Patents Assigned to Nidec Tosok Corporation
  • Patent number: 10907665
    Abstract: A pressure control device includes a body having a groove-shaped flow path including a groove part and a widened part, and a filter unit capturing foreign matters mixed in a fluid which passes through the groove-shaped flow path; the filter unit having a frame body including a through hole part and a filter member in a planar plate shape disposed with respect to the through hole part, and the filter unit being accommodated in the widened part. The frame body has: a first part having a first shape, a second part having a second shape smaller than the first shape, and a step part located at a boundary part between the first part and the second part The second part has a storage part provided in a penetrating manner on a bottom part side of the groove-shaped flow path and storing the captured foreign matters.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: February 2, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Masaru Miyagi, Kenichi Ozawa
  • Patent number: 10912235
    Abstract: A motor includes a rotor having a motor shaft along a central axis extending in an axial direction; a stator facing the rotor with a gap interposed therebetween in a radial direction; a motor driving inverter unit supplying electric power from a battery to the stator; a charger having a charger inverter unit for charging the battery; and a housing accommodating the stator, the motor driving inverter unit and the charger. The housing has a cooling flow path through which a coolant flows, an inlet port into which the coolant flowing in the cooling flow path flows, and an outlet port from which the coolant flowing in the cooling flow path flows. The motor driving and the charger inverter units are in the housing along the cooling flow path. The motor driving inverter unit is closer to the inlet port side a position where the charger inverter unit is disposed.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: February 2, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventor: Yoshihisa Okuhata
  • Patent number: 10908042
    Abstract: A pressure sensor device includes a pressure sensor having a housing positioned on a center axis extending vertically, a sensing hole provided in a lower part of the housing, and an electrode unit provided in an upper part of the housing; and a connecting member having a contact spring that is pressed against the electrode unit of the pressure sensor. The electrode unit includes a first frame-shaped electrode having a frame-like shape that is rotationally symmetrical with respect to the center axis; and an annular first-surface portion on which the first frame-shaped electrode is placed.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: February 2, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Tomoka Osawa, Hiroshi Shirai, Toshiaki Nakamura
  • Patent number: 10907741
    Abstract: The control valve device includes a valve body having a stacked first body and second body. The first body includes a first oil passage, a filter covering an opening of the first oil passage, a first accommodating part recessed from a first boundary surface surrounding the opening of the first oil passage, and two second accommodating parts which are more recessed than the first accommodating part from the first boundary surface on outer sides of opposite end portions of the first accommodating part. The filter includes a filter part covering the opening of the first oil passage and two leaf springs respectively disposed in the two second accommodating parts, and an end portion of each of the leaf springs comes into contact with a first wall surface of the second accommodating parts facing the first oil passage side.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: February 2, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Tomohiro Yasuda, Kenta Kuramochi, Takanori Ara, Weiming Chen
  • Patent number: 10910911
    Abstract: An electric actuator includes: a motor; a first case accommodating the motor; a second case located on one side in an axial direction of the first case; a bearing holder fixed to the first case; and a first bearing held by the bearing holder. The first case has a wall part covering the other side in the axial direction of a stator and having a through hole. The bearing holder has: a holder cylindrical part holding the first bearing and inserted into the through hole; and a holder flange part fixed to the wall part. An inner diameter of the through hole is larger than an outer diameter of the holder cylindrical part. At least a part of a radially outer surface of the holder cylindrical part in a circumferential direction is located in a position radially inside and away from a radially inner surface of the through hole.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: February 2, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Hiroshi Shirai, Shuichi Kinjo, Kazuhiro Saito
  • Patent number: 10892667
    Abstract: A motor includes a rotor that has a motor shaft disposed along a central axis extending in an axial direction; a stator facing the rotor with a gap interposed therebetween in a radial direction; a motor driving inverter unit supplying electric power from a battery to the stator; a charger having a charger inverter unit that charges the battery; and a housing accommodating the stator, the motor driving inverter unit and the charger The housing has a cooling flow path through which a coolant flows, a stator accommodation unit accommodating the stator, an inverter accommodation unit positioned outside the stator accommodation unit in the radial direction, a charger accommodation unit positioned outside the stator accommodation unit in the radial direction, and an intermediate partitioning wall partitioning the inverter accommodation unit and the charger accommodation unit The cooling flow path is disposed in the intermediate partitioning wall.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: January 12, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventor: Yoshihisa Okuhata
  • Publication number: 20200408321
    Abstract: An electromagnetic valve includes: a solenoid, including a bobbin, a plunger, and a coil that moves the plunger; and a valve mechanism, including a flow path member made of resin that includes a first flow path, a second flow path, a relay flow path and a valve body housing, a valve body made of resin that is inserted into the valve body housing, movably supported along an axial direction together with the plunger, and switches between passage and blockage of a fluid via the relay flow path between the first flow path and the second flow path, and a sliding member made of metal and having a tubular shape, provided concentrically with the valve body housing. The valve body slides inside the sliding member, wherein a low friction layer reducing friction with the valve body is provided on an inner circumferential surface on which the valve body slides.
