Sealing installation structure in steel heat insulation fireproof door
By using a multi-directional interlocking connection and positioning structure, combined with a high-temperature resistant silicone layer, an intumescent fireproof layer, and a heat insulation buffer layer, the problem of unstable installation of the sealing strip is solved, achieving stable installation of the sealing strip and efficient heat insulation and fireproof performance of the fire door.
Patent Information
- Application Number
- CN202520912532.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-10
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-05-10
AI Technical Summary
The sealing strips of existing steel insulated fire doors are not securely installed, are prone to displacement or detachment, lack precise positioning and stability, and affect sealing performance and fireproof effect.
It adopts a multi-directional interlocking connection and positioning structure, combined with a high-temperature resistant silicone layer, an intumescent fireproof layer and a heat insulation buffer layer. It achieves stable installation of the sealing strip by connecting the horizontal, vertical and oblique interlocking blocks and slots, and by sliding connection between the positioning block and the limit block and the sliding rod tension spring.
It effectively prevents the sealing strip from shifting or falling off during the opening and closing of the door, ensuring a firm installation. It also has high temperature resistance, fire resistance, and heat insulation buffer properties, improving the heat insulation and fire protection effect of the fire door.
Smart Images

Figure CN223908109U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fireproof door technical field especially relates to a sealing installation structure in steel heat insulation fireproof door. BACKGROUND
[0002] Fireproof door is important fireproof separation facility in building fire safety system, can effectively block flame spread, heat transfer and smoke diffusion when fire occurs, gains precious time for personnel evacuation and fire rescue. Steel heat insulation fireproof door is widely used in various buildings owing to its high strength, strong durability and other characteristics.
[0003] In prior art, traditional sealing rubber strip usually only relies on simple card slot insertion or glue paste fixation, and horizontal displacement, gravity sagging or vibration falling off may occur in door body opening and closing process, which can affect the sealing performance of fireproof door, and further reduce its heat insulation and fireproof effect. Moreover, the structure of sealing rubber strip is single, and may not meet the performance requirements of high temperature resistance, fire prevention and heat insulation buffer, and lacks effective mechanism for accurate positioning and stability guarantee after installation, and needs to be improved. UTILITY MODEL CONTENTS
[0004] The utility model aims at solving the problems of sealing rubber strip installation in prior art, such as not firm, single performance, lack of accurate installation positioning and stability guarantee mechanism, and provides a sealing installation structure in steel heat insulation fireproof door.
[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a sealing installation structure in steel heat insulation fireproof door, including door frame, the surface hinge connection of door frame has fireproof door body, the front surface of fireproof door body is equipped with fireproof glass, the front surface of fireproof door body is equipped with pull rod, the side surface of door frame is equipped with sealing rubber strip, the side surface of sealing rubber strip is fixedly installed with horizontal card block, longitudinal card block and inclined card block, the side surface of sealing rubber strip is fixedly installed with positioning block, the surface of positioning block is equipped with limit hole, the side surface of sealing rubber strip is equipped with movable slot, the inside of door frame is equipped with horizontal card slot, longitudinal card slot and inclined card slot, the side surface of door frame is equipped with positioning hole, the inside of door frame is slidably connected with limit block, the inside of door frame is fixedly installed with slide rod, the surface of slide rod is equipped with tension spring.
[0006] Preferably, the sealing rubber strip includes a high-temperature-resistant silicone layer, an expanded fireproof layer, and a heat insulation buffer layer. The high-temperature-resistant silicone layer is located on the outer side of the rubber strip, and the heat insulation buffer layer is located on the inner side of the rubber strip.
[0007] Preferably, the horizontal card block, the longitudinal card block, and the inclined card block are respectively connected with the horizontal card slot, the longitudinal card slot, and the inclined card slot.
[0008] Preferably, the positioning block is in sliding connection with the positioning hole, and the positioning block is located at the upper and lower ends of the sealing rubber strip.
[0009] Preferably, the limiting block is in sliding connection with the limiting hole, and the limiting block is in sliding connection with the sliding rod.
[0010] Preferably, one end of the tension spring is fixedly connected with the side surface of the limiting block, and the other end of the tension spring is fixedly connected with the side surface of the door frame.
[0011] Compared with the prior art, the sealing installation structure has the advantages and positive effects that,
[0012] 1. In the sealing installation structure, the lateral clamping block, the longitudinal clamping block and the oblique clamping block on the side surface of the sealing rubber strip are respectively clamped and connected with the lateral clamping groove, the longitudinal clamping groove and the oblique clamping groove on the inner side of the door frame, so that multi-directional fixation of the sealing rubber strip is realized, transverse displacement of the sealing rubber strip in the opening and closing process of the door body, sagging due to gravity or falling off due to vibration are effectively prevented, and firm installation of the sealing rubber strip is ensured. Meanwhile, the sealing rubber strip comprises a high-temperature-resistant silica gel layer, an expansion fireproof layer and a heat insulation buffer layer, so that the sealing rubber strip has the performance of high-temperature resistance, fireproofness and heat insulation buffering, and the heat insulation and fireproof effect of the fireproof door is improved.
