WO2024088406A1 - 气袋折叠方法、气袋和顶置式安全气囊 - Google Patents

气袋折叠方法、气袋和顶置式安全气囊 Download PDF

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Publication number
WO2024088406A1
WO2024088406A1 PCT/CN2023/127286 CN2023127286W WO2024088406A1 WO 2024088406 A1 WO2024088406 A1 WO 2024088406A1 CN 2023127286 W CN2023127286 W CN 2023127286W WO 2024088406 A1 WO2024088406 A1 WO 2024088406A1
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Prior art keywords
airbag
folded
folding
air bag
extension portion
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PCT/CN2023/127286
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English (en)
French (fr)
Inventor
陈勇
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采埃孚汽车科技(上海)有限公司
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Publication of WO2024088406A1 publication Critical patent/WO2024088406A1/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

Definitions

  • the invention relates to the technical field of safety airbags, in particular to an airbag folding method, an airbag and a top-mounted safety airbag.
  • Airbags are used to inflate and deploy quickly when a vehicle collides to provide collision protection for passengers.
  • the deployment posture of the airbag must also be considered.
  • the deployment posture of the airbags needs to ensure that the airbags will not hit the protected object, that is, the occupants, during the inflation and deployment process, so as to avoid safety hazards.
  • FIG1 shows the deployment posture of the current overhead airbag
  • the present invention provides an airbag folding method, an airbag and a top-mounted safety airbag.
  • the airbag of the top-mounted safety airbag can avoid hitting the protected object during the inflation and deployment process, thereby avoiding safety hazards and providing stable and reliable anti-collision protection.
  • an airbag folding method for a roof-mounted safety airbag wherein the airbag of the roof-mounted safety airbag comprises an inflatable portion for connecting to a gas generator and an extension portion extending from the inflatable portion; the airbag folding method comprises: spreading the airbag so that the extension portion is flattened, the inflatable portion is superimposed on the back of the extension portion, and the back of the extension portion is In the inflated and unfolded state, the two ends of the flattened extension portion are facing away from the inflatable portion and folded toward each other until the two ends of the extension portion overlap.
  • the two ends of the stretching portion include a first end and a second end; the two ends of the flattened stretching portion are turned away from the inflatable portion and folded toward each other until the two ends of the stretching portion overlap, including: turning the first end away from the inflatable portion and folding toward the second end; turning the second end away from the inflatable portion and folding toward the first end until the second end covers the first end.
  • the first end when the first end is folded away from the inflatable portion and toward the second end, the first end is folded multiple times according to a first folding size until the first end reaches the position of the inflatable portion; when the second end is folded away from the inflatable portion and toward the first end, the second end is folded multiple times according to a second folding size until the second end covers the first end.
  • both the first folding dimension and the second folding dimension are adapted to a width dimension of a housing of the overhead airbag.
  • the second end before the second end is turned away from the inflatable portion and folded toward the first end, it also includes: turning the two sides of the flattened extension portion away from the inflatable portion and folding them toward each other, until the distance between the two sides of the extension portion is adapted to the length dimension of the shell of the overhead airbag.
  • each side of the extension portion is folded at least twice, and the size of the first fold is smaller than the size of the subsequent fold.
  • the method further includes: folding the portion of the inflatable portion that exceeds the folded extension portion to cover the folded extension portion to form a folded air bag; and putting the folded air bag into an air bag wrapping cloth.
  • the stretching portion is formed by a symmetrical airbag cloth, and the stretching portion is connected to the inflatable portion by sewing; after the airbag is deployed, the symmetrical parts of the symmetrical airbag cloth and the sewing parts of the stretching portion and the inflatable portion respectively form the two ends of the flattened stretching portion.
  • the front side of the extension portion abuts against the steering wheel.
  • an air bag is provided for a roof-mounted air bag.
  • the airbag is folded by the airbag folding method described in any of the above embodiments.
  • a roof-mounted safety airbag comprising: an airbag as described in any of the above embodiments; and a gas generator connected to an inflation portion of the airbag.
  • the overhead safety airbag further comprises: a shell, wherein the airbag is accommodated in the shell.
  • the air bag folding scheme of the present invention makes the two ends of the extension part turn away from the inflatable part and turn toward each other, so that the two ends of the extension part turn toward each other away from the protected object. Therefore, during the inflation and deployment process of the air bag, the two ends of the extension part turn toward each other in the opposite direction of the turning path, and the deployment paths of the two ends are always located on the side of the air bag facing away from the protected object, which can effectively prevent the ends from bouncing against the protected object, thereby avoiding safety hazards and providing stable and reliable anti-collision protection.
  • Folding the two ends of the stretching portion away from the inflating portion can also make the stretching portion easier to unfold when inflated, so that the airbag can be inflated and unfolded quickly;
  • the airbag folding scheme of the present invention makes the folded airbag have a smaller size by folding the two ends of the extended portion to overlap each other, thereby facilitating assembly into the housing of the roof-mounted safety airbag.
  • FIG1 is a schematic diagram of a current overhead airbag in a deployment posture
  • FIG2 is a schematic diagram of an overhead airbag in an inflated and deployed state according to an embodiment of the present invention
  • FIG3 is a schematic diagram of the steps of an air bag folding method according to an embodiment of the present invention.
  • FIG4 is a side view schematic diagram of an air bag in an expanded state according to an embodiment of the present invention.
  • FIG5 is a schematic diagram of a symmetrical airbag fabric in an embodiment of the present invention.
  • FIG6 is a schematic diagram of the deployment posture of the overhead airbag in an embodiment of the present invention.
  • FIG7 is a diagram showing an example of laying out air bags in an embodiment of the present invention.
  • 15 to 17 are exemplary diagrams of the folding process of the second end of the extension portion in an embodiment of the present invention.
  • FIG18 is an exemplary diagram of moving the folded extension portion in an embodiment of the present invention.
