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

公开(公告)号：US20180061544A1

公开(公告)日：2018-03-01

申请号：US15686504

申请日：2017-08-25

Applicant: DENSO CORPORATION ,  ANDEN CO., LTD.

Inventor： Ken TANAKA ,  Shota IGUCHI ,  Hiroaki MURAKAMI

IPC: H01F7/08

CPC classification number: H01F7/1653 ,  H01F3/00 ,  H01F7/08 ,  H01F7/081 ,  H01F7/13 ,  H01F7/1607 ,  H01F41/02 ,  H01F2007/086 ,  H01H50/36 ,  H01H50/42 ,  H01H51/065

Abstract: In a main magnetic circuit, first pulling force generated based on a first component of the magnetic flux flowing through the main magnetic path pulls a movable core in a reciprocation direction of the movable core. The first pulling force increases with a reduction of a dimension of the gap. In an auxiliary magnetic circuit, second pulling force generated based on the second component of the magnetic flux flowing through the auxiliary magnetic path pulls the movable core in the reciprocation direction of the movable core. In the auxiliary magnetic circuit, the second pulling force with the dimension of the gap being within a first range is changed to be higher than the second pulling force with the dimension of the gap being within a second range, the second range being smaller than the first range.

公开(公告)号：US20160293368A1

公开(公告)日：2016-10-06

申请号：US15087318

申请日：2016-03-31

Applicant: NIPPON SOKEN, INC. ,  DENSO CORPORATION ,  ANDEN CO., LTD.

Inventor： Ken TANAKA ,  Shota IGUCHI

IPC: H01H50/40 ,  G01R31/327 ,  H01H47/32

CPC classification number: H01H50/40 ,  H01H47/32 ,  H01H50/546 ,  H01H51/20

Abstract: A relay apparatus incorporates at least first and second relays having respective first and second electromagnetic coils, with a single yoke partially surrounding each of the coils. When current is passed through only the first electromagnetic coil, to activate the first relay, resultant magnetic flux acting on the armature of the second relay is attenuated by passing a current through the second electromagnetic coil to produce opposing-direction magnetic flux. When current is passed in the opposite direction through the second coil, to activate the second relay, the magnetic fluxes produced by the first and second electromagnetic coils become mutually reinforced, thereby reducing the power consumption required to activate both of the relays and to maintain that activated state.

Abstract translation: 中继装置包括具有相应的第一和第二电磁线圈的至少第一和第二继电器，单个轭部分地围绕每个线圈。 当电流仅通过第一电磁线圈时，为了激活第一继电器，通过使电流通过第二电磁线圈来产生相反方向的磁通量，作用在第二继电器的电枢上的合成磁通量被衰减。 当电流通过第二线圈的相反方向时，为了启动第二继电器，由第一和第二电磁线圈产生的磁通变得相互增强，从而降低了激活两个继电器所需的功率消耗，并且保持 激活状态。

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.