A fully enclosed airbag and its car seat

Abstract

This invention discloses a fully enclosed airbag and its automotive seat, comprising a connected airbag structure and a gas generator. The airbag structure includes an inflatable bag I, an inflatable bag II, and a connecting inflatable bag for connecting the two. The outer end of inflatable bag I is provided with a positioning airbag strap I, and the outer end of inflatable bag II is provided with a positioning airbag strap II. The fully enclosed airbag is arranged along both sides and the top of the backrest frame. Inflatable bags I and II are located on both sides of the backrest frame, and the two inflatable bags are connected to the backrest frame via corresponding airbag straps. When the passenger adjusts the seat back angle, the fully enclosed airbag adjusts simultaneously with the backrest angle. Therefore, the airbag protection area adjusts synchronously with the backrest angle, effectively protecting occupants in a reclining position with a large backrest angle.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and in particular to a fully enclosed safety airbag and its automotive seat. Background Technology

[0002] As autonomous driving enters the L2+ / L3 stage, the interior cabin will be fully upgraded to a mobile "third space," with increasingly rich comfort and intelligent features such as zero-gravity seats. However, the zero-gravity seats in existing market models are all equipped with traditional airbags (DAB, PAB, SAB, CAB). There is currently no solution on the market for how to effectively protect occupants in a reclining position. A new concept of airbag products is needed to effectively protect occupants in a zero-gravity sitting position.

[0003] For example, Chinese patent CN114435295A discloses a fully enclosed airbag installed on a seat back, including an airbag and gas generators. The airbag has a symmetrical structure with two air intake channels symmetrically arranged on both sides of the rear end of the airbag. There are two gas generators, which are symmetrically fixed in the two air intake channels. A non-inflatable area is sewn in the middle of the airbag near the rear end, and two side head protection zones and two side chest and abdomen protection zones are symmetrically arranged on both sides of the non-inflatable area. The side head protection zones are adjacent to the non-inflatable area, and the side chest and abdomen protection zones are located outside the side head protection zones. The side head protection zones and side chest and abdomen protection zones are connected to the corresponding air intake channels. An anterior chest and abdomen protection zone is located in the middle of the airbag near the front end, and the front ends of the two side head protection zones are connected to the anterior chest and abdomen protection zone. There are symmetrical pull straps on both sides of the anterior chest and abdomen protection zone on the airbag. The structure is complex and it is difficult to effectively protect occupants in a zero-gravity sitting position. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fully enclosed safety airbag and its associated car seat, which can effectively protect occupants in a reclining position with a large backrest angle and zero gravity.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A fully enclosed airbag includes a connected airbag structure and a gas generator. The airbag structure includes an inflatable bag I, an inflatable bag II, and a connecting inflatable bag for connecting the inflatable bag I and the inflatable bag II. The outer end of the inflatable bag I is provided with an airbag strap I for positioning, and the outer end of the inflatable bag II is provided with an airbag strap II for positioning.

[0007] The airbag straps I and II are fixed to both sides of the seat frame. The airbags I and II form a side inflation area for side protection, and the airbags together form a buffer protection area for chest protection.

[0008] The generator includes generator I and generator II, with generator I located on inflatable bag I and generator II located on inflatable bag II.

[0009] The airbag strap I, airbag I, connecting airbag, airbag II, and airbag strap II are all deformable flexible material structures, which sequentially form a linear airbag assembly.

[0010] The dimensions of both the inflatable bag I and the inflatable bag II are larger than those of the connected inflatable bag.

[0011] Both air bag strap I and air bag strap II have an air bag fixing structure at their outer ends.

[0012] The generator is integrated into the inflatable bag, and a generator fixing structure is provided on the generator.

[0013] The air bag strap is an elastic strap.

[0014] A car seat includes a seat frame, the seat frame including a seat cushion frame and a backrest frame, and also includes a fully enclosed airbag. The fully enclosed airbag is arranged along both sides and the top of the backrest frame. Inflatable bag I and inflatable bag II are located on both sides of the backrest frame, and the two inflatable bags are connected to the backrest frame by corresponding airbag straps.

