Title:
Rotation detector
Document Type and Number:
Japanese Patent JP6353380
Kind Code:
B2
Abstract:
To provide a rotation detection device that has a miniaturized sensor IC in comparison with a prior art. A rotation detection device 5 includes: a magnet 2 that forms a magnetic field toward a tooth surface of a gear 3; and a sensor 1 disposed between the magnet 2 and the gear 3, the sensor 1 including: at least a pair of magnetic detection elements 11 x1 and 11 x2 that outputs signals according to a magnetic flux density in a radial direction of the gear 3; and a magnetic concentrator 12 that induces, in the radial direction of the gear 3, a component in a circumferential direction of the gear 3 in the magnetic flux density on detection surfaces of the magnetic detection elements 11 x1 and 11 x2 , the sensor 1 detecting a variation in a magnetic flux density accompanying the rotation of the gear 3.
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Inventors:
Yoshiya Takumi
Application Number:
JP2015034007A
Publication Date:
July 04, 2018
Filing Date:
February 24, 2015
Export Citation:
Assignee:
Melexis Technologies SA
International Classes:
G01D5/245
Domestic Patent References:
| JP2014145777A | ||||
| JP200271381A | ||||
| JP2012168047A | ||||
| JP200365796A |
Foreign References:
| US20150022187 | ||||
| WO2014029885A1 |
Attorney, Agent or Firm:
Toshiyuki Araki
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