Far-side airbag, far-side airbag device, and airbag sewing method

Abstract

Embodiments of the present description provide a far-side airbag, a far-side airbag device, and an airbag sewing method. The far-side airbag comprises a primary cavity and a secondary cavity; the primary cavity is provided with a non-inflated area and external tethers; one end of the secondary cavity is fixed to the primary cavity by means of a connecting section in which communicating holes are formed; when the far-side airbag is inflated and deployed, the primary cavity is bent in the non-inflated area under pulling force of the external tethers to form a first cavity and a second cavity which extend at an angle; the other end of the secondary cavity stretches away from the primary cavity, and forms an obtuse angle with the first cavity, such that the primary cavity and the secondary cavity abut against each other. When the far-side airbag is inflated and deployed, the primary cavity and the secondary cavity abut against each other, and when the primary cavity is impacted by an occupant, the secondary cavity can support the primary cavity, thereby preventing excessive displacement of the primary cavity, and ensuring the protective effect for the occupant.

Description

Distal airbag, distal airbag device and airbag sewing method Technical Field

[0001] This specification relates to the field of automobile safety technology, and in particular to a distal airbag, a distal airbag device, and an airbag sewing method. Background Art

[0002] The remote airbag is a passive safety system primarily designed to protect passengers in a vehicle collision. It's typically located inside the driver's seatback, featuring two large cavities for the head and chest. Upon deployment, the airbag quickly forms a cushion between the two seats, limiting the front passenger's head's swing and preventing collision with interior components. Current remote airbags are prone to significant deflection during impact, resulting in reduced protective effectiveness. Summary of the Invention

[0003] In view of this, the embodiments of the present specification provide a distal airbag, a distal airbag device and an airbag sewing method. When the distal airbag is inflated and deployed, the main cavity and the secondary cavity support each other. When the main cavity is hit by an occupant, the secondary cavity can support the main cavity to avoid large displacement of the main cavity and ensure the protection effect for the occupant.

[0004] The embodiments of this specification provide the following technical solutions: a distal airbag, comprising a main cavity and a secondary cavity, the main cavity being provided with a non-inflated area and an external drawstring, one end of the secondary cavity being fixed to the main cavity by a connecting section provided with a connecting hole, when the distal airbag is inflated and expanded, the external drawstring pulls the main cavity to bend in the non-inflated area to form a first cavity and a second cavity extending at angles to each other, the other end of the secondary cavity being expanded in a direction away from the main cavity, and forming an obtuse angle with the first cavity, so that the main cavity and the secondary cavity support each other.

[0005] Preferably, the main cavity includes a first panel and a second panel, and the edges of the first panel and the second panel are sewn by a first peripheral line to form the main cavity. The non-inflatable area extends along the front-to-rear direction of the vehicle and is configured to be formed by fixing the first panel and the second panel by gluing and / or sewing. The connecting section also includes a circumferential closed seam, which is configured to fix the panel of the secondary cavity and the second panel, and surround the connecting hole and the non-inflatable area.

[0006] Preferably, the sub-cavity includes a third panel, which is configured to be formed by folding the third panel in half and sewing it through a second peripheral line, and the circumferential closed seam is provided on a side panel at and / or near the fold.

[0007] Preferably, the connecting section includes at least two communicating holes, the arrangement direction of which is consistent with the extension direction of the non-inflated area and is arranged close to the second cavity.

[0008] Preferably, two groups of the external drawstrings are provided, and the two groups of the drawstrings are respectively provided on opposite sides of the main cavity.

[0009] A distal airbag device comprises a first gas generator and a distal airbag as described above, wherein the air outlet of the first gas generator is connected to the second cavity and is fixed together with the main cavity to the side of the first seat frame. The first gas generator is activated to deploy the distal airbag, and the second cavity is deployed toward the side of the chest area of ​​the first seat passenger. The first cavity is bent from the upper part of the second cavity and extends to the head and neck area of ​​the seat passenger, and the other end of the sub-cavity extends toward the head and neck area of ​​the passenger on the second seat arranged in the same row.

[0010] A distal airbag device comprises a second gas generator and a distal airbag as described above, wherein the air outlet of the second gas generator is connected to the second cavity and is fixed together with the main cavity to the side of the first seat frame. The second gas generator is activated to deploy the distal airbag, and the second cavity is deployed along the side of the chest or waist area of ​​the first seat passenger and between the center armrest box. The first cavity is bent from the upper part of the second cavity and extends to the other side of the center armrest box to cover the space between the passenger on the second seat arranged in the same row and the center armrest box. The other end of the sub-cavity extends to the head and neck area of ​​the occupant on the first seat.