[0015] The air bags I and II are staggered vertically, with the lower end of the air bag strap connected to the lower end of the air bag and the upper end of the air bag strap connected to the upper part of the backrest frame.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The fully enclosed airbag and its associated car seat structure are rationally designed. The fully enclosed airbag assembly is fixed to the seat frame. When the passenger adjusts the seat back angle, the fully enclosed airbag will adjust simultaneously with the backrest angle. Therefore, the protection area of ​​this airbag adjusts synchronously with the backrest angle, enabling protection of the occupant's head and chest at any angle of the seat back. It can meet the protection requirements of various collision conditions, including frontal collisions, side collisions, far-end collisions, and small offset collisions. It can effectively protect occupants in a zero-gravity reclining position with a large backrest angle. Attached Figure Description

[0018] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0019] Figure 1 This is a schematic diagram of the airbag assembly of the present invention.

[0020] Figure 2 This is a front view of the airbag of the present invention assembled on the seat frame.

[0021] Figure 3 This is a side view of the airbag of the present invention assembled on the seat frame.

[0022] Figure 4 This is another side view of the airbag of the present invention assembled on the seat frame.

[0023] Figure 5 This is a rear view of the airbag of the present invention assembled in the seat frame.

[0024] Figure 6 This is a left-side view of the fully enclosed airbag of the present invention when deployed.

[0025] Figure 7 This is a front view of the fully enclosed airbag of the present invention deployed.

[0026] Figure 8 This is a right-side view of the fully enclosed airbag of the present invention when deployed.

[0027] In the picture:

[0028] 1. Fully enclosed airbag assembly; 10. Airbag fixing point I; 20. Airbag strap I; 30. Inflation area I; 31. Inflation bag I; 32. Generator I fixing point; 33. Generator I; 40. Inflation area II; 50. Inflation area III; 51. Inflation bag II; 52. Generator II; 53. Generator II fixing point; 60. Airbag strap II; 70. Airbag fixing point II. Detailed Implementation

[0029] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0030] like Figures 1 to 8 As shown, the fully enclosed airbag includes a connected airbag structure and a gas generator; the airbag structure includes an inflatable bag I 31, an inflatable bag II 51, and a connecting inflatable bag for connecting the inflatable bag I and the inflatable bag II, the connecting inflatable bag being disposed between the inflatable bag I and the inflatable bag II, the outer end of the inflatable bag I being provided with an airbag pull strap I 20 for positioning, and the outer end of the inflatable bag II being provided with an airbag pull strap II 60 for positioning.

[0031] Airbag strap I, airbag I, connecting airbag, airbag II, and airbag strap II are all made of deformable flexible materials, such as traditional non-woven fabric. Airbag strap I, airbag I, connecting airbag, airbag II, and airbag strap II are connected in sequence to form a linear, fully enclosed airbag assembly 1, which is compact and easy to deploy.

[0032] The fully enclosed airbag assembly 1 is arranged on the seat frame, with airbag I 31 and airbag II 51 located on both sides of the seat frame respectively; the end of airbag I is positioned by airbag strap I, and the end of airbag strap I is fixed to the seat frame by airbag fixing point I 10, the end of airbag II is positioned by airbag strap II, and the end of airbag strap II is fixed to the seat frame by airbag fixing point II 70.

[0033] The present invention provides a fully enclosed airbag assembly installed inside the seat. In the event of a collision, the airbag inflates, securing the person to the seat at a large backrest angle and in a zero-gravity reclining position, forming a buffer zone to protect the occupant.

[0034] The generator includes generator I 33 and generator II 52. Generator I is located on airbag I, and generator II is located on airbag II. The generators are integrated, compact in structure, occupy little space, and are easy to arrange and install. Airbag straps I 20 and II 60 are fixed to both sides of the seat frame. The two airbag straps are equivalent to airbag cables, which can restrict the two airbags after inflation. There is no direct fixed connection between the connecting airbag and the seat frame. The connecting airbag is driven to the set area by the inflated airbag. Airbag I and airbag II form the side inflation area for side protection, and the connecting airbag forms the buffer protection area for chest protection.

