JP7355910B2 - flush toilet - Google Patents

Description

TECHNICAL FIELD The present invention relates to a flush toilet in which a base portion having a functional portion attached thereto is fixed to the rear upper surface of the toilet main body.

BACKGROUND ART Conventionally, a flushing toilet is known, for example, as described in Patent Document 1, a fixing plate is fixed to the rear upper surface of a toilet main body provided with a toilet bowl using bolts and nuts. When fixing the fixing plate to the toilet body, bolts are passed through holes in the fixing plate and screw holes in the toilet body from the top of the toilet body, projecting to the bottom of the toilet body, and then tightened and fixed with nuts.

Then, slide the toilet seat box including the functional parts and the toilet seat backwards from the front of the toilet main body on the fixed plate, and fit the recess formed on the bottom surface of the toilet seat box into the fixed plate, and engage the parts on both sides of the recess. The fitting recesses are engaged with protrusions provided on both sides of the fixing plate to fix it. The toilet seat box is installed on a fixed plate fixed to the flat top surface of the toilet bowl body. Since the toilet seat box is easily affected by the unevenness and inclination of the ceramic toilet bowl body, a clearance is provided between the fixing plate and the recess in the functional part.

JP2009-077928A

However, since the toilet seat box with built-in functional parts is installed above the flat toilet main body and the fixing plate, the height of the toilet seat box becomes large, which may give a feeling of pressure to the user.

The present invention has been made in view of such problems, and an object of the present invention is to provide a flush toilet bowl that can be made compact by keeping its height low.

The flush toilet bowl according to the present invention includes a toilet bowl formed in the front part, a peripheral wall part provided on the peripheral edge of the upper surface of the rear part, and a wall part formed inside the peripheral wall part and recessed downward with respect to the peripheral wall part. a toilet main body having a recessed portion; and a front side receiving portion and a rear side receiving portion disposed in the recessed portion and supporting a base portion including a toilet seat or a toilet lid , wherein the rear side receiving portion is larger than the peripheral wall portion. The rear receiving part is supported by the toilet main body within the recessed part on the inner side and below the upper surface of the peripheral wall part, and the rear receiving part includes a flat part supported by the toilet main body, and an upright part extending in a direction rising from the flat part. , wherein the upright portion is located above the peripheral wall portion behind the recessed portion, and the rear receiving portion is located in an area lower than the top surface of the toilet bowl. , and the base portion is engaged with the rear receiving portion, and the base portion is disposed within the recess .

Further, the front receiving portion may be disposed in an area lower than the upper surface of the toilet bowl, and the base portion may be engaged with the front receiving portion .

Further, the peripheral wall portion behind the recessed portion may be the rear wall of the toilet main body, and the base portion may be supported above the rear wall of the toilet main body via the upright portion .

Furthermore, a cover may be provided on the rear upper surface of the toilet main body, and the cover may be disposed to cover the rear receiving portion .

1 is a perspective view of essential parts of a flush toilet according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the toilet bowl body and toilet seat unit shown in FIG. 1. FIG. It is a perspective view of a toilet main body. FIG. 3 is a partially enlarged perspective view showing the upper rear part of the toilet bowl body. FIG. 2 is a perspective view of the toilet seat unit including the base plate seen from below. FIG. 7 is a longitudinal cross-sectional view of a main part showing a state of engagement between a front claw part provided on the base plate and a front receiving part provided in a recess. It is a perspective view which shows the engagement state of the claw receiving part of a rear side receiving part, and a rear side sliding claw part. It shows the engaged state of the claw receiving part of the rear receiving part and the rear sliding claw part, in which (a) is a front view and (b) is a perspective view seen from below. FIG. 2 is a vertical cross-sectional view of a main part showing a rear receiving part of the toilet bowl body and a water passage part below the receiving part. It is an explanatory view of main parts showing the arrangement of the toilet seat, base plate, and cover installed on the upper surface of the toilet seat body.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A flush toilet according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
1 to 10 show a flush toilet 1 according to an embodiment of the present invention. In this specification, the wall side or back side of the toilet space to which the flush toilet 1 is attached is referred to as the rear, and the opposite side (the side on which a person stands when urinating) is referred to as the front.
In the flush toilet 1 according to the embodiment shown in FIGS. 1 and 2, a cover 4 housing a functional part 3 and a base plate 13 is installed at the rear of the upper surface of a ceramic toilet main body 2, and a toilet seat 5 and a toilet seat 5 are installed on the front side of the cover 4. A toilet lid cover 6 is installed. The base plate 13 on which the functional part 3 is installed, the cover 4, the toilet seat 5, and the toilet lid cover 6 are referred to as a toilet seat unit 7.
In FIGS. 2 and 3, a toilet bowl 8 is installed on the front side of the toilet main body 2, and a substantially semicircular recess 9 is formed on the upper rear surface thereof, and a substantially arc-shaped jetty partitioning the recess 9 at the peripheral edge thereof. A portion (peripheral wall portion) 9a is formed to protrude. The rear part of the jetty part 9a of the toilet main body 2 is a flat back surface that is fixed to a wall surface or the like. A recess 9 between the toilet bowl 8 and a first hole 11 and a second hole 12, which will be described later, is formed in an area lower than the top surface of the toilet bowl 8.

