WO2018205899A1

WO2018205899A1 - Side wall component, airbag assembly shell and airbag assembly

Info

Publication number: WO2018205899A1
Application number: PCT/CN2018/085833
Authority: WO
Inventors: 张朋
Original assignee: 奥托立夫开发公司
Priority date: 2017-05-09
Filing date: 2018-05-07
Publication date: 2018-11-15
Also published as: CN207207993U

Abstract

Disclosed is an airbag assembly, comprising a side wall component (11) and an airbag assembly shell (40). The side wall component is used for the airbag assembly shell (40), and comprises: a plate-like main body (12) for composing a side wall of the airbag assembly shell (40), wherein a first strip-like extension part (13) and a second strip-like extension part (14) are respectively arranged at opposite ends (121, 122) of the plate-like main body (12); the first extension part (13) and the second extension part (14) respectively form a part cut from the plate-like main body (12) but still integrated with the plate-like main body (12); and the first extension part (13) and the second extension part (14) respectively remain integrated with the plate-like main body (12) on their edges close to the corresponding ends (121, 122) of the plate-like main body (12) but are separated from the plate-like main body (12) in the remaining parts. The airbag assembly shell (40), comprising a cover side wall component, of the airbag assembly, and the airbag assembly comprising a cover airbag assembly shell have the advantages of relatively light weight and low manufacturing costs.

Description

Side wall member, airbag module housing and airbag assembly

Technical field

The present invention relates to an airbag module for a vehicle airbag apparatus, and more particularly to a side wall member, an airbag module housing including the side wall member, and an airbag module including the airbag module housing.

Background technique

Existing automotive airbag assemblies typically include an air bag, a gas generator, and a housing that houses the various components described above. The airbag module is mounted to the airbag cover at the corresponding position of the vehicle. When an emergency collision occurs in the vehicle, the gas generator is activated in response to the output of the collision sensor, and the inflation gas is generated to inflate the airbag, and the airbag thus breaks the airbag cover into the vehicle compartment, thereby occupies the vehicle (for example, the driver and/or the passenger). Protect.

In particular, Figure 1 illustrates a prior art vehicle airbag assembly. As shown in FIG. 1, the vehicle airbag module 10 includes an airbag cover 1, a folded airbag 2, a pressure ring 3, a housing 4, a gas generator 5, a bracket 6, a nut 7, and a wire harness connected to the gas generator 5. 8. When installed, the upper portion of the gas generator 5 is sequentially inserted through the center through hole of the casing 4 and the pressure ring 3 into the center hole of the air bag 2, and the four bolts respectively protrude from the bottom hole of the air bag 2, and The mounting holes and the bracket 6 on the bottom plate of the casing 4 and the flange of the gas generator 5 are sequentially passed through, and finally fixed by the nut 7. Thus, the pressure ring 3 secures the bottommost layer of the air bag 2 to the bottom plate of the casing 4. When the vehicle collides or is subjected to an impact, the gas generator 5 receives a signal transmitted via a wire harness connected to the gas generator 5, thereby causing blasting. Then, the gas generated by the blasting will rapidly inflate the folded air bag 2, and the inflated air bag will expand, and even if the airbag cover 1 is broken into the vehicle compartment, the occupant in the passenger compartment is protected from the impact. s damage.

Next, a case 4' of the prior art will be described with reference to Fig. 2, which can be used for mounting, for example, a gas generator. As shown in Fig. 2, it is generally necessary to remove (e.g., by stamping) a portion of the material 4" on the base material to form a through hole during the manufacture of the housing 4' to facilitate installation of the gas generator. The removed material 4" is generally treated as a waste material, resulting in a low utilization rate of the material, thereby causing a high production cost of the casing. At the same time, the housing 4' of such a structure is heavy, and the cost of the corresponding mold for manufacturing the housing 4' is high.

Therefore, it is desirable to obtain an airbag module housing and an airbag module that are light in weight and inexpensive to manufacture.

Summary of the invention

The present invention provides a side wall member that has the advantage of saving raw materials, improving material utilization, and also reducing overall weight. Meanwhile, the present invention provides an airbag module housing including the above-described side wall member. Therefore, the airbag module casing of the present invention has an advantage of reducing the development cost of the mold in addition to the above advantages. In summary, the airbag module housing of the present invention has the advantages of light weight and low manufacturing cost. Further, the present invention also provides an airbag module including the airbag module housing.

