Safety air bag and automobile

Abstract

The utility model provides an air bag restraint system and an automobile. The air bag restraint system comprises an air bag body and a drawstring reactor. The airbag wall of the airbag body is provided with an air outlet; the air bag is further provided with an air release piece covering the air release opening, the first side of the air release piece is fixed to the air bag body, the second side of the air release piece is covered with a blocking piece and fixed to the air bag body, and the blocking piece is provided with a channel for the second side of the air release piece to penetrate through and penetrates through the channel to be connected to the drawstring reactor through a drawstring. The blocking piece presses the air release piece to be attached to the air bag body to cover the air release opening, and the blocking piece is exposed out of the air release opening; when the drawstring reactor is in a tensioning state, the drawstring reactor tensions the air release sheet through the drawstring, so that the air release sheet covers the air release port; the drawstring reactor is in a release state, the drawstring reactor loosens the drawstring, the second side of the air release piece is blown open under the air pressure impact of the inner cavity of the air bag body, the air release opening is released, and the safety air bag can be prevented from hurting passengers with small weight or incorrect sitting postures when being unfolded while ensuring that the structure of the safety air bag is simple.

Description

Technical Field

[0001] The present application relates to the field of automobile safety technology, in particular to a safety airbag, and also to an automobile. Background Art

[0002] As people's living standards continue to improve, cars have become one of the indispensable means of transportation for people to travel, and people's requirements for car safety are getting higher and higher. Among them, airbags are one of the important components of the car safety system. When a car has an accident, the gas generator in the airbag will produce gas, and the generated gas will rush to and fill the airbag, so that the airbag will expand and deploy, which can protect the lives of passengers and avoid injuries to passengers.

[0003] At present, when a car is involved in an accident, the airbag will inflate rapidly. The airbag body has a strong impact 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.

[0004] Therefore, there is an urgent need for a safety airbag to prevent passengers with less weight or improper sitting posture from being injured when the airbag is first deployed. Utility Model Content

[0005] The present application provides a safety airbag to solve the technical problem of how to prevent the safety airbag from causing harm to passengers with light weight or improper sitting posture when an automobile accident occurs. The present application also provides an automobile using the safety airbag.

[0006] The present application provides a safety airbag, the safety airbag comprising: an airbag body and a drawstring reactor;

[0007] An air vent is provided on the airbag wall of the airbag body;

[0008] The airbag body is provided with a deflation sheet located at the deflation port and used to cover the deflation port, a first side of the deflation sheet is fixed to the airbag body, a baffle sheet is covered on the deflation sheet at the second side of the deflation sheet, the baffle sheet is fixed to the airbag body, and a channel is provided on the baffle sheet for the second side of the deflation sheet to pass through, the second side of the deflation sheet passes through the channel and is connected to the drawstring reactor through a drawstring, the baffle sheet is used to press the deflation sheet so that the deflation sheet fits the airbag body to cover the deflation port, and the baffle sheet exposes the deflation port;

[0009] When the drawstring reactor is in a tensioned state, the drawstring reactor tightens the air release sheet through the drawstring, so that the air release sheet covers the air release port; when the drawstring reactor is in a released state, the drawstring reactor loosens the drawstring, so that the second side of the air release sheet covering the air release port is blown open under the impact of the air pressure in the inner cavity of the airbag body, thereby releasing the cover on the air release port.

[0010] Optionally, the blocking piece is an elongated blocking piece, both sides of which are fixed to the airbag body, and the second side of the deflation piece extends from below the elongated blocking piece to be connected to the drawstring.

[0011] Optionally, the baffle is a U-shaped baffle, and both side edges of the U-shape of the U-shaped baffle are fixed to the airbag body, and the second side of the deflation sheet is inserted into the U-shaped bottom of the U-shaped baffle that is not fixed to the airbag body to be connected to the drawstring, and both side edges of the U-shape of the U-shaped baffle are used to cover the side edges of the deflation sheet that are not fixed to the airbag body.

[0012] Optionally, the baffle is an annular baffle, and the edges of the rest of the annular baffle except the opening are fixed on the airbag body, and the opening of the annular baffle is a channel for the drawstring and the deflation sheet to move and pull.

[0013] Optionally, the drawstring includes a first drawstring and a second drawstring, wherein the first end of the first drawstring and the first end of the second drawstring are respectively connected to the two ends of the second side of the air release sheet, and the second end of the first drawstring and the second end of the second drawstring are both connected to the drawstring reactor.

[0014] Optionally, the draw belt further includes a third draw belt, the first end of the third draw belt is respectively connected to the second end of the first draw belt and the second end of the second draw belt, and the second end of the third draw belt is connected to the draw belt reactor.

[0015] Optionally, the air release sheet is in a shape with a second side width gradually narrowing.

[0016] Optionally, a retractable winding structure is provided on the belt reactor, and the belt is wound around the winding structure; when the belt reactor is in a tensioned state, the winding structure is locked and cannot be retracted, and when the belt reactor is in a released state, the winding structure is unlocked and can be retracted.

