Through-pipe structure and construction method for through-pipe structure

Abstract

The invention provides a through-pipe structure that can maintain good waterproofing and insect-repellent effects over a long period of time, and eliminates the need for pre-installed piping. [Solution] The through-pipe structure 1 includes a sleeve member 2 having a cylindrical portion 21 and a flange portion 22, the flange portion 22 being located in the outdoor space OG, and the surface 22a of the flange portion 22 facing the outer wall 100 being separated from the outer wall 100, with the cylindrical portion 21 inserted through the through-port 102a and positioned in the indoor space ON; an insulating material 5 sprayed from at least the outer surface of the cylindrical portion 21 from the outer wall 100; and a pipe 6 inserted through the cylindrical portion 21. By providing the sleeve member 2, the inner caulking material 7 filled between the inner surface of the cylindrical portion 21 and the outer surface of the pipe 6 and the outer caulking material 8 filled between the opposing surface 22a and the outer wall 100 can be made into a square caulking, and the pipe 6 does not need to be installed before spraying the insulating material 5.

Description

Technical Field

[0005]

[0001] The present invention relates to a through-pipe structure provided corresponding to a through portion of an outer wall and a construction method of the through-pipe structure.

Background Art

[0002] In facilities such as office buildings and factories, various pipes may be provided so as to penetrate the outer wall. Here, when the outer wall faces the outdoor space, there is a risk that rainwater and insects may enter through the space between the pipe and the outer wall. Therefore, a through-pipe structure may be provided corresponding to the through portion (hole) of the outer wall, the through-pipe structure including a pipe and a member for preventing the intrusion of rainwater and the like.

[0003] <00000​​​​​​​​​​​​​​​​​Japanese Patent Publication No. 2004-232452 [Patent Document 2] Japanese Patent Publication No. 2023-130981 [Overview of the project] [Problems that the invention aims to solve]

[0006] Incidentally, in order to ensure good thermal insulation while providing a penetration, insulating material such as polyurethane foam is sometimes sprayed onto at least the portion of the exterior wall that extends from the indoor space side to the outer surface of the piping. In this case, the penetration piping structure described in Patent Documents 1 and 2 has the following disadvantages.

[0007] In other words, the construction of through-pipe structures is divided between the building construction side and the equipment construction side. The equipment construction side is responsible for installing the pipes and applying sealant, while the building construction side is responsible for forming the penetrations and spraying insulation. Therefore, before the building construction side sprays the insulation, the equipment construction side needs to install the pipes in advance, that is, perform pre-piping. However, if pre-piping is required, the efficiency of the construction of through-pipe structures may decrease (the work will be completed more quickly).

[0008] The present invention has been made in view of the above circumstances, and its purpose is to provide a through-pipe structure that can maintain good waterproofing and insect-repellent effects for a long period of time, eliminates the need for prior piping, and improves the efficiency of construction. [Means for solving the problem]

[0009] Below, we will describe, in separate sections, each means suitable for achieving the above objectives. Furthermore, we will add notes on the effects and benefits specific to each means as needed.

[0010] Means 1. A through-pipe structure provided in correspondence with the penetration of an exterior wall that demarcates an outdoor space and an indoor space, A sleeve member having a cylindrical portion and a flange portion protruding from the outer circumferential surface of the cylindrical portion, wherein the flange portion is located in an outdoor space, and the surface of the flange portion facing the outer wall is separated from the outer wall, and the cylindrical portion is inserted through the penetration portion and arranged in an indoor space; A fixing member to be attached to the exterior wall in an indoor space, A U-shaped member is placed around the outer circumference of the cylindrical portion and attached to the fixing member, thereby fixing the sleeve member to the outer wall, An insulating material sprayed at least from the side of the exterior wall facing the indoor space to the outer surface of the cylindrical portion, A pipe inserted through the cylindrical portion, An inner caulking material is filled between the inner surface of the cylindrical portion and the outer surface of the piping, A through-pipe structure characterized by comprising an outer caulking material filled between the opposing surface and the outer wall.

