CN117984937A - Airbag folding method, airbag and overhead airbag - Google Patents
Airbag folding method, airbag and overhead airbag Download PDFInfo
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- CN117984937A CN117984937A CN202211335369.9A CN202211335369A CN117984937A CN 117984937 A CN117984937 A CN 117984937A CN 202211335369 A CN202211335369 A CN 202211335369A CN 117984937 A CN117984937 A CN 117984937A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000004744 fabric Substances 0.000 claims description 17
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
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- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The invention relates to the technical field of safety airbags, and provides an air bag folding method, an air bag and an overhead safety airbag. The airbag of the overhead airbag has an inflation portion for connecting to a gas generator and an extension portion extending from the inflation portion; the air bag folding method comprises the following steps: spreading the air bag to enable the stretching part to be paved and the inflating part to be overlapped on the back surface of the stretching part, wherein the back surface of the stretching part faces to a protected object in an inflating and unfolding state; and folding the two ends of the paved extension part back to the inflatable part in opposite directions until the two ends of the extension part are overlapped. According to the invention, the airbag of the overhead type airbag can avoid flicking a protected object in the inflation and deployment process through the improvement of the folding mode of the airbag, so that potential safety hazards are avoided, and stable and reliable anti-collision protection can be provided.
Description
Technical Field
The invention relates to the technical field of safety airbags, in particular to an airbag folding method, an airbag and an overhead safety airbag.
Background
Airbags are used to rapidly inflate and deploy upon impact of a vehicle to provide collision protection to occupants. When the air bag is designed, the factors of inflation and deployment under the set condition, timely deflation and shrinkage to absorb impact energy and the like are considered, and the deployment posture of the air bag is also considered.
In particular, the top-mounted airbag needs to ensure that the airbag cannot be sprung to a protected object, i.e., an occupant, during inflation and deployment of the airbag, so as to avoid potential safety hazards.
FIG. 1 illustrates the airbag deployment attitude of a current overhead airbag; referring to fig. 1, the airbag of the conventional overhead airbag has a poor deployment posture, and the airbag 100 of the conventional overhead airbag is easily sprung against the face of the protected object 120 during inflation and deployment, resulting in potential safety hazards.
It should be noted that the information disclosed in the foregoing background section is only for enhancement of understanding of the background of the invention and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
In view of the above, the present invention provides an airbag folding method, an airbag and an overhead airbag, which can prevent the airbag of the overhead airbag from being bumped to a protected object during inflation and deployment by improving the airbag folding mode, so as to avoid potential safety hazards, and thus provide stable and reliable anti-collision protection.
According to one aspect of the present invention, there is provided a method of folding an airbag for an overhead airbag, the airbag of the overhead airbag having an inflation portion for connecting a gas generator and an extension portion extending from the inflation portion; the method for folding the air bag comprises the following steps: spreading the air bag to enable the stretching part to be paved and the inflating part to be overlapped on the back surface of the stretching part, wherein the back surface of the stretching part faces to a protected object in an inflating and unfolding state; and folding the two ends of the paved extension part back to the inflatable part in opposite directions until the two ends of the extension part are overlapped.
In some embodiments, the two ends of the extension include a first end and a second end; the two ends of the stretching part which are paved are opposite to the inflatable part and are turned over in opposite directions until the two ends of the stretching part are overlapped, and the stretching part comprises: folding the first end away from the inflatable portion and toward the second end; the second end is turned back to the inflatable part and towards the first end until the second end covers the first end.
In some embodiments, when the first end is turned back to the inflatable portion and toward the second end, the first end is turned a plurality of times by a first turning dimension to a position where the first end reaches the inflatable portion; and when the second end is turned back to the inflatable part and faces the first end, the second end is turned for a plurality of times according to a second turning size until the second end covers the first end.
In some embodiments, the first fold-over dimension and the second fold-over dimension each fit a width dimension of a shell of the overhead airbag.
In some embodiments, before the second end is turned back toward the inflatable portion and toward the first end, the method further comprises: and folding the two sides of the paved extension part back to the inflatable part in opposite directions, wherein the distance between the two sides of the extension part is adapted to the length dimension of the shell of the overhead airbag.
