External smoke-proof sealing mechanism mounted in center seam of double-leaf door

Abstract

The utility model relates to an external smoke-proof sealing mechanism installed in a center seam of a double-leaf door, which comprises an installation piece and a heat-resistant sealing piece connected on the installation piece, the installation piece comprises a shielding edge and a fixed edge extending from one side of the shielding edge to a direction perpendicular to the shielding edge, and the fixed edge is provided with a screw installation hole. The fixing edge penetrates through the screw installation hole through a screw and is installed on a side face frame of the door leaf, an installation groove extending in the length direction of the installation piece is formed in the inner end of the combination position of the fixing edge and the shielding edge, the heat-resisting sealing piece is made of elastic materials, and one end of the heat-resisting sealing piece is inserted into the installation groove. The other end of the heat-resisting sealing piece gets close to the shielding edge and is attached to the surface of the door leaf all the time. According to the fireproof smoke-isolating sealing strip disclosed by the utility model, an external installation mode is adopted, so that the whole installation is more convenient and quicker. When the door is closed, the sealing part is always sealed with the surface of the attached door leaf, and cold smoke can be prevented from spreading.

Description

Technical Field

[0001] The utility model relates to the technical field of doors, in particular to an external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door. Background Art

[0002] Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They are fireproof partitions with a certain degree of fire resistance, installed between fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the functions of ordinary doors, fire doors can also prevent the spread of fire and smoke, and can prevent the spread of fire within a certain period of time to ensure the evacuation of personnel.

[0003] For example, a combined sealing strip for a fireproof door disclosed in publication number CN 212507998 U includes a fireproof expansion sealing strip and a heat-resistant sealing strip connected to one side thereof, wherein the heat-resistant sealing strip includes a clamping portion and a sealing portion, wherein the clamping portion is connected or fitted to the fireproof expansion sealing strip, wherein the sealing portion is connected to the clamping portion, wherein the sealing portion is made of an elastic material, and wherein the angle between the bisecting surface of the sealing portion and the fireproof expansion sealing strip is 45°. The clamping portion and the fireproof expansion sealing strip of the above-mentioned sealing strip are connected together by gluing, and if the service life is too long, the glue will no longer be sticky, so that the clamping portion will fall off from the fireproof expansion sealing strip, and at this time, the above-mentioned sealing strip will not have the effect of sealing, fireproofing and smoke isolation; and after the above-mentioned sealing strip is subjected to high-temperature smoke, the glue applied between the clamping portion and the fireproof expansion sealing strip will melt, thereby causing the clamping portion to fall off from the fireproof expansion sealing strip and a gap to form, which will not achieve the sealing effect. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide an external smoke-proof sealing mechanism which has good sealing effect and is firm, reliable and easy to install and is installed in the middle seam of a double-leaf door.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The invention discloses an external smoke-proof sealing mechanism installed in the center seam of a double-leaf door, comprising a mounting part and a heat-resistant sealing part connected to the mounting part, wherein the mounting part comprises a shielding edge and a fixed edge extending from one side of the shielding edge in a direction perpendicular to the shielding edge, wherein the fixed edge is provided with a screw mounting hole, and the fixed edge is screwed through the screw mounting hole and installed on the side frame of the door leaf, and an mounting groove extending along the length direction of the mounting part is provided at the inner end of the junction of the fixed edge and the shielding edge, wherein the heat-resistant sealing part is made of elastic material, and one end of the heat-resistant sealing part is inserted into the mounting groove, and when the door is closed, the other end of the heat-resistant sealing part moves closer to the shielding edge and always fits with the surface of the door leaf.

[0007] Furthermore, the heat-resistant sealing component includes a snap-on portion and a sealing portion, the snap-on portion is inserted into the mounting groove, the snap-on portion and the sealing portion are integrally connected, and the angle between the bisecting surface of the sealing portion and the fixed edge is 45°. Under the action of external force, the sealing portion can move closer to the shielding edge and always fit with the surface applying the external force.

[0008] Furthermore, the fixing edge and the shielding edge are connected by integral molding, and the cross section of the mounting groove is C-shaped.

[0009] Furthermore, the cross section of the clamping portion is circular.

[0010] Furthermore, a recessed step portion is provided on the side surface of the fixed edge, and the step portion is perpendicular to the shielding edge.

[0011] Furthermore, the screw mounting hole is arranged on the step portion.

[0012] Furthermore, an inwardly curved arc surface is provided on the other side of the shielding edge.

[0013] Furthermore, the heat-resistant sealing component is made of silicone rubber.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] Firstly, the utility model is an external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door. Its mounting piece and heat-resistant sealing piece adopt a plug-in connection structure, which will not cause its sealing performance to deteriorate due to the problem of service life, and has a good use effect. The plug-in connection structure makes the heat-resistant sealing piece and the mounting piece firm and reliable and easy to install.

[0016] Secondly, the utility model provides an external smoke-proof sealing mechanism installed at the center seam of a double-leaf door, in which a mounting piece is externally mounted at the center seam of the double-leaf door by means of screws, and the entire installation process is convenient and quick.

[0017] Thirdly, the heat-resistant seal in the utility model is made of silicone rubber, and the heat-resistant performance of silicone rubber is very outstanding, so that the external smoke-proof sealing mechanism can work for a long time at 180°C, and can withstand several weeks or longer at a temperature slightly higher than 200°C, and can instantly withstand high temperatures above 300°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a three-dimensional structural schematic diagram of an external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door.

