Airbag and vehicle

Abstract

Provided in the present application are an airbag and a vehicle. The airbag comprises an airbag body and a tether reactor, wherein a vent port is provided in the airbag wall of the airbag body; a venting sheet covering the vent port is further provided; a first side of the venting sheet is fixed on the airbag body; a blocking sheet covers a second side of the venting sheet, and is fixed on the airbag body, and the blocking sheet is provided with a channel, through which the second side of the venting sheet passes; the second side of the venting sheet passes through the channel, and is connected to the tether reactor by means of tethers; the blocking sheet presses the venting sheet to cause same to fit to the airbag body and cover the vent port, and the blocking sheet uncovers the vent port; when the tether reactor is in a tensioned state, the tether reactor tensions the venting sheet by means of the tethers, such that the venting sheet covers the vent port; and when the tether reactor is in a released state, the tether reactor releases the tethers, and the second side of the venting sheet is blown open under the impact of the air pressure in an inner cavity of the airbag body, thereby uncovering the vent port. It is ensured that the airbag has a simple structure and that passengers with lower body weights or in improper seating postures can also be prevented from being injured when the airbag is deployed.

Description

An airbag and a car

[0001] This application claims priority to Chinese Patent Application No. 2024107892624, filed on June 18, 2024, entitled "An Airbag and a Car", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of automotive safety technology, specifically to an airbag, and also to an automobile. Background Technology

[0003] As people's living standards continue to improve, cars have become an indispensable means of transportation, and people's requirements for car safety are also increasing. Among them, airbags are one of the important components of the car safety system. When a car accident occurs, the gas generator in the airbag produces gas, which rushes towards and fills the airbag, causing it to inflate and deploy, protecting the lives of passengers and preventing injuries.

[0004] Currently, when a car accident occurs, the airbag will inflate rapidly. The airbag itself has a strong impact force when it deploys. If the passenger is lightweight or has an incorrect sitting posture, the deployed airbag can easily hit the passenger and cause injury.

[0005] Therefore, there is an urgent need for a safety airbag that can prevent injury to passengers who are lighter or have poor posture when it first deploys.

[0006] Summary of the Invention

[0007] This application provides an airbag to address the technical problem of how to prevent airbags from causing injury to passengers with lower body weight or improper seating posture during a car accident. This application also provides a car using the aforementioned airbag.

[0008] This application provides a safety airbag, which includes: an airbag body and a strap reactor;

[0009] The airbag body has an air vent on its airbag wall;

[0010] The airbag body is provided with an air vent plate located at the air vent and used to cover the air vent. The first side of the air vent plate is fixed to the airbag body. A baffle plate is provided on the second side of the air vent plate. The baffle plate is fixed to the airbag body and has a channel for the second side of the air vent plate to pass through. The second side of the air vent plate passes through the channel and is connected to the pull belt reactor through the pull belt. The baffle plate is used to press the air vent plate so that the air vent plate fits against the airbag body and covers the air vent. The baffle plate is exposed at the air vent.

[0011] When the pull-belt reactor is in the tensioned state, the pull-belt reactor tensions the vent plate with the pull belt, so that the vent plate covers the vent. When the pull-belt reactor is in the release state, the pull-belt reactor releases the pull belt, so that the second side of the vent plate covering the vent is blown open by the air pressure impact in the inner cavity of the airbag body, thereby removing the cover from the vent.

[0012] Optionally, the baffle is a long strip-shaped baffle, with both sides of the long strip-shaped baffle fixed to the airbag body, and the second side of the deflation plate extending from below the long strip-shaped baffle to connect with the pull strap.

[0013] Optionally, the baffle is a U-shaped baffle, with the two U-shaped sides of the baffle fixed to the airbag body. The second side of the deflation plate is inserted into the U-shaped bottom of the baffle that is not fixed to the airbag body to connect with the pull strap. The two U-shaped sides of the baffle are used to cover the sides of the deflation plate that are not fixed to the airbag body.

[0014] Optionally, the baffle is an annular baffle, in which the edges of the annular baffle, except for the opening, are fixed to the airbag body, and the opening of the annular baffle is a channel for the pull strap and the deflation plate to move and be released.

[0015] Optionally, the pull belt includes a first pull belt and a second pull belt, with a first end of the first pull belt and a first end of the second pull belt respectively connected to both ends of the second side of the vent plate, and a second end of the first pull belt and a second end of the second pull belt both connected to the pull belt reactor.

[0016] Optionally, the pull belt further includes a third pull belt, the first end of which is connected to the second end of the first pull belt and the second end of the second pull belt, and the second end of the third pull belt is connected to the pull belt reactor.

