JP2018031155A - Repair method for sash frame and inspection method on repaired state - Google Patents

Repair method for sash frame and inspection method on repaired state Download PDF

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JP2018031155A
JP2018031155A JP2016163104A JP2016163104A JP2018031155A JP 2018031155 A JP2018031155 A JP 2018031155A JP 2016163104 A JP2016163104 A JP 2016163104A JP 2016163104 A JP2016163104 A JP 2016163104A JP 2018031155 A JP2018031155 A JP 2018031155A
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resin
sash frame
space
cured
injection hole
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JP6713655B2 (en
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知成 饒平名
Tomonari Yohena
知成 饒平名
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Bac Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a repair method for a sash frame and an inspection method on a repaired state used when repairing the sash frame by injecting a foaming resin, the sash frame being made by fixing a new sash frame inside an existing sash frame, and the repair method being capable of preventing pooling of water in a space formed on the sash frame side, reinforcing a fixed state of each sash, and preventing formation of a cavity when the foaming resin is foamed.SOLUTION: When repairing a sash frame made by fitting and fixing a new sash frame 4 inside an existing sash frame 3 fixed on an opening 2 of a building frame 1, a foaming resin is injected from a belt-like opening 14 into a space 22 formed between an inner peripheral surface of the existing sash frame 3 and an outer peripheral surface of the new sash frame 4, and the foaming resin is foamed and hardened to form a resin hardening layer 12 in the space 22.SELECTED DRAWING: Figure 3

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及びその補修状態の検査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 housing, and an inspection method for the repaired state.

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 sash frames such as aging windows and doors, it is known to fix the new sash frame inside the existing sash frame without removing the existing sash frame. The method of fixing the new sash frame to the existing sash frame is roughly divided into the following two 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 method called “covering method” or “cover method”. For example, as shown in Patent Document 1, a new sash frame is fitted inside an existing sash frame. In this method, the gap is fixed by welding or screwing via a connecting member. The other one is, for example, as shown in Patent Document 2, by injecting a foamable resin into a space formed between an existing sash frame and a new sash frame, and curing the foamed resin through the resin cured layer. In this method, the new sash frame is fixed to the existing sash frame.

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

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 attached from the beginning to the opening 2 provided in the housing 1 has become old, so that it is newly added to the inside of the existing sash frame 3. A state is shown in which a newly installed sash frame 4 is fitted and both are fixed via a connector 6.

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 more than the outer peripheral surface 3b. Is also formed at a position retracted toward the center of the frame, so that 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 at its lower edge to the inner peripheral surface of the opening 2 via a frame mounting seat 5 as an accessory of the existing sash frame 3. Then, the space 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。   A space 22 is formed between the peripheral wall 3 a of the existing sash frame 3 and the peripheral wall 4 a of the new sash frame 4. And this space part 22 is in the state which faces outside through the strip | belt-shaped opening 14 and 15 opened on both the front and back both surfaces of this existing sash frame 3 and the new sash frame 4, and these each strip | belt-shaped opening 14 and 15 are the state. Sealed by 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内に配置されれいる鉄製の連結具（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 the state in which the new sash frame 4 is attached to the inside of the existing sash frame 3 by the “covering method” and the both are integrated, as described above, the inside of the opening 2 of the casing 1 Since the space 21 is formed between the peripheral surface 2a and the peripheral wall 3a of the existing sash frame 3, for example, when the casing 1 is cracked due to aging of the casing 1, Water W such as rain water may enter the space 21 through the cracks and accumulate there. Then, if the water W collected in the space portion 21 is left, for example, an iron connector (not shown) disposed in the space portion 21 to fix the existing sash frame 3 to the housing 1. There is a concern that the fixing strength of the existing sash frame 3 may be impaired due to corrosion, or that the water W contaminated by the mixing of iron rust may ooze out to the surface side of the housing 1 and contaminate the surroundings.

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 formed between the peripheral wall 3a of the existing sash frame 3 and the peripheral wall 4a of the new sash frame 4, for example, progress of aging due to long-term use or poor construction, etc. As a result of this, water W such as rainwater may enter the space 22 from the gaps between the sealing materials 7 and 8 and the existing sash frame 3 and the new sash frame 4 and accumulate there. If the water W collected in the space 22 is left as it is, the iron connecting tool 6 is corroded, and the connection strength between the existing sash frame 3 and the new sash frame 4 is impaired, or iron rust is mixed. Then, there is a concern that the brown water W may ooze out from the gap between the sealing materials 7, 8 and the existing sash frame 3 and the new sash frame 4 to stain the wall surface of the housing 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、該各空間部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。   Such problems caused by the ingress of rainwater into the spaces 21 and 22 due to the aging of the existing sash frame 3 and the new sash frame 4 can be removed by removing the existing sash frame 3 and the new sash frame 4 In order to solve 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 construction methods useful as this repairing method, a foamable resin is injected and cured in each of the space portions 21 and 22, and the space portions 21 and 22 are filled with a cured resin layer. It is conceivable to prevent the intrusion of water into the spaces 21 and 22 and the occurrence of water pools.

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 such a repair method by injection of foamable resin is applied to the repair of the existing sash frame 3 and the new sash frame 4, the above problems are not all solved. That is, even if the foaming resin injection method is adopted, the foamable resin can be sufficiently applied to the entire space parts 21 and 22 by simply injecting the foaming resin into the space parts 21 and 22 and foaming. However, the air reservoir is generated in some places, and the air reservoir becomes a cavity after the foamable resin is cured and remains in the cured resin layer. And if a cavity remains in such a resin cured layer, there arises a problem that rainwater or water due to condensation that has entered the spaces 21 and 22 enters the room through the cavity. 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及び補修状態検査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, the invention of the present application is to inject foamable resin into each space generated between the three bodies of the housing, the existing sash frame, and the new sash frame and fill each space with a foamed resin layer. It can prevent the occurrence of water pools, can reinforce the fixed state between the frame and the existing sash frame, and between the existing sash frame and the new sash frame, and also creates cavities when filling the above spaces with foamable resin It was made for the purpose of proposing the repair method of a sash frame and the repair state inspection method which can prevent.

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、該既設サッシ枠の表裏両面の少なくとも何れか一方側においてその周縁との間に所定幅の帯状開口を形成した状態で新設サッシ枠を嵌装して固定するとともに該帯状開口をシーリング材によって封止してなるサッシ枠の補修方法において、上記シーリング材を取り外して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た空間部を上記帯状開口を介して外部に臨ませ、しかる後、上記帯状開口から上記空間部内に発泡性樹脂を注入し、発泡樹脂層の一部を上記帯状開口の略全域から外方へ溢出させて硬化させた後、この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, a belt-like opening having a predetermined width is formed on the inner side of the existing sash frame fixed to the opening of the housing and at least one of the front and back surfaces of the existing sash frame and the periphery thereof. In the repair method of the sash frame, in which the new sash frame is fitted and fixed in a state where the belt-shaped opening is sealed with a sealing material, the sealing material is removed and the inner peripheral surface of the existing sash frame and the new installation The space formed between the outer peripheral surfaces of the sash frame is exposed to the outside through the band-shaped opening, and then, a foamable resin is injected into the space from the band-shaped opening, and a part of the foamed resin layer is injected. After overflowing and curing from substantially the entire area of the belt-shaped opening, the overflow resin portion is cut off.

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。   In addition, 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, A resin that can be cured while introducing bubbles such as nitrogen, LPG, or chlorofluorocarbon is preferred. In particular, a hard polyurethane resin which causes a chemical reaction by mixing two kinds of liquid resin raw materials and foams and cures is easy to handle and is more preferable because it has a high compressive strength after curing.

本願の第２の発明では、上記第１の発明に係るサッシ枠の補修方法において、上記空間部内に発泡性樹脂を注入して発泡させるに際し、樹脂注入作業を複数回に分けて行うものとし、先の樹脂注入により形成された発泡樹脂層の上に、後の樹脂注入に係る発泡樹脂層を順次重ねて形成することで上記空間部の略全域に発泡性樹脂を充填し、最終の注入による発泡樹脂層の一部を上記帯状開口の略全域から外方へ溢出させて硬化させることで該空間部内に樹脂硬化層を形成するとともに、該帯状開口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, in the repair method of the sash frame according to the first invention, when the foamable resin is injected into the space portion and foamed, the resin injection operation is performed in a plurality of times. By filling the foamed resin layer related to the subsequent resin injection on the foamed resin layer formed by the previous resin injection, the foamable resin is filled in almost the entire space, and the final injection is performed. A part of the foamed resin layer overflows from substantially the entire area of the band-shaped opening and is cured to form a cured resin layer in the space, and the overflowed resin part that has overflowed and hardened from the band-shaped opening is excised. It is characterized by doing.