[0011] According to the above-described method 1, the inner caulking material filled between the sleeve member (cylindrical portion) and the pipe, and the outer caulking material filled between the sleeve member (opposite surface of the flange portion) and the outer wall, can each be made into square caulking. Therefore, the caulking material can be made less likely to break, and the effect of suppressing the intrusion of rainwater and insects can be maintained for a longer period of time.

[0012] Furthermore, since the sleeve member is fixed to the exterior wall using U-shaped members (for example, U-shaped bolts or U-shaped bands) or fixing members, the fixing of the sleeve member can be made relatively easy, and the cost required for fixing can be reduced.

[0013] Furthermore, since the insulation material is sprayed from the indoor-facing side of the exterior wall to the cylindrical portion of the sleeve member, there is no need to pre-install the piping before spraying the insulation material. Therefore, pre-piping can be avoided, and the efficiency of the construction process can be increased.

[0014] Means 2. The sleeve member has a cylindrical rib portion that protrudes from the portion of the opposing surface that is located on the cylindrical side of the flange portion rather than the outer edge portion of the flange portion, and whose tip surface abuts against the outer wall. The through-pipe structure according to means 1, characterized in that the outer caulking material is filled between the opposing surface and the outer wall while in contact with the rib portion.

[0015] According to the above-described method 2, by abutting the rib portion against the outer wall, the distance between the opposing surface and the outer wall, i.e., the size of the gap filled with the outer caulking material, can be set to a target constant value without any special adjustment of the position of the sleeve member. Therefore, the outer caulking material of the target size can be installed more reliably, and a good waterproof and insect-proof effect can be achieved more easily.

[0016] Furthermore, by positioning the rib section against the exterior wall, the protrusion length of the cylindrical section from the exterior wall in the indoor space can be set to a target value without requiring any special adjustments to the position of the sleeve member. Consequently, the sleeve member can be properly fixed using a U-shaped member or the like, and the insulation material can be sufficiently prevented from entering the cylindrical section during spraying. At the same time, it becomes easier to achieve a very well-balanced and appropriate amount of protrusion of the cylindrical section from the exterior wall so as not to be particularly cumbersome in terms of construction work or installation space.

[0017] Furthermore, since the exterior sealant is installed in contact with three surfaces—the rib section, the opposing surface, and the exterior wall—the waterproofing and insect-repellent effect of the exterior sealant can be further enhanced.

[0018] In addition, the tubular rib section can more effectively seal off insect entry points. This further improves the insect-repellent effect.

[0019] Means 3. The through-pipe structure according to Means 1, characterized in that the end of the cylindrical portion on the indoor space side is positioned beyond the fixing member.

[0020] According to the above means 3, the end of the cylindrical portion is arranged at a position beyond the fixing member. Therefore, when spraying the heat insulating material on the outer periphery of the cylindrical portion, using the fixing member as a guide and spraying the heat insulating material so as not to exceed this fixing member, it is possible to naturally prevent the heat insulating material from entering the cylindrical portion. Thereby, the workability regarding the spraying of the heat insulating material can be improved.

[0021] Means 4. A construction method of a through-pipe structure provided corresponding to a through portion of an outer wall that divides an outdoor space and an indoor space, Using a sleeve member having a cylindrical portion and a flange portion protruding from the outer peripheral surface of the cylindrical portion, with the flange portion located in the outdoor space and the opposing surface of the flange portion with respect to the outer wall being in a state separated from the outer wall, a sleeve member insertion step of inserting the cylindrical portion into the through portion and arranging it in the indoor space; A fixing member installation step of attaching a predetermined fixing member to the outer wall in the indoor space; A sleeve member fixing step of fixing the sleeve member to the outer wall by hanging a predetermined U-shaped member on the outer periphery of the cylindrical portion and attaching it to the fixing member; A heat insulating material spraying step of spraying a heat insulating material at least from the surface on the indoor space side of the outer wall to the outer peripheral surface of the cylindrical portion; A pipe insertion step of inserting a predetermined pipe into the cylindrical portion; An inner caulking material filling step of filling a caulking material between the inner peripheral surface of the cylindrical portion and the outer peripheral surface of the pipe; An outer caulking material filling step of filling a caulking material between the opposing surface and the outer wall, characterized by including a construction method of a through-pipe structure. <00WW097> According to the above means 4, the same operational effects as those of the above means 1 are achieved.

