JP2011208416A - Flush toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact waterline straight-hydraulic flush toilet bowl equipped with a backflow preventing means.SOLUTION: The flush toilet bowl includes: a bowl part 4 having a dirt receiving surface for receiving dirt, and a rib part 6 formed above; a trap part extended continuously from a lower part of the bowl part 4 to discharge dirt; a skirt part covering the bowl part 4 and forming the exterior of the flush toilet bowl; and a water supply device 11 having the backflow preventing means 19 preventing dirt or the like from flowing back to a water pipe, and directly connected to the water pipe to supply the bowl part 4 with flushing water. The skirt part is formed with an outflow port 14a below the backflow preventing means 19 of the water supply device 11 serving as communication between the bowl part 4 and outside air and allowing sewage or the like to overflow to the outside of the flush toilet bowl when the flush toilet bowl is clogged.

Description

  The present invention relates to a flush toilet.

In the conventional flush toilet, when a bowl is filled with filth or the like, a toilet seat on which a user is seated is brought into contact with a rim that is an overflow surface from which sewage or the like overflows. In addition, the backflow prevention means provided in the flush water supply means of the direct water pressure toilet that supplies flush water directly from the water pipe was determined based on the provisions of Article 4, Paragraph 2 of the Water Supply Law Enforcement Ordinance (Hygiene The standard for preventing backflow (which regulates the hygiene of equipment) prescribes that hygiene is ensured by ensuring a predetermined distance above the rim.
On the other hand, when the bowl is clogged with filth, etc., an overflow outlet that discharges sewage is opened upward in the bowl to prevent the sewage from overflowing, and the water channel from the outlet forms an S trap. What is connected to the drain pipe of a toilet bowl via a trap and a downward drainage channel is known (see, for example, Patent Document 1).

JP-A-2005-207222

  However, in such a case, when the trap forming the S trap and the downward drainage channel are clogged with dirt, the overflow outlet provided in the bowl of the toilet bowl does not play the role of overflow. According to the standards for backflow prevention established based on Article 4, Paragraph 2 of the Enforcement Ordinance, the overflow outlet is not recognized as an overflow position when the toilet is unable to drain. Therefore, when the bowl is clogged with filth etc., the overflow position will be the top surface of the rim that comes into contact with the toilet seat, and when installing the flush water supply means of the direct water pressure toilet that supplies flush water directly from the water pipe, Since it is necessary to secure a predetermined interval above the rim, the height of the entire toilet becomes high, and there is a problem that the flush toilet cannot be made compact in the rest room space with good design.

  The present invention has been made to solve the above-mentioned problems, and the object of the present invention is to make the flush toilet in a compact and well-designed restroom space and to comply with the standards for preventing the backflow of filth and the like. A flush toilet is provided.

In order to achieve the above object, the present invention provides a bowl part having a dirt receiving surface for receiving dirt and a rim part formed above, and a trap part that continuously extends from below the bowl part and discharges dirt. And a bowl part that covers the bowl part and forms the appearance of a flush toilet, and a backflow prevention means that prevents sewage and the like from flowing back to the water pipe. In the flush toilet provided with the water supply device, the bowl portion and the outside air are communicated to the heel part below the backflow prevention means of the water supply device, and when the flush toilet is clogged, sewage etc. is flushed It is characterized by an outlet that overflows to the outside.
In the present invention configured as described above, the outlet for communicating the bowl portion and the outside air is formed in the heel portion of the flush toilet below the backflow prevention means of the water supply device, so that the water supply device is directed toward the heel portion. The toilet seat, toilet lid, and other members provided above the urinal of the flush toilet can be lowered, and the flush toilet can be made compact and well-designed in the rest room space. it can. In addition, when the flush toilet is clogged, sewage or the like reliably overflows out of the flush toilet from the outlet, so that it is possible to comply with the standards for preventing backflow of sewage and the like.

