Rainproof sleeve installation structure for hot water supply equipment installation opening

Abstract

To install a flashing sleeve by cutting off water of hot water supply equipment with a dry structure for various types of installation openings with a change in vertical and horizontal dimensions by repairing an existing opening of a building.SOLUTION: In a flashing sleeve A, a fixed flange plate 2 is provided in the whole circumference of an end part on an indoor side of a rectangular short cylindrical sleeve body 1, and a seal piece-like first water cutting off material S1 which is brought into elastic contact with an inner peripheral surface of an installation opening H provided on an outer wall W of an apartment house and cuts off water is provided over the whole circumference of an end part on an outdoor side of the sleeve body 1. In the flashing sleeve A, a width dimension of the first water cutting off material S1 is adjusted in correspondence with the interval with an inner surface of the installation opening H so that a difference in intervals is absorbed and primary water cutting off is executed. The fixed flange plate 2 is fixed to an internal wall surface 74 of the outer wall W through a plurality of fixing bolts 77 through a rectangular frame-like second water cutting off material S2 so that secondary water cutting off is executed with a dry structure.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a rainproof sleeve installation structure that renovates a square-sectioned hot water supply equipment installation opening in the exterior wall of an apartment building to install hot water supply equipment for supplying hot water to a bathtub in the apartment building, and provides watertightness with a dry structure. [Background technology]

[0002] Some apartment buildings use electric kilns as hot water supply equipment for their bathrooms, and these kilns are housed in square cross-section openings in the exterior walls of the apartment building with a watertight seal. In apartment buildings that are built many years ago, the bathroom equipment also deteriorates and is in urgent need of renovation.

[0003] The mainstream method of waterproofing hot water supply equipment installed in the installation openings of the aforementioned older apartment buildings has been to install a wooden frame on the interior side of the installation opening in the exterior wall, and use a wet construction using tiles, mortar, etc. After long-term use, the installation opening in the exterior wall after the wooden frame is removed is subject to severe deterioration and damage, making it necessary to repair these areas and install new hot water supply equipment with a waterproofing function. With a wet construction using mortar, the waterproofing function deteriorates in 3 to 7 years, necessitating further repairs, so a wet construction is not desirable for installing new hot water supply equipment.

[0004] Dry watertight structures for openings such as windows are known from, for example, Patent Documents 1 to 3, but all of them are for installing new windows in openings in buildings. Therefore, since the dimensions of each opening are constant as designed, it is relatively easy to design the dimensions of the watertight structure.

[0005] Since the target of the watertightness of this invention is an opening after repairing an existing opening in a building, the length and width dimensions of the opening change depending on the content or extent of the repair, and each installed opening after repair often has different dimensions. Therefore, in order to install new hot water supply equipment in the installed opening whose length and width dimensions are not constant and to perform watertightness for that equipment using a dry structure, a watertight structure with a unique concept different from the concepts disclosed in Patent Documents 1 to 3 is required. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2022-152167 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-104261 [Patent Document 3] Japanese Patent Application Laid-Open No. 2004-225463 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to make it possible to install hot water supply equipment in various installation openings with varying vertical and horizontal dimensions by repairing existing openings in a building and sealing the water with a dry structure. [Means for solving the problem]

[0008] The invention of claim 1 to solve the above problem is: An installation structure for installing a water heating system for supplying hot water to a bathtub in an apartment building by repairing an existing opening with a square cross section provided in an exterior wall of the apartment building and installing a waterproof sleeve with a dry structure, The rainproof sleeve has a rectangular short cylindrical sleeve body with a fixed flange plate around the entire circumference of the indoor end, and a sealing piece-like first water-stopping material that elastically contacts the inner circumferential surface of the installation opening and stops water around the entire circumference of the outdoor end of the sleeve body. When the sleeve body of the waterproof sleeve is inserted into the installation opening from the indoor side, the first waterproof material is in elastic contact with the inner circumferential surface of the installation opening, The fixing flange plate is fixed to the inner wall surface of the outer wall by a plurality of fixing members with a square frame-shaped second water-stopping material interposed between the fixing flange plate and the inner wall surface of the outer wall. It is characterized by the following.

[0009] According to the invention of claim 1, a first water-sealing material, a flange-like seal piece whose width can be adjusted by cutting, is provided on the outside of the exterior end of a rectangular, short-tubular sleeve body placed within the installation opening. By cutting and adjusting the width of the first water-sealing material to correspond to the distance from the interior surface of the installation opening, even if the length and width of the installation opening after repairing an existing opening are not constant, the free end of the first water-sealing material elastically contacts the interior surface of the installation opening, thereby providing primary water-sealing for the exterior end of the sleeve body. Furthermore, a fixing flange plate provided around the entire periphery of the interior end of the sleeve body is fixed to the interior surface of the exterior wall via a second water-sealing material via multiple fixing members, providing secondary water-sealing. In this way, a rainproof sleeve with the sleeve body installed inside the installation opening is double-water-sealed at both the exterior and interior ends of the sleeve body, ensuring high water-sealing performance over a long period of time thanks to its dry structure.

[0010] The invention of claim 2 is characterized in that, in the invention of claim 1, the second water-stopping material has the property of preventing water from seeping in by absorbing the infiltrating water and swelling, the second water-stopping material is contained in a deformable water-stopping material containing rail, the space surrounded by the top plate portion and both side plate portions of the water-stopping material containing rail is the containing space for the second water-stopping material, and the wall surface abutment portions of the both side plate portions are formed in a bifurcated shape.

