Flush toilet

Abstract

To provide a water closet which can be compactly formed while achieving good product assemblability and keeping itself low.SOLUTION: The water closet includes a toilet bowl body 2 having a bowl 8 formed on the front part, a peripheral wall part 9a provided at the peripheral edge of the rear part upper face, and a recessed part 9 formed inside the peripheral wall part and recessed toward the lower side relative to the peripheral wall part, and a base 13 including a functional part which can be arranged in the recessed part. The toilet bowl body and the base are supported via receiving parts 15, 16. The receiving parts are arranged on the toilet bowl body inside of the peripheral wall part and downward of the upper face of the peripheral wall part.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a flush toilet in which a base part having a functional part attached thereto is fixed to the upper rear surface of a toilet body. [Background technology]

[0002] Conventionally, there is known a flush toilet in which a fixing plate is fixed with bolts and nuts to the upper rear surface of a toilet body on which a toilet bowl is provided, as described in Patent Document 1. When fixing the fixing plate to the toilet body, a bolt is passed through a hole in the fixing plate and a screw hole in the toilet body from the top surface of the toilet body, protruding to the underside of the toilet body and tightened with a nut.

[0003] Then, the toilet seat box, including the functional part and the toilet seat, is slid backward from the front of the toilet body on the fixing plate, and the recesses formed on the bottom surface of the toilet seat box are fitted into the fixing plate, and the engaging recesses on both sides of the recess are engaged with the protruding strips on both sides of the fixing plate to fix it in place. The toilet seat box is installed on the fixing plate fixed to the flat upper surface of the toilet body. Since the toilet seat box is easily affected by the unevenness and inclination of the ceramic toilet body, a clearance is provided between the fixing plate and the recesses of the functional part. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-077928 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, because the toilet seat box with the built-in functional part is installed on top of the flat toilet body and fixed plate, the height of the toilet seat box becomes large, which may cause a feeling of oppression to the user.

[0006] The present invention has been made in view of such problems.,Ko Can be formed compactly New structure To provide a flush toilet. [Means for solving the problem]

[0007] The flush toilet according to the present invention comprises a toilet body having a toilet bowl formed at the front, a peripheral wall provided at the peripheral edge of the upper rear surface, and a recess formed inside the peripheral wall and recessed downward relative to the peripheral wall; and the toilet seat or lid was supported. Base The front and rear support parts support the and rear side The receiving portion is located inside the peripheral wall portion and below the upper surface of the peripheral wall portion. Within the recess Then, the toilet body The rear receiving portion is disposed so as to be located above the peripheral wall portion rearward of the recess, the rear receiving portion is disposed in an area lower than the upper surface of the toilet bowl, and the base portion is connected to the rear receiving portion, and the base portion is disposed within the recess. It is characterized by being According to the present invention, the support point of the base portion having the functional portion can be set at a low position, and as a result, the height of the flush toilet can be kept low and the toilet can be configured compactly. Effect of the Invention

[0012] According to the flush toilet of the present invention, ,Ko Compact New structures that can be formed Flush toilet offer It is possible. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of a main portion of a flush toilet according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of the toilet body and toilet seat unit shown in FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is a partially enlarged perspective view showing the upper rear part of the toilet body. [Diagram 5] FIG. 2 is a perspective view of the toilet seat unit including the base plate as viewed from below. [Figure 6] 10 is a longitudinal cross-sectional view of a main portion showing an engagement state between a front claw portion provided on the base plate and a front receiving portion provided in the recess. FIG. [Figure 7]13 is a perspective view showing an engaged state between the claw receiving portion of the rear receiving portion and the rear slide claw portion. FIG. [Figure 8] 13A and 13B show the engagement state between the claw receiving portion of the rear receiving portion and the rear slide claw portion, where (a) is a front view and (b) is a perspective view seen from below. [Figure 9] This is a vertical cross-sectional view of the main parts, showing the rear receiving portion of the toilet body and the water passage portion below it. [Figure 10] 1 is an explanatory diagram showing the arrangement of the toilet seat, base plate, and cover installed on the upper surface of the toilet seat body. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a flush toilet according to an embodiment of the present invention; 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 in which the flush toilet 1 is installed is referred to as the rear or back, and the opposite side (the side where a person stands when urinating) is referred to as the front or front. 1 and 2, a flush toilet 1 according to the embodiment has a cover 4 housing a functional part 3 and a base plate 13 attached to the rear of the top surface of a ceramic toilet body 2, with a toilet seat 5 and a toilet lid cover 6 attached to the front side of the cover 4. The base plate 13 with the functional part 3 attached, the cover 4, the toilet seat 5, and the toilet lid cover 6 are referred to as a toilet seat unit 7. 2 and 3, a toilet bowl 8 is installed on the front side of the toilet body 2, and a roughly semicircular recess 9 is formed on the upper surface behind it, with a roughly arc-shaped jetty (peripheral wall) 9a protruding from the periphery to separate the recess 9. The rear of the jetty 9a of the toilet body 2 is a flat back surface to be fixed to a wall surface or the like. The 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.

