Facade unit sealing structure and facade unit sealing method

Abstract

The present invention relates to a facade unit sealing structure and a facade unit sealing method. The facade unit sealing structure according to the present invention includes a plurality of facade units spaced apart from each other and a gasket unit configured to seal the gap between the facade units. The gasket unit comprises a fixing part fixed to a perimeter frame, an expansion part having an expansion chamber formed inside, and a sealing part surrounding the outer side of the expansion part. As the volume of the expansion part increases due to the expansion of the expansion chamber, the sealing part presses against the perimeter frame of an adjacent facade unit to seal the gap between the facade units. Accordingly, stable sealing performance can be secured despite gap deviations occurring during the facade unit installation process, and the sealing state between facade units can be selectively controlled by adjusting the expansion pressure, thereby improving constructability and maintainability.

Description

Technology Field

[0001] The present invention relates to a facade unit sealing structure and a facade unit sealing method. Background Technology

[0003] In the field of architecture, driven by the trend toward larger and more modular facade systems that form the exterior of buildings, unit-type facade structures—which involve arranging and installing multiple facade units on the building's outer walls—are being widely applied. This type of unit-type facade structure offers the advantage of maintaining uniform construction quality and shortening construction time by sequentially installing factory-fabricated facade units onto the structural frame on-site.

[0004] Generally, a facade unit includes a facade frame and a perimeter frame joined along the edge of the facade frame, and a sealed structure is required between adjacent facade units to prevent the ingress of external air, rainwater, dust, etc. To this end, a method has conventionally been used in which the facade units are installed on the structural frame with gaskets pre-attached to the perimeter frames of each facade unit, such as aluminum frames.

[0005] However, in such conventional structures, construction errors occurring during the installation of facade units can lead to a problem where the spacing between adjacent facade units is not maintained consistently. For example, deviations in the left-right spacing may occur between facade units arranged side by side in the horizontal direction; in this case, the pre-installed gasket may not be sufficiently compressed, resulting in incomplete sealing of the gaps.

[0006] Furthermore, variations in vertical spacing may occur between facade units stacked in the vertical direction; in such cases, problems arise where construction becomes difficult due to excessive compression of the gasket or interference during the installation process. Particularly when facade units are large or irregular elevation structures are applied, these construction errors can become even more significant, making it difficult to reliably ensure airtightness performance between the facade units.

[0007] In addition, conventional elastic gasket methods require maintaining a state of forced compression between adjacent frames to ensure watertightness and airtightness. Consequently, if a specific unit is damaged after construction or if the facade unit needs to be separated for internal equipment inspection, the friction and compression forces of the gasket make it very difficult to detach the unit. During this process, the gasket may be damaged or excessive physical impact may be applied to adjacent frames, causing secondary damage. Furthermore, there is a limitation in that it is difficult to restore the airtightness performance to its initial level upon reassembly following maintenance.

[0008] Therefore, there is an urgent need to develop a new type of air-inflatable facade unit sealing structure that can not only ensure stable sealing performance despite gap deviations occurring during the facade unit installation process, but also facilitate the disassembly and replacement of the facade unit by arbitrarily releasing the compressed state by adjusting the air pressure inside the gasket during maintenance. Prior art literature

[0010] Korean Registered Patent No. 10-1410277 The problem to be solved

[0011] Accordingly, the present invention was devised to solve the above-mentioned problems and aims to provide a facade unit sealing structure that can accommodate gap deviations caused by construction errors in a gasket structure that seals the gap between facade units.

[0012] In addition, the purpose is to provide a facade unit sealing structure that can improve airtightness performance between facade units by allowing the sealing pressure to be adjusted even after the facade unit is installed.

[0013] In addition, the purpose is to provide a structure that allows for easier disassembly, replacement, or maintenance of the facade units by selectively controlling the sealing state between the facade units through the expansion and contraction of the gasket.

