Torque wrench

Abstract

The utility model provides a torque wrench. The torque wrench comprises a handle, a working rod and a torque detection structure. The handle is provided with an accommodating cavity and a display window, a limiting seat and a dial are arranged in the accommodating cavity, scales and numerical values for marking torque values are arranged on the dial, and the dial is correspondingly arranged at the display window and is displayed through the display window; the torque detection structure is arranged in the accommodating cavity and comprises a torsion seat, a torque detection piece and a pointer; part of the torsion seat extends out of the containing cavity, the part, extending out of the containing cavity, of the torsion seat is connected with the working rod, and the torsion seat can rotate along with the working rod. One end of the torque detection part in the length direction is mounted on the torsion seat, the other end of the torque detection part is mounted on the limiting seat, and the torque detection part limits rotation of the torsion seat along with the working rod and deforms when limiting rotation of the torsion seat; one end of the pointer is connected to the torsion seat, the other end extends to the dial, and the pointer indicates the torque value of the working rod. The torque wrench is simple in structure and low in production cost.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of fastening tools, and in particular, to a torque wrench. Background Art

[0002] A torque wrench is a tool used to apply a specific torque, usually used in mechanical and automotive repairs to ensure that bolts and nuts are tightened to the appropriate specifications.

[0003] In the related art, a torque wrench usually adopts a structure of a sleeve plus a spring plus a ratchet. However, the torque wrench with this structure is complex in structure and high in cost. Utility Model Content

[0004] The embodiments of the present application provide a torque wrench to solve the technical problems of the complex structure and high cost of the torque wrench in the related art.

[0005] The embodiments of the present application provide the following technical solutions to solve the above technical problems:

[0006] The embodiments of the present application provide a torque wrench, including a handle, a working rod, and a torque detection structure;

[0007] The handle is provided with a receiving cavity and a display window. The receiving cavity is provided with a limiting seat and a scale disk. The scale disk is provided with scales and numerical values indicating torque values. The scale disk is correspondingly arranged at the display window and is displayed through the display window;

[0008] The torque detection structure is arranged in the receiving cavity. The torque detection structure includes a torsion seat, a torque detection member, and a pointer; part of the torsion seat extends out of the receiving cavity. The part of the torsion seat extending out of the receiving cavity is connected to the working rod, or the working rod extends into the receiving cavity and is connected to the torsion seat. The torsion seat can rotate with the working rod; one end of the torque detection member in the length direction is installed on the torsion seat, and the other end is installed on the limiting seat. The torque detection member restricts the torsion seat from rotating with the working rod. The torque detection member deforms when restricting the rotation of the torsion seat; one end of the pointer is connected to the torsion seat, and the other end extends to the scale disk. The pointer indicates the torque value of the working rod.

[0009] The beneficial effects of the embodiments of the present application: The torque wrench provided by the embodiments of the present application includes a handle, a working rod, and a torque detection structure. The torque detection mechanism transmits the torque to the torsion seat through the working rod, and then to the torque detection member. The torque detection member deforms, causing the torsion seat to rotate slightly. The rotation of the torsion seat is displayed by the pointer. The pointer rotates and indicates the torque value of the working rod on the scale disk, thereby realizing the detection of the torque of the torque wrench. The torque wrench provided by the embodiments of the present application has a simple structure and low production cost.

[0010] In a possible implementation manner, the torque detection member is a shrapnel;

[0011] The limiting seat includes two relatively arranged and spaced limiting blocks, and at least one of the two limiting blocks is provided with a detachable fixing member;

[0012] One end of the shrapnel is placed between the two limiting blocks and fixed by the fixing member.

[0013] In a possible implementation manner, the torsion seat is provided with an installation opening, and the width of the installation opening is adapted to the thickness of the shrapnel;

[0014] One end of the shrapnel is installed in the installation opening.

