Torque wrench

Abstract

The utility model discloses a torque wrench which comprises a connecting head part, a rod piece part and a positioning sleeve, the connecting head part is fixedly connected with the rod piece part through a connecting piece, the positioning sleeve is arranged on the outer side of the rod piece part, and the torque wrench is characterized in that an insulating sleeve is arranged at the joint of the connecting head part and the rod piece part, and the insulating sleeve is sleeved and wrapped on the outer side of the connecting piece. The torque wrench is compact and reasonable in structural design, simple in overall structure and high in practicability, the insulating sleeve is arranged between the connecting head portion and the rod piece portion and just wraps the connecting portion of the connecting head portion and the rod piece portion, a connecting piece is hidden and protected, and therefore the using safety and convenience of the torque wrench can be improved through isolation protection of the insulating sleeve, and the torque wrench is suitable for popularization and application. Meanwhile, the connecting piece can be prevented from being corroded, oxidized or mechanically damaged, external dust, impurities and the like are prevented from entering the torque wrench from the connecting position of the connecting piece and the torque wrench, and the service life of the torque wrench is prolonged.

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] A torque wrench, also known as a torque wrench, torque wrench or torque adjustable wrench, is a type of wrench. It can set and control the torque applied to the bolt or nut as needed, thereby ensuring the connection quality of the fastener. The head of the torque wrench is connected and assembled with a connector between the rod, and the connector is exposed. For example, the existing patent literature discloses an invention patent for a torque wrench with a counting display (Announcement No.: CN1640625A). However, this design makes the connector susceptible to corrosion, wear, etc. caused by the external environment, and external dust and impurities can easily enter the torque wrench from the connection between the head and the rod, which affects the service life and performance of the torque wrench. And the connector is usually made of metal and has good conductivity, so when the connector is directly exposed to the environment, it will also increase the risk of electric shock. Summary of the invention

[0003] The utility model aims to provide a technical solution for a torque wrench in view of the deficiencies in the prior art. The structural design is compact and reasonable, the overall structure is simple, and the practicability is strong. An insulating sleeve is arranged between the connecting head and the rod part, and the insulating sleeve just wraps the connection between the connecting head and the rod part to hide and protect the connecting part. Thus, the safety and convenience of using the torque wrench can be increased through the isolation protection of the insulating sleeve. At the same time, the connecting part can be prevented from being corroded, oxidized or mechanically damaged, and external dust, impurities, etc. can be prevented from entering the torque wrench from the connection between the two, thereby extending the service life of the torque wrench.

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

[0005] A torque wrench comprises a connecting head, a rod part and a positioning sleeve, wherein the connecting head and the rod part are fixedly connected via a connecting piece, and the positioning sleeve is arranged on the outside of the rod part, and is characterized in that: an insulating sleeve is arranged at the connection between the connecting head and the rod part, and the insulating sleeve is arranged and wrapped on the outside of the connecting piece; an insulating sleeve is arranged between the connecting head and the rod part, and the insulating sleeve just wraps the connection between the connecting head and the rod part, and the connecting piece is hidden and protected, so that the safety and convenience of using the torque wrench can be increased through the isolation protection of the insulating sleeve, and at the same time, the connecting piece can be prevented from being corroded, oxidized or mechanically damaged, and external dust, impurities, etc. can be prevented from entering the torque wrench from the connection between the two, thereby extending the service life of the torque wrench.

[0006] Furthermore, the connecting member is a pin shaft, a connecting hole one is provided on the connecting head portion, and a connecting hole two is provided on the rod portion. The pin shaft passes through the connecting hole one and the connecting hole two to fix the connecting head portion and the rod portion. The structural design is ingenious and reasonable, and the connecting head portion and the rod portion are connected by the pin shaft, which can ensure the firmness and reliability of the connection between the two, and the installation and disassembly are convenient and simple, which is convenient for practical operation and also convenient for subsequent inspection and maintenance.

[0007] Furthermore, an inner groove 1 is provided on the outer wall of the insulating sleeve, and an avoidance groove is provided on the inner wall of the insulating sleeve. The design of the inner groove 1 can optimize the structure of the insulating sleeve, reduce the weight of the insulating sleeve, and improve the convenience and comfort of operating the torque wrench. The design of the avoidance groove can ensure the internal space of the insulating sleeve so that the insulating sleeve will not interfere with the connector after installation.

