CN218287669U - Vehicles and their airbags - 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

Vehicles and their airbags

technical field

The utility model relates to the technical field of safety devices, in particular to a vehicle and a safety air bag thereof.

Background technique

When the car collides, the airbag provides effective anti-collision protection for the occupants. In a vehicle frontal collision, that is, when a collision occurs along the forward direction of the vehicle body, a conventional frontal restraint system consists of seat belts and airbags, which together protect the torso, head and neck of the occupant in a frontal collision. When a collision occurs, the occupant moves forward to impact the airbag. Due to the different positions of the occupant, the weight of the occupant and the impact force received by the occupant, the traditional airbag cannot meet the needs of safety diversity and cannot meet the different needs of occupants. security protection provided.

Utility model content

Based on this, it is necessary to address the above-mentioned problems and provide a vehicle and an airbag thereof that can meet diverse safety requirements.

A safety airbag for a vehicle, the safety airbag includes an airbag body, a part of the airbag body is folded to form a multi-layer folded portion stacked on top of each other, and the stacking direction of the multi-layered folded portion is the forward direction of the vehicle body , the multi-layered folds are stitched together by sutures, and the sutures can be broken under stress.

In one embodiment, the airbag is a roof-mounted airbag, and the folds are formed at the top of the airbag body.

In one of the embodiments, the safety airbag of the vehicle further includes an air intake bag body, an air intake passage is formed in the air intake bag body, the air bag body is connected to the air intake bag body, and the air bag body is connected to the air bag body. A communication port is formed at the connection of the air bag body, and the communication port communicates the air intake passage with the inner space of the air bag body; the fold portion is formed at a position of the air bag body close to the communication port.

In one embodiment, the distance between the folded portion and the communicating port is 5mm-20mm.

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

In one of the embodiments, along the length direction of the crease of the folded portion, a plurality of the sutures are arranged at intervals, and two adjacent layers of the folded portion are stitched by at least one of the sutures.

In one of the embodiments, the number of layers of the wrinkle part sewn by at least two of the sutures arranged along the length direction of the crease is different.

In one of the embodiments, along the direction from one crease to the other adjacent crease, a plurality of seams are provided at intervals, and the folded parts of two adjacent layers pass through at least one of the creases. Said sutures are sutured.

In one of the embodiments, the number of layers of the folds sewn by at least two of the sutures arranged along a direction from one crease toward another adjacent crease is different.

A vehicle includes a vehicle body and the airbag as described above, and the airbag body can be folded to the top of the vehicle body.

For the above-mentioned vehicle and its airbag, during a frontal collision of the vehicle, when the occupant is wearing a safety belt, the upper body of the occupant moves forward, and the head will hit the airbag body of the airbag. Due to the different energy of the collision, the different positions of the occupants, and the different weights of the occupants, the impact force received by the occupants is different, and the forward movement distance is also different. The impact force received by the folded part of the wall of the airbag body formed by folding multiple layers stacked on each other is also different. Since the multi-layered folds are stitched with sutures, the sutures are broken according to the impact force. If the impact force is large, the sutures will break more, and the folds will have more layers. The released airbag body will have a larger wall. If the impact force on the airbag body is small, the location of suture breakage is relatively small, the number of layers unfolded by the folds is small, and the released airbag body has fewer walls, which in turn provides a more comfortable environment for the occupants. Provides less buffer space. The above-mentioned airbag can expand different layers of folds according to the impact force of the occupant impacting the airbag body, thereby providing different cushioning spaces for occupants under different impact forces, and can realize the safety requirements for occupant protection under different situations.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute an improper limitation of the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

In addition, the drawings are not drawn on a 1:1 scale, and the relative sizes of the various elements are drawn in the drawings only as examples and not necessarily to true scale. In the attached picture:

Fig. 1 is a schematic structural view of an airbag in an embodiment;

Fig. 2 is a side view of the folded part in Fig. 1;

Fig. 3 is a top view of the wrinkled portion shown in Fig. 2 in an embodiment;

FIG. 4 is a top view of another embodiment of the wrinkled portion shown in FIG. 2 .

