JP2009185554A - Water-saving block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-saving flush valve which is used in a water supply faucet and a flowing water path of a flush toilet to surely have a water-saving effect over a certain level by a simple construction. <P>SOLUTION: This water-saving block 11 has: a block body 12 fitted into a discharge tube 5; and an outer collar section 13 projecting from the circumference of the discharge tube end of the block body 12. A linear orifice 14 vertically extends through the center of the block body 12. The orifice 14 allows a valve case 1 to communicate with the discharge tube 5. The outer periphery of the outer collar section 13 has the same diameter as the outer periphery of the discharge tube 5. Since the inner peripheral surface of the discharge tube 5 is closely fitted onto the outer peripheral surface of the block body 12, the water-saving block 11 is fixed to the discharge tube 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a water-saving coma used in a water flow path such as a water tap or a flush toilet.

Conventionally, there has been a water-saving flush valve that ensures a certain level of water-saving effect by simple construction in the water-flow path of faucet equipment and water discharge equipment and the water-flow path of equipment equipped with industrial fluid equipment. It is known (see Patent Document 1).
In this prior art, as shown in FIG. 8, the water-saving piece (12) includes a nut-side pipe body (25) comprising an end portion of a water discharge pipe in which a union collar (24) of a water discharge side union joint (23) is formed. A main body (15) fitted into the main body (15) and an outer collar portion (16) projecting from the end on the water supply side of the main body (15) over the entire circumference. Two linear orifices (17) having a uniform cross-sectional area are formed, and the water supply side and the water discharge side are communicated with each other by the orifice (17). The outer collar portion (16) A union nut that is sandwiched between a nut-side tube body (25) on the water discharge tube side and a screw-side tube body (25) on the valve case (2) side and is rotatably fitted on the nut-side tube body (25). (26) is screwed onto a union screw formed on the screw side tube (25) to union joint 23) is intended to be secured within.
The conventional product attached to the cap nut of the water discharge pipe (cleaning pipe) has a water discharge pipe (cleaning pipe) larger than the thickness of the packing for preventing water leakage when the water discharge pipe (cleaning pipe) hits the collar of the water-saving top when assembled. ) Cannot be inserted, and if the water discharge pipe (cleaning pipe) is inserted slightly off the vertical, there is a high risk of water leakage because the packing is not properly attached.

In addition, with the conventional product attached to the cap nut of the water discharge pipe (cleaning pipe), the water discharge pipe (cleaning pipe) hits the collar of the water-saving top. When it is inserted deeply, it is necessary to cut the water discharge pipe (cleaning pipe) shortly so that it does not hit the brim of the water-saving piece at the time of installation.
In addition, when the owner asks for recovery of the current situation, such as removing water-saving tops at a later date, the water discharge pipe (cleaning pipe) has been cut, so it is necessary to purchase and replace the water discharge pipe (cleaning pipe). As a result, useless expenses are also incurred.
In water faucet devices and water discharge devices, there is known a flow rate control piece that maintains the effect of flow rate control without being affected by fluid discharge even if a predetermined amount of foreign matter is mixed in the fluid (see Patent Document 2). ).
In this known technique, as shown in FIG. 9, a flange (13) as a shielding portion is integrally formed on the upper periphery of a predetermined position of a cylindrical body (12), and the flange ( 13) is divided into an inflow side (12A) and a downstream side as an outflow side (12B). On the inflow side (12A), an inflow port (14) is formed at a central portion on a plane. 14) and the inflow groove (15) is formed in a cross shape.
The purpose was to improve the following problems in conventional water-saving tops.
1. Due to structural problems, there is a high risk of water leakage.
2. The workability is poor due to the mounting position.
3. Conventional water-saving tops for general faucets and showers have a short passage for the orifice and are made of metal.
Japanese Patent Laid-Open No. 9-60749 Registered Utility Model No. 3060033

The present invention is a water-saving flush valve used in a water flow path such as a flush toilet, and there is no risk of water leakage from a conventional water-saving coma, and more than a certain level of water-saving effect can be obtained with improved workability. The purpose is to provide such a water-saving frame.
In addition, it aims to suppress running noise when installing water-saving tops for general faucets and showers.

