Torque wrench and adjustable handle

Abstract

The utility model belongs to the field of torque wrench, specifically is a kind of torque wrench, including wrench body, the one end of wrench body is provided with handle, the one end of handle is fixedly connected with connecting piece, the one end of connecting piece is provided with butt joint, the one side of butt joint is equipped with installation slot, the inner wall of installation slot is rotatably connected with connecting shaft, the one end of connecting shaft is fixedly connected first threaded rod, the surface of first threaded rod is threadedly connected with the inner wall of threaded hole;The utility model handle and connecting piece integrated, form two components with butt joint, handle is inserted in the installation slot of butt joint by connecting piece, threaded hole is butt jointed with first threaded rod, first threaded rod can be rotated along the inner wall of installation slot by connecting shaft, on the one hand, wrench body can be replaced handle easily, on the other hand, the firmness of handle and butt joint connection is guaranteed by the characteristic of thread self-locking.

Description

Technical Field

[0001] This utility model relates to the field of torque wrenches, specifically a torque wrench and an adjustable grip. Background Technology

[0002] A torque wrench, also known as an adjustable torque wrench, is a type of wrench. Based on the power source, they can be divided into: electric torque wrenches, pneumatic torque wrenches, hydraulic torque wrenches, and manual torque wrenches. Manual torque wrenches can be further divided into: preset type, fixed value type, dial type, digital display type, slip type, bending type, and kilogram wrench. When the tightness of screws and bolts is critical, a torque wrench allows the operator to apply a specific torque value.

[0003] However, most traditional torque wrenches consist of two parts: a handle and a wrench head. The handle and wrench head are integrally molded, which makes them inconvenient to disassemble and replace. This forces maintenance personnel to carry multiple torque wrenches (each corresponding to a different wrench head size), increasing tool management costs and space usage. On the other hand, when the handle or wrench head is deformed or damaged, it cannot be replaced individually, and discarding the entire wrench would be a waste of the intact parts. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, most traditional torque wrenches consist of two parts: a handle and a wrench head. The handle and wrench head are integrally molded, which is inconvenient for disassembly and replacement. This results in maintenance personnel having to carry multiple torque wrenches, increasing tool management costs and space occupation. On the other hand, when the handle or wrench head is deformed or damaged, it cannot be replaced individually, and discarding the entire wrench wastes the intact parts. This utility model proposes a torque wrench with an adjustable grip.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a torque wrench, including a wrench body, a wrench head provided at one end of the wrench body, a connector fixedly connected to one end of the wrench head, a mating part provided at one end of the connector, an installation groove provided on one side of the mating part, a connecting shaft rotatably connected to the inner wall of the installation groove, a first threaded rod fixedly connected to one end of the connecting shaft, a threaded hole provided on one side of the connector, and the surface of the first threaded rod being threadedly connected to the inner wall of the threaded hole.

[0006] Preferably, a dial wheel is fixedly connected to the surface of the connecting shaft, and a clearance groove is provided on one side of the docking member. The inner wall of the clearance groove is in communication with the inner wall of the mounting groove, and the dial wheel is disposed between the mounting groove and the clearance groove.

[0007] Preferably, a mounting cylinder is fixedly connected to one side of the docking part, and an extension hole is provided at one end of the mounting cylinder. The inner wall of the extension hole is in communication with the inner wall of the mounting groove, and a fastening bolt is threaded to the inner wall of the extension hole. One end of the fastening bolt abuts against the surface of the dial wheel.

[0008] Preferably, a limiting groove is formed on one side of the connector, and a limiting block is fixedly connected to the inner wall of the mounting groove, with the surface of the limiting block slidably connected to the inner wall of the limiting groove.

[0009] Preferably, a mounting hole is provided on one side of the wrench head, and a bidirectional ratchet head is fixedly connected to the inner wall of the mounting hole, with a sleeve engaged on the surface of the bidirectional ratchet head.

[0010] Preferably, a trigger rod is fixedly connected to the other side of the docking member, a sleeve rod is fixedly sleeved on the surface of the trigger rod, an adjustment handle is movable on the surface of the sleeve rod, a second threaded rod is rotatably connected to the inner wall of the adjustment handle, an extension rod is threadedly connected to the surface of the second threaded rod, the surface of the extension rod is slidably connected to the inner wall of the adjustment handle, a limit plate is fixedly connected to the surface of the extension rod, and the surface of the limit plate is slidably connected to the inner wall of the adjustment handle.

[0011] Preferably, the inner cavity of the adjusting handle is rotatably connected to an adjusting rod, one end of the adjusting rod is fixedly connected to a first gear, and the surface of the second threaded rod is fixedly connected to a second gear, with the teeth of the first gear and the teeth of the second gear meshing with each other.

