A fully wrapped airbag installed on the seat back

Abstract

A fully enveloping airbag mounted on a seatback comprises an airbag and a gas generator. The airbag has a bilaterally symmetrical structure, with two inlet channels symmetrically positioned on either side of the rear end of the airbag. Two gas generators are symmetrically fixed within the two inlet channels. A non-inflated area is sewn into the middle of the airbag near the rear end, and two lateral head protection zones and two lateral chest and abdomen protection zones are symmetrically positioned on either side of the non-inflated area. The lateral head protection zones are adjacent to the non-inflated area, while the lateral chest and abdomen protection zones are located outside the lateral head protection zones and are connected to corresponding inlet channels. A front chest and abdomen protection zone is positioned near the front end of the airbag, with the front ends of the two lateral head protection zones connected to the front chest and abdomen protection zones. Drawstrings are symmetrically attached to the airbag on either side of the front chest and abdomen protection zones. This airbag provides all-around enveloping protection for the driver or passenger in a collision, maximizing safety.

Description

Technical Field

[0001] The present invention relates to the field of automobile safety airbags, in particular to a fully wrapped safety airbag installed on a seat back. Background Art

[0002] Traditional airbag deployment requires coordination between airbag modules to protect the driver or passengers. This is particularly true during a side impact, where the head and neck of passengers are particularly vulnerable. Lateral inertia of the driver and passengers in a single collision can easily lead to a secondary head impact, causing significant damage. Furthermore, in the event of a rollover or tumble, passengers are virtually unrestrained, placing significant pressure on their survival. Consequently, a fully encapsulated airbag system integrating various airbag modules is needed, ensuring that passengers are fully enclosed in the seat during a collision, maximizing their safety. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a fully wrapped airbag installed on the seat back to provide all-round wrapping protection for the driver or passengers during a collision accident, thereby maximizing the safety of people's lives.

[0004] The technical solutions of the present invention are as follows:

[0005] A fully enclosed airbag mounted on a seat back comprises an airbag and a gas generator. The airbag is unique in that: the airbag is mounted around the frame on both sides of the seat back and the outer edge of the headrest; the airbag is bilaterally symmetrical, with two air inlet passages symmetrically provided on either side of the rear end of the airbag; and two gas generators are symmetrically fixed within the two air inlet passages; a non-inflated area is sewn in the middle of the airbag near the rear end by sewing thread, and two side head protection zones and two side chest and abdomen protection zones are symmetrically provided on either side of the non-inflated area, the side head protection zones being adjacent to the non-inflated areas, and the side chest and abdomen protection zones being located outside the side head protection zones, respectively. The side head protection zones and the side chest and abdomen protection zones located on the same side of the airbag are each connected to the corresponding air inlet passage.

[0006] A front chest and abdomen protection zone is provided in the middle of the airbag near the front end, and the front ends of the two side head protection zones are respectively connected to the front chest and abdomen protection zones, so as to introduce gas into the front chest and abdomen protection zones to wrap and cover the occupants; drawstrings are symmetrically connected on both sides of the front chest and abdomen protection zones on the airbag, which are used to connect the frames on both sides of the seat back, so as to limit the deployment shape and position of the front chest and abdomen protection zones.

[0007] As a further preference, two air guide bag sheets are symmetrically sewn on both sides of the air bag between the side head protection area and the side chest and abdomen protection area, and the side head protection area and the side chest and abdomen protection area are respectively connected to the corresponding air inlet channels through the air guide bag sheets.

[0008] As a further preference, the non-inflatable area is in an inverted T-shape, and a vent is provided on the airbag at the front end of the non-inflatable area to achieve breathing ventilation for the driver or passenger after the airbag is deployed.

[0009] As a further preference, the front chest and abdomen protection area is rectangular, and is folded under the airbag and sewn to the edge portions on both sides of the airbag to ensure that the driver or passenger is enclosed therein after unfolding, thereby providing all-round protection.

[0010] As a further preferred embodiment, a plurality of fixing pieces are sewn at the rear end edge of the airbag so that the airbag can be mounted around the frames on both sides of the seat back and the outer edge of the headrest.

[0011] As a further preference, the gas generator is fixed in the air intake channel by two clamps respectively sleeved on the outside of the air intake channel, and a bracket is also fixed on the outside of the air intake channel by the clamps to facilitate fixing the gas generator and the air intake channel.