  • FIG19 is a diagram showing an example of folding the inflatable portion in an embodiment of the present invention.
  • FIG20 is an example diagram of a top-mounted airbag in an embodiment of the present invention.
  • FIG21 is a cross-sectional view taken along line A-A’ of FIG20 .
  • the airbag folding scheme of the present invention is used for a top-mounted safety airbag, and the top-mounted safety airbag may include a top-mounted safety airbag on the driver's side and a top-mounted safety airbag on the passenger's side.
  • FIG. 2 shows the inflated and deployed state of the overhead airbag in the embodiment of the present invention
  • FIG. 3 shows the main steps of the airbag folding method in the embodiment of the present invention
  • the airbag 210 of the overhead airbag 200 has an inflatable portion 230 for connecting to the gas generator 220 and an extension portion 240 extending from the inflatable portion 230;
  • the airbag folding method includes:
  • Step S310 spreading the airbag 210, flattening the stretching portion 240 and overlapping the inflatable portion 230.
  • the back side 240 b of the expansion portion 240 faces the protected object in the inflated and expanded state.
  • FIG4 shows a side view of the airbag in the unfolded state according to an embodiment of the present invention
  • the stretching portion 240 is shown in solid lines
  • the inflating portion 230 is shown in dotted lines.
  • step S320 two ends of the flattened extension portion 240 are folded toward each other with their ends facing away from the inflatable portion 230 , until the two ends of the extension portion 240 overlap.
  • the above-mentioned airbag folding method is to fold the two ends of the extension part 240 away from the inflatable part 230 and towards each other, so that the two ends of the extension part 240 are folded towards each other away from the protected object; therefore, during the inflation and deployment process of the airbag 210, the two ends of the extension part 240 are deployed in opposite directions against the folding path, and the deployment paths of the two ends are always located on the side of the airbag away from the protected object, which can effectively prevent the ends from hitting the protected object, especially the face of the protected object, so as to avoid safety hazards, thereby providing stable and reliable anti-collision protection;
  • Folding the two ends of the extension portion 240 away from the inflatable portion 230 can also make the extension portion 240 easier to unfold in the inflated state, so that the airbag 210 can be inflated and unfolded quickly;
  • the above-mentioned airbag folding method makes the folded airbag 210 have a smaller size by folding the two ends of the extension portion 240 to overlap each other, so as to facilitate assembly into the housing of the roof-mounted airbag 200 .
  • the two ends of the extension portion 240 are defined as a first end 241 and a second end 242; thus, the two ends of the flattened extension portion 240 are turned away from the inflatable portion 230 and folded toward each other until the two ends of the extension portion 240 overlap, including: the first end 241 is turned away from the inflatable portion 230 and folded toward the second end 242; the second end 242 is turned away from the inflatable portion 230 and folded toward the first end 241 until the second end 242 covers the first end 241.
  • the first end 241 When the first end 241 is folded away from the inflatable portion 230 and toward the second end 242, the first end 241 is folded multiple times according to the first folding size until the first end 241 reaches the position of the inflatable portion 230; when the second end 242 is folded away from the inflatable portion 230 and toward the first end 241, the second end 242 is folded multiple times according to the second folding size until the second end 242 covers the first end 241.
  • the specific values of the first folding size and the second folding size can be set as needed;
  • the first folding size and the second folding size can be equal or different.
  • the first folding size and the second folding size are both adapted to the width of the housing of the overhead airbag 200; thus, the width of the folded airbag 210 can be adapted to the width of the housing of the overhead airbag 200.
  • the first end 241 and the second end 242 of the extension portion 240 can be folded using a folding ruler so that the first end 241 and the second end 242 can be accurately and conveniently folded according to the expected size.
  • a first folding ruler with a width equal to the first folding size can be used to fold the first end 241 away from the inflatable portion 230 and toward the second end 242;
  • a second folding ruler with a width equal to the second folding size can be used to fold the second end 242 away from the inflatable portion 230 and toward the first end 241.
  • the method further includes: folding the two sides of the flattened extension portion 240 away from the inflatable portion 230 and toward each other, until the distance between the two sides of the extension portion 240 is adapted to the length of the shell of the overhead airbag 200.
  • both sides of the extension portion 240 are folded away from the protected object.
  • the extension portion 240 is inflated and deployed along the folding direction, which can effectively prevent the side from hitting the protected object to avoid safety hazards, thereby providing stable and reliable anti-collision protection.
  • the folded airbag 210 can be smoothly assembled into the shell of the overhead airbag 200.
  • each side of the extension portion 240 is folded at least twice, and the size of the first fold is smaller than the size of the subsequent fold.
  • the process further includes: folding the portion of the inflatable portion 230 that exceeds the folded extension portion 240 to cover the folded extension portion 240 to form a folded air bag 210; and inserting the folded air bag 210 into an air bag wrapping cloth to form a fully folded air bag 210.
  • the stretching portion 240 is formed by symmetrical airbag cloth, and the stretching portion 240 is connected to the inflatable portion 230 by quilting; after the airbag 210 is spread out, the symmetrical parts of the symmetrical airbag cloth and the quilting parts of the stretching portion 240 and the inflatable portion 230 respectively form a flat stretching portion 240. both ends of .
  • the symmetrical airbag cloth can be a single piece of airbag cloth, or can be formed by sewing multiple pieces of airbag cloth.
  • FIG5 shows the structure of the symmetrical airbag cloth in an embodiment of the present invention, and FIG5 specifically shows a single piece of airbag cloth; in combination with FIG5 and FIG4 , after the airbag 210 is spread out, the symmetrical portion 510 of the symmetrical airbag cloth forms the first end 241 of the flattened stretching portion 240, and the sewing portion 520 between the stretching portion 240 and the inflatable portion 230 forms the second end 242 of the flattened stretching portion 240.
