JP6765114B2 - How to repair the sash frame - Google Patents

Description

The present invention relates to a method for repairing a sash frame such as a window or a door fixed to an opening of a skeleton.

When remodeling a sash frame such as an aged window or door, a method of fixing a new sash frame inside the existing sash frame without removing the existing sash frame is known. , The method of fixing the new sash frame to the existing sash frame is roughly divided into the following two construction methods.

One of them is a construction method called "cover construction method" or "cover construction method". For example, as shown in Patent Document 1, a new sash frame is fitted inside an existing sash frame, and both of them are used. This is a method of fixing the space by welding or screwing via a connecting member.
The other one is, for example, as shown in Patent Document 2, in which a foamable resin is injected into a space formed between an existing sash frame and a new sash frame to be foam-cured, and the above is described through the resin-cured layer. This is a method of fixing the new sash frame to the existing sash frame.

JP-A-2007-138560 JP-A-2010-156193

By the way, in FIG. 5, as an example of the "covering method", the existing sash frame 3 that was originally attached to the opening 2 provided in the skeleton 1 has become old, so that the existing sash frame 3 is newly installed inside the existing sash frame 3. A state in which a new sash frame 4 is fitted and both of them are fixed via a connector 6 is shown.

In this state, the outer peripheral surface 3b of the existing sash frame 3 is in contact with the inner peripheral surface 2a of the opening 2, but the peripheral wall 3a extending in the thickness direction of the existing sash frame 3 is from the outer peripheral surface 3b. Since it is formed at a position retracted toward the center of the frame, a space extending along the inner peripheral surface 2a of the opening 2 is provided between the peripheral wall 3a and the inner peripheral surface 2a of the opening 2. 21 has occurred. The existing sash frame 3 is fixed to the inner peripheral surface of the opening 2 at the lower edge portion thereof via the frame mounting seat 5 as an accessory of the existing sash frame 3. Then, the space portion 21 is formed between the frame mounting seat 5 and the existing sash frame 3.

Further, a space portion 22 is formed between the peripheral wall 3a of the existing sash frame 3 and the peripheral wall 4a of the new sash frame 4. The space portion 22 faces the outside through the band-shaped openings 14 and 15 that open on both the front and back surfaces of the existing sash frame 3 and the new sash frame 4, and each of the band-shaped openings 14 and 15 faces the outside. They are sealed with sealing materials 7 and 8, respectively.

However, in a state where the new sash frame 4 is attached to the inside of the existing sash frame 3 by such a "covering method" and both of them are integrated, as described above, the inside of the opening 2 of the skeleton 1 Since the space portion 21 is generated between the peripheral surface 2a and the peripheral wall 3a of the existing sash frame 3, for example, when the skeleton 1 is cracked due to aging, this skeleton 1 is cracked. Water W such as rainwater may infiltrate into the space 21 and collect there along the cracks. Then, if the water W accumulated in the space portion 21 is left unattended, for example, an iron connecting tool arranged in the space portion 21 for fixing the existing sash frame 3 to the skeleton 1 (not shown). There is a concern that the existing sash frame 3 may be corroded and the fixing strength of the existing sash frame 3 may be impaired, or that water W contaminated by the mixing of iron rust may seep out to the surface side of the skeleton 1 and contaminate the surrounding area.

On the other hand, since the space portion 22 is generated between the peripheral wall 3a of the existing sash frame 3 and the peripheral wall 4a of the new sash frame 4, for example, deterioration due to long-term use or poor construction may occur. As a result, water W such as rainwater may infiltrate into the space 22 through a gap between the sealing materials 7 and 8 and the existing sash frame 3 and the newly installed sash frame 4, and may collect there. If the water W accumulated in the space 22 is left as it is, the iron connecting tool 6 is corroded, the connection strength between the existing sash frame 3 and the new sash frame 4 is impaired, or iron rust is mixed. There is a concern that the brown water W may seep out from the gap between the sealing materials 7 and 8 and the existing sash frame 3 and the newly installed sash frame 4 and stain the wall surface of the skeleton 1.

The problem caused by the intrusion of rainwater into the above-mentioned space portions 21 and 22 due to the deterioration of the existing sash frame 3 and the new sash frame 4 can be solved by removing the existing sash frame 3 and the new sash frame 4 or removing the problem. In order to solve the problem without significantly changing the structure, it is necessary to repair each of the sash frames 3 and 4 so as to prevent rainwater from entering the spaces 21 and 22. As one of the useful construction methods as this repair method, a foamable resin is injected into each of the above space portions 21 and 22 and cured, and the inside of each of the space portions 21 and 22 is filled with a resin cured layer to fill each space. It is conceivable to prevent the intrusion of water into the parts 21 and 22 and the occurrence of a puddle.

However, even if the repair method by injecting the foamable resin is applied to the repair of the existing sash frame 3 and the new sash frame 4, all the above problems are not solved. That is, even if the foaming resin injection method is adopted, simply injecting the foamable resin into the space portions 21 and 22 and foaming the foam resin is sufficient for the entire area of the space portions 21 and 22. Air reservoirs are generated here and there, and after the foamable resin is cured, the air reservoirs become cavities and remain in the cured resin layer. If cavities remain in such a cured resin layer, there arises a problem that rainwater or water due to dew condensation that has infiltrated into each of the space portions 21 and 22 infiltrates into the room through the cavities. Become.

