Floor finishing unit with fire resistance and heat insulation functions

Abstract

The present invention relates to a floor finishing unit having fire-resistant and heat-insulating functions that physically block the spread of flames and smoke to the upper floor in the event of a fire in the lower floor by sealing the inter-floor penetration hole of a building, and fundamentally prevent secondary fires by maintaining the surface temperature of the floor finishing plate at 180°C, which is the fire resistance certification standard, even when exposed to high heat in the lower floor by applying a combination of fire-resistant filler and heat-insulating material.

Description

Technology Field

[0001] The present invention relates to a floor finishing unit having fire-resistant and heat-insulating functions. Background Technology

[0003] The semiconductor and display industries form the core foundation of advanced electronic products, and various reaction gases and fluids are utilized to manufacture display devices such as LCDs (Liquid Crystal Displays) and OLEDs (Organic Light Emitting Diodes), as well as semiconductor chips.

[0004] In these manufacturing processes, a vacuum environment is essential to stably control chemical reactions inside the reaction chamber; accordingly, multiple vacuum pipes are installed in semiconductor and display manufacturing facilities to supply or discharge reaction gases.

[0005] Generally, the workshop where semiconductor display manufacturing equipment is installed is formed with a multi-layer structure, and through holes are provided in the floor panels partitioning each layer to allow vacuum pipes to pass through. Through these through holes, a reaction chamber installed in the upper floor panel and a vacuum pump located in the lower space are connected, thereby enabling a stable vacuum environment required for the manufacturing process.

[0006] However, these structural characteristics cause problems when unused vacuum pipe penetration holes occur. In other words, if penetration holes that are no longer in use are left abandoned, they can act as a pathway for flames to spread in the event of a fire, potentially seriously compromising the safety of the entire workplace.

[0007] To address this problem, a technology has recently been proposed to prevent the spread of fire by sealing penetration holes with floor finishing units. The floor finishing unit minimizes the spread of fire by mechanically blocking the penetration holes, thereby preventing communication between the upper and lower spaces.

[0008] However, existing finishing units had a structural limitation in that they could not completely block heat transfer. For example, if a fire occurs in the lower space and the temperature rises above a certain level, heat is transferred upward through the finishing unit, posing a risk that the fire will eventually spread to the upper space.

[0009] Therefore, floor finishing units require heat resistance and thermal insulation performance simultaneously, going beyond simple sealing functions. In particular, according to fire resistance standards, even if heated to a high temperature of about 1000°C from below for 2 hours, the temperature of the top must be maintained at 180°C or lower.

[0010] To meet these conditions, the finishing unit must be made of a refractory material capable of maintaining structural stability even in high-temperature environments, and at the same time, an insulating structure capable of effectively blocking heat transfer must be applied.

[0011] Currently, the development of floor finishing units equipped with such fire-resistant and thermal insulation performance is actively underway at semiconductor and display manufacturing sites. This goes beyond merely ensuring workplace safety; it plays a crucial role in preventing massive economic losses caused by fires that may occur on large-scale production lines. Furthermore, the application of finishing units that meet international safety standards and fire-resistant performance certifications is directly linked to strengthening the competitiveness of global semiconductor and display manufacturers.

[0012] In conclusion, while vacuum piping penetration holes in semiconductor and display manufacturing facilities are essential structural elements, unused penetration holes pose a problem as they can act as pathways for fire spread. To address this, the development of floor finishing units that meet fire resistance standards has established itself as a key task for ensuring safety and productivity in industrial sites, and future advancements in related technologies are expected to elevate the overall safety standards of the semiconductor and display manufacturing industries. The problem to be solved

[0014] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a floor finishing unit having fire-resistant and heat-insulating functions that physically blocks flames and toxic gases from moving to the upper floor in the event of a fire in the lower floor by sealing unused closed holes among the through holes formed in the floor surface.

[0015] In addition, the objective of the present invention is to provide a floor finishing unit having fire-resistant and heat-insulating functions that improves fire safety of the entire workplace by preventing high heat from being conducted upward along the fixed support rods through the heat-insulating material in the event of a fire in the lower layer, thereby preventing the temperature of the floor finishing plate from rising above the ignition point.

