CN222554891U - Safety airbag and automobile - Google Patents

Abstract

The present application provides a safety airbag and a car. The safety airbag comprises: an airbag body and a drawstring reactor; a first air release port is arranged on the airbag wall of the airbag body; a first baffle and a second baffle are arranged on the outer surface of the airbag body at the first air release port; a first side of the first baffle is fixed to a first side of the first air release port, and a first side of the second baffle is fixed to a second side of the first air release port; a first drawstring hole is arranged on the second side of the first baffle, and a second drawstring hole is arranged on the second side of the second baffle; a drawstring passes through the first drawstring hole and the second drawstring hole, and can pull the first baffle through the first drawstring hole, and pull the second baffle through the second drawstring hole; the drawstring extends from the first air release port into the inner cavity of the airbag body, and a first end of the drawstring is connected to the drawstring reactor. The safety airbag can ensure the inflation efficiency of the safety airbag while avoiding the injury to passengers with small weight or improper sitting posture when the safety airbag is deployed.

Description

Safety airbag and automobile

Technical Field

The application relates to the technical field of automobile parts, in particular to an airbag and an automobile.

Background

Automobiles become an indispensable transportation means for people to travel daily, and the safety performance of the automobiles is also receiving more and more attention. The safety airbag is taken as an important component of a passive safety system of an automobile, and the protection function of the safety airbag directly influences the life safety of passengers.

The airbag generally comprises a gas generator and an airbag body, and when the airbag is triggered, the gas generator inflates the inner cavity of the airbag body, so that the airbag body expands and pops up to protect passengers. But the high-strength air pressure in the inner cavity of the air bag body can always apply acting force to the air bag wall, and the air bag body has stronger impact force when being unfolded. If the weight of the passenger is small or the sitting posture is not correct, the unfolded airbag body can easily strike the passenger to cause injury, and the airbag wall can easily press the mouth and nose of the passenger all the time to obstruct the normal respiration of the passenger, so that the problem can even cause injury to the passenger. Therefore, it is a technical problem to be solved how to avoid injury to passengers with smaller weight or out of position sitting when the airbag is deployed while ensuring the inflation efficiency of the airbag.

Disclosure of utility model

The present application provides an airbag to solve at least one of the above-mentioned technical problems. The application also provides an automobile using the safety airbag.

The application provides an air bag, which comprises an air bag body and a drawstring reactor;

the airbag wall of the airbag body is provided with a first gas leakage port;

The air bag comprises an air bag body, wherein the outer surface of the air bag body is provided with a first baffle plate and a second baffle plate which are positioned at a first air leakage port;

The second side of the first baffle plate and the second side of the second baffle plate are connected with a pull belt, and the pull belt stretches into the inner cavity of the air bag body from the first air leakage port, and the first end of the pull belt is connected with a pull belt reactor;

When the pull belt reactor is in a tensioning state, the pull belt is pulled, so that the first baffle plate and the second baffle plate are partially overlapped under the action of the pull belt and cover the first air leakage port, and when the pull belt reactor is in a releasing state, the pull belt reactor releases the pull belt, so that the first baffle plate and the second baffle plate which cover the first air leakage port can be blown open under the air pressure impact of the inner cavity of the air bag body.

Optionally, the second end of the drawstring which is not connected with the drawstring reactor is fixed on the outer wall of the air bag body;

Or the second end of the drawstring which is not connected with the drawstring reactor is fixed on the inner wall of the inner cavity of the air bag body.

Optionally, a second end of the pull strap opposite to the first end is fixed on the first baffle plate, and the pull strap penetrates through a second pull strap hole on the second side of the second baffle plate from the second end and then extends into the inner cavity of the air bag body from the first air leakage port;

Or, a second end of the drawstring opposite to the first end is fixed on the second baffle plate, and the drawstring penetrates through a first drawstring hole on the second side of the first baffle plate from the second end and then stretches into the inner cavity of the air bag body from the first air leakage port.

Optionally, a first pull strap hole is formed on the second side of the first baffle plate, a second pull strap hole is formed on the second side of the second baffle plate, and a pull strap passes through the first pull strap hole and the second pull strap hole, can pass through the first baffle plate through the first pull strap Kong Laye, and can pass through the second baffle plate through the second pull strap Kong Laye.

Optionally, the first draw tape hole and the second draw tape hole are two, and two pairs of first draw tape holes and second draw tape holes corresponding to each other are formed through corresponding position relations;

When the stretching strap reactor is in a tensioning state and the first baffle piece and the second baffle piece are partially overlapped, the first stretching strap hole and the second stretching strap hole which are mutually corresponding are mutually overlapped.

Optionally, the pull strap includes a first section of pull strap passing through one pair of first and second pull strap apertures and a second section of pull strap passing through the other pair of first and second pull strap apertures.

Optionally, the pull belt includes a first section pull belt, a second section pull belt and a third section pull belt, the first section pull belt passes through a pair of first pull belt holes and second pull belt holes, the second section pull belt passes through another pair of first pull belt holes and second pull belt holes, the third section pull belt is arranged in the inner cavity of the air bag body, one end of the third section pull belt is connected with the first section pull belt and the second section pull belt respectively, and the other end of the third section pull belt is used as a first end of the pull belt connected with the pull belt reactor.

