WO2012065553A1 - 汽车安全气囊 - Google Patents

汽车安全气囊 Download PDF

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Publication number
WO2012065553A1
WO2012065553A1 PCT/CN2011/082289 CN2011082289W WO2012065553A1 WO 2012065553 A1 WO2012065553 A1 WO 2012065553A1 CN 2011082289 W CN2011082289 W CN 2011082289W WO 2012065553 A1 WO2012065553 A1 WO 2012065553A1
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WO
WIPO (PCT)
Prior art keywords
air bag
safety air
face
woven material
vehicle safety
Prior art date
Application number
PCT/CN2011/082289
Other languages
English (en)
French (fr)
Inventor
萨格⋅克罗蒂亚
金明月
Original Assignee
奥托立夫开发公司
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Application filed by 奥托立夫开发公司 filed Critical 奥托立夫开发公司
Publication of WO2012065553A1 publication Critical patent/WO2012065553A1/zh

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Classifications

    • 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
    • B60R21/235—Inflatable members characterised by their material
    • 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
    • B60R21/235—Inflatable members characterised by their material
    • B60R2021/23533—Inflatable members characterised by their material characterised by the manufacturing process
    • 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

Definitions

  • the present invention relates to a car safety device, and more particularly to a car safety device for providing frontal protection for an occupant. Background technique
  • Car safety is widely used in modern cars to provide personal protection.
  • the working process is: When a car collides or the like, the sensor on the vehicle body senses the motion change information and sends an excitation message to the connected gas generating device, which inflates the air cylinder to provide occupant soft protection.
  • the air enthalpy can be divided into a frontal ventilator and a side ventilated, respectively, in accordance with the direction in which the air is restrained and provides protection, such as a frontal air that is installed in the steering wheel and installed in the dashboard of the car to provide facial and chest front restraint protection. ⁇ , and side air dams mounted on the seat or door to provide chest, hip and head side restraint protection.
  • the current positive safety airbags have a large volume and thickness relative to the side air vents, which cushion the large displacement of the front side and provide soft protection.
  • An airbag with a frontal safety is generally made up of two pieces of stacked fabric along its circumference.
  • the situation that cannot be ignored is: When the human body collides with the soft air, the gas at the center of the air will move toward the circumference due to the impact of the head of the human body, thus generating a large gas pressure in the circumferential direction.
  • the basic structure of the frontal air in the prior art is that the upper and lower pieces are sewn, specifically, the front surface of the head contact and the back side of the human body are sewn, and The suture is located in the circumferential direction of the air. Therefore, in the above prior art, when the human body hits the air, the gas will collect from the center toward the circumferential direction of the suture and form a large local gas pressure, and there is a flaw in the sewing thread.
  • the main object of the present invention is to provide a new type of automobile safety device, in particular a frontal safety device, which can withstand the impact force from the occupant and remain intact, in particular to avoid damage in the circumferential direction of the air stagnation;
  • the new type of automobile safety gas can use lighter textile materials to achieve weight reduction and cost reduction;
  • the new automobile safety air filter of the present invention should also have the characteristics of simple structure, convenient manufacture and installation, Meet a wide range of uses.
  • the present invention provides an automobile safety device which is made of a single piece of fabric material, the two ends of which are relatively centered, and the ends are stitched in the axial direction to form a cylindrical body.
  • the surrounding wall of the cylindrical body is a side wall of the air enthalpy, and the first end surface of the cylindrical body is closed to become a front surface of the air enthalpy, and the second end surface of the cylindrical body is the same
  • a gas generator that inflates the gas cylinder is connected.
  • the safety barrier provides positive protection to the human body. 2
  • the first end face is stitched by a sewing thread to form a closure.
  • the sewing thread is located inside the safety chamber.
  • the first end face has a first inwardly folded portion that is folded inwardly with respect to the air, and the first inwardly folded portion is stitched by the sewing thread in the first end face.
  • the inwardly folded portion is a pair of oppositely disposed regions on the first end face.
  • the two ends of the woven material overlap each other after being wound around the opposite center, and then stitched by a sewing thread.
  • the fabric is made of nylon 66, a 235 Dtex fabric.
  • the second end face has a second inwardly folded portion, such that the second end face is mated with the gas generator that inflates the gas.
  • the fabric material is rectangular such that the formed tubular body is cylindrical.
  • the tubular body formed of the fabric material has an asymmetrical shape.
  • the woven material is fan shaped such that the formed tubular body is tapered.
  • the fabric material is trapezoidal in shape with the two waist portions of the trapezoid being wrapped around the center of the fabric material.
  • the fabric material is curved.
  • the car safety device of the above structure in particular, the front air cell which provides front protection of the human body, which is stitched in the axial direction by the single piece of fabric material to form the cylindrical body, the sewing thread does not follow
