×

CURRENT SENSOR

  • US 20180321281A1
  • Filed: 04/24/2018
  • Published: 11/08/2018
  • Est. Priority Date: 05/08/2017
  • Status: Abandoned Application
First Claim
Patent Images

1. A current sensor comprising:

  • a magnetic core member including a core main body formed of a cylindrical body that internally surrounds, at a distance, a conducting member through which electricity is passed, the cylindrical body having a gap portion formed therein that is formed as a slit extending in a direction along a cylinder axis of the cylindrical body, the magnetic core member being configured to generate magnetic flux corresponding to current flowing through the conducting member;

    a magnetic sensor configured to output a signal corresponding to a magnetic flux density of the gap portion;

    a magnetic shield member including a shield main body that surrounds external sides of the core main body, the shield main body being operable to shield magnetism between an interior and an exterior of the shield main body; and

    a sensor housing member configured to internally house the magnetic core member, the magnetic sensor, and the magnetic shield member, whereinthe sensor housing member includes a cylindrical housing body shaped as a cylinder and operable to be inserted through the interior of the magnetic core member in a direction along the cylinder axis and have the conducting member inserted through the interior of the cylindrical housing body itself in the direction along the cylinder axis,the cylindrical housing body includesan internal circumferential wall disposed facing and spaced a gap apart from the conducting member that has been inserted through the cylindrical housing body, the gap being annular, anda plurality of holding portions protruding from a plurality of respective locations of the internal circumferential wall toward the conducting member that has been inserted through the cylindrical housing body, the holding portions being operable to hold the conducting member with the gap being maintained, andthe cylindrical housing body forms an air layer using the gap between the cylindrical housing body and the conducting member that has been inserted through the interior thereof.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×