Rotation-type safety buckle

Abstract

A rotation-type safety buckle comprising of a male fastener and a female fastener is provided. The male fastener has a column at a center of an inner surface thereof, the male fastener has a respective engagement clamper,at each opposite side with respect to the column the engagement clamper is raised from the inner surface of the male fastener such that an opening is provided corresponding to the engagement clamper. The female fastener is provided with a central portion at a center thereof for connecting with the male fastener, the central portion has a wall and defines a guiding hole for receiving the column, and a respective side arm extending from the wall of the central portion is provided to enter the opening of the male fastener for complete engagement with the engagement clamper. The engagement is formed by the male fastener and the female fastener being stacked to each other and connected, making the male fastener rotate clockwise, making the side arm enters the opening of engagement clamper. A secondary protective .engagement function is provided by the protrusion residing within the void of the female fastener after the male fastener rotates clockwise.

1 . A rotation-type safety buckle comprising of a male fastener and a female fastener, 
 wherein the male fastener has a column at a center of an inner surface thereof, the male fastener has a respective engagement damper at each opposite side with respect to the column, the engagement clamper is raised from the inner surface of the male fastener such that an opening is provided corresponding to the engagement clamper; and    wherein the female fastener is provided with a central portion at a center thereof for connecting with the male fastener, the central portion has a wall and defines a guiding hole for receiving the column, and a respective side arm extending from the wall of the central portion is provided to enter a corresponding opening of the male fastener for engagement with the engagement clamper.    
   
   
       2 . The rotation-type safety buckle of  claim 1 , wherein the opening is a through-hole in a body of the male fastener.  
   
   
       3 . The rotation-type safety buckle of  claim 1 , wherein the inner surface defining four corners, each corner is provided with a protrusion for engaging with the female fastener.  
   
   
       4 . The rotation-type safety buckle of  claim 3 , wherein, along a circumference of the central portion of the female fastener, at least a void corresponding to the protrusion is provided for receiving the protrusion.  
   
   
       5 . The rotation-type safety buckle of  claim 4 , wherein diameter of the void is substantially larger than diameter of the protrusion for facilitating entry of the protrusion.