Foldable toilet step stool

Abstract

A foldable toilet step stool includes a stool hoard and two supporting boards. The two supporting hoards are respectively rotatably arranged on two ends of the stool board. First rotating pieces and second rotating pieces are fixedly arranged on the two ends of the stool board. Third rotating pieces and fourth rotating pieces are fixedly arranged on the two supporting hoards. Each first rotating piece is pivotally connected to a corresponding third rotating piece. Each second rotating piece is pivotally connected to a corresponding fourth rotating piece. A clamping piece is arranged between each first rotating piece and each third rotating piece. Each clamping piece is configured to control a rotation of a corresponding supporting board.

What is claimed is: 
     
         1 . A foldable toilet step stool, comprising a stool board and two supporting boards, the two supporting boards are respectively rotatably arranged on two ends of the stool board;
 wherein first rotating pieces and second rotating pieces are fixedly arranged on the two ends of the stool board; third rotating pieces and fourth rotating pieces are fixedly arranged on the two supporting boards; each first rotating piece is pivotally connected to a corresponding third rotating piece; each second rotating piece is pivotally connected to a corresponding fourth rotating piece; and a clamping piece is arranged between each first rotating piece and each third rotating piece; each clamping piece is configured to control a. rotation of a corresponding supporting board.   
     
     
         2 . The foldable toilet step stool according to  claim 1 , wherein the first rotating pieces comprise first connecting portions and second connecting portions; the third rotating pieces comprise third connecting portions and fourth connecting portions; each first connecting portion is connected with a corresponding third connecting portion through a first rotating shaft; each second connecting, portion is connected with a corresponding fourth connecting portion through a second rotating shaft; one end of each clamping piece passes through a corresponding third connecting portion and a corresponding first connecting portion; another end of each clamping piece is connected with a corresponding second connecting portion or a corresponding fourth connecting portion. 
     
     
         3 . The foldable toilet step stool according to  claim 2 , wherein each clamping piece comprises a pressing portion, a sliding portion, a fixing portion, and a spring sleeved on the fixing portion; each spring abuts against a corresponding second connecting portion or a corresponding fourth connecting portion; a diameter of each fixing portion is greater than a diameter of each sliding portion; the first connecting portions comprise arc-shaped sliding holes and circular fixing holes; each arc-shaped sliding holes matches each sliding portion; each circular fixing hole matches each fixing portion; each arc-shaped sliding hole is communicated with a corresponding circular fixing hole. 
     
     
         4 . The foldable toilet step stool according to  claim 3 , wherein each fixing portion is a self-locking structure. 
     
     
         5 . The foldable toilet step stool according to  claim 1 , wherein each clamping piece is a positioning rod; the first rotating pieces and the third rotating pieces comprise positioning holes; each positioning rod is inserted into corresponding positioning holes.