WO2021258791A1 - Knee airbag - Google Patents

Knee airbag Download PDF

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Publication number
WO2021258791A1
WO2021258791A1 PCT/CN2021/081752 CN2021081752W WO2021258791A1 WO 2021258791 A1 WO2021258791 A1 WO 2021258791A1 CN 2021081752 W CN2021081752 W CN 2021081752W WO 2021258791 A1 WO2021258791 A1 WO 2021258791A1
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WO
WIPO (PCT)
Prior art keywords
drawstring
main
main cloth
sewing
knee airbag
Prior art date
Application number
PCT/CN2021/081752
Other languages
French (fr)
Chinese (zh)
Inventor
陈吴健
梁小雨
邵绍兵
Original Assignee
奥托立夫开发公司
陈吴健
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Application filed by 奥托立夫开发公司, 陈吴健 filed Critical 奥托立夫开发公司
Publication of WO2021258791A1 publication Critical patent/WO2021258791A1/en

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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
    • B60R21/206—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards in the lower part of dashboards, e.g. for protecting the knees
    • 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

Definitions

  • the present invention relates to the technical field of airbags, in particular to a one-piece knee airbag.
  • the existing knee airbag includes three straps 1'and a piece of main fabric 2'.
  • the purpose of the present invention is to overcome the shortcomings of the prior art and provide a knee airbag that simplifies the process and reduces the cost.
  • the technical solution of the present invention provides a knee airbag, the knee airbag is of a one-piece type, the knee airbag includes a first main cloth, a second main cloth and a strap part, and the strap part is provided On the second main fabric, after the drawstring portion itself is folded and sewn in half, the drawstring portion is sewn with the first main fabric, and finally the first main fabric and the second main fabric are folded and sewn in half.
  • each pull strap part is provided with a plurality of through holes arranged at intervals.
  • the length from long to short includes a first pull strap, a second pull strap, and a third pull strap.
  • the first pull strap and the second pull strap And the third drawstring portion are sequentially distributed on the second main cloth toward a direction away from the first main cloth.
  • first drawstring part, the second drawstring part and the third drawstring part are sequentially folded and sewn in half.
  • the through holes include two rows, and the two rows of through holes overlap after the strap portion is folded in half.
  • the left and right sides of the drawstring part are provided with first sewing lines
  • the center of the drawstring part is provided with a first pair of fold lines along the vertical direction
  • the upper and lower sides of the drawstring part on the second main cloth Both ends are formed with a notch
  • the bottom of the notch is the upper or lower side of the strap portion
  • the left and right sides of the notch are butted with the first sewing thread, one of the pull When the two first sewing threads of the belt part are stitched together, the left and right sides of the notch part are stitched together.
  • a second sewing thread is further provided on the drawstring part along the vertical direction, and the drawstring part and the first main fabric are sewn by the second sewing thread.
  • first main cloth and the second main cloth are further provided with a third sewing thread, and the first main cloth and the second main cloth are sewn by the third sewing thread.
  • a second double fold line is provided between the first main cloth and the second main cloth, and after the first main cloth and the second main cloth are folded along the second double fold line, the Sewing with two of the third sewing threads.
  • the knee airbag in the present invention has a one-piece structure, which can reduce the number of slices and reduce inventory management. Putting the sewing on one side of the drawstring part and the second main fabric and the sewing of the drawstring part itself on the same automatic sewing machine can reduce the number of operators and machines, and at the same time, it can also reduce half of the drawstring sewing positioning line.
  • Figure 1 is a schematic diagram of an existing knee airbag
  • Figure 2 is a deployment view of an airbag installed on the knee in an embodiment of the present invention
  • Figure 3 is a schematic diagram of the first folding and sewing of an airbag installed on the knee in an embodiment of the present invention
  • Fig. 4 is a schematic diagram of the second folding and sewing for installing the airbag on the knee in an embodiment of the present invention
  • Fig. 5 is a schematic diagram of the third folding and sewing for installing the airbag on the knee in an embodiment of the present invention
  • Fig. 6 is a schematic diagram of the strap part of the knee-mounted airbag and the first main cloth after sewing in an embodiment of the present invention
  • FIG. 7 is a schematic diagram of the first main cloth and the second main cloth of the knee-mounted airbag after sewing in an embodiment of the present invention
  • Fig. 8 is a cross-sectional view at A-A of Fig. 7.
  • Strap portion 3 first strap portion 31, second strap portion 32, third strap portion 33, through hole 34;
  • the knee airbag is a one-piece type, and the knee airbag includes a first main cloth 1, a second main cloth 2, and a strap 3, and a strap 3 It is set on the second main fabric 2, after the drawstring part 3 itself is folded and sewn, the drawstring part 3 is sewn with the first main fabric 1, and finally the first main fabric 1 and the second main fabric 2 are folded and sewn.
  • the drawstring part 3 and the second main fabric 2 and the first main fabric 1 are a single piece structure, the first main fabric 1 is located on the left side, the second main fabric 2 is located on the right side, and the drawstring part 3 is provided on the first The middle part of the second main cloth 2.
  • drawstring part 3 After the drawstring part 3 is folded and overlapped in half, it is sewn to form a drawstring structure.
  • One side of the drawstring structure is sewn together with the first main fabric 1, and finally the first main fabric 1 and the second main fabric 2 are sewn together.
  • the outer edge is sewn to form a completely closed airbag structure.
  • the shape of the first main cloth 1 is the same as the shape of the second main cloth 2 after the strap 3 itself is sewn, and is arranged symmetrically.