[0011] According to the invention of claim 2, when a second water-stopping material is accommodated in the accommodation space and the water-stopping material accommodation rail arranged on the back surface of the fixed flange plate is pressed from the outside of the fixed flange plate, the water-stopping material accommodation rail, excluding the top plate portion, is deformed, and the bifurcated portions at the tips of the side plate portions adhere to the inner wall surface of the outer wall, and the entire internal second water-stopping material is also deformed and adheres to the inner wall surface, thereby sealing off water. Here, if the water-stopping effect of the first water-stopping material is incomplete and water that has penetrated the interior reaches the second water-stopping material, the second water-stopping material absorbs the water and swells, preventing further water penetration, thereby achieving even higher water-stopping performance. The second water-stopping material has permanent swelling properties, and when left in a swollen state, it shrinks to a volume close to its original volume upon drying while maintaining its water-stopping properties. This repeated swelling and drying process ensures long-term water-stopping performance.

[0012] The invention of claim 3 is 1 of In the present invention, a portion of the fixed flange plate facing the accommodation space of the sleeve body is provided with a Square cylindrical This device is characterized by the fact that it is equipped with a fixed water-stopping material that waterproofs the connecting tube and fixes it to the rainproof sleeve, and that a fixed water-stopping mechanism is formed around the entire circumference that causes all or part of the fixed water-stopping material to deform and move laterally inward due to compressive deformation, pressing it against the outer surface of the connecting tube.

[0013] According to the invention of claim 3, the fixed water-stopping material installed inside the fixed water-stopping mechanism is compressed and deformed, causing all or part of it to deform and move laterally inward and be pressed against the outer surface of the connecting tube, thereby simultaneously fixing the connecting tube to the rainproof sleeve and sealing it off.

[0014] The invention of claim 4 is the invention of claim 3, wherein the fixed water stop mechanism is a rectangular frame-shaped water stop material housing frame fixed to a portion of the fixed flange plate of the rainproof sleeve facing the connecting tube housed in the sleeve body so that an opening for arranging the water stop material protrusion is formed around the entire periphery on the side facing the connecting tube in cooperation with the fixed flange plate, Inside the water-stopping material housing frame, a slide body to which a fixed water-stopping material is integrally attached is disposed on the side of the fixed flange plate so as to be slidable in a direction perpendicular to the fixed flange plate. are It is characterized by the following.

[0015] According to the invention of claim 4, by pressing the sliding body arranged inside the water-stop material housing frame toward the fixed flange plate with a plurality of press bolts, the main body of the fixed water-stop material integral with the sliding body is compressed and deformed, and the pressing protrusion, which is integral with the main body and protrudes from the water-stop material protrusion placement opening toward the connecting tube, is deformed and moved toward the connecting tube, pressing the connecting tube. This simultaneously achieves fixing of the connecting tube to the flashing sleeve and waterproofing. In this way, by rotating the press bolts perpendicular to the fixed flange plate or the inner wall surface, a portion of the side of the fixed water-stop material where the pressing protrusion is provided is compressed and deformed along a direction parallel to the inner wall surface perpendicular to the sliding direction of the sliding body, thereby fixing and waterproofing the connector housed in the sleeve main body. Therefore, even after the bathroom wall of the bathroom equipment installed inside the room is erected, the connector in the sleeve main body can be fixed and waterproofed by rotating the press bolts from inside the bathroom.

[0016] The invention of claim 5 is the invention of claim 3, wherein the fixed water stop mechanism is a rectangular frame-shaped water stop material housing frame fixed to a portion of the fixed flange plate of the rainproof sleeve that faces the housing space of the sleeve body so that a fixed water stop material protrusion opening is formed around the entire periphery on the side facing the housing space in cooperation with the fixed flange plate, a fixed water-stopping material is integrally attached to the side of the sleeve body of the slider housed in the water-stopping material housing frame so as to be slidable in a direction parallel to the fixed flange plate, with a portion of the fixed water-stopping material protruding from the fixed water-stopping material protruding opening; The top plate portion of the sliding body on the side opposite to the side on which the fixed water-stopping material is attached is formed into a tapered surface so that the sliding body moves slightly toward the sleeve body due to a pressing force acting on the top plate portion. are It is characterized by the following.

[0017] According to the invention of claim 5, by pressing a number of pressing bolts attached to the top plate of the water-stop material housing frame against the tapered top plate of the sliding body housed in the water-stop material housing frame, the sliding body is slightly moved toward the connecting tube, and the fixed water-stop material attached to the sliding body is pressed against the outer surface of the connecting tube housed inside the sleeve body, thereby simultaneously fixing the connecting tube to the rainproof sleeve and sealing off the water. As with the invention of claim 4, even after the bathroom wall of the bathroom equipment installed on the indoor side has been erected, the connecting body inside the sleeve body can be fixed and waterproofed by rotating the pressing bolts from inside the bathroom.

[0018] The invention of claim 6 is any one of the inventions of claims 1 to 5, The first water-stopping material has a configuration in which a seal piece is integrally provided with the attachment portion, and a water-stopping material attachment portion having an attachment groove for attaching the attachment portion of the first water-stopping material is provided on the outer periphery of the outer end portion of the sleeve body, By making the protruding length of the water-stopping material attachment portion longer than the standard length, it is possible to correspond to the installation opening expanded with respect to the standard size and to make it possible to stop water with the first water-stopping material, A protruding portion is provided on the outer periphery of the sleeve body so as to protrude laterally from the outer periphery of the sleeve body. are It is characterized by the following.

