JP6713655B2 - Sash frame repair method and repair condition inspection method - Google Patents

Sash frame repair method and repair condition inspection method Download PDF

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JP6713655B2
JP6713655B2 JP2016163104A JP2016163104A JP6713655B2 JP 6713655 B2 JP6713655 B2 JP 6713655B2 JP 2016163104 A JP2016163104 A JP 2016163104A JP 2016163104 A JP2016163104 A JP 2016163104A JP 6713655 B2 JP6713655 B2 JP 6713655B2
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sash frame
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知成 饒平名
知成 饒平名
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株式会社Bac
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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 of repairing a sash frame such as a window or a door fixed to an opening of a frame, and a method of inspecting 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 reforming sash frames such as decrepit 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 classified 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 "covering 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 mounted. This is a method of fixing the gaps by welding or screwing via a connecting member. The other one is, for example, as disclosed in Patent Document 2, injecting a foamable resin into a space portion formed between an existing sash frame and a new sash frame to foam and cure the resin, and 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, 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”, since the existing sash frame 3 originally attached to the opening 2 provided in the body 1 is old, a new sash frame 3 is newly added inside the existing sash frame 3. The state is shown in which the new sash frame 4 is fitted and both are fixed via the connecting tool 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 larger than the outer peripheral surface 3b. Since it is also formed at a position retracted toward the center of the frame, a space portion 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 a lower edge thereof 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. The space 22 is in a state of being exposed to the outside through strip-shaped openings 14 and 15 that are opened on both front and back surfaces of the existing sash frame 3 and the new sash frame 4, respectively. Each is sealed by sealing materials 7 and 8.

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 two are integrated, as described above, the inside of the opening 2 of the frame 1 is Since the space 21 is formed between the peripheral surface 2a and the peripheral wall 3a of the existing sash frame 3, for example, in the case where the skeleton 1 is cracked due to deterioration of the skeleton 1, Water W such as rainwater may penetrate into the space 21 through the cracks and accumulate there. Then, if the water W accumulated in the space 21 is left, for example, an iron connector (not shown) arranged in the space 21 for fixing the existing sash frame 3 to the frame 1. Is corroded to impair the fixing strength of the existing sash frame 3, or water W contaminated by the mixing of iron rust may ooze to the front surface side of the skeleton 1 and stain 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 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, deterioration due to long-term use, construction failure, etc. Due to the above, water W such as rainwater may infiltrate into the space 22 through the gap between the sealing materials 7 and 8 and the existing sash frame 3 and the new sash frame 4, and may be accumulated there. If the water W accumulated in the space 22 is left as it is, the iron-made connecting tool 6 is corroded, the connection strength between the existing sash frame 3 and the new sash frame 4 is impaired, and iron rust is mixed. Then, there is a concern that the water W that has turned brown may seep out from the gaps between the sealing materials 7 and 8 and the existing sash frame 3 and the new sash frame 4 to 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、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。 The existing sash frame 3 and the new sash frame 4 are removed from the problems caused by the intrusion of rainwater into the spaces 21 and 22 due to the deterioration of the existing sash frame 3 and the new sash frame 4 as described above. In order to solve the problem without largely changing the structure, it is necessary to repair 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 the repair construction method, by injecting a foaming resin into each of the space portions 21 and 22 and curing the resin, and filling each space portion 21 and 22 with a resin cured layer, It is conceivable to prevent water from entering the spaces 21 and 22 and the generation 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 repairing method by injecting the foamable resin is applied to repairing the existing sash frame 3 and the new sash frame 4, all the above problems cannot be solved. That is, even if the foaming resin injection method is adopted, simply by injecting the foaming resin into each of the spaces 21 and 22 to cause the foaming resin to foam, the foaming resin is sufficiently distributed over the entire space of each of the spaces 21 and 22. However, air pockets are generated here and there, and the air pockets become voids after the foaming resin is cured and remain in the resin cured layer. If the voids remain in such a resin cured layer, there arises a problem that rainwater or dew condensation water that has entered the spaces 21 and 22 will enter the room through the voids. 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 present invention, by injecting a foaming resin into each space portion that occurs between the body, the existing sash frame and the new sash frame and filling each space portion with a foamed resin layer, In addition to preventing the formation of water pools, it is possible to reinforce the fixed state between the frame and the existing sash frame, and between the existing sash frame and the new sash frame, and to create cavities when filling the above space parts with foaming resin. The purpose of the invention is to propose a method for repairing a sash frame and a method for inspecting a repair state that can prevent the above problems.

