Dual flush valve for water saving toilet

Abstract

The invention discloses a kind of double flush valve of water-saving toilet, including valve, water stop and operating lever.Valve includes valve body, piston and piston rod.Operating lever includes operating lever body;Main shaft is located in operating lever body, simultaneously through the two sides of operating lever body, its two ends have main shaft support part and rotary connecting rod, middle part has main shaft spring retainer, main shaft guide is located between valve body and operating lever body Main shaft guide guides main shaft and has guide protrusion at one end towards valve body;And rotary connecting rod, which is coupled at the other end of main shaft by rotary connecting rod fixed shaft.For small range operation, operating lever includes: small operating lever, which is coupled to small operating lever connecting part formed in operating lever body;Inclined protruding part is arranged on main shaft at a position corresponding to small operating lever connecting part;Sub-shaft located in operating lever body has sub-shaft support part formed at one end, and contacts inclined protruding part of main shaft at the other end.The height of rotary connecting rod at the other end of the main shaft is changed to adjust the water consumption.

Description

Technical Field

[0001] The present invention relates to a toilet flush valve, and more specifically, to a water-saving toilet dual-flush valve. By separately installing a toilet control lever and adjusting the amount of flushing water according to urination and defecation, the amount of water used during urination and defecation can be distinguished, thereby saving water consumption during large and small gear operations. Background Art

[0002] Typically, unlike home toilets, in public toilets, government offices, corporate offices, and the like, many people share a toilet equipped with a flush valve directly connected to a large diameter water pipe of about 1 inch, without a water tank.

[0003] Since a large amount of water is consumed every day in a toilet operated by a flush valve, in order to save this large amount of water, a toilet flush valve that can distinguish between urine and feces is used.

[0004] In a toilet flush valve that distinguishes between urine and feces, when urine and feces are discharged, the piston in the valve rises to discharge the flushing water, and after a certain time, the piston falls to block the flushing water.

[0005] In the Korean patent registration document No. 1196425 "Toilet Cleaning Valve", the operating mechanisms of the large gear and the small gear are installed separately, and the water use is divided into two stages with different piston rising heights.

[0006] In Korean Patent No. 0452052 "Toilet Flush Valve", the large-gear operation button and the small-gear operation button are placed in the same position, and the water consumption is divided into two stages by distinguishing the height of the piston rise during large-gear operation and small-gear operation.

[0007] This prior art does not propose a structure for adjusting water consumption according to the type of pottery or the plumbing environment in which the product is installed. In other words, since the appropriate amount of water for defecation and urination varies depending on the water pressure or the type of pottery, it is necessary to adjust the water consumption for each of them in order to optimally save water.

[0008] In the prior art, the appropriate amount of water for each gear operation cannot be controlled according to the water pressure or pottery, so there is a problem of poor water saving effect. Summary of the Invention

[0009] Purpose of the Invention

[0010] The present invention is designed to solve the above problems, and its purpose is to provide a water-saving toilet dual-flush valve, which can adjust the water consumption of large-speed and small-speed operations respectively to cope with changes in pipeline environment or pottery type.

[0011] Technical Solution

[0012] To solve the above problems, the water-saving toilet dual flush valve of the present application includes: a valve which selectively discharges flush water supplied from a stopper by operating a lever; the stopper which supplies flush water to the valve; and the lever which can adjust the amount of water while selecting whether to discharge flush water from the valve.

[0013] The valve includes: a valve body to which a cap is coupled to an upper portion, the stopper and the lever are coupled to each side portion of the valve body, and a water outlet portion is formed in a lower portion of the valve body; a piston which opens and closes a flush water discharge passage connected to the stopper when moving up and down by the operation of the lever, the piston is inserted into the valve body to form a pressure chamber between the cap of the upper portion and the piston, and a pressure chamber outlet is formed in the center of the piston; and a piston rod which is installed at the pressure chamber outlet of the piston.

