Cushion member and seat structure
First Claim
1. A cushion member comprising:
- a multilayer structure including at least one intermediate layer and an upper layer and a lower layer stacked above and below the intermediate layer, whereinthe intermediate layer includes a resin foam with a predetermined thickness;
the upper layer and the lower layer are fixed to a front surface side and a back surface side of the resin foam included in the intermediate layer, respectively;
the cushion member is provided as a tensile structure by being stretched between frames disposed apart from each other by a predetermined distance so that the upper layer on a front side has higher tension than the lower layer in a plane direction;
at least one of the upper layer or the lower layer comprises a three-dimensional cloth;
the three-dimensional cloth includes a pair of ground knits disposed apart from each other and a number of connecting strands for connecting the pair of ground knits by going back and forth between the pair of ground knits; and
a part of the resin foam included in the intermediate layer in the thickness direction intrudes into a gap at least between ground strands forming one ground knit from one ground knit side of the three-dimensional cloth adjacent to the intermediate layer, and an amount of intrusion is in a range of not having contact with at least a part of the other ground knit of the three-dimensional cloth.
1 Assignment
0 Petitions
Accused Products
Abstract
A cushion member includes an intermediate layer, and an upper layer and lower layer stacked and fixed thereto. The cushion member is fixed to a frame by bending an end part of the cushion member so that the upper layer comes to the front side and the lower layer comes to the back side. The intermediate layer is subjected to shear force and the upper layer and the lower layer are subjected to compressive and tensile stress. With the spring characteristic of the intermediate layer, residual stress of the tension and compression is applied to the upper and lower layers from the intermediate layer. Thus, the cushion member can have a restoring property, generation of creases during no load application can be reduced, permanent setting is made less likely, and a compression characteristic in the thickness direction is increased.
12 Citations
11 Claims
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1. A cushion member comprising:
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a multilayer structure including at least one intermediate layer and an upper layer and a lower layer stacked above and below the intermediate layer, wherein the intermediate layer includes a resin foam with a predetermined thickness; the upper layer and the lower layer are fixed to a front surface side and a back surface side of the resin foam included in the intermediate layer, respectively; the cushion member is provided as a tensile structure by being stretched between frames disposed apart from each other by a predetermined distance so that the upper layer on a front side has higher tension than the lower layer in a plane direction; at least one of the upper layer or the lower layer comprises a three-dimensional cloth; the three-dimensional cloth includes a pair of ground knits disposed apart from each other and a number of connecting strands for connecting the pair of ground knits by going back and forth between the pair of ground knits; and a part of the resin foam included in the intermediate layer in the thickness direction intrudes into a gap at least between ground strands forming one ground knit from one ground knit side of the three-dimensional cloth adjacent to the intermediate layer, and an amount of intrusion is in a range of not having contact with at least a part of the other ground knit of the three-dimensional cloth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification