【０００１】
【発明の属する技術分野】
本発明は目地部を介して建てられた左右の建物の床目地部を覆う床用目地装置に関する。
【０００２】
【従来の技術】
従来、この種の床用目地装置は左右の建物の目地部側の床躯体に目地部側が開口し、反目地部側が順次上方へ突出する傾斜面に形成された一対の目地プレート支持凹部と、この一対の目地プレート支持凹部および目地部を覆う両側部が該一対の目地プレート支持凹部の傾斜面と対応する傾斜面が形成された目地プレートとで構成されている。
【０００３】
【発明が解決しようとする課題】
従来の床用目地装置は雨水等の水が一対の目地プレート支持凹部内に浸入した場合、排水されず、目地プレートや床躯体を損傷させたり、劣化させてしまうという欠点があった。
【０００４】
本発明は以上のような従来の欠点に鑑み、目地プレート支持凹部内に雨水等が浸入しても、効率よく排水して、目地プレートや床躯体等の損傷や劣化を効率よく防止することができる床用目地装置を提供することを目的としている。
【０００５】
本発明の前記ならびにそのほかの目的と新規な特徴は次の説明を添付図面と照らし合わせて読むと、より完全に明らかになるであろう。
ただし、図面はもっぱら解説のためのものであって、本発明の技術的範囲を限定するものではない。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明は目地部を介して建てられた左右の建物の目地部側の床躯体に排水可能に形成された、目地部側が上方に突出する水切片となる一対の目地プレート支持凹部と、この一対の目地プレート支持凹部の底面に所定間隔に固定された上面がほぼ水平面となる複数個の支持バーと、前記一対の目地プレート支持凹部および前記目地部を覆う両側部寄りの部位が前記一対の目地プレート支持凹部の複数個の支持バーに支持される支持片を有する目地プレートとで床用目地装置を構成している。
【０００７】
【発明の実施の形態】
以下、図面に示す実施の形態より、本発明を詳細に説明する。
【０００８】
図１ないし図８に示す本発明の第１の実施の形態において、１は目地部２を介して建てられた左右の建物、本発明の実施の形態ではビル３とよう壁３Ａの床目地部を覆う本発明の床用目地装置で、この床用目地装置１は左右の建物であるビル３とよう壁３Ａの目地部２側の床躯体３ａ、３ａに排水可能に形成された、目地部側が上方に突出する水切片４、４が形成され、反目地部側が順次上方へ突出する傾斜面５、５に形成された一対の目地プレート支持凹部６、６と、この一対の目地プレート支持凹部６、６の底面に所定間隔に固定された上面がほぼ水平面となる複数個の支持バー７、７と、前記一対の目地プレート支持凹部６、６および前記目地部２を覆う両側部寄りの部位が前記一対の目地プレート支持凹部６、６の複数個の支持バー７、７に水切り可能に支持される支持片８、８を有する目地プレート９と、この目地プレート９の中央部を前記目地部２の中央部に常時位置させる中央維持装置１０とで構成されている。
【０００９】
前記一対の目地プレート支持凹部６、６は図４に示すように、床躯体３ａ、３ａに中央部が最下部に位置するように傾斜面１１、１２に形成された凹部本体１３と、この凹部本体１３の底面を覆うとともに、目地部側に水切片４、反目地部側に傾斜面５が形成された金属材製の支持板１４と、この支持板１４の最下部部位と連通するように所定間隔で形成された、前記床躯体３ａ、３ａに形成された孔１５、１５に挿入される配水管１６とで構成されている。
【００１０】
前記目地プレート９は図５に示すように、両側下部に支持片８、８が突出した四角形状の浅皿状に形成された目地プレート本体１７と、この目地プレート本体１７内にモルタルやコンクリート１８を充填して、表面に固定したタイルや化粧板等の床材１９と、前記目地プレート本体１７の両側部にヒンジ部材２０、２０を介して先端部が上下方向に回動可能に取付けられたカバープレート２１、２１と、前記目地プレート本体１７の一端部の中央部寄りの部位に外方へ突出するように形成された隣り合う目地プレート９、９間をシール剤２２でシールするためシール受け板２３とで構成されている。
【００１１】
