JP2007327223A - Western style flush toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a western style flush toilet bowl the rim surface of which is hard to be stained by urine excreted from a man in a standing position. <P>SOLUTION: In this toilet bowl, a rim part 3 forms the upper edge outer peripheral portion of a ball part 21 in which flushing water is stored and through which the flushing water flows by a draining operation after using a toilet. The thickness (a) of the forward portion 31 of the rim part 3 is formed smaller than the thickness (b) of the side portion thereof. In the forward portion 31 in an area where the lateral width (c) (lateral width when viewed from the use direction) is at least 100 mm, the thickness is desirably smaller than the thickness (b) of the side portion 32 which is normally approximately 35 to 45 mm, and the thickness (a) of the center end portion desirably is formed within the range of 8 to 15 mm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a Western-style flush toilet, and more particularly, to an improved flush toilet for preventing dirt on a rim caused by boy's urine.

  Conventionally, Western-style flush toilets that allow a boy to urinate while standing are in widespread use. The appearance of the Western style flush toilet is as shown in the perspective view of FIG. 5, the rim upper surface portion 11 of the toilet body 1 is formed in a flat shape, and the thickness a is usually 35 mm even at the thinnest part. About 45 mm.

  There are various types of cleaning in the bowl of the flush toilet, but generally there are many types in which the rim portion is formed hollow and the hollow portion is used as a passage for cleaning water. In recent years, in order to facilitate cleaning of the rim, a method of cleaning while turning along the inner wall surface of the upper edge of the ball has been frequently seen. (For example, see Patent Document 1)

In any case, the structure of the rim can be used as a water passage, as well as providing a water return function, as well as the purpose of supporting a lid and toilet seat that can be laid down. Dimensions were needed.
Therefore, when a boy urinates while standing up, there is a problem that urine is easily applied to the upper surface of the rim in the front part of the toilet and it is difficult for the urine to flow into the ball. In addition, since the back surface of the overhang is difficult to clean, a part of the urine flowing into the ball remains there and is fixed as a solid substance, causing odor.

Japanese Patent No. 3381261 Patent Publication

  The present invention has been made to solve the above-described problems, and provides a Western-style flush toilet with which the upper surface of the rim is not easily soiled by urine in which the boy is standing, and the front portion of the rim that has been easily soiled in the past. Provided is a Western style flush toilet that can be easily cleaned from the upper surface to the inner surface.

  The above-mentioned problem can be solved by the Western-style flush toilet of the present invention characterized in that, in the rim portion of the ball portion of the Western-style flush toilet, the thickness of the front portion is smaller than the thickness of the side portion. . The present invention is preferably embodied in a form in which the front portion of the rim portion has a width of 100 mm or more, the thickness is smaller than the thickness of the side portion, and the thickness of the central tip portion is 8 mm to 15 mm. Can be

  Furthermore, in the present invention, it is more preferable that the wall surface from the rim portion to the bottom of the ball portion at the central front end portion of the front portion of the ball portion is formed in a downward slope without accompanying an overhang shape. Further, the central front end portion of the front portion of the ball portion is composed of an inner wall of the ball portion and an outer wall of the toilet body, and is formed in a two-layer structure having a space with the upper end closed and increasing in thickness downward. Is preferred.

Thus, the Western-style flush toilet of the present invention is configured so that the horizontal thickness of the front portion in the rim portion of the ball portion of the Western-style flush toilet is smaller than the same thickness of the side portion. The upper surface of the rim is not easily soiled by urine. Further, the cleaning can be easily performed from the upper surface to the inner surface of the front portion of the rim portion, which has been easily contaminated in the related art.
Therefore, the present invention has an extremely large industrial value as a Western style flush toilet which has solved the conventional problems.

Next, an embodiment according to the Western-style flush toilet of the present invention will be described with reference to FIGS.
The feature of the present invention is that, in the rim upper surface portion 3 of the ball portion 21 of the western style flush toilet 2, the thickness of the front portion 31 in the horizontal direction is the thickness of the side portion 32 (usually about 35 mm to 45 mm). Specifically, first, the present invention is directed to a stationary type Western style flush toilet that is placed and installed on a toilet floor as exemplified in FIGS. Yes.