According to an embodiment of the present invention, there is provided a side wall member for an airbag module housing, and comprising: a plate-shaped body for constituting a side wall of the airbag module housing; Stripped first and second extension portions are respectively disposed at opposite ends; the first extension portion and the second extension portion are respectively formed to be taken from the plate-shaped body but still with the plate a portion of the body that is integral; the first extension portion and the second extension portion are respectively integral with the plate-like body at their edges near the corresponding ends of the plate-like body, but in the remaining portion The plate-shaped body is separated.

According to a preferred embodiment of the invention, the first extension portion and the second extension portion are respectively bent toward the same side of the plate-like body and extend laterally.

According to a preferred embodiment of the invention, the angles of the first extension portion and the second extension portion are the same with respect to the side wall.

According to a preferred embodiment of the invention, the angle is 90°.

According to a preferred embodiment of the invention, at least one of the length and the width of the first extension portion and the second extension portion are identical.

According to a preferred embodiment of the invention, the first extension portion and the second extension portion are symmetrical with respect to a center of the side wall in the longitudinal direction.

According to a preferred embodiment of the invention, the side wall member further comprises a flange on the top side and/or the bottom side, the flange being formed as part of the plate-like body but still integral with the plate-like body Or formed as a part of bending a part of the plate-like body from the edge of the plate-shaped body to the side.

According to an embodiment of the present invention, there is provided an airbag module housing including: the first side wall member and the second side wall member, wherein the first side wall member and the second side wall member Opposite each other, a first extension of the first sidewall member is secured to a first extension of the second sidewall member, and a second extension of the first sidewall member is secured to the second a second extension of the sidewall member.

According to a preferred embodiment of the invention, the plate-like body of the first side wall member and the plate-like body of the second side wall member are parallel to each other.

According to a preferred embodiment of the invention, the first side wall member and the second side wall member are mirror symmetrical.

According to an embodiment of the present invention, there is provided an airbag module comprising: a gas generator; an airbag; and the foregoing airbag module housing.

According to a preferred embodiment of the invention, the airbag assembly further comprises an airbag cover disposed between the airbag and the airbag module housing and at least partially covering the airbag.

According to a preferred embodiment of the present invention, the airbag cover includes a bottom surface, a top surface, a front side surface, and a rear side surface, the bottom surface, the front side surface, and the rear side surface being fastened to the side wall member, the top A tear portion is provided on the face, and the tear portion is torn by the air bag during deployment of the air bag.

According to a preferred embodiment of the invention, the tearing portion of the airbag cover comprises a tear line.

DRAWINGS

The present invention is exemplarily explained by way of exemplary embodiments in the drawings, and will be described in detail below with reference to the accompanying drawings.

Figure 1 shows an assembly view of a prior art vehicle airbag.

2 is a schematic view showing a manufacturing process of a prior art airbag module housing.

Figure 3 shows a schematic view of a side wall member in accordance with one embodiment of the present invention.

Figure 4 illustrates an airbag module housing in accordance with one embodiment of the present invention.

Figure 5 illustrates an airbag module housing in accordance with a further embodiment of the present invention.

Figure 6 illustrates an airbag module housing in accordance with a further embodiment of the present invention.

Figure 7 is a plan view showing the deployment of an airbag cover in accordance with one embodiment of the present invention.

Figure 8 is a schematic illustration of an air bag assembly in a stowed condition, in accordance with one embodiment of the present invention.

Figure 9 is a schematic illustration of an air bag assembly in an unfolded state, in accordance with one embodiment of the present invention.

detailed description

Specific embodiments of the side wall member, the airbag module housing, and the airbag module according to the present invention will be described below with reference to the accompanying drawings. The following detailed description and the annexed drawings are intended to illustrate the embodiments of the invention

Furthermore, spatially relative terms such as "upper", "lower", "left", and "right", etc., are used to describe the relative positional relationship of the elements shown in the figures to the other. Therefore, spatially related terms can be applied to directions different from the directions shown in the drawings when used. It will be apparent that, although for ease of explanation, all of these spatially related terms refer to the directions shown in the drawings, those skilled in the art will appreciate that directions different from those shown in the drawings may be used.

Side wall member

Hereinafter, the side wall member 11 according to an embodiment of the present invention will be described with reference to FIG. Figure 3 shows a schematic view of a side wall member in accordance with one embodiment of the present invention.

