Air bag restraint system and vehicle comprising air bag restraint system

Abstract

The utility model belongs to the technical field of new energy automobiles, and particularly provides an air bag restraint system and a vehicle comprising the air bag restraint system. The air bag aims at solving the problem that an existing air bag is prone to hurting a driver or passengers due to the fact that internal pressure is too large. Therefore, the safety air bag comprises an air bag shell, an air bag body, an air bag pull belt, an igniter and an active air leakage mechanism, and a passive air leakage opening and an active air leakage opening are formed in the air bag body; the active deflation mechanism comprises an active ignition generator, an active deflation structure and an active deflation hole drawstring, the active ignition generator is located in the air bag, the active deflation structure is installed on the air bag and forms an active deflation channel, and the active deflation hole drawstring is arranged on the active ignition generator in a sleeving mode; the two ends of the active air leakage hole drawstring are connected with the active air leakage structure, and the connection positions are different. According to the safety air bag, sealing of the active air leakage opening can be achieved under the condition that the air bag body is inflated and the active ignition generator is not ignited, and air leakage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the new energy automobile technical field, specifically provides a safety air bag and the vehicle including the safety air bag. BACKGROUND

[0002] It is known that the automobile frontal collision safety air bag (driver air bag and passenger air bag) has the existence of the air vent in the self design, and the size of the air vent directly affects the protection performance of the automobile safety air bag to the driver and passenger, and the size and quantity of the air vent of the frontal collision safety air bag installed on the automobile are certain, and the designed automobile safety air bag is also designed according to the standard adult male body shape.

[0003] If the driver or passenger is small in size, due to the driving and riding habits, the driver or passenger will adjust the seat to the front direction, so that the distance between the driver and the passenger and the frontal safety air bag is reduced, and if the vehicle collides frontally at this time, the driver and the passenger will contact the safety air bag in advance, and the excessive pressure in the early air bag will cause harm to the driver and the passenger.

[0004] Correspondingly, the prior art needs a new technical solution to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the above technical problems, that is, solving the problem that the existing air bag is easy to cause harm to the driver or passenger due to the excessive internal pressure.

[0006] In a first aspect, the utility model provides a kind of air bag, the air bag includes air bag shell, air bag bag, air bag pull belt, igniter and active deflation mechanism, the air bag bag is connected with the air bag shell, the igniter is installed on the air bag shell, the air bag pull belt is located inside the air bag bag and the inner wall of the air bag shell with the air bag bag is connected, passive deflation port and active deflation port are equipped on the air bag bag;The active deflation mechanism includes active ignition generator, active deflation structure and active deflation hole pull belt, the active ignition generator is located inside the air bag bag and is installed on the air bag shell, the active deflation structure is installed on the air bag bag and is formed with active deflation passage, wherein the active deflation passage is communicated with the internal space of the air bag bag by the active deflation port, the active deflation hole pull belt is sleeved on the active ignition generator, the two ends of the active deflation hole pull belt are connected with the active deflation structure and its connection position is different, to make the air bag bag in the case of inflation and the active ignition generator is not ignited, the active deflation hole pull belt limits the active deflation structure in the air bag bag and can block the active deflation passage, to avoid the air bag bag leaks through the active deflation port.

[0007] In the above preferred technical solutions of air bag, the active deflation structure includes connected connection transition part and deflation part, one end of the connection transition part is connected with the air bag bag, the other end of the connection transition part is connected with the deflation part, and the inner diameter of the deflation part is smaller than the inner diameter of the connection transition part, and the two ends of the active deflation hole pull belt are connected with the deflation part.

[0008] In the above preferred technical solutions of air bag, the connection position of the first end of the active deflation hole pull belt with the deflation part and the connection position of the second end of the active deflation hole pull belt with the deflation part are symmetrically arranged relative to the central axis of the deflation part, and the deflation part is equally divided into two parts.

[0009] In the above preferred technical solutions of air bag, the connection transition part is in the shape of a circular truncated cone, and the large-diameter side thereof is connected with the air bag bag, and the small-diameter side thereof is connected with the deflation part, and / or the deflation part is in the shape of a cylindrical tube.

