Automobile seat and vehicle

By designing an inverted "V"-shaped airbag assembly on the car seat, combined with air source and valve control, the problem of mismatched support for occupants of different body types is solved, achieving precise back massage and support, and improving riding comfort.

CN223494362UActive Publication Date: 2025-10-31TANGTRING SEATING TECH INC
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Patent Information

Application Number
CN202422953190.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-10-31
Estimated Expiration
2034-11-29

AI Technical Summary

Technical Problem

Existing car seat back support strategies cannot match occupants of different body types, resulting in poor support and a poor riding experience.

Method used

Design a car seat with an airbag assembly including a first airbag, a second airbag, multiple third airbags and multiple fourth airbags, which are connected to an air source through a valve body. The airbag assembly is arranged in an inverted "V" shape, and the airbag assembly is inflated and deflated to accommodate occupants of different heights and weights.

Benefits of technology

It achieves precise massage and support for the backs of passengers of different heights and weights, improving riding comfort and user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model relates to the technical field of vehicles, in particular to an automobile seat and a vehicle, the automobile seat comprises a seat cushion, a seat backrest, an air bag assembly, a valve body and an air source, and the automobile seat is provided with a central axis; the air bag assembly is arranged on the seat backrest; the air bag assembly comprises a first air bag, a second air bag, a plurality of third air bags and a plurality of fourth air bags; the first air bag, the second air bag, the plurality of third air bags and the plurality of fourth air bags are all communicated with an air source through a valve body; the multiple third air bags are fixed to the first air bag, the multiple fourth air bags are fixed to the second air bag, the multiple third air bags and the multiple fourth air bags are symmetrically arranged about the central axis, and in the multiple third air bags, the farther the third air bag is away from the seat cushion, the larger the distance between the third air bag and the central axis is. The different third air bag and the fourth air bag are combined for inflation and deflation so as to act on the passengers, the backs of the passengers with different heights and sizes can be accurately massaged, and the user experience is good.
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Description

Technical Field

[0001] This application relates to the field of transportation technology, and more particularly to a car seat and a vehicle. Background Technology

[0002] With the development of automotive seat technology, smart cars are gradually becoming the new darlings of the market. These cars not only offer intelligent functions such as navigation, automatic parking, and emergency braking, but also begin to focus on the passenger experience. Smart cars equipped with seat comfort systems can provide passengers with a more relaxed and enjoyable driving / journey experience. These seat comfort systems are typically pneumatic systems; airbags installed inside the seat upholstery provide more comprehensive support for the human body. By increasing the contact area with the body, body pressure is distributed more evenly, reducing the need for spinal support and thus alleviating musculoskeletal stress, thereby providing a more comfortable riding experience for occupants.

[0003] However, in the process of implementing this application, the applicant discovered that: due to the large differences in body size among different occupants, the support strategies of car seats, especially the back support strategies, all adopt uniform specifications, which makes it impossible to match occupants of different body types in actual use. That is, the support effect is not good for occupants of different body types, especially in the back area, where it is impossible to provide support that is adapted to the occupant's body type, and thus it is impossible to provide occupants with a more comfortable riding experience. Utility Model Content

[0004] In view of the above problems, this application provides a car seat and a vehicle that overcomes or at least partially solves the technical problem that the existing back airbags cannot match the height and size of the occupants, resulting in a poor occupant experience.

[0005] According to one aspect of the embodiments of this application, a car seat is provided, including: a seat cushion, a seat back, an airbag assembly, a valve body, and an air source, and the car seat has a central axis; the airbag assembly is disposed on the seat back; the airbag assembly includes a first airbag, a second airbag, a plurality of third airbags, and a plurality of fourth airbags; the first airbag, the second airbag, the plurality of third airbags, and the plurality of fourth airbags are all connected to the air source through the valve body; the plurality of third airbags are fixed to the first airbag, the plurality of fourth airbags are fixed to the second airbag, the plurality of third airbags and the plurality of fourth airbags are symmetrically arranged about the central axis, and among the plurality of third airbags, the third airbag farther from the seat cushion is further away from the central axis.

[0006] In one alternative embodiment, the number of the third airbags is three, and the number of the fourth airbags is three.

[0007] In one alternative configuration, the first air bag is bent away from the second air bag, and the line connecting the plurality of third air bags protrudes toward the central axis.