[0011] Preferably, the portion of the second cavity below the vehicle center console is less than one-sixth of the height of the second cavity.

[0012] Preferably, the portion of the second cavity below the vehicle center console is greater than one-third of the height of the second cavity, and an internal pull strap is provided in the second cavity to control the unfolding thickness of the second cavity between the central armrest box and the occupant on the first seat.

[0013] An airbag sewing method, applied to the distal airbag described above, comprising:

[0014] connecting the second panel and a panel of the secondary chamber adjacent to the second panel by a circumferential sealing seam to form a connecting section;

[0015] Aligning the first panel and the second panel, and connecting the first panel and the second panel together within the projection range of the connecting section by gluing and / or sewing to form a non-inflatable area;

[0016] A hole is opened in the second panel and the panel of the sub-cavity close to the second panel, wherein the hole is located in the connecting section to form a communicating hole;

[0017] A main cavity is formed by sewing along the edges of the first panel and the second panel through a first peripheral line;

[0018] The main cavity is folded along the non-inflated area and the folded main cavity is connected by an external drawstring.

[0019] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:

[0020] By designing a distal airbag including a main cavity and a secondary cavity, and providing a non-inflated area and an external drawstring on the main cavity, when the distal airbag is inflated and deployed, under the traction of the external drawstring, the main cavity bends in the folding area to form a first cavity and a second cavity extending at an angle to each other, while the secondary cavity extends and deploys away from the main cavity, forming an obtuse angle between the secondary cavity and the first cavity, so that the main cavity and the secondary cavity support each other. The bent main cavity forms two supporting cavities, providing very stable support for the secondary cavity extending outward at the bend. When the main cavity is hit by an occupant, on the one hand, the reaction force of the secondary cavity and the other side seat and / or occupant can support the main cavity, preventing the main cavity from being greatly deflected and ensuring the protective effect for the occupant; on the other hand, the pushing action of the seat occupant on the main cavity provides support for the secondary cavity extending toward the head and neck of the seat occupant on the other side, preventing it from deflecting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] FIG1 is a schematic diagram of the structure of the distal airbag after deployment provided by the present application;

[0023] FIG2 is a schematic diagram of the internal structure of the distal airbag after deployment provided by the present application;

[0024] Figure 3 is an enlarged schematic diagram of point A in Figure 2;

[0025] FIG4 is a schematic diagram of the protection of the driver and passengers after the distal airbag is deployed provided by the present application;

[0026] FIG5 is a schematic structural diagram of each panel of the distal airbag provided by the present application;

[0027] FIG6 is a schematic diagram of the sewing process of each panel of the distal airbag provided by the present application;

[0028] FIG7 is a schematic structural diagram of the distal airbag in Example 2 provided by the present application when it is not deployed;

[0029] FIG8 is a schematic structural diagram of the distal airbag when deployed in Example 2 provided by the present application;

[0030] FIG9 is a schematic diagram of a case where the first cavity of the distal airbag is shorter in Example 2 provided by the present application;

[0031] FIG10 is a schematic diagram of Example 2 provided in the present application in which the first cavity of the distal airbag is longer.

[0032] In the figure, 1. main cavity; 11. first cavity; 12. second cavity; 13. first panel; 14. second panel; 2. sub-cavity; 21. third panel; 3. external drawstring; 4. connecting section; 41. circumferential closed suture; 5. non-inflated area; 51. sealing suture; 6. connecting hole; 7. first outer peripheral line; 8. second outer peripheral line. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0034] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0035] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0036] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0037] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0038] When a car collides, the distal airbag can protect the occupants. However, after the current distal airbag is deployed, when it is hit by a large force, the distal airbag is prone to deviation, resulting in poor protection for the occupants.

[0039] The inventors have designed a distal airbag after extensive and in-depth experiments.

[0040] The technical problem solved by the present invention is: how to further improve the protection effect on occupants.

