Side airbag of automobile
By adopting Z-shaped folding and deflector designs, the problem of excessive impact of the car side airbag on passengers when bounces off is solved, achieving a safer and more space-efficient airbag design.
Patent Information
- Application Number
- CN202420698827.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The existing side airbags of the car are prone to excessive impact on the front seat passengers when they bounce, resulting in safety hazards.
The Z-shaped folded airbag design makes the airbag expansion route closer to the straight line, reducing the probability of impact on the shoulders of front passengers, and ensuring that the airbag is deployed in a straight line along the folding direction through the design of U-shaped deflector and compression belt.
It effectively reduces the impact force on the passenger's shoulders when the airbag is bounced off, improves the safety performance of the side airbags, and is smaller in design and easier to place in the seat, increasing the seat space.
Smart Images
Figure CN222611108U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an automobile air bag, more specifically, it relates to a side air bag of an automobile. Background Art
[0002] The car side airbag is installed on the side of the seat to reduce the damage caused by side impact. Many manufacturers' models are equipped with side airbags for the two front seats and rear side airbags. After a collision, especially a side impact, it can reduce the body injuries such as fractures caused by the direct collision of the arms and ribs of the rear passengers near the door with the door panels. Since the front passengers will also collide with each other when the car collides, one of the existing side airbags is a central side airbag, which is located in the middle of the main driver and the co-driver. When triggered, the airbag at this position separates the sides of the main driver and the co-driver, and provides lateral buffering protection for the main and co-driver.
[0003] The airbag pops out at a speed of approximately 320km / h, and the impact force generated is approximately 180kg. Therefore, if the sitting posture is not correct, the airbag will cause great harm to the human body when it pops out.
[0004] like Figure 1 As shown, the existing side airbag 3 at the central position adopts a rotary rolling method when rolling up; when the side airbag 3 is ejected, the innermost end of the airbag 3 will pop outward along the rolling path. For the side airbag 3 between the driver and passenger seats of the front seats, no matter how the rolled-up side airbag 3 is placed, it is easy to have a tendency to impact and bounce toward the user on one side when it is ejected. Because the impact force of the airbag 3 when it is ejected is relatively large, if the user's body is tilted to the side and the seat belt is fastened in time, the user's shoulder will be excessively impacted, leaving a safety hazard for the user on the opposite side of the side airbag 3. Utility Model Content
[0005] The utility model aims to provide a side airbag for a car, which adopts a Z-shaped folded airbag to make the airbag expansion path closer to a straight line, reduce the probability of the side airbag of the front seat hitting the user's shoulder when it is opened, and improve the safety performance of the side airbag.
[0006] The above technical objectives of the utility model are achieved through the following technical solutions:
[0007] A side airbag of an automobile comprises a gas generator, the gas outlet of the gas generator is connected with an airbag assembly, and the characteristic is that the airbag assembly comprises a Z-shaped folded airbag.
[0008] Preferably, an adapter bracket is fixed to the outer wall of the gas generator, and a U-shaped guide plate is fixed to half the gas outlet end of the gas generator, the opening of the U-shaped guide plate faces the sealing end of the airbag, and the sealing end is the end away from the gas generator.
[0009] Preferably, two compression belts are knitted and fixed on both sides of the airbag, which compress the Z-shaped folds of the airbag, and the two compression belts are symmetrically arranged on both sides of the airbag; one end of the compression belt fixes the inflating end of the airbag, and the other end of the compression belt is fixed to the sealing end of the airbag.
[0010] Preferably, the compression belt is provided with a first knitted thread, a second knitted thread and a third knitted thread along the length direction; the first knitted thread, the second knitted thread and the third knitted thread are arranged from far to near the gas generator; the first knitted thread, the second knitted thread and the third knitted thread are all fixed to the outer wall of the airbag.
[0011] Preferably, the first knitting thread has one strand, the second knitting thread has two strands, and the third knitting thread has three strands.
[0012] Preferably, the Z-fold thickness of the airbag is less than 30 mm.
[0013] In summary, the utility model has the following beneficial effects:
[0014] (1) By folding the airbag in a Z-shape, the airbag can be deployed faster after the generator is detonated, which can provide more direct and better protection for occupants in a car collision. The airbag of this design can be used between the driver and the co-driver, or on the side of the driver and the co-driver close to the door.
[0015] (2) The thickness dimension of the Z-type folding method can be less than 30 mm, which is smaller than the traditional folding method and easier to place in the seat, leaving more space for the seat.
[0016] (3) The U-shaped guide plate changes the direction of the airflow at the opening of the gas generator so that the airflow flows toward the sealed end of the airbag, making the airflow direction consistent with the extension direction of the airbag, which helps the airbag to unfold linearly along the folding direction.
[0017] (4) The compression belts are symmetrically arranged on both sides of the airbag, which is conducive to the airbag to be evenly deployed on both sides after receiving air pressure, and helps the airbag to be deployed linearly along the folding direction.
[0018] (5) The three strands of knitted yarn with different knitting densities make the tightening force of the compression belt on the airbag gradually increase from far to near. This design makes the sealed end of the airbag unfold first after being subjected to air pressure, followed by the middle of the airbag, and finally the air intake end of the airbag, which is the end connected to the gas generator. This design avoids the situation where the sealed end of the airbag twists and turns during unfolding due to the rapid unfolding of the airbag intake, and helps the airbag to unfold in a straight line along the folding direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The side airbag retracting structure of the front seat in the prior art;
[0020] Figure 2 is a schematic diagram of the external structure of the side airbag in the embodiment;
[0021] Figure 3 1 is a schematic diagram of the overall decomposition of the air bag in the embodiment;
[0022] Figure 4 is a schematic diagram of the connection relationship between the gas generator and the U-shaped guide plate in the embodiment;
[0023] Figure 5 is a schematic diagram of the side airbag being deployed in the embodiment;
[0024] Figure 6 Schematic diagram of the connection relationship between the compression bag and the airbag in the embodiment.
