US 12,623,433 B2 · Metal member, metal-resin joined body, and method for manufacturing same

Abstract

Provided is a metal-resin joined body having a high joint strength and sufficient airtightness and a metal member for obtaining the same. The metal member includes a metal base material made of a metal and a marking pattern having an uneven part formed on a surface of the metal base material, in which the marking pattern is one continuous straight line or curved line, a plurality of the marking patterns is formed to be adjacent to each other and run parallel, and, in a direction orthogonal to a running direction of the plurality of marking patterns, a maximum height roughness Rz of unevenness of the uneven parts and an average interval Rsm of the unevenness by the uneven parts have a relationship of 45≤(180/π)×arctan(Rz/(Rsm/2))≤75, and a metal-resin joined body includes a resin molded body formed on a surface of this metal member.

Claims14

Dependent claims

A metal member comprising:

a metal base material made of a metal;
and
a marking pattern having an uneven part formed on a surface of the metal base material,
wherein the marking pattern is one continuous straight line or curved line,
a plurality of the marking patterns is formed to be adjacent to each other and run parallel, and,
in a direction orthogonal to a running direction of the plurality of marking patterns, a maximum height roughness Rz of unevenness of the uneven parts and an average interval Rsm of the unevenness by the uneven parts have a relationship of 45≤(180/π)×arctan (Rz/(Rsm/2))≤75.

3 more elements

A method for manufacturing a metal member, comprising:

an irradiation step of irradiating a surface of a metal base material made of a metal with laser light to form a marking pattern having an uneven part that continues along an irradiation trajectory of the laser light on the surface of the metal base material,
to manufacture a metal member having a plurality of the marking patterns formed on the surface of the metal base material,
wherein the marking pattern is one continuous straight line or curved line,
in the irradiation step, the plurality of marking patterns that is adjacent to each other and runs parallel is formed by irradiation of adjacent portions with the laser light, and,
in a direction orthogonal to the irradiation trajectories of the plurality of marking patterns, a maximum height roughness Rz of unevenness of the uneven parts and an average interval Rsm of the unevenness by the uneven parts have a relationship of 45≤(180/π)×arctan (Rz/(Rsm/2))≤75.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/690,141Filed 7 Oct 2022

Priority

JP 2021-16973415 Oct 2021

Published

US 2024/0383224 A121 Nov 2024

Granted

12 May 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification24 codes

B32B 3/30
Characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or…
B23K 26/352
Working by laser beam, e.g. welding, cutting or boring: for surface treatment
B29C 45/14
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor: incorporating…
B29C 45/14311
Incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles: using means for bonding the coating to…

Metal member, metal-resin joined body, and method for manufacturing same

Life of this patent

Metal member, metal-resin joined body, and method for manufacturing same

Life of this patent

Abstract

Claims14