WO2017166882A1 - 安全气囊及安全气囊组件 - Google Patents

安全气囊及安全气囊组件 Download PDF

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Publication number
WO2017166882A1
WO2017166882A1 PCT/CN2016/113482 CN2016113482W WO2017166882A1 WO 2017166882 A1 WO2017166882 A1 WO 2017166882A1 CN 2016113482 W CN2016113482 W CN 2016113482W WO 2017166882 A1 WO2017166882 A1 WO 2017166882A1
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WO
WIPO (PCT)
Prior art keywords
airbag
folded
winding portion
winding
circumference
Prior art date
Application number
PCT/CN2016/113482
Other languages
English (en)
French (fr)
Inventor
王亮
张金
吴成
Original Assignee
奥托立夫开发公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 奥托立夫开发公司 filed Critical 奥托立夫开发公司
Priority to EP16896650.5A priority Critical patent/EP3412517B1/en
Priority to US16/089,437 priority patent/US10994693B2/en
Priority to JP2018546420A priority patent/JP6816161B2/ja
Priority to KR1020187022744A priority patent/KR102125036B1/ko
Publication of WO2017166882A1 publication Critical patent/WO2017166882A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/237—Inflatable members characterised by the way they are folded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/213—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle roof frames or pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic

Definitions

  • the present invention relates to automotive safety devices, and more particularly to airbags and airbag assemblies.
  • Airbags used in vehicles are an important device often used in vehicles to protect occupants from damage during an emergency.
  • a curtain airbag which is one of the airbags, is usually installed above the side door, at the edge of the vehicle structure below the inner roof panel, and is inflated when the vehicle is impacted, so that it is inflated along the side window or the like.
  • the vehicle side structure is inflated and deployed, and thereby the occupant is prevented from directly hitting the inside structure of the vehicle or being thrown out of the window to suffer serious injury.
  • An example of such a curtain airbag is shown in Figures 1 and 2. Specifically, FIG.
  • the curtain airbag 1 in the accommodated state is folded and housed in the vehicle side structure 3 when viewed in the direction of the vehicle length (that is, the direction in which the left-right direction of FIG. 1 is the vehicle width) (for example, The state in the space below the side door) and the inner top plate 2.
  • 2 shows that the curtain airbag 1 in the inflated expanded state in the vehicle length direction (ie, the left-right direction of FIG. 2) is deployed downward along the side structure 3 of the vehicle, thereby providing protection for the occupant in the occupant protection area.
  • FIG. 3 and 4 respectively show the folding manner of two types of airbags which are common in the prior art: a roll folding mode (as shown in FIG. 3) and an N-folding mode (as shown in FIG. 4).
  • Figure 3 shows a schematic side view of the airbag after folding through the roll. Since the airbag module that is wound in this manner is easy to maintain the outer shape, it can be maintained in shape without being additionally provided with a package such as an envelope when it is mounted to the vehicle. However, such a balloon assembly has a relatively large diameter and often cannot accommodate a limited installation space in a vehicle.
  • Figure 4 shows that the N-folded airbag has a relatively flat cross section and takes up less space in the vehicle, but requires an envelope 4 to maintain dimensions.
  • the envelope 4 since the outer circumference of the airbag is not flat after the N-folding, the envelope 4 usually needs to be surrounded by the entire extended length of the airbag. The airbag maintains the shape of the airbag, and therefore, the demand for the envelope makes it difficult to reduce the cost.
  • the airbag folded by the current airbag folding method occupies a large space of the vehicle, and the installation and fixing cost is high.
  • the present invention provides an airbag having an unfolded state and a stowed state, which is capable of providing protection for an occupant between an occupant and a vehicle when the airbag is in an inflated expanded state.
  • the airbag When the airbag is in the stowed state, it can be accommodated in a predetermined space in the vehicle; the airbag has at least a first end and a second end, and the first end is a free end of the airbag The second end portion is for fixing to a mounting position; the airbag has a folded portion and a winding portion when in the stowed state; wherein the folded portion is folded in an "N" shape by a portion of the airbag The winding portion surrounds the circumference of the folded portion such that the folded portion is completely enclosed inside the winding portion, and the first end portion is also located inside the winding portion.