[0013] 2. In the sealing installation structure, the positioning block is arranged on the side surface of the sealing rubber strip, the positioning block is in sliding connection with the positioning hole on the side surface of the door frame, and the positioning block is located at the upper and lower ends of the sealing rubber strip, so that accurate positioning of the sealing rubber strip during installation is realized. Meanwhile, the limiting block in the door frame is in sliding connection with the limiting hole on the positioning block of the sealing rubber strip, the limiting block slides on the sliding rod and is provided with tension by the tension spring, so that the limiting block is tightly clamped into the limiting hole, and the stability of the sealing rubber strip after installation is further improved, and deviation of the sealing rubber strip is prevented. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 A three-dimensional structure schematic view of a sealing installation structure in a steel heat insulation fireproof door is provided for the utility model;
[0015] Figure 2 A sealing rubber strip local structure schematic view of a sealing installation structure in a steel heat insulation fireproof door is provided for the utility model;
[0016] Figure 3 A door frame local structure schematic view of a sealing installation structure in a steel heat insulation fireproof door is provided for the utility model;
[0017] Figure 4 A sealing installation structure in a steel heat insulation fireproof door is provided for the utility model Figure 3 An enlarged view of A in the sealing installation structure in a steel heat insulation fireproof door is provided for the utility model;
[0018] Figure 5The utility model provides a kind of sealing rubber strip sectional view of sealing installation structure in steel heat insulation fire door.
[0019] Legend: 1, door frame; 2, fire door body; 3, fireproof glass; 4, pull rod; 5, sealing rubber strip; 501, high-temperature-resistant silica gel layer; 502, expansion fireproof layer; 503, heat insulation buffer layer; 6, transverse clamping block; 7, longitudinal clamping block; 8, oblique clamping block; 9, positioning block; 10, limiting hole; 11, movable slot; 12, transverse clamping slot; 13, longitudinal clamping slot; 14, oblique clamping slot; 15, positioning hole; 16, limiting block; 17, slide bar; 18, tension spring. DETAILED DESCRIPTION
[0020] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model will be further described below in combination with the drawings and examples. It should be noted that the examples and features in the examples of the present application can be combined with each other without conflict.
[0021] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model can also be implemented in other ways different from those described herein, therefore, the present utility model is not limited to the specific examples disclosed in the following specification.
[0022] Example 1: as Figures 1-4As shown, the utility model provides a technical scheme: a sealing installation structure in steel heat -proof fire door, including door frame 1, the surface hinge connection of door frame 1 has fire door body 2, the front of fire door body 2 is equipped with fireproof glass 3, the front of fire door body 2 is equipped with pull rod 4, the side of door frame 1 is equipped with sealing rubber strip 5, the side fixed mounting of sealing rubber strip 5 has horizontal clamping block 6, longitudinal clamping block 7 and oblique clamping block 8, the side fixed mounting of sealing rubber strip 5 has locating block 9, the surface of locating block 9 is equipped with limit hole 10, the side of sealing rubber strip 5 is equipped with movable slot 11, the inside of door frame 1 is equipped with horizontal clamping slot 12, longitudinal clamping slot 13 and oblique clamping slot 14, the side of door frame 1 is equipped with locating hole 15, the inside of door frame 1 is slidably connected with limiting block 16, the inside fixed mounting of door frame 1 has slide rod 17, the surface of slide rod 17 is equipped with tension spring 18, sealing rubber strip 5 includes high temperature resistant silica gel layer 501, expansion fireproof layer 502 and heat -insulating buffer layer 503, high temperature resistant silica gel layer 501 is located rubber strip outside, heat -insulating buffer layer 503 is located rubber strip inside, horizontal clamping block 6, longitudinal clamping block 7 and oblique clamping block 8 are connected with horizontal clamping slot 12, longitudinal clamping slot 13 and oblique clamping slot 14 respectively, locating block 9 and locating hole 15 are slidably connected, locating block 9 is located the upper and lower end of sealing rubber strip 5, limiting block 16 and limit hole 10 are slidably connected, limiting block 16 and slide rod 17 are slidably connected, the side fixed connection of one end of tension spring 18 and limiting block 16, the side fixed connection of the other end of tension spring 18 and door frame 1.
[0023] In the embodiment, by the horizontal clamping block 6, longitudinal clamping block 7 and oblique clamping block 8 of the side of sealing rubber strip 5 are connected with the horizontal clamping slot 12, longitudinal clamping slot 13 and oblique clamping slot 14 of the inside of door frame 1 respectively, the multidirectional fixation of sealing rubber strip 5 is realized, the transverse displacement of sealing rubber strip 5 in the process of door body opening and closing, the sagging due to gravity or the falling due to vibration are effectively prevented, the firm installation of sealing rubber strip 5 is ensured, simultaneously, sealing rubber strip 5 contains high temperature resistant silica gel layer 501, expansion fireproof layer 502 and heat -insulating buffer layer 503, sealing rubber strip 5 has the properties of high temperature resistance, fire prevention and heat -insulating buffering, the heat -insulating fireproof effect of fire door is improved, and the locating block 9 is arranged on the side of sealing rubber strip 5, the locating hole 15 of the side of door frame 1 is slidably connected with the locating block 9, and the locating block 9 is located on the upper and lower end of sealing rubber strip 5, so that the sealing rubber strip 5 can be accurately positioned during installation.
