Noise reduction structure for toilet tank

Abstract

A noise reduction structure for a toilet tank includes a pressure-assisted flush water tank, a fluid input device, a guide pipe, and a stop member. The fluid input device is disposed on a top of the pressure-assisted flush water tank. The fluid input device is configured to input a fluid having water and air to the pressure-assisted flush water tank. The guide pipe has an input end communicating with an output end of the fluid input device. The stop member includes a stop plate opposite to an output end of the guide pipe. After being stopped by the stop plate, the fluid spreads and flows toward an edge of the stop plate.

What is claimed is: 
     
         1 . A noise reduction structure for a toilet tank, comprising a pressure-assisted flush water tank, a fluid input device, a guide pipe, and a stop member;
 the fluid input device being disposed on a top of the pressure-assisted flush water tank, the fluid input device being configured to input a fluid having water and air to the pressure-assisted flush water tank;   the guide pipe having an input end communicating with an output end of the fluid input device;   the stop member including a stop plate opposite to an output end of the guide pipe, the fluid spreading and flowing toward an edge of the stop plate after being stopped by the stop plate.   
     
     
         2 . The noise reduction structure as claimed in  claim 1 , wherein the fluid input device includes a valve body disposed on the top of the pressure-assisted flush water tank, a one-way air valve, and a Venturi nozzle;
 the valve body has a water inlet, an air inlet, and a fluid outlet;   the one-way valve is disposed in the air inlet;   the Venturi nozzle is disposed in the fluid outlet.   
     
     
         3 . The noise reduction structure as claimed in  claim 1 , wherein the guide pipe is arranged vertically. 
     
     
         4 . The noise reduction structure as claimed in  claim 1 , wherein the input end of the guide pipe is integrally connected to an inner top wall of the pressure-assisted flush water tank. 
     
     
         5 . The noise reduction structure as claimed in  claim 4 , wherein the input end of the guide pipe is flared upward. 
     
     
         6 . The noise reduction structure as claimed in  claim 1 , wherein the stop member further includes an end socket that is detachably connected to the output end of the guide pipe and a connecting piece connected between the stop plate and the end socket. 
     
     
         7 . The noise reduction structure as claimed in  claim 6 , wherein the end socket has a through hole for the guide pipe to pass therethrough and an engaging hook on an inner side of the through hole;
 the output end of the guide pipe has an engaging groove matching with the engaging hook.   
     
     
         8 . The noise reduction structure as claimed in  claim 7 , wherein an upper surface of the engaging hook has a guide curved surface. 
     
     
         9 . The noise reduction structure as claimed in  claim 1 , wherein one end of the stop plate is integrally connected to an inner side wall of the pressure-assisted flush water tank;
 the stop member further includes a reinforcing rib integrally connected between a lower surface of the stop plate and the inner side wall of the pressure-assisted flush water tank.   
     
     
         10 . The noise reduction structure as claimed in  claim 1 , wherein a lower surface of the stop plate is integrally connected to an inner bottom wall of the pressure-assisted flush water tank through a support post.