CN114620002A - Air bag, air bag assembly and vehicle - Google Patents

Abstract

The present invention provides an airbag, an airbag assembly and a vehicle. The airbag includes: a gas generator, an accommodating cavity is arranged inside, an igniter and an igniting agent are arranged in the accommodating cavity, the control end of the igniter ignites the igniting agent after receiving the ignition signal, and the gas generator is provided with a row communicating with the accommodating cavity. Air port; air duct, the air inlet of which is connected to the exhaust port; the air bag is fixedly connected with the side wall of the seat frame of the front seat, the air inlet of the air bag is connected with the air outlet of the air duct, and the air bag is filled After the gas is deployed, it includes a first inflatable section and a second inflatable section that are connected. The first inflatable section extends from the side wall of the front seat where the airbag is installed to the front and rear of the vehicle body. The second inflatable section is connected to the first inflatable section. The segment communicates with one end toward the rear of the vehicle body, and extends in the width direction of the rear seat between the front seat and the rear seat. By means of the present invention, the sides of the front passenger and the front of the rear passenger can be protected from impact damage at the same time.

Description

Airbags, airbag assemblies and vehicles

technical field

The invention relates to the technical field of vehicles, in particular to an airbag, an airbag assembly and a vehicle

Background technique

As an indispensable part of the passive safety system of the car, the airbag can be used in conjunction with the seat belt in the event of a traffic accident to provide effective collision protection for the occupants and reduce the injury rate of the occupants. The existing airbags have a single protection direction, and use one airbag to protect the side of the front passenger and the front of the rear passenger at the same time, which can reduce the number of airbags installed, and can avoid arranging the airbags behind the front seats. The display screen or the small table board installed behind the seat has a position conflict, therefore, it is necessary to propose an airbag which can protect the side of the front passenger and the front of the rear passenger at the same time.

SUMMARY OF THE INVENTION

In view of this, the present invention provides an airbag, an airbag assembly and a vehicle. Airbags are arranged on the sidewalls of the front seats. After the airbags are inflated and deployed, they can both extend and inflate the sides of the front seats in the front and rear directions of the vehicle body to protect the side of the front passengers from injury, and can also extend to the rear. The front of the seat extends and expands while protecting the front of the rear passenger from injury.

The airbag provided by the present invention includes: a gas generator, an accommodating cavity is arranged inside the gas generator, an igniter and an ignition agent are arranged in the accommodating cavity, and the control end of the igniter ignites the ignition signal after receiving the ignition signal. For the ignition agent, the gas generator is provided with an exhaust port that communicates with the accommodating cavity; an air duct, the air inlet of the air duct is connected to the exhaust port of the gas generator; an air bag, the The air bag is fixedly connected to the side wall of the seat frame of the front seat, and the air inlet of the air bag is communicated with the air outlet of the air duct. an inflatable section and a second inflatable section, the first inflatable section extends from the side wall of the front seat on which the air bag is installed to the front and rear of the vehicle body, the second inflatable section and the first inflatable section One end facing the rear of the vehicle body communicates and extends in the width direction of the rear seat between the front seat and the rear seat.

Optionally, the circumferential turning points of the first inflatable section are all set as arc transitions.

Optionally, the circumferential turning points of the second inflatable section are all set as arc transitions.

Optionally, a groove is provided on one end surface of the second inflatable section facing the front seat.

Optionally, a filter is provided in the accommodating cavity, and the filter is circumferentially connected to the inner wall of the accommodating cavity between the ignition agent and the exhaust port.

The present invention also provides an airbag assembly, including the airbag described in any one of the above, and further comprising: a generator bracket, the generator bracket is connected to the front seat on which the airbag of the airbag is installed. The seat frame is fixedly connected; the generator strap binds the gas generator of the airbag to the generator bracket.

Optionally, the generator bracket is detachably connected to the seat frame of the front seat on which the air bag is installed.

Optionally, the airbag assembly further includes: a crash intensity sensor, the crash intensity sensor is fixedly connected to the vehicle body and used to monitor the intensity of the crash; a controller, the input end of the controller is connected to the crash intensity sensor The output end of the controller is communicatively connected with the control end of the igniter of the airbag.

