Airbag

Abstract

The invention relates to a safety air bag, in an inflatable unfolding state, a head protection area used for abutting against the face of the head of a passenger is formed at the rear end of the safety air bag, and the head protection area comprises an outward protruding area, a convex area, a concave area and a convex area, the safety air bag comprises a convex area and concave areas, the concave areas are located on the two sides of the convex area in the left-right direction of the safety air bag and comprise flanges, and the flanges and the outer wall, in the left-right direction, of the convex area define the concave areas. After the safety air bag is inflated and unfolded, concave areas are formed on the left side and the right side of the convex area. According to the safety air bag, the head of a passenger can slide into the inwards-concave areas on the two sides of the outwards-convex area under the small-offset side collision working condition, the head of the passenger is restrained in the head protection area of the safety air bag all the time, the head of the passenger is prevented from sliding out of the safety air bag, and therefore the head of the passenger is better protected against injuries.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive passive safety devices, and particularly to an airbag. Background Art

[0002] In the related art, one or more airbags are installed on a vehicle to protect the occupants when an accident occurs. Airbags come in various forms: for example, a driver airbag that inflates and deploys near the center of the steering wheel to protect the driver; a curtain airbag that deploys downward inside the window to protect the occupants when the vehicle is laterally impacted or rolls over; a side airbag (SAB) that deploys between the occupant and the side panel when the vehicle is laterally impacted to protect the occupant; and a front center airbag (FCA) that deploys from the frame of the center armrest of the seat to prevent two occupants from colliding with each other when the vehicle collides, etc.

[0003] However, in response to working conditions such as small offset collisions, the airbags in the related art cannot effectively protect the occupants. Summary of the Invention

[0004] To overcome the problems existing in the related art, the present disclosure provides an airbag.

[0005] According to the first aspect of the embodiments of the present disclosure, the present disclosure provides an airbag. In the inflated and deployed state, a head protection area for abutting against the face of the occupant's head is formed at the rear end of the airbag. The head protection area includes: a convex area, which is in a bulge shape; and a concave area, which is located on both sides of the convex area along the left - right direction of the airbag. Wherein, the concave area includes a baffle, and the baffle and the outer wall of the convex area along the left - right direction enclose to form the concave area.

[0006] In some embodiments, the rear end of the airbag is recessed inward along a broken line in the left - right direction to define the head protection area, and then the left end and the right end of the head protection area are sewn and connected corresponding to the left end and the right end of the airbag to form a sewing joint. In the inflated and deployed state, the middle part of the head protection area bulges to form the convex area, the head protection area forms the baffle at the sewing joint, and the edge of the convex area and the baffle enclose to form the concave area.

[0007] In some embodiments, the airbag at least includes: a front panel, including opposite first and second ends, the middle part of the front panel forms the head protection area after continuous bending, so that the first end is located at the lower end of the head protection area and the second end is located at the upper end of the head protection area; a rear panel, the rear panel is located at the upper end of the head protection area, and the edge of the rear panel is sewn to the edge of the front panel to form the airbag.

[0008] In some embodiments, in the inflated and deployed state, the lower side of the airbag includes two airbag feet, and the two airbag feet are symmetrically arranged in the left-right direction. When the rear end of the airbag is squeezed, the airbag feet abut against the dashboard of the vehicle to provide a supporting force in the longitudinal direction for the airbag.

[0009] In some embodiments, the airbag further includes at least one inner pull belt. Each inner pull belt includes opposite: a first end sewn to the first sewing area of the airbag; a second end sewn to the second sewing area of the airbag. Wherein, the second sewing area is located in the head protection area. In the inflated and deployed state, the inner pull belt tightens the head protection area to limit the convex height of the head protection area.

[0010] In some embodiments, along the left-right direction of the airbag, the second sewing area is located in the middle of the head protection area, and the length direction of the second sewing area extends along the left-right direction.

[0011] In some embodiments, the inner pull belt extends in the longitudinal direction of the airbag; and / or

[0012] The inner pull belt is arranged at an angle to the longitudinal direction of the airbag.

[0013] In some embodiments, a generator mounting opening is provided at the front end of the airbag. The first sewing area surrounds the generator mounting opening. A first hole is provided at the first end of the inner pull belt. After the first end of the inner pull belt is sewn to the first sewing area of the airbag, the first hole is aligned with the generator mounting opening.

[0014] In some embodiments, the airbag further includes a reinforcing piece, and the reinforcing piece is sewn around the generator mounting opening.

[0015] In some embodiments, the airbag further includes an air outlet, and the air outlet is located on the upper end face of the airbag.

