Torque wrench with adjustable length

Abstract

The utility model discloses a length-adjustable torque wrench, and relates to the technical field of torque wrenchs.The length-adjustable torque wrench comprises a connecting pipe body, a matching part is arranged at one end of the connecting pipe body, an adjusting pipe is arranged on one side of the connecting pipe body, a grip is fixedly arranged at one end of the adjusting pipe, a penetrating through groove is formed in one end of the adjusting pipe, and a through hole is formed in the other end of the adjusting pipe; an output column is slidably arranged in the through groove, a rotating disc is rotatably arranged on one side of the outer surface of the adjusting pipe, and a rotating rod is fixedly arranged at the lower end of the rotating disc. According to the torque wrench with the adjustable length, the overall length of the wrench can be adjusted, the length can be adjusted according to conditions, and the torque wrench is convenient to use. Therefore, the labor-saving degree when the wrench is used for different bolts is improved, pins of different sizes are directly stored in the grip, the problem that the pins are prone to being lost is effectively solved, the pins do not need to be stored in a box body, the occupied space is smaller, the pins are convenient to take out, and using convenience is higher.

Description

Technical Field

[0001] This application relates to the technical field of torque wrenches, and particularly to a torque wrench with adjustable length. Background Art

[0002] A torque wrench is a tool that can set the torque value when tightening bolts and nuts. When using a torque wrench, it is necessary to correctly set the torque value according to specific requirements and use and calibrate it in accordance with the operating specifications to ensure its accuracy and reliability. For example, during the assembly process of an automotive engine, a torque wrench is used to tighten the bolts at key positions to ensure the performance and safety of the engine.

[0003] After checking the publication number: CN 219582725 U, a torque wrench is disclosed. In this technology, it is disclosed that "it includes a handle, a force-limiting component, and a chuck. The force-limiting component includes a fixed cam, a moving cam, and an elastic member. The fixed cam is rotatably connected to the handle, and a first cam surface is provided on one end surface of the fixed cam; the moving cam is slidably connected to the handle, the moving cam can rotate with the handle, a second cam surface that cooperates with the first cam surface is provided on the end surface of the moving cam facing the fixed cam, the central axis of the moving cam coincides with the central axis of the fixed cam, and the slidable direction of the moving cam is parallel to the central axis of the fixed cam; the opposite ends of the elastic member respectively abut against the end surface of the moving cam facing away from the fixed cam and the handle, and the telescopic direction of the elastic member is parallel to the slidable direction of the moving cam; the chuck is located outside the handle and is connected to the fixed cam to rotate with the fixed cam, and at least one clamping opening for clamping the workpiece is provided on the chuck" and other technical solutions, which have the technical effect of limiting the torque output to the chuck through the force-limiting component during the screwing process to avoid damaging the workpiece due to excessive torque.

[0004] Regarding the above related technology, the inventor believes that the above torque wrench is not convenient for length adjustment. Since the positions of bolts and nuts are different, the operating space at some positions is small. At this time, if the wrench is too long, it may affect the use, and if the wrench is too short, it may be more laborious. The fixed length limits the use of the wrench. Moreover, the pins supporting most torque wrenches are easily lost. Most pins are stored in a specific box. When the wrench is in use, the box is usually placed aside. If the pins can be placed inside the wrench for storage, the probability of their loss can be greatly reduced. Therefore, a torque wrench with adjustable length is needed to solve the above problems. Summary of the Utility Model

[0005] The purpose of this application is to provide a torque wrench with adjustable length to improve the problems of inconvenient length adjustment and easy loss of pins.