The side wall member 11 can be used to form an airbag module housing. As shown in FIG. 3, the side wall member 11 includes a plate-like body 12 that can be used to form a side wall of the airbag module housing. The plate-like body 12 has opposite ends, that is, a first end portion 121 and a second end portion 122. The plate-like body 12 is provided at its

opposite ends

121 and 122 with two strip-shaped extensions, namely a first extension 13 at the first end 121 and a second at the second end 122 Extending portion 14. In the present embodiment, the first extension portion 13 and the second extension portion 14 are specifically substantially rectangular sheet-like. The rectangular sheet-like first extension portion 13 and the second extension portion 14 are respectively formed from the plate-like main body 12, that is, are taken from the same plate material of the plate-like main body 12, and are not integrally separated from the plate-like main body 12, but are It is still integral with the plate-like body 12. Specifically, the first extension portion 13 and the second extension portion 14 may be formed from the plate-like body 12 by a process such as punching, shearing, or the like. As can be clearly seen from Fig. 3, the edge of the first extension portion 13 near the first end portion 121 of the plate-like body 12 is kept integral with the plate-like body 12, while the remaining portion is separated from the plate-like body 12; The edge of the extension portion 14 near the second end portion 122 of the plate-like body 12 is integral with the plate-like body 12 while the remaining portion is separated from the plate-like body 12.

Further, in the present embodiment as shown in FIG. 3, the first extension portion 13 and the second extension portion 14 are specifically bent toward the same side of the plate-like body 12 and extend laterally, respectively. Therefore, the structure of the side wall member 11 is relatively simple, and the space occupied is small.

Therefore, as shown in FIG. 3, the side wall member 11 is substantially a U-shaped member as a whole. In other words, the side wall member 11 has a hollow structure in the up and down direction. The hollow structure can provide sufficient space for installation of other components (eg, dish-shaped gas generators) in the sidewall members. Further, after the rectangular extension-shaped first extension portion 13 and the second extension portion 14 are cut out from the plate-like main body 12, two rectangular corresponding openings are respectively formed on the plate-like main body 12. By appropriately selecting the sizes of the first and second extension portions, the weight of the side walls can be reduced without reducing the strength of the side wall members. Therefore, the side wall member of the present invention has a more reasonable overall structure.

Further, according to the present embodiment, the side wall member 12 further includes a flange 15 on the bottom side, which is also formed as a portion taken from the plate-like main body 12 but still integral with the plate-like main body 12, and can be, for example, stamped, A process such as shearing achieves the removal of the flange 15 from the plate-like body 12. The flange 15 can be used to secure other components (e.g., gas generators) to the sidewall members.

In addition to this, according to the present embodiment, a plurality of flanges 16 are also formed on the top side of the side wall member 12 for assisting in assembling the side wall member 12 into the airbag module housing. The airbag module housing is secured to the airbag cover (see reference numeral 1 of Figure 1) or other suitable location in the vehicle.

Therefore, the use of the side wall member of the present invention can save raw materials, improve material utilization, thereby reducing production costs, and also reducing overall weight.

Airbag module housing

Hereinafter, an airbag module housing 40 according to an embodiment of the present invention will be described with reference to FIG.

In the present embodiment, the airbag module housing 40 includes the first side wall member 11 and the second side wall member 11' in the above embodiment, and the first side wall member 11 and the second side wall member 11' are opposed to each other. In the embodiment shown in Figure 4, the first side wall member 11 and the second side wall member 11' are parallel and mirror symmetrical to each other. The first extension portion 13 of the first side wall member 11 is fastened to the first extension portion 13' of the second side wall member 11', thereby forming one side wall of the airbag module housing 40. The second extension portion 14 of the first side wall member 11 is fastened to the second extension portion 14' of the second side wall member 11', thereby forming the other side wall of the airbag module housing 40. Thereby, the airbag module case 40 having four side wall surrounding structures is formed.

The airbag module housing 40 according to the present invention may be composed of two side wall members which constitute the airbag module itself, as compared with the prior art exemplified by the airbag module housing 4' shown in Fig. 2. The two opposing side walls of the housing are assembled from a portion of the side wall members to form the other two opposing side walls of the airbag housing assembly. Therefore, the structure of the airbag module housing 40 of the present invention is simpler. Moreover, the airbag module housing 40 of the present invention has the advantages of saving raw materials, improving material utilization, and reducing overall weight. Since the first side wall member 11 and the second side wall member 11' can share the mold, the development cost of the mold can be reduced, and therefore, the production cost is further reduced.