  • the cylindrical body is routed in the circumferential direction. Therefore, when the gas is hit by the front of the human body and compresses the gas, the pressure which expands outward along the circumference of the gas cylinder does not damage the gas structure, thereby maintaining the shape of the gas.
  • Structure to provide reliable protection due to its reliable shape, the automotive safety air conditioner of the present invention can also use light fabric materials, for example, nylon 66, 235Dtex fabric, which not only saves cost, but also facilitates light-weight design.
  • Figure 1 is a perspective view showing the three-dimensional structure of the automobile safety air passage of the present invention.
  • Figure 2 Schematic cross-sectional view of the first end face of the automotive safety air cell of the present invention
  • Figure 3 A side view of the car safety air filter of the present invention
  • Figure 4 Schematic cross-sectional view of the second end face of the automotive safety air cell of the present invention. detailed description
  • the present invention provides an automobile safety air vent, which is made of a single piece of fabric material 1 , the two ends of the woven material 1 are relatively centered, and The two end portions are stitched in the axial direction to form a cylindrical body, and the surrounding wall of the cylindrical body is the side of the air enthalpy, and the first end surface 11 of the cylindrical body is closed and becomes a On the front side of the gas cylinder, the second end faces 12 and 3 of the cylindrical body are connected to a gas generator (not shown) which is inflated.
  • the "cylinder” described above does not only refer to a cylindrical body, but generally refers to a body in which all circumferences are laterally closed and the interior is longitudinally hollow.
  • the cylindrical body is cylindrical and is surrounded by a rectangular planar fabric material.
  • the "cylinder” referred to in the present invention is not limited to a cylindrical body.
  • the fabric material is fan-shaped such that the tubular body surrounded by the fabric material has a conical shape.
  • the fabric material has a trapezoidal shape, and the two waist portions of the trapezoid are sewn together as both end portions, and the formed tubular body exhibits an asymmetrical shape.
  • the tubular body is formed into an asymmetrical shape, a good effect is produced in the automobile smalloverlap collision test (i.e., the frontal 40% overlap deformable wall crash test or the offset crash test).
  • a non-planar woven material for example, a non-planar woven material which is bulged in the middle, and the cylindrical body surrounded by the woven material has a circumferentially convex drum shape. Both ends of the woven material may even be designed in a curved shape, and when both ends are surrounded, the curved both ends may overlap each other and be sewn to form a cylindrical body.
  • the automobile safety device of the above structure is made of a single piece of fabric material, and has a simple structure and easy control and guarantee of the process quality compared with the existing two-piece sewing structure.
  • both end portions of the woven material are overlapped after being wound around the center, and then sewn by a sewing thread to realize the above-described gas enthalpy of the tubular body structure made of the single piece of woven material 1.
  • the automobile safety device in the present invention is particularly applied to a front air vent which provides front protection of the human body, and has no sewing thread structure in the circumferential direction of the air vent, and only the sewing thread in the overlapping portion in the axial direction, such as As shown in Fig. 1, the sewing thread is routed along the longitudinal direction of the tubular body and vertically passes through the overlapping portion as shown in Fig. 2, which is more resistant to the sewing thread in the circumferential direction than in the prior art. Radial expansion force. Therefore, when the gas is hit by the front of the human body and compresses the gas, the pressure which expands outward in the circumferential direction of the gas does not damage the gas structure, thereby maintaining the shape of the gas to provide protection.
  • the structure of the structure of the present invention can also be made by using a lightweight fabric material, such as nylon 66, 235Dtex fabric. Not only cost savings, but also the need for lightweight design.
  • the closure of the first end face 11 can be accomplished by a variety of closure techniques, preferably stitched through the stitching line 110 to form a closure.
  • the sewing thread 110 is located inside the safety air bladder for the purpose of facilitating the actual use.
  • the first end face 11 has a first inner fold portion 111. As shown in FIG. 1 and FIG. 2, a portion of the first end face 11 is folded inward with respect to the center of the cylindrical body in the direction of the arrow in the figure. An inwardly folded portion 111. The first end face 11 having the first inwardly folded portion 111 is still sewn by the sewing thread 110 so that the cross section at the first end face is smaller than the cross section between the end faces of the gas.
  • the first inwardly folded portion 111 is a pair of oppositely disposed regions on the first end face 11. The inwardly folded portion 111 is disposed opposite to the first end face 11 as shown in FIG.
  • FIG. 4 is a cross-sectional view showing a second end face of the car safety air passage of the present invention, as shown in FIG. 4, the second end face 12 has a second inwardly folded portion 121, so that the first The two end faces 12 are matingly coupled to a gas generator (not shown) that inflates the gas.
  • a gas generator not shown

