Building exterior structure using an integrated unit of thermal insulation material

Abstract

The present invention provides a building external structure using a thermal insulation material integrated unit for fixing a thermal insulation material integrated unit to an external wall of a building, the external structure including: a plurality of thermal insulation material integrated units continuously arranged in a vertical direction and a horizontal direction and including a frame, a functional part fixed to the frame, and a thermal insulation part; and a plurality of horizontal thermal insulation units including a hollow horizontal frame and a horizontal thermal insulation part provided inside the horizontal frame, extending in the horizontal direction to block heat transfer through a gap between the thermal insulation material integrated units adjacent in the vertical direction, and supporting an upper end of a lower thermal insulation material integrated unit and a lower end of an upper thermal insulation material integrated unit of two thermal insulation material integrated units adjacent in the vertical direction in a state of being fixed to the external wall in a form spaced apart from each other in the vertical direction.

Description

Technical Field

[0001] This invention relates to an external building structure using an integrated unit of thermal insulation material. Background Technology

[0002] Building exterior materials are used to enhance the external function or aesthetics of buildings, with insulation materials placed between the building's exterior walls and the exterior materials. Typically, insulation materials are installed on the exterior walls first, followed by the exterior materials on the outside of the insulation. Therefore, in the past, the separate installation of exterior materials and insulation materials resulted in cumbersome construction and project delays.

[0003] Existing technical documents

[0004] Patent documents

[0005] Korean Patent No. 1664359 (Title: Fixing Device for Red Ceramic Bricks for Building)

[0006] Korean Patent No. 1334320 (Title: Terracotta Panel Fixing Device for Buildings)

[0007] Korean Patent Publication No. 2022-0037689 (Title: External Material Support Structure for Buildings) Summary of the Invention

[0008] The present invention addresses the problems of the prior art as described above. The object of the present invention is to provide an external building structure using an integrated unit of thermal insulation material, which enables simpler construction.

[0009] According to an embodiment of the present invention for achieving the above-mentioned objective, the external building structure using integrated thermal insulation material units is used to fix integrated thermal insulation material units to the exterior wall of a building. The external structure includes: a plurality of integrated thermal insulation material units, continuously arranged along the vertical and horizontal directions, and including a frame, functional components fixed to the frame, and thermal insulation components; and a plurality of horizontal thermal insulation units, including a hollow horizontal frame and horizontal thermal insulation components disposed inside the horizontal frame, extending along the horizontal direction to block heat transfer formed through gaps between adjacent integrated thermal insulation material units along the vertical direction, and in a state where they are fixed to the exterior wall in a vertically spaced manner, supporting the upper end of the lower integrated thermal insulation material unit and the lower end of the upper integrated thermal insulation material unit of two adjacent integrated thermal insulation material units along the vertical direction.

[0010] In one embodiment of the present invention, the functional component is fixed at the front end of the frame in an exposed manner, and the heat insulation component is fixed at the rear end of the frame in a manner that is spaced apart from the functional component along the front-back direction.

[0011] In one embodiment of the present invention, an air intake and an exhaust port are formed on the bottom and top surfaces of the frame for air to enter and exit the inside and outside of the frame, and a flow path is formed inside the frame to allow air to flow through the air intake and exhaust ports to enter and exit the inside and outside of the frame.

[0012] In one embodiment of the present invention, the integrated heat insulation material unit further includes a blocking component, which is fixed inside the frame corresponding to the functional component and the heat insulation component to block the heat insulation component from contacting the air flowing through the flow path.

[0013] In one embodiment of the present invention, the flow path is formed between the back surface of the functional component and the front surface of the blocking component, and the blocking component is inclined so that the flow cross-sectional area of ​​the flow path decreases from the intake port to the exhaust port.

[0014] In one embodiment of the present invention, the frame includes: an upper frame, forming the appearance of the upper part of the upper surface and the rear surface of the frame, for supporting the upper ends of the functional component and the heat insulation component; a lower frame, forming the appearance of the lower part of the bottom surface and the rear surface of the frame, for supporting the lower ends of the functional component and the heat insulation component; and an intermediate frame, forming the remaining appearance of the rear surface of the frame, for connecting the upper frame and the lower frame, wherein the height of the frame can be changed according to the height of the intermediate frame.

