Airbag device, airbag inflation control method and vehicle

Abstract

This invention discloses an airbag device, an airbag inflation control method, and a vehicle. The airbag device includes: an airbag body comprising a first sheet and a second sheet connected at their edges, an air chamber inside the airbag body, and the airbag body being divided vertically into a shoulder protection section and a chest and abdomen protection section; a limiting member connected between the first and second sheets corresponding to the shoulder protection section to limit the deployment dimension of the shoulder protection section towards the seat; and an elastic connector connected between the first and second sheets corresponding to the chest and abdomen protection section to elastically limit the deployment dimension of the chest and abdomen protection section towards the seat. Therefore, by designing this airbag device, the arms of drivers and passengers of different body types can be smoothly raised upwards, avoiding arm bouncing, thereby improving its practicality and safety.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an airbag device, an airbag inflation control method, and a vehicle. Background Technology

[0002] With the development of automotive technology, passive safety has become a crucial component of vehicle safety. The inclusion of appropriate airbags has become mainstream in modern automobiles. Considering the increasing proportion of side-impact collisions in road traffic accidents, automakers are placing greater emphasis on vehicle side-impact safety. The airbag system is an auxiliary protection system in automobiles. Side airbags are positioned between the occupants and the door panels, windows, and B-pillars. When deployed, the airbag pressure and its spindle-shaped design can exert significant pressure on the occupants' chest and ribs, potentially causing substantial injury.

[0003] In current technologies, side airbags have a single, fixed structure. The bend C of the side airbag is designed based on the position of the shoulder ribs and upper chest ribs of the occupant. However, the rib height varies among occupants of different body types. Therefore, this airbag has significant limitations in practical application, as it can only protect occupants of a single body type and cannot cover occupants of other body types, resulting in low practicality. Furthermore, when the airbag bends in the area between the shoulder ribs and upper chest ribs: if the shoulder protection area is relatively narrow in the longitudinal direction of the vehicle, in a side-impact collision (e.g., a 75° angle at 32 km / h side pole impact), the occupant moves diagonally forward, and the shoulder is more likely to slip off the airbag surface and directly contact the vehicle's interior structure, thus failing to protect the shoulder. If the shoulder protection area is relatively wide in the longitudinal direction of the vehicle, the corresponding shoulder protection area will be relatively thick, which can easily obstruct the arm from being raised, preventing the arm from being raised. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide an airbag device that improves the protection of the chest and abdomen of occupants of different body types, thereby improving the practicality and applicability of the airbag device.

[0005] The present invention further proposes an inflation control method for an airbag device.

[0006] The present invention further proposes a vehicle.

[0007] According to a first aspect of the present invention, an airbag device includes: an airbag comprising: an airbag body including a first sheet and a second sheet, the edges of the first sheet and the second sheet being connected, the interior of the airbag body having an air cavity, and the airbag body being divided in a vertical direction into a shoulder protection portion and a chest and abdomen protection portion; a limiting member connected between the first sheet and the second sheet corresponding to the shoulder protection portion to limit the deployment dimension of the shoulder protection portion toward the seat side; and an elastic connector connected between the first sheet and the second sheet corresponding to the chest and abdomen protection portion to elastically limit the deployment dimension of the chest and abdomen protection portion toward the seat side; wherein, after the airbag is inflated, the deployment dimension of the chest and abdomen protection portion toward the seat side is greater than the deployment dimension of the shoulder protection portion toward the seat side.

[0008] Therefore, by setting up this airbag device, the arms of drivers and passengers of different body types can be smoothly raised upwards, avoiding the bouncing of the arms, thereby improving its practicality and safety.

[0009] In some examples of the present invention, a dividing line is provided between the shoulder protection part and the chest and abdomen protection part, and the distance between the elastic connector and the dividing line in the vertical direction is d, where d satisfies the relationship: 30mm≤d≤70mm.

[0010] In some examples of the present invention, d = 50 mm.

[0011] In some examples of the invention, the resilient connector is located below the half of the dividing line near the front end, and the limiting member is located above the half of the dividing line near the front end.

[0012] In some examples of the invention, the elastic connector is located below a line segment at a distance from the front end of the dividing line that is between 1 / 4 and 2 / 5 of the length of the dividing line.

[0013] In some examples of the present invention, on the dividing line, a reference position is set at a distance of 1 / 3 of the length of the dividing line from the front end of the dividing line, and the elastic connector is located below the reference position.

