Integrated charging port cover tolerance regulator

Abstract

The utility model discloses an integrated charging port cover tolerance regulator which is mainly composed of a fixing nut and a hollow bolt, a step-shaped through hole is formed in the center of the fixing nut, adjusting threads are arranged on the upper portion of the step-shaped through hole, fastening threads are arranged on the lower portion of the step-shaped through hole, and the hollow bolt is arranged on the fixing nut. The tolerance adjuster is characterized in that a fixing nut is arranged between the cover body and the connecting piece, the fixing nut is in threaded connection with the hollow bolt through adjusting threads arranged on the upper portion of the fixing nut, and an anti-loosening structure and an anti-rotating structure are arranged on the outer side of the fixing nut. The axial surface difference existing in the installation process can be compensated and adjusted, and the installation requirement of the integrated charging port cover is met.

Description

Technical Field

[0001] This utility model relates to the technical field of fasteners, and more specifically to the technical field of tolerance adjusters for fasteners. Background Technology

[0002] Tolerance adjusters are important industrial fastening components widely used in various scenarios requiring precise control of installation dimensions and positions. Their main function is to adjust and compensate for dimensional tolerances during installation, thereby improving product accuracy and stability. New energy vehicles are one of the key application areas for tolerance adjusters. Currently, the installation process of integrated charging port covers for new energy vehicles presents the following technical problems: First, during installation, there is an axial surface difference between the mounting components of the charging port cover, requiring compensation and adjustment; second, the connecting parts are made of plastic, and the space between them is limited, making traditional riveting or snap-fit ​​installation unsuitable and failing to meet the mechanical requirements of axial fastening force. Therefore, we need to design a novel tolerance adjuster to solve these technical problems. Utility Model Content

[0003] This invention provides an integrated charging port cover tolerance adjuster to solve the aforementioned technical problems. It not only adjusts and compensates for axial surface differences that occur during the installation of the integrated charging port cover, but also features a simple installation method and can withstand the required axial tightening force.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] The integrated charging port cover tolerance adjuster mainly consists of a fixing nut and a hollow bolt. The fixing nut has a stepped through hole in the center, with an adjustment thread at the top and a fastening thread at the bottom. The fixing nut is threaded to the hollow bolt through the adjustment thread at the top. The fixing nut has an anti-loosening structure and an anti-rotation structure on its outer side.

[0006] Preferably, the anti-loosening structure is such that the fixing nut is in the shape of an "I" or has multiple annular grooves on the outside of the fixing nut.

[0007] Preferably, the anti-rotation structure is a polygonal shape on the outer side of the fixing nut, or vertical straight teeth, helical teeth, or knurling are provided on the outer side of the fixing nut.

[0008] Preferably, a drive retaining ring is installed inside the hollow bolt.

[0009] Preferably, the cross-section of the drive snap ring is a regular polygon.

[0010] Preferably, the hollow bolt has a regular polygonal structure inside.

[0011] Preferably, the upper end of the hollow bolt is provided with a flange face.

[0012] Preferably, a damping O-ring is sleeved on the hollow bolt, and the damping O-ring is located between the hollow bolt and the fixing nut.

[0013] The beneficial effects achieved by the technical solutions of the utility model are as follows:

[0014] 1. When the integrated charging port cover is installed, the axial surface difference existing during installation can be compensated and adjusted by installing the tolerance adjuster between the cover body and the connecting piece, so that the installation requirements of the integrated charging port cover are met.

[0015] 2. By arranging the anti-loosening structure and the anti-rotation structure on the outer side of the fixing nut, the tolerance adjuster and the plastic connecting piece are directly injection molded into an integrated structure during use, which not only effectively solves the problem of limited installation space, but also, after adjustment and compensation, the sheet metal directly contacts the tolerance adjuster, can bear the required axial fastening force, meets the mechanical requirements during installation, and in addition, the tolerance adjuster will not rotate and loosen during fastening with the bolt. BRIEF DESCRIPTION OF DRAWINGS

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

[0017] Figure 2 is Figure 1 a structural schematic view of the utility model after disassembly;

[0018] Figure 3 is Figure 1 a full-section structural schematic view of the fixing nut of the utility model.