[0014] For large gear operation, the lever includes: a lever body which is coupled to the valve body in a state where a main shaft guide is inserted in the direction of the valve body; a large lever which is coupled to the lever body in the opposite direction of the valve body; a main shaft which has a main shaft support portion at one end, a main shaft spring support at the middle portion, and a rotation link connected at the other end, located inside the lever body; a main shaft guide which guides the main shaft and has a guide protrusion at one end toward the valve body, located between the valve body and the lever body; and a rotation link which is coupled at the other end of the main shaft by a rotation link fixing shaft.

[0015] For small gear operation, the lever includes: a small lever which is coupled to a small lever connecting portion formed in the lever body; an inclined protrusion portion which is provided at a position corresponding to the small lever connecting portion on the main shaft; and a sub shaft which is located inside the lever body through the small lever connecting portion of the lever body, has a sub shaft support portion formed at one end, and is in contact with the inclined protrusion portion of the main shaft at the other end.

[0016] The water consumption can be adjusted by changing the height of the rotation link at the other end of the main shaft.

[0017] Preferably, the water-saving toilet dual flush valve further includes a large lever adjusting bolt between the large lever and the main shaft. The water consumption can be adjusted by changing the height of the rotation link at the other end of the main shaft by adjusting the length of the large lever adjusting bolt to push the main shaft support portion. Specifically, a fastening screw portion of the large lever adjusting bolt is coupled to a large lever fastening groove formed in the center of the large lever to adjust the length of the large lever adjusting bolt. When the large lever is operated, the water consumption is adjusted by adjusting the length of the head of the large lever adjusting bolt to push the main shaft support portion.

[0018] Preferably, the water-saving toilet dual flush valve further includes a small lever adjusting bolt between the small lever and the sub-shaft. The water consumption is adjusted by adjusting the length of the small lever adjusting bolt which pushes the length of the sub-shaft support portion, and the water consumption can be adjusted by changing the height of the rotation link at the other end of the main shaft. Specifically, a fastening screw portion of the small lever adjusting bolt is coupled to a small lever fastening groove formed in the center of the small lever to adjust the length of the small lever adjusting bolt. When the small lever is operated, the water consumption is adjusted by adjusting the length of the head of the small lever adjusting bolt which pushes the sub-shaft support portion.

[0019] Preferably, an inclined guide is formed on the rotation link. When the large lever or the small lever is operated, the inclined guide of the rotation link advances along the guide protrusion of the main shaft guide, and pushes the piston rod while lifting the rotation link upward.

[0020] Advantageous effects

[0021] According to the present application having the above-described structure, the appropriate water consumption during the large gear and small gear operations can be effectively controlled so as to flexibly adapt to the change of the type of pottery or the installation environment of the pottery. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

[0023] Figure 1 FIG. 1 is a perspective view showing a water-saving toilet dual flush valve according to an embodiment of the present application.

[0024] Figure 2 FIG. 2 is an exploded perspective view showing a water-saving toilet dual flush valve according to an embodiment of the present application.

[0025] Figure 3 FIG. 3 is a sectional view showing a water-saving toilet dual flush valve according to an embodiment of the present application.

[0026] Figures 4 to 7 FIG. 4 is a sectional view showing a large gear operation sequence according to an embodiment of the present application.

[0027] Figure 8 FIG. 5 is a sectional view showing adjustment of maximum water consumption during large gear operation according to an embodiment of the present application.

[0028] Figure 9 FIG. 6 is a sectional view showing adjustment of minimum water consumption during large gear operation according to an embodiment of the present application.

[0029] Figures 10 to 13is a sectional view showing a small-gear operation sequence according to an embodiment of the present application.

[0030] Figure 14 is a sectional view showing adjustment of maximum water consumption during small-gear operation according to an embodiment of the present application.

[0031] Figure 15 is a sectional view showing adjustment of minimum water consumption during small-gear operation according to an embodiment of the present application.

[0032] Figure 16 is a view showing variation of water consumption according to the height of the pressure chamber during large-gear operation and small-gear operation according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] Hereinafter, a dual flush valve for a water saving toilet according to a preferred embodiment of the present application will be described in detail with reference to the accompanying drawings.