3 and 4, in the recess 9 of the toilet main body 2, for example, two holes opening downward are formed in parallel as a first hole 11 and a second hole 12. The first hole 11 is a substantially 1/4 arc-shaped hole partitioned by three ridge lines 11a, 11b, and 11c. The second hole 12 is also a substantially 1/4 arc-shaped hole partitioned by three ridge lines 12a, 12b, and 12c.
In the recessed portion 9, front side receiving portions (receiving portions) 15 and 16 for fixing a base plate 13 as a base portion are spaced apart from each other in front of the first hole portion 11 and the second hole portion 12. Preferably, the base plate 13 is formed to fit within the recess 9.
The front receiving parts 15 and 16 are formed, for example, in the shape of a substantially square cylinder with a bottom, and locking openings 15a and 16a are formed on the front side, respectively. In the example shown in FIG. 3, the positions of the front receiving part 15 and the front receiving part 16 are slightly shifted in the front-rear direction.

A reversing nut 17 is screwed into the bottom of each front receiving part 15, 16, and is fixed in the recess 9, respectively. That is, the reversing nut 17 is inserted through the bottom of the front receiving parts 15 and 16 and the through hole of the toilet bowl main body 2, and by inserting the screw into the reversing nut main body, the nut protrudes to the back surface of the toilet bowl main body 2 and is sandwiched between the screws. Can be fixed with screws.
A rear receiving part (receiving part) 18 is formed between the first hole part 11 and the second hole part 12 on the rear side of the recessed part 9 . The rear receiving portion 18 has a substantially L-shaped cross section, and its flat portion 18a is fixed to the back surface of the toilet main body 2 with a reversing nut 17 in the same way as the front receiving portions 15 and 16. A claw receiving part 19 is formed in the upright part 18b of the rear receiving part 18 so as to protrude toward the rear direction. A tapered portion 19a is formed on the upper surface of the claw receiving portion 19.

Next, FIG. 5 is a perspective view showing a toilet seat unit 7 including a toilet seat 5, a toilet lid cover 6, a base plate 13, and a cover 4. As shown in FIG. Functional parts 3 such as a cleaning nozzle, a heater, and electrical components (not shown) are installed on the base plate 13, and a shutter 21 is attached to the surface facing the toilet bowl 8. A first protrusion 22 that can fit into the first hole 11 and a second protrusion 23 that can fit into the second hole 12 are formed on the lower surface of the base plate 13 to protrude downward, respectively. The first protruding part 22 and the second protruding part 23 are formed into a substantially bottomed cylindrical shape, and appropriate electrical components and the like that form part of the functional part 3 are housed inside thereof.
Therefore, with the base plate 13 fitted and installed in the recess 9 and the first protrusion 22 and second protrusion 23 fitted in the first hole 11 and second hole 12 of the recess 9, The remaining functional parts are installed on the upper surface of the base plate 13, but their height can be lower than that of conventional functional parts.

Further, in the toilet seat unit 7, front claw parts (received parts) 24 and 25 are formed on the lower surface of the base plate 13 in front of the first protrusion 22 and the second protrusion 23. As shown in FIG. 6, the front claws 24, 25 have elastically deformable, generally L-shaped cross sections, and can be engaged with locking openings 15a, 16a of the front receiving parts 15, 16 of the toilet main body 2, respectively.
In FIGS. 7 and 8, a rear sliding claw portion 27 provided on the base plate 13 is slidably installed in a rear receiving portion 18 provided near the jetty portion 9a at the rear of the recessed portion 9. The rear sliding claw portion 27 has a claw portion 27b that can be engaged with the claw receiving portion 19 and protrudes at a substantially right angle from the middle portion of a claw main body 27a that extends in a substantially arc shape along the jetty portion 9a. For example, a step-like operation section 27c is formed at one end of the claw main body 27a, and at the other end, an elastic member, for example, a coil spring 28, is in a compressed state between it and the contact surface 29 at the other end. Retained. Furthermore, a locking piece 27d for regulating the sliding movement of the rear sliding claw portion 27 is formed on the lower surface of the claw main body 27a.

