Abstract: A power conversion device includes a casing, a first printed board, a second printed board, and a control circuit board. The casing has at least two inner surfaces. The first printed board is fixed to the inner surface of the casing. The second printed board is fixed to the inner surface of the casing, and disposed so as to intersect with the first printed board. The control circuit board is disposed along the second printed board. The control circuit board includes a circuit wiring and a shield pattern opposite to the circuit wiring in a layer different from the circuit wiring. When viewed from an opposite direction in which the shield pattern is opposite to the circuit wiring, the shield pattern at least partially overlaps the circuit wiring.

Abstract: A gear structure of a vehicle, which is rotatably provided on a first gear meshing with each other in a rotational direction, and rotates by being pressed by a tooth flank of a second gear when meshed with the second gear, and a sliding member which is connected to the pivoting member so as to be movable in a direction opposite to the rotational direction of the first gear and is pressed by the pivoting member and slides in a direction opposite to the rotational direction, and a protruding member which is rotatably provided along the rotational direction and is pressed by the sliding member and protrudes between the tooth flanks of the second gear.

Abstract: A gear structure of a vehicle, which is rotatably provided on a first gear meshing with each other in a rotational direction, and rotates by being pressed by a tooth flank of a second gear when meshed with the second gear, and a sliding member which is connected to the pivoting member so as to be movable in a direction opposite to the rotational direction of the first gear and is pressed by the pivoting member and slides in a direction opposite to the rotational direction, and a protruding member which is rotatably provided along the rotational direction and is pressed by the sliding member and protrudes between the tooth flanks of the second gear.

Abstract: A power conversion device includes rectifier circuitry that rectifies a first alternating current supplied from a power source and outputs a first current, which is the rectified current, a smoothing capacitor connected between the output terminals of the rectifier circuitry, an inverter including input terminals, converting a second current, which is a current of the first current input to the input terminals, into a second alternating current, and outputting the second current, a snubber capacitor connected between the input terminals in the proximity of the input terminals, and a controller that controls the inverter so that the second alternating current includes pulsation corresponding to pulsation of the second current.

Abstract: A power converter includes: a rectifier that rectifies a first alternating-current power supplied from an alternating-current power supply; a smoother connected to an output end of the rectifier; an inverter that is connected across the smoother, converts a first direct-current power output from the rectifier and the smoother into a second alternating-current power, and outputs the second alternating-current power to a motor; a controller that controls an operation of the inverter such that the second alternating-current power containing pulsation according to pulsation of power flowing into the smoother from the rectifier is output from the inverter to the motor; a DC-DC converter that includes at least one switching element, is connected across the smoother, and converts the first direct-current power into a second direct-current power by causing the switching element to perform switching; and a DC-DC converter controller that causes the switching element to perform switching.

Abstract: A power converter installed in a refrigeration cycle applied equipment includes a rectifier configured to rectify a first alternating-current power supplied from a commercial power supply, a capacitor connected to output ends of the rectifier, an inverter configured to convert power output from the rectifier and the capacitor into a second alternating-current power and to output the second alternating-current power to a motor, and a controller configured to control an operation of the inverter such that the second alternating-current power containing pulsation according to pulsation of power flowing into the capacitor from the rectifier is output from the inverter and to reduce current flowing to the capacitor. The power converter is configured to operate such that the pulsation width of the pulsating current generated by the second alternating-current power is different depending on whether an operation of the refrigeration cycle applied equipment is a cooling operation or a heating operation.

Abstract: A power conversion device includes a casing, a first printed board, a second printed board, and a control circuit board. The casing has at least two inner surfaces. The first printed board is fixed to the inner surface of the casing. The second printed board is fixed to the inner surface of the casing, and disposed so as to intersect with the first printed board. The control circuit board is disposed along the second printed board. The control circuit board includes a circuit wiring and a shield pattern opposite to the circuit wiring in a layer different from the circuit wiring. When viewed from an opposite direction in which the shield pattern is opposite to the circuit wiring, the shield pattern at least partially overlaps the circuit wiring.

Abstract: A phase difference correction control unit determines, based on a difference between a voltage of a first input smoothing capacitor and a voltage of a second input smoothing capacitor, a difference between a current flowing through a first switching element and a current flowing through a second switching element, or a difference between a reactor current when a gate signal of the first switching element is turned on and a reactor current when a gate signal of the second switching element is turned on, an amount of correction of a difference between a phase of switching of the first switching element and a phase of switching of the second switching element. A switching control unit switches the first switching element and the second switching element based on the amount of correction.

Abstract: There is provided a printed circuit board in which an amount of molten solder adhering over electrodes adjacent to each other is increased in flow soldering. The printed circuit board according to the present invention includes: a first insulating substrate (6) having a mounting hole (15) that penetrates through the first insulating substrate (6) from a first surface (6a) to a second surface (6b); a second insulating substrate (18) including a connection portion (23a) that penetrates through the mounting hole (15) from the first surface (6a) side and protrudes from the second surface (6b); first electrodes (7 and 9) that are provided on the second surface (6b) and are arranged at an edge of the mounting hole (15); and second electrodes (19 and 25) provided on the connection portion (23a). The first electrodes (7 and 9) and the second electrodes (19 and 25) are joined by solder.

Abstract: A printed circuit board includes: a first insulating substrate having a mounting hole that penetrates through the first insulating substrate from a first surface to a second surface; a second insulating substrate including a connection portion; a first electrode provided on the second surface and disposed at an edge of the mounting hole; a second electrode provided on the connection portion and joined to the first electrode; and an electronic component provided on the second surface. A center of mass of the second insulating substrate is disposed on the first surface of the first insulating substrate. A center of mass of the electronic component is disposed on the second surface of the first insulating substrate. The electronic component has a weight equivalent to a weight of the second insulating substrate.

