High-sealing soundproofing and noise reduction metal door
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JIAXING DINGHONG TECH CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-26
AI Technical Summary
There is a gap between the outer wall and the door frame of the existing metal door, which causes sound leakage and poor sound insulation.
First and second sealing and sound insulation components are installed in the first and second sealing grooves on the outer wall of the metal door. The components consist of sound-absorbing cotton and magnetic plates. Through the cooperation of magnetism and springs, the gaps are sealed and sound is absorbed.
It effectively reduces sound leakage between the metal door and the door frame, thus improving the sound insulation effect.
Smart Images

Figure CN224282435U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal door technology, and in particular to a high-sealing, sound-insulating, and noise-reducing metal door. Background Technology
[0002] Metal doors are commonly used for entrance doors, kitchen doors, and bathroom doors in residences. They offer high security and durability, making them especially suitable for situations requiring fire resistance and burglar protection. Made of high-strength metal, metal doors effectively resist external damage. They are also corrosion-resistant and not easily deformed. Materials such as aluminum alloy or stainless steel combine aesthetics and practicality, adapting to various home décor styles.
[0003] In existing technology, the entrance door of a residence is usually installed on one side of the door frame with multiple hinges. The installed metal door can play a role in anti-theft and initial sound insulation. However, there is a gap between the outer wall of the metal door and the door frame, which will cause sound leakage, resulting in poor sound insulation effect of the metal door. Therefore, a high-sealing sound insulation and noise reduction metal door is proposed. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies where gaps exist between the outer wall and the frame of metal doors, leading to sound leakage and poor sound insulation. This invention proposes a highly airtight, sound-insulating, and noise-reducing metal door.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A high-sealing, sound-insulating, and noise-reducing metal door includes a metal door body movably installed inside the door frame. The outer wall of the metal door body is provided with a first sealing groove and a second sealing groove. A first sealing and sound-insulating component is provided inside the first sealing groove, and a second sealing and sound-insulating component is provided inside the second sealing groove.
[0007] Preferably, the first sealing and sound insulation component includes a first main sound-absorbing cotton and a first secondary sound-absorbing cotton arranged symmetrically. A first main magnetic plate is fixedly connected to one side of the first main sound-absorbing cotton, and a first main spring is fixedly connected to one side of the first main magnetic plate. The bottom of the first main spring is fixedly connected to the inner wall of the first sealing groove, and the first main magnetic plate is slidably connected to the first sealing groove.
[0008] Preferably, a first magnetic plate is fixedly connected to one side of the first sound-absorbing cotton, a first spring is fixedly connected to one side of the first magnetic plate, the bottom of the first spring is fixedly connected to the inner wall of the first sealing groove, and the first magnetic plate is slidably connected to the first sealing groove.
[0009] Preferably, the second sealing and sound insulation component includes a second main sound-absorbing cotton and a second auxiliary sound-absorbing cotton arranged symmetrically. A second main magnetic plate is fixedly connected to one side of the second main sound-absorbing cotton, and a second main spring is fixedly connected to one side of the second main magnetic plate. The bottom of the second main spring is fixedly connected to the inner wall of the second sealing groove, and the second main magnetic plate is slidably connected to the second sealing groove.
[0010] Preferably, a second magnetic plate is fixedly connected to one side of the second sound-absorbing cotton, a second spring is fixedly connected to one side of the second magnetic plate, the bottom of the second spring is fixedly connected to the inner wall of the second sealing groove, and the second magnetic plate is slidably connected to the second sealing groove.
[0011] Preferably, the first sealing groove and the second sealing groove are arranged in a "U" shape, and an iron sheet arranged in a "U" shape is fixedly connected to the inner wall of the door frame.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] When in use, this device utilizes the first and second sealing and sound insulation components. Through the cooperation of the first main sound-absorbing cotton, the first secondary sound-absorbing cotton, the second main sound-absorbing cotton, and the second secondary sound-absorbing cotton, it can double seal the gap between the metal door body and the door frame, and play a role in sound insulation and noise reduction. This can prevent sound leakage and ensure the sound insulation effect of the metal door body. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the external three-dimensional structure of a high-sealing, sound-insulating, and noise-reducing metal door proposed in this utility model;
[0015] Figure 2 This is a three-dimensional structural diagram of the first and second sealing grooves in a high-sealing, sound-insulating, and noise-reducing metal door proposed in this utility model.
[0016] Figure 3 A schematic diagram of the three-dimensional structure connecting the first main sound-absorbing cotton, the first secondary sound-absorbing cotton, the second main sound-absorbing cotton, and the second secondary sound-absorbing cotton;
[0017] Figure 4 This is a three-dimensional structural diagram showing the connection between the first main spring, the first secondary spring, the second main spring, and the second secondary spring.
