A stainless steel door with sound insulation and noise reduction
By combining a limiting mechanism with multiple layers of sound-absorbing materials, the problem of aging and inconvenient replacement of stainless steel door sound insulation materials is solved, enabling quick replacement and improved sound insulation and noise reduction effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JIAXING DINGHONG TECH CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-06-09
AI Technical Summary
The sound insulation material of existing stainless steel doors is prone to aging after long-term use, which affects the sound insulation and noise reduction effect. Moreover, replacing the sound insulation material requires disassembling the entire door, which is time-consuming.
A limiting mechanism was designed, including a connecting rod, a pull rod, a limiting plate, a trapezoidal block, and a spring. By pulling the connecting rod, the limiting plate is slid, simplifying the replacement process of sound insulation materials. At the same time, the combined structure of damping sound insulation felt, glass fiber cotton, and perforated sound-absorbing panels improves the sound insulation effect.
It enables quick replacement of sound insulation materials, reduces disassembly time, and significantly improves the sound insulation and noise reduction performance of stainless steel doors through multiple layers of sound-absorbing materials.
Smart Images

Figure CN224338870U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stainless steel door technology, and in particular to a sound-insulating and noise-reducing stainless steel door. Background Technology
[0002] Stainless steel doors are made primarily of stainless steel sheets through a shearing and pressing process. With their unique advantages, they are widely used in residential, commercial, and office settings. Stainless steel doors exude a unique metallic luster, are simple and elegant, and showcase a modern and stylish feel. They blend seamlessly with various architectural styles, enhancing the overall aesthetics. Stainless steel is sturdy and durable, able to withstand external impacts, possesses good pressure resistance, and is not easily deformed.
[0003] To improve sound insulation and noise reduction capabilities, stainless steel doors often have sound-insulating materials placed inside. Frequent opening and closing or vibration may accelerate the fatigue of these materials. At the same time, long-term use can easily lead to aging of the sound-insulating materials, affecting their sound insulation and noise reduction effects. Regular replacement of the internal sound-insulating materials is necessary. Currently, replacing the sound-insulating materials requires disassembling the entire stainless steel door, which is time-consuming and inconvenient. Therefore, a new type of stainless steel door with sound insulation and noise reduction is proposed. Utility Model Content
[0004] The purpose of this utility model is to solve the problem that existing stainless steel doors are prone to material aging after long-term use, which affects the sound insulation and noise reduction effect and requires regular replacement of the internal sound insulation material. Currently, replacing the sound insulation material requires disassembling the entire stainless steel door, which is time-consuming and inconvenient. Therefore, this utility model proposes a stainless steel door with sound insulation and noise reduction.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A soundproof and noise-reducing stainless steel door includes a door body, a sealing plate connected to one side of the door body, a rectangular opening on one side of the door body and the sealing plate, a receiving cavity inside the door body and the sealing plate, a damping sound insulation felt connected to the receiving cavity, a glass fiber cotton connected to the receiving cavity, a perforated sound-absorbing plate connected to the receiving cavity, and a limit mechanism provided on the door body.
[0007] The limiting mechanism includes a connecting rod, a pull rod, a limiting plate, a trapezoidal block, and a spring. One end of the connecting rod is fixedly connected to the pull rod, one end of the pull rod is fixedly connected to the limiting plate, one side of the limiting plate is fixedly connected to the trapezoidal block, and one side of the limiting plate is fixedly connected to the spring.
[0008] A connecting block is connected inside the rectangular opening, and a limiting groove is formed on one side of the connecting block. The trapezoidal block is located inside the limiting groove.
[0009] Preferably, a rectangular cavity is provided on one side of the rectangular opening, one end of the spring is fixedly connected to the rectangular cavity, a circular hole is provided in the door body, and the connecting rod is slidably connected to the circular hole.
[0010] Preferably, a rectangular strip is fixedly connected to the top and bottom of the door body. The rectangular strip has a sliding groove, and a sealing strip is slidably connected in the sliding groove. A baffle is connected to one end of the rectangular strip, and a fixing hole is provided at one end of the baffle and the rectangular strip.
