Full-wrapping safety air bag and automobile seat thereof

Abstract

The full-wrapping safety airbag comprises an airbag structure and a generator used for generating gas, the airbag structure and the generator are connected, and the airbag structure comprises an inflation bag I, an inflation bag II and a communicating inflation bag used for communicating the inflation bag I with the inflation bag II; an air bag drawstring I for positioning is arranged at the outer end of the inflatable bag I, and an air bag drawstring II for positioning is arranged at the outer end of the inflatable bag II. The full-wrapping safety air bags are arranged along the two sides and the top of the backrest framework, the inflation bag I and the inflation bag II are located on the two sides of the backrest framework respectively, and the two inflation bags are connected with the backrest framework through corresponding air bag drawstrings. When a passenger adjusts the angle of the backrest of the seat, the full-wrapping safety air bag can be adjusted along with the adjustment of the angle of the backrest, so that the air bag protection area can be synchronously adjusted along with the adjustment of the angle of the backrest, and the passenger can be effectively protected in a large-angle backrest angle and zero-gravity lying posture state.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, in particular to a fully wrapped safety airbag and an automobile seat thereof. Background Art

[0002] As autonomous driving enters the L2+ / L3 stage, the interior cabin will be fully upgraded to a mobile "third space", and comfortable and intelligent configurations such as zero-gravity seats will become increasingly abundant. However, the zero-gravity seats of existing models on the market 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 lying position, and 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 wrapped safety airbag installed on a seat back, comprising an airbag and a gas generator, wherein the airbag is of a bilaterally symmetrical structure, and two air inlet passages are symmetrically arranged on both sides of the rear end of the airbag, and there are two gas generators which are symmetrically fixed in the two air inlet passages; a non-inflatable area is sewn in the middle of the airbag near the rear end, and two side head protection areas and two side chest and abdomen protection areas are symmetrically arranged on both sides of the non-inflatable area, the side head protection areas are respectively adjacent to the non-inflatable areas, the side chest and abdomen protection areas are respectively located on the outside of the side head protection areas, and the side head protection areas and the side chest and abdomen protection areas are respectively connected to the corresponding air inlet passages; a front chest and abdomen protection area is arranged in the middle of the airbag near the front end, and the front ends of the two side head protection areas are respectively connected to the front chest and abdomen protection areas; drawstrings are symmetrically connected to the two sides of the front chest and abdomen protection areas 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] In view of the deficiencies in the prior art, the present invention provides a fully wrapped safety airbag and a car seat thereof, which can effectively protect the occupants in a reclining state with a large backrest angle and zero gravity.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A fully wrapped safety airbag comprises a connected airbag structure and a generator for generating gas, wherein the airbag structure comprises 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 drawstring I for positioning, and the outer end of the inflatable bag II is provided with an airbag drawstring II for positioning.

[0007] The air bag drawstring I and the air bag drawstring II are fixed on both sides of the seat frame, and the air bag I and the air bag II form a side inflation area for side protection, and the air bags are connected to form a buffer protection area for chest protection.

[0008] The generator comprises a generator I and a generator II, wherein the generator I is arranged on the inflatable bag I, and the generator II is arranged on the inflatable bag II.

[0009] The airbag drawstring I, the inflatable bag I, the connected inflatable bag, the inflatable bag II and the airbag drawstring II are all deformable flexible material structures, which sequentially form a linear airbag assembly.

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

[0011] The outer ends of the air bag drawstring I and the air bag drawstring II are both provided with air bag fixing structures.

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

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

[0014] A car seat comprises a seat frame, wherein the seat frame comprises a seat cushion frame and a backrest frame, and also comprises a fully wrapped safety airbag, wherein the fully wrapped safety airbag is arranged along both sides and the top of the backrest frame, and an inflatable bag I and an inflatable bag II are respectively located on both sides of the backrest frame, and the two inflatable bags are connected to the backrest frame through corresponding airbag drawstrings.