[0019] Figure 2 The utility model is a top view structural schematic diagram of an external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door.

[0020] Figure 3 The utility model is a schematic diagram of the exploded structure of an external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below with reference to the embodiments given in the accompanying drawings.

[0022] like Figures 1 to 3 As shown, the present embodiment provides an external smoke-proof sealing mechanism installed in the center seam of a double-leaf door, comprising a mounting member 1 and a heat-resistant sealing member 2 connected to the mounting member 1. The mounting member 1 comprises a shielding edge 11 and a fixed edge 12 extending from one side of the shielding edge 11 in a direction perpendicular to the shielding edge 11. Specifically, a screw mounting hole 122 is provided on the fixed edge 12, and the fixed edge 12 is screwed through the screw mounting hole 122 and installed on the side frame of the door leaf. An installation groove 13 extending along the length direction of the mounting member 1 is provided at the inner end of the junction of the fixed edge 12 and the shielding edge 11. The heat-resistant sealing member 2 is made of elastic material. One end of the heat-resistant sealing member 2 is inserted into the installation groove 13, and when the door is closed, the other end of the heat-resistant sealing member 2 moves closer to the shielding edge 11 and always fits with the surface of the door leaf.

[0023] As described above, the heat-resistant seal 2 includes a clamping portion 21 and a sealing portion 22. The clamping portion 21 is inserted into the mounting groove 13, and the clamping portion 21 is integrally connected with the sealing portion 22. The angle between the bisecting surface of the sealing portion 22 and the fixed edge 12 is 45°. Under the action of external force, the sealing portion 22 can move closer to the shielding edge 11 and always fit the surface where the external force is applied.

[0024] As described above, the fixed edge 12 and the shielding edge 11 are connected by integral molding, the cross section of the mounting groove 13 is C-shaped, and the cross section of the clamping portion 21 is circular. Such a structural design prevents the clamping portion 21 from detaching from the mounting groove 13, and the sealing effect is better during use.

[0025] As described above, the side of the fixed edge 12 is provided with a recessed step portion 121, and the step portion 121 is perpendicular to the shielding edge 11. Specifically, the screw mounting hole 122 is provided on the step portion 121, and the mounting member 1 can be externally mounted on the middle seam of the double-leaf door by passing the screw through the screw mounting hole 122 and fixed by the screw, and the whole installation process is convenient and fast. Such a structural design allows the mounting member 1 to better fit the side frame of the door leaf and is more convenient to install.

[0026] As described above, the other side of the shielding edge 11 is provided with an inwardly curved arc surface 14. Such a structural design enables the sealing strip to be installed on the side frame of the door leaf while shielding the heat-resistant sealing member 2 and making the appearance of the sealing strip more beautiful.

[0027] As mentioned above, the heat-resistant seal 2 is made of silicone rubber. Specifically, the heat-resistant seal 1 made of silicone rubber has good heat resistance, has a good insulating and sealing effect on isolating medium-temperature smoke, and can work for a long time at 180°C, and can withstand several weeks or longer at a temperature slightly higher than 200°C, and can instantly withstand high temperatures above 300°C. Specifically, when in use, the heat-resistant seal 1 made of silicone rubber has anti-aging and corrosion resistance, which makes its service life longer, and during use, it has the advantages of small compression deformation, strong rebound ability, good non-sticky surface, and good air permeability.

[0028] The above is only a preferred embodiment of the present utility model, and it cannot be used to limit the scope of the present utility model. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the present utility model and the content of the utility model description are still within the scope of the present utility model patent.

Claims

1. An external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door, characterized in that: It includes a mounting part and a heat-resistant sealing part connected to the mounting part, the mounting part includes a shielding edge and a fixed edge extending from one side of the shielding edge in a direction perpendicular to the shielding edge, the fixed edge is provided with a screw mounting hole, the fixed edge passes through the screw mounting hole and is mounted on the side frame of the door leaf, and an mounting groove extending along the length direction of the mounting part is provided at the inner end of the junction of the fixed edge and the shielding edge, the heat-resistant sealing part is made of elastic material, one end of the heat-resistant sealing part is inserted into the mounting groove, and when the door is closed, the other end of the heat-resistant sealing part is close to the shielding edge and always fits with the surface of the door leaf.

2. According to claim 1, the external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door is characterized in that: The heat-resistant sealing component includes a clamping portion and a sealing portion, the clamping portion is inserted into the mounting groove, the clamping portion and the sealing portion are integrally connected, and the angle between the bisecting surface of the sealing portion and the fixed edge is 45°. Under the action of external force, the sealing portion can move closer to the shielding edge and always fit with the surface applying the external force.

3. According to claim 2, the external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door is characterized in that: The fixing edge and the shielding edge are connected by integral molding, and the cross section of the mounting groove is C-shaped.

4. According to claim 3, the external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door is characterized in that: The cross section of the clamping portion is circular.

5. According to claim 1, the external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door is characterized in that: A concave step portion is provided on the side surface of the fixed edge, and the step portion is perpendicular to the shielding edge.

6. According to claim 5, the external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door is characterized in that: The screw mounting hole is arranged on the step portion.

7. According to claim 1, the external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door is characterized in that: The other side of the shielding edge is provided with an inwardly curved arc surface.

8. According to claim 1, the external smoke-proof sealing mechanism installed in the middle seam of a double-leaf door is characterized in that: The heat-resistant sealing component is made of silicone rubber.

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