Hollow gasket, panel with hollow gasket, joint structure of cross-shaped intersection, and joint structure of t-shaped intersection

Abstract

To provide a hollow gasket, a panel with the hollow gasket having the hollow gasket, and a joint structure of a cross-shaped crossing part and a joint structure of a T-shaped crossing part having the panel with the hollow gasket, without requiring manufacturing labor, by specifying and surely closing a generated clearance, by eliminating the generation of the clearance when mutually compressing the hollow gaskets.SOLUTION: This hollow gasket 30 is provided with a hollow part 34, a corner part 10, and a linear part 20 extending in two directions orthogonal to each other from the corner part 10, and is arranged in a header 42 of a panel 40, and a cutting surface 15 is arranged in a part of the corner part 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a hollow gasket, a panel with a hollow gasket, a joint structure at a cross-shaped intersection, and a joint structure at a T-shaped intersection. [Background technology]

[0002] In the case of joints (vertical or horizontal joints) between hollow gasketed panels, such as exterior wall panels, in which hollow gaskets are attached to the four peripheries (four small edges) of a rectangular panel in plan view, the two hollow gaskets that come into contact with each other are compressed from the other to form the joint.

[0003] There are no particular problems in the straight sections between panels, but hollow gaskets compressed at the corners of the panels tend to protrude outward in the normal direction perpendicular to the compression direction at the corner apex. This is because, while a hollow gasket with a circular cross section can deform into an ellipse in the straight sections, at corners, a gasket stretching in the compression direction is compressed in its axial direction (the axial direction of compression) and bent in the thickness direction.

[0004] At the cross-shaped intersection (cross-shaped joint), there is no space for the hollow gasket to protrude in the normal direction at the corner apex, so it bends inward (in the thickness direction) of the hollow part at a position different from the cross-shaped intersection, and this bending causes gaps to form at any position in the axial direction (unintended position).

[0005] For example, in so-called open joints, where appropriate flashings and airtight layers are installed at the joints of exterior curtain walls to minimize the difference in air pressure between the inside and outside, and where a rain barrier is used to mitigate the energy of water movement, small gaps do not affect watertightness.In contrast, in so-called closed joints with a double seal, these gaps become weak points in the watertightness and can cause water leaks.

[0006] For example, this is possible if the presence or absence of gaps and their locations can be visually checked from the outside after the cross-shaped intersection is formed, and the gaps can be filled with wet sealing or the like, but in joint structures that cannot be visually checked from the outside, such as when a gasket is attached to a step at the edge of a panel, the gaps cannot be filled with wet sealing or the like, and this can result in a decrease in watertightness. This problem can arise not only in the above-mentioned cross-shaped intersection, but also in a T-shaped intersection between two panels with hollow gaskets and another member (such as a waist wall or base) that does not have hollow gaskets on its edge.

[0007] In view of the above, what is desired is a hollow gasket and a panel with hollow gaskets, as well as a joint structure at a cross-shaped intersection and a joint structure at a T-shaped intersection, that can eliminate gaps that may occur when hollow gaskets are compressed against each other at a cross-shaped intersection of four hollow gasket-equipped panels that have hollow gaskets on the four edges (all four sides) or at a T-shaped intersection between two hollow gasket-equipped panels and another component, or that can identify and reliably close any gaps that do occur.

[0008] Patent Document 1 proposes a joint gasket. This joint gasket has a substantially cylindrical sealing portion made of an elastic material, one surface of which in the thickness direction is joined to the outer peripheral surface of the four sides of a building panel. The thickness L of the sealing portion located at the intersection of two sides of the building panel (a thickness inclined at 45 degrees to the thicknesses of the straight portions of the two sides) is set to L<√2·S, compared to the thickness S of the straight portions of the two sides. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Publication No. 9-235790 Summary of the Invention [Problem to be solved by the invention]

[0010] The joint gasket described in Patent Document 1 is said to be able to reliably prevent rainwater and the like from entering the room even when high-pressure rainwater from a rainstorm or the like is blown into the gap between building panels at the intersection where the four corners of the joint gasket meet. However, because it is necessary to vary the thickness in parts, the thickness L located at the intersection of two sides of the building panel in multiple rows of sealing parts (a thickness inclined at 45 degrees to the thickness of the straight parts of the two sides) and the thickness S of the other straight parts are molded using different methods, and the straight parts are extruded to thickness S, and the corner parts located at the intersection of the two sides of the building panel are injection molded with extrusion molding material such that the connection angle between the extrusion molding materials is in the range of 100 to 140 degrees, resulting in a molding (processing) that requires a great deal of effort.