Therefore, according to the present invention, in a sash frame in which water pools are generated in each space generated between the skeleton, the existing sash frame, and the newly installed sash frame, a foamable resin is injected into each space to fill the space. By filling with the foamed resin layer, it is possible to prevent the generation of water pools in each of the spaces, and to reinforce the fixed state between the skeleton and the existing sash frame and between the existing sash frame and the new sash frame. The purpose of this study is to propose a method for repairing a sash frame that can prevent the formation of cavities when the inside of each space is filled with a foamable resin.

In the first invention of the present application, the new sash frame is fitted and fixed to the inside of the existing sash frame fixed to the opening of the skeleton in a state of being close to or close to the peripheral edge of the existing sash frame. A method of repairing a sash frame that is formed between the inner peripheral surface of the existing sash frame and the outer peripheral surface of the new sash frame and has water accumulated in a space extending in the circumferential direction .
A side surface of the new sash frame, draining small holes serving as a hole and a resin injection hole plurality formed at predetermined intervals in the extending direction of the space portion through said small holes, withdrawn water collected each space portion ,
After that, a foamable resin is injected into the space from the small holes to foam and cure the foam. At that time , any small hole among the plurality of small holes is designated as the first resin injection hole. The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially formed from the small holes on the side closer to the first resin injection hole, and foamability is formed in the space from the first resin injection hole. The resin is injected and foamed and expanded, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole, and then the third resin injection is performed. A foamable resin is injected into the space through the holes to expand the foam, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the fourth resin injection hole. age,
By repeating the stepwise injection work of the foamable resin, the foamable resin is filled in the space and cured to form a resin cured layer, and the overflow resin portion that overflows from the resin injection hole and is cured. It is characterized by excising.

Here, as the foamable resin, a resin capable of foaming and curing a liquid resin raw material by a chemical reaction such as a urethane resin, an epoxy resin, an acrylic resin or an olefin resin, or a liquid resin raw material can be used. A resin that can be cured while forming bubbles by introducing a gas such as nitrogen, LPG or Freon can be used. In particular, a rigid polyurethane resin that causes a chemical reaction by mixing two kinds of liquid resin raw materials to foam and cure is more preferable because it is easy to handle and has a large compressive strength after curing.

In the second invention of the present application, the new sash frame is fitted and fixed to the inside of the existing sash frame fixed to the opening of the skeleton in a state of being close to or close to the peripheral edge of the existing sash frame. In the sash frame , a method of repairing a sash frame formed between the inner peripheral surface of the opening of the skeleton and the outer peripheral surface of the existing sash frame facing the sash frame and in which water is collected in a space extending in the circumferential direction. There,
A side surface of the existing sash frame, draining small holes serving as a hole and a resin injection hole plurality formed at predetermined intervals in the extending direction of the space portion through said small holes, withdrawn water collected each space portion ,
After that, a foamable resin is injected into the space from the small holes to foam and cure the foam. At that time , any small hole among the plurality of small holes is designated as the first resin injection hole. The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially formed from the small holes on the side closer to the first resin injection hole, and foamability is formed in the space from the first resin injection hole. The resin is injected and foamed and expanded, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole, and then the third resin injection is performed. A foamable resin is injected into the space through the holes to expand the foam, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the fourth resin injection hole. age,
By repeating the stepwise injection work of the foamable resin, the foamable resin is filled in the space and cured to form a resin cured layer, and the overflow resin portion that overflows from the resin injection hole and is cured. It is characterized by excising.

(A) First Invention of the present application According to the method of repairing the sash frame according to the first invention of the present application, the inside of the existing sash frame fixed to the opening of the skeleton, with respect to the peripheral edge of the existing sash frame. A sash frame in which a new sash frame is fitted and fixed in close or close to each other. A space formed between the inner peripheral surface of the existing sash frame and the outer peripheral surface of the new sash frame and extending in the circumferential direction. This is a method of repairing a sash frame in which water has accumulated in a portion. On the side surface of the newly installed sash frame, a plurality of small holes that also serve as drain holes and resin injection holes are formed at predetermined intervals in the extending direction of the space portion. through the small hole, pull the water collected each space portion, thereafter, although foaming cure this by injecting a foaming resin into said space portion from the small hole, in which the plurality of small holes Of these, any small hole is used as the first resin injection hole, and the second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially arranged from the small hole on the side closer to the first resin injection hole. Then, a foamable resin is injected into the space from the first resin injection hole to expand the foam, and the foamed resin layer is foamed to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole. The injection of the sex resin is stopped, then the foamable resin is injected into the space from the third resin injection hole to expand the foam, and the foamed resin layer in the process of foaming from the fourth resin injection hole is formed. The injection of the foamable resin is stopped to the extent that a part of the foam overflows, and by repeating the stepwise injection of the foamable resin, the foamable resin is filled in the space and cured to cure the resin cured layer. The overflow resin portion that overflows from the resin injection hole and is hardened is cut off, so that the following effects can be obtained.

