Abstract: A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil, and a pump driven through a motor shaft. The pump includes an external gear fixed to an end on one side in an axial direction of the motor shaft, an internal gear surrounding a radial outside of the external gear and meshing with the external gear, a pump room accommodating the internal gear and the external gear, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes an outer lid in which the pump room is provided.

Abstract: A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil, a pump driven through a motor shaft, and a transmission that transmits rotation of the motor shaft to a pump shaft. The pump includes an external gear fixed to the pump shaft, an internal gear surrounding the external gear and meshing with the external gear, a pump room provided in the housing and accommodating the internal gear and the external gear, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes a first oil passage connected to the discharge port. The motor shaft includes a second oil passage provided in the motor shaft and connected to the first oil passage and a first through-hole connecting the second oil passage and an outer circumferential surface of the motor shaft.

Abstract: A motor unit includes a motor including a rotor to rotate about a motor axis extending in a horizontal direction, a differential connected to the motor, a housing including a housing space to house the motor and the differential, oil in a vertically lower region of the housing space, and an oil passage to feed the oil from the vertically lower region of the housing space to the motor. A pump is fixed to an outer peripheral surface of the housing and is located in a channel of the oil passage. The pump is on an opposite side of the motor axis with respect to the differential when viewed in an axial direction of the motor axis.

Abstract: A motor includes a rotor to rotate about a motor axis, and a stator radially outside of the rotor. The rotor includes a shaft extending along the motor axis, and including a collar portion and a screw portion located along an axial direction on an outer circumferential surface thereof, a rotor core surrounding the shaft from radially outside, a rotor magnet fixed to the rotor core, a pair of plate-shaped end plates on both axial sides of the rotor core, and a nut screwed onto the screw portion. The rotor core and the pair of end plates are held between the collar portion and the nut. Each end plate includes a first surface opposite to an axial end surface of the rotor core, and a second surface facing away from the first surface. The first surface includes a slanting surface that slants toward the rotor core and extends radially outward, and is in contact with the axial end surface of the rotor core.

Abstract: A motor unit includes a motor including a shaft to rotate about a motor axis, and a stator, a reduction gear, and a housing. The shaft includes a first shaft portion, a connecting shaft portion, and a second shaft portion arranged coaxially with one another, and a separating mechanism between the connecting shaft portion and the second shaft portion. The first shaft portion includes a first end portion. The connecting shaft portion includes a second end portion coupled to the first end portion, a third end portion located on a side opposite to the second end portion, and a connection flange portion extending radially outward. The second shaft portion includes a fourth end portion. The separating mechanism selectively separates the connection flange portion and the fourth end portion from each other.

Abstract: A motor unit includes a motor, a housing including a housing space to house the motor, oil in a vertically lower region of the housing space, and an oil passage to lead the oil from the vertically lower region of the housing space through the motor to the vertically lower region of the housing space. The oil passage includes a first oil passage extending through an inside of the motor, and a second oil passage extending through an outside of the motor. One of the first oil passage and the second oil passage includes a cooler to cool the oil therein.

Abstract: A motor unit includes a motor including a rotor to rotate about a motor axis extending in a horizontal direction, and a stator radially outside of the rotor, a housing including a housing space to house the motor, oil in a vertically lower region of the housing space, and an oil passage to feed the oil from the vertically lower region of the housing space to the motor. A channel of the oil passage includes a main reservoir and an auxiliary reservoir to store the oil. Each of the main reservoir and the auxiliary reservoir includes an outflow port to feed the oil to the motor. The main reservoir is located on an upstream side of the auxiliary reservoir in the oil passage. The auxiliary reservoir is structured to receive a portion of the oil overflowing from the main reservoir.

Abstract: In a drive device, a pump includes a pump room in a housing, a suction port through which oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes an inner lid that holds a bearing journaling a motor shaft and covers one side in an axial direction of a stator, an outer lid that is attached to one side in the axial direction of the inner lid and covers one side in the axial direction of the motor shaft, and a suction oil passage connecting a lower region in a vertical direction in an accommodation portion and the suction port. At least a portion of the suction oil passage is between the inner lid and the outer lid. The inner lid includes an opening penetrating the inner lid and connecting the lower region in the vertical direction and a portion of the suction oil passage between the inner lid and the outer lid. The strainer is provided in the opening.

Abstract: A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil and accommodate the rotor and the stator, a pump driven through a motor shaft, and a valve in the housing. The pump includes a pump room in the housing, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes a first oil passage connected to the discharge port and a branch oil passage that is connected to the first oil passage and is open to an inside of the accommodation portion on an upper side in a vertical direction of the stator. The motor shaft includes a second oil passage located in the motor shaft and connected to the first oil passage and a first through-hole connecting the second oil passage and an outer circumferential surface of the motor shaft.

Abstract: A method includes attaching an upper substrate to an upper surface of a sensor substrate, forming, on an upper surface of the upper substrate, a mask providing a first opening and a second opening communicating with the first opening, the second opening having a width that decreases with increase in a distance from the first opening, carrying out a sandblast process on the upper substrate exposed to an outside via the first opening and the second opening, allowing the sensor substrate to be exposed to the outside immediately below the first opening, and forming a slope on the upper substrate immediately below the second opening, and forming a first wiring member in contact with the exposed sensor substrate and a second wiring member being in contact with the slope and continuing to the first wiring member.