[0024] The working principle of the embodiment is as follows: when the sealing installation structure of the steel heat-insulating fireproof door is installed, first, the lateral clamping block 6, the longitudinal clamping block 7 and the oblique clamping block 8 on the side of the sealing rubber strip 5 are respectively aligned with the lateral clamping groove 12, the longitudinal clamping groove 13 and the oblique clamping groove 14 on the inner side of the door frame 1, and are sequentially embedded and clamped, so as to preliminarily fix the sealing rubber strip 5 from the horizontal, vertical and oblique directions; then, the positioning block 9 on the upper and lower ends of the side of the sealing rubber strip 5 is inserted into the positioning hole 15 on the side of the door frame 1, so as to complete the accurate positioning of the sealing rubber strip 5 on the door frame 1; then, the limiting block 16 is pulled to overcome the tension of the tension spring 18, so as to slide along the sliding rod 17, and the limiting block 16 is aligned with the limiting hole 10 on the positioning block 9 of the sealing rubber strip 5; the limiting block 16 is loosened, and under the action of the tension spring 18, the limiting block 16 is clamped into the limiting hole 10, so as to further firmly fix the sealing rubber strip 5 on the door frame 1; after the installation is completed, in daily use, the high-temperature-resistant silica gel layer 501 on the outer side of the sealing rubber strip 5 is tightly attached to the body 2 of the fireproof door due to good elasticity and flexibility, so as to prevent external air and dust from entering; when a fire occurs, the environment temperature rises, the expansion fireproof layer 502 in the sealing rubber strip 5 rapidly expands, fills the gap between the door body and the door frame 1, and forms a fireproof barrier; at the same time, the heat-insulating buffer layer 503 on the inner side buffers the deformation of the door body due to thermal expansion and cold contraction, and reduces heat transfer.
[0025] The above is only a preferred embodiment of the present application, and does not limit the present application in other forms. Any person skilled in the art can modify or change the above disclosed technical content to obtain equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the protection scope of the technical scheme of the present application.
Claims
1. A sealing mounting structure in a steel fire door, comprising a door frame (1), characterized in that: The surface of the door frame (1) is hingedly connected with a fireproof door body (2), the front surface of the fireproof door body (2) is provided with fireproof glass (3), the front surface of the fireproof door body (2) is provided with a pull rod (4), the side surface of the door frame (1) is provided with a sealing rubber strip (5), the side surface of the sealing rubber strip (5) is fixedly installed with a transverse clamping block (6), a longitudinal clamping block (7) and an inclined clamping block (8), the side surface of the sealing rubber strip (5) is fixedly installed with a positioning block (9), the surface of the positioning block (9) is provided with a limiting hole (10), the side surface of the sealing rubber strip (5) is provided with a movable groove (11), the inner side of the door frame (1) is provided with a transverse clamping groove (12), a longitudinal clamping groove (13) and an inclined clamping groove (14), the side surface of the door frame (1) is provided with a positioning hole (15), the inner side of the door frame (1) is slidably connected with a limiting block (16), the inner side of the door frame (1) is fixedly installed with a sliding rod (17), and the surface of the sliding rod (17) is sleeved with a tension spring (18).
2. The sealing mounting structure in a steel fire door according to claim 1, wherein: The sealing rubber strip (5) comprises a high-temperature-resistant silica gel layer (501), an expansion fireproof layer (502) and a heat-insulating buffer layer (503), the high-temperature-resistant silica gel layer (501) is located on the outer side of the rubber strip, and the heat-insulating buffer layer (503) is located on the inner side of the rubber strip.
3. The sealing mounting structure in a steel fire door according to claim 1, wherein: The transverse clamping block (6), the longitudinal clamping block (7) and the inclined clamping block (8) are respectively clamped and connected with the transverse clamping groove (12), the longitudinal clamping groove (13) and the inclined clamping groove (14).
4. The sealing mounting structure in a steel fire door according to claim 1, wherein: The positioning block (9) is slidably connected with the positioning hole (15), and the positioning block (9) is located at the upper and lower ends of the sealing rubber strip (5).
5. The sealing mounting structure in a steel fire door according to claim 1, wherein: The limiting block (16) is slidably connected with the limiting hole (10), and the limiting block (16) is slidably connected with the sliding rod (17).
6. The sealing mounting structure in a steel fire door according to claim 1, wherein: One end of the tension spring (18) is fixedly connected with the side surface of the limiting block (16), and the other end of the tension spring (18) is fixedly connected with the side surface of the door frame (1).