  • the winding portion continues from the folded portion and integrally surrounds the circumference of the folded portion.
  • the winding portion branch includes a first winding portion and a second winding portion, the first winding portion continuing from the folding portion and surrounding the folding portion At least a portion of the circumference of the portion, the second winding portion is branched from the first winding portion and surrounds at least a portion of the circumference of the folded portion.
  • the first winding portion extends around at least a portion of the circumference of the folding portion
  • the direction is opposite to a direction in which the second winding sub-section extends around at least a portion of the fold.
  • the winding portion is only about one turn around the circumference of the folded portion.
  • the fold comprises the first end.
  • the fold comprises the first end.
  • the present invention also provides an airbag module comprising: a gas generator; and an airbag according to the present invention.
  • the airbag module further includes: mounting means for fixing the airbag to a corresponding mounting position, the mounting means being fixed to the second end of the airbag.
  • the mounting device is configured to surround a buckle of the airbag, a portion of the buckle being secured to the second end of the airbag module.
  • the airbag provided by the invention has the advantages of small space for occupying the vehicle, low installation and fixing cost, and the like.
  • FIG. 1 is a schematic view showing a mounting position of a prior art airbag 1 in a vehicle in a stored state as seen from a longitudinal direction of the vehicle;
  • Figure 2 is a view showing the position of the prior art airbag 1 in the vehicle in an unfolded state as seen from the vehicle width direction;
  • Figure 3 is a schematic side cross-sectional view showing the manner in which the airbag 1 of the prior art is folded;
  • Figure 4 is a schematic side cross-sectional view showing the N-folding manner of the prior art airbag 1;
  • Figure 5 shows a side cross-sectional view of an airbag 10 in accordance with a first embodiment of the present invention
  • Figure 6 shows a side cross-sectional view of an airbag 20 in accordance with a second embodiment of the present invention
  • Figure 7 illustrates a folding manner of the airbag 1 according to another embodiment of the present invention.
  • FIG. 8 illustrates a folding manner of an airbag 1 according to another embodiment of the present invention.
  • Figure 9 illustrates a folding manner of the airbag 1 according to another embodiment of the present invention.
  • Figure 10 shows a schematic view of a buckle for securing an airbag to a mounting position in accordance with the present invention.
  • 1 curtain airbag
  • 2 inner top panel
  • 3 vehicle side structure
  • 4 envelope
  • 10, 20, 30, 40, 50, 100 airbag
  • 12 second end portion
  • 13, 23, 33, 43, 53 folded portion
  • 14, 24, 34 winding portion
  • 142, 242, 442 Two winding sections
  • 240 branch position
  • 300 buckle.
  • 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.
  • the same or similar reference numerals denote the same or similar structures in the airbag.
  • Fig. 5 shows a schematic side cross-sectional view of an airbag 10 according to a first embodiment of the present invention.
  • the airbag 10 has a first end portion 11 and a second end portion 12.
  • One of the first end portion 11 or the second end portion 12 is used as a free end, and the other is used to fix the airbag 10 to a mounting position of the vehicle.
  • the first end 11 is the free end of the airbag 10 and the second end 12 is used to secure the airbag 10 to a predetermined mounting position within the vehicle.
  • the mounting position of the airbag 10 shown in FIG. 7 in the vehicle can be seen in the installation position of the curtain airbag 1 shown in FIGS. 1 and 2, that is, the airbag 10 is located under the side structure of the vehicle (for example, the side door) and the inner roof panel. In the space.
  • the airbag 10 shown in FIG. 5 is in a stowed state, and has a folded portion 13 and a winding portion 14.
  • the folded portion 13 is folded in an "N" shape by a part of the airbag 10, the winding portion 14 continues from the folded portion 13, and the winding portion 14 integrally and continuously surrounds the circumference of the folded portion 13.
  • the winding portion 14 is rounded around the circumference of the folded portion 13 such that the folded portion 13 is completely enclosed inside the winding portion 14, and the first end portion 11 is also located inside the winding portion 14. .
