CN218287669U - Vehicle and safety airbag thereof - Google Patents

Abstract

The utility model relates to a vehicle and air bag thereof. In the process of frontal collision of the vehicle, the impact force applied to the passengers is different, and the forward movement distance is also different. The airbag also has a different impact force applied to a folded portion formed by folding a part of the airbag wall of the airbag main body to form a plurality of layers stacked one on another. The multi-layer folded parts are sewn through the sewing threads, the sewing threads are different in breaking condition according to different impact forces, the breaking positions of the sewing threads are more when the impact force is large, the number of unfolded layers of the folded parts is more, the number of released airbag walls of the airbag body is more, and the buffer space provided for passengers is large; if the impact force is small, the fracture position of the sewing line is relatively small, the number of the unfolded layers of the folded part is small, the released airbag body has fewer bag walls, and a small buffer space is provided for passengers. The safety airbag can unfold different layers of the folded parts according to the impact force of the passenger impacting the airbag body, and further provides different buffer spaces for the passengers under different impact forces.

Description

Vehicle and safety airbag thereof

Technical Field

The utility model relates to a safety device technical field especially relates to vehicle and air bag thereof.

Background

When the automobile is in collision, the safety air bag provides effective anti-collision protection for passengers. In a frontal collision of a vehicle, that is, a collision in a forward direction of a vehicle body, a conventional frontal restraint system includes a seat belt and an airbag, which together protect a torso, a head, and a neck of an occupant in the frontal collision. When collision happens, a passenger moves forwards to impact the safety airbag, and the traditional safety airbag cannot meet the requirement of safety diversity and cannot provide safety protection for different requirements of the passenger due to different positions of the passenger, different weights of the passenger and different impact forces received by the passenger.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a vehicle and an airbag thereof that can satisfy diverse safety requirements in view of the above problems.

An air bag of a vehicle, the air bag comprises an air bag body, a plurality of layers of folded parts which are mutually overlapped and arranged are formed on part of a bag wall of the air bag body in a folded mode, the overlapped arrangement direction of the plurality of layers of folded parts is the advancing direction of a vehicle body, the plurality of layers of folded parts are sewn through sewing threads, and the sewing threads can be broken under stress.

In one embodiment, the airbag is a roof-mounted airbag, and the wrinkle portion is formed at a top position of the airbag body.

In one embodiment, the vehicle airbag further comprises an air inlet bag body, an air inlet channel is formed in the air inlet bag body, the airbag body is connected to the air inlet bag body, a communication port is formed at the joint of the airbag body and the air inlet bag body, and the communication port is communicated with the air inlet channel and the space in the airbag body; the wrinkle portion is formed at a position of the airbag body near the communication port.

In one embodiment, the distance between the corrugated part and the communication port is 5mm-20mm.

In one embodiment, a length of a bag wall of the airbag body forming the wrinkle portion in the vehicle body advancing direction is greater than or equal to 120mm.

In one embodiment, a plurality of sewing threads are arranged at intervals along the length direction of the crease of the folded part, and two adjacent layers of the folded parts are sewn through at least one sewing thread.

In one embodiment, the number of layers of the folded parts sewn by at least two sewing lines arranged along the length direction of the crease is different.

In one embodiment, a plurality of sewing threads are arranged at intervals along the direction from one fold to the other adjacent fold, and the two adjacent layers of the folded parts are sewn through at least one sewing thread.

In one embodiment, the number of layers of the folded parts sewn by at least two sewing threads arranged along the direction from one folding line to the other adjacent folding line is different.

A vehicle comprising a vehicle body and an airbag as described above, the airbag body being foldable to the roof of the vehicle body.

According to the vehicle and the safety airbag thereof, in the process of frontal collision of the vehicle, under the condition that a passenger wears a safety belt, the upper body of the passenger moves forwards, and the head of the passenger can impact on the airbag body of the safety airbag. Due to the fact that collision energy is different, positions of passengers are different, weights of the passengers are different and the like, impact force applied to the passengers is different, and forward movement distances are different. The airbag also has a different impact force applied to a folded portion formed by folding a part of the bag wall of the airbag main body so as to have a plurality of layers stacked one on another. Because the multi-layer folded parts are sewn through the sewing threads, the sewing threads are different in breaking condition according to different impact forces, the breaking positions of the sewing threads are more when the impact force is large, the number of layers of unfolded folded parts is more, the bag wall of the released airbag body is more, and further, the buffer space provided for passengers is large; if the impact force applied to the airbag body is small, the fracture position of the sewing line is relatively small, the number of layers of unfolded folded parts is small, the released airbag wall of the airbag body is small, and therefore a small buffering space is provided for passengers. The safety airbag can unfold the fold parts with different layers according to the impact force of the passenger impacting the airbag body, so that different buffer spaces are provided for the passengers under different impact forces, and the safety requirement of protecting the passengers under different conditions can be met.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Furthermore, the drawings are not to scale as 1:1, and the relative sizes of the various elements are drawn in the drawings by way of example only and not necessarily to true scale. In the drawings:

