阅读说明：本技术 框架式空心安全气囊和安全气囊装置 (Frame-type hollow airbag and airbag device ) 是由 夏允权 于 2020-03-04 设计创作，主要内容包括：本发明公开了框架式空心安全气囊和安全气囊装置,涉及汽车安全技术领域。该框架式空心安全气囊的一具体实施方式包括：内层布片和外层布片；其中,内层布片首尾相接形成内层柱面,外层布片首尾相接形成外层柱面,内层布片的边缘与外层布片的边缘缝合形成气囊,所述气囊充气膨胀后具有框架式空心结构。该实施方式结构简单,体积小,能够大大降低气囊织物的使用量和气体发生器火药的使用量,降低气囊制造成本。(The invention discloses a frame type hollow safety air bag and a safety air bag device, and relates to the technical field of automobile safety. One embodiment of the frame-type hollow airbag includes: an inner layer cloth piece and an outer layer cloth piece; the inner-layer cloth piece is connected end to form an inner-layer cylindrical surface, the outer-layer cloth piece is connected end to form an outer-layer cylindrical surface, the edge of the inner-layer cloth piece and the edge of the outer-layer cloth piece are sewn to form an air bag, and the air bag is of a frame type hollow structure after being inflated. The embodiment has simple structure and small volume, can greatly reduce the using amount of the airbag fabric and the using amount of the gas generator gunpowder, and reduces the manufacturing cost of the airbag.)

1. A frame-type hollow airbag, comprising: an inner layer cloth piece and an outer layer cloth piece; the inner-layer cloth piece is connected end to form an inner-layer cylindrical surface, the outer-layer cloth piece is connected end to form an outer-layer cylindrical surface, the edge of the inner-layer cloth piece and the edge of the outer-layer cloth piece are sewn to form an air bag, and the air bag is of a frame type hollow structure after being inflated.

2. A frame-type hollow airbag according to claim 1 wherein a non-through region is provided in said airbag, and a through region between two adjacent said non-through regions in a circumferential direction of said airbag forms a beam of said airbag.

3. A frame-type hollow airbag according to claim 2 wherein said non-through region comprises a missing region; the inner cylindrical surface is provided with a first inner missing region, the outer cylindrical surface is provided with a first outer missing region corresponding to the first inner missing region, and the edge of the first inner missing region and the edge of the first outer missing region are sewn to form the missing region.

4. A frame-type hollow airbag according to claim 2 wherein said non-through regions comprise single ply regions; the inner cylindrical surface is provided with a second inner missing area, and the edge of the second inner missing area is sewn with the corresponding position of the outer cylindrical surface to form the single-layer cloth area; or the outer layer cylindrical surface is provided with a second outer layer missing area, and the edge of the second outer layer missing area is sewn with the corresponding position of the inner layer cylindrical surface to form the single-layer cloth area.

5. A framed hollow airbag according to claim 4, wherein upon inflation of said airbag said single panel region faces the occupant.

6. A frame-type hollow airbag according to claim 2 wherein the length of the inner panel at the end of the beam is greater than the length of the outer panel.

7. A frame-type hollow airbag according to claim 2 wherein the outer panel of one of the beams of the airbag is outwardly bulged to form a receiving space for receiving an inflation port of a gas generator.

8. A framed hollow airbag according to claim 2, wherein said airbag includes a plurality of beams, at least one pair of adjacent beams of said plurality of beams having a drawstring disposed therebetween, said drawstring being adapted to adjust the thickness of said airbag after inflation of said airbag.

9. A frame-type hollow airbag according to any one of claims 1 to 8 wherein a vent hole is provided in said airbag.

10. An air-bag unit comprising an air-bag housing, a gas generator and a hollow frame-type air-bag according to any one of claims 1 to 9, said hollow frame-type air-bag being stored in said air-bag housing after being folded, said gas generator being adapted to inflate said hollow frame-type air-bag.

Technical Field

The invention relates to the technical field of automobile safety, in particular to a frame type hollow safety air bag and a safety air bag device.