[0023] Means 5. The sleeve member has a cylindrical rib portion protruding from a portion located on the cylindrical portion side rather than the outer edge portion of the flange portion among the opposing surfaces, The method for constructing a through-pipe structure according to means 4, characterized in that, in the sleeve member fixing step, the sleeve member is fixed to the outer wall with the tip surface of the rib portion abutting against the outer wall.

[0024] According to the above means 5, the same effects as those of means 2 are achieved.

[0025] Means 6. A method for constructing a through-pipe structure according to Means 4, characterized in that the sleeve member insertion step and the fixing member installation step are performed such that the end of the cylindrical portion on the indoor space side is positioned beyond the fixing member.

[0026] According to the above means 6, the same effects as those of means 3 are achieved.

[0027] Furthermore, the technical aspects related to the above means may be combined as appropriate. For example, the technical aspects related to means 2 may be combined with the technical aspects related to means 3. [Brief explanation of the drawing]

[0028] [Figure 1] This is a perspective view of the through-pipe structure and other elements as seen from the indoor space. [Figure 2] This is a perspective view of the through-pipe structure and other elements as seen from the outdoor space. [Figure 3] This is a cross-sectional view along the JJ line in Figure 1. [Figure 4] This is a perspective view showing the sleeve member as seen from the tip side of the cylindrical section. [Figure 5] This is a perspective view showing the sleeve member as seen from the base end of the cylindrical portion. [Figure 6] This is a side view of the sleeve component. [Figure 7] This is a flowchart showing the construction method for through-pipe structures. [Figure 8] This is a perspective view showing openings and other features in the exterior wall. [Figure 9] This is a perspective view showing an exterior wall consisting of the main exterior wall body and panels. [Figure 10] This is a perspective view showing a sleeve member inserted into a penetration, as seen from the indoor space side. [Figure 11] This is a perspective view showing a sleeve member inserted into a penetration, as seen from the outdoor space side. [Figure 12] Figure 10 is a cross-sectional view along the KK line. [Figure 13] This is a perspective view showing fixing components and U-bolts used to secure piping to the exterior wall. [Figure 14] This is a perspective view showing insulation material sprayed onto panels, etc. [Figure 15] This is a perspective view showing piping and other components inserted into the cylindrical section. [Figure 16] This is a perspective view showing interior and exterior caulking materials. [Figure 17] This is a cross-sectional view showing a through-pipe structure without insulation material in another embodiment. [Modes for carrying out the invention]

[0029] The following describes one embodiment with reference to the drawings. The through-pipe structure is provided in accordance with the penetration of the exterior wall. First, before describing the through-pipe structure, the exterior wall will be described.

[0030] As shown in Figure 9, the exterior wall 100 demarcates the outdoor space OG and the indoor space ON, that is, it forms a primary insect-proof compartment, and has a predetermined thermal insulation performance. The exterior wall 100 comprises an exterior wall body 101 and a panel 102.

[0031] The exterior wall body 101 is the main component of the exterior wall 100 and comprises a frame 101a and a wall material 101b fixed to the frame 101a. The wall material 101b is equipped with a predetermined insulation panel (not shown) to ensure the thermal insulation performance of the exterior wall 100.

