Patent ID: 11867717
Assignee: PROTERIAL, LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A rotation speed sensor comprising:
a sensor component having a first surface, a second surface on an opposite side of the first surface, a first magnetic sensing element arranged between the first surface and the second surface, and a second magnetic sensing element arranged between the first surface and the second surface so as to separate from the first magnetic sensing element;
a magnet arranged in a region closer to the second surface of the sensor component than the first surface of the sensor component; and
a magnetic plate arranged between the second surface of the sensor component and the magnet and made of a magnetic material different from the magnet,
wherein the magnetic plate includes an opening formed in a first direction that is a direction in which the sensor component, the magnetic plate and the magnet are arranged,
the opening is a through hole that penetrates the magnetic plate in the first direction,
one end of the opening faces the sensor component, and
the other end of the opening faces the magnet.