In some embodiments, each side of the stretch is folded at least twice, and the size of the first fold is smaller than the size of the subsequent fold.
In some embodiments, after the two ends to the extension overlap, further comprising: folding the part of the inflatable part exceeding the folded extension part to cover the folded extension part to form a folded air bag; and the folded air bag sleeve is sleeved into the air bag wrapping cloth.
In some embodiments, the extension is formed of a symmetrical airbag fabric, the extension being joined to the inflation seam; after the air bag is spread, the symmetrical parts of the symmetrical air bag cloth and the seam-extending parts of the extending parts and the inflating parts respectively form two ends of the extending parts which are paved.
In some embodiments, in the inflated deployed state, the front face of the extension abuts against a steering wheel.
According to yet another aspect of the present invention, there is provided an airbag for an overhead airbag, the airbag being folded by the airbag folding method according to any of the above-described embodiments.
According to still another aspect of the present invention, there is provided an overhead airbag comprising: the air bag of any of the embodiments above; and a gas generator connected to the inflating portion of the air bag.
In some embodiments, the overhead airbag further comprises: and the air bag is accommodated in the shell.
Compared with the prior art, the invention has the beneficial effects that at least:
according to the air bag folding scheme, the two ends of the extension part are turned back to the inflatable part and turned back to the opposite direction, so that the two ends of the extension part are turned back to the protected object in the inflation and unfolding process of the air bag, the two ends of the extension part are unfolded back to the turning path, the unfolding paths of the two ends are always positioned on the side of the air bag, which is opposite to the protected object, of the air bag, the end part can be effectively prevented from being flicked by the protected object, potential safety hazards are avoided, and stable and reliable anti-collision protection can be provided;
The two ends of the extension part are turned back to the inflatable part, so that the extension part can be more easily unfolded in an inflated state, and the air bag can be rapidly inflated and unfolded;
in addition, the airbag folding scheme of the invention ensures that the folded airbag has smaller size by folding the two ends of the extension part to be overlapped, thereby being convenient to be assembled into the shell of the overhead airbag.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is evident that the figures described below are only some embodiments of the invention, from which other figures can be obtained without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the airbag deployment attitude of a current overhead airbag;
FIG. 2 is a schematic illustration of an inflated deployment state of an overhead airbag in an embodiment of the present invention;
FIG. 3 is a schematic illustration of the steps of a method for folding an airbag according to an embodiment of the present invention;
FIG. 4 is a schematic side view of an air bag in a spread state in an embodiment of the present invention;
FIG. 5 is a schematic view of a symmetrical airbag fabric in an embodiment of the invention;
FIG. 6 is a schematic illustration of the airbag deployment configuration of an overhead airbag in an embodiment of the present invention;
FIG. 7 is a drawing showing an example of the spreading of an air bag in an embodiment of the present invention;
FIGS. 8-11 are exemplary diagrams of a folding process of a first end of an extension in an embodiment of the present invention;
FIGS. 12-14 are diagrams illustrating an exemplary folding process on both sides of an extension in an embodiment of the present invention;
FIGS. 15-17 are exemplary diagrams of folding the second end of the extension in accordance with embodiments of the present invention;
FIG. 18 is an exemplary view of a folded extension being moved in an embodiment of the present invention;
FIG. 19 is a diagram showing an example of folding of the inflatable portion in the embodiment of the present invention;
FIG. 20 is an exemplary illustration of an overhead airbag in an embodiment of the invention;
FIG. 21 is a cross-sectional view A-A' of FIG. 20.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
The drawings are merely schematic illustrations of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the flow shown in the drawings is merely illustrative and not necessarily all steps are included. For example, some steps may be decomposed, some steps may be combined or partially combined, and the order of actual execution may be changed according to actual situations. The use of the terms "first," "second," and the like in the description herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. It should be noted that, without conflict, the embodiments of the present invention and features in different embodiments may be combined with each other.
The airbag folding scheme of the invention is used for an overhead airbag, and the overhead airbag can comprise an overhead airbag on the driving side and an overhead airbag on the assistant driving side.
