Abstract: An electronic control device including two housings coupled to each other, a first circuit board disposed in one of the two housings, a first terminal disposed on a side of the other of the two housings, and a second terminal disposed on the first circuit board in an opposed relation to the first terminal, wherein the first terminal and the second terminal are brought into direct connection with each other at a time at which the two housings are coupled to each other.

Abstract: Disclosed is a power conversion apparatus that improves the reliability of a redundant system therefor. The power conversion apparatus includes a motor having a cylindrical motor case, a multi-phase stator, and a rotor, a power conversion section that switches the supply of electrical power to the motor, a control circuit board that controls the power conversion section, and a cover made of metal on which the power conversion section and the control circuit board are mounted. The power conversion section includes a first power conversion section and a second power conversion section. The cover includes a protrusion that protrudes toward the motor from a surface substantially parallel to the radial direction of the motor. The protrusion is formed in such a manner as to separate the first and second power conversion sections from each other.

Abstract: An inverter (300) is disposed toward an opening in a motor side metal housing (201). A power module (301) is disposed on a metal cover (207) that is in contact with the metal housing (201). The power module (301) includes a semiconductor element, a metal terminal connected to the semiconductor element, and resin that seals the semiconductor element and the metal terminal. A metal plate (306) is disposed on a surface of the power module (301) that is positioned opposite the metal cover (207). Heat generated by the power module (301) is dissipated from the metal cover (207) and from the metal plate (306). This improves the heat dissipation performance. Thus, the size of the power module can be reduced.

Abstract: An electric power steering apparatus includes an electric motor, a drive torque transmission mechanism for converting a rotation of the electric motor to a linear movement and transmitting the linear movement to vehicle wheels, first and second circuit boards mounting electronic components to process a motor control command and drive the electric motor based on the motor control command, a metal control housing accommodating therein the first and second circuit boards and coupled at an outer surface thereof to the drive torque transmission mechanism, a heat transfer part located inside the control housing so as to receive heat from the respective circuit boards and a heat guide part extending from the outer surface of the control housing to the inside of the heat transfer member so as to guide the heat transferred to the heat transfer part in a direction toward the drive torque transmission mechanism.

Abstract: An inverter is offered which has a substrate having a capacitor, a semiconductor device, and so on mounted thereon, a metal enclosure securely holding the substrate, and a choke coil of an open magnetic path structure. The choke coil has a rod-like core disposed perpendicularly to the substrate. The choke coil is electrically connected with the substrate via coil terminals on a coil element. At least one cutout is formed in a surface of the substrate which is located opposite to one axial end (lower end) of the rod-like core of the choke coil.

Abstract: An electronic control device including two housings coupled to each other, a first circuit board disposed in one of the two housings, a first terminal disposed on a side of the other of the two housings, and a second terminal disposed on the first circuit board in an opposed relation to the first terminal, wherein the first terminal and the second terminal are brought into direct connection with each other at a time at which the two housings are coupled to each other.

Abstract: A motor drive apparatus includes a motor; and an ECU. The ECU includes an ECU housing. The ECU housing includes a heat sink having a module receiving portion. The module receiving portion includes a heat-receiving surface and an opening portion open to one-end side of the ECU housing. The ECU further includes a control substrate received by the ECU housing to be perpendicular to the heat-receiving surface and to face the motor; a plurality of semiconductor modules each received in the module receiving portion and connected electrically with the control substrate to control a power supply of the motor. Each of the plurality of semiconductor modules includes a heat-radiating surface at an outer portion thereof. The ECU further includes a module retaining section pressing the heat-radiating surface to the heat-receiving surface to retain each of the plurality of semiconductor modules in the module receiving portion.

Abstract: An electric power steering apparatus includes an electric motor, a drive torque transmission mechanism for converting a rotation of the electric motor to a linear movement and transmitting the linear movement to vehicle wheels, first and second circuit boards mounting electronic components to process a motor control command and drive the electric motor based on the motor control command, a metal control housing accommodating therein the first and second circuit boards and coupled at an outer surface thereof to the drive torque transmission mechanism, a heat transfer part located inside the control housing so as to receive heat from the respective circuit boards and a heat guide part extending from the outer surface of the control housing to the inside of the heat transfer member so as to guide the heat transferred to the heat transfer part in a direction toward the drive torque transmission mechanism.

Abstract: An electric actuator including a first electric circuit having a first connecting terminal, and a second electric circuit having a second connecting terminal electrically connected with the first connecting terminal, the first connecting terminal including a tip end portion having a rectangular flat plate shape, the second connecting terminal including a pair of elastic contact flaps opposed to each other with a clearance, the clearance having a width between tip end surfaces of the elastic contact flaps which is smaller than a thickness of the first connecting terminal. The first connecting terminal is retained such that the tip end portion thereof is clamped between the tip end surfaces of the elastic contact flaps of the second connecting terminal by an elastic restoring force of the elastic contact flaps.

