Safety air bag and automobile

Abstract

The utility model provides a safety air bag and an automobile. In the safety air bag, a first blocking piece is arranged on the outer surface of an air bag body corresponding to a first air release opening, one side of the first blocking piece is fixed to the outer surface of the air bag body, and the other side of the first blocking piece is connected with a first pull belt. The first separation blade or the first drawstring extends into the inner cavity of the air bag body from the first drawstring opening and is connected to the fixed end of the drawstring reactor through the first drawstring; the fixing position of the first blocking piece and the first drawstring opening are located on the two opposite sides of the first air leakage opening respectively. When the drawstring reactor is in a tensioned state, the first drawstring is pulled, so that the first separation blade covers the first air outlet; and when the drawstring reactor is in a release state, the first drawstring is released, so that the first baffle plate covering the first air release port can be blown open under the air pressure impact of the inner cavity of the air bag body. According to the safety air bag, it is guaranteed that the safety air bag is simple in structure, and meanwhile it is avoided that when the safety air bag is unfolded, passengers with small weights or incorrect sitting postures are injured.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to an airbag and an automobile. Background Art

[0002] Cars have become an indispensable means of transportation for people's daily travel, and the safety performance of cars has attracted more and more attention. As an important part of the passive safety system of cars, the airbag's protective function directly affects the life safety of passengers.

[0003] The airbag includes an airbag body, in which a gas generator is installed; when the airbag is triggered, the gas generator inflates the inner cavity of the airbag body, causing the airbag body to expand and pop out, and using its flexibility to protect the passenger. However, the high-intensity air pressure in the inner cavity of the airbag body will always exert force on the airbag wall, and the airbag body has a strong impact force when it is deployed. If the passenger is light or has an incorrect sitting posture, the deployed airbag body can easily hit the passenger and cause injury, and it can also easily cause the airbag wall to always press tightly against the passenger's mouth and nose, hindering the passenger's normal breathing, which will cause secondary accidents. Therefore, how to prevent injuries to passengers with light weight or incorrect sitting posture when the airbag is deployed has become a technical problem that needs to be solved. Utility Model Content

[0004] The present application provides an airbag to solve at least one of the above technical problems. The present application also provides a car using the airbag.

[0005] The present application provides a safety airbag, the safety airbag comprising: an airbag body and a pull belt reactor;

[0006] The airbag wall of the airbag body is provided with a first air release port and a first drawstring port;

[0007] A first baffle is provided on the outer surface of the airbag body corresponding to the first air release port, one side of the first baffle is fixed on the outer surface of the airbag body, and the other side of the first baffle is connected to the first drawstring, the first baffle or the first drawstring extends from the first drawstring port into the inner cavity of the airbag body and is connected to the fixed end of the drawstring reactor through the first drawstring; the fixed position of the first baffle and the first drawstring port are respectively located on opposite sides of the first air release port;

[0008] When the drawstring reactor is in a tensioned state, the first drawstring is pulled so that the first baffle covers the first air vent; when the drawstring reactor is in a released state, the first drawstring is loosened so that the first baffle covering the first air vent can be blown open by the air pressure impact in the inner cavity of the airbag body, thereby releasing the cover on the first air vent.

[0009] Optionally, a second air release port and a second drawstring port are further provided on the air bag wall of the air bag body, and the second air release port is separated from the first air release port by a preset distance;

[0010] A second baffle is provided on the outer surface of the airbag body at a position corresponding to the second air release port, one side of the second baffle is fixed on the outer surface of the airbag body, and the other side of the second baffle is connected to the second drawstring, the second baffle or the second drawstring extends from the second drawstring port into the inner cavity of the airbag body and is connected to the fixed end of the drawstring reactor through the second drawstring traction; the fixed position of the second baffle and the second drawstring port are respectively located on opposite sides of the second air release port;

[0011] When the drawstring reactor is in a tensioned state, the second drawstring is pulled so that the second baffle covers the second air vent; when the drawstring reactor is in a released state, the second drawstring is loosened so that the second baffle covering the second air vent can be blown open by the air pressure impact in the inner cavity of the airbag body, thereby releasing the cover on the second air vent.

[0012] Optionally, the first drawstring opening and the second drawstring opening are the same drawstring opening, and / or the first drawstring and the second drawstring are the same drawstring; when the first drawstring opening and the second drawstring opening are the same drawstring opening, the two are collectively referred to as the drawstring opening.

[0013] Optionally, a third pull strap is also included, and one end of the first pull strap not connected to the first baffle and one end of the second pull strap not connected to the second baffle are connected to one end of the third pull strap, and the other end of the third pull strap is connected to the fixed end of the pull strap reactor.

[0014] Optionally, when the first drawstring opening and the second drawstring opening are the same drawstring opening, the drawstring opening is located between the first air release opening and the second air release opening.

[0015] Optionally, the first air relief port and the second air relief port are both located between the fixed position of the first baffle and the fixed position of the second baffle;

[0016] Alternatively, the fixed position of the first baffle and / or the fixed position of the second baffle is located between the first air relief port and the second air relief port.

