relay
A technology of relays and contact parts, which is applied in the direction of relays, electromagnetic relays, detailed information of electromagnetic relays, etc., can solve problems such as reduced lifespan, product loss of function, loss of function, etc., to achieve the effect of avoiding fire and improving safety
Active Publication Date: 2019-11-08
BYD CO LTD
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Problems solved by technology
[0002] During the use of electrical appliances, there may be short-circuit problems, and during the use of relays, short-circuit may cause problems such as excessive load current or circuit sintering, which will cause the product to lose its function and cause failure in use.
[0003] At the same time, in the existing scheme, the fuse or other overload protection device is installed in the relay. When the fuse is blown, arcing will occur between the disconnected fuses; due to the existence of the arc, the fuse or overload protection device will not be able to It is disconnected in time, so that during the use of the relay, there are still problems of easy sintering, loss of function, and shortened life
Furthermore, after the fuse is disconnected, if the current is too large; even if the arc between the fuses is controlled, there will be a certain arcing phenomenon between the two static contacts
Method used
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[0037] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.
[0038] Since there is no overload protection device in the related technical relay, when the relay is closed, if the load current is too large or the circuit is short-circuited, it will easily cause sintering, which will cause the product to lose its function and cause danger. In addition, there is no arc extinguishing device in the above technology, so the arc drawing time is long and the product life is short. In order to solve one of the technical problems in the related technology at least to a ce...
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The invention discloses a relay. The relay comprises an enclosure, a movable contact bridge and a driving device, wherein a first static contact and a second static contact are arranged on the enclosure and are isolated with each other, the movable contact bridge comprises a driving part, a first contact part, a second contact part and a first insulation cavity, the first contact part is corresponding to the first static contact, the second contact part is corresponding to the second static contact, a first fuse is arranged in the first insulation cavity, the first contact part is electrically connected with the driving part via the first fuse, and the second contact part is electrically connected with the driving part. According to the relay disclosed by the embodiment of the invention, the effects of overload protection and short-circuit protection are achieved by the fuse, so that the safety of a circuit system with the relay is improved, and a fire caused by overcurrent or short circuit is prevented.
Description
Technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a relay. Background technique [0002] During the use of electrical appliances, there may be short-circuit problems, and during the use of relays, short-circuits may cause problems such as excessive load current or circuit sintering, which will cause the product to lose function and cause malfunctions. [0003] At the same time, in the existing scheme, the fuse or other overload protection device is set in the relay. When the fuse is blown, an arc will occur between the disconnected fuses; due to the existence of the arc, the fuse or the overload protection device will not be able to When the relay is disconnected in time, there are still problems of easy sintering, loss of function, and reduced service life during the use of the relay. Furthermore, after the fuse is disconnected, if the current is too large; even if the arc between the fuse is controlled, there will be a ...
Claims
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IPC IPC(8): H01H50/54H01H50/02H01H50/00H01H9/30
CPCH01H9/30H01H50/00H01H50/02H01H50/54H01H2050/025
Inventor 黄彩丽姚保同汪鲁建刘斯源
Owner BYD CO LTD