Toilet bowl

Abstract

Provided is a toilet bowl comprising an upper forming body having an upper surface part that forms an upper surface of the toilet bowl in an installed state; and a lower forming body having an inner wall part joined to an inner edge part of the upper surface part, and an outer wall part joined to an outer edge part of the upper surface part. A space part is formed between the inner wall part and the outer wall part. A dimension in an up-down direction from a lower end of the space part to an upper surface of the inner wall part is larger than a dimension in the up-down direction from an upper end of the space part to the upper surface of the inner wall part.

What is claimed is: 
     
         1 . A toilet bowl comprising:
 an upper forming body having an upper surface part that forms an upper surface of the toilet bowl in an installed state; and   a lower forming body having an inner wall part and an outer wall part, the inner wall part being configured to be joined to an inner edge part of the upper surface part, the outer wall part being configured to be joined to an outer edge part of the upper surface part,   wherein a space part is formed between the inner wall part and the outer wall part, and   wherein a dimension in an up-down direction from a lower end of the space part to an upper surface of the inner wall part is larger than a dimension in the up-down direction from an upper end of the space part to the upper surface of the inner wall part.   
     
     
         2 . The toilet bowl of  claim 1 , wherein an inner edge part of the upper surface of the toilet bowl is an inner edge curved surface bulging upward continuously from an inner end edge of an inner edge joint surface where a lower surface of the inner edge part of the upper surface part and the upper surface of the inner wall part are joined. 
     
     
         3 . The toilet bowl of  claim 2 , wherein an inner surface of an upper end part of the inner wall part has an angle close to vertical. 
     
     
         4 . The toilet bowl of  claim 1 , wherein an outer edge part of the upper surface of the toilet bowl is an outer edge curved surface bulging upward continuously from an outer end edge of an outer edge joint surface where a lower surface of the outer edge part of the upper surface part and an upper surface of the outer wall part are joined. 
     
     
         5 . The toilet bowl of  claim 4 , wherein the outer edge joint surface has an inclined part inclined obliquely downward from the outer end edge toward an inside. 
     
     
         6 . The toilet bowl of  claim 2 , wherein the inner edge joint surface has an inclined part inclined obliquely downward from the inner end edge toward an outside. 
     
     
         7 . The toilet bowl of  claim 1 , wherein the lower surface of the inner edge part of the upper surface part is larger in dimension in an inner-outer direction than the upper surface of the inner wall part, and wherein the lower surface of the outer edge part of the upper surface part is larger in dimension in the inner-outer direction than the upper surface of the outer wall part. 
     
     
         8 . A toilet bowl comprising:
 an upper forming body having an upper surface part that forms an upper surface of the toilet bowl in an installed state; and   a lower forming body having an inner wall part and an outer wall part, the inner wall part being configured to be joined to an inner edge part of the upper surface part, the outer wall part being configured to be joined to an outer edge part of the upper surface part,   wherein, in a portion above a water discharge port in a bowl part hanging down from the inner edge part of the upper surface part, a dimension of the lower forming body in an up-down direction is larger than a dimension of the upper forming body in the up-down direction.