Torque wrench capable of adjusting torque

Abstract

The utility model relates to the technical field of torque wrenches, and discloses a torque wrench capable of adjusting torque, which comprises an inner pipe component, a handle sleeve and a ratchet head, the handle sleeve and the ratchet head are sleeved outside the inner pipe component, the inner pipe component comprises a first inner pipe and a second inner pipe which are matched in a detachable manner, and an integrated sleeve is integrally formed on the periphery of the first inner pipe. A sleeve part of a traditional torque wrench is replaced into a detachable assembly type, when the first inner pipe and the second inner pipe are in butt joint, firstly, the connecting end outside the second inner pipe is in butt joint with the interior of the integrated sleeve, and when the second inner pipe is rotated, the connecting end outside the second inner pipe is in butt joint with the interior of the integrated sleeve. The connecting end can be in threaded connection and fixation with the internal thread in the integrated sleeve through the external thread, so that the first inner pipe and the second inner pipe are mounted and dismounted similarly, the metal block and the spring in the second inner pipe can be taken out and replaced, and the effect that the spring is conveniently and rapidly dismounted, replaced and used is achieved.

Description

Technical Field

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

[0002] A torque wrench, also known as a torque wrench or an adjustable torque wrench, is a type of wrench that allows the operator to apply a specific torque value when the tightness of screws and bolts is critical.

[0003] When the existing torque wrench sets the torque value of the spring inside the sleeve, the handle is turned to control the screw shaft inside the sleeve to apply pressure to the spring, so that it generates torque force. However, when the spring is squeezed and stretched for a long time, its own elasticity will also be fatigued and damaged, resulting in its elastic moment error, so that the spring needs to be maintained and replaced regularly. When replacing the spring inside the handle of the existing torque wrench, the external components of the handle need to be disassembled one by one, resulting in the overall disassembly and replacement process being cumbersome. For this reason, we propose a torque wrench with adjustable torque. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a torque wrench with adjustable torque.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a torque wrench with adjustable torque, comprising an inner tube assembly, a handle sleeve and a ratchet head which are sleeved on the outside of the inner tube assembly, a drive shaft being arranged on one side of the ratchet head, a disassembly sleeve being arranged on the outside of the drive shaft, a metal rod connected to the end of the ratchet head being arranged inside the inner tube assembly, a metal block pressure-fitted with the metal rod being arranged inside the inner tube assembly, a spring supporting and fitting with the end of the metal block being arranged inside the inner tube assembly, the inner tube assembly comprising a first inner tube and a second inner tube which are disassembled and fitted, an integral sleeve being integrally formed on the periphery of the first inner tube, and a connecting end being integrally formed on the periphery of the second inner tube.

[0006] Preferably, the inner side of the integrated sleeve is provided with an internal thread, and the outer side of the connecting end is provided with an external thread;

[0007] Furthermore, when the first inner tube and the second inner tube are butt-jointed and installed, the outer threads on the periphery of the connection end and the inner threads on the inner side of the integrated sleeve are in a threaded connection state.

[0008] Preferably, a mounting plate is provided inside the disassembly sleeve, a fixing screw shaft is installed on the top of the mounting plate, a locking screw hole is provided at the bottom of the driving shaft, and a disassembly hole for controlling the disassembly and assembly of the mounting plate is provided inside the mounting plate;

[0009] Furthermore, the installation stability between the disassembly sleeve and the drive shaft can be increased by providing the installation sheet and the fixing screw shaft.

[0010] Preferably, after the disassembly sleeve is sleeved on the outside of the drive shaft, when the fixed screw shaft is placed on the end of the drive shaft and the mounting plate is controlled to rotate, the fixed screw shaft is in a threaded connection with the inside of the locking screw hole;

[0011] Furthermore, the top of the mounting piece and the inner end surface of the disassembly sleeve are in an extruded and fixed state.