Optionally, a second air leakage port is further formed in the air bag wall of the air bag body;

the air bag comprises an air bag body, wherein the outer surface of the air bag body is provided with a third baffle plate and a fourth baffle plate which are positioned at a second air leakage port;

The second side of the third baffle plate and the second side of the fourth baffle plate are connected with another drawstring, the drawstring stretches into the inner cavity of the air bag body from the second air leakage port, and the first end of the drawstring is connected to the drawstring reactor.

Optionally, a rotatable winding mechanism is arranged on the pull belt reactor, the first end of the pull belt is wound on the winding mechanism, when the pull belt reactor is in a tensioning state, the winding mechanism is locked and cannot rotate, and when the pull belt reactor is in a releasing state, the winding mechanism is unlocked and can rotate.

Optionally, a shearing mechanism is arranged on the pull belt reactor, the first end of the pull belt is fixedly connected to the pull belt reactor through the shearing mechanism, when the pull belt reactor is in a tensioning state, the shearing mechanism does not execute shearing action, when the pull belt reactor is in a releasing state, the shearing mechanism executes shearing action, and the pull belt is sheared at a position close to the first end of the pull belt, so that the pull belt is loosened.

The application also provides a vehicle comprising an airbag as possible in any of the above.

Compared with the prior art, the application has the following advantages:

in the safety airbag, a first air leakage port is arranged on an airbag wall of an airbag body, the first air leakage port is arranged on the airbag wall of the airbag body, and a first baffle and a second baffle which can be partially overlapped are arranged on the outer surface of the airbag body and controlled through a pull belt. When the gasbag body is inflated, can detect the passenger through detection device, if passenger's weight is less or the position of sitting is improper, then control stretching strap reactor loosens the stretching strap, just can remove first separation blade and second separation blade and to the cover of first gas vent, make gas can follow first gas vent and release to reduce the atmospheric pressure of gasbag body inner chamber, alleviate the impact to the passenger when the gasbag body is expanded, cause the injury to the passenger of less or position of sitting of weight when avoiding the air bag to expand. The air bag wall can not squeeze the human body, so that the air bag wall can not block the mouth and nose of the human body, the respiration of passengers is not blocked, and the secondary accident caused by the expansion of the air bag is avoided. Meanwhile, as the pull belt directly stretches into the inner cavity of the air bag from the air leakage opening, when the first baffle plate and the second baffle plate are pulled by the pull belt to cover the first air leakage opening, gas in the air bag body can not escape basically, so that the inflation efficiency of the air bag is ensured, and meanwhile, the damage to passengers with smaller weight or improper sitting posture caused by the deployment of the air bag is avoided.

Drawings

Fig. 1 is a schematic structural view of a pull-strap reactor of an airbag according to an embodiment of the present application in a tensioned state.

Fig. 2 is a schematic structural view of a draw-strap reactor of an airbag according to an embodiment of the present application in a released state.

Fig. 3 is a cross-sectional view of a distal airbag pull strap according to an embodiment of the present application pulling on a first flap and a second flap to cover a first venting port.

Fig. 4 is a schematic structural view of an airbag body of an airbag according to an embodiment of the present application.

Fig. 5 is a schematic view showing a state in which a second end of a draw tape of an airbag according to an embodiment of the present application is fixed to an outer wall of the airbag and a draw tape reactor is in a tensioned state.

Fig. 6 is a schematic view showing a state of a draw tape reactor and a draw tape when a second end of the draw tape of an airbag according to an embodiment of the present application is fixed to an outer wall of the airbag and the draw tape reactor is in a released state.

Fig. 7 is a schematic view showing a state in which a second end of a draw tape of an airbag according to an embodiment of the present application is fixed to a first flap and a draw tape reactor is in a tensioned state.

Fig. 8 is a schematic view showing a state of a draw-strap reactor and a draw-strap when a second end of the draw-strap of an airbag according to an embodiment of the present application is fixed to a first baffle and the draw-strap reactor is in a released state.

Fig. 9 is a schematic view showing a state of a draw-strap reactor and a draw-strap when a second end of the draw-strap of an airbag according to an embodiment of the present application is fixed to a second baffle and the draw-strap reactor is in a released state.

Reference numerals:

A first venting port 11;

The first baffle 21, the first draw tape hole 211, the second baffle 22, the second draw tape hole 221;

A pull strap 30;

a draw tape reactor 40, a winding mechanism 41;

A gas generator 50.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than those herein described, and those skilled in the art will readily appreciate that the present application may be similarly embodied without departing from the spirit or essential characteristics thereof, and therefore the present application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The airbag generally comprises a gas generator and an airbag body, and when the airbag is triggered, the gas generator inflates the inner cavity of the airbag body, so that the airbag body expands and pops up to protect passengers. But the high-strength air pressure in the inner cavity of the air bag body can always apply acting force to the air bag wall, and the air bag body has stronger impact force when being unfolded. If the weight of the passenger is small or the sitting posture is not correct, the unfolded airbag body can easily strike the passenger to cause injury, and the airbag wall can easily press the mouth and nose of the passenger all the time to obstruct the normal respiration of the passenger, so that the problem can even cause injury to the passenger. Therefore, it is a technical problem to be solved how to avoid injury to passengers with smaller weight or out of position sitting when the airbag is deployed while ensuring the inflation efficiency of the airbag.

