JP6765114B2

JP6765114B2 - How to repair the sash frame

Info

Publication number: JP6765114B2
Application number: JP2016163103A
Authority: JP
Inventors: 知成饒平名
Original assignee: 株式会社Ｂａｃ
Priority date: 2016-08-23
Filing date: 2016-08-23
Publication date: 2020-10-07
Anticipated expiration: 2036-08-23
Also published as: JP2018031154A

Description

本願発明は、躯体の開口部に固定された窓や扉等のサッシ枠の補修方法に関するものである。 The present invention relates to a method for repairing a sash frame such as a window or a door fixed to an opening of a skeleton.

老朽化した窓や扉等のサッシ枠をリフォームする場合、既設サッシ枠を撤去することなく、該既設サッシ枠の内側に新設サッシ枠を固定する方法が知られているが、さらにこのリフォーム方法は、既設サッシ枠に対する新設サッシ枠の固定の仕方から、以下の二つの工法に大別される。 When remodeling a sash frame such as an aged window or door, a method of fixing a new sash frame inside the existing sash frame without removing the existing sash frame is known. , The method of fixing the new sash frame to the existing sash frame is roughly divided into the following two construction methods.

その一つは、「かぶせ工法」とか「カバー工法」と呼ばれている工法であって、例えば特許文献１に示されるように、既設サッシ枠の内側に新設サッシ枠を嵌装し、これら両者間を連結部材を介して溶接あるいはネジ止め等によって固定する方法である。
他の一つは、例えば、特許文献２に示されるように、既設サッシ枠と新設サッシ枠の間に生じる空間部内に発泡性樹脂を注入して発泡硬化させ、この樹脂硬化層を介して上記既設サッシ枠に上記新設サッシ枠を固定する方法である。 One of them is a construction method called "cover construction method" or "cover construction method". For example, as shown in Patent Document 1, a new sash frame is fitted inside an existing sash frame, and both of them are used. This is a method of fixing the space by welding or screwing via a connecting member.
The other one is, for example, as shown in Patent Document 2, in which a foamable resin is injected into a space formed between an existing sash frame and a new sash frame to be foam-cured, and the above is described through the resin-cured layer. This is a method of fixing the new sash frame to the existing sash frame.

特開２００７−１３８５６０号公報JP-A-2007-138560 特開２０１０−１５６１９３号公報JP-A-2010-156193

ところで、図５には、「かぶせ工法」の一例として、躯体１に設けられた開口部２に当初から取り付けられていた既設サッシ枠３が古くなったため、該既設サッシ枠３の内側に新たに新設サッシ枠４を嵌装し、これら両者を連結具６を介して固定した状態を示している。 By the way, in FIG. 5, as an example of the "covering method", the existing sash frame 3 that was originally attached to the opening 2 provided in the skeleton 1 has become old, so that the existing sash frame 3 is newly installed inside the existing sash frame 3. A state in which a new sash frame 4 is fitted and both of them are fixed via a connector 6 is shown.

この状態においては、上記既設サッシ枠３の外周面３ｂは上記開口部２の内周面２ａに当接しているが、既設サッシ枠３の厚さ方向に伸びる周壁３ａは、該外周面３ｂよりも枠中心側に後退した位置に形成されていることから、該周壁３ａと上記開口部２の内周面２ａとの間には、該開口部２の内周面２ａに沿って延びる空間部２１が生じている。なお、上記既設サッシ枠３は、その下側縁部においては、該既設サッシ枠３の付属品としての枠取付座５を介して上記開口部２の内周面に固定されているので、ここでは上記枠取付座５と上記既設サッシ枠３の間に上記空間部２１が生じている。 In this state, the outer peripheral surface 3b of the existing sash frame 3 is in contact with the inner peripheral surface 2a of the opening 2, but the peripheral wall 3a extending in the thickness direction of the existing sash frame 3 is from the outer peripheral surface 3b. Since it is formed at a position retracted toward the center of the frame, a space extending along the inner peripheral surface 2a of the opening 2 is provided between the peripheral wall 3a and the inner peripheral surface 2a of the opening 2. 21 has occurred. The existing sash frame 3 is fixed to the inner peripheral surface of the opening 2 at the lower edge portion thereof via the frame mounting seat 5 as an accessory of the existing sash frame 3. Then, the space portion 21 is formed between the frame mounting seat 5 and the existing sash frame 3.

また、上記既設サッシ枠３の上記周壁３ａと新設サッシ枠４の周壁４ａの間には空間部２２が生じている。そして、この空間部２２は、該既設サッシ枠３及び新設サッシ枠４の表裏両面上に開口する帯状開口１４，１５を介して外部に臨む状態となっており、これら各帯状開口１４，１５はそれぞれシーリング材７，８によって封止されている。 Further, a space portion 22 is formed between the peripheral wall 3a of the existing sash frame 3 and the peripheral wall 4a of the new sash frame 4. The space portion 22 faces the outside through the band-shaped openings 14 and 15 that open on both the front and back surfaces of the existing sash frame 3 and the new sash frame 4, and each of the band-shaped openings 14 and 15 faces the outside. They are sealed with sealing materials 7 and 8, respectively.

ところが、このような「かぶせ工法」により上記既設サッシ枠３の内側に上記新設サッシ枠４を取り付けてこれら両者を一体化した状態においては、上述のように、上記躯体１の開口部２の内周面２ａと上記既設サッシ枠３の周壁３ａの間には上記空間部２１が生じていることから、例えば、躯体１の老朽化によって該躯体１にひび割れが生じたような場合には、このひび割れを伝って雨水等の水Ｗが上記空間部２１内に浸入してここに溜まることがある。そして、この空間部２１に溜まった水Ｗを放置すれば、例えば、上記既設サッシ枠３を上記躯体１に固定するために上記空間部２１内に配置されている鉄製の連結具（図示省略）が腐食して上記既設サッシ枠３の固定強度が損なわれるとか、鉄錆の混入によって汚れた水Ｗが上記躯体１の表面側に滲み出て、その周囲を汚損することが懸念される。 However, in a state where the new sash frame 4 is attached to the inside of the existing sash frame 3 by such a "covering method" and both of them are integrated, as described above, the inside of the opening 2 of the skeleton 1 Since the space portion 21 is generated between the peripheral surface 2a and the peripheral wall 3a of the existing sash frame 3, for example, when the skeleton 1 is cracked due to aging, this skeleton 1 is cracked. Water W such as rainwater may infiltrate into the space 21 and collect there along the cracks. Then, if the water W accumulated in the space portion 21 is left unattended, for example, an iron connecting tool arranged in the space portion 21 for fixing the existing sash frame 3 to the skeleton 1 (not shown). There is a concern that the existing sash frame 3 may be corroded and the fixing strength of the existing sash frame 3 may be impaired, or that water W contaminated by the mixing of iron rust may seep out to the surface side of the skeleton 1 and contaminate the surrounding area.

また一方、上記既設サッシ枠３の周壁３ａと上記新設サッシ枠４の周壁４ａ間には、上記空間部２２が生じていることから、例えば、長期の使用による老朽化の進行、あるいは施工不良などを原因として、上記シーリング材７，８と上記既設サッシ枠３及び新設サッシ枠４との隙間等から上記空間部２２内に雨水等の水Ｗが浸入し、ここに溜まることがある。この空間部２２に溜まった水Ｗをそのまま放置しておくと、鉄製の上記連結具６が腐食し、上記既設サッシ枠３と新設サッシ枠４間の連結強度が損なわれるとか、鉄錆が混入して褐色になった水Ｗが上記シーリング材７，８と上記既設サッシ枠３及び新設サッシ枠４との隙間から滲み出て躯体１の壁面を汚損することが懸念される。 On the other hand, since the space portion 22 is generated between the peripheral wall 3a of the existing sash frame 3 and the peripheral wall 4a of the new sash frame 4, for example, deterioration due to long-term use or poor construction may occur. As a result, water W such as rainwater may infiltrate into the space 22 through a gap between the sealing materials 7 and 8 and the existing sash frame 3 and the newly installed sash frame 4, and may collect there. If the water W accumulated in the space 22 is left as it is, the iron connecting tool 6 is corroded, the connection strength between the existing sash frame 3 and the new sash frame 4 is impaired, or iron rust is mixed. There is a concern that the brown water W may seep out from the gap between the sealing materials 7 and 8 and the existing sash frame 3 and the newly installed sash frame 4 and stain the wall surface of the skeleton 1.

このような既設サッシ枠３及び新設サッシ枠４の老朽化に伴う上記各空間部２１、２２への雨水の進入に起因する問題を、これら既設サッシ枠３及び新設サッシ枠４を取り除いたり、その構造を大きく変えたりすることなく解決するには、上記各空間部２１，２２への雨水浸入を防止し得るようにこれら各サッシ枠３、４を補修することが必要となる。この補修工法として有用な工法の一つとして、上記各空間部２１、２２内に発泡性樹脂を注入して硬化させて該各空間部２１、２２内を樹脂硬化層で満たすことで、各空間部２１、２２内への水の浸入及び水溜りの発生を未然に防止することが考えられる。 The problem caused by the intrusion of rainwater into the above-mentioned space portions 21 and 22 due to the deterioration of the existing sash frame 3 and the new sash frame 4 can be solved by removing the existing sash frame 3 and the new sash frame 4 or removing the problem. In order to solve the problem without significantly changing the structure, it is necessary to repair each of the sash frames 3 and 4 so as to prevent rainwater from entering the spaces 21 and 22. As one of the useful construction methods as this repair method, a foamable resin is injected into each of the above space portions 21 and 22 and cured, and the inside of each of the space portions 21 and 22 is filled with a resin cured layer to fill each space. It is conceivable to prevent the intrusion of water into the parts 21 and 22 and the occurrence of a puddle.

