TWI787060B - a torque wrench - Google Patents

Abstract

The invention discloses a torque wrench, which belongs to the technical field of wrench equipment and solves the problem of the existing torque wrench. The processing error of hand equipment is relatively large. The technical points are as follows: a handle body, one side of the handle body is connected to a steel pipe, and a driving head is provided on one side of the steel pipe, and an adjustment screw, the adjustment The screw rod is arranged in the handle main body, the adjusting screw rod is connected with a tension spring, one end of the tension spring is arranged in the handle main body, the other end of the tension spring is arranged in the steel pipe, the The tension spring is used to transmit power; the first slider body, the first slider body is provided with a second slider body, the second slider body is connected to a driving block, and the driving block is connected to a collision block, so The first slider main body and the collision block are arranged in the steel pipe, which has the advantage of reducing processing errors.

Description

a torque wrench

The invention relates to the technical field of wrench equipment, in particular to a torque wrench.

Torque wrench, also known as torque wrench or adjustable torque wrench, is a kind of wrench. According to the power source, it can be divided into: electric torque wrench, pneumatic torque wrench, hydraulic torque wrench, manual torque wrench and digital torque wrench; manual torque wrench can be divided into: preset type, fixed value type, dial type, digital display type, slip type, bent type and kg wrenches. When screw and bolt tightness is critical, the use of a torque wrench allows the operator to apply a specific torque value.

The structure of the existing torque wrench is a torque wrench body and a connecting sleeve. After the torque is set by the torque wrench, the nut is unscrewed by rotating the sleeve. The sleeve connected to the torque wrench can be changed according to the type of the nut. The size needs to be installed. After use, the sleeve needs to be removed and stored separately.

The existing entire slider consists of a main body, which directly contacts with the steel pipe, directly rubs against the main pipe, and the main pipe is worn. After the main pipe is worn, the accuracy changes, and the sliding of the steel ball cannot be guaranteed. The assembly process is complicated, and it also directly contacts the main pipe, causing the main pipe to wear. Affects accuracy.

In view of the deficiencies in the prior art, the purpose of the embodiments of the present invention is to provide a torque wrench to solve the above-mentioned problems in the background art.

To achieve the above object, the present invention provides the following technical solutions:

A torque wrench, comprising a handle main body, one side of the handle main body is connected to a steel pipe, one side of the steel pipe is provided with a driving head, and an adjusting screw is arranged in the handle main body, the adjusting The screw rod is connected with an extension spring, one end of the extension spring is arranged in the handle main body, the other end of the extension spring is arranged in the steel pipe, and the extension spring is used for power transmission; the first slider Main body, the first slider body is provided with a second slider body, the second slider body is connected to a driving block, the driving block is connected to a collision block, and the first slider body and the collision block are arranged on the Inside the steel pipe.

As a further solution of the present invention, the first slider body is connected to the second slider body through a slider spring, one end of the slider spring is connected to the first slider body, and the other end of the slider spring is One end is connected to the second slider main body, and the first slider main body and the second slider main body slide mutually.

As a further solution of the present invention, a groove is provided on one side of the main body of the second slider, and the groove is movably connected to the driving block.

As a further solution of the present invention, the first slider body and the second slider body are made of high alloy materials.

As a further solution of the present invention, several positioning grooves are arranged in the groove, and the positioning grooves are used to ensure the stability of the direction.

As a further solution of the present invention, the handle body is connected to the steel pipe through a torsion locking ring, and the torsion locking ring is used to clamp the steel pipe.

As a further solution of the present invention, the steel pipe is connected to the driving head through a transmission pin.

In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

In the present invention, by rotating the main body of the handle, the main body of the handle drives the adjusting screw, and the adjusting screw compresses and releases the tension spring to adjust the torsion force, and the tension is adjusted by the pressure of the tension spring. For transmission of force, the force of the tension spring is transmitted to the main body of the first slider, the force of the main body of the first slider is transmitted to the driving block, and the driving block is in relative contact with the collision block; After the completion, the force of the drive head is transmitted to the screw and the screw, and the force of the drive head is transmitted through the drive pin, and the drive head moves axially around the drive pin. When the force value reaches the force value set by the tension spring, the drive block turns sideways , the extension spring is compressed, and after unloading, the extension spring returns to its original position.

In order to more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

1: handle body

2: Adjusting screw

3: tension spring

4:Torque lock ring

5: The first slider body

6: Collision block

7: steel pipe

8: Slider spring

9: Drive block

10: Transmission pin

11: Drive head

12: Second slider body

13: Groove

14: groove surface

Fig. 1 is a structural schematic diagram of an embodiment of the invention.

Fig. 2 is a schematic structural view of the first slider body in the embodiment of the invention.

Fig. 3 is a schematic diagram of the structure of the groove in the embodiment of the invention.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The specific implementation of the present invention will be described in detail below in conjunction with specific embodiments.

In one embodiment, a torque wrench, referring to FIGS. 1 to 3 , includes a handle body 1, one side of the handle body 1 is connected to a steel pipe 7, and one side of the steel pipe 7 is provided with a driving head 11, and further includes: Adjusting screw 2, the adjusting screw 2 is arranged in the handle body 1, the adjusting screw 2 is connected with a tension spring 3, one end of the tension spring 3 is arranged in the handle body 1, the tension The other end of the spring 3 is arranged in the steel pipe 7, and the tension spring 3 is used to transmit power; The first slider body 5, the first slider body 5 is provided with a second slider body 12, the second slider body 12 is connected to the driving block 9, the driving block 9 is connected to the collision block 6, the The first slider main body 5 and the collision block 6 are arranged in the steel pipe 7 .