[0019] The sealing piece constituting the first watertight material is designed to achieve watertightness by elastically deforming its tip and elastically contacting the inner surface of the installation opening, so the width of the sealing piece cannot be made larger than a predetermined value. Therefore, according to the invention of claim 6, by making the protruding length of the watertight material attachment portion, which is provided in a flange shape at the outdoor end of the sleeve body, longer than the standard length, it becomes possible to achieve primary watertightness with the first watertight material in accordance with the installation opening, which has been enlarged relative to the standard size.

[0020] The invention of claim 7 is based on claims 1 to 5 In any one of the above inventions, A reinforcing plate portion bent at a right angle toward the front side is formed around the entire periphery of the fixed flange plate of the waterproof sleeve, The expansion portion of the installation opening expanded relative to the reference size includes: By partially widening the fixing flange plate, the sleeve body can be fixed to the widened installation opening and watertightness can be achieved. A widened fixed flange plate with an L-shaped cross section is connected to the reinforcing plate portion. There areIt is characterized by the following.

[0021] According to the invention of claim 7, when the installation opening is expanded relative to the standard size and the fixed flange plate of the waterproof sleeve cannot be fixed to the inner surface of the exterior wall, an expanded fixed flange plate with an L-shaped cross section can be connected to the reinforcing plate portion in the part of the fixed flange plate expanded relative to the standard size, thereby partially widening the fixed flange plate, thereby making it possible to fix the sleeve body to the expanded installation opening and perform secondary water sealing. [Effects of the Invention]

[0022] According to the invention of claim 1, a first water-sealing material, a flange-like seal piece whose width can be adjusted by cutting, is provided on the outside of the exterior end of a rectangular, short-tubular sleeve body placed within the installation opening. By cutting and adjusting the width of the first water-sealing material to correspond to the distance from the interior surface of the installation opening, even if the length and width of the installation opening after repairing an existing opening are not constant, the free end of the first water-sealing material elastically contacts the interior surface of the installation opening, thereby providing primary water-sealing for the exterior end of the sleeve body. Furthermore, a fixing flange plate provided around the entire periphery of the interior end of the sleeve body is fixed to the interior surface of the exterior wall via a second water-sealing material via multiple fixing members, providing secondary water-sealing. In this way, a rainproof sleeve with the sleeve body installed inside the installation opening is double-water-sealed at both the exterior and interior ends of the sleeve body, ensuring high water-sealing performance over a long period of time thanks to its dry structure.

[0023] According to the invention of claim 3, the fixed water-stopping material installed inside the fixed water-stopping mechanism is compressed and deformed, causing all or part of it to deform and move laterally inward and be pressed against the outer surface of the connecting tube, thereby simultaneously fixing the connecting tube to the sleeve body and stopping water. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a perspective view showing the relationship between the waterproof sleeve A of the present invention, the installation opening H of the outer wall W, the connecting tube B, and the electric kiln E. FIG. [Figure 2] 1 is a partially cutaway perspective view showing a waterproof sleeve A installed in an installation opening H in an exterior wall W. FIG. [Figure 3] FIG. [Figure 4] This is also a cross-sectional view. [Figure 5] This is a plan cross-sectional view showing the arrangement of a rainproof sleeve A and an electric kiln E relative to the bathroom 83. [Figure 6] FIG. 1 is a front perspective view of the waterproof sleeve A. [Figure 7] This is a perspective view of the same as seen from the back. [Figure 8] 1 is a perspective view showing a structure in which a first waterproof material S1 in the form of a seal piece is attached to a waterproof material attachment portion 7 provided at the outdoor end of a sleeve body 1 of a rainproof sleeve A. FIG. [Figure 9] (a) is an oblique view of the first water-stopping material S1, (b) and (c) are cross-sectional views showing the seal piece 62 used in different widths, and (d) is a cross-sectional view of the water-stopping material attachment portion 7' ​​with a wider protruding width. [Figure 10] 10(a) and 10(b) are cross-sectional views of the second water-stopping material S2 before and after deformation, respectively. [Figure 11] 10(a) and 10(b) are cross-sectional views showing the state before and after the action of the fixing water-stop mechanism K that fixes the connecting tube B to the sleeve body 1 in a water-stop state. [Figure 12] 10 is a cross-sectional view showing a state in which a connecting tube B is fixed to a sleeve body 1 in a waterproof manner by another fixed waterproof mechanism K'. FIG. [Figure 13] 10 is a cross-sectional view showing that the fixed flange plate 2 can be fixed to the inner wall surface 74 by using the widened fixed flange plate 41 for an installation opening H that is larger than the standard size. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0025] As shown in Figure 1, an installation opening H with a square cross section is provided in an exterior wall W of a building by repairing an existing opening, and a rainproof sleeve A according to the present invention is attached to the installation opening H with a double waterproof structure, and a connecting tube B, also in the shape of a short rectangular cylinder, is inserted into the inside of the sleeve body 1 with a waterproof structure, and an electric kiln E, which is a piece of hot water supply equipment, is inserted into the connecting tube B with a waterproof structure. The connecting tube B is a member that supports the weight of the electric kiln E, which is a piece of hot water supply equipment, by inserting a part of the electric kiln E into it.

