Combination structure and method of plastic and hard substrate, LED light bracket

Abstract

The invention provides a plastic cement and hard base material combining structure. A combining hole used for being combined with plastic cement is formed in a hard base material, the combining hole comprises a top end, a bottom end and a constriction end, the top end and the constriction end are connected through a first transition section, the bottom end and the constriction end are connected through a second transition section, the cross section width of the top end is D1, the cross section width of the bottom end is D2, the cross section width of the constriction end is d, and in addition, d is smaller than min{D1 and D2}. The combining hole is formed in the hard base material, in addition, the cross section width of the top end and the cross section width of the bottom end of the combining hole are respectively greater than the cross section width of the constriction end, the plastic cement part after the combining hole solidification is equivalent to a buckling element with two large ends and small middle so that the plastic cement part can be tightly buckled on the hard base material, and the risk that a combing part of the hard base material and the plastic cement part generates layered cracking is reduced. The invention also provides an LED (light emitting diode) lamp support frame and a plastic cement and hard base material combining method.

Description

technical field [0001] The invention relates to the technical field of combining plastics with hard substrates, in particular to a combination structure and method for combining plastics and hard substrates, and an LED lamp bracket adopting the combination structure. Background technique [0002] At present, the combination structure of plastic and hard substrate is generally to first increase the roughness of the surface of the hard substrate, then make the molten plastic contact the hard substrate, and then cool and solidify to finally bond the plastic and the hard substrate . However, with this combination structure, if the plastic encounters a large impact, the joint between the hard substrate and the plastic is prone to delamination and cracking. [0003] Therefore, it is necessary to provide a technical means to solve the above defects. Contents of the invention [0004] The purpose of the present invention is to overcome the defects of the prior art, and provide a...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, and provide a combination structure of plastic and hard substrate with a combination hole with a relatively large cross-sectional width at the top and bottom end and a small cross-sectional width at the constricted end, so as to solve the problems in the prior art. When the plastic encounters a large impact, the joint between the hard substrate and the plastic is prone to delamination and cracking; at the same time, the present invention also provides an LED lamp bracket with the combination structure of the plastic and the hard substrate; and, the present invention The invention also provides a method for combining plastic with a hard substrate

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