JP7623450B2

JP7623450B2 - Flush toilet

Info

Publication number: JP7623450B2
Application number: JP2023156016A
Authority: JP
Inventors: さおり中村; 勇人平澤; 康宏近藤; 岳也一柳
Original assignee: Lixil Corp
Current assignee: Lixil Corp
Priority date: 2020-01-28
Filing date: 2023-09-21
Publication date: 2025-01-28
Anticipated expiration: 2036-01-15
Also published as: JP2023164697A; JP2020073773A; JP7355910B2; JP2022186918A; JP7168594B2

Description

本発明は、便器本体の後側上面に機能部を装着したベース部を固定した水洗式便器に関する。 The present invention relates to a flush toilet in which a base part with a functional part attached is fixed to the upper rear surface of the toilet body.

従来、水洗式便器として、例えば特許文献１に記載のように便鉢を設けた便器本体の後側上面に固定プレートをボルトとナットで固定したものが知られている。固定プレートを便器本体に固定する際、便器本体の上面から固定プレートの孔部と便器本体のネジ穴にボルトを貫通して便器本体の下面に突出させてナットで締め付け固定していた。 Conventionally, as a flush toilet, there is known one in which a fixing plate is fixed with bolts and nuts to the upper rear surface of the toilet body on which the toilet bowl is provided, as described in Patent Document 1, for example. 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.

そして、固定プレート上で便器本体の前方から機能部や便座を含む便座ボックスを後方にスライドさせて、便座ボックスの下面に形成した凹所を固定プレートに嵌合させ、凹所の両側部の係合凹部を固定プレートの両側部に設けた凸条と係合させて固定している。便座ボックスは便器本体の平坦な上面に固定した固定プレート上に設置されている。便座ボックスは陶器製の便器本体の凹凸や傾きの影響を受け易いため固定プレートと機能部の凹所の間にクリヤランスを設けている。 The toilet seat box, which includes the functional part and toilet seat, is then slid backwards from the front of the toilet body on the fixing plate, fitting the recesses formed on the underside of the toilet seat box into the fixing plate, and the engaging recesses on both sides of the recess engage with the protrusions on both sides of the fixing plate to fix it in place. The toilet seat box is installed on a fixing plate that is fixed to the flat top surface of the toilet body. As the toilet seat box is easily affected by the unevenness and tilt of the ceramic toilet body, a clearance is provided between the fixing plate and the recesses in the functional part.

特開２００９－０７７９２８号公報JP 2009-077928 A

しかしながら、機能部を内蔵した便座ボックスは平坦な便器本体と固定プレートの上部に設置するため便座ボックスの高さが大きくなり、使用者に圧迫感を与えるおそれがあった。 However, because the toilet seat box with the built-in functional parts is installed on top of the flat toilet body and fixed plate, the toilet seat box becomes tall, which can cause a feeling of oppression for the user.

本発明は、このような課題に鑑みてなされたものであって、コンパクトに形成できる新たな構造の水洗式便器を提供することを目的とする。 The present invention has been made in consideration of such problems , and has an object to provide a flush toilet with a new structure that can be formed compactly.

本発明による水洗式便器は、前部に形成された便鉢、後部上面の周縁部に設けられた周壁部、および該周壁部の内側に形成され前記周壁部に対して下方に向けて凹んだ凹部、を有する便器本体と、前記凹部に配され、便座または便蓋が支持されたベース部を支持する前側受け部および後側受け部と、を備え、前記後側受け部は、前記周壁部よりも内側かつ前記周壁部の上面より下方の前記凹部内で前記便器本体に支持されており、前記後側受け部は、前記凹部よりも後方の周壁部より上方に位置するように配設され、前記後側受け部が前記便鉢の上面よりも低い領域に配置されており、かつ、前記ベース部が前記後側受け部と連結され、前記ベース部が、前記凹部内に配設されていることを特徴とする。
本発明によれば、機能部を備えたベース部の支持点を低い位置に設定することができ、結果として、水洗式便器の高さを低く抑えてコンパクトに構成することができる。 The flush toilet according to the present invention comprises a toilet body having a toilet bowl formed at the front, a peripheral wall portion provided on the peripheral edge of the upper surface of the rear, and a recess formed inside the peripheral wall portion and recessed downwardly relative to the peripheral wall portion, and a front receiving portion and a rear receiving portion arranged in the recess and supporting a base portion on which a toilet seat or a toilet lid is supported , the rear receiving portion being supported by the toilet body within the recess , which is inside the peripheral wall portion and below the upper surface of the peripheral wall portion, the rear receiving portion being arranged so as to be positioned above the peripheral wall portion rearward of the recess, the rear receiving portion being arranged in an area lower than the upper surface of the toilet bowl, and the base portion being connected to the rear receiving portion and arranged within the recess .
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.

