Airbags and roof-mounted front airbags

Abstract

The present invention relates to the technical field of airbags, and provides an airbag bag and a top-mounted front airbag. The airbag bag comprises: front and rear sheet bag cloths; a top-side sheet bag cloth, comprising a main body and wing parts located on both sides of the main body, the two ends of the main body are respectively connected to the two ends of the front and rear sheet bag cloths, and the two wing parts are respectively connected to the two sides of the front and rear sheet bag cloths; when the airbag bag is inflated, the front and rear sheet bag cloths form the front and rear parts of the airbag bag, the main body forms the top of the airbag bag, and the wing parts serve as thickness supports of the airbag bag and form the side parts of the airbag bag. The present invention forms wing parts on both sides of the main body of the top-side sheet bag cloth, and the two wing parts are respectively connected to the two sides of the front and rear sheet bag cloths, so that after the airbag bag is inflated, the wing parts serve as thickness supports of the airbag bag and form the side parts of the airbag bag, effectively increasing and adjusting the thickness of the airbag bag as needed, so that when the airbag bag is applied to the top-mounted front airbag, it can play a good safety protection role for the front row passengers and can adapt to different safety protection specifications.

Description

Technical Field

[0001] The invention relates to the technical field of safety airbags, in particular to an airbag bag and a top-mounted front safety airbag. Background Art

[0002] New energy vehicles and other vehicles are equipped with a roof-mounted front airbag (Bag-in-Roof, BiR). The roof-mounted front airbag is installed on the roof and is used to deploy downward along the windshield when the vehicle is hit head-on, providing safety protection for the front passengers 20 (including the driver and the co-driver).

[0003] See also Figure 1 The application scenario of the top-mounted front airbag in the vehicle is shown. The airbag bag 10 ′ of the current top-mounted front airbag has an insufficient thickness T′ after deployment, and cannot provide good safety protection for the front passenger 20 .

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of this, the present invention provides an airbag bag and a top-mounted front safety airbag. By adding new wings, the thickness of the airbag bag is effectively increased and can be adjusted as needed, so that the airbag bag can provide good safety protection for front passengers when applied to the top-mounted front safety airbag.

[0006] One aspect of the present invention provides an airbag bag for a top-mounted front safety airbag, comprising: front and rear bag cloths; top side bag cloths, comprising a main body and wing portions located on both sides of the main body, the two ends of the main body are respectively connected to the two ends of the front and rear bag cloths, and the two wing portions are respectively connected to the two sides of the front and rear bag cloths; when the airbag bag is inflated, the front and rear bag cloths form the front and rear parts of the airbag bag, the main body forms the top of the airbag bag, and the wing portions serve as thickness supports for the airbag bag and form the sides of the airbag bag.

[0007] In some embodiments, the wing portion has a first arcuate edge; when the airbag bag is fully inflated, the first arcuate edge and a portion of the front and rear bag fabrics form an arcuate raised front contour of the airbag bag.

[0008] In some embodiments, the wing portion has a second arc-shaped edge; when the airbag bag is fully inflated, the second arc-shaped edge and a portion of the front and rear bag fabrics form a rear contour of the airbag bag.

[0009] In some embodiments, the free end of the wing is formed into an arc shape; when the airbag bag is fully inflated, the free end of the wing and a portion of the front and rear bag fabrics form an arc-shaped raised bottom contour of the airbag bag.

[0010] In some embodiments, the main body and the wing are an integrated bag cloth, or the main body and the wing are independent bag cloths.

[0011] In some embodiments, the unfolded shape of the main body is a triangle or a rhombus, and the wing parts extend from both sides of the main body; the unfolded shape of the front and rear bag cloths is a straight strip or a node.

[0012] In some embodiments, the airbag bag also includes: a top sheet bag cloth, connecting the top ends of the front and rear sheet bag cloths and the top end of the top side sheet bag cloth; an inner sheet bag cloth, located inside the airbag bag, and the two opposite sides of the inner sheet bag cloth are respectively connected to the two ends of the front and rear sheet bag cloths; when the airbag bag is inflated, the inner sheet bag cloth pulls the connection between the top sheet bag cloth and the top ends of the front and rear sheet bag cloths inward to form a slip protection space.