[0015] 3 and 4, for example, two holes opening downward are formed in parallel in the recess 9 of the toilet body 2 as a first hole 11 and a second hole 12. The first hole 11 is a hole having a shape of a substantially quarter circle arc, bounded by ridgelines 11a, 11b, and 11c on approximately three sides. The second hole 12 is also a hole having a shape of a substantially quarter circle arc, bounded by ridgelines 12a, 12b, and 12c on approximately three sides. In the recess 9, front receiving portions (receiving portions) 15, 16 for fixing a base plate 13 as a base portion are provided at a distance from each other in front of the first hole portion 11 and the second hole portion 12. It is preferable that the base plate 13 is formed so as to fit within the recess 9. The front receiving portions 15 and 16 are formed, for example, in a substantially rectangular cylindrical shape with a bottom, and have locking openings 15a and 16a formed on the front side, respectively. In the example shown in Fig. 3, the positions of the front receiving portions 15 and 16 are slightly offset from each other in the front-rear direction.

[0016] An inverted nut 17 is screwed into the bottom of each of the front receiving parts 15, 16 and fixed to the recess 9. That is, the inverted nut 17 is inserted through the bottom of the front receiving parts 15, 16 and the through hole of the toilet body 2, and by inserting a screw into the inverted nut body, the nut protrudes from the back surface of the toilet body 2 and can be clamped and fixed between the nut and the screw. A rear receiving portion (receiving portion) 18 is formed between the first hole portion 11 and the second hole portion 12 on the rear side of the recess 9. The rear receiving portion 18 is formed in a generally L-shaped cross section, and its flat portion 18a is fixed to the rear surface of the toilet body 2 by an inverted nut 17, similar to the front receiving portions 15, 16. A claw receiving portion 19 is formed to protrude toward the rear from the upright portion 18b of the rear receiving portion 18. A tapered portion 19a is formed on the upper surface of the claw receiving portion 19.

[0017] 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. A functional unit 3 including a cleaning nozzle, a heater, and electrical components (not shown) is 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 be fitted into the first hole 11 and a second protrusion 23 that can be fitted into the second hole 12 are formed on the underside of the base plate 13, protruding downward. The first protrusion 22 and the second protrusion 23 are formed into a generally cylindrical shape with a bottom, and appropriate electrical components that form part of the functional unit 3 are stored inside. Therefore, the base plate 13 is fitted and installed in the recess 9, and the first protrusion 22 and the second protrusion 23 are fitted into the first hole 11 and the second hole 12 of the recess 9. With the remaining functional components installed on the upper surface of the base plate 13, the height of the functional components can be set lower than that of conventional functional components.

[0018] In the toilet seat unit 7, front claw portions (receiving portions) 24, 25 are formed on the underside of the base plate 13 in front of the first protruding portion 22 and the second protruding portion 23. As shown in Fig. 6, the front claw portions 24, 25 have an elastically deformable, generally L-shaped cross section and are capable of engaging with the locking openings 15a, 16a of the front receiving portions 15, 16 of the toilet body 2, respectively. 7 and 8, the rear sliding claw portion 27 provided on the base plate 13 is slidably installed on the rear receiving portion 18 provided near the jetty portion 9a at the rear of the recess 9. The rear sliding claw portion 27 is formed by a claw portion body 27a extending in a substantially arc shape along the jetty portion 9a, and a claw portion 27b that can engage with the claw receiving portion 19 is formed at a substantially right angle in the middle of the claw portion body 27a. One end of the claw portion body 27a is formed with, for example, a stepped operation portion 27c, and the other end is held in a compressed state by, for example, a coil spring 28 as an elastic member between the claw portion body 27a and an abutment surface 29 at the other end. In addition, a locking piece 27d for restricting the sliding movement of the rear sliding claw portion 27 is formed on the lower surface of the claw portion body 27a.

