Abstract: A cover material attachment includes: a base to be installed in a groove of a cushion material; a first support and a second support that are provided upright on the base toward an opening of the groove, and are opposed to each other in a width direction of the groove; a first protrusion and a second protrusion that respectively protrude from the first and second supports in respective directions that bring the first and second protrusions closer to each other, and are to be engaged with an engaging member; and a first frame and a second frame that are provided upright on the base toward the opening of the groove and are opposed to each other in the width direction of the groove. The first and second frames each include a guide configured to guide the engaging member to a space between the first protrusion and the second protrusion.

Abstract: A cover-material fixing clip includes: a chuck having a base portion, a first holding piece and a second holding piece; a hook configured to be engaged with a wire to be located in a groove of a cushion material; and an engagement opening defined between the chuck and a leading end of the hook. The base portion, the first holding piece and the second holding piece define a retention groove for holding the held body attached to the cover material. The engagement opening has an opening dimension in a range from 50% to 80% of a width of the retention groove.

Abstract: Fastening part includes: a two-dimensional arrangement of engagement elements including a plurality of engagement elements arranged corresponding to a plurality of lattice points of a planar lattice; a plurality of first ribs; a plurality of second ribs, and a plurality of apertures formed in a fastening region in which the two-dimensional arrangement is provided. The first rib connects the engagement elements adjacently arranged in a first direction. The second rib connects the engagement elements adjacently arranged in a second direction that is different from the first direction. The plurality of first ribs and/or the plurality of second ribs is arranged to allow the plurality of apertures to include two or more apertures each having an aperture area corresponding to two or more unit cells of the planar lattice.

Abstract: A buckle with a string adjustment portion includes a plug and a socket. The plug includes: a tightening string member attachment portion configured to slidably lock a string member and adjust a length of the string member; and leg portions which are inserted into and engaged with the socket. The socket includes a fitting portion including an insertion opening. An insertion hole through which the string member is inserted is formed to penetrate the tightening string member attachment portion, and a portion connecting the leg portions side of the insertion hole serves as a second bar. The second bar is located on an insertion direction side of the leg portions with respect to a position where an end portion of the plug and the insertion opening of the socket are abutted against each other, in a state where the leg portions are engaged with the socket.

Abstract: There is provided a string stopper including: a plug including: a plug base portion which includes plate-shaped portions and connection portion connecting the plate-shaped portions; a leg portion which includes a protruding portion; and a plug opening which is formed from the connection portion to both sides of the leg portion; and a socket including: a socket base portion; and a socket opening which is formed of a hole having an inclined surface, and which is configured to accommodate a tip end of the protruding portion. When a string-shaped member is installed, the string-shaped member passes between the protruding portion and the inclined surface, the string-shaped member passing through the plug opening, exiting from the plug through a side of the leg portion, passing through the socket opening and exiting from the socket.

Abstract: A cover-material fixing clip includes: a chuck having a base portion, a first holding piece and a second holding piece; a hook configured to be engaged with a wire to be located in a groove of a cushion material; and an engagement opening defined between the chuck and a leading end of the hook. The base portion, the first holding piece and the second holding piece define a retention groove for holding the held body attached to the cover material. The engagement opening has an opening dimension in a range from 50% to 80% of a width of the retention groove.

Abstract: There is provided a string stopper including: a plug including: a plug base portion which includes plate-shaped portions and connection portion connecting the plate-shaped portions; a leg portion which includes a protruding portion; and a plug opening which is formed from the connection portion to both sides of the leg portion; and a socket including: a socket base portion; and a socket opening which is formed of a hole having an inclined surface, and which is configured to accommodate a tip end of the protruding portion. When a string-shaped member is installed, the string-shaped member passes between the protruding portion and the inclined surface, the string-shaped member passing through the plug opening, exiting from the plug through a side of the leg portion, passing through the socket opening and exiting from the socket.

Abstract: A buckle with a string adjustment portion includes a plug and a socket. The plug includes: a tightening string member attachment portion configured to slidably lock a string member and adjust a length of the string member; and leg portions which are inserted into and engaged with the socket. The socket includes a fitting portion including an insertion opening. An insertion hole through which the string member is inserted is formed to penetrate the tightening string member attachment portion, and a portion connecting the leg portions side of the insertion hole serves as a second bar. The second bar is located on an insertion direction side of the leg portions with respect to a position where an end portion of the plug and the insertion opening of the socket are abutted against each other, in a state where the leg portions are engaged with the socket.