[0010] In the above preferred technical solutions of air bag, the distance from the large-diameter side to the small-diameter side of the connection transition part is not less than 1.4 times the diameter of the large-diameter side of the connection transition part, and the distance from the large-diameter side to the small-diameter side of the connection transition part is not less than 1.85 times the small-diameter of the connection transition part.

[0011] In the above preferred technical solutions of air bag, the active deflation port is arranged on the side surface of the air bag bag in the inflated state.

[0012] In the preferred technical scheme of the above airbag, the igniter comprises a first igniter and a second igniter, and the first igniter and the second igniter are both mounted on the airbag housing.

[0013] In the preferred technical scheme of the above airbag, the airbag pull strap comprises a first pull strap, a second pull strap, a third pull strap and a fourth pull strap, the connection positions of the first pull strap, the second pull strap, the third pull strap and the fourth pull strap with the airbag bag are respectively located at 12 o'clock direction, 4 o'clock direction, 8 o'clock direction and 6 o'clock direction of the front of the airbag bag, in the case of inflating of the airbag bag, a contact area is formed between the airbag bag and the connection points of the first pull strap, the second pull strap and the third pull strap, the convexity of the connection area of the airbag bag and the first pull strap is not higher than the convexity of the connection areas of the airbag bag and the second pull strap and the third pull strap, and a concave protection area is formed in the partial area of the connection point of the fourth pull strap and the airbag bag.

[0014] In the preferred technical scheme of the above airbag, the length of the fourth pull strap is 100mm-160mm.

[0015] In the second aspect, the utility model provides a kind of vehicle, and the vehicle includes the above airbag.

[0016] In the case of adopting the technical scheme, the safety air bag is provided with the active deflation mechanism, the active deflation mechanism comprises an active ignition generator, an active deflation structure and an active deflation hole pull belt, the active deflation hole pull belt is sleeved on the active igniter, and the two ends of the active deflation hole pull belt are connected with the active deflation structure and are different in the connection positions, so that the active deflation hole pull belt limits the active deflation structure in the air bag bag and can block the active deflation passage in the case that the air bag bag is inflated and the active ignition generator is not ignited, to avoid air leakage through the active deflation hole, the setting mode can make the active ignition generator ignite when the rigidity of the air bag bag is too large, so as to release the active deflation structure, and the air bag bag can deflate through the passive deflation hole and the active deflation hole at the same time, to adjust the rigidity of the air bag bag, so as to avoid injury to the driver or passenger due to excessive pressure in the air bag bag, and more effectively protect the safety of personnel, in addition, the two ends of the active deflation hole pull belt are connected to different positions of the active deflation structure, the active deflation structure is pulled tight at two different positions, and then the active deflation passage is blocked, so that the active deflation hole pull belt can lock the active deflation passage in the active deflation structure in the case that the air bag bag is inflated and the active ignition generator is not ignited, no air leakage hole and air leakage gap are formed, the active deflation hole is sealed, air leakage of the air bag bag through the active deflation hole and the active deflation passage is avoided, the active deflation hole is completely sealed when deflation is not needed, the rigidity of the air bag bag is more conveniently controlled, and the air bag bag is more conveniently applied.

[0017] Further, the active deflation structure is provided with a connecting transition portion and a deflation portion connected with each other, the connecting transition portion is connected with the air bag bag, the inner diameter of the connecting transition portion is larger than that of the deflation portion, and the two ends of the active deflation hole pull belt are connected with the deflation portion, in the case that the air bag bag is inflated and the active ignition generator is not ignited, the deflation portion is more easily formed into a blocking structure to seal the active deflation hole under the action of the pulling force of the active deflation hole pull belt, and air leakage of the air bag bag through the active deflation hole is effectively avoided.

[0018] Further, the connecting positions of the first end of the active deflation hole pull belt and the deflation portion and the connecting positions of the second end of the active deflation hole pull belt and the deflation portion are symmetrically arranged with respect to the central axis of the deflation portion, and the deflation portion is equally divided into two parts, in the setting mode, the deflation portion is pulled from two opposite positions, the restriction of the active deflation hole pull belt on the deflation portion is improved in use, the active deflation passage is better blocked, the sealing effect of the active deflation hole is improved, and air leakage of the active deflation passage due to excessive impact force at the moment of opening of the air bag bag is avoided.