[0019] Therefore, the base plate 13 is pushed downward to slide the claw portion 27b of the rear sliding claw portion 27 to the right along the tapered portion 19a of the claw receiving portion 19 of the rear receiving portion 18, compressing the coil spring 28 and moving the rear sliding claw portion 27 to the right and climbing 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, and the claw portion 27b engages with the lower side of the claw receiving portion 19, and the locking piece 27d abuts against and locks with the locking portion 30 of the recess 9. To remove the rear slide claw portion 27, the base plate 13 is lifted while the operating portion 27c is slid rightward with a finger so that the claw portion 27b passes over the claw receiving portion 19, thereby releasing the lock.

[0020] In Figure 9, the toilet body 2 has a water flow section 33 below the rear receiving portion 18 in the recess 9 that supplies water to the rim for flushing the inside of the toilet bowl 8, and the flushing water flows into the toilet bowl 8 through a pipeline 34. Figure 10 shows the toilet seat 5 installed at the front of the top surface of the toilet body 2 and the cover 4 installed behind it. The base plate 13 having the functional part 3 installed at the top of the recess 9 has both front end parts 13a extending forward located in front of the jetty part 9a of the recess 9. The cover 4 installed on top of it has the rotation shaft parts 36 of the toilet seat 5 formed to protrude to the left and right, and the toilet seat 5 can be rotated up and down around the rotation shaft parts 36. The side surface 4a on the rear end side of the cover 4 is formed in a substantially cylindrical shape and is disposed so as to surround the jetty portion 9a along the substantially arc-shaped jetty portion 9a of the recess 9, with the side surface 4a covering the jetty portion 9a. When the cover 4 is lifted slightly relative to the jetty portion 9a, a gap is formed, and by inserting a finger through this gap and sliding the operating portion 27c of the rear sliding claw portion 27, the claw receiving portion 19 and the rear sliding claw portion 27 can be separated.

[0021] When viewed from the side, the toilet seat 5 has an inclined portion 5a that slopes downward from the rotating shaft portion 36 toward the upper surface 8a of the toilet bowl 8, and a seating portion 5b that is formed in front of it and is formed in an approximately arc-shaped shape along the upper surface 8a of the toilet bowl 8. Conventionally, cover 4 only extends to front end 13a of base plate 13, and front end 13a of base plate 13 is located at the front end of cover 4. As a result, a small gap k is formed between inclined portion 5a of toilet seat 5 and upper surface 8a of toilet bowl 8 and the side end of cover 4 covering base plate 13, and the inside of toilet bowl 8 is visible through this gap k. In contrast, in the flush toilet 1 according to this embodiment, the front side end portions 4b of the cover 4 are formed in a thin tapered shape that extends forward from the front end portion 13a of the base plate 13 so as to fill this gap k. This makes it possible to prevent the inside of the toilet bowl 8 from being seen from the outside through the gap k.

[0022] The flush toilet 1 according to this embodiment has the configuration described above. Next, a method for attaching and detaching the toilet seat unit 7, which includes the base plate 13, cover 4, and toilet seat 5, to the toilet body 2 will be described. As shown in Figures 2, 3 and 5, when installing the base plate 13 equipped with the functional part 3 on the toilet body 2, the first protrusion 22 and the second protrusion 23 provided on the underside of the base plate 13 are aligned with the first hole 11 and the second hole 12 formed in the recess 9 of the toilet body 2, and inserted halfway. Although the toilet seat unit 7 is shown in Figures 2 and 5, only the base plate 13 is to be installed.

[0023] Then, the base plate 13 is tilted forward, and the front claws 24, 25 provided on the underside are engaged with the locking openings 15a, 16a through the front receiving parts 15, 16, respectively, and then the rear part of the base plate 13 is rotated downward. Then, the claw part 27b of the rear slide claw part 27 abuts against the tapered part 19a of the claw receiving part 19 of the rear receiving part 18 provided on the rear end side of the recess 9. When the rear part of the base plate 13 is further lowered, the rear sliding claw portion 27 is guided by the tapered portion 19a of the claw receiving portion 19 and slides to the right in FIG. 7, compressing the coil spring 28. When the claw portion 27b climbs over the claw receiving portion 19 and reaches its underside, the biasing force of the coil spring 28 causes the claw portion 27b to move to the underside of the claw receiving portion 19 and enter into an engaged state.

