JP4481782B2 - Non-occupant protection device - Google Patents

Description

  The present invention relates to a non-occupant protection device using an air bag that protects a colliding non-occupant when a collision between a non-occupant such as a pedestrian and a vehicle is unavoidable.

2. Description of the Related Art Conventionally, there has been known a pedestrian protection device provided with a so-called pedestrian protection airbag that reduces a shock to a pedestrian when a collision between a vehicle and a pedestrian is unavoidable. This pedestrian protection device supports the rear end portion of the hood at the front of the vehicle body so as to be lifted, and stores a bag-like airbag folded under the rear end of the hood. And when this pedestrian protection device detects a collision between a vehicle and a pedestrian, the gas is supplied to deploy the airbag, the rear end of the hood is lifted by this airbag, and the walking When the person collides with the hood, the space where the hood deforms is secured to improve shock absorption characteristics. The airbag covers the pillars on both sides of the windshield, and the pedestrian's head is pillared. The impact at the time of colliding with a part is eased (for example, refer patent document 1). The airbag is formed in a substantially U-shaped bag shape. First, the airbag is expanded upward, the rear end of the hood is pushed up, and the bottom of the hood where both ends of the pushed up hood are inclined. It is guided to the rear and extends along the pillar part.
JP 2000-264146 A (first page, FIG. 3-4)

  Even under normal conditions, the lower surface of the hood is inclined backward and upward, and the airbag that is deployed upward is guided rearward by the inclined surface. It has a problem that is not easy to move. Further, when the rear end portion of the hood is raised, the lower surface of the hood is further inclined to guide the airbag to the rear, and there is a problem that the force for raising the hood becomes small. On the other hand, the shape of the hood is determined based on various functions and design requirements, and it may not be easy to form the hood in a shape that takes into account the development of the airbag.

  The present invention has been made in view of such a point, and an object thereof is to provide a non-occupant protection device capable of quickly moving a vehicle body member by an airbag.

The non-occupant protection device according to claim 1 is arranged by folding a deformable hood provided at a front portion of the vehicle, a vehicle body member facing the rear portion of the hood, and a vehicle body member positioned below the rear portion of the hood. An air bag that is supplied with gas, deploys, presses the rear part of the hood, rotates the hood with the front end of the vehicle as a fulcrum, and moves the rear part of the hood upward away from the vehicle body member And an inflator for supplying gas to the airbag, and a control means for operating the inflator by detecting a collision with a non-occupant,
The hood is provided with a facing surface facing the airbag, and the facing surface is inflated with respect to the center direction of the initial bulging direction of the airbag inclined by a predetermined angle. The airbag is tilted in the direction of guiding the airbag out to the front of the vehicle.

In this configuration, when the control means detects a collision between the non-occupant and the vehicle, that is, detects an impact that the non-occupant actually collides with the vehicle or predicts an unavoidable collision between the vehicle and the non-occupant, The gas is supplied from the air bag to the air bag, and the air bag is deployed to press and move the hood upward. When a non-occupant who has collided with the front of the vehicle and collided with the hood further collides with the hood, a space required for the deformation of the hood is secured, and the shock absorption characteristics are improved. The facing surface provided on the hood facing the airbag is inclined in the direction of guiding the bulged airbag forward with respect to the central direction of the initial inflation direction inclined by a predetermined angle in front of the airbag. As a result, the airbag is prevented from escaping from the rear end of the hood at the initial stage of deployment, and the force that the airbag inflates is efficiently transmitted to the hood, and the hood is quickly moved to a predetermined position to deform the hood. Easily improves the shock absorption characteristics of non-occupants and effectively protects them.

Ones claim 2 non occupant protection system described in the non-occupant protection system according to claim 1, airbags is the central direction of the initial bulging direction is arranged to be inclined toward the front of vehicles It is.

