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Seat cushion and method of manufacturing the same

Imported: 23 Feb '17 | Published: 03 Jun '03

Kazushige Ebe

USPTO - Utility Patents

Abstract

A seat cushion is formed of a lower body and an upper body. The lower body is made of a polyurethane chip molded product containing fibrillated polyurethane chips with radial projections and a binder for binding the fibrillated polyurethane chips. The polyurethane chip molded product has 25 percent ILD hardness of 1,000 to 5,000 N and a density of 150 to 300 kg/M

3. The upper body is made of soft polyurethane foam molded on the lower body. The upper body has 25 percent ILD hardness of 60 to 300 N and a density of 20 to 80 kg/M

3.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1

a is a perspective view showing a passenger seat in a vehicle according to an embodiment of the present invention and FIG. 1

b is a sectional view taken along a line B—B of FIG. 1

a; and

FIG. 2 is a side view schematically showing a situation in a vehicle cabin in case of a frontal collision of a vehicle.

Claims

1. A seat cushion comprising:

2. A seat cushion according to claim 1, wherein said polyurethane chip molded product is made only by the fibrillated polyurethane chips with the radial projections and the binder.

3. A seat cushion according to claim 1, wherein said polyurethane chip molded product further includes spherical polyurethane chips together with the fibrillated polyurethane chips.

4. A method of manufacturing a seat cushion, comprising: