JP4052449B2

JP4052449B2 - Joint structure

Info

Publication number: JP4052449B2
Application number: JP2002317599A
Authority: JP
Inventors: 益雄福島
Original assignee: 北星ゴム工業株式会社
Priority date: 2002-10-31
Filing date: 2002-10-31
Publication date: 2008-02-27
Anticipated expiration: 2022-10-31
Also published as: JP2004150163A

Description

【０００１】
【発明の属する技術分野】
本願発明は目地構造に関し、主にＤＰＧやＭＰＧ等のガラススクリーンにおいて、隣接する板ガラスどうしのジョイント部（以下「目地部」という）の水密性と気密性を確保するために施工されるものである。
【０００２】
【従来の技術】
ガラススクリーン等における隣接するガラス間の目地部の水密性と気密性を確保する方法として、目地部に不定形のシーリング材を充填する方法が一般に知られている。
【０００３】
また、施工方法としては、目地部の周囲に特に障害となるようなものがなく、目地部の屋外側と屋内側のいずれの側からでも施工可能な場合においては、一般に目地部の一方側にシーリング材の受けとなるシーリングバックアップ材をあらかじめ取り付けておき、反対側から目地部にシーリング材を充填する方法がとられている。
【０００４】
【発明が解決しようとする課題】
しかし、例えば図７に図示するように、互いに隣り合って設置された板ガラス１と板ガラス２との間に形成された目地溝３の屋内側に、柱や梁などの障害物４があって充分な作業スペースを確保できないような場合には、シーリング材５の充填がきわめて困難か、全くできない場合があった。
【０００５】
また、目地溝３にシーリング５を充填できたとしても、永年の経過とともにシーリング材５が劣化して気密および止水効果が著しく低下してしまう等の課題があった。さらに、シーリング材は不定形材であることから特殊な治具を用いて充填作業を行う必要があるだけでなく、均等な厚さに充填することがきわめて困難であった。
【０００６】
なお、当出願人はこれまで、この種の目地構造として定形シーリング材を用いて形成された乾式の目地構造を開発したが（特願２００１−２６８７２５号）、特に目地部材の形状が複雑で成形が面倒なだけでなく、水密性と気密性の点で必ずしも充分なものとは言えないものであった。
【０００７】
本願発明は、以上の課題を解決するためになされたもので、当出願人が開発した先の目地構造を改良したもので、特に目地部の屋外側からでもきわめて簡単にかつ確実に施工でき、しかも水密性と気密性を保持できるようにした目地構造を提供することを目的とする。
【０００８】
【課題を解決するための手段】
請求項１記載の目地構造は、目地溝の屋内側端部に一組の一次目地部材を対向して取り付けることにより前記目地溝と連続し、対向面が凹曲面状に形成された嵌合溝を形成し、前記目地溝および前記嵌合溝に前記目地溝に挿入された基部と該基部の屋内側に突設され、前記嵌合溝に嵌合された嵌合部とからなる二次目地部材を取り付け、かつその屋外側にシーリング材を取り付けてなることを特徴とするものである。
【０００９】
請求項２記載の目地構造は、目地溝の屋内側端部に一組の一次目地部材を対向して取り付けることにより前記目地溝と連続する嵌合溝を形成し、前記目地溝および前記嵌合溝に前記目地溝に挿入された基部と該基部の両側に突設され、前記嵌合溝に嵌合された複数の舌片部とからなる二次目地部材を取り付け、かつその屋外側にシール材を充填してなることを特徴とするものである。
【００１０】
請求項１および２記載の発明は、いずれも施工後の乾燥を必要としない、いわゆる「ドライ目地」の構造に関するものであり、特に一組の一次目地部材間に形成された嵌合部に二次目地部材の嵌合部が嵌合されていることで、二次目地部材を目地溝内に確実に固定することができる。
【００１１】
また、二次目地部材の嵌合部が嵌合溝の対向面に、基部が目地溝の対向面にそれぞれ強く密着し、さらに二次目地部材の屋外側にシーリング材が取り付けられていることにより、目地溝が三重にシールされているため、目地部の止水性と気密性を確実に保持することができるものである。
【００１２】
また、地震などで目地部に動きが生じても一次目地部材と二次目地部材がそれに自由に追随変形することで、目地部材が破断したり剥離したりする等のおそれは全くなく、目地部の水密性と気密性を維持することができるものである。
【００１３】
さらに、一次目地部材および二次目地部材を樹脂またはゴム性弾性材で形成することで、施工に際しても多少の寸法誤差、目地部材のしわやひずみ等を簡単に吸収することができ、目地部材を目地溝に簡単に取り付けることができるものである。なお、ここでシーリング材としては、原則としてパテ、コーキング材などの不定形弾性型が用いられているが、ガスケット等の定形型が用いられていてもよい。
【００１４】
請求項３記載の目地構造は、請求項１または２記載の目地構造において、二次目地部材の基部および／または嵌合部が中空に形成されてなることを特徴とするものである。二次目地部材の基部および／または嵌合部が中空に形成されていることで、基部および嵌合部の弾発力（復元力）が高められるため、基部と嵌合部を目地溝と嵌合溝内にそれぞれ確実に密着させることができる。
