A device for fastening plastic parts to a motor vehicle body

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 19/18 (2006.01) F16B 5/02 (2006.01)

Patent

CA 2696280

The invention relates to a device for fastening plastic parts (10) to a motor vehicle body (12), having an internal thread (14) which is formed on the body (12) and having a screw (16) which has an external thread (18) and which is provided with an oversized head (20), which screw (16) is inserted into the internal thread (14), wherein a cylindrical sleeve (22) is placed between the screw head (20) and the body (12), the inner diameter of which cylindrical sleeve (22) is significantly larger than the outer diameter of the external thread (18) of the screw (16), and wherein a cylindrical sleeve (24) is attached coaxially, by means of its inner edge which faces toward the body (12), to the outer edge, which faces away from the body (12), of the sleeve (22), the inner diameter of which cylindrical sleeve (24) forms a fit with the outer diameter of the sleeve (22), and which cylindrical sleeve (24) ends, at its body-side end, in an outwardly extending disk (26), the outer diameter of which corresponds approximately to the outer diameter of the screw head (20), wherein an opening (28) for receiving the device is provided in the plastic part (10), the inner diameter of which opening (28) is larger than the outer diameter of the sleeve (24) but smaller than the outer diameter of the flat washer or of the oversized screw head (20) and of the disk (26) which is attached to the sleeve (24).

L'invention concerne un dispositif de fixation de pièces (10) en matière plastique sur la carrosserie (12) d'un véhicule automobile, comprenant un taraudage (14) ménagé dans la carrosserie (12) et une vis (16) dotée d'un filetage extérieur (18) et insérée dans le taraudage (14), laquelle vis étant dotée d'une tête (20) surdimensionnée. Une douille cylindrique (22) au diamètre intérieur bien supérieur au diamètre extérieur du filetage extérieur (18) de la vis (16) est placée entre la tête de vis (20) et la carrosserie (12). Le bord extérieur de la douille (22), opposé à la carrosserie (12), présente une douille cylindrique (24) au diamètre intérieur adapté au diamètre extérieur de la douille (22) et montée coaxiale avec son bord intérieur tourné vers la carrosserie (12), ladite douille cylindrique constituant un ajustement et se prolongeant à son extrémité côté carrosserie en un disque (26) s'étendant vers l'extérieur et dont le diamètre extérieur correspond sensiblement au diamètre extérieur de la tête de vis (20). La pièce (10) plastique présente une ouverture (28) pour le logement du dispositif, présente un diamètre intérieur supérieur au diamètre extérieur de la douille (24) mais inférieur au diamètre extérieur de la rondelle ou de la tête de vis (20) surdimensionnée et du disque (26) placé sur la douille (24) étant prévue dans la pièce (10) en matière plastique.

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