Torque wrench

Abstract

The utility model discloses a torque wrench which comprises a wrench head part and a grab handle part, an inner steel pipe is arranged between the wrench head part and the grab handle part to achieve connection between the wrench head part and the grab handle part, an adjusting assembly is arranged on the wrench head part and comprises a ratchet wheel and a shifting part, and the shifting part is matched with the ratchet wheel to achieve direction conversion of the wrench head part. And a sleeve is sleeved on the inner steel pipe. The wrench head is connected with the grab handle part through the inner steel pipe, the overall stability and firmness of the torque wrench are guaranteed, the inner steel pipe is sleeved with the sleeve, the attractiveness of the wrench is improved, meanwhile, the holding comfort of the grab handle part is enhanced, the direction of the wrench head is converted through the adjusting assembly, and the torque wrench is convenient to use. The shape and the size of the grab handle part are suitable for the hand shapes of most people, and comfortable holding experience is provided.

Description

Technical Field

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

[0002] In many mechanical equipment with higher requirements, there are certain requirements for the pre-tightening force of bolts and nuts during threaded connection. Too much pre-tightening force will damage the threads, and too little pre-tightening force will easily loosen them. Therefore, in the fields of automobiles and aviation, torque wrenches are used to tighten bolts or nuts to make their pre-tightening force conform to the normal pre-tightening force range of their use. Torque wrenches have been widely used. Torque wrenches usually adjust the output torque by turning the knob behind the handle to drive the pressure rod to compress / relax the elastic part through the knob. In the prior art, wrenches may be misoperated or rotated in the opposite direction during use, which may cause damage or safety hazards. Utility Model Content

[0003] The purpose of the utility model is to provide a technical solution for a torque wrench in view of the deficiencies in the prior art. The utility model has beautiful structure, ingenious design and high practicality. The adjustment component realizes the conversion of the direction of the wrench head, ensuring that the ratchet can only rotate in a predetermined direction, thereby avoiding damage or safety hazards that may be caused by misoperation or reverse rotation, and improving work efficiency and safety.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The torque wrench includes a wrench head and a handle. An inner steel pipe is provided between the wrench head and the handle to realize the connection between the wrench head and the handle. An adjustment component is provided on the wrench head. The adjustment component includes a ratchet and a toggle part. The toggle part matches the ratchet to realize the conversion of the direction of the wrench head. A sleeve is provided on the inner steel pipe. The wrench head and the handle are connected by an inner steel pipe to ensure the overall stability and firmness of the torque wrench. The inner steel pipe is provided with a sleeve, which not only increases the aesthetics of the wrench, but also enhances the comfort of holding the handle. The adjustment component realizes the conversion of the direction of the wrench head. The shape and size of the handle are suitable for the hand shape of most people, providing a comfortable holding experience.

[0006] Furthermore, the toggle part includes an operating handle and a paddle, the bottom of the operating handle is connected to a lever, a limit column is arranged on the lever, a spring is arranged between the paddle and the inner wall of the wrench head, a groove is arranged on the inner wall of the wrench head, a limit protrusion is arranged on the paddle, and the limit protrusion matches the groove. The spring facilitates the user to operate the operating handle to squeeze the paddle to switch the rotation direction of the ratchet, and the limit protrusion matches the groove on the inner wall of the wrench head, ensuring the stability of the paddle during operation.

[0007] Furthermore, the paddle includes paddle 1 and paddle 2, paddle 1 is provided with tooth 1, paddle 2 is provided with tooth 2, and both tooth 1 and tooth 2 match the ratchet; when the operating handle rotates in the direction close to paddle 1, the limit column squeezes paddle 1, and paddle 2 rebounds under the action of the spring, and tooth 2 engages with the ratchet; ensuring that the wrench head can only rotate clockwise, when the operating handle rotates in the direction close to paddle 2, the limit column squeezes paddle 2, and paddle 1 rebounds under the action of the spring, and tooth 1 engages with the ratchet, ensuring that the wrench head can only rotate counterclockwise. Both tooth 1 and tooth 2 match the ratchet, realizing precise locking and limiting of the rotation direction of the ratchet. Ensuring that the ratchet can only rotate in the predetermined direction, thereby avoiding damage or safety hazards that may be caused by misoperation or reverse rotation.

[0008] Furthermore, a through hole 1 is provided on the wrench head, and a through hole 2 is provided on the inner steel pipe. After the wrench head and the inner steel pipe are plugged and installed, the through hole 1 corresponds to the through hole 2, and a latch is provided between the through hole 1 and the through hole 2. This ensures a stable connection between the wrench head and the inner steel pipe, effectively improving the overall strength of the entire tool, and improving the service life and safety of the tool.

