JPH11158967A - Washing water tank for flush toilet stool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent occurrence of dew condensation on the outer face of a tank body by providing an insulator along substantially the whole inner face of the tank body having a drain opening formed on the bottom part, protruding a damming projection surrounding the drain hole on the inner face of the bottom part of the tank body, and blocking a part between the edge end and the outer face of the insulator. SOLUTION: An insulator 4 such as polystyrene foam is formed in the form of a vessel to be fitted in a tank body 3, and provided so that the outer face is tightly abutted on substantially the whole inner face of the tank body 3. A damming projection 5 surrounding a drain opening 2 is formed in the inner face of the bottom part 1 of the tank body 3 in the form of a sharpness, the insulator 4 is tightly fixed on the inner face of the tank body 3 in the neighborhood of the damming projection 5, and a part between the edge end and the outer face of the insulator 4 is blocked. Thereby filling work of sealing material is not needed, and even if washing water invades in a gap between the inner face of the tank body 3 and the outer face of the insulator 4, occurrence of dew condensation can be prevented on the outer face of the tank body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush water tank for flush toilets for storing flush water for flushing the inside of flush toilets after use.

[0002]

2. Description of the Related Art As shown in FIG. 7, there has been known a flush water tank for a flush toilet in which a heat insulating material 4 is provided along substantially the entire inner surface of a tank body 3 having a drain port 2 formed in a bottom portion 1 as shown in FIG. ing. The flush water tank for flush toilet is installed and fixed on the rear end of the toilet 8, and the flush water stored in the tank body 3 is fed into the toilet 8, and the flush water is flushed in the toilet 8. It is to be washed.

In this case, the heat insulating material 4 is formed of a synthetic resin foam into a substantially container shape and is fitted into the tank body 3, and the bottom of the heat insulating material 4 has a drain port 2 of the tank body 3.
A notch opening 16 is formed at a position corresponding to. The washing water is stored inside the substantially heat insulating material 4 and sent from the drain port 2 into the toilet 8. In general, a drainage tool (not shown) having a Douglas valve, a float valve, and the like is attached to the drainage port 2, and the drainage tool opens and closes the toilet 8 through the drainage port 2 by opening and closing the valve. Wash water is sent or stopped.

[0004] The tank body 3 is made of ceramic or synthetic resin and is integrally formed in a substantially container shape with an upward opening. The washing water stored in the tank body 3 is cold, the surrounding air is warm and the space between the two is warm. When the temperature difference is large, if the heat insulating material 4 is not provided alongside, dew condensation occurs on the outer surface of the tank body 3. However, heat transfer between the washing water and the tank body 3 is blocked by the heat insulating material 4, so that dew condensation on the outer surface of the tank body 3 is temporarily prevented.

[0005]

However, in the above-mentioned prior art, when the cleaning water enters the gap between the inner surface of the tank body 3 and the outer surface of the heat insulating material 4, the heat insulating effect of the heat insulating material 4 is reduced. There is a problem that dew condensation occurs on the outer surface of the tank main body 3 due to a temperature difference between the invading cleaning water and the surrounding outside air.

A gap between the inner surface of the tank body 3 and the upper edge of the heat insulating material 4 and the opening edge of the cutout opening 16 is filled with a sealing material to prevent washing water from entering the gap. It can also be prevented. However, the work of filling the sealing material is difficult inside the tank body 3 and is difficult.
In addition, a technique is required to fill the sealing material so that the gap edge portion is completely sealed, and there is a problem that it takes time and effort.

[0007] The present invention has been invented in order to solve all the problems in the above-mentioned conventional technology, that is, the problem is that there is no need to perform an operation of filling a sealing material.
Even if washing water enters the gap between the inner surface of the tank body and the outer surface of the heat insulating material, dew condensation is prevented from occurring on the outer surface of the tank body, and the flush toilet can easily and surely obtain dew-proof performance. It is to provide a washing water tank for use.

[0008]

According to a first aspect of the present invention, there is provided a flush water tank for a flush toilet, wherein a heat insulating material is provided along substantially the entire inner surface of a tank body having a drain port formed at a bottom portion. A damming ridge surrounding the drain port is provided on the inner surface of the bottom to protrude to close the gap between the leading edge of the damping ridge and the outer surface of the heat insulating material.

