Type of position-limiting mechanism preventing slipping out of drawer

Abstract

This utility model relates to a type of position limiting mechanism preventing slipping out of drawers, consisting of arresting pin, keyway, self-plugging rivet, compression spring and control handle arranged in strip shaped drawer handle plate groove, and position-limiting pinch plate on box side board corresponding to keyway position. The arresting pin is strip shaped and consists of round pin rod and pin flap with shoulder. On the round pin rod, compression spring is fitted and on its tail end, control handle is fixed. The keyway is strip shaped with a round hole in the middle; at one outer side of its front end, an installation buckle with position-limiting buckle groove is provided, and on side face near the tail of the same side, fixed installation seat with internal assembling hole is provided. For operation, when the drawer is pushed inward, the pin flap will be automatically clamped. To open the drawer, just pull handle in the reverse direction to drive arresting pin to retreat from position-limiting buckle hole, realizing unlocking. Owning to simple structure and easy processing of self-made parts, manufacture cost is extremely low. In addition, installation and use are easy, operation is reliable and safe, providing strong practicality.

1 . A type of position-limiting mechanism preventing slipping out of drawer, consisting of arresting pin ( 1 ), keyway ( 2 ), self-plugging rivet ( 3 ), compression spring ( 4 ), control handle ( 5 ), and position-limiting pinch plate ( 6 ), and characterized by that said arresting pin ( 1 ), keyway ( 2 ), self-plugging rivet ( 3 ), compression spring ( 4 ), and control handle ( 5 ) are provided in strip shaped drawer handle plate ( 20 )   groove ( 21 ), and position-limiting pinch plate ( 6 ) fixed on side board of box ( 23 ) at a position corresponding to edge of keyway ( 2 ) front round hole ( 9 ). Among them:
 a. main body of arresting pin ( 1 ) is strip shaped and consists of round pin rod ( 7 ) and shouldered pin flap ( 8 ) with wedge shaped front part, with control handle ( 5 ) fitted on round pin rod ( 7 ) tail end ( 24 );   b. main body of keyway ( 2 ) is strip shaped with round hole ( 9 ) in the middle; on one outer side ( 11 ) of front end ( 10 ), protruding installation buckle ( 13 ) with position-limiting buckle groove ( 12 ) is provided. On the same side ( 11 ) near tail end ( 14 ), fixed mounting seat ( 16 ) with internal assembling hole ( 15 ) is provided. On edge of tail end round hole ( 9 ), internal clip shoulder ( 18 ) with mounting hole ( 17 ) matching diameter of round pin rod ( 7 ) is provided;   c. on position-limiting pinch plate ( 6 ), position-limiting buckle hole ( 19 ) is provided.   
   
   
       2 . The position-limiting mechanism preventing slipping out of drawer of  claim 1  wherein position-limiting buckle groove on said keyway ( 2 ) front protruding installation buckle ( 13 ) is buckled on side of drawer front panel ( 22 ). 
   
   
       3 . The position-limiting mechanism preventing slipping out of drawer of  claim 1  wherein said fixed mounting seat ( 16 ) is assembled on drawer front panel ( 22 ) via self-plugging rivet ( 3 ). 
   
   
       4 . The position-limiting mechanism preventing slipping out of drawer of  claim 1  wherein said arresting pin ( 1 ) extends through keyway ( 2 ) round hole ( 9 ) as a whole part. 
   
   
       5 . The position-limiting mechanism preventing slipping out of drawer of  claim 1  wherein position of said compression spring ( 4 ) is limited by shouldered pin flap ( 8 ) and the internal clip shoulder ( 18 ) on edge of keyway ( 2 ) tail end round hole ( 9 ), and this spring is fitted on round pin rod ( 7 ) of arresting pin ( 1 ).