前記中央維持装置１０は図６に示すように、両端部が目地部２側の床躯体３ａ、３ａにヒンジ部材２４、２４を介して取付けられた、四角枠が２個形成されたパンタグラフ形状のリンク機構２５と、このリンク機構２５の中央枢支部２６に上下移動可能に枢支された目地プレート９の中央部に固定された中央枢支ピン２７とで構成されている。
【００１２】
上記構成の床用目地装置１は目地プレート９等に雨水等が位置すると、目地プレート９から一対の目地プレート支持凹部６、６の支持板１４、１４上へ流れ、該支持板１４、１４より排水管１６、１６へ流出される。
【００１３】
地震等によって目地部２が広くなった場合には、図７に示すように目地プレート９の両端部の支持片８、８が複数個の支持バー７、７上をスライド移動して、その揺れ動きを吸収する。
また、目地部２が狭くなるように揺れ動いた場合には、図８に示すように一対の目地プレート支持凹部６、６の反目地部側の傾斜面５、５によって目地プレート９の両側部を上方へ押し上げて、その揺れ動きを吸収する。
なお、前述の目地プレート９の移動時には中央維持装置１０によって、目地プレート９の中央部は常時目地部２の中央部に維持されている。
【００１４】
【発明の異なる実施の形態】
次に、図９ないし図２０に示す本発明の異なる実施の形態につき説明する。なお、これらの本発明の異なる実施の形態の説明に当って、前記本発明の第１の実施の形態と同一構成部分には同一符号を付して重複する説明を省略する。
【００１５】
図９ないし図１１に示す本発明の第２の実施の形態において、前記本発明の第１の実施の形態と主に異なる点は、傾斜面５、５側に逆台形状の排水凹部２８、２８を一対の目地プレート支持凹部６Ａ、６Ａに形成するとともに、この一対の目地プレート支持凹部６Ａ、６Ａを金属材製の支持板１４Ａ、１４Ａで覆った点で、このように形成された一対の目地プレート支持凹部６Ａ、６Ａを用いて構成した床用目地装置１Ａにしても、前記本発明の第１の実施の形態と同様な作用効果が得られる。
【００１６】
図１２ないし図１４に示す本発明の第３の実施の形態において、前記本発明の第１の実施の形態と主に異なる点は、支持板を用いない一対の目地プレート支持凹部６、６に水切片４、４が固定された複数個の支持バー７、７を一対の目地プレート支持凹部６、６に固定した点で、このように構成した床用目地装置１Ｂにしても、前記本発明の第１の実施の形態と同様な作用効果が得られる。
なお、本発明の実施の形態では目地部２側の床躯体３ａ、３ａを水切片となるように一対の目地プレート支持凹部を形成してもよい。
【００１７】
図１５ないし図１７に示す本発明の第４の実施の形態において、前記本発明の第１の実施の形態と主に異なる点は、他方の床躯体３ａに目地プレート支持凹部２９を形成し、該目地プレート支持凹部２９に少なくとも２個以上のくさび状の支持体３０、３０を固定するとともに、目地プレート支持凹部２９に支持される目地プレート９Ａに前記支持体３０、３０が挿入された状態で、該目地プレート９Ａの先端部が上下方向に回動可能に支持される支持体挿入凹部３１、３１を形成した点で、このように構成した床用目地装置１Ｃにしてもよい。
なお、目地プレート９Ａをヒンジ部材等を用いて他方の躯体に回動可能に取付けてもよい。
【００１８】
図１８ないし図２０に示す本発明の第５の実施の形態において、前記本発明の第１の実施の形態と主に異なる点は、両側部が一対の目地プレート支持凹部６、６の傾斜面５、５と対応する傾斜面３２、３２に形成された目地プレート９Ｂを用いるとともに、四角枠形状のリンク機構２５Ａと、このリンク機構２５Ａの対向するバー部材２５ａ、２５ａの中央部に枢支ピン３３、３３で枢支された中央部に中央枢支部２６が形成された中央バー部材３４とからなる中央維持装置１０Ａとを用いた点で、このように構成した床用目地装置１Ｄにしても、前記本発明の第１の実施の形態と同様な作用効果が得られる。
【００１９】
なお、前記本発明の各実施の形態ではパンタグラフ形状の中央維持装置１０、１０Ａを用いるものについて説明したが、本発明はこれに限らず、目地プレート９、９Ａの中央部を目地部２の中央部に常時位置させる機構であれば、どんな機構であってもよい。
