252 patents
Page 3 of 13
Utility
Motor comprising coolant flow path
26 Jul 22
A motor includes: a housing that accommodates a stator that has a field coil and a rotor; an inverter that is provided in the housing; a voltage boosting circuit that has a reactor provided in the housing; and a coolant flow path that is provided at a position at which the coolant flow path overlaps with the inverter and the voltage boosting circuit in the housing in a diameter direction, and the inverter has a control board that controls a drive current or a drive voltage and a drive element that is provided on the side of the housing with respect to the control board and supplies power to the field coil in accordance with control from the control board.
Yoshihisa Okuhata, Tadayuki Hatsuda
Filed: 26 Dec 18
Utility
Electric pump device
26 Jul 22
An electric pump device is provided.
Yoshiyuki Kobayashi, Hitoshi Sakamoto, Tomohiro Sakata, Chisato Sekiguchi
Filed: 25 Sep 19
Utility
Motor unit
19 Jul 22
A motor unit includes a motor having a motor shaft disposed along a central axis which extends in an axial direction, and a cooling unit which cools the motor, wherein the cooling unit includes a first suction port configured to suction a first refrigerant which cools the motor, a first discharge port configured to discharge the first refrigerant suctioned from the first suction port, a second suction port configured to suction a second refrigerant which cools the first refrigerant by exchanging heat with the first refrigerant, and a second discharge port configured to discharge the second refrigerant suctioned from the second suction port.
Yoshihisa Okuhata
Filed: 25 Sep 19
Utility
Control device, control method, motor, and electric oil pump
5 Jul 22
A controller of a motor control device increases a voltage to be applied to a coil based on a control signal calculated from an estimated rotation speed, when the estimated rotation speed becomes equal to or lower than a predetermined rotation speed, increases the voltage to be applied to the coil based on a control signal calculated from an actual rotation speed, in a case where the actual rotation speed is lower than the predetermined rotation speed when the estimated rotation speed becomes higher than the predetermined rotation speed, and decreases the voltage to be applied to the coil based on a control signal calculated from the actual rotation speed, in a case where the actual rotation speed is higher than the predetermined rotation speed when the estimated rotation speed becomes higher than the predetermined rotation speed.
Kei Sato, Yuichi Hibi, Yasuhiro Shirai
Filed: 25 Sep 17
Utility
Blow-by Gas Leak Diagnostic Device
30 Jun 22
A blow-by gas leak diagnostic device includes a first PCV flow path, a second PCV flow path, a fresh air inlet, a pressure measurement unit, a first valve that opens and closes the first PCV flow path, a second valve that opens and closes the second PCV flow path, a third valve that opens and closes the fresh air inlet, a valve control unit, and a leak diagnosis unit.
Chikao KOMAKI, Ryota ITO
Filed: 23 Dec 21
Utility
Electromagnetic Valve
30 Jun 22
To provide an electromagnetic valve that can prevent damage due to wear of a valve element and a case of a solenoid, or occurrence of a striking sound when a valve is opened.
Tomohiko NAKANISHI, Hiroki SHIMIZU
Filed: 24 Dec 21
Utility
Electromagnetic Valve
30 Jun 22
To prevent a decrease in operating accuracy of a valve element by scraping off a deposit from the inside of a valve element housing portion and preventing sticking and accumulation of the deposit.
Tomohiko NAKANISHI, Hiroki SHIMIZU
Filed: 24 Dec 21
Utility
RepublicationElectromagnetic Valve
23 Jun 22
An electromagnetic valve includes a solenoid having a plunger; a flow path member including a fluid passage flow path having a first flow path, a second flow path, and a relay flow path which is disposed between the first flow path and the second flow path and which connects the first flow path and the second flow path, and a cylindrical space; a valve body movably disposed in the cylindrical space; and a spring which is disposed concentrically with the valve body on an outer peripheral side of the valve body in the cylindrical space and urges the valve body.
Tomohiko NAKANISHI, Dongming CHEN, Satoshi YABUSHITA
Filed: 16 Sep 20
Utility
Electronic board, in-vehicle electric motor and electric pump
14 Jun 22
An electronic board includes a board, and includes on the board: a power input part inputting power output from an in-vehicle power supply; a drive circuit driving a drive source; a controller controlling driving of the drive source performed by the drive circuit; and a drive command signal input part inputting a drive command signal transmitted from outside.
