JP5802959B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet which is excellent in water-saving effect and has no overhang on the inner wall surface of the rim portion and is excellent in moldability, cleanability and design.

  Conventionally, various washing-type toilet bowls such as a wash-off type, siphon type, and siphon set type have been proposed and put to practical use. Recently, resource saving and energy saving technologies have attracted attention. From this viewpoint, many flush toilets have been developed that can reduce the amount of washing water used to enhance the water-saving effect.

  For example, as shown in Patent Document 1 and Patent Document 2, in a flush toilet equipped with a bowl portion and a discharge means for discharging wash water, the wash water is used as the main wash water and goes to substantially the entire periphery of the toilet bowl. There has been proposed a cleaning water conduit having a main flow and a diversion cleaning water separated from the main cleaning water to reach the entire inner surface of the bowl portion.

  However, in the above-described Patent Documents 1 and 2, the cleaning water has a structure that causes the cleaning water to travel around the entire circumference along the cleaning water conduit, and the discharge pressure and amount of the cleaning water exceed a predetermined level. It was necessary to enlarge. For this reason, there was a limit to reducing the amount of water used. In addition, since the discharge pressure is large and the washing water may get over the rim and splash outside, it is necessary to provide an overhang on the inner wall surface. For this reason, it is necessary to join and form parts that are separately molded, and the molding efficiency is low. There was a problem that the width of the upper edge was increased and the degree of freedom in design was reduced.

Japanese Patent No. 3382611 Japanese Patent No. 3578169

  The present invention solves the problems as described above, can reduce the diameter of the bowl portion, and can further reduce the discharge pressure and amount of cleaning water, and can exhibit an excellent water-saving effect. Since there is no overhang part on the inner wall surface of the rim part, integral molding is possible and excellent moldability can be demonstrated, and there is no wiping residue of the rim part, and hygienic and excellent cleaning ability can be demonstrated. Furthermore, the present invention has been completed for the purpose of providing a flush toilet which can narrow the width of the upper edge of the rim and can also exhibit excellent design.

The flush toilet of the present invention made to solve the above problems is a bowl-shaped bowl portion that receives filth and accumulates stored water, a discharge device that supplies washing water to the bowl portion, and a bowl portion that is fed into the bowl portion. In the flush toilet equipped with a drainage channel for discharging wash water together with waste and stored water, a horizontal water guide channel is provided at the upper edge of the bowl part to guide the wash water along the upper edge of the bowl part. In addition, a vertical rim portion where the inner wall surface does not overhang inward is provided on the outer peripheral edge of the water conduit, and the water conduit is formed so as to gradually descend from the start position toward the final position. In addition, an inclined surface is formed at the final position of the water conduit so that the cleaning water is guided into the bowl portion so that the cleaning water descends in a spiral flow in the bowl portion due to its own weight, and the discharge device is connected to the tip of the nozzle. Part is horizontal It mounted inclined to face downward from and is characterized in.

  The inclined surface is formed on the near side of the start position, and the water conduit does not circulate around the upper edge of the bowl portion, and this is the invention according to claim 2.

  Preferably, the discharge device is of a gas-mixing type, and a constricted portion is formed in the flow path of the nozzle body, and a gas inlet is faced in the vicinity of the constricted portion. It is set as the invention which concerns on.

Also, parts washing water water conduit falls, is preferably one bulged portion having a water receiving surface equal inclination angle in the tilt angle of the discharge device is formed, the invention according to this claim 4 To do.

The descending step of the water conduit is preferably 5 mm or more, and this is the invention according to claim 5 .

Moreover, it is preferable that the height of the inner wall surface of the rim portion is 50 mm or more, and this is the invention according to claim 6 .

In the invention according to claim 1, in the flush toilet equipped with the bowl-shaped bowl part, the discharge device and the drainage channel, the upper edge part of the bowl part is a horizontal guide for guiding the wash water along the upper edge of the bowl part. In addition to providing a water conduit, a vertical rim that does not overhang the inner wall surface is provided on the outer periphery of the water conduit, and the water conduit is gradually lowered from the start position to the final position. In the final position of the water conduit, an inclined surface is formed that guides the wash water into the bowl part and guides the wash water to descend in a spiral flow in the bowl part due to its own weight. After passing through the water conduit, the water is guided by the inclined surface and guided into the bowl part. Moreover, since the water descends as a spiral flow in the bowl part by its own weight, the flow rate is naturally increased, and the purification performance and drainage performance are further improved. Becomes possible The amount of washing water also makes it possible to a small amount. Furthermore, since the inner wall surface is a vertical rim portion that does not overhang inward, the width of the upper edge of the rim portion can be narrowed, and an excellently designed toilet can be provided. In addition, since the discharge device is mounted so that the nozzle tip portion is inclined downward from the horizontal line, the cleaning water can be supplied smoothly. This eliminates the phenomenon that the residual water disappears and the gas and liquid are mixed and water is scattered during the next injection.

