Abstract: The present invention relates to a portable computer on which a communication device can be mounted. Its object lies in maintaining the communication device more conveniently when the portable computer is in use by mounting the communication device on the portable computer. The latter comprises a main body and a battery mounted in rotatable fashion, centering around the main body, and a communication device mounting part for mounting the communication device on a part formed by the main body and the battery.
Abstract: In the metal piece 32 which diffuses into the fuse element so that an alloy layer is generated, there is formed an expanding slot 30, which is inserted and pressured in the fusing portion 25b of the fusible body 25 which forms the fuse element. Due to the foregoing, the metallic mass 32 of low fusing point is fixed to the fusible body 25 while it surrounds the circumferential surface of the fusing portion 25b.