A multi-layer composite structure soundproof door with high sound insulation

Abstract

The utility model relates to door and window technical field discloses a multilayer composite structure mute door of high sound insulation, including door frame and door body, the door body is with door frame through multiple combined leaves swing joint, the door body adopts multilayer composite structure, from outside to inside includes outer decorative board, first sound insulation board, aluminium alloy frame board, second sound insulation board and inner decorative board in proper order, the side of door body is fixed with elastic arc convex sealing strip, first sound insulation board is high density sound insulation sponge board, can high -efficiently absorb medium -high frequency sound wave, second sound insulation board is the damping sound insulation board of high molecule damping material and base material compound, reduces low frequency noise transmission, aluminium alloy frame board inside is equipped with the reinforcing rib of horizontal and longitudinal cross distribution, the cavity formed by reinforcing rib fills glass fiber cotton and can further block the propagation of sound wave in the door body, the above -mentioned multilayer structure synergy effect realizes the all -round block of medium -high frequency, low frequency and so on multiband noise, avoids the outside noise and transmits into the room through the door board.

Description

Technical Field

[0001] This utility model relates to the field of door and window technology, and in particular to a multi-layer composite structure silent door with high sound insulation. Background Technology

[0002] In modern architectural spaces, doors, as core components connecting and dividing different areas, are becoming key elements in enhancing indoor comfort through material innovation and structural upgrades. Facing people's increasing pursuit of tranquility in their living and working environments, the sound insulation performance of doors continues to break through traditional limitations. By combining composite materials to form efficient sound barriers, sound wave transmission is effectively reduced. At the same time, precise sealing designs further block sound leakage through gaps. Combined with silent hinges, soft-close locks, and other accessories, dual sound insulation effects are achieved during opening and closing, as well as in static states. These technological upgrades transform doors from mere basic entry and exit passages into crucial supports for creating a quiet and comfortable indoor environment, fully meeting the demands of modern life for spatial quality.

[0003] Traditional soundproof doors mostly achieve sound insulation by increasing the thickness of the door panel or filling the inside of the door panel with a single sound-insulating material. However, this structure has obvious defects. On the one hand, the ability of a single sound-insulating material to block sound waves of different frequencies is limited, especially the blocking effect on mid-to-high frequency sound waves, which means that external noise can still enter the room through the door panel. On the other hand, the door gap sealing structure of traditional soundproof doors is not designed properly, and gaps are easily formed between the door and the door frame, and between the door and the ground. Noise can penetrate through these gaps, further reducing the overall sound insulation performance. To address this, we propose a multi-layer composite structure soundproof door with high sound insulation. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer composite structure silent door with high sound insulation to solve the problems of poor sound insulation performance and poor sealing effect of traditional silent doors.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer composite silent door with high sound insulation, comprising a door frame and a door body, wherein the door body and the door frame are movably connected by multiple hinges, the door body adopts a multi-layer composite structure, comprising, from the outside to the inside, an outer decorative panel, a first sound insulation panel, an aluminum alloy frame panel, a second sound insulation panel, and an inner decorative panel, wherein an elastic arc-shaped raised sealing strip is fixedly provided on the side of the door body, a sealing groove adapted to the elastic arc-shaped raised sealing strip is provided on the inner wall of the door frame, a receiving groove is provided at the bottom of the door body, a sealing strip is provided in the receiving groove, and two sets of symmetrically arranged top rods are fixedly installed on the top inner wall of the receiving groove, each set of top rods is fitted with a spring, and the output shaft of the top rod is fixedly connected to the top of the sealing strip.

[0006] As a preferred embodiment, the aluminum alloy frame plate is fixedly provided with a number of horizontally and vertically intersecting reinforcing ribs, and the cavity formed between the reinforcing ribs is filled with glass fiber cotton in each cavity.

[0007] As a preferred embodiment, both the outer and inner decorative panels are environmentally friendly solid wood veneer panels with wear-resistant and waterproof treatment on the surface. The first sound insulation panel is a high-density sound insulation sponge panel, and the second sound insulation panel is a damping sound insulation panel composed of a polymer damping material and a substrate.

