JP2001220798A - Toilet flushing tank device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a valve element from being abruptly closed by negative pressure produced by the weight of the valve element, the water head of flush water remaining in a water storage tank and acting on the valve element, and the discharge of the flush water when the valve element is closed after the flush water in the water storage tank is drained until water reaches a predetermined level. SOLUTION: A resistance member which interferes with the flush water left in the water storage tank when the valve element is closed is provided on the valve element, either directly or indirectly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water storage tank for storing cleaning water, and a valve mounted on the water storage tank which, once opened, drains the cleaning water and opens the valve by the buoyancy of the cleaning water. The present invention relates to a valve device provided with a valve body that is maintained and closed when the flush water reaches a predetermined water level, and a toilet flush tank device provided with valve opening means for opening the valve body of the valve device.

[0002]

2. Description of the Related Art Conventionally, as this type of toilet flush tank device, for example, as shown in FIG. 1 of Japanese Patent Application Laid-Open No. 9-88149, a water reservoir for storing flush water, and a water tank attached to the water reservoir and once opened. A first valve body that maintains an open state by the buoyancy of the wash water while draining the wash water when the valve is opened, and closes the valve when the wash water reaches a predetermined water level; The valve seat is provided at one end with a body seated and in a watertight state. The valve seat serves as a drainage passage for the first valve body, and once opened, drains the washing water while opening the valve state by the buoyancy of the washing water. A valve device having a second valve body that is kept closed when the washing water reaches a predetermined water level lower than a water level at which the first valve body is closed, and the valve device of the valve device Some include a valve opening means for selectively opening the first valve element and the second valve element.

[0003] This type of toilet flush tank device has a relatively simple structure of the valve device because the control of drainage of flush water is performed mechanically by buoyancy acting on the valve body.
Since the water stop of the valve device is performed by the weight of the valve body and the head pressure of the washing water remaining in the water storage tank acting on the valve body and the negative pressure generated by the drainage of the washing water, the reliability is high, and the valve is opened. Means can be selected between small cleaning performed by opening the first valve body and large cleaning performed by opening the second valve body, so that washing water can be saved.

[0004]

However, in the conventional toilet bowl washing tank device, when the flush water in the water storage tank is drained to a predetermined water level and the valve is closed, the weight acts on the valve body and acts on the valve body. Since the valve body is rapidly closed by the head pressure of the washing water remaining in the water storage tank or the negative pressure generated by the drainage of the washing water, the valve closing noise increases and the valve body requires a predetermined strength or more. There was a problem. Therefore, in the present invention, a toilet flushing tank device that has a relatively simple structure and high reliability of water stoppage, reduces valve closing noise, reduces strength required for the valve body, and increases the degree of freedom in designing the valve body. The purpose is to provide.

[0005]

According to a first aspect of the present invention, there is provided a water storage tank for storing cleaning water, wherein the cleaning water is attached to the water storage tank and is opened once the valve is opened. A valve device having a valve body that maintains an open state by the buoyancy of the washing water while draining water and that closes when the washing water reaches a predetermined water level, and opens the valve body of the valve device And a valve opening means for causing the valve body to close or close the valve body directly or indirectly with a resistance member that interferes with the wash water remaining in the water storage tank when the valve body closes. It is characterized by having been provided.

According to a second aspect of the present invention, there is provided a water storage tank for storing cleaning water, and a valve opened by the buoyancy of the cleaning water while draining the cleaning water once the valve is mounted on the water storage tank and opened. And a first valve body which is closed when the washing water reaches a predetermined water level, and a valve seat at which the first valve body is seated to be in a water-tight state at one end. Once the valve becomes a drain passage for the body, and once opened, the valve maintains an open state by the buoyancy of the wash water while draining the wash water, and the wash water is above the water level at which the first valve body is closed. And a valve device provided with a second valve body that closes when a predetermined low water level is reached, and an opening for selectively opening the first valve body and the second valve body of the valve device. A toilet flushing tank device provided with a valve means, wherein the storage is performed when the first valve body and the second valve body are closed. Wherein the interfering resistor member and the cleaning water remaining by providing directly or indirectly to the first valve body in the tank.

According to a third aspect of the present invention, the resistance member is provided integrally with the valve body.