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 band-shaped opening having a predetermined width is formed inside the existing sash frame fixed to the opening of the skeleton, at least on one side of both the front and back surfaces of the existing sash frame, and the periphery thereof. In a method of repairing a sash frame in which the newly installed sash frame is fitted and fixed and the band-shaped opening is sealed by a sealing material, the sealing material is removed to remove the inner peripheral surface of the existing sash frame and the new installation. The space portion formed between the outer peripheral surfaces of the sash frame is exposed to the outside through the strip-shaped opening, and thereafter, the foamable resin is injected into the space portion through the strip-shaped opening to partially cover the foamed resin layer. It is characterized in that the overflow resin portion is cut off after being overflowed and cured from substantially the entire area of the band-shaped opening.

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。 As the foamable resin, a urethane resin, an epoxy resin, an acrylic resin, an olefin resin, or the like, which can foam and cure a liquid resin raw material by a chemical reaction, or a liquid resin raw material, A resin that can be cured by introducing a gas such as nitrogen, LPG, or CFC to form bubbles and is preferable. In particular, a hard 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 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 method for repairing a sash frame according to the first invention, when injecting a foamable resin into the space to foam the resin, the resin injecting operation is performed in plural times. By filling the foamed resin layer formed by the previous resin injection with the foamed resin layer related to the subsequent resin injection in order, the foamable resin is filled in substantially the entire space, and the final injection is performed. A resin cured layer is formed in the space by causing a part of the foamed resin layer to overflow outward from substantially the entire area of the strip-shaped opening and cured, and the overflow resin portion that has overflowed from the strip-shaped opening and hardened is cut off. 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。 In a third invention of the present application, in the method of repairing a sash frame according to the first or second invention, 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 of the opening. A plurality of resin injection holes that are formed and communicate with the space portion that extends in the circumferential direction are formed on the side surface of the existing sash frame or its accessory member at predetermined intervals in the extending direction of the space portion, and then the resin It is characterized in that a resin cured layer is formed in the space by injecting a foaming resin into the space through 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。 In a fourth invention of the present application, in the method of repairing a sash frame according to the third invention, the work of injecting the foamable resin into the space portion is performed in a plurality of times, and the resin injection hole is provided in the space. A plurality of resin injection holes are formed at predetermined intervals in the extending direction of the portion, and an arbitrary resin injection hole of the plurality of resin injection holes is defined as the first resin injection hole, and the resin injection holes are sequentially arranged from the side closer to the first resin injection hole. The third resin injection hole, the third resin injection hole, and the fourth resin injection hole are used. From the first resin injection hole, a foaming resin is injected into the space portion to expand and expand the resin, and then the second resin injection hole. The injection of the foamable resin is stopped to the 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 through the third resin injection hole and foamed. It is assumed that the expansion is stopped and the injection of the foaming resin is stopped to the extent that a part of the foaming resin layer in the process of foaming overflows from the fourth resin injection hole, and the stepwise injection operation of the foaming resin is repeated. Then, the space portion is filled with a foaming resin and cured to form a resin cured layer in the space portion, and the overflow resin portion that has overflowed from the resin injection hole and hardened 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 method of repairing a sash frame according to the first, second, third or fourth invention, the existing sash frame and the existing sash frame are injected prior to the injection of the foamable resin into the space. Forming an appropriate number of water draining holes at appropriate places of the new sash frame, draining water accumulated in the space through the water draining holes, and then injecting a foaming resin into the space to foam and cure the resin. 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 a sixth invention of the present application, in a repair state inspection method for inspecting a repair state of a sash frame repaired by the sash frame repair method according to the first or second invention, overflowing outward from the band-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 off the overflow resin portion that has hardened.

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 a seventh invention of the present application, in a repair state inspection method for inspecting a repair state of the sash frame repaired by the sash frame repair method according to the fourth invention, the resin is injected into the resin injection hole and cured. 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 off the overflow resin portion.

(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) First invention of the present application In the first invention of the present application, the inside of the existing sash frame fixed to the opening of the skeleton, and at least one of the front and back surfaces of the existing sash frame with the peripheral edge thereof. In a method of repairing a sash frame in which a new sash frame is fitted and fixed with a band-shaped opening having a predetermined width formed therebetween and the band-shaped opening is sealed with a sealing material, the sealing material is removed and the existing The space portion 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 strip-shaped opening, and then a foaming resin is injected into the space portion from the strip-shaped opening. However, since a part of the foamed resin layer is overflowed from almost the entire area of the band-shaped opening to be cured and then the overflowed resin portion is cut off, the space portion is filled with the resin cured layer. Therefore, it is surely prevented that water such as rainwater will infiltrate into the space and accumulate there, and for example, that the connector for connecting the existing sash frame and the new sash frame is corroded by the accumulated water. As a result, the fixing strength of the existing sash frame and the new sash frame is maintained, and water containing iron rust does not seep out to the outside to prevent stains on the surface of the skeleton and maintain its aesthetic appearance.