[0013] In some embodiments, the air inlet of the airbag bag is formed between the top end of the top side sheet bag cloth and the top sheet bag cloth; and the air outlet of the airbag bag is formed at the wing portion.

[0014] In some embodiments, the pieces of bag cloth of the air bag are sewn together.

[0015] Another aspect of the present invention provides a top-mounted front airbag, which is configured with an airbag bag as described in any of the above embodiments; when the airbag bag is inflated, the top of the airbag bag is against the windshield, the rear of the airbag bag is against the instrument panel, and the front of the airbag bag faces the front seat.

[0016] The beneficial effects of the present invention compared with the prior art include at least:

[0017] The airbag bag of the present invention forms wing portions on both sides of the main body of the top side bag cloth, and the two wing portions are respectively connected to the two sides of the front and rear bag cloths, so that after the airbag bag is inflated, the wing portions serve as thickness supports of the airbag bag and form the sides of the airbag bag, effectively increasing the thickness of the airbag bag and making the overall contour of the airbag bag more three-dimensional and full, thereby enhancing the cushioning protection effect and energy absorption effect of the airbag bag, so that the airbag bag can provide good safety protection for the front occupants when applied to the top-mounted front airbag; in addition, the two ends of the main body of the top side bag cloth are respectively connected to the two ends of the front and rear bag cloths, and after the airbag bag is inflated, the front and rear bag cloths form the front and rear of the airbag bag, and the main body forms the top of the airbag bag, thus forming a complete airbag bag.

[0018] The shape and size of the wing can be adjusted as needed to adjust the thickness of the airbag bag, so that the airbag bag and the top-mounted front airbag of the present invention can be applied to different vehicle models and can adapt to different safety protection standards.

[0019] The airbag bag and the top-mounted front safety airbag of the present invention are particularly suitable for vehicles such as new energy vehicles, and can effectively provide safety protection for front-row passengers by utilizing the sufficient thickness of the airbag after it is deployed.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0022] Figure 1 A schematic diagram showing an application scenario of a top-mounted front airbag in a vehicle;

[0023] Figure 2 A schematic diagram showing an inflated state of an airbag bag in an embodiment of the present invention is shown;

[0024] Figure 3 Show Figure 2 A schematic diagram of the structure of each piece of bag cloth of the air bag shown;

[0025] Figure 4 A schematic diagram showing an inflated state of another air bag in an embodiment of the present invention is shown;

[0026] Figure 5 Show Figure 4 A schematic diagram of the structure of each piece of bag cloth of the air bag is shown. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments described herein. Instead, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.

[0028] The accompanying drawings are only schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and thus their repeated description will be omitted.

[0029] The terms "first", "second" and similar words used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. The orientation or position relationship indicated by the terms "top", "bottom", "front", "back" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, in the description of the present invention, when it is said that a certain device is "connected" to another device, this includes not only the case of direct connection, but also the case of indirect connection through other elements.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and features in different embodiments may be combined with each other.

[0031] Figure 2 The inflated state structure of an air bag in an embodiment of the present invention is schematically shown. Figure 3 Indicate Figure 2 The structure of each piece of bag cloth of the air bag shown in the figure, Figure 4 The figure shows another inflated state structure of an air bag in an embodiment of the present invention. Figure 5 Indicate Figure 4 The structure of each piece of bag cloth of the air bag shown. Figures 2 to 5 As shown, an airbag bag 10 for a top-mounted front airbag provided in an embodiment of the present invention comprises:

[0032] Front and rear piece bladder cloth 11;

[0033] The top side bag cloth 12 comprises a main body 121 and wing parts 122 located at both sides of the main body 121, two ends (121a, 121b) of the main body 121 are respectively connected to two ends (11a, 11b) of the front and rear bag cloths 11, and two wing parts 122 are respectively connected to two sides of the front and rear bag cloths 11;

[0034] When the airbag 10 is inflated, the front and rear bag fabrics 11 form the front 10a and rear 10b of the airbag 10 , the main body 121 forms the top 10c of the airbag 10 , and the wing 122 serves as a thickness support for the airbag 10 and forms the side of the airbag 10 .