Abstract: Provided is a buckle including a plug and a socket. The plug includes a pair of leg portions, each of which is provided with an engaging portion, and outer and inner leg pieces extending while opposing each other. In the vicinity of a distal end portion of the leg portion, the outer and inner leg pieces are connected to each other by a distal end connection portion. On a base end portion of the leg portion, the outer and inner leg pieces are connected to each other by an arm portion. Opposing arm distal end portions of the arm portions are formed to define a slit having a predetermined space between the leg portions. The opposing arm distal end portions are connected to guide portions extending in a protruding direction of the leg portions. The pair of leg portions is provided to be swingable across the slit.

Abstract: Provided is a buckle including a plug and a socket. The plug includes a pair of leg portions, each of which is provided with an engaging portion, and outer and inner leg pieces extending while opposing each other. In the vicinity of a distal end portion of the leg portion, the outer and inner leg pieces are connected to each other by a distal end connection portion. On a base end portion of the leg portion, the outer and inner leg pieces are connected to each other by an arm portion. Opposing arm distal end portions of the arm portions are formed to define a slit having a predetermined space between the leg portions. The opposing arm distal end portions are connected to guide portions extending in a protruding direction of the leg portions. The pair of leg portions is provided to be swingable across the slit.

Abstract: There is provided a buckle including a plug and a socket. The plug includes a plug-side base part, a pair of leg parts, and a pair of engagement protrusions. The socket includes a socket-side base part, an upper plate, a lower plate, upper side wall parts, lower side wall parts, engagement stepped portions, slits, and guide surfaces. A dimension of the pair of engagement protrusions in the upward and downward direction is set to be greater than a dimension of each of the slits in the width direction.

Abstract: A side release buckle includes: a plug; and a socket, the plug including: a base; a pair of legs; and engaging portions, the socket including: a body; an insertion opening; a housing space; engaged portions; and a pair of guide surfaces. The guide surfaces, which are formed on an inner surface of the housing space and extend in an insertion direction of the legs while being opposed to each other, each include: a squeezing portion formed continuously with corresponding one of the engaged portions; and a guiding portion formed between the squeezing portion and the insertion opening. An interval between the guiding portions-near the engaged portions is wider than an interval between the squeezing portions near the engaged portions. An inclination angle of each guiding portion to an insertion direction of the plug is smaller than an inclination angle of each of the squeezing portion to the insertion direction.

Abstract: A side release buckle includes: a plug; and a socket, the plug including: a base; a pair of legs; and engaging portions, the socket including: a body; an insertion opening; a housing space; engaged portions; and a pair of guide surfaces. The guide surfaces, which are formed on an inner surface of the housing space and extend in an insertion direction of the legs while being opposed to each other, each include: a squeezing portion formed continuously with corresponding one of the engaged portions; and a guiding portion formed between the squeezing portion and the insertion opening. An interval between the guiding portions-near the engaged portions is wider than an interval between the squeezing portions near the engaged portions. An inclination angle of each guiding portion to an insertion direction of the plug is smaller than an inclination angle of each of the squeezing portion to the insertion direction.

Abstract: There is provided a buckle including a plug and a socket. The plug includes a plug-side base part, a pair of leg parts, and a pair of engagement protrusions. The socket includes a socket-side base part, an upper plate, a lower plate, upper side wall parts, lower side wall parts, engagement stepped portions, slits, and guide surfaces. A dimension of the pair of engagement protrusions in the upward and downward direction is set to be greater than a dimension of each of the slits in the width direction.

Abstract: A side release buckle includes: a plug; and a socket, the plug including: a base; a pair of legs; and engaging portions, the socket including: a body; an insertion opening; a housing space; engaged portions; and a pair of guide surfaces. The guide surfaces, which are formed on an inner surface of the housing space and extend in an insertion direction of the legs while being opposed to each other, each include: a squeezing portion formed continuously with corresponding one of the engaged portions; and a guiding portion formed between the squeezing portion and the insertion opening. An interval between the guiding portions near the engaged portions is wider than an interval between the squeezing portions near the engaged portions. An inclination angle of each guiding portion to an insertion direction of the plug is smaller than an inclination angle of each of the squeezing portion to the insertion direction.