Set of circuit breakers with interlock means
AssigneeZhejiang Chint Electrics Co., Ltd.
InventorAijun Zhang
Life of this patent
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Abstract
A set of circuit breakers with interlock means, particularly a set of circuit breakers capable of realizing any mechanical interlock and unlock between two or more circuit breakers, wherein in the set of circuit breakers, each circuit breaker has an interlock means, said interlock means comprising a base plate 5, a driving lever (22; 23; 24), a control lever 8, two control arms 27, 28, three tension springs 10, 11, 12, and six cables 13, 14, 15, 16, 17, 18, two cables connected to two ends of the driving lever of each circuit breaker are respectively connected to a control arm of the other two circuit breakers.
Claims13
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.
Dependencies are inferred from the claim text.