49 patents
Utility
Motor drive device
3 Oct 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
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
Design
Fan case
6 Dec 22
Yoshihiko Kato
Filed: 26 Nov 19
Utility
Motor
8 Nov 22
A motor case has a first case portion and a second case portion coupled to the first case portion.
Toru Kobayashi, Yoshifumi Kuwano
Filed: 26 Sep 19
Utility
Motor unit and drive device
1 Nov 22
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.
Shinya Kasai
Filed: 17 Jan 18
Utility
Motor including cover with through-hole
6 Sep 22
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: 18 Sep 18
Utility
Motor and carrier vehicle
30 Aug 22
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: 2 Jan 20
Utility
Motor having stator including respective laminations having protrusions of caulking dowel portions to secure said laminations
21 Jun 22
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: 20 Sep 19
Utility
Motor
8 Feb 22
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: 18 Sep 18
Utility
Motor
16 Nov 21
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: 20 Sep 19
Utility
Motor
9 Nov 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
Control apparatus and motor
5 Oct 21
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: 8 Nov 19
Utility
Motor
21 Sep 21
A motor includes a cover with first and second cup bodies.
Ryotaro Takahashi, Koji Mizukami
Filed: 18 Sep 18
Utility
Signal conversion device and motor drive system
14 Sep 21
A signal conversion device includes a first signal input terminal, a second signal input terminal, and a detector.
Charles Simson Halason Silitonga
Filed: 13 Mar 20
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
Design
Motor
10 Aug 21
Toru Kobayashi, Yoshifumi Kuwano
Filed: 12 Mar 19
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