[0035] The fully enclosed airbag of this invention mainly consists of a generator and an airbag, which is installed on the seat back and enclosed by seat foam. The airbag cavity is mainly composed of three parts, corresponding to the occupant's head inflation area I30 in the event of a side collision, the occupant's head and chest inflation area II40 in the event of a frontal collision, and the inflation area III50 is designed to tear the seat foam to ensure that the strap can be ejected normally, while also taking into account the occupant protection effect in the event of a far-end collision.

[0036] Both airbag I and airbag II are larger than the size of the connecting airbag. Airbag I and airbag II are located on both sides to form a larger side protection area. The connecting airbag is relatively small, which makes it easier for the two airbags to be inflated and move to the chest area to form a complete full-coverage protection. It can effectively protect occupants in a zero-gravity reclining position with a large backrest angle.

[0037] Both airbag strap I and airbag strap II have airbag fixing structures at their outer ends; the pneumatic fixing structures can use traditional fixing plates or fixing rings, which are convenient to connect to the seat frame; the airbag straps are elastic straps, which can improve the cushioning effect and prevent occupants from being injured.

[0038] The generator is integrated on the air bag and has a generator fixing structure; specifically, generator I is integrated on air bag I and positioned by generator I fixing point 32, and generator II is integrated on air bag II and positioned by generator II fixing point 53; the integrated installation results in a compact structure.

[0039] like Figures 2 to 5 As shown, the present invention provides a car seat, including a seat frame and the aforementioned fully enclosed airbag assembly. The seat frame includes an associated seat cushion frame and a backrest frame. The fully enclosed airbag is arranged along both sides and the top of the backrest frame. Inflatable bag I and inflatable bag II are located on both sides of the backrest frame, and the two inflatable bags are connected to the backrest frame by corresponding airbag straps. The connecting inflatable bag between inflatable bag I and inflatable bag II is located at the top of the backrest frame.

[0040] The airbags I and II are staggered vertically; specifically, airbag I is located on the upper left side and airbag II is located on the middle right side, both integrated into the seat foam. The inflatable area I formed by airbag I after inflation can protect the sides and head.

[0041] The lower end of the airbag strap is connected to the lower end of the airbag, and the upper end of the airbag strap is connected to the upper part of the backrest frame. Specifically, both airbag I and airbag II are initially set vertically. The upper ends of airbag I and airbag II are connected by a connecting airbag, and the lower end of airbag I is connected to the lower end of airbag strap I. Figure 5 The airbag strap I shown is reversed, meaning the other end of airbag strap I faces upwards. The upper end of airbag strap I is connected to the upper part of the backrest frame via airbag fixing point I; the lower end of airbag II is connected to the lower end of airbag strap II, as shown. Figure 5 The airbag strap II shown is reversed, meaning that the other end of the airbag strap II is facing upwards. The upper end of the airbag strap II is connected to the upper part of the backrest frame through the airbag fixing point II. This special structure allows the airbag I and airbag II to be inflated, which in turn moves the connected airbag to the chest, providing cushioning and protection for the chest through the inflated connected airbag.

[0042] The preferred embodiment of the present invention is as follows:

[0043] Figure 1 The image shows a fully enclosed airbag assembly 1, which mainly consists of airbag fixing point I, airbag strap I, generator I, inflation area I, generator I fixing point, inflation area II, inflation area III, generator II, generator II fixing point, airbag strap II, and airbag fixing point II. Figure 2 The image shows a front view of a fully enclosed airbag assembled on a seat frame, with the airbag-related structures arranged on the seat frame and the generator fixed to the side of the seat frame by screws. Figure 3 and Figure 4The image shows a side view of a fully enclosed airbag installed on the seat frame. Figure 5 The image shows a rear view of a fully enclosed airbag mounted on a seat frame. Airbag fixing points I and II are fixed to the sheet metal of the seat frame.