[0017] Optionally, a blocking knot is provided on the first draw strap, the second draw strap and / or the third draw strap, and the blocking knot is located in the inner cavity of the airbag body; when the first baffle and / or the second baffle are blown open under the impact of air pressure in the inner cavity of the airbag body, the blocking knot moves to the first draw strap opening and / or the second draw strap opening and is stuck, so that the first baffle and / or the second baffle cannot be completely blown open and thus play a partial covering role.

[0018] Optionally, a rotatable winding mechanism is provided on the belt reactor, and the first belt, the second belt and / or the third belt are wound on the winding mechanism; when the belt reactor is in a tensioned state, the winding mechanism is locked and cannot rotate; when the belt reactor is in a released state, the winding mechanism is unlocked and can rotate.

[0019] Optionally, a shear structure is provided on the pull-belt reactor, and the first pull-belt, the second pull-belt and / or the third pull-belt are fixedly connected to the pull-belt reactor through the shear structure; when the pull-belt reactor is in a tensioned state, the shear structure does not perform a shearing action; when the pull-belt reactor is in a released state, the shear structure performs a shearing action to loosen the first pull-belt, the second pull-belt and / or the third pull-belt.

[0020] The present application also provides a car, which comprises any feasible safety airbag as described above.

[0021] Compared with the prior art, this application has the following advantages:

[0022] The present application provides a safety airbag, which includes: an airbag body and a drawstring reactor; a first air release port and a first drawstring port are arranged on the airbag wall of the airbag body; a first baffle is arranged on the outer surface of the airbag body corresponding to the first air release port, one side of the first baffle is fixed on the outer surface of the airbag body, and the other side of the first baffle is connected to the first drawstring, the first baffle or the first drawstring extends into the inner cavity of the airbag body from the first drawstring port and is connected to the fixed end of the drawstring reactor through the first drawstring; the fixed position of the first baffle and the first drawstring port are respectively located on opposite sides of the first air release port; when the drawstring reactor is in a tensioned state, the drawstring reactor pulls the first drawstring so that the first baffle covers the first air release port; when the drawstring reactor is in a released state, the first drawstring is loosened so that the first baffle covering the first air release port can be blown open under the impact of air pressure in the inner cavity of the airbag body, thereby releasing the coverage of the first air release port.

[0023] In this type of airbag, when the airbag body is inflated in a car collision, the first baffle covers the first air vent to prevent gas leakage. When the airbag body is inflated, the passenger can be detected by the detection device. If the passenger is light or sitting in an incorrect posture, the drawstring reactor is controlled to loosen the first drawstring, so that the first baffle can release the cover of the first air vent, allowing the gas to escape from the first air vent, thereby reducing the air pressure in the inner cavity of the airbag body, reducing the impact on the passenger when the airbag body is deployed, and avoiding injuries to passengers with light weight or incorrect sitting posture when the airbag is deployed. It will not cause the airbag wall to squeeze the human body, thereby avoiding the long-term blocking of the human mouth and nose by the airbag wall, avoiding obstruction of passenger breathing, and thus avoiding secondary accidents. At the same time, the method of threading the first drawstring with the first baffle has the advantages of simple structure, easy installation, and low price. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a drawstring reactor of an airbag provided in an embodiment of the present application when it is in a tensioned state.

[0025] Figure 2It is a schematic structural diagram of a drawstring reactor of an airbag provided in an embodiment of the present application when it is in a released state.

[0026] Figure 3 It is a schematic diagram of the state of a drawstring reactor and a drawstring of an airbag provided in an embodiment of the present application when the drawstring reactor is in a tensioned state.

[0027] Figure 4 It is a schematic diagram of the states of a drawstring reactor and a drawstring of an airbag provided in an embodiment of the present application when the drawstring reactor is in a released state.

[0028] Figure 5 It is a schematic structural diagram of an airbag body of an airbag provided in an embodiment of the present application.

[0029] Figure 6 It is a cross-sectional view of a first baffle of an airbag provided by an embodiment of the present application extending into a first drawstring opening and covering a first air release opening.

[0030] Figure 7 It is a structural schematic diagram of a first drawstring and a second drawstring connected to a third drawstring provided in an embodiment of the present application.

[0031] Reference numerals:

[0032] Airbag body 10; first air release port 11; first drawstring port 12; second air release port 13;

[0033] A first baffle 21; a second baffle 22;

[0034] A first drawstring 31; a second drawstring 32; a third drawstring 33;

[0035] Belt reactor 40; winding mechanism 41;

[0036] Gas generator 50. DETAILED DESCRIPTION

[0037] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0038] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] An airbag generally includes an airbag body equipped with a gas generator. When the airbag is triggered, the gas generator inflates the inner cavity of the airbag body, causing the airbag body to expand and pop out, and use its flexibility to protect the passenger. However, the high-intensity air pressure in the inner cavity of the airbag body will always exert force on the airbag wall, and the airbag body has a strong impact force when it is deployed. If the passenger is light or has an incorrect sitting posture, the deployed airbag body can easily hit the passenger and cause injury. It can also easily cause the airbag wall to always press tightly against the passenger's mouth and nose, hindering the passenger's normal breathing, which will cause secondary accidents. Therefore, how to prevent injuries to passengers with light weight or incorrect sitting posture when the airbag is deployed has become a technical problem to be solved.

