JP5257846B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet, and more particularly, to a flush toilet that is washed with washing water and discharges filth.

Conventionally, there is a warm water washing toilet seat as one of the multifunctional toilet seats of flush toilets which are washed with washing water and discharge filth. This warm water washing toilet seat is provided with a local washing apparatus capable of washing the local area with warm water after the toilet as a main function.
In a flush toilet equipped with a conventional local cleaning device, for example, as described in Patent Document 1, the local cleaning device is installed on the rear upper surface of the toilet body, and the height of this local cleaning device is In order to make it low, there is a type in which a concave groove is provided on the upper surface of the rear part of the toilet body, and a nozzle that injects the nozzle for injecting cleaning water is accommodated in the concave groove.

However, in the conventional flush toilet described in Patent Document 1 described above, since the nozzle of the local cleaning device is exposed in the bowl portion of the toilet body, the nozzle is likely to become dirty due to splashing of sewage, etc. There is also a problem on the top and aesthetics.
Therefore, in order to solve such a problem, for example, in the conventional flush toilet described in Patent Document 2, an opening / closing lid is provided at the front end of the nozzle of the local cleaning device, and this opening / closing lid is used for toilet cleaning. By closing the front end of the inner nozzle, the nozzle is prevented from being exposed and the nozzle is prevented from being contaminated due to splashing of sewage.

No. 2-313589 JP 2008-95460 A

  However, in the conventional flush toilet described in Patent Document 2 described above, the open / close lid is disposed above the rim conduit formed in the upper edge of the bowl portion through which flush water flows when flushing the toilet. Therefore, even if sewage or the like has landed on the surface of the open / close lid, the wash water from the toilet bowl cannot reach the open / close lid and be washed away, so only the open / close lid must be cleaned separately. There is a problem that it requires a hand gap.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and the dirt that has landed on the opening / closing lid of the nozzle of the local cleaning device can be washed away with the water flow of cleaning water during toilet cleaning. The purpose is to provide a flush toilet.

In order to achieve the above object, the present invention is a flush toilet that is washed with washing water and discharges filth, and is provided with a filth receiving surface formed in a bowl shape and an upper edge of the filth receiving surface. And a rim portion formed with a first water discharge portion and a rim water conduit that swirls the wash water discharged from the first water discharge portion, and a rear portion of the rim portion of the bowl portion. A local cleaning part provided with a nozzle part which is provided on the side and has a nozzle part for propelling into the bowl part and injecting cleaning water in a predetermined direction, and a rim water conduit at the rear end part of the rim part of the bowl part. A nozzle opening through which the nozzle part of the cleaning part can pass, and a lid member attached to the nozzle opening so as to be openable and closable so as to be positioned in the rim conduit at the rear end of the rim part of the bowl part It is characterized by having.
In the present invention configured as described above, the lid member attached to the nozzle opening so as to be openable and closable is located in the rim conduit at the rear end portion of the rim portion of the bowl portion. The sewed water can be washed away with the water flow of the wash water that is discharged from the first water discharge portion of the rim portion and swirls around the rim conduit at the time of toilet cleaning. Moreover, the non-washing | cleaning area | region in a bowl part can be reduced as much as possible by spreading and flushing the washing water at the time of toilet bowl washing also to the cover member attached to the nozzle opening part.

In the present invention, preferably, the rim portion of the bowl portion forms a flat surface whose rear end portion is substantially vertical, the nozzle opening is formed on the flat surface, and the lid in a state where the nozzle opening is closed. The front surface of the member is configured to be substantially flush with the flat surface.
In the present invention configured as above, the front surface of the lid member with the nozzle opening closed is substantially flush with the substantially vertical flat surface at the rear end of the rim portion of the bowl portion. The sewage that has landed on the bowl can be reliably washed away with washing water that flows through the rim conduit at the rear end of the rim of the bowl when washing the toilet bowl.