[0012] Beneficial Effects

[0013] The utility model provides a torque wrench with adjustable torque, which has the following beneficial effects:

[0014] (1) A torque wrench with adjustable torque, in this article, replaces the traditional torque wrench sleeve part with a detachable assembly type, and the outer part of the first inner tube is integrally formed with an integrated sleeve, and the outer part of the second inner tube is integrally formed with a connecting end adapted to the integrated sleeve. When the first inner tube and the second inner tube are docked, the connecting end on the outer side of the second inner tube can be docked with the inner side of the integrated sleeve first, and when the second inner tube is rotated, the connecting end can be threadedly connected and fixed with the inner thread inside the integrated sleeve through the external thread, so that the first inner tube and the second inner tube are installed and disassembled in the same way. When the first inner tube and the second inner tube are quickly disassembled, the metal block and the spring inside the second inner tube can be taken out and replaced, thereby achieving the effect of facilitating the quick disassembly and convenient replacement of the spring.

[0015] (2) A torque wrench with adjustable torque. After the ratchet head is assembled through the drive shaft and the inside of the disassembly sleeve, the nut can be disassembled and installed. After the disassembly sleeve is sleeved to the outside of the drive shaft, the fixed screw shaft on the top of the installation plate can be connected with the end of the drive shaft. Then, an external disassembly and assembly instrument is inserted into the disassembly hole to control the rotation of the installation plate, so that the fixed screw shaft is threadedly connected with the inside of the locking screw hole. The installation plate is used to squeeze and fix the inside of the disassembly sleeve. Compared with the traditional ball fixation, the assembly stability of the disassembly sleeve is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

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

[0019] Figure 2 For this utility model Figure 1 A magnified view of middle;

[0020] Figure 3 It is a partial schematic diagram of the integrated casing of the utility model;

[0021] Figure 4 It is a partial schematic diagram of the disassembly sleeve of the utility model;

[0022] Figure 5 For this utility model Figure 4 Enlarged view of B.

[0023] Legend:

[0024] 1. First inner tube; 2. Second inner tube; 3. Handle cover; 4. Spring; 5. Metal block; 6. Ratchet head; 7. Metal rod; 8. Integrated sleeve; 9. Connecting end; 10. Internal thread; 11. External thread; 12. Drive shaft; 13. Disassembly sleeve; 14. Mounting plate; 15. Fixed screw shaft; 16. Locking screw hole; 17. Disassembly hole; 18. Inner tube assembly. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment: A torque wrench with adjustable torque, such as Figure 1-Figure 5As shown, it includes an inner tube assembly 18 and a handle sleeve 3 sleeved on the outside of the inner tube assembly 18 and a ratchet head 6, a driving shaft 12 is provided on one side of the ratchet head 6, a disassembly sleeve 13 is provided on the outside of the driving shaft 12, a metal rod 7 connected to the end of the ratchet head 6 is provided inside the inner tube assembly 18, a metal block 5 pressure-matched with the metal rod 7 is provided inside the inner tube assembly 18, and a spring 4 supporting and matching with the end of the metal block 5 is provided inside the inner tube assembly 18;

[0027] The inner tube assembly 18 includes a first inner tube 1 and a second inner tube 2 which are compatible for assembly and disassembly. The outer periphery of the first inner tube 1 is integrally formed with an integral sleeve 8, the outer periphery of the second inner tube 2 is integrally formed with a connecting end 9, the inner side of the integral sleeve 8 is provided with an internal thread 10, the outer periphery of the connecting end 9 is provided with an external thread 11, a mounting plate 14 is provided inside the disassembly sleeve 13, a fixing screw shaft 15 is installed on the top of the mounting plate 14, a locking screw hole 16 is provided at the bottom of the driving shaft 12, and a disassembly hole 17 for controlling the disassembly and assembly of the mounting plate 14 is provided inside the mounting plate 14.

