Sound insulation and noise reduction fire-retardant ultralight door panel structure

Abstract

The utility model discloses a kind of sound insulation and noise reduction flame-retardant superlight door panel structure, including top end control slide rail, the top end of top end control slide rail is fixedly connected with vehicle body, the both ends of the bottom of top end control slide rail are fixedly connected with upper end fixed support, the bottom of two upper end fixed supports is equipped with stable door panel structure, the inside one side of top end control slide rail is fixedly provided with transmission arm, the bottom of transmission arm is fixedly connected with translation door panel structure, the one side of translation door panel structure is equipped with engagement structure, a kind of sound insulation and noise reduction flame-retardant superlight door panel structure of the utility model, adopt layered structure, utilize material characteristics and structure design double effect, significantly improve sound insulation and noise reduction effect, select flame-retardant superlight steel sheet and inorganic flame-retardant coating, satisfy high flame-retardant standard, reduce fire risk, lightweight material and optimization structure reduce door panel weight, reduce vehicle body burden, adapt to energy-sensitive scene such as new energy bus, give consideration to safety and practicality.

Description

Technical Field

[0001] This utility model relates to the field of vehicle door technology, specifically to an ultra-lightweight door panel structure that provides sound insulation, noise reduction, and flame retardancy. Background Technology

[0002] A passenger vehicle is a commercial vehicle that carries nine or more people, including the driver's seat, and generally has a square compartment. It is used to carry passengers and their personal luggage. This type of vehicle is mainly used for public transportation and group transportation. Passenger vehicle doors are generally made of steel / aluminum alloy frames with ordinary sheet metal structures, which have problems such as heavy weight, poor sound insulation and limited flame retardancy. Therefore, it is of great significance to invent a sound-insulating, noise-reducing and flame-retardant vehicle door.

[0003] A search revealed a Chinese patent document (publication number: CN214775316U) disclosing a bus door with a protective mechanism, comprising a pneumatic door and a rocker arm. A door lock position is fixedly installed on the bottom of one side of the front surface of the pneumatic door. A rotating seat is fixedly installed on the bottom of the front surface of the pneumatic door. A fixed shaft is rotatably mounted on the inner side of the rotating seat. An integral crossbeam is fixedly installed at one end of the fixed shaft, and a fixing groove is opened on the inner side of the crossbeam. An integral crossbar is provided at one end of the rocker arm. An auxiliary installation positioning device is inserted between the fixed shaft and the rocker arm, and bolts are used for fixing. When the door requires maintenance after a period of use, it facilitates disassembly and repair. The protective frame can prevent passengers from directly leaning against the glass surface, increasing the safety of the pneumatic door to some extent. However, it still has many shortcomings:

[0004] This type of bus door with protective mechanisms focuses on mechanical protection and connection stability. The pneumatic doors and related mechanical components, such as fixed axles, crossbeams, and rocker arms, are mostly made of conventional metal materials and have not been optimized for lightweighting. This not only increases the weight of the vehicle itself, leading to increased energy consumption, but may also affect the opening and closing efficiency of the doors and increase the burden on the drive system. Furthermore, its structural design mainly revolves around the mechanical protection and opening and closing mechanism of the doors. It cannot effectively block or absorb various noises entering the bus during operation, such as engine noise, tire noise, and wind noise, making it difficult to meet passengers' demand for a quiet riding environment. At the same time, in actual bus operation, once a fire occurs, doors made of ordinary materials may burn rapidly, not only failing to delay the spread of fire, but also potentially releasing toxic gases, posing a great threat to the lives of passengers. Therefore, it is still insufficient in terms of practicality. Utility Model Content

[0005] The purpose of this utility model is to provide an ultra-lightweight door panel structure that is soundproof, noise-reducing, and flame-retardant, in order to solve the problems mentioned in the background art. Existing bus doors with protective mechanisms focus on mechanical protection and connection stability. The pneumatic doors and related mechanical components, such as fixed axles, crossbeams, and rocker arms, are mostly made of conventional metal materials and have not been optimized for lightweighting. This not only increases the weight of the vehicle itself, leading to increased energy consumption, but may also affect the opening and closing efficiency of the door and increase the burden on the drive system. Furthermore, their structural design mainly revolves around the mechanical protection and opening and closing mechanism of the door. They cannot effectively block or absorb various noises entering the bus during operation, such as engine noise, tire noise, and wind noise, making it difficult to meet passengers' needs for a quiet riding environment. At the same time, in actual bus operation, once a fire occurs, doors made of ordinary materials may burn rapidly, not only failing to delay the spread of fire, but also potentially releasing toxic gases, posing a great threat to the safety of passengers. Therefore, they are still insufficient in terms of practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultralight door panel structure with sound insulation, noise reduction, and flame retardancy, including a top control slide rail. The top of the top control slide rail is fixedly connected to the vehicle body. Both ends of the bottom of the top control slide rail are fixedly connected to upper fixing brackets. The bottom ends of the two upper fixing brackets are provided with stabilizing door panel structures. A transmission arm is fixedly installed on one side inside the top control slide rail. The bottom end of the transmission arm is fixedly connected to a sliding door panel structure. One side of the sliding door panel structure is provided with a locking structure. By fixing the top control slide rail to the vehicle body, and combining the cooperation of the upper fixing brackets, transmission arm, sliding door panel structure, and locking structure, a stable connection and smooth sliding of the door panel to the vehicle body are achieved, ensuring the stability and controllability of the door panel opening and closing process, and providing a structural foundation for subsequent sound insulation, flame retardancy, and other functions.

