摘要:
A hydraulic device having a first shaft including a first rotor, and a second shaft including a second rotor, the first and second rotors being constructed by adjacently fitting the same shape rotor elements, respectively. The rotor elements have teeth on the outer periphery thereof at a constant interval, and each tooth has a tip portion fluid-tightly engaged with an inner wall of a housing of the device. The rotor elements are adjacently fitted to the shaft in such a manner that the rotor elements are displaced in the same rotational direction along the axial direction of the shaft. The teeth tip portions of the rotor elements adjacent to each other are overlapped so that spiral paths are defined on the outer surface of the rotor.
摘要:
The present invention relates to an improvement in the configuration of the inner face of a housing of a through vane type rotary compressor for use in a car cooler or the like, in which both the top ends of a vane passing through the center of a rotor are always kept in sliding contact with the inner face of the housing.In the present invention, the configuration of the inner face of the housing is determined so that substantial face-to-face contact is produced between the rotor and the housing in a certain region with the point for contact with the rotor being as the center, and the configuration of the subsequent curved portion is defined by such a curve that the velocity of the sliding movement of the vane in the radial direction of the rotor is expressed by a gentle function where said velocity monotonously changes.The through vane type rotary compressor of the present invention is improved over the conventional through vane type rotary compressor in the volumetric efficiency, and the through vane type rotary compressor of the present invention is very excellent in the low-noise and low-vibration characteristics.
摘要:
A multiple-turn scroll compressor has a first scroll member and a second scroll member. Each of the scroll members has a scroll blade which is engaged with the other. A shaft has an eccentric portion which supports the first scroll member. A cylindrical guide is provided rotatably on a housing and has a guide groove at one end. A slider fixed on the first scroll member engages with the guide groove and slides on it. Driving forces are transmitted from the shaft to the first scroll member through the eccentric portion. The first scroll member is prevented from rotating on its own axis by the engagement of the cylindrical guide and slider but not from orbiting.
摘要:
A variable displacement swash-plate type compressor suitable for use as a refrigerant compressor of an automotive air conditioner has a cylinder block having a plurality of cylinder bores each slidably receiving a double-headed piston, a shaft driven by an automotive engine, a swash plate tiltably mounted on the shaft for rotation therewith to reciprocatorily move the pistons, and a spool for moving the swash plate axially of the shaft and changing the angle of tilt of the swash plate. The swash plate and the shaft are connected in such a manner that, when the swash plate is axially moved while changing its tilting angle, the position of stroke end of each piston is changed only in a working chamber on one end of the piston, whereas no change in the position of the stroke end occurs in the other working chamber on the other end of the piston.
摘要:
A compact, piezoelectrically operated pressure modulator for antiskid control of a hydraulic braking system. In its simplest form, the modulator comprises a body in which are formed a main hydraulic passage adapted to connect the master cylinder to a wheel cylinder, and a pressure relief passage for relieving the pressure in the wheel cylinder. The main passage is opened and closed by a normally open shutoff valve operated by a piezoelectric actuator, and the relief passage is controlled by a normally closed shutoff valve operated by an associated piezoelectric actuator. Adjusting mechanisms are provided to adjust the axial position of the piezoelectric elements of the actuators in such a manner that the valve clearance of the shutoff valves is adjusted to an optimal amount.
摘要:
A vane type rotary compressor comprises a cylindrical housing, side plates secured on axial opposite ends of the housing, a rotor rotatably mounted in the housing and a plurality of vanes each slidably received in one of slots formed in the rotor. The housing, side plates, rotor and vanes cooperates with one another to define a working space of a variable volume. The rotor is formed with an increased diameter portion substantially in a central position of the rotor as viewed in an axial direction of the latter. An axial length (L.sub.4) of the increased diameter portion, an axial length (L.sub.3) of the vanes, an axial length (L.sub.2) of the slots, an axial length (L.sub.1) of the housing, distance (L.sub.5) between a forward end of the slots and a forward end of the increased diameter portion, and distance (L.sub.6) between a rear end of the slots and a rear end of the increased diameter portion have the relationships, L.sub.1 >L.sub.3 >L.sub.4, L.sub.2 >L.sub.3, L.sub.3>L.sub.4 +L.sub.5, and L.sub.3 >L.sub.4 +L.sub.6, so as to enable the rotor to rotate without contacting the side plates.
摘要:
A rotary electric machine having a cooling fan comprises a housing of which a front wall has a plurality of air vents. A fan carried and driven by a rotary shaft of the rotary electric machine is arranged near the outer surface of the front end wall of the housing. The fan comprises a disk-shaped fan base plate securely attached to the rotary shaft and a plurality of blades formed by bending by about 90.degree. the peripheral portions of the fan base plate having suitable notches and slots. The width of the blade is gradually reduced from its radially inner edge to its radially outer edge. The front end wall of the housing has a funnel-shaped surface corresponding to the edge of the blade.
摘要:
A rotary compressor including two rotary disc-shaped members having a diameter slightly smaller than that of a rotor each disposed on opposite ends of the rotor and supported on the same rotary shaft as the rotor for rotation, and two disc-shaped recesses each formed on one of inner opposite end surfaces of a housing for receiving therein one of the plurality of rotary disc-shaped members. A small gap is formed between the inner end surfaces of the housing and the end surfaces of the rotor, and small gaps are formed between surfaces of the rotary disc-shaped members and surfaces of the disc-shaped recesses. The area through which a fluid leaks from the high pressure side to the low pressure side in the housing is minimized, and resistance is offered by the tortuous path to the flow of the fluid toward the rotary shaft, to thereby minimize the leakage of fluid during operation of the compressor.
摘要:
Apparatus for detecting collision of a motor vehicle, carried by the vehicle and adapted to produce an electrical signal upon the collision of the vehicle to actuate occupant protection systems. The collision detecting apparatus comprises a rotational member in which the center of gravity is shifted from it's rotational axis so that collision energy applied thereto upon the collision of vehicle is converted into rotational energy of the rotational member, to actuate a contact device for producing the electrical signal. The apparatus is characterized by a simplified and small-sized structure, reliable in operation and generation of the collision signal.
摘要:
A power steering apparatus for a vehicle having a hydraulic mechanism for generating a force applied to a steering mechanism for reducing a force needed to operate a steering member (wheel). A device is provided for determining a condition wherein a yaw rate generated in the vehicle does not match a steering operation of the steering member. A hydraulic or electric torque motor is operated for generating a counter steering force applied to the steering mechanism, to cancel the yaw rate which does not match the operation of the steering member.