[0017] Optionally, the vent plate has a shape in which the width gradually narrows on the second side.

[0018] Optionally, the pull-belt reactor is provided with a retractable winding structure, and the pull-belt is wound around the winding structure; when the pull-belt reactor is in a tensioned state, the winding structure is locked and cannot be retracted; when the pull-belt reactor is in a released state, the winding structure is unlocked and can be retracted.

[0019] Optionally, the belt-pulling reactor is provided with a shearing structure, and the belt-pulling reactor is fixed to the belt-pulling reactor through the shearing structure; when the belt-pulling reactor is in a tensioned state, the shearing structure does not perform a shearing action; when the belt-pulling reactor is in a released state, the shearing structure performs a shearing action and cuts the belt-pulling reactor, causing the belt-pulling reactor to loosen.

[0020] This application also provides a vehicle that includes the airbags described above.

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

[0022] This application provides an airbag, comprising: an airbag body and a strap reactor; a vent is provided on the airbag wall of the airbag body; a vent flap is provided on the airbag body at the vent and for covering the vent, a first side of the vent flap is fixed to the airbag body, a baffle is provided on the second side of the vent flap, the baffle is fixed to the airbag body, and the baffle has a channel for the second side of the vent flap to pass through, the second side of the vent flap passing through the channel and connected by a strap. On the pull-belt reactor, the baffle is used to press the vent plate so that the vent plate fits against the airbag body and covers the vent, with the baffle protruding from the vent. When the pull-belt reactor is in the tensioned state, the pull-belt reactor tensions the vent plate with the pull belt, so that the vent plate covers the vent. When the pull-belt reactor is in the release state, the pull-belt reactor releases the pull belt, so that the second side of the vent plate covering the vent is blown open by the air pressure impact in the inner cavity of the airbag body, thereby releasing the cover of the vent.

[0023] The airbag provided in this application, when inflated and deployed during a car accident, with the strap reactor in a tightened state, tightens the vent panel via the strap, ensuring the vent panel covers the vent opening. Simultaneously, a baffle covering the second side of the vent panel further reinforces the coverage of the vent opening, preventing gas leakage from the airbag's internal cavity. After the airbag has fully inflated, the strap reactor is released by controlling its movement. At this point, the strap reactor releases the strap, causing the second side of the vent panel covering the vent opening to be blown open, thus releasing the gas and gradually reducing the pressure within the airbag's internal cavity. This prevents injury to passengers with lower body weight or improper seating posture during airbag deployment. Furthermore, this application, by tightening or loosening the strap to cover or release the vent panel, offers advantages such as simple structure, ease of installation, and low cost. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the structure of the airbag's strap reactor in a tensioned state according to an embodiment of this application.

[0025] Figure 2 is a schematic diagram of the structure of the airbag pull-belt reactor in the release state according to an embodiment of this application.

[0026] Figure 3 is a schematic diagram of the state of the airbag and the pull belt reactor when the baffle in the airbag is a long strip baffle and the pull belt reactor is in a taut state, according to an embodiment of this application.

[0027] Figure 4 is a schematic diagram of the state of the pull belt reactor and the pull belt when the baffle in the airbag provided in the embodiment of this application is a long strip baffle and the pull belt reactor is in the released state.

[0028] Figure 5 is a schematic diagram of the state of the airbag with a U-shaped baffle and the pull belt reactor when the pull belt reactor is in a tensioned state, according to an embodiment of this application.

[0029] Figure 6 is a schematic diagram of the state of the pull belt reactor and the pull belt when the baffle in the airbag provided in the embodiment of this application is a U-shaped baffle and the pull belt reactor is in the release state.

[0030] Figure 7 is a schematic diagram of the state of the airbag and the pull belt reactor when the baffle in the airbag is annular and the pull belt reactor is in a tensioned state, according to an embodiment of this application.

[0031] Figure 8 is a schematic diagram of the state of the pull belt reactor and the pull belt when the baffle in the airbag provided in the embodiment of this application is annular and the pull belt reactor is in the release state.

[0032] Reference numerals: 10: Airbag body; 101: Vent; 102: Vent flap; 103: Baffle; 1031: Long strip baffle; 1032: U-shaped baffle; 1033: Ring baffle; 20: Belt reactor; 201: Winding mechanism; 30: Belt; 301: First belt; 302: Second belt; 303: Third belt; 40: Gas generator. Detailed Implementation

[0033] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In related technologies, when a car accident occurs, the gas generator inflates the airbag and deploys it to protect the safety of passengers. However, if the air pressure in the airbag is too high, if the passenger is small or has an incorrect sitting posture, the deployed airbag body can easily hit the passenger and cause injury. It can also cause the airbag wall to press tightly against the passenger's mouth and nose, resulting in secondary injury to the passenger.