[0017] Optionally, a shearing structure is provided on the pull-belt reactor, and the pull-belt is fixedly connected to the pull-belt reactor through the shearing structure; when the pull-belt reactor is in a tensioned state, the shearing structure does not perform a shearing action; when the pull-belt reactor is in a released state, the shearing structure performs a shearing action and cuts the pull-belt to loosen the pull-belt.

[0018] The present application also provides a car, comprising any one of the above-mentioned airbags.

[0019] Compared with the prior art, this application has the following advantages:

[0020] The present application provides a safety airbag, the safety airbag comprising: an airbag body and a drawstring reactor; an airbag wall of the airbag body is provided with an air leakage port; the airbag body is provided with an air leakage sheet located at the air leakage port and used to cover the air leakage port, the first side of the air leakage sheet is fixed to the airbag body, the air leakage sheet is covered with a baffle at the second side of the air leakage sheet, the baffle is fixed to the airbag body, and the baffle is provided with a channel for the second side of the air leakage sheet to pass through, the second side of the air leakage sheet passes through the channel and is connected to the drawstring On the drawstring reactor, the baffle is used to press the air release sheet so that the air release sheet fits against the airbag body and covers the air release port, and the baffle exposes the air release port; when the drawstring reactor is in a tensioned state, the drawstring reactor tightens the air release sheet through the drawstring so that the air release sheet covers the air release port; when the drawstring reactor is in a released state, the drawstring reactor loosens the drawstring so that the second side of the air release sheet covering the air release port is blown open under the impact of air pressure in the inner cavity of the airbag body, thereby releasing the cover on the air release port.

[0021] The airbag provided by the present application, when the airbag is inflated and deployed when an automobile accident occurs, when the drawstring reactor is in a tensioned state, the drawstring reactor tightens the deflation sheet through the drawstring so that the deflation sheet covers the deflation port, and at the same time, the deflation sheet covers the deflation port through the baffle sheet covered on the second side of the deflation sheet, thereby preventing the gas in the airbag body from leaking from the deflation port. When the airbag is inflated, the drawstring reactor is in a released state by controlling the action of the drawstring reactor. At this time, the drawstring reactor loosens the drawstring so that the second side of the deflation sheet covering the deflation port is blown open, thereby releasing the coverage of the deflation port, and the gas is released from the deflation port, which can gradually reduce the pressure in the airbag body cavity, thereby preventing the airbag from causing harm to passengers with a small weight or an incorrect sitting posture when the airbag is deployed. At the same time, the present application tightens or loosens the drawstring so that the deflation sheet covers the deflation port or releases the coverage of the deflation sheet on the deflation port, which has the advantages of simple structure, easy installation, low price, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] 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.

[0024] Figure 3 It is a schematic diagram of the state of a belt reactor and a belt when a baffle in a safety airbag provided in an embodiment of the present application is a long strip-shaped baffle and the belt reactor is in a tensioned state.

[0025] Figure 4 It is a schematic diagram of the state of a belt reactor and a belt when a baffle in a safety airbag provided in an embodiment of the present application is a long strip-shaped baffle and the belt reactor is in a released state.

[0026] Figure 5 It is a schematic diagram of the state of a drawstring reactor and a drawstring when a baffle in a safety airbag provided in an embodiment of the present application is a U-shaped baffle and the drawstring reactor is in a tensioned state.

[0027] Figure 6 It is a schematic diagram of the state of a drawstring reactor and a drawstring when a baffle in a safety airbag provided in an embodiment of the present application is a U-shaped baffle and the drawstring reactor is in a released state.

[0028] Figure 7 It is a schematic diagram of the state of a drawstring reactor and a drawstring when the baffle in a safety airbag provided in an embodiment of the present application is an annular baffle and the drawstring reactor is in a tensioned state.

[0029] Figure 8 It is a schematic diagram of the state of a belt reactor and a belt when a baffle in a safety airbag provided in an embodiment of the present application is an annular baffle and the belt reactor is in a released state.

[0030] Reference numerals:

[0031] 10: airbag body; 101: air release port; 102: air release sheet;

[0032] 103: baffle; 1031: long strip baffle; 1032: U-shaped baffle; 1033: ring-shaped baffle;

[0033] 20: belt reactor; 201: winding mechanism;

[0034] 30: drawstring; 301: first drawstring; 302: second drawstring; 303: third drawstring;

[0035] 40: Gas generator. DETAILED DESCRIPTION

[0036] 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.

[0037] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0038] 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.

[0039] In the related art, when a car accident occurs, a gas generator inflates the airbag and then deploys it to protect the passengers. However, when the air pressure in the airbag is too high, if the passenger is light or has an incorrect sitting posture, the deployed airbag body can easily hit the passenger and cause injury. The airbag wall can easily press tightly against the passenger's mouth and nose, causing secondary injury to the passenger.

