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    • 15. 实用新型
    • JPH0489873U
    • 1992-08-05
    • JP40338490
    • 1990-12-15
    • B62D25/08F04B27/14G02F1/35F04B27/10F04B27/16F04B27/18H01S5/00H01S5/10H01S5/12H01S5/125H01S5/20H01S5/50F04B27/08
    • A slant plate type compressor (10) with a variable displacement mechanism is disclosed. The compressor (10) includes a drive mechanism having a drive shaft (26) rotatably supported in a compressor housing (20) and a coupling mechanism for drivingly coupling the drive shaft to pistons such that rotary motion of the drive shaft is converted into reciprocating motion of the pistons (71). The coupling mechanism includes a slant plate having an inclined surface. The slant angle changes in response to the change in pressure in a crank chamber to change the capacity of the compressor. The drive shaft includes an inner end portion (26a) of which diameter is smaller than a diameter of the remainder of the drive shaft (26). A bias spring (34) of which outer diameter is greater than a diameter of the remainder of the drive shaft is resiliently mounted on the inner end portion (26a) of the drive shaft (26) between the slant plate and the cylinder block to restore the slant plate back to a maximum slant angle when the slant angle is decreased to below a predetermined angle without interference with free pivoting motion of the slant plate between various inclination angles. Thereby, the impact force acting on the internal component parts of the compressor at the time when the operation of the compressor is restarted can be reduced, while the bias spring (34) can sufficiently urge the slant plate toward the maximum slant angle if the slant angle decreases to below the predetermined slant angle.
    • 16. 发明专利
    • DISPLACEMENT CHANGING DEVICE FOR SWASH PLATE COMPRESSOR
    • JPH03225082A
    • 1991-10-04
    • JP2137690
    • 1990-01-31
    • ZEXEL CORP
    • NAKAJIMA NOBUFUMI
    • F04B25/04F04B27/08F04B27/14F04B27/16
    • PURPOSE:To change displacement continuously with simple structure by switching a communicating passage between a swash plate chamber and an intake chamber according to heat load, and communicating a chamber, located between the tip part and body part of a piston reciprocated by the rotation of a swash plate, with the swash plate chamber. CONSTITUTION:When intake pressure becomes lower than the specified value with the change of heat load, switching valve mechanism 24 is placed in the valve closed state, and passing through a gap between the outer peripheral surface of a piston tip part 12a and the inner peripheral surface of a cylinder bore 11, a blow-by gas flows into a chamber 18 from a compression chamber 27 and shut up in the chamber 18 and a swash plate chamber 13, resulting in pressure rising. At the time of an intake stroke, a piston 12 is moved together with a swash plate 8 to start intake, but because of the pressure in the chamber 18 being larger than that in the compression chamber 27, the piston tip part 12a stops after a slight stroke, and thereby the intake quantity is reduced in large degree. At the time of a compression stroke, the piston tip part 1a is not moved until being hit by a piston body 12b, and thereby the stroke quantity of the piston 12 is reduced to result in displacement decrease. Whereas, at the time of the intake pressure being over the specified value, the displacement is increased.