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。 Further, since the space is filled with the resin hardened layer, the rigidity of the resin hardened layer reinforces the fixed state between the existing sash frame and the new sash frame, and the sash frame as a whole is correspondingly reinforced. Fixed 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。 Further, when the foamable resin expands and expands in the space, the air in the space is discharged to the outside through the band-shaped opening as the expansion of the foam expands, and is entrapped in the foamed resin layer. Is prevented. Therefore, the occurrence of air pockets in the foamed resin layer in the space, it is reliably prevented that due to the air pools the occurrence of cavities that cause rain leakage or condensation in the resin cured layer, As a result, for example, it is possible to reliably prevent rainwater that has entered the space or water due to condensation 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。 Further, in the sash frame after the repair, since the overflow resin portion overflowing from the strip-shaped opening is cut off, the aesthetic appearance around the sash frame is 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, the following unique effect is obtained in addition to the effect described in (a) above. That is, in the present invention, when injecting the foamable resin into the space to foam the resin, the resin injection work is performed in a plurality of times, and the resin is injected on the foamed resin layer formed by the previous resin injection. The foamed resin layer related to the resin injection is sequentially stacked so that the foamable resin is filled substantially in the entire space, and a part of the foamed resin layer obtained by the final injection is outward from the substantially entire area of the strip-shaped opening. The resin cured layer is formed in the space by overflowing the resin into the space and the cured resin overflowing from the band-shaped opening is cut off, so that the foamed resin layer is formed in the space. It will be formed in a multi-layered manner in the thickness direction of the space portion, and even if any of these multi-layered foamed resin layers has an air pocket or a curing failure, other foamed resin layers other than this will be formed. In the case of a normal foamed resin layer having no air pocket or curing failure, the normal foamed resin layer ensures the sealing property of the fixed portion of the sash frame, and a highly reliable sash frame free from rain leakage or dew condensation can be 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 overflow resin portion that has overflowed from the strip-shaped opening and hardened in the final resin injection is cut off, the aesthetic appearance of the strip-shaped opening portion is maintained, and When the strip-shaped openings are sealed with a sealing material, the sealing property of these strip-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 unique effects are obtained. That is, in the present invention, the resin injection hole communicating between the inner peripheral surface of the opening portion of the skeleton and the outer peripheral surface of the existing sash frame facing the inner peripheral surface and communicating with the space portion extending in the circumferential direction, A plurality of side walls of an existing sash frame or its attached member are formed at predetermined intervals in the extending direction of the space, and then a foaming resin is injected into the space through the resin injection hole to foam and cure the resin. By doing so, the resin cured layer is formed in the space portion, so it is possible to reliably prevent the space portion from being filled with the resin cured layer and water such as rainwater entering the space portion and accumulating therein. For example, the inner peripheral surface of the opening is not corroded by the accumulated water for the connecting tool that connects the existing sash frame, the fixing performance of the skeleton and the existing sash frame is maintained, and iron rust is generated. The mixed water does not exude to the outside, and the body surface is prevented from being soiled.

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。 Further, since the space portion is filled with the resin hardened layer, the rigidity of the resin hardened layer reinforces the fixed state between the body and the existing sash frame, and accordingly the entire sash frame is fixed. Performance is improved.

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 toward the front side in the expansion direction of the foamable resin to form a plurality. Since the air is discharged from the resin injection hole to the outside, air is trapped in the foamable resin and becomes an air pool, which remains as a cavity that causes rain leakage and dew condensation after the foaming resin is cured. As a result, for example, rainwater that has entered the space or water due to dew 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 effects described in (c) above, the following unique effects are obtained. That is, in the present invention, the work of injecting the foamable resin into the space is divided into a plurality of times, and a plurality of the resin injection holes are formed at a predetermined interval in the extending direction of the space. Of the resin injection holes, the first resin injection hole is defined 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 side closer to the first resin injection hole. As a resin injection hole, a foaming resin is injected from the first resin injection hole into the space to expand and expand the resin, and a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole. The injection of the foamable resin is stopped at a certain degree, and then the foamable resin is injected into the space portion through the third resin injection hole to expand and expand the foamed resin, and the foaming resin which is in the process of foaming through the fourth resin injection hole. It is assumed that the injection of the foamable resin is stopped until a part of the resin layer overflows, and the stepwise injection operation of the foamable resin is repeated to fill the foamable resin in the space and cure it. A resin cured layer is formed in the space, and the overflow resin portion which has overflowed from the resin injection hole and hardened is cut off.

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, since the foamed resin layer that is injected and foamed and expanded later is sequentially stacked on the front side in the expansion direction of the foamed resin layer that is injected and foamed and expanded first, the air in the space portion is It is reliably prevented that the air pocket is generated by being caught in the foamed resin layer and that the air pocket remains after curing as a cavity that causes rain leakage and dew condensation in the resin cured layer.