[0014] Other objects and advantages of the present invention may be understood from the following description and will become more clearly apparent from the embodiments of the present invention. Furthermore, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims. means of solving the problem

[0016] According to the present invention, a facade unit sealing structure is provided, comprising: a plurality of facade units spaced apart from each other; and a gasket unit configured to seal a gap between the facade units; wherein the facade unit comprises a facade frame and a perimeter frame coupled along the perimeter of the facade frame, and the gasket unit comprises a fixing part fixed to one of the perimeter frames of the facade units; an expansion part having an expansion chamber formed therein; and a sealing part provided on the outside of the expansion part; wherein, as the expansion chamber expands, the volume of the expansion part increases, and the sealing part presses against a pair of adjacent perimeter frames to seal the gap.

[0017] The gasket unit may be formed along the extension direction of the rim frame and configured to seal the gap between the pair of facade units.

[0018] The above-mentioned rim frame includes a coupling groove, and the fixing part may be configured to be inserted into the coupling groove so that the gasket unit is fixed to the rim frame.

[0019] The above expansion chamber can be expanded by the injection of gas or liquid, or its volume can be increased by foaming.

[0020] The above sealing part may be formed of a foamed rubber, sponge rubber, or elastomeric material capable of elastic deformation.

[0021] The above expansion part may be formed of a rubber or elastomeric material capable of elastic deformation.

[0022] The above-mentioned spaced-apart facade units include a first facade unit and a second facade unit, and the gasket unit may be provided on the perimeter frame of each of the first facade unit and the second facade unit.

[0023] The gasket units provided in the first facade unit and the second facade unit, respectively, are arranged to face each other and can be configured so that the gasket units are compressed against each other according to the expansion of the expansion part.

[0024] The gasket units provided in the first facade unit and the second facade unit, respectively, are arranged offset from each other and can be configured so that the gasket units press the perimeter frame of the other facade unit according to the expansion of the expansion part.

[0025] The above gasket unit is provided on the perimeter frame of one of the facade units, and one or more protrusions protruding toward the gasket unit may be formed on the perimeter frame of the other facade unit.

[0026] As the volume of the expansion portion increases, the sealing portion may be configured to be pressed by the protrusion to seal the gap between the facade units.

[0027] The above expansion chamber is formed as a closed hollow structure and can be extended in a tube shape along the extension direction of the rim frame.

[0028] The above expansion chamber may have a circular, elliptical, or polygonal cross-sectional shape.

[0029] According to the present invention, a facade unit sealing method is provided for sealing the gap between a first facade unit and a second facade unit spaced apart from each other.

[0030] The above-described facade unit sealing method is characterized by comprising: a step of placing a gasket unit provided in the first facade unit or the second facade unit at a position corresponding to the gap; and a step of sealing the gap by expanding the expansion chamber of the gasket unit so that the gasket unit pressurizes the gap between the first facade unit and the second facade unit. Effects of the invention

[0032] According to the facade unit sealing structure of the present invention, by expanding the expansion chamber of the gasket unit after the facade unit is installed to pressurize the sealing portion against the perimeter frame of an adjacent facade unit, stable sealing performance can be secured even when the spacing between facade units is not uniform due to construction errors.

[0033] In addition, by adjusting the expansion pressure of the gasket unit, the sealing pressure between the facade units can be controlled according to conditions, thereby improving airtightness and waterproofing performance.

[0034] In addition, if it is necessary to disassemble or replace the facade unit, the pressure of the gasket can be relieved by lowering the pressure of the expansion chamber or releasing the expansion state, so that the separation and maintenance of the facade unit can be performed more easily.

[0035] Therefore, the present invention has the effect of improving the constructability and maintainability of the facade unit while ensuring stable sealing performance. Brief explanation of the drawing