[0015] In one embodiment of the present invention, the frame is provided with: a first locking hook, disposed on the upper part of the rear surface of the frame and opening downward; and a second locking hook, disposed on the lower part of the rear surface of the frame and opening downward. The horizontal frame is formed with: a first locking groove, disposed on the lower part of the horizontal frame, opening forward to hang the first locking hook of the lower integrated insulation material unit of two vertically adjacent integrated insulation material units; and a second locking groove, disposed on the upper part of the horizontal frame, opening upward to hang the first locking hook of the lower integrated insulation material unit of two vertically adjacent integrated insulation material units. In order to place the second locking hook of the upper integrated insulation material unit in the above-mentioned integrated insulation material unit directly above the second locking hook while the first locking hook is inserted into the first locking groove, the integrated insulation material unit is moved from front to back, and then moved from top to bottom to hook the first locking hook and the second locking hook respectively into the first locking groove of the upper horizontal insulation unit and the second locking groove of the lower horizontal insulation unit in two adjacent horizontal insulation units along the vertical direction.

[0016] According to one embodiment of the present invention, a plurality of vertical insulation units are further included, each comprising a hollow vertical frame and a vertical insulation component disposed inside the vertical frame. The components extend in the vertical direction to block heat transfer formed through gaps between adjacent integral insulation material units in the horizontal direction. The horizontal insulation units are fixed to the exterior wall in a state where they are spaced apart from each other in the horizontal direction.

[0017] In one embodiment of the present invention, the horizontal frame is provided with: a first fastening flange extending downward from the rear end of the bottom surface of the horizontal frame to allow fasteners fastened to the vertical frame to pass through; a second fastening flange extending upward from the rear end of the upper surface of the horizontal frame to allow fasteners fastened to the vertical frame to pass through; a first locking protrusion including a horizontal extension extending forward from the lower end of the first fastening flange and a vertical extension extending upward from the front end of the horizontal extension, engaging with the upper end of the lower integrated thermal insulation material unit of the two adjacent integrated thermal insulation material units along the vertical direction; and a second locking protrusion extending upward from the front end of the upper surface of the horizontal frame to engage with the lower end of the upper integrated thermal insulation material unit of the two adjacent integrated thermal insulation material units along the vertical direction.

[0018] In one embodiment of the present invention, a first locking groove is formed by the bottom surface of the horizontal frame, the front surface of the first fastening flange, and the upper and rear surfaces of the first locking protrusion, for hanging the upper end of the lower integrated thermal insulation material unit in two adjacent integrated thermal insulation material units along the vertical direction. A second locking groove is formed by the upper surface of the horizontal frame, the front surface of the second fastening flange, and the rear surface of the second locking protrusion, for hanging the lower end of the upper integrated thermal insulation material unit in two adjacent integrated thermal insulation material units along the vertical direction.

[0019] In one embodiment of the present invention, at least a portion of the first fastening flange and the second fastening flange are exposed forward.

[0020] The effects of the invention

[0021] The external building structure using an integrated thermal insulation unit according to embodiments of the present invention can be expected to achieve the following effects.

[0022] Firstly, in embodiments of the present invention, the thermal insulation component is fixed to the exterior wall of the building as a unit integrated with the functional components. Therefore, in embodiments of the present invention, simpler construction and a shorter construction period can be achieved by minimizing on-site construction work.

[0023] Furthermore, in embodiments of the present invention, a flow path is formed to allow air to effectively flow into the interior of the integrated insulation material unit. Therefore, embodiments of the present invention ensure the operational reliability of various functional components, particularly components requiring cooling such as solar panels.

[0024] Furthermore, in embodiments of the present invention, the phenomenon of moisture flowing in via the flow path transferring to the heat insulation component is prevented by a blocking component. Therefore, through embodiments of the present invention, damage to the heat insulation component can be prevented.

[0025] Furthermore, in embodiments of the present invention, horizontal and vertical insulation units block heat transfer through gaps between adjacent integral insulation material units. Therefore, according to embodiments of the present invention, overall insulation performance can be improved.

[0026] Furthermore, in embodiments of the present invention, the thermal insulation component is fixed to the exterior wall or other units by being fixed to a separate frame, i.e., formed as an integrated thermal insulation material unit, a horizontal thermal insulation material unit, and a vertical thermal insulation material unit, rather than being directly fixed to the exterior wall. Therefore, through embodiments of the present invention, compared with the prior art of directly fixing foam-shaped external materials to the exterior wall, a firm fixation and support of the external materials can be achieved. Attached Figure Description

[0027] Figure 1 This is a longitudinal sectional view of an external building structure using an integrated unit of thermal insulation material, according to an embodiment of the present invention.