[0016] The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0018] A floor finishing unit having fire-resistant and heat-insulating functions according to the present invention for solving the above problem may include: a floor finishing plate that covers a through hole formed in the floor portion to physically block the upward movement of flames and smoke; a fixed support rod that is vertically fixed to the lower part of the floor finishing plate; a fire-resistant filler that is coupled to the fixed support rod to fill the internal space of the through hole and blocks heat transfer in the event of a fire; a lower support plate located below the fixed support rod inside the through hole to support the fire-resistant filler; a heat-insulating material that prevents heat transferred to the fixed support rod from being transferred to the floor finishing plate side; and a fixing bolt that fixes the lower support plate to the fixed support rod.

[0019] It includes a screw fixing part formed protruding from the lower central part of the floor finishing plate and fastened to a fixed support rod.

[0020] It includes a cylindrical lower tube formed to extend to a certain height at the lower part of the floor finishing plate and connected through a through hole.

[0021] The lower support plate includes a through hole formed in the center to be coupled with the fixed support rod; and a plurality of heat transfer holes formed annularly around the through hole to physically reduce the cross-sectional area of ​​the metal path through which heat is conducted to the fixed support rod.

[0022] It includes a sub-thermal insulation material located inside the above-mentioned fire-resistant filler and coupled in a direction orthogonal to the fixed support rod. Effects of the invention

[0024] According to the present invention, by combining a fire-resistant filler and a separate thermal insulation material and structurally improving the fixed support rods that serve as heat transfer paths, there is an effect of delaying and blocking the transfer of high heat from the lower portion to the floor finishing plate.

[0025] In addition, according to the present invention, the surface temperature of the floor finishing plate can be maintained at 180°C or lower in the event of a fire in the lower floor, thereby preventing the fire from spreading to combustible materials or equipment in the upper floor.

[0026] In addition, according to the present invention, the fire-resistant filler fills the through hole while the fixed support rod and the lower support plate are firmly combined, so there is an effect that they do not easily detach or break even under pressure or thermal shock during a fire. Brief explanation of the drawing

[0028] FIG. 1 is an exploded perspective view of a floor finishing unit having fire-resistant and heat-insulating functions according to one embodiment of the present invention. FIG. 2 is a cross-sectional view of a floor finishing unit having fire-resistant and heat-insulating functions according to one embodiment of the present invention. FIG. 3 is a cross-sectional view of a fixed support rod with a thermal insulation material coated on its outer surface according to one embodiment of the present invention. FIG. 4 is an installation diagram of a floor finishing unit having fire-resistant and heat-insulating functions according to one embodiment of the present invention. FIG. 5 is a cross-sectional view of a fixed support rod with a sub-thermal insulation material coupled thereto according to one embodiment of the present invention. FIG. 6 is a diagram showing a floor finishing unit having fire-resistant and heat-insulating functions according to one embodiment of the present invention installed in a multi-core sleeve. FIG. 7 is an exploded perspective view of a floor finishing unit having fire-resistant and heat-insulating functions according to another embodiment of the present invention. FIG. 8 is a cross-sectional view of a floor finishing unit having fire-resistant and heat-insulating functions according to another embodiment of the present invention. FIG. 9 is an installation diagram of a floor finishing unit having fire-resistant and heat-insulating functions according to another embodiment of the present invention. Specific details for implementing the invention

[0029] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable a person skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. It should also be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is limited only by the appended claims, including all equivalents to those claimed therein, provided appropriately described. Similar reference numerals in the drawings refer to the same or similar functions across various aspects.

[0030] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

[0031] First, FIG. 1 is an exploded perspective view of a floor finishing unit having fire-resistant and heat-insulating functions according to one embodiment of the present invention. FIG. 2 is a cross-sectional view of a floor finishing unit having fire-resistant and heat-insulating functions according to one embodiment of the present invention.

[0032] A floor finishing unit (100) having fire-resistant and heat-insulating functions according to one embodiment of the present invention may include a floor finishing plate (110), a fixed support rod (120), a fire-resistant filler (130), a lower support plate (140), a heat-insulating material (150), and a fixing bolt (160).

[0033] The above-mentioned floor finishing unit seals unused closed holes among the through holes where pipes are installed penetrating each side in a multi-story semiconductor production plant, thereby physically blocking flames and toxic gases from moving to the upper floors in the event of a fire on the lower floors.

[0034] The floor finishing plate (110) is formed of a plate having a predetermined thickness so as to completely cover and close the upper opening of the through hole (20) formed in the floor surface (C) of the building.

[0035] The floor finishing plate (110) above is preferably made of a metal material with excellent fire resistance and corrosion resistance (e.g., stainless steel, SUS 304, etc.) and must have sufficient structural strength to withstand upper loads (such as walking by workers) and minimize deformation caused by high heat in the event of a fire.