[0037] FIG. 1 is a schematic diagram of one embodiment of the facade structure system of the present invention. FIG. 2 is a schematic diagram of one embodiment of a facade structural system with the facade outer shell removed from FIG. 1 and a gasket unit included therein. FIG. 3 is a schematic diagram of another embodiment of a facade structural system with the facade outer shell removed from FIG. 1 and a gasket unit included therein. FIG. 4 is a schematic diagram of one embodiment of the facade unit sealing structure of the present invention. Figure 5 is a schematic diagram illustrating the expansion process of the gasket unit of Figure 4. Figure 6 is a schematic diagram showing a configuration in which a valve unit is added to the gasket unit of Figure 5. FIG. 7 is a schematic diagram showing a state in which gasket units are provided on adjacent facade units and arranged to face each other. FIG. 8 is a schematic diagram showing a state in which gasket units are arranged offset from each other on adjacent facade units. FIG. 9 is a schematic diagram showing a modified example of a gasket unit in which the sealing portion is formed only in a part of the expansion portion. FIG. 10 is a schematic diagram showing a modified example of a gasket unit in which the cross-sections of the expansion part and the expansion chamber are formed in a polygonal shape. FIG. 11 is a perspective view showing a modified example of a rim frame with a protrusion formed thereon. FIG. 12 is a schematic diagram showing a facade unit sealing structure including the border frame of FIG. 11. Specific details for implementing the invention

[0038] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Instead, based on the principle that the inventor may appropriately define the concepts of terms to describe their invention in the most preferred manner, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely one preferred embodiment of the present invention and do not represent all aspects of the technical spirit of the present invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application. Furthermore, in describing the present invention, if it is determined that a detailed description of related known configurations or functions may obscure the essence of the present invention, such detailed description will be omitted.

[0039] The embodiments of the present invention are provided to more fully explain the invention to those skilled in the art; therefore, the shapes and sizes of the components in the drawings may be exaggerated, omitted, or schematically depicted for clearer explanation. Accordingly, the size or proportion of each component does not entirely reflect the actual size or proportion. Similar reference numerals have been used for similar components in describing each drawing. In the accompanying drawings, the dimensions of the structures are depicted enlarged from their actual size for the clarity of the invention. The terms used to describe the various components are for illustrative purposes only and should not limit the components. The terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the invention, a first component may be named a second component, and similarly, a second component may be named a first component. A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0040] Terms such as "comprising" or "having" as used throughout this specification are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Furthermore, when a part such as a layer, film, region, or plate is described as being "on" another part, this includes not only the case where it is "immediately above" the other part, but also the case where there is another part in between. Conversely, when a part such as a layer, film, region, or plate is described as being "under" another part, this includes not only the case where it is "immediately below" the other part, but also the case where there is another part in between. Additionally, in this specification, being placed "on" may include being placed on the lower part as well as on the upper part.

[0041] In addition, in the present invention, "slit" refers collectively to a through hole having a long axis that is long in one direction and a short axis that is short in a direction perpendicular to the long axis, and includes cases where the shape is rectangular, elliptical, or bead-shaped.

[0042] In addition, the length direction of a configuration is defined as a direction corresponding to the side having the longest length of the configuration shown in the drawing with respect to the horizontal direction, and the width direction of a configuration is defined as a direction orthogonal to the length direction with respect to the horizontal direction.

[0044] FIG. 1 is a schematic diagram of one embodiment of the facade structure system (1000) of the present invention.

[0045] Referring to FIG. 1, a facade structure system (1000) according to one embodiment of the present invention is a structure for supporting a facade shell (300) installed on the outer wall of a building, and may include a frame (100) and a plurality of facade units (210).

[0046] The above facade units (210) may be arranged along the outer wall of a building, and a facade unit sealing structure (200) to prevent the inflow of the external environment may be applied between adjacent facade units (210).

[0048] The present invention relates to a facade unit sealing structure (200) and a facade unit (210) sealing method in a facade structure system (1000). FIGS. 2 to 11 relate to a facade unit sealing structure (200). Hereinafter, embodiments of the facade unit sealing structure (200) and the facade unit (210) sealing method of the present invention will be described in detail with reference to the attached drawings.

[0049] For reference, the front-back and up-down-left-right directions used to specify relative positions in the following description are intended to aid in understanding the invention, and unless otherwise specifically defined, the directions depicted in the drawings are used as the reference.

