A remote airbag and a car seat

Abstract

This application provides a remote airbag and a car seat. The remote airbag includes: a main cavity, a secondary cavity, and a gas generating device; the main cavity is fixedly installed on the seat, and the outlet of the gas generating device is connected to the main cavity for inflating the main cavity; the secondary cavity is fixedly connected to the occupant side of the main cavity via a connecting part, the connecting part having a first opening connecting the main cavity and the secondary cavity; the secondary cavity is divided into a first secondary cavity and a second secondary cavity by a partition, the first secondary cavity being located between the main cavity and the second secondary cavity, the partition having an air hole connecting the first secondary cavity and the second secondary cavity; after inflation, both the first and second secondary cavities protrude towards the occupant position, so that the second secondary cavity supports the occupant's head or neck. This type of remote airbag can absorb force during an impact, thereby improving the protection of the occupant.

Description

Technical Field

[0001] This application relates to the field of safety protection device technology, specifically to a remote airbag and a car seat. Background Technology

[0002] Cars have become a common means of transportation in our lives. To protect the safety of passengers, cars are equipped with safety devices such as seat belts and airbags. Among them, airbags can deploy in the event of an accident to prevent the human body from impacting the vehicle structure, thereby protecting personal safety.

[0003] Distant airbags, as a new type of safety airbag, are gradually being used more widely. They generally consist of two inflatable chambers of different sizes. During inflation, the larger chamber inflates first and bulges out from the car seat, while the smaller chamber inflates later and bulges out from the larger chamber. This restricts the space for movement of the occupant's head and reduces the risk of head injury.

[0004] However, in existing distal airbags, the small cavity used to protect the occupant's head or neck is directly connected to the large cavity. Furthermore, to ensure the small cavity can effectively contact the occupant's head or neck after inflation, both the small and large cavities need to be quite large. When the small cavity absorbs the impact force on the occupant's head or neck, its impact-absorbing effect is poor, and the resulting reaction force can easily cause injury to the occupant's head or neck, resulting in insufficient protection. Therefore, improving the protective effectiveness of distal airbags has become a technical problem that needs to be solved. Summary of the Invention

[0005] This application provides a remote airbag and a car seat to address the problem of insufficient protection provided by existing remote airbags.

[0006] This application provides a remote airbag, including: a main cavity, a secondary cavity, and a gas generating device;

[0007] The main cavity is fixedly installed on the seat, and the outlet of the gas generator is connected to the main cavity for inflating the main cavity; the auxiliary cavity is fixedly connected to the occupant side of the main cavity through a connecting part, and the connecting part is provided with a first opening connecting the main cavity and the auxiliary cavity;

[0008] The secondary cavity is divided into a first secondary cavity and a second secondary cavity by a partition plate. The first secondary cavity is located between the main cavity and the second secondary cavity. The partition plate is provided with air holes to connect the first secondary cavity and the second secondary cavity. After inflation, both the first secondary cavity and the second secondary cavity bulge towards the occupant's position so that the second secondary cavity can support the occupant's head or neck.

[0009] Optionally, the first opening is configured as a one-way channel that allows the inflation airflow to flow from the main cavity to the secondary cavity.

[0010] Optionally, the first opening is configured as a one-way channel that allows the inflation airflow to flow from the main cavity to the secondary cavity. Specifically, a baffle is provided at the first opening, which can movably cover the first opening. When the gas generating device inflates the main cavity, the gas in the main cavity pushes open the baffle and enters the secondary cavity. When the inflated secondary cavity is squeezed, the gas in the secondary cavity acts on the baffle, causing the baffle to close the first opening.

[0011] Optionally, the baffle includes a first baffle and a second baffle; when the first baffle and the second baffle cover the first opening, the first baffle and the second baffle have overlapping portions.

[0012] Optionally, after the first secondary cavity is inflated, the cross-sectional area of ​​the first secondary cavity gradually decreases in the direction extending from the main cavity to the first secondary cavity.

[0013] Optionally, the pores on the separator can be set to one or more.

[0014] Optionally, during inflation, the bulge direction of the secondary cavity is perpendicular to the bulge direction of the main cavity.

[0015] Optionally, a gas guiding structure is provided in the main cavity, which includes a first channel and a second channel; the outlets of the first channel and the second channel are spaced at a preset distance, and the inlets of the first channel and the second channel are respectively connected to the outlet of the gas generating device.

[0016] Optionally, the inflated main cavity may partially overlap with the central tunnel of the vehicle.

