Patent ID: 8813321

Claim:
A buckle, comprising: a male member including a pair of arms each having an engaged part near a front end; and a hollow female member including, at one end of the hollow female member, an insertion port into which the pair of arms is inserted, and an engaging part, at the other end of the hollow female member, engaging the pair of arms with the engaged parts, wherein the female member includes a first side wall and a second side wall, extending in a flattened direction and being opposed to each other, an opened port opposed to the insertion port at the other end of the hollow female member, a belt attachment part situated away from the opened port, and an opening located between the belt attachment part and the opened port and directly facing the opened port and communicating therewith; the first side wall is shaped such that the pair of arms is not exposed from an edge of the opened port defined by the first side wall in a state where the engaging part is engaged with the engaged parts, when viewed from a plane opposed to an outer surface of the first side wall; the second side wall is shaped such that at least one of the pair of arms is exposed from the opened port defined by the second side wall in the state where the engaging part is engaged with the engaged parts, when viewed from a plane opposed to an outer surface of the second side wall; and the female member is hollow throughout an entire length thereof from the insertion port to the opened port.