Electromagnetic relay capable of being applied to three-phase alternating current
A technology of electromagnetic relay and three-phase alternating current, applied in the direction of electromagnetic relay, electromagnetic relay details, relay, etc., can solve the problems that electromagnetic relay does not have the function of monostable state, does not have the function of forced guidance, etc., to increase creepage Distance, the effect of improving safety performance
Pending Publication Date: 2020-12-29
XIAMEN HONGFA ELECTROACOUSTIC CO LTD
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Problems solved by technology
[0003] The electromagnetic relays in the prior art are generally suitable for single-phase circuits, and only a few electromagnetic relays are suitable for three-phase alternating current, but some of these electromagnetic relays do not have the function of monostable state, and some do not have the function of forced guidance, etc.
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[0030] Examples, see Figure 1-Figure 6 As shown, an electromagnetic relay applicable to three-phase alternating current of the present invention includes a base 1, a magnetic circuit part 2, and a housing (not shown in the figure), and the magnetic circuit part 2 includes a coil equipped with an iron core 25 and an enameled wire 24 The frame 21 , the armature 23 and the yoke 22 connected with the iron core 25 , the coil frame 21 lies on the base 1 , the armature 23 is arranged at the knife edge of the yoke 22 and cooperates with the pole surface of the iron core 25 . Described iron core 25 is specifically inserted in the bobbin 21, and its two ends are exposed, enameled wire 24 is wound outside the bobbin 21, and yoke 22 is L-shaped, and one side thereof is fixedly connected with the end of armature 23 of iron core 25 ( Alternatively, it can also be integrally formed), and the other side is fitted on the side of the coil frame 21 . The present invention also includes at leas...
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The invention discloses an electromagnetic relay capable of being applied to three-phase alternating current. The electromagnetic relay comprises a base and a magnetic circuit part, the magnetic circuit part comprises a coil rack, an armature and a yoke, the coil rack is provided with an iron core and an enameled wire, the yoke is connected with the iron core, the coil rack is horizontally arranged on the base, and the armature is arranged at a knife edge of the yoke and is matched with a pole surface of the iron core; the relay further comprises at least three groups of contact units arrangedin parallel, each group of contact units comprises a movable spring part and a static spring part, and the movable spring parts and the static spring parts are respectively arranged on the base and are correspondingly matched with each other; and the armature is connected with the movable spring parts of the contact units through pushing cards so as to drive the movable spring parts to act. The relay is suitable for three-phase alternating current, also has a monostable function, and can achieve the forced guiding through the pushing cards, thereby improving the safety performance of the relay.
Description
technical field [0001] The invention relates to an electromagnetic relay, in particular to an electromagnetic relay applicable to three-phase alternating current. Background technique [0002] Electromagnetic relay is a relay that uses electromagnetic force to drive the relative movement of mechanical parts to produce a predetermined response. It generally consists of a magnetic circuit part, a moving spring part, a static spring part, a base and a shell. The magnetic circuit part includes an iron core and an enameled wire wound Coil frames, armatures, yokes, etc. When the coil (that is, the enameled wire) passes through the current, an electromagnetic force is generated, and the armature is attracted and contacts the pole surface of one end of the iron core, thereby driving the moving contact of the moving spring part to contact or separate from the static contact of the static spring part; when the coil is in the When the current disappears, the electromagnetic force disa...
Claims
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IPC IPC(8): H01H50/00H01H50/04H01H50/16H01H50/18H01H50/54H01H50/64
CPCH01H50/002H01H50/041H01H50/16H01H50/18H01H50/541H01H50/64
Inventor 张茂松谭忠华刘金枪朱艺青
Owner XIAMEN HONGFA ELECTROACOUSTIC CO LTD