[0011] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a hollow gasket and a hollow gasket-equipped panel equipped with this hollow gasket, as well as joint structures at a cross-shaped intersection and a T-shaped intersection that can eliminate gaps that can occur when hollow gaskets are compressed against each other at a cross-shaped intersection of four hollow gasket-equipped panels that have hollow gaskets at their four edges, or at a T-shaped intersection between two hollow gasket-equipped panels and another member, or that can identify and reliably close any gaps that occur, without requiring any manufacturing effort. [Means for solving the problem]

[0012] In order to achieve the above object, one aspect of the hollow gasket according to the present invention is A hollow gasket having a hollow, a corner portion, and linear portions extending in two directions perpendicular to the corner portion, and being disposed on a small edge of a panel, A cut surface is provided at a part of the corner.

[0013] According to this aspect, a hollow gasket that is hollow, has a corner portion and linear portions extending in two directions, and is placed on the small edge of a panel has a cut surface at a portion of the corner portion, which allows it to deform in the area of ​​the cut surface when pressed by another hollow gasket with good processability, and the hollow gasket can fill gaps at cross-shaped intersections, etc., without bending at any position in its axial direction. Furthermore, because the area that deforms in a compressed hollow gasket can be limited and specified to the area of ​​the cut surface, it is possible to prevent the hollow gasket from bending at any location in an invisible joint structure, causing gaps and reducing the watertightness of the joint.

[0014] Another aspect of the hollow gasket according to the present invention is The cut surface is a flat surface.

[0015] According to this embodiment, since the cut surface is flat, cutting is easy. In addition, the cut surface of the compressed hollow gasket at the cross-shaped intersection or T-shaped intersection deforms to close the gap, thereby effectively closing the gap.

[0016] Another aspect of the hollow gasket according to the present invention is The cutting surface is provided inside the thick wall outside the hollow.

[0017] According to this embodiment, a cut surface is provided inside the thick wall outside the hollow, which can reliably fill gaps when deformed by compression, and can close gaps at cross-shaped intersections, etc., while minimizing the cut area at corners as much as possible.

[0018] Another aspect of the hollow gasket according to the present invention is A feature of the present invention is that a part of the hollow space is exposed at the cut surface.

[0019] According to this aspect, since a part of the hollow is exposed at the cut surface, the cut area at the corner is relatively large, and gaps are likely to occur at cross-shaped intersections, etc., but the occurrence of gaps can be limited to the area of ​​the cut surface. Therefore, even if the area of ​​the cut surface is deformed due to compression of the hollow gasket, if the gap cannot be sufficiently filled, since the area where the gap will occur has been specified, it is possible to prevent a decrease in the watertightness of the joint by filling it with a wet sealant in advance.

[0020] Another aspect of the hollow gasket according to the present invention is The cutting surface is set on a line connecting the center points of the thicknesses of both of the corner portions, located at a first distance, which is the design value for the compressive deformation of the hollow gasket, from the outer end of the corner portion in each of the two directions.

[0021] According to this aspect, the cut surface is set on a line connecting the center points of the thickness of both corner portions, located in two directions from the outer end of the corner portion, at a position a first length away, which is the design value for the compressive deformation of the hollow gasket.This makes it possible to deform the cut surface toward the center of a cross-shaped intersection, etc., thereby suppressing deformation in unintended directions and effectively closing the gap.

[0022] Another aspect of the hollow gasket according to the present invention is It has a rectangular frame shape when viewed from the front, and the cutting surfaces are provided at the four corners.

[0023] According to this embodiment, the panel has a rectangular frame shape when viewed from the front, with cut surfaces provided at the four corners, so that hollow gaskets can be fitted into the four edges (four peripheries) of the rectangular panel when viewed from the front at once, thereby efficiently producing a panel with a hollow gasket consisting of a panel and a hollow gasket.

[0024] Furthermore, one aspect of the hollow gasketed panel according to the present invention is The hollow gasket is attached to the four small edges of a rectangular panel when viewed from the front.

[0025] According to this embodiment, the hollow gasket of the present invention, which has a rectangular frame shape when viewed from the front with cut surfaces at the four corners, is attached to the four edges (four perimeters) of the panel, so that when forming joints at cross-shaped or T-shaped intersections between adjacent panels, a joint structure in which the gaps at the intersections are closed can be formed.

[0026] Further, one aspect of the joint structure of the cross-shaped intersection portion according to the present invention is as follows: A cross-shaped intersection joint structure formed by the corners of each of the four hollow gasketed panels, The corners of the hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal.