In the present invention, preferably, the bowl portion further includes a second water discharge portion for discharging water toward the lid member in the same swirling direction as the swirling flow of the wash water discharged from the first water discharge portion. .
In the present invention configured as described above, since the bowl portion includes the second water discharge portion, the rear end portion of the rim portion of the bowl portion forms a substantially vertical flat surface. Without impairing the cleaning performance, the sewage that has landed on the lid member can be reliably washed away with the cleaning water discharged from the second water discharger during toilet flushing.

  According to the flush toilet of the present invention, dirt that has landed on the opening / closing lid of the nozzle of the local washing apparatus can be washed away with the washing water flow during toilet flushing.

It is sectional drawing of the flush toilet bowl by embodiment of this invention. 1 is a front view of a flush toilet according to an embodiment of the present invention. It is the disassembled perspective view which looked at the flush toilet by embodiment of this invention from diagonally upward. It is the disassembled perspective view which looked at the flush toilet by embodiment of this invention from diagonally downward. It is the perspective view which looked at the holding plate of the toilet seat unit of the flush toilet bowl by embodiment of this invention from diagonally downward. It is the elements on larger scale which expanded the part of the holding plate of the toilet seat unit of the flush toilet bowl shown in FIG. 1, and the part washing | cleaning apparatus. It is an enlarged front view of the part of the shutter in the state which incorporated the holding plate of the toilet seat unit of the flush toilet bowl by the embodiment of the present invention in the predetermined position of the upper surface of the toilet bowl body. It is VIII-VIII sectional drawing of FIG. It is the elements on larger scale similar to FIG. 6 which expanded the part of the local cleaning apparatus at the time of local cleaning in the flush toilet bowl by embodiment of this invention.

Hereinafter, a flush toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a sectional view of a flush toilet according to an embodiment of the present invention, and FIG. 2 is a front view of the flush toilet according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of the flush toilet according to the embodiment of the present invention as viewed obliquely from above, and FIG. 4 is an exploded perspective view of the flush toilet according to the embodiment of the present invention as viewed obliquely from below.
First, as shown in FIGS. 1-4, the code | symbol 1 shows the flush toilet bowl, and has the toilet bowl main body 1a which consists of pottery etc., and the toilet seat unit 1b installed in the upper part of this toilet bowl main body 1a. The flush toilet 1 according to the present embodiment is configured as a wall-mounted toilet.
In addition, in this embodiment, although the example of the wall-mounted toilet is shown, it is not limited to such a toilet, For example, a floor-standing toilet may be used.

  The toilet main body 1a of the flush toilet 1 is connected to an external water supply source (not shown) such as a water supply or a water tank formed at the upper part of the bowl part 2 formed on the front side of the upper part and the rear side. The water channel 4 is provided, and below this water channel 4 is communicated with the bottom of the bowl part 2 so as to discharge the filth in the bowl part 2 and defines an initial stored water level L0 of the bowl part 2. A drain trap pipe 6 is formed.

The bowl portion 2 includes a rim portion 2a that forms an upper edge thereof, and a filth receiving surface 2b that is formed in a bowl shape below the rim portion 2a. In the rim portion 2a, a first water discharge port 2c which is a first water discharge portion communicating with the water conduit 4 is formed on the inner wall surface from the rear left side of the rim portion 2a, and the first water discharge port 2c passes through the water conduit 4. A rim conduit 2d for turning the inner wall surface from the upper edge of the filth receiving surface 2b to the lower side thereof is formed with the cleaning water W1 discharged from the sewage receiving surface 2b. The washing water W1 discharged from the first water discharge port 2c falls downward while turning the inner wall surface from the upper edge of the filth receiving surface 2b to the lower side thereof, thereby cleaning the filth receiving surface 2b.
Here, the “rim water guide channel 2 d” for turning the inner wall surface of the waste water receiving surface 2 b from the upper edge of the filth receiving surface 2 b and swiveling the cleaning water W 1 discharged from the first water outlet 2 c is a concave groove. It does not show only the location, but it means that the location where the cleaning water swirls and passes even on a substantially flat surface is included.