  • the first main fabric 1 and the second main fabric 2 are completely overlapped after being folded in half, and then the outer edges of the first main fabric 1 and the second main fabric 2 are sewn together.
  • the knee airbag in this embodiment has a one-piece structure, which can reduce the number of slices and reduce inventory management. Putting the sewing on one side of the drawstring part 3 and the second main fabric 2 and the sewing on the drawstring part 3 itself on the same automatic sewing machine can reduce the number of operators and machines, and at the same time, it can reduce the drawstring sewing by half. Positioning line.
  • each drawstring part 3 is provided with a plurality of through holes 34 arranged at intervals, and the through holes 34 serve as internal air vents of the airbag.
  • the through holes 34 include two rows. As shown in FIG. 3, the two rows of through holes 34 overlap after the strap portion 3 is folded in half.
  • the through holes 34 may also be in four rows, and the two rows of through holes 34 overlap after the strap portion 3 is folded in half.
  • drawstring parts 3 there are three drawstring parts 3, and the lengths from longest to shortest include a first drawstring part 31, a second drawstring part 32, and a third drawstring part 33.
  • the first drawstring The portion 31, the second strap portion 32 and the third strap portion 33 are sequentially distributed on the second main fabric 2 in a direction away from the first main fabric 1.
  • the first drawstring portion 31, the second drawstring portion 32, and the third drawstring portion 33 divide the second main cloth 2 into four parts.
  • the width of the second main fabric 2 and the strap portion 3 after unfolding in Figure 2 is greater than the width of the first main fabric 1.
  • the width of the second main fabric 2 is greater than that of the first main fabric.
  • One main cloth 1 is equal.
  • first drawstring portion 31, the second drawstring portion 32, and the third drawstring portion 33 are sequentially folded and sewn in half.
  • the first drawstring portion 31 is first folded along the first pair of folding lines 5 thereon, and then the first drawstring portion 31 is sewn along the first sewing line 4 thereon.
  • the second drawstring part 32 is folded in half along the first pair of folding lines 5 thereon, and then the second drawstring part 32 is sewn along the first sewing line 4 thereon.
  • the third drawstring part 33 is then folded in half along the first pair of folding lines 5 thereon, and then the third drawstring part 33 is sewn along the first sewing line 4 thereon.
  • the divided second main cloth 2 is completely assembled, and the shape of the second main cloth 2 is exactly the same as that of the first main cloth 1 and is arranged symmetrically.
  • the third drawstring portion 33, the second drawstring portion 32, and the first drawstring portion 31 can be folded and sewn in sequence; it is also possible to sew the second drawstring portion 32 first, and then sew the left and right side first portions.
  • the lengths of the first drawstring portion 31, the second drawstring portion 32, and the third drawstring portion 33 can be set to corresponding lengths according to the shape of the second main cloth 2.
  • the left and right sides of the drawstring portion 3 are provided with first sewing threads 4, the center of the drawstring portion 3 is provided with a first pair of folding lines 5 along the vertical direction, and the second main fabric 2 is provided with a drawstring
  • the upper and lower ends of the part 3 are formed with a notch 6, the bottom of the notch 6 is the upper or lower side of the drawstring part 3, the left and right sides of the notch 6 are butted with the first sewing thread 4, a drawstring
  • first pair of fold lines 5 are located at the center of the strap portion 3 along the vertical direction, and the three strap portions 3 are all provided with the first pair of fold lines 5.
  • a first sewing thread 4 is provided at the boundary between the drawstring part 3 and the second main fabric 2.
  • Each drawstring part 3 has two parallel first sewing threads 4, and the three drawstring parts 3 are all provided with first sewing threads. Line 4.
  • the notch portion 6 is located on the upper and lower sides of the drawstring portion 3, and each drawstring portion 3 is provided with two notches 6. As shown in Fig. 5, when the drawstring part 3 itself is sewn, the notch 6 disappears, the outer edges of the second main cloth 2 are butted, and the left and right sides of the notch 6 are butted together with the first sewing thread 4.
  • a second sewing thread 7 is further provided on the drawstring part 3 along the vertical direction, and the drawstring part 3 and the first main fabric 1 are sewn by the second sewing thread 7.
  • the drawstring part 3 when the drawstring part 3 is completely sewn by itself, the drawstring part 3 and the first main cloth 1 are sewn together, so that the first main cloth 1 and the second main cloth 2 overlap.
  • the second sewing thread 7 is close to the position where the first pair of fold lines 5 are located.
  • the strap 3 is used to connect the first main cloth 1 and the second main cloth 2 from the inside of the airbag.
  • first main cloth 1 and the second main cloth 2 are also provided with a third sewing thread 8, through which the first main cloth 1 and the second main cloth 1 are connected to each other. Cloth 2 sewing.
  • the third sewing thread 8 is located on the outer edges of the first main fabric 1 and the second main fabric 2.
  • the strap part 3 is sewn with the first main fabric 1, the first main fabric 1 and the second main fabric 1 are separated by the third sewing thread 8
  • the main cloth 2 is sewn to complete the sewing of the entire airbag.
  • a second double fold line 9 is also provided between the first main cloth 1 and the second main cloth 2, and the first main cloth 1 and the second main cloth 2 are folded in half along the second double fold line 9 , Sew the two third sewing threads 8.
  • the first main cloth 1 and the second main cloth 2 are folded in half by a second fold line 9 so that the first main cloth 1 and the second main cloth 2 are completely overlapped, and then they can be sewn together by the third sewing thread 8.
  • the second double fold line 9 may not be provided, and the fold of the first main cloth 1 and the second main cloth 2 is an arc-shaped surface.

