Method for producing a joint connection between a light-giving/optics plastic component and a metal component

Abstract

The invention relates to a method for producing a joint connection between a light-giving / optics plastic component (1) and a metal component (2) of an illumination device of a vehicle, wherein the method comprises at least the following steps: generating a microstructure (10) in a joining surface of the metal component (2), wherein the microstructure (10) has undercuts in relation to the joining surface; softening the plastic material of the plastic component (1) in a near-surface region of the complementary joining surface by means of heat input; pressing together the plastic component (1) and the metal component (2) with a pressing force (F) in such a way that a part of the softened plastic material penetrates into the undercuts of the microstructure (10); cooling the plastic material of the plastic component (1), thereby restoring the strength of the softened plastic material of the plastic component (1).

Description

technical field [0001] The invention is directed to a method for producing a joint connection between an optically active plastic component and a metal component of a lighting device of a vehicle. Background technique [0002] From DE 10 2014 109 114 A1 an optically active joining complex between a plastic component and a metal component is known. For connecting the plastic component to the metal component, a snap-in hook on a first side and a threaded element on an opposite second side are shown by way of example. This example demonstrates that the usual connection between plastic components and metal components is complex when constructing a lighting device for a vehicle and requires a number of additional components, wherein geometric positive connections such as snap hooks etc. are avoided and / or alternatively an adhesive connection or a clamping connection is used, avoiding threaded elements. The use of retaining elements, such as elastics, etc. is also common. Disa...

AI Technical Summary

Problems solved by technology

Disadvantageously, this results in complex configuration and assembly of the joint connection and often requires several additional components or additional materials, such as screws, elastic elements or adhesives, etc.

[0003] A further disadvantage arises when, for example, in the case of screw connections or riveting, point-like force-conducting connections are produced which form when the composite is mechanically loaded.

The disadvantage is that the applicability of the proposed connection technology can only be transferred to a limited extent, since not every metallic structural element can be produced generatively, especially for cost reasons, and also in The application of further extensions of this method without forming a form-lock between the structural element and the cast component is also unknown

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