Title:
POWER STEERING APPARATUS
Document Type and Number:
Japanese Patent JPS61271172
Kind Code:
A
Abstract:
PURPOSE:To improve the high-speed stability and straight advance stability by installing a pressure amplifier into a system for feedback-inputting the pressure supplied into a power unit into a reaction-force mechanism, thus obtaining always proper reaction force. CONSTITUTION:A hydraulic reaction-force type power steering apparatus supplies the discharge oil pressure P from a constant flow-rate discharge pump 81 into a power unit 82 through a pipe 87, and supplies a reaction-force pressure adjusting mechanism 83 from the pipe 87 through a branched pipe 88. In the mechanism 83, the oil pressure adjusted to alphaP is feedback-input into a reaction- force mechanisms 84, and the output of the power unit 82 is properly reduced, and steering feeling is improved. With such constitution, a reaction-force amplifier 11 is installed into a system 10 in which the supplied pressure into the power unit 82 is feedback-input into the reaction-force mechanism 84. The reaction-force amplifier 11 controls the discharge pressure of a constant flow- rate discharge pump 21 by controlling a pressure-correspondence type variable throttle valve 22 by the hydraulic pressure alphaP.
Inventors:
OMICHI TOSHIHIKO
HIRAGUSHI SHUZO
HIRAGUSHI SHUZO
Application Number:
JP11149785A
Publication Date:
December 01, 1986
Filing Date:
May 24, 1985
Export Citation:
Assignee:
KOYO SEIKO CO
International Classes:
B62D6/00; B62D5/07; (IPC1-7): B62D5/07; B62D6/00
Domestic Patent References:
| JPS4724025A | ||||
| JPS49108730A | 1974-10-16 | |||
| JPS4939460A | 1974-04-12 | |||
| JPS61113561A | 1986-05-31 |
Attorney, Agent or Firm:
Sadao Ito
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