[0040] Based on this, the present application provides a safety airbag, which includes: an airbag body and a drawstring reactor; an airbag wall of the airbag body is provided with an air leakage port; the airbag body is provided with an air leakage sheet located at the air leakage port and used to cover the air leakage port, the first side of the air leakage sheet is fixed to the airbag body, the air leakage sheet is covered with a baffle at the second side of the air leakage sheet, the baffle is fixed to the airbag body, and the baffle is provided with a channel for the second side of the air leakage sheet to pass through, and the second side of the air leakage sheet passes through the channel and passes through the drawstring The baffle is connected to the drawstring reactor and is used for pressing the air release sheet so that the air release sheet fits with the airbag body and covers the air release port, and the baffle exposes the air release port; when the drawstring reactor is in a tensioned state, the drawstring reactor tightens the air release sheet through the drawstring so that the air release sheet covers the air release port; when the drawstring reactor is in a released state, the drawstring reactor loosens the drawstring so that the second side of the air release sheet covering the air release port is blown open under the impact of the air pressure in the inner cavity of the airbag body, thereby releasing the cover on the air release port.

[0041] It can be understood that, when the airbag provided by the present application is inflated and deployed when an automobile accident occurs, when the drawstring reactor is in a tensioned state, the drawstring reactor tightens the deflation sheet through the drawstring, so that the deflation sheet covers the deflation port, and prevents the gas in the airbag body from leaking from the deflation port. When the airbag is fully 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 placed in a released state by controlling the action of the drawstring reactor. At this time, the drawstring reactor loosens the drawstring, so that the deflation sheet covering the deflation port is blown away, and then the deflation port is released, so that the gas is released from the deflation port, and the pressure in the airbag body cavity is gradually reduced, and the impact on the passenger when the airbag body is deployed is alleviated, and the airbag is prevented from causing harm to passengers with light weight or sitting in an incorrect posture when the airbag is deployed.

[0042] Next, the airbag provided by the present application will be described in detail with reference to the accompanying drawings.

[0043] The present application provides a safety airbag, which includes an airbag body 10 and a belt reactor 20 .

[0044] Specifically, Figure 1 and Figure 2 As shown, the airbag body 10 is a bag-shaped structure surrounded by airbag walls. The airbag walls are generally made of nylon or polyester fiber fabrics, etc., which have high strength and durability and can withstand the impact force generated by a car 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, so as to protect passengers and prevent them from being injured when the car has an accident.

[0045] In addition, the airbag body 10 is provided with an air inlet, which is responsible for inputting the gas generated by the gas generator 40 from the air inlet into the inner cavity of the airbag body 10. The gas generator 40 can also be directly installed in the inner cavity of the airbag body 10. When the gas generator 40 generates and outputs gas, the gas enters the inner cavity of the airbag body 10 for inflation.

[0046] Among them, Figure 1-8 As shown, the airbag wall of the airbag body 10 is provided with an air vent 101. It can be understood that the airbag wall of the airbag body 10 is provided with an air vent 101. The air vent 101 is used to release the gas in the inner cavity of the airbag body 10 through the air vent 101 when an automobile accident occurs, so as to avoid the injury to passengers with small weight or improper sitting posture caused by excessive air pressure in the airbag body 10.

[0047] In the embodiment of the present application, the air vent 101 may be circular or elliptical. Of course, it is not excluded that the air vent 101 may have other shapes. The shape of the air vent may be set according to specific working conditions.

[0048] It should also be noted that the number of the vents 101 provided on the airbag wall of the airbag body 10 can be set according to the actual working conditions. In the embodiment of the present application, there is no specific restriction on the number of the vents 101. In actual work, no matter how many vents 101 are provided on the airbag body 10, it should be noted that the location of the vents 101 must be reasonable; specifically, the vents 101 should be avoided from being provided at a location where the passenger will press when the airbag is working, so as to avoid the vents 101 themselves being blocked by the passenger's body.

[0049] The airbag body 10 is provided with an air leakage sheet 102 located at the air leakage port 101 and used to cover the air leakage port 101 , and a first side of the air leakage sheet 102 is fixed on the airbag body.

[0050] Specifically, Figure 3 , Figure 5 and Figure 7 As shown, the air discharge sheet 102 is arranged on the airbag body 10, and the air discharge sheet 102 is used to cover the air discharge port 101. According to the air discharge port 101 arranged on the airbag wall, the air discharge sheet 102 is arranged at the air discharge port 101, and the air discharge sheet 102 can be arranged on the outer surface of the airbag body 10 or on the inside of the airbag body 10. Whether the air discharge sheet 102 is arranged on the outer surface or the inside of the airbag body 10 can be determined according to specific circumstances, that is, the first side of the air discharge sheet 102 is fixed on the airbag body 10, that is, the first side of the air discharge sheet 102 is sewn on the airbag body 10. The second side of the air release sheet 102 is connected to the belt reactor 20 through the drawstring 30, that is, the second side of the air release sheet 102 is connected to one end of the drawstring 30, and the other end of the drawstring 30 is fixed to the belt reactor 20. It can be understood that the air release sheet 102 is connected to the belt reactor 20 through the drawstring 30, that is, the drawstring 30 and the air release sheet 102 can be regarded as one body, and the air release sheet 102 is driven to move by the drawstring 30.

