Curvature regulating member and power supply device

A curvature regulating member comprising:

• a plurality of member pieces to be arranged along a wire harness;
• and
• a flexible connecting part connecting adjacent member pieces,
• wherein the adjacent member pieces are configured to contact each other and thereby regulate curvature of the wire harness on a predetermined plane,
• wherein each of the member pieces includes a recessed part and a projected part, the recessed part being recessed in a direction away from an adjacent member piece located on one side in a longitudinal direction of the wire harness, the projected part being configured to be inserted in the recessed part provided to an adjacent member piece located on another side in the longitudinal direction of the wire harness,
• wherein the recessed part includes a slanted face extending away from the adjacent member piece located on the one side in the longitudinal direction as leaving from both ends of the recessed part in a widthwise direction, the widthwise direction being perpendicular to both of the longitudinal direction and a height direction perpendicular to the plane, and
• wherein the projected part includes a slanted face extending toward the adjacent member piece located on the another side in the longitudinal direction as leaving from both ends of the projected part in the widthwise direction.