[0008] In one alternative configuration, the first air bag, which is bent, forms a first bend point, and the third air bag, located in the middle, is disposed at the first bend point; the second air bag, which is bent, forms a second bend point, and the fourth air bag, located in the middle, is disposed at the second bend point.

[0009] In one alternative embodiment, the third air bag includes multiple layers of first sub-air bags, one of which is connected to the air source via the valve body; the fourth air bag includes multiple layers of second sub-air bags, one of which is connected to the air source via the valve body.

[0010] In one alternative embodiment, the car seat further includes a controller connected to the valve body, the controller being used to control the air source to inflate the first air bag, a plurality of the third air bags, the second air bag, and a plurality of the fourth air bags respectively via the valve body.

[0011] In one optional embodiment, the plurality of third airbags include a left-first airbag, a left-second airbag, and a left-third airbag sequentially located away from the seat cushion; the plurality of fourth airbags include a right-first airbag, a right-second airbag, and a right-third airbag sequentially located away from the seat cushion; under a first preset condition, the controller controls the air source to inflate the left-second airbag, the left-third airbag, the right-second airbag, and the right-third airbag; under a second preset condition, the controller controls the air source to inflate the left-third airbag and the right-third airbag; under a third preset condition, the controller controls the air source to inflate the left-second airbag and the right-second airbag; under a fourth preset condition, the controller controls the air source to inflate the left-first airbag, the left-second airbag, the right-first airbag, and the right-second airbag; under a fifth preset condition, the controller controls the air source to inflate the left-first airbag and the right-first airbag.

[0012] In one alternative embodiment, the car seat further includes a pressure sensor disposed on the seat back, the pressure sensor being used to provide back-sensing data when the occupant's back is acting on the seat back.

[0013] In one alternative embodiment, the pressure sensor includes a pressure-sensing pad.

[0014] According to one aspect of the embodiments of this application, a means of transportation is provided, including the aforementioned car seat.

[0015] The beneficial effects of this application embodiment include: the car seat includes: a seat cushion, a seat back, an airbag assembly, a valve body, and an air source, and the car seat has a central axis; the airbag assembly is disposed on the seat back; the airbag assembly includes a first airbag, a second airbag, a plurality of third airbags, and a plurality of fourth airbags; the first airbag, the second airbag, the plurality of third airbags, and the plurality of fourth airbags are all connected to the air source through the valve body; the plurality of third airbags are fixed to the first airbag, the plurality of fourth airbags are fixed to the second airbag, the plurality of third airbags and the plurality of fourth airbags are symmetrically arranged about the central axis, and among the plurality of third airbags, the third airbag farther from the seat cushion has a greater distance from the central axis. The car seat provided in this application embodiment is equivalent to the first and second airbags in the airbag assembly being arranged in an inverted "V" shape on the seat back. Due to the arrangement of multiple third and fourth airbags, different third and fourth airbags can be combined for inflation, thereby acting on the occupant. This allows for precise massage of the backs of occupants with different heights and sizes. By combining the inflation and deflation of the third and fourth airbags, precise massage of the backs of occupants with different weights can also be provided, resulting in a good user experience. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is a schematic diagram of a car seat provided in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of one direction of the airbag assembly provided in the embodiments of this application;

[0019] Figure 3 This is a schematic diagram of another implementation of the airbag assembly provided in the embodiments of this application;

[0020] Figure 4 This is a schematic diagram of the airbag assembly provided in an embodiment of this application from another direction. Detailed Implementation

[0021] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0023] This application provides a means of transportation, which can be any means of transport that can be equipped with the car seats shown below, such as cars, vans, trucks, etc.

[0024] This application also provides an embodiment of a car seat 1000, please refer to [link / reference]. Figure 1 The car seat 1000 includes an airbag assembly 100, a seat back 200, an air source 300, a controller 400, a pressure sensor 500, a seat cushion 600, and a valve body (not shown). The car seat 100 has a central axis L1. The seat back 200 is connected to the seat cushion 600, and when an occupant sits on the seat cushion 600, the seat back 200 supports the pressure on the occupant's back and waist. The airbag assembly 100 is disposed on the seat back 200 and provides a massage-like comfort experience for the occupant's back. The airbag assembly 100 is connected to the air source 300 via the valve body. The controller 400 is connected to the valve body and controls the air source 300 to inflate the airbag assembly 100 via the valve body. The pressure sensor 500 provides sensing data when an occupant applies pressure to the car seat 1000.