And, in this arrangement, airbags, since the center of the bulging direction is arranged so as to be inclined forward, the force of the air bag to the hood to move so as to rotate the upper front bulges are efficiently The air bag is prevented from escaping from the rear end of the hood at the beginning of deployment, the hood is quickly moved to a predetermined position, and the shock absorption characteristics due to deformation of the hood are easily improved. Effectively protected. Further, the force applied from the non-occupant is normally applied to the hood from the front upper side, but the position of the hood is maintained by the force facing the force substantially from the front even in the initial stage of deployment, and a space required for the deformation of the hood is secured.

  The non-occupant protection device according to claim 3 is the non-occupant protection device according to claim 1 or 2, wherein the airbag presses the hood and moves upward, and the first air chamber. And a second air chamber covering at least a part of the pair of pillar portions that support both side portions of the windshield located behind the hood.

  In this configuration, the hood is quickly moved to a predetermined position by the first air chamber at the initial stage of deployment, and the shock absorption characteristics due to the deformation of the hood are easily improved, and the non-occupant is effectively protected. Next, gas is supplied from the first air chamber to the second air chamber, the second air chamber expands to cover at least a part of the pillar portion, and the impact when a non-occupant collides with the pillar portion is reduced. Is done.

  According to the present invention, when a collision between a vehicle and a non-occupant is detected, the hood can be quickly moved to a predetermined position, and the non-occupant colliding with the vehicle can be effectively protected by deformation of the hood.

  Hereinafter, an embodiment of a non-occupant protection device of the present invention will be described with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes an automobile body, which is a vehicle. The vehicle body 1 includes a hood 3 that covers a front engine room 2, and a windshield that covers a vehicle room 4 located behind the engine room 2. A glass 5 and a cowl top cover 8 as a vehicle body member covering the cowl portion 7 between the engine room 2 and the vehicle compartment 4 are attached, and are located below the rear end of the hood 3. A pedestrian protection device 10 which is a non-occupant protection device is provided. Hereinafter, directions such as forward (arrow F direction), upward (arrow U direction), and both side directions (arrow W direction) will be described with reference to the straight traveling direction of the vehicle body 1.

  The hood 3 is also called a bonnet hood or a front hood, and is provided at the front of the vehicle body 1 and formed of one or more metal plates, and constitutes a so-called pedestrian injury reducing body. However, when a pedestrian as a non-occupant collides, it is easily deformed to absorb the impact. An opposing surface 11 is formed in the vicinity of the rear end portion of the lower surface of the hood 3. And this opposing surface 11 comprises a curved surface shape, and as a whole, it is formed as an inclined surface which goes to the front lower side along the shape of the hood 3. In addition, the hood 3 is provided so as to be able to be opened and closed with a pair of support portions 12 which are hinge mechanisms provided on both side portions near the rear end portion as fulcrums, that is, rotating shafts, and during operation of the pedestrian protection device 10, Each support portion 12 supports the rear end portion of the hood 3 so as to be raised by a predetermined distance.

  The windshield 5 is supported on both sides by A pillars 14 as pillar portions, and the lower surface near the front end is supported by a cowl top panel 16 via a seal portion 15.

  Further, the cowl portion 7 is also called an air box or the like, and is provided in a bowl shape having an upper opening between a plurality of vehicle body panels (not shown), and a cowl top cover 8 is attached to cover the opening. The cowl unit 7 is provided with a motor for driving a wiper and the like, and is connected to an air intake unit of an air conditioner. Further, the cowl top cover 8 is supported by being fitted to the windshield 5 at the rear end portion, and is supported on a support base portion provided on the vehicle body panel.

  The pedestrian protection device 10 is a so-called pedestrian protection airbag device, and includes a bag-like airbag 21 that is folded and stored in a cowl portion 7 below the rear end portion of the hood 3 on the front side of the vehicle body 1. ing. Then, by supplying gas to the airbag 21 and deploying it, the rear end of the hood 3 is lifted to secure a deformation area below the hood 3, improving the shock absorption characteristics of the hood 3 and deploying. The airbag 21 covers at least a part of the upper surface of the cowl portion 7 and the front surface of the A pillar 14. That is, the pedestrian protection device 10 includes an airbag 21, an inflator 22 that supplies gas to the airbag 21, a retainer 24 that fixes the airbag 21 and the inflator 22, and a case 25 that houses these members. And a control device (not shown).