Moreover, in this invention, Preferably, a water supply apparatus is installed in the collar part below the upper end of a collar part, and the distance of the perpendicular direction of the backflow prevention means and outflow port of a water supply apparatus is 25 mm or more.
In the present invention configured as described above, members such as a toilet seat and a toilet lid provided above the buttocks of the flush toilet can be made lower, and the flush toilet can be designed with good design in the rest room space. It can look compact. In addition, it is possible to comply with the standards regarding the backflow prevention.

Further, in the present invention, preferably, the drainage amount per unit time of the outlet is larger than the maximum value of the water supply amount per unit time of the water supply device.
In this invention comprised in this way, when a flush toilet is clogged, sewage etc. can overflow more reliably out of a flush toilet.

Moreover, in this invention, Preferably, an outflow port is provided in the rear side wall of a collar part, and the outflow port is connected via the bowl part and the drainage flow path.
In the present invention configured as described above, since the outflow port is provided on the rear side wall of the buttock, the user does not visually recognize the outflow port, so that the appearance design of the flush toilet is lowered. The flush toilet can be made compact in the rest room space with good design. Moreover, since it communicates with the outside air by the outflow port through the drainage channel, it is possible to prevent filth and the like from splashing from the outflow port to the outside during use of the toilet.

Further, in the present invention, preferably, a plurality of drain flow paths are formed and a single outlet is formed.
In the present invention configured as described above, since a plurality of drainage channels are formed, even if one drainage channel is clogged with dirt or the like, the other drainage channel should be used. Can do. In addition, since the outlet is formed as a single unit and the opening cross-sectional area that can discharge overflow water can be maintained, sewage overflows more reliably outside the flush toilet. Comply with standards for backflow prevention.

In the present invention, preferably, the vertical height from the floor of the bottom surface of the drainage channel is the smallest at the inlet of the drainage channel in contact with the bowl portion.
In the present invention configured as described above, when the sewage scatters and enters the inflow port of the drainage channel, the slight sewage can be returned to the bowl portion without dripping from the outflow port to the floor surface.

  ADVANTAGE OF THE INVENTION According to this invention, while showing a flush toilet bowl compactly with a good design in rest room space, the flush toilet bowl based on the standard regarding backflow prevention, such as filth, can be provided.

It is a schematic side sectional view showing a flush toilet according to an embodiment of the present invention. It is a schematic plane sectional view showing a flush toilet according to an embodiment of the present invention. It is an AA schematic sectional drawing of the flush toilet bowl by embodiment of this invention of FIG. It is a schematic plane sectional view showing a flush toilet according to another embodiment of the present invention. It is a schematic side sectional view showing a flush toilet according to another embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic side sectional view showing a flush toilet according to an embodiment of the present invention, and FIG. 2 is a schematic plan sectional view showing a flush toilet 3 according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of the flush toilet according to the embodiment of the present invention shown in FIG.
The flush toilet 3 is made of earthenware, resin, or a hybrid of resin and earthenware. A resin toilet seat 2 and a toilet lid 1 are pivotable in the vertical direction above the flush toilet 3. It is attached. The flush toilet 3 has a backflow prevention means 19 for preventing sewage and the like from flowing back to a water pipe (not shown), and includes a water supply device 11 that is directly connected to the water pipe and supplies the wash water to the bowl portion 4. ing. The toilet seat 2 on which the user is seated is configured to be fitted inside the heel part 5 of the flush toilet 3 when lowered in use, and the flush toilet 3 is viewed from the side with the toilet lid 1 closed. When you do, the toilet seat 2 is hidden from view. As a result, the flush toilet 3 and the toilet lid 1 have a sense of unity, improving the design. The position of the rim portion 6 will be described later. Moreover, when the flush toilet 3 of the present invention is installed in the rest room space, the water supply device 11 described later is installed in the heel part 5 of the flush toilet 3 and cannot be seen from the outer shell. From the design, it has good design and looks compact.