To solve the above-described problems, the present embodiment provides a viable airbag. In the safety airbag, a first air leakage port is arranged on an airbag wall of an airbag body, the first air leakage port is arranged on the airbag wall of the airbag body, and a first baffle and a second baffle which can be partially overlapped are arranged on the outer surface of the airbag body and controlled through a pull belt. When the airbag body is inflated, the passenger can be detected through the detection device, if the weight of the passenger is smaller or the sitting posture is not correct, the pulling belt reactor is controlled to loosen the pulling belt, and the covering of the first blocking piece and the second blocking piece on the first air leakage opening can be relieved, so that the air can be discharged from the first air leakage opening, the air pressure in the inner cavity of the airbag body is reduced, the impact on the passenger when the airbag body is unfolded is slowed down, and the injury to the passenger with smaller weight or the incorrect sitting posture when the airbag is unfolded is avoided. The air bag wall can not squeeze the human body, so that the air bag wall can not block the mouth and nose of the human body, the respiration of passengers is not blocked, and the secondary accident caused by the expansion of the air bag is avoided. Meanwhile, as the pull belt directly stretches into the inner cavity of the air bag from the air leakage opening, when the first baffle plate and the second baffle plate are pulled by the pull belt to cover the first air leakage opening, gas in the air bag body can not escape basically, so that the inflation efficiency of the air bag is ensured, and meanwhile, the damage to passengers with smaller weight or improper sitting posture caused by the deployment of the air bag is avoided.

As shown in fig. 1,2, 3, 4, 5 and 6, fig. 1 is a schematic structural view of a drawstring reactor of an airbag according to an embodiment of the present application in a tensioned state. Fig. 2 is a schematic structural view of a draw-strap reactor of an airbag according to an embodiment of the present application in a released state. Fig. 3 is a cross-sectional view of a distal airbag pull strap according to an embodiment of the present application pulling on a first flap and a second flap to cover a first venting port. Fig. 4 is a schematic structural view of an airbag body of an airbag according to an embodiment of the present application. Fig. 5 is a schematic view showing a state in which a second end of a draw tape of an airbag according to an embodiment of the present application is fixed to an outer wall of the airbag and a draw tape reactor is in a tensioned state. Fig. 6 is a schematic view showing a state of a draw tape reactor and a draw tape when a second end of the draw tape of an airbag according to an embodiment of the present application is fixed to an outer wall of the airbag and the draw tape reactor is in a released state. As shown, the airbag includes an airbag body 10 and a tether reactor 40.

The airbag body 10 is a bag-like structure surrounded by an airbag wall, which is generally made of nylon or polyester fiber fabric, etc., and has high strength and durability, and can withstand impact force generated during collision. After the inner cavity of the air bag body 10 is inflated, the air bag body 10 can expand under the action of air pressure to form a buffer structure for lifting a human body.

As shown in fig. 1 and 2, the air bag body 10 is provided with an air inlet, and the air generated by the air generator 50 which is responsible for generating and outputting air can extend into the inner cavity of the air bag body 10 from the air inlet, and the air generator 50 can also be directly arranged in the inner cavity of the air bag body 10. When the gas generator 50 generates and outputs gas, the gas enters the inner cavity of the airbag body 10 to be inflated.

As shown in fig. 3 and 4, the airbag body 10 is provided with a first vent 11 on an airbag wall, a first baffle 21 and a second baffle 22 on an outer surface of the airbag body 10 at the first vent 11, a first side of the first baffle 21 being fixed to the first side of the first vent 11, and a first side of the second baffle 22 being fixed to the second side of the first vent 11.

The first gas release port 11 is an outlet for releasing gas in the inner cavity of the airbag body 10, and may be a gas release slit directly formed on the inner wall of the airbag body 10, or a preset hole having a preset shape such as a circle or a diamond.

The first barrier 21 and the second barrier 22 are cut piece structures for covering the first leakage port 11. The first and second blocking pieces 21 and 22 are provided on the outer surface of the airbag body 10, i.e., the outer wall of the airbag body 10. The first side of the first flap 21 is fixed to the first side of the first bleed port 11 and the first side of the second flap 22 is fixed to the second side of the first bleed port 11. Wherein the first side and the second side of the first venting port 11 are different positions around the first venting port 11, preferably they are distributed on opposite sides of the first venting port 11 such that the first blocking piece 21 and the second blocking piece 22 are disposed 180 degrees opposite each other. Of course, the first side and the second side of the first air release opening 11 may be disposed in other relative orientations, such as, for example, disposed at 90 degrees, 135 degrees, etc., which are not limited herein.