FIG. 2 shows an inflated and deployed state of an overhead airbag in an embodiment of the present invention, and FIG. 3 shows the main steps of an airbag folding method in an embodiment of the present invention; as shown in conjunction with fig. 2 and 3, the airbag 210 of the overhead airbag 200 has an inflating portion 230 for connecting with the inflator 220 and an extending portion 240 extending from the inflating portion 230; the air bag folding method comprises the following steps:
In step S310, the airbag 210 is deployed such that the extension portion 240 is laid out and the inflation portion 230 is superposed on the rear surface 240b of the extension portion 240, and the rear surface 240b of the extension portion 240 faces the object to be protected in the inflated and deployed state.
FIG. 4 shows a side view of an air bag in a spread state in an embodiment of the invention; referring to fig. 4, the extension 240 is shown in solid lines and the inflation 230 is shown in phantom lines. After the airbag 210 is spread, the extension 240 is in a flattened state, and the inflation portion 230 is overlapped on the rear surface 240b of the extension 240.
In step S320, the two ends of the spread portion 240 are folded back toward the inflatable portion 230 until the two ends of the spread portion 240 overlap.
When the extension portion 240 is folded in combination with the two folding arrows shown in fig. 4, the two ends 241 and 242 of the extension portion 240 are folded away from the inflatable portion 230 and toward each other.
In the above-described airbag folding method, the two ends 241 and 242 of the extension portion 240 are folded back toward the inflatable portion 230, so that the two ends 241 and 242 of the extension portion 240 are folded back toward the object to be protected; therefore, in the inflation and deployment process of the air bag 210, the two ends 241 and 242 of the extension part 240 are reversely unfolded along the folding path, and the unfolding paths of the two ends 241 and 242 are always positioned on the surface of the air bag facing away from the protected object, so that the end part can be effectively prevented from being flicked to the protected object, particularly the face of the protected object, so that potential safety hazards are avoided, and stable and reliable anti-collision protection can be provided;
Folding the ends 241 and 242 of the extension 240 away from the inflatable portion 230 also allows the extension 240 to be more easily deployed in an inflated condition so that the airbag 210 can be inflated and deployed rapidly;
In addition, the above-described airbag folding method allows the folded airbag 210 to have a small size by folding the both ends 241 and 242 of the extension 240 to overlap, thereby facilitating assembly into the case of the overhead airbag 200.
In one embodiment, the two ends 241 and 242 of the extension 240 are defined as a first end 241 and a second end 242; thus, folding the ends 241 and 242 of the flattened extension 240 away from the plenum 230 and toward each other until the ends 241 and 242 of the extension 240 overlap, comprises: folding the first end 241 away from the plenum 230 and toward the second end 242; the second end 242 is folded back toward the plenum 230 and toward the first end 241 such that the second end 242 covers the first end 241.
When the first end 241 is turned back to the inflatable portion 230 and turned toward the second end 242, the first end 241 is turned over multiple times according to the first turning-over dimension until the first end 241 reaches the inflatable portion 230; when the second end 242 is folded back toward the inflatable portion 230 and toward the first end 241, the second end 242 is folded a plurality of times in a second folded-back dimension until the second end 242 covers the first end 241.
Specific numerical values of the first folding size and the second folding size can be set according to requirements; the first fold-over dimension and the second fold-over dimension may be equal or different. In one embodiment, the first fold-over dimension and the second fold-over dimension each fit the width dimension of the shell of the overhead airbag 200; thus, the width dimension of the folded airbag 210 can be adapted to the width dimension of the case of the top-mounted airbag 200.
In operation, the first end 241 and the second end 242 of the extension 240 may be folded using a folding ruler to enable the first end 241 and the second end 242 to be precisely and conveniently folded in the desired dimensions. Specifically, when the first end 241 is folded, the first end 241 may be folded back toward the inflatable portion 230 and toward the second end 242 using a first folding ruler having a width dimension equal to the first folding dimension; when the second end 242 is folded, a second folding rule having a width dimension equal to the second folding dimension may be used to fold the second end 242 away from the inflatable portion 230 and toward the first end 241.
In one embodiment, after the first end 241 is folded, and before the second end 242 is folded, the method further comprises: the two sides of the paved extension 240 are turned back toward the inflation 230 and are turned toward each other, and the distance between the two sides of the extension 240 is adapted to the length dimension of the housing of the top-mounted airbag 200.
