JP3747363B2

JP3747363B2 - Exterior wall joint seal structure

Info

Publication number: JP3747363B2
Application number: JP2001318013A
Authority: JP
Inventors: 芳美川本
Original assignee: Nishikawa Rubber Co Ltd
Current assignee: Nishikawa Rubber Co Ltd
Priority date: 2001-10-16
Filing date: 2001-10-16
Publication date: 2006-02-22
Anticipated expiration: 2021-10-16
Also published as: JP2003119916A

Description

【０００１】
【発明の属する技術分野】
本発明は、建物の外壁パネル間に形成される目地を確実にシールすることのできる目地シール構造に関するものである。
【０００２】
【従来の技術】
図１乃至図３を参照して説明する。住宅などの建物の外壁パネル１，１間には縦目地２と横目地３が形成されるが、一般に、縦目地２は乾式目地材である定型ガスケット４０によってシールし、横目地３は、その形状が複雑になる箇所が多いため等の理由で湿式目地材で、後面をバッカー４２によって支持される不定型シール材４１によってシールしている。
【０００３】
この中で、定型ガスケット４０は経年変化や施工不良等に起因して、その表面より内側に水が侵入することがあっても、円滑に排水できる構造であることが必要である。
【０００４】
【発明が解決しようとする課題】
しかし、従来の外壁目地シール構造においては、縦目地２と横目地３とが交差する部分（交差部４）では、縦目地２をシールしている定型ガスケット４０を、横目地３をシールしている不定型シール材４１で覆う、いわゆる横目地勝ちの納まりとしているために外壁パネル１を傷めてしまい易いといった問題がある。
【０００５】
すなわち、定型ガスケット４０の内部（リップ４０ａ間など）に水が侵入して流下した際、交差部４において不定型シール材４１と交差する箇所では、定型ガスケット４０のリップ４０ａが不定型シール材４１に埋まった状態にあることから、その水が交差箇所で停滞してしまう。そして、外壁パネル１に傷がある場合、水がその傷に入り込み、当該外壁パネル１を傷めてしまうことになる。
【０００６】
本発明はこうした問題に鑑み創案されたもので、水が、縦目地をシールする定型ガスケットを越えて侵入しても、円滑に排水することができ、かつ、十分なシール性を発揮することのできる外壁目地シール構造を提供することを課題とする。
【０００７】
【課題を解決するための手段】
第一の発明を図４乃至図１１を参照して説明する。本発明に係る外壁目地シール構造は、上下左右に隣接する四枚の外壁パネル１，…，１によって形成される縦目地２と横目地３をシールすべく、交差シール部１０，縦シール部２０および横シール部３０を備えた外壁目地シール構造であり、前記交差シール部１０を，縦目地２と横目地３が交差する交差部４に設けるものとし，上下の外壁パネル１，１間に配置する水平材１１から，左右の外壁パネル１，１間に配置する垂直材１２を立設し，かつ，水平材１１の前部に縦目地２と略等しい横幅の凹部１３を形成し、前記縦シール部２０を，縦目地２の深さ方向略中間部に沿い且つ水平材１１の凹部１３に侵入させた後側ガスケット２１と，縦目地２の前部に沿って，後側ガスケット２１との間に排水空間２４を開けて設けた前側ガスケット２３とで構成し、前記横シール部３０を，横目地３の深さ方向略中間部に，その先端を水平材１１の両側面に弾接させて設けた横目地バッカー３１と，横目地３の前部に設けた不定型シール材３２とで構成し、前記排水空間２４と前記凹部１３とで排水路５を形成してなるものである。
【０００８】
第二の発明を、図４乃至図８・図１２乃至図１４を参照して説明する。本発明に係る外壁目地シール構造は、上下左右に隣接する四枚の外壁パネル１，…，１によって形成される縦目地２と横目地３をシールすべく、交差シール部１０，縦シール部２０および横シール部３０を備えた外壁目地シール構造であり、前記交差シール部１０を，縦目地２と横目地３が交差する交差部４に設けるものとし，上下の外壁パネル１，１間に配置する水平材１１から，左右の外壁パネル１，１間に配置する垂直材１２を立設し，かつ，水平材１１の前部に縦目地２と略等しい横幅の凹部１３を形成し、前記縦シール部２０を，縦目地２の深さ方向略中間部に沿って設けると共に，その下部を水平材１１の凹部１３に侵入させた後上側ガスケット２１ａと，該後上側ガスケット２１ａの直下に，上端部を該後上側ガスケット２１ａの下端部後面に当接して設けた後下側ガスケット２１ｂと，縦目地２の前部に沿って，後上側ガスケット２１ａおよび後下側ガスケット２１ｂとの間に排水空間２４を開けて設けた前側ガスケット２３とで構成し、前記横シール部３０を，横目地３の深さ方向略中間部に，その先端を水平材１１の両側面に弾接させて設けた横目地バッカー３１と，横目地バッカー３１の前部に設けた不定型シール材３２とで構成し、前記排水空間２４と前記凹部１３とで排水路５を形成してなるものである。