[0017] This application embodiment also provides a car seat, wherein a distal airbag is provided on the inner side of the seat frame; the distal airbag includes: a main cavity, a secondary cavity, and a gas generating device;

[0018] The main cavity is fixedly installed on the seat, and the outlet of the gas generator is connected to the main cavity for inflating the main cavity; the auxiliary cavity is fixedly connected to the occupant side of the main cavity through a connecting part, and the connecting part is provided with a first opening connecting the main cavity and the auxiliary cavity;

[0019] The secondary cavity is divided into a first secondary cavity and a second secondary cavity by a partition plate. The first secondary cavity is located between the main cavity and the second secondary cavity. The partition plate is provided with air holes to connect the first secondary cavity and the second secondary cavity. After inflation, both the first secondary cavity and the second secondary cavity bulge towards the occupant's position so that the second secondary cavity can support the occupant's head or neck.

[0020] Compared with the prior art, this application has the following advantages:

[0021] This application provides a remote airbag, including: a main cavity, a secondary cavity, and a gas generating device; the main cavity is fixedly installed on the seat, and the outlet of the gas generating device is connected to the main cavity for inflating the main cavity; the secondary cavity is fixedly connected to the occupant side of the main cavity through a connecting part, and the connecting part is provided with an opening connecting the main cavity and the secondary cavity; the secondary cavity is divided into a first secondary cavity and a second secondary cavity by a partition, the first secondary cavity is located between the main cavity and the second secondary cavity, and the partition is provided with an air hole to connect the first secondary cavity and the second secondary cavity; after inflation, both the first secondary cavity and the second secondary cavity protrude towards the occupant position so that the second secondary cavity supports the occupant's head or neck.

[0022] This type of distal airbag has a main cavity and a secondary cavity that are connected. The secondary cavity is divided into a first secondary cavity and a second secondary cavity by a partition. Both the first and second secondary cavities bulge towards the occupant after inflation, giving the secondary cavity an elongated shape that bulges towards the occupant, thus reducing its overall volume. Furthermore, the second secondary cavity is designed to support the occupant's head or neck. In the event of an accident, because the second secondary cavity is separated from the main cavity by the first secondary cavity, when the second secondary cavity bears the impact of the occupant's head or neck, the force is first transferred to the first secondary cavity. The partition between the second and first secondary cavities bends, thus dissipating some of the impact force. The bending and recovery process further dissipates the force, and the partial deformation of the first secondary cavity during force transmission also contributes to force dissipation. This reduces the magnitude of the resulting reaction force, lowers the risk of head or neck injury to the occupant, and enhances the protective effectiveness of the distal airbag.

[0023] In the preferred embodiment of this application, the first opening is configured as a one-way channel allowing the inflation airflow to flow from the main cavity to the secondary cavity, thereby keeping the air pressure in the secondary cavity constant after inflation. When an accident occurs, since the gas in the secondary cavity cannot flow back to the main cavity, when the secondary cavity is subjected to the impact of the occupant's head or neck, the gas in the second and first secondary cavities will only change its distribution within the second and first secondary cavities. The bending and deformation recovery processes of the second and first secondary cavities will be faster and the recovery effect will be more significant, thereby improving the stress-relief effect of the secondary cavity and thus improving the protection effect for the human body. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a distal airbag provided in an embodiment of this application.

[0025] Figure 2 This is a partial cross-sectional view of a distal airbag provided in an embodiment of this application.

[0026] Figure 3 This is a cross-sectional view of the connection between the main cavity and the auxiliary cavity of a distal airbag provided in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of a structure provided in an embodiment of this application, in which a separator divides a secondary cavity into a first secondary cavity and a second secondary cavity;

[0028] Figure 5 This is a schematic diagram of the structure of a connecting part in an embodiment of this application, in which the first and second baffles are pushed apart by gas.

[0029] Figure label:

[0030] Main cavity 10; secondary cavity 20; first secondary cavity 21; second secondary cavity 22; partition plate 23; vent 231;

[0031] Gas generator 30; Seat 40;

[0032] Connecting part 50; First opening 51; Baffle 52; First baffle 521; Second baffle 522;

[0033] Air guide structure 60; central channel 70. Detailed Implementation

[0034] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0035] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] Cars have become a common means of transportation in our lives. To protect the safety of passengers, cars are equipped with safety devices such as seat belts and airbags. Among them, airbags can deploy in the event of an accident to prevent the human body from impacting the vehicle structure, thereby protecting personal safety.

[0039] Distant airbags, as a new type of safety airbag, are gradually being used more widely. They generally consist of two inflatable chambers of different sizes. During inflation, the larger chamber inflates first and bulges out from the car seat, while the smaller chamber inflates later and bulges out from the larger chamber. This restricts the space for movement of the occupant's head and reduces the risk of head injury.