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 injecting the foamable resin, part of the foaming resin layer that is in the process of foaming overflows from another resin injection hole that is located forward of the resin injection hole that is currently used for the injection operation in the foam expansion direction. By visually observing that, it is possible to confirm that the foamable resin is sufficiently filled up to the portion of the other resin injection hole, and therefore, the injection amount of the foamable resin is insufficient or the foamable resin is foamed. Poor filling of the foamable resin due to lack etc. is reliably prevented, and the fixing performance of the existing sash frame and the new sash frame is maintained well, and the injection work of the foamable resin is facilitated. The work cost is reduced.

(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 the above (a), (b), (c) or (d), the following unique 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 drainage holes are formed at appropriate places of the existing sash frame and the new sash frame, and the water drainage holes are formed into the space portion. The accumulated water is drained, and after that, the foaming resin is injected into the space portion to foam and cure it, so that the foaming expansion of the foaming resin is performed in the space portion without the 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 it comes into contact with water, if water is accumulated in the space portion, foaming occurs in the water accumulated portion. A void is created due to poor foaming or poor curing of the resin, and this remains as a void in the cured resin layer. Further, even when the foamable resin does not cause foaming failure or curing failure, since water is an incompressible fluid, if water is accumulated in the space, it is injected into the space. Even if the foamable resin expands and expands, the water pool portion is not filled, and this portion remains as a cavity (after evaporation of water) in the resin cured layer in the space. The cavities remaining in these cured resin layers impair the attachment strength of the existing sash frame and the new sash frame, or rainwater infiltrates into the cavities after the completion of the repair work of the sash frame to contaminate 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, occurrence of such a situation is prevented in advance, and the sash with high reliability is provided. You can get a frame.

(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) Sixth invention of the present application 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 is checked for quality by observing the cross section of the resin formed by cutting out the resin portion that has overflowed and cured from the band-shaped opening. It is possible to detect, with a high probability, defective curing that occurs in a relatively deep portion of the cured layer or the occurrence of voids due to air pockets, and the inspection accuracy and reliability by visual inspection are improved. In addition, this ensures the reliability of the repaired part of the sash frame, and if hardening defects, air pockets, or cavities are found by inspection, it is necessary to re-execute the construction or take appropriate measures such as partial repairs. Can be taken 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 is performed. Since the quality of the repaired state of the sash frame is inspected by observing the cross section of the resin formed by cutting off the resin portion that has overflowed and hardened from the hole, the resin cured layer in the space It is possible to detect, with a high probability, a curing failure that occurs in a relatively deep portion of the above, or the occurrence of a cavity due to an air pocket, and the inspection accuracy and reliability by visual inspection are improved. In addition, this ensures the reliability of the repaired part of the sash frame, and if hardening defects, air pockets, or cavities are found by inspection, it is necessary to re-execute the construction or take appropriate measures such as partial repairs. Can be taken 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 the 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. 3 is an enlarged cross-sectional view of the harness shown in FIG. 1, showing a state before the resin injection work. 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. 3 is an enlarged cross-sectional view of the harness shown in FIG. 1, showing a state after completion of the resin injection work. 図3のニ−ニ矢視図である。FIG. 4 is a view taken in the direction of arrow Ni of 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 new 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 FIG. 1 shows a sash frame portion to be repaired by applying a repairing method according to an embodiment of the present invention, that is, a window or a door originally installed in an opening 2 provided in a skeleton 1. Inside the existing sash frame 3, the sash frame portion formed by fitting and fixing the new sash frame 4 having a smaller shape than 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 Structure of Existing Sash Frame 3 and New Sash Frame 4 The existing sash frame 3 is fitted into the opening 2 of the skeleton 1 as shown in FIG. It is fixed to the body 1 side by (not shown). The existing sash frame 3 includes a pair of rectangular frame-shaped side walls 3a and 3a opposed to each other with a predetermined dimension therebetween, 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 by a predetermined dimension toward the center of the frame. A portion of the peripheral wall 3b corresponding to the lower surface of the existing sash frame 3 is formed so as to be inclined 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。 Then, in the fixed state of the existing sash frame 3 to the body 1, the upper surface side and the left and right outer peripheral ends of the side wall 3d of the existing sash frame 3 are the inner peripheral upper surface 2a and the inner peripheral side surface of the opening 2, respectively. The outer peripheral edge on the lower surface side is placed on the inner peripheral lower surface 2b of the opening 2 through the frame mounting seat 5, although it abuts or closely faces 2c.

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 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 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 its shape is a predetermined dimension larger than the inner peripheral shape of the existing sash frame 3. On the indoor side of the new sash frame 4, a band-shaped opening 14 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 of the existing sash frame 3. On the outer side, a band-shaped 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. In addition, 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 belt-shaped opening 14 and the belt-shaped opening 15 are interposed. A space 22 is formed so as to face the outside and open.

