Sewage discharge device of variable water-saving toilet

Abstract

The present invention relates to a sewage discharge device of a variable water-saving toilet, the device discharging sewage in a bowl to the outside by the load of an auxiliary tank, when a part of tap water branches off from a tap water inflow path such that the tap water stored in the auxiliary tank provided around the outer periphery of a sewage discharge pipe of the toilet reaches a predetermined amount or more.

What is claimed is: 
     
         1 . A sewage discharge device for a variable type water-saving flush toilet, comprising:
 a toilet body ( 100 ) installed on a floor or a wall, the toilet body ( 110 ) including a flushing water inlet port ( 111 ) formed therein so as to allow for inflow of flushing water flowing through a flushing water inflow passage ( 101 ) into which the flushing water is introduced from the outside, a bowl ( 110 ) opened at a top thereof and configured to store a certain amount of sewage therein, a connection tube ( 120 ) configured to discharge sewage from the bowl ( 110 ), and a cover part ( 140 ) configured to cover a rear portion of the bowl ( 110 ) and allow sewage discharged through the connection tube ( 120 ) to be induced to a bottom tube ( 130 );   a corrugated tube ( 200 ) connected to the connection tube ( 120 ), the corrugated tube ( 200 ) being configured to form a flow path of sewage drained from the bowl ( 110 ) and being capable of bent in one direction;   a flushing water branching unit ( 300 ) fluidically connected with the flushing water inflow passage ( 101 ) and to allow a part of the flushing water flowing through the flushing water inflow passage ( 101 ) to be branched when the flushing water is introduced into the bowl ( 110 );   a sewage discharge tube ( 400 ) comprising: a main discharge tube ( 410 ) connected to the corrugated tube ( 200 ) and configured to discharge sewage to the outside: and an auxiliary tank ( 420 ) disposed on an outer circumferential surface of the main discharge tube ( 410 ) and configured to store therein flushing water branched from the flushing water branching unit ( 300 ) and supplied thereto, the auxiliary tank having an auxiliary discharge hole ( 422 ) formed thereon to allow flushing water stored in a lower portion thereof to be drained,   wherein when the flushing water branched from the flushing water branching unit ( 300 ) reaches a preset amount, the auxiliary tank ( 420 ) is downwardly moved by its own weight so that sewage is discharged to the outside through the main discharge tube ( 410 ), and the time during which sewage is discharged to the outside through the main discharge tube ( 410 ) is delayed in proportion to a discharge speed at which the flushing water supplied to the auxiliary tank ( 420 ) is drained through the auxiliary drain hole ( 422 ); and   an elastic unit ( 500 ) configured to elastically interconnect the connection tube ( 120 ) and the sewage discharge tube ( 400 ), and to allow the sewage discharge tube ( 400 ) to be oriented in an upright state by an elastic force of the elastic unit upon the interruption of the supply of flushing water.   
     
     
         2 . The sewage discharge device for a variable type water-saving flush toilet according to  claim 1 , wherein the elastic unit ( 500 ) comprises:
 a first hanging member ( 510 ) mounted on a connection tube ( 115 ) interconnecting the connection tube ( 120 ) and the corrugated tube ( 200 ) so as to be protruded to both sides, the first hanging member having a pair of first hanging holes ( 511 ) formed at each of both end portions thereof;   a pair of second hanging members ( 520 ) mounted on both sides of the sewage discharge tube ( 400 ), each of the second hanging members ( 520 ) having a pair of second hanging holes ( 521 ) formed thereon so as to be spaced apart from each other; and   a pair of elastic members ( 530 ) each connected at one end thereof to any one of the pair of second hanging holes ( 521 ) of each of the pair of second hanging members ( 520 ) and connected at the other end thereof to each of the pair of first hanging holes ( 511 ) of each of both end portions of the first hanging member ( 510 ).   
     
     
         3 . The sewage discharge device for a variable type water-saving flush toilet according to  claim 1 , further comprising an odor prevention unit ( 600 ) disposed inside the corrugated tube ( 200 ) or the sewage discharge tube ( 400 ), the odor prevention unit being opened when the sewage flows through the corrugated tube ( 200 ) or the sewage discharge tube ( 400 ) and closed when the sewage does not flow therethrough. 
     
     
         4 . The sewage discharge device for a variable type water-saving flush toilet according to  claim 1 , wherein the flushing water branching unit ( 300 ) comprises:
 a branching corrugated tube ( 310 ) coupled at an upper end thereof to the flushing water inflow passage ( 101 ) and connected at a lower end thereof to the auxiliary tank ( 420 ); and   a branched water inlet part ( 320 ) connected to the upper end of the branching corrugated tube ( 310 ) and disposed at the inside of the flushing water inflow passage ( 101 ).   
     
     
         5 . The sewage discharge device for a variable type water-saving flush toilet according to  claim 1 , wherein the flushing water branching unit ( 300 ) further comprises an odor prevention valve ( 321 ) disposed at an entrance portion of the branched water inlet part ( 320 ), and configured to be opened by a hydraulic pressure when flushing water is supplied to the flushing water inflow passage ( 101 ) and closed by the odor prevention valve's own weight when the supply of the flushing water is interrupted so that foul toilet odor is prevented from flowing into the flushing water inflow passage ( 101 ). 
     
     
         6 . The sewage discharge device for a variable type water-saving flush toilet according to  claim 3 , wherein the odor prevention unit ( 600 ) comprises an odor prevention member ( 610 ) that is disposed at the inside of the sewage discharge tube ( 400 ), is formed in a hollow shape, and is made of vinyl or thin rubber having flexibility,
 wherein one end of the odor prevention member ( 610 ) is fixed to one end of an inner circumference of the sewage discharge tube ( 400 ), and   wherein the other end of the odor prevention member ( 610 ) is disposed to form a free end along the other end of the inner circumference of the sewage discharge tube ( 400 ),   whereby when sewage contained in the bowl ( 110 ) flows into the corrugated tube ( 200 ) through connection tube ( 120 ), it is introduced into a hollow space of the odor prevention member ( 610 ) to open the odor prevention member ( 610 ), and   whereby when the discharge of the sewage from the sewage discharge tube ( 400 ) is completed, the outward shape of the other end of the odor prevention member ( 610 ) disposed to form the free end is changed to be closely abutted against the sewage discharge tube ( 400 ).