Variable displacement compressor
AssigneeKabushiki Kaisha Toyoda Jidoshokki Seisakusho
InventorsHiroaki Kayukawa, Kazuya Kimura, Kenji Takenaka, Takuya Okuno
Life of this patent
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Abstract
A variable displacement compressor is disclosed having an improved pivotal mounting between its drive plate and the rotary journal that carries the swash plate. The pivotal mounting structure includes a bearing and a pin. The bearing is pivotally mounted on the drive plate. The pin couples the drive plate to the rotary journal. The pin is slidably mounted in a slot in the bearing so that when the bearing and rotary journal pivot, the pin may slide with in the slot. With this arrangement, the point at which a load from the journal is transferred to the drive plate remains substantially fixed regardless of the inclination angle of the journal.
Claims12
A variable displacement compressor comprising:
- a housing including a cylinder block having a plurality of cylinders;
- a plurality of pistons each piston being disposed in an associated cylinder;
- a drive shaft rotatably mounted in the housing;
- a drive plate mounted on the drive shaft such that it rotates integrally with the drive shaft;
- a rotary journal pivotally coupled to the drive plate such that it rotates together with the drive plate;
- a swash plate carried by the rotary journal for reciprocally driving the pistons to compress a fluid;
- a bearing pivotally mounted on the drive plate;
- and
- a pin for coupling the drive plate to the rotary journal, the pin being slidably supported by said bearing when said rotary journal pivots, the pin and bearing being arranged such that a point M.sub.k at which a load generated by a pressure acting against a selected piston in a top dead center position is transferred from the journal to the drive plate remains substantially fixed regardless of the inclination angle of the journal.
A variable displacement compressor comprising:
- a housing including a cylinder block having a plurality of cylinders;
- a plurality of pistons each piston being disposed in an associated cylinder;
- a drive shaft rotatably mounted in the housing;
- a drive plate mounted on the drive shaft such that it rotates integrally with the drive shaft;
- a rotary journal pivotally coupled to the drive plate such that it rotates together with the drive plate;
- a swash plate carried by the rotary journal for reciprocally driving the pistons to compress a fluid;
- a bearing pivotally mounted on the drive plate, the bearing being selected from the group including spherical and cylindrical bearings;
- and
- a pin for coupling the drive plate to the rotary journal, the pin being slidably supported by the bearing, the pin and bearing being arranged such that when the rotary journal pivots with respect to the drive plate, the pin slides linearly in the guide slot and said bearing pivots relative to the drive plate, the pin and bearing being arranged such that a point at which a load from the journal is transferred to the drive plate remains substantially fixed regardless of the inclination angle of the journal.
In a variable displacement compressor having a plurality of pistons disposed in a cylinder block, a rotatable drive shaft, a drive plate mounted on the drive shaft such that it rotates integrally with the drive shaft, a rotary journal pivotally coupled to the drive plate such that it rotates together with the drive plate and a swash plate carried by the rotary journal for reciprocally driving the pistons to compress a fluid, the improvement comprising:
- a bearing pivotally mounted on the drive plate, the bearing having a guide slot;
- and
- a pin for coupling the drive plate to the rotary journal, the pin being slidably supported by the bearing, the pin and bearing being arranged such that when the rotary journal pivots with respect to the drive plate, the pin slides linearly in the guide slot and said bearing pivots relative to the drive plate.
Dependencies are inferred from the claim text.