[0037] Accordingly, this application provides an airbag comprising: an airbag body and a strap reactor; a vent is provided on the airbag wall of the airbag body; a vent flap is provided on the airbag body at the vent and for covering the vent, a first side of the vent flap is fixed to the airbag body, and a baffle is provided on the second side of the vent flap, the baffle is fixed to the airbag body, and the baffle has a channel through which the second side of the vent flap passes, the second side of the vent flap passes through the channel and through the strap. Connected to the pull-belt reactor, the baffle is used to press the vent plate so that the vent plate fits against the airbag body and covers the vent, with the baffle protruding from the vent. When the pull-belt reactor is in the tensioned state, the pull-belt reactor tensions the vent plate through the pull belt, so that the vent plate covers the vent. When the pull-belt reactor is in the release state, the pull-belt reactor releases the pull belt, so that the second side of the vent plate covering the vent is blown open under the air pressure impact of the airbag body, thereby releasing the cover of the vent.

[0038] This application describes a safety airbag that, when inflated and deployed during a car accident, uses a tensioned strap reactor to tighten the vent plate, covering the vent opening and preventing gas leakage from the airbag's internal cavity. When the airbag is fully inflated, a detection device can monitor the passenger. If the passenger is lightweight or has an improper posture, the reactor can be released by controlling its movement. This releases the strap, allowing the vent plate covering the vent to be blown open, releasing the gas and gradually reducing pressure within the airbag's internal cavity. This mitigates the impact on the passenger during airbag deployment and prevents injury to lightweight or improperly positioned passengers.

[0039] The airbag provided in this application will now be described in detail with reference to the accompanying drawings.

[0040] This application provides a safety airbag, which includes: an airbag body 10 and a strap reactor 20.

[0041] Specifically, as shown in Figures 1 and 2, the airbag body 10 is a bag-shaped structure surrounded by airbag walls. These walls are typically made of nylon or polyester fiber fabric, which possesses high strength and durability, capable of withstanding the impact forces generated during a car collision. After the inner cavity of the airbag body 10 is inflated, it expands under air pressure, forming a cushioning structure to support the human body. This protects passengers and prevents injury during a car accident.

[0042] 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 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.

[0043] As shown in Figures 1-8, the airbag body 10 has a vent 101 on its airbag wall. This means that the vent 101 is provided on the airbag wall of the airbag body 10. The vent 101 is used to release the gas inside the airbag body 10 in the event of a car accident, preventing injury to passengers with smaller builds or improper posture due to excessive air pressure in the airbag body 10.

[0044] In this embodiment, the vent 101 can be circular or elliptical, and of course, it is not excluded that the vent 101 may have other shapes. The shape of the vent can be set according to the specific working conditions.

[0045] It should also be noted that the number of vents 101 provided on the airbag wall of the airbag body 10 can be set according to actual working conditions. In this embodiment, there is no specific limitation on the number of vents 101. In actual operation, regardless of the number of vents 101 provided on the airbag body 10, it is important to ensure that the location of the vents 101 is reasonable. Specifically, the vents 101 should avoid being located in positions where they would be pressed down by passengers when the airbag is deployed, and should be prevented from being blocked by the passenger's body.

[0046] The airbag body 10 is provided with an air vent 102 located at the air vent 101 and used to cover the air vent 101, and the first side of the air vent 102 is fixed to the airbag body.

[0047] Specifically, as shown in Figures 3, 5, and 7, the vent plate 102 is disposed on the airbag body 10, and the vent plate 102 is used to cover the vent opening 101. The vent plate 102 is disposed at the vent opening 101 provided on the airbag wall. The vent plate 102 can be disposed on the outer surface of the airbag body 10 or on the inside of the airbag body 10. Whether the vent plate 102 is disposed on the outer surface or inside of the airbag body 10 can be determined according to the specific circumstances. That is, the first side of the vent plate 102 is fixed to the airbag body 10, that is, the first side of the vent plate 102 is sewn onto the airbag body 10. The second side of the vent plate 102 is connected to the pull belt reactor 20 via the pull belt 30. That is, the second side of the vent plate 102 is connected to one end of the pull belt 30, and the other end of the pull belt 30 is fixed to the pull belt reactor 20. It can be understood that the vent plate 102 is connected to the pull belt reactor 20 via the pull belt 30. In other words, the pull belt 30 and the vent plate 102 can be regarded as a whole, and the vent plate 102 is driven to move by the pull belt 30.