The second side of the first baffle plate 21 and the second side of the second baffle plate 22 are connected with a drawstring 30, the drawstring 30 extends into the inner cavity of the airbag body 10 from the first venting port 11, and the first end of the drawstring 30 is connected with a drawstring reactor 40. The second side of the first baffle 21 is the opposite side of the first baffle 21 in the longitudinal direction, but is not necessarily located at the other end of the first baffle 21, and may be located relatively close to the end, and the second side of the second baffle 22 has a similar meaning.

The pull strap 30 is a flexible pull cord for applying tension to the first flap 21 and the second flap 22. The first end of the pull tape 30 is connected to the pull tape reactor 40 such that the pulling force of the pull tape 30 on the first and second flaps 21 and 22 comes from the inner cavity of the airbag body 10, i.e., pulls the first and second flaps 21 and 22 from the inner cavity of the airbag body 10, thereby forcing the first and second flaps 21 and 22 to cover the closing effect of the first venting port 11. When the air leakage is needed, the forced coverage of the first baffle plate 21 and the second baffle plate 22 on the first air leakage opening 11 can be relieved only by loosening the pull belt 30, so that the first baffle plate 21 and the second baffle plate 22 can be automatically blown open under the air pressure impact, the structure is simple, and the smoothness of the switching process from closing to opening of the first air leakage opening 11 can be ensured.

In this embodiment, the second end of the pull strap 30 is fixedly connected with respect to the first venting port 11, and the length of the pull strap 30 pulls the first barrier 21 and the second barrier 22 to cover the first venting port 11 just after the airbag body 10 is inflated.

There are many specific ways in which the second side of the first flap 21 and the second side of the second flap 22 are connected to the pull strap 30. One possible embodiment is shown in fig. 3, 5 and 6, the second side of the first shutter piece 21 is provided with a first draw tape hole 211, the second side of the second shutter piece 22 is provided with a second draw tape hole 221, the draw tape 30 passes through the first draw tape hole 211 and the second draw tape hole 221, and the first shutter piece 21 can be drawn through the first draw tape hole 211, and the second shutter piece 22 can be drawn through the second draw tape hole 221. Wherein, the first draw strap hole 211 arranged on the second side of the first baffle plate 21 and the second draw strap hole 221 arranged on the second side of the second baffle plate 22 are through holes for penetrating the draw strap 30, and the draw strap 30 penetrates through the first draw strap hole 211 and the second draw strap hole 221 and stretches into the inner cavity of the air bag body 10 from the first air leakage port 11 so as to pull the first baffle plate 21 and the second baffle plate 22.

There are also many fixed positions of the second end of the draw tape 30 that is not connected to the draw tape reactor 40. For example, as shown in fig. 5 and 6, the second end of the pull tape 30, which is not connected to the pull tape reactor 40, may be fixed to the outer wall of the airbag body 10, or the second end of the pull tape 30, which is not connected to the pull tape reactor 40, may be fixed to the inner wall of the inner cavity of the airbag body 10.

When the fixing manner of the draw tape 30 is different, the manner in which the draw tape 30 is threaded through the first draw tape hole 211 and the second draw tape hole 221 is also different. For example, when the second end of the pull strap 30 is fixed to the outer wall of the airbag body 10, the first end of the pull strap 30 may pass through the first pull strap hole 211 and then through the second pull strap hole 221, so that the first barrier 21 and the second barrier 22 overlap, the first barrier 21 is located on the outside, and the second barrier 22 is located on the inside closer to the first vent 11. Alternatively, the first end of the pull tape 30 may pass through the second pull tape hole 221 and then pass through the first pull tape hole 211, so that when the first baffle 21 and the second baffle 22 overlap, the second baffle 22 is located at the outer side, and the first baffle 21 is located at the inner side closer to the first venting port 11. After passing through the first and second draw strap holes 211 and 221, the draw strap 30 is fixed to the outer wall of the airbag body 10 at the end portion (i.e., the second end) of the passing portion, which may be implemented by a connection method such as sewing, without limitation.

When the second end of the pull tape 30 is fixed on the inner wall of the inner cavity of the airbag body 10, the first end of the pull tape 30 firstly penetrates through the first air leakage opening 11, then penetrates through the first pull tape hole 211 and the second pull tape hole 221 of the first pair, then penetrates back through the first air leakage opening 11 from the second pull tape hole 221 and the first pull tape hole 211 of the second pair which are additionally arranged, then stretches into the inner cavity of the airbag body 10 to be connected on the inner wall of the airbag body 10, and the mode of being particularly connected on the inner wall of the airbag body 10 can be sewing, or alternatively, the first end of the pull tape 30 can be not positioned on the inner wall of the airbag body 10 any more, but the second end of the penetrated pull tape 30 can be directly led to the pull tape reactor 40 to be fixed, if the mode is adopted, a shearing structure is adopted between the pull tape 30 and the pull tape reactor 40 to realize release of the pull tape 30, and the release of the pull tape 30 is particularly described later. In the above embodiment, when the first flap 21 and the second flap 22 are overlapped, the positional relationship between the inner and outer sides is not limited.

