摘要:
A high-efficiency magnetic inductor rotary machine in which eddy current loss is reduced even if driven at super-high-speed rotation, and a fluid transfer apparatus that uses the same. In the magnetic inductor rotary machines, first and second stator cores are disposed coaxially such that circumferential positions of teeth are aligned, and first and second rotor cores are fixed coaxially to a rotating shaft such that salient poles are offset by a pitch of half a salient pole circumferentially, and are disposed on an inner peripheral side of the first and second stator cores. A salient pole width of the salient poles of the first and second rotor cores is configured so as to be greater than an opening width of slots of a stator.
摘要:
A power supply motor brushes 25 for a current carrying device is arranged in a sensor power supplying unit 21 with a sensor. This allows connecting terminals 5 of the sensor power supplying unit 1 and receiving connectors 7 of a DC motor unit 6, which are arranged in proximity to motor brushes 9 of the DC motor unit 6 and which are connected to the connecting terminals 5, to be dispensed with. These components are required in a conventional device in order to supply a current from a power supply terminal 2 to the motor brushes 9.
摘要:
As a motor is rotationally driven, a valve stem is reciprocally displaced to open or close a flow passage formed in a housing for a high temperature fluid. The motor is held via a bracket where inner surface is concavely recessed contour, and the bracket has a predetermined height and a plurality of openings are formed on the wall surface of the bracket. The housing and the bracket are made integral with each other, and supporting portions formed between adjacent openings are dimensioned to have a smallest cross sectional size necessary from the viewpoint of a strength. With this construction, an efficiency for performing an assembling operation for a motor driven type flow rate controlling valve can be improved, and moreover, a quantity of heat to be conducted from the bracket to the motor side can be reduced.
摘要:
An exhaust gas recirculation valve comprises a housing which constructs a part of an exhaust gas path for receiving exhaust gas from an exhaust pipe of an internal combustion engine, the housing accommodating a valve mechanism for controlling the amount of flow of the exhaust gas passing therethrough, a fixed cylinder disposed in the housing, a movable cylinder assembly composed of at least one movable cylinder disposed in the fixed cylinder, a piston movably disposed in the movable cylinder assembly for controlling an opening of the valve mechanism, and a pressure applying mechanism for respectively applying pressure to the movable cylinder and the piston so as to move them through respective predetermined strokes. The exhaust gas recirculation valve can control its opening to one of a plurality of opening levels by moving the movable cylinder and piston through the respective predetermined strokes by means of the application of the pressure of air by the pressure applying mechanism, so as to provide a needed opening with reliability. Furthermore, by shortening the predetermined strokes of the movable components, there is provided the exhaust gas recirculation valve insensitive to a change in the pressure of air supplied by the pressure applying mechanism.
摘要:
A flow quantity valve controller includes a unit for positioning so that a phase of a stepper motor becomes a predetermined phase when a motor shaft making a linear move with rotation of the stepper motor is pulled most into the stepper motor side. When the motor shaft is pulled most into the stepper motor side, a flow quantity valve controller changes a stepper motor drive signal to a drive signal corresponding to a predetermined phase.
摘要:
A motor rotor structure for an electric turbo charger is manufactured at low cost with good quality by fixedly fitting, over a shaft, a rotor core having electromagnetic steel sheets pre-formed as an integrated stack. The rotor structure includes a rotor core which is rotated by a magnetic field formed by a stator in a housing; a shaft configured to rotate a compressor impeller and the rotor core together; and a bearing supporting the shaft. The rotor includes the rotor core including the electromagnetic steel sheets; a stopper portion formed at an intermediate portion of the shaft to restrict axial movement of the rotor core; and a pressing unit which presses the rotor core fitted over the shaft against the stopper portion. The pressing unit prevents a circumferential phase shift between the shaft and the rotor core by a pressing force thereof.
摘要:
In a rotary electric motor a first stator core and a second stator core are disposed coaxially so as to be separated by a predetermined distance axially and such that circumferential positions of teeth are aligned, and a first rotor core and a second rotor core on which salient poles are disposed at a uniform angular pitch circumferentially are fixed coaxially to a rotating shaft so as to be positioned on inner peripheral sides of the first stator core and the second stator core, respectively, and so as to be offset circumferentially by a pitch of half a salient pole from each other. A first permanent magnet that is magnetically oriented such that a direction of magnetization is radially inward is disposed on an outer peripheral surface of a core back of the first stator core, and an outer peripheral surface of the first permanent magnet and the outer peripheral surface of the core back of the second stator core are linked by a frame that is made of a magnetic material.
摘要:
A motor positioning structure is constructed by providing a plurality of positioning pins 28, 29 for positioning a circuit board 22 on a case 21 of a circuit main body 3 and also providing receiving holes 35, 36 for receiving the positioning pins 28, 29 in a frame 4 on the side of a stator in a motor main body 2.
摘要:
An actuator having an output axis which is moved linearly by a rotatory force, and a boss for holding the above-mentioned output axis in such a way that the output axis can move linearly includes a connecting member for propagating the linear motion of the above-mentioned output axis to an external device. The above-mentioned connecting member is comprised of a joint connected to the above-mentioned output axis, and a link plate having an end rotatably connected to the above-mentioned joint, and another end rotatably connected to the external device. A mechanism for preventing rotation of the above-mentioned output axis is constructed of only a connecting portion for connecting the above-mentioned joint, the above-mentioned link plate, and the above-mentioned external device to one another.