Far-end air bag and vehicle

Abstract

The utility model discloses a far-end air bag which comprises an air bag and an air generator used for inflating the air bag, the air generator is inserted into an air bag cavity, the air generator and the air bag are fixedly connected to a vehicle body seat, and a pull belt used for controlling the inflation expansion state of the air bag is arranged in the air bag. The drawstring divides the air bag cavity into a first air chamber and a second air chamber which are communicated with each other in the height direction of the automobile body, and the air generator is arranged in the second air chamber; the utility model further discloses a vehicle. The far-end air bag is installed on the vehicle. According to the utility model, a far-end passenger protection effect is achieved through a simpler single-cavity air bag structural design and a reasonable air bag folding storage mode, and the design difficulty of the far-end air bag and peripheral parts in a vehicle and the platformization of a far-end air bag product are favorably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle safety, in particular to a remote airbag and a vehicle. Background Art

[0002] With the development of automobile collision safety protection regulations, more and more attention has been paid to the protection of remote occupants in side collisions. At present, the airbag for remote occupant protection is arranged between two seats to prevent the occupants in the car from colliding with each other in a side collision. At the same time, in a side collision, it protects the remote occupants in the car from excessive movement and hitting the interior decorations and causing injuries. This airbag is also called a remote airbag or a central airbag.

[0003] The distal airbag structure in the prior art usually adopts a multi-cavity structure (two or three chambers) to ensure the airbag deployment posture and protection effect. However, the overall structure of the distal airbag with a multi-cavity structure is relatively complex, the airbag design is difficult, and the manufacturing cost is high. When installed near the seat, the overall volume space occupied is large and the seat requirements are also high. Although the distal airbag with a single-cavity structure can effectively avoid some of the defects of the aforementioned multi-cavity structure distal airbag, the existing single-cavity structure distal airbag cannot achieve the ideal protection effect. There are problems such as easy position displacement after the airbag is deployed and the insufficient rigidity of the bottom of the airbag causing penetration.

[0004] Therefore, it is necessary to improve the existing distal airbag structure to solve the problems of complex design, high cost and weight of the existing multi-cavity distal airbag and poor protection effect of the single-cavity distal airbag structure. Utility Model Content

[0005] In view of this, the utility model provides a remote airbag and a vehicle, which achieve the remote occupant protection effect through a simpler single-chamber airbag structure design and a reasonable airbag folding and storage method, which is conducive to reducing the design difficulty of the remote airbag and surrounding in-vehicle components and the platformization of the remote airbag product.

[0006] The utility model provides a distal airbag, comprising an airbag and a gas generator for inflating the airbag, wherein the gas generator is inserted into the airbag cavity and fixedly connected to the airbag on a vehicle body seat, a drawstring for controlling the inflation expansion state of the airbag is arranged inside the airbag, and the drawstring divides the airbag cavity into a first air chamber and a second air chamber that are interconnected in the vertical direction of the vehicle body, and the gas generator is arranged in the second air chamber.

[0007] Furthermore, the airbag is formed by sewing an inner bag piece arranged close to the passenger side and an outer bag piece arranged far from the passenger side, and the drawstring is arranged between the inner bag piece and the outer bag piece.

[0008] Furthermore, the drawstring is provided with an air guide hole for communicating the first air chamber with the second air chamber at an end portion close to the inner bag sheet.

[0009] Furthermore, the inner bag sheet is provided with a gathering area at a position located at the first air chamber, and the gathering area is used for expanding toward the passenger side after the second air chamber is inflated.

[0010] Furthermore, a plurality of strip-shaped sewing sections are provided on the inner bag sheet, and the plurality of sewing sections form the gathering area.

[0011] Furthermore, the area of ​​the inner bag sheet in the expanded state is smaller than the area of ​​the outer bag sheet in the expanded state.

[0012] Further, when the airbag is inflated by the gas generator, the second air chamber inflates before the first air chamber.

[0013] A vehicle is provided with the above-mentioned distal airbag installed on the vehicle.

