Sealing structure, building, and method for manufacturing sealing structure

Abstract

A sealing structure for sealing the interval between a through hole penetrating through a wall between the inside and outside of a building and an arrangement member inserted in the through hole, the sealing structure comprising a sealing member provided across the interval between the through hole and the arrangement member, wherein: the sealing member has a sealing body that is made of a flexible material and that includes an outer circumferential member in contact with the inner circumferential surface of the through hole, an inner circumferential member in contact with the outer circumferential surface of the arrangement member, and a blocking part located between the outer circumferential member and the inner circumferential member, and has a deformation part which is connected to the outer circumferential member or the inner circumferential member at a position closer to the inside of the building than the blocking part is and in which an internal space is formed; an introduction path that is open to the outside of the building and is connected to the internal space is formed in one of the outer circumferential member and the inner circumferential member; and, when the deformation part is deformed by a liquid introduced into the internal space, the deformation part is radially brought into contact with the other of the outer circumferential member and the inner circumferential member.

Description

Seal structure, building, and method for manufacturing seal structure

[0001] This application claims priority to Japanese Patent Application No. 2024-052968, filed on March 28, 2024, the contents of which are incorporated herein by reference.

[0002] A through-hole penetrating the inside and outside of a building is formed in a structure such as a wall portion that constitutes the outer wall of a building, etc. Inserting an installation member through this through-hole enables supply and discharge of fluids, etc. from the outside of the building to the inside, or from the inside to the outside. A seal structure is formed between the through-hole and the installation member to seal the gap between the inner wall of the through-hole and the outer wall of the piping, in order to ensure waterproofing both indoors and outdoors.

[0003] For example, Patent Document 1 discloses a sealing structure that includes a wall portion having a through hole formed on both the indoor and outdoor sides, an installation member that passes through the through hole, and a sealing material that seals the space between the inner surface of the through hole and the installation member.

[0004] JP 2014-25264 A

[0005] In addition to earthquake resistance and watertightness, the above-mentioned sealing structure is also required to be easy to install and remove.

[0006] The present disclosure provides a seal structure, a building, and a method for manufacturing a seal structure that can improve earthquake resistance and watertightness while also improving workability.

[0007] The sealing structure of the present disclosure is a sealing structure that seals between a through hole that penetrates a wall portion between the outdoors and the indoors and an installation member inserted into the through hole, and includes a sealing member provided between the inner peripheral surface of the through hole and the outer peripheral surface of the installation member, the sealing member being made of a flexible material and including a cylindrical outer peripheral member that abuts against the inner peripheral surface of the through hole, a cylindrical inner peripheral member that abuts against the outer peripheral surface of the installation member, and a sealing member that closes the space between the outer peripheral member and the inner peripheral member. and a deforming portion connected to one of the outer circumferential member and the inner circumferential member on the indoor side of the blocking portion, forming an internal space inside, wherein an introduction passage that opens to the outdoors and communicates with the internal space is formed in one of the outer circumferential member and the inner circumferential member, and the deforming portion is configured to abut radially against the other of the outer circumferential member and the inner circumferential member by being deformed by liquid introduced into the internal space via the introduction passage.

[0008] The building of the present disclosure comprises the above-mentioned seal structure, the wall portion, and the installation member.

[0009] A method for manufacturing the seal structure of the present disclosure is a method for manufacturing the above-described seal structure, and includes a step of manufacturing the seal member by additive manufacturing.

[0010] According to the seal structure, building, and method for manufacturing a seal structure disclosed herein, it is possible to improve earthquake resistance and watertightness while also improving workability.

[0011] Fig. 1 is a cross-sectional view showing the overall configuration of a seal structure and a building according to an embodiment of the present disclosure. Fig. 2 is an enlarged view of a main part of Fig. 1. Fig. 3 is a cross-sectional view showing an example of a structure in which a deforming portion of the seal structure according to the first embodiment of the present disclosure is deformed. Fig. 4 is a cross-sectional view showing a seal structure according to a modified example of the first embodiment of the present disclosure. Fig. 5 is a cross-sectional view showing a seal structure according to a second embodiment of the present disclosure.

