HK1017401B - A wash toilet bowl - Google Patents

Description

Water-flushing toilet

The invention relates to an improved flush toilet.

As shown in fig. 3, a large number of holes 53a are formed in the bottom surface of an annular water passage 53 formed in the upper edge portion of a bowl surface 54, and a large number of holes 53b are formed in a part of the holes so that a large amount of wash water can flow through the large-diameter holes 53b to form a vortex flow in the bowl surface 54 of a conventional water flush toilet body 51. However, with this structure, it is necessary to form many holes 53a and 53b on the bottom side of the annular water passage 53, which causes problems of difficulty in processing and high manufacturing cost.

Therefore, in order to avoid formation of these holes 53a and 53b and to form a satisfactory vortex flow on the bowl surface, there is a toilet bowl 61 having a configuration shown in a plan view of fig. 4 described later, in which a water separator 62 is attached to the rear of the toilet bowl, and the opening width of the left pipe 62a and the right pipe 62b branched from the water separator 62 is changed, for example, a large amount of wash water is made to flow out from the tip of the right pipe 62b into the bowl surface 63, thereby forming a satisfactory vortex flow on the bowl surface 63. In the toilet bowl 61 using the water separator 62, the water separator 62 is required to be separately provided because the balance of the discharge of the washing water to the left and right of the bowl surface 63 is adjusted by the water separator 62 to form a vortex flow.

In view of the above problems, it is an object of the present invention to provide a water flush toilet that can satisfactorily wash the inside of a bowl by forming a vortex flow on a surface of the bowl without using a water separator.

The water flush toilet of the present invention includes a central water passage for allowing flush water to flow from a flush water port provided in an upper surface of a rear part of the toilet to a rear part of a toilet bowl, and the central water passage is formed so as to be narrowed on a side of the flush water port and to be expanded in a fan shape toward a side of the bowl surface.

The toilet according to the present invention has an annular water passage with an open bottom at an upper edge portion of the bowl surface, and a left or right side passage passing through the central water passage from the cleaning water port and supplying cleaning water to the annular water passage in a one-side swirling manner.

Brief description of the drawings.

Figure 1 is a top view of a toilet body,

figure 2 is a central longitudinal section of figure 1,

figure 3 is a top view of a conventional toilet bowl,

fig. 4 is a plan view of a conventional toilet using a water separator.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a plan view of a toilet body, and fig. 2 is a central longitudinal sectional view of fig. 1.

In the figure, a washing water port 2 is opened in the upper surface of the rear part of a toilet main body 1, and washing water is supplied to this washing water port 2 from a pump tank or the like provided above. A central water passage 3 facing the front center of the toilet main unit 1 is formed in the lower part of the cleaning water port 2, and an outer water passage 4 is formed in the right side part thereof. Further, the toilet main body 1 has a bowl surface having an upper edge portion formed with a rim portion 5a, and a rim water passage 5 having a bottom opening 5b formed along the entire bottom side circumference inside the rim portion 5a, in a front portion thereof. The entire bottom side of the rim water passage 5 is opened to the bowl surfaces 6a and 6b through the bottom opening 5b, and the rim water passage 5 is configured to allow the washing water to flow down from the rim water passage 5 to the bowl surfaces 6a and 6b through the bottom opening 5 b. The washing water passing through the central water path 3 flows down to the rear pelvic surface portion 6 b.

The sealing water W is collected between the pelvic floor surface front portion 6a and the pelvic floor surface rear portion 6b, and has a water collection portion inlet 7a at the bottom side thereof and a water collection portion 7 formed to be inclined rearward.

As shown in fig. 1, in this example, the central water passage 3 and the outer water passage 4 are formed by a ceramic wall formed integrally with the toilet main body 1, the central water passage is formed in the front-rear direction between the water passage inner walls 10a and 10b, the water passage inner walls 10a and 10b are formed so as to expand from the rear side to the front side in a substantially fan-shaped manner to form inclined surfaces, the rear end inlet 3a between the water passage inner walls 10a and 10b is narrow, and the opening on the side of the bowl surface rear portion 6b is wide.