【０００９】
第三の発明は、第一及び第二の発明において、図１５に示す如く、水平材１１と垂直材１２とを別部分で構成したものである。第四の発明は、第一乃至第三の発明において図１６に示す如く前側ガスケット２３ａ，２３ｂが交差部４で上下に分割されているものである。
【００１０】
【発明の実施の形態】
本発明に係る外壁目地シール構造の第一の発明の一実施形態を、図４乃至図１１に示す。この内、図７乃至図９は組付け工程の一例を示す。この外壁目地シール構造は、上下左右に隣接する四枚の外壁パネル１，…，１によって形成される縦目地２と横目地３をシールすべく、交差シール部１０，縦シール部２０および横シール部３０を備えている。なお、外壁パネル１は、図６に示すように、外壁部１ａと本体部１ｂとで構成され、両者の間には止水シート６が設けられている。また、各外壁パネル１の角部には、図１０及び図１１に示すように、コーナー防水テープ７が貼着されている。
【００１１】
そして、交差シール部１０を、縦目地２と横目地３が交差する交差部４に設けるものとし、上下の外壁パネル１，１間に配置する水平材１１から、左右の外壁パネル１，１間に配置する垂直材１２を立設し、かつ、水平材１１の前部に縦目地２と略等しい横幅の凹部１３を形成して構成している。
【００１２】
また、縦シール部２０を、後側ガスケット２１および前側ガスケット２３で構成している。後側ガスケット２１は、縦目地２の深さ方向略中間部に沿って設けると共に、交差シール部１０の凹部１３に侵入させて配置する。そして、前側ガスケット２３は、縦目地２の前部に沿って、後側ガスケット２１との間に排水空間２４を開けて配置する。
【００１３】
また、横シール部３０を、横目地バッカー３１と不定型シール材３２とで構成している。横目地バッカー３１は、横目地３の深さ方向略中間部（前部と後部との中間部分）に、その先端を水平材１１の両側面に弾接させた状態で設けたものである。不定型シール材３２は、横目地バッカー３１の前部に設けた部材である。
【００１４】
こうした構成とすることによって、交差部４において、前側ガスケット２３を外表面に位置させた、いわゆる縦目地勝ちの納まりとし、かつ、排水空間２４と凹部１３とで垂直方向に連続する排水路５を形成している。
【００１５】
当該外壁目地シール構造の作用について説明する。雨水等の水Ｗが前側ガスケット２３のリップ間などに侵入して流下した際縦目地勝ちの納まりとしているため、交差部４で停滞することなく流下する。雨水等の水Ｗが前側ガスケット２３を越えその左右の外壁パネル１との間を通って縦目地２内に侵入すると、その水Ｗは、前側ガスケット２３と後側ガスケット２１との間に形成された排水空間２４に沿って流下する。
【００１６】
この際、縦目地２と横目地３が交差する交差部４においては、交差シール部１０が設けられ、また、その水平材１１に形成した凹部１３と排水空間２４とで連続した排水路５を形成しているので、当該水Ｗはこの排水路５を通って円滑に流下し、基礎土台等の水切り材まで流下し屋外側へ排出される。すなわち、この凹部１３によって縦シール部２０と横シール部３０とを遮断した部分を形成し、この遮断部分（凹部１３）に水Ｗを通過させる。これによって、水Ｗは、この交差部４に滞留することがなく流下し、外壁パネル１に傷が存在していても、その傷に侵入して外壁パネル１を損傷させることがない。
【００１７】
また、この外壁目地シール構造においては、縦目地２と横目地３のそれぞれに多重にシール部材を配置しているので、シール性を大きく向上させることができる。すなわち、縦目地２においては、前側ガスケット２３を一次止水材とし、後側ガスケット２１を二次止水材とし、さらに、交差シール部１０の垂直材１２を三次止水材とする三重のシール機能を持たせている。この交差シール部１０を設けたことによって、施工のバラツキ等により、後側ガスケット２１と、水平材１１との間に隙間が発生することがあっても、当該交差シール部１０の垂直材１２によって水Ｗのそれ以上の侵入を未然に阻止することができる。
【００１８】