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。 The peripheral wall 4b of the new sash frame 4 is inclined downward from the indoor side toward the outdoor side in consideration of drainage, like the peripheral wall 3b of the existing sash frame 3 on the lower side thereof. .. The strip-shaped opening 14 and the strip-shaped opening 15 are closed by removable sealing materials 7 and 8, 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 connecting tools 6 provided at predetermined intervals (for example, about 400 mm) in the longitudinal direction (extending direction) thereof. ing. In this embodiment, the connecting member 6 is composed of a rod body having a predetermined length and a pair of flat plate bodies 6a welded and fixed to both ends of the rod body. The peripheral wall 3b of the existing sash frame 3 and the peripheral wall 4b of the new sash frame 4 are fixed by screws. Then, after the new sash frame 4 is fitted inside the existing sash frame 3, the connector 6 is inserted into the space 22 through the band-shaped opening 14 or the band-shaped 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 the body 6a and integrating them. Further, in FIG. 6, reference numeral 9 is a fitting 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 injecting the foamable resin B-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 side of the skeleton 1 and The work of draining the water accumulated in the space 21 formed between the space 21 and the work of forming the resin injection hole 31 for injecting the resin into the space 21 are performed, but in this embodiment, When the resin injection hole 31 is formed on the side wall 3a of the existing sash frame 3, the resin injection hole 31 is also used as a drainage hole by setting the vertical forming position thereof 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 FIG. 1 and FIG. 2, the resin injection hole 31 includes three portions of the side wall 3a on the indoor side extending over the entire circumference of the existing sash frame 3 in a rectangular frame shape, excluding its bottom portion, and The frame mounting seats 5 arranged on the bottom of the existing sash frame 3 are formed on the side surfaces at predetermined intervals in the longitudinal direction (extending direction) thereof. Here, it is preferable that the resin injection hole 31 has a circular shape with a diameter of about 5 to 30 mm or a rectangular hole with one side of about 5 to 30 mm. It is desirable that the resin injection holes 31 are formed at intervals of 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 on the frame mounting seat 5 are provided. However, it functions as a water drain hole, and the water accumulated in the space 21 and the water accumulated in the frame mounting seat 5 are quickly discharged, whereby the space 21 is discharged into the space 21 later. In the process of injecting the foamable resin, the inconvenience caused by the water accumulated in the space 21 is 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 of easily causing foaming failure or curing failure when it comes into contact with water, if water is stored in the space portion 21, if the water is stored in the space portion 21, A void is generated due to defective foaming or insufficient curing of the foamable resin, and the void remains in the cured resin layer as a void. Even when the foamable resin does not cause foaming failure or curing failure, since water is an incompressible fluid, if water is stored in the space portion 21, the space portion 21 Even if the foamable resin injected inside expands and expands, this water pool part is not filled, and this part remains as a cavity (after water has evaporated) in the resin cured layer in the space part. .. Cavities remaining in these resin cured layers impair the fixing strength of the existing sash frame 3 to the opening 2, or rainwater or the like penetrates into the cavities after the repair work of the sash frame is completed, and the surface of the body is damaged. 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: Preparation work for the new sash frame 4 On the other hand, in the new sash frame 4, since the strip-shaped opening 14 is used as a resin injection hole as described later, a dedicated resin injection hole is not provided. , Only the drain hole 33 is formed. That is, in this embodiment, as shown in FIGS. 1 and 2, the drain hole 33 is formed only on the upper edge of the new sash frame 4, and the formation position thereof is the peripheral wall 4b of the side wall 4a on the indoor side. A plurality of them are formed at a predetermined interval in the longitudinal direction thereof at a position immediately above (directly outside). The drain hole 33 is preferably a circular hole having a diameter of about 5 to 30 mm or a rectangular hole having one side of about 5 to 30 mm, like the resin injection hole 31 on the side of the existing sash frame 3, Further, it is desirable that the formation interval be 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 is accumulated in the space 22 at the start of repairing 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 water drain hole 33. It is quickly discharged to the outside through the drainage hole 33. Further, 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 side of the existing sash frame 3, on the side of the new sash frame 4 as well, the inconvenience caused by the water accumulated in the space 22 is eliminated. 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. Therefore, the occurrence of stain on the surface of the body 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 Work of Foaming Resin When the above-described preparation work is completed, the injecting work of foaming 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。 