Abstract: Provided is a circuit board capable of dissipating heat at a higher efficiency compared with conventional cases from an electronic component mounted at a high density. A circuit board has a first wiring layer and a second wiring layer, which are laminated on the front surface side of an aluminum base material. The second wiring layer is positioned between the first wiring layer and the base material. The first wiring layer is provided with a land having a BGA placed thereon and connected thereto, said BGA being a terminal of a wafer-level chip-size package. The land is electrically connected to the second wiring layer by means of a via-filling plating formed at a position overlapping the land when viewed from the lamination direction Z. Heat of the wafer-level chip-size package is transmitted to the base material via the land, the via-filling plating, and the second wiring layer, and is dissipated from the base material.

Abstract: A final drive device includes a housing and a final drive gear mechanism. The final drive gear mechanism is provided in the housing, and comprises a drive pinion and a ring gear meshed with the drive pinion and a differential gear mechanism. The differential gear mechanism includes a pinion rotatably supported by a pinion mate shaft, and a pair of side gears meshed with the pinion from both sides in an axle direction. The final drive device has a pinion carrier that is rotated in a direction around the axle integrally with the pinion mate shaft supporting the pinion, and which is secured to the ring gear. The pinion carrier is provided with a pinion housing unit that houses the pinion while permitting the pinion to rotate around its own axis. The side gears are fixedly located relative to the housing while being permitted to rotate around their own axes.

Abstract: A motor may include a rotor; a stator; a first Hall element and a second Hall element which face a drive magnet provided in the rotor at different angular positions, a storage section configured to store reference data prepared by associating a rotation position of the rotor with a signal of the first Hall element obtained at the rotation position and a signal of the second Hall element obtained at the rotation position; and a position detection section configured to obtain a rotation position of a detection target by referring to the reference data based on a first signal and a second signal wherein, when the rotor is located at the rotation position of the detection target, a signal of the first Hall element is referred to as the first signal and a signal of the second Hall element is referred to as the second signal.

Abstract: An optical unit with a shake correction function may include an optical module having a movable body holding an optical element, a support body swingably supporting the movable body around two axial lines perpendicular to an optical axis of the optical element, and a swing drive mechanism structured to be capable of reciprocatedly swinging the movable body with respect to the support body around the two axial lines, and a rolling correction drive mechanism structured to be capable of reciprocatedly turning the optical module around the optical axis. The rolling correction drive mechanism includes a single phase motor in which the number of salient poles of a stator core around which a stator coil is wound is two times of the number of magnetic poles of a rotor magnet.

Abstract: A final drive device includes a housing and a final drive gear mechanism. The final drive gear mechanism is provided in the housing, and comprises a drive pinion and a ring gear meshed with the drive pinion and a differential gear mechanism. The differential gear mechanism includes a pinion rotatably supported by a pinion mate shaft, and a pair of side gears meshed with the pinion from both sides in an axle direction. The final drive device has a pinion carrier that is rotated in a direction around the axle integrally with the pinion mate shaft supporting the pinion, and which is secured to the ring gear. The pinion carrier is provided with a pinion housing unit that houses the pinion while permitting the pinion to rotate around its own axis. The side gears are fixedly located relative to the housing while being permitted to rotate around their own axes.

Abstract: An imaging device may include a movable body having an optical unit, a support body structured to turnably support the movable body around an axial line of an optical axis of the optical unit or around an axial line parallel to the optical axis, and a turning drive mechanism structured to turn the movable body around the axial line. The support body includes a fixing face for fixing the support body to a moving body in a direction perpendicular the axial line.

Abstract: An optical unit with a shake correction function may include an optical module having a movable body holding an optical element, a support body swingably supporting the movable body around two axial lines perpendicular to an optical axis of the optical element, and a swing drive mechanism structured to be capable of reciprocatedly swinging the movable body with respect to the support body around the two axial lines, and a rolling correction drive mechanism structured to be capable of reciprocatedly turning the optical module around the optical axis. The rolling correction drive mechanism includes a single phase motor in which the number of salient poles of a stator core around which a stator coil is wound is two times of the number of magnetic poles of a rotor magnet.