しかしながら、このような発泡性樹脂の注入による補修方法を上記既設サッシ枠３と新設サッシ枠４の補修に適用したとしても、上記問題が全て解消されるわけではない。即ち発泡性樹脂の注入工法を採用したとしても、単に上記各空間部２１、２２内に発泡性樹脂を注入して発泡させるだけでは、発泡性樹脂が上記各空間部２１、２２の全域に十分に行き渡らず、ところどころに空気溜が生じ、この空気溜が発泡性樹脂の硬化後に空洞となって樹脂硬化層内に残存することになる。そして、このような樹脂硬化層内に空洞が残存していると、上記各空間部２１、２２内に浸入した雨水や結露による水が上記空洞を通って室内に浸入するという問題が生じることになる。 However, even if the repair method by injecting the foamable resin is applied to the repair of the existing sash frame 3 and the new sash frame 4, all the above problems are not solved. That is, even if the foaming resin injection method is adopted, simply injecting the foamable resin into the space portions 21 and 22 and foaming the foam resin is sufficient for the entire area of the space portions 21 and 22. Air reservoirs are generated here and there, and after the foamable resin is cured, the air reservoirs become cavities and remain in the cured resin layer. If cavities remain in such a cured resin layer, there arises a problem that rainwater or water due to dew condensation that has infiltrated into each of the space portions 21 and 22 infiltrates into the room through the cavities. Become.

そこで本願発明は、躯体と既設サッシ枠と新設サッシ枠の三者間に生じる各空間部に水溜りが発生するサッシ枠において、該各空間部に発泡性樹脂を注入して該各空間部内を発泡樹脂層で満たすことで、該各空間部内での水溜りの発生が防止できるとともに、躯体と既設サッシ枠の間、及び既設サッシ枠と新設サッシ枠の間の固定状態を補強でき、さらに上記各空間部内を発泡性樹脂で満たす際の空洞の生成を防ぐことができるサッシ枠の補修方法を提案することを目的としてなされたものである。 Therefore, according to the present invention, in a sash frame in which water pools are generated in each space generated between the skeleton, the existing sash frame, and the newly installed sash frame, a foamable resin is injected into each space to fill the space. By filling with the foamed resin layer, it is possible to prevent the generation of water pools in each of the spaces, and to reinforce the fixed state between the skeleton and the existing sash frame and between the existing sash frame and the new sash frame. The purpose of this study is to propose a method for repairing a sash frame that can prevent the formation of cavities when the inside of each space is filled with a foamable resin.

本願の第１の発明では、躯体の開口部に固定された既設サッシ枠の内側に、該既設サッシ枠の周縁に対して密接又は近接した状態で新設サッシ枠を嵌装して固定してなるサッシ枠で、上記既設サッシ枠の内周面と上記新設サッシ枠の外周面の間に形成されてその周方向に延びる空間部に水が溜まったサッシ枠の補修方法であって、
上記新設サッシ枠の側面に、水抜孔と樹脂注入孔を兼ねる小孔を上記空間部の延設方向に所定間隔で複数個形成し、該小孔を通して、上記各空間部内に溜まった水を抜き取り、
しかる後、上記小孔から上記空間部内に発泡性樹脂を注入してこれを発泡硬化させるが、その際、上記複数の小孔のうち、任意の小孔を１番目の樹脂注入孔とし、該１番目の樹脂注入孔から近い側の小孔から順次２番目の樹脂注入孔、３番目の樹脂注入孔、４番目の樹脂注入孔とし、上記１番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記２番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止し、次いで、上記３番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記４番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止するものとし、
係る段階的な発泡性樹脂の注入作業を繰り返すことで上記空間部内に発泡性樹脂を充填しこれを硬化させて樹脂硬化層を形成するとともに、上記樹脂注入孔から溢出して硬化した溢出樹脂部を切除する、ことを特徴としている。 In the first invention of the present application, the new sash frame is fitted and fixed to the inside of the existing sash frame fixed to the opening of the skeleton in a state of being close to or close to the peripheral edge of the existing sash frame. A method of repairing a sash frame that is formed between the inner peripheral surface of the existing sash frame and the outer peripheral surface of the new sash frame and has water accumulated in a space extending in the circumferential direction .
A side surface of the new sash frame, draining small holes serving as a hole and a resin injection hole plurality formed at predetermined intervals in the extending direction of the space portion through said small holes, withdrawn water collected each space portion ,
After that, a foamable resin is injected into the space from the small holes to foam and cure the foam. At that time , any small hole among the plurality of small holes is designated as the first resin injection hole. The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially formed from the small holes on the side closer to the first resin injection hole, and foamability is formed in the space from the first resin injection hole. The resin is injected and foamed and expanded, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole, and then the third resin injection is performed. A foamable resin is injected into the space through the holes to expand the foam, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the fourth resin injection hole. age,
By repeating the stepwise injection work of the foamable resin, the foamable resin is filled in the space and cured to form a resin cured layer, and the overflow resin portion that overflows from the resin injection hole and is cured. It is characterized by excising.

ここで、発泡性樹脂としては、ウレタン系樹脂、エポキシ系樹脂、アクリル系樹脂またはオレフィン系樹脂など、液体の樹脂原料を化学反応により発泡及び硬化させることができる樹脂、あるいは液体の樹脂原料に、窒素、ＬＰＧまたはフロン等の気体を導入して気泡を形成させつつ硬化させることができる樹脂を用いることができる。特に、２種類の液体樹脂原料を混合することで化学反応を生じさせ、発泡及び硬化させる硬質ポリウレタン樹脂は、扱い易く、硬化後の圧縮強度が大きいためより好ましい。 Here, as the foamable resin, a resin capable of foaming and curing a liquid resin raw material by a chemical reaction such as a urethane resin, an epoxy resin, an acrylic resin or an olefin resin, or a liquid resin raw material can be used. A resin that can be cured while forming bubbles by introducing a gas such as nitrogen, LPG or Freon can be used. In particular, a rigid polyurethane resin that causes a chemical reaction by mixing two kinds of liquid resin raw materials to foam and cure is more preferable because it is easy to handle and has a large compressive strength after curing.

本願の第２の発明では、躯体の開口部に固定された既設サッシ枠の内側に、該既設サッシ枠の周縁に対して密接又は近接した状態で新設サッシ枠を嵌装して固定してなるサッシ枠で、上記躯体の開口部の内周面とこれに対向する上記既設サッシ枠の外周面との間に形成されてその周方向に延びる空間部に水が溜まったサッシ枠の補修方法であって、
上記既設サッシ枠の側面に、水抜孔と樹脂注入孔を兼ねる小孔を上記空間部の延設方向に所定間隔で複数個形成し、該小孔を通して、上記各空間部内に溜まった水を抜き取り、
しかる後、上記小孔から上記空間部内に発泡性樹脂を注入してこれを発泡硬化させるが、その際、上記複数の小孔のうち、任意の小孔を１番目の樹脂注入孔とし、該１番目の樹脂注入孔から近い側の小孔から順次２番目の樹脂注入孔、３番目の樹脂注入孔、４番目の樹脂注入孔とし、上記１番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記２番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止し、次いで、上記３番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記４番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止するものとし、
係る段階的な発泡性樹脂の注入作業を繰り返すことで上記空間部内に発泡性樹脂を充填しこれを硬化させて樹脂硬化層を形成するとともに、上記樹脂注入孔から溢出して硬化した溢出樹脂部を切除する、ことを特徴としている。 In the second invention of the present application, the new sash frame is fitted and fixed to the inside of the existing sash frame fixed to the opening of the skeleton in a state of being close to or close to the peripheral edge of the existing sash frame. In the sash frame , a method of repairing a sash frame formed between the inner peripheral surface of the opening of the skeleton and the outer peripheral surface of the existing sash frame facing the sash frame and in which water is collected in a space extending in the circumferential direction. There,
A side surface of the existing sash frame, draining small holes serving as a hole and a resin injection hole plurality formed at predetermined intervals in the extending direction of the space portion through said small holes, withdrawn water collected each space portion ,
After that, a foamable resin is injected into the space from the small holes to foam and cure the foam. At that time , any small hole among the plurality of small holes is designated as the first resin injection hole. The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially formed from the small holes on the side closer to the first resin injection hole, and foamability is formed in the space from the first resin injection hole. The resin is injected and foamed and expanded, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole, and then the third resin injection is performed. A foamable resin is injected into the space through the holes to expand the foam, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the fourth resin injection hole. age,
By repeating the stepwise injection work of the foamable resin, the foamable resin is filled in the space and cured to form a resin cured layer, and the overflow resin portion that overflows from the resin injection hole and is cured. It is characterized by excising.

（ａ）本願の第１の発明
本願の第１の発明に係るサッシ枠の補修方法によれば、躯体の開口部に固定された既設サッシ枠の内側に、該既設サッシ枠の周縁に対して密接又は近接した状態で新設サッシ枠を嵌装して固定してなるサッシ枠で、上記既設サッシ枠の内周面と上記新設サッシ枠の外周面の間に形成されてその周方向に延びる空間部に水が溜まったサッシ枠の補修方法であって、上記新設サッシ枠の側面に、水抜孔と樹脂注入孔を兼ねる小孔を上記空間部の延設方向に所定間隔で複数個形成し、該小孔を通して、上記各空間部内に溜まった水を抜き取り、しかる後、上記小孔から上記空間部内に発泡性樹脂を注入してこれを発泡硬化させるが、その際、上記複数の小孔のうち、任意の小孔を１番目の樹脂注入孔とし、該１番目の樹脂注入孔から近い側の小孔から順次２番目の樹脂注入孔、３番目の樹脂注入孔、４番目の樹脂注入孔とし、上記１番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記２番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止し、次いで、上記３番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記４番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止するものとし、係る段階的な発泡性樹脂の注入作業を繰り返すことで上記空間部内に発泡性樹脂を充填しこれを硬化させて樹脂硬化層を形成するとともに、上記樹脂注入孔から溢出して硬化した溢出樹脂部を切除するようにしているので、以下のような効果が得られる。 (A) First Invention of the present application According to the method of repairing the sash frame according to the first invention of the present application, the inside of the existing sash frame fixed to the opening of the skeleton, with respect to the peripheral edge of the existing sash frame. A sash frame in which a new sash frame is fitted and fixed in close or close to each other. A space formed between the inner peripheral surface of the existing sash frame and the outer peripheral surface of the new sash frame and extending in the circumferential direction. This is a method of repairing a sash frame in which water has accumulated in a portion. On the side surface of the newly installed sash frame, a plurality of small holes that also serve as drain holes and resin injection holes are formed at predetermined intervals in the extending direction of the space portion. through the small hole, pull the water collected each space portion, thereafter, although foaming cure this by injecting a foaming resin into said space portion from the small hole, in which the plurality of small holes Of these, any small hole is used as the first resin injection hole, and the second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially arranged from the small hole on the side closer to the first resin injection hole. Then, a foamable resin is injected into the space from the first resin injection hole to expand the foam, and the foamed resin layer is foamed to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole. The injection of the sex resin is stopped, then the foamable resin is injected into the space from the third resin injection hole to expand the foam, and the foamed resin layer in the process of foaming from the fourth resin injection hole is formed. The injection of the foamable resin is stopped to the extent that a part of the foam overflows, and by repeating the stepwise injection of the foamable resin, the foamable resin is filled in the space and cured to cure the resin cured layer. The overflow resin portion that overflows from the resin injection hole and is hardened is cut off, so that the following effects can be obtained.