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

Abstract

A knee airbag. The knee airbag is of a one-piece structure and comprises a first main fabric (1), a second main fabric (2), and pull strap portions (3). The pull strap portions (3) are provided on the second main fabric (2). The pull strap portions (3) per se are folded and sewed, then the pull strap portions (3) are sewed to the first fabric (1), and finally the first main fabric (1) and the second main fabric (2) are folded and sewed. The knee airbag is of a one-piece structure, and thus can reduce the number of pieces and reduce inventory management. The sewing of the pull strap portions (3) to one side of the second main fabric (2) and the sewing of the pull strap portions (3) per se are operated on a same automatic sewing machine, so that operators and machines can be reduced, and a half of sewing positioning threads for the pull strap portions (3) can further be reduced.

Description

膝部安全气囊Knee airbag 技术领域Technical field
本发明涉及安全气囊的技术领域，尤其涉及一种一片式的膝部安全气囊。The present invention relates to the technical field of airbags, in particular to a one-piece knee airbag.
背景技术Background technique
如图1所示，现有的膝部安全气囊包括三条拉带1′和一片主布2′，拉带1′和主布2′独立分开，需要一片一片的拿起拉带1′，先自身缝纫在一起，然后再跟主布2′缝纫在一起，最后主布2′自身缝纫在一起形成完整的膝部安全气囊。As shown in Figure 1, the existing knee airbag includes three straps 1'and a piece of main fabric 2'. The straps 1'and the main fabric 2'are separated independently. You need to pick up the straps 1'one by one. Sewing itself together, and then sewing together with the main cloth 2', and finally the main cloth 2'sewing together with itself to form a complete knee airbag.
现有的膝部安全气囊存在以下缺点：The existing knee airbags have the following disadvantages:
1)切片数量多，增加库位管理费用；1) The large number of slices increases storage location management costs;
2)拉带1′跟主布2′缝纫，需要在主布2′上面增加定位线，导致划线工位效率低；2) The drawstring 1'is sewn with the main fabric 2', and a positioning line needs to be added to the main fabric 2', resulting in low efficiency of the marking station;
3)拉带1′跟主布2′两侧进行缝纫的时间较长，需要额外的操作工和缝纫机，成本增加。3) It takes a long time to sew on both sides of the drawstring 1'and the main cloth 2', which requires additional operators and sewing machines, and increases the cost.
因此，有必要设计一种简化工艺、降低成本的膝部安全气囊。Therefore, it is necessary to design a knee airbag that simplifies the process and reduces the cost.
发明内容Summary of the invention
本发明的目的在于克服现有技术的不足，提供一种简化工艺、降低成本的膝部安全气囊。The purpose of the present invention is to overcome the shortcomings of the prior art and provide a knee airbag that simplifies the process and reduces the cost.
本发明的技术方案提供一种膝部安全气囊，所述膝部安全气囊为一片式，所述膝部安全气囊包括第一主布、第二主布和拉带部，所述拉带部设置在所述第二主布上，所述拉带部自身对折缝纫后，所述拉带部与所述第一主布缝纫，最后所述第一主布与所述第二主布对折缝纫。The technical solution of the present invention provides a knee airbag, the knee airbag is of a one-piece type, the knee airbag includes a first main cloth, a second main cloth and a strap part, and the strap part is provided On the second main fabric, after the drawstring portion itself is folded and sewn in half, the drawstring portion is sewn with the first main fabric, and finally the first main fabric and the second main fabric are folded and sewn in half.
进一步地，所述拉带部有至少两个，每个所述拉带部上开设有多个间隔布置的通孔。Further, there are at least two pull strap parts, and each pull strap part is provided with a plurality of through holes arranged at intervals.
进一步地，所述拉带部有三个，长度从长到短依次包括第一拉带部、 第二拉带部和第三拉带部，所述第一拉带部、所述第二拉带部和所述第三拉带部在所述第二主布上朝向远离所述第一主布的方向依次分布。Further, there are three pull strap parts, and the length from long to short includes a first pull strap, a second pull strap, and a third pull strap. The first pull strap and the second pull strap And the third drawstring portion are sequentially distributed on the second main cloth toward a direction away from the first main cloth.
进一步地，所述第一拉带部、所述第二拉带部和所述第三拉带部依次对折缝纫。Further, the first drawstring part, the second drawstring part and the third drawstring part are sequentially folded and sewn in half.
进一步地，所述通孔包括两列，所述拉带部对折后两列所述通孔重叠。Further, the through holes include two rows, and the two rows of through holes overlap after the strap portion is folded in half.
进一步地，所述拉带部的左右侧设有第一缝纫线，所述拉带部的中心沿竖直方向设有第一对折线，所述第二主布上所述拉带部的上下端均形成有缺口部，所述缺口部的底边为所述拉带部的上侧边或下侧边，所述缺口部的左右侧边与所述第一缝纫线对接，一个所述拉带部的两条所述第一缝纫线重叠缝纫时，将所述缺口部的左右侧边一起缝纫。Further, the left and right sides of the drawstring part are provided with first sewing lines, the center of the drawstring part is provided with a first pair of fold lines along the vertical direction, and the upper and lower sides of the drawstring part on the second main cloth Both ends are formed with a notch, the bottom of the notch is the upper or lower side of the strap portion, the left and right sides of the notch are butted with the first sewing thread, one of the pull When the two first sewing threads of the belt part are stitched together, the left and right sides of the notch part are stitched together.
进一步地，所述拉带部上沿竖直方向还设有第二缝纫线，通过所述第二缝纫线将所述拉带部与所述第一主布缝纫。Further, a second sewing thread is further provided on the drawstring part along the vertical direction, and the drawstring part and the first main fabric are sewn by the second sewing thread.