  And in the rim part 3 which comprises the upper edge outer peripheral part of the ball | bowl part 21 in which wash water is stored and flush water is poured by the drainage operation after a stool, the thickness a of the front part 31 (horizontal thickness: figure 2) is formed smaller than the thickness b of the side portion 32 (thickness in the horizontal direction: see FIG. 3). In this case, in the front portion 31 in a range where the lateral width c (see FIG. 1: the width of the left and right equidistant from the tip when viewed from the direction of use) is at least 100 mm, the thickness is the thickness of the side portion 32. It is preferable that the thickness a is smaller than b and the thickness a of the central tip portion is formed in the range of 8 mm to 15 mm. In this case, the lateral width c for reducing the thickness a is not necessary because the effect is small even if it is 200 mm or more.

  If the thickness “a” of the central tip portion is less than 8 mm, the strength is not preferable. On the other hand, if it is larger than 15 mm, dirt is likely to remain, such being undesirable. Further, the front portion 31 of the rim portion is preferably formed to have a substantially arcuate tip portion in the cross section, and not only the center tip portion but also the front portion 31 in a range where the lateral width c is at least 100 mm. In the same manner, it is preferable that the tip portion is formed in a substantially arc shape.

  Furthermore, as a preferable shape of the central front end portion of the front portion, the present invention is such that the wall surface from the top of the rim upper surface portion 31a to the bottom region 21c of the ball portion at the central front end portion of the ball portion front portion is lowered without an overhang shape. It is preferably formed in a gradient.

  In addition, it is preferable that the wall surface from the top of the rim upper surface portion 31a of the front portion 31 in the range where the lateral width c is at least 100 mm to the bottom region 21c of the ball portion is also formed. In addition, in the side portion other than the portion not accompanied by the overhang shape of the front portion, the overhang shape 32c can be formed as illustrated in FIG. 3B.

  Thus, in the present invention, it is possible to reduce the adhesion of dirt by 70% or more by reducing the thickness of the rim upper surface portion of the front part of the toilet bowl. Further, the dirt can be further cut by forming the rim upper surface portion from a flat shape to an arc shape. Furthermore, if the inner wall surface from the top surface of the rim to the bottom of the ball is not formed in an overhang shape, daily cleaning will be sufficient, and dirt will not remain on the back surface of the conventional overhang shape. Odor caused by dirty dirt can be prevented. As described above, according to the present invention, it is possible to use the device without worrying about urine dirt, and it is possible to obtain the advantage of saving the labor of cleaning.

  Furthermore, in the present invention, in the vicinity of the center front end of the ball portion front portion 31, as shown in the cross section shown in FIG. 4, the ball portion side inner wall 31 c and the outer wall 31 b on the outer side of the toilet main body are formed. 31a is provided with a closed space 33 and is formed in a two-layer structure in which the overall thickness increases downward, for example, at a position where the depth d is 65 mm downward from the rim upper surface 31a. It is also preferably embodied in a hem-spread shape in which the length e is 25 to 35 mm. By adopting such a two-layer structure, the structure is reinforced in comparison with the one-layer structure, so that it is easy to obtain a practically sufficient structural strength, or an advantage in production technology such as easy manufacture. It is done.

Next, an outline of the ball structure and cleaning action of the Western style flush toilet of the present invention will be described.
As shown in FIGS. 2, 3, and 6, the flush toilet 2 to which the present invention is applied has a flush water supply port 4 at the rear of the ball portion 21 and an upper edge of the ball portion as above. Of the rim portion 3 provided at the periphery of the opening, the rim thickness a of the ball portion front portion 31 is made thinner than the side portion 32.

