JP2019060210A - Flush toilet bowl - Google Patents

Abstract

To provide a flush toilet bowl with improved water saving performance and capable of preventing adhesion of dirt to the upper edge of a rim part thereby reducing the number of times of cleaning, while having high designability and cleaning friendliness of the rim part even when the rim part does not have an overhang.SOLUTION: There is provided a flush toilet bowl with which flushing water supply means supplies flushing water to clean a bowl part and discharge sewerage with the flushing water comprising: a bowl part having a bowl-shaped sewerage receiving face and a rim part erected in a substantially vertical direction on the inside upper end thereof; a water reservation part and a drain pipe connection port provided on the lower part of the bowl part; and a rim water discharge part discharging the flushing water along the inner peripheral surface of the rim part. A rim water discharge port which constitutes the rim discharge part is configured to discharge less amount of the flushing water to the upper part of the rim part per unit time than to the lower part thereof.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a flush toilet, and more particularly to a flush toilet that supplies flush water to a rim formed at the upper end periphery of a bowl and flushs the rim and the bowl by flushing the flush water. .

A flush toilet bowl is conventionally known which supplies flush water to the inner peripheral surface of a rim portion formed at the upper end periphery of the toilet bowl and flushes the bowl portion when the flush water is swirled in the flush toilet bowl. (For example, refer to patent document 1)
In the flush toilet described in this patent document 1, the flush water supplied from the tank passes through the rim water channel, and the rim spout from the rim spout provided on one side of the rim formed on the rim of the upper end of the bowl Spouting flush water towards the And rim washing water spouted from this rim spout spouts a rim part, being controlled by falling on the upper surface of a shelf provided in a bowl part, and a part of washing water is a bowl part sequentially from this shelf The bowl portion is washed while being swirled by falling into the bowl.
Moreover, in this patent document 1, it is comprised as a rim part in which the overhang which is covered over a shelf part is not formed. In this way, we are aiming for a clean, high design and easy cleaning of the rim.

JP, 2005-98005, A

However, in recent flush toilets, the demand for water conservation has increased, and there has been a problem that the rim portion having no overhang as in Patent Document 1 has severe measures against water conservation. Specifically, if the flow velocity of the wash water supplied to the rim is increased because there is no overhang, the wash water will come out of the rim due to the action of the centrifugal force, so by all means wash water to the rim There is a limit in increasing the spouting flow rate, and the toilet bowl cleaning power is reduced by suppressing the flow rate of the washing water to a low level. It was difficult to deal with it.
In addition, in the rim without overhang, if it is attacked so that the washing water flows to the upper inner edge of the upper part of the rim, the risk of the washing water coming out of the rim due to some factor change such as pressure fluctuation Because of the increase, the upper edge of the rim can not be attacked, and there is a problem that the dirt on the upper edge of the rim remains. Therefore, in the rim portion with overhangs, although cleaning of the rim portion can be facilitated, dirt remains on the upper edge portion of the rim portion, so the number of times of cleaning is reversed. There was a problem that it increased more than the toilet bowl.

  Therefore, the present invention has been made to solve the problems of the prior art, and it is possible to maintain the advantages of high design and easy cleaning of the rim portion even with the rim portion having no overhang. The present invention provides an excellent flush toilet bowl which can realize high water conservation which was a problem in this type of toilet bowl, and can also prevent the adhesion of dirt on the rim of the rim and also reduce the number of times of cleaning of the rim. The purpose is

  In order to achieve the above object, the present invention provides a bowl-shaped filth receiving surface in a flush toilet in which flush water is supplied from flush water supply means to a toilet bowl and the bowl portion of the toilet bowl is cleaned to discharge dirt. And a bowl portion having a rim portion erected in a substantially vertical direction at an inner upper end portion, a reservoir portion provided at a lower portion of the bowl portion, a drainage pipe connection port, and an inner circumferential surface of the rim portion A rim spouting portion for spouting flush water along the rim, and the rim spout port constituting the rim spout portion has a discharge flow rate per unit time of flush water to the upper portion of the rim portion is lower than the rim portion; It is characterized in that it is configured to be less than the discharge flow rate per unit time of the washing water.

