Title:
VANE PUMP
Document Type and Number:
WIPO Patent Application WO/2017/163770
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a vane pump configured so that an increase in the number of parts can be suppressed and so that the sealing performance between sliding surfaces can be easily ensured.
A vane pump (1) comprises: a housing (2) having a pump chamber (C); a rotor (3) having a cylindrical peripheral wall (300) which is accommodated within the pump chamber (C) and which has a pair of vane holding grooves (300a) facing each other in the diameter direction, the rotor (3) also having an oil chamber (A) defined inside the peripheral wall (300) and accumulating lubricating oil (O); and a vane (4) held by the pair of vane holding grooves (300a) and moving across the oil chamber (A) in the diameter direction. The inner surface of the housing (2) and/or the end surface of the peripheral wall (300), which defines a sliding interface (B) between the end surface and the inner surface, has oil grooves (300b-300h) for the lubricating oil (O).
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Inventors:
IKEDA SATOSHI (JP)
NAKAMUTA KEN (JP)
NAKAMUTA KEN (JP)
Application Number:
PCT/JP2017/007490
Publication Date:
September 28, 2017
Filing Date:
February 27, 2017
Export Citation:
Assignee:
TAIHO KOGYO CO LTD (JP)
International Classes:
F04C18/344; F04C25/02; F04C27/00; F04C29/00
Domestic Patent References:
| WO2004036046A1 | 2004-04-29 |
Foreign References:
| EP2151542A2 | 2010-02-10 | |||
| JP2004263690A | 2004-09-24 | |||
| JPS4872504U | 1973-09-11 |
Other References:
See also references of EP 3434901A4
Attorney, Agent or Firm:
HIGASHIGUCHI Michiaki et al. (JP)
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