Abstract: A stator assembly includes a stator core including teeth, which are formed along an inner circumferential surface of the stator core, extend from one surface of the stator core to an opposite surface of the stator core, and have through holes formed through one surfaces of the teeth, respectively, a plurality of hairpins, each hairpin coupled to and connected with a slot formed between the teeth facing each other and forming form a coil winding, and a heat radiating device including a first heat radiating member provided at one side of the one surface of the stator core to discharge heat of the hairpin to an outside, such that the hairpin is cooled.

Abstract: A motor includes: a stator including assemblies; and a rotor disposed on one side of the stator. Each of the assemblies includes: a bobbin; a core inserted into the bobbin; and a coil surrounding an outside of the bobbin. The bobbin includes: a main through hole into which the core is inserted; and a sub-through hole disposed in either one of a top surface and a bottom surface on one side of the main through hole. An inner space of the bobbin is communication with the outside of the bobbin through the sub-through hole.

Abstract: A terminal assembly for a traction motor includes a bus bar having a ring shape and a terminal holder configured to accommodate the bus bar therein to cover an exterior of the bus bar. The terminal assembly includes: the terminal holder which is perforated to form a coupling hole therein through which a surface of the bus bar is exposed; and a temperature sensor unit which is inserted into the coupling hole and senses a temperature of the bus bar. The terminal assembly for the traction motor according to the present disclosure has a structure in which the temperature sensor unit is coupled to the terminal holder. Thus, the epoxy application process of the related art may be omitted, the occurrence of errors due to the epoxy application may be fundamentally prevented, and the assembly process may be further simplified.

Abstract: Disclosed is a motor. The motor includes a housing part including a housing body, and a housing cover that covers one side of the housing body, a stator provided in an interior of the housing body, a rotor assembly accommodated inside the stator to be rotatable, and having a fluid flow path for causing a cooling fluid introduced to a front side thereof to flow into a rear side that faces the housing cover, and a reflective plate coupled to the rotor assembly, disposed between the rotor assembly and the housing cover, and that defines a fluid spattering path, along which the cooling fluid that flows through the fluid flow path spatters in a radial direction thereof.

Abstract: Disclosed are a rotor plate and a rotor assembly including the same. The rotor plate includes a plate body including a first part having a first hole at a center, and a second part having a second hole at a center, the second part having a diameter corresponding to the first part, and connected to the first part in a first direction that is an axial direction perpendicular to the first part, and a diameter of the second hole is larger than a diameter of the first hole, a first slot recessed on an outer peripheral surface of the plate body, a second slot recessed on the outer peripheral surface of the plate body, and a first plate passage formed on a wall of the first part in the second direction that is opposite to the first direction, and connecting the first slot and the first hole.

Abstract: A grommet includes a body, which has a block shape with a wire passing hole formed by perforation, and a guide, which extends from one end of the body at a predetermined angle and has a guide hole formed by perforation.

Abstract: An urban air mobility (UAM) noise reduction system and method are provided, where the UAM noise reduction system includes a UAM configured to detect and to provide rotation per minute (RPM) information of a propeller and location coordinate information, and a noise canceling device configured to predict a noise canceling sound wave amplitude on the basis of the RPM information of the propeller and the location coordinate information received through the UAM and to output a noise canceling sound wave corresponding to the predicted noise canceling sound wave amplitude to the UAM.

Abstract: The present disclosure relates to a rotor assembly and a motor including the same. The rotor assembly according to the present disclosure includes a rotor core having a through-hole formed through a central portion thereof in an axial direction of the rotor core, and a rotor shaft that is coupled to the rotor core through the through-hole and that has a hollow into which a cooling fluid is introduced. A cooling fin protrudes from an inner circumferential surface of the rotor core toward the rotor shaft to form, between the rotor core and the rotor shaft, a rotor cooling channel through which the cooling fluid flows.

Abstract: A stator for a motor includes a hole formed at a center thereof by arranging a plurality of assemblies along a circumferential direction (C) of the stator. Each of the plurality of assemblies includes: a stator core; a bobbin; a coil; and a plurality of bus bars disposed on the bobbin. The plurality of bus bars include first to third bus bars. In the plurality of assemblies, both ends of the first bus bar in the circumferential direction (C) and both ends of the second bus bar in the circumferential direction (C) are spaced apart from each other in the circumferential direction (C) while being spaced apart from each other in a radial direction (R) or an axial direction (A) of the stator.