[0025] It is worth noting that, due to differences in human body shape, the airbag assembly 100 has a greater impact on back support than on waist support; therefore, the airbag assembly 100 is designed for the occupant's back.

[0026] Please refer to the above-mentioned airbag assembly 100 as well. Figure 1 and Figure 2The airbag assembly 100 includes a first airbag 10, a second airbag 20, a plurality of third airbags 30, and a plurality of fourth airbags 40. The first airbag 10, the second airbag 20, the plurality of third airbags 30, and the plurality of fourth airbags 40 are all connected to the air source via the valve body, facilitating individual control of the inflation time and / or inflation volume of each airbag. The plurality of third airbags 30 are fixed to the first airbag 10, and the plurality of fourth airbags 40 are fixed to the second airbag 20. The plurality of third airbags 30 and the plurality of fourth airbags 40 are arranged symmetrically about the central axis L1, and among the plurality of third airbags 30, the distance of the third airbag 30 from the seat cushion 600 is greater than the distance from the central axis L1. This means that the first airbag 10 and the second airbag 20 in the airbag assembly 100 are arranged in an inverted "V" shape on the seat back 200 of the car seat 1000. Due to the arrangement of multiple third airbags 30 and multiple fourth airbags 40, different third airbags 30 and fourth airbags 40 can be combined to inflate and thus act on the occupant, so as to provide precise massage to the back of occupants with different heights and sizes; by combining the inflation and deflation of the third airbags 30 and fourth airbags 40, precise massage can also be provided to the back of occupants with different weights, resulting in a good user experience.

[0027] Furthermore, since each third airbag 30 is connected to the air source 300 via a valve body, the inflation time and / or inflation volume of each third airbag 30 can be controlled by the air source 300 and the valve body, respectively. Similarly, since each fourth airbag 40 is connected to the air source 300 via a valve body, the inflation time and / or inflation volume of each fourth airbag 40 can be controlled by the air source 300 and the valve body, respectively. With this setting, different third airbags 30 can have different inflation volumes, that is, different third airbags 30 can inflate to different heights, and different fourth airbags 40 can have different inflation volumes, that is, different fourth airbags 40 can inflate to different heights. Thus, the inflation volumes of multiple third airbags 30 and multiple fourth airbags 40 can match the back curves of different occupants, improving the user experience.

[0028] It is worth noting that the first air bag 10 may also be provided with a first air port 12, so as to communicate with the valve body and the air source 300 through the first air port 11. The second air bag 20 may also be provided with a second air port 22, so as to communicate with the valve body and the air source 300 through the second air port 22. The plurality of third air bags 30 may each be provided with a third air port 31, so as to communicate with the valve body and the air source 300 through the third air port 31. The plurality of fourth air bags 40 may each be provided with a fourth air port 41, so as to communicate with the valve body and the air source 300 through the fourth air port 41.

[0029] It is worth noting that the first airbag 10 and the second airbag 20 are arranged in an inverted "V" shape on the seat back 200 of the car seat 1000. This allows the first airbag 10, the second airbag 20, multiple third airbags 30, and multiple fourth airbags 40 to act on the two shoulder blades of the occupant's back, achieving massage and relaxation of the occupant's shoulder blade area. This design not only improves the targeting of the massage, but the inverted "V" shape also effectively disperses back pressure on the occupant, reducing discomfort that may be caused by prolonged sitting in the car seat 1000.

[0030] It's worth noting that the centerline L1 of the Car Seat 1000 is an important ergonomic concept. It refers to a reference line in the design of the Car Seat 1000, used to ensure that all parts of the Car Seat 1000 are aligned with the human spine and body centerline to provide optimal comfort and safety. Ergonomics proposes the theory of the human body's centerline, considering it as the central hub of human health, controlling the body's dynamic balance and coordinating the relationship between humans and nature, as well as the human body itself. Considering the centerline during the design process helps determine the appropriate balance point, allowing users to operate the product or space in a more comfortable posture and with greater intuitiveness. In the design of the Car Seat 1000, the centerline L1 is used to ensure that all parts of the Car Seat 1000 are aligned with the human spine and body centerline. For example, in some car seat designs, the center of the car seat is integrated with a HUD (Head-Up Display, a display technology that projects information directly into the user's field of vision, allowing the user to view information while keeping their eyes forward), a rotating instrument panel, a three-spoke D-shaped steering wheel, and a sporty car seat. When the user sits in the driver's seat, the human's central axis coincides with the technological driving axis, so that both eye movement and driving operation can conform to the body's intuition and habits.