[0011] Preferably, a first threaded hole is provided on one side of the door body, and a second threaded hole is provided on the sealing plate. The first threaded hole and the second threaded hole correspond to each other, and a fixing bolt is internally threaded into the first threaded hole and the second threaded hole.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. When using this equipment, the connecting rod can be pulled by the limit mechanism. The connecting rod drives the limit plate to slide in the rectangular cavity. The spring contracts, and the limit plate drives the trapezoidal block away from the limit groove until the trapezoidal block is retracted into the rectangular cavity. Then the connecting block can be removed to replace the sound insulation material. It is not necessary to disassemble the entire stainless steel door. The time required is short and it is more convenient.
[0014] 2. When in use, this equipment can greatly improve the sound insulation and noise reduction effect of stainless steel doors through the combined action of the damping sound insulation felt, perforated sound absorption plate and perforated sound absorption plate in the cavity. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a soundproof and noise-reducing stainless steel door proposed in this utility model.
[0016] Figure 2 This is a cross-sectional three-dimensional structural diagram of a sound-insulating and noise-reducing stainless steel door proposed in this utility model.
[0017] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure at point A in the middle;
[0018] Figure 4 This is a three-dimensional structural diagram of the second threaded hole of a stainless steel door for sound insulation and noise reduction proposed in this utility model.
[0019] Figure 5 This is a three-dimensional structural diagram of the sealing plate of a stainless steel door for sound insulation and noise reduction proposed in this utility model;
[0020] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure at point B.
[0021] In the diagram: 1. Door body; 2. Sealing plate; 3. Damping sound insulation felt; 4. Fiberglass wool; 5. Perforated sound-absorbing panel; 6. Connecting rod; 7. Pull rod; 8. Limiting plate; 9. Trapezoidal block; 10. Spring; 11. Rectangular cavity; 12. Connecting block; 13. Limiting groove; 14. Rectangular strip; 15. Sealing strip; 16. Baffle; 17. Second threaded hole; 18. Fixing bolt. Detailed Implementation
[0022] 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.
[0023] Reference Figures 1-6 A soundproof and noise-reducing stainless steel door includes a door body 1, a sealing plate 2 connected to one side of the door body 1, a rectangular opening on one side of the door body 1 and the sealing plate 2, an accommodating cavity inside the door body 1 and the sealing plate 2, a damping sound insulation felt 3 connected to the accommodating cavity, a glass fiber cotton 4 connected to the accommodating cavity, a perforated sound-absorbing plate 5 connected to the accommodating cavity, and a limit mechanism provided on the door body 1.
[0024] Among them, the two sides of the perforated sound-absorbing panel 5 are attached to two pieces of glass fiber cotton 4, and one side of each piece of glass fiber cotton 4 is attached to the damping sound insulation felt 3. Under the combined effect, the sound insulation and noise reduction effect of the stainless steel door is greatly improved.
[0025] The damping sound insulation felt 3 is composed of modified asphalt mixed with high molecular polymers such as SBS and APP, and is attached with aluminum foil or non-woven fabric. Through the high internal resistance characteristics of the material, the mechanical vibration energy is converted into heat energy and dissipated, reducing structural resonance.
[0026] Fiberglass wool 4 converts sound energy into heat energy through friction and resonance, and its absorption rate for mid-to-high frequency noise (500-4000Hz) can reach 80%-95%.
[0027] Perforated sound-absorbing panel 5 is a functional board material that achieves noise reduction through a combination of perforated structure and sound-absorbing materials. It is made of composite materials, including gypsum, fiberglass, wood-plastic composite board, etc., and has fireproof, moisture-proof and sound-absorbing properties.
[0028] Furthermore, the limiting mechanism includes a connecting rod 6, a pull rod 7, a limiting plate 8, a trapezoidal block 9, and a spring 10. One end of the connecting rod 6 is fixedly connected to the pull rod 7, one end of the pull rod 7 is fixedly connected to the limiting plate 8, one side of the limiting plate 8 is fixedly connected to the trapezoidal block 9, and one side of the limiting plate 8 is fixedly connected to the spring 10.
[0029] A rectangular cavity 11 is provided on one side of the rectangular opening, and one end of the spring 10 is fixedly connected to the rectangular cavity 11. A circular hole is provided on the door body 1, and the connecting rod 6 is slidably connected to the circular hole.
[0030] A connecting block 12 is connected inside the rectangular opening. A limiting groove 13 is opened on one side of the connecting block 12, and the trapezoidal block 9 is located inside the limiting groove 13.
