JP2008031656A - Water closet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water closet which prevents the adhesion of soil to an area immediately below the position of the buttocks. <P>SOLUTION: A flushing-water exhaust port 3 which makes flushing water flow to a bowl surface in the area 1 immediately below the position of the buttocks is arranged at the top of the bowl surface 12 in front of or in the rear of a toilet-bowl trap inlet 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a flush toilet designed to prevent dirt from adhering to a bowl surface.

  In a flush toilet, it is an important design requirement to determine the depth of water in the region directly below the butt when sitting on a toilet. When the water depth is increased, the stool filth is less likely to adhere to the bowl surface of the toilet bowl, so that the bowl surface can be kept clean. May jump and stick to the buttocks, which may cause discomfort. However, when the water depth is shallow, for example, as shown in the cross-sectional view of FIG. 4, the splashing of water is improved, but the filth 11 tends to adhere to the bowl surface 12 of the toilet bowl. Since there is a limit to the amount of water supplied, there may be a problem that the attached dirt 11 cannot be washed off. In particular, since the bowl surface 12A immediately below the anus position of the buttocks is in a position where the washing water from the rim 13 of the toilet bowl is not easily reached, the filth 11 is likely to remain attached.

On the other hand, measures for preventing filth from adhering to the toilet bowl surface during stool have been studied. For example, as shown in FIG. 5, a large rim water discharge means for flowing wash water from the toilet rim 13 to the bowl surface 12 and an auxiliary water discharge means 14 for discharging the wash water toward the bowl or trap of the toilet bowl. A toilet (Patent Document 1) and a toilet (Patent Document 2) provided with a pre-cleaning nozzle 16 for pre-wetting a bowl surface 12 corresponding to a stool fall point with discharged water 15 as shown in FIG. 6 are proposed. ing. In the latter case, it is said that the stool residue is not generated by pre-wetting the stool falling portion of the toilet bowl with the discharge water 15 in advance by the pre-washing nozzle 16.
JP 2002-266411 A JP-A-5-1441

  However, in the conventional technology as described above, there is a problem to be improved in effectively cleaning the filth that tends to adhere to the bowl surface immediately below the butt position during stool.

  In the flush toilet in which washing water is spouted from the auxiliary water spouting means 14 toward the bowl surface 12 shown in FIG. 5, the falling sewage immediately below the buttocks position causes the upper back portion of the bowl surface 12 to be discharged by the discharged washing water. It can be pushed up by the sewage and it can happen that the filth cannot be washed away. And this flush toilet is intended to reduce the jet noise of the jet water spouting means for discharging the return water after the siphon is cut off, so that the filth that tends to remain on the bowl surface just below the hip position during stool In practice, cleaning is not recognized as a problem to be solved.

  Moreover, in the flush toilet shown in FIG. 6, even if the bowl surface 12 is previously wetted by the discharge water 15, depending on the attachment timing of the filth during stool, the bowl surface 12 may be dried and the wetting effect may be lost. Since the water flow pressure for washing cannot be expected, it is difficult to obtain a sufficient adhesion preventing effect, and there is a problem to be improved such that the discharged water 15 may be uncomfortable due to rebounding from the bowl surface.

  The present invention provides a new flush toilet which is effective in solving the conventional problems and preventing the filth attached to the toilet bowl, in particular, preventing the filth deposit immediately below the hip position from the background as described above. The challenge is to do.

  In order to solve the above-described problems, the flush toilet of the present invention is characterized by the following.

  First: A washing water discharge port for allowing washing water to flow on the bowl surface immediately below the buttocks position is disposed at the upper part of the bowl surface in front of or behind the trap inlet of the toilet bowl.

  Second: The flush toilet is a tankless toilet, and a flow path with a water storage tank and an open / close valve for flowing the wash water from the discharge port to the bowl surface is installed at the rear stage of the branch part with the rim wash water .

  According to the first aspect of the invention, since the cleaning water discharge port for flowing the cleaning water to the bowl surface just below the buttocks position is disposed at the upper part of the bowl surface in front of or behind the toilet trap inlet, Occasionally, filth that has dropped onto the bowl surface just below the buttocks position can be washed off without any residue with water flow pressure from the discharge port at the top of the bowl surface. In addition, since the discharged cleaning water flows down along the bowl surface, it does not rebound and does not cause discomfort to the user.

  Even if the depth of water just below the buttocks is shallow, no filth is left behind, and a flush toilet that does not impair the beauty even after many years of use is provided.

  According to the said 2nd invention, in addition to the effect of said invention, a water supply / drainage process can be performed efficiently.

