Magnetic sensor
AssigneeResonac Corporation
InventorTatsunori Shino
Life of this patent
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Abstract
A magnetic sensor 1 includes a plurality of sensitive elements 31 made of a soft magnetic material. The sensitive elements 31 have a longitudinal direction and a transverse direction and have a uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction. The sensitive elements 31 are configured to sense a magnetic field by a magnetic impedance effect. The sensitive elements 31 are arranged with a gap in between in the transverse direction. The magnetic sensor 1 includes a connecting portion 32 configured to connect longitudinal ends of transversely adjacent ones of the sensitive elements 31. The connecting portion 32 has a width in the transverse direction that narrows as the connecting portion 32 approaches the ones of the sensitive elements 31 along the longitudinal direction.
Claims7
A magnetic sensor comprising:
- a plurality of sensitive elements made of a soft magnetic material, the plurality of sensitive elements having a longitudinal direction and a transverse direction, the plurality of sensitive elements having a uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction, the plurality of sensitive elements being configured to sense, by a magnetic impedance effect, a magnetic field applied in the longitudinal direction, the plurality of sensitive elements being arranged with a gap in between in the transverse direction;
- and
- a connecting portion configured to connect longitudinal ends of transversely adjacent ones of the plurality of sensitive elements, wherein
- the connecting portion comprises an extended portion with a uniform width in the longitudinal direction and tapered portions that have a width in the transverse direction that narrows as the connecting portion approaches a center portion of the ones of the plurality of sensitive elements along the longitudinal direction, the connecting portion inducing magnetic lines of force into the longitudinal ends of the plurality of sensitive elements, the extended portion extending along the transverse direction and protruding in the transverse direction relative to the ones of the plurality of sensitive elements, the tapered portions connecting the extended portion with longitudinal ends of the plurality of sensitive elements.
A magnetic sensor comprising:
- a plurality of sensitive elements made of a soft magnetic material, the plurality of sensitive elements having a longitudinal direction and a transverse direction, the plurality of sensitive elements having a uniaxial magnetic anisotropy in a direction intersecting the longitudinal direction, the plurality of sensitive elements being configured to sense, by a magnetic impedance effect, a magnetic field applied in the longitudinal direction, the plurality of sensitive elements being arranged with a gap in between in the transverse direction;
- and
- a connecting portion configured to connect longitudinal ends of transversely adjacent two of the plurality of sensitive elements, wherein
- the connecting portion comprises an extended portion that has a uniform width in the longitudinal direction and protrudes in the transverse direction relative to the two of the plurality of sensitive elements that the connecting portion connects;
- and tapered portions that connect the extended portion with longitudinal ends of the plurality of sensitive elements and have a width in the transverse direction that narrows as the connecting portion approaches a center portion of the ones of the plurality of sensitive elements along the longitudinal direction, and
- a length of the connecting portion in the transverse direction is longer than a combined length of widths of the two of the plurality of sensitive elements in the transverse direction and a gap between the two of the plurality of sensitive elements in the transverse direction, and
- the connecting portion gathers a magnetic lines of force to the connecting portion from both sides in the transverse direction.
Dependencies are inferred from the claim text.