[0041] In order to solve the above problems, this embodiment provides a feasible safety airbag. In this safety airbag, a first air release port is arranged on the airbag wall of the airbag body, and a first baffle that can cover the first air release port is arranged on the outer surface of the airbag body, and the first baffle is pulled by the first drawstring connected to the drawstring reactor. When the airbag body is inflated, the first baffle covers the first air release port to prevent gas leakage. When the airbag body is inflated, the passenger can be detected by the detection device. If the passenger is light in weight or sitting in an incorrect posture, the drawstring reactor is controlled to loosen the first drawstring, so that the first baffle can release the cover of the first air release port, so that the gas can be released from the first air release port, thereby reducing the air pressure in the inner cavity of the airbag body, reducing the impact on the passenger when the airbag body is inflated and deployed, and preventing the safety airbag from causing harm to passengers with light weight or sitting in an incorrect posture. It will not cause the airbag wall to squeeze the human body, avoid the airbag wall to block the human mouth and nose for a long time, and avoid the passenger's breathing being blocked, thereby avoiding secondary accidents. At the same time, the method of passing the first baffle through the first drawstring has the advantages of simple structure, easy installation, low price, etc.

[0042] Such airbags as Figure 1 , Figure 2 and Figure 5 and Figure 6 As shown, Figure 1 It is a structural schematic diagram of a drawstring reactor of an airbag provided in an embodiment of the present application when it is in a tensioned state. Figure 2 It is a schematic structural diagram of a drawstring reactor of an airbag provided in an embodiment of the present application when it is in a released state. Figure 5It is a schematic structural diagram of an airbag body of an airbag provided in an embodiment of the present application. Figure 6 The first baffle of a safety airbag provided by an embodiment of the present application extends into the first drawstring opening and covers the first deflation opening. As shown in the figure, the safety airbag includes: an airbag body 10 and a drawstring reactor 40.

[0043] The airbag body 10 is a bag-like structure surrounded by airbag walls. The airbag walls are generally made of nylon or polyester fabrics, etc., which have high strength and durability and can withstand the impact force generated during a collision. After the inner cavity of the airbag body 10 is inflated, the airbag body 10 will expand under the action of air pressure to form a buffer structure that supports the human body.

[0044] The airbag body 10 is provided with an air inlet, and a gas generator 50 responsible for generating and outputting gas extends from the air inlet into the inner cavity of the airbag body 10, and the gas generator 50 can also be directly installed in the inner cavity of the airbag body 10. When the gas generator 50 generates and outputs gas, the gas enters the inner cavity of the airbag body 10 for inflation.

[0045] like Figure 5 As shown, a first air vent 11 and a first drawstring port 12 are provided on the airbag wall of the airbag body 10. A first baffle 21 located at the first air vent 11 is provided on the outer surface of the airbag body 10, one side of the first baffle 21 is fixed on the outer surface of the airbag body 10, and the other side of the first baffle 21 is connected to the first drawstring 31, and the first baffle 21 or the first drawstring 31 extends from the first drawstring port 12 into the inner cavity of the airbag body 10 and is connected to the fixed end of the drawstring reactor 40 through the first drawstring 31; the fixed position of the first baffle 21 and the first drawstring port 12 are respectively located on the opposite sides of the first air vent 11.

[0046] The first air release port 11 is an outlet for releasing the gas in the inner cavity of the airbag body 10 , and can be an air release slit directly cut on the inner wall of the airbag body 10 , or a preset opening of a circular, diamond or other preset shape.

[0047] The first drawstring opening 12 is an opening for the first drawstring 31 to enter the inner cavity of the airbag body 10. The first drawstring 31 is a flexible belt rope that applies tension to the first baffle 21. The specific shape and size of the first drawstring opening 12 correspond to the shape and size of the first drawstring 31. For example, when the first drawstring 31 is a cylindrical flexible string, the first drawstring opening 12 can be correspondingly set to a circular through hole that can pass through the string. The opening size of the first drawstring opening 12 is usually set to be much smaller than the opening size of the first venting port 11 to prevent excessive escape of gas from the first drawstring opening 12.

[0048] The first baffle 21 is a cut piece structure for covering the first air vent 11, which is arranged on the outer surface of the airbag body 10, and one side of the first baffle 21 is fixed to one side of the first air vent 11, and the other side of the first baffle 21 is connected to the drawstring reactor 40 through the first drawstring 31, so that the first baffle 21 located at the first air vent 11 can cover the first air vent 11 under the action of the first drawstring 31.

[0049] And, if Figure 6 As shown, the first baffle 21 can be pulled into the first drawstring opening 12 by the first drawstring 31 to cover the first air release opening 11. Alternatively, the first baffle 21 can also be pulled by the first drawstring 31 and tightly attached to the outer wall of the airbag body 10 to cover the first air release opening 11 without being pulled into the first drawstring opening 12.

