Anti-diving airbag device

Abstract

The utility model provides an anti-diving air bag device which comprises an air bag and a gas generator, and the air bag is installed below a seat cushion. The gas generator is installed at the front end of the air bag and connected with the seat framework. The gas generator is provided with a collision signal receiving module, the collision signal receiving module receives a collision signal and triggers the gas generator, and the gas generator inflates the air bag. The anti-diving airbag device is installed below an automobile seat cushion, when an automobile is collided, the device bursts an airbag, the airbag supports a human body and prevents the human body from sliding out downwards and forwards (the diving phenomenon is avoided), meanwhile, the restraint effect of a safety belt is matched, injuries to passengers in the collision process can be effectively reduced, and the safety of the passengers is improved. And the safety of passengers in a wide-angle sitting posture is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to an air bag device, in particular to a submarine-preventing air bag device. BACKGROUND

[0002] In the field of modern automobile transportation, the safety of passengers is always a crucial concern. As a widely used and recognized effective safety device, the automobile safety belt can restrain the passengers when the vehicle collides, avoid the secondary collision between the passengers and the components such as steering wheel and instrument panel in the vehicle, or prevent the passengers from being thrown out of the vehicle due to the inertia of the collision, thereby greatly reducing the risk of injury and death.

[0003] However, in actual collision scenarios, especially when the vehicle is equipped with a seat that can be adjusted to a large angle sitting position (such as a lying position similar to a zero-gravity seat), a safety hazard called "submarine phenomenon" occurs. The traditional automobile seat safety protection measure mainly relies on the restraint of the safety belt on the passenger's hips, but when the vehicle collides frontally, due to the huge inertia generated by the collision, the passenger's hips may drill out of the range of the safety belt along the seat surface, which is the "submarine phenomenon". Once the submarine phenomenon occurs, the restraint of the safety belt on the passenger's hips will be ineffective, and instead, it will act on the passenger's relatively soft abdomen, which undoubtedly increases the risk of injury to the passenger's soft tissue in the abdomen, seriously threatening the life and health of the passenger.

[0004] In order to solve this problem, some attempts have been made in the early stage to introduce air bag devices into automobile seats to prevent passengers from diving. For example, some schemes install air bags in the seat backrest or other positions, but these schemes have many shortcomings. On the one hand, the air bag installed in the seat backrest mainly pushes the passenger backward when inflated, which is not strong enough to inhibit the downward and forward diving movement of the passenger's hips, and cannot effectively solve the diving problem. On the other hand, some air bags set in other positions of the seat cannot accurately support the seat cushion after inflation, making the seat cushion unable to effectively drive the passenger's upper legs to rotate upward around the hip rotation center, or the shape and force of the air bag itself cannot form a good cooperative relationship with the restraint of the safety belt, resulting in poor effect in preventing the passenger from diving and avoiding the safety belt from hurting the passenger.

[0005] Meanwhile, the existing structure of car seats also limits the effective implementation of the anti-submersion measures to some extent. For example, the seat cushion is usually composed of a seat cushion framework and a seat cushion foam layer, and the traditional seat design does not fully consider how to better integrate the safety protection device to prevent submersion in a large-angle sitting position. Although the seat cushion foam layer can provide a certain comfort, its elasticity and support characteristics cannot effectively prevent the occupant from submerging in the face of a collision.

[0006] In summary, although the field of automobile safety has been striving to improve the safety protection level of the occupants, in the specific problem of preventing the occupants from submerging, especially for vehicles equipped with large-angle sitting seats, the existing protection measures and seat structure have obvious shortcomings and deficiencies, and a more effective anti-submersion airbag device and related seat safety comprehensive solution are urgently needed. Content of the utility model

[0007] The utility model discloses an anti-submersion airbag device. The anti-submersion airbag device is installed below the car seat cushion. When the vehicle collision occurs, the device detonates the airbag, and the airbag supports the human body to prevent the human body from sliding out downward and forward (avoiding the submersion phenomenon), while cooperating with the restraint effect of the safety belt, can effectively reduce the injury of the occupant in the collision, and ensure the safety of the occupant in the large-angle sitting position.

[0008] The utility model provides an anti-submersion airbag device, including airbag and gas generator, the airbag is installed below seat cushion, the gas generator is installed in the airbag front end, the gas generator is connected with seat framework, the gas generator has crash signal receiving module, and crash signal receiving module receives crash signal and triggers gas generator, and gas generator fills airbag with gas.

