JP2018043635A - Pedestrian protection airbag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a pedestrian pushed onto a hood from falling, while hindering unnecessary inflation of an airbag in the event of collision with the pedestrian.SOLUTION: In the event that a vehicle 12 collides with a pedestrian from front, the pedestrian may be pushed onto a hood 14, moved to either one of ends 15 of the hood 14 in a vehicle width direction, and made highly likely to fall from the surface of the hood 14. In such a situation, using a pedestrian behavior detection camera 34, a pedestrian protection airbag device 10 detects the side to which the pedestrian has moved and, on the basis of the result of the detection, the device can expand and inflate a side front part 28 of a pedestrian protection airbag 16 corresponding to the side to which the pedestrian has moved. Consequently, the pedestrian moved in one sideways direction of the hood 14 is received by the expanded and inflated side front part 28 and is prevented from falling from the surface of the hood 14.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pedestrian protection airbag device.

  Patent Document 1 listed below discloses a hood airbag device. In this hood airbag device, when a collision with a pedestrian is detected, the first airbag is deployed on the hood of the vehicle body, and at a peripheral portion in the first airbag after a predetermined time has elapsed since the deployment of the first airbag. By deploying the provided second airbag, the pair of peripheral edges are inflated upward in the vehicle width direction of the first airbag. Thereby, falling from the hood of the pedestrian who got on the 1st airbag at the time of a collision is controlled.

Japanese Patent Laid-Open No. 08-324380

  By the way, in general, since a pedestrian who falls on the hood at the time of a pedestrian collision falls from one end of the hood in the vehicle width direction, as in the prior art described in Patent Document 1, In a structure in which a pair of peripheral portions inflate in the vehicle width direction of one airbag, either one of the peripheral portions may cause unnecessary expansion. Therefore, the above prior art has room for improvement in this respect.

  In view of the above facts, the present invention has an object to obtain a pedestrian protection airbag device that can suppress the fall of a pedestrian riding on a hood while suppressing the deployment of an unnecessary airbag during a pedestrian collision. To do.

  The pedestrian protection airbag device according to the invention of claim 1 is provided in the hood, and has a gas generating means for injecting gas when activated, and a behavior for detecting the behavior of a collision body in front of the vehicle and on the hood. Based on the detection result of the detection means, the pressurizing means for injecting the gas in one of the vehicle width directions, and the gas generation means supplies the gas to the rear end of the hood and the front windshield glass. One of the end portions of the hood in the vehicle width direction is inflated and deployed to the rear of the vehicle so as to cover at least the front pillar and the cowl, and is provided in a pair of left and right and supplied with the gas by the pressurizing means. On the other hand, it has a pedestrian protection airbag having a side front side portion that is inflated and deployed.

  According to the first aspect of the present invention, when a frontal collision with a collision body such as a pedestrian occurs, gas is ejected by the gas generating means. The jetted gas is supplied into the pedestrian protection airbag and inflates the pedestrian protection airbag. As a result, the pedestrian protection airbag is deployed rearward from between the rear end of the hood and the front windshield glass, and is inflated and deployed so as to cover at least the front pillar and the cowl. As a result, the colliding body such as a pedestrian is received by the inflated and deployed pedestrian protection airbag, the collision energy at the time of the collision is absorbed, and the reaction force that the colliding body such as the pedestrian receives from the vehicle body can be reduced.

  Here, in the present invention, a pressurizing means for injecting gas in one of the vehicle width directions based on the detection result of the behavior detecting means for detecting the behavior of the collision object on the front of the vehicle and on the hood, and a pedestrian protection airbag A side front side portion that is provided in a pair of left and right and expands and deploys at one of the end portions in the vehicle width direction of the hood by the operation of the pressurizing means. Therefore, when a frontal collision with a collision object such as a pedestrian, the collision object gets on the hood, and the collision object is likely to move to one of the ends in the vehicle width direction of the hood and fall from the hood. In this case, the behavior detecting means can detect the side on which the collision body has moved, and based on the detection result, the side front side portion of the pedestrian protection airbag corresponding to the side on which the collision body has moved can be inflated and deployed. As a result, the collision body that moves to the left or right side of the hood is received by the side front side portion that has expanded and deployed, and the collision body can be prevented from falling from above the hood.

