公开(公告)号：US09671436B2

公开(公告)日：2017-06-06

申请号：US14765003

申请日：2014-03-10

Applicant: DENSO CORPORATION

Inventor： Takeshi Tsukamoto ,  Tatsuya Takagi ,  Teruo Oda

IPC: G01R19/00 ,  G01R15/20

CPC classification number: G01R19/0092 ,  G01R15/202

Abstract: An electric current sensor includes a core having a coupling portion formed by bending a part of a plate member, and one end portion and the other end portion of the plate member are disposed to oppose to each other through a constant magnetic gap on a side opposite from the coupling portion. The core has: a first tapered portion in which a width of the plate member continuously decreases from one end of the coupling portion adjacent to the one end portion to a distal end of the one end portion; and a second tapered portion in which the width of the plate member continuously decreases from an other end of the coupling portion adjacent to the other end portion to a distal end of the other end portion.