A fire barrier seal that expands upon exposure to heat

Abstract

The utility model discloses a kind of fireproof sealing strips that swell when heated, relate to sealing rubber strip field, including seal, it is U-shaped;Stress groove, it is set up on seal, the stress groove is V-shaped;Shaping part, it is set on seal, the shaping part is arranged along seal length direction;The fireproof sealing strip that swells when heated, initial sealing is provided by U-shaped seal wrapping door and window edge, its built-in V-shaped stress groove can effectively release internal stress when bending, prevent edge and corner warping deformation, ensure that sealing strip form is neat when high temperature expansion;Shaping part provides sustained compression force when installing, avoid artificial pressing and keep overall structure stable;Expansion cavity directional expansion after being heated enhances sealing, cooperate with glue pouring groove and overflow groove design, make bonding glue fill even and attachment area increase, finally realize the double effect of beautiful and smooth in daily use and reliable smoke prevention under high temperature fire.

Description

Technical Field

[0001] This utility model relates to sealing strip technology, specifically to a fireproof sealing strip that expands when heated. Background Technology

[0002] Fireproof sealing strips are a key sealing material with fireproof function. Through the dual effects of physical barrier and chemical flame retardancy, they effectively prevent the spread of flames, high-temperature gases and smoke when a fire occurs, buying valuable time for personnel evacuation and fire rescue, while protecting the building structure and internal equipment from fire damage.

[0003] When existing fireproof sealing strips are used, the sealing strips need to be bent when they are bonded to the corners of doors and windows. The edges of the bent sealing strips are squeezed and expanded, causing them to curl up. This affects the appearance during daily use, and when exposed to high temperatures, the deformation of the sealing strips will be further aggravated. The curled-up parts can no longer block the entry of smoke, affecting the safety of use. Utility Model Content

[0004] The purpose of this invention is to provide a fireproof sealing strip that expands when heated, in order to solve the problem that in the prior art, when the sealing strip is bonded and fixed at the corner of a door or window, it needs to be bent. The edge of the bent sealing strip is squeezed and expanded, causing it to curl up. This affects the aesthetics during daily use, and when exposed to high temperatures, it will further exacerbate the deformation of the sealing strip. The curled part can no longer block the entry of smoke, affecting the safety of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fireproof sealing strip that expands upon heating, comprising:

[0006] The seal is U-shaped;

[0007] Stress grooves are formed on the seal, and the stress grooves are V-shaped.

[0008] A molded part is disposed on the seal, and the molded part is arranged along the length direction of the seal;

[0009] An expansion cavity is formed inside the seal and is located above the stress groove;

[0010] A glue-filling groove is located inside the seal;

[0011] An overflow groove is located inside the seal and is connected to the glue-filling groove.

[0012] The seal 21 has a U-shaped design, which can wrap around the edge of the object to be sealed, such as the door frame or the side of the glass, to provide an initial sealing effect. The seal 21 is made of EPDM rubber, and the expansion chamber 4 is filled with air or graphite. When heated, the expansion chamber 4 expands and tightly seals the edge of the door or window, reducing the passage of particulate gases produced by combustion. The stress groove 22 is V-shaped and is formed on the seal 21. Its V-shaped structure can concentrate and release the internal stress generated by the seal 21 during the thermal expansion process. When installed on the door or window and passing through the corner, the V-shaped stress groove 22 allows part of the seal 21 to be bent, reducing the problem of twisting and warping of the edge of the seal 21 at the bend, while preventing irregular deformation or cracking of the seal 21, ensuring that the expansion direction is controllable and uniform. The shaping part 6 is set on the seal 21 and arranged along the length direction, providing structural support and shape retention. During installation, it can clamp the surface of the door and window, and maintain a certain pressure during bonding. Therefore, no additional pressing is required from the worker during the bonding process. At the same time, it helps the seal 21 maintain its overall shape when heated, avoiding twisting or collapse. The expansion cavity 4 is opened inside the seal 21 and is located above the stress groove 22. When heated, the expansion material in the expansion cavity 4 expands rapidly, pushing the seal 21 to expand outward and enhancing the sealing tightness. The glue filling groove 31 is opened inside the seal 21 and is used to inject sealant or adhesive material to ensure that the material is evenly filled and distributed. The overflow groove 32 is opened inside the seal 21 and is connected to the glue filling groove 31, allowing excess sealant to overflow. When using sealant for bonding, the adhesive is injected into the glue filling groove 31 with a glue gun. Pressing the side of the seal 21, the overflowing glue overflows through the overflow groove 32, increasing the bonding area and ensuring that the material is completely filled during bonding.

[0013] Furthermore, connectors are bonded and fixedly connected to both sides of the seal in the width direction, and the two sides of the connectors are used to connect the seal.

[0014] Furthermore, a number of reinforcing ribs are fixedly installed on the inner side of the seal along the length direction, and the reinforcing ribs are located between the expansion cavity and the molding part.

