Air bag air guide structure and safety air bag

Abstract

The utility model relates to the technical field of safety air bags, in particular to an air bag air guide structure and a safety air bag, which comprises an air guide pipe, an air inlet and an air outlet are respectively arranged at two ends of the air guide pipe, and the air guide pipe is used for guiding air to flow; the flow regulating valve is arranged in the middle of the gas guide pipe and used for regulating the flow of gas passing through the gas guide pipe; the gas distribution net is connected to the gas outlet of the gas guide pipe, and a plurality of micropores are formed in the gas distribution net and used for uniformly distributing gas into the gas bag; the gas generator is connected with the gas inlet of the gas guide pipe and used for generating and releasing gas to the gas guide pipe; the control unit is used for receiving a signal from the vehicle collision sensor and starting the gas generator, and meanwhile, the control unit is used for controlling the work of the flow regulating valve; the reliability and the safety are improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of airbags, in particular to an airbag gas guiding structure and an airbag. Background Art

[0002] With the rapid development of the automotive industry and the continuous improvement of people's requirements for automotive safety performance, as an important part of the automotive passive safety system, the optimization and improvement of the performance of airbags have received increasing attention. The main function of an airbag is to protect passengers from harm by quickly inflating and expanding when a vehicle collision occurs.

[0003] Currently, most of the airbag gas guiding structures on the market adopt a simple air duct design, and gas is directly injected into the airbag interior through the air duct. However, this design has the problem of uneven gas distribution, resulting in the airbag may not fully cover the passengers during inflation, thus affecting the protection effect. In addition, the existing gas guiding structures also have deficiencies in gas flow regulation and cannot accurately adjust the gas injection volume according to the severity of the collision and the needs of the passengers.

[0004] Therefore, it is necessary to develop a new type of airbag gas guiding structure and airbag to improve the uniformity of gas distribution, enhance the reliability of the system, and simplify the installation and maintenance process, so as to provide more reliable safety protection for vehicle passengers. The present utility model is proposed based on such a technical background and market demand. Summary of the Utility Model

[0005] To solve the above technical problems, the present utility model provides an airbag gas guiding structure and an airbag that improve reliability and safety and reduce manufacturing costs.

[0006] The airbag gas guiding structure and airbag of the present utility model include:

[0007] An air duct with an air inlet and an air outlet respectively provided at both ends for guiding gas flow;

[0008] A flow regulating valve provided in the middle of the air duct for regulating the gas flow through the air duct;

[0009] A gas distribution net connected to the air outlet of the air duct, and the gas distribution net is provided with a plurality of micropores for evenly distributing gas into the airbag interior;

[0010] A gas generator connected to the air inlet of the air duct for generating and releasing gas into the air duct;

[0011] A control unit that receives signals from vehicle collision sensors, starts the gas generator, and simultaneously controls the operation of the flow regulating valve.

[0012] Further, the air duct is provided with:

[0013] A temperature sensor for monitoring the temperature of the gas in the air duct;

[0014] A pressure sensor for monitoring the pressure of the gas in the air duct;

[0015] The temperature sensor and the pressure sensor are used to monitor the state of the flow regulating valve.

[0016] Preferably, the flow regulating valve is a valve flap structure with adjustable opening degree, and the opening and closing degree of the valve flap is adjusted by rotation or sliding.

[0017] Further, the gas generator is a pyrotechnic gas generator, which can quickly generate a large amount of gas after receiving a trigger signal.

[0018] Preferably, the control unit further adjusts the output of the gas generator and the opening degree of the flow regulating valve according to the feedback of the temperature sensor and the pressure sensor.

[0019] Further, the airbag body is made of flexible material, and a gas accommodation space is formed inside, which is communicated with the gas distribution network.

[0020] Preferably, exhaust holes and exhaust valves cooperating therewith are provided at the edge part of the airbag body, and the exhaust valves are automatically opened when the internal pressure of the airbag exceeds a preset value to release excess gas.

