Snap fastener

Abstract

The present invention provides a snap fastener which, when an engaging head engages an engaging hole portion, allows a disengagement operation for releasing the engagement therebetween to be carried out accurately. In a pair of the snap elements capable of engaging with or disengaging from each other freely in an opposing direction, one base plate has an engaging head while the other base plate has an engaging hole portion. Respective base portions of the base plates are attached on attached bodies. The base plate of any one of the snap elements has a grip portion, provided at the side opposite to the attached body such that it protrudes outward of the other base portion. The other snap element has a receiving portion which makes contact with the base portion of the one snap element. If the grip portion is raised with the finger when those snap elements are engaged, the one snap element is tilted with the receiving portion of the other snap element acting as a fulcrum point so as to release the engagement, thereby facilitating the disengagement operation.

What is claimed is:  
     
         1 . A snap fastener comprising a pair of snap elements capable of engaging with or disengaging from each other in an opposing direction, wherein the one snap element thereof has an engaging head provided protrudedly on a base plate while the other snap element has an engaging hole portion provided in a base plate, with which the engaging head is capable of engaging, an attached body being attached onto a base portion of each base plate, any one of the snap elements having a grip portion while the other snap element having a receiving portion making contact with the base portion of said one snap element.  
     
     
         2 . A snap fastener according to  claim 1 , wherein the grip portion provided on any one of the snap elements is formed to protrude outward beyond an end portion or an edge of the base plate of the other snap element.  
     
     
         3 . A snap fastener according to  claim 1 , wherein one of the snap elements has the base portion protruded from an end of the flat base plate so as to have an L-shaped cross section while the other snap element has the tongue-like receiving portion provided at an end of the flat base plate.  
     
     
         4 . A snap fastener according to  claim 1 , wherein each of the pair of the snap elements has the grip portion protruded beyond the base portion of the mating base plate at an end of each base plate, while the receiving portion is provided inward of the grip portion.  
     
     
         5 . A snap fastener according to  claim 1 , wherein the pair of snap elements are molded integrally by injection molding means with thermoplastic resin, respectively.  
     
     
         6 . A snap fastener according to  claim 1 , wherein at least one of the snap elements is formed with injection molding means using thermoplastic resin such that the base portions of the base plates are molded and attached on the attached bodies.  
     
     
         7 . A snap fastener according to  claim 1 , wherein at least one of the snap elements has an attaching plate provided on the base portion of the base plate, the attaching plate having insertion holes through which the attached body is capable of being inserted.  
     
     
         8 . A snap fastener according to  claim 1 , wherein at least one of the snap elements has an attaching portion provided on the base portion of the base plate, the attaching portion having an attaching hole with which the attached body is sewed.  
     
     
         9 . A snap fastener according to  claim 1 , wherein a plurality of the snap elements are attached on a pair of the attached bodies at a predetermined interval such that they oppose each other.  
     
     
         10 . A snap fastener according to  claim 1 , wherein a curtain is attached on the base portion of the base plate of one of the snap elements while a curtain rail runner is attached on the base portion of the base plate of the other snap element.  
     
     
         11 . A snap fastener according to  claim 1 , wherein the attached bodies attached on the base portions of the base plates of the snap elements are disposed such that the center lines of the attached bodies are on the same line.