[0012] First Embodiment Hereinafter, a first embodiment of a seal structure 30 according to the present disclosure and a building 1 to which the seal structure 30 is applied will be described in detail with reference to FIGS. 1 to 3 .

[0013] 1 is a structure that houses various facilities of a nuclear power plant, for example. The building 1 has a wall portion 10 and an installation member 20.

[0014] <Wall> The wall 10 is made of, for example, concrete and constitutes the outer wall of the building 1. The wall 10 separates the building 1 into an outdoor E side (left side in Fig. 1 ) and an indoor I side (right side in Fig. 2 ). The wall 10 has a hole formed therein that penetrates the wall 10 horizontally between the outdoor E side and the indoor I side.

[0015] <Installation Member> The installation member 20 is a tubular member including pipes, ducts, etc. for supplying or discharging various fluids, etc. The installation member 20 extends horizontally so as to be inserted into the through-hole 11. That is, the central axis O of the installation member 20 (hereinafter simply referred to as the axis O) extends horizontally so as to pass through the through-hole 11. Hereinafter, the outdoor E side may be referred to as one axial side, and the indoor I side may be referred to as the other axial side. The outer dimensions of the installation member 20 are set smaller than the inner diameter dimensions of the through-hole 11. In this embodiment, the installation member 20 is disposed within the through-hole 11 and is provided concentrically with the through-hole 11.

[0016] 2 , the seal structure 30 seals between the inner circumferential surface of the through hole 11 and the outer circumferential surface of the installation member 20. The seal structure 30 is provided between the inner circumferential surface of the through hole 11 and the outer circumferential surface of the installation member 20. The seal structure 30 has a seal member 40 and a stopper 70.

[0017] <Sealing member> The sealing member 40 is a member that contributes to earthquake resistance and watertightness of the sealing structure 30. The sealing member 40 is made of a flexible member and has a seal body 50 and a deforming portion 60. The entire sealing member 40 is integrally formed from the same material.

[0018] <Seal Body> The seal body 50 is a part that mainly performs the sealing function in the seal portion. The seal body 50 has an outer peripheral side member 51, an inner peripheral side member 52, and a closing portion 54.

[0019] <Outer-periphery-side member> The outer-periphery-side member 51 is a member that exhibits sealing properties on the outer periphery of the seal body 50. The outer-periphery-side member 51 has a cylindrical shape centered on the axis O. The outer peripheral surface of the outer-periphery-side member 51 contacts the inner peripheral surface of the through hole 11 in the direction of the axis O and in the circumferential direction. The outer peripheral surface of the outer-periphery-side member 51 and the inner peripheral surface of the through hole 11 form an outer-periphery-side seal surface.

[0020] <Inner Circumferential Member> The inner circumferential member 52 is a member that exhibits sealing properties on the inner circumferential side of the seal body 50. The inner circumferential member 52 has a cylindrical shape centered on the axis O. The inner circumferential surface of the inner circumferential member 52 contacts the outer circumferential surface of the installation member 20 in the direction of the axis O and in the circumferential direction. The inner circumferential surface of the inner circumferential member 52 and the outer circumferential surface of the installation member 20 form a sealing surface on the inner circumferential side.

[0021] Note that no adhesive, bolts, or other members are interposed between the outer peripheral member 51 and the through hole 11, and between the inner peripheral member 52 and the mounting member 20. That is, the outer peripheral member 51 is not fixed to the through hole 11, but they are only in contact with each other. Similarly, the inner peripheral member 52 is not fixed to the mounting member 20, but they are only in contact with each other.

[0022] An inlet passage 53 is formed in the inner circumferential member 52. The inlet passage 53 is configured to introduce a liquid from the outdoors E. The end of the inlet passage 53 on the outdoors E side, i.e., the end on one axial side, opens onto a surface of the inner circumferential member 52 facing the outdoors E. The inlet passage 53 opens in a ring shape over the entire circumferential direction of the inner circumferential member 52. The inlet passage 53 extends in a ring shape from the surface of the inner circumferential member 52 on the outdoors E side toward the indoors I side. The end of the inlet passage 53 on the indoors I side, i.e., the end of the inlet passage 53 on the indoors I side, does not open to the indoors I and is closed. In other words, the inlet passage 53 does not penetrate the inner circumferential member 52 in the axial O direction.