[0034] Figure 1 is a perspective view showing a dual flush valve for a water saving toilet according to an embodiment of the present application. Figure 2 is an exploded perspective view showing a dual flush valve for a water saving toilet according to an embodiment of the present application. Figure 3 is a sectional view showing a dual flush valve for a water saving toilet according to an embodiment of the present application.

[0035] Referring to Figure 1 , the dual flush valve for a water saving toilet according to the present application includes a valve 100 for selectively discharging flush water supplied from a stopper 200 by operation of a lever 300, the stopper 200 capable of supplying flush water to the valve 100 and stopping the water as needed, and the lever 300 capable of adjusting water consumption for each size gear while selecting whether to discharge flush water from the valve 100.

[0036] Referring to Figure 2 and Figure 3 , the valve 100 includes a valve body 110 and a valve cap 120. The valve body 110 has a valve cap coupling portion 111 to which the valve cap 120 is coupled at an upper side, a stopper coupling portion 112 coupled to the stopper 200 in a side direction of the stopper, a lever coupling portion 113 coupled to the lever in a side direction of the lever, and a water outlet 114 at a lower portion. The valve cap 120 is coupled to the valve cap coupling portion 111 of the valve body 110 at the upper side with a valve gasket 121 interposed therebetween.

[0037] A piston 130 is inserted into the valve body 110 with a piston V-shaped gasket 131 interposed at a top portion and a piston gasket 132 interposed at a bottom portion. Accordingly, a pressure chamber 140 is formed between the valve cap 120 and the piston 130.

[0038] In a normal state, the flush water discharge passage 115 connected to the stopper connecting portion 112 on one side is closed by the piston 130.

[0039] The pressure chamber outlet 135 is formed through the top and bottom of the center of the piston 130, and the pressure chamber inlet 117 connecting the pressure chamber 140 and the flush water discharge passage 115 is formed at the side. The piston rod 150 is installed at the pressure chamber outlet 135, and in a normal state, the piston rod 150 closes the pressure chamber outlet 135 by the elastic force of the piston rod spring 153. Specifically, in the piston rod 150, the piston rod nut 152 is coupled to the piston rod bolt 151. On the piston rod nut 152, the piston rod fixing cap 155 is coupled to the piston 130, with the piston rod spring 153 interposed therebetween.

[0040] In the structure of the above-described valve 100, when the pressure chamber outlet 135 is opened by the inclination of the piston rod 150, the piston 130 rises to open the flush water discharge passage 115. Further, as the pressure in the pressure chamber 140 increases over time through the pressure chamber inlet 117, the piston 130 descends to block the flush water discharge passage 115.

[0041] One end of the stopper connecting pipe 160 is coupled to the stopper connecting portion 112 of the valve body 110. The other end of the stopper connecting pipe 160 is connected to the connector nut 163, which is coupled to the stopper body 210, with the connector clasp 161 interposed therebetween.

[0042] The stopper 200 includes a stopper body 210 and a stopper cap 220. The stopper body 210 has a stopper cap connecting portion 211 to which the stopper cap 220 is connected to the top, a valve body connecting portion 212 connected to the valve body 110 at the side through the connecting pipe nut 163, and a water supply pipe connecting portion 213 to which the water supply pipe 230 is connected to the lower portion. The stopper cap 220 is connected to the stopper cap connecting portion 211 of the stopper body 210. The stopper bolt 223 connected to the stopper disc 222 and the stopper gasket 221 is located at the stopper cap 220. By manipulating the stopper bolt 223 from the outside of the stopper 200, the stopper gasket 221 can close the water supplied through the water supply pipe 230.

[0043] The lever 300 includes a lever body 310 and a main shaft 320. The lever body 310 has a large lever connecting part 311 to which a large lever 340 is coupled in a direction opposite to the valve body 110, a small lever connecting part 312 to which a small lever 370 is coupled at the top, and a valve body connecting part 313 coupled to the lever connecting part 113 of the valve body 110 in a direction toward the valve body 110. Between the valve body connecting part 313 and the lever connecting part 113, a main shaft guide 390 and a lever body nut 314 are interposed. The main shaft 320 is located inside the lever body 310 and extends in a direction of the valve 100. The main shaft 320 has a main shaft support part 322 at one end, an inclined protrusion 321 and a main shaft spring holder 325 at the middle, and an extended rotation link 330 at the other end.

