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Title:
【発明の名称】斜板プランジャ式油圧装置
Document Type and Number:
Japanese Patent JP2974166
Kind Code:
B2
Abstract:
PURPOSE:To reduce the vibration exciting force applied to a swash plate, etc., and suppress increase of the rate of pulsation by reserving a larger gap than a communication port between a discharge port and a suction port formed in d distribution valve plate. CONSTITUTION:A gap larger than a communication port 13a is reserved between a discharge port 14 and a suction port 15 formed in a distribution valve plate 7. That is, the ports 14, 15 are arranged so that the communication port 13a contacts the suction port 15 and separates from the discharge port 4 when plunger is positioned at the lower dead points B.D.C..., and the communication port 13a contacts the discharge port 14 and is positioned apart from the suction port 15. Thereby the oil pressure change in cylinder can be made gradual, the vibration exciting force applied to a swash plate, etc., be reduced, and increase of the rate of pulsation be suppressed.

Inventors:
KANAMARU YOSHIHIRO
OKUDA AKIHITO
TANE TOSHIAKI
OGAWA HIROHISA
Application Number:
JP4255191A
Publication Date:
November 08, 1999
Filing Date:
February 14, 1991
Export Citation:
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Assignee:
HONDA GIKEN KOGYO KK
International Classes:
F04B1/20; F16H39/14; (IPC1-7): F04B1/20; F16H39/14
Domestic Patent References:
JP5443302A
Attorney, Agent or Firm:
大西 正悟