Direct-current relay with auxiliary switch mechanism

Abstract

The invention provides a direct-current relay with an auxiliary switch mechanism, which comprises an auxiliary switch assembly, an auxiliary contact and a ceramic seat, and is characterized in that the auxiliary switch assembly is composed of an upper shielding cover, two reeds and auxiliary ejector rods, and the auxiliary push rod is placed in a track of the upper shielding cover; the two reeds are inserted into gaps of the upper shielding cover and placed on table boards, with different heights, of the upper shielding cover, the reeds are placed on the auxiliary ejector rods, auxiliary contacts are in point contact with the reeds, the two table boards with different heights guarantee that a certain gap is formed between the two reeds, a plurality of convex ribs are arranged in the inner structure of the ceramic seat, the upper shielding cover is arranged inside, a connecting ring is fixedly connected below the ceramic seat, a magnetic pole piece is fixedly connected to the bottom of the connecting ring, and a lower shielding cover is arranged above the magnetic pole piece.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to a DC relay with an auxiliary switch mechanism. Background technique [0002] The relay is an electrical control device, which is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change of the input quantity meets the specified requirements. It has an interactive relationship between the control system and the controlled system. Usually used in automatic control circuits, it is actually a kind of automatic switch that uses small current to control high current operation, so it plays the role of automatic adjustment, safety protection, conversion circuit, etc. in the circuit. [0003] However, in the prior art, the space of the DC relay is enough and it is natural and easy to realize the auxiliary circuit. Due to the limited space and the way of ceramic packaging, ceramic DC relays with a ra...

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Problems solved by technology

[0003] However, in the prior art, the space of the DC relay is enough and it is natural and easy to implement the auxiliary circuit. Due to the limited space and the way of ceramic packaging, ceramic DC relays with a rated current carrying capacity below 250A on the market today are rarely equipped with an auxiliary circuit, and are often integrated with the product as a whole. Associated, failed to achieve an independent organization, the cost of mass production is high, the reliability is poor (pollution is not isolated), and it cannot meet market demand

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