Double-cavity side face far-end automobile safety air bag structure

Abstract

The utility model discloses a double-cavity side face far-end automobile safety air bag structure which is installed in the side portion of a main driving seat and comprises an air bag and a gas generator, the gas generator inflates gas into the air bag when side face collision occurs, and the air bag is rapidly unfolded and arranged between the main driving seat and a co-driving seat. The air bag comprises an upper cavity bag body and a lower cavity bag body which are arranged up and down, the upper cavity bag body and the lower cavity bag body are connected, and at least one air guide channel is formed at the connecting position of the upper cavity bag body and the lower cavity bag body. According to the utility model, passengers are prevented from colliding with each other, and the passengers can be prevented from being hurt due to overlarge amplitude during lateral deflection.

Description

Technical Field

[0001] This utility model relates to the field of automotive airbag technology, and in particular to a dual-chamber side distal automotive airbag structure. Background Technology

[0002] Car airbags are passive safety devices that work in conjunction with seat belts to provide effective collision protection for occupants. In a car collision, airbags can reduce the rate of head injuries by about 25% and facial injuries by about 80%. To prevent occupants from colliding with each other in side collisions, and to avoid excessive lateral displacement during a collision that could lead to injuries to the head, spine, etc., distal side airbags were specifically developed to protect the head and torso. However, because occupants move significantly during side collisions, distal side airbags, lacking sufficient support, are easily compressed and tilted, failing to provide effective protection.

[0003] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dual-chamber side distal automotive airbag structure that avoids collisions between occupants and provides stable support, in order to address the shortcomings of the existing technology.

[0005] The technical problem to be solved by this utility model can be achieved by the following technical solution:

[0006] A dual-chamber side-mounted distal airbag structure for automobiles, installed within the side portion of the driver's seat, includes an airbag and a gas generator. Upon a side collision, the gas generator inflates the airbag, causing it to rapidly deploy and position itself between the driver's and passenger's seats. Its distinguishing feature is that...

[0007] The air bag includes an upper chamber bag and a lower chamber bag arranged vertically, the upper chamber bag and the lower chamber bag are connected and at least one air guiding channel is formed at the connection.

[0008] In a preferred embodiment of this utility model, the volume of the upper cavity bag is larger than the volume of the lower cavity bag.

[0009] In a preferred embodiment of this utility model, at least one upper vent is provided at the connection position between the upper cavity bag and the lower cavity bag, and at least one lower vent is provided at the connection position between the lower cavity bag and the upper cavity bag. The upper cavity bag and the lower cavity bag are connected by sewing, and during sewing, each upper vent of the upper cavity bag is connected to each lower vent of the lower cavity bag. The connection between the upper vent and the lower vent forms the air guiding channel.

[0010] In a preferred embodiment of this utility model, the coverage area of ​​the upper cavity bag after unfolding is as follows: upward to the highest point of the occupant's head, forward to the foremost position where the occupant's torso can move after a lateral collision, and backward to the position where the occupant's torso can move backward the most when seated; the coverage area of ​​the lower cavity bag after unfolding is as follows: downward to the occupant's pelvis, forward to the foremost position where the occupant's torso can move after a lateral collision, backward to the position where the occupant's torso can move backward the most when seated, and upward to the occupant's shoulder or chest.

[0011] In a preferred embodiment of this utility model, the angle between the upper cavity bag and the lower cavity bag after unfolding is greater than 90° and less than 180°.

[0012] In a preferred embodiment of this utility model, the angle between the upper cavity bag and the lower cavity bag after unfolding is 135°.

[0013] In a preferred embodiment of this utility model, the upper cavity bag body is formed by folding a piece of upper cavity bag body cut piece in half and sewing it along the periphery; or, it is formed by sewing two symmetrically arranged pieces of upper cavity bag body cut pieces along the periphery; or, it is formed by folding a piece of upper cavity bag body cut piece in half and sewing it with a piece of top surface bag body cut piece along the periphery to form a three-dimensional shape in the form of a triangular prism.