Furthermore, Figure 5 shows a further embodiment of the invention. As shown in FIG. 5, the plurality of flanges 16 on the top side of the airbag module case 40 are formed by bending a part of the top of the side wall member outward, and have holes 161. A bolt can pass through the aperture 161 to secure the airbag module housing 40 to a suitable position on the vehicle.

Further, the flange 15 which is taken from the plate-like main body 12 but is still integrally formed with the plate-like main body 12 is only a preferred mode as the bottom wall of the airbag module case 40. Figure 6 shows a further embodiment of the invention. As shown in FIG. 6, the bottom wall of the airbag module housing is a substantially rectangular plate member which may be additionally connected (for example, welded) to the bottom side of the side wall member, or the rectangular plate member may be combined with the side wall. The members are formed by folding from the same substrate.

Airbag assembly

The present invention also provides an airbag module including a gas generator, an airbag, and the airbag module housing 40 in the above embodiment.

According to a preferred embodiment of the invention, the airbag module further comprises an airbag cover.

Fig. 7 is a plan view showing the deployment of the airbag cover 9 according to an embodiment of the present invention, and the airbag cover 9 will be described below with reference to Fig. 7.

As shown in FIG. 7, the airbag cover 9 includes a bottom surface 91, a top surface 92, a front side surface 93, and a rear side surface 94. The bottom surface 91, the front side surface 93, and the rear side surface 94 are fastened to the airbag module housing. Specifically, according to the present embodiment, the fastening hole 911 on the bottom surface 91 of the airbag cover 9 and the fastening hole 151 on the flange 15 of the bottom side of the airbag module case 40 (see FIG. 4) are fitted by bolts and fitted The bottom surface 91 can be fastened to the flange 15 on the bottom side of the airbag module housing 40 by screwing with a nut. According to the present embodiment, the front side surface 93 is provided with a plurality of holes 931, and the rear side surface 94 is also provided with a plurality of holes 941 which can be hung on the top side flange 16 of the airbag module housing 40 (see 3), therefore, the front side 93 and the rear side 94 are fastened to the airbag module housing by the cooperation of the holes and the flange. In addition, the top surface 92 is provided with a tear portion that includes a "work" shaped tear line that is torn by the air bag along the "work" shaped tear line during deployment of the air bag.

Hereinafter, the operation of the airbag module will be described with reference to Figs. 8 and 9. Fig. 8 is a schematic view of the airbag module in a stowed state according to an embodiment of the present invention, and Fig. 9 is a schematic view of the airbag module in an unfolded state according to an embodiment of the present invention.

As shown in Fig. 8, the airbag cover 9 is disposed between the airbag (not shown) and the airbag module casing 40, and in the accommodated state of the airbag, the airbag cover 9 completely covers the airbag to prevent the airbag from being The airbag module housing falls out.

As shown in Fig. 9, in the unfolded state of the airbag, the top surface 93 of the airbag cover 9 is torn at the tear portion. Specifically, the tear line included in the tear portion constitutes a weak region of the tear portion, and when the air bag is inflated and deployed by the gas generator, the inflated air bag exerts a force on the airbag cover covering the same. After the applied force reaches the limit that the weak area can withstand, the tear is torn by the balloon along the "work" shaped tear line, and the balloon continues to expand until it is deployed to its maximum extent. In this case, the airbag cover 9 partially covers the airbag at the bottom surface 91 and the side surface to provide a certain degree of support to the airbag and prevent the airbag from falling out of the airbag module housing, in particular, during the deployment of the airbag. Expand and expand in an undesired direction.

The airbag cover in the airbag module according to the present invention is not limited to the airbag cover in the above embodiment, and the airbag cover may have a different structure, for example, the tear portion may include an "H" shape, an "F" shape, or a "U" shape. Tear the line.

According to a preferred embodiment of the invention, the angles of the first extension portion 13 and the second extension portion 14 with respect to the side walls of the plate-like body 12 are the same and are 90°. This makes the space provided for the mounting of other members (for example, a dish-shaped gas generator) in the side wall member or the airbag module housing as large as possible, and simplifies the processing of the side wall member.

According to a preferred embodiment of the invention, the length and width of the first extension portion 13 and the second extension portion 14 are the same. And, the first extension portion 13 and the second extension portion 14 are symmetrical with respect to the center of the side wall of the plate-like body 12 in the longitudinal direction. It is therefore beneficial to further simplify the processing of the side wall members.