[0044] Between the valve body 110 and the lever body 310, a main shaft guide 390 is provided, which guides the main shaft and has a guide protrusion 391 in a direction toward the valve body.

[0045] The main shaft 320 includes a rotation link 330 rotatably coupled to a rotation link fixing shaft 331 at an end in a direction of the valve body 110. A rotation link spring 333 is spring-coupled to the rotation link fixing shaft 331.

[0046] In a direction of the valve body 110 of the main shaft 320, the large lever 340 is coupled to the large lever connecting part 311 through a large lever nut 341. A large lever adjusting bolt 350 is interposed between the large lever 340 and the main shaft 320.

[0047] In addition, the lever 300 has a sub shaft 360 passing through the small lever connecting part 312 of the lever body 310 located inside the lever body 310. A sub shaft support part 362 is formed at one end of the sub shaft 360, and the other end contacts the inclined protrusion 321 of the main shaft 320.

[0048] The sub shaft 360 and the small lever 370 are coupled to the small lever connecting part 312 of the lever body 310 through a small lever nut 371. A small lever adjusting bolt 380 is interposed between the small lever 370 and the sub shaft 360.

[0049] The spindle support portion 322 at the end of the spindle 320 faces the head 351 of the large lever adjusting bolt 350. When the large lever 340 is operated, the head 351 of the large lever adjusting bolt 350 pushes the spindle support portion 322 at one end of the spindle 320. In addition, the length of the large lever adjusting bolt 350 can be adjusted by coupling the fastening screw portion 352 of the large lever adjusting bolt 350 to the large lever fastening groove 342 formed in the inner center of the large lever 340. Accordingly, the amount of water used during large lever operation can be adjusted, which will be described later. Reference numeral "353" is a large lever disk that facilitates rotational control for length adjustment within the large lever fastening groove 342. Reference numeral 354 is an E-ring that connects the head 351 of the large lever adjusting bolt 350 to the large lever disk 353.

[0050] The spindle support portion 322 at the end of the spindle 320 faces the head 351 of the large lever adjusting bolt 350. When the large lever 340 is operated, the head 351 of the large lever adjusting bolt 350 pushes the spindle support portion 322 at one end of the spindle 320. In addition, the length of the large lever adjusting bolt 350 can be adjusted by coupling the fastening screw portion 352 of the large lever adjusting bolt 350 to the large lever fastening groove 342 formed in the inner center of the large lever 340. Accordingly, the amount of water used during large lever operation can be adjusted, which will be described later. Reference numeral "353" is a large lever disk that facilitates rotational control for length adjustment within the large lever fastening groove 342. Reference numeral 354 is an E-ring that connects the head 351 of the large lever adjusting bolt 350 to the large lever disk 353.

[0051] Invention Mode

[0052] Hereinafter, large lever operation according to an embodiment of the present application and a method for controlling the amount of water used during large lever operation will be described.

[0053] Figures 4 to 7 is a sectional view illustrating a sequence of large lever operation according to an embodiment of the present application.

[0054] Referring to Figure 4 ① The large lever 340 connected to the lever body 310 is operated.

[0055] ② The head 351 of the large lever adjusting bolt 350 connected to the large lever 340 pushes the spindle support portion 322 at one end of the spindle 320. Thereby, the spindle 320 advances toward the valve body 110 against the resistance of the spindle spring 327. Also, the rotary link 330 hinged to the other end of the spindle 320 advances along the guide protrusion 391 of the spindle guide 390.

[0056] ③ The rotating link 330 has an obliquely disposed inclined guide 335. When the inclined guide 335 of the rotating link 330 advances along the guide protrusion 391 of the main shaft guide 390, the piston rod 150 is pushed while the rotating link 330 is raised upward.

[0057] ④ The piston rod 150 is inclined by the pushing of the rotating link 330.

