Abstract: A buckle may include male and female parts. In a case (A) where only the female part is attached to a slider of a slide fastener, the male part includes: a pair of arms respectively provided with locking protrusions; and a connecting rod connecting respective base ends of the pair of arms. The connecting rod is configured to curve away from a space between the locking protrusions of the arms when the arms are bent such that the locking protrusions approach one another. In a case (B) where the male part is attached to a slider of a slide fastener, the male part includes: a slider-holding frame configured to hold the slider; and a pair of arms that extend in the same direction from the slider-holding frame and are respectively provided with locking protrusions. The slider-holding frame includes a frame portion protruded into a space between the pair of arms toward a space between the locking protrusions.

Abstract: A buckle may include male and female parts. In a case (A) where only the female part is attached to a slider of a slide fastener, the male part includes: a pair of arms respectively provided with locking protrusions; and a connecting rod connecting respective base ends of the pair of arms. The connecting rod is configured to curve away from a space between the locking protrusions of the arms when the arms are bent such that the locking protrusions approach one another. In a case (B) where the male part is attached to a slider of a slide fastener, the male part includes: a slider-holding frame configured to hold the slider; and a pair of arms that extend in the same direction from the slider-holding frame and are respectively provided with locking protrusions. The slider-holding frame includes a frame portion protruded into a space between the pair of arms toward a space between the locking protrusions.

Abstract: A buckle with an enhanced efficiency in removing a foreign substance is provided. The buckle includes: a plug; and a socket provided with an insertion opening into which the plug is to be inserted. The socket includes: a pair of front pieces disposed side by side in a width direction intersecting with an insertion direction of the plug; a back piece disposed to face each of the front pieces; and a bottom piece that connects each of the front pieces and the back piece. A slit defined between the pair of front pieces extends in the insertion direction from the insertion opening across the bottom piece and the front pieces of the socket. Due to the presence of the slit, a cross section of the socket intersecting with the insertion direction is in a C-shape.

Abstract: A buckle with an enhanced efficiency in removing a foreign substance is provided. The buckle includes: a plug; and a socket provided with an insertion opening into which the plug is to be inserted. The socket includes: a pair of front pieces disposed side by side in a width direction intersecting with an insertion direction of the plug; a back piece disposed to face each of the front pieces; and a bottom piece that connects each of the front pieces and the back piece. A slit defined between the pair of front pieces extends in the insertion direction from the insertion opening across the bottom piece and the front pieces of the socket. Due to the presence of the slit, a cross section of the socket intersecting with the insertion direction is in a C-shape.

Abstract: A side release buckle includes a plug and a socket into which the plug is inserted for engagement. The plug includes: a base provided with a belt attachment; a pair of legs projecting from the base; an engaging portion formed to the legs; and a connecting portion connecting the legs to each other. The socket includes: a body provided with a belt attachment and an insertion opening; a housing space formed in the body and housing the legs inserted from the insertion opening; an engaged portion formed in the body and engageable with the engaging portion; and a cutout dented toward the insertion opening from an edge of the belt attachment. The cutout is formed over an area surrounded by the legs and the connecting portion when the legs and the connecting portion are housed in the housing space while the engaging portion and the engaged portion are engaged.

Abstract: A side release buckle includes a plug and a socket into which the plug is inserted for engagement. The plug includes: a base provided with a belt attachment; a pair of legs projecting from the base; an engaging portion formed to the legs; and a connecting portion connecting the legs to each other. The socket includes: a body provided with a belt attachment and an insertion opening; a housing space formed in the body and housing the legs inserted from the insertion opening; an engaged portion formed in the body and engageable with the engaging portion; and a cutout dented toward the insertion opening from an edge of the belt attachment. The cutout is formed over an area surrounded by the legs and the connecting portion when the legs and the connecting portion are housed in the housing space while the engaging portion and the engaged portion are engaged.

Abstract: A side release buckle includes a plug and a socket into which the plug is inserted for engagement. The plug includes: a base provided with a belt attachment; a pair of legs projecting from the base; an engaging portion formed to the legs; and a connecting portion connecting the legs to each other. The socket includes: a body provided with a belt attachment and an insertion opening; a housing space formed in the body and housing the legs inserted from the insertion opening; an engaged portion formed in the body and engageable with the engaging portion; and a cutout dented toward the insertion opening from an edge of the belt attachment. The cutout is formed over an area surrounded by the legs and the connecting portion when the legs and the connecting portion are housed in the housing space while the engaging portion and the engaged portion are engaged.

Abstract: A side release buckle includes a plug and a socket into which the plug is inserted for engagement. The plug includes: a base provided with a belt attachment; a pair of legs projecting from the base; an engaging portion formed to the legs; and a connecting portion connecting the legs to each other. The socket includes: a body provided with a belt attachment and an insertion opening; a housing space formed in the body and housing the legs inserted from the insertion opening; an engaged portion formed in the body and engageable with the engaging portion; and a cutout dented toward the insertion opening from an edge of the belt attachment. The cutout is formed over an area surrounded by the legs and the connecting portion when the legs and the connecting portion are housed in the housing space while the engaging portion and the engaged portion are engaged.