Abstract: A pump device may include a first case provided with a circular ring-shaped protruded part, a second case provided with a circular ring-shaped stepped part into which the circular ring-shaped protruded part is coaxially inserted, an O-ring which is mounted on a circular outer peripheral face of the circular ring-shaped protruded part and is crushed between the circular outer peripheral face of the circular ring-shaped protruded part and a circular inner peripheral face of the circular ring-shaped stepped part in a direction perpendicular to an axial line of the circular ring-shaped protruded part, and a turning prevention mechanism which prevents the first case and the second case from being relatively turned to each other around the axial line when the circular ring-shaped protruded part of the first case is inserted into the circular ring-shaped stepped part of the second case to form the pump chamber.

Abstract: A vortex pump device may include a pump case which forms a pump chamber and a stator accommodating chamber partitioned from the pump chamber, and a wiring outlet part for taking out a wiring line within the pump case to an outer side. The pump case is provided with an outer peripheral wall surrounding an upper space formed on an upper side in the stator accommodating chamber. The wiring outlet part includes a wiring outlet port which is formed by cutting out the outer peripheral wall, a wire placing part on which the wiring line taken out from the wiring outlet port to the outer side is placed, and a fixing member with which the wiring line is sandwiched and fixed between the wire placing part.

Abstract: A pump device may include a first case provided with a circular ring-shaped protruded part, a second case provided with a circular ring-shaped stepped part into which the circular ring-shaped protruded part is coaxially inserted, an O-ring which is mounted on a circular outer peripheral face of the circular ring-shaped protruded part and is crushed between the circular outer peripheral face of the circular ring-shaped protruded part and a circular inner peripheral face of the circular ring-shaped stepped part in a direction perpendicular to an axial line of the circular ring-shaped protruded part, and a turning prevention mechanism which prevents the first case and the second case from being relatively turned to each other around the axial line when the circular ring-shaped protruded part of the first case is inserted into the circular ring-shaped stepped part of the second case to form the pump chamber.

Abstract: A vortex pump device may include a pump case which forms a pump chamber and a stator accommodating chamber partitioned from the pump chamber, and a wiring outlet part for taking out a wiring line within the pump case to an outer side. The pump case is provided with an outer peripheral wall surrounding an upper space formed on an upper side in the stator accommodating chamber. The wiring outlet part includes a wiring outlet port which is formed by cutting out the outer peripheral wall, a wire placing part on which the wiring line taken out from the wiring outlet port to the outer side is placed, and a fixing member with which the wiring line is sandwiched and fixed between the wire placing part.

Abstract: A cascade pump device may include a pump chamber, an impeller, a magnetic drive mechanism structured to rotate the impeller, and a pump case. The pump case is provided with two end faces located at both ends in an axial line direction and an intermediate part between the two end faces. The intermediate part is provided with a suction pipe and a discharge pipe and a wiring outlet part for taking out wiring lines for supplying an exciting current to a drive coil of a motor. The suction pipe and the discharge pipe are protruded in the same direction and the wiring outlet part is provided with a wiring line drawing-out guide part which determines a drawing-out direction of the wiring lines to the outer side. An angle between the drawing-out direction and a protruding direction of the suction pipe and the discharge pipe is less than 90° around the axial line.

Abstract: A pump device may include a stator provided with a stator core having a ring-shaped part on a center side and a drive coil wound around the stator core, and a partition wall disposed configured to separate a pump chamber from the stator. The partition wall is provided with a protruded part in a bottomed tube-like shape which is protruded on an inner side of the ring-shaped part and an outer peripheral face of a tube shaped part structuring the protruded part is formed with a plurality of protruding parts protruding to an outer side in a radial direction. The stator core is fixed to the protruded part in a state that the plurality of the protruding parts is press-fitted to the ring-shaped part.

