CN217020155U

CN217020155U - Torque wrench

Info

Publication number: CN217020155U
Application number: CN202122795694.0U
Authority: CN
Inventors: 邵君; 华良; 薛林伟
Original assignee: Hangzhou Xinmai Technology Co ltd
Current assignee: Hangzhou Xinmai Technology Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-07-22
Anticipated expiration: 2031-11-16

Abstract

The utility model is suitable for the technical field of torque wrenches, and provides a torque wrench, which comprises a steel pipe and also comprises: the adjusting part comprises a sliding block main body arranged in the steel pipe, the sliding block main body comprises a first main body and a second main body, the side wall of the second main body is contacted with the inner wall of the steel pipe, the first main body is arranged in the second main body, a steel ball is arranged between the first main body and the second main body, and the steel ball is fixed between the first main body and the second main body through a spring; the working part comprises a driving head arranged at one end of the steel pipe, and the driving head is connected with the sliding block main body through a connecting assembly; and the control part is used for being held by a user, a torsion spring matched with the control part is arranged in the steel pipe, and one end of the torsion spring is contacted with the first main body. The utility model can effectively control abrasion, and solves the problem that the precision of the steel pipe is poor after abrasion caused by stress friction.

Description

Torque wrench

Technical Field

The utility model belongs to the technical field of torque wrenches, and particularly relates to a torque wrench.

Background

Torque wrenches, also called torque wrenches and torque wrenches, can be divided into electric, pneumatic and manual in terms of force source. There are three types of manual torque wrenches common in the industry: preset torque wrenches, digital display torque wrenches, dial type torque wrenches (also called pointer type). Each type of wrench has its own features and uses in different situations, such as a preset torque wrench mainly used for fastening a preset number of bolts, and a digital display type torque wrench and a dial type torque wrench are generally used for detecting torque. In general, torque wrenches are used primarily for precise control of bolt force values

In the existing torque wrench, a sliding block is directly rubbed with a steel pipe, so that the friction resistance is large due to the sliding of the sliding block, and the product precision is influenced. The other type is that the steel ball is in contact with the steel pipe, the steel ball is directly stressed on the steel pipe, and the hardness of the steel pipe directly influences the precision of the product. The precision of the two torsion springs fluctuates along with the use, and the use effect is poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model aims to provide a torque wrench, and aims to solve the problem that in the existing torque wrench, a sliding block directly rubs a steel pipe, so that the friction resistance is large and the product precision is influenced due to the sliding. The other type is that steel balls are in contact with a steel pipe, the steel balls are directly stressed on the steel pipe, and the hardness of the steel pipe directly influences the precision of a product. The precision of the two torsion springs fluctuates along with the use, and the use effect is poor.

The embodiment of the present invention is achieved as described above, in which the torque wrench includes a steel pipe, and further includes:

the adjusting part comprises a sliding block main body arranged in the steel pipe, the sliding block main body comprises a first main body and a second main body, the side wall of the second main body is contacted with the inner wall of the steel pipe, the first main body is arranged in the second main body, a steel ball is arranged between the first main body and the second main body, and the steel ball is fixed between the first main body and the second main body through a spring;

the working part comprises a driving head arranged at one end of the steel pipe, and the driving head is connected with the sliding block main body through a connecting assembly; and

the control part is used for being held by a user, a torsion spring matched with the control part is installed inside the steel pipe, and one end of the torsion spring is in contact with the first main body.

Further technical scheme, coupling assembling includes the ratchet pole of being connected with the drive head, the inside of ratchet pole insertion steel pipe, the ratchet pole passes through the driving pin and installs in the steel pipe, the one end that the ratchet pole is close to the slider main part is provided with the collision piece, just be provided with on the slider main part with collision piece complex drive square.

According to the technical scheme, the control portion comprises a handle main body, the handle main body is sleeved on one end, far away from the driving head, of the steel pipe, an adjusting screw rod is installed inside the handle main body, the adjusting screw rod penetrates through the end portion of the steel pipe and is inserted into the steel pipe, and one end, located inside the steel pipe, of the adjusting screw rod is in contact with the torsion spring.

According to a further technical scheme, the first main body and the second main body are clamped through clamp springs.

According to a further technical scheme, the first main body and the second main body are made of high-hardness alloy.

In a further technical scheme, the steel balls are high-hardness steel balls.

According to a further technical scheme, the outer wall of the handle main body is subjected to roller decoration.

According to the torque wrench provided by the embodiment of the utility model, in the process of transferring the acting force, the first main body and the second main body are in rolling friction, and the rolling friction force is smaller than the sliding friction between the second main body and the steel pipe, so that the first main body slides in parallel, the second main body is in a fixed state, the abrasion can be effectively controlled, and the problem of poor precision of the steel pipe after being abraded due to stress friction is solved.

Drawings

Fig. 1 is a schematic structural diagram of a torque wrench according to an embodiment of the present invention;

fig. 2 is a sectional view of a torque wrench according to an embodiment of the present invention.