It will be understood by those skilled in the art that the side wall member of the present invention is not limited to use in an airbag module housing, and the side wall member can also be used in any occasion where it is necessary to support and/or fasten other members, such as a sensor case for a sensor or the like. body.

Those skilled in the art will appreciate that the first extension portion and the second extension portion are not limited to the definitions in the above embodiments. For example, the first extension portion and the second extension portion are not limited to a rectangular sheet shape, but may be an elongated shape such as an oblong shape or the like which is suitable to form a part of the side wall. In addition, the first extension portion and/or the second extension portion may be bent, twisted, stretched, etc., for example, so as to extend along the curve according to actual needs; the first extension portion and the second extension portion are opposite to the panel The angle of the side wall of the body is not limited to the same and is 90°, for example, the first and second extension portions may be obliquely extended with respect to the body of the side wall according to a specific shape of the finally formed airbag module case, and both The tilt angles can be different from each other. In addition, the length and width of the first extension portion and the second extension portion can be differently designed according to actual needs, and the first extension portion and the second extension portion are opposite to the plate-shaped body according to actual needs. The side walls are asymmetrical in the length direction.

Those skilled in the art will appreciate that the flange is not limited to being located on the bottom or top side of the side wall member, for example, the flange may also be disposed at other locations as needed for assembly.

Moreover, those skilled in the art can understand that the first side wall member and the second side wall member in the airbag module housing are not limited to being parallel to each other, for example, the two side wall members can be arranged to be different from each other according to actual needs. The relationship of the lines.

Those skilled in the art can understand that the first side wall member and the second side wall member in the airbag module housing are not limited to mirror symmetry. For example, the two side wall members can be designed to have different sizes according to actual needs.

Claims

A side wall member for an airbag module housing and comprising:

a plate-shaped body for constituting a side wall of the airbag module housing;

It is characterized in that

Providing strip-shaped first extending portions and second extending portions at opposite ends of the plate-shaped body;

The first extension portion and the second extension portion are respectively formed as a portion taken from the plate-shaped body but still integral with the plate-shaped body;

The first extension portion and the second extension portion are integrally held with the plate-like body at their edges near the corresponding ends of the plate-like body, respectively, but are separated from the plate-like body at the remaining portion.
The side wall member according to claim 1, wherein the first extending portion and the second extending portion are respectively bent toward the same side of the plate-like body and extend laterally.
The side wall member according to claim 2, wherein the first extension portion and the second extension portion have the same angle with respect to the side wall.
The side wall member according to claim 3, wherein the angle is 90°.
The sidewall member of claim 4, wherein at least one of a length and a width of the first extension portion and the second extension portion are the same.
The side wall member according to claim 5, wherein the first extension portion and the second extension portion are symmetrical with respect to a center of the side wall in the longitudinal direction.
The side wall member according to any one of claims 1 to 6, wherein the side wall member further includes a flange on a top side and/or a bottom side, the flange being formed from the plate-shaped body A portion that is taken out but still integral with the plate-like body or formed as a part that bends a part of the plate-shaped body from the edge of the plate-shaped body to the side.
An airbag module housing, comprising:

The side wall member according to any one of claims 1 to 7, the side wall member comprising a first side wall member and a second side wall member, wherein the first side wall member and the second side The wall members are opposite each other, the first extension portion of the first side wall member is fastened to the first extension portion of the second side wall member, and the second extension portion of the first side wall member is fastened to the a second extension of the second side wall member.
The airbag module case according to claim 8, wherein the plate-like body of the first side wall member and the plate-like body of the second side wall member are parallel to each other.
The airbag module housing of claim 9, wherein the first side wall member and the second side wall member are mirror symmetrical.
An air bag assembly includes:

The gas generator;

Airbag

It is characterized in that

Also included is an airbag module housing according to any one of claims 8 to 10.
The airbag module of claim 11, further comprising an airbag cover disposed between the airbag and the airbag module housing and at least partially covering the airbag.
The airbag module according to claim 12, wherein the airbag cover includes a bottom surface, a top surface, a front side, and a rear side, and the bottom surface, the front side, and the rear side are fastened to the side wall member The top surface is provided with a tearing portion that is torn by the airbag during deployment of the airbag.
The airbag module of claim 13, wherein the tear portion of the airbag cover comprises a tear line.