[0012] Preferably, a positioning ring is fixedly connected to the inner wall of the adjusting handle, and one side of the positioning ring abuts against one end of the extension rod.

[0013] The advantages of this utility model are:

[0014] This utility model integrates the wrench head and connector into a single piece, forming two separate components with the mating part. The wrench head is inserted into the mounting groove of the mating part via the connector. Simultaneously, the threaded hole of the connector mates with the first threaded rod via the mounting groove. The first threaded rod can rotate along the inner wall of the mounting groove via a connecting shaft. Since the surface of the first threaded rod is threadedly connected to the inner wall of the threaded hole, the rotation of the first threaded rod causes the connector and wrench head to descend until they are fully inserted into the mounting groove. This design facilitates wrench head replacement and ensures a secure connection between the wrench head and the mating part through the self-locking characteristic of the thread. It solves the problems of traditional torque wrenches, which consist of a handle and a wrench head that are integrally molded, making disassembly and replacement difficult. This results in maintenance personnel having to carry multiple torque wrenches, increasing tool management costs and space usage. Furthermore, when the handle or wrench head is deformed or damaged, it cannot be replaced individually, and discarding the entire wrench wastes the intact parts. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the wrench head structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the docking component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the docking component of this utility model;

[0020] Figure 5 This is a schematic diagram showing the disassembled bidirectional ratchet head and sleeve of this utility model;

[0021] Figure 6 This is a schematic diagram of the extension rod transmission of this utility model.

[0022] In the diagram: 1. Wrench body; 2. Wrench head; 3. Connector; 301. Threaded hole; 302. Limiting groove; 4. Connecting part; 401. Mounting groove; 402. Connecting shaft; 403. First threaded rod; 5. Dial wheel; 6. Clearance groove; 7. Mounting sleeve; 701. Extension hole; 8. Fastening bolt; 9. Limiting block; 10. Mounting hole; 11. Two-way ratchet head; 12. Sleeve; 13. Trigger rod; 14. Sleeve rod; 15. Adjusting handle; 16. Second threaded rod; 17. Extension rod; 18. Limiting plate; 19. Adjusting rod; 20. First gear; 21. Second gear; 22. Positioning ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0025] This application discloses a torque wrench and an adjustable handle. (See also...) Figures 1 to 4 A torque wrench includes a wrench body 1, a wrench head 2 at one end of the wrench body 1, a connector 3 fixedly connected to one end of the wrench head 2, a mating part 4 at one end of the connector 3, a mounting groove 401 on one side of the mating part 4, a connecting shaft 402 rotatably connected to the inner wall of the mounting groove 401, a first threaded rod 403 fixedly connected to one end of the connecting shaft 402, a threaded hole 301 on one side of the connector 3, and the surface of the first threaded rod 403 threadedly connected to the inner wall of the threaded hole 301. The wrench head 2 and the connector 3 are integrally formed, forming two parts with the mating part 4. The wrench head 2 is connected to the connector 4 via the connector. 3 is inserted into the mounting groove 401 of the docking part 4. While the connector 3 is inserted into the mounting groove 401, the threaded hole 301 is docked with the first threaded rod 403. The first threaded rod 403 can rotate along the inner wall of the mounting groove 401 through the connecting shaft 402. Since the surface of the first threaded rod 403 is threadedly connected to the inner wall of the threaded hole 301, the rotation of the first threaded rod 403 drives the connector 3 and the wrench head 2 to descend until they are fully inserted into the mounting groove 401. On the one hand, this makes it easy to replace the wrench head 2 with the wrench body 1. On the other hand, the self-locking characteristic of the thread ensures the firmness of the connection between the wrench head 2 and the docking part 4.

[0026] Reference Figure 3 and Figure 4 A dial wheel 5 is fixedly connected to the surface of the connecting shaft 402. A clearance groove 6 is provided on one side of the docking part 4. The inner wall of the clearance groove 6 is connected to the inner wall of the mounting groove 401. The dial wheel 5 is set between the mounting groove 401 and the clearance groove 6. Through the dial wheel 5, the dial wheel 5 is coaxially fixedly connected to the connecting shaft 402. The dial wheel 5 extends through the surface of the clearance groove 6 to the outside. Maintenance personnel can rotate the dial wheel 5 to drive the connecting shaft 402 and the first threaded rod 403 to rotate, further improving the convenience of replacing the wrench head 2.

