HYDRAULIC PRESSURE SPRING AND METHOD OF PRODUCING THE SAME

摘要

A hydraulic pressure spring 1 includes a hollow cylindrical cylinder 4 having a threaded portion 3 at one end 2 thereof; a closure means 5 which is threadedly engaged with the threaded portion 3 at the one end 2 of the cylinder 4 and closes the one end 2 of the cylinder 4; a closure means 7 which is provided at the other end 6 of the cylinder 4 and closes the other end 6 of the cylinder 4; a compressible liquid 9 which is sealed in an interior 8 of the cylinder 4 and is pressurized to a predetermined pressure; a rod 10 which is passed through the closure means 5 movably in an axial direction A and causes the liquid 9 in the interior 8 of the cylinder 4 to undergo a pressure rise as the rod 10 enters the interior 8 of the cylinder 4; and a piston 11 disposed in the interior 8 of the cylinder 4 and attached to one end of the rod 10.