(A-1) The inside of the space is filled with a hardened resin layer, and water such as rainwater is surely prevented from entering the space and accumulating here. For example, the existing sash frame and the newly installed sash The connecting tool that connects the frames is not corroded by the accumulated water, the fixed state of the existing sash frame and the new sash frame is maintained, and the water mixed with iron rust does not seep out to the outside. The surface is prevented from being soiled and its aesthetic appearance is maintained.

(A-2) Since the space is filled with the cured resin layer, the rigidity of the cured resin layer reinforces the fixed state between the existing sash frame and the newly installed sash frame, and the sash frame is correspondingly reinforced. The fixing performance as a whole is improved.

(A-3) When the foamable resin expands and expands in the space portion and sequentially diffuses and moves into the space portion, the air in the space portion is gradually pushed forward in the expansion direction of the foamable resin, and a plurality of the foamable resins are pushed forward. Since the air is discharged to the outside from the formed resin injection hole, air is caught in the foamable resin and becomes an air pool, which may remain as a cavity that causes rain leakage or dew condensation after the foamable resin is cured. There is no such thing, for example, rainwater that has entered the space or water due to dew condensation is surely prevented from entering the room through the cavity.

(A-4) In the space portion, since the foamed resin layer injected later and expanded by foaming is sequentially laminated on the front side in the expansion direction of the foamed resin layer injected first and expanded by foaming, the inside of the space portion. It is surely prevented that the air is caught in the foamed resin layer to form an air pool, and that the air pool remains as a cavity that causes rain leakage or dew condensation in the resin cured layer after curing. As a result, it is possible to more reliably prevent rainwater or water due to dew condensation that has entered the space from entering the room through the cavity.

(A-5) When injecting the foamable resin, one of the foamed resin layers in the process of foaming from another resin injection hole located on the front side in the foaming expansion direction with respect to the resin injection hole actually used for the injection work. By visually observing the overflowing portion, it can be confirmed that the foamable resin is sufficiently filled up to the portion of the other resin injection holes, so that the injection amount of the foamable resin is insufficient or the foamability Poor filling of the foamable resin due to insufficient foaming of the resin or the like is surely prevented, and the work cost can be reduced by facilitating the injection work of the foamable resin.

(A-6) In the repaired sash frame, since the overflowing resin portion that overflows from the resin injection hole and is hardened is cut off, the aesthetic appearance around the sash frame is maintained.

(A-7) Prior to injecting the foamable resin into the space, a plurality of small holes serving as drain holes and resin injection holes are provided at appropriate positions in the newly installed sash frame at predetermined intervals in the extending direction of the space. The foamed resin is formed, and the water accumulated in each of the above spaces is drained through the small holes, and then the foamable resin is injected into the above spaces to be foamed and cured. Will be done in a space where there is no water pool.

Here, since the foamable resin has a property that foaming failure or curing failure is likely to occur when it comes into contact with water, if water is accumulated in the space, foaming occurs in the portion where the water is accumulated. Cavities are created due to poor foaming or curing of the sex resin, and these cavities remain in the cured resin layer. Further, even if the foamable resin does not cause poor foaming or curing, water is an incompressible fluid, so if water is accumulated in the space, it is injected into the space. Even if the foamable resin foams and expands, the water pool portion is not filled, and this portion remains as a cavity (after the water evaporates) in the resin cured layer in the space portion.

The cavities remaining in these cured resin layers impair the mounting strength of the existing sash frame and the newly installed sash frame, or rainwater or the like infiltrates into the cavities after the repair work of the sash frame is completed and stains the surface of the skeleton. However, in the repair method of the present invention, since there is no water pool in the space as described above, the occurrence of such a situation can be prevented and a highly reliable sash frame can be prevented. Can be obtained.

(B) Second Invention of the Present Application According to the method of repairing the sash frame according to the second invention of the present application, the inside of the existing sash frame fixed to the opening of the skeleton, with respect to the peripheral edge of the existing sash frame. A sash frame in which a new sash frame is fitted and fixed in close or close state, and is formed between the inner peripheral surface of the opening of the skeleton and the outer peripheral surface of the existing sash frame facing the inner peripheral surface. This is a method of repairing a sash frame in which water collects in a space extending in the circumferential direction. Small holes that serve as both a drain hole and a resin injection hole are provided on the side surface of the existing sash frame at predetermined intervals in the extending direction of the space. in a plurality form, through the small hole, pull the water collected each space portion, thereafter, although foaming cure this by injecting a foaming resin into said space portion from the small hole, in which, Of the plurality of small holes , any small hole is designated as the first resin injection hole, and the second resin injection hole and the third resin injection hole are sequentially arranged from the small hole on the side closer to the first resin injection hole. As the fourth resin injection hole, a foamable resin is injected into the space from the first resin injection hole to expand the foam, and a part of the foamed resin layer in the process of foaming from the second resin injection hole. The injection of the foamable resin is stopped to the extent that the sash overflows, and then the foamable resin is injected into the space from the third resin injection hole to expand the foam, and the foam is being expanded from the fourth resin injection hole. It is assumed that the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the above is overflowed, and the foamable resin is filled in the space by repeating the stepwise injection of the foamable resin. Since the cured resin layer is formed by curing and the overflowing resin portion that overflows from the resin injection hole and is cured is cut off , the following effects can be obtained.