[0015] Furthermore, the sealing element has an installation cavity along its length, and the molded part is installed inside the installation cavity.

[0016] Furthermore, the reinforcing rib is made of metal.

[0017] Furthermore, the shaped part is U-shaped, and the material of the shaped part is a thin metal sheet.

[0018] Compared with existing technologies, this utility model provides a heat-expanding fireproof sealing strip. It provides an initial seal by wrapping the edges of doors and windows with a U-shaped sealing element. Its built-in V-shaped stress groove can effectively release internal stress during bending, prevent corner warping and deformation, and ensure that the sealing strip has a regular shape when it expands at high temperature. The molded part provides continuous clamping force during installation, avoiding manual pressing and maintaining the stability of the overall structure. The expansion chamber expands in a directional manner after being heated to enhance the sealing performance. Combined with the design of the glue filling groove and overflow groove, the adhesive is filled evenly and the adhesion area is increased. Finally, it achieves the dual effect of beautiful flatness in daily use and reliable smoke prevention under high temperature fire. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the overall structure provided for an embodiment of the present utility model;

[0022] Figure 3 This is a partial sectional view of the overall structure provided in an embodiment of the present utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of the sealing element provided in an embodiment of the present utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Connector; 21. Seal; 22. Stress groove; 31. Glue filling groove; 32. Overflow groove; 4. Expansion cavity; 5. Reinforcing rib; 6. Molded part; 7. Mounting cavity. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1:

[0028] Please see Figures 1 to 4 A fire-resistant sealing strip that expands when heated, comprising:

[0029] Seal 21 is U-shaped;

[0030] Stress groove 22 is formed on seal 21, and stress groove 22 is V-shaped;

[0031] A molding part 6 is disposed on the sealing part 21 and is arranged along the length direction of the sealing part 21;

[0032] Expansion cavity 4 is formed inside the seal 21 and is located above the stress groove 22;

[0033] The glue-filling groove 31 is located inside the seal 21;

[0034] An overflow groove 32 is formed inside the seal 21 and is connected to the glue filling groove 31.

[0035] Under the existing technology, when the sealing strip is bonded and fixed at the corner of the door or window, it needs to be bent. The edge of the bent sealing strip is squeezed and expanded, causing it to curl up. This affects the appearance during daily use, and when exposed to high temperatures, it will further aggravate the deformation of the sealing strip. The curled part can no longer block the entry of smoke, affecting the safety of use.

[0036] This solution addresses the aforementioned problems through the following means: The sealing element 21 is U-shaped, allowing it to wrap around the edge of the object requiring sealing, such as a door frame or glass edge, providing an initial seal. The sealing element 21 is made of EPDM rubber, and the expansion chamber 4 contains air or graphite. When heated, the expansion chamber 4 expands, tightly sealing the edges of doors and windows, reducing the passage of particulate gases produced during combustion. The stress groove 22 is V-shaped and located on the sealing element 21. Its V-shaped structure concentrates and releases the internal stress generated during the thermal expansion of the sealing element 21. When installed on doors and windows at corners, the V-shaped stress groove 22 allows part of the sealing element 21 to bend, mitigating the problem of edge warping at bends and preventing irregular deformation or cracking, ensuring controllable and uniform expansion direction. The shaping element 6 is set on the sealing element 21 and arranged along its length, providing structural support. The structure provides support and shape retention, clamping the door and window surface during installation and maintaining a certain clamping force during bonding, eliminating the need for additional pressing by workers. It also helps maintain the overall shape of the seal 21 when heated, preventing twisting or collapse. The expansion cavity 4 is located inside the seal 21 and above the stress groove 22. When heated, the expansion material rapidly expands within the expansion cavity 4, pushing the seal 21 outwards and enhancing sealing tightness. The glue-filling groove 31 is located inside the seal 21 for injecting sealant or adhesive material, ensuring uniform filling and distribution. The overflow groove 32 is located inside the seal 21 and communicates with the glue-filling groove 31, allowing excess sealant to overflow. When using sealant for bonding, the adhesive is injected into the glue-filling groove 31 using a glue gun, and the side of the seal 21 is pressed. The overflowing adhesive overflows through the overflow groove 32, increasing the bonding area and ensuring complete material filling during bonding.

[0037] In one embodiment of the present invention, a connector 1 is bonded and fixedly connected to both sides of the sealing member 21 in the width direction, and the two sides of the connector 1 are used to connect the sealing member 21.

[0038] The connector 1 is bonded and fixed to both sides of the seal 21 in the width direction. It is used to connect the seal 21 with other structures, so that the sealing strip is arranged in an alternating manner with the seal 21 and the connector 1. At the same time, it ensures that the sealing strip will not shift or fall off due to internal pressure when it expands due to heat, thereby maintaining the continuity and reliability of the seal. Meanwhile, the bonding design of the connector 1 enhances the overall structural strength.