Explanation of reference signs:

10, airbag; 100, airbag body; 110, folded part; 120, suture line; 130, communication port; 200, air intake bag body;

detailed description

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below limit.

1 and 2, a vehicle in an embodiment of the present invention includes a vehicle body and an airbag 10. The airbag 10 is arranged on the vehicle body and pops up after the vehicle body is hit to protect the safety of the occupants.

In this embodiment, the airbag 10 is arranged on the top of the vehicle body, and the airbag 10 is a roof-mounted airbag 10 . After the frontal collision of the vehicle body, the safety airbag 10 protects the occupant from the front.

Specifically, the airbag 10 includes an airbag body 100. Part of the bag wall of the airbag body 100 is folded to form a multi-layer folded portion 110 stacked on top of each other. Portion 110 is stitched by sutures 120 which are breakable under force.

During the frontal collision of the vehicle, the upper body of the occupant moves forward while the occupant is wearing the safety belt, and the head of the occupant will hit the airbag body 100 of the airbag. Due to the different energy of the collision, the different positions of the occupants, and the different weights of the occupants, the impact force received by the occupants is different, and the forward movement distance is also different. The impact force received by the folded portion 110 formed by folding a part of the bag wall of the airbag body 100 to form multiple layers stacked on top of each other is also different. Since the multi-layered folds 110 are sewn together by sutures 120, the sutures 120 have different fracture conditions according to the magnitude of the impact force. If the impact force is large, the sutures 120 will have more broken positions, and the folds 110 will have more layers to expand. The body 100 has more walls, which provides a large cushioning space for the occupants; if the impact force on the airbag body 100 is small, the sutures 120 are relatively less broken, and the number of layers of the folded portion 110 is less, and the released airbag body The bladder wall of the 100 is smaller, which in turn provides less cushioning space for the occupant. The above-mentioned airbag 10 can expand the wrinkled portion 110 of different layers according to the impact force of the occupant impacting the airbag body 100, and then provide different buffer spaces for occupants under different impact forces, and can realize occupant protection in different situations. Safety requirements.

If the airbag body 100 is not formed with multiple layers of folded portions 110 stacked on top of each other, when the occupant is subjected to impact forces of different magnitudes, the size of the airbag body 100 will not change, resulting in the same buffer space for the occupant to pass through the airbag body 100 under different conditions. , then it will lead to insufficient buffer space brought by the airbag body 100 when the occupant is subjected to a relatively large impact force, thereby increasing the risk of injury to the occupant.

In this embodiment, the airbag 10 is a roof-mounted airbag 10 , and the folded portion 110 is formed at the top of the airbag body 100 .

During a frontal collision of a vehicle, when the occupant is wearing a seat belt, the upper body of the occupant moves forward, and the head is supported by the airbag body 100. Since the impact energy on the occupant's head is different under different circumstances, the occupant's head moves forward. The exercise distance is also different. Furthermore, by forming the folded portion 110 at the top position of the airbag body 100, the folded portion 110 at the top position of the airbag body 100 has a different number of layers to expand under different impact conditions, so as to adapt to the distance that the occupant’s head needs to move forward in different situations, so that The head gets enough forward space and safety protection.

In other embodiments, the airbag 10 can also be arranged 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, so as to ensure different expansion degrees during the impact process and adapt to different situations. Collision shock.

In one embodiment, the airbag 10 further includes an air intake bag body 200, an air intake passage 210 is formed in the air intake bag body 200, the air bag body 100 is connected to the air bag body 200, and the connection between the air bag body 100 and the air bag body 200 is formed There is a communication port 130 , which communicates the air intake channel 210 with the inner space of the airbag body 100 ; When the vehicle body is impacted, the airbag 10 pops up and inflates the space in the airbag body 100 through the air intake passage 210 of the airbag body 200 through the communication port 130, so as to realize the cushioning and protection function of the airbag body 100. Since the occupant mainly impacts on the side of the airbag body 100 facing away from the air bag body 200, the folded portion 110 is formed on the position of the airbag body 100 close to the communication port 130 to prevent the occupant from directly impacting on the folded portion 110. The unfolding of the folded portion 110 is affected, and on the other hand, the protection of the occupant is prevented from being affected by the folded portion 110 during the unfolding process.

