WO2022237290A1 - 安全气囊和车辆 - Google Patents

安全气囊和车辆 Download PDF

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Publication number
WO2022237290A1
WO2022237290A1 PCT/CN2022/079886 CN2022079886W WO2022237290A1 WO 2022237290 A1 WO2022237290 A1 WO 2022237290A1 CN 2022079886 W CN2022079886 W CN 2022079886W WO 2022237290 A1 WO2022237290 A1 WO 2022237290A1
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WIPO (PCT)
Prior art keywords
airbag
fabric
piece
present
side flap
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Ceased
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PCT/CN2022/079886
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English (en)
French (fr)
Inventor
王挺
孟强
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Autoliv Development AB
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Autoliv Development AB
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Publication of WO2022237290A1 publication Critical patent/WO2022237290A1/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
    • 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
    • B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
    • 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
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • 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
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers

Definitions

  • the present invention relates to a safety device in a vehicle, in particular to an airbag, and also to a vehicle comprising the airbag.
  • airbags are widely used in existing vehicles as a safety device for protecting occupants.
  • the airbags include, for example, an airbag arranged in a steering wheel, an airbag arranged in an instrument panel, and a roof-mounted airbag arranged in a roof of a vehicle.
  • the gas generator of the airbag will receive a signal transmitted through the wire harness connected to the gas generator, thereby detonating.
  • the gas produced by the explosion will rapidly inflate the folded air bag of the safety airbag, and the inflated air bag will expand to protect the occupant from the injury caused by the impact.
  • the probability of frontal collision between two vehicles is low, while the front surface of the vehicle is obliquely collided, that is, the probability of oblique collision is relatively high.
  • the occupant's head and chest may slide away from the air bag's air bag, thereby no longer within the protective area of the air bag's air bag, and instead strike other structures within the vehicle interior and be injured. Therefore, the safety airbag in the prior art has low reliability and safety because it is difficult to ensure that the occupant is located in the protection area of the airbag during a collision.
  • the object of the present invention is to provide a safety airbag with high reliability and safety. Moreover, the safety airbag of the present invention can achieve the goals of simple structure and low manufacturing cost.
  • An aspect of the present invention provides an airbag comprising:
  • the air bag has an expanded state and a stored state
  • the airbag when in the deployed state, includes a first side flap, a second side flap and a descender connected together to define a recess, and the recess is adapted to receive the head of an occupant;
  • At least a portion of both the first side panel and the second side panel are formed from a first piece of fabric.
  • said first side flap, said second side flap and said descending portion are formed only by said first and second pieces of fabric.
  • the first side wing includes a first inner side for forming the depression
  • the second side wing includes a second inner side for forming the depression
  • the first An inner side and the second inner side are disposed adjacent to each other.
  • the descending portion is used to protect the belly of the passenger, and includes a first front facing the passenger, and the first front is respectively adjacent to the first inner side and the second inner side ground setting.
  • the first side flap and the second side flap are configured to form a first lobe and a second lobe, respectively, when in the deployed state.
  • the second piece of fabric is configured as a strip, and is located at least on the front side of the airbag in a deployed state.
  • the second piece of fabric is located on the front side, the lower side and the rear side of the airbag in the unfolded state.
  • the first front side of the descending portion is formed by the first piece of fabric.
  • a drawstring provided in the airbag, one end of the drawstring is configured to be connected to the front side of the airbag, and the other end of the drawstring is configured to Connected between the first side wing and the second side wing.
  • Another aspect of the present invention provides a vehicle including any one of the above-mentioned airbags, and the airbag is configured to be installed in an instrument panel of the vehicle.
  • FIG. 1(a) and 1(b) schematically show an airbag according to a first embodiment of the present invention.
  • FIG. 2 shows a method for manufacturing an airbag according to a first embodiment of the invention.
  • 3(a) and 3(b) show an airbag according to a second embodiment of the present invention.
  • FIG. 4 shows a method for manufacturing an airbag according to a second embodiment of the invention.
  • spatially relative terms such as “upper,” “lower,” “left,” and “right,” etc., are used to describe the relative positional relationship of one element to another as shown in the drawings. Accordingly, spatially relative terms may be applied in directions other than those shown in the figures when used. Obviously, while all these spatially relative terms refer to the directions shown in the figures for ease of illustration, those skilled in the art will understand that directions other than the directions shown in the figures may be used.