FIG. 1 is a schematic view of an airbag according to an embodiment;

FIG. 2 is a side view of the corrugated portion of FIG. 1;

FIG. 3 is a top view of the corrugated portion of FIG. 2 in one embodiment;

fig. 4 is a top view of the corrugated portion shown in fig. 2 in another embodiment.

Description of reference numerals:

10. an air bag; 100. an airbag body; 110. a wrinkle part; 120. a suture; 130. a communication port; 200. an air inlet bladder; 210. an air intake passage; 300. a gas generator.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

Referring to fig. 1 and 2, the vehicle according to an embodiment of the present invention includes a vehicle body and an airbag 10, where the airbag 10 is disposed on the vehicle body and pops up after the vehicle body is impacted, so as to protect the safety of the passenger.

In the present embodiment, the airbag 10 is disposed at the top of the vehicle body, and the airbag 10 is a roof-mounted airbag 10. The airbag 10 protects the occupant from the front when the vehicle body is in a frontal collision.

Specifically, the airbag 10 includes an airbag body 100, a plurality of folded portions 110 are formed by folding a part of a wall of the airbag body 100, the folded portions 110 are arranged in a stacked manner, the direction in which the folded portions 110 are arranged in a stacked manner is a vehicle body advancing direction a, the folded portions 110 are sewn by a sewing thread 120, and the sewing thread 120 is breakable by a force.

In the case of a frontal collision of a vehicle, when a seat belt is worn by a passenger, the upper body of the passenger moves forward and the head of the passenger collides against the airbag body 100 of the airbag. Due to the fact that collision energy is different, positions of passengers are different, weights of the passengers are different and the like, impact force on the passengers is different, and forward movement distances are different. The airbag body 100 is different in the impact force applied to the folded portion 110 formed by folding a plurality of layers of the airbag walls. Because the multi-layer folded part 110 is sewn through the sewing thread 120, the sewing thread 120 has different breaking situations according to different impact forces, the number of the broken positions of the sewing thread 120 is large when the impact force is large, the number of the layers of the unfolded folded part 110 is large, the number of the released airbag walls of the airbag body 100 is large, and further, the buffer space provided for passengers is large; if the airbag body 100 is subjected to a small impact force, the breaking position of the sewing thread 120 is relatively small, the number of layers of the folded portion 110 to be deployed is small, the released wall of the airbag body 100 is small, and a small cushion space is provided for the occupant. The airbag 10 can deploy the folded parts 110 with different layers according to the impact force of the passenger on the airbag body 100, so as to provide different buffer spaces for the passenger under different impact forces, and meet the safety requirements of protecting the passenger under different conditions.

If the airbag body 100 is not provided with the plurality of layers of the folded portions 110 stacked one on another, when the passengers receive impact forces of different sizes, the size of the airbag body 100 is unchanged, and further the buffering space of the passengers passing through the airbag body 100 is consistent under different conditions, so that when the passengers receive large impact force, the buffering space brought by the airbag body 100 is insufficient, and further the injury risk of the passengers is increased.

In the present embodiment, the airbag 10 is a roof-type airbag 10, and the wrinkle portion 110 is formed at a top position of the airbag body 100.

In the frontal collision process of the vehicle, when a passenger wears a safety belt, the upper body of the passenger moves forwards, the head of the passenger is supported by the airbag body 100, and the head of the passenger is not the same in impact energy and the forward movement distance of the head of the passenger is not the same in different situations. Furthermore, the folded part 110 is formed at the top part of the airbag body 100, so that the folded part 110 at the top part of the airbag body 100 has different layers of unfolded layers under different impact conditions, the distance that the head of an occupant needs to move forwards under different conditions is adapted, and the head is enabled to obtain enough forward moving space and safety protection.

In other embodiments, the airbag 10 may be disposed at other positions of the vehicle body, and the stacking direction of the folded portion 110 is set according to the direction of the impact force received, so as to ensure different deployment degrees during the impact process, and adapt to the impact force under different conditions.