    Type: Application
    Filed: May 11, 2020
    Publication date: December 31, 2020
    Applicant: NIDEC TOSOK CORPORATION
    Inventors: Dongming CHEN, Tomohiko NAKANISHI
  • Publication number: 20200408319
    Abstract: An electromagnetic valve includes a solenoid having a plunger supported movably along an axial direction, and a valve mechanism having a valve body in a columnar shape supported movably along the axial direction together with the plunger and switching between passage and blockage of a fluid. The solenoid has a core and a yoke which guide the plunger. The plunger has a plunger pin protruding at least on the other side in the axial direction in the one side in the axial direction and the other side in the axial direction. A rust-resistant member having rust resistance is provided on an end of the yoke on the other side in the axial direction, wherein the plunger pin contacts and separates from the rust-resistant member as the plunger moves, and the rust-resistant member has an area larger than a contact area of the plunger pin with the rust-resistant member.
    Type: Application
    Filed: May 12, 2020
    Publication date: December 31, 2020
    Applicant: NIDEC TOSOK CORPORATION
    Inventors: Dongming CHEN, Tomohiko NAKANISHI
  • Publication number: 20200408320
    Abstract: An electromagnetic valve includes a solenoid having a plunger supported movably along an axial direction, and a valve mechanism having a flow path member which has a valve body housing disposed along the axial direction and a valve body which is in a columnar shape inserted into the valve body housing and which switches between passage and blockage of a fluid. The valve mechanism has a connecting member made of metal and a gasket in a ring shape provided concentrically with respect to the valve body housing. A boundary line facing the other side in the axial direction between the flow path member and the connecting member is located further to the outer side than a contact inner diameter of a part of the gasket that is in contact with the flow path member.
    Type: Application
    Filed: May 11, 2020
    Publication date: December 31, 2020
    Applicant: NIDEC TOSOK CORPORATION
    Inventors: Dongming CHEN, Tomohiko NAKANISHI
  • Publication number: 20200408318
    Abstract: An electromagnetic valve includes: a solenoid, including a bobbin, a plunger, and a coil that moves the plunger; and a valve mechanism, including a flow path member that includes a first flow path, a second flow path, a relay flow path and a valve body housing, and a valve body that is inserted into the valve body housing, movably supported along an axial direction together with the plunger, and switches between passage and blockage of a fluid via the relay flow path between the first flow path and the second flow path. The valve body includes a protrusion provided protruding radially outward from an outer periphery of the valve body and guided by an inner wall surface of the valve body housing when the valve body moves.
    Type: Application
    Filed: May 14, 2020
    Publication date: December 31, 2020
    Applicant: NIDEC TOSOK CORPORATION
    Inventors: Dongming CHEN, Tomohiko NAKANISHI
  • Patent number: 10879763
    Abstract: An electric actuator is provided and includes: a motor unit having a motor shaft extending in an axial direction, a speed reducer connected to one side of the motor shaft in the axial direction, an output section having an output shaft to which rotation of the motor shaft is transmitted via the speed reducer, and a housing accommodating the motor unit, the speed reducer and the output section. The motor shaft and the output shaft are disposed apart from each other in the radial direction of the motor shaft. The motor unit has a first bearing that rotatably supports the motor shaft. The housing has a housing main body formed of resin, and a metal member formed of metal and held by the housing main body. The metal member has a bearing holding section that holds the first bearing, and an output shaft support section that supports the output shaft.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: December 29, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Yutaka Uematsu, Shun Kato, Ryunosuke Oikawa, Yuzo Akasaka, Kazumi Shinkai
  • Patent number: 10876444
    Abstract: Provided is an electric valve device which is capable of improving the accuracy of detecting whether there is a gas leakage from a blow-by gas passage and capable of detecting detachment of the electric valve device from a pipe of a fresh air passage. The electric valve device includes an inflow side pipe portion, an outflow side pipe portion, a barrier which partitions off the inflow side pipe portion from the outflow side pipe portion, a valve body which opens and closes an opening arranged on the barrier by moving in the axial direction, and a solenoid which drives the valve body. The inflow side pipe portion includes a bypass path which communicates with the outflow side pipe portion through a second opening separately from a passage which communicates with the outflow side pipe portion through a first opening used as the opening.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: December 29, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Dongming Chen, Tomohiko Nakanishi
  • Patent number: 10859171
    Abstract: A pressure control device includes a body having a groove-shaped flow path including a groove part and a widened part; a filter unit having a frame body including a through hole part that penetrates in a direction orthogonal to a central axis, a filter member in a planar plate shape disposed on one end side in a direction of an axis of the groove-shaped flow path with respect to the through hole part, and a seal member in a ring shape disposed along an outer-side circumferential edge part of the frame body when viewed from the through hole part; and a plate-shaped member being attached to the body to cover the groove-shaped flow path in a state where the filter unit is accommodated in the widened part. The frame body has a regulating part which regulates a disposition direction of the filter member with respect to the groove part.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: December 8, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventor: Masaru Miyagi
  • Patent number: 10855140
