A buckle having a plug member and a socket member designed to detachably engaged to each other. The plug member includes a base portion, a pair of engaging legs extended from the base portion such that the engaging legs may be resiliently engaged to the socket member, and a guide rod extended from the base portion between the engaging legs. The socket member includes a chamber opened at a leading end thereof, so as to receive the engaging legs and the guide rod of the plug member, and a pair of latching portions defined within the socket member such that respective leading ends of the engaging legs may be latched into the latching portions. The socket member comprises substantially triangular-shaped upper and lower plates having opposite lateral sides gradually converging towards the leading end of the socket so as to form opposite tapered side surfaces of the socket member.
1. A buckle, comprising: a plug member and a socket member detachably engaged to each other, the plug member including a base portion, a pair of engaging legs extended from the base portion such that the engaging legs may be resiliently engaged to the socket member, and a guide rod extended from the base portion between the engaging legs, and the socket member including a chamber opened at a leading end of the socket member so as to receive the engaging legs and the guide rod of the plug member, and a pair of latching portions defined within the socket member such that respective leading ends of the engaging legs may be latched into the latching portions,
wherein the socket member comprises substantially triangular-shaped upper and lower plates having opposite lateral sides gradually converging towards the leading end of the socket so as to form opposite tapered side surfaces of the socket member, each having a slot extended from an entrance of the chamber so as to communicate with an interior of the chamber,
wherein each of the engaging legs includes engaging recesses opened outwardly while being depressed on upper and lower surfaces of the leading end of the engaging leg, such that, when the plug member is engaged to the socket member, the latching portions of the socket member are located on the engaging recesses, and hook-shaped engaging jaws protruded adjacent to the engaging recesses on the upper and lower surfaces of the engaging leg such that the engaging jaws act as side walls for the respective engaging recesses to partially enclose the engaging recesses, respectively.
2. The buckle according to claim 1 , wherein the tapered side surfaces have a convexly rounded surface.
3. The buckle according to claim 1 , wherein the tapered side surfaces have a concavely rounded surface.
4. The buckle according to claim 1 , wherein the engaging legs are extended from the base portion so as to be bent inward in a state of facing each other, so that, when the engaging legs are engaged to the socket member, outer sides of the engaging legs are located to the tapered side surfaces of the socket member, respectively.
5. The buckle according to claim 1 , wherein the plug member has mounting portions formed on upper and lower surfaces of the base portion, respectively, to allow the triangular leading ends of the upper and lower plates of the socket member to be stably mounted on the plug member.
6. The buckle according to claim 1 , wherein the socket member has openings formed at both sides of the upper and lower plates in order to allow the latching portions to be formed by means of molding.
7. The buckle according to claim 1 , wherein the guide rod is extended from a middle of the base portion, and includes shielding flanges, each being extended perpendicular to the guide rod from a leading end of the guide rod while being located adjacent to the leading end of an associated engaging leg, so as to shield an entrance of a space between the engaging leg and the guide rod.
8. The buckle according to claim 7 , wherein the guide rod further includes wings formed along outer side surfaces of the guide walls.