Abstract: A housing of a drive device includes a refrigerant flow path through which a refrigerant flows. The refrigerant flow path includes a first flow path, a second flow path, a third flow path, and a fourth flow path. The refrigerant to be sent from a pump flows through the first flow path. The refrigerant to be supplied to the motor portion flows in the second flow path. The third flow path supplies a part of the refrigerant flowing through the second flow path to the outer surface of a stator. The fourth flow path supplies the other part of the refrigerant flowing through the second flow path to a hollow portion of a shaft. A minimum flow-path cross-sectional area in the fourth flow path is smaller than a minimum flow-path cross-sectional area in the third flow path.

Abstract: A rotary electric machine includes a rotor having a hollow shaft, a housing, a current shunter fixed to the housing and in electrical contact with the shaft and the housing, and a nozzle member for feeding a fluid inside the shaft. The shaft has an open end portion on a first axial side. The housing includes a bottom wall on the first axial side from the open end portion, and a peripheral wall protruding from the bottom wall toward a second axial side and surrounding the open end portion. The nozzle member has a feeding tubular part at least partly inserted inside the shaft from the open end portion, and a flange portion protruding radially outward from the feeding tubular part. The current shunter is located radially inside the peripheral wall, and the flange portion is located between the current shunter and the bottom wall in an axial direction.

Abstract: A transmission mechanism device includes a transmission mechanism including a hollow shaft, and a bearing supporting an outer face of the shaft. A holder holding the bearing is on the inner face of a housing of the transmission mechanism. The holder has a facing face facing an end of the shaft, a tubular portion holding the bearing and protruding in the axial direction radially from the facing face, and a rib inside the tubular portion and protruding in the axial direction from the facing face. The rib extends in a concave shape opening upward. A lower end of an inner face of the rib is below an upper end of an inner face of the shaft when viewed from the axial direction. At least one end of the rib in an extending direction faces an inner face of the tubular portion via a gap when viewed from the axial direction.

Abstract: A transmission mechanism device includes a transmission mechanism including gears, a first shaft, and a first bearing supporting the first shaft, a housing accommodating the transmission mechanism and having a first bearing holder portion on the inner face, oil collected in the lower region of the housing, and a catch tank disposed in the housing and opens upwards. The first bearing holder portion has a holding tubular portion that holds the first bearing from radially outside. The holding tubular portion has a cutout portion that connects the inside and outside of the holding tubular portion. A flow passage including a cutout portion is provided on the inner face of the housing. The catch tank includes a reservoir and a feed portion extending from the inside of the reservoir to the holding tubular portion. The distal end portion of the feed portion is inserted into the flow passage.

Abstract: One aspect of a drive apparatus of the present invention includes: a rotor having a shaft that rotates about a central axis; a stator disposed radially outside the rotor; a bus bar unit having a plurality of bus bars connected to the stator and a bus bar holder supporting the bus bars; a fluid feed portion disposed radially outside the stator and provided with a feed hole for feeding a fluid to the stator; and a housing that accommodates the rotor, the stator, the bus bar unit, and the fluid feed portion. The bus bar unit extends along the circumferential direction along the outer periphery of the stator and has an opening portion that opens toward the stator.

Abstract: A drive apparatus includes a motor, a transmission, an inverter, a housing accommodating the motor, transmission, inverter, and a fluid, a refrigerant for the inverter, a pump for the fluid, and a cooler that exchanges heat between the fluid and refrigerant. The housing includes first-third portions accommodating the motor, transmission and inverter, respectively, and a support portion. The second portion is on one side of the first portion in an axial direction. The support portion is radially outside in a circumferential direction, and is connected to an outer peripheral portion of the first portion and a bottom portion of the third portion. The support portion supports the pump and the cooler. Any one of the pump and the cooler is disposed on one side in the circumferential direction with respect to the support portion, and the other is disposed radially outside with respect to the support portion.