[0016] In some embodiments, the side surface and / or the lower end of the airbag includes the concave structure.

[0017] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: The airbag of the present disclosure can, in the case of a small-offset collision, protect the head of the co-pilot occupant so that it can slide into the concave areas on both sides of the convex area, keeping the occupant's head always constrained within the head protection area of the airbag and preventing the occupant's head from slipping out of the airbag, thereby better protecting the occupant's head from injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0019] Figure 1 is a schematic plan view of the front cut piece and the rear cut piece of an airbag shown according to an exemplary embodiment;

[0020] Figure 2 is a schematic plan view of a reinforcing piece and an inner pull belt shown according to an exemplary embodiment;

[0021] Figure 3 is a schematic view of the left edge of the front cut piece shown according to an exemplary embodiment;

[0022] Figure 4 is a schematic view of the edge of the front cut piece shown according to an exemplary embodiment;

[0023] Figure 5 is a three-dimensional structural schematic view of the airbag in the inflated and deployed state shown according to an exemplary embodiment;

[0024] Figure 6 is another three-dimensional structural schematic view of the airbag in the inflated and deployed state shown according to an exemplary embodiment;

[0025] Figure 7 is a left side view of the airbag in the inflated and deployed state shown according to an exemplary embodiment;

[0026] Figure 8 is the installation position of the airbag when applied to a vehicle shown according to an exemplary embodiment;

[0027] Figure 9 is a schematic view of the inflated and deployed state of the airbag when applied to a vehicle shown according to an exemplary embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0029] To solve the above technical problems, the present disclosure provides an airbag 100. As Figure 8 shown, the airbag 100 can be disposed inside the dashboard 200 in front of the co-pilot of the vehicle. In the working condition of a small overlap collision of the vehicle, as Figure 9 shown, the airbag 100 inflates and pops out in front of the co-pilot occupant 400 and abuts against the head of the co-pilot occupant to ensure the head safety of the co-pilot occupant.

[0030] In the inflated state, as Figure 5 shown, a head protection area 10 is formed at the rear end of the airbag 100. The head protection area 10 is used to abut against the face of the occupant's head, thereby protecting the occupant's head.

[0031] It should be noted that the rear end of the airbag 100 refers to the end that abuts against the occupant's head along the front-rear direction L (which can also be understood as the longitudinal direction of the vehicle), and the front end of the airbag 100 refers to the end close to the windshield 300 along the longitudinal direction L. The upper and lower ends of the airbag 100 refer to the upper end face 20 and the lower end face 30 defined along the up-down direction G (which can also be understood as the direction of gravity). The left-right direction H of the airbag 100 refers to the direction of the occupant's left and right hands when the occupant is sitting in the vehicle compartment and the occupant's face is facing the windshield 300.

[0032] Among them, the head protection area 10 may include a convex area 11 and a concave area 12. As Figure 5 and Figure 6 shown, the convex area 11 is in a bulging shape, and the concave areas 12 are located on both sides of the convex area 11 along the left-right direction H of the airbag 100. The concave areas 12 are recessed toward the inside of the airbag 100 and form concave openings 13.

[0033] Furthermore, the concave area 12 includes a retaining edge 14. The retaining edge 14 is fixedly connected to the left and right sides of the convex area 11. The retaining edge 14 and the outer wall of the convex area 11 along the left-right direction H enclose the concave area 12, that is, the inner wall of the retaining edge 14 and the outer wall of the convex area 11 along the left-right direction H together form the inner wall of the entire concave area 12. Therefore, whether in the left-right direction H or the front-rear direction L of the airbag 100, the edges of the concave opening 13 of the concave area 12 and the edges of the convex area 11 are smoothly transitioned and are non-disconnected connections.

[0034] In this way, under the condition of a small offset collision, it can be ensured that after the airbag 100 is inflated and deployed, the co-pilot occupant can smoothly slide into the concave area 12, so that the head of the co-pilot occupant is always constrained within the head protection area 10 at the rear end of the airbag 100, preventing the occupant's head from slipping out of the airbag 100, thereby ensuring the head safety of the co-pilot occupant.

[0035] In some embodiments, the edge 14 of the concave area 12 can be an independent cut piece. After the airbag 100 is sewn as a whole, the edge 14 of the independent cut piece is sewn and fixed on the left and right sides of the convex area 11, thereby forming the concave area 12 of the head protection area 10.

[0036] In this embodiment, as Figures 5 to 7 shown, the edge 14 of the concave area 12 at the head protection area 10 of the airbag 100 and the convex area 11 are integrally formed.