Abstract: An electronic control device including a plurality of terminal pins each including a first circuit board side connecting portion connected to a first circuit board, a second circuit board side connecting portion connected to a second circuit board, and an intermediate connecting portion disposed between the first and second circuit board side connecting portions and extending in an overlapping direction in which the first and second circuit boards overlap with each other, the intermediate connecting portions being aligned in a row along a predetermined alignment direction, and the terminal pins at least partially including adjacent two terminal pins formed into a bent shape such that the first circuit board side connecting portion of one of the adjacent two terminal pins is offset relative to the first circuit board side connecting portion of the other adjacent two terminal pins in a direction perpendicular to the predetermined alignment direction.

Abstract: A motor drive apparatus includes a motor; and an ECU. The ECU includes an ECU housing. The ECU housing includes a heat sink having a module receiving portion. The module receiving portion includes a heat-receiving surface and an opening portion open to one-end side of the ECU housing. The ECU further includes a control substrate received by the ECU housing to be perpendicular to the heat-receiving surface and to face the motor; a plurality of semiconductor modules each received in the module receiving portion and connected electrically with the control substrate to control a power supply of the motor. Each of the plurality of semiconductor modules includes a heat-radiating surface at an outer portion thereof. The ECU further includes a module retaining section pressing the heat-radiating surface to the heat-receiving surface to retain each of the plurality of semiconductor modules in the module receiving portion.

Abstract: An electric power steering system has an electric motor that is housed in a motor housing having a cylindrical portion and provides a steering assist force to a steering shaft; a control unit that controls the electric motor and has an ECU housing located on an opposite side to an output shaft of the electric motor in an axial direction of the motor housing; a power conversion circuit housed in the ECU housing and having a semiconductor switch for controlling the electric motor; and a control circuit housed in the ECU housing and controlling the semiconductor switch. The electric power steering system also has a conductive member that electrically connects an output terminal of the semiconductor switch and an input terminal of the electric motor. Part of a metal board of the conductive member is contiguous to an inner surface of the motor housing or of the ECU housing.

Abstract: An electronic control device including a plurality of terminal pins each including a first circuit board side connecting portion connected to a first circuit board, a second circuit board side connecting portion connected to a second circuit board, and an intermediate connecting portion disposed between the first and second circuit board side connecting portions and extending in an overlapping direction in which the first and second circuit boards overlap with each other, the intermediate connecting portions being aligned in a row along a predetermined alignment direction, and the terminal pins at least partially including adjacent two terminal pins formed into a bent shape such that the first circuit board side connecting portion of one of the adjacent two terminal pins is offset relative to the first circuit board side connecting portion of the other adjacent two terminal pins in a direction perpendicular to the predetermined alignment direction.

Abstract: A motor drive apparatus includes an assembly of first and second subassemblies. The first subassembly includes a first board and at least one connecting member, such as a bus bar, formed in the first board, and arranged to form a current supply path from a power source to the motor. The second subassembly includes a second board and at least one switching device mounted on the second board. The first and second subassemblies are stacked with an interspace between the first and second boards. A terminal segment of the switching device is connected with a terminal segment of the connecting member.

Abstract: In a cover unit for a fuel tank, a cover section is attached to the fuel tank to cover an opening of the fuel tank; an electronic-circuit containing section contains an electronic circuit; and an electric conductor is attached to penetrate the cover section and is adapted to electrically connect the electronic circuit with an electrical equipment within the fuel tank. Moreover, a vapor passage is formed between the cover section and the electronic-circuit containing section, and is adapted to discharge fuel exuded from a gap between the cover section and the electric conductor, to outside of the fuel tank in a vapor state.

Abstract: A motor drive apparatus includes an assembly of first and second subassemblies. The first subassembly includes a first board and at least one connecting member, such as a bus bar, formed in the first board, and arranged to form a current supply path from a power source to the motor. The second subassembly includes a second board and at least one switching device mounted on the second board. The first and second subassemblies are stacked with an interspace between the first and second boards. A terminal segment of the switching device is connected with a terminal segment of the connecting member.

Abstract: In a cover unit for a fuel tank, a cover section is attached to the fuel tank to cover an opening of the fuel tank; an electronic-circuit containing section contains an electronic circuit; and an electric conductor is attached to penetrate the cover section and is adapted to electrically connect the electronic circuit with an electrical equipment within the fuel tank. Moreover, a vapor passage is formed between the cover section and the electronic-circuit containing section, and is adapted to discharge fuel exuded from a gap between the cover section and the electric conductor, to outside of the fuel tank in a vapor state.