  In the invention according to claim 2, the inclined surface is formed on the front side of the start position, and the water guide path smoothly follows the bowl portion side before the upper edge portion of the bowl portion without making one round. Therefore, all of the washing water is smoothly guided into the bowl portion, and thereafter, naturally becomes a spiral flow and descends vigorously in the bowl portion.

  In the invention according to claim 3, the discharge device is a gas mixing type, and a constricted portion is formed in the flow path of the nozzle body, and the gas inflow port faces the minimum diameter portion of the constricted portion. Since there was a certain thing, even if it is a water flow of a smaller flow velocity for inflow of gas, water can be discharged vigorously and the water-saving effect can be achieved. Moreover, by using the principle of the aspirator, it becomes possible to discharge water more vigorously.

In the invention which concerns on Claim 4 , since the bulging part which has a water receiving surface of the inclination angle equal to the inclination angle of a discharge apparatus was formed in the part where the washing water of a water conduit passes, wash water Since the water falls almost parallel to the water receiving surface and does not generate water splash, the washing water flows smoothly on the water guide channel without being disturbed.

In the invention according to claim 5 , since the descending step of the water conduit is 5 mm or more, the wash water supplied to the water conduit is naturally lowered along the water conduit and from the high side to the low side. The supply pressure of the washing water can be reduced, and the supply amount can be reduced.

In the invention which concerns on Claim 6 , since the height of the inner wall surface of the said rim | limb part was 50 mm or more, it can prevent that the wash water supplied toward the water conduit gets over the rim | limb part and splashes outside.

It is a schematic sectional drawing which shows embodiment of this invention. It is a top view which shows embodiment of this invention. It is a perspective view which shows embodiment of this invention. It is AA sectional drawing of FIG. It is explanatory drawing which shows an inclined surface. It is a top view explaining the flow of washing water. It is sectional drawing which shows the mounting state of a discharge device. It is a perspective view which shows the vicinity of a discharge device. It is explanatory drawing which shows a discharge device. (A) is a bowl part diameter in this invention, (b) is sectional explanatory drawing which shows the bowl part diameter in a prior art example. (A) is a rim part upper end in this invention, (b) is a plane explanatory drawing which shows the rim part upper end in a prior art example.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 is a schematic sectional view of a flush toilet according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a perspective view thereof, and FIG. 4 is a sectional view thereof. In the figure, 1 is a bowl-shaped bowl portion that receives filth and collects the stored water, 2 is a discharge device that supplies cleaning water to the bowl portion 1, and 3 is the cleaning water supplied into the bowl portion together with the filth and stored water. This is a drainage channel that discharges to the outside, and the above configuration is basically the same as that of a conventional flush toilet.

  A horizontal water conduit 4 for guiding the cleaning water supplied from the discharge device 2 along the upper edge of the bowl portion 1 is provided at the upper edge portion of the bowl portion 1. As shown in FIG. 4, the width of the water conduit 4 is about 20 to 50 mm in the horizontal portion, and the washing water flows on the horizontal water conduit and is configured to turn around the upper edge of the bowl portion 1. . This water guide path 4 is for turning the cleaning water along the upper edge of the bowl part 1 and then guiding it into the bowl part to form a spiral flow. The whole bowl part can be washed with a small amount of water. it can.

That is, the water conduit 4 is formed so as to gradually descend from the start position (see 4a in FIG. 6) toward the final position (see 4b in FIG. 6). It is configured to flow naturally from the higher position of the start position 4a toward the lower position of the final position 4b. For example, in the case shown in FIG. 4, the position from the upper end of the rim portion of the water conduit in the central portion is L1 = 55 mm on the upstream side, L2 = 58 mm on the downstream side, and the descending step from the start position 4a to the final position 4b. Is 5 mm or more.
Therefore, even if the discharge pressure of the cleaning water is reduced and the discharge amount is reduced, the cleaning water flows smoothly toward the final position 4b along the water guide path 4 due to the energy that falls.

