Flexible Insulation Structure of High Power Electromagnetic Relay

Abstract

The invention discloses a high-power magnetic relay flexible blocking structure which comprises a contact system cavity (1), an arc extinguishing cavity cover (2), a flexible blocking piece (3), a transmission shaft (4), yoke iron (5) and an electromagnetic system cavity (6). The flexible blocking piece (3) is a wafer provided with a round hole in the center and a drape-shaped surface. A cross section of the flexible blocking piece (3) is in a shape of a bilaterally symmetric wedge and sleeves the transmission shaft (4) in an interference matching mode. By adopting the flexible blocking structure design, abrasive chippings produced by a moving portion of a relay electromagnetic system in the relay working process are effectively prevented from polluting the contact surface of the relay electromagnetic system, and low contact resistance of a product is ensured. In addition, contact splashes produced by the relay electromagnetic system in the relay working process are effectively prevented from entering a motion gap in the relay electromagnetic system, stuck product actions are prevented, and the product reliability is improved.

Description

technical field [0001] The patent belongs to the field of sealed electromagnetic relays, in particular to a flexible barrier structure between a contact system and an electromagnetic system of a high-power sealed electromagnetic relay. Background technique [0002] With the continuous expansion and improvement of the size and function of spacecraft and weapon models, their power consumption is increasing day by day. The high-voltage DC high-power power supply and distribution system has been unanimously recognized by the industry for its high power supply reliability, high power supply quality, and high power supply efficiency. It is an inevitable trend of power supply and distribution for spacecraft and weapon models in the future. As one of the core devices in the DC high-power power supply and distribution system, the electromechanical high-voltage DC high-power sealed relay has the advantages of high inherent reliability, strong adaptability to space environment, small c...

AI Technical Summary

Problems solved by technology

Once metal splash and metal vapor enter the electromagnetic system, they will adhere between the armature and the yoke, causing the relay to jam, reducing the reliability of the product

On the contrary, the armature and the yoke will produce wear debris during multiple reciprocating relative movements. Once they enter the contact system, the contact resistance of the product will increase, and the large contact resistance heat will affect the electrical life and other performance indicators of the product.

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