[0009] In one embodiment, the anti-submersion airbag overall structure is U-shaped.

[0010] In one embodiment, the airbag volume after inflation is 6 liters.

[0011] In one embodiment, the airbag mass after inflation is 400g.

[0012] In one embodiment, the airbag outer surface is covered with a sealing coating.

[0013] In one embodiment, the gas generator includes a welding stud, and the welding stud is connected to the seat framework by a bolt.

[0014] In one embodiment, the anti-submersion airbag device includes a lock washer installed on the connecting component of the gas generator, which can prevent the connection from loosening.

[0015] In one embodiment, the gas generator is an explosion-type gas generator.

[0016] In one embodiment, the anti-submersion airbag device further comprises a protective layer non-woven fabric, which is covered on the outer surface of the airbag and can prevent the airbag body from being cut.

[0017] In one embodiment, the anti-submersion airbag device further comprises a shaping cloth, which comprises a drawstring structure connected under the seat cushion to unfold and fix the airbag at a predetermined position. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the anti-submersion airbag device of the preferred embodiment of the present application;

[0019] Figure 2 is a top view of the anti-submersion airbag device of the preferred embodiment of the present application;

[0020] Figure 3 is a position schematic diagram of the anti-submersion device of the preferred embodiment of the present application;

[0021] Figure 4 is a use effect schematic diagram of the anti-submersion airbag device of the preferred embodiment of the present application.

[0022] Reference signs:

[0023] Airbag-1;

[0024] Gas generator-2;

[0025] Welding stud-21;

[0026] Lock washer-3;

[0027] Protective layer non-woven fabric-4;

[0028] Shaping cloth-5. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0030] In addition, it needs to be explained that, unless otherwise explicitly specified and limited, the "installation", "connection", "connection" and similar words used in the description of the present application should be understood broadly, for example, the connection can be fixed connection, or detachable connection, or integrally connected; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements, and those skilled in the art can understand the specific meaning of the present application according to the specific circumstances.

[0031] Figure 2 It is the top view of the anti-diving air bag device of the preferred embodiment of the utility model. Figure 2 It is the top view of the anti-diving air bag device of the preferred embodiment of the utility model. As shown in Figure 2 The utility model discloses a whole structure is U type, including an air bag 1 and gas generator 2, the gas generator 2 includes a collision signal receiving module. The air bag 1 is installed below the seat cushion, and its specific position is below the seat cushion foam layer and close to the front area of seat cushion. Such installation position makes the air bag 1 when inflating can effectively lift the front of seat cushion foam layer upward, thereby preventing the occupant from diving when the vehicle suffers collision and is in the large angle sitting posture (such as lying posture similar to zero gravity seat), that is, preventing the human body from sliding downward and forward. The gas generator 2 is installed at the front end of the air bag 1, and the gas generator 2 is connected with the seat framework, and this layout is beneficial to the gas generator 2 after receiving the trigger signal rapidly and efficiently inflating the air bag 1, to ensure that the air bag 1 can timely develop the protection function at the critical moment. When the vehicle collides, the collision detection device on the vehicle will generate a collision signal (the collision detection device can use the commercially available product), and the collision signal receiving module is used to receive the collision signal. When the collision signal receiving module receives the collision signal, the gas generator is triggered, and the gas generator inflates the air bag.

[0032] In the actual installation process, first, the gas generator 2 is accurately placed at the corresponding position of the front end of the air bag 1, the welding stud 21 is aligned with the pre-installed mounting hole position on the seat framework, and then the bolt of the appropriate specification is selected to pass through the welding stud 21 and is tightened on the seat framework. Through this bolt connection mode, the connection between the gas generator 2 and the seat framework can be ensured to be stable and reliable, so that even if the vehicle is subjected to external forces such as bumping and vibration during driving, the gas generator 2 will not be easily displaced or loosened, thereby ensuring that it can work normally when it needs to be inflated.