[0014] In a preferred embodiment of the present invention, the upper cavity bag body is provided with an upper cavity pull strap for controlling the volume and posture of the upper cavity bag body.

[0015] In a preferred embodiment of this utility model, the lower cavity bag body is formed by folding a butterfly-shaped lower cavity bag body piece in half and sewing it along the periphery; or, it is formed by sewing symmetrically arranged left and right lower cavity bag body pieces along the periphery.

[0016] In a preferred embodiment of the present invention, an air inlet channel is formed on the side of the lower cavity bag body, and the gas generator has a cylindrical structure. Its outlet end is inserted into the air inlet channel through the opening of the air inlet channel, and the gas generator is sealed and fixed in the air inlet channel of the lower cavity bag body by connecting fasteners.

[0017] In a preferred embodiment of this utility model, the connecting fastener includes a connecting bracket, a clamp, and a bolt.

[0018] In a preferred embodiment of the present invention, a root strap is provided at the position of the lower cavity bag near the gas generator to stabilize the gas bag when it is fitted onto the gas generator.

[0019] In a preferred embodiment of the present invention, the side of the lower cavity bag is provided with an oblique pull strap for making the lower cavity bag unfold upright without tilting towards the passenger side.

[0020] In a preferred embodiment of the present invention, the lower cavity bag body is provided with a lower cavity pull strap for controlling the volume and posture of the lower cavity bag body.

[0021] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0022] 1. The side distal airbag of this utility model is installed between the occupants. When the car is involved in a side collision, it will quickly inflate and deploy to prevent the occupants from colliding with each other and to prevent the occupants from being injured due to excessive lateral deflection.

[0023] 2. This utility model adopts a dual-cavity design, with the upper and lower cavities each performing their own functions, making it easier to adapt to the vehicle body shape and passenger position, and protect the head, neck and torso of the passengers;

[0024] 3. The external straps of the air bag in this utility model can prevent the air bag from tipping over and play a stabilizing role. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view of the protected area of ​​the dual-cavity side distal end automotive airbag structure of this utility model.

[0027] Figure 2 This is a side view of the protected area of ​​the dual-cavity, distal-side automotive airbag structure of this utility model.

[0028] Figure 3 This is a schematic diagram of the structure of the dual-cavity side distal end automotive airbag of this utility model.

[0029] Figure 4This utility model relates to a dual-cavity, side-mounted, distal-end automotive airbag structure.

[0030] Figure 5 This is a schematic diagram of the upper cavity bag of an embodiment of the dual-cavity side distal end automotive airbag structure of this utility model.

[0031] Figure 6 This is a schematic diagram of another embodiment of the upper cavity bag of the dual-cavity side distal end automotive airbag structure of this utility model.

[0032] Figure 7 This is a schematic diagram of the lower cavity bag of an embodiment of the dual-cavity side distal end automotive airbag structure of this utility model.

[0033] Figure 8 This is a schematic diagram of another embodiment of the lower cavity bag of the dual-cavity side distal end automotive airbag structure of this utility model.

[0034] Figure 9 This is a schematic diagram of the strap structure of the dual-cavity side distal end automotive airbag structure of this utility model.

[0035] Figures 10 to 16 This is a folding schematic diagram of the dual-cavity side distal end automotive airbag structure of this utility model. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0037] See Figures 1 to 4 The figure shows a dual-chamber side-mounted remote airbag structure, which is installed in the side of the driver's seat 10 and includes an airbag 100 and a gas generator 200. In the event of a side collision, the gas generator 200 inflates the airbag 100, causing it to deploy rapidly and position itself between the driver's and passenger's seats. Specifically, after deployment, the airbag 100 is positioned between the occupant 20 and the secondary instrument panel 30 (center console armrest).