[0037] The airbag 100 can be sewn from one or more cut pieces. Specifically, when the airbag 100 is sewn from one cut piece, the cut piece is folded in half along the first fold line BD in the left-right direction H to form the upper end face 20 and the lower end face 30 of the airbag 100, and the first fold line BD is located at the rear end of the airbag 100.

[0038] Again, as Figure 1 、 Figure 3 and Figure 4 shown, define the intersection point of the first fold line BD and the left edge of the cut piece as point B, and the intersection point of the first fold line BD and the right edge as point D. The intersection point of the second fold line GH and the left edge of the cut piece is point G, and the intersection point of the second fold line GH and the right edge is point H. The intersection point of the third fold line AC and the left edge of the cut piece is point A, and the intersection point of the third fold line AC and the right edge is point C.

[0039] Fold the rear end of the cut piece inward along the second fold line GH and the third fold line AC into the airbag 100, as Figure 3 and Figure 4 shown. Looking at the cut piece from the side, the part of the cut piece that is recessed inside the rear end of the airbag 100 forms the head protection area 10. At this time, the second fold line GH divides the upper end face 20 of the airbag 100 and the head protection area 10, and the third fold line AC divides the lower end face 30 of the airbag and the head protection area 10. The head protection area 10 at the rear end of the airbag 100 forms a V shape with the first fold line BD.

[0040] Subsequently, the left edges BG and BA of the head protection area 10 are sewn longitudinally to the left edges of the upper end face 20 and the lower end face 30 of the airbag 100, thereby forming a longitudinally extending left sewing joint. At the same time, the right edges DH and DC of the head protection area 10 are sewn longitudinally to the right edges of the upper end face 20 and the lower end face 30 of the airbag 100, thereby forming a longitudinally extending right sewing joint.

[0041] When the airbag 100 is inflated and deployed, the middle part of the head protection area 10 bulges towards the rear end to form a convex area 11. Since the B point and D point of the first fold line BD of the head protection area 10 are sewn to the left edge and the right edge of the cut piece respectively, when the airbag 100 is inflated and deployed, the B point and D point of the first fold line BD cannot move towards the rear end. The head protection area 10 forms a retaining edge 14 at the left sewing joint and the right sewing joint respectively. The edge of the convex area 11 and the retaining edge 14 enclose a concave area 12, and the B point and D point of the first fold line BD are respectively the lowest points of the concave area 12.

[0042] At the same time, the head protection area 10 formed by bending the middle part of the front cut piece and the above sewing method can reduce the volume of the airbag 100, so a smaller gas generator can be applied, reducing costs and improving the adaptability of the airbag 100.

[0043] When the airbag 100 is sewn from multiple cut pieces, as Figure 1 shown, the airbag 100 includes at least a front cut piece 80 and a rear cut piece 90. The front cut piece 80 includes an opposite first end 81 (such as Figure 1 the left end shown) and a second end 82 (such as Figure 1 the right end shown). The middle part of the front cut piece 80 is continuously bent to form the head protection area 10, so that the first end 81 is located at the lower end of the head protection area 10 and the second end 82 is located at the upper end of the head protection area 10. The part of the front cut piece 80 located at the lower end of the head protection area 10 forms the lower end face 30 of the airbag 100. The rear cut piece 90 and the part of the front cut piece 80 located at the upper end of the head protection area 10 together form the upper end face 20 of the airbag 100. All edges of the rear cut piece 90 are sewn to the first end 81, the second end 82, the left edge and the right edge of the front cut piece 80 to form the bag body of the airbag 100.

[0044] Forming the bag body of the airbag 100 by sewing the front cut piece 80 and the rear cut piece 90 can reduce the cutting and manufacturing costs of the cut pieces of the airbag 100.

[0045] In some embodiments, in the inflated and deployed state, the lower side of the airbag 100 includes two airbag feet 70, and the two airbag feet 70 are symmetrically arranged along the left-right direction H. When the airbag 100 is inflated and deployed, the airbag feet 70 can abut against the vehicle dashboard 200. When the occupant's head abuts against and squeezes the airbag 100, the airbag feet 70 provide a longitudinal supporting force to the airbag 100 by abutting against the vehicle dashboard 200, thereby preventing the airbag 100 from sliding up and down or left and right, making the airbag 100 more stable when being squeezed, and better supporting the occupant's head.

[0046] In some embodiments, the airbag 100 further includes an inner pull belt 40. The inner pull belt 40 includes opposite first end 41 and second end 42. The first end 41 of the inner pull belt 40 is sewn and connected to the first sewing area 50 of the airbag 100, and the second end 42 of the inner pull belt 40 is sewn and connected to the second sewing area 60 of the airbag 100. Among them, as Figure 1 and Figure 5 shown, the second sewing area 60 is located in the head protection area 10. In the inflated and deployed state, the length of the inner pull belt 40 is less than the longitudinal length of the airbag 100, so that the inner pull belt 40 is tightened to tighten the head protection area 10, and is used to limit the protrusion height of the convex area 11 of the head protection area 10.

