second connecting end, and ensuring the normal operation of the adjustment mechanism.

[0085] The introduction of the avoidance portion 6 ensures the free movement of the locking member 7 during operation, avoids direct hard contact with the outer wall of the second connection end, reduces wear between components, and extends the service life of the wrench. The spatial design of the avoidance portion 6 makes the operation of the locking member 7 smoother, and the adjustment will not be hindered by accidental contact between components, thereby improving the reliability and operational efficiency of the tool. By avoiding hard contact, this design reduces the risk of component damage that may occur during the adjustment process, and ensures the stability and safety of the wrench under frequent use. The design of the avoidance portion 6 reduces the complex interactions between the adjustment components 2, making the maintenance and cleaning of the wrench easier, and reducing the complexity and cost of long-term maintenance. This innovative design not only improves the flexibility of the wrench during operation, but also enhances its adaptability in the disassembly and assembly of fasteners of different sizes and shapes, allowing the tool to play an efficient role in more types of repair and maintenance tasks.

[0086] In short, by arranging the avoidance portion 6 at a specific position of the accommodating groove 5, the utility model not only improves the operational smoothness of the locking member 7 and the service life of the wrench, but also further enhances the flexibility and safety of the wrench in complex maintenance tasks. It is another key design innovation for improving the maintenance efficiency of diesel engines, mining trucks and other heavy machinery and equipment.

[0087] Furthermore, the adjusting component 2 further includes: a chuck 8 , one end of the chuck 8 is rotatably connected to the first connecting end via a pin 9 , and the other end of the chuck 8 is connected to the adjusting belt 201 .

[0088] Specifically, the adjusting component 2 also includes a chuck 8 connected to the first connecting end through a pin 9. The chuck 8 has an arc-shaped design, and the other end of the chuck 8 is connected to the adjusting belt 201. During the extension and shortening of the adjusting belt 201, the chuck 8 can be used in conjunction with it. Because the chuck 8 and the first connecting end are rotatably connected, damage to the wrench is avoided during the shortening and extension of the adjusting belt 201, and further failure to adjust the size of the fastening space is avoided.

[0089] The adjustment component 2 of the present invention further includes a clamp 8 connected to the first connecting end via a pin 9. The clamp 8 also features a curved design to better accommodate cylindrical fasteners such as filters. The other end of the clamp 8 is connected to the adjustment strap 201. This connection ensures that the clamp 8 and the adjustment strap 201 can work together to exert force on the fastener during the extension and contraction of the adjustment strap 201.

[0090] The pin 9 allows for a rotatable connection between the chuck 8 and the first connection end. The importance of this design lies in the fact that, whether the adjustment strap 201 is extended by the tensioning member 4 or shortened by the locking member 7, the chuck 8 can freely rotate with the movement of the adjustment strap 201, adapting to the dynamic changes of the adjustment strap 201 and avoiding deformation or damage to the wrench structure that may be caused by a static connection.

[0091] In actual use, when the rotating component 3 or the tensioning component 4 causes the adjustment strap 201 to extend, the chuck 8 can rotate freely according to the direction and angle of the adjustment strap's movement, ensuring close contact between the chuck 8 and the filter surface and improving the stability of the fastener assembly and disassembly. Similarly, when the adjustment strap 201 needs to be shortened, the chuck 8 rotates with the permission of the pin 9, effectively preventing the impact of the sudden shortening of the adjustment strap 201 on the wrench body 1, ensuring the overall structural safety of the wrench and preventing failure in adjusting the tightening space.

[0092] Through the rotatable connection between the pin 9 and the chuck 8, the utility model greatly improves the structural safety of the wrench when adjusting the size of the fastening space, and avoids damage to the wrench caused by the sudden expansion and contraction of the adjustment band. The arc-shaped design and rotatable characteristics of the chuck 8 enable it to maintain stable contact with the fastener during the expansion and contraction of the adjustment band 201, ensuring the smooth disassembly and assembly of the fastener even in a complex working environment. During the dynamic adjustment of the adjustment band 201, the chuck 8 can adapt flexibly, reducing the risk of failure in fastening space adjustment due to improper fit between components, and improving the reliability and service life of the tool. This innovative design reduces the probability of damage to the wrench during the disassembly and assembly of the fastener, reduces the frequency of repair or replacement of components, and thus significantly reduces maintenance costs in long-term use. The connection method of the pin 9 simplifies the operating process when the adjustment band is expanded and contracted. The user does not need to adjust the chuck angle additionally to complete the efficient disassembly and assembly of the fastener, thereby improving the convenience and efficiency of on-site maintenance work.

