JPH03212528A - Water closet - Google Patents

Abstract

PURPOSE:To save flushing water by providing holes having water guide surfaces in several water holes of the front part of a number of water holes provided in a rim water passage around a protector, and strengthening the concentrated force of the flushing water to increase the flushing force. CONSTITUTION:A rim water passage 4 having a number of water holes is provided around the upper part of a closet bowl part 1, and in about four holes in the front part thereof, holes 3 having water guide surfaces 8 acting as nozzles are provided. The concentrated force of flushing water branches is strengthened to increase the flushing force without requiring excessive water feed. The bottom of the bowl part 1a is recessed in V-shaped section, and a step part 9 is formed in a trap drainage 2 to early cause siphon effect. Hence, a strong flushing force can be obtained with less feed quantity.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a flush toilet, particularly a seated flush toilet.

(Prior Art) Conventionally, this type of flush toilet has a rim passageway 4 provided at the upper end periphery of a ball part 1 having a trap inlet at the rear of the lowest part, and a rim passageway 4 provided at a distance from the bottom wall 4z of the rim passageway 4. Rim water outlet 3
A large number of rim water outlets 3 are provided, and the force of the washing water sprayed from each rim water outlet 3 causes a siphon effect in the trap drainage channel to discharge waste (Fig. 6).

(Problem to be Solved by the Invention) In order to minimize the amount of flush water supplied in the above-mentioned flush toilet, the flush water tributaries a1 ejected from each rim water outlet 3 are combined to form a main stream. It is thought that the force of this mainstream causes a siphon effect within the trap drainage channel.

However, in reality, the curvature of the ball surface 1a causes variations in the directions of the washing water tributaries a1, so the cohesive force of these washing water tributaries a1 becomes weak, and therefore a considerable amount (10 to 15! It is difficult to say that the water saving performance is excellent.

The present invention has been made in view of the above-mentioned conventional circumstances, and its purpose is to strengthen the cohesive force of wash water tributaries and to achieve water saving properties that can reliably cause a siphon effect even when a small amount of water is supplied. Our goal is to provide superior flush toilets.

(Means for Solving the Problems) In order to achieve the above object, in the flush toilet of the present invention, the water passage guide surface of the rim water outlet provided in the frontmost side bottom wall of the rim passageway is connected to the bottom wall. It is characterized by elongation in the thickness direction.

In order to extend the water guide surface, the inner wall of the rim water outlet may be made to protrude inside or outside the rim water outlet, or a cylindrical member may be attached to the rim water outlet and the rim water outlet may be extended. It is advantageous for the ends of the shaped members to protrude inside or outside the rim water passageway or inwardly and outwardly.

(Function) According to the present invention, the water flow guide surfaces at the several rim water outlet holes on the frontmost side of the rim flow channel are lengthened, and these guide surfaces cause the washing water tributary to flow in a straight line with less variation. By guiding the washing water tributaries in this way, the cohesive force of these wash water tributaries becomes stronger, thereby forming a main stream that flows forcefully straight from the frontmost side of the rim passageway toward the trap entrance.
This mainstream causes a siphon effect.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

In the figure, A is the toilet main body, which is equipped with a ball part 1 and a trap drainage channel 2 provided adjacent to the ball part 1. A rim water passage 4 with a rim water outlet 3 is made to protrude inward from the ball part 1, and a trap drainage passage 2 is formed in a roughly S-shape between a trap population 5 and an outlet 6 formed on the rear bottom surface of the toilet body A. It has the structural form of a siphon flush toilet that is bent and connected. Further, a dirt dropping recess 7 is formed at the rearmost part of the ball part 1, and the trap 5 is opened at the rear side of the dirt dropping recess 7.

Several (four in the drawing) rim water outlet holes 3 provided on the frontmost side of the Tsumu water passageway 4, that is, on the so-called lip side 4', have an extra large diameter, specifically, a diameter larger than that of other rim water outlet holes. 3 has a diameter of about 3φ, it is formed to have a diameter of about 20φ to 22φ. Furthermore, the inner wall 8' is made to protrude into the rim water passageway 4, thereby extending the water passage guide surface 8 in the thickness direction of the bottom wall 4a, specifically, the water passage guide surface of the other rim water outlet hole. length is 6+
+m, whereas it is formed to be about 12W to 16mm.

