AIR CELL PROVIDED FOR A MATTRESS
An air cell provided for a mattress has two independent air chambers that are manufactured by die-casting at a same time. One of the independent air chambers is an adjustable air chamber, in which air can be alternately inputted and outputted through a pneumatic member to have the effect of promoting blood circulation of a person. The other independent air chamber is a supporting air chamber, which can support the body of the person with permanent air therein whenever the adjustable air chamber loses its function.
1 . An air cell provided for a mattress, the air cell comprising a pad member and at least two pneumatic members disposed in the pad member, with the pad member formed from a single continuous sheet having a periphery and of a constant thickness within the periphery, with the pad member having an edge-welded seam and a parting-welded seam both of which are formed by hot forming the single, continuous sheet together, with the edge-welded seam directly welding together the periphery of the single, continuous sheet forming the pad member in a folded condition and defining a enclosed space within the pad member, with the two pneumatic members linking the enclosed space with an outside environment, with the parting-welded seam welding the single, continuous sheet forming the pad member together directly within the periphery of the pad member in the folded condition and further dividing the enclosed space into two independent air chambers, and with each pneumatic member being individually disposed on a corresponding one of the independent air chambers.
2 . The air cell provided for a mattress according to claim 1 , wherein one of the independent air chambers is an adjustable air chamber and the other is a supporting air chamber.
3 . The air cell provided for a mattress according to claim 2 , wherein the adjustable air chamber is able to change its volume by selectively charging and discharging air through the pneumatic member.
4 . The air cell provided for a mattress according to claim 2 , wherein the pneumatic member disposed on the supporting air chamber further has a leakproof element mounted at one end of the pneumatic member to prevent air leakage from the supporting air chamber through the pneumatic member and to maintain a certain amount of air in the supporting air chamber permanently without charging and discharging air.