[0012] The beneficial effects of the present invention are:

[0013] 1. Because the airbag is mounted on the frame on both sides of the seatback and the outer edge of the headrest, a non-inflated area, two symmetrically arranged side head protection zones, two side chest and abdomen protection zones, and a front chest and abdomen protection zone are sewn onto the airbag using sewing thread. The side head protection zones and side chest and abdomen protection zones on the same side of the airbag are connected to corresponding air intake channels, and the front ends of the two side head protection zones are connected to the front chest and abdomen protection zones. Therefore, after deployment, the airbag can wrap the driver or passenger's head and chest and abdomen, providing three-dimensional, all-round protection for the driver or passenger during a collision, thereby maximizing life safety.

[0014] 2. Since there are drawstrings symmetrically connected on both sides of the front chest and abdomen protection area of ​​the airbag, and the outer ends of the two drawstrings are connected to the frames on both sides of the seat back, the deployment shape and position of the front chest and abdomen protection area can be limited, which can effectively prevent the driver or passenger from rushing out of the airbag due to inertia during a collision accident, further improving the safety protection performance.

[0015] 3. Facing the future development of autonomous driving and unmanned driving, this airbag has greater assembly advantages. It is installed on the frames on both sides of the seat back and the outer edge of the headrest. It is not interfered with the internal display screen, ceiling and other configurations of the vehicle body. It takes up little space and can rotate freely with the seat. It can adapt to the development of future cars. No matter how the scene inside the car changes, as long as the driver and passengers do not leave the seat, it will provide a final safety guarantee for the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the structure of the air bag after folding of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the air bag of the present invention before folding.

[0018] Figure 3 yes Figure 2 Schematic diagram of the structure of the mid-anterior thoracic and abdominal protection zone after expansion.

[0019] Figure 4 It is a side view after the present invention is installed.

[0020] Figure 5 yes Figure 4 Left view of .

[0021] Figure 6 It is a front view of the inflated and expanded version of the present invention.

[0022] Figure 7 It is a side view of the inflated and expanded version of the present invention.

[0023] Figure 8 It is a top cross-sectional view of the present invention after inflation and expansion.

[0024] In the figure: bracket 1, clamp 2, gas generator 3, drawstring 4, fixing plate 5, air bag 6, air guide bag plate 7, frame 8, bolt 9, driver or passenger 10, air intake channel 601, side head protection area 602, non-inflatable area 603, side chest and abdomen protection area 604, front chest and abdomen protection area 605, vent 606, sewing thread 607. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] like Figures 1 to 8As shown, the present invention relates to a fully wrapped safety airbag installed on a seat back. The airbag is mounted on a frame on both sides of the seat back and the outer edge of the headrest. The airbag includes an airbag 6 and a gas generator 3. The airbag 6 is a bilaterally symmetrical structure formed by sewing two upper and lower bag pieces together with sewing thread and gluing. Two air inlet channels 601 are symmetrically sewn on both sides of the rear end of the airbag 6 by sewing thread. The gas generator 3 is symmetrically fixed in the two air inlet channels 601. A non-inflatable area 603 is sewn in the middle of the airbag 6 near the rear end. The non-inflatable area 603 is in an inverted T shape. A substantially rectangular vent 606 is provided on the airbag 6 at the front end of the non-inflatable area 603. When the airbag 6 is deployed, the vent 606 corresponds to the driver's or passenger's face, and is used to provide respiratory ventilation for the driver or passenger after the airbag 6 is deployed.

[0027] Two side head protection zones 602 and two side chest and abdomen protection zones 604 are symmetrically sewn on both sides of the non-inflated area 603 of the air bag 6. The side head protection zones 602 are adjacent to the non-inflated area 603, and the side chest and abdomen protection zones 604 are located outside the side head protection zones 602. The side head protection zones 602 and side chest and abdomen protection zones 604 located on the same side of the air bag 6 are respectively connected to the corresponding air inlet channels 601.

[0028] A front chest and abdomen protection zone 605 is sewn with sewing thread in the middle of the airbag 6 near the front end, and the front ends of the two side head protection zones 602 are gradually narrowed and respectively communicated with the front chest and abdomen protection zones 605, so as to quickly introduce gas into the front chest and abdomen protection zones 605 to wrap and cover the occupants; on the airbag 6, drawstrings 4 are symmetrically connected on both sides of the front chest and abdomen protection zones 605, which are used to connect the frames on both sides of the seat back to limit the unfolding shape and position of the front chest and abdomen protection zones 605.

[0029] Two air guide bag pieces 7 are symmetrically sewn on both sides of the air bag 6 between the side head protection area 602 and the side chest and abdomen protection area 604. The air guide bag piece 7 has an air inlet and two air outlets. The side head protection area 602 and the side chest and abdomen protection area 604 are respectively connected to the corresponding air inlet channel 601 through the air guide bag piece 7.