In addition, the second end of the pull strap 30 may be fixedly connected to the first flap 21 or the second flap 22, in addition to the outer wall and the inner wall of the airbag body 10, and the positional relationship between the inner side and the outer side when the first flap 21 and the second flap 22 overlap is not limited. Further, when the draw tape 30 is fixedly coupled to the first flap 21, the first draw tape hole 211 may be provided or the first draw tape hole 211 may not be provided. When the pull tape 30 is fixedly coupled to the second flap 22, either the second pull tape hole 221 or the second pull tape hole 221 may not be provided.

Fig. 7 is a schematic view showing a state in which a second end of a pull strap of an airbag according to an embodiment of the present application is fixed to a first flap and a pull strap reactor is in a tensioned state. Fig. 8 is a schematic view showing a state of a draw-strap reactor and a draw-strap when a second end of the draw-strap of an airbag according to an embodiment of the present application is fixed to a first baffle and the draw-strap reactor is in a released state. Wherein a second end of the pull strap 30 opposite to the first end is fixed to the first baffle plate 21, and the pull strap 30 extends from the second end through a second pull strap hole 221 on a second side of the second baffle plate 22 and then extends into the inner cavity of the airbag body 10 from the first venting port 11.

Or, as shown in fig. 9, fig. 9 is a schematic view of the second end of the pull strap of the airbag according to the embodiment of the present application, which is fixed to the second baffle plate, and the second end of the pull strap 30 opposite to the first end is fixed to the second baffle plate 22 when the pull strap reactor is in the released state, and the pull strap 30 extends from the second end through the first pull strap hole 211 on the second side of the first baffle plate 21 and then extends into the inner cavity of the airbag body 10 from the first venting port 11. In the above-described embodiment, the fastening means between the pull strap 30 and the first flap 21 or the second flap 22 may be a sewing means or the like.

When the pull strap 30 passes through the pull strap hole to pull the baffle, the unfolding effect of the baffle is affected by gravity, so that the effect of covering the air leakage hole by the baffle is affected. Thus, in the preferred embodiment, if the first flap 21 and the second flap 22 are arranged up and down in the direction of gravity, the second end of the pull strap 30 is preferably fixed to the flap located below. For example, as shown in fig. 9, when the first flap 21 is positioned above the second flap 22 in the gravitational direction, the second end of the pull strap 30 is preferably fixed to the second flap 22. This causes the draw tape 30 to pass through the first draw tape hole 211 from the bottom up and then extend from the first venting port 11 into the interior cavity of the airbag body 10. For the first baffle 21 and the second baffle 22, the pulling force from the pull strap 30 received by the first baffle 21 can fully overcome the action of gravity to enable the first baffle 21 to have enough force to be fully unfolded, and the second pull strap hole 221 of the second baffle 22 is pulled by the pull strap 22, so that the second baffle 22 can also be fully unfolded under the action of the pulling force and the gravity, and the first baffle 21 and the second baffle 22 can be ensured to better cover the first air leakage port 11.

The number of the first and second strap holes 211 and 221 may be one or more, and the first and second blocking pieces 21 and 22 may cover the first ventilation opening 11 after the drawn strap 30 is pulled. Also, the pull tape 30 may be provided in one or more pieces, which is not limited thereto.

One possible embodiment is shown in fig. 5, 6, 7 and 8, in which the first draw tape hole 211 and the second draw tape hole 221 may be provided in two. When the first and second draw tape holes 211 and 221 are simultaneously provided, as shown in fig. 5 and 6, two pairs of first and second draw tape holes 211 and 221 corresponding to each other, that is, the first and second pairs of first and second draw tape holes 211 and 221 and the second pair of first and second draw tape holes 211 and 221, are formed by corresponding positional relationships, and the draw tape reactor 40 is in a tensioned state, and when the first and second barrier sheets 21 and 22 are partially overlapped, the first and second draw tape holes 211 and 221 corresponding to each other are overlapped with each other.

That is, two pairs of drawstring holes may be provided at the second end of the first barrier 21 and the second end of the second barrier 22, and the two pairs of drawstring holes may be respectively penetrated through by the drawstring 30, so that the first barrier 21 and the second barrier 22 may be simultaneously subjected to two tensile forces, thereby ensuring that the first barrier 21 and the second barrier 22 are overlapped and combined more tightly, and further ensuring the covering effect of the first barrier 21 and the second barrier 22 on the first venting port 11.

Wherein, when the draw tape 30 is arranged as one strip, different threading of the first draw tape hole 211 and the second draw tape hole 221 can be realized by different sections of the draw tape 30.

One embodiment may be that the draw tape 30 includes a first section of draw tape that passes through one pair of first and second draw tape holes 211, 221 and a second section of draw tape that passes through the other pair of first and second draw tape holes 211, 221.

In another embodiment, the pull strap 30 includes a first pull strap, a second pull strap and a third pull strap, wherein the first pull strap passes through the first pull strap hole 211 and the second pull strap hole 221 of the first pair, the second pull strap passes through the first pull strap hole 211 and the second pull strap hole 221 of the second pair, and the third pull strap is disposed in the inner cavity of the airbag body 10, one end of the third pull strap is connected with the first pull strap and the second pull strap, respectively, and the other end of the third pull strap serves as a first end of the pull strap 30 connected with the pull strap reactor 40.