[0031] In this process, the connecting block 12 is inserted into the rectangular opening, and the connecting block 12 contacts the inclined side of the trapezoidal block 9. The connecting block 12 is pressed further, and the connecting block 12 slides along the inclined side of the trapezoidal block 9. The spring 10 contracts, and the trapezoidal block 9 is retracted into the rectangular cavity 11 until the connecting block 12 is completely inserted into the rectangular opening. Under the elastic action of the spring 10, the trapezoidal block 9 is stuck into the limiting groove 13, which limits the connection block 12.
[0032] The four sides of the connecting block 12 are in contact with the rectangular opening, ensuring that the receiving cavity can be sealed when the connecting block 12 is inside the rectangular opening.
[0033] Furthermore, rectangular strips 14 are fixedly connected to the top and bottom of the door body 1. The rectangular strips 14 have sliding grooves, and sealing strips 15 are slidably connected in the sliding grooves. A baffle 16 is connected to one end of the rectangular strips 14, and a fixing hole is provided at one end of the baffle 16 and the rectangular strips 14.
[0034] The sealing strip 15 seals the connection between the door body 1 and the door frame, further blocking noise. The baffle 16 blocks the sealing strip 15 in the sliding groove. When the sealing strip 15 needs to be replaced, the baffle 16 is removed, the sealing strip 15 is replaced, and then it is fixed with bolts through the fixing holes.
[0035] Furthermore, a first threaded hole is provided on one side of the door body 1, and a second threaded hole 17 is provided on the sealing plate 2. The first threaded hole and the second threaded hole 17 correspond to each other, and a fixing bolt 18 is internally threaded to the first threaded hole and the second threaded hole 17.
[0036] The door body 1 and the sealing plate 2 are conveniently assembled by using fixing bolts 18 through the first threaded hole and the second threaded hole 17.
[0037] The working principle of this utility model:
[0038] When it is necessary to replace the sound insulation material, pull the connecting rod 6 by pulling the lever 7. The connecting rod 6 drives the limiting plate 8 to slide in the rectangular cavity 11. The spring 10 retracts, and the limiting plate 8 drives the trapezoidal block 9 to leave the limiting groove 13 until the trapezoidal block 9 is retracted into the rectangular cavity 11. Then the connecting block 12 can be removed, and the damping sound insulation felt 3, glass fiber cotton 4, and perforated sound absorbing board 5 in the cavity can be taken out and replaced.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A soundproof and noise-reducing stainless steel door, comprising a door body (1), characterized in that, A sealing plate (2) is connected to one side of the door body (1). A rectangular opening is provided on one side of the door body (1) and the sealing plate (2). A receiving cavity is provided inside the door body (1) and the sealing plate (2). A damping sound insulation felt (3) is connected inside the receiving cavity. A glass fiber cotton (4) is connected inside the receiving cavity. A perforated sound-absorbing plate (5) is connected inside the receiving cavity. A limit mechanism is provided on the door body (1). The limiting mechanism includes a connecting rod (6), a pull rod (7), a limiting plate (8), a trapezoidal block (9), and a spring (10). One end of the connecting rod (6) is fixedly connected to the pull rod (7), one end of the pull rod (7) is fixedly connected to the limiting plate (8), one side of the limiting plate (8) is fixedly connected to the trapezoidal block (9), and one side of the limiting plate (8) is fixedly connected to the spring (10). A connecting block (12) is connected inside the rectangular opening. A limiting groove (13) is opened on one side of the connecting block (12), and the trapezoidal block (9) is located inside the limiting groove (13).
2. The stainless steel door for sound insulation and noise reduction according to claim 1, characterized in that, A rectangular cavity (11) is provided on one side of the rectangular opening. One end of the spring (10) is fixedly connected to the rectangular cavity (11). A circular hole is provided on the door body (1). The connecting rod (6) is slidably connected to the circular hole.
3. The stainless steel door for sound insulation and noise reduction according to claim 1, characterized in that, The top and bottom of the door body (1) are fixedly connected with rectangular strips (14). The rectangular strips (14) have sliding grooves, and sealing strips (15) are slidably connected in the sliding grooves. One end of the rectangular strips (14) is connected to a baffle (16), and one end of the baffle (16) and the rectangular strips (14) has a fixing hole.
4. A soundproof and noise-reducing stainless steel door according to claim 1, characterized in that, The door body (1) has a first threaded hole on one side, and the sealing plate (2) has a second threaded hole (17). The first threaded hole and the second threaded hole (17) correspond to each other, and the first threaded hole and the second threaded hole (17) are internally threaded with fixing bolts (18).