Abstract: A rotor includes a rotor iron core, a rotor shaft, and a fastening plate. The rotor iron core includes a first and a second end, and extends along an axial direction. The first fastening plate is fastened to at least the first or second end, and includes a through hole and a first runner. An inlet of the first runner communicates with the through hole. An outlet of the first runner is on a surface of a side of the fastening plate. The rotor shaft includes a second runner and a third runner in the rotor shaft. An inlet of the second runner is at one end of the at least one end of the rotor shaft. An outlet of the second runner communicates with an inlet of the third runner. An outlet of the third runner communicates with the inlet of the first runner.

Abstract: In a rotating electric machine, a rotor core includes; a gap surface; a plurality of magnet insertion holes; a slit which is formed in a core region between the gap surface and, among the plurality of magnet insertion holes, a magnet insertion hole into which a permanent magnet forming one magnetic pole is inserted, and divides the core region into a plurality of divided core regions in the circumferential direction; and a cutout formed by denting the gap surface of a divided core region, wherein a shortest distance between a stator core imaginary gap surface which is in contact with distal end surfaces of the plurality of teeth, and a bottom point of the cutout is longer than a shortest distance between the stator core imaginary gap surface and each of two intersections between the cutout and the gap surface.

Abstract: The present invention relates to a motor comprising: a motor housing; a stator which is provided in the motor housing and has a coil; a rotor installed in the stator to be rotatable about a rotary shaft; and a spray hole which is formed in the circumferential surface of the rotor by passing through the circumferential surface in a radial direction and which sprays a cooling fluid in the motor housing onto the coil according to the rotation of the rotor. Therefore, cooling by oil convection can be accelerated while minimizing resistance due to the oil.

Abstract: A rotor of an electric machine includes a rotor core defining a magnet channel extending axially between opposing ends of the rotor core. A permanent magnet is disposed in the channel and has opposing ends and opposing major sides. The magnet includes a central piece of anisotropic magnetic material having a first magnetically easy crystallographic axis, and a corner piece of anisotropic magnetic material joined to the central piece and having a second magnetically easy crystallographic axis that is oblique to the first easy axis.

Abstract: An embodiment relates to a rotor and a motor comprising same, the rotor comprising: a rotor core; and a plurality of first magnets and second magnets arranged along the outer circumferential surface of the rotor core, wherein each of the second magnets is disposed between the first magnets, and the outer circumferential surface of each of the first magnets has a curvature greater than that of the outer circumferential surface of the second magnet. Therefore, the motor can reduce cogging torque by using the first magnet and the second magnet having different shapes, and thus can improve the quality of the motor.

Abstract: An axle assembly having an electric motor module. The electric motor module may include a rotor, a rotor shaft, a stator, a coolant jacket, an end plate, and a motor housing. The motor housing may encircle a portion of the coolant jacket. The end plate may be disposed outside and may not be received in the motor housing.

Abstract: A motor includes a rotor rotatable about a rotation axis, and a stator surrounding the rotor so as to form an air gap between the stator and the rotor. The rotor has a rotor core having a magnet insertion hole and a rare earth magnet provided in the magnet insertion hole. The rotor core has a plurality of slits on an outer side of the magnet insertion hole in a radial direction about the rotation axis. Each of the plurality of slits has a length in the radial direction which is longer than a length in a circumferential direction about the rotation axis. The plurality of slits have a uniform minimum distance to the magnet insertion hole. When the minimum distance is expressed as T and the air gap is expressed as G, 2.75?T/G?5.25 is satisfied.

Abstract: A blender system is shown and described herein. In one aspect, the blender system includes a base with an interior and an exterior formed by a housing. The housing may include an air inlet port and an exhaust port. The interior of the base includes a motor bore forming an air pathway connecting the air inlet port to the exhaust port. The motor bore also includes an entry aperture fluidly connecting the motor bore to the air inlet port. The entry aperture is indirectly in line with the air inlet port. The exit aperture fluidly connects the motor bore to the exhaust port, and the exit aperture is indirectly in line with the exhaust port.

Abstract: A rotor for a motor includes: a rotor core including accommodation holes penetrating the rotor core in an axial direction; permanent magnets respectively accommodated in the accommodation holes; an endplate configured to cover an end of the rotor core; and a soft magnetic core disposed on the endplate.

Abstract: A housing of a drive device includes a tubular portion, a side plate portion, a plate portion, and a peripheral wall portion. The tubular portion extends in a first direction and accommodates a motor. The side plate portion has a plate shape intersecting the first direction, and is at one end portion of the tubular portion in the first direction. The plate portion expands from the tubular portion along one of the first direction and a second direction perpendicular to the first direction. The peripheral wall portion surrounds an inverter accommodation portion that accommodates inverter when viewed from a third direction perpendicular to the first direction and the second direction, and is connected to the plate portion. Each of a pump and an oil cooler is at any of one end portion of the peripheral wall portion in the second direction, another end portion of the plate portion in the third direction, and another end portion of the side plate portion in the first direction.

Abstract: An electric power steering device includes a motor housing of an electric motor. An annular seal accommodating portion is formed around an external terminal forming part of a connector assembly, and filled with a liquid sealing agent. A fixing member fixes the connector assembly to a fixing part of an end face part of the motor housing. A liquid sealing agent guiding passage is formed with the annular seal accommodating portion, and allows the liquid sealing agent to flow to the fixing member. A metal cover includes: a bottom part including: an exposure hole through which the external terminal forming part is exposed to outside; and an annular reinforcing projecting portion formed at an edge of the exposure hole, and accommodated in the annular seal accommodating portion; and a lateral peripheral part angled from the bottom part, and forming an opening for fixation to the end face part.

