Patent ID: 8235735

Claim:
A terminal joining structure comprising: a terminal including a thin tubular barrel portion and a thick tubular flange portion that is integrally formed at an axis-direction end of the barrel portion; a conductor substrate on which a through-hole for inserting the barrel portion is opened; and a ring that contacts with the and fits on the barrel portion, wherein a substrate-side chamfer is formed at inner diameter of the ring on an end portion of the conductor substrate, wherein an outside chamfer is formed at inner diameter of the ring on opposite side of the conductor substrate, wherein a taper that increases in diameter toward the flange portion is formed on the barrel portion, diameter of a larger-diameter portion of the taper being larger than inner diameter of the through-hole, wherein a rim of the through-hole of the conductor substrate is pressed to the substrate-side chamfer by the taper that is formed on the barrel portion, and gets adhered to the substrate-side chamfer; and moves inside a gap between the taper of the barrel portion and the substrate-side chamfer of the ring, and gets tightly fixed thereat, and the terminal is caulked to cause radially outward expansion of an open end side of the barrel portion along the outside chamfer, and is fixed to the conductor substrate together with the ring.