[0021] Further, the airbag body is provided with a folding area, which is folded and stored when the airbag is not inflated, and is unfolded to cover the protection area when inflated.

[0022] Through a designed airbag air guiding structure and airbag: it shows significant advantages in terms of safety, uniform gas distribution, system reliability, installation and maintenance convenience, etc., providing more reliable safety protection for vehicle passengers. Brief Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of an airbag air guiding structure and airbag in the present utility model at a first angle;

[0024] Figure 2 is a schematic structural diagram of an airbag air guiding structure and airbag in the present utility model at a second angle;

[0025] Figure 3 is an enlarged schematic structural diagram of part A of an airbag air guiding structure and airbag in the present utility model Figure 2 ;

[0026] Figure 4 is a schematic structural flow diagram of an airbag air guiding structure and airbag in the present utility model;

[0027] Reference numerals in the drawings: 1, gas duct; 11, temperature sensor; 12, pressure sensor; 2, flow control valve; 3, gas distribution network; 4, gas generator; 5, control unit; 6, airbag body; 61, exhaust valve. Detailed implementation manners

[0028] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0029] The present utility model relates to an airbag gas guiding structure, as Figures 1 to 4 shown, including:

[0030] The gas duct 1 can be made of high-strength, high-temperature resistant and corrosion-resistant plastic or metal materials. Its length and diameter are designed according to the size of the airbag and the required gas flow rate. An air inlet and an air outlet are respectively arranged at both ends thereof, for guiding the gas flow;

[0031] The flow control valve 2 is arranged in the middle of the gas duct 1. The flow control valve 2 can select a solenoid valve or a mechanical valve with strong adjustability and sensitive response, for adjusting the gas flow rate through the gas duct 1;

[0032] The gas distribution network 3 is connected to the air outlet of the gas duct 1. The gas distribution network 3 is provided with a plurality of micropores. The size and number of the micropores are designed according to the shape and size of the airbag, for evenly distributing the gas into the airbag interior;

[0033] The gas generator 4 is connected to the air inlet of the gas duct 1, for generating and releasing gas into the gas duct 1. The gas generator 4 is connected to the air inlet of the gas duct 1 through a sealing joint to ensure that the gas will not leak;

[0034] The control unit 5 uses an advanced microprocessor as the control core, for receiving signals from the vehicle collision sensor, and starting the gas generator 4, and the control unit 5 simultaneously controls the operation of the flow control valve 2;

[0035] The working principle of the gas guiding structure of this device is as follows:

[0036] When a vehicle collision occurs, the collision sensor sends a signal to the control unit 5. After receiving the signal, the control unit immediately starts the gas generator 4 to generate and release a large amount of gas into the gas duct 1. At the same time, the control unit 5 controls the operation of the flow control valve 2 to adjust the gas flow rate through the gas duct as needed. After the gas passes through the gas duct 1, it enters the gas distribution network 3 and is evenly distributed into the airbag interior through the micropores thereon, so that the airbag expands rapidly and protects the passengers;

[0037] The airbag gas guiding structure and airbag of the present utility model show significant advantages in terms of safety, uniform gas distribution, system reliability, and ease of installation and maintenance, providing more reliable safety protection for vehicle passengers.

[0038] As a priority, the device is designed with a more optimal air duct 1, as Figures 1 to 3 shown, including: on the air duct 1 are provided:

[0039] A temperature sensor 11, which can select a thermistor or thermocouple sensor with high sensitivity, fast response, and long-term stability, is used to monitor the temperature of the gas in the air duct 1;

[0040] A pressure sensor 12, which can select a piezoresistive or capacitive pressure sensor with high precision, wide measurement range, and fast response ability, is used to monitor the pressure of the gas in the air duct 1;

[0041] The temperature sensor 11 and the pressure sensor 12 are used to monitor the state of the flow regulating valve 2. The installation position of the temperature sensor 11 should be close to the upstream of the flow regulating valve 2 to accurately reflect the gas temperature before entering the flow regulating valve 2, and the installation position of the pressure sensor 12 should be close to the downstream of the flow regulating valve 2 to accurately reflect the gas pressure after passing through the flow regulating valve 2;