The draw tape reactor 40 is a device for tightening or loosening the draw tape 30, and has a tightening state and a releasing state, which can be switched by electric control. The pulled state refers to a state in which the pull belt reactor 40 pulls the pull belt 30 so as to pull the first barrier 21 and the second barrier 22 to cover the first gas leakage port 11, and the released state refers to a state in which the pull belt reactor 40 releases the pull belt 30 so that the first barrier 21 and the second barrier 22 can be blown open.

The pull strap reactor 40 may be used in conjunction with a detection device to control the pull strap reactor 40 to a released state when the detection device detects that the passenger is light or out of position, and to control the pull strap reactor 40 to a tensioned state when the detection device detects that the passenger is normal in weight or in position.

The detection means may comprise a sensor, a sitting position recognition system or the like. When the detection device comprises a sensor, the sensor can determine that the weight of the passenger is lighter when the weight of the passenger is detected to be smaller than a preset value, and determine that the weight of the passenger is normal when the weight of the passenger is detected to be not smaller than the preset value. When the detection device comprises a sitting posture recognition system, the sitting posture recognition system can determine that the passenger is sitting posture normal when detecting that the passenger is located in the preset sitting posture area, and determine that the passenger is out of sitting posture when detecting that the passenger is located outside the preset sitting posture area. Of course, the determination method of the weight and sitting posture of the passenger may be any other possible method, and is not limited herein.

When the detecting device detects that the weight or sitting posture of the passenger is normal, the pull-strap reactor 40 is in a tensioned state, and the pull strap 30 is pulled, so that the first baffle 21 and the second baffle 22 are partially overlapped and cover the first venting port 11 under the action of the pull strap 30. When the detection device detects that the passenger is lighter or not in a sitting posture and the stretching strap reactor 40 is in a released state, the stretching strap reactor 40 releases the stretching strap 30, so that the first baffle piece 21 and the second baffle piece 22 which cover the first air leakage port 11 can be blown open under the air pressure impact of the inner cavity of the air bag body 10. When the first baffle 21 and the second baffle 22 are blown open, the first baffle 21 and the second baffle 22 are separated from each other under the impact of gas, and the first draw strap hole 211 and the second draw strap hole 221 drawn together by the draw strap 30 are also separated from each other, so that the process of releasing the draw strap 30 is realized, and the first gas leakage port 11 is exposed.

In the specific embodiment, the pull-strap reactor 40 may be installed in a plurality of positions, and may be installed together with the gas generator, or may be installed in other positions, so long as the pull-strap 30 is pulled from the inner cavity of the airbag body 10 to the first blocking piece 21 and the second blocking piece 22.

There are also many mechanism arrangements of the pull tape reactor 40, and one possible mechanism arrangement is shown in fig. 5 and 6, in which a rotatable winding mechanism 41 is provided on the pull tape reactor 40, the first end of the pull tape 30 is wound around the winding mechanism 41, and when the pull tape reactor 40 is in a tensioned state, the winding mechanism 41 is locked so as not to be rotatable, and when the pull tape reactor 40 is in a released state, the winding mechanism 41 is unlocked so as to be rotatable.

Such a ribbon reactor 40 may be implemented in various manners provided in the prior art, for example, by using an electromagnetic brake pad, which is braked by the electromagnetic coil when the ribbon reactor 40 is in a tensioned state, the winding mechanism 41 cannot rotate due to the action of the brake pad, and is released due to the loss of electricity when the ribbon reactor 40 is in a released state, and the winding mechanism 41 can freely rotate due to the brake pad being disabled.

In the pull tape reactor 40 of this mechanism, the winding mechanism 41 may be a rotatable cylindrical structure. When the pull string reactor 40 is in a tensioned state, the winding mechanism 41 is caught, and a part of the pull string 30 is wound around the winding mechanism 41, so that the pull string 30 maintains the force on the first flap 21 and the second flap 22, thereby allowing the first flap 21 and the second flap 22 to always overlap and cover the first gas leakage port 11. When the pull-string reaction vessel 40 is switched from the tensioned state to the released state, the winding mechanism 41 becomes a rotatable state, and the portion of the pull-string 30 wound around the winding mechanism 41 can be pulled away, enabling the pull-string 30 to be pulled out from the first venting port 11, thereby freeing the first flap 21 and the second flap 22 from the restriction of the pull-string 30, enabling the first flap 21 and the second flap 22 to be blown open under an air pressure impact.

In another possible arrangement, the pull-strap reactor 40 is provided with a shearing mechanism, the first end of the pull-strap 30 is fixedly connected to the pull-strap reactor 40 via the shearing mechanism, the shearing mechanism does not perform a shearing action when the pull-strap reactor 40 is in a tensioned state, and the shearing mechanism performs a shearing action when the pull-strap reactor 40 is in a released state, and the pull-strap 30 is sheared at a position near the first end of the pull-strap 30, so that the pull-strap 30 is released.