[0008] Furthermore, a limiting convex ring 1 of an integrally formed structure is provided on the connecting head, and a limiting ring groove 1 is provided on the inner side wall of the insulating sleeve. The limiting convex ring 1 matches the limiting ring groove 1, and the limiting convex ring 1 is embedded and clamped in the limiting ring groove 1. The structural design is ingenious and reasonable. Through the matching and clamping of the limiting convex ring 1 and the limiting ring groove 1, the connection and fixation between the insulating sleeve and the connecting head can be achieved, ensuring the stability and reliability of the connection between the two, effectively preventing the insulating sleeve from falling off, and facilitating the precise installation and positioning between the insulating sleeve and the connecting head, which is convenient for actual assembly. The limiting convex ring 1 and the connecting head are designed as an integrally formed structure, which can not only ensure the overall structural strength, but also facilitate actual processing and forming.

[0009] Furthermore, a second limiting convex ring is provided on the rod part, and a second limiting ring groove is provided on the inner side wall of the insulating sleeve. The second limiting convex ring matches the second limiting ring groove, and the second limiting convex ring is embedded and clamped in the second limiting ring groove. The structural design is ingenious and reasonable. Through the matching clamping of the first limiting convex ring and the second limiting ring groove, the connection and fixation between the insulating sleeve and the rod part can be achieved, and the stability and reliability of the connection between the two can be ensured, and the insulating sleeve can be prevented from loosening and falling off. It is also convenient for the precise installation and positioning between the insulating sleeve and the rod part. At the same time, with the precise clamping between the first limiting convex ring and the first limiting ring groove, the insulating sleeve can indirectly connect the connecting head and the rod part, thereby improving the connection strength between the connecting head and the rod part, making the overall structure more firm and reliable.

[0010] Furthermore, one end of the rod part is connected to the connecting head, and the other end of the rod part is connected to the handle. The outer wall of the handle is evenly provided with anti-skid convex rings of an integrally formed structure, and two inner grooves are formed between adjacent anti-skid convex rings. The design is ingenious and reasonable. The design of the anti-skid convex ring on the handle can increase the friction when holding, increase the anti-skid effect, prevent the torque wrench from slipping from the hand during use, and improve the safety and stability of operation. The design of the two inner grooves between adjacent anti-skid convex rings can reduce the weight of the handle and is more convenient for actual holding.

[0011] Furthermore, a terminal section 1 is provided at one end of the handle, and a terminal section 2 is provided at the other end of the handle. The terminal section 1, the terminal section 2 and the handle are integrally formed structures. The outer circular wall size of the terminal section 1 and the outer circular wall size of the terminal section 2 are both larger than the outer circular wall size of the anti-slip convex ring. The terminal section 1, the terminal section 2 and the handle are integrally formed, which can ensure the overall structural strength and is more convenient for actual processing and forming. The design of the terminal section 1 and the terminal section 2 can enhance the structural strength of the handle and facilitate the connection and assembly between the handle and other components. A positioning insert ring and a limiting groove are provided at one end of the terminal section to facilitate the connection between the handle and the positioning sleeve and the rod part. A cover is installed at the port of the terminal section 2 to seal and block the end of the handle and at the same time limit the outer circular wall size of the terminal section 1 and the terminal section 2. The outer circular wall size of the two is larger than the outer circular wall size of the anti-slip convex ring, so that the terminal section 1 and the terminal section 2 can be used as limiting parts at both ends of the handle, further increasing the friction between the handle and the palm, effectively preventing the handle from falling off, and improving the holding stability.

[0012] Furthermore, cross sections are evenly arranged on the circumferential direction of the outer circumferential wall of the anti-slip convex ring, so that the cross section of the anti-slip convex ring is hexagonal, and the connection between adjacent cross sections is connected by a circular arc segment transition. The design of the cross section can increase the irregularity of the surface of the anti-slip convex ring, enhance the grip and stability of the handle surface, increase the friction between the handle and the hand, and increase the anti-slip effect. At the same time, the adjacent cross sections are connected by circular arc segments, which increases the overall strength and stability of the anti-slip convex ring, reduces stress concentration at the connection, extends the service life, makes the connection smoother, improves the comfort of use and operational safety, and also increases the overall aesthetics of the handle.

[0013] Furthermore, the handle is provided with a positioning ring, and the positioning sleeve is provided with a positioning slot. The positioning ring is inserted into the positioning slot, and the positioning ring and the positioning slot are matched and inserted to achieve precise insertion and fixation between the handle and the positioning sleeve. The design is reasonable and the assembly is convenient and simple.