  The pedestrian protection airbag device according to the first aspect of the present invention has an excellent effect of being able to suppress the fall of a pedestrian riding on a hood while suppressing the deployment of an unnecessary airbag during a pedestrian collision. Have

It is a perspective view showing the appearance of the vehicle which has the pedestrian protection airbag device concerning a 1st embodiment including the state where the airbag developed. It is sectional drawing which shows the expansion | deployment state of the pedestrian protection airbag at the time of the action | operation of the pedestrian protection airbag apparatus which concerns on 1st Embodiment. It is a front view which shows the pedestrian protection airbag and hood at the time of the action | operation of the pedestrian protection airbag apparatus which concerns on 2nd Embodiment. It is a perspective view which shows the external appearance of the vehicle which has the pedestrian protection airbag apparatus which concerns on 3rd Embodiment including the state which the airbag expand | deployed. It is a top view which shows the deployment state of the pedestrian protection airbag at the time of the action | operation of the pedestrian protection airbag apparatus which concerns on 3rd Embodiment. It is a front view which shows the pedestrian protection airbag and hood at the time of the action | operation of the pedestrian protection airbag apparatus which concerns on other embodiment.

(First embodiment)
Hereinafter, 1st Embodiment of the pedestrian protection airbag apparatus which concerns on this invention is described using FIG. In these figures, the arrow FR indicates the front side in the vehicle longitudinal direction, the arrow OUT indicates the vehicle width direction outside, and the arrow UP indicates the vehicle vertical direction upper side.

  FIG. 1 is a perspective view showing the appearance of a vehicle 12 on which a pedestrian protection airbag device 10 according to this embodiment is mounted. As shown in this figure, the pedestrian protection airbag device 10 is disposed along the vehicle width direction on the rear end side of a hood 14 that opens and closes a power unit room 13 that houses a power unit (not shown). The pedestrian protection airbag device 10 includes a pedestrian protection airbag 16 and a two-stage inflator 18 as a pressurizing unit that also serves as a gas generating unit.

  The pedestrian protection airbag 16 is disposed between a hood outer panel and a hood inner panel (both not shown) in the hood 14, and receives gas supply from the two-stage inflator 18 from the rear end of the hood 14. The hood 14 is configured to expand and deploy outside. As an example, the pedestrian protection airbag 16 is formed into a bag shape by sewing the outer peripheral portions of two base fabrics, and is a hood in a state of being folded by a predetermined folding method such as bellows folding or roll folding. 14 is housed in a module case (not shown) provided on the back side.

  FIG. 2 shows a cross-sectional view of the pedestrian protection airbag 16 in the deployed state as viewed from above the vehicle in a state where the pedestrian protection airbag 16 is cut along the vehicle longitudinal direction. As shown in this figure, the pedestrian protection airbag 16 includes a main body portion 20 that is flattened along the vehicle width direction, a pair of left and right side portions 22 provided on both sides of the main body portion 20, and It is constituted by. The main body 20 is provided with a partition wall 24 in the center of the vehicle width direction, and the main body 20 and thus the pedestrian protection airbag 16 is divided into left and right by the partition wall 24.

  A pair of left and right side portions 22 of the pedestrian protection airbag 16 includes a pillar deployment portion 26 that extends from the main body portion 20 toward the vehicle rear side, and a side front side portion 28 that extends from the main body portion 20 toward the vehicle front side. , Respectively. The side front side portion 28 is folded and sewed by a simple sewing portion 30. The simple sewing portion 30 is structured such that when the pressure in the pedestrian protection airbag 16 exceeds a predetermined pressure, the sewing is released and gas is supplied to the side front side portion 28. That is, the pedestrian protection airbag 16 is inflated and deployed independently on the left and right sides, and when gas is supplied to the inside within a predetermined pressure, the main body portion 20 and the pillar deployment portion 26 in the side portion 22 are inflated and deployed. To do. In addition, when gas is supplied to the inside of the pedestrian protection airbag 16 at a predetermined pressure or higher, the pillar deployment portion 26 and the side front side portion 28 in the main body portion 20 and the side portion 22 are inflated and deployed.