进一步地，所述第一主布和所述第二主布的外边缘还设有第三缝纫线，通过所述第三缝纫线将所述第一主布与所述第二主布缝纫。Further, the outer edges of the first main cloth and the second main cloth are further provided with a third sewing thread, and the first main cloth and the second main cloth are sewn by the third sewing thread.
进一步地，所述第一主布与所述第二主布之间还设有第二对折线，所述第一主布与所述第二主布沿所述第二对折线对折后，将两条所述第三缝纫线缝纫。Further, a second double fold line is provided between the first main cloth and the second main cloth, and after the first main cloth and the second main cloth are folded along the second double fold line, the Sewing with two of the third sewing threads.
采用上述技术方案后，具有如下有益效果：After adopting the above technical scheme, it has the following beneficial effects:
本发明中的膝部安全气囊为一片式结构，可以减少切片数量，减低库存管理。将拉带部和第二主布其中一侧的缝纫跟拉带部自身的缝纫放在同一台自动缝纫机上面操作，可以减少操作工和机器,同时还可以减去一半的拉带缝纫定位线。The knee airbag in the present invention has a one-piece structure, which can reduce the number of slices and reduce inventory management. Putting the sewing on one side of the drawstring part and the second main fabric and the sewing of the drawstring part itself on the same automatic sewing machine can reduce the number of operators and machines, and at the same time, it can also reduce half of the drawstring sewing positioning line.
附图说明Description of the drawings
参见附图，本发明的公开内容将变得更易理解。应当理解：这些附图仅仅用于说明的目的，而并非意在对本发明的保护范围构成限制。图中：With reference to the drawings, the disclosure of the present invention will become easier to understand. It should be understood that these drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present invention. In the picture:
图1是现有的膝部安全气囊的示意图；Figure 1 is a schematic diagram of an existing knee airbag;
图2是本发明一实施例中膝部安装气囊的展开图；Figure 2 is a deployment view of an airbag installed on the knee in an embodiment of the present invention;
图3是本发明一实施例中膝部安装气囊的第一次折叠缝纫的示意图；Figure 3 is a schematic diagram of the first folding and sewing of an airbag installed on the knee in an embodiment of the present invention;
图4是本发明一实施例中膝部安装气囊的第二次折叠缝纫的示意图；Fig. 4 is a schematic diagram of the second folding and sewing for installing the airbag on the knee in an embodiment of the present invention;
图5是本发明一实施例中膝部安装气囊的第三次折叠缝纫的示意图；Fig. 5 is a schematic diagram of the third folding and sewing for installing the airbag on the knee in an embodiment of the present invention;
图6是本发明一实施例中膝部安装气囊的拉带部与第一主布缝纫后的示意图；Fig. 6 is a schematic diagram of the strap part of the knee-mounted airbag and the first main cloth after sewing in an embodiment of the present invention;
图7是本发明一实施例中膝部安装气囊的第一主布与第二主布缝纫后的示意图；7 is a schematic diagram of the first main cloth and the second main cloth of the knee-mounted airbag after sewing in an embodiment of the present invention;
图8是图7的A-A处的截面图。Fig. 8 is a cross-sectional view at A-A of Fig. 7.
附图标记对照表：Reference signs comparison table:
拉带1′、主布2′；Pull belt 1', main cloth 2';
第一主布1、第二主布2；The first main cloth 1, the second main cloth 2;
拉带部3：第一拉带部31、第二拉带部32、第三拉带部33、通孔34；Strap portion 3: first strap portion 31, second strap portion 32, third strap portion 33, through hole 34;
第一缝纫线4、第一对折线5、缺口部6、第二缝纫线7、第三缝纫线8、第二对折线9。The first sewing thread 4, the first double folding line 5, the notch portion 6, the second sewing thread 7, the third sewing thread 8, and the second double folding line 9.
具体实施方式detailed description
下面结合附图来进一步说明本发明的具体实施方式。The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
容易理解，根据本发明的技术方案，在不变更本发明实质精神下，本领域的一般技术人员可相互替换的多种结构方式以及实现方式。因此，以下具体实施方式以及附图仅是对本发明的技术方案的示例性说明，而不应当视为本发明的全部或视为对发明技术方案的限定或限制。It is easy to understand that, according to the technical solution of the present invention, there are various structural modes and implementation modes that can be replaced by one of ordinary skill in the art without changing the essential spirit of the present invention. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solutions of the present invention, and should not be regarded as all of the present invention or as a limitation or limitation to the technical solutions of the present invention.
在本说明书中提到或者可能提到的上、下、左、右、前、后、正面、背面、顶部、底部等方位用语是相对于各附图中所示的构造进行定义的，它们是相对的概念，因此有可能会根据其所处不同位置、不同使用状态而进行相应地变化。所以，也不应当将这些或者其他的方位用语解释为 限制性用语。具体为，本发明中的“前”、“后”是以整车的方位为基准的。The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc., mentioned or may be mentioned in this specification are defined relative to the structure shown in the drawings, and they are The concept of relative, therefore, may change accordingly according to different locations and different usage conditions. Therefore, these or other orientation terms should not be interpreted as restrictive terms. Specifically, "front" and "rear" in the present invention are based on the orientation of the entire vehicle.
本实施例中，如图2所示，膝部安全气囊，膝部安全气囊为一片式，膝部安全气囊包括第一主布1、第二主布2和拉带部3，拉带部3设置在第二主布2上，拉带部3自身对折缝纫后，拉带部3与第一主布1缝纫，最后第一主布1与第二主布2对折缝纫。In this embodiment, as shown in Figure 2, the knee airbag is a one-piece type, and the knee airbag includes a first main cloth 1, a second main cloth 2, and a strap 3, and a strap 3 It is set on the second main fabric 2, after the drawstring part 3 itself is folded and sewn, the drawstring part 3 is sewn with the first main fabric 1, and finally the first main fabric 1 and the second main fabric 2 are folded and sewn.
