Safety air bag device for protecting passengers in back row and control method of safety air bag device

Abstract

The safety air bag device for protecting the rear row passengers comprises an air bag structure arranged on a front row seat of an automobile, the air bag structure is located on the side, close to the rear row of the automobile, of the front row seat of the automobile, and on a seven-seat SUV, the air bag structure is located on the side, close to a third row of seats, of a second row of seats. The safety air bag device can be quickly ejected out to fill the space between the third row of passengers and the second row of seats, effective protection is provided for the legs and the heads of the third row of passengers, and threat and harm to the rear row of passengers caused by collision are reduced. The invention further provides a control method of the safety air bag device for protecting the rear row of passengers. The safety air bag device for protecting the back row passengers and the control method of the safety air bag device can be suitable for seven-seat SUV models, the riding safety can be effectively improved, threats and injuries to the back row passengers can be effectively reduced when the automobile has a head-on collision, the safety of the automobile is improved, and the safety of the automobile is improved. And the safety of the whole vehicle can be effectively improved.

Description

Technical Field

[0001] The invention belongs to the field of automobile collision safety, and in particular relates to a safety airbag device for protecting rear passengers and a control method thereof. Background Art

[0002] With the continuous development of the automotive industry, automobile safety technology has made great progress, from the simple seat belts in the mid-20th century to today's advanced airbag systems. As an indispensable part of modern cars, airbags have greatly improved the level of protection for passengers in the event of a collision. Airbags expand rapidly when a vehicle collides, forming a soft "barrier" that provides a buffer between the occupants and the potential impact point, significantly reducing collision damage.

[0003] At present, with the changes in family structure and the increase in travel needs, seven-seater SUV models have gradually become the first choice for families with multiple members. Seven-seater SUV models provide riding space for third-row passengers, but after a head-on collision, the third-row passengers lack other protection except seat belts. The interval space between the second-row seats and the third-row seats is limited, and the seat belts cannot provide effective cushioning, resulting in excessive body displacement of the third-row passengers. The legs and heads of the third-row passengers are easily impacted and contacted with the second-row tables and chairs, which can easily cause serious injuries to the legs and heads of the third-row passengers, affecting the overall vehicle safety of the seven-seater SUV model.

[0004] Therefore, in order to improve or solve at least one of the above problems, an airbag device and a control method thereof are provided, which can be applicable to seven-seater SUV models, can effectively improve the safety of passengers, can effectively reduce the threat and injury to rear passengers in the event of a head-on collision, and can effectively improve the safety of the entire vehicle. Summary of the invention

[0005] The present invention is made to solve the above problems, and aims to provide an airbag device for protecting rear passengers and a control method thereof, which can be applicable to seven-seat SUV models, can effectively improve the safety of passengers, can effectively reduce the threat and injury to rear passengers when a frontal collision occurs in the car, and can effectively improve the safety of the entire vehicle. In order to achieve the above objectives, the technical solutions adopted by the present invention are:

[0006] The invention provides a safety airbag device for protecting rear passengers, which has the following characteristics: the airbag structure is arranged on the front seat of the car, and the airbag structure is located on the side of the front seat of the car close to the rear seat of the car.

[0007] The airbag device for protecting rear passengers provided by the present invention may also have the following characteristics: the airbag structure includes a gas generator and an airbag bag connected to the gas generator, and the gas generator is arranged on the front seats of the car.

[0008] The airbag device for protecting rear passengers provided by the present invention may also have the following feature: the airbag structure further includes a mounting bracket, the mounting bracket is disposed on the front seat of the automobile, and the mounting bracket is connected to the gas generator.

[0009] The airbag device for protecting rear passengers provided by the present invention may also have the feature that the gas generator is arranged on the mounting bracket by means of a fastening strap.

[0010] The airbag device for protecting rear passengers provided by the present invention may also have the following feature: a fixing plate is provided on the airbag bag, the fixing plate is arranged on the airbag bag, and the fixing plate is located on one side of the mounting bracket.

[0011] The airbag device for protecting rear passengers provided by the present invention may also have the following feature: a sealing seam is provided on the airbag cloth bag, and the sealing seam is in an inverted "U" shape.

[0012] The airbag device for protecting rear passengers provided by the present invention may also have the feature that the gas generator is connected to an igniter.

[0013] The airbag device for protecting rear passengers provided by the present invention may also have such a feature that the igniter is connected to an ECU controller.

[0014] The airbag device for protecting rear passengers provided by the present invention may also have such a feature that the ECU controller is connected to a collision sensor.

[0015] The present invention also provides a control method for the airbag device for protecting rear passengers according to the above-mentioned method, which has the following characteristics: when a frontal collision occurs, the airbag structure pops out to fill the front seats and the rear seats of the car.