[0035] Combination Figure 1 The application scenario of the roof-mounted front airbag in a vehicle is shown, in which the front portion 10a of the airbag bag 10 faces the front passenger 20, the rear portion 10b of the airbag bag 10 is against the instrument panel 30, the top 10c of the airbag bag 10 is against the windshield 40, and the side of the airbag bag 10 is located between the front portion 10a and the rear portion 10b, forming a thickness T of the airbag bag 10.

[0036] The airbag bag 10 of the present invention has wing portions 122 formed on both sides of the main body 121 of the top side sheet bag cloth 12, and the two wing portions 122 are respectively connected to the two sides of the front and rear sheet bag cloth 11, so that after the airbag bag 10 is inflated, the wing portions 122 serve as thickness supports of the airbag bag 10 and form the side portions of the airbag bag 10, effectively increasing the thickness T of the airbag bag 10, making the overall contour of the airbag bag 10 more three-dimensional and full, thereby enhancing the cushioning protection effect and energy absorption effect of the airbag bag 10, and making the airbag bag 10 When applied to a top-mounted front airbag, the front passenger 20 can be well protected; in addition, the two ends (121a, 121b) of the main body 121 of the top side bag cloth 12 are respectively connected to the two ends (11a, 11b) of the front and rear bag cloths 11. After the airbag bag 10 is inflated, the front and rear bag cloths 11 form the front part 10a and the rear part 10b of the airbag bag 10, and the main body 121 forms the top 10c of the airbag bag 10, so that a complete airbag bag 10 is formed.

[0037] The shape and size of the wing 122 can be adjusted as needed to adjust the thickness T of the airbag bag 10, so that the airbag bag 10 and the top-mounted front airbag of the present invention can be applied to different vehicle models and can adapt to different safety protection standards.

[0038] For example, in C-NCAP (China New Car Assessment Program) 2024, the FRB (frontal 100% overlap rigid barrier) collision test speed is increased from 50km / h to 55km / h; the use of a top-mounted front airbag equipped with the airbag bag 10 provided by the present invention can effectively comply with the test specifications and improve the safety protection effect.

[0039] In some embodiments, the wing portion 122 has a first arcuate edge 122 a ; when the airbag 10 is fully inflated, the first arcuate edge 122 a and a portion of the front and rear bladder fabrics 11 form an arcuate convex front contour of the airbag 10 .

[0040] The first arcuate edge 122 a of the wing portion 122 is connected to part of the side edges of the front and rear bag fabrics 11 , so that the front portion 10 a of the airbag bag 10 forms an arcuate convex contour after inflation, thereby providing effective buffering protection for the front seat occupant 20 .

[0041] The curvature of the first curved edge 122a can be adjusted as needed to adjust the degree of arcuate convexity of the front portion 10a of the airbag bag 10; the greater the curvature of the first curved edge 122a, the greater the arcuate convexity of the front portion 10a of the airbag bag 10 after inflation. In addition, the length of the first curved edge 122a can be adjusted as needed to adjust the extension length of the front portion 10a of the airbag bag 10.

[0042] In a specific application scenario, the design parameters of the first arcuate edge 122a can be adjusted according to the required reserved space between the front portion 10a of the airbag bag 10 and the front occupant 20 after inflation, the cushioning protection of the airbag bag 10 for the front occupant 20 and other requirements.

[0043] In some embodiments, the wing portion 122 has a second arc-shaped edge 122 b ; when the airbag 10 is fully inflated, the second arc-shaped edge 122 b and a portion of the front and rear bladder fabrics 11 form a rear contour of the airbag 10 .