[0009] Furthermore, the sleeve is provided with an avoidance groove, which ensures that the sleeve will not interfere or conflict with the second through hole when used in conjunction with the inner steel pipe, and facilitates the smooth passage of the bolt.

[0010] Furthermore, an insulating sleeve is provided between the wrench head and the sleeve, which reduces certain risks and prevents the pin from being removed, thereby ensuring the connection between the wrench head and the inner steel pipe.

[0011] Furthermore, a limiting ring 1 is provided on the wrench head, a limiting ring 2 is provided on the sleeve, a limiting groove 1 is provided at one end of the insulating sleeve, and a limiting groove 2 is provided at the other end of the insulating sleeve, the limiting groove 1 matches the limiting ring 1, and the limiting groove 2 matches the limiting ring 2, so as to ensure the installation firmness of the insulating sleeve.

[0012] Furthermore, the handle is provided with anti-skid patterns, which can increase the friction between the palm and the handle, making it easier to hold.

[0013] Furthermore, a plugging cover is provided at the end of the handle, and the handle and the plugging cover are plugged and fixed, and the plugging cover can effectively prevent dust, water and other debris from entering the interior of the handle.

[0014] Furthermore, the plug cover is screwed and fixed with the handle, and an extension column is provided on the plug cover, and a perforation is provided on the extension column. The plug cover is screwed and fixed with the handle, which is convenient for loading and unloading, and convenient for checking the inside of the wrench. The extension column facilitates the staff to better hold the plug cover, and the extension column is connected to the lanyard through the perforation, which is convenient for users to carry and hang the wrench.

[0015] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0016] The utility model has beautiful structure, ingenious design and high practicality. The adjustment component realizes the conversion of the direction of the wrench head, ensuring that the wrench can only be rotated in a predetermined direction, thereby avoiding damage or safety hazards that may be caused by misoperation or reverse rotation. The insulating sleeve reduces a certain risk and prevents the pin from being moved out, ensuring the connection between the wrench head and the inner steel pipe. The shape and size of the handle are suitable for the hand shape of most people, providing a comfortable holding experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the wrench head in the first embodiment;

[0020] Figure 3 It is a schematic diagram of the position structure of the avoidance groove in the first embodiment;

[0021] Figure 4 It is a schematic diagram of the position structure of the paddle in the first embodiment;

[0022] Figure 5 It is a schematic diagram of the structure of the insulating sleeve in the first embodiment;

[0023] Figure 6 It is a schematic diagram of the structure of the blocking cover in the second embodiment.

[0024] In the figure: 1-wrench head; 2-handle; 3-inner steel pipe; 4-sleeve; 5-sliding part; 6-adjusting assembly; 7-sliding rod; 8-limiting column; 9-paddle one; 10-paddle two; 11-operating handle; 12-paddle; 13-groove; 14-ratchet; 15-through hole one; 16-through hole two; 17-avoidance groove; 18-insulating sleeve; 19-anti-slip pattern; 20-blocking cover; 21-extension column; 22-perforation; 23-limiting protrusion; 24-tooth one; 25-tooth two; 26-limiting ring one; 27-limiting ring two; 28-limiting groove one; 29-limiting groove two. DETAILED DESCRIPTION

[0025] like Figures 1 to 5As shown, it is the first embodiment of the utility model, which includes a wrench head 1 and a handle 2. An inner steel pipe 3 is arranged between the wrench head 1 and the handle 2 to realize the connection between the wrench head 1 and the handle 2. An adjustment component 6 is arranged on the wrench head 1. The adjustment component 6 includes a ratchet 14 and a toggle part 5. The toggle part 5 matches the ratchet 14 to realize the conversion of the direction of the wrench head 1. A sleeve 4 is sleeved on the inner steel pipe 3. The wrench head 1 and the handle 2 are connected by the inner steel pipe 3 to ensure the overall stability and firmness of the torque wrench. The inner steel pipe 3 is sleeved with the sleeve 4, which not only increases the aesthetics of the wrench, but also enhances the grip comfort of the handle 2. The adjustment component 6 realizes the conversion of the direction of the wrench head 1. The shape and size of the handle 2 are suitable for the hand shape of most people, providing a comfortable grip experience.

