Bilateral fixing assembly

By using a double-sided fixing component design and a locking and releasing mechanism of fixing pins and conical pawls, the problem of high resistance in the installation and disassembly of integral plastic stud fasteners is solved, achieving stable fixing and easy disassembly, protecting the component from damage, and adapting to materials of different thicknesses.

CN223825394UActive Publication Date: 2026-01-23COMMERCIAL AIRCRAFT CORP OF CHINA LTD +1
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Patent Information

Application Number
CN202520480625.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-18
Publication Date
2026-01-23
Estimated Expiration
2035-03-18

AI Technical Summary

Technical Problem

Existing integral plastic stud fasteners have high resistance during installation and disassembly, which can easily lead to damage to the fasteners and gaskets, and they are difficult to flexibly handle thermal insulation and sound insulation materials and frames of different thicknesses.

Method used

The system employs a double-sided fixing assembly, including fixing pins, first and second washers, and uses fixing pin positioning baffles and locking tongues to hold the frame. The self-locking effect is achieved by engaging and disengaging the first and second bevel teeth with the pawl, reducing installation and disassembly resistance.

Benefits of technology

It achieves stable fixation during installation and easy disassembly during removal, reducing component damage. It can flexibly handle thermal insulation and sound insulation materials and frames of different thicknesses, with low installation resistance and simple and easy disassembly.

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Abstract

Provided is a double-side fixing assembly which can hold heat insulation and sound insulation materials and the like on the two sides of a frame and the like of an aircraft respectively, can reduce assembling and disassembling resistance and can restrain damage during disassembling. The fixing nail is provided with a positioning blocking piece, a clamping tongue piece, a first conical tooth and a second conical tooth, the first conical tooth is located on one side of the positioning blocking piece, the outer diameter is smaller when the first conical tooth is closer to one side, the clamping tongue piece is located on the other side of the positioning blocking piece and can elastically deform in the radial direction, and the clamping tongue piece is located between the first conical tooth and the second conical tooth from the other side to one side; the second conical tooth is located on the other side of the clamping tongue piece, and the outer diameter of the second conical tooth is smaller when the second conical tooth is closer to the other side of the clamping tongue piece; the first gasket is provided with a first pawl part which is provided with a first pawl and can elastically deform in the radial direction to enable the first pawl to be clamped with or separated from the axial end face of the first bevel gear; and the second gasket is provided with a second pawl part which is provided with a second pawl and can elastically deform in the radial direction to enable the second pawl to be clamped with or separated from the axial end face of the second bevel gear.
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