[0019] Further, the connecting transition part is provided in a circular truncated cone shape, and the large-diameter side is connected with the air bag, and the small-diameter side is connected with the deflation part, so that the sewing and fixing are facilitated, and the difficulty of sealing the active deflation port is reduced.

[0020] Further, the deflation part is provided in a cylindrical shape, so that the production and manufacturing are facilitated, and the use is facilitated.

[0021] Further, the distance from the large-diameter side to the small-diameter side of the connecting transition part is not less than 1.4 times of the diameter of the large-diameter side of the connecting transition part, and the distance from the large-diameter side to the small-diameter side of the connecting transition part is not less than 1.85 times of the small-diameter of the connecting transition part, so that the connecting transition part is kept in a certain size, and in the process of pulling the active deflation port, the small-diameter side of the connecting transition part is blocked by the deflation part, so that the difficulty of sealing the active deflation port is reduced, and the air leakage is effectively avoided.

[0022] Further, the active deflation port is arranged on the side of the air bag in the inflated state, so that the harm to the person during deflation is avoided, and the safety performance is improved.

[0023] Further, the air bag pull belts are provided as the first pull belt, the second pull belt, the third pull belt and the fourth pull belt arranged in the 12 o'clock direction, the 4 o'clock direction, the 8 o'clock direction and the 6 o'clock direction respectively, so that the first pull belt in the 12 o'clock position is arranged to pull the air bag during the opening of the air bag, so that the air bag is prevented from contacting the face of the person during the opening of the air bag, and the phenomenon of hitting the face is avoided, and the safety of the person is ensured during the opening of the air bag, in addition, the fourth pull belt in the 6 o'clock position is arranged to form a concave protection area in the lower region of the air bag, and the region corresponds to the chest region of the person, so that the air bag is prevented from pressing the heart and lung region of the person, and the harm to the human body caused by the excessive rigidity of the air bag is avoided, and the safety of the person is better protected. In addition, through the arrangement of the four pull belts, the thickness of the air bag can be adjusted by adjusting the length of the pull belt, and the length of the corresponding pull belt can be reduced in the place where the air bag is thin, and the length of the corresponding pull belt can be increased in the place where the air bag is thick, so that the air bag can be applied to different driving situations and needs, and the production difficulty is reduced.

[0024] Further, the length of the fourth pull belt is arranged to be 100mm-160mm, so as to meet the application of different types of vehicles. BRIEF DESCRIPTION OF DRAWINGS

[0025] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0026] Figure 1is a structure schematic view of the safety air bag in a state that the air bag bag is inflated and the active ignition generator is not ignited, wherein the arrow represents the flowing route of the gas in the air bag;

[0027] Figure 2 is a structure schematic view of the safety air bag in a state that the air bag bag is inflated and the active ignition generator is not ignited, wherein the arrow represents the flowing route of the gas in the air bag;

[0028] Figure 3 is a connection structure schematic view of the active deflation structure and the air bag bag.

[0029] List of reference signs:

[0030] 1, air bag shell;

[0031] 2, air bag bag; 21, passive deflation port; 22, active deflation port;

[0032] 3, air bag pull belt; 31, first pull belt; 32, second pull belt; 33, third pull belt; 34, fourth pull belt;

[0033] 4, igniter; 41, first igniter; 42, second igniter;

[0034] 5, active deflation mechanism; 51, active ignition generator; 52, active deflation structure; 521, connection transition part; 522, deflation part; 53, active deflation hole pull belt; DETAILED DESCRIPTION

[0035] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0036] It should be noted that in the description of the present application, the terms "inner", "outer" and the like indicating the direction or position relationship of the terms are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and is not intended to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, it needs to be explained that, in the description of the utility model, unless another explicit provision and limitation, the terms "arrange", "connect", "connect", "install" should be broad understanding, for example, can be fixed connection, also can be detachable connection, or integral connection, can be direct connection, also can be indirectly connected through other components. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] Based on the technical problem that the existing air bag in the background art is easy to cause injury to the driver or occupant due to excessive internal pressure.