  The two-stage inflator 18 is housed in a module case, and is provided in a pair of left and right so as to supply gas to the pedestrian protection airbag 16 divided into left and right by a partition wall 24. The two-stage inflator 18 is a so-called cylinder type inflator, and a squib (ignition device) (not shown) is disposed on the shaft core portion of the two-stage inflator 18. Further, the two-stage inflator 18 is filled with a gas generating agent that generates a large amount of gas by burning. Note that the two-stage inflator 18 of the present embodiment can supply gas during operation in two stages. Specifically, the two-stage inflator 18 inflates and deploys the pedestrian protection airbag 16 at a predetermined pressure or less in the first-stage (first) gas supply, and pedestrian protection airbag in the second-stage gas supply. 16 is pressurized to a predetermined pressure or higher (in FIG. 1 and FIG. 2, the operating states of the first stage and the second stage of the two-stage inflator 18 are schematically illustrated with or without hatching. , No hatching indicates no operation).

  The two-stage inflator 18 is connected to a controller (airbag ECU) (not shown) provided in the vehicle 12. The controller is connected to the front end of the vehicle 12 with a collision detection sensor (not shown) or a collision prediction sensor (not shown) arranged in the power unit room 13 (see FIG. 1) with the vehicle width direction as the longitudinal direction. As the collision detection sensor, for example, a chamber system or an optical fiber system in which a long pressure tube or a pressure chamber and a pressure sensor are arranged along the front bumper on the front surface side of the front bumper reinforcement can be applied. As the collision prediction sensor, for example, a pre-crash sensor that predicts a collision with a collision object such as a pedestrian using a millimeter wave radar or a stereo camera can be applied.

  Further, as shown in FIG. 1, the controller is connected to a pedestrian behavior detection camera 34 as behavior detection means. The pedestrian behavior detection camera 34 is provided at a position approximately in the center of the vehicle width direction in the vehicle interior and corresponding to the upper portion of the front windshield glass 36, and images the front of the vehicle and the hood 14 through the front windshield glass 36. doing. Based on the detection result of the pedestrian behavior detection camera 34, the steering signal of the vehicle, and the like, the controller detects in which direction the pedestrian on the hood 14 moves in the vehicle width direction at the time of a pedestrian collision, for example. Note that the pedestrian behavior detection camera 34 may also serve as the above-described collision prediction sensor.

(Operation and effect of the first embodiment)
Next, the operation and effect of this embodiment will be described.

  In a state before the vehicle 12 collides with a pedestrian, the pedestrian protection airbag device 10 maintains a non-operating state. That is, the pedestrian protection airbag 16 is stored in a folded state in the module case.

  If it collides with a pedestrian from this state, it will be detected that it collided with the pedestrian by a collision detection sensor (not shown) provided in the front bumper reinforcement. The same applies when a collision with a pedestrian is predicted using a pre-crash sensor or a stereo camera. Accordingly, the first stage of the two-stage inflator 18 of the pedestrian protection airbag apparatus 10 is operated by a controller (not shown). Then, gas is ejected from the gas ejection portion of the two-stage inflator 18 and supplied into the pedestrian protection airbag 16. As a result, the pedestrian protection airbag 16 begins to inflate in the module case, and is inflated and deployed from between the rear end of the hood 14 and the lower portion of the front windshield glass 36 toward the vehicle rear side. In the inflated and deployed state, as shown in FIG. 1, the main body 20 covers the cowl (not shown) and the lower front surface of the front windshield glass 36. Further, the front of the front pillar (not shown) is covered by the pair of left and right pillar developing portions 26, so that a pedestrian riding on the hood 14 can be protected.

  Here, in this embodiment, based on the detection result of the pedestrian behavior detection camera 34 that detects the behavior of the pedestrian in front of the vehicle and on the hood 14, the second-stage gas supply is performed, and the gas is further supplied in either the vehicle width direction. A two-stage inflator 18 to be ejected on one side and a pair of left and right pedestrian protection airbags 16 and a second stage of the two-stage inflator 18 actuate an end 15 in the vehicle width direction of the hood 14 (see FIG. 1). ) And the side front side portion 28 that expands and develops. Therefore, when a pedestrian collides with the pedestrian, the pedestrian rides on the hood 14, and the pedestrian moves to either one of the end portions 15 of the hood 14 in the vehicle width direction and falls from the hood 14. In this case, the pedestrian behavior detection camera 34 detects the side on which the pedestrian has moved, and the side front side portion 28 of the pedestrian protection airbag 16 corresponding to the side on which the pedestrian has moved is expanded based on the detection result. Can be deployed. As a result, the pedestrian moving to the left or right side of the hood 14 is received by the side front side portion 28 inflated and deployed, and the pedestrian can be prevented from falling from above the hood 14. Thereby, falling of the pedestrian who got on the food | hood 14 can be suppressed, suppressing the expansion | deployment of an unnecessary airbag at the time of a pedestrian collision.

