JP2881380B2 - Flash valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush valve used for washing a basin or a toilet.

[0002]

2. Description of the Related Art Conventionally, for example, a flush valve for washing a basin has a structure as shown in a sectional view in FIG. 4, and a flush valve 1 is fastened with a packing 3 to a counter 2 of the basin. A tubular main body 5 fixed via a nut 4 is provided with a water supply pipe 7 via a connection fitting 6 on a side surface thereof.
The lower surface is connected to a discharge pipe 9 via a cap nut 8. The tip of the discharge pipe 9 is connected to a rim of a basin (not shown). 5, a piston 10 is slidably disposed, and a pressure chamber S is provided above the piston 10.
The starting valve cover 50 is fixed above the pressure chamber S.

The components mounted on the start valve cover 50 are shown in exploded perspective views in FIGS. 5 and 6, and the start valve cover 50 has a vertically extending insertion hole 51 formed therein. A spring 52 can be inserted into 51, and a starting valve 53 can be inserted therein.
The starting valve 53 has a spindle hole 54 formed therein in the longitudinal direction, and an O-ring groove 55 in which an O-ring (may be a packing) may be formed at the outer periphery of the lower end. A female screw portion 57 having a female screw formed therein and a female screw portion 58 formed further above the female screw portion 57.
An adjusting spindle 60 is screwed into the upper part 7 from above, and a slot 61 is formed on the upper surface of the adjusting spindle 60 so as to be adjustable by a driver. Further, a fitting recess 63 is formed in the push button 62 connected above the activation valve 53, and a set screw 64 can be inserted into the fitting recess 63. It can be screwed into the screw portion 58. Further, a display plate 65 is provided on the upper surface of the push button 62 so as to be fitted therein.
6 is fitted into the fitting recess 63 so that the display plate 65 can be integrated with the push button 62.

In such a structure, as shown in FIG. 4, when the push button 62 is pressed downward, the starting valve 53 is moved downward, whereby the water in the pressure chamber S is drained by the horizontal drain hole 67. Through the drain hole 12 to the discharge pipe 9 side, whereby the piston 10 instantaneously moves upward by the water pressure supplied from the water supply pipe 7 side, collides its upper surface with the lower end of the adjustment spindle 60, and stops. At this time, since the piston 10 is separated from the seat 11 on the main body 5 side, the water from the water supply pipe 7 is flushed to the discharge pipe 9 side to wash the bowl portion of the wash basin. Water gradually flows into the pressure chamber S from a small hole (not shown) formed therein, whereby the piston 10 gradually moves downward. Close the basin Water discharge to is intended to be stopped.

In such a conventional structure, the piston 1
The lift amount of the piston 10 is adjusted by adjusting the adjustment spindle 60 with a screwdriver or the like and lowering the lower end of the adjustment spindle 60 in order to adjust the lift amount of zero and the amount of water discharged to the basin side. Is reduced, and the amount of water discharge is reduced. Conversely, when the adjustment spindle 60 is moved upward, the lift amount of the piston 10 becomes large, and the amount of water discharge is adjusted to be large. However, since there is no standard for the adjustment amount of the adjustment spindle 60, there is a possibility that the adjustment spindle 60 is turned excessively and comes out. When the adjustment spindle 60 comes off at the time of adjustment, there is high water pressure water supply from the water supply pipe 7 side. Has a problem that a dangerous situation may occur. Further, in the conventional structure, when the piston 10 moves upward, the upper surface of the piston 10 collides with the lower end of the adjustment spindle 60 to give an impact,
There is a problem that the adjusting spindle 60 and the starting valve 53 are damaged. Further, when the push button 62 is pressed with a full stroke, the starting valve 53 closes the horizontal drain hole 67, so that the water in the pressure chamber S cannot be satisfactorily drained, and a sufficient water discharge amount may not be obtained. There was a problem. Further, when the push button 62 is pressed downward, the pressure chamber S
Since the pressure receiving area of the lower surface of the start valve 53 for the water inside is large, the operation force for pressing the push button 62 downward is extremely heavy, and there is a problem that the operation is difficult.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a flash valve which can operate a push button lightly and can easily adjust each part. The first gist is that a pressure chamber is formed above a piston slidably disposed in the main body, and an activation valve cover having a drain hole is disposed above the pressure chamber, A start valve which is moved downward by a push button is provided in the start valve cover, and when the start valve is moved downward, water in the pressure chamber is drawn through the drain hole, and the piston moves upward to discharge water. In the flash valve configured as described above, the starting valve cover is provided so as to be vertically adjustable with respect to the main body, and a drooping projection is provided on a lower surface of the starting valve cover so that the piston comes into contact when the piston moves upward. A second gist is that the starting valve is provided with an adjusting screw for adjusting the vertical position of the push button. Further, a third gist is that a step portion is formed in a lower portion of the start valve so as to abut against a bottom portion of the start valve cover when the start valve moves down and regulate a downward movement amount, and a lower surface of the step portion is formed. That is, a groove communicating with the drain hole is formed.