[0026] As shown in Figures 2 to 4, the installation openings H are repairs of existing openings where previous hot water supply equipment had been installed for a long period of time, so the length and width dimensions of each installation opening H vary depending on the type and extent of the repairs. Of the four inner surfaces of the installation opening H, which has a square cross section, the upper inner surface 71 is formed horizontally, the opposing inner surfaces 72 are formed vertically, and the lower inner surface 73 is formed as a slope that is lower on the outside so that rainwater and the like can be drained to the outside. A bathroom wall 81 with a plate thickness of approximately 10 mm is placed at a specified distance (45 to 150 mm) between it and the inner wall surface 74 of the building's outer wall W.

[0027] As shown in Figures 2 to 8, the waterproof sleeve A is made of a single sheet of metal and comprises a rectangular, short-tubular sleeve body 1 that is inserted into the installation opening H, and a fixed flange plate 2 that is integrally provided on the end of the sleeve body 1 that is located on the indoor side and has a flange-like shape facing outward, and the internal space of the sleeve body 1 serves as an accommodation space 3 for the connecting tube B. The width of the portion of the fixed flange plate 2 that corresponds to each side of the sleeve body 1 is determined by the arrangement of the walls around the installation opening H. A flange-shaped first attachment groove forming plate portion 4 is integrally formed at the end portion of the sleeve body 1 that is positioned on the outdoor side, and a second attachment groove forming plate portion 5 of the same shape as the first attachment groove forming plate portion 4 is integrated by welding to the inside (inside) of the first attachment groove forming plate portion 4 at a predetermined distance, and an attachment groove 6 is formed between the first and second attachment groove forming plate portions 4, 5 to attach the square frame-shaped first water-stopping material S1 in a flange-like shape to the outdoor side end of the sleeve body 1 by fitting the attachment portion 61 of the first water-stopping material S1 described below, thereby forming a water-stopping material attachment portion 7. The first water-stopping material S1 is made of resin and, as shown in Figures 8 and 9, has an overall rectangular frame shape corresponding to the sleeve body 1. The first water-stopping material S1 comprises an attachment portion 61 that fits into the attachment groove 6 and a seal piece 62 that is integrally formed with the attachment portion 61. When the attachment portion 61 is fitted into the attachment groove 6 of the sleeve body 1, the attachment portion 61 is integrally attached to the outer end of the sleeve body 1 in the shape of a rectangular frame (flange). The seal piece 62 of the first water-stopping material S1 is cut to a width that allows elastic deformation so that its tip end elastically contacts the inner surfaces 71-73 of the installation opening H. The first water-stopping material S1 is a water-stopping material that prevents rainwater from seeping into the room through gaps between the sleeve body 1 and the inner surfaces 71-73 of the installation opening H, and can therefore also be called a rain barrier.

[0028] The inner shape of the fixed flange plate 2, which is flange-shaped and integrally provided at the indoor end of the sleeve body 1, corresponds to the rectangular outer shape of the sleeve body 1, and its outer shape is also rectangular, with reinforcing plate portions 8a, 8b formed on the outer periphery toward the front. The fixed flange plate 2 has approximately the same width at its upper and lower horizontal sides in accordance with the arrangement of the surrounding walls, but the widths of its left and right vertical sides are significantly different, and the reinforcing plate portion 8b at the narrower vertical side is wider than the other reinforcing plate portions 8a, in order to accommodate the horizontal dimension of the installation opening H and to enable it to be expanded by connecting a widening fixed flange plate 41 (described below).

[0029] A pair of bolt support brackets 9 are welded to the upper and lower horizontally arranged portions of the first attachment groove forming plate portion 4 at a predetermined interval in the horizontal direction (lateral direction), and support bolts 12 are threadedly engaged with nuts 11 welded to the pair of bolt support brackets 9 arranged below, and the support bolts 12 are abutted against the lower inner surface 73 of the installation opening H to support the weight of the electric kiln E, which is fixed inside the sleeve body 1 of the rainproof sleeve A via a connecting tube B, as described below. The reason why bolt support brackets 9 are provided on each of the upper and lower first attachment groove forming plate portions 4 is because the rainproof sleeve A may be placed upside down depending on the wall structure on the indoor side.

[0030] The fixing flange plate 2 is fixed to the inner wall surface 74 of the exterior wall W using a second waterstop material S2 in a waterproof structure. The second waterstop material S2 has the property of preventing water intrusion by absorbing infiltrating water and swelling, and the second waterstop material S2 is housed in a deformable waterstop material housing rail 14. The waterstop material housing rail 14 is formed of a deformable thin metal plate. The space surrounded by a flat top plate portion 14a and side plate portions 14b that are curved and convex toward the sides forms a housing space 15 for the second waterstop material S2, and the tips of the side plate portions 14b form wall surface abutment plate portions 14c that are bifurcated. As shown in FIG. 7, the first waterstop material S1 is bent into a rectangular shape while housed in the waterstop material housing rail 14, and is adhesively fixed to the back surface of the fixing flange plate 2 using double-sided tape 75 (see FIG. 10).