[0006] A torque wrench with adjustable length provided by this application adopts the following technical solutions:

[0007] A torque wrench with adjustable length, comprising a connecting pipe body, one end of the connecting pipe body is provided with a fitting, one side of the connecting pipe body is provided with an adjusting pipe, one end of the adjusting pipe is fixedly provided with a handle, one end of the adjusting pipe is provided with a through groove, an output column is slidably arranged in the through groove, a turntable is rotatably arranged on one side of the outer surface of the adjusting pipe, a rotating rod is fixedly arranged at the lower end of the turntable, the lower end of the rotating rod penetrates through the adjusting pipe and is fixedly connected with a gear, the outer surface of the gear is meshed and connected with a toothed plate, one end of the toothed plate is fixedly connected with the output column, and the output column is fixedly connected with the connecting pipe body.

[0008] By adopting the above technical solution, the length can be adjusted according to the situation, thereby improving the labor-saving degree when using the wrench for different bolts.

[0009] Optionally, a limiting ring is fixedly arranged at one end of the adjusting pipe, and the inner wall of the limiting ring is in movable contact with the outer surface of the output column.

[0010] By adopting the above technical solution, the limiting ring can improve the stability of the output column movement.

[0011] Optionally, a breaking groove is arranged at one end of the limiting ring, and the breaking groove is used in cooperation with the toothed plate.

[0012] By adopting the above technical solution, the breaking groove can cooperate with the movement of the toothed plate.

[0013] Optionally, a plate groove for using in cooperation with the toothed plate is arranged on the inner wall of the adjusting pipe.

[0014] By adopting the above technical solution, the stability during length adjustment is further improved.

[0015] Optionally, a placement groove is arranged at the outer end of the handle, a placement piece is slidably arranged on the inner wall of the placement groove, a pull handle is fixedly arranged at the outer end of the placement piece, fixing blocks are fixedly arranged at both ends of the placement piece, block grooves for using in cooperation with the fixing blocks are arranged on both sides of the outer end of the handle, the fixing blocks and the handle are connected in cooperation through bolts, four protection grooves are arranged at the upper end of the placement piece, mounting pieces are placed in all four protection grooves, and protection covers are arranged at the upper ends of the protection grooves.

[0016] By adopting the above technical solution, the pins are directly stored in the handle, effectively solving the problem that the pins are easy to lose.

[0017] Optionally, two limiting rods are fixedly arranged on one side inner wall of the placement groove, and limiting grooves for using in cooperation with the limiting rods are arranged on both sides of one end of the placement piece.

[0018] By adopting the above technical solution, the moving effect of the placement piece is improved.

[0019] Optionally, pins are provided at the upper ends of the four mounting members, and the sizes of the four pins increase sequentially from inside to outside.

[0020] By adopting the above technical solution, it can cooperate with most bolts.

[0021] Optionally, a mating groove is formed at the upper end of the mating member, and the lower end of the mounting member has the same size as the mating groove.

[0022] By adopting the above technical solution, the installation of the mounting member is facilitated.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By the extension or retraction of the output column, the overall length adjustment of the wrench is completed, and the length can be adjusted according to the situation, thereby improving the labor-saving degree when using the wrench for different bolts;

[0025] 2. By directly storing pins of different sizes in the grip, the problem that the pins are easily lost is effectively solved, and the pins do not require a box for storage, occupying less space, being convenient to take out, and having higher convenience in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present application.

[0027] Figure 2 is a schematic structural diagram of the present application from another perspective.

[0028] Figure 3 is a schematic cross-sectional view of the adjusting tube structure of the present application.

[0029] Figure 4 is a schematic cross-sectional view of the grip structure of the present application.

[0030] In the figure, 1, connecting pipe body; 11, mating member; 12, mating groove; 2, adjusting tube; 21, turntable; 22, through groove; 23, output column; 24, rotating rod; 25, gear; 26, toothed plate; 27, plate groove; 28, limiting ring; 29, breaking groove; 3, grip; 31, placing groove; 32, placing member; 33, limiting rod; 34, limiting groove; 35, handle; 36, fixing block; 37, protection groove; 38, mounting member; 39, protection cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will be described in further detail with reference to the accompanying Figure 1 - accompanying Figure 4 drawings of the present application.

