Jtekt Corporation

Koyo Seiko Company, Ltd.

Naotake Kanda

Ken Matsubara

Shigeki Nagase

Nobuhiro Uchida

Kunihiro Oka

Ryouhei Hayama

Noboru Niguchi

Shingo Maeda

Tomoyasu Kada

Kenji Higashi

Minoru Sentoku

Motoo Nakai

Kouya Yoshida

Takeo Iino

Yoshihiro Oono

Hiroshi Yoshikawa

Ryosuke Yamaguchi

Keita Nimura

Koji Tachi

Taiki Takeuchi

Masayuki Ueno

Shiro Nakano

Katsutoshi Nishizaki

Yoshiyuki Shibata

Masaya Segawa

Shirou Nakano

Masayasu Higashi

Hirohide Inayama

Shuuji Kimura

Junichi Miyaki

Shinsuke Terada

Takaya Tanikawa

Shohei Ogi

Masaru Horikawa

Tomohiro Higashide

Katsutoshi Nisizaki

Toshimasa Soku

Provided is a control device and a motor device that can effectively suppress influence of vibration of a specific electronic component. A coil that is the specific electronic component is mounted on a circuit board. A connector portion has a base portion extending in a thickness direction of the circuit board and an extended portion extending from the base portion in a direction in which the circuit board extends. The extended portion of the connector portion has an annular portion, a support portion, and a pedestal portion. The pedestal portion serves as a portion to which the coil is bonded and fixed. With an adhesive applied to the pedestal portion, the pedestal portion bonds and fixes the coil thereto.

Control device and motor device

An injection molding device includes: a lower die that supports a rotor core; an intermediate die including a magnetizing mechanism; and an upper die including an injection die having a gate formed therein through which a molten bonded-magnet material supplied from a supply source is injected into a magnet insertion hole in the rotor core. The injection die has a cylindrical protruding portion at an end surface of which the gate is open. In the protruding portion, a magnetic-flux applying member containing ferromagnetic material is embedded with its side surface exposed at an outer peripheral surface of the protruding portion. The magnetizing mechanism is formed in an annular shape that can accommodate, inside its inner periphery, the rotor core and a distal end portion of the protruding portion by disposing yokes and permanent magnets alternately in the circumferential direction. Magnetic-path surfaces of the yokes radially face the side surface.

Bonded-magnet injection molding device and bonded-magnet injection molding method

An orientation magnetization device includes plural orientation magnetization yokes and plural orientation magnetization magnets, and molds field magnets while a rotor core is disposed in a magnetic circuit that is formed by assembling the orientation magnetization yokes and the orientation magnetization magnets into an annular shape. When the rotor core is disposed in the magnetic circuit, protruding portions are disposed at portions of the respective orientation magnetization yokes facing the rotor core. Auxiliary magnets are disposed in gaps between the respective orientation magnetization magnets and the rotor core, on opposite sides of each protruding portion in a circumferential direction of the orientation magnetization device. Each protruding portion and each auxiliary magnet extend in an axial direction of the orientation magnetization device, and are skewed with respect to the axial direction of the orientation magnetization device.

Orientation magnetization device and magnet-embedded rotor

A magnet-embedded rotor includes a cylindrical rotor core that rotates together with a rotating shaft; and permanent magnets embedded in the rotor core. The rotor core includes core members, and each core member includes a tubular portion into which the rotating shaft is inserted and projecting portions formed to project in a radial direction of the tubular portion from an outer periphery of the tubular portion and arranged apart from each other in a circumferential direction of the tubular portion. The rotor core is formed by assembling the core members such that the tubular portions are arranged on one straight line and the projecting portion of the core member and the projecting portion of the other core member are adjacent to each other in a circumferential direction of the rotor core. The permanent magnet is embedded in each projecting portion of each core member.

Magnet-embedded rotor, method for manufacturing magnet-embedded rotor, and orientation and magnetization device

A manufacturing device for a rotor core includes: a magnetization device that magnetizes magnet raw materials before being magnetized disposed in magnet insertion holes of the rotor core to turn the magnet raw materials before being magnetized into permanent magnets; and a detachment device that detaches the rotor core from the magnetization device. The detachment device also functions as a mounting device that mounts a jig around the rotor core when the rotor core is detached from the magnetization device.

Core manufacturing device

A pump housing, a fixing member and a holding member are assembled in the axis direction of an oil pump to fix a stator and a rotor of a brushless motor. The holding member is made of metal material and has a cylindrical shape that extends from its bottom portion toward one side in the axial direction. The fixing member is a cylindrical metal member. Stepped portions, extending in the circumferential direction, are formed in the outer periphery of the holding member and the inner periphery of the fixing member, and contact each other. The outer periphery of the holding member engages with the inner periphery of the fixing member. The outer periphery of the other end portion of the fixing member is fitted to the inner periphery of a flange portion projecting from the end face of the pump housing, which is adjacent to the brushless motor.

