Hose clamps

A hose clamp comprising:

• a clamp body comprising a band-like resilient member curved into a ring shape and having a first operation piece and a second operation piece at opposite sides to each other with respect to a circumferential direction;
• a pair of legs defining a slot therebetween in the first operation piece, wherein the second operation piece protrudes through the slot;
• an engaging portion formed on the second operation piece;
• a receiving portion formed on the first operation piece and capable of engaging with the engaging portion, wherein the engaging portion and the receiving portion can relatively move between an engaging position for engaging with each other and a disengaging position;
• and
• a slide guide portion formed on the second operation piece;
• wherein when the engaging portion and the receiving portion relatively move from the engaging position to the disengaging position, the slide guide portion slidably contacts with one of the legs;
• wherein the engaging portion and the slide guide portion are disposed on the same side with respect to a width direction of the second operation piece, and wherein the first operation piece has a guide edge at one of the legs, the guide edge is inclined outwardly with respect to the width direction toward an end of the first operation piece, and the slide guide portion slidably contacts with the one of the legs via the guide edge.