# US 2018/0023619 A1 · Thrust sliding bearing

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- Number: US 2018/0023619 A1
- Document ID: US20180023619A1
- Status: Published application
- Kind: A1
- Application number: 15/556,888
- Filed: 2015-12-18
- Published: 2018-01-25
- Earliest claimed: 2015-03-10
- Assignees: Taiho Kogyo Co., Ltd.
- Applicants: TAIHO KOGYO Co., Ltd.
- Inventors: Shogo TAKAGI; Satoru KANBARA
- Web page: https://patentgrep.com/patent/US20180023619A1

## CPC

- F16C 17/04: for axial load only
- F16C 9/02: Crankshaft bearings
- F16C 17/047: {with fixed wedges to generate hydrodynamic pressure}
- F16C 33/1065: {Grooves on a bearing surface for distributing or collecting the liquid}
- F16C 33/1075: {Wedges, e.g. ramps or lobes, for generating pressure}
- F16C 33/1095: {with solids as lubricant, e.g. dry coatings, powder}
- F16C 33/125: {Details of bearing layers, i.e. the lining}
- F16C 33/20: Sliding surface consisting mainly of plastics (F16C33/22 - F16C33/28 take precedence)
- F16C 33/201: {Composition of the plastic}
- F16C 33/206: {with three layers}
- F16C 33/208: {Methods of manufacture, e.g. shaping, applying coatings}
- F16C 33/046: {divided or split, e.g. half-bearings or rolled sleeves}
- F16C 33/205: {with two layers}
- F16C 2204/04: based on silver
- F16C 2204/10: Alloys based on copper
- F16C 2204/30: Alloys based on one of tin, lead, antimony, bismuth, indium, e.g. materials for providing sliding surfaces
- F16C 2206/40: Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
- F16C 2208/20: Thermoplastic resins
- F16C 2208/32: Polytetrafluorethylene [PTFE] (F16C2208/58 takes precedence)
- F16C 2208/36: Polyarylene ether ketones [PAEK], e.g. PEK, PEEK (F16C2208/58 takes precedence)
- F16C 2208/40: Imides, e.g. polyimide [PI], polyetherimide [PEI] (F16C2208/58 takes precedence)
- F16C 2208/42: Polyamideimide [PAI] (F16C2208/58 takes precedence)
- F16C 2208/44: Polybenzimidazole [PBI] (F16C2208/58 takes precedence)
- F16C 2208/52: Polyphenylene sulphide [PPS] (F16C2208/58 takes precedence)
- F16C 2208/60: Polyamides [PA]
- F16C 2208/82: Composites, i.e. fibre reinforced thermosetting resins
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A crank washer may be provided for supporting a load exerted in the thrust direction of a crankshaft, wherein an oil groove is radially formed in a thrust receiving surface, a first resin sheet, a second resin sheet, and a third resin sheet are laminated in a tapered land region TP partitioned by the oil groove, and the widths of the laminated first resin sheet, second resin sheet, and third sheet in the circumferential direction gradually decrease in the direction toward the top layer.

## Claims

### Claim 1

A thrust sliding bearing for supporting a load applied in a thrust direction of a rotating shaft, wherein
a thrust receiving surface is provided with radial oil grooves,
a resin portion is formed by laminating a plurality of resin sheets in an area defined by the oil grooves of the thrust receiving surface,
circumferential widths of the plurality of resin sheets increase upwardly from a bottom resin sheet, and
a circumferential width of the resin portion decreases upwardly.

### Claim 2 (depends on 1)

The thrust sliding bearing according to claim 1, wherein
the resin portion is formed so as to be axisymmetric about a centerline passing through an approximate circumferential center of the area defined by the grooves.

### Claim 3 (depends on 1)

The thrust sliding bearing according to claim 1, wherein
the resin portion includes a land portion; and tapered portions or stepped portions that are formed with the land portion interposed between the tapered portions or the stepped portions.

### Claim 4 (depends on 1)

The thrust sliding bearing according to claim 1, wherein
the resin portion includes a land portion; and tapered portions or stepped portions that are formed with the land portion interposed between the tapered portions or the stepped portions.