[0041] More specifically, the solution adopted by the present invention includes: by designing a distal airbag including a main cavity and a sub-cavity, and by arranging a non-inflated area and an external pull strap on the main cavity, when the distal airbag is inflated and deployed, under the traction of the external pull strap, the main cavity is bent in the folding area to form a first cavity and a second cavity extending at an angle to each other, and at the same time the sub-cavity extends and deploys in a direction away from the main cavity, forming an obtuse angle between the sub-cavity and the first cavity, so that the main cavity and the sub-cavity support each other, and when the main cavity is hit by an occupant, the sub-cavity can support the main cavity to avoid a large displacement of the main cavity, thereby ensuring the protection effect for the occupant.

[0042] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0043] As shown in Figures 1 to 4, a distal airbag includes a main cavity 1 and a secondary cavity 2. The main cavity 1 is provided with a non-inflated area 5 and an external drawstring 3. One end of the secondary cavity 2 is fixed to the main cavity 1 through a connecting section 4 provided with a connecting hole 6. When the distal airbag is inflated and expanded, the external drawstring 3 pulls the main cavity 1 to bend in the non-inflated area 5 to form a first cavity 11 and a second cavity 12 extending at angles to each other. The other end of the secondary cavity 2 expands in a direction away from the main cavity 1 and forms an obtuse angle with the first cavity 11, so that the main cavity 1 and the secondary cavity 2 support each other.

[0044] By arranging an external drawstring 3 on the main cavity 1, when the main cavity 1 is inflated and expanded, the two ends of the external drawstring 3 respectively pull different parts of the main cavity 1, causing the main cavity 1 to bend. By arranging a non-inflated area 5 on the main cavity 1, due to the existence of the non-inflated area 5, the main cavity 1 can bend along the non-inflated area 5, which is convenient for the bending of the main cavity 1 after expansion. At the same time, the gas in the main cavity 1 will enter the secondary cavity 2 through the connecting hole 6, and the secondary cavity 2 will extend and expand in the direction away from the main cavity 1. After expansion, an obtuse angle is formed between the secondary cavity 2 and the first cavity 11, so that the main cavity 1 and the secondary cavity 2 support each other. When the main cavity 1 is hit, on the one hand, the reaction force of the secondary cavity 2 and the seat and / or occupant on the other side can support the main cavity 1, avoiding a large deviation of the main cavity 1 and ensuring the protection effect for the occupant; on the other hand, the pushing action of the seat occupant on the main cavity 1 provides support for the secondary cavity 2 extending toward the head and neck of the seat occupant on the other side, preventing it from deflecting, thereby ensuring the protection effect of the main cavity 1 on the occupant.

[0045] It should be noted that, under the traction of the external pull strap 3, the first cavity 11 and the second cavity 12 are bent along the non-inflated area 5 to form an acute angle, and a triangular structure is formed between the first cavity 11, the second cavity 12 and the external pull strap 3, which can ensure the stability of the main cavity 1, and the side of the bent part of the main cavity 1 close to the sub-cavity 2 will be relatively firm. The sub-cavity 2 is connected to the bent part of the main cavity 1, which can ensure the supporting effect on the main cavity 1, and the sub-cavity 2 extends in the opposite direction of the acute angle, and forms an obtuse angle with the first cavity 11. A Y-shaped structure is formed between the sub-cavity 2, the first cavity 11 and the second cavity 12, so that the sub-cavity 2 has a better supporting effect on the main cavity 1.

[0046] It should also be noted that when the main cavity 1 is hit by an occupant, if the impact force is less than the supporting force of the secondary cavity 2 on the main cavity 1, the main cavity 1 will not move. If the impact force is greater than the supporting force of the secondary cavity 2 on the main cavity 1, the main cavity 1 will drive the secondary cavity 2 to move. During the movement, the impact force of the occupant can be reduced. When the secondary cavity 2 contacts other objects (such as the passenger seat), the secondary cavity 2 will no longer move. The secondary cavity 2 further supports the main cavity 1, thereby further protecting the occupant, so that the distal airbag can still achieve good protection for the occupant under the condition of large impact force. At the same time, when the secondary cavity 2 contacts other objects and no longer moves, due to the obtuse angle between the secondary cavity 2 and the first cavity 11, the obtuse angle will change with the lateral movement of the occupant, absorbing energy and slowing down the lateral movement of the occupant, thereby protecting the occupant.