[0044] The second arcuate edge 122b of the wing 122 is connected to part of the side edges of the front and rear panel bag fabrics 11, so that the rear portion 10b of the airbag bag 10 after inflation forms a slight arcuate bulge or a relatively flat profile, so that the rear portion 10b of the airbag bag 10 can be stably attached to the instrument panel 30. The curvature and length of the second arcuate edge 122b can be adjusted as needed, so that the profile of the rear portion 10b of the airbag bag 10 after inflation meets the requirements.

[0045] Furthermore, in some embodiments, the free end 122 d of the wing 122 is formed into an arc shape; when the airbag 10 is fully inflated, the free end 122 d of the wing 122 and a portion of the front and rear bag fabrics 11 form an arc-shaped raised bottom contour of the airbag 10 .

[0046] The arc-shaped free ends 122d of the wings 122 are connected to part of the side edges of the front and rear panel bag fabrics 11, so that the bottom 10d of the airbag bag 10 after inflation forms an arc-shaped convex profile, so that the auxiliary wings 122 play a role in supporting the thickness T of the airbag bag 10. In addition, after inflation, the bottom 10d of the airbag bag 10 faces the legs of the front passenger 20, so that the legs of the front passenger 20 are better cushioned and protected.

[0047] In the above embodiments, the main body 121 and the wing 122 can be an integrated bag cloth, so that the top side bag cloth 12 can be cut and formed at one time. Alternatively, the main body 121 and the wing 122 can also be independent bag cloths, so that the wing 122 can be cut and formed by using the corners of the bag cloth to improve the utilization rate of the bag cloth.

[0048] In the above embodiments, the unfolded shape of the main body 121 can be a triangle or a rhombus, and the wing portions 122 extend from both sides of the main body 121. For example, Figure 3 The expanded shape of the main body 121 is shown as a triangle. Figure 5 The expanded shape of the main body 121 is shown as a rhombus, but the present invention is not limited thereto. The main body 121 can be formed into any suitable shape.

[0049] In the above embodiments, the front and rear bladder fabrics 11 are unfolded in a straight strip or segment shape. Figure 3 The front and rear bag cloths 11 are shown in the figure as being in a straight strip shape. Figure 5 The front and rear bag cloths 11 are shown in the figure as being in a segmented shape when unfolded, but the present invention is not limited thereto. The front and rear bag cloths 11 can be formed into any suitable shape.

[0050] Continue to combine Figures 1 to 5 As shown, in some embodiments, the airbag bag 10 also includes: a top sheet bag cloth 13, connecting the top ends 11a of the front and rear sheet bag cloths 11 and the top ends 121a of the top side sheet bag cloth 12; an inner sheet bag cloth 14, located inside the airbag bag 10, and two pairs of edges 140 of the inner sheet bag cloth 14 are respectively connected to the two ends (11a, 11b) of the front and rear sheet bag cloths 11; when the airbag bag 10 is inflated, the inner sheet bag cloth 14 pulls the connection between the top sheet bag cloth 13 and the top ends 11a of the front and rear sheet bag cloths 11 inward to form a slip protection space 100.

[0051] Through the sliding protection space 100 , when the vehicle collides, the head of the front passenger 20 can be inserted into and slide a suitable distance, thereby achieving safety protection for the head of the front passenger 20 .

[0052] In the above embodiments, the air inlet 110 of the airbag bag 10 is formed between the top end 121 a of the top side bag fabric 12 and the top end 13 a of the top bag fabric 13 ; the air outlet 120 of the airbag bag 10 is formed in the wing portion 122 .

[0053] The air inlet 110 of the airbag 10 is connected to the gas generator 110', and is used to inflate the airbag 10 at the moment of vehicle collision so that the airbag 10 pops out. The exhaust port 120 of the airbag 10 is used to deflate the airbag 10 after the airbag 10 is inflated, so as to absorb the collision kinetic energy by utilizing the exhaust throttling effect, and mitigate the impact on the face of the front passenger 20. In the present invention, the newly added wing 122 is used to provide a larger space for the exhaust port 120.

[0054] Furthermore, in the above-mentioned embodiments, the pieces of bag cloth of the airbag bag 10 are sewn together. Of course, with the improvement of the airbag manufacturing process, other methods can also be used to achieve the connection between the pieces of bag cloth.