また、水切片４、４でも目地プレート９、９Ａ、９Ｂを支持できるようにしてもよい。
【００２０】
【発明の効果】
以上の説明から明らかなように、本発明にあっては次に列挙する効果が得られる。
【００２１】
（１）目地部を介して建てられた左右の建物の目地部側の床躯体に排水可能に形成された、目地部側が上方に突出する水切片となる一対の目地プレート支持凹部と、この一対の目地プレート支持凹部の底面に所定間隔に固定された上面がほぼ水平面となる複数個の支持バーと、前記一対の目地プレート支持凹部および前記目地部を覆う両側部寄りの部位が前記一対の目地プレート支持凹部の複数個の支持バーに支持される支持片を有する目地プレートとで構成されているので、目地プレートに雨水が浸入しても、目地プレートより一対の目地プレート支持凹部へ流出し、該一対の目地プレート支持凹部より外部へ排水することができる。
したがって、従来のように一対の目地プレート支持凹部内に雨水等が溜まり、目地プレートや床躯体を損傷させたり、劣化させたりする不具体を防止することができる。
【００２２】
（２）前記（１）によって、雨水等が一対の目地プレート支持凹部に溜まらないので、悪臭や虫等の発生を効率よく阻止でき、清潔に使用することができる。
【００２３】
（３）前記（１）によって、排水できるように一対の目地プレート支持凹部を形成するとともに、目地プレートが左右方向にスライド移動可能に支持するだけでよいので、構造が簡単で、容易に設置することができる。
【００２４】
（４）請求項２、３も前記（１）〜（３）と同様な効果が得られる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態の使用状態の説明図。
【図２】図１の２−２線に沿う拡大断面図。
【図３】図１の３−３線に沿う拡大断面図。
【図４】複数個の支持バーが固定された目地プレート支持凹部の説明図。
【図５】本発明の第１の実施の形態の目地プレートの説明図。
【図６】本発明の第１の実施の形態の中央維持装置の説明図。
【図７】本発明の第１の実施の形態の目地部が広くなった動作説明図。
【図８】本発明の第１の実施の形態の目地部が狭くなった動作説明図。
【図９】本発明の第２の実施の使用状態の説明図。
【図１０】図９の１０−１０線に沿う拡大断面図。
【図１１】複数個の支持バーが固定された目地プレート支持凹部の説明図。
【図１２】本発明の第３の実施の使用状態の説明図。
【図１３】図１２の１３−１３線に沿う拡大断面図。
【図１４】複数個の支持バーが固定された目地プレート支持凹部の説明図。
【図１５】本発明の第４の実施の使用状態の説明図。
【図１６】図１５の１６−１６線に沿う拡大断面図。
【図１７】本発明の第４の実施の目地部が狭くなった動作説明図。
【図１８】本発明の第５の実施の使用状態の説明図。
【図１９】図１８の１９−１９線に沿う拡大断面図。
【図２０】本発明の第５の実施の中央維持装置の説明図。
【符号の説明】
１、１Ａ、１Ｂ、１Ｃ、１Ｄ：床用目地装置、
２：目地部、 ３：建物としてのビル、
３Ａ：建物としてのよう壁、
４：水切片、 ５：傾斜面、
６、６Ａ：目地プレート支持凹部、
７：支持バー、 ８：支持片、
９、９Ａ、９Ｂ：目地プレート、
１０、１０Ａ：中央維持装置、
１１、１２：傾斜面、 １３：凹部本体、
１４、１４Ａ：支持板、 １５：孔、
１６：配水管、 １７：目地プレート本体、
１８：モルタルやコンクリート、
１９：床材、 ２０：ヒンジ部材、
２１：カバープレート、 ２２：シール剤、
２３：シール受け板、 ２４：ヒンジ部材、
２５、２５Ａ：リンク機構、
２６：中央枢支部、 ２７：中央枢支ピン、
２８：排水凹部、 ２９：目地プレート支持凹部、
３０：支持体、 ３１：支持体挿入凹部、
３２：傾斜面、 ３３：枢支ピン、
３４：中央バー部材。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a floor joint device for covering floor joints of left and right buildings built via joints.