[0039] In one embodiment of this utility model, a plurality of reinforcing ribs 5 are fixedly installed on the inner side of the sealing member 21 along the length direction, and the reinforcing ribs 5 are located between the expansion cavity 4 and the molding member 6.

[0040] The reinforcing rib 5 is fixedly installed on the inner side along the length of the seal 21 and is located between the expansion cavity 4 and the molding part 6. When the seal 21 expands due to heat, the reinforcing rib 5 provides additional structural strength and support, preventing the seal 21 from being excessively deformed or damaged due to expansion force, ensuring that the expansion process is uniform and controllable, and helping to disperse internal stress, thereby improving the durability and stability of the fireproof sealing strip.

[0041] In one embodiment of the present invention, the sealing member 21 has an installation cavity 7 along its length, and the molding member 6 is installed inside the installation cavity 7.

[0042] The mounting cavity 7 is opened along the length of the seal 21. The molded part 6 is fixedly installed inside the mounting cavity 7, so that the molded part 6 is firmly accommodated in the seal 21, providing a stable shape retention function, preventing the molded part 6 from shifting when heated or during installation, and ensuring that the seal 21 maintains the preset U-shaped structure when it expands, thereby optimizing the sealing effect and overall performance.

[0043] In one embodiment of this utility model, the reinforcing rib 5 is made of metal.

[0044] The reinforcing rib 5 is made of metal, which has high strength and heat resistance. When the seal 21 is heated, the metal reinforcing rib 5 can withstand the high temperature environment and maintain the structural integrity, preventing the seal 21 from softening or deforming excessively due to heat. This ensures that the fireproof sealing strip can work reliably for a long time under fire conditions and enhances its resistance to pressure and deformation.

[0045] In one embodiment of this utility model, the shaping part 6 is U-shaped and the material of the shaping part 6 is a thin metal sheet.

[0046] The molding part 6 is U-shaped and made of thin metal sheet. The U-shaped design matches the shape of the seal 21, providing uniform support and guidance. The thin metal sheet is flexible and has high strength. It will not melt or lose its shape when heated, thus maintaining the overall structure of the seal 21, guiding the direction of expansion, and enhancing the durability and fire resistance of the sealing strip.

[0047] Working principle: In use, the U-shaped structure of the sealant 21 is first wrapped around the edge of the door or window that needs to be sealed, such as the door frame or the side of the glass, to provide an initial sealing effect; the V-shaped stress groove 22 opened on the sealant 21 allows the sealant 21 to release internal stress when bent, preventing edge warping; the molded part 6 is fixed to the sealant 21 through the mounting cavity 7 and is arranged along the length direction. During installation, it provides clamping force by clamping the surface of the door or window, without the need for additional pressing by the worker; during installation, the adhesive is injected into the glue-filling groove 31 using a glue gun, and the sides of the sealant 21 are pressed. Excess glue overflows through overflow groove 32, increasing the bonding area; connector 1 is bonded and fixed to both sides of the width direction of seal 21 for connecting other structures; reinforcing rib 5 is fixedly installed on the inner side along the length direction of seal 21, located between expansion cavity 4 and molding part 6, providing structural support; when heated, the air or graphite in expansion cavity 4 expands, pushing seal 21 to expand outward, enhancing the sealing tightness. At the same time, stress groove 22, molding part 6 and reinforcing rib 5 work together to ensure that seal 21 maintains its shape, preventing twisting or cracking, and achieving fireproof sealing.

[0048] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fire-resistant sealing strip that expands upon heating, characterized in that, include: The seal (21) is U-shaped; Stress groove (22) is formed on the seal (21), and the stress groove (22) is V-shaped; A molding part (6) is disposed on the seal (21), the molding part (6) being arranged along the length direction of the seal (21); An expansion cavity (4) is formed inside the seal (21) and is located above the stress groove (22); A glue-filling groove (31) is provided inside the seal (21); An overflow groove (32) is provided inside the seal (21) and communicates with the glue filling groove (31).

2. The fire-resistant sealing strip that expands upon heating according to claim 1, characterized in that, The sealing element (21) is bonded and fixedly connected to the connecting elements (1) on both sides in the width direction. The connecting elements (1) are used to connect the sealing element (21) on both sides.

3. The fire-resistant sealing strip that expands upon heating according to claim 1, characterized in that, The sealing element (21) has several reinforcing ribs (5) fixedly installed on its inner side along its length direction. The reinforcing ribs (5) are located between the expansion cavity (4) and the molding part (6).

4. The fireproof sealing strip that expands upon heating according to claim 1, characterized in that, The sealing element (21) has an installation cavity (7) along its length, and the molding element (6) is installed inside the installation cavity (7).

5. A fireproof sealing strip that expands upon heating according to claim 3, characterized in that, The reinforcing rib (5) is made of metal.

6. The fire-resistant sealing strip that expands upon heating according to claim 1, characterized in that, The shaped part (6) is U-shaped and is made of metal sheet.

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