  As shown in FIG. 2 and the like, the airbag 21 is formed in a bag shape having an outer shell formed by stitching the outer peripheral portions of two base fabrics together with an outer peripheral suture line 31, and as a whole, extends in both sides. 33 and the projecting portion 34 projecting from both ends of the base 33 are substantially U-shaped. Further, inside the outer shell, along the longitudinal direction of the base portion 33, a partition wall portion 36 formed by the base fabric is sewn to each base fabric constituting the outer shell by an inner suture line 37. Further, in the vicinity of both end portions of the partition wall portion 36, a communication portion 38 which is a ventilation portion having a circular hole shape or the like is formed. The partition wall 36 allows the base 33 inside the airbag 21 in the present embodiment to be substantially airtight to the first air chamber 41 and the second air chamber 42 except for the communication portion 38. It is partitioned. In other words, the first air chamber 41 and the second air chamber 42 are formed to communicate with each other only through the communication portion 38.

  The first air chamber 41 is a front air chamber that is at least partially positioned below the hood 3 when deployed, and a hood pushing portion 43 that pushes up the hood 3 and a hood pushing portion 43 behind the hood pushing portion 43. The first air chamber 41 accommodates the inflator 22 and the retainer 24 in pairs on both sides. Further, the first air chamber 41 as a whole is formed so that the dimension in the front-rear direction is substantially constant and the both sides are in the longitudinal direction, but the end portions on both sides are the communication part 38, that is, the second air chamber 42. It is formed as an inclined surface 45 that expands toward the surface. That is, the dimension in both directions is expanded from the hood pushing portion 43 toward the cowl covering portion 44, and the width dimension of the cowl covering portion 44 of the first air chamber 41 is formed larger than the hood pushing portion 43. Yes. Further, the inclined surface 45 is smoothly continuous with both sides of the second air chamber 42 so that the width dimension of the second air chamber 42 is larger than the cowl covering portion 44 of the first air chamber 41. Is formed. The second air chamber 42 is a rear air chamber located on the rear side of the first air chamber 41, and includes a pillar covering portion 46 constituted by each projecting portion 34 and an upper portion of the base portion 33. And a cowl covering portion 47. Moreover, although not shown in figure, the reinforcement cloth called a flameproof cloth etc. is piled up and sewed on these base fabrics as needed.

  Each inflator 22 is a gas generator, and includes a substantially cylindrical main body 22a, and a gas injection part 22b is provided on one end side of the main body 22a. The inflator 22 is supplied with an ignition signal to a connector (not shown) to react the propellant filled inside, or to release the gas stored in the internal cylinder, etc. Gas is injected from a plurality of holes provided on the peripheral surface. In this embodiment, the two inflators 22 are arranged so that the gas injection portions 22b face opposite sides.

  The retainer 24 is an inflator fixture including a retainer main body 49 formed by bending a metal plate and a bolt 50 fixed to the retainer main body 49. The retainer main body 49 fixes the inflator 22 and guides the gas injected from the gas injection unit 22b. As shown in FIG. 1, a nut 51 is screwed onto the bolt 50.

