JP5928978B2 - Toilet flush water tank - Google Patents

Description

  The present invention relates to a toilet flushing water tank used together with a flush toilet.

  Conventionally, toilet flushing water tanks have a double structure with two tanks: an exterior tank made of ceramics and an interior tank arranged inside, and the user can wash their hands after excretion at the top of the exterior tank. A hand-washing water discharge pipe and a hand-washing bowl are provided.

  In the conventional toilet flushing water tank, a dew condensation prevention cover is detachably fixed above the interior tank in order to prevent the occurrence of condensation between the interior tank and the exterior tank. In addition, an opening is formed in the dew condensation prevention cover, and the washing water drained from the drain port of the hand-washing basin is configured to guide the interior of the interior tank through the opening. (See Patent Document 1)

As a recent usage of the toilet flushing water tank, there are many cases where a commercially available medicine is placed on the drain of the hand-washing bowl in order to prevent filth from adhering to the bowl surface of the flush toilet. Yes.
In such a use form, the medicine dissolves in the washing water discharged from the water outlet of the hand-washing water discharge pipe, and the washing water in which the medicine is dissolved (hereinafter referred to as “the washing water containing the medicine”) is stored in the interior tank. It will be. At this time, when the washing water containing the medicine is drained from the drain of the hand-washing bowl into the interior tank through the opening of the condensation prevention cover, a part of the washing water containing the medicine hits the opening of the condensation prevention cover. Sometimes. The cleaning water containing the medicine hitting the opening of the dew condensation prevention cover moves to the surroundings along the inner surface (back surface) of the dew condensation prevention cover, and drops when it becomes a droplet of a certain size. At this time, if the dropped water droplets adhere to the water supply device arranged in the interior tank, depending on the water supply device, there is a problem that some parts are made of resin weak to chemicals, which causes deterioration or damage. .

JP 2010-236276 A

  The present invention has been made in view of the above-described conventional problems, and a part of the cleaning water discharged from the water outlet of the hand-washing water discharge pipe is transmitted along the inner surface (back surface) of the dew condensation prevention cover. It is an object of the present invention to provide a toilet flushing water tank that can prevent water drops from adhering to a water supply device by moving or dropping to the side, thereby deteriorating or damaging the water supply device.

In order to solve the above problems, the present invention employs the following means. That is, the toilet flushing water tank of the present invention includes an exterior tank, an outer lid that is detachably fixed above the exterior tank, and is mounted in the exterior tank and includes at least a part of water supply means inside. and interior tank for water storage of washing water feed water from the means, and an inner lid which is detachably fixed above the inner instrumentation tank and spouting flush water for located the upward spout of the outer lid handwashing handwashing A drainage port for draining the wash water received in the handwashing bowl into the interior tank, and a drainage port on the inner lid. An opening for guiding the wash water discharged from the interior tank is formed, and the water supply means includes a water supply pipe connected to an external water supply source and an interior of the wash water supplied from the water supply pipe Switching between water discharge and water stop into the tank The water supply body with a water supply valve, a float that moves up and down as the water level changes in the interior tank, and one end is attached to the float, and the water discharge and water stop of the water supply valve are linked to the vertical movement of the float And a water drop dripping prevention means for preventing water droplets from dripping from the inner surface of the inner lid to the water supply body of the water supply means, and the water drop dripping prevention means is a portion directly above the water supply section main body. It is a rib provided between the opening and protruding downward on the inner surface of the inner lid .
In the present invention configured as described above, the water droplet dripping preventing means is a rib projecting downward on the inner surface of the inner lid, and this rib is located between the portion directly above the water supply body and the opening. Even if the wash water drained from the drain of the hand-washing basin moves from the opening of the inner lid to the water supply body side through the inner surface of the inner lid, it is dropped into the interior tank by this rib. Therefore, dripping to the water supply body can be prevented. Accordingly, it is possible to prevent water stop failure of the water supply means.

  According to the toilet bowl cleaning water tank of the present invention, it is possible to prevent cleaning water from hand-washing water from adhering to the water supply body of the water supply means, and to prevent deterioration and damage of the water supply body.