【００１５】
また、万一雨水が屋内側に浸入したとしても、浸入した雨水は中空部で下方に排水され、これより屋内側に浸入することはないので、止水処理を確実に行うことができる。この場合、目地部の下端部に中空部内を流れ落ちた雨水を受けて屋外に排水するための水切り部材を取り付けておくのが望ましい。
【００１６】
請求項４記載の目地構造は、請求項１〜３のいずれかに記載の目地構造において、二次目地部材の基部および／または嵌合部の内周面は凹凸面状に形成されてなることを特徴とするものであり、二次目地部材の基部および／または嵌合部の内周面がこのように形成されていることで、二次目地部材の基部および嵌合部は共に変形しやすく、しかも弾力性（復元力）が増すため、二次目地部材を目地溝内に容易に取り付けることができるとともに、二次目地部材を確実に固定することができる。なお、この場合の凹凸面状としては、例えば基部および嵌合部の上下方向に連続する凸状部と凹状部をそれぞれ基部および嵌合部の周方向に交互に形成したものでよい。
【００１７】
請求項５記載の目地構造は、請求項１〜４のいずれかに記載の目地構造において、二次目地部材の基部は硬質樹脂性または硬質ゴム性の弾性材から、嵌合部は軟質樹脂性または軟質ゴム性の弾性材からそれぞれ形成されてなることを特徴とするものである。
【００１８】
また、嵌合溝の対向面が凹曲面状に形成されてなることで、嵌合部が嵌合溝内に確実に嵌合することができるため、二次目地部材を確実に固定することができる。
【００１９】
【発明の実施の形態】
図１〜図４は、本願発明に係る目地構造の一例を示し、図において板ガラス１と板ガラス２が互いに隣り合って設置され、該板ガラス１と板ガラス２との間に所定幅の目地溝３が板ガラス１および板ガラス２の上下方向に連続して形成されている。
【００２０】
また、目地溝３の屋内側の開口端部、すなわち板ガラス１の屋内側の端部、板ガラス２の屋内側の端部にそれぞれ一次目地部材６，６が取り付けられ、該一次目地部材６，６間に目地溝３と連続する嵌合溝７が板ガラス１および板ガラス２の上下方向に連続して形成されている。
【００２１】
一次目地部材６，６は硬質ゴム等の硬質性弾性材から断面略台角形状に形成され、それぞれその底面部６ａを板ガラス１と板ガラス２の屋内側面に接着材で接着することにより板ガラス１の屋内側の端部、板ガラス２の屋内側の端部にそれぞれ固着されている。
【００２２】
この場合、例えば図４（ａ），（ｂ）に図示するように、底面部６ａの表面が接着材を充分に塗着できるように凹凸状に形成されていることで、一次目地部材６，６は板ガラス１と板ガラス２の屋内側面に確実に固着されている。
【００２３】
また、こうして取り付けられた一組の一次目地部材６，６の対向面間に上述した嵌合溝７が形成され、その屋内側端部、すなわち一次目地部材６，６の屋内側端部に、互いに対向するリブ６ｂ，６ｂが目地溝３の上下方向に連続してそれぞれ突設されている。
【００２４】
なお、この場合の嵌合溝７は、例えば図１（ｂ）に図示するように、対向面が平面状、または図２（ｂ）に図示するように、凹曲面状をなす溝状に形成されていてもよい。
【００２５】
こうして形成された目地溝３と嵌合溝７内に二次目地部材８が双方の溝に跨がって挿入され、さらにその屋外側にシーリング材９が充填されている。
【００２６】
二次目地部材８は、目地溝３の屋内側寄りに挿入された基部８ａとその屋内側に突設され、嵌合溝７に嵌合された嵌合部８ｂとから目地溝３および嵌合溝７の上下方向に連続して形成されている。
【００２７】
基部８ａは目地溝３の溝幅よりやや小径の断面略矩形の中空断面形に形成され、その両側に目地溝３の対向面、すなわち板ガラス１，２の端面にそれぞれ変形して強く密着する舌片部８ｃ，８ｃが基部８ａの上下方向に連続して複数列突設されている。また、基部８ａは舌片部８ｃ，８ｃとともに硬質合成樹脂材から一体的に形成されている。
【００２８】
一方、嵌合部８ｂは嵌合溝７の溝幅よりやや太径の断面略矩形または円形の中空断面形に形成され、その内周は凹凸面状に形成されている。また、嵌合部８ｂは基部８ａより軟質の軟質性弾性材、例えばスポンジ等から形成されている。この場合、嵌合部８ｂは軟質弾性材から形成され、かつ内周が凹凸面状に形成されていることで、きわめて変形しやすく、しかも弾発力に非常に富んでいるため、嵌合溝７の断面形状が矩形、円形のいずれの場合においても、嵌合溝７内に確実に密着させることができるため、二次目地部材８を目地部に強固に固定することができる。
【００２９】
シーリング材９は板ガラス１，２の対向面にのみそれぞれ接着され、二次目地部材８には、二次目地部材８とシーリング材９との間にボンドブレーカー１０が介在されていることで接着されていない。シーリング材９がこのような状態で目地溝３に充填されていることで、たとえ目地部が地震などで動いたとしても、この動きに二次目地部材８が追従して変形することがないので、目地部が破断して雨水が浸入してしまう等の問題は発生しない。
【００３０】
図５と図６は本願発明の他の例を示し、図において、特に一次目地部材６，６の対向面にテーパを付けることにより嵌合溝７が屋内方向に徐々に小幅になるように形成されている。
【００３１】