  • FIGS. 1(a) and 1(b) schematically show an airbag according to a first embodiment of the present invention.
  • An airbag according to an embodiment of the present invention will be described below with reference to FIGS. 1( a ) and 1 ( b ).
  • FIG. 1(a) and Fig. 1(b) are schematic diagrams of the airbag according to the first embodiment of the present invention when viewed from different directions.
  • an airbag according to an embodiment of the present invention includes an airbag 10 and a gas generator (not shown).
  • the air bag 10 has a deployed state and a stored state, and the gas generator is used to inflate the air bag 10 to inflate the air bag 10 into the deployed state.
  • the front side of the airbag 10 shown in Figure 1(b) will face the occupant when in use.
  • Fig. 1 (a) and Fig. 1 (b) it can be clearly observed that when the air bag 10 shown in Fig. 1 (a) and Fig.
  • the side wing 100 , the second side wing 200 and the descending part 300 are connected together to define a concave portion 400 , and the concave portion 400 is used to accommodate the head of a passenger.
  • both the first side wing 100 and the second side wing 200 include a side facing the passenger and a side facing away from the passenger, in other words, the first side wing 100 includes For forming the first inner side 100A of the concave portion 400, the second side flap 200 includes the second inner side 200A for forming the concave portion 400, and the first inner side 100A and the second inner side 200A are disposed adjacent to each other .
  • the lower parts of the adjacent sides of the first inner side 100A and the second inner side 200A are connected on the Together, and the upper portions of both adjacent sides are integrated and folded to some extent at this location to form the recessed portion 400 .
  • the descending portion 300 is used to protect the abdomen of the passenger, and includes a first front facing the passenger (ie, the side facing the passenger in FIG.
  • the inner side surfaces 200A are adjacently disposed.
  • the first front of the descending portion 300 there is no clear boundary between the first front of the descending portion 300 and the first inner side 100A and the second inner side 200A, which can be understood according to the position of the airbag 10 relative to the passenger That is, the part of the airbag 10 that can protect the belly of the passenger is considered as the descending portion 400 , and the side of the descending portion 400 facing the passenger is considered as the first front side.
  • first side flap 100 and the second side flap 200 are configured to form a first lobe and a second lobe, respectively, when in the deployed state. Also, at least a portion of both the first side flap 100 and the second side flap 200 are formed from a first piece of fabric W1, which will be described in more detail below with reference to FIG. 2 .
  • the head of the occupant basically moves synchronously with the vehicle before the collision event; Change.
  • the airbags are accelerated in a specific direction of the vehicle, that is, rearwards from the dashboard. Occupants may no longer move in sync with the vehicle, even restrained by modern three-point seat belts, since the crash event itself has changed the vehicle's direction of travel.
  • the occupant may be injured to some extent when impacting the air bag of the air bag.
  • an occupant's head may be rotationally accelerated relative to the spine by impacting an air bag of an air bag.
  • This rotational acceleration or deceleration could cause injury to the occupants.
  • the occupant's head may rotate or twist significantly, which may cause injury.
  • the airbag to have the function of reducing the rotational speed of the occupant's head during a collision event, so as to reduce the risk of traumatic head/brain injury caused by the rapid rotation of the occupant's head.
  • the airbag of the present invention has the above functions, which will be described in detail below.
  • a low fabric tension area and a high fabric tension area are generated in the recessed portion 400 .
  • the low fabric tension area is located at the portion where the first inner side 100A and the second inner side 200A of the airbag 10 are adjacent to each other, and the high fabric tension area is opposite to the adjacent portion of the two inner sides, in other words, the high fabric tension area
  • the tension zone is located at the ends of the first side flap 100 and the second side flap 200 away from each other (eg, the tip portion of the lobe). Areas of low fabric tension can reduce the likelihood that the airbag 10 will cause the occupant's head to spin.