[0051] The venting sheet 102 is in a shape with a second side that is gradually narrowed. It can be understood that the first side of the venting sheet 102 is fixed to the airbag body, the second side is connected to the drawstring 30, and the width of the venting sheet 102 gradually narrows from the first side to the second side, so that on the one hand, it is easier to insert the venting sheet 102 under the baffle 103, and on the other hand, when it is necessary to release the venting sheet 102 from covering the venting port 101, it is easier to blow the venting sheet 102 away.

[0052] In the embodiment of the present application, the structure of the venting sheet 102 is similar to a trapezoid, the upper base of the trapezoid is the second side of the venting sheet 102, and the lower base of the trapezoid is the first side of the venting sheet 102. However, it does not exclude that the venting sheet 102 has other structures, such as a triangle, etc. The structure of the venting sheet 102 can be set according to specific working conditions, and no further explanation will be given here.

[0053] Among them, the baffle 103 is covered on the second side of the venting sheet 102, the baffle 103 is fixed on the airbag body 10, and the baffle 103 is provided with a channel for the second side of the venting sheet to pass through, the second side of the venting sheet passes through the channel and is connected to the drawstring reactor 20 through the drawstring 30, the baffle 103 is used to press the venting sheet 102 so that the venting sheet 102 fits with the airbag body 10 and covers the venting port 101, and the baffle 103 exposes the venting port 101.

[0054] Specifically, the second side of the deflation sheet is covered with a baffle 103, the purpose of which is to press the deflation sheet 102 onto the airbag body 10, so that the deflation sheet 102 can better fit the airbag body 10, and the deflation port 101 can be covered by the deflation sheet 102. Figure 3-8 It can be seen that only the first side of the deflation sheet 102 is sewn on the airbag body 10, and the second side thereof is connected to the drawstring reactor 20 via the drawstring 30. If the airbag body 10 is already inflated, the deflation sheet 102 cannot be fixed on the deflation port 101 by simply tightening the drawstring 30, because the second side of the deflation sheet is not fixed and it will swing left and right, thereby causing gas to leak from the deflation port 101.

[0055] Therefore, it is necessary to cover the second side of the deflation sheet with a baffle 103, and the baffle 103 is fixed on the airbag body 10. There is a passage between the baffle 103 and the airbag body 10, and the second side of the deflation sheet passes through the passage and is connected to one end of the drawstring 30, and then the second end of the drawstring 30 is fixed to the drawstring reactor 20. That is, the second side of the deflation sheet passes through the passage, passes through the drawstring 30, and is connected to the drawstring reactor 20.

[0056] It should be noted that a baffle 103 is covered on the second side of the vent sheet, and the baffle 103 is used to press the vent sheet 102 so that the vent sheet 102 cannot shake left and right, and the vent sheet 102 can be better fitted to the airbag body 10, so that the vent port 101 is further covered by the vent sheet 102. In this way, when the drawstring reactor 20 is in a tensioned state, the gas in the inner cavity of the airbag body is prevented from leaking from the vent port 102.

[0057] In the embodiment of the present application, by covering the second side of the air discharge sheet 102 with the baffle sheet 103, this structure is similar to that of a drawer, that is, the air discharge sheet 102 can be pulled out, and the baffle sheet 103 located above the air discharge sheet 102 is fixed thereon.

[0058] Furthermore, the baffle 103 exposes the vent 101. When the pull-belt reactor 20 is in a released state, the covering of the vent 101 by the baffle 102 needs to be released. Therefore, in order to quickly reduce the air pressure in the inner cavity of the airbag body, the baffle 103 needs to expose the vent 101, that is, the baffle 103 does not need to cover the vent 101.

[0059] Specifically, when the gas generator 40 receives the detonation signal and the drawstring reactor 20 does not receive the response signal, the gas generator 40 reacts, and the gas rushes out of the gas generator 40 and fills the airbag body 10. Because the drawstring reactor 20 does not respond, the drawstring 30 and the air release sheet 102 are still fixed at both ends. When the airbag body 10 is gradually filled, the drawstring 30 and the air release sheet 102 are gradually tightened, so that the air release sheet 102 covers the air release port 101, so that the gas in the inner cavity of the airbag body cannot leak from the air release port 101. There are many ways to set the drawstring reactor 20, which will not be listed one by one here. In the embodiment of the present application, only a few setting methods are schematically described.

