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Opposite arc isolation device of high voltage direct current relay

  • US 10,453,628 B2
  • Filed: 07/07/2016
  • Issued: 10/22/2019
  • Est. Priority Date: 04/29/2016
  • Status: Active Grant
First Claim
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1. An opposite arc isolation device of a high voltage direct current relay, comprising a movable contact assembly and a fixed contact assembly, wherein the movable contact assembly comprises a movable spring plate and a left movable contact and a right movable contact fixed at left and right ends of the movable spring plate;

  • the fixed contact assembly comprises a left fixed contact corresponding to the left movable contact and a right fixed contact corresponding to the right movable contact an arc isolation member made of an insulating material is provided between the left movable contact and the right fixed contact a front-to-rear dimension L of the arc isolation member is greater than a front-to-rear width M of a joint surface of the movable contacts with the fixed contacts; and

    , the arc isolation member has a height H that enables the isolation of opposite arcs between the two sets of movable and fixed contacts, wherein the arc isolation member is fixed on the movable spring plate;

    positioning notches are formed on a front side and a rear side of the movable spring plate;

    an accommodating groove running downward through the arc isolation member is formed at a lower end of the arc isolation member, and the accommodating groove transversely runs through the arc isolation member;

    a buckle structure is formed on the arc isolation member; and

    , the buckle structure is fitted with the positioning notches to position the movable spring plate within the accommodating groove.

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