Title:
ベーンポンプ装置
Document Type and Number:
Japanese Patent JP6625429
Kind Code:
B2
Abstract:
An embodiment provides a vane pump device. In the vane pump device, vane grooves of a rotor include columnar grooves which accommodate oil, and support the vanes. An inner-plate low pressure side recess portion is provided in an end surface of an inner plate along a rotation direction of the rotor, and supplies oil to the columnar grooves. It includes a low pressure side upstream recess portion, a low pressure side downstream recess portion, and a low pressure side connection recess portion that connects the low pressure side upstream recess portion and the low pressure side downstream recess portion. The width of the low pressure side downstream recess portion is narrower than that of the low pressure side upstream recess portion. The width of the low pressure side connection recess portion is equal to that of the low pressure side downstream recess portion.
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Inventors:
Nishikawa year-old student
Application Number:
JP2015255416A
Publication Date:
December 25, 2019
Filing Date:
December 25, 2015
Export Citation:
Assignee:
Showa Corporation
International Classes:
F04C2/344; F04C11/00; F04C15/00
Domestic Patent References:
| JP2001512215A | ||||
| JP2011012575A |
Attorney, Agent or Firm:
Jiro Kobe
Fumio Ogata
Fumio Ogata