[0047] Among them, a plurality of second sewing areas 60 can be provided at the head protection area 10 of the airbag 100. At the same time, a plurality of inner pull belts 40 can also be provided. The second end 42 of each inner pull belt 40 corresponds to a second sewing area 60. Sewing the second ends 42 of a plurality of inner pull belts 40 to the second sewing areas 60 can control the protrusion height (or flatness) or shape of the convex area 11 of the head protection area 10, thereby improving the adaptability of the airbag 100.

[0048] In some embodiments, along the left-right direction H of the airbag 100, the second sewing area 60 is located in the middle of the head protection area 10, and the length direction of the second sewing area 60 extends along the left-right direction H. The length of the second sewing area 60 extends along the left-right direction H. When the second end 42 of the inner pull belt 40 is sewn and connected to the second sewing area 60, it is more conducive to guiding the head of the co-pilot passenger to move along the left-right direction H and enter the concave area 12.

[0049] In addition, the length direction of the second sewing area 60 can also extend along the up-down direction G of the airbag 100. The head protection area 10 can include a second sewing area 60 extending along the up-down direction G and a second sewing area 60 extending along the left-right direction H according to design requirements.

[0050] In addition, when multiple inner pull straps 40 are provided, since the second ends 42 of the inner pull straps 40 respectively correspond to a second sewing area 60, the multiple second sewing areas 60 can be arranged in a vertical direction G, or can be arranged in a horizontal direction H, or can be arranged obliquely in a direction from upper left to lower right or in a direction from lower left to upper right, and no specific limitation is made here.

[0051] By setting the tension force of each inner pull strap 40 on the head protection area 10, the shape of the head protection area 10 is changed to guide the passenger's head to move more easily in the horizontal direction H and enter the concave area 12.

[0052] Whether there is one or multiple inner pull straps 40, in some embodiments, the inner pull strap 40 can extend along the longitudinal direction L of the airbag 100. At this time, the first end 41 of the inner pull strap 40 is sewn and connected to the inner side of the front end of the airbag 100. Or the inner pull strap 40 is arranged at an angle to the longitudinal direction L of the airbag 100. At this time, the first end 41 of the inner pull strap 40 is sewn and connected to the inner side of the side of the airbag 100.

[0053] In some embodiments, such as Figure 1 and Figure 6 shown, a generator installation port 83 is provided at the front end of the airbag 100. When the airbag 100 is sewn by a front cut piece 80 and a rear cut piece 90, the generator installation port 83 is located at the first end 41 of the front cut piece 80, and the first sewing area 50 surrounds the generator installation port 83. As Figure 2 shown, a first hole 411 is provided at the first end 41 of the inner pull strap 40. After the first end 41 of the inner pull strap 40 is sewn and connected to the first sewing area 50 of the airbag 100, the first hole 411 is aligned with the generator installation port 83.

[0054] The first end 41 of the inner pull strap 40 is sewn around the generator installation port 83, which can not only fix the inner pull strap 40 inside the airbag 100, but also increase the strength and heat resistance at the generator installation port 83, avoid the front cut piece 80 from cracking at the generator installation port 83, and thus avoid the airbag 100 from leaking and failing.

[0055] In some embodiments, such as Figure 2 shown, the airbag 100 further includes a reinforcing piece 101. The middle part of the reinforcing piece 101 also has a sleeve hole 102. The reinforcing piece 101 is located inside the airbag 100 and is sewn around the generator installation port 83, so as to strengthen the strength and heat resistance at the generator installation port 83 and avoid the high-speed, high-pressure, and high-temperature gas generated by the gas generator from tearing or damaging the generator installation port 83.

[0056] In some embodiments, such as Figure 1 andFigure 6 As shown, the airbag 100 further includes an air outlet 84 for deflating the airbag after being compressed. The air outlet 84 can be located at the second end 42 of the front panel 80. After the front panel 80 is sewn, the air outlet 84 is located on the upper end face 20 of the airbag 100.

[0057] In some embodiments, concave regions 12 can also be provided on the side and / or the lower end face 30 of the airbag 100. Thus, components such as a display screen can be avoided during inflation and deployment.