また、二次目地部材８の基部８ａはフランジ部８ｄとウェブ部８ｅとから断面略Ｔ形状に形成され、フランジ部８ｄの両側に複数の舌片部８ｃが嵌合部として複数列にそれぞれ突設されている。
【００３２】
そして、フランジ部８ｄの両端部が変形して目地溝３の対向面に密着し、各舌片部８ｃの先端部が嵌合溝７の対向面にそれぞれ変形して密着し、さらに二次目地部材８の屋外側にシーリング材９が充填されていることで、目地溝３の止水性と気密性が三重に保持されている。
【００３３】
なお、この例においても二次目地部材８とシーリング材９との間にボンドブレーカー１０が介在されて二次目地部材８とシーリング材９が接着されない状態にあるので、目地部が地震などで動いたとしても、この動きに二次目地部材８が追従して変形することはないので、目地部が破断して雨水が浸入してしまう等の問題は発生しない。
【００３４】
【発明の効果】
本願発明は以上説明したとおりであり、特に二次目地部材の嵌合部が嵌合溝の対向面に、基部が目地溝の対向面にそれぞれ強く密着し、さらに二次目地部材の屋外側にシーリング材が取り付けられていることにより、目地溝が三重にシールされているため、目地部の止水性と気密性を確実に保持することができる。
【００３５】
また、屋内側端部に一組の一次目地部材を対向して取り付けることにより形成された嵌合溝に二次目地部材の嵌合部を嵌合させて、二次目地部材が目地溝内に固定されているため、例えば比較的薄い板ガラス（１０ｍｍ程度）同士のジョイント部のように、目地溝が比較的浅いためにシーリングバックアップ材を入れる余裕がない場合でも、二次目地部材を目地溝内に確実に固定することができる。
【００３６】
また、地震などで目地部に動きが生じても二次目地部材がそれに自由に追随変形することできるため、目地部材が破断したり剥離したりする等のおそれは全くなく、目地部の水密性と気密性を維持することができるものである。
【００３７】
さらに、一次目地部材および二次目地部材を樹脂またはゴム性弾性材で形成することで、施工に際しても多少の寸法誤差、目地部材のしわやひずみ等を簡単に吸収することができるだけでなく、目地部材を目地溝に簡単に取り付けることができる。
【００３８】
また、二次目地部材の基部と嵌合部が中空に形成されているので、二次目地部材の弾発力（復元力）が非常に高く、このため基部と嵌合部を目地溝と嵌合溝内にそれぞれ確実に密着させることができる。
【００３９】
また、万一雨水が屋内側に浸入したとしても、浸入した雨水は中空部で下方に排水され、これより屋内側に浸入することはないので、止水処理も確実に行うことができる。
【図面の簡単な説明】
【図１】本願発明の目地構造の一例を示し、（ａ）はその施工後の横断面図、（ｂ）はその施工前の横断面図である。
【図２】本願発明の目地構造の他の例を示し、（ａ）はその施工後の横断面図、（ｂ）はその施工前の横断面図である。
【図３】（ａ），（ｂ）は、二次目地部材の一例を示す横断面図である。
【図４】（ａ），（ｂ）は、一次目地部材の他の例を示す横断面図である。
【図５】本願発明の目地構造の他の例を示し、（ａ）はその施工後の横断面図、（ｂ）はその施工前の横断面図である。
【図６】（ａ）は二次目地部材の一例を示す横断面図、（ｂ）は一次目地部材の一例を示す横断面図である。
【図７】従来の目地構造の一例を示す斜視図である。
【符号の説明】
１板ガラス
２板ガラス
３目地溝
４柱や梁などの障害物
５シーリング材
６一次目地部材
６ａ底面部
６ｂリブ
７嵌合溝
８二次目地部材
８ａ基部
８ｂ嵌合部
８ｃ舌片部
８ｄフランジ部
８ｅウェブ部
９シーリング材
１０ボンドブレーカー[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint structure, and is mainly constructed in a glass screen such as DPG or MPG in order to ensure water tightness and air tightness of joint portions (hereinafter referred to as “joint portions”) between adjacent plate glasses. .
[0002]
[Prior art]
As a method for ensuring the watertightness and airtightness of the joint between adjacent glasses in a glass screen or the like, a method of filling the joint with an irregular sealing material is generally known.
[0003]
In addition, as a construction method, there is no particular obstacle around the joint part, and when it can be constructed from either the outdoor side or the indoor side of the joint part, it is generally on one side of the joint part. A method has been adopted in which a sealing backup material for receiving a sealing material is attached in advance and the sealing material is filled into the joint from the opposite side.
