Connection terminal with plurality of bending parts having thin-walled portions

A connection terminal, comprising:

• an electric wire connection part to which an electric wire is electrically connected by ultrasonic bonding, and
• an electric connection part integrated with the electric wire connection part and electrically connected to a mating terminal, wherein
• the electric connection part includes a box unit which is formed in a cylindrical shape by bending a plurality of bending parts and into which the mating terminal is capable of being inserted, the box unit extending along a length direction,
• a thin-walled portion having a thickness less than other parts of the box unit is continuously provided along each of the bending parts, and
• at least one of the thin-walled portions is arranged at a distance in the length direction from an end portion of at least one of the bending parts of the box unit respectively.