Fast-locking anti-loosening locking device

Abstract

The present invention discloses a fast-locking anti-loosening locking device, comprising a body, a pull rod with threads, a pressing block and an eccentric handle, wherein the pressing block is disposed on one side of the body, the pull rod respectively penetrates through the pressing blocking and the body, and one end of the pull rod is movably connected to the eccentric handle and the other end of the pull rod penetrates through the body to thread-fit a cap nut; and a spacing between the pressing block and the body is adjusted by rotating the cap nut to adapt to guide rails of different sizes. The present application has the following advantages: even through in the case of firearm firing, the fast-locking anti-loosening locking device can still maintain a locked state instead of loosening, thereby ensuring the reliability and practicality of the mechanism.

What is claimed is: 
     
         1 . A fast-locking anti-loosening locking device, comprising a body, a pull rod with threads, a pressing block and an eccentric handle, wherein the pressing block is disposed on one side of the body, the pull rod respectively penetrates through the pressing blocking and the body, and one end of the pull rod is movably connected to the eccentric handle and the other end of the pull rod penetrates through the body to thread-fit a cap nut. 
     
     
         2 . The fast-locking anti-loosening locking device according to  claim 1 , wherein the cap nut is clamped into a slot on the body by two opposite sides of a hexagon, and two lateral sides of the slot clamp the cap nut. 
     
     
         3 . The fast-locking anti-loosening locking device according to  claim 1 , wherein the pull rod is a pull rod with threads. 
     
     
         4 . The fast-locking anti-loosening locking device according to  claim 3 , wherein a protrusion is provided at an end of the eccentric handle connected to the pull rod, and when in rotation, the protrusion urges the pressing block to start locking with the body and the cap nut is clamped into the slot on a side face of the body by the two opposite sides of the hexagon. 
     
     
         5 . The fast-locking anti-loosening locking device according to  claim 1 , wherein the eccentric handle is provided with a mounting hole into which a wrench is movably connected, a spring is mounted between the wrench and the bottom of the mounting hole, a notch is formed at an end portion of the pull rod connected to the eccentric handle, and a tongue extending and fitting the notch is provided at one end of the wrench. 
     
     
         6 . The fast-locking anti-loosening locking device according to  claim 5 , wherein the wrench is fixed into the mounting hole by passing a pin through the wrench. 
     
     
         7 . The fast-locking anti-loosening locking device according to  claim 5 , wherein the spring is pressed into the mounting hole of the eccentric handle by a spring seat, and the head portion of the spring seat is mounted inside a groove of the wrench. 
     
     
         8 . The fast-locking anti-loosening locking device according to  claim 5 , when the eccentric handle is rotated to a position vertical to the pull rod, when the eccentric handle is rotated to be vertical to the pull rod, the tongue will be automatically clamped at the notch of the pull rod under the elasticity. 
     
     
         9 . The fast-locking anti-loosening locking device according to  claim 5 , wherein the tongue of the wrench is tilted to separate from the notch of the pull rod when the wrench is pressed to the largest extent.