Tool-less quick locking screw nut

Abstract

A tool-less quick locking screw nut is secured onto a connecting object having a male thread and includes a pull-ring tab and an axle portion secured to an axle portion of the connecting object. The axle portion has a passage with a female thread, such that the pull-ring tab rotates the screw nut into or out of the connecting object without using a tool. The screw nut further includes two spacers, and the clamping force of the two spacers press the pull-ring tab onto a clamping plate, so that if the pull-ring tab is lifted, a user can hold and turn the pull-ring tab to secure/remove the screw nut to/from the connecting object. The pull-ring tab can be turned parallel to the clamping plate and securely attached to the clamping plate to prevent the connecting object from being shaken by a high-speed rotation of the object.

1 . A tool-less quick locking screw nut, provided for locking a connecting object having a male thread, and said quick locking screw nut comprising: 
 a base, having a circular through hole, a circular plate disposed between the rim of said base and said through hole, and a spacer attached on a surface of said base having said circular plate, and the external radius of said spacer being smaller than the external radius of said circular plate;    a clamping plate, coupled to another surface of said base corresponding to said spacer, and said clamping plate having a group of corresponding grooves;    a screw head, having an axle portion extended from said screw head and secured to said connecting object, and said axle portion having a passage with a female thread, and said axle portion using another spacer to press a pull-ring tab installed in said groove, and said screw head using said axle portion to be passed through said spacer, said clamping plate, said circular plate, and said base in sequence and riveted to said clamping plate and said base as a whole, such that said pull-ring tab is securely and vertically disposed on said clamping plate or attached onto said clamping plate.    
   
   
       2 . The tool-less quick locking screw nut of  claim 1 , wherein said pull-ring tab includes a group of corresponding axial protrusions.  
   
   
       3 . The tool-less quick locking screw nut of  claim 1 , wherein said spacer is a leaf spring.  
   
   
       4 . The tool-less quick locking screw nut of  claim 1 , wherein said circular plate includes a plurality of grooves.