[0050] The belt reactor 40 is a device for tightening or loosening the belt, and has a tightening state and a releasing state. The tightening state refers to the state in which the belt reactor 40 tightens the first belt 31 so as to pull the first baffle 21 to cover the first air vent 11, and the releasing state refers to the state in which the belt reactor 40 loosens the first belt 31 so that the first baffle 21 can be blown open.

[0051] The tensioned state and the released state of the drawstring reactor 40 can be switched by electronic control, and the drawstring reactor 40 can be used in conjunction with a detection device, so that when the detection device detects that the passenger is light in weight or has an incorrect sitting posture, the drawstring reactor 40 is controlled to be in a released state, and when the detection device detects that the passenger is of normal weight or has a normal sitting posture, the drawstring reactor 40 is controlled to be in a tensioned state.

[0052] The detection device may include a sensor, a sitting posture recognition system, etc. When the detection device includes a sensor, the sensor may determine that the passenger is light in weight when it detects that the passenger's weight is less than a preset value, and determine that the passenger is of normal weight when it detects that the passenger's weight is not less than a preset value. When the detection device includes a sitting posture recognition system, the sitting posture recognition system may determine that the passenger's sitting posture is normal when it detects that the passenger is located in a preset sitting posture area, and determine that the passenger is sitting in an incorrect posture when it detects that the passenger is located outside the preset sitting posture area. Of course, the method for determining the passenger's weight and sitting posture may be any other feasible method, which is not limited here.

[0053] When the belt reactor 40 is in a tensioned state, Figure 1 As shown, the pull belt reactor 40 pulls the first pull belt 31, so that the first baffle 21 covers the first air release port 11. When the pull belt reactor 40 is in the release state, as shown in FIG. Figure 2 As shown, the drawstring reactor 40 releases the first drawstring 31 , so that the first blocking sheet 21 covering the first air leakage port 11 can be blown open under the impact of the air pressure in the inner cavity of the airbag body 10 , thereby releasing the cover on the first air leakage port 11 .

[0054] It should be clear that the first drawstring 31 extends from the first drawstring opening 12 into the inner cavity of the airbag body 10 and is connected to the drawstring reactor 40, so that the pulling force of the first drawstring 31 on the first baffle 21 comes from the inner cavity of the airbag body, thereby ensuring the sealing effect when the first baffle 21 covers the first air release opening 11. In a specific embodiment, there are many installation positions of the drawstring reactor 40, which can be installed together with the gas generator or set at other positions, and it is only necessary to make the first drawstring 31 pull the first baffle 21 from the inner cavity of the airbag body 10.

[0055] Furthermore, there are many specific ways to fix the first drawstring 31. For example, one end of the first drawstring 31 can be fixedly connected to the drawstring reactor 40, and the other end can be directly fixed to the first baffle 21. Alternatively, one end of the first drawstring 31 is connected to the drawstring reactor 40, and the other end is fixed to the outer wall or inner wall of the airbag body 10, and the first drawstring 31 is passed through, adhered or sewn on the first baffle 21 to pull the first baffle 21. Furthermore, there are many ways to pass the first drawstring 31 through the first air vent 11, such as the first drawstring 31 can pass through the first air vent 11 from the inner cavity of the airbag body 10 to complete the connection, or the first drawstring 31 can also pass through the first air vent 11 from the outside and extend into the inner cavity of the airbag body 10 to complete the connection, which is not limited here.

[0056] There are many ways to set up the structure of the belt reactor 40. One feasible way to set up the structure is as follows: Figure 3 and Figure 4 As shown, Figure 3 It is a schematic diagram of the state of a drawstring reactor and a drawstring of an airbag provided in an embodiment of the present application when the drawstring reactor is in a tensioned state. Figure 4 The present invention provides a schematic diagram of the state of a belt reactor and a belt when the belt reactor of an airbag is in a released state. The belt reactor 40 is provided with a rotatable winding mechanism 41, and the first belt 31 is wound on the winding mechanism 41; when the belt reactor 40 is in a tensioned state, the winding mechanism 41 is locked and cannot rotate; when the belt reactor 40 is in a released state, the winding mechanism 41 is unlocked and can rotate.

[0057] This type of belt reactor 40 can be implemented in a variety of ways provided by the prior art. For example, it can be implemented by using an electromagnetic brake pad. When the belt reactor 40 is in a tensioned state, the electromagnetic coil is energized, the electromagnetic brake pad is braked, and the winding mechanism 41 cannot rotate due to the action of the brake pad; when the belt reactor 40 is in a released state, the electromagnetic brake pad is loosened due to power failure, and the winding mechanism 41 can rotate freely because the brake pad does not work.

[0058] In the belt reactor 40 of this structure, the winding mechanism 41 can be a rotatable cylindrical structure. When the belt reactor 40 is in a tensioned state, the winding mechanism 41 is stuck, and a part of the first belt 31 is wound around the winding mechanism 41, so that the first belt 31 maintains the force on the first baffle 21, so that the first baffle 21 always covers the first air release port 11. When the belt reactor 40 is switched from the tensioned state to the released state, the winding mechanism 41 becomes rotatable, and the part of the first belt 31 wound around the winding mechanism 41 can be pulled away, so that the first belt 31 can be pulled out from the first belt port 12, so that the first baffle 21 is no longer restricted by the first belt 31, so that the first baffle 21 can be blown open under the impact of air pressure.

