Combination mattress

Abstract

The present disclosure discloses a combination mattress, including a first layer and a second layer which has a smaller rigidity than that of the first layer and is stacked on the first layer, the thickness of the first region in the first layer corresponding to the shoulder of a human body is smaller than that of a second region corresponding to the waist of a human body the overall rigidity of the region corresponding to the shoulders of the human body in the combination mattress is smaller than the overall rigidity of the region corresponding to the waist of the human body.

What is claimed is: 
     
         1 . A combination mattress, comprising:
 a first layer, comprising a first region corresponding to the shoulder of a human body and a second region corresponding to the waist of the human body, and the thickness of the first region being smaller than the thickness of the second region; and   a second layer, the rigidity of the second layer being smaller than the rigidity of the first layer, the second layer stacking on the first layer, and the overall rigidity of the region corresponding to the shoulder of the human body in the combination mattress being smaller than the overall rigidity of the region corresponding to the waist of the human body in the combination mattress.   
     
     
         2 . The combination mattress according to  claim 1 , wherein the first region is defined with a dent, a protrusion is protruded from one side of the second layer facing the first layer, and the protrusion is embedded in the dent. 
     
     
         3 . The combination mattress according to  claim 2 , wherein a side wall of the dent is an inclined plane, and the opening of the dent gradually enlarges in a direction from the bottom wall of the dent towards the second layer. 
     
     
         4 . The combination mattress according to  claim 2 , wherein the dent passes through two opposite sides of the first layer. 
     
     
         5 . The combination mattress according to  claim 1 , wherein there are two first regions, and the two first regions are symmetrically distributed with regard to the second region. 
     
     
         6 . The combination mattress according to  claim 2 , wherein there are two first regions, and the two first regions are symmetrically distributed with regard to the second region. 
     
     
         7 . The combination mattress according to  claim 3 , wherein there are two first regions, and the two first regions are symmetrically distributed with regard to the second region. 
     
     
         8 . The combination mattress according to  claim 4 , wherein there are two first regions, and the two first regions are symmetrically distributed with regard to the second region. 
     
     
         9 . The combination mattress according to  claim 1 , wherein the surface of the second layer facing away from the first layer is parallel to the horizontal plane, and the surface of the first layer facing away from the second layer is parallel to the horizontal plane. 
     
     
         10 . The combination mattress according to  claim 1 , wherein the first layer is detachably connected with the second layer. 
     
     
         11 . The combination mattress according to  claim 1 , wherein a support layer is further provided and stacked under the first layer, and the rigidity of the support layer is greater than the rigidity of the first layer. 
     
     
         12 . The combination mattress according to  claim 11 , wherein the combination mattress further comprises a cover body, the cover body is defined with an accommodating cavity, and the first layer and the second layer are received and stacked up in the accommodating cavity. 
     
     
         13 . The combination mattress according to  claim 12 , wherein the support layer is received in the accommodating cavity. 
     
     
         14 . A combination mattress, comprising:
 a first layer, comprising a first region corresponding to the shoulder of a human body and a second region corresponding to the waist of the human body, and the thickness of the first region being smaller than the thickness of the second region; and   a second layer, the rigidity of the second layer being smaller than the rigidity of the first layer, and the second layer stacking on the first layer, and the surface of the second layer facing away from the first layer is parallel to the horizontal plane, the surface of the first layer facing away from the second layer is parallel to the horizontal plane;   the first region is defined with a dent, a protrusion is protruded from one side of the second layer facing the first layer, and the protrusion is embedded in the dent.   
     
     
         15 . The combination mattress according to  claim 14 , wherein there are two first regions, and the two first regions are symmetrically distributed with regard to the second region. 
     
     
         16 . The combination mattress according to  claim 14 , wherein a side wall of the dent is an inclined plane, and the opening of the dent gradually enlarges in a direction from the bottom wall of the dent towards the second layer. 
     
     
         17 . The combination mattress according to  claim 15 , wherein a side wall of the dent is an inclined plane, and the opening of the dent gradually enlarges in a direction from the bottom wall of the dent towards the second layer. 
     
     
         18 . The combination mattress according to  claim 16 , wherein the dent passes through two opposite sides of the first layer. 
     
     
         19 . The combination mattress according to  claim 18 , wherein the first layer is detachably connected with the second layer. 
     
     
         20 . The combination mattress according to  claim 19 , wherein a support layer is further provided and stacked under the first layer, and the rigidity of the support layer is greater than the rigidity of the first layer.