  • the areas of high fabric tension provide support to prevent or limit the occupant from rushing out of the first side panel 100 or the second side panel 200 . Therefore, in the airbag of the present invention, the recess formed between the first side wing and the second side wing can receive the occupant's head, and provide support to the side of the head, so as to counteract the possibility of the head on the head being surrounded. Force that rotates the longitudinal axis of the head clockwise or counterclockwise.
  • the airbag of the present invention can ensure that the occupant is located in the protective area of the airbag during a collision, and can reduce the risk of traumatic head/brain injury caused by the rapid rotation of the occupant's head, thus having high reliability and safety sex.
  • the first side flap, the second side flap and the descending portion are connected together to define the recess, and at least a part of both the first side flap and the second side flap are formed by the first piece of fabric, therefore, the safety feature of the present invention
  • the airbag also has the characteristics of simple structure and low manufacturing cost.
  • FIG. 2 shows a method for manufacturing an airbag according to a first embodiment of the invention. A method of manufacturing an airbag according to a first embodiment of the present invention will be described below with reference to FIG. 2 .
  • first piece of fabric W1 in the unfolded state is configured to include a left part that will be used to form the first side flap 100 and a right part that will be used to form the second side flap 200 .
  • second piece of fabric W2 is configured to form the front side, which can be understood as the side facing the windshield of the vehicle, that is, the side where the airbag 10 is not seen in FIG. 1( b ).
  • the third piece of fabric W3 configured as a drawstring for forming the inner side of the airbag 10 .
  • a second piece of fabric W2 is provided, which is configured as a strip and is located at least on the front side of the airbag in the unfolded state; markings D1, D2, D3, D4, D5 on the second piece of fabric W2 and D6 a total of six feature points;
  • edge A1A2 is folded in half to overlap with edge A2A3, then edge A1A2 and edge A2A3 are connected (for example, stitched or glued) together;
  • the dotted line S1 in (b) indicates;
  • Curve C1C2C3C4 and curve D1D2D3D4 are connected (for example, sewn or bonded) together, the other end of the third piece of fabric W3 is connected to, for example, the middle portion of the second piece of fabric W2, and curve C4C5C6C7 and curve D1D6D5D4 are connected ( For example, stitched or bonded) together; and, the connection is schematically represented by dashed line S3 in Fig. 1(a) and Fig. 1(b).
  • the above-described manufacturing method for manufacturing the airbag of the airbag of the present invention is only an example, and those skilled in the art can adjust or even delete the sequence of the steps of the above method according to the actual situation.
  • the front side in this invention means the front side in the front-back direction of a vehicle.
  • the first side flap 100, the second side flap 200 and the descending portion 300 are only composed of the first piece of fabric W1 and A second piece of fabric W2 is formed. Therefore, the number of fabric pieces used in the air bag 10 according to the embodiment of the present invention is small, and the structure is simple and easy to manufacture.
  • the first front side of the descending portion 300 is formed by the first piece of fabric W1.
  • the second piece of fabric W2 is located on the front side and the lower side of the airbag in the deployed state.
  • FIGS. 3(a) and 3(b) show an airbag according to a second embodiment of the present invention.
  • An airbag according to a second embodiment of the present invention is shown below with reference to FIGS. 3( a ) and 3 ( b ). It should be noted that, the following description only focuses on the points different from the first embodiment, and the same points are not described again to avoid redundancy.
  • two dashed lines S3 are connected with the dashed line S1 at both ends of the dashed line S1, so that in the unfolded state, the second sheet
  • the fabric is connected to the front side, the lower side and the entire rear side of the airbag 10' via the dotted line S3, and accordingly, the first front side of the descender 300 is partially formed by the second fabric. It can be clearly observed that by designing the expanded shapes of the second fabric and the first fabric differently, airbags with different expanded shapes can be obtained.
  • FIG. 4 shows a method for manufacturing an airbag according to a second embodiment of the invention. A method of manufacturing an airbag according to a second embodiment of the present invention will be described below with reference to FIG. 4 .
  • first piece of fabric W1' in the unfolded state is configured to include a left part which will be used to form the first side flap 100' and a right part which will be used to form the second side flap 200'.
  • second piece of fabric W2' is configured to form the front side, which can be understood as a side facing the windshield of the vehicle; and the third piece of fabric W3' is configured to form the inner side of the airbag 10' drawstring.
