Overcurrent circuit breaker

A circuit breaker and overcurrent technology, applied in circuit breaker parts, circuit breaker contacts, etc., can solve problems such as inability to apply, inability to effectively extinguish arcs with DC high voltage, inability to apply control and power supply restrictions, and achieve huge economic benefits. Benefit and social benefit, small size effect

Inactive Publication Date: 2007-11-14
常州东方铁路器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods cannot be applied due to volume limitations, or due to control and power supply limitations, and more importantly, they cannot effectively extinguish the arc in the face of strong arcing of DC high voltage.

Method used

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  • Overcurrent circuit breaker
  • Overcurrent circuit breaker

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Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0011] As shown in Figure 1, an overcurrent circuit breaker includes a circuit board, an electromagnet, a moving contact 6 and a static contact 8. The electromagnet is composed of a coil 1, a static iron core 2, and a moving iron core 3. The coil 1 is placed In the middle of the static iron core 2, the two ends of the wire of the coil 1 are welded on the circuit board, the moving iron core 3 is inserted into the hole of the coil 1 through the round hole of the static iron core 2, and the head of the moving iron core 3 protrudes from the static iron core 2. iron core 2, and a moving contact seat 5 is fixed on the head of the moving iron core 3, the moving contact 6 is screwed tightly on the moving contact seat 5, and the moving contact seat 5 and the static iron core 2 are provided with Compression spring 4, one end of the compression spring 4 ...

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PUM

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Abstract

The invention relates to an over current release, comprising wiring board, electromagnet, moveable contact, static contact, wherein, the electromagnet is formed by coil, static iron corn and movable iron corn, while the head of movable iron corn project form the static iron, and the movable contact is fixedly mounted on the movable contact base which is arranged on the head of movable iron corn; back-moving spring whose one end is on the movable contact base and another end on the static iron corn, is arranged between them; one shut-off bottom with groove is arranged on the contact of movable and static contact, while it is mounted on the wiring board and has one arc extinguish chamber in its groove; one back-moving spring is connected to the arc extinguish chamber while its anther end connects the wiring board; one shifting unit is arranged beside arc extinguish chamber to control the up and down movement of it. Said invention has small volume, and can extinguish the strong arc of high-voltage direct current. It can be mainly applied for over current protection in the high-voltage direct current circuit (DC20V~220V) of railway signal, to shut off the circuit when it is over current or in short.

Description

technical field [0001] The invention relates to an overcurrent circuit breaker, which is mainly used for the overcurrent protection of the railway signal direct current high voltage (DC30V~220V range) circuit, and is used to disconnect the circuit when the circuit is overcurrent or short circuited; when the overcurrent or short circuit disappears, the Turn on the loop. And all occasions that require a DC circuit greater than 30V and a small-profile relay are used to disconnect or connect the circuit. Background technique [0002] When developing an overcurrent protector for DC 220V railway signals, we found that none of the manufacturers on the market or all manufacturers can provide small relays for DC 220V circuits. The small relays that can be provided can only be used for DC 30V or less. Due to the limitation of the space size of the application, only such small relays below DC 30V can be used. [0003] Commercially available DC 30V small relays have no targeted design...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H73/04H01H73/18
Inventor 袁保蓉王自强
Owner 常州东方铁路器材有限公司
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