  • FIG6 shows the deployment posture of the overhead airbag in the embodiment of the present invention
  • the airbag 210 of the overhead airbag 200 folded by the above-mentioned airbag folding method is in the inflated and deployed state, with the back side 240b of the extending portion 240 facing but not hitting the protected object 120, and the front side 240a of the extending portion 240 stably abutting the steering wheel 150, thereby providing reliable anti-collision protection for the protected object 120.
  • the current top-mounted airbag has a poor deployment posture, so that the airbag 100 of the current top-mounted airbag is easy to hit the face of the protected object 120 during the inflation and deployment process.
  • the airbag 100 of the current top-mounted airbag cannot stably stick to the steering wheel 150 in the inflated and deployed state, resulting in the inability to provide reliable anti-collision protection.
  • An embodiment of the present invention also provides an airbag for a top-mounted safety airbag, wherein the airbag is folded by the airbag folding method described in any of the above embodiments, and can be folded toward each other by turning the two ends and both sides of the extending portion away from the inflating portion and folding toward each other, so that the two ends and both sides of the extending portion are respectively turned away from the protected object and folded toward each other, so that during the inflation and deployment process of the airbag, the two ends and both sides of the extending portion are respectively deployed away from each other in the opposite direction to the folding path, and the deployment paths of the two ends and both sides are always located on the side of the airbag away from the protected object, which can effectively prevent the ends and sides from hitting the protected object to avoid safety hazards, thereby providing stable and reliable anti-collision protection;
  • the airbag folded by the airbag folding method described in any of the above embodiments also has a size that is adapted to the shell of the top-mounted safety airbag, so that it can be smoothly assembled into the shell of the
  • the embodiment of the present invention also provides a top-mounted safety airbag, the top-mounted safety airbag comprising the airbag described in any of the above embodiments; and a gas generator connected to the inflation part of the airbag.
  • the top-mounted safety airbag of the embodiment of the present invention is folded by the airbag folding method described in any of the above embodiments, and has a better airbag deployment posture; in the inflated deployment state, the extension part of the airbag can be smoothly deployed onto the steering wheel, the front of the extension part is stably against the steering wheel, and the back of the extension part faces but does not bounce against the protected object, thereby providing reliable anti-collision protection for the protected object.
  • the overhead airbag further includes a shell for accommodating the folded airbag; the airbag folded by the airbag folding method described in any of the above embodiments has a size that matches the shell of the overhead airbag, so that it can be smoothly assembled into the shell.
  • FIG7 shows the unfolding state of the airbag in a specific example; as shown in FIG7 , the airbag 210 is first unfolded so that the stretching portion 240 is flattened and the inflatable portion 230 is overlapped on the back of the stretching portion 240 , and the back of the stretching portion 240 faces the protected object in the inflated unfolded state.
  • FIG 8 to 11 show the folding process of the first end of the extension part in a specific example; in combination with FIG8 to FIG11, after the air bag 210 is spread, the first end 241 of the extension part 240 is folded, and the first folding ruler 610 can be used to fold the first end 241 back to the inflatable part 230 and toward the second end 242 for multiple times until the first end 241 reaches the position of the inflatable part 230.
  • FIG8 shows the state where the first folding ruler 610 is aligned with the end edge of the first end 241
  • FIG9 shows the state where the first end 241 is folded twice
  • FIG10 shows the state where the first end 241 is folded four times; at this point, the first end 241 is folded completely, and the first folding ruler 610 is pulled out, presenting the state shown in FIG11.
  • the width dimension w1 of the first folding ruler 610 is 70 mm.
  • the width dimension of the first folding ruler 610 and the number of folding times of the first end 241 can be adjusted as needed, as long as the size of the folded airbag 210 can be adapted to the size of the housing of the overhead airbag.
  • FIG. 12 to FIG. 14 illustrate the folding process of the two sides of the extension portion in a specific example; in combination with FIG. 12 to FIG. 14, after the first end of the extension portion 240 is folded, the two sides 243 and 244 of the extension portion 240 continue to be folded.
  • a suitable folding ruler (not specifically shown in the figure) can be used to turn the two sides 243 and 244 of the extension portion 240 away from the inflation portion 230 and fold them toward each other until the distance between the two sides 243 and 244 of the extension portion 240 is adapted to the length dimension of the shell of the overhead airbag.
  • FIG. 12 shows the state of the first folding of one side 243 of the extension portion 240, and the folding dimension H1 is 70mm;
  • FIG. 13 shows the state of the second folding of one side 243 of the extension portion 240, and the folding dimension H2 is 140mm;
  • FIG. 14 shows the state of the other side 243 of the extension portion 240.
  • the side 244 is folded twice.
  • the distance H3 between the two sides 243 and 244 is 280 mm.
  • the folding size and folding times of the two sides 243 and 244 can be adjusted as needed, as long as the size of the folded airbag 210 can be adapted to the size of the housing of the roof-mounted airbag.
  • Figures 15 to 17 show the folding process of the second end of the extension part in a specific example; in combination with Figures 15 to 17, after the two sides of the extension part 240 are folded, the second end 242 of the folded extension part 240 can be folded, and the second folding ruler 620 can be used to fold the second end 242 back to the inflatable part 230 and toward the first end 241 for multiple times until the second end 242 covers the first end 241.
  • Figure 15 shows the state where the second folding ruler 620 is aligned with the end edge of the second end 242
  • Figure 16 shows the state where the second end 242 is folded four times; at this point, the second end 242 is folded completely, and the second folding ruler 620 is pulled out, presenting the state shown in Figure 17.
  • the width dimension w2 of the second folding ruler 620 is 70 mm. In other examples, the width dimension of the second folding ruler 620, the number of folding times of the second end 242, etc. can be adjusted as needed, and are not limited to the examples in this example.