  • the winding portion 14 of the airbag 10 since the winding portion 14 of the airbag 10 according to this embodiment of the present invention completely surrounds the folded portion 13, the winding portion 14 which is a part of the airbag 10 itself can be utilized to maintain the shape of the airbag 10, and thus, The "N"-shaped folding is used to increase the compacting procedure of the folding to reduce the volume, and it is also possible to make the airbag 10 no longer need the envelope enough to keep the storage.
  • the shape of the airbag 10 in the state greatly reduces the cost of installing the fixed airbag 10.
  • the cross section of the airbag 10 including the folded portion 13 can be configured to be flat, optimizing the occupied space.
  • the airbag 10 When it is required that the airbag 10 is inflated and deployed, for example, when a vehicle accident occurs, the airbag 10 is inflated to expand downward along the vehicle side structure 3, and the first end portion 11 is deployed as a free end, thereby being in the occupant protection area. Provide protection for the occupants.
  • a part of the airbag may be folded in an "N" shape from the first end portion 11 into a folded portion 13, and then the remaining portion is folded around.
  • the portion 13 is wound to form the winding portion 14 so as to completely surround the folded portion 14 inside the winding portion 14, so that the first end portion is also located inside the winding portion 14.
  • Figure 6 shows a side cross-sectional view of an airbag 20 in accordance with a second embodiment of the present invention.
  • the second embodiment is basically the same as the technical solution of the first embodiment, and the difference is mainly that the winding portion 24 of the airbag 20 branches into the first winding portion 241 and the second winding portion 242.
  • the first winding portion 241 continues from the folded portion 23 and surrounds at least a portion of the circumference of the folded portion 23, and the second winding portion 242 branches from the first winding portion 241 and surrounds at least the circumference of the folded portion 23 portion.
  • the position 240 where the first winding section 241 and the second winding section 242 branch is taken as the origin, and the first winding section 241 surrounds at least the circumference of the folding section 23.
  • a portion of the direction of extension is opposite to the direction in which the second winding subsection 242 extends around at least a portion of the fold 23.
  • Both the first winding portion 241 and the second winding portion 242 collectively completely surround the folded portion 23, and the first end portion 21 is also located inside the winding portion 24.
  • the winding portion 24 of the airbag 20 includes a first winding portion 241 and a second winding portion 242. Since both the first winding portion 241 and the second winding portion 242 completely surround the folded portion 23, the airbag 20 no longer requires an envelope to maintain the shape in the accommodated state, thereby reducing the cost of installing the fixed airbag. . At the same time, the airbag 20 including the folded portion 23 has a flat cross section and a small space for occupying a vehicle.
  • the second winding portion 242 may be formed integrally with the first winding portion 241, or may be used as a separate component by, for example, stitching, bonding, or the like. It is mounted to the first winding section 241. For example, by mounting one end of the second winding portion 242 to a position of the first winding portion 241 near the second end of the air bag, and then winding the second winding portion 242 around the folded portion, thereby achieving Keep the air bag in a good condition.
  • the inflation deployment process of the airbag 20 according to this embodiment of the present invention is similar to that of the first embodiment and will not be described in detail herein.
  • a portion of the airbag may be folded in an "N" shape from the first end portion 21 into a folded portion 23, and then the remaining portion may be folded around.
  • the portion 23 is wound up to, for example, the branch point 240 to form the first winding portion 241, and the branch portion is continuously wound from the branch point 240 to form the second winding portion 242, thereby completely surrounding the folded portion in the winding portion
  • the inner side of the second portion 23 and the first end portion 23 are also located inside the winding portion 24.
  • the winding portion 14 is only about one turn around the circumference of the folded portion 13.
  • the winding portion 14 may also surround the circumference of the folded portion 13 by more than one or even more than one turn.
  • the winding portion 14 surrounds the circumference of the folded portion 13 by about two turns. In the case where the number of turns is large, the shape of the airbag in the folded storage state can be better maintained, but the deployment speed of the airbag may be adversely affected.
  • the first winding portion 241 surrounds the extending direction of at least a portion of the circumference of the folded portion 23 and the circumference of the second winding portion 242 around the folded portion 23. At least a portion of the extension direction is opposite.