本願の第３の発明では、上記第１又は第２の発明に係るサッシ枠の補修方法において、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連通する樹脂注入孔を、上記既設サッシ枠又はその付属部材の側面に上記空間部の延設方向に所定間隔で複数個形成し、しかる後、上記樹脂注入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ことで該空間部内に樹脂硬化層を形成することを特徴としている。   According to a third invention of the present application, in the sash frame repair method according to the first or second invention, between the inner peripheral surface of the opening of the housing and the outer peripheral surface of the existing sash frame facing the sash frame. A plurality of resin injection holes that are formed and communicate with the space extending in the circumferential direction are formed at predetermined intervals in the extending direction of the space portion on the side surface of the existing sash frame or the accessory member, and then the resin A resin-cured layer is formed in the space part by injecting a foamable resin into the space part from the injection hole and foaming and curing the resin.

本願の第４の発明では、上記第３の発明に係るサッシ枠の補修方法において、上記空間部への発泡性樹脂の注入作業を複数回に分けて行うものとし、上記樹脂注入孔を上記空間部の延設方向に所定間隔で複数個形成し、上記複数の樹脂注入孔のうち、任意の樹脂注入孔を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該空間部内に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。   According to a fourth invention of the present application, in the sash frame repair method according to the third invention, the foaming resin injection operation into the space is performed in a plurality of times, and the resin injection hole is formed in the space. A plurality of resin injection holes are formed at predetermined intervals in the extending direction of the portion, and among the plurality of resin injection holes, an arbitrary resin injection hole is used as the first resin injection hole, and 2 in order from the side closer to the first resin injection hole The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are formed, and a foamable resin is injected into the space portion from the first resin injection hole, and the second resin injection hole is expanded and expanded. The injection of the foamable resin is stopped to such an extent that a part of the foamed resin layer that is in the process of foaming overflows from the injection hole, and then the foamable resin is injected into the space from the third resin injection hole. Inflate and foam from the fourth resin injection hole The injection of the foamable resin is stopped to the extent that a part of the foamed resin layer overflows, and the above-mentioned space portion is filled with the foamable resin by repeating such stepwise foaming resin injection operation. Is cured to form a cured resin layer in the space, and the overflowed resin portion overflowing from the resin injection hole and cured is cut off.

本願の第５の発明では、上記第１、第２、第３又は第４の発明に係るサッシ枠の補修方法において、上記空間部への発泡性樹脂の注入に先立って、上記既設サッシ枠及び上記新設サッシ枠の適所に水抜孔を適数個形成し、該水抜孔を通して上記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ことを特徴としている。   In a fifth invention of the present application, in the sash frame repairing method according to the first, second, third or fourth invention, prior to the injection of the foamable resin into the space portion, the existing sash frame and Form an appropriate number of drainage holes at appropriate locations in the new sash frame, drain water accumulated in the space through the drainage holes, and then inject foamable resin into the space to foam and cure it. It is characterized by.

本願の第６の発明では、上記第１又は第２の発明に係るサッシ枠の補修方法によって補修されたサッシ枠の補修状態を検査する補修状態検査方法において、上記帯状開口から外方へ溢出して硬化した溢出樹脂部を切除することで形成される樹脂断面を観察することでサッシ枠の補修状態の良否を検査することを特徴としている。   In the sixth invention of the present application, in the repair state inspection method for inspecting the repair state of the sash frame repaired by the sash frame repair method according to the first or second invention, the sash frame overflows outward from the belt-shaped opening. It is characterized in that the quality of the repaired state of the sash frame is inspected by observing the cross section of the resin formed by cutting out the overflowed resin part cured.

本願の第７の発明では、上記第４の発明に係るサッシ枠の補修方法によって補修されたサッシ枠の補修状態を検査する補修状態検査方法において、上記樹脂注入孔から外部へ溢出して硬化した溢出樹脂部を切除することで形成される樹脂断面を観察することでサッシ枠の補修状態の良否を検査することを特徴としている。   In the seventh invention of the present application, in the repair state inspection method for inspecting the repair state of the sash frame repaired by the sash frame repair method according to the fourth invention, the resin overflows from the resin injection hole and hardens. It is characterized by inspecting the quality of the repaired state of the sash frame by observing the cross section of the resin formed by excising the overflow resin part.

（ａ）本願の第１の発明
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、該既設サッシ枠の表裏両面の少なくとも何れか一方側においてその周縁との間に所定幅の帯状開口を形成した状態で新設サッシ枠を嵌装して固定するとともに該帯状開口をシーリング材によって封止してなるサッシ枠の補修方法において、上記シーリング材を取り外して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た空間部を上記帯状開口を介して外部に臨ませ、しかる後、上記帯状開口から上記空間部内に発泡性樹脂を注入し、発泡樹脂層の一部を上記帯状開口の略全域から外方へ溢出させて硬化させた後、この溢出樹脂部を切除するようにしているので、上記空間部内は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強度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) 1st invention of this application In 1st invention of this application, it is the inner periphery of the existing sash frame fixed to the opening part of the housing, and the periphery in at least any one side of both the front and back of this existing sash frame In a repair method for a sash frame, in which a new sash frame is fitted and fixed with a band-shaped opening having a predetermined width therebetween, and the band-shaped opening is sealed with a sealing material, the sealing material is removed and the existing sash frame is removed The space formed between the inner peripheral surface of the sash frame and the outer peripheral surface of the new sash frame is exposed to the outside through the band-shaped opening, and then the foamable resin is injected into the space from the band-shaped opening. The foamed resin layer overflows outward from substantially the entire area of the belt-shaped opening and is cured, and then the overflowed resin portion is cut out, so that the space is filled with the resin cured layer. And the space It is reliably prevented that water such as rainwater enters and accumulates in the interior, for example, the connecting tool for connecting the existing sash frame and the new sash frame is not corroded by the accumulated water. The fixing strength of the sash frame and the newly installed sash frame is maintained, and water contaminated with iron rust does not ooze out to prevent the surface of the casing from being soiled and maintain its aesthetics.

また、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。   In addition, since the inside of the space is filled with the resin cured layer, the rigidity of the resin cured layer reinforces the fixed state between the existing sash frame and the newly installed sash frame, and accordingly, the sash frame as a whole is reinforced. Fixing performance is improved.

さらに、上記空間部内での発泡性樹脂の発泡膨張時には、該空間部内の空気は、発泡膨張の進展に伴って上記帯状開口から外部へ排出され、発泡樹脂層内に巻き込まれて封入されるのが防止される。したがって、上記空間部内の発泡樹脂層内に空気溜りが発生すること、さらにこの空気溜りに起因して樹脂硬化層内に雨漏りや結露の原因ともなる空洞が発生するのが確実に防止され、この結果、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。   Furthermore, when the foamable resin expands and expands in the space, the air in the space is discharged from the band-shaped opening to the outside as the expansion of the foam expands, and is entrained and enclosed in the foamed resin layer. Is prevented. Therefore, it is reliably prevented that an air pocket is generated in the foamed resin layer in the space, and that a cavity that causes rain leakage and condensation is generated in the cured resin layer due to the air pool. As a result, for example, rainwater that has entered the space or water due to condensation can be reliably prevented from entering the room through the cavity.

また、補修後のサッシ枠では、上記帯状開口から外方へ溢出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。   Moreover, in the sash frame after repair, since the overflow resin part which overflowed outward from the said strip | belt-shaped opening is cut off, the aesthetics around a sash frame are maintained.