[0023] <Closing portion> The blocking portion 54 is a disk-shaped member provided radially so as to close the space between the outer peripheral member 51 and the inner peripheral member 52. The blocking portion 54 is provided across the end of the outer peripheral member 51 on the outdoor E side and the end of the inner peripheral member 52 on the outdoor E side. Because the blocking portion 54 is a portion that is strongly affected by water pressure and the like from the outdoor E, it may be made of a member that is thicker than other portions of the seal body 50, for example.

[0024] <Deformation portion> The deformation portion 60 is a member formed to improve the watertightness of the seal body 50. The deformation portion 60 is provided in an annular space centered on the axis O, which is defined by the outer peripheral member 51, the inner peripheral member 52, and the blocking portion 54. In this embodiment, the deformation portion 60 is connected to the inner peripheral member 52. The deformation portion 60 has a first portion 61 and a second portion 62.

[0025] <First portion> The first portion 61 is an annular member centered on the axis O. The outer peripheral surface of the first portion 61 is connected over the entire circumferential direction to an end portion on the other axial side of the outer peripheral surface of the inner peripheral side member 52. The first portion 61 extends radially outward from the connection point with the inner peripheral side member 52.

[0026] <Second portion> The second portion 62 is a cylindrical member centered on the axis O. An end portion on the other axial side of the outer peripheral surface of the second portion 62 is connected over the entire circumferential direction to a radially outer end portion of the first portion 61. As a result, the second portion 62 extends from the radially outer end portion of the first portion 61 toward one axial side.

[0027] <Internal Space> An internal space 63 is formed inside the deformation portion 60 configured as described above. The internal space 63 is connected to the introduction path 53 so that liquid is introduced through the introduction path 53. The internal space 63 has a first space 63a and a second space 63b. The first space 63a is formed in the first portion 61. The first space 63a is formed over the entire circumferential direction, and its radially inner end is connected to the introduction path 53 over the entire circumferential direction. The second space 63b is formed in the second portion 62 and is connected to the first space 63a. The second space 63b is formed over the entire circumferential direction, and its end on the other axial side is connected to the first space 63a over the entire circumferential direction.

[0028] Here, the space between the outdoor E-side end of the second portion 62 and the blocking portion 54 is defined as a radial space 80. The radial space 80 separates the second portion 62 and the blocking portion 54. The space between the radially inner side of the second portion 62 and the inner circumferential member 52 is defined as an inner space 81. The inner space 81 separates the second portion 62 and the inner circumferential member 52. The space between the radially outer side of the second portion 62 and the outer circumferential member 51 is defined as an outer space 82. The outer space 82 separates the second portion 62 and the outer circumferential member 51. The existence of these three spaces allows deformation of the deformable portion 60. Note that a seal member 40 having such a structure is preferably manufactured by metal additive manufacturing. This allows a seal member 40 with a complex structure to be manufactured easily and accurately.

[0029] <Stopper> The stopper 70 is an annular member centered on the axis O. The stopper 70 is provided to position the seal member 40. The stopper 70 is provided on the inner circumferential surface of the through hole 11 or the outer circumferential surface of the installation member 20, and in this embodiment, is provided so as to contact the inner circumferential surface of the through hole 11. Furthermore, in this embodiment, the stopper 70 is fixed to the inner circumferential surface of the through hole 11 by a member such as an adhesive or a bolt. The stopper 70 is arranged on the other axial side of the seal member 40 in the direction of the axis O, and is provided so as to hold the seal member 40.

[0030] <Effects> The seal structure 30 as described above seals the building 1 by the seal body 50 filling the space between the through hole 11 and the installation member 20. In addition, the mechanism described below can improve the earthquake resistance and watertightness of the building 1 while also improving workability.