Background

The airbag in the prior art is usually of an air bag type structure and has the following defects:

(1) the usage amount of the airbag fabric is large;

(2) the volume of the expanded air bag is large, so that the using amount of gunpowder of the gas generator is large.

Disclosure of Invention

In view of this, embodiments of the present invention provide a frame-type hollow airbag and an airbag device, which have simple structures and small sizes, and can greatly reduce the usage amount of airbag fabric and the usage amount of gas generator powder, and reduce the manufacturing cost of the airbag.

To achieve the above object, according to an aspect of an embodiment of the present invention, there is provided a frame-type hollow airbag including: an inner layer cloth piece and an outer layer cloth piece; the inner-layer cloth piece is connected end to form an inner-layer cylindrical surface, the outer-layer cloth piece is connected end to form an outer-layer cylindrical surface, the edge of the inner-layer cloth piece and the edge of the outer-layer cloth piece are sewn to form an air bag, and the air bag is of a frame type hollow structure after being inflated.

Optionally, a non-through region is provided in the airbag, and a cross beam of the airbag is formed along a through region between two adjacent non-through regions in the circumferential direction of the airbag.

Optionally, the non-through region comprises a deletion region; the inner cylindrical surface is provided with a first inner missing region, the outer cylindrical surface is provided with a first outer missing region corresponding to the first inner missing region, and the edge of the first inner missing region and the edge of the first outer missing region are sewn to form the missing region.

Optionally, the non-through region comprises a single ply region; the inner cylindrical surface is provided with a second inner missing area, and the edge of the second inner missing area is sewn with the corresponding position of the outer cylindrical surface to form the single-layer cloth area; or the outer layer cylindrical surface is provided with a second outer layer missing area, and the edge of the second outer layer missing area is sewn with the corresponding position of the inner layer cylindrical surface to form the single-layer cloth area.

Optionally, the single-layer panel area faces the occupant after the airbag is inflated.

Optionally, the length of the inner layer cloth piece at the end part of the cross beam is greater than that of the outer layer cloth piece.

Optionally, in one cross beam of the airbag, the outer layer cloth piece protrudes outwards to form a containing space for containing an inflation opening of the gas generator.

Optionally, the airbag comprises a plurality of cross beams, a drawstring is arranged between at least one pair of adjacent cross beams in the plurality of cross beams, and the drawstring is used for adjusting the thickness of the airbag after the airbag is inflated.

Optionally, a vent hole is provided on the balloon.

According to a second aspect of an embodiment of the present invention, there is provided an airbag apparatus including an airbag housing, a gas generator, and the hollow frame-type airbag according to the first aspect of an embodiment of the present invention, the hollow frame-type airbag being stored in the airbag housing after being folded, the gas generator being configured to inflate the hollow frame-type airbag.

One embodiment of the above invention has the following advantages or benefits: the air bag with the frame type hollow structure is formed by sewing the inner layer cloth piece and the outer layer cloth piece, the structure is simple, the size is small, the using amount of air bag fabric and gunpowder of the gas generator can be greatly reduced, and the manufacturing cost of the air bag is reduced.

Further effects of the above-mentioned non-conventional alternatives will be described below in connection with the embodiments.

Drawings

The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:

FIG. 1 is a schematic view of an inner layer panel and an outer layer panel in an embodiment of the present invention;

FIG. 2 is a schematic view of a framed hollow airbag according to an embodiment of the invention;

FIG. 3 is another schematic view of a framed hollow airbag of an embodiment of the invention;

FIG. 4 is a schematic sectional view of a framed hollow airbag in an embodiment of the invention;

FIG. 5 is a schematic view of a draw tape in an embodiment of the invention;

FIG. 6 is a schematic view showing an undeployed state of the airbag device in the embodiment of the invention;

FIG. 7 is a schematic view showing a deployed state of an airbag device in an embodiment of the invention;

FIG. 8 is a schematic view of an airbag being deployed in a scenario in which an airbag apparatus according to an embodiment of the invention is applied;

FIG. 9 is a schematic view of a fully deployed airbag in a scenario in which an airbag apparatus according to an embodiment of the present invention is applied;

fig. 10 is a schematic view of an airbag wrapping an occupant's head in a scenario in which an airbag apparatus according to an embodiment of the present invention is applied.