[0032] Embodiment 1

[0033] A torque wrench with adjustable length, referring toFigure 1-2 , including a connecting tube body 1, an adjusting tube 2 and a handle 3. A fitting 11 is provided on one side of the connecting tube body 1. The end of the connecting tube body facing away from the fitting 11 is welded to the adjusting tube 2, and the handle 3 is welded and fixedly connected to the adjusting tube 2. The connecting tube body 1 serves as the main body of the torque wrench. A suitable pin is installed through the fitting 11 on one side to tighten the bolt. The adjusting tube 2 can adjust the overall length of the wrench. The handle 3 is convenient for holding, and the pin can be stored in the handle 3.

[0034] Reference Figure 3 A meshing gear 25 and a toothed plate 26 are provided in the adjusting tube 2. An output column 23 is fixed at one end of the toothed plate 26, and the output column 23 is in active contact with the inner wall of the through slot 22 on the adjusting tube 2. The upper end of the gear 25 is connected to the turntable 21 through a rotating rod 24. The turntable 21 is located on the outside of the adjusting tube 2. When the length of the wrench needs to be adjusted, the turntable 21 is rotated, and the gear 25 is driven to rotate by the rotation of the rotating rod 24. The gear 25 rotates to drive the toothed plate 26 to move. The toothed plate 26 moves to drive the output column 23 to extend or retract from the through slot 22, thereby completing the overall length adjustment of the wrench. The length can be adjusted according to the situation, thereby improving the effort saving when using the wrench for different bolts.

[0035] Reference Figure 3 A limiting ring 28 is welded at one end of the regulating tube 2, and one side of the limiting ring 28 is disconnected to form a broken groove 29. The limiting ring 28 can improve the stability of the movement of the output column 23, and the broken groove 29 can cooperate with the movement of the tooth plate 26.

[0036] Reference Figure 3 A plate groove 27 is provided on the through groove 22, and the plate groove 27 can slide with the tooth plate 26 to further improve the stability during length adjustment.

[0037] The implementation principle of the embodiment of the present application is as follows: the connecting tube body 1 is used as the main body of the torque wrench, and a suitable pin is installed through a matching piece 11 on one side to tighten the bolt, the adjusting tube 2 can adjust the overall length of the wrench, the grip 3 is convenient for holding, and the pin can be stored in the grip 3;

[0038] When the length of the wrench needs to be adjusted, the turntable 21 is rotated, and the rotation of the rotating rod 24 drives the gear 25 to rotate, and the gear 25 rotates to drive the toothed plate 26 to move, and the movement of the toothed plate 26 drives the output column 23 to extend from or retract into the through slot 22, thereby completing the overall length adjustment of the wrench;

[0039] The limiting ring 28 can improve the stability of the movement of the output column 23, and the broken groove 29 can cooperate with the movement of the tooth plate 26;

[0040] The plate groove 27 can slide in cooperation with the tooth plate 26 to further improve the stability during length adjustment.

[0041] Example 2

[0042] The difference between this embodiment and Embodiment 1 lies in that:

[0043] Referring to Figure 4 , one end of the grip 3 is movably inserted with a placement member 32. One end of the placement member 32 is provided with a handle 35 and two fixing blocks 36. The fixing blocks 36 are placed in the block grooves on the grip 3 and fixed by bolts, so that the fixed installation of the placement member 32 can be completed. The placement member 32 slides in the placement groove 31. The mounting member 38 is provided with pins of unspecified specifications, and the mounting member 38 is stored in a protection groove 37 opened on the placement member 32. A protection cover 39 is placed on the upper side of the inner wall of the protection groove 37. The grip 3 is convenient to hold, and the pins are stored in the grip 3. When in use, only need to rotate and remove the bolts on the fixing block 36, and then pull the handle 35 to move the placement member 32 out of the placement groove 31, remove the protection cover 39, and select a suitable mounting member 38 in the protection groove 37 for installation. The mounting member 38 is provided with pins of different sizes and can be used in cooperation with most bolts. The protection cover 39 can further protect the stored mounting member 38 and pins. The pins are directly stored in the grip 3, effectively solving the problem that the pins are easy to lose. Moreover, the pins do not need a box for storage, occupying less space, being convenient to take out, and having higher convenience in use.