[0058] ⑤ When the piston rod 150 is inclined, the pressure chamber outlet 135 of the valve body 110 is opened, and the water filled in the pressure chamber 140 is discharged to the lower portion.

[0059] Referring to Figure 5 , ① As the pressure in the pressure chamber 140 is released, the piston 130 is raised upward from the valve body 110.

[0060] ② When the piston 130 is raised, a certain amount of flushing water is discharged to the water outlet 114 from the flushing water discharge passage 115 through the water stop 200.

[0061] ③ As the piston 130 is raised, when the end portion of the piston rod 150 rises above the end portion of the rotating link 330, the piston rod 150 is again erected due to the piston rod spring 153.

[0062] ④ When the piston rod 150 is erected, the pressure chamber outlet 135 is closed.

[0063] Referring to Figure 6 , ① The pressure chamber 140 is filled with flushing water by the flushing water introduced from the pressure chamber inlet 117, and the pressure of the pressure chamber 140 is raised.

[0064] ② As the pressure in the pressure chamber 140 increases, the piston 130 starts to descend. At the same time, the large operating lever 340 is returned to its original position by the main shaft spring 327.

[0065] Referring to Figure 7 , the piston 130 descends to seal the flushing water discharge passage 115.

[0066] Hereinafter, control of the amount of water used during large gear operation will be described.

[0067] Figure 8 is a sectional view illustrating adjustment of the maximum water consumption during large gear operation according to an embodiment of the present application. Figure 9 is a sectional view illustrating adjustment of the minimum water consumption during large gear operation according to an embodiment of the present application.

[0068] Referring to Figure 8which shows the maximum water usage for the large-gear operation. When the fastening screw portion 352 of the large-lever adjusting bolt 350 coupled with the large-lever fastening groove 342 of the large lever 340 is loosened, the head 351 of the large-lever adjusting bolt 350 extends toward the lever body 310.

[0069] In this state, when the large lever 340 is operated downward to perform the large-gear operation, the head 351 of the large-lever adjusting bolt 350 coupled with the large lever 340 rotates. The end of the extended head 351 pushes the spindle support portion 322.

[0070] As a result, the rotation link fixing shaft 331 of the spindle 320 is also pushed, and the rotation link 330 pushes the piston rod 150 so that the piston rod 150 is inclined and the pressure chamber outlet 135 of the pressure chamber 140 is opened. As the pressure in the pressure chamber 140 decreases, the piston 130 rises.

[0071] When the piston 130 rises and the end of the piston rod 150 rises above the end of the rotation link 330, the piston rod 150 is erected by the piston rod spring 153. The piston 130 rises to the maximum height in the pressure chamber 140, and the height of the pressure chamber 140 becomes "hi" by the rise of the piston 130.

[0072] The flush water introduced through the pressure chamber inlet 117 increases the pressure of the pressure chamber 140. When the height of the pressure chamber is "hi", the time required for the piston 130 to close the flush water discharge passage 115 by the pressure of the pressure chamber 140 is maximized. That is, in this state, the flush water discharged to the flush water discharge passage 115 is the maximum during the large-gear operation.

[0073] Reference Figure 9 which shows the minimum water usage for the large-gear operation. When the fastening screw portion 352 of the large-lever adjusting bolt 350 coupled with the large-lever fastening groove 342 of the large lever 340 is locked, the head 351 of the large-lever adjusting bolt 350 is shortened toward the large lever 340.

[0074] In this state, when the large lever 340 is operated downward to perform the large-gear operation, the head 351 of the large-lever adjusting bolt 350 coupled with the large lever 340 is rotated. The end of the shortened head 351 pushes the spindle support portion 322.

[0075] As a result, when the rotation link fixing shaft 331 of the spindle 320 is also pushed, the rotation link 330 pushes the piston rod 150 so that the piston rod 150 is inclined to open the pressure chamber 140. As the pressure in the pressure chamber 140 decreases, the piston 130 rises.