  • a first piece of fabric W1' is provided, and six characteristic points A1, A2, A3, B1, B2, and B3 are marked on the upper side of the first piece of fabric W1', wherein point A3 and point B1 coincide;
  • a second piece of fabric W2' is provided, which is configured as an elongated strip and is located at least on the front side of the airbag in the unfolded state; on the second piece of fabric W2', mark C1, C2, C3, C4, C5, C6, C7 and C8 have a total of eight feature points;
  • edge line B2B3 is folded in half to overlap with edge line B1B2, line B1B2 and edge line B2B3 are connected (for example, sewing or bonding) together afterwards;
  • the dotted line S1 (specifically a part of S1) in (b) indicates;
  • a third piece of fabric W3' connect one end of the third piece of fabric W3' to W1', for example, near the feature point A3/B1 of W1';
  • the above-described manufacturing method for manufacturing the airbag of the airbag of the present invention is only an example, and those skilled in the art can adjust or even delete the sequence of the steps of the above method according to the actual situation.
  • the front side in this invention means the front side in the front-back direction of a vehicle.
  • Another aspect of the present invention also provides a vehicle including any one of the above-mentioned airbags, and the airbag is configured to be installed in an instrument panel of the vehicle. It should be noted that the above advantages applicable to the airbag according to the present invention are also applicable to the vehicle including the airbag according to the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

一种安全气囊，包括：气袋（10，10'），其具有展开状态和收纳状态，气袋（10，10'）在处于展开状态时包括连接在一起以限定凹陷部（400）的第一侧翼（100，100'）、第二侧翼（200，200'）和下延部（300，300'），以及，凹陷部（400）用于容纳乘客的头部；其中，第一侧翼（100，100'）和第二侧翼（200，200'）两者的至少一部分由第一片织物（W1）形成。该安全气囊仅由两片织物形成，结构简单，制造方便，节约了成本。还提供了一种使用该安全气囊的车辆。

