Bistable permanent magnet moulded case circuit breaker

Abstract

The invention discloses a bistable permanent magnet moulded case circuit breaker. The bistable permanent magnet moulded case circuit breaker comprises an operating mechanism, a quick acting mechanism, a connecting rod mechanism and a main loop; the operating mechanism is connected with the main loop through the connecting rod mechanism; the operating mechanism comprises a movable iron core, a movable iron core connecting rod, a static iron core, an opening coil, a closing coil and a permanent magnet; the movable iron core is fixed on the movable iron core connecting rod and positioned at the inner side of the static iron core; the opening coil and the closing coil are positioned between the static iron core and the movable iron core and arranged at two sides of a middle pole shoe of the static iron core; simultaneously, the permanent magnet is positioned at the end part of the middle pole shoe of the static iron core and positioned outside the movable iron core; the quick acting mechanism comprises a quick acting winding, a copper disc, an iron disc and an iron disc connecting rod; the quick acting winding is fixed in the front of the outside of the static iron core; the copper disc is fixed on the iron disc; the iron disc is fixed on the iron disc connecting rod; the iron disc connecting rod is fixedly connected with one end of the movable iron core connecting rod; and the copper disc is positioned between the iron disc and the quick acting winding. The bistable permanent magnet moulded case circuit breaker disclosed by the invention has the advantage that opening, closing and quick acting functions are completely controlled electrically.

Description

technical field [0001] The invention relates to a bistable permanent magnet molded case circuit breaker, which can be used for connecting, breaking and protecting the main circuit of high and low voltage electrical equipment. Background technique [0002] At present, the molded case circuit breaker basically adopts the form of a manual operating mechanism plus a release device. The operating mechanism uses spring energy storage to realize the connection, breaking and protection of the main circuit of electrical equipment; the patent number is 201510094877.6 patent "a plastic case "Circuit breaker" realizes the electric control based on the original manual molded case circuit breaker through the energy storage method of the rotating motor. However, the above-mentioned patents and other existing patents that can realize molded case circuit breakers all adopt the form of additional mechanism on the basis of retaining the original operating mechanism. Although this form retains ...

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Problems solved by technology

[0002]At present, the molded case circuit breaker basically adopts the form of a manual operation mechanism plus a release device, and the operating mechanism uses spring energy storage to realize the main circuit of electrical equipment to be connected, Breaking and protection; the patent No. 201510094877.6 "a molded case circuit breaker" realizes electric control based on the original manual molded case circuit breaker through the energy storage method of the rotating motor, and the patent No. 201410829577.3 "circuit breaker electric operation "Mechanism" realizes electric control on the basis of the original manual molded case circuit breaker by means of a linear motor; however, the above-mentioned patents and other existing patents that can realize molded case circuit breakers all use additional mechanisms on the basis of retaining the original operating mechanism Although this form retains the original manual operation function, this method makes the original molded case circuit breaker mechanism more complicated and reduces the reliability of the molded case circuit breaker. Further purchase of auxiliary electronic control mechanism increases the burden on users

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