On the other hand, the outer water passage 4 is formed between the right end outer peripheral wall 1b of the toilet main unit 1 and the water passage outer wall 11b connected to the water passage inner wall 10b, and a wide passage is formed to allow a large amount of wash water to flow from the wash water port 2 to the rim water passage 5.

On the other hand, a gap formed between the left end outer peripheral wall 1a of the toilet main body 1 and the water channel outer wall 11a connected to the water channel inner wall 10a is formed narrow, and washing water hardly passes through the gap.

Therefore, the washing water supplied to the washing water port 2 from a raw water tank or the like, not shown, can flow down from the washing water port 2 through the right outer water passage 4 and the rim water passage 5 with a good water flow force that whirls counterclockwise to form a vortex flow on the pelvic surface front portion 6 a. The front part 6a of the pelvic cavity surface is cleaned well by the eddy current. Further, although a part of the washing water from the washing water port 2 flows down to the rear part 6b of the pelvic surface through the central water passage 3, the inlet 3a of the central water passage 3 is narrow and becomes a passage expanding in a fan shape after passing through the narrow inlet 3a, and the washing water flows down in a wide range to the rear part 6b of the pelvic surface while expanding laterally in the central water passage 3, so that the washing water can flow over the entire rear part 6b of the pelvic surface and the rear part 6b of the pelvic surface can be washed well. Further, since the central water passage 3 expands in a fan shape toward the rear part 6b of the pelvic surface, the washing water is forcibly expanded in the lateral direction, and the flow velocity is suppressed to flow down along the rear part of the pelvic surface, the part under the water seal W which becomes a stream of mist is reduced, and the rear part 6b of the pelvic surface is washed well over a wide range because the mist is also reduced as compared with the conventional one.

In the present example described above, the conventional water separator 62 is not provided, but the single-sided water passage 4 is formed of ceramic, so that a large amount of cleaning water can be made to flow to the front part 6a of the bowl surface in a single-sided swirling manner, a vortex flow is strongly formed, and the cleaning water can be made to flow to the rear part 6b of the bowl surface in a wide range through the central water passage 3, whereby the entire bowl surfaces 6a, 6b can be cleaned well. Further, the vortex can be smoothly pushed into the water collection part 7 from the water collection part inlet 7a and discharged.

In this example, the outer water passage 4 is formed on the right side of the toilet main unit 1, but the same effect can be obtained by forming the outer water passage on the left side and forming the clockwise whirling vortex flow on the bowl front portion 6 a.

The invention relates to a water flush toilet, which comprises a central water passage for making the washing water flow from a washing water port opened on the upper surface of the rear part of the toilet to the rear part of the basin cavity surface of the toilet, and a fan-shaped expanding shape formed by narrowing one side of the washing water port of the central water passage and then making the washing water flow to the side of the basin cavity surface.

Further, by forming a rim water passage with an open bottom at the upper edge portion of the toilet bowl surface and supplying the washing water from the washing water port to the rim water passage in a one-side swirling manner through the left or right side of the central water passage, the washing water flowing down from the washing water port through the one-side swirling water passage strongly forms a vortex flow on the toilet bowl surface, and thus the toilet bowl surface can be strongly washed.

Claims (2)

1. A water flush toilet bowl comprising a central water passage for allowing flush water to flow from a flush water port provided in an upper surface of a rear part of the toilet bowl to a rear part of a bowl surface of the toilet bowl, wherein the central water passage has a shape narrowed at a side of the flush water port and then expanded in a fan shape toward the side of the bowl surface.

2. The toilet according to claim 1, wherein the upper edge portion of the toilet bowl surface has a rim water passage having an open bottom, and the rim water passage is supplied with wash water from the wash water port, through a left or right water passage of the central water passage, and in a one-side swirling manner.