Description

安全气囊和车辆 技术领域
本发明涉及车辆中的安全装置，具体地，涉及安全气囊，以及，还涉及包括该安全气囊的车辆。
背景技术
在实际发生的交通事故中，两车碰撞的事故非常常见。因此，现有的车辆中广泛采用安全气囊作为保护乘员的安全装置。安全气囊包括，例如，布置在方向盘中的安全气囊，布置在仪表盘中的安全气囊，以及，布置在车辆顶部的顶置式安全气囊。当车辆发生碰撞或受到冲击时，安全气囊的气体发生器便会接收到经由连接到气体发生器的线束传送来的信号，从而发生爆破。接着，爆破所产生的气体将使安全气囊的被折叠的气袋迅速充气，充气后的气袋发生膨胀，以保护乘员免受冲击所带来的伤害。
然而，根据统计表明，两车发生正面碰撞的概率较低，而车辆前表面处被倾斜地碰撞，即，斜向碰撞发生的概率较高。在斜向碰撞期间，乘员的头部以及胸部可能滑动离开安全气囊的气袋，由此不再位于安全气囊的气袋的保护区域内，并且转而撞击到车辆内部的其他结构而受到伤害。因此，现有技术中的安全气囊由于难以确保碰撞期间乘员位于气袋的保护区域内，使得可靠性和安全性较低。
因此，期望一种具有较高的可靠性和安全性的安全气囊。
发明内容
本发明的目的是提供一种具有较高的可靠性和安全性的安全气囊。而且，本发明的安全气囊能够实现结构简单、制造成本低廉的目的。
本发明的一方面提供一种安全气囊，其包括：
气袋，其具有展开状态和收纳状态，
所述气袋在处于展开状态时包括连接在一起以限定凹陷部的第一侧翼、第二侧翼和下延部，以及，所述凹陷部用于容纳乘客的头部；
其中，
所述第一侧翼和所述第二侧翼两者的至少一部分由第一片织物形成。
根据本发明的实施例，所述第一侧翼、所述第二侧翼和所述下延部仅由所述第一片织物和第二片织物形成。
根据本发明的实施例，所述第一侧翼包括用于形成所述凹陷部的第一内侧面，所述第二侧翼包括用于形成所述凹陷部的第二内侧面，并且，所述第一内侧面和所述第二内侧面被彼此相邻地设置。
根据本发明的实施例，所述下延部用于保护乘客的腹部，并且包括面向乘客的第一正面，所述第一正面分别与所述第一内侧面、所述第二内侧面相邻地设置。
根据本发明的实施例，所述第一侧翼和所述第二侧翼被构造为当处于展开状态时分别形成第一凸角和第二凸角。
根据本发明的实施例，所述第二片织物被构造为长条形，并且在展开状态时至少位于所述安全气囊的前侧。
根据本发明的实施例，所述第二片织物在展开状态时位于所述安全气囊的前侧、下侧和后侧。
根据本发明的实施例，所述下延部的所述第一正面由所述第一片织物形成。
根据本发明的实施例，还包括设置在所述安全气囊内的拉带，所述拉带的一端被构造为连接到所述安全气囊的前侧，并且所述拉带的另一端被构造为连接到所述第一侧翼和所述第二侧翼之间。
本发明的另一方面提供一种车辆，其包括任一上述安全气囊，并且，所述安全气囊被构造为安装在所述车辆的仪表盘中。
附图说明
下面将参考附图来描述本发明示例性实施例的特征、优点和技术效果。在附图中，相同的符号标示相同的元件，其中：
图1(a)和图1(b)示意性地示出根据本发明第一实施例的安全气囊。
图2示出用于制造根据本发明第一实施例的安全气囊的方法。
图3(a)和图3(b)示出根据本发明第二实施例的安全气囊。
图4示出用于制造根据本发明第二实施例的安全气囊的方法。
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和车辆的具体实施方式。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，本发明描述的各个实施例既可以单独使用，也可以任意组合，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。
图1(a)和图1(b)示意性地示出根据本发明第一实施例的安全气囊。以下参照图1(a)和图1(b)描述根据本发明实施例的安全气囊。
图1(a)和图1(b)分别是从不同方位观察时，根据本发明第一实施例的安全气囊的示意图。如图1(a)和图1(b)所示，根据本发明实施例的安全气囊包括气袋10和气体发生器(未示出)。气袋10具有展开状态和收纳状态，以及，气体发生器用于对气袋10充气以使气袋10膨胀而进入展开状态。为了清楚地看到气袋10的结构，图1(a)和图1(b)中示出的气袋10处于展开状态，并且，图1(a)示出的气袋10的右前侧面以及图1(b)中示出的气袋10的正面在使用时将面对乘员。