[0014] In some examples of the present invention, the limiting member is located above the reference position.

[0015] In some examples of the present invention, the limiting member is a linear member, the limiting member having a first end and a second end, the first end being connected to the first piece and the second end being connected to the second piece.

[0016] In some examples of the present invention, the elastic connector is a linear member, the elastic connector having a first connecting end and a second connecting end, the first connecting end being connected to the first sheet body, and the second connecting end being connected to the second sheet body.

[0017] In some examples of the present invention, the airbag device further includes a gas generator, the gas generator being provided with an air outlet, the air outlet being connected to the chest and abdominal protective portion.

[0018] In some examples of the present invention, the gas generator is a multi-stage gas generator.

[0019] In some examples of the present invention, the elastic connector is one of an elastic rope, an elastic strap, and an elastic bar.

[0020] In some examples of the present invention, the limiting member includes a plurality of such limiting members, which are arranged vertically.

[0021] In some examples of the present invention, the limiting member is one of a suture and an elastic band.

[0022] In some examples of the present invention, the suture line is one of the following: circular, straight strip, elliptical, curved strip, and floral.

[0023] According to a second aspect of the present invention, an airbag device inflation control method includes the following steps: acquiring body shape information of a driver or passenger; determining the ignition level of a gas generator based on the body shape information of the driver or passenger; and controlling the ignition of the gas generator based on the ignition level.

[0024] In some examples of the present invention, determining the ignition level of the gas generator based on the body type information of the driver / passenger includes: when the driver / passenger has a first-class body type, determining the ignition level of the gas generator to be first-class ignition; when the driver / passenger has a second-class body type, determining the ignition level of the gas generator to be second-class ignition, wherein the body type information includes at least one of height and weight, the height in the second-class body type information is greater than that in the first-class body type information, and / or the weight in the second-class body type information is greater than that in the first-class body type information; within the same time period, the gas flow rate provided by the gas generator during first-class ignition is less than the gas flow rate provided by the gas generator during second-class ignition.

[0025] In some examples of the present invention, obtaining the body shape information of the driver and passenger includes: obtaining the head position of the driver and passenger; and determining the body shape information of the driver and passenger based on the head position of the driver and passenger.

[0026] In some examples of the present invention, obtaining the body shape information of the driver and passenger includes: obtaining the facial information of the driver and passenger; matching the facial information of the driver and passenger with information stored in the database to obtain matching information; and determining the body shape information of the driver and passenger based on the matching information.

[0027] A vehicle according to a third aspect of the present invention includes: the airbag device described above.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a side view of an airbag device according to an embodiment of the present invention;

[0031] Figure 2 It is along Figure 1 A cross-sectional view along the AA direction;

[0032] Figure 3 This is another side view of the airbag device according to an embodiment of the present invention;

[0033] Figure 4 This is a front view of the airbag device according to an embodiment of the present invention when inflated for a larger driver or passenger.

[0034] Figure 5 This is a front view of the airbag device according to an embodiment of the present invention when inflated for a small-sized driver or passenger.

[0035] Figure 6 This is a side view of an airbag device according to another embodiment of the present invention;

[0036] Figure 7 It is along Figure 6 A sectional view along the A1-A1 direction;

[0037] Figure 8 This is a side view of an airbag device according to another embodiment of the present invention;

[0038] Figure 9 It is along Figure 8 A sectional view along the A2-A2 direction;

[0039] Figure 10 This is a schematic flowchart of an airbag device inflation control method according to an embodiment of the present invention.

[0040] Figure label:

[0041] 100. Airbag device;

[0042] 10. Airbag; 11. First piece; 12. Second piece; 13. Air chamber; 131. Shoulder protection;

[0043] 132. Chest and abdominal protection; 20. Limiting component; 30. Elastic connector; 40. Gas generator;

[0044] 41. Vent; 50. Dividing line. Detailed Implementation

[0045] The embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0046] The following is for reference. Figures 1-10 An airbag device 100 according to an embodiment of the present invention is described. The airbag device 100 can be used in a vehicle and can adaptively raise its arms to protect the chest and abdomen of the driver and passenger according to the size of the occupants.

