Abstract: A small-sized motor apparatus for a vehicle, includes: a frame; a drive shaft mounted to the frame, a driven shaft to rotate dependently on the drive shaft, the driven shaft including a second worm gear; a cover coupled to the frame; a plate-shaped washer member; and a gap spring member preventing an axial movement of the driven shaft, the gap spring member being assembled in a radial direction of the driven shaft and installed such that one side of the gap spring member is contact-supported by the plate-shaped washer member and the other side of the gap spring member is supported by the frame, wherein the frame includes a slide groove that accommodates both ends of the gap spring member and the plate-shaped washer member and restricts the gap spring member from moving in an axial direction of the driven shaft.

Abstract: The present invention provides a motor including a stator, a rotor disposed inside the stator, a shaft coupled to the rotor, a busbar disposed above the stator, and a wire assembly connected to the busbar, wherein the wire assembly includes a grommet, a cable of which a part is disposed inside the grommet, and a first terminal connected to the cable. The first terminal includes a connecting end portion, the grommet includes a body having the cable therein, and an extension extending from the body and having the first terminal therein, the extension includes an insert hole formed to pass through from a lower surface of the extension to an upper surface of the extension, and the connecting end portion is disposed inside the insert hole.

Abstract: An electric motor assembly (10), in particular for driving a vehicle, comprises an electric motor (12), a magnetic sensor (46) and a shield (14), the electric motor (12) being equipped with a stator (16), a rotor (18) and at least one magnet (28) which is connected to the rotor (18) for conjoint rotation therewith and generates a measuring magnetic field (MM). The magnetic sensor (46) is located in the measuring magnetic field (MM) and is connected to the shield (14), and the shield (14) has high magnetic permeability and is closed in the area of the magnetic sensor (46).

Abstract: A three-dimensional magnet structure (6) made up of a plurality of individual magnets (4), the magnet structure (6) having a thickness that forms its smallest dimension, the magnet structure (6) incorporating at least one mesh (5a) exhibiting mesh cells each one delimiting a housing (5) for a respective individual magnet (4), each housing (5) having internal dimensions just large enough to allow an individual magnet (4) to be inserted into it, the mesh cells being made from a fibre-reinforced insulating material, characterized in that a space is left between the housing (5) and the individual magnet (4), which space is filled with a fibre-reinforced resin, the magnet structure (6) comprising a non-conducting composite layer coating the individual magnets (4) and the mesh structure (5a).

Abstract: There is provided a system comprising a brushless DC (“BLDC”) electric motor for a propeller engine and a motor controller. The motor comprises a rotor including one or more permanent magnets and one or more alternator windings, and a stator including one or more stator windings. The controller is configured to apply a first, transient DC voltage to the windings of the stator, wherein the first, transient DC voltage is configured to provide commutation switching for the windings of the stator so as to generate a torque on the rotor. The controller is further configured to apply a second, static DC voltage to the windings of the stator, wherein the second, static DC voltage is configured to induce an electric current in the alternator windings so as to generate an AC voltage in the alternator windings.

Abstract: A compact drive unit is predominantly intended for traction vehicles, especially for rail vehicles. This invention allows significant reduction of volume and weight of drive units. The drive unit comprises high-speed electrical motor (1) with passive cooling, which is supplied by power electronics converter (2), whose rotor is supported by bearings (3) along with pinion gear (4) of the input spur/helical gear (5). The output shaft (6) of the gear (5) is a part of the next following gear (7). Output shaft of this gear (7) can be connected either directly or by using the coupling (12) to the axle (8) of the traction vehicle, or to the wheel (9). Alternatively, in case the higher transmission ratio is required, it can be connected to another gears (10), where the output shaft of the gears (10) is connected to the wheel (9), or to the axle (8) of the traction vehicle directly or by using the coupling (12). The drive unit can be equipped with brake (13).