  • the present invention is not limited to the embodiment shown in FIG.
  • the present invention may further include an embodiment as shown in FIG. 8, that is, an extending direction of the first winding portion 441 around at least a portion of the circumference of the folded portion 43 and a surrounding folding portion 43 of the second winding portion 442. At least a portion of the circumference of the circumference extends in the same direction.
  • the folded portion includes a first end as a free end, that is, at the time of manufacture, an "N"-shaped fold can be formed from the free end to form the folded portion.
  • an "N"-shaped fold can be formed from the free end to form the folded portion.
  • the present invention may also include the following figures The embodiment shown in Fig. 9, that is, the first end portion 51 is not included in the folded portion 53, and is not a part of the folded portion 53.
  • folding may be performed from a position away from the free end 51 to form the folded portion 53.
  • a part of the starting end of the free end 51 may be formed to be a part or even a circumference of the winding folded portion.
  • the object of the present invention can be achieved by forming the outermost winding portion around the circumference of the folded portion and having the first end portion located inside the winding portion.
  • the present invention also provides an airbag module.
  • the airbag module includes a gas generator and the airbag according to the foregoing embodiments.
  • the gas generator is used to inflate the airbag during detonation to inflate the airbag.
  • the airbag assembly may also include a buckle 300 for securing the airbag to a corresponding mounting position.
  • a schematic view of the vicinity of the buckle 300 is shown.
  • the airbag 100 is not fully shown, but only a section thereof near the buckle 300 is shown.
