Seat integrated split interlocking airbag

Abstract

The utility model belongs to the field of safety air bag, specifically discloses a seat integrated split mutual lock air bag. It includes the left air bag and right air bag of arrangement in seat both sides, every air bag includes the main cavity and auxiliary cavity that intercommunication, auxiliary cavity is located in the front end inboard of main cavity and is communicated with main cavity through a plurality of air holes, and the bag piece on the outside of main cavity is uniformly distributed with a plurality of through belt buckle near the edge of the front half and is provided with first outer pull belt through a plurality of through belt buckle, and the both ends of first outer pull belt are fixed on seat framework, and are used for limiting the unfolding position of every air bag, the unfolding length of left air bag along the longitudinal direction of vehicle is less than right air bag, makes the auxiliary cavity of left and right air bag after unfolding in front of the passenger mutual staggered lap joint, realizes the embrace protection to the passenger. The air bag can realize the embrace protection to the passenger, realizes the powerful constraint to the passenger torso, prevents the passenger from throwing forward in the collision, thereby realizes the all -round protection to the head, neck and torso of the passenger.

Description

Technical Field

[0001] This utility model relates to a safety airbag, and more particularly to a seat-integrated split interlocking airbag. Background Technology

[0002] With the popularization of autonomous driving technology and the expansion of intelligent cockpit scenarios, future vehicles will face more complex occupant posture management needs. In L3-L5 level autonomous driving modes, seat forms are evolving from fixed structures to dynamic and scenario-based designs, such as large-angle reclining (zero-gravity posture), 360° rotation, and long-distance sliding, allowing occupants to sit in unconventional postures such as lying on their side, leaning back, or even facing away from the driver. Traditional restraint systems (seat belts + airbags) are developed based on an upright sitting posture. When occupants are in a non-standard posture with an inclination angle exceeding 30°, the locking effectiveness of the seat belt decreases by more than 40%, and the airbag deployment angle is misaligned with the human body contact area, resulting in a significant increase in the risk of head and neck injuries.

[0003] Meanwhile, vehicle electrification is driving innovation in seat structures, such as Magna's Stow'N Go folding and hiding seats and Tesla's rotating chassis. These designs make it difficult for traditional fixed airbag modules to adapt to dynamic seat trajectories. Research shows that when the seat sliding distance exceeds 500mm or the rotation angle is greater than 90°, conventional side airbags cover less than 60% of the occupant's torso. Furthermore, multimodal seat combinations in shared mobility scenarios (such as mixed forward / rear-facing seats) further render the pre-collision response logic of existing restraint systems ineffective. Industry data shows that occupants in non-standard seating positions have a 2.3 times higher rate of serious injury in collisions than those in standard seating positions, highlighting the urgent need to overcome the technical bottlenecks of traditional restraint architectures.

[0004] Therefore, there is an urgent need for a constraint system product that can adapt to a wider range of in-vehicle scenarios. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a seat-integrated split interlocking airbag that, when deployed, can form a cross-shaped protective ring on the left and right sides in front of the occupant, providing all-round protection for the occupant.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A seat-integrated split interlocking airbag includes a left airbag and a right airbag arranged on both sides of the seat. Each airbag includes a main chamber and a secondary chamber that are interconnected. The secondary chamber is located inside the front end of the main chamber and is connected to the main chamber through multiple vent holes. Multiple strap buckles are evenly distributed on the outer side of the main chamber near the front edge, and a first outer pull strap is threaded through the multiple strap buckles. The two ends of the first outer pull strap are fixed to the seat frame to limit the deployment position of each airbag. The left airbag has a shorter unfolded length than the right airbag along the longitudinal direction of the vehicle, so that the secondary chambers of the left and right airbags overlap each other in a staggered manner in front of the occupants after unfolding, thus achieving a wraparound protection for the occupants.

[0007] As a further preferred embodiment, an outer pull tab is connected between the inner bag panels of the main chamber and the secondary chamber of each air bag to limit the main chamber and the secondary chamber from approaching a vertical state after deployment.

[0008] As a further preferred embodiment, an inner pull tab is provided in the main cavity and the secondary cavity of each air bag, and the inner pull tab is connected between the two side bag pieces of the main cavity and the secondary cavity, so as to limit the unfolded thickness of the main cavity and the secondary cavity.

[0009] As a further preferred embodiment, the main cavity and the secondary cavity of the left air bag each have two inner pull tabs, which are arranged in parallel to each other; the main cavity of the right air bag has three inner pull tabs, and the secondary cavity has two inner pull tabs, which are arranged in parallel to each other.

[0010] As a further preferred option, Velcro is provided on the opposite surfaces of the sub-cavities of the left and right air bags, so that the sub-cavities of the left and right air bags can automatically adhere to each other after overlapping.

[0011] As a further preferred option, multiple strap buckles are evenly distributed on the outer side of the secondary chamber of the left and right air bags near the front edge, and a second outer pull strap is threaded through them, which is used to tighten the secondary chamber after unfolding, so as to tightly restrain the left and right air bags to the upper body of the occupant.