[0002]
[Prior art]
Conventionally, this kind of floor joint device is a pair of joint plate support recesses formed on the inclined surface of the joint of the left and right buildings on the joint frame side of the left and right buildings, and the joint surface side is sequentially projected upward. The pair of joint plate supporting concave portions and both side portions covering the joint portions are constituted by joint plates formed with inclined surfaces corresponding to the inclined surfaces of the pair of joint plate supporting concave portions.
[0003]
[Problems to be solved by the invention]
The conventional floor joint device has a drawback that when water such as rainwater enters the pair of joint plate supporting recesses, it is not drained, and the joint plate and the floor frame are damaged or deteriorated.
[0004]
The present invention has been made in view of the above-mentioned conventional drawbacks, and even if rainwater or the like enters the joint plate support recess, it is possible to efficiently drain the water and efficiently prevent damage or deterioration of the joint plate or the floor frame. It is an object of the present invention to provide a floor joint device that can be used.
[0005]
The above and other objects and novel features of the present invention will become more completely apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are merely for explanation and do not limit the technical scope of the present invention.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a pair of drain sections formed on a floor skeleton on the joint part side of the left and right buildings built through the joint part so that the joint part side becomes a water piece protruding upward. Joint plate supporting recesses, a plurality of support bars fixed to the bottom surfaces of the pair of joint plate supporting recesses at predetermined intervals and having upper surfaces substantially in a horizontal plane, and both side portions covering the pair of joint plate supporting recesses and the joint portion A joint part having a support piece whose nearer part is supported by a plurality of support bars of the pair of joint plate supporting recesses constitutes a floor joint device.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.
[0008]
In the first embodiment of the present invention shown in FIGS. 1 to 8, reference numeral 1 denotes left and right buildings built via joints 2, and in the embodiment of the present invention, a building 3 and a floor joint of a wall 3 </ b> A. In the joint device for floors of the present invention, the joint device for floors 1 is formed so as to be able to drain the floor 3a, 3a on the joint portion 2 side of the wall 3A such as the building 3 as the left and right buildings. A pair of joint plate supporting recesses 6, 6 are formed on inclined surfaces 5, 5 that are formed with water cutting pieces 4, 4 whose sides protrude upward, and the opposite joint portion side sequentially protrudes upward, and the pair of joint plate supporting recesses. A plurality of support bars 7, 7 fixed at predetermined intervals to the bottom surfaces of the joints 6 and whose upper surfaces are substantially horizontal, and portions near both side portions that cover the pair of joint plate supporting recesses 6, 6 and the joint portion 2; Are a plurality of support bars of the pair of joint plate support recesses 6, 6. , 7 and a joint plate 9 having support pieces 8, 8 which are supported so as to be able to drain, and a central maintenance device 10 which always positions the center of the joint plate 9 at the center of the joint 2. .
[0009]
As shown in FIG. 4, the pair of joint plate support recesses 6, 6 are recessed bodies 13 formed on the inclined surfaces 11, 12 such that the central portions thereof are located at the lowest positions on the floor frames 3a, 3a. A metal support plate 14 that covers the bottom surface of the main body 13, has a water piece 4 on the joint side, and a slope 5 on the opposite joint side, and communicates with the lowermost part of the support plate 14. And water distribution pipes 16 formed at predetermined intervals and inserted into holes 15, 15 formed in the floor frames 3a, 3a.
[0010]
As shown in FIG. 5, the joint plate 9 has a joint plate main body 17 formed in the shape of a rectangular shallow dish with supporting pieces 8, 8 protruding from the lower portions on both sides, and a mortar or concrete 18 in the joint plate main body 17. And a floor member 19 such as a tile or a decorative board fixed to the surface, and a front end portion rotatably mounted on both sides of the joint plate main body 17 via hinge members 20 and 20 in a vertical direction. A seal receiver for sealing between the cover plates 21, 21 and the adjacent joint plates 9, which are formed so as to protrude outward at a portion near the center of one end of the joint plate main body 17, with a sealant 22. And a plate 23.