具体为，拉带部3与第二主布2、第一主布1为一整片结构，第一主布1位于左侧，第二主布2位于右侧，拉带部3设置在第二主布2的中部。Specifically, the drawstring part 3 and the second main fabric 2 and the first main fabric 1 are a single piece structure, the first main fabric 1 is located on the left side, the second main fabric 2 is located on the right side, and the drawstring part 3 is provided on the first The middle part of the second main cloth 2.
拉带部3自身对折重叠后，进行缝纫，形成了拉带结构，该拉带结构的一侧再与第一主布1缝纫在一起，最后将第一主布1与第二主布2的外边缘缝纫，形成一个完整封闭的气囊结构。After the drawstring part 3 is folded and overlapped in half, it is sewn to form a drawstring structure. One side of the drawstring structure is sewn together with the first main fabric 1, and finally the first main fabric 1 and the second main fabric 2 are sewn together. The outer edge is sewn to form a completely closed airbag structure.
本实施例中，第一主布1的形状与，将拉带部3自身缝纫后的第二主布2的形状相同，并且对称布置。第一主布1与第二主布2对折缝纫后正好完全重叠，然后将第一主布1和第二主布2的外边缘缝纫在一起。In this embodiment, the shape of the first main cloth 1 is the same as the shape of the second main cloth 2 after the strap 3 itself is sewn, and is arranged symmetrically. The first main fabric 1 and the second main fabric 2 are completely overlapped after being folded in half, and then the outer edges of the first main fabric 1 and the second main fabric 2 are sewn together.
本实施例中的膝部安全气囊为一片式结构，可以减少切片数量，减低库存管理。将拉带部3和第二主布2其中一侧的缝纫跟拉带部3自身的缝纫放在同一台自动缝纫机上面操作，可以减少操作工和机器,同时还可以减去一半的拉带缝纫定位线。The knee airbag in this embodiment has a one-piece structure, which can reduce the number of slices and reduce inventory management. Putting the sewing on one side of the drawstring part 3 and the second main fabric 2 and the sewing on the drawstring part 3 itself on the same automatic sewing machine can reduce the number of operators and machines, and at the same time, it can reduce the drawstring sewing by half. Positioning line.
进一步地，如图2所示，拉带部3有至少两个，每个拉带部3上开设有多个间隔布置的通孔34，通孔34作为气囊的内部通气孔。Furthermore, as shown in FIG. 2, there are at least two drawstring parts 3, and each drawstring part 3 is provided with a plurality of through holes 34 arranged at intervals, and the through holes 34 serve as internal air vents of the airbag.
本实施例中，通孔34包括两列，如图3所示，拉带部3对折后两列通孔34重叠。In this embodiment, the through holes 34 include two rows. As shown in FIG. 3, the two rows of through holes 34 overlap after the strap portion 3 is folded in half.
可选地，通孔34还可以为四列，拉带部3对折后两列通孔34重叠。Optionally, the through holes 34 may also be in four rows, and the two rows of through holes 34 overlap after the strap portion 3 is folded in half.
本实施例中，如图2所示，拉带部3有三个，长度从长到短依次包括第一拉带部31、第二拉带部32和第三拉带部33，第一拉带部31、第二拉带部32和第三拉带部33在第二主布2上朝向远离第一主布1的方向依次分布。In this embodiment, as shown in FIG. 2, there are three drawstring parts 3, and the lengths from longest to shortest include a first drawstring part 31, a second drawstring part 32, and a third drawstring part 33. The first drawstring The portion 31, the second strap portion 32 and the third strap portion 33 are sequentially distributed on the second main fabric 2 in a direction away from the first main fabric 1.
第一拉带部31、第二拉带部32和第三拉带部33将第二主布2分割成四部分。图2中第二主布2和拉带部3展开后的宽度大于第一主布1的宽度，图5中当三个拉带部3全部自身缝纫后，第二主布2的宽度与第一主布1相等。The first drawstring portion 31, the second drawstring portion 32, and the third drawstring portion 33 divide the second main cloth 2 into four parts. The width of the second main fabric 2 and the strap portion 3 after unfolding in Figure 2 is greater than the width of the first main fabric 1. In Figure 5, when the three strap portions 3 are all sewn by themselves, the width of the second main fabric 2 is greater than that of the first main fabric. One main cloth 1 is equal.
可选地，拉带部3还可以为两个，或三个以上，多个拉带部3间隔设置在第二主布2上。Optionally, there may be two or more than three pull-tape portions 3, and a plurality of pull-tape portions 3 are arranged on the second main cloth 2 at intervals.
进一步地，第一拉带部31、第二拉带部32和第三拉带部33依次对折缝纫。Further, the first drawstring portion 31, the second drawstring portion 32, and the third drawstring portion 33 are sequentially folded and sewn in half.
具体为，如图3所示，首先将第一拉带部31沿其上的第一对折线5对折，然后沿其上的第一缝纫线4将第一拉带部31缝纫。Specifically, as shown in FIG. 3, the first drawstring portion 31 is first folded along the first pair of folding lines 5 thereon, and then the first drawstring portion 31 is sewn along the first sewing line 4 thereon.
如图4所示，再将第二拉带部32沿其上的第一对折线5对折，然后沿其上的第一缝纫线4将第二拉带部32缝纫。As shown in Fig. 4, the second drawstring part 32 is folded in half along the first pair of folding lines 5 thereon, and then the second drawstring part 32 is sewn along the first sewing line 4 thereon.
如图5所示，再将第三拉带部33沿其上的第一对折线5对折，然后沿其上的第一缝纫线4将第三拉带部33缝纫。As shown in Fig. 5, the third drawstring part 33 is then folded in half along the first pair of folding lines 5 thereon, and then the third drawstring part 33 is sewn along the first sewing line 4 thereon.
三个拉带部3均缝纫后，被分割的第二主布2拼合完整，第二主布2的形状与第一主布1完全相同并且对称布置。After the three drawstring parts 3 are all sewn, the divided second main cloth 2 is completely assembled, and the shape of the second main cloth 2 is exactly the same as that of the first main cloth 1 and is arranged symmetrically.
