| 摘要 |
A power steering gearbox valve is provided to decrease the manufacturing cost by obtaining the effect like 9-LAND valve through flow path formation changing means mounting to the 8-LAND valve. A steering gear box valve comprises the oil inlet(42) formed in the housing(40); the input shaft(30) which is formed to be corresponded to the oil inlet; the mounting hole(34) penetrated into one side of the input shaft; and the flow path forming/changing unit(50) developed in the mounting hole. The flow path formation changing means comprises the pitting mounted on the top; the spring mounted on the lower part of fitting; and the stopper located in the lower part of the spring. The spring pitting is contacted with the intimate side of the mounting hole and the fluid flows according to the pressure of the oil in the return portion.
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