[0028] Figure 2 A cross-sectional view is shown to illustrate an embodiment of the present invention. Detailed Implementation

[0029] The following will describe in detail, with reference to the accompanying drawings, an external building structure using an integrated unit of thermal insulation material according to an embodiment of the present invention.

[0030] Figure 1 To illustrate a longitudinal sectional view of an external building structure using an integrated unit of thermal insulation material according to an embodiment of the present invention, Figure 2 A cross-sectional view is shown to illustrate an embodiment of the present invention.

[0031] Reference Figure 1 as well as Figure 2 The external building structure 1 using an integrated thermal insulation unit in this embodiment of the invention is used to fix an integrated thermal insulation unit 100 to the exterior wall W of a building. It includes an integrated thermal insulation unit 100, a horizontal thermal insulation unit 200, and a vertical thermal insulation unit 300. The integrated thermal insulation unit 100 is supported by the horizontal thermal insulation unit 200, which is fixed to the vertical thermal insulation unit 300, which is also fixed to the exterior wall W.

[0032] More specifically, the aforementioned integrated thermal insulation unit 100 is composed of multiple units continuously arranged along the vertical and horizontal directions to form an overall grid shape. The aforementioned integrated thermal insulation unit 100 includes a frame 110, functional components 150, thermal insulation components 160, and blocking components 170.

[0033] The frame 110 is used to fix the functional component 150 and the heat insulation component 160, and in fact forms the appearance of the integrated heat insulation material unit 100. For example, the frame 110 can be formed into a polyhedral shape with an open front face.

[0034] An air intake 111 and an exhaust 113 are formed on the bottom and top surfaces of the frame 110. The air intake 111 and the exhaust 113 are places for air to enter and exit the interior and exterior of the frame 110, and can be arranged facing each other in the vertical direction.

[0035] Furthermore, a flow path 110P is provided inside the frame 110. The flow path 110P is the place where air flows in and out of the frame 110 through the intake port 111 and the exhaust port 113. In fact, the flow path 110P is formed by the rear surface of the functional component 150 and the front surface of the blocking component 170 extending in the vertical direction.

[0036] The frame 110 is provided with a first locking hook 115 and a second locking hook 117. The first locking hook 115 and the second locking hook 117 are used to support the integrated insulation material unit 100 from the horizontal insulation unit 200. The first locking hook 115 is located on the upper part of the rear surface of the frame 110, and the second locking hook 117 is located on the lower part of the rear surface of the frame 110. In this case, the first locking hook 115 and the second locking hook 117 open downwards respectively.

[0037] In this embodiment, the frame 110 may include multiple components, namely, an upper frame 120, a lower frame 130, and a middle frame 140. The upper frame 120 and the lower frame 130 respectively form the appearance of the upper part of the upper surface and the lower part of the rear surface of the frame 110, and the middle frame 140 forms the remaining appearance of the rear surface of the frame 110. Therefore, the frame 110 is generally formed with an open front surface. Of course, if the frame 110 includes additional side frames, its two side surfaces will also be covered. Moreover, the middle frame 140 connects the lower end of the upper frame 120 and the upper end of the lower frame 130, which form the appearance of the rear surface of the frame 110. Therefore, in this embodiment, for example, by setting the height of the middle frame 140 taking into account the height of the functional component 150 and / or the heat insulation component 160, the height of the frame 110 can be changed.

[0038] The upper frame 120 and lower frame 130, which form the appearance of the upper and lower surfaces of the frame 110, are respectively provided with a first upper fixing groove 121, a second upper fixing groove 122, and a third upper fixing groove 123, as well as a first lower fixing groove 131, a second lower fixing groove 132, and a third lower fixing groove 133. The first upper fixing groove 121, the second upper fixing groove 122, and the third upper fixing groove 123 are located at the front end, the rear end, and the middle of the upper frame 120, which forms the appearance of the upper surface of the frame 110. The first lower fixing groove 131, the second lower fixing groove 132, and the third lower fixing groove 133 are located at the front end, the rear end, and the middle of the lower frame 130, which forms the appearance of the bottom surface of the frame 110. The upper and lower ends of the functional component 150 are respectively inserted and fixed in the first upper fixing groove 121 and the first lower fixing groove 131. The upper and lower ends of the heat insulation component 160 are respectively inserted and fixed in the second upper fixing groove 122 and the second lower fixing groove 132. The upper and lower ends of the blocking component 170 are respectively inserted and fixed in the third upper fixing groove 123 and the third lower fixing groove 133.