[0024] As a result, the first protrusion 22 and the second protrusion 23 provided on the underside of the base plate 13 fit into the first hole 11 and the second hole 12 of the recess 9. In addition, the front claws 24, 25 and the rear slide claw 27 of the base plate 13 are firmly engaged at three points, namely, the locking openings 15a, 16a and the claw receiver 19 of the front receivers 15, 16 of the recess 9. Moreover, the three points of the front receivers 15, 16 and the claw receiver 19 of the recess 9, the front claws 24, 25 and the rear slide claw 27 are located at the vertices of a substantially triangle located near the substantially semicircular jetty portion 9a, so that the base plate 13 is firmly fixed. Then, the cover 4 and toilet seat 5 can be placed on top of that, and the toilet lid cover 6 can be placed on the toilet seat 5. To remove the base plate 13 from the recess 9 of the toilet body 2, the removal operation can be carried out in the reverse order to that described above. Alternatively, the toilet seat unit 7 can be removed all together.

[0025] As described above, according to the flush toilet 1 of this embodiment, the first and second projections 22, 23 which are provided on the underside of the base plate 13 and which house the functional part 3 are fitted into the first and second holes 11, 12 formed in the recess 9 of the toilet body 2, so that the height of the flush toilet 1 can be reduced and it can be formed compactly without feeling oppressive. Moreover, because the base plate 13 is installed in the recess 9 formed in the upper rear surface of the toilet body 2, the height of the flush toilet 1 can be reduced in this respect as well. Also, because a water passage section 33 that supplies water for flushing the toilet bowl 8 is provided below the rear receiving section 18, the height of the toilet body 2 can be reduced in this respect as well, making it compact.

[0026] Furthermore, when fixing the base plate 13 to the recess 9, the base plate 13 can be pressed downward to fix the front claw portions 24, 25 and the rear sliding claw portion 27 to the front receiving portions 15, 16 and the rear receiving portion 18, which are located at the vertices of an approximate triangle when viewed in a plane, making assembly easy and preventing wobbling in the front-to-back and left-to-right directions when fixed. Furthermore, when attaching the base plate 13 to the recess 9, the front claw portions 24, 25 are engaged with the front receiving portions 15, 16 and the rear is pushed down, thereby fixing the rear sliding claw portion 27 to the claw receiving portion 19 of the rear receiving portion 18, and to remove it, the rear side 4a of the cover 4 is lifted and the operating portion 27c of the rear sliding claw portion 27 is slid to remove it, facilitating attachment and detachment operations in the vertical direction. Furthermore, since the inverted nuts 17 are used to secure the front receiving parts 15, 16 and the rear receiving part 18 to the bottom surface of the ceramic toilet body 2 via the base plate 13, they can be secured simply by operating the bolts from above. Therefore, the inverted nuts 17 can be easily attached and detached when repairing or replacing the toilet in a small toilet space.

[0027] In the flush toilet 1 of this embodiment, the first and second protrusions 22, 23 are provided on the base plate 13, so the toilet seat unit 7 cannot be attached or detached by sliding it, but the cover 4 having a cylindrical side surface 4a that covers the functional part 3 so as to match and surround the approximately arc-shaped jetty part 9a of the recess 9 is installed, improving the design. Furthermore, the side tip 4b of the cover 4 covering the base plate 13 is extended in a tapered shape along the underside of the inclined portion 5a so as to fill the gap k between the front tip 13a of the base plate 13 and the inclined portion 5a of the toilet seat 5, sealing the gap k and making it impossible to see inside the toilet bowl 8 from the outside, which also improves the appearance and design.

[0028] The flush toilet 1 according to the present invention is not limited to the embodiment described above, and appropriate modifications and substitutions are possible without departing from the gist of the present invention. Modifications of the present invention will be explained below, but parts and components that are the same as or similar to those described in the embodiment above will be given the same reference numerals and explanations will be omitted.

