Casing for portable device

摘要

A box-shaped metal structure is formed by press-working or the like, and a resin shell is integrally molded to the periphery of the metal structure by extrusion molding a resin. A flexible circuit board for key switches is disposed on a switch-receiving surface of the metal structure. The resin shell and the box-shaped metal structure are not bonded together, but the resin fills the connecting holes in the metal structure, whereby the shell and the metal structure are kept together after molding. A casing for a portable device having a structure suitable for obtaining reduced thickness and size reduction is thereby obtained.

主权项

1. A casing for a portable device, comprising:
an internal metal structure having a first bottomed concave shape, and having a convex portion; and a metal shell that has a frame shape and that is formed by an integral molding of an external material that has greater thermal shrinkage during cooling than a constituent material of the internal metal structure, in an outside region of the internal metal structure and in an inside region connected thereto, wherein the convex portion is disposed at an end of at least one of a plurality of side walls of the internal metal structure, sticks out to an outside of the first bottomed concave shape, and extends into the metal shell.