[0048] The vent plate 102 has a shape where its width gradually narrows on the second side. This can be understood as follows: the first side of the vent plate 102 is fixed to the airbag body, and its second side is connected to the pull strap 30. The width of the vent plate 102 gradually narrows from the first side to the second side. This makes it easier to insert the vent plate 102 under the baffle 103, and also makes it easier to blow open the vent plate 102 when it is necessary to remove its coverage of the vent opening 101.

[0049] In this embodiment, the structure of the vent plate 102 is similar to a trapezoid, with the upper base of the trapezoid being the second side of the vent plate 102 and the lower base being the first side of the vent plate 102. However, it is not excluded that the vent plate 102 may have other structures, such as a triangle. The structure of the vent plate 102 can be set according to the specific working conditions, which will not be described in detail here.

[0050] The vent plate 102 is covered by a baffle plate 103 on its second side. The baffle plate 103 is fixed to the airbag body 10 and has a channel through which the second side of the vent plate passes. The second side of the vent plate passes through the channel and is connected to the pull belt reactor 20 through the pull belt 30. The baffle plate 103 is used to press the vent plate 102 so that the vent plate 102 fits against the airbag body 10 and covers the vent port 101. The baffle plate 103 is exposed at the vent port 101.

[0051] Specifically, a baffle 103 covers the second side of the vent plate. The purpose of the baffle 103 is to press the vent plate 102 onto the airbag body 10, so that the vent plate 102 can better fit the airbag body 10 and cover the vent port 101. As shown in Figures 3-8, only the first side of the vent plate 102 is sewn onto the airbag body 10, and its second side is connected to the pull strap reactor 20 via a pull strap 30. If the airbag body 10 is already inflated, simply pulling the vent plate 102 with the pull strap 30 is not enough to fix the vent plate 102 to the vent port 101, because the second side of the vent plate is not fixed and will sway from side to side, causing gas to leak from the vent port 101.

[0052] Therefore, a baffle 103 needs to be placed on the second side of the vent plate, and the baffle 103 is fixed to the airbag body 10. A channel exists between the baffle 103 and the airbag body 10, through which the second side of the vent plate passes and is connected to one end of the pull strap 30. The second end of the pull strap 30 is then fixed to the pull strap reactor 20. In other words, the second side of the vent plate passes through the baffle 103 and is connected to the pull strap reactor 20 via the pull strap 30.

[0053] It should be noted that a baffle 103 is provided on the second side of the vent plate. The baffle 103 is used to press the vent plate 102 so that the vent plate 102 cannot shake from side to side. This allows the vent plate 102 to fit better with the airbag body 10, thereby further covering the vent port 101 through the vent plate 102. This prevents gas in the inner cavity of the airbag body from leaking from the vent port 102 when the belt reactor 20 is in a taut state.

[0054] In this embodiment of the application, by covering the second side of the vent plate 102 with the baffle 103, this structure is similar to the structure of a drawer, that is, the vent plate 102 can be pulled out, and the baffle 103 located above the vent plate 102 is fixed on it.

[0055] Furthermore, the baffle 103 exposes the vent 101. When the pull-belt reactor 20 is in the released state, the vent 102 needs to remove its cover over the vent 101. 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.

[0056] Specifically, when the gas generator 40 receives a detonation signal but the pull-belt reactor 20 does not receive a response signal, the gas generator 40 reacts, and gas rushes out from the gas generator 40 and fills the airbag body 10. Because the pull-belt reactor 20 does not respond, the pull-belt 30 and the vent plate 102 remain fixed at both ends. As the airbag body 10 gradually fills, the pull-belt 30 and the vent plate 102 are gradually tightened, causing the vent plate 102 to cover the vent port 101, preventing gas from leaking from the airbag body's internal cavity through the vent port 101. There are many ways to configure the pull-belt reactor 20, which will not be listed here. In this embodiment, only a few configuration methods are illustrated.

[0057] The pull-belt reactor 20 is provided with a retractable winding structure 201, and the pull-belt 30 is wound around the winding structure 201. When the pull-belt reactor 20 is in a tensioned state, the winding structure 201 is locked and cannot be retracted. When the pull-belt reactor 20 is in a released state, the winding structure 201 is unlocked and can be retracted.