[0008]

According to the first aspect of the present invention, when the valve body is closed, the resistance member provided directly or indirectly on the valve body interferes with the washing water remaining in the water storage tank. Accordingly, the valve body is not suddenly closed. This makes it possible to provide a toilet flushing tank device that reduces the valve closing sound of the valve body, reduces the strength required for the valve body, and increases the degree of freedom in designing the valve body. Note that the resistance member directly provided on the valve body referred to here indicates a state in which a resistance member formed integrally with the valve body or separately from the valve body is attached with an adhesive or a screw, and the like. The indirectly provided resistance member may be, for example, a float attached to a pulling member that connects the valve element and the valve opening means, or a float member that links the valve element and the valve opening means as a configuration for giving buoyancy to the valve element. Indicates a state in which the float is integrated with the float or attached with an adhesive or a screw. Further, the interference between the resistance member and the cleaning water serves as a damper utilizing the fluid resistance of the resistance member.

According to the second aspect of the present invention, when the first valve element is opened by the valve opening means, the first valve element is closed when the first valve element closes. Since the resistance member provided directly or indirectly on the first valve body interferes with the washing water remaining in the water storage tank, the first valve body is not suddenly closed. This makes it possible to provide a toilet flushing tank device that reduces the valve closing sound of the first valve body, reduces the strength required for the valve body, and increases the degree of freedom in designing the valve body.

When the second valve element is opened by the valve opening means, the resistance member provided directly or indirectly on the first valve element when the second valve element closes. The first valve body could not be seated on the first valve seat provided on the second valve body to interfere with the washing water remaining in the tank, and the water hole of the second valve body was opened. Since the state becomes the state, the head pressure of the washing water remaining in the water storage tank acting on the second valve body and the negative pressure generated by the drainage of the washing water become small, so the second valve body rapidly closes. Never be.

Next, the first valve element is closed. When the first valve element is closed, it is as described above. Accordingly, the toilet flush tank reduces the valve closing sound of the first valve body and the second valve body, reduces the strength required for the first valve body and the second valve body, and increases the degree of freedom in designing the valve body. A device can be provided. Here, the resistance member directly provided on the first valve body is a resistance member integrated with the first valve body or formed separately from the first valve body and attached with an adhesive or a screw. The resistance member indirectly provided on the first valve body is, for example, attached to a pulling member that links the first valve body and the valve-opening means, or a buoyant force applied to the first valve body. When the float is attached to the pull-up member that links the first valve body and the valve opening means, the state where the float is integrated or attached with an adhesive or a screw is shown.

According to the third aspect of the present invention, since the resistance member is provided integrally with the valve body, the number of parts can be reduced, and the number of assembly steps and molding equipment can be reduced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIGS. 1 to 4, a water storage tank A is made of a synthetic resin, and a resin tank A1 and a ceramic cover A2 provided so as to cover the outer surface of the resin tank A1 have a double structure. The valve device B is composed of a first valve element 1 and a second valve element 2 which are arranged one above the other, and the first valve element 1 and the second valve element 2 are connected to a resin tank A1.
Are mounted on the hinge shafts 7a and 7b disposed at the bottom of the first valve element so as to be swingable in the vertical direction, respectively, and the first valve element 1 and the second valve element 2 and the opening disposed at the upper part of the resin tank A1. The valve means C is linked with the valve means C via pulling members D1 and D2 such as ball chains, and the first valve element 1 and the second valve element 2 are selectively pulled up by the operation of the valve opening means C to provide a valve device B. The valve is opened.

As shown in FIG. 1, the first valve element 1 is, for example, A
The upper surface is closed with a synthetic resin such as BS resin, and is integrally molded into a cylindrical shape having only a bottom surface opened. An annular float chamber 1a having only a bottom surface opened therein is integrally formed and formed inside the float chamber 1a. Buoyancy is provided by the accumulated air. At the lower end of the outer peripheral surface of the first valve body 1, an annular engaging concave portion 1 b composed of a pair of upper and lower ridges projects radially outward of the first valve body 1 for attaching a lid member 3 described later. In this way, the die can be easily removed by preventing anything from protruding from the inner peripheral surface of the float chamber 1a. Further, the outer peripheral surface of the first valve body 1 interferes with the washing water remaining in the water storage tank A when the first valve body 1 and the second valve body 2 close as shown in FIGS. The resistance member E is integrally formed.