[0031] It is worth noting that in some embodiments, the number of the third airbags 30 is equal to the number of the fourth airbags 40.

[0032] It is worth noting that in some embodiments, there are three third air bags 30 and three fourth air bags 40. That is, the three third air bags 30 are distributed in the first air bag 10, and the three fourth air bags 40 are distributed in the second air bag 20. Thus, when the three third air bags 30 and the three fourth air bags 40 are used in combination, they can provide precise massage to the backs of occupants with different heights and sizes.

[0033] For details, please refer to Figure 1The plurality of third airbags 30 include a left-first airbag 1, a left-second airbag 2, and a left-third airbag 3 arranged sequentially away from the seat cushion 600; the plurality of fourth airbags 40 include a right-first airbag 4, a right-second airbag 5, and a right-third airbag 6 arranged sequentially away from the seat cushion 1000; under a first preset condition, the controller 400 is used to control the air source 300 to inflate the left-second airbag 2, left-third airbag 3, right-second airbag 5, and right-third airbag 6; under a second preset condition, the controller 400 is used to control the... The air source 300 inflates the left third air bag 3 and the right third air bag 6; under a third preset condition, the controller 400 controls the air source 300 to inflate the left second air bag 2 and the right second air bag 5; under a fourth preset condition, the controller 400 controls the air source 300 to inflate the left first air bag 1, the left second air bag 2, the right first air bag 4, and the right second air bag 5; under a fifth preset condition, the controller 400 controls the air source 300 to inflate the left first air bag 1 and the right first air bag 4.

[0034] It is worth noting that the first, second, third, fourth, and fifth preset conditions correspond to occupants with different heights and weights. For example, the first preset condition corresponds to tall and heavy occupants, the second preset condition corresponds to tall and medium-weight occupants, the third preset condition corresponds to medium-height and medium-weight occupants, the fourth preset condition corresponds to medium-height and heavy occupants, and the fifth preset condition corresponds to short occupants of any weight.

[0035] It is worth noting that the number of the third airbag 30 or the fourth airbag 40 can be set to more than three, so as to more accurately match passengers of different body types (including height and weight).

[0036] It is worth noting that after analyzing the sensing data collected by the pressure collector 500, the controller 400 classifies the occupants according to their body type (including height and weight), and then matches the first preset condition, the second preset condition, the third preset condition, the fourth preset condition, and the fifth preset condition so that the third airbag 30 and the fourth airbag 40 work together for the occupants, that is, the left first airbag 1, the left second airbag 2, the left third airbag 3, the right first airbag 4, the right second airbag 5, and the right third airbag 6 work together for the occupants.

[0037] It is worth noting that the method of matching the first, second, third, fourth, and fifth preset conditions is not limited to the above discussion. There may be other methods. For example, after the occupant sits on the seat cushion 600, he or she can manually input his or her height and weight data to match the first, second, third, fourth, and fifth preset conditions; or, after the occupant sits on the seat cushion 600, he or she can manually select the first, second, third, fourth, and fifth preset conditions.

[0038] It is worth noting that in some embodiments, please refer to [link / reference]. Figure 3 The first airbag 10 is bent away from the second airbag 20, and the line connecting the plurality of third airbags 30 protrudes towards the central axis L1. Since the plurality of third airbags 30 and the plurality of fourth airbags 40 are symmetrically arranged about the central axis L1, the line connecting the plurality of fourth airbags 40 also protrudes towards the central axis L1. With this arrangement, since the first airbag 10 and the second airbag 20 are positioned in an inverted "V" shape on the seat back 200 of the car seat 1000, the bent first airbag 10 and the bent second airbag 20 have good conformity to the shape of the occupant's two shoulder blades, significantly enhancing the occupant's massage and relaxation experience.

[0039] It is worth noting that in some embodiments, the first airbag 10, which is bent, forms a first bending point 13, and the third airbag 30, located in the middle, is positioned at the first bending point 13; the second airbag 20, which is bent, forms a second bending point 23, and the fourth airbag 40, located in the middle, is positioned at the second bending point 23. This arrangement allows the multiple third airbags 30 and the multiple fourth airbags 40 to better conform to the shape of the occupant's two shoulder blades, thereby providing more precise support and massage to the occupant's back. Furthermore, the inflation time and / or inflation volume of the multiple third airbags 30 and the multiple fourth airbags 40 can be adjusted according to the occupant's specific body shape (including height and weight) to achieve optimal comfort and relaxation.

