Tolerance gap adjuster for vehicle body component

Abstract

The utility model discloses a tolerance clearance adjuster for a vehicle body component, which mainly comprises a hollow screw rod, a nut and a positioning sleeve, the hollow screw rod is screwed in the nut, the whole positioning sleeve is in a hollow barrel shape, an elastic locking claw facing the inner side is arranged at the upper end of the barrel-shaped positioning sleeve, and the hollow screw rod is screwed in the nut. An elastic locking claw is arranged in the cylindrical positioning sleeve, a limiting convex ring is arranged at the lower end of the cylindrical positioning sleeve, and the nut is fixedly installed in the positioning sleeve and clamped between the elastic locking claw and the limiting convex ring. The nut is effectively prevented from loosening out of the positioning sleeve, and the stability of product quality is improved.

Description

TECHNICAL FIELD

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

[0002] The tolerance gap 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 installation accuracy and stability of the product. The automobile industry is one of the important fields of application of the tolerance gap adjuster. In the automobile manufacturing process, many vehicle body components need to be accurately matched and assembled, and the tolerance gap adjuster can play a key role in this process. For example, in the assembly process of the front bumper of the automobile, the tolerance gap adjuster can reduce the assembly error and improve the assembly quality. The tolerance gap adjuster mainly consists of a hollow screw, a nut and a positioning sleeve. The nut is fixedly installed in the positioning sleeve, and the hollow screw is rotatably installed in the nut. During assembly, the nut is usually fixedly installed in the positioning sleeve by interference fit. The disadvantage of this fixing method is that the nut may be loose from the positioning sleeve under the action of the force of the hollow screw during use, affecting the stability of product quality. SUMMARY

[0003] The utility model discloses a kind of tolerance gap adjusters for vehicle body components, which are mainly composed of a hollow screw, a nut and a positioning sleeve. The nut is fixedly installed in the positioning sleeve, which is more secure and stable, and will not loosen. This design helps to improve the stability of product quality.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The tolerance gap adjuster for vehicle body components mainly consists of a hollow screw, a nut and a positioning sleeve. The hollow screw is rotatably installed in the nut. The positioning sleeve is hollow and cylindrical. An inward-facing elastic locking claw is provided on the upper end of the cylindrical positioning sleeve, and a limiting protruding ring is provided on the lower end of the cylindrical positioning sleeve. The nut is fixedly installed in the positioning sleeve and clamped between the elastic locking claw and the limiting protruding ring.

[0006] Preferably, vertical ribs or knurls are provided on the inner side of the positioning sleeve, and corresponding vertical ribs or knurls are provided on the outer side of the nut. The vertical ribs or knurls on the inner side of the positioning sleeve are in close contact with the vertical ribs or knurls on the outer side of the nut.

[0007] The flange plate is preferably fixedly installed on the hollow screw, the upper end surface of the positioning sleeve is respectively provided with a stop spring and a stop plate, and the lower end surface of the flange plate is provided with a downward protruding part between the stop spring and the stop plate.

[0008] Preferably, in the rotation direction of the hollow screw, the stop plate is located on the right side of the rotation direction of the stop spring.

[0009] Preferably, the positioning sleeve is provided with a pair of positioning clamps below the outer side.

[0010] Preferably, the center hole of the hollow screw is a regular polygon.

[0011] Preferably, a driving spring is installed in the center hole of the hollow screw.

[0012] The beneficial effects achieved by the above technical solutions of the utility model are:

[0013] 1. By setting the elastic lock claw and the limiting protruding ring in the positioning sleeve, the nut can be firmly and stably limited in the positioning sleeve, the nut is effectively prevented from loosening out of the positioning sleeve, and the stability of product quality is improved.

[0014] 2. By setting the vertical convex rib or the knurl on the outer side of the nut and the inner side of the positioning sleeve, the anti-rotation performance of the nut in the positioning sleeve can be effectively improved.

[0015] 3. By setting the downward protruding part on the lower end surface of the flange plate and the corresponding stop spring and stop plate on the upper end surface of the positioning sleeve, the protruding part is located between the stop spring and the stop plate during assembly, so that 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 by reverse rotation in the nut during transportation, thereby better ensuring the normal installation and use of the product. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a disassembled structural schematic view of the utility model;

[0018] Figure 3 It is Figure 2 another view of the structural schematic view;

[0019] Figure 4 It is a structural schematic view of the positioning sleeve in the utility model.