[0040] However, in existing distal airbags, the small cavity used to protect the occupant's head or neck is directly connected to the large cavity. Furthermore, to ensure the small cavity can effectively contact the occupant's head or neck after inflation, both the small and large cavities need to be quite large. When the small cavity absorbs the impact force on the occupant's head or neck, its impact-absorbing effect is poor, and the resulting reaction force can easily cause injury to the occupant's head or neck, resulting in insufficient protection. Therefore, improving the protective effectiveness of distal airbags has become a technical problem that needs to be solved.

[0041] To address the issue of insufficient protection provided by existing distal airbags, this application provides a feasible distal airbag. In this distal airbag, the main cavity and the secondary cavity are connected. The secondary cavity is divided into a first secondary cavity and a second secondary cavity by a partition. After inflation, both the first and second secondary cavities bulge towards the occupant, making the secondary cavity as a whole present a long strip shape bulging towards the occupant, thereby reducing the overall volume of the secondary cavity. Furthermore, the second sub-cavity is designed to support the occupant's head or neck. In the event of an accident, because the second sub-cavity is separated from the main cavity by the first sub-cavity, when the second sub-cavity is impacted by the occupant's head or neck, the force borne by the second sub-cavity will first be transferred to the first sub-cavity. The partition between the second and first sub-cavities will bend, thereby dissipating part of the impact force. The bending and recovery process will dissipate the force again. In addition, the first sub-cavity will undergo partial deformation during the force transmission process, which will also have a force-dissipating effect. This will reduce the magnitude of the reaction force generated, reduce the risk of head or neck injury to the occupant, and improve the protection of the distal airbag.

[0042] This type of distal airbag is specifically as follows: Figure 1 , Figure 2 and Figure 3 As shown, Figure 1 This is a schematic diagram of the overall structure of a distal airbag provided in an embodiment of this application. Figure 2 This is a partial cross-sectional view of a distal airbag provided in an embodiment of this application. Figure 3 This is a cross-sectional view of the connection between the main cavity and the auxiliary cavity of a distal airbag provided in an embodiment of this application. Figure 1 As shown, this type of distal airbag includes: a main cavity 10, a secondary cavity 20, and a gas generating device 30.

[0043] The main cavity 10 is fixedly installed on the seat 40. The outlet of the gas generator 30 is connected to the main cavity 10 for inflating the main cavity 10. The secondary cavity 20 is fixedly connected to the occupant side of the main cavity 10 through a connecting part 50. The connecting part 50 is provided with a first opening 51 connecting the main cavity 10 and the secondary cavity 20. The secondary cavity 20 is divided into a first secondary cavity 21 and a second secondary cavity 22 by a partition 23. The first secondary cavity 21 is located between the main cavity 10 and the second secondary cavity 22. The partition 23 is provided with an air hole 231 to connect the first secondary cavity 21 and the second secondary cavity 22. After inflation, both the first secondary cavity 21 and the second secondary cavity 22 protrude towards the occupant position so that the second secondary cavity 22 supports the occupant's head or neck.

[0044] In this remote airbag, the gas generating device 30 is a structure that generates gas when an accident occurs. The outlet of the gas generating device 30 is connected to the main cavity 10, thereby filling the main cavity 10 with the generated gas. Both the gas generating device 30 and the main cavity 10 are fixedly installed on the car seat 40, preferably on the inner side of the seat frame of the seat 40, so as to inflate in time when an accident occurs and be close to the occupant protrusion, thereby quickly providing protection for the occupant.

[0045] The secondary cavity 20 is another cavity connected to the main cavity 10. The secondary cavity 20 is connected to the main cavity 10 through a connecting part 50 and communicates with it through a first opening 51 on the connecting part 50. Specifically, the secondary cavity 20 is fixed to the occupant side of the main cavity 10 through the connecting part 50. The occupant side refers to the side adjacent to the occupant.

[0046] The connecting part 50 is a component that connects the secondary cavity 20 to the main cavity 10. In specific embodiments, the connecting part 50 can be an independent component that is fixedly connected to both the main cavity 10 and the secondary cavity 20, or it can be an integral structure with either the main cavity 10 or the secondary cavity 20. There are many ways to fix the connecting part 50 to the main cavity 10 or the secondary cavity 20, such as stitching, bonding, or melting, and no limitation is made here.