本発明による水洗式便器によれば、コンパクトに形成できる新たな構造の水洗式便器を提供することができる。 According to the flush toilet of the present invention , it is possible to provide a flush toilet of a new structure that can be formed compactly.

本発明の実施形態による水洗式便器の要部斜視図である。FIG. 1 is a perspective view of a main portion of a flush toilet according to an embodiment of the present invention. 図１に示す便器本体と便座ユニットの分解斜視図である。FIG. 2 is an exploded perspective view of the toilet body and toilet seat unit shown in FIG. 1 . 便器本体の斜視図である。FIG. 便器本体の上面後部を示す部分拡大斜視図である。FIG. 2 is a partially enlarged perspective view showing the upper rear part of the toilet body. ベースプレートを含む便座ユニットを下方から見た斜視図である。FIG. 2 is a perspective view of the toilet seat unit including the base plate as viewed from below. ベースプレートに設けた前側爪部と凹部に設けた前側受け部の係合状態を示す要部縦断面図である。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. 後側受け部の爪受け部と後側スライド爪部の係合状態を示す斜視図である。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. 後側受け部の爪受け部と後側スライド爪部の係合状態を示すもので、（ａ）は正面図、（ｂ）は下方から見た斜視図である。13A and 13B are diagrams showing an engaged state between the claw receiving portion of the rear receiving portion and the rear slide claw portion, in which FIG. 便器本体の後側受け部とその下方の通水部を示す要部縦断面図である。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. 便座本体の上面に設置した便座とベースプレートとカバーの配置を示す要部説明図である。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.

以下、本発明の実施形態による水洗式便器を添付図面によって説明する。
図１乃至図１０は本発明の実施形態による水洗式便器１を示すものである。本明細書において、水洗式便器１を取り付けるトイレ空間の壁面側または背面側を後部、後方といい、これと反対側（人が小便をする際に立つ方）を前部、前方という。
図１及び図２に示す実施形態による水洗式便器１は、陶器製の便器本体２の上面後部に機能部３とベースプレート１３を収納したカバー４が設置され、カバー４の前方側に便座５と便蓋カバー６が設置されている。機能部３を設置したベースプレート１３とカバー４と便座５と便蓋カバー６を便座ユニット７という。
図２及び図３において、便器本体２の前方側には便鉢８が設置され、その後方上面に略半円状の凹部９が形成され、その周縁部に凹部９を仕切る略円弧状の突堤部（周壁部）９ａが突出して形成されている。便器本体２の突堤部９ａの後方は壁面等に固定する平坦な背面とされている。便鉢８と後述の第一穴部１１、第二穴部１２の間の凹部９は便鉢８の上面より低い領域に形成されている。 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, and 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 provided 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.

図３及び図４において、便器本体２の凹部９内には下方に開口する例えば２つの穴部が第一穴部１１、第二穴部１２として並列に形成されている。第一穴１１は略３辺の稜線１１ａ、１１ｂ、１１ｃによって仕切られた略１／４円弧状の穴部である。第二穴１２も略３辺の稜線１２ａ、１２ｂ、１２ｃによって仕切られた略１／４円弧状の穴部である。
凹部９において、第一穴部１１，第二穴部１２の前方にはベース部としてのベースプレート１３を固定するための前側受け部（受け部）１５、１６が離間して設置されている。ベースプレート１３は凹部９内に納まるように形成されていることが好ましい。
前側受け部１５、１６は例えば略四角筒の有底筒状に形成され、前側に係止開口１５ａ、１６ａがそれぞれ形成されている。図３に示す例では、前側受け部１５と前側受け部１６の位置が前後方向に少しずれている。 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.