[0020] 1, hollow screw; 2, nut; 3, positioning sleeve; 4, elastic locking claw; 5, limiting convex ring; 6, vertical convex rib; 7, flange plate; 8, stop spring; 9, stop plate; 10, convex part; 11, positioning clamping jaw; 12, center hole; 13, drive spring. DETAILED DESCRIPTION

[0021] As shown by Figure 1 , Figure 2 , Figure 3 and Figure 4 , a vehicle body member tolerance gap adjuster is mainly composed of a hollow screw 1, a nut 2 and a positioning sleeve 3. The hollow screw 1 is rotatably installed in the nut 2. The positioning sleeve 3 is a hollow cylinder as a whole. An elastic locking claw 4 is arranged on the upper end of the cylindrical positioning sleeve 3 and faces the inside. A limiting convex ring 5 is arranged on the lower end of the cylindrical positioning sleeve 3. The nut 2 is fixedly installed in the positioning sleeve 3 and is clamped between the elastic locking claw 4 and the limiting convex ring 5. In this way, the nut 2 can be firmly and stably locked and fixed in the positioning sleeve 3 to prevent loosening during use. A vertical convex rib 6 or knurling is arranged on the inside of the positioning sleeve 3. Corresponding vertical convex ribs 6 or knurling are arranged on the outside of the nut 2. The vertical convex ribs 6 or knurling on the inside of the positioning sleeve 3 are in close contact with the vertical convex ribs 6 or knurling on the outside of the nut 2, which can improve the anti-rotation effect of the nut 2 in the positioning sleeve 3. A flange plate 7 is fixedly installed on the hollow screw 1. A stop spring 8 and a stop plate 9 are arranged on the upper end face of the positioning sleeve 3, respectively. A downward convex part 10 is arranged on the lower end face of the flange plate 7. The convex part 10 is located between the stop spring 8 and the stop plate 9. In the rotation direction of the hollow screw 1, the stop plate 9 is located on the right side of the rotation direction of the stop spring 8. During assembly, the hollow screw 1 is rotated in the nut 2. The convex part 10 of the flange plate 7 on the upper end of the hollow screw 1 sweeps the stop spring 8 and is located between the stop spring 8 and the stop plate 9. Under the stop action of the stop plate 9, the hollow screw 1 and the nut 2 will not be too tightly rotated. This is beneficial to the installation and use of subsequent products. Under the stop action of the stop spring 8, the hollow screw 1 will not be twisted out during transportation. This is also beneficial to ensure the normal installation and use of subsequent products. A pair of positioning clamping jaws 11 are arranged on the outside of the lower part of the positioning sleeve 3. The center hole 12 of the hollow screw 1 is a regular polygon. Alternatively, a drive spring 13 is installed in the center hole 12 of the hollow screw 1. This facilitates the rotation of the hollow screw 1 by the regular polygon center hole 12 or the drive spring 13 driven by an electric tool.

Claims

1. A tolerance clearance adjuster for vehicle body components, mainly composed of a hollow screw, a nut, and a positioning sleeve, wherein the hollow screw is screwed into the nut, characterized in that: The positioning sleeve is hollow and cylindrical as a whole, and is provided with an inwardly-facing elastic locking claw at the upper end of the cylindrical positioning sleeve and a limiting convex ring at the lower end of the cylindrical positioning sleeve.

2. A vehicle body member tolerance gap adjuster according to claim 1, characterized by: The inner side of the positioning sleeve is provided with vertical ribs or knurls, and the outer side of the nut is provided with corresponding vertical ribs or knurls, and the vertical ribs or knurls on the inner side of the positioning sleeve are in close contact with the vertical ribs or knurls on the outer side of the nut.

3. A body member tolerance gap adjuster according to claim 1 or 2, characterized in that: A flange plate is fixedly installed on the hollow screw rod, the upper end face of the positioning sleeve is respectively provided with a stop elastic sheet and a stop plate, and the lower end face of the flange plate is provided with a downward protruding portion located between the stop elastic sheet and the stop plate.

4. A vehicle body member tolerance gap adjuster according to claim 3, characterized by: In the rotation direction of the hollow screw rod, the stop plate is located on the right side of the rotation direction of the stop elastic sheet.

5. The vehicle body member tolerance gap adjuster of claim 1 or 2, wherein: A pair of positioning clamping claws are arranged below the outer side of the positioning sleeve.

6. The vehicle body member tolerance gap adjuster of claim 1 or 2, wherein: The central hole of the hollow screw rod is a regular polygon.

7. The vehicle body member tolerance gap adjuster of claim 1 or 2, wherein: A driving clamping spring is installed in the central hole of the hollow screw rod.

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