  Further, the case 25 includes a case main body portion 54 having a groove shape with a predetermined direction as an opening 54a, and a lid portion 55 that covers the opening 25a. The case main body 54 includes a bottom plate portion 54b positioned on the opposite side of the opening 54a, and a front plate portion 54c and a rear plate portion 54d extending in a predetermined direction from front and rear ends of the bottom plate portion 54b. It is formed integrally with the cover 8. Here, the predetermined direction is a direction along the central direction O of the airbag 21 bulging, and the central direction O is a predetermined angle θ1 (0 <θ1 <0) forward F from the vertical line V toward the upper U. 90) and the angle θ2 formed between the upper side of the central direction O, that is, the rear side, and the tangent 11a of the opposing surface 11 is a portion where the central direction O intersects the opposing surface 11 of the hood 3. , Smaller than 90 degrees (0 <θ2 <90), that is, the angle θ3 formed between the lower side of the central direction O, that is, the front side, and the tangent 11a of the opposing surface 11 is larger than the angle θ2 (θ3 > Θ2) and larger than 90 degrees (90 <θ2 <180). Further, the angle θ4 formed by the upper side of the central direction O, that is, the rear side, and the upper surface of the hood 3 is set to be smaller than 90 degrees (0 <θ2 <90). Further, in the vicinity of the lower end portion of the rear plate portion 54d of the case main body portion 54, a hinge portion 54e that allows the rear plate portion 54d to be bent is formed. The lid portion 55 is formed with a tear line as a breakable breakable portion which is a weak portion along the longitudinal direction.

  The connector of each inflator 22 is connected to a control device (not shown) via a harness. The control device includes a CPU and the like, and includes a plurality of sensors as detection means, and detects a collision between a non-occupant such as a pedestrian and the vehicle body 1, that is, detects an impact of an actual collision, or Each inflator 22 is actuated by determining the inevitable collision.

  Further, as shown in FIG. 2, the support portions 12 are positioned on both sides of the case 25, that is, on both sides of the airbag 21 that is folded and stored, and the vehicle body panel side of the vehicle body 1 and the vicinity of the rear end portion of the hood 3. Connected. And each support part 12 connects the one end of the link shaft of two elongate metal plates so that rotation is possible at a shaft part, for example, and the other end of one link shaft is connected to the vehicle body panel side of the vehicle body 1 The other end of the link shaft is connected to the hood 3 side. When the normal hood 3 is opened and closed, the shaft portion of the support portion 12 serves as a rotation shaft, and the front end portion of the hood 3 rotates upward. On the other hand, when the pedestrian protection device 10 is activated and an upward force is applied to the rear end portion of the hood 3, the shaft portion rotates and the other end of each link shaft rotates as a rotation shaft, The rear end portion of the hood 3 is moved upward by a predetermined dimension, for example, about 5 cm, and can be rotated about the front end side as a fulcrum.

  Then, the assembly process of the pedestrian protection device 10 is performed by inserting an assembly in which the inflator 22 and the retainer 24 are combined into the first air chamber 41 of the airbag 21 and attaching the bolt 50 of the retainer 24 to the airbag 21. The airbag 21 is folded into a predetermined shape after being pulled out. Then, the folded airbag 21 is inserted into the case main body 54, and the bolt 50 is passed through the support base formed on the cowl top cover 8 and the vehicle body panel of the vehicle body 1 so that the bolt 50 is formed from below the support base. The nut 51 is screwed and tightened. Then, the retainer 24 fixes the front end portion of the airbag 21 and the inflator 22 together with the cowl top cover 8 to the support base portion of the vehicle body panel. Then, by covering the upper opening 54a of the case main body 54, attaching the lid portion 55, and electrically connecting the inflator 22 and the control device with a harness, as shown in FIG. A device 10 is configured.

  Next, the folded state and folding process of the airbag 21 will be described.

  When the airbag 21 is folded, as shown in FIG. 1 (a), basically, the first air chamber 41 and the second air chamber 42 are separately folded, and the first air chamber 21 is folded. After the chamber 41 is expanded, the second air chamber 42 is expanded. The second air chamber 42 is wound and folded in a roll shape from the distal end side, and the first air chamber 41 is folded so as to wrap around the wound second air chamber 42. In other words, the first air chamber 41 is folded with a small expansion resistance with respect to the second air chamber 42, and the first air chamber 41 is folded so as to be rapidly deployable from the second air chamber 42. ing. In addition, the direction in which the second air chamber 42 is wound is the direction in which the tip portion which is the upper end portion is wound around the A pillar 14 side, that is, the lower side. The direction of rotation is such that the pillar 14 is rubbed. And in the state folded in this way, shape is hold | maintained with the wrapping member etc. which are not shown in figure, and a folding process is complete | finished.