Further, as shown in FIG. 5, an inclined surface 6 is formed at the final position of the water conduit 4 so as to gradually incline from the horizontal state and finally assimilate to the inclined surface of the bowl portion 1. As shown in FIG. 6, the inclined surface 6 is formed on the front side of the start position 4 a, and the purified water does not go around the upper edge portion of the bowl portion 1, but all the bowls along the inclined surface 6. It will be led into the department. Furthermore, since the wash water introduced into the bowl portion descends as a spiral flow in the bowl portion due to its own weight, the flow rate naturally increases to become a vigorous water flow, and exhibits excellent purification performance and drainage performance.
The inner diameter of the bowl portion 1 is formed so as to be small enough for the water conduit 4 to protrude horizontally inward, so even if the amount of the washing water is small, the bowl portion 1 is vigorous and does not leave much space in the bowl portion. It has a structure that can be cleaned.

Further, a vertical rim portion 5 in which the inner wall surface 5a does not overhang inward is provided on the outer peripheral edge of the water conduit 4. That is, in the present invention, since the discharge pressure and the discharge amount of the cleaning water are reduced, the cleaning water does not get over the rim portion 5 and splash outside, and it is necessary to provide an overhang portion on the inner wall surface 5a as in the prior art. There is no. As a result, there is no hidden part when viewed from above, so there is no wiping residue when cleaning, and it is hygienic, and the rim part 5 can be made thinner and exhibit excellent design. Can do.
In addition, since the rim portion and the bowl portion that were separately molded are conventionally joined and molded, since there is no overhang portion, it can be molded integrally and exhibits excellent moldability. In addition, the height of the inner wall surface of the rim portion is preferably set to 50 mm or more in consideration of scattering of cleaning water.

It is to be noted that the outer shape of the rim portion 5 needs to follow the conventional dimensions because of the need to observe general-purpose dimensions for the toilet seat (not shown), while the diameter of the bowl portion 1 following the rim portion 5 is from the point of water saving. There is a demand to reduce the diameter. As shown in FIG. 10 (b), the diameter of the bowl portion is almost equal to the inner circumference of the overhang portion as shown in FIG. 10 (b). However, in the present invention, as shown in FIG. 10 (a). As described above, since the water guide channel 4 is formed further inward from the inner wall surface 5a of the vertical rim portion 5 and the bowl portion continues inside the water guide channel 4, the diameter of the bowl portion is larger than that of the conventional case. Can be small.
Further, in the case of having a conventional overhang portion, as shown in FIG. 11B, the upper end of the rim portion 5 has a constant width, but in the present invention, as shown in FIG. In addition, it has an excellent design because only the tip has a narrow and narrow shape, and the part on which the toilet seat leg rests has a sufficient width, so it has the same strength as before. Can be guaranteed.

As shown in FIG. 9, the discharge device 2 is a gas mixed type, and is provided with a bulging portion 22 in the flow path of the nozzle body 21 and a constricted portion 23, and this constricted portion. It is assumed that the gas inlet 24 faces the minimum diameter portion 23.
That is, a structure that can discharge water vigorously even if it is a water flow at a lower flow rate to the inflow of gas, can evenly distribute the wash water over the entire bowl area, and can achieve a water-saving effect. It has become. Moreover, since the constricted portion 23 is formed in the flow path and the gas inflow port 24 faces the vicinity of the minimum diameter portion of the constricted portion 23, the structure of the constricted portion 23 is reduced due to the use of the principle of an aspirator. It has a structure that can discharge water more vigorously with the amount of water. Furthermore, since the water force is ensured by mixing water and air, water splashing can be suppressed by the buffering action of both, and in particular, in the conduit where the radius of curvature is smaller than the conventional one as in the present invention. A water splash preventing effect can be obtained.
In FIG. 9, 25 is an electromagnetic valve connected to a water supply source, and 26 is a check valve for preventing water from entering the gas inlet 24.
Further, in the illustrated example, the inner diameter of the nozzle body 21 is 12 mm, the inner diameter of the minimum diameter portion of the constricted portion 23 is 10 mm, and the inner diameter of the gas inlet 24 is 2 mm, but these dimensions can be designed arbitrarily. .