[0004]
[Problems to be solved by the invention]
However, as shown in FIG. 7, for example, there are obstacles 4 such as columns and beams on the indoor side of the joint groove 3 formed between the glass plates 1 and 2 installed adjacent to each other. When it is difficult to secure a sufficient work space, filling of the sealing material 5 may be extremely difficult or impossible at all.
[0005]
Further, even if the joint groove 3 can be filled with the sealing 5, there is a problem that the sealing material 5 is deteriorated over the years and the airtightness and the water stop effect are remarkably lowered. Furthermore, since the sealing material is an indeterminate shape material, it is not only necessary to perform a filling operation using a special jig, but also it is extremely difficult to fill the uniform thickness.
[0006]
In the meantime, the applicant has developed a dry joint structure formed using a fixed sealing material as this kind of joint structure (Japanese Patent Application No. 2001-268725), but the shape of the joint member is particularly complicated and molded. In addition to being troublesome, it was not necessarily sufficient in terms of watertightness and airtightness.
[0007]
The present invention was made in order to solve the above-mentioned problems, and is an improvement of the joint structure developed by the present applicant, which can be applied very easily and reliably even from the outdoor side of the joint part, In addition, an object is to provide a joint structure that can maintain water tightness and air tightness.
[0008]
[Means for Solving the Problems]
The joint structure according to claim 1 is a fitting groove in which a pair of primary joint members are attached to the indoor side end portion of the joint groove so as to be continuous with the joint groove, and the opposing surface is formed in a concave curved surface shape. And a secondary joint formed by a base portion inserted into the joint groove and the fitting groove, and a fitting portion projecting on the indoor side of the base portion and fitted into the fitting groove. A member is attached, and a sealing material is attached to the outdoor side thereof.