  In this flush toilet 2, after the stool is finished, the washing valve (not shown) is operated, so that the washing water supplied from the washing water supply port 4 provided in the rear part passes through the water passage 41, respectively. It is discharged from the main cleaning port 5 and the diversion cleaning port 6 arranged in the upper part of the section.

  The main cleaning port 5 is provided at the rear of the ball portion and above the drainage inlet 7, and the squirting water 5 b (shown by an arrow, the same applies hereinafter) that directs the cleaning water toward the drainage inlet 7 and the squirting water 5 a that is directed obliquely downward (Arrow indication, the same applies below). And the main washing port 5 is arrange | positioned so that the spouting water 5a may flow through the forced turning area | region 21b which is an intermediate area | region of the bottom part area | region 21c and the upper turning area | region 21a mentioned later.

  Further, the diversion washing port 6 is provided in a portion covered with the rim portion 32 on the side of the ball portion, and the washing water is jetted as a jet water 6a (arrow indication, the same applies hereinafter) in a substantially horizontal direction. And it arrange | positions so that the upper turning area | region 21a which is a ball | bowl part upper periphery part may flow mainly among ball part inner surfaces.

  In this way, the squirting water 5a, 5b, 6a spouted from the respective cleaning ports is directed to the respective directions to clean the respective regions, but finally drains through the drainage channel inlet 7 while joining. It is discharged to the road exit 8. The drainage from the drainage channel outlet 8 is discharged to the outside via the floor drainage socket 81 or the wall drainage socket 82 having a siphon function.

  With the above-described cleaning configuration, the swirling flow of the squirting water 5a which is ejected from the main cleaning port 5 and which is directed obliquely downward involves the stagnant water normally retained in the bottom region 21c and exerts a strong cleaning effect. The squirting water 5b heading in the direction of the drainage inlet 7 induces siphon drainage by the jetting power.

  Therefore, the jet water 6a heading in the substantially horizontal direction from the branch cleaning port 6 only needs to clean the upper swirl area 21a where the splashes of filth are adhered, so that the entire inner surface of the ball can be obtained only with this type of conventional jet water 6a. The amount of water can be reduced as compared with the cleaning method in which the water is washed. As a result, it was possible to reduce the amount of washing water used by about 20%.

  Further, as described above, the amount of the jet water 6a directed from the branch cleaning port 6 in the substantially horizontal direction can be reduced, so that one of the features of the present invention is from the top of the rim top surface portion 31a to the bottom region 21c of the ball portion. Even if the facing wall is formed in a gentle inclined structure without an overhang shape, it can be designed so that the washing water does not jump out and the gradient can also be designed loosely. The present invention can be advantageously applied to the structure of the rim portion of the present invention.

The principal part top view for demonstrating embodiment of this invention. Xx sectional sectional view of an embodiment. Front view (A) of embodiment, yy sectional drawing (B). The principal part sectional view showing the central tip part of the ball part front part of an embodiment. The perspective view of the conventional western style flush toilet. The principal part top view for demonstrating the washing | cleaning system of the flush toilet bowl of this invention.

Explanation of symbols

2: flush toilet, 21: ball portion, 21c: bottom region 3: rim portion, 31: front portion, 31a: rim upper surface portion, 31c: inner wall, 31b: outer wall, 32: side portion, 33: space

Claims (4)

      A western style flush toilet, characterized in that the front portion of the ball rim of the western style flush toilet has a thickness smaller than that of the side portion.       2. The rim portion according to claim 1, wherein a front portion of the rim portion has a width of 100 mm or more, a thickness smaller than that of a side portion, and a thickness of a central tip portion of 8 mm to 15 mm. Western style flush toilet.       The Western-style flush toilet according to claim 1 or 2, wherein a wall surface from the rim portion to the bottom of the ball portion at the center front end portion of the front portion of the ball portion is formed with a downward slope without accompanying an overhang shape. The center front end portion of the front portion of the ball portion is composed of an inner wall of the ball portion and an outer wall of the toilet body, and is formed in a two-layer structure having a space with the upper end closed and increasing in thickness downward. Or Western-style flush toilet according to 3.

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