Adjustable Back Rest Structure

Abstract

An adjustable back rest structure is essentially composed of a soft mat and a plurality of leaning pads. The soft mat at least has a fastening surface, and each of the leaning pads is provided with a locator at the back surface thereof. The soft mat can be covered or laid on a seat, a chair or a bed or the like which is either for sitting or lying. The fastening surface of the soft mat is exposed to be fastened with the locators of the leaning pads thereby fastening the locators respectively at a proper position which matches nearly for individual user's backbone curve thereby enabling the user to sit down or lie down in an easy posture.

1 - 16 . (canceled) 
     
     
         17 . Adjustable back rest structure comprising:
 a soft mat having at least a fastening surface and able to be rolled up;   a plurality of leaning pads each provided with a locator at the back surface thereof; and   a sustentation member having a sustentation surface configured nearly according to the human backbone curve; wherein   said soft mat is covered on, enclosed over, or adhered to the sustentation surface of said sustentation member, and fastening the locators of said leaning pads on the fastening surface of said soft mat such that said leaning pads are fastened to said soft mat.   
     
     
         18 . Adjustable back rest structure of  claim 17 , wherein said sustentation member is a sustention framework. 
     
     
         19 . Adjustable back rest structure of  claim 17 , wherein said sustentation member is a hard plastic board. 
     
     
         20 . Adjustable back rest structure of  claim 17 , wherein the best number of said leaning pads is 2 to 5.