The present invention discloses a sealed outer rotor motor structure comprising a shell type rotor, a self-aligned bearing housing, an oil seal, a concentric shaft, a stator and magnets. The self-aligned bearing housing is disposed in the shell type rotor. A through type bearing chamber concentric to the shell type rotor is disposed in the self-aligned bearing housing. A sealing ring groove located in the concentric shaft fixing hole is disposed on the concentric shaft. A bearing located within the through type bearing chamber is disposed on the concentric shaft. The oil seal is disposed on the self-aligned bearing housing to achieve sealing of a tail end of the shell type rotor. With the above-described mode, the rotational stability of the shell type rotor of the sealed outer rotor motor structure described by the present invention is high, improving the sealing effects during rotation of the shell type rotor.

A radial flux electrical machine is disclosed. The machine comprises a body of the stator having a body that defines a longitudinal axis a substantially cylindrical inner surface and an inner volume, and having a plurality of electromagnetic elements, each of which includes a stator core of ferromagnetic material and a winding of electrically conductive material located around at least part of the stator core of the electromagnetic element, the electromagnetic elements being arranged around the inner surface of the stator, and operable to induce a magnetic flux field in a radial direction in the inner volume of the stator, and a rotor located within the inner volume of the stator, and rotatable with respect to the stator. The inner surface of the body of the stator and the electromagnetic elements of the stator define cooperating engagement features of shape that serve to prevent relative rotation between the body of the stator and the electro-magnetic elements, and which allow relative longitudinal movement between the body of the stator and the electromagnetic elements.

A brushless motor and an electronic product having the brushless motor are provided. The brushless motor includes: a shaft, a stator part disposed on the periphery of the shaft, a rotor part disposed on the periphery of the stator part, a bearing part, and a housing. The housing includes: an upper plate part located on an axial side of the rotor part, a tubular part extending in an axial direction from a radial outer side of the upper plate part, and a lower plate part located on the other axial side of the rotor part. An accommodating part is formed around the shaft on a radial inner side of the upper plate part, and a sealing component is arranged between the accommodating part and the shaft.

The present invention relates to an in-wheel motor driving apparatus for reducing weight, improving Hall sensor assembly performance, and reducing a defect rate. According to one embodiment of the present invention, the weight of an in-wheel motor can be reduced by separating a suspension housing and a shaft and applying different materials thereto. Furthermore, the ease of assembling a Hall sensor can be improved, and the defect rate can be reduced.

Provided is an inverter built-in BLDC motor including: an inverter housing having one side coupled to a motor, an inside formed to be hollow, and the other side formed to be open, and having a PCB substrate provided in the hollow portion; a bearing mounted in a bearing mounting portion of the inverter housing and having a rotating shaft of a rotor of the motor rotatably coupled thereto; and a bearing cover coupled to a bearing mounting groove of the bearing mounting portion mounted with the bearing and formed to close an opening portion of the bearing mounting groove on an inner bottom surface of the inverter housing.

The present invention provides A motor comprising a housing; a stator disposed inside the housing; a rotor disposed inside the stator; a shaft coupled to the rotor; and a teeth support part come in contact with the teeth of the stator, wherein the teeth support part includes a guide is disposed between the teeth adjacent to each other, wherein a width of the guide in the circumferential direction corresponding to the length between the end surfaces of the adjacent teeth, wherein an outer upper surface of the guide and inner bottom surfaces of the adjacent teeth form a shape of an arc.

Hydraulic actuating system 21 for actuating a movable part, like a roof part or a wheel suspension. The actuating system comprises a pump unit 26. The pump unit comprises a piston pump 4 which has a pump rotor 46 and an electric motor 3 which has a motor rotor 31. The pump rotor 46 and motor rotor 31 are incorporated into a single common rotor 6. The rotor 6 is a one-piece item. The rotor 6 is positioned inside a pump chamber 264 around a pump stator 42 of the piston pump. The pump stator provides a full support to the common rotor 6. Advantageously, without a separate motor stator, the pump unit has a more compact configuration. Additionally, the pump unit has an improved dynamic performance which contributes to a silent and reliable operation at a high rotational speed.

A spindle motor according to an embodiment includes a base plate, a rotor magnet fixed to a rotor assembly positioned at one surface side of the base plate and a magnetic attraction plate fixed at the one surface side of the base plate so as to face the rotor magnet. An opposite area of the base plate facing the magnetic attraction plate includes a coated area covered by an epoxy electric discharge coating film, and the magnetic attraction plate is fixed to the opposite area via at least one of an epoxy adhesive and an acrylic adhesive.

The present invention provides a housing including a teeth support part formed to protrude from the inner bottom surface thereof so as to come into contact with the end surfaces of stator teeth and support the same, and thus provides an advantageous effect of preventing the generation of cogging torque, which can occur because of the non-uniform assembly of a stator.

A motor unit system is described. The motor unit system may include a housing with a brushless direct current motor and a motor controller contained within the same housing, where the motor controller comprises a printed circuit board, and an integrated circuit mounted on a component side of the printed circuit board, and a base plate at one end of the housing. The integrated circuit may be interposed between the base plate and the printed circuit board.