[0044] In the event of a frontal collision, the airbag controller issues an ignition command. Upon receiving this command, the generator produces a large amount of gas to rapidly inflate airbag inflation zones I and III. Inflation zone II is sewn together with inflation zones I and III, forming a unified system. The gas from the generator first enters inflation zones I and III, while simultaneously rapidly filling inflation zone II. As inflation zone I unfolds, it causes the pull strap I to move along with it. Pull strap I is secured to the seat frame by airbag fixing point I. When the pull strap I reaches its limit, it will tighten the inflation zone I. At the same time, when the inflation zone III unfolds, it will also cause the pull strap II to fly out of the seat foam. The pull strap II is fixed to the seat frame by the air bag fixing point II. When the pull strap II reaches its limit, it will tighten the inflation zone III. The inflation zone II is connected with the inflation zone I and the inflation zone III as a whole. The air quickly fills the space and reaches the occupant's head and chest, forming a buffer cavity to protect the occupant in zero gravity or at a large angle of the seat back.

[0045] In the event of a side collision, the occupants move to the side of the vehicle. Airbag inflation zone I inflates rapidly, preventing the occupants' heads from directly impacting the vehicle's interior and protecting their heads from injury. In the event of a long-range collision, the occupants move inwards. Airbag inflation zone III inflates rapidly, protecting the occupants inside the vehicle from head-on collisions and preventing injury.

[0046] The full-coverage airbag assembly is fixed to the seat frame. When the passenger adjusts the seat back angle, the full-coverage airbag will adjust simultaneously with the backrest angle. Therefore, the protection area of ​​this airbag adjusts synchronously with the backrest angle, which can protect the occupant's head and chest at any angle of the seat back. It can meet the protection requirements of occupants in various collision conditions such as frontal collision, side collision, far-end collision, and small offset collision.

[0047] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0048] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A car seat, comprising a seat frame and a fully enclosed airbag, wherein the seat frame includes a seat cushion frame and a backrest frame, characterized in that: The fully enclosed airbag includes a connected airbag structure and a gas generator. The airbag structure includes an inflatable bag I, an inflatable bag II, and a connecting inflatable bag for connecting the inflatable bag I and the inflatable bag II. The outer end of the inflatable bag I is provided with an airbag strap I for positioning, and the outer end of the inflatable bag II is provided with an airbag strap II for positioning. The airbag straps I and II are fixed to both sides of the seat frame. The inflatable bags I and II form a side inflation area for side protection, and the connecting inflatable bag forms a buffer protection area for chest protection. The fully enclosed safety airbags are arranged along both sides and the top of the backrest frame. Inflatable bag I and inflatable bag II are located on both sides of the backrest frame, and the two inflatable bags are connected to the backrest frame through corresponding airbag straps. The inflatable bags I and II are staggered vertically, with the lower end of the airbag strap connected to the lower end of the inflatable bag and the upper end of the airbag strap connected to the upper part of the backrest frame.

2. The car seat as described in claim 1, characterized in that: The generator includes generator I and generator II, with generator I located on inflatable bag I and generator II located on inflatable bag II.

3. The car seat as described in claim 1, characterized in that: The airbag strap I, airbag I, connecting airbag, airbag II, and airbag strap II are all deformable flexible material structures, which sequentially form a linear airbag assembly.

4. The car seat as described in claim 1, characterized in that: The dimensions of both the inflatable bag I and the inflatable bag II are larger than those of the connected inflatable bag.

5. The automobile seat as described in claim 1, characterized in that: Both air bag strap I and air bag strap II have an air bag fixing structure at their outer ends.

6. The car seat as described in claim 2, characterized in that: The generator is integrated into the inflatable bag, and a generator fixing structure is provided on the generator.

7. The automobile seat as described in claim 3, characterized in that: The air bag strap is an elastic strap.

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