[0058] Based on the same inventive concept, the present disclosure provides an airbag 100 device, including the above-mentioned airbag 100 and a gas generator. The gas generator is used to inflate the airbag 100 through a generator mounting port so that the airbag 100 inflates and deploys. The specific ways of implementing the functions in the airbag 100 device in the above embodiments have been described in detail in the embodiments related to the airbag 100, and will not be elaborated here.

[0059] Furthermore, it can be further understood that terms such as "first", "second", etc. are used to describe various structures, but these structures should not be limited to these terms. These terms are only used to distinguish structures of the same type from each other, and do not represent a specific order or importance. In fact, expressions such as "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first structure can also be referred to as the second structure, and similarly, the second structure can also be referred to as the first structure.

[0060] Furthermore, it can be further understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "front", "rear", "upper", "lower", "left", "right", "vertical", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0061] Those skilled in the art will readily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0062] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. An airbag (100), characterized in that, In the inflated and deployed state, a head protection area (10) for abutting against the face of an occupant's head is formed at the rear end of the airbag (100), and the head protection area (10) includes: A convex area (11), and the convex area (11) is in a bulge shape; and A concave area (12), and the concave area (12) is located on both sides of the convex area (11) along the left-right direction (H) of the airbag (100), wherein, the concave area (12) includes a retaining edge (14), and the retaining edge (14) and the outer wall of the convex area (11) along the left-right direction (H) enclose to form the concave area (12).

2. The airbag (100) according to claim 1, characterized in that, The rear end of the airbag (100) is recessed inward along a fold line in the left-right direction (H) into the interior of the airbag to define the head protection area (10), and then the left and right edges of the head protection area (10) are sewn and connected corresponding to the left and right edge ends of the airbag (100) to form a sewing connection, In the inflated and deployed state, the middle part of the head protection area (10) bulges to form the convex area (11), the head protection area (11) forms the retaining edge (14) at the sewing connection, and the edge of the convex area (11) and the retaining edge (14) enclose to form the concave area (12).

3. The airbag (100) according to claim 1, characterized in that, The airbag (100) at least includes: A front cut piece (80), including opposite first end (81) and second end (82), and the middle part of the front cut piece (80) forms the head protection area (10) through continuous bending, so that the first end (81) is located at the lower end of the head protection area (10), and the second end (82) is located at the upper end of the head protection area (10), A rear cut piece (90), and the rear cut piece (90) is located at the upper end of the head protection area (10), and the edge of the rear cut piece (90) is sewn and connected with the edge of the front cut piece (80) to form the airbag (100).

4. The airbag (100) according to claim 1, characterized in that, In the inflated and deployed state, the lower side of the airbag (100) includes two airbag feet (70), and the two airbag feet (70) are symmetrically arranged along the left-right direction (H). When the rear end of the airbag (100) is squeezed, the airbag feet (70) abut against the vehicle's instrument panel (200) to provide a supporting force in the longitudinal direction (L) for the airbag (100).

5. The airbag (100) according to claim 1, characterized in that, The airbag (100) further includes at least one inner pull belt (40), and each inner pull belt (40) includes opposite: A first end (41), sewn and connected with the first sewing area (50) of the airbag (100), The second end (42) is sewn and connected to the second sewing area (60) of the airbag (100). Wherein, the second sewing area (60) is located in the head protection area (10). In the inflated and deployed state, the inner strap (40) tightens the head protection area (10) to limit the bulging height of the head protection area (10).

6. The airbag (100) according to claim 5, wherein Along the left - right direction (H) of the airbag (100), the second sewing area (60) is located in the middle of the head protection area (10), and the length direction of the second sewing area (60) extends along the left - right direction (H).

7. The airbag (100) according to claim 5, wherein The inner strap (40) extends along the longitudinal direction (L) of the airbag (100); and / or The inner strap (40) is arranged at an angle with the longitudinal direction (L) of the airbag (100).

8. The airbag (100) according to claim 5, wherein A generator mounting opening (83) is provided at the front end of the airbag (100), and the first sewing area (50) surrounds the generator mounting opening (83). A first hole (411) is provided at the first end (41) of the inner strap (40). After the first end (41) of the inner strap (40) is sewn and connected to the first sewing area (50) of the airbag (100), the first hole (411) is aligned with the generator mounting opening (83).

9. The airbag (100) according to claim 1, wherein The airbag (100) further includes a reinforcing sheet (101), and the reinforcing sheet (101) is sewn around the generator mounting opening (83).

10. The airbag (100) according to claim 1, wherein The airbag (100) further includes an air outlet (84), and the air outlet (84) is located on the upper end face (20) of the airbag (100).

11. The airbag (100) according to claim 1, wherein The side surface and / or the lower end face (30) of the airbag (100) includes the concave area (12).

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