Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Masayoshi Hori

Masaki Ota

Masaru Hamasaki

Hisakazu Kobayashi

Yasunori Makino

Satoshi Koumura

A variable capacity single-headed piston type refrigerant compressor provided with an aluminum-made cam plate rotating with an axial drive shaft to cause reciprocation of a plurality of single-headed pistons within respective cylinder bores, the cam plate further axially moving in parallel with the drive shaft to adjustably change its angle of inclination with respect to a reference plane perpendicular to the axis of rotation of the drive shaft to thereby adjustably vary the capacity of the compressor, the cam plate being further provided with a weight made of iron system material and generating a centrifugal force on the cam plate during the rotation of the cam plate to thereby produce a moment M2 counteracting an unfavorable moment M1 acting on the cam plate due to the high-speed reciprocation of the pistons.

Variable capacity refrigerant compressor with an aluminum cam plate means

A variable displacement compressor includes a simplified hinge mechanism located between a rotary support and a swash plate. The hinge mechanism includes a swing arm extending from the swash plate and a pair of support arms extending from the rotary support such that the swing arm is placed between the support arms. A guide pin is attached to the swing arm. The guide pin has end portions engaging with guide holes of the support arms. Washers are located between the swing arm and the support arms to prevent the swing arm from directly contacting the support arms.

Variable displacement compressor

A variable type compressor has a housing that houses a crank chamber and rotatably supports a drive shaft. Part of the housing is constituted by a cylinder block. Cylinder bores extend through the housing about the drive shaft. A piston is accommodated in each cylinder bore. A discharge chamber is defined in the housing and connected to the crank chamber by a pressurizing passage. An inclinable cam plate is supported on the drive shaft. The reciprocation of each piston draws refrigerant gas into the associated cylinder bore from a suction chamber and discharges the refrigerant gas into the discharge chamber through a discharge port. The displacement and the discharge of refrigerant gas is controlled by altering the inclination of the cam plate. A collection compartment is provided to receive the refrigerant gas discharged from the cylinder bores. Oil is separated from the refrigerant gas in the collection compartment. The inlet of the pressurizing passage is connected with the collection compartment to supply the separated oil to the crank chamber.

A compressor having an oil separator at a shell portion of a housing of the compressor. The oil separator is constructed by a front part 61 integral to a front housing 11 and a rear part 62 integral to a cylinder block 12. The oil separator has an oil separation chamber 1 formed between the front and the rear parts 61 and 62. The oil separator is formed integrally with oil separating passageway forming plates 67 and 68 which partially divide the separation chamber 63 to create a serpentine shaped passageway 66 which extends from an inlet 64a to an outlet 65 of the separation chamber. The passageway 66 is in communication with the crank chamber 15 via a oil return passageway 69 at a location adjacent its outlet.

Swash-plate compressor having a capacity control valve on the oil return

A variable capacity swash-plate-type refrigerant compressor incorporating therein single-headed pistons reciprocating in the cylinder bores to compress refrigerant gas, a drive shaft rotatably supported and driven by an external drive source, a swash-plate element mounted around the drive shaft and rotated by the drive shaft so that the rotation of the swash-plate element causing the reciprocation of the single-headed pistons, and a hinge mechanism arranged between the drive shaft and the swash-plate element to permit the swash-plate element to change its angle of inclination with respect to the axis of rotation of the drive shaft to thereby adjustably change the delivery capacity of the compressor, the swash-plate element being constituted by a swash-plate-body member made of an aluminum alloy material and functioning as a sliding contact member cooperating with the single-headed pistons via shoes, and a guide-bracket member made of an iron based material and functioning as a hinge mechanism forming member. The swash-plate-body member and the guide-bracket member are connected together by press-fitting and prevented, by a rotation-preventing unit, from being relatively rotated against one another.

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Kariya, Japan

Masayoshi Hori