摘要:
In a swash-plate compressor, pistons are slidably received in cylinder bores. A drive shaft is extended through a crank chamber, and is rotated through an electromagnetic clutch means associated therewith. A conversion mechanism is provided on the shaft for converting a rotational movement of the shaft into a reciprocation of each piston in the corresponding cylinder bore such that a suction stroke and a discharge stroke are alternately executed therein. A fluid is introduced from a suction chamber into the bore during the suction stroke, and during the compression stroke, the fluid is compressed in and discharged from the bore into a discharge chamber. The conversion mechanism is constituted such that a stroke length is shortened in response to an increase of a pressure in the crank chamber, and vice versa. A first passage communicates the crank with the suction chamber, and a second passage communicates the crank chamber with the discharge chamber. A control valve is provided in one of the first or second passage, and is magnetically actuated by the clutch for controlling the pressure in the crank chamber such that the piston stroke can be minimized whenever the clutch is electrically deenergized.
摘要:
A cam plate is mounted on a drive shaft in a crank chamber. A plurality of pistons are operably coupled to the cam plate. The rotation of the drive shaft is converted to a linear reciprocal movement to compress and discharge refrigerant gas containing oil mist. An extracting passage extracts the refrigerant gas from the crank chamber to remove an excessive pressure in the crank chamber. The extracting passage is open to an accommodating chamber which receives the refrigerant gas from the passage. A bearing is disposed in the accommodating chamber and receives an axial load acting on the drive shaft. A bolt absorbs an assembly tolerance of the bearing. A first protuberance is provided on the bearing protruding in a radial direction with respect to the drive shaft so as to become aligned with the passage. The first protuberance engages an inner surface of the accommodating chamber to prevent rotation of the bearing.
摘要:
An improved displacement control valve incorporated in a variable displacement compressor. The control valve is installed in an accommodating hole formed in a rear housing of the compressor. A cap is attached to a housing body of the control valve. A pressure sensing chamber is defined between the cap and the housing body. A pressure sensing member, or bellows, is located in the pressure sensing chamber. The bellows moves a valve body in accordance with pressure introduced into the pressure sensing chamber. A tubular protector, which is made of an elastic material, is attached to the cap. The control valve is installed in the rear housing by inserting the valve, cap first, into the accommodating hole. During this installation, the protector prevents the cap from directly contacting the housing or inner wall of the accommodating hole. The cap is therefore not deformed. The performance of the control valve is therefore improved.
摘要:
A power transmission mechanism having a pulley rotor and a release plate. The pulley rotor is coaxial with the release plate, and power from the pulley rotor is transmitted to the release plate to rotate the pulley rotor and the release plate in the same direction. A spiral spring is located between the pulley rotor and the release plate. The spiral spring is releasably engaged with the pulley rotor. A transmission surface is provided on the pulley rotor to oppose and engage a free end of the spiral spring. The transmission surface transfers power from the pulley rotor to the release plate, and relative rotation between the pulley rotor and the release plate is permitted due to deformation of the spiral spring. A release projection causes the free end of the spiral spring to move and separate from the transmission surface in accordance with relative rotation between the pulley rotor and the release plate when the load applied to the release plate exceeds a predetermined value. Therefore, if the release plate applies an unusually strong load to the pulley rotor, it will be released from the pulley rotor.
摘要:
A capacity control valve for a variable capacity refrigerant compressor for controlling the compressor capacity by adjustably changing a pressure level prevailing in a crank chamber of the compressor, the capacity control valve having a valve mechanism opening and closing a portion of a gas-supply passageway extending between a discharge chamber and the crank chamber of the compressor, and a discharge pressure responsive unit controlling a movement of the valve mechanism in such a manner that only when the discharge pressure of the refrigerant gas is below a predetermined pressure level, does the valve mechanism reduce the opening area of the portion of the gas-supply passageway due to a force provided by the discharge pressure responsive unit in addition to a different force produced by the discharge pressure of the refrigerant gas. The capacity control valve enables the compressor to produce a satisfactory refrigerating performance irrespective of the environmental temperature.
摘要:
Provided is a bipedal walking robot which includes a linear actuator, which connects a crus link and a foot of each leg away from an ankle joint, for driving the foot to rock around the ankle joint with respect to the crus link according to a telescopic motion thereof. The robot is capable of applying a desired moment to the foot for walking on stairs without increasing the linear actuator in size. The linear actuator is disposed in such a way that a telescopic force therefrom acts on a line inclined backward with respect to a connection line connecting a knee joint and the ankle joint. Preferably, a connection portion, which is connected to the crus link, of the linear actuator is disposed backward from the connection line, and a connection portion, which is connected to the foot, of the linear actuator is disposed forward from the connection line.
摘要:
A viscous fluid type heat generator, which shears viscous fluid for generating heat. The heater includes a rotor located in a heating chamber and viscous fluid accommodated in the heating chamber. The rotor is rotated integrally with a drive shaft by a vehicle engine. The rotor includes a boss for attaching the rotor to the drive shaft. The boss has a double-ringed structure for reinforcing the attachment of the boss to the drive shaft.
摘要:
A control valve for a variable displacement compressor. The control valve has a valve body for regulating a gas passage. A bellows actuates the valve body in accordance with an operating pressure introduced to a pressure sensing chamber. A solenoid biases the valve body with a force based on the electric current supplied to the solenoid. A cylindrical cap is fitted to a cylindrical portion provided on a housing of the control valve. The bellows is located in the pressure sensing chamber. The axial position of the cap in relation to the cylindrical portion is adjusted such that the bellows is positioned at a specific initial position when a pressure having a predetermined magnitude is introduced to the pressure sensing chamber and when a current having a predetermined value is supplied to the solenoid. The cap is secured to the cylindrical portion by crimping with the bellows positioned at the initial position.