Patent ID: 8677576

Claim:
A side release buckle comprising: a plug; and a socket into which the plug is inserted for engagement, wherein the plug comprises: a base being provided with a belt attachment; a pair of legs projecting from the base; an engaging portion being formed to each of the legs; and a connecting portion configured to connect the legs to each other, the socket comprises: a body being provided with a belt attachment and an insertion opening; a top portion extending from a forwardmost part of the top portion at the insertion opening to a rearmost part of the top portion, and a bottom portion extending from a forwardmost part of the bottom portion at the insertion opening to a rearmost part of the bottom portion; a housing space being formed in the body and capable of housing the legs inserted from the insertion opening; an engaged portion being formed in the body and engageable with the engaging portion; a cutout being formed from an edge of the belt attachment toward the insertion opening, the cutout being formed over an area surrounded by the pair of legs and the connecting portion when the pair of legs and the connecting portion are housed in the housing space while the engaging portion and the engaged portion are engaged, the socket further comprises at least one protrusion projecting from an inner surface of the top portion into the housing space and projecting from an inner surface of the bottom portion into the housing space, wherein the at least one protrusion extends at least partially along a center of the rearmost part of the top portion and at least partially along a center of the rearmost part of the bottom portion.