A fixing structure for a cushion layer of a sofa bed is provided. The sofa bed includes a left armrest, a right armrest, and a bed frame. A position of the bed frame is fixedly located between the left armrest and the right armrest, and the bed frame is disposed with an elastic layer and a cushion layer in sequence. The elastic layer includes a plurality of first connecting members spaced apart from each other in a circumferential direction of the elastic layer. A lower surface of the cushion layer includes a plurality of second connecting members spaced apart from each other in a circumferential direction of the cushion layer, and the plurality of first connecting members are connected to the plurality of second connecting members through one or more intermediate connecting members.

A folding mechanism of a sofa bed includes a left armrest, a right armrest, a bed frame, and a locking mechanism. The bed frame includes a first bed frame and a second bed frame. The first bed frame is fixedly connected to the left armrest and the right armrest. The second bed frame is rotatably connected to the left armrest and the right armrest. The left armrest and the right armrest are rotatably connected to the second bed frame through folding hinges. The folding hinge includes a first supporting arm and a second supporting arm which are pivotally connected to each other. The first supporting arm is fixedly connected to the left armrest or the right armrest, and the second supporting arm is fixedly connected to the second bed frame. The locking mechanism locks the first bed frame and the second bed frame in one or more relative positions.

Bedding components and processes for forming the bedding components includes an additive manufacturing process to produce a variable elastomeric lattice structure. The variable elastomeric lattice structure includes variations in strut diameter, cell diameter, strut shape, and combinations thereof. The bedding components include mattresses, pillows, coils, mattress toppers or the like and can also be in the form of inserts to provide different feels in different regions.

An elastic module comprising springs in multiple layers comprises springs in a first layer of the multiple layers, springs in a second layer of the multiple layers, and a flexible material balancing layer. The springs in the first layer are arranged in rows and lines to form a preset shape or staggered in rows to form the preset shape, the springs in the second layer are disposed on the springs in the first layer in a same layout, and the flexible material balancing layer is disposed between the springs in the first layer and the springs in the second layer to connect the springs in the first layer and the springs in the second layer in a lateral direction.

An elastic module comprising springs in multiple layers comprises springs in a first layer of the multiple layers, springs in a second layer of the multiple layers, and a flexible material balancing layer. The springs in the first layer are arranged in rows and lines to form a preset shape or staggered in rows to form the preset shape, the springs in the second layer are disposed on the springs in the first layer in a same layout, and the flexible material balancing layer is disposed between the springs in the first layer and the springs in the second layer to connect the springs in the first layer and the springs in the second layer in a lateral direction.

An elastic module, the elastic module includes upper springs, lower springs, and connection modules, first connection portions are disposed on bases of the upper springs and upper covers of the lower springs, the first connection portions are connected to second connection portions disposed on upper end surfaces and lower end surfaces of the connection modules to connect the upper springs and the lower springs to form elastic units, the upper springs and the lower springs are pre-compression springs wrapped in flexible sleeves, third connection portions are disposed on side surfaces of the connection modules, and multiple of the elastic units are connected to form the elastic module by the third connection portions.

An elastic module, the elastic module includes upper springs, lower springs, and connection modules, first connection portions are disposed on bases of the upper springs and upper covers of the lower springs, the first connection portions are connected to second connection portions disposed on upper end surfaces and lower end surfaces of the connection modules to connect the upper springs and the lower springs to form elastic units, the upper springs and the lower springs are pre-compression springs wrapped in flexible sleeves, third connection portions are disposed on side surfaces of the connection modules, and multiple of the elastic units are connected to form the elastic module by the third connection portions.

A mattress assembly includes a base, coil springs over the base, and a side panel around at least a portion of the coil springs. The side panel includes a spacer fabric including a first knit layer, a second knit layer, and a fibrous material between the first knit layer and the second knit layer. Methods of forming the mattress assembly are also disclosed.

Bedding components and processes for forming the bedding components includes an additive manufacturing process to produce a variable elastomeric lattice structure. The variable elastomeric lattice structure includes variations in strut diameter, cell diameter, strut shape, and combinations thereof. The bedding components include mattresses, pillows, coils, mattress toppers or the like and can also be in the form of inserts to provide different feels in different regions.

A cushion includes interconnected walls that define an array of buckling columns. Each buckling column of the array of buckling columns includes a plurality of buckling points at different elevations along a height of the buckling column. The buckling points buckle under different loads. Methods of designing cushions with a plurality of buckling points are also disclosed.