Large-force adjustable wrench

Abstract

The utility model relates to the technical field of manual hardware tools, in particular to a powerful adjustable wrench which comprises a wrench body, an adjustable movable nozzle is assembled on the lower side of the wrench body, a rotatable turbine is embedded in the wrench body and connected with the bottom of the movable nozzle in a meshed mode, and a pull rod is vertically arranged in the wrench body in a penetrating mode. A connecting block with a through hole is fixedly arranged at the upper end of the pull rod, a movable handle is clamped on the upper side of the handle, the left end of the movable handle is movably connected with the connecting block through two sets of connecting plates, a through guide rail sliding groove is formed in the handle, and a fixing shaft is assembled in the guide rail sliding groove. Front and rear ends of the fixed shaft are fixedly connected with the movable handle. The locking force is increased through the special structural design, the movable nozzle and the turbine can be locked, enough clamping force is guaranteed, the slipping phenomenon is effectively avoided, a user is allowed to adjust the locking force according to needs, and operation safety and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manual hardware tools, and particularly relates to a heavy-duty adjustable wrench. Background Technique

[0002] An adjustable wrench, also known as a monkey wrench, has an adjustable opening width and is a tool used to tighten and loosen nuts and bolts of different specifications. The adjustable wrench is a commonly used tool for maintenance workers. Because its opening can be adjusted within a certain range, it is very convenient to use. It can be used not only for standard metric bolts and imperial bolts, but also for some self-made non-standard bolts.

[0003] Currently, the adjustable wrenches on the market usually include components such as a wrench body, a movable jaw, a worm gear, and a pin shaft. However, when tightening nuts with such ordinary adjustable wrenches, the movable jaw is mainly driven by the worm gear to cooperate with the wrench body opening surface to clamp the nut. During use, the worm gear is prone to loosening, resulting in an increase in the distance between the movable jaw and the wrench body opening surface, and a gap is generated between the movable jaw and the wrench body opening surface and the nut, resulting in insufficient clamping force and easy slipping, affecting work efficiency and posing a safety hazard. Users often dare not operate with great force. Therefore, it is particularly important to develop a heavy-duty adjustable wrench with a reliable locking of the wrench opening and adjustable locking force. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a heavy-duty adjustable wrench, aiming to overcome the deficiencies of the prior art, improve the locking force through structural design, ensure sufficient clamping force, effectively avoid slipping, and allow users to adjust the locking force according to needs, improving the safety and stability of operation.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] A heavy-duty adjustable wrench includes a wrench body and a handle. The left end of the handle is provided with an integrated wrench body. An adjustable movable jaw is assembled on the lower side of the wrench body. A rotatable worm gear is embedded inside the connection between the wrench body and the handle, and the worm gear is meshed with the bottom of the movable jaw. A pull rod is vertically penetrated through the wrench body, and the pull rod penetrates through the worm gear and is fixedly connected thereto. A connection block with a through hole is fixedly provided at the upper end of the pull rod. A movable handle is clamped on the upper side of the handle. The left end of the movable handle is movably connected to the connection block through two connecting plates. A through guide rail chute is opened inside the handle, and a fixed shaft is assembled inside the guide rail chute, and the front and rear ends of the fixed shaft are fixedly connected to the movable handle.

[0007] Further, an adjusting nut is assembled at the lower end of the pull rod. The adjusting nut is screwed with the pull rod through a thread, and anti-slip lines are engraved on the surface of the adjusting nut.

[0008] Further, a positioning groove is provided on the right side of the head of the wrench body, and the left end of the connecting wrench is snapped into the positioning groove.

[0009] Further, the left and right ends of the connecting wrench are respectively hinged to the connecting block and the movable handle through pin shafts.

[0010] Further, the cross-section of the movable handle is a U-shaped structure, and the movable handle can be sleeved on the upper side of the handle and be in close contact therewith.

[0011] Further, a layer of rubber pad is attached to the surface of the movable handle.

[0012] Further, the movable handle, the connecting wrench, the fixed shaft, the connecting block and the pull rod are all made of stainless steel by processing.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Through a special structural design, the utility model improves the locking force, can lock the movable nozzle and the worm wheel, ensures sufficient clamping force, effectively avoids the slipping phenomenon, improves the working efficiency, and allows the user to adjust the locking force according to needs, improving the safety and stability of the operation.

[0015] 2. The structure of the utility model is simple, easy to manufacture and maintain, with low processing difficulty, effectively reducing the production cost.

