Anti-twist precision tolerance regulator

Abstract

The utility model discloses an anti-twist precision tolerance regulator, which mainly comprises a hollow screw rod, a flange plate, a nut and a positioning plastic sleeve, the flange plate is fixedly arranged at the upper end of the hollow screw rod, the nut is fixedly arranged in the positioning plastic sleeve, the hollow screw rod is arranged in the nut in a screwing way, and the positioning plastic sleeve is fixedly arranged on the flange plate. The upper end face of the positioning plastic sleeve is respectively provided with a stop elastic sheet and a stop plate, the lower end face of the flange plate is provided with a downward protruding part, and the protruding part is located between the stop elastic sheet and the stop plate. The hollow screw and the nut can be prevented from being screwed too tightly, and the hollow screw can be prevented from being twisted out due to reverse rotation in the nut in the transportation process, so that subsequent normal installation and use of a product are well guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fastener, more particularly to the technical field of tolerance adjuster for fastening. BACKGROUND

[0002] The tolerance adjuster is an important industrial fastening element, which is widely used in various scenes requiring accurate control of installation size and position. Its main function is to adjust and compensate the size tolerance in the installation process, thereby improving the precision and stability of the product. The automobile industry is one of the important fields of application of the tolerance adjuster. In the automobile manufacturing process, many parts need to be accurately matched and assembled, and the tolerance adjuster can play a key role in this process. For example, in the assembly process of automobile parts, the tolerance adjuster can reduce assembly error and improve the performance and quality of the automobile. With the continuous progress of science and technology and the improvement of industrial manufacturing level, the application scene of the tolerance adjuster will be more and more extensive. The tolerance adjuster mainly consists of a hollow screw, a nut and a positioning plastic sleeve. The nut is fixedly installed in the positioning plastic sleeve, and the hollow screw is rotatably installed in the nut. During assembly, if the hollow screw is too tightly rotatable relative to the nut, it is not conducive to subsequent installation and use. If it is too loose, the hollow screw will rotate freely in the nut during transportation and long-distance transportation, and even may be loose, which is also not conducive to the subsequent installation and use of the product. SUMMARY

[0003] The utility model discloses a kind of anti-twist precision tolerance adjusters to solve the above-mentioned deficiencies. Hollow screw after assembly can be effectively limited, in the case of guaranteeing that subsequent product can normally install and use, hollow screw can also be effectively prevented from twisting out from nut.

[0004] The utility model discloses a kind of anti-twist precision tolerance adjusters to solve the above-mentioned deficiencies. Hollow screw after assembly can be effectively limited, in the case of guaranteeing that subsequent product can normally install and use, hollow screw can also be effectively prevented from twisting out from nut.

[0005] The anti-twist precision tolerance adjuster mainly consists of a hollow screw, a flange plate, a nut and a positioning plastic sleeve. The flange plate is fixedly installed at the upper end of the hollow screw. The nut is fixedly installed in the positioning plastic sleeve. The hollow screw is rotatably installed in the nut. The upper end surface of the positioning plastic sleeve is respectively provided with a stop spring and a stop plate. The lower end surface of the flange plate is provided with a downward protruding portion, which is located between the stop spring and the stop plate.

[0006] Preferably, in the rotation direction of the hollow screw, the stop plate is located to the right of the stop spring.

[0007] Preferably, the outer side of the positioning plastic sleeve is provided with a pair of positioning clamps below.

[0008] Preferably, the center hole of the hollow screw is a regular polygon.

[0009] Preferably, the outer side of the nut is provided with an anti-rotation tooth, and the nut is fixedly installed in the positioning plastic sleeve through the anti-rotation tooth.

[0010] The beneficial effects achieved by the technical solutions of the utility model are as follows: the downward protruding part is arranged on the lower end face of the flange plate, the corresponding stop spring plate and stop plate are arranged on the upper end face of the positioning plastic sleeve, the protruding part is located between the stop spring plate and the stop plate during assembly, the hollow screw and the nut can be prevented from being too tightly screwed, and the hollow screw can be prevented from being twisted out due to reverse rotation in the nut during transportation, so that normal subsequent installation and use of the product are better ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic view of the utility model;

[0012] Figure 2 is a disassembled structural schematic view of the utility model.

[0013] 1, hollow screw; 2, flange plate; 3, nut; 4, positioning plastic sleeve; 5, anti-rotation tooth; 6, stop spring plate; 7, stop plate; 8, protruding part; 9, positioning claw; 10, center hole. DETAILED DESCRIPTION

[0014] By Figure 1 and Figure 2As shown, the anti-twist precision tolerance regulator is mainly composed of a hollow screw rod 1, a flange plate 2, a nut 3 and a positioning plastic sleeve 4. The flange plate 2 is fixedly installed at the upper end of the hollow screw rod 1. The outer side of the nut 3 is provided with an anti-rotation tooth 5. The nut 3 is fixedly installed in the positioning plastic sleeve 4 through the anti-rotation tooth 5. Under the action of the anti-rotation tooth 5, the nut 3 can be effectively prevented from rotating in the positioning plastic sleeve 4 during use. The hollow screw rod 1 is screwedly installed in the nut 3. The upper end surface of the positioning plastic sleeve 4 is respectively provided with a stop spring plate 6 and a stop plate 7. In the rotating direction of the hollow screw rod 1, the stop plate 7 is located at the right side of the stop spring plate 6. The lower end surface of the flange plate 2 is provided with a downward protruding portion 8. During assembly, the hollow screw rod 1 is rotated in the nut 3. The protruding portion 8 of the flange plate 2 at the upper end of the hollow screw rod 1 sweeps the stop spring plate 6 and is located between the stop spring plate 6 and the stop plate 7. Under the stop action of the stop plate 7, the hollow screw rod 1 and the nut 3 will not be over-tightened, which is beneficial to the subsequent installation and use of the product. Under the stop action of the stop spring plate 6, the hollow screw rod 1 will not be twisted during transportation, which is also beneficial to the normal subsequent installation and use of the product. The outer side of the positioning plastic sleeve 4 is provided with a pair of positioning clamping jaws 9 below, which is beneficial to fixing the product on the sheet metal part through the positioning clamping jaws 9. The center hole 10 of the hollow screw rod 1 is a regular polygon, which is convenient for the electric tool to drive the hollow screw rod 1 to rotate.

Claims

1. A precision tolerance adjuster for preventing twisting, characterized in that: It mainly consists of a hollow screw, a flange plate, a nut, and a positioning plastic sleeve. The flange plate is fixedly installed on the upper end of the hollow screw, the nut is fixedly installed inside the positioning plastic sleeve, and the hollow screw is screwed into the nut. The upper end face of the positioning plastic sleeve is provided with a stop spring and a stop plate, and the lower end face of the flange plate is provided with a downward protrusion located between the stop spring and the stop plate.

2. The anti-twist precision tolerance adjuster according to claim 1, characterized in that: In the direction of rotation of the hollow screw, the stop plate is located to the right of the stop spring.

3. The anti-twist precision tolerance adjuster according to claim 1 or 2, characterized in that: A pair of positioning claws are provided on the lower outer side of the positioning plastic sleeve.

4. The anti-twist precision tolerance adjuster according to claim 1 or 2, characterized in that: The central hole of the hollow screw is a regular polygon.

5. The anti-twist precision tolerance adjuster according to claim 1 or 2, characterized in that: The nut is provided with anti-rotation teeth on the outside, and the nut is fixedly installed in the positioning plastic sleeve by the anti-rotation teeth.

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