Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/166683
Kind Code:
A1
Abstract:
This pump device comprises: a drive shaft member (6); a rotor (8) which is rotated by the drive shaft member and has an insertion hole (83) into which the drive shaft member is inserted, and a slit (80); a vane (81) provided in the slit so as to be capable of moving forward/backward; a cam ring (9) which, when the radiation direction of the rotary axial line is defined as the radial direction, is provided on the outside of the rotor in the radial direction, is formed in an annular shape, and forms a pump chamber (82) along with the rotor and the vane; a housing (2) having an accommodation recess (20) in which the rotor, the vane, and the cam ring are accommodated, and which includes a first opposing surface and a second opposing surface, which are a pair of opposing surfaces opposing each other in the axial direction; and a restriction part (first step 66 and C-ring member 67) which restricts the movement of the drive shaft member with respect to the rotor in the axial direction.
Inventors:
SOEDA JUN (JP)
SATO SHUNSUKE (JP)
SATO SHUNSUKE (JP)
Application Number:
PCT/JP2021/004318
Publication Date:
August 26, 2021
Filing Date:
February 05, 2021
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F04C15/00; F04C2/344
Foreign References:
| JPS5920024U | 1984-02-07 | |||
| JP2009074372A | 2009-04-09 | |||
| JP2010180798A | 2010-08-19 | |||
| JP2014181612A | 2014-09-29 | |||
| US6408975B1 | 2002-06-25 |
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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