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Title:
油圧式ロック装置
Document Type and Number:
Japanese Patent JP4365469
Kind Code:
B2
Abstract:
A hydraulic locking device, wherein a booster (7) having a discharge part (6) communicating with an outer peripheral side hydraulic chamber (5) is installed in a case member (2), an input port (16) feeding an input hydraulic pressure from the outside is provided in an input oil chamber (15) of the booster (7), oil filled sealingly is provided in the outer peripheral hydraulic chamber (5) and the discharge part (6), and the booster (7) is driven by the input hydraulic pressure to generate a hydraulic pressure higher then the input hydraulic pressure in the discharge part (6) and the outer peripheral hydraulic chamber (5) so as to elastically deform a thin wall tube part (4a) of a sleeve body (4) to a radially contracting direction for locking a rod, whereby the hydraulic locking device can be downsized and increased in output power, and a hydraulic pressure supply source can be downsized and depressurized.

Inventors:
川上 孝幸
Application Number:
JP4692299A
Publication Date:
November 18, 2009
Filing Date:
February 24, 1999
Export Citation:
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Assignee:
パスカルエンジニアリング株式会社
International Classes:
F15B15/26; B23B31/30; B23Q3/10; B25B5/06; F15B3/00
Domestic Patent References:
JP6047710U
JP62134904U
JP54030374A
JP55161107U
JP59208207A
JP1264705A
JP60132106A
JP53147175A
JP2002031105A
Foreign References:
US5957443
Attorney, Agent or Firm:
岡村 俊雄



 
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