[0009]
The joint structure according to claim 2, wherein a fitting groove continuous with the joint groove is formed by attaching a pair of primary joint members to an indoor side end portion of the joint groove, and the joint groove and the fitting are formed. A secondary joint member comprising a base portion inserted into the joint groove and a plurality of tongue pieces fitted into the fitting groove is attached to the groove, and a seal is provided on the outdoor side thereof. It is characterized by being filled with a material.
[0010]
The inventions of claims 1 and 2 both relate to the structure of so-called “dry joints” that do not require drying after construction, and in particular, two fitting parts formed between a pair of primary joint members. By fitting the fitting portion of the secondary joint member, the secondary joint member can be reliably fixed in the joint groove.
[0011]
In addition, the fitting portion of the secondary joint member is in close contact with the opposing surface of the fitting groove, the base portion is in close contact with the opposing surface of the joint groove, and a sealing material is attached to the outdoor side of the secondary joint member. Since the joint groove is sealed in triplicate, the water-stopping property and airtightness of the joint portion can be reliably maintained.
[0012]
In addition, even if the joint portion moves due to an earthquake or the like, there is no risk that the joint member will break or peel off because the primary joint member and the secondary joint member freely follow and deform. It is possible to maintain the water tightness and air tightness.
[0013]
Furthermore, by forming the primary joint member and the secondary joint member with a resin or rubber elastic material, it is possible to easily absorb some dimensional errors, wrinkles and distortions of the joint member, and the like. It can be easily attached to the joint groove. Here, as a sealing material, an indefinite elastic type such as putty or caulking material is used in principle, but a fixed type such as a gasket may be used.
[0014]
The joint structure according to claim 3 is characterized in that, in the joint structure according to claim 1 or 2, the base part and / or the fitting part of the secondary joint member are formed hollow. Since the base part and / or the fitting part of the secondary joint member are formed hollow, the resilience (restoring force) of the base part and the fitting part is increased, so that the base part and the fitting part are fitted to the joint groove. It is possible to ensure close contact with the groove.
[0015]
Further, even if rainwater enters the indoor side, the rainwater that has entered infiltrates downward in the hollow portion and does not enter the indoor side from this, so the water stop treatment can be performed reliably. In this case, it is desirable to attach a draining member for receiving rainwater that has flowed down in the hollow portion and draining it outdoors to the lower end of the joint.
[0016]
The joint structure according to claim 4 is the joint structure according to any one of claims 1 to 3, wherein the base part of the secondary joint member and / or the inner peripheral surface of the fitting part is formed in an uneven surface shape. The base part of the secondary joint member and / or the inner peripheral surface of the fitting part are formed in this way, so that both the base part and the fitting part of the secondary joint member are easily deformed. And since elasticity (restoring force) increases, while a secondary joint member can be easily attached in a joint groove, a secondary joint member can be fixed reliably. In this case, as the uneven surface shape, for example, convex portions and concave portions continuous in the vertical direction of the base portion and the fitting portion may be alternately formed in the circumferential direction of the base portion and the fitting portion, respectively.
[0017]
The joint structure according to claim 5 is the joint structure according to any one of claims 1 to 4, wherein the base of the secondary joint member is made of a hard resinous or hard rubber elastic material, and the fitting part is made of a soft resin. Or it is formed from a soft rubber-like elastic material, respectively.
[0018]
In addition, since the facing surface of the fitting groove is formed in a concave curved surface, the fitting portion can be reliably fitted into the fitting groove, so that the secondary joint member can be securely fixed. it can.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an example of a joint structure according to the present invention. In the figure, a plate glass 1 and a plate glass 2 are installed next to each other, and a joint groove 3 having a predetermined width is provided between the plate glass 1 and the plate glass 2. The plate glass 1 and the plate glass 2 are formed continuously in the vertical direction.
[0020]
Also, primary joint members 6 and 6 are respectively attached to the indoor side opening end of the joint groove 3, that is, the indoor side end of the plate glass 1 and the indoor side end of the plate glass 2. A fitting groove 7 that is continuous with the joint groove 3 is formed between the plate glass 1 and the plate glass 2 in the vertical direction.
[0021]
The primary joint members 6 and 6 are formed of a hard elastic material such as hard rubber and have a substantially trapezoidal cross section, and the bottom surface portions 6a thereof are adhered to the indoor side surfaces of the plate glass 1 and the plate glass 2 with an adhesive material, respectively. It is fixed to the indoor side end and the indoor side end of the glass sheet 2 respectively.
