| 摘要 |
PCT No. PCT/DE80/00102 Sec. 371 Date Mar. 3, 1981 Sec. 102(e) Date Mar. 3, 1981 PCT Filed Jul. 11, 1980 PCT Pub. No. WO81/00239 PCT Pub. Date Feb. 5, 1981.A power steering arrangement has a booster pressure cylinder shiftable on a piston fixed to the vehicle frame with steering rods connecting from the cylinder to the vehicle wheels. Valve means operable by a manually operated steering wheel pressurizes and exhausts the cylinder chambers at the ends of the piston. The valve means is carried in the piston for compactness and is actuated by a rack reciprocated by a pinion rotated in response to rotation of the manual steering wheel. The arrangement provides the advantage of compact assembly and rugged construction coupled with a minimum of oil leakage from the pressure cylinder. Inasmuch as the piston rod is fixed and has flow passages connecting to pump and tank, attachment of conduits for pressure and exhaust may be readily made. There are no moving conduit parts and tight sealing is achieved. The arrangement effects a desirable geometry of the steering mechanism.
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