[0026] The toggle part 5 includes an operating handle 11 and a paddle 12. The bottom of the operating handle 11 is connected to a lever 7. A limit column 8 is provided on the lever 7. A spring is provided between the paddle 12 and the inner wall of the wrench head 1. A groove 13 is provided on the inner wall of the wrench head 1. A limit protrusion 23 is provided on the paddle 12. The limit protrusion 23 matches the groove 13. The spring design between the paddle 12 and the inner wall of the wrench head 1 allows the user to switch the rotation direction of the ratchet 14 by simply operating the paddle 12. The paddle 12 matches the groove 13 on the inner wall of the wrench head 1, ensuring the stability of the paddle 12 during operation. At the same time, the spring design also provides a stable restoring force for the paddle 12, so that it can quickly return to the initial position after each operation, ensuring the reliability of the system.

[0027] The paddle 12 includes a paddle 1 9 and a paddle 2 10. The paddle 1 9 is provided with a tooth 1 24, and the paddle 2 10 is provided with a tooth 25. The tooth 1 24 and the tooth 25 are matched with the ratchet 14. When the operating handle 11 rotates in a direction close to the paddle 1 9, the limit column 8 squeezes the paddle 1 9. At this time, the paddle 2 10 rebounds under the action of the spring, and the tooth 25 meshes with the ratchet 14. It is ensured that the wrench head 1 can only rotate clockwise (to Figure 4 As an example), when the operating handle 11 rotates in the direction close to the second paddle 10, the limit column 8 squeezes the second paddle 10, and the paddle 19 rebounds under the action of the spring, and the tooth 1 24 meshes with the ratchet 14, ensuring that the wrench head 1 can only rotate counterclockwise (with Figure 4 When the operating handle 11 is turned, only one paddle 12 matches the teeth of the ratchet 14, thereby accurately locking and limiting the rotation direction of the ratchet 14, ensuring that the ratchet 14 can only rotate in a predetermined direction, thereby avoiding damage or safety hazards that may be caused by misoperation or reverse rotation.

[0028] A through hole 15 is provided on the wrench head 1, and a through hole 2 16 is provided on the inner steel tube 3. After the wrench head 1 and the inner steel tube 3 are plugged and installed, the through hole 15 corresponds to the through hole 2 16, and a latch is provided between the through hole 15 and the through hole 2 16. The corresponding design of the through hole 15 and the through hole 2 16, and the use of the latch, make the installation and disassembly between the wrench head 1 and the inner steel tube 3 convenient and quick, ensure the stable connection between the wrench head 1 and the inner steel tube 3, avoid operating errors or tool damage caused by looseness or misalignment during use, and tightly connect the wrench head 1 and the inner steel tube 3 by the latch, which can effectively improve the overall strength of the entire tool, so that the tool is not easy to break or damage when subjected to a large torque or impact force, thereby improving the service life and safety of the tool.

[0029] The sleeve 4 is provided with an avoidance groove 17. The design of the avoidance groove 17 ensures that the sleeve 4 will not interfere or conflict with the second through hole 16 when used in conjunction with the inner steel pipe 3, and facilitates the smooth passage of the bolt.

[0030] An insulating sleeve 18 is provided between the wrench head 1 and the sleeve 4. The insulating sleeve 18 can effectively isolate the electrical contact between the wrench head 1 and the sleeve 4, thereby preventing electric shock or short circuit accidents caused by accidental contact. At the same time, it prevents the pin from being removed, helps to extend the service life of the wrench, and reduces the frequency of replacement due to tool damage.

[0031] A limiting ring 1 26 is provided on the wrench head 1, a limiting ring 27 is provided on the sleeve 4, a limiting groove 1 28 is provided at one end of the insulating sleeve 18, and a limiting groove 29 is provided at the other end of the insulating sleeve 18, the limiting groove 1 28 matches the limiting ring 1 26, and the limiting groove 29 matches the limiting ring 27. Ensure the installation firmness of the insulating sleeve 18.

[0032] The handle 2 is provided with anti-skid patterns 19. The design of the anti-skid patterns 19 can increase the friction between the palm and the handle 2, so that the user can hold the tool more stably during operation, preventing the tool from losing control or misoperation due to hand slippage. The anti-skid patterns 19 can not only enhance the holding stability, but also reduce hand fatigue, and can maintain good anti-skid performance during use.

[0033] A plug cover 20 is provided at the end of the handle 2. The plug cover 20 can effectively prevent dust, water and other debris from entering the handle 2, protect the internal mechanical structure from pollution and corrosion, and is usually coordinated with the design of the handle 2 to improve the overall aesthetics of the tool.