[0007]

In the first aspect, since the starting valve cover can be adjusted up and down, the starting valve cover can serve as a conventional adjusting spindle, and the starting valve cover can be adjusted up and down to adjust the piston. By adjusting the lift amount, it is possible to easily adjust the water discharge amount. In addition, since a downwardly protruding projection is formed on the lower surface of the start valve cover, the piston collides with the downwardly protruding projection when the piston moves upward. And the starting valve is not damaged. Further, in the second aspect, since the vertical position of the push button can be easily adjusted via the adjusting screw, even when the start valve cover is lowered, the push button is adjusted upward via the adjusting screw, The position of the push button with respect to the main body can be adjusted well. Further, in the third aspect, even when the start valve cover is lowered, the push button is not pushed too far downward, so that the stepped portion of the start valve abuts the bottom of the start valve cover and the push button is pressed. The pushing amount can be stopped at a certain position. Also, the drain valve is not prevented by the downward movement of the start valve,
The water in the pressure chamber can be satisfactorily drained through the drain hole through the groove formed in the starting valve, and a stable water discharge amount can be secured.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional configuration diagram of the assembled state of the flash valve of the present embodiment, and FIGS. 2 and 3 are exploded perspective views of components around a start valve cover. In the figure, the main body 5
The main body 5 is fixed to the counter 2 with a fastening nut 4 via a packing 3, a water supply pipe 7 is connected to a side surface of the main body 5 via a connection fitting 6, and a cap nut 8 is provided on a lower surface of the main body 5.
The discharge pipe 9 is connected via the. Further, a piston 10 is slidably disposed in the main body 5, and normally, the piston 10 comes in contact with a valve seat 11 formed on the main body 5 with a valve 10 a at a lower end thereof, and a water discharge pipe is provided. The water channel to the 9th side is closed. A drain hole 12 is formed in the main body 5 on the side of the piston 10 in a vertical direction, and the drain hole 12 communicates with the discharge pipe 9 side.

A pressure chamber S is formed in the main body 5 above the piston 10, and a starting valve cover 15 is disposed above the pressure chamber S.
As shown in FIG. 1, a male screw 16 is formed on the outer periphery of the male screw 16 and screwed into a female screw 13 formed on the inner peripheral surface of the main body 5.
The start valve cover 15 can be adjusted up and down with respect to the main body 5 by retreating the screw 6.

As shown in FIG. 3, the starting valve cover 15 is formed with a mounting hole 18 whose upper surface is opened in the vertical direction, and a small diameter through the bottom 19 of the mounting hole 18 penetrates downward. Spindle hole 24 is formed. In addition, a plurality of drainage lateral holes 20 are formed penetrating from the bottom portion 19 to the side surface. An O-ring (may be a U-packing) 22 is fitted on the outer periphery of the lower portion of the bottom portion 19, and furthermore, a hanging projection 23 is formed so as to protrude downward and integrally with the mounting hole 18. An O-ring (may be a Y-packing) 21 is fitted into the inner periphery of the nut, and the outer periphery of the upper end of the mounting hole 18 is a hexagonal nut portion 1.
7 are formed. Therefore, it is possible to adjust the starting valve cover 15 up and down by turning the nut portion 17 with a tool.

A spring 25 can be mounted in the mounting hole 18 of the starting valve cover 15, and a starting valve 26 can be mounted in the mounting hole 18.
Reference numeral 6 denotes an insertion hole 35 having an open upper surface formed in a vertical direction, a female screw portion 34 formed on the lower inner periphery of the insertion hole 35, and further below the cylinder forming the insertion hole 35. A step portion 28 having a smaller diameter than the portion 27 is formed integrally, and a spindle portion 29 having a small diameter is formed integrally below the step portion 28 in a hanging manner. An O-ring groove 30 into which a ring (may be a packing) 31 is fitted is formed. A horizontal groove 33 and a vertical groove 32 are formed in a groove shape along the lower surface of the step portion 28 and the side surface of the spindle portion 29.