Electric motor and electric unit including the same

A stator is fixedly fastened at its outer periphery by a cylindrical and thin metal collar. One end of the collar is engaged with a pump housing. Multiple metal nuts are embedded in insulators fitted to stator cores through insert molding. The stator of a brushless motor is fixed by screwing bolts passed through the pump housing from a pump plate, to nuts embedded in the insulators.

Electric oil pump system

A motor vehicle steering system includes a knob for rotationally manipulating a steering member and a knob reaction force actuator for giving a reaction force in response to the rotation of the knob. The knob has a knob center and is supported by the steering member in a manner rotatable about the knob center. Holding the knob and manipulating the steering member causes the knob to rotate (spin) about the knob center as the steering member rotates. The knob reaction force actuator then gives an appropriate reaction force in response to the rotation (spinning) of the knob.

Motor vehicle steering system

The invention provides a motor including: a cylindrical motor case having a bottom that supports an outer circumferential surface of a stator core by an inner circumferential surface thereof; and a bracket that supports an output shaft side bearing and closes an opening of the motor case; wherein the stator core is press-fitted into the motor case from the opening such that a part of the stator core is exposed from the motor case, and a part of the stator core that is not press-fitted to the motor case forms a sliding fitting wall capable of providing a sliding fitting connection with the bracket.

Motor and electric power steering system

An electric power steering apparatus () comprises a control device (), which controls driving of an electric motor () based on the detection signals from a rotational position-detecting sensor (A), which detects the rotational position of the rotor () of the electric motor (), and a steering status detecting sensor (A). The control device () is housed in a housing () that is partitioned by a first housing (), which is at least a portion of the motor housing () for the electric motor (), and a second housing (A;B) that touches the first housing (). At least one of the rotational position-detecting sensor (A) and steering state detecting sensor (A) is connected to the control device () by means of only a signal wire () inside the first housing () or the second housing (A;B).

Vehicle steering apparatus and manufacturing method of same

Disclosed is a vehicle steering apparatus () equipped with a control device () which controls the actuation of an electric motor (). First and second housings (), which are in contact with each other, partition off an accommodation chamber () which contains the control device (). The first housing () is at least one part of the motor housing (). The first housing () includes a first interior wall surface () which partially partitions the accommodation chamber (). The second housing () includes a second interior wall surface () which partially partitions the accommodation chamber (). The first and the second interior wall surfaces () are opposite each other with respect to the axial direction (X) of a rotatable shaft () of an electric motor (). The second interior wall surface () includes the flat annular surface that surrounds a central axis (C) of the rotatable shaft () and an extension (C) of the central axis (C). The flat circular surface is orthogonal to the central axis (C) and the extension (C) of same.

Vehicle steering apparatus

It is an object of the present invention to provide an electric power steering apparatus to be small and compact. The control housingis installed between the motor housingof the electric motorand the gear housingThe ECU controlling the electric motoris accommodated in the accommodating room S formed within the control housingThe motor housingaccommodates the bus barconnected to the coilof the statorand the resolverdetecting the rotational position of the rotorThe resolveris installed within the bus bar mounting memberin inner side of radial direction. The partitionis mounted on the control housingand the fixing screwis engaged with the insulating memberby the way that the fixing screwis inserted into insulating memberfrom its bottom surface side.

Electric power steering apparatus

A brushless motor including a rotor which has ten permanent magnets each containing rare earth neodymium and provided around a rotor yoke and an outside diameter of 45 mm to 55 mm, and a stator which has a stator core having twelve slots and an outside diameter of 75 mm to 85 mm and whose magnetomotive force at maximum current is 700 AT or more. The stator core is configured such that a teeth width b is 0.14 times or more of the outside diameter of the rotor.

Brushless motor and electric power steering system

Power steering actuator

A brushless motor includes an annular stator and a rotor which has a plurality of permanent magnets alternately arranged in circumferential direction on the rotor to form poles and which is disposed within the stator to be rotatable with respect to the stator. The stator includes a cylindrical yoke and a plurality of teeth which are same in size one another, are connected to the yoke to extend therefrom toward the rotor, and are disposed at even interval in the circumferential direction. Width of each of the teeth in the circumferential direction is set to be greater than or at a vicinity of the value which is obtained by dividing outer diameter of the rotor by the number of the teeth and multiplying the result of dividing by &#x3c0;/2.

Growing community of inventors

Yamatokoriyama, Japan

Naotake Kanda