In this embodiment, by turning the handle main body 1, the handle main body 1 drives the adjustment screw 2, and the adjustment screw 2 compresses and releases the tension spring 3 to adjust the torsion force, and the force is transmitted through the tension spring 3 pressure. The force of the tension spring 3 is transmitted to the first slider body 5, and the force of the first slider body 5 is transmitted to the driving block 9, and the driving block 9 is in relative contact with the collision block 6; After the completion, the force of the drive head 11 is transmitted to the screw and the screw, and the force of the drive head 11 is transmitted through the drive pin 10, and the drive head 11 moves axially around the drive pin 10. When the force value reaches the force value set by the tension spring 3 , the driving block 9 turns sideways, the tension spring 3 is compressed, and after the force is unloaded, the tension spring 3 returns to its original position.

In one embodiment, referring to Fig. 1 to Fig. 3, the first slider body 5 is connected to the second slider body 12 through a slider spring 8, and one end of the slider spring 8 is connected to the first slider The block body 5, the other end of the slider spring 8 is connected to the second slider body 12, and the first slider body 5 and the second slider body 12 slide mutually.

In this embodiment, the middle part of the first slider body 5 and the second slider body 12 is hollowed out, and the hollowing out also solves the uncertain factors caused by the change of the contact point due to the problem of straightness, and solves the force During the process, the steel pipe 7 is deformed, and the deformation causes mutual friction. The first slider body 5 supports the second slider body 12 through the slider spring 8 to prevent the second slider body 12 from going all the way to the front end. Move, the friction coefficient between the first slider body 5 and the steel pipe 7 is greater than the friction coefficient between 5 and 12, all will only produce sliding between the first slider body 5 and the second slider body 12, and will not produce the first sliding The sliding between the block main body 5 and the steel pipe 7, so the steel pipe 7 will not be worn.

Further, referring to FIGS. 1 to 3 , a groove 13 is provided on one side of the second slider main body 12 , and the groove 13 is movably connected to the driving block 9 .

Further, referring to Fig. 1 to Fig. 3, several positioning grooves are arranged in the groove 13, and the positioning grooves are used to ensure the stability of the direction.

Further, referring to FIGS. 1 to 3 , the handle main body 1 is connected to the steel pipe 7 through the torsion locking ring 4 , and the torsion locking ring 4 is used to clamp the steel pipe 7 .

Further, referring to FIGS. 1 to 3 , the steel pipe 7 is connected to the driving head 11 through the transmission pin 10 .

In this embodiment, four fixing grooves can be set in the groove 13 for positioning, which effectively controls the direction of the second slider body 12, ensures the stability of the direction, and completes the direction positioning and can also contact the product. The surface is well controlled, and the middle of the second slider body 12 is hollowed out to reduce the processing error of the product, and the hollowing process reduces the relative error; The groove 13 can also be provided with several positioning grooves, the number is not limited, and the shape of the positioning grooves is not fixed, which can achieve the effect of controlling the direction of the second slider body 12 and ensuring the stability of the direction; The first slider main body 5 and the second slider main body 12 are made of high-alloy materials, and wear-resistant materials can also be used, which effectively controls the stability of friction, and stable friction ensures uniform accuracy and relatively high friction coefficient. Very stable, during the entire force transmission process, it is very stable and effectively controls the product accuracy. The first slider body 5 moves relative to the second slider body 12 at the moment of force release, and the first slider body 5 and the steel pipe 7 are in contact with each other, the friction coefficient of the first slider body 5 and the second slider body 12 is smaller than that of the first slider body 5 and the steel pipe 7, and all relative friction is caused by the first slider body 5 and the second slider body The direct movement of the body 12 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

1: handle body

2: Adjusting screw

3: tension spring

4:Torque lock ring

5: The first slider body

6: Collision block

7: steel pipe

9: Drive block

10: Transmission pin

11: Drive head

Claims (6)

A torque wrench, comprising a handle main body, one side of the handle main body is connected to a steel pipe, and one side of the steel pipe is provided with a driving head, which also includes: an adjusting screw, the adjusting screw is arranged in the handle main body, the The adjusting screw is connected with a tension spring, one end of the tension spring is arranged in the handle main body, the other end of the tension spring is arranged in the steel pipe, and the tension spring is used for power transmission; and the first The slider body, the first slider body is provided with a second slider body, the second slider body is connected to a driving block, the driving block is connected to a collision block, the first slider body and the collision The block is set in the steel pipe, wherein the first slider body is connected to the second slider body through a slider spring, one end of the slider spring is connected to the first slider body, and the slider spring The other end of the slider is connected to the second slider body, the first slider body and the second slider body slide against each other, and the coefficient of friction between the first slider body and the second slider body is less than The coefficient of friction between the first slider body and the steel pipe. The torque wrench according to claim 1, wherein a groove is provided on one side of the second slider main body, and the groove is movably connected to the driving block. The torque wrench according to claim 1, wherein the first slider body and the second slider body are made of high alloy materials. The torque wrench according to claim 2, wherein several positioning grooves are arranged in the groove, and the positioning grooves are used to ensure the stability of the direction. The torque wrench according to claim 1, wherein the handle body is connected to the steel pipe through a torque locking ring, and the torque locking ring is used to clamp the steel pipe. The torque wrench according to claim 1, wherein the steel pipe is connected to the driving head through a transmission pin.

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