[0044] Referring to Figure 4 , two through limit grooves 34 are opened at one end of the placement member 32. A limit rod 33 is movably contacted in the limit grooves 34, and the limit rod 33 is welded and fixed on the inner wall of the placement groove 31. When the placement member 32 moves, the limit rod 33 moves in the limit grooves 34, improving the moving effect of the placement member 32.

[0045] Referring to Figure 4 , the lower outer surface of the mounting member 38 is corrugated. A mating groove 12 is opened on the mating member 11, and the inner wall of the mating groove 12 is provided with the same corrugation as the lower surface of the mounting member 38. The mounting member 38 can be installed in the mating groove 12, improving the convenience of using the torque wrench.

[0046] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A torque wrench with adjustable length, comprising a connecting pipe body (1), characterized in that: One end of the connecting pipe body (1) is provided with a fitting (11). One side of the connecting pipe body (1) is provided with an adjusting pipe (2). One end of the adjusting pipe (2) is fixedly provided with a handle (3). One end of the adjusting pipe (2) is provided with a through groove (22). An output column (23) is slidably arranged in the through groove (22). One side of the outer surface of the adjusting pipe (2) is rotatably provided with a turntable (21). The lower end of the turntable (21) is fixedly provided with a rotating rod (24). The lower end of the rotating rod (24) penetrates through the adjusting pipe (2) and is fixedly connected with a gear (25). The outer surface of the gear (25) is meshed with a toothed plate (26). One end of the toothed plate (26) is fixedly connected with the output column (23). The output column (23) is fixedly connected with the connecting pipe body (1).

2. The torque wrench with adjustable length according to claim 1, wherein: An outer end of the handle (3) is provided with a placement groove (31). A placement member (32) is slidably arranged on the inner wall of the placement groove (31). An outer end of the placement member (32) is fixedly provided with a handle (35). Both ends of the placement member (32) are fixedly provided with fixing blocks (36). Block grooves for using with the fixing blocks (36) are respectively arranged on both sides of the outer end of the handle (3). The fixing blocks (36) and the handle (3) are connected by bolts in a matching manner. Four protection grooves (37) are arranged on the upper end of the placement member (32). Mounting members (38) are respectively arranged in the four protection grooves (37). A protection cover (39) is arranged at the upper end of the protection groove (37).

3. The adjustable-length torque wrench according to claim 1, wherein: One end of the adjusting pipe (2) is fixedly provided with a limiting ring (28). The inner wall of the limiting ring (28) is in movable contact with the outer surface of the output column (23).

4. The adjustable torque wrench according to claim 3, wherein: A breaking groove (29) is arranged at one end of the limiting ring (28). The breaking groove (29) is used in cooperation with the toothed plate (26).

5. A torque wrench with adjustable length according to claim 1, characterized in that: A plate groove (27) for using with the toothed plate (26) is arranged on the inner wall of the adjusting pipe (2).

6. The adjustable-torque wrench according to claim 2, wherein: Two limiting rods (33) are fixedly arranged on one side inner wall of the placement groove (31). Limiting grooves (34) for using with the limiting rods (33) are respectively arranged on both sides of one end of the placement member (32).

7. The torque wrench with adjustable length according to claim 2, wherein: Upper ends of the four mounting members (38) are respectively provided with pins, and the sizes of the four pins gradually increase from inside to outside.

8. The adjustable torque wrench according to claim 2, characterized in that: A fitting groove (12) is arranged at the upper end of the fitting (11), and the lower end of the mounting member (38) has the same size as the fitting groove (12).

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