Hydraulic pressure system.

摘要

A hydraulic pressure system for supplying a fluid under pressure includes a fluid pressure source (11) for supplying the fluid pressure, an accumulator (12) for storing part of the fluid from the fluid pressure source, the accumulator having a gas chamber (24a) filled with a high-pressure gas for pressurizing the stored fluid, and a structural member having a hermetically sealed space (26) held in fluid communication with the gas chamber. The structural member comprises a link (10a) of an articulated mechanism interconnecting articulations, the link comprising a high polymer composite material (44a) and a metal material (40) and having smaller-diameter portions joined to the articulations, respectively. The composite material comprises a prepreg (43a) which is either woven of weft threads extending parallel to an axis of the link and warp threads extending perpendicularly to the axis of the link, or woven of weft threads and warp threads which are inclined at about 54.75 DEG with respect to the axis of the link.