The lid member 3 is integrally formed of an elastic material such as rubber or TPE (thermoplastic elastomer) into a thin circular sheet covering the bottom surface of the float chamber 1a, and the upper end thereof is fitted with the engagement recess 1b. An engaging projection 3a is formed by projecting radially inward, and a first integrally formed on the bottom surface of the lid member 3 so as to surround the water hole 2b on the upper end surface of the second valve body 2. A seating portion 3b is formed so as to face and abut against the valve body 1 of the above, and the engaging ridge 3a and the seating portion 3b are connected in a substantially U-shaped cross section, and are disposed so as to be substantially parallel to each other in the vertical direction. Thereby, the seating portion 3b is easily elastically deformed toward the space between the engaging ridge portion 3a. Further, the seat portion 3b covers the bottom surface where the float chamber 1a opens, so that the air accumulated in the float chamber 1a does not escape with the vertical swing of the first valve body 1. As described above, a water draining hole 3c is formed in a portion of the seating portion 3b which does not abut against the first valve seat 11, and the water draining hole 3c is formed.
The cleaning water that has entered the float chamber 1a from c is drawn out.

As shown in FIG. 1, the second valve body 2 is, for example, A
An annular float chamber 2a whose top and bottom are opened is integrally formed of a synthetic resin such as BS resin, and an annular float chamber 2a whose only bottom is open is formed integrally along the peripheral side surface, and is accumulated in the float chamber 2a. Buoyancy is given by the air
On the inner peripheral surface of the float chamber 2a, a water passage hole 2b having a smaller diameter than the second valve seat 12 formed by integrally molding with the bottom of the resin tank A1 is formed so as to penetrate vertically. I have. At the lower end of the outer peripheral surface of the second valve body 2, an annular engaging recess 2 c formed of a pair of upper and lower ridges is formed at the lower end of the outer peripheral surface of the second valve body 2 in order to attach a lid member 4 described later in the same manner as the first valve body 1. Projecting radially outward of the second valve body 2 to form the water passage hole 2b
The mold is easily removed by not projecting anything.

The cover member 4 is integrally formed of an elastic material such as rubber, TPE (thermoplastic elastomer) or the like into a thin circular sheet covering the bottom surface of the float chamber 2a, and is fitted on the upper end thereof with the engaging recess 2c. An engaging projection 4a is formed so as to protrude radially inward, and a seating portion 4b is formed on the bottom surface of the lid member 4 so as to oppose and contact the second valve body 2 opened in the resin tank A1. The engaging ridge 4a and the seating portion 4b are connected in a substantially U-shaped cross section, and are arranged so as to be substantially parallel to each other in the vertical direction. Elastic deformation toward the space. Further, the inner end of the seat portion 4b is connected to the water passage hole 2b.
To the lower end of the inner peripheral surface of the float chamber 2a forming
By covering the bottom surface of the float chamber 2a with an opening, the air accumulated in the float chamber 2a due to the vertical swing of the second valve body 2 does not escape. A drain hole 4c is formed in a portion that does not abut against the second valve seat 12, and the washing water that has entered the float chamber 2a from the drain hole 4c is drained to the outside.

The first valve body 1 and the second valve body 2
As shown in FIG. 1 and FIG.
The supporting arms 5 and 6 are connected to each other over a swinging supporting portion 20 which is erected from the tip of the supporting arms 5 and 6 by being integrally formed on the bottom of the resin tank A1. Hinge means 7, 7 for swingably supporting are interposed. The hinge means 7, 7 comprise hinge shafts 7a, 7b, and bearing recesses 7c, 7d which are detachably engaged with the hinge shafts 7a, 7b in the vertical direction. . In the case of this embodiment, the hinge shafts 7a and 7b are integrally formed on the swing support portion 20 so as to have a predetermined interval in the vertical direction and are protruded substantially horizontally, or the hinge shafts 7a and 7b are separately formed. , 7b are inserted through holes formed in the swing support portion 20 to project substantially horizontally, and bearing recesses 7c, 7d are respectively formed at the distal ends of the support arms 5, 6 from the lower end surfaces thereof in a front inverted U-shape. The bearing recesses 7c and 7d are positioned just above the hinge shafts 7a and 7b, and then the support arms 5 and 6 are pressed down so that they are engaged with each other. Protrusions 7e and 7f are protruded from the tips of the hinge shafts 7a and 7b as shown in FIG. 4, so that the bearing recesses 7 of the support arms 5 and 6 engaged with the hinge shafts 7a and 7b are provided.
c, 7d are prevented from moving in the axial direction of these hinge shafts 7a, 7b.

Further, ribs 5a and 6a are respectively laid horizontally between the support arms 5 and 6, and the support arms 5, 6
The distance between the support arms 5 and 6 is prevented from widening at the time of releasing the mold while increasing the strength of the first valve body 1 and the second valve body 2 as shown in FIG. Further, the ribs 5a and 6a closer to the center of the swing than their swing trajectories are brought into contact with the swing support portion 20 to restrict further swing. The first valve element 1 and the second valve element 2 are
The ribs 5a and 6a are not limited to restricting the swing by abutting against the swing support portion 20, but the first valve body 1 and the second valve body 2 are directly connected to the swing support portion 20 although not shown. The swing may be regulated by abutting, or the stopper may be provided in the swing support portion 20 with which the first valve body 1 and the second valve body 2 abut.