By turning the two sides of the extension part 240 back to the inflatable part 230 and turning the two sides of the extension part 240 back to the protected object, the extension part 240 is inflated and unfolded along the turning direction during inflation and unfolding of the air bag 210, so that the protected object can be effectively prevented from being flicked by the side part, potential safety hazard can be avoided, and stable and reliable anti-collision protection can be provided; further, by folding both sides of the extension 240 to the length dimension of the case of the distance-fitting overhead airbag 200, the folded airbag 210 can be smoothly fitted into the case of the overhead airbag 200.
In one embodiment, each side of the extension 240 is folded at least twice, and the size of the first fold is smaller than the size of the subsequent folds. By folding each side of the extension 240 a smaller dimension for the first time and a larger dimension for the subsequent time, it is possible to avoid the both side edges of the extension 240 from being caught in the case of the overhead airbag 200 in the inflated state, thereby enabling the airbag 210 to be smoothly deployed.
In one embodiment, after the extension 240 is folded, it further comprises: folding the portion of the inflated portion 230 beyond the folded extension 240 to cover the folded extension 240 to form the folded airbag 210; and sleeving the folded air bag 210 into the air bag wrapping cloth to form the fully folded air bag 210.
Further, in the above embodiments, the extension portion 240 is formed of symmetrical airbag cloth, and the extension portion 240 is in seam-stretching connection with the inflation portion 230; after the airbag 210 is deployed, the symmetrical portions of the symmetrical airbag cloth, and the slit portions of the extension portion 240 and the inflation portion 230 form both ends 241 and 242 of the flattened extension portion 240, respectively.
The symmetrical airbag cloth can be a piece of airbag cloth or can be formed by a plurality of airbag cloth seams. FIG. 5 shows a symmetrical airbag fabric configuration in an embodiment of the invention, FIG. 5 showing a particular piece of airbag fabric; as shown in connection with fig. 5 and 4, after the airbag 210 is deployed, the symmetrical portion 510 of the symmetrical airbag cloth forms a first end 241 of the flattened extension 240, and the extension 240 forms a second end 242 of the flattened extension 240 with the seam-derived portion 520 of the inflatable portion 230.
FIG. 6 illustrates an airbag deployment configuration of an overhead airbag in an embodiment of the invention; referring to fig. 6 and 2, in the embodiment of the present invention, the airbag 210 of the overhead airbag 200 folded by the airbag folding method is in the inflated and deployed state, the back 240b of the extension 240 faces but does not bounce against the protected object 120, and the front 240a of the extension 240 stably abuts against the steering wheel 150, thereby providing reliable anti-collision protection for the protected object 120.
However, the present overhead airbag, as shown in fig. 1, has a poor airbag deployment posture, which results in that the present overhead airbag 100 is easy to strike the face of the protected object 120 during inflation and deployment, and the present overhead airbag 100 cannot stably abut against the steering wheel 150 during inflation and deployment, which results in failure to provide reliable anti-collision protection.
The embodiment of the invention also provides an air bag for an overhead type air bag, which is formed by folding the air bag by the method for folding the air bag, wherein the two ends and the two sides of the extension part are opposite to the inflatable part and are turned over in opposite directions, so that the two ends and the two sides of the extension part are respectively turned over in opposite directions and are opposite to the protected object, and therefore, in the inflation and unfolding process of the air bag, the two ends and the two sides of the extension part are respectively unfolded in opposite directions along the turning over paths, and the unfolding paths of the two ends and the two sides are always positioned on one surface of the air bag opposite to the protected object, the end part and the side part can be effectively prevented from being flicked to the protected object, so that potential safety hazards are avoided, and stable and reliable anti-collision protection can be provided; in addition, the airbag folded by the airbag folding method described in any of the above embodiments also has a size adapted to the housing of the overhead airbag, so that it can be smoothly fitted into the housing of the overhead airbag.
