Patent ID: 8237070

Claim:
A set of circuit breakers with interlock means, comprising at least three circuit breakers ( 1 , 2 , 3 ) and at least six cables ( 13 , 14 , 15 , 16 , 17 , 18 ), each circuit breaker in said set of circuit breakers having interlock means ( 4 ), the interlock means of each circuit breaker being interconnected to translate drive force via cables, characterized in that: each interlock means ( 4 ) comprises a drive member ( 20 ), a control member ( 40 ), a locking member, a base plate ( 5 ) and a cable mechanism ( 50 ); the base plate ( 5 ) of said interlock means ( 4 ) is provided with at least one control lever ( 7 ; 8 ; 9 ), at least one driving lever ( 22 ; 23 ; 24 ), at least two control arms ( 25 , 26 ; 27 , 28 ; 29 , 30 ) which are separate elements from said control lever ( 7 ; 8 ; 9 ), and three elastic elements ( 10 , 11 , 12 ) connected to said control lever ( 7 ; 8 ; 9 ) and said two control arms ( 25 , 26 ; 27 , 28 ; 29 , 30 ) respectively at their first ends and fixed to the base plate ( 5 ) at their second ends; said control lever ( 7 ; 8 ; 9 ) being connected to a trigger of a circuit breaker locking means; said driving lever ( 22 ; 23 ; 24 ) is being operatively connected to a driving mechanism on the circuit breaker; wire ropes of two cables connected to two ends of the driving lever ( 22 ; 23 ; 24 ) of any of said circuit breakers are respectively connected to one control arm of the other two circuit breakers; said control arm ( 25 , 26 ; 27 , 28 ; 29 , 30 ), under joint action of tensile force of said wire ropes and elastic force of said elastic elements ( 10 , 11 , 12 ) connected thereto, performs restriction or release of movement of said control lever ( 7 ; 8 ; 9 ); said control lever ( 7 ; 8 ; 9 ), after movement restriction from the control arm is released, under the action of elastic force of said elastic element connected thereto, automatically rotates and comes into contact with a shaft ( 71 ) of the locking means to perform locking of the shaft ( 71 ) of the locking means of the circuit breaker.