A car passenger seat airbag

Abstract

The application discloses a kind of automobile co-pilot seat air bag of safety air bag, belong to automobile passive safety system technical field.It includes a pair of side bag piece, its formation the side of air bag along the side of two sides in car width direction;And banded main bag piece, it is configured in the center of air bag and the edge of the pair of side bag piece is connected each other;Sharp angle part is equipped at the front end of side bag piece, for making air bag form a wedge-shaped tip after unfolding;Its characterized by: the main bag piece and side bag piece are mutually sewed by inner seam edge located in air bag interior respectively;Reinforcing piece is respectively equipped between the front end of side bag piece and main bag piece, reinforcing piece is long strip and covers the two sides of the wedge-shaped tip, for providing sufficient transverse support strength.This air bag simple structure can simplify production process, improve production efficiency, and also can provide sufficient transverse support strength to maintain self-standing posture.

Description

Technical Field

[0001] This invention belongs to the field of automotive passive safety system technology, specifically relating to a passenger-side airbag for automobiles. Background Technology

[0002] Currently, the passenger-side airbag (PAB) in automobiles is typically housed within the dashboard. In the event of a collision, the airbag cushion needs to inflate rapidly forward of the vehicle and towards the occupant. To achieve effective restraint, the front end of the airbag cushion usually needs to form a wedge-shaped structure, inserting into the gap between the dashboard and the windshield to maintain a stable, upright posture.

[0003] Prior art, disclosed in CN115697782A, describes a passenger-side airbag device. To achieve this wedge-shaped structure and prevent the front end from curling up, an outer seam allowance is typically provided at the very front of the airbag. This involves extending the two ends of the main panel forward and overlapping them vertically to form the outer seam allowance. However, this approach has significant drawbacks: 1. The process requires internal sewing and turning the garment inside out before the front end is sewn a second time. This process is complex, has low production efficiency, and is prone to creating sewing dead corners.

[0004] 2. The outer seam is exposed outside the airbag, which may scratch the surrounding interior parts when the airbag is deployed at high speed, affecting the deployment posture and consistency.

[0005] 3. The outer seam edge, which relies solely on overlapping fabric, has limited rigidity and may still curl up at the front end under extreme pressure. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a passenger-side airbag for automobiles that can simplify the production process, improve production efficiency, and provide sufficient lateral support strength to maintain an upright posture.

[0007] The technical solution of the present invention is as follows: A passenger-side airbag for automobiles includes a pair of side pockets forming the sides of the airbag along the width of the vehicle; and a strip-shaped main pocket disposed in the center of the airbag and connecting the edges of the pair of side pockets to each other; and an acute angle portion provided at the front end of the side pockets to form a wedge-shaped tip when the airbag is deployed. Its special feature is that the main bag piece and the side bag piece are sewn together by the inner seam edge located inside the air bag; a reinforcing piece is provided between the front end of the side bag piece and the main bag piece. The reinforcing piece is long and strip-shaped and covers both sides of the wedge tip to provide sufficient lateral support strength.

[0008] As a further preferred option, the reinforcing sheet is made of high-strength nylon 66 fabric.

[0009] As a further preferred embodiment, the length of the reinforcing sheet is 100-300mm and the width is 40-60mm.

[0010] As a further preferred option, multiple weakening lines are provided on the reinforcing sheet along its length to facilitate the folding and storage of the airbag.

[0011] As a further preferred embodiment, the acute angle of the front end of the side pocket piece is 20-45 degrees.

[0012] As a further preferred option, generator mounting holes are symmetrically provided on the main bag sheet near both ends for mounting gas generators and for use after the gas bag is sewn and turned over.

[0013] The beneficial effects of this invention are: 1. Since the main bag piece and the side bag piece are sewn together by the inner seam inside the air bag, the structure is simple. This not only simplifies the production process and improves production efficiency, but also allows the air bag to be completed by one sewing and one flipping, without the need for secondary processing of the front end of the air bag, thus reducing the defect rate. Moreover, the inner seam is completely hidden inside the air bag, eliminating the risk of the outer seam getting caught on surrounding parts.

[0014] 2. Because there are reinforcing plates between the front end of the side bag and the main bag, the reinforcing plates are long strips and cover both sides of the wedge tip. The reinforcing plates can provide sufficient lateral support strength, so that the front end of the air bag after unfolding can be inserted into the gap between the dashboard and the windshield like a "hard wedge". The self-standing posture is more stable than the traditional outer seam edge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is an exploded view of the present invention.

[0017] Figure 3 This is a schematic diagram of the installation of the reinforcing sheet and the main bag sheet.

