Fixing device

Abstract

The present invention provides a fastener not rattling even when the plate thickness of a plate material is small, and providing excellent workability even when the plate thickness of the plate material is large. Positions of recessed parts 32 and 34 formed in a pin 18 are changed in the axial direction of the pin 18, and arranged alternately at intervals of 90 degree in the circumferential direction of the pin 18. Also, positions of projections 50A and 52A formed on leg pieces 50 and 52 of a grommet 16 are changed in the axial direction of a leg 48 so that projections can be locked to the recessed parts 32 and 34 so as to change the spread amount of the leg pieces 50 and 52 in order to extend outward the leg piece 50 more than the leg piece 52. Accordingly, since the plate material 56 can be held between at least a flange 40 and the leg piece 50 when a molded ceiling 54 is absent, the fastener 12 does not rattle. On the other hand, when the molded ceiling 54 is present, though the insertion resistance on the leg piece 50 side is large, the insert force for the pin 18 is reduced smaller than that in a case that the plate material 56 is held by the leg piece 50 and the leg piece 52 at the same spread angle since the insertion resistance for the leg piece 52 side is small. Accordingly, workability can be improved by setting the insertion force to a proper one not applying an undue load on a worker.

Description

technical field [0001] The present invention relates to a fixing device used when attaching a roof panel to a roof panel of a vehicle roof surface or the like. Background technique [0002] Conventionally, a ceiling panel attached to a roof panel of the vehicle ceiling surface is provided on the ceiling surface of the vehicle interior. In this way, the roof panel can be mounted to the roof panel with a fastening arrangement consisting of pins and grommets. [0003] For example, when attaching a ceiling panel using the fixing device of Patent Document 1 (JP-A-11-27052), first, a pin is inserted into a cylindrical grommet so that the pin cannot be pulled out from the grommet. Next, insert the four legs of the grommet into the respective mounting holes formed on the roof panel and ceiling panel, and press the pins into the depth of the grommet. [0004] Here, a deployment point smaller than the outer diameter of the pin is provided on the inner surface of the opposite leg, an...

AI Technical Summary

Problems solved by technology

[0008] However, the insertion force when inserting the pin into the grommet with and without the formed ceiling is large, and if the insertion force is too large, the burden on the operator is also large, causing the Reduced operability

On the other hand, if the insertion force is set based on the case with a molded ceiling, looseness will occur without a molded ceiling

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