[0038] The airbag 100 includes an upper chamber airbag 110 and a lower chamber airbag 120 arranged vertically. The volume of the upper chamber airbag 110 is smaller than that of the lower chamber airbag 120 to maintain the stability of the dual chambers and prevent a top-heavy situation. The upper chamber airbag 110, when deployed, covers the following areas: upwards to the highest point of the occupant's head, forwards to the foremost position of the occupant's torso after a side impact, and backwards to the maximum rearward movement of the occupant's torso while seated. The lower chamber airbag 120, when deployed, covers the following areas: downwards to the occupant's pelvis, forwards to the foremost position of the occupant's torso after a side impact, backwards to the maximum rearward movement of the occupant's torso while seated, and upwards to the occupant's shoulder or chest. If the vehicle body has a sub-dashboard (center console armrest), the lower end of the lower chamber airbag 120 can cover below the sub-dashboard surface, allowing the sub-dashboard to provide side support for the lower chamber airbag 120.

[0039] The angle between the upper chamber 110 and the lower chamber 120 after deployment is greater than 90° and less than 180°. Preferably, the angle between the upper chamber 110 and the lower chamber 120 after deployment is 135°. When the airbag 100 deploys, the upper chamber 110 has a large coverage area, preventing collisions between the driver and front passenger. At the same time, the upper chamber 110 has a large Y-axis width, which can effectively support the head of the driver and front passenger. In this way, the airbag 100 supports the head through the upper chamber 110 and is supported by the lower chamber 120 and the dashboard, which can stabilize the occupant's posture and prevent the occupant from being injured by large-scale swaying.

[0040] The upper cavity bag 110 and the lower cavity bag 120 are connected, forming at least one air passage at the connection point. Specifically, at least one upper vent is provided at the connection point between the upper cavity bag 110 and the lower cavity bag 120, and at least one lower vent is provided at the connection point between the lower cavity bag 120 and the upper cavity bag 110. The upper cavity bag 110 and the lower cavity bag 120 are connected by sewing, and during sewing, each upper vent of the upper cavity bag 110 is connected to each lower vent of the lower cavity bag 120. The connection between the upper and lower vents forms the aforementioned air passage. When the airbag 100 deploys, the gas generated by the gas generator 200 first enters the lower chamber 120, causing the lower chamber 120 to expand rapidly. Simultaneously, the gas in the lower chamber 120 rapidly enters the upper chamber 110 through the air guide channels, causing the upper chamber 110 to expand rapidly, thus providing all-around protection for the occupant's sides. Of course, the number of air guide channels can be set according to the air guide design requirements and is not limited to the number in this embodiment.

[0041] See Figure 5The figure shows the shape of the cut piece and the sewing method of one embodiment of the upper cavity bag body 110 of this utility model. The upper cavity bag body 110 is formed by folding an upper cavity bag body cut piece 110a in half and sewing it along the periphery. The sewing method is that the upper edge 111a and the lower edge 112a are sewn together to form a cavity. Of course, the upper cavity bag body cut piece 110a can also be divided into two pieces along the middle, that is, two symmetrically arranged upper cavity bag body cut pieces 110b and 110c, and sewn along the periphery to form a similar effect. The upper vent 113a is used for the lower cavity bag body 120 to introduce air into the upper cavity bag body 110. The number of upper vent 113a can be one or more. The position of the upper vent 113a close to the two upper cavity bag body cut pieces 110b and 110c can obtain different unfolding effects and achieve different functions. When the upper vent 113a is centered, the upper cavity can be inclined upward at a 45° angle. The upper cavity bag body 110 is provided with a varying number of upper cavity pull straps 114, which are used to control the volume and posture of the upper cavity bag body 110. The upper cavity pull straps 114 are sewn onto the inner sides of the two upper cavity bag body cut pieces 110b and 110c. The upper cavity pull straps 114 are generally long strips and are used to control the volume and posture of the air bag.