[0016] The technical effect of the present invention is as follows: the airbag device for protecting rear passengers provided by the present invention includes an airbag structure arranged on the front seats of the car, and the airbag structure is located on the side of the front seats of the car close to the rear seats of the car. In a seven-seat SUV model, the airbag structure is located on the side of the second row seats close to the third row seats. When a head-on collision occurs in the car, the airbag structure can pop out quickly to fill the space between the third row seats and the second row seats, providing effective protection for the legs and heads of the third row passengers, and reducing the threat and damage of the collision to the rear passengers. The present invention also provides a control method for the airbag device for protecting rear passengers, which is used to ensure that the airbag structure can pop out smoothly during a collision.

[0017] Therefore, the airbag device for protecting rear passengers and the control method thereof provided by the present invention can be applicable to seven-seater SUV models, can effectively improve the safety of riding, can effectively reduce the threat and damage to rear passengers in the event of a head-on collision of the car, and can effectively improve the safety of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] This specification includes the following drawings, which show the following contents:

[0019] Figure 1 is a schematic structural diagram of an airbag device for protecting rear passengers in an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of an airbag structure in an embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram in the front view direction of the airbag structure in the deployed state in an embodiment of the present invention;

[0022] Figure 4 is a schematic structural diagram in a side view direction of an airbag structure in an expanded state in an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the structure in a top view direction in an airbag structure deployed state in an embodiment of the present invention;

[0024] Figure 6 It is a schematic structural diagram of a front seat frame of an automobile in an embodiment of the present invention.

[0025] Figure 7 is a connection block diagram of an airbag structure in an embodiment of the present invention;

[0026] The following are marked in the figure: front seat of the car - 1, airbag structure - 10, gas generator - 11, airbag bag - 12, mounting bracket - 13, fastening strap - 14, fixing plate - 15, sealing stitching - 16, igniter - 20, ECU controller - 30, collision sensor - 40. DETAILED DESCRIPTION

[0027] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0028] Figure 1 Schematic diagram of the structure of an airbag device for protecting rear passengers in an embodiment of the present invention.

[0029] like Figure 1 As shown, the airbag device for protecting rear passengers provided by the present invention includes an airbag structure 10 arranged on the front seat 1 of the car. The airbag structure is located on the side of the front seat 1 of the car close to the rear seat of the car. In a seven-seat SUV model, the airbag structure 10 is located on the side of the second row seat close to the third row seat. When a head-on collision occurs in the car, the airbag structure 10 can pop out quickly to fill the space between the third row seat and the second row seat, provide effective protection for the legs and head of the third row seat, and reduce the threat and harm of the collision to the rear passengers. The present invention also provides a control method for the airbag device for protecting rear passengers, which is used to ensure that the airbag structure can be smoothly popped out during a collision, so that the airbag device for protecting rear passengers provided by the present invention and the control method thereof can be applicable to seven-seat SUV models, can effectively improve the safety of riding, can effectively reduce the threat and harm to the rear passengers when a head-on collision occurs in the car, and can effectively improve the safety of the entire vehicle.

[0030] Figure 2 Schematic diagram of the structure of the airbag in an embodiment of the present invention.

[0031] like Figure 2 As shown, the airbag structure 10 includes a gas generator 11 and an airbag bag 12 connected to the gas generator 11. The gas generator 11 is arranged on the front seat 1 of the car. In a seven-seat SUV model, the gas generator 11 is arranged on the side of the second row of seats close to the third row of seats. When the vehicle collides, the gas generator 11 can quickly generate a large amount of gas to inflate the airbag bag 12, so that the airbag bag 12 can expand and expand quickly, fill the space between the third row of passengers and the second row of seats, and provide effective protection for the legs and heads of the third row of passengers. The airbag bag 12 is made of polyamide fabric with good crack resistance. Polyamide is a semi-hard foam plastic that can withstand greater pressure. After vulcanization treatment, it can help reduce the inertia force of the airbag bag 12 when it is inflated and expand, and prevent secondary injuries to the rear passengers.

[0032] The airbag structure 10 also includes a mounting bracket 13, which is arranged on the front seat 1 of the automobile. In a seven-seat SUV model, the mounting bracket 13 is detachably mounted on the side of the second row of seats close to the third row of seats by bolts. The mounting bracket 13 is connected to the gas generator 11, so that the gas generator 11 is installed on the side of the second row of seats close to the third row of seats. The gas generator 11 is arranged on the mounting bracket 13 by a fastening strap 14, which can enhance the structural strength between the gas generator 11 and the mounting bracket 13.