[0015] The inflatable bag I and the inflatable bag II are arranged in an upper and lower staggered manner, the lower end of the air bag drawstring is connected to the lower end of the inflatable bag, and the upper end of the air bag drawstring is connected to the upper part of the backrest frame.

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

[0017] The full-wrapped airbag and its car seat structure are reasonably designed. The full-wrapped airbag assembly is fixed on the seat frame. When the passenger adjusts the seat back angle, the full-wrapped airbag will be adjusted simultaneously with the seat back angle. Therefore, the airbag protection area is adjusted synchronously with the seat back angle, which can realize the protection of the occupant's head and chest at any angle of the seat back, and can meet the protection of occupants under various collision conditions such as head-on collision, side collision, far-end collision, and small offset; it can effectively protect occupants in large backrest angles and zero-gravity lying positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents and symbols in the drawings of this specification:

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

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

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

[0022] Figure 4 Another side view of the airbag of the present invention assembled on a seat frame.

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

[0024] Figure 6 This is a left side view of the fully wrapped safety airbag of the present invention when it is unfolded.

[0025] Figure 7 This is a front view of the fully wrapped safety airbag of the present invention when it is deployed.

[0026] Figure 8 This is a right side view of the fully wrapped safety airbag of the present invention when it is unfolded.

[0027] In the figure:

[0028] 1. Fully wrapped safety airbag assembly, 10. Airbag fixing point I, 20. Airbag drawstring 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 drawstring II, 70. Airbag fixing point II. DETAILED DESCRIPTION

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

[0030] like Figures 1 to 8 As shown, the fully wrapped airbag includes a connected airbag structure and a generator for generating gas; the airbag structure includes an airbag I 31, an airbag II 51, and a connecting airbag for connecting airbag I and airbag II, the connecting airbag is arranged between airbag I and airbag II, the outer end of airbag I is provided with an airbag drawstring I 20 for positioning, and the outer end of airbag II is provided with an airbag drawstring II 60 for positioning.

[0031] Airbag drawstring I, airbag I, connected airbag, airbag II and airbag drawstring II are all deformable flexible material structures, such as traditional non-woven fabrics; airbag drawstring I, airbag I, connected airbag, airbag II and airbag drawstring II are sequentially connected to form a linear fully wrapped safety airbag assembly 1, which has a compact structure and is easy to arrange.

[0032] The fully wrapped airbag assembly 1 is arranged on the seat frame, and the airbag I31 and the airbag II51 are respectively located on both sides of the seat frame; the end of the airbag I is positioned by the airbag drawstring I, and the end of the airbag drawstring I is fixed to the seat frame by the airbag fixing point I10, and the end of the airbag II is positioned by the airbag drawstring II, and the end of the airbag drawstring II is fixed to the seat frame by the airbag fixing point II70.

[0033] The fully wrapped safety airbag assembly of the present invention is installed in the seat. When a collision occurs, the airbag is inflated to fix the person on the seat in a large backrest angle and zero-gravity lying state, forming a buffer area to protect the occupant.

[0034] The generator includes generator I 33 and generator II 52. Generator I is arranged on air bag I, and generator II is arranged on air bag II. The generators are integrated, compact in structure, small in space, and easy to arrange and install. Air bag drawstring I 20 and air bag drawstring II 60 are fixed on both sides of the seat frame. The two air bag drawstrings are equivalent to air bag pull lines, which can limit the two air bags after inflation. There is no direct fixed connection structure between the connected air bag and the seat frame, and the connected air bag is driven by the inflated air bag to reach the set area. Air bag I and air bag II form a side inflation area for side protection, and the connected air bag forms a buffer protection area for chest protection.

[0035] The fully wrapped safety airbag of the present invention is mainly composed of a generator and an airbag, which is installed on the seat back and wrapped by seat foam. The airbag cavity is mainly composed of three parts, which respectively correspond to the inflation area I30 for the occupant's head during a side collision, the inflation area II40 for the occupant's head and chest during a frontal collision, and the inflation area III50 realizes the tearing of the seat foam to ensure that the drawstring can fly out normally, while taking into account the occupant protection effect during a far-end collision.