  • FIG18 shows an example of moving the folded extension portion in a specific example; as shown in FIG18 , after the extension portion 240 is folded, the folded extension portion 240 can be moved and adjusted to be aligned with the inflation port 230' of the inflation portion 230, so that the folded airbag 210 can be subsequently assembled into the housing of the overhead airbag.
  • FIG19 shows the folded state of the inflatable part in a specific example; in combination with FIG18 and FIG19, after the extension part 240 is folded and adjusted, the portion of the inflatable part 230 that exceeds the folded and adjusted extension part 240 is folded to cover the folded and adjusted extension part 240, forming a folded air bag 210. Subsequently, the folded air bag 210 is put into the air bag wrapping cloth, that is, the folded air bag 210 is formed.
  • the fully folded airbag 210 has a width of 125 mm, a length of 280 mm, and a thickness (not specifically indicated in the figure) of 25 mm, which can be adapted to the shell size of a roof-mounted airbag.
  • FIG20 shows an example of a top-mounted safety airbag in a specific example
  • FIG21 shows the cross-sectional structure along the A-A' section line of FIG20 ; in combination with FIG20 and FIG21 , as well as FIG2 and FIG6 , in the overhead airbag 200 , the gas generator 220 is connected to the inflation port 230' of the inflation portion 230 , and the first end 241 and the second end 242 of the extension portion 240 extending from the inflation portion 230 (the two sides of the extension portion 240 are not shown in the cross-sectional view) are respectively facing away from the inflation portion 230 and folded toward each other for multiple turns; in the inflated and deployed state, the first end 241 and the second end 242 of the extension portion 240 extending from the inflation portion 230 are respectively facing away from the inflation portion 230 and folded toward each other for multiple turns; in the inflated and deployed state, the first end 241 and the second end 242 of the extension portion 240 One end 241 and the second end 242 are unfolded in opposite directions against the folding path, and the unfolding path of the first end 241 and the second end 242
  • the airbag folding scheme of the present invention is to make the two ends and two sides of the extension part respectively face away from the protected object and fold them toward each other, so that during the inflation and deployment process of the airbag, the two ends and two sides of the extension part respectively unfold in opposite directions against the folding path, and the deployment paths of the two ends and two sides are always located on the side of the airbag facing away from the protected object, which can effectively prevent the ends and sides from hitting the protected object, thereby avoiding safety hazards, and thus providing stable and reliable anti-collision protection;