[0093] By introducing a rotatable connection between the arc-shaped collet 8 and the pin 9 in the adjusting component 2, the utility model not only improves the operational stability and structural safety of the wrench during the disassembly and assembly of fasteners, but also further optimizes the adjustment mechanism of the fastening space size. It is another important innovative design for improving the maintenance efficiency of diesel engines, mining trucks and other heavy machinery and equipment.

[0094] Furthermore, the wrench body 1 comprises:

[0095] Handle 101;

[0096] A first transition section 102, which is arc-shaped and has a first connecting end;

[0097] A second transition section 103, which is arc-shaped and has a second connecting end;

[0098] The first transition section 102 , the second transition section 103 and the handle 101 are detachably connected, or the first transition section 102 , the second transition section 103 and the handle 101 are integrally formed.

[0099] Specifically, the wrench body 1 of the present invention comprises a handle 101, a first transition section 102, and a second transition section 103. Both the first and second transition sections 102, 103 are arc-shaped, having a first and a second connection end, respectively. The first and second transition sections 102, 103 can be detachably connected to the handle 101 or integrally formed with the handle.

[0100] In the detachable connection embodiment, the first and second transition sections 102, 103, and handle 101 are connected via threaded or snap-fit ​​connections, enabling quick assembly and disassembly. This design allows users to choose transition sections of varying lengths or curvatures based on different work scenarios or filter sizes, accommodating diverse maintenance needs. To replace a transition section, the user simply loosens the connection, easily removing the existing section and reinstalling the new one, significantly enhancing the tool's versatility and flexibility.

[0101] In the integrally molded embodiment, the first transition section 102, the second transition section 103, and the handle 101 are formed simultaneously through a process such as injection molding or casting, ensuring the overall structural strength and durability of the wrench. This design not only ensures the robustness and stability of the wrench body 1, but also simplifies the tool structure and reduces production costs, making it suitable for fixed work environments where frequent transition section replacement is not required.

[0102] The detachable connection design enables the wrench to adapt to filters of different sizes and shapes, improving the versatility and adaptability of the tool, reducing the need for maintenance personnel to carry multiple special tools, and improving work efficiency.

[0103] The ability to quickly replace transition sections allows users to quickly adjust tools when faced with complex maintenance environments or fasteners of different specifications, improving operational flexibility and convenience.

[0104] The one-piece design ensures the structural strength of the wrench body, reduces wear caused by relative movement between components, extends the service life of the tool, and reduces long-term maintenance costs.

[0105] Whether it is a detachable connection or one-piece molding, the arc-shaped transition section design can ensure a close fit between the chuck and the filter surface, improve the accuracy of fastener disassembly and assembly, and reduce the risk of injury caused by improper operation.

[0106] The one-piece production method simplifies the tool structure and reduces production costs, making it the preferred solution for mass production and long-term cost control. The detachable connection design provides flexibility in maintenance costs, allowing low-cost replacement of worn parts rather than the entire tool.

[0107] Through the above design, the utility model not only improves the operating efficiency and accuracy of the wrench in the maintenance of diesel engines, mining trucks and other heavy machinery and equipment, but also significantly enhances the versatility, flexibility and cost-effectiveness of the tool. It is an important technological innovation in the field of maintenance tools.

[0108] Furthermore, the wrench also includes:

[0109] a tensioning channel 11, wherein the tensioning member 4 is located in the tensioning channel 11, and one end of the tensioning member 4 can be wound around the rotating member 3, and / or;

[0110] The tensioning component 4 is a tensioning rope, or the tensioning component 4 is a tensioning spring.

[0111] Specifically, the tensioning component 4 is housed in a tensioning channel 11 within the wrench body 1. This design aims to protect the tensioning component 4 from damage by the external environment while ensuring smooth movement of the tensioning component 4 during operation. One end of the tensioning component 4 can be wound around the rotating component 3. The rotation of the rotating component 3 controls the extension and retraction of the tensioning component, thereby tightening or releasing fasteners such as filters. In practice, the tensioning channel 11 can be a groove machined directly into the wrench body 1, or installed inside the wrench via an additional component such as a pipe or sleeve to form a closed channel. This channel design ensures that the tensioning component 4 does not interfere with other components within the wrench during extension and retraction, thereby improving the service life of the tensioning component 4 and the overall reliability of the tool. The tensioning component 4 can be implemented in a variety of ways, two typical options being a tensioning rope and a tensioning spring. A tensioning rope is a flexible material, such as nylon rope or wire rope, and is suitable for assembly and disassembly of fasteners requiring a longer tensioning distance or a stronger tensioning force. One end of the rope is wound around the rotating component 3 and is tightened or loosened as the rotating component 3 rotates.