[0036] The dimensions of air bag I and air bag II are larger than those of the connected air bag; air bag I and air bag II are located on both sides to form a larger lateral protection area, and the connected air bag is relatively small in size, which makes it easy for the two air bags to drive the connected air bag to reach the chest area after inflation, forming an overall full-coverage protection; it can effectively protect occupants in a large-angle backrest angle and zero-gravity lying position.

[0037] Airbag fixing structures are provided at the outer ends of airbag strap I and airbag strap II; the pneumatic fixing structure can adopt a traditional fixing plate or fixing ring to facilitate connection with the seat frame; the airbag strap is an elastic strap to improve the cushioning effect and prevent occupants from being injured.

[0038] The generator is integrated on the inflatable bag, and a generator fixing structure is provided on the generator; specifically, generator I is integrated on the inflatable bag I, and generator I is positioned by the set generator I fixing point 32, and generator II is integrated on the inflatable bag II, and generator II is positioned by the set generator II fixing point 53; the integrated setting has a compact structure.

[0039] like Figures 2 to 5 As shown, the present invention provides a car seat, including a seat frame and the above-mentioned fully wrapped airbag assembly, the seat frame includes an associated seat cushion frame and a backrest frame; the fully wrapped airbag is arranged along both sides and the top of the backrest frame, the inflatable bag I and the inflatable bag II are respectively located on both sides of the backrest frame, and the two inflatable bags are connected to the backrest frame through corresponding airbag drawstrings; the connecting inflatable bag between the inflatable bag I and the inflatable bag II is located on the top of the backrest frame.

[0040] Inflatable bag I and inflatable bag II are staggered up and down; specifically, inflatable bag I is located in the upper left part, and inflatable bag II is located in the middle right part, both of which are integrated in the seat foam. The inflatable area I formed after inflating air bag I can protect the sides and head.

[0041] The lower end of the airbag drawstring is connected to the lower end of the inflatable bag, and the upper end of the airbag drawstring is connected to the upper part of the backrest frame. Specifically, the inflatable bag I and the inflatable bag II are both in a vertical setting state in the initial state, the upper end of the inflatable bag I and the upper end of the inflatable bag II are connected through the connecting inflatable bag, and the lower end of the inflatable bag I is connected to the lower end of the airbag drawstring I. Figure 5 The air bag drawstring Ⅰ is set in reverse, that is, the other end of the air bag drawstring Ⅰ is set upward, and the upper end of the air bag drawstring Ⅰ is connected to the upper part of the backrest frame through the air bag fixing point Ⅰ; the lower end of the inflatable bag Ⅱ is connected to the lower end of the air bag drawstring Ⅱ, as shown in FIG. Figure 5 The air bag drawstring II shown is set in reverse, that is, the other end of the air bag drawstring II is set upward, and the upper end of the air bag drawstring II is connected to the upper part of the backrest frame through the air bag fixing point II; this special structure can achieve that after the inflatable bag I and the inflatable bag II are inflated, the connected inflatable bag is driven to be located on the chest, and the inflated connected inflatable bag provides cushioning protection for the chest.

[0042] The preferred specific embodiments of the present invention are:

[0043] Figure 1 The figure shows a fully wrapped safety airbag assembly 1, which is mainly composed of an airbag fixing point Ⅰ, an airbag drawstring Ⅰ, a generator Ⅰ, an inflation area Ⅰ, a generator Ⅰ fixing point, an inflation area Ⅱ, an inflation area Ⅲ, a generator Ⅱ, a generator Ⅱ fixing point, an airbag drawstring Ⅱ, an airbag fixing point Ⅱ, etc.; Figure 2 The figure shows a front view of a fully wrapped safety airbag mounted on a seat frame, wherein the airbag-related structure is arranged on the seat frame, and the generator is fixed to the side of the seat frame by screws; Figure 3 and Figure 4The figure shows a side view of a fully wrapped airbag mounted on a seat frame; Figure 5 The figure shows the rear view of the fully wrapped airbag installed on the seat frame, with airbag fixing point I and airbag fixing point II fixed on the seat frame sheet metal.