[0011]
As shown in FIG. 6, the center maintenance device 10 has a pantograph shape in which two square frames are formed and both ends are attached to the floor frames 3 a, 3 a on the joint portion 2 side via hinge members 24, 24. The link mechanism 25 includes a center pivot pin 27 fixed to the center of the joint plate 9 pivotally supported by a central pivot 26 of the link mechanism 25 so as to be vertically movable.
[0012]
When rainwater or the like is located on the joint plate 9 or the like, the floor joint device 1 having the above-described configuration flows from the joint plate 9 onto the support plates 14 of the pair of joint plate supporting recesses 6, 6, and from the support plates 14, 14. It is discharged to drain pipes 16 and 16.
[0013]
When the joint 2 is widened due to an earthquake or the like, the support pieces 8 at both ends of the joint plate 9 slide on the plurality of support bars 7 as shown in FIG. Absorb.
When the joint portion 2 swings so as to become narrower, as shown in FIG. 8, both side portions of the joint plate 9 are separated by the inclined surfaces 5, 5 on the opposite joint side of the pair of joint plate supporting concave portions 6, 6. Push up to absorb the swaying motion.
When the joint plate 9 is moved, the central part of the joint plate 9 is always maintained at the central part of the joint part 2 by the central maintenance device 10.
[0014]
Different Embodiments of the Invention
Next, different embodiments of the present invention shown in FIGS. 9 to 20 will be described. In the description of the different embodiments of the present invention, the same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and redundant description will be omitted.
[0015]
In the second embodiment of the present invention shown in FIGS. 9 to 11, the main difference from the first embodiment of the present invention is that the trapezoidal drain recess 28 is provided on the inclined surfaces 5 and 5. 28 are formed in the pair of joint plate supporting recesses 6A, 6A, and the pair of joint plate supporting recesses 6A, 6A are covered with metal supporting plates 14A, 14A. The same effect as that of the first embodiment of the present invention can be obtained also in the joint device for floor 1A constituted by the joint plate supporting concave portions 6A, 6A.
[0016]
The third embodiment of the present invention shown in FIGS. 12 to 14 is mainly different from the first embodiment of the present invention in that a pair of joint plate supporting concave portions 6 and 6 without using a supporting plate is provided. The present invention is also applied to the floor joint device 1B having such a structure in that the plurality of support bars 7, 7 to which the water slices 4, 4 are fixed are fixed to the pair of joint plate supporting concave portions 6, 6, respectively. The same operation and effect as those of the first embodiment can be obtained.
In the embodiment of the present invention, a pair of joint plate supporting concave portions may be formed so that the floor frames 3a and 3a on the joint portion 2 side become water slices.
[0017]
The fourth embodiment of the present invention shown in FIGS. 15 to 17 is different from the first embodiment of the present invention mainly in that a joint plate supporting recess 29 is formed in the other floor frame 3a. At least two or more wedge-shaped supports 30, 30 are fixed to the joint plate support recess 29, and the support members 30, 30 are inserted into the joint plate 9A supported by the joint plate support recess 29. In addition, the floor joint device 1C having the above-described configuration may be configured in such a manner that the support member insertion concave portions 31, 31 in which the tip end of the joint plate 9A is rotatably supported in the vertical direction are formed.
The joint plate 9A may be rotatably attached to the other skeleton using a hinge member or the like.
[0018]
The fifth embodiment of the present invention shown in FIGS. 18 to 20 is mainly different from the first embodiment of the present invention in that the inclined surfaces of the pair of joint plate supporting recesses 6 on both sides are provided. The joint plates 9B formed on the inclined surfaces 32, 32 corresponding to 5, 5 are used, and a rectangular frame-shaped link mechanism 25A is provided. A pivot pin is provided at the center of the opposed bar members 25a, 25a of the link mechanism 25A. The floor joint device 1D thus configured also uses a central maintenance device 10A including a central bar member 34 having a central pivot portion 26 formed at a central portion pivotally supported by 33, 33. The same operation and effect as those of the first embodiment of the present invention can be obtained.
[0019]
Although the embodiments using the pantograph-shaped center maintaining devices 10 and 10A have been described in the respective embodiments of the present invention, the present invention is not limited to this, and the center portions of the joint plates 9 and 9A may be positioned at the center of the joint portion 2. Any mechanism may be used as long as it is a mechanism that is always positioned in the unit.