继续参照图1(a)和图1(b)，能够清楚地观察到，在图1(a)和图1(b)中示出的气袋10处于展开状态时，气袋10包括第一侧翼100、第二侧翼200和下延部300。第一侧翼100、第二侧翼200和下延部300连接在一起以限定凹陷部400，以及，该凹陷部400用于容纳乘客的头部。 具体地，如图1(a)和图1(b)，相对于乘客，第一侧翼100和第二侧翼200两者均包括面向乘客的侧面和背离乘客的侧面，换言之，第一侧翼100包括用于形成凹陷部400的第一内侧面100A，第二侧翼200包括用于形成凹陷部400的第二内侧面200A，并且，第一内侧面100A和第二内侧面200A被彼此相邻地设置。例如，在图1(a)和图1(b)所示的第一实施例中，第一内侧面100A和第二内侧面200A的相邻侧边的下部经由例如第二缝线S2连接在一起，以及，两者相邻侧边的上部为一个整体并且在该位置发生一定程度的折叠，以形成凹陷部400。此外，下延部300用于保护乘客的腹部，并且包括面向乘客的第一正面(即，图1(b)中面向乘客的一面)，该第一正面分别与第一内侧面100A、第二内侧面200A相邻地设置。在根据本发明的第一实施例中，下延部300的第一正面与第一内侧面100A和第二内侧面200A之间没有明确的分界，可以根据气袋10相对于乘客的位置进行理解，即，气袋10能够保护乘客的腹部的部分被认为是下延部400，以及，该下延部400的面向乘客的一面被认为是第一正面。
此外，如图1(a)所示，第一侧翼100和第二侧翼200被构造为当处于展开状态时分别形成第一凸角和第二凸角。并且，该第一侧翼100和第二侧翼200两者的至少一部分由第一片织物W1形成，这将在下文参照图2进行更详细的描述。
当以上安全气囊安装在例如仪表盘中对前排乘客进行保护时，在发生碰撞事件之前，乘员的头部基本与车辆同步运动；在碰撞事件期间，车辆的行进方向和速度可能剧烈而突然地改变。当这种碰撞触发安全气囊展开气袋时，气袋在车辆的特定方向上加速，也就是说，从仪表盘向后展开。由于碰撞事件本身已经改变了车辆的行驶方向，所以即使受到现代三点式安全带的限制，乘员也可能不再与车辆同步运动。此外，乘员冲击安全气囊的气袋时可能受到某种程度的损伤。例如，乘员的头部可能由于冲击安全气囊的气袋而相对于脊柱旋转加速。这种旋转加速度或减速度可能对乘员造成伤害。换句话说，当乘员冲击安全气囊的气袋时，乘员的头部可能发生显著的旋转或扭转，这可能会引起伤害。例如，当前排乘客在碰撞事 件期间向前方向移动并撞击安全气囊的气袋时，乘员的头部可能以相当大的力绕头部的纵轴旋转。因此，需要安全气囊在碰撞事件期间具有降低乘员头部旋转速度的功能，以降低乘员头部快速旋转造成的创伤性头部/脑部损伤风险。本发明的安全气囊具有上述功能，这将在下文进行详细介绍。
如图1(a)和图1(b)所示，在本发明的安全气囊的气袋10中，在凹陷部400内产生低织物张力区域和高织物张力区域。具体地，低织物张力区域位于气袋10的第一内侧面100A和第二内侧面200A彼此相邻的部分处，以及，高织物张力区域与两内侧面相邻的部分相对，换言之，高织物张力区域位于第一侧翼100和第二侧翼200彼此远离的端部(例如，凸角的尖端部分)处。低织物张力区域可以减小气袋10引起乘员的头部旋转的可能性。高织物张力区域提供支撑，以防止或限制乘员冲出第一侧翼100或第二侧翼200。因此，在本发明的安全气囊中，第一侧翼和第二侧翼之间形成的凹陷部可以接纳乘员的头部，并且向头部侧面提供支撑，以抵消头部上的可能导致头部在围绕头部的纵轴顺时针或逆时针旋转的力。
因此，本发明的安全气囊能够确保碰撞期间乘员位于气袋的保护区域内，并且能够降低乘员头部快速旋转造成的创伤性头部/脑部损伤风险，由此具有较高的可靠性和安全性。与此同时，第一侧翼、第二侧翼和下延部连接在一起以限定凹陷部，并且，第一侧翼和第二侧翼两者的至少一部分由第一片织物形成，因此，本发明的安全气囊还具有结构简单，制造成本低廉的特点。
图2示出用于制造根据本发明第一实施例的安全气囊的方法。以下参照图2描述根据本发明第一实施例的安全气囊的制造方法。
如图2所示，提供三片织物，即，第一片织物W1，第二片织物W2和第三片织物W3。展开状态下的第一片织物W1被构造为包括左部和右部，左部将用于形成第一侧翼100，右部将用于形成第二侧翼200。此外，第二片织物W2被构造为用于形成前侧面，该前侧面可以理解为面向车辆挡风玻璃的一侧面，即，图1(b)中所示气袋10不被看到的一侧面；以及，第三片织物W3被构造为用于形成气囊10内侧的拉带。