[0042] The temperature sensor 11 and the pressure sensor 12 can monitor the temperature and pressure of the gas in the air duct 1 in real time, providing valuable data support for the control unit 5. These data help the control unit more precisely control the output of the gas generator 4 and the regulation of the flow regulating valve 2, thereby ensuring that the airbag maintains the best state during the inflation process. By monitoring the temperature and pressure of the gas, potential safety hazards can be detected and prevented in a timely manner.

[0043] Among them, the device is designed with a more optimal flow regulating valve 2, as Figures 1 to 4 shown, including: the flow regulating valve 2 is a valve flap structure with adjustable opening degree, and by rotating or sliding the opening and closing degree of the valve flap, the gas flow is controlled;

[0044] This fine adjustment ability of the flow regulating valve 2 enables the airbag to adjust the gas input amount according to actual needs during the inflation process, thereby ensuring that the airbag quickly expands in the best state and provides timely and effective protection for passengers. Whether in a collision accident at different vehicle speeds or in the face of airbags of different shapes and sizes, the system can adapt to different inflation requirements by adjusting the opening and closing degree of the valve flap, thereby improving the applicability and compatibility of the entire airbag gas guiding structure.

[0045] As a preference, the device is designed with a more optimal gas generator 4, as Figure 1 and Figure 2As shown in the figure, it includes that the gas generator 4 is a pyrotechnic gas generator, which is responsible for quickly generating and releasing a large amount of gas after receiving a trigger signal to inflate the airbag;

[0046] The fast inflation ability ensures that the airbag can be deployed immediately when the vehicle collides, providing timely and effective protection for passengers, greatly reducing the injury risk in accidents, and ensuring its stable operation under various extreme conditions.

[0047] Traditionally, the control unit can be implemented by using existing technologies such as a microprocessor with a simple algorithm. However, these existing technologies can only achieve simple data collection and basic control functions. In this device, it is necessary to monitor the temperature and pressure of the gas in the air duct in real time and dynamically adjust the working states of the gas generator and the flow regulating valve according to these parameters. To solve the above problems, a more optimized control unit 5 is designed in this device, as Figure 3 Figure 4 As shown in the figure, it includes that the control unit 5 further adjusts the output of the gas generator 4 and the opening degree of the flow regulating valve 2 according to the feedback of the temperature sensor 11 and the pressure sensor 12;

[0048] The working principle of the control unit 5 of this device is as follows:

[0049] When the system starts, the control unit 5 initializes the temperature sensor 11 and the pressure sensor 12 to ensure their normal operation. Subsequently, the control unit 5 calibrates the sensor data according to the preset calibration values to improve the data accuracy. The temperature sensor 11 and the pressure sensor 12 will monitor the temperature and pressure of the gas in the air duct 1 in real time and transmit the data to the control unit 5. The control unit 5 continuously collects these data, processes and analyzes them. When the control unit 5 receives a trigger signal from the collision sensor, it will immediately start the gas generator 4 and simultaneously start dynamic adjustment according to the feedback of the temperature sensor 11 and the pressure sensor 12.

[0050] The utility model relates to an airbag, as Figures 1 to 2 As shown in the figure, it includes: an airbag body 6, which is made of a flexible material and forms a gas accommodation space inside, and is connected to the gas distribution network 3. The airbag body 6 is a key component of the system, which is responsible for quickly expanding after receiving gas to provide protection for passengers;

[0051] The working principle of the airbag body 6 of this device is as follows:

[0052] When a vehicle collision occurs, the control unit 5 receives a signal from the collision sensor and immediately activates the gas generator 4. The gas generator 4 rapidly generates and releases a large amount of gas. These gases enter the gas distribution network 3 through the gas conduit 1. The micropores on the gas distribution network 3 evenly distribute the gases into the interior of the airbag body 6, causing it to rapidly expand and form a protective barrier. This barrier can effectively absorb the impact force generated by the collision and provide protection for the passengers.