[0016] 3. An adjusting nut is assembled at the lower end of the pull rod of the utility model. The adjusting nut is screwed and connected with the pull rod through threads. The user can change its position on the pull rod by rotating the adjusting nut, thereby facilitating the adjustment of the locking force and the adjustment range of the locking force. And the surface of the adjusting nut is engraved with anti-slip lines, which increases the friction between the hand of the user and the adjusting nut during use. Even when the hand is wet or greasy, the user can more stably hold the adjusting nut for rotation operation, reducing the possibility of slipping.

[0017] 4. A positioning groove is provided on the right side of the head of the wrench body, and the left end of the connecting wrench is snapped into the positioning groove. A stable connection mode is formed through the positioning groove and the connecting wrench, effectively preventing the connecting wrench from shifting or loosening during use. At the same time, the positioning groove provides an accurate positioning fulcrum for the connecting wrench, enabling the connecting wrench to maintain a fixed path and angle when moving or rotating, which helps to improve the operation accuracy of the wrench and enables the user to more accurately control the force and direction of the wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2This is the front view of the present utility model.

[0020] Figure 3 This is a schematic diagram of the state after the movable handle of the present utility model is unfolded.

[0021] Figure 4 This is a cross-sectional view of the present utility model.

[0022] Figure 5 This is a schematic diagram of the partial structure of the present utility model.

[0023] In the figure: 1, wrench body; 2, movable jaw; 3, connecting wrench; 4, movable handle; 5, handle; 6, worm gear; 7, pin shaft; 8, guide rail chute; 9, fixed shaft; 10, adjusting nut; 11, connecting block; 12, pull rod; 13, positioning groove. Specific embodiments

[0024] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment:

[0026] As Figures 1 to 5 shown, a powerful adjustable wrench includes a wrench body 1 and a handle 5. The wrench body 1 is integrally provided at the left end of the handle 5. The movable jaw 2 is assembled on the lower side of the wrench body 1. A rotatable worm gear 6 is embedded inside the connection between the wrench body 1 and the handle 5, and the worm gear 6 is meshed and connected to the bottom of the movable jaw 2. A pull rod 12 is vertically penetrated inside the wrench body 1, and the pull rod 12 penetrates through the worm gear 6 and is fixedly connected thereto. A connecting block 11 with a through hole is fixedly provided at the upper end of the pull rod 12. A movable handle 4 is clamped on the upper side of the handle 5. The left end of the movable handle 4 is movably connected to the connecting block 11 through two connecting wrenches 3. A through guide rail chute 8 is opened inside the handle 5. A fixed shaft 9 is assembled inside the guide rail chute 8, and the front and rear ends of the fixed shaft 9 are fixedly connected to the movable handle 4. This design solves the problem that in the existing adjustable wrench during use, the worm gear 6 is prone to looseness, resulting in an increase in the distance between the movable jaw 2 and the mouth surface of the wrench body 1, a gap is generated between the movable jaw 2 and the mouth surface of the wrench body 1 and the nut, resulting in insufficient clamping force, easy slipping phenomenon, affecting work efficiency and posing a safety hazard, and users often dare not operate with great force.

[0027] In this embodiment, an adjusting nut 10 is assembled at the lower end of the pull rod 12, and the adjusting nut 10 is screwed together with the pull rod 12 through a thread. The user can change its position on the pull rod 12 by rotating the adjusting nut 10, thereby facilitating the adjustment of the locking force and the range of the locking force. The surface of the adjusting nut 10 is engraved with anti-slip patterns, which increases the friction between the user's hand and the adjusting nut 10 when in use. Even when the hands are wet or greasy, the user can hold the adjusting nut 10 more stably for rotation, reducing the possibility of slipping.

[0028] In this embodiment, a positioning groove 13 is provided on the right side of the head of the wrench body 1, and the left end of the connecting plate 3 is inserted into the positioning groove 13. A stable connection is formed with the connecting plate 3 through the positioning groove 13, which effectively prevents the connecting plate 3 from shifting or loosening during use. At the same time, the positioning groove 13 provides a precise positioning fulcrum for the connecting plate 3, so that the connecting plate 3 can maintain a fixed path and angle when moving or rotating, which helps to improve the operating accuracy of the wrench and enables the user to more accurately control the strength and direction of the wrench.

[0029] In this embodiment, the left and right ends of the connecting plate 3 are respectively hinged to the connecting block 11 and the movable handle 4 through the pin shaft 7. This design allows the components to rotate relative to each other around the pin shaft 7 through the hinge, thereby facilitating the transmission of the force on the movable handle 4 to the pull rod 12 through the connecting plate 3, thereby driving the pull rod 12 to move and achieve locking of the movable mouth 2 and the worm gear 6.