[0012] As a further preferred embodiment, the main cavity and the secondary cavity of the left and right air bags are respectively folded and sewn together along the center line. An air guide bag is provided in the main cavity of the left and right air bags at the folded part along the center line to facilitate the installation of a gas generator and the introduction of gas into the main cavity.

[0013] The beneficial effects of this utility model are as follows: 1. With the left and right airbags arranged on both sides of the seat, the secondary chamber of each airbag is located inside the front end of the main chamber and is connected to the main chamber through multiple vents. The unfolded length of the left airbag in the longitudinal direction of the vehicle is less than that of the right airbag. This allows the secondary chambers of the left and right airbags to overlap in front of the occupant after inflation, thus forming a wraparound protection for the occupant and effectively restraining the occupant's torso, preventing the occupant from being thrown forward in a collision, thereby providing all-round protection for the occupant's head, neck and torso.

[0014] 2. Multiple strap buckles are evenly distributed on the outer side of the main cavity near the front edge, and a first outer pull strap is threaded through the multiple strap buckles. The two ends of the first outer pull strap are fixed to the seat frame, which can limit the deployment position of each airbag, effectively tighten the main cavity of the airbag and transmit the support force, so that the main cavity of the airbag acts on both sides of the occupant's upper body, restraining the occupant in a normal sitting posture on the seat back, thereby effectively protecting the occupant during a collision.

[0015] 3. Wide applicability, adaptable to different seat configurations. Whether it's a regular seat or a seat with a large angle adjustment, this airbag can provide effective coverage and protection for occupants in various situations. It also provides effective coverage and protection for occupants of different heights and weights. Not only can it protect occupants in a normal sitting position, but it can also effectively restrain the occupant's torso and stabilize the occupant's position in a side-sitting or reclining position, thus providing effective protection during a collision. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the left and right air bags after they are laid out flat in Embodiment 1 of this utility model.

[0017] Figure 2 yes Figure 1 Top view of the left and right airbags after they have been inflated and deployed.

[0018] Figure 3 yes Figure 2 A bottom view.

[0019] Figure 4 This is a schematic diagram of the structure after the left and right air bags in Example 2 are laid out flat.

[0020] In the diagram: left air bag 1, main cavity 101, secondary cavity 102, protrusion 103, air guide bag 2, vent 3, Velcro 4, inner pull tab 5, strap buckle 6, first outer pull strap 7, right air bag 8, main cavity 801, secondary cavity 802, protrusion 803, outer pull tab 9, second outer pull strap 10. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Example 1 like Figure 1-3As shown, this embodiment relates to a seat integrated split interlocking airbag, including a left airbag 1 and a right airbag 8 arranged on both sides of the seat. Each airbag includes a main cavity 101, 801 and a secondary cavity 102, 802 that are interconnected. After the main cavities 101 and 801 are deployed, they are located on the left and right sides of the occupant's chest and abdomen, providing lateral support and protection for the occupant. The secondary cavity 102 or 802 is located on the inner front end of the corresponding main cavity and is interconnected with the corresponding main cavity 101 or 801 through multiple ventilation holes 3. Multiple strap buckles 6 are evenly sewn on the outer bag panels of the main cavities 101 and 801 near the front edge, and a first outer pull strap 7 is threaded through the multiple strap buckles 6. The two ends of the first outer pull strap 7 are fixed to the seat frame when installed, which is used to limit the deployment position of each airbag.

[0023] An outer pull tab 9 is connected between the inner pocket panels of the main cavities 101, 801 and the corresponding secondary cavities 102, 802 of each air bag to limit the main and secondary cavities to a near-vertical state after deployment. An inner pull tab 5 is provided in each main cavity 101, 801 and secondary cavity 102, 802 of each air bag. The inner pull tabs 5 are sewn between the two pocket panels of the main cavities 101, 801 and secondary cavities 102, 802 to limit the deployed thickness of the main and secondary cavities. The left air bag 1 has two inner pull tabs 5 in each of its main cavity 101 and secondary cavity 102, arranged parallel to each other. The right air bag 8 has three inner pull tabs 5 in its main cavity 801 and two inner pull tabs 5 in its secondary cavity 802, arranged parallel to each other.

[0024] The main cavity and auxiliary cavity of the left air bag 1 and the right air bag 8 are each formed by folding and sewing a bag piece along the center line. An air guide bag 2 is provided in the folded part of the center line in the main cavity 101 and 801 of the left and right air bags. The air guide bag 2 is also formed by folding a bag piece along the center line and sewing the upper and lower edges together, so as to facilitate the installation of the gas generator and the introduction of gas into the main cavity 101 and 801.

[0025] The left airbag 1 has a smaller unfolded length and volume than the right airbag 8 along the longitudinal direction of the vehicle. This allows the secondary cavities 102 and 802 of the left and right airbags to overlap and stagger in front of the occupant after unfolding, providing circumferential protection. Each airbag's main cavity 101 and 801 has protrusions 103 and 803 at its upper end for protecting the occupant's head from both sides.