可选地，也可以按照第三拉带部33、第二拉带部32和第一拉带部31的顺序依次对折缝纫；还可以先缝纫第二拉带部32，然后缝纫左右侧 的第一拉带部31和第三拉带部33。Optionally, the third drawstring portion 33, the second drawstring portion 32, and the first drawstring portion 31 can be folded and sewn in sequence; it is also possible to sew the second drawstring portion 32 first, and then sew the left and right side first portions. A drawstring part 31 and a third drawstring part 33.
可选地，第一拉带部31、第二拉带部32和第三拉带部33根据第二主布2的形状，其长度可以设置成相应的长度。Optionally, the lengths of the first drawstring portion 31, the second drawstring portion 32, and the third drawstring portion 33 can be set to corresponding lengths according to the shape of the second main cloth 2.
进一步地，如图2所示，拉带部3的左右侧设有第一缝纫线4，拉带部3的中心沿竖直方向设有第一对折线5，第二主布2上拉带部3的上下端均形成有缺口部6，缺口部6的底边为拉带部3的上侧边或下侧边，缺口部6的左右侧边与第一缝纫线4对接，一个拉带部3的两条第一缝纫线4重叠缝纫时，将缺口部6的左右侧边一起缝纫。Further, as shown in Figure 2, the left and right sides of the drawstring portion 3 are provided with first sewing threads 4, the center of the drawstring portion 3 is provided with a first pair of folding lines 5 along the vertical direction, and the second main fabric 2 is provided with a drawstring The upper and lower ends of the part 3 are formed with a notch 6, the bottom of the notch 6 is the upper or lower side of the drawstring part 3, the left and right sides of the notch 6 are butted with the first sewing thread 4, a drawstring When the two first sewing threads 4 of the part 3 overlap and sew, the left and right sides of the notch part 6 are sewn together.
具体为，第一对折线5位于拉带部3的中心沿竖直方向，三个拉带部3均设有第一对折线5。Specifically, the first pair of fold lines 5 are located at the center of the strap portion 3 along the vertical direction, and the three strap portions 3 are all provided with the first pair of fold lines 5.
拉带部3与第二主布2的分界处设置第一缝纫线4，每个拉带部3有两条相互平行的第一缝纫线4，三个拉带部3均设有第一缝纫线4。A first sewing thread 4 is provided at the boundary between the drawstring part 3 and the second main fabric 2. Each drawstring part 3 has two parallel first sewing threads 4, and the three drawstring parts 3 are all provided with first sewing threads. Line 4.
缺口部6位于拉带部3的上下侧，每个拉带部3均设有两个缺口部6。如图5所示，当拉带部3自身缝纫后，缺口部6消失，第二主布2的外边缘对接，缺口部6的左右侧边对接后与第一缝纫线4也一起缝纫。The notch portion 6 is located on the upper and lower sides of the drawstring portion 3, and each drawstring portion 3 is provided with two notches 6. As shown in Fig. 5, when the drawstring part 3 itself is sewn, the notch 6 disappears, the outer edges of the second main cloth 2 are butted, and the left and right sides of the notch 6 are butted together with the first sewing thread 4.
进一步地，如图6和图8所示，拉带部3上沿竖直方向还设有第二缝纫线7，通过第二缝纫线7将拉带部3与第一主布1缝纫。Furthermore, as shown in FIGS. 6 and 8, a second sewing thread 7 is further provided on the drawstring part 3 along the vertical direction, and the drawstring part 3 and the first main fabric 1 are sewn by the second sewing thread 7.
如图6所示，当拉带部3全部自身缝纫后，将拉带部3与第一主布1缝纫在一起，使得第一主布1与第二主布2重叠。如图8所示，第二缝纫线7接近于第一对折线5所在的位置，第二缝纫线7缝纫后，拉带部3位于第一主布1与第二主布2之间，拉带部3用于从气囊内部连接第一主布1和第二主布2。As shown in FIG. 6, when the drawstring part 3 is completely sewn by itself, the drawstring part 3 and the first main cloth 1 are sewn together, so that the first main cloth 1 and the second main cloth 2 overlap. As shown in Figure 8, the second sewing thread 7 is close to the position where the first pair of fold lines 5 are located. The strap 3 is used to connect the first main cloth 1 and the second main cloth 2 from the inside of the airbag.
进一步地，如图7-8所示，第一主布1和第二主布2的外边缘还设有 第三缝纫线8，通过第三缝纫线8将第一主布1与第二主布2缝纫。Further, as shown in Figures 7-8, the outer edges of the first main cloth 1 and the second main cloth 2 are also provided with a third sewing thread 8, through which the first main cloth 1 and the second main cloth 1 are connected to each other. Cloth 2 sewing.
第三缝纫线8位于第一主布1和第二主布2的外边缘，当拉带部3与第一主布1缝纫后，通过第三缝纫线8将第一主布1和第二主布2缝纫，完成整个气囊的缝纫。The third sewing thread 8 is located on the outer edges of the first main fabric 1 and the second main fabric 2. When the strap part 3 is sewn with the first main fabric 1, the first main fabric 1 and the second main fabric 1 are separated by the third sewing thread 8 The main cloth 2 is sewn to complete the sewing of the entire airbag.
进一步地，如图5所示，第一主布1与第二主布2之间还设有第二对折线9，第一主布1与第二主布2沿第二对折线9对折后，将两条第三缝纫线8缝纫。Further, as shown in FIG. 5, a second double fold line 9 is also provided between the first main cloth 1 and the second main cloth 2, and the first main cloth 1 and the second main cloth 2 are folded in half along the second double fold line 9 , Sew the two third sewing threads 8.
第一主布1与第二主布2之间通过第二对折线9对折，使得第一主布1和第二主布2完全重叠，然后可以通过第三缝纫线8缝纫在一起。The first main cloth 1 and the second main cloth 2 are folded in half by a second fold line 9 so that the first main cloth 1 and the second main cloth 2 are completely overlapped, and then they can be sewn together by the third sewing thread 8.
可选地，也可以不设置第二对折线9，第一主布1与第二主布2的对折处为弧形面。Optionally, the second double fold line 9 may not be provided, and the fold of the first main cloth 1 and the second main cloth 2 is an arc-shaped surface.
以上所述的仅是本发明的原理和较佳的实施例。应当指出，对于本领域的普通技术人员来说，在本发明原理的基础上，还可以做出若干其它变型，也应视为本发明的保护范围。What has been described above are only the principles and preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be regarded as the protection scope of the present invention.