Abstract: A rotating electrical machine includes a rotor, a stator, a housing, a bearing, an electricity removal device in electrical contact with a shaft and the housing, a nozzle supplying a fluid into the shaft, and a cover covering a part of the device. The shaft includes a hollow first member, a hollow second member coupled to a first side of the first member, and a channel communicating the inside and outside of the shaft. A part of the nozzle is inserted into the second member from an opening end. The housing has a peripheral wall surrounding the opening end. The bearing is held in the peripheral wall and is positioned away on the second side of the device. The cover is axially between the bearing and the device. The channel is opened in a portion positioned on the second side relative to the cover inside the peripheral wall.

Abstract: A rotating electrical machine includes an electricity removal device in electrical contact with a shaft and a housing, a channel, a nozzle having a through hole communicating with an inside of the shaft, and a seal radially between the shaft and the housing. The shaft includes a hollow first portion and a second portion having a lid on a first side of the first portion and an extension extending from the lid to the first side. The extension axially passes through the through hole. The device is in contact with the extension on the first side relative to the through hole. The seal is on the first side relative to the nozzle and on the second side relative to the device. The shaft includes a channel communicating the first portion and the through hole. The channel opens toward an axial gap between the nozzle and the seal of the housing.

Abstract: A control system includes at least one processor and at least one memory. The at least one processor is configured to determine operation data by repeating a process of calculating control target data indicating a predicted value of a control target in a plant and the operation data indicating an operation value of a control device of the plant by a given calculation model based on observation data indicating an actual value of the plant.

Abstract: A drive apparatus includes a motor, a housing having a motor accommodating portion, and a flow path for a fluid. The housing includes first and second side walls opposite along an axial direction of the motor and extending along a plane orthogonal to the motor axis, and a peripheral wall surrounding the motor. The flow path includes a first intra-side wall path provided in the first side wall, a first intra-housing path connected to the first intra-side wall path and extending inside the motor accommodating portion along the axial direction, a second intra-side wall path connected to the first intra-housing path and provided in the second side wall, and a second intra-housing path connected to the second intra-side wall path and extending inside the motor accommodating portion along the axial direction. The first and second intra-housing paths are provided with feed holes for feeding fluid to the motor.

Abstract: One aspect of a drive apparatus of the present invention includes a motor having a rotor that rotates about a motor axis and a stator that surrounds the rotor, a housing having a motor accommodating portion that accommodates the motor, a fluid stored in the housing, a flow path through which the fluid flows, and a pump that pressure-feeds the fluid in the flow path. The flow path includes a pipe-shaped intra-housing flow path that is disposed inside the motor accommodating portion and is provided with a feed hole for feeding the fluid to the motor, a pipe portion that is disposed inside the motor accommodating portion and relays between the pump and the intra-housing flow path, and an intra-side wall flow path that is provided in a wall portion of the housing and connects the pipe portion and the intra-housing flow path. The pipe portion and the intra-housing flow path are connected to each other by a coupling portion.

Abstract: A motor has a rotor and a stator surrounding the rotor; a transmission mechanism having gears; a housing having a motor accommodating portion accommodating the motor, and a gear accommodating portion accommodating the transmission mechanism; a fluid stored in the housing; and a flow path through which the fluid flows. The housing has a side wall portion that defines an internal space of the motor accommodating portion and an internal space of the gear accommodating portion. The flow path includes an intra-housing flow path disposed in an internal space of the motor accommodating portion and provided with a feed hole for ejecting a fluid. A bearing holder that supports the shaft of the transmission mechanism via a bearing is provided on a gear facing surface of the side wall portion facing the transmission mechanism. The feed hole faces the bearing via an opening provided in the side wall portion.

Abstract: A zinc-plated steel sheet for hot stamping according to an aspect of the present invention includes a base steel sheet satisfying a predetermined composition of chemical components, wherein an amount of solid-soluted B is 10 ppm or more and the base steel sheet has a hot-dip galvannealed layer or a hot dip galvanized layer on at least one face thereof.