[0030] The front chest and abdomen protection zone 605 is rectangular and has two rounded outer corners at the front end. After being folded under the airbag 6, the front chest and abdomen protection zone 605 is sewn or seamlessly connected to the edge portions of the side head protection zones 602 on both sides of the airbag 6 through sewing threads 607, so that the front chest and abdomen protection zone 605 partially overlaps with the non-inflated zone 603 and the side head protection zones 602 on both sides to ensure that the driver or passenger is covered therein after deployment, thereby providing all-round protection.

[0031] Multiple fixing tabs 5 are sewn onto the rear edge of the airbag 6, facilitating wraparound mounting of the airbag on the seatback and headrest frames. The gas generator 3 is secured within the air intake passage 601 via two clamps 2, each secured to the outside of the passage. A bracket 1 is also secured to the outside of the passage 601 via the clamps 2, securing the gas generator 3 to the passage 601.

[0032] During installation, the airbag 6 is folded and connected to the preset mounting holes on the frame 8 on both sides of the seat back through the bracket 1 and fixed with bolts 9. The airbag is fixed with the preset connecting plates on the frame on both sides of the seat back and the outer edge of the headrest through the fixing plate 5. After installation, the airbag is fixed in an "n" shape on the frame on both sides of the seat back and the outer edge of the headrest, and is wrapped with a torn and weakened skin.

[0033] When the vehicle collides, the gas generated by the ignition of the two gas generators 3 is simultaneously filled into the two side head protection areas 602 and the side chest and abdomen protection areas 604 through the air guide bag sheet 7, so that the airbag breaks through the skin and expands forward, so that the two side head protection areas 602 are expanded on both sides of the driver or passenger 10's head, and the two side chest and abdomen protection areas 604 are expanded on both sides of the driver or passenger 10's body. At the same time, the non-inflated area 603 extends forward from above the driver's or passenger's head, and the high-pressure gas enters the front chest and abdomen protection area 605 through the two side head protection areas 602. Under the restraint of the drawstrings 4 on both sides, the front chest and abdomen protection area 605 is quickly expanded downward, thereby wrapping the driver or passenger's head and chest and abdomen, providing the driver or passenger 10 with three-dimensional all-round wrapping protection, and maximizing the guarantee of personnel safety.

[0034] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A fully enclosed airbag mounted on a seat back, comprising an airbag and a gas generator, characterized by: The airbag is mounted on the frame on both sides of the seat back and the outer edge of the headrest. The airbag has a bilaterally symmetrical structure, with two air inlet channels symmetrically located on either side of the rear end of the airbag. Two gas generators are symmetrically fixed in the two air inlet channels. A non-inflated area is sewn into the middle of the airbag near the rear end using sewing thread, and two side head protection areas and two side chest and abdomen protection areas are symmetrically located on either side of the non-inflated area. The side head protection areas are adjacent to the non-inflated areas, and the side chest and abdomen protection areas are located outside the side head protection areas. The side head protection areas and side chest and abdomen protection areas on the same side of the airbag are connected to the corresponding air inlet channels. A front chest and abdomen protection zone is located near the front of the airbag in the middle. The front ends of the two side head protection zones are connected to the front chest and abdomen protection zones, respectively, to direct gas into the front chest and abdomen protection zones to wrap and cover the occupant. Drawstrings are symmetrically connected to the airbag on both sides of the front chest and abdomen protection zones to connect to the frame on both sides of the seat back, limiting the deployment shape and position of the front chest and abdomen protection zones. Two air guide bag sheets are symmetrically sewn on both sides of the air bag between the side head protection area and the side chest and abdomen protection area. The side head protection area and the side chest and abdomen protection area are respectively connected to the corresponding air inlet channels through the air guide bag sheets; The non-inflatable area is in an inverted T-shape, and a vent is provided on the airbag at the front end of the non-inflatable area for breathing ventilation of the driver or passenger after the airbag is deployed; The front chest and abdomen protection zone is rectangular and is folded under the air bag and sewn to the edge portions on both sides of the air bag to ensure that the driver or passenger is covered therein after being unfolded.

2. The fully wrapped airbag installed on a seat back according to claim 1, characterized in that: A plurality of fixing pieces are sewn at the rear end edge of the airbag so that the airbag can be mounted around the frames on both sides of the seat back and the outer edge of the headrest.

3. A fully wrapped airbag installed on a seat back according to claim 1 or 2, characterized in that: The gas generator is fixed in the air intake channel through two clamps sleeved on the outside of the air intake channel. A bracket is also fixed on the outside of the air intake channel through the clamps to facilitate fixing the gas generator and the air intake channel.

Images