Therefore, the base plate 13 is pushed down and the claw part 27b of the rear sliding claw part 27 is slid to the right along the tapered part 19a of the claw receiving part 19 of the rear receiving part 18, and the coil spring 28 is compressed. Move the rear slide claw part 27 to the right and cross over from above to below. Then, the rear sliding claw portion 27 moves to the left by the biasing force of the coil spring 28, the claw portion 27b engages with the lower side of the claw receiving portion 19, and the locking piece 27d engages with the locking portion 30 of the recess 9. It comes into contact with and locks.
Further, in order to remove the rear sliding claw portion 27, the lock can be released by sliding the operating portion 27c to the right with a finger while lifting the base plate 13 so that the claw portion 27b gets over the claw receiving portion 19.

In FIG. 9, the toilet main body 2 is provided with a water passage part 33 that supplies water to the rim for washing the inside of the toilet bowl 8 below the rear receiving part 18 in the recess 9, and the washing water is supplied to the rim through a conduit 34. It is designed to flow into the pot 8.
FIG. 10 shows the toilet seat 5 installed in front of the upper surface of the toilet main body 2 and the cover 4 installed behind it. The base plate 13 having the functional part 3 installed in the upper part of the recess 9 has front end portions 13a on both sides extending forward and located in front of the jetty portion 9a of the recess 9. A rotary shaft portion 36 of the toilet seat 5 is formed on the cover 4 installed on the upper part of the cover 4 so as to protrude left and right, and the toilet seat 5 is rotatable in the vertical direction about the rotary shaft portion 36.
A side surface 4a on the rear end side of the cover 4 is formed in a substantially cylindrical shape, and is arranged so as to surround the jetty portion 9a along the roughly arc-shaped jetty portion 9a of the recess 9. is covered. When the cover 4 is slightly lifted with respect to the jetty part 9a, a gap is formed, and by inserting a finger through this gap and slidingly operating the operation part 27c of the rear slide claw part 27, the claw receiver part 19 and the rear slide The claw portion 27 can be removed.

The toilet seat 5 is formed in a substantially arc shape along the top surface 8a of the toilet bowl 8, and includes a slope portion 5a that slopes downward from the rotating shaft portion 36 toward the top surface 8a of the toilet bowl 8, and in front of the slope portion 5a. It has a seating portion 5b.
The conventional cover 4 extends only to the front end 13a of the base plate 13, and the front end 13a of the base plate 13 is provided at the front end of the cover 4. Therefore, a small gap k is formed between the inclined part 5a of the toilet seat 5 and the top surface 8a of the toilet bowl 8 and the side tip of the cover 4 that covers the base plate 13. was visible.
In contrast, in the flush toilet bowl 1 according to the present embodiment, the tips 4b of both front sides of the cover 4 extend forward from the front tip 13a of the base plate 13 and are formed in a thin tapered shape so as to fill this gap k. ing. Therefore, the inside of the toilet bowl 8 can be prevented from being visually observed from the outside through the gap k.

The flush toilet 1 according to the present embodiment has the above-described configuration.Next, a method for attaching and detaching the toilet seat unit 7, which includes the base plate 13, the cover 4, and the toilet seat 5, to the toilet main body 2 will be described.
As shown in FIGS. 2, 3, and 5, when installing the base plate 13 equipped with the functional part 3 on the toilet main body 2, the first protrusion 22 and the second protrusion 23 provided on the bottom surface of the base plate 13 are connected to the toilet bowl body 2. It is aligned with the first hole 11 and second hole 12 formed in the recess 9 of the main body 2 and inserted halfway. Although the toilet seat unit 7 is shown in FIGS. 2 and 5, only the base plate 13 is attached.

