Abstract: A bush attached to a through hole of a casing of a motor holds a conductor. The bush includes a main body, an insertion hole, a flange, and a rib. The main body includes a first end surface, a second end surface facing the first end surface in a first direction, and side surfaces between the first end surface and the second end surface. The insertion hole penetrates an inside of the main body in the first direction, and allows the conductor to pass through. The flange protrudes from a side surface in a direction perpendicular or substantially perpendicular to the first direction. The rib protrudes from the side surface in a direction perpendicular or substantially perpendicular to the first direction.

Abstract: In an aspect of the motor of the present invention, the motor includes a shaft centered on a center axis extending in a predetermined direction, and a stator located radially outside of the shaft. The stator has a coil wound around the stator. The motor further includes a housing member having a substantially cylindrical shape with a bottom, where the housing member accommodates substantially the entire stator, and supports the shaft, a cooling medium with which the housing member is filled, where the stator and the coil is immersed in the cooling medium, and a rotor that rotates radially outside of the housing member with the center axis of the shaft as a rotation center.

Abstract: An in-wheel electric motor includes at a vehicle side an elongated connector, a cylindrical stator body connected to the connector and on an outer surface of the stator body equipped with stator windings, a cylindrical rotor body enclosing the stator, and a power electronics device powering the stator windings. The connector is provided with a first opening of a feed channel for coolant and a second opening of a return channel for coolant, each of the feed and return channels being parallel to an axial direction of the connector. The electric motor includes a cooling circuitry with a feed connector and a return connector for coolant, which circuitry includes a coolant supply channel that extends from the feed connector through first the power electronics device and subsequently through a cooling jacket that is situated at the perimeter of the cylindrical stator body and from there to the return connector.

Abstract: An electric drive unit comprises an electric drive device having a stator and a rotor, the stator and the rotor being disposed in a stator housing which extends along a longitudinal axis, a cable, wherein a first portion of the cable is connected to the drive device, and a liquid encapsulation is disposed on a second portion of the cable which has individual lines which are litz wires. A rear flange at an end side that faces away from an interior of the stator housing and has an annular space disposed on one end of the stator housing, wherein the liquid encapsulation is disposed in the annular space.

Abstract: Various embodiments relate to a stator having an improved structure of an insulator coupled to teeth and to a motor having the stator. The stator includes an insulator. The insulator includes: a coil-wound portion surrounding an outer circumferential face of a tooth; and both side walls respectively extending from both sides of the coil-wound portion, wherein the both side walls and the coil-wound portion defines a space receiving the coil, wherein one of the both side walls includes a coupling portion, wherein the insulator are divided into two parts and the two parts are coupled to each other via the coupling portion such that the tooth is inserted into and coupled to the insulator.

Abstract: Various embodiments relate to a motor in which a structure of an insulator is improved. The motor includes an upper insulator coupled to a top face of a stator core. The upper insulator includes a power terminal unit connected to each of 3-phases power lead wires; and an upper insulator body for insulating the power terminal unit from the stator core. The upper insulator includes protrusions radially protruding from the upper insulator body. Each protrusion has a guide hole defined therein for receiving each of the 3-phases power lead wires.

Abstract: One aspect of a motor of the present disclosure may include a rotor having a motor shaft disposed along a central axis extending in one direction, a stator facing the rotor via a gap in a radial direction, and a housing having an accommodating portion configured to accommodate the rotor and the stator, and to enable oil to be stored therein, wherein the housing comprises a lower wall portion facing a vertical-directional lower region in the inside of the accommodating portion, the lower wall portion comprises a cooling flow passage formed therein, and refrigerant flows in the cooling flow passage, and at least a portion of the cooling flow passage overlaps the vertical-directional lower region in the inside of the accommodating portion when viewed along a vertical direction.

Abstract: The rotating electrical machine includes a rotor held so as to be able to rotate, and a stator that opposes the rotor and has a stator iron core in which a multiple of slots are formed. The stator includes a coil wound around a toothed portion that forms the multiple of slots and an annular frame that holds an outer periphery of the stator iron core, a trunk portion and a flange portion are formed in the frame, a notch portion is provided in the trunk portion and the flange portion, the stator iron core is held by the trunk portion, and a reinforcing member that straddles the notch portion is provided on the flange portion.

Abstract: A rotary electric machine includes a cylindrical portion. In the cylindrical portion, a coolant passage having annular shape is formed to allow the coolant to flow therethrough. The coolant passage is formed meandering in the axial direction and the passage width of the coolant passage in a first end side in the radial direction is narrower than the passage width in the radial direction in the second end side. The coolant passage includes a circumferential passage in the first end side where the coolant flows in the circumferential direction. The circumferential passage is configured such that a passage opening area of an intermediate portion between an input portion in an upstream side of the coolant passage and an output portion in a downstream side of the coolant passage is expanded compared to those of the input portion and the output portion.

Abstract: An electric machine includes a stator core and interconnected hairpins attached to the stator core and defining a path. A pair of the interconnected hairpins have first and second ends, respectively, and are circumferentially spaced apart from each other. A jumper is interconnected between the first and second ends. The jumper has a body defining first and second holes that receive the first and second ends, respectively. The first hole is defined by a perimeter having opposing first and second walls and opposing third and fourth walls.