[0032] Panel 102 has a thin plate portion with a through portion 102a (through hole) formed in the center. Panel 102 is attached to the outer wall body 101 so as to close the opening 101c (see Figure 8) of the outer wall body 101 surrounded by the frame 101a. In this embodiment, the through portion 102a of panel 102 corresponds to the "through portion of the outer wall". The through portion 102a is circular in shape and has an inner diameter that is slightly larger than the outer diameter of the cylindrical portion 21 of the sleeve member 2, which will be described later.

[0033] Next, the through-pipe structure 1 will be described with reference to Figures 1 to 3. Figure 1 is a perspective view of the through-pipe structure 1 as seen from the indoor space ON side, and Figure 2 is a perspective view of the through-pipe structure 1 as seen from the outdoor space OG side. Figure 3 is a cross-sectional view taken along line JJ in Figure 1. The through-pipe structure 1 comprises a sleeve member 2, a fixing member 3, a U-bolt 4, insulation material 5, piping 6, an inner caulking material 7, an outer caulking material 8, and heat-insulating material 9. In this embodiment, the U-bolt 4 corresponds to the "U-shaped member".

[0034] The sleeve member 2 is a component that enables the installation of the insulation material 5 without pre-installing the piping 6 (without performing pre-piping), and further enables the use of square caulking (caulking with a square cross-sectional shape) for both caulking materials 7 and 8. As shown in Figures 4 to 6, the sleeve member 2 comprises a cylindrical portion 21, a flange portion 22, and a rib portion 23.

[0035] The cylindrical portion 21 has an inner diameter large enough to allow the pipe 6 and insulation material 9 to pass through, and is positioned from the outdoor space OG to the indoor space ON by being inserted through the penetration portion 102a. The tip of the cylindrical portion 21 positioned in the indoor space ON (the end on the indoor space ON side) is positioned beyond the fixing member 3.

[0036] The flange portion 22 is rectangular in shape, projecting radially outward from the outer circumferential surface of the cylindrical portion 21, and is positioned in the outdoor space OG. The surface 22a of the flange portion 22 facing the outer wall 100 (panel 102) is set away from the outer wall 100 (panel 102), and the outer caulking material 8 is filled between this facing surface 22a and the outer wall 100. The shape of the flange portion 22 can be changed as appropriate; for example, the flange portion 22 may be circular in shape.

[0037] The rib portion 23 is a rectangular cylindrical shape that is slightly smaller than the outer edge shape of the flange portion 22, and protrudes from the portion of the opposing surface 22a of the flange portion 22 that is located on the cylindrical portion 21 side of the outer edge of the flange portion 22. The central axis of the rib portion 23 is configured to coincide with the central axis of the cylindrical portion 21, and the tip surface of the rib portion 23 is a flat surface that is parallel to the flange portion 22 and perpendicular to the central axis of the cylindrical portion 21. Furthermore, the tip surface of this rib portion 23 abuts against the surface of the outdoor space OG on the outer wall 100 (panel 102) along its entire circumference.

[0038] Returning to Figures 1-3, the fixing member 3 and the U-bolt 4 are components that are placed in the indoor space ON, respectively, and are used to fix the sleeve member 2 to the exterior wall 100, so that the sleeve member 2 is supported by the exterior wall 100.

[0039] The fixing member 3 is made of a rod-shaped metal member (for example, an angle iron), and is fixed (for example, screw-fastened) to the exterior wall 100 (frame 101a) in the indoor space ON with its longitudinal direction extending horizontally. The fixing member 3 is positioned so that its longitudinal middle portion is in contact with the cylindrical portion 21 directly below the cylindrical portion 21. The fixing member 3 also has a pair of holes through which both ends of the U-bolt 4 can be inserted.