Abstract: In an electric power unit that includes: a motor accommodating portion and a gear accommodating portion in a housing; and an inverter accommodating portion and an auxiliary machine attachment portion formed on side walls of the housing, the auxiliary machine attachment portion is formed by a protruding portion having at least a first vertical surface and a first horizontal surface formed on one of the side walls forming the motor accommodating portion and the gear accommodating portion of the housing, a first rib extending in a horizontal direction is formed on the first vertical surface facing one axial side of the auxiliary machine attachment portion, and a second rib, which extends in a vertical direction with respect to the first horizontal surface and connects the first horizontal surface and the inverter accommodating portion, is formed on the first horizontal surface, adjacent to the inverter accommodating portion, of the auxiliary machine attachment portion.

Abstract: In an electric power unit which accommodates at least an electric motor in a housing, polygonal rib regions in which polygonal ribs are respectively formed are provided on at least two surfaces of an outer peripheral surface of the housing, and the polygonal rib regions are connected by a circumferential rib. Here, a first axial rib and a second axial rib extending parallel to an axial direction are formed on the outer peripheral surface of the housing, and the polygonal rib region is provided in a portion sandwiched between the first axial rib and the second axial rib. Further, the circumferential rib is formed over the entire part of the polygonal rib region in a circumferential direction. Note that the polygonal rib is a honeycomb rib.

Abstract: A drive device includes a first shaft, a gear portion, a lubricant flow path, and a housing. A gear portion having a second shaft is connected to an end portion of the first shaft in the axial direction. A side plate portion of the housing separates a motor tubular portion surrounding a motor accommodation portion that accommodates a rotor and a stator and a gear tubular portion surrounding a gear accommodation portion that accommodates the gear portion. First and second bearing holding portions disposed in the side plate portion rotatably support the first and second shafts via the first and second bearings, respectively. A lubricant supply portion that is disposed radially outward of the stator and supplies lubricant to the stator includes a lubricant flow path through which lubricant can flow. The lubricant flow path is connected to at least one of the first and second bearing holding portions.

Abstract: A drive device includes a first catch tank above a first gear and including a first bent portion bent between the first gear and a second gear, and a second catch tank below the first catch tank and including a second bent portion that is bent downward. A space above the second bent portion communicates with a space above the first bent portion. A third catch tank is above the second gear, and includes a third bent portion that is bent toward between the first gear and the second gear. A space above the third bent portion communicates with the space above the first bent portion. A fourth catch tank is in front of the second gear and above the third gear, and includes a fourth bent portion that is bent downward.

Abstract: A transmission mechanism device of an aspect of the present invention includes a motor, a transmission mechanism including a plurality of gears, a first shaft and a bearing supporting the first shaft and transmitting power of the motor, a housing that accommodates the transmission mechanism and holds the bearing on an inner face, oil that collects in a lower region inside the housing, a catch tank that is disposed inside the housing and opens upward, an oil passage through which the oil passes, and an oil pump provided in the oil passage. The oil passage has a first path connecting the oil pump and the catch tank and a scooping path for scooping the oil by rotation of the gear to guide the scooped oil to the catch tank. The catch tank includes a feed portion for supplying the oil to the gear or the bearing.

Abstract: A high-strength steel sheet with excellent delayed fracture resistance, having a tensile strength of 1700 MPa or larger, including a predetermined component composition, having a martensite structure whose ratio accounts for 95 area % or more of the entire metallographic structure, and having a transition metal carbide whose ratio accounts for 0.8 volume % or more of the entire metallographic structure.

Abstract: A housing of a drive device includes a refrigerant flow path through which a refrigerant flows. The refrigerant flow path includes a first flow path, a second flow path, and a connection flow path. The refrigerant to be sent from a pump flows through the first flow path. The refrigerant to be supplied to the motor portion flows in the second flow path. The first flow path and the second flow path are connected to the connection flow path. At least a part of the connection flow path is disposed in the motor accommodation space for accommodating the motor portion.