[0027] Reference Figure 4 A mounting cylinder 7 is fixedly connected to one side of the docking part 4. An extension hole 701 is provided at one end of the mounting cylinder 7. The inner wall of the extension hole 701 is connected to the inner wall of the mounting groove 401. A fastening bolt 8 is threadedly connected to the inner wall of the extension hole 701. One end of the fastening bolt 8 abuts against the surface of the dial wheel 5. Through the fastening bolt 8, the fastening bolt 8 can be threadedly connected through the extension hole 701 of the mounting cylinder 7. Continuous rotation of the fastening bolt 8 can extend one end of the fastening bolt 8 into the mounting groove 401 and abut against the dial wheel 5, thereby fixing the position of the dial wheel 5 and minimizing the possibility of accidental rotation of the dial wheel 5, which would affect the stability of the wrench head 2.

[0028] Reference Figure 2 and Figure 4A limiting groove 302 is provided on one side of the connector 3. A limiting block 9 is fixedly connected to the inner wall of the mounting groove 401. The surface of the limiting block 9 is slidably connected to the inner wall of the limiting groove 302. With the setting of the limiting block 9, both the limiting block 9 and the limiting groove 302 are T-shaped. When the connector 3 is inserted into the mounting groove 401, the limiting groove 302 is slidably connected to the limiting block 9, which further improves the stability of the connection between the wrench head 2 and the docking part 4.

[0029] Reference Figure 1 and Figure 5 The wrench head 2 has a mounting hole 10 on one side. A double-ended ratchet head 11 is fixedly connected to the inner wall of the mounting hole 10. A sleeve 12 is engaged with the surface of the double-ended ratchet head 11. A trigger rod 13 is fixedly connected to the other side of the docking part 4. A sleeve rod 14 is fixedly fitted on the surface of the trigger rod 13. An adjustable handle 15 is movable on the surface of the sleeve rod 14. Through the double-ended ratchet head 11, the double-ended ratchet head 11 can dock with the sleeve 12. The other end of the sleeve 12 can be connected to the corresponding bolt. The adjustable handle 15 can adjust the spring (not shown in the figure) inside the sleeve rod 14 to increase the torque. The rotation direction of the wrench body 1 can be adjusted through the double-ended ratchet head 11, and the bolt is continuously tightened. When the torque is greater than the pressure of the spring inside the sleeve rod 14, a momentary disengagement effect occurs. The pawl (not shown in the figure) inside the sleeve rod 14 is displaced, causing the trigger rod 13 to swing and strike the sleeve rod 14.

[0030] Reference Figure 1 and Figure 6A second threaded rod 16 is rotatably connected to the inner wall of the adjusting handle 15. An extension rod 17 is threadedly connected to the surface of the second threaded rod 16. The surface of the extension rod 17 is slidably connected to the inner wall of the adjusting handle 15. A limit plate 18 is fixedly connected to the surface of the extension rod 17. The surface of the limit plate 18 is slidably connected to the inner wall of the adjusting handle 15. An adjusting rod 19 is rotatably connected to the inner cavity of the adjusting handle 15. A first gear 20 is fixedly connected to one end of the adjusting rod 19. A second gear 21 is fixedly connected to the surface of the second threaded rod 16. The teeth of the first gear 20 and the teeth of the second gear 21 mesh with each other. A positioning ring 22 is fixedly connected to the inner wall of the adjusting handle 15. One side of the positioning ring 22 abuts against one end of the extension rod 17. Through the adjusted rod 19, the adjusting rod 19... 9 can drive the first gear 20 to rotate. Since the teeth of the first gear 20 and the teeth of the second gear 21 mesh with each other, the rotation of the first gear 20 drives the rotation of the second gear 21. The second gear 21 is coaxially and fixedly connected to the second threaded rod 16. The rotation of the second gear 21 drives the rotation of the second threaded rod 16. The surface of the second threaded rod 16 is threadedly connected to the extension rod 17. The extension rod 17 is limited by the limiting plate 18. Therefore, the rotation of the second threaded rod 16 drives the extension rod 17 to extend, so as to increase the length of the sleeve rod 14 and increase the torque by using the lever principle. The rotation adjustment rod 19 makes the extension rod 17 return to its original position. The position of the extension rod 17 is limited by the positioning ring 22 to avoid the extension rod 17 from contacting the first gear 20 as much as possible.

[0031] Working principle: The wrench head 2 is inserted into the mounting groove 401 of the mating part 4 via the connector 3. Simultaneously, the threaded hole 301 mates with the first threaded rod 403. The first threaded rod 403 can rotate along the inner wall of the mounting groove 401 via the connecting shaft 402. Since the surface of the first threaded rod 403 is threadedly connected to the inner wall of the threaded hole 301, the rotation of the first threaded rod 403 causes the connector 3 and the wrench head 2 to descend until they are fully inserted into the mounting groove 401. This facilitates the replacement of the wrench head 2 with the wrench body 1, and also utilizes the self-locking feature of the threads. To ensure the secure connection between the wrench head 2 and the mating part 4, the dial wheel 5 is coaxially and fixedly connected to the connecting shaft 402. The dial wheel 5 extends through the surface of the relief groove 6 to the outside. Maintenance personnel can rotate the dial wheel 5 to drive the connecting shaft 402 and the first threaded rod 403 to rotate, further improving the convenience of replacing the wrench head 2. The fastening bolt 8 can be threaded through the extension hole 701 of the mounting cylinder 7. Continuously rotating the fastening bolt 8 can extend one end of the fastening bolt 8 into the mounting groove 401 and abut against the dial wheel 5, thereby fixing the position of the dial wheel 5 and minimizing the possibility of the dial wheel 5 rotating accidentally, which would affect the stability of the wrench head 2.

