CN213056986U - Air curtain air bag - Google Patents

Abstract

The utility model discloses an air curtain air bag, which comprises an air bag body and an air duct, wherein the air bag body is provided with a front row cavity and a rear row cavity which are mutually communicated through the air duct; the front row chamber comprises a main chamber and an additional chamber which are communicated with each other, the main chamber and the additional chamber are used for protecting the head of a front row passenger, the rear row chamber is used for protecting the head of a rear row passenger, and one side of the main chamber, which is far away from the additional chamber, is provided with an extended air cavity extending upwards. Based on the structure, the front row cavity and the rear row cavity are communicated with each other through the air duct, so that the front row cavity and the rear row cavity can be inflated simultaneously; the front row chamber comprises a main chamber and an additional chamber, and the main chamber and the rear row chamber respectively correspond to the heads of the front and rear passengers, so the air curtain air bag can simultaneously realize the buffer protection of the heads of the front and rear passengers after inflation and expansion, and the additional chamber can further buffer and protect the front passenger when the front passenger leans forward under the inertia effect, therefore, the air curtain air bag can generate better protection effect on the front passenger.

Description

Air curtain air bag

Technical Field

The utility model relates to the technical field of automobiles, especially, relate to an air curtain air pocket.

Background

The working principle of the automobile safety air bag is as follows: when the automobile runs, the sensor system continuously sends speed change information to the control device, the control device analyzes and judges the information, if the measured acceleration, speed change or other indexes exceed a preset value, the collision really occurs, the control device sends an ignition command to the gas generator or the sensor directly controls ignition, after ignition, an explosion reaction occurs, gas is generated or compressed gas in the gas storage tank is released to fill the collision gas bag, and when a passenger contacts with the gas bag, the gas bag is compressed to absorb collision energy, so that the purpose of protecting the passenger is achieved. The existing automobile safety airbag still has the problem of poor protection effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air curtain air bag that can protect front and back row passenger's head better.

In order to achieve the above object, the utility model provides a pair of gas curtain air bag, including the air bag body and air duct, the air bag body has front-seat cavity and back-seat cavity, and the two passes through the air duct communicates each other, the front-seat cavity is including the main cavity chamber and the additional cavity of intercommunication each other, and the two all is used for protecting front-seat passenger's head, the back-seat cavity is used for protecting back-seat passenger's head, wherein, the main cavity chamber is kept away from one side of additional cavity has the extension air cavity that upwards extends.

In some embodiments of the present application, the air duct is located the front row cavity with between the back row cavity and have air inlet, front exhaust gas outlet and the back discharge port that communicate each other, the air inlet is located the air pocket is external, front exhaust gas outlet with the front row cavity is linked together, the back discharge gas outlet with the back row cavity is linked together.

In some embodiments of the present application, the air inlet is directed obliquely upward from the side of the back row of chambers.

In some embodiments of the present application, the thickness of the primary chamber corresponding to the location of the center of mass of the head is greater than 180 mm.

In some embodiments of the present application, the back row of chambers has a thickness greater than 150mm at a location corresponding to a center of mass of the head.

In some embodiments of the present application, the air bag body has a plurality of first drainage holes in communication with the back row chamber, the plurality of first drainage holes are located above the back row chamber corresponding to the head centroid position and are spaced apart laterally.

In some embodiments of the present application, the airbag body has a plurality of second drainage holes in communication with the additional chamber, the plurality of second drainage holes being vertically spaced apart.

In some embodiments of the present application, the upper and lower ends of the additional chamber close to one side of the main chamber are respectively provided with a protrusion, and the plurality of second drainage holes are vertically arranged between the two protrusions.

In some embodiments of the present application, the gas bag body is provided with a recessed portion, and the recessed portion is disposed between the front row chamber and the rear row chamber.

In some embodiments of the present application, the side of the main chamber adjacent the additional chamber has an arcuate projection and the side of the additional chamber adjacent the main chamber has an internal recess that mates with the projection.