It is sectional drawing of the flush toilet provided with the toilet bowl washing water tank which is embodiment of this invention. It is front sectional drawing which shows the inside of the toilet bowl washing water tank which is embodiment of this invention. FIG. 3 is a plan view of the inner lid shown in FIG. 2. It is AA sectional drawing of the inner cover shown in FIG.

Hereinafter, a toilet flushing water tank according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, FIG. 1 is a sectional view of a flush toilet equipped with a toilet flush water tank according to the present embodiment.
As shown in FIG. 1, reference numeral 1 denotes a flush toilet. A bowl portion 2 is formed on the front side of the upper portion of the flush toilet 1, a water conduit 3 is formed on the rear upper portion, and a lower side of the water conduit 3. Are formed with drain trap pipes 8 communicating with the bowl portion 2.

An overhang-shaped rim 6 is formed on the upper edge of the bowl portion 2 of the flush toilet 1, and one or two rim spouts 4 to which washing water is supplied from the water conduit 3 are formed on the rim 6. The washing water descends while swirling so that the bowl part 2 can be washed. In addition, bowl part 2
A jet spout 10 to which wash water is supplied from the water conduit 3 is formed at the lower center of the water, and the wash water is spouted from the jet spout 10 toward the drain trap pipe 8 to generate a siphon in a short time. It has come to be.

Above the water conduit 3 of the flush toilet 1, a so-called row tank 11 corresponding to the toilet flushing water tank of the present embodiment for collecting flush water for washing the flush toilet 1 is provided. A communication port 12 b communicating with the water conduit 3 of the flush toilet 1 is formed on the bottom surface 12 a of the low tank 11.

Next, with reference to FIGS. 2-4, the detail of the toilet bowl washing water tank (low tank) of this embodiment is demonstrated. Here, FIG. 2 is a front sectional view showing the inside of the toilet flushing water tank (low tank) of the present embodiment.
As shown in FIG. 2, the row tank 11 includes an exterior tank 12 made of earthenware that forms an outer frame of the row tank 11, and an earthenware that is detachably fixed on the exterior tank 12 and that forms a hand-washing bowl 16 a on the upper surface thereof. And an outer lid 16 made up of.

  The exterior tank 12 includes an interior tank 20 made of resin in which cleaning water is stored. The interior tank 20 includes a drain valve 22, an overflow pipe 26, a water supply pipe 40, a ball tap 32, and a float 34. Is provided. Further, an inner lid (condensation prevention cover) 18, which will be described in detail later, is disposed on the upper surface of the interior tank 20.

First, the drain valve 22 includes a large cleaning valve element 22 b and a small cleaning valve element 22 a, and both valve elements 22 a and 22 b are provided in the communication port 12 b portion of the bottom surface 12 a of the low tank 11.
Further, the valve bodies 22a and 22b are respectively connected to the ball chains 24a and 24b connected to the operation lever 30, and by operating the operation lever 30 to switch between large washing and small washing, The opening / closing operation of the valve body 22b or the small cleaning valve body 22a is performed. The drain valve 22 stores the wash water in the interior tank 20 of the exterior tank 12 by the closing operation, and passes the wash water in the interior tank 20 of the exterior tank 12 through the water conduit 3 of the flush toilet 1 by the opening operation. Then, it is guided to the rim water spouting port 4 and the jet water spouting port 10.

  Next, the overflow pipe 26 is provided such that an opening is formed at its upper end and its lower end communicates with the valve seat 21 of the drain valve 22. Even if the water level of the washing water rises by this overflow pipe 26, the washing water overflows from the opening, and further passes through the valve seat 21 of the drain valve 22 and further through the water conduit 3 of the flush toilet 1. Then, the rim water spouting port 4 and the jet water spouting port 10 are discharged into the bowl portion 2.