Further, the joint pieces 9, 9A, 9B may be supported by the water slices 4, 4.
[0020]
【The invention's effect】
As is clear from the above description, the following effects can be obtained in the present invention.
[0021]
(1) A pair of joint plate supporting recesses, which are formed as drainable pieces protruding upward on the joint side and formed on a floor frame on the joint side of the left and right buildings built via the joint, and the pair of joint recesses. A plurality of support bars fixed to the bottom surface of the joint plate supporting concave portion at predetermined intervals and having upper surfaces substantially in a horizontal plane, and a pair of joint bars that cover the pair of joint plate supporting concave portions and the joint portion are located closer to both sides. Since it is composed of a joint plate having a support piece supported by a plurality of support bars of the plate support concave portion, even if rainwater enters the joint plate, it flows out of the joint plate to a pair of joint plate supporting concave portions, Water can be drained to the outside from the pair of joint plate supporting recesses.
Therefore, it is possible to prevent the rainwater or the like from accumulating in the pair of joint plate supporting recesses as in the related art, thereby preventing the joint plate and the floor frame from being damaged or deteriorated.
[0022]
(2) According to the above (1), since rainwater and the like do not accumulate in the pair of joint plate supporting recesses, generation of offensive odor, insects and the like can be efficiently prevented, and the device can be used cleanly.
[0023]
(3) According to the above (1), a pair of joint plate supporting recesses are formed so as to allow drainage, and the joint plate only needs to be supported so as to be slidable in the left-right direction, so that the structure is simple and easily installed. be able to.
[0024]
(4) Claims 2 and 3 also provide the same effects as (1) to (3).
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a use state according to a first embodiment of the present invention.
FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.
FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 1;
FIG. 4 is an explanatory view of a joint plate supporting concave portion to which a plurality of supporting bars are fixed.
FIG. 5 is an explanatory diagram of a joint plate according to the first embodiment of the present invention.
FIG. 6 is an explanatory diagram of a central maintenance device according to the first embodiment of the present invention.
FIG. 7 is an operation explanatory diagram of the first embodiment of the present invention in which a joint portion is widened;
FIG. 8 is an explanatory diagram of the operation of the first embodiment of the present invention in which the joint is narrowed.
FIG. 9 is an explanatory diagram of a use state according to the second embodiment of the present invention.
FIG. 10 is an enlarged sectional view taken along line 10-10 of FIG. 9;
FIG. 11 is an explanatory view of a joint plate supporting concave portion to which a plurality of supporting bars are fixed.
FIG. 12 is an explanatory diagram of a use state according to the third embodiment of the present invention.
FIG. 13 is an enlarged sectional view taken along line 13-13 of FIG. 12;
FIG. 14 is an explanatory diagram of a joint plate supporting concave portion to which a plurality of supporting bars are fixed.
FIG. 15 is an explanatory diagram of a use state according to the fourth embodiment of the present invention.
FIG. 16 is an enlarged sectional view taken along line 16-16 in FIG. 15;
FIG. 17 is an explanatory view of the operation of the fourth embodiment of the present invention in which the joints are narrowed.
FIG. 18 is an explanatory diagram of a use state according to a fifth embodiment of the present invention.
19 is an enlarged sectional view taken along line 19-19 in FIG.
FIG. 20 is an explanatory diagram of a central maintenance device according to a fifth embodiment of the present invention.
[Explanation of symbols]
1, 1A, 1B, 1C, 1D: joint device for floor,
2: joint, 3: building as a building,
3A: wall as a building,
4: water slice, 5: slope,
6, 6A: joint plate supporting recess,
7: support bar, 8: support piece,
9, 9A, 9B: joint plate,
10, 10A: Central maintenance device,
11, 12: inclined surface, 13: concave body,
14, 14A: support plate, 15: hole,
16: water pipe, 17: joint plate body,
18: Mortar and concrete,
19: floor material, 20: hinge member,
21: cover plate, 22: sealant,
23: seal receiving plate, 24: hinge member,
25, 25A: link mechanism,
26: Central pivot, 27: Central pivot pin,
28: Drain recess, 29: Joint plate support recess,
30: support, 31: support insertion recess,
32: inclined surface, 33: pivot pin,
34: Central bar member.