（ａ−１）上記空間部内が樹脂硬化層で満たされており、該空間部内に雨水等の水が浸入してここに溜まるということが確実に防止され、例えば、上記既設サッシ枠と新設サッシ枠を連結する連結具が溜まった水によって腐食されるということが無く、既設サッシ枠と新設サッシ枠の固定状態が維持されるとともに、鉄錆が混入した水が外部に滲み出ることもなく躯体表面の汚損が防止されその美観性が維持される。 (A-1) The inside of the space is filled with a hardened resin layer, and water such as rainwater is surely prevented from entering the space and accumulating here. For example, the existing sash frame and the newly installed sash The connecting tool that connects the frames is not corroded by the accumulated water, the fixed state of the existing sash frame and the new sash frame is maintained, and the water mixed with iron rust does not seep out to the outside. The surface is prevented from being soiled and its aesthetic appearance is maintained.

（ａ−２）上記空間部内が樹脂硬化層で満たされていることから、この樹脂硬化層がもつ剛性によって上記既設サッシ枠と新設サッシ枠の間の固定状態が補強され、その分だけサッシ枠全体としての固定性能が高められる。 (A-2) Since the space is filled with the cured resin layer, the rigidity of the cured resin layer reinforces the fixed state between the existing sash frame and the newly installed sash frame, and the sash frame is correspondingly reinforced. The fixing performance as a whole is improved.

（ａ−３）上記空間部内で発泡性樹脂が発泡膨張して該空間部内に順次拡散移動していく場合、該空間部内の空気は次第に発泡性樹脂の膨張方向前方側へ押しやられ、複数個形成された上記樹脂注入孔から外部へ排出されることから、空気が発泡性樹脂内に巻き込まれて空気溜りとなり、これが発泡性樹脂の硬化後に雨漏りや結露の原因ともなる空洞として残存することが無く、例えば、空間部内に浸入した雨水とか結露による水が空洞を通って室内に浸入するようなことが確実に防止される。 (A-3) When the foamable resin expands and expands in the space portion and sequentially diffuses and moves into the space portion, the air in the space portion is gradually pushed forward in the expansion direction of the foamable resin, and a plurality of the foamable resins are pushed forward. Since the air is discharged to the outside from the formed resin injection hole, air is caught in the foamable resin and becomes an air pool, which may remain as a cavity that causes rain leakage or dew condensation after the foamable resin is cured. There is no such thing, for example, rainwater that has entered the space or water due to dew condensation is surely prevented from entering the room through the cavity.

（ａ−４）上記空間部内では、先に注入されて発泡膨張した発泡樹脂層の膨張方向前方側に、後から注入されて発泡膨張した発泡樹脂層が順次積層されることから、該空間部内の空気が発泡樹脂層内に巻き込まれて空気溜りが生成されること、及びこの空気溜りが硬化後に樹脂硬化層内に雨漏りや結露の原因ともなる空洞として残留することが確実に防止され、この結果、空間部内に浸入した雨水とか結露による水が空洞を通って室内に浸入するようなことがより一層確実に防止される。 (A-4) In the space portion, since the foamed resin layer injected later and expanded by foaming is sequentially laminated on the front side in the expansion direction of the foamed resin layer injected first and expanded by foaming, the inside of the space portion. It is surely prevented that the air is caught in the foamed resin layer to form an air pool, and that the air pool remains as a cavity that causes rain leakage or dew condensation in the resin cured layer after curing. As a result, it is possible to more reliably prevent rainwater or water due to dew condensation that has entered the space from entering the room through the cavity.

（ａ−５）発泡性樹脂の注入作業に際しては、現に注入作業に供している樹脂注入孔よりも発泡膨張方向の前方側に位置する他の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出することを目視することで、該他の樹脂注入孔の部分まで発泡性樹脂が十分に充填されていることを確認することができることから、発泡性樹脂の注入量の不足とか発泡性樹脂の発泡不足等に起因する発泡性樹脂の充填不良等が確実に防止されるとともに、発泡性樹脂の注入作業の容易化によって作業コストの低廉化が促進される。 (A-5) When injecting the foamable resin, one of the foamed resin layers in the process of foaming from another resin injection hole located on the front side in the foaming expansion direction with respect to the resin injection hole actually used for the injection work. By visually observing the overflowing portion, it can be confirmed that the foamable resin is sufficiently filled up to the portion of the other resin injection holes, so that the injection amount of the foamable resin is insufficient or the foamability Poor filling of the foamable resin due to insufficient foaming of the resin or the like is surely prevented, and the work cost can be reduced by facilitating the injection work of the foamable resin.

（ａ−６）補修後のサッシ枠では、上記樹脂注入孔から溢出して硬化した溢出樹脂部を切除するようにしていることから、サッシ枠周辺の美観性が維持される。 (A-6) In the repaired sash frame, since the overflowing resin portion that overflows from the resin injection hole and is hardened is cut off, the aesthetic appearance around the sash frame is maintained.

（ａ−７）上記空間部への発泡性樹脂の注入に先立って、上記新設サッシ枠の適所に水抜孔と樹脂注入孔を兼ねる小孔を上記空間部の延設方向に所定間隔で複数個形成し、該小孔を通して、上記各空間部内に溜まった水を抜き取り、しかる後、上記空間部内に発泡性樹脂を注入してこれを発泡硬化させるようにしているので、発泡性樹脂の発泡膨張が水溜りの無い空間部内で行われることになる。 (A-7) Prior to injecting the foamable resin into the space, a plurality of small holes serving as drain holes and resin injection holes are provided at appropriate positions in the newly installed sash frame at predetermined intervals in the extending direction of the space. The foamed resin is formed, and the water accumulated in each of the above spaces is drained through the small holes, and then the foamable resin is injected into the above spaces to be foamed and cured. Will be done in a space where there is no water pool.

ここで、発泡性樹脂には、水に触れると発泡不良とか硬化不良を生じ易くなる性状があることから、仮に、空間部内に水が溜まっているとすれば、この水が溜まった部分では発泡性樹脂の発泡不良とか硬化不良によって空洞が生じ、これが樹脂硬化層中に空洞として残存することになる。また、発泡性樹脂が発泡不良とか硬化不良を生じるに至らなかった場合でも、水は非圧縮性の流体であることから、空間部内に水が溜まっているとすれば、該空間部内に注入された発泡性樹脂が発泡膨張しても、この水溜り部分には充填されず、この部分が、空間部内の樹脂硬化層中に空洞（水が蒸発した後）として残存することになる。 Here, since the foamable resin has a property that foaming failure or curing failure is likely to occur when it comes into contact with water, if water is accumulated in the space, foaming occurs in the portion where the water is accumulated. Cavities are created due to poor foaming or curing of the sex resin, and these cavities remain in the cured resin layer. Further, even if the foamable resin does not cause poor foaming or curing, water is an incompressible fluid, so if water is accumulated in the space, it is injected into the space. Even if the foamable resin foams and expands, the water pool portion is not filled, and this portion remains as a cavity (after the water evaporates) in the resin cured layer in the space portion.

これら樹脂硬化層内に残存する空洞は、既設サッシ枠及び新設サッシ枠の取付強度を損ねるとか、サッシ枠の補修作業の完了後において雨水等がこの空洞内に浸入して躯体の表面を汚損する等の原因となるものであるところ、本発明の補修方法では、上述のように上記空間部内には水溜りが存在しないことから、係る事態の発生が未然に防止され、信頼性の高いサッシ枠を得ることができる。 The cavities remaining in these cured resin layers impair the mounting strength of the existing sash frame and the newly installed sash frame, or rainwater or the like infiltrates into the cavities after the repair work of the sash frame is completed and stains the surface of the skeleton. However, in the repair method of the present invention, since there is no water pool in the space as described above, the occurrence of such a situation can be prevented and a highly reliable sash frame can be prevented. Can be obtained.

