Airbag structure and vehicle

Abstract

The present application provides an airbag structure and a vehicle, the airbag structure comprising at least one head inner tether, an inflation channel, a head chamber, and a chest chamber mounted on a vehicle body and in communication with a gas source. The head chamber is in communication with the chest chamber by means of the inflation channel. An inner sidewall of the head chamber is provided with at least one connection region in one-to-one correspondence with the head inner tether. Each connection region comprises two sub-regions arranged opposite to each other. Each head inner tether is connected between two sub-regions of a same connection region. The airbag structure of the present application reduces secondary injury to the head of an occupant, increases the contact area between the head chamber and the head, and improves the protection effect for the occupant.

Description

Airbag structure and vehicles

[0001] This application claims priority to Chinese Patent Application No. 202520029632.4, filed with the Chinese Patent Office on January 6, 2025, entitled "Airbag Structure and Vehicle", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of vehicle technology, and in particular relates to an airbag structure and vehicle. Background Technology

[0003] Currently, side-impact collisions can cause injuries to either the driver's side or the front passenger side simultaneously. However, the inventors recognized that existing technology, which only adds an airbag to the inside of the driver's seat, has a small protective area and only considers driver-side collisions, neglecting front passenger-side collisions and angled collisions. Therefore, the protection for occupants is poor, and significant safety hazards remain. Furthermore, existing airbags can easily cause secondary injuries to occupants during deployment.

[0004] Application content

[0005] This application addresses the technical problem of poor occupant protection provided by existing airbag structures by providing an airbag structure and a vehicle.

[0006] In view of the above technical problems, this application provides an airbag structure, including at least one head strap, an inflation channel, a head cavity, and a chest cavity mounted on the vehicle body and connected to an air source; the head cavity is connected to the chest cavity through the inflation channel;

[0007] The inner wall of the head cavity is provided with at least one set of connection areas corresponding to the inner head straps; each set of connection areas includes two sub-areas arranged opposite each other; each inner head strap is connected between the two sub-areas of the same set of connection areas.

[0008] Optionally, the inner head strap includes at least one first strap, which is set at a preset tilt angle of 90 degrees with respect to a preset airflow direction.

[0009] Optionally, the first pull strap is provided with a through hole for improving the flow stability of airflow in the head cavity; the through hole is disposed opposite to the inflation channel.

[0010] Optionally, the inner head strap includes at least two second straps spaced apart, the second straps being arranged parallel to a preset airflow direction;

[0011] The inflation channel is located between two adjacent second tension straps.

[0012] Optionally, an external chest strap is provided on the outer wall of the chest cavity; a mounting part for connecting the vehicle body is provided on the chest cavity, and the external chest strap is arranged around the chest cavity and fixed on the mounting part; the external chest strap is arranged parallel to the direction in which the gas source injects gas into the chest cavity.

[0013] Optionally, the airbag structure further includes connecting bolts installed at the mounting portion; the chest cavity and the chest outer strap are both connected to the vehicle body via the connecting bolts; the air source inlet is located at the mounting portion.

[0014] Optionally, the inner head pull strap includes a middle section and two connecting sections respectively connected to opposite ends of the middle section; the two connecting sections respectively connect to the two sub-regions; the width of the connecting section is greater than the width of the middle section, and the edge connection position between the connecting section and the middle section is provided with a transition rounded corner.

[0015] Optionally, the connecting segment includes a connecting portion connecting the intermediate segment, and two arc-shaped protrusions respectively disposed on opposite sides of the connecting portion, wherein the connecting portion and the two arc-shaped protrusions are both connected to the sub-region.

[0016] Optionally, the radius of the arc-shaped protrusion is in the range of 80mm-100mm.

[0017] A vehicle including the aforementioned airbag structure.

[0018] The airbag structure of this application includes at least one head strap, an inflation channel, a head cavity, and a chest cavity mounted on the vehicle body and connected to an air source; the head cavity is connected to the chest cavity through the inflation channel; the inner wall of the head cavity is provided with at least one set of connection areas corresponding one-to-one with the head strap; each set of connection areas includes two sub-areas arranged opposite each other; each head strap is connected between the two sub-areas of the same set of connection areas.

[0019] In the airbag structure of this application, the chest cavity and head cavity are connected by an inflation channel, which improves the corresponding positioning of the chest cavity and head cavity with the occupant's head and chest, optimizes the correspondence of chest and head protection, and enhances the airbag's protective effect. Furthermore, an inner head tether is provided on the inner wall of the head cavity to tighten the two sub-regions of the head cavity when the airbag structure deploys. This not only reduces the time required for the head cavity to fully deploy, reducing the probability of secondary head injury to the occupant, but also makes the head cavity relatively concave at the corresponding position in the connecting area, increasing the contact area between the head cavity and the head, improving head protection, and thus enhancing occupant protection.