  Further, as shown in FIG. 7, the discharge device 2 is mounted so as to be inclined so that the nozzle tip portion is directed downward from the horizontal line. The inclination angle (α) is preferably 3 to 7 degrees. In this way, by turning the nozzle tip downward, the water inside the nozzle naturally flows out after the stop of the supply of cleaning water and there is no residual water in the nozzle. It is possible to eliminate a phenomenon in which gas and liquid are mixed and water is scattered during the injection.

  Further, as shown in FIG. 8, a bulging portion 7 having a water receiving surface 7 a having an inclination angle equal to the inclination angle of the discharge device 2 is formed at a portion where the cleaning water in the water conduit 4 falls. With such a structure, the washing water falls almost in parallel to the water receiving surface 7a, so that no water splash occurs. As a result, the wash water flows smoothly on the water conduit without being disturbed.

In the flush toilet constructed as described above, as shown in FIG. 6, when flush water is supplied, the flush channel 4 is guided to the water channel 4 and goes around the upper edge of the bowl portion 1, but the water channel 4 starts from the start position 4a. Since it is formed so as to gradually descend toward the final position 4b, even if the discharge pressure and the discharge amount of the supplied cleaning water are reduced, it naturally descends on the water conduit by its own potential energy.
Next, the cleaning water guided to the final position 4 b is guided to the inclined surface 6 and guided into the bowl portion 1. Since the bowl portion 1 has a mortar shape and is designed to have a small diameter, the guided washing water descends while increasing its momentum as a spiral flow in the bowl portion due to its own weight. As a result, the bowl portion 1 is completely cleaned even with a small amount of cleaning water.
Thereafter, the washing water is guided to the drainage channel 3 through the discharge port 3a together with the filth, and is discharged to a sewerage channel or the like according to a conventional method.

  As is clear from the above description, the present invention can reduce the discharge pressure and amount of cleaning water and can exhibit an excellent water-saving effect. In addition, since there is no overhang on the inner wall surface of the rim, it can be integrally molded and can exhibit excellent moldability, and it is hygienic because no wiping residue is left when cleaning. Also excellent in properties. Further, the width of the upper edge of the rim portion can be narrowed, and excellent design can be exhibited. Furthermore, the outer shape of the rim part follows the conventional dimensions, and can accommodate a general-purpose toilet seat, while the diameter of the bowl part can be reduced to increase the water-saving effect. It is something that demonstrates.

DESCRIPTION OF SYMBOLS 1 Bowl part 2 Discharge device 3 Drainage path 3a Outlet 4 Water guide path 4a Start position 4b Final position 5 Rim part 5a Inner wall surface 6 Inclined surface 7 Swelling part 7a Water receiving surface 21 Nozzle body 22 Swelling part 23 Constriction part 24 Gas Inlet 25 Electromagnetic valve 26 Check valve

Claims (6)

Equipped with a bowl-shaped bowl section that receives filth and collects the stored water, a discharge device that supplies cleaning water to the bowl section, and a drainage channel that discharges the cleaning water supplied to the bowl section together with the filth and stored water. In the flush toilet, a horizontal water conduit for guiding the wash water along the upper edge of the bowl portion is provided at the upper edge of the bowl portion, and the inner wall surface overhangs at the outer periphery of the water conduit. A vertical rim portion that does not occur is erected, and the water conduit is formed so as to gradually descend from the start position toward the final position, and cleaning water is guided into the bowl portion at the final position of the water conduit. In addition, an inclined surface for guiding the washing water to descend in a spiral flow in the bowl portion due to its own weight is formed, and the discharge device is mounted with an inclination so that the nozzle tip portion is directed downward from the horizontal line. Be Wash the toilet.   The flush toilet according to claim 1, wherein the inclined surface is formed on the near side of the start position, and the water conduit does not go around the upper edge of the bowl portion.   3. The discharge device according to claim 1 or 2, wherein the discharge device is a gas mixed type, and a constricted portion is formed in a flow path of the nozzle body, and a gas inlet is faced in the vicinity of a minimum diameter portion of the constricted portion. Flush toilet.   The flush toilet according to any one of claims 1 to 3, wherein a bulging portion having a water receiving surface having an inclination angle equal to the inclination angle of the discharge device is formed in a portion of the water conduit where the washing water falls.   The flush toilet according to any one of claims 1 to 4, wherein a descending step of the water conduit is 5 mm or more.   The flush toilet according to any one of claims 1 to 5, wherein the height of the inner wall surface of the rim portion is 50 mm or more.

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