[0031] A number of anchor nuts 76 are embedded at predetermined intervals in the portion of the exterior wall W on the side of the inner wall surface 74 where the second water-stopping material S2 is disposed. With the sleeve body 1 inserted into the installation opening H of the exterior wall W from the indoor side, the fixing flange plate 2 is placed facing the inner wall surface 74, so that the water-stopping material storage rail 14, which is adhesively fixed to the back side of the fixing flange plate 2, is tightly attached to the inner wall surface 74. In this state, as shown in FIG. 10 , when a fixing bolt 77 is driven toward the anchor nut 76 from the indoor side, passing through the fixing flange plate 2, the top plate portion 14a of the water-stopping material storage rail 14, and the second water-stopping material S2, the side plate portions 14b and the bifurcated wall-contacting plate portions 14c of the water-stopping material storage rail 14 and the second water-stopping material S2 inside are significantly deformed, and the fixing bolt 77 is pressed into the anchor nut 76. As a result, the fixing flange plate 2 is fixed to the inner wall surface 74 of the outer wall W via multiple sets of anchor nuts 76 and fixing bolts 77. In Figures 8 and 10, 2a denotes fixing bolt insertion holes formed in the fixing flange plate 2.

[0032] In the example, "Kuniseal C-31" manufactured by Kunimine Kogyo Co., Ltd. was used as the second water-stopping material S2, which has the property of preventing water seepage by absorbing infiltrating water and swelling. As described above, the portion of the water-stopping material receiving rail 14 excluding the top plate portion 14a is significantly deformed, and the second water-stopping material S2 inside it is significantly compressed and deformed, fitting closely to the irregularities of the inner wall surface 74 of the exterior wall W. As a result, the waterproof sleeve A installed in the installation opening H of the exterior wall W not only achieves "primary water-stopping" by the seal pieces 62 of the first water-stopping material S1 elastically contacting the inner surfaces 71-73 of the installation opening H, but also achieves "secondary water-stopping" by the square frame-shaped second water-stopping material S2 on the indoor side of the exterior wall W being compressed and deformed, fitting closely to the inner wall surface 74 of the exterior wall W, thereby achieving a double-layered water-stop structure. Furthermore, if water that has penetrated the interior due to incomplete "primary watertightness" reaches the second watertight material S2, the second watertight material S2 will absorb the water and swell to stop the water, thereby dramatically improving watertight performance. The swelling of the second watertight material S2 due to water absorption disappears as it dries, and the second watertight material S2 returns to a state close to its original shape, but the repeated swelling and drying allows the watertight performance to be maintained for a long period of time.

[0033] 4 to 7 and 11, a fixed water-stop mechanism K is provided in the form of a square frame on the surface of the fixed flange plate 2 in a portion facing the accommodation space 3 of the sleeve main body 1, for fixing the connecting tube B inserted into the accommodation space 3 to the entire rainproof sleeve A in a waterproof structure. The fixed water-stop mechanism K is made up of a total of four water-stop material housing frames 22 with a generally U-shaped cross section that are fixed to the fixed flange plate 2 so that, in cooperation with the fixed flange plate 2 of the rainproof sleeve A, a water-stop material protrusion arrangement opening 21 is formed around the entire periphery on the side of the sleeve main body 1 facing the accommodation space 3, a slider 23 to which a fixed water-stop material S3 is integrally attached on the side of the fixed flange plate 2 and that is disposed inside each of the water-stop material housing frames 22 so as to be slidable in a direction perpendicular to the fixed flange plate 2, and a number of pressing bolts 25 that are screwed into nuts 24 that are integrally welded to the top plate portion 22a of each of the water-stop material housing frames 22. 6, the four waterstop material housing frames 22 are assembled into a rectangular frame shape, and the fixed waterstop material S3, like the first waterstop S1, is housed in the waterstop material housing frame 22 in a state where a single member is formed into a rectangular frame shape. A flat fixing plate 26 is provided integrally with the waterstop material housing frame 22 on the side opposite the waterstop material protrusion placement opening 21, and this fixing plate 26 is fixed to the fixed flange plate 2 via a watertight rivet 27, thereby fixing the waterstop material housing frame 22 to the fixed flange plate 2. A forward movement end limiting plate 23a that limits the forward movement end of the slide is provided on the side of the slide body 23 that is slidably housed in the waterstop material housing frame 22 opposite the waterstop material protrusion placement opening 21 provided in the waterstop material housing frame 22. In addition, when a pressing force is applied to the top plate portion 23b of the slide body 23 by the pressing bolt 25, the component force causes the entire slide body 23 to tilt slightly toward the water-stop material protrusion placement opening 21 inside the water-stop material storage frame body 22.

[0034] 11, the fixed water-stopping material S3 is molded from flame-retardant sponge rubber, and in its original shape when no compressive force is applied, a pressing protrusion 29 is formed integrally on the side of a main body 28 having a substantially rectangular cross section, on the side of the water-stopping material protrusion-arrangement opening 21. The main body 28 of the fixed water-stopping material S3 is housed and arranged inside the water-stopping material housing frame 22, and the pressing protrusion 29 is arranged in a state where it protrudes outward from the water-stopping material protrusion-arrangement opening 21 of the water-stopping material housing frame 22. When a pressing force perpendicular to the fixed flange plate 2 acts on the slide body 23 by the pressing bolt 25, the slide body 23 moves slightly to the side of the water-stop material protrusion arrangement opening 21 to the maximum extent, and the main body 28 of the fixed water-stop material S3 is compressed and deformed, reducing the dimension in the compression direction and attempting to expand along a direction parallel to the fixed flange plate 2 which is perpendicular to the compression direction. However, both ends of the expansion direction are restricted by the forward end restricting plate portion 23a and the connecting tube B, preventing this expansion, and the entire fixed water-stop material S3 is compressed along a direction parallel to the fixed flange plate 2. In other words, the portion of the fixed water-stop material S3 excluding the extrusion protrusion 29 is compressed in a direction perpendicular to the fixed flange plate 2, and the extrusion protrusion 29 and approximately half of the portion of the main body 28 on the side of the fixed flange plate 2 that is connected to the extrusion protrusion 29 is compressed along a direction parallel to the fixed flange plate 2, and as a result, the outer surface of the connecting tube B is pressed with a pressing force F by the pressing protrusion 29.