（ｂ）本願の第２の発明
本願の第２の発明に係るサッシ枠の補修方法によれば、躯体の開口部に固定された既設サッシ枠の内側に、該既設サッシ枠の周縁に対して密接又は近接した状態で新設サッシ枠を嵌装して固定してなるサッシ枠で、上記躯体の開口部の内周面とこれに対向する上記既設サッシ枠の外周面との間に形成されてその周方向に延びる空間部に水が溜まったサッシ枠の補修方法であって、上記既設サッシ枠の側面に、水抜孔と樹脂注入孔を兼ねる小孔を上記空間部の延設方向に所定間隔で複数個形成し、該小孔を通して、上記各空間部内に溜まった水を抜き取り、しかる後、上記小孔から上記空間部内に発泡性樹脂を注入してこれを発泡硬化させるが、その際、上記複数の小孔のうち、任意の小孔を１番目の樹脂注入孔とし、該１番目の樹脂注入孔から近い側の小孔から順次２番目の樹脂注入孔、３番目の樹脂注入孔、４番目の樹脂注入孔とし、上記１番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記２番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止し、次いで、上記３番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記４番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止するものとし、係る段階的な発泡性樹脂の注入作業を繰り返すことで上記空間部内に発泡性樹脂を充填しこれを硬化させて樹脂硬化層を形成するとともに、上記樹脂注入孔から溢出して硬化した溢出樹脂部を切除するようにしているので、以下のような効果が得られる。 (B) Second Invention of the Present Application According to the method of repairing the sash frame according to the second invention of the present application, the inside of the existing sash frame fixed to the opening of the skeleton, with respect to the peripheral edge of the existing sash frame. A sash frame in which a new sash frame is fitted and fixed in close or close state, and is formed between the inner peripheral surface of the opening of the skeleton and the outer peripheral surface of the existing sash frame facing the inner peripheral surface. This is a method of repairing a sash frame in which water collects in a space extending in the circumferential direction. Small holes that serve as both a drain hole and a resin injection hole are provided on the side surface of the existing sash frame at predetermined intervals in the extending direction of the space. in a plurality form, through the small hole, pull the water collected each space portion, thereafter, although foaming cure this by injecting a foaming resin into said space portion from the small hole, in which, Of the plurality of small holes , any small hole is designated as the first resin injection hole, and the second resin injection hole and the third resin injection hole are sequentially arranged from the small hole on the side closer to the first resin injection hole. As the fourth resin injection hole, a foamable resin is injected into the space from the first resin injection hole to expand the foam, and a part of the foamed resin layer in the process of foaming from the second resin injection hole. The injection of the foamable resin is stopped to the extent that the sash overflows, and then the foamable resin is injected into the space from the third resin injection hole to expand the foam, and the foam is being expanded from the fourth resin injection hole. It is assumed that the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the above is overflowed, and the foamable resin is filled in the space by repeating the stepwise injection of the foamable resin. Since the cured resin layer is formed by curing and the overflowing resin portion that overflows from the resin injection hole and is cured is cut off , the following effects can be obtained.

（ｂ−１）(B-1) 上記空間部内が樹脂硬化層で満たされており、該空間部内に雨水等の水が浸入してここに溜まるということが確実に防止され、例えば、上記既設サッシ枠と新設サッシ枠を連結する連結具が溜まった水によって腐食されるということが無く、既設サッシ枠と新設サッシ枠の固定状態が維持されるとともに、鉄錆が混入した水が外部に滲み出ることもなく躯体表面の汚損が防止されその美観性が維持される。The inside of the space is filled with a hardened resin layer, and water such as rainwater is surely prevented from entering the space and accumulating here. For example, a connection connecting the existing sash frame and the new sash frame. The tools are not corroded by the accumulated water, the existing sash frame and the new sash frame are maintained in a fixed state, and the water mixed with iron rust does not seep out to prevent the surface of the skeleton from becoming dirty. And its aesthetics are maintained.

（ｂ−２）(B-2) 上記空間部内が樹脂硬化層で満たされていることから、この樹脂硬化層がもつ剛性によって上記既設サッシ枠と新設サッシ枠の間の固定状態が補強され、その分だけサッシ枠全体としての固定性能が高められる。Since the inside of the space is filled with the cured resin layer, the rigidity of the cured resin layer reinforces the fixed state between the existing sash frame and the newly installed sash frame, and the fixing performance of the entire sash frame is increased accordingly. Is enhanced.

（ｂ−３）(B-3) 上記空間部内で発泡性樹脂が発泡膨張して該空間部内に順次拡散移動していく場合、該空間部内の空気は次第に発泡性樹脂の膨張方向前方側へ押しやられ、複数個形成された上記樹脂注入孔から外部へ排出されることから、空気が発泡性樹脂内に巻き込まれて空気溜りとなり、これが発泡性樹脂の硬化後に雨漏りや結露の原因ともなる空洞として残存することが無く、例えば、空間部内に浸入した雨水とか結露による水が空洞を通って室内に浸入するようなことが確実に防止される。When the foamable resin expands and expands in the space portion and sequentially diffuses and moves into the space portion, the air in the space portion is gradually pushed forward in the expansion direction of the foamable resin, and a plurality of the foamable resins are formed. Since the air is discharged to the outside from the injection hole, air is caught in the foamable resin and becomes an air pool, which does not remain as a cavity that causes rain leakage or dew condensation after the foamable resin is cured. For example, a space. It is surely prevented that rainwater or water due to dew condensation entering the part enters the room through the cavity.

（ｂ−４）(B-4) 上記空間部内では、先に注入されて発泡膨張した発泡樹脂層の膨張方向前方側に、後から注入されて発泡膨張した発泡樹脂層が順次積層されることから、該空間部内の空気が発泡樹脂層内に巻き込まれて空気溜りが生成されること、及びこの空気溜りが硬化後に樹脂硬化層内に雨漏りや結露の原因ともなる空洞として残留することが確実に防止され、この結果、空間部内に浸入した雨水とか結露による水が空洞を通って室内に浸入するようなことがより一層確実に防止される。In the space portion, the foamed resin layer injected later and expanded and expanded is sequentially laminated on the front side in the expansion direction of the foamed resin layer injected first and expanded and expanded, so that the air in the space portion is made of foamed resin. It is surely prevented that an air pool is generated by being caught in the layer and that the air pool remains as a cavity that causes rain leakage or dew condensation in the resin cured layer after curing, and as a result, it is prevented in the space portion. It is even more reliable to prevent infiltrated rainwater or water due to dew condensation from entering the room through the cavity.

（ｂ−５）(B-5) 発泡性樹脂の注入作業に際しては、現に注入作業に供している樹脂注入孔よりも発泡膨張方向の前方側に位置する他の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出することを目視することで、該他の樹脂注入孔の部分まで発泡性樹脂が十分に充填されていることを確認することができることから、発泡性樹脂の注入量の不足とか発泡性樹脂の発泡不足等に起因する発泡性樹脂の充填不良等が確実に防止されるとともに、発泡性樹脂の注入作業の容易化によって作業コストの低廉化が促進される。When injecting the foamable resin, a part of the foamed resin layer in the process of foaming overflows from another resin injection hole located on the front side in the foaming expansion direction from the resin injection hole actually used for the injection work. Since it can be confirmed that the foamable resin is sufficiently filled up to the other resin injection holes by visually observing, the injection amount of the foamable resin is insufficient, the foaming of the foamable resin is insufficient, and the like. In addition to reliably preventing defective filling of the foamable resin due to the above, the reduction of the work cost is promoted by facilitating the injection work of the foamable resin.

（ｂ−６）(B-6) 補修後のサッシ枠では、上記樹脂注入孔から溢出して硬化した溢出樹脂部を切除するようにしていることから、サッシ枠周辺の美観性が維持される。In the repaired sash frame, since the overflowing resin portion that overflows from the resin injection hole and is hardened is cut off, the aesthetic appearance around the sash frame is maintained.

（ｂ−７）(B-7) 上記空間部への発泡性樹脂の注入に先立って、上記既設サッシ枠の適所に水抜孔と樹脂注入孔を兼ねる小孔を上記空間部の延設方向に所定間隔で複数個形成し、該小孔を通して、上記各空間部内に溜まった水を抜き取り、しかる後、上記空間部内に発泡性樹脂を注入してこれを発泡硬化させるようにしているので、発泡性樹脂の発泡膨張が水溜りの無い空間部内で行われることになる。Prior to injecting the foamable resin into the space, a plurality of small holes serving as drain holes and resin injection holes are formed at appropriate positions in the existing sash frame at predetermined intervals in the extending direction of the space. The water accumulated in each of the above spaces is drained through the holes, and then the foamable resin is injected into the above spaces to be foamed and cured, so that the foaming expansion of the foaming resin does not cause water accumulation. It will be done in the space part.

本願発明の第１の実施形態に係るサッシ枠の補修方法を適用して行われる補修作業の状態を示す斜視図である。It is a perspective view which shows the state of the repair work performed by applying the repair method of the sash frame which concerns on 1st Embodiment of this invention. 図１のイ−イ拡大断面図であって、樹脂注入作業前における状態を示すものである。It is an enlarged cross-sectional view of the eye of FIG. 1 and shows the state before the resin injection work. 図１のイ−イ拡大断面図であって、樹脂注入作業完了後の状態を示すものである。It is an enlarged cross-sectional view of the eye of FIG. 1 and shows the state after the resin injection work is completed. 図３のロ−ロ矢視図である。It is a roll arrow view of FIG. 既設サッシ枠の内側に新設サッシ枠を取り付けた従来の「かぶせ工法」の一例を示す断面図である。It is sectional drawing which shows an example of the conventional "covering method" which attached the new sash frame inside the existing sash frame.

Ａ：実施形態
図１には、本願発明の実施形態に係る補修方法を適用して補修されるサッシ枠部分、即ち、躯体１に設けた開口部２内に当初から取り付けられている窓又は扉の既設サッシ枠３の内側に、「かぶせ工法」によって該既設サッシ枠３よりも形状の小さい新設サッシ枠４を嵌装して固定してなるサッシ枠部分が示されている。 A: Embodiment In FIG. 1, a sash frame portion to be repaired by applying the repair method according to the embodiment of the present invention, that is, a window or a door installed in an opening 2 provided in the skeleton 1 from the beginning. Inside the existing sash frame 3 of the above, a sash frame portion formed by fitting and fixing a new sash frame 4 having a shape smaller than that of the existing sash frame 3 by a "covering method" is shown.