Specifically, the airbag 10 further includes a gas generator 300 , the air intake bag body 200 is connected to the gas generator 300 , and the gas generator 300 is used to inflate the airbag body 100 through the air intake channel 210 . The airbag 10 can be inflated by the gas generator 300 after the airbag 10 has been ejected. In this embodiment, the gas generator 300 is disposed on the top wall of the vehicle body.

In one embodiment, the distance between the folded portion 110 and the communicating port 130 is 5mm-20mm. Avoid the distance between the folded part 110 and the communication port 130 being too far or too far, which will affect the direction of the impact force received by the folded part 110, and then affect the direction of the force of the suture 120, and at the same time, it will not prevent the occupant from directly impacting the airbag body 100 at the position of the crease 110 . In this embodiment, the distance between the folded portion 110 and the communicating port 130 is 10 mm. In other embodiments, the distance between the folded 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 forming the folded portion 110 of the airbag body 100 along the advancing direction of the vehicle body is greater than or equal to 120 mm. It can be understood that the length of the folded portion 110 along the advancing direction of the vehicle body is greater than or equal to 120mm after being unfolded. It can also be understood that when all the folded portions 110 are deployed, the length of the wall of the airbag body 100 along the forward direction of the vehicle body can be increased by more than 120 mm. By folding the wall of the airbag body 100 with a length greater than or equal to 120mm to form the folded portion 110, when the airbag body 100 is impacted, the wall of the airbag body 100 will increase by at least 120mm, so as to achieve a buffer distance of at least It can increase more than 0-120mm.

In one embodiment, the number of layers of the wrinkled portion 110 is greater than or equal to two. The more layers of the folded portion 110, the greater the impact energy that the folded portion 110 can withstand, and the number of layers of the folded portion 110 and the length of the wall of the airbag body 100 forming the folded portion 110 can be set according to different needs.

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

Referring to FIG. 3 and FIG. 4 , in one embodiment, a plurality of sutures 120 are provided at intervals along the length direction L of the crease of the crease 110 , and at least one suture 120 is used to sew two adjacent folds 110 . By arranging a plurality of sutures 120 in the longitudinal direction L of the crease, the stability of the connection of the folded parts 110 of each layer can be ensured, and the ability to withstand impact energy can be improved.

Specifically, the number of layers of the folded portion 110 sewn by at least two sutures 120 arranged along the length direction L of the crease is different. Since the number of layers of the folds 110 sewn by sutures 120 is different, after the folds 110 are subjected to impact energy, the folds 110 sewn by fewer sutures 120 are first to unfold, and the impact energy increases, and the corresponding more The folded portion 110 sewed by the suture thread 120 will be further unfolded, so as to prevent the folded portion 110 from fully unfolding or not unfolding under one impact energy.

As shown in FIG. 3 , after being impacted, the folded portion 110 on the lowermost layer is only sewed with two sutures 120 , and then unfolds first, while the folded portion 110 on the uppermost layer is sewed by 10 sutures 120 to be the fastest. late unfolding.

Similarly, as shown in FIG. 4 , after being impacted, the folded portion 110 at the lowermost layer has only four sutures 120 sewed, and then it will unfold first, while the folded portion 110 at the uppermost layer is stitched with 12 sutures 120 . will be launched at the latest.

Referring to FIG. 1 together, in other embodiments, along the forward direction of the vehicle body, the folds 110 in the middle may be stitched with more stitches 120 , while the folds 110 at both ends are stitched with fewer stitches 120 . Alternatively, the folded portion 110 located near the communication opening 130 may be sutured with more sutures 120 , and the folded portion 110 farther from the communication opening 130 may be sutured with fewer sutures 120 . Alternatively, the folded portion 110 located near the communication opening 130 is sutured with fewer sutures 120 , and the folded portion 110 farther away from the communication opening 130 is sutured with more sutures 120 .

