Fastener of door trim panel

Abstract

The invention belongs to the field of car connectors, and particularly relates to a fastener of a door trim panel. The technical scheme for effectively preventing the fastener from being scratched during assembly and guaranteeing stability of insertion force of the fastener includes that the fastener comprises a pulley-shaped groove disc and a restraining ring, one outer end face of the groove disc extends outwards along the axis of the disc surface to form a bolt portion, the bolt portion is in the shape of a spindle integrally and capable of closing elastically and resetting in the radial direction, the restraining ring is in socket fit with the bolt portion, and the inner diameter of the restraining ring is equal to or slightly smaller than the bore diameter of preformed holes on sheet metal parts. Another technical scheme for realizing the structural performance while bringing convenience to assembling in production includes that the fastener comprises a groove disc and a restraining ring, the groove disc extends outwards to form a bolt portion, the bolt portion comprises elastic rib plates, the elastic rib plates surround to form the bolt portion which is in the shape of a spindle, the inner diameter of the restraining ring is equal to or slightly smaller than the bore diameter of preformed holes on sheet metal parts, and the inner wall of the restraining ring is in easy-breakage connection with the top end of the bolt portion.

Description

technical field [0001] The invention belongs to the field of automobile connectors, and in particular relates to a buckle for a door trim panel. Background technique [0002] Door trim panel buckles have been widely used as connecting elements for the fastening between body sheet metal parts and trim panels. Its specific structure is basically as figure 1 As shown, it includes a pulley-shaped grooved disk 1. One end surface of the grooved disk 1 extends outward along the axis of the disk surface to form a latch part 2. Several arched expansion ribs 2a are arranged in the axial direction of the latch part 2. The expansion ribs 2a The direction of is consistent with the extending direction of the plug part 2 . In actual use, rely on the groove part 1a arranged on the outer periphery of the groove plate 1 to form a plug-in fit with the decorative plate A, and then insert the latch part 2 into the prefabricated hole on the sheet metal part B to form a snap-fit ​​fit; Since th...

AI Technical Summary

Problems solved by technology

The buckle of the above structure is fast, convenient and easy to operate as a whole. However, its defects cannot be ignored: because in the assembly process of sheet metal parts, it is still inevitable to rely on the prefabricated hole pattern and buckle on the sheet metal parts. The direct hard contact of the pin part is used to achieve the purpose of deformation assembly. The friction between the two is extremely high during assembly. At the same time, due to the process burrs on the sheet metal parts and the existence of actual human operation factors, it is often easy to cause scratches on the buckle pin part. , which puts a severe test on the stability and reliability of the buckle as a connector; once scratches occur, its service life will be greatly shortened, which will bring great trouble to the actual operation of the staff

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