JPH0377338B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a flushing toilet such as a so-called siphon type or siphon jet type which cleans by siphon action, and in particular drains water toward the floor surface.

(Prior Art) FIG. 1 shows a conventional siphon jet type flush toilet of this type.

To explain this, the drainage channel 4' rises from the bottom surface of the ball part 2' along the back side wall of the ball part 2', makes a U-turn from a position where a constant water level can be maintained in the ball part 2', and breaks halfway. While bending, it communicates with the drain port 11' at the bottom of the toilet body A', and part of the flushing water flows from the tip of the rim passageway 6', through the headrace channel 9', and from the fountain hole 10' in the form of a jet, and flows into the drain channel 4. Water is sprayed toward the inlet 4a' of the tank.

Therefore, the cleaning water injected from the water fountain 10' ascends the drain channel 4' toward the U-turn portion 13', makes a U-turn, and flows down violently, but the portion after the U-turn portion 13' is greatly bent. As a result, water mixed with air bubbles and becomes splashes and flows down the drain channel 4' in a full state, pushing out the air in the drain channel 4'.

In particular, since the drain channel 4' is bent at a right angle near the end, water forms a complete plug in this section 20 and flows out toward the drain port 11'. The trapped air is also sucked out, and the inside of the drain channel 4' is finally completely filled with water, and a strong siphon effect occurs due to the difference in water head between the water level in the ball portion 2' and the position of the drain port 11'.

(Problem to be Solved by the Invention) As described above, in the conventional siphon type toilet bowl, the right-angled portion 20 formed near the end of the drain channel 4' is an important structural portion that causes the siphon action. As shown in FIG. 1, the drainage channel 4' may become clogged with long and thick waste, making it unusable.Moreover, since the drainage channel 4' is greatly curved, it is difficult to remove the waste.

The present invention aims to solve the above-mentioned problems and to simplify the structure of the drainage channel so that it is not clogged with filth.

(Means for Achieving the Object) The basic configuration of the present invention for achieving the above object is that the opening section from the upper end of the drainage channel to the drain port is formed in a substantially vertical shape, and the required height of the vertical section is By forming a horizontal step on the side wall opposite to the entrance of the drainage channel, the drainage water collides and scatters and flows in a meandering manner within the drainage channel, causing a siphon effect.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In this embodiment, the toilet main body A is of the siphon jet type, as shown in FIG.

The toilet main body A has a ball part 2, a water supply chamber 3, and a drainage channel 4, which are divided into sections so as to be adjacent to each other through a partition wall 1, and a plurality of water injection holes 5 are provided on the lower surface of the upper end periphery of the ball part 2. An open rim passageway 6 is formed in an annular shape so as to protrude inwardly, and the rim passageway 6 communicates with the water supply chamber 3 via a communication hole 7 at the rear.

The water supply chamber 3 is formed at the rear of the toilet main body A, and has a water supply port 8 on the top surface and a water supply channel 9 defined at the bottom along the back surface of the ball part 2, and the water supply channel 9 has the water supply port 8 formed therein. A fountain hole 10 facing into the drainage channel 4 from the entrance 4a of the channel 4 is opened.

The drainage channel 4 extends obliquely upward along the entrance 4a opened in the bottom wall 1a of the ball part 2 and the back side of the side wall 1b of the ball part 2, and makes a U-turn from a position where a constant water level can be maintained in the ball part 2. An intermediate portion 4b extending substantially vertically downward and an outlet 4c formed above the drain port 11 opened at the rear bottom surface of the toilet main body A are bent into a substantially U-shape and connected to each other.

The side wall 1c of the vertical portion 12 opposite to the inlet 4a of the drainage channel 4 is located at a required height, specifically, the water that has violently risen from the inlet 4a toward the U-tan portion 13 jumps over the weir. A horizontal first step portion 14 having an appropriate width and depth at the collision position.
It is formed so that it protrudes inward.

Also, the drain port 1 is connected to the central axis of the vertical portion 12.
The central axis of 1 is shifted toward the entrance 4a of the drainage channel 4,
At the connection portion between the lower end of the vertical portion 12 and the drain port 11, a second step portion 15 having an appropriate width is horizontally formed on the opposite side of the inlet 4a.

Therefore, such a flush toilet has water supply from the water intake port 8 to the water supply chamber 3.
When cleaning water is sent to the rim, a part of it enters the rim passageway 6 through the communication hole 7, and is sprayed from the water injection hole 5 drilled in the lower surface of the passageway 6 to clean the inner surface of the ball portion 2. The remaining washing water passes through the water conduit 9, forms a jet from the water fountain 10, and is sprayed toward the inlet 4a of the drainage channel 4, and rises within the drainage channel 4 toward the U-turn portion 13.

The water that has jumped over the weir of this U-turn portion 13 collides with the side wall 1c of the vertical portion 12 opposite to the ball portion 2, and most of this water flows down along the side wall 1c as it is, but the first Since the stepped portion 14 is formed, some of the water scatters and accumulates to form a water stopper. When this water plug flows down the drain port 11, the air remaining in the drain channel 4 is sucked out, and the drain channel 4 is finally completely filled with water, causing a siphon effect.

In the above-mentioned embodiment, the first step portion 14 was provided protruding from the side wall 1c of the vertical portion 12, but the present invention is not limited to this. For example, as shown in FIGS. 6 and 7, the first step portion 14 is The first step portion 14 may be made to protrude inward by forming the upper side wall 1d of the portion 14 in a concave shape.

Further, reference numeral 16 in the drawing is a space formed below the ball part 2, and by providing a heat insulating material 17 and a planar heater 18 in this space 16, the ball part 2 can be heated.
It keeps the water inside warm and prevents it from freezing.

(Effects) Since the present invention has the above configuration, it has the following advantages.

The part from the upper end of the drainage channel to the drainage outlet is formed in a substantially vertical shape, and a first
The step part is formed horizontally at the connection part between the end of the drainage channel and the drain outlet, and the second step part is formed horizontally at the part opposite to the entrance of the drainage channel, so that the part near the end of the drainage channel is not bent at right angles as in the conventional method. Because it doesn't bend, it doesn't get clogged with dirt, and even if it does get clogged, it's easy to clean.

Since the opening from the upper end of the drain channel to the drain port is approximately vertical, the suction force generated by the siphon matches the direction of gravity, making it possible to obtain strong suction force.

[Brief explanation of drawings]

FIG. 1 is a longitudinal side view showing an example of a conventional siphon toilet, FIG. 2 is a longitudinal side view of a siphon toilet showing an embodiment of the present invention, and FIGS. 3 and 4 are - 5 is an enlarged sectional view taken along the - line of FIG. 2; FIG. 6 is an enlarged longitudinal sectional view of a flush toilet showing another embodiment of the present invention; FIG. 7 is a sectional view taken along the - line in FIG. 6. A... Toilet main body, 1a... Bottom wall, 1b... Side wall, 1c
...Side wall, 2...Ball portion, 4...Drain channel, 4a...Inlet, 10...Fountain hole, 11...Drain port, 12...Vertical portion, 14...Step portion (first step portion).

Claims (1)

[Claims] 1. In a siphon type toilet equipped with a drain that has an inlet in the bottom wall of the bowl, extends obliquely upward along the back side of the side wall of the bowl, is bent from an appropriate height, and has an outlet in the drain port on the bottom of the toilet. , the opening section from the upper end of the drainage channel to the drainage outlet is formed substantially vertically, and a step section is formed horizontally on the side wall opposite to the entrance of the drainage channel at a required height of the vertical section; A siphon-type toilet bowl featuring