Seat backrest structure with ventilation and noise reduction functions

Abstract

The utility model relates to the field of seats, in particular to a seat backrest structure with ventilation and noise reduction functions, which comprises backrest foam, a back plate, a ventilation fan and a support component, and the support component comprises a support block, an anti-collision hard block, a sound blocking cavity and a support felt. According to the utility model, the ventilating duct structure with the sound blocking cavity is designed, air flow generated when the ventilating fan works is evacuated through the ventilating assembly, and generated noise is isolated by the sound blocking cavity, so that the ventilating noise can be effectively reduced, and when the seat backrest is impacted, the sound blocking cavity can block the sound blocking cavity. Compared with a traditional backrest spring frame installation scheme, the backrest spring frame installation structure is low in cost, simple in structure and convenient to assemble.

Description

Technical Field

[0001] This utility model relates to the field of seating, and in particular to a seat back structure. Background Technology

[0002] Currently, the conventional installation method for ventilation products on seats with metal backrests is to place the fan at the top of the backrest. This is because placing the fan in the middle leaves no space for a support structure on the backrest. Furthermore, the fan itself generates vibration and noise when it is working. Placing the fan at the top of the backrest results in poor noise perception and comfort for passengers inside the vehicle.

[0003] The technical problem to be solved by this application is: how to reduce noise when a ventilation product is installed on a backrest with a back panel. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a seat back structure with ventilation and noise reduction.

[0005] The technical solution adopted by this utility model is: a seat back structure with ventilation and noise reduction, including a back foam, a back panel, and a ventilation component, wherein the ventilation component includes a ventilation fan. The feature is that it also includes a support component, wherein the support component includes a support block, the ventilation component is fixedly disposed on the side of the back foam close to the support block, the support block is provided with a sound-blocking cavity, and the ventilation fan is fixedly disposed in the sound-blocking cavity.

[0006] In some embodiments, the support assembly includes a shock-absorbing block disposed on the inner wall of the sound-absorbing cavity and surrounding the ventilation fan.

[0007] In some implementations, a support pad is provided on the side of the support block near the back plate.

[0008] In some embodiments, a receiving cavity is provided on the side of the backrest foam near the ventilation fan, the receiving cavity is located in the middle of the backrest foam, and the support assembly is disposed in the receiving cavity.

[0009] In some embodiments, the support block is provided with an air inlet cavity connected to the sound-absorbing cavity, and the back plate is provided with an air inlet hole connected to the air inlet cavity.

[0010] The beneficial effects of this utility model are as follows:

[0011] This ventilated and noise-reducing seat back structure effectively isolates noise transmission by arranging the ventilation fan within the support block, thus reducing ventilation noise. The support block provides effective support to the seat back without affecting its comfort. When the seat back is subjected to impact, it prevents the ventilation fan from hitting the metal back panel, thus preventing impact noise and fan damage. Compared with the seat back spring frame installation method, this structure is low in cost, simple in structure, and convenient to assemble, and can further reduce the probability of abnormal noise. Attached Figure Description

[0012] Figure 1 This is an exploded view of the structure in the embodiment;

[0013] Figure 2 A schematic diagram showing the structural connections of the backrest foam, ventilation fan, and support components;

[0014] Figure 3 An exploded structural diagram of the ventilation fan, ventilation components, and support components;

[0015] The labels and names in the diagram correspond as follows: 1. Backrest foam; 2. Back panel; 3. Ventilation component; 31. Ventilation fan; 4. Support component; 11. Receiving cavity; 12. Ventilation hole; 21. Air inlet hole; 41. Support block; 42. Anti-collision block; 43. Sound-damping cavity; 44. Support pad; 45. Air inlet cavity. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-2 This utility model provides a technical solution: a seat back structure with ventilation and noise reduction, including a backrest foam 1, a back panel 2, a ventilation component 3, and a support component 4. The ventilation component 3 includes a ventilation fan 31. The ventilation component 3 and the support component 4 are disposed between the backrest foam 1 and the back panel 2, and the ventilation fan 31 is mounted on the back panel 2 via the support component 4. In actual use, the human body leans against the backrest foam 1.

[0018] The backrest foam 1 has a receiving cavity 11 on the side near the ventilation fan 31. The receiving cavity 11 is located in the middle of the backrest foam 1. The ventilation fan 31 and the support assembly 4 are located in the receiving cavity 11. Since no additional shaping is required, the shape of the backrest foam 1 can be designed more freely. The center of the backrest foam 1 has several ventilation holes 12 that communicate with the receiving cavity 11. The airflow generated by the ventilation fan 31 flows through the ventilation holes 12, thereby improving the air circulation environment of the part of the human body that contacts the seat.