[0047] Combination Figures 1-5 As shown, the airbag device 100 according to a first aspect embodiment of the present invention mainly includes an airbag 10, a limiting member 20, and an elastic connector 30. The airbag 10 includes an airbag body, which includes a first piece 11 and a second piece 12. The edges of the first piece 11 and the second piece 12 are connected. The interior of the airbag body has an air cavity 13, which is divided vertically into a shoulder protection portion 131 and a chest and abdomen protection portion 132. The limiting member 20 is connected between the first piece 11 and the second piece 12 corresponding to the shoulder protection portion 131 to limit the deployment size of the shoulder protection portion 131 towards the seat side. The elastic connector 30 is connected between the first piece 11 and the second piece 12 corresponding to the chest and abdomen protection portion 132 to elastically limit the deployment size of the chest and abdomen protection portion 132 towards the seat side; wherein, after the airbag is inflated, the deployment size of the chest and abdomen protection portion 132 towards the seat side is greater than the deployment size of the shoulder protection portion 131 towards the seat side.

[0048] Specifically, the edges of the first piece 11 and the second piece 12 of the airbag 10 are sealed together. For example, the edges of the first piece 11 and the second piece 12 are sewn together with stitches. After inflation, the first piece 11 and the second piece 12 of the airbag 10 are positioned correspondingly in the left and right directions of the vehicle. The first piece 11 of the airbag 10 is closer to the side of the driver and passenger's body, and the second piece 12 of the airbag 10 is closer to the side of the door. After the airbag 10 is inflated, an air chamber 13 is formed inside the first piece 11 and the second piece 12. The air chamber 13 is further divided into an upper shoulder protection part 131 and a lower chest and abdomen protection part 132 according to the body structure of the driver and passenger. The air chamber 13 corresponding to the shoulder protection part 131 and the lower chest and abdomen protection part 132 can reduce the impact force on the driver and passenger, thereby achieving the effect of protecting the driver and passenger.

[0049] In this design, after the airbag 10 inflates, the limiting member 20 at the shoulder protection section 131 restricts the degree of expansion of the first piece 11 at the shoulder protection section 131, which in turn restricts the thickness of the shoulder protection section 131 in the air chamber 13. The expansion thickness of the chest and abdomen protection section 132 below the shoulder protection section 131 is greater than that of the shoulder protection section 131. The chest and abdomen protection section 132 deforms more towards the seat side, while the shoulder protection section 131 deforms less towards the seat side. In other words, after inflation, the inner side of the chest and abdomen protection section 132 is further inward than that of the shoulder protection section 131. Thus, the chest and abdomen protection section 132 and the shoulder protection section 131 form a slope, which allows the driver and passenger to raise their arms smoothly and avoids random bouncing of the driver and passenger's arms, thereby improving the protection of the driver and passenger's body after the airbag 10 inflates.

[0050] In addition, such as Figure 4 and Figure 5 As shown, after the airbag 10 is inflated, the elastic connector 30 provided at the chest and abdomen protection section 132 can elastically limit the degree of expansion of the first piece 11 at the chest and abdomen protection section 132 toward the driver's body according to the amount of gas in the chest and abdomen. That is, it limits the space for the air chamber 13 at the chest and abdomen protection section 132 to expand toward the driver's shoulder. For passengers with larger body sizes, the expansion space of the chest and abdomen protection section 132 toward the driver's shoulder is larger. This allows the expansion volume of the air chamber 13 at the chest and abdomen protection section 132 to better fit the different body shapes of the driver and passengers. It can also provide a more body-fitting arm support position for drivers and passengers of different body shapes, achieving the effect of adaptively raising the arms of drivers and passengers of different body shapes. This improves the practicality and applicability of the airbag device 100, thereby reducing the harm to drivers and passengers in the event of a car accident and improving its protection for drivers and passengers.

[0051] Therefore, by setting up the airbag device 100, the arms of drivers and passengers of different body types can be smoothly raised upwards, avoiding the bouncing of the arms, thereby improving its practicality and safety.