[0039] The utility model provides a kind of safety air bag, which is provided with a self-deflation mechanism, the self-deflation mechanism includes a self-ignition generator, a self-deflation structure and a self-deflation hole pull belt, wherein the self-deflation hole pull belt is sleeved on the self-ignition generator, and the two ends of the self-deflation hole pull belt are connected with the self-deflation structure at different positions, so that in the case that the air bag is inflated and the self-ignition generator is not ignited, the self-deflation hole pull belt restricts the self-deflation structure within the air bag and can block the self-deflation passage, to avoid air leakage through the self-deflation port. This arrangement allows the self-ignition generator to ignite when the air bag is too rigid, thereby releasing the self-deflation structure and allowing the air bag to deflate through both the passive deflation port and the self-deflation port, to adjust the rigidity of the air bag and prevent injury to the driver or occupant due to excessive internal pressure in the air bag. This effectively protects the safety of personnel. In addition, by connecting the two ends of the self-deflation hole pull belt to different positions of the self-deflation structure, the self-deflation structure is pulled tight at two different positions, thereby blocking the self-deflation passage. In the case that the air bag is inflated and the self-ignition generator is not ignited, the self-deflation hole pull belt can lock the self-deflation passage in the self-deflation structure, without air leakage ports or gaps, achieving airtightness of the self-deflation port, preventing air leakage through the self-deflation port and the self-deflation passage, and completely sealing the self-deflation port without the need for deflation, which is more convenient for controlling the rigidity of the air bag and facilitating its application.

[0040] Specifically, please refer to Figure 1 and Figure 2 The safety air bag of the utility model includes an air bag housing 1, an air bag 2, an air bag pull belt 3, an igniter 4 and a self-deflation mechanism 5.

[0041] The airbag bag 2 is connected with the airbag housing 1, the igniter 4 is installed on the airbag housing 1, and the igniter 4 can make the airbag bag 2 inflate after ignition, so that the airbag bag 2 maintains a certain rigidity, the airbag pull belt 3 is located inside the airbag bag 2 and connects the airbag housing 1 with the inner wall of the airbag bag 2, the airbag pull belt 3 is used to maintain a specific shape of the airbag bag 2 when the airbag bag 2 inflates, and the airbag bag 2 is provided with a passive air vent 21 and an active air vent 22.

[0042] Specifically, the active deflation mechanism 5 includes an active ignition generator 51, an active deflation structure 52 and an active deflation hole pull belt 53.

[0043] The active ignition generator 51 is located inside the airbag bag 2 and is installed on the airbag housing 1, the active deflation structure 52 is installed on the airbag bag 2 and forms an active deflation passage, wherein the active deflation passage communicates with the internal space of the airbag bag 2 through the active air vent 22, the active deflation hole pull belt 53 is sleeved on the active ignition generator 51, both ends of the active deflation hole pull belt 53 are connected with the active deflation structure 52, and the connection positions are different, please refer to Figure 1 So that in the case that the airbag bag 2 inflates and the active ignition generator 51 does not ignite, the active deflation hole pull belt 53 limits the active deflation structure 52 inside the airbag bag 2, and can block the active deflation passage, so as to avoid the airbag bag 2 leaking through the active air vent 22.

[0044] In addition, in the case that the airbag bag 2 inflates and the active ignition generator 51 ignites, please refer to Figure 2 The active deflation hole pull belt 53 is separated from the active ignition generator 51, thereby releasing the limitation of the active deflation structure 52, the active deflation structure 52 is blown out of the airbag bag 2 under the action of the pressure inside the airbag bag 2, so that the airbag bag 2 communicates with the external environment through the active deflation passage, thereby being able to deflate through the active air vent 22 and the active deflation passage, so as to adjust the rigidity of the airbag bag 2.

