Abstract: An ECU attached to a motor assembly has a substrate and a heat sink. The substrate mounts thereon a microcomputer, which controls driving of a motor in accordance with a rotation angle of the motor. The substrate is fixed to the heat sink. The substrate has a first through hole group and a second through hole group, which are through holes connectable electrically by soldering to rotation angle signal wires connected to a rotation angle sensor, which detects a rotation angle of the motor.

Abstract: In an ECU attached to a motor assembly, inverter FETs, which generate outputs for driving a motor, are electrically connected to a substrate. A plurality of screw holes is formed in a heat sink thereby to fix the substrate. A resin member is provided between the heat sink and the substrate and has a plurality of motor terminals and a resin mold, which integrally fix the motor terminals by molding the motor terminals. The motor terminal has an embedded part, a L-shaped substrate-side exposed part and a motor-side exposed side including a curbed part. The resin member and the substrate are tightened together and fixed to the heat sink.

Abstract: A motor has a motor body and a control unit, which is joined to the motor body. A resolver is connected to the control unit through a flat cable. The flat cable is arranged such that the width direction of the flat cable corresponds with a circumferential direction of the motor body. The flat cable extends outwardly in a radial direction of the motor case.

Abstract: In a motor drive apparatus for driving a three-phase AC motor, a first mounting part of a heat sink is formed along an end. A second mounting part is formed in a direction perpendicular to the first mounting part and includes a first column part and a second column part. Three motor relay FETs are mounted on the first mounting part. Six inverter FETs and two power relay FETs are mounted on the second mounting part. Leads of the FETs are electrically connected to an electric circuit substrate. Heat generated by the FETs is radiated to the heat sink through an insulating and heat radiating sheet. By thus arranging the FETs, the motor drive apparatus is reduced in size.

Abstract: A motor body has feeder terminals. Connecting ends of the corresponding feeder terminals are exposed radially outward from a motor case. The motor body has an end frame having an attachment portion. In this configuration, a control unit is fixed to the attachment portion and connecting terminals of the control unit are arranged to be allowed to contact the corresponding connecting ends. By fastening the fastening screws at positions radially outward of the motor case, the connecting terminals of the control unit are connected to the connecting ends of the motor body.

Abstract: In an electric power steering system, a drain terminal side of a semiconductor relay is positioned to face a heat sink through an insulation film layer. The semiconductor relay has a source terminal between a gate terminal and a drain terminal. The source terminal is provided between the gate terminal and the drain terminal with respect to parts of the gate terminal, the drain terminal and the source terminal, which extend generally in parallel each other on the same plane.

Abstract: A motor drive apparatus includes a heat sink, on which a power module is disposed. A control circuit board and a power circuit board are disposed on axially opposite sides of the heat sink. A component carrier is disposed close to the power circuit board at a side opposite to an output part of a motor case. An electric connector is extended from the component carrier, passed through a hole of a cover and extended to an outside opposite to the output part. Even in a case where a mounting space is limited in a radial direction of the motor case, the electric connector can be easily connected to an external connector of a vehicle.

Abstract: An ECU attached to a motor assembly has a substrate and a heat sink. The substrate mounts thereon a microcomputer, which controls driving of a motor in accordance with a rotation angle of the motor. The substrate is fixed to the heat sink. The substrate has a first through hole group and a second through hole group, which are through holes connectable electrically by soldering to rotation angle signal wires connected to a rotation angle sensor, which detects a rotation angle of the motor.

Abstract: In an ECU attached to a motor assembly, inverter FETs, which generate outputs for driving a motor, are electrically connected to a substrate. A plurality of screw holes is formed in a heat sink thereby to fix the substrate. A resin member is provided between the heat sink and the substrate and has a plurality of motor terminals and a resin mold, which integrally fix the motor terminals by molding the motor terminals. The motor terminal has an embedded part, a L-shaped substrate-side exposed part and a motor-side exposed side including a curbed part. The resin member and the substrate are tightened together and fixed to the heat sink.