[0052] According to some optional embodiments of the present invention, in combination Figures 1-9 As shown, a dividing line 50 is formed between the shoulder protection section 131 and the chest and abdomen protection section 132. In the vertical direction, the distance between the elastic connector 30 and the dividing line 50 is d, where d satisfies the relationship: 30mm≤d≤70mm. Specifically, the dividing line 50 of the air chamber 13 separates the shoulder protection section 131 and the chest and abdomen protection section 132 of the air chamber 13. The distance between the elastic connector 30 of the chest and abdomen protection section 132 located below the shoulder protection section 131 and the dividing line 50 above it is d, where 30mm≤d≤70mm. This arrangement covers the shoulder height difference between 5th-degree females and 50th-degree males. Moreover, the elastic connector 30 can elastically limit the expansion degree of the air chamber 13 near the connection point of the chest and abdomen protection section 132, thereby allowing the chest and abdomen protection section 132 to form different expansion degrees for drivers and passengers of different body types, thus improving the applicability and practicality of the airbag device 100. For example, the distance between the elastic connecting strip and the dividing line 50 above it is d, which can be 30mm, 40mm, 50mm, 60mm and 70mm, and is not limited to this.

[0053] Specifically, in combination Figure 1 , Figure 4 and Figure 5 As shown, the distance d between the elastic connector 30 and the dividing line 50 is 50mm. Experimental data shows that the shoulder height difference between a 5th-grade female and a 50th-grade male is 50mm. From bottom to top, the height difference between the elastic connector 30 and the dividing line 50 covers the shoulder height difference from the 5th-grade female to the 50th-grade male, accurately encompassing the shoulder height of a normal adult driver. This design improves the applicability of the airbag 10 in adaptively limiting the thickness of the shoulder protection section 131 for normal users, and also standardizes the specifications and manufacturing process of the elastic connector 30 on the airbag 10, improving its economic efficiency.

[0054] Alternatively, the elastic connector 30 is located below the front half of the dividing line 50, and the limiting member 20 is located above the front half of the dividing line 50. Specifically, on the side profile of the airbag 10, the limiting member 20 and the elastic connector 30 are respectively located above and below the front half of the dividing line 50. This arrangement provides a reference point for the positions of the elastic connector 30 and the limiting member 20, thereby improving the installation accuracy of the elastic connector 30 and the limiting member 20. Furthermore, this position facilitates the elastic connector 30 and the limiting member 20 in limiting the inflation thickness of the airbag 10.

[0055] Furthermore, the elastic connector 30 is located below a line segment at a distance between 1 / 4 and 2 / 5 of the length of the dividing line 50 from its front end. Specifically, on the side profile of the airbag 10, along the length of the dividing line 50, the elastic connector 30 is located at a distance between 1 / 4 and 2 / 5 of the length of the dividing line 50 from its front end. In a direction perpendicular to the dividing line 50, the elastic connector 30 is located below it. This arrangement allows the airbag 10 to deploy at a speed and mode that is optimal at 1 / 3 of the distance from the dividing line 50. Since the installation position of the elastic connector 30 is set within a range around the location where the airbag 10 has high deployment efficiency, the elastic connector 30 can more efficiently and directly limit the over-inflation of the airbag 10, thereby improving the stability and practicality of the airbag device 100.

[0056] Specifically, in combination Figure 1 and Figure 3 As shown, on the dividing line 50, a reference position is set at a distance of 1 / 3 of the length of the dividing line 50 from its front end, and the elastic connector 30 is located below the reference position. The reference position is located at the front end of the dividing line 50, which separates the shoulder protection section 131 and the chest and abdomen protection section 132, at 1 / 3 of its length. Simulation experiments have shown that the airbag 10 exhibits better deployment speed and deployment mode at this 1 / 3 position. The elastic connector 30 is positioned below the reference position, ensuring that the elastic connector 30 and the reference position for airbag 10 deployment are aligned vertically. When the airbag 10 expands outwards from the reference position, the elastic connector 30, concentric with the reference position, can more efficiently and evenly restrict the expansion of the chest and abdomen protection section 132, preventing excessive local stress at the edges of the chest and abdomen protection section 132 and thus avoiding air leakage. This improves the reliability and practicality of the airbag device 100. The limiting member 20 is located above the reference position, which makes it easier for the limiting member 20 to limit the shoulder protection part 131 at the front position, thereby better limiting the expansion thickness of the shoulder protection part 131 and avoiding affecting the protection of the shoulder by the shoulder protection part 131.

[0057] Specifically, in combination Figure 1 , Figure 2 , Figures 6-9 As shown, the limiting member 20 is located above the reference position. When the airbag 10 is not deployed, it is centered on a straight line extending vertically from the reference position. With the limiting member 20 above the reference position, this can more directly and effectively limit the gas pressure when the airbag 10 in its compressed and folded state expands and unfolds upon impact with an external force. This better limits the expansion thickness of the shoulder protection part 131 and avoids affecting the protection of the shoulder by the shoulder protection part 131.