[0059] In another feasible structural setting, a shear structure is provided on the belt reactor 40, and the first belt 31, the second belt 32 and / or the third belt 33 are fixedly connected to the belt reactor 40 through the shear structure; when the belt reactor 40 is in a tensioned state, the shear structure does not perform a shearing action; when the belt reactor 40 is in a released state, the shear structure performs a shearing action to loosen the first belt 31, the second belt 32 and / or the third belt 33.

[0060] In the belt reactor 40 of this structure, when the first belt 31 is in a tensioned state, the first belt 31 is fixedly connected to the belt reactor 40 and always provides tension to the first baffle 21, so that the first baffle 21 always covers the first air vent 11. When the belt is switched from a tensioned state to a released state, the first belt 31 is cut off by the shear structure, and the first baffle 21 is no longer restricted by the first belt 31, so that the first baffle 21 can be blown open under air pressure inflation.

[0061] The above-mentioned shearing structure can be implemented in different ways. For example, the drawstring passes through a shearing opening, one end of which is arranged on a telescopic rod that can be extended. When the telescopic rod retracts under the action of electromagnetic force, the blade edge relative to the shearing opening shrinks and overlaps, shortening the drawstring passing through this point, thereby executing the shearing action.

[0062] In this embodiment, after the first drawstring 31 is released by the drawstring reactor 40, if the first drawstring 31 is completely in an unrestricted free state, the first baffle 21 will be directly and completely blown open under the impact of the air pressure in the inner cavity of the airbag body 10, and the deflation process is rapid and without buffering, which may cause the passenger experience to be poor due to the too rapid deflation process. In this regard, in another embodiment, a blocking knot can be set on the first drawstring 31 to avoid the first baffle 21 from being completely blown open and reduce the deflation rate.

[0063] A feasible implementation is that a blocking knot is provided on the first draw tape 31, and the blocking knot is located in the inner cavity of the airbag body 10; when the first baffle 21 is blown open under the impact of the air pressure in the inner cavity of the airbag body 10, the blocking knot moves to the first draw tape mouth 12 and is stuck by the first draw tape mouth 31, so that the first baffle 21 cannot be completely blown open and thus plays a partial covering role.

[0064] In this embodiment, the blocking knot can be a structure such as a rope knot set on the first drawstring 31, so as to block the process of the first drawstring 31 being pulled out of the inner cavity of the airbag body 10 by the first baffle 21. That is to say, after the drawstring reactor 40 releases the first drawstring 31, the first baffle 21 is blown open under the impact of air pressure. During the process of the first baffle 21 being blown open, the first drawstring 31 will be pulled outward from the first drawstring port 12. However, during this process, the blocking knot on the first drawstring 31 will be stuck by the first drawstring port 12, so that the process of the first drawstring 31 being blown open is restricted, so that the first baffle 21 will not be completely blown open. At this time, although the first baffle 21 no longer covers the first air release port 11, the first baffle 21 still partially blocks the first air release port 11, thereby producing a partial covering effect, thereby limiting the gas release rate and slowing down the air release process.

[0065] In addition, in this embodiment, in addition to the first air release port 11, more air release ports such as the second air release port 13 and the third air release port may be provided to release air to enhance the air release effect. The second air release port 13 is taken as an example for further description.

[0066] A specific implementation of setting the second air release port 13 can be that the airbag wall of the airbag body 10 is also provided with a second air release port 13 and a second drawstring port, and the second air release port 13 is separated from the first air release port 11 by a preset distance; a second baffle 22 is provided on the outer surface of the airbag body 10 corresponding to the second air release port 13, one side of the second baffle 22 is fixed on the outer surface of the airbag body 10, and the other side of the second baffle 22 is connected to the second drawstring 32, the second baffle 22 or the second drawstring 32 extends into the inner cavity of the airbag body 10 from the second drawstring port and is connected to the fixed end of the drawstring reactor 40 through the second drawstring 32; the fixed position of the second baffle 22 and the second drawstring port are respectively located on the opposite sides of the second air release port 13.

[0067] When the pull-belt reactor 40 is in a tensioned state, the pull-belt reactor 40 pulls the first pull strap 31 and the second pull strap 32, so that the first baffle 21 and the second baffle 22 cover the first air vent 11 and the second air vent 13; when the pull-belt reactor 40 is in a released state, the pull-belt reactor 40 loosens the first pull strap 31 and the second pull strap 32, so that the first baffle 21 covering the first air vent 11 can be blown away under the impact of the air pressure in the inner cavity of the airbag body 10, thereby releasing the coverage of the first air vent 11 and the second air vent 13.

[0068] In this embodiment, the second air vent 13 is arranged in a similar manner to the first air vent 11, and a second baffle 22 that can cover the second air vent 13 is arranged at the second air vent 13. In addition, one side of the second baffle 22 is also fixed to one side of the second air vent 13, and the other side of the second baffle 22 is also connected to the belt reactor 40 through a belt, so that the first baffle 21 and the second baffle 22 are simultaneously controlled by the belt reactor 40.