[0007] Preferably, the stable door panel structure includes a stable door panel frame, with mounting brackets fixedly connected to both ends of one side of the stable door panel frame. The stable door panel frame contains several evenly distributed stable flame-retardant ultra-light steel plates, and a stable damping sound-absorbing layer is provided between every two stable flame-retardant ultra-light steel plates. The stable door panel frame is fixed by the mounting brackets. The stable flame-retardant ultra-light steel plates inside have both flame-retardant and lightweight characteristics. Combined with the stable damping sound-absorbing layer, it can achieve flame retardancy and sound insulation through the inherent properties of the materials. At the same time, it can reduce noise transmission and enhance the noise reduction effect by utilizing the multi-layer structure of "steel plate-sound-absorbing layer-steel plate-sound-absorbing layer-steel plate", while reducing the overall weight.

[0008] Preferably, the sliding door panel structure includes a sliding door panel frame, on the surface of which a glass window is fixedly installed. The glass window is made of high borosilicate glass. An explosion-proof light is provided at the top of one side of the glass window, and an auxiliary handle is provided at the bottom of one side of the glass window. A ventilation window is provided at the bottom of the sliding door panel frame, and a bottom groove is provided at the bottom of the ventilation window. A guide rod is slidably connected to the surface of the bottom groove, and the end of the guide rod away from the bottom groove is rotatably connected to the bottom of one side of the vehicle body. The high borosilicate glass window on the sliding door panel frame ensures light transmission and is resistant to high temperatures and impacts. The explosion-proof light improves safety in emergencies. The auxiliary handle provides assistance when the door is stuck. The ventilation window can regulate the air inside the vehicle. The cooperation between the bottom groove and the guide rod ensures smooth and stable sliding, balancing functionality and ease of operation.

[0009] Preferably, both sides of the sliding door panel frame are provided with sliding flame-retardant ultra-light steel plates. The positions of the two sliding flame-retardant ultra-light steel plates correspond to the positions of the two stable damping sound-absorbing layers, and a sliding damping sound-absorbing layer is provided between the two sliding flame-retardant ultra-light steel plates. The position of the sliding damping sound-absorbing layer corresponds to the position of one of the stable flame-retardant ultra-light steel plates. The sliding flame-retardant ultra-light steel plates and the sliding damping sound-absorbing layer form a three-layer structure of "steel plate - sound-absorbing layer - steel plate", which echoes the layered design of the stable door panel frame. While ensuring flame retardancy and lightweight, the sound insulation and noise reduction effect is enhanced through the dual effects of material properties and structural design. Moreover, the lightweight material avoids increasing the burden on the door panel and does not affect normal use.

[0010] Preferably, both the surface of the sliding door panel frame and the surface of the stable door panel frame are covered with an inorganic flame-retardant coating, and the bottom end of the sliding door panel frame is provided with a door mounting base. The two ends of the door mounting base are respectively connected to the bottom ends of the two stable door panel frames. The inorganic flame-retardant coating further improves the overall flame-retardant performance of the door panel and strengthens fire protection. The door mounting base contacts the bottom end of the stable door panel frame, enhancing the overall stability of the door panel structure, avoiding loosening caused by vibration during use, and extending the service life.

