Abstract: [Problem] To exchange the roller bearing that has been used in a scroll compressor mounted in an automobile with a m slide bearing. To provide a slide bearing having a performance that is at least equivalent to that of a roller bearing. [Solution] The slide bearing results from baking onto a back metal a sliding layer of 5-60 wt % graphite having an average diameter of 5-50 ?m and a graphitization degree of at least 0.6, the remainder comprising a polyimide resin and/or a polyamide-imide resin. The form of the graphite has: (a) an average shape factor (YAVE) as defined of 1-4 for the particles excluding the minute particles that are no greater than 0.5 times the average diameter, and there being at least 70% by number of particles having a shape factor (Y) in the range of 1-1.5; or (b) graphite particles having a particle ratio of at least 0.5 being at least 50% of the total by number.

Abstract: A swash plate 3 includes a substrate 11 made of an iron-based material, a hard first resin layer 12 provided to coat an end surface of the substrate 11, and a soft second resin layer 13 provided to coat the first resin layer 12. A spiral annular groove 12A is formed in a surface of the first resin layer 12, and the second resin layer 13 is provided to match the sectional shape of the first resin layer 12. With the soft second resin layer 13 on a sliding surface 3A of the swash plate 3, a swash plate 3 having a good fit in an initial stage of sliding can be provided. When the second resin layer 13 partially wears, a protrusion 12 of the first resin layer 12 of the hard resin is exposed to provide good wear resistance and good sliding properties.

Abstract: A swash plate type compressor includes a swash plate rotating around a rotating shaft, pistons that advance and retreat with the rotation of the swash plate and formed with a hemispherical concave sliding surface, and shoes formed with a flat end surface part in sliding contact with the swash plate and a spherical surface part in sliding contact with the sliding surface of the piston. A cylindrical part is formed between the spherical surface part and the end surface part of the shoe, and the shoe is formed with a flange part that surrounds the boundary portion between the cylindrical part and the end surface part and is in sliding contact with the swash plate. Further, the flange part is located on the inside of an imaginary spherical surface including the sliding surface of the piston.

Abstract: A swash plate of a swash plate-type compressor is covered with a resin-based coating layer containing 5 to 60 mass % of spherical graphite particles having an average particle diameter of 5 to 50 ?m, the balance being one or more species selected from polyimide resin and polyamide-imide resin. The spherical graphite particles excepting minute particles having a particle diameter 0.5 times or smaller the average particle diameter, have an average shape coefficient (YAVE) falling within a range of 1 to 4, and 70% or more in number of the spherical graphite particles have a shape coefficient (Y) within a range of 1 to 1.5, YAVE=total[{PMi2/4?Ai}]/i Y=PM2/4?A wherein “total” indicates that a value in [ ] is totalized for number “i”, “PM” indicates the circumferential length of one particle, “A” indicates a cross sectional area of one particle, and “i” indicates the measurement number.

Abstract: A swash plate type compressor 1 arranged with a swash plate 3 which rotates around a shaft 2, a piston 4 which moves back and forth with the rotation of the swash plate 3 and formed with a spherical indent part 4a, and a shoe 5 formed with a flat part 5a which slides against the swash plate 3 and a spherical surface part 5b which slides in the spherical indent part 4a formed on the piston 4, wherein a coating layer 3b comprised s formed on the surface of the swash plate 3 and spiral or concentric shaped grooves 3c are formed with the center of the swash plate 3 at the center on the surface of the coating layer 3b, a diameter of the flat part 3 is set at 10.5 mm or less, and the pitch of the concentric protrusion 3d is set so that the sum of the length of the concentric protrusions 3d which contact the flat part 5a is 300 mm or more.

Abstract: A rotary compressor 1 includes a pair of closing members 11 and 12 that close axial front and rear opening portions of a cylinder 5, and a rotor 6 that is accommodated within the cylinder 5 and rotated by a motor. Concave portions 11C and 12C having the same depth are respectively formed in inner wall surfaces 11A and 12A of the closing members 11 and 12, and the concave portions 11C and 12C are filled with synthetic resin coatings 22. Accordingly, the surfaces of the synthetic resin coatings 22 are flush with the inner wall surfaces 11A and 12A located outwardly adjacent thereto (a left side in the drawing). The rotary compressor 1 which can prevent a seizure on end surfaces 6A and 6B of the rotor 6, and can be manufactured at low cost can be thereby provided.