[0014] The beneficial effects of the utility model are as follows: the distal airbag and vehicle provided by the utility model realize the deployment of the airbag toward the seat occupant side by designing different lengths of the inner and outer cloth pieces of the airbag, thereby avoiding the problem of deviation during the deployment of the airbag and better protecting the occupant; and by arranging a drawstring inside the airbag, the volume of the airbag can be effectively controlled to ensure that the internal pressure of the airbag meets the requirements of the collision energy; at the same time, the drawstring inside the airbag is also provided with an air guide hole for inflating the gas according to the design requirements, thereby ensuring the rigidity of the bottom of the airbag, which is beneficial to the deployment posture of the airbag and the protection of the occupants; the distal airbag can also achieve the best state of protecting the occupants by ensuring that the bottom of the airbag is deployed first and the upper part of the airbag is deployed later through a reasonable airbag folding method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the distal airbag structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the utility model after the distal airbag is inflated;

[0018] The figures are marked as follows: 1-air bag; 2-gas generator; 3-pull strap; 4-first air chamber; 5-second air chamber; 6-inner bag sheet; 7-outer bag sheet; 8-air guide hole; 9-sewing groove; 10-gas flow direction. DETAILED DESCRIPTION

[0019] As shown in the figure, a distal airbag provided by the utility model comprises an airbag 1 and a gas generator 2 for inflating the airbag 1, the gas generator 2 is inserted into the cavity of the airbag 1 and fixedly connected to the airbag 1 on the vehicle body seat, a drawstring 3 for controlling the inflation expansion state of the airbag is arranged inside the airbag 1, and the drawstring 3 divides the cavity of the airbag 1 into a first air chamber 4 and a second air chamber 5 which are interconnected in the vehicle body height direction, and the gas generator 2 is arranged in the second air chamber 5; wherein the airbag 1 is a single-cavity structure as a whole, and a drawstring 3 for dividing the cavity up and down in the vehicle body height direction is arranged inside the cavity to form a first air chamber 4 located at the upper part of the inflated airbag 1 and a second air chamber 5 located at the lower part of the inflated airbag 1, the drawstring 3 mainly controls the overall state of the airbag 1 after expansion (such as the overall volume of the airbag after expansion and the stiffness of the airbag after expansion, etc.), and the design width of the drawstring 3 The degree is determined according to the amount of energy absorbed by the collision test, so that the stiffness of the airbag 1 after expansion is just in the optimal range; at the same time, the drawstring 3 also divides the airbag 1 into a first air chamber 4 and a second air chamber 5. The first air chamber 4 is mainly used to protect the body parts above the abdomen and buttocks of the occupant (such as the neck, head, and chest), while the second air chamber 5 is mainly used to protect the body parts of the abdomen and buttocks of the occupant, and the gas generator 2 is arranged in the second air chamber 5. Therefore, when the airbag 1 is expanded, the second air chamber 5 is expanded first, and then the first air chamber 4 is expanded, which can protect the abdomen and buttocks that first contact with the expansion of the vehicle interior decoration parts, and then protect the body parts above the abdomen and buttocks; by arranging the drawstring 3 inside the cavity of the airbag 1 to control the overall volume of the airbag 1 and the stiffness of the airbag 1, it is ensured that the distal airbag used to protect the chest, abdomen and buttocks of the occupant in the collision test will not be punctured due to insufficient stiffness and cause harm to the human body, or excessive stiffness will cause collision damage to the human body.

[0020] In this embodiment, the air bag 1 is formed by sewing an inner bag sheet 6 arranged close to the passenger side and an outer bag sheet 7 arranged away from the passenger side, and the drawstring 3 is arranged between the inner bag sheet 6 and the outer bag sheet 7; Figure 2 As shown, the airbag 1 is formed by sewing an inner bag sheet 6 and an outer bag sheet 7 along the circumferential edge to form a sealed cavity structure, and the two ends of the drawstring 3 are respectively connected to the inner bag sheet 6 and the outer bag sheet 7, thereby separating the cavity of the airbag 1 into a first air chamber 4 and a second air chamber 5.

[0021] In this embodiment, the drawstring 3 is provided with an air guide hole 8 for connecting the first air chamber 4 and the second air chamber 5 at the end close to the inner bag sheet 6; when the air bag 1 is inflated by the gas generator 2, the second air chamber 5 is inflated before the first air chamber 1; Figure 1 and Figure 2As shown, by designing an air guide hole 8 at the end of the drawstring close to the inner bag sheet 6, it is ensured that the gas flow direction 10 flows out of the gas generator 2 and fills the first air chamber 4 before flowing to the second air chamber 5 and filling the second air chamber 5. This design can ensure the deployment speed of the lower part of the airbag 1 and the stiffness of the airbag, and avoid problems such as the small distance between the occupant and the center console, the slow deployment of the airbag 1 resulting in poor protection effect, and the airbag being easily punctured due to its low stiffness. At the same time, the sufficient stiffness of the lower part of the airbag 1 is also beneficial to the overall deployment posture of the airbag, and the problem of the lower part of the airbag 1 being soft causing the upper part of the airbag to deviate will not occur.