Optionally, the airbag assembly further includes a safety collision sensor, the safety collision sensor is fixedly connected to the vehicle body, and the output end of the safety collision sensor is communicatively connected to the input end of the controller.

The present invention also provides a vehicle, comprising a vehicle body, a front row seat and a rear row seat installed in the vehicle body, and also includes the airbag assembly described in any one of the above, wherein the airbag assembly has an airbag assembly. The bag is fixedly connected to the side wall of the seat frame of the front seat, and the generator bracket of the airbag assembly and the seat frame of the front seat with the air bag installed face the rear seat One side of the chair is fixedly attached.

The above technical solutions provided by the present invention, compared with the prior art, at least have the following beneficial effects:

By adopting the airbag, the airbag assembly and the vehicle of the present invention, the airbag is arranged on the side wall of the front seat. After the airbag is inflated and deployed, the side of the front seat can face the front and rear directions of the vehicle body by means of the first inflation section. The extension and expansion protects the side of the front passenger from injury, and the second inflatable segment can extend and inflate in front of the rear seat while protecting the front of the rear passenger from injury.

Description of drawings

1 is a schematic diagram of the airbag in a folded state when the airbag according to an embodiment of the present invention is installed on the seat frame;

Fig. 2 is a schematic diagram of the air bag of the airbag shown in Fig. 1 when the air bag is inflated and opened on the front seat;

FIG. 3 is a top view of the air bag shown in FIG. 2 in an inflated open state.

Reference number:

1: gas generator; 2: airway; 3: air bag; 31: first inflatable segment; 32: second inflatable segment; 4: seat frame; 5: groove; 6: generator bracket; 7: occurrence device straps; 8: front seats.

Detailed ways

The embodiments of the present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only a simplified description for the convenience of describing the present invention, rather than indicating or implying that the indicated device or component must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance. Therein, the terms "first position" and "second position" are two different positions.

1 is a schematic diagram of the airbag in a folded state when the airbag according to an embodiment of the present invention is installed on the seat frame; FIG. 2 is the airbag of the airbag shown in FIG. 1 inflated and opened on the front seat Figure 3 is a top view of the air bag shown in Figure 2 when it is inflated and opened.

As shown in FIG. 1 to FIG. 3 , the airbag includes a gas generator 1 , an air guide tube 2 and an air bag 3 .

The gas generator 1 is provided with an accommodating cavity, and an igniter (not shown) and an ignition agent (not shown) are arranged in the accommodating cavity. After the control end of the igniter receives an ignition signal, it ignites the Ignition agent, the gas generator 1 is provided with an exhaust port that communicates with the accommodating cavity; the air inlet of the air duct 2 is connected to the exhaust port of the gas generator 1; the air bag 3 is connected to the front The side walls of the seat frame 4 of the row seat are fixedly connected, and the air inlet of the air bag 3 is connected with the air outlet of the air duct 2. After the air bag 3 is filled with gas and expanded, it includes a first inflatable connected to the air. Section 5 and second inflatable section 6, the first inflatable section 5 extends from the side wall of the front seat on which the air bag 3 is installed to the front and rear of the vehicle body, and the second inflatable section 6 is connected to the rear of the vehicle body. One end of the first inflatable section 5 toward the rear of the vehicle body is communicated, and extends along the width direction of the rear seat between the front seat and the rear seat.

The front of the body refers to the direction of the engine compartment of the vehicle, and the rear of the body refers to the direction of the trunk of the vehicle.

