Torque wrench

Abstract

The utility model relates to the technical field of torque wrenches, and discloses a torque wrench which comprises a grip and a connecting piece, a screw is arranged on the connecting end face of the connecting piece and the grip, the connecting piece and the grip are connected through the screw, the connecting piece is connected with a connector, a hand pushing part is arranged at the top of the connecting piece, and a handle is arranged on the handle. The hand pushing part is connected with a clamping block in the connecting piece through a connecting rod, a sleeve is installed on the connecting head, a plurality of fixing blocks are arranged in the sleeve, the fixing block on the outermost side is fixedly connected with the sleeve, and a sliding groove is formed in the fixing block on the outer side of the matched position of the two fixing blocks. And moving pieces are arranged at the matched positions of the inner side fixing blocks and the sliding grooves of the outer side fixing blocks, and a cover plate is arranged at the tops of the fixing blocks. Through the design of the connecting piece and the connecting head, the connecting length of the connecting piece and the connecting head can be adjusted, it is ensured that the set moment arm length is kept after the torque wrench and the grip are connected, and torque deviation caused by moment arm change due to wrench replacement is avoided.

Description

Technical Field

[0001] This utility model relates to the field of torque wrench technology, specifically a torque wrench. Background Technology

[0002] Torque wrenches are indispensable tools in industrial production and automotive repair, with a wide range of applications. They are specifically designed for tightening bolts and nuts, ensuring that tightening operations meet stringent specifications by precisely controlling the applied torque.

[0003] However, in practical applications, common torque wrenches often require frequent changes of different models when dealing with bolts of different sizes. For example, different sized nuts may require different sized wrenches, necessitating the availability of multiple torque wrenches. At the same time, confined spaces often limit wrench usage; even if a smaller wrench can be used, the change in lever arm can lead to inaccurate torque. Specifically, a longer lever arm results in a lower actual torque, while a shorter lever arm results in a higher torque, affecting tightening accuracy. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides a torque wrench with the advantages of strong adaptability, which solves the problem of poor adaptability.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goal of high adaptability, this utility model provides the following technical solution:

[0008] A torque wrench includes a handle and a connector. A screw is provided on the end face of the connector and the handle, and the connector and the handle are connected by the screw. The connector is connected to a connector head. A push-hand part is provided on the top of the connector. The push-hand part is connected to a locking block inside the connector via a connecting rod. A sleeve is installed on the connector head. Multiple fixing blocks are provided inside the sleeve. The outermost fixing block is fixedly connected to the sleeve. A sliding groove is provided inside the outer fixing block where two fixing blocks mate. A moving part is provided at the sliding groove where the inner fixing block mates with the outer fixing block. A cover plate is provided on the top of the fixing block.

[0009] As a preferred embodiment of this utility model, the screw is installed at the center of the connector and the grip mating end, the opposite side of the screw mounting end face of the connector is provided with a square hole for mating with the connector head, and the top of the connector is provided with a sliding groove for mating with the connecting rod.

[0010] As a preferred embodiment of this utility model, the connector and the sleeve are provided with a through hole that mates with the sleeve, the connecting rod is installed at the middle position of the top of the locking block, and the locking block is trapezoidal. The top of the connector and the connecting piece is provided with a trapezoidal groove that mates with the locking block.

[0011] As a preferred embodiment of this utility model, the cover plate is installed at the top of the groove of the fixing block, the fixing block and the cover plate are provided with a hole that mates with the cover plate, and the top surface of the cover plate after installation is flush with the top surface of the fixing block. The cover plate is provided with a through hole that mates with the fastening bolt, and the fixing block is provided with a threaded hole that mates with the fastening bolt.

[0012] As a preferred embodiment of this utility model, the rear ends of the connector, sleeve, and multiple fixing blocks are all provided with round holes, the fixing shaft is installed inside the round holes, the connector and the fixing shaft are provided with threaded holes at the joints, and the sleeve and the fixing blocks are provided with through holes at the joints.

[0013] As a preferred embodiment of this utility model, the sliding groove and the moving part provided on the fixed block are both T-shaped, and the two ends of the moving part are slidably connected to the sliding groove. The connection between the fixed block and the moving part is stepped, and the top of the stepped part is rounded.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a torque wrench with the following advantages:

[0016] This torque wrench, through the design of its socket, fixed block, and moving part, and the cooperation of components such as the sliding groove, moving part, fixed shaft, and fixed block, achieves convenient adaptation to bolts of different sizes. During operation, first, the fixed shaft is pulled out, and then the fixed block is placed at the top of the designated nut. Downward pressure is applied and the fixed block is rotated to align it with the nut. For mismatched fixed blocks, resistance will be encountered during sliding; this is overcome by the cooperation of the moving part and the sliding groove, thus smoothly adapting to different nut sizes without frequent torque wrench changes. The design of the connecting part and connector allows for the release of the bottom locking block from the connector by dragging the push part at the top of the connecting part. The connection length between the connecting part and the connector can then be adjusted to ensure that the torque wrench maintains the set lever arm length after being connected to the handle. Subsequent pushes of the push part engage the locking block with the connector to prevent movement, thus avoiding torque deviations caused by lever arm changes when changing wrenches. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structural connector of this utility model;

[0019] Figure 3 This is a cross-sectional view of the connection between the structural connector and the connector of this utility model;

[0020] Figure 4 This is a cross-sectional view showing the connection of the connector, sleeve, fixing block, and fixing shaft of this utility model.

[0021] Figure 5 This is an exploded view showing the connection between the structural sleeve and the fixing block of this utility model.

[0022] In the diagram: 1. Handle; 2. Connector; 3. Connector head; 4. Sleeve; 5. Fixing block; 6. Fixing shaft; 7. Moving part; 8. Cover plate; 9. Fastening bolt; 10. Push part; 11. Connecting rod; 12. Clamping block; 13. Screw. Detailed Implementation

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

[0024] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1-5 ,

[0027] A torque wrench includes a handle 1 and a connector 2. A screw 13 is provided on the connecting end face of the connector 2 and the handle 1, and the connector 2 and the handle 1 are connected by the screw 13. The connector 2 is connected to a connector 3. A push part 10 is provided on the top of the connector 2. The push part 10 is connected to a locking block 12 inside the connector 2 through a connecting rod 11. A sleeve 4 is installed on the connector 3. Multiple fixing blocks 5 are provided inside the sleeve 4. The outermost fixing block 5 is fixedly connected to the sleeve 4. The outer fixing block 5 at the mating point of two fixing blocks 5 is provided with a sliding groove. A moving part 7 is provided at the mating point of the inner fixing block 5 and the outer fixing block 5 sliding groove. A cover plate 8 is provided on the top of the fixing block 5.

[0028] In this example, the screw 13 is installed at the center of the mating end of the connector 2 and the handle 1. The opposite side of the mounting end face of the screw 13 of the connector 2 is provided with a square hole that mates with the connector head 3. The top of the connector 2 is provided with a sliding groove that mates with the connecting rod 11.

[0029] It should be noted that the arrangement of the screw 13 installation position helps to maintain the symmetry and stability of the force during torque transmission, ensuring that the torque is evenly transmitted to the handle 1. The square hole provides a firm connection, which helps to ensure the stability between the connector 3 and the connector 2, especially when the torque requirement is high, and prevents loosening.

[0030] In this example, the connector 3 and the sleeve 4 are provided with a through hole that mates with the sleeve 4. The connecting rod 11 is installed at the middle position of the top of the locking block 12, and the locking block 12 is trapezoidal. The top of the connector 3 and the connector 2 is provided with a trapezoidal groove that mates with the locking block 12.

[0031] It should be noted that the through-hole design allows the connector 3 to be firmly inserted into the sleeve 4, thereby ensuring a stable connection when transmitting torque. The trapezoidal design allows the locking block 12 to enter the slide groove more accurately during the mating process, reducing the possibility of slippage or loosening and improving the durability and safety of the entire device.

[0032] In this example, the cover plate 8 is installed at the top of the groove of the fixing block 5. The fixing block 5 and the cover plate 8 are provided with a hole that mates with the cover plate 8. The top surface of the cover plate 8 after installation is flush with the top surface of the fixing block 5. The cover plate 8 is provided with a through hole that mates with the fastening bolt 9, and the fixing block 5 is provided with a threaded hole that mates with the fastening bolt 9.

[0033] It should be noted that the top surface of the cover plate 8 is flush with the top surface of the fixing block 5, maintaining the overall flatness and aesthetics, preventing the cover plate 8 from protruding and causing interference or scratches. The through-hole design facilitates the installation and removal of bolts, allowing the cover plate 8 to be fastened to the fixing block 5, and also making it easy to replace or maintain the cover plate 8.

[0034] In this example, the rear ends of the connector 3, sleeve 4 and multiple fixing blocks 5 are all provided with round holes, the fixing shaft 6 is installed inside the round holes, the joint between the connector 3 and the fixing shaft 6 is provided with a threaded hole, and the joint between the sleeve 4 and the fixing blocks 5 and the fixing shaft 6 is provided with a through hole.

[0035] It should be noted that the design of the circular holes ensures the precise positioning of these components in the structure and connects them through the fixed shaft 6 to form a stable whole. Through the through-mounting of the fixed shaft 6, the entire assembly forms a unified structure, which helps to ensure the firmness of the connection and reduces the risk of loosening of the components during non-operation.