[0019] Please see Figure 3 The support component 4 includes a support block 41. Preferably, the support block 41 is made of a material with sound-absorbing and supporting functions, such as foam. The ventilation component 3 is located on the side of the backrest foam 1 near the support block 41. The support block 41 has a sound-insulating cavity 43, which is located in the middle of the support block 41. The ventilation fan 31 is fixedly installed in the sound-insulating cavity 43, and the inner wall of the sound-insulating cavity 43 surrounds the ventilation fan 31. The ventilation fan 31 is arranged in the middle of the backrest foam 1 to facilitate the uniformity of ventilation and reduce noise during ventilation. The ventilation component 3 has a connecting hole that communicates with the sound-insulating cavity 43. The sound-insulating cavity 43 is connected to the ventilation hole 12 through the connecting hole. The airflow generated by the ventilation fan 31 can only reach the ventilation hole 12 through the connecting hole. The human body experiences the wind force through the ventilation hole 12, which removes heat. The ventilation fan 31 and the connecting hole are on the same axis, ensuring that the airflow generated by the ventilation fan 31 flows directly out of the connecting hole, and at the same time, it helps the air in the receiving cavity 11 to flow orderly to the ventilation fan 31. To prevent the ventilation component 3 from shifting, the receiving cavity 11 is provided with a support groove communicating with the ventilation hole 12, and the ventilation component 3 is disposed in the support groove. The ventilation component 3 is fixedly connected to the backrest foam 1, and the support block 41 is fixedly connected to the back panel 2. The ventilation component 3 and the support block 41 provide effective support for the backrest foam 1, and at the same time, prevent the ventilation fan 31 from directly impacting the back panel 2 when external force is applied to the backrest. The support block 41 can buffer external force and block the ventilation fan 31 and the back panel 2. In addition, since the ventilation fan 31 is disposed in the sound-insulating cavity 43 of the support block 41, the sound-insulating cavity 43 has a closed-loop structure around the ventilation fan 31, which effectively blocks the transmission of noise, reduces noise, and improves the user experience and comfort.

[0020] The support block 41 is provided with an air inlet cavity 45 connected to the sound-absorbing cavity 43, and the back plate 2 is provided with an air inlet hole 21 connected to the air inlet cavity 45. Air from the outside or inside enters or exits the sound-absorbing cavity 43 through the air inlet hole 21.

[0021] To enhance the strength within the sound-absorbing cavity 43, in this embodiment, preferably, the support assembly 4 includes an anti-collision block 42. The anti-collision block 42 is disposed on the inner wall of the sound-absorbing cavity 43 and is fixedly embedded within the support block 41. The anti-collision block 42 surrounds the ventilation fan 31. When the backrest is subjected to a strong impact, if the anti-collision block 42 is not present, it will be compressed to its limit under the impact, causing the ventilation fan 31 to collide with the back panel 2, resulting in damage to the ventilation fan 31 and abnormal noise. If an anti-collision block 42 is added in this situation, it will function to increase the strength of the support block 41 around the ventilation fan 31 and prevent the ventilation fan 31 from impacting the back panel 2.

[0022] To reduce noise between the support block 41 and the back plate 2, a support pad 44 is provided on the side of the support block 41 near the back plate. The support pad 44 is fixedly connected to the support block 41 by plastic clips. The support pad 44 can reduce the sound of the support block 41 hitting the back plate 2.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A seat back structure with ventilation and noise reduction, comprising a backrest foam (1), a back panel (2), and a ventilation assembly (3), wherein the ventilation assembly (3) includes a ventilation fan (31), characterized in that, It also includes a support component (4), which includes a support block (41). The ventilation component (3) is fixedly disposed on the side of the backrest foam (1) near the support block (41). The support block (41) is provided with a sound-blocking cavity (43). The ventilation fan (31) is fixedly disposed in the sound-blocking cavity (43).

2. The seat back structure with ventilation and noise reduction according to claim 1, characterized in that, The support assembly (4) includes a shock-absorbing block (42) disposed on the inner wall of the sound-absorbing cavity (43) and arranged around the ventilation fan (31).

3. The seat back structure with ventilation and noise reduction according to claim 1, characterized in that, The support block (41) has a support pad (44) on the side near the back plate (2).

4. The seat back structure with ventilation and noise reduction according to claim 1, characterized in that, The backrest foam (1) has a receiving cavity (11) on the side near the ventilation fan (31), the receiving cavity (11) is located in the middle of the backrest foam (1), and the support assembly (4) is located in the receiving cavity (11).

5. The seat back structure with ventilation and noise reduction according to claim 1, characterized in that, The support block (41) is provided with an air inlet cavity (45) connected to the sound-absorbing cavity (43), and the back plate is provided with an air inlet hole (21) connected to the air inlet cavity (45).

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