(B-1) The inside of the space is filled with a hardened resin layer, and water such as rainwater is surely prevented from entering the space and accumulating here. For example, a connection connecting the existing sash frame and the new sash frame. The tools are not corroded by the accumulated water, the existing sash frame and the new sash frame are maintained in a fixed state, and the water mixed with iron rust does not seep out to prevent the surface of the skeleton from becoming dirty. And its aesthetics are maintained.

(B-2) Since the inside of the space is filled with the cured resin layer, the rigidity of the cured resin layer reinforces the fixed state between the existing sash frame and the newly installed sash frame, and the fixing performance of the entire sash frame is increased accordingly. Is enhanced.

(B-3) When the foamable resin expands and expands in the space portion and sequentially diffuses and moves into the space portion, the air in the space portion is gradually pushed forward in the expansion direction of the foamable resin, and a plurality of the foamable resins are formed. Since the air is discharged to the outside from the injection hole, air is caught in the foamable resin and becomes an air pool, which does not remain as a cavity that causes rain leakage or dew condensation after the foamable resin is cured. For example, a space. It is surely prevented that rainwater or water due to dew condensation entering the part enters the room through the cavity.

(B-4) In the space portion, the foamed resin layer injected later and expanded and expanded is sequentially laminated on the front side in the expansion direction of the foamed resin layer injected first and expanded and expanded, so that the air in the space portion is made of foamed resin. It is surely prevented that an air pool is generated by being caught in the layer and that the air pool remains as a cavity that causes rain leakage or dew condensation in the resin cured layer after curing, and as a result, it is prevented in the space portion. It is even more reliable to prevent infiltrated rainwater or water due to dew condensation from entering the room through the cavity.

(B-5) When injecting the foamable resin, a part of the foamed resin layer in the process of foaming overflows from another resin injection hole located on the front side in the foaming expansion direction from the resin injection hole actually used for the injection work. Since it can be confirmed that the foamable resin is sufficiently filled up to the other resin injection holes by visually observing, the injection amount of the foamable resin is insufficient, the foaming of the foamable resin is insufficient, and the like. In addition to reliably preventing defective filling of the foamable resin due to the above, the reduction of the work cost is promoted by facilitating the injection work of the foamable resin.

(B-6) In the repaired sash frame, since the overflowing resin portion that overflows from the resin injection hole and is hardened is cut off, the aesthetic appearance around the sash frame is maintained.

(B-7) Prior to injecting the foamable resin into the space, a plurality of small holes serving as drain holes and resin injection holes are formed at appropriate positions in the existing sash frame at predetermined intervals in the extending direction of the space. The water accumulated in each of the above spaces is drained through the holes, and then the foamable resin is injected into the above spaces to be foamed and cured, so that the foaming expansion of the foaming resin does not cause water accumulation. It will be done in the space part.

Here, since the foamable resin has a property that foaming failure or curing failure is likely to occur when it comes into contact with water, if water is accumulated in the space, foaming occurs in the portion where the water is accumulated. Cavities are created due to poor foaming or curing of the sex resin, and these cavities remain in the cured resin layer. Further, even if the foamable resin does not cause poor foaming or curing, water is an incompressible fluid, so if water is accumulated in the space, it is injected into the space. Even if the foamable resin foams and expands, the water pool portion is not filled, and this portion remains as a cavity (after the water evaporates) in the resin cured layer in the space portion.

The cavities remaining in these cured resin layers impair the mounting strength of the existing sash frame and the newly installed sash frame, or rainwater or the like infiltrates into the cavities after the repair work of the sash frame is completed and stains the surface of the skeleton. However, in the repair method of the present invention, since there is no water pool in the space as described above, the occurrence of such a situation can be prevented and a highly reliable sash frame can be prevented. Can be obtained.

It is a perspective view which shows the state of the repair work performed by applying the repair method of the sash frame which concerns on 1st Embodiment of this invention. It is an enlarged cross-sectional view of the eye of FIG. 1 and shows the state before the resin injection work. It is an enlarged cross-sectional view of the eye of FIG. 1 and shows the state after the resin injection work is completed. It is a roll arrow view of FIG. It is sectional drawing which shows an example of the conventional "covering method" which attached the new sash frame inside the existing sash frame.

A: Embodiment In FIG. 1, a sash frame portion to be repaired by applying the repair method according to the embodiment of the present invention, that is, a window or a door installed in an opening 2 provided in the skeleton 1 from the beginning. Inside the existing sash frame 3 of the above, a sash frame portion formed by fitting and fixing a new sash frame 4 having a shape smaller than that of the existing sash frame 3 by a "covering method" is shown.