[0015] In a possible implementation manner, the handle is provided with at least one through hole, and the through hole penetrates through the accommodating cavity and the outer side surface of the handle;

[0016] The torque detection structure further includes a zero adjustment knob, the zero adjustment knob is sleeved on the torsion seat, and the zero adjustment knob is in damping connection with the torsion seat; at least a part of the zero adjustment knob extends into the through hole, and the zero adjustment knob exposed at the through hole is configured to be operated and rotated by the user to zero the pointer;

[0017] One end of the pointer departing from the scale disk is connected to the zero adjustment knob.

[0018] In a possible implementation manner, an anti-slip structure is provided on the circumferential side surface of the zero adjustment knob.

[0019] In a possible implementation manner, a mounting seat is arranged in the accommodating cavity;

[0020] One end of the torsion seat departing from its connection with the working rod is placed in the mounting seat, and the mounting seat limits the position of the torsion seat in the radial direction.

[0021] In a possible implementation manner, the scale disk and the limiting seat are arranged at both ends of the accommodating cavity in the length direction of the handle.

[0022] In a possible implementation manner, the handle includes a handle portion and a limiting cover buckled on the third end of the handle portion, and the handle portion is provided with a mounting groove along the length direction;

[0023] A part of the torsion seat extends out of the accommodating cavity, and the part of the torsion seat extending out of the accommodating cavity extends into the mounting groove, and the part of the torsion seat extending into the mounting groove is rotatably connected to the first end of the working rod;

[0024] The working rod can rotate between at least a first position and a second position. When the working rod is in the first position, the working rod is roughly perpendicular to the length direction of the handle, and the working rod and the torsion seat can rotate around the length direction of the working rod. When the working rod is in the second position, the working rod is sunk into the mounting groove, and the second end of the working rod is close to the third end of the handle, and the limit cover covers the second end of the working rod. The first end and the second end of the working rod are opposite ends of the working rod.

[0025] In a possible implementation manner, a connection structure for mounting a bit is provided at one end of the working rod away from the end connected to the torsion seat.

[0026] In a possible implementation, a storage rack is provided at the third end of the handle, the storage rack is provided with a clearance opening and at least one storage position, the storage position is configured to store and place a bit; the clearance opening is connected to the mounting groove, and when the working rod is in the second position, the second end of the working rod is placed in the clearance opening;

[0027] When the limiting cover is buckled onto the third end of the handle, the limiting cover covers at least a portion of the storage rack.

[0028] In a possible implementation, the torque wrench includes at least one bit, and the number of the bit is the same as the number of the storage positions and corresponds one to one;

[0029] In the corresponding bit and storage position, the bit is installed in the storage position.

[0030] In addition to the technical problems solved by the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the torque wrench provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0032] Figure 1 A schematic diagram of a torque wrench according to an embodiment of the present application;

[0033] Figure 2 This is a schematic diagram of the interior of the handle of an embodiment of the present application;

[0034] Figure 3 A schematic diagram of a first shell of a handle according to an embodiment of the present application;

[0035] Figure 4 Schematic diagram when the working rod of the torque wrench in the embodiment of the present application is in the first position;

[0036] Figure 5 Schematic diagram when the working rod of the torque wrench in the embodiment of the present application is in the second position;

[0037] Figure 6 Schematic diagram when the working rod of the torque wrench in the embodiment of the present application is in the second position and the limit cover is buckled;

[0038] Figure 7 Schematic diagram of the torque wrench with the limit cover removed in the embodiment of the present application;

[0039] Figure 8 Schematic diagram of the limit cover;

[0040] Figure 9 Schematic diagram of the limit cover being opened.

[0041] Explanation of reference numerals:

[0042] 100, handle;

[0043] 110, shank; 120, limit cover;

[0044] 111, installation groove; 112, third end; 113, accommodation cavity; 114, display window; 115, through hole; 116, mounting seat; 117, first housing; 118, second housing;

[0045] 1131, limit seat; 1132, scale dial;

[0046] 121, first clamping structure;

[0047] 200, working rod;

[0048] 210, connection structure;

[0049] 300, bit;

[0050] 400, storage rack;

[0051] 410, storage position; 420, relief opening; 430, sliding groove; 440, second clamping structure; 450, limit retaining wall; 460, hanging rope loop;

[0052] 500, torque detection structure;

[0053] 510, torsion seat; 520, torque detection spring piece; 530, pointer; 540, zero adjustment knob.