  In FIG. 1, while restraining the height position of the toilet seat 2 and the toilet lid 1 of the flush toilet 3 in this embodiment with respect to the height of the toilet bowl, the provisions of Article 4 Paragraph 2 of the Water Supply Law Enforcement Ordinance The structure that conforms to the standards for preventing the backflow of sewage, etc., which is defined based on (defines the hygiene of sanitary equipment) is described below.

  The flush toilet 3 is formed above the bowl, a bowl part 4 for excretion by the user, a trap part 7 for forming accumulated water in the bowl part 4, a bowl part 5 covering the bowl part 4, and the bowl part 4. The rim 6 is in contact with the toilet seat 2, and the water supply device 11 incorporates a backflow prevention means 19 for supplying cleaning water to the bowl 4. The excrement is discharged from the bowl portion 4 to the trap portion 7 toward the drain pipe of the building (not shown) by the water supply by the water supply device 11. Specifically, the rim nozzle 9 first cleans the bowl portion 4, then the jet nozzle 10 discharges water into the trap portion 7 to activate the siphon action and direct the accumulated water 12 to the drainage pipe of the building, After discharging through the drain socket 8, water is again supplied from the rim nozzle 9 to the bowl portion 4 to restore the sealed water in the trap portion 7.

  FIG. 1 shows an embodiment of a siphon-jet flush toilet. However, the present invention is not limited to this embodiment, and a siphon-type flush toilet that does not cause jet water discharge even in a wash-off flush toilet that does not generate siphon action. Either a toilet or a flush toilet to which the present invention is applied may be used. In the present embodiment, a first surface 15 indicating the upper end of the flange portion 5, a second surface 16 indicating the rim portion 6, a third surface 17 that overflows sewage when the trap portion 7 becomes unable to drain, and a water supply device A fourth surface 18 indicating the position of the 11 backflow prevention means 19 is formed. In order to comply with the standards for the prevention of backflow established based on the provisions of Article 4, Paragraph 2 of the Water Supply Law Enforcement Ordinance, the fourth surface 18 extends vertically from the third surface 17. Although a space of 25 mm or more must be secured, the height of the water supply device 11 can be suppressed by making the third surface 17 lower than the first surface 15, and as a result, the height of the toilet seat 2 and the toilet lid 1. It becomes possible to suppress the position with respect to the height of the heel part 5 of the toilet bowl.

  The positional relationship between the first surface 15 to the fourth surface 18 will be described in detail. The first surface 15 is higher than any of the other second surface 16, third surface 17, and fourth surface 18, and the height position of the toilet seat 2 and the toilet lid 1 is set to the height of the heel part 5 of the toilet bowl. In contrast, it is most effective in suppressing the level difference generated. Considering that the fourth surface 18 is positioned at a height of less than 25 mm in the vertical direction from the first surface 15, a backflow prevention space of 25 mm or more is formed between the third surface 17 and the fourth surface 18. It only has to be.

  When the trap portion 7 becomes unable to drain, in order for the third surface 17 to function as an overflow surface of the toilet bowl, the water that overflows and drains from the third surface 17 needs to be more than the water supplied by the water supply device 11. There is. Since the water supply capacity varies depending on the type of toilet, the setting of the drainage passage area that defines the drainage capacity may be set in accordance with the design of each part.

2 and 3, the configuration of the drainage channel of the present invention will be described in detail.
In the embodiment of FIG. 2, the flush toilet 3 forms the drainage flow path 20 connected to the inlets 13 a and 13 b of the bowl part 4 for the drainage path 20 when the trap part 7 becomes unable to drain, An outlet 14 is formed toward the rear of the part 5. Although there are a plurality of inlets 13a and 13b on the bowl part 4 side, by using one outlet 14a on the side of the flange part 5, the outlet opening cross-sectional area that can discharge overflow water can be increased. it can.