各前側受け部１５，１６の底部には反転ナット１７がねじ込まれて、凹部９にそれぞれ固定されている。即ち、反転ナット１７は前側受け部１５，１６の底部と便器本体２の貫通孔を挿通し、ビスを反転ナット本体に差し込むことでナットが便器本体２の裏面に突出してビスとの間で挟み込んでねじ固定できる。
凹部９の後方側で第一穴部１１，第二穴部１２の間には後側受け部（受け部）１８が形成されている。後側受け部１８は断面略Ｌ字状に形成され、その平坦部１８ａが反転ナット１７で前側受け部１５，１６と同様に便器本体２の裏面との間で固定されている。後側受け部１８の起立部１８ｂには後部方向に向けて爪受け部１９が突出して形成されている。爪受け部１９の上面にはテーパ部１９ａが形成されている。 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 through holes in 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 with a generally L-shaped cross section, and its flat portion 18a is fixed to the rear surface of the toilet body 2 by a reverse nut 17, similar to the front receiving portions 15, 16. A claw receiving portion 19 is formed protruding 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.

次に図５は便座５と便蓋カバー６とベースプレート１３とカバー４を備えた便座ユニット７を示す斜視図である。ベースプレート１３上には図示しない洗浄ノズルやヒータや電装部品等の機能部３が設置されており、便鉢８に臨む面にシャッタ２１が取り付けられている。ベースプレート１３の下面には第一穴部１１に嵌合可能な第一突出部２２と第二穴部１２に嵌合可能な第二突出部２３がそれぞれ下方に突出して形成されている。第一突出部２２と第二突出部２３は略有底筒状に形成されており、その内部には機能部３の一部をなす適宜の電装部品等が収納されている。
そのため、凹部９内にベースプレート１３を嵌合させて設置し、第一突出部２２と第二突出部２３を凹部９の第一穴部１１と第二穴部１２内に嵌合した状態で、残りの機能部品はベースプレート１３の上面に設置されるが、その高さは従来の機能部よりも低く設置できる。 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 part 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 bottomed cylindrical shape, and appropriate electrical components that form part of the functional part 3 are housed 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 portion 11 and the second hole portion 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.

また、便座ユニット７において、ベースプレート１３の下面で第一突出部２２と第二突出部２３の前方には前側爪部（被受け部）２４、２５が形成されている。前側爪部２４、２５は、図６に示すように、弾性変形可能な断面略Ｌ字状で便器本体２の前側受け部１５，１６の係止開口１５ａ、１６ａにそれぞれ係合可能である。
図７及び図８において、凹部９の後方の突堤部９ａ近傍に設けた後側受け部１８にはベースプレート１３に設けた後側スライド爪部２７がスライド可能に設置されている。後側スライド爪部２７は突堤部９ａに沿って略円弧状に延びる爪部本体２７ａの中間部に爪受け部１９に係合可能な爪部２７ｂが略直角に突出して形成されている。爪部本体２７ａの一方の端部には例えば階段状の操作部２７ｃが形成され、他方の端部には弾性部材として例えばコイルばね２８が圧縮状態で他端の当接面２９との間に保持されている。また、爪部本体２７ａの下面には後側スライド爪部２７のスライド移動を規制するための係止片２７ｄが形成されている。 In addition, in the toilet seat unit 7, front claws (receiving portions) 24, 25 are formed in front of the first protruding portion 22 and the second protruding portion 23 on the underside of the base plate 13. As shown in Figure 6, the front claws 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, a rear sliding claw 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 27 is formed by a claw body 27a extending in a substantially arc shape along the jetty portion 9a, and a claw 27b that can engage with the claw receiving portion 19 is formed at a substantially right angle in the middle of the claw body 27a. A stepped operating portion 27c is formed at one end of the claw body 27a, and a coil spring 28 is held in a compressed state as an elastic member at the other end between the claw body 27a and an abutting surface 29 at the other end. A locking piece 27d for restricting the sliding movement of the rear sliding claw 27 is formed on the lower surface of the claw body 27a.

そのため、ベースプレート１３を下方に押し下げて後側スライド爪部２７の爪部２７ｂを後側受け部１８の爪受け部１９のテーパ部１９ａに沿って右方にスライドさせ、コイルばね２８を圧縮させて後側スライド爪部２７を右方に移動させて上方から下方に乗り越える。すると、コイルばね２８の付勢力で後側スライド爪部２７が左方に移動して爪部２７ｂが爪受け部１９の下側で係合し、係止片２７ｄは凹部９の係止部３０に当接して係止する。
また、後側スライド爪部２７を外すには、ベースプレート１３を持ち上げながら指で操作部２７ｃを右方にスライドさせて爪部２７ｂが爪受け部１９を乗り越えることで係止を解除できる。 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 release 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.