[0045] The structure setting mode of the utility model, through setting initiative leak mechanism 5 can make initiative ignition generator 51 ignite when air bag bag 2 rigidity is too big, thereby will open initiative leak structure 52, make air bag bag 2 can simultaneously through passive leak port 21 and initiative leak port 22 and leak, to adjust the rigidity of air bag bag 2, thereby avoid the harm to driver or passenger due to the pressure in air bag bag 2 is too big, more effectively protect personnel safety, in addition, through making the both ends of initiative leak hole pull belt 53 connect in different position of initiative leak structure 52, in two different positions, initiative leak structure 52 is pulled tight, and then initiative leak passage is blocked, thereby can in the situation of air bag bag 2 inflation and initiative ignition generator 51 not igniting, initiative leak hole pull belt 53 can lock initiative leak passage in initiative leak structure 52, will not appear air leakage and air leakage gap, realize the sealing of initiative leak port 22, avoid air bag bag 2 through initiative leak port 22 and initiative leak passage and leak, realize the complete sealing of initiative leak port 22 when not needing initiative leak port 22 and leak, more convenient control the rigidity of air bag bag 2, more convenient application.

[0046] Preferably, the initiative leak hole pull belt 53 is an elastic pull belt. The initiative leak hole pull belt 53 is a pull belt with a certain elasticity, so that the initiative leak hole pull belt 53 can effectively block the initiative leak passage regardless of the rigidity of the air bag bag 2 in the case that the initiative ignition generator 51 is not ignited, thereby avoiding air leakage of the air bag bag 2 through the initiative leak port 22 and the initiative leak passage. The length of the initiative leak hole pull belt 53 is self-set according to the size of the air bag bag 2, as long as the initiative leak hole pull belt 53 can lock the initiative leak passage in the initiative leak structure 52 in the case that the air bag bag 2 is inflated and the initiative ignition generator 51 is not ignited.

[0047] It should be noted that the utility model does not limit the specific position of the two ends of the initiative leak hole pull belt 53 connected to the initiative leak structure 52, as long as the initiative leak hole pull belt 53 can completely block the initiative leak passage and seal the initiative leak port 22 in the case that the air bag bag 2 is inflated and the initiative ignition generator 51 is not ignited. In actual application, the person skilled in the art can self-set the connection position of the two ends of the initiative leak hole pull belt 53 connected to the initiative leak structure 52 according to actual needs. The adjustment and change of the two connection positions do not deviate from the basic principle of the utility model, and should be limited within the protection scope of the utility model.

[0048] It should be noted that the two ends of the active leak hole pull belt 53 are connected to the active leak structure 52 at different positions, which means that the two connection positions of the two ends of the active leak hole pull belt 53 and the active leak structure 52 do not coincide and have a certain distance in the circumferential direction perpendicular to the central axis of the active leak passage.

[0049] Preferably, the first end of the active leak hole pull belt 53 is connected to the first connection position of the active leak structure 52, and the second end of the active leak hole pull belt 53 is connected to the second connection position of the active leak structure 52, which are located on a circumference perpendicular to the central axis of the active leak passage, and the first connection position and the second connection position divide the circumference into two parts, and the circumferential arc length of any one part is not less than one third of the circumference length.

[0050] Such a setting avoids the two connection positions being too close to form a good sealing structure for the active leak structure 52, which helps to improve the sealing effect of the active leak hole 22.

[0051] In a preferred embodiment, referring to Figure 3 The active leak structure 52 includes a connected transition connection part 521 and a leak part 522, one end of the transition connection part 521 is connected to the air bag 2, the other end of the transition connection part 521 is connected to the leak part 522, the inner diameter of the leak part 522 is smaller than the inner diameter of the transition connection part 521, and the two ends of the active leak hole pull belt 53 are connected to the leak part 522.

[0052] The active leak structure 52 is set as a connected transition connection part 521 and a leak part 522, the transition connection part 521 is connected to the air bag 2, the inner diameter of the transition connection part 521 is larger than the inner diameter of the leak part 522, and the two ends of the active leak hole pull belt 53 are connected to the leak part 522. In the case that the air bag 2 is inflated and the active ignition generator 51 is not ignited, the active leak hole pull belt 53 is more likely to form a sealing structure for the leak part 522 under the action of its tension, thereby sealing the active leak hole 22, and effectively preventing the air bag 2 from leaking through the active leak hole 22.

[0053] In a preferred embodiment, the connection position of the first end of the active leak hole pull belt 53 and the leak part 522 and the connection position of the second end of the active leak hole pull belt 53 and the leak part 522 are symmetrically arranged with respect to the central axis of the leak part 522, and the leak part 522 is equally divided into two equal parts.

