Solenoid type electromagnetic trip

An electromagnetic release and solenoid technology, which is applied to the operation/release mechanism of the protection switch and the adjustment of the conditions of the protection switch, can solve the problems of poor linearity, inconsistent initial state of the circuit breaker, and low one-time pass rate, etc. Guaranteed Consistency, Reduced Specifications
CN101447374BActive Publication Date: 2011-04-27CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)
Publication Date
2011-04-27

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Abstract

The invention relates to a solenoid type electromagnetic trip, which belongs to the technical field of the low-voltage apparatus. The solenoid type electromagnetic trip comprises a knob, an adjusting rod, a spring, a moving iron core, a static iron core, a coil, a concentrating flux plate and a magnetic yoke and is characterized in that a push rod pivotally arranged at the upper end part of the magnetic yoke is also included, wherein, one end of the spring is connected with the adjusting rod, the other end of the spring is connected with the push rod, and the upper end of the moving iron coreis movably connected with the push rod after penetrating the concentrating flux plate. The invention has the advantages that the linear regulation of the current setting value for the short circuit action is realized by adjusting the length of the spring through the knob; since the adjusting screw component is arranged on the magnetic yoke, the magnetic gap can be adjusted finely, the inconsistency of the current setting values of all the trips due to the parts and the assembly is eliminated, and the consistency of the initial states of all the trips is ensured; and at least one hanging hook is arranged on the upper edge of the push rod, so that the specification of the spring is reduced when the multi-gear adjustment is realized.
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Description

technical field

[0001] The invention relates to a solenoid type electromagnetic tripper for a molded case circuit breaker, which is an improvement on the structure of the existing solenoid type electromagnetic tripper and belongs to the technical field of low-voltage electrical appliances. Background technique

[0002] At present, the existing solenoid type electromagnetic tripper has a structure consisting of figure 1 As disclosed, it mainly includes a moving iron core 4, a static iron core 41, a spring 3, a coil 44, and a yoke 5. The spring 3 is installed between the moving iron core 4 and the static iron core 41, and is arranged for Make inside the plastic cover 43 that insulates between the moving and static iron cores 4, 41 and the coil 44, the deficiency that this structure exists is: the setting value of the short-circuit operating current is not adjustable.

[0003] Also, U.S. Patent No. 5,467,069 discloses "an adjustable circuit breaker device". What this patented ...

Claims

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