Ａ−１：既設サッシ枠３及び新設サッシ枠４の具体的構造
上記既設サッシ枠３は、図２に示すように、上記躯体１の開口部２内に嵌装され、且つ適宜の固定具（図示省略）によって該躯体１側に固定されている。上記既設サッシ枠３は所定寸法を隔てて対向する矩形枠状の一対の側壁３ａ、３ａと、これら一対の側壁３ａ、３ａ間を接続する周壁３ｂを備える。この周壁３ｂは、上記側壁３ａの外周端より所定寸法だけ枠中心側へ偏位した位置において、上記側壁３ａの全周に亘って形成されている。なお、上記周壁３ａのうち、上記既設サッシ枠３の下面に対応する部分は、排水性を考慮して、室内側から室外側へ向かって下降傾斜するように形成されている。 A-1: Specific structure of the existing sash frame 3 and the new sash frame 4 As shown in FIG. 2, the existing sash frame 3 is fitted in the opening 2 of the skeleton 1 and has an appropriate fixture ( It is fixed to the skeleton 1 side by (not shown). The existing sash frame 3 includes a pair of rectangular frame-shaped side walls 3a and 3a facing each other with a predetermined dimension thereof, and a peripheral wall 3b connecting the pair of side walls 3a and 3a. The peripheral wall 3b is formed over the entire circumference of the side wall 3a at a position deviated from the outer peripheral end of the side wall 3a toward the center of the frame by a predetermined dimension. The portion of the peripheral wall 3a corresponding to the lower surface of the existing sash frame 3 is formed so as to incline downward from the indoor side to the outdoor side in consideration of drainage.

そして、上記既設サッシ枠３の上記躯体１への固定状態では、該既設サッシ枠３の側壁３ｂの上面側及び左右両側の外周端は、それぞれ上記開口部２の内周上面２ａ及び内周側面２ｃに当接あるいは近接対向しているが、その下面側の外周端は枠取付座５を介して上記開口部２の内周下面２ｂに載置されている。したがって、この固定状態では、上記開口部２の内周上面２ａ及び内周側面２ｃと上記既設サッシ枠３の上記周壁３ｂの間には平矩形の断面形状をもつ空間部２１が形成されている。これに対して、上記枠取付座５と上記既設サッシ枠３の周壁３ｂとの間には略台形の断面形状をもつ空間部２１が形成されている。なお、この空間部２１は、上記既設サッシ枠３の全周に亘って連続している。 Then, in the fixed state of the existing sash frame 3 to the skeleton 1, the upper surface side and the left and right outer peripheral ends of the side wall 3b of the existing sash frame 3 are the inner peripheral upper surface 2a and the inner peripheral side surface of the opening 2, respectively. Although it is in contact with or close to 2c, the outer peripheral end on the lower surface side thereof is placed on the inner peripheral lower surface 2b of the opening 2 via the frame mounting seat 5. Therefore, in this fixed state, a space portion 21 having a flat rectangular cross-sectional shape is formed between the inner peripheral upper surface 2a and the inner peripheral side surface 2c of the opening 2 and the peripheral wall 3b of the existing sash frame 3. .. On the other hand, a space portion 21 having a substantially trapezoidal cross-sectional shape is formed between the frame mounting seat 5 and the peripheral wall 3b of the existing sash frame 3. The space portion 21 is continuous over the entire circumference of the existing sash frame 3.

一方、上記新設サッシ枠４は、「かぶせ工法」によって上記既設サッシ枠３の内側に嵌装され且つ固定されたものであり、その形状は上記既設サッシ枠３の内周形状に略合致した僅かに小さい寸法とされ、その側壁４ａの外周端縁は上記既設サッシ枠３の側壁３ａの内周端縁に対して密接又は近接されており、該新設サッシ枠４の周壁４ｂと上記既設サッシ枠３の周壁３ｂの間にはこれら各サッシ枠３、４の延設方向に連続する空間部２２が形成されている。なお、上記新設サッシ枠４の周壁４ｂは、その下部側においては、上記既設サッシ枠３の周壁３ｂと同様に、排水性を考慮して、室内側から室外側へ向かって下降傾斜されており、上記空間部２２は、この下降傾斜部分において室外側に開口するとともに、着脱可能なシーリング材８によって閉塞されている。 On the other hand, the new sash frame 4 is fitted and fixed to the inside of the existing sash frame 3 by the "covering method", and its shape is slightly matched to the inner peripheral shape of the existing sash frame 3. The outer peripheral edge of the side wall 4a is close to or close to the inner peripheral edge of the side wall 3a of the existing sash frame 3, and the peripheral wall 4b of the new sash frame 4 and the existing sash frame A space portion 22 continuous in the extending direction of each of the sash frames 3 and 4 is formed between the peripheral walls 3b of 3. The peripheral wall 4b of the new sash frame 4 is inclined downward from the indoor side to the outdoor side in consideration of drainage, as in the case of the peripheral wall 3b of the existing sash frame 3, on the lower side thereof. The space portion 22 is opened to the outdoor side at this downwardly inclined portion and is closed by a removable sealing material 8.

そして、上記既設サッシ枠３と上記新設サッシ枠４は、その長手方向（延設方向）に所定間隔（例えば、４００mm程度）で設けられる複数個の連結具６によって、所定の相対位置で固定されている。なお、この実施形態では、上記連結具６を所定長さのボルトで構成し、上記新設サッシ枠４の周壁４ｂにその内面側から挿通してその先端側を上記既設サッシ枠３の周壁３ｂに予め溶接固定したナット６ａに螺合させるようになっている。また、図２において、符号９は上記新設サッシ枠４の内側に取り付けられる建具である。 Then, the existing sash frame 3 and the new sash frame 4 are fixed at predetermined relative positions by a plurality of connecting tools 6 provided at predetermined intervals (for example, about 400 mm) in the longitudinal direction (extension direction) thereof. ing. In this embodiment, the connecting tool 6 is composed of bolts having a predetermined length, is inserted into the peripheral wall 4b of the new sash frame 4 from the inner surface side thereof, and the tip end side thereof is inserted into the peripheral wall 3b of the existing sash frame 3. It is designed to be screwed into a nut 6a that has been welded and fixed in advance. Further, in FIG. 2, reference numeral 9 is a fitting attached to the inside of the newly installed sash frame 4.

Ａ−２：発泡性樹脂注入前の準備作業
Ａ−２−１：上記既設サッシ枠３に対する準備作業
上記既設サッシ枠３に対しては、上記躯体１側の開口部２の内周上面２ａとの間に形成されている上記空間部２１内に溜まった水の水抜き作業と、該空間部２１内への樹脂注入用の樹脂注入孔３１の形成作業が行われるが、この実施形態では、上記樹脂注入孔３１を上記既設サッシ枠３の側壁３ａに形成するに際して、その上下方向における形成位置を、その周壁３ｂの直上位置に設定することで該樹脂注入孔３１を水抜孔に兼用するようにしていることから、専用の水抜孔は設けていない。 A-2: Preparatory work before injecting foamable resin A-2-1: Preparatory work for the existing sash frame 3 With respect to the existing sash frame 3, the inner peripheral upper surface 2a of the opening 2 on the skeleton 1 side The work of draining the water accumulated in the space 21 formed between the spaces 21 and the work of forming the resin injection hole 31 for injecting the resin into the space 21 are performed. In this embodiment, the operation is performed. When the resin injection hole 31 is formed on the side wall 3a of the existing sash frame 3, the formation position in the vertical direction thereof is set to a position directly above the peripheral wall 3b so that the resin injection hole 31 can also be used as a drain hole. Therefore, there is no dedicated drainage hole.

上記樹脂注入孔３１は、図１及び図２に示すように、上記既設サッシ枠３の全周に跨って矩形枠状に延びる室内側の側壁３ａのうち、その底部を除く三部分と、該既設サッシ枠３の底部に配置された上記枠取付座５の側面に、それぞれその長手方向（延設方向）に所定間隔で形成される。ここで、この樹脂注入孔３１の寸法形状は、直径が５〜３０mm程度の円形孔とか、一辺が５〜３０mm程度の矩形孔であることが望ましい。また、この樹脂注入孔３１の形成間隔は、５０〜２００mm程度とするのが望ましい。 As shown in FIGS. 1 and 2, the resin injection hole 31 includes three parts of the side wall 3a on the indoor side extending in a rectangular frame shape over the entire circumference of the existing sash frame 3, excluding the bottom portion, and the resin injection hole 31. The side surfaces of the frame mounting seat 5 arranged at the bottom of the existing sash frame 3 are formed at predetermined intervals in the longitudinal direction (extension direction). Here, it is desirable that the dimensional shape of the resin injection hole 31 is a circular hole having a diameter of about 5 to 30 mm or a rectangular hole having a side of about 5 to 30 mm. Further, it is desirable that the formation interval of the resin injection holes 31 is about 50 to 200 mm.

そして、このように形成された樹脂注入孔３１のうち、上記既設サッシ枠３の上面側に設けた複数個の樹脂注入孔３１と、上記枠取付座５に設けた複数個の樹脂注入孔３１が、水抜孔として機能し、上記空間部２１内に溜まっている水と上記枠取付座５内に溜まっている水は速やかに排出され、これによって、この後に行われる上記空間部２１内への発泡性樹脂の樹脂注入作業において、該空間部２１内に溜まった水に起因する不都合が未然に防止される。 Among the resin injection holes 31 thus formed, the plurality of resin injection holes 31 provided on the upper surface side of the existing sash frame 3 and the plurality of resin injection holes 31 provided in the frame mounting seat 5. However, it functions as a drain hole, and the water accumulated in the space portion 21 and the water accumulated in the frame mounting seat 5 are quickly discharged, whereby the water accumulated in the space portion 21 which is performed after that is quickly discharged into the space portion 21. In the resin injection work of the foamable resin, inconvenience caused by the water accumulated in the space 21 can be prevented.