[0054] The first end and the second end of the active air hole pull belt 53 are symmetrically arranged relative to the central axis of the air release part 522, and the air release part 522 is equally divided into two parts, and the active air hole pull belt 53 pulls the air release part 522 from the two opposite positions in use, which can improve the restriction of the active air hole pull belt 53 on the air release part 522, thereby better blocking the active air release passage and improving the sealing effect of the active air release port 22, and avoiding air leakage due to excessive impact force when the air bag 2 is opened.

[0055] In a preferred embodiment, referring to Figure 3 The connecting transition part 521 is in the shape of a circular truncated cone, and the large-diameter side is connected with the air bag 2, and the small-diameter side is connected with the air release part 522.

[0056] The connecting transition part 521 is in the shape of a circular truncated cone, and the large-diameter side is connected with the air bag 2, and the small-diameter side is connected with the air release part 522.

[0057] In a preferred embodiment, referring to Figure 3 The air release part 522 is in the shape of a circular cylinder.

[0058] The air release part 522 is in the shape of a circular cylinder, which is convenient for production and use.

[0059] In a preferred embodiment, referring to Figure 3 The distance from the large-diameter side to the small-diameter side of the connecting transition part 521 is not less than 1.4 times the diameter of the large-diameter side of the connecting transition part 521, that is, the length BE is not less than 1.4 times the length CD, and the distance from the large-diameter side to the small-diameter side of the connecting transition part 521 is not less than 1.85 times the small-diameter of the connecting transition part 521, that is, the length BE is not less than 1.85 times the length AB.

[0060] The distance from the large-diameter side to the small-diameter side of the connecting transition part 521 is not less than 1.4 times the diameter of the large-diameter side of the connecting transition part 521, and the distance from the large-diameter side to the small-diameter side of the connecting transition part 521 is not less than 1.85 times the small-diameter of the connecting transition part 521, which is a setting mode that makes the connecting transition part 521 maintain a certain size, and makes the air release part 522 easier to block the small-diameter side of the connecting transition part 521 during the pulling process of the active air hole pull belt 53, thereby reducing the difficulty of sealing the active air release port 22 and effectively preventing air leakage.

[0061] In a preferred embodiment, the active vent 22 is arranged on the side of the airbag bag 2 in the inflated state. Preferably, the active vent 22 is arranged on the left side of the airbag bag 2 in the inflated state, i.e. the active vent 22 is arranged towards the direction of the door, so that the gas is prevented from being discharged towards the human body, thereby ensuring safety.

[0062] Arranging the active vent 22 on the side of the airbag bag 2 in the inflated state can prevent injury to the human body during deflation, thereby improving safety performance.

[0063] In a preferred embodiment, the igniter 4 comprises a first igniter 41 and a second igniter 42, and the first igniter 41 and the second igniter 42 are both mounted on the airbag housing 1.

[0064] Arranging the igniter 4 as the first igniter 41 and the second igniter 42, and controlling the inflation of the airbag bag 2 by the first igniter 41 and the second igniter 42, so that the airbag bag 2 is in different stiffness, the first igniter 41 is ignited to make the airbag bag 2 reach the first stiffness, and the second igniter 41 is ignited to make the airbag bag 2 reach the second stiffness, wherein the second stiffness is greater than the first stiffness, so that the first igniter 41 and / or the second igniter 42 is ignited according to different collision conditions, so that the inflation state of the airbag bag 2 is consistent with the collision condition, and the safety of the personnel is better protected.

[0065] In a preferred embodiment, the airbag strap 3 comprises a first strap 31, a second strap 32, a third strap 33 and a fourth strap 34, and the connection positions of the first strap 31, the second strap 32, the third strap 33 and the fourth strap 34 with the airbag bag 2 are located at the 12 o'clock direction, the 4 o'clock direction, the 8 o'clock direction and the 6 o'clock direction of the front of the airbag bag 2 respectively, and in the inflated state of the airbag bag 2, the area between the connection points of the airbag bag 2 and the first strap 31, the second strap 32 and the third strap 33 forms a contact area, and the convexity of the connection area of the airbag bag 2 and the first strap 31 is not higher than the convexity of the connection area of the airbag bag 2 and the second strap 32 and the third strap 33, and the partial area of the connection point of the fourth strap 34 and the airbag bag 2 forms a concave protection area. Wherein, the front of the airbag bag 2 refers to the side of the airbag bag 2 in the inflated state which directly contacts the human body.