[0047] As shown in Figures 1 to 6, in some embodiments, the main cavity 1 includes a first panel 13 and a second panel 14, and the edges of the first panel 13 and the second panel 14 are sewn by a first peripheral line 7 to form the main cavity 1, and the non-inflatable area 5 extends along the front and rear directions of the vehicle and is configured to be fixed by gluing and / or sewing. The first panel 13 and the second panel 14 are formed, and the connecting section 4 also includes a circumferential closed seam 41, which is configured to fix the panel of the secondary cavity 2 and the second panel 14, and surround the communicating hole 6 and the non-inflatable area 5. The main cavity 1 is formed by sewing the edges of the first panel 13 and the second panel 14 with the first peripheral line 7. cavity 1, and the non-inflatable area 5 extends along the front-to-back direction of the vehicle (i.e., the width direction of the main cavity 1), which is convenient for the main cavity 1 to be folded along the width direction, ensuring the length of the first cavity 11 and the second cavity 12, thereby ensuring the comprehensive protection effect for the occupant, and the panel of the secondary cavity 2 and the second panel 14 are connected by the circumferential closed seam 41 to form a connecting section 4, realizing the connection between the secondary cavity 2 and the main cavity 1, and at the same time, the communicating hole 6 and the non-inflatable area 5 are both arranged in the area formed by the connecting section 4, ensuring that the gas in the main cavity 1 can enter the secondary cavity 2 through the communicating hole 6, and when the main cavity 1 is bent along the non-inflatable area 5, the bent part is directly connected to the secondary cavity 2, ensuring the supporting effect of the secondary cavity 2 on the main cavity 1.

[0048] It should be noted that, in general, the non-inflatable area 5 can be formed by a sealing seam 51, that is, a closed area is sewn by the sealing seam 51. In other embodiments, it can also be formed by gluing or other methods, as long as it is difficult for gas to enter or can only enter the area in a relatively slow manner.

[0049] It should also be noted that the first panel 13 and the second panel 14 can be formed by folding a whole large panel in half, or can be two independent panels, and the choice can be made according to actual conditions.

[0050] As shown in Figures 1 to 6, in some embodiments, the sub-cavity 2 includes a third panel 21, which is configured to be formed by folding the third panel 21 in half and sewing it through a second peripheral line 8. The circumferential closing stitches 41 are arranged on a side panel at the fold and / or near the fold. The sub-cavity 2 is formed by folding the third panel 21 in half and then sewing the edge with the second peripheral line 8. The circumferential closing stitches 41 are on a side panel at the fold and / or near the fold of the third panel 21. When the distal airbag is deployed, the edge and / or near the edge of the sub-cavity 2 are connected to the bending part of the main cavity 1 to ensure the supporting effect of the sub-cavity 2 on the main cavity 1.

[0051] It should be noted that the auxiliary cavity 2 can be formed by folding a whole panel in half and then sewing it through the second outer peripheral line 8, or by sewing two independent panels. The choice can be made according to actual conditions.

[0052] As shown in Figures 1 to 6, in some embodiments, the connecting section 4 includes at least two connecting holes 6, the arrangement direction of which is consistent with the extension direction of the non-inflatable area 5 and is arranged close to the second cavity 12. By providing at least two connecting holes 6 in the connecting section 4, it can be ensured that the gas in the main cavity 1 quickly enters the sub-cavity 2, thereby ensuring the expansion speed of the sub-cavity 2. The arrangement direction of the connecting holes 6 is consistent with the extension direction of the non-inflatable area 5 (that is, the width direction of the main cavity 1). The gas can enter the sub-cavity 2 from multiple parts, which facilitates the gas to enter the sub-cavity 2, thereby ensuring that the sub-cavity 2 can be quickly expanded.

[0053] It should be noted that when the second cavity 12 is connected to the gas generator, in this case, the second cavity 12 will expand earlier than the first cavity 11, and the connecting hole 6 is arranged below the non-inflatable area 5. When the gas generated by the gas generator enters the second cavity 12, it can enter the sub-cavity 2 through the connecting hole 6, ensuring that the sub-cavity 2 can expand quickly; when the first cavity 11 is connected to the gas generator, the connecting hole 6 is arranged above the non-inflatable area 5 to ensure the expansion speed of the sub-cavity 2.

[0054] It should also be noted that the number of connecting holes 6 can be more than two, and the number of connecting holes 6 can be set according to the size of the connecting holes 6. When there are multiple connecting holes 6, the multiple connecting holes 6 are distributed along the width direction of the main cavity 1.