The spindle portion 29 is inserted into the spindle hole 24 of the starting valve cover 15, and the horizontal groove 33 is aligned with the drain horizontal hole 20 when inserted. The outer periphery of the cylindrical portion 27 of the starting valve 26 is provided with an attachment hole 18 through an O-ring (you
It is slidably mounted inside in a watertight manner. Further, an adjusting screw 36 having a slot 37 formed on the upper surface is inserted into the insertion hole 35 of the starting valve 26 from above, and the adjusting screw 36 can be screwed into the female screw portion 34. Further, a hanging shaft 39 formed in a hanging shape on the push button 38 can be inserted into the insertion hole 35 from above, and an O-ring (may be a packing) may be fitted on the outer periphery of the hanging shaft 39. The O-ring 40 comes into sliding contact with the inner peripheral surface of the insertion hole 35. A concave portion 38a is formed in a concave shape on the upper surface of the push button 38, and the display plate 42 can be fitted into the concave portion 38a from above.
Has a fitting projection 43 which is inserted into a fitting recess 41 of the push button 38 and has an O-ring (may be a packing) fitted around the outer periphery thereof.

In such a configuration, when the push button 38 is pressed down with a finger or the like, the start valve 26 moves down in the start valve cover 15 and the lower end of the spindle portion 29 of the start valve 26 is moved to the pressure chamber S. Into the spindle hole 2
4 is opened, and water in the pressure chamber S is filled with the vertical groove 32 and the horizontal groove 3.
The water flows out through the drain hole 20 through the drain hole 3, and is discharged through the drain hole 12 into the discharge pipe 9. When the water in the pressure chamber S escapes in this manner, the piston 10 instantaneously moves upward due to the water pressure from the water supply pipe 7, comes into contact with the lower surface of the hanging projection 23 of the activation valve 15, and stops the upward movement of the piston 10. At this time, since the valve 10a is separated from the valve seat portion 11, the water from the water supply pipe 7 is discharged at a stroke to the discharge pipe 9 side. The bowl is to be cleaned. When the flush valve 1 is attached to the toilet, the inside of the toilet is cleaned. After a certain time, water gradually flows into the pressure chamber S from a small hole (not shown) formed in the piston 10, and the water is gradually flown into the piston 1 by the water flowing into the pressure chamber S.
0 is moved down, and eventually the valve 10a of the piston 10 comes into contact with the valve seat portion 11 to stop the water discharge.

In this embodiment, the hanging projection 2 is attached to the starting valve cover 15.
3, the piston 10 collides with the hanging projection 23 when the piston 10 moves upward vigorously, so that the piston 10 does not collide with the spindle portion 29 as in the prior art, and the starting valve including the spindle portion 29 is provided. There is no impact on the side 26 and the starting valve 26 is not damaged. Further, when adjusting the discharge amount of the flash valve 1, as described above, it is possible to adjust the sliding of the starting valve cover 15 by applying a tool to the nut portion 17 and move the starting valve cover 15 downward. When this is done, the lower end position of the hanging projection 23 moves downward, so that the rising distance of the piston 10 becomes shorter,
Accordingly, the water discharge amount of the flash valve 1 can be adjusted to a small value. Conversely, if the starting valve cover 15 is moved upward, the amount of lift (lift amount) of the piston 10 increases, and the water discharge amount increases. Is greatly adjusted.

As described above, in the prior art, the amount of water discharge was adjusted by adjusting the adjustment spindle 60. However, in this embodiment, there is no need to provide an adjustment spindle, and the start valve cover 15 itself is slid to reduce the amount of water discharge. When the actuation valve cover 15 is screwed to the lowermost position, it comes into contact with the step portion 14 in the main body 5, so that it does not slide any more. Starting valve cover 1 through drain hole 45 formed in hole 5
5 can be confirmed, and the starting valve cover 15 can be checked.
There is a guide when the body moves downward and also when the body moves upward, so that the adjustment is easy without turning too much.

When the starting valve cover 15 is lowered downward until it is substantially in contact with the step portion 14 of the main body 5, the position of the push button 38 also moves downward, and the position of the push button 38 moves downward with respect to the upper end of the main body 5. Since the push button 38 is in a lowered state, the height of the push button 38 can be easily adjusted to be substantially flush with the main body 5 by adjusting the adjusting screw 36 at this time. Further, when the adjusting screw 36 is adjusted, the starting valve 26 does not rotate. Also, when the push button 38 is pressed strongly downward, the step 28 of the activation valve 26 comes into contact with the bottom 19 of the activation valve cover 15 and the activation valve 26 does not move downward any more. , Push button 38
Is prevented from being pushed too far down. Further, at this time, the horizontal groove 33 and the vertical groove 32
Therefore, water in the pressure chamber S can be satisfactorily drained through the horizontal groove 33 and the vertical groove 32, and a stable water discharge amount can be secured.

Further, in this embodiment, since the spindle portion 29 of the starting valve 26 can be formed to have an extremely small diameter, the pressure receiving area of the lower end of the spindle portion 29 against water sealed in the pressure chamber S is extremely small. Therefore, the resistance when the push button 38 is pressed downward is small, and the operating force of the push button 38 is reduced as compared with the related art, so that the operation is easy.