  • Folding the two ends and two sides of the stretching portion away from the inflating portion can also make the stretching portion easier to unfold in the inflated state, so that the airbag can be inflated and unfolded quickly;
  • the airbag folded by the airbag folding scheme of the present invention also has a size that is adapted to the housing of the overhead safety airbag, so that it can be smoothly assembled into the housing of the overhead safety airbag;
  • the airbag folded by adopting the airbag folding scheme of the present invention has a better airbag deployment posture; in the inflated and deployed state, the extended portion of the airbag of the top-mounted airbag can be smoothly deployed onto the steering wheel, with the front side of the extended portion stably attached to the steering wheel and the back side facing but not hitting the protected object, thereby providing reliable anti-collision protection for the protected object.

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

Abstract

一种气袋（210）折叠方法，涉及安全气囊技术领域，顶置式安全气囊（200）的气袋具有用于连接气体发生器的充气部（230）和自充气部延伸的伸展部（240）；气袋折叠方法包括铺展气袋，使伸展部铺平、充气部叠置于伸展部的背面（240），伸展部的背面在充气展开状态下朝向被保护对象；将铺平的伸展部的两端背向充气部、且相向翻折，至伸展部的两端相重叠。该方法能够通过气袋折叠方式的改进，使顶置式安全气囊的气袋在充气展开过程中避免弹打被保护对象，以避免安全隐患，从而能够提供稳定可靠的防撞保护。还披露了一种气袋和顶置式安全气囊。

Description

气袋折叠方法、气袋和顶置式安全气囊 技术领域
本发明涉及安全气囊技术领域，具体地说，涉及一种气袋折叠方法、气袋和顶置式安全气囊。
背景技术
安全气囊用于在车辆发生撞击时迅速充气展开，为乘员提供防撞保护。安全气囊在设计时，除需考虑能否在设定条件下充气展开、能否及时泄气收缩以吸收冲击能量等因素，还需考虑气袋展开姿态。
尤其是顶置式安全气囊，其气袋展开姿态需要确保气袋充气展开过程中不会弹打到被保护对象，也即乘员，以免造成安全隐患。
图1示出目前的顶置式安全气囊的气袋展开姿态；参照图1所示，目前的顶置式安全气囊的气袋展开姿态较差，目前的顶置式安全气囊的气袋100在充气展开过程中容易弹打到被保护对象120的脸部，造成安全隐患。
需要说明的是，上述背景技术部分公开的信息仅用于加强对本发明的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
有鉴于此，本发明提供一种气袋折叠方法、气袋和顶置式安全气囊，能够通过气袋折叠方式的改进，使顶置式安全气囊的气袋在充气展开过程中避免弹打到被保护对象，以避免安全隐患，从而能够提供稳定可靠的防撞保护。
根据本发明的一个方面，提供一种气袋折叠方法，用于顶置式安全气囊，所述顶置式安全气囊的气袋具有用于连接气体发生器的充气部和自所述充气部延伸的伸展部；所述气袋折叠方法包括：铺展所述气袋，使所述伸展部铺平、所述充气部叠置于所述伸展部的背面，所述伸展部的背面在 充气展开状态下朝向被保护对象；将铺平的所述伸展部的两端背向所述充气部、且相向翻折，至所述伸展部的两端相重叠。
在一些实施例中，所述伸展部的两端包括第一端和第二端；所述将铺平的所述伸展部的两端背向所述充气部、且相向翻折，至所述伸展部的两端相重叠，包括：将所述第一端背向所述充气部、并朝向所述第二端翻折；将所述第二端背向所述充气部、并朝向所述第一端翻折，至所述第二端覆盖所述第一端。
在一些实施例中，所述将所述第一端背向所述充气部、并朝向所述第二端翻折时，按第一翻折尺寸多次翻折所述第一端，至所述第一端到达所述充气部的位置；所述将所述第二端背向所述充气部、并朝向所述第一端翻折时，按第二翻折尺寸多次翻折所述第二端，至所述第二端覆盖所述第一端。
在一些实施例中，所述第一翻折尺寸和所述第二翻折尺寸均适配所述顶置式安全气囊的壳体的宽度尺寸。
在一些实施例中，所述将所述第二端背向所述充气部、并朝向所述第一端翻折之前，还包括：将铺平的所述伸展部的两侧背向所述充气部、且相向翻折，至所述伸展部的两侧之间的距离适配所述顶置式安全气囊的壳体的长度尺寸。
在一些实施例中，所述伸展部的每侧至少翻折两次，且第一次翻折的尺寸小于后续翻折的尺寸。
在一些实施例中，所述至所述伸展部的两端相重叠之后，还包括：将所述充气部的超出折叠好的所述伸展部的部分翻折至覆盖折叠好的所述伸展部，形成折叠好的气袋；以及，将所述折叠好的气袋套装入气袋包布中。
在一些实施例中，所述伸展部由对称的气囊布形成，所述伸展部与所述充气部衍缝连接；所述气袋铺展后，所述对称的气囊布的对称部位、及所述伸展部与所述充气部的衍缝部位分别形成铺平的所述伸展部的两端。
在一些实施例中，在所述充气展开状态下，所述伸展部的正面贴靠方向盘。
根据本发明的又一个方面，提供一种气袋，用于顶置式安全气囊，所 述气袋通过上述任意实施例所述的气袋折叠方法折叠而成。
根据本发明的又一个方面，提供一种顶置式安全气囊，包括：如上述任意实施例所述的气袋；以及气体发生器，连接所述气袋的充气部。
在一些实施例中，所述顶置式安全气囊还包括：壳体，所述气袋容置于所述壳体中。
本发明与现有技术相比的有益效果至少包括：
本发明的气袋折叠方案，通过将伸展部的两端背向充气部、且相向翻折，使伸展部的两端背向被保护对象相向翻折，从而在气袋的充气展开过程中，伸展部的两端逆着翻折路径背向展开，且两端的展开路径始终位于气袋背向被保护对象的一面，能够有效避免端部弹打被保护对象，以避免安全隐患，从而能够提供稳定可靠的防撞保护；
