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Title:
VACUUM PUMP
Document Type and Number:
WIPO Patent Application WO/2019/087447
Kind Code:
A1
Abstract:
[Problem] To efficiently supply lubricating oil to a bearing member by means of a simple mechanism. [Solution] A vacuum pump that comprises a first housing, a second housing, a rotor shaft, a lubricating oil scraping plate, and a bearing member. The second housing is attached to the first housing and, with the first housing, forms a space that stores lubricating oil. The rotor shaft passes through the first housing. The lubricating oil scraping plate is housed in the space and attached to the rotor shaft. The bearing member is fixed to the first housing and rotatably supports the rotor shaft. A supply port that can supply the lubricating oil to the bearing member is provided in the first housing. Lubricating oil that has been scraped up by the lubricating oil scraping plate comes into contact with an inner wall upper part of the second housing. A recess that allows the lubricating oil to move to the supply port is provided in the inner wall upper part of the second housing.

Inventors:
KIMURA, Yasuhiro (INC. 2500 Hagisono, Chigasaki-sh, Kanagawa 43, 〒2538543, JP)
TOKUHIRA, Shinnosuke (INC. 2500 Hagisono, Chigasaki-sh, Kanagawa 43, 〒2538543, JP)
INOUE, Hideaki (INC. 2500 Hagisono, Chigasaki-sh, Kanagawa 43, 〒2538543, JP)
MACHIYA, Kenji (INC. 2500 Hagisono, Chigasaki-sh, Kanagawa 43, 〒2538543, JP)
Application Number:
JP2018/020668
Publication Date:
May 09, 2019
Filing Date:
May 30, 2018
Export Citation:
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Assignee:
ULVAC, INC. (2500 Hagisono, Chigasaki-shi Kanagawa, 43, 〒2538543, JP)
International Classes:
F04C29/02; F04C25/02; F16C33/66; F16N7/26; F16N7/32
Attorney, Agent or Firm:
OMORI, Junichi (2nd Floor U&M Akasaka Bldg, 7-5-47 Akasaka Minato-k, Tokyo 52, 〒1070052, JP)
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