Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Yuichiro Sadanaga

Kenji Kondo

Koji Kuyama

Masao Kojima

Masahito Hidaka

Masanori Morita

Yasushi Kamada

Takeshi Sakata

A thermal insulation structure for an electronic device of the present invention is a thermal insulation structure which thermally insulates between an electronic circuit unit and a heat generator formed with another component. In the thermal insulation structure, a partition wall for separating each space and formed of resin having electric insulation properties is provided between the electronic circuit unit and the heat generator. Also, the partition wall is formed by integrating the resin and a thermal insulation material having thermal conductivity lower than thermal conductivity of air so that the resin includes the thermal insulation material. Further, the partition wall is formed by insert-molding the thermal insulation material with the resin. Further, the resin having the electric insulation properties is thermoplastic resin, and a thermal insulation raw material of the thermal insulation material is silica xerogel.

Thermal insulation structure for electronic device, motor provided with said thermal insulation structure, and method for forming thermal insulation member for electronic device

A motor of the present invention includes a stator in which a coil is wound around a stator core, and a magnetic circuit unit having a rotor. The rotor holds a rotor magnet disposed facing the stator core and a sensor magnet for position detection with a rotation shaft in the center. The motor further includes an electronic circuit unit having a circuit board on which circuit components including a magnetic detection element are mounted, and a partition disposed between the magnetic circuit unit and the electronic circuit unit for separating their spaces. The motor has an auxiliary sensor magnet disposed facing the sensor magnet with the partition and the magnetic detection element in between. The auxiliary sensor magnet is fixed and supported by a rotatable auxiliary shaft disposed independent from and coaxial with the rotation shaft.

Motor

A motor includes a shaft, a bearing for supporting the shaft rotatably, a rotor including a rotor frame to be mounted to the shaft along an axial direction of the shaft, a stator confronting an outer wall of the rotor via a space, and a washer disposed between the bearing and the rotor frame. On top of that, a step section forming a recess is provided to the rotor frame at a place where the washer confronts the rotor frame.

Motor and fan motor using the same motor

Growing community of inventors

Osaka, Japan

Yuichiro Sadanaga