28 patents
Utility
Housing for Axial Fan and Axial Fan
28 Sep 23
A housing of an axial fan that allows air to flow in an axial direction includes a frame including, on an inner surface, an air channel through which air flows, stator vanes extending radially inward from the inner surface, a motor housing supported radially inward of the stator vanes, and a motor supported on one axial side of the motor housing.
Yoshihiko KATO
Filed: 21 Apr 23
Utility
Single-phase Brushless DC Motor
18 May 23
A single-phase brushless DC motor includes a rotor rotatable about a central axis, a stator including salient pole portions, a stator core including a slot between the salient pole portions, and a winding wound around the salient pole portions, the stator opposing the rotor with an air gap interposed therebetween, and a substrate fixed to the stator and including a driver to perform energization control of the winding.
Hideaki ITO, Taro TANNO
Filed: 9 Mar 21
Utility
Motor Drive Device
9 Mar 23
A motor drive device includes a first drive circuit to control an energization period of a first upper arm switch and a first lower arm switch connected to one end of a coil, a second drive circuit to control an energization period of a second upper arm switch and a second lower arm switch connected to another end of the coil, a current detection circuit to detect current flowing through the coil and output a current detection signal indicating a detection result of the current, a first protection circuit to determine whether overcurrent has occurred based on the current detection signal and output a first enable signal indicating a determination result to the first drive circuit, and a second protection circuit to determine whether overcurrent has occurred based on the current detection signal and output a second enable signal indicating a determination result to the second drive circuit.
Koji MIZUKAMI, Junya KANEKO, Katsuaki KIMURA
Filed: 10 Feb 21
Utility
Circuit Board and Motor
26 Aug 21
A circuit board includes a board, a land on the board, and an electronic component soldered to the land, the electronic component including a surface with a back surface electrode portion, the surface opposing the board, the land including an electrode land portion and a protruding land portion, the back surface electrode portion opposing the electrode land portion in a state in which the electronic component and the board are soldered, and the protruding land portion and the electrode land portion being integrated.
Tomoaki USHIKI, Harumasa MASUDA
Filed: 19 Feb 21
Utility
Motor
3 Jun 21
A motor includes a cover including a first cup body and a second cup body, each including a bottomed tubular shape.
Ryotaro TAKAHASHI, Koji MIZUKAMI
Filed: 18 Sep 18
Utility
Motor
25 Mar 21
A motor includes a cover with first and second cup bodies.
Ryotaro TAKAHASHI, Koji MIZUKAMI
Filed: 18 Sep 18
Utility
Control Circuit and Calibration System
30 Dec 20
A control device includes a control circuit that controls a target device, the control circuit including a controller that controls a calibration circuit to be connected to the control circuit, in which the controller calibrates the control circuit by controlling the calibration circuit when a predetermined condition is satisfied in a state where the control circuit is connected to the calibration circuit.
Masatomo Ishikawa
Filed: 24 Jun 20
Utility
Drive Control Device and Motor Device
2 Dec 20
A drive control device for a motor that is driven by an inverter, the drive control device including a control circuit.
Masatomo ISHIKAWA
Filed: 31 May 20
Utility
Motor
4 Nov 20
A motor includes a sheet-metal cover accommodating a stator and a substrate and a wiring assembly electrically connected to the substrate.
Ryotaro TAKAHASHI, Koji MIZUKAMI
Filed: 17 Sep 18
Utility
Signal Conversion Device and Motor Drive System
21 Oct 20
A signal conversion device includes a first signal input terminal, a second signal input terminal, and a detector.
Charles Simson Halason SILITONGA
Filed: 12 Mar 20
Utility
Motor and Carrier Vehicle
26 Aug 20
A motor includes a shaft extending along a center axis, and a first groove that is recessed in a radial direction and extends in an axial direction, on an outer side surface of the shaft.
Toshihiro OKABE, Mariko TANAKA, Satoshi TAGUCHI, Hironobu YOSHIKAWA
Filed: 1 Jan 20
Utility
Motor
17 Jun 20
A motor includes binding pins around which a coil lead wire is wound, and an end on one side in an axial direction of the binding pin and the coil lead wire are fixed to a surface facing one side in the axial direction of a substrate.
Ryotaro TAKAHASHI, Koji MIZUKAMI
Filed: 17 Sep 18
Utility
Control Apparatus and Motor
17 Jun 20
A control apparatus includes a controller that controls a motor, a first transmission channel connected to a first power-supply terminal of an alternating-current source that supplies an alternating-current voltage, a second transmission channel connected to a second power-supply terminal of the alternating-current source, and a third transmission channel connected to each of the first transmission channel and the second transmission channel.
Keiichi ABE, Koji HARADA, Huafei CAI, Masashi NAGUMO, Takayuki SUEMATSU
Filed: 7 Nov 19
Utility
Motor
20 May 20
A motor includes a cover including a first cup body and a second cup body, each with a bottomed tubular shape.
Ryotaro TAKAHASHI, Koji MIZUKAMI
Filed: 17 Sep 18
Utility
Motor
1 Apr 20
A motor case has a first case portion and a second case portion coupled to the first case portion.
Toru KOBAYASHI, Yoshifumi KUWANO
Filed: 25 Sep 19
Utility
Motor
1 Apr 20
A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction.
Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
Filed: 19 Sep 19
Utility
Motor
1 Apr 20
A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction.
Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
Filed: 19 Sep 19
Utility
Motor
1 Apr 20
A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction.
Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
Filed: 19 Sep 19
Utility
Motor Unit and Drive Device
20 Nov 19
A motor assembly includes an output shaft disposed along a central axis extending in one direction, a motor that rotates the output shaft, a circuit board electrically connected to the motor, a power supply that supplies power to the motor and the circuit board, and a case having a tubular shape that extends in an axial direction and accommodates the motor, the circuit board, and the power supply A substrate surface of the circuit board and the power supply are disposed to face each other in a predetermined direction that is orthogonal or substantially orthogonal to the axial direction.
Shinya KASAI
Filed: 16 Jan 18
Utility
Fan Unit
16 Oct 19
A fan main body includes a blade that rotates and a frame that rotatably supports the blade, and a casing including a main body with a housing recess in which the fan main body is to be housed, and a snap-fit portion to fix the frame in the housing recess.
Masakazu SHIMAMOTO
Filed: 6 Feb 18