[0047] The secondary cavity 20 is divided into a first secondary cavity 21 and a second secondary cavity 22 by a partition 23. The partition 23 has air holes 231 to connect the first secondary cavity 21 and the second secondary cavity 22. The connection relationship between the main cavity 10, the first secondary cavity 21, and the second secondary cavity 22 is as follows: the main cavity 10 is fixedly connected to the car seat 40, the first secondary cavity 21 is fixedly connected to the passenger side of the main cavity 10, and the second secondary cavity 22 is fixedly connected to the passenger side of the first secondary cavity 21. The partition 23 can have one or more air holes 231, and the number, size, and shape of the air holes 231 can be selected and defined according to actual needs, without limitation.

[0048] The main cavity 10 and the first auxiliary cavity 21 are connected by the first opening 51 of the connecting part 50, and the first auxiliary cavity 21 and the second auxiliary cavity 22 are connected by the air hole 231 on the partition plate 23. When the gas generating device 30 inflates the main cavity 10, the gas in the main cavity 10 will enter the first auxiliary cavity 21 through the first opening 51 of the connecting part 50, and then enter the second auxiliary cavity 22 through the air hole 231 on the partition plate 23. The inflation process is the airbag deployment process. In this process, the main cavity 10 is inflated first and protrudes from the inside of the seat 40. The first auxiliary cavity 21 protrudes from the occupant side of the main cavity 10 toward the occupant position, that is, it extends toward the occupant. The second auxiliary cavity 22 protrudes from the occupant side of the first auxiliary cavity 21 toward the occupant position and finally reaches the position to support the occupant's head or neck to protect the passenger.

[0049] The specific structure of the separator 23 in the sub-cavity 20 is as follows: Figure 4 As shown, Figure 4 This is a schematic diagram of a partition plate that divides a sub-cavity into a first sub-cavity and a second sub-cavity, according to an embodiment of this application. The partition plate 23 is fixedly connected to the sub-cavity 20, dividing the sub-cavity 20 into a first sub-cavity 21 and a second sub-cavity 22. The partition plate 23 can be fixed by sewing it into the sub-cavity 20 or by other fixing methods.

[0050] In specific embodiments, the material, structure, and shape of the separator 23 can be further customized. For example, the separator 23 can be made of the same material as the sub-cavity 20, or it can be made of a different material to make the separator 23 stronger than the sub-cavity 20. The materials used for the separator 23 specifically include PA66, PET, etc., which can be selected according to actual needs, and the performance of the separator 23 can be further enhanced by coating or other methods. Furthermore, the separator 23 can be set to different shapes such as elliptical or circular. No specific limitations are imposed here.

[0051] It is important to understand that in the event of an accident, the gas generator 30 will be rapidly activated to generate gas. The generated gas will quickly fill the main chamber 10, the first auxiliary chamber 21, and the second auxiliary chamber 22, forming a buffer pad capable of absorbing the impact of the user. During this process, the inflation speed is set within a preset threshold range to ensure that the second auxiliary chamber 22 can be quickly inflated to the required level, thus ensuring the safety of the occupants.

[0052] After inflation, the main cavity 10, the first secondary cavity 21, and the second secondary cavity 22 form three cavities. Since the first secondary cavity 21 and the second secondary cavity 22 are formed by separating the secondary cavity 20 with a partition 23, and because the partition 23 has a fixed size and does not deform, it holds the main body of the secondary cavity 20 during inflation, ensuring that the size at the junction of the first secondary cavity 21 and the second secondary cavity 22 remains within a preset value. The depth of the first secondary cavity 21 and the second secondary cavity 22 is also preset, thus limiting the overall size and shape of the secondary cavity 20. Therefore, when the secondary cavity 20 is filled with gas, the partition 23 restricts the main body of the secondary cavity 20 within a preset size range, making the secondary cavity 20 elongated rather than spherical, thereby reducing its volume.

[0053] Furthermore, the main cavity 10 and the first auxiliary cavity 21 are connected by a connecting part 50, and the first auxiliary cavity 21 and the second auxiliary cavity 22 are connected by a partition plate 23. After inflation, the main cavity 10, the first auxiliary cavity 21, and the second auxiliary cavity 22 form a three-section structure connected in sequence, and the first auxiliary cavity 21 and the second auxiliary cavity 22 are equivalent to cantilever structures set on the main cavity 10. When the occupant's head or neck impacts the second auxiliary cavity 22, the impact force borne by the second auxiliary cavity 22 will first be transmitted to the first auxiliary cavity 21, and then from the first auxiliary cavity 21 to the main cavity 10. During the force transmission process, the partition plate 23 between the first auxiliary cavity 21 and the second auxiliary cavity 22 will bend, and the first auxiliary cavity 21 and the second auxiliary cavity 22 will undergo partial deformation, thereby generating a force-dissipating effect. During the bending and deformation recovery process, a force-relieving effect is generated, which makes the resulting reaction force much smaller than the impact force, reducing the risk of head or neck injury to the occupant and improving the protection of the distal airbag.