Next, the water supply pipe 40 is attached to the bottom surface 12 a of the low tank 11, connected to a water supply source (not shown) such as an external water supply, and supplied to the interior tank 20 of the exterior tank 12.
A ball tap 32 is provided at the tip of the water supply pipe 40 as water supply means for supplying cleaning water into the interior tank 20 of the exterior tank 12. An arm 36 is attached to the ball tap 32, and a float 34 is attached to the right end of the arm 36. The water supply main body 38 of the ball tap 32 is provided with a water supply valve (not shown), and the float 34 moves up and down as the cleaning water level in the interior tank 20 fluctuates, thereby supplying water in the water supply main body 38. A valve (not shown) opens and closes, and the water discharge and the water stoppage from the water supply pipe 40 to the interior tank 20 can be switched. The water supply unit main body 38, the arm 36, and the float 34 are all made of resin.

Next, the details of the inner lid (condensation prevention cover) 18 will be described with reference to FIGS. Here, FIG. 3 is a plan view of the inner lid (condensation prevention cover) 18 according to the present embodiment shown in FIG. 4 is a cross-sectional view of the inner lid (condensation prevention cover) 18 of FIG.
As shown in FIGS. 2 to 4, in the inner lid (condensation prevention cover) 18, condensation attached to the inner surface or the like of the outer lid 16 positioned above the inner lid 20 falls, and the drain valve 22 inside the interior tank 20. In addition, the internal devices and internal members such as the overflow pipe 26, the water supply pipe 40, the ball tap 32, and the float 34 are prevented from getting wet. In addition, an opening 18b is formed in the inner lid (condensation prevention cover) 18 at a position facing the drain 16b of the hand-washing basin 16a, and the wash water drained from the drain 16b of the hand-washing basin 16a is supplied to the interior tank 20. It is designed to conduct water inside.

  Further, the upper surface of the inner lid (condensation prevention cover) 18 is formed with a first inclined portion 18c, a second inclined portion 18d, and a third inclined portion 18e from the side closer to the opening 18b. Water drops that have fallen from the inner surface of 16 to the upper surface of the inner lid (condensation prevention cover) 18 are guided to the opening 18b.

In the ball tap 32 which is a water supply means for supplying cleaning water into the interior tank 20, a water guide pipe (not shown) for guiding water supply to the hand-washing water discharge pipe 14 fixed above the hand-washing bowl 16 a is provided in the interior tank 20. It is provided separately from a water supply pipe (not shown) for supplying water.
When the user operates the operation lever 30 and the wash water in the interior tank 20 is drained into the bowl portion 2 of the flush toilet 1, the water is fed into the interior tank 20 through the water pipe of the ball tap 32 accordingly. . At that time, water is supplied to the water guide pipe almost simultaneously with water supply to the water supply pipe, and water supply into the interior tank 20 and water supply to the hand-washing water discharge pipe 14 are performed almost simultaneously.

  Next, the inner surface (back surface) of the inner lid (condensation prevention cover) 18 will be described. As shown in FIGS. 2 to 4, a rib 18 a that protrudes downward is formed on the inner surface of the inner lid (condensation prevention cover) 18. The rib 18a is located between the opening 18b on the inner surface of the inner lid (condensation prevention cover) 18 immediately above the water supply body 38 of the ball tap 32 (region B in FIG. 2) and from the front to the rear. It is formed to extend. A mounting recess 18f that is recessed upward is formed at the periphery of the inner lid (condensation prevention cover) 18, and the upper end edge of the interior tank 20 is fitted into the mounting recess 18f, so that the inner lid (condensation prevention cover) is formed. 18 is difficult to be detached from the interior tank 20.

  Wash water discharged from the water discharge port 14a of the hand-washing water discharge pipe 14 is drained from the drain port 16b of the hand-washing basin 16a into the interior tank 20 through the opening 18b of the inner lid (condensation prevention cover) 18. However, at that time, a part of the drained washing water may hit the edge of the opening 18b and spread around the inner surface of the inner lid (condensation prevention cover) 18 in some cases. At this time, the water droplets moving along the inner surface of the inner lid (condensation prevention cover) 18 are combined with other water droplets to form large water droplets and drop downward. Therefore, in the present embodiment, the above-described rib 18a actively drops water droplets that move along the inner surface of the inner lid (condensation prevention cover) 18 into the interior tank 20.