[0058] Specifically, as shown in Figures 3-8, a retractable winding structure 201 is provided on the belt-pulling reactor 20. The winding structure 201 can be a retractable cylindrical structure, that is, the belt-pulling device 30 is wound around the fixed end of the belt-pulling reactor 20 through the cylindrical winding structure 201. When the belt-pulling reactor 20 is in a taut state, the winding structure 201 is locked, that is, the winding structure 201 cannot be retracted. At this time, the belt-pulling reactor 20 pulls the belt-pulling device 30 on it to tighten the vent plate 102, thereby causing the vent plate 102 to cover the vent port 101 and prevent gas from leaking from the vent port 101. When the pull-belt reactor 20 is in the released state, that is, the winding structure 201 is unlocked, the winding structure 201 can retract, causing the pull-belt 30 fixed on the pull-belt reactor 20 to fall off the pull-belt reactor 20. That is, the second side of the vent plate 102 is blown open under the air pressure inside the airbag body 10, thereby removing the cover on the vent 101, so that some of the gas in the airbag body 10 is released, preventing the air pressure inside the airbag body from being too high and causing injury to passengers with small weight or poor sitting posture.

[0059] The aforementioned belt-pulling reactor 20 can be implemented using various methods provided by existing technology. For example, it can be implemented using an electromagnetic brake pad. When the belt-pulling reactor 20 is in a tensioned state, the electromagnetic coil is energized, and the electromagnetic brake pad is engaged. The winding mechanism 201 cannot retract due to the action of the brake pad. When the belt-pulling reactor 20 is in a released state, the electromagnetic brake pad is de-energized and released. The winding mechanism 201 retracts because the brake pad is ineffective.

[0060] The belt-pulling reactor 20 can also be configured in another way, wherein a shearing structure is provided on the belt-pulling reactor 20, and the belt 30 is fixed to the belt-pulling reactor 20 through the shearing structure; when the belt-pulling reactor 20 is in a tensioned state, the shearing structure does not perform a shearing action; when the belt-pulling reactor 20 is in a released state, the shearing structure performs a shearing action and cuts the belt 30, causing the belt 30 to loosen.

[0061] Specifically, a shearing structure is provided on the belt-pulling reactor 20 to fix the belt-pulling reactor 20, that is, to the fixed end of the belt-pulling reactor 20. When the belt-pulling 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-pulling reactor 20 fixed to the belt-pulling reactor 20, and the belt-pulling reactor 20 is still fixed to the fixed end of the belt-pulling reactor 20. At this time, the belt-pulling reactor 20 tightens the vent plate 102 through its belt-pulling reactor 30, thereby causing the vent plate 102 to cover the vent port 101 and prevent gas from leaking from the vent port 101. When the pull-belt reactor 20 is in the released state, that is, the shearing structure performs a shearing action, at which time the shearing structure cuts the pull-belt 30 fixed on the pull-belt reactor 20, causing the pull-belt 30 fixed on the pull-belt reactor 20 to detach from the pull-belt reactor. That is, the second side of the vent plate 102 is blown open under the air pressure in the inner cavity of the airbag body, thereby removing the cover on the vent 101, so that a part of the gas in the inner cavity of the airbag body 10 is released, avoiding injury to passengers with smaller weight or incorrect sitting posture when the airbag deploys.

[0062] The above-mentioned shearing structure can be implemented in different ways. For example, the pull strap 30 passes through a shearing opening, one end of which is set on a telescopic rod. When the telescopic rod retracts under the action of electromagnetic force, the blades opposite to the shearing opening shrink and overlap, cutting the pull strap passing through this opening, thus performing the shearing action.

[0063] Next, the structure of the baffle 103 will be described in detail.

[0064] The baffle is a long strip baffle 1031, with both sides of the long strip baffle 1031 fixed to the airbag body 10. The second side of the deflation plate 102 extends from below the long strip baffle 1031 to connect with the pull strap 30.

[0065] Specifically, as shown in Figures 3-4, the elongated baffle 1031 is fixed to the airbag body 10 on the second side of the vent plate 102, that is, the left and right ends of the elongated baffle 1031 are sewn onto the airbag body 10. The elongated baffle 1031 is used to press down the second side of the vent plate 102. The elongated baffle 1031 can tightly cover the vent 101 with the vent plate 102 to prevent the gas in the inner cavity of the airbag body from leaking from the vent 101.

[0066] In this embodiment, in order to better cover the vent 101 with the vent plate 102, the second side of the vent plate 102 can extend from the channel between the elongated baffle 1031 and the airbag body and connect with the pull strap 30. It can be understood that the left and right ends of the elongated baffle 1031 are fixed to the airbag body 10, so that the elongated baffle 1031 and the airbag body form a channel, which is the channel for the pull strap 30 and the vent plate 102 to move and be released.

[0067] The baffle is a U-shaped baffle 1032. The two sides of the U-shape of the U-shaped baffle are fixed to the airbag body 10. The second side of the deflation plate 102 is inserted into the U-shaped bottom of the U-shaped baffle 1032 that is not fixed to the airbag body 10, so as to connect with the pull strap 30. The two sides of the U-shape of the U-shaped baffle are used to cover the sides of the deflation plate that are not fixed to the airbag body.