(Second Embodiment)
Next, a pedestrian protection airbag device according to a second embodiment of the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The basic configuration of the pedestrian protection airbag device 40 according to the second embodiment is the same as that of the first embodiment, and the pedestrian protection airbag 42 includes a main chamber 44 and an inner chamber 46. The inner chamber 46 is inflated and deployed by an inner chamber inflator 48 as a part of the pressurizing means.

  That is, FIG. 3 shows a plan view of the deployed pedestrian protection airbag 42 as viewed from above the vehicle. As shown in this figure, the pedestrian protection airbag 42 is accommodated in the main chamber 44 constituted by the main body portion 20 and the side portion 22, and the side portion 22 of the main chamber 44, and is substantially the same as the side portion 22. And an inner chamber 46 composed of a pair of left and right inner side portions 50 having the same shape. The side front side portion 28 in the side portion 22 of the main chamber 44 and the front side portion 51 of the inner side portion 50 of the inner chamber 46 corresponding thereto are folded so as to be built in the pillar developing portion 26 side of the side portion 22. And it is sewn by the simple sewing part 52 so that this state may be maintained. Therefore, when gas is supplied to the inside of the main chamber 44 by a single-stage inflator (not shown) as a gas generating means, the main body portion 20 and the side portion 22 with the side front side portion 28 in the side portion 22 still being sewn. The pillar deploying portion 26 inflates and deploys. In the single-stage inflator of this embodiment, gas supply during operation is performed in one stage. Further, the simple sewing portion 52 has a structure in which the sewing is released and the gas is supplied to the front side portion 51 of the inner side portion 50 when the pressure in the inner chamber 46 becomes equal to or higher than a predetermined pressure.

  Gas is supplied to the inner chamber 46 by an inner chamber inflator 48. The inner chamber inflator 48 is a so-called cylinder-type inflator, and is disposed in the center of the pedestrian protection airbag 42 in the vehicle width direction with the vehicle width direction as the longitudinal direction. In the inner chamber inflator 48 of the present embodiment, gas supply during operation is performed in one stage. Further, at both ends in the longitudinal direction of the inner chamber inflator 48, valves 54 as other parts of the pressurizing means are provided. The valve 54 is normally closed, and when the inner chamber inflator 48 is operated, either one of the left and right valves 54 is opened, so that the valve 54 on the side corresponding to the opened valve 54 in the inner chamber 46 is opened. Gas is supplied to the inner side part 50, and the inner side part 50 supplied with the gas is pressurized to a predetermined pressure or higher. Thereby, the sewing of the simple sewing portion 52 is released, and the front side portion 51 of the inner side portion 50 and the side front side portion 28 of the main chamber 44 are inflated and deployed.

  The single-stage inflator, the inner chamber inflator 48 and the valve 54 are connected to a controller (not shown). The controller controls the operation of the one-stage inflator, the inner chamber inflator 48 and the valve 54. Specifically, when the controller detects that the pedestrian on the hood 14 has moved in one of the left and right directions based on the detection result of the pedestrian behavior detection camera 34 and the steering signal of the vehicle, the controller The chamber inflator 48 is operated and the valve 54 corresponding to the side on which the pedestrian moves is opened.

(Operation and effect of the second embodiment)
Next, the operation and effect of this embodiment will be described.

  Also according to the above configuration, the pedestrian protection airbag 42 includes the main chamber 44 and the inner chamber 46, and the inner chamber 46 is inflated and deployed by the inner chamber inflator 48. Since it is comprised similarly to the airbag apparatus 10, the effect similar to 1st Embodiment is acquired.

  That is, when colliding with a pedestrian, the one-stage inflator of the pedestrian protection airbag device 40 is operated by a controller (not shown). Then, the gas is ejected from the gas ejection portion of the single-stage inflator, and the gas is supplied into the main chamber 44 of the pedestrian protection airbag 16. As a result, the main chamber 44 begins to expand in the module case, and expands and deploys from the space between the rear end of the hood 14 and the lower portion of the front windshield glass 36 toward the vehicle rear side (see FIG. 1). In the inflated and deployed state, the main body 20 covers the cowl (not shown) and the lower front surface of the front windshield glass 36 shown in FIG. Further, the front of the front pillar is covered by the pair of left and right pillar developing portions 26, and a pedestrian riding on the hood 14 can be protected.

