Title:
ポンプ装置
Document Type and Number:
Japanese Patent JP5623371
Kind Code:
B2
Abstract:
In a hollow seal member kept in abutted-engagement with a shaft hole formed in a housing via an elastic body and kept in sliding-contact with an outer circumference of a drive shaft for sealing against a leakage of fluid from a pump chamber, the seal member is provided with a seal part formed within an area at one end and kept in sliding-contact with the outer circumference of the drive shaft over a given hollow inner circumferential surface, and a rotation-stopping part formed within an area at the other end for restricting a movement of the seal member in a rotation direction of the drive shaft. A rotational resistance of the rotation-stopping part to the drive shaft is set to be less than a rotational resistance of the seal part.
Inventors:
中澤 千春
御簾納 雅記
御簾納 雅記
Application Number:
JP2011256914A
Publication Date:
November 12, 2014
Filing Date:
November 25, 2011
Export Citation:
Assignee:
日立オートモティブシステムズ株式会社
International Classes:
F04C15/00; F04C2/10; F04C2/18
Attorney, Agent or Firm:
Masamichi Ayada
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