Detailed Description

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

According to an aspect of an embodiment of the present invention, there is provided a frame-type hollow airbag. As shown in fig. 1 to 5, a frame-type hollow airbag 100 includes: an inner layer fabric sheet 10 and an outer layer fabric sheet 20.

The inner layer cloth piece 10 is connected end to form an inner layer cylindrical surface, the outer layer cloth piece 20 is connected end to form an outer layer cylindrical surface, the edge of the inner layer cloth piece 10 and the edge of the outer layer cloth piece 20 are sewn to form an air bag, and the air bag is inflated and expanded to form a frame type hollow structure. During sewing, one or more sewing threads can be adopted.

Compared with the air bag type air bag in the prior art, the air bag with the frame type hollow structure is formed by sewing the inner layer cloth piece 10 and the outer layer cloth piece 20, the structure is simple, the volume is small, the use amount of air bag fabric and gas generator gunpowder can be greatly reduced, and the manufacturing cost of the air bag is reduced. In the process of inflating and expanding the air bag, the air flow moves along the circumferential direction of the air bag to fill the air bag in order, the inflating speed is high, and the inflating efficiency is high. During collision, the head of the passenger acts on the air bag to deform the frame-type hollow structure of the air bag, and the deformation can absorb and buffer the energy of the head movement of the passenger.

Non-through regions are provided in the airbag, and a cross member 30 of the airbag is formed along a through region between two adjacent non-through regions in the circumferential direction of the airbag. Non-through areas refer to areas that are not inflatable. The non-through area is arranged, so that the size of the airbag can be further reduced, the using amount of airbag fabric and the using amount of gas generator gunpowder are further reduced, the manufacturing cost of the airbag is reduced, and the inflation efficiency is improved.

In the collision process, the head of a passenger acts on the air bag, so that the frame type hollow structure of the air bag is deformed, and the frame can wrap the head of the passenger to limit the left and right movement of the head. Particularly for Offset collision (ODB), Small Offset (Small Offset Barrier), such an airbag can wrap and capture the head of an occupant, restrict the side-to-side movement of the head, and prevent the head from sliding off the sides of the airbag and hitting the hard structure.

In some alternative embodiments, the non-pass-through region includes a deletion region 40, as shown in fig. 2 and 3. As shown in fig. 1, the inner cylindrical surface has a first inner layer missing region 11, the outer cylindrical surface has a first outer layer missing region 21 corresponding to the first inner layer missing region 11, and the edge of the first inner layer missing region 11 and the edge of the first outer layer missing region 21 are sewn together to form a missing region 40. The shape of the missing region 40 can be selectively set according to the actual situation, such as a circle, a rectangle, etc. The missing area is arranged, so that the using amount of the airbag fabric can be further reduced on the basis of reducing the size of the airbag, and further the cost is reduced.

In other alternative embodiments, the non-through areas comprise single ply areas 50, as shown in fig. 2 and 3. The single-layer fabric region means that only the region contains the outer layer fabric. As shown in fig. 1, the inner cylindrical surface has a second inner missing region 12, and the edge of the second inner missing region 12 is sewn to the corresponding position of the outer cylindrical surface to form a single-layer fabric region 50. It should be noted that the single cloth layer region 50 may be formed as follows: the outer layer cylindrical surface is provided with a second outer layer missing area, and the edge of the second outer layer missing area is sewn with the corresponding position of the inner layer cylindrical surface to form a single-layer cloth area. The single cloth layer area is arranged, so that the wrapping effect of the airbag on the head of a passenger can be improved on the basis of reducing the size of the airbag, and the safety is further improved. Further, as shown in FIGS. 8-10, upon inflation of the airbag, the single panel region 50 faces the occupant, thereby better wrapping and capturing the head of the occupant in the event of a collision, limiting head movement, and preventing the head from impacting the hard structure.