[0036] The diameter of the bottom finishing plate (110) is larger than the diameter of the through hole (20), and the edge portion of the bottom finishing plate (110) of the original plate may be placed overlapping the upper surface of the bottom layer (C) around the through hole (20).

[0037] A fixing hole (111) may be formed radially through the floor finishing plate (110). Accordingly, the floor finishing plate (110) can be firmly fixed to the floor surface through a fixing member (111A) while the floor finishing plate (110) is seated on the floor surface above the through hole (20). Here, the fixing member (111A) may be a screw or a bolt, and any means capable of fixing the floor finishing plate (110) can be applied without limitation.

[0038] A screw fixing part (112) may be formed on the lower part of the bottom finishing plate (110).

[0039] The above screw fixing part (112) may include an upper screw part (112A) and a screw groove (112B).

[0040] The upper screw portion (112A) is formed to protrude to a certain height from the lower part of the bottom finishing plate (110), and screw threads are formed on the outer surface.

[0041] The above screw groove (112B) is formed at the upper end of the fixed support rod (120) and is a groove into which the upper screw portion (112A) is fastened, and the inner surface of the screw groove (112B) is tapped.

[0042] The above fixed support rod (120) is a support that is vertically fixed to the lower center of the floor finishing plate (110).

[0043] The fixed support rod (120) provides structural bonding force so that the entire unit does not detach or deform even under pressure or impact acting from the bottom to the top during a fire.

[0044] The fixed support rod (120) accurately aligns and supports the fire-resistant filler (130) and the thermal insulation material (150) at the center of the through hole (20).

[0045] The upper part of the fixed support rod (120) can be fixed to the floor finishing plate (110), and the lower part can be fixed to the lower support plate (140).

[0046] A screw groove (112B) may be formed on the upper surface of the fixed support rod (120), and a fastening hole (121) may be formed on the lower surface.

[0047] The above fire-resistant filler (130) fills the internal space of the through hole (20). That is, the fire-resistant filler (130) is positioned between the bottom finishing plate (110) and the lower support plate (140) to fill the internal space of the through hole (20).

[0048] The fire-resistant filler (130) is formed as a donut-shaped or hollow block, and a connecting hole (131) into which a fixed support rod (120) is connected may be formed through the central part.

[0049] The fire-resistant filler (130) expands upon receiving heat during a fire, completely sealing the gap inside the through hole (20) and blocking the direct passage of flames. In addition, it delays the conduction and radiation of high heat for a long time, thereby suppressing the rise in temperature of the upper layer.

[0050] The fire-resistant filler (130) can be made of a composite material with a heat-activated foaming agent added to an inorganic material with excellent fire resistance, and can be made of an inorganic material such as calcium silicate, ceramic fiber, or lightweight concrete to maintain its shape and structural stability even at high temperatures.

[0051] When the blowing agent inside the refractory filler is heated above a certain activation temperature due to fire, it chemically decomposes and generates inert gases (e.g., carbon dioxide, ammonia). The bubbles generated at this time expand the volume of the filler by more than five times (foaming) and form a porous char layer. This char layer has excellent thermal insulation performance and prevents combustion when exposed to high temperatures even after foaming is complete.

[0052] In addition, the lower support plate (140) is fixed to the lower part of the fixed support rod (120) to support the fire-resistant filler (130).

[0053] The lower support plate (140) is a plate-shaped member located at the lowest part of the floor finishing unit. It is positioned in the lower space inside the through hole (20) to support the fire-resistant filler (130) and the entire upper structure from below, and combined with the fixed support rod (120) to serve as the lower anchor of the unit.

[0054] The lower support plate (140) is a part that is directly exposed to high temperatures of 1000 degrees or higher in case of fire, so it is made of a metal such as a thick steel plate or stainless steel with excellent high strength and heat resistance that can maintain sufficient structural support without deformation in a high-temperature environment.

[0055] The lower support plate (140) may include a through hole (141) and a heat transfer hole (142).

[0056] The through hole (141) is a hole that penetrates the center of the lower support plate (140) to be coupled with the fixed support rod (120). By fastening the fixing bolt (160) to the lower end of the fixed support rod (120) through the through hole (141), the bottom finishing plate (110) and the lower support plate (140) are firmly tensioned and coupled around the fixed support rod (120).

