Switching device for rim water in low tank toilet

Abstract

A switching device for rim water in a low tank toilet, in which even when a channel pipe is closed according to a change in the level of water that is discharged to the rim through a water supply tube, some water that is supplied from a filler valve is supplied to the rim through a fill-up water inlet hole and the water level in the toilet tank can be controlled by selectively controlling the height of a float, so that the water can be economically and efficiently used, and in which a water level control unit can be lifted up according to the change in the level of water that is discharged to the rim, so that the channel pipe can be closed and the toilet tank can be filled with water.

What is claimed is: 
     
         1 . A switching device for rim water in a low tank toilet, comprising:
 a water supply tube that draws and supplies toilet water from a toilet tank when cold water flowing from a filler valve is supplied to a channel pipe thereof in response to an operation of a flush handle;   an operating chamber that is formed through the water supply tube and defines an operating space for installing a supply water switching unit;   the supply water switching unit that is installed in the operating chamber so that, when toilet water is discharged into a toilet bowl in response to an operation of the flush handle, the supply water switching unit opens the channel pipe of the water supply tube and, when a water level in the toilet tank is reduced due to discharge of toilet water, the supply water switching unit closes the channel pipe of the water supply tube, thereby filling the toilet tank with water;   a fill-up water inlet hole that is formed through a switching unit body of the supply water switching unit in such a way that the fill-up water inlet hole communicates with a guide opening of the supply water switching unit and can supply fill-up water to the toilet bowl;   a water level control unit which includes a support link that is mounted to an end of the supply water switching unit, a wire connection hole that is formed in a first end of the support link, and a plurality of level control holes that are formed in a second end of the support link so that a float can be mounted to one of the level control holes so as to control the water level;   the float that is mounted to one of the level control holes of the water level control unit so that the float can open or close the channel pipe of the water supply tube according to a change in the water level of the toilet tank; and   a rim water supply pipe that is mounted to the water supply tube and supplies water to a rim of the toilet bowl.   
     
     
         2 . The switching device for rim water in the low tank toilet as set forth in  claim 1 , wherein the operating chamber is formed horizontally so that the operating chamber is perpendicular to the channel pipe and communicates with an inlet opening. 
     
     
         3 . The switching device for rim water in the low tank toilet as set forth in  claim 1 , wherein the supply water switching unit comprises:
 the switching unit body that is installed in the operating chamber;   the guide opening for guiding toilet water, the guide opening being formed by opening an interior of the switching unit body in a direction; and   a mounting shaft that is provided on one end of the switching unit body so as to mount the water level control unit to the switching unit body.   
     
     
         4 . The switching device for rim water in the low tank toilet as set forth in  claim 1 , further comprising:
 a water control unit that is operated in such a way that water is drawn from a vertical pipe thereof by pressure of water that is supplied from the filler valve to the rim through the water supply tube, so that the water of the vertical pipe can be supplied to the rim through the water supply tube, and a buoy moves downward according to a reduction in the water level and forcibly lifts up a front end of the water level control unit and closes the channel pipe, thereby filling the toilet tank with water.   
     
     
         5 . The switching device for rim water in the low tank toilet as set forth in  claim 4 , wherein the water control unit comprises:
 a discharge hole formed in a side of the water supply tube;   the vertical pipe mounted to the discharge hole;   a support member that is installed in the vertical pipe and has a through hole in a center thereof;   the buoy that is seated on the support member and moves upward or downward according to a change in the water level inside the toilet tank in such a way that, when the buoy moves downward, the buoy comes into close contact with an upper surface of the support member;   an actuating unit that is coupled to the buoy and is mounted to an upper end of the vertical pipe; and   a lift wire that is connected both to the actuating unit and to the water level control unit.   
     
     
         6 . The switching device for rim water in the low tank toilet as set forth in  claim 5 , further comprising:
 a time control unit that is mounted to the through hole of the support member and controls a flow passage switching time of the water supply tube by controlling an amount of discharge water.