[0029] For example, in the above embodiment, the first and second holes 11, 12 that open downward are formed in the upper rear surface of the toilet body 2, but a groove having a bottom may be formed at the lower end of the hole. Also, the toilet body 2 and the base plate 13 are provided with the first and second holes 11, 12 and the first and second protrusions 22, 23, but the number of holes and the protrusions that fit therein is not limited to two, and may be one, or three or more. Also, the functional part 3 to be stored in the first and second protruding parts 22, 23 may be stored in its entirety without being limited to a part of it. In this case, the height of the cover 4 on the back side of the toilet seat 5 becomes even lower, improving the design and appearance. In addition, the base plate 13 is installed within the recess 9 formed in the upper rear surface of the toilet body 2, but it is also possible to form the upper rear surface of the toilet body 2 as a flat surface as in the prior art without necessarily installing the recess 9.

[0030] In the above-described embodiment, the front receiving portions 15, 16, the rear receiving portion 18, and the claw receiving portion 19 are provided as receiving portions in the recess 9, and the front claw portions 24, 25 and the rear sliding claw portion 27 are provided as engagement portions on the underside of the base plate 13, but conversely, the front claw portions 24, 25 and the rear sliding claw portion 27 may be provided in the recess 9, and the front receiving portions 15, 16, the rear receiving portion 18, and the claw receiving portion 19 may be provided on the base plate 13. Also, one front receiving portion 15 may be provided on the front side of the recess 9, and the other front receiving portion 16 and the rear receiving portion 18 may be provided on the rear side. In this embodiment, the front receiving portions 15, 16 are first receiving portions, the rear receiving portion 18 and the claw receiving portion 19 are second receiving portions, the front claw portions 24, 25 are first engagement portions, and the rear slide claw portion 27 is the second engagement portion. Furthermore, although three receiving portions and engaging portions are provided at each vertex of an approximately triangle when viewed in a plane, they may alternatively be provided at two points, or at each vertex of an approximately quadrangle, in which case the holding strength of the base plate 13 can be further increased. [Explanation of symbols]

[0031] 1 flush toilet 2 Toilet bowl body 4 Cover 4b Side tip 5 Toilet seats 5a Slope 9 Recess 9a Jetty section (perimeter wall) 11 First hole 12 Second hole 13 Base plate (base part) 15, 16 Front receiving part (receiving part) 17 Reversible Nut 18 Rear receiving part (receiving part) 19 Claw receiving part 22 First protrusion 23 Second protrusion 24, 25 Front claw part (receiving part) 27 Rear slide claw 27b Claw part 28 Coil spring 33 Water flow section

Claims

1. a toilet body having a toilet bowl formed at a front portion, a peripheral wall portion provided at a peripheral edge portion of an upper rear surface, and a recess portion formed inside the peripheral wall portion and recessed downward relative to the peripheral wall portion; a front receiving portion and a rear receiving portion that are disposed in the recess and support a base portion on which a toilet seat or a toilet lid is supported; The rear receiving portion is supported by the toilet body within the recess located inside the peripheral wall portion and below an upper surface of the peripheral wall portion, the rear receiving portion is disposed so as to be located above the peripheral wall portion rearward of the recess, The rear receiving portion is disposed in a region lower than an upper surface of the toilet bowl, and the base portion is connected to the rear receiving portion, A flush toilet, characterized in that the base portion is disposed within the recess.

2. A flush toilet as described in claim 1, wherein the rear receiving portion has an upright portion that rises from the recess.

3. A flush toilet as described in claim 1, wherein the front receiving portion is positioned in an area lower than the top surface of the toilet bowl.

4. A flush toilet as described in claim 1, wherein the base portion is fixed to at least one of the front receiving portion and the rear receiving portion.

5. The base portion is fixed to the front receiving portion and the rear receiving portion, The flush toilet according to claim 1 , wherein the front receiving portion fixes the base portion at more points than the rear receiving portion.

6. A flush toilet as described in claim 1, wherein the base portion is fixed to the front receiving portion and the rear receiving portion at three points that form vertices of an approximately triangle in a plan view.

7. A flush toilet as described in claim 1, wherein the front receiving portion is formed with a protrusion for fixing the base portion.

8. The peripheral wall portion rearward of the recess is a rear wall of the toilet body, 2. The flush toilet according to claim 1, wherein the base portion is supported above the rear wall of the toilet body via the upright portion.

9. A flush toilet as described in claim 1, wherein the raised portion is arranged to rise from below the upper surface of the rear wall of the toilet body to above said upper surface.

10. A cover is provided on the rear upper surface of the toilet body, 2. The flush toilet according to claim 1, wherein the cover is provided so as to cover the rear of a functional section disposed above an upper surface of a rear wall at the rear of the toilet body.

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