[0054] by Figure 1As shown in the example, the first auxiliary cavity 21 and the second auxiliary cavity 22 are located on the left side of the human body and extend sequentially towards the head. When the human body falls to the left, the head will shift downwards and to the left, impacting the second auxiliary cavity 22. The end of the second auxiliary cavity 22 will then shift downwards and to the left with the impact, and the impact force borne by the second auxiliary cavity 22 will be transmitted to the first auxiliary cavity 21. During this process, the first auxiliary cavity 21 and the second auxiliary cavity 22 form relative motion, and bending will occur at the partition 23 between the first auxiliary cavity 21 and the second auxiliary cavity 22. The bending process will consume part of the impact force. At the same time, the impact of the human body will compress the second auxiliary cavity 22, causing changes in the gas distribution inside the first auxiliary cavity 21 and the second auxiliary cavity 22, resulting in partial deformation of the first auxiliary cavity 21 and the second auxiliary cavity 22, which will also consume part of the impact force. Furthermore, since the total air pressure in each cavity remains constant, when the second sub-cavity 22 is subjected to an impact from the human body, the gas in each cavity will always provide the first sub-cavity 21 and the second sub-cavity 22 with restoring force to return to the state before the impact, so as to perform bending recovery and deformation recovery. This process will also further consume some of the impact force, so that the generated reaction force is much smaller than the impact force, reducing the risk of head or neck injury to the occupant and improving the protection of the distal airbag.

[0055] In this embodiment, the relevant structures of the main cavity 10, the first auxiliary cavity 21, and the second auxiliary cavity 22 can be further configured to improve the protective effect of the distal airbag.

[0056] In one feasible implementation, the first opening 51 is configured as a one-way channel allowing the inflation airflow to flow from the main cavity 10 to the secondary cavity 20. In this implementation, the first opening 51 is a one-way channel, ensuring that gas can only flow from the main cavity 10 into the secondary cavity 20 and cannot flow back from the secondary cavity 20 to the main cavity 10. When an accident occurs, because the gas in the secondary cavity 20 cannot flow back to the main cavity 10, when the second secondary cavity 22 is subjected to an impact to the occupant's head or neck, the gas in the second secondary cavity 22 and the first secondary cavity 21 will only change its distribution within the second secondary cavity 22 and the first secondary cavity 21. The bending and deformation recovery processes of the second secondary cavity 22 and the first secondary cavity 21 will be faster and the recovery effect more significant, thereby improving the stress-relief effect of the secondary cavity 20 and thus enhancing the protection of the human body.

[0057] There are many ways to configure the first opening 51 as a one-way channel. For example, a one-way valve can be installed at the first opening 51, and the one-way valve can be configured as a flexible structure, thereby blocking the first opening 51 when it is not inflated and opening the first opening 51 when it is inflated. Alternatively, a movable baffle, piston, or other structure can be installed at the first opening 51 to form a structure similar to a one-way valve, and no limitation is made here.

[0058] Taking the installation of a movable baffle at the first opening 51 as an example, a feasible implementation is as follows: Figure 3 As shown, a baffle 52 is provided at the first opening 51 of the connecting part 50, and the baffle 52 can movably cover the first opening 51; when the gas generating device 30 inflates the main cavity 10, the gas in the main cavity 10 pushes the baffle 52 and enters the secondary cavity 20; when the inflated secondary cavity 20 is squeezed, the gas in the secondary cavity 20 acts on the baffle 52 and causes the baffle 52 to close the first opening 51.

[0059] In this embodiment, the baffle 52 acts as a one-way valve controlling gas flow. When the gas generator 30 fills the main chamber 10 with gas, the gas can push aside the baffle 52, which blocks the first opening 51 of the connecting portion 50, and enter the secondary chamber 20. After filling is complete, the baffle 52 covers the first opening 51 again, and when the pressure of the gas in the secondary chamber 20 acts on the baffle 52, it only strengthens the blocking effect of the baffle 52 on the first opening 51, and cannot push the baffle 52 open.

[0060] This implementation allows the main cavity 10 and the secondary cavity 20 to be independent cavities after inflation. When the secondary cavity 22 is subjected to an impact to the passenger's head or neck, the gas in the secondary cavity 20 will not flow back to the main cavity 10, thereby ensuring that the air pressure in the secondary cavity 20 remains unchanged, and thus ensuring the protective effect of the secondary cavity 20 on the human body.

