US 12,111,186 B2
Magnetic sensor unit for accurately detecting change of magnetic field
Shoji Kishi, Tsurugashima (JP); and Toshiya Yoshida, Tsurugashima (JP)
Assigned to TOYO DENSO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TOYO DENSO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 7, 2022, as Appl. No. 17/961,607.
Claims priority of application No. 2021-173786 (JP), filed on Oct. 25, 2021.
Prior Publication US 2023/0132014 A1, Apr. 27, 2023
Int. Cl. G01D 5/14 (2006.01)
CPC G01D 5/145 (2013.01) [G01D 2205/40 (2021.05)] 9 Claims
OG exemplary drawing
 
1. A magnetic sensor unit comprising:
a magnetic body fixed to a second member that is relatively displaced with respect to a first member;
at least two magnets fixed to the magnetic body and disposed apart from each other in a relative displacement direction of the second member; and
a magnetic sensor that is fixed to the first member and is configured to detect a change of a magnetic field formed by the at least two magnets, wherein
the magnetic body has a convex portion protruding between the two magnets,
the convex portion has abutting portions on which the two magnets abut,
the magnetic body is provided with concave portions each at a portion to which each magnet is fixed,
by provision of the concave portions, the convex portion is relatively formed between the two magnets on the magnetic body, and
each of the concave portions has a depth on a side of the abutting portion deeper than a depth of the other portion thereof.