In the present invention configured as described above, even if the rim portion is configured without overhanging, the flow rate of the cleaning water swirling on the upper side of the rim portion is suppressed to a low level, and the centrifugal force accompanying the swirl acts. Even in such a case, the risk of washing water splashing out from the rim portion can be reduced, so that the washing water discharge speed from the rim spout can be increased, and high washing power can be secured. This makes it possible to secure high water saving performance.
Also, the upper part of the rim has less dirt due to spattering of urine than the inside of the bowl or the lower part of the rim, and the dirt strength is low, so the flow rate can be lowered and just a slight increase in the flow rate. The performance has been maintained. As described above, securing of high washability, which is a problem in the overhang-less rim portion, can be realized with a simple configuration.
Furthermore, in the present invention, by changing the flow rate ratio in the vertical direction of the rim portion and increasing the lower side, the washing water on the lower side has a large mass and tends to fall into the bowl. In the present invention, this falling force is actively used to lower the upper side washing water. This reliably prevents the wash water from popping out due to the increased discharge flow rate. In addition to preventing the wash water from coming out of the rim portion, the wash water can be made to reach the rim upper edge. Specifically, the influence of the centrifugal force was reduced by setting the flow rate to a small value. Furthermore, the falling force to the bowl side of the lower side washing water having a large flow rate is applied to the upper side washing water as a lowering force against the centrifugal force. This prevents the washing water at the top of the rim from jumping out of the rim, and even if the washing water reaches the rim of the rim, this force pulls the washing water back to the rim, so that the rim upper rim It has become possible to easily reach the wash water. In the rim portion where the overhang is not set, it is possible to reliably prevent the cleaning failure of the upper rim of the rim portion, which was a problem, and it is possible to extremely reduce the number of cleanings.

  Furthermore, according to the present invention, the rim spouting portion is configured to supply wash water to the rim portion from a single spout, and the upper portion of the rim spout to form a thin film water film on the upper side of the rim portion. The length of the spout in the vertical direction is longer than the length in the width direction, and the length in the width direction is substantially uniform in the vertical direction, and the lower spout that supplies washing water to the lower portion of the rim portion Is characterized in that the discharge flow rate per unit time of washing water from the upper spout to the lower side of the rim portion is increased.

  In the present invention configured as described above, it has become possible to reliably thin the wash water spouted above the rim portion. This not only makes it possible to reduce the influence of centrifugal force by reducing the mass, but also to ensure the influence of the pull-down force against the centrifugal force generated by the washing water at the lower part of the rim falling to the lower part of the bowl. Even if the flush water from the rim and the flush water reach the upper rim of the rim can be reliably prevented from affecting the flush of the flush water, it is also possible to exhibit high cleansing power by improving the water discharge speed. It is

  Furthermore, the present invention is characterized in that the rim spout, which includes the upper spout and the lower spout, is formed in an L shape in a front view.

  In the present invention thus configured, the flow rate of water discharged to the upper portion of the rim portion is suppressed to increase the flow rate of the lower portion by a simple configuration in which the rim water discharge port constituting the rim water discharge portion is simply L-shaped. Not only that, it is possible at the same time to form water discharge to the upper part of the rim portion as a thin film water film.

  Furthermore, in the present invention, when the washing water having a large flow rate on the lower side of the rim portion falls to the lower side of the bowl portion, the movement to the washing water side consisting of the thin film water film on the upper side of the rim portion is The shelf portion is formed so as to oppose the centrifugal force acting on the thin film water film and the force of the cleaning water having a large flow rate in the lower portion of the rim portion falling to the lower side of the bowl portion. .

