公开(公告)号：US20180372567A1

公开(公告)日：2018-12-27

申请号：US16064162

申请日：2016-12-19

Applicant: DENSO CORPORATION

Inventor： Satoru JINNO

IPC: G01L3/10 ,  G01L5/22

Abstract: A detection device includes a conductive member, a facing member, and a sensor portion. The conductive member is provided to be conductive to a grounded member having a ground potential. The sensor portion includes a sensor element, a sensor main body, and a grounded terminal. The sensor element is disposed in a sensor placement region which is located between the conductive member and the facing member and in which a distance between the conductive member and the facing member is shortest. The conductive member is provided to be conductive to the grounded terminal or a grounded wiring portion connected to the grounded terminal in a conductive region different from the sensor placement region. Accordingly, static electricity and noise escape to the grounded member without passing through the sensor main body. Therefore, damage to and malfunction of the sensor are restricted.

公开(公告)号：US20190383679A1

公开(公告)日：2019-12-19

申请号：US16550913

申请日：2019-08-26

Applicant: SOKEN, INC. ,  DENSO CORPORATION

Inventor： Ken TANAKA ,  Shingo SHIMIZU ,  Shigetoshi FUKAYA ,  Satoru JINNO ,  Toshiro SUZUKI

IPC: G01L3/10 ,  G01R33/00 ,  G01R33/02

Abstract: A torque sensor includes: a torsion bar coaxially connecting a first shaft and a second shaft; a multipole magnet; a pair of magnetic yokes; and a magnetic sensor capable of detecting a density of magnetic flux formed by the pair of the magnetic yokes and having an inner magnetosensitive surface facing inward in a radial direction and an outer magnetosensitive surface facing outward in the radial direction when viewed along a central axis of the torsion bar. The torque sensor includes: a magnetic flux guiding member capable of magnetically coupling the magnetic yoke and the outer magnetosensitive surface of the magnetic sensor; and a water blocking portion capable of housing the magnetic sensor and the magnetic flux guiding member to restrict the magnetic sensor from coming into contact with water.

公开(公告)号：US20190212216A1

公开(公告)日：2019-07-11

申请号：US16232643

申请日：2018-12-26

Applicant: DENSO CORPORATION

Inventor： Ken TANAKA ,  Shingo SHIMIZU ,  Toshiro SUZUKI ,  Satoru JINNO ,  Shigetoshi FUKAYA

IPC: G01L3/10

Abstract: A torque detector detects a torsional torque between a first shaft and a second shaft based on a torsional displacement of an elastic member coaxially connecting the first shaft and the second shaft. The torque detector includes a magnetic flux generation unit and a magnetic sensor. The magnetic flux generation unit rotates with rotation of the first shaft and includes a first pole and a second pole into and out of which lines of magnetic force enter and exit. The magnetic sensor rotates with rotation of the second shaft and includes a detection surface for detecting a magnetic flux or a magnetic flux density. The first pole and the second pole are arranged to face each other across the magnetic sensor.

公开(公告)号：US20200158795A1

公开(公告)日：2020-05-21

申请号：US16748934

申请日：2020-01-22

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Toshiro SUZUKI ,  Satoru JINNO ,  Shigetoshi FUKAYA ,  Ken TANAKA ,  Kensuke KOBAYASHI

IPC: G01R33/09 ,  G01R33/00 ,  H02K1/14 ,  H02K1/27

Abstract: A torsion bar of a torque detection device converts torque applied between an input shaft and an output shaft to a torsional displacement. A pair of yokes is secured to the output shaft, and forms a magnetic circuit in a magnetic field of a multipolar magnet secured to the input shaft. A magnetic flux guide member has a main body facing the yoke to guide magnetic flux of the magnetic circuit. A magnetic sensor is placed at an extension, and detects magnetic flux guided by the magnetic flux guide member. The magnetic flux guide member is configured to allow magnetic permeance per unit area between the magnetic flux guide member and the yoke to be greater at a location in the main body from which the extension is branched, than at a circumferential end portion of the main body.

公开(公告)号：US20200041366A1

公开(公告)日：2020-02-06

申请号：US16590717

申请日：2019-10-02

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Ken TANAKA ,  Shigetoshi FUKAYA ,  Toshiro SUZUKI ,  Satoru JINNO

IPC: G01L3/10 ,  B62D6/10 ,  G01R33/00

Abstract: A torque detection device includes a first magnetic circuit part, a second magnetic circuit part, a circuit board module, and a sensor housing. The first magnetic circuit part is disposed on one side of a multipolar magnet in an axial direction. The second magnetic circuit part is disposed on the other side of the multipolar magnet in the axial direction. The circuit board module includes plural magnetic sensors mounted thereon and facing the magnetic circuit on one end side in a width direction being included in the plane and intersecting the arrangement direction. The sensor housing is coupled to one end side in the arrangement direction of the circuit board module so as to support the circuit board module on the one end side in the arrangement direction of the circuit board module.

公开(公告)号：US20190391025A1

公开(公告)日：2019-12-26

申请号：US16561748

申请日：2019-09-05

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Ken TANAKA ,  Toshiro SUZUKI ,  Satoru JINNO ,  Shigetoshi FUKAYA

IPC: G01L3/10 ,  G01L5/22

Abstract: A torque detecting device detects a torsional torque between a first shaft and a second shaft based on a torsional displacement of a resilient member linking the first shaft and the second shaft coaxially. The torque detecting device is provided with: a magnet fixed to the first shaft; a first yoke fixed to the second shaft and arranged to be rotatable with respect to the magnet; a second yoke fixed to the second shaft and arranged to be rotatable together with the first yoke with respect to the magnet; a magnetic flux collector which collects magnetic flux; and a magnetic sensor which detects magnetic flux density. The magnetic flux collector is located to face both the first yoke and the second yoke. The magnetic sensor is located between the first yoke, from among the first yoke and the second yoke, and the magnetic flux collector, and detects the magnetic flux density between the first yoke and the magnetic flux collector.

公开(公告)号：US20190285490A1

公开(公告)日：2019-09-19

申请号：US16430479

申请日：2019-06-04

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Toshiro SUZUKI ,  Shigetoshi FUKAYA ,  Satoru JINNO ,  Ken TANAKA

IPC: G01L3/10

Abstract: A torque sensor is provided with a torsion bar which converts torque applied between a first shaft and a second shaft into a torsional displacement. A multipole magnet is fixed to one end side of either the first shaft or the torsion bar and in which N poles and S poles are magnetized alternately in a circumferential direction. A plurality of first yokes is provided in the circumferential direction on a radially outer side of the multipole magnet. A plurality of second yokes is provided in the circumferential direction on the radially outer side of the multipole magnet in such a way that each second yoke is sandwiched between two first yokes. A set of magnetic flux collecting members includes a first main body portion and a second main body portion, and forms a magnetic circuit in conjunction with the plurality of first yokes and the plurality of second yokes in a magnetic field generated by the multipole magnet. A magnetic sensor is provided radially outside the first main body portion and the second main body portion to detect a magnetic flux density generated in the magnetic circuit