また、横目地３にあっては、不定型シール材３２を一次止水材とし、横目地バッカー３１および交差シール部１０の水平材１１を二次止水材として、二重のシール機能を持たせている。特に、交差シール部１０の水平材１１は、上下の外壁パネル１，１に強く挟まれるので、横目地３の後部で、当該横目地３に水Ｗが侵入し得る隙間を塞ぐ役目を果たす。これによって、シール性がさらに高められる。
【００１９】
なお、横目地バッカー３１は、不定型シール材３２を支持するバッカーとしてのはたらきの他、止水材自体としての役目も果たす。従って、不定型シール材３２に切れが発生した場合でも、二次止水材である横目地バッカー３１によって防水できる。
【００２０】
第二の発明の実施例を図４乃至図８・図１２乃至図１４を参考にして説明する。第一の発明における後側ガスケット２１を、第二の発明においては後上側ガスケット２１ａと，後下側ガスケット２１ｂで構成している。この内、後上側ガスケット２１ａは、縦目地２の深さ方向略中間部に沿って設けると共に、その下部を水平材１１の凹部１３に侵入させて配置する。また、後下側ガスケット２１ｂは、後上側ガスケット２１ａの直下に、上端部をその後上側ガスケット２１ａの下端部後面に当接して配置する。後側ガスケット２１を上下に分割２１ａ，２１ｂすると、取付け作業性は向上するが、シール性は若干低下する。
【００２１】
図１５に示す第三の発明の実施例は、水平材１１と垂直材１２とを別部品で構成したものであるが、両面テープや接着剤等にて一体化させたものを使用してもよい。また、別部品とした垂直材１２を外壁パネル１に両面テープ等により先付けし、外壁パネル１を組付けと同時に垂直材１２と水平材１１を合わせるようにしてもよい。この際、垂直材１２に対して水平材１１がラップするように外壁パネル１下端より垂直材１２を少し喰出させておくことが好ましい。
【００２２】
図１６に示す第四の発明の実施例は、第一乃至第三の発明における前側ガスケット２３を交差部４で前上側ガスケット２３ａと前下側ガスケット２３ｂとに分割したものである。前側ガスケット２３を上下に分割２３ａ，２３ｂすると、取付け作業性は向上するが、シール性と外観は若干低下する。
【００２３】
【発明の効果】
本発明に係る外壁目地シール構造は、縦目地２と横目地３が交差する交差部４に交差シール部１０を設け、その水平材１１に形成した凹部１３と、前側ガスケット２３と後側ガスケット２１との間に形成した排水空間２４とで、連続した排水路５を形成したので、侵入した水Ｗをこの排水路５によって円滑に流下させ外に排出することができる。これによって、外壁パネル１を水Ｗによって損傷させることがない。
【００２４】
また、この外壁目地シール構造は、縦シール部２０に二重のシール機能を持たせる（特に交差部に至っては三重のシール機能を持たせている。）と共に、横シール部３０に二重のシール機能を持たせているので、高いシール性を発揮することができる。
【図面の簡単な説明】
【図１】従来例を示す正面斜視図である。
【図２】図１におけるＡ−Ａ線断面図である。
【図３】図１におけるＢ−Ｂ線断面図である。
【図４】本発明の実施形態を示す正面図である。
【図５】本発明の図４におけるＣ−Ｃ線断面図である。
【図６】本発明の図４におけるＤ−Ｄ線断面図である。
【図７】第一及び第二の発明の実施形態の一部を示す分解斜視図である。
【図８】第一及び第二の発明の実施形態の一部を示す斜視図である。
【図９】第一の発明の実施形態を示す分解斜視図である。
【図１０】第一の発明の図４におけるＥ−Ｅ線断面図である。
【図１１】第一の発明の図４におけるＦ−Ｆ線断面図である。
【図１２】第二の発明の実施形態を示す分解斜視図である。
【図１３】第二の発明の図４におけるＥ−Ｅ線断面図である。
【図１４】第二の発明の図４におけるＦ−Ｆ線断面図である。
【図１５】第三の発明の実施形態を示す一部の分解斜視図である。
【図１６】第四の発明の図４におけるＥ−Ｅ線断面図である。
【符号の説明】
１外壁パネル
１ａ外壁部
１ｂ本体部
２縦目地
３横目地
４交差部
５排水路
６止水シート
７コーナー防水テープ
１０交差シール部
１１水平材
１２垂直材
１３凹部
２０縦シール部
２１後側ガスケット
２１ａ後上側ガスケット
２１ｂ後下側ガスケット
２３前側ガスケット
２３ａ前上側ガスケット
２３ｂ前下側ガスケット
２４排水空間
３０横シール部
３１横目地バッカー
３２不定型シール材
４０定型ガスケット
４０ａリップ
４１不定型シール材
４２バッカー
Ｗ水[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint sealing structure that can reliably seal joints formed between outer wall panels of a building.