As the water flow guide surface 8 of the several rim water outlet holes 3 on the lip side 4' becomes longer, this guide surface 8 allows the washing water tributary stream a to flow in a straight line with less variation. This strengthens the cohesive force of the washing water tributary stream a1 ejected from the lip side 4', thereby forming a main stream a that flows forcefully straight toward the trap population 5.

In addition, in this embodiment, the rear bottom portion 1a of the ball portion 1 is
' The shape of the ball surface 1a of the ball part 1 is formed into a concave shape with a substantially V-shaped cross section, so that a tributary of the cleaning water sprayed from each rim water outlet 3 flows through the bottom la' of the V-shaped concave cross section of the ball part 1.
In addition, the main stream of washing water does not spread out, and the force of the water flow can be concentrated.

Furthermore, a stepped portion 9 is formed in the trap drainage channel 2 over about half of its circumference, thereby causing the siphon to occur quickly.

In addition, the rim passageway 4 is formed with its bottom facing outward and slanting downward, and by prolonging the water injection from the rear of the rim passageway 4, it is possible to secure supplementary water for water sealing. There is.

In addition, a stepped portion 10 is provided at a portion of the ball surface 1a corresponding to the position of the water reservoir surface, so that a wide water reservoir surface can be obtained even with a small amount of water reservoir.

The structure of the rim water outlet hole 3 on the lip side 4' is not limited to that shown in FIG. 1, and the inner wall 8' can also be made to protrude outside or inward of the rim water passageway 4. Also,
As shown in FIG. 5, a cylindrical member 11 having a water guide surface 8 which is longer than the wall thickness of the bottom wall 4a of the rim water passage 4 is molded from rubber or resin material so that the rim water at 4° on the lip side is formed. It can also be configured by fitting into the outlet hole 3 or by fixing and assembling this cylindrical member 11 by means such as adhesive.

In this case as well, it is optional to make the end of the cylindrical member 11 protrude inside or outside the rim passageway 4 or inward or outward.

(Effects of the Invention) Since the present invention is configured as described above, it produces the effects described below.

According to the flush toilet according to claim 1, it is possible to cause a siphon effect in the trap drainage channel by strengthening the cohesive force of the flush water tributary that is injected from the frontmost side of the rim water passage, and therefore, it is possible to cause a siphon effect in the trap drainage channel. To provide a flush toilet with excellent water-saving properties that can reliably cause a siphon effect even with a small amount of water supply without requiring extra water supply to concentrate the force of wash water tributaries that vary widely.

Further, according to the flush toilet according to claim 2, since the water flow guide surface of the rim water outlet on the frontmost side can be extended when molding the toilet main body, for example, a separate member can be assembled to the rim water outlet. The work is easier than attaching the parts and extending the water guide surface, and there is no risk of forgetting to attach the parts at the time of shipment.

Furthermore, according to the flush toilet according to claim 3, the water passage guide surface can be extended by a simple means of attaching a cylindrical member to the rim water outlet hole, so that its manufacture is extremely easy. .

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional side view of the toilet bowl body, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a sectional view taken along the line 3-3 of Fig. 1, and Fig. 4 The figure is a perspective view of FIG. 3, and FIG. 5 is a sectional view of a main part according to another embodiment. FIG. 6 is a partial perspective view of a conventional flush toilet. In addition, 4 in the figure: rim water passage 4a: bottom wall 3: rim water outlet 8: water flow guide surface 8-inner wall 11: cylindrical member

Claims (3)

[Claims] (1) A flush toilet characterized in that water guide surfaces in several rim water outlet holes provided in the frontmost side bottom wall of the rim water passageway extend in the thickness direction of the bottom wall. (2) The flush toilet bowl according to claim 1, wherein the inner wall of the rim water outlet protrudes inside or outside the rim water passageway or inwardly and outwardly. (3) A flush toilet according to claim 1, wherein a cylindrical member is attached to the rim water outlet, and an end portion of the cylindrical member projects inside or outside the rim water passageway.