Abstract: A laminated core includes a plurality of electrical steel sheets which are stacked on each other and of each of which both surfaces are coated with an insulation coating; and an adhesion part which is provided between the electrical steel sheets adjacent in the stacking direction and adheres the electrical steel sheets to each other, wherein an adhesive for forming the adhesion part includes a first phase and a second phase, wherein the adhesion part has a sea-island structure of the first phase which is a sea structure portion and the second phase which is an island structure portion, wherein the first phase contains an epoxy resin, an acrylic resin, and a curing agent, wherein the first phase has an SP value of 8.5 to 10.7 (cal/cm3)1/2, wherein the second phase contains an elastomer, and wherein the second phase has an SP value of 7.5 to 8.4 (cal/cm3)1/2.

Abstract: The present disclosure relates to a rotor assembly and a consequent-pole motor, and the rotor assembly includes an iron core and a plurality of permanent magnets. The iron core is provided with a plurality of mounting grooves for accommodating permanent magnets distributed along a circumferential direction of the iron core. One side of each of the mounting grooves adjacent to an end of an outer edge of the iron core is provided with a second air slot which is located in a consequent-pole region. The second air slot is communicated with the mounting groove. The second air slot can, on one hand, prevent magnetic lines emitted from the permanent magnet from short-circuiting through an end of the permanent magnet, so as to decrease the magnetic flux leakage, and on the other hand, adjust an orientation of the magnetic lines in the consequent-pole region, so as to weaken torque fluctuation.

Abstract: In a rotor in which magnet slots arranged in a V shape so as to open toward the outer circumferential side and having permanent magnets inserted therein are formed in a two-layer structure in a radial direction, the magnet slots in each layer are composed of a pair of slots formed between a center bridge located at the center and respective ones of two radially-outer bridges located between the outer surface of the rotor and the respective slots. Of magnetic fluxes generated from the permanent magnets, magnetic fluxes excluding magnetic fluxes for magnetically saturating the bridges are defined as effective magnetic fluxes. The rotor is configured such that the effective magnetic flux generated from the permanent magnet on the radially outer side is not greater than half the effective magnetic flux generated from the permanent magnet on the radially inner side.

Abstract: A linear actuator includes a piston, a transmitter, and a receiver. The piston is configured to linearly extend and retract (such as within a cover tube). The transmitter is configured to generate a transmit electromagnetic waveform and direct the transmit electromagnetic waveform along a length of the piston. The receiver is configured to receive a return electromagnetic waveform that includes the transmit electromagnetic waveform after travelling to an extended end of the piston and returning to the receiver and determine a position of the piston based on a phase difference between the transmit electromagnetic waveform and the return electromagnetic waveform.

Abstract: A rotor sheet includes a sheet body. The sheet body includes a plurality of magnetic poles symmetrically distributed in a circumferential direction of the sheet body. Each magnetic pole includes one first magnet groove symmetrical about a D-axis center line, two second magnet grooves symmetrically distributed in an approximate V shape about the D-axis center line, two first air grooves symmetrically distributed on the outer sides of two ends of the first magnet groove, and one second air groove positioned between the ends of the two second magnet grooves near the side of the center of the sheet body. First magnetic bridges are formed between the first air grooves and an excircle of the sheet body, and second magnetic bridges are formed between the first magnet groove and the first air grooves; and third magnetic bridges are formed between the excircle of the sheet body.

Abstract: A system having a damper with six or more indentations on alternating sides of the damper, where each indentation is open to an outer circumferential surface of the damper and extends over halfway through a width of the damper, and six or more slots, each slot open to an undulating inner circumferential surface of the damper and extending through the width of the damper.

Abstract: An electric motor and winding method that improves its characteristics of torque and speed. An improved electric motor that provides higher power density and safety features by a novel winding architecture. Since the new winding architecture does not affect the measures, design or materials of the electric motor there is no need for any special manufacturing process or extra cost. Therefore the improved electric motors are smaller, lighter and cheaper than the same power size conventional electric motors as in other prior arts. The improved electric motor provides redundancy features against failure.

Abstract: According to one embodiment, a rotor core satisfies a relationship: W2/W1?(A1+A2)/A1. Where, A1 represents an area of a region defined by a polar central axis, an outer circumferential surface of the rotor core and a first imaginary linear line extending on an outer circumferential-side long edge of an embedding hole, A2 represents an area of a region defined by the polar central axis, a q-axis, the outer circumferential surface of the rotor core, a second imaginary linear line extending on an inner circumferential-side long edge of the embedding hole, a third imaginary linear line extending on a first edge of the cavity hole, W1 represents a half-width of a first bridge portion, and W2 represents a half-width of the second bridge portion.

Abstract: An electric machine has a stator and a rotor arranged on a hollow shaft and able to turn relative to the stator about an axis of rotation, wherein the hollow shaft comprises, in a shaft casing, at least one shaft exit opening for coolant supplied to a shaft interior space of the hollow shaft. A cover element is arranged next to the rotor on the hollow shaft, in which is formed a fluid duct comprising a fluid duct inlet and a fluid duct outlet, wherein the fluid duct inlet overlaps with the shaft exit opening and the fluid duct outlet overlaps with a coolant duct inlet of a coolant duct reaching through the rotor in the axial direction relative to the axis of rotation, having a coolant duct outlet on its side opposite the coolant duct inlet, through which the coolant emerges from the rotor.