Slide fastener having separable bottom end stop

Abstract

A slide fastener having a separable bottom end stop is provided, which comprises a high quality reinforcement piece in which flexibility thereof is improved and there is no stripping or breakage of the reinforcement piece. Reinforcement pieces overhanging on front surfaces of fastener tapes are provided on side faces of the box pin and insert pin. Each reinforcement piece comprises an inclined portion which is formed in a substantially triangular shape overall toward an outer side edge close to a lower end of each fastener tape. An edge portion of the inclined portion is formed as a slope portion, which slopes gently toward a front surface of the fastener tape.

What is claimed is:  
     
         1 . A slide fastener having a separable bottom end stop in which fastener elements are attached to opposing side edges of a pair of fastener tapes, and the separable bottom end stop being formed of a synthetic resin and comprising a box pin, an insert pin and a box is attached to a lower end of said fastener elements, wherein sheet-like reinforcement pieces, which project from side faces of the box pin and the insert pin and overhang respectively on at least one surface of each of the fastener tapes, are provided; each reinforcement piece has an inclined portion which inclines toward an outer side edge of each fastener tape close to a lower end of the fastener tape; and a space between a lower end and the inclined portion of the reinforcement piece is gradually getting narrow toward an outer side portion of the reinforcement piece.  
     
     
         2 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein the reinforcement piece provided on the other surface of the fastener tape is smaller than the reinforcement piece provided on the one surface of the fastener tape, and both reinforcement pieces nip and hold the fastener tape in the vicinity of one of the side faces of the box pin and the insert pin.  
     
     
         3 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein the reinforcement pieces disposed on both front and rear surfaces of the fastener tapes are formed so as to have the same configuration.  
     
     
         4 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein the inclined portion of the reinforcement piece inclines toward the outer side edge of the fastener tape in a linear form.  
     
     
         5 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein the inclined portion of the reinforcement piece is bent in a inward concave arc-shape.  
     
     
         6 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein an edge portion of the reinforcement piece is formed as a slope portion which slopes downward toward a front surface of the fastener tape.  
     
     
         7 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein the outer side portion, which extends in parallel with the outer side edge of the fastener tape, is formed between the inclined portion and the lower end of the reinforcement piece.  
     
     
         8 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein a portion of the fastener tape, which the outer side portion of the reinforcement piece faces, is formed coarsely so that resins penetrate into the fastener tape.  
     
     
         9 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein a welding yarn is disposed at a portion of the fastener tape, which the outer side portion of the reinforcement piece faces, so that resins are welded.  
     
     
         10 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein a projecting piece is continuously provided with the outer side portion of the reinforcement piece so as to hold and nip the outer side edge of the fastener tape.  
     
     
         11 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein the lower end of the reinforcement piece aligns with the lower end of the fastener tape.  
     
     
         12 . The slide fastener having a separable bottom end stop according to  claim 1 , wherein an entire face of the reinforcement piece, except for a peripheral edge portion of the reinforcement piece, is formed as a mesh.  
     
     
         13 . A slide fastener having a separable bottom end stop in which fastener elements are attached to opposing side edges of a pair of fastener tapes, and the separable bottom end stop being formed of a synthetic resin and comprising a box pin and an insert pin is attached to a lower end of said fastener elements, wherein plate-like reinforcement pieces, which project from side faces of the box pin and insert pin and overhang on at least one surface of each of the fastener tapes, are provided; each reinforcement piece has an inclined portion which inclines toward an outer side edge of each fastener tape close to a lower end of the fastener tape; and a space between a lower end and the inclined portion of the reinforcement piece is gradually getting narrow toward an outer side portion of the reinforcement piece.