（ｂ）本願の第２の発明
本願の第２の発明では、上記（ａ）に記載の効果に加えて以下のような特有の効果が得られる。即ち、この発明では、上記空間部内に発泡性樹脂を注入して発泡させるに際し、樹脂注入作業を複数回に分けて行うものとし、先の樹脂注入により形成された発泡樹脂層の上に、後の樹脂注入に係る発泡樹脂層を順次重ねて形成することで上記空間部の略全域に発泡性樹脂を充填し、最終の注入による発泡樹脂層の一部を上記帯状開口の略全域から外方へ溢出させて硬化させることで該空間部内に樹脂硬化層を形成するとともに、該帯状開口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、上記空間部内に発泡樹脂層が該空間部の厚さ方向に多層状に重ねて形成されることとなり、仮にこれら多層状の発泡樹脂層の何れかに空気溜りとか硬化不良が生じたとしても、これ以外の他の発泡樹脂層が空気溜りとか硬化不良の無い正常な発泡樹脂層であれば、この正常な発泡樹脂層によってサッシ枠固定部分のシール性が確保され、雨漏りや結露の無い信頼性の高いサッシ枠が得られる。 (B) Second invention of the present application In the second invention of the present application, in addition to the effects described in (a) above, the following specific effects are obtained. That is, according to the present invention, when the foamable resin is injected into the space portion and foamed, the resin injection operation is performed in a plurality of times, and on the foamed resin layer formed by the previous resin injection, The foamed resin layer related to the injection of the resin is sequentially stacked and filled with the foamable resin over substantially the entire area of the space, and a part of the foamed resin layer by the final injection is outward from the substantially entire area of the band-shaped opening. The cured resin layer is formed in the space portion by overflowing and cured, and the overflowed resin portion overflowing and cured from the band-shaped opening is excised, so that the foamed resin layer is formed in the space portion. It will be formed in multiple layers in the thickness direction of the space, and even if any of these multi-layer foamed resin layers have air retention or poor curing, other foamed resin layers other than this No air traps or poor curing If normal foam resin layer, the normal sealing of sash frame fixing portion is secured by the foamed resin layer, without dripping or condensation reliable sash frame is obtained.

また、最終の樹脂注入による発泡性樹脂層のうち、帯状開口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、該帯状開口部分の美観性が維持されるとともに、事後的に該帯状開口をシーリング材によって封止する場合にはこれら該帯状開口部分のシール性が良好に維持される。   In addition, since the overflowing resin portion that has overflowed from the band-shaped opening and hardened out of the foamable resin layer by the final resin injection is cut off, the aesthetics of the band-shaped opening portion can be maintained, and afterwards When the band-shaped openings are sealed with a sealing material, the sealing performance of the band-shaped openings is maintained well.

（ｃ）本願の第３の発明
本願の第３の発明では、上記（ａ）又は（ｂ）に記載の効果に加えて以下のような特有の効果が得られる。即ち、この発明では、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連通する樹脂注入孔を、上記既設サッシ枠又はその付属部材の側面に上記空間部の延設方向に所定間隔で複数個形成し、しかる後、上記樹脂注入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ことで該空間部内に樹脂硬化層を形成するようにしているので、上記空間部内が樹脂硬化層で満たされ、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、上記開口部の内周面と上記既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ことが無く、躯体と既設サッシ枠の固定性能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る。 (C) Third invention of the present application In the third invention of the present application, in addition to the effects described in the above (a) or (b), the following specific effects can be obtained. That is, in the present invention, the resin injection hole that is formed between the inner peripheral surface of the opening of the housing and the outer peripheral surface of the existing sash frame that faces the opening and communicates with the space extending in the circumferential direction, A plurality of the sash frame or its attached members are formed at a predetermined interval in the extending direction of the space portion, and then a foamable resin is injected into the space portion from the resin injection hole and is foam-cured. In this way, the cured resin layer is formed in the space portion, so that the space portion is filled with the cured resin layer, and it is reliably prevented that water such as rainwater enters and accumulates in the space portion. For example, the connecting member that connects the inner peripheral surface of the opening and the existing sash frame is not corroded by the accumulated water, the fixing performance of the housing and the existing sash frame is maintained, and iron rust is not generated. The mixed water oozes out It without fouling the building frame surface is prevented.

また、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躯体と上記既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。   In addition, since the inside of the space is filled with the resin hardened layer, the rigidity of the resin hardened layer reinforces the fixing state between the housing and the existing sash frame. Performance is enhanced.

さらに、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ようなことが未然に防止され、この結果、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。   Furthermore, when the foamable resin expands and expands in the space and sequentially diffuses into the space, the air in the space is gradually pushed forward in the expansion direction of the foamable resin, and a plurality of the air is formed. Since the resin is discharged from the resin injection hole to the outside, air is trapped in the foamable resin and becomes an air reservoir, which may remain as a cavity that causes rain leakage and condensation after the foamable resin is cured. As a result, for example, rainwater that has entered the space or water due to condensation is reliably prevented from entering the room through the cavity.

（ｄ）本願の第４の発明
本願の第４の発明では、上記（ｃ）に記載の効果に加えて以下のような特有の効果が得られる。即ち、この発明では、上記空間部への発泡性樹脂の注入作業を複数回に分けて行うものとし、上記樹脂注入孔を上記空間部の延設方向に所定間隔で複数個形成し、上記複数の樹脂注入孔のうち、任意の樹脂注入孔を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該空間部内に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。 (D) Fourth invention of the present application In the fourth invention of the present application, in addition to the effect described in the above (c), the following specific effects are obtained. That is, in the present invention, the foaming resin is injected into the space part in a plurality of times, and a plurality of the resin injection holes are formed at predetermined intervals in the extending direction of the space part. Among these resin injection holes, an arbitrary resin injection hole is used as the first resin injection hole, and the second resin injection hole, the third resin injection hole, the fourth resin injection hole are sequentially arranged from the side closer to the first resin injection hole. As the resin injection hole, a foamable resin is injected into the space from the first resin injection hole, and this expands and expands, and a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole. Then, the injection of the foamable resin is stopped, and then the foamable resin is injected into the space portion from the third resin injection hole to expand and expand, and the foaming in the process of foaming from the fourth resin injection hole. To the extent that part of the resin layer overflows The injection of the functional resin is stopped, and by repeating the stepwise injection of the foamable resin, the foamable resin is filled in the space portion and cured to form a cured resin layer in the space portion. The overflow resin portion that has overflowed and hardened from the resin injection hole is excised.

したがって、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る。   Therefore, in the space portion, the foamed resin layer that is injected later and expanded by foaming is sequentially laminated on the front side in the expansion direction of the foamed resin layer that has been injected and expanded, so that the air in the space portion is It is reliably prevented that the air pool is generated by being caught in the foamed resin layer, and that the air pool remains as a cavity that causes rain leakage or condensation in the cured resin layer after curing.

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、これにより上記既設サッシ枠と新設サッシ枠の固定性能が良好に維持されるとともに、発泡性樹脂の注入作業の容易化が促進され作業コストの低廉化が促進される。   In addition, when the foaming resin is injected, a part of the foamed resin layer overflowing from the other resin injection holes located on the front side in the expansion direction of the foam from the resin injection holes currently used for the injection operation overflows. It is possible to confirm that the foamable resin is sufficiently filled up to the other resin injection holes by visually observing that the foaming resin is insufficient or the foamable resin is foamed. Insufficient filling of foamable resin due to shortage, etc. is reliably prevented, so that the fixing performance of the existing sash frame and the new sash frame can be maintained well, and the foaming resin can be easily injected. Therefore, reduction in work cost is promoted.

（ｅ）本願の第５の発明
本願の第５の発明では、上記（ａ）、（ｂ）、（ｃ）又は（ｄ）に記載の効果に加えて以下のような特有の効果が得られる。即ち、この発明では、上記空間部への発泡性樹脂の注入に先立って、上記既設サッシ枠及び上記新設サッシ枠の適所に、水抜孔を適数個形成し、該水抜孔を通して上記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。 (E) Fifth invention of the present application In the fifth invention of the present application, in addition to the effects described in (a), (b), (c) or (d), the following specific effects are obtained. . That is, in the present invention, prior to the injection of the foamable resin into the space portion, an appropriate number of water drain holes are formed at appropriate positions in the existing sash frame and the new sash frame, and the water holes are inserted into the space portion through the water drain holes. The accumulated water is drained, and then the foamable resin is injected into the space to be cured by foaming. Therefore, the foaming expansion of the foamable resin is performed in the 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（水の蒸発後）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、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。   Here, since the foamable resin has a property of easily causing foaming failure or curing failure when touched with water, if water is accumulated in the space portion, the foamed resin is foamed in the portion where the water is accumulated. A void is generated due to poor foaming or curing of the conductive resin, and this remains as a cavity in the cured resin layer. Even if the foamable resin does not cause poor foaming or poor curing, since water is an incompressible fluid, if water accumulates in the space, it is injected into the space. Even if the foamable resin expands and expands, the water reservoir portion is not filled, and this portion remains as a cavity (after evaporation of water) in the cured resin layer in the space portion. The cavities remaining in these cured resin layers impair the mounting strength of the existing sash frame and the new sash frame, or rainwater or the like enters the cavity after the sash frame repair work is completed, and the surface of the housing is soiled. In the repair method of the present invention, since there is no water pool in the space portion as described above, the occurrence of such a situation is prevented in advance and a highly reliable sash is obtained. A frame can be obtained.