Claims (9)

  1. 一种膝部安全气囊，其特征在于，所述膝部安全气囊为一片式，所述膝部安全气囊包括第一主布、第二主布和拉带部，所述拉带部设置在所述第二主布上，所述拉带部自身对折缝纫后，所述拉带部与所述第一主布缝纫，最后所述第一主布与所述第二主布对折缝纫。A knee airbag, characterized in that the knee airbag is of a one-piece type, the knee airbag includes a first main cloth, a second main cloth and a drawstring part, and the drawstring part is arranged at the On the second main fabric, after the strap portion itself is folded and sewn in half, the strap portion is sewn with the first main fabric, and finally the first main fabric and the second main fabric are folded and sewn in half.
  2. 根据权利要求1所述的膝部安全气囊，其特征在于，所述拉带部有至少两个，每个所述拉带部上开设有多个间隔布置的通孔。The knee airbag according to claim 1, wherein there are at least two pull strap portions, and each pull strap portion is provided with a plurality of through holes arranged at intervals.
  3. 根据权利要求2所述的膝部安全气囊，其特征在于，所述拉带部有三个，长度从长到短依次包括第一拉带部、第二拉带部和第三拉带部，所述第一拉带部、所述第二拉带部和所述第三拉带部在所述第二主布上朝向远离所述第一主布的方向依次分布。The knee airbag according to claim 2, characterized in that there are three pull strap parts, and the lengths from long to short include a first pull strap, a second pull strap, and a third pull strap. The first drawstring portion, the second drawstring portion, and the third drawstring portion are sequentially distributed on the second main cloth toward a direction away from the first main cloth.
  4. 根据权利要求3所述的膝部安全气囊，其特征在于，所述第一拉带部、所述第二拉带部和所述第三拉带部依次对折缝纫。The knee airbag according to claim 3, wherein the first drawstring part, the second drawstring part, and the third drawstring part are sequentially folded and sewn in half.
  5. 根据权利要求2所述的膝部安全气囊，其特征在于，所述通孔包括两列，所述拉带部对折后两列所述通孔重叠。The knee airbag according to claim 2, wherein the through holes include two rows, and the two rows of through holes overlap after the strap portion is folded in half.
  6. 根据权利要求1所述的膝部安全气囊，其特征在于，所述拉带部的左右侧设有第一缝纫线，所述拉带部的中心沿竖直方向设有第一对折线，所述第二主布上所述拉带部的上下端均形成有缺口部，所述缺口部的底边为所述拉带部的上侧边或下侧边，所述缺口部的左右侧边与所述第一缝纫线对接，一个所述拉带部的两条所述第一缝纫线重叠缝纫时，将所述缺口部的左右侧边一起缝纫。The knee airbag according to claim 1, wherein the left and right sides of the drawstring portion are provided with first sewing lines, and the center of the drawstring portion is provided with a first pair of fold lines along the vertical direction. The upper and lower ends of the pull strap portion on the second main cloth are formed with notches, the bottom of the notch is the upper side or the lower side of the pull strap, and the left and right sides of the notch When abutting with the first sewing thread, when the two first sewing threads of the one drawstring part are overlapped for sewing, the left and right sides of the notch part are sewn together.
  7. 根据权利要求6所述的膝部安全气囊，其特征在于，所述拉带部上沿竖直方向还设有第二缝纫线，通过所述第二缝纫线将所述拉带部与所述第一主布缝纫。The knee airbag according to claim 6, wherein a second sewing thread is further provided on the strap part along a vertical direction, and the strap part is connected to the strap part through the second sewing thread. The first main cloth is sewing.
  8. 根据权利要求7所述的膝部安全气囊，其特征在于，所述第一主布和所述第二主布的外边缘还设有第三缝纫线，通过所述第三缝纫线将所述第一主布与所述第二主布缝纫。The knee airbag according to claim 7, wherein the outer edges of the first main cloth and the second main cloth are further provided with a third sewing thread, and the third sewing thread is used to connect the The first main cloth is sewn with the second main cloth.
  9. 根据权利要求8所述的膝部安全气囊，其特征在于，所述第一主布与所述第二主布之间还设有第二对折线，所述第一主布与所述第二主 布沿所述第二对折线对折后，将两条所述第三缝纫线缝纫。The knee airbag according to claim 8, wherein a second fold line is further provided between the first main cloth and the second main cloth, and the first main cloth and the second main cloth are After the main fabric is folded in half along the second fold line, the two third sewing threads are sewn.
PCT/CN2021/081752 2020-06-23 2021-03-19 Knee airbag WO2021258791A1 (en)