The embodiment of the invention also provides an overhead airbag, which comprises the airbag described in any embodiment; and a gas generator connected to the inflating portion of the air bag. The overhead airbag provided by the embodiment of the invention is folded by adopting the airbag folding method described in any embodiment, and has a good airbag unfolding posture; in the inflated and expanded state, the expansion part of the air bag can be smoothly expanded to the steering wheel, the front surface of the expansion part stably clings to the steering wheel, and the back surface faces towards but cannot bounce against the protected object, so that reliable anti-collision protection is provided for the protected object.
In one embodiment, the overhead airbag further comprises a housing for receiving the folded airbag; the airbag folded by the airbag folding method described in any of the above embodiments has a size that fits the housing of the overhead airbag so as to be smoothly fitted into the housing.
The airbag folding process of the overhead airbag will be described with reference to specific exemplary drawings. The features and principles of the airbag folding method described in any of the above embodiments are applicable to the following specific examples. In the following specific examples, the features and principles of the airbag folding method that have been explained in the above embodiments will not be repeated.
FIG. 7 shows the spread of the air bag in a specific example; referring to fig. 7, the airbag 210 is first deployed such that the extension portion 240 is laid out and the inflation portion 230 is superposed on the rear surface of the extension portion 240, the rear surface of the extension portion 240 being oriented toward the object to be protected in the inflated and deployed state.
8-11 Illustrate a folding process of a first end of the extension in a particular example; referring to fig. 8 to 11, after the airbag 210 is spread, the first end 241 of the extension portion 240 is folded, and the first end 241 may be folded back toward the inflatable portion 230 and toward the second end 242 a plurality of times using the first folding ruler 610 until the first end 241 reaches the inflatable portion 230. In fig. 8 to 11, fig. 8 shows a state in which the first folding ruler 610 is aligned with the end edge of the first end 241, fig. 9 shows a state in which the first end 241 is folded twice, and fig. 10 shows a state in which the first end 241 is folded four times; thus, the first end 241 is folded, and the first folding ruler 610 is pulled out, so that the state shown in fig. 11 is presented.
In this example, the width dimension w 1 of the first folding ruler 610 is 70mm. In other examples, the width dimension of the first folding ruler 610 and the number of folds of the first end 241 can be adjusted as needed, as long as the dimension of the folded airbag 210 is ensured to be able to adapt to the dimension of the housing of the overhead airbag.
FIGS. 12-14 illustrate the folding process on both sides of the extension in a specific example; as shown in connection with fig. 12-14, after the first end of the extension portion 240 is folded, the two sides 243 and 244 of the extension portion 240 are continuously folded, and a suitable folding rule (not specifically shown in the drawings) may be used to fold the two sides 243 and 244 of the extension portion 240 back toward the inflatable portion 230 and toward each other, so that 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 top-mounted airbag. In fig. 12 to 14, fig. 12 shows a state in which one side 243 of the extension 240 is folded for the first time, and the folded dimension H 1 is 70mm; fig. 13 shows a state in which the side 243 of the extension 240 is folded for the second time, the folded dimension H 2 being 140mm; fig. 14 shows a state in which the other side 244 of the extension 240 is folded twice.
In this example, after the two sides 243 and 244 of the extension 240 are folded twice, respectively, the distance H 3 between the two sides 243 and 244 is 280mm. In other examples, the fold size, number of folds, etc. of both sides 243 and 244 may be adjusted as desired, so long as it is ensured that the size of the folded airbag 210 can be adapted to the size of the shell of the overhead airbag.
15-17 Illustrate a folding process of the second end of the extension in a particular example; as shown in fig. 15 to 17, after the two sides of the extension portion 240 are folded, the second end 242 of the extension portion 240 is folded, and the second end 242 may be folded back toward the inflatable portion 230 and toward the first end 241 a plurality of times by using the second folding rule 620, so that the second end 242 covers the first end 241. In fig. 15 to 17, fig. 15 shows a state in which the second folding ruler 620 is aligned with the end edge of the second end 242, and fig. 16 shows a state in which the second end 242 is folded four times; thus far, the second end 242 is folded, and the second folding ruler 620 is pulled out, so that the state shown in fig. 17 is presented.
In this example, the width dimension w 2 of the second folding ruler 620 is 70mm. In other examples, the width of the second folding ruler 620, the number of folds of the second end 242, etc. may be adjusted as desired, and are not limited to this example.