  Moreover, in the rear end part of the rim | limb part 2a of the bowl part 2, the 2nd water discharge port 2e which is a 2nd water discharge part is formed in the right side corner vicinity. The second water outlet 2e communicates with the water conduit 4 and is located at substantially the same height as the first water outlet 2c. The wash water W2 discharged from the second water outlet 2e is discharged from the first water outlet 2c. A nozzle opening 2j (details will be described later) formed in the rim water conduit 2d at the rear end of the rim 2a and the nozzle opening 2j in the same swirling direction as the swirling flow of the discharged wash water W1. After flowing on the front surface 14h of a shutter 14c (details will be described later), which is a lid member attached so as to be openable and closable, it merges with the swirling flow of the cleaning water W1.

Further, at the rear end portion of the rim portion 2a of the bowl portion 2, a substantially vertical flat surface 2f is formed from the nozzle opening portion 2j to the surface extending in the lateral direction in the vicinity of the left and right corner portions. The area where the flat surface 2f is formed is arranged at a height position substantially the same as the height positions of the first water outlet 2c and the second water outlet 2e.
Here, the “substantially vertical flat surface 2 f” forming the rear end portion of the rim portion 2 a is about 10 degrees in the front-rear direction from the upper end of the rear end portion of the rim portion 2 a toward the filth receiving surface 2 b side. It is meant to include a flat surface inclined to the range.
That is, the surface forming the rear end portion of the rim portion 2a may be inclined when the bowl portion 2 is viewed from above as long as dirt due to dirty water can be visually observed.

Moreover, the 3rd water discharge port 2g which is a 3rd water discharging part effective in discharge | emission of a floating filth is formed in the middle of the filth receiving surface 2b of the bowl part 2. As shown in FIG. The third water discharge port 2g forms an elongated slit-shaped opening, communicates with the water conduit 4, and the cleaning water W3 discharged downward from the third water discharge port 2g during cleaning is below the filth receiving surface 2b. It collides with the side step portion 2h, soars upward, flows downward again, and goes toward the bottom of the bowl portion 2 as it is.
In addition, about the 3rd water discharge port 2g mentioned above, it is not necessary to provide.

Next, the toilet seat unit 1 b of the flush toilet 1 includes a toilet seat 8, a toilet lid 10, a local cleaning device 12, and a holding plate 14.
FIG. 5 is a perspective view of the holding plate of the toilet seat unit of the flush toilet according to the present embodiment as seen obliquely from below. FIG. 6 is a partially enlarged cross-sectional view in which the holding plate of the toilet seat unit and the local cleaning device of the flush toilet according to the present embodiment shown in FIG. 1 are enlarged. Further, FIG. 7 is an enlarged front view of the shutter portion in a state where the holding plate of the toilet seat unit of the flush toilet according to the present embodiment is incorporated at a predetermined position on the upper surface of the toilet body, and FIG. It is -VIII sectional drawing.

As shown in FIGS. 1 to 8, the holding plate 14 is a holding member that holds the local cleaning device 12 while being incorporated on the upper surface of the toilet body 1 a on the rear side of the rim portion 2 a of the bowl portion 2.
The local cleaning device 12 includes a nozzle portion 12a in which a plurality of elongated cylindrical members are provided so as to be extendable in a nested manner in the axial direction. In this embodiment, the nozzle portion 12a of the local cleaning device 12 is provided with three cylindrical members stacked in an nested manner as an example. However, when performing local cleaning, the nozzle portion 12a extends forward, The tip end (injection portion) 12b is propelled toward the space in the bowl portion 2 ahead. And about the nozzle part 12a of this extended state, the sub tank 12c in which some wash water of external water supply sources (not shown), such as a water supply or a water supply tank, was provided for backflow prevention, pump (not shown) After passing through a heat exchanger (not shown), the hot water heated to an appropriate temperature is ejected from the tip (injection unit) 12b in a predetermined direction as washing water.

The holding plate 14 is a lid member that can be opened and closed at a nozzle storage portion 14a that stores and holds the nozzle portion 12a of the local cleaning device 12, and an opening portion 14b formed at the front end portion of the nozzle storage portion 14a. And a certain shutter 14c.
Further, a notch 14d is formed on the lower end portion of the front end portion (opening portion 14b) of the nozzle storage portion 14a from the front end to the rear side, and even when the shutter 14c closes the opening portion 14b, A portion corresponding to the notch 14d is opened. About this notch 14d, the water after cleaning when the front end (injection unit) 12b itself of the nozzle portion 12a is self-cleaned in the nozzle storage portion 14a before and after the local cleaning is outside the nozzle storage portion 14a. It functions as a drain hole drained to the (bowl part 2 side).