Abstract: An electric actuator according to an aspect of the disclosure includes: a motor including a rotor having a motor shaft extending along a central axis and a stator facing the rotor in a radial direction; and a deceleration mechanism which is disposed on a side of the stator in an axial direction and connected to the motor shaft. The motor shaft includes an eccentric shaft part with an eccentric axis, which is eccentric with respect to the central axis, as a center, and the eccentric shaft part is connected with the deceleration mechanism. The eccentric shaft part includes a balance concave part disposed on an end part of the eccentric shaft part in a predetermined direction which is in a radial direction from the central axis toward the eccentric axis. The balance concave part is recessed from an outer surface of the eccentric shaft part.

Abstract: A speed reduction apparatus includes a motor and a speed reduction assembly. The motor includes a first rotating shaft and a second rotating shaft a second rotator and a first rotator, a stator, a first motor housing, a second motor, and a first bearing and a second bearing at a radial outer side of the first rotating shaft, the first bearing and the second bearing being axially located at the same side of the first rotator facing the first motor housing. The speed reduction assembly includes a first gear, third gears engaging with the first gear, and a second gear, an output shaft, the third gears turning the second gear to rotate, and the second gear driving the output shaft, and a bracket between the output shaft and the first rotating shaft, the first gear, the second gear and the third gears being located at an axial outer side of the first motor housing, and at least one of the first gear, the second gear and the third gears being located radial outer sides of the first bearing and the second bearing.

Abstract: An apparatus including a first device configured to support at least one substrate thereon; and a first transport having the device connected thereto. The transport is configured to carry the device. The transport includes a plurality of supports which are movable relative to one another along a linear path; at least one magnetic bearing which at least partially couples the supports to one another. A first one of the magnetic bearings includes a first permanent magnet and a second magnet. The first permanent magnet is connected to a first one of the supports. A magnetic field adjuster is connected to the first support which is configured to move the first permanent magnet and/or vary influence of a magnetic field of the first permanent magnet relative to the second magnet.

Abstract: A motor coil substrate includes a flexible substrate, and multiple coils formed on the flexible substrate such that each of the coils has a spiral shape. The flexible substrate has multiple folding lines formed and the multiple coils positioned such that the flexible substrate is folded at the folding lines and wound around a magnet and that an m-th coil and an (m+1)-th coil of the coils partially overlap one another when folded at the folding lines.

Abstract: The present invention relates to an electromagnetic assembly of polyphase structure, said assembly including: a yoke comprising an electromagnetic body; a plurality of spaced-apart blocks that protrude with respect to one of the carrier faces of the yoke and that are arranged, consecutively, along the periphery of the carrier face of the yoke; and at least one winding that is associated with the blocks, wherein there is only one yoke, the plurality of blocks is arranged in at least two groups of blocks (A, B, C) in which two consecutive blocks of a given group of blocks (A, B, C) are spaced apart by an inter-block distance (E), and each group of blocks (A, B, C) is separated from the adjacent group of blocks (A, B, C) by an inter-group distance (D) that is different from the inter-block distance (E).

Abstract: A generator with reduced reverse torque which may be used as a singular, point of use, compact electric generator that produces power with high efficiency and very low reverse torque. The generator comprising a stator having slots and stator coils and a series of slot rotors placed in relation to the stator coils such that minimal destructive interaction is caused between magnetic fields of each rotor and induced magnetic fields of the stator when the power generator is connected to an electric load with at least a portion of that power being sent to a storage device where a portion of the stored power is provided to excitation circuitry utilized to re-excite a motor to drive the slot rotors.

Abstract: An electric machine system described herein comprises a first electric machine rotor, a first gear and a second gear. The first gear is connected to the first electric machine rotor and to a first input/output shaft. The second gear is connected to the first electric machine rotor and to a second input/output shaft. The first electric machine rotor is disposed between the first gear and the second gear.