Therefore, in this case, since the heat insulating material is provided along substantially the entire inner surface of the tank body, the washing water stored inside the heat insulating material in the tank body is cold, the surrounding outside air is warm, and the temperature difference between the two is reduced. Even if it is large, heat transfer is blocked by the heat insulating material between the washing water and the tank main body, thereby preventing dew condensation on the outer surface of the tank main body.

In addition, a damming ridge surrounding the drain port is projected from the inner surface of the bottom of the tank body, and the gap between the leading edge of the damping ridge and the outer surface of the heat insulating material is closed. Even if the washing water enters the gap between the inner surface of the main body and the outer surface of the heat insulating material, the washing water is blocked by the damming ridges and is accumulated in the gap without flowing to the drain port. Even if the washing water stored inside the heat insulating material is replaced with a new cold water, the heat insulating action of the heat insulating material causes heat transfer through the tank body to cause the outside water around the tank to accumulate in the surrounding air with time. And the temperature difference between the ambient air and the cleaning water accumulated in the gap is eliminated, thereby preventing dew condensation on the outer surface of the tank body.

[0011] In addition, even in the event that washing water enters the gap between the inner surface of the tank body and the outer surface of the heat insulating material, the dew-proof performance is exhibited without any trouble. It becomes reliable, and the work of filling the sealing material becomes unnecessary, and the same anti-dew performance can be obtained with a simple work.

According to a second aspect of the present invention, there is provided a flush water tank for a flush toilet according to the first aspect, wherein the heat insulating material is formed in a substantially container shape and fitted into the tank body. The heat insulating material is provided along substantially the entire inner surface of the tank body such that the outer surface thereof is in close contact with the heat insulating material.

Therefore, in this case, particularly, since the heat insulating material formed in a substantially container shape is fitted into the tank main body, the heat insulating material is easily provided along substantially the entire inner surface of the tank main body.
In addition, at this time, since the outer surface of the heat insulating material is in close contact with substantially the entire inner surface of the tank main body, the occurrence of a gap between the inner surface of the tank main body and the outer surface of the heat insulating material is prevented in a preliminary manner, and the anti-dew performance is improved. Is improved.

According to a third aspect of the present invention, there is provided a flush water tank for a flush toilet according to the second aspect, wherein the damming ridge is formed in a sharp shape, and the leading edge thereof is formed of a heat insulating material. It is characterized by being locked to the outer surface.

Therefore, in this case, in particular, since the leading edge of the sharply formed damming ridge is locked to the outer surface of the heat insulating material, the fitted substantially heat-insulating material is prevented from shifting. The close contact between the outer surface of the heat insulating material and substantially the entire inner surface of the tank body is maintained, and the dew-proof performance is further improved.

According to a fourth aspect of the present invention, there is provided a flush water tank for a flush toilet according to the third aspect, wherein a heat insulating material is closely fixed to an inner surface of the tank body near the damming ridge. It is characterized by the following.

Therefore, in this case, especially, since the heat insulating material is closely fixed to the inner surface of the tank body near the damming ridge, the leading edge of the damping ridge is sufficiently firmly engaged with the outer surface of the heat insulating material and fitted. The displacement of the substantially container-shaped heat insulating material is reliably prevented, and the closed state at the locking portion is also ensured.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS.
4 shows an embodiment corresponding to all of the embodiments. In the flush water tank for flush toilet of this embodiment, a heat insulating material 4 is provided along substantially the entire inner surface of a tank body 3 having a drain port 2 formed in a bottom portion 1. A damming ridge 5 surrounding the drain port 2 is provided on the inner surface of the bottom 1 of the tank body 3 so as to close a gap between a leading edge of the damping ridge 5 and an outer surface of the heat insulating material 4.

In the flush water tank for the flush toilet of this embodiment, the heat insulating material 4 is formed in a substantially container shape and fitted into the tank main body 3, and the heat insulating material 4 is applied to substantially the entire inner surface of the tank main body 3. Is located close to. Further, the damming ridges 5 are formed in a sharpened shape, the leading edge of which is locked to the outer surface of the heat insulating material 4, and the heat insulating material 4 is closely fixed to the inner surface of the tank body 3 near the damming ridges 5. I have.

The tank body 3 is integrally formed in a substantially container shape opened upward with pottery or synthetic resin, and has a bottom portion 1 and a peripheral wall portion 6. A drain port 2 located at the center of the bottom portion 1 has an inner surface. Are projected in an elliptical shape. A lid 7 is detachably attached to the upper opening portion of the tank body 3, but a hand-washing bowl may be attached in place of the lid 7. Also, the tank body 3
Is installed on the rear end of the toilet 8 and fixed by bolts 9. Wash water stored in the tank body 3 is sent into the toilet 8, and the inside of the toilet 8 is washed with running water. Things.