Next, the operation of the toilet flush tank device will be described. First, as shown in FIG. 1, the seat 3b of the first valve body 1 is brought into contact with the first valve seat 11, and the second valve body 2
In the state in which the seating portion 4b is in contact with the second valve seat 12, the seating portions 3b and 4b bend toward the space between the engaging ridges 3a and 4a, and The valve device B comes into close contact, and the valve device B is reliably closed. Then, when the valve opening means C shown in FIGS. 3 and 4 is rotated in, for example, a counterclockwise direction, the first valve body 1 is pulled up via the pulling member D1, and the first valve body 1 is accordingly moved as shown by a two-dot chain line in FIG. Only one valve element 1 is opened to perform small cleaning. At this time, the rib 5a of the first valve element 1 that has swung upward is hit against the swing support portion 20, and further swinging is restricted.

When the valve opening means C is rotated clockwise, for example, the second valve body 2 is pulled up via the pulling member D2, and as shown in FIG. 2, the first valve body 1 and the second valve body 2 are pulled up. Are opened at the same time, and large washing is performed. At this time, the first valve body 1 and the second valve body 2 that have been swung upward are connected to the respective ribs 5.
a and 6a abut against the swing support portion 20, and further swing is restricted. In the case of small washing, the head pressure applied to the first valve body 1 is reduced by the start of drainage. Therefore, even if the operation of the valve opening means C is not held and the first valve body 1 is lifted, the float is not required. The state where the first valve body 1 is pulled up by the buoyancy of the chamber 1a is maintained, and the drainage is continued. At this time, the water hole 2 of the second valve body 2 is larger than the inner diameter of the second valve seat 12.
Since the diameter of b is small and the differential pressure of the area difference is applied to the second valve body 2, the second valve body 2 is not opened by the buoyancy of the second valve body 2.

When the washing water in the resin tank A1 reaches a predetermined water level due to drainage, the buoyancy of the first valve body 1 acts on the weight of the first valve body 1 and on the first valve body 1. Since the head pressure of the washing water remaining in the resin tank A1 and the negative pressure generated by the drainage of the washing water increase, the first valve body 1
Cannot be pulled up, and the first valve body 1 descends to close the valve, so that drainage is stopped. When this valve is closed,
When the resistance member E provided integrally with the first valve body 1 interferes with the cleaning water remaining in the resin tank A1,
The first valve element 1 is prevented from being rapidly closed.

Further, in the case of large washing, the water pressure is hardly applied to the first valve body 1 and the second valve body 2 due to the start of drainage, so that the second valve body 2 must not be raised. However, the state of being lifted by the buoyancy of the first valve body 1 and the second valve body 2 is maintained, and the drainage is continued. First, when the water level of the washing water in the resin tank A1 drops to the position of the first valve body 1 due to the drainage and comes into a state of protruding from the water surface,
Since the buoyancy of the first valve element 1 is reduced, the first valve element 1 cannot be held in a raised state, and the first valve element 1
Is seated on the first valve seat 11 provided on the second valve body 2.

Next, when the washing water in the resin tank A1 reaches a predetermined water level due to the further drainage, the weight of the second valve body 2 and the first valve body 1 becomes greater than the buoyancy of the second valve body 2. Since the head pressure of the washing water remaining in the resin tank A1 acting on the first valve body and the second valve body 2 and the negative pressure generated by the drainage of the washing water increase, the second valve body 2 Cannot be pulled up, and the second valve body 2 descends to close the valve, so that drainage is stopped. When the second valve body 2 is closed, the resistance member E provided integrally with the first valve body 1
The first valve element 1 interferes with the washing water remaining in the first element 1
Can not be seated on the first valve seat 11 provided on the second valve body 2 and the water passage hole 2b of the second valve body 2 is in an open state. Since the head pressure of the washing water remaining in the tank and the negative pressure generated by the drainage of the washing water are reduced, the second valve body 2 is not suddenly closed. Finally, the first valve body 1 is closed. When the first valve body 1 is closed, it is as described above.

In the embodiment described above, the cleaning valve B is composed of a first valve element 1 and a second valve element 2 which are arranged one above the other. Is mounted on the hinge shafts 7a and 7b disposed at the bottom of the resin tank A1 so as to be swingable in the vertical direction, respectively. However, the present invention is not limited thereto. May be attached to one hinge shaft so as to be vertically swingable.