[0022]
In this case, for example, as illustrated in FIGS. 4A and 4B, the primary joint member 6, the surface of the bottom surface portion 6 a is formed in a concavo-convex shape so that the adhesive can be sufficiently applied. 6 is firmly fixed to the indoor side surfaces of the plate glass 1 and the plate glass 2.
[0023]
Further, the above-described fitting groove 7 is formed between the opposing surfaces of the set of primary joint members 6 and 6 thus attached, and the indoor side end portion thereof, that is, the indoor side end portion of the primary joint members 6 and 6, The ribs 6b and 6b facing each other are continuously provided in the up and down direction of the joint groove 3 respectively.
[0024]
In addition, the fitting groove 7 in this case is formed in a groove shape in which the opposing surface is flat as shown in FIG. 1B or a concave curved surface as shown in FIG. 2B, for example. May be.
[0025]
The secondary joint member 8 is inserted into both the joint groove 3 and the fitting groove 7 formed in this manner, and the sealing material 9 is filled on the outdoor side.
[0026]
The secondary joint member 8 is formed from the base portion 8a inserted closer to the indoor side of the joint groove 3 and the fitting portion 8b projecting from the indoor side and fitted into the fitting groove 7 to fit the joint groove 3 and It is formed continuously in the vertical direction of the groove 7.
[0027]
The base 8a is formed in a hollow cross-sectional shape having a substantially rectangular cross-section slightly smaller than the groove width of the joint groove 3, and the tongue 8a is deformed and closely adhered to the opposite surfaces of the joint groove 3, that is, the end surfaces of the plate glasses 1 and 2, respectively. The pieces 8c, 8c are provided in a plurality of rows so as to continue in the vertical direction of the base 8a. The base 8a is integrally formed of a hard synthetic resin material together with the tongue pieces 8c and 8c.
[0028]
On the other hand, the fitting portion 8b is formed in a hollow section having a substantially rectangular or circular cross section having a slightly larger diameter than the groove width of the fitting groove 7, and the inner periphery thereof is formed in an uneven surface shape. The fitting portion 8b is formed of a soft elastic material, such as sponge, which is softer than the base portion 8a. In this case, since the fitting portion 8b is formed of a soft elastic material and the inner periphery is formed in an uneven surface shape, the fitting portion 8b is very easily deformed and has a very high elasticity. 7 can be reliably brought into close contact with the fitting groove 7 regardless of whether the cross-sectional shape is rectangular or circular, the secondary joint member 8 can be firmly fixed to the joint part.
[0029]
The sealing material 9 is bonded only to the opposing surfaces of the glass plates 1 and 2, and the secondary joint member 8 is bonded by a bond breaker 10 interposed between the secondary joint member 8 and the sealing material 9. Not. Since the sealing material 9 is filled in the joint groove 3 in such a state, even if the joint portion moves due to an earthquake or the like, the secondary joint member 8 does not deform following the movement. In addition, problems such as breakage of joints and intrusion of rainwater do not occur.
[0030]
5 and 6 show another example of the present invention. In the figure, the fitting groove 7 is formed so as to gradually become narrower in the indoor direction by tapering the opposing surfaces of the primary joint members 6 and 6 in particular. Has been.
[0031]
The base portion 8a of the secondary joint member 8 is formed in a substantially T-shaped cross section from the flange portion 8d and the web portion 8e, and a plurality of tongue piece portions 8c project into a plurality of rows as fitting portions on both sides of the flange portion 8d. It is installed.
[0032]
Then, both end portions of the flange portion 8d are deformed to be in close contact with the facing surface of the joint groove 3, and the tip portions of the respective tongue piece portions 8c are respectively deformed and closely contacted with the facing surface of the fitting groove 7, and further the secondary joint. Since the sealing material 9 is filled on the outdoor side of the member 8, the waterproofness and airtightness of the joint groove 3 are maintained in triplicate.
[0033]
Also in this example, since the bond breaker 10 is interposed between the secondary joint member 8 and the sealing material 9 and the secondary joint member 8 and the sealing material 9 are not bonded, the joint portion moves due to an earthquake or the like. Even so, since the secondary joint member 8 does not follow this movement and deform, there is no problem that the joint portion breaks and rainwater enters.