  • a portion of the buckle 300 is fixed to the second end of the airbag (not shown), and around the airbag 100, another portion of the buckle 300 protrudes through the opening of the buckle end so as to surround the outer circumference of the airbag, protruding
  • the part can be used to fix to the corresponding mounting position.
  • the buckle 300 can maintain the shape of the airbag 100, and the airbag module can be conveniently installed.
  • the airbag of the present invention itself can maintain a smooth and integral shape, it is possible to eliminate the need for an envelope and to make it possible to maintain the shape and mount using a simple device such as a buckle.
  • the mounting device of the airbag module is not limited to the above-mentioned buckle.
  • Those skilled in the art can employ any mounting device that can secure the airbag to a predetermined mounting position of the vehicle, as the case may be.
  • it may be by means of a concave, hook-like member, and/or by riveting, bonding, snapping, or the like.

Abstract

一种安全气囊及包括气体发生器和安全气囊的安全气囊组件。安全气囊（10,20,30,40,50,100）具有展开状态和收纳状态，在处于充气膨胀的展开状态时能够在乘员和车辆之间为乘员提供保护，而在处于收纳状态时能够被容纳在车辆内的预定空间中。该安全气囊（10,20,30,40,50,100）至少具有第一端部（11,21,51）和第二端部（12），第一端部（11,21,51）是安全气囊的自由端，第二端部（12）用于固定至安装位置，安全气囊（10,20,30,40,50,100）在处于收纳状态时具有折叠部（13,23,33,43,53）和卷绕部（14,24,34），其中，折叠部（13,23,33,43,53）由安全气囊的一部分以"N"字形折叠而成，卷绕部（14,24,34）围绕折叠部（13,23,33,43,53）的四周，使得折叠部（13,23,33,43,53）被完全包围在卷绕部（14,24,34）的内侧，并且第一端部（11,21,51）也位于卷绕部（14,24,34）的内侧。上述结构的安全气囊易于制造、占用车辆的空间小、安装固定成本低。

Description

安全气囊及安全气囊组件 技术领域
本发明涉及汽车安全装置，尤其涉及安全气囊及安全气囊组件。
背景技术
车辆中使用的安全气囊是车辆中经常采用的一种在紧急状况下保护车内乘员免受损伤的重要装置。作为安全气囊中的一种的帘式气囊通常安装于侧门上方，位于内顶板之下的车辆结构的边缘处，并且在车辆受到冲击时进行充气，使得其在充气状态沿着侧窗等车内的车辆侧面结构而膨胀展开，并且由此防止乘坐者直接撞击车辆的内侧结构或从车窗甩出而遭受严重伤害。图1和图2示出了这种帘式气囊的示例。具体地，图1示出沿着车辆长度的方向(即，图1的左右方向为车辆宽度的方向)观察时，处于收纳状态的帘式气囊1被卷折收纳在车辆侧面结构3(例如，侧门)和内顶板2下方的空间中的状态。图2示出在车辆长度方向上(即，图2的左右方向)处于充气膨胀的展开状态的帘式气囊1沿着车辆的侧面结构3向下展开，从而在乘员保护区域为乘员提供保护。
由于安全气囊的安装空间十分受限制，所以安全气囊通常是以卷成卷筒状或者以折叠并收纳的状态安装于车辆的特定空间中。图3和图4分别示出了现有技术中常见的两种安全气囊的卷折方式：卷折叠方式(如图3所示)和N折叠方式(如图4所示)。图3示出了经过卷折叠后的安全气囊的示意性侧视图。由于这种方式卷折成的气囊组件容易保持外部形状，因此，在将其安装到车辆时，不需要额外设置封套等封装件就可以保持其形状。但是这种气囊组件的直径相对较大，往往不能适应车辆中有限的安装空间。图4示出了经过N折叠后的安全气囊的横截面比较扁平，占用车辆空间小，但是需要封套4以保持尺寸。然而，由于N折叠后气囊的外周不平整，因此封套4通常需要在安全气囊的基本整个延伸长度上包围安全 气囊来维持安全气囊的形状，因此，对封套的需求导致难以降低成本。