When the vehicle is impacted, and the impact strength meets the conditions for opening the air bag 3, the control end of the igniter in the gas generator 1 receives the ignition signal, and the igniter ignites, so that the The ignition agent in the gas generator 1 is ignited, and the ignition agent burns to generate a large amount of gas, and these gases have a relatively large pressure, and are discharged to the guide through the exhaust port of the gas generator 1. The trachea 2 is discharged to the air bag 3 through the air guide tube 2, and the air bag 3 is quickly filled, so that the air bag 3 is rapidly inflated, and after the air bag 3 is fully inflated and opened, the air bag 3 The first inflatable section 31 of the bag 3 extends along the front-rear direction of the vehicle body on the side of the front seat, so that during a collision, when the front passenger shakes to the side, the front passenger and the first inflatable are separated from each other. The segment 31 is in contact with the body instead of directly colliding with the vehicle body, so as to protect the side of the front passenger from injury; at the same time, the second inflatable segment 32 communicated with the end of the first inflatable segment 31 extending toward the rear of the vehicle body is in front of the The space between the row seat and the rear row seat extends along the width direction of the rear row seat, so that during the collision, when the body of the rear row passenger leans forward to cause a forward collision tendency, the rear row passenger and the second inflator are connected to each other. Segment 32 contacts, rather than directly colliding with the front seats, protecting the front of rear passengers from injury.

With the airbag of the present invention, the air bag 3 is arranged on the side wall of the front seat. After the air bag 3 is inflated and expanded, the side of the front seat can face the vehicle body by means of the first inflation section 31. Extending and expanding in the front-rear direction protects the side of the front passenger from injury, and can extend and expand in front of the rear seat by means of the second inflatable section 32 while protecting the front of the rear passenger from injury.

In this embodiment, the air bag 3 is installed on the side wall of the seat frame 4 in the main driving position of the front seat as an example. Specifically, the air bag 3 is the same as the seat frame 4 in FIG. 1 . The left side wall, that is, the side wall facing the door, is connected, and the air bag 3 and the seat frame 4 are connected by bolts. The extension length of the air bag 3 in the folded state is approximately equal to the seat frame. 4 of the height of the backrest, the gas generator 1 is set as a hollow cylinder, fixed behind the backrest of the seat frame 4 in FIG. 1 , the length of the gas generator 1 is approximately equal to the seat frame 4 The width of the backrest, the air duct 2 communicates the gas generator 1 and the air bag 3, and the height of the exhaust port of the gas generator 1 and the air inlet of the air bag 3 is approximately the same . When the vehicle encounters a collision and the conditions for opening the air bag 3 are met, the control end of the igniter receives an ignition signal, ignites the ignition agent, and the ignition agent burns, and the ignition agent is burned in the gas generator 1 A large amount of high-pressure gas is generated, and the gas enters the air bag 3 through the exhaust port of the gas generator 1 and the air conduit 2, and quickly fills the air bag 3 and expands the air bag 3. After the air bag 3 is inflated, it extends into the first inflatable section 31 and the second inflatable section 32 shown in FIG. 2 and FIG. 3 , and the first inflatable section 31 and the second inflatable section 32 are on the vehicle floor As shown in Fig. 3, the projection of the airbag 31 is in an "L" shape as a whole, and the first inflatable section 31 expands on one side of the installation position of the air bag 3, that is, the side of the main driving position facing the door, so that all The first inflatable section 31 extends and expands in the height direction of the backrest and within a distance in the front-rear direction of the vehicle body adjacent to the backrest, so as to protect the driver from contacting the first inflatable section 31 during sideways shaking, and not directly contacting the inflatable section 31. The vehicle body is rigidly collided, so as to protect the driver's side from injury. At the same time, the first inflatable section 31 extends a certain distance toward the rear seat, and the end is communicated with the second inflatable section 32, as shown in FIG. 3 . As shown, the second inflatable section 32 extends and expands between the front seat 8 and the rear seat (not shown), and extends along the width direction of the rear seat to protect the rear passengers when they move forward In contact with the second inflatable section 32, it will not collide hard with the front seat, thereby protecting the front of the rear passenger from injury. According to the actual application, the specific shape, specific extension length and height of the first inflatable section 31 and the second inflatable section 32 can be adjusted, as long as the side of the front passenger and the front of the rear passenger can be protected at the same time. . The air bag 3 can be installed on the side wall of each front seat, and each air bag 3 corresponds to one of the gas generators 1 and one of the air guide tubes 2. After the igniter in 1 receives the ignition signal, it ignites the igniter to inflate the corresponding air bag 3 to protect the passengers in the corresponding position. The process of igniting the ignition agent after the control end of the igniter receives the ignition signal is a mature prior art, and the specific working principle thereof will not be repeated here.

