Bottom end stop for slide fastener

Abstract

A bottom end stop for a slide fastener constituted of an upper and lower plate and a base portion, comprising the upper plate formed of a flat undeformable plate and having a flange formed on each of both side ends thereof by bending each side end at right angle, a groove portion having a circular section provided in the center of the rear face of the lower plate, an arm portion provided on each of both sides of the groove portion such that the arm portion departs gradually from the upper plate, centers of the upper and lower plates connected through a base portion, a core portion of a fastener tape sandwiched between the upper and lower plates on right and left sides of the base portion, and the arm portion deformed toward the upper plate plastically to attach the bottom end stop, thereby enabling a decoration such as letters, marks or patterns to be expressed simply on the surface of the bottom end stop, and preventing generation of cracks in the lower plate when the bottom end stop is attached.

1 . A bottom end stop for a slide fastener constituted of an upper plate, a lower plate and a base portion, wherein the upper plate is formed of a flat plate while a flange is provided on each of both side ends thereof by bending each side end,
 the lower plate comprises a circular groove portion formed in a center of a rear face thereof,   centers of the upper plate and the lower plate are connected through a base portion, and   a core portion of each of right and left fastener tapes is sandwiched between the upper plate and the lower plate on the right and left sides of the base portion.   
   
   
       2 . The bottom end stop for the slide fastener according to  claim 1 , wherein the lower plate is deformed plastically toward the upper plate while the upper plate is not deformed. 
   
   
       3 . The bottom end stop for the slide fastener according to  claim 1 , wherein a swelling portion is provided on a surface of an upper plate on an upper side of the base portion such that it swells from the surface of the upper plate. 
   
   
       4 . The bottom end stop for the slide fastener according to  claim 1 , wherein a projecting portion projecting outwardly is provided on each of both right and left sides of the base portion, and the circular groove portion is provided by engraving toward between the right and left projecting portions. 
   
   
       5 . The bottom end stop for the slide fastener according to  claim 1 , wherein the lower plate and the upper plate are located so as to face each other in a vertical direction, and arm portions are formed so as to extend from a central side of the lower plate toward each of the right and left sides of the lower plate so that the arm portions depart gradually from the upper plate. 
   
   
       6 . The bottom end stop for the slide fastener according to  claim 1 , wherein the upper plate is formed thicker than the lower plate.