[0066] The airbag pull strap 3 is arranged as the first pull strap 31, the second pull strap 32, the third pull strap 33 and the fourth pull strap 34 located at the 12 o'clock direction, the 4 o'clock direction, the 8 o'clock direction and the 6 o'clock direction respectively. Through the arrangement of the pull straps at the 12 o'clock and 6 o'clock directions in addition to the original two pull straps at the 4 o'clock and 8 o'clock directions, the first pull strap 31 at the 12 o'clock direction can pull the airbag bag 2 during the opening of the airbag bag 2, so as to avoid the contact between the airbag bag 2 and the face of the person during the opening of the airbag bag 2, thereby avoiding the phenomenon of hitting the face and ensuring the safety of the person. In addition, the fourth pull strap 34 at the 6 o'clock direction can form a concave protection area in the lower area of the airbag bag 2, and the area corresponds to the chest area of the person, so as to avoid the compression of the airbag bag 2 to the heart and lung area of the person, avoid the damage to the human body caused by the excessive rigidity in the airbag bag 2, and better protect the safety of the person. In addition, through the arrangement of the four pull straps, the thickness of the airbag bag 2 can be adjusted by adjusting the length of the pull strap at different positions. The length of the corresponding pull strap is reduced in the place where the airbag bag 2 is thin, and the length of the corresponding pull strap is increased in the place where the airbag bag 2 is thick, so as to be applicable to different driving situations and needs, and reduce the production difficulty. The structure arrangement can simultaneously meet the protection of different passengers in the markets of China, Europe and America, solve the contradiction between the non-belted safety work condition in the American market and the need for different airbag thicknesses due to space limitation in the Chinese market, and has a wider application scenario.

[0067] In a preferred embodiment, the length of the fourth pull strap 34 is 100mm-160mm.

[0068] The length of the fourth pull strap 34 is set to 100mm-160mm, which can meet the application of different models of vehicles. Those skilled in the art can set the length of the fourth pull strap 34 according to the different in-vehicle space of different models of vehicles.

[0069] In the second aspect, the utility model provides a kind of vehicle, and vehicle includes above-mentioned safety air bag.

[0070] The safety air bag of the present application is provided with three-stage ignition, which is first-stage ignition (corresponding to first igniter 41), second-stage ignition (corresponding to second igniter 42) and third-stage ignition (corresponding to active ignition generator 51).

[0071] In actual application, when the ACM (auxiliary control module) judges that it is a low-speed collision, the airbag does not need to be too rigid at this time, so the second-stage ignition is not started, only the first-stage ignition is started, that is, the second igniter 42 is not ignited, only the first igniter 41 is ignited, so that the airbag bag 2 is kept at a small rigidity, and if the internal pressure is still too high relative to the current collision speed after the first-stage ignition, the third-stage ignition can be performed at an appropriate time, that is, the active ignition generator 51 is ignited at an appropriate time, the active vent 22 is opened, so as to reduce the rigidity of the airbag bag 2. Conversely, if the ACM (auxiliary control module) judges that the current collision speed belongs to a high speed, the second-stage ignition needs to be started to increase the rigidity of the airbag, that is, the second igniter 42 is ignited, and whether the high rigidity of the airbag needs to be kept is judged according to the size of the passenger in the case of high speed, if yes (the high rigidity needs to be kept), the third-stage ignition is delayed to keep the active vent 22 closed to avoid air leakage of the active vent 22, and if no (the rigidity needs to be reduced), the third-stage ignition is directly performed to ignite the active ignition generator 51, so as to open the active vent 22, air is discharged through the active vent 22, so as to reduce the rigidity of the airbag bag 2.

[0072] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to the related technical features, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.