[0054] Through the above-mentioned accompanying drawings, specific embodiments of the present application have been shown, and more detailed descriptions will be provided hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiment

[0055] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0056] As Figure 1 、 Figure 2 and Figure 3 shown, the torque wrench provided in this embodiment includes a handle 100, a working rod 200, and a torque detection structure 500. Among them, the handle 100 is provided with a receiving cavity 113 and a display window 114. The receiving cavity 113 is internally provided with a limiting seat 1131 and a scale disk 1132. The scale disk 1132 is provided with scales and numerical values indicating torque values, and the scale disk 1132 is correspondingly arranged at the display window 114 and is displayed through the display window 114. Exemplarily, the handle 100 includes a first housing 117 and a second housing 118. The first housing 117 and the second housing 118 are snapped together, and the internal space formed after the first housing 117 and the second housing 118 are snapped together is the receiving cavity 113. The display window 114 is arranged on the first housing 117, and the limiting seat 1131 and the scale disk 1132 are arranged on the second housing 118.

[0057] In this embodiment, the torque detection structure 500 is arranged in the receiving cavity 113. The torque detection structure 500 includes a torsion seat 510, a torque detection member 520, and a pointer 530. A part of the torsion seat 510 extends out of the receiving cavity 113. The part of the torsion seat 510 extending out of the receiving cavity 113 is connected to the working rod 200, or the working rod 200 extends into the receiving cavity 113 and is connected to the torsion seat 510. The torsion seat 510 can rotate with the working rod 200. That is to say, the torsion seat 510 is connected to the working rod 200, and the rotation of the working rod 200 can drive the torsion seat 510 to rotate. In this embodiment, the working rod 200 is used to screw bolts or screws and other fasteners. Exemplarily, a connection structure 210 for installing a bit 300 is arranged at one end of the working rod 200 away from its connection with the torsion seat 510, so that this torque wrench can be applicable to bolts or screws of different models.

[0058] In this embodiment, one end of the torque detector 520 in the length direction is mounted on the torsion seat 510, and the other end is mounted on the limit seat 1131. The torque detector 520 restricts the torsion seat 510 from rotating with the working rod 200. When the torque detector 520 restricts the rotation of the torsion seat 510, it deforms. One end of the pointer 530 is connected to the torsion seat 510, and the other end extends to the dial 1132. The pointer 530 indicates the torque value of the working rod 200. That is to say, the torque detector 520 is a component that can deform under the action of an external force. The pointer 530 is connected to the torsion seat 510 and can rotate with the torsion seat 510. The rotation amount of the torsion seat 510 is the deformation amount of the torque detector 520, that is, the rotation angle of the torsion seat 510 is not large. The torque detector 520 has a length direction. In the length direction of the torque detector 520, both ends of the torque detector 520 are respectively mounted on the torsion seat 510 and the limit seat 1131, and the torque detector 520 restricts the rotation of the torsion seat 510.

[0059] When the torque wrench is used to tighten fasteners such as bolts or screws, the torque detection mechanism transmits the torque to the torsion seat 510 through the working rod 200, and then to the torque detector 520. The torque detector 520 deforms, causing the torsion seat 510 to rotate. The rotation of the torsion seat 510 is displayed by the pointer 530. The pointer 530 rotates with the torsion seat 510. As the pointer 530 rotates, it indicates the torque value of the working rod 200 on the dial 1132, thereby realizing the detection of the torque of the torque wrench. The torque wrench provided by the embodiment of the present application has a simple structure and low production cost.

[0060] Exemplarily, the torque detector 520 is a spring piece. The limit seat 1131 includes two relatively spaced limit blocks. Among the two limit blocks, at least one limit block is provided with a detachable fixing member. One end of the spring piece is placed between the two limit blocks and fixed by the fixing member. That is to say, one end of the spring piece is mounted on the torsion seat 510, and the other end is placed between the two limit blocks and fixed by the fixing member. The fixing member fixes the position of the spring piece, which can prevent the position of the spring piece from changing, making the torque value detected by the torque wrench more accurate. Secondly, the fixing member is detachable, which is convenient for the disassembly and assembly of the spring piece. When the spring piece is deformed severely after being used for a period of time, the spring piece can be replaced, so that the torque wrench can continue to be used, increasing the service life of the torque wrench. The torque detection structure 500 has a simple structure, and the spring piece can be replaced without professional personnel.