[0068] Specifically, as shown in Figures 5-6, the baffle can also be a U-shaped baffle 1032. The opening of the U-shaped baffle 1032 faces the first side of the vent plate 102. The second side of the vent plate 102 can be inserted under the U-shaped baffle 1032 through the opening and connected to the pull strap 30 from the U-shaped bottom of the baffle. The opening of the U-shaped baffle is opposite to the U-shaped bottom of the baffle, and the U-shaped bottom of the baffle is not fixed to the airbag body. Only the left and right sides of the U-shape of the baffle are fixed to the airbag body, thereby forming a channel between the U-shaped bottom of the baffle and the airbag body. This channel is for the pull strap 30 and the vent plate 102 to move and be released.

[0069] In this embodiment, when the pull-belt reactor 20 is in a tensioned state, the left and right sides of the U-shaped baffle can cover the vent 101 with the left and right sides of the vent plate 102 not fixed to the airbag body, thereby strengthening the coverage of the vent plate 102 over the vent 101 and preventing gas from leaking from the vent 101 into the airbag body. Furthermore, when the pull-belt reactor 20 is in a released state, to better release the vent plate 102 from the vent 101, it is not necessary for the second side of the vent plate 102 to extend from the bottom of the U-shaped baffle; instead, the pull-belt 30 can extend from the bottom of the U-shaped baffle into the airbag body and connect to the second side of the vent plate.

[0070] It should also be noted that the middle part of the U-shaped baffle 1032 is not sealed, and the vent 101 can be exposed so that the gas in the airbag body can be released better when the vent plate 102 is removed from the vent 101.

[0071] The baffle is an annular baffle, and the edges of the annular baffle, except for the opening, are fixed to the airbag body. The opening of the annular baffle is a channel for the pull strap and the deflation plate to move and be released.

[0072] Specifically, as shown in Figures 7-8, the baffle can also be a ring-shaped baffle 1033. The opening of the ring-shaped baffle 1033 faces the connection between the pull strap 30 and the vent plate 102. That is, the opening of the ring-shaped baffle 1033 is reserved and not sewn onto the airbag body. The opening is for the pull strap 30 to be inserted into the airbag body from the opening and connected to the second side of the vent plate 102.

[0073] Furthermore, except for the opening of the annular baffle 1033, the edges of the remaining portion are fixed to the airbag body 10. The opening of the annular baffle 1033 serves as a channel for the pull strap 30 and the vent plate 102 to move and extend. In this embodiment, except for the opening, the edges of the annular baffle 1033 can cover the vent port 101 with the edge of the vent plate that is not fixed to the airbag body. This prevents gas in the inner cavity of the airbag body from leaking out of the vent port 101 when the pull strap reactor 20 is in a taut state. Moreover, the central portion of the annular baffle 1033 can expose the vent port 101, meaning that the annular baffle 1033 does not cover the vent port 101.

[0074] 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. However, it is not to say that the structure of the baffle 103 is limited to the above three ways. The embodiments of this application do not exhaustively list the structures of the baffle. It can be understood that as long as the baffle can cover or uncover the vent, the structure of the baffle involved is within the protection scope of the embodiments of this application.

[0075] The pull belt includes a first pull belt and a second pull belt. The first end of the first pull belt and the first end of the second pull belt are respectively connected to the two ends of the second side of the vent plate. The second end of the first pull belt and the second end of the second pull belt are both connected to the pull belt reactor.

[0076] Specifically, as shown in Figure 8, the pull strap includes a first pull strap 301 and a second pull strap 302. The first end of the first pull strap and the first end of the second pull strap are respectively connected to the left and right ends of the second side of the vent plate. To better cover the vent plate 102 with the vent 101, the length and width of the first pull strap 301 and the second pull strap 302 can be equal, and their connection positions with the second side of the vent plate are symmetrical about the center line of the vent plate. Of course, it is also possible that the length and width of the first pull strap 301 and the second pull strap 302 are not equal. Subsequently, the second ends of both the first and second pull straps can be connected to the fixed end of the pull strap reactor 20.

[0077] Furthermore, as shown in Figure 8, the pull belt also includes a third pull belt 303, the first end of the third pull belt is connected to the second end of the first pull belt and the second end of the second pull belt respectively, and the second end of the third pull belt is connected to the pull belt reactor.

[0078] Specifically, the second end of the first pull belt can be connected to the second end of the second pull belt and the first end of the third pull belt, or the second end of the first pull belt can be connected to the second end of the second pull belt first, and then connected to the first end of the third pull belt, while fixing the second end of the third pull belt to the fixed end of the pull belt reactor.

