Abstract: A gas compressor is configured such that a suction-side area that is in sliding contact with the inner circumferential surface of a cylinder chamber when a compression chamber is in the suction stroke has a larger radius of curvature than that of a compression-side area that is in sliding contact with the inner circumferential surface of the cylinder chamber when the compression chamber is in the compression stroke.

Abstract: An electric compressor and a method for assembling the same include: an electric motor unit including a stator fixed to a housing by a press-fitting to an inner peripheral wall of the housing and a rotor rotatably arranged inside the stator; a compression unit configured to be driven by a rotational drive force of the electric motor unit and compress a coolant; and a guide member attached to an outer periphery of the stator and having a guiding curved surface portion configured to guide the press-fitting of the stator to the inner peripheral wall of the housing.

Abstract: A rotor of a vane compressor includes vanes that reciprocates in vane slots, coil springs that urge the vanes, and guide members each having a press-in end pressed into the vane and an accommodated end and inserted into the coil spring. When an outer diameter of the guide member is a, an inner diameter of the coil spring is b1, an outer diameter thereof is b2, and an inner diameter an accommodation hole for the coil spring is c, (b1?a)<(c?b2) is satisfied. A diameter of an end (a first contact portion) of the coil spring on a side of the accommodated end is larger than a diameter of another end (a second contact portion) thereof on a side of the press-in end. According to the compressor, contacts between the accommodation hole and the guide member can be prevented without high accuracy forming of the accommodation hole.

Abstract: Provided is an electric compressor (1), which drives, in a cylindrical housing (2), a compressor (4) using an electric motor (3) disposed in the housing (2). The electric compressor is characterized in that the electric motor (3) is formed with a stator (7), which is fixed to the housing (2), and which generates a magnetic force when a current is carried, and a rotor (9), which is rotatably disposed inside of the stator (7), and which rotates with the magnetic force generated by the stator (7). The electric compressor is also characterized in that the stator (7) is press-fitted in a cylindrical body (6) composed of a material having a linear expansion coefficient close to that of the stator (7), and that the cylindrical body (6) is partially press-fitted at a plurality of areas in the inner wall (10) of the housing (2).

Abstract: A variable capacity compressor includes a rotating member 21 fixed to a drive shaft 10 so as to rotate with the drive shaft 10, a sleeve 22 axially slidably attached to the drive shaft 10, a tilting member 24 tiltably attached to the sleeve 22 by a pivot pin 61, a linkage mechanism 40 connecting the rotating member 21 with the tilting member 24 and configured to transfer a rotary torque of the rotating member 21 to the tilting member 24 as allowing the tilting member to be tiltable, and a tilting guide face 22c formed on the sleeve 22 and a tilting guide face 25d formed on the tilting member 24 which are formed as planes orthogonal to the pivot pin 61 and are configured to slidingly contact one another.

Abstract: A variable capacity compressor includes: cylinder bores; a drive shaft; a rotor fixed with the drive shaft; a link for linking the rotor and a journal; a tilting plate capable of changing its tilted angle; and pistons capable of reciprocating within the cylinder bores along with a rotation of the tilting plate. Each reciprocating stroke of the pistons is adjusted according to the tilted angle of the tilting plate. The link is linked with the rotor via a first pivot and linked with the journal via a second pivot. An arrangement of the first and second pivot is set so that each head clearance of the pistons decreases as a discharge capacity decreases toward its minimum value within a small discharge capacity range. According to the compressor, it can be prevented that the discharge flaw amount is cut off abruptly and the tilted angle can be sustained stably.

Abstract: A linkage mechanism (40, 40B, 40C) includes a pair of arms (41, 41) extending from a rotating member (21) toward a tilting member (24), a pair of arms (43, 43) extending from the tilting member (25) toward the rotating member (21), and a link (45) inserted between the pair of arms (41, 41) of the rotating member and between the pair of arms (43, 43) of the tilting member.

Abstract: The present invention provides a hybrid compressor system in which its configuration is simplified, its cost and size are reduced, and its reliability is enhanced. In the hybrid compressor system which selectively transmits a driving force of an engine and a driving force of a motor being mounted on a vehicle to a compressor of a vehicle air conditioning device to drive the compressor, the motor is provided with a one-way clutch which selectively transmits the driving force of the motor to the compressor 1.