[0036] In this example, the sliding groove and the movable part 7 provided on the fixed block 5 are both T-shaped, and the two ends of the movable part 7 are slidably connected to the sliding groove. The connection between the fixed block 5 and the movable part 7 is set in a stepped shape, and the top of the stepped shape is set in a rounded corner.

[0037] It should be noted that the T-shaped structure restricts the vertical displacement of the moving part 7, allowing it to slide only along the direction of the slide groove, thereby enhancing the accuracy and safety of the structure. The stepped design also serves as a layered guide, keeping the moving part 7 stable when sliding in the slide groove, while preventing deviation in the horizontal or vertical direction.

[0038] In summary: When using this torque wrench, first place the socket 4 and the fixing block 5 directly above the nut, then pull out the fixing shaft 6. The operator manually applies downward pressure, causing the socket 4 and the fixing block 5 to move downwards together. During this movement, any mismatched fixing blocks 5 will be pushed upwards by the bolt. Using the moving part 7 and the sliding groove design on the fixing blocks 5, the mismatched fixing blocks 5 will slide upwards until the appropriate fixing block 5 securely engages the bolt. This design avoids the hassle of repeatedly changing torque wrenches according to the bolt size. When entering confined spaces, there is no need to change the torque wrench; the operator only needs to push the push part 10 on the connector 2 to adjust the length between the connector 3 and the connector 2 as needed, thereby lengthening or shortening the lever arm. This design not only improves the tool's adaptability but also ensures torque accuracy in confined spaces.

[0039] Beneficial effects:

[0040] This torque wrench, through the design of its socket, fixed block, and moving part, and the cooperation of components such as the sliding groove, moving part, fixed shaft, and fixed block, achieves convenient adaptation to bolts of different sizes. During operation, first, the fixed shaft is pulled out, and then the fixed block is placed at the top of the designated nut. Downward pressure is applied and the fixed block is rotated to align it with the nut. For mismatched fixed blocks, resistance will be encountered during sliding; this is overcome by the cooperation of the moving part and the sliding groove, thus smoothly adapting to different nut sizes without frequent torque wrench changes. The design of the connecting part and connector allows for the release of the bottom locking block from the connector by dragging the push part at the top of the connecting part. The connection length between the connecting part and the connector can then be adjusted to ensure that the torque wrench maintains the set lever arm length after being connected to the handle. Subsequent pushes of the push part engage the locking block with the connector to prevent movement, thus avoiding torque deviations caused by lever arm changes when changing wrenches.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A torque wrench, comprising a handle and a connector, characterized in that: A screw is provided on the connecting end face of the connector and the handle, and the connector and the handle are connected by the screw; The connector is connected to the connector head, and the top of the connector is provided with a push-hand part, which is connected to the locking block inside the connector through a connecting rod; A sleeve is installed on the connector head, and multiple fixing blocks are provided inside the sleeve. The outermost fixing block is fixedly connected to the sleeve. The fixing block on the outside of the two fixing blocks is provided with a sliding groove, and a moving part is provided at the sliding groove of the inner fixing block and the outer fixing block. A cover plate is provided on the top of the fixing block.

2. A torque wrench according to claim 1, characterized in that: The screw is installed at the center of the connector and the grip mating end. The opposite side of the screw mounting end face of the connector is provided with a square hole for mating with the connector head. The top of the connector is provided with a sliding groove for mating with the connecting rod.

3. A torque wrench according to claim 1, characterized in that: The connector and the sleeve have a through hole that mates with the sleeve. The connecting rod is installed at the middle position on the top of the clamping block, and the clamping block is trapezoidal. The top of the connector and the connecting piece has a trapezoidal groove that mates with the clamping block.

4. A torque wrench according to claim 1, characterized in that: The cover plate is installed at the top of the groove of the fixing block. The fixing block and the cover plate are provided with a hole that mates with the cover plate. The top surface of the cover plate after installation is flush with the top surface of the fixing block. The cover plate is provided with a through hole that mates with the fastening bolt, and the fixing block is provided with a threaded hole that mates with the fastening bolt.

5. A torque wrench according to claim 1, characterized in that: The rear ends of the connector, sleeve, and multiple fixing blocks are all provided with round holes, and the fixing shaft is installed inside the round holes. The connection between the connector and the fixing shaft is provided with a threaded hole, and the connection between the sleeve and the fixing block and the fixing shaft is provided with a through hole.

6. A torque wrench according to claim 1, characterized in that: The sliding groove and the moving part provided on the fixed block are both T-shaped, and the two ends of the moving part are slidably connected to the sliding groove. The connection between the fixed block and the moving part is stepped, and the top of the stepped part is rounded.

Images