将伸展部的两端背向充气部翻折，还能使伸展部在充气状态下更容易展开，从而气袋能够迅速充气展开；
此外，本发明的气袋折叠方案，通过将伸展部的两端翻折至相重叠，使折叠好的气袋具有较小的尺寸，从而便于装配至顶置式安全气囊的壳体中。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本发明。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。显而易见地，下面描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是目前的顶置式安全气囊的气袋展开姿态的示意图；
图2是本发明实施例中顶置式安全气囊的充气展开状态的示意图；
图3是本发明实施例中气袋折叠方法的步骤示意图；
图4是本发明实施例中气袋铺展状态的侧视示意图；
图5是本发明实施例中对称的气囊布的示意图；
图6是本发明实施例中顶置式安全气囊的气袋展开姿态的示意图；
图7是本发明实施例中气袋的铺展示例图；
图8至图11是本发明实施例中伸展部的第一端的折叠过程示例图；
图12至图14是本发明实施例中伸展部的两侧的折叠过程示例图；
图15至图17是本发明实施例中伸展部的第二端的折叠过程示例图；
图18是本发明实施例中对折叠好的伸展部进行移动的示例图；
图19是本发明实施例中充气部的折叠示例图；
图20是本发明实施例中顶置式安全气囊的示例图；
图21是图20的A-A’剖面图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式。相反，提供这些实施方式使本发明全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。
附图仅为本发明的示意性图解，并非一定是按比例绘制。图中相同的附图标记表示相同或类似的部分，因而将省略对它们的重复描述。
此外，附图中所示的流程仅是示例性说明，不是必须包括所有的步骤。例如，有的步骤可以分解，有的步骤可以合并或部分合并，且实际执行的顺序有可能根据实际情况改变。具体描述时使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。需要说明的是，在不冲突的情况下，本发明的实施例及不同实施例中的特征可以相互组合。
本发明的气袋折叠方案，用于顶置式安全气囊，所说的顶置式安全气囊可包括驾驶侧的顶置式安全气囊和副驾驶侧的顶置式安全气囊。
图2示出本发明实施例中顶置式安全气囊的充气展开状态，图3示出本发明实施例中气袋折叠方法的主要步骤；结合图2和图3所示，顶置式安全气囊200的气袋210具有用于连接气体发生器220的充气部230和自充气部230延伸的伸展部240；气袋折叠方法包括：
步骤S310，铺展气袋210，使伸展部240铺平、充气部230叠置于伸 展部240的背面240b，伸展部240的背面240b在充气展开状态下朝向被保护对象。
图4示出本发明实施例中气袋铺展状态的侧视结构；结合图4所示，以实线示出伸展部240，以虚线示出充气部230。将气袋210铺展后，伸展部240处于铺平状态，充气部230叠置于伸展部240的背面240b。
步骤S320，将铺平的伸展部240的两端背向充气部230、且相向翻折，至伸展部240的两端相重叠。
结合图4所示的两个翻折箭头，对伸展部240进行翻折时，伸展部240的两端(包括241和242)背向充气部230、且相向翻折。
上述的气袋折叠方法，通过将伸展部240的两端背向充气部230、且相向翻折，使伸展部240的两端背向被保护对象相向翻折；从而在气袋210的充气展开过程中，伸展部240的两端逆着翻折路径背向展开，且两端的展开路径始终位于气袋背向被保护对象的一面，能够有效避免端部弹打被保护对象，尤其避免端部弹打到被保护对象的脸部，以避免安全隐患，从而能够提供稳定可靠的防撞保护；
将伸展部240的两端背向充气部230翻折，还能使伸展部240在充气状态下更容易展开，从而气袋210能够迅速充气展开；
此外，上述的气袋折叠方法，通过将伸展部240的两端翻折至相重叠，使折叠好的气袋210具有较小的尺寸，从而便于装配至顶置式安全气囊200的壳体中。
在一个实施例中，将伸展部240的两端定义为第一端241和第二端242；从而，将铺平的伸展部240的两端背向充气部230、且相向翻折，至伸展部240的两端相重叠，包括：将第一端241背向充气部230、并朝向第二端242翻折；将第二端242背向充气部230、并朝向第一端241翻折，至第二端242覆盖第一端241。
其中，将第一端241背向充气部230、并朝向第二端242翻折时，按第一翻折尺寸多次翻折第一端241，至第一端241到达充气部230的位置；将第二端242背向充气部230、并朝向第一端241翻折时，按第二翻折尺寸多次翻折第二端242，至第二端242覆盖第一端241。
第一翻折尺寸和第二翻折尺寸的具体数值可根据需要设置；第一翻折 尺寸和第二翻折尺寸可以相等、或有所差异。在一个实施例中，第一翻折尺寸和第二翻折尺寸均适配顶置式安全气囊200的壳体的宽度尺寸；从而，能够使折叠好的气袋210的宽度尺寸适配顶置式安全气囊200的壳体的宽度尺寸。
在操作时，可以使用折叠尺折叠伸展部240的第一端241和第二端242，以使第一端241和第二端242能够按照预想的尺寸精准且方便地折叠。具体而言，折叠第一端241时，可使用宽度尺寸等于第一翻折尺寸的第一折叠尺，将第一端241背向充气部230、并朝向第二端242翻折；折叠第二端242时，可使用宽度尺寸等于第二翻折尺寸的第二折叠尺，将第二端242背向充气部230、并朝向第一端241翻折。
在一个实施例中，第一端241折叠完成后、第二端242折叠开始前，还包括：将铺平的伸展部240的两侧背向充气部230、且相向翻折，至伸展部240的两侧之间的距离适配顶置式安全气囊200的壳体的长度尺寸。
通过将伸展部240的两侧背向充气部230、且相向翻折，使伸展部240的两侧均背向被保护对象翻折，从而在气袋210的充气展开过程中，伸展部240沿着翻折方向充气展开，能够有效避免侧部弹打被保护对象，以避免安全隐患，从而能够提供稳定可靠的防撞保护；此外，通过将伸展部240的两侧翻折至相隔距离适配顶置式安全气囊200的壳体的长度尺寸，使折叠好的气袋210能够顺利装配至顶置式安全气囊200的壳体中。
在一个实施例中，伸展部240的每侧至少翻折两次，且第一次翻折的尺寸小于后续翻折的尺寸。通过将伸展部240的每侧第一次翻折较小的尺寸而后续翻折较大的尺寸，能够避免充气状态下伸展部240的两侧边缘在顶置式安全气囊200的壳体中卡住，从而使气袋210能够顺利展开。
在一个实施例中，伸展部240折叠完成后，还包括：将充气部230的超出折叠好的伸展部240的部分翻折至覆盖折叠好的伸展部240，形成折叠好的气袋210；以及，将折叠好的气袋210套装入气袋包布中，形成折叠完备的气袋210。