[0112] The tension spring is a component that uses spring force to tighten a fastener, and is suitable for scenarios where quick tightening and release are required within a small space. One end of the spring is also fixed to the rotating component 3, and the other end is connected to the adjustment belt 201 or other fastener contact surface. The tightening space is adjusted by compressing and releasing the spring.

[0113] The design of the tensioning channel 11 prevents the tensioning component 4 from being directly exposed to the outside, reduces wear and the impact of external factors such as dust and oil on the tensioning component 4, and improves the durability and maintenance cycle of the tool.

[0114] The tensioning component 4 in the tensioning channel can be extended and wound more smoothly without affecting the smoothness of the operation due to friction with other internal components, thereby ensuring the stability and efficiency of the tightening operation.

[0115] The choice of tensioning component 4 (tensioning rope or tensioning spring) enables the tool to adapt to the disassembly and assembly of different types of fasteners. Whether it is heavy fasteners requiring greater force or delicate operations in a small space, both can be achieved by selecting a suitable tensioning component 4.

[0116] The use of tensioning ropes or tensioning springs can provide more precise tensioning force control, avoiding damage to fasteners or ineffective tightening due to excessive or insufficient force, thereby improving the accuracy and safety of the tightening operation.

[0117] The selection and protection mechanism of the tensioning component 4 not only ensures the performance of the tool, but also takes cost control into consideration. For example, the low cost of the tensioning rope and the high efficiency of the tensioning spring enable the tool to meet complex work requirements while also having good economy.

[0118] Furthermore, the rotation hole 12 is provided on the second connection end;

[0119] The rotating component 3 includes a rotating shaft 301 rotatably arranged in the rotating hole 12, and the rotating shaft 301 is movably connected to the adjusting component 2. The rotating component 3 also includes a knob 302 arranged at one end of the rotating shaft 301, so that the fastening space can be expanded or reduced by rotating the knob 302.

[0120] Specifically, the design of the rotating component 3 of the present invention centers around a rotating shaft 301 rotatably mounted within the rotating hole 12 of the wrench body 1. One end of the rotating shaft 301 is connected to the adjusting component 2 via a flexible connection, ensuring that when the rotating shaft 301 rotates, it can drive the adjusting component 2 to perform corresponding telescopic movement, thereby adjusting the size of the tightening space. At the other end of the rotating shaft 301 is a knob 302, which the user can rotate to control the rotation direction and angle of the rotating shaft 301, thereby achieving precise adjustment of the tightening space.

[0121] The design of knob 302 not only provides an intuitive user interface but also optimizes the operator's grip. The outer contour of knob 302 can be designed with a non-slip surface, such as a crosshatch pattern or a rubberized surface, to increase friction during operation and reduce hand slippage. Furthermore, the size and shape of knob 302 should be designed with ergonomic considerations in mind, ensuring easy rotation even when wearing gloves, enhancing ease and comfort.

[0122] The movable connection between the rotating shaft 301 and the adjusting component 2 can be achieved through a variety of means, including but not limited to pins, gear racks, and helical threads. In this embodiment, the connection method selected should ensure that the adjusting component 2 can smoothly extend and retract as the rotating shaft 301 rotates without causing any jamming or excessive operational resistance. Furthermore, the connection should possess sufficient strength and wear resistance to accommodate long-term rotational motion.

[0123] The introduction of the knob 302 simplifies the operational process of adjusting the fastening space. The user only needs to rotate the knob 302 to achieve precise control of the fastening space without the need for additional tools, thereby improving the convenience and efficiency of the operation.

[0124] The movable connection between the rotating shaft 301 and the adjusting component 2 ensures the smoothness and precision of the fastening space adjustment. The user can easily expand or reduce the fastening space as needed, avoiding damage to the fastener or difficulty in disassembly due to inaccurate adjustment.

[0125] The shape and anti-slip design of the knob 302 follow ergonomic principles, improving the operator's grip comfort and operating feel, and can maintain good operating stability and reliability even in harsh working environments such as oil, moisture, etc.

[0126] The stable and wear-resistant movable connection between the rotating shaft 301 and the adjusting component 2 ensures structural safety and operational efficiency under long-term use, and reduces poor operation or component failure due to wear.

[0127] The simple design and operating mechanism reduce production and maintenance costs. The structure of the knob and the rotating shaft 301 makes tool maintenance simpler, the cost of replacing worn parts is low, and the economy and service life of the tool are improved.