[0051] Facade unit sealing structure (200) and facade unit (210) sealing method

[0052] FIG. 2 is a schematic diagram of one embodiment of a facade structural system (1000) with the facade outer shell (300) removed from FIG. 1 and a gasket unit (220) included therein, FIG. 3 is a schematic diagram of another embodiment of a facade structural system (1000) with the facade outer shell (300) removed from FIG. 1 and a gasket unit (220) included therein, FIG. 4 is a schematic diagram of one embodiment of a facade unit sealing structure (200) of the present invention.

[0054] FIGS. 2 and FIGS. 3 are drawings for explaining the configuration of a facade unit (210) to which a facade unit sealing structure (200) according to one embodiment of the present invention is applied, and together they are drawings showing an enlarged view of a part of the facade unit (210) arranged on the outer wall of a building and an enlarged view of a part of the gasket unit (220) coupled to the edge frame (212) of the facade unit (210).

[0055] Referring to FIGS. 2 to 4, the facade unit (210) may include a facade frame (211) and a border frame (212) joined along the border of the facade frame (211).

[0056] The above facade frame (211) is a structure that forms the skeleton of the above facade unit (210), and a reinforcing board (400) can be attached to its front or rear side as shown in the drawing.

[0057] The above-mentioned border frame (212) is a member joined along the outer border of the above-mentioned facade frame (211) and can be used as a structure to provide a zone to which a gasket unit (220) is joined to seal the gap between the above-mentioned facade units (210), or to seal the gap between the above-mentioned facade units (210) by pressing the gasket unit (220).

[0058] In the embodiment illustrated in FIG. 2, an example is shown in which a gasket unit (220) is provided on a border frame (212) formed on the side of a facade unit (210), and FIG. 3 shows an example in which a gasket unit (220) is provided on a border frame (212) formed on the upper part of a facade unit (210).

[0059] However, the placement location of the above gasket unit (220) is not limited thereto, and may also be provided on the border frame (212) formed on the lower part of the above facade unit (210) as needed.

[0060] Additionally, the gasket unit (220) may be formed along the entire length along the extension direction of the rim frame (212), and may be installed only in some sections as needed.

[0061] The above gasket unit (220) may include the fixed part (221), the expansion part (222) having an expansion chamber (222a) formed inside, and the sealing part (223) provided on the outside of the expansion part (222).

[0062] The above-mentioned border frame (212) may include a coupling groove (212a) on its outer side, and the coupling groove (212a) may be configured in the form of a slit formed along the extension direction of the border frame (212).

[0063] The gasket unit (220) can be fixed to the rim frame (212) by inserting the fixing part (221) into the coupling groove (212a). At this time, the shape of the fixing part (221) and the coupling groove (212a) is not limited to the shape shown in the drawing, and can be implemented in various shapes so that the gasket unit (220) can be fixed to the rim frame (212) without being inserted and detached.

[0064] Additionally, the expansion part (222) and the fixed part (221) may be formed integrally, or, if necessary, the fixed part (221) may be formed in a structure that is separately coupled to the expansion part (222).

[0065] The above expansion part (222) may be formed of a rubber or elastomer material capable of elastic deformation.

[0066] Additionally, the gasket unit (220) can be joined in a tight manner so that no separate gap is formed between the rim frame (212) and the gasket unit (220) when the gasket unit (220) is fixed to the rim frame (212). Accordingly, it is possible to prevent the gasket unit (220) from detaching from the rim frame (212) or the formation of a path for fluid penetration.

[0067] The sealing portion (223) is formed on the outer side of the expansion portion (222) and is configured to seal the gap between adjacent structures by being deformed and compressed in conjunction with the shape deformation of the expansion portion (222).

[0068] The sealing portion (223) may be formed to surround the outer side of the expansion portion (222), but is not limited thereto, and may also be implemented as a structure formed only in a part of the expansion portion (222).

[0069] The above sealing part (223) is preferably formed of a material that is elastically deformable and does not allow fluid to pass through, and may be formed of, for example, foam rubber, sponge rubber, or an elastomer material.