  In this embodiment, the inner chamber inflator 48 and the valve 54 that operate based on the detection result of the pedestrian behavior detection camera 34 that detects the behavior of the pedestrian in front of the vehicle and on the hood 14, and a pedestrian protection airbag 42 and a side front side portion 28 that is inflated and deployed at one of the end portions 15 (see FIG. 1) in the vehicle width direction of the hood 14 by the operation of the inner chamber inflator 48 and the valve 54. ing. Therefore, when a pedestrian collides with the pedestrian, the pedestrian rides on the hood 14, and the pedestrian moves to either one of the end portions 15 of the hood 14 in the vehicle width direction and falls from the hood 14. In this case, the pedestrian behavior detection camera 34 detects the side on which the pedestrian has moved, and the side front side portion 28 of the pedestrian protection airbag 42 corresponding to the side on which the pedestrian has moved is expanded based on the detection result. Can be deployed. As a result, the pedestrian moving to the left or right side of the hood 14 is received by the side front side portion 28 inflated and deployed, and the pedestrian can be prevented from falling from above the hood 14. Thereby, falling of the pedestrian who got on the food | hood 14 can be suppressed, suppressing the expansion | deployment of an unnecessary airbag at the time of a pedestrian collision.

(Third embodiment)
Next, a pedestrian protection airbag device according to a third embodiment of the present invention will be described with reference to FIGS. Note that components that are basically the same as those in the first and second embodiments described above are denoted by the same reference numerals and description thereof is omitted.

  The basic configuration of the pedestrian protection airbag device 56 according to the third embodiment is the same as that of the second embodiment, and the side front side portion 28 of the main chamber 44 and the inner chamber 46 of the pedestrian protection airbag 58 are arranged. It is characterized in that the front side portion 51 of the inner side portion 50 is not sewn.

  That is, FIG. 5 shows a plan view of the deployed pedestrian protection airbag 58 viewed from above the vehicle. As shown in this figure, the main chamber 44 to which the gas is supplied from the single-stage inflator 19 (see FIG. 4) is expanded and deployed at the main body 20 and the side part 22 with the pillar developing part 26 and the side front side part 28 inflated. The The single-stage inflator 19 is supplied with gas in one stage during operation.

  The inner chamber 46 includes a pair of left and right inner side portions 50 that are respectively housed in the side portions 22 of the main chamber 44 and have substantially the same shape as the side portions 22. Since gas is supplied to the inner chamber 46 by the inner chamber inflator 48, the inner chamber inflator 48 does not inflate and deploy when only the one-stage inflator 19 is operated, and the inner chamber inflator 48 is operated to open the valve 54 ( The white space in the figure) and the main chamber 44 are inflated and deployed.

(Operations and effects of the third embodiment)
Next, the operation and effect of this embodiment will be described.

  Also with the above configuration, the pedestrian protection airbag 58 includes the main chamber 44 and the inner chamber 46, and the inner chamber 46 is inflated and deployed by the inner chamber inflator 48. Since it is comprised similarly to the airbag apparatus 40, the effect similar to 2nd Embodiment is acquired.

  That is, when colliding with a pedestrian, the one-stage inflator 19 as a gas generating means of the pedestrian protection airbag device 56 is operated by a controller (not shown). Then, gas is ejected from the gas ejection portion of the single-stage inflator 19, and the gas is supplied into the main chamber 44 of the pedestrian protection airbag 58. As a result, the main chamber 44 starts to expand in the module case, and is expanded and deployed from the space between the rear end of the hood 14 and the lower portion of the front windshield glass 36 toward the vehicle rear side. In the inflated and deployed state, as shown in FIG. 4, the main body 20 covers the cowl (not shown) and the lower front surface of the front windshield glass 36. Further, the front surface of the front pillar is covered by the pair of left and right pillar developing portions 26. Furthermore, at least a part of the end portion 15 of the hood width hood is covered by the pair of left and right side front side portions 28. By these, a pedestrian riding on the hood 14 can be protected.