  Next, the operation of the pedestrian protection device 10 will be described.

  First, as shown in FIG. 1 (a), when the control device detects a collision between the front portion of the vehicle body 1 and a pedestrian with the folded airbag 21 housed in a case 25, that is, When the impact is detected or it is determined that the collision is inevitable by calculating from the traveling speed of the vehicle and the distance from the pedestrian, the control device supplies a signal, that is, power, and activates the inflator 22 Let Then, the inflator 22 supplies the gas G from the gas injection unit 22b to the first air chamber 41. At this time, the airbag 21 is folded so that the first air chamber 41 can be quickly deployed from the second air chamber 42, and the first air chamber 41 and the second air chamber 42 are separated by the partition wall 36. The first air chamber 41 and the second air chamber 42 communicate with each other only through the communication portion 38 having a large ventilation resistance. As shown in (b), the gas G supplied from the inflator 22 stays in the first air chamber 41, and is further guided by the front plate portion 54c and the rear plate portion 54d. Deploy quickly and reliably toward the center direction O of the bulge. The unfolding pressure pushes up the rear end of the hood 3 by a predetermined dimension, and the hood pushing portion 43 of the first air chamber 41 causes the hood 3 to be interposed between the hood 3 and the members in the engine room 2. A clearance required for the deformation is secured, and the impact absorption characteristics are improved. Further, due to the pressure at which the first air chamber 41 swells, the hinge portion 54e bends to rotate the rear plate portion 54d rearward, and the swelled first air chamber 41 and the second in the swelling process. The air chamber 42 is moved rearward, and a part of the cowl portion 7 is covered with the cowl covering portion 44 of the first air chamber 41 and the like.

  Further, in a state where the first air chamber 41 is sufficiently expanded, the gas G is supplied from the first air chamber 41 to the second air chamber 42 through the communication portions 38 provided in the vicinity of both end portions in both sides. As shown in FIGS. 1B and 1C, the second air chamber 42 is rewound while rotating so as to rub the A pillar 14, and the pillar covering portion 46 and the cowl of the second air chamber 42 are unwound. The covering 47 is developed. The pillar covering portion 46 covers part or all of the A pillar 14 and the cowl covering portion 47 covers the wiper of the cowl portion 7, the lower end portion of the windshield 5, etc. The impact at the time of collision is reduced.

  That is, in the airbag 21, the hood pushing portion 43 of the first air chamber 41 is positioned between the support portions 12 on both sides, and the cowl covering portion 44 and the second air chamber 42 of the first air chamber 41 are located. Is deployed behind the first air chamber 41 and bulges laterally from the support portion 12.

  In this state, when a pedestrian who is lifted up collides with the hood 3, the hood 3 is deformed with a sufficient stroke, exhibits a predetermined shock absorption characteristic, and alleviates the impact on the pedestrian. Further, the A pillar 14 and the uneven members of the cowl portion 7 are covered by the second air chamber 42, so that collision between these members and the pedestrian is avoided, and the pedestrian is protected.

  As described above, according to the present embodiment, in the so-called pedestrian protection airbag (pedestrian airbag) that is arranged on the cowl portion 7 of the automobile and lifts the hood 3 by the airbag 21, the hood 3 is efficiently powered. In addition, the hood 3 is quickly moved to a predetermined position, and the airbag 21 smoothly covers the A pillar 14, and a pedestrian who collides with the vehicle is effective by the deformation of the hood 3 and the airbag 21 covering the A pillar 14. Can be protected. That is, when the first air chamber 41 is inflated, as shown in FIG. 1B, the airbag 21 is inclined by a predetermined angle θ1 from the upper U to the front F, that is, the direction inclined forward is defined as the central direction O. Since it swells, it is possible to efficiently apply a force to the hood 3 that rotates upward in the front direction and to move the hood 3 quickly. This central direction O is indicated by a dummy D in FIG. Thus, since the pedestrian who has been lifted is in a direction directly opposite to the typical direction in which the pedestrian moves toward the hood 3, the position of the hood 3 is also detected when the pedestrian collides with the hood 3 in the initial deployment of the airbag 21. Can be held.

