Taiho Kogyo Co., Ltd.

Naoki Horibe

Masanori Akizuki

Hiroshi Ito

Hiroshi Kanemitsu

Masaharu Hatta

Satoshi Nomura

Akira Sawamoto

Maki Aoki

Takao Masamura

Youichirou Tsuboi

Akio Hiraoka

Noriyuki Wada

A sliding member () includes a base material (), a porous sintered layer () provided on the base material (), and a resin layer () impregnated into the porous sintered layer () and provided on the porous sintered layer (). In the porous sintered layer (), a porosity decreases from a second surface (S) opposite to a first surface (S) closer to the base material, toward the first surface (S), the first surface and the second surface each being one of end surfaces in the thickness direction, and a decrease rate of the porosity in the thickness direction (Z) in a first region (E) occupying 50% or more of the thickness of the porous sintered layer () from the second surface (S) toward the first surface (S) is larger than a decrease rate of the porosity in the thickness direction (Z) in a second region (E) other than the first region (E) in the porous sintered layer ().

Sliding member

First closing plate and second closing plate close opening portions at both ends of cylindrical member in an axial direction. Base is housed in a space formed by cylindrical member, first closing plate, and second closing plate, and rotates around an axis in the same direction as the axial direction of cylindrical member. Resin layers are formed on thrust surfaces of base. Groove C is a plurality of concentric circular grooves or a spiral groove formed on each resin layer, and the center of circles of the circular grooves or the center of a spiral of the spiral groove is different from the rotation center of base.

Rotor with a resin layer that has circular or spiral grooves

A scroll compressor which can be mounted in an automobile has a slide bearing resulting from baking onto a back metal a sliding layer of 5-60 wt % graphite having an average diameter of 5-50 &#x3bc;m and a graphitization degree of at least 0.6, the remainder containing 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.

Scroll compressor

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Toyota, Japan

Naoki Horibe