[0076] When the piston 130 rises and the end of the piston rod 150 rises above the end of the rotary link 330, the piston rod 150 is erected by the piston rod spring 153. The piston 130 rises to the minimum height during the large gear operation in the pressure chamber 140, and the height of the pressure chamber 140 becomes "h2" by the rising of the piston 130.

[0077] The flushing water introduced through the pressure chamber inlet 117 increases the pressure of the pressure chamber 140. When the height of the pressure chamber is "h2", the time required for the piston 130 to close the flushing water discharge passage 115 by the pressure of the pressure chamber 140 is minimized. That is, in this state, the flushing water discharged to the flushing water discharge passage 115 is minimized during the large gear operation.

[0078] Thus, by loosening and locking the large lever adjusting bolt 350 coupled to the large lever 340, the height of the pressure chamber 140 can be adjusted between "h1" and "h2", so that the amount of water used during the large gear operation can be adjusted.

[0079] Hereinafter, the small gear operation according to an embodiment of the present application and a method for controlling the amount of water consumed during the small gear operation will be described.

[0080] Figures 10 to 13 is a sectional view showing a sequence of the small gear operation according to an embodiment of the present application.

[0081] Referring to Figure 10 ① the small lever 370 connected to the lever body 310 is operated.

[0082] ② the small lever adjusting bolt head 381 connected to the small lever 370 pushes the shaft support portion 362 of one end of the shaft 360. Accordingly, the other end of the shaft 360 descends along the inclined protrusion 321 of the main shaft.

[0083] ③ when the other end of the shaft 360 descends along the inclined protrusion 321 of the main shaft 320, the main shaft 320 moves forward in the direction of the valve body 110. The rotary link 330 hinged to the other end of the main shaft 320 advances along the guide protrusion 391 of the main shaft guide 390.

[0084] ④ the rotary link 330 has an inclined inclined guide 335. When the inclined guide 335 of the rotary link 330 advances along the guide protrusion 391 of the main shaft guide 390, the piston rod 150 is pushed while the rotary link 330 rises upward.

[0085] ⑤ the piston rod 150 is inclined by the pushing of the rotary link 330.

[0086] ⑥ When the piston rod 150 is tilted, the pressure chamber outlet 135 of the valve body 110 is opened, and the water filled in the pressure chamber 140 is discharged downward.

[0087] Referring to Figure 11 , ① As the pressure in the pressure chamber 140 is released, the piston 130 is raised upward from the valve body 110.

[0088] ② When the piston 130 is raised, a certain amount of flushing water is discharged to the water outlet 114 from the flushing water discharge passage 115 through the water stop 200.

[0089] ③ As the piston 130 is raised, when the end of the piston rod 150 is higher than the end of the rotating link 330, the piston rod 150 is again erected due to the piston rod spring 153.

[0090] ④ When the piston rod 150 is erected, the pressure chamber outlet 135 is closed.

[0091] Referring to Figure 12 , ① The pressure chamber 140 is filled with flushing water by the flushing water introduced from the pressure chamber inlet 117, and the pressure of the pressure chamber 140 is raised.

[0092] ② As the pressure in the pressure chamber 140 increases, the piston 130 begins to descend. At the same time, the small operating lever 370 is returned to its original position by the sub-shaft spring 367.

[0093] Referring to Figure 13 , the piston 130 descends to seal the flushing water discharge passage 115.

[0094] Hereinafter, control of the amount of water used during small-gear operation will be described.

[0095] Figure 14 is a sectional view illustrating adjustment of the maximum water consumption during small-gear operation according to an embodiment of the present application. Figure 15 is a sectional view illustrating adjustment of the minimum water consumption during small-gear operation according to an embodiment of the present application.

[0096] Referring to Figure 14 , which illustrates the maximum water consumption in small-gear operation. When the small operating lever adjustment bolt 380, which is coupled with the small operating lever fastening groove 372 of the small operating lever 370, is loosened, the head 381 of the small operating lever adjustment bolt 380 extends toward the operating lever body 310.

[0097] In this state, when the small operating lever 370 is operated downward to perform small-gear operation, the head 381 of the small operating lever adjustment bolt 380, which is fastened with the small operating lever 370, is rotated. The end of the extended head 381 pushes the sub-shaft support portion 362.