[0057] The above heat transfer holes (142) are formed in a circular shape around the through hole (141).

[0058] The heat transfer hole (142) physically reduces the cross-sectional area of ​​the metal path through which heat is conducted to the fixed support rod (120).

[0059] Heat is transferred to the refractory filler (130) through the heat transfer hole (142), and as the amount of metal in the lower support plate (140) itself decreases, the heat capacity that can be stored decreases, thereby weakening the ability to store and transfer heat when exposed to high temperatures.

[0060] In addition, the heat insulation material (150) blocks heat transferred to the fixed support rod (120) from being transferred to the floor finishing plate (110).

[0061] The thermal insulation material (150) is a thermal insulation layer placed between the fire-resistant filler (130) and the floor finishing plate (110), and the thermal insulation material (150) ultimately blocks conductive heat and radiant heat that have risen through the fire-resistant filler (130) from being directly transferred to the floor finishing plate (110).

[0062] The ultimate goal of the heat shield (150) is to ensure that the surface temperature of the floor finishing plate (110) remains below the flash point (standard 180°C) even when exposed to a flame of about 1000°C in the lower layer.

[0063] The thermal insulation material (150) must have low thermal conductivity even in a high-temperature environment and possess heat resistance and structural stability that can maintain its shape for a long time.

[0064] The thermal insulation material (150) may be any one of glass wool, calcium silicate board and construction binders such as cement, mortar, and concrete.

[0065] Glass wool is an inorganic insulation material manufactured based on glass fibers. When very fine glass fibers are intricately interwoven, numerous small air pockets are formed between the fibers, achieving low thermal conductivity and maximizing heat blocking performance.

[0066] Referring to FIG. 3, the heat-insulating material (150) may be a heat-insulating coating composition coated on the outer surface of the fixed support rod (120).

[0067] The heat-insulating coating composition comprises 7% by weight of zinc oxide (ZnO), 7% by weight of titanium dioxide (TiO2), 3% by weight of aluminum oxide (Al2O3), and 83% by weight of a main material resin composition, wherein the titanium dioxide consists of rutile and anatase in a weight ratio of 1:1, and the aluminum oxide has a diameter of 5 mm, and with respect to 100 parts by weight of the heat-insulating coating composition, 25-30% by weight of methyl methacrylate; 25-30% by weight of polypropylene glycol acrylate; 5-10% by weight of butyl acrylate; 4-5% by weight of polyoxypropylene glycerol triether; 0.1-1% by weight of lithium silicate; 1-2% by weight of surfactant; and 1-2% by weight of polycarboxylic acid-based fluidizer. 100 parts by weight of an auxiliary material resin composition consisting of 30 to 38 weight percent water may be added and mixed.

[0068] The heat-insulating coating composition of the above-mentioned heat-insulating material (150) is coated on the bottom surface of the floor finishing plate (110) and the bottom surface of the lower support plate (140) in addition to the fixed support rod (120) to effectively lower the heat conductivity.

[0069] In addition, the above fixing bolt (160) secures the lower support plate (140) to the fixing support rod (120).

[0070] The fixing bolt (160) passes through the through hole (141) of the lower support plate (140) and is fastened to the lower female thread of the fixing support rod (120). The fixing bolt (160) generates a strong compressive force between the floor finishing plate (110) and the lower support plate (140) with the fixing support rod (120) as the axis, thereby firmly integrating the floor finishing unit.

[0071] Referring to FIG. 4, the floor finishing unit (100) having fire-resistant and heat-insulating functions according to the present invention allows high-temperature heat to be directly transferred to the lower support plate (140) in the event of a fire in the lower layer, and the transferred heat is transferred to the fire-resistant filler (130) through the heat transfer hole (142).

[0072] The fire-resistant filler (130) expands upon receiving heat and simultaneously completely seals the gap inside the through hole (20), thereby blocking the direct passage of flames.

[0073] In addition, the heat insulation material (150) ultimately blocks conductive heat and radiant heat that have risen through the fire-resistant filler (130) from being directly transferred to the floor finishing plate (110).

[0074] Accordingly, even if exposed to a flame of about 1000°C in the lower layer, the surface temperature of the floor finishing plate (110) can be maintained below the flash point (standard 180°C) by the fire-resistant filler (130) and the heat-insulating material (150).

[0075] Additionally, referring to FIG. 5, it may include a sub-thermal insulation material (170) located inside the fire-resistant filler (130) and coupled in a direction orthogonal to the fixed support rod (120).