即ち、発泡性樹脂には、水に触れると発泡不良とか硬化不良を生じ易くなる性状があることから、仮に、空間部２１内に水が溜まっているとすれば、この水が溜まった部分では発泡性樹脂の発泡不良とか硬化不良によって空洞が生じ、これが樹脂硬化層中に空洞として残存することになる。また、発泡性樹脂が発泡不良とか硬化不良を生じるに至らなかった場合でも、水は非圧縮性の流体であることから、空間部２１内に水が溜まっているとすれば、該空間部２１内に注入された発泡性樹脂が発泡膨張しても、この水溜り部分には充填されず、この部分が空間部内の樹脂硬化層中に空洞（水が蒸発した後）として残存することになる。これら樹脂硬化層内に残存する空洞は、上記開口部２に対する上記既設サッシ枠３の固定強度を損ねるとか、サッシ枠の補修作業の完了後において雨水等がこの空洞内に浸入して躯体の表面を汚損する等の原因となるものであるが、これらが全て解消されるものである。 That is, since the foamable resin has a property that foaming failure or curing failure is likely to occur when it comes into contact with water, if water is accumulated in the space portion 21, the portion where the water is accumulated is Cavities are created due to poor foaming or curing of the foamable resin, and these cavities remain in the cured resin layer. Further, even if the foamable resin does not cause foaming failure or curing failure, since water is an incompressible fluid, if water is accumulated in the space portion 21, the space portion 21 Even if the foamable resin injected into the foam expands, the water pool portion is not filled, and this portion remains as a cavity (after the water has evaporated) in the resin cured layer in the space portion. .. The cavities remaining in the resin cured layer impair the fixing strength of the existing sash frame 3 with respect to the opening 2, or rainwater or the like infiltrates into the cavities after the repair work of the sash frame is completed, and the surface of the skeleton. It causes stains on the surface, but all of these are eliminated.

Ａ−２−２：上記新設サッシ枠４に対する準備作業
上記新設サッシ枠４においても、発泡性樹脂注入前の準備作業として、樹脂注入孔３２が形成される。即ち、この実施形態では、図１に示すように、上記樹脂注入孔３２が上記新設サッシ枠４の全周に亘って形成される。そして、その形成位置は図２に示すように、室内側の側壁４ａにおける上記周壁４ｂの直上（直外）位置とされ、その長手方向に所定間隔（５０〜２００mm程度）で複数個形成される。したがって、これら各樹脂注入孔３２のうち、上記新設サッシ枠４の上面側に設けられた樹脂注入孔３２は、該新設サッシ枠４の周壁４ｂの上側に溜まった水の水抜孔として兼用される。なお、この樹脂注入孔３２の寸法形状は、上記既設サッシ枠３側の樹脂注入孔３１の場合と同様に、直径が５〜３０mm程度の円形孔とか、一辺が５〜３０mm程度の矩形孔であることが望ましい。 A-2-2: Preparatory work for the new sash frame 4 The resin injection hole 32 is also formed in the new sash frame 4 as a preparatory work before injecting the foamable resin. That is, in this embodiment, as shown in FIG. 1, the resin injection hole 32 is formed over the entire circumference of the new sash frame 4. Then, as shown in FIG. 2, the formation position is a position directly above (directly outside) the peripheral wall 4b on the side wall 4a on the indoor side, and a plurality of the formation positions are formed at predetermined intervals (about 50 to 200 mm) in the longitudinal direction thereof. .. Therefore, of these resin injection holes 32, the resin injection hole 32 provided on the upper surface side of the new sash frame 4 is also used as a drain hole for water collected on the upper side of the peripheral wall 4b of the new sash frame 4. .. The size and shape of the resin injection hole 32 is a circular hole having a diameter of about 5 to 30 mm or a rectangular hole having a side of about 5 to 30 mm, as in the case of the resin injection hole 31 on the side of the existing sash frame 3. It is desirable to have.

以上のように、例えサッシ枠の補修開始時点において上記空間部２２内に水が溜まっていたとしても、上記樹脂注入孔３２の形成によって、上記新設サッシ枠４の周壁４ｂの上側に溜まった水は該樹脂注入孔３２を通して速やかに外部へ排出される。また、上記新設サッシ枠４の下面側において上記既設サッシ枠３の周壁３ｂの上面に溜まった水は、上記シーリング材８を取り外すことで外部へ排出される。この結果、上記既設サッシ枠３側の水抜効果と同様に、この新設サッシ枠４側においても、該空間部２２内に溜まった水に起因する不都合が未然に解消される。したがって、上記空間部２２内に適正状態で樹脂硬化層１２を形成することができ、既設サッシ枠３と新設サッシ枠４との間の固定状態が該樹脂硬化層１２の剛性によって補強されるとともに、躯体１の表面の汚損発生が未然に防止されることになる。 As described above, even if water has accumulated in the space 22 at the start of repair of the sash frame, the water accumulated on the upper side of the peripheral wall 4b of the newly installed sash frame 4 due to the formation of the resin injection hole 32. Is quickly discharged to the outside through the resin injection hole 32. Further, the water accumulated on the upper surface of the peripheral wall 3b of the existing sash frame 3 on the lower surface side of the new sash frame 4 is discharged to the outside by removing the sealing material 8. As a result, similar to the drainage effect on the existing sash frame 3 side, the inconvenience caused by the water accumulated in the space 22 is eliminated on the new sash frame 4 side as well. Therefore, the resin cured layer 12 can be formed in the space 22 in an appropriate state, and the fixed state between the existing sash frame 3 and the new sash frame 4 is reinforced by the rigidity of the resin cured layer 12. , The occurrence of stains on the surface of the skeleton 1 can be prevented.

Ａ−３：発泡性樹脂の注入作業
上述の準備作業が完了すると、以下に述べる発泡性樹脂の注入作業が行われる。 A-3: Foamable resin injection work When the above-mentioned preparatory work is completed, the foamable resin injection work described below is performed.

上記躯体１と既設サッシ枠３との間に生じた上記空間部２１には、上記既設サッシ枠３に設けた複数の上記樹脂注入孔３１を通して発泡性樹脂の注入作業が行われるが、この空間部２１への発泡性樹脂の注入は、主として上記躯体１と上記既設サッシ枠３の間への水の浸入防止とか、上記躯体１に対する上記既設サッシ枠３の固定状態の補強という目的で行われる。また、上記既設サッシ枠３と上記新設サッシ枠４の間に生じた上記空間部２２には、上記新設サッシ枠４に設けた複数の樹脂注入孔３２を通して発泡性樹脂の注入作業が行われるが、この空間部２２への発泡性樹脂の注入は、主として上記既設サッシ枠３と新設サッシ枠４の間への水の浸入防止とか、該既設サッシ枠３と新設サッシ枠４の固定状態の補強という目的で行われる。このように、これら各空間部２１，２２への発泡性樹脂の注入目的は若干異なるものの、作業の内容、及び発泡性樹脂の注入による作用効果等は同様であるので、ここでは上記既設サッシ枠３と新設サッシ枠４の間の空間部２２への発泡性樹脂の注入作業を例にとって説明し、上記躯体１と既設サッシ枠３の間の空間部２１への注入作業はこれを援用してその説明を省略する。 The space 21 formed between the skeleton 1 and the existing sash frame 3 is filled with foamable resin through a plurality of resin injection holes 31 provided in the existing sash frame 3. The injection of the foamable resin into the portion 21 is mainly performed for the purpose of preventing water from entering between the skeleton 1 and the existing sash frame 3 or reinforcing the fixed state of the existing sash frame 3 with respect to the skeleton 1. .. Further, the foaming resin is injected into the space 22 formed between the existing sash frame 3 and the new sash frame 4 through a plurality of resin injection holes 32 provided in the new sash frame 4. The injection of the foamable resin into the space 22 mainly prevents water from entering between the existing sash frame 3 and the new sash frame 4, or reinforces the fixed state of the existing sash frame 3 and the new sash frame 4. It is done for the purpose. As described above, although the purpose of injecting the foamable resin into each of these spaces 21 and 22 is slightly different, the contents of the work and the action and effect of injecting the foamable resin are the same. Therefore, here, the existing sash frame is described above. The work of injecting the foamable resin into the space portion 22 between the new sash frame 4 and the new sash frame 4 will be described as an example, and this will be used for the work of injecting the foamable resin into the space portion 21 between the skeleton 1 and the existing sash frame 3. The description will be omitted.

ところで、この空間部２２内への発泡性樹脂の注入は、一度の注入作業で完了させることも可能ではあるが、この実施形態においては、上記空間部２２内に形成される樹脂硬化層１２内の空洞の残存防止等の観点から、上記空間部２２内への発泡性樹脂の注入を、所定量ずつ複数回に分けて行うようにしている。ここで、説明の便宜上、上記新設サッシ枠４の長手方向に所定間隔で複数個形成された樹脂注入孔３２のうち、任意の一つを最初に樹脂注入を行うための一番目の樹脂注入孔３２と仮称する。さらに、この一番目の樹脂注入孔３２から一方向に向かって距離が近い順に、２番目の樹脂注入孔、３番目の樹脂注入孔、４番目の樹脂注入孔と仮称する。 By the way, the injection of the foamable resin into the space portion 22 can be completed by a single injection operation, but in this embodiment, the inside of the resin cured layer 12 formed in the space portion 22. From the viewpoint of preventing the remaining cavities of the above, the foaming resin is injected into the space 22 in a predetermined amount in a plurality of times. Here, for convenience of explanation, the first resin injection hole for first injecting any one of the resin injection holes 32 formed at predetermined intervals in the longitudinal direction of the new sash frame 4. It is tentatively called 32. Further, they are tentatively referred to as a second resin injection hole, a third resin injection hole, and a fourth resin injection hole in order of increasing distance from the first resin injection hole 32 in one direction.

そして、先ず、一番目の樹脂注入孔３２から上記空間部２２内に注入ガン（図示省略）を差し入れて該空間部２２内に発泡性樹脂を注入する。注入された発泡性樹脂は、空間部２２内で発泡膨張しながら前方へ拡散移動し、これが２番目の樹脂注入孔３２に達すると発泡途上にある発泡樹脂層の一部が該２番目の樹脂注入孔３２から外部へ溢出する。この溢出量が所定量に達した時点で、上記一番目の樹脂注入孔３２からの発泡性樹脂の注入作業を停止する。 Then, first, an injection gun (not shown) is inserted into the space 22 through the first resin injection hole 32, and the foamable resin is injected into the space 22. The injected foamable resin diffuses and expands forward while expanding and expanding in the space 22, and when this reaches the second resin injection hole 32, a part of the foamed resin layer in the process of foaming is the second resin. It overflows from the injection hole 32 to the outside. When the amount of overflow reaches a predetermined amount, the work of injecting the foamable resin from the first resin injection hole 32 is stopped.