[0058] According to some optional embodiments of the present invention, in combination Figure 7 and Figure 9 As shown, the limiting member 20 is a linear member, having a first end and a second end. The first end of the limiting member 20 is connected to the first piece 11, and the second end of the limiting member 20 is connected to the second piece 12. The first end of the limiting member 20 is connected to the first piece 11, and the second end of the limiting member 20 is connected to the second piece 12. The limiting member 20 surrounds the airbag 10 in a closed-loop manner, thus allowing the first and second ends of the limiting member 20 to jointly restrict the circumferential expansion space of the airbag 10 when subjected to external force impact. This more directly and effectively utilizes the limiting member 20 to restrict the shoulder protection part 131, improving the practicality and reliability of the airbag device 100.

[0059] According to some optional embodiments of the present invention, in combination Figure 4 , Figure 5 , Figure 7 and Figure 9 As shown, the elastic connector 30 is a linear component, having a first connecting end and a second connecting end. The first connecting end of the elastic connector 30 is connected to the first piece 11, and the second connecting end of the elastic connector 30 is connected to the second piece 12. Specifically, the first end of the elastic connector 30 is connected to the first piece 11, and the second end of the elastic connector 30 is connected to the second piece 12. The elastic connector 30 surrounds the airbag 10 in a closed-loop manner, thus allowing the first and second ends of the elastic connector 30 to jointly restrict the circumferential expansion space of the airbag 10 when subjected to external force impact. This more directly and effectively utilizes the elastic connector 30 to restrict the chest and abdominal protection part 132, improving the practicality and reliability of the airbag device 100.

[0060] According to some optional embodiments of the present invention, in combination Figure 1 , Figure 2 , Figures 6-9As shown, the elastic connector 30 is one of an elastic rope, an elastic strap, and an elastic bar. For example, the elastic connector 30 provided at the chest and abdomen protection section 132 is an elastic strap. The elastic strap can undergo elastic deformation. When the airbag 10 begins to inflate, the elastic strap on the chest and abdomen protection section 132 50mm below the dividing line 50 can undergo different elastic deformations according to the amount and pressure of gas inside the chest and abdomen protection section 132, thereby matching the chest and abdomen inflation state corresponding to different body types of drivers and passengers, and thus improving the integrity and reliability of the airbag device 100 in achieving the adaptive arm raising function.

[0061] According to some optional embodiments of the present invention, in combination Figures 1-5 As shown, the airbag device 100 also includes a gas generator 40, which has an air outlet 41 connected to the chest and abdomen protection part 132. Specifically, the axis of the gas generator 40 is perpendicular to the dividing line 50. The airbag device 100 is equipped with a gas generator 40 that can inflate the airbag 10. The gas generator 40 has an air outlet 41 connected to the chest and abdomen protection part 132. The chest and abdomen protection part 132 is also connected to the shoulder protection part 131. When the airbag device 100 is subjected to a large external force impact, the gas generator 40 will generate gas that flows from the air outlet 41 to the chest and abdomen protection part 132, and then from the chest and abdomen protection part 132 to the shoulder protection part 131 above it. This arrangement allows the gas generated by the gas generator 40 to first inflate the larger chest and abdomen protection part 132, and then inflate the smaller shoulder protection part 131, thereby preventing damage to the important parts of the driver and passengers to a greater extent, and thus improving the integrity and practicality of the airbag device 100 in protecting the driver and passengers.

[0062] Specifically, in combination Figures 1-5 As shown, the gas generator 40 is a multi-stage gas generator 40. Specifically, the gas generator 40 of the airbag device 100 is a multi-stage gas generator 40, with each stage of the multi-stage gas generator 40 producing a different amount and pressure of gas for the airbag 10. This configuration allows the airbag device 100 to selectively deploy different stages of the gas generator 40 according to the size of the occupant after a collision. This allows the multi-stage gas generator 40 to produce a corresponding amount of gas to fill the chest and abdominal protection section 132, resulting in different degrees of inflation of the chest and abdominal protection section 132. This enables the airbag device 100 to adaptively raise its arms according to the size of the occupant, thereby improving the practicality and applicability of the airbag device 100. For example, the multi-stage gas generator 40 can be a two-stage gas generator.