[0032] The adjusting rod 19 can drive the first gear 20 to rotate. Since the teeth of the first gear 20 and the second gear 21 mesh with each other, the rotation of the first gear 20 drives the rotation of the second gear 21. The second gear 21 is coaxially and fixedly connected to the second threaded rod 16. The rotation of the second gear 21 drives the rotation of the second threaded rod 16. The surface of the second threaded rod 16 is threadedly connected to the extension rod 17. The extension rod 17 is limited by the limiting plate 18. Therefore, the rotation of the second threaded rod 16 drives the extension rod 17 to extend, so as to increase the length of the sleeve rod 14 and increase the torque by using the lever principle. Rotating the adjusting rod 19 makes the extension rod 17 return to its original position. The position of the extension rod 17 is limited by the positioning ring 22 to avoid the extension rod 17 from contacting the first gear 20 as much as possible.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A torque wrench, comprising a wrench body (1), characterized in that: One end of the wrench body (1) is provided with a wrench head (2), one end of the wrench head (2) is fixedly connected to a connector (3), one end of the connector (3) is provided with a mating part (4), one side of the mating part (4) is provided with an installation groove (401), the inner wall of the installation groove (401) is rotatably connected to a connecting shaft (402), one end of the connecting shaft (402) is fixedly connected to a first threaded rod (403), one side of the connector (3) is provided with a threaded hole (301), and the surface of the first threaded rod (403) is threadedly connected to the inner wall of the threaded hole (301).

2. A torque wrench according to claim 1, characterized in that: A dial wheel (5) is fixedly connected to the surface of the connecting shaft (402). A clearance groove (6) is provided on one side of the docking part (4). The inner wall of the clearance groove (6) is connected to the inner wall of the mounting groove (401). The dial wheel (5) is located between the mounting groove (401) and the clearance groove (6).

3. A torque wrench according to claim 2, characterized in that: The mounting cylinder (7) is fixedly connected to one side of the docking part (4). An extension hole (701) is provided at one end of the mounting cylinder (7). The inner wall of the extension hole (701) is connected to the inner wall of the mounting groove (401). A fastening bolt (8) is threadedly connected to the inner wall of the extension hole (701). One end of the fastening bolt (8) abuts against the surface of the dial wheel (5).

4. A torque wrench according to claim 3, characterized in that: A limiting groove (302) is provided on one side of the connector (3), and a limiting block (9) is fixedly connected to the inner wall of the mounting groove (401). The surface of the limiting block (9) is slidably connected to the inner wall of the limiting groove (302).

5. A torque wrench according to claim 4, characterized in that: The wrench head (2) has a mounting hole (10) on one side. A bidirectional ratchet head (11) is fixedly connected to the inner wall of the mounting hole (10). A sleeve (12) is snapped onto the surface of the bidirectional ratchet head (11).

6. An adjustable grip, comprising a torque wrench as described in claim 5, wherein a trigger rod (13) is connected to the other side of the mating member (4), characterized in that: The trigger rod (13) is fixedly fitted with a sleeve rod (14), and the sleeve rod (14) is movable to adjust the handle (15). The inner wall of the adjusting handle (15) is rotatably connected to a second threaded rod (16), and the surface of the second threaded rod (16) is threadedly connected to an extension rod (17). The surface of the extension rod (17) is slidably connected to the inner wall of the adjusting handle (15), and the surface of the extension rod (17) is fixedly connected to a limit plate (18). The surface of the limit plate (18) is slidably connected to the inner wall of the adjusting handle (15).

7. An adjustable grip according to claim 6, characterized in that: The inner cavity of the adjusting handle (15) is rotatably connected to an adjusting rod (19), one end of the adjusting rod (19) is fixedly connected to a first gear (20), and the surface of the second threaded rod (16) is fixedly connected to a second gear (21). The teeth of the first gear (20) and the teeth of the second gear (21) mesh with each other.

8. An adjustable grip according to claim 6, characterized in that: The inner wall of the adjusting handle (15) is fixedly connected to a positioning ring (22), and one side of the positioning ring (22) abuts against one end of the extension rod (17).

Images