[0027] According to this embodiment, a joint structure is formed by the respective corner portions of the four hollow gasket-equipped panels, and the corner portions of the hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal portion, thereby forming a joint structure in which the gaps at the cross-shaped intersections are reliably sealed.

[0028] Another aspect of the joint structure of the cross-shaped intersection according to the present invention is as follows: A cross-shaped intersection joint structure formed by the two hollow gasketed panels and the respective corner portions of two other hollow gasketed panels that do not have cut surfaces at the corner portions, The invention is characterized in that, at one diagonal position of the cross-shaped intersection, two panels with hollow gaskets having the cut surfaces are arranged, and at the other diagonal position, two panels with separate hollow gaskets not having the cut surfaces are arranged, and the corners of the two hollow gaskets at the diagonal positions are pressed against each other to form a seal.

[0029] According to this embodiment, a joint structure is formed by two hollow gasket-equipped panels and the respective corner portions of two separate hollow gasket-equipped panels that do not have cut surfaces at the corner portions, and two hollow gasket-equipped panels that have cut surfaces are arranged at one diagonal position of the cross-shaped intersection, and the corner portions of the two hollow gaskets at diagonal positions are pressed against each other to form a seal portion, thereby forming a joint structure in which the gaps at the cross-shaped intersection are reliably sealed.

[0030] Another aspect of the joint structure of the cross-shaped intersection according to the present invention is as follows: A cross-shaped intersection joint structure formed by the two hollow gasketed panels and the respective corner portions of two other hollow gasketed panels that do not have cut surfaces at the corner portions, Two of the hollow gasket-equipped panels having the cut surfaces are arranged at adjacent positions above and below or to the left and right of the cross-shaped intersection, and two other hollow gasket-equipped panels not having the cut surfaces are arranged at positions adjacent to these, and the corners of the two adjacent hollow gaskets are pressed against each other to form a seal.

[0031] According to this aspect, a joint structure is formed by the corner portions of two hollow gasket-equipped panels and two separate hollow gasket-equipped panels that do not have cut surfaces at the corner portions, and two hollow gasket-equipped panels that have cut surfaces are arranged at adjacent positions above, below, or to the left and right of the cross-shaped intersection, and two separate hollow gasket-equipped panels that do not have cut surfaces are arranged at positions adjacent to these, and the corner portions of the two adjacent hollow gaskets are pressed against each other to form a seal portion, thereby forming a joint structure in which the gaps at the cross-shaped intersection are reliably closed.

[0032] Another aspect of the joint structure of the cross-shaped intersection according to the present invention is as follows: At the cross-shaped intersection, The seal is characterized by being provided with one of a filled wet seal, a wet seal leaked from a capsule containing a sealing material, and a dry soft seal.

[0033] According to this aspect, at the cross-shaped intersection, one of the following types is provided: a filled wet seal, a wet seal leaked from a capsule containing a sealing material, or a dry soft seal. Therefore, even if a small gap remains at the cross-shaped intersection, this gap is completely sealed by the wet seal, etc., thereby forming a joint structure in which the gap at the cross-shaped intersection is securely sealed.

[0034] Here, to describe the form of this embodiment more specifically, one form is a form in which, in the joint structure of a cross-shaped intersection formed by the respective corner portions of four hollow gasket-equipped panels, the corner portions of the hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal, and the cross-shaped intersection is provided with one of a filled wet seal, a wet seal leaked from a capsule containing a sealant, or a dry soft seal.

[0035] Another embodiment of this aspect is a joint structure at a cross intersection formed by two hollow gasket-equipped panels and the respective corners of two separate hollow gasket-equipped panels that do not have cut surfaces at the corners, in which two hollow gasket-equipped panels with cut surfaces are arranged at one diagonal position of the cross intersection, and two separate hollow gasket-equipped panels without cut surfaces are arranged at the other diagonal position, the corners of the two hollow gaskets at the diagonal positions are pressed against each other to form a seal, and the cross intersection is provided with one of a filled wet seal, a wet seal leaked from a capsule containing sealant, or a dry soft seal.

[0036] Furthermore, still another embodiment of this mode is a joint structure of a cross-shaped intersection formed by the respective corners of two hollow gasket-equipped panels and two separate hollow gasket-equipped panels that do not have cut surfaces at the corners, in which two hollow gasket-equipped panels that have cut surfaces are arranged at adjacent positions above and below or to the left and right of the cross-shaped intersection, and two separate hollow gasket-equipped panels that do not have cut surfaces are arranged at positions adjacent to these, the corners of the two adjacent hollow gaskets are pressed against each other to form a seal, and one of a filled wet seal, a wet seal leaked from a capsule containing sealant, or a dry soft seal is provided at the cross-shaped intersection.

