Title:
A rotor device of a vacuum pump
Document Type and Number:
Japanese Patent JP6253700
Kind Code:
B2
Abstract:
The present invention provides a rotor device for a vacuum pump, comprising a rotor including a hub (138) and a shaft (140). When the hub (138) is disposed on the shaft (140), a first press-fitting portion is formed between a first section (140) of the shaft (134) and a first section (146) of the hub (138), and a second press-fitting portion is formed between a second section (142) of the shaft (134) and a second section (148) of the hub (138). The first section (140) of the shaft (134) and the first section (146) of the hub (138) are first press-fit to each other, and the second section (142) of the shaft (134) and the second section (148) of the hub (138) are secondly press-fit to each other. A force is reliably transferred between the hub (138) and the shaft (140), and the hub (138) and the shaft (140) can be separated without being damaged.
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Inventors:
Wolfgang Roche
Jürgen Wagner
Tobias Stol
Michael Schweighoefer
Jürgen Wagner
Tobias Stol
Michael Schweighoefer
Application Number:
JP2016086886A
Publication Date:
December 27, 2017
Filing Date:
April 25, 2016
Export Citation:
Assignee:
Pfeiffer Vacuum Game Behr
International Classes:
F04D19/04; F16B17/00
Domestic Patent References:
| JP2011033026A | ||||
| JP2029262Y2 | ||||
| JP2002138987A | ||||
| JP63057380U |
Attorney, Agent or Firm:
Mitsufumi Esaki
Blacksmith
Atsushi Shinohara
Kiyota Eisho
Blacksmith
Atsushi Shinohara
Kiyota Eisho
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