[0040] It is worth noting that in some embodiments, please refer to [link / reference]. Figure 4The third air bag 30 includes multiple layers of first sub-air bags 301, which are stacked on top of the first air bag 10. One of the first sub-air bags 301 is connected to the air source 300 through the valve body. The fourth air bag 40 includes multiple layers of second sub-air bags 401, which are stacked on top of the second air bag 20. One of the second sub-air bags 401 is connected to the air source 300 through the valve body. This arrangement facilitates control of the inflation height of the third air bag 30 and the fourth air bag 40 by adjusting the inflation time and / or inflation volume.

[0041] It is worth noting that the multiple layers of the first sub-airbags 301 can be interconnected, or they can be mutually sealed; similarly, the multiple layers of the second sub-airbags 401 can be interconnected, or they can be mutually sealed.

[0042] It is worth noting that in some embodiments, the third air port 31 is located in the layer of the multi-layer first sub-air bag 301 close to the first air bag 10, and the fourth air port 41 is located in the layer of the multi-layer second sub-air bag 401 close to the second air bag 20, thereby facilitating the inflation and deflation of the multi-layer first sub-air bag 301 and the multi-layer second sub-air bag 401.

[0043] The air source 300 described above is used to supply gas to the first air bag 10, the second air bag 20, the plurality of third air bags 30, and the plurality of fourth air bags 40 to inflate them, thereby providing support or massage to the occupants. The air source 300 can be any device that can provide gas.

[0044] The pressure sensor 500 described above provides sensing data when an occupant acts on the vehicle seat 1000. Specifically, the pressure sensor 500 is disposed on the seat back 200, and provides back sensing data when the occupant's back acts on the seat back 200. The pressure sensor 500 is also disposed on the seat cushion 600, and provides hip and leg sensing data when the occupant's buttocks and legs act on the seat cushion 600; the pressure sensor 500 also provides lumbar sensing data when the occupant's lower back acts on the seat back 200.

[0045] It is worth noting that the pressure sensor 500 can be any device that can provide sensing data. In some embodiments, the pressure sensor 500 is a pressure sensing pad, and the specific structure of the pressure sensing pad can adopt existing technology. In some embodiments, the pressure sensor 500 can also be multiple pressure sensors disposed on the seat cushion 600 or the car seat 1000, and the specific structure of the pressure sensors can adopt existing technology.

[0046] It is worth noting that in some embodiments, the pressure acquisition device 500 can also be connected to the controller 400, so that the controller 400 can acquire the back sensing data, hip and leg sensing data and waist sensing data, and then perform occupant classification to match the first preset condition, second preset condition, third preset condition, fourth preset condition and fifth preset condition.

[0047] The valve body described above can be any device that controls the on / off flow of gas supplied by a gas source. For example, it can be a direct-acting solenoid valve or a pilot-operated solenoid valve.

[0048] The controller 400 is a control center and has a first function: controlling the air source 300 to inflate the first air bag 10, the plurality of third air bags 30, the second air bag 20, and the plurality of fourth air bags 40 respectively through the valve body. The first function also includes controlling the deflation of the first air bag 10, the plurality of third air bags 30, the second air bag 20, and the plurality of fourth air bags 40. The controller 400 also has a second function, which is to control the air source 300 to inflate the left second air bag 2, left third air bag 3, right second air bag 5, and right third air bag 6 under a first preset condition; to control the air source 300 to inflate the left third air bag 3 and right third air bag 6 under a second preset condition; to control the air source 300 to inflate the left second air bag 2 and right second air bag 5 under a third preset condition; to control the air source 300 to inflate the left first air bag 1, left second air bag 2, right first air bag 4, and right second air bag 5 under a fourth preset condition; and to control the air source 300 to inflate the left first air bag 1 and right first air bag 4 under a fifth preset condition.

[0049] It is worth noting that the program steps involved in the first and second functions of the controller 400 are existing program steps, and the controller 400 with the first and second functions also uses existing processors, such as Intel's i3 processor, AMD Ryzen processor, etc.