[0071] FIG. 5 is a schematic diagram for explaining the expansion process of the gasket unit (220) of FIG. 4, and is a diagram schematically showing the process of the gasket unit (220) according to one embodiment of the present invention sealing the gap between a pair of facade units (210).

[0072] Referring to FIG. 5, one of a pair of facade units (210) spaced apart from each other can be called the first facade unit (210a) and the other the second facade unit (210b).

[0073] The gasket unit (220) may be provided in the first facade unit (210a), and the gasket unit (220) may include a fixed part (221), an expansion part (222) having an expansion chamber (222a) formed inside, and a sealing part (223) surrounding the outside of the expansion part (222).

[0074] The above expansion chamber (222a) can be formed as a closed hollow structure with an empty interior.

[0075] As the expansion chamber (222a) expands, the volume of the expansion part (222) increases, and accordingly, the sealing part (223) formed on the outside of the expansion part (222) is elastically deformed in the outward direction, thereby pressurizing the gap between the first facade unit (210a) and the second facade unit (210b).

[0076] The expansion chamber (222a) may be formed in a long, extended tube shape along the extension direction of the rim frame (212), so that the gasket unit (220) can continuously expand along the length direction to more stably seal the gap between the facade units (210).

[0077] Accordingly, the sealing part (223) can seal the gap between the facade units (210) in a tight state to prevent the entry of the external environment.

[0079] The expansion of the above expansion chamber (222a) can be achieved by injecting a fluid such as gas or liquid, or by increasing the volume through a foaming reaction.

[0080] In the case of the above fluid injection method, the expansion of the gasket unit (220) can be released by removing the fluid as needed, so the separation of the facade unit (210) can be facilitated. Additionally, in the case of the foaming method, the volume increase of the expansion part (222) is continuously maintained, so the sealing state between the facade units (210) can be maintained more stably.

[0081] As the expansion portion (222) expands, the sealing portion (223) protrudes toward an adjacent structure, and accordingly, can press at least one or both edge frames (212) of the adjacent facade unit (210).

[0082] Specifically, the sealing part (223) is deformed to protrude outward by receiving pressure from the expansion chamber (222a), and when the sealing part (223) comes into contact with an adjacent structure, such as the rim frame (212) of the second facade unit (210b), it can be elastically deformed while being pressed by the rim frame (212). Due to this pressure, the sealing part (223) can act to more tightly seal the gap between the facade units (210).

[0084] The above gasket unit (220) can form a continuous sealing section along the gap between the facade units (210) by means of a structure formed in a long extended shape along the extension direction of the rim frame (212).

[0085] Meanwhile, according to another embodiment of the present invention, a method for sealing the gap between facade units (210) using a gasket unit (220) as described above may be provided.

[0086] For example, the facade units (210) can be arranged such that the gasket unit (220) is attached to the edge frame (212) of the first facade unit (210a) or the second facade unit (210b), and the gasket unit (220) is positioned at a location corresponding to the gap between the facade units (210).

[0087] Subsequently, by expanding the expansion chamber (222a), the volume of the expansion part (222) increases, and accordingly, the sealing part (223) can pressurize the gap between the first facade unit (210a) and the second facade unit (210b) to seal the gap.

[0088] Additionally, if necessary, the expansion state of the gasket unit (220) may be released by discharging the fluid inside the expansion chamber (222a), thereby relieving the sealing state between the facade units (210).

[0090] FIG. 6 is a schematic diagram showing a configuration in which a valve unit (224) is added to the gasket unit (220) of FIG. 5; FIG. 7 is a schematic diagram showing a state in which gasket units (220) are provided on adjacent facade units (210) and arranged to face each other; FIG. 8 is a schematic diagram showing a state in which gasket units (220) are arranged offset from each other on adjacent facade units (210); FIG. 9 is a schematic diagram showing a modified example of a gasket unit (220) in which a sealing portion (223) is formed only on a part of the expansion portion (222); FIG. 10 is a schematic diagram showing a modified example of a gasket unit (220) in which the cross-sections of the expansion portion (222) and the expansion chamber (222a) are formed in a polygonal shape; FIG. 11 is a perspective view showing a modified example of a rim frame (212) in which a protrusion (212b) is formed; FIG. 12 is the rim of FIG. 11 This is a schematic diagram showing a facade unit sealing structure (200) including a frame (212).