In the space portion 21 formed between the frame 1 and the existing sash frame 3, the work of injecting the foamable resin is performed through the plurality of resin injection holes 31 provided in the existing sash frame 3. The foaming resin is injected into the portion 21 mainly for the purpose of preventing water from entering between the frame 1 and the existing sash frame 3 and reinforcing the fixed state of the existing sash frame 3 with respect to the frame 1. .. In addition, in the space portion 22 formed between the existing sash frame 3 and the new sash frame 4, the work of injecting the foamable resin is performed through the strip-shaped opening 14, and the foamable resin in the space portion 22 is injected. Is injected mainly 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: Injecting the 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 21 by a single injection operation, in this embodiment, the voids in the resin cured layer 11 formed in the space 21 are formed. From the viewpoint of prevention of remaining, the injection of the foaming resin into the space portion 21 is performed in a predetermined amount divided into a plurality of times. Here, for convenience of explanation, a first resin injection hole for first performing resin injection of any one of a plurality of resin injection holes 31 formed at predetermined intervals in the longitudinal direction of the existing sash frame 3. It is tentatively called 31. Further, they are tentatively referred to as a second resin injection hole, a third resin injection hole, and a fourth resin injection hole in the order of decreasing distance from the first resin injection hole 31 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。 Then, first, an injection gun (not shown) is inserted into the space 21 through the first resin injection hole 31 to inject the foamable resin into the space 21. The injected foamable resin diffuses and moves forward while foaming and expanding in the space 21, and when it reaches the second resin injection hole 31, a part of the foamed resin layer that is in the process of foaming is blown by the second resin. It overflows from the injection hole 31 to the outside. When the overflow amount reaches a predetermined amount, the work of injecting the foamable resin 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 located one front of the second resin injection hole 31 to inject the foamable resin into the space 21 and the fourth resin injection hole 31. When a part of the foamed resin layer that is in the process of foaming overflows from 31 by a predetermined amount, the work of injecting the foamable resin from the third resin injection hole 31 is stopped. By sequentially repeating such an operation of injecting the foamable resin, as shown in FIGS. 7 and 8, in the space portion 21, the resin cured layer 11 formed by curing the foamed resin which has been expanded and expanded. However, it is formed in a multi-layered shape in the foam expansion direction. That is, as indicated by the reference numerals 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。 In addition, a part of the foamed resin layer that is in the process of foaming overflows from the resin injection holes 31 to the outside as the foamable resin injected from the resin injection holes 31 into the space 21 expands and is cured. The overflow resin portion is cut out after the work is completed, and the cut surface is used for the inspection of the fixed state as 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 foaming resin is injected into the space portion 21 formed between the opening 2 of the frame 1 and the existing sash frame 3 fixed here, and the foaming resin is expanded to expand the space portion. By forming the resin hardened layer 11 in the space 21, the space 21 is filled with the resin hardened layer 11, so that water such as rainwater enters the space 21 and collects 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 21 and sequentially diffuses and moves into the space 21, the air in the space 21 is gradually pushed forward in the expansion direction of the foamable resin. Since it is burned and discharged from the resin injection hole 31 formed in plural numbers, air is trapped in the foamable resin to form an air pocket, which remains as a cavity after the foamable resin is cured. To be prevented. As a result, for example, rainwater that has entered the space 21 or water due to dew condensation can be reliably prevented 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 work of injecting the foamable resin into the space 21 is performed stepwise through the resin injection holes 31 provided in the existing sash frame 3 at a predetermined interval. Therefore, in the space portion 21, since the foamed resin layer that is injected and foamed and expanded later is sequentially stacked on the front side in the expansion direction of the foamed resin layer that is injected and foamed and expanded, the interior of the space portion 21 It is possible to more reliably prevent the air of (1) from being entrapped in the foamable resin to form an air pool, and the air pool remaining as a void 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 addition, in this embodiment, the formation interval of the resin injection holes 31 provided in the new sash frame 3 is set to a range of 50 to 200 mm. When the foamable resin is foamed, the air in the space 21 loses its escape area and is compressed due to the expansion change of the foamable resin, and an air pool having a high internal pressure is likely to be generated in the foamed resin layer. Not preferable. On the other hand, if the gap is too narrow, the rigidity of the existing sash frame 3 may be impaired and its strength performance may be deteriorated, which is not preferable. From this point of view, the interval between 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, during the injection work of the foamable resin, a part of the foamed resin layer which is in the process of foaming from another resin injection hole 31 located on the front side in the foaming expansion direction with respect to the resin injection hole 31 currently used for the injection work. By visually observing that the foaming resin overflows, it is possible to confirm that the foamable resin has been sufficiently filled up to the portion of the other resin injection hole 31. Poor filling of the expandable resin due to insufficient foaming of the resin is surely prevented, and thereby the fixing strength of the body 1 and the existing sash frame 3 is maintained well, and the work of injecting the expandable resin is performed. It will be easier and the work cost will be reduced.