[0020] Details of one or more embodiments of this application are set forth in the following drawings and description, and other features and advantages of this application will become apparent from the specification, drawings and claims. Attached Figure Description

[0021] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 is a schematic diagram of the airbag structure provided in an embodiment of this application when it is not deployed.

[0023] Figure 2 is a schematic diagram of the airbag structure provided in another embodiment of this application when it is not deployed.

[0024] Figure 3 is a cross-sectional view of the head cavity of an airbag structure after deployment according to an embodiment of this application.

[0025] Figure 4 is a cross-sectional view of the head cavity after the airbag structure has been deployed according to another embodiment of this application.

[0026] Figure 5 is a schematic diagram of the deployed airbag structure provided in one embodiment of this application.

[0027] Figure 6 is a schematic diagram of the deployed airbag structure provided in another embodiment of this application.

[0028] The reference numerals in the accompanying drawings are as follows: 100, inner head strap; 110, first strap; 111, through hole; 120, second strap; 130, middle section; 140, connecting section; 141, connecting part; 142, arc-shaped protrusion; 150, transition rounded corner; 200, inflation channel; 300, head cavity; 400, air source; 500, chest cavity; 510, outer chest strap; 511, connecting hole; 520, mounting part; 600, connecting bolt. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] It should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this application and to simplify 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 of this application.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] As shown in Figures 1 to 4, one embodiment of this application provides an airbag structure, including at least one head inner strap 100, an inflation channel 200, a head cavity 300, and a chest cavity 500 installed on the vehicle body and connected to an air source 400; the head cavity 300 is connected to the chest cavity 500 through the inflation channel 200; the inner wall of the head cavity 300 is provided with at least one set of connection areas corresponding one-to-one with the head inner strap 100; each set of connection areas includes two sub-regions arranged opposite to each other; each head inner strap 100 is connected between the two sub-regions of the same set of connection areas.

[0033] In this embodiment, the airbag structure can be applied in a vehicle, particularly installed on the side of the vehicle seat. The airbag structure includes two states: retracted (i.e., not deployed) and deployed. In the retracted state, the head strap 100, the inflation channel 200, the head cavity 300, and the chest cavity 500 are all housed within a pre-defined storage space in the vehicle, and neither the head cavity 300 nor the chest cavity 500 is inflated. In the deployed state (i.e., the chest cavity 500 and the head cavity 300 are inflated by the air source 400), as shown in Figures 5 and 6, the chest cavity 500 is approximately located at the occupant's chest, thus providing cushioning protection for the occupant's chest; the head cavity 300 is approximately located at the occupant's head, thus providing cushioning protection for the occupant's head.

[0034] Understandably, the shape of the chest cavity 500 can be set according to actual conditions, as long as it can be roughly at the same level as the chest of the occupant in the deployed state to provide cushioning protection for the occupant's chest. The head cavity 300 is connected to the chest cavity 500 through the inflation channel 200, and thus connected to the air source 400. The shape of the head cavity 300 can be set according to actual conditions, as long as it can be roughly at the same level as the head of the occupant in the deployed state to provide cushioning protection for the occupant's head. The head cavity 300 and the chest cavity 500 are generally made of elastic materials and have a certain degree of extensibility, while the extensibility of the inner head strap 100 is less than that of the head cavity 300 and the chest cavity 500. Therefore, as shown in Figures 3 and 4, when the head cavity 300 is unfolded, the inner head strap 100 can tighten the two oppositely arranged sub-regions connected to it, thereby limiting the extension distance between the two sub-regions, thus reducing the volume of the head cavity 300 after unfolding, thereby reducing the unfolding time of the head cavity 300, reducing the probability of the head cavity 300 colliding with the occupant's head when unfolded, and avoiding secondary injury to the occupant's head; at the same time, it makes the two sub-regions relatively concave, so that the head can be embedded in the concave position, increasing the contact area between the head cavity 300 and the head, and relatively reducing the impact force on the head when in contact with the head. The inflation channel 200 can also limit its extension at its location, making it relatively concave. This allows the occupant's shoulders to be embedded in the concave area, providing approximate positioning and preventing occupant swaying. It also allows the occupant's head to more accurately contact the head cavity 300 and chest cavity 500, improving the cushioning and protective effect of the head cavity 300 and chest cavity 500. The two sub-regions can be positioned relative to each other on the inner wall of the head cavity 300 as needed. As long as the two sub-regions are not adjacent to each other, after connecting the inner head strap 100, the unfolded volume of the head cavity 300 can be reduced by the inner head strap 100, and the connecting area can be relatively concave to increase the contact area of ​​the head. The number of inner head straps 100 can be set according to actual conditions, and the width and length of the inner head straps 100 can be set according to actual conditions, as long as the volume of the head cavity 300 after unfolding can be reduced and the connecting area can be made relatively concave to increase the contact area of ​​the head.