因此，采用目前安全气囊的折叠方式进行折叠的安全气囊占用车辆的空间大，安装固定的成本高。
发明内容
为了解决上述问题，本发明提供了一种安全气囊，其具有展开状态和收纳状态，当所述安全气囊处于充气膨胀的展开状态时，其能够在乘员和车辆之间为乘员提供保护，当所述安全气囊处于收纳状态时，其能够被容纳在车辆内的预定空间中；所述安全气囊至少具有第一端部和第二端部，所述第一端部是所述安全气囊的自由端，所述第二端部用于固定至安装位置；所述安全气囊在处于收纳状态时具有折叠部和卷绕部；其中，所述折叠部由所述安全气囊的一部分以“N”字形折叠而成，所述卷绕部围绕所述折叠部的四周，使得所述折叠部被完全包围在所述卷绕部的内侧，并且所述第一端部也位于所述卷绕部的内侧。
根据本发明的一个实施例，所述卷绕部从所述折叠部延续，并一体连续地围绕所述折叠部的四周。
根据本发明的一个实施例，所述卷绕部分支为包括第一卷绕分部和第二卷绕分部，所述第一卷绕分部从所述折叠部延续，并围绕所述折叠部的四周的至少一部分，所述第二卷绕分部从所述第一卷绕分部分支，并围绕所述折叠部的四周的至少一部分。
其中，在以所述第一卷绕分部和所述第二卷绕分部分支的位置作为原点的情况下，所述第一卷绕分部围绕所述折叠部的四周的至少一部分延伸的方向与所述第二卷绕分部围绕所述折叠部的至少一部分延伸的方向相反。
优选地，所述卷绕部围绕所述折叠部的四周仅大约一圈。
优选地，所述折叠部包括所述第一端部。
优选地，所述折叠部包括所述第一端部。
本发明还提供了一种安全气囊组件，包括：气体发生器；和根据本发明的安全气囊。
根据本发明的一个实施例，安全气囊组件还包括：用于将所述安全气囊固定至相应的安装位置的安装装置，所述安装装置固定至所述安全气囊的所述第二端部。
优选地，所述安装装置构造为围绕所述安全气囊的环扣，环扣的一部分固定至所述气囊组件的所述第二端部。
本发明提供的安全气囊具有占用车辆的空间小、安装固定成本低等优点。
附图说明
以下参照附图详细介绍本发明：
图1示出从车辆长度方向观察，处于收纳状态的现有技术的安全气囊1在车辆中的安装位置的示意图；
图2示出从车辆宽度方向观察，处于展开状态的现有技术的安全气囊1在车辆中的位置的示意图；
图3示出现有技术的安全气囊1的卷折叠方式的示意性侧剖视图；
图4示出现有技术的安全气囊1的N折叠方式的示意性侧剖视图；
图5示出根据本发明第一实施例的安全气囊10的侧剖视图；
图6示出根据本发明第二实施例的安全气囊20的侧剖视图；
图7示出根据本发明另一个实施例的安全气囊1的折叠方式；
图8示出根据本发明另一个实施例的安全气囊1的折叠方式；
图9示出根据本发明另一个实施例的安全气囊1的折叠方式；
图10示出了根据本发明的用于将安全气囊固定到安装位置的环扣的示意图。
图中，1：帘式气囊；2：内顶板；3：车辆侧面结构；4：封套；10、20、30、40、50、100：安全气囊；11、21、51：第一端部；12：第二端部；13、23、33、43、53：折叠部；14、24、34：卷绕部；141、241、441：第一卷绕分部；142、242、442：第二卷绕分部；240：分支位置；300：环扣。
具体实施方式
以下将结合附图描述根据本发明的安全气囊的具体实施方式。下面的详细描述和附图用于示例性地说明本发明的原理，本发明不限于所描述的优选实施例，本发明的保护范围由权利要求书限定。
此外，空间相关术语(诸如“上”、“下”、“左”和“右”等)用于描述附图所示的元件与另一个元件的相对位置关系。因此，空间相关术语可以应用到使用时与附图所示的方向不同的方向中。显然，虽然为了易于说明，所有这些空间相关术语指的是附图所示的方向，但是本领域技术人员能够理解可以使用与附图中所示的方向不同的方向。相同或者相似的附图标记表示安全气囊中相同或者相似的结构。
以下，将结合附图来描述根据本发明的实施例的安全气囊。
第一实施例
图5示出根据本发明的第一实施例的安全气囊10的示意性侧剖视图。如图5所示，安全气囊10具有第一端部11和第二端部12。将第一端部11或者第二端部12中的一者作为自由端，而另一者用于将安全气囊10固定至车辆的安装位置。例如，在该实施例中，第一端部11是安全气囊10的自由端，第二端部12用于将安全气囊10固定至车辆内预定的安装位置。图7所示的安全气囊10在车辆中的安装位置可参见图1和图2所示的帘式气囊1的安装位置，即，安全气囊10位于车辆侧面结构(例如，侧门)和内顶板下方的空间中。
