Abstract: A work vehicle includes a gear case in which lubricating oil is stored, and a transmission case positioned rearward of the gear case and in which lubricating oil is stored. The work vehicle also includes a communication passage to allow lubricating oil to flow back and forth between the gear case and the transmission case. A rear port, which is in communication with an interior of the transmission case and is for connection to a communication passage, is lower than a front port that is in communication with the interior of the gear case and is for connection to the communication passage.

Abstract: A welding device for a non-circular plate according to an embodiment includes a chuck for gripping and rotatably supporting a plurality of laminated non-circular plates, a welding torch for welding outer peripheral edge portions of the plurality of laminated non-circular plates, a stationary shield box, and a movable shield box which is position-adjustable with respect to the welding torch so as to form a shield space surrounding the welding torch with the stationary shield box.

Abstract: An electric work vehicle includes a harness connecting a front portion of a motor to an inverter, and a positioning mechanism including a first guide portion on one of the motor and a support and a second guide portion on the other of the motor and the support, and configured to position the motor relative to the support as viewed in the front-back direction, by the first guide portion and the second guide portion coming in contact with each other. The positioning mechanism is configured such that, at a time of attaching the motor to the support, the first guide portion is contactable with the second guide portion while a protrusion is forward of a support front surface.

Abstract: A work vehicle includes a gear case in which lubricating oil is stored, and a transmission case positioned rearward of the gear case and in which lubricating oil is stored. The work vehicle also includes a communication passage to allow lubricating oil to flow back and forth between the gear case and the transmission case. A rear port, which is in communication with an interior of the transmission case and is for connection to a communication passage, is lower than a front port that is in communication with the interior of the gear case and is for connection to the communication passage.

Abstract: An electric work vehicle includes a main frame supporting a travel device, and a battery. The electric work vehicle includes a support frame that is attached to the main frame and on which the battery is placed to be supported by the main frame. The electric work vehicle includes a motor operable with power supplied from the battery to drive the travel device, and the motor is suspended by the support frame.

Abstract: An electric work vehicle includes a harness configured to supply power from a battery to a motor and a connector provided at an end portion of the harness and connected to the motor. The electric work vehicle includes a lock movable between a retaining position at which the lock retains a connection between the connector and the motor and a release position at which the lock allows the connector to be separated from the motor. The electric work vehicle includes a restrictor provided on an movement path of the lock between the retaining position and the release position to prevent the lock from being move from the retaining position to the release position, and the restrictor is removable.

Abstract: An electric work vehicle includes a first removable cover to cover a portion of a first harness exposed downward through a first opening, a second removable cover to cover a portion of a second harness exposed downward through a second opening, and a third removable cover to cover a portion of a motor exposed downward through a third opening.

Abstract: An electric work vehicle includes a travel battery, an auxiliary battery, a motor drivable on electric power supplied by the travel battery, a travel device drivable by the motor, a voltage converter positioned forward of the travel battery to step down a voltage of electric power from the travel battery and supply the electric power to the auxiliary battery, and a radiator positioned forward of the travel battery, wherein the voltage converter and the radiator are laterally next to each other in a plan view.

Abstract: A frontend circuit includes a wide-band filter, a transmit filter, and switches. The wide-band filter passes both the receive frequency band of a first communication frequency band and that of a second communication frequency band which is close to or overlaps that of the first communication frequency band. The transmit filter passes the transmit frequency band of the first or second communication frequency band. The switches are capable of simultaneously bringing, into conduction, at least two of multiple filters including the wide-band filter and the transmit filter. In carrier aggregation using the receive frequency bands of the first and second communication frequency bands, the switches simultaneously bring the wide-band filter and the transmit filter into conduction. Thus, in carrier aggregation using signals of multiple communication frequencies simultaneously in communication, attenuation of signals due to signal leakage in two receive frequency bands, which are close to each other, is suppressed.

Abstract: An electric work vehicle includes a work implement, a battery, a motor driven by electric power supplied by the battery, a traveler driven by the motor, a hydraulic pump that is driven by the motor to supply oil to an operating mechanism of the work implement, a transmission to transmit motive power from the motor to the hydraulic pump, and a case that houses the transmission. The case is coupled to the motor, and the hydraulic pump is supported by the case.