[0128] Through the above-mentioned innovative design, the wrench of the present invention not only provides an efficient and convenient solution in the maintenance of diesel engines, mining trucks and other heavy machinery and equipment, but also significantly improves the accuracy of tightening space adjustment and the comfort of operation through the ingenious combination of the knob and the rotating shaft. It is an important technological advancement in the field of maintenance tools.

[0129] Through the above design, the utility model not only improves the operating efficiency and tightening accuracy in the maintenance of heavy machinery and equipment such as diesel engines and mining trucks, but also significantly enhances the durability and adaptability of the tool through the protection and flexible selection of tensioning components. It is another innovative technical solution in the field of maintenance tools.

[0130] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0131] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0132] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0133] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0134] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0135] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A wrench, characterized in that: include: A wrench body (1), the wrench body (1) having a first connecting end and a second connecting end; an adjusting component (2), one end of the adjusting component (2) being rotatably connected to the first connecting end, and an end of the adjusting component (2) away from the first connecting end being adjustably connected to the second connecting end via a rotating component (3); The first connecting end, the second connecting end and the adjusting component (2) together form a fastening space for fastening a component to be fastened, so that the fastening space can be expanded or reduced by rotating the rotating component (3).

2. The wrench according to claim 1, characterized in that The regulating component (2) comprises: An adjusting belt (201) has a first side surface, and the first side surface is provided with a plurality of protrusions (202) distributed along its extension direction.

3. The wrench according to claim 2, characterized in that The regulating component (2) further comprises: A tensioning component (4), one end of which is arranged on the rotating component (3), and the other end of which is connected to the adjusting belt (201), so that when the rotating component (3) rotates, the end of the adjusting belt (201) close to the second connection end moves in a direction close to the rotating component (3).

4. The wrench according to claim 2, characterized in that The wrench body (1) further includes a receiving groove (5) provided at the second connecting end; A locking member (7), one end of which is rotatably disposed in the accommodating groove (5), and the other end of which is adapted to cooperate with a portion of the second side surface of the adjusting belt (201) relatively close to the second connecting end, so as to expand the fastening space by controlling the locking member (7).

5. The wrench according to claim 4, characterized in that The locking member (7) comprises: A locking portion (501), the locking portion (501) is arc-shaped, and an end of the locking portion (501) relatively close to the first connecting end is provided with a clamping portion (502); A step portion (503) is provided on a side of the second side surface relatively close to the second connecting end, the step portion (503) being engaged with the engaging portion (502); An elastic member (504) is provided in the accommodating groove (5), one end of the elastic member (504) is connected to the rotating member (3), and the other end is connected to the inner side wall of the locking portion (501), and the fastening space is expanded or reduced through the cooperation between the locking member (7) and the elastic member (504).

6. The wrench according to claim 5, characterized in that An escape portion (6) is provided at one end of the accommodating groove (5) close to the second connecting end, so as to form an escape space for the movement of the locking member (7) when the locking member (7) cooperates with the elastic member (504).

7. The wrench according to claim 2, characterized in that The regulating component (2) further comprises: A chuck (8), one end of the chuck (8) is rotatably connected to the first connecting end via a pin (9), and the other end of the chuck (8) is connected to the adjusting belt (201).

8. The wrench according to claim 1, wherein: The wrench body (1) comprises: handle (101); A first transition section (102), the first transition section (102) is arc-shaped, and the first transition section (102) has the first connecting end; A second transition section (103), the second transition section (103) is arc-shaped, and the second transition section (103) has the second connecting end; The first transition section (102), the second transition section (103) and the handle (101) are detachably connected, or the first transition section (102), the second transition section (103) and the handle (101) are integrally formed.

9. The wrench according to claim 3, characterized in that The wrench also includes: a tensioning channel (11), wherein the tensioning component (4) is located in the tensioning channel (11), and one end of the tensioning component (4) can be wound around the rotating component (3), and / or; The tensioning component (4) is a tensioning rope, or the tensioning component (4) is a tensioning spring.

10. The wrench according to claim 1, wherein The wrench also includes: A rotating hole (12), the rotating hole (12) being provided on the second connecting end; The rotating component (3) includes a rotating shaft (301) rotatably arranged in the rotating hole (12), and the rotating shaft (301) is movably connected to the adjusting component (2). The rotating component (3) also includes a knob (302) arranged at one end of the rotating shaft (301), so that the fastening space can be expanded or reduced by rotating the knob (302).

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