Abstract: A printed circuit board assembly includes a first printed circuit board with first surface and second surface with a slit portion and a second printed circuit board with third surface and fourth surface with a first end portion and a second end portion. The first end portion is fitted in the slit portion and a tip of the first end portion protrudes from the second surface. The first printed circuit board includes first electrodes arranged along the slit portion in a longitudinal direction of the slit portion on the second surface. The second printed circuit board includes second electrodes arranged in the first end portion on the third and fourth surfaces. The second electrodes are joined to the first electrodes with solder. The first printed circuit board includes a support fixed to the first surface. The second printed circuit board is attached to the support by an adhesive substance.

Abstract: A phase difference correction control unit determines, based on a difference between a voltage of a first input smoothing capacitor and a voltage of a second input smoothing capacitor, a difference between a current flowing through a first switching element and a current flowing through a second switching element, or a difference between a reactor current when a gate signal of the first switching element is turned on and a reactor current when a gate signal of the second switching element is turned on, an amount of correction of a difference between a phase of switching of the first switching element and a phase of switching of the second switching element. A switching control unit switches the first switching element and the second switching element based on the amount of correction.

Abstract: A printed wiring board includes a main substrate, a standing substrate, a first electrode portion, and a second electrode portion. The second electrode portion is connected to the first electrode portion with solder while a support portion is inserted in a slit. The first electrode portion is provided to reach the slit. The second electrode portion is disposed to span from a bottom surface to a height position higher than or equal to a midpoint between a top surface and the bottom surface.

Abstract: A first substrate has a slit formed therein, passing through the first substrate from one first primary surface to the other first primary surface opposite the one first primary surface, the first substrate including at least one first electrode. A second substrate has one second primary surface and the other second primary surface opposite the one second primary surface, the second substrate: including a support inserted in the slit so as to intersect with the first substrate; and having at least one second electrode on the support. The first electrode and the second electrode are bonded by a solder. A dimension of the slit in the longitudinal direction is greater than the sum of a design dimension of the support in the longitudinal direction, a maximum design dimension tolerance of the support in the longitudinal direction, and a maximum design dimension tolerance of the slit in the longitudinal direction.

Abstract: There is provided a printed circuit board in which an amount of molten solder adhering over electrodes adjacent to each other is increased in flow soldering. The printed circuit board according to the present invention includes: a first insulating substrate (6) having a mounting hole (15) that penetrates through the first insulating substrate (6) from a first surface (6a) to a second surface (6b); a second insulating substrate (18) including a connection portion (23a) that penetrates through the mounting hole (15) from the first surface (6a) side and protrudes from the second surface (6b); first electrodes (7 and 9) that are provided on the second surface (6b) and are arranged at an edge of the mounting hole (15); and second electrodes (19 and 25) provided on the connection portion (23a). The first electrodes (7 and 9) and the second electrodes (19 and 25) are joined by solder.

Abstract: A printed circuit board includes: a first insulating substrate having a mounting hole that penetrates through the first insulating substrate from a first surface to a second surface; a second insulating substrate including a connection portion; a first electrode provided on the second surface and disposed at an edge of the mounting hole; a second electrode provided on the connection portion and joined to the first electrode; and an electronic component provided on the second surface. A center of mass of the second insulating substrate is disposed on the first surface of the first insulating substrate. A center of mass of the electronic component is disposed on the second surface of the first insulating substrate. The electronic component has a weight equivalent to a weight of the second insulating substrate.

Abstract: A printed wiring board includes a main substrate and a rising substrate. A support portion of the rising substrate is inserted into a slit in the main substrate. In a direction in which a plurality of first electrodes are aligned, a width of each of the plurality of first electrodes is larger than a width of each of a plurality of second electrodes, and the width of each of the plurality of second electrodes is arranged to fit within the width of each of the plurality of first electrodes.

Abstract: A fire protection door in an open position is present above a traveling path of a transport vehicle. The fire protection door is capable of moving downward from the open position to a closed position along a door trajectory. The transport vehicle includes: a control portion; an area detection portion that detects an interference area, which is an area in which a portion of the transport vehicle in the traveling path overlaps the door trajectory; and a descent detection portion that detects a descent of the fire protection door. The control portion performs a retraction control such that the transport vehicle travels to the outside of the interference area when the descent detection portion has detected a descent of the fire protection door in a state in which the transport vehicle is located in the interference area.

Abstract: A first substrate has a slit formed therein, passing through the first substrate from one first primary surface to the other first primary surface opposite the one first primary surface, the first substrate including at least one first electrode. A second substrate has one second primary surface and the other second primary surface opposite the one second primary surface, the second substrate: including a support inserted in the slit so as to intersect with the first substrate; and having at least one second electrode on the support. The first electrode and the second electrode are bonded by a solder. A dimension of the slit in the longitudinal direction is greater than the sum of a design dimension of the support in the longitudinal direction, a maximum design dimension tolerance of the support in the longitudinal direction, and a maximum design dimension tolerance of the slit in the longitudinal direction.

Abstract: A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped magnetic pole. Each rotor-side claw-shaped magnetic poles are respectively extending from and formed on each rotor core at equal angle intervals. Tip end surfaces of the first and third rotor-side claw-shaped magnetic pole abut against or are closely opposed to each other axially. Tip end surfaces of the second and fourth rotor-side claw-shaped magnetic poles abut against or are closely opposed to each other in the axial direction. The plurality of field magnets are magnetized in the axial direction such that the field magnets causes the first and third rotor-side claw-shaped magnetic poles to function as first magnetic poles, and cause the second and fourth rotor-side claw-shaped magnetic poles to function as second magnetic poles.