Title:
磁気軸受装置及び真空ポンプ
Document Type and Number:
Japanese Patent JP4426049
Kind Code:
B2
Abstract:
A magnetic bearing device, comprising at least a touch down bearing and corrugated damping members inserted into an annular clearance between the bearing and a holding member thereof, the corrugated damping members being held continuously and assuredly at specified positions, wherein the cylindrical holding member (9) is used as a thrust bearing holding member and also as a touch down bearing holding member, the touch down bearing (4), i.e., a pair of rolling bearings (4a, 4b) disposed in upper and lower two stages are stored in the cylindrical holding member (9) around the inner periphery thereof, an annular clearance (G) is formed between the inner peripheral surface of the cylindrical holding member (9) and the outer rings of the pair of the rolling bearings (4a, 4b), a pair of corrugated band steel sheets (8a, 8b) as the corrugated damping members are inserted into the annular clearance (G), and a band-shaped thin metal sheet (10a) is inserted between the corrugated band steel sheet (8a) on the upper stage and the corrugated band steel sheet (8b) on the lower stage, whereby the band-shaped thin metal sheet (10a) functions as a positional displacement prevention means which prevents the pair of corrugated band steel sheets (8a, 8b) from being displaced.
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Inventors:
Akira Yamanouchi
Application Number:
JP2000087482A
Publication Date:
March 03, 2010
Filing Date:
March 27, 2000
Export Citation:
Assignee:
Edwards Co., Ltd.
International Classes:
F16C32/04; F04D19/04; F04D29/04; F04D29/046; F04D29/048; F04D29/049; F04D29/058; F16C27/04; F16C27/06; F16C39/02; F16C39/06; F16F1/18; F16F15/073
Domestic Patent References:
| JP6479415A | ||||
| JP8210351A |
Foreign References:
| CH658499A5 | ||||
| US4274683 |
Attorney, Agent or Firm:
Yoshiharu Matsushita