[0069] Among them, the first drawstring opening 12 and the second drawstring opening can be as follows Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it is set as the same drawstring opening, or it can be set as two different drawstring openings with differences. Similarly, the first drawstring 31 and the second drawstring 32 can be the same drawstring or different drawstrings.

[0070] In a feasible implementation manner, the first drawstring opening 12 and the second drawstring opening are the same drawstring opening, and / or the first drawstring 31 and the second drawstring 32 are the same drawstring; when the first drawstring opening 12 and the second drawstring opening are the same drawstring opening, the two are collectively referred to as a drawstring opening.

[0071] When the first drawstring opening 12 and the second drawstring opening are the same drawstring opening, and the first drawstring 31 and the second drawstring 32 are the same drawstring, the connection method of the second baffle 22 is actually equivalent to that one side of the second baffle 22 is fixed on the outer surface of the airbag body 10, and the other side of the second baffle 22 is connected to the first drawstring 31.

[0072] When the first draw strap opening 12 and the second draw strap opening are the same draw strap opening, and the first draw strap 31 and the second draw strap 32 are different draw straps, the connection method of the second baffle 22 is actually equivalent to that one side of the second baffle 22 is fixed on the outer surface of the airbag body 10, and the other side of the second baffle 22 is connected to the second draw strap 32, and the second draw strap 32 extends from the first draw strap opening 12 into the inner cavity of the airbag body 10 and is connected to the draw strap reactor 40; the fixed position of the second baffle 22 and the first draw strap opening 12 are respectively located on the opposite sides of the second air vent 13.

[0073] When the first draw strap opening 12 and the second draw strap opening are different draw strap openings, and the first draw strap 31 and the second draw strap 32 are the same draw straps, the connection method of the second baffle 22 is actually equivalent to that one side of the second baffle 22 is fixed on the outer surface of the airbag body 10, and the other side of the second baffle 22 is connected to the first draw strap 31. The first draw strap 31 can pass through one of the first draw strap opening 12 and the second draw strap opening and extend into the inner cavity of the airbag body 10 and be connected to the draw strap reactor 40.

[0074] In another feasible embodiment, the first drawstring opening 12 and the second drawstring opening are different drawstring openings, and the first drawstring 31 and the second drawstring 32 are also different drawstrings. In this embodiment, the connection method of the second baffle 22 is actually equivalent to that one side of the second baffle 22 is fixed on the outer surface of the airbag body 10, and the other side of the second baffle 22 is connected to the second drawstring 32, and the second drawstring 32 extends from the second drawstring opening into the inner cavity of the airbag body 10 and is connected to the drawstring reactor 40; the fixing position of the second baffle 22 and the second drawstring opening are respectively located on the opposite sides of the second vent 13.

[0075] Further, when the first baffle 21 is connected to the belt reactor 40 through the first belt 31, and the second baffle 22 is connected to the belt reactor 40 through the second belt 32, the first belt 31 and the second belt 32 can be connected to the belt reactor 40 respectively. Alternatively, the first belt 31 and the second belt 32 can be connected to the third belt 33, and connected to the belt reactor 40 through the third belt 33. The specific implementation is as follows: Figure 7 As shown, Figure 7 It is a structural schematic diagram of a first drawstring and a second drawstring connected to a third drawstring provided in an embodiment of the present application.

[0076] Among them, one end of the first pull belt 31 not connected to the first baffle 21 and one end of the second pull belt 32 not connected to the second baffle 22 are jointly connected to one end of the third pull belt 33, and the other end of the third pull belt 33 is connected to the fixed end of the pull belt reactor 40.

[0077] Furthermore, when the above-mentioned second draw tape 32 is provided, a blocking knot can also be provided on the second draw tape 32. Specifically, a blocking knot is provided on the second draw tape 32, and the blocking knot is located in the inner cavity of the airbag body 10; when the second baffle 22 is blown open under the impact of the air pressure in the inner cavity of the airbag body 10, the blocking knot moves to the second draw tape opening and is stuck by the second draw tape opening, so that the second baffle 22 cannot be completely blown open and thus plays a partial covering role.

[0078] Similarly, when the above-mentioned third draw tape 33 is provided, a blocking knot can also be provided on the third draw tape 33. Specifically, a blocking knot is provided on the third draw tape 33, and the blocking knot is located in the inner cavity of the airbag body 10; when the first baffle 21 and the second baffle 22 are blown open under the impact of the air pressure in the inner cavity of the airbag body 10, the blocking knot moves to the first draw tape mouth 12 or the second draw tape mouth and is stuck, so that the first baffle 21 and the second baffle 22 cannot be completely blown open and thus play a partial covering role.

[0079] Furthermore, when the second and third pull belts are provided, if the structures of the pull belt reactors are different, the installation methods of the pull belts are also different.