Optionally, the circumferential turning points of the first inflatable section 31 are all set as arc transitions. This arrangement enables the first inflatable section 31 to be uniformly stressed throughout, preventing stress concentration and causing the first inflatable section 31 to rupture.

In this embodiment, as shown in FIG. 2 , the first inflatable section 31 extends from the lower left and upper right of the seat back in the figure, and extends for a certain distance in the direction of the rear seat. The first inflatable section 31 Each turning point of is set as an arc transition.

Optionally, the circumferential turning points of the second inflatable section 32 are all set as arc transitions. This arrangement enables the second inflatable section 32 to be uniformly stressed throughout, preventing stress concentration and causing the second inflatable section 32 to rupture.

In this embodiment, as shown in FIG. 3 , the second inflatable section 32 communicates with the right end of the first inflatable section 31 , and extends along the width direction of the seat on the rear side of the front seat 8 , so Each turning point of the second inflatable section 32 is set as an arc transition.

Optionally, a groove 5 is provided on one end surface of the second inflatable section 32 facing the front seat 8 . With this arrangement, when the vehicle collides, after the rear passenger collides with the second inflatable section 32 , the position corresponding to the groove 5 can be further buffered, thereby further protecting the rear passenger from injury.

In this embodiment, the side of the second inflatable section 32 facing the front seat 8, that is, the left end surface of the second inflatable section 32 in FIG. 3 is provided with the groove 5, and The cross section of the groove 5 is set in a semicircle, which is beneficial to the uniform distribution of the external force received. According to the actual application, the size and shape of the groove 5 can be adjusted.

Optionally, a filter (not shown) is provided in the accommodating cavity, and the filter is circumferentially connected to the inner wall of the accommodating cavity between the ignition agent and the exhaust port. This arrangement filters the gas generated by the combustion of the igniting agent to prevent debris from entering the air bag 3 together with the gas, preventing debris from cutting the air bag 3 and reducing the protection effect of the air bag 3 on passengers.

In this embodiment, the filter is in the form of a filter plate, the filter is arranged in the gas generator 1 between the ignition agent and the exhaust port, and the circumference of the filter is The circumferential fixed connection with the inner wall of the accommodating cavity ensures that all the gas generated by the combustion of the ignition agent can be discharged through the exhaust port after being filtered by the filter, and finally enter the air bag 3 . According to the actual application, the filter can be in any form, as long as the generated gas can be filtered and impurities in the gas can be prevented from entering the air bag 3 .

The present invention also provides an airbag assembly, which includes the airbag described in any of the above embodiments, and also includes a generator bracket 6 and a generator strap 7 . The generator bracket 6 is fixedly connected with the seat frame 4 of the front seat of the airbag 3 installed with the airbag; the generator strap 7 binds the gas generator 1 of the airbag to the front seat. on the generator bracket 6 .

With the airbag assembly of the present invention, the air bag 3 is arranged on the side wall of the front seat. After the air bag 3 is inflated and deployed, the air bag 3 can be placed on the side of the front seat by means of the first inflation section 31. Extending and expanding in the front-rear direction of the vehicle body protects the side of the front passenger from injury, and the second inflatable section 32 can extend and expand in front of the rear seat while protecting the front of the rear passenger from injury. The gas generator 1 is fixed on the seat frame 4 on which the air bag 3 is installed by means of the generator bracket 6 and the generator strap 7, which improves the integration degree of the airbag assembly and simplifies the The connection relationship between the gas generator 1 and the seat frame 4 is established.

In this embodiment, as shown in FIG. 1 , the generator bracket 6 extends along the width direction of the backrest of the seat frame 4 on which the airbag 3 is installed and is fixed to the backside of the seat frame 4 For connection, such as bolting or welding, the generator strap 7 wraps the gas generator 1 and the generator bracket 6 , and finally binds the gas generator 1 to the generator bracket 6 . According to the actual application, the shape and size of the generator bracket 6 can be adjusted, and the generator bracket 6 can be fixedly connected with the seat frame 4 in any way.