[0002]
[Prior art]
This will be described with reference to FIGS. A vertical joint 2 and a horizontal joint 3 are formed between the outer wall panels 1 and 1 of a building such as a house. In general, the vertical joint 2 is sealed by a fixed gasket 40 which is a dry joint material. The back surface is sealed with an indeterminate sealing material 41 supported by a backer 42 with a wet joint material because the shape is complicated.
[0003]
Among these, the fixed gasket 40 needs to have a structure capable of smoothly draining water even when water intrudes into the inside of the surface due to secular change or poor construction.
[0004]
[Problems to be solved by the invention]
However, in the conventional outer wall joint seal structure, at the portion where the vertical joint 2 and the horizontal joint 3 intersect (intersection 4), the fixed gasket 40 that seals the vertical joint 2 is sealed with the horizontal joint 3. There is a problem that the outer wall panel 1 is likely to be damaged because it is covered with so-called horizontal joints that are covered with the irregular sealing material 41.
[0005]
That is, when water enters the inside of the fixed gasket 40 (between the lips 40a, etc.) and flows down, the lip 40a of the fixed gasket 40 is in contact with the amorphous seal material 41 at the intersection 4 where it intersects the amorphous seal material 41. The water is stagnant at the intersection because it is buried in the water. And when the outer wall panel 1 has a damage | wound, water will penetrate into the damage | wound and the said outer wall panel 1 will be damaged.
[0006]
The present invention was devised in view of these problems, and even if water enters beyond a fixed gasket that seals the vertical joint, it can be drained smoothly and exhibits sufficient sealing performance. An object of the present invention is to provide an outer wall joint seal structure that can be used.
[0007]
[Means for Solving the Problems]
The first invention will be described with reference to FIGS. The outer wall joint seal structure according to the present invention has a cross seal portion 10 and a vertical seal portion 20 to seal a vertical joint 2 and a horizontal joint 3 formed by four outer wall panels 1,. And an outer wall joint seal structure having a horizontal seal portion 30, wherein the cross seal portion 10 is provided at an intersection portion 4 where the vertical joint 2 and the horizontal joint 3 intersect and is disposed between the upper and lower outer wall panels 1 and 1. A vertical member 12 disposed between the left and right outer wall panels 1 and 1 is erected from the horizontal member 11 to be formed, and a recess 13 having a width substantially equal to the vertical joint 2 is formed in the front portion of the horizontal member 11, A rear gasket 21 that has the seal portion 20 along the substantially middle portion in the depth direction of the vertical joint 2 and enters the concave portion 13 of the horizontal member 11, and the rear gasket 21 along the front portion of the vertical joint 2. Front gasket with drainage space 24 in between 3, the horizontal seal portion 30 is provided at a substantially intermediate portion in the depth direction of the horizontal joint 3, and its tip is elastically brought into contact with both side surfaces of the horizontal member 11, and the horizontal joint 3 The drainage channel 5 is formed by the drainage space 24 and the recess 13.
