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An arc-extinguishing magnetic circuit resisting/matching electrodynamic repulsion and its DC relay

An electric repulsion and arc extinguishing technology, applied in electromagnetic relays, electromagnetic relay details, relays, etc., can solve the problem of low magnetic utilization rate of magnetic steel, and achieve the effect of improving magnetic utilization rate and avoiding abnormality.

Active Publication Date: 2017-04-05
XIAMEN HONGFA ELECTRIC POWER CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this four pieces of magnetic steel scheme, it is further proposed to increase the magnetic yoke 107 (as figure 2 shown), but the main magnetic flux 108 formed by the two magnetic steels 102 can only enhance the intensity of the arc-extinguishing magnetic field, and its leakage magnetic flux 109 also cancels each other in providing the ampere force to the moving spring. Therefore, the magnetic steel The magnetic utilization rate is relatively low

Method used

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  • An arc-extinguishing magnetic circuit resisting/matching electrodynamic repulsion and its DC relay
  • An arc-extinguishing magnetic circuit resisting/matching electrodynamic repulsion and its DC relay
  • An arc-extinguishing magnetic circuit resisting/matching electrodynamic repulsion and its DC relay

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Effect test

Embodiment 1

[0029] see Figure 3 to Figure 6As shown, an arc extinguishing magnetic circuit of the present invention that resists / matches electrodynamic repulsion includes a contact part, and the contact part includes two static contacts that are respectively used to provide current inflow and outflow, that is, the static contact 11 and the static contact head 12 and a moving reed 21, the two ends of the moving reed 21 are respectively matched with two static contacts 11, 12, when the moving and static contacts are in contact together, the current I flows from the static contact 11 , after passing through the moving reed 21, it flows out from the static contact 12; a first magnetic steel 31 is respectively provided on the outside of the two ends of the length of the moving reed 21; A piece of second magnetic steel 32; wherein, the polarities of the two first magnetic steels 31 are opposite to each other, and the polarities of the two second magnetic steels 32 are also opposite to each oth...

Embodiment 2

[0041] see Figure 7 to Figure 9 As shown, the arc extinguishing magnetic circuit of the present invention that resists / matches electrodynamic repulsion and its DC relay differs from Embodiment 1 in that, among the two second magnets 32, one of the second magnets The N pole of 32 faces the moving reed, and the second magnetic steel 32 facing the moving reed is arranged on the left side of the current flow direction of the moving reed 21, so as to match the ampere force generated by the magnetic fields of the four magnetic steels. The electric repulsion between the moving and static contacts increases the separation force between the moving and static contacts.

[0042] Because the positions of the two second magnetic steels 32 change, when the power is applied, the moving reed 21 flows through the current I. According to the left-hand rule, the moving reed 21 is subjected to a downward ampere force F32 under the action of the magnetic field. The force F32 is opposite to the p...

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Abstract

Disclosed are an arc extinction magnetic circuit resisting / matching electro-dynamic repulsion force and a DC relay thereof. The arc extinction magnetic circuit comprises stationary contacts and a movable contact spring matching one another. The outer sides of two ends in the length direction of the movable contact spring are respectively provided with a piece of first magnetic steel. The outer sides of two ends in the width direction of the movable contact spring are respectively provided with a piece of second magnetic steel, wherein the two pieces of first magnetic steel face each other with opposite poles, and the two pieces of second magnetic steel also face each other with opposite poles. The arc extinction magnetic circuit further comprises two yoke iron clamps respectively connected between the corresponding first and second magnetic steel. The poles, facing the movable contact spring, of the corresponding first and second magnetic steel are opposite. According to the present invention, magnetic steel with specific magnetism is disposed on the periphery of a contact portion, yoke iron clamps are additionally disposed between two sets of adjacent magnetic steel, and the magnetic flux of the magnetic steel is enabled to mainly go towards the yoke iron clamps to form main magnetic flux, such that the strength of an arc extinction magnetic field and the strength of a magnetic field which provides ampere power for a movable spring are greatly enhanced, and the magnetic utilization rate of the magnetic steel is greatly improved.

Description

technical field [0001] The invention relates to a DC relay, in particular to an arc-extinguishing magnetic circuit resisting / matching electric repulsion and the DC relay thereof, which are used for cutting off high-voltage and high-current DC loads. Background technique [0002] The relay is an electronic control device, which has a control system (also known as the input circuit) and a controlled system (also known as the output circuit), usually used in automatic control circuits, it actually uses a smaller current to control a larger An "automatic switch" of electric current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit. DC relay is one of the relays. Most of the existing DC relays adopt the scheme of moving reed direct action (also known as solenoid direct action). For example, Hongfa, Tyco, Panasonic, LS and other manufacturers all use screw Straight line solution. [0003] The contact part of this kin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H50/38
CPCH01H50/38
Inventor 钟叔明施生圣
Owner XIAMEN HONGFA ELECTRIC POWER CONTROLS
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