[0060] Among them, a retractable winding structure 201 is provided on the belt reactor 20, and the belt 30 is wound on the winding structure 201; when the belt reactor 20 is in a tensioned state, the winding structure 201 is locked and cannot be retracted, and when the belt reactor 20 is in a released state, the winding structure 201 is unlocked and can be retracted.

[0061] Specifically, Figure 3-Figure 8 As shown, a retractable winding structure 201 is provided on the belt reactor 20, and the winding structure 201 may be a retractable cylindrical structure, that is, the belt 30 is wound around the fixed end of the belt reactor 20 through the cylindrical winding structure 201. When the belt reactor 20 is in a tensioned state, the winding structure 201 is locked, that is, the winding structure 201 cannot be retracted. At this time, the belt reactor 20 tightens the exhaust sheet 102 with the belt 30 thereon, so that the exhaust sheet 102 covers the exhaust port 101, thereby preventing gas from leaking from the exhaust port 101. When the drawstring reactor 20 is in a released state, that is, the winding structure 201 is unlocked, the winding structure 201 can retract at this time, so that the drawstring 30 fixed on the drawstring reactor 20 falls off the drawstring reactor 20, that is, the second side of the vent sheet 102 is blown open under the air pressure in the inner cavity of the airbag body 10, thereby releasing the cover on the vent port 101, so that part of the gas in the inner cavity of the airbag body 10 is released, thereby preventing injuries to passengers with light weight or incorrect sitting posture due to excessive air pressure in the inner cavity of the airbag body.

[0062] The above-mentioned belt reactor 20 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 20 is in a tensioned state, the electromagnetic coil is energized, the electromagnetic brake pad is braked, and the winding mechanism 201 cannot retract due to the action of the brake pad; when the belt reactor 20 is in a released state, the electromagnetic brake pad is loosened due to power failure, and the winding mechanism 201 retracts because the brake pad does not work.

[0063] The strap reactor 20 has another arrangement mode, in which a shearing structure is arranged on the strap reactor 20, and the strap 30 is fixedly connected to the strap reactor 20 through the shearing structure; when the strap reactor 20 is in a tensioned state, the shearing structure does not perform a shearing action; when the strap reactor 20 is in a released state, the shearing structure performs a shearing action and cuts the strap 30, thereby loosening the strap 30.

[0064] Specifically, a shearing structure is provided on the belt reactor 20, and the belt 30 is fixed on the belt reactor 20 by the shearing structure, that is, the belt 30 is fixed to the fixed end of the belt reactor 20 by the shearing structure. When the belt reactor 20 is in a tensioned state, the shearing structure does not perform a shearing action, that is, the shearing structure does not cut the belt 30 fixed on the belt reactor 20, and the belt 30 is still fixed on the fixed end of the belt reactor 20. At this time, the belt reactor 20 tightens the vent sheet 102 through the belt 30 on it, so that the vent sheet 102 covers the vent port 101 to prevent gas from leaking from the vent port 101. When the drawstring reactor 20 is in a released state, that is, the shearing structure performs a shearing action, the shearing structure cuts off the drawstring 30 fixed on the drawstring reactor 20, so that the drawstring 30 fixed on the drawstring reactor 20 falls off from the drawstring reactor, that is, the second side of the vent sheet 102 is blown open under the air pressure in the inner cavity of the airbag body, thereby releasing the cover on the vent port 101, so that part of the gas in the inner cavity of the airbag body 10 is released, thereby avoiding damage to passengers with light weight or incorrect sitting posture when the airbag is deployed.

[0065] The above-mentioned shearing structure can be implemented in different ways. For example, the drawstring 30 passes through a shearing opening, one end of which is arranged on a telescopic rod that can be extended. When the telescopic rod is retracted under the action of electromagnetic force, the blade edge relative to the shearing opening shrinks and overlaps, and the drawstring passing through this position is cut off, thereby executing the shearing action.

[0066] Next, the structure of the blocking piece 103 will be described in detail.

[0067] The baffle is a long strip baffle 1031 , both sides of which are fixed to the airbag body 10 , and the second side of the deflation sheet 102 extends from below the long strip baffle 1031 to be connected to the drawstring 30 .

[0068] Specifically, Figure 3-4 As shown, the long strip baffle 1031 is fixed to the airbag body 10 at the second side of the deflation sheet 102, that is, the left and right ends of the long strip baffle 1031 are sewn to the airbag body 10, and the long strip baffle 1031 is used to press the second side of the deflation sheet 102. The deflation sheet 102 can be tightly covered on the deflation port 101 by the long strip baffle 1031 to prevent the gas in the inner cavity of the airbag body from leaking from the deflation port 101.

[0069] In the embodiment of the present application, in order to better cover the air release sheet 102 on the air release port 101, the second side of the air release sheet 102 can be extended from the channel between the elongated baffle sheet 1031 and the airbag body and connected to the drawstring 30. It can be understood that the left and right ends of the elongated baffle sheet 1031 are fixed on the airbag body 10, so that the elongated baffle sheet 1031 and the airbag body form a channel, and the channel is a channel for the drawstring 30 and the air release sheet 102 to be moved and pulled.