[0008] As a preferred embodiment, a protruding plate is fixedly provided on the top of the door frame, a trigger block is fixedly provided on the protruding plate, an inductive contact adapted to the trigger block is provided on the door body, and the top rod is electrically connected to the trigger block.

[0009] As a preferred embodiment, one end of the spring is fixedly connected to the top of the sealing strip, and the other end is fixedly connected to the top of the top rod, with the spring movably connected to the circumferential surface of the top rod.

[0010] As a preferred embodiment, the door body is provided with a handle, and the joint between the elastic arc-shaped raised sealing strip and the sealing groove is a sealed connection.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. The door adopts a multi-layer composite structure with an outer decorative panel, a first sound insulation panel, an aluminum alloy frame panel, a second sound insulation panel, and an inner decorative panel arranged sequentially from the outside to the inside. The first sound insulation panel is a high-density sound insulation sponge board, which can efficiently absorb mid-to-high frequency sound waves. The second sound insulation panel is a damping sound insulation board composed of polymer damping material and substrate, which can suppress vibration and reduce the transmission of low-frequency noise through damping. The aluminum alloy frame panel is equipped with horizontal and vertical reinforcing ribs, and the cavities formed by the reinforcing ribs are filled with glass fiber cotton, which can further block the propagation of sound waves inside the door. The above multi-layer structure works together to achieve all-round isolation of mid-to-high frequency, low-frequency and other multi-frequency noise, and prevent external noise from entering the room through the door panel.

[0013] 2. An elastic arc-shaped raised sealing strip is fixedly installed on the side of the door. A sealing groove adapted to the elastic arc-shaped raised sealing strip is opened on the inner wall of the door frame. When the door is closed, the elastic arc-shaped raised sealing strip is embedded in the sealing groove to form a tight seal to block the gap between the door and the door frame. A receiving groove is opened at the bottom of the door, and a sealing strip is installed in the receiving groove. Two sets of top rods are fixedly installed on the inner wall of the top of the receiving groove. Springs are sleeved on the top rods, and their output shafts are connected to the sealing strips. A trigger block is installed on the protruding plate fixed at the top of the door frame. A sensor contact that cooperates with the trigger block is installed on the door. When the door is closed, the sensor contact and the trigger block are linked, causing the top rod to drive the sealing strip to descend and fit against the ground, sealing the gap between the door and the ground. The above double sealing structure can prevent noise from penetrating through the door gap and significantly improve the overall sound insulation performance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a front cross-sectional view of the present invention.

[0016] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the door frame and door body structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the door frame structure of this utility model.

[0019] In the diagram: 1. Door frame; 2. Door body; 3. Handle; 4. Receiving groove; 101. Sealing groove; 102. Protruding plate; 103. Trigger block; 104. Sensor contact; 105. Elastic arc-shaped protruding sealing strip; 106. Sealing strip; 107. Top rod; 108. Spring; 201. Outer decorative panel; 202. First sound insulation panel; 203. Aluminum alloy frame panel; 204. Second sound insulation panel; 205. Inner decorative panel; 206. Reinforcing rib; 207. Fiberglass wool. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see the appendix Figure 1 - Appendix Figure 3A high-sound-insulating, multi-layered composite silent door includes a door frame 1 and a door body 2. The door body 2 is movably connected to the door frame 1 via multiple hinges. The door body 2 adopts a multi-layered composite structure, comprising, from the outside to the inside, an outer decorative panel 201, a first sound insulation panel 202, an aluminum alloy frame panel 203, a second sound insulation panel 204, and an inner decorative panel 205. The aluminum alloy frame panel 203 has several horizontally and vertically intersecting reinforcing ribs 206 fixedly installed inside. The cavities formed between the reinforcing ribs 206 are filled with fiberglass wool 207. The multiple hinges can distribute the pressure of the door body 2's own weight on the connection parts. This ensures the long-term stability of the connection between the door body 2 and the door frame 1, preventing loosening of single-joint hinges due to concentrated stress. Simultaneously, the synchronous rotation of multiple hinges allows for smooth and flexible rotation of the door body 2 without any jamming. Furthermore, the multi-layered composite structure of the door body 2, arranged sequentially from the outside to the inside, combined with the horizontally and vertically intersecting reinforcing ribs 206 inside the aluminum alloy frame plate 203, significantly enhances the overall structural strength of the door body 2, preventing deformation after long-term use. The glass fiber cotton 207 filling the cavities between the reinforcing ribs 206 can initially block sound wave propagation, laying a solid foundation for further improving the overall sound insulation performance through different sound insulation panels.

