JPH0240145Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a flush toilet having a configuration in which a rim passageway is formed all around the upper part of the ball portion of the toilet bowl body, and flushing water is spouted from the rim passageway. .

[Conventional technology]

As described in Japanese Utility Model Application Publication No. 60-45783, a conventional flush toilet has a configuration in which flush water is supplied from both the water injection port provided in the rim passageway at the upper end of the ball portion and the spout port at the bottom of the ball portion. There is a siphon jet type.

As shown in Fig. 6, an annular rim passageway 3 is formed around the entire upper end of the ball part 2 of the toilet main body 1, and a jet water outlet 4 is provided at the bottom of the bowl part 2 to discharge flush water. The water is supplied into the ball portion 2 from a plurality of water injection ports 5 and spout ports 4 provided in the rim passageway 3.

The cleaning water in the rim passageway 3 flows down from the supply chamber 6 on the side of the cleaning water tank to the left and right, is sequentially discharged from the water injection port 5, and merges at the tip side of the toilet main body 1, and the combined cleaning water is sprayed. The flow of cleaning water is supplied to the outlet 4.

In a cleaning system in which the cleaning water joins at the tip of the rim passageway 3, the noise at the time of merging and the sound of mixing with the air remaining in the rim passageway 3 become louder, and the cleaning performance decreases. It is necessary to quickly exhaust the air to the outside.

For this purpose, an air vent hole 30 that also serves as an air vent is provided at the tip of the rim water passage 3 to reduce cleaning noise and to eject cleaning water from the air vent hole 30 into the ball portion 2 in a substantially horizontal direction. It is configured to do this.

[Problem that the invention attempts to solve]

However, the washing water flowing in the rim water passage 3 is
At the start of cleaning, the inside of the rim passageway 3 is not filled with water, so air cannot be removed all at once, and air and cleaning water are mixed and supplied into the ball part 2 from the water injection port 5 in a state containing air bubbles. be done.

Furthermore, since the air vent hole 30 is located at the final end of the cleaning water flow path and discharges the cleaning water flow into the ball portion 2 in the opposite direction to the inside of the rim water passage 3, stagnation occurs in the air vent hole 30 portion. , affecting the smooth evacuation of air.

Therefore, when the inside of the rim passageway 3 is filled with water, the cleaning noise due to air entrainment becomes high until the air is completely exhausted, and the exhaust noise due to stagnation in the air vent hole 30 also becomes louder, further reducing the cleaning performance. There is a problem with the decline.

An object of the present invention is to promptly discharge air from the rim water passageway at the same time as the flow of cleaning water begins, thereby preventing air from entering the rim, reducing cleaning noise, and improving cleaning performance.

[Means and actions for solving problems]

The present invention is a flush toilet in which a rim passageway is provided around the entire upper end of the bowl part of the toilet body, and flush water is discharged toward the bowl part from a plurality of water injection ports provided in the bottom wall of the rim passageway. An air vent pipe is provided in the water channel, the cross section of which extends upward, and the lower end opens toward the ball part, and the air in the rim flow channel at the start of cleaning is discharged from this air vent pipe, and subsequent cleaning is carried out. This is intended to prevent air from entering the water, reduce cleaning noise, and improve cleaning performance.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

Figure 1 is a plan view of the flush toilet according to the present invention;
The figure is a sectional view taken along the - line arrow in Figure 1.
The figure is an enlarged sectional view taken along the same line.

Note that the assigned numbers are common to components that perform the same functions as those of the conventional example shown in FIG.

The tip of the rim passageway 3 with the water injection port 5 formed at the upper end of the ball portion 2 of the toilet body 1 communicates with the spout 4 at the bottom of the bowl portion 2 through an opening 10 and a communication channel 11. There is.

Wash water flowing into the supply chamber 6 from a wash water tank (not shown) integrally connected to the upper surface of the rear side of the toilet main body 1 flows in two directions through the rim passageway 3 and sequentially passes from the water injection port 5 to the ball portion 2. At the same time, the waste is ejected from the spout 4 through the opening 10 and the connecting channel 11, and is discharged from the drain port 14 by a siphon action based on the shape of the drainage channel 13.

Reference numeral 15 denotes an air vent pipe disposed inside the rim passageway 3, and the bottom wall 1 of the rim passageway 3 as shown in FIG.
It is fitted into the mounting hole 17 opened at 6 from below and fixed.

This air vent pipe 15 is made of elastically deformable hard urethane or the like, and has a flange 18 formed at the lower end, and a tapered part 20 whose diameter is reduced toward the upper side with a flange 19 having an outer diameter slightly larger than the inner diameter of the mounting port 17.
The elastic deformation of the flange portion 19 is utilized to fit into the mounting opening 17 and fix it.

The shape of the flange portion 19 may be an arcuate cross-section as shown in FIG. 4, or the portion above the flange 18 may be bulged outward as shown in FIG.
It may be configured such that it can be fitted into the attachment port 17.

Further, the air vent pipe 15 is preferably located on the tip side of the toilet main body 1, but it is necessary that the width of the bottom wall 16 of the rim passageway 3 is within a region where the attachment opening 17 can be formed.

In the above configuration, when the supply of cleaning water is started, the inside of the rim passageway 3 is not filled with water as shown in Fig. 3, and the accumulated air compressed by the inflow of cleaning water increases as the cleaning water level rises. Air vent pipe 15
It is quickly discharged from the upper end.

Since the compressed air is discharged at the beginning of cleaning, even if the rim passageway 3 becomes full of water due to subsequent flushing water, the flushing water will entrain residual air and cause the water injection port to flow out. 5, the proportion of air bubbles discharged from the air bubbles decreases.

In addition, the cleaning water flows smoothly from the opening 10 and the communication channel 11 in the direction of the spout 4 without being stagnant.
It is possible to prevent the generation of noise and improve the cleaning ability.

As described above, air is discharged from the air vent pipe 15 at the start of cleaning, and when the inside of the rim passageway 3 is full of water, air is prevented from being drawn into the cleaning water discharged from the water injection port 5, so that the cleaning noise is reduced. and improve cleaning performance.

[Effect of idea]

This invention can drain cleaning water without entraining air in the rim water passage, reducing cleaning noise.
Moreover, since the cleaning water flows smoothly down from the rim passageway to the jet water spouting outlet without being stagnant, the overall cleaning sound level can be lowered and the cleaning ability can be improved.

[Brief explanation of drawings]

Figure 1 is a plan view of the flush toilet according to the present invention;
The figure is a sectional view taken along the - line arrow in Figure 1.
The figure is an enlarged cross-sectional view taken along the same line, FIGS. 4 and 5 are cross-sectional views showing other air vent pipes, and FIG. 6 is a cross-sectional view showing the main parts of a conventional flush toilet. DESCRIPTION OF SYMBOLS 1... Toilet main body, 2... Ball portion, 3... Rim passageway, 4... Spout, 5... Water injection port, 6... Supply chamber, 10... Opening, 11... Connection channel, 13 …
... Drain channel, 14 ... Drain port, 15 ... Air vent pipe, 16 ... Bottom wall, 17 ... Installation port, 18 ...
Flange, 19... collar.

Claims (1)

[Scope of utility model registration request] In a flush toilet in which a rim water passage connected to a flushing water source is provided around the entire upper end of the bowl part of the toilet body, and a plurality of water injection ports are provided on the bottom wall of the rim passageway for discharging flushing water in the direction of the ball part, the above-mentioned A flush toilet characterized in that an air vent pipe is provided in the rim passageway, the air vent pipe extending upward in the cross section of the rim passageway and having a lower end opening toward the ball portion.