[0014] Furthermore, a limit slot is provided on the inner wall of the handle, and a limit block is provided on the rod part. The limit slot and the limit block match one-to-one, and the limit block is clamped in the limit slot. The design of the limit block and the limit slot realizes precise clamping and positioning between the handle and the rod part, and the positioning ring and the positioning slot are combined for plug-in fixation, which effectively ensures the installation stability and reliability of the handle.

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

[0016] The utility model has a compact and reasonable structural design, a simple overall structure and strong practicality. An insulating sleeve is arranged between the connecting head and the rod part, and the insulating sleeve just wraps the connecting part of the connecting head and the rod part to hide and protect the connecting part. Thus, the safety and convenience of using the torque wrench can be increased through the isolation protection of the insulating sleeve. At the same time, the connecting part can be prevented from being corroded, oxidized or mechanically damaged, and external dust, impurities and the like can be prevented from entering the torque wrench from the connecting part between the two, thereby extending the service life of the torque wrench. 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 a torque wrench of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0020] Figure 3 A schematic diagram of the assembly structure of the connection between the connecting head and the rod part in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the insulating sleeve in the utility model;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure from another perspective;

[0023] Figure 6 This is a schematic diagram of the structure of the handle in the utility model;

[0024] Figure 7 This is a schematic diagram of the planar structure of the handle in the utility model;

[0025] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure of AA;

[0026] Fig. 9 It is a schematic diagram of the position distribution structure of the limit block on the rod part in the utility model.

[0027] In the figure: 1-connecting head; 2-rod part; 3-positioning sleeve; 4-insulating sleeve; 5-connecting hole one; 6-connecting hole two; 7-inner groove one; 8-avoidance groove; 9-limiting convex ring one; 10-limiting ring groove one; 11-limiting convex ring two; 12-limiting ring groove two; 13-handle; 14-anti-slip convex ring; 15-inner groove two; 16-terminal section one; 17-terminal section two; 18-cross section; 19-arc section; 20-positioning plug ring; 21-positioning slot; 22-limiting card slot; 23-limiting card block; 24-cover. DETAILED DESCRIPTION

[0028] like Figures 1 to 9 As shown, a torque wrench of the utility model comprises a connecting head 1, a rod part 2 and a positioning sleeve 3. The connecting head 1 and the rod part 2 are fixedly connected by a connecting piece (not shown in the figure). The positioning sleeve 3 is arranged on the outside of the rod part 2. The connecting piece is a pin shaft. A connecting hole 1 5 is arranged on the connecting head 1, and a connecting hole 2 6 is arranged on the rod part 2. The pin shaft penetrates the connecting hole 1 5 and the connecting hole 2 6 to fix the connecting head 1 and the rod part 2. The structural design is ingenious and reasonable. The connecting head 1 and the rod part 2 are connected by a pin shaft, which can ensure the firmness and reliability of the connection between the two. The installation and disassembly are convenient and simple, which is convenient for practical operation and also convenient for subsequent inspection and maintenance.

[0029] An insulating sleeve 4 is provided at the connection between the connecting head 1 and the rod part 2, and the insulating sleeve 4 is wrapped around the outside of the connecting part; an insulating sleeve 4 is provided between the connecting head 1 and the rod part 2, and the insulating sleeve 4 just wraps around the connection between the connecting head 1 and the rod part 2, hiding and protecting the connecting part, thereby increasing the safety and convenience of the torque wrench through the isolation protection of the insulating sleeve 4, and also preventing the connecting part from being corroded, oxidized or mechanically damaged, and preventing external dust, impurities, etc. from entering the torque wrench from the connection between the two, thereby extending the service life of the torque wrench. An inner groove 7 is provided on the outer wall of the insulating sleeve 4, and an avoidance groove 8 is provided on the inner wall of the insulating sleeve 4. The design of the inner groove 7 can optimize the structure of the insulating sleeve 4, reduce the weight of the insulating sleeve 4, and improve the convenience and comfort of the operation of the torque wrench. The design of the avoidance groove 8 can ensure the internal space of the insulating sleeve 4, so that the insulating sleeve 4 will not conflict with the connecting part after installation.