[0035] As shown in Figures 1 to 4, in one embodiment, the head cavity 300 is symmetrically arranged, meaning that when the head cavity 300 is in the retracted state, the inner sidewalls of the head cavity 300 can symmetrically fit together. Two sub-regions are symmetrically arranged on the two symmetrical inner sidewalls of the head cavity 300, allowing the head cavity 300 to unfold symmetrically, improving stability during unfolding and preventing swaying. The two sub-regions are located approximately in the middle after the inner sidewalls of the head cavity 300 are symmetrically fitted together. Therefore, when the head cavity 300 is in the unfolded state, the concave area formed by the inner head strap 100 can be located approximately in the middle of the head cavity 300, providing uniform cushioning protection around the occupant's head and reducing stress concentration.

[0036] In the airbag structure of the above embodiments of this application, the inflation channel 200 connects the chest cavity 500 and the head cavity 300, improving the corresponding positioning effect of the chest cavity 500 and the head cavity 500 with the occupant's head and chest, optimizing the correspondence of protection for the occupant's chest and head, and improving the airbag protection effect. Furthermore, an inner head pull strap 100 is provided on the inner wall of the head cavity 300 to tighten the two sub-regions of the head cavity 300 when the airbag structure deploys. This not only reduces the time required for the head cavity 300 to fully deploy, reducing the probability of secondary head injury to the occupant, but also makes the head cavity relatively concave at the corresponding position of the connecting area, increasing the contact area between the head cavity 300 and the head, improving the head protection effect, and thus improving the occupant protection effect.

[0037] As shown in Figures 1 and 3, in one embodiment, the head strap 100 includes at least one first strap 110. The first strap 110 is set at a preset angle to a preset airflow direction, which refers to the direction in which airflow enters the head cavity 300 through the inflation channel 200. Understandably, the chest cavity 500 and the head cavity 300 are arranged approximately vertically; therefore, the airflow direction from the inflation channel 200 into the head cavity 300 is approximately vertical. The first strap 110 needs to be set at a preset angle to the preset airflow direction so that the airflow entering from the inflation channel 200 can be directed onto the first strap 110, thereby allowing the first strap 110 to be deployed more quickly.

[0038] Understandably, the preset tilt angle can be set according to requirements. As shown in Figure 1, in one embodiment, the preset tilt angle is 90 degrees. Understandably, the first pull strap 110 is set at a 90-degree angle to the preset airflow direction. Therefore, the first pull strap 110 is arranged horizontally. As shown in Figure 5, the concave area formed by the first pull strap 110 on the head cavity 300 is roughly horizontal. At this time, the airflow entering from the inflation channel 200 can be blown onto the first pull strap 110, thereby assisting the first pull strap 110 to be unfolded more quickly. Furthermore, after the head cavity 300 is fully unfolded, the first pull strap 110 can pull the two opposite sub-regions closer together, thereby causing the head cavity 300 to be tightened and concave from the middle position for a better fit with the member's head.

[0039] As shown in Figures 1 and 3, in one embodiment, the first pull strap 110 is provided with a through hole 111 for improving the flow stability of airflow in the head cavity 300; the through hole 111 is disposed opposite to the inflation channel 200. It can be understood that Figure 3 shows the unfolded state of the first pull strap 110 as observed from the inflation channel 200 after the head cavity 300 has been inflated and unfolded. In this embodiment, the direction of airflow from the inflation channel 200 towards the head cavity 300 is approximately perpendicular to the first pull strap 110. The airflow acts on the first pull strap 110, and the first pull strap 110 also blocks some airflow while rapidly unfolding. Therefore, providing a through hole 111 on the first pull strap 110 opposite to the inflation channel 200 can increase the amount and speed of airflow passing through the first pull strap 110, allowing the head cavity 300 to unfold faster and more evenly, thus improving the stability of the airbag structure.