[0055] As shown in Figures 1 to 6, in some embodiments, two groups of external drawstrings 3 are provided, and the two groups of drawstrings are respectively provided on opposite sides of the main cavity 1. By providing two groups of external drawstrings 3, the two groups of drawstrings are respectively provided on opposite sides of the main cavity 1, and the two groups of drawstrings respectively pull the two sides of the first cavity 11 and the second cavity 12 to ensure the bending effect of the main cavity 1. At the same time, the drawstrings are provided at the edge of the main cavity 1 to avoid contact between the occupants and the drawstrings, thereby ensuring the protective effect of the main cavity 1 on the occupants. When the first cavity 11 and / or the second cavity 12 is hit by a member, since drawstrings are provided on both sides of the first cavity 11 and the second cavity 12 for traction, the stability of the first cavity 11 and the second cavity 12 can be further ensured, thereby further ensuring the protective effect on the members.

[0056] It should be noted that the bending angles of the first cavity 11 and the second cavity 12 can be adjusted by changing the length of the drawstring or the sewing position of the drawstring, and can be set according to actual conditions.

[0057] It should also be noted that the number of drawstrings can be three groups, four groups or other numbers. When three groups of drawstrings are provided, one group of drawstrings can be provided between the first cavity 11 and the second cavity 12. When four groups of drawstrings are provided, two groups of drawstrings can be provided on both sides of the first cavity 11 and the second cavity 12. The remaining number can be set according to actual conditions. Example

[0058] As shown in Figures 1 to 6, based on the same inventive concept, an embodiment of this specification provides a distal airbag device, including a first gas generator and a distal airbag as described in any one of the above items, the air outlet of the first gas generator is connected to the second cavity 12, and is fixed together with the main cavity 1 on the side of the first seat frame. When the first gas generator is started to deploy the distal airbag, the second cavity 12 is deployed toward the side of the chest area of ​​the passenger of the first seat (driver's seat), the first cavity 11 is bent from the upper part of the second cavity 12 and extends to the head and neck area of ​​the seat passenger, and the other end of the sub-cavity 2 extends toward the head and neck area of ​​the passenger on the second seat (passenger seat) arranged in the same row.

[0059] During implementation, when the vehicle is hit from the distal side (the passenger side is hit), the first gas generator starts to inflate the main chamber 1, and the main chamber 1 is expanded. The gas in the second chamber 12 enters the sub-chamber 2 through the connecting hole 6, causing the sub-chamber 2 to expand. When the main chamber 1 is expanded, the two ends of the external pull strap 3 respectively pull different parts of the main chamber 1, causing the main chamber 1 to bend along the non-inflated area 5. At this time, the first chamber 11 corresponds to the head and neck of the occupant, and the second chamber 12 corresponds to the chest area of ​​the occupant. When the occupant moves laterally, the first chamber 11 can well restrain and protect the occupant's head and neck. As the occupant moves laterally, when the sub-chamber 2 contacts the passenger seat and / or the passenger, the sub-chamber 2 provides support to the main chamber 1, thereby further protecting the occupant, so that the distal airbag can still achieve good protection for the occupant even when the impact force is large.

[0060] It should be noted that, during a near-end collision, due to the expansion of the auxiliary cavity 2, it can come into contact with the occupant on the passenger seat earlier, thereby reducing occupant injury. Due to the existence of the auxiliary cavity 2, after the passenger's head comes into contact with the auxiliary cavity 2, the auxiliary cavity 2 can act as a buffer. At the same time, the auxiliary cavity 2 is higher than the height of the main cavity 1. When the passenger is taller, the auxiliary cavity 2 can play a good protective role. The auxiliary cavity 2 can make up for the problem of insufficient protection area in the upper part of the main cavity 1, thereby achieving better protection for the passenger. Example

[0061] As shown in Figures 7 and 8, based on the same inventive concept, an embodiment of this specification provides a distal airbag device, including a second gas generator and a distal airbag as described in any one of the above items, the outlet of the second gas generator is connected to the second cavity 12, and is fixed together with the main cavity 1 on the side of the first seat frame. The second gas generator is activated to cause the distal airbag to unfold, and the second cavity 12 is unfolded along the side of the chest or waist area of ​​the passenger of the first seat and between the central armrest box. The first cavity 11 is bent from the upper part of the second cavity 12 to extend to the other side of the central armrest box to cover the space between the passenger on the second seat arranged in the same row and the central armrest box. The other end of the sub-cavity 2 extends to the head and neck area of ​​the occupant on the first seat.

