Title:
真空ポンプ
Document Type and Number:
Japanese Patent JP6658309
Kind Code:
B2
Abstract:
A vacuum pump for rotary driving a rotor by a motor to perform vacuum pumping, wherein a motor rotor of the motor includes a yoke fixed to a shaft of the rotor, and a permanent magnet held at the yoke, and the yoke includes a holding portion provided apart from the shaft and configured to hold the permanent magnet, and a pair of fitting portions provided respectively at both ends of the holding portion in an axial direction and bonded to the shaft by fitting, and a radial thickness dimension of each fitting portion is set less than that of the holding portion.
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Inventors:
Taiki Nishimura
Koichi Shimizu
Osamu Ashida
Koichi Shimizu
Osamu Ashida
Application Number:
JP2016108977A
Publication Date:
March 04, 2020
Filing Date:
May 31, 2016
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
F04D19/04; H02K1/22
Domestic Patent References:
| JP2014181628A | ||||
| JP9046944A | ||||
| JP2010011681A | ||||
| JP3124237A | ||||
| JP2014173431A | ||||
| JP2006141164A |
Foreign References:
| US20050029885 |
Attorney, Agent or Firm:
Fuyuki Nagai
Morimoto Takuyuki
Morimoto Takuyuki