| 摘要 |
PURPOSE: A hydraulic power assistance steering system of a vehicle is provided to prevent oil leak and to reduce manufacturing costs. CONSTITUTION: A hydraulic power assistance steering system of a vehicle comprises a valve housing(210) and a housing coupler(310). The valve housing comprises a pressure port, a return port and a first hanging projection. The pressure port is inserted to a pressure pipe supplying hydraulic fluid. The return pipe delivering the hydraulic fluid to an oil reservoir is inserted and connected to the return port. The first jaw is formed among the pressure port and return port in the outer circumference of a one-side end. The housing coupler comprises a pressure pipe joint hole, a return pipe joint hole and a first hook(320a).
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