次に、上記２番目の樹脂注入孔３２よりも一つ前方にある３番目の樹脂注入孔３２に注入ガンを差し入れて該空間部２２内に発泡性樹脂を注入し、４番目の樹脂注入孔３２から発泡途上にある発泡樹脂層の一部が所定量溢出した時点で、該３番目の樹脂注入孔３２からの発泡性樹脂の注入作業を停止する。このような発泡性樹脂の注入作業を順次繰り返して行うことで、上記空間部２２内には、図３及び図４に示すように、発泡膨張した発泡性樹脂が硬化してなる樹脂硬化層１２が、発泡膨張方向に向けて多層状に形成されることになる。即ち、図４に便宜的に符号を付したように、一番目の樹脂硬化層１２Ａ、２番目の樹脂硬化層１２Ｂ、三番目の樹脂硬化層１２Ｃ・・・というように多層状に形成される。 Next, the injection gun is inserted into the third resin injection hole 32 one front of the second resin injection hole 32 to inject the foamable resin into the space 22, and the fourth resin injection hole When a predetermined amount of the foamed resin layer in the process of foaming overflows from 32, the work of injecting the foamable resin from the third resin injection hole 32 is stopped. As shown in FIGS. 3 and 4, the resin cured layer 12 is formed by curing the expanded foamed resin in the space 22 by sequentially repeating the injection operation of the foamable resin. However, it will be formed in multiple layers in the foaming expansion direction. That is, as indicated by reference numerals in FIG. 4, the first resin cured layer 12A, the second resin cured layer 12B, the third resin cured layer 12C, and the like are formed in a multi-layered manner. ..

なお、このように上記空間部２２内に多層状の樹脂硬化層１２が形成されると同様に、上記既設サッシ枠３側の上記空間部２１側においても、樹脂硬化層１１が、一番目の樹脂硬化層１１Ａ，２番目の樹脂硬化層１１Ｂ，三番目の樹脂硬化層１１Ｃ・・・というように多層状に形成される（図４参照）。 In the same way that the multilayer resin cured layer 12 is formed in the space portion 22 in this way, the resin cured layer 11 is the first on the space portion 21 side of the existing sash frame 3 side. The resin cured layer 11A, the second resin cured layer 11B, the third resin cured layer 11C, and the like are formed in a multi-layered manner (see FIG. 4).

以上のように、躯体１の開口部２に固定された上記既設サッシ枠３の内側に、「かぶせ工法」によって該既設サッシ枠３の周縁に対して密接又は近接した状態で上記新設サッシ枠４が嵌装され固定されている場合に、上記新設サッシ枠４側に上記樹脂注入孔３２を、上記空間部２２の延設方向に所定間隔で複数個形成し、この樹脂注入孔３２から上記空間部２２内に発泡性樹脂を注入してこれを発泡硬化させて該空間部２２内に樹脂硬化層１２を形成することで、該空間部２２内が上記樹脂硬化層１２で満たされ、該空間部２２内への水の浸入が未然に防止される。したがって、上記空間部２２内に水が浸入してここに溜まるということが確実に防止され、例えば、上記既設サッシ枠３と新設サッシ枠４を連結する連結具６が溜まった水によって腐食されるとか、鉄錆が混入した水が外部に滲み出て躯体１の表面を汚損される等のことが未然に防止される。 As described above, the new sash frame 4 is in close contact with or close to the peripheral edge of the existing sash frame 3 by the "covering method" inside the existing sash frame 3 fixed to the opening 2 of the skeleton 1. Is fitted and fixed, a plurality of the resin injection holes 32 are formed on the side of the newly installed sash frame 4 at predetermined intervals in the extending direction of the space portion 22, and the space is formed from the resin injection holes 32. By injecting a foamable resin into the portion 22 and foam-curing it to form a resin-cured layer 12 in the space portion 22, the space portion 22 is filled with the resin-cured layer 12 and the space is formed. The ingress of water into the portion 22 is prevented. Therefore, it is surely prevented that water infiltrates into the space 22 and accumulates there. For example, the connecting tool 6 connecting the existing sash frame 3 and the new sash frame 4 is corroded by the accumulated water. For example, it is possible to prevent water mixed with iron rust from seeping out and soiling the surface of the skeleton 1.

さらに、上記空間部２２内で発泡性樹脂が発泡膨張して該空間部２２内に順次拡散移動していく場合、該空間部２２内の空気は、次第に発泡性樹脂の膨張方向前方側へ押しやられ、複数個形成された上記樹脂注入孔３２から外部へ排出されることから、空気が発泡性樹脂内に巻き込まれて空気溜りとなり、これが発泡性樹脂の硬化後に空洞として残存することが未然に防止される。この結果、例えば、空間部２２内に浸入した雨水とか結露による水が空洞を通って室内に浸入するようなことが確実に防止される。 Further, when the foamable resin foams and expands in the space portion 22 and sequentially diffuses and moves into the space portion 22, the air in the space portion 22 gradually pushes forward in the expansion direction of the foamable resin. Since the air is discharged to the outside from the resin injection holes 32 formed in a plurality of pieces, air is caught in the foamable resin and becomes an air pool, which may remain as a cavity after the foaming resin is cured. Be prevented. As a result, for example, rainwater that has entered the space 22 or water due to dew condensation is surely prevented from entering the room through the cavity.

一方、この実施形態では、上記空間部２２への発泡性樹脂の注入作業を、上記新設サッシ枠４に所定間隔で複数個設けられた上記樹脂注入孔３２を介して段階的に行うようにしているので、上記空間部２２内では、先に注入されて発泡膨張した発泡樹脂層の膨張方向前方側に、後から注入されて発泡膨張した発泡樹脂層が順次積層されることから、該空間部内の空気が発泡性樹脂内に巻き込まれて空気溜りが生成されること、及びこの空気溜りが硬化後の樹脂硬化層１２内に空洞として残留することがより一層確実に防止されることになる。 On the other hand, in this embodiment, the work of injecting the foamable resin into the space 22 is performed stepwise through the resin injection holes 32 provided in the new sash frame 4 at predetermined intervals. Therefore, in the space portion 22, the foamed resin layer injected later and expanded by foaming is sequentially laminated on the front side in the expansion direction of the foamed resin layer injected earlier and expanded by foaming. It is possible to more reliably prevent the air from being entrained in the foamable resin to form an air pool, and the air pool to remain as a cavity in the cured resin layer 12 after curing.

なお、この実施形態では、上記新設サッシ枠４に設けられる樹脂注入孔３２の形成間隔を５０〜２００mmの範囲に設定するようにしているが、この間隔が大きくなり過ぎると上記空間部２２内で発泡性樹脂を発泡させた場合、該発泡性樹脂の膨張変化に伴い、該空間部２２内の空気が逃げ場を失って圧縮され、発泡した樹脂層内に内圧の高い空気溜りが生じ易くなるため好ましくない。また、逆に、上記間隔が狭すぎると、新設サッシ枠４の剛性が損なわれその強度性能が低下する恐れがあるため好ましくない。このような観点から上記のように樹脂注入孔３２の形成間隔を「５０〜２００mm」の範囲に設定したものである。 In this embodiment, the formation interval of the resin injection holes 32 provided in the newly installed sash frame 4 is set in the range of 50 to 200 mm, but if this interval becomes too large, the space portion 22 is used. When the foamable resin is foamed, the air in the space 22 loses a place to escape and is compressed as the expansion of the foamable resin changes, and an air pool having a high internal pressure is likely to be generated in the foamed resin layer. Not preferable. On the contrary, if the interval is too narrow, the rigidity of the newly installed sash frame 4 may be impaired and the strength performance thereof may be deteriorated, which is not preferable. From this point of view, the formation interval of the resin injection holes 32 is set in the range of "50 to 200 mm" as described above.

また、発泡性樹脂の注入作業に際しては、現に注入作業に供している樹脂注入孔３２よりも発泡膨張方向の前方側に位置する他の樹脂注入孔３２から発泡途上にある発泡樹脂層の一部が溢出することを目視することで、該他の樹脂注入孔３２の部分まで発泡性樹脂が十分に充填されていることを確認することができることから、発泡性樹脂の注入量の不足とか発泡性樹脂の発泡不足等に起因する発泡性樹脂の充填不良等が確実に防止され、これにより上記既設サッシ枠３と新設サッシ枠４の固定強度が良好に維持されるとともに、発泡性樹脂の注入作業が容易となり作業コストの低廉化が促進される。 Further, when injecting the foamable resin, a part of the foamed resin layer in the process of foaming from another resin injection hole 32 located on the front side in the foaming expansion direction with respect to the resin injection hole 32 actually used for the injection work. By visually observing the overflow of the foam, it can be confirmed that the foamable resin is sufficiently filled up to the portion of the other resin injection holes 32, so that the injection amount of the foamable resin is insufficient or the foamability is foamable. Poor filling of the foamable resin due to insufficient foaming of the resin is surely prevented, whereby the fixing strength of the existing sash frame 3 and the newly installed sash frame 4 is maintained well, and the foaming resin injection work is performed. This facilitates the reduction of work costs.

なお、上記発泡性樹脂としては、ウレタン系樹脂、エポキシ系樹脂、アクリル系樹脂またはオレフィン系樹脂など、液体の樹脂原料を化学反応により発泡及び硬化させることができる樹脂、あるいは液体の樹脂原料に、窒素、ＬＰＧまたはフロン等の気体を導入して気泡を形成させつつ硬化させることができる樹脂が好適である。特に、２種類の液体樹脂原料を混合することで化学反応を生じさせ、発泡及び硬化させる硬質ポリウレタン樹脂は扱い易く、硬化後の圧縮強度が大きいためより好ましい。 The foamable resin may be a resin capable of foaming and curing a liquid resin raw material by a chemical reaction, such as a urethane resin, an epoxy resin, an acrylic resin or an olefin resin, or a liquid resin raw material. A resin that can be cured while forming bubbles by introducing a gas such as nitrogen, LPG or Freon is preferable. In particular, a rigid polyurethane resin that causes a chemical reaction by mixing two types of liquid resin raw materials to be foamed and cured is more preferable because it is easy to handle and has a high compressive strength after curing.