  Further, as shown in FIG. 1A, the center direction O of the airbag 21 bulges out so that the front angle θ3 is larger than the rear angle θ2 with respect to the opposed surface 11 of the hood 3. Since it is set to be inclined, the airbag 21 tends to be guided to move forward F in a state where the airbag 21 is in contact with the opposing surface 11 of the hood 3 in the initial stage of deployment. Therefore, the airbag 21 is prevented from bulging out of the rear end of the hood 3 at the initial stage of deployment, so to speak, the airbag 21 is held and force is applied to the hood 3 efficiently. Can be moved to.

  Assuming that, for example, the airbag 21 is deployed upward U and that the opposing surface 11 of the hood 3 is an inclined surface inclined upward toward the rear side, as shown in FIG. The inflated airbag 21 presses the opposing surface 11 of the hood 3 with a force F1, and is guided by the opposing surface 11 to inflate rearward and upward from the initial stage of deployment. Here, with respect to the force P1 applied to the hood 3 by the pedestrian, the force F1 is decomposed into the force F2 facing the opposite surface 11 and the force F3, and the force F3 is effective for the deployment of the hood 3. Not used. Furthermore, since the airbag 21 is inflated to the rear of the hood 3 from the initial stage of deployment, the output of the inflator 22 needs to be increased. In this regard, according to the present embodiment, since the inflating force of the airbag 21 can be used almost as a force for pushing up the hood 3 at the initial stage of deployment, the output of the inflator 22 can be used effectively, and a small inflator can be used. The hood 3 can be moved quickly at 22.

  Further, a plurality of air chambers are provided by providing a partition without forming the inside of the airbag 21 as a single air chamber. In the present embodiment, a partition wall 36 is provided inside the air bag 21, and the hood 3 is provided. Since the first air chamber 41 to be lifted and the second air chamber 42 covering the cowl portion 7 including the A pillar 14 and the lower end portion of the windshield 5 are partitioned, the air bag 21 quickly removes the hood 3 with sufficient pressure. As the air is lifted, the gas is less likely to return from the second air chamber 42 to the first air chamber 41, and the position of the lifted hood 3 can be stably held by the airbag 21 that holds the pressure. Bounce can be suppressed.

  Further, regarding the folding method of the airbag 21, the pillar covering portion 46 of the second air chamber 42 is wound and folded from the front end side, and the hood pushing portion 43 of the first air chamber 41 is more than the pillar covering portion 46. The folding shape is small and easy to deploy. Therefore, by supplying gas from the inflator 22 to the hood pushing portion 43, the movement toward the rear and outside in the initial stage of deployment is suppressed, and the pressure at the initial stage of deployment is applied to the hood pushing section 43 adapted to the width of the hood 3. The hood pusher 43 can be quickly deployed and the hood 3 can be quickly lifted by the airbag 21 with sufficient pressure.

  Furthermore, since the hood 3 can be lifted quickly and stably, a stable gap can be secured between the rear end portion of the hood 3 and the cowl top cover 8 below the hood 3, that is, the hood 3 can be lifted sufficiently. The pillar covering portion 46 of the second air chamber 42 is rapidly and smoothly expanded from the gap below the formed hood 3 without interfering with surrounding members, and the lower end of the A pillar 14 and the windshield 5 The cowl part 7 containing can be covered.

  Further, the pillar covering portion 46 of the second air chamber 42 is wound so that the tip portion which is the upper end portion is wound around the A pillar 14 side, that is, the lower side, so that the A pillar 14 and the front are rubbed to rub the A pillar 14. It can be developed very close to the glass