A-1: Specific structure of the existing sash frame 3 and the new sash frame 4 As shown in FIG. 2, the existing sash frame 3 is fitted in the opening 2 of the skeleton 1 and has an appropriate fixture ( It is fixed to the skeleton 1 side by (not shown). The existing sash frame 3 includes a pair of rectangular frame-shaped side walls 3a and 3a facing each other with a predetermined dimension thereof, and a peripheral wall 3b connecting the pair of side walls 3a and 3a. The peripheral wall 3b is formed over the entire circumference of the side wall 3a at a position deviated from the outer peripheral end of the side wall 3a toward the center of the frame by a predetermined dimension. The portion of the peripheral wall 3a corresponding to the lower surface of the existing sash frame 3 is formed so as to incline downward from the indoor side to the outdoor side in consideration of drainage.

Then, in the fixed state of the existing sash frame 3 to the skeleton 1, the upper surface side and the left and right outer peripheral ends of the side wall 3b of the existing sash frame 3 are the inner peripheral upper surface 2a and the inner peripheral side surface of the opening 2, respectively. Although it is in contact with or close to 2c, the outer peripheral end on the lower surface side thereof is placed on the inner peripheral lower surface 2b of the opening 2 via the frame mounting seat 5. Therefore, in this fixed state, a space portion 21 having a flat rectangular cross-sectional shape is formed between the inner peripheral upper surface 2a and the inner peripheral side surface 2c of the opening 2 and the peripheral wall 3b of the existing sash frame 3. .. On the other hand, a space portion 21 having a substantially trapezoidal cross-sectional shape is formed between the frame mounting seat 5 and the peripheral wall 3b of the existing sash frame 3. The space portion 21 is continuous over the entire circumference of the existing sash frame 3.

On the other hand, the new sash frame 4 is fitted and fixed to the inside of the existing sash frame 3 by the "covering method", and its shape is slightly matched to the inner peripheral shape of the existing sash frame 3. The outer peripheral edge of the side wall 4a is close to or close to the inner peripheral edge of the side wall 3a of the existing sash frame 3, and the peripheral wall 4b of the new sash frame 4 and the existing sash frame A space portion 22 continuous in the extending direction of each of the sash frames 3 and 4 is formed between the peripheral walls 3b of 3. The peripheral wall 4b of the new sash frame 4 is inclined downward from the indoor side to the outdoor side in consideration of drainage, as in the case of the peripheral wall 3b of the existing sash frame 3, on the lower side thereof. The space portion 22 is opened to the outdoor side at this downwardly inclined portion and is closed by a removable sealing material 8.

Then, the existing sash frame 3 and the new sash frame 4 are fixed at predetermined relative positions by a plurality of connecting tools 6 provided at predetermined intervals (for example, about 400 mm) in the longitudinal direction (extension direction) thereof. ing. In this embodiment, the connecting tool 6 is composed of bolts having a predetermined length, is inserted into the peripheral wall 4b of the new sash frame 4 from the inner surface side thereof, and the tip end side thereof is inserted into the peripheral wall 3b of the existing sash frame 3. It is designed to be screwed into a nut 6a that has been welded and fixed in advance. Further, in FIG. 2, reference numeral 9 is a fitting attached to the inside of the newly installed sash frame 4.

A-2: Preparatory work before injecting foamable resin A-2-1: Preparatory work for the existing sash frame 3 With respect to the existing sash frame 3, the inner peripheral upper surface 2a of the opening 2 on the skeleton 1 side The work of draining the water accumulated in the space 21 formed between the spaces 21 and the work of forming the resin injection hole 31 for injecting the resin into the space 21 are performed. In this embodiment, the operation is performed. When the resin injection hole 31 is formed on the side wall 3a of the existing sash frame 3, the formation position in the vertical direction thereof is set to a position directly above the peripheral wall 3b so that the resin injection hole 31 can also be used as a drain hole. Therefore, there is no dedicated drainage hole.

As shown in FIGS. 1 and 2, the resin injection hole 31 includes three parts of the side wall 3a on the indoor side extending in a rectangular frame shape over the entire circumference of the existing sash frame 3, excluding the bottom portion, and the resin injection hole 31. The side surfaces of the frame mounting seat 5 arranged at the bottom of the existing sash frame 3 are formed at predetermined intervals in the longitudinal direction (extension direction). Here, it is desirable that the dimensional shape of the resin injection hole 31 is a circular hole having a diameter of about 5 to 30 mm or a rectangular hole having a side of about 5 to 30 mm. Further, it is desirable that the formation interval of the resin injection holes 31 is about 50 to 200 mm.

Among the resin injection holes 31 thus formed, the plurality of resin injection holes 31 provided on the upper surface side of the existing sash frame 3 and the plurality of resin injection holes 31 provided in the frame mounting seat 5. However, it functions as a drain hole, and the water accumulated in the space portion 21 and the water accumulated in the frame mounting seat 5 are quickly discharged, whereby the water accumulated in the space portion 21 which is performed after that is quickly discharged into the space portion 21. In the resin injection work of the foamable resin, inconvenience caused by the water accumulated in the space 21 can be prevented.