[0031] The deforming portion 60 of the seal member 40 according to this embodiment deforms as shown in an example in Fig. 3 when liquid is introduced from the outdoors E by, for example, a tsunami. The liquid is introduced into the internal space 63 through the introduction path 53. At this time, water pressure is applied to the seal body 50, and the second portion 62 deforms so as to abut against the outer peripheral member 51 from the radially inner side.

[0032] Furthermore, the seal member 40 of the seal structure 30 according to this embodiment is configured by being integrally formed from the same material as a whole, which allows the seal body 50 and the deforming portion 60 to be molded integrally, making it easy to manufacture.

[0033] <Earthquake resistance> The seal member 40 according to this embodiment is made of a flexible material. Therefore, when the building 1 vibrates due to an earthquake, the seal member 40 can deform, allowing relative movement between the wall portion 10 and the installation member 20. Because relative movement between the wall portion 10 and the installation member 20 is possible, distortion within the building 1 due to vibration is suppressed, thereby improving the earthquake resistance of the building 1. Focusing on the structure of the seal member 40, the radial space 80, the inner space 81, and the outer space 82 are spaces that can tolerate deformation due to external forces. Similarly, the introduction path 53 and the internal space 63 are spaces that can tolerate deformation due to external forces.

[0034] Furthermore, in the seal structure 30 according to this embodiment, the seal body 50 only contacts the inner circumferential surface of the through hole 11 and the outer circumferential surface of the installation member 20. That is, the seal body 50 is not fixed to the through hole 11 and the installation member 20 by a member such as an adhesive. Therefore, the seal body 50 can move away from and into contact with the through hole 11 and the installation member 20 as appropriate, even in response to vibrations in the radial direction. If the seal body 50 were fixed to the through hole 11 and the installation member 20, such movement could deteriorate the seal structure 30 and the building 1. In this way, the seal structure 30 according to this embodiment can improve the seismic resistance of the seal structure 30 and the building 1.

[0035] <Water Stopping> In the seal structure 30 according to this embodiment, the deformable portion 60 is deformed when liquid is introduced into the internal space 63. This deformation causes the second portion 62 to abut against the outer peripheral member 51 from the radially inner side. When the second portion 62 abuts against the outer peripheral member 51, a force due to water pressure acts on the outer peripheral member 51. This force on the outer peripheral member 51 acts radially outward. A reaction force also acts on the inner peripheral member 52. This force on the inner peripheral member 52 acts radially inward.

[0036] In this way, the deformation of the deforming portion 60 presses the outer peripheral member 51 and the inner peripheral member 52 radially apart from each other. As a result, the outer peripheral member 51 adheres tightly to the through hole 11, and the inner peripheral member 52 adheres tightly to the mounting member 20. That is, the outer peripheral sealing surface and the inner peripheral sealing surface both adhere tightly to each other. This makes it more difficult for liquid to pass through the seal structure 30, improving the watertightness of the seal structure 30.

[0037] Furthermore, in the seal structure 30 according to this embodiment, when liquid is introduced into the internal space 63 via the introduction path 53, the deformable portion 60 is deformed, and the deformable portion 60 comes into contact with the outer peripheral member 51 from the radially inner side. Because the outer peripheral member 51 has a larger diameter than the inner peripheral member 52, the area of ​​contact with the deformable portion 60 is increased. This ensures that force acts in the radial direction, further improving the watertightness of the seal structure 30.

[0038] Furthermore, when water pressure due to a tsunami or the like acts, it is conceivable that a large force will act on the seal structure 30 before the watertightness is improved by the deformation of the deformable portion 60 as described above. In the seal structure 30 according to this embodiment, the seal body 50 is not fixed to the through hole 11 and the installation member 20, and therefore there is a possibility that the seal structure 30 will be swept away by water pressure before the deformation of the deformable portion 60 occurs.

[0039] The seal structure 30 according to this embodiment has a stopper 70 that contacts the inner circumferential surface of the through hole 11 and is located on the other axial side of the seal member 40. Because the stopper 70 is fixed to the inner circumferential surface of the through hole 11, it is possible to prevent the seal body 50 from being swept away before deformation of the deforming portion 60 occurs. In this way, the stopper 70 holds the seal member 40. The stopper 70 can also be used to position the seal member 40.