Abstract: A multi-channel pump includes a pump chamber, an inflow passage connected to the pump chamber, two or more outflow passages connected to the pump chamber, outflow side active valves provided so as to correspond to the outflow passages, and a movable body reciprocated to change a volumetric capacity of the pump chamber. The movable body may be a piston reciprocated within a cylinder that is connected to the pump chamber. A control method for a multi-channel pump includes an initial discharge step between a suction step and a discharge step. The multi-channel pump may be preferably utilized in a fuel cell.

Abstract: A metering pump device capable of performing a fixed amount of discharge with a high accuracy even if a pressure difference occurs between outflow side valves. In the metering pump device, two reciprocating pump devices are used. The end and start of the discharge period of one reciprocating pump device are overlapped with the start and end of the discharge period of the other reciprocating pump device. After the inhalation operation and before the discharge period, both the inflow side valves and the outflow side valves are closed to perform a correction operation for eliminating the pressure difference by increasing or decreasing the internal volumes of the pump chambers.

Abstract: A mixing pump device (1) used for fuel cells etc. has two inflow paths (51, 52), inflow side active valves (21, 22) arranged at the two inflow paths (51, 52), respectively, a pump chamber (11) into which liquids flow via each of two inflow paths (51, 52), four outflow paths (61, 62, 63, 64) for allowing a liquid mixed in the pump chamber (11) to flow out, and outflow side active valves (31, 32, 33, 34) arranged at the four outflow paths (61, 62, 63, 64), respectively. Further, a chamber (82) is formed between the pump chamber (11) and a branch point (80) at which the outflow paths (61, 62, 63, 64) branch off. The construction prevents a variation in the concentration of the liquid allowed to flow out of the outflow paths (61, 62, 63, 64) after the mixing in the pump chamber (11).

Abstract: A mixing pump device (1) used for fuel cells etc. has two inflow paths (51, 52), inflow side active valves (21, 22) arranged at the two inflow paths (51, 52), respectively, a pump chamber (11) into which liquids flow via each of two inflow paths (511, 522), four outflow paths (61, 62, 63, 64) for allowing a liquid mixed in the pump chamber (11) to flow out, and outflow side active valves (31, 32, 33, 34) arranged at the four outflow paths (61, 62, 63, 64), respectively. The inflow paths (511, 522) are opened in the directions where turbulent flow and/or swirl flow is formed in the pump chamber (11). The construction prevents a variation in the concentration of the liquid allowed to flow out of the outflow paths (61, 62, 63, 64) after the mixing in the pump chamber (11).

Abstract: A linear actuator may include a fixed body having a coil wound around in a ring-shaped manner and a movable body. The movable body may include a first movable body side yoke which is disposed on the inner side of the coil and a pair of magnets which is laminated on both sides in an axial direction of the first movable body side yoke such that the same polarities of the magnets face the first movable body side yoke. The movable body may be driven in the axial direction. The linear actuator may be applied to a valve device and a pump device.

Abstract: A pump device may include a main body which may have an inflow passage in communication with an inflow port, an inflow side active valve disposed in the inflow passage, a pump chamber connected to the inflow passage, a pump mechanism disposed in the pump chamber, a plurality of outflow passages extended from the pump chamber and respectively in communication with a plurality of outflow ports, and outflow side active valves respectively disposed in a plurality of the outflow passages, wherein the outflow side active valves are disposed in a plane manner around the pump chamber. The pump may be capable of accurately discharging an appropriate amount of fluid.

Abstract: A linear actuator may include a fixed body having a coil wound around in a ring-shaped manner and a movable body. The movable body may include a first movable body side yoke which is disposed on the inner side of the coil and a pair of magnets which is laminated on both sides in an axial direction of the first movable body side yoke such that the same polarities of the magnets face the first movable body side yoke. The movable body may be driven in the axial direction. The linear actuator may be applied to a valve device and a pump device.