[0039] In this embodiment, the first upper fixing groove 121 and the first lower fixing groove 131, as well as the second upper fixing groove 122 and the second lower fixing groove 132, are respectively arranged vertically at directly above and below each other. However, the third upper fixing groove 123 and the third lower fixing groove 133 are arranged vertically spaced apart from each other. As described below, the third upper fixing groove 123 is positioned in front of the third lower fixing groove 133, so that the blocking member 170 is arranged at an angle. Furthermore, the exhaust port 113 is provided between the first upper fixing groove 121 and the third upper fixing groove 123, and the intake port 111 is provided between the first lower fixing groove 131 and the second lower fixing groove 133.

[0040] Then, the upper and lower ends of the aforementioned functional component 150 are inserted into and fixed to the first upper fixing groove 121 and the first lower fixing groove 131, respectively. Therefore, the functional component 150 is exposed to the outside through the open front of the frame 110. The functional component 150 can be a solar panel for solar power generation or an external finishing material for a building.

[0041] The aforementioned heat insulation component 160 is used to block heat transfer between the interior and exterior of the building through the aforementioned exterior wall W. In this embodiment, the heat insulation component 160 is positioned behind the aforementioned functional component 150 by inserting its upper and lower ends into the aforementioned second upper fixing groove 122 and second lower fixing groove 132, respectively.

[0042] The aforementioned blocking member 170 is used to block the contact between the aforementioned heat insulation member 160 and the air flowing through the aforementioned flow path 110P. The upper end and lower end of the aforementioned blocking member 170 are respectively inserted into the aforementioned third upper fixing groove 123 and third lower fixing groove 133 to fix it inside the aforementioned frame 110 corresponding to the space between the aforementioned functional member 150 and the heat insulation member 160.

[0043] On the other hand, the third upper fixing groove 123 is disposed in front of the third lower fixing groove 133, and the upper end of the blocking member 170 is actually inclined forward compared to its lower end. However, since the flow path 110P is disposed between the back surface of the functional member 150 and the front surface of the blocking member 170, in this embodiment, it can be formed at an inclination to reduce the flow cross-sectional area of ​​the flow path 110P from the intake port 111 to the exhaust port 113. Therefore, in this embodiment, the air velocity flowing through the flow path 110P gradually increases, thereby effectively discharging air to the outside of the frame 110.

[0044] Then, the aforementioned horizontal insulation unit 200 extends horizontally to block heat transfer formed through the gaps between the vertically adjacent integrated insulation material units 100, and is configured as a plurality of units spaced apart from each other in the vertical direction. In fact, the aforementioned horizontal insulation unit 200 supports the upper end of the lower integrated insulation material unit 100 and the lower end of the upper integrated insulation material unit 100 of two vertically adjacent integrated insulation material units 100. In this embodiment, the aforementioned horizontal insulation unit 200 includes a horizontal frame 210 and a horizontal insulation component 220.

[0045] For example, the horizontal frame 210 can be formed into a hollow shape extending in the horizontal direction. The horizontal frame 210 is provided with a structure for fixing to the vertical insulation unit 300 and a structure for supporting the integrated insulation material unit 100.

[0046] First, the horizontal frame 210 is provided with a first fastening flange 211 and a second fastening flange 212 for fixing to the vertical insulation unit 300. The first fastening flange 211 extends downward from the rear end of the bottom surface of the horizontal frame 210, and the fasteners fastened to the vertical insulation unit 300 pass through the first fastening flange 211. Furthermore, the second fastening flange 212 extends upward from the rear end of the upper surface of the horizontal frame 210, and the fasteners fastened to the vertical insulation unit 300 pass through the second fastening flange 212.