図９において、便器本体２は凹部９における後側受け部１８の下方に便鉢８内を洗浄するための水をリムに供給する通水部３３が設置され、管路３４を通して洗浄水が便鉢８内に流入するようになっている。
図１０は便器本体２の上面前方に設置した便座５とその後方に設置したカバー４とを示すものである。凹部９の上部に設置された機能部３を有するベースプレート１３は前方側に延びる両側の前側先端部１３ａが凹部９の突堤部９ａの前側に位置している。その上部に設置されるカバー４には便座５の回転軸部３６が左右に突出して形成され、回転軸部３６を中心に便座５が上下方向に回動可能とされている。
カバー４の後端側の側面４ａは略円筒状に形成されており、凹部９の略円弧状の突堤部９ａに沿って突堤部９ａを囲うように配設されて、側面４ａで突堤部９ａを覆っている。カバー４を突堤部９ａに対して若干持ち上げると隙間が形成され、この隙間を通して指を挿入して後側スライド爪部２７の操作部２７ｃをスライド操作することで、爪受け部１９と後側スライド爪部２７を離脱できる。 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 upper 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 a rotation shaft part 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 part 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, covering the jetty portion 9a with the side surface 4a. When the cover 4 is lifted slightly above 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.

便座５は側面視で回転軸部３６から便鉢８の上面８ａに向けて下方に傾斜する傾斜部５ａとその前方に形成されていて便鉢８の上面８ａに沿って略円弧状に形成された着座部５ｂとを有している。
従来のカバー４はベースプレート１３の前側先端部１３ａまでしか延びておらず、ベースプレート１３の前側先端部１３ａがカバー４の前端位置に設けられていた。そのため、便座５の傾斜部５ａと便鉢８の上面８ａとの間にはベースプレート１３を覆うカバー４の側部先端との間に小さな隙間ｋが形成され、この隙間ｋを通して便鉢８の内部を目視可能であった。
これに対し、本実施形態による水洗式便器１では、カバー４の前方側の両側部先端４ｂがこの隙間ｋを埋めるようにベースプレート１３の前側先端部１３ａより前方に延びて薄いテーパ状に形成されている。そのため、隙間ｋから便鉢８の内部が外部から目視されることを防止できる。 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, the cover 4 extends only up to the front end 13a of the base plate 13, and the front end 13a of the base plate 13 is located at the front end of the cover 4. As a result, a small gap k is formed between the inclined portion 5a of the toilet seat 5 and the top surface 8a of the toilet bowl 8 and the side end of the cover 4 covering the base plate 13, and the inside of the toilet bowl 8 is visible through this gap k.
In contrast, in the flush toilet 1 according to this embodiment, the front end portions 4b of both sides of the cover 4 extend forward from the front end portion 13a of the base plate 13 in a thin tapered shape so as to fill the 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.

本実施形態による水洗式便器１は上述した構成を備えており、次に便器本体２に対するベースプレート１３とカバー４と便座５を備えた便座ユニット７の着脱方法について説明する。
図２、図３及び図５に示すように、便器本体２に機能部３を備えたベースプレート１３を設置する場合、ベースプレート１３の下面に設けた第一突出部２２と第二突出部２３を便器本体２の凹部９に形成した第一穴部１１と第二穴部１２に位置合わせして途中まで挿入する。なお、図２及び図５では便座ユニット７が示されているが、ベースプレート１３だけを取り付けるものとする。 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, the cover 4, and the 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 attached.

そして、ベースプレート１３を前方に傾けて、下面に設けた前側爪部２４、２５を前側受け部１５，１６内を通して係止開口１５ａ、１６ａにそれぞれ係合させた後に、ベースプレート１３の後部を下方に回動させる。すると、凹部９の後端側に設けた後側受け部１８の爪受け部１９のテーパ部１９ａに後側スライド爪部２７の爪部２７ｂが当接する。
更にベースプレート１３の後部を降下させると爪受け部１９のテーパ部１９ａにガイドされて後側スライド爪部２７が図７で右方向にスライドしてコイルばね２８を圧縮し、爪部２７ｂが爪受け部１９を乗り越えてその下面側に至るとコイルばね２８の付勢力で爪部２７ｂが爪受け部１９の下面に移動して係合状態になる。 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 Figure 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.