[0037] In addition, one aspect of the joint structure of the T-shaped intersection according to the present invention is A joint structure of a T-shaped intersection in which the hollow gaskets of two panels with hollow gaskets abut against the small edges of another member that does not have hollow gaskets, The corners of the hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal.

[0038] According to this aspect, the hollow gaskets of the two hollow gasket-equipped panels abut against the edges of other components that do not have hollow gaskets, and the corners of the hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal, thereby forming a joint structure in which the gap at the T-shaped intersection is reliably closed. Here, examples of other components include the waist wall of an exterior wall and a foundation (beam), etc.

[0039] Another aspect of the joint structure of the cross-shaped intersection according to the present invention is as follows: A joint structure of a T-shaped intersection, in which the hollow gasket of one panel with a hollow gasket and the hollow gasket of another panel with a hollow gasket that does not have the cut surface at a corner portion are in contact with a small edge of another member that does not have a hollow gasket, The corners of the hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal.

[0040] According to this aspect, the hollow gaskets of the hollow gasket-equipped panels having cut surfaces at the corners and the hollow gaskets of the hollow gasket-equipped panels not having cut surfaces at the corners abut against the edges of other components not having hollow gaskets, and the corners of the hollow gaskets of the hollow gasket-equipped panels are pressed against each other to form a seal, thereby forming a joint structure in which the gaps at the T-shaped intersections are reliably closed. Examples of other components include the spandrels of exterior walls and foundations (beams).

[0041] Another aspect of the joint structure of the T-shaped intersection according to the present invention is as follows: At the T-shaped intersection, The seal is characterized by being provided with one of a filled wet seal, a wet seal leaked from a capsule containing a sealing material, and a dry soft seal.

[0042] According to this embodiment, at the T-shaped intersection, one of the following types is provided: a filled wet seal, a wet seal leaked from a capsule containing a sealant, or a dry soft seal. Therefore, even if a small gap remains at the T-shaped intersection, this gap is completely blocked by the wet seal, etc., thereby forming a joint structure in which the gap at the T-shaped intersection is securely blocked.

[0043] Here, to describe the form of this embodiment more specifically, one form is a form in which, in a joint structure at a T-shaped intersection where the hollow gaskets of two hollow gasket-equipped panels abut against the edge of another component that does not have a hollow gasket, the corners of the hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal, and at the T-shaped intersection, one of a filled wet seal, a wet seal leaked from a capsule containing a sealant, or a dry soft seal is provided.

[0044] Another embodiment of this aspect is a joint structure at a T-shaped intersection in which a hollow gasket of one hollow gasket-equipped panel and a hollow gasket of a hollow gasket-equipped panel that does not have a cut surface at the corner are abutted against the edge of another component that does not have a hollow gasket, the corners of the hollow gaskets of the hollow gasket-equipped panels are pressed against each other to form a seal, and one of a filled wet seal, a wet seal leaked from a capsule containing a sealant, or a dry soft seal is provided at the T-shaped intersection. [Effects of the Invention]

[0045] As can be understood from the above explanation, the hollow gasket and hollow gasket-equipped panel, and the joint structure at a cross-shaped intersection and the joint structure at a T-shaped intersection of the present invention can eliminate gaps that can occur when hollow gaskets are compressed against each other at a cross-shaped intersection of four hollow gasket-equipped panels that have hollow gaskets at their four small edges, or at a T-shaped intersection of two hollow gasket-equipped panels and another component, or can identify and reliably close any gaps that occur, thereby providing a hollow gasket that does not require laborious manufacturing, and a hollow gasket-equipped panel that includes this hollow gasket, and further providing a joint structure at a cross-shaped intersection and a joint structure at a T-shaped intersection that have high watertightness. [Brief explanation of the drawings]