The water-saving piece of the present invention has a piece main body fitted into the water discharge pipe, and an outer flange projecting all around the tip of the water discharge pipe of the piece main body. In a water-saving coma for a flush toilet flush valve, in which a linear orifice penetrating through the orifice is formed, and the valve case and the water discharge pipe communicate with each other, the outer periphery of the outer flange is the same as the outer periphery of the water discharge pipe The water-saving piece is fixed to the water discharge pipe by being formed into a diameter, and the inner peripheral surface of the water discharge pipe is closely fitted into the outer peripheral surface of the top body.
The material of the water-saving piece is a synthetic resin.
The water-saving top of the present invention is a general faucet / shower in which a top main body and a linear orifice penetrating vertically are formed in the center of the top main body, and the valve case and the water discharge pipe communicate with each other through the orifice. In the water-saving top, a water pipe extending from the top body is provided to lengthen the water passage of the orifice portion, thereby reducing the sound of running water when water is discharged.
The material of the water-saving piece is a synthetic resin.

The water-saving piece of the present invention has a piece main body fitted into the water discharge pipe, and an outer flange projecting all around the tip of the water discharge pipe of the piece main body. Is formed, and the outer periphery of the outer flange portion is formed to have the same diameter as the outer periphery of the water discharge pipe. Since the water-saving piece is fixed to the water discharge pipe by closely fitting the inner peripheral surface of the water discharge pipe to the outer peripheral surface of the main body, the attachment position of the water-saving piece is at the tip of the water discharge pipe (cleaning pipe). Therefore, since the packing for preventing water leakage can fully demonstrate its performance (the packing is the proper way to install the flush valve), no water leakage occurs even if the insertion angle of the water discharge pipe (cleaning pipe) is slightly deviated from the vertical. .
In the water-saving top of the present invention, in the connection between the water discharge pipe to which the water-saving top is fixed and the valve case, the water discharge side of the valve case is integrally formed with a water discharge side connection pipe having a thread on the outer periphery. On the water discharge pipe side, a flange having a thickness dimension of the water discharge side connecting pipe that is inscribed in the outer periphery of the water discharge pipe is formed, and on the inner peripheral surface of the union joint, a trough that is screwed to a thread of the water discharge side connecting pipe A screw is formed, and a rubber O-ring and a metal annular plate are disposed between the end of the water discharge side connecting pipe and the flange of the union joint, and the union joint is screwed into the water discharge side connecting pipe. Since the union joint is tightened, it is fixed in a liquid-tight manner by a rubber O-ring and a metal ring plate. Therefore, the installation position of the water-saving top is the tip of the water discharge pipe (cleaning pipe). The water discharge pipe (cleaning pipe) Even if the deep has been inserted into Shubarubu, it is mounted easily without the need to process such as cutting the water discharge pipe (wash pipe).
In addition, even if the owner requested to restore the current situation such as removing the water-saving piece at a later date, the original restoration is only to remove the water-saving piece, so the workability is also good, and it is necessary to purchase and replace a water discharge pipe (cleaning pipe) newly There is no wasteful expense.