[0022] Both the outer decorative panel 201 and the inner decorative panel 205 are environmentally friendly solid wood veneer boards with wear-resistant and waterproof treatment on the surface. The first sound insulation board 202 is a high-density sound insulation sponge board, and the second sound insulation board 204 is a damping sound insulation board made of polymer damping material and substrate. The environmentally friendly solid wood veneer boards used in the outer decorative panel 201 and the inner decorative panel 205 can present a natural and beautiful appearance, which meets the needs of different decoration styles. The wear-resistant and waterproof treatment on their surfaces can effectively resist scratches caused by daily friction, and at the same time prevent mold and bulging in humid environments. While ensuring the aesthetics of the door 2, it significantly improves durability. The high-density sound insulation sponge board used in the first sound insulation board 202 has a dense pore structure that can efficiently absorb mid-to-high frequency sound waves and reduce the penetration of mid-to-high frequency noise. The damping sound insulation board 204, made of polymer damping material and substrate, can consume vibration energy through damping and suppress the transmission of low-frequency noise.

[0023] Specifically, to effectively solve the problem of limited sound insulation capabilities of traditional silent doors using a single sound insulation material for blocking sound waves of different frequencies, the door body 2 adopts a multi-layer composite structure consisting of an outer decorative panel 201, a first sound insulation panel 202, an aluminum alloy frame panel 203, a second sound insulation panel 204, and an inner decorative panel 205, arranged sequentially from the outside to the inside. The first sound insulation panel 202 is a high-density sound-absorbing sponge board, capable of efficiently absorbing mid-to-high frequency sound waves. The second sound insulation panel 204 is a damping sound insulation panel composed of a polymer damping material and a substrate, allowing sound insulation to pass through... The damping effect suppresses vibration and reduces the transmission of low-frequency noise. At the same time, the aluminum alloy frame plate 203 has horizontally and vertically distributed reinforcing ribs 206 inside. The cavity formed between the reinforcing ribs 206 is filled with glass fiber cotton 207. The glass fiber cotton 207 can further block the propagation of sound waves inside the door 2. The multi-layer structure works together to achieve all-round isolation of noise of different frequencies such as mid-high frequency and low frequency, and prevent external noise from entering the room through the door panel. Compared with traditional silent doors that rely on only a single sound insulation material, the sound insulation effect is greatly improved.

[0024] Please see the appendix Figure 1 - Appendix Figure 5 The door body 2 has a fixed elastic arc-shaped raised sealing strip 105 on its side. A sealing groove 101, matching the elastic arc-shaped raised sealing strip 105, is opened on the inner wall of the door frame 1. A receiving groove 4 is opened at the bottom of the door body 2, and a sealing strip 106 is installed inside the receiving groove 4. Two sets of symmetrically arranged top rods 107 are fixedly installed on the top inner wall of the receiving groove 4. Each set of top rods 107 is fitted with a spring 108, and the output shaft of the top rod 107 is fixedly connected to the top of the sealing strip 106. The elastic arc-shaped raised sealing strip 105 has good elastic deformation capability, and it is compatible with the sealing groove 101 on the inner wall of the door frame 1. The design of the sealing groove 101 allows the elastic arc-shaped raised sealing strip 105 to be tightly embedded in the sealing groove 101 when the door 2 is closed, effectively sealing the side gap between the door 2 and the door frame 1 and preventing noise from entering through the side gap. In the connection and cooperation between the top rod 107, spring 108 and sealing strip 106 in the bottom receiving groove 4 of the door 2, the spring 108 can elastically extend and retract according to the difference in ground height, driving the sealing strip 106 to make slight up and down adjustments, providing adjustable structural support for the bottom sealing of the door 2, ensuring that the sealing strip 106 is tightly attached to the ground and sealing the bottom gap.