Yusaku Seki
Filed: 19 Aug 20
Utility
Electric oil pump
24 May 22
An electric oil pump includes a motor including a shaft, a pump driven with the shaft therebetween, and an inverter fixed to a rear side of the motor.
Shigehiro Kataoka, Yoshiyuki Kobayashi
Filed: 16 Aug 18
Utility
Electromagnetic valve
24 May 22
An electromagnetic valve includes a solenoid having a bobbin, a plunger and a coil; a flow path member having a first flow path, a second flow path, a relay flow path and a valve body housing; a valve body movably disposed in the valve body housing; and a spring disposed in the valve body housing and urging the valve body, wherein the valve body further includes a plurality of guide parts which are provided at different positions along the axial direction and which are guided on an inner wall surface of the valve body housing, and a taper part which is provided between the plurality of guide parts and whose outer diameter decreases toward the one side in the axial direction.
Tomohiko Nakanishi, Dongming Chen, Satoshi Yabushita
Filed: 11 Sep 20
Utility
Electric oil pump
17 May 22
In an electric oil pump, a motor includes a main body including a coil, bus bars electrically connected to lead wires of the coil, and a shaft including a portion on one side in an axial direction protruding from an end of the main body on the one side in the axial direction and connected to a pump, a control board includes a power supply input portion and a power supply output portion and is disposed in a posture in which any one of a first surface and a second surface of the control board lies in the axial direction, the power supply input portion is at an end portion of the control board on the other side in the axial direction, and bus bar terminals are disposed on one side of the main body in the axial direction.
Yoshiyuki Kobayashi, Shigehiro Kataoka
Filed: 14 Feb 20
Utility
Electromagnetic valve
17 May 22
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 part 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 between the first and the second flow paths.
Tomohiko Nakanishi, Takashi Takai
Filed: 11 Sep 20
Utility
Gearbox and motor driver
26 Apr 22
The disclosure reduces inconvenience for a driver at the time of operating parking locking, thereby curbing cost reduction and space saving becoming difficult due to additional installation of a drive source for parking locking.
Yoshihisa Okuhata
Filed: 25 Sep 19
Utility
Electric actuator
26 Apr 22
An electric actuator includes a motor which has a rotor having a motor shaft and a stator, a motor case for housing the motor, and a deceleration mechanism coupled to the motor shaft.
Shuichi Kinjo, Hiroshi Shirai, Yutaka Uematsu
Filed: 17 Jan 20
Utility
Vehicle cooling system
19 Apr 22
A vehicle cooling system includes a circulation flow path section which has a first flow path section and a second flow path section, and a solenoid valve which can switch between an open state in which the first flow path section and the second flow path section are connected and a closed state in which the first flow path section and the second flow path section are blocked.
Naoki Hiraoka, Tomoya Ozawa, Takashi Asai, Daisuke Murata, Keita Kobayashi, Tomohiro Yasuda, Kenro Takahashi
Filed: 21 Mar 19
Utility
Electromagnetic Valve
31 Mar 22
An electromagnetic valve includes: a solenoid having a plunger movably supported along an axial direction; a flow path member having a fluid passage flow path and a valve element housing portion; and a valve element disposed in the valve element housing portion and movable along the axial direction together with the plunger.
Tomohiko NAKANISHI, Junichi SAKASHITA
Filed: 28 Sep 21
Utility
Electromagnetic Valve
31 Mar 22
Provided is an electromagnetic valve capable of preventing damage due to wear while preventing an increase in weight of a valve element.
Tomohiko NAKANISHI, Takashi TAKAI
Filed: 28 Sep 21
Utility
Electromagnetic Valve
31 Mar 22
An electromagnetic valve includes a solenoid with a bobbin, a plunger, a yoke, and a coil, a flow path assembly including a first flow path, a second flow path, and a valve housing portion, and a valve that switches between an open state and a closed state between the first flow path and the second flow path.
Tomohiko NAKANISHI
Filed: 22 Sep 21
Utility
Control device of electric oil pump and electric oil pump
29 Mar 22
A control device is provided for controlling a rotation speed of an electric oil pump, including a motor and a pump mechanism connected to the motor, based on a command value input from a host device.
Yasuhiro Shirai, Koji Higuchi
Filed: 16 Sep 20