Abstract: An electric working machine according to one aspect of the present disclosure includes a terminal block electrically connected to a battery pack. The terminal block includes a positive electrode connecting terminal and a negative electrode connecting terminal. The positive electrode connecting terminal includes a plate-shaped positive electrode side connection plate portion that comes in contact with a positive electrode terminal of the battery pack, and the negative electrode connecting terminal includes a plate-shaped negative electrode side connection plate portion that comes in contact with a negative electrode terminal of the battery pack. At least one of the positive electrode side connection plate portion and the negative electrode side connection plate portion is provided with a heat radiation plate portion in a thermal conductive manner.

Abstract: A method and device for producing a radially anisotropic multipolar solid magnet adapted to different waveform widths are provided. A mold core is removed from a mold for molding the magnet, and outer oriented poles, the number of which is the same as that of poles of the radially anisotropic multipolar solid cylindrical magnet, are arranged outside the mold. The width of a front end of a single outer oriented pole is determined according to the desired width of a single waveform of the radially anisotropic multipolar solid cylindrical magnet after being magnetized. The sum L of widths or arc lengths of front ends of all the outer oriented poles is less than 0.9?D, particularly less than 0.7?D, where D is the outer diameter of a mold sleeve. Magnetic particles in a mold cavity are rotated with the mold only during magnetization.

Abstract: A permanent magnet comprises crystal grains each including a main phase. An average size of the crystal grains is 1.0 ?m or less, and a degree of orientation of easy magnetization axes of the crystal grains to an easy magnetization axis of the magnet is 15% or more and 90% or less. A recoil magnetic permeability is 1.13 or more, a residual magnetization is 0.8 T or more and less than 1.16 T, and an intrinsic coercive force is 850 kA/m or more.

Abstract: An electric actuator (1) includes: a motor part (A); a motion conversion mechanism part (B); and a housing (2) configured to house the motor part (A) and the motion conversion mechanism part (B). The motion conversion mechanism part (B) includes: a screw shaft (33); and a nut member (32) rotatably fitted to an outer periphery of the screw shaft. The screw shaft (33) performs a linear motion in an axial direction along with a rotation of the nut member (32). The housing (2) includes a plurality of members coupled to one another in the axial direction. A terminal part (D) (terminal main body (50)) configured to hold a power supply circuit configured to supply drive power to the motor part (A) includes a tubular portion (50A) sandwiched by the members forming the housing (2) from both sides in the axial direction.

Abstract: A rotor, which is cylindrically formed of a magnetic body and in which a plurality of magnet embedding holes are annularly formed at predetermined intervals in a circumferential direction, plate-like permanent magnets being embedded in the magnet embedding holes, includes a flux barrier that is disposed toward an outer circumference of the rotor from an circumferential end of each of the magnet embedding holes, and a slit that is disposed to be adjacent to the flux barrier, in which the slit is a long hole extending in a direction of becoming distant from the flux barrier, from an inner circumferential side of the rotor toward an outer circumferential side thereof, and a notch portion is provided on the outer circumference of the rotor opposing the flux barrier in a diameter direction of the rotor.

Abstract: An axle drive unit may be employed by an electrically-driven motor vehicle having at least one drive axle. The axle drive unit may have at least one electric motor for generating a drive torque and at least one gearing (or transmission) for transmitting the drive torque to the drive axle. The electric motor and the gearing may form a structural unit. In short, the axle drive unit allows a drive train of a motor vehicle to have the simplest, weight-saving construction possible. Power electronics and an inductive charging receiver for a battery system may be integrated into the structural unit. The power electronics may be electrically connected to the inductive charging receiver and may be tuned to rectify an alternating voltage that can be induced in the inductive charging receiver.

Abstract: A motor includes a shaft, at least two bearings supporting the shaft, a magnet supported by the shaft between the at least two bearings, a stator surrounding the magnet, and a magnetic member arranged between the magnet and at least one of the bearings in a longitudinal direction of the shaft. The magnetic member has a large outer diameter with respect to an outer diameter of the magnet.