A spring is provided that exhibits a variable and non-linear loading response upon compression. The spring comprises a continuous wire having a lower end convolution, an upper end convolution, and a plurality of helical intermediate convolutions. The upper end convolution, the lower end convolution, and the helical intermediate convolutions each have a respective diameter, with the continuous wire further defining a pitch between the various convolutions. In the spring, one or more of the diameters of the convolutions or one or more of the pitches varies along the length of the continuous wire such that the spring exhibits a non-linear loading response upon compression. A mattress is further provided and includes a plurality of the springs arranged in a matrix.

A cushioning element includes a plurality of interconnected walls that define hollow columns. The interconnected walls include voids. The voids have shapes, sizes, and positions that reduce an overall density and weight of the cushioning element without sacrificing its cushioning characteristics. The cushioning element may even be thinner than an existing, conventionally configured cushioning element while providing the same or improved cushioning. In some embodiments, the cushioning element may also include enlarged junctions between interconnected walls or other stiffening features. Methods for designing such cushioning elements are also disclosed.

A multi-zone mattress comprising a top layer, an intermediate layer and a bottom layer disposed in substantially parallel relationship relative to each other including a first plurality of zones each having a first firmness profile to support a person thereon separated by a second plurality of zones each having a second firmness profile less than the firmness of the first firmness profile of the first plurality of zones, the first plurality of zones and the second plurality of zones each cooperatively formed by corresponding sections of the top layer, intermediate layer and bottom layer disposed in substantially parallel alignment relative to each other.

A mattress for bed frame with bow structure includes a fixed seat and multiple of arc-shaped elastic rods, the mattress is formed by staggered connection of horizontally arranged weft lines and longitudinally arranged warp lines, and the weft lines are unevenly distributed in high-density regions and low-density regions; the multiple of arc-shaped elastic rods are sequentially installed side by side on the fixed seat and in the same direction as the weft lines; the free ends of each of the arc-shaped elastic rods are connected on the edge of the mattress to tension and set up the mattress above the arc-shaped elastic rods. When a user sits on or lies on the mattress, an region of the mattress bearing weight matches the shape of a use's body in contact with the mattress to deform, thereby providing good elastic support for each part of the body.

A sofa bed includes: a plurality of elastic modules; a body frame having slide rails arranged thereon; and armrest frames disposed at two sides of the body frame along a longitudinal direction of the body frame, respectively. The slide rails on the body frame are configured to enable the plurality of elastic modules to be mounted on the body frame from an outside of the body frame and to slide thereon to predetermined mounting positions, such that the body frame at one side facing the user is provided with the plurality of elastic modules. The angle between the seat and the backrest portion can be locked for improved operation. The elastic modules, which can be easily installed and uninstalled, can improve the comfort of the sofa bed.

A bed according to an embodiment may include a topper, at least one firmness adjuster provided under the topper, and a bedframe configured to have an adjustable position and to support the firmness adjuster. There may be a plurality of firmness adjusters corresponding to a plurality of areas of the bed, and each firmness adjuster may include a plurality of cushions provided in a cushion case and a drive to adjust the firmness of the plurality of cushions. The drive may change a position of a first spring relative to a second spring in each of the cushions to change a perceived firmness by a user lying on top of the topper and the firmness adjusters. A dryer may be provided under the bedframe to keep the cushions and topper dry.

An elastic module unit for a pad or furniture may include a fixed bottom plate and a plurality of elastic modules disposed on the fixed bottom plate, the fixed bottom plate including splicing sides arranged opposite to each other and end sides arranged opposite to each other. Each of the end sides includes a plurality of connectors having a rotary detent member and/or an engagement member. The rotary detent member is configured to swing about a pivot axis so that it releasably engages an engagement member of an adjacent elastic module unit. The engagement member is configured to releasably engage a rotary engagement member of an adjacent elastic module unit.

The present invention provides a spring module for a spring cushion of furniture and a spring cushion having the same, the spring module may comprise a spring and a spring bracket for accommodating the conical spring, and the spring bracket may comprise a base, an end cover and a flexible connecting part connected therebetween, the spring may be fixed in the spring bracket with a predetermined initial pressure. The present invention further relates to a spring cushion having the spring module.

The present disclosure provides a spring module for a spring cushion of furniture and a spring cushion having the same, the spring module may comprise a spring and a spring bracket for accommodating the conical spring, and the spring bracket may comprise a base, an end cover and a flexible connecting part connected therebetween, the spring may be fixed in the spring bracket with a predetermined initial pressure. The present disclosure further relates to a spring cushion having the spring module.