Abstract: The present invention provides a hybrid compressor system in which its configuration is simplified, its cost and size are reduced, and its reliability is enhanced. In the hybrid compressor system which selectively transmits a driving force of an engine and a driving force of a motor being mounted on a vehicle to a compressor of a vehicle air conditioning device to drive the compressor, the motor is provided with a one-way clutch which selectively transmits the driving force of the motor to the compressor 1.

Abstract: In a swash plate type compressor comprising a piston 4 slidably received in a cylinder bore disposed parallel with the driving shaft and a swash plate 2 obliquely attached to the driving shaft and engaged by the piston 4 through a bearing device, the bearing device comprises a spherical seat 4b composed of a single concave surface formed in the piston 4, and a substantially hemispherical shoe 10 contacting the spherical seat 4b, the outer peripheral surface of the shoe 10 being composed of a skirt portion 12, a top portion 16 having a larger radius of curvature, R2, than that R of the spherical seat 4b, and a transition portion 14 contacting the spherical seat 4b between the skirt portion 12 and the top portion 16 and having a smaller radius of curvature, R3, than that R of the spherical seat 4b.

Abstract: A swash plate type compressor comprises a case; a drive shaft rotatably installed in the case; a drive plate fixed to the drive shaft to rotate therewith; a sleeve axially slidably disposed on the drive shaft; a journal pivotally mounted on the sleeve; a swash plate disposed on the journal to move therewith; and a transmission/hinge mechanism arranged between the drive plate and the journal to transmit the rotation of the drive shaft to the journal permitting the pivotal movement of the journal relative to said sleeve. The transmission/hinge mechanism includes a first arm projected from the drive plate and having an elongate through hole; two spaced second arms projected from the journal, the second arms being so spaced as to intimately put therebetween the first arm, the second arms having cylindrical bores which are aligned; and a pin including a middle portion slidably received in the elongate through hole and axially opposed end portions press-fitted in the cylindrical bores of the second arms.

Abstract: A swash plate type compressor has a rotating assembly of a drive shaft, a drive plate mounted on the drive shaft and a swash plate unit linked with the drive plate through a hinge mechanism. The drive plate has a circular disk portion and a hinge supporting portion projecting from the disk portion. The drive plate is formed with an oil storage groove for improve lubrication and balance of the rotating assembly. The oil storage groove opens away from the swash plate unit, and extends so as to describe an arc of a circle at such a position that the oil storage groove extends between the axis of the drive shaft and the hinge supporting portion.

Abstract: A swash plate type compressor for refrigerant in a refrigeration cycle of an air conditioning system for an automotive vehicle. The compressor comprises a cylinder block having a plurality of cylinder bores. A plurality of pistons are provided to be respectively fitted in the cylinder bores, each piston making a linear movement under action of a swash plate which is rotatable with a drive shaft. Additionally, a rear housing is provided having a refrigerant suction chamber and a refrigerant discharge chamber. The rear housing has first and second end sections, in which the first end section is connected through a valve plate to an end section of the cylinder block. The refrigerant suction chamber and the refrigerant discharge chamber are connectable with the cylinder bores of the cylinder block through holes formed in the valve plate.

Abstract: A swash plate type compressor comprises a case including a cylindrical cylinder block; a drive shaft installed in the case and rotatable about its axis; a swash plate carried by the drive shaft s and rotatable together therewith; a cylindrical rear housing having refrigerant intake and exhaust chambers defined therein; and a sealing structure arranged between the cylinder block and the rear housing to assure a hermetical sealing therebetween.

Abstract: In order to produce a single headed piston for a swash plate compressor, the following steps are used. First, a shaped block of metal is cast, the block including a plurality of unfinished piston structures which are aligned and integrated, each unfinished piston structure including a head portion and a neck portion which are axially spaced. Then, the head portions of the piston structures are machined. Then, an outer surface of the cast block is entirely coated with a fluorocarbon resin. Then, the coated outer surfaces of the head portions are ground, and then, each neck portion is machined to form two spherical recesses which face each other, the two spherical recesses being used for slidably receiving shoes. Then, the cast block is cut to separate the piston structures from one another.