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。 As the foamable resin, a urethane resin, an epoxy resin, an acrylic resin, an olefin resin, or the like, which can foam and cure a liquid resin raw material by a chemical reaction, or a liquid resin raw material, A resin that can be cured by introducing a gas such as nitrogen, LPG, or CFC to form bubbles and is preferable. In particular, a hard 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 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: Injecting the foamable resin into the space 22 The injection of the foamable resin into the space 22 is performed by inserting an injection gun into the space 22 from the band-shaped opening 14. It is performed by injecting a foaming resin into the space 22. In this case, it is also possible to adopt a method of injecting a quantity of the foaming resin corresponding to the volume of the space portion 22 at a time by one injection operation to complete the operation. In addition to preventing air from being entrained in the foaming resin injected into the portion 22, the resin cured layer 12 obtained by curing the foaming resin is more surely effective in preventing water from entering the space 22. From the viewpoint of, for example, the injection work is divided into a plurality of times (three times in this embodiment) and performed in stages.

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 band-shaped opening 15 on the outdoor side is sealed by the sealing material 8, while the band-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 band-shaped opening 14 into the interior of the space 22 to fill the foamable resin with the total amount of the foamable resin that is supposed to be used (fill the space 22 and An amount of about 1/3 of the amount of the foamable resin used to overflow a part of the band-shaped opening 14 to the outside is injected into the space portion 22 to expand and expand it.

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 opened to the outside, so that the space portion 22 is provided at the inner portion of the space portion 22. When the injected foamable resin expands due to foaming and diffuses and moves to the inner portion of the space portion 22 to form a foamed resin layer, the air in the space portion 22 is accompanied by the foaming expansion of the foamable resin. , And is gradually moved to the side of the strip-shaped opening 14 that is open. As a result, it is surely prevented that air is entrapped in the foamed resin layer which is in the process of foaming to form an air pool therein, and the air pool causes the air pool in the cured resin layer 12 after curing. The formation of cavities is prevented. The resin cured layer 12 obtained by the first resin injection is the first resin cured layer formed in the inner part of the space 22 as indicated by reference numeral 12A in FIG. 7.

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, the second resin cured layer 12B is formed on the upper side of the first resin cured layer 12A (that is, near the band-shaped opening 14). That is, after the first cured resin layer 12A has been cured to some extent, the injection gun is again inserted into the space 22 from the side of the band-shaped opening 14 to fill the space 22 with a required amount (about 1/of the total amount used). A foamable resin in an amount of about 3) is injected and this is foamed 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 foaming in a state of being in close contact with the surface of the first resin cured layer 12A, and expands and moves toward the side of the belt-shaped opening 14 to thereby expand the first layer. A new resin cured layer 12, that is, a second resin cured layer 12B is formed on the surface of the resin cured layer 12A (see FIG. 3). In the process of forming the second resin cured layer 12B, the air around it moves to the open side of the band-shaped opening 14 as the foamable resin expands, and the inside of the foamed resin layer that is in the process of foaming expansion. It is reliably prevented that the air is trapped in and forms 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 resin cured layer 12C of the third layer is formed on the upper side of the resin cured layer 12B of the second layer (that is, near the band-shaped opening 14). That is, after the second cured resin layer 12B has been cured to some extent, the injection gun is again inserted into the space 22 from the side of the band-shaped opening 14 and the required amount (approximately 1/100% of the total amount used) is filled in the space 22. An amount of about 3) of the foaming resin is injected and this is expanded 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 foaming in a state of being in close contact with the surface of the second resin cured layer 12B, and expands and moves toward the side of the belt-shaped opening 14 to form the second layer. A new resin cured layer 12, that is, a third resin cured layer 12C is formed on the surface of the resin cured layer 12B (see FIG. 3). In the process of forming the third resin cured layer 12C, the air around it moves to the open side of the band-shaped opening 14 as the foaming resin expands, and the inside of the foamed resin layer that is in the process of foaming expansion. It is reliably prevented that the air is trapped in and forms 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。 At the final stage of foam expansion of the expandable resin, a part of the foam resin layer in the process of foaming overflows from the band-shaped opening 14 to the outside, where it is cured to become the overflow resin portion 13. By cutting off the overflow resin portion 13, as shown in FIG. 3, three resin cured layers 12A, 12B, 12C that are in close contact with each other are formed in the space portion 22.

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 foaming resin is injected into the space portion 22 formed between the existing sash frame 3 and the new sash frame 4 to expand and expand the resin to cure the resin in the space portion 22. By forming the layer 12, since the space 22 is filled with the resin cured layer 12, it is possible to reliably prevent water such as rainwater from entering and accumulating in the space 22. It