Then, after tilting the base plate 13 forward and letting the front claws 24 and 25 provided on the lower surface pass through the front receiving parts 15 and 16 and engage the locking openings 15a and 16a, respectively, the rear part of the base plate 13 is tilted downward. Rotate. Then, the claw portion 27b of the rear sliding claw portion 27 comes into contact with the tapered portion 19a of the claw receiving portion 19 of the rear receiving portion 18 provided on the rear end side of the recess 9.
When the rear part of the base plate 13 is further lowered, it is guided by the tapered part 19a of the claw receiving part 19, and the rear sliding claw part 27 slides to the right in FIG. When the claw portion 27b crosses over the portion 19 and reaches the lower surface thereof, the claw portion 27b moves to the lower surface of the claw receiving portion 19 due to the biasing force of the coil spring 28 and becomes engaged.

As a result, the first protrusion 22 and the second protrusion 23 provided on the lower surface of the base plate 13 fit into the first hole 11 and the second hole 12 of the recess 9. Further, the front pawls 24 and 25 of the base plate 13 and the rear slide pawl 27 are firmly engaged at three locations: the locking openings 15a and 16a of the front receiving portions 15 and 16 of the recess 9, and the pawl receiving portion 19. . Moreover, each of the three points, the front receiving parts 15, 16, the claw receiving part 19, the front claw parts 24, 25, and the rear sliding claw part 27 of the recess 9, are arranged in a substantially triangular shape located near the substantially semicircular jetty part 9a. Since it is located at each vertex, the base plate 13 is firmly fixed.
Then, a cover 4 and a toilet seat 5 can be installed thereon, and a toilet lid cover 6 can be installed on the toilet seat 5. In addition, when removing the base plate 13 from the recess 9 of the toilet main body 2, the removal operation may be performed in the reverse order of the above-mentioned procedure. Alternatively, the toilet seat unit 7 can be removed all at once.

As described above, according to the flush toilet 1 according to the present embodiment, the first and second holes 11 and 12 formed in the recess 9 of the toilet main body 2 are provided on the lower surface of the base plate 13 to accommodate the functional part 3. Since the first and second protrusions 22 and 23 are fitted together, the height of the flush toilet bowl 1 can be reduced and can be formed compactly without feeling oppressive.
Moreover, since the base plate 13 is installed in the recess 9 formed on the rear upper surface of the toilet main body 2, the height of the flush toilet 1 can also be reduced in this respect. Moreover, since the water passage part 33 for supplying water for washing inside the toilet bowl 8 is provided below the rear receiving part 18, the height of the toilet bowl main body 2 can be suppressed and made compact in this respect as well.

Further, when fixing the base plate 13 to the recess 9, the base plate 13 is pushed down and the front claw parts 24, 25 are attached to the front side receiving parts 15, 16 and the rear side receiving part 18, which are installed at the apex positions of a substantially triangular shape in plan view. Since the rear sliding claw portion 27 can be fixed, assembly is easy and shaking in the front, rear, left and right directions can be prevented in the fixed state.
Furthermore, when attaching the base plate 13 to the recess 9, the front claws 24, 25 are engaged with the front receiving parts 15, 16 and the rear part is pushed down, so that the rear sliding claws are attached to the claw receiving parts 19 of the rear receiving parts 18. The part 27 can be fixed, and can be removed by lifting the rear side surface 4a of the cover 4 and sliding the operating part 27c of the rear sliding claw part 27, making it easy to attach and detach in the vertical direction. .
Furthermore, since the reversible nuts 17 are used to fix the front receiving parts 15, 16 and the rear receiving part 18 to the bottom surface of the ceramic toilet bowl body 2 via the base plate 13, they can be fixed simply by operating the bolts from the top side. I can do it. Therefore, the reversing nut 17 can be easily attached and detached during repair or replacement work in a narrow toilet space.

In the flush toilet 1 of this embodiment, since the base plate 13 is provided with the first and second protrusions 22 and 23, the toilet seat unit 7 cannot be attached or detached by sliding movement, but it fits into the substantially arc-shaped protrusion 9a of the recess 9. Since the cover 4 having the cylindrical side surface 4a covering the functional part 3 is installed to surround the functional part 3, the design is improved.
Furthermore, since the side end 4b of the cover 4 covering the base plate 13 is extended in a tapered shape along the lower surface of the slope 5a so as to fill the gap k between the front end 13a of the base plate 13 and the slope 5a of the toilet seat 5, Since the gap k is sealed and the inside of the toilet bowl 8 cannot be seen from the outside, the appearance is good in this respect as well, and the design is improved.