FIG. 18 illustrates an example of movement of a folded extension in a specific example; referring to fig. 18, after the extension 240 is folded, the folded extension 240 may be moved to align with the inflation port 230' of the inflation portion 230 for subsequent assembly of the folded airbag 210 into the top airbag housing.
FIG. 19 shows a folded state of the inflatable portion in a specific example; as shown in fig. 18 and 19, after the extension 240 is folded and adjusted, the portion of the inflatable portion 230 beyond the folded and adjusted extension 240 is folded over to cover the folded and adjusted extension 240 to form the folded airbag 210. Subsequently, the folded air bag 210 is sleeved into the air bag wrapping cloth, and the air bag 210 with complete folding is formed.
In this example, the folded airbag 210 has a width dimension of 125mm, a length dimension of 280mm, and a thickness dimension (not specifically shown) of 25mm, and is capable of adapting to the shell dimensions of the overhead airbag.
FIG. 20 illustrates an example of an overhead airbag in a specific example; as shown in fig. 19 and 20, after the airbag 210 is folded completely, the folded airbag 210 is assembled into a case (not specifically shown) of the overhead airbag 200, and a gas generator 220 is connected to an inflation port 230' of an inflation portion 230, that is, the overhead airbag 200 is formed.
FIG. 21 shows a cross-sectional structure taken along section line A-A' of FIG. 20; as shown in fig. 20 and 21, and fig. 2 and 6, in the overhead airbag 200, the inflator 220 is connected to the inflation port 230' of the inflation portion 230, and the first end 241 and the second end 242 (both sides of the extension portion 240 are not shown in the cross-sectional view) of the extension portion 240 extending from the inflation portion 230 are respectively turned back to the inflation portion 230 and turned back to back for a plurality of turns; in the inflated and expanded state, the first end 241 and the second end 242 of the extension portion 240 are expanded back to the folded path, and the expanded paths of the first end 241 and the second end 242 are always located on the side of the air bag 210 facing away from the protected object 120, so that the protected object 120 can be prevented from being flicked to avoid potential safety hazards; the unfolding process of both sides of the stretching part 240 is the same as that of both ends 241 and 242, and the description will not be repeated; in addition, the front face 240a of the inflated and deployed extension 240 stably abuts against the steering wheel 150, and reliable crash protection can be provided.
In summary, according to the airbag folding scheme, the two ends and the two sides of the extension part are respectively turned back to the protected object and turned back to each other, so that the two ends and the two sides of the extension part are respectively turned back to the folded paths in the inflation and unfolding process of the airbag, the unfolding paths of the two ends and the two sides are always positioned on one surface of the airbag, which is opposite to the protected object, of the airbag, the end part and the side part can be effectively prevented from being flicked to the protected object, potential safety hazards are avoided, and stable and reliable anti-collision protection can be provided;
The two ends and two sides of the extension part are turned back to the inflatable part, so that the extension part can be more easily unfolded in an inflated state, and the air bag can be rapidly inflated and unfolded;
The air bag folded by adopting the air bag folding scheme of the invention also has the size of the shell of the top-mounted air bag, so that the air bag can be smoothly assembled into the shell of the top-mounted air bag;
In addition, the air bag folded by adopting the air bag folding scheme has a good air bag unfolding posture; under the inflation and deployment state, the extension part of the air bag of the overhead type air bag can be smoothly deployed on the steering wheel, the front surface of the extension part is stably attached to the steering wheel, the back surface of the extension part faces towards but cannot bounce the protected object, and reliable anti-collision protection is provided for the protected object.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (12)
1. An airbag folding method for an overhead airbag is characterized in that,
The airbag of the overhead airbag has an inflation portion for connecting a gas generator and an extension portion extending from the inflation portion;
the method for folding the air bag comprises the following steps:
Spreading the air bag to enable the stretching part to be paved and the inflating part to be overlapped on the back surface of the stretching part, wherein the back surface of the stretching part faces to a protected object in an inflating and unfolding state;
and folding the two ends of the paved extension part back to the inflatable part in opposite directions until the two ends of the extension part are overlapped.