[0098] As a result, while pushing the sub shaft 360, the other end of the sub shaft 360 descends along the inclined protrusion 321 of the main shaft 320. Accordingly, the main shaft 320 is pushed toward the valve body 110. Due to the pushing of the main shaft 320, the rotary link fixing shaft 331 is also pushed, and the rotary link 330 pushes the piston rod 150 so that the piston rod 150 is inclined to open the pressure chamber outlet 135. The piston 130 rises, and the pressure in the pressure chamber 140 decreases.

[0099] When the piston 130 rises and the end of the piston rod 150 rises above the end of the rotary link 330, the piston rod 150 is erected by the piston rod spring 153. The piston 130 rises to the minimum height for the small gear operation in the pressure chamber 140, and the height of the pressure chamber 140 becomes "h3" by the rise of the piston 130.

[0100] The flush water introduced through the pressure chamber inlet 117 increases the pressure of the pressure chamber 140. When the height of the pressure chamber is "h3", the time required for the piston 130 to close the flush water discharge passage 115 by the pressure of the pressure chamber 140 is maximized during the small gear operation. That is, in this state, the flush water discharged to the flush water discharge passage 115 is the largest during the small gear operation.

[0101] Referring to Figure 15 which shows the minimum water usage amount for the small gear operation. When the small lever tightening screw part 382 of the small lever adjusting bolt 380 coupled with the small lever tightening groove 372 of the small lever 370 is locked, the head 381 of the small lever adjusting bolt 380 is shortened toward the small lever 370.

[0102] In this state, when the small lever 370 is operated downward to perform the small gear operation, the head 381 of the small lever adjusting bolt 380 fastened with the small lever 370 is rotated. The end of the extended head 381 pushes the sub shaft support part 362.

[0103] As a result, while pushing the sub shaft 360, the other end of the sub shaft 360 descends along the inclined protrusion 321 of the main shaft 320, and the main shaft 320 moves toward the valve body 110. Due to the pushing of the main shaft 320, the rotary link fixing shaft 331 is also pushed, and the rotary link 330 pushes the piston rod 150 so that the piston rod 150 is inclined to open the pressure chamber outlet 135. The piston 130 rises as the pressure in the pressure chamber 140 decreases.

[0104] When the piston 130 rises and the end of the piston rod 150 rises above the end of the rotary link 330, the piston rod 150 is erected by the piston rod spring 153. The piston 130 rises to the minimum height for the small gear operation in the pressure chamber 140, and the height of the pressure chamber 140 becomes "h4" by the rise of the piston 130.

[0105] The flush water introduced through the pressure chamber inlet 117 increases the pressure of the pressure chamber 140. When the height of the pressure chamber is "h4", the time required for the piston 130 to seal the flush water discharge passage 115 by the pressure of the pressure chamber 140 is minimized during the small gear operation. That is, in this state, the flush water discharged to the flush water discharge passage 115 is minimized during the small gear operation.

[0106] Thus, by loosening and locking the small lever adjusting bolt 380 coupled to the small lever 370, the height of the pressure chamber 140 can be adjusted between "h3" and "h4", so that the amount of water used during the small gear operation can be adjusted.

[0107] Figure 16 is a view showing the change in the amount of water used according to the height of the pressure chamber during the large gear operation and the small gear operation according to an embodiment of the present application.

[0108] Referring to Figure 16 By adjusting the large and small levers 340 and 370 and the large and small adjusting bolts 350 and 380, the height of the rotating link 330 is changed by Δh. Due to the change Δh in the height of the rotating link 330, the height of the pressure chamber 140 is changed from h1 to h4.

[0109] The flush valve has a characteristic in which the amount of water used is determined by the volume of the pressure chamber 140 according to the change in the rising height of the piston 130.

[0110] According to the present application, the appropriate amount of water used during the large gear and small gear operations can be effectively controlled so as to flexibly adapt to changes in the type of crockery or the crockery installation environment.

[0111] Table 1 below is an example.

