Torque wrench

Abstract

A torque wrench that reduces machining errors in a wrench device. [Solution] The torque wrench includes a handle body 1, one side of which is connected to a steel pipe 7, one side of which is provided with a drive head 9, an adjusting screw 2, and a first slide block body 5, the adjusting screw being disposed within the handle body and a torque spring 3 connected to the adjusting screw, one end of which is disposed within the handle body and the other end within the steel pipe. The torque spring is used to transmit power, a second slide block body is disposed within the first slide block body, the second slide block body is connected to a drive block 9, the drive block is connected to a collision block 6, the first slide block body, the second slide block body, and the collision block are disposed within the steel pipe, and the first slide block body is connected to the slide block spring.

Description

[Technical Field]

[0001] The present invention relates to the technical field of wrench devices, and more particularly to torque wrenches. [Background technology]

[0002] Torque wrenches, also known as variable torque wrenches, are a type of wrench. Depending on the power source, they can be divided into electric torque wrenches, pneumatic torque wrenches, hydraulic torque wrenches, manual torque wrenches, and digital torque wrenches. Manual torque wrenches can be divided into preset, fixed-value, dial-type, digital, slip, bend, and kilo wrenches. When the tightness of a screw or bolt is important, a torque wrench allows the operator to apply a specific torque value.

[0003] A conventional torque wrench consists of a torque wrench body and a connecting sleeve. After the torque wrench sets the torque, it unscrews the nut by rotating the sleeve. The sleeve connected to the torque wrench can be replaced to suit the nut model number. The sleeve must be attached before use, and then removed and stored separately after use.

[0004] The existing slide block is made up of a single body, which directly contacts the steel pipe and rubs the main pipe, causing wear on the main pipe. After the main pipe wears, the precision changes and the sliding of the steel balls cannot be guaranteed. The assembly technology is complicated, and the direct contact with the main pipe causes wear on the main pipe, affecting the precision. Summary of the Invention [Means for solving the problem]

[0005] SUMMARY OF THE INVENTION In view of the shortcomings of the prior art, the present invention aims to provide a torque wrench that overcomes the problems of the background art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A torque wrench, The handle body includes a steel pipe connected to one side of the handle body, and a driving head is provided on one side of the steel pipe. The handle body further includes: an adjusting screw, the adjusting screw being provided in the handle body, a torque spring being connected to the adjusting screw, one end of the torque spring being provided in the handle body and the other end being provided in the steel pipe, the torque spring being used to transmit power; a first slide block body, and a second slide block body provided within the first slide block body; the second slide block body connected to a drive block, the drive block connected to a collision block; the first slide block body, the second slide block body, and the collision block are provided within the steel pipe; the first slide block body is connected to a slide block spring; and the first slide block body and the second slide block body slide relative to each other.

[0007] As a further technical means of the present invention, one side of the second slide block body is provided with a groove, which is movably connected to the driving block.

[0008] As a further technical means of the present invention, the groove is provided with a number of positioning grooves to ensure directional stability.

[0009] As a further technical means of the present invention, the handle body is connected to the steel pipe through a torque lock ring, and the torque lock ring is used to lock the steel pipe.

[0010] As a further technical means of the present invention, the steel pipe is connected to the driving head through a transmission pin. [Effects of the Invention]

[0011] As a result, the present invention has the following advantageous effects compared to the prior art: In this invention, by rotating the handle body, the handle body drives the adjusting screw, and the adjusting screw compresses and releases the torque spring to adjust the torque magnitude. The force is transmitted through the pressure of the torque spring, and the force of the torque spring is transmitted to the first sliding block body, and the force of the first sliding block body is transmitted to the driving block, so that the driving block and the collision block come into relative contact with each other. After completion, the force of the driving head is transmitted to the screw, and the force of the driving head is transmitted through the transmission pin, and the driving head moves axially around the transmission pin. When the force value reaches the force value set in the torque spring, the driving block rotates sideways, compressing the torque spring. After the force is released, the torque spring returns to its original position.

[0012] In order to more clearly explain the structural features and effects of the present invention, the present invention will be described in detail below in combination with the drawings and specific embodiments. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a configuration diagram of an embodiment of the present invention. [Figure 2] FIG. 2 is a configuration diagram of a first slide block body according to the embodiment of the present invention. [Figure 3] 3 is a schematic diagram of a groove structure in an embodiment of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be described in more detail below in conjunction with the drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0015] Hereinafter, specific implementation examples of the present invention will be described in detail based on specific embodiments.

[0016] In one embodiment, a torque wrench, as shown in FIGS. 1 to 3, includes a handle body 1, a steel pipe 7 connected to one side of the handle body 1, and a drive head 11 provided on one side of the steel pipe 7, and further includes: an adjusting screw 2, the adjusting screw 2 being provided in the handle body 1, a torque spring 3 being connected to the adjusting screw 2, one end of the torque spring 3 being provided in the handle body 1 and the other end being provided in the steel pipe 7, the torque spring 3 being used to transmit power; A first slide block body 5 is provided, and a second slide block body 12 is provided within the first slide block body 5. The second slide block body 12 is connected to a drive block 9, and the drive block 9 is connected to a collision block 6. The first slide block body 5 and the collision block 6 are provided within the steel pipe 7.