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

Description

汽车安全气嚢 技术领域
本发明涉及一种汽车安全气嚢， 特别是涉及用于提供乘员正面保护的汽车安全气嚢。 背景技术
汽车安全气嚢被广泛应用于现代汽车之中， 以提供人身保护。 其工作的过程是： 在汽车发生 碰撞或类似危险时， 车身上的传感器感应运动变化信息并发送激发信息给所连接的气体发生装 置，并由其向气嚢进行充气提供乘员以软保护。通常可以按照气嚢所约束并提供保护的方向不同， 将气嚢分为正面气嚢和侧面气嚢，例如安装在方向盘中和安装在汽车仪表盘中的提供面部、胸部 正面约束保护的正面气嚢，和安装在座椅或车门上的用以提供胸部、髋部和头部侧面约束保护的 侧面气嚢。
目前的正面安全气嚢相对侧面气嚢而言都具有较大的体积和厚度， 用以緩冲正面的较大位移 并提供软保护。正面安全气嚢的气袋一般由两片叠放的布料沿其周向缝合而成。但不可忽视的情 况是： 当人体正面冲撞到软的气嚢时，位于气嚢中心处的气体将会由于受到人体的头部撞击而向 周向移动， 因此在周向产生较大的气体压力。 同时现有技术中的正面气嚢的基本结构是釆用上下 两片缝制而成， 具体的就是说， 釆用作为头部接触的正面和作为背对人体的反面进行缝制而成， 而缝合线就位于气嚢的周向。 因此在上述现有技术中， 当人体撞击气嚢时气体将会自中心向具有 缝合线的周向汇集并形成较大的局部气体压力， 并有造成缝纫线破裂之虞。
同时， 本领域中也存在着降低成本、 减轻气嚢整体质量的技术改进趋势， 而釆用较轻质量的 纺织材料将会使得上述缝纫线破裂的危险加大，因此也需要提供一种新的气嚢结构并可以釆用较 为轻型的织物材料而不会受到气体压力的破坏。 发明内容
本发明的主要目的在于提供一种新型的汽车安全气嚢，特别是正面安全气嚢，其能够承受来 自乘员的撞击冲力而保持完整，特别是避免在该气嚢的周向出现破损； 同时该新型的汽车安全气 嚢能够釆用较轻型的纺织材料， 以达到减轻重量， 降低成本的目的； 另外， 本发明中的新型汽车 安全气嚢还应该具有结构简单、 制造和安装方便的特征， 以满足大范围的利用。
为此本发明提供一种汽车安全气嚢，其由单片织物材料制成，所述织物材料的两端部相对中 心环绕， 并沿轴向将所述两端部缝合以形成筒型体， 所述筒型体的环绕筒壁为所述气嚢的侧壁， 所述筒型体的第一末端面经封闭后成为所述气嚢的正面，所述筒型体的第二末端面同为所述气嚢 充气的气体发生器相连接。 优选地， 安全气嚢为人体提供正面保护。 2
优选地， 第一末端面经缝纫线缝合形成封闭。
更优选地， 缝纫线位于安全气嚢内部。
更优选地， 第一末端面处具有相对气嚢向内折的第一内折部分， 第一内折部分在第一末端面 周向上经缝纫线缝合。
更优选地， 内折部分是第一末端面上一对相对布置的区域。
优选地， 织物材料的两端部在相对中心环绕后彼此重叠， 然后通过缝纫线进行缝合。
优选地， 织物釆用尼龙 66, 纤度 235Dtex的织物。
优选地， 第二末端面处具有均勾的第二内折部分， 以使得第二末端面与为所述气嚢充气的气 体发生器相配合连接。
优选地， 织物材料为矩形， 从而使所形成的筒型体呈圆筒状。 优选地， 织物材料所形成的筒 型体为非对称形状。
优选地， 所述织物材料为扇形， 从而使所形成的筒型体呈锥形体。
优选地， 织物材料为梯形形状， 梯形的两腰部分作为织物材料的两端部相对中心环绕。 优选地， 织物材料为曲线形。
釆用上述结构的汽车安全气嚢，特别是提供人体正面保护的正面气嚢，其由于釆用单片织物 材料沿轴向将所述两端部缝合以形成筒型体， 缝纫线并不沿筒型体的周向方向上走线， 因此， 当 气嚢受到人体正面撞击并压缩气体时， 沿气嚢周向向外膨胀的压力不会对气嚢结构进行破坏，从 而保持气嚢的外形结构以提供可靠的保护。 同时由于其外形的可靠，本发明的汽车安全气嚢也可 以釆用轻型的织物材料， 例如， 釆用尼龙 66, 纤度 235Dtex的织物， 不仅节约成本， 更有利于 轻型化设计的需要。 附图说明