Abstract: A motor including a rotor, a stator, an inverter, a housing, and a cover member. The housing is a single member that includes: a stator housing portion; an inverter housing portion housing the inverter; and a partition wall located between the stator housing portion and the inverter housing portion. The housing opening through which at least a part of the stator, an end on one side in an axial direction of the partition wall, and at least a part of the inverter housing portion are exposed is provided at an end on the one side in the axial direction of the housing. A three-phase coil wire extending from the stator passes through the end of the partition wall to the inverter, extends up to the inverter, and is connected to a connector terminal provided at an end on the one side in the axial direction of the inverter.

Abstract: A motor includes binding pins around which a coil lead wire is wound, and an end on one side in an axial direction of the binding pin and the coil lead wire are fixed to a surface facing one side in the axial direction of a substrate. An insulator assembly includes a substrate receiver contacting with the substrate from the other side in the axial direction. A heat sink is fixed to a cover, and an end on the other side in the axial direction of the heat sink presses down the integrated circuit mounted on the substrate toward the other side in the axial direction. The heat sink and the substrate receiver are disposed at positions where the heat sink and the substrate receiver overlap each other as viewed in the axial direction.

Abstract: An armature molded structure includes a cylindrical iron core used for a molded structure of a motor armature; a winding; and molding resin, wherein the iron core includes first core sheets and second core sheets, the first core sheet includes first magnetic poles placed along a circumferential direction of the iron core, tip portions, on an inner peripheral side of the iron core, of adjacent first magnetic poles form a coupling portion coupling the adjacent first magnetic poles, the second core sheet includes second magnetic poles placed along the circumferential direction of the iron core, tip portions, on the inner peripheral side of the iron core, of adjacent second magnetic poles form a non-coupling portion separating the adjacent second magnetic poles, the first and second core sheets are laminated along a central axis direction of the iron core in such a manner that the coupling portions coincide with each other, the non-coupling portions coincide with each other, the coupling portion and the non-coupl

Abstract: In a first aspect, a method of performing maintenance operations in an electrical machine is provided. The method comprises positioning the rotor in a first position; disconnecting electrical windings, removing one or more segments of an electrical conductor ring and positioning the rotor in a second position without connecting the removed segments of the electrical conductor ring. In a further aspect, a method of operating an electrical machine is also provided. In yet a further aspect, it is provided an electrical machine comprising an electrical conductor ring having a releasable segment.

Abstract: A direct-current motor commutator structure includes: a commutator base, comprising a front pressing ring, a pressing plate and a sleeve that are sequentially abutted, a sealing ring being provided between the front pressing ring and the pressing plate, and between the pressing plate and the sleeve constituting a bearing area; a commutator, mounted in the bearing area and having opposite first and second portions; a sealing element being potted or provided between the second portion and the sleeve; an equalizing cable, mounted on an outer side of a first potting area formed by the first portion, the pressing plate and the front pressing ring, abutting against the first portion and the front pressing ring, and covering the first potting area; and an armature coil, clinging to the equalizing cable and located on an outer side of a second potting area formed by the equalizing cable and the front pressing ring.

Abstract: A capacitor unit (20) includes: a harness side terminal (23) provided on a first end portion (22a) side of a first surface of a housing (22) for accommodating a capacitor main body therein; a board side terminal (24) provided in the housing (22) and connectable to a circuit board; and a plurality of guide portions (25) that protrude from the first surface and extend from a second end portion (22b) on a side opposite to the first end portion (22a) toward the first end portion (22a). The plurality of guide portions (25) are provided to be separated in a second direction orthogonal to a first direction of connecting the first end portion (22a) and the second end portion (22b) to each other so as to sandwich the harness side terminal (23) therebetween.

Abstract: Provided is an armature structure of a three-phase motor which includes: 6N (N is a natural number) slots; 3N coils per phase; 3N main poles; and 3N auxiliary poles.

Abstract: A method for manufacturing a slipring module comprising a plurality of sliding tracks and an insulating body. The method includes: making a monolithic sliding track component preferably by a 3D printing process. The monolithic sliding track component comprises a plurality of sliding tracks, multiple connector for electrically connecting the sliding tracks, and at least one strut for mechanically interconnecting the sliding tracks and the connector to form a monolithic sliding track component; inserting the monolithic sliding track component into a mold; filling the mold with an insulating material such as a plastic material, and curing the plastic material; removing the molded product forming a slipring module from the mold, and removing the at least one strut from the slipring module.

Abstract: A motor includes a stationary portion including an annular stator centered on a central axis extending in a vertical direction, and a rotating portion including a magnet radially opposite to the stator, and rotatable about the central axis. The stationary portion includes a circuit board axially below the magnet and an electronic component mounted on the circuit board, the circuit board includes a board hole passing therethrough in an axial direction. The electronic component includes a component body portion including at least a portion thereof in the board hole, a first terminal portion extending in a first direction from the component body portion, the first direction being not parallel to the axial direction, a second terminal portion extending downward from the first terminal portion, and a third terminal portion extending from the second terminal portion, and joined to the circuit board through solder.

Abstract: A winding structure of motor stator includes a stator core, two insulation members, an upper cap, a lower cap, and a coil. The two insulation members are disposed on two winding grooves of the stator core respectively. The upper cap and the lower cap are disposed on a top end and a bottom end of the stator core respectively. The coil is wound on the upper cap, the two insulation members, and the lower cap. Stopping pieces facing each other are formed on two sides of each of the upper cap and the lower cap. Each of the stopping pieces is separated from the coil without contact.