Abstract: A terminal block for a motor, which is configured to connect a motor and an external power source to each other, includes: terminal members spaced apart from one another; and a holder comprising insulation parts spaced apart from one another and configured to respectively surround the terminal members, and a base block supported on a subject and configured to connect the insulation parts to one another.

Abstract: The present disclosure relates to a motor including: a stator including a plurality of split cores configured to collectively define a ring shape, and bobbins configured to respectively surround the plurality of split cores and each having a coil wound therearound; a busbar unit electrically connected to the coils; and support parts respectively disposed on the bobbins and configured to support the busbar unit, thereby improving durability, stability, and reliability.

Abstract: The present disclosure relates to a motor including: a plurality of terminals; an insert member configured to support the plurality of terminals spaced apart from one another; and a holder configured to surround the plurality of terminals and the insert member, thereby simplifying a structure and a manufacturing process and improving durability.

Abstract: A bobbin includes: a first bobbin member including a first part extending in a direction that crosses a first direction, and a second part extending in a direction that crosses the direction in which the first part extends; a second bobbin member spaced apart from the first bobbin member along the first direction; a third bobbin member spaced apart from the first bobbin member in a second direction that crosses the first direction; and a fourth bobbin member spaced apart from the second bobbin member along the second direction, and spaced apart from the third bobbin member along the first direction. The first, second, third, and fourth bobbin members have shapes and sizes that are compatible.

Abstract: A structure for assembling a temperature sensor of an annular terminal unit for a drive motor. The structure includes a terminal holder having an annular shape, a temperature sensor fixed to the terminal holder, a plurality of cores radially arranged on a lower surface of the terminal holder, a bobbin inserted into each of the plurality of cores, and a stator coil wound around each of the bobbins. The temperature sensor passes through the terminal holder in a vertical direction of the terminal holder and is inserted between the bobbins around which the stator coils are wound.

Abstract: The present disclosure relates to a motor including: a stator around which coils are wound; a terminal including a body disposed at one end of the stator, and terminal parts protruding from an inner peripheral surface of the body; a holder including a holder body configured to support the body, and a terminal holder part disposed on an inner peripheral surface of the holder body and configured to allow the terminal parts to be disposed thereon; and a support member configured to support the terminal holder part, thereby improving durability, stability, and reliability.

Abstract: A busbar unit electrically connected to a motor comprising a stator around which a coil is wound includes: a first terminal including a first body and a first terminal part protruding from an upper portion of the first body and electrically connected to the coil; a first holder configured to support the first terminal such that the first terminal part is exposed to an outside of the busbar unit; and a second holder disposed on an upper portion of the first holder and configured to press the coil against the first terminal part.

Abstract: The present disclosure relates to a motor including: a stator including a plurality of split cores configured to cooperatively define a ring shape; and support rings configured to surround outer circumferential surfaces of the split cores and to support upper and lower surfaces of the split cores, thereby improving stability and reliability.

Abstract: The present invention relates to a terminal device for a drive motor of a vehicle. The terminal device includes: a core bobbin assembly having a core mounted in a circumferential direction, the core having a coil wound therearound; a support ring for supporting an outer part of the core bobbin assembly; and a terminal assembly for being fitted with the support ring. The terminal for constituting the terminal assembly is provided with a resin injection hole formed vertically along an inner circumference thereof, and the resin injection hole are injected with a synthetic resin for holding the terminal assembly and the core bobbin assembly together.

Abstract: The present disclosure relates to a busbar unit for a motor, the busbar unit including: a first terminal; a second terminal provided to be spaced apart from the first terminal in a first direction; a third terminal stacked on the first terminal in a second direction perpendicular to the first direction; a fourth terminal stacked on the second terminal in the second direction; and a holder configured to support the first terminal, the second terminal, the third terminal, and the fourth terminal, thereby obtaining an advantageous effect of simplifying a structure and improving a degree of design freedom and spatial utilization.

Abstract: A motor includes: a stator including assemblies; and a rotor disposed on one side of the stator. Each of the assemblies includes: a bobbin; a core inserted into the bobbin; and a coil surrounding an outside of the bobbin. The bobbin includes: a main through hole into which the core is inserted; and a sub-through hole disposed in either one of a top surface and a bottom surface on one side of the main through hole. An inner space of the bobbin is communication with the outside of the bobbin through the sub-through hole.