[0092] FIG. 6 is a drawing showing an example in which a valve unit (224) is provided in a gasket unit (220) according to one embodiment of the present invention.

[0093] Referring to FIG. 6, the valve unit (224) may be formed to pass through the sealing part (223) and the expansion part (222) and communicate with the expansion chamber (222a).

[0094] The above valve unit (224) can be used as a passage for injecting external fluid into the expansion chamber (222a), and, if necessary, can also be used as a passage for discharging fluid inside the expansion chamber (222a) to the outside.

[0095] The valve unit (224) may provide a passage for injecting fluid into the expansion chamber (222a) and, if necessary, may also be used as a passage for discharging fluid from the expansion chamber (222a) to the outside. Additionally, the valve unit (224) may be sealed to maintain the pressure inside the expansion chamber (222a) after the injection of fluid is completed. For example, the valve unit (224) may maintain the expanded state of the expansion section (222) by sealing the valve unit (224) through means such as a separate stopper after the inflow or discharge of fluid is completed.

[0097] FIGS. 7 and FIGS. 8 are drawings showing an example in which a gasket unit (220) is provided in each of the first facade unit (210a) and the second facade unit (210b).

[0098] In the embodiment illustrated in FIG. 7, a gasket unit (220) is provided on the perimeter frame (212) of the first facade unit (210a) and the second facade unit (210b), respectively, and the gasket units (220) are arranged to face each other.

[0099] In this structure, as the expansion chamber (222a) expands, the expansion portion (222) of each gasket unit (220) expands, and accordingly, the sealing portions (223) of the two gasket units (220) come into contact with each other and are compressed, thereby sealing the space between the facade units (210).

[0100] In the embodiment illustrated in FIG. 8, the gasket units (220) provided in the first facade unit (210a) and the second facade unit (210b), respectively, may be arranged so as to be offset from each other.

[0101] In this structure, as the expansion chamber (222a) expands, the expansion portion (222) of each gasket unit (220) expands, causing each gasket unit (220) to press against the edge frame (212) of another facade unit (210), thereby allowing the gap between the facade units (210) to be sealed double-sided.

[0103] FIG. 9 is a cross-sectional structure of a gasket unit (220) according to another embodiment of the present invention. The sealing portion (223) is not limited to being formed in a shape that surrounds the entire outer side of the expansion portion (222), and may be formed only in a part of the expansion portion (222) as needed.

[0104] For example, the sealing portion (223) may be formed only in the area that comes into direct contact with the other facade unit (210) when the expansion portion (222) expands. In this case, since the expansion portion (222) itself may also be formed of a material that prevents the passage of fluid, sealing between the facade units (210) can be achieved even in a structure where the sealing portion (223) is formed only in a partial area.

[0106] The expansion chamber (222a) can be formed in various cross-sectional shapes, such as circular, elliptical, or polygonal.

[0107] According to FIG. 10, an example of an expansion chamber (222a) having a square cross-sectional shape is shown.

[0108] In this way, by forming the shape of the expansion chamber (222a) in various ways, the expansion shape of the expansion part (222) can be adjusted according to the shape or area of ​​the space requiring sealing.

[0110] FIGS. 11 and 12 are drawings showing an example in which the shape of the perimeter frame (212) of another facade unit (210) facing the facade unit (210) equipped with the expanding gasket unit (220) is deformed.

[0111] As illustrated in FIG. 11, at least one protrusion (212b) may be formed on the rim frame (212), and the protrusion (212b) may be formed along the extension direction of the rim frame (212).

[0112] The protrusion (212b) formed in this manner can improve the sealing effect between the facade units (210) by providing local pressure to the sealing portion (223) when the expansion portion (222) of the gasket unit (220) expands.

[0113] In addition, when multiple protrusions (212b) are formed, the contact area between the protrusions (212b) and the sealing part (223) increases, thereby enabling a double or triple sealing effect.

