Hose clamp

A hose clamp connecting a hose to piping, comprising:

• a body formed by crossing both ends of a band-shaped spring piece on a circumferential plane while the spring piece is bent into an annular shape, the body being elastically deformable between a closed-diameter state and an opened-diameter state;
• a first grip piece formed by raising one of the ends of the body radially outward with respect to the body;
• a second grip piece formed by raising the other end of the body radially outward with respect to the body so as to be opposed to the first grip piece;
• a lock portion provided on either one of the first or second grip piece so as to extend toward the other grip piece;
• a lock receiving portion provided on said other grip piece side and elastically displaced together with the lock portion radially with respect to the body relative to each other when the first and second grip pieces are caused to come close to each other along a circumferential direction, thereby being locked to the lock portion by a subsequent return operation, the lock receiving portion holding the body in the opened-diameter state when in a locked state;
• and
• a restricting portion provided on one of the ends of the body so as to be located at a position differing from the lock receiving portion, the restricting portion being capable of restricting displacement of both grip pieces in reverse of the direction of the elastic displacement caused during coming close to each other, by abutting against a radially opposed part of the other end of the body, wherein either the first or second grip piece formed with the restricting portion has a distal end located lower than a distal end of the other grip piece with respect to the radial direction of the body when the body is in the closed-diameter state.