[0033] A fixing plate 15 is provided on the airbag bag 12. The fixing plate 15 is arranged on the airbag bag 12. The fixing plate 15 is located on one side of the mounting bracket 13. The fixing plate 15 is connected to the front seat 1 of the car. In a seven-seat SUV model, the airbag bag 12 is connected to a side of the second row seat close to the third row seat through the fixing plate 15. The airbag bag 12 can be limited when it is rapidly inflated and deployed to prevent the position of the airbag bag 12 from changing during the deployment process, thereby improving the reliability of the airbag bag 12 and ensuring that the airbag bag 12 can be rapidly inflated and deployed to fill the space between the third row occupants and the second row seats, thereby providing effective protection for the legs and heads of the third row occupants.

[0034] The airbag bag 12 is provided with a sealing seam 16 in an inverted "U" shape. The sealing seam 16 can effectively ensure the direction of the deployment of the airbag bag 12 during the deployment of the airbag bag 12 through the design of the bag shape of the airbag bag 12 and the sealing seam 16, and effectively cover the rigid structure on the second row of seats, effectively separate the third row of passengers from the second row of seats in the event of a collision, and provide effective protection for the legs and heads of the third row of passengers.

[0035] Figure 3 is a schematic structural diagram in the front view direction of the airbag structure in the deployed state in an embodiment of the present invention; Figure 4 is a schematic structural diagram in a side view direction of an airbag structure in an expanded state in an embodiment of the present invention; Figure 5 is a schematic diagram of the structure in a top view direction in an airbag structure deployed state in an embodiment of the present invention; Figure 6 It is a schematic structural diagram of a front seat frame of an automobile in an embodiment of the present invention.

[0036] like Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, in the event of a head-on collision, the airbag bag 12 deploys downward to fill the space between the third row occupants and the second row seats, effectively covering the rigid structure on the second row seats, providing effective protection for the legs and heads of the third row occupants, and reducing the threat and injury to the rear passengers caused by the collision.

[0037] Figure 7 1 is a connection block diagram of the airbag structure in an embodiment of the present invention.

[0038] like Figure 7As shown, the gas generator 11 is connected to the igniter 20, the igniter 20 is connected to the ECU controller 30, and the ECU controller 30 is connected to the collision sensor 40. After the ECU controller 30 issues an ignition signal command, the igniter 20 can receive an ignition signal, and the igniter 20 detonates the ignition medium in the gas generator 11, triggering a chemical reaction to generate a large amount of gas in a short time, which is filled into the airbag bag 12, so that the airbag bag 12 can be quickly expanded and deployed to fill the space between the third row of passengers and the second row of seats, providing effective protection for the legs and heads of the third row of passengers.

[0039] The collision sensor 40 includes a sensor installed at the front end of the vehicle and a sensor installed in the middle of the vehicle. When the vehicle has a traffic accident such as a head-on collision, the sensor installed at the front end of the vehicle and the sensor installed in the middle of the vehicle will detect a sudden drop in vehicle speed and feel the impact force. Only when the impact force reaches a certain intensity, and usually comes from a collision within a certain angle from the front, will the sensor be triggered. Usually, this impact force is approximately equal to the result of colliding with a fixed object at a speed of about 25 to 50 kilometers per hour. The reaction time of the collision sensor 40 is generally within 0.01s, and the detected collision signal will be transmitted to the ECU controller 30 in a very short time.

[0040] After receiving the collision signal, the ECU controller 30 will analyze and compare it with the original set signal to determine whether the collision intensity and the direction of the collision meet the deployment conditions of the airbag structure 10. After the ECU controller 30 confirms that the airbag structure 10 needs to be deployed, the ECU controller 30 turns on the igniter 20, detonates the ignition medium in the gas generator 11 within 0.003s, and the flame ignites the ignition powder and the gas generator to produce a large amount of harmless gas mainly composed of nitrogen. These gases inflate the airbag bag 12 in a very short time, causing the airbag bag 12 to expand rapidly. The airbag bag 12 can expand and deploy quickly to fill the space between the third row of passengers and the second row of seats, providing effective protection for the legs and heads of the third row of passengers. High-pressure gas enters the airbag bag 12 within 0.05 seconds, the airbag bag 12 expands outward within 0.08 seconds, and the airbag bag 12 is fully inflated within 0.11 seconds, thereby quickly completing the expansion process of the airbag bag 12, filling the space between the third-row occupants and the second-row seats, and providing effective protection for the legs and heads of the third-row occupants.