In one embodiment, the airbag 10 further includes an air inlet bag body 200, an air inlet channel 210 is formed in the air inlet bag body 200, the airbag body 100 is connected to the air inlet bag body 200, a communication port 130 is formed at a connection position of the airbag body 100 and the air inlet bag body 200, and the communication port 130 is communicated with the air inlet channel 210 and a space in the airbag body 100; the wrinkle portion 110 is formed at a position of the airbag body 100 near the communication port 130. When the vehicle body is impacted, the airbag 10 is ejected, and the air is inflated into the space inside the airbag body 100 through the air inlet passage 210 of the air inlet bag body 200 through the communication port 130, so that the cushion protection effect of the airbag body 100 is realized. Since the occupant mainly impacts on the side of the airbag body 100 facing away from the intake airbag 200, the formation of the folded portion 110 at the position of the airbag body 100 close to the communication port 130 prevents the occupant from directly impacting on the folded portion 110, which on one hand prevents the folded portion 110 from being unfolded and on the other hand prevents the folded portion 110 from influencing the protection of the occupant during the unfolding process.

Specifically, the airbag 10 further includes a gas generator 300, the gas inlet bladder 200 being connected to the gas generator 300, the gas generator 300 being for inflating the airbag body 100 through the gas inlet passage 210. The airbag 10 can be inflated by the inflator 300 after the airbag 10 is ejected. In the present embodiment, the gas generator 300 is provided on the ceiling wall of the vehicle body.

In one embodiment, the distance between the corrugated portion 110 and the communication opening 130 is 5mm-20mm. The impact force direction received by the folded part 110, and thus the force receiving direction of the sewing thread 120, is prevented from being influenced by the excessive distance between the folded part 110 and the communication port 130, and the passenger is prevented from directly impacting the position of the folded part 110 when impacting the airbag body 100. In the present embodiment, the distance between the corrugated portion 110 and the communication port 130 is 10mm. In other embodiments, the spacing between the corrugated portion 110 and the communication port 130 may also be 5mm, 8mm, 10mm, 12mm, 15mm, 18mm, 20mm, etc.

In one embodiment, the length of the bag wall of the airbag body 100 forming the wrinkle portion 110 in the vehicle body advancing direction is greater than or equal to 120mm. It is understood that the length of the wrinkle part 110 in the vehicle body advancing direction after being unfolded is greater than or equal to 120mm. It is also understood that the length of the bag wall of the airbag body 100 in the vehicle body advancing direction may be increased by 120mm or more when all the wrinkle portions 110 are deployed. The fold part 110 is formed by folding the wall of the airbag body 100 with the length of more than or equal to 120mm, so that the wall of the airbag body 100 is increased by at least 120mm when the airbag body 100 is impacted, and the buffer distance can be increased by at least 0-120mm according to different conditions.

In one embodiment, the number of layers of the corrugated portion 110 is greater than or equal to 2. The greater the number of the folds 110, the greater the impact energy that the folds 110 can receive, and the number of the folds 110 and the length of the bag wall of the airbag body 100 forming the folds 110 may be set as needed.

For example, when the length of the bag wall forming the folded part 110 of the airbag main body 100 is short, the number of layers of the folded part 110 can be appropriately reduced; when the length of the bag wall of the airbag body 100 forming the folded portion 110 is long, the number of layers of the folded portion 110 can be appropriately reduced.

Referring to fig. 3 and 4, in an embodiment, a plurality of sewing threads 120 are arranged at intervals along a length direction L of a fold of the folded portion 110, and two adjacent layers of the folded portion 110 are sewn by at least one sewing thread 120. By providing a plurality of sewing threads 120 in the longitudinal direction L of the fold, the stability of connection of the respective folded portions 110 can be ensured, and the ability to withstand impact energy can be improved.

Specifically, the number of layers of the wrinkle part 110 sewn by at least two sewing threads 120 provided along the longitudinal direction L of the fold is different. Due to the fact that the number of layers of the folded parts 110 sewn by the sewing threads 120 is different, after the folded parts 110 are subjected to impact energy, the folded parts 110 sewn by the few sewing threads 120 are unfolded firstly, the impact energy is increased, the folded parts 110 sewn by the corresponding many sewing threads 120 are unfolded further, and the situation that the folded parts 110 are unfolded completely or not unfolded completely under the condition of one impact energy is avoided.

As shown in fig. 3, after the impact is applied, the wrinkle part 110 at the lowermost layer is sewn with only two sewing threads 120 and is unfolded first, and the wrinkle part 110 at the uppermost layer is sewn with 10 sewing threads 120 and is unfolded last.

Similarly, as shown in fig. 4, after the impact, the wrinkle part 110 at the lowest layer is sewn with only four sewing threads 120 and is unfolded first, and the wrinkle part 110 at the uppermost layer is sewn with 12 sewing threads 120 and is unfolded last.