In this case, a drainage device 10 having a Douglas valve is attached to the drain port 2 of the tank body 3, and the operation lever 11 attached to one side wall of the peripheral wall 6 of the tank body 3 is rotated. By the operation, the flap valve 12 of the Douglas valve is opened, and the washing water is sent into the toilet 8 through the drainage device 10. When the washing water in the tank body 3 is reduced due to the water being supplied, the flap valve 12 is closed by its own weight and automatically shut off, and new washing water is supplied to the inside of the tank body 3. Fixed amount is stored.

At this time, washing water is supplied into the tank main body 3 from a ball tap 13 attached to the other side wall of the peripheral wall portion 6 of the tank main body 3, and the tank tap 3 automatically acts on the inside of the tank main body 3 by the action of the ball tap 13. A predetermined amount of washing water is supplied from the water supply pipe 14 and stored. An overflow pipe 15 is provided on the Douglas valve of the drainage device 10 in the form of a branch pipe. When a predetermined amount or more of washing water is supplied into the tank body 3, the overflow pipe 15 is drained from the overflow pipe 15. Ingredient
The water is drained into the toilet 8 through 10.

The heat insulating material 4 is made of styrofoam or other synthetic resin foam and is integrally molded in a substantially container shape and fitted into the tank body 3. The bottom of the heat insulating material 4 is connected to the drain port 2 of the tank body 3. A cutout opening 16 is formed at a corresponding position. As described above, the tank main body 3 is fixed to the toilet 8 with the bolts 9 or the drainage tool 10 is attached to the drainage port 2 in the cutout opening 16. In addition, the washing water is stored inside the heat insulating material 4 having a substantially container shape,
And water is supplied into the toilet 8.

Further, the heat insulating material 4 is closely fixed to the inner surface of the tank body 3 in the vicinity of the inside of the damming ridge 5, and in this case, as shown in FIG. As shown in FIGS. 1 and 2, pins integrally projecting from the inner surface of the bottom portion 1 of the tank body 3 are formed in mounting holes 17 formed at four locations around the tank.
The bottom portion of the heat insulating material 4 is pressed against the bottom portion 1 of the tank body 3 by an attachment 19 which is engaged with the pin 18 and is tightly fixed. As shown in FIG. 4B, the attachment 19 has a circular hole 20 formed in the middle of the rectangular metal plate.
Two slits 21 are formed side by side on both sides in the longitudinal direction of the rectangular metal plate from the peripheral edge of the rectangular metal plate, and a portion between the pair of slits 21 is formed as a movable locking piece 22.

As shown in FIG. 4 (a), the attachment 19 has a circular hole 20 fitted in an upper end portion of a pin 18 which is inserted into the attachment hole 17 and protrudes upward from the heat insulating material 4. When the attachment 19 is brought into contact with the upper surface of the bottom portion of the heat insulating material 4, the movable locking piece 22 is bent upward while the leading edge of the movable locking piece 22 is bent.
And is engaged with the outer peripheral surface of the heat insulating material 4 to press the upper surface of the bottom portion of the heat insulating material 4. At this time, in the vicinity of the tightly fixed portion by the attachment 19, the tip edge of the sharp damming ridge 5 bites into the outer surface of the heat insulating material 4 and is strongly locked.

As shown in FIG. 3, a stopper 23 having a concave upper edge is integrally provided at the middle of the upper end of the opposed side wall of the substantially heat insulating material 4. As shown in FIG.
As shown in (1), the operation lever 11 and the mounting base 24 of the ball tap 13 attached to the opposing side walls of the peripheral wall 6 of the tank body 3 are engaged and stopped. As a result, the substantially container-shaped heat insulating material 4 is securely and easily held and fixed so as not to float or rattle in the tank body 3.

Therefore, in the flush water tank for a flush toilet according to this embodiment, since the heat insulating material 4 is provided along substantially the entire inner surface of the tank main body 3, the heat insulating material 4 in the tank main body 3 is provided.
Even when the washing water stored inside is cold and the surrounding outside air is warm and the temperature difference between the two is large, heat transfer between the washing water and the tank body 3 is blocked by the heat insulating material 4, and the tank body 3 The occurrence of condensation on the outer surface is prevented.