Optionally, the generator bracket 6 is detachably connected to the seat frame 4 of the front seat on which the air bag 3 is installed. This arrangement facilitates the maintenance or replacement of the generator support 6 .

In this embodiment, the generator bracket 6 and the seat frame 4 are connected by bolts.

Optionally, the airbag assembly further includes a crash intensity sensor (not shown) and a controller. The collision intensity sensor is fixedly connected to the vehicle body for monitoring the intensity of the collision; the input end of the controller is connected in communication with the output end of the collision intensity sensor, and the output end of the controller is connected to the ignition of the airbag The communication connection of the control side of the controller.

The collision intensity sensor is installed on the vehicle body, and is used to monitor the collision intensity when the vehicle collides, and transmit the collision intensity signal to the controller, and the controller receives the collision intensity signal and the preset intensity stored therein. The thresholds are compared. When the collision intensity signal is greater than or equal to the set intensity threshold, it indicates that the collision of the vehicle is strong, and the air bag 3 needs to be opened for protection. At this time, the controller outputs the ignition signal to the control of the igniter At the end, control the igniter to ignite, so that the igniter burns, and the combustion produces a large amount of gas. The gas is transmitted to the air bag 3 through the air duct 2, so that the air bag 3 rapidly expands and the front seat is in the front seat. 8 The side and front of the rear seats extend while protecting the sides of the front passengers and the front of the rear passengers. The controller controls the control logic of the ignition of the igniter according to the collision intensity signal monitored by the collision intensity sensor, which can be realized according to the existing mature algorithm.

Optionally, the airbag assembly further includes a safety collision sensor (not shown), the safety collision sensor is fixedly connected to the vehicle body, and the output end of the safety collision sensor is communicatively connected to the input end of the controller. This arrangement prevents the failure of the crash intensity sensor from causing the controller to erroneously control the ignition of the igniter, causing the air bag 3 to be opened by mistake.

The safety collision sensor also monitors the intensity of the vehicle collision, and transmits the monitored safety intensity signal to the controller, and the controller receives the safety intensity signal and compares it with an internally pre-stored set safety threshold, The set safety threshold is slightly smaller than the set intensity threshold. When the safety intensity signal is greater than or equal to the set safety threshold, and at the same time, the collision intensity signal is greater than or equal to the set intensity threshold, it indicates that the vehicle has encountered a strong collision, and the air bag 3 needs to be opened To protect personnel, at this time, the controller sends the ignition signal to the control end of the igniter, controls the igniter to ignite, and then ignites the igniter to generate a large amount of gas to fill the air bag 3, Inflate the air bag 3 on the sides of the front seats and in front of the rear seats; when the crash intensity signal is greater than or equal to the set intensity threshold, but the safety intensity signal is less than the set safety threshold , indicating that the collision intensity sensor is faulty. At this time, the vehicle does not have a strong collision, the controller does not output an ignition signal, and the air bag 3 does not open. According to actual application conditions, the set intensity threshold and the set safety threshold can be adjusted.

The following further introduces the use process of the airbag assembly:

When the vehicle collides, the collision intensity sensor detects the collision intensity signal and transmits it to the controller, the safety collision sensor detects the safety intensity signal and transmits it to the controller, and the controller will The collision intensity signal is compared with the internally pre-stored set intensity threshold, and the safety intensity signal is compared with the internally pre-stored set safety threshold. When the collision intensity signal is greater than or equal to the set When the safety intensity signal is greater than or equal to the set safety threshold, it indicates that the vehicle encounters a strong collision. At this time, the controller outputs an ignition signal to the control end of the igniter to control all The igniter is ignited, so that the ignition agent is burned, and the ignition agent is burned to generate a large amount of high-pressure gas, and the high-pressure gas enters the air bag 3 through the exhaust port of the gas generator 1 and the connected air conduit 2, The air bag 3 is inflated. After the air bag 3 is inflated, the first inflation section 31 of the air bag 3 extends and expands toward the front and rear of the vehicle body on the side of the front seat 8 on which the air bag 3 is installed, thereby protecting the front row. The side of the passenger is protected from impact damage, and the second inflatable section 32 communicated with the first inflatable section 31 extends and expands along the width direction of the rear seat between the front seat 8 and the rear seat, This protects the front of the rear passenger from impact damage.