Further, the hinge shafts 7a, 7
b to protrude, bearing recesses 7
The notches c and 7d are formed, but the present invention is not limited to this. Conversely, the notches 7c and 7d are formed in the swing support portion 20 and the hinge shafts 7a and 7b are formed in the distal ends of the support arms 5 and 6. You may protrude.

The float chambers 1a and 2a are provided to give buoyancy to the first valve body 1 and the second valve body 2.
The structure for giving buoyancy is not limited to this, and as shown in FIG. 6, the float F is attached to the pulling members D1 and D2 that link the first valve body 1 and the second valve body 2 with the valve opening means C. Alternatively, the material of the first valve body 1 and the second valve body 2 may be polypropylene, polyethylene, or the like having a specific gravity smaller than that of the washing water.

The resistance member E is formed integrally with the first valve body 1, but the invention is not limited to this. After being formed separately, the first valve body 1 and the adhesive or the like can be used. It may be attached with a screw or the like, and may be attached not directly but indirectly to the first valve body 1, for example, to a pulling member D1 that links the first valve body 1 and the valve opening means C, As a configuration for providing buoyancy without providing a float chamber 1a as a configuration for providing buoyancy to the first valve body 1, as shown in FIG.
When the float F is attached to the pulling member D1 which links the float F, the float F may be attached to the float F integrally or with an adhesive or a screw.

Further, the water storage tank A, the valve opening means C and the pulling members D1 and D2 are not limited to those shown in the figure, but may have other structures. Then, the water storage tank A is replaced with the resin tank A
1 and the ceramic cover A2 have a double structure, but the present invention is not limited to this, and it goes without saying that a conventionally known single structure may be used.

[0030]

According to the present invention, the sound generated when the valve is closed can be reduced while the structure is simple and high reliability of water shutoff is ensured. A toilet bowl cleaning tank device with an increased degree can be realized.

[Brief description of the drawings]

FIG. 1 is a partial vertical front view of a toilet flushing tank device showing an embodiment of the present invention, in which a valve opening state of a first valve body is indicated by a two-dot broken line.

FIG. 2 is a partial vertical sectional front view showing a first valve body and a second valve body of the present invention in an open state;

FIG. 3 is a reduced vertical sectional front view showing the entire apparatus of the present invention.

FIG. 4 is a reduced cross-sectional plan view of the present invention.

FIG. 5 is a partial vertical front view showing a modified example of the valve body of the present invention.

[Explanation of symbols]

 A ... water storage tank A1 ... resin tank A2 ... ceramic cover B ... valve device 1 ... first valve body 1a, 2a ... float chamber 1b ... engagement recess 2 ... second valve body 2b ... water hole 2c ... Joint recesses 3, 4 ... Lid members 3a, 4a ... Engagement ridges 3b, 4b ... Seating parts 3c, 4c ... Drain holes 5, 6 ... Support arms 5a, 6a ... Ribs 7 ... Hinge means 7a, 7b ... Hinge Shafts 7c, 7d: Bearing recess 11: First valve seat 12: Second valve seat 20: Swing support C: Valve opening means D1, D2: Pulling member E: Resistance member F: Float

Claims (3)

[Claims] 1. A water storage tank for storing cleaning water, and a valve attached to the water storage tank, which is opened once the valve is opened. A toilet flush tank device comprising: a valve device having a valve body that is closed when a predetermined water level is reached; and valve-opening means for opening the valve body of the valve device. A toilet flush tank device, wherein a resistance member that interferes with the flush water remaining in the water storage tank when the valve is closed is provided directly or indirectly on the valve body. 2. A water storage tank for storing washing water, and a valve attached to the water storage tank, which is opened once the valve is opened. A first valve body that is closed when a predetermined water level is reached, and a valve seat on which the first valve body is seated to be in a watertight state at one end, and serves as a drain passage for the first valve body. Once the valve is opened, the valve is kept open by the buoyancy of the washing water while draining the washing water, and the washing water reaches a predetermined water level lower than the water level at which the first valve body is closed. A toilet device comprising a valve device having a second valve element that is brought into a closed state, and valve opening means for selectively opening the first valve element and the second valve element of the valve device. A washing tank device, wherein the washing valve remaining in the water storage tank when the first valve body and the second valve body are closed. A toilet flushing tank device, wherein a resistance member that interferes with purified water is provided directly or indirectly on the first valve body. 3. The toilet flushing tank device according to claim 1, wherein the resistance member is provided integrally with the valve body.