[0070] Among them, the baffle is a U-shaped baffle 1032, and the two side edges of the U-shape of the U-shaped baffle are fixed on the airbag body 10. The second side of the deflation sheet 102 is inserted into the U-shaped bottom of the U-shaped baffle 1032 that is not fixed to the airbag body 10 to be connected to the drawstring 30. The two side edges of the U-shape of the U-shaped baffle are used to cover the side edges of the deflation sheet that are not fixed to the airbag body.

[0071] Specifically, Figure 5-6 As shown, the baffle can also be a U-shaped baffle 1032, the opening direction of the U-shaped baffle 1032 is toward the first side of the deflation sheet 102, and the second side of the deflation sheet 102 can be extended through the opening of the U-shaped baffle 1032 to the bottom of the U-shaped baffle 1032, and connected to the drawstring 30 from the U-shaped bottom of the U-shaped baffle. The opening of the U-shaped baffle is opposite to the U-shaped bottom of the U-shaped baffle, and the U-shaped bottom of the U-shaped baffle is not fixed to the airbag body, only the left and right sides of the U-shaped of the U-shaped baffle are fixed to the airbag body, so that the U-shaped bottom of the U-shaped baffle and the airbag body form a channel, and the channel is a channel for the drawstring 30 and the deflation sheet 102 to move and pull.

[0072] In the embodiment of the present application, when the drawstring reactor 20 is in a tensioned state, the left and right sides of the U-shaped U-shaped baffle can cover the left and right sides of the venting sheet 102 that are not fixed to the airbag body on the venting port 101, so as to strengthen the coverage of the venting sheet 102 on the venting port 101, and prevent the gas in the inner cavity of the airbag body from leaking from the venting port 101. Moreover, when the drawstring reactor 20 is in a released state, in order to better release the coverage of the venting sheet 102 on the venting port 101, it is not necessary to extend the second side of the venting sheet 102 from the U-shaped bottom of the U-shaped baffle, and the drawstring 30 can be extended from the U-shaped bottom of the U-shaped baffle to the airbag body and connected with the second side of the venting sheet.

[0073] It should also be noted that the middle portion of the U-shaped baffle 1032 is not sealed, and the air vent 101 can be exposed, so that when the air vent 101 is covered by the air vent 102, the gas in the airbag body can be better released.

[0074] The baffle is an annular baffle, and the edges of the rest of the annular baffle except the opening are fixed on the airbag body, and the opening of the annular baffle is a channel for the drawstring and the deflation sheet to move and release.

[0075] Specifically, Figure 7-8 As shown, the baffle can also be an annular baffle 1033, and the opening of the annular baffle 1033 faces the connection between the drawstring 30 and the deflation sheet 102, that is, the opening of the annular baffle 1033 is reserved and not sewn on the airbag body, and the opening is for extending the drawstring 30 from the opening into the airbag body and connecting with the second side of the deflation sheet 102.

[0076] Moreover, except for the opening of the annular baffle 1033, the edges of the remaining parts are fixed on the airbag body 10, and the opening of the annular baffle 1033 is a channel for the pull belt 30 and the air release sheet 102 to move and pull. In the embodiment of the present application, except for the opening, the edges of the remaining parts of the annular baffle 1033 can cover the edge of the air release sheet that is not fixed to the airbag body on the air release port 101, so that when the pull belt reactor 20 is in a tensioned state, the gas in the inner cavity of the airbag body is prevented from leaking from the air release port 101. Moreover, the central part of the annular baffle 1033 can expose the air release port 101, that is, the annular baffle 1033 does not cover the air release port 101.

[0077] The above are three different structures of the baffle 103. The structure of the baffle 103 can be selected according to the specific working conditions, but it does not mean that the structure of the baffle 103 is limited to the above three methods. The structures of the baffles are not exhaustively listed in the embodiments of the present application. It can be understood that as long as the baffle can cover or release the air vent, the structures of the baffles involved are all within the protection scope of the embodiments of the present application.

[0078] The drawstring includes a first drawstring and a second drawstring, wherein the first end of the first drawstring and the first end of the second drawstring are respectively connected to the two ends of the second side of the air release sheet, and the second end of the first drawstring and the second end of the second drawstring are both connected to the drawstring reactor.

[0079] Specifically, Figure 8As shown, the drawstring includes a first drawstring 301 and a second drawstring 302, and the first end of the first drawstring and the first end of the second drawstring are respectively connected to the left and right ends of the second side of the degassing sheet, and in order to better cover the degassing sheet 102 on the degassing port 101, the length, width, etc. of the first drawstring 301 and the second drawstring 302 can be equal, and the connection positions of the first drawstring 301 and the second drawstring 302 with the second side of the degassing sheet are symmetrical about the center line of the degassing sheet. Of course, it is not excluded that the length, width, etc. of the first drawstring 301 and the second drawstring 302 can be unequal. Subsequently, the second end of the first drawstring and the second end of the second drawstring can be connected to the fixed end of the drawstring reactor 20.