[0025] A protruding plate 102 is fixedly installed on the top of the door frame 1, and a trigger block 103 is fixedly installed on the protruding plate 102. A sensing contact 104 adapted to the trigger block 103 is installed on the door body 2. A top rod 107 is electrically connected to the trigger block 103. One end of a spring 108 is fixedly connected to the top of a sealing strip 106, and the other end is fixedly connected to the top of the top rod 107. The spring 108 is movably connected to the circumferential surface of the top rod 107. A handle 3 is installed on the door body 2. The elastic arc-shaped protruding sealing strip 105 and the sealing groove 101 are sealed together. The protruding plate 102 fixedly installed on the top of the door frame 1 corresponds to the sensing contact 104 on the door body 2, providing a stable installation base for the trigger block 103 and preventing trigger failure due to unstable installation. The precise matching between the contact 104 and the trigger block 103, and the electrical connection design between the push rod 107 and the trigger block 103, allows the push rod 107 to be quickly triggered when the door 2 is closed to a designated position. This drives the sealing strip 106 to descend and adhere to the ground, achieving automatic triggering of the sealing strip 106 when the door 2 is closed, eliminating the need for manual operation. After the door 2 is opened, the contact 104 disengages from the trigger block 103, and the push rod 107 causes the sealing strip 106 to retract into the receiving groove 4. The handle 3 on the door 2 is ergonomically designed, allowing users to easily grip and operate the door 2. The sealing connection between the elastic arc-shaped protruding sealing strip 105 and the sealing groove 101 further enhances the sealing effect between the door 2 and the side of the door frame 1, preventing leaks in the side seal.

[0026] Specifically, to improve the poor sealing performance caused by the unreasonable design of the traditional silent door's sealing structure, an elastic arc-shaped raised sealing strip 105 is fixedly installed on the side of the door body 2. A sealing groove 101 adapted to the elastic arc-shaped raised sealing strip 105 is opened on the inner wall of the door frame 1. When the door body 2 is closed, the elastic arc-shaped raised sealing strip 105 is embedded in the sealing groove 101, forming a tight seal and effectively sealing the gap between the door body 2 and the door frame 1. At the same time, a receiving groove 4 is opened at the bottom of the door body 2, and a sealing strip 106 is installed in the receiving groove 4. The top inner wall of the receiving groove 4 is fixedly installed with... Two sets of top rods 107 are installed, with springs 108 fitted on the top rods 107 and the output shaft connected to the sealing strip 106. A trigger block 103 is provided on the protruding plate 102 fixed at the top of the door frame 1, and a sensor 104 is provided on the door body 2. When the door body 2 is closed, the sensor 104 contacts the trigger block 103. At this time, the top rods 107 drive the sealing strip 106 to descend and fit against the ground, sealing the gap between the door body 2 and the ground. The double sealing structure prevents noise from penetrating through the door gap, significantly improving the overall sound insulation performance and solving the defect that gaps easily form between the traditional door body 2 and the door frame 1, and between the door body 2 and the ground.