[0035] Therefore, on the inside (indoor side) of the exterior wall W, when the slide body 23 slides toward the fixed flange plate 2 due to the rotation of the press bolt 25 and its forward end restricting plate portion 23a abuts against the fixed flange plate 2, the fixed water-stop material S3 attached integrally to the slide body 23 is compressed and deformed in two mutually perpendicular directions as described above, and its pressing protrusion 29 presses against the entire outer surface of the rectangular cylindrical connecting tube main body 51, thereby fixing the connecting tube B in a waterproof structure to the fixed flange plate 2 of the waterproof sleeve A. A flange plate 52 with a step is provided at the indoor side end of the connecting tube main body 51, and driver insertion holes 54 for inserting a driver 78 for rotating the press bolt 25 are provided in the inside part of the step portion 53 of the flange plate 52 in accordance with the arrangement positions of the numerous press bolts 25.

[0036] In this way, the connecting tube B housed in the sleeve main body 1 is fixed and waterproofed by rotating the pressing bolt 25 from a direction perpendicular to the fixed flange plate 2 or the inner wall surface 74, and compressing and deforming a part of the side of the fixed water-stop material S3 where the pressing protrusion 29 is provided along a direction parallel to the inner wall surface 74 of the outer wall W that is perpendicular to the sliding direction of the sliding body 23. Therefore, even after the bathroom wall 81 of the bathroom equipment to be installed on the indoor side has been erected, the connecting tube B in the sleeve main body 1 can be fixed and waterproofed by rotating the pressing bolt 25 from inside the bathroom.

[0037] The waterproof sleeve A and the connecting tube B are installed in the installation opening H of the exterior wall W as follows. First, as shown in FIGS. 9(b) and 9(c), the sealing piece 62 of the first waterproof material S1, which is a sealing piece provided around the entire circumference of the exterior end of the sleeve body 1, is cut to a width corresponding to the distance between the sealing piece 62 and the inner surfaces 71-73 of the installation opening H. In FIG. 9(b), reference numeral 62' denotes a cut piece from which an unnecessary portion of the sealing piece 62 of the first waterproof material S1 has been removed. When the sleeve body 1 of the waterproof sleeve A is inserted into the installation opening H from the interior side in this state, the leading ends of the first waterproof materials S1 cut to the predetermined width on each side are elastically deformed and come into elastic contact with the inner surfaces 71-73. In this state, the entire waterproof sleeve A is temporarily installed against the lower inner surface 73 of the installation opening H via a pair of support bolts 12 provided in a portion of the sleeve body 1 corresponding to the lower inner surface 73.

[0038] Anchor nuts 76 are previously embedded by concrete pouring in portions of the rainproof sleeve A that correspond to the fixing bolt insertion holes 2a of the fixing flange plate 2 on the inner wall surface 74 of the exterior wall W. By temporarily installing the rainproof sleeve A in the installation opening H as described above, the square frame-shaped second waterstop material S2 provided on the back surface of the fixing flange plate 2 is placed in contact with the inner wall surface 74 of the exterior wall W, as shown in Figures 2 to 4 and 10. In this state, when fixing bolts 77 inserted into the fixing bolt insertion holes 2a of the fixing flange plate 2 are screwed into anchor nuts 76 embedded in the exterior wall W facing the inner wall surface 74, the fixing flange plate 2 is fixed to the inner wall surface 74 of the exterior wall W via the multiple sets of anchor nuts 76 and fixing bolts 77, as shown in Figure 10. When the fixing bolts 77 are screwed in, the side plate portions 14b and the bifurcated abutment plate portions 14c of the water-stopping material storage rail 14, as well as the second water-stopping material S2 stored in the water-stopping material storage rail 14, are deformed as described above, and the bifurcated abutment plate portions 14c and the second water-stopping material S2 adhere to the inner wall surface 74 to seal against the water. At the same time, the numerous fixing bolts 77 are screwed into anchor nuts 76 embedded in the part of the outer wall W facing the inner wall surface 74, thereby fixing the fixing flange plate 2 of the rainproof sleeve A to the inner wall surface 74, and as a result, the entire rainproof sleeve A is fixed to the outer wall W around the installation opening H in a water-stopping structure.

[0039] Therefore, the rainproof sleeve A is waterproofed by a double structure consisting of a ``primary waterproofing'' provided by the first waterproofing material S1 in the form of a sealing piece inside the installation opening H, and a ``secondary waterproofing'' provided by the second waterproofing material S2 on the inner wall surface 74.Furthermore, since the second waterproofing material S2 has the property of absorbing water and swelling, even if water seeps in through the first waterproofing material S1, the water will be absorbed by the second waterproofing material S2, thereby achieving high waterproofing.