[0011] Preferably, the locking structure includes a side buckle, one end of which is movably connected to a latch. One end of the latch is embedded in one side of the middle of one of the stable door panel frames. A return spring is fixedly connected to one side of the latch. The end of the return spring away from the latch is movably connected to one side of the middle of one of the stable door panel frames. One side of one of the stable door panel frames is equipped with an anti-pinch sensor, and one side of the anti-pinch sensor is equipped with a buzzer alarm. The cooperation between the side buckle and the latch enables a stable locking between the sliding door panel structure and the stable door panel structure, ensuring the airtightness of the door after it is closed and reducing noise penetration caused by gaps. At the same time, the return spring allows the latch to automatically reset after unlocking, ensuring the reliability of the locking structure for repeated use. Meanwhile, the anti-pinch sensor can monitor in real time whether there are foreign objects during the door closing process. Once triggered, the buzzer alarm will immediately sound a warning to remind the driver and passengers to deal with the situation in time and avoid pinching accidents, significantly improving the safety of use.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This ultralight door panel structure achieves multiple core advantages through a layered design of a stable door panel frame and a sliding door panel frame, combined with flame-retardant ultralight steel plates and a damping sound-absorbing layer. First, the layered structure, utilizing both material properties and structural design, significantly improves sound insulation and noise reduction, weakening noise transmission. Second, the use of flame-retardant ultralight steel plates and inorganic flame-retardant coatings meets high flame-retardant standards, reducing fire risk. Third, lightweight materials and optimized structure reduce door panel weight, lessening the burden on the vehicle body and making it suitable for energy-sensitive scenarios such as new energy buses. Fourth, the coordinated operation of various components ensures stable door panel opening and closing and complete functionality, balancing safety and practicality. Furthermore, the five-layer structure of the stable door panel frame and the three-layer structure of the sliding door panel frame, by layer-by-layer noise reduction and enhanced flame-retardant performance, achieve sound insulation, flame retardancy, and ultralightness without affecting normal door use, highlighting the optimized comprehensive performance of this structure and providing a more efficient, safe, and lightweight solution for bus doors. Attached Figure Description

[0014] Figure 1 This is a front view of the ultralight door panel structure of this utility model;

[0015] Figure 2 This is a rear view of the ultralight door panel structure of this utility model;

[0016] Figure 3 This is an internal structural diagram of the ultralight door panel structure of this utility model;

[0017] Figure 4 This is a top view of the ultralight door panel structure of this utility model;

[0018] Figure 5 This is a side view of the ultralight door panel structure of this utility model.

[0019] In the diagram: 1. Top control slide rail; 2. Upper fixed bracket; 3. Transmission arm; 4. Stabilizing door panel frame; 5. Mounting bracket; 6. Stabilizing flame-retardant ultra-light steel plate; 7. Stabilizing damping sound-absorbing layer; 8. Sliding door panel frame; 9. Glass window; 10. Explosion-proof light; 11. Auxiliary handle; 12. Ventilation window; 13. Bottom slide groove; 14. Guide rod; 15. Sliding flame-retardant ultra-light steel plate; 16. Sliding damping sound-absorbing layer; 17. Side buckle; 18. Clip; 19. Return spring; 20. Anti-pinch sensor; 21. Buzzer alarm; 22. Door mounting base. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figure 1-5 This utility model provides an ultra-lightweight door panel structure with sound insulation, noise reduction and flame retardancy, including a top control slide rail 1. The top of the top control slide rail 1 is fixedly connected to the vehicle body. Both ends of the bottom of the top control slide rail 1 are fixedly connected to the upper fixing brackets 2. The bottom ends of the two upper fixing brackets 2 are provided with a stable door panel structure. A transmission arm 3 is fixedly installed on one side inside the top control slide rail 1. The bottom end of the transmission arm 3 is fixedly connected to a sliding door panel structure. A locking structure is provided on one side of the sliding door panel structure.

[0022] In use, the entire door panel structure is first fixed to the vehicle body by the top control slide rail 1 to ensure a stable connection. When the door needs to be opened or closed, the transmission arm 3 inside the top control slide rail 1 is activated, which drives the sliding door panel structure to move along the set trajectory. At the same time, the upper fixed bracket 2 provides support for the stable door panel structure, ensuring the stability of the door panel structure throughout the process. Finally, the locking structure enables the precise docking or separation of the sliding door panel structure and the stable door panel structure.

[0023] Furthermore, the stable door panel structure includes a stable door panel frame 4, with mounting brackets 5 fixedly connected to both ends of one side of the stable door panel frame 4. The interior of the stable door panel frame 4 is provided with several evenly distributed stable flame-retardant ultra-light steel plates 6, and a stable damping sound-absorbing layer 7 is provided between every two stable flame-retardant ultra-light steel plates 6.

[0024] When in use, the stable door panel structure is first fixed to the corresponding position on the vehicle body by using the mounting bracket 5 on one side of the stable door panel frame 4. The stable flame-retardant ultra-light steel plate 6 and the stable damping sound-absorbing layer 7 inside the stable door panel frame 4 continue to play a role during the use of the door. The stable flame-retardant ultra-light steel plate 6 provides flame-retardant protection and structural support, while the stable damping sound-absorbing layer 7 continuously absorbs and weakens the noise transmitted to it. The two work together to achieve stable sound insulation and noise reduction and flame retardant effect.