That is, since the foamable resin has a property that foaming failure or curing failure is likely to occur when it comes into contact with water, if water is accumulated in the space portion 21, the portion where the water is accumulated is Cavities are created due to poor foaming or curing of the foamable resin, and these cavities remain in the cured resin layer. Further, even if the foamable resin does not cause foaming failure or curing failure, since water is an incompressible fluid, if water is accumulated in the space portion 21, the space portion 21 Even if the foamable resin injected into the foam expands, the water pool portion is not filled, and this portion remains as a cavity (after the water has evaporated) in the resin cured layer in the space portion. .. The cavities remaining in the resin cured layer impair the fixing strength of the existing sash frame 3 with respect to the opening 2, or rainwater or the like infiltrates into the cavities after the repair work of the sash frame is completed, and the surface of the skeleton. It causes stains on the surface, but all of these are eliminated.

A-2-2: Preparatory work for the new sash frame 4 The resin injection hole 32 is also formed in the new sash frame 4 as a preparatory work before injecting the foamable resin. That is, in this embodiment, as shown in FIG. 1, the resin injection hole 32 is formed over the entire circumference of the new sash frame 4. Then, as shown in FIG. 2, the formation position is a position directly above (directly outside) the peripheral wall 4b on the side wall 4a on the indoor side, and a plurality of the formation positions are formed at predetermined intervals (about 50 to 200 mm) in the longitudinal direction thereof. .. Therefore, of these resin injection holes 32, the resin injection hole 32 provided on the upper surface side of the new sash frame 4 is also used as a drain hole for water collected on the upper side of the peripheral wall 4b of the new sash frame 4. .. The size and shape of the resin injection hole 32 is a circular hole having a diameter of about 5 to 30 mm or a rectangular hole having a side of about 5 to 30 mm, as in the case of the resin injection hole 31 on the side of the existing sash frame 3. It is desirable to have.

As described above, even if water has accumulated in the space 22 at the start of repair of the sash frame, the water accumulated on the upper side of the peripheral wall 4b of the newly installed sash frame 4 due to the formation of the resin injection hole 32. Is quickly discharged to the outside through the resin injection hole 32. Further, the water accumulated on the upper surface of the peripheral wall 3b of the existing sash frame 3 on the lower surface side of the new sash frame 4 is discharged to the outside by removing the sealing material 8. As a result, similar to the drainage effect on the existing sash frame 3 side, the inconvenience caused by the water accumulated in the space 22 is eliminated on the new sash frame 4 side as well. Therefore, the resin cured layer 12 can be formed in the space 22 in an appropriate state, and the fixed state between the existing sash frame 3 and the new sash frame 4 is reinforced by the rigidity of the resin cured layer 12. , The occurrence of stains on the surface of the skeleton 1 can be prevented.

A-3: Foamable resin injection work When the above-mentioned preparatory work is completed, the foamable resin injection work described below is performed.

The space 21 formed between the skeleton 1 and the existing sash frame 3 is filled with foamable resin through a plurality of resin injection holes 31 provided in the existing sash frame 3. The injection of the foamable resin into the portion 21 is mainly performed for the purpose of preventing water from entering between the skeleton 1 and the existing sash frame 3 or reinforcing the fixed state of the existing sash frame 3 with respect to the skeleton 1. .. Further, the foaming resin is injected into the space 22 formed between the existing sash frame 3 and the new sash frame 4 through a plurality of resin injection holes 32 provided in the new sash frame 4. The injection of the foamable resin into the space 22 mainly prevents water from entering between the existing sash frame 3 and the new sash frame 4, or reinforces the fixed state of the existing sash frame 3 and the new sash frame 4. It is done for the purpose. As described above, although the purpose of injecting the foamable resin into each of these spaces 21 and 22 is slightly different, the contents of the work and the action and effect of injecting the foamable resin are the same. Therefore, here, the existing sash frame is described above. The work of injecting the foamable resin into the space portion 22 between the new sash frame 4 and the new sash frame 4 will be described as an example, and this will be used for the work of injecting the foamable resin into the space portion 21 between the skeleton 1 and the existing sash frame 3. The description will be omitted.

By the way, the injection of the foamable resin into the space portion 22 can be completed by a single injection operation, but in this embodiment, the inside of the resin cured layer 12 formed in the space portion 22. From the viewpoint of preventing the remaining cavities of the above, the foaming resin is injected into the space 22 in a predetermined amount in a plurality of times. Here, for convenience of explanation, the first resin injection hole for first injecting any one of the resin injection holes 32 formed at predetermined intervals in the longitudinal direction of the new sash frame 4. It is tentatively called 32. Further, they are tentatively referred to as a second resin injection hole, a third resin injection hole, and a fourth resin injection hole in order of increasing distance from the first resin injection hole 32 in one direction.