The shutter 14c includes a rotating portion 14e including a rotating shaft whose upper end is hinged to the upper end of the opening 14b of the nozzle housing portion 14a. When performing local cleaning, when the nozzle portion 12a of the local cleaning device 12 extends forward and pushes the rear end portion 14f of the shutter 14c forward, the rear end portion 14f of the shutter 14c becomes the opening 14b of the nozzle storage portion 14a. The shutter 14c rotates around the rotating portion 14e from the closed position where it abuts on the edge portion to open the opening 14b.
Further, the rotating portion 14e of the shutter 14c is provided with a torsion spring 14g which is an urging means for urging the shutter 14c toward the opening 14b.

  Moreover, as shown in FIG. 3, the recessed part 2i by which the nozzle accommodating part 14a is fitted by the rear side of the rim | limb part 2a of the bowl part 2 in the upper surface of the toilet bowl main body 1a when the holding plate 14 is assembled is below. A nozzle opening 2j is formed at the front end of the recess 2i so as to allow passage of the nozzle 12a of the local cleaning device 12 during local cleaning.

Further, as shown in FIGS. 7 and 8, the nozzle opening 2j is formed on the flat surface 2f of the rim 2a of the bowl 2 of the toilet body 1a, and is a recess recessed rearward along the peripheral edge thereof. A front step 2l and a rear step 2m forming 2k are provided.
When the rear end portion 14f of the shutter 14c contacts the edge of the opening 14b in the nozzle storage portion 14a of the holding plate 14 and is in the closed position, the front surface 14h of the shutter 14c is the rear end portion of the rim portion 2a of the bowl portion 2. Is substantially flush with the flat surface 2f.

A packing 14j is attached along the outer peripheral edge 14i of the shutter 14c. When the shutter 14c is in the closed position, the packing 14j is in close contact with the recess 2k of the nozzle opening 2j on the rim 2a side of the bowl 2. The cleaning water W1 and the cleaning water W2 flowing along the flat surface 2f at the rear end of the rim portion 2a cannot enter the nozzle storage portion 14a from the nozzle opening 2j. Yes.
The packing 14j has a slight gap between the lower end of the outer peripheral edge 14i of the shutter 14c and the recess 2k of the nozzle opening 2j by cutting off a part of the lower end of the packing 14j. After self-cleaning of the nozzle part 12a, the water drained from the notch 14d of the nozzle storage part 14a on the holding plate 14 side may be allowed to flow into the bowl part 2.

Next, the operation (operation) of the flush toilet according to the embodiment of the present invention will be described.
Here, FIG. 9 is a partially enlarged cross-sectional view similar to FIG. 6 in which the portion of the local cleaning device during local cleaning in the flush toilet according to the present embodiment is enlarged.
After the user's stool, when the local cleaning by the local cleaning device 12 is started, first, as shown in FIG. 6, with the shutter 14c in the closed position, the tip of the nozzle portion 12a in the nozzle storage portion 14a. The part (injection part) 12b itself is self-cleaned for a predetermined time. At this time, the rear end portion 14f of the shutter 14c is in contact with the edge portion of the opening portion 14b in the nozzle accommodating portion 14a of the holding plate 14, and the front surface 14h of the shutter 14c is the rear end portion of the rim portion 2a of the bowl portion 2. It is substantially flush with the flat surface 2f at the portion.
Further, the water after the cleaning when the self-cleaning is performed passes through the notch 14d at the lower end of the front end (opening 14b) of the nozzle storage portion 14a, and a slight gap between the shutter 14c and the nozzle opening 2j. Oozes out and flows down into the bowl 2.