[0046] [Figure 1] FIG. 2 is a front view of an example of a hollow gasket according to an embodiment. [Figure 2] 2 is a cross-sectional view taken along the line II-II in FIG. 1, perpendicular to the axial direction of the hollow gasket. [Figure 3] 3 is a cross-sectional view showing an example of a cut surface at a corner of the hollow gasket according to the embodiment. FIG. [Figure 4] 4 is a view taken in the direction of an arrow IV in FIG. 3, showing the cross section as seen from the front. [Figure 5] FIG. 10 is a diagram illustrating a method for setting a cutting plane. [Figure 6]FIG. 10 is a cross-sectional view showing another example of a cut surface at a corner portion of the hollow gasket according to the embodiment. [Figure 7] 7 is a view taken in the direction of arrow VII in FIG. 5, showing the cross section as seen from the front. [Figure 8] FIG. 2 is a front view of an example of a hollow gasket-equipped panel according to an embodiment. [Figure 9] FIG. 2 is a front view of an example of a joint structure of a cross-shaped intersection according to an embodiment, and is an enlarged view of the cross-shaped intersection. [Figure 10] FIG. 1 is a front view of an example of a conventional joint structure at a cross-shaped intersection. [Figure 11] FIG. 10 is a front view of another example of a joint structure of a cross-shaped intersection according to an embodiment, and is an enlarged view of the cross-shaped intersection. [Figure 12] FIG. 10 is a front view of yet another example of a joint structure of a cross-shaped intersection according to an embodiment, and is an enlarged view of the cross-shaped intersection. [Figure 13] FIG. 2 is a front view of an example of a joint structure of a T-shaped intersection according to an embodiment, and is an enlarged view of the T-shaped intersection. DETAILED DESCRIPTION OF THE INVENTION

[0047] Hereinafter, a hollow gasket and a panel with a hollow gasket according to an embodiment, as well as examples of joint structures at a cross-shaped intersection and a T-shaped intersection, will be described with reference to the accompanying drawings. Note that in this specification and the drawings, substantially identical components will be designated by the same reference numerals, and redundant explanations may be omitted.

[0048] [Hollow gasket and panel with hollow gasket according to the embodiment, and joint structure at a cross-shaped intersection and joint structure at a T-shaped intersection] 1 to 13, a hollow gasket and a hollow gasket-equipped panel according to an embodiment, as well as examples of joint structures at a cross-shaped intersection and a T-shaped intersection, will be described. Here, FIG. 1 is a front view of an example of a hollow gasket according to an embodiment, FIG. 2 is a cross-sectional view taken along arrows II-II in FIG. 1, perpendicular to the axial direction of the hollow gasket, and FIG. 3 is a cross-sectional view showing an example of a cut surface at a corner of the hollow gasket according to an embodiment, FIG. 4 is a view taken along arrow IV in FIG. 3, showing the cut surface as seen from the front, and FIG. 5 is a diagram illustrating a method for setting the cut surface. Furthermore, FIG. 6 is a cross-sectional view showing another example of a cut surface at a corner of the hollow gasket according to an embodiment, FIG. 7 is a view taken along arrow VII in FIG. 6, showing the cut surface as seen from the front, and FIG. 8 is a front view of an example of a hollow gasket-equipped panel according to an embodiment.

[0049] The hollow gasket 30 in the illustrated example has a rectangular frame shape when viewed from the front, has four corners 10, and straight portions 20 extending in two axial directions perpendicular to each other from each corner 10, and has a horseshoe-shaped cross section with a hollow 34 inside a predetermined wall thickness 32. Note that the cross-sectional shape of the hollow gasket can be various shapes other than the illustrated example.

[0050] The four straight sections 20 that form the hollow gasket 30 have straight end faces 12 extending at 45 degrees at both ends, and the end faces 12 of adjacent straight sections 20 are bonded together to form a rectangular frame as shown in the example.

[0051] The straight portion 20 is manufactured by extrusion molding or the like of a material such as chloroprene rubber, ethylene propylene rubber (EPDM), silicone, or polyvinyl chloride.

[0052] The rectangular frame-shaped hollow gasket 30 has a linear cut surface 15 extending in a 45-degree direction at each corner 10. Here, the cut surface machined into the corner 10 may be a single flat surface as shown in the illustrated example, or may be a curved cut surface or a cut surface made up of flat surfaces at multiple different angles.

[0053] In this way, the hollow gasket 30 is manufactured by a manufacturing method in which the end faces 12 of the four straight sections 20 are bonded together and a portion of the four corner sections 10 is cut to form the cut surfaces 15, making it a hollow gasket that does not require much manufacturing effort.

[0054] Here, two examples of the cross section will be described in detail with reference to FIGS.

[0055] 3 and 4 show an example in which the cut surface 15 is provided inside the wall thickness 32 outside the hollow 34. Since the cut surface 15 is provided inside the wall thickness 32 outside the hollow 34, the hollow 34 is not exposed to the outside when the cut surface 15 is viewed from the front as shown in FIG.