Claims

1. An airbag, characterized in that: The safety airbag comprises an airbag housing (1), an airbag bag (2), an airbag drawstring (3), an igniter (4) and an active deflation mechanism (5); the airbag bag (2) is connected to the airbag housing (1); the igniter (4) is mounted on the airbag housing (1); the airbag drawstring (3) is located inside the airbag bag (2) and connects the airbag housing (1) to the inner wall of the airbag bag (2); and the airbag bag (2) is provided with a passive deflation port (21) and an active deflation port (22); The active deflation mechanism (5) comprises an active ignition generator (51), an active deflation structure (52) and an active deflation hole drawstring (53), wherein the active ignition generator (51) is located inside the airbag bag (2) and is mounted on the airbag housing (1), the active deflation structure (52) is mounted on the airbag bag (2) and forms an active deflation channel, wherein the active deflation channel is connected to the internal space of the airbag bag (2) through the active deflation port (22), and the active deflation hole drawstring (53) is sleeved on the active ignition generator (51). Both ends of the active air-deflation hole drawstring (53) are connected to the active air-deflation structure (52) at different connection positions, so that when the airbag (2) is inflated and the active ignition generator (51) is not ignited, the active air-deflation hole drawstring (53) restricts the active air-deflation structure (52) within the airbag (2) and can block the active air-deflation channel to prevent the airbag (2) from leaking through the active air-deflation hole (22).

2. The airbag according to claim 1, characterized in that The active deflation structure (52) comprises a connected connection transition portion (521) and a deflation portion (522), one end of the connection transition portion (521) is connected to the airbag bag (2), and the other end of the connection transition portion (521) is connected to the deflation portion (522), and the inner diameter of the deflation portion (522) is smaller than the inner diameter of the connection transition portion (521), and both ends of the active deflation hole drawstring (53) are connected to the deflation portion (522).

3. The airbag according to claim 2, characterized in that: The connection position between the first end of the active air leakage hole drawstring (53) and the air leakage portion (522) and the connection position between the second end of the active air leakage hole drawstring (53) and the air leakage portion (522) are symmetrically arranged relative to the central axis of the air leakage portion (522), and the air leakage portion (522) is evenly divided into two identical parts.

4. The airbag according to claim 2, characterized in that: The connecting transition portion (521) is in the shape of a truncated cone, and its large-diameter side is connected to the airbag (2), and its small-diameter side is connected to the air release portion (522); And / or, the air release portion (522) is cylindrical.

5. The airbag according to claim 4, characterized in that: The distance from the large-diameter side to the small-diameter side of the connecting transition portion (521) is not less than 1.4 times the diameter of the large-diameter side of the connecting transition portion (521), and the distance from the large-diameter side to the small-diameter side of the connecting transition portion (521) is not less than 1.85 times the small diameter of the connecting transition portion (521).

6. The airbag according to claim 1, characterized in that The active air release port (22) is arranged on the side of the airbag bag (2) in the inflated state.

7. The airbag according to any one of claims 1 to 6, characterized in that The igniter (4) comprises a first igniter (41) and a second igniter (42), and the first igniter (41) and the second igniter (42) are both mounted on the airbag housing (1).

8. The airbag according to any one of claims 1 to 6, characterized in that The airbag drawstring (3) comprises a first drawstring (31), a second drawstring (32), a third drawstring (33) and a fourth drawstring (34); the connection positions of the first drawstring (31), the second drawstring (32), the third drawstring (33) and the fourth drawstring (34) with the airbag bag (2) are respectively located at the 12 o'clock direction, the 4 o'clock direction, the 8 o'clock direction and the 6 o'clock direction on the front of the airbag bag (2); When the airbag bag (2) is inflated, a contact area is formed in the area between the connection points of the airbag bag (2) and the first drawstring (31), the second drawstring (32) and the third drawstring (33), and the convexity of the connection area between the airbag bag (2) and the first drawstring (31) is not higher than the convexity of the connection area between the airbag bag (2) and the second drawstring (32) and the third drawstring (33), and a concave protection area is formed in a partial area of ​​the connection point between the fourth drawstring (34) and the airbag bag (2).

9. The airbag according to claim 8, characterized in that: The length of the fourth drawstring (34) is 100 mm to 160 mm.

10. A vehicle, characterized in that: The vehicle includes the airbag according to any one of claims 1 to 9.

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