Abstract: [Task] Seizure resistance of sliding material based on graphite-added resin is improved. [Means for Solution] A sliding material based on graphite-added resin has composition (1); graphite: average particle diameter of from 5 to 50 ?m, a degree of graphitization of 0.6 or more, the number of graphite particles having a minimum diameter/maximum diameter ratio of 0.5 or more amounts to 50% or more of the total number of the graphite particles observed in a photograph of an optional cross section, content 5 to 60% by weight, as well as composition (2). balance of polyimide resin and/or polyamide-imide resin.

Abstract: A swash plate compressor 1 includes a swash plate 3 which rotates around a rotary shaft 2, a piston 4 which moves forward and backward in response to the rotation of the swash plate 3 and in which a hemispherical concave sliding surface 4a is formed, and a shoe 5 in which there are formed a flat end surface portion 12 which comes into sliding contact with the swash plate 3 and a spherical surface portion 11 which comes into sliding contact with the sliding surface 4a of the piston 4. A columnar portion 13 is formed between the spherical surface portion 11 and the end surface portion 12 in the shoe 5, and in a boundary area between the columnar portion 13 and the spherical surface portion 11, there is formed a spherical-surface-portion side flange 14 which protrudes radially outward and constitutes the spherical surface portion. The lubrication of the shoe is satisfactorily performed and the entry of foreign matter into the sliding parts can be prevented.

Abstract: A swash plate 3 includes an substrate 11 made of an iron-based material, a hard first resin layer 12 provided to coat an end surface of the substrate 11, and a soft second resin layer 13 provided to coat the first resin layer 12. A spiral annular groove 12A is formed in a surface of the first resin layer 12, and the second resin layer 13 is provided to match a sectional shape of the first resin layer 12. With the soft second resin layer 13 on a sliding surface 3A of the swash plate 3, the swash plate 3 having a good fit in an initial stage of sliding can be provided. When the second resin layer 13 partially wears, a protrusion 12 of the first resin layer 12 of hard resin is exposed, and thus the swash plate 3 having good wear resistance can be provided. The swash plate 3 having good sliding properties can be provided.

Abstract: A swash plate type compressor 1 includes a swash plate 3 rotating around a rotating shaft, pistons 4 that advance and retreat with the rotation of the swash plate and each are formed with a hemispherical concave sliding surface, and shoes 5 each formed with a flat end surface part 12 being in sliding contact with the swash plate and a spherical surface part 11 being in sliding contact with the sliding surface 4a of the piston. A cylindrical part 13 is formed between the spherical surface part and the end surface part of the shoe, and the shoe is formed with a flange part 14 that surrounds the boundary portion between the cylindrical part and the end surface part and is in sliding contact with the swash plate. Further, the flange part is located on the inside of an imaginary spherical surface S including the sliding surface of the piston, and the diameter d2 of the cylindrical part is smaller than the diameter d3 of the opening of the sliding surface of the piston. The shoe can be lubricated satisfactorily.

Abstract: A method of manufacturing a shoe according to the present invention comprises a step of cutting a columnar raw material 1 to a given length to provide a disc-shaped raw material 2, a step of forming on one end face of the disc-shaped raw material a spherical sliding surface 10 which is to be disposed in sliding contact with a spherical surface on a piston, and a step of forming a thermal sprayed layer 6 on the other end face of the disc-shaped raw material by a rapid gas H.V.O.F. spraying process, the thermal sprayed layer serving as a flat plate-shaped sliding surface 9 which is to be disposed in sliding contact with a swash plate. A shoe which is provided with the thermal sprayed layer 6 exhibits an increased seizure resistance in comparison to a conventional shoe which is formed with a sintered layer, and can be manufactured inexpensively.

Abstract: A method of manufacturing a shoe including cutting a columnar raw material to a given length to provide a disc-shaped raw material, forming on one end face of the disc-shaped raw material a spherical sliding surface which is to be disposed in sliding contact with a spherical surface on a piston, and forming a thermal sprayed layer on the other end face of the disc-shaped raw material. The thermal sprayed layer serves as a flat plate-shaped sliding surface which is to be disposed in sliding contact with a swash plate. A shoe which is provided with the thermal sprayed layer exhibits an increased seizure resistance in comparison to a conventional shoe which is formed with a sintered layer, and can be manufactured inexpensively.