[0040] <Workability> As described above, the seal structure 30 according to this embodiment can exhibit earthquake resistance and watertightness even if the seal member 40 is not fixed to the through hole 11 and the installation member 20. Because the seal member 40 is not fixed with an adhesive or the like, the seal body 50 can be easily removed during maintenance of the seal structure 30. If there is a fixing portion, it is conceivable that attempting to remove the seal body 50 could adversely affect the wall portion 10 or the installation member 20, but the seal structure 30 according to this embodiment can reduce this risk. In this way, the seal structure 30 according to this embodiment can improve the workability of the seal structure 30.

[0041] 3 illustrates an example in which only the second portion 62 of the deforming portion 60 of the seal structure 30 according to this embodiment deforms, but this is not limiting. For example, both the first portion 61 and the second portion 62 may deform. Specifically, the first portion 61 may deform toward the other axial direction and the second portion 62 may deform radially outward, causing the second portion 62 to deform so as to abut the outer peripheral member 51 from the radially inner side. That is, the inner space 81 deforms so as to expand radially and the outer space 82 to narrow radially, but the inner space 81 may also deform so as to expand toward the other axial direction.

[0042] This configuration allows the deformable portion 60 to be more easily deformed, and more reliably brings the deformable portion 60 into contact with the outer peripheral member 51. This ensures that radial force acts more reliably, and further improves the watertightness of the seal structure 30.

[0043] <Modification of First Embodiment> As a modification of the first embodiment, for example, the configuration shown in Fig. 4 may be used. That is, while in the first embodiment the deforming portion 60 is connected to the inner peripheral side member 52, the deforming portion 60 is connected to the outer peripheral side member 51. The deforming portion 60 similarly has a first portion 61, a second portion 62, and an internal space 63. The first portion 61 is connected to an end portion on the other axial side of the outer peripheral side member 51 and extends radially inward. The second portion 62 is connected to an end portion on the radially inner side of the first portion 61 and extends toward one axial side.

[0044] <Effects> As with the seal structure 30 according to the first embodiment, the seal structure 30 described above also seals the building 1 by having the seal body 50 fill the space between the through hole 11 and the installation member 20. In addition, the mechanism described below can improve the earthquake resistance and watertightness of the building 1 while also improving workability.

[0045] The deforming portion 60 of the seal member 40 according to this embodiment deforms as follows when liquid is introduced from the outdoors E, for example, due to a tsunami. The liquid is introduced into the internal space 63 through the introduction path 53. At this time, water pressure is applied to the seal body 50, and the second portion 62 deforms so as to abut against the inner peripheral member 52 from the radially outer side.

[0046] When the second portion 62 comes into contact with the inner peripheral member 52, a force due to water pressure acts on the inner peripheral member 52. This force on the inner peripheral member 52 acts inward in the radial direction. A force also acts on the outer peripheral member 51 as a reaction. This force on the outer peripheral member 51 acts outward in the radial direction.

[0047] In this way, the deformation of the deforming portion 60 presses the outer peripheral member 51 and the inner peripheral member 52 radially apart. As a result, the outer peripheral member 51 adheres tightly to the through hole 11, and the inner peripheral member 52 adheres tightly to the mounting member 20. That is, the outer peripheral sealing surface and the inner peripheral sealing surface both adhere tightly to each other. This makes it more difficult for liquid to pass through the seal structure 30. In this way, the seal structure 30 according to this embodiment can also improve the watertightness of the seal structure 30.

[0048] Furthermore, by using a mechanism similar to that of the seal structure 30 according to the first embodiment, the earthquake resistance and workability of the seal structure 30 can be similarly improved.

[0049] Although an example of deformation of the deforming portion 60 in which only the second portion 62 deforms has been described above, the present invention is not limited to this. For example, both the first portion 61 and the second portion 62 may deform. Specifically, the first portion 61 may deform toward the other axial direction and the second portion 62 may deform radially inward, causing the second portion 62 to deform so as to abut against the inner peripheral member 52 from the radially outer side. In other words, the inner space 81 may deform so as to narrow radially and the outer space 82 may deform so as to narrow radially, but the outer space 82 may deform so as to widen toward the other axial direction.