When the self-cleaning of the tip portion (injection portion) 12b of the nozzle portion 12a is completed, the three cylindrical members provided so as to be nested in the nozzle portion 12a extend forward.
And the front-end | tip part (injection part) 12b of the nozzle part 12a contacts the rear-end part 14f of the shutter 14c, pushes it forward, rotates the shutter 14c ahead centering | focusing on the rotation part 14e, and opens the opening part 14b. While opening, the front-end | tip part (injection part) 12b of the nozzle part 12a is propelled toward the space in the front bowl part 2, and stops at the predetermined position of the space in the bowl part 2 (refer FIG. 9).

The nozzle part 12a stopped at a predetermined position in the space in the bowl part 2 injects hot water W4 supplied from the sub tank 12c from its tip part (injection part) 12b in a predetermined direction (see FIG. 9).
After ejection for a predetermined time, when the nozzle portion 12a is retracted backward and the tip portion (injection portion) 12b is retracted from the opening portion 14b, the shutter 14c closes the opening portion 14b by the biasing force of the torsion spring 14g.
When the nozzle part 12a returns to the original position in the nozzle storage part 14a, the tip part (injection part) 12b itself of the nozzle part 12a itself is again self-cleaned for a predetermined time with the shutter 14c in the closed position. All the cleaning steps are completed.

  Next, when the cleaning of the bowl portion 2 is started, the first water outlet 2c, the second water outlet 2e, and the first water outlet 2c through the water conduit 4 from an external water supply source (not shown) such as a water supply or a water tank. Water is discharged into the bowl portion 2 from each of the three water discharge ports 2g.

  Wash water W1 discharged from the first water outlet 2c at the rear left side of the bowl part 2 is directed to the front part of the bowl part 2 along the inner wall surface (rim water conduit 2d) of the rim part 2a, and further to the rim part 2a. It passes through the front inner wall surface and flows so as to turn to the right rear part of the rim part 2a (rim water guide path 2d) of the bowl part 2. Then, from the right corner portion at the rear end portion of the rim portion 2a, it passes through the flat surface 2f and the front surface 14h of the closed shutter 14c and turns through the right corner portion at the rear end portion of the rim portion 2a. It flows inward toward the filth receiving surface 2b. Thereafter, the cleaning water W1 reaches the bottom of the bowl portion 2 (dirt receiving surface 2b) in a generally spiral manner. The filth receiving surface 2b of the bowl portion 2 is cleaned by the spiral flow of the cleaning water.

  Further, the cleaning water W2 discharged from the second water outlet 2e near the right corner at the rear end of the rim 2a of the bowl portion 2 is the same as the swirling flow of the cleaning water W1 discharged from the first water outlet 2c. , And flows toward the front surface 14h of the shutter 14c, merges with the swirling flow of the cleaning water W1, swirls in the bowl portion 2, and reaches the bottom of the bowl portion 2 (dirt receiving surface 2b). .

  Further, the wash water W3 spouted downward from the third spout 2g collides with the lower step portion 2h of the filth receiving surface 2b, rises upward, flows down again, and the bowl portion 2 (soil) It goes to the bottom of the receiving surface 2b).

  Wash water that has been discharged into the bowl portion 2 from each of the first water discharge port 2c, the second water discharge port 2e, and the third water discharge port 2g, and has reached the bottom of the bowl portion 2 (soil receiving surface 2b), The filth in the bowl part 2 is drawn to the inlet part of the trap pipe 4 and effectively discharged to the outlet part on the rear side.

  According to the flush toilet 1 according to the above-described embodiment of the present invention, the shutter 14c attached to the nozzle opening 2j of the rim 2a of the bowl 2 so as to be openable and closable is the rim conduit 2d at the rear end of the rim 2a. Therefore, the sewage that has landed on the shutter 14c can be washed away by the water flow of the wash water W1 that is discharged from the first water discharge port 2c of the rim portion 2a and swirls around the rim conduit 2d during toilet cleaning. . In addition, the non-cleaning area in the bowl part 2 can be reduced as much as possible by spreading the flushing water W1 for cleaning the toilet bowl to the shutter 14c attached to the nozzle opening 2j.