  By providing the water supply device 11 in the vicinity of the outlet 14 a of the drainage flow path 20, when the trap 7 becomes unable to drain, the fourth surface 18 indicates the level of the overflow water and the position of the backflow prevention means 19 of the water supply device 11. Consideration is made so that it is easy to visually confirm the positional relationship. Further, the space in the flange 5 other than the drainage flow path 20 behind the bowl portion 4 is effectively utilized, and the water supply device 11 is accommodated in the flush toilet 3.

  As shown in FIG. 3, the drainage channel 20 has an upward slope from the inlet 13 to the outlet 14, and when the trap 7 becomes temporarily unable to drain and then disappears immediately thereafter, the drainage channel 20 once The overflow water that has entered can quickly flow into the bowl portion 4 side. After the clogging is eliminated, the outflow to the outside does not continue, and consideration is given to return quickly. Further, when the sewage scatters and enters the inflow ports 13 a and 13 b of the drainage flow path 20, the slight sewage can be returned into the bowl portion 4 without dripping from the outflow port 14 onto the floor surface.

  FIG. 4 is a schematic plan sectional view showing a flush toilet according to another embodiment of the present invention, and FIG. 5 is a schematic side sectional view showing a flush toilet according to another embodiment of the present invention. The difference from the above-described embodiment is that there are a plurality of outlets.

The drainage flow path 20 communicates with the two inlets 13a and 13b on the bowl side, and with the plurality of outlets 14b and 14c on the collar side. With such a configuration, even if filth etc. becomes clogged at one outlet, one outlet can be used, so that sewage overflows more reliably outside the flush toilet. It is possible to comply with standards for preventing backflow.
According to FIG. 5, the vertical distance between the first surface 15 and the second surface 16 is greater than the thickness of the toilet seat 2 with respect to the positions of the first surface 15 to the fourth surface 18. When the four surfaces 18 are lower than the first surface 15, it is possible to realize a high design appearance of only the collar portion 5 and the toilet lid 1.

  In the above-mentioned embodiment, although the flush toilet provided with two inflow ports, two drainage channels, and one or two outflow ports was shown, the present invention is not limited to such a configuration, As long as the number has the above-described drainage capacity, it is possible to adopt a deformed form regardless of the form.

  According to the above-mentioned embodiment, the bowl part 4 which has the waste receiving surface which receives a waste, and the rim | limb part 6 formed upwards, and the trap part 7 extended continuously from the downward direction of the bowl part 4, and discharging | emitting a waste. And a bowl portion 4 that has a bowl portion 4 that covers the bowl portion 4 and forms the appearance of the flush toilet 3, and a backflow prevention means 19 that prevents backflow of sewage and the like to the water pipe. In the flush toilet 3 provided with a water supply device 11 for supplying wash water to the bowl 5, the bowl portion 4 communicates with the outside air below the backflow prevention means 19 of the water supply device 11, and the flush toilet is An outflow port 14 through which sewage overflows out of the flush toilet 3 when 3 is clogged is formed. In this embodiment configured in this way, by forming the outlet 14 for communicating the bowl portion 4 and the outside air in the heel portion 5 of the flush toilet 3 below the backflow prevention means 19 of the water supply device 11, It becomes possible to bring the water supply device 11 closer to the heel part 5, members such as the toilet seat 2 and the toilet lid 1 provided above the heel part 5 of the flush toilet 3 can be lowered, and the flush toilet 3 In the rest room space, it can look compact with good design. In addition, when the flush toilet 3 is clogged, sewage or the like reliably overflows from the outlet 14 to the outside of the flush urinal 3, so that it is possible to comply with the standards for preventing the backflow of sewage and the like.

  According to the above-mentioned embodiment, Preferably, the water supply apparatus 11 is installed in the collar part 5 below the upper end of the collar part 5, and the distance of the perpendicular direction of the backflow prevention means 19 and the outflow port 14 of the water supply apparatus 11 is 25 mm or more. In the present embodiment configured as described above, members such as the toilet seat 2 and the toilet lid 1 provided above the heel part 5 of the flush toilet 3 can be lowered, and the flush toilet 3 is placed in the rest room space. It is possible to make it look compact with good design. In addition, it is possible to comply with the standards regarding the backflow prevention.

