Slide rail locking device

Abstract

A slide rail locking device includes a first and a second slide rail assemblies and a first and a second activators. Each of the first and second slide rail assemblies includes a stationary slide rail and a telescopic slide rail assembly. The first activator is disposed at one end of the telescopic slide rail assembly. The second activator is disposed on the stationary slide rail corresponding to the first activator. The second activator includes a base seat, a swinging member and a bar member. The base seat is arranged at one end of the stationary slide rail. The swinging member is disposed on the base seat corresponding to the first activator. Two ends of the bar member are respectively positioned between the base seats and the swinging members of the first and second slide rail assemblies. When the telescopic slide rail assembly of one of the slide rail assemblies is extended out of the stationary slide rail, the swinging member of this slide rail assembly chucks the bar member and prevents the bar member from sliding. At this time, the telescopic slide rail assembly of the other slide rail assembly will be unable to extend out of the stationary slide rail.

1 . A slide rail locking device disposed in a cabinet having at least two drawers arranged from upper side to lower side, whereby when one of the drawers is drawn out, the other drawer is prevented from being drawn out, said slide rail locking device comprising:
 a first slide rail assembly and a second slide rail assembly mounted respectively for the drawers, the first slide rail assembly being positioned above the second slide rail assembly corresponding thereto, each of the first and second slide rail assemblies including a stationary slide rail and a telescopic slide rail assembly, the stationary slide rail being fixed on the cabinet, the telescopic slide rail assembly being mounted on a corresponding drawer and back and forth slidably positioned in the stationary slide rail, the telescopic slide rail assembly being extendable out from front end of the stationary slide rail;   a first activator disposed at one end of the telescopic slide rail assembly; and   a second activator disposed on the stationary slide rail corresponding to the first activator, the second activator including a base seat, a swinging member and a bar member, the base seat being arranged at one end of the stationary slide rail, the swinging member being disposed on the base seat corresponding to the first activator, the swinging member being reciprocally movable between a first position and a second position across the sliding direction of the telescopic slide rail assembly, the swinging member having at least one swinging guide slope for guiding the first activator into the base seat, whereby the first activator pushes the swinging member to move from the first position to the second position, the bar member being reciprocally movably disposed between the first and second slide rail assemblies, two ends of the bar member being respectively fitted through the base seats of the first and second slide rail assemblies and positioned between the base seats and the swinging members, whereby when the swinging members of the first and second slide rail assemblies are positioned in the second position, none of the swinging members can restrict the bar member from sliding, when the telescopic slide rail assembly of one of the slide rail assemblies is extended, the swinging member of this slide rail assembly moving from the second position to the first position, whereby the swinging member abuts against and chucks the bar member to prevent the bar member from sliding and the telescopic slide rail assembly of the other slide rail assembly will be unable to extend forward, the first activator of the other slide rail assembly serving to push the bar member when released from the swinging member.   
   
   
       2 . The slide rail locking device as claimed in  claim 1 , wherein the telescopic slide rail assembly includes a drawer slide rail. 
   
   
       3 . The slide rail locking device as claimed in  claim 2 , wherein the telescopic slide rail assembly further includes a middle slide rail, the drawer slide rail being mounted on a corresponding drawer and slidably positioned in the middle slide rail. 
   
   
       4 . The slide rail locking device as claimed in  claim 1 , wherein the first activator is a tongue projecting toward the stationary slide rail. 
   
   
       5 . The slide rail locking device as claimed in  claim 2 , wherein the first activator is a tongue projecting toward the stationary slide rail. 
   
   
       6 . The slide rail locking device as claimed in  claim 3 , wherein the first activator is a tongue projecting toward the stationary slide rail. 
   
   
       7 . The slide rail locking device as claimed in  claim 1 , wherein one end of the swinging member is fixed on the base seat, while the other end of the swinging member extends toward the telescopic slide rail assembly and is bent to the stationary slide rail to form the swinging guide slope. 
   
   
       8 . The slide rail locking device as claimed in  claim 2 , wherein one end of the swinging member is fixed on the base seat, while the other end of the swinging member extends toward the telescopic slide rail assembly and is bent to the stationary slide rail to form the swinging guide slope. 
   
   
       9 . The slide rail locking device as claimed in  claim 3 , wherein one end of the swinging member is fixed on the base seat, while the other end of the swinging member extends toward the telescopic slide rail assembly and is bent to the stationary slide rail to form the swinging guide slope. 
   
   
       10 . The slide rail locking device as claimed in  claim 1 , wherein each end of the bar member is formed with a bar member guide slope for the first activator to push the bar member. 
   
   
       11 . The slide rail locking device as claimed in  claim 2 , wherein each end of the bar member is formed with a bar member guide slope for the first activator to push the bar member. 
   
   
       12 . The slide rail locking device as claimed in  claim 3 , wherein each end of the bar member is formed with a bar member guide slope for the first activator to push the bar member. 
   
   
       13 . The slide rail locking device as claimed in  claim 10 , wherein the bar member is further formed with another bar member guide slope opposite to the bar member guide slope. 
   
   
       14 . The slide rail locking device as claimed in  claim 11 , wherein the bar member is further formed with another bar member guide slope opposite to the bar member guide slope. 
   
   
       15 . The slide rail locking device as claimed in  claim 12 , wherein the bar member is further formed with another bar member guide slope opposite to the bar member guide slope.