  FIG. 1 and FIG. 2 are a perspective view and a main part sectional view showing an embodiment of the flush toilet of the present invention. In this embodiment, the butt position of the bowl surface 12 where the filth falls, that is, the region 1 directly below the butt position defined as the position of the anus or the vicinity thereof, is behind (the back side) from the trap inlet 2 of the flush toilet. It is set. The cleaning water discharge port 3 for flowing the cleaning water directly into the region 1 directly below the hip position is disposed behind the trap inlet 2 at the rear (back side) upper part of the bowl surface. In this case, the height from the region 1 directly below the hip position of the bowl surface 12 where the cleaning water discharge port 3 is disposed can be arbitrarily set. The shape and the number of the cleaning water discharge ports 1 can be arbitrarily set. The position of the washing water outlet 3 such as the height, circular shape, oval shape, etc. so that the sewage that has fallen in the region 1 directly below the hip position can be applied to the trap entrance 2 The opening shape such as the above, and the number of arrangements may be set as appropriate.

  In this embodiment, as shown in FIG. 2, it is possible to employ the same means as in the prior art in which the washing water flows down from the rim 13 of the toilet bowl. In this case, the cleaning water from the cleaning water discharge port 3 can be combined with the main cleaning water from the rim 13 to function as a side flow water. Further, in this embodiment, as shown in FIG. 2, the storage water tank 4 is installed in the control component built-in block 5 on the upper surface of the back of the flush toilet so as to supply washing water to the discharge port 3. . The washing water discharge port 3 communicates with the storage water tank 4 through a flow path 7 via an electromagnetic on-off valve 6.

  In stool cleaning, first, the electromagnetic on-off valve 6 is opened, and the cleaning water stored in the storage water tank 4 flows out from the cleaning water discharge port 3 through the flow path 7. Since the washing water discharge port 3 is disposed on the upper part of the bowl surface 12 behind the trap inlet 2, that is, in the upper back part of the region 1 directly below the buttocks position, the flushed washing water flows on the bowl surface 12. Then, it flows down toward the area 1 just below the hip position. Then, the waste water that has flowed down to the area just below the buttocks position is washed away to the trap inlet 2 without any residue. When rim cleaning is performed, the electromagnetic on-off valve 6 is then closed, cleaning water is supplied into the rim 13 through the rim water pipe, and the cleaning water flows down from the lower surface of the rim 13 to the entire bowl surface 12, The entire 12 is washed. At the same time, the stored water tank 4 is filled with cleaning water for the next cleaning.

  In the cleaning with the cleaning water stored in the storage water tank 4, the stored cleaning water can be released at a time. For this reason, a considerable amount of washing water flows down toward the filth at once. Accordingly, considerable water pressure is applied to the filth, and as a result, the filth is washed away without remaining. Of course, the washing water in this case may be discharged in several times.

  FIG. 3 is a block diagram showing an embodiment of a water supply control system in the case of a tankless toilet. The water pipe 8 is first connected to the primary side of the water supply electromagnetic valve 9, and the secondary side of the water supply electromagnetic valve 9 is divided into two and connected to the rim water pipe 10 and the inlet of the stored water tank 4. The outlet of the stored water tank 4 is connected to the washing water discharge port 3 through the electromagnetic control valve 6.

  As described above, in the tankless toilet, it is possible to effectively drain the filth due to the flow of the wash water from the wash water discharge port 3 together with the rim washing.

  In the embodiment shown in FIGS. 1 and 2, the washing water discharge port 3 is provided with a region 1 directly below the buttocks position on the bowl surface 12 at the rear (back side) of the trap inlet 2, but the toilet is designed and manufactured. In this case, the region 1 immediately below the hip position may be set on the bowl surface 12 in front of the trap inlet 2. In this case, the cleaning water discharge port 3 is disposed at an upper front portion of the bowl surface 12 from the trap inlet 2.

  Of course, it goes without saying that the present invention is not limited to the exemplification of the above embodiments, and various forms can be made in detail.

It is the perspective view which showed embodiment of the flush toilet bowl of this invention. It is principal part sectional drawing corresponding to FIG. It is the block diagram which illustrated the water supply control system of the flush toilet bowl of the present invention. It is principal part sectional drawing which illustrated the conventional flush toilet which the water depth of the area | region right under a hips position is shallow, and filth adheres. It is principal part sectional drawing which showed the conventional flush toilet which has an auxiliary discharge means. It is principal part sectional drawing which showed the conventional flush toilet which has the nozzle for pre washing | cleaning.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Area just below hips position 2 Trap inlet 3 Washing water discharge port 4 Reservoir tank 6 Electromagnetic on-off valve 7 Flow path 9 Water supply solenoid valve 10 Rim water pipe 11 Soil 12 Bowl surface

Claims (2)

  A flush toilet, wherein a flush water discharge port for flowing flush water to the bowl surface immediately below the hip position is disposed in front of or above the bowl surface of the toilet bowl.   In the tankless toilet, a water storage tank for flowing cleaning water from the cleaning water discharge port to the bowl surface and a flow path provided with an on-off valve are installed at the rear stage of the branch portion with the rim cleaning water. The flush toilet according to claim 1.

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