    Abstract: An electric actuator includes: a motor part, having a motor shaft that extends in an axial direction and is rotated in both directions; a deceleration mechanism, connected to the motor shaft; a circuit board, electrically connected to the motor part; an output part, having an output shaft to which rotation of the motor shaft is transmitted through the deceleration mechanism; a sensor magnet, attached to the motor shaft; and a motor part sensor, detecting a magnetic field of the sensor magnet and detecting rotation of the motor shaft. The motor part has a rotor magnet that is fixed to the motor shaft. The rotor magnet and the sensor magnet each have multiple magnetic poles in a circumferential direction around the motor shaft. The magnetic poles of the rotor magnet and the magnetic poles of the sensor magnet are disposed to be shifted from each other in the circumferential direction.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: December 1, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Shun Kato, Yutaka Uematsu, Tadayuki Hatsuda, Yuzo Akasaka
  • Patent number: 10816104
    Abstract: A solenoid valve includes a solenoid portion that moves a pin to one axial side and a nozzle portion including a valve body connected to one axial side of the pin. The valve body is driven by the pin and moves to one axial side to close a valve hole and urged by a spring and moves to the other axial side to open the valve hole. The spring is disposed in an annular space between a radial outer surface of a second valve body portion and a radial inner surface of a valve chamber, one axial side of the spring is in contact with a bottom surface of the valve chamber, the other axial side is in contact with a first valve body portion extending radially from an outer surface of the second valve body portion, and the spring urges the valve body toward the other axial side.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: October 27, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Dongming Chen, Tomohiko Nakanishi, Koichi Ishikawa, Yoshikatsu Goto
  • Patent number: 10819184
    Abstract: An electric actuator attached to a vehicle is provided and includes: a motor unit, a speed reducer, a circuit board, an output section, and a housing that accommodates the motor unit, the speed reducer, the circuit board and the output section. The housing has a motor case that opens at one side in an axial direction, and a circuit board case attached to one side of the motor case in the axial direction to close an opening of the motor case and accommodates the circuit board. The motor case has a motor case main body that accommodates the motor unit, and multiple attaching leg sections protruding from the motor case main body and fixed to the vehicle. The attaching leg sections protrude outward from the circuit board case when seen in the axial direction.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 27, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Yutaka Uematsu, Shun Kato, Ryunosuke Oikawa, Yuzo Akasaka, Kazumi Shinkai
  • Patent number: 10812001
    Abstract: A control device to control a motor includes a stator including a coil, a rotor including a permanent magnet, a detector that detects a rotational position of the rotor at every predetermined angle and outputs a position signal indicating the detected rotational position, and a controller that receives the position signal output by the detector and adjusts a duty ratio of a driving signal of the rotor by a pulse width modulation scheme based on the received position signal to control rotation of the rotor. The controller raises the duty ratio from a first duty ratio, starting from a point in time at which the position signal is received, and returns the raised duty ratio to the first duty ratio when a next position signal has been received.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: October 20, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Kei Sato, Yuichi Hibi, Yasuhiro Shirai
  • Patent number: 10801605
    Abstract: The disclosure provides a pressure control device that improves the workability in assembling a body and a filter unit. The pressure control device includes a body and a filter unit. The body has a flow path that includes a groove and a widened part. The widened part is connected to the groove, extends to a bottom of the groove, and has a width larger than a width of the groove. The filter unit is housed along a depth direction of the widened part to capture foreign matter mixed in a fluid that passes through the flow path. The filter unit includes a cylindrical frame and a flat plate-shaped filter member, wherein the frame includes a through hole part that penetrates in a direction orthogonal to a central axis, and the filter member is disposed to block the through hole part.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: October 13, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Takeshi Nakano, Yoshinori Yamaki, Tomohiro Yasuda, Weiming Chen, Kenta Kuramochi
  • Patent number: 10804771
    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.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 13, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Yutaka Uematsu, Jaehyun Kim, Toshiaki Nakamura, Shuichi Kinjo, Hiroshi Shirai
  • Patent number: 10801629
    Abstract: A solenoid device includes a yoke, a core, a shaft, a bobbin, a coil, a plunger, a lid, and a housing. A housing body part of the housing has a first opening; a cylindrical first inner wall part having a first step part extending toward the outer side in the radial direction; and a cylindrical second inner wall part having a second step part extending toward the outer side in the radial direction. A first cylindrical part has a first flange part. The outer diameter of the first flange part is larger than the inner diameter of the first inner wall part and smaller than the inner diameter of the second inner wall part. A circumferential end part of the first flange part contacts the second step part. The lid is non-magnetic, and a circumferential edge part is held between the first step part and the first flange part.
    Type: Grant
    Filed: June 16, 2019
    Date of Patent: October 13, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Kenta Kuramochi, Weiming Chen, Tomohiro Yasuda