[0042] See Figure 6 The figure shows the cut shape and sewing method of another embodiment of the upper cavity bag 110 of this utility model. The upper cavity bag 110 is formed by folding an upper cavity bag cut piece 110d in half and sewing it with a top surface bag cut piece 110e along the periphery to form a three-dimensional shape of a triangular prism. After folding the upper cavity bag cut piece 110d in half along the middle, its upper edge 111d is sewn to the upper edge 111e of the top surface bag cut piece 110e, and its lower edge 112d is sewn to the lower edge 112e of the top surface bag cut piece 110e, so that the upper cavity bag cut piece 110d and the top surface bag cut piece 110e are sewn together to form a three-dimensional shape similar to a triangle. The coverage area of ​​the upper cavity bag 110 is as follows: upward to the highest point of the occupant's head, forward to the foremost point of the occupant's torso that can be moved after a lateral collision, and backward to the torso position of the occupant in a normal sitting posture. Due to the three-dimensional shape of the upper cavity bag 110, it can cover more of the head area, thus solving the problem of insufficient head coverage.

[0043] See Figure 7 The figure shows the shape of the cut piece and the sewing method of one embodiment of the lower cavity bag body 120 of this utility model. The lower cavity bag body 120 is formed by folding a butterfly-shaped lower cavity bag body cut piece 120a in half and sewing it along the periphery. The sewing method is to sew the inner edge 121a and the outer edge 122a together to form a cavity. A butterfly-shaped lower cavity bag body cut piece 120a can also be divided into two parts along the middle, that is, by symmetrically arranged left and right lower cavity bag body cut pieces 120b and 120c, and sewn along the periphery to form a similar effect.

[0044] The lower vent 123a is used for the lower cavity bag 120 to supply air to the upper cavity bag 110. The lower cavity bag 120 and the upper cavity bag 110 are sewn together by stitching the edges of the lower vent 123a and the upper vent 113a together, and a reinforcing waist-shaped sewing is made around the vent. The sewing positions are at the sewing perimeter 115a of the upper cavity bag 110 and the sewing perimeter 124a of the lower cavity bag 120.

[0045] See Figure 7 and combined Figure 3 The U-shaped grooves 125a and 126a of the lower cavity bag 120 are aligned to form an air intake channel 121. The gas generator 200 has a cylindrical structure and a single-ended air outlet. The air outlet 210 of the gas generator 200 is inserted into the air intake channel 121 of the lower cavity bag 120, and the gas generator 200 is sealed and fixed in the air intake channel 121 of the lower cavity bag 120 by connecting fasteners. The connecting fasteners include a connecting bracket 310, a clamp 320, and a bolt 330. The bolt 330 is installed on the connecting bracket 310. After the air outlet 210 of the gas generator 200 is inserted into the air intake channel 121 of the lower cavity bag 120, it is tightened and sealed by the clamp 320. The lower cavity bag 120 has a limiting opening 127a, which cooperates with the middle tongue 311 or the side step of the connecting bracket 310 to position the air bag and the bracket.

[0046] See Figure 8The figure shows the air intake method of the gas generator 200 according to another embodiment of the present invention. The inner edge 121d and the outer edge 122d of the butterfly-shaped lower cavity bag body piece 120d of the lower cavity bag body 120 are sewn together up to the positioning points 123d and 124d. An air intake channel 121 is formed between the positioning points 123d and 124d. After the gas generator 200, the connecting bracket 310 with bolts 330, the clamp 320, etc. are fastened into one piece, the gas generator assembly is installed through the air intake channel 121. The bolts 330 pass through the bolt holes 125d in the butterfly-shaped lower cavity bag body piece 120d. The sealing strip 120e has different widths at the top and bottom, with the upper section being slightly wider than the diameter of the gas generator 200. This allows the outlet end 210 of the single-ended gas generator 200 to pass through the sealed bag formed by the left and right seams, enabling gas to enter the interior of the lower chamber bag 120 without leaking gas from the air inlet channel 121. The sealing strip 12e is sewn with left and right seams, with the upper edge 121e sewn to the edge 122e and the lower edge 123e sewn to the edge 124e, forming a hollow shape. Its upper end allows the outlet end 210 of the gas generator 200 to pass through, and its lower end allows the plug end 220 of the gas generator 200 to pass through. The sealing sheet 120e is sewn to the butterfly-shaped lower cavity bag body piece 120d by sewing the lower edge 125e of the sealing sheet 120e to the part 126d between the positioning points 123d and 124d of the butterfly-shaped lower cavity bag body piece 120d, so as to prevent gas that has entered the lower cavity bag body 120 from leaking out from here.