[0053] The design features of the airbag body 6 not only improve the protection effect of passengers in collision accidents, but also ensure the uniformity and stability of airbag inflation, enhance the reliability and durability of the system, and optimize the convenience of installation and maintenance.

[0054] As Figure 1 and Figure 2 shown, as a preferred solution, the edge portion of the airbag body 6 is provided with exhaust holes and an exhaust valve 61 cooperating therewith. The exhaust valve 61 automatically opens when the internal pressure of the airbag exceeds a preset value to release excess gas.

[0055] The working principle of the exhaust valve 61 of this device is as follows:

[0056] As the airbag expands, its internal pressure gradually increases. When the pressure exceeds the preset value, the exhaust valve 61 automatically opens to release excess gas, thereby reducing the internal pressure of the airbag and preventing the airbag from over-expanding and causing secondary injuries to the passengers.

[0057] As Figure 1 and Figure 2 shown, as a preferred solution, the airbag body 6 is provided with a folding area that is folded and stored when the airbag is not inflated and unfolds to cover the protection area when inflated.

[0058] The airbag body 6 is provided with a folding area, enabling it to be folded and stored compactly when the airbag is not inflated, greatly saving installation space. The design of the folding area allows the airbag to unfold rapidly when inflated to cover the predetermined protection area.

[0059] For an airbag gas guiding structure and a safety airbag of the present utility model, its installation method, connection method or setting method are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out.

[0060] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An air bag gas guide structure, characterized in that: include: An air guide pipe (1) having an air inlet and an air outlet at both ends thereof, respectively, for guiding the flow of gas; A flow regulating valve (2), arranged in the middle of the air duct (1), and used for regulating the flow of gas passing through the air duct (1); A gas distribution network (3) connected to the gas outlet of the gas guide tube (1), the gas distribution network (3) being provided with a plurality of micropores for evenly distributing the gas inside the airbag; A gas generator (4), connected to the air inlet of the air duct (1), and used for generating and releasing gas into the air duct (1); A control unit (5) receives a signal from a vehicle collision sensor and starts the gas generator (4), and the control unit (5) simultaneously controls the operation of the flow regulating valve (2).

2. The air bag gas guide structure according to claim 1, characterized in that: The air guide tube (1) is provided with: A temperature sensor (11) for monitoring the temperature of the gas in the air duct (1); A pressure sensor (12) for monitoring the pressure of the gas in the airway tube (1); The temperature sensor (11) and the pressure sensor (12) are used to monitor the state of the flow regulating valve (2).

3. The air bag gas guide structure according to claim 1, characterized in that: The flow control valve (2) is a valve flap structure with adjustable opening, and the opening and closing degree of the valve flap is adjusted by rotation or sliding.

4. The air bag gas guide structure according to claim 1, characterized in that: The gas generator (4) is a pyrotechnic gas generator capable of rapidly generating a large amount of gas upon receiving a trigger signal.

5. The air bag gas guide structure according to claim 2, characterized in that: The control unit (5) further adjusts the output of the gas generator (4) and the opening of the flow control valve (2) according to feedback from the temperature sensor (11) and the pressure sensor (12).

6. A safety airbag, characterized in that: An airbag gas guide structure comprising any one of claims 1 to 5, and comprising: The airbag body (6) is made of a flexible material and has a gas accommodating space formed therein, which is connected to the gas distribution network (3).

7. The airbag according to claim 6, characterized in that An exhaust hole and an exhaust valve (61) cooperating therewith are provided at the edge of the airbag body (6); the exhaust valve (61) automatically opens when the pressure inside the airbag exceeds a preset value to release excess gas.

8. The airbag according to claim 6, characterized in that The airbag body (6) is provided with a folding area, which is folded and stored when the airbag is not inflated, and unfolded to cover the protection area when the airbag is inflated.

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