[0047] Furthermore, the horizontal frame 210 is provided with a first locking protrusion 213 that engages with and supports the upper end of the lower integrated thermal insulation material unit 100 of the two adjacent integrated thermal insulation material units 100 along the vertical direction. In fact, the first locking protrusion 213 is inserted into the first locking hook 115 of the lower integrated thermal insulation material unit 100 of the two adjacent integrated thermal insulation material units 100 along the vertical direction.

[0048] In this embodiment, the first locking protrusion 213 includes a horizontal extension 213A and a vertical extension 213B. The horizontal extension 213A extends forward from the lower end of the first fastening flange 211, and the vertical extension 213B extends upward from the front end of the horizontal extension 213A. Therefore, a first locking groove 215 is formed by the bottom surface of the horizontal frame 210, the front surface of the first fastening flange 211, and the upper and rear surfaces of the first locking protrusion 213, for hanging the upper end of the lower integrated thermal insulation material unit 100 of the two vertically adjacent integrated thermal insulation material units 100.

[0049] Furthermore, a second locking protrusion 214 is provided on the horizontal frame 210 to engage and support the lower end of the upper integrated thermal insulation material unit 100 of the two adjacent integrated thermal insulation material units 100 along the vertical direction. In fact, the second locking protrusion 214 is inserted into the second locking hook 116 of the upper integrated thermal insulation material unit 100 of the two adjacent integrated thermal insulation material units 100 along the vertical direction.

[0050] The second locking protrusion 214 extends upward from the upper front end of the upper part of the horizontal frame 210. Therefore, a second locking groove 216 is formed by the upper part of the horizontal frame 210, the front part of the second fastening flange 212, and the rear part of the second locking protrusion 214, for hanging the lower end of the upper integrated thermal insulation material unit 100 of the two adjacent integrated thermal insulation material units 100 along the vertical direction.

[0051] In particular, in this embodiment, compared with the first locking protrusion 213 and the second locking protrusion 214, the first fastening flange 211 and the second fastening flange 212 extend further upward and downward, respectively. Therefore, at least a portion of the first fastening flange 211 and the second fastening flange 212 protrudes forward, thereby making it easier to fix the horizontal frame 210 to the vertical insulation unit 300.

[0052] Furthermore, compared to the first locking protrusion 213 and the second locking protrusion 214, the first fastening flange 211 and the second fastening flange 212 extend further upward and downward, thereby opening the first locking groove 215 forward and the second locking groove 216 upward and forward. Therefore, in this embodiment, by moving the integrated heat insulation material unit 100 from front to back, the first locking hook 115 and the second locking hook 117 are brought into the interior of the first locking groove 215 and the second locking groove 216. When the integrated heat insulation material unit 100 moves from top to bottom, the first locking hook 115 and the second locking hook 117 are respectively hooked in the first locking groove 215 of the upper horizontal heat insulation unit 200 and the second locking groove 216 of the lower horizontal heat insulation unit 200 of the two adjacent horizontal heat insulation units 200 along the vertical direction, thereby allowing the integrated heat insulation material unit 100 to be hooked on the horizontal heat insulation unit 200.

[0053] A sealing ring insertion groove is formed on the front surface of the horizontal frame 210. A sealing ring G for elastically supporting the rear surface of the integrated thermal insulation unit 100 is fixed in the sealing ring insertion groove, that is, a sealing ring G for elastically supporting the rear surface of the frame 110.

[0054] On the other hand, the aforementioned horizontal heat insulation member 220 is disposed inside the aforementioned horizontal frame 210. In effect, the aforementioned horizontal heat insulation member 220 blocks heat transfer formed through gaps between adjacent integral heat insulation material units 100 along the vertical direction. The aforementioned horizontal heat insulation member 220 can be a vacuum heat insulation material or the like with high heat insulation performance.

[0055] Then, the aforementioned vertical insulation unit 300 extends vertically to block heat transfer formed through the gaps between the horizontally adjacent integral insulation material units 100, and is fixed to the aforementioned exterior wall W in a manner that keeps them horizontally spaced from each other. In fact, the aforementioned horizontal insulation unit 200 is fixed to the aforementioned vertical insulation unit 300.