[0112] [Table 1]

[0113] Chamber height h1 h2 h3 h4 Water quantity 8L 5L 5L 3L

[0114] The present application described above is not limited to the described drawings and detailed description, but encompasses the idea and scope of the present application described above, and various modifications and changes can be made by those skilled in the art as necessary, and are of course included in the scope of the present application.

[0115] Industrial applicability

[0116] According to the present application, the appropriate amount of water used during the large gear and small gear operations can be effectively controlled so as to flexibly adapt to changes in the type of crockery or the crockery installation environment.

Claims

1. A water-saving toilet dual-flush valve, comprising: A valve that selectively discharges flushing water supplied from a water stop by operating a lever, a water stop that supplies flushing water to the valve, and a control lever for controlling the amount of water used while selecting whether to discharge the flushing water from the valve; -in, The valve includes a valve body, a valve bonnet coupled to an upper portion of the valve body, the water stopper and the operating lever coupled to respective side portions of the valve body, and a water outlet portion formed at a lower portion of the valve body; a piston that opens and closes a flushing water discharge passage connected to the water stop when moved up and down by operation of the operating lever, the piston being inserted into the valve body to form a pressure chamber between an upper valve cap and the piston, a pressure chamber outlet being formed at a center of the piston; as well as A piston rod, which is mounted at the outlet of the pressure chamber of the piston, - Among them, the control lever for large gear operation includes a control lever body coupled to the valve body in a state where a main shaft guide is inserted in a direction toward the valve body; a large operating lever coupled to the operating lever body in a direction opposite to the valve body; A main shaft located in the control lever body has a main shaft support portion at one end, a main shaft spring support member in the middle, and a rotating connecting rod connected at the other end; a main shaft guide located between the valve body and the operating rod body, guiding the main shaft and having a guide protrusion at one end thereof facing the valve body; and A rotating connecting rod, which is connected to the other end of the main shaft by a rotating connecting rod fixed shaft, - Among them, the control lever for small gear operation includes a small joystick coupled to a small joystick connecting portion formed in the joystick body; an inclined protrusion provided on the main shaft at a position corresponding to the connecting portion of the small joystick; and A secondary shaft, which passes through the small joystick connecting portion of the joystick body and is located in the joystick body, the secondary shaft having a secondary shaft support portion formed at one end thereof, and the secondary shaft contacts the inclined protrusion of the main shaft at the other end, - wherein the rotating link is formed with an inclined guide, When the large operating lever or the small operating lever is operated, the inclined guide of the rotating link advances along the guide protrusion of the main shaft guide and pushes the piston rod while lifting the rotating link upward.

2. The water-saving toilet dual-flush valve according to claim 1, wherein: It also includes a large control rod adjusting bolt located between the large control rod and the main shaft, By adjusting the length of the large operating lever adjusting bolt to push the main shaft support portion, the water consumption can be adjusted by changing the height of the rotating connecting rod at the other end of the main shaft.

3. The water-saving toilet dual-flush valve according to claim 1, wherein: It also includes a small control rod adjusting bolt located between the small control rod and the secondary shaft, The length of the auxiliary shaft support portion can be adjusted by adjusting the length of the small operating lever adjusting bolt, and the water consumption can be adjusted by changing the height of the rotating connecting rod at the other end of the main shaft.

4. The water-saving toilet dual-flush valve according to claim 2, wherein: The fastening screw portion of the large joystick adjusting bolt is connected to the large joystick fastening groove formed in the center of the large joystick to adjust the length of the large joystick adjusting bolt. When the large operating lever is operated, the water consumption is adjusted by adjusting the length of the main shaft supporting portion pushed by the head of the large operating lever adjusting bolt.

5. The water-saving toilet dual-flush valve according to claim 3, wherein: The fastening screw portion of the small joystick adjusting bolt is coupled to a small joystick fastening slot formed in the center of the small joystick to adjust the length of the small joystick adjusting bolt. When the small operating lever is operated, the water consumption is adjusted by adjusting the length of the auxiliary shaft support portion pushed by the head of the small operating lever adjusting bolt.

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