[0063] According to some optional embodiments of the present invention, in combination Figure 1 , Figure 2 , Figures 6-9As shown, the limiting member 20 can be either a stitch or an elastic band. For example, the limiting member 20 provided at the shoulder protection section 131 can be a stitch, which can be provided near the middle area of ​​the shoulder protection section 131 along the height direction of the vehicle. This allows it to tightly fix the opening of the middle area of ​​the shoulder protection section 131 after the airbag 10 begins to inflate, thereby limiting the thickness of the shoulder protection section 131 after deployment. Alternatively, the limiting member 20 provided at the shoulder protection section 131 can be an elastic band, which can be provided near the middle area of ​​the shoulder protection section 131 along the height direction of the vehicle. This elastic band can elastically fix the opening of the middle area of ​​the shoulder protection section 131 after the airbag 10 begins to inflate, thereby elastically limiting the thickness of the shoulder protection section 131 after deployment. Compared to a stitch that fixes the opening at the middle area of ​​the shoulder protection section 131, this reduces the risk of the shoulder protection section 131 breaking due to excessive atmospheric pressure, thereby improving the reliability of the airbag device 100.

[0064] Furthermore, combined Figure 2 and Figure 4 As shown, the limiting member 20 includes multiple members arranged vertically. Among them, the multiple limiting members 20 above the dividing line 50 are arranged at intervals in the vertical direction on the shoulder protection part 131. Compared with only one limiting member 20, this can strengthen the restriction on the spatial dimension of the shoulder protection part 131 when it expands in the vertical direction, and further limit the thickness of the shoulder protection part 131 after it expands and unfolds. This allows the airbag 10 to raise the user's arm more smoothly and naturally according to the body structure, thereby improving the scientific and practical nature of the airbag device 100.

[0065] Specifically, in combination Figure 1 , Figure 2 , Figures 6-9 As shown, the suture line can be one of the following shapes: circular, straight, elliptical, curved, or floral. Specifically, the two ends of the suture line are connected to the first piece 11 and the second piece 12, respectively, forming an elastically opening hole between the two ends. This reduces the risk of the first piece 11 and the second piece 12 being ruptured by air pressure, thus making the airbag 10 more stable. For example, the limiting member 20 provided at the shoulder protection part 131, i.e., the shape of the suture line, can be circular. The suture line can limit the unfolded size of the shoulder protection part 131, thereby limiting the unfolded thickness of the shoulder protection part 131 when it expands. Moreover, the multiple wrapping method along the outer edge of the limiting point of the shoulder protection part 131 can also increase its limiting ability at the limiting point, thereby improving the reliability of the airbag device 100.

[0066] The inflation control method of the airbag device 100 described above according to the second aspect embodiment of the present invention, combined with Figure 10As shown, the process includes the following steps: acquiring the body shape information of the driver and passengers; determining the ignition level of the gas generator 40 based on the body shape information of the driver and passengers; and controlling the ignition of the gas generator 40 according to the ignition level. Specifically, the body shape information of the driver and passengers is acquired and identified in advance when they are driving or riding in the vehicle; different ignition levels of the gas generator 40 are matched to different body shapes of the driver and passengers based on the analysis of their body shape information; and the ignition of the gas generator 40 is controlled according to the ignition level matched to different body shapes of the driver and passengers to provide the degree of airbag 10 inflation for different body shapes of the driver and passengers.

[0067] According to some optional embodiments of the present invention, in combination Figure 1 , Figure 2 , Figures 6-9 As shown, based on the body type information of the driver and passenger, the ignition level of the gas generator 40 is determined as follows: when the driver and passenger have the first-class body type information, the ignition level of the gas generator 40 is determined to be first-class ignition; when the driver and passenger have the second-class body type information, the ignition level of the gas generator 40 is determined to be second-class ignition. The body type information includes at least one of height and weight, where the height in the second-class body type information is greater than that in the first-class body type information, and / or the weight in the second-class body type information is greater than that in the first-class body type information. Within the same time period, the gas flow rate provided by the gas generator 40 during first-class ignition is less than the gas flow rate provided by the gas generator 40 during second-class ignition.

