Shock absorber
AssigneeHitachi Automotive Systems, Ltd.
InventorShigeo Katayama
Life of this patent
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Abstract
A shock absorber including a piston inserted into a cylinder (2) having a hydraulic oil sealed therein. An outer tube (3) is provided around the outer periphery of the cylinder to form a reservoir (4) therebetween. A bottomed circular cylindrical casing (25) is joined to a side surface portion of the outer tube, and a damping force control valve (27) is housed in the casing. The bottomed circular cylindrical casing has a bottom (25A) formed with a joint surface (25B) curved along the outer peripheral surface of the outer tube and a flat inner surface (25C). The casing is integrally formed by forging.
Claims7
1-4. (canceled)
A tube-type shock absorber having a circular cylindrical cylinder part having a working fluid sealed therein, a piston slidable in the cylinder part, a piston rod connected to the piston and extended to an outside of the cylinder part, a circular cylindrical casing joined to a side surface portion of the cylinder part, and a damping force generating device housed in the casing to generate a damping force by controlling a flow of working fluid induced by sliding movement of the piston;
- wherein the casing is in a shape of a circular cylinder with a bottom, the bottom having an inner surface including a planar portion, the bottom having a joint surface that is joined to the cylinder part, the joint surface being curved along an outer peripheral surface of the cylinder part.
Dependencies are inferred from the claim text.