[0050] This configuration allows the deformable portion 60 to be more easily deformed, and more reliably brings the deformable portion 60 into contact with the outer peripheral member 51. This ensures that radial force acts more reliably, and further improves the watertightness of the seal structure 30.

[0051] Second Embodiment Next, a second embodiment of the present disclosure will be described with reference to Fig. 5. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. The seal structure 30 of the second embodiment is characterized in that the deformation portion 60 includes an elastic member having an internal space 63.

[0052] The deformation portion 60 is connected to the inner peripheral member 52. The deformation portion 60 has an elastic member and an internal space 63. The elastic member is connected to the other axial end of the inner peripheral member 52. The internal space 63 is formed in communication with the introduction path 53 and is configured to introduce liquid.

[0053] The deformation portion 60 is deformed as follows when liquid is introduced from outdoors E, such as a tsunami. The liquid is introduced into the internal space 63 through the introduction path 53. At this time, water pressure is applied to the seal body 50, causing the elastic member to expand. As the elastic member expands, it abuts against the outer peripheral member 51 from the radially inner side.

[0054] <Operation and Effect> In the seal structure 30 according to this embodiment, the deformable portion 60 is deformed when liquid is introduced into the internal space 63. The deformation causes the elastic member to abut against the outer peripheral member 51 from the radially inner side. When the elastic member abuts against the outer peripheral member 51, a force due to water pressure acts on the outer peripheral member 51. This force on the outer peripheral member 51 acts radially outward. A force also acts on the inner peripheral member 52 as a reaction. This force on the inner peripheral member 52 acts radially inward.

[0055] In this way, the deformation of the deforming portion 60 presses the outer peripheral member 51 and the inner peripheral member 52 radially apart. As a result, the outer peripheral member 51 adheres tightly to the through hole 11, and the inner peripheral member 52 adheres tightly to the mounting member 20. This makes it more difficult for liquid to pass through the seal structure 30, improving the watertightness of the seal structure 30. Furthermore, the seal structure 30 according to this embodiment can be made more easily deformed by providing the deforming portion 60 with an elastic member. This allows the deforming portion 60 to reliably abut against the outer peripheral member 51.

[0056] The same mechanism as the seal structure 30 according to the first embodiment can similarly improve the earthquake resistance and workability of the seal structure 30 according to this embodiment.

[0057] As a modified example of the seal structure 30 according to the present embodiment, the deforming portion 60 may be connected to the outer circumferential member 51. As with the modified example of the seal structure 30 according to the first embodiment, the modified example of the seal structure 30 according to the present embodiment can achieve the same advantageous effects.

[0058] <Other Embodiments> Although each embodiment of the present disclosure has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like are also included within the scope that does not deviate from the gist of the present disclosure.

[0059] For example, there may be provided a plurality of stoppers 70, or none at all. As an example, there may be provided a stopper 70 that contacts the inner circumferential surface of the through hole 11 and a stopper 70 that contacts the outer circumferential surface of the mounting member 20. Furthermore, the stopper 70 may be provided between the inner circumferential surface of the through hole 11 and the outer circumferential surface of the mounting member 20.

[0060] Furthermore, the configuration of the deforming portion 60 is not limited to the embodiment described above, and the deforming portion 60 may have another configuration as long as it is deformed by the introduced liquid to press the outer circumferential member 51 and the inner circumferential member 52 in the radial direction.

[0061] Furthermore, although the deformed portion 60 and the inner peripheral member 52 or the outer peripheral member 51 are shown in contact with each other at a point, this is not limitative. For example, they may be configured to contact with each other over a surface.

[0062] Furthermore, the entire sealing member 40 does not have to be made of the same material. For example, the second portion 62 of the first embodiment may be made of an elastic material. This makes it easier for the deforming portion 60 to deform, and ensures that the deforming portion 60 can abut against the outer peripheral member 51 or the inner peripheral member 52. Furthermore, for example, the blocking portion 54 may be made of a highly rigid material.