本发明第一实施例的安全气囊的气袋的制造方法如下：
提供第一片织物W1，在第一片织物W1的上侧边标记A1、A2、A3、B1、B2、B3共六个特征点，其中，A3点和B1点重合；
在第一片织物W1的下侧边标记C1、C2、C3、C4、C5、C6和C7共七个特征点；
提供第二片织物W2，该第二片织物W2被构造为长条形，并且在展开状态时至少位于安全气囊的前侧；在第二片织物W2上标记D1、D2、D3、D4、D5和D6共六个特征点；
使点A1和点A3重合，将边线A1A2对折以与边线A2A3重叠，之后将边线A1A2和边线A2A3连接(例如，缝合或粘接)在一起；以及，该连接由图1(a)和图1(b)中的虚线S1表示；
使点B1和点B3重合，将边线B2B3对折以与边线B1B2重叠，之后将线B1B2和边线B2B3连接(例如，缝合或粘接)在一起；以及，该连接由图1(a)和图1(b)中的虚线S1表示；
提供第三片织物W3，将第三片织物W3的一端连接到近W1处，例如W1的特征点A3/B1附近处；
将边线A1C1和边线B3C7连接(例如，缝合或粘接)在一起；以及，该连接由图1(a)和图1(b)中的虚线S2表示；
将曲线C1C2C3C4和曲线D1D2D3D4连接(例如，缝合或粘接)在一起，将第三片织物W3的另一端连接到第二片织物W2的例如中间部分处，以及，将曲线C4C5C6C7和曲线D1D6D5D4连接(例如，缝合或粘接)在一起；以及，该连接由图1(a)和图1(b)中的虚线S3示意性地表示。
需要说明的是，以上描述的用于制造本发明的安全气囊的气袋的制造方法仅仅是示例，本领域技术人员可以根据实际情况对以上方法的各个步骤的顺序进行调整甚至删减。以及，本发明中的前侧是指车辆的前后方向上的前侧。
结合图1(a)、图1(b)和图2所示，在根据本发明第一实施例中，第一侧翼100、第二侧翼200和下延部300仅由第一片织物W1和第二片织物W2形成。因此，根据本发明实施例的气袋10所使用的织物片的数量 较少，结构简单且易于制造。
并且，下延部300的第一正面由第一片织物W1形成。此外，第二片织物W2在展开状态时位于安全气囊的前侧和下侧。当然这仅仅是示例，本领域技术人员可以根据所需气袋的形状对第二织物进行不同的设计，以及，下文将给出第二织物的不同设计中的一个示例。
图3(a)和图3(b)示出根据本发明第二实施例的安全气囊。以下参照图3(a)和图3(b)示出根据本发明第二实施例的安全气囊。需要说明的是，下文仅针对不同于第一实施例之处进行描述，相同之处不再描述以避免冗余。
如图3(a)和图3(b)所示，在根据本发明第二实施例中，两条虚线S3在虚线S1的两端处与虚线S1连接，使得在展开状态时，第二片织物经由虚线S3连接到气囊10′的前侧、下侧和整个后侧，以及相应地，下延部300的第一正面部分地由第二织物形成。能够清楚的观察到，通过将第二织物与第一织物之间两者的展开形状进行不同的设计，就能够得到具有不同展开形状的气袋。
图4示出用于制造根据本发明第二实施例的安全气囊的方法。以下参照图4描述根据本发明第二实施例的安全气囊的制造方法。
如图4所示，提供三片织物，即，第一片织物W1′，第二片织物W2′和第三片织物W3′。展开状态下的第一片织物W1′被构造为包括左部和右部，左部将用于形成第一侧翼100′，右部将用于形成第二侧翼200′。此外，第二片织物W2′被构造为用于形成前侧面，该前侧面可以理解为面向车辆挡风玻璃的一侧面；以及，第三片织物W3′被构造为用于形成气囊10′内侧的拉带。
本发明第二实施例的安全气囊的气袋的制造方法如下：
提供第一片织物W1′，在第一片织物W1′的上侧边标记A1、A2、A3、B1、B2、B3共六个特征点，其中，A3点和B1点重合；
在第一片织物W1′的下侧边标记A6、A7、A8、B7和B6共五个特征点，在左侧标记A4、A5共两个特征点，在右侧标记B5、B4共两个特征点；
提供第二片织物W2′，该第二片织物W2′被构造为长条形，并且在展开状态时至少位于安全气囊的前侧；在第二片织物W2′上标记C1、C2、C3、C4、C5、C6、C7和C8共八个特征点；
使点A1和点A3重合，将边线A1A2对折以与边线A2A3重叠，之后将边线A1A2和边线A2A3连接(例如，缝合或粘接)在一起；以及，该连接由图3(a)和图3(b)中的虚线S1(具体为S1的一部分)表示；