The starting valve cover 15 and the starting valve 2 of this embodiment
6, the pushbutton 38 and other components shown in FIGS. 2 and 3 can be easily assembled into the conventional flash valve body 5 by replacing the conventional start valve cover 50, start valve 53, and the like. The conventional flash valve main body 5, piston 10 and the like can be easily rearranged using the same.

[0019]

According to the present invention, a pressure chamber is formed above a piston slidably disposed in a main body, and a starting valve cover having a drain hole is disposed above the pressure chamber. A start valve which is moved downward by a push button is provided in the start valve cover, and when the start valve is moved downward, water in the pressure chamber is drawn through the drain hole, and the piston moves upward to discharge water. In the flash valve configured as described above, the starting valve cover is provided so as to be vertically adjustable with respect to the main body, and the lower surface of the starting valve cover is provided with a hanging projection on which the piston comes into contact when the piston moves upward. The discharge amount of the flash valve can be easily adjusted by sliding the valve cover, the need for a conventional adjustment spindle is eliminated, the components can be simplified, and the piston is drooped by the starting valve. Sudden For striking the impact force of the piston is not directly transmitted to the starting valve, etc., it can be satisfactorily prevented damage of such starting valve. Also, by providing an adjusting screw for adjusting the vertical position of the push button, the starting valve,
By adjusting the adjusting screw, the push button can be easily adjusted so as to be flush with the main body. Further, in the lower portion of the start valve, a step portion that contacts the bottom of the start valve cover when the start valve moves down and regulates a downward movement amount is formed,
By forming a groove communicating with the drain hole on the lower surface of the step portion, the step portion of the start valve comes into contact with the bottom of the start valve cover, and the downward movement of the push button can be stopped. Pushing downward is well prevented. Also,
The drain hole is not closed as in the past, and when the push button is operated, the water in the pressure chamber can be reliably drained,
This has the effect that a stable water discharge amount can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional configuration diagram of an assembled state of a flash valve according to the present embodiment.

FIG. 2 is an exploded perspective view of a push button and an activation valve.

FIG. 3 is an exploded perspective view of a starting valve cover and a spring.

FIG. 4 is a sectional configuration diagram of a conventional flash valve.

FIG. 5 is an exploded perspective view of a conventional adjustment spindle and a push button.

FIG. 6 is an exploded perspective view of a conventional starting valve cover and a starting valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flush valve 5 Main body 7 Water supply pipe 9 Discharge pipe 10 Piston 15 Starting valve cover 16 Male screw 17 Nut part 19 Bottom part 20 Water draining horizontal hole 23 Hanging projection 24 Spindle hole 25 Spring 26 Starting valve 28 Step part 29 Spindle part 32 Vertical groove 33 Lateral groove 34 Female thread part 36 Adjusting screw 37 Slotting 38 Push button 39 Hanging shaft 41 Fitting concave part 42 Display plate 43 Fitting protrusion 44 O-ring S Pressure chamber

Continuation of the front page (56) References JP-A-4-68132 (JP, A) JP-A-58-167375 (JP, U) JP-A-60-112765 (JP, U) JP-B 5-46415 (JP) , B2) Jiko 50-50955 (JP, Y2) Jiko 28-9775 (JP, Y1) Joko 28-10779 (JP, Y1) (58) Fields surveyed (Int. Cl. ⁶ , DB Name) E03D 3/04 F16K 21/12

Claims (3)

(57) [Claims] A pressure chamber (S) is formed above a piston (10) slidably disposed in a main body (5), and a starting valve cover (15) having a drain hole (20) is provided above the pressure chamber (S). ,
A start valve 26 which is moved down by a push button 38 is provided in the start valve cover 15, and when the start valve 26 is moved down, water in the pressure chamber S is drawn through the drain hole 20 and In the flush valve configured so that the piston 10 moves upward to discharge water, the starting valve cover 15 is provided so as to be vertically adjustable with respect to the main body 5, and the piston 10 is mounted on the lower surface of the starting valve cover 15. A flash valve, comprising a hanging projection 23 which comes into contact when moving. 2. The flash valve according to claim 1, wherein an adjustment screw for adjusting a vertical position of the push button is provided on the activation valve. 3. A step portion 28 is formed at a lower portion of the start valve 26 to abut on a bottom portion 19 of the start valve cover 15 to regulate a downward movement amount when the start valve 26 moves downward.
3. The flash valve according to claim 1, wherein grooves 32 and 33 communicating with the drain holes 20 are formed on a lower surface of the flash valve.