[0044] When a frontal collision occurs, the airbag controller sends out an ignition command. After receiving the ignition command, the generator generates a large amount of gas to quickly inflate the airbag inflation area I and inflation area III. The inflation area II is sewn together with the inflation area I and inflation area III, and the generator gas first enters the inflation area I and inflation area III, and quickly fills the inflation area II at the same time. During the expansion of the inflation area I, the drawstring I will be driven to move together. The drawstring I is fixed to the seat frame by the airbag fixing point I. When strap I moves to the extreme state, it will tighten the inflatable area I. At the same time, when the inflatable area III is expanded, it will also drive strap II to fly out of the seat foam. Strap II is fastened to the seat frame by the airbag fixing point II. When strap II moves to the extreme state, it will tighten the inflatable area III. Inflatable area II is connected with inflatable area I and inflatable area III as a whole, and the gas is quickly filled to the head and chest of the occupant at the same time, forming a buffer cavity, thereby realizing the protection of the occupants in zero gravity or at a large angle of the seat back.

[0045] When a side collision occurs, the occupants move toward the side of the vehicle body, and the airbag inflation area I can be quickly filled, preventing the occupants' heads from directly colliding with the vehicle body interior, protecting the occupants' heads from injury. When a far-end collision occurs, the occupants move toward the inside of the vehicle, and the airbag inflation area III can be quickly filled, protecting the occupants in the vehicle from colliding with the occupants' heads, avoiding injury.

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

[0047] The above is only an explanation of the 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 is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A fully wrapped safety airbag, comprising a connected airbag structure and a generator for generating gas, characterized in that: 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 drawstring I for positioning, and the outer end of the inflatable bag II is provided with an airbag drawstring II for positioning.

2. The fully wrapped safety airbag according to claim 1, characterized in that: The air bag drawstring I and the air bag drawstring II are fixed on both sides of the seat frame, and the air bag I and the air bag II form a side inflation area for side protection, and the air bags are connected to form a buffer protection area for chest protection.

3. The fully wrapped safety airbag according to claim 1, characterized in that: The generator comprises a generator I and a generator II, wherein the generator I is arranged on the inflatable bag I, and the generator II is arranged on the inflatable bag II.

4. The fully wrapped safety airbag according to claim 1, characterized in that: The airbag drawstring I, the inflatable bag I, the connected inflatable bag, the inflatable bag II and the airbag drawstring II are all deformable flexible material structures, which sequentially form a linear airbag assembly.

5. The fully wrapped safety airbag as claimed in claim 1, characterized in that: The dimensions of the inflatable bag I and the inflatable bag II are both larger than those of the connected inflatable bag.

6. The fully wrapped safety airbag as claimed in claim 2, characterized in that: The outer ends of the air bag drawstring I and the air bag drawstring II are both provided with air bag fixing structures.

7. The fully wrapped safety airbag as claimed in claim 3, characterized in that: The generator is integrated on the inflatable bag, and a generator fixing structure is provided on the generator.

8. The fully wrapped safety airbag as claimed in claim 4, characterized in that: The air bag drawstring is an elastic drawstring.

9. An automobile seat, comprising a seat frame, the seat frame comprising a seat cushion frame and a backrest frame, characterized in that: It also includes a fully wrapped airbag as described in any one of claims 1 to 8, wherein the fully wrapped airbag is arranged along both sides and the top of the backrest frame, and the inflatable bag I and the inflatable bag II are respectively located on both sides of the backrest frame, and the two inflatable bags are connected to the backrest frame through corresponding airbag drawstrings.

10. The vehicle seat according to claim 9, characterized in that: The inflatable bag I and the inflatable bag II are arranged in an upper and lower staggered manner, the lower end of the air bag drawstring is connected to the lower end of the inflatable bag, and the upper end of the air bag drawstring is connected to the upper part of the backrest frame.

Images