[0026] Velcro 4 is sewn onto the opposite surfaces of the sub-cavities 102 and 802 of the left and right air bags, so that the sub-cavities of the left and right air bags can automatically adhere to each other after overlapping.

[0027] During installation, gas generators are installed in the air guide bags 2 of the left air bag 1 and the right air bag 8, respectively, and fixed to both sides of the seat frame by generator brackets and bolts. The two ends of the first outer pull strap 7 are fixed to the upper and lower ends of both sides of the seat frame by screws. The left air bag 1 and the right air bag 8 are installed on both sides of the seat by folding and turning.

[0028] During vehicle operation, the vehicle controller monitors the system and triggers a signal to the gas generator upon the occurrence of a collision. During the collision, the airbag rapidly inflates, deploying through the main chambers 101 and 801 to the left and right sides of the occupant's chest and abdomen, providing lateral support and protection. Secured to the seat frame by the first external straps 7, each airbag's main chamber 101 and 801 is effectively tightened and the supporting force is transmitted. This allows the main chambers of the airbags to act on the occupant's upper torso, restraining them in a normal sitting posture against the seat back, thus effectively protecting the occupant during a collision. Simultaneously, the secondary chambers 102 and 802, after deployment, overlap and interlock in front of the occupant, then are fastened together with Velcro 4, forming a crisscrossing protective ring in front of the occupant. This maintains internal pressure throughout the collision, providing strong restraint to the occupant's torso and preventing forward ejection during the impact, thus providing comprehensive protection for the occupant's head, neck, and torso.

[0029] Example 2 like Figure 4 As shown, this embodiment involves a seat integrated split interlocking airbag, with a basic structure similar to that of Embodiment 1, which will not be described again in this embodiment. The difference is that multiple strap buckles 6 are evenly sewn on the outer pocket pieces of the sub-cavities 102 and 802 of the left airbag 1 and the right airbag 8 near the front edge, and a second outer pull strap 10 is threaded through them. The second outer pull strap 10 and the first outer pull strap 7 on the same side are fixed to the upper and lower ends of both sides of the seat frame by screws. This is used to tighten the sub-cavities after unfolding, and to tightly restrain the left and right airbags to the upper body of the occupant, thereby replacing the Velcro of Embodiment 1.

[0030] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A seat-integrated split interlocking airbag, characterized in that: It includes a left airbag and a right airbag arranged on both sides of the seat. Each airbag includes a main chamber and a secondary chamber that are interconnected. The secondary chamber is located inside the front end of the main chamber and is connected to the main chamber through multiple vent holes. Multiple strap buckles are evenly distributed on the outer side of the main chamber near the front edge, and a first outer pull strap is threaded through the multiple strap buckles. The two ends of the first outer pull strap are fixed to the seat frame to limit the deployment position of each airbag. The left airbag has a shorter unfolded length than the right airbag along the longitudinal direction of the vehicle, so that the secondary chambers of the left and right airbags overlap each other in a staggered manner in front of the occupants after unfolding, thus achieving a wraparound protection for the occupants.

2. The seat integrated split interlocking airbag according to claim 1, characterized in that: in Each airbag has an outer pull tab connecting the inner side panels of the main and secondary chambers to prevent the main and secondary chambers from approaching a vertical position after deployment.

3. A seat integrated split interlocking airbag according to claim 1 or 2, characterized in that: in Each air bag has an inner pull tab inside its main chamber and secondary chamber. The inner pull tab is connected between the two side panels of the main chamber and secondary chamber to limit the unfolded thickness of the main chamber and secondary chamber.

4. The seat integrated split interlocking airbag according to claim 3, characterized in that: The left air bag has two inner pull tabs in its main cavity and two inner pull tabs in its secondary cavity, which are arranged in parallel to each other. The right air bag has three inner pull tabs in its main cavity and two inner pull tabs in its secondary cavity, which are arranged in parallel to each other.

5. A seat-integrated split interlocking airbag according to claim 1 or 4, characterized in that: Velcro straps are provided on the opposite surfaces of the secondary cavities of the left and right air bags, so that the secondary cavities of the left and right air bags can automatically stick together after overlapping.

6. A seat integrated split interlocking airbag according to claim 1 or 4, characterized in that: Multiple strap buckles are evenly distributed on the outer side of the auxiliary chamber of the left and right air bags near the front edge, and a second outer pull strap is threaded through them. This is used to tighten the auxiliary chamber after unfolding, so as to tightly restrain the left and right air bags to the upper body of the occupant.

7. A seat-integrated split interlocking airbag according to claim 1 or 4, characterized in that: The main cavity and auxiliary cavity of the left and right air bags are respectively folded and sewn together along the center line. A gas guide bag is provided in the folded part of the center line in the main cavity of the left and right air bags to facilitate the installation of the gas generator and the introduction of gas into the main cavity.

8. A seat integrated split interlocking airbag according to claim 7, characterized in that: Each airbag has a protrusion at the top of its main cavity to protect the occupant's head from both sides.

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