[0018] In the diagram: 1. Metal door body; 2. First sealing groove; 3. Second sealing groove; 4. First main sound-absorbing cotton; 5. First secondary sound-absorbing cotton; 6. First main magnetic plate; 7. First main spring; 8. First secondary magnetic plate; 9. First secondary spring; 10. Second main sound-absorbing cotton; 11. Second secondary sound-absorbing cotton; 12. Second main magnetic plate; 13. Second main spring; 14. Second secondary magnetic plate; 15. Second secondary spring. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0020] Reference Figures 1-4 A high-sealing, sound-insulating, and noise-reducing metal door includes a metal door body 1 movably installed inside the door frame. The outer wall of the metal door body 1 is provided with a first sealing groove 2 and a second sealing groove 3. A first sealing and sound-insulating component is provided inside the first sealing groove 2, and a second sealing and sound-insulating component is provided inside the second sealing groove 3. It should be noted that the metal door body 1 is made of aluminum alloy or stainless steel, which will not affect the first main magnetic plate 6, the first secondary magnetic plate 8, the second main magnetic plate 12, and the second secondary magnetic plate 14.
[0021] Furthermore, the first sealing and sound insulation component includes a first main sound-absorbing cotton 4 and a first secondary sound-absorbing cotton 5 symmetrically arranged. A first main magnetic plate 6 is fixedly connected to one side of the first main sound-absorbing cotton 4, and a first main spring 7 is fixedly connected to one side of the first main magnetic plate 6. The bottom of the first main spring 7 is fixedly connected to the inner wall of the first sealing groove 2. The first main magnetic plate 6 is slidably connected to the first sealing groove 2. It should be noted that the elastic force of the first main spring 7 is less than the magnetic force of the first main magnetic plate 6. The magnetic force of the first main magnetic plate 6 can push the first main sound-absorbing cotton 4 to move up and down and to stick to the iron sheet on the inner wall of the door frame. The first main magnetic plate 6 does not move out of the interior of the first sealing groove 2. At the same time, when the metal door body 1 is opened, the multiple first main springs 7 pull the first main magnetic plate 6, which can reset the first main sound-absorbing cotton 4.
[0022] Furthermore, a first magnetic plate 8 is fixedly connected to one side of the first sound-absorbing cotton 5, and a first spring 9 is fixedly connected to one side of the first magnetic plate 8. The bottom of the first spring 9 is fixedly connected to the inner wall of the first sealing groove 2, and the first magnetic plate 8 is slidably connected to the first sealing groove 2. It should be noted that the elastic force of the first spring 9 is less than the magnetic force of the first magnetic plate 8. The magnetic force of the first magnetic plate 8 can push the first sound-absorbing cotton 5 to move to the left and right and to stick to the iron sheet on the inner wall of the door frame. The first magnetic plate 8 does not move out of the interior of the first sealing groove 2. At the same time, when the metal door body 1 is opened, the multiple first springs 9 pull the first magnetic plate 8, which can reset the first sound-absorbing cotton 5.
[0023] Furthermore, the second sealing and sound insulation component includes symmetrically arranged second main sound-absorbing cotton 10 and second auxiliary sound-absorbing cotton 11. On one side of the second main sound-absorbing cotton 10, a second main magnetic plate 12 is fixedly connected. On one side of the second main magnetic plate 12, a second main spring 13 is fixedly connected. The bottom of the second main spring 13 is fixedly connected to the inner wall of the second sealing groove 3. The second main magnetic plate 12 is slidably connected to the second sealing groove 3. It should be noted that the elastic force of the second main spring 13 is less than the magnetic force of the second main magnetic plate 12. The magnetic force of the second main magnetic plate 12 can push the second main sound-absorbing cotton 10 to move up and down and stick to the iron sheet on the inner wall of the door frame. And the second main magnetic plate 12 does not move out of the interior of the second sealing groove 3. At the same time, when the metal door body 1 is opened, multiple second main springs 13 play a pulling role on the second main magnetic plate 12, which can reset the second main sound-absorbing cotton 10.
[0024] Furthermore, on one side of the second auxiliary sound-absorbing cotton 11, a second auxiliary magnetic plate 14 is fixedly connected. On one side of the second auxiliary magnetic plate 14, a second auxiliary spring 15 is fixedly connected. The bottom of the second auxiliary spring 15 is fixedly connected to the inner wall of the second sealing groove 3. The second auxiliary magnetic plate 14 is slidably connected to the second sealing groove 3. It should be noted that the elastic force of the second auxiliary spring 15 is less than the magnetic force of the second auxiliary magnetic plate 14. The magnetic force of the second auxiliary magnetic plate 14 can push the second auxiliary sound-absorbing cotton 11 to move left and right and stick to the iron sheet on the inner wall of the door frame. And the second auxiliary magnetic plate 14 does not move out of the interior of the second sealing groove 3. At the same time, when the metal door body 1 is opened, multiple second auxiliary springs 15 play a pulling role on the second auxiliary magnetic plate 14, which can reset the second auxiliary sound-absorbing cotton 11.