[0008]
The second invention will be described with reference to FIGS. 4 to 8 and FIGS. 12 to 14. The outer wall joint seal structure according to the present invention has a cross seal portion 10 and a vertical seal portion 20 to seal a vertical joint 2 and a horizontal joint 3 formed by four outer wall panels 1,. And an outer wall joint seal structure having a horizontal seal portion 30, wherein the cross seal portion 10 is provided at an intersection portion 4 where the vertical joint 2 and the horizontal joint 3 intersect and is disposed between the upper and lower outer wall panels 1 and 1. A vertical member 12 disposed between the left and right outer wall panels 1 and 1 is erected from the horizontal member 11 to be formed, and a recess 13 having a width substantially equal to the vertical joint 2 is formed in the front portion of the horizontal member 11, The seal portion 20 is provided along the substantially middle portion of the vertical joint 2 in the depth direction, and the lower upper gasket 21a having the lower portion penetrated into the concave portion 13 of the horizontal member 11, and the upper end directly below the rear upper gasket 21a. The rear upper gasket 21 The rear lower gasket 21b provided in contact with the rear surface of the lower end of the front and the front side provided with a drainage space 24 between the rear upper gasket 21a and the rear lower gasket 21b along the front of the vertical joint 2 A horizontal joint backer 31 comprising a gasket 23, the horizontal seal portion 30 being provided at a substantially intermediate portion in the depth direction of the horizontal joint 3 and having its tips elastically contacting both side surfaces of the horizontal member 11, and a horizontal joint The drainage channel 5 is formed by the drainage space 24 and the concave portion 13.
[0009]
In a third invention, as shown in FIG. 15, in the first and second inventions, the horizontal member 11 and the vertical member 12 are configured as separate parts. In the fourth invention, the front gaskets 23a and 23b are divided vertically at the intersection 4 as shown in FIG.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
One embodiment of the first invention of the outer wall joint seal structure according to the present invention is shown in FIGS. 7 to 9 show an example of the assembly process. This outer wall joint seal structure has a cross seal portion 10, a vertical seal portion 20 and a horizontal seal to seal a vertical joint 2 and a horizontal joint 3 formed by four outer wall panels 1,. The unit 30 is provided. In addition, as shown in FIG. 6, the outer wall panel 1 is comprised by the outer wall part 1a and the main-body part 1b, and the water stop sheet | seat 6 is provided between both. Further, as shown in FIGS. 10 and 11, a corner waterproof tape 7 is attached to the corner portion of each outer wall panel 1.
[0011]
And the cross seal part 10 shall be provided in the crossing part 4 where the vertical joint 2 and the horizontal joint 3 cross, and from the horizontal material 11 arrange | positioned between the upper and lower outer wall panels 1 and 1, between the left and right outer wall panels 1 and 1. The vertical member 12 is arranged upright, and the front portion of the horizontal member 11 is formed with a recess 13 having a width substantially equal to the vertical joint 2.
[0012]
Further, the vertical seal portion 20 is constituted by a rear gasket 21 and a front gasket 23. The rear gasket 21 is provided along a substantially intermediate portion in the depth direction of the vertical joint 2 and is disposed so as to enter the concave portion 13 of the cross seal portion 10. The front gasket 23 is disposed along the front portion of the vertical joint 2 with a drainage space 24 between the front gasket 23 and the rear gasket 21.
[0013]
Further, the horizontal seal portion 30 is constituted by a horizontal joint backer 31 and an indeterminate seal material 32. The horizontal joint backer 31 is provided at a substantially intermediate part in the depth direction of the horizontal joint 3 (an intermediate part between the front part and the rear part) with its tip elastically contacting both side surfaces of the horizontal member 11. The indeterminate sealing material 32 is a member provided at the front portion of the horizontal joint backer 31.
[0014]
By adopting such a configuration, the drainage channel 5 which is a so-called vertical joint where the front gasket 23 is positioned on the outer surface at the intersection 4 and which is continuous in the vertical direction between the drainage space 24 and the recess 13 is provided. Forming.
[0015]
The operation of the outer wall joint seal structure will be described. When water W such as rainwater enters between the lips of the front gasket 23 and flows down, the vertical joint wins, so it flows down without stagnation at the intersection 4. When water W such as rainwater passes through the front gasket 23 and between the left and right outer wall panels 1 and enters the vertical joint 2, the water W is formed between the front gasket 23 and the rear gasket 21. It flows down along the drainage space 24.
[0016]
At this time, at the intersection 4 where the vertical joint 2 and the horizontal joint 3 intersect, an intersection seal portion 10 is provided, and a continuous drainage channel 5 is formed by the recess 13 formed in the horizontal member 11 and the drainage space 24. Since it forms, the said water W flows smoothly through this drainage channel 5, flows down to draining materials, such as a foundation foundation, and is discharged | emitted on the outdoor side. That is, a portion where the vertical seal portion 20 and the horizontal seal portion 30 are blocked by the concave portion 13 is formed, and the water W is allowed to pass through the blocked portion (the concave portion 13). As a result, the water W flows down without staying at the intersecting portion 4, and even if the outer wall panel 1 has a flaw, it does not enter the flaw and damage the outer wall panel 1.
