Spring sheet structure

Details Spring sheet structure Spring sheet structure

1995-09-22

1997-04-15

Oberleitner, Robert J.

Spring devices

Coil

Including end thrust member

267221, 280668, F16F 112

Patent

active

056201710

ABSTRACT:
A spring sheet structure is disclosed which enables the prevention of generation of abnormal sound between a coil spring and a spring sheet. A positioning portion is formed at two regions at predetermined positions of a lower spring sheet. The positioning portion is formed by a first curved surface portion whose radius of curvature is slightly less than a radius of a minimum wire diameter coil spring, and a second curved surface portion whose radius of curvature is slightly greater than a radius of a maximum wire diameter coil spring. Further, an outer diameter dimension E of a base portion is set to be less than inner diameter dimensions F, F' of the coil spring. A wound seat portion of the coil spring can be reliably positioned in a point-contacting state, and generation of abnormal sound can be prevented.

REFERENCES:
patent: 2655370 (1953-10-01), Schulze
patent: 4362294 (1982-12-01), Schobbe et al.
patent: 4562997 (1986-01-01), Iwata et al.
patent: 4712778 (1987-12-01), Newman
Japanese Patent Information Organization, vol. 9-32 No. 84-008491, Jul. 1984 (see Appln. Pg. 2).

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