In the pull-strap reactor 40 of this kind of mechanism, when the pull-strap 30 is in a taut state, the pull-strap 30 is fixedly connected to the pull-strap reactor 40 to always provide tension to the first barrier 21 and the second barrier 22, so that the first barrier 21 and the second barrier 22 always overlap and cover the first venting port 11. When the pull strap 30 is switched from the tensioned state to the released state, the pull strap 30 is sheared by the shearing mechanism, and the first barrier 21 and the second barrier 22 are no longer restricted by the pull strap 30, so that the first barrier 21 and the second barrier 22 can be blown open under the inflation of air pressure. The above-mentioned cutting structure may be variously employed, for example, the pull tape 30 passes through a cutting opening, one end of the cutting opening is provided on a telescopic rod which is telescopic, when the telescopic rod is retracted by electromagnetic force, the cutting edges opposite to the cutting opening are contracted and overlapped, and the pull tape 30 passing through the cutting opening is cut short, so that the cutting action is performed.

In addition, in the present embodiment, in addition to the first air release port 11, more air release ports such as the second air release port and the third air release port may be provided for air release, so as to enhance the air release effect. The second venting port is further described below as an example.

The specific implementation mode of arranging the second air leakage opening can be that the air bag wall of the air bag body 10 is also provided with the second air leakage opening, the outer surface of the air bag body 10 is provided with a third baffle plate and a fourth baffle plate which are positioned at the second air leakage opening, the first side of the third baffle plate is fixed on the first side of the second air leakage opening, the first side of the third baffle plate is fixed on the second side of the second air leakage opening, the second side of the third baffle plate and the second side of the fourth baffle plate are both connected with another drawstring, the drawstring extends into the inner cavity of the air bag body 10 from the second air leakage opening, and the first end of the drawstring is connected with the drawstring reactor 40.

In this embodiment, the second venting port is similar to the first venting port 11, and may be similar to the first venting port 11, and redundant description is omitted herein. The second gas release port may be identical in size, shape, etc. to the first gas release port 11, or may be different from the first gas release port 11. The arrangement of the pull strap at the second venting port can be similar to the arrangement of the pull strap 30, and redundant description is omitted herein.

In the airbag provided in the above embodiment, the first venting port 11 is provided on the airbag wall of the airbag body 10, the first blocking piece 21 and the second blocking piece 22 which can be partially overlapped are provided on the outer surface of the airbag body 10, and are controlled by the pull belt 30. When the airbag body 10 is inflated, the passenger can be detected through the detection device, if the weight of the passenger is smaller or the sitting posture is not correct, the pulling belt reactor is controlled to loosen the pulling belt, and the first baffle piece 21 and the second baffle piece 22 can release the coverage of the first venting port 11, so that the gas can be vented from the first venting port 11, the air pressure of the inner cavity of the airbag body 10 is reduced, the impact on the passenger when the airbag body 10 is unfolded is slowed down, and the injury to the passenger with smaller weight or the incorrect sitting posture when the airbag is unfolded is avoided. The air bag wall can not squeeze the human body, so that the long-term shielding of the air bag wall to the mouth and nose of the human body is avoided, the respiration of passengers is not blocked, and the protection effect of the air bag is improved. Meanwhile, since the pull belt 30 directly extends into the inner cavity of the airbag from the air leakage opening, when the first baffle plate 21 and the second baffle plate 22 are pulled by the pull belt 30 to cover the first air leakage opening 11, the air in the airbag body 10 can not escape basically, so that the inflation efficiency of the airbag is ensured, and meanwhile, the injury to passengers with smaller weight or improper sitting posture when the airbag is unfolded is avoided.

It should be noted that the positions of the air vents are reasonable no matter how many air vents are arranged, and specifically, the air vents should be prevented from being arranged at positions pressed by passengers when the safety airbag works, so that the air vents are prevented from being blocked by the bodies of the passengers.

The first embodiment above has been described with respect to an airbag, and the following second embodiment provides an automobile incorporating the airbag according to any one of the first embodiments, specifically as follows.

The embodiment provides an automobile, and an airbag of the automobile comprises an airbag body and a drawstring reactor;

The air bag comprises an air bag body, a first air leakage port, a first baffle plate and a second baffle plate, wherein the air bag wall of the air bag body is provided with the first air leakage port;

The second side of the first baffle plate is provided with a first drawstring hole, and the second side of the second baffle plate is provided with a second drawstring hole, the drawstring passes through the first drawstring hole and the second drawstring hole, can pass through the first baffle plate of the first drawstring Kong Laye and the second baffle plate of the second drawstring Kong Laye, and extends into the inner cavity of the air bag body from the first air leakage port, and the first end of the drawstring is connected to the drawstring reactor;

When the pull belt reactor is in a tensioning state, the pull belt is pulled, so that the first baffle plate and the second baffle plate are partially overlapped under the action of the pull belt and cover the first air leakage port, and when the pull belt reactor is in a releasing state, the pull belt reactor releases the pull belt, so that the first baffle plate and the second baffle plate which cover the first air leakage port can be blown open under the air pressure impact of the inner cavity of the air bag body.