[0040] As shown in Figures 2 and 4, in one embodiment, the inner head strap 100 includes at least two second straps 120 spaced apart. The second straps 120 are parallel to a preset airflow direction, which refers to the direction in which airflow enters the head cavity 300 through the inflation channel 200. The inflation channel 200 is located between two adjacent second straps 120. Understandably, the parallel arrangement of the two adjacent second straps 120 with the preset airflow direction improves airflow permeability. Understandably, Figure 4 shows the unfolded state of the second straps 120 as observed from between the two second straps 120 after the head cavity 300 has been inflated and unfolded. In this embodiment, the parallel arrangement of the second straps 120 with the preset airflow direction means approximately parallel; a small angle of inclination between the second straps 120 and the preset airflow direction is also acceptable, as long as the second straps 120 are arranged approximately vertically without affecting the airflow effect. In this embodiment, the number of the second pull straps 120 can be set to two or more as needed. Each second pull strap 120 will tighten its corresponding two sub-regions. In this way, at least two concave regions will be formed on the head cavity 300, as shown in Figure 6. The at least two concave regions will give the head cavity 300 a concave surface, which can restrict the movement of the occupant's head, increase the protection range of the head cavity 300 for the head, and better fix the head, thus providing better protection for the head.

[0041] As shown in Figures 1 and 2, in one embodiment, an external chest strap 510 is provided on the outer wall of the chest cavity 500; a mounting part 520 for connecting to the vehicle body is provided on the chest cavity 500, and the external chest strap 510 is arranged around the chest cavity 500 and fixed on the mounting part 520; the external chest strap 510 is arranged parallel to the direction in which the gas source 400 injects gas into the chest cavity 500.

[0042] Understandably, the extensibility of the external chest strap 510 is less than that of the chest cavity 500, thereby reducing the volume of the chest cavity 500 after deployment, ensuring airbag stability, controlling the shape of the chest cavity 500 after deployment, and reducing the swaying of the chest cavity 500, thus reducing the oscillation of the head cavity 300. The width of the external chest strap 510 can be set according to actual conditions, as long as it can reduce the volume of the chest cavity 500 after deployment and reduce the swaying of the chest cavity 500. The mounting part 520 is fixedly connected to the vehicle body, and the outer chest strap 510 is fixed to the mounting part 520, that is, the outer chest strap 510 is fixedly connected to the vehicle body. Therefore, when the chest cavity 500 is deployed, most of the stress on the outer chest strap 510 is applied to the vehicle body, avoiding damage to the chest cavity 500. Furthermore, the outer chest strap 510 does not move with the deployment of the chest cavity 500, thus allowing for precise control of the position and shape of the deployed chest cavity 500. The outer chest strap 510 is arranged parallel to the direction of the gas flow, thereby strengthening the impact of the airflow and preventing excessive extension of the chest cavity 500.

[0043] As shown in Figures 1 and 2, in one embodiment, the airbag structure further includes a connecting bolt 600 mounted on the mounting portion 520; the chest cavity 500 and the external chest strap 510 are both connected to the vehicle body via the connecting bolt 600; the inlet of the air source 400 is located at the mounting portion 520. Understandably, the connecting bolt 600 can be positioned at different locations on the mounting portion 520 according to actual conditions, as long as the chest cavity 500 can be connected to the vehicle body and the external chest strap 510 can be mounted on the connecting bolt 600. In one embodiment, the external chest strap 510 has connecting holes 511 at opposite ends, and the external chest strap 510 is hooked onto the connecting bolt 600 through the connecting holes 511 to prevent damage to the chest cavity 500 at the mounting portion 520.

[0044] As shown in Figures 1 to 4, in one embodiment, the inner head strap 100 includes a middle section 130 and two connecting sections 140 respectively connected to opposite ends of the middle section 130; the two connecting sections 140 respectively connect two sub-regions; the width of the connecting sections 140 is greater than the width of the middle section 130. Understandably, the length of the middle section 130 can be set according to requirements, such as based on the distance between two relatively positioned sub-regions after the head cavity 300 is unfolded. The longer the middle section 130, the greater the distance between the two relatively positioned sub-regions after the head cavity 300 is unfolded. The length of the middle section 130 can be set according to actual conditions to control the shape of the head cavity 300 after unfolding. The two connecting sections 140 are used to connect the two sub-regions respectively, and the width of the connecting sections 140 is greater than the width of the middle section 130, which ensures stable installation of the inner head strap 100.

