A SUSPENSION DAMPER ASSEMBLY

摘要

The present invention provides a damping device and a method for assembling the damping device. The damping device includes an outer tube and an inner tube disposed concentrically along a center axis defining a chamber, with a diaphragm located between the inner tube and outer tube dividing the chamber. A gas charge seal is secured over the chamber between the outer tube and inner tube. An inner clamp is in a sealing engagement with the inner tube and holds the diaphragm in place. A waist defines a sealing surface adjacent to outer tube. The diaphragm extends from under the inner clamp and through a “U” shaped turn back towards the waist. An upper clamp axially aligns with the waist and holds the diaphragm into the waist of the outer tube, sealing the diaphragm to the outer tube.

主权项

1. A suspension damper assembly for an automotive shock absorber comprising;
an outer tube of cylindrical shape having an outer tube inner wall and an outer tube outer wall and extending concentrically about a center axis between an open end and a closed end, an inner tube of cylindrical shape having an inner tube inner wall and an inner tube outer wall and disposed concentrically about said center axis and disposed concentrically in said outer tube along said center axis between a first end and a second end, an annular flange disposed on said open end of said outer tube extending radially inwardly toward and perpendicular to said center axis to define an opening to said inner tube at said first end thereof, said inner tube inner wall being spaced radially from said center axis to define a hydraulic chamber of cylindrical shape, said inner tube outer wall being spaced radially from said outer tube inner wall to define a diaphragm chamber of cylindrical shape between said inner tube outer wall and said outer tube inner wall, a diaphragm of cylindrical shape disposed concentrically between said inner tube outer wall and said outer tube inner wall along said center axis for dividing said diaphragm chamber into a high pressure gas chamber disposed between said diaphragm and said inner tube outer wall and a fluid chamber disposed between said diaphragm and said outer tube inner wall, a gas charge seal disposed annularly in said high pressure gas chamber engaging said inner tube outer wall and said outer tube inner wall at said second end of said inner tube, a cap engaging said closed end of said outer tube for sealing said closed end, an inner tube base of cylindrical shape defining an outer periphery disposed in said first end of said inner tube and engaging said cap at said closed end of said outer tube, said inner tube base defining a central cavity of hollow cylindrical shape disposed concentrically in said inner tube base and open to said hydraulic chamber and closed by said cap and defining a plurality of radially disposed channels extending perpendicular to said center axis between said central cavity and said fluid chamber for establishing fluid communication between said hydraulic chamber and said fluid chamber, a piston disposed in sliding and sealing engagement with said inner tube inner wall in said hydraulic chamber, a rod guide of cylindrical shape defining an axial bore and disposed in said open end and in sealing engagement with said inner tube inner wall, a piston rod extending along said center axis and through said bore in said rod guide and connected to said piston for movement therewith, an inner clamp of annular shape holding said diaphragm radially inwardly into sealing engagement with said inner tube outer wall, said diaphragm extending from under said inner clamp and through a ‘U’ shaped turn back toward said open end along outer tube inner wall, an upper clamp of annular shape for holding said diaphragm into said outer tube inner wall for sealing said diaphragm to said outer tube inner wall.