[0056] To outline the method for setting the cross section 15, first, as shown in Fig. 5, the linear portion 20 of the uncompressed hollow gasket 30 indicated by the dashed dotted line is pressed from the side by the linear portion of another hollow gasket (not shown) in the X1 direction, and the amount of deformation t2 is calculated when the linear portion 20 is compressed and deformed. For example, assuming a joint structure at a cross-shaped intersection to be formed, the state in which each hollow gasket 30 is pressed in by the adjacent hollow gasket 30 when this joint structure is formed is simulated to calculate the amount of deformation t2, which is the design value of the first length.

[0057] Next, as shown in Figure 3, for example, at a cross-shaped intersection, it is assumed that the corner portion 10 of one hollow gasket 30 is pressed in two directions, the X2 direction and the X3 direction, by two adjacent hollow gaskets 30, and the thickness 32 of the hollow gasket 30 is set to t1. A cutting plane 15 is set on a line connecting the center points P1 of both thicknesses, located at a calculated first length t2 away from the outer end portion 11 of the corner portion 10 in each of the two directions.

[0058] 6 and 7 show an example in which a portion of hollow 34 is exposed at cut surface 15. When first length t2, which is a design value, is set as shown in Fig. 5, the relationship between first length t2 and thickness t1 of wall thickness 32 means that cut surface 15 does not fit within wall thickness 32, unlike the example shown in Fig. 3, and the cut surface becomes larger, resulting in a portion of hollow 34 being exposed midway through the cut surface as shown in Fig. 7; however, the method for setting cut surface 15 is the same as the examples shown in Figs. 3 and 4.

[0059] 3 and 4 or 6 and 7, when the corner portions 10 of multiple hollow gaskets 30 are pressed against each other at cross-shaped intersections or the like, the hollow gaskets 30 will deform within the space formed by the cut surfaces 15. In other words, because the deformation position of the compressed hollow gasket 30 is limited to the region of the cut surfaces 15, it is possible to prevent a portion of the straight portions 20 from bending (deforming) at any position (unintended position) of the straight portions 20 and creating a gap between the straight portions 20 and the panel.

[0060] 6 and 7, the cut area is large, and slight gaps may occur when the hollow gaskets 30 are pressed against each other at the intersections, resulting in deformation in the areas of the cut surfaces 15. Even in this case, since the areas where gaps may occur are identified in advance as these intersections, by applying a wet seal or the like to the intersections in advance during the process of forming the joint structure at the intersections, it becomes possible to close any slight gaps that may occur with the wet seal or the like, and form a joint structure without gaps at the intersections.

[0061] As shown in FIG. 8, a hollow gasket-equipped panel 50 is formed by fitting hollow gaskets 30 into four small edges 42 (around the four periphery) of a panel 40 that is rectangular when viewed from the front.

[0062] Here, examples of the panel 40 include PC (Precast Concrete) panels, wooden panels, glass curtain walls (curtain wall glass), etc. Examples of wooden panels that can be used include laminated wooden lumber, solid wooden lumber, structural plywood, laminated veneer lumber (LVL), cross-laminated timber (CLT), and square timber units in which multiple square timbers are glued or fastened together.

[0063] The open joints and closed joints described above are likely to occur when multiple panels are attached to the frame of a building as a curtain wall, so the hollow gasketed panel 50 shown in the figure is suitable as a panel for forming the curtain wall.

[0064] Next, the joint structures of the cross-shaped intersection and the T-shaped intersection will be described with reference to Fig. 9 to Fig. 13. Here, Fig. 9, 11, and 12 are all front views of an example of the joint structure of the cross-shaped intersection according to the embodiment, and are enlarged views of the cross-shaped intersection. Fig. 13 is a front view of an example of the joint structure of the T-shaped intersection according to the embodiment, and is an enlarged view of the T-shaped intersection.

[0065] The joint structure 70 of the cross-shaped intersection shown in FIG. 9 is a joint structure formed by the corner portions 10 of the hollow gaskets 30 of the four hollow gasket-equipped panels 50.

[0066] At the intersection 55, the corner portions 10 and the straight portions 20 near the corner portions 10 of the hollow gaskets 30 of each hollow gasket-equipped panel 50 are pressed against each other, causing the cross-section 15 shown by the dotted line of each corner portion 10 before deformation to deform in the Y1 direction, and the corner portions 10 come into close contact with each other at the intersection 55.