[0061] Exemplarily, the torsion seat 510 is provided with an installation opening, and the width of the installation opening is adapted to the thickness of the spring piece. One end of the spring piece is mounted in the installation opening. That is to say, the spring piece will not shake when installed in the installation opening. One end of the spring piece is directly inserted into the installation opening, and the other end is fixed in the limit seat 1131 by the fixing member. One end is directly inserted and the other end is fixed, which is convenient for the installation of the spring piece.

[0062] As Figure 1 , Figure 2 and Figure 3 shown, in order to improve the accuracy of torque detection of the torque wrench, the handle 100 is provided with at least one through hole 115 that penetrates the accommodating cavity 113 and the outer side surface of the handle 100. The torque detection structure 500 further includes a zero adjustment knob 540. The zero adjustment knob 540 is sleeved on the torsion seat 510, and the zero adjustment knob 540 is damping-connected to the torsion seat 510. At least a part of the zero adjustment knob 540 extends into the through hole 115, and the zero adjustment knob 540 exposed at the through hole 115 is configured for the user to operate and rotate to zero the pointer 530. One end of the pointer 530 facing away from the scale disk 1132 is connected to the zero adjustment knob 540. That is to say, when the pointer 530 does not point to the zero position, the pointer 530 can be zeroed by rotating the zero adjustment knob 540.

[0063] It should be noted that the damping connection between the zero adjustment knob 540 and the torsion seat 510 means that the zero adjustment knob 540 can rotate around the torsion seat 510, but it is not a rotation without resistance. When no force is applied to the zero adjustment knob 540, the zero adjustment knob 540 can rotate with the torsion seat 510. When a circumferential rotation force around the torsion seat 510 is applied to the zero adjustment knob 540, the zero adjustment knob 540 can rotate around the torsion seat 510. That is to say, when the torque wrench is in use, the torsion seat 510 can drive the zero adjustment knob 540 to rotate, and then drive the pointer 530 to move. When the user rotates the zero adjustment knob 540 for zero adjustment, the zero adjustment knob 540 can rotate around the torsion seat 510 to achieve zero adjustment.

[0064] Exemplarily, an anti-slip structure is provided on the circumferential side surface of the zero adjustment knob 540 to increase the friction force and facilitate the user's operation.

[0065] As Figure 3 shown, in some embodiments of the present application, a mounting seat 116 is provided in the accommodating cavity 113, and the end of the torsion seat 510 facing away from its connection with the working rod 200 is placed in the mounting seat 116, and the mounting seat 116 limits the position of the torsion seat 510 in the radial direction. That is to say, the setting of the mounting seat 116 enables the torsion seat 510 to only rotate around the axis of the torsion seat 510, and this setting makes the rotation of the torsion seat 510 smoother.

[0066] In some embodiments of the present application, as Figure 2 shown, the scale disk 1132 and the limit seat 1131 are provided at both ends of the accommodating cavity 113 in the length direction of the handle 100. This setting facilitates the assembly of the torque wrench and simplifies the structure of the torque wrench.

[0067] In some embodiments of the present application, as Figure 4 , Figure 5 andFigure 6 As shown, the handle 100 includes a handle portion 110 and a limit cover 120 that is snap-fitted to the third end 112 of the handle portion 110. The handle portion 110 is provided with a mounting groove 111 along the length direction.

[0068] It should be noted that in the embodiments of the present application, the limit cover 120 is snap-fitted to the third end 112 of the handle portion 110. The third end 112 refers to one of the ends of the handle portion 110 in the length direction. The third end 112 includes a section near the end, including the regions on both sides of the end. For example, the limit cover 120 can be snap-fitted to the handle portion 110, or can be snap-fitted to the storage rack 400 located on one side of the third end 112 described below. As long as it is snap-fitted to the region near the end of the third end 112 and forms the handle 100 for the user to hold together with the handle portion 110.

