Abstract: 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.

Abstract: A double-headed piston type swash plate compressor includes a swash plate, a double-headed piston, a control pressure chamber, a discharge pressure region, a suction pressure region, a supplying passage, which extends from the discharge pressure region to the control pressure chamber, a narrowing portion, which narrows an opening degree of the supplying passage, and a displacement control valve. The displacement control valve controls a pressure in the control pressure chamber. The displacement control valve includes a driving force transmission rod, a valve chamber, a guide wall, and a back pressure chamber. The back pressure chamber is in communication with the valve chamber through a clearance between the guide wall and the driving force transmission rod. The narrowing portion has a passage cross-sectional area that is larger than a passage cross-sectional area of the clearance.

Abstract: A variable displacement swash plate compressor that includes a cylinder bore, a swash plate chamber, a swash plate, and a double head piston, which defines first and second compression chambers in the cylinder bore. First and second suction chambers are in communication with the first and second compression chambers, respectively. The displacement of the top dead center of the piston in the first compression chamber is greater than the displacement of the top dead center of the piston in the second compression chamber. A first suction passage extends from a suction port to the first suction chamber without passing through the second suction chamber and the swash plate chamber. A second suction passage extends from the first suction chamber to the second suction chamber.

Abstract: A variable displacement swash plate type compressor includes a rotary shaft, a tiltable swash plate, a movable body that is coupled to the swash plate and changes the inclination angle of the swash plate, a link mechanism that permits the inclination angle of the swash plate to be changed, a first support portion provided to the movable body, a second support portion provided to the swash plate, and a first coupling member that couples the first and second support portions to each other. The second support portion is pivotally supported by the first coupling member. The swash plate has top and bottom dead center associated parts for positioning each piston at top and bottom dead centers, respectively. The top and bottom dead center associated parts are arranged with the rotary shaft in between. The second support portion is arranged between the top and bottom dead center associated parts.

Abstract: An inclination angle of a swash plate of a swash plate type variable displacement compressor is rapidly changed to the maximum when electric current is supplied to an electromagnetic solenoid and therefore the compressor is operated at the maximum displacement. When a second valve body is opened, a first valve body is closed; when the second valve body is closed, a valve opening of the first valve body is controlled. Under the circumstance that electric current is supplied to the electromagnetic solenoid and an instruction for operating the compressor at the maximum displacement is issued, when the first valve body is closed, the second valve body is opened. In addition to supply of refrigerant gas from a discharge chamber to a control pressure chamber through a first supply passage, refrigerant gas is supplied from the discharge chamber to the control pressure chamber through a second supply passage.

Abstract: A variable displacement swash plate type compressor includes a housing. The housing includes a first cylinder bore and a second cylinder bore. The second cylinder bore has a smaller diameter than the first cylinder bore. A first thrust bearing is provided between one end side of a drive shaft and the housing so as to receive a thrust force acting on the drive shaft in a direction toward the one end side, and a second thrust bearing is provided between an opposite end side of the drive shaft in a direction toward the opposite end side. A second spring constant of the second thrust bearing is greater than a first spring constant of the first thrust bearing.

Abstract: A variable displacement swash plate compressor is provided with a housing, a drive shaft, a swash plate, a link mechanism, a piston, a conversion mechanism, an actuator, and a control mechanism. The housing includes a suction chamber, a discharge chamber, a swash plate chamber, and a cylinder bore. The actuator includes a movable body coupled to the swash plate, a fixed body fixed to the drive shaft, and a control pressure chamber defined by the movable body and the fixed body. The movable body includes a circumferential wall extending in a direction along a rotational axis and surrounding the fixed body, which includes a guide portion projecting in an axial direction along an inner surface of the circumferential wall. The movable body contacts the guide portion to restrict inclination of the movable body relative to the drive shaft that is greater than or equal to a predetermined amount.

Abstract: A variable displacement swash plate type compressor includes an actuator having a movable body and a control pressure chamber. An acting portion capable of pressing a swash plate by the pressure in the control pressure chamber is formed at the movable body, and an acted portion that abuts on and is pressed by the acting portion is formed at the swash plate. The acting portion abuts on the acted portion at an operative position, which moves in accordance with the change of an inclination angle of the swash plate. A top-dead-center corresponding portion is defined in the swash plate, and the operative position when the inclination angle is maximum is closer to the top-dead-center corresponding portion as compared to the operative position when the inclination angle is minimum.

Abstract: A variable displacement swash plate type compressor includes an actuator. The actuator has a lug member, a movable body that is rotatable integrally with a swash plate and is capable of changing an inclination angle of the swash plate by moving in the direction of an driving axis, and a control pressure chamber that is defined by the lug member and the movable body and moves the movable body by changing its internal pressure by a control mechanism.

Abstract: A double-headed piston type swash plate compressor has a first abutting portion provided between a first housing member and a first cylinder block and a second abutting portion provided between a second housing member and a second cylinder block. The first abutting portion is located inside a first circumcircle of the group of first cylinder bores and causes the first housing member and the first cylinder block to make metal-to-metal contact. The second abutting portion is located inside a second circumcircle of the group of second cylinder bores and causes the second housing member and the second cylinder block to make metal-to-metal contact.