[0047] See Figure 9 A root strap 130 is provided at the position of the lower cavity bag 120 near the gas generator 200. The root strap 130 is formed by folding a long strip of fabric in half. One end 131 is sewn to the lower end of the lower cavity bag 120, and the other end 132 is looped onto the gas generator 200 to stabilize the airbag. An oblique strap 140 is provided on the side of the lower cavity bag 120. The oblique strap 140 is designed to ensure that the airbag deploys upright and does not tilt towards the passenger side. One end of the oblique strap 140 is sewn to the upper part 122 of the lower cavity bag 120, and the other end is fixed near the gas generator 200 123. The length of the oblique strap 140 is approximately 80% of the length between the upper part 122 of the lower cavity bag 120 and the near the gas generator 200 123. The diagonal pull strap 140 is relatively wide, especially at the upper part 122 of the lower cavity bag body 120 where it is sewn. The wider pull strap can prevent the air bag from rotating along the pull strap, which would cause the air bag to become unstable. In addition, a lower cavity pull strap 124 is provided inside the lower cavity bag body 120. The lower cavity pull strap 124 is sewn onto the inner side of the lower cavity bag body 120 and is generally long and strip-shaped, used to control the volume and posture of the lower cavity bag body 120.

[0048] See Figures 10 to 16The figure shows a method for folding the airbag in a dual-chamber side distal automotive airbag structure, including the following steps:

[0049] Step S10: Lay out the gas bag 100, which is equipped with the gas generator 200, as follows: Figure 10 As shown.

[0050] Step S20: Fold the upper cavity bag 110 along the fold line at the connection point between the upper cavity bag 110 and the lower cavity bag 120 toward one side of the lower cavity bag 120, and place it above the lower cavity bag 120, as shown. Figure 11 As shown.

[0051] Step S30: Fold the upper cavity bag 110 along the upper limit of the required airbag length, while simultaneously folding the lower cavity bag 120 inwards, controlling the position to the lower limit of the required airbag length after final folding. Figure 12 As shown.

[0052] Step S40: Fold the leading edge of the airbag 100 obtained in step S30 twice, so that the width of the folded airbag is the width required for the final folded airbag, such as... Figure 13 As shown.

[0053] Steps S20 to S40 serve to balance the vertical deployment speed of the airbag. Since the air intake of the gas generator 200 is located in the lower chamber bag 120, the lower chamber bag 120 opens first when the airbag 100 deploys. To prevent the upper part of the lower chamber bag 120 from deploying faster than the lower part, resulting in uneven deployment and excessive impact on surrounding components such as the cover and seat foam, the upper chamber bag 110 is rolled up, and the lower chamber bag 120 is internally folded. Furthermore, when deploying, the upper chamber bag 110 faces the driver's side, which facilitates the upper chamber bag 110 to quickly reach its position and prevents it from drifting towards the passenger side during deployment, causing instability.

[0054] Step S50: The air bag 100 obtained by folding in step S40 is folded multiple times, such as... Figure 14 As shown.

[0055] In step S60, the airbag 100, folded in step S50, is folded once (Z-fold) to achieve a folding trend where the overall unfolding direction of the airbag is towards the passenger side. Figure 15 As shown.

[0056] The purpose of steps S50 and S60 is to ensure that the airbag deploys towards the passenger side, reducing the impact on the occupant and preventing the airbag from becoming unstable and tipping over after striking the occupant. Using a folding-based deployment method ensures a smooth deployment process with controllable speed and directional stability.

