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.