[0069] Please continue to refer to Figure 4 、 Figure 5 and Figure 6, a part of the torsion seat 510 extends out of the accommodation cavity 113, and the part of the torsion seat 510 extending out of the accommodation cavity 113 extends into the installation groove 111. The part of the torsion seat 510 extending into the installation groove 111 is rotatably connected to the first end of the working rod 200. The working rod 200 can at least rotate between a first position and a second position. When the working rod 200 is in the first position, the working rod 200 is substantially perpendicular to the length direction of the handle 100. The working rod 200 and the torsion seat 510 can rotate around the length direction of the working rod 200. At this time, the user can hold the handle 100 to use the torque wrench to fasten fasteners such as screws and bolts. When the working rod 200 is in the second position, the working rod 200 sinks into the installation groove 111, and the second end of the working rod 200 is close to the third end 112 of the handle portion 110. The limiting cover 120 shields the second end of the working rod 200. Among them, the first end and the second end of the working rod 200 are opposite ends of the working rod 200. That is to say, when the working rod 200 is in the second position and the limiting cover 120 is buckled on the third end 112 of the handle portion 110, the limiting cover 120 restricts the position of the working rod 200, so that the position of the working rod 200 is limited within the installation groove 111. At this time, the torque wrench is in a straight shape structure, which is convenient for storage and carrying. When using the torque wrench, open the limiting cover 120. The limiting cover 120 no longer shields the second end of the working rod 200, that is, no longer restricts the position of the working rod 200. The limiting rod can rotate from the second position to the first position, that is, from the storage state to the use state. That is to say, when using the torque wrench, open the limiting cover 120, so that the working rod 200 rotates from the second position to the first position. When the working rod 200 rotates to the first position, the user can re-buckle the limiting cover 120 onto the handle portion 110 to form the handle 100, which is convenient for the user to operate; after use, the working rod 200 rotates from the first position to the second position, and the limiting cover 120 is buckled to restrict the position of the working rod 200. If the limiting cover 120 is buckled on the handle portion 110, first open the limiting cover 120, then rotate the working rod 200 to the second position, and then buckle the limiting cover 120. This setting makes the torque wrench in a T-shaped structure or an L-shaped structure when in use, which is convenient for the user to hold and apply force, and in a straight shape structure when in storage, which is convenient for the user to store and carry.

[0070] It should be noted that "substantially perpendicular" means that the length direction of the working rod 200 and the handle 100 is in a perpendicular state in an ideal situation, but it is sufficient that the length direction between the working rod 200 and the handle 100 is close to perpendicular. Exemplarily, the angle between the length direction of the working rod 200 and the handle 100 is 89°, or 91°, etc.

[0071] In addition, the fact that the working rod 200 can at least rotate between a first position and a second position means that in addition to rotating between the first position and the second position, the working rod 200 can also rotate to other positions, which are not specifically limited herein. Exemplarily, the installation groove 111 extends to both ends of the handle portion 110 in the length direction, and the torsion seat 510 protrudes from the middle of the installation groove 111 in the length direction. At this time, the working rod 200 can rotate from the first position to the second position, or can also rotate from the first position to the end of the handle portion 110 away from the third end 112. At this time, a limit cover 120 can also be provided at the end of the handle portion 110 away from the third end 112 to limit the position of the working rod 200 when it rotates to the end of the handle portion 110 away from the third end 112. Of course, the installation groove 111 can only extend to the third end 112 of the handle portion 110, that is, the working rod 200 can only rotate between the first position and the second position.