The utility model provides an air curtain air pocket compares with prior art, and its beneficial effect lies in:

because the front row cavity and the rear row cavity are communicated with each other through the air duct, the front row cavity and the rear row cavity can be inflated simultaneously; the front row chamber comprises a main chamber and an additional chamber, and the main chamber and the rear row chamber respectively correspond to the heads of the front and rear passengers, so the air curtain air bag can simultaneously realize the buffer protection of the heads of the front and rear passengers after inflation and expansion, and the additional chamber can further buffer and protect the front passenger when the front passenger leans forward under the inertia effect, therefore, the air curtain air bag can generate better protection effect on the front passenger.

Drawings

Fig. 1 is a schematic structural view of the air curtain bag of the present invention.

The air bag comprises an air bag body 1, an air duct 2, an air inlet 21, an air outlet 22, a front air outlet 23, a rear air outlet 3, a front row of chambers 31, a main chamber 311, an extending air chamber 312, a convex part 32, an additional chamber 321, a convex part 322, an inner concave part 4, a rear row of chambers 5, a concave part 6, a pull belt 7, a hook 8, a first drainage hole and a second drainage hole 9.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1, an embodiment of the present invention provides an air curtain airbag, which includes an airbag body 1 and an air duct 2, wherein the airbag body 1 has a front row chamber 3 and a rear row chamber 4, which are communicated with each other through the air duct 2; the front chamber 3 includes a main chamber 31 and an additional chamber 32 communicating with each other, both for protecting the head of a front passenger, and the rear chamber 4 for protecting the head of a rear passenger, wherein a side of the main chamber 31 remote from the additional chamber 32 has an extended air chamber 311 extending upward.

Based on the structure, the front-row chamber 3 and the rear-row chamber 4 are communicated with each other through the air duct 2, so that the two chambers can be inflated simultaneously; the front row chamber 3 includes the main chamber 31 and the additional chamber 32, and the main chamber 31 and the rear row chamber 4 correspond to the heads of the front and rear occupants, respectively, so that the air curtain bag can simultaneously cushion and protect the heads of the front and rear occupants after inflation and deployment, and the additional chamber 32 can further cushion and protect the front occupant when the front occupant leans forward by inertia, so that the air curtain bag can provide a better protection effect for the front occupant.

Referring to fig. 1, in the present embodiment, the gas guiding tube 2 is disposed between the front row chamber 3 and the rear row chamber 4 and has a gas inlet 21, a front gas outlet 22 and a rear gas outlet 23 which are communicated with each other, the gas inlet 21 is located outside the gas bag, the front gas outlet 22 is communicated with the front row chamber 3, and the rear gas outlet 23 is communicated with the rear row chamber 4. Thus, the gas is input through the gas inlet 21 and output through the front exhaust outlet 22 and the rear exhaust outlet 23, so that the front row chamber 3 and the rear row chamber 4 can be simultaneously inflated, and the inflation efficiency is high. Preferably, the intake port 21 is directed obliquely upward from the side of the rear chamber 3 to improve the smoothness of the airflow during inflation.

Referring to fig. 1, in the present embodiment, the thickness of the main chamber 31 corresponding to the center of mass of the head is greater than 180 mm; the rear row of chambers 4 has a thickness greater than 150mm at the position corresponding to the centre of mass of the head. Based on this, the air curtain air bag can not be unfolded due to too low thickness of the cavity, so that the air curtain air bag can not float inwards or outwards, and can meet the requirements of C-NCAP test at 32km/h and 75 ℃.

Referring to fig. 1, in the present embodiment, the air bag body 1 has two first drainage holes 8 communicated with the back row chamber 4, and the two first drainage holes 8 are disposed above the position of the back row chamber 4 corresponding to the center of mass of the head and arranged at intervals along the transverse direction. Besides, the air bag body 1 is also provided with two second drainage holes 9 communicated with the additional chamber 32, and the two second drainage holes 9 are vertically arranged at intervals.

Referring to fig. 1, in the present embodiment, the additional chamber 32 has protrusions 321 at upper and lower ends of a side thereof close to the main chamber 31, and the two second drainage holes 9 are vertically arranged between the two protrusions 321.

It should be understood that the number of first and second drainage apertures 8, 9 is not limited to two, and in other embodiments, more than two may be provided.