[0030] A limiting convex ring 9 of an integrally formed structure is provided on the connecting head 1, and a limiting ring groove 10 is provided on the inner side wall of the insulating sleeve 4. The limiting convex ring 9 matches the limiting ring groove 10, and the limiting convex ring 9 is embedded and clamped in the limiting ring groove 10. The structural design is ingenious and reasonable. Through the matching and clamping of the limiting convex ring 9 and the limiting ring groove 10, the connection and fixation between the insulating sleeve 4 and the connecting head 1 can be achieved, ensuring the stability and reliability of the connection between the two, effectively preventing the insulating sleeve 4 from falling off, and facilitating the precise installation and positioning between the insulating sleeve 4 and the connecting head 1, which is convenient for actual assembly. The limiting convex ring 9 and the connecting head 1 are designed as an integrally formed structure, which can not only ensure the overall structural strength, but also facilitate actual processing and molding.

[0031] A limiting convex ring 11 is provided on the rod part 2, and a limiting ring groove 12 is provided on the inner side wall of the insulating sleeve 4. The limiting convex ring 11 matches the limiting ring groove 12, and the limiting convex ring 11 is embedded and clamped in the limiting ring groove 12. The structural design is ingenious and reasonable. Through the matching clamping of the limiting convex ring 19 and the limiting ring groove 12, the connection and fixation between the insulating sleeve 4 and the rod part 2 can be achieved, and the connection stability and reliability between the two can be ensured, and the insulating sleeve 4 can be prevented from loosening and falling off, and the precise installation and positioning between the insulating sleeve 4 and the rod part 2 can be facilitated. At the same time, with the precise clamping between the limiting convex ring 9 and the limiting ring groove 10, the insulating sleeve 4 can indirectly connect the connecting head 1 and the rod part 2, thereby improving the connection strength between the connecting head 1 and the rod part 2, and making the overall structure more firm and reliable.

[0032] One end of the rod part 2 is connected to the connecting head 1, and the other end of the rod part 2 is connected to the handle 13. The outer side wall of the handle 13 is evenly provided with anti-skid convex rings 14 of an integrally formed structure, and inner grooves 15 are formed between adjacent anti-skid convex rings 14. The design is ingenious and reasonable. The design of the anti-skid convex ring 14 on the handle 13 can increase the friction when holding, increase the anti-skid effect, prevent the torque wrench from slipping from the hand during use, and improve the safety and stability of operation. The design of the inner grooves 15 between adjacent anti-skid convex rings 14 can reduce the weight of the handle 13 and is more convenient for actual holding. The outer circumferential wall of the anti-skid convex ring 14 is evenly provided with cross-sections 18 in the circumferential direction, so that the cross-section of the anti-skid convex ring 14 is hexagonal, and the connection between adjacent cross-sections 18 is transitionally connected by arc segments 19. The design of the cross-section 18 can increase the irregularity of the surface of the anti-skid convex ring 14, enhance the grip and stability of the handle 13 surface, increase the friction between the handle 13 and the hand, and increase the anti-skid effect. At the same time, the arc segments 19 are used to transitionally connect the adjacent cross-sections 18, which increases the overall strength and stability of the anti-skid convex ring 14, reduces stress concentration at the connection, extends the service life, makes the connection smoother, improves the comfort of use and operational safety, and also increases the overall aesthetics of the handle 13.

[0033] One end of the handle 13 is provided with a terminal section 16, and the other end of the handle 13 is provided with a terminal section 2 17. The terminal section 16, the terminal section 2 17 and the handle 13 are an integrally formed structure. The outer circular wall size of the terminal section 16 and the outer circular wall size of the terminal section 2 17 are both larger than the outer circular wall size of the anti-slip convex ring 14. The terminal section 16, the terminal section 2 17 and the handle 13 are integrally formed, which can ensure the overall structural strength and is more convenient for actual processing and forming. The design of the terminal section 16 and the terminal section 2 17 can enhance the structural strength of the handle 13 and facilitate the connection and assembly between the handle 13 and other components. A positioning insert ring 20 and a limiting groove 22 are provided at the terminal section 16 to facilitate the connection between the handle 13 and the positioning sleeve 3 and the rod part 2. A cover 24 is installed at the port of the terminal section 2 17 to seal and cover the end of the handle 13. At the same time, the outer circular wall dimensions of the terminal section 16 and the terminal section 2 17 are limited. The outer circular wall dimensions of the two are larger than the outer circular wall dimensions of the anti-slip convex ring 14, so that the terminal section 16 and the terminal section 2 17 can be used as limiting parts at both ends of the handle 13, further increasing the friction between the handle 13 and the palm, effectively preventing the handle 13 from falling off, and improving the holding stability.