  According to the above-described embodiment, preferably, the drainage amount per unit time of the outlet 14 is larger than the maximum value of the water supply amount per unit time of the water supply device 11. In the present embodiment configured as described above, when the flush toilet 3 is clogged, sewage or the like can overflow more reliably out of the flush toilet 3.

  According to the above-mentioned embodiment, Preferably, the outflow port 14 is provided in the rear side wall of the collar part 5, and the outflow port 14 is connected via the bowl part 4 and the drainage flow path 20. FIG. In the present embodiment configured as described above, since the outflow port 14 is provided on the rear side wall of the flange portion 5, the user does not visually recognize the outflow port 14, and thus the appearance of the flush toilet 3 The design of the flush toilet 3 can be made compact in the rest room space with good design without reducing the design. In addition, since the outlet 14 communicates with the outside air via the drainage channel 20, it is possible to prevent filth and the like from splashing from the outlet to the outside when using the toilet.

  According to the above-mentioned embodiment, Preferably, the drain flow path 20 is formed with two or more, and the outflow port 14 is formed with one. In the present embodiment configured as described above, since a plurality of drainage channels 20 are formed, even if one drainage channel 20 is clogged with dirt or the like, the other drainage channel 20 is not provided. Can be used. Moreover, since the outflow port 14 is formed with one and can maintain the opening cross-sectional area which can discharge | emit overflow water, since sewage overflows more reliably outside the flush toilet 3, It is possible to comply with the standards for backflow prevention such as.

  According to the above-described embodiment, preferably, the height in the vertical direction from the floor on the bottom surface of the drainage channel 20 is the minimum at the inlet 13 of the drainage channel 20 in contact with the bowl portion 4. In this embodiment configured as described above, when sewage splashes and enters the inflow port 13 of the drainage flow path, the slight sewage does not drip from the outflow port 14 to the floor surface and enters the bowl portion 4. Can be returned.

DESCRIPTION OF SYMBOLS 1 ... Toilet lid 2 ... Toilet seat 3 ... Flush toilet 4 ... Bowl part 5 ... Gutter part 6 ... Rim part 7 ... Trap part 8 ... Drain socket 9 ... Rim nozzle 10 ... Zette nozzle 11 ... Water supply device 12 ... Water storage 13 ... Flow Inlet 14 ... Outlet 15 ... First surface 16 ... Second surface 17 ... Third surface 18 ... Fourth surface 19 ... Backflow prevention means 20 ... Drainage channel

Claims (6)

A bowl portion having a filth receiving surface for receiving filth and a rim portion formed above;
A trap portion that continuously extends from below the bowl portion and discharges filth;
A heel that covers the bowl and forms the appearance of a flush toilet;
In a flush toilet comprising a backflow prevention means for preventing sewage from flowing back to the water pipe and a water supply device directly connected to the water pipe and supplying wash water to the bowl portion,
The bowl portion is formed with an outlet through which the bowl portion and the outside air communicate with each other below the backflow prevention means of the water supply device, and when the flush toilet is clogged, sewage overflows outside the flush toilet. A flush toilet, characterized by The water supply device is installed in the collar part below the upper end of the collar part,
The flush toilet according to claim 1, wherein the vertical distance between the backflow prevention means of the water supply device and the outlet is 25 mm or more.   The flush toilet according to claim 1 or 2, wherein a drainage amount per unit time of the outlet is larger than a maximum value of a water supply amount per unit time of the water supply device.   The said outflow port is provided in the rear side wall of the said collar part, and the said outflow port is connected via the said bowl part and the drainage flow path, The Claim 1 characterized by the above-mentioned. Flush toilet.   The flush toilet according to claim 4, wherein a plurality of the drainage channels are formed and one outlet is formed.   The vertical height from the floor of the bottom surface of the drainage channel is such that the inlet of the drainage channel in contact with the bowl portion is minimized. Flush toilet.