[0028] Furthermore, when the first inner tube 1 and the second inner tube 2 are butt-jointed and installed, the outer thread 11 on the outer periphery of the connecting end 9 and the inner thread 10 on the inner side of the integrated sleeve 8 are in a threaded connection state.

[0029] Furthermore, after the disassembly sleeve 13 is sleeved on the outside of the drive shaft 12 , when the fixing screw shaft 15 is placed on the end of the drive shaft 12 and the mounting plate 14 is controlled to rotate, the fixing screw shaft 15 is in a threaded connection with the inside of the locking screw hole 16 .

[0030] Furthermore, the top of the mounting piece 14 and the inner end surface of the disassembly sleeve 13 are in an extruded and fixed state.

[0031] The working principle of this utility model:

[0032] The inner tube assembly 18 includes a first inner tube 1 and a second inner tube 2 that can be disassembled and assembled together, and the first inner tube 1 is integrally formed with an integral sleeve 8 on the outside, and the second inner tube 2 is integrally formed with a connecting end 9 that is compatible with the integral sleeve 8 on the outside. When the first inner tube 1 and the second inner tube 2 are docked, the connecting end 9 on the outside of the second inner tube 2 can be docked with the inside of the integral sleeve 8 first, and when the second inner tube 2 is rotated, the connecting end 9 can be threadedly connected and fixed with the internal thread 10 inside the integral sleeve 8 through the external thread 11, so that the first inner tube 1 and the second inner tube 2 are installed and disassembled in the same way. When the first inner tube 1 and the second inner tube 2 are quickly disassembled, the metal block 5 and the spring 4 inside the second inner tube 2 can be taken out and replaced, thereby facilitating the quick disassembly and convenient replacement of the spring 4.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A torque wrench with adjustable torque, comprising an inner tube assembly (18), a handle sleeve (3) sleeved on the outside of the inner tube assembly (18), and a ratchet head (6), wherein a metal rod (7) connected to the end of the ratchet head (6) is arranged inside the inner tube assembly (18), a metal block (5) pressure-matched with the metal rod (7) is arranged inside the inner tube assembly (18), and a spring (4) supporting and matching with the end of the metal block (5) is arranged inside the inner tube assembly (18), characterized in that: The inner tube assembly (18) comprises a first inner tube (1) and a second inner tube (2) which can be assembled and disassembled. The first inner tube (1) is integrally formed with an integral sleeve (8) on its periphery, and the second inner tube (2) is integrally formed with a connecting end (9) on its periphery. A drive shaft (12) is provided on one side of the ratchet head (6), and a disassembly sleeve (13) is provided on the outside of the drive shaft (12).

2. A torque wrench with adjustable torque according to claim 1, characterized in that: The inner side of the integrated sleeve (8) is provided with an internal thread (10), and the outer side of the connecting end (9) is provided with an external thread (11). When the first inner tube (1) and the second inner tube (2) are butt-jointed, the external thread (11) on the outer side of the connecting end (9) and the internal thread (10) on the inner side of the integrated sleeve (8) are in a threaded connection state.

3. The torque wrench with adjustable torque according to claim 1, characterized in that: The disassembly sleeve (13) is provided with a mounting plate (14) inside, a fixing screw shaft (15) is installed on the top of the mounting plate (14), a locking screw hole (16) is provided on the bottom of the driving shaft (12), and a disassembly hole (17) for controlling the disassembly and assembly of the mounting plate (14) is provided inside the mounting plate (14).

4. A torque wrench with adjustable torque according to claim 3, characterized in that: After the disassembly sleeve (13) is sleeved on the outside of the drive shaft (12), when the fixed screw shaft (15) is placed on the end of the drive shaft (12) and the mounting plate (14) is controlled to rotate, the fixed screw shaft (15) is in a threaded connection with the inside of the locking screw hole (16).

5. The torque wrench with adjustable torque according to claim 4, characterized in that: The top of the installation piece (14) and the inner end surface of the disassembly sleeve (13) are in a state of being squeezed and fixed.

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