[0080] Further, if Figure 8 As shown, the draw belt further includes a third draw belt 303, the first end of the third draw belt is respectively connected to the second end of the first draw belt and the second end of the second draw belt, and the second end of the third draw belt is connected to the draw belt reactor.

[0081] Specifically, the second end of the first pull strap, the second end of the second pull strap, and the first end of the third pull strap can be connected, or the second end of the first pull strap and the second end of the second pull strap can be first connected together and then connected to the first end of the third pull strap, and the second end of the third pull strap can be fixed to the fixed end of the pull strap reactor.

[0082] Among them, the drawstring reactor 20 tightens the vent sheet 102 through the drawstring 30, so that the vent sheet 102 covers the vent port 101; when the drawstring reactor 20 is in a released state, the drawstring reactor 20 loosens the drawstring 30, so that the second side of the vent sheet 102 covering the vent port 101 is blown open under the impact of the air pressure in the inner cavity of the airbag body, thereby releasing the cover on the vent port 101.

[0083] Specifically, the tensioned state and the released state of the drawstring reactor 20 can be switched by electronic control, and the drawstring reactor 20 can be used in conjunction with the 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 20 is controlled to be in the released state, and when the detection device detects that the passenger is normal in weight or has a normal sitting posture, the drawstring reactor 20 is controlled to be in the tensioned state.

[0084] 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.

[0085] The drawstring reactor 20 is in a release state, that is, the air pressure in the airbag body cavity is too high at this time, which may cause harm to passengers with light weight or sitting in an incorrect posture when the airbag is deployed, and may hinder the normal breathing of the passengers, so it is necessary to release part of the gas in the airbag body cavity. That is, the drawstring reactor 20 responds, the drawstring 30 will be loosened from the drawstring reactor 20, and the tension applied by the drawstring 30 on the air vent 101 is also released synchronously, so that the air vent 101 is impacted by the air pressure in the airbag body cavity, so that the second side of the air vent sheet 102 covering the air vent 101 is blown open to release the cover of the air vent 101, thereby unloading the pressure in the airbag body cavity.

[0086] When the detection device detects that the passenger's weight or sitting posture is normal, the drawstring reactor 20 is controlled to be in a tensioned state. That is, at this time, the drawstring reactor 20 tightens the vent sheet 102 through the drawstring 30 so that the vent sheet 102 covers the vent port 101. At the same time, the baffle 103 covering the vent sheet 102 can strengthen the coverage of the vent port 101 by the vent sheet 102 to prevent the gas in the inner cavity of the airbag body 10 from escaping from the vent port 101.

[0087] The present application provides a safety airbag, the safety airbag comprising: an airbag body 10 and a drawstring reactor 20; an airbag wall of the airbag body 10 is provided with an air leakage port 101; the airbag body is provided with an air leakage sheet 102 located at the air leakage port 101 and used to cover the air leakage port, the first side of the air leakage sheet 102 is fixed to the airbag body 10, the air leakage sheet is covered with a baffle 103 at the second side of the air leakage sheet, the baffle 103 is fixed to the airbag body, and the baffle 103 is provided with a channel for the second side of the air leakage sheet to pass through, the second side of the air leakage sheet passes through the channel and is connected to the drawstring reactor 20 through the drawstring 30 0, the baffle 103 is used to press the air release sheet 102 so that the air release sheet 102 fits with the airbag body 10 and covers the air release port 101, and the baffle 102 exposes the air release port 101; when the drawstring reactor 20 is in a tensioned state, the drawstring reactor 20 tightens the air release sheet 102 through the drawstring 30 so that the air release sheet 102 covers the air release port 101; when the drawstring reactor 20 is in a released state, the drawstring reactor 20 loosens the drawstring 30 so that the second side of the air release sheet covering the air release port 101 is blown open under the impact of the air pressure in the inner cavity of the airbag body, thereby releasing the cover on the air release port 101.

[0088] The present application tightens the deflation sheet 102 through the drawstring 30 so that the deflation sheet 102 covers the deflation port 101, and at the same time, the baffle 103 covering the second side of the deflation sheet 102 allows the deflation sheet to better fit the surface of the airbag body, thereby strengthening the coverage of the deflation sheet 102 on the deflation port 101 to prevent gas leakage in the inner cavity of the airbag body. The deflation port 101 is open when the drawstring reactor is in a released state, and the drawstring reactor 20 releases the drawstring 30 so that the deflation sheet 102 covering the deflation port 101 is blown open, so that part of the gas in the inner cavity of the airbag body is released, thereby preventing excessive air pressure in the inner cavity of the airbag body from causing harm to passengers with light weight or incorrect sitting posture when the airbag is deployed, and possibly hindering the normal breathing of the passengers, causing secondary harm to the passengers.