In the drawings: a handle body 1; a steel pipe 2; a ratchet rod 3; a drive head 4; an adjusting screw 5; a torsion spring 6; a first body 7; a second body 8; a spring 9; a clamp spring 10; steel balls 11; a driving block 12; an impact mass 13; a drive pin 14; a slider main body 15.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1-2, a torque wrench according to an embodiment of the present invention includes a steel tube 2, and further includes:

the adjusting part comprises a sliding block main body 15 arranged in the steel pipe 2, the sliding block main body 15 comprises a first main body 7 and a second main body 8, the side wall of the second main body 8 is in contact with the inner wall of the steel pipe 2, the first main body 7 is arranged in the second main body 8, a steel ball 11 is arranged between the first main body 7 and the second main body 8, and the steel ball 11 is fixed between the first main body 7 and the second main body 8 through a spring 9;

the working part comprises a driving head 4 arranged at one end of the steel pipe 2, and the driving head 4 is connected with the sliding block main body 15 through a connecting component; and

the control part is used for holding a user, the internal mounting of the steel pipe 2 is provided with a torsion spring 6 matched with the control part, one end of the torsion spring 6 is contacted with a first main body 7, the control part comprises a handle main body 1 which is sleeved on one end of the steel pipe 2 far away from the driving head 4, an adjusting screw rod 5 is arranged inside the handle main body 1, the adjusting screw rod 5 penetrates through the end part of the steel pipe 2 and is inserted into the steel pipe 2, and the adjusting screw rod 5 is positioned at one end inside the steel pipe 2 and is contacted with the torsion spring 6.

In the embodiment of the present invention, the first body 7 and the second body 8 are engaged with each other by a snap spring 10. The connecting assembly comprises a ratchet rod 3 connected with a driving head 4, the ratchet rod 3 is inserted into the steel tube 2, the ratchet rod 3 is installed in the steel tube 2 through a driving pin 14, an impact block 13 is arranged at one end, close to a sliding block main body 15, of the ratchet rod 3, and a driving square block 12 matched with the impact block 13 is arranged on the sliding block main body 15. The outer wall of the handle main body 1 is rolled, so that a user can hold the handle conveniently. The torque wrench has the using principle that the torque is adjusted by rotating the handle main body 1, and the handle main body 1 can enable the torque spring 6 to be stressed and compressed through the adjusting screw rod 5 to output constant torque; the force is applied to the rear of the handle body 1 and is rotated by the driving pin 14, and the force of the driving head 4 is applied to the screw and the nut through the sleeve. The transmission process of the acting force of the torque wrench is as follows: the torque of the torsion spring 6 is transmitted to the slider body 15, the force of the slider body 15 is accordingly transmitted to the drive block 12, the force of the drive block 12 is transmitted to the impact mass 13, and the force of the impact mass 13 is transmitted to the ratchet rod 3 and is finally output to the drive head 4. Wherein the ratchet rod 3 has a directional degree of freedom that can rotate around the driving pin 14, the degree of freedom being limited by the space of the steel pipe 2. Drive square 12 has a degree of freedom, and after power reached torque spring 6's settlement moment, torque spring 6 compressed, drive square 12 can rotate to drive ratchet rod 3 and rotate round transmission pin 14, collision piece 13 can skid in the twinkling of an eye, collision piece 13 can collide with steel pipe 2, makes the sound, and after the release pressure, torque spring 6 resets, and ratchet rod 3 returns the normal position, and whole moment release process is accomplished. The force transmission of the sliding block main body 15 is mainly completed by the first main body 7, the first main body 7 is in contact with the second main body 8 through the steel ball 11, the steel ball 11 is in limited fixation through the spring 9, and the steel ball 11 cannot slide out of a track formed by the matching of the first main body 7 and the second main body 8; after the first main body 7, the spring 9 and the steel ball 11 are assembled, the first main body, the spring 9 and the steel ball 11 penetrate into the second main body 8 and are connected through the snap spring 10 to form a whole.

As shown in fig. 2, as a preferred embodiment of the present invention, the material of the first body 7 and the second body 8 is a high hardness alloy. The steel balls 11 are high-hardness steel balls. The abrasion can be effectively controlled, and the product precision is ensured.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the utility model, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides a torque wrench, includes the steel pipe, its characterized in that still includes:

the adjusting part comprises a sliding block main body arranged in the steel pipe, the sliding block main body comprises a first main body and a second main body, the side wall of the second main body is in contact with the inner wall of the steel pipe, the first main body is arranged in the second main body, a steel ball is arranged between the first main body and the second main body, and the steel ball is fixed between the first main body and the second main body through a spring;

the working part comprises a driving head arranged at one end of the steel pipe, the driving head is connected with the slider main body through a connecting assembly, the connecting assembly comprises a ratchet rod connected with the driving head, the ratchet rod is inserted into the steel pipe, the ratchet rod is installed in the steel pipe through a transmission pin, an impact block is arranged at one end, close to the slider main body, of the ratchet rod, and a driving square block matched with the impact block is arranged on the slider main body; and

the control part is used for being held by a user, a torsion spring matched with the control part is installed inside the steel pipe, one end of the torsion spring is in contact with the first main body, the control part comprises a handle main body, the handle main body is sleeved on one end, far away from the driving head, of the steel pipe, an adjusting screw is installed inside the handle main body, the adjusting screw penetrates through the end part of the steel pipe and is inserted into the steel pipe, and the adjusting screw is located at one end, inside the steel pipe, of the steel pipe and is in contact with the torsion spring.

2. The torque wrench of claim 1, wherein the first body and the second body are engaged by a snap spring.

3. The torque wrench of claim 1, wherein the material of the first and second bodies is a high hardness alloy.

4. The torque wrench of claim 3, wherein the steel ball is a high hardness steel ball.

5. The torque wrench of claim 1, wherein the outer wall of the handle body is knurled.