In addition, a damming ridge 5 surrounding the drain port 2 is projected from the inner surface of the bottom portion 1 of the tank body 3, and the gap between the leading edge of the damping ridge 5 and the outer surface of the heat insulating material 4 is closed. Therefore, even if cleaning water enters the gap between the inner surface of the tank body 3 and the outer surface of the heat insulating material 4, the cleaning water is blocked by the damming ridges 5 and flows to the drain port 2. Without being accumulated in the gap.

Then, even if the washing water stored inside the heat insulating material 4 is replaced with a new one that is cold each time the toilet 8 is used, the cleaning water accumulated in the gap that has been left as it is is replaced with the same heat. Is heated by the heat transfer through the tank body 3 until it becomes substantially equal to the surrounding outside air over time, and the temperature difference between the surrounding outside air and the washing water accumulated in the gap disappears. The occurrence of dew condensation on the outer surface of the tank body 3 is prevented.

As described above, even when the cleaning water enters the gap between the inner surface of the tank body 3 and the outer surface of the heat insulating material 4, the dew-proofing performance is exhibited without any trouble. It becomes reliable, and the work of filling the sealing material becomes unnecessary, and the same anti-dew performance can be obtained with a simple work.

In the flush water tank for a flush toilet according to the embodiment, the heat insulating material 4 formed in a substantially container shape is fitted into the tank main body 3, so that the heat insulating material 4 is attached to the tank main body 3.
It is easily installed along the entire inner surface of the. And at that time,
Since the outer surface of the heat insulating material 4 is in close contact with substantially the entire inner surface of the tank body 3, the occurrence of a gap between the inner surface of the tank body 3 and the outer surface of the heat insulating material 4 is preliminarily prevented, and the dew-proofing performance is improved. Is getting higher.

Further, since the leading edge of the sharply formed damming ridge 5 is locked to the outer surface of the heat insulating material 4,
The shifted movement of the fitted substantially heat-insulating material 4 is prevented,
The close contact between the outer surface of the heat insulating material 4 and substantially the entire inner surface of the tank body 3 is maintained, and the dew-proof performance is further enhanced. In addition, since the heat insulating material 4 is closely fixed to the inner surface of the tank body 3 in the vicinity of the damming ridge 5, the leading edge of the damping ridge 5 is sufficiently firmly locked and fitted to the outer surface of the heat insulating material 4. The displacement of the substantially heat insulating material 4 is reliably prevented, and the closed state at the locking portion is also ensured.

FIG. 5 also shows another embodiment corresponding to all of claims 1 to 4 of the present invention. In the flush water tank for flush toilet of this embodiment, a bolt 9 for fixing the tank body 3 to the toilet 8 is used. The heat insulating material 4 is tightly fixed to the inner surface of the tank body 3 by the fixture 25 held by the bolt 9. In this case, although not shown, the leading edge of the damming ridge 5 is locked to the outer surface of the heat insulating material 4 near the outside of the closely fixed portion by the bolt 9. The fixing tool 25 is formed in a substantially inverted hat shape in cross section, and the concave part 26 is held between the head 27 of the bolt 9 and the washer 28 fitted to the bolt 9. ing.

Accordingly, the bolt 9 is inserted into the through hole 29 formed in the bottom 1 of the tank body 3 and screwed and fixed to the toilet bowl 8, and at this time, the bolt 9 is fitted under the washer 28. An inner edge portion of the through hole 29 is sealed by the packing material 30, and when the concave part 26 in the middle of the fixing tool 25 is accommodated in an opening space 31 formed in the heat insulating material 4, the peripheral edge of the fixing tool 25 A peripheral edge of the opening space 31 of the heat insulating material 4 is sandwiched and fixed between the flange 32 and the bottom 1 of the tank body 3. The rest of the configuration is the same as that of the above-described embodiment, and the same operation and effect as in the above-described embodiment are exerted in the flush water tank for flush toilets of this embodiment.

FIG. 6 shows still another embodiment corresponding to all of the first to fourth aspects of the present invention. In the flush water tank for flush toilet of this embodiment, a drainage tool attached to the drain port 2 is provided.
The heat insulating material 4 is tightly fixed to the inner surface of the tank main body 3 by utilizing 10. In this case, although not shown, near the periphery of the drain port 2 to which the drainage tool 10 is attached, the leading edge of the damming ridge 5 is locked to the outer surface of the heat insulating material 4. In addition, drainage equipment 10
Has a flange 33 protruding from the outer periphery and the flange 33
A threaded pipe portion 34 vertically suspended downward is integrally formed,
A nut 35 to be screwed into the threaded tube portion 34 is also provided.