[0025] Furthermore, the sliding door panel structure includes a sliding door panel frame 8, a glass window 9 fixedly installed on the surface of the sliding door panel frame 8, the glass window 9 being made of high borosilicate glass material, an explosion-proof light 10 being installed at the top of one side of the glass window 9, an auxiliary handle 11 being installed at the bottom of one side of the glass window 9, a ventilation window 12 being opened at the bottom of the sliding door panel frame 8, a bottom groove 13 being opened at the bottom of the ventilation window 12, a guide rod 14 being slidably connected to the surface of the bottom groove 13, and the end of the guide rod 14 away from the bottom groove 13 being rotatably connected to the bottom of one side of the vehicle body;

[0026] When in use, when the transmission arm 3 drives the sliding door panel structure to move, the bottom slide groove 13 at the bottom end of the sliding door panel frame 8 slides along the guide rod 14 to ensure the smoothness of the translation process. The glass window 9 is used for people inside the vehicle to observe the external situation. The explosion-proof light 10 can be turned on to provide lighting in an emergency. The auxiliary handle 11 is used by passengers to hold and assist when opening and closing the door or getting on and off the vehicle, or to provide assistance when the door is stuck. The ventilation window 12 regulates the air inside the vehicle.

[0027] Furthermore, both sides of the interior of the sliding door frame 8 are provided with sliding flame-retardant ultra-light steel plates 15. The positions of the two sliding flame-retardant ultra-light steel plates 15 correspond to the positions of the two stable damping sound-absorbing layers 7, and a sliding damping sound-absorbing layer 16 is provided between the two sliding flame-retardant ultra-light steel plates 15. The position of the sliding damping sound-absorbing layer 16 corresponds to the position of one of the stable flame-retardant ultra-light steel plates 6.

[0028] During use, the sliding door panel frame 8 moves and is closed, and the internal sliding flame-retardant ultra-light steel plate 15 and sliding damping sound-absorbing layer 16 work continuously. The sliding flame-retardant ultra-light steel plate 15 enhances the flame-retardant performance and structural strength of the door panel, and the sliding damping sound-absorbing layer 16 absorbs noise. Both correspond to the internal structure of the stable door panel frame 4, forming a double sound insulation and flame-retardant barrier when the door is closed.

[0029] Furthermore, both the surface of the sliding door panel frame 8 and the surface of the stable door panel frame 4 are covered with an inorganic flame-retardant coating, and the bottom end of the sliding door panel frame 8 is provided with a door mounting base 22, the two ends of which are respectively connected to the bottom ends of the two stable door panel frames 4.

[0030] During use, the inorganic flame-retardant coating on the surface of the sliding door panel frame 8 and the stable door panel frame 4 always provides external flame-retardant protection for the door panel, especially in the event of a fire, it can delay combustion. The door mounting base 22 supports the bottom of the sliding door panel frame 8 during the use of the door and keeps in contact with the bottom of the stable door panel frame 4, thereby enhancing the stability of the bottom of the entire door panel structure and reducing the impact of vibration.

[0031] Furthermore, the locking structure includes a side buckle 17, one end of which is movably connected to a buckle 18. One end of the buckle 18 is embedded in one side of the middle of one of the stable door panel frames 4. A return spring 19 is fixedly connected to one side of the buckle 18. The end of the return spring 19 away from the buckle 18 is movably connected to one side of the middle of one of the stable door panel frames 4. An anti-pinch sensor 20 is provided on one side of one of the stable door panel frames 4, and a buzzer alarm 21 is provided on one side of the anti-pinch sensor 20.

[0032] During use, as the sliding door panel closes, the side latch 17 gradually approaches and engages with the latch 18, achieving a tight closure of the door panel. At this time, the return spring 19 is in a compressed state. When the door needs to be opened, the latch 18 disengages from the side latch 17 under the action of the relevant mechanism, and the return spring 19 drives the latch 18 to reset. Throughout the closing process, the anti-pinch sensor 20 monitors in real time. If a foreign object is detected, the buzzer alarm 21 immediately sounds an alarm to remind the user to stop the closing action.