[0040] As shown in Figures 3 to 6, a bathroom wall opening 82 of the same size is formed in a portion of the bathroom wall 81, which is positioned a predetermined distance from the inner wall surface 74 of the outer wall W, corresponding to the installation opening H. If the bathroom wall 81 has already been installed before inserting the connecting tube B into the sleeve body 1 of the waterproof sleeve A, the connecting tube B is inserted from the inside of the bathroom wall opening 82, and the stepped portion 53 of the flange plate 52 of the connecting tube B is fitted into the bathroom wall opening 82, thereby temporarily holding the connecting tube B against the bathroom wall 81. If the bathroom wall 81 has not yet been installed when installing the connecting tube B, the insertion length of the connecting tube body 51 into the sleeve body 1 is determined by some means, and the connecting tube body 51 inserted into the sleeve body 1 is temporarily held in place by the pressing protrusion 29 of the fixed water-stopping material S3 located on the lower side (the side corresponding to the lower inner surface 73 of the installation opening H). In Figure 6, 83 and 84 represent the bathroom and bathtub, respectively.

[0041] 3 and 11, when a driver 78 inserted through the driver insertion hole 54 of the bathroom wall 81 is used to rotate each of the pressing bolts 25 on the top plate 22a of the water-stopping material housing frame 22 from inside the bathroom wall 81, the slide body 23 inside the water-stopping material housing frame 22 slides toward the fixed flange plate 2, and the main body 28 of the fixed water-stopping body S3 integral with the slide body 23 is compressed in a direction perpendicular to the fixed flange plate 2 until the forward end limiting plate 23a abuts against the fixed flange plate 2. As a result, approximately half of the main body 28 on the side of the fixed flange plate 2 and the pressing protrusion 29 protruding outward from the water-stopping material protrusion arrangement opening 21 attempt to expand in a direction parallel to the fixed flange plate 2, compressing this portion, and the pressing protrusion 29 presses the entire circumference of the connecting tube main body 51 with an excessive pressing force F. With this fixed watertight structure, the connecting tube B is stably fixed in a watertight state to the rainproof sleeve A at the connecting tube main body 51 in cooperation with the structure in which the step portion 53 of the flange plate 52 is fitted into the bathroom wall opening 82.

[0042] Next, various modifications of the above-described embodiment of the present invention will be described. Fig. 12 is a cross-sectional view of a modified fixed water-stop mechanism K', in which the water-stop material housing frame 30 is composed of four first brackets 31 with an L-shaped cross section and fixed to the connecting tube body 51 of the rectangular, short cylindrical shape of the connecting tube B at the portions near the flange plates 52 of the first brackets 31, four second brackets 32 with the same L-shaped cross section and integrally attached to the top plates 31a of the first brackets 31, four sliders 34 housed in housing spaces 33 formed in the first and second brackets 31, 32 and slidable in a direction parallel to the fixed flange plates 2, and a number of pressing bolts 37 threadedly engaged with nuts 36 fixed to an overlapping top plate portion 35 formed by the overlapping top plate portion 31a of the first brackets 31 and the upright plate portion 32a of the second brackets 32.

[0043] A fixed water-stop material S3' is attached integrally to the connecting tube main body 51 side of the sliding body 34, and a part of the fixed water-stop material S3' protrudes from the fixed water-stop material protrusion opening 30a on the water-stop material housing frame body 30 side of the housing space 33 while abutting against the connecting tube main body 51. The top plate portion 34a of the sliding body 34 has an inclined surface ( Tapered surface) Therefore, when the pressing bolt 37 is rotated from inside the bathroom 83 with a screwdriver 78 and the tip of the pressing bolt 37 presses the top plate portion 34a of the sliding body 34, which is formed on an inclined surface, a component of the pressing force acts to slide the sliding body 34 toward the connecting tube main body 51, compressing the fixed water-stop material S3', whose tip abuts against the connecting tube main body 51, and pressing the outer surface of the connecting tube main body 51 with a pressing force F' equivalent to the component of the pressing force. As a result, the connecting tube B is fixed to the waterproof sleeve A in a waterproof structure.

[0044] Next, in cases where the size of the installation opening H is larger than the standard size and therefore the second waterstop material S2 cannot be placed on the inner wall surface 74, as shown in Fig. 13, an expanded fixed flange plate 41 having a reinforcing plate portion 41b provided at one end in the width direction can be used to place the second waterstop material S2 on the inner wall surface 74. That is, by placing the expanded fixed flange plate 41 on the outside in the width direction of the fixed flange plate 2 and connecting the reinforcing plate portions 8b, 41b with a plurality of connecting screws 42, the portion of the fixed flange plate 2 where the width dimension is insufficient can be expanded, and the first waterstop material S1 can be placed in the expanded portion of the expanded fixed flange plate 41, thereby making it possible to install the rainproof sleeve A in the installation opening H which is larger than the standard size.