[0017]
Moreover, in this outer wall joint sealing structure, since the sealing member is multiply arranged in each of the vertical joint 2 and the horizontal joint 3, the sealing performance can be greatly improved. That is, in the vertical joint 2, a triple seal in which the front gasket 23 is a primary water stop material, the rear gasket 21 is a secondary water stop material, and the vertical member 12 of the cross seal portion 10 is a tertiary water stop material. It has a function. Even if a gap is generated between the rear gasket 21 and the horizontal member 11 due to variations in construction due to the provision of the cross seal portion 10, the vertical material 12 of the cross seal portion 10 Further intrusion of the water W can be prevented in advance.
[0018]
Further, in the horizontal joint 3, the indeterminate sealing material 32 is used as the primary water-stopping material, and the horizontal joint backer 31 and the horizontal material 11 of the cross seal portion 10 are used as the secondary water-stopping material to provide a double sealing function. It is In particular, since the horizontal member 11 of the cross seal portion 10 is strongly sandwiched between the upper and lower outer wall panels 1, 1, the horizontal member 11 plays a role of closing a gap where water W can enter the horizontal joint 3 at the rear portion of the horizontal joint 3. This further enhances the sealing performance.
[0019]
The horizontal joint backer 31 serves not only as a backer for supporting the irregular sealing material 32 but also as a water stop material itself. Therefore, even when the indeterminate sealing material 32 is cut, it can be waterproofed by the horizontal joint backer 31 that is a secondary water-stopping material.
[0020]
An embodiment of the second invention will be described with reference to FIGS. 4 to 8 and FIGS. The rear gasket 21 in the first invention is constituted by a rear upper gasket 21a and a rear lower gasket 21b in the second invention. Among these, the rear upper gasket 21 a is provided along the substantially middle part in the depth direction of the vertical joint 2, and the lower part thereof is arranged to enter the concave part 13 of the horizontal member 11. In addition, the rear lower gasket 21b is disposed immediately below the rear upper gasket 21a with its upper end in contact with the rear surface of the lower end of the upper gasket 21a. When the rear gasket 21 is divided into upper and lower parts 21a and 21b, the mounting workability is improved, but the sealing performance is slightly lowered.
[0021]
The embodiment of the third invention shown in FIG. 15 is one in which the horizontal member 11 and the vertical member 12 are configured as separate parts. Good. Alternatively, the vertical member 12 as a separate part may be attached to the outer wall panel 1 with a double-sided tape or the like, and the vertical member 12 and the horizontal member 11 may be combined simultaneously with the outer wall panel 1 being assembled. At this time, it is preferable that the vertical member 12 is slightly extracted from the lower end of the outer wall panel 1 so that the horizontal member 11 wraps around the vertical member 12.
[0022]
In the embodiment of the fourth invention shown in FIG. 16, the front gasket 23 in the first to third inventions is divided at the intersection 4 into a front upper gasket 23a and a front lower gasket 23b. If the front gasket 23 is divided into upper and lower parts 23a and 23b, the mounting workability is improved, but the sealing performance and appearance are slightly deteriorated.
[0023]
【The invention's effect】
In the outer wall joint seal structure according to the present invention, a cross seal portion 10 is provided at a cross portion 4 where the vertical joint 2 and the horizontal joint 3 cross each other, and a recess 13 formed in the horizontal member 11, a front gasket 23, and a rear gasket 21. Since the continuous drainage channel 5 is formed with the drainage space 24 formed between the two, the intruded water W can be smoothly flowed down through the drainage channel 5 and discharged outside. Thereby, the outer wall panel 1 is not damaged by the water W.
[0024]
In addition, this outer wall joint seal structure allows the vertical seal portion 20 to have a double seal function (particularly, the cross seal portion has a triple seal function), and the horizontal seal portion 30 has a double seal function. Since the sealing function is provided, high sealing performance can be exhibited.
[Brief description of the drawings]
FIG. 1 is a front perspective view showing a conventional example.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a sectional view taken along line BB in FIG.
FIG. 4 is a front view showing an embodiment of the present invention.