[0022] In this embodiment, the inner bag sheet 6 is provided with a gathering area at the position located in the first air chamber 4, and the gathering area is used for the second air chamber to expand toward the occupant side after inflation; since the airbag 1 is a single-cavity structure, in order to prevent the airbag 1 from deviating in the direction away from the occupant side due to lack of support close to the occupant side after inflation, a gathering area is provided at the position of the inner bag sheet 6 located in the second air chamber 5, wherein the gathering area is mainly a stitching area provided on the inner bag sheet 6; by providing the gathering area, it is convenient for personnel to distinguish the inside and outside of the airbag 1 for installation, and it is also possible to achieve the effect of the airbag 1 expanding toward the occupant side after inflation. The simple structural improvement is used in conjunction with the second air chamber 5 in the airbag 1 to solve the problem of the upper part of the airbag being deviated due to the soft lower part of the airbag 1.

[0023] In this embodiment, the gathering area is a sewing groove 9 and is formed by sewing the rectangular grooves arranged on the inner bag sheet 6; the area of ​​the inner bag sheet 6 in the expanded state is smaller than the area of ​​the outer bag sheet 7 in the expanded state; wherein the inner bag sheet 6 and the outer bag sheet 7 are completely consistent in size before sewing, and the gathering area is a sewing groove 9 formed by cutting 2-3 rectangular grooves on the inner bag sheet 6 and then sewing the rectangular grooves. Therefore, since the inner bag sheet 6 is cut, the area of ​​the inner bag sheet 6 in the expanded state is smaller than the area of ​​the outer bag sheet 7 in the expanded state, which is more conducive to achieving the effect of deploying the airbag 1 toward the occupant side.

[0024] The present embodiment also discloses a folding method for the above-mentioned distal airbag. Since the distance between the occupants and the center console in the width direction of the vehicle body is generally very small, during an actual collision, the occupant's abdomen will quickly touch the center console. Therefore, the lower part of the distal airbag 1 needs to be in place and filled quickly and maintain a certain rigidity, while the upper part of the airbag 1 is mainly to protect the occupant's head. The head will move due to inertia, and the required protection time will be late. Based on the above problem, the distal airbag of this scheme is folded in the following manner: the upper part of the airbag is folded downward in the Z direction, and the lower part of the airbag is pulled back by an inner plug and then rolled up. At this time, the inner plug of the lower part of the airbag is pulled back and unfolded quickly, and the inflation path of the second air chamber 5 will also ensure the deployment and inflation speed of the lower part of the airbag 1.

[0025] A vehicle is also provided in the present embodiment, on which the above-mentioned remote airbag is installed; after the remote airbag of this structure is applied to the vehicle, it can effectively avoid mutual collision injuries between the front-row main and front-passenger occupants and collision injuries to the occupants on the collision side due to inertial offset and the auxiliary instrument, the opposite side seat and door panels and other interior decoration parts, thereby improving the safety protection of the occupants and meeting the NCAP regulations of various countries; at the same time, the remote airbag achieves the remote occupant protection effect through a simpler single-chamber airbag structure design and a reasonable airbag folding and storage method, which is conducive to reducing the design difficulty of the remote airbag and surrounding in-vehicle components and the platformization of the remote airbag product.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A distal airbag, characterized in that: It includes an airbag and a gas generator for inflating the airbag, the gas generator is inserted into the airbag cavity and fixedly connected to the airbag on the vehicle body seat, a drawstring for controlling the inflation expansion state of the airbag is arranged inside the airbag, and the drawstring divides the airbag cavity into a first air chamber and a second air chamber that are interconnected in the vertical direction of the vehicle body, and the gas generator is arranged in the second air chamber.

2. The distal airbag according to claim 1, characterized in that: The air bag is formed by sewing an inner bag sheet arranged close to the passenger side and an outer bag sheet arranged far from the passenger side, and the drawstring is arranged between the inner bag sheet and the outer bag sheet.

3. The distal airbag according to claim 2, characterized in that: The drawstring is provided with an air guide hole for communicating the first air chamber with the second air chamber at an end portion close to the inner bag sheet.

4. The distal airbag according to claim 2, characterized in that: The inner bag sheet is provided with a gathering area at a position located at the first air chamber, and the gathering area is used for expanding toward the passenger side after the second air chamber is inflated.

5. The distal airbag according to claim 4, characterized in that: A plurality of strip-shaped sewing sections are arranged on the inner bag sheet, and the plurality of sewing sections form the gathering area.

6. The distal airbag according to claim 5, characterized in that: The area of ​​the inner bag sheet in the expanded state is smaller than the area of ​​the outer bag sheet in the expanded state.

7. The distal airbag according to claim 1, characterized in that: When the airbag is inflated by the gas generator, the second air chamber inflates before the first air chamber.

8. A vehicle, characterized in that: The vehicle is equipped with a distal airbag as described in any one of claims 1 to 7.

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