Title:
VARIABLE DISPLACEMENT OIL PUMP
Document Type and Number:
WIPO Patent Application WO/2018/216418
Kind Code:
A1
Abstract:
A variable displacement oil pump 1 is provided with: a rotary shaft 2; pump bodies 3; axial cylinders 3a; pistons 5; a swash plate 6 that applies axial displacement corresponding to a tilt angle with respect to the rotary shaft 2 to each of the pistons 5; and an angle changing mechanism A for changing the tilt angle of the swash plate 6 with respect to the rotary shaft 2, wherein the angle changing mechanism A is formed of an assembly of mechanical components that are integrally rotatable with the rotary shaft 2, and is provided with an axial displacement part B that is continuously displaceable to a prescribed position on one side in the axial direction when the rotational speed of the rotary shaft 2 exceeds a prescribed value, and the tilt angle of the swash plate 6 becomes larger as the axial displacement part B is displaced to one side in the axial direction.
Inventors:
MATSUTO TAKUSHI (JP)
KAWAI MASAHIRO (JP)
IKEDA ATSUSHI (JP)
KAWAI MASAHIRO (JP)
IKEDA ATSUSHI (JP)
Application Number:
PCT/JP2018/016653
Publication Date:
November 29, 2018
Filing Date:
April 24, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F04B1/22; F04B1/30
Foreign References:
| JPH01174580U | 1989-12-12 | |||
| JPH10110671A | 1998-04-28 | |||
| JP2002349684A | 2002-12-04 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Download PDF:
Previous Patent: ELASTIC WAVE DEVICE, FILTER, HIGH-FREQUENCY FRONT-END CIRCUIT AND COMMUNICATION APPARATUS
Next Patent: PNEUMATIC TIRE
Next Patent: PNEUMATIC TIRE