（ｆ）本願の第６の発明
本願の６の発明では、上記第１又は第２の発明に係るサッシ枠の補修方法によって補修されたサッシ枠の補修状態を検査する補修状態検査方法において、上記帯状開口から外方へ溢出して硬化した溢出樹脂部を切除することで形成される樹脂断面を観察することでサッシ枠の補修状態の良否を検査するようにしているので、上記空間部内の樹脂硬化層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、これによってサッシ枠の補修部分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。 (F) 6th invention of this application In 6th invention of this application, in the repair condition inspection method which inspects the repair condition of the sash frame repaired by the repair method of the sash frame which concerns on the said 1st or 2nd invention, The sash frame repair state of the sash frame is inspected by observing the cross section of the resin formed by cutting out the overflowed resin portion that has overflowed outward from the belt-shaped opening, and the resin in the space portion. It is possible to detect with a high probability the occurrence of poor curing caused by a relatively deep portion of the hardened layer or the occurrence of cavities due to air accumulation, and the inspection accuracy and reliability by visual inspection is improved. This also ensures the reliability of the repaired part of the sash frame, and if inspection results in poor curing or air pockets or cavities, measures such as reworking or partial repairs. Can be done quickly.

（ｇ）本願の第７の発明
本願の第７の発明では、上記第４の発明に係るサッシ枠の補修方法によって補修されたサッシ枠の補修状態を検査する補修状態検査方法において、上記樹脂注入孔から外部へ溢出して硬化した溢出樹脂部を切除することで形成される樹脂断面を観察することでサッシ枠の補修状態の良否を検査するようにしているので、上記空間部内の樹脂硬化層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、これによってサッシ枠の補修部分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。 (G) Seventh invention of the present application In the seventh invention of the present application, in the repair state inspection method for inspecting the repair state of the sash frame repaired by the sash frame repair method according to the fourth invention, the resin injection Since the sash frame is inspected for quality by observing the cross section of the resin formed by cutting out the overflowed resin portion that has overflowed and hardened from the hole, the cured resin layer in the space It is possible to detect the occurrence of a hardening defect occurring in a relatively deep part of the cavities and the generation of cavities due to air accumulation with high probability, and the inspection accuracy and reliability by visual inspection are improved. This also ensures the reliability of the repaired part of the sash frame, and if inspection results in poor curing or air pockets or cavities, measures such as reworking or partial repairs. Can be done quickly.

本願発明の第２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 2nd Embodiment of this invention. 図１のハ−ハ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。FIG. 2 is an enlarged cross-sectional view of FIG. 1 and shows a state before a resin injection operation. 図１のハ−ハ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。FIG. 2 is an enlarged cross-sectional view of FIG. 1 and shows a state after completion of a resin injection operation. 図３のニ−ニ矢視図である。FIG. 4 is a view taken from a knee arrow in FIG. 3. 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 newly installed sash frame inside the existing sash frame.

Ｂ：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。 B: Embodiment In FIG. 1, a sash frame portion to be repaired by applying a repair method according to an embodiment of the present invention, that is, a window or door attached from the beginning in an opening 2 provided in a housing 1. Inside the existing sash frame 3, 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 the “covering method” is shown.

Ｂ−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３ｂ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。 B-1: Specific Structures of Existing Sash Frame 3 and New Sash Frame 4 As shown in FIG. 2, the existing sash frame 3 is fitted into the opening 2 of the housing 1 and an appropriate fixture ( And is fixed to the housing 1 side. The existing sash frame 3 includes a pair of rectangular side walls 3a and 3a facing each other with a predetermined dimension, 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 displaced from the outer peripheral end of the side wall 3a toward the frame center by a predetermined dimension. In addition, the part corresponding to the lower surface of the said existing sash frame 3 among the said surrounding walls 3b is formed so that it may descent | fall downward from the indoor side toward 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３ｄ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。   When the existing sash frame 3 is fixed to the housing 1, the outer peripheral ends on the upper surface side and the left and right sides of the side wall 3 d of the existing sash frame 3 are the inner peripheral upper surface 2 a and the inner peripheral side surface of the opening 2, respectively. The outer peripheral end on the lower surface side is placed on the inner peripheral lower surface 2 b of the opening 2 via the frame mounting seat 5.

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。   Therefore, in this fixed state, a space portion 21 having a flat rectangular cross-sectional shape is formed between the inner peripheral upper surface 2 a and inner peripheral side surface 2 c of the opening 2 and the peripheral wall 3 b of the existing sash frame 3. . On the other hand, a space 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 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の内周形状よりも所定寸法だけ小さい寸法とされており、該新設サッシ枠４の室内側においてはその側壁４ａの外周縁と上記既設サッシ枠３の側壁の内周縁の間に所定幅の帯状開口１４が形成され、またその室外側においては該新設サッシ枠４の側壁４ａの外周縁と上記既設サッシ枠３の側壁３ａの内周縁の間に所定幅の帯状開口１５が形成されている。また、上記新設サッシ枠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の延設方向に連続し、且つ上記帯状開口１４及び帯状開口１５を介して外部に臨んで開口する空間部２２が形成されている。   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 the shape thereof is a predetermined dimension than the inner peripheral shape of the existing sash frame 3. A belt-like opening 14 having a predetermined width is formed between the outer peripheral edge of the side wall 4 a and the inner peripheral edge of the side wall of the existing sash frame 3 on the indoor side of the new sash frame 4. On the outer side, a belt-like opening 15 having a predetermined width is formed between the outer peripheral edge of the side wall 4a of the new sash frame 4 and the inner peripheral edge of the side wall 3a of the existing sash frame 3. Further, between the peripheral wall 4b of the new sash frame 4 and the peripheral wall 3b of the existing sash frame 3, the sash frames 3 and 4 are continuous in the extending direction, and the band-shaped opening 14 and the band-shaped opening 15 are interposed therebetween. Thus, a space 22 is formed to open to the outside.

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いる。また、上記帯状開口１４及び帯状開口１５は、それぞれ着脱可能なシーリング材７、８によって閉塞されている。   In addition, 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 at the lower side, in the same manner as the peripheral wall 3b of the existing sash frame 3. . Moreover, the said strip | belt-shaped opening 14 and the strip | belt-shaped opening 15 are obstruct | occluded by the sealing materials 7 and 8 which can be attached or detached, respectively.

また、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を所定長さのロッド体とその両端に溶接固定される一対の平板体６ａで構成し、該一対の平板体６ａを、それぞれ単体状態で、予め上記既設サッシ枠３の周壁３ｂと上記新設サッシ枠４の周壁４ｂに対してねじ止めにより固定しておく。そして、上記既設サッシ枠３の内側に上記新設サッシ枠４を嵌装した後、上記連結具６を上記帯状開口１４又は帯状開口１５から上記空間部２２内に差し入れて、その両端をそれぞれ上記平板体６ａに溶接してこれらを一体化することで、上記既設サッシ枠３に対して上記新設サッシ枠４が固定される。また、図６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。   Further, the existing sash frame 3 and the new sash frame 4 are fixed at a predetermined relative position by a plurality of connectors 6 provided at predetermined intervals (for example, about 400 mm) in the longitudinal direction (extending direction). ing. In this embodiment, the connector 6 is composed of a rod body having a predetermined length and a pair of flat plate bodies 6a that are welded and fixed to both ends thereof. The peripheral wall 3b of the existing sash frame 3 and the peripheral wall 4b of the new sash frame 4 are fixed with screws. Then, after fitting the new sash frame 4 inside the existing sash frame 3, the connector 6 is inserted into the space portion 22 from the belt-like opening 14 or the belt-like opening 15, and both ends thereof are respectively connected to the flat plate. The new sash frame 4 is fixed to the existing sash frame 3 by welding them to the body 6a and integrating them. Further, in FIG. 6, reference numeral 9 denotes a fitting that is attached to the inside of the new sash frame 4.