Abstract: To improve characteristics of a comparator. A comparator includes first to fifth transistors, first and second switches, and first and second capacitors. The first transistor has a gate to which a reference signal is input. The second transistor shares a source with the first transistor. The third transistor shares a source with the first transistor and shares a drain with the second transistor. The first switch is connected between a gate and the drain of the second transistor. The second switch is connected between a gate and the drain of the third transistor. The first capacitor has a first end connected to the gate of the second transistor and has a second end connected to an input signal terminal. The second capacitor has a first end connected to the gate of the third transistor and has a second end connected to the input signal terminal. The fourth transistor shares a drain with the first transistor and has a gate connected to the drain.

Abstract: An axial gap motor includes: a rotor that rotates about a rotational axis; a stator that faces the rotor in a direction of the rotational axis; a first back yoke provided on either the rotor or the stator; a plurality of teeth protruding from the first back yoke toward one side in the direction of the rotational axis; a plurality of coils mounted on the plurality of teeth; and a connector arranged on a remaining side in the direction of the rotational axis relative to the first back yoke and serving to connect a plurality of lead wires drawn out from the plurality of coils.

Abstract: An axial gap motor includes a rotor that rotates about a rotational axis, a stator that faces the rotor in a direction of the rotational axis, a back yoke provided on the rotor, and a plurality of magnets arranged on the back yoke along a circumferential direction around the rotational axis. The plurality of magnets include a plurality of first magnets arranged at an equal angular interval in the circumferential direction and a plurality of second magnets each arranged between the plurality of first magnets and arranged at a position shifted by a predetermined shift angle ?1 from a center angle of two adjacent first magnets in the circumferential direction.

Abstract: There is provided an electronic device including a switching element unit that applies a voltage based on a direct-current power supply to one end of an electroacoustic converter in response to a first pulse signal and applies a voltage based on the direct-current power supply to another end of the electroacoustic converter in response to a second pulse signal, and a delay circuit that generates a delay based on a communication frequency in at least one of the first pulse signal and the second pulse signal.

Abstract: An electric work vehicle includes a work implement, a battery, a motor driven by electric power supplied by the battery, a traveler driven by the motor, a hydraulic pump that is driven by the motor to supply oil to an operating mechanism of the work implement, a transmission to transmit motive power from the motor to the hydraulic pump, and a case that houses the transmission. The case is coupled to the motor, and the hydraulic pump is supported by the case.

Abstract: A method of producing a plate laminate unit for a heat exchanger includes: a compressing step of compressing a plate laminate, a pair of terminal plates disposed on both sides of the plate laminate in a laminating direction, and a pair of binding plates disposed on both sides of the pair of terminal plates in the laminating direction, using a pressing tool from both sides in the laminating direction; a welding step of welding an edge portion of the plate laminate to edge portions of the pair of terminal plates during the compressing step; a connecting step of connecting the pair of binding plates to each other by a connector after the welding step; and a pressure-releasing step of detaching the pressing tool after the connecting step.

Abstract: A welding device for a plate laminated body according to an embodiment includes a welding torch, a chuck for gripping a plurality of laminated plates with a lamination direction being in a horizontal position, and at least one support extending along the lamination direction for supporting the plate laminated body from below.

Abstract: An electric work vehicle includes a work implement, a battery, a motor driven by electric power supplied by the battery, a traveler driven by the motor, a hydraulic pump that is driven by the motor to supply oil to an operating mechanism of the work implement, a transmission to transmit motive power from the motor to the hydraulic pump, and a case that houses the transmission. The case is coupled to the motor, and the hydraulic pump his supported by the case.

Abstract: An electric work vehicle includes a travel battery, an auxiliary battery, a motor drivable on electric power supplied by the travel battery, a travel device drivable by the motor, a voltage converter positioned forward of the travel battery to step down a voltage of electric power from the travel battery and supply the electric power to the auxiliary battery, and a radiator positioned forward of the travel battery, wherein the voltage converter and the radiator are laterally next to each other in a plan view.

Abstract: An electric work vehicle includes a first removable cover to cover a portion of a first harness exposed downward through a first opening, a second removable cover to cover a portion of a second harness exposed downward through a second opening, and a third removable cover to cover a portion of a motor exposed downward through a third opening.