Minebea Mitsumi Inc.

Minebea Company, Limited

Makoto Otsuka

Jun Ohmura

Yutaka Kamogi

Koji Kebukawa

Provided is an easily assembled motor. In series coils in a first coil group and a third coil group, a direction of forming a plurality of coils is a first direction (A), and in a series coil in a second coil group, a direction of forming a plurality of coils is a second direction (B). Winding end parts of series coils in the first coil group and winding start parts of series coils in the second coil group are connected, winding end parts of series coils in the third coil group and winding start parts of the series coils in the first coil group are connected, and winding end parts of the series coils in the second coil group and winding end parts of the series coils in the third coil group are connected.

Dual stators with interleaved teeth for a radial electric machine

A motor of the present invention includes a rotation shaft, blades provided at the rotation shaft, a holder having tubular members, a rotor, and a stator opposing the rotor in a radial direction of the rotor. The stator is fixed to the tubular members, the stator includes a magnetic body, a coil and a resin member, a part of the resin member enters into between windings of the coil, another part of the resin member forms a side surface of the stator, and another part of the resin member opposes the blades in an axial direction of the rotation shaft.

Motor

A motorincludes a stator having an annular shape; and a rotor including a rotor magnet surrounding the stator, wherein an outer diameter of the rotor is in a range from 80 mm to 100 mm, the stator includes a yoke having an annular shape, a plurality of magnetic pole portions, a plurality of coupling portions connecting the yoke and the plurality of magnetic pole portions to each other, and a plurality of coils each wound around each of the plurality of coupling portions, the rotor magnet is continuously formed of a resin in an annular shape, the number of magnet poles of the rotor magnet is 14×N (pieces) (where N is a positive integer), the number of the plurality of magnetic pole portions is 12×N (pieces), and each of the plurality of magnetic pole portions extends in a circumferential direction.

A driving apparatus according to an embodiment includes an arm, an operation target, and a brake unit. The arm has one end supported by a support mechanism, and includes an electric driving source. The operation target is attached to the other end of the arm, the other end being an end on the opposite side of the one end, and is enabled to be pivoted by the driving source about one rotational axis intersecting with a direction from the one end to the other end. The brake unit secures immobility of a target gear that is a gear disposed in the arm, and that is a gear being rotated as the operation target is pivoted, when the power supply to the driving source stops.

Motor with optimized dimensional relationships

A motor includes: a motor shaft including a press-fitting surface; and a first annular projection group and a second annular projection group formed in the press-fitting surface of the motor shaft. The first annular projection group and the second annular projection group are separated from each other in an axial direction, a distance between an adjacent two of annular projections in the first annular projection group and a distance between an adjacent two of annular projections in the second annular projection group are smaller than a distance between the first annular projection group and the second annular projection group in the axial direction.

Motor shaft, motor and motor assembly

A motor includes a stator including a terminal and a casing that houses the stator, in which the casing includes a casing body with high thermal conductivity that includes an opening in which the terminal is disposed and houses the stator and a casing block disposed in the opening and with an insulating property and high thermal conductivity, and the casing block includes a housing part that houses a distal end portion of the terminal.

Motor and method for manufacturing motor

A motor shaft is configured to be press-fitted into a hole formed in a press-fitted component from a front end side in an axial direction. The motor shaft includes: a shaft body; a first annular projection portion that protrudes outwardly in a radial direction of the shaft body and is brought into contact with an inner circumferential surface of the hole the first annular projection portion being positioned at a first position; and a second annular projection portion that protrudes outwardly in the radial direction of the shaft body and is brought into contact with the inner circumferential surface of the hole, the second annular projection portion being positioned at a second position that is shifted from the first position toward a rear end side in the axial direction of the shaft body.

Growing community of inventors

Kakegawa, Japan

Makoto Otsuka