Composite jounce bumper for vehicle suspension strut

Details Composite jounce bumper for vehicle suspension strut Composite jounce bumper for vehicle suspension strut

1988-04-11

1989-02-14

Halvosa, George E. A.

Spring devices

Vehicle

Mechanical spring and nonresilient retarder

267 33, 267293, 280668, 280710, F16F 1300

Patent

active

048041696

ABSTRACT:
An improved deflection composite jounce bumper for a vehicle suspension strut. The bumper comprises an inverted metal cup-shaped shell insert embedded within a molded elastomeric body. The body defines a hollow elongated sleeve portion which surrounds a piston rod upper end with its upper portion in turn concentrically surrounded by the annular side wall of the shell. The sleeve portion has a predetermined height such that upon its lower end face impacting on the strut support casing upper end cap an initially high spring dampening rate is achieved. The shell outer side wall is operative to restrict the expansion of the sleeve portion as it undergoes progressive controlled deformation and compaction providing a substantially uniform spring rate while obviating over stressing of the jounce bumper.

REFERENCES:
patent: 3412990 (1968-11-01), Gladstone
patent: 4248454 (1981-02-01), Cotter et al.
patent: 4434977 (1984-03-01), Chiba et al.
patent: 4681304 (1987-07-01), Hassan

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