[0040] The U-bolt 4 is a U-shaped bolt with male threads (not shown) formed at both ends. The U-bolt 4 is attached to the fixing member 3 by having its middle portion (curved portion) hooked onto the outer circumference of the cylindrical portion 21, and both ends being inserted through the holes in the fixing member 3, with predetermined nuts screwed onto the male threads. As a result, the cylindrical portion 21 is sandwiched between the U-bolt 4 and the fixing member 3, and the sleeve member 2 is fixed to the outer wall 100 (frame 101a) via the fixing member 3 and the U-bolt 4.

[0041] The insulation material 5 is intended to maintain sufficiently good thermal insulation performance between the two spaces OG and ON, even while providing the penetration portion 102a and the panel 102. The insulation material 5 is made of, for example, urethane foam, and is sprayed from at least the surface of the exterior wall 100 (panel 102) on the ON side of the indoor space to the outer surface of the cylindrical portion 21. In this embodiment, the insulation material 5 is sprayed from the frame 101a to the outer surface of the cylindrical portion 21, taking into consideration its heat resistance. Therefore, the insulation material 5 is sprayed over the entire surface of the ON side of the panel 102, and is provided so as to cover the entire opening 101c.

[0042] The pipe 6 is a tube for guiding a fluid (gas or liquid) from one of the two spaces OG and ON to the other. The pipe 6 is inserted into the cylindrical section 21, and at least the portion inserted into the cylindrical section 21 is in the shape of a straight pipe.

[0043] The inner sealant 7 is filled between the inner surface of the cylindrical portion 21 and the outer surface of the pipe 6, and is intended to prevent rainwater and insects from entering between the sleeve member 2 and the pipe 6. The inner sealant 7 is filled around the entire circumference between the inner surface of the base end side (outdoor space OG side) of the cylindrical portion 21 and the outer surface of the pipe 6, and is in the form of a square sealant that contacts the inner surface of the cylindrical portion 21 and the outer surface of the pipe 6.

[0044] The outer caulking material 8 is filled between the opposing surface 22a of the flange portion 22 and the outer wall 100 (panel 102), and is intended to prevent rainwater and insects from entering between the sleeve member 2 and the outer wall 100. The outer caulking material 8 is filled around the entire circumference between the opposing surface 22a and the outer wall 100 (panel 102), and is a square caulking that contacts three surfaces: the opposing surface 22a, the outer wall 100 (panel 102), and the rib portion 23. Each caulking material 7 and 8 is, for example, a silicone-based caulking material (sealant), and hardens over time.

[0045] The insulation material 9 is for keeping the fluid flowing through the pipe 6 at a consistent temperature. The insulation material 9 is made of, for example, glass wool and is wrapped around the pipe 6. In this embodiment, the insulation material 9 is separated from the inner sealant 7.

[0046] Furthermore, in this embodiment, a filler material 11, such as urethane foam, is filled between the insulating material 9 and the cylindrical portion 21 to fill the gap between them. However, if there is no gap between the insulating material 9 and the cylindrical portion 21, the filler material 11 is not necessary.

[0047] Furthermore, in order to improve waterproofing and insect-repellent effects and to obtain a good appearance, a predetermined tape 12 (for example, ALGC tape) is applied to the portion from the tip end (indoor space ON side) of the cylindrical portion 21 to the insulation material 9, and a predetermined racking cover 13 is applied to the portion from the base end (outdoor space OG side) of the cylindrical portion 21 to the insulation material 9.

[0048] Next, the construction method for the through-pipe structure 1 described above will be explained with reference to Figure 7. First, in the opening formation process of step S1, an opening 101c is made in the outer wall body 101 (see Figure 8). The opening formation process is carried out by the building construction side. Alternatively, an outer wall 100 with the opening 101c already formed may be provided.

[0049] Next, in the panel installation process of step S2, panel 102 is installed so as to close the opening 101c (see Figure 9). A penetration 102a is pre-formed in panel 102. The panel installation process is carried out by the construction workers.