[0061] In a specific implementation, the baffle 52 can be sewn onto either the passenger side of the connecting portion 50 or onto the first sub-cavity 21; there is no limitation on this. Furthermore, the baffle 52 can be a single piece or multiple pieces.

[0062] Taking multiple baffles 52 as an example, a feasible implementation method can be as follows: Figure 3 and Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of a connecting portion in an embodiment of this application when the first and second baffles are pushed apart by gas. Specifically, the baffle 52 includes a first baffle 521 and a second baffle 522; when the first baffle 521 and the second baffle 522 cover the first opening 51, as shown... Figure 3 As shown, the first baffle 521 and the second baffle 522 have overlapping portions. During inflation... Figure 5As shown, the gas pushes aside the obstruction of the first opening 51 by the first baffle 521 and the second baffle 522. After inflation is complete, the first baffle 521 and the second baffle 522 return to their overlapping state and block the first opening 51. When the gas pressure in the secondary cavity 20 acts on the first baffle 521 and the second baffle 522, it only strengthens the obstruction effect of the first baffle 521 and the second baffle 522 on the first opening 51, and cannot push aside the first baffle 521 and the second baffle 522 to flow back into the main cavity 10. Furthermore, since the first baffle 521 and the second baffle 522 have overlapping parts, their effect in preventing backflow is better.

[0063] In this embodiment, to improve the force-bearing effect of the first auxiliary cavity 21 and the second auxiliary cavity 22, the shape of the first auxiliary cavity 21 can be configured so that its volume is larger than that of the second auxiliary cavity 22. One feasible implementation is as follows: after the first auxiliary cavity 21 is inflated, its cross-sectional area gradually decreases in the direction extending from the main cavity 10 towards the first auxiliary cavity 21. Of course, the first auxiliary cavity 21 can also be configured into other shapes such as an ellipse; no limitation is made here.

[0064] To improve the force distribution and inflation effect between the main cavity 10 and the secondary cavity 20, the shapes of the main cavity 10 and the secondary cavity 20 can be further modified so that, during inflation, the protrusion direction of the secondary cavity 20 is perpendicular to the protrusion direction of the main cavity 10. Of course, in other configurations, the protrusion direction of the secondary cavity 20 can also be at a preset angle to the protrusion direction of the main cavity 10; this is not a limitation here.

[0065] In addition, in order to quickly fill each cavity with the gas generated by the gas generating device 30, a gas guiding structure 60 can be provided to guide the gas to different positions for filling, thereby accelerating the filling rate.

[0066] One feasible implementation method is that a gas guiding structure 60 is provided in the main cavity 10. The gas guiding structure 60 includes a first channel and a second channel. The outlets of the first channel and the second channel are separated by a preset distance, and the inlets of the first channel and the second channel are respectively connected to the outlet of the gas generating device 30.

[0067] The first and second channels are used to guide gas to different locations. For example, the first channel can guide gas to the upper half of the main cavity 10, while the second channel guides gas to the lower half of the main cavity 10. Alternatively, the first channel can guide gas to the vicinity of the first opening 51 near the connecting portion 50, while the second channel guides gas to other locations in the main cavity 10. There are many specific ways to configure the first and second channels, which will not be elaborated upon here.

[0068] In addition, it should be clear that in this embodiment, the remote airbag not only prevents the occupant's head from colliding with the vehicle structure, but also prevents collisions between passengers, such as preventing the head of the driver's occupant from colliding with the head of the front passenger.

[0069] Therefore, in one embodiment, the remote airbag provided in this embodiment can be placed between the driver's seat and the passenger seat, and the inflated main cavity 10 can partially overlap with the central tunnel 70 of the vehicle. This can both support the main cavity from the central tunnel 70 of the car and prevent the inflated main cavity from causing excessive compression to the human body.

[0070] In the distal airbag provided in this embodiment, the main cavity 10 and the secondary cavity 20 are connected. The secondary cavity 20 is divided into a first secondary cavity 21 and a second secondary cavity 22 by a partition 23. After inflation, both the first secondary cavity 21 and the second secondary cavity 22 bulge towards the occupant, making the secondary cavity 20 present as an elongated shape bulging towards the occupant, thereby reducing the overall volume of the secondary cavity 20. Furthermore, the second auxiliary cavity 22 is a structure designed to support the occupant's head or neck. When an accident occurs, since the second auxiliary cavity 22 is separated from the main cavity 10 by the first auxiliary cavity 21, when the second auxiliary cavity 22 bears the impact of the occupant's head or neck, the force borne by the second auxiliary cavity 22 will first be transferred to the first auxiliary cavity 21. The partition 23 between the second auxiliary cavity 22 and the first auxiliary cavity 21 will bend, thereby dissipating part of the impact force. The bending and recovery process will dissipate the force again. In addition, the first auxiliary cavity 21 will undergo partial deformation during the force transmission process, which will also produce a force-dissipating effect, thereby reducing the magnitude of the generated reaction force, reducing the risk of head or neck injury to the occupant, and improving the protection of the distal airbag.