进一步地，在上述各实施例中，伸展部240由对称的气囊布形成，伸展部240与充气部230衍缝连接；气袋210铺展后，对称的气囊布的对称部位、及伸展部240与充气部230的衍缝部位分别形成铺平的伸展部240 的两端。
其中，对称的气囊布可以是一片式气囊布，或者可以由多片气囊布衍缝而成。图5示出本发明实施例中对称的气囊布的结构，图5示出的具体是一片式气囊布；结合图5和图4所示，气袋210铺展后，对称的气囊布的对称部位510形成铺平的伸展部240的第一端241，伸展部240与充气部230的衍缝部位520形成铺平的伸展部240的第二端242。
图6示出本发明实施例中顶置式安全气囊的气袋展开姿态；结合图6和图2所示，本发明实施例中，采用上述的气袋折叠方法折叠形成的顶置式安全气囊200的气袋210在充气展开状态下，伸展部240的背面240b朝向但不会弹打被保护对象120，伸展部240的正面240a稳定地贴靠方向盘150，从而对被保护对象120提供可靠的防撞保护。
而目前的顶置式安全气囊，可结合图1所示，由于其气袋展开姿态较差，导致目前的顶置式安全气囊的气袋100在充气展开过程中容易弹打被保护对象120的脸部，且目前的顶置式安全气囊的气袋100在充气展开状态下无法稳定地贴靠方向盘150，导致无法提供可靠的防撞保护。
本发明实施例还提供一种气袋，用于顶置式安全气囊，所说的气袋通过上述任意实施例描述的气袋折叠方法折叠而成，能够通过伸展部的两端和两侧均背向充气部、且相向翻折，使伸展部的两端和两侧分别背向被保护对象相向翻折，从而在气袋的充气展开过程中，伸展部的两端和两侧分别逆着翻折路径背向展开，且两端和两侧的展开路径始终位于气袋背向被保护对象的一面，能够有效避免端部和侧部弹打到被保护对象，以避免安全隐患，从而能够提供稳定可靠的防撞保护；此外，通过上述任意实施例描述的气袋折叠方法折叠而成的气袋，还具有适配顶置式安全气囊的壳体的尺寸，从而能够顺利装配至顶置式安全气囊的壳体中。
本发明实施例还提供一种顶置式安全气囊，所说的顶置式安全气囊包括上述任意实施例描述的气袋；以及气体发生器，连接气袋的充气部。本发明实施例的顶置式安全气囊，采用上述任意实施例描述的气袋折叠方法折叠而成的气袋，具有较好的气袋展开姿态；在充气展开状态下，气袋的伸展部能够顺利展开至方向盘上，伸展部的正面稳定地贴靠方向盘、且背面朝向但不会弹打被保护对象，从而对被保护对象提供可靠的防撞保护。
在一个实施例中，顶置式安全气囊还包括壳体，用于容置折叠好的气袋；通过上述任意实施例描述的气袋折叠方法折叠而成的气袋，具有适配顶置式安全气囊的壳体的尺寸，从而能够顺利装配至壳体中。
下面结合具体示例图，对顶置式安全气囊的气袋折叠过程进行说明。上述任意实施例描述的气袋折叠方法的特征和原理均可应用至下面的具体示例中。在下面的具体示例中，对上述各实施例中已经阐明的气袋折叠方法的特征和原理不再重复说明。
图7示出具体示例中气袋的铺展状态；参照图7所示，首先铺展气袋210，使伸展部240铺平、充气部230叠置于伸展部240的背面，伸展部240的背面在充气展开状态下朝向被保护对象。
图8-图11示出具体示例中伸展部的第一端的折叠过程；结合图8至图11所示，铺展气袋210后，折叠伸展部240的第一端241，可使用第一折叠尺610，将第一端241背向充气部230、并朝向第二端242多次翻折，至第一端241到达充气部230的位置。图8至图11中，图8示出将第一折叠尺610与第一端241的端部边缘对齐的状态，图9示出第一端241折叠了两次的状态，图10示出第一端241折叠了四次的状态；至此，第一端241折叠完毕，抽出第一折叠尺610，呈现图11所示的状态。
本示例中，第一折叠尺610的宽度尺寸w1为70mm。在其他示例中，第一折叠尺610的宽度尺寸、第一端241的翻折次数，均可根据需要调整，只要确保折叠好的气袋210的尺寸能够适配顶置式安全气囊的壳体的尺寸即可。
图12-图14示出具体示例中伸展部的两侧的折叠过程；结合图12至图14所示，伸展部240的第一端折叠完成后，继续折叠伸展部240的两侧243和244，同样可使用合适的折叠尺(图中未具体示出)，将伸展部240的两侧243和244背向充气部230、且相向翻折，至伸展部240的两侧243和244之间的距离适配顶置式安全气囊的壳体的长度尺寸。图12至图14中，图12示出对伸展部240的一侧243进行第一次折叠的状态，折叠的尺寸H1为70mm；图13示出对伸展部240的一侧243进行第二次折叠的状态，折叠的尺寸H2为140mm；图14示出对伸展部240的另一 侧244折叠了两次的状态。
本示例中，对伸展部240的两侧243和244分别折叠两次后，两侧243和244之间的距离H3为280mm。在其他示例中，两侧243和244的折叠尺寸、翻折次数等，均可根据需要调整，只要确保折叠好的气袋210的尺寸能够适配顶置式安全气囊的壳体的尺寸即可。
图15-图17示出具体示例中伸展部的第二端的折叠过程；结合图15至图17所示，伸展部240的两侧折叠完成后，折叠伸展部240的第二端242，可使用第二折叠尺620，将第二端242背向充气部230、并朝向第一端241多次翻折，至第二端242覆盖第一端241。图15至图17中，图15示出将第二折叠尺620与第二端242的端部边缘对齐的状态，图16示出第二端242折叠了四次的状态；至此，第二端242折叠完毕，抽出第二折叠尺620，呈现图17所示的状态。
本示例中，第二折叠尺620的宽度尺寸w2为70mm。在其他示例中，第二折叠尺620的宽度尺寸、第二端242的翻折次数等，均可根据需要调整，而不以本示例中例举为限。
图18示出具体示例中对折叠好的伸展部进行移动的示例；参照图18所示，伸展部240折叠完成后，可将折叠好的伸展部240移动调整至与充气部230的充气口230’对齐，以便后续将折叠好的气袋210装配入顶置式安全气囊的壳体中。
图19示出具体示例中充气部的折叠状态；结合图18和图19所示，伸展部240折叠并调整完成后，将充气部230的超出折叠并调整好的伸展部240的部分翻折至覆盖折叠并调整好的伸展部240，形成折叠好的气袋210。后续，将折叠好的气袋210套装入气袋包布中，即形成折叠完备的气袋210。
本示例中，折叠完备的气袋210的宽度尺寸为125mm，长度尺寸为280mm，厚度尺寸(图中未具体标示)为25mm，能够适配顶置式安全气囊的壳体尺寸。
图20示出具体示例中顶置式安全气囊的示例；结合图19和图20所示，气袋210折叠完备后，将折叠完备的气袋210装配至顶置式安全气囊200的壳体(图中未具体示出)中，并在充气部230的充气口230’连接气 体发生器220，即形成顶置式安全气囊200。