  In this embodiment, the inner chamber inflator 48 and the valve 54 that operate based on the detection result of the pedestrian behavior detection camera 34 that detects the behavior of the pedestrian in front of the vehicle and on the hood 14, and a pedestrian protection airbag 58 and a side front side portion 28 that expands and deploys at one of the end portions 15 in the vehicle width direction of the hood 14 by the operation of the inner chamber inflator 48 and the valve 54. Therefore, when a pedestrian collides with the pedestrian, the pedestrian rides on the hood 14, and the pedestrian moves to either one of the end portions 15 of the hood 14 in the vehicle width direction and falls from the hood 14. In this case, the side where the pedestrian moves is detected by the pedestrian behavior detection camera 34, and the side front side portion 28 of the pedestrian protection airbag 58 corresponding to the side on which the pedestrian moves based on the detection result is hard. Become. As a result, since the reaction force of the inflated and deployed side front side portion 28 increases, a pedestrian moving to the left or right side of the hood 14 is received by the side front side portion 28 and the pedestrian is prevented from falling from above the hood 14. can do. Thereby, falling of the pedestrian who got on the food | hood 14 can be suppressed, suppressing the expansion | deployment of an unnecessary airbag at the time of a pedestrian collision.

(Other embodiments)
In the first to third embodiments described above, only the pedestrian protection airbag devices 10, 40, and 56 are configured to operate at the time of a pedestrian collision, but not limited thereto, as shown in FIG. In combination with the pop-up hood device 60, the pedestrian protection airbag device 10, 40, 56 may be configured to operate. That is, on both sides in the vehicle width direction of the rear end of the hood 14, a pop-up hood device 60 that raises the rod 62 and raises the rear end of the hood 14 at the time of a collision with a pedestrian is disposed. As an example, the pop-up hood device 60 is configured to lift the rear end of the hood 14 by raising the rod 62 by the operation of the gas generating means. However, the present invention is not limited thereto, and other configurations may be applied. Good. For example, the rear end of the hood 14 may be popped up by a link mechanism.

  In this configuration, when a collision with a pedestrian is detected and a collision with a pedestrian is predicted, the pop-up hood device 60 is actuated by a controller (not shown), and the rear end of the hood 14 is raised to a predetermined height toward the vehicle upper side. (Pop-up) and the pedestrian protection airbag devices 10, 40, 56 are activated to inflate and deploy the pedestrian protection airbags 16, 42, 58. Thereafter, when the pedestrian on the hood 14 moves to the left or right side of the hood 14 and is about to fall from the hood 14, the pedestrian behavior detection camera 34 detects the side on which the pedestrian has moved, and this detection result The second stage of the two-stage inflator 18 corresponding to the side on which the pedestrian has moved is operated, or the inner chamber inflator 48 and the valve 54 on the moved side are operated, and opposite to the side on which the pedestrian has moved. The rod 62 of the side hood 14 is contracted. Accordingly, a pedestrian moving to the left or right side of the hood 14 is received by the inflated and deployed side front side portion 28, and the pedestrian can be prevented from falling from above the hood 14. Since the hood 14 is tilted so that the end in the vehicle width direction on the moving side becomes higher, the pedestrian can be further prevented from falling from the hood 14.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above, and various modifications other than those described above can be implemented without departing from the spirit of the present invention. Of course.

10 Pedestrian Protection Airbag Device 14 Hood 15 End 16 Pedestrian Protection Airbag 18 Two-stage Inflator (Gas Generation Means, Pressurization Means)
19 One-stage inflator (gas generating means)
28 Side front side 34 Pedestrian behavior detection camera (behavior detection means)
36 Front windshield glass 40 Pedestrian protection airbag device 42 Pedestrian protection airbag 48 Inner chamber inflator (pressurizing means)
54 Valve (Pressurizing means)
56 Pedestrian Protection Airbag Device 58 Pedestrian Protection Airbag

Claims (1)

A gas generating means which is provided in the hood and which ejects gas by operating;
A pressurizing means for injecting the gas in any one of the vehicle width directions based on the detection result of the behavior detecting means for detecting the behavior of the collision body on the hood in front of the vehicle;
When the gas is supplied by the gas generating means, it is inflated and deployed to the rear of the vehicle so as to cover at least the front pillar and the cowl from between the rear end of the hood and the front windshield glass, and is provided in a pair of left and right And a pedestrian protection airbag having a side front side portion that is inflated and deployed at one of the end portions in the vehicle width direction of the hood when the gas is supplied by the pressurizing means,
A pedestrian protection airbag device.