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Method of fastening first and second thermoplastic parts, and two-part assembly

A thermoplastic and component technology, used in household components, household appliances, other household appliances, etc., can solve the problems of heating body components, appearance defects of body parts, appearance defects, etc., and achieve the effect of short cooling time

Inactive Publication Date: 2010-03-03
CO PLASTIC OMNIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, when directing heat to flow in the vertical direction of the protrusion, there is a risk of heating the surface of the body element from which the protrusion protrudes, which can lead to cosmetic defects of the body part
[0006] Finally, when the protrusion is crushed towards its base, i.e. perpendicular to the body element, there is a risk of stressing the surface of the element and causing cosmetic defects

Method used

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  • Method of fastening first and second thermoplastic parts, and two-part assembly
  • Method of fastening first and second thermoplastic parts, and two-part assembly
  • Method of fastening first and second thermoplastic parts, and two-part assembly

Examples

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Embodiment Construction

[0035] Consider first 10 and second 12 thermoplastic components of an automotive vehicle. In the example shown in the figures, the first component 10 is a bumper skin 10 and the second component 12 is a reinforcement 12 of the bumper skin 10 .

[0036] The bumper skin 10 includes an exterior face 14 and an opposing face 16 . The bumper skin 10 includes a rib 18 forming a protrusion above the opposite face 16 . The ribs 18 are formed with the housing 10 and are substantially perpendicular to the surface 16 of the first part 10 .

[0037] The stiffener component 12 includes a contact surface 20 and an opposing surface 22 . The part 12 also includes a hole 24 extending completely through the part 12 , ie from one surface 20 to the other surface 22 . The hole 24 is defined by an edge 25 of the contact surface 20 . A portion 27 of the contact surface forms the engagement surface.

[0038] The fastening method of the present invention first includes bringing the reinforcement p...

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PUM

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Abstract

The invention relates to a method of fastening first (10) and second (12) thermoplastic parts of a motor vehicle, the first part (10) having a protuberance (18) projecting from a face (16) and the second part (12) having an engagement surface (27), the method consisting in bringing the second part (12) into contact with the face (16) of the first part (10), in heating the protuberance, and in plastically deforming the protuberance (18) towards the second part so that the second part (12) is gripped between the face (16) of the first part (10) and an end portion (26) of the protuberance (18).

Description

technical field [0001] The invention relates to the technical field of fastening thermoplastic parts, in particular parts of motor vehicles. Background technique [0002] Bumper skins of motor vehicles are known in the prior art, to which various elements, such as reinforcements or supports for sensors, are attached and fastened. One known method of fastening these various elements is boute rollage. [0003] For example, in order to fasten the reinforcement to the bumper skin, it is necessary to provide a protruding protrusion on the concealed face of the bumper skin and to provide an aperture in the reinforcement. The stiffener is then brought into contact with the surface of the bumper skin having the protruding protrusions, with the protrusions passing through the apertures and exposing the end portions. Next, ultrasonic waves generated by an ultrasonic generator completely heat the end portion of the protrusion, and form a rivet head by vertically flattening the protru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/60
CPCB29C66/43B29L2031/3044B29C65/1412B29C65/14B29C65/103B29C2035/0822B29L2031/3055B29C66/836B29C65/08B29C66/8362B29C65/606B29C65/72B29C66/1122B29C66/863B29C66/47B29C65/10B29C65/16B29K2101/12B29C65/567B29C66/41B29C66/545B29C66/73921Y10T29/49915Y10T29/49908
Inventor D·特雷西M·维沃尔德
Owner CO PLASTIC OMNIUM