图5示出的安全气囊10处于收纳状态，其具有折叠部13和卷绕部14。折叠部13由安全气囊10的一部分以“N”字形折叠而成，卷绕部14从折叠部13延续，并且，卷绕部14一体连续地围绕折叠部13的四周。在第一实施例中，卷绕部14围绕折叠部13的四周约一圈，使得折叠部13被完全包围在卷绕部14的内侧，并且第一端部11也位于卷绕部14的内侧。
由于根据本发明该实施例的安全气囊10的卷绕部14完全包围折叠部13，因此，可以利用作为安全气囊10自身的一部分的卷绕部14来维持安全气囊10的形状，因此，即可以通过“N”字形折叠提高折叠的紧密程序来减小体积，而且也可以使得安全气囊10不再需要封套就足以保持收纳 状态下安全气囊10的形状，从而大幅度降低了安装固定安全气囊10的成本。与此同时，可以将包括折叠部13的安全气囊10的横截面配置为扁平，优化占用的空间。
当需要安全气囊10膨胀展开时，例如，发生车辆事故时，向安全气囊10充气使其沿着车辆侧面结构3向下膨胀展开，并且第一端部11展开成为自由端，从而在乘员保护区域为乘员提供保护。
此外，作为示例，在制造第一实施例所示的安全气囊10时，可以先从第一端部11开始以“N”字形折叠气囊的一部分成为折叠部13，然后接着将剩余的部分围绕折叠部13卷绕形成卷绕部14，以将折叠部完全包围在卷绕部14的内侧，从而第一端部也位于卷绕部14的内侧。
第二实施例
图6示出根据本发明的第二实施例的安全气囊20的侧剖视图。第二实施例与第一实施例的技术方案基本相同，区别主要在于安全气囊20的卷绕部24分支为第一卷绕分部241和第二卷绕分部242。第一卷绕分部241从折叠部23延续，并围绕折叠部23的四周的至少一部分，第二卷绕分部242从第一卷绕分部241分支，并围绕折叠部23的四周的至少一部分。
在如图6所示的实施例中，以第一卷绕分部241和第二卷绕分部242分支的位置240作为原点，则第一卷绕分部241围绕折叠部23的四周的至少一部分延伸的方向与第二卷绕分部242围绕折叠部23的至少一部分延伸的方向相反。第一卷绕分部241和第二卷绕分部242两者共同将折叠部23完全包围，并且第一端部21也位于卷绕部24的内侧。
根据本发明该实施例的安全气囊20的卷绕部24包括第一卷绕分部241和第二卷绕分部242。由于第一卷绕分部241和第二卷绕分部242两者完全包围折叠部23，因此，安全气囊20不再需要封套以保持收纳状态下的形状，从而降低了安装固定安全气囊的成本。与此同时，包括折叠部23的安全气囊20的横截面扁平，占用车量的空间小。
在本发明的第二实施例中，第二卷绕分部242可以和第一卷绕分部241形成为一体，或者也可以作为分立的部件而通过例如缝合、粘接等方 式安装到第一卷绕分部241。例如，可以通过将第二卷绕分部242的一端安装到第一卷绕分部241的靠近气袋的第二端的位置，然后将第二卷绕分部242卷绕折叠部，从而实现更好地保持气袋的收纳状态。
根据本发明该实施例的安全气囊20的膨胀展开过程与第一实施例相似，此处不再详细描述。
此外，作为示例，在制造第二实施例所示的安全气囊20时，可以先从第一端部21开始以“N”字形折叠气囊的一部分成为折叠部23，然后接着将剩余的部分围绕折叠部23卷绕直到例如分支点240以形成第一卷绕分部241，从分支点240开始将分支的部分继续卷绕形成第二卷绕分部242，从而将折叠部完全包围在卷绕部24的内侧，并且第一端部23也位于卷绕部24的内侧。
其他实施例
虽然前文描述了本发明的安全气囊的一些实施例，但是本发明不限于此，还可以有其他的实施方式。
作为本发明的第一实施例，如图5所示，卷绕部14围绕折叠部13的四周仅大约一圈。但是，本领域技术人员能够理解，卷绕部14也可以围绕折叠部13的四周超过一圈甚至多圈。例如，如图7所示，卷绕部14围绕折叠部13的四周大约两圈。在圈数较多的情况下，可以更好地维持气囊在折叠收纳状态下的形状，但是可能会不利地影响气囊的展开速度。
作为本发明的第二实施例，如图6所示，第一卷绕分部241围绕折叠部23的四周的至少一部分的延伸方向和第二卷绕分部242的围绕折叠部23的四周的至少一部分的延伸方向相反。但是，本领域技术人员能够理解，本发明不限于如图8所示的实施方式。例如，本发明还可以包括如图8所示的实施方式，即，第一卷绕分部441围绕折叠部43的四周的至少一部分的延伸方向和第二卷绕分部442的围绕折叠部43的四周的至少一部分的延伸方向相同。