[0067] That is, before deformation of each hollow gasket 30, gaps S were generated by each cut surface 15, but as each hollow gasket 30 deforms, each cut surface 15 deforms and comes into close contact with each other, completely closing the gaps S and forming a joint structure with a gap-free seal portion 75. This cut surface 15 has a form in which the cut surface 15 is provided inside the wall thickness 32 outside the hollow 34, as shown in Figures 3 and 4, for example.

[0068] This prevents the linear portions 20 of each compressed hollow gasket 30 from bending at any position, and prevents gaps from being generated between the linear portions 20 .

[0069] For example, as shown in Figure 10, which shows a conventional joint structure, in a joint structure 70' at a cross intersection made up of four hollow gasket-equipped panels 50', each having a hollow gasket 30' that does not have a cut surface at the corner 10, if the hollow gasket 30' attached to the edge 42 of the panel 40 cannot be seen from the outside, and if the straight portion 20 bends at any position on the straight portion 20, causing a gap G to form between adjacent straight portions 20, it is not possible to identify the gap G, and it is not possible to take measures to fill the gap G using a wet seal or the like, which raises concerns about a decrease in the watertightness of the joint structure 70'.

[0070] The joint structure 70A at the cross-shaped intersection shown in Figure 11 is a joint structure having a gap-free seal portion 75A when the cut surface 15 of the corner portion 10 of each hollow gasket 30 is a large cut surface 15 as shown in Figures 6 and 7, and a part of the hollow 34 is exposed at the cut surface 15.At the intersection 55, even if the cut surface 15 of each corner portion 10 is deformed in the Y1 direction, a small gap S occurs, but this is blocked by the wet seal 60.

[0071] Here, the wet seal 60 can be used to seal gaps that occur at the cross-shaped intersection by, for example, erecting three hollow gasket-equipped panels 50, filling the wet seal at the center position of the cross-shaped intersection, and then erecting the last hollow gasket-equipped panel 50, thereby sealing the gaps that occur at the cross-shaped intersection with the wet seal 60.

[0072] This is because the positions where gaps will occur are identified in advance as being in the regions of the cut surfaces 15 of the corners 10 of each hollow gasket 30, and it is possible to fill these positions where gaps will occur in advance with the wet sealant 60. Therefore, even if the cross-shaped intersection 55 cannot be seen from the outside, any gaps that may occur at the intersection can be reliably sealed with the wet sealant 60.

[0073] Here, the wet seal may be a fill-type wet seal, or may be one in which a capsule containing a sealant is crushed to cause the wet seal to leak from the capsule. Furthermore, instead of a wet seal, a dry flexible seal may be used. For example, after three hollow gasket-equipped panels 50 are erected, a dry flexible seal is placed at the center of the cross-shaped intersection, and then the last hollow gasket-equipped panel 50 is erected, whereby the dry flexible seal is pressed against the cut surfaces 15 of the corners 10 of each hollow gasket 30 to close the gap.

[0074] In the joint structure 70B of the cross-shaped intersection shown in Figure 12, two hollow gasket-equipped panels 50 with cut surfaces 15 are arranged at one diagonal position of the cross-shaped intersection 55, and two separate hollow gasket-equipped panels 50' with hollow gaskets 30' without cut surfaces are arranged at the other diagonal position, and the cut surfaces 15 of the corner portions 10 of the two hollow gaskets 30 at the diagonal positions deform in the Y1 direction and come into close contact with each other, thereby forming a sealing portion 75.

[0075] Even with the joint structure 70B of the illustrated example, a joint structure without gaps at the cross-shaped intersection 55 can be formed.

[0076] Although not shown here, instead of the illustrated example in which two hollow gasketed panels 50 having cut surfaces 15 are arranged at a diagonal position, it is also possible to arrange two hollow gasketed panels 50 having cut surfaces 15 at adjacent positions above and below or to the left and right, and two separate hollow gasketed panels 30' having no cut surfaces at positions adjacent to these.

[0077] On the other hand, the joint structure 90 at the T-shaped intersection shown in Figure 13 is a joint structure in which the hollow gaskets 30 of two hollow gasket-equipped panels 50 abut against the small edges 82 of another component 80 that does not have hollow gaskets.

[0078] The corner portions 10 of the hollow gaskets 30 of each hollow gasket-equipped panel 50 are pressed against each other, and the cut surfaces 15 are deformed in the Y1 direction and come into close contact with each other, thereby forming a seal portion 95. Here, the other members 80 include a waist wall, a base, etc.

[0079] Even with the joint structure 90 shown in the figure, a joint structure without gaps can be formed at the T-shaped intersection 56.