Abstract: A measurement device includes: attachment holes, provided on a scale frame with respect to a measurement direction; rear-face bushings inserted into the attachment holes from a rear face side of the scale frame; and fasteners that fix the scale frame to first measurement target part. Each of the rear-face bushings includes: a cylinder part, which is formed shorter than the length of the attachment holes with respect to a penetration direction and is formed having an outer diameter smaller than the inner diameter of the attachment holes; a flange, which is formed at the end of the cylinder part located toward the first measurement target part and which has an outer diameter greater than the inner diameter of the attachment holes; and an elastic member, which is cylindrical in shape and is provided covering the outer circumferential surface of the cylinder part.

Abstract: A method of manufacturing a physical quantity detection sensor includes forming a stacked structure having a plurality of sensor devices by bonding together a sensor substrate and a different type substrate of a different material from a material of the sensor substrate, the sensor substrate having a plurality of sensor movable portions therein, and dicing the stacked structure using a dicing blade, wherein a groove is provided in one of the sensor substrate and the different type substrate to penetrate the one of the sensor substrate and the different type substrate, the groove having a width larger than a width of the dicing blade, and in at least part of the dicing, the dicing blade is accommodated in the groove and advances without contacting surfaces on left and right sides of the groove.

Abstract: There are provided a method of producing reclaimed carbon fibers in which, even if a carbon fiber reinforced resin is not heated at 800° C., or higher, pieces of carbon fiber base material that are contained in the carbon fiber reinforced resin can be directly collected, and the variation in the resin residue content in the collected pieces of carbon fiber base material can be reduced, a device for producing reclaimed carbon fibers that can be used in the production method, and a method of producing a carbon fiber reinforced resin in which reclaimed carbon fibers can be effectively used.

Abstract: A fuel injection device for an internal combustion engine includes: a high/low pressure fuel system configured to inject fuel into cylinders 12a to 12d through an in-cylinder injector 44; and a low pressure fuel injection system configured to inject fuel into an intake manifold 14 through an intake path injector 46. An ECU 60 incorporates: an idling stop/start unit 68 that stops the engine when an idling stop condition is satisfied, and restarts the engine when the idling stop condition is no longer satisfied; and a fuel injection control unit 70 that causes, after the idling stop condition is no longer satisfied, fuel remaining in the first fuel injection unit to be injected into the cylinder, before rotation of a crank shaft 32 starts, so that the engine 10 is automatically restarted, and causes fuel injection to be started from the second fuel injection unit when predetermined condition is satisfied.

Abstract: In a drive apparatus, a pump includes an external gear fixed to an end portion of a motor shaft on a first axial side, an internal gear surrounding the external gear on a radially outer side thereof to mesh with the external gear, a pump chamber to house the internal gear and the external gear, a suction inlet to suck an oil into the pump chamber, and a discharge outlet to discharge the oil from inside the pump chamber. The housing includes an outer cover to cover the motor shaft on the first axial side and having the pump chamber defined therein, and a first oil passage defined in the outer cover and connected to the discharge outlet. The motor shaft includes a second oil passage in an interior of the motor shaft and connected to the first oil passage, and a first through hole to connect the second oil passage to an outer circumferential surface of the motor shaft. The first oil passage is located on the first axial side of the pump chamber.

Abstract: A drive apparatus includes a motor that includes a motor shaft disposed along a first central axis that extends in one direction, a housing that includes a first housing portion housing the motor and that is capable of storing oil, and a liquid cooling portion disposed in thermal contact with an inverter electrically coupled to the motor, the liquid cooling portion including a refrigerant liquid flowing therein. The housing includes a contact portion with which the liquid cooling portion is in thermal contact. At least a portion of the contact portion is disposed below an oil surface of the oil stored in the housing.

Abstract: A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil, a pump driven through a motor shaft, and a transmission that transmits rotation of the motor shaft to a pump shaft. The pump includes an external gear fixed to the pump shaft, an internal gear surrounding the external gear and meshing with the external gear, a pump room provided in the housing and accommodating the internal gear and the external gear, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes a first oil passage connected to the discharge port. The motor shaft includes a second oil passage provided in the motor shaft and connected to the first oil passage and a first through-hole connecting the second oil passage and an outer circumferential surface of the motor shaft.

Abstract: A drive apparatus includes a motor that includes a motor shaft disposed along a first central axis that extends in one direction a housing that includes a first housing portion housing the motor and that is capable of storing oil, a liquid cooling portion disposed in thermal contact with an inverter electrically coupled to the motor, the liquid cooling portion including a refrigerant liquid flowing therein, and a pipe portion connected to the liquid cooling portion, the refrigerant liquid inside the liquid cooling portion flowing in the pipe portion. The pipe portion passes inside the housing.

Abstract: A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil and accommodate the rotor and the stator, a pump driven through a motor shaft, and a valve in the housing. The pump includes a pump room in the housing, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes a first oil passage connected to the discharge port and a branch oil passage that is connected to the first oil passage and is open to an inside of the accommodation portion on an upper side in a vertical direction of the stator. The motor shaft includes a second oil passage located in the motor shaft and connected to the first oil passage and a first through-hole connecting the second oil passage and an outer circumferential surface of the motor shaft.

Abstract: A motor unit includes a motor including a shaft to rotate about a motor axis, and a stator, a reduction gear, and a housing including a housing space that includes a motor chamber to house the motor and a gear chamber to house the reduction gear. The housing includes a partition to divide the motor chamber and the gear chamber. The shaft includes a first shaft portion, a connecting shaft portion, and a second shaft portion arranged coaxially with one another, and a separating mechanism between the connecting shaft portion and the second shaft portion. The first shaft portion includes a first end portion extending through an insert hole defined in the partition from a side on which the motor chamber lies. The connecting shaft portion includes a second end portion coupled to the first end portion, a third end portion located on a side opposite to the second end portion, and a connection flange portion extending radially outward at the third end portion.