公开(公告)号：US20180087991A1

公开(公告)日：2018-03-29

申请号：US15713760

申请日：2017-09-25

Applicant: Nidec Tosok Corporation

Inventor： Tomoka OSAWA ,  Hironobu WAKABAYASHI ,  Toshiaki NAKAMURA ,  Hiroshi TATSUTA ,  Kenichi OZAWA

IPC: G01L19/14 ,  G01L19/00

CPC classification number: G01L19/147 ,  B81B2201/0264 ,  G01L19/0069 ,  G01L19/143

Abstract: In an oil-pressure-sensor attachment structure according to an aspect of the invention, an oil channel body includes a lower body and an upper body arranged at an upper side of the lower body in a superposed manner. The attachment structure includes the upper body, a sensor case, and a connection member including an electrical connection portion that electrically connects an external power supply with a sensor main body. The connection member contacts the upper body from the upper side. The upper body has a through hole in an up-down direction. The sensor case includes a columnar portion that extends in the up-down direction and is inserted into the through hole, a flange portion that protrudes outward in the radial direction from the columnar portion and is arranged to face the lower side of the upper body, and a first hook portion that is hooked to the connection member.

公开(公告)号：US20180087990A1

公开(公告)日：2018-03-29

申请号：US15713753

申请日：2017-09-25

Applicant: Nidec Tosok Corporation

Inventor： Tomoka OSAWA ,  Hironobu WAKABAYASHI ,  Toshiaki NAKAMURA ,  Hiroshi TATSUTA

IPC: G01L19/14 ,  G01L19/00

CPC classification number: G01L19/147 ,  B81B7/0051 ,  B81B2201/0264 ,  G01L19/003 ,  G01L19/0084 ,  G01L19/143 ,  H01L2224/48091

Abstract: According to an aspect of the present invention, there is provided an oil pressure sensor attaching structure in which a plurality of guide protrusion portions are disposed with a gap in a circumferential direction and surround an oil passage opening portion. The guide protrusion portions have an arc-shaped wall portion and a protrusion portion. An accommodation portion which has an accommodation opening portion opening upward is provided on an inside of the plurality of guide protrusion portions in a radial direction. The sensor case has a columnar portion, a plurality of flange portions, and an annular portion that surrounds the columnar portion. The flange portion is disposed between the upper surface and the protrusion portions in the vertical direction at a first position in the circumferential direction. The annular portion has a first portion and a second portion.

公开(公告)号：US20180057355A1

公开(公告)日：2018-03-01

申请号：US15681456

申请日：2017-08-21

Applicant: Nidec Tosok Corporation

Inventor： Tomoka OSAWA ,  Hironobu WAKABAYASHI ,  Toshiaki NAKAMURA ,  Hiroshi TATSUTA

IPC: B81B7/00 ,  F16H61/00 ,  G01L7/18

Abstract: A groove is provided at an outer side of an outer wall of a pressure sensor in a radial direction, and opens at one end side in an axial direction of the pressure sensor. A horizontally extending stopper is provided at an inner wall of a sensor accommodation recessed portion. A fixing portion is provided on the outer side of the outer wall of the pressure sensor in the radial direction, and enters the stopper. The fixing portion protrudes outward in the radial direction from the outer wall of the pressure sensor accommodated in the accommodation recessed portion, and contacts the stopper in the axial direction.

公开(公告)号：US20180038770A1

公开(公告)日：2018-02-08

申请号：US15666748

申请日：2017-08-02

Applicant: Nidec Tosok Corporation

Inventor： Tomoka OSAWA ,  Hironobu WAKABAYASHI ,  Toshiaki NAKAMURA ,  Hiroshi TATSUTA

IPC: G01M13/02 ,  F16K27/00

Abstract: A sensor case includes a body portion having a circular horizontal section. An upper body 1 includes an accommodation space 4 having a wall surface having a circular horizontal section, and the body portion is inserted in the accommodation space 4 such that the body portion is capable of rotating about a central axis thereof extending in a vertical direction. A stopper 50 is arranged to project in a horizontal direction in an outer circumferential surface of the body portion. A guide groove 51 is arranged to extend in the vertical direction at the wall surface of the accommodation space 4, and is arranged to allow the stopper 50 to move therein. The upper body 1 includes a restricting portion 52 arranged to restrict a vertical movement of the stopper 50.

