Arc extinguishing structure for relay and method for manufacturing same
A relay and arc extinguishing technology, which is applied in the direction of relays, electromagnetic relays, detailed information of electromagnetic relays, etc., can solve problems such as contact ablation, small internal space of relays, and inability to take arc extinguishing measures
Active Publication Date: 2019-06-28
HARBIN INST OF TECH
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Problems solved by technology
In small sealed relays, contact (that is, reed) bonding is the most common form of failure. Due to the small internal space of the relay, effective arc extinguishing measures cannot be taken, resulting in frequent failure of the relay during work, especially large overload. In the on-off state, a severe arc will be generated, which will easily cause contact ablation or even welding, resulting in poor contact reliability of the contacts
Method used
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[0028] Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. figure 1 is a schematic perspective view of the arc extinguishing structure for the relay, which shows the condition that the magnet is installed on the bottom plate; figure 2 is a schematic perspective view of the arc extinguishing structure for a relay, showing the recessed portion; image 3 yes figure 1 A schematic top view of , showing the arc and the magnetic field of the magnet.
[0029] see Figure 1 to Figure 3 , this embodiment provides an arc extinguishing structure for a relay, including: a plurality of reeds and a magnet 100; The magnets 100 are installed on the bottom plate 200 adjacent to the ...
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The invention provides an arc extinguishing structure for a relay and a method for manufacturing the same, and relates to the field of relays. The arc extinguishing structure for the relay includes aplurality of reeds vertically mounted on the top surface of the bottom plate of the relay, wherein the sheet-like portions at one ends of the respective reeds extend in a set direction at intervals; and a magnet mounted on the bottom plate and adjacent to the plurality of reeds such that a magnetic field formed by the magnet passes through one ends of the respective reeds in a direction perpendicular to the top surface of the bottom plate. The Lorentz force formed by the magnet is configured to lengthen an arc formed between the reeds until the arc is extinguished, so as to quickly extinguishthe arc and reduce the damage of heat to an electromagnetic system during the operation of the small relay, thereby prolonging the service life of the relay and improving the capability of the relay of resisting overload.
Description
technical field [0001] The invention relates to the field of relays, in particular to an arc extinguishing structure for a relay and a manufacturing method thereof. Background technique [0002] Small sealed electromagnetic relays are widely used in aviation, aerospace, communication and other fields, and play key roles in signal transmission and circuit switching. In small sealed relays, contact (that is, reed) bonding is the most common form of failure. Due to the small internal space of the relay, effective arc extinguishing measures cannot be taken, resulting in frequent failure of the relay during work, especially large overload. In the on-off state, severe arcs will be generated, which may easily cause contact ablation or even welding, resulting in poor contact reliability of the contacts. Contents of the invention [0003] The object of the present invention is to provide an arc extinguishing structure for a relay and its manufacturing method, through the Lorentz f...
Claims
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Inventor 由佳欣熊方圆李博丁丁王贵斌
Owner HARBIN INST OF TECH