Abstract: A mobile body and a swash plate are coupled to each other via a columnar coupling pin provided on an outer peripheral part of the swash plate. An insertion hole through which the coupling pin is passed is formed in the swash plate. The insertion hole has a guide surface for guiding the coupling pin and for changing the inclination angle of the swash plate following movement of a mobile body to the axial direction of a rotation shaft. The guide surface has a flat surface part which is inclined to a moving direction of the mobile body. The flat surface part is set such that a perpendicular line of the flat surface part and an axial line of the rotation shaft cross in a region surrounded by a sliding part, viewed from a direction orthogonal to both an axial direction of the rotation shaft and a first direction.

Abstract: In a compressor according to the present invention, an actuator is arranged in a swash plate chamber in a manner rotatable integrally with a drive shaft. The actuator includes a rotation body, a movable body, and a control pressure chamber. A control mechanism includes a bleed passage, a supply passage, and a control valve. The control mechanism is capable of changing the pressure in the control pressure chamber to move the movable body. When the pressure in the control pressure chamber exceeds the pressure in the swash plate chamber, the inclination angle of the swash plate with respect to the rotation axis of the drive shaft increases.

Abstract: A compressor includes an actuator. The actuator is arranged in a swash plate chamber, while being rotational integrally with a drive shaft. The actuator includes a rotation body, a movable body, and a control pressure chamber. A control mechanism is provided that changes the pressure in the control pressure chamber to move the movable body. The movable body is arranged such that, when the pressure in the control pressure chamber is raised, the movable body pulls the swash plate to increase the inclination angle of the swash plate.

Abstract: In a compressor according to the present invention, an actuator is arranged in a swash plate chamber in a manner rotatable integrally with a drive shaft. The actuator includes a rotation body, a movable body, and a control pressure chamber. A control mechanism includes a bleed passage, a supply passage, and a control valve. The control mechanism is capable of changing the pressure in the control pressure chamber to move the movable body. The movable body opposes the lug arm with a swash plate arranged between the movable body and the lug arm.

Abstract: A variable displacement swash plate type compressor having high controllability and capable of exhibiting high mounting performance and securing sufficient compression capacity is provided. The compressor of the present invention comprises a first cylinder block and a second cylinder block, and an actuator. The actuator includes an actuator main body and a control pressure chamber. A first cylinder bore and a first storage chamber are formed in the first cylinder block. A second cylinder bore and a second storage chamber are formed in the second cylinder block. The first cylinder bore is formed to have a diameter smaller than the diameter of the second cylinder bore.

Abstract: Provided is a compressor, in which the inclination angle of a swash plate is changed by an actuator, ensuring stability on a product-by-product basis while realizing reduction in size. In the compressor, when pressure in a control pressure chamber increases, a movable body moves toward a flange. At this time, the movable body pulls the opposite end side of a swash plate rearward in a swash plate chamber via first and second pulling arms. A link mechanism permits increase of the inclination angle of the swash plate until reaching a maximum value. When the pressure in the control pressure chamber reaches a required control pressure, a rear wall of the movable body which has moved rearward in the swash plate chamber abuts a front face of the flange. This makes it possible in this compressor to restrict the maximum value of the inclination angle of the swash plate.

Abstract: A variable displacement swash plate compressor includes a housing, drive shaft, first and second radial bearings, swash plate, and actuator. The actuator includes a movable body and fixed body. The movable body includes a main portion and circumferential wall. The main portion includes an insertion hole. The housing includes an accommodation wall. A first clearance exists between the circumferential wall and fixed body. A second clearance exists between the drive shaft and wall of the insertion hole. A third clearance exists between the circumferential wall and accommodation wall. A fourth clearance exists between the drive shaft and first radial bearing. A fifth clearance exists between the drive shaft and second radial bearing. The first and second clearances differ in size. The sum of the third clearance and the smaller one of the first and second clearances is larger than the fourth and fifth clearances.

Abstract: 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.

Abstract: A variable displacement swash plate type compressor includes a rotary shaft, a swash plate, and an actuator, which changes the inclination angle of the swash plate. The actuator includes a partition body and a movable body, which moves in a direction along the rotational axis of the rotary shaft. The movable body includes a guide surface, which changes the inclination angle of the swash plate, and a sliding portion, which slides on the rotary shaft or on the partition body. When viewed from a direction that is perpendicular to the direction in which the rotational axis of the rotary shaft extends and perpendicular to a first direction, the guide surface is configured such that a perpendicular line or a normal line to the guide surface intersects with the rotational axis of the rotary shaft in a zone surrounded by the sliding portion.

Abstract: Provided is a compressor, in which discharge capacity is changed by an actuator, exhibiting high controllability while realizing reduction in size. In the compressor, a movable body includes a rear wall, a circumferential wall, and a coupling mechanism. The coupling mechanism includes a first arm provided with a first pulling point and a second arm provided with a second pulling point. In the compressor, when the inclination angle of a swash plate is increased, the movable body pulls the swash plate via the first and second arms. At this time, in the compressor, pulling force can be applied at two points, i.e., at the first pulling point and the second pulling point. Consequently, in the compressor, even when the size of the rear wall and the circumferential wall is increased, the rigidity of the first and second arms can be made lower.