[0063] Furthermore, a plurality of introduction paths 53 may be formed at intervals in the circumferential direction, or a single introduction path may be formed instead of a plurality of introduction paths 53.

[0064] <Additional Notes> The seal structure 30 described in each embodiment can be understood, for example, as follows.

[0065] (1) A sealing structure 30 according to a first aspect is a sealing structure 30 for sealing between a through hole 11 penetrating a wall portion 10 between an outdoor portion E and an indoor portion I and an installation member 20 inserted into the through hole 11, and is provided with a sealing member 40 provided between an inner peripheral surface of the through hole 11 and an outer peripheral surface of the installation member 20, the sealing member 40 being made of a flexible material and including an outer peripheral side member 51 having a cylindrical shape abutting on the inner peripheral surface of the through hole 11, an inner peripheral side member 52 having a cylindrical shape abutting on the outer peripheral surface of the installation member 20, and a space between the outer peripheral side member 51 and the inner peripheral side member 52. and a deforming portion 60 connected to one of the outer circumferential member 51 and the inner circumferential member 52 on the indoor I side of the blocking portion 54, with an internal space 63 formed inside. One of the outer circumferential member 51 and the inner circumferential member 52 has an introduction passage 53 that opens to the outdoors E and communicates with the internal space 63, and the deforming portion 60 is configured to deform due to liquid introduced into the internal space 63 via the introduction passage 53, thereby abutting the other of the outer circumferential member 51 and the inner circumferential member 52 in the radial direction.

[0066] According to the above configuration, the sealing member 40 is flexible, allowing relative movement between the wall portion 10 and the installation member 20. This improves earthquake resistance. Furthermore, the outer peripheral member 51 and the inner peripheral member 52 are pressed radially apart by the deformation portion 60. This causes the outer peripheral member 51 to adhere closely to the through hole 11, and the inner peripheral member 52 to adhere closely to the installation member 20. This improves watertightness. Furthermore, even if the sealing member 40 is not fixed to the through hole 11 and the installation member 20, the earthquake resistance and watertightness can be achieved as described above. Therefore, there is no need to fix the sealing member 40 via, for example, an adhesive, improving workability.

[0067] (2) The sealing structure 30 according to the second aspect is the sealing structure 30 of (1) in which the deformation portion 60 is connected to the inner peripheral member 52, the introduction path 53 is formed in the inner peripheral member 52, and the deformation portion 60 is deformed by the liquid to abut against the outer peripheral member 51 from the radially inner side.

[0068] According to the above structure, when liquid is introduced into the internal space 63 through the introduction path 53, the deformable portion 60 deforms, and the deformable portion 60 abuts against the outer peripheral member 51 from the radially inner side. Because the outer peripheral member 51 has a larger diameter than the inner peripheral member 52, the abutting area with the deformable portion 60 is larger. This ensures that force acts in the radial direction, further improving the watertightness of the seal structure 30.

[0069] (3) The sealing structure 30 relating to the third aspect is the sealing structure 30 of (1) or (2), in which the deforming portion 60 has a first portion 61 extending from the end of one of the portions on the indoor I side toward the other, and a second portion 62 extending from the end of the other side of the first portion 61 toward the outdoor E side, and the internal space 63 has a first space 63a formed in the first portion 61 and connected to the introduction path 53, and a second space 63b formed in the second portion 62, whose end on the indoor I side is connected to the first space 63a and extends toward the outdoor E side.

[0070] According to the above configuration, the deformable portion 60 can be more easily deformed, and the deformable portion 60 can be more reliably brought into contact with the outer peripheral member 51 or the inner peripheral member 52. This ensures that radial force acts more reliably, and the watertightness of the seal structure 30 can be further improved.

[0071] (4) The seal structure 30 according to the fourth aspect is the seal structure 30 according to (3) in which the seal body 50 and the deforming portion 60 are integrally formed from the same material.

[0072] According to the above structure, the seal body 50 and the deforming portion 60 can be integrally molded, and can be easily manufactured.

[0073] (5) The sealing structure 30 relating to the fifth aspect is the sealing structure 30 of (2) in which the deformation portion 60 has an elastic member extending from the end portion on the indoor I side of one side toward the other side, and the internal space 63 formed within the elastic member and connected to the introduction path 53.