[0068] Specifically, the airbag device 100 is located between the occupants and the side panels of the vehicle body. The multi-stage gas generator 40 includes a primary gas-generating component and a secondary gas-generating component. The multi-stage gas generator 40 is mounted on the seat. The Occupant Classification System (OCS) acquires the body shape information of the occupants. After a collision, if the occupant's body shape is identified as Class I by the OCS, the ignition level confirmed by the analysis is Primary Ignition. The multi-stage gas generator 40 receives the Primary Ignition signal, and only the Primary Gas-generating component begins to generate gas, which flows into the chest and abdominal protection section 132 through the vent 41. During the inflation process, the airflow from bottom to top causes the chest and abdominal protection section 132 to expand first and continue to expand upwards until the shoulder protection section 131 is fully inflated. During this process, because only the primary gas-generating component generates gas, the internal pressure of the chest and abdomen protection section 132 is relatively low, and the elastic connector 30 cannot fully open. The chest and abdomen area expands upward to a position 50mm below the dividing line 50, thereby achieving the effect of lifting the arms of smaller occupants upward when the vehicle's interior is compressed. In addition, after the thickness of the shoulder protection section 131 is limited, a slope is formed on the contact surface between the shoulder protection section 131 and the occupant's side, thereby guiding the occupant's arm to slide upward. Moreover, during the upward movement of the occupant's arm, it can be smoothly raised until it is lifted away from the area of ​​the first rib in the chest, thus improving the safety of the occupants after a collision.

[0069] Furthermore, after a vehicle collision, if the occupant's body type is identified as Class II by the Occupant Classification System (OCS), the ignition level is confirmed as Level II ignition. The multistage gas generator 40 receives the Level II ignition signal, and the primary and secondary gas generating components simultaneously begin to generate gas. This gas flows into the chest and abdomen protection section 132 through the gas outlet 41 of the multistage gas generator 40. During the inflation process, the airflow in the chest and abdomen protection section 132 moves from bottom to top, causing it to expand first and continue to expand upwards until the shoulder protection section 131 is fully inflated. During this process, due to the simultaneous gas generation by the primary and secondary gas generating components, the internal pressure of the chest and abdomen protection section 132 is relatively high, causing the elastic connector 30 to fully open. The area of ​​the chest and abdomen protection section 132 expands upwards to the dividing line 50, thereby achieving the effect of lifting the arms of larger occupants when the vehicle's interior is compressed. In addition, after the thickness of the shoulder protection part 131 is limited, a slope is formed on the contact surface between the shoulder protection part 131 and the driver / passenger side, thereby guiding the driver / passenger's arm to slide upward, and during the upward movement of the arm, it can be smoothly raised until it is lifted away from the first rib area of ​​the chest, thereby improving the safety of the driver / passenger after the vehicle is hit by a collision.

[0070] Specifically, obtaining the body shape information of drivers and passengers includes: obtaining the head position of drivers and passengers; and determining the body shape information of drivers and passengers based on the head position. When the vehicle is started, a video monitoring system, including an image acquisition module such as a camera, can be used to collect image information of the corresponding area inside the cabin. The system analyzes and identifies the user's body structure within the image information, such as head and shoulder positions, thereby achieving body shape recognition of the occupants inside the cabin. In a specific embodiment, the video monitoring system is installed at the A-pillar inside the cabin to collect and identify image data from the driver's seat, thereby identifying the driver's body shape information. It is also installed at the front dome light, the left rear dome light, and the right rear dome light, covering the front passenger seat and the rear cabin. This allows for the collection and identification of image data from the front passenger seat and the rear cabin, thereby identifying the body shape information of the occupants in these areas. Furthermore, the cameras in the video surveillance system can be IR+RGB type cameras, which can enhance the accuracy of image acquisition and recognition in low-light environments. This configuration can improve the accuracy of judging the body shape information of drivers and passengers, thereby improving the practicality and scientific nature of the airbag device 100.

[0071] Furthermore, obtaining the body shape information of drivers and passengers includes: obtaining the facial information of drivers and passengers; matching the facial information of drivers and passengers with information stored in the database to obtain matching information; and determining the body shape information of drivers and passengers based on the matching information. Specifically, the body shape information of commonly used drivers and passengers in the vehicle can be pre-recorded by the user in the database for facial information matching. When the in-vehicle video monitoring system obtains the facial information pre-stored in the database, it will also match the corresponding body shape information, improving the intelligence and convenience of the airbag device 100.

[0072] Specifically, the airbag device 100 can completely cover the shoulder, chest, abdomen and hip areas of the driver and passengers, and has a large coverage area in the shoulder area, which can prevent the shoulders of the driver and passengers from slipping off when the vehicle is involved in a side-angle collision, thereby further improving the safety of the driver and passengers.

