Variable displacement swash plate type compressor

摘要

A fourth pin that slides on a rotary shaft is provided to a swash plate. A guiding surface for guiding the fourth pin is provided to the rotary shaft. The fourth pin is guided by the guiding surface, the swash plate is supported by the rotary shaft via the fourth pin, and a force having a component in a direction orthogonal to the direction of movement of a movable body acting on the swash plate is thereby reduced. Accordingly, there is a reduction in the force, which has a component in a direction orthogonal to the direction of movement of the movable body, acting on a coupling section of the movable body via a third pin from the swash plate. As a result, when the inclination of the swash plate is changed, unwanted tilting of the movable body relative to the direction of movement is suppressed.

主权项

1. A variable displacement swash plate type compressor, wherein:
a cylinder block, which constitutes a housing, has a plurality of cylinder bores; a piston is reciprocally accommodated in each cylinder bore; a crank chamber accommodates a link mechanism and a swash plate; the link mechanism is fixed to a rotary shaft and rotates integrally with the rotary shaft; the swash plate is rotated by a drive force from the rotary shaft via the link mechanism, an inclination angle of the swash plate relative to the rotary shaft is changed; and the pistons are engaged with the swash plate; the compressor comprising: a partition body provided on the rotary shaft; a movable body coupled to the swash plate via a coupling member, wherein the movable body is moved relative to the partition body in an axial direction of the rotary shaft to change the inclination angle of the swash plate; a control pressure chamber defined by the movable body and the partition body, wherein an internal pressure of the control pressure chamber is changed by introducing control gas thereinto, thereby moving the movable body; a sliding portion, which is provided on the swash plate and slides on the rotary shaft; and a guiding surface, which is provided on the rotary shaft and guides the sliding portion, wherein the swash plate is supported by the rotary shaft via the link mechanism, the movable body, and the sliding portion, so that the inclination angle of the swash plate relative to the rotary shaft is determined.