[0056] The aforementioned vertical insulation unit 300 includes a hollow vertical frame 310 and a vertical insulation component 320 disposed inside the vertical frame 310. The vertical frame 310 extends vertically and is fixed to the exterior wall W by additional fixing components. For example, a T-shaped rod B2 is fixed to an L-shaped rod B1 fixed to the exterior wall W, and the vertical frame 310 can be fixed to the T-shaped rod B2. Furthermore, as described above, the horizontal frame 210 of the horizontal insulation unit 200 is actually fixed to the vertical frame 310 by fasteners. The vertical insulation component 320 effectively blocks heat transfer through gaps formed between adjacent horizontally adjacent integral insulation material units 100, and is essentially similar to the horizontal insulation component 220.

[0057] In this embodiment, constructed in this way, in addition to the thermal insulation function performed by the aforementioned thermal insulation component 160, the integrated thermal insulation material unit 100 also performs additional functions through the aforementioned functional component 150. Therefore, in this embodiment, on-site construction for ensuring thermal insulation and additional functions can be minimized.

[0058] Furthermore, in this embodiment, the cooling of the functional component 150 is actually achieved by air flowing through the flow path 110P while simultaneously entering and exiting the interior and exterior of the frame 110 of the integrated insulation material unit 100. Therefore, in this embodiment, for example, when a solar panel is used as the functional component 150, its cooling effect can be expected.

[0059] In particular, the flow cross-sectional area of ​​the aforementioned flow path 110P decreases from the aforementioned air intake 111 towards the aforementioned exhaust 113, thereby effectively discharging air to the outside of the aforementioned frame 110 and ultimately effectively cooling the aforementioned functional component 150. Furthermore, by blocking the aforementioned heat insulation component 160 from contacting the air flowing through the aforementioned flow path 110P with the aforementioned blocking component 170, damage to the aforementioned heat insulation component 160 due to the transfer of moisture or the like in the air can be prevented.

[0060] Furthermore, in this embodiment, the horizontal insulation unit 200 and the vertical insulation unit 300 block heat transfer formed by gaps between the integral insulation material units 100 arranged vertically and horizontally. Therefore, this embodiment can also effectively prevent the reduction in insulation performance caused by gaps between the various unitized insulation components 160 due to construction problems.

[0061] Many other modifications can be made within the scope of the basic technical concept of this invention, and the scope of protection of this invention should be interpreted based on the appended claims.

Claims

1. An external building structure using an integrated thermal insulation unit for fixing the integrated thermal insulation unit to the exterior wall of a building, characterized in that, The aforementioned external structure includes: Multiple integrated insulation material units are continuously arranged along the vertical and horizontal directions, and include a frame, functional components fixed to the frame, and insulation components; and Multiple horizontal insulation units, including a hollow horizontal frame and horizontal insulation components disposed inside the horizontal frame, extend horizontally to block heat transfer formed through gaps between adjacent integrated insulation material units in the vertical direction. While fixed to the exterior wall in a vertically spaced configuration, they support the upper ends of the lower integrated insulation material unit and the lower ends of the upper integrated insulation material unit in two vertically adjacent integrated insulation material units. The functional components are fixed to the front end of the aforementioned frame in an exposed manner. The heat insulation component is fixed at the rear end of the frame in a manner that separates it from the aforementioned functional components along the front-to-back direction. The bottom and top surfaces of the aforementioned frame have air intake and exhaust ports for air to enter and exit the interior and exterior of the frame. An airflow path is formed inside the aforementioned frame to allow air to enter and exit the interior and exterior of the frame through the aforementioned air intake and exhaust ports. The aforementioned integrated insulation material unit also includes a blocking component, which is fixed inside the frame corresponding to the functional component and the insulation component to block the insulation component from contacting the air flowing through the flow path. The aforementioned flow path is formed between the back surface of the aforementioned functional component and the front surface of the aforementioned blocking component. The aforementioned blocking component is arranged at an angle so that the flow cross-sectional area of ​​the aforementioned flow path decreases from the aforementioned intake port toward the aforementioned exhaust port. The above framework includes: The upper frame forms the appearance of the upper part of the upper and rear surfaces of the aforementioned frame, and is used to support the upper ends of the aforementioned functional components and thermal insulation components. The lower frame, forming the lower portion of the bottom and rear surfaces of the aforementioned frame, supports the lower ends of the aforementioned functional components and thermal insulation components; and The intermediate frame, forming the remaining appearance of the rear face of the aforementioned frame, is used to connect the upper frame and the lower frame. The height of the aforementioned frame can be changed according to the height of the aforementioned intermediate frame.

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