[0045] Furthermore, because the seal pieces 62 of the first water-stopping material S1 are designed to elastically deform and make contact with the inner surfaces 71-73 of the installation opening H to stop water, the width of the seal pieces 62 cannot be made wider than a certain limit relative to their thickness. Therefore, if the installation opening H is larger than the standard size, the tip of the seal piece 62 may not be able to reach the inner surfaces 71-73, resulting in failure to stop water. In this case, as shown in Figures 9(d) and 13, the width T2 of the water-stopping material attachment portion 7', which is integrally formed as a flange on the outside of the outdoor end of the sleeve body 1, can be made wider than the width T1 of the standard size, thereby allowing the tip of the seal piece 62 of the first water-stopping material S1 to make elastic contact with the inner surfaces 71-73. [Explanation of symbols]

[0046] 1: Sleeve body 2: Fixed flange plate 7:Water-stopping material attachment part 14:Waterstop material storage rail 14a: Top plate 14b: Side plate part 14c: Contact plate part 15: Second waterproofing material storage space 21:Water stop material protrusion placement opening 22: Water-stopping material housing frame 23: Slide body 23b: Top plate of the slide body 25: Press bolt 28: Main body of fixed water stop material 29: Pressurized protrusion of fixed water-stop material 41: Widened fixed flange plate 61: Attached portion of first waterproofing material 62: First waterproof seal piece A: Rainproof sleeve B: Connecting tube E: Electric kiln (hot water supply equipment) H: Installation opening K: Fixed water stop mechanism S1: First waterproof material S2: Second waterproofing material S3: Fixed water stop material T1, T2: Width of the waterproof material attachment part W: Exterior wall

Claims

1. An installation structure for installing a water heating system for supplying hot water to a bathtub in an apartment building by repairing an existing opening with a square cross section provided in an exterior wall of the apartment building and installing a waterproof sleeve with a dry structure, The rainproof sleeve has a rectangular, short cylindrical sleeve body with a fixed flange plate provided around the entire circumference of the indoor end, and a sealing piece-like first water-stopping material that elastically contacts the inner circumferential surface of the installation opening and stops water from entering the sleeve body around the entire circumference of the outdoor end. When the sleeve body of the waterproof sleeve is inserted into the installation opening from the indoor side, the first waterproof material is in elastic contact with the inner circumferential surface of the installation opening, A rainproof sleeve installation structure for a hot water equipment installation opening, characterized in that the fixing flange plate is fixed to the inner wall surface of the outer wall with a square frame-shaped second water-stopping material interposed between the fixing flange plate and the inner wall surface of the outer wall by a plurality of fixing members.

2. The second water-stopping material has a property of preventing water from entering by absorbing the infiltrating water and swelling, and the second water-stopping material is accommodated in a deformable water-stopping material accommodation rail, The water-stopping material storage rail has a space surrounded by a top plate portion and both side plate portions which serves as a storage space for the second water-stopping material, and the wall abutment portions of the both side plate portions are formed in a bifurcated shape.This is a rainproof sleeve installation structure for a hot water supply equipment installation opening as described in claim 1.

3. The rainproof sleeve installation structure at the hot water supply equipment installation opening described in claim 1, characterized in that the part of the fixed flange plate facing the storage space of the sleeve body is equipped with a fixed water-stopping material that waterproofs the square cylindrical connecting tube that is inserted into the storage space of the sleeve body and fixes it to the rainproof sleeve, and a fixed water-stopping mechanism is formed around the entire circumference of the fixed water-stopping material, which deforms and moves all or part of it laterally inward due to compressive deformation of the fixed water-stopping material and presses it against the outer surface of the connecting tube.

4. The fixed water-stop mechanism is a rectangular frame-shaped water-stop material housing frame fixed to a portion of the fixed flange plate of the rainproof sleeve facing the connecting tube housed in the sleeve body so that a water-stop material protrusion arrangement opening is formed around the entire periphery on the side facing the connecting tube in cooperation with the fixed flange plate, A rainproof sleeve installation structure for a hot water supply equipment installation opening as described in claim 3, characterized in that inside the water-stopping material storage frame body, a sliding body to which a fixed water-stopping material is integrally attached on the side of the fixed flange plate is arranged so as to be slidable in a direction perpendicular to the fixed flange plate.

5. The fixed water stop mechanism is a rectangular frame-shaped water stop material housing frame fixed to a portion of the fixed flange plate of the rainproof sleeve that faces the housing space of the sleeve body so that a fixed water stop material protrusion opening is formed around the entire periphery on the side facing the housing space in cooperation with the fixed flange plate, a fixed water-stopping material is integrally attached to the sleeve body side of the slider housed in the water-stopping material housing frame so as to be slidable in a direction parallel to the fixed flange plate, with a portion of the fixed water-stopping material protruding from the fixed water-stopping material protruding opening; A rainproof sleeve installation structure for a hot water equipment installation opening as described in claim 3, characterized in that the top plate portion of the sliding body on the side opposite to the side on which the fixed water-stopping material is attached is formed into a tapered surface so that the sliding body moves slightly toward the sleeve main body due to the pressing force acting on the top plate portion.

6. A rainproof sleeve installation structure for a hot water supply equipment installation opening described in any one of claims 1 to 5, characterized in that the first water-stopping material is configured so that a sealing piece is integrally formed with the attachment portion, and a water-stopping material attachment portion having an attachment groove for attaching the attachment portion of the first water-stopping material is provided on the outer periphery of the outdoor end of the sleeve main body, and the protruding length of the water-stopping material attachment portion is made longer than the standard length, so that it can accommodate the installation opening which is expanded compared to the standard size and enable water to be stopped by the first water-stopping material.

7. A reinforcing plate portion bent at a right angle toward the front side is formed around the entire periphery of the fixed flange plate of the waterproof sleeve, A rainproof sleeve installation structure for a hot water supply equipment installation opening as described in any one of claims 1 to 5, characterized in that in the expanded portion of the installation opening that is expanded relative to the standard size, the fixed flange plate is partially widened, and an expanded fixed flange plate with an L-shaped cross section is connected to the reinforcing plate portion to enable fixing of the sleeve body to the expanded installation opening and waterproofing.

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