[0025] Furthermore, the first sealing groove 2 and the second sealing groove 3 are arranged in a "return" shape. The inner wall of the door frame is fixedly connected with an iron sheet arranged in a "return" shape. It should be noted that the iron sheet can be adsorbed and moved by the first main magnetic plate 6, the first auxiliary magnetic plate 8, the second main magnetic plate 12 and the second auxiliary magnetic plate 14, and the door frame and the iron sheet are not drawn.
[0026] The working principle of the present utility model:
[0027] First, close the metal door body 1. When the metal door is closed, due to the magnetic forces of the first main magnetic plate 6 and the second main magnetic plate 12, the first main magnetic plate 6 and the second main magnetic plate 12 at the top will drive the first main sound-absorbing cotton 4 and the second main sound-absorbing cotton 10 to move up and stick to the iron sheet on the inner top of the door frame. The first main magnetic plate 6 and the second main magnetic plate 12 at the bottom will drive the first main sound-absorbing cotton 4 and the second main sound-absorbing cotton 10 to move down and stick to the iron sheet on the inner bottom of the door frame.
[0028] Then, the first magnetic plate 8 and the second magnetic plate 14 on the left will cause the first sound-absorbing cotton 5 and the second sound-absorbing cotton 11 to move to the left and stick to the iron plate on the left side of the door frame. The first magnetic plate 8 and the second magnetic plate 14 on the right will cause the first sound-absorbing cotton 5 and the second sound-absorbing cotton 11 to move to the right and stick to the iron plate on the right side of the door frame.
[0029] Finally, the gaps between the top, bottom, left and right sides of the metal door body 1 and the door frame are blocked and sealed, thereby preventing sound leakage and ensuring the sound insulation effect of the metal door body 1.
[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A high-sealing, sound-insulating, and noise-reducing metal door, comprising a metal door body (1) movably installed inside the door frame, characterized in that, The outer wall of the metal door body (1) is provided with a first sealing groove (2) and a second sealing groove (3). A first sealing and sound insulation component is arranged inside the first sealing groove (2), and a second sealing and sound insulation component is arranged inside the second sealing groove (3).
2. The high-sealing, sound-insulating, and noise-reducing metal door according to claim 1, characterized in that, The first sealing and sound insulation component includes symmetrically arranged first main sound-absorbing cotton (4) and first auxiliary sound-absorbing cotton (5). One side of the first main sound-absorbing cotton (4) is fixedly connected to a first main magnetic plate (6). One side of the first main magnetic plate (6) is fixedly connected to a first main spring (7). The bottom of the first main spring (7) is fixedly connected to the inner wall of the first sealing groove (2), and the first main magnetic plate (6) is slidably connected to the first sealing groove (2).
3. A high-sealing, sound-insulating, and noise-reducing metal door according to claim 2, characterized in that, One side of the first auxiliary sound-absorbing cotton (5) is fixedly connected to a first auxiliary magnetic plate (8). One side of the first auxiliary magnetic plate (8) is fixedly connected to a first auxiliary spring (9). The bottom of the first auxiliary spring (9) is fixedly connected to the inner wall of the first sealing groove (2), and the first auxiliary magnetic plate (8) is slidably connected to the first sealing groove (2).
4. A high-sealing, sound-insulating, and noise-reducing metal door according to claim 1, characterized in that, The second sealing and sound insulation component includes symmetrically arranged second main sound-absorbing cotton (10) and second auxiliary sound-absorbing cotton (11). One side of the second main sound-absorbing cotton (10) is fixedly connected to a second main magnetic plate (12). One side of the second main magnetic plate (12) is fixedly connected to a second main spring (13). The bottom of the second main spring (13) is fixedly connected to the inner wall of the second sealing groove (3), and the second main magnetic plate (12) is slidably connected to the second sealing groove (3).
5. A high-sealing, sound-insulating, and noise-reducing metal door according to claim 4, characterized in that, One side of the second auxiliary sound-absorbing cotton (11) is fixedly connected to a second auxiliary magnetic plate (14). One side of the second auxiliary magnetic plate (14) is fixedly connected to a second auxiliary spring (15). The bottom of the second auxiliary spring (15) is fixedly connected to the inner wall of the second sealing groove (3), and the second auxiliary magnetic plate (14) is slidably connected to the second sealing groove (3).
6. A high-sealing, sound-insulating, and noise-reducing metal door according to claim 1, characterized in that, The first sealing groove (2) and the second sealing groove (3) are arranged in a "return" shape, and an iron sheet arranged in a "return" shape is fixedly connected to the inner wall of the door frame.