| 摘要 |
<p>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.</p> |