[0034] like Figure 6As shown, it is the second embodiment of the present utility model, on the basis of the first embodiment, the plug cover 20 is modified, the plug cover 20 is screwed and fixed with the handle part 2, an extension column 21 is provided on the plug cover 20, and a through hole 22 is provided on the extension column 21. When the plug cover 20 is screwed and fixed with the handle part 2, the extension column 21 facilitates the staff to better hold the plug cover 20, and at the same time, the extension column 21 also increases the length of the handle part 2, which is convenient for use. The setting of the through hole 22 enables the extension column 21 to be connected or fixed with other accessories or tools, thereby expanding the use range and function of the tool, or connecting other tool heads to achieve the effect of one thing for multiple uses, and the extension column 21 is connected to the lanyard through the through hole 22, which is convenient for users to carry and hang the wrench.

[0035] The wrench can be turned during use. When the operating handle 11 is turned, only one paddle 12 matches the teeth of the ratchet 14, achieving accurate locking and limiting of the rotation direction of the ratchet 14, ensuring that the ratchet 14 can only rotate in the predetermined direction, thereby avoiding damage or safety hazards that may be caused by misoperation or reverse rotation. When the operating handle 11 is rotated in the direction close to the paddle 1 9, the limit column 8 squeezes the paddle 1 9, and the paddle 2 10 rebounds under the action of the spring, and the teeth 25 mesh with the ratchet 14. At this time, the wrench head 1 can only rotate clockwise (with a rotation direction of 1 / 2). Figure 4 As an example), when the operating handle 11 rotates in the direction close to the second paddle 10, the limit column 8 squeezes the second paddle 10, and the paddle 19 rebounds under the action of the spring, and the tooth 1 24 meshes with the ratchet 14. At this time, the wrench head 1 can only rotate counterclockwise (with Figure 4 for example).

[0036] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. Torque wrench, including: Wrench head; A handle portion, wherein an inner steel pipe is provided between the wrench head and the handle portion to achieve connection between the wrench head and the handle portion; Features: The wrench head is provided with an adjustment assembly, which includes a ratchet and a toggle portion, and the toggle portion matches the ratchet to achieve the conversion of the direction of the wrench head; A sleeve is sleeved on the inner steel pipe.

2. The torque wrench according to claim 1, characterized in that: The toggle part includes an operating handle and a paddle. The bottom of the operating handle is connected to a paddle rod. A limiting column is arranged on the paddle rod. A spring is arranged between the paddle and the inner wall of the wrench head. A groove is arranged on the inner wall of the wrench head. A limiting protrusion is arranged on the paddle. The limiting protrusion matches the groove.

3. The torque wrench according to claim 2, characterized in that: The paddle comprises a paddle 1 and a paddle 2, the paddle 1 is provided with a tooth 1, the paddle 2 is provided with a tooth 2, and both the tooth 1 and the tooth 2 match the ratchet; When the operating handle rotates in a direction close to the first paddle, the limiting column squeezes the first paddle. At this time, the second paddle rebounds under the action of the spring, and the second tooth engages with the ratchet; when the operating handle rotates in a direction close to the second paddle, the limiting column squeezes the second paddle, and at this time, the first paddle rebounds under the action of the spring, and the first tooth engages with the ratchet.

4. The torque wrench according to claim 1, characterized in that: The wrench head is provided with a through hole 1, the inner steel pipe is provided with a through hole 2, the wrench head is plug-connected and installed with the inner steel pipe, the through hole 1 corresponds to the through hole 2, and a latch is provided between the through hole 1 and the through hole 2.

5. The torque wrench according to claim 1, characterized in that: The sleeve is provided with an avoidance groove.

6. The torque wrench according to claim 1, characterized in that: An insulating sleeve is sleeved between the wrench head and the sleeve.

7. The torque wrench according to claim 6, characterized in that: A limiting ring 1 is arranged on the wrench head, a limiting ring 2 is arranged on the sleeve, a limiting groove 1 is arranged at one end of the insulating sleeve, and a limiting groove 2 is arranged at the other end of the insulating sleeve, the limiting groove 1 matches the limiting ring 1, and the limiting groove 2 matches the limiting ring 2.

8. The torque wrench according to claim 1, characterized in that: The handle is provided with anti-slip patterns.

9. The torque wrench according to claim 1, characterized in that: A blocking cover is arranged at the end of the handle.

10. The torque wrench according to claim 9, characterized in that: The plugging cover is screwed and fixed to the handle portion, and an extension column is arranged on the plugging cover, and a through hole is arranged on the extension column.

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