[0114] Due to this structure, the pressure resulting from the expansion of the gasket unit (220) can be concentrated in a specific area, so the gap between the facade units (210) can be sealed more stably.

[0117] The present invention has been described in more detail above through drawings and embodiments. However, the configurations described in the drawings or embodiments described in this specification are merely one embodiment of the present invention and do not represent all technical concepts of the present invention; therefore, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application. Explanation of the symbols

[0119] 1000: Facade Structural System 100: Frame 200: Facade unit sealed structure 210: Facade Unit 210a: 1st Facade Unit 210b: Second Facade Unit 211: Facade Frame 212: Border frame 212a: Connecting groove 212b: Protrusion 220: Gasket unit 221: Fixed part 222: Expansion part 222a: Expansion chamber 223: Sealed part 224: Valve unit 300: Facade skin 400: Reinforcement board

Claims

Claim 1 A facade unit sealing structure comprising: a plurality of facade units spaced apart from each other; and a gasket unit configured to seal a gap between the facade units; wherein the facade unit comprises a facade frame and a perimeter frame coupled along the perimeter of the facade frame; and the gasket unit comprises a fixing part fixed to the perimeter frame of any one of the facade units; an expansion part having an expansion chamber formed therein; and a sealing part provided on the outside of the expansion part; wherein, as the expansion chamber expands, the volume of the expansion part increases, and the sealing part presses against an adjacent pair of perimeter frames to seal the gap. Claim 2 A facade unit sealing structure according to claim 1, wherein the gasket unit is formed along the extension direction of the rim frame and configured to seal the gap between the pair of facade units. Claim 3 A facade unit sealing structure according to claim 1, wherein the rim frame includes a coupling groove, and the fixing part is inserted into the coupling groove so that the gasket unit is fixed to the rim frame. Claim 4 In claim 1, the expansion chamber is a facade unit sealing structure that expands by the injection of gas or liquid, or increases in volume by foaming. Claim 5 In claim 1, the sealing part is a facade unit sealing structure formed of a foamed rubber, sponge rubber, or elastomeric material capable of elastic deformation. Claim 6 In claim 1, the expansion portion is a facade unit sealing structure formed of a rubber or elastomeric material capable of elastic deformation. Claim 7 In claim 1, the spaced-apart facade units include a first facade unit and a second facade unit, and the gasket unit is a facade unit sealing structure provided on the perimeter frame of each of the first facade unit and the second facade unit. Claim 8 A facade unit sealing structure according to claim 7, wherein gasket units provided in each of the first facade unit and the second facade unit are arranged to face each other, and the gasket units are configured to be compressed against each other according to the expansion of the expansion part. Claim 9 A facade unit sealing structure according to claim 7, wherein the gasket units provided in the first facade unit and the second facade unit, respectively, are arranged offset from each other, and the gasket units are configured to press the rim frame of the other facade unit according to the expansion of the expansion portion. Claim 10 A facade unit sealing structure according to claim 1, wherein the gasket unit is provided on the perimeter frame of one of the facade units, and one or more protrusions protruding toward the gasket unit are formed on the perimeter frame of the other facade unit. Claim 11 A facade unit sealing structure according to claim 10, wherein as the volume of the expansion portion increases, the sealing portion is pressed by the protrusion to seal the gap between the facade units. Claim 12 In claim 1, the expansion chamber is formed as a closed hollow structure and is a facade unit sealing structure extending in a tube shape along the extension direction of the rim frame. Claim 13 In claim 1, the expansion chamber is a facade unit sealing structure having a circular, elliptical, or polygonal cross-sectional shape. Claim 14 A facade unit sealing method for sealing a gap between a first facade unit and a second facade unit spaced apart from each other, comprising: a step of placing a gasket unit provided in the first facade unit or the second facade unit at a position corresponding to the gap; and a step of sealing the gap by expanding the expansion chamber of the gasket unit so that the gasket unit pressurizes the gap between the first facade unit and the second facade unit.

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