Mitsuba Corporation

Masaki Hayata

Yoshichika Kawashima

Ryo Ohori

Naoki Shioda

Teppei Tokizaki

Motoaki Kobayashi

Atsushi Kawasaki

Satoshi Tamura

Yosuke Harigai

Tomoyasu Sugiyama

Takashi Yatsuda

Masakazu Saito

Provided are a winding device and a motor. A nozzle that feeds out a coil has: a nozzle hole from which the coil is fed out; an inner-diameter round chamfered part formed on an opening edge of a tip of the nozzle; an outer-diameter round chamfered part formed on the outer peripheral edge of the tip of the nozzle. When the wire diameter of the coil is defined as Φc, the inner diameter of the nozzle hole is defined as Φin, the radius of curvature of the inner-diameter round chamfered part is defined as Rin, and the radius of curvature of the outer-diameter round chamfered part is defined as Rout, they satisfy 1.2Φc≤Φin≤1.4Φc, 0.5Φc≤Rin≤Φc, and 0.25Φc≤Rout≤0.5Φc.

Winding device and motor

A brushless motor includes a motor part and a gear part. The motor part includes: a rotating shaft, having a first gear; a rotor, having a bottom wall and a side wall, the bottom wall being fixed to the rotating shaft; magnets, fixed to the side wall and arranged side by side in a circumferential direction of the rotor; a stator, provided between the rotating shaft and the magnets in a radial direction of the rotor and wound with a coil; and a motor housing, rotatably supporting the rotating shaft, and accommodating the rotor and the stator. The gear part includes: a second gear, meshed with the first gear; an output shaft, having an output part, having a base end side thereof fixed to the second gear, and parallel to the rotating shaft; and a gear housing, rotatably supporting the output shaft, and accommodating the second gear.

Brushless motor

A motor control device for controlling a brushless motor including a rotor and a three-phase armature coil includes: a position detection unit which detects the rotational position of the rotor; a control unit which outputs, in a first control mode or a second control mode, a first drive signal or a second drive signal to an inverter at a current-supply timing based on the rotational position of the rotor; and the inverter which outputs a first current-supply signal or a second current-supply signal to the three-phase armature coil when the first drive signal or the second drive signal is input. For any two of the three phases, a duty value when the duty of the applied voltages is the same is larger in the second control mode than in the first control mode.

Motor control device, motor control method, and motor unit

A speed reducer-attached motor includes a rotation shaft on which a worm gear is provided and which is supported rotatably around a central axis via a plurality of bearings, a motor part that is driven to be rotated around the rotation shaft as a central axis, a speed reducer part that includes at least one or more gears which include a worm wheel that is engaged with the worm gear, and a casing on which a shaft accommodation groove that accommodates the rotation shaft, a bearing accommodation recess part that accommodates the bearing, and an accommodation recess part that accommodates the speed reducer part are formed, wherein the shaft accommodation groove, the bearing accommodation recess part, and the accommodation recess part open at a top surface portion side of the casing.

Speed reducer-attached motor and speed reducer-attached motor assembly method

Growing community of inventors

Gunma, Japan

Masaki Hayata