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Title:
PUMP DEVICE AND BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/058950
Kind Code:
A1
Abstract:
This pump device is provided with a motor, a rotating shaft, a drive member, a first plunger pump, and a second plunger pump. The rotating shaft is rotated by the motor. The drive member is disposed at the outer periphery of the rotating shaft. The drive member includes a cam which is eccentric relative to the axis of rotation of the rotating shaft. The first plunger pump is provided with a first plunger and a first axis. The second plunger pump is provided with a second plunger and a second axis. The first and second plungers are in contact with the outer periphery of the drive member and is movable in a direction perpendicular to the axis of rotation. The first axis passes through the center of a cross-section of the first plunger and is parallel to the direction of movement of the first plunger. The second axis passes through the center of a cross-section of the second plunger, is parallel to the direction of movement of the second plunger, and is offset from the first axis in the direction of the axis of rotation.

Inventors:
KAWAKAMI, Takahiro (4-7-1, Onna, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
NAKAZAWA, Chiharu (4-7-1, Onna, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
MISUNO, Masaki (4-7-1, Onna, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
Application Number:
JP2018/032691
Publication Date:
March 28, 2019
Filing Date:
September 04, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
B60T8/34; F04B9/04
Foreign References:
JP2006520437A2006-09-07
JP2010149562A2010-07-08
Attorney, Agent or Firm:
ONO, Shinjiro et al. (YUASA AND HARA, Section 206 New Ohtemachi Bldg., 2-1, Ohtemachi 2-chome, Chiyoda-k, Tokyo 04, 〒1000004, JP)
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