Lever type tool box drawer locking mechanism

Abstract

This utility model relates to a lever type tool box drawer locking mechanism, consisting of control mechanism comprising shaped strip stressed plate, strip square shaped stressed plate guide rails with strip-shaped notch on main surface, guard sleeve covering and fitted on stressed plate guide rails, baffle with position-limiting extending hole and box cover plate, and actuator comprising lever with middle shaft mounting hole and waist shaped shaft mounting holes at both ends, lever seat with shaft mounting hole on middle raised face, locking plate with position-limiting locking hole and shaft mounting hole, locking plate guide rails with strip-shaped notch on main plane, and latch hook with protruding hook. The control mechanism and locking actuator are installed inner surface of tool box rear board and outer surface of drawer rear board respectively (near each other). Hauled by the lever, opening and closing of cover plate controls up-down movement of stressed plate, driving locking plate at the other end of lever and changing relative position between position-limiting locking hole and latch hook, thus locking and unlocking the drawer. The present invention features simple structure, easy use and reliable operation.

1 . A lever type tool box drawer locking mechanism consisting of control mechanism ( 1 ) and actuator ( 2 ), characterized by said control mechanism ( 1 ) comprising stressed plate ( 3 ), stressed plate guide rails ( 4 ), guide sleeve ( 5 ), baffle ( 6 ) and box cover plate ( 7 ), and said actuator ( 2 ) comprising lever ( 8 ), lever seat ( 9 ), locking plate ( 10 ), locking plate guide rails ( 11 ) and latch hook ( 12 ); among them:
 a. main body of said stressed plate ( 3 ) is strip-shaped   and includes shaft mounting hole ( 13 );   b. main body of said stressed plate guide rails ( 4 ) is strip square shaped, matching internal assembling of   shaped strip-like stressed plate ( 3 ), and with working notch ( 14 ) on middle main plane;   c. main body of said guard sleeve ( 5 ) is   shaped, on which shaft mounting hole ( 15 ) is provided;   d. position-limiting extending hole ( 17 ) is provided on said baffle ( 6 );   e. main body of said lever seat ( 9 ) is bent, on raised face of which shaft mounting hole ( 18 ) is provided;   f. main body of said lever ( 8 ) is flat, on which middle shaft mounting hole ( 19 ) and waist shaped shaft mounting holes ( 20 ) and ( 21 ) at both ends are provided for movable position-limiting fitting on lever seat ( 9 );   g. main body of said locking plate ( 10 ) is in the shape of   and strip like, and on its main plane, position-limiting locking holes ( 22 ) at certain interval with quantity and positions conforming to quantity of controlled drawers and positions of latch hooks on drawers are provided; in addition, shaft mounting hole ( 23 ) is provided near upper end;   h. main body of said locking plate guide rails ( 11 ) is strip square shaped, matching internal assembling of   shaped strip-like locking plate ( 10 ), and with working notch ( 24 ) on middle main plane;   i. on said latch hook ( 12 ), protruding hook ( 26 ) is provided.   
   
   
       2 . The lever type tool box drawer locking mechanism of  claim 1  wherein said stressed plate guide rails ( 4 ), baffle ( 6 ), lever seat ( 9 ), and locking plate guide rails ( 11 ) are installed on inner surface of rear board of tool box body. 
   
   
       3 . The lever type tool box drawer locking mechanism of  claim 1  wherein said lever ( 8 ) is shaft mounted on lever seat ( 9 ) in a movable manner via middle shaft mounting hole ( 19 ) and shaft mounting hole ( 18 ). 
   
   
       4 . The lever type tool box drawer locking mechanism of  claim 1  wherein said stressed plate ( 3 ) extends through groove in stressed plate guide rails ( 4 ) in a movable manner. 
   
   
       5 . The lever type tool box drawer locking mechanism of  claim 1  wherein said guard sleeve ( 5 ) covers external surface of stressed plate guide rails ( 4 ). 
   
   
       6 . The lever type tool box drawer locking mechanism of  claim 1  wherein said guard sleeve ( 5 ), one end of lever ( 8 ) and stressed plate ( 3 ) are connected together in a movable manner by means of clevis pin with head ( 27 ) and via shaft mounting hole ( 13 ), waist shaped shafting mounting hole ( 20 ) and shaft mounting hole ( 13 ). 
   
   
       7 . The lever type tool box drawer locking mechanism of  claim 1  wherein upper end ( 16 ) of said stressed plate ( 3 ) extends through position-limiting extending hole ( 17 ) on baffle ( 6 ) in a movable manner. 
   
   
       8 . The lever type tool box drawer locking mechanism of  claim 1  wherein said locking plate ( 10 ) extends through groove of locking plate guide rails ( 11 ) in a movable manner. 
   
   
       9 . The lever type tool box drawer locking mechanism of  claim 1  wherein said locking plate ( 10 ) is connected in a movable manner by means of clevis pin with head ( 28 ) and via shaft mounting hole ( 24 ) near the upper end and waist shaped shafting mounting hole ( 21 ) on the other end of lever ( 8 ).