[0034]
【The invention's effect】
The present invention is as described above, and in particular, the fitting portion of the secondary joint member is in close contact with the facing surface of the fitting groove, the base portion is in close contact with the facing surface of the joint groove, and further on the outdoor side of the secondary joint member. By attaching the sealing material, the joint groove is sealed in triplicate, so that the waterproofness and airtightness of the joint part can be reliably maintained.
[0035]
In addition, the secondary joint member is fitted into the joint groove by fitting the fitting portion of the secondary joint member into the fitting groove formed by attaching a set of primary joint members to the indoor side end. Because it is fixed, for example, a joint between relatively thin plate glasses (about 10 mm), even if there is no room for a sealing backup material because the joint groove is relatively shallow, place the secondary joint member in the joint groove. Can be securely fixed.
[0036]
In addition, even if the joint part moves due to an earthquake or the like, the secondary joint member can freely follow and deform, so there is no risk of the joint member breaking or peeling, and the water tightness of the joint part And the airtightness can be maintained.
[0037]
Furthermore, by forming the primary joint member and the secondary joint member with a resin or rubber elastic material, it is possible not only to easily absorb some dimensional errors, wrinkles and distortion of the joint member, but also the joint. The member can be easily attached to the joint groove.
[0038]
In addition, since the base part and the fitting part of the secondary joint member are formed hollow, the resilience (restoring force) of the secondary joint member is very high. Therefore, the base part and the fitting part are fitted with the joint groove. It is possible to ensure close contact with the groove.
[0039]
Also, even if rainwater enters the indoor side, the rainwater that has entered infiltrates downward in the hollow portion and does not enter the indoor side from this, so the water stop treatment can be performed reliably.
[Brief description of the drawings]
1A and 1B show an example of a joint structure of the present invention, in which FIG. 1A is a cross-sectional view after the construction, and FIG. 1B is a cross-sectional view before the construction.
2A and 2B show another example of the joint structure of the present invention, in which FIG. 2A is a cross-sectional view after the construction, and FIG. 2B is a cross-sectional view before the construction.
FIGS. 3A and 3B are cross-sectional views showing an example of a secondary joint member. FIGS.
FIGS. 4A and 4B are cross-sectional views showing other examples of the primary joint member. FIGS.
5A and 5B show another example of the joint structure of the present invention, in which FIG. 5A is a cross-sectional view after the construction, and FIG. 5B is a cross-sectional view before the construction.
6A is a cross-sectional view showing an example of a secondary joint member, and FIG. 6B is a cross-sectional view showing an example of a primary joint member.
FIG. 7 is a perspective view showing an example of a conventional joint structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Plate glass 2 Plate glass 3 Joint groove | channel 4 Obstacles, such as a pillar and a beam 5, Sealing material 6 Primary joint member 6a Bottom face part 6b Rib 7 Fitting groove 8 Secondary joint member 8a Base part 8b Fitting part 8c Tongue piece part 8d Flange part 8e Web part 9 Sealing material 10 Bond breaker

Claims

A pair of primary joint members are attached to the indoor side end of the joint groove so as to be continuous with the joint groove to form a fitting groove having an opposing surface formed into a concave curved surface, and the joint groove and the A secondary joint member comprising a base portion inserted into the joint groove and a fitting portion fitted into the fitting groove is provided on the indoor side of the base portion. A joint structure characterized by attaching a sealing material.

A fitting groove continuous with the joint groove is formed by attaching a pair of primary joint members to the indoor side end of the joint groove so as to be inserted into the joint groove and the fitting groove. A joint that is provided with a secondary joint member that protrudes from both sides of the base portion and is fitted into the fitting groove, and a sealing material is attached to the outdoor side thereof. Construction.

The joint structure according to claim 1 or 2, wherein the base part and / or the fitting part of the secondary joint member are formed to be hollow.

The joint structure according to any one of claims 1 to 3, wherein the base part of the secondary joint member and / or the inner peripheral surface of the fitting part is formed in an uneven surface shape.

The base portion of the secondary joint member is formed from a hard resin or hard rubber elastic material, and the fitting portion is formed from a soft resin or soft rubber elastic material, respectively. The joint structure according to any one of the above.