Note that the flush toilet 1 according to the present invention is not limited to the embodiments described above, and appropriate changes and substitutions can be made without departing from the gist of the present invention. Modifications of the present invention will be described below, but the same or similar parts and members described in the above-described embodiments will be denoted by the same reference numerals and the description thereof will be omitted.

For example, in the embodiment described above, the first and second holes 11 and 12 that open downward are formed on the rear upper surface of the toilet main body 2, but a groove having a bottom may be formed at the lower end of the hole. In addition, although two first and second holes 11 and 12 and two first and second protrusions 22 and 23 were provided in the toilet main body 2 and the base plate 13, the holes and the protrusions that fit into the holes are The number is not limited to two, and may be one or three or more.
Moreover, the functional parts 3 to be stored in the first and second protrusions 22 and 23 are not limited to only some parts, but may be stored in their entirety. In this case, the height of the cover 4 on the back side of the toilet seat 5 is further reduced, and the design and appearance can be improved.
Furthermore, although the base plate 13 is installed in the recess 9 formed in the rear upper surface of the toilet bowl main body 2, the rear upper surface of the toilet bowl main body 2 is formed into a flat surface as in the prior art without necessarily installing the recess 9. It's okay.

Further, in the embodiment described above, the front receiving parts 15 and 16, the rear receiving part 18, and the claw receiving part 19 are provided in the recess 9 as receiving parts, and the front claw parts 24 and 25 and the rear claw parts are provided on the lower surface of the base plate 13 as engaging parts. Although the side sliding claw portion 27 is provided, on the contrary, the front claw portions 24 and 25 and the rear sliding claw portion 27 are provided in the recessed portion 9, and the front receiving portions 15 and 16, the rear receiving portion 18, and the rear receiving portion 18 are provided on the base plate 13. A claw receiving portion 19 may be provided. Alternatively, one front receiving part 15 may be provided on the front side of the recess 9, and another front receiving part 16 and a rear receiving part 18 may be provided on the rear side.
In this embodiment, the front receiving parts 15 and 16 are the first receiving parts, the rear receiving part 18 and the claw receiving part 19 are the second receiving parts, and the front claw parts 24 and 25 are the first receiving parts. The rear sliding claw portion 27 is the second engaging portion.
In addition, although three receiving parts and engaging parts are provided at each vertex of a substantially triangular shape in plan view, instead of these, two points, or four or more points may be provided at each vertex of a substantially quadrangular shape. In this case, the holding strength of the base plate 13 can be further increased.

1 Flush toilet 2 Toilet main body 4 Cover 4b Side tip 5 Toilet seat 5a Inclined part 9 Recessed part 9a Jetty part (peripheral wall part)
11 First hole part 12 Second hole part 13 Base plate (base part)
15, 16 Front side receiving part (receiving part)
17 Reversing nut 18 Rear side receiving part (receiving part)
19 Claw receiving part 22 First protruding part 23 Second protruding part 24, 25 Front claw part (received part)
27 Rear slide claw part 27b claw part 28 Coil spring 33 Water passage part

Claims (4)

A toilet main body having a toilet bowl formed in the front part, a peripheral wall part provided on the peripheral edge of the rear upper surface, and a recessed part formed inside the peripheral wall part and recessed downward with respect to the peripheral wall part;
comprising a front side receiving part and a rear side receiving part arranged in the recessed part and supporting a base part including a toilet seat or a toilet lid,
The rear receiving part is supported by the toilet main body within the recessed part inside the peripheral wall part and below the upper surface of the peripheral wall part,
The rear receiving part includes a flat part supported by the toilet main body, and an upright part extending in a rising direction from the flat part,
The upright portion is disposed so as to be located above the peripheral wall portion behind the recessed portion,
The rear receiving portion is disposed in an area lower than the top surface of the toilet bowl, and the base portion is engaged with the rear receiving portion,
A flush toilet bowl , wherein the base portion is disposed within the recess . The flush toilet according to claim 1, wherein the front receiving portion is disposed in an area lower than the top surface of the toilet bowl, and the base portion is engaged with the front receiving portion. 3. The peripheral wall portion behind the recessed portion is the rear wall of the toilet main body, and the base portion is supported above the rear wall of the toilet main body via the upright portion. flush toilet. The flush toilet according to claim 1 or 2, wherein a cover is provided on the rear upper surface of the toilet main body, and the cover is disposed to cover the rear receiving part.

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