Title:
VACUUM PUMP
Document Type and Number:
WIPO Patent Application WO/2011/102006
Kind Code:
A1
Abstract:
Provided is a vacuum pump provided with a rotor shaft (33) which is rotatably supported by a bearing and rotated at a high speed by a motor (36), and a rotor (30) which is fastened to an end of the rotor shaft (33) in the axial direction and has a vacuum exhaust function unit. In the engagement portion at which the rotor shaft (33) is fastened to the rotor (30), an engagement hole (330) formed in at least one of the rotor shaft (33) and the rotor (30), and an engagement shaft (300) formed on the other are provided. A filling member (40) having a shear strength smaller than that of the rotor (30) and the rotor shaft (33) is provided between the engagement hole (330) and the engagement shaft (300).
Inventors:
YAMAGUCHI TOSHIKI (JP)
Application Number:
PCT/JP2010/059934
Publication Date:
August 25, 2011
Filing Date:
June 11, 2010
Export Citation:
Assignee:
SHIMADZU CORP (JP)
YAMAGUCHI TOSHIKI (JP)
YAMAGUCHI TOSHIKI (JP)
International Classes:
F04D19/04
Foreign References:
| JP2007239464A | 2007-09-20 | |||
| JPH1094934A | 1998-04-14 |
Attorney, Agent or Firm:
NAGAI, Fuyuki (JP)
Fuyuki Nagai (JP)
Fuyuki Nagai (JP)
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Claims:
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