图 1 : 本发明的汽车安全气嚢的立体结构示意图；
图 2: 本发明的汽车安全气嚢的第一末端面的横截面示意图；
图 3: 本发明的汽车安全气嚢的侧面示意图；
图 4: 本发明的汽车安全气嚢的第二末端面的横截面示意图。 具体实施方式
请参阅图 1所示的安全气嚢的立体结构示意图，本发明提供的一种汽车安全气嚢， 其由单片 织物材料 1制成，所述织物材料 1的两端部相对中心环绕，并沿轴向将所述两端部缝合以形成筒 型体， 所述筒型体的环绕筒壁为所述气嚢的侧辟， 所述筒型体的第一末端面 11经封闭后成为所 述气嚢的正面， 所述筒型体的第二末端面 12与 3为所述气嚢充气的气体发生器（未示出）相连接。 需要注意的是， 上文所述的 "筒型体" 并不仅仅指圆筒状的主体， 而是泛指所有周侧向闭合 而内部纵向为中空的形体。 在图 1中， 筒型体呈圆筒状， 其由矩形平面的织物材料环绕而成。 然 而， 本发明所指的 "筒形体" 并不仅限于圆筒状主体。 例如， 织物材料呈扇形， 这样， 由该织物 材料围绕而成的筒型体呈锥形体。可选地，可以考虑将织物材料所形成的筒型体呈现为非对称形 状。 例如， 织物材料为梯形形状， 梯形的两腰部分作为两端部缝合在一起， 所形成的筒型体就呈 现不对称形状。 特别地， 如果筒型体形成为非对称形状， 则汽车 smalloverlap碰撞测试（即正面 40%重叠可变形壁碰撞试验或偏置碰撞试验）中会产生较好的效果。 也可以考虑釆用非平面状的 织物材料，例如釆用中间鼓起的非平面织物材料， 由该织物材料围绕而成的筒型体呈周向外凸的 鼓状。 织物材料的两端部甚至可以设计为曲线形， 在两端部环绕时， 曲线形的两端部可以相互重 叠并缝合而形成筒型体。
釆用上述结构的汽车安全气嚢， 由于其是由单片的织物材料制成，其相对现有的双片缝合结 构具有结构简单、 工艺质量易控制和保障。 优选地， 织物材料的两端部在相对中心环绕后进行重 叠， 然后通过缝纫线进行缝合， 以实现上述的由单片织物材料 1制成筒型体结构的气嚢。
本发明中的汽车安全气嚢，特别是应用在提供人体正面保护的正面气嚢，其由于气嚢的周向 方向上并没有缝纫线结构， 只有沿轴向方向的重叠部分的缝纫线， 如图 1所示， 缝纫线沿筒型体 纵向方向走线并如图 2所示相对于重叠部分垂直穿过，相比于现有技术中沿周向方向走线的缝纫 线， 可以抵抗较大的径向膨胀力。 因此， 当气嚢受到人体正面撞击并压缩气体时， 沿气嚢周向向 外膨胀的压力并不会对气嚢结构进行破坏， 从而保持气嚢的外形结构以提供保护。
同时由于其外形结构的可靠，本发明结构的气嚢也实现了可以釆用轻型的织物材料制作的目 的， 例如釆用尼龙 66, 纤度 235Dtex的织物。 不仅节约成本， 更有利于轻型化设计的需要。
在如图 3所示的实施例中的， 所述第一末端面 11的封闭可以釆用多种封闭技术， 优选的其 经缝纫线 110缝合形成封闭。 同时， 为方便实际使用的效果所述缝纫线 110位于所述安全气嚢内 部。
所述第一末端面 11处具有第一内折部分 111 , 如图 1和图 2中所示， 第一末端面 11的一部 分相对筒形体的中心， 按图中的箭头方向向内折形成第一内折部分 111。 具有第一内折部分 111 的第一末端面 11仍旧由缝纫线 110缝合形成封闭， 以使得第一末端面处的横截面小于所述气嚢 两末端面之间处的横截面。 优选的， 所述第一内折部分 111是所述第一末端面 11上一对相对布 置的区域。 如图 2所示该内折部分 111相对第一末端面 11相对布置。
图 4是本发明的汽车安全气嚢的第二末端面的横截面示意图，如图 4所示，所述第二末端面 12处具有均勾的第二内折部分 121 , 以使得所述第二末端面 12与为所述气嚢充气的气体发生器 (未示出）相配合连接。 在图 3的本发明所揭 的安全气嚢的侧面示意图中， 可以清楚的看到， 整个气 靠近第二末端面 12端逐 收窄' 并在气嚢上形成褶皱 而所述第二末 端面 12则形成同气体发生器（未示出）相配合连接的尺寸。