[0071] The first embodiment described above provides a detailed description of the distal airbag. Corresponding to the first embodiment, the second embodiment of this application provides a car seat 40.

[0072] Specifically, a remote airbag is provided inside the seat frame of the car seat; the remote airbag includes: a main cavity 10, a secondary cavity 20 and a gas generating device 30;

[0073] The main cavity 10 is fixedly installed on the seat 40. The gas outlet of the gas generator 30 is connected to the main cavity 10 for inflating the main cavity 10. The auxiliary cavity 20 is fixedly connected to the passenger side of the main cavity 10 through the connecting part 50. The connecting part 50 is provided with a first opening 51 that connects the main cavity 10 and the auxiliary cavity 20.

[0074] The secondary cavity 20 is divided into a first secondary cavity 21 and a second secondary cavity 22 by a partition 23. The first secondary cavity 21 is located between the main cavity 10 and the second secondary cavity 22. The partition 23 is provided with an air hole 231 to connect the first secondary cavity 21 and the second secondary cavity 22. After inflation, both the first secondary cavity 21 and the second secondary cavity 22 protrude towards the occupant's position so that the second secondary cavity 22 can support the occupant's head or neck.

[0075] The car seat 40 of this embodiment is provided with any feasible remote airbag provided in the first embodiment. For details, please refer to the relevant description of the first embodiment, which will not be repeated here.

[0076] The car seat 40 provided in this embodiment has a distal airbag, and the main cavity 10 and the secondary cavity 20 of the distal airbag are connected. The secondary cavity 20 is divided into a first secondary cavity 21 and a second secondary cavity 22 by a partition 23. After inflation, both the first secondary cavity 21 and the second secondary cavity 22 bulge towards the occupant position, so that the secondary cavity 20 as a whole presents a long strip shape bulging towards the occupant, thereby reducing the overall volume of the secondary cavity 20. Furthermore, the second auxiliary cavity 22 is a structure designed to support the head or neck of the occupant. When an accident occurs, since the second auxiliary cavity 22 is separated from the main cavity 10 by the first auxiliary cavity 21, when the second auxiliary cavity 22 bears the impact of the occupant's head or neck, the force borne by the second auxiliary cavity 22 will first be transferred to the first auxiliary cavity 21. The partition 23 between the second auxiliary cavity 22 and the first auxiliary cavity 21 will bend, thereby dissipating part of the impact force. The bending and recovery process will dissipate the force again. In addition, the first auxiliary cavity 21 will undergo partial deformation during the force transmission process, which will also produce a force-dissipating effect, thereby reducing the magnitude of the generated reaction force, reducing the risk of head or neck injury to the occupant, and improving the protection level.

[0077] It should be noted that although several structures, components, or units for implementing the relevant functions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the specific embodiments of this application, the features and functions of two or more structures, components, or units described above can be embodied in one structure, component, or unit. Conversely, the features and functions of one structure, component, or unit described above can be further divided and embodied by multiple components, structures, or units.

[0078] Furthermore, although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.

[0079] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

1. A distal airbag, characterized in that, include: Main chamber, auxiliary chamber, and gas generating device; The main cavity is fixedly installed on the seat, and the gas outlet of the gas generator is connected to the main cavity for inflating the main cavity; the auxiliary cavity is fixedly connected to the occupant side of the main cavity through a connecting part, and the connecting part is provided with a first opening connecting the main cavity and the auxiliary cavity; The first opening is configured as a one-way channel allowing airflow from the main cavity to the secondary cavity; a partition is fixed to the secondary cavity and divides the secondary cavity into a first secondary cavity and a second secondary cavity. The first secondary cavity is located between the main cavity and the second secondary cavity. The partition is provided with air holes to connect the first secondary cavity and the second secondary cavity. After inflation, both the first secondary cavity and the second secondary cavity bulge towards the occupant's position. The second secondary cavity supports the occupant's head or neck, so that the force borne by the second secondary cavity is first transferred to the first secondary cavity, and then the first secondary cavity transfers the force borne by it to the main cavity. The partition is bent, and the first secondary cavity and the second secondary cavity are partially deformed, thereby absorbing part of the impact force. The first auxiliary cavity is fixedly connected to the occupant side of the main cavity, and the second auxiliary cavity is fixedly connected to the occupant side of the first auxiliary cavity. The occupant side of the main cavity refers to the side adjacent to the occupant, and the occupant side of the first auxiliary cavity refers to the side adjacent to the occupant. During inflation, the main cavity inflates first and bulges out from the inside of the seat. The first auxiliary cavity bulges out from the occupant side of the main cavity toward the occupant position, and the second auxiliary cavity bulges out from the occupant side of the first auxiliary cavity toward the occupant position. The partition pulls the main body of the auxiliary cavity in place during inflation. The protrusion direction of the sub-cavity is perpendicular to the protrusion direction of the main cavity, and the sub-cavity is generally elongated and protruding towards the occupants. After the first sub-cavity is inflated, the cross-sectional area of ​​the first sub-cavity gradually decreases in the direction extending from the main cavity to the first sub-cavity, so that the volume of the first sub-cavity is greater than the volume of the second sub-cavity. Moreover, after the main cavity, the first sub-cavity, and the second sub-cavity are inflated, they form a three-section structure connected in sequence, and the first sub-cavity and the second sub-cavity are connected to the main cavity in the form of a cantilever structure.