[0073] According to a third aspect of the present invention, a vehicle includes the airbag device 100 described above, which is configured to improve the adaptive protection of the vehicle for the sides of occupants of different body types, thereby improving the safety and practicality of the vehicle.

[0074] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0075] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0076] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An airbag device, characterized in that, include: Airbag, the airbag comprising: The airbag body includes a first piece and a second piece, the edges of the first piece and the second piece are connected, the interior of the airbag body has an air cavity, and the airbag body is divided into a shoulder protection part and a chest and abdomen protection part in the vertical direction, with a dividing line between the shoulder protection part and the chest and abdomen protection part. A limiting member, connected between the first and second pieces corresponding to the shoulder protection portion, to limit the unfolded size of the shoulder protection portion towards the seat side; and An elastic connector is located below the half of the dividing line near the front end. The elastic connector is connected between the first piece and the second piece corresponding to the chest and abdomen protection to elastically limit the unfolding size of the chest and abdomen protection towards the seat side. Wherein, after the airbag is inflated, the unfolded size of the chest and abdomen protection part facing the seat side is greater than the unfolded size of the shoulder protection part facing the seat side.

2. The airbag device according to claim 1, characterized in that, In the vertical direction, the distance between the elastic connector and the dividing line is d, and d satisfies the relationship: 30mm≤d≤70mm.

3. The airbag device according to claim 2, characterized in that, The value is d=50mm.

4. The airbag device according to claim 1, characterized in that, The limiting member is located above the half of the dividing line near the front end.

5. The airbag device according to claim 4, characterized in that, The elastic connector is located below a line segment at a distance between 1 / 4 and 2 / 5 of the length of the dividing line from the front end of the dividing line.

6. The airbag device according to claim 5, characterized in that, On the dividing line, a reference position is set at a distance of 1 / 3 of the length of the dividing line from the front end of the dividing line, and the elastic connector is located below the reference position.

7. The airbag device according to claim 6, characterized in that, The limiting member is located above the reference position.

8. The airbag device according to claim 1, characterized in that, The limiting member has a first end and a second end, the first end being connected to the first piece and the second end being connected to the second piece.

9. The airbag device according to claim 1, characterized in that, The elastic connector has a first connecting end and a second connecting end, the first connecting end being connected to the first sheet body, and the second connecting end being connected to the second sheet body.

10. The airbag device according to claim 1, characterized in that, Also includes: A gas generator, wherein the gas generator is provided with a gas outlet, the gas outlet being connected to the chest and abdominal protective section.

11. The airbag device according to claim 10, characterized in that, The gas generator is a multi-stage gas generator.

12. The airbag device according to claim 1, characterized in that, The limiting member includes multiple members, which are arranged vertically.

13. The airbag device according to claim 1, characterized in that, The limiting component is either a suture or an elastic band.

14. The inflation control method for the airbag device according to any one of claims 1-13, characterized in that, Includes the following steps: Obtain the body shape information of drivers and passengers; Based on the body size information of the occupants, the ignition level of the gas generator is confirmed; The gas generator is ignited according to the ignition level.

15. The inflation control method for the airbag device according to claim 14, characterized in that, The step of determining the ignition level of the gas generator based on the body size information of the driver and passengers includes: When the occupant has a first-class body type, the ignition level of the gas generator is confirmed to be first-class ignition. When the occupant's body type is classified as Class II, the ignition level of the gas generator is confirmed to be Class II ignition. Wherein, both the first and second body type information include at least one of height and weight, the height in the second body type information is greater than the height in the first body type information, and / or the weight in the second body type information is greater than the weight in the first body type information; within the same time period, the gas flow rate provided by the gas generator during primary ignition is less than the gas flow rate provided by the gas generator during secondary ignition.

16. The inflation control method for the airbag device according to claim 14, characterized in that, The acquisition of the body shape information of drivers and passengers includes: Obtain the head position of the driver and passengers; The body type information of the driver and passenger is determined based on the head position of the driver and passenger.

17. The inflation control method for the airbag device according to claim 14, characterized in that, The acquisition of the body shape information of drivers and passengers includes: Obtain facial information of drivers and passengers; The facial information of the driver and passengers is matched with the information stored in the database to obtain matching information; Based on the matching information, the body type information of the driver and passengers is determined.

18. A vehicle, characterized in that, include: The airbag device according to any one of claims 1-13.

Images