Patent ID: 6158559
Filing Date: 2000-12-12
Classification: F16C,F16F

Abstract:
A single cylinder type hydraulic damper or gas spring, comprising:a cylinder;a piston rod inserted in the cylinder such that it is free to move;a seal member; anda rod guide,wherein said piston rod is guided such that it is free to slide by the seal member and the rod guide at one end of said cylinder,wherein said rod guide comprises:a cylindrical engaging part which engages with the end of said cylinder,a cylindrical bearing part which guides said piston rod, anda low friction bearing layer fixed to an inner circumferential surface of said cylindrical bearing part and which is in contact with an outer circumference of said piston rod,wherein said bearing layer is previously fixed only at a position of a base material comprising a thin steel plate which becomes said cylindrical bearing part, andwherein said rod guide is formed in a one-piece construction by press-molding or deep-drawing said base material, together with said bearing layer fixed thereto.