Title:
BUMP FOIL ASSEMBLY, FOIL DYNAMIC-PRESSURE AIR BEARING, AND SHAFTING
Document Type and Number:
WIPO Patent Application WO/2023/126021
Kind Code:
A3
Abstract:
A bump foil assembly (100), comprising a positioning foil (110) and multiple arched bump units (120). The positioning foil (110) is provided thereon with multiple positioning grooves (111). Each arched bump unit (120) comprises a first positioning section (121) and a distending section (122) which are connected to each other. The first positioning sections (121) are abutted against the side of the positioning foil (110) facing a bearing sleeve. The distending sections (122) are provided with an arch shape. The distending sections (122) run through the corresponding positioning grooves (111). Two sidewalls of the corresponding positioning grooves (111) in the circumferential direction of the positioning foil (110) do not touch the distending sections (122). Further provided are a foil dynamic-pressure air bearing comprising the bump foil assembly, and a shafting comprising the foil dynamic-pressure air bearing. The bump foil assembly, foil dynamic-pressure air bearing and shafting in the present application can improve the damping performance of the foil dynamic-pressure air bearing.
Inventors:
NIE HUIFAN (CN)
ZHANG BIAO (CN)
ZHAO JUNZHI (CN)
BI LIUXIN (CN)
HOU YANHENG (CN)
ZHANG BIAO (CN)
ZHAO JUNZHI (CN)
BI LIUXIN (CN)
HOU YANHENG (CN)
Application Number:
PCT/CN2023/077903
Publication Date:
August 24, 2023
Filing Date:
February 23, 2023
Export Citation:
Assignee:
TIANJIN EMAGING TECH CO LTD (CN)
International Classes:
F16C17/02; F16C27/02; F16C35/02
Foreign References:
| CN113969938A | 2022-01-25 | |||
| CN214788551U | 2021-11-19 | |||
| CN112324796A | 2021-02-05 | |||
| CN104632871A | 2015-05-20 | |||
| CN112648379A | 2021-04-13 | |||
| JP2011169413A | 2011-09-01 | |||
| JP2002364643A | 2002-12-18 | |||
| US6261002B1 | 2001-07-17 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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