Abstract: In a motor drive apparatus for driving a three-phase AC motor, a first mounting part of a heat sink is formed along an end. A second mounting part is formed in a direction perpendicular to the first mounting part and includes a first column part and a second column part. Three motor relay FETs are mounted on the first mounting part. Six inverter FETs and two power relay FETs are mounted on the second mounting part. Leads of the FETs are electrically connected to an electric circuit substrate. Heat generated by the FETs is radiated to the heat sink through an insulating and heat radiating sheet. By thus arranging the FETs, the motor drive apparatus is reduced in size.

Abstract: A motor body has feeder terminals. Connecting ends of the corresponding feeder terminals are exposed radially outward from a motor case. The motor body has an end frame having an attachment portion. In this configuration, a control unit is fixed to the attachment portion and connecting terminals of the control unit are arranged to be allowed to contact the corresponding connecting ends. By fastening the fastening screws at positions radially outward of the motor case, the connecting terminals of the control unit are connected to the connecting ends of the motor body.

Abstract: A motor has a motor body and a control unit, which is joined to the motor body. A resolver is connected to the control unit through a flat cable. The flat cable is arranged such that the width direction of the flat cable corresponds with a circumferential direction of the motor body. The flat cable extends outwardly in a radial direction of the motor case.

Abstract: A connector fixation structure includes: a connector having a rectangular connector body, protrusions protruding from facing sides in a wing like manner, and a terminal embedded in and protruding from the connector body; a heat sink having a plate shape body, a through hole and columnar convexities; and a printed board. The bottom of the connector is inserted into the through hole of the heat sink. Each columnar convexity is disposed on the plate shape body at a predetermined position corresponding to the protrusion. The top of the connector contacts a first surface of the printed board, and each columnar convexity is fixed to the printed board via the corresponding protrusion with a first screw.

Abstract: In an electric power steering system, a drain terminal side of a semiconductor relay is positioned to face a heat sink through an insulation film layer. The semiconductor relay has a source terminal between a gate terminal and a drain terminal. The source terminal is provided between the gate terminal and the drain terminal with respect to parts of the gate terminal, the drain terminal and the source terminal, which extend generally in parallel each other on the same plane.

Abstract: A connector fixation structure includes: a connector having a rectangular connector body, protrusions protruding from facing sides in a wing like manner, and a terminal embedded in and protruding from the connector body; a heat sink having a plate shape body, a through hole and columnar convexities; and a printed board. The bottom of the connector is inserted into the through hole of the heat sink. Each columnar convexity is disposed on the plate shape body at a predetermined position corresponding to the protrusion. The top of the connector contacts a first surface of the printed board, and each columnar convexity is fixed to the printed board via the corresponding protrusion with a first screw.

Abstract: An electronic control unit for producing a sufficiently boosted voltage even when a supply voltage becomes high includes an inverter that drives switching elements and converts a DC voltage into an AC voltage, and booster means which boosts a DC voltage that is input into a voltage to lie within a voltage range in which a voltage necessary for driving the switching elements is a lower-limit value and a maximum boosted voltage is an upper-limit value, and outputs the boosted voltage to the inverter.

Abstract: An electronic control unit for producing a sufficiently boosted voltage even when a supply voltage becomes high includes an inverter that drives switching elements and converts a DC voltage into an AC voltage, and booster means which boosts a DC voltage that is input into a voltage to lie within a voltage range in which a voltage necessary for driving the switching elements is a lower-limit value and a maximum boosted voltage is an upper-limit value, and outputs the boosted voltage to the inverter.

Abstract: An apparatus for detecting the concentration of particles in a liquid includes a light-emitting portion for emitting examination light which is totally reflected-by a boundary surface contiguous to the liquid to be examined, a photosensor for receiving the totally-reflected light, a reference sensor for directly receiving the examination light, and a judgment portion for finding the reflectance from outputs of the two sensors to compute the particle concentration. In case that the liquid to be examined is lubricating oil of an engine, the concentration of carbon particles is calculated, thereby judging the deterioration of the lubricating oil.

Abstract: In an apparatus for detecting a property of a liquid, light is emitted from a light emitting element towards an interface between a liquid to be measured and a prism in an interface channel. Reflected light from the interface is received by a light receiving device, and a refractive index of the liquid is obtained from the total reflection critical angle. A cleaning member capable of contacting the interface by the flow of the liquid is provided. The cleaning member may be a small body or a floating member, a tape/string member having one end fixed to a channel wall, or a wiper swingable by the flow of the liquid.