FIG. 5 is a cross-sectional view taken along the line CC in FIG. 4 of the present invention.
6 is a cross-sectional view taken along the line DD in FIG. 4 of the present invention.
FIG. 7 is an exploded perspective view showing a part of the embodiment of the first and second inventions.
FIG. 8 is a perspective view showing a part of the embodiments of the first and second inventions.
FIG. 9 is an exploded perspective view showing an embodiment of the first invention.
10 is a cross-sectional view taken along line EE in FIG. 4 of the first invention.
FIG. 11 is a cross-sectional view taken along line FF in FIG. 4 of the first invention.
FIG. 12 is an exploded perspective view showing an embodiment of the second invention.
FIG. 13 is a cross-sectional view taken along line EE in FIG. 4 of the second invention.
FIG. 14 is a cross-sectional view taken along line FF in FIG. 4 of the second invention.
FIG. 15 is a partial exploded perspective view showing an embodiment of the third invention.
16 is a cross-sectional view taken along line EE in FIG. 4 of the fourth invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer wall panel 1a Outer wall part 1b Main-body part 2 Vertical joint 3 Horizontal joint 4 Crossing part 5 Drainage channel 6 Water stop sheet 7 Corner waterproofing tape 10 Crossing seal part 11 Horizontal material 12 Vertical material 13 Recessed part 20 Vertical seal part 21 Rear gasket 21a Rear upper gasket 21b Rear lower gasket 23 Front gasket 23a Front upper gasket 23b Front lower gasket 24 Drain space 30 Horizontal seal portion 31 Horizontal joint backer 32 Atypical sealing material 40 Fixed gasket 40a Lip 41 Atypical sealing material 42 Backer W Water

Claims

Cross seal part (10), vertical seal part (20) to seal the vertical joint (2) and the horizontal joint (3) formed by the four outer wall panels (1, ..., 1) adjacent vertically and horizontally And an outer wall joint seal structure having a horizontal seal portion (30), wherein the cross seal portion is provided at an intersection portion (4) where the vertical joint and the horizontal joint intersect, and is disposed between the upper and lower outer wall panels. A vertical member (12) disposed between the left and right outer wall panels is erected from the member (11), and a recess (13) having a width substantially equal to the vertical joint is formed in the front portion of the horizontal member, and the vertical seal Between the rear gasket (21) having the portion along the substantially middle portion in the depth direction of the vertical joint and entering the concave portion of the horizontal member, and the drainage space between the rear gasket along the front portion of the vertical joint ( 24) and a front gasket (23) provided by opening the side seal At a substantially intermediate portion in the depth direction of the horizontal joint, and a horizontal joint backer (31) provided with its tip elastically contacting both sides of the horizontal member, and an indeterminate sealing material (32 ), And a drainage channel (5) is formed by the drainage space (24) and the recess (13).

Cross seal part (10), vertical seal part (20) to seal the vertical joint (2) and the horizontal joint (3) formed by the four outer wall panels (1, ..., 1) adjacent vertically and horizontally And an outer wall joint seal structure having a horizontal seal portion (30), wherein the cross seal portion is provided at an intersection portion (4) where the vertical joint and the horizontal joint intersect, and is disposed between the upper and lower outer wall panels. A vertical member (12) disposed between the left and right outer wall panels is erected from the member (11), and a recess (13) having a width substantially equal to the vertical joint is formed in the front portion of the horizontal member, and the vertical seal And a rear upper gasket (21a) in which the lower portion is inserted into the concave portion of the horizontal member and an upper end portion directly below the rear upper gasket (21a). Is provided in contact with the rear surface of the lower end of the rear upper gasket. A side gasket (21b) and a front gasket (23) provided with a drainage space (24) between the rear upper gasket and the rear lower gasket along the front of the vertical joint, The horizontal joint backer (31) provided with the seal part in the middle of the horizontal joint in the depth direction and its tip elastically contacting both sides of the horizontal member, and the indeterminate seal provided at the front of the horizontal joint backer An outer wall joint seal structure comprising a material (32) and forming a drainage channel (5) with the drainage space (24) and the recess (13).

The outer wall joint seal structure according to claim 1 or 2, wherein the horizontal member (11) and the vertical member (12) are separate parts.

The outer wall joint seal structure according to claim 1, 2 or 3, wherein the front gasket (23a, 23b) is divided vertically at the intersection (4).