Abstract: A gearbox and a motor driver having the gearbox are provided. The gearbox includes: a first gear, configured to be rotatable around a first gear shaft parallel to a first direction; a second gear, configured to be rotatable around a second gear shaft parallel to the first gear shaft, and the second gear engages with the first gear, and an outer diameter of the second gear is larger than an outer diameter of the first gear; a parking gear portion, configured to be rotatable around the second gear shaft; a rotation prevention member, configured to be movable between a position where the rotation prevention member is interposed between teeth of the parking gear portion and a position where the rotation prevention member is not interposed between the teeth of the parking gear portion; and a transmission mechanism, configured to transmit a driving force to the rotation prevention member.

Abstract: In one aspect of a motor of the present invention, an inverter housing portion is located on the radially outer side of a stator housing portion. A housing has a tubular circumferential wall surrounding the rotor and the stator on the radially outer side of the rotor and the stator, and is a single member. The circumferential wall has a first cooling flow path, and a partition wall that partitions the stator housing portion and the inverter housing portion. The first cooling flow path extends in the circumferential direction, and at least a part of the first cooling flow path is provided in the partition wall. As viewed along the predetermined direction, a portion of the first cooling flow path provided in the partition wall has a portion overlapping the inverter and a portion overlapping the capacitor.

Abstract: A gearbox and a motor driver having the gearbox are provided. The gearbox includes: a first gear, configured to be rotatable around a first gear shaft parallel to a first direction; a second gear, configured to be rotatable around a second gear shaft parallel to the first gear shaft, and the second gear engages with the first gear, and an outer diameter of the second gear is larger than an outer diameter of the first gear; a parking gear portion, configured to be rotatable around the second gear shaft; a rotation prevention member, configured to be movable between a position where the rotation prevention member is interposed between teeth of the parking gear portion and a position where the rotation prevention member is not interposed between the teeth of the parking gear portion; and a transmission mechanism, configured to transmit a driving force to the rotation prevention member.

Abstract: A motor includes: a housing that accommodates a stator that has a field coil and a rotor; an inverter that is provided in the housing; a voltage boosting circuit that has a reactor provided in the housing; and a coolant flow path that is provided at a position at which the coolant flow path overlaps with the inverter and the voltage boosting circuit in the housing in a diameter direction, and the inverter has a control board that controls a drive current or a drive voltage and a drive element that is provided on the side of the housing with respect to the control board and supplies power to the field coil in accordance with control from the control board.

Abstract: A motor unit includes a motor having a motor shaft disposed along a central axis which extends in an axial direction, and a cooling unit which cools the motor, wherein the cooling unit includes a first suction port configured to suction a first refrigerant which cools the motor, a first discharge port configured to discharge the first refrigerant suctioned from the first suction port, a second suction port configured to suction a second refrigerant which cools the first refrigerant by exchanging heat with the first refrigerant, and a second discharge port configured to discharge the second refrigerant suctioned from the second suction port.

Abstract: The disclosure reduces inconvenience for a driver at the time of operating parking locking, thereby curbing cost reduction and space saving becoming difficult due to additional installation of a drive source for parking locking. The disclosure provides a motor driver mounted on a vehicle, including a rotation prevention arm which can move between a position where it is interposed between teeth of a parking gear portion to prevent rotation of a second gear thereby preventing rotation of each gear in a transaxle and a position where it is not interposed between the teeth, and a transmission mechanism which transmits a driving force of a motor shaft of an electric pump for transferring oil in a housing of the transaxle to the rotation prevention arm.

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 control device includes: a voltage boosting circuit that boosts a power source voltage supplied from an outside; a condenser that smooths a voltage output by the voltage boosting circuit; an inverter circuit that generates a drive voltage of a motor by switching a voltage output by the voltage boosting circuit and smoothed by the condenser; and a control part that causes the voltage boosting circuit to bypass and causes the power source voltage to be supplied to the inverter circuit, and a distance between the voltage boosting circuit and the inverter circuit is a distance with which a parasitic inductance is equal to or less than a predetermined value.

Abstract: Provided is a motor driving unit (1) capable of achieving space saving of a motor room and cost reduction of a vehicle. The motor driving unit (1) includes a motor (10), an inverter (50) that controls driving of the motor (10), and a transaxle (30). The inverter (50) is disposed at a position facing the second gear (32) in the transaxle (30) in a Z-axis direction of the motor (10), and a flow channel of refrigerant arranged inside the inverter (50) is partitioned off from an internal space of the motor (10) by a single barrier.

Abstract: A motor includes a rotor having a motor shaft along a central axis extending in an axial direction; a stator facing the rotor with a gap interposed therebetween in a radial direction; a motor driving inverter unit supplying electric power from a battery to the stator; a charger having a charger inverter unit for charging the battery; and a housing accommodating the stator, the motor driving inverter unit and the charger. The housing has a cooling flow path through which a coolant flows, an inlet port into which the coolant flowing in the cooling flow path flows, and an outlet port from which the coolant flowing in the cooling flow path flows. The motor driving and the charger inverter units are in the housing along the cooling flow path. The motor driving inverter unit is closer to the inlet port side a position where the charger inverter unit is disposed.

