Title:
INNER ROTOR FOR INTERNAL GEAR PUMP
Document Type and Number:
WIPO Patent Application WO/2006/075363
Kind Code:
A1
Abstract:
[PROBLEMS] Local stress concentration caused by rotational moment transmitted from a crankshaft is eased. [MEANS FOR SOLVING PROBLEMS] A crankshaft (6) and an installation hole (5) have two connection sections (12, 12, 22, 22) for connecting two main circular arc sections (11, 21) on the same circle and adjacent main circular arc sections (11, 11, 21, 21), and the opposite connection sections (12, 12, 22, 22) have a substantially parallel cross-sectional shape. The connection sections (22) of the installation hole (5) have a large circular arc shape projecting inward. Rotational force of the crankshaft (6) is transmitted to the installation hole (5), with the connection sections (12) of the crankshaft (6) and the large circular arc-shaped connection sections (22) of the installation hole (5) in linear contact with each other, so that a local stress value occurring at the installation hole (5) can be reduced.
Inventors:
HOSONO KATSUAKI (JP)
Application Number:
PCT/JP2005/000233
Publication Date:
July 20, 2006
Filing Date:
January 12, 2005
Export Citation:
Assignee:
MITSUBISHI MATERIALS PMG CORP (JP)
HOSONO KATSUAKI (JP)
HOSONO KATSUAKI (JP)
International Classes:
F04C2/10; F04C15/00; (IPC1-7): F04C2/10; F04C15/00
Foreign References:
| JPS60180783U | 1985-11-30 | |||
| JPS59107987U | 1984-07-20 | |||
| JPS61223282A | 1986-10-03 | |||
| JP2004332754A | 2004-11-25 | |||
| JPH11343985A | 1999-12-14 | |||
| JPS63223382A | 1988-09-16 | |||
| DE19914269A1 | 2000-10-19 |
Other References:
See also references of EP 1837522A4
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