Ｂ−２：発泡性樹脂注入前の準備作業
Ｂ−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。 B-2: Preparatory work before injection of foamable resin B-2-1: Preparatory work for the existing sash frame 3 For the existing sash frame 3, an inner peripheral upper surface 2a of the opening 2 on the side of the housing 1 In the present embodiment, the draining operation of the water accumulated in the space portion 21 formed between and the operation of forming the resin injection hole 31 for injecting the resin into the space portion 21 is performed. When the resin injection hole 31 is formed in the side wall 3a of the existing sash frame 3, the resin injection hole 31 is also used as a drain hole by setting the formation position in the vertical direction to a position directly above the peripheral wall 3b. Therefore, there is no dedicated drain 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 portions excluding the bottom of the indoor side wall 3a extending in a rectangular frame shape over the entire circumference of the existing sash frame 3, Formed on the side surface of the frame mounting seat 5 arranged at the bottom of the existing sash frame 3 at predetermined intervals in the longitudinal direction (extension direction). Here, the size and shape of the resin injection hole 31 is preferably 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. The formation interval of the resin injection holes 31 is preferably 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 formed in this way, a plurality of resin injection holes 31 provided on the upper surface side of the existing sash frame 3 and a plurality of resin injection holes 31 provided in the frame mounting seat 5. However, it functions as a water drainage 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 space portion 21 is subsequently discharged into the space portion 21. In the resin injecting operation of the foamable resin, inconvenience due to the water accumulated in the space 21 is prevented in advance.

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 of easily causing foaming failure or curing failure when touched with water, if water is accumulated in the space portion 21, in the portion where the water is accumulated. A void is generated due to poor foaming or poor curing of the foamable resin, and this remains as a cavity in the cured resin layer. Further, even when the foamable resin does not cause poor foaming or poor curing, water is an incompressible fluid. Even if the foamable resin injected into the foam expands, the water reservoir portion is not filled, and this portion remains as a cavity (after water has evaporated) in the cured resin layer in the space. . The cavity remaining in the cured resin layer impairs the fixing strength of the existing sash frame 3 with respect to the opening 2, or rainwater or the like enters the cavity after the repair work of the sash frame is completed, and the surface of the housing However, these are all eliminated.

Ｂ−２−２：上記新設サッシ枠４に対する準備作業
一方、上記新設サッシ枠４においては、後述するように上記帯状開口１４を樹脂注入孔として利用することから、専用の樹脂注入孔は設けず、水抜孔３３のみが形成される。即ち、この実施形態では、図１、図２に示すように、上記水抜孔３３を上記新設サッシ枠４の上部縁のみに形成するものとし、その形成位置は室内側の側壁４ａにおける上記周壁４ｂの直上（直外）位置とし、その長手方向に所定間隔で複数個形成する。なお、この水抜孔３３は、上記既設サッシ枠３側の上記樹脂注入孔３１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く、またその形成間隔も５０〜２００mm程度とするのが望ましい。 B-2-2: Preparatory work for the new sash frame 4 On the other hand, in the new sash frame 4, the band-shaped opening 14 is used as a resin injection hole as will be described later, and therefore no dedicated resin injection hole is provided. Only the drainage hole 33 is formed. That is, in this embodiment, as shown in FIGS. 1 and 2, the drainage hole 33 is formed only in the upper edge of the new sash frame 4, and the formation position thereof is the peripheral wall 4b in the indoor side wall 4a. A plurality of positions are formed at predetermined intervals in the longitudinal direction. The drain hole 33 is preferably 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, like the resin injection hole 31 on the existing sash frame 3 side. The formation interval is preferably about 50 to 200 mm.

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、上記水抜孔３３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水抜孔３３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 portion 22 at the start of repair of the sash frame, the water accumulated on the upper side of the peripheral wall 4b of the new sash frame 4 is formed by the formation of the drain hole 33. It is quickly discharged to the outside through the drain hole 33. Further, water collected 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, in the same way as the drainage effect on the existing sash frame 3 side, the inconvenience due to the water accumulated in the space 22 is also eliminated on the new sash frame 4 side. Therefore, the cured resin layer 12 can be formed in an appropriate state in the space 22, and the fixed state between the existing sash frame 3 and the newly installed sash frame 4 is reinforced by the rigidity of the cured resin layer 12. The occurrence of contamination on the surface of the casing 1 is prevented in advance.

Ｂ−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。 B-3: Injecting operation of expandable resin When the above-described preparation operation is completed, the injecting operation of the expandable resin 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、上記帯状開口１４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。   The space portion 21 formed between the housing 1 and the existing sash frame 3 is injected with a foamable resin through the plurality of resin injection holes 31 provided in the existing sash frame 3. Injection of the foamable resin into the portion 21 is performed mainly for the purpose of preventing water from entering between the housing 1 and the existing sash frame 3 or reinforcing the existing sash frame 3 with respect to the housing 1. . In addition, a foaming resin is injected into the space 22 formed between the existing sash frame 3 and the new sash frame 4 through the band-shaped opening 14. The injection is mainly performed for the purpose of preventing water from entering between the existing sash frame 3 and the new sash frame 4 or reinforcing the fixed state of the existing sash frame 3 and the new sash frame 4.

Ｂ−３−１：上記空間部２１への発泡性樹脂の注入作業   B-3-1: Injection of foamable resin into the space 21

上記空間部２１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２１内に形成される樹脂硬化層１１内の空洞の残存防止等の観点から、上記空間部２１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、上記既設サッシ枠３の長手方向に所定間隔で複数個形成された樹脂注入孔３１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３１と仮称する。さらに、この一番目の樹脂注入孔３１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。   Although it is possible to complete the injection of the foamable resin into the space portion 21 in a single injection operation, in this embodiment, the cavity of the resin cured layer 11 formed in the space portion 21 is not affected. From the viewpoint of preventing the remaining, etc., the foamable resin is injected into the space portion 21 in a plurality of times by a predetermined amount. Here, for convenience of explanation, among the resin injection holes 31 formed in plural in the longitudinal direction of the existing sash frame 3 at a predetermined interval, the first resin injection hole for initially injecting any one of the resin injection holes 31 It is temporarily called 31. Further, the first resin injection hole 31 is 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 in one direction.

そして、先ず、一番目の樹脂注入孔３１から上記空間部２１内に注入ガン（図示省略）を差し入れて該空間部２１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２１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３１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３１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３１からの発泡性樹脂の注入作業を停止する。   First, an injection gun (not shown) is inserted into the space portion 21 from the first resin injection hole 31 to inject foamable resin into the space portion 21. The injected foamable resin diffuses and moves forward while foaming and expanding in the space 21, and when this reaches the second resin injection hole 31, a part of the foamed resin layer in the process of foaming becomes the second resin. It overflows from the injection hole 31 to the outside. When the overflow amount reaches a predetermined amount, the foaming resin injection operation from the first resin injection hole 31 is stopped.

次に、上記２番目の樹脂注入孔３１よりも一つ前方にある３番目の樹脂注入孔３１に注入ガンを差し入れて該空間部２１内に発泡性樹脂を注入し、４番目の樹脂注入孔３１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３１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２１内には、図７及び図８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１１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８に便宜的に符号を付したように、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。   Next, an injection gun is inserted into the third resin injection hole 31 which is one forward of the second resin injection hole 31 to inject a foamable resin into the space portion 21, and the fourth resin injection hole When a predetermined amount of the foamed resin layer that is in the process of foaming from 31 overflows a predetermined amount, the operation of injecting the foamable resin from the third resin injection hole 31 is stopped. By repeating the injection of the foamable resin in order, the cured resin layer 11 formed by curing the foamed and expanded foamable resin in the space 21 as shown in FIGS. 7 and 8. However, it will be formed in a multilayer shape in the foam expansion direction. That is, as shown in FIG. 8 for convenience, the first resin cured layer 11A, the second resin cured layer 11B, the third resin cured layer 11C,... .

なお、上記各樹脂注入孔３１から上記空間部２１内へ注入された発泡性樹脂の発泡膨張に伴って発泡途上の発泡樹脂層の一部が上記各樹脂注入孔３１から外部へ溢出して硬化し溢出樹脂部となるが、この溢出樹脂部は作業完了後に切除され、その切除面は後述するように固定状態の検査に利用される。   A part of the foamed resin layer in the process of foaming overflows from each resin injection hole 31 to the outside and hardens as the foamable resin injected into the space 21 from each resin injection hole 31 expands. The overflow resin portion is excised after completion of the work, and the excised surface is used for a fixed state inspection as will be described later.

以上のように、躯体１の開口部２とここに固定された上記既設サッシ枠３の間に形成された上記空間部２１内に発泡性樹脂を注入してこれを発泡膨張させて該空間部２１内に上記樹脂硬化層１１を形成するすることで、該空間部２１内が樹脂硬化層１１で満たされているため、該空間部２１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る。   As described above, the foamable resin is injected into the space portion 21 formed between the opening 2 of the housing 1 and the existing sash frame 3 fixed thereto, and this space is expanded and expanded. By forming the resin cured layer 11 in the space 21, the space 21 is filled with the resin cured layer 11, so that water such as rainwater enters the space 21 and accumulates therein. Is reliably prevented.