[0057] Step S70: A wrapping cloth is placed around the outer periphery of the air bag 100 obtained by folding in step S60, and then thermoforming is performed, such as... Figure 16 As shown.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A dual-chamber side-mounted distal airbag structure for automobiles, installed within the side portion of the driver's seat, comprising an airbag and a gas generator, wherein the gas generator inflates the airbag with gas upon a side collision, causing the airbag to rapidly deploy and position itself between the driver's and passenger's seats; characterized in that, The air bag includes an upper chamber bag and a lower chamber bag arranged vertically, the upper chamber bag and the lower chamber bag are connected and at least one air guiding channel is formed at the connection point; At least one upper vent is provided at the connection position between the upper and lower vents, and at least one lower vent is provided at the connection position between the lower and upper vents. The upper and lower vents are connected by sewing, and during sewing, each upper vent of the upper vent is connected to each lower vent of the lower vent. The connection between the upper and lower vents forms the air guiding channel.

2. The dual-chamber side distal automotive airbag structure as described in claim 1, characterized in that, The volume of the lower cavity bag is larger than the volume of the upper cavity bag.

3. The dual-chamber side distal automotive airbag structure as described in claim 1, characterized in that, The upper cavity bag, when deployed, covers the following areas: upwards to the highest point of the occupant's head, forwards to the foremost position where the occupant's torso can move after a lateral collision, and backwards to the position where the occupant's torso can move as far back as possible when seated; the lower cavity bag, when deployed, covers the following areas: downwards to the occupant's pelvis, forwards to the foremost position where the occupant's torso can move after a lateral collision, backwards to the position where the occupant's torso can move as far back as possible when seated, and upwards to the occupant's shoulders or chest.

4. The dual-chamber side distal automotive airbag structure as described in claim 3, characterized in that, The angle between the upper and lower cavity bags after unfolding is greater than 90° and less than 180°.

5. The dual-chamber side distal automotive airbag structure as described in claim 4, characterized in that, The angle between the upper and lower cavity bags after they are unfolded is 135°.

6. The dual-chamber side distal automotive airbag structure as described in claim 1, characterized in that, The upper cavity bag body is formed by folding a piece of upper cavity bag body cut piece in half and sewing it along the periphery; or, it is formed by sewing two symmetrically arranged pieces of upper cavity bag body cut pieces along the periphery; or, it is formed by folding a piece of upper cavity bag body cut piece in half and sewing it with a piece of top surface bag body cut piece along the periphery to form a three-dimensional shape in the form of a triangular prism.

7. The dual-chamber side distal automotive airbag structure as described in claim 6, characterized in that, The upper cavity bag body is provided with an upper cavity pull strap for controlling the volume and posture of the upper cavity bag body.

8. The dual-chamber side distal automotive airbag structure as described in claim 1, characterized in that, The lower cavity bag is formed by folding a butterfly-shaped lower cavity bag piece in half and sewing it along the periphery; or, it is formed by sewing symmetrically arranged left and right lower cavity bag pieces along the periphery.

9. The dual-chamber side distal automotive airbag structure as described in claim 1, characterized in that, An air inlet channel is formed on the side of the lower cavity bag body. The gas generator has a cylindrical structure, and its outlet end is inserted into the air inlet channel through the opening of the air inlet channel. The gas generator is sealed and fixed in the air inlet channel of the lower cavity bag body by connecting fasteners.

10. The dual-chamber side distal automotive airbag structure as described in claim 9, characterized in that, The connecting fasteners include connecting brackets, clamps, and bolts.

11. The dual-chamber side distal automotive airbag structure as described in claim 9, characterized in that, The lower cavity bag body is provided with a root strap near the gas generator for mounting on the gas generator and stabilizing the gas bag.

12. The dual-chamber side distal automotive airbag structure as described in claim 9, characterized in that, The lower cavity bag is provided with a diagonal pull strap on its side to allow the lower cavity bag to unfold upright without tilting towards the passenger side.

13. The dual-chamber side distal automotive airbag structure as described in claim 8, characterized in that, The lower cavity bag is equipped with a lower cavity pull strap for controlling the volume and posture of the lower cavity bag.

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