[0033] Preferably, the anti-submersion airbag device comprises an anti-loosening washer 3, which is installed on the connecting part of the gas generator and can prevent the connection from loosening. Specifically, the anti-loosening washer 3 is placed between the welding stud 21 of the gas generator 2 and the bolt, and when the bolt is tightened, the anti-loosening washer 3 will be deformed by extrusion, thereby generating additional friction force, tightly biting the bolt and the welding stud 21, and further enhancing the fastening of the connection. During long-term use of the vehicle, if there is no anti-loosening washer 3, the bolt may gradually loosen due to the influence of external forces such as vibration, thereby affecting the normal operation of the gas generator 2 and the inflation effect of the airbag 1. However, with the presence of the anti-loosening washer 3, the influence of these external forces on the connection part can be effectively resisted, ensuring that the gas generator 2 is always stably installed on the seat frame.

[0034] Preferably, the volume of the airbag 1 after inflation is 6 liters. This volume size can ensure that the airbag 1 has enough volume after inflation to lift the seat cushion foam layer upward, providing effective support for the occupant and preventing the occurrence of submersion phenomenon, and also will not occupy too much space below the seat cushion due to the too large volume, affecting the overall structure and comfort of the seat.

[0035] Preferably, the mass of the airbag 1 after inflation is 400g. The relatively light mass of the airbag 1 makes the airbag 1 not cause excessive additional burden to the seat cushion during the inflation and deployment process, and also will not affect its inflation speed and support effect due to its own weight, and the lighter mass also helps to reduce the influence on the overall performance of the vehicle during driving.

[0036] Preferably, the outer surface of the airbag 1 is covered with a sealing coating. The sealing coating has multiple important functions. On the one hand, it can effectively prevent the leakage of gas inside the airbag 1. After the gas generator 2 inflates the airbag 1, the airbag 1 needs to maintain the inflated state to achieve the functions of supporting the occupant and preventing diving, etc. The sealing coating can block the gas molecules from escaping from the wall of the airbag 1, ensuring that the airbag 1 can maintain sufficient inflation and support force during the entire operation process (such as from the inflation at the moment of collision to the subsequent period of continuously supporting the occupant). On the other hand, the sealing coating can also improve the wear resistance and tear resistance of the airbag 1. Under the working conditions of daily use of the vehicle and possible collisions, the airbag 1 may come into frictional contact with other components inside the seat. The sealing coating can make the airbag 1 better withstand these frictions, prolong the service life of the airbag 1, and ensure that it can normally inflate and develop functions at critical moments. In addition, the sealing coating can also resist chemical corrosion. There are various chemicals in the interior environment of the vehicle, such as residues of seat cleaning products and chemicals emitted by interior decoration materials, which may corrode or adversely affect the material of the airbag 1. The sealing coating as a chemical protection barrier can ensure that the material properties of the airbag 1 are not damaged and maintain good inflation and support performance.

[0037] Preferably, the gas generator is a combustion-type gas generator.

[0038] Figure 1 Figure 1 is a structural schematic diagram of a diving-preventing airbag device according to a preferred embodiment of the present application. As shown in Figure 1, the diving-preventing airbag device according to the preferred embodiment of the present application further comprises a protective layer non-woven fabric 4 and a shaping cloth 5. Figure 1

[0039] Preferably, the protective layer non-woven fabric is covered on the outer surface of the airbag, which can prevent the airbag body from being split. Specifically, the protective layer non-woven fabric 4 is tightly attached to the outer surface of the airbag 1, and has a certain strength and toughness, which can resist the splitting threat from sharp objects from the outside. During the driving of the vehicle, the airbag 1 may come into friction or collision with the components inside the seat, or may encounter the accidental penetration of sharp objects carried by the passenger, etc. The protective layer non-woven fabric 4 as the first line of defense can effectively protect the airbag 1 body from being split, ensuring that the airbag 1 can normally inflate and develop functions when needed.

[0040] ​Preferably, the anti-submersion airbag device further comprises a shaping cloth, which comprises a drawstring structure connected below the seat cushion, and which unfolds and fixes the airbag 1 at a predetermined position. Specifically, the shaping cloth 5 is made of cloth with certain flexibility and strength, and the drawstring structure generally comprises a plurality of drawstrings (for example, four drawstrings in this embodiment). During installation, the shaping cloth 5 is first wrapped outside the airbag 1, and the drawstrings of the drawstring structure are respectively connected to predetermined fixing points below the seat cushion, and then the drawstrings are fixed below the seat cushion by means of tightening, buckling connection or the like, so as to unfold and fix the airbag 1 at a predetermined position below the foam layer of the seat cushion. In this way, the shaping cloth 5 not only enables the airbag 1 to maintain an unfolded state and be fixed at a correct position when not inflated, preventing it from being rolled up or displaced, but also plays a certain restraining and shaping role on the airbag 1 during the inflation process and after the inflation is completed, so as to maintain the shape of the airbag 1 and keep it in a relatively regular state, which is conducive to better cooperation between the airbag 1 and the foam layer of the seat cushion and other related components, and more effective implementation of the function of preventing the human body from submerging.