[0076] The above sub-thermal insulation material (170) can be placed inside the fire-resistant filler (130).

[0077] The sub-thermal insulation material (170) can be horizontally fixed to the center of the fixed support rod (120), and an annular coupling groove (171) can be formed in the fixed support rod (120). Accordingly, the sub-thermal insulation material (170) can be horizontally positioned by being coupled to the coupling groove (171).

[0078] Here, the fire-resistant filler (130) can be separated into an upper filler and a lower filler and filled into the through hole (20), thereby providing conditions that facilitate the attachment of the sub-thermal insulation material (170) to the fixed support rod (120).

[0079] The above sub-thermal insulation material (170) is located in the center of the fixed support rod (120) to minimize thermal conductivity.

[0080] Here, the fixed support rod (120) is configured separately into an upper support rod (120a) and a lower support rod (120b) to fix the sub-thermal insulation material (170).

[0081] The upper support rod (120a) is fixed to the screw fixing part (112) at the bottom of the floor finishing plate (110), and the lower support rod (120b) is positioned at the top of the lower support plate (140) and fixed through a fixing bolt (160).

[0082] The above sub-thermal insulation material (170) can be positioned and fixed between the upper support rod (120a) and the lower support rod (120b).

[0083] Screw joints (172) are formed on the upper and lower portions of the above-mentioned sub-thermal insulation material (170), and the screw joints (172) are fastened and fixed to screw holes formed in the upper support rod (120a) and the lower support rod (120b).

[0084] When a fire occurs in the lower layer, the fire-resistant filler (130) expands, and at the same time, the fire-resistant filler (130) expands to surround the sub-thermal insulation material (170), thereby filling the entire through hole (20). At this time, the conductive heat and radiant heat that have risen through the fixed support rod (120) are primarily blocked from being directly transferred to the floor finishing plate (110) through the sub-thermal insulation material (170), and the thermal insulation material (150) between the fire-resistant filler (130) and the floor finishing plate (110) finally blocks the conductive heat and radiant heat.

[0085] In addition, with reference to FIG. 6, the floor finishing unit of the present invention can also be applied to the ‘multi-core sleeve’ disclosed in Patent No. 10-2025-0161453.

[0086] To explain in detail, when the vacuum pipe is removed from the sleeve (200) installed in the through hole (20), only the sleeve (200) remains at the top of the through hole (20), and the inside of the through hole (20) becomes an empty closed hole.

[0087] In this state, as described above, a floor finishing plate (110) is placed on the floor surface (C) of the building, and a fixed support rod (120), a fire-resistant filler (130), a lower support plate (140), a thermal insulation material (150), and a fixing bolt (160) are placed inside the through hole (20) to complete the assembly.

[0088] Next, after placing the upper plate (300) on the upper part of the floor finishing plate (110), the upper plate (300) and the floor finishing plate (110) are fixed to the sleeve (200) through the fixing member (111A). Accordingly, the present invention provides versatility that maximizes the convenience of assembly and expands the range of use.

[0089] In addition, FIG. 7 is an exploded perspective view of a floor finishing unit (100') having fire-resistant and heat-insulating functions according to another embodiment of the present invention. FIG. 8 is a cross-sectional view of a floor finishing unit having fire-resistant and heat-insulating functions according to another embodiment of the present invention. FIG. 9 is an installation state view of a floor finishing unit having fire-resistant and heat-insulating functions according to another embodiment of the present invention.

[0090] Referring to FIGS. 7 to 9, a lower tube body (113) that is extended to a certain height at the bottom of the floor finishing plate (110) may be included.

[0091] That is, the lower pipe body (113) is integrally formed on the lower part of a floor finishing plate (110) having a predetermined thickness so as to completely cover and close the upper opening of the through hole (20) formed in the floor surface (C) of the building, and is positioned inside the through hole (20).

[0092] The lower part of the floor finishing plate (110) may be fixed in the same structure as the fixed support rod (120) described in one embodiment.

[0093] Based on the lower body (113), a fire-resistant filler (130) is filled on the outer side, and a thermal insulation material (150) can be filled on the inner side of the lower body (113).

[0094] Accordingly, the fire-resistant filler (130) is filled between the lower pipe body (113) and the through hole (20), and the thermal insulation material (150) is filled between the lower pipe body (113) and the fixed support rod (120). Here, the thermal insulation material (150) can be formed individually to fill the space between the lower pipe body (113) and the fixed support rod (120), or it can be formed separately in multiple pieces to fill the space.