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Citations (7)

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Publication number Priority date Publication date Assignee Title
US5906391A (en) * 1997-08-05 1999-05-25 Takata, Inc. Dual chamber airbag with improved assembly features
JP2005096626A (en) * 2003-09-25 2005-04-14 Toyoda Gosei Co Ltd Knee protection airbag apparatus
KR20090089994A (en) * 2008-02-20 2009-08-25 델파이코리아 주식회사 Knee air bag cushion
JP2009208772A (en) * 2009-05-22 2009-09-17 Toyoda Gosei Co Ltd Knee protecting airbag device
EP2204305A1 (en) * 2007-10-22 2010-07-07 Ashimori Industry Co., Ltd. Knee-protecting airbag device
CN201525347U (en) * 2009-10-22 2010-07-14 锦州锦恒汽车安全***有限公司 Knee air bag structure
JP2018052284A (en) * 2016-09-28 2018-04-05 豊田合成株式会社 Knee protection airbag

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906391A (en) * 1997-08-05 1999-05-25 Takata, Inc. Dual chamber airbag with improved assembly features
JP2005096626A (en) * 2003-09-25 2005-04-14 Toyoda Gosei Co Ltd Knee protection airbag apparatus
EP2204305A1 (en) * 2007-10-22 2010-07-07 Ashimori Industry Co., Ltd. Knee-protecting airbag device
KR20090089994A (en) * 2008-02-20 2009-08-25 델파이코리아 주식회사 Knee air bag cushion
JP2009208772A (en) * 2009-05-22 2009-09-17 Toyoda Gosei Co Ltd Knee protecting airbag device
CN201525347U (en) * 2009-10-22 2010-07-14 锦州锦恒汽车安全***有限公司 Knee air bag structure
JP2018052284A (en) * 2016-09-28 2018-04-05 豊田合成株式会社 Knee protection airbag

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