[0050] In this embodiment of the application, the car seat 1000 provided by this embodiment includes a seat cushion 600, a seat back 200, an airbag assembly 100, a valve body, and an air source 300, and the car seat 1000 has a central axis L1; the airbag assembly 100 is disposed on the seat back 200; the airbag assembly 100 includes a first airbag 10, a second airbag 20, a plurality of third airbags 30, and a plurality of fourth airbags 40; the first airbag 10, the second airbag 20, the plurality of third airbags 30, and the plurality of fourth airbags 40 are all connected to the air source 300 through the valve body; the plurality of third airbags 30 are fixed to the first airbag 10, the plurality of fourth airbags 40 are fixed to the second airbag 20, and the plurality of fourth airbags 40 are fixed to the first airbag 10. The three airbags 30 and the plurality of fourth airbags 40 are symmetrically arranged about the central axis L1. Among the plurality of third airbags 30, the farther the third airbag 30 is from the seat cushion 600, the greater its distance from the central axis L1. This is equivalent to the first airbag 10 and the second airbag 20 in the airbag assembly 100 being arranged in an inverted "V" shape on the seat back 200 of the car seat 1000. Due to the arrangement of the plurality of third airbags 30 and the plurality of fourth airbags 40, different third airbags 30 and fourth airbags 40 can be combined for inflation, thereby acting on the occupant. This allows for precise massage of the back of occupants with different heights and sizes. By combining the third airbags 30 and fourth airbags 40 for inflation and deflation, precise massage of the back of occupants with different weights can also be provided, resulting in a good user experience.

[0051] It should be noted that while preferred embodiments of this application are provided in the specification and accompanying drawings, this application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this application; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this application. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this application's specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A car seat, characterized in that, include: The vehicle seat includes a seat cushion, a seat back, an airbag assembly, a valve body, and an air source, and the vehicle seat has a central axis. The airbag assembly is disposed on the seat back; The airbag assembly includes a first airbag, a second airbag, multiple third airbags, and multiple fourth airbags; The first air bag, the second air bag, the plurality of third air bags, and the plurality of fourth air bags are all connected to the air source through the valve body; The plurality of third airbags are fixed to the first airbag, and the plurality of fourth airbags are fixed to the second airbag. The plurality of third airbags and the plurality of fourth airbags are arranged symmetrically about the central axis. Among the plurality of third airbags, the third airbag farther away from the seat cushion is also farther away from the central axis.

2. The car seat according to claim 1, characterized in that, The number of the third air bags is three, and the number of the fourth air bags is three.

3. The car seat according to claim 2, characterized in that, The first air bag is bent away from the second air bag, and the line connecting the plurality of third air bags protrudes towards the central axis.

4. The car seat according to claim 3, characterized in that, The first air bag, which is bent, forms the first bending point, and the third air bag, which is located in the middle, is disposed at the first bending point; The second air bag, which is bent, forms a second bend point, and the fourth air bag, located in the middle, is positioned at the second bend point.

5. The car seat according to claim 1, characterized in that, The third air bag includes multiple layers of first sub-air bags, one of which is connected to the air source through the valve body; The fourth air bag includes multiple layers of second sub-air bags, one of which is connected to the air source through the valve body.

6. The car seat according to claim 1, characterized in that, The car seat also includes a controller connected to the valve body. The controller is used to control the air source through the valve body to inflate the first air bag, the plurality of third air bags, the second air bag, and the plurality of fourth air bags respectively.

7. The car seat according to claim 6, characterized in that, The plurality of third airbags include a first airbag on the left, a second airbag on the left, and a third airbag on the left, located sequentially away from the seat cushion; The plurality of fourth airbags include a right first airbag, a right second airbag, and a right third airbag located sequentially away from the seat cushion; Under a first preset condition, the controller is used to control the air source to inflate the second left air bag, the third left air bag, the second right air bag, and the third right air bag; Under the second preset condition, the controller is used to control the air source to inflate the left three air bags and the right three air bags; Under the third preset condition, the controller is used to control the air source to inflate the left two air bags and the right two air bags; Under the fourth preset condition, the controller is used to control the air source to inflate the left first air bag, the left second air bag, the right first air bag, and the right second air bag; Under the fifth preset condition, the controller is used to control the air source to inflate the left and right air bags.

8. The car seat according to claim 6, characterized in that, The car seat also includes a pressure sensor disposed on the seat back, which provides back sensing data when the occupant's back is pressed against the seat back.

9. The automobile seat according to claim 8, characterized in that, The pressure sensor includes a pressure sensing pad.

10. A means of transportation, characterized in that, Including the car seat as described in any one of claims 1-9.