One embodiment of the water-saving piece of the present invention will be described below with reference to the accompanying drawings.
In a conventional water-saving flush valve, a main valve, a pilot valve, and a stem connected to the pilot valve are housed in a valve case, and a push button or a handle lever supported on the front surface of the valve case so as to be able to advance and retreat. The pilot valve is opened by pushing it in, and the main valve is opened by the pressure difference between the water supply side and the water discharge side of the main valve so that water flows from the water supply side to the water discharge side.
As shown in FIG. 1, a water discharge side connection pipe 3 having a thread 2 cut on the outer periphery is integrally formed on the water discharge pipe 5 side of the valve case 1 as shown in an enlarged cross-sectional view. The union joint 4 is screwed together.
A flange 6 having a thickness dimension of the water discharge side connecting pipe 3 inscribed in the outer periphery of the water discharge pipe 5 is formed on the water discharge pipe 5 side of the union joint 4, and the water discharge side is formed on the inner peripheral surface of the union joint 4. A trough screw 7 to be screwed into the thread 2 of the connecting pipe 3 is provided.
A rubber O-ring 9 and a metal ring plate 10 are sandwiched between the end 8 of the water discharge side connecting pipe 3 and the flange 6 of the union joint 4. That is, from the bottom, the flange 6 of the union joint 4, the rubber O-ring 9, the metal ring plate 10, and the end 8 of the water discharge side connection pipe 3 are arranged in this order, and the liquid tightness between the valve case 1 and the water discharge pipe 5 Is guaranteed by tightening the union joint 4.

As shown in FIG. 2, the water-saving top 11 of the present invention includes a top main body 12 fitted into the water discharge pipe 5, and an outer casing projecting over the entire circumference of the tip of the water discharge pipe 5 of the top main body 12. A straight orifice 14 penetrating vertically is formed in the center of the top body 12, and the valve case 1 and the water discharge pipe 5 are communicated with each other by the orifice 14.
The outer periphery of the outer flange portion 13 is formed to have the same diameter as the outer periphery of the water discharge pipe 5, and the inner peripheral surface of the water discharge pipe 5 is closely fitted in the outer peripheral surface of the top body 12 to enter the water discharge pipe 5. The water-saving piece 11 is fixed.

As for the material of the water-saving top 11 used in the present invention, a metal or resin product prototype was manufactured, and the workability and the mounting state were examined from various aspects. In the case of metal, 1) on the inner surface of the water discharge pipe It is very difficult to process a water-saving piece that can be mounted without deforming the water discharge pipe, and even if it can be done, high processing accuracy is required, which increases the manufacturing cost. 2) Since the water discharge pipe is made of metal, there is a possibility that electric corrosion that occurs due to the adhesion of different kinds of metals may occur depending on the material used for the water-saving top. 3) If the machining accuracy is reduced and the diameter of the inner surface of the water discharge pipe does not match, if it cannot be attached or is too small, the water discharge pipe and the water-saving piece vibrate during water discharge, and abnormal noise is generated.
In the case of resin, 1) Since the water-saving piece can be deformed to some extent, it can be attached to the inner surface of the water discharge pipe without damaging the water discharge pipe. 2) There is no concern about the electric corrosion that occurs between dissimilar metals. 3) There is less concern that the processing accuracy will be lower than metal.
Polyacetal resin (with glass fiber) is the most suitable material for the above reasons, resistance to hot water supply temperature and strength to withstand flowing water pressure.

Next, the assembly work using the water-saving piece of the present invention will be described below based on the drawings.
As shown in the exploded perspective view of FIG. 3, until the top main body 12 of the water-saving piece 11 is fitted into the tip opening of the water discharge pipe 5 and the outer flange 13 of the water-saving piece 11 hits the tip of the water discharge pipe 5. The water-saving piece 11 is inserted and fixed to the tip of the water discharge pipe 5 (the state shown in the enlarged sectional view of FIG. 1).
Next, the union joint 4 is fitted into the water discharge pipe 5 with the flange 6 facing down, and a rubber O-ring 9 and a metal ring plate 10 are inserted into the water discharge pipe 5 in the order shown in FIG. The O-ring 9 and the metal ring plate 10 abut against the flange 6).
Then, as shown in FIG. 1, when the tip of the water discharge pipe 5 is inserted until it comes into contact with the stopper 15 in the valve case 1, a rubber O-ring 9 fitted on the outer periphery of the water discharge pipe 5 is made of a metal circle. The ring plate 10 comes into contact with the end 8 of the water discharge pipe side connecting pipe 3 of the valve case 1.
In this state, the valley thread 7 of the union joint 4 is screwed to the thread 2 of the water discharge side connecting pipe 3, and the rubber O-ring 9 and the metal annular plate 10 are tightened by the flange 6 of the union joint 4. Fix tightly.
The tip of the water discharge pipe 5 is inserted into the water discharge side connecting pipe 3, and the water discharge pipe 5 does not rattle.
This completes the assembly work using the water-saving flash valve of the present invention.

