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Title:
TAPERED LAND THRUST BEARING DEVICE AND TURBOCHARGER PROVIDED WITH SAID BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/128977
Kind Code:
A1
Abstract:
 The purpose of the present invention is to provide a tapered land thrust bearing device having exceptional mechanical efficiency, in which bearing device the area of a land surface is substantially reduced without changing the profile shape of the land surface even if the area of the land surface is small, and a turbocharger provided with this bearing device, the tapered land thrust bearing device being provided with a ridge part having a first thrust part fitted on a rotating shaft, and a thrust member having a second thrust part that is provided around the periphery of a through-hole and that faces the first thrust part of the ridge part. The first thrust part and the second thrust part are each parallel to a plane orthogonal to the axis line of the rotating shaft, wherein either the first thrust part or the second thrust part has: a plurality of land surfaces provided at intervals around the circumferential direction of the through-hole; tapered surfaces provided to each of the plurality of land surfaces, joined via steps to the borders of the land surfaces on one side in the circumferential direction of the through-hole, and continuously joined to the borders of the land surfaces on the other side in the circumferential direction of the through-hole; and at least one concave part provided to each of the plurality of land surfaces.

Inventors:
FUTAE TAKAYA (JP)
NISHIDA HIDEAKI (JP)
Application Number:
JP2014/054798
Publication Date:
September 03, 2015
Filing Date:
February 27, 2014
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F16C17/04; F01D25/16; F02B39/00; F16C33/12
Domestic Patent References:
WO2013099600A12013-07-04
Foreign References:
JP2011131289A2011-07-07
JPH01133559U1989-09-12
JPH10213130A1998-08-11
DE2408938A11974-10-10
Other References:
See also references of EP 3112706A4
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P. C. (JP)
誠真 IP patent business corporation (JP)
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