Claims

权利 ^求书
1、 一种汽车安全气嚢， 其特征在于： 其由单片织物材料制成， 所述织物材料的两端部相对 中心环绕，并沿轴向将所述两端部缝合以形成筒型体，所述筒型体的环绕筒壁为所述气嚢的侧壁， 所述筒型体的第一末端面经封闭后成为所述气嚢的正面，所述筒型体的第二末端面与为所述气嚢 充气的气体发生器相连接。
2、 如权利要求 1所述的汽车安全气嚢， 其特征在于， 所述安全气嚢为人体提供正面保护。
3、 如权利要求 1所述的汽车安全气嚢， 其特征在于， 所述第一末端面经缝纫线缝合形成封 闭。
4、 如权利要求 3所述的汽车安全气嚢， 其特征在于， 所述缝纫线位于所述安全气嚢内部。
5、 如权利要求 3所述的汽车安全气嚢， 其特征在于， 所述第一末端面处具有相对所述筒型 体中心向内折的第一内折部分。
6、 如权利要求 5所述的汽车安全气嚢， 其特征在于， 所述内折部分是所述第一末端面处一 对相对布置的区域。
7、 如权利要求 1所述的汽车安全气嚢， 其特征在于， 所述织物材料的两端部在相对中心环 绕后彼此重叠， 然后通过缝纫线进行缝合。
8、 如权利要求 1所述的汽车安全气嚢， 其特征在于， 所述织物釆用尼龙 66, 纤度 235Dtex 的织物。
9、 如权利要求 1所述的汽车安全气嚢， 其特征在于， 所述第二末端面处具有均匀的第二内 折部分， 以使得所述第二末端面与为所述气嚢充气的气体发生器相配合连接。
10、 如权利要求 1-9中任一项所述的汽车安全气嚢， 其特征在于， 所述织物材料为矩形， 从而使所形成的筒型体呈圆筒状。
11、 如权利要求 1-9中任一项所述的汽车安全气嚢， 其特征在于， 所述织物材料为扇形， 从 而使所形成的筒型体为锥形体。
12、 如权利要求 1所述的汽车安全气嚢， 其特征在于， 所述筒型体为非对称形状。
13、根据权利要求 12所述的汽车安全气嚢， 其特征在于， 所述织物材料为梯形形状， 梯形 的两腰部分作为织物材料的两端部相对中心环绕。
14、根据权利要求 1所述的汽车安全气嚢， 其特征在于， 所述织物材料的两端部为曲线形。
PCT/CN2011/082289 2010-11-18 2011-11-16 汽车安全气囊 WO2012065553A1 (zh)

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