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。 Further, even if, for example, an air pocket or a curing failure occurs due to some cause in any of the multilayer resin cured layers 12A, 12B, and 12C forming the resin cured layer 12, If the other resin cured layers 12A, 12B, 12C other than this are normal foamed resin layers without air pockets or defective curing, the normal resin cured layers 12A, 12B, 12C allow water to enter the space 22. Since the intrusion of the sash is prevented, 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 Repair State of Sash Frame As described above, after the completion of the injection work of the foamable resin into the space portion 21, a part of the foamed resin layer overflows from each of the resin injection holes 31. After the overflow resin portion formed by curing is cut off, and after the work of injecting the foamable resin into the space portion 22 is completed, a part of the foamed resin layer overflows from substantially the entire area of the band-shaped opening 14. The overflow resin portion formed by curing is cut off. By cutting off each overflow resin portion in this way, the resin cross section of the resin cured layer 11 on the space 21 side and the resin on the space 22 side are cut. The resin cross section of the cured 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, by observing these resin cross sections, it is possible to inspect the quality of the repaired state of the sash frame. That is, it is possible to detect, with a high probability, a curing failure occurring in a relatively deep portion of the resin cured layers 11 and 12 in each of the space portions 21 and 22 or the occurrence of a cavity due to an air pool, and a visual inspection is performed. Inspection accuracy and reliability are improved. In addition, this ensures the reliability of repairing the existing sash frame 3 and the new sash frame 4, and if defective curing, air pockets, or cavities are found by inspection, re-installation or partial repair It is possible to promptly take countermeasures such as specific 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 size of the resin injection hole 31 is set to a diameter of 5 to 30 mm when the resin injection hole 31 is a circular hole, and one side 5 when the resin injection hole 31 is a rectangular hole. Although it is set to ˜30 mm, it is not preferable to make the resin injection hole 31 too small because the resin cross section when the overflow resin portion is cut out becomes small and observation becomes difficult. On the other hand, if it is too large, the rigidity of the new sash frame 4 may be impaired and its strength performance may be deteriorated, which is not preferable.

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 the 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
1 ・・Frame 2 ・・Opening 3 ・・Existing sash frame 4 ・・New sash frame 5 ・・Frame mounting seat 6 ・・Coupling 7 ・・Sealing material 8 ・・Sealing material 9 ・・Construction equipment 11 ・・Resin Hardened layer 12 ・・Cured resin layer 14 ・・Band-shaped opening 15 ・・Band-shaped opening 21 ・・Space part 22 ・・Space part 31 ・・Resin injection hole 33 ・・Drainage 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 frame, with a band-shaped opening having a predetermined width formed between the sash frame and the peripheral edge of the existing sash frame on at least one side of the front and back surfaces of the existing sash frame. A method of repairing a sash frame, which comprises mounting and fixing, and sealing the band-shaped opening with a sealing material,
By removing the sealing material, the space portion 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,
After that, a foaming resin is injected into the space through the band-shaped opening, a part of the foamed resin layer is overflowed from almost the entire area of the band-shaped opening to be cured, and then the overflowing resin part is cut off. A method for repairing a sash frame, which is characterized in 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 to foam the resin, the resin injection work should be performed in multiple steps.
By filling the foamed resin layer formed by the previous resin injection with the foamed resin layer related to the subsequent resin injection in order, the foamable resin is filled in substantially the entire space, and the final injection is performed. A resin cured layer is formed in the space by causing a part of the foamed resin layer to overflow outward from substantially the entire area of the strip-shaped opening and cured, and the overflow resin portion that has overflowed from the strip-shaped opening and hardened is cut off. A method of repairing a sash frame, which comprises:
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, which is formed between the inner peripheral surface of the opening of the body and the outer peripheral surface of the existing sash frame facing the opening and communicates with the space extending in the circumferential direction, is provided with the existing sash frame or its attachment. A plurality of members are formed on the side surface of the member at predetermined intervals in the extending direction of the space,
Then, a method for repairing the sash frame is characterized in that a resin cured layer is formed in the space by injecting a foaming resin into the space through the resin injection hole and foaming and curing the resin.
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,
It is assumed that the work of injecting the foamable resin into the above-mentioned space portion is divided into plural times,
Forming a plurality of the resin injection holes at predetermined intervals in the extending direction of the space,
Of the plurality of resin injection holes, an arbitrary resin injection hole is set 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 side closer to the first resin injection hole. The second resin injection hole,
The foamable resin is injected into the space through the first resin injection hole to expand and expand the foamed resin, and the foamable resin is expanded to the extent that a part of the foamed resin layer that is in the process of foaming overflows from the second resin injection hole. Stop the injection of
Next, a foaming resin is injected into the space through the third resin injection hole to expand and expand, and foaming is performed to the extent that a part of the foamed resin layer that is in the process of foaming overflows from the fourth resin injection hole. Injection of the volatile resin shall be stopped,
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 in the space, and at the same time, the resin overflows from the resin injection hole and is cured. A method for repairing a sash frame, which comprises cutting off the overflow 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 portion, an appropriate number of water drain holes are formed at appropriate places of the existing sash frame and the new sash frame, and through the water drain hole, drain water accumulated in the space portion, Then, a method for repairing a sash frame, which comprises injecting a foaming resin into the space and then foaming and 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 characterized by inspecting the quality of the repair state of the sash frame by observing a resin cross section formed by cutting out the cured overflow resin portion overflowing from the band-shaped opening.
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 the repair state of a sash frame repaired by the sash frame repair method according to claim 4.
A repair state inspection method characterized by inspecting the quality of the repair state of the sash frame by observing a resin cross section formed by cutting out the overflow resin portion that has overflowed from the resin injection hole to the outside and hardened.
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