Connection structural body

The present invention provides a connection structure. Conventionally, such a problem is generated in the aluminum electric wire and the crimping terminal connection structure of the noble metal of aluminum present in relation to the connection by the electrical erosion. In order to solve this problem, the aluminum electric wire distal end portion (202a) covered with a cover, for example, solder (203). Further, in the crimp terminal or the like of a copper alloy (10) a pressure contact state, the rear end of the aluminum electric wire tip portion (202a) to (201a) to the core wire crimping portion (12) from the distal end portion of the insulating cover a state of being covered with a solder (203) without a gap between the cover portion of the embodiment of the crimp portion (12) connected to the core wire is connected. Thus, the aluminum electric wire distal end portion (202a) is covered with a solder (203) covering, it is possible to provide a low cost and amount of work connection structure body, the aluminum electric wire to prevent the distal end portion is exposed from the covering wire (200) (202a) is exposed to water droplets such as moisture, prevent or suppress the occurrence of galvanic corrosion and has sufficient conductivity function.