[0041] The present invention also provides a control method for the airbag device for protecting rear passengers according to the above. When a frontal collision occurs, the airbag structure 10 pops out to fill the front seat 1 and the rear seat of the car. When a frontal collision occurs, the collision sensor 40 installed at the front end of the car and the collision sensor 40 installed in the middle of the car will detect the sudden drop in vehicle speed and feel the impact force. When the impact force reaches a certain intensity, the collision sensor 40 is triggered and the detected collision signal is transmitted to the ECU controller 30 in a very short time. After receiving the collision signal, the ECU controller 30 will analyze and compare it with the original set signal to determine whether the collision intensity and the direction of the collision meet the deployment conditions of the airbag structure 10. When the ECU controller 30 confirms that the airbag needs to be deployed, the airbag is deployed. After the structure 10 is formed, the ECU controller 30 turns on the igniter 20, and the ignition medium in the gas generator 11 is detonated within 0.003s. The flame ignites the ignition powder and the gas generating agent, and generates a large amount of harmless gas mainly composed of nitrogen. These gases inflate the airbag bag 12 in a very short time, causing the airbag bag 12 to expand rapidly, and can quickly pop out and deploy from the weakened line of the second row seat back cover. The airbag bag 12 expands and deploys rapidly, filling the space between the third row occupants and the second row seats, providing effective protection for the legs and heads of the third row occupants.

[0042] When the airbag device for protecting rear passengers provided by the present invention is installed on a seven-seater SUV model, when the car is in a head-on collision, the airbag structure 10 can pop out and deploy quickly to fill the space between the third-row passengers and the second-row seats, provide effective protection for the legs and heads of the third-row passengers, and reduce the threat and damage to the rear passengers caused by the collision. The present invention also provides a control method for the airbag device for protecting rear passengers, which is used to ensure that the airbag structure can be successfully popped out during a collision. The airbag device for protecting rear passengers provided by the present invention and the control method thereof can be applicable to seven-seater SUV models, can effectively improve the safety of the car, can effectively reduce the threat and damage to the rear passengers when the car is in a head-on collision, and can effectively improve the safety of the entire vehicle.

[0043] Functions and Effects of the Embodiments

[0044] The airbag device for protecting rear passengers provided by the present invention includes an airbag structure arranged on the front seats of the car. The airbag structure is located on the side of the front seats of the car close to the rear seats. In a seven-seat SUV model, the airbag structure is located on the side of the second row seats close to the third row seats. When a head-on collision occurs in the car, the airbag structure can pop out quickly to fill the space between the third row seats and the second row seats, providing effective protection for the legs and heads of the third row passengers and reducing the threat and damage to the rear passengers caused by the collision. The present invention also provides a control method for the airbag device for protecting rear passengers, which is used to ensure that the airbag structure can pop out smoothly during a collision.

[0045] Therefore, the airbag device for protecting rear passengers and the control method thereof provided by the present invention can be applicable to seven-seater SUV models, can effectively improve the safety of riding, can effectively reduce the threat and damage to rear passengers in the event of a head-on collision of the car, and can effectively improve the safety of the entire vehicle.

[0046] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An airbag device for protecting rear passengers, characterized in that: The invention comprises an airbag structure (10) arranged on a front seat (1) of a car, wherein the airbag structure (10) is located on a side of the front seat (1) of the car close to the rear seat of the car.

2. The airbag device for protecting rear passengers according to claim 1, characterized in that: The airbag structure (10) comprises a gas generator (11) and an airbag bag (12) connected to the gas generator (11); the gas generator (11) is arranged on the front seat (1) of the automobile.

3. The airbag device for protecting rear passengers according to claim 2, characterized in that: The airbag structure (10) further comprises a mounting bracket (13), wherein the mounting bracket (13) is arranged on the front seat (1) of the automobile, and the mounting bracket (13) is connected to the gas generator (11).

4. The airbag device for protecting rear passengers according to claim 3, characterized in that: The gas generator (11) is arranged on the mounting bracket (13) by means of a fastening strap (14).

5. The airbag device for protecting rear passengers according to claim 4, characterized in that: The airbag bag (12) is provided with a fixing plate (15), the fixing plate (15) is arranged on the airbag bag (12), and the fixing plate (15) is located on one side of the mounting bracket (13).

6. The airbag device for protecting rear passengers according to claim 5, characterized in that: The airbag cloth bag (12) is provided with a sealing seam (16), and the sealing seam (16) is in an inverted "U" shape.

7. The airbag device for protecting rear passengers according to claim 6, characterized in that: The gas generator (11) is connected to an igniter (20).

8. The airbag device for protecting rear passengers according to claim 7, characterized in that: The igniter (20) is connected to an ECU controller (30).

9. The airbag device for protecting rear passengers according to claim 8, characterized in that: The ECU controller (30) is connected to a collision sensor (40).

10. A method for controlling an airbag device for protecting rear passengers according to any one of claims 1 to 9, characterized in that: When a frontal collision occurs, the airbag structure (10) pops out to fill the front seats (1) and the rear seats of the vehicle.

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