Then, first, an injection gun (not shown) is inserted into the space 22 through the first resin injection hole 32, and the foamable resin is injected into the space 22. The injected foamable resin diffuses and expands forward while expanding and expanding in the space 22, and when this reaches the second resin injection hole 32, a part of the foamed resin layer in the process of foaming is the second resin. It overflows from the injection hole 32 to the outside. When the amount of overflow reaches a predetermined amount, the work of injecting the foamable resin from the first resin injection hole 32 is stopped.

Next, the injection gun is inserted into the third resin injection hole 32 one front of the second resin injection hole 32 to inject the foamable resin into the space 22, and the fourth resin injection hole When a predetermined amount of the foamed resin layer in the process of foaming overflows from 32, the work of injecting the foamable resin from the third resin injection hole 32 is stopped. As shown in FIGS. 3 and 4, the resin cured layer 12 is formed by curing the expanded foamed resin in the space 22 by sequentially repeating the injection operation of the foamable resin. However, it will be formed in multiple layers in the foaming expansion direction. That is, as indicated by reference numerals in FIG. 4, the first resin cured layer 12A, the second resin cured layer 12B, the third resin cured layer 12C, and the like are formed in a multi-layered manner. ..

In the same way that the multilayer resin cured layer 12 is formed in the space portion 22 in this way, the resin cured layer 11 is the first on the space portion 21 side of the existing sash frame 3 side. The resin cured layer 11A, the second resin cured layer 11B, the third resin cured layer 11C, and the like are formed in a multi-layered manner (see FIG. 4).

As described above, the new sash frame 4 is in close contact with or close to the peripheral edge of the existing sash frame 3 by the "covering method" inside the existing sash frame 3 fixed to the opening 2 of the skeleton 1. Is fitted and fixed, a plurality of the resin injection holes 32 are formed on the side of the newly installed sash frame 4 at predetermined intervals in the extending direction of the space portion 22, and the space is formed from the resin injection holes 32. By injecting a foamable resin into the portion 22 and foam-curing it to form a resin-cured layer 12 in the space portion 22, the space portion 22 is filled with the resin-cured layer 12 and the space is formed. The ingress of water into the portion 22 is prevented. Therefore, it is surely prevented that water infiltrates into the space 22 and accumulates there. For example, the connecting tool 6 connecting the existing sash frame 3 and the new sash frame 4 is corroded by the accumulated water. For example, it is possible to prevent water mixed with iron rust from seeping out and soiling the surface of the skeleton 1.

Further, when the foamable resin foams and expands in the space portion 22 and sequentially diffuses and moves into the space portion 22, the air in the space portion 22 gradually pushes forward in the expansion direction of the foamable resin. Since the air is discharged to the outside from the resin injection holes 32 formed in a plurality of pieces, air is caught in the foamable resin and becomes an air pool, which may remain as a cavity after the foaming resin is cured. Be prevented. As a result, for example, rainwater that has entered the space 22 or water due to dew condensation is surely prevented from entering the room through the cavity.

On the other hand, in this embodiment, the work of injecting the foamable resin into the space 22 is performed stepwise through the resin injection holes 32 provided in the new sash frame 4 at predetermined intervals. Therefore, in the space portion 22, the foamed resin layer injected later and expanded by foaming is sequentially laminated on the front side in the expansion direction of the foamed resin layer injected earlier and expanded by foaming. It is possible to more reliably prevent the air from being entrained in the foamable resin to form an air pool, and the air pool to remain as a cavity in the cured resin layer 12 after curing.

In this embodiment, the formation interval of the resin injection holes 32 provided in the newly installed sash frame 4 is set in the range of 50 to 200 mm, but if this interval becomes too large, the space portion 22 is used. When the foamable resin is foamed, the air in the space 22 loses a place to escape and is compressed as the expansion of the foamable resin changes, and an air pool having a high internal pressure is likely to be generated in the foamed resin layer. Not preferable. On the contrary, if the interval is too narrow, the rigidity of the newly installed sash frame 4 may be impaired and the strength performance thereof may be deteriorated, which is not preferable. From this point of view, the formation interval of the resin injection holes 32 is set in the range of "50 to 200 mm" as described above.

Further, when injecting the foamable resin, a part of the foamed resin layer in the process of foaming from another resin injection hole 32 located on the front side in the foaming expansion direction with respect to the resin injection hole 32 actually used for the injection work. By visually observing the overflow of the foam, it can be confirmed that the foamable resin is sufficiently filled up to the portion of the other resin injection holes 32, so that the injection amount of the foamable resin is insufficient or the foamability is foamable. Poor filling of the foamable resin due to insufficient foaming of the resin is surely prevented, whereby the fixing strength of the existing sash frame 3 and the newly installed sash frame 4 is maintained well, and the foaming resin injection work is performed. This facilitates the reduction of work costs.

The foamable resin may be a resin capable of foaming and curing a liquid resin raw material by a chemical reaction, such as a urethane resin, an epoxy resin, an acrylic resin or an olefin resin, or a liquid resin raw material. A resin that can be cured while forming bubbles by introducing a gas such as nitrogen, LPG or Freon is preferable. In particular, a rigid polyurethane resin that causes a chemical reaction by mixing two types of liquid resin raw materials to be foamed and cured is more preferable because it is easy to handle and has a high compressive strength after curing.