[0017] In this embodiment, by rotating the handle body 1, the handle body 1 drives the adjustment screw 2, the adjustment screw 2 compresses and releases the torque spring 3, and the force is transmitted by the pressure of the torque spring 3. The force of the torque spring 3 is transmitted to the first slide block body 5, and the force of the first slide block body 5 is transmitted to the drive block 9, and the drive block 9 comes into relative contact with the collision block 6. After completion, the force of the drive head 11 is transmitted to the screw, and the force of the drive head 11 is transmitted through the transmission pin 10, and the drive head 11 moves axially around the transmission pin 10. When the force value reaches the force value set in the torque spring 3, the drive block 9 rotates sideways, and the torque spring 3 is compressed and contracted. After the force is released, the torque spring 3 is aligned.

[0018] In one embodiment, referring to FIGS. 1 to 3, the first slide block body 5 connects with a slide block spring 8, and the first slide block body 5 and the second slide block body 12 slide relative to each other.

[0019] In this embodiment, the slide block body and the second slide block body 12 fit together tightly, ensuring that the two parts are a single whole and there is no centering error due to gap tolerance issues. The second slide block body 12 is short, reducing friction between them and ensuring a stable friction coefficient. To prevent friction between them due to deformation, the first slide block body 5 is made of a high-alloy material and the second slide block body 12 uses self-lubricating clinker, so that wear between them is nearly zero.

[0020] The coefficient of friction is also relatively stable throughout the entire force transmission process. Product precision is effectively controlled, and at the moment of force release, the slide block body moves relative to the slide block body, and the second slide block body 12 comes into contact with the main pipe. The first slide block body 5 and the second slide block body 12 are in contact with each other, with the first slide block body 5 being the whole and the second slide block body 12 being made of self-lubricating material, effectively ensuring stable friction between them.

[0021] 1 to 3, one side of the second slide block body 12 is provided with a groove 13 movably connected to the drive block 9. As shown in FIG.

[0022] Furthermore, referring to FIGS. 1 to 3, the groove 13 is provided with a plurality of positioning grooves for ensuring directional stability.

[0023] Further, referring to FIGS. 1 to 3, the handle body 1 is connected to a steel pipe 7 via a torque lock ring 4, and the torque lock ring 4 is used to lock the steel pipe 7.

[0024] Furthermore, referring to FIGS. 1 to 3, the steel pipe 7 is connected to a drive head 11 via a transmission pin 10 .

[0025] In this embodiment, four fixed grooves can be installed in the groove 13 for positioning, which can effectively control the direction of the second slide block body 12 and ensure directional stability. After completing the directional positioning, the contact surface of the product can be well controlled. The middle of the second slide block body 12 is hollowed out to reduce the processing error of the product, and the clearance avoidance process reduces the relative error. The number of grooves 13 is not limited, and the shape of the installed positioning groove is not fixed, as long as it can achieve the effect of controlling the direction of the second slide block body 12 and ensuring directional stability. The direction and positioning of the product contact surfaces are also well controlled. The first sliding block body 5 is made of high-density alloy material, and the second sliding block body 12 is made of self-lubricating clinker, which effectively resolves the friction between the steel pipe and the sliding block body. The friction between the first sliding block body 5 and the steel pipe 7 is resolved by the second sliding block body 12, which separates the first sliding block body 5 and the steel pipe 7 and resolves the friction between them. The second sliding block body 12 also plays a lubricating role, solving the problem of the high friction coefficient of iron parts.

[0026] The above is only a preferred embodiment of the present invention, and does not need to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. [Explanation of symbols]

[0027] 1, handle body; 2, adjusting screw; 3, torque spring; 4, torque lock ring; 5, first slide block body; 6, collision block; 7, steel pipe; 8, slide block spring; 9, driving block; 10, transmission pin; 11, driving head; 12, second slide block body; 13, groove.

Claims

1. A torque wrench including a handle body, a steel pipe connected to one side of the handle body, and a drive head provided on one side of the steel pipe, Furthermore, it includes: an adjusting screw, the adjusting screw being provided in the handle body, a torque spring being connected to the adjusting screw, one end of the torque spring being provided in the handle body and the other end being provided in the steel pipe, the torque spring being used to transmit power; a first slide block body; a second slide block body provided within the first slide block body; the second slide block body connected to a drive block, the drive block connected to a collision block; the first slide block body, the second slide block body, and the collision block are provided within the steel pipe; the first slide block body is connected to a slide block spring; and the first slide block body and the second slide block body slide relative to each other.

2. 2. The torque wrench according to claim 1, wherein one side of the second slide block body is provided with a groove movably connected to the drive block.

3. 3. The torque wrench of claim 2, wherein the groove is provided with a plurality of positioning grooves for ensuring directional stability.

4. 2. The torque wrench according to claim 1, wherein the handle body is connected to a steel pipe via a torque lock ring, and the torque lock ring is used to lock the steel pipe.

5. 2. The torque wrench according to claim 1, wherein the steel pipe is connected to the drive head via a transmission pin.

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