Matsushita Electric Industrial Co., Ltd.

Yoichi Shukuri

Yoshimitsu Aizono

Kyo Niwatsukino

Shigeru Narakino

A brushless DC motor includes a substrate fixed to the center of a stator core. The substrate includes a central substrate portion and an arm substrate portion extending from the central substrate to a salient pole. The arm substrate is accommodated between coils. A driver IC is mounted on the central substrate portion, and a magnetic pole position sensor is mounted on the arm substrate portion. This structure provides a thin brushless DC motor which assures good motor performance and stable noise and vibration levels, improves motor efficiency, and reduces the number of components and assembling steps.

Brushless DC motor, pump, and electronic apparatus

An ultra-thin pump of the present invention includes a ring-shaped impeller including many vanes arranged along its outer region and a rotor magnet at its inner region, a motor stator provided in a space encircled by an inner peripheral surface of the rotor magnet of the impeller, and a pump casing that includes a suction port, a discharge port and a cylinder disposed between the motor stator and the rotor magnet and houses the impeller. The impeller is rotatably supported by the cylinder. A cooling system of the present invention includes a cooling device for cooling a heat-producing device by heat exchange using coolant, a radiator for removing heat from the coolant, and the ultra-thin pump for circulating the coolant. The ultra-thin pump is simple in structure, operates efficiently and can be manufactured at low cost, and the cooling system is thin in structure and performs efficient cooling.

Growing community of inventors

Fukuoka, Japan

Yoichi Shukuri