[0050] Subsequently, in the sleeve member insertion process of step S3, the sleeve member 2 is inserted through the penetration portion 102a. More specifically, with the flange portion 22 positioned in the outdoor space OG and the opposing surface 22a of the flange portion 22 away from the outer wall 100 (panel 102), the cylindrical portion 21 is inserted through the penetration portion 102a and positioned in the indoor space ON (see Figures 10-12). In this embodiment, by simply abutting the tip surface of the rib portion 23 against the outer wall 100 (panel 102), the distance between the opposing surface 22a and the outer wall 100 (panel 102), i.e., the size of the gap filled with the outer caulking material 8, becomes a target constant value without any special adjustment of the position of the sleeve member 2. Furthermore, by abutting the tip surface of the rib portion 23 against the exterior wall 100 (panel 102), the protrusion length of the cylindrical portion 21 relative to the exterior wall 100 (panel 102) in the indoor space ON becomes a constant value that is appropriate in terms of spraying the insulation material 5 and fixing the sleeve member 2 to the fixing member 3. The sleeve member insertion process is performed by the equipment installation side.

[0051] In the subsequent step S4, the fixing member installation process, the fixing member 3 is attached to the exterior wall 100 (frame 101a) with the indoor space ON. At this time, the fixing member 3 is attached to the exterior wall 100 such that the longitudinal middle portion is located directly below the cylindrical portion 21. Note that both steps S3 and S4 are performed such that the tip end (indoor space ON side) of the cylindrical portion 21 is positioned beyond the fixing member 3. The fixing member installation process is performed by the equipment installation side.

[0052] Furthermore, the fixing member installation step in step S4 may be performed prior to the sleeve member insertion step in step S3. That is, the fixing member 3 may be attached to the outer wall 100 in advance before inserting the sleeve member 2 into the penetration 102a.

[0053] Next, in step S5, the sleeve member 2 is fixed to the outer wall 100. More specifically, both ends of the U-bolt 4 are inserted through the holes in the fixing member 3, and the middle portion of the U-bolt 4 is placed around the outer circumference of the cylindrical portion 21. Then, a predetermined nut (not shown) is screwed onto the male thread of the U-bolt 4, thereby sandwiching the sleeve member 2 between the fixing member 3 and the U-bolt 4 (see Figure 13). As a result, the sleeve member 2 is fixed to the outer wall 100 via the fixing member 3 and the U-bolt 4. The sleeve member fixing process is performed by the equipment installation side. Note that the fixing of the sleeve member 2 to the outer wall 100 is performed with the tip surface of the rib portion 23 abutting against the outer wall 100 (panel 102).

[0054] Next, in the insulation spraying process of step S6, the insulation material 5 is sprayed from at least the side of the exterior wall 100 (panel 102) facing the indoor space ON to the outer surface of the cylindrical portion 21 (in this embodiment, from the frame 101a to the outer surface of the cylindrical portion 21) (see Figure 14). The insulation spraying process is carried out by the construction workers.

[0055] Subsequently, in the pipe insertion process of step S7, the pipe 6 is inserted into the cylindrical section 21 (see Figure 15). The pipe insertion process is performed by the equipment installation side. The pipe 6 inserted into the cylindrical section 21 is supported by support members (not shown).

[0056] Next, in step S8, the inner sealant filling process, the inner sealant 7 is filled between the inner circumferential surface of the cylindrical portion 21 and the outer circumferential surface of the pipe 6, and in step S9, the outer sealant filling process, the outer sealant 8 is filled between the opposing surface 22a and the outer wall 100 (panel 102) (see Figure 16). Both steps S8 and S9 are performed by the equipment installation side. The order in which both steps are performed, that is, the order in which the sealants 7 and 8 are filled, may be changed as appropriate.