[0080] A winding mechanism 41 is provided on the belt reactor 40, and the above-mentioned second belt 32 is provided, that is, when the second baffle 22 is connected to the belt reactor 40 through the second belt 32, the belt can be installed in a manner that a rotatable winding mechanism 41 is provided on the belt reactor 40, and the first belt 31 and the second belt 32 are wound around the winding mechanism 41; when the belt reactor 40 is in a tensioned state, the winding mechanism 41 is locked and cannot rotate; when the belt reactor 40 is in a released state, the winding mechanism 41 is unlocked and can rotate.

[0081] The belt reactor is configured as a winding mechanism, and the above-mentioned third belt 33 is provided, that is, when the first belt 31 and the second belt 32 are connected to the belt reactor 40 through the third belt 33, the belt can be installed in such a way that a rotatable winding mechanism 41 is provided on the belt reactor 40, and the third belt 33 is wound on the winding mechanism 41; when the belt reactor 40 is in a tensioned state, the winding mechanism 41 is locked and cannot rotate; when the belt reactor 40 is in a released state, the winding mechanism 41 is unlocked and can rotate.

[0082] Similarly, when a shearing structure is provided on the belt reactor 40 and the above-mentioned second belt 32 is provided, the belt can be installed in such a way that the first belt 31 and the second belt 32 are fixedly connected to the belt reactor 40 through the shearing structure; when the belt reactor 40 is in a tensioned state, the shearing structure does not perform a shearing action; when the belt reactor 40 is in a released state, the shearing structure performs a shearing action to loosen the first belt 31 and the second belt 32.

[0083] When a shearing structure is provided on the belt reactor 40 and the above-mentioned third belt 33 is provided, the belt can be installed in such a way that the third belt 33 is fixedly connected to the belt reactor 40 through the shearing structure; when the belt reactor 40 is in a tensioned state, the shearing structure does not perform a shearing action; when the belt reactor 40 is in a released state, the shearing structure performs a shearing action to loosen the third belt 33, thereby loosening the first belt 31 and the second belt 32.

[0084] In addition, when the second air vent 13 is provided, there are many ways to provide the first air vent 11, the second air vent 13, the fixed position of the first baffle 21, and the fixed position of the second baffle 22. Specifically, the first air vent 11 and the second air vent 13 can be provided so that both the first air vent 11 and the second air vent 13 are located between the fixed position of the first baffle 21 and the fixed position of the second baffle 22; or the fixed position of the first baffle 21 and / or the fixed position of the second baffle 22 are located between the first air vent 11 and the second air vent 13.

[0085] The first drawstring opening 12 and the second drawstring opening can be further configured, such as Figure 2 and Figure 5As shown, when the first draw strap opening 12 and the second draw strap opening are the same draw strap opening, the draw strap opening can be located between the first air vent 11 and the second air vent 13, so that no matter whether the first draw strap 31 and the second draw strap 32 are the same draw strap, it is convenient for the draw strap to pass through the draw strap opening and ensure that the first baffle 21 and the second baffle 22 can effectively cover the first air vent 11 and the second air vent 13 at the same time.

[0086] In the airbag provided by the above embodiment, when the airbag body 10 is inflated in a collision with a car, the first baffle 21 covers the first air release port to prevent gas leakage. When the airbag body is inflated, the passenger can be detected by the detection device. If the passenger is light in weight or sitting in an incorrect posture, the drawstring reactor 40 is controlled to loosen the first drawstring 31, so that the first baffle 21 can be released from the first air release port 11, so that the gas can be released from the first air release port 11, thereby reducing the air pressure in the inner cavity of the airbag body 10, reducing the impact on the passenger when the airbag body is deployed, and preventing the airbag from causing harm to passengers with light weight or sitting in an incorrect posture. It will not cause the airbag wall to squeeze the human body, thereby avoiding the long-term blocking of the human mouth and nose by the airbag wall, avoiding the obstruction of the passenger's breathing, and thus avoiding secondary accidents. At the same time, the way in which the first baffle 21 passes through the first drawstring 31 has the advantages of simple structure, easy installation, and low price.

[0087] The first embodiment above describes the safety airbag. Correspondingly, the second embodiment below provides a car including any feasible safety airbag in the first embodiment above, as follows.

[0088] The present embodiment provides an automobile, wherein the safety airbag of the automobile comprises: an airbag body and a drawstring reactor; a first air vent and a first drawstring port are arranged on the airbag wall of the airbag body; a first baffle is arranged on the outer surface of the airbag body corresponding to the first air vent, one side of the first baffle is fixed on the outer surface of the airbag body, and the other side of the first baffle is connected to the first drawstring, the first baffle or the first drawstring extends into the inner cavity of the airbag body from the first drawstring port and is connected to the fixed end of the drawstring reactor through the first drawstring; the fixed position of the first baffle and the first drawstring port are respectively located on the opposite sides of the first air vent.

[0089] When the drawstring reactor is in a tensioned state, the first drawstring is pulled so that the first baffle covers the first air vent; when the drawstring reactor is in a released state, the first drawstring is loosened so that the first baffle covering the first air vent can be blown open by the air pressure impact in the inner cavity of the airbag body, thereby releasing the cover on the first air vent.

[0090] The specific implementation of the airbag in this embodiment is similar to that of the airbag in the first embodiment. Please refer to the relevant contents of the first embodiment for details, and no unnecessary details will be given here.

