Toilet having a flapper valve closing device

Abstract

A toilet include a toilet water tank, a flapper valve and a float pusher that supports closing the flapper valve properly and moves up and down in the toilet water tank by buoyancy force, a vertical guide that guides the float pusher in moving up and down along the vertical guide. The flapper valve is adapted to open for releasing water from a toilet water tank and to close for the purpose of refilling water in the toilet water tank. The float pusher includes a through hole, a bottom surface, a top surface, an outer surface connecting the top surface and the bottom surface and a water recess that is adapted to contain water. The water recess is provided on the top surface. The through hole is provided between the top surface and the bottom surface.

1 . A toilet having a toilet water tank and a flapper valve comprising:
 a) a float pusher that is adapted to support closing a flapper valve properly wherein the float pusher is adapted to move up and down in the toilet water tank by buoyancy force;   b) a vertical guide that guides the float pusher in moving up and down along the vertical guide; and   c) the flapper valve that is adapted to open for releasing water from a toilet water tank and to close for the purpose of refilling water in the toilet water tank;   
     wherein the float pusher comprises a through hole, a bottom surface, a top surface, an outer surface connecting the top surface and the bottom surface and a water recess that is adapted to contain water, wherein the water recess is provided on the top surface, wherein the through hole is provided between the top surface and the bottom surface, wherein a diameter of the through hole is larger than a diameter of the vertical guide, wherein the float pusher is assembled to move along the vertical guide, wherein the float pusher pushes to close properly the flapper valve by the force of its own weight and a weight of contained water in the water recess at a lower level of water. 
   
   
       2 . The toilet of  claim 1 , wherein the water recess of the through hole comprises a first annular step, wherein the first annular step is adjacent to the top surface of the float pusher. 
   
   
       3 . The toilet of  claim 1 , wherein the vertical guide is an overflow pipe of the toilet. 
   
   
       4 . The toilet of  claim 1 , further comprising a cross bracket that is attached to the toilet water tank, wherein the cross bracket comprises a guide rod, wherein the guide rod is attached to the cross bracket, wherein the position of the guide rod on the cross bracket is adjustable. 
   
   
       5 . The toilet of  claim 1 , wherein the float pusher comprises a cylindrical body. 
   
   
       6 . The toilet of  claim 1 , wherein the through hole is located at the center of the top surface. 
   
   
       7 . The toilet of  claim 1 , further comprising a guide wall that surrounds the outer surface of the float pusher, wherein the through hole is located offset from the center of the top surface. 
   
   
       8 . The toilet of  claim 1 , wherein the through hole comprises one or more longitudinal projected lines. 
   
   
       9 . The toilet of  claim 1 , wherein the through hole comprises one or more flat portions. 
   
   
       10 . The toilet of  claim 1 , wherein the bottom surface comprises a flat surface. 
   
   
       11 . The toilet of  claim 1 , wherein the bottom surface comprises a concave surface. 
   
   
       12 . The toilet of  claim 1 , wherein the bottom surface comprises a convex surface.