[0027] Working principle of this utility model: This utility model is a multi-layer composite structure silent door with high sound insulation. When the door body 2 is pushed by the handle 3 to close towards the door frame 1 through the multi-link assembly, the elastic arc-shaped raised sealing strip 105 on the side of the door body 2 will gradually embed into the matching sealing groove 101 on the inner wall of the door frame 1, forming a preliminary seal between the door body 2 and the door frame 1. At the same time, the sensing contact 104 on the door body 2 will contact the trigger block 103 on the protruding plate 102 at the top of the door frame 1. Since the top rod 107 is electrically connected to the trigger block 103, the trigger block 103 triggers the top rod 107 to move. The output shaft of the top rod 107 pushes the sealing strip 106 to move downward along the receiving groove 4. At this time, the spring 108 sleeved on the circumferential surface of the top rod 107 and connected to the top of the sealing strip 106 and the top of the top rod 107 at both ends is stretched until the seal is achieved. The sealing strip 106 is tightly fitted to the ground, completing the seal between the door 2 and the ground, achieving a double seal to prevent noise from penetrating through the door gaps. In terms of sound insulation, the outer decorative panel 201, the first sound insulation panel 202, the aluminum alloy frame panel 203, the second sound insulation panel 204, and the inner decorative panel 205 of the door 2 work together from the outside to the inside. The first sound insulation panel 202 efficiently absorbs mid-to-high frequency sound waves, and the second sound insulation panel 204 suppresses vibration through damping to reduce the transmission of low-frequency noise. Furthermore, the glass fiber cotton 207 filled in the cavity formed by the horizontally and vertically intersecting reinforcing ribs 206 inside the aluminum alloy frame panel 203 further blocks the propagation of sound waves inside the door 2, ultimately achieving all-round isolation of noise of different frequencies and preventing external noise from entering the room through the door panel. At this point, the entire process is complete.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer composite structure silent door with high sound insulation, comprising a door frame (1) and a door body (2), wherein the door body (2) and the door frame (1) are movably connected by multiple hinges, characterized in that: The door body (2) adopts a multi-layer composite structure, which includes an outer decorative panel (201), a first sound insulation panel (202), an aluminum alloy frame panel (203), a second sound insulation panel (204), and an inner decorative panel (205) from the outside to the inside. An elastic arc-shaped raised sealing strip (105) is fixedly provided on the side of the door body (2). A sealing groove (101) adapted to the elastic arc-shaped raised sealing strip (105) is opened on the inner wall of the door frame (1). A receiving groove (4) is opened at the bottom of the door body (2). A sealing strip (106) is provided in the receiving groove (4). Two sets of symmetrically arranged top rods (107) are fixedly installed on the top inner wall of the receiving groove (4). A spring (108) is sleeved on both sets of top rods (107), and the output shaft of the top rod (107) is fixedly connected to the top of the sealing strip (106).

2. The high sound insulation multi-layer composite structure silent door according to claim 1, characterized in that: The aluminum alloy frame plate (203) is fixedly provided with a number of horizontal and vertically intersecting reinforcing ribs (206), and the cavity formed between the reinforcing ribs (206) is filled with glass fiber cotton (207).

3. The multi-layer composite structure silent door with high sound insulation as described in claim 2, characterized in that: The outer decorative panel (201) and the inner decorative panel (205) are both environmentally friendly solid wood veneer panels, and the surface is treated with wear-resistant and waterproof materials. The first sound insulation panel (202) is a high-density sound insulation sponge panel, and the second sound insulation panel (204) is a damping sound insulation panel and is composed of polymer damping material and substrate.

4. The high sound insulation multi-layer composite structure silent door according to claim 1, characterized in that: The top of the door frame (1) is fixedly provided with a protruding plate (102), and a trigger block (103) is fixedly provided on the protruding plate (102). The door body (2) is provided with a sensing contact (104) that is compatible with the trigger block (103). The top rod (107) is electrically connected to the trigger block (103).

5. A multi-layer composite structure silent door with high sound insulation as described in claim 4, characterized in that: One end of the spring (108) is fixedly connected to the top of the sealing strip (106), and the other end is fixedly connected to the top of the top rod (107), and the spring (108) is movably connected to the circumferential surface of the top rod (107).

6. A multi-layer composite structure silent door with high sound insulation as described in claim 1, characterized in that: The door body (2) is provided with a handle (3), and the elastic arc-shaped raised sealing strip (105) and the sealing groove (101) are connected in a sealed manner.

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