[0080] Although not shown here, instead of the illustrated example having two hollow gasketed panels 50 with cut surfaces 15 at the corners, one may be a hollow gasketed panel 50 with cut surfaces 15 at the corners, and the other may be a hollow gasketed panel without cut surfaces at the corners.

[0081] It should be noted that the present invention is not limited to the configurations shown here, and other embodiments may be possible in which other components are combined with the configurations described in the above embodiments. In this regard, the present invention can be modified within the scope of the present invention, and can be appropriately determined depending on the application form. [Explanation of symbols]

[0082] 10: Corner 11: Outer edge 12: End face 15: Cut surface 20: Straight section 30: Hollow gasket 32: Thickness 34:Hollow 40: Panel 42: Small amount 50: Hollow gasket panel 50': Hollow gasketed panel 55: Cross intersection 56:T-shaped intersection 60: Wet seal 70, 70A, 70B: Joint structure at cross intersection (joint structure) 75, 75A, 75B: Seal part 80: Other materials (waist wall) 82: Small amount 90: Joint structure at T-shaped intersection (joint structure) 95: Seal part P1:Thickness center point

Claims

1. A hollow gasket having a hollow, a corner portion, and linear portions extending in two directions perpendicular to the corner portion, the hollow gasket being disposed on a small edge of a panel, A hollow gasket characterized in that a cut surface is provided at a part of the corner portion.

2. 2. The hollow gasket according to claim 1, wherein the cut surface is a flat surface.

3. 3. The hollow gasket according to claim 2, wherein the cut surface is provided inside the thick wall outside the hollow.

4. 3. The hollow gasket according to claim 2, wherein a part of the hollow is exposed at the cut surface.

5. 5. The hollow gasket according to claim 3, wherein the cutting surface is set on a line connecting the center points of the wall thicknesses of both of the corner portions, the center points being located at a first distance in each of the two directions from the outer end of the corner portion, which is a design value for compressive deformation of the hollow gasket.

6. 5. The hollow gasket according to claim 3, wherein the hollow gasket has a rectangular frame shape when viewed from the front, and the cut surfaces are provided at the four corners.

7. A hollow gasket-equipped panel, characterized in that the hollow gasket according to claim 6 is attached to four small edges of a rectangular panel when viewed from the front.

8. A cross-shaped intersection joint structure formed by each corner portion of the hollow gasketed panel according to claim 4, A joint structure at a cross-shaped intersection, characterized in that corners of hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal.

9. A cross-shaped intersection joint structure formed by two hollow gasketed panels according to claim 7 and the respective corner portions of two separate hollow gasketed panels having no cut surfaces at the corner portions, A joint structure of a cross-shaped intersection, characterized in that two of the hollow gasket-equipped panels having the cut surface are arranged at one diagonal position of the cross-shaped intersection, and two separate hollow gasket-equipped panels not having the cut surface are arranged at the other diagonal position, and the corners of the two hollow gaskets at the diagonal positions are pressed against each other to form a seal.

10. A cross-shaped intersection joint structure formed by two hollow gasketed panels according to claim 7 and the respective corner portions of two separate hollow gasketed panels having no cut surfaces at the corner portions, A joint structure of a cross-shaped intersection, characterized in that two of the hollow gasket-equipped panels having the cut surfaces are arranged at adjacent positions above and below or to the left and right of the cross-shaped intersection, and two separate hollow gasket-equipped panels not having the cut surfaces are arranged at positions adjacent to these, and the corners of the two adjacent hollow gaskets are pressed against each other to form a seal.

11. At the cross-shaped intersection, The joint structure of a cross-shaped intersection as claimed in claim 8, characterized in that one of a filled wet seal, a wet seal leaked from a capsule containing a sealant, and a dry soft seal is provided.

12. A joint structure of a T-shaped intersection, in which the hollow gaskets of two hollow gasket-equipped panels according to claim 7 are in contact with the small edges of other members that do not have hollow gaskets, A joint structure at a T-shaped intersection, characterized in that corners of hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal.

13. A joint structure of a T-shaped intersection, in which the hollow gasket of one hollow gasket-equipped panel according to claim 7 and the hollow gasket of another hollow gasket-equipped panel not provided with the cut surface at the corner portion are in contact with a small edge of another member not provided with a hollow gasket, A joint structure at a T-shaped intersection, characterized in that corners of hollow gaskets of each hollow gasket-equipped panel are pressed against each other to form a seal.

14. At the T-shaped intersection, The joint structure of a T-shaped intersection according to claim 12, characterized in that one of a filled wet seal, a wet seal leaked from a capsule containing a sealant, and a dry soft seal is provided.

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