Referring to fig. 1, in other embodiments, the middle folded part 110 may be sewn by more sewing threads 120, and the two end folded parts 110 may be sewn by less sewing threads 120. Alternatively, the wrinkle portion 110 located close to the communication port 130 may be sewn with a large number of sewing threads 120, and the wrinkle portion 110 located far from the communication port 130 may be sewn with a small number of sewing threads 120. Or the folded part 110 located close to the communication port 130 is sewn by fewer sewing threads 120, and the folded part 110 located far from the communication port 130 is sewn by more sewing threads 120.

Referring to fig. 1 and 2, a plurality of spaced sewing threads 120 are arranged along a direction in which one of the folds faces another adjacent fold, and two adjacent layers of the folded portions 110 are sewn through at least one sewing thread 120. In the present embodiment, a direction along one fold toward another adjacent fold is defined as a width direction b, i.e., a plurality of sewing threads 120 are also provided along the width direction b. The plurality of sewing threads 120 in the width direction b can further ensure the stability of the connection of the wrinkle part 110, and ensure that the wrinkle part 110 can be gradually unfolded when an impact is applied. And the plurality of sewing threads 120 can improve the ability of the wrinkle part 110 to withstand impact energy.

Specifically, the number of layers of the folded part 110 sewn by at least two sewing threads 120 arranged in a direction from one fold toward the other adjacent fold is different. That is, the number of layers of the wrinkle part 110 to which at least two sewing threads 120 are sewn is different along the width direction b. Due to the fact that the number of layers of the folded parts 110 sewn by the sewing threads 120 is different, after the folded parts 110 are subjected to impact energy, the folded parts 110 are unfolded from the positions where the few sewing threads 120 are sewn, the impact energy is increased, the unfolding degree of the folded parts 110 is gradually increased, and the situation that the folded parts 110 are completely unfolded at one time under the condition of one impact energy is avoided.

As shown in fig. 2, after an impact, the right-most pleat 110 is unfolded first, and the left-most pleat 110 is unfolded last.

In other embodiments, the number of layers of the wrinkled portions 110 sewn by the plurality of sewing threads 120 arranged along the longitudinal direction L of the folds of the wrinkled portions 110 may be uniform, while the number of layers of the wrinkled portions 110 sewn by the plurality of sewing threads 120 arranged along the width direction b may be non-uniform. Alternatively, the number of layers of the folded part 110 sewn by the plurality of sewing threads 120 provided along the longitudinal direction L of the fold of the folded part 110 is not uniform, and the number of layers of the folded part 110 sewn by the plurality of sewing threads 120 provided along the width direction b is uniform.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. An airbag for a vehicle, characterized in that the airbag comprises an airbag body, a plurality of folded parts which are mutually overlapped and are formed by folding part of a bag wall of the airbag body, the overlapping direction of the plurality of folded parts is a vehicle body advancing direction, the plurality of folded parts are sewed through a sewing thread, and the sewing thread can be broken under stress.

2. An airbag for a vehicle according to claim 1, wherein the airbag is a roof-mounted airbag, and the wrinkle portion is formed at a top position of the airbag body.

3. The vehicle airbag according to claim 2, further comprising an air intake bag body, wherein an air intake passage is formed in the air intake bag body, the airbag body is connected to the air intake bag body, and a communication port is formed at a connection point of the airbag body and the air intake bag body, and the communication port communicates the air intake passage with an inner space of the airbag body; the wrinkle portion is formed at a position of the airbag body near the communication port.

4. An airbag for a vehicle according to claim 3, wherein a distance between the wrinkle portion and the communication port is 5mm to 20mm.

5. An airbag for a vehicle according to any one of claims 1 to 4, wherein a length of a bag wall of the airbag body that forms the folded portion in the vehicle body advancing direction is greater than or equal to 120mm.

6. An airbag according to any one of claims 1 to 4, wherein a plurality of the sewing threads are provided at intervals along the length direction of the fold of the folded portion, and adjacent two layers of the folded portion are sewn by at least one of the sewing threads.

7. An airbag according to claim 6, wherein the number of layers of the folded part sewn by at least two of the sewing lines provided in the longitudinal direction of the fold is different.

8. An airbag according to claim 6, wherein a plurality of said sewing threads are provided at intervals along a direction from one of said folds toward another of said folds adjacent to said another fold, and at least one of said sewing threads is used to sew two adjacent layers of said folded parts.

9. An airbag according to claim 8, wherein the number of layers of the folded part sewn by at least two of the sewing threads arranged in a direction in which one of the folding lines faces the adjacent other folding line is different.

10. A vehicle, characterized in that the vehicle comprises:

a vehicle body; and

the airbag of any of claims 1-9, said airbag body being foldable to said roof.

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