The specific implementation of the airbag in this embodiment is similar to that of the airbag in the first embodiment, and details of the airbag in the first embodiment are described in the foregoing, which are not repeated herein.

It should be noted that although several structures, components or units for implementing the relevant functions are mentioned in the above detailed description, this division is not mandatory. Indeed, the features and functions of two or more structures, components, or units described above may be embodied in one structure, component, or unit, in accordance with the embodiments of the present application. Conversely, the features and functions of one structure, component, or unit described above can be further divided into ones that are embodied by a plurality of components, structures, or units.

Furthermore, although the various components and inter-component mounting of the assemblies or devices of the present application are depicted in the drawings in a particular order, this is not a requirement or suggestion that the assemblies or devices must be designed in accordance with the particular components or inter-component mounting or that all illustrated components be included in order to achieve the desired results. Additionally or alternatively, certain components may be omitted, multiple components combined into one component to achieve a corresponding function, and/or one component decomposed into multiple components to achieve a corresponding function, etc.

While the application has been described in terms of preferred embodiments, it is not intended to be limiting, but rather, it will be apparent to those skilled in the art that various changes and modifications can be made herein without departing from the spirit and scope of the application as defined by the appended claims.

Claims (10)

1. An airbag is characterized by comprising an airbag body and a drawstring reactor;

A first air leakage port is arranged on the air bag wall of the air bag body;

The air bag comprises an air bag body, wherein the outer surface of the air bag body is provided with a first baffle plate and a second baffle plate which are positioned at the first air leakage port;

The second side of the first baffle plate and the second side of the second baffle plate are connected with a pull belt, the pull belt stretches into the inner cavity of the air bag body from the first air leakage port, and the first end of the pull belt is connected to the pull belt reactor;

When the pull belt reactor is in a tensioning state, the pull belt is pulled, so that the first baffle plate and the second baffle plate are partially overlapped under the action of the pull belt and cover the first air leakage opening, and when the pull belt reactor is in a releasing state, the pull belt reactor releases the pull belt, so that the first baffle plate and the second baffle plate which cover the first air leakage opening can be blown open under the air pressure impact of the inner cavity of the air bag body.

2. The airbag of claim 1 wherein the second end of the tether not connected to the tether reactor is secured to an outer wall of the airbag body;

Or the second end of the drawstring which is not connected with the drawstring reactor is fixed on the inner wall of the inner cavity of the air bag body.

3. The airbag of claim 1 wherein a second end of said pull strap opposite said first end is secured to said first flap, said pull strap extending from said second end through a second pull strap aperture in a second side of said second flap and into said airbag body cavity from said first vent;

Or, a second end of the pull belt opposite to the first end is fixed on the second baffle plate, and the pull belt penetrates through a first pull belt hole on the second side of the first baffle plate from the second end and then stretches into the inner cavity of the air bag body from the first air leakage port.

4. The airbag of claim 1 wherein the second side of the first flap is provided with a first draw strap aperture and the second side of the second flap is provided with a second draw strap aperture, and wherein a draw strap is passed through the first and second draw strap apertures and through the first flap by the first draw strap Kong Laye and through the second flap by the second draw strap Kong Laye.

5. The airbag according to claim 4, wherein the first draw strap hole and the second draw strap hole are provided in two, and two pairs of first draw strap hole and second draw strap hole corresponding to each other are formed by corresponding positional relationship;

The drawstring reactor is in a tensioning state, and when the first baffle piece and the second baffle piece are partially overlapped, the first drawstring hole and the second drawstring hole which are mutually corresponding are mutually overlapped.

6. The airbag of claim 5 wherein the tether comprises a first length of tether and a second length of tether, the first length of tether passing through one pair of first and second tether apertures and the second length of tether passing through the other pair of first and second tether apertures.

7. The airbag of claim 6 wherein said tether further comprises a third length of tether disposed within said airbag body and having one end connected to said first and second lengths of tether respectively and another end serving as a first end of said tether connected to said tether reactor.

8. The airbag of claim 1, wherein the airbag body further comprises a second vent port provided in an airbag wall;

the air bag comprises an air bag body, wherein the outer surface of the air bag body is provided with a third baffle plate and a fourth baffle plate which are positioned at the second air leakage port, the first side of the third baffle plate is fixed on the first side of the second air leakage port, and the first side of the third baffle plate is fixed on the second side of the second air leakage port;

The second side of the third baffle plate and the second side of the fourth baffle plate are connected with another drawstring, the drawstring stretches into the inner cavity of the air bag body from the second air leakage port, and the first end of the drawstring is connected to the drawstring reactor.

9. The airbag according to claim 1, wherein the pull-strap reactor is provided with a rotatable winding mechanism, the first end of the pull-strap is wound around the winding mechanism, the winding mechanism is locked against rotation when the pull-strap reactor is in a tensioned state, and the winding mechanism is unlocked for rotation when the pull-strap reactor is in a released state.

10. An automobile comprising an airbag according to any one of claims 1 to 9.