Therefore, when the screw pipe portion 34 is inserted into the drain port 2 and the nut 35 screwed into the screw pipe portion 34 is tightened, the tank body 3 is inserted between the nut 35 and the flange portion 33.
And the heat insulating material 4 is clamped. At this time, the inclined packing 36 fitted under the flange portion 33 of the threaded pipe portion 34
Is pressed into contact with the inclined inner peripheral surface of the circular opening 37 formed at the bottom of the tank, and the inner edge of the circular opening 37 is sealed. A peripheral edge portion of the circular opening 37 of the heat insulating material 4 is pinched and fixed.
In addition, other than that, it is comprised similarly to the said embodiment, In the flush water tank for flush toilets of this embodiment,
The same operation and effect as in the above embodiment can be obtained.

[0037]

As described above, in the flush water tank for flush toilets according to the first aspect of the present invention, it is not only possible to prevent the occurrence of dew condensation on the outer surface of the tank body by the heat insulating material, but also to prevent the tank body from being condensed. Even if the washing water enters the gap between the heat insulating material, the washing water is blocked by the damming ridges and is accumulated in the gap to warm up, preventing the occurrence of dew condensation and ensuring the anti-dew performance, The operation of filling the sealing material is unnecessary, and the same dew-proof performance can be obtained with a simple operation.

Further, in the flush water tank for flush toilets according to the second aspect of the present invention, in particular, the heat insulating material can be easily provided by being fitted into the tank body, and moreover, substantially the entire inner surface of the tank body can be provided. In addition, the outer surface of the heat insulating material is closely contacted, and the occurrence of a gap between the two is preliminarily prevented, so that the dew-proof performance is improved.

Further, in the flush water tank for flush toilet according to the third aspect of the present invention, in particular, the tip edge of the sharp damming ridge is locked on the outer surface of the heat insulating material, and the heat insulating material fitted therein is used. The displacement is prevented, and the close contact between the outer surface of the heat insulating material and substantially the entire inner surface of the tank body is maintained, so that the dew-proof performance is further improved.

Further, in the flush water tank for flush toilet according to the fourth aspect of the present invention, particularly, the heat insulating material is closely fixed to the inner surface of the tank body in the vicinity of the damming ridge, and the leading edge of the damming ridge is formed. Is firmly locked to the outer surface of the heat insulating material, and the slippage of the inserted heat insulating material is reliably prevented,
The closed state at the locking portion is also ensured.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing a construction state of a flush water tank for a flush toilet according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the flush water tank for the flush toilet.

FIG. 3 is a perspective view showing a heat insulating material in the flush water tank for flush toilet.

FIG. 4 (a) is a longitudinal sectional view of a main part showing a fixing structure of a heat insulating material in the flush water tank for a flush toilet, and FIG. 4 (b) is a plan view showing a fixing fitting used in the fixing structure.

FIG. 5 is a vertical cross-sectional view of a main part showing a fixing structure of a heat insulating material in a flush water tank for flush toilet according to another embodiment.

FIG. 6 is a longitudinal sectional view of a main part showing a fixing structure of a heat insulating material in a flush water tank for flush toilet according to still another embodiment.

FIG. 7 is a schematic longitudinal sectional view showing a construction state of a conventional flush water tank for flush toilets.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom part 2 Drain port 3 Tank main body 4 Insulation material 5 Damping ridge

Claims (4)

[Claims] An insulating material is provided along substantially the entire inner surface of a tank body having a drain port formed on a bottom portion thereof, and a damming ridge surrounding the drain port is formed on an inner surface of the bottom portion of the tank body so as to project therefrom. A flush water tank for flush toilets, wherein a gap between a leading edge of a strip and an outer surface of the heat insulating material is closed. 2. The heat insulating material is formed in a substantially container shape and fitted into the tank main body, and the heat insulating material is provided along substantially the entire inner surface of the tank main body such that the outer surface thereof is in close contact with the tank main body. A flush water tank for flush toilets as described. 3. The flush water tank for a flush toilet according to claim 2, wherein the damming ridge is formed in a sharpened shape, and a leading edge thereof is locked to an outer surface of the heat insulating material. 4. The flush water tank for a flush toilet according to claim 3, wherein a heat insulating material is closely fixed to an inner surface of the tank body near the damming ridge.