[0019] 1. fixing nut; 2. hollow bolt; 3. adjusting thread; 4. fastening thread; 5. plastic connecting piece; 6. driving snap spring; 7. flange face; 8. damping O-ring; DETAILED DESCRIPTION

[0020] is Figure 1 , Figure 2 and Figure 3As shown, the integrated charging port cover tolerance adjuster mainly consists of a fixing nut 1 and a hollow bolt 2. The fixing nut 1 has a stepped through hole at its center. An adjusting thread 3 is provided at the upper part of the stepped through hole, and a fastening thread 4 is provided at the lower part. The fixing nut 1 is threadedly connected to the hollow bolt 2 through the adjusting thread 3, thereby achieving adjustment and compensation for surface differences. The outer side of the fixing nut 1 is provided with an anti-loosening structure and an anti-rotation structure. The anti-loosening structure is either an "I" shape or has multiple annular grooves on its outer side. The anti-rotation structure is either polygonal on the outer side of the fixing nut 1 or has vertical straight teeth, helical teeth, or knurling on its outer side. In use, the tolerance adjuster and the plastic connector 5 are directly injection molded into an integral structure, which not only effectively solves the problem of limited installation space, but also ensures that after adjustment and compensation, the sheet metal is in direct contact with the tolerance adjuster and can bear the required axial tightening force, meeting the mechanical requirements during installation. In addition, it can also ensure that the tolerance adjuster will not rotate or loosen when tightened with bolts. A drive snap ring 6 is installed inside the hollow bolt 2. The cross-section of the drive snap ring 6 is a regular polygon. The bolt drives the hollow bolt 2 to rotate under the action of the drive snap ring 6, realizing surface difference adjustment and compensation. Of course, the drive snap ring 6 can also be replaced by setting a regular polygon structure inside the hollow bolt 2. A flange surface 7 is provided at the upper end of the hollow bolt 2. A damping O-ring 8 is fitted on the hollow bolt 2. The damping O-ring 8 is located between the hollow bolt 2 and the fixing nut 1. The damping O-ring 8 can prevent the hollow bolt 2 from rotating freely before installation.

[0021] Installation requirements: First, injection mold the plastic connector 5 and the fixing nut 1 of this tolerance adjuster into one piece. Then, screw the hollow bolt 2 with the drive snap ring 6 and the damping O-ring 8 into the fixing nut 1 to the appropriate position.

Claims

1. An integrated charging port cover tolerance adjuster characterized by: It is mainly composed of a fixing nut and a hollow bolt. The fixing nut has a stepped through hole in the center. The upper part of the stepped through hole is provided with an adjusting thread, and the lower part of the stepped through hole is provided with a fastening thread. The fixing nut is threadedly connected to the hollow bolt through the adjusting thread on the upper part. The outer side of the fixing nut is provided with an anti-loosening structure and an anti-rotation structure.

2. The one-piece charge port door tolerance adjuster of claim 1, wherein: The anti-loosening structure is either an "I" shaped fixed nut or has multiple annular grooves on the outside of the fixed nut.

3. The one-piece charge port door tolerance adjuster of claim 1, wherein: The anti-rotation structure is a polygonal shape on the outside of the fixing nut, or it is provided with vertical straight teeth, helical teeth or knurling on the outside of the fixing nut.

4. The one-piece charge port door tolerance adjuster of claim 1, 2, or 3, wherein: A drive retaining ring is installed inside the hollow bolt.

5. The one-piece charge port door tolerance adjuster of claim 4, wherein: The cross-section of the drive circlip is a regular polygon.

6. The one-piece charge port door tolerance adjuster of claims 1, 2, or 3, wherein: The hollow bolt has a regular polygonal structure inside.

7. The one-piece charge port door tolerance adjuster of claims 1, 2, or 3, wherein: The upper end of the hollow bolt is provided with a flange face.

8. The one-piece charge port door tolerance adjuster of claims 1, 2, or 3, wherein: A damping O-ring is fitted onto the hollow bolt, and the damping O-ring is located between the hollow bolt and the fixing nut.

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