さらに、上記空間部２１内で発泡性樹脂が発泡膨張して該空間部２１内に順次拡散移動していく場合、該空間部２１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３１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２１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 expands and expands in the space portion 21 and sequentially diffuses and moves into the space portion 21, the air in the space portion 21 is gradually pushed forward in the expansion direction of the foamable resin. Since a plurality of the resin injection holes 31 are discharged to the outside, the air is entrained in the foamable resin and becomes an air reservoir, which remains as a cavity after the foamable resin is cured. Is prevented. As a result, for example, it is possible to reliably prevent rainwater that has entered the space 21 or water due to condensation from entering the room through the cavity.

一方、この実施形態では、上記空間部２１への発泡性樹脂の注入作業を、上記既設サッシ枠３に所定間隔で複数個設けられた上記樹脂注入孔３１を介して段階的に行うようにしているので、上記空間部２１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 foaming resin is injected into the space portion 21 stepwise through the resin injection holes 31 provided in the existing sash frame 3 at a predetermined interval. Therefore, in the space portion 21, 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 previously injected and expanded. The air is trapped in the foamable resin to generate an air pocket, and the air pool is more reliably prevented from remaining as a cavity in the cured resin layer 12.

なお、この実施形態では、上記新設サッシ枠３に設けられる樹脂注入孔３１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２１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２１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、既設サッシ枠３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３１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 31 provided in the new sash frame 3 is set in the range of 50 to 200 mm. However, if this interval becomes too large, When the foamable resin is foamed, the air in the space 21 loses the escape space and is compressed with the expansion change of the foamable resin, and an air pool with a high internal pressure is easily generated in the foamed resin layer. It is not preferable. On the other hand, if the distance is too small, the rigidity of the existing sash frame 3 may be impaired, and the strength performance may be lowered. From this point of view, the formation interval of the resin injection holes 31 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３１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３１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３１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、これにより上記躯体１と上記既設サッシ枠３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。   In addition, when the foaming resin is injected, a part of the foamed resin layer that is in the process of being foamed from another resin injection hole 31 that is located in front of the resin injection hole 31 that is currently used for the injection operation in the expansion direction of foaming. It is possible to confirm that the foamable resin is sufficiently filled up to the other resin injection hole 31 by visually observing that the resin overflows. Filling failure of the foamable resin due to insufficient foaming of the resin, etc. is surely prevented, so that the fixing strength of the casing 1 and the existing sash frame 3 is maintained well, and the foaming resin injection operation 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。   In addition, 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, A resin that can be cured while introducing bubbles such as nitrogen, LPG, or chlorofluorocarbon is preferred. In particular, a hard polyurethane resin which causes a chemical reaction by mixing two kinds of liquid resin raw materials and foams and cures is easy to handle and is more preferable because it has a high compressive strength after curing.

Ｂ−３−２：上記空間部２２への発泡性樹脂の注入作業
上記空間部２２への発泡性樹脂の注入作業は、上記帯状開口１４から上記空間部２２の内部へ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することで行われる。この場合、一度の注入作業によって該空間部２２の容積に対応した量の発泡性樹脂を一度に注入して作業を完了する手法を採用することも可能であるが、この実施形態では、上記空間部２２内に注入される発泡性樹脂への空気の巻き込みを防止するとともに、発泡性樹脂が硬化して得られる樹脂硬化層１２による上記空間部２２内への水の浸入防止効果をより一層確実にする等の観点から、注入作業を複数回（この実施形態では３回）に分けて段階的に行うようにしている。 B-3-2: Injection operation of foamable resin into the space portion 22 The injection operation of foamable resin into the space portion 22 is performed by inserting an injection gun into the space portion 22 through the band-shaped opening 14. This is performed by injecting a foamable resin into the space 22. In this case, it is possible to adopt a method of injecting an amount of foamable resin corresponding to the volume of the space portion 22 at a time by one injection operation to complete the operation. While preventing the entrainment of air into the foamable resin injected into the portion 22, the effect of preventing water from entering the space portion 22 by the cured resin layer 12 obtained by curing the foamable resin is further ensured. From such a viewpoint, the injection operation is divided into a plurality of times (in this embodiment, three times) and is performed stepwise.

先ず、図２に示すように、室外側の帯状開口１５を上記シーリング材８によって封止する一方、室内側の上記帯状開口１４は上記シーリング材７を取り外して開口させる。この状態において、上記帯状開口１４から上記空間部２２内の奥部に注入ガンを差し入れて、発泡性樹脂を、想定される発泡性樹脂の全使用量（上記空間部２２内を充填し且つその一部を上記帯状開口１４から外方に溢出させるに十分な発泡性樹脂の使用量）の略１／３程度の量だけ上記空間部２２内に注入し、これを発泡膨張させる。   First, as shown in FIG. 2, the strip-shaped opening 15 on the outdoor side is sealed with the sealing material 8, while the strip-shaped opening 14 on the indoor side is opened by removing the sealing material 7. In this state, an injection gun is inserted from the strip-shaped opening 14 into the inner part of the space portion 22, and the foamable resin is filled with the assumed amount of the foamable resin (filling the space portion 22 and its An amount of about 1/3 of the amount of the foamable resin sufficient to overflow a part from the belt-shaped opening 14 is injected into the space 22 and expanded and expanded.

この場合、上記空間部２２は、その室外側の帯状開口１５が上記シーリング材８によって封止され、室内側の帯状開口１４は外部に開放されていることから、上記空間部２２の奥部に注入された発泡性樹脂が発泡により膨張して該空間部２２の奥部に拡散移動して発泡樹脂層を形成する場合、該空間部２２内の空気は上記発泡性樹脂の発泡膨張に伴って、次第に開放されている上記帯状開口１４側へ移動される。この結果、空気が発泡途上にある発泡樹脂層内に巻き込まれてここに空気溜りを形成するということが確実に防止されるとともに、硬化した後の樹脂硬化層１２内に上記空気溜りに起因する空洞が形成されるのが防止される。この一回目の樹脂注入によって得られる樹脂硬化層１２が、図７において符号１２Ａで示すように上記空間部２２の奥部に形成された１層目の樹脂硬化層である。   In this case, in the space portion 22, the strip-shaped opening 15 on the outdoor side is sealed by the sealing material 8, and the strip-shaped opening 14 on the indoor side is open to the outside. When the injected foamable resin expands by foaming and diffuses and moves to the inner part of the space portion 22 to form a foamed resin layer, the air in the space portion 22 is expanded with the expansion of the foamable resin. Then, it is moved toward the band-shaped opening 14 which is gradually opened. As a result, it is reliably prevented that air is entrained in the foamed resin layer that is in the process of foaming and forms an air pocket here, and is also caused by the air pool in the cured resin layer 12 after being cured. The formation of cavities is prevented. The cured resin layer 12 obtained by this first resin injection is the first cured resin layer formed in the inner part of the space 22 as indicated by reference numeral 12A in FIG.

次に、１層目の樹脂硬化層１２Ａの上側（即ち、上記帯状開口１４寄り）に重ねて２層目の樹脂硬化層１２Ｂを形成する。即ち、１層目の樹脂硬化層１２Ａがある程度硬化した後、再度、上記帯状開口１４側から空間部２２内に注入ガンを差し入れて該空間部２２内に所要量（全使用量の略１／３程度の量）の発泡性樹脂を注入して、これを発泡膨張させる。   Next, a second cured resin layer 12B is formed so as to overlap the upper side of the first cured resin layer 12A (that is, close to the band-shaped opening 14). That is, after the first cured resin layer 12A is cured to some extent, an injection gun is again inserted into the space portion 22 from the side of the band-shaped opening 14, and the required amount (approximately 1 / of the total usage amount) is inserted into the space portion 22. A foamable resin in an amount of about 3) is injected and expanded.

この場合、新たに注入された発泡性樹脂は、１層目の樹脂硬化層１２Ａの表面に密着した状態で発泡を開始し、上記帯状開口１４側へ向けて膨張移動することで、１層目の樹脂硬化層１２Ａの表面上に新たな樹脂硬化層１２、即ち、２層目の樹脂硬化層１２Ｂを形成する（図３参照）。この２層目の樹脂硬化層１２Ｂの形成過程において、その周辺の空気は発泡性樹脂の発泡膨張に伴い、開放されている上記帯状開口１４側へ移動し、発泡膨張途上にある発泡樹脂層内に巻き込まれて空気溜りを形成することが確実に防止される。   In this case, the newly injected foamable resin starts to foam in a state of being in close contact with the surface of the first resin cured layer 12A, and expands and moves toward the band-shaped opening 14 side. A new cured resin layer 12, that is, a second cured resin layer 12B is formed on the surface of the cured resin layer 12A (see FIG. 3). In the process of forming the second cured resin layer 12B, the surrounding air moves to the open side of the band-shaped opening 14 with the expansion of the foamable resin, and the foamed resin layer is in the process of expanding the foam. It is reliably prevented from being caught in the air and forming an air pocket.

