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Patent Searching and Data


Title:
SLIDING BEARING STRUCTURE AND SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2020/157902
Kind Code:
A1
Abstract:
The purpose of the invention is to obtain a sliding bearing structure in which oil film pressure is effectively increased between a rotating shaft and a sliding bearing of a scroll compressor, and galling of the rotating shaft and the sliding bearing is minimized. A sliding bearing structure (50) and a scroll compressor (100) according to the present invention are provided with a rotating shaft (6) that drives an oscillating scroll of the scroll compressor, and a sliding bearing (15) that supports a diametrical load of the rotating shaft. The rotating shaft (6) is provided with axially extending grooves (20) in an outer peripheral surface that faces the sliding bearing (15), the grooves (20) are formed so as to cause a pumping effect, and the outer peripheral surface of the rotating shaft (6) is provided with a region P set in a prescribed angular range along the circumferential direction of the outer peripheral surface, and a region Q constituting the rest of the outer peripheral surface other than the region P. The percentage of the region P occupied by grooves (20) relative to the area of the outer peripheral surface is greater than the percentage of the region Q occupied by grooves (20) relative to the area of the outer peripheral surface.

Inventors:
IDO SHINICHIRO (JP)
SASAKI TATSUYA (JP)
HIRAYAMA TOMOKO (JP)
Application Number:
PCT/JP2019/003345
Publication Date:
August 06, 2020
Filing Date:
January 31, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C18/02; F04C29/00; F04C29/02; F16C17/02
Foreign References:
JPH0712068A1995-01-17
JP2017172484A2017-09-28
JPS62106122A1987-05-16
JPS58217818A1983-12-17
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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