Title:
フレッティングコロージョン対応揺動ベーン型ポンプ・アクチュエータ
Document Type and Number:
Japanese Patent JP5614093
Kind Code:
B2
Abstract:
Disclosed herein is an oscillating vane type pump actuator. The pump actuator of the present invention provides a method of preventing fretting corrosion from being caused on joined surfaces of elements. A cylinder (3c) has a comparatively low radial strength, and each of side covers (1c) and (2c) has a high radial strength. A cylindrical portion (1c-c), (2c-c) is provided on each side cover. Thus, when high pressure of work oil distorts the cylinder into a shape in which the cross-section of the cylinder becomes an ellipse-like shape, the cylindrical portions of the side covers act such that they are distorted in the same shape as that of the cylinder. Further, a passage that always communicates with a low-pressure side working chamber is formed in the contact surfaces between a fixed vane that is fixed to the cylinder and the side covers.
Inventors:
渡部 富治
Application Number:
JP2010108717A
Publication Date:
October 29, 2014
Filing Date:
April 17, 2010
Export Citation:
Assignee:
渡部 富治
コリア オーシャン リサーチ アンド ディベロップメント インスティチュート
コリア オーシャン リサーチ アンド ディベロップメント インスティチュート
International Classes:
F04C9/00; F03C4/00; F04C15/00
Attorney, Agent or Firm:
Toshio Yoshikawa