Abstract: A motor includes a rotor that has a motor shaft disposed along a central axis extending in an axial direction; a stator facing the rotor with a gap interposed therebetween in a radial direction; a motor driving inverter unit supplying electric power from a battery to the stator; a charger having a charger inverter unit that charges the battery; and a housing accommodating the stator, the motor driving inverter unit and the charger The housing has a cooling flow path through which a coolant flows, a stator accommodation unit accommodating the stator, an inverter accommodation unit positioned outside the stator accommodation unit in the radial direction, a charger accommodation unit positioned outside the stator accommodation unit in the radial direction, and an intermediate partitioning wall partitioning the inverter accommodation unit and the charger accommodation unit The cooling flow path is disposed in the intermediate partitioning wall.

Abstract: A control unit calculates necessary power necessary to drive a motor in accordance with a torque designation value and a rotational speed of a motor, sets a voltage value to a predetermined voltage value, changes a current value in accordance with the necessary power, and drive the motor in a case in which the calculated necessary power is less than a predetermined threshold value, and sets the current value to a predetermined current value, changes the voltage value in accordance with the necessary power, and drives the motor in a case in which the calculated necessary power is equal to or greater than the predetermined threshold value.

Abstract: In one aspect of a motor of the present invention, an inverter housing portion is located on the radially outer side of a stator housing portion. A housing has a tubular circumferential wall surrounding the rotor and the stator on the radially outer side of the rotor and the stator, and is a single member. The circumferential wall has a first cooling flow path, and a partition wall that partitions the stator housing portion and the inverter housing portion. The first cooling flow path extends in the circumferential direction, and at least a part of the first cooling flow path is provided in the partition wall. As viewed along the predetermined direction, a portion of the first cooling flow path provided in the partition wall has a portion overlapping the inverter and a portion overlapping the capacitor.

Abstract: In one aspect of a motor of the present invention, a housing has a stator housing portion and an inverter housing portion, and is a single member. A cover covers an opening on one side in an axial direction of a circumferential wall of a stator housing portion. A rotation detection unit detects the rotation of a rotor and is attached to a motor shaft on the one side in the axial direction of a stator. A speed-reduction device has a speed-reduction mechanism coupled to an end on the one side in the axial direction of the motor shaft and a casing in which the speed-reduction mechanism is housed. The rotation detection unit is covered by the casing from the one side in the axial direction.

Abstract: In one aspect of a motor of the present invention, a housing has a stator housing portion and an inverter housing portion, and is a single member. A rotation detection unit detects the rotation of a rotor. A sensor wiring electrically connects the rotation detection unit and an inverter. The stator housing portion has a bottomed tubular shape having a circumferential wall that is open to one side in the axial direction and a bottom wall that is provided at an end on the other side in the axial direction of the circumferential wall. An output end of a motor shaft of the rotor protrudes from an opening of the circumferential wall toward the one side in the axial direction. The rotation detection unit is arranged on the bottom wall, and the sensor wiring passes through the inside of the bottom wall.

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: The disclosure reduces inconvenience for a driver at the time of operating parking locking, thereby curbing cost reduction and space saving becoming difficult due to additional installation of a drive source for parking locking. The disclosure provides a motor driver mounted on a vehicle, including a rotation prevention arm which can move between a position where it is interposed between teeth of a parking gear portion to prevent rotation of a second gear thereby preventing rotation of each gear in a transaxle and a position where it is not interposed between the teeth, and a transmission mechanism which transmits a driving force of a motor shaft of an electric pump for transferring oil in a housing of the transaxle to the rotation prevention arm.

Abstract: A motor unit includes a motor having a motor shaft disposed along a central axis which extends in an axial direction, and a cooling unit which cools the motor, wherein the cooling unit includes a first suction port configured to suction a first refrigerant which cools the motor, a first discharge port configured to discharge the first refrigerant suctioned from the first suction port, a second suction port configured to suction a second refrigerant which cools the first refrigerant by exchanging heat with the first refrigerant, and a second discharge port configured to discharge the second refrigerant suctioned from the second suction port.

Abstract: A small-sized motor unit capable of cooling an inverter that drives a motor is provided. The motor unit includes: a motor that has a motor shaft disposed along a central axis that extends in an axial direction; a motor driving inverter that drives the motor; a first pump that is attached to the motor and supplies a first refrigerant for cooling the motor to the motor; and a second pump that is attached to the motor driving inverter and supplies a second refrigerant for cooling the motor driving inverter to the motor driving inverter.

Abstract: Provided is a motor driving unit (1) capable of achieving space saving of a motor room and cost reduction of a vehicle. The motor driving unit (1) includes a motor (10), an inverter (50) that controls driving of the motor (10), and a transaxle (30). The inverter (50) is disposed at a position facing the second gear (32) in the transaxle (30) in a Z-axis direction of the motor (10), and a flow channel of refrigerant arranged inside the inverter (50) is partitioned off from an internal space of the motor (10) by a single barrier.