[0030] In this embodiment, the cross-section of the movable handle 4 is a U-shaped structure, and the movable handle 4 can be clamped on the upper side of the handle 5 to fit in contact with it. The U-shaped cross-section design of the movable handle 4 enables it to fit tightly on the upper side of the handle 5, increasing the contact area when holding, thereby providing a more stable grip and improving the ease of operation. At the same time, it can reduce the space occupied by the movable handle 4 for easy carrying.

[0031] In this embodiment, a layer of rubber pad is attached to the surface of the movable handle 4. The rubber pad increases the friction between the user's hand and the movable handle 4, ensuring that the user can hold the handle stably and reduce the risk of slipping. At the same time, the design of the rubber pad improves the comfort of holding, allowing the user to get a better touch and experience when using the tool.

[0032] In this embodiment, the movable handle 4, the connecting plate 3, the fixed shaft 9, the connecting block 11 and the pull rod 12 are all made of stainless steel. Stainless steel has high strength and hardness, which makes the movable wrench less likely to deform or be damaged when subjected to a large torque or impact force. Stainless steel has excellent wear resistance, which can reduce the wear of the movable wrench caused by friction during use and improve its durability. In addition, stainless steel is easy to process, which reduces the manufacturing difficulty and production cost.

[0033] The working principle of this kind of heavy-duty adjustable wrench:

[0034] During actual use, when the user presses the movable handle 4, the fixed shaft 9 on the movable handle 4 moves to the left along the guide rail chute 8, driving the movable handle 4 to rotate and stick to the handle 5. At this time, the left end of the movable handle 4 transmits the torque to the connecting wrench 3. The left end of the connecting wrench 3 rotates with the positioning groove 13 as the fulcrum. Through the transmission of the connecting plate, the pull rod 12 is pulled to move upward. During this process, the pull rod 12 drives the worm wheel 6 to move upward synchronously, and further makes the movable jaw 2 move upward until the mouth surface of the movable jaw 2 and the mouth surface of the wrench body 1 tightly clamp the workpiece, and then the workpiece can be tightened with great force. Due to the setting of the adjusting nut 10, the user can change its position on the pull rod 12 by rotating the adjusting nut 10, thereby adjusting the magnitude of the locking force. The adjusting nut 10 is screwed onto the pull rod 12 through threads and can move up and down along the pull rod 12 when rotating, so as to change the locking degree of the pull rod 12, that is, adjust the magnitude of the locking force.

[0035] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, rather than limitations on the implementation modes of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is impossible to list all the implementation modes here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A powerful adjustable wrench, comprising a wrench body (1) and a handle (5), wherein the left end of the handle (5) is provided with an integrated wrench body (1), an adjustable movable mouth (2) is mounted on the lower side of the wrench body (1), a rotatable worm gear (6) is embedded inside the connection between the wrench body (1) and the handle (5), and the worm gear (6) is meshedly connected with the bottom of the movable mouth (2), characterized in that: A pull rod (12) is vertically penetrated inside the lever body (1), and the pull rod (12) penetrates the worm gear (6) and is fixedly connected thereto. A connecting block (11) with a through hole is fixedly provided at the upper end of the pull rod (12). A movable handle (4) is clamped on the upper side of the handle (5). The left end of the movable handle (4) is movably connected to the connecting block (11) through two sets of connecting levers (3). A guide rail slot (8) is penetrated inside the handle (5). A fixed shaft (9) is installed inside the guide rail slot (8), and the front and rear ends of the fixed shaft (9) are fixedly connected to the movable handle (4).

2. The high-power adjustable wrench according to claim 1, characterized in that: The lower end of the pull rod (12) is equipped with an adjusting nut (10), the adjusting nut (10) is screwed together with the pull rod (12) via a thread, and the surface of the adjusting nut (10) is engraved with anti-slip patterns.

3. The high-power adjustable wrench according to claim 1, characterized in that: A positioning groove (13) is provided on the right side of the head of the lever body (1), and the left end of the connecting lever (3) is inserted into the positioning groove (13).

4. The high-power adjustable wrench according to claim 1, characterized in that: The left and right ends of the connecting plate (3) are respectively hinged to the connecting block (11) and the movable handle (4) through a pin shaft (7).

5. The high-power adjustable wrench according to claim 1, characterized in that: The movable handle (4) has a U-shaped cross-section, and the movable handle (4) can be inserted onto the upper side of the handle (5) to fit in contact with it.

6. The high-power adjustable wrench according to claim 5, characterized in that: A layer of rubber pad is attached to the surface of the movable handle (4).

7. The high-power adjustable wrench according to claim 1, characterized in that: The movable handle (4), the connecting plate (3), the fixed shaft (9), the connecting block (11) and the pull rod (12) are all made of stainless steel.

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