[0045] As shown in Figures 1 to 4, in one embodiment, a transition fillet 150 is provided at the edge connection between the connecting segment 140 and the intermediate segment 130. Understandably, the transition fillet 150 is used to prevent breakage due to stress concentration between the connecting segment 140 and the intermediate segment 130, distributing stress at the transition fillet 150. The diameter of the transition fillet 150 can be set according to actual conditions, as long as it can prevent breakage due to stress concentration between the connecting segment 140 and the intermediate segment 130.

[0046] As shown in Figures 1 to 4, in one embodiment, the connecting segment 140 includes a connecting portion 141 connecting the intermediate segment 130, and two arc-shaped protrusions 142 respectively disposed on opposite sides of the connecting portion 141. Both the connecting portion 141 and the two arc-shaped protrusions 142 connect to the sub-region. Understandably, the arc-shaped protrusions 142 are used to prevent the opposite side of the connecting segment 140 from breaking due to stress concentration, distributing stress on the arc-shaped protrusions 142, and simultaneously maintaining a good unfolded shape of the head cavity 300. The arc radius of the arc-shaped protrusions 142 can be set according to actual conditions, as long as it can prevent the opposite side of the connecting segment 140 from breaking due to stress concentration or affecting the unfolded shape of the head cavity 300. In one embodiment, the arc radius of the arc-shaped protrusions 142 is in the range of 80mm-100mm.

[0047] An embodiment of this application also provides a vehicle including the aforementioned airbag structure. The specific structure of the airbag structure can be referred to in the above embodiments, and will not be repeated here.

[0048] In the vehicle described in the above embodiments of this application, the airbag inflation channel 200 connects the chest cavity 500 and the head cavity 300, improving the corresponding positioning effect of the chest cavity 500 and the head cavity 500 with the occupant's head and chest, optimizing the correspondence of protection for the occupant's chest and head, and improving the airbag protection effect. Furthermore, an inner head strap 100 is provided on the inner wall of the head cavity 300 to tighten the two sub-regions of the head cavity 300 when the airbag structure deploys. This not only reduces the full deployment time of the head cavity 300, reducing the probability of secondary head injury to the occupant, but also makes the head cavity relatively concave at the corresponding position in the connecting area, increasing the contact area between the head cavity 300 and the head, improving the head protection effect, and thus improving the occupant protection effect.

[0049] The above are merely embodiments of the airbag structure and vehicle of this application, and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. An airbag structure, wherein, It includes at least one internal head strap, an inflation channel, a head cavity, and a chest cavity mounted on the vehicle body and connected to an air source; the head cavity is connected to the chest cavity through the inflation channel; The inner wall of the head cavity is provided with at least one set of connection areas corresponding to the inner head straps; each set of connection areas includes two sub-areas arranged opposite each other; each inner head strap is connected between the two sub-areas of the same set of connection areas.

2. The airbag structure according to claim 1, wherein, The head strap includes at least one first strap, which is set at a preset tilt angle of 90 degrees with respect to a preset airflow direction.

3. The airbag structure according to claim 2, wherein, The first pull strap is provided with a through hole for improving the flow stability of airflow in the head cavity; the through hole is arranged opposite to the inflation channel.

4. The airbag structure according to claim 1, wherein, The head strap includes at least two second straps spaced apart, and the second straps are arranged parallel to a preset airflow direction. The inflation channel is located between two adjacent second tension straps.

5. The airbag structure according to claim 1, wherein, The outer wall of the chest cavity is provided with an external chest strap; the chest cavity is provided with a mounting part for connecting to the vehicle body, and the external chest strap is arranged around the chest cavity and fixed to the mounting part; the external chest strap is arranged parallel to the direction in which the gas source sprays gas into the chest cavity.

6. The airbag structure according to claim 5, wherein, The airbag structure also includes connecting bolts installed at the mounting part; the chest cavity and the chest outer strap are both connected to the vehicle body via the connecting bolts; the air source inlet is located at the mounting part.

7. The airbag structure according to claim 1, wherein, The inner head pull strap includes a middle section and two connecting sections respectively connected to opposite ends of the middle section; the two connecting sections respectively connect to the two sub-regions; the width of the connecting section is greater than the width of the middle section, and the edge connection position between the connecting section and the middle section is provided with a transition rounded corner.

8. The airbag structure according to claim 7, wherein, The connecting segment includes a connecting part that connects to the intermediate segment, and two arc-shaped protrusions respectively disposed on opposite sides of the connecting part. Both the connecting part and the two arc-shaped protrusions connect to the sub-region.

9. The airbag structure according to claim 8, wherein, The radius of the arc-shaped protrusion is in the range of 80mm-100mm.

10. A vehicle, wherein, Includes the airbag structure as described in any one of claims 1 to 9.

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