公开(公告)号：US20200003656A1

公开(公告)日：2020-01-02

申请号：US16569839

申请日：2019-09-13

Applicant: Nidec Tosok Corporation

Inventor： Tomoka OSAWA ,  Hironobu WAKABAYASHI ,  Toshiaki NAKAMURA ,  Hiroshi TATSUTA

IPC: G01M13/02 ,  F16K27/00

Abstract: A sensor case includes a body portion having a circular horizontal section. An upper body 1 includes an accommodation space 4 having a wall surface having a circular horizontal section, and the body portion is inserted in the accommodation space 4 such that the body portion is capable of rotating about a central axis thereof extending in a vertical direction. A stopper 50 is arranged to project in a horizontal direction in an outer circumferential surface of the body portion. A guide groove 51 is arranged to extend in the vertical direction at the wall surface of the accommodation space 4, and is arranged to allow the stopper 50 to move therein. The upper body 1 includes a restricting portion 52 arranged to restrict a vertical movement of the stopper 50.

公开(公告)号：US20190199177A1

公开(公告)日：2019-06-27

申请号：US16232084

申请日：2018-12-26

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yutaka UEMATSU ,  Jaehyun KIM ,  Toshiaki NAKAMURA ,  Shuichi KINJO ,  Hiroshi SHIRAI

IPC: H02K11/215 ,  H02K7/116

Abstract: This disclosure provides an electric actuator and a rotation control mechanism. The electric actuator includes: a motor; a speed reduction mechanism; an output part; and a rotation detection device. The output part extends in an axial direction and is disposed on one side in the axial direction with respect to a motor shaft of the motor. The rotation detection device has: a magnet that is fixed to the output part and extends in a circumferential direction of the output part; and a rotation sensor that faces the magnet in the axial direction or in a radial direction. The magnet has multiple magnetic poles disposed in the circumferential direction. At least one magnetic pole of the magnet is disposed at a predetermined angular position with respect to an angle reference position of the output part in a rotation direction.

公开(公告)号：US20190173356A1

公开(公告)日：2019-06-06

申请号：US16209971

申请日：2018-12-05

Applicant: NIDEC TOSOK CORPORATION

Inventor： Hiroshi SHIRAI ,  Toshiaki NAKAMURA ,  Yutaka UEMATSU

IPC: H02K7/116 ,  F16H57/02 ,  H02K11/215

Abstract: There is provided an electric actuator including a motor, a first case having a first opening, a second case having a second opening that opens to the other side in the axial direction, a rotation sensor, and a plurality of bus bars which are electrically connected to a plurality of sensor terminals that extend from the rotation sensor and are held in the second case. The first and second cases are fixed to each other while the first opening and the second opening face each other in the axial direction, and parts connecting the plurality of bus bars and the plurality of sensor terminals are disposed at positions shifted from each other in a circumferential direction and radially outward from the rotation sensor. Among the plurality of connecting parts, at least one pair of adjacent connecting parts are disposed at positions different from each other in the radial direction.

公开(公告)号：US20180283970A1

公开(公告)日：2018-10-04

申请号：US15922957

申请日：2018-03-16

Applicant: Nidec Tosok Corporation

Inventor： Tomoka OSAWA ,  Hiroshi SHIRAI ,  Toshiaki NAKAMURA

IPC: G01L9/00

Abstract: According to one aspect of the present invention, there is provided an oil pressure sensor attachment structure including: the oil path body; the sensor case; and a fixing member which fixes the sensor case to the oil path body. The sensor case has a columnar portion which is disposed along a central axis extending in an up and down direction, and a flange portion which protrudes from the columnar portion to an outside in a radial direction. The fixing member has a fixing portion which comes into contact with the oil path body and is fixed thereto, and a pressing portion which comes into contact with the upper surface of the flange portion and presses the flanges portion against the oil path body. The fixing portion and the pressing portion are disposed with an interval therebetween.

公开(公告)号：US20180143093A1

公开(公告)日：2018-05-24

申请号：US15807907

申请日：2017-11-09

Applicant: Nidec Tosok Corporation

Inventor： Tomoka OSAWA ,  Hironobu WAKABAYASHI ,  Toshiaki NAKAMURA

IPC: G01L19/00

CPC classification number: G01L19/003

Abstract: An oil sensor attachment structure includes a guide projection disposed on an upper surface of an oil passage body and a sensor case. The guide projection includes a pair of first walls, a pair of first protrusions protruding toward each other, and a second wall. A receiving portion having a first receiving opening is provided between the first walls. The second wall faces the first receiving opening in a second direction with a gap therebetween. The sensor case includes a columnar portion, a flange protruding from the columnar portion, and a facing portion that is connected to the flange and that protrudes to a position above the flange. Each of the first protrusions has a first surface facing toward the other side in the second direction. The facing portion is disposed on the other side of the first surface in the second direction and faces the first surface.