  According to the toilet flushing water tank of the embodiment of the present invention described above, the rib 18a that protrudes downward is formed on the inner surface of the inner lid (condensation prevention cover) 18, and the rib 18a is formed by the ball tap 32. It is located between the portion directly above the water supply body 38 and the opening 18b. Therefore, a part of the washing water discharged from the water outlet 14 a of the hand-washing water discharge pipe 14 hits the opening 18 b of the inner lid (condensation prevention cover) 18, and travels along the inner surface of the inner lid (condensation prevention cover) 18. Even if it moves to the main body 38 side, it can be dripped in the interior tank 20 before the water supply unit main body 38 by the rib 18a, and dripping on the water supply unit main body 38 can be prevented. Therefore, even when a commercially available medicine or the like is placed on the hand-washing bowl 16a by the user, it is possible to prevent water droplets containing the medicine from dropping on the water supply body 38, and the deterioration of the water supply body due to the medicine.・ Damage can be prevented.

  Further, in the present embodiment, as described above, the opening portions such as the first inclined portion 18c, the second inclined portion 18d, and the third inclined portion 18e as the distance from the opening portion 18b of the inner lid (condensation prevention cover) 18 increases. Since the inclined portion inclined to the side is formed, it is possible to prevent water droplets moving along the inner surface of the inner lid (condensation prevention cover) 18 from going to the water supply portion main body 38 side, and more reliably. In addition, deterioration and breakage of the water supply body can be prevented.

  In addition, the rib 18a of the present embodiment is configured to be located between the portion directly above the water supply body 38 of the ball tap 32 and the opening 18b on the inner surface of the inner lid (condensation prevention cover) 18. However, the present invention is not limited to this, and the ball tap 32 may be formed between the portion directly above the float 34 and the opening 18b. In this way, it is possible to prevent water droplets from dropping on the float 34.

  Moreover, although the water supply part main body 38 of this embodiment is provided with a water supply valve (not shown) at least, you may comprise a strainer and a constant flow valve in addition to this.

For example, instead of the rib 18a of this embodiment, or as an additional member, a cover member that covers the upper side and the side of the water supply unit main body 38 may be detachably attached to the water supply unit main body 38. In this way, it is possible to more reliably prevent water droplets from dropping on the water supply unit main body 38.

1 flush toilet 2 bowl part 3 waterway 4 rim spout
6 Rim 8 Drain trap line 10 Jet spout 11 Low tank 12 Exterior tank 12a Bottom face of low tank 12b Communication port 14 Hand wash spout 14a Hand wash spout 16 Outer lid 18 Inner lid 18a Rib 18b Opening 18c First inclined part 18d First 2 inclined portion 18e 3rd inclined portion 18f mounting recess 20 interior tank 22 drain valve 24a, 24b ball chain 26 overflow pipe 30 operation lever 32 ball tap 34 float 36 arm 38 water supply body 40 water supply pipe

Claims (1)

A toilet flushing water tank for storing flush water for washing flush toilets,
An exterior tank,
An outer lid fixed detachably above the exterior tank;
An internal tank that is mounted in the exterior tank and includes at least a part of water supply means inside, and stores the wash water supplied from the water supply means;
An inner lid detachably fixed above the interior tank;
A hand-washing spout pipe for spouting wash water for hand-washing with a spout located above the outer lid;
The outside on the upper surface of the lid drainage port for draining washing water received in the hand wash basin with hand washing basin is formed into the interior tank is formed, and, in the inner lid has been drained from the drain outlet An opening for introducing washing water into the interior tank is formed,
The water supply means includes a water supply unit body with a water valve for switching the water discharge and water shut-off to the external water supply pipe connected to the water supply source and the interior tank of washing water supplied from the water supply pipe, the interior a float which moves up and down with the change of the water level in the tank, one end attached to the float, and a arm switching the water discharge and water shut-off of the water supply valve in conjunction with the vertical movement of the float,
Comprising water droplet drip prevention means for preventing water droplets from dripping from the inner surface of the inner lid to the water supply body of the water supply means ;
The toilet scouring water tank is characterized in that the water droplet dripping prevention means is a rib that is provided between a portion directly above the water supply unit main body and the opening and protrudes downward on the inner surface of the inner lid. .