Taiho Kogyo Co., Ltd.

Masaru Yoshikawa

Hiroshi Kanemitsu

Masaharu Hatta

Hiroshi Ueda

Akira Sawamoto

A hemispherical shoeis equipped with a sliding surfaceA which slides with a swash plate, and a hemispherical convexB. Hardening is performed by radiating a laser so that minute circlesmay be drawn on the sliding surfaceA. Then, lapping is given to the sliding surfaceA and, finally, buffing is given thereto. Thereby, the annular swelling portions' and concavities&#x2032; are formed in positions of the circlesand, further, lubricating oil passages&#x2032; which include net-like concavities are formed in the sliding surfaceA. A hardening part is formed of the above-mentioned annular swelling portions&#x2032;. The above-mentioned annular swelling portions&#x2032; are formed so that a ratio of an area of a total of all the above-described annular swelling portions&#x2032; occupying an area of the sliding surfaceA which is a hardening object domain may become 0.3 to 0.8. It is possible to provide a shoewhich is good in seizure resistance in comparison with the past.

Shoe

A PTFE-based sliding material, wherein the porous sintered layer on the surface of backing metal is impregnated with baked PTFE, with one or both of the solid lubricant and wear-resistant additive together with fibrous PTFE forming an entangled fibrous PTFE structure, is used for a bearing of air-conditioner. Resistance of the bearing for local wear is required. Such wear resistance is to be enhanced. Carbides of an oligomer or polymer containing a hydrophilic group formed during baking are incorporated in the entangled structure of fibrous PTFE.

PTFE-based sliding material, bearing, and method for producing PTFE-based sliding material

A sliding deviceis constituted of a swash plateincluding a first sliding surfaceA and a semispherical shoesliding with the swash plate. The swash plateis constituted of a base materialB of high strength brass containing Mn and Si, and very small granular Mn&#x2014;Si compoundsare exposed on an inside of the base materialB and on the first sliding surfaceA (surface of the base materialB). The above described swash plateincreases in exposure amount of the Mn&#x2014;Si compoundsexposed on the first sliding surfaceA by applying etching to the base materialB after cutting the base materialB. The sliding deviceis favorable in seizure resistance and has a low manufacturing cost as compared with conventional sliding devices.

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Toyota, Japan

Masaru Yoshikawa