[0057] Subsequently, in step S10, the insulation material installation process, the insulation material 9 is wrapped around the outer circumference of the pipe 6, and in step S11, the gap filling process, the filler material 11 is filled between the pipe 6 and the insulation material 9. Finally, in step S12, the finishing process, tape 12 and racking cover 13 are applied to the area from the cylindrical section 21 to the insulation material 9, thereby completing the construction of the through-pipe structure 1. Each of the steps S10 to S12 is carried out by the equipment installation company.

[0058] As described in detail above, according to this embodiment, the inner caulking material 7 filled between the sleeve member 2 (cylindrical portion 21) and the pipe 6, and the outer caulking material 8 filled between the sleeve member 2 (opposing surface 22a) and the outer wall 100 can each be made into square caulking. Therefore, the caulking materials 7 and 8 can be made less likely to break, and the effect of suppressing the intrusion of rainwater and insects can be maintained for a longer period of time.

[0059] Furthermore, since the sleeve member 2 is fixed to the exterior wall 100 using U-shaped bolts 4 and fixing members 3, the fixing of the sleeve member 2 can be made relatively easy, and the cost required for fixing can be reduced.

[0060] Furthermore, since the insulation material 5 is sprayed from the ON-side surface of the exterior wall 100 to the cylindrical portion 21 of the sleeve member 2, it is not necessary to pre-install the piping 6 before spraying the insulation material 5. Therefore, pre-piping can be avoided, and the efficiency of the construction can be increased.

[0061] In addition, by positioning the rib portion 23 against the outer wall 100, the distance between the opposing surface 22a and the outer wall 100, i.e., the size of the gap filled with the outer caulking material 8, can be set to a target constant value without any special adjustment of the position of the sleeve member 2. Therefore, the outer caulking material 8 of the target size can be applied more reliably, and a good waterproof and insect-proof effect can be achieved more easily.

[0062] In addition, by positioning the rib portion 23 against the exterior wall 100, the protrusion length of the cylindrical portion 21 from the exterior wall 100 in the indoor space ON can be set to a target constant value without any special adjustment of the position of the sleeve member 2. Therefore, the sleeve member 2 can be properly fixed using U-bolts 4, etc., and the insulation material 5 can be sufficiently prevented from entering the cylindrical portion 21 during spraying. At the same time, it becomes easier to set the amount of protrusion of the cylindrical portion 21 from the exterior wall 100 to be very well balanced and appropriate so as not to be particularly cumbersome in terms of construction work or installation space.

[0063] Furthermore, since the outer caulking material 8 is provided in contact with three surfaces: the rib portion 23, the opposing surface 22a, and the outer wall 100, the waterproofing and insect-repellent effect of the outer caulking material 8 can be further enhanced.

[0064] In addition, the cylindrical rib section 23 can more effectively close off the insect entry route. This further improves the insect-repellent effect.

[0065] Furthermore, since the tip of the cylindrical portion 21 is positioned beyond the fixing member 3, when spraying the heat insulating material 5 onto the outer circumference of the cylindrical portion 21, the fixing member 3 can be used as a guide, and by spraying the heat insulating material 5 to an extent that does not exceed the fixing member 3, it is possible to naturally prevent the heat insulating material 5 from entering the cylindrical portion 21. This improves the workability of spraying the heat insulating material 5.

[0066] Furthermore, the embodiment is not limited to the description above, and may be implemented as follows, for example. Of course, other applications and modifications not exemplified below are also possible.

[0067] (a) In the above embodiment, the exterior wall 100 comprises an exterior wall body 101 and a panel 102, and the "penetration of the exterior wall" is formed by the penetration of the panel 102. In contrast, the exterior wall 100 may not have a panel 102, in which case the "penetration of the exterior wall" may be formed by a through hole directly provided in the exterior wall body 101.

[0068] (b) In the above embodiment, the heat-insulating material 9 is provided, but as shown in Figure 17, a configuration without the heat-insulating material 9 may also be used.