次に、２層目の樹脂硬化層１２Ｂの上側（即ち、上記帯状開口１４寄り）に重ねて３層目の樹脂硬化層１２Ｃを形成する。即ち、２層目の樹脂硬化層１２Ｂがある程度硬化した後、再度、上記帯状開口１４側から空間部２２内に注入ガンを差し入れて該空間部２２内に所要量（全使用量の略１／３程度の量）の発泡性樹脂を注入し、これを発泡膨張させるさせる。   Next, the third cured resin layer 12C is formed so as to overlap the upper side of the second cured resin layer 12B (that is, near the belt-shaped opening 14). That is, after the second cured resin layer 12B is cured to some extent, an injection gun is again inserted into the space portion 22 from the side of the band-shaped opening 14 and the required amount (approximately 1 / of the total usage amount) is inserted into the space portion 22. A foamable resin of an amount of about 3) is injected and foamed and expanded.

この場合、新たに注入された発泡性樹脂は、２層目の樹脂硬化層１２Ｂの表面に密着した状態で発泡を開始し、上記帯状開口１４側へ向けて膨張移動することで、２層目の樹脂硬化層１２Ｂの表面上に新たな樹脂硬化層１２、即ち、３層目の樹脂硬化層１２Ｃを形成する（図３参照）。この３層目の樹脂硬化層１２Ｃの形成過程において、その周辺の空気は発泡性樹脂の発泡膨張に伴い、開放されている上記帯状開口１４側へ移動し、発泡膨張途上にある発泡樹脂層内に巻き込まれて空気溜りを形成することが確実に防止される。   In this case, the newly injected foamable resin starts to foam in a state of being in close contact with the surface of the second resin cured layer 12B, and expands and moves toward the band-shaped opening 14 side. A new cured resin layer 12, that is, a third cured resin layer 12C is formed on the surface of the cured resin layer 12B (see FIG. 3). In the process of forming the third resin cured layer 12C, the surrounding air moves to the open band-shaped opening 14 side with the expansion of the foamable resin, and the inside of the foamed resin layer in the middle of the expansion of the foam It is reliably prevented from being caught in the air and forming an air pocket.

また、発泡性樹脂の発泡膨張の最終段階として、発泡途上にある発泡樹脂層の一部が上記帯状開口１４から外部へ溢出し、ここで硬化し溢出樹脂部１３となる。この溢出樹脂部１３を切除することで、図３に示すように、上記空間部２２内には相互に密着された三層のの樹脂硬化層１２Ａ，１２Ｂ，１２Ｃが形成されるものである。   Further, as the final stage of expansion of the foamable resin, a part of the foamed resin layer that is in the process of foaming overflows from the band-shaped opening 14 to the outside and is cured here to become the overflow resin portion 13. By cutting off the overflow resin portion 13, three layers of cured resin layers 12A, 12B, and 12C that are in close contact with each other are formed in the space portion 22, as shown in FIG.

以上のように、上記既設サッシ枠３と上記新設サッシ枠４の間に形成された上記空間部２２内に発泡性樹脂を注入してこれを発泡膨張させて該空間部２２内に上記樹脂硬化層１２を形成するすることで、該空間部２２内が樹脂硬化層１２で満たされているため、該空間部２２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る。   As described above, the foamable resin is injected into the space portion 22 formed between the existing sash frame 3 and the new sash frame 4, and the resin is cured by foaming and expanding the resin. By forming the layer 12, the space 22 is filled with the resin cured layer 12, so that it is reliably prevented that water such as rainwater enters and accumulates in the space 22. The

また、例えば、万一、上記樹脂硬化層１２を構成する多層状の各樹脂硬化層１２Ａ，１２Ｂ，１２Ｃの何れかに何らかの原因によって空気溜りとか硬化不良が生じたような場合であっても、これ以外の他の樹脂硬化層１２Ａ，１２Ｂ，１２Ｃが空気溜りとか硬化不良の無い正常な発泡樹脂層であれば、この正常な樹脂硬化層１２Ａ，１２Ｂ，１２Ｃによって上記空間部２２内への水の浸入が阻止されることから、信頼性の高いサッシ枠が得られる。   In addition, for example, even in the case where an air pocket or a curing failure occurs due to some cause in any of the multilayer resin cured layers 12A, 12B, 12C constituting the resin cured layer 12, If the other cured resin layers 12A, 12B, and 12C are normal foamed resin layers that do not retain air or cure poorly, the normal resin cured layers 12A, 12B, and 12C can cause water to enter the space 22. Therefore, a highly reliable sash frame can be obtained.

Ｂ−３−３：サッシ枠の補修状態の検査
上述のように、上記空間部２１への発泡性樹脂の注入作業の完了後、上記各樹脂注入孔３１から発泡樹脂層の一部が溢出し硬化して形成された溢出樹脂部を切除し、また上記空間部２２への発泡性樹脂の注入作業の完了後、上記発泡樹脂層の一部が帯状開口１４の略全域から外方へ溢出し硬化して形成された溢出樹脂部を切除するが、このように各溢出樹脂部をそれぞれ切除することで、上記空間部２１側の樹脂硬化層１１の樹脂断面、及び上記空間部２２側の樹脂硬化層１２の樹脂断面がそれぞれ外部に露出することになる。 B-3-3: Inspection of repaired state of sash frame As described above, after completion of the operation of injecting the foamable resin into the space portion 21, a part of the foamed resin layer overflows from each of the resin injection holes 31. The overflow resin portion formed by curing is excised, and after the operation of injecting the foamable resin into the space portion 22 is completed, a part of the foam resin layer overflows from substantially the entire area of the strip opening 14 to the outside. The overflow resin portion formed by curing is excised, and by thus excising each overflow resin portion, the resin cross section of the resin cured layer 11 on the space portion 21 side and the resin on the space portion 22 side are cut. The resin cross section of the hardened layer 12 is exposed to the outside.

したがって、これらの樹脂断面を観察することで、サッシ枠の補修状態の良否を検査することができる。即ち、上記各空間部２１、２２内の樹脂硬化層１１、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。   Therefore, the quality of the repaired state of the sash frame can be inspected by observing these resin cross sections. That is, it is possible to detect with high probability the occurrence of curing defects occurring in relatively deep portions of the resin cured layers 11 and 12 in the space portions 21 and 22 and the occurrence of cavities due to air pockets. Inspection accuracy and reliability are improved. This also ensures the reliability of the repair for the existing sash frame 3 and the new sash frame 4, and if inspection results in poor curing, air pockets or cavities, re-execution or partial repair. It is possible to quickly take countermeasures such as repairs.

なお、この実施形態では、上記樹脂注入孔３１の寸法は、樹脂注入孔３１が円形孔である場合には直径５〜３０mmに設定し、樹脂注入孔３１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３１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 dimension of the resin injection hole 31 is set to 5 to 30 mm in diameter when the resin injection hole 31 is a circular hole, and one side is 5 when the resin injection hole 31 is a rectangular hole. However, if the dimension of the resin injection hole 31 is made too small, the cross section of the resin when the overflow resin part is excised becomes small and observation becomes difficult. On the other hand, if the size is too large, the rigidity of the new sash frame 4 may be impaired, and the strength performance may be lowered.

本願発明に係るサッシ枠の補修方法及び補修状態検査方法は、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 sash frame repair method and repair state inspection method according to the present invention are used in a sash frame remodeling operation.