  In the present invention configured as described above, the washing water discharged to the upper side of the rim is not only made thinner so as not to protrude from the rim, but the flow rate at the lower part is increased, and the washing water in the lower part is bowled. By causing the washing water on the upper part of the rim to act to lower the lower part of the rim by making it fall well, it was possible to allow the washing water to come out of the rim and to reach the upper rim of the rim. Further, in the present invention, the drop control of the lower portion of the rim portion to the bowl portion is constituted by the shelf portion, so that the intended operation can be realized with a simple configuration. In particular, there are various means such as the shape of the bowl portion and the frictional force and inclination of the shelf portion to realize this function, but since the flush toilet is generally pottery, this subtle shape is accurately realized It was very difficult. In the present invention, by realizing it with the width of the shelf, it is possible to provide a flush toilet bowl capable of reliably providing a targeted action even in the case of a ceramic with loose dimensional accuracy, and the production yield can be increased. It can exhibit excellent effects in practical use.

  Furthermore, in the present invention, the shelf is configured such that the horizontal shelf width becomes smaller at a position farther from the vicinity of the rim spout, and the width of the horizontal shelf becomes zero at a further distant position. It is characterized in that it is configured as follows.

  With such a simple configuration of forming the shelf, a force against centrifugal force can be reliably exerted on the thin film water film so that the upper edge of the rim can be reliably cleaned, and from the rim It is also possible to prevent popping out of the washing water.

  According to the flush toilet bowl of the present invention, even with the rim portion having no overhang, this type of toilet bowl has been a problem while maintaining the advantages of high designability and easy cleaning of the rim portion. It is possible to realize a high water-saving property, and also to prevent the adhesion of dirt on the rim of the rim portion, thereby achieving a practically excellent effect of being able to reduce the number of times of cleaning of the rim portion.

It is a top view showing a flush toilet according to an embodiment of the present invention. It is sectional drawing seen along the II-II line of FIG. It is sectional drawing (water storage tank is abbreviate | omitted) seen along the III-III line of FIG. It is a fragmentary sectional view seen along the IV-IV line of FIG. FIG. 10 is an image view showing a change in shape of washing water spouted from the first spout 18;

  Hereinafter, a flush toilet according to an embodiment of the present invention will be described with reference to the attached drawings. First, the basic structure of a flush toilet according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. Here, FIG. 1 is a plan view showing a flush toilet according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. It is a cross-sectional view (water storage tank is omitted) viewed along the line III-III, and FIG. 4 is a partial cross-sectional view viewed along the line IV-IV in FIG.

  As shown in FIGS. 1 to 4, the flush toilet 1 according to the present embodiment is made of pottery having a glaze layer formed on the surface, a skirt portion 2 is formed on the lower portion, and a bowl on the front of the upper half portion. The part 4 is formed, the water conduit 6 at the upper rear, and the drainage channel 8 for discharging the waste by the siphon action at the lower rear, respectively. Further, a water storage tank 10 communicating with the water conduit 6 is provided at the rear upper portion of the flush toilet 1. Further, a drainage valve 11 is provided in the water storage tank 10, and is opened and closed by an operation lever (not shown). The present invention is also applicable to a flush toilet of the type provided with a flush valve, for example, using a pressure of tap water, in addition to a flush toilet equipped with a water storage tank.

  The bowl portion 4 includes a bowl-shaped dirt receiving surface 12, a rim portion 14 constituting an upper edge portion, and a shelf portion 16 formed between the dirt receiving surface 12 and the rim portion 14. Here, the inner side surface 14a of the rim portion 14 is formed by a flat surface (smooth flat surface) extending substantially perpendicularly from the shelf portion 16 so that there is no part that becomes blind when viewed from above. It is configured as a so-called overhang-less rim portion 14, and thereby provides effects such as a high designability that is refreshing, a good wiping performance, and a difficulty in attaching dirt.

  The inlet 8a of the drainage channel 8 opens at the center of the dirt receiving surface 5 of the bowl portion 4 below the water surface of the stored water, and the ascending channel 8b extends rearward from the inlet 8a, and the descending channel 8b descends A passage (longitudinal pipe) 8c is continuous, and a lower end of the descending passage 8c is connected to a discharge pipe (not shown) via a joint (not shown).

