Zipper with improved fastening stability

Abstract

A zipper with improved fastening stability is disclosed. The improved zipper opens and closes according to the engagement and separation of a plurality of coupling elements formed on facing surfaces of a pair of zipper tapes and includes a zipper slider for engaging and separating the coupling elements, guiding rails attached on upper surfaces of the zipper tapes, and an auxiliary slider that guides the guiding rails as they slide through it to thereby gather the zipper tapes before the coupling elements are engaged. The structure is compact, and the zipper can be engaged with minimal force, even when the garment is tightly stretched or the zippered enclosure (suitcase, e.g.) is tightly packed with material.

1 . A zipper that is opened and closed according to engagement and separation of a plurality of coupling teeth elements formed on facing surfaces of a pair of zipper tapes and including a zipper slider for engaging and separating the coupling elements, the zipper comprising:
 guiding rails attached on upper surfaces of the zipper tapes at respective outer sides of the coupling elements in a longitudinal direction; and   an auxiliary slider linearly connected to the front side of the zipper slider and guiding the guiding rails as they slide through the inside thereof to thereby gather the zipper tapes before the coupling elements are engaged, so that fastening stability can be improved.   
   
   
       2 . The zipper with improved fastening stability according to  claim 1 , wherein the auxiliary slider comprises an upper body having a separating partition formed in the middle of a lower surface to form a plurality of guiding paths for engagement with the guiding rails at a lower part of the auxiliary slider, a lower support plate connected to a lower part of the upper body to form the guiding paths, and a fixing pin for connecting the upper body to the lower support plate. 
   
   
       3 . The zipper with improved fastening stability according to  claim 1 , wherein the guiding rail comprises depressions formed at regular intervals, and connection holes formed at a front bottom and a rear bottom of the depressions for engagement with a sewing thread so that the guiding rails can be sewn onto the zipper tapes. 
   
   
       4 . The zipper with improved fastening stability according to  claim 2 , wherein the auxiliary slider further comprises a protruding portion formed at one end of the auxiliary slider and having a connection hole in the center for engagement with a connection link formed on the zipper slider. 
   
   
       5 . The zipper with improved fastening stability according to  claim 2 , wherein the auxiliary slider includes anti-separation walls extending vertically downward by a predetermined length on both sides of the upper body to prevent deviation of the auxiliary slider from the guiding rail passing through the guiding path. 
   
   
       6 . The zipper with improved fastening stability according to  claim 2 , wherein the auxiliary slider is suitably curved so that as the guiding path of the auxiliary slider moves toward an expanded portion formed on one side of the auxiliary slider, the guiding rails are widened, and as the guiding path moves toward a narrowed portion formed on the other side of the auxiliary slider, the guiding rails are gathered.