Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Akihiko Hyodo

Kenji Takenaka

Hiroaki Kayukawa

Masaki Ohta

Shinichi Suzuki

Takashi Okamoto

Mitukane Inagaki

Takashi Mitibata

A thrust bearing assembly of a wobble plate type refrigerant compressor for supporting a non-rotatable inclined wobble plate on a rotatable drive element which rotates with a drive shaft, and having a inclined drive face able to convert a rotating motion of the drive element into a wobbling motion of the wobble plate to thereby cause a reciprocation of compression pistons in cylinder bores, the thrust bearing assembly having a plurality of roller elements, an annular retainer elements holding the roller elements therein and rotating in a space between the drive face of the drive element and an inclined face of the wobble plate confronting the drive face, a pair of race elements attached to the drive and inclined faces of the drive element and the wobble plate to provide raceways for rolling of the roller elements, and a circumferentially extended guide way element supplying the annular retainer elements with a constant slide guide during the operation of the compressor irrespective of a change in the operating speed and compression ratio of the compressor.

Wobble plate type refrigerant compressor having a thrust bearing

A variable capacity wobble plate type compressor with a lubricator for oil-lubricating wobble plate bearings in a crankcase interior, which has an oil dam formed in an entrance of the central bore of a drive plate rotatably mounted on a compressor drive shaft for catching and preserving a lubricating oil scattered by a non-rotary wobble plate during wobbling in the crankcase interior and an oil supply conduit for supplying the preserved oil in the oil dam to the thrust and radial bearings by which the wobble plate is supported on the drive plate.

Apparatus for lubricating wobble plate bearings of a wobble plate type

A variable displacement wobble plate type compressor with a variable angle non-rotary wobble plate, having a suction chamber for refrigerant returning from a refrigerating circuit via an evaporator, a discharge chamber for refrigerant after compression, suction and compression cylinder bores formed in a cylinder block, pistons reciprocating in the cylinder bores, a crankcase attached to the end of the cylinder block and receiving therein a drive and a wobble plate mechanism mounted about a drive shaft connectable to a rotary drive source, connected to the pistons to cause reciprocating motion of the pistons and capable of changing the wobble angle thereof and thereby change the strokes of the pistons, a first passageway for communicating the crankcase interior chamber with a discharge chamber to supply pressure acting as a back-pressure applied to the pistons, a control valve unit for closing and opening the first passageway, a second passageway extending through the drive shaft for communicating the crankcase interior chamber with the suction chamber to enable an extraction of the refrigerant from the crankcase interior chamber into the suction chamber, via a plurality of vent holes formed in and axially separately arranged in the circumference of the drive shaft, an annular sleeve element operatively connected to the drive plate and slidable on the drive shaft to cover a variable number of the plurality of the vent holes thereby changing the amount of extraction of the refrigerant in response to a change in the cooling load.

Variable displacement wobble plate type compressor with a wobble angle

The inclination angle of the wobble plate in a wobble plate type compressor is changed to obtain a discharge capacity in accordance with a cooling load. A spring is provided to adjust the inclination angle of the wobble plate in cooperation with the pressure force acting upon the pistons connected to the wobble plate, and thus the pressure in the suction chamber corresponding to the temperature of the exhausted air is kept at a constant level. That is, the temperature of the exhausted air is kept at a constant level suitable for maintaining a desired cooling condition in a vehicle.

Wobble plate type compressor

A variable displacement wobble plate compressor with a guide unit for a wobble plate, having a cylindrical guide rod axially extending in the compressor in parallel with a compressor drive shaft, a slide slidably and rotatably fitted on the guide rod and provided with lateral pivots on laterally opposite sides thereof which extend in a direction at a right angle to the axis of the guide rod, and a pair of shoes pivotally engaged with the pivots of the slide and slidably received in a radial recess formed in a lowermost portion of the wobble plate. Each of the shoes has a semi-cylindrical outer face complementary with a semi-cylindrical concave wall of the radial recess of the wobble plate so as to permit a relative turning of the wobble plate to the shoes. The slide and shoes may have oil passageways and/or oil grooves.

Growing community of inventors

Kariya, Japan

Akihiko Hyodo