使点B1和点B3重合，将边线B2B3对折以与边线B1B2重叠，之后将线B1B2和边线B2B3连接(例如，缝合或粘接)在一起；以及，该连接由图3(a)和图3(b)中的虚线S1(具体为S1的一部分)表示；
提供第三片织物W3′，将第三片织物W3′的一端连接到W1′处，例如W1′的特征点A3/B1附近处；
将边线A1A4和边线B3B5连接(例如，缝合或粘接)在一起；以及，该连接由图3(a)和图3(b)中的虚线S2表示；
将特征点A4、B5与C1对准，之后，曲线C1C2C3C4C5和曲线B5B4B6B7A8连接(例如，缝合或粘接)在一起，将第三片织物W3′的另一端连接到第二片织物W2′的例如中间部分处，以及，将曲线C1C8C7C6C5和曲线A4A5A6A7A8连接(例如，缝合或粘接)在一起；以及，该连接由图3(a)和图3(b)中的虚线S3示意性地表示。
需要说明的是，以上描述的用于制造本发明的安全气囊的气袋的制造方法仅仅是示例，本领域技术人员可以根据实际情况对以上方法的各个步骤的顺序进行调整甚至删减。以及，本发明中的前侧是指车辆的前后方向上的前侧。
本发明的另一方面还提供一种车辆，其包括任一上述安全气囊，并且，该安全气囊被构造为安装在车辆的仪表盘中。需要说明的是，以上适用于根据本发明的安全气囊的优点同样地适用于根据本发明的包括该安全气囊的车辆。
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，其包括：
    气袋(10，10′)，其具有展开状态和收纳状态，
    所述气袋(10，10′)在处于展开状态时包括连接在一起以限定凹陷部(400)的第一侧翼(100，100′)、第二侧翼(200，200′)和下延部(300，300′)，以及，所述凹陷部(400)用于容纳乘客的头部；
    其特征在于，
    所述第一侧翼(100，100′)和所述第二侧翼(200，200′)两者的至少一部分由第一片织物(W1)形成。
  2. 根据权利要求1所述的安全气囊，其中，所述第一侧翼(100，100′)、所述第二侧翼(200，200′)和所述下延部(300，300′)仅由所述第一片织物(W1)和第二片织物(W2)形成。
  3. 根据权利要求2所述的安全气囊，其中，所述第一侧翼(100)包括用于形成所述凹陷部(400)的第一内侧面(100A)，所述第二侧翼(200)包括用于形成所述凹陷部(400)的第二内侧面(200A)，并且，所述第一内侧面(100A)和所述第二内侧面(200A)被彼此相邻地设置。
  4. 根据权利要求3所述的安全气囊，其中，所述下延部(300)用于保护乘客的腹部，并且包括面向乘客的第一正面，所述第一正面分别与所述第一内侧面(100A)、所述第二内侧面(200A)相邻地设置。
  5. 根据权利要求4所述的安全气囊，其中，所述第一侧翼(100)和所述第二侧翼(200)被构造为当处于展开状态时分别形成第一凸角和第二凸角。
  6. 根据权利要求2所述的安全气囊，其中，所述第二片织物(W2)被构造为长条形，并且在展开状态时至少位于所述安全气囊的前侧。
  7. 根据权利要求6所述的安全气囊，其中，所述第二片织物(W2)在展开状态时位于所述安全气囊的前侧、下侧和后侧。
  8. 根据权利要求2所述的安全气囊，其中，所述下延部(300)的所述第一正面由所述第一片织物(W1)形成。
  9. 根据权利要求1所述的安全气囊，其中，还包括设置在所述安全气囊内的拉带，所述拉带的一端被构造为连接到所述安全气囊的前侧，并且所述拉带的另一端被构造为连接到所述第一侧翼(100)和所述第二侧翼(200)之间。
  10. 一种车辆，其包括根据权利要求1至9中任一项所述的安全气囊，并且，所述安全气囊被构造为安装在所述车辆的仪表盘中。
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DE102015004973A1 (de) * 2015-04-20 2016-10-20 Trw Automotive Gmbh Front-Kopf/Rumpf-Gassack
CN112706719A (zh) * 2019-10-25 2021-04-27 奥托立夫开发公司 安全气囊和车辆

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