[0034] The handle 13 is provided with a positioning insert ring 20, and the positioning sleeve 3 is provided with a positioning slot 21. The positioning insert ring 20 is inserted into the positioning slot 21. The positioning insert ring 20 and the positioning slot 21 are matched and inserted to achieve accurate insertion and fixation between the handle 13 and the positioning sleeve 3. The design is reasonable and the assembly is convenient and simple. A limited card slot 22 is provided on the inner side wall of the handle 13, and a limited card block 23 is provided on the rod part 2. The limited card slot 22 and the limited card block 23 are matched one by one. The limited card block 23 is clamped in the limited card slot 22. The design of the limited card block 23 and the limited card slot 22 achieves accurate clamping and positioning between the handle 13 and the rod part 2, and then cooperates with the insertion and fixation of the positioning insert ring 20 and the positioning slot 21 to effectively ensure the installation stability and reliability of the handle 13.

[0035] The utility model has a compact and reasonable structural design, a simple overall structure and strong practicality. An insulating sleeve 4 is arranged between the connecting head 1 and the rod part 2. The insulating sleeve 4 just wraps the connection between the connecting head 1 and the rod part 2 to hide and protect the connecting piece. Thus, the safety and convenience of using the torque wrench can be increased through the isolation protection of the insulating sleeve 4. At the same time, the connecting piece can be prevented from being corroded, oxidized or mechanically damaged, and external dust, impurities and the like can be prevented from entering the torque wrench from the connection between the two, thereby extending the service life of the torque wrench.

[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. A torque wrench, comprising a connecting head, a rod part and a positioning sleeve, wherein the connecting head and the rod part are fixedly connected by a connecting member, and the positioning sleeve is arranged outside the rod part, characterized in that: An insulating sleeve is provided at the connection between the connecting head and the rod part, and the insulating sleeve is wrapped around the outside of the connecting part.

2. A torque wrench according to claim 1, characterized in that: The connecting member is a pin, a connecting hole 1 is arranged on the connecting head, a connecting hole 2 is arranged on the rod part, and the pin passes through the connecting hole 1 and the connecting hole 2 to fix the connecting head and the rod part.

3. A torque wrench according to claim 1, characterized in that: An inner groove 1 is arranged on the outer side wall of the insulating sleeve, and an avoidance groove is arranged on the inner side wall of the insulating sleeve.

4. A torque wrench according to claim 1, characterized in that: The connecting head is provided with a limiting convex ring of an integrally formed structure, the inner side wall of the insulating sleeve is provided with a limiting ring groove, the limiting convex ring matches the limiting ring groove, and the limiting convex ring is embedded and clamped in the limiting ring groove.

5. A torque wrench according to claim 1, characterized in that: The rod part is provided with a second limiting convex ring, the inner side wall of the insulating sleeve is provided with a second limiting ring groove, the second limiting convex ring matches the second limiting ring groove, and the second limiting convex ring is embedded and clamped in the second limiting ring groove.

6. A torque wrench according to claim 1, characterized in that: One end of the rod part is connected to the connecting head, and the other end of the rod part is connected to a handle. The outer side wall of the handle is evenly provided with anti-skid convex rings of an integrally formed structure, and inner grooves 2 are formed between adjacent anti-skid convex rings.

7. A torque wrench according to claim 6, characterized in that: A terminal section 1 is provided at one end of the handle, and a terminal section 2 is provided at the other end of the handle. The terminal section 1, the terminal section 2 and the handle are an integrally formed structure, and the outer circular wall size of the terminal section 1 and the outer circular wall size of the terminal section 2 are both larger than the outer circular wall size of the anti-slip convex ring.

8. A torque wrench according to claim 6, characterized in that: The outer circumferential wall of the anti-skid convex ring is evenly provided with cross sections, so that the cross section of the anti-skid convex ring is hexagonal, and the connection points of adjacent cross sections are connected by arc segments.

9. A torque wrench according to claim 6, characterized in that: The handle is provided with a positioning insert ring, the positioning sleeve is provided with a positioning slot, and the positioning insert ring is inserted into the positioning slot.

10. A torque wrench according to claim 6, characterized in that: A limit card slot is arranged on the inner side wall of the handle, and a limit card block is arranged on the rod part. The limit card slot and the limit card block are matched one by one, and the limit card block is clamped in the limit card slot.

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