Fastening sleeve capable of preventing connection part from being scratched

A technology for fastening sleeves and connectors, which is applied to wrenches, wrenches, screwdrivers, etc., can solve problems such as increased product rework costs and sales costs, no protective devices, product quality damage, etc., to ensure aesthetics and practicality, and eliminate Effect of surface damage and friction reduction

Inactive Publication Date: 2019-06-18
SHAANXI HEAVY DUTY AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there is no protective device for tightening the sleeve during the assembly process. When assembling the flangeless bolt, the pneumatic wrench drives the sleeve to rotate at a high speed, and the edge of the sleeve and the surface of the connected part are rubbed violently, resulting in the paint surface of the connected part. Destruction, accelerate the corrosion of the connected parts, damage the product quality, increase product rework cost and sales cost

Method used

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  • Fastening sleeve capable of preventing connection part from being scratched
  • Fastening sleeve capable of preventing connection part from being scratched
  • Fastening sleeve capable of preventing connection part from being scratched

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] see figure 1 , figure 2 , image 3 with Figure 4 , the anti-friction ring 2 is a ball ring belt 6; when the anti-friction ring 2 is a ball ring belt 6, the ball ring belt 6 is composed of a ball 7 and a ball connecting device 8; the ball connecting device 8 is equally provided with several holes 9 , the axis of the hole 9 is perpendicular to the axis of the sleeve body 1, the ball 7 is installed in the hole 9, the two ends of the ball 7 along the axial direction of the hole 9, one end is in contact with the sleeve body 1, and the other end is in contact with the inner groove 4. Preferably, the ball connection device 8 is divided into upper and lower parts, including an upper strap 10 and a lower strap 11. The upper strap 10 and the lower strap 11 have the same structure and are symmetrical in mirror image. Circular ring, the opening position of the circular rings of the two hoops, the sizes of the circular rings are all the same, and the opening directions of the c...

Embodiment 2

[0047] see Image 6 with Figure 7 , the anti-friction ring 2 can be an annular protrusion. When the anti-friction ring 2 is an annular protrusion, the annular protrusion is fixedly arranged on the inner wall of the outer lining 3 and arranged along the circumferential direction of the outer lining 3; the annular protrusion The cross-section of the ring-shaped protrusion is arc-shaped, and the outer side of the ring-shaped protrusion is in contact with the outer groove 5. The arc of the ring-shaped protrusion is the same as that of the outer groove 5, ensuring that the outer lining 3 can be snapped into the outer groove 5 during assembly. In the outer groove 5, a small round hole is opened to inject lubricant; in this embodiment, the outer lining 3 is also installed on the annular protrusion 12 by heating and pressing; the final fastening sleeve is as follows Figure 9 shown.

[0048] work process:

[0049] The input end of the air trigger is connected to the top interface ...

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PUM

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Abstract

The invention discloses a fastening sleeve capable of preventing a connection part from being scratched. An anti-friction ring is arranged around the outer side of a sleeve body of the fastening sleeve; the front end of the anti-friction ring is in an arc shape; mutual rotation can be performed between the outer side of the arc shape and an outer lining; and thus the surface friction between the connection part and the sleeve is transferred to the spherical surface friction of the arc surface and the inner wall of the outer lining, the frictional force is reduced, thus the connection part is screwed in more smoothly through the sleeve, meanwhile the sleeve body can be prevented from making direct contact with the connection part, the surface damage to a connected part is directly and completely eliminated during bolt assembling, the rusting problem, caused by the damage, of the connected part is completely eliminated, and the attractive appearance and practicability of a product are guaranteed.

Description

【Technical field】 [0001] The invention belongs to the field of assembly technology, in particular to the technology of tightening bolts by using automatic and semi-automatic tools, in particular to a fastening sleeve for preventing connecting parts from being scratched. 【Background technique】 [0002] At present, there is no protective device for tightening the sleeve during the assembly process. When assembling the flangeless bolt, the pneumatic wrench drives the sleeve to rotate at a high speed, and the edge of the sleeve and the surface of the connected part are rubbed violently, resulting in the paint surface of the connected part. Damage, accelerate the corrosion of the connected parts, damage the product quality, increase product rework costs and sales costs. 【Content of invention】 [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a fastening sleeve that prevents the connecting parts from be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/00B25B21/00
Inventor 岳鑫张正峰解毅任伟
Owner SHAANXI HEAVY DUTY AUTOMOBILE
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