  In addition, on the left rear side viewed from the front of the bowl portion 4 of the flush toilet bowl 1, the first spout 18 for spouting flush water onto the shelf portion 16 and the right side viewed from the front of the bowl portion 4. On the rear side, a second spout 20 for spouting washing water is formed on the shelf portion 16, and the first spout 18 and the second spout 20 have a swirl flow in the same direction (plan view Counterclockwise) to form.

  Furthermore, the bowl portion 4 of the flush toilet 1 has a slit-shaped side on the left side (bowl portion side surface) as viewed from the front and below the shelf portion 16 above the position of the reservoir surface of the bowl portion 4 A jet hole 22 is formed. The flush water spouted from the side jet holes 22 flows toward the inlet 8 a of the drain 8 to efficiently push the waste into the drain 8.

  The water conduit 6 supplies washing water to the three water passages, ie, the first water passage 24 for supplying washing water to the first water outlet 18, and the second water discharging hole 20, toward the front of the toilet bowl. A second water passage 26 is branched into a third water passage 28 for supplying washing water to the side jet holes 22. In the case where the side-jet holes are formed, effective cleaning is possible, but the cleaning water is spouted from the first spout 18 and the second spout 20 only onto the shelf portion 16, and this side is formed. It is possible not to provide a jet hole.

Next, the detailed structure of the first water discharge port 18 of the flush toilet 1 according to the present embodiment will be described with reference to FIG. 5 in addition to FIGS. 1 to 4. The first water discharge port 18 is a portion that is the most characteristic feature of the present invention, and the shape of the first water discharge port 18 is formed in a substantially L shape. Further, the first water discharge port 18 includes an upper water discharge port 18a extended in the vertical direction along the rim portion 14 and a lower water discharge port 18b extended laterally along the shelf portion 16; The upper spout 18 a and the lower spout 18 b constitute one first spout 18. In the present embodiment, the first spout 18 is formed by forming an opening in the pottery constituting the rim portion 14, but the position and shape of the upper spout 18a, and the dimensional accuracy in the width direction Since it is important in the sense that the thin film water film along the rim portion 14 is surely formed, the first spout 18 is formed by a resin component in such a manner as to be incorporated into the pottery. , And a nozzle may be provided at the tip of the hose inside, and the nozzle may constitute a first outlet. In any case, it is important to ensure dimensional accuracy and positional accuracy.
In addition, although only the first water discharge port 18 is formed in an L shape in the present embodiment, it is more preferable to form the second water discharge port 20 in an L shape as well. Also, even when the second spout 20 is formed in an L shape, even if it is made of pottery, the second spout 20 is formed by a resin component in such a manner as to be incorporated in the pottery. The opening may be opened, a nozzle may be provided at the tip of the hose inside, and the second water outlet 20 may be configured in the nozzle.

  Furthermore, the upper spout 18 a is configured to have a smaller opening area than the lower spout 18 b, and the discharge flow rate is configured to be significantly smaller than that of the lower spout 18 b. The flush water 30 spouted from the first spout 18 configured in this manner is L-shaped to conform to the shape of the spout immediately after it is protruded from the first spout 18 as shown in FIG. However, as the rim portion 14 is advanced, the shape naturally collapses due to the action of surface tension and the like. However, since the washing water 30 spouted from the upper spouting port 18 a is spouted thinly, it proceeds along the upper part of the rim portion 14 and becomes thinner by the action of centrifugal force etc. and at the same time the upper rim of the rim portion 14. It spreads out as it approaches. The thin water film 30a-like water discharge can suppress the protrusion of the washing water 30 from the rim portion 14 and can bring the washing water 30 even to the upper edge of the rim portion 14 where there were a large amount of unwashed water. Can exert It has become possible to significantly reduce the number of times to remove dirt.