[0079] The pull-belt reactor 20 pulls the vent plate 102 with the pull-belt 30, so that the vent plate 102 covers the vent port 101; when the pull-belt reactor 20 is in the released state, the pull-belt reactor 20 releases the pull-belt 30, so that the second side of the vent plate 102 covering the vent port 101 is blown open by the air pressure impact in the inner cavity of the airbag body, thereby releasing the cover on the vent port 101.

[0080] Specifically, the tension and release states of the belt reactor 20 can be switched by electronic control. Furthermore, the belt reactor 20 can be used in conjunction with a detection device, so that when the detection device detects that the passenger's weight is too light or the sitting posture is incorrect, the belt reactor 20 is controlled to be in the release state, and when the detection device detects that the passenger's weight is normal or the sitting posture is normal, the belt reactor 20 is controlled to be in the tension state.

[0081] The detection device may include sensors, a posture recognition system, etc. When the detection device includes sensors, the sensors can determine that the passenger is underweight when their weight is less than a preset value, and determine that the passenger's weight is normal when their weight is not less than the preset value. When the detection device includes a posture recognition system, the posture recognition system can determine that the passenger has normal posture when their weight is within a preset sitting posture area, and determine that the passenger has incorrect posture when their weight is outside the preset sitting posture area. Of course, any other feasible method can be used to determine the passenger's weight and posture, and this is not limited here.

[0082] When the pull strap reactor 20 is in the released state, the air pressure inside the airbag body is too high, which could cause injury to passengers with smaller bodies or improper sitting posture when the airbag deploys, and may obstruct normal breathing. Therefore, it is necessary to release some of the gas inside the airbag body. Specifically, when the pull strap reactor 20 responds, the pull strap 30 detaches from the pull strap reactor 20, and the tension applied by the pull strap 30 to the vent 101 is simultaneously released. Therefore, under the impact of the air pressure inside the airbag body, the second side of the vent flap 102 covering the vent 101 is blown open, thus removing the cover from the vent 101 and relieving the pressure inside the airbag body.

[0083] When the detection device detects that the passenger's weight or sitting posture is normal, the control of the pull belt reactor 20 is to be in a taut state. That is, at this time, the pull belt reactor 20 pulls the vent plate 102 with the pull belt 30 so that the vent plate 102 covers the vent port 101. At the same time, the baffle 103 covering the vent plate 102 can strengthen the coverage of the vent plate 102 on the vent port 101, and prevent the gas in the inner cavity of the airbag body 10 from leaking out of the vent port 101.

[0084] This application provides an airbag, comprising: an airbag body 10 and a strap reactor 20; the airbag body 10 has a vent 101 on its airbag wall; the airbag body has a vent plate 102 located at the vent 101 and used to cover the vent, a first side of the vent plate 102 is fixed to the airbag body 10, and a baffle 103 is provided on the second side of the vent plate, the baffle 103 is fixed to the airbag body, and the baffle 103 has a channel for the second side of the vent plate to pass through, the second side of the vent plate passing through the channel and connected to the strap reactor 20 via a strap 30. On the airbag body 10, the baffle 103 is used to press the vent plate 102 so that the vent plate 102 fits against the airbag body 10 and covers the vent 101, with the baffle 102 exposed above the vent 101; when the pull belt reactor 20 is in the tensioned state, the pull belt reactor 20 pulls the vent plate 102 with the pull belt 30 so that the vent plate 102 covers the vent 101; when the pull belt reactor 20 is in the release state, the pull belt reactor 20 releases the pull belt 30, so that the second side of the vent plate covering the vent 101 is blown open under the air pressure impact of the airbag body cavity, thereby releasing the cover of the vent 101.

[0085] This application uses a pull strap 30 to tighten the vent plate 102, so that the vent plate 102 covers the vent port 101. At the same time, the baffle 103 covering the second side of the vent plate 102 allows the vent plate to better fit the surface of the airbag body, which can strengthen the coverage of the vent plate 102 over the vent port 101 and prevent gas leakage from the inner cavity of the airbag body. The vent port 101 is open when the pull strap reactor is in the released state. When the pull strap reactor 20 releases the pull strap 30, the vent plate 102 covering the vent port 101 is blown open, so that some of the gas in the inner cavity of the airbag body is released. This prevents the air pressure in the inner cavity of the airbag body from being too high and causing injury to passengers with smaller weight or incorrect sitting posture when the airbag deploys. It can also prevent obstruction of normal breathing and secondary injury to passengers.

[0086] This application also provides a vehicle that includes the aforementioned airbag, as detailed below.

