CONSTRUCTION OF VALVE SYSTEM FOR LEVEL CONTROLLING DEVICE OF HYDRAULIC SHOCK ABSORBER FOR VEHICLE

摘要

PURPOSE:To integrally assemble a valve system in a holder beforehand and simply and promptly assemble the valve system in an oil passage by connecting the holder that surrounds the outside of a ball valve with a valve seat to and from which the ball valve connects and separates, and interposing it in the opened oil hole of the oil passage drilled in a main body. CONSTITUTION:The cap 14 of a rear cushion 1 is connected to a level control ling changeover valve unit 60 through an oil passage 51, and further lead to a valve system 66 that generates compression side damping force through an oil passage 65. In this case, the oil passage 65 perpendicularly branches off downward before it reaches the valve system 66 and reaches an oil receiving room D through an oil passage 67, and a main valve system including a first check valve 68. And, the first check valve 68 is seated on a valve seat 70 by a spring 69 and energized to always close the opening to the oil receiving room D, and the spring 69 is forced to seat on a holder 71 that engages with the cylindrical extension of the valve seat 70, namely, the valve 68 and the valve seat 70 are assembled to the holder 71 to unite them in a body, and interpose to the cylindrical hole of the oil passage.