[0091] It should be noted that, although several structures, components or units for realizing related functions are mentioned in the above detailed description, such division is not mandatory. In fact, according to the specific implementation of the present application, the features and functions of two or more structures, components or units described above can be concretized in one structure, component or unit. Conversely, the features and functions of one structure, component or unit described above can be further divided into multiple components, structures or units to be concretized.

[0092] In addition, although the components and the installation methods of the components or devices in the present application are described in a specific order in the drawings, this does not require or imply that the components or devices must be designed according to the specific components or the installation methods of the components, or that all the components shown must be included to achieve the desired results. Additionally or alternatively, some components can be omitted, multiple components can be combined into one component to achieve corresponding functions, and / or one component can be decomposed into multiple components to achieve corresponding functions, etc.

[0093] Although the present application is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present application. Any technical personnel in this field may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

Claims

1. A safety airbag, characterized in that: The safety airbag comprises: an airbag body and a pull belt reactor; The airbag wall of the airbag body is provided with a first air release port and a first drawstring port; A first baffle is provided on the outer surface of the airbag body corresponding to the first air release port, one side of the first baffle is fixed on the outer surface of the airbag body, the other side of the first baffle is connected to the first drawstring, the first baffle or the first drawstring extends from the first drawstring port into the inner cavity of the airbag body and is connected to the fixed end of the drawstring reactor through the first drawstring; the fixed position of the first baffle and the first drawstring port are respectively located on opposite sides of the first air release port; When the drawstring reactor is in a tensioned state, the first drawstring is pulled so that the first baffle covers the first air vent; when the drawstring reactor is in a released state, the first drawstring is loosened so that the first baffle covering the first air vent can be blown open by the air pressure impact in the inner cavity of the airbag body, thereby releasing the cover on the first air vent.

2. The airbag according to claim 1, characterized in that: The airbag wall of the airbag body is also provided with a second air release port and a second drawstring port, and the second air release port is separated from the first air release port by a preset distance; A second baffle is provided on the outer surface of the airbag body at a position corresponding to the second air leakage port, one side of the second baffle is fixed on the outer surface of the airbag body, the other side of the second baffle is connected to the second drawstring, the second baffle or the second drawstring extends from the second drawstring port into the inner cavity of the airbag body and is connected to the fixed end of the drawstring reactor through the second drawstring traction; the fixed position of the second baffle and the second drawstring port are respectively located on opposite sides of the second air leakage port; When the drawstring reactor is in a tensioned state, the second drawstring is pulled so that the second baffle covers the second air vent; when the drawstring reactor is in a released state, the second drawstring is loosened so that the second baffle covering the second air vent can be blown open by the impact of air pressure in the inner cavity of the airbag body, thereby releasing the cover on the second air vent.

3. The airbag according to claim 2, characterized in that: The first draw strap opening and the second draw strap opening are the same draw strap opening, and / or the first draw strap and the second draw strap are the same draw strap; when the first draw strap opening and the second draw strap opening are the same draw strap opening, the two are collectively referred to as draw strap openings.

4. The airbag according to claim 2, characterized in that: It also includes a third pull strap, wherein one end of the first pull strap not connected to the first baffle and one end of the second pull strap not connected to the second baffle are connected together to one end of the third pull strap, and the other end of the third pull strap is connected to the fixed end of the pull strap reactor.

5. The airbag according to claim 3, characterized in that: When the first drawstring opening and the second drawstring opening are the same drawstring opening, the drawstring opening is located between the first air vent and the second air vent.

6. The airbag according to claim 2, characterized in that: The first air relief port and the second air relief port are both located between the fixed position of the first baffle and the fixed position of the second baffle; Alternatively, the fixed position of the first baffle and / or the fixed position of the second baffle is located between the first air relief port and the second air relief port.

7. The airbag according to claim 4, characterized in that: The first draw strap, the second draw strap and / or the third draw strap are provided with a blocking knot, and the blocking knot is located in the inner cavity of the airbag body; when the first baffle and / or the second baffle are blown open under the impact of air pressure in the inner cavity of the airbag body, the blocking knot moves to the first draw strap opening and / or the second draw strap opening and is stuck, so that the first baffle and / or the second baffle cannot be completely blown open and thus play a partial covering role.

8. The airbag according to claim 4, characterized in that: The belt reactor is provided with a rotatable winding mechanism, and the first belt, the second belt and / or the third belt are wound on the winding mechanism; when the belt reactor is in a tensioned state, the winding mechanism is locked and cannot rotate; when the belt reactor is in a released state, the winding mechanism is unlocked and can rotate.

9. The airbag according to claim 4, characterized in that: The belt reactor is provided with a shearing structure, and the first belt, the second belt and / or the third belt are fixedly connected to the belt reactor through the shearing structure; when the belt reactor is in a tensioned state, the shearing structure does not perform a shearing action; when the belt reactor is in a released state, the shearing structure performs a shearing action to loosen the first belt, the second belt and / or the third belt.

10. An automobile, characterized in that: Comprising the airbag as described in any one of claims 1-9.

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