[0087] This application embodiment also provides a car, the car including the above-mentioned airbag, the airbag including: an airbag body and a strap reactor;

[0088] The airbag body has an air vent on its airbag wall;

[0089] The airbag body is provided with an air vent plate located at the air vent and used to cover the air vent. The first side of the air vent plate is fixed to the airbag body. A baffle plate is provided on the second side of the air vent plate. The baffle plate is fixed to the airbag body and has a channel for the second side of the air vent plate to pass through. The second side of the air vent plate passes through the channel and is connected to the pull belt reactor through the pull belt. The baffle plate is used to press the air vent plate so that the air vent plate fits against the airbag body and covers the air vent. The baffle plate is exposed at the air vent.

[0090] When the pull-belt reactor is in the tensioned state, the pull-belt reactor tensions the vent plate with the pull belt, so that the vent plate covers the vent. When the pull-belt reactor is in the release state, the pull-belt reactor releases the pull belt, so that the second side of the vent plate covering the vent is blown open by the air pressure impact in the inner cavity of the airbag body, thereby removing the cover from the vent.

[0091] The specific implementation of the airbag in this embodiment is analogous to the airbag in the above embodiment. For details, please refer to the relevant content of the above embodiment, which will not be repeated here.

[0092] It should be noted that although several structures, components, or units for implementing the relevant functions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the specific embodiments of this application, the features and functions of two or more structures, components, or units described above can be embodied in one structure, component, or unit. Conversely, the features and functions of one structure, component, or unit described above can be further divided and embodied by multiple components, structures, or units.

[0093] Furthermore, although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.

[0094] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

An airbag characterized by The airbag comprises an airbag body and a pull belt reactor; A deflation port is arranged on the airbag wall of the airbag body; A deflation piece is arranged on the airbag body and covers the deflation port, the first side of the deflation piece is fixed on the airbag body, a baffle is arranged on the deflation piece at the second side of the deflation piece, the baffle is fixed on the airbag body, a channel is arranged on the baffle for the second side of the deflation piece to pass through, the second side of the deflation piece penetrates through the channel and is connected to the pull belt reactor through the pull belt, the baffle is used to press the deflation piece to make the deflation piece fit the airbag body to cover the deflation port, and the baffle exposes the deflation port; When the pull belt reactor is in the tension state, the pull belt reactor tightens the deflation piece through the pull belt to cover the deflation port, and when the pull belt reactor is in the release state, the pull belt reactor releases the pull belt, and the second side of the deflation piece covering the deflation port is blown open under the impact of the air pressure in the airbag body cavity, so that the covering of the deflation port is removed. The airbag according to claim 1, wherein The baffle is a long strip-shaped baffle, the two sides of the long strip-shaped baffle are fixed on the airbag body, and the second side of the deflation piece extends from below the long strip-shaped baffle to be connected to the pull belt. The airbag according to claim 1, wherein The baffle is a U-shaped baffle, the two sides of the U-shaped baffle are fixed on the airbag body, the second side of the deflation piece is inserted into the U-shaped bottom of the U-shaped baffle which is not fixed on the airbag body to be connected to the pull belt, and the two sides of the U-shaped baffle are used to cover the side of the deflation piece which is not fixed on the airbag body. The airbag according to claim 1, wherein The baffle is a ring-shaped baffle, the edges of the ring-shaped baffle except the opening are fixed on the airbag body, and the opening of the ring-shaped baffle is a channel for the pull belt and the deflation piece to move and pull. The airbag according to claim 1, wherein The pull belt comprises a first pull belt and a second pull belt, the first ends of the first pull belt and the second pull belt are connected to the two ends of the second side of the deflation piece respectively, and the second ends of the first pull belt and the second pull belt are connected to the pull belt reactor. The airbag according to claim 5, wherein The pull belt further comprises a third pull belt, the first ends of the third pull belt are connected to the second ends of the first pull belt and the second pull belt respectively, and the second end of the third pull belt is connected to the pull belt reactor. The deflation piece has a shape that the width of the second side gradually narrows. The airbag according to claim 1, wherein A retractable winding structure is arranged on the pull belt reactor, and the pull belt is wound on the winding structure; when the pull belt reactor is in the tension state, the winding structure is locked and cannot be retracted, and when the pull belt reactor is in the release state, the winding structure is unlocked and can be retracted. The airbag according to claim 1, wherein ​ The airbag according to claim 1, wherein The pull tape reactor is provided with a shearing structure, and the pull tape is fixed on the pull tape reactor through the shearing structure; when the pull tape reactor is in a tension state, the shearing structure does not perform a shearing action; when the pull tape reactor is in a release state, the shearing structure performs a shearing action and cuts the pull tape, so that the pull tape is loosened. An automobile characterized by comprising: An airbag comprising the safety belt according to any one of claims 1 to 9.

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