[0033] In this embodiment, the entire door panel structure is fixed to the vehicle body via the top control slide rail 1. Simultaneously, the stable door panel structure is fixed to the corresponding position on the vehicle body using the mounting bracket 5 on one side of the stable door panel frame 4. The door mounting base 22 ensures the overall structure is securely installed. When the driver opens or closes the door, the transmission arm 3 drives the sliding door panel structure to move, and the bottom slide groove 13 slides along the guide rod 14, separating the sliding door panel structure from the stable door panel structure, thus opening the door. During this process, the latch 18 disengages from the side latch 17 under the action of the relevant mechanism, and the return spring 19 drives the latch... When buckle 18 is reset, transmission arm 3 drives the sliding door panel structure in the reverse direction, causing it to move towards the stable door panel structure. The bottom slide groove 13 slides in the reverse direction along the guide rod 14, and the sliding door panel structure gradually approaches the stable door panel structure. The side buckle 17 in the locking structure gradually engages with buckle 18, achieving a tight closure of the door panel. During the use of the car door, the stable flame-retardant ultra-light steel plate 6 and the stable damping sound-absorbing layer 7 inside the stable door panel frame 4 work together with the sliding flame-retardant ultra-light steel plate 15 and the sliding damping sound-absorbing layer 16 inside the sliding door panel frame 8 to continuously play the role of sound insulation, noise reduction and flame retardancy.

[0034] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A soundproofing, noise-reducing, fire-retardant, ultra-light door panel structure comprising a top end control sliding rail (1), characterized in that: The top end of the top control slide rail (1) is fixedly connected to the vehicle body. Both ends of the bottom of the top control slide rail (1) are fixedly connected to the upper fixed bracket (2). The bottom ends of the two upper fixed brackets (2) are provided with a stable door panel structure. A transmission arm (3) is fixedly installed on one side inside the top control slide rail (1). The bottom end of the transmission arm (3) is fixedly connected to a sliding door panel structure. A locking structure is provided on one side of the sliding door panel structure.

2. A soundproofing and noise-reducing fire-retardant ultralight door panel structure according to claim 1, characterized in that: The stable door panel structure includes a stable door panel frame (4), and mounting brackets (5) are fixedly connected to both ends of one side of the stable door panel frame (4). The interior of the stable door panel frame (4) is provided with several evenly distributed stable flame-retardant ultra-light steel plates (6), and a stable damping sound-absorbing layer (7) is provided between every two stable flame-retardant ultra-light steel plates (6).

3. A soundproofing and noise-reducing fire-retardant ultralight door panel structure according to claim 1, characterized in that: The sliding door panel structure includes a sliding door panel frame (8), and a glass window (9) is fixedly provided on the surface of the sliding door panel frame (8). The glass window (9) is made of high borosilicate glass material. An explosion-proof light (10) is provided at the top of one side of the glass window (9), and an auxiliary handle (11) is provided at the bottom of one side of the glass window (9). A ventilation window (12) is provided at the bottom of the sliding door panel frame (8), and a bottom groove (13) is provided at the bottom of the ventilation window (12). A guide rod (14) is slidably connected to the surface of the bottom groove (13), and the end of the guide rod (14) away from the bottom groove (13) is rotatably connected to the bottom of one side of the vehicle body.

4. A soundproofing and noise-reducing, fire-retardant, ultra-light door panel structure according to claim 3, characterized in that: The sliding door frame (8) has two sliding flame-retardant ultra-light steel plates (15) on both sides inside. The positions of the two sliding flame-retardant ultra-light steel plates (15) correspond to the positions of the two stable damping sound-absorbing layers (7) respectively. A sliding damping sound-absorbing layer (16) is provided between the two sliding flame-retardant ultra-light steel plates (15). The position of the sliding damping sound-absorbing layer (16) corresponds to the position of one of the stable flame-retardant ultra-light steel plates (6).

5. A soundproofing and noise-reducing, fire-retardant, ultra-light door panel structure according to claim 3, characterized in that: The surfaces of the sliding door frame (8) and the stable door frame (4) are covered with an inorganic flame-retardant coating, and the bottom end of the sliding door frame (8) is provided with a door mounting base (22), and the two ends of the door mounting base (22) are respectively connected to the bottom ends of the two stable door frames (4).

6. A soundproofing and noise-reducing fire-retardant ultralight door panel structure according to claim 1, characterized in that: The locking structure includes a side buckle (17), one end of which is movably connected to a buckle (18). One end of the buckle (18) is embedded in one side of the middle of one of the stable door panel frames (4). A return spring (19) is fixedly connected to one side of the buckle (18). The end of the return spring (19) away from the buckle (18) is movably connected to one side of the middle of one of the stable door panel frames (4). One side of one of the stable door panel frames (4) is provided with an anti-pinch sensor (20), and one side of the anti-pinch sensor (20) is provided with a buzzer alarm (21).

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