Fastener and double end zipper with the fastener

Abstract

The present invention relates to a fastener, the convex member of the male fastener comprises a convex member body and a convex portion, and the convex member is adapted for contracting along the radial direction, as the convex portion is squeezed radially; the female fastener comprises a female fastener body and a receiving cavity formed on the female fastener body, the receiving cavity comprises a first slot and a second slot, a locking slot is formed on an inner wall of the first slot, for preventing the convex portion from separating from the female fastener axially, and a constraint guide slot is provided between the locking slot and the second slot, the convex portion is adapted for move along the constraint guide slot and between the second slot and the locking slot in a reciprocating manner, as the convex member rotates relative to the receiving cavity in a reciprocating manner, and the constraint guide slot has a shape that allows the convex member to be squeezed radially by the constraint guide slot, during the rotation process of the convex member from the second slot to the locking slot. The fastener in the present invention has a simple structure, it is reliable and easy to operate, when the fastener is used on the zipper on a luggage or a bag, it can prevent the luggage or the bag from being opened by a thief without drawing the attention of the carrier.

1 . A fastener, comprising
 a male fastener; and   a female fastener,   wherein,   said male fastener comprises a convex member,   said convex member comprises a convex member body, and a convex portion, provided on a lateral wall of said convex member body; said convex member is adapted for contracting along the radial direction, as said convex portion is squeezed radially;   said female fastener comprises   a female fastener body,   an receiving cavity formed on said female fastener body, adapted for insertion of said convex member;   said receiving cavity comprises a first slot, adapted for axial insertion of said convex member body, and a second slot, adapted for axial insertion of said convex portion,   a locking slot is formed on an inner wall of said first slot, for preventing said convex portion from separating from said female fastener axially, and   a constraint guide slot is provided between said locking slot and said second slot,   said convex portion is adapted for move along said constraint guide slot and between said second slot and said locking slot in a reciprocating manner, as said convex member rotates relative to said receiving cavity in a reciprocating manner, and   said constraint guide slot has a shape that allows said convex member to be squeezed radially by said constraint guide slot, during the rotation process of said convex member from said second slot to said locking slot.   
     
     
         2 . The fastener of  claim 1 , wherein,
 said convex member body is an elastic circular column,   a third slot for dividing said circular column into at least two individual parts is provided on an end face of said circular column, and a bottom of said third slot extends towards a root portion of the convex member body on which said circular column is provided, an outer side wall of each said individual part is correspondingly provided with said convex portion;   the inner wall of said first slot is formed with a plurality of said locking slots at corresponding positions, with the number of said locking slots in consistence with that of said convex portion, and the rotation angle of each convex portion from said corresponding second slot to said corresponding locking slot is the same.   
     
     
         3 . The fastener of  claim 2 , wherein,
 each said individual part has one said convex portion provided on a lateral wall thereof, two said second slots are provided on corresponding positions of said receiving cavity and two said locking slot are provided on the corresponding position of the inner side wall of said first slot.   
     
     
         4 . The fastener of  claim 2 , wherein,
 two said convex portions are provided on the lateral walls of two said individual parts, and two said convex portions on the same individual part are aligned along the axial direction, two said second slots are provided on corresponding positions of said receiving cavity and two said convex portions on the same individual part are adapted for a coaxial insertion into the same said second slot, and said first slot has four said locking slots provided on corresponding positions of an inner side wall thereof.   
     
     
         5 . The fastener of  claim 2 , wherein,
 the rotation angle of each convex portion from said corresponding second slot to said corresponding locking slot is 90°.   
     
     
         6 . The fastener of  claim 1 , wherein,
 said convex portion is an arc projection, and the length of said arc projection extends along the circumferential direction of said convex member body,   
     
     
         7 . The fastener of  claim 1 , wherein,
 as the constraint guide slot squeezes the convex portion radially through the lateral wall thereof, a sliding track is adapted to be formed on the lateral wall of the constraint guide slot, and the constraint guide slot has a shape that allows the distance from the sliding track to the rotation center gradually reduces along the direction from the end where the second slot is located to the end where the locking slot is located.   
     
     
         8 . The fastener of  claim 1 , wherein,
 said male fastener further comprises   a male fastener body,   said convex member is provided on said male fastener body, and the shape of said male fastener body is the same as that of said female fastener body.   
     
     
         9 . The fastener of  claim 1 , wherein,
 said male fastener and said female fastener respectively have a flexible connection member connected thereto.   
     
     
         10 . The fastener of  claim 9 , wherein,
 said flexible connection member is a rope or a chain.   
     
     
         11 . A double end zipper, comprising,
 a chain teeth, and   two sliding zipper heads coordinating with said chain teeth,   and further comprising,   said fastener of  claim 9 ,   said flexible connection member of said male fastener and said flexible connection member of said female fastener are respectively connected with two said sliding zipper heads.   
     
     
         12 . A double end zipper, comprising,
 a chain teeth, and   two sliding zipper heads coordinating with said chain teeth,   and further comprising,   said fastener of  claim 10 ,   said flexible connection member of said male fastener and said flexible connection member of said female fastener are respectively connected with two said sliding zipper heads.