Furthermore, a drawing is shown about the other Example of the water-saving top 11. FIG.
4A is a plan view, FIG. 4B is a front view, FIG. 4C is a bottom view, and FIG. 4D is a cross-sectional view.
FIG. 5 shows an improvement to the water-saving piece 11 of FIG. 2 that has a wedge-shaped tip on the insertion side to facilitate insertion, and a plurality of vertical protrusions provided on the outer peripheral wall to make it difficult to remove. (A) a plan view, (b) a front view, (c) a bottom view, and (d) a sectional view.
FIG. 6: is a water-saving top used for the faucet of a water supply, (a) Top view, (b) Front view, (c) Bottom view, (d) Cross-sectional view.
FIG. 7: is another water-saving top used for the faucet of a water supply, (a) Top view, (b) Front view, (c) Bottom view, (d) Cross-sectional view.

  In the case of water-saving tops for general faucets and showers, the conventional water-saving tops have a short water passage as shown in FIG. 6 and many of them generate water flow noise. However, as shown in FIG. As a result of the experiment, it was possible to suppress the noise of running water by providing a water pipe and reworking the flowing water channel of the orifice part longer. Also, with regard to the material used for noise countermeasures, polyacetal is the same material used for the production of water-saving tops for toilet flush valves, since plastics are less likely to cause noise due to collisions between water outlets and water-saving tops due to running water pressure when discharging water. The conclusion was reached that the resin (with glass fiber) is optimal.

It is an expanded sectional view of a water-saving type flash valve. It is sectional drawing of the water-saving top of this invention. FIG. 5 is an exploded perspective view showing the connection of a water discharge pipe, a water-saving piece, a rubber O-ring, and a metal ring. It is explanatory drawing of the water-saving top demonstrated in the Example. It is explanatory drawing of another water saving top. It is explanatory drawing of the water-saving top used for the tap of water supply. It is explanatory drawing of the other water saving top used for the faucet of water supply. It is sectional drawing of the conventional water saving type | mold flash valve. It is a perspective view of the conventional flow control piece.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Valve case 2 Screw thread 3 Water discharge side connection pipe 4 Union joint 5 Water discharge pipe 6 Flange 7 Valley screw 8 End 9 Rubber O-ring 10 Metal ring plate 11 Water-saving top 12 Top body 13 Outer flange 14 Orifice 15 Stopper Fragment

Claims (4)

A linear orifice that has a top body fitted in the water discharge pipe and an outer flange projecting over the entire circumference of the water discharge pipe tip of the top main body, and that penetrates vertically in the center of the top of the frame main body. In the water-saving piece for a flush toilet flush valve in which the valve case and the water discharge pipe are communicated with each other by the orifice,
The outer periphery of the outer flange portion is formed to have the same diameter as the outer periphery of the water discharge pipe, and the water-saving top is fixed to the water discharge pipe by closely fitting the inner peripheral surface of the water discharge pipe to the outer peripheral surface of the top body. A water-saving coma characterized by that.   The water-saving top according to claim 1, wherein a material of the water-saving top is a synthetic resin. In the general water faucet / shower water-saving top in which a linear orifice penetrating up and down is formed in the center of the top body and the top of the top body, and the valve case and the water discharge pipe are communicated by the orifice.
A water-saving top comprising a water pipe extending from the top body to lengthen a water passage in an orifice portion to reduce a running sound when water is discharged.   The water-saving top according to claim 3, wherein the material of the water-saving top is a synthetic resin.

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