[0055] Continue to combine Figures 1 to 5 As shown, an embodiment of the present invention further provides a top-mounted front safety airbag, which is configured with an airbag bag 10 as described in any of the above embodiments; wherein, when the airbag bag 10 is inflated, the top 10c of the airbag bag 10 is against the windshield 40, the rear 10b of the airbag bag 10 is against the instrument panel 30, and the front 10a of the airbag bag 10 faces the front passenger 20.

[0056] The top-mounted front airbag of the present invention is equipped with the above-mentioned airbag bag 10, and can use the wing portion 122 as a thickness support of the airbag bag 10, effectively increasing the thickness T of the airbag bag 10, making the overall contour of the airbag bag 10 more three-dimensional and full, thereby enhancing the cushioning protection effect and energy absorption effect of the airbag bag 10, so that the top-mounted front airbag can play a good safety protection role for the front passenger 20; and the shape and size of the wing portion 122 can be adjusted as needed to adjust the thickness T of the airbag bag 10, so that the top-mounted front airbag can be applied to different vehicle models and can adapt to different safety protection specifications.

[0057] The airbag bag 10 and the top-mounted front safety airbag of the present invention are particularly suitable for vehicles such as new energy vehicles, and can effectively provide safety protection for front-row passengers by utilizing the sufficient thickness of the airbag after it is deployed.

[0058] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An airbag bag for a top-mounted front airbag, characterized in that: include: Front and back piece sac cloth; The top side bag cloth comprises a main body and wing parts located at two sides of the main body, and the two wing parts are respectively connected to two sides of the front and rear bag cloths; A top sheet bag cloth, connecting the top ends of the front and rear sheet bag cloths and the top end of the main body of the top side sheet bag cloth, the other end of the main body being connected to the other end of the front and rear sheet bag cloths; An inner bag cloth is located inside the airbag bag, and two opposite sides of the inner bag cloth are respectively connected to two ends of the front and rear bag cloths; When the airbag bag is inflated, the front and rear bag cloths form the front and rear parts of the airbag bag, the main body forms the top of the airbag bag, the wing part serves as the thickness support of the airbag bag and forms the side of the airbag bag, and the inner bag cloth pulls the connection between the top bag cloth and the top ends of the front and rear bag cloths inward to form a slip protection space.

2. The airbag bag according to claim 1, characterized in that: The wing portion has a first arcuate edge; When the airbag bag is fully inflated, the first arc-shaped edge and a portion of the front and rear bag fabrics form an arc-shaped convex front contour of the airbag bag.

3. The airbag bag according to claim 1, characterized in that: The wing portion has a second arc-shaped edge; When the airbag bag is fully inflated, the second arc-shaped edge and a portion of the front and rear bag fabrics form the rear contour of the airbag bag.

4. The airbag bag according to claim 1, characterized in that: The free end of the wing is formed into an arc shape; When the airbag bag is fully inflated, the free ends of the wings and a portion of the front and rear bag fabrics form an arc-shaped raised bottom contour of the airbag bag.

5. The airbag bag according to claim 1, characterized in that: The main body and the wing are an integrated bag cloth, or the main body and the wing are independent bag cloths.

6. The air bag according to claim 1, characterized in that: The unfolded shape of the main body is a triangle or a rhombus, and the wings extend from both sides of the main body; The unfolded shape of the front and rear bag cloths is a straight strip or a node shape.

7. The airbag bag according to claim 1, characterized in that: The air inlet of the airbag bag is formed between the top end of the top side sheet bag cloth and the top sheet bag cloth; The exhaust port of the air bag is formed in the wing portion.

8. The airbag bag according to any one of claims 1 to 7, characterized in that: The pieces of bag cloth of the air bag are sewn together.

9. A top-mounted front airbag, characterized in that: The top-mounted front airbag is equipped with an airbag bag as described in any one of claims 1 to 8; When the airbag bag is fully inflated, the top of the airbag bag is against the windshield, the rear of the airbag bag is against the instrument panel, and the front of the airbag bag faces the front seat.

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