图21示出沿图20的A-A’剖线的剖面结构；结合图20和图21、以及图2和图6所示，在顶置式安全气囊200中，气体发生器220连接充气部230的充气口230’，自充气部230延伸的伸展部240的第一端241和第二端242(剖视图中未示意出伸展部240的两侧)分别背向充气部230、且相向翻折多圈；在充气展开状态下，伸展部240的第一端241和第二端242逆着翻折路径背向展开，且第一端241和第二端242的展开路径始终位于气袋210背向被保护对象120的一面，能够避免弹打到被保护对象120，以避免安全隐患；伸展部240的两侧的展开过程与两端的展开过程同理，不再重复说明；此外，充气展开后伸展部240的正面240a稳定地贴靠方向盘150，能够提供可靠的防撞保护。
综上，本发明的气袋折叠方案，通过将伸展部的两端和两侧分别背向被保护对象、且相向翻折，使气袋在充气展开过程中，伸展部的两端和两侧分别逆着翻折路径背向展开，且两端和两侧的展开路径始终位于气袋背向被保护对象的一面，能够有效避免端部和侧部弹打到被保护对象，以避免安全隐患，从而能够提供稳定可靠的防撞保护；
将伸展部的两端和两侧背向充气部翻折，还能使伸展部在充气状态下更容易展开，从而气袋能够迅速充气展开；
采用本发明的气袋折叠方案折叠而成的气袋，还具有适配顶置式安全气囊的壳体的尺寸，从而能够顺利装配至顶置式安全气囊的壳体中；
此外，采用本发明的气袋折叠方案折叠而成的气袋，具有较好的气袋展开姿态；使得在充气展开状态下，顶置式安全气囊的气袋的伸展部能够顺利展开至方向盘上，伸展部的正面稳定地贴靠方向盘、且背面朝向但不会弹打被保护对象，对被保护对象提供可靠的防撞保护。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (12)

  1. 一种气袋折叠方法，用于顶置式安全气囊，其特征在于，
    所述顶置式安全气囊的气袋具有用于连接气体发生器的充气部和自所述充气部延伸的伸展部；
    所述气袋折叠方法包括：
    铺展所述气袋，使所述伸展部铺平、所述充气部叠置于所述伸展部的背面，所述伸展部的背面在充气展开状态下朝向被保护对象；
    将铺平的所述伸展部的两端背向所述充气部、且相向翻折，至所述伸展部的两端相重叠。
  2. 如权利要求1所述的气袋折叠方法，其特征在于，所述伸展部的两端包括第一端和第二端；
    所述将铺平的所述伸展部的两端背向所述充气部、且相向翻折，至所述伸展部的两端相重叠，包括：
    将所述第一端背向所述充气部、并朝向所述第二端翻折；
    将所述第二端背向所述充气部、并朝向所述第一端翻折，至所述第二端覆盖所述第一端。
  3. 如权利要求2所述的气袋折叠方法，其特征在于，所述将所述第一端背向所述充气部、并朝向所述第二端翻折时，按第一翻折尺寸多次翻折所述第一端，至所述第一端到达所述充气部的位置；
    所述将所述第二端背向所述充气部、并朝向所述第一端翻折时，按第二翻折尺寸多次翻折所述第二端，至所述第二端覆盖所述第一端。
  4. 如权利要求3所述的气袋折叠方法，其特征在于，所述第一翻折尺寸和所述第二翻折尺寸均适配所述顶置式安全气囊的壳体的宽度尺寸。
  5. 如权利要求2所述的气袋折叠方法，其特征在于，所述将所述第二端背向所述充气部、并朝向所述第一端翻折之前，还包括：
    将铺平的所述伸展部的两侧背向所述充气部、且相向翻折，至所述伸展部的两侧之间的距离适配所述顶置式安全气囊的壳体的长度尺寸。
  6. 如权利要求5所述的气袋折叠方法，其特征在于，所述伸展部的每侧至少翻折两次，且第一次翻折的尺寸小于后续翻折的尺寸。
  7. 如权利要求1所述的气袋折叠方法，其特征在于，所述至所述伸展部的两端相重叠之后，还包括：
    将所述充气部的超出折叠好的所述伸展部的部分翻折至覆盖折叠好的所述伸展部，形成折叠好的气袋；以及
    将所述折叠好的气袋套装入气袋包布中。
  8. 如权利要求1所述的气袋折叠方法，其特征在于，所述伸展部由对称的气囊布形成，所述伸展部与所述充气部衍缝连接；
    所述气袋铺展后，所述对称的气囊布的对称部位、及所述伸展部与所述充气部的衍缝部位分别形成铺平的所述伸展部的两端。
  9. 如权利要求1-8任一项所述的气袋折叠方法，其特征在于，在所述充气展开状态下，所述伸展部的正面贴靠方向盘。
  10. 一种气袋，用于顶置式安全气囊，其特征在于，所述气袋通过权利要求1-9任一项所述的气袋折叠方法折叠而成。
  11. 一种顶置式安全气囊，其特征在于，包括：
    如权利要求10所述的气袋；以及
    气体发生器，连接所述气袋的充气部。
  12. 如权利要求11所述的顶置式安全气囊，其特征在于，还包括：
    壳体，所述气袋容置于所述壳体中。
PCT/CN2023/127286 2022-10-28 2023-10-27 气袋折叠方法、气袋和顶置式安全气囊 WO2024088406A1 (zh)

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* Cited by examiner, † Cited by third party
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US20120326421A1 (en) * 2011-06-24 2012-12-27 Akihiro Motomochi Airbag device and airbag folding method
CN103359044A (zh) * 2012-04-05 2013-10-23 奥托立夫开发公司 汽车安全气囊及其折叠方法和推压装置
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CN113752977A (zh) * 2020-06-03 2021-12-07 宁波均胜汽车安全系统有限公司 安全气囊折叠的方法和安全气囊装置

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Publication number Priority date Publication date Assignee Title
US20120326421A1 (en) * 2011-06-24 2012-12-27 Akihiro Motomochi Airbag device and airbag folding method
CN103359044A (zh) * 2012-04-05 2013-10-23 奥托立夫开发公司 汽车安全气囊及其折叠方法和推压装置
CN103569022A (zh) * 2012-07-27 2014-02-12 现代摩比斯株式会社 安全气囊垫的折叠方法
CN208101907U (zh) * 2018-03-22 2018-11-16 延锋百利得（上海）汽车安全系统有限公司 一种顶棚式正面保护安全气囊装置
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