2. The method of folding an airbag of claim 1, wherein the two ends of the extension include a first end and a second end;
The two ends of the stretching part which are paved are opposite to the inflatable part and are turned over in opposite directions until the two ends of the stretching part are overlapped, and the stretching part comprises:
folding the first end away from the inflatable portion and toward the second end;
The second end is turned back to the inflatable part and towards the first end until the second end covers the first end.
3. The method of folding an airbag of claim 2, wherein said first end is folded a plurality of times in a first fold-over dimension to a position where said first end reaches said inflatable portion when said first end is folded away from said inflatable portion and toward said second end;
and when the second end is turned back to the inflatable part and faces the first end, the second end is turned for a plurality of times according to a second turning size until the second end covers the first end.
4. A method of folding an airbag according to claim 3 wherein the first fold-over dimension and the second fold-over dimension each fit the width dimension of the shell of the overhead airbag.
5. The method of folding an airbag of claim 2, wherein before said folding said second end away from said inflatable portion and toward said first end, further comprising:
And folding the two sides of the paved extension part back to the inflatable part in opposite directions, wherein the distance between the two sides of the extension part is adapted to the length dimension of the shell of the overhead airbag.
6. The method of folding an airbag of claim 5 wherein each side of the extension is folded at least twice and the first fold is smaller in size than the subsequent folds.
7. The method of folding an airbag according to claim 1, wherein after the two ends to the extension portion overlap, further comprising:
Folding the part of the inflatable part exceeding the folded extension part to cover the folded extension part to form a folded air bag; and
And sleeving the folded air bag into an air bag wrapping cloth.
8. The method of folding an airbag of claim 1, wherein said extension is formed of a symmetrical airbag fabric, said extension being joined to said inflation portion seam;
After the air bag is spread, the symmetrical parts of the symmetrical air bag cloth and the seam-extending parts of the extending parts and the inflating parts respectively form two ends of the extending parts which are paved.
9. A method of folding an airbag according to any one of claims 1 to 8, wherein in the inflated and deployed state the front face of the extension abuts against the steering wheel.
10. An airbag for an overhead airbag, wherein the airbag is folded by the airbag folding method of any one of claims 1 to 9.
11. An overhead airbag, comprising:
the air bag of claim 10; and
And the gas generator is connected with the inflating part of the air bag.
12. The overhead airbag of claim 11, further comprising:
And the air bag is accommodated in the shell.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211335369.9A CN117984937A (en) | 2022-10-28 | 2022-10-28 | Airbag folding method, airbag and overhead airbag |
| PCT/CN2023/127286 WO2024088406A1 (en) | 2022-10-28 | 2023-10-27 | Air bag folding method, air bag, and overhead airbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211335369.9A CN117984937A (en) | 2022-10-28 | 2022-10-28 | Airbag folding method, airbag and overhead airbag |
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| Publication Number | Publication Date |
|---|---|
| CN117984937A true CN117984937A (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211335369.9A Pending CN117984937A (en) | 2022-10-28 | 2022-10-28 | Airbag folding method, airbag and overhead airbag |
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| Country | Link |
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| CN (1) | CN117984937A (en) |
| WO (1) | WO2024088406A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8678430B2 (en) * | 2011-06-24 | 2014-03-25 | Takata Corporation | Airbag device and airbag folding method |
| CN103359044A (en) * | 2012-04-05 | 2013-10-23 | 奥托立夫开发公司 | Automobile safety air bag and folding method thereof and pushing device |
| KR101936859B1 (en) * | 2012-07-27 | 2019-01-09 | 현대모비스 주식회사 | Method for folding the air-bag cushion |
| CN208101907U (en) * | 2018-03-22 | 2018-11-16 | 延锋百利得（上海）汽车安全***有限公司 | A kind of ceiling mounted frontal protection air bag device |
| CN113752977B (en) * | 2020-06-03 | 2023-03-24 | 宁波均胜汽车安全***有限公司 | Method for folding an airbag and airbag arrangement |
-
2022
- 2022-10-28 CN CN202211335369.9A patent/CN117984937A/en active Pending
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2023
- 2023-10-27 WO PCT/CN2023/127286 patent/WO2024088406A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2024088406A1 (en) | 2024-05-02 |
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