[0018] Figure 4 This is a schematic diagram of the installed version of the present invention.

[0019] In the diagram: main bag piece 101, side bag piece 102, inner seam edge 103, acute angle 104, reinforcing piece 105, vent hole 106, generator mounting hole 107, weakening line 108. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-4 As shown, the present invention relates to a passenger-side airbag for automobiles, comprising a pair of side pockets 102 forming the sides of the airbag along the width of the vehicle; and a strip-shaped main pocket 101 disposed in the center of the airbag and connecting the edges of the pair of side pockets 102 to each other; a V-shaped acute angle portion 104 is provided at the front end of the side pocket 102 for forming a wedge-shaped tip after the airbag is deployed, so as to insert into the gap between the dashboard and the windshield.

[0022] The main bag panel 101 and the side bag panel 102 are sewn together with sewing thread through the overlapping inner seam edge 103 located inside the air bag; a reinforcing piece 105 is sewn between the front end of the side bag panel 102 and the main bag panel 101, the reinforcing piece 105 is long and strip-shaped and covers both sides of the wedge tip to provide sufficient lateral support strength.

[0023] The reinforcing piece 105 is made of high-strength nylon 66 fabric with a strength ≥500N / 50mm. The length of the reinforcing piece 105 is 100-300mm and the width is 40-60mm. Multiple weakening lines 108 are processed along the length of the reinforcing piece 105 to facilitate the folding and storage of the airbag.

[0024] The acute angle 104 at the front end of the side bag 102 has an included angle of 20-45 degrees, preferably 25 degrees, and an exhaust hole 106 is provided on the side bag 102. Two generator mounting holes 107 are symmetrically provided on the main bag 101 near both ends for mounting gas generators and for use after the gas bag is sewn and turned over.

[0025] The specific steps during processing are as follows: Step 1: Using laser cutting technology, the side pocket piece 102, main pocket piece 101 and reinforcing piece 105 are precisely cut to ensure the dimensional accuracy of each component and avoid rough edges from affecting the sewing quality.

[0026] Step 2: Place the reinforcing piece 105 on the inner edge of the front end of the main bag piece 101, align the positioning points, and use positioning adhesive to temporarily fix it in a dotted manner to ensure that the reinforcing piece 105 is accurately positioned and to avoid displacement during sewing.

[0027] Step 3: Align the edge of the main bag piece 101 with the edge of the side bag piece 102, ensuring that the reinforcing piece 105 is sandwiched between them. Use an industrial sewing machine to perform peripheral chain stitching to form an inner seam allowance 103 around the entire perimeter, so as to achieve simultaneous fixation of the three layers of the main bag piece 101, side bag piece 102, and reinforcing piece 105 without the need for secondary sewing.

[0028] Step 4: Turn the sewn airbag over completely through the generator mounting hole at the rear of the main bag piece 101. At this point, all seams and reinforcing pieces 105 are hidden inside the airbag, forming a firm wedge-shaped edge at the front end to meet the support requirements for self-standing posture.

[0029] Although the embodiments of the present invention 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 the present invention. 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, the present invention is not limited to the specific details.

Claims

1. A passenger-side airbag for automobiles, comprising a pair of side pockets forming the sides of the airbag along the width of the vehicle; and a strip-shaped main pocket disposed in the center of the airbag and connecting the edges of the pair of side pockets to each other; wherein the front end of the side pockets is provided with an acute angle portion for forming a wedge-shaped tip when the airbag is deployed; Its characteristics are: The main bag panel and the side bag panel are sewn together by the inner seam located inside the air bag; a reinforcing piece is provided between the front end of the side bag panel and the main bag panel. The reinforcing piece is long and strip-shaped and covers both sides of the wedge-shaped tip to provide sufficient lateral support strength.

2. The passenger-side airbag for automobiles according to claim 1, characterized in that: The reinforcing sheet is made of high-strength nylon 66 fabric.

3. A passenger-side airbag for automobiles according to claim 1 or 2, characterized in that: Multiple weakening lines are provided along the length of the reinforcing plate to facilitate the folding and storage of the airbag.

4. The passenger-side airbag for automobiles according to claim 3, characterized in that: The reinforcing sheet has a length of 100-300mm and a width of 40-60mm.

5. The passenger-side airbag for automobiles according to claim 1, characterized in that: The acute angle at the front end of the side pocket panel is 20-45 degrees.

6. The passenger-side airbag for automobiles according to claim 1, characterized in that: The main bag sheet has symmetrical generator mounting holes near both ends for mounting gas generators and for use after the gas bag is sewn and turned over.

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