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.

A spring module includes a spring and a spring bracket for accommodating the spring. The spring bracket may have a base, an end cover and a flexible connecting part connecting the base and the end cover. The spring may be fixed in the spring bracket with a predetermined initial pressure. The spring module may be used in a spring cushion for furniture.

A side rail assembly and a mattress assembly including the side rail assembly about at least a portion of a perimeter of the mattress assembly. The side rail assembly includes a laminate structure including one or more foam layers and one or more fiber layers in a stacked arrangement. The fiber layer can be a non-woven layer.

A bed includes a mattress set, an adjustable bedframe to adjust a position or orientation of the mattress, and a dryer to dry the mattress set. The dryer includes a fan, a filter, and a heater to discharge filtered hot air toward the dryer. A humidity sensing sheet may be provided to sense a humidity level at different regions or areas of the bed, and the dryer may be controlled to supply hot air to regions of the bed having a higher humidity level than a predetermined humidity level or humidity range.

A body part recognition method and apparatus, a smart cushion, a device, and a medium. The method includes: collecting a plurality of vibration signals by using a plurality of sensor units in a two-dimensional sensor array provided in a smart cushion; obtaining statistics about short-term vibration energy characteristic of each of the sensor units on the basis of the vibration signal collected by the each sensor unit; determining a position of the each sensor unit having a highest short-term vibration energy characteristic as a position of the buttocks; and recognizing the positions of body parts other than the buttocks on the basis of the position of the buttocks using a dynamic programming algorithm or/and a greedy algorithm.

An adjustable mattress may have an inner spring core between a top and bottom cover. The bottom cover may have at least one section made of a stretchable material that stretches around the mattress as it bends. The stretchable cover reduces the stress on the inner core for the bending when adjusting the mattress. The inner core may be formed from a spring array surrounded by a foam perimeter rail. Sides of the foam perimeter rail may be formed from individual foam coils.

This disclosure addresses mattresses. In particular, a mattress that includes a plurality of layers. A foam core of the mattress is constructed to have selected characteristics of support and cushioning, the characteristics varying from zone to zone of the mattress. The foam core includes at least three zones; a first zone corresponding generally to an area that supports the head of a user, a second zone corresponding generally to an area that supports the torso of the user, and a third zone corresponding generally to an area that supports the legs and feet of the user. A top surface of the foam core is formed with a plurality of parallel transverse peaks.

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.

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.

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.