[0025] Figure 7 Schematic diagram of the positions of the three airbags in the embodiment located at the front seats.
[0026] In the figure:
[0027] 1. Gas generator;
[0028] 2. Air bag assembly; 21. Outer bag;
[0029] 3. airbag; 31. sealing end;
[0030] 4. Adapter bracket;
[0031] 5. U-shaped guide vane;
[0032] 6. Compression belt; 61. First knitting thread; 62. Second knitting thread; 63. Third knitting thread. DETAILED DESCRIPTION
[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0034] Embodiment 1, a side airbag of a car, referring to Figure 2-Figure 5 , comprising a gas generator 1, the gas generator 1 is cylindrical in shape as a whole; one end of the gas generator 1 is connected to an external circuit, and the other end of the gas generator 1 is a gas outlet;
[0035] An adapter bracket 4 is fixed to the side wall of the gas generator 1. The adapter bracket 4 is a sheet metal part. The adapter bracket 4 is provided with a connecting hole for connecting with the vehicle body.
[0036] The gas outlet of the gas generator 1 is connected to the airbag assembly 2 , and the airbag assembly 2 includes a Z-shaped folded airbag 3 .
[0037] The end of the airbag 3 close to the gas generator 1 is an air intake end, and the end of the airbag 3 far from the gas generator 1 is a sealing end 31 .
[0038] An adapter bracket 4 is fixed to the outer wall of the gas generator 1, and a U-shaped guide plate 5 is fixed to the semi-surrounding gas outlet end of the gas generator 1, and the opening of the U-shaped guide plate 5 faces the sealing end 31 of the airbag 3, and the sealing end 31 is the end away from the gas generator 1. The U-shaped guide plate 5 is located outside the airbag 3, and after the airflow passes through the compressed airbag 3 and reaches the U-shaped guide plate 5, part of the airflow in the airbag 3 is guided by the U-shaped guide plate 5 to change the airflow direction. Such a design allows the airflow to flow quickly and concentratedly toward the sealing end 31 of the airbag 3.
[0039] The airbag 3 is folded in a Z-shape, and the folded thickness is 29 mm.
[0040] Embodiment 2, a side airbag of an automobile, which is different from Embodiment 1, as shown in FIG. Figure 6 Two compression belts 6 are knitted and fixed on both sides of the airbag 3. The compression belts 6 compress the Z-shaped folds of the airbag 3. The two compression belts 6 are symmetrically arranged on both sides of the airbag 3; one end of the compression belt 6 fixes the inflation end of the airbag 3, and the other end of the compression belt 6 is fixed to the sealing end 31 of the airbag 3.
[0041] The compression belt 6 is provided with a first knitted thread 61, a second knitted thread 62 and a third knitted thread 63 along the length direction; the first knitted thread 61, the second knitted thread 62 and the third knitted thread 63 are arranged from far to near the gas generator 1; the first knitted thread 61, the second knitted thread 62 and the third knitted thread 63 are all fixed on the outer wall of the airbag 3.
[0042] The first knitting thread 61 has one strand, the second knitting thread 62 has two strands, and the third knitting thread 63 has three strands.
[0043] Embodiment 3, a side airbag of a car, referring to Figure 7 The difference between it and Example 1 or Example 2 is that there are three side airbags, one airbag 3 is located at the driver's seat near the door, another airbag 3 is located at the passenger's seat near the door, and the third airbag 3 is located between the driver and the passenger.
[0044] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A side airbag for an automobile, comprising a gas generator (1), wherein the gas outlet of the gas generator (1) is connected to an airbag assembly (2), wherein: The airbag assembly (2) includes an airbag (3) folded in a Z shape; An adapter bracket (4) is fixed to the outer wall of the gas generator (1), and a U-shaped guide plate (5) is fixed to the gas outlet end of the gas generator (1) in a semi-enclosed manner, wherein the opening of the U-shaped guide plate (5) faces the sealing end (31) of the airbag (3), and the sealing end (31) is the end away from the gas generator (1).
2. The side airbag of a vehicle according to claim 1, characterized in that: Two compression belts (6) are knitted and fixed on both sides of the airbag (3), and the compression belts (6) compress the Z-shaped folds of the airbag (3). The two compression belts (6) are symmetrically arranged on both sides of the airbag (3); One end of the compression belt (6) is fixed to the inflation end of the airbag (3), and the other end of the compression belt (6) is fixed to the sealing end (31) of the airbag (3).
3. The side airbag of a vehicle according to claim 2, characterized in that: The compression belt (6) is provided with a first knitting thread (61), a second knitting thread (62) and a third knitting thread (63) along the length direction; The first knitted thread (61), the second knitted thread (62) and the third knitted thread (63) are arranged in order from far to near the gas generator (1); The first knitted thread (61), the second knitted thread (62) and the third knitted thread (63) are all fixed to the outer wall of the airbag (3).
4. The side airbag of a vehicle according to claim 3, characterized in that: The first knitting thread (61) has one strand, the second knitting thread (62) has two strands, and the third knitting thread (63) has three strands.
5. The side airbag of a vehicle according to claim 1, characterized in that: The Z-folded thickness of the airbag (3) is less than 30 mm.