[0072] As Figure 5 、 Figure 7 shown, a storage rack 400 is provided at the third end 112 of the handle portion 110. The storage rack 400 is provided with a relief opening 420 and at least one storage position 410. The storage position 410 is configured to store and place the bit 300. The relief opening 420 communicates with the installation groove 111. When the working rod 200 is in the second position, the second end of the working rod 200 is placed in the relief opening 420. When the limit cover 120 is buckled on the third end 112 of the handle portion 110, the limit cover 120 covers at least part of the storage rack 400. The provision of the storage rack 400 enables the torque wrench to store some bits 300, which is convenient for the user to use. When in use, the user can remove the bit 300 from the storage rack 400 and install it on the connection structure 210 of the working rod 200. This setting enables the user not to need to find an extra place to store the bit 300, increasing the convenience of the user using the tool.

[0073] Exemplarily, as Figure 5 、 Figure 6 and Figure 8 shown, the limit cover 120 has a structure with openings at both ends. The limit cover 120 is slidably sleeved on the storage rack 400. A hanging rope loop 460 is provided at the end of the storage rack 400 away from the handle portion 110. When the limit cover 120 is buckled on the third end 112 of the handle portion 110, the hanging rope loop 460 is exposed from the limit cover 120. This setting enables the user to hang the torque wrench up, or hang it on the waist, etc.

[0074] In some embodiments of the present application, as Figure 5 、 Figure 7 and Figure 8 shown, a first clamping structure 121 is provided on the storage rack 400, and a second clamping structure 440 is provided on the inner side surface of the limit cover 120. At least part of the second clamping structure 440 cooperates with the first clamping structure 121 to clamp and position the limit cover 120 and the storage rack 400.

[0075] For example, Figure 5 , Figure 7 , Figure 8 and Figure 9 As shown, the storage rack 400 is provided with a plurality of slide grooves 430 along the length direction of the handle 100, at least part of the slide grooves 430 is provided with a first clamping protrusion on the side close to the handle 110, each first clamping protrusion forms a first clamping structure 121, and the side wall of the slide groove 430 at one end away from the handle 110 is a limit stop wall 450. The inner side surface of the limit cover 120 is provided with a second clamping protrusion corresponding to each slide groove 430, and each second clamping protrusion forms a second clamping structure 440. The second clamping protrusion can slide in the corresponding slide groove 430, and the second clamping protrusion slides in the direction close to the handle 110, and in the slide groove 430 with the first clamping protrusion, when the second clamping protrusion slides over the first clamping protrusion, the limit cover 120 buckles and covers the third end 112 of the handle 110. When the second clamping protrusion slides to the limit stop wall 450, the limit stop wall 450 prevents the second clamping protrusion from continuing to slide. That is to say, the slide groove 430 guides the limit cover 120 on the one hand so that the limit cover 120 can slide back and forth in the length direction of the slide groove 430, and on the other hand limits the position of the limit cover 120 so that the limit cover 120 can only slide along the length direction of the slide groove 430, and the limit stop wall 450 limits the limit cover 120 from sliding out of the storage rack 400. This setting can prevent the limit cover 120 from being lost or spending a lot of time to find due to misplacement after being removed.

[0076] In this embodiment, there are multiple storage positions 410, and the multiple storage positions 410 are arranged at intervals in the length direction of the handle 100, and the length direction of the screw bits 300 stored in each storage position 410 is the same as the length direction of the handle 100. When the limit cover 120 slides to the limit stop wall 450 to block the second clamping protrusion, the limit cover 120 does not cover the screw bits 300 installed in the storage position 410. The provision of multiple storage positions 410 enables the torque wrench to store more screw bits 300, so that the torque wrench can tighten more types of bolts and screws, has a wider range of applications, and is convenient for users to use. When the limit cover 120 slides to the limit stop wall 450 to block the second clamping protrusion, the limit cover 120 does not cover the screw bits 300 installed in the storage position 410, which is convenient for users to take and put the screw bits 300.

[0077] Exemplarily, a magnetic attraction component is provided in the storage rack 400 corresponding to each storage position 410 , and the magnetic attraction component is used to attract the bit 300 .

[0078] In some embodiments of the present application, Figure 5 As shown, the torque wrench includes at least one bit 300 , the number of the bits 300 is the same as the number of the storage positions 410 , and they correspond one to one. In the corresponding bits 300 and storage positions 410 , the bits 300 are installed in the storage positions 410 .