Further, according to the flush toilet 1 according to the present embodiment, the front surface 14h of the shutter 14c in a state in which the nozzle opening 2j is closed is substantially flat with the substantially vertical flat surface 2f at the rear end portion of the rim portion 2a of the bowl portion 2. Therefore, the sewage that has landed on the front surface 14h of the shutter 14c can be reliably washed away with the washing waters W1 and W2 flowing through the rim conduit 2d at the rear end portion of the rim portion 2a of the bowl portion 2 when washing the toilet bowl.
Furthermore, since the rear end portion of the rim portion 2a is a flat surface 2f, it is not necessary to design the shutter 14c to be curved in accordance with the shape of the curved portion of the bowl portion 2. It becomes easy to provide at the rear end of the rim 2a.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the shutter 14c has the same swirling direction as the swirling flow of the wash water W1 discharged from the first water discharge port 2c at the rear end portion of the rim portion 2a of the bowl portion 2 and the shutter 14c. 2e, the rear end of the rim portion 2a of the bowl portion 2 forms a substantially vertical flat surface 2f without impairing the cleaning performance. The sewage that has landed on the front surface 14h of the shutter 14c can be reliably washed away with the wash water W2 discharged from the second water discharge port 2e.

Furthermore, according to the flush toilet 1 according to the present embodiment, the nozzle housing portion of the holding plate 14 is formed by nesting three cylindrical members so as to extend in the axial direction in the nozzle portion 12a of the local cleaning device 12. Since it can provide in 14a, the length of the front-back direction of the nozzle accommodating part 14a can be shortened. As a result, the position of the shutter 14c located on the front surface of the nozzle housing portion 14a can be arranged more rearward, and the flat surface 2f of the rim portion 2a and the front surface 14h of the shutter 14c can be easily made flush. Can do.
In addition, since the position of the flat surface 2f of the rim portion 2a can be arranged further rearward, the flat surface 2f of the rim portion 2a is positioned in the front, so that the opening of the bowl portion 2 is reduced. No longer.

DESCRIPTION OF SYMBOLS 1 Flush toilet 1a Toilet body 1b Toilet seat unit 2 Bowl part 2a Rim part 2b Soil receiving surface 2c 1st water outlet 2d Rim water conduit 2e 2nd water outlet 2f Flat surface 2g 3rd water outlet 2h Lower step part 2i Concave part 2j Nozzle opening portion 2k Concavity 4 Water conduit 6 Drain trap conduit 8 Toilet seat 10 Toilet lid 12 Local cleaning device 12a Nozzle portion 12b Injecting portion 12c Sub tank 14 Holding plate 14a Nozzle housing portion 14b Opening portion 14c Shutter 14d Notch 14e Rotating portion 14f Rear end of shutter 14g Torsion spring 14h Front of shutter 14i Outer peripheral edge of shutter 14j Packing

Claims (3)

A flush toilet that is washed with washing water and discharges filth,
A sewage receiving surface formed in a bowl shape, and a first water discharge portion and a rim water conduit that swirls the wash water discharged from the first water discharge portion are formed at the upper edge of the filth receiving surface. A bowl portion provided with a rim portion,
A local cleaning section provided on the rear side of the rim section of the bowl section, and having a nozzle section for propelling into the bowl section and spraying cleaning water in a predetermined direction;
A nozzle opening formed in the rim water conduit at the rear end of the rim portion of the bowl portion, through which the nozzle portion of the local cleaning portion can pass;
A lid member attached to the nozzle opening so as to be openable and closable so as to be located in the rim water conduit at the rear end of the rim portion of the bowl portion;
A flush toilet characterized by having.   The rim portion of the bowl portion forms a flat surface whose rear end portion is substantially vertical, the nozzle opening is formed on the flat surface, and the front surface of the lid member in a state where the nozzle opening is closed is the flat surface. The flush toilet according to claim 1, wherein the flush toilet is configured to be substantially flush with the surface.   The said bowl part is further provided with the 2nd water discharging part which discharges water toward the said cover member in the same turning direction as the turning flow of the wash water discharged from the said 1st water discharging part. The flush toilet according to 2.

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