[0062] During implementation, when a shorter passenger sits on the front passenger seat and the vehicle is hit from the side (the driver's side is hit), the second gas generator starts to inflate the main chamber 1, and the main chamber 1 expands. The second chamber 12 and the auxiliary chamber 2 both expand in the direction close to the main driver's seat. The second chamber 12 protects the body part of the main driver, and the first chamber 11 expands in the direction close to the front passenger seat. The second chamber 12 covers the vehicle's central control and the front passenger, and can provide protection between the front passenger and the vehicle's central control, preventing the front passenger's head from colliding with the vehicle's central control, thereby ensuring the protection effect for the front passenger.

[0063] It should be noted that, with the above installation method, when the passenger side of the vehicle is hit, the secondary cavity 2 can protect the head and neck of the main driver and the second cavity 12 can protect the body of the main driver and the passenger.

[0064] In a side impact (driver's side), the driver will inevitably be moved laterally toward the center console as the vehicle body intrudes on the driver's side and the seat-mounted airbag near the door deploys. At this time, the distal airbag also deploys. If the lower end of the distal airbag has a large overlap with the center console (the part of the airbag that is lower than the center console surface) and is relatively thick, it will push back on the driver, potentially causing reverse injury. To address this issue, the following two solutions can be adopted:

[0065] 1. As shown in FIG9 , the portion of the second cavity 12 below the vehicle center console is less than one-sixth of the height of the second cavity 12 . By setting the portion of the second cavity 12 below the vehicle center console to be less than one-sixth of the height of the second cavity 12 , there is less second cavity 12 between the driver and the vehicle center console. Even if there is a certain interference contact with the center console, it will be easily squeezed away when in contact with the driver, and will not cause harm to the driver.

[0066] 2. As shown in Figure 10, the portion of the second cavity 12 below the vehicle center console is greater than one-third of the height of the second cavity 12. An internal drawstring is provided in the second cavity 12 to control the unfolded thickness of the second cavity 12 between the center armrest box and the occupant on the first seat. When the interference between the second cavity 12 and the vehicle center console is greater than one-third of the height of the second cavity 12, it is difficult for the main driver and passenger to squeeze the second cavity 12 open. An internal drawstring can be provided inside the second cavity 12. Due to the presence of the internal drawstring, the thickness of the second cavity 12 after unfolding can be limited to leave sufficient spacing between the main driver and passenger and the second cavity 12, thereby leaving sufficient space for the main driver and passenger to move their body parts and reduce injuries to the occupants.

[0067] Based on the same inventive concept, an embodiment of this specification provides an airbag sewing method, which is applied to the distal airbag described above, comprising:

[0068] Referring to FIG6 , the second panel 14 and the panel of the secondary cavity 2 close to the second panel 14 are connected together by a circumferential closed seam 41 to form a connecting section 4. The seam position is approximately at the upper part of the second panel 14 and the middle part of the panel of the secondary cavity 2. The connection between the second panel 14 and the secondary cavity 2 is achieved through the connecting section 4.

[0069] Align the first panel 13 and the second panel 14, and connect the first panel 13 and the second panel 14 together within the projection range of the connecting section 4 by gluing and / or sewing (the first panel 13, the second panel 14 and the panel of the secondary cavity 2 can also be sewn together at the same time), forming a non-inflatable area 5 between the first panel 13 and the second panel 14. The non-inflatable area 5 extends along the width direction of the first panel 13 and the second panel 14, thereby facilitating the upper part of the main cavity 1 to bend again;

[0070] Holes are opened on the second panel 14 and the panel of the secondary chamber 2 close to the second panel 14. The openings are located in the connecting section 4 to form a connecting hole 6. By opening holes on the second panel 14 and the panel of the secondary chamber 2, the main chamber 1 and the secondary chamber 2 can be connected. The number and size of the holes can be adjusted according to actual conditions, ensuring that the openings are located in the connecting section 4 and do not overlap with the non-inflated area.

[0071] The main cavity 1 is formed by sewing along the edges of the first panel 13 and the second panel 14 through the first peripheral line 7. If the secondary cavity 2 is a third panel 21, the third panel 21 is folded in half and sewn along the edge through the second peripheral line 8. If the secondary cavity 2 is two panels, the two panels are overlapped and sewn along the edge through the second peripheral line 8.