在本发明的前述实施例中，折叠部包括作为自由端的第一端部，即在制造时，可以从自由端开始进行“N”字形折叠来形成折叠部。但是，本领域技术人员能够理解，本发明不限于此。例如，本发明还可以包括如图 9所示的实施方式，即，第一端部51未包含在折叠部53中，不是折叠部53的一部分。在此实施例中，例如在制造时，可以从离开自由端51一段距离的位置开始进行折叠以形成折叠部53。此外，自由端51为起点的一部分也可以形成为卷绕折叠部的一部分甚至四周。还可以理解的是，在此情况下，如果从自由端51到折叠部53的这部分足够长，也可以将其一部分形成为另一个折叠部。在这些情况下，均可以通过最外侧的卷绕部形成为围绕折叠部四周，并使得第一端部位于该卷绕部的内侧，来实现本发明的目的。
除了前文所述的安全气囊之外，本发明还提供了一种安全气囊组件。该安全气囊组件包括气体发生器和根据前述实施例所述的安全气囊。气体发生器用于引爆时向安全气囊充气，以使安全气囊充气展开。
更具体而言，安全气囊组件还可以包括用于将安全气囊固定至相应的安装位置的环扣300。如图10所示，示出了环扣300附近的示意图。在图10中，没有完整示出安全气囊100，而仅示出了其在环扣300附近的一段。环扣300的一部分固定至气囊的第二端部(图中未标示)，并且围绕安全气囊100，环扣300的另一部分穿过环扣端部的开口突伸从而围绕气囊的外周，突伸的部分可以用于固定至相应的安装位置。由此，环扣300可以保持安全气囊100的形状，并可以方便地安装气囊组件。
由于本发明的安全气囊本身可以保持光滑一体的外形，因此，可以无需封套，并且使得利用环扣这样简单的装置来保持形状和进行安装成为可能。
本领域技术人员能够理解，安全气囊组件的安装装置不限于上述的环扣。本领域的技术人员可以根据具体情况，采用任何可以将安全气囊固定至车辆预定的安装位置的安装装置。例如，可以根据具体应用场合，借助于凹形、钩状等的构件，和/或采用铆接、粘接、搭扣等方式。
如前所述，尽管说明中已经参考附图对本发明的示例性实施例进行了说明，但是本发明不限于上述具体实施方式，本发明的保护范围应当由权利要求书及其等同含义来限定。

Claims (10)

  1. 一种安全气囊，其具有展开状态和收纳状态，当所述安全气囊处于充气膨胀的展开状态时，其能够在乘员和车辆之间为乘员提供保护，当所述安全气囊处于收纳状态时，其能够被容纳在车辆内的预定空间中；
    所述安全气囊至少具有第一端部和第二端部，所述第一端部是所述安全气囊的自由端，所述第二端部用于固定至安装位置；
    所述安全气囊在处于收纳状态时具有折叠部和卷绕部；
    其中，所述折叠部由所述安全气囊的一部分以“N”字形折叠而成，所述卷绕部围绕所述折叠部的四周，使得所述折叠部被完全包围在所述卷绕部的内侧，并且所述第一端部也位于所述卷绕部的内侧。
  2. 根据权利要求1所述的安全气囊，其中，所述卷绕部从所述折叠部延续，并一体连续地围绕所述折叠部的四周。
  3. 根据权利要求1所述的安全气囊，其中，所述卷绕部分支为包括第一卷绕分部和第二卷绕分部，所述第一卷绕分部从所述折叠部延续，并围绕所述折叠部的四周的至少一部分，所述第二卷绕分部从所述第一卷绕分部分支，并围绕所述折叠部的四周的至少一部分。
  4. 根据权利要求3所述的安全气囊，其中，在以所述第一卷绕分部和所述第二卷绕分部分支的位置作为原点的情况下，所述第一卷绕分部围绕所述折叠部的四周的至少一部分延伸的方向与所述第二卷绕分部围绕所述折叠部的至少一部分延伸的方向相反。
  5. 根据权利要求1至4中任一项所述的安全气囊，其中，所述卷绕部围绕所述折叠部的四周仅大约一圈。
  6. 根据权利要求1至4中任一项所述的安全气囊，其中，所述折叠部包括所述第一端部。
  7. 根据权利要求5所述的安全气囊，所述折叠部包括所述第一端部。
  8. 一种安全气囊组件，包括：
    气体发生器；和
    根据权利要求1至7中任一项所述的安全气囊。
  9. 根据权利要求8所述的安全气囊组件，还包括：
    用于将所述安全气囊固定至相应的安装位置的安装装置，所述安装装置固定至所述安全气囊的所述第二端部。
  10. 根据权利要求9所述的安全气囊组件，其中，所述安装装置构造为围绕所述安全气囊的环扣，环扣的一部分固定至所述气囊组件的所述第二端部。
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KR20180100649A (ko) 2018-09-11
EP3412517B1 (en) 2020-10-28
JP2019507704A (ja) 2019-03-22
JP6816161B2 (ja) 2021-01-20
US20200298788A1 (en) 2020-09-24
KR102125036B1 (ko) 2020-06-19

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