これによって、ベースプレート１３の下面に設けた第一突出部２２と第二突出部２３が凹部９の第一穴部１１と第二穴部１２内に嵌合する。また、ベースプレート１３の前側爪部２４，２５と後側スライド爪部２７は凹部９の前側受け部１５，１６の係止開口１５ａ、１６ａ、爪受け部１９の３カ所で堅固に係合される。しかも、凹部９の前側受け部１５，１６及び爪受け部１９と前側爪部２４，２５及び後側スライド爪部２７の各３点は略半円状の突堤部９ａ近傍に位置する略三角形の各頂点に位置するため、ベースプレート１３を堅固に固定する。
そして、その上にカバー４と便座５を設置し、便座５上に便蓋カバー６を設置することができる。なお、ベースプレート１３を便器本体２の凹部９から取り外す場合には上述の手順と逆の手順で取り外し操作をすればよい。或いは便座ユニット７をまとめて取り外すことができる。 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 the toilet seat 5 can be placed on top of that, and the toilet lid cover 6 can be placed on the toilet seat 5. When removing the base plate 13 from the recess 9 of the toilet body 2, the above-mentioned steps can be reversed to remove the base plate 13. Alternatively, the toilet seat unit 7 can be removed as a whole.

上述のように本実施形態による水洗式便器１によれば、便器本体２の凹部９に形成した第一及び第二穴部１１，１２にベースプレート１３の下面に設けていて機能部３を収納した第一及び第二突出部２２，２３を嵌合したため、水洗式便器１の高さを低くできて圧迫感がなくコンパクトに形成できる。
しかも、ベースプレート１３は便器本体２の後部上面に形成した凹部９内に設置したため、この点でも水洗式便器１の高さを低くできる。また、後側受け部１８の下方に便鉢８内の洗浄用の水を供給する通水部３３を設けたため、この点でも便器本体２の高さを抑えてコンパクトにできる。 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, the base plate 13 is installed in the recess 9 formed in the upper rear surface of the toilet body 2, which also contributes to lowering the height of the flush toilet 1. Also, a water passage 33 that supplies water for flushing the toilet bowl 8 is provided below the rear receiving portion 18, which also contributes to reducing the height of the toilet body 2 and making it compact.

また、凹部９に対するベースプレート１３の固定に際し、ベースプレート１３を下方に押し下げて、平面視で略三角形の頂点位置に設置した前側受け部１５，１６と後側受け部１８に前側爪部２４，２５と後側スライド爪部２７を固定できるため、組み立てが容易で固定状態での前後左右のガタツキを防止できる。
しかも、凹部９に対するベースプレート１３の装着に際しては、前側受け部１５，１６に前側爪部２４，２５を係止させて後部を押し下げることで後側受け部１８の爪受け部１９に後側スライド爪部２７を固定でき、離脱させるにはカバー４の後方の側面４ａを持ち上げて後側スライド爪部２７の操作部２７ｃをスライドすることで取り外し可能であるため、上下方向の着脱操作が容易である。
更に前側受け部１５，１６と後側受け部１８をベースプレート１３を介して陶器製の便器本体２の底面に固定するために反転ナット１７を用いたため、上面側からボルト操作するだけで固定することができる。そのため、狭いトイレ空間での修理や交換作業等に際し、反転ナット１７の着脱操作が容易である。 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 approximately triangle when viewed in a plane, making assembly easy and preventing wobble 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.

本実施形態の水洗式便器１において、ベースプレート１３に第一及び第二突出部２２，２３を設けたため便座ユニット７のスライド移動による着脱はできないが、凹部９の略円弧状の突堤部９ａに合致してこれを囲うように機能部３を覆う円筒状の側面４ａを有するカバー４を設置したため、意匠性が向上する。
更に、ベースプレート１３の前側先端部１３ａと便座５の傾斜部５ａとの隙間ｋを埋めるようにベースプレート１３を覆うカバー４の側部先端４ｂを傾斜部５ａの下面に沿ってテーパ状に延ばしたため、隙間ｋを封止して外側から便鉢８内を目視できないのでこの点でも外観の見栄えが良く意匠性が向上する。 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 portion 9a of the recess 9 is installed, thereby 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.

なお、本発明による水洗式便器１は、上述した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で適宜の変更や置換等が可能である。以下に、本発明の変形例等について説明するが、上述した実施形態で説明した部品や部材等と同一または同様なものについては同一の符号を用いて説明を省略する。 The flush toilet 1 according to the present invention is not limited to the above-described embodiment, and appropriate modifications and substitutions can be made without departing from the spirit of the present invention. Below, modifications of the present invention will be described, but parts and components that are the same as or similar to those described in the above-described embodiment will be designated by the same reference numerals and will not be described again.