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
３３ ・・水抜孔 DESCRIPTION OF SYMBOLS 1 .... Housing 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 hardened layer 14 ·· Strip opening 15 ·· Strip opening 21 ·· Space portion 22 ·· Space portion 31 ·· Resin injection hole 33 ·· Water drain hole

Claims (7)

躯体の開口部に固定された既設サッシ枠の内側に、該既設サッシ枠の表裏両面の少なくとも何れか一方側においてその周縁との間に所定幅の帯状開口を形成した状態で新設サッシ枠を嵌装して固定するとともに該帯状開口をシーリング材によって封止してなるサッシ枠の補修方法であって、
上記シーリング材を取り外して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た空間部を上記帯状開口を介して外部に臨ませ、
しかる後、上記帯状開口から上記空間部内に発泡性樹脂を注入し、発泡樹脂層の一部を上記帯状開口の略全域から外方へ溢出させて硬化させた後、この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 new sash frame is fitted inside the existing sash frame fixed to the opening of the housing in a state where a belt-like opening having a predetermined width is formed between the peripheral edge of at least one of the front and back surfaces of the existing sash frame. A method for repairing a sash frame formed by sealing and fixing the belt-shaped opening with a sealing material,
The sealing material is removed and the space formed between the inner peripheral surface of the existing sash frame and the outer peripheral surface of the new sash frame is exposed to the outside through the band-shaped opening,
Thereafter, a foamable resin is injected into the space from the belt-shaped opening, and a part of the foamed resin layer is allowed to overflow outward from substantially the entire area of the belt-shaped opening to be cured, and then the overflow resin portion is removed. A method for repairing a sash frame characterized by that. 請求項１において、
上記空間部内に発泡性樹脂を注入して発泡させるに際し、樹脂注入作業を複数回に分けて行うものとし、
先の樹脂注入により形成された発泡樹脂層の上に、後の樹脂注入に係る発泡樹脂層を順次重ねて形成することで上記空間部の略全域に発泡性樹脂を充填し、最終の注入による発泡樹脂層の一部を上記帯状開口の略全域から外方へ溢出させて硬化させることで該空間部内に樹脂硬化層を形成するとともに、該帯状開口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。 In claim 1,
When injecting a foamable resin into the space and foaming, the resin injection operation is performed in a plurality of times,
By filling the foamed resin layer related to the subsequent resin injection on the foamed resin layer formed by the previous resin injection, the foamable resin is filled in almost the entire space, and the final injection is performed. A part of the foamed resin layer overflows from almost the entire area of the band-shaped opening and is cured to form a cured resin layer in the space, and the overflowed resin part that has overflowed and hardened from the band-shaped opening is cut off. A method for repairing a sash frame, characterized by: 請求項１又は２において、
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連通する樹脂注入孔を、上記既設サッシ枠又はその付属部材の側面に上記空間部の延設方向に所定間隔で複数個形成し、
しかる後、上記樹脂注入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ことで該空間部内に樹脂硬化層を形成することを特徴とするサッシ枠の補修方法。 In claim 1 or 2,
A resin injection hole that is formed between the inner peripheral surface of the opening of the housing and the outer peripheral surface of the existing sash frame that faces the opening and communicates with the space extending in the circumferential direction is provided with the existing sash frame or its accessory. A plurality of side surfaces of the member are formed at predetermined intervals in the extending direction of the space portion,
Thereafter, a sash frame repairing method is characterized in that a foamed resin is injected into the space through the resin injection hole and foamed and cured to form a cured resin layer in the space. 請求項３において、
上記空間部への発泡性樹脂の注入作業を複数回に分けて行うものとし、
上記樹脂注入孔を上記空間部の延設方向に所定間隔で複数個形成し、
上記複数の樹脂注入孔のうち、任意の樹脂注入孔を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該空間部内に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。 In claim 3,
The injection of foamable resin into the space is to be performed multiple times,
A plurality of the resin injection holes are formed at predetermined intervals in the extending direction of the space part,
Among the plurality of resin injection holes, an arbitrary resin injection hole is used as a first resin injection hole, and a second resin injection hole, a third resin injection hole, 4 from the side closer to the first resin injection hole, 4 The second resin injection hole,
The foamable resin is injected to the extent that the foamable resin is injected into the space from the first resin injection hole and expanded, and a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole. Stop the injection of
Next, a foamable resin is injected into the space from the third resin injection hole and expanded, and foaming is performed to such an extent that a part of the foamed resin layer overflowing from the fourth resin injection hole overflows. The injection of functional resin shall be stopped,
By repeating such stepwise injecting operation of the foamable resin, the space portion is filled with the foamable resin and cured to form a cured resin layer in the space portion, and overflowed from the resin injection hole and cured. A method for repairing a sash frame, characterized by cutting out the overflowed resin portion. 請求項１、２、３又は４において、
上記空間部への発泡性樹脂の注入に先立って、上記既設サッシ枠及び上記新設サッシ枠の適所に水抜孔を適数個形成し、該水抜孔を通して、上記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ことを特徴とするサッシ枠の補修方法。 In claim 1, 2, 3 or 4,
Prior to the injection of the foamable resin into the space, an appropriate number of water drainage holes are formed at appropriate positions in the existing sash frame and the new sash frame, and water accumulated in the space is drawn through the water drainage holes. Thereafter, a method for repairing a sash frame, comprising injecting a foamable resin into the space and foam-curing the resin. 請求項１又は２に記載のサッシ枠の補修方法によって補修されたサッシ枠の補修状態を検査する補修状態検査方法であって、
上記帯状開口から外方へ溢出して硬化した溢出樹脂部を切除することで形成される樹脂断面を観察することでサッシ枠の補修状態の良否を検査することを特徴とする補修状態検査方法。 A repair state inspection method for inspecting a repair state of a sash frame repaired by the sash frame repair method according to claim 1 or 2,
A repair state inspection method for inspecting the quality of a repair state of a sash frame by observing a cross section of a resin formed by cutting out an overflow resin portion that has overflowed outward from the belt-shaped opening and has been cured. 請求項４に記載のサッシ枠の補修方法によって補修されたサッシ枠の補修状態を検査する補修状態検査方法であって、
上記樹脂注入孔から外部へ溢出して硬化した溢出樹脂部を切除することで形成される樹脂断面を観察することでサッシ枠の補修状態の良否を検査することを特徴とする補修状態検査方法。
A repair state inspection method for inspecting a repair state of a sash frame repaired by the sash frame repair method according to claim 4,
A repair state inspection method for inspecting the quality of a repaired state of a sash frame by observing a cross section of a resin formed by cutting out an overflowed resin portion that has overflowed and cured from the resin injection hole.
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JPS5493826A (en) * 1977-12-30 1979-07-25 Meitaku Arukon Kk Window unit
JPS5592448A (en) * 1979-01-08 1980-07-12 Mitsui Toatsu Chemicals Heat insulation of wall
JPS5890976U (en) * 1981-12-16 1983-06-20 明拓アルコン株式会社 Installation device for new window frame on old window frame
JPH064293U (en) * 1992-06-19 1994-01-21 不二サッシ株式会社 Bottom frame watertight device for sliding window
JPH09250192A (en) * 1996-03-15 1997-09-22 Mitsuo Nakayama Double-bearing wall method of building
JPH1113160A (en) * 1997-06-19 1999-01-19 Nippon Light Metal Co Ltd Constructing method for and structure of heat-insulating wall
JP2004346539A (en) * 2003-05-20 2004-12-09 Sekisui Chem Co Ltd Sealing structure of building opening and manufacturing method therefor
JP2005264491A (en) * 2004-03-17 2005-09-29 Toyo Tire & Rubber Co Ltd Outside heat insulation method
JP2007030891A (en) * 2005-07-22 2007-02-08 Tokyo Koatsu Kk Tank having heat insulating structure, and method of manufacturing the same
JP2014005645A (en) * 2012-06-25 2014-01-16 Sankyotateyama Inc Sash

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5493826A (en) * 1977-12-30 1979-07-25 Meitaku Arukon Kk Window unit
JPS5592448A (en) * 1979-01-08 1980-07-12 Mitsui Toatsu Chemicals Heat insulation of wall
JPS5890976U (en) * 1981-12-16 1983-06-20 明拓アルコン株式会社 Installation device for new window frame on old window frame
JPH064293U (en) * 1992-06-19 1994-01-21 不二サッシ株式会社 Bottom frame watertight device for sliding window
JPH09250192A (en) * 1996-03-15 1997-09-22 Mitsuo Nakayama Double-bearing wall method of building
JPH1113160A (en) * 1997-06-19 1999-01-19 Nippon Light Metal Co Ltd Constructing method for and structure of heat-insulating wall
JP2004346539A (en) * 2003-05-20 2004-12-09 Sekisui Chem Co Ltd Sealing structure of building opening and manufacturing method therefor
JP2005264491A (en) * 2004-03-17 2005-09-29 Toyo Tire & Rubber Co Ltd Outside heat insulation method
JP2007030891A (en) * 2005-07-22 2007-02-08 Tokyo Koatsu Kk Tank having heat insulating structure, and method of manufacturing the same
JP2014005645A (en) * 2012-06-25 2014-01-16 Sankyotateyama Inc Sash

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