Ａ−４：サッシ枠の補修状態の検査
上述のように、上記新設サッシ枠４に設けた上記各樹脂注入孔３２から上記空間部２２への樹脂注入が完了し、発泡膨張した発泡性樹脂が硬化して上記樹脂硬化層１２が形成された後、上記新設サッシ枠４の上記各樹脂注入孔３２から溢出して硬化した溢出樹脂部を切除する。 A-4: Inspection of the repaired state of the sash frame As described above, the resin injection from each of the resin injection holes 32 provided in the newly installed sash frame 4 into the space 22 is completed, and the foamed and expanded foamy resin is formed. After curing to form the resin cured layer 12, the overflowing resin portion that overflows from each of the resin injection holes 32 of the newly installed sash frame 4 and is cured is cut off.

この溢出樹脂部の切除によって、樹脂硬化層１２の樹脂断面が外部に露出することになる。この樹脂断面を観察することで上記既設サッシ枠３と上記新設サッシ枠４の補修状態の良否を検査することができる。即ち、上記空間部２２内の樹脂硬化層１２の比較的深部で生じている硬化不良とか、空気溜りに起因する空洞の発生を高い確率で発見することができ、目視検査による検査精度及び信頼性が向上する。また、これによって上記既設サッシ枠３と新設サッシ枠４に対する補修の信頼性が担保されるとともに、もし、検査によって硬化不良や空気溜りとか空洞が発見された場合には、施工のやり直し、あるいは部分的な補修等の対応措置を迅速に執ることができるものである。 By cutting off the overflowing resin portion, the resin cross section of the resin cured layer 12 is exposed to the outside. By observing this resin cross section, it is possible to inspect whether the repaired state of the existing sash frame 3 and the new sash frame 4 is good or bad. That is, it is possible to detect with a high probability the occurrence of curing defects or cavities caused by air pools occurring in a relatively deep part of the resin cured layer 12 in the space portion 22, and the inspection accuracy and reliability by visual inspection can be detected. Is improved. In addition, this ensures the reliability of repairs to the existing sash frame 3 and the new sash frame 4, and if the inspection finds poor curing, air pools, or cavities, the construction may be redone or a part. It is possible to promptly take countermeasures such as repairs.

なお、この実施形態では、上記樹脂注入孔３２の寸法は、樹脂注入孔３２が円形孔である場合には直径５〜３０mmに設定し、樹脂注入孔３２が矩形孔である場合には一辺５〜３０mmに設定するようにしているが、樹脂注入孔３２の寸法を小さくし過ぎると、溢出樹脂部を切除した際の樹脂断面が小さくなり観察が困難となるため好ましくない。また逆に、大きくし過ぎると、新設サッシ枠４の剛性が損なわれその強度性能が低下する恐れがあるため好ましくない。 In this embodiment, the dimensions of the resin injection hole 32 are set to a diameter of 5 to 30 mm when the resin injection hole 32 is a circular hole, and one side 5 when the resin injection hole 32 is a rectangular hole. Although it is set to about 30 mm, if the size of the resin injection hole 32 is made too small, the resin cross section when the overflow resin portion is excised becomes small and observation becomes difficult, which is not preferable. On the contrary, if it is made too large, the rigidity of the newly installed sash frame 4 may be impaired and the strength performance thereof may be deteriorated, which is not preferable.

本願発明に係るサッシ枠の補修方法は、サッシ枠のリフォーム作業において利用されるものである。 The method for repairing the sash frame according to the present invention is used in the remodeling work of the sash frame.

１・・躯体
２・・開口部
３・・既設サッシ枠
４・・新設サッシ枠
５・・枠取付座
６・・連結具
７・・シーリング材
８・・シーリング材
９・・建具
１１・・樹脂硬化層
１２・・樹脂硬化層
１４・・帯状開口
１５・・帯状開口
２１・・空間部
２２・・空間部
３１・・樹脂注入孔
３２・・樹脂注入孔
1 ・・ Frame 2 ・・ Opening 3 ・・ Existing sash frame 4 ・・ New sash frame 5 ・・ Frame mounting seat 6 ・・ Connecting tool 7 ・・ Sealing material 8 ・・ Sealing material 9 ・・ Joining tool 11 ・・ Resin Hardened layer 12 ・・ Resin cured layer 14 ・・ Band-shaped opening 15 ・・ Band-shaped opening 21 ・・ Space part 22 ・・ Space part 31 ・・ Resin injection hole 32 ・・ Resin injection hole

Claims

躯体の開口部に固定された既設サッシ枠の内側に、該既設サッシ枠の周縁に対して密接又は近接した状態で新設サッシ枠を嵌装して固定してなるサッシ枠で、上記既設サッシ枠の内周面と上記新設サッシ枠の外周面の間に形成されてその周方向に延びる空間部に水が溜まったサッシ枠の補修方法であって、
上記新設サッシ枠の側面に、水抜孔と樹脂注入孔を兼ねる小孔を上記空間部の延設方向に所定間隔で複数個形成し、該小孔を通して、上記各空間部内に溜まった水を抜き取り、
しかる後、上記小孔から上記空間部内に発泡性樹脂を注入してこれを発泡硬化させるが、その際、上記複数の小孔のうち、任意の小孔を１番目の樹脂注入孔とし、該１番目の樹脂注入孔から近い側の小孔から順次２番目の樹脂注入孔、３番目の樹脂注入孔、４番目の樹脂注入孔とし、上記１番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記２番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止し、次いで、上記３番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記４番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止するものとし、
係る段階的な発泡性樹脂の注入作業を繰り返すことで上記空間部内に発泡性樹脂を充填しこれを硬化させて樹脂硬化層を形成するとともに、上記樹脂注入孔から溢出して硬化した溢出樹脂部を切除する、
ことを特徴とするサッシ枠の補修方法。 The existing sash frame is a sash frame that is fixed by fitting a new sash frame inside the existing sash frame fixed to the opening of the skeleton in a state of being close to or close to the peripheral edge of the existing sash frame. This is a method of repairing a sash frame that is formed between the inner peripheral surface of the sash frame and the outer peripheral surface of the new sash frame and has water accumulated in a space extending in the circumferential direction .
A side surface of the new sash frame, draining small holes serving as a hole and a resin injection hole plurality formed at predetermined intervals in the extending direction of the space portion through said small holes, withdrawn water collected each space portion ,
After that, a foamable resin is injected into the space from the small holes to foam and cure the foam. At that time , any small hole among the plurality of small holes is designated as the first resin injection hole. The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially formed from the small holes on the side closer to the first resin injection hole, and foamability is formed in the space from the first resin injection hole. The resin is injected and foamed and expanded, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole, and then the third resin injection is performed. A foamable resin is injected into the space through the holes to expand the foam, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the fourth resin injection hole. age,
By repeating the stepwise injection work of the foamable resin, the foamable resin is filled in the space and cured to form a resin cured layer, and the overflow resin portion that overflows from the resin injection hole and is cured. To excise
A method of repairing the sash frame, which is characterized by this.

躯体の開口部に固定された既設サッシ枠の内側に、該既設サッシ枠の周縁に対して密接又は近接した状態で新設サッシ枠を嵌装して固定してなるサッシ枠で、上記躯体の開口部の内周面とこれに対向する上記既設サッシ枠の外周面との間に形成されてその周方向に延びる空間部に水が溜まったサッシ枠の補修方法であって、
上記既設サッシ枠の側面に、水抜孔と樹脂注入孔を兼ねる小孔を上記空間部の延設方向に所定間隔で複数個形成し、該小孔を通して、上記各空間部内に溜まった水を抜き取り、
しかる後、上記小孔から上記空間部内に発泡性樹脂を注入してこれを発泡硬化させるが、その際、上記複数の小孔のうち、任意の小孔を１番目の樹脂注入孔とし、該１番目の樹脂注入孔から近い側の小孔から順次２番目の樹脂注入孔、３番目の樹脂注入孔、４番目の樹脂注入孔とし、上記１番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記２番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止し、次いで、上記３番目の樹脂注入孔から上記空間部内に発泡性樹脂を注入しこれを発泡膨張させ、上記４番目の樹脂注入孔から発泡途上にある発泡樹脂層の一部が溢出する程度において発泡性樹脂の注入を停止するものとし、
係る段階的な発泡性樹脂の注入作業を繰り返すことで上記空間部内に発泡性樹脂を充填しこれを硬化させて樹脂硬化層を形成するとともに、上記樹脂注入孔から溢出して硬化した溢出樹脂部を切除する、
ことを特徴とするサッシ枠の補修方法。 Inside the existing sash frame which is fixed to the opening of the skeleton, the existing in sash frame formed of a fixed and fitted with new sash frame in close or close state against the peripheral edge of the sash frame, the opening of the skeleton It is a method of repairing a sash frame formed between an inner peripheral surface of a portion and an outer peripheral surface of the existing sash frame facing the inner peripheral surface and in which water is collected in a space extending in the circumferential direction .
A side surface of the existing sash frame, draining small holes serving as a hole and a resin injection hole plurality formed at predetermined intervals in the extending direction of the space portion through said small holes, withdrawn water collected each space portion ,
After that, a foamable resin is injected into the space from the small holes to foam and cure the foam. At that time , any small hole among the plurality of small holes is designated as the first resin injection hole. The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially formed from the small holes on the side closer to the first resin injection hole, and foamability is formed in the space from the first resin injection hole. The resin is injected and foamed and expanded, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole, and then the third resin injection is performed. A foamable resin is injected into the space through the holes to expand the foam, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the fourth resin injection hole. age,
By repeating the stepwise injection work of the foamable resin, the foamable resin is filled in the space and cured to form a resin cured layer, and the overflow resin portion that overflows from the resin injection hole and is cured. To excise
A method of repairing the sash frame, which is characterized by this.