  Furthermore, in the present invention, the thin film water film 30a reduces the influence of the centrifugal force to exert the above effect, but this is not the only device such that the washing water 30 is surely prevented from jumping out from the rim portion 14 It is devised. Specifically, the lower washing water 30b spouted from the lower spouting port 18b is configured to be spouted in the width direction with a large flow rate, and the lower washing water 30b spouted from the shelf is provided with a shelf 16 And so on to be gradually dropped into the bowl portion 4. In addition to suppressing the movement of the lower washing water 30b spouted from the lower spout 18b to the upper portion of the rim portion 14 spouted from the upper spout 18a constituting the thin film water film 30a, the surface tension also The force of falling into the bowl portion 4 acts on the thin film water film 30a in such a manner that surface tension is used to oppose the force of the thin film water film 30a from the rim portion 14 by centrifugal force. The membrane 30a remains at the upper edge of the rim portion 14 without jumping out of the rim portion 14 and can clean the rim portion 14 cleanly.

  Further, in the present embodiment, the width of the shelf 16 is designed to be optimum so as to ensure that the thin film water film 30a pops out from the rim 14 by the lower washing water 30b. Specifically, the lateral length of the shelf 16 is designed to be shorter toward the front of the flush toilet 1 and the front end at which the curvature of the front end where the largest centrifugal force acts on the flush water 30 is the largest. The front area including the position makes the horizontal length of the shelf 14 zero. By this, when centrifugal force acts on the washing water 30, a force acts so as to be compressed to the shelf 14 side, but the lower washing water 30b is not on the upper side of the rim 14 but on the bowl 4 side by this compression force. It becomes easy to spread, and this force also works largely as a force to pull down the thin film water film 30 a in the direction of the bowl portion 4. As a result, even if the rim portion 14 is cleanly cleaned to the upper edge, it is possible to reliably prevent the washing water 30 from jumping out of the rim portion 14.

1 flush toilet
2 skirt 4 bowl
6 water channel 8 drain 8a inlet
10 water storage tank
11 Drain valve
12 dirt receiving surface
14 rim part
14a inner side
16 Shelf
18 first spout 18a upper spout 18b lower spout 20 second spout
22 side set hole
24 First Water Passage
26 second water passage
28 third water passage 30 washing water 30a thin film water film 30b lower washing water

Claims (5)

In the flush toilet bowl, the flush water is supplied from the flush water supply means to the toilet bowl, and the bowl portion of the toilet bowl is flushed to discharge dirt.
A bowl-shaped filth receiving surface, and a bowl portion provided with a rim portion erected in a substantially vertical direction at an inner upper end portion;
A reservoir portion provided at the lower portion of the bowl portion, and a drain pipe connection port;
A rim spouting portion for spouting washing water along the inner circumferential surface of the rim portion;
Equipped with
The rim spout that constitutes the rim spout portion has a discharge flow rate per unit time of wash water to the upper portion of the rim portion smaller than a discharge flow rate per unit time of wash water to the lower portion of the rim portion A flush toilet characterized in that it is configured as follows.   The rim spouting portion is configured to supply flush water to the rim portion from a single spout port, and the vertical direction of the top spout port of the rim spout port to form a thin film water film on the upper side of the rim portion The length of the lower part is longer than the length in the width direction, and the length in the width direction is substantially uniform in the vertical direction, and the lower spouting port for supplying the washing water to the lower part of the rim portion A flush toilet characterized in that the discharge flow rate per unit time of flush water from the water port to the lower side of the rim portion is increased.   A flush toilet according to claim 1, wherein the rim spout, which includes the upper spout and the lower spout, is formed in an L shape in a front view.   When the washing water having a large flow rate on the lower side of the rim portion falls to the lower side of the bowl portion, the movement to the washing water side consisting of a thin film water film on the upper side of the rim portion is suppressed and the thin film A flush toilet characterized in that the shelf portion is formed so as to oppose the force of washing water having a large flow rate in the lower portion of the rim portion falling to the lower side of the bowl portion against the centrifugal force acting on the water film.   The shelf is configured such that the horizontal shelf width is smaller at a position farther from the rim spout than the vicinity of the rim spout, and the width of the horizontal shelf is zero at a further distant position. The flush toilet characterized by being comprised.

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