2. The distal airbag according to claim 1, characterized in that, The first opening is configured as a one-way channel allowing airflow from the main cavity to the secondary cavity. Specifically, a baffle is provided at the first opening, which can movably cover the first opening. When the gas generating device inflates the main cavity, the gas in the main cavity pushes open the baffle and enters the secondary cavity. When the inflated secondary cavity is compressed, the gas in the secondary cavity acts on the baffle, causing the baffle to close the first opening.

3. The distal airbag according to claim 2, characterized in that, The baffle includes a first baffle and a second baffle; when the first baffle and the second baffle cover the first opening, the first baffle and the second baffle have overlapping portions.

4. The distal airbag according to claim 1, characterized in that, The separator is provided with one or more pores.

5. The distal airbag according to claim 1, characterized in that, The main cavity is provided with a gas guiding structure, which includes a first channel and a second channel; the outlets of the first channel and the second channel are separated by a preset distance, and the inlets of the first channel and the second channel are respectively connected to the outlet of the gas generating device.

6. The distal airbag according to claim 1, characterized in that, The inflated main cavity partially overlaps with the central passage of the vehicle.

7. A car seat, characterized in that, The car seat has a remote airbag located inside the seat frame; the remote airbag includes a main cavity, a secondary cavity, and a gas generating device. The main cavity is fixedly installed on the seat, and the outlet of the gas generator is connected to the main cavity for inflating the main cavity; the auxiliary cavity is fixedly connected to the occupant side of the main cavity through a connecting part, and the connecting part is provided with a first opening connecting the main cavity and the auxiliary cavity; The first opening is configured as a one-way channel allowing airflow from the main cavity to the secondary cavity; a partition is fixed to the secondary cavity and divides the secondary cavity into a first secondary cavity and a second secondary cavity. The first secondary cavity is located between the main cavity and the second secondary cavity. The partition is provided with air holes to connect the first secondary cavity and the second secondary cavity. After inflation, both the first secondary cavity and the second secondary cavity bulge towards the occupant's position. The second secondary cavity supports the occupant's head or neck, so that the force borne by the second secondary cavity is first transferred to the first secondary cavity, and then the first secondary cavity transfers the force borne by it to the main cavity. The partition is bent, and the first secondary cavity and the second secondary cavity are partially deformed, thereby absorbing part of the impact force. The first auxiliary cavity is fixedly connected to the occupant side of the main cavity, and the second auxiliary cavity is fixedly connected to the occupant side of the first auxiliary cavity. The occupant side of the main cavity refers to the side adjacent to the occupant, and the occupant side of the first auxiliary cavity refers to the side adjacent to the occupant. During inflation, the main cavity inflates first and bulges out from the inside of the seat. The first auxiliary cavity bulges out from the occupant side of the main cavity toward the occupant position, and the second auxiliary cavity bulges out from the occupant side of the first auxiliary cavity toward the occupant position. The partition holds the main body of the auxiliary cavity in place during inflation. The protrusion direction of the sub-cavity is perpendicular to the protrusion direction of the main cavity, and the sub-cavity is generally elongated and protruding towards the occupant. After the first sub-cavity is inflated, the cross-sectional area of ​​the first sub-cavity gradually decreases in the direction extending from the main cavity to the first sub-cavity, so that the volume of the first sub-cavity is greater than the volume of the second sub-cavity. Moreover, after the main cavity, the first sub-cavity, and the second sub-cavity are inflated, they form a three-section structure connected in sequence, and the first sub-cavity and the second sub-cavity are connected to the main cavity in the form of a cantilever structure.

Images