Referring to fig. 1, in the present embodiment, the airbag body 1 is provided with a recessed portion 5, and the recessed portion 5 is disposed between the front row chamber 3 and the rear row chamber 4 and corresponds to a B-pillar of the vehicle body. Based on the structure, the air curtain air bag can avoid a vehicle body B column with serious deformation through the concave part 5 in the inflating and unfolding process so as to realize smooth inflating and unfolding and avoid protection failure; meanwhile, the concave part 5 can further shorten the time required by the inflation and the unfolding of the air curtain air bag, and the inflation efficiency is improved.

Referring to fig. 1, in the present embodiment, a drawstring 6 for connecting to a vehicle body is further disposed at an end of the air bag body 1 close to the front row chamber 3, and the drawstring 6 not only can reduce the sway of the air curtain air bag when the air curtain air bag is inflated and deployed, but also can prevent the air curtain air bag from flying out of the window when the vehicle is in frontal collision.

Referring to fig. 1, in the present embodiment, one side of the main chamber 31 close to the additional chamber 32 is provided with an arc-shaped protruding portion 312, one side of the additional chamber 32 close to the main chamber 31 is provided with an inner concave portion 322, and the inner concave portion 322 is matched with the protruding portion 312, so that the main chamber 31 and the additional chamber 32 can be better in buffering fit under collision inertia, and the influence of deformation caused by inertia extrusion due to irregularity of a fitting surface on a protection effect is avoided.

Referring to fig. 1, in this embodiment, the inflatable curtain air bag of the present invention further includes a plurality of hooks 7 disposed at the top of the air bag body 1, and the hooks 7 are used for hooking on the vehicle body to improve the stability of the inflatable curtain air bag and avoid the deviation after collision.

To sum up, the utility model provides an air curtain air bag, it includes the air bag body 1 and air duct 2, and the air bag body 1 has front row cavity 3 and back row cavity 4, and the two communicates each other through air duct 2, and front row cavity 3 is including communicating main cavity 31 and additional cavity 32 each other. Compared with the prior art, the air curtain air bag has good protection effect and can better protect the heads of passengers in front and rear rows.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (10)

1. An inflatable curtain air bag, comprising an air bag body and an air duct, wherein the air bag body is provided with a front row chamber and a rear row chamber which are communicated with each other through the air duct, the front row chamber comprises a main chamber and an additional chamber which are communicated with each other, the main chamber and the additional chamber are both used for protecting the head of a front row passenger, the rear row chamber is used for protecting the head of a rear row passenger, and one side of the main chamber, which is far away from the additional chamber, is provided with an extending air cavity which extends upwards.

2. The inflatable curtain airbag of claim 1, wherein said gas duct is disposed between said front and rear chambers and has an inlet port, a front outlet port, and a rear outlet port in communication with each other, said inlet port being disposed outside said airbag body, said front outlet port being in communication with said front chamber, said rear outlet port being in communication with said rear chamber.

3. The inflatable curtain airbag of claim 2 wherein said inlet port is oriented diagonally upward from the side of said rear row of chambers.

4. The inflatable bag of claim 1, wherein said primary chamber has a thickness greater than 180mm at a location corresponding to the center of mass of the head.

5. The inflatable curtain airbag of claim 1 wherein said rear row of chambers has a thickness greater than 150mm at a location corresponding to the center of mass of the head.

6. The inflatable curtain airbag of claim 1, wherein said airbag body has a plurality of first drainage apertures in communication with said rear row of chambers, said plurality of first drainage apertures being spaced laterally above the center of mass of the head of said rear row of chambers.

7. The inflatable curtain airbag of claim 6 wherein said airbag body has a second plurality of drainage apertures in communication with said additional chamber, said second plurality of drainage apertures being vertically spaced apart.

8. The inflatable curtain air bag of claim 7, wherein said additional chamber has raised portions at upper and lower ends thereof adjacent to said main chamber, and said second plurality of drainage holes are vertically aligned between said raised portions.

9. The inflatable curtain airbag of claim 1 wherein said airbag body defines a recessed portion, said recessed portion being disposed between said front row of chambers and said rear row of chambers.

10. The curtain airbag of claim 1 wherein the side of the main chamber adjacent the additional chamber has an arcuate projection and the side of the additional chamber adjacent the main chamber has an internal recess that mates with the projection.

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