A mattress includes a spring extending between first and second points to provide a first spring rate in a first direction. A polymer fiber structure is provided between the first and second points and adjoins the spring. The polymer fiber structure includes fibers interlinked with one another to provide the second spring rate in the first direction. An example method of manufacturing a mattress is provided that includes arranging springs to provide a mattress innerspring. A polymer fiber structure is introduced in a first state to the innerspring to provide an assembly. The assembly is further processed and the polymer fiber structure is simultaneously altered from the first state to a second state.

A mattress arrangement, such as a bed arrangement (1), having adjustable firmness is disclosed. The mattress arrangement comprises an upper mattress (3) and a lower mattress (4) being arranged beneath said upper mattress (3). At least one side (41) of the lower mattress (4) is moveable in relation to an opposite side (42) of the lower mattress (4), the lower mattress (4) thereby being expandable into an expanded state, having a lower firmness, and compressible into a contracted state, having a higher firmness. A support layer (6) is arranged between the upper mattress (3) and the lower mattress (4), to partly support the upper mattress (3), and arranged overlying the at least one moveable side (41) of the lower mattress (4). Hereby, at least one compartment is formed beneath the upper mattress (3), wherein the compartment(s) is at least partly empty when the lower mattress (4) is in the contracted state and at least partly filled when the lower mattress (4) is in the expanded state.

An elastic mattress partitioning softness and hardness comprises at least two groups of spring modules with different elasticities and hardnesses. An inner side of each of the spring modules comprises a plurality of spring members that are spliced together, and each of the at least two groups of the spring modules comprises the plurality of spring members with at least one elasticity and hardness. Each of the spring modules defines an interlaced or array arrangement by the plurality of spring members through the connecting structures, and the spring modules with the different hardnesses in the elastic mattress are assembled in any section in the elastic mattress. A hardness of one or more of the plurality of spring members disposed in an edge section of the elastic mattress is greater than a hardness of one or more of the plurality of spring members in another section of the elastic mattress.

The shock-absorbing buffer pad comprises an external compression body, an internal guide slot and an inserted adjusting component. The external compression body has a top part, a bottom part and a compression elastic component. The top part is configured with an inserting hole. The bottom part is located beneath the top part. The compression elastic component is connected between the top part and the bottom part. The compression elastic component has a folding part. When the top part is pressed, the compression elastic component will accumulate an inverse elastic force. The internal guide slot is formed on the bottom part of the external compression body and located inside the internal space of the external compression body. The internal guide slot has an inserting slot exposing upward. The interior of the inserting slot is formed with a stopping block. The inserted adjusting component has an inserting cylinder, which can be inserted into the inserting hole. The top surface of the inserting cylinder is positioned outside the inserting hole. The bottom part of the inserting cylinder is divided into multiple abutting walls corresponding to the stopping block.

A tapered spring with a changeable top size includes a spring, a tapered fixed sleeve, and an adjustment member. The adjustment member is disposed at a top of the tapered fixed sleeve, and the top of the tapered fixed sleeve is a small end of the tapered fixed sleeve. The adjustment member includes an expandable portion configured to be expanded and contracted along a horizontal direction on a top end surface of the adjustment member, and the expandable portion is configured to be expanded outward to form an outward expansion surface on the top end surface of the adjustment member. When the expandable portion is expanded, a projection of the expandable portion in a vertical direction is less than or equal to a projection of a bottom of the tapered fixed sleeve, and the bottom of the tapered fixed sleeve is the large end of the tapered fixed sleeve.

A spring structure with adjustable hardness, the spring structure with the adjustable hardness includes a spring, an adjustment member, and a wrapping member, the wrapping member is used for wrapping the spring, the adjustment member is used for adjusting a pre-compression force of the spring, the adjustment member is disposed on one end of the spring to squeeze the one end of the spring, the adjustment member includes a rotating member, a moving member, and a support member, the moving member is movably mounted on the support member, the rotating member is connected to the support member by a linkage, the rotating member rotates to drive the support member to rotate, and the moving member moves up and down along the support member to squeeze the spring by rotating the support member.

Adjustable sleeping system with force control. At least one example embodiment is a method of operating a sleeping system, the method including: sensing an area of a sleeping surface of the sleeping system, the area upon which a person resides, the sensing by a bed controller communicatively coupled to an array of adjustable spring assemblies arranged such that a top of each adjustable spring assembly defines an upper surface parallel to the sleeping surface; and driving a plurality of the adjustable spring assemblies being the adjustable spring assemblies beneath the area, the driving to control force distribution among the plurality of the adjustable spring assemblies.

Spring modules for an adjustable sleeping system. At least some of the example embodiments are spring modules comprising: a spring rail, and a plurality of adjustable spring assemblies spaced along the length of the spring rail. Each adjustable spring assembly may comprise: a motor with a stator coupled to the spring rail via a load cell, a lead screw coupled to a rotor of the motor, and the lead screw extending above an upper surface of the spring rail, a spring plate coupled to the lead screw, and a main spring coupled to the spring plate. A tubular sock disposed over the main spring, and a compliant insert can be disposed between adjacent main springs to inhibit side loading and maintain the main spring in upright relation with the spring rail.