[0089] The present application also provides a car, which includes the above-mentioned safety airbag, as follows.

[0090] The embodiment of the present application also provides a car, the car includes the above-mentioned safety airbag, the safety airbag includes: an airbag body and a pull belt reactor;

[0091] An air vent is provided on the airbag wall of the airbag body;

[0092] The airbag body is provided with a deflation sheet located at the deflation port and used to cover the deflation port, a first side of the deflation sheet is fixed to the airbag body, a baffle sheet is covered on the deflation sheet at the second side of the deflation sheet, the baffle sheet is fixed to the airbag body, and a channel is provided on the baffle sheet for the second side of the deflation sheet to pass through, the second side of the deflation sheet passes through the channel and is connected to the drawstring reactor through a drawstring, the baffle sheet is used to press the deflation sheet so that the deflation sheet fits the airbag body to cover the deflation port, and the baffle sheet exposes the deflation port;

[0093] When the drawstring reactor is in a tensioned state, the drawstring reactor tightens the air release sheet through the drawstring, so that the air release sheet covers the air release port; when the drawstring reactor is in a released state, the drawstring reactor loosens the drawstring, so that the second side of the air release sheet covering the air release port is blown open under the impact of the air pressure in the inner cavity of the airbag body, thereby releasing the cover on the air release port.

[0094] The specific implementation of the airbag in this embodiment is similar to that of the airbag in the above embodiment. Please refer to the relevant contents of the above embodiment for details, and no unnecessary details will be given here.

[0095] 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.

[0096] 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.

[0097] 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; An air vent is provided on the airbag wall of the airbag body; The airbag body is provided with a deflation sheet located at the deflation port and used to cover the deflation port, a first side of the deflation sheet is fixed to the airbag body, a baffle sheet is covered on the deflation sheet at the second side of the deflation sheet, the baffle sheet is fixed to the airbag body, and a channel is provided on the baffle sheet for the second side of the deflation sheet to pass through, the second side of the deflation sheet passes through the channel and is connected to the drawstring reactor through a drawstring, the baffle sheet is used to press the deflation sheet so that the deflation sheet fits the airbag body to cover the deflation port, and the baffle sheet exposes the deflation port; When the drawstring reactor is in a tensioned state, the drawstring reactor tightens the air release sheet through the drawstring, so that the air release sheet covers the air release port; when the drawstring reactor is in a released state, the drawstring reactor loosens the drawstring, so that the second side of the air release sheet covering the air release port is blown open under the impact of the air pressure in the inner cavity of the airbag body, thereby releasing the cover on the air release port.

2. The airbag according to claim 1, characterized in that: The blocking piece is a long strip blocking piece, and two sides of the long strip blocking piece are fixed on the airbag body. The second side of the deflation piece extends from below the long strip blocking piece to be connected with the drawstring.

3. The airbag according to claim 1, characterized in that: The baffle is a U-shaped baffle, and both side edges of the U-shape of the U-shaped baffle are fixed to the airbag body. The second side of the deflation sheet is inserted into the U-shaped bottom of the U-shaped baffle that is not fixed to the airbag body to be connected to the drawstring, and both side edges of the U-shaped baffle are used to cover the side edges of the deflation sheet that are not fixed to the airbag body.

4. The airbag according to claim 1, characterized in that: The baffle is an annular baffle. Except for the opening, the edges of the remaining parts of the annular baffle are fixed on the airbag body. The opening of the annular baffle is a channel for the drawstring and the deflation sheet to move and release.

5. The airbag according to claim 1, characterized in that: The drawstring includes a first drawstring and a second drawstring, wherein the first end of the first drawstring and the first end of the second drawstring are respectively connected to the two ends of the second side of the air release sheet, and the second end of the first drawstring and the second end of the second drawstring are both connected to the drawstring reactor.

6. The airbag according to claim 5, characterized in that: The draw belt further includes a third draw belt, a first end of the third draw belt is respectively connected to the second end of the first draw belt and the second end of the second draw belt, and a second end of the third draw belt is connected to the draw belt reactor.

7. The airbag according to claim 1, characterized in that: The air release sheet is in a shape where the width of the second side gradually narrows.

8. The airbag according to claim 1, characterized in that: The belt reactor is provided with a retractable winding structure, on which the belt is wound; when the belt reactor is in a tensioned state, the winding structure is locked and cannot be retracted; when the belt reactor is in a released state, the winding structure is unlocked and can be retracted.

9. The airbag according to claim 1, characterized in that: The drawstring reactor is provided with a shearing structure, through which the drawstring is fixedly connected to the drawstring reactor; when the drawstring reactor is in a tensioned state, the shearing structure does not perform a shearing action; when the drawstring reactor is in a released state, the shearing structure performs a shearing action and cuts the drawstring to loosen it.

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

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