[0069] (c) In the above embodiment, a U-shaped bolt 4 is used as the "U-shaped member," but other U-shaped members such as a U-shaped band (a U-shaped band with male threaded portions at both ends) may also be used as the "U-shaped member." [Explanation of Symbols]

[0070] 1...Through-pipe structure, 2...Sleeve member, 3...Fixing member, 4...U-shaped member (U-bolt), 5...Insulation material, 6...Piping, 7...Inner caulking material, 8...Outer caulking material, 21...Cylindrical section, 22...Flange section, 22a...Opposite surface, 23...Rib section, 100...Exterior wall, 102a...Through-hole section, OG...Outdoor space, ON...Indoor space.

Claims

1. A through-pipe structure provided in accordance with the penetrations in the exterior wall that demarcate outdoor and indoor spaces, A sleeve member having a cylindrical portion and a flange portion protruding from the outer circumferential surface of the cylindrical portion, wherein the flange portion is located in an outdoor space, and the surface of the flange portion facing the outer wall is separated from the outer wall, and the cylindrical portion is inserted through the penetration portion and arranged in an indoor space; A fixing member to be attached to the exterior wall in an indoor space, A U-shaped member is placed around the outer circumference of the cylindrical portion and attached to the fixing member, thereby fixing the sleeve member to the outer wall, An insulating material sprayed at least from the side of the exterior wall facing the indoor space to the outer surface of the cylindrical portion, A pipe inserted through the cylindrical portion, An inner caulking material is filled between the inner surface of the cylindrical portion and the outer surface of the piping, A through-pipe structure characterized by comprising an outer caulking material filled between the opposing surface and the outer wall.

2. The sleeve member has a cylindrical rib portion that protrudes from the opposing surface, specifically from a portion located on the cylindrical side of the flange portion rather than the outer edge of the flange portion, with its tip surface abutting against the outer wall. The through-pipe structure according to claim 1, characterized in that the outer caulking material is filled between the opposing surface and the outer wall while in contact with the rib portion.

3. The through-pipe structure according to claim 1, characterized in that the end of the cylindrical portion on the indoor space side is positioned beyond the fixing member.

4. A method for constructing a through-pipe structure provided in a manner corresponding to a penetration in an exterior wall that demarcates an outdoor space and an indoor space, A sleeve member insertion step involves using a sleeve member having a cylindrical portion and a flange portion protruding from the outer surface of the cylindrical portion, wherein the flange portion is located in the outdoor space, and the surface of the flange portion facing the outer wall is separated from the outer wall, and the cylindrical portion is inserted into the penetration portion to be placed in the indoor space; A fixing member installation step involves attaching a predetermined fixing member to the exterior wall in an indoor space, A sleeve member fixing step involves fixing the sleeve member to the outer wall by placing a predetermined U-shaped member over the outer circumference of the cylindrical portion and attaching it to the fixing member, A process of spraying insulation material, in which insulation material is sprayed from at least the surface of the exterior wall facing the indoor space to the outer surface of the cylindrical portion, A pipe insertion step involves inserting a predetermined pipe into the cylindrical portion, An internal caulking material filling step is performed, in which caulking material is filled between the inner circumferential surface of the cylindrical portion and the outer circumferential surface of the piping. A method for constructing a through-pipe structure, characterized by including an external caulking material filling step of filling the space between the opposing surface and the outer wall with caulking material.

5. The sleeve member has a cylindrical rib portion that protrudes from the portion of the opposing surface that is located on the cylindrical side of the flange portion rather than the outer edge portion of the flange portion. The method for constructing a through-pipe structure according to claim 4, characterized in that, in the sleeve member fixing step, the sleeve member is fixed to the outer wall with the tip surface of the rib portion abutting against the outer wall.

6. The method for constructing a through-pipe structure according to claim 4, characterized in that the sleeve member insertion step and the fixing member installation step are performed such that the end of the cylindrical portion on the indoor space side is positioned beyond the fixing member.

Images