[0079] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0080] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A torque wrench, characterized in that: It includes a handle, a working rod and a torque detection structure; The handle is provided with a containing cavity and a display window, the containing cavity is provided with a limit seat and a dial, the dial is provided with a scale and a value for marking the torque value, the dial is correspondingly provided at the display window, and is displayed through the display window; The torque detection structure is arranged in the accommodating cavity, and the torque detection structure includes a torsion seat, a torque detection member and a pointer; part of the torsion seat extends out of the accommodating cavity, and the torsion seat part extending out of the accommodating cavity is connected to the working rod, or the working rod extends into the accommodating cavity and is connected to the torsion seat, and the torsion seat can rotate with the working rod; one end of the torque detection member in the length direction is installed on the torsion seat, and the other end is installed on the limit seat, the torque detection member limits the torsion seat to rotate with the working rod, and the torque detection member is deformed when limiting the rotation of the torsion seat; one end of the pointer is connected to the torsion seat, and the other end extends to the dial, and the pointer indicates the torque value of the working rod.

2. The torque wrench according to claim 1, characterized in that: The torque detection member is a spring piece; The limiting seat comprises two limiting blocks which are arranged opposite to each other and at intervals, and at least one of the two limiting blocks is provided with a detachable fixing member; One end of the spring sheet is placed between the two limit blocks and is fixed by the fixing member.

3. The torque wrench according to claim 2, characterized in that: The torsion seat is provided with a mounting opening, and the width of the mounting opening is adapted to the thickness of the spring sheet; One end of the spring is installed in the installation opening.

4. The torque wrench according to claim 1, characterized in that: The handle is provided with at least one through opening, and the through opening passes through the accommodating cavity and the outer side surface of the handle; The torque detection structure further includes a zero adjustment knob, which is sleeved on the torsion seat and connected to the torsion seat in a damping manner; a portion of the zero adjustment knob at least extends into the through-hole, and the zero adjustment knob exposed to the through-hole is configured to be operated and rotated by a user to adjust the pointer to zero; The end of the pointer facing away from the scale plate is connected to the zero adjustment knob.

5. The torque wrench according to claim 1, characterized in that: A mounting seat is provided in the accommodating cavity; The end of the torsion seat which is away from the end connected with the working rod is placed in the mounting seat, and the mounting seat limits the radial position of the torsion seat.

6. The torque wrench according to claim 1, characterized in that: The scale plate and the limit seat are arranged at two ends of the accommodating cavity in the length direction of the handle.

7. The torque wrench according to any one of claims 1 to 6, characterized in that: The handle comprises a handle portion and a limit cover buckled on the third end of the handle portion, and the handle portion is provided with a mounting groove along the length direction; A portion of the twist seat extends out of the accommodating cavity, and the twist seat portion extending out of the accommodating cavity extends into the mounting groove, and the twist seat portion extending into the mounting groove is rotatably connected to the first end of the working rod; The working rod can rotate between at least a first position and a second position. When the working rod is in the first position, the working rod is roughly perpendicular to the length direction of the handle, and the working rod and the torsion seat can rotate around the length direction of the working rod. When the working rod is in the second position, the working rod is sunk into the mounting groove, and the second end of the working rod is close to the third end of the handle, and the limit cover covers the second end of the working rod. The first end and the second end of the working rod are opposite ends of the working rod.

8. The torque wrench according to claim 7, characterized in that: The end of the working rod away from the end connected with the twisting seat is provided with a connecting structure for mounting a bit.

9. The torque wrench according to claim 8, characterized in that: The third end of the handle is provided with a storage rack, the storage rack is provided with a clearance opening and at least one storage position, the storage position is configured to store and place a batch head; the clearance opening is connected with the installation groove, and when the working rod is in the second position, the second end of the working rod is placed in the clearance opening; When the limiting cover is buckled onto the third end of the handle, the limiting cover covers at least a portion of the storage rack.

10. The torque wrench according to claim 9, characterized in that: The torque wrench comprises at least one bit, and the number of the bit is the same as the number of the storage positions and corresponds one to one; In the corresponding bit and storage position, the bit is installed in the storage position.

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