例えば、上述した実施形態では便器本体２の後部上面に下方に開口する第一及び第二穴部１１、１２を形成したが、穴部の下端に底部を有する溝部を形成してもよい。また、便器本体２とベースプレート１３に設けた第一及び第二穴部１１、１２と第一及び第二突出部２２，２３を２つ設けたが、穴部とこれに嵌合する突出部は２つに限定されるものではなく、１つでもよく、或いは３つ以上でもよい。
また、第一及び第二突出部２２，２３に収納する機能部３はその一部部品に限定されることなく全部を収納してもよい。この場合には便座５の背面側のカバー４の高さは一層低くなり意匠性と見栄えを向上できる。
また、ベースプレート１３は便器本体２の後部上面に形成した凹部９内に設置するものとしたが、必ずしも凹部９を設置することなく従来技術のように便器本体２の後部上面を平坦面に形成してもよい。 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 is further lowered, 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.

また、上述した実施形態では凹部９に受け部として前側受け部１５，１６、後側受け部１８及び爪受け部１９を設け、ベースプレート１３の下面に係合部として前側爪部２４，２５、後側スライド爪部２７を設けたが、これとは逆に凹部９に前側爪部２４，２５、後側スライド爪部２７を設け、ベースプレート１３に前側受け部１５，１６、後側受け部１８及び爪受け部１９を設けてもよい。また、凹部９の前側に前側受け部１５を１つ設け、後側に他の前側受け部１６と後側受け部１８を設けてもよい。
なお、本実施形態において、前側受け部１５，１６は第一の受け部であり、後側受け部１８及び爪受け部１９が第二の受け部であり、前側爪部２４，２５は第一の係合部、後側スライド爪部２７が第二の係合部である。
また、これら受け部と係合部は平面視で略三角形の各頂点にそれぞれ３点設けたが、これに代えて２点、または略四角形の各頂点に４点またはそれ以上設けて構成してもよく、この場合にはベースプレート１３の保持強度を一層高くできる。 In the above-described embodiment, the front receiving portions 15, 16, the rear receiving portion 18, and the claw receiving portion 19 are provided in the recess 9 as receiving portions, and the front claw portions 24, 25 and the rear sliding claw portion 27 are provided on the underside of the base plate 13 as engaging portions, 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 engaging portions, and the rear slide claw portion 27 is a second engaging portion.
Furthermore, although these receiving portions and engaging portions are provided at three points, one at each vertex of an approximately triangle when viewed in a plane, they may alternatively be provided at two points, or at four or more points, one at each vertex of an approximately quadrangle, in which case the holding strength of the base plate 13 can be further increased.

１水洗式便器
２便器本体
４カバー
４ｂ側部先端
５便座
５ａ傾斜部
９凹部
９ａ突堤部（周壁部）
１１第一穴部
１２第二穴部
１３ベースプレート（ベース部）
１５、１６前側受け部（受け部）
１７反転ナット
１８後側受け部（受け部）
１９爪受け部
２２第一突出部
２３第二突出部
２４、２５前側爪部（被受け部）
２７後側スライド爪部
２７ｂ爪部
２８コイルばね
３３通水部 1 Flush toilet 2 Toilet body 4 Cover 4b Side end 5 Toilet seat 5a Inclined portion 9 Recess 9a Jetty portion (peripheral wall portion)
11 First hole portion 12 Second hole portion 13 Base plate (base portion)
15, 16 Front receiving part (receiving part)
17 Reversal nut 18 Rear receiving portion (receiving portion)
19 Claw receiving portion 22 First protruding portion 23 Second protruding portion 24, 25 Front claw portion (receiving portion)
27 Rear slide claw portion 27b Claw portion 28 Coil spring 33 Water passage portion

Claims

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. The flush toilet according to claim 1, wherein the rear receiving portion has an upright portion that rises from the recess.

The flush toilet according to claim 1, wherein the front receiving portion is disposed in an area lower than an upper surface of the toilet bowl.

The flush toilet according to claim 1 , wherein the base portion is fixed to at least one of the front receiving portion and the rear receiving portion.

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.

The flush toilet according to 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 a substantially triangle in a plan view.

The flush toilet according to claim 1, wherein the front receiving portion is formed with a protrusion for fixing the base portion.

The peripheral wall portion behind the recess is the 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.

2. The flush toilet according to claim 1, wherein the rising portion is disposed so as to rise from below an upper surface of the rear wall of the toilet body to above said upper surface.

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.