In an alternative embodiment, the length of the inner panel at the end of the beam 30 is greater than the length of the outer panel. The length refers to a dimension in the circumferential direction of the airbag. As shown in fig. 1, the bent portions of the inner layer fabric sheet 10 and the outer layer fabric sheet 20 correspond to both ends of the cross member 30. As can be seen from fig. 1, the length of the outer layer cloth piece 20 at the bending part is greater than that of the inner layer cloth piece 10. By making the length of the inner layer panels at the ends of the cross member 30 longer than the length of the outer layer panels, the cross member 30 can be naturally bent after the airbag is inflated (as shown in fig. 2 to 5, the cross member 30 is naturally bent) to closely contact the inner contour of the vehicle, thereby improving the safety of the airbag.

It should be noted that, although the airbag shown in the drawings includes three cross beams 30, the airbag may not include a cross beam 30 in the practical application process, or may include more than 1, 2, or 3 cross beams 30.

Alternatively, in one cross member 30 of the airbag, the outer layer fabric sheet 20 protrudes outward to form a receiving space for receiving an inflation port of the inflator. As shown in fig. 1, a portion 22 of the outer layer panel 20 is outwardly convex to form a receiving space 60, see fig. 2 and 3. The inflation inlet of the gas generator is arranged in the air bag, so that the unfolding direction of the air bag can be accurately controlled conveniently, and the protection effect of the air bag on passengers can be improved.

Optionally, the airbag comprises a plurality of cross beams, and a drawstring is arranged between at least one pair of adjacent cross beams in the plurality of cross beams, and the drawstring is used for adjusting the thickness of the inflated and expanded airbag. In an alternative embodiment shown in fig. 5, the airbag includes three beams, wherein a drawstring 80 is disposed between two adjacent beams for adjusting the thickness of the airbag after inflation. Generally, the longer the drawstring 80, the greater the thickness of the balloon after inflation.

In the embodiment of the invention, the air bag is set to be in a specific shape which is attached to and adapted to the surrounding environment of the vehicle body by optimizing the structures of the inner and outer fabric sheets and the number and positions of the drawstrings. This improves the occupant protection and protection of the airbag.

In an alternative embodiment shown in fig. 2 and 3, a vent 90 is provided in the bladder. In practical application, one or more vent holes can be arranged on two sides or the inner cloth piece and the outer cloth piece of the air bag. The exhaust damping force of the exhaust hole can greatly absorb the collision energy, and the collision kinetic energy is converted into the heat energy of the exhaust damping force to be dissipated into the air.

According to a second aspect of the embodiments of the present invention, there is provided an airbag device.

As shown in fig. 6, the airbag apparatus 200 includes an airbag housing 70, a gas generator for inflating the framed hollow airbag 100, and the framed hollow airbag 100 provided in the first aspect of the embodiment of the invention, the framed hollow airbag 100 being stored in the airbag housing 70 after being folded. Fig. 7 shows a schematic view of the frame-type hollow airbag 100 after deployment.

The air bag housing 70 may be configured to conform to and conform to the particular shape of the vehicle body environment, such as a spatially curved air bag housing, which saves space and allows the air bag housing to be more compactly mounted on the vehicle body.

The safety airbag device provided by the embodiment of the invention can be arranged on the PA (controller) side of a co-driver, and the local plastic tearing line of the airbag is designed at the unfolding position of an IP (instrument panel), so that the internal appearance of an automobile and the work of other parts are not influenced. After the air bag is ignited, the plastic tearing line is torn, so that the air bag is ejected from the IP. The airbag device provided by the embodiment of the invention can be popularized and applied to front collision (FRB) and offset collision (ODB and small offset) on all passenger vehicles such as any saloon car, SUV and MPV and partial small commercial vehicles in mass production.

The air bag with the frame-type hollow structure is formed by sewing the inner layer cloth piece and the outer layer cloth piece, has simple structure and small volume, can greatly reduce the using amount of air bag fabric and gunpowder of a gas generator, and reduces the manufacturing cost of the air bag.

The above-described embodiments should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.