[0041] Through the above specific embodiments, the anti-submersion airbag device of the utility model can effectively prevent the occupant from submerging when the vehicle is subjected to a collision and the occupant is in a large-angle sitting posture, cooperate with the restraining effect of the safety belt, reduce the injury of the occupant in the collision, and ensure the stability, reliability and good adaptability to the seat of the structure itself.

[0042] The utility model has the following beneficial effects:

[0043] 1. For the specific application scenario of the large-angle lying posture of the zero-gravity seat, the collision safety problem is effectively solved, and the phenomenon of human body submerging is avoided, which reduces the occupant collision injury in cooperation with the safety belt.

[0044] 2. When the vehicle collides, the airbag presents a U-shaped inflation, which can better fit the human body sitting posture, adapt to the seat ventilation device, provide a relatively more uniform support force distribution, and provide a certain support force to the human body from the side to a certain extent in addition to providing support in the vertical direction to prevent the human body from submerging. When the vehicle collides, in addition to the forward and downward movement trend of the occupant's body, the occupant's body may also sway to the side. The multi-angle support characteristic of the U-shaped airbag can limit this side sway to a certain extent.

[0045] 3. After the airbag is filled, the material is less and the weight is small, which occupies a small space and does not increase too much burden on the seat while ensuring the protection function.

[0046] 4. The installation structure is simple, convenient to embed below the seat cushion, and easy to assemble into the seat.

[0047] The above-described embodiments are only further descriptions of the present application, and are not intended to limit the present application in other forms. The present application can have other various embodiments. Those skilled in the art can make various corresponding modifications and changes to the above-described embodiments without departing from the spirit and essence of the present application, and the protection scope of the present application should be the maximum scope of the innovative features mentioned in the claims.

[0048] In the description of the present application, it should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The techniques, methods and devices known to those skilled in the art can not be discussed in detail, but under appropriate circumstances, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0049] It should be noted that in the present application, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. It should also be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from the described order, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0050] The above-described embodiments are provided to those skilled in the art to implement or use the present application, and those skilled in the art can make various modifications or changes to the above-described embodiments without departing from the application idea of the present application, and therefore the protection scope of the present application should not be limited by the above-described embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A submersion-preventing airbag device characterized by comprising: The airbag and the gas generator are arranged under the seat cushion, the gas generator is arranged at the front end of the airbag, the gas generator is connected with the seat framework, the gas generator has a collision signal receiving module, the collision signal receiving module receives a collision signal and triggers the gas generator, and the gas generator inflates the airbag The anti-submersion airbag device comprises an anti-loosening washer, which is installed on the connecting component of the gas generator and can prevent the connection from loosening.

2. The anti-submergence airbag device according to claim 1, characterized by The overall structure of the anti-submersion airbag device is U-shaped.

3. The anti-submergence airbag device according to claim 1, characterized by The volume of the airbag after inflation is 6 liters.

4. The anti-submergence airbag device according to claim 1, characterized by The mass of the airbag after inflation is 400 g.

5. The anti-submergence airbag device according to claim 1, characterized by The outer surface of the airbag is covered with a sealing coating.

6. The anti-submergence airbag device according to claim 1, characterized by The gas generator comprises a welding stud, which is connected with the seat framework through a bolt.

7. The anti-dive airbag arrangement of claim 1, wherein, The gas generator is a combustion-type gas generator.

8. The anti-dive airbag arrangement of claim 1, wherein, The anti-submersion airbag device further comprises a protective layer of non-woven fabric, which covers the outer surface of the airbag to prevent the airbag body from being torn.

9. The anti-dive airbag arrangement of claim 1, wherein, The anti-submersion airbag device further comprises a shaping cloth, which comprises a drawstring structure connected under the seat cushion to unfold and fix the airbag at a predetermined position.

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