With the airbag assembly of the present invention, the air bag 3 is arranged on the side wall of the front seat. After the air bag 3 is inflated and deployed, the air bag 3 can be placed on the side of the front seat by means of the first inflation section 31. Extending and expanding in the front-rear direction of the vehicle body protects the side of the front passenger from injury, and the second inflatable section 32 can extend and expand in front of the rear seat while protecting the front of the rear passenger from injury.

The present invention also provides a vehicle, comprising a body, a front row seat 8 and a rear row seat (not shown) installed in the body, and further comprising the airbag assembly described in any of the above embodiments, so The air bag 3 of the air bag assembly is fixedly connected to the side wall of the seat frame of the front seat 8, and the generator bracket 6 of the air bag assembly is connected to the front seat on which the air bag 3 is installed. The seat frame of the chair 8 is fixedly connected to the side facing the rear seat.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. an airbag, is characterized in that, comprises: A gas generator, an accommodating cavity is arranged inside the gas generator, and an igniter and an ignition agent are arranged in the accommodating cavity. After the control end of the igniter receives an ignition signal, the ignition agent is ignited, and the gas is generated. The device is provided with an exhaust port communicating with the accommodating cavity; an air duct, the air inlet of the air duct communicates with the exhaust port of the gas generator; An air bag, the air bag is fixedly connected to the side wall of the seat frame of the front seat, the air inlet of the air bag is communicated with the air outlet of the air duct, and after the air bag is filled with gas, it includes The first inflatable section and the second inflatable section are communicated, the first inflatable section extends from the side wall of the front seat on which the air bag is installed to the front of the vehicle body and the rear of the vehicle body, and the second inflatable section is connected to the One end of the first inflatable section facing the rear of the vehicle body is communicated and extends in the width direction of the rear seat between the front seat and the rear seat. 2. The airbag according to claim 1, wherein: The circumferential turning points of the first inflatable section are all set as arc transitions. 3. The airbag according to claim 1 or 2, characterized in that: The circumferential turning points of the second inflatable section are all set as arc transitions. 4. The airbag according to claim 1 or 2, characterized in that: A groove is provided on one end face of the second inflatable section facing the front seat. 5. The airbag according to claim 1 or 2, characterized in that: A filter is arranged in the accommodating cavity, and the filter is circumferentially connected with the inner wall of the accommodating cavity between the ignition agent and the exhaust port. 6. An airbag assembly, characterized in that, comprising the airbag of any one of claims 1-5, further comprising: a generator bracket, the generator bracket is fixedly connected with the seat frame of the front seat on which the airbag of the airbag is installed; A generator strap, which binds the gas generator of the airbag to the generator bracket. 7. The airbag assembly of claim 6, wherein: The generator bracket is detachably connected to the seat frame of the front seat on which the air bag is installed. 8. The airbag assembly of claim 6 or 7, further comprising: a collision intensity sensor, the collision intensity sensor is fixedly connected to the vehicle body, and is used to monitor the intensity of the collision; A controller, the input end of the controller is connected in communication with the output end of the collision intensity sensor, and the output end of the controller is connected in communication with the control end of the igniter of the airbag. 9. The airbag assembly of claim 8, further comprising: The safety collision sensor is fixedly connected with the vehicle body, and the output end of the safety collision sensor is connected in communication with the input end of the controller. 10. A vehicle, comprising a body and front seats and rear seats installed in the body, characterized in that further comprising the airbag assembly according to any one of claims 6-9, the The air bag of the air bag assembly is fixedly connected to the side wall of the seat frame of the front seat, and the generator bracket of the air bag assembly is connected to the seat frame of the front seat on which the air bag is installed The side facing the rear seat is fixedly connected.

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