Referring to Fig. 1 and Fig. 2, a plurality of sutures 120 arranged at intervals are arranged along the direction of one crease towards the other adjacent crease, and at least one suture 120 is passed through the folds 110 of two adjacent layers. suture. In this embodiment, a direction along one crease toward another adjacent crease is defined as a width direction b, that is, a plurality of sutures 120 are also arranged along the width direction b. Through the plurality of sutures 120 in the width direction b, the stability of the connection of the folded portion 110 can be further ensured, and the folded portion 110 can be gradually unfolded when impacted. Moreover, the plurality of sutures 120 can improve the ability of the folded portion 110 to withstand impact energy.

Specifically, the number of layers of the folded portion 110 sewn by at least two suture lines 120 arranged along a direction from one crease toward another adjacent crease is different. That is, along the width direction b, the number of layers of the folded portion 110 sewed by at least two suture lines 120 is different. Since the number of layers of the folded portion 110 stitched by sutures 120 is different, and then after the folded portion 110 is subjected to impact energy, the folded portion 110 starts to unfold from the position where less sutures 120 are stitched. It will also gradually increase, so as to avoid the situation that the folds 110 are all unfolded at once under one impact energy.

As shown in FIG. 2 , after being impacted, the rightmost folded portion 110 will unfold first, and the leftmost folded portion 110 will unfold the latest.

In other embodiments, the number of layers of the folded portion 110 stitched by the multiple sutures 120 arranged along the length direction L of the crease of the folded portion 110 is the same, while the multiple stitched threads 120 arranged along the width direction b are stitched together. The number of layers of the wrinkled portion 110 is inconsistent. Or the number of layers of the folded portion 110 sewn by the plurality of sutures 120 arranged along the longitudinal direction L of the crease of the crease 110 is inconsistent, and the number of layers of the folded portion 110 stitched by the plurality of sutures 120 arranged along the width direction b is consistent .

The various technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of concise description, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; may be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediary, and may be an internal communication between two elements or an interactive relationship between two elements, unless otherwise stated Clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. 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. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions are for the purpose of illustration only and are not intended to represent the only embodiment.

Claims (10)

1. A safety airbag for a vehicle, characterized in that the safety airbag comprises an airbag body, and part of the bag wall of the airbag body is folded to form a multi-layer folded portion stacked on top of each other, and the stacking of the multi-layer folded portion The setting direction is the forward direction of the vehicle body, and the multi-layered folds are stitched by sutures, and the sutures can be broken under force. 2 . The airbag for a vehicle according to claim 1 , wherein the airbag is a roof-mounted airbag, and the folds are formed at the top of the airbag body. 3 . 3. The airbag for a vehicle according to claim 2, wherein the airbag further comprises an air intake bag body, an air intake channel is formed in the air intake bag body, and the air bag body is connected to the air intake bag body , and the connection between the airbag body and the airbag body is formed with a communication port, and the communication port communicates the air intake channel with the inner space of the airbag body; the fold portion is formed near the airbag body The location of the connecting port. 4 . The airbag for a vehicle according to claim 3 , wherein the distance between the folded portion and the communicating port is 5mm-20mm. 5. The airbag for a vehicle according to any one of claims 1-4, characterized in that, the length of the wall of the airbag body forming the folded portion along the advancing direction of the vehicle body is greater than or equal to 120 mm. 6. The airbag for a vehicle according to any one of claims 1-4, characterized in that, along the length direction of the creases of the folds, a plurality of stitching lines arranged at intervals are arranged, two adjacent The folded portion of the layer is stitched by at least one of the stitching threads. 7 . The airbag for a vehicle according to claim 6 , characterized in that, the number of layers of the wrinkled parts sewn by at least two of the suture lines arranged along the length direction of the crease is different. 8 . 8. The airbag for a vehicle according to claim 6, characterized in that, along the direction from one of the creases to the other adjacent crease, there are a plurality of stitching lines arranged at intervals, corresponding to Two adjacent layers of the folded portion are stitched together by at least one stitching thread. 9 . The airbag for a vehicle according to claim 8 , wherein the folds sewn by at least two of the seaming lines arranged along the direction of one of the creases towards the adjacent other of the creases The number of layers is different. 10. A vehicle, characterized in that the vehicle comprises: bodywork; and The airbag according to any one of claims 1-9, wherein the airbag body can be folded to the roof of the vehicle body.

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