[0074] According to the above configuration, the deforming portion 60 can be more easily deformed, and the deforming portion 60 can be reliably brought into contact with the outer peripheral member 51 or the inner peripheral member 52. This allows a force to act in the radial direction, improving the watertightness of the seal structure 30.

[0075] (6) The sealing structure 30 according to the sixth aspect is a sealing structure 30 according to any one of (1) to (5) having a stopper 70 on the indoor I side of the sealing member 40 and on at least one of the inner surface of the through hole 11 and the outer surface of the arrangement member 20.

[0076] According to the above configuration, the seal member 40 can be positioned properly, and the seal member 40 can be prevented from being washed away when water rushes in from the outdoors E.

[0077] (7) The building 1 according to the seventh aspect is a building 1 including the wall portion 10, the installation member 20, and the sealing structure 30 of (1) to (6).

[0078] According to the above structure, the earthquake resistance, watertightness, and workability of the building 1 can be improved.

[0079] (8) A manufacturing method of the seal structure 30 according to an eighth aspect is a manufacturing method of the seal structure 30 according to any one of (1) to (4), including a step of manufacturing the seal member 40 by additive manufacturing.

[0080] According to the seal structure, building, and method for manufacturing a seal structure disclosed herein, it is possible to improve earthquake resistance and watertightness while also improving workability.

[0081] DESCRIPTION OF SYMBOLS 1 Building 10 Wall portion 11 Through hole 20 Installation member 30 Seal structure 40 Seal member 50 Seal body 51 Outer peripheral side member 52 Inner peripheral side member 53 Introduction path 54 Blocking portion 60 Deformation portion 61 First portion 62 Second portion 63 Internal space 63a First space 63b Second space 64 Elastic member 70 Stopper 80 Radial space 81 Inner space 82 Outer space O Axis I Indoors E Outdoors

Claims

1. A seal structure for sealing between a through hole penetrating a wall portion between the indoors and outdoors and an installation member inserted into the through hole, comprising a seal member provided between the inner circumferential surface of the through hole and the outer circumferential surface of the installation member, the seal member being made of a flexible material and comprising: a cylindrical outer circumferential member abutting the inner circumferential surface of the through hole; a cylindrical inner circumferential member abutting the outer circumferential surface of the installation member; a seal body having a blocking portion blocking the space between the outer circumferential member and the inner circumferential member; and a deformed portion connected to one of the outer circumferential member and the inner circumferential member on the indoor side of the blocking portion, with an internal space formed inside; and an introduction path formed in one of the outer circumferential member and the inner circumferential member, which opens to the outdoors and communicates with the internal space, The deforming portion is configured to deform due to the liquid introduced into the internal space through the introduction path, thereby abutting against the other of the outer circumferential member and the inner circumferential member from the radial direction.

2. A seal structure as described in claim 1, wherein the deformation portion is connected to the inner peripheral member, the introduction path is formed in the inner peripheral member, and the deformation portion is deformed by the liquid to abut against the outer peripheral member from the radially inner side.

3. The sealing structure described in claim 2, wherein the deforming portion has a first portion extending from the indoor end of one of the portions toward the other, and a second portion extending from the other end of the first portion toward the outdoor side, and the internal space has a first space formed within the first portion and connected to the introduction path, and a second space formed within the second portion, the indoor end of which is connected to the first space and extends toward the outdoor side.

4. The seal structure according to claim 3, wherein the seal body and the deformation portion are integrally formed from the same material.

5. A sealing structure as described in claim 2, wherein the deforming portion has an elastic member extending from the indoor side end of one of the portions toward the other.

6. The sealing structure according to claim 1, further on the indoor side than the sealing member, and further comprising a stopper on at least one of the inner peripheral surface of the through hole and the outer peripheral surface of the installation member.

7. A building comprising the sealing structure according to any one of claims 1 to 6, the wall portion, and the installation member.

8. A method for manufacturing a seal structure according to any one of claims 1 to 4, comprising the step of manufacturing the seal member by additive manufacturing.

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