[0095] A lower support plate (140) can be fixed to the lower part of the fixed support rod (120) by fastening a fixing bolt (160). The lower support plate (140) is located below the fixed support rod (120), the fire-resistant filler (130), and the thermal insulation material (150), and is fixed to the fixed support rod (120) through the fixing bolt (160) to support the fire-resistant filler (130) and the thermal insulation material (150).

[0096] The heat transfer hole (142) formed in the lower support plate (140) is located at the bottom of the refractory filler (130) so that heat can be transferred to the refractory filler (130).

[0097] With reference to FIG. 8, the floor finishing unit (100') configured as described above allows high-temperature heat to be directly transferred to the lower support plate (140) when a fire occurs in the lower layer, and the transferred heat is transferred to the fire-resistant filler (130) through the heat transfer hole (142).

[0098] The fire-resistant filler (130) receives heat and expands in the space between the lower pipe body (113) and the through hole (20), while simultaneously completely sealing the gap inside the through hole (20) and blocking the direct passage of flames.

[0099] In addition, the heat shield (150) ultimately blocks conductive heat and radiant heat that have risen through the lower support plate (140) from being directly transferred to the floor finishing plate (110).

[0100] Accordingly, even if exposed to a flame of about 1000°C in the lower layer, the surface temperature of the floor finishing plate (110) can be maintained below the flash point (standard 180°C) by the fire-resistant filler (130) and the heat-insulating material (150).

[0101] Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications are possible by those skilled in the art without departing from the essence of the invention as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. Explanation of the symbols

[0103] 100: Floor finishing unit 110: Floor finishing plate 111: Fixing hole 112: Screw fixing part 112A: Upper screw part 112B: Screw groove 113: Lower pipe body 120: Fixed support rod 130: Fire-resistant filler 140: Lower support plate 141: Through hole 142: Heat transfer hole 150: Thermal insulation material 160: Fixing bolt 170: Sub-thermal insulation 171: Connecting groove 172: Connecting screw part

Claims

Claim 1 A floor finishing plate (110) that covers a through hole (20) formed in a bottom portion (10) to physically block the upward movement of flames and smoke, and has a screw fixing portion (112) protruding from the lower central portion to be connected to a fixed support rod (120); a fixed support rod (120) that is vertically fixed to the lower portion of the floor finishing plate (110); a fire-resistant filling material (130) that is coupled to the fixed support rod (120) to fill the internal space of the through hole (20) and blocks heat transfer in the event of a fire; a lower support plate (140) that is located below the fixed support rod (120) inside the through hole (20) and supports the fire-resistant filling material (130); a heat-insulating material (150) that prevents heat transferred to the fixed support rod (120) from being transferred to the floor finishing plate (110); and a fixing bolt (160) that fixes the lower support plate (140) to the fixed support rod (120). The fixed support rod (120) includes a sub-thermal insulation material (170) located in the center of the fixed support rod (120) and having screw connection parts (172) formed on the upper and lower parts. The fixed support rod (120) is configured separately into an upper support rod (120a) and a lower support rod (120b) to fix the sub-thermal insulation material (170). The upper support rod (120a) is fixed to a screw fixing part (112) on the lower part of the floor finishing plate (110), and the lower support rod (120b) is located on the upper part of the lower support plate (140) and is fixed through a fixing bolt (160). The screw connection parts (172) are fixed by being fastened to screw fastening holes formed in the upper support rod (120a) and the lower support rod (120b). The fire-resistant filler (130) is configured separately into an upper filler and a lower filler, respectively, and is sub-attached to the fixed support rod (120). Providing conditions that facilitate the combination of the thermal insulation material (170). Floor finishing unit with fire-resistant and thermal insulation functions. Claim 2 delete Claim 3 A floor finishing unit having fire-resistant and heat-insulating functions according to claim 1, comprising a cylindrical lower tube body (113) that is formed to extend to a certain height at the lower part of the floor finishing plate (110) and connected to a through hole (20). Claim 4 A floor finishing unit having fire-resistant and heat-insulating functions according to claim 1, wherein the lower support plate (140) comprises: a through hole (141) formed through the central portion to be coupled with the fixed support rod (120); and a plurality of heat transfer holes (142) formed annularly around the through hole (141) to physically reduce the cross-sectional area of ​​the metal path through which heat is conducted to the fixed support rod (120). Claim 5 delete

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