[0072] The main cavity 1 is folded along the non-inflated area 5, and the folded main cavity 1 is connected by an external drawstring 3. After the main cavity 1 is folded along the non-inflated area 5, a drawstring is set on both sides of the main cavity 1, and the two ends of the drawstring are respectively connected to the two parts of the bent main cavity 1. The ends of the drawstring can be sewn respectively at the edge contours of the two parts of the main cavity 1.

[0073] The same or similar parts between the various embodiments in this specification can be referred to in detail. Each embodiment focuses on the differences from other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is relatively simple. For relevant parts, please refer to the partial description of the system embodiment.

[0074] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A distal airbag, characterized in that: It includes a main cavity and a sub-cavity, the main cavity is provided with a non-inflated area and an external drawstring, one end of the sub-cavity is fixed to the main cavity by a connecting section provided with a communicating hole, when the distal airbag is inflated and expanded, the external drawstring pulls the main cavity to bend in the non-inflated area to form a first cavity and a second cavity extending at an angle to each other, the other end of the sub-cavity expands in a direction away from the main cavity, and forms an obtuse angle with the first cavity, so that the main cavity and the sub-cavity support each other.

2. The distal airbag according to claim 1, characterized in that: The main cavity includes a first panel and a second panel, and the edges of the first panel and the second panel are sewn together by a first outer peripheral line to form the main cavity. The non-inflatable area extends in the front-to-rear direction of the vehicle and is configured to be formed by fixing the first panel and the second panel by gluing and / or sewing. The connecting section also includes a circumferential closed seam, which is configured to fix the panel of the secondary cavity and the second panel and surround the communicating hole and the non-inflatable area.

3. The distal airbag according to claim 2, characterized in that: The secondary cavity includes a third panel, which is configured to be formed by folding the third panel in half and sewing it through a second peripheral line. The circumferential closed seam is provided on the folded portion and / or on a side panel near the folded portion.

4. The distal airbag according to claim 3, characterized in that: The connecting section includes at least two communicating holes, the arrangement direction of which is consistent with the extension direction of the non-inflated area and is arranged close to the second cavity.

5. The distal airbag according to any one of claims 1 to 4, characterized in that: Two groups of external drawstrings are provided, and the two groups of drawstrings are respectively provided on opposite sides of the main cavity.

6. A distal airbag device, characterized in that: It includes a first gas generator and a distal airbag as described in any one of claims 1 to 5, the outlet of the first gas generator is connected to the second cavity, and is fixed together with the main cavity to the side of the first seat frame. The first gas generator is activated to deploy the distal airbag, and the second cavity is deployed toward the side of the chest area of ​​the first seat passenger. The first cavity is bent from the upper part of the second cavity and extends to the head and neck area of ​​the seat passenger, and the other end of the sub-cavity extends to the head and neck area of ​​the passenger on the second seat arranged in the same row.

7. A distal airbag device, characterized in that: It includes a second gas generator and a distal airbag as described in any one of claims 1 to 5, the outlet of the second gas generator is connected to the second cavity, and is fixed together with the main cavity to the side of the first seat frame. The second gas generator is activated to deploy the distal airbag, and the second cavity is deployed along the side of the chest or waist area of ​​the first seat passenger and between the center armrest box. The first cavity is bent from the upper part of the second cavity and extends to the other side of the center armrest box to cover the space between the passenger on the second seat arranged in the same row and the center armrest box. The other end of the sub-cavity extends to the head and neck area of ​​the occupant on the first seat.

8. The distal airbag device according to claim 7, characterized in that: The portion of the second cavity below the vehicle center console is less than one-sixth of the height of the second cavity.

9. The distal airbag device according to claim 7, characterized in that: The portion of the second cavity below the vehicle center console is greater than one-third of the height of the second cavity, and an internal pull strap is provided in the second cavity to control the unfolding thickness of the second cavity between the central armrest box and the occupant on the first seat.

10. An airbag sewing method, applied to the distal airbag according to any one of claims 2 to 5, comprising: connecting the second panel and a panel of the secondary chamber adjacent to the second panel by a circumferential sealing seam to form a connecting section; Aligning the first panel and the second panel, and connecting the first panel and the second panel together within the projection range of the connecting section by gluing and / or sewing to form a non-inflatable area; A hole is opened in the second panel and the panel of the sub-cavity close to the second panel, wherein the hole is located in the connecting section to form a communicating hole; A main cavity is formed by sewing along the edges of the first panel and the second panel through a first peripheral line; The main cavity is folded along the non-inflated area and the folded main cavity is connected by an external drawstring.

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