A-4: Inspection of the repaired state of the sash frame As described above, the resin injection from each of the resin injection holes 32 provided in the newly installed sash frame 4 into the space 22 is completed, and the foamed and expanded foamy resin is formed. After curing to form the resin cured layer 12, the overflowing resin portion that overflows from each of the resin injection holes 32 of the newly installed sash frame 4 and is cured is cut off.

By cutting off the overflowing resin portion, the resin cross section of the resin cured layer 12 is exposed to the outside. By observing this resin cross section, it is possible to inspect whether the repaired state of the existing sash frame 3 and the new sash frame 4 is good or bad. That is, it is possible to detect with a high probability the occurrence of curing defects or cavities caused by air pools occurring in a relatively deep part of the resin cured layer 12 in the space portion 22, and the inspection accuracy and reliability by visual inspection can be detected. Is improved. In addition, this ensures the reliability of repairs to the existing sash frame 3 and the new sash frame 4, and if the inspection finds poor curing, air pools, or cavities, the construction may be redone or a part. It is possible to promptly take countermeasures such as repairs.

In this embodiment, the dimensions of the resin injection hole 32 are set to a diameter of 5 to 30 mm when the resin injection hole 32 is a circular hole, and one side 5 when the resin injection hole 32 is a rectangular hole. Although it is set to about 30 mm, if the size of the resin injection hole 32 is made too small, the resin cross section when the overflow resin portion is excised becomes small and observation becomes difficult, which is not preferable. On the contrary, if it is made too large, the rigidity of the newly installed sash frame 4 may be impaired and the strength performance thereof may be deteriorated, which is not preferable.

The method for repairing the sash frame according to the present invention is used in the remodeling work of the sash frame.

1 ・ ・ Frame 2 ・ ・ Opening 3 ・ ・ Existing sash frame 4 ・ ・ New sash frame 5 ・ ・ Frame mounting seat 6 ・ ・ Connecting tool 7 ・ ・ Sealing material 8 ・ ・ Sealing material 9 ・ ・ Joining tool 11 ・ ・ Resin Hardened layer 12 ・ ・ Resin cured layer 14 ・ ・ Band-shaped opening 15 ・ ・ Band-shaped opening 21 ・ ・ Space part 22 ・ ・ Space part 31 ・ ・ Resin injection hole 32 ・ ・ Resin injection hole

Claims (2)

The existing sash frame is a sash frame that is fixed by fitting a new sash frame inside the existing sash frame fixed to the opening of the skeleton in a state of being close to or close to the peripheral edge of the existing sash frame. This is a method of repairing a sash frame that is formed between the inner peripheral surface of the sash frame and the outer peripheral surface of the new sash frame and has water accumulated in a space extending in the circumferential direction .
A side surface of the new sash frame, draining small holes serving as a hole and a resin injection hole plurality formed at predetermined intervals in the extending direction of the space portion through said small holes, withdrawn water collected each space portion ,
After that, a foamable resin is injected into the space from the small holes to foam and cure the foam. At that time , any small hole among the plurality of small holes is designated as the first resin injection hole. The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially formed from the small holes on the side closer to the first resin injection hole, and foamability is formed in the space from the first resin injection hole. The resin is injected and foamed and expanded, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole, and then the third resin injection is performed. A foamable resin is injected into the space through the holes to expand the foam, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the fourth resin injection hole. age,
By repeating the stepwise injection work of the foamable resin, the foamable resin is filled in the space and cured to form a resin cured layer, and the overflow resin portion that overflows from the resin injection hole and is cured. To excise
A method of repairing the sash frame, which is characterized by this. Inside the existing sash frame which is fixed to the opening of the skeleton, the existing in sash frame formed of a fixed and fitted with new sash frame in close or close state against the peripheral edge of the sash frame, the opening of the skeleton It is a method of repairing a sash frame formed between an inner peripheral surface of a portion and an outer peripheral surface of the existing sash frame facing the inner peripheral surface and in which water is collected in a space extending in the circumferential direction .
A side surface of the existing sash frame, draining small holes serving as a hole and a resin injection hole plurality formed at predetermined intervals in the extending direction of the space portion through said small holes, withdrawn water collected each space portion ,
After that, a foamable resin is injected into the space from the small holes to foam and cure the foam. At that time , any small hole among the plurality of small holes is designated as the first resin injection hole. The second resin injection hole, the third resin injection hole, and the fourth resin injection hole are sequentially formed from the small holes on the side closer to the first resin injection hole, and foamability is formed in the space from the first resin injection hole. The resin is injected and foamed and expanded, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the second resin injection hole, and then the third resin injection is performed. A foamable resin is injected into the space through the holes to expand the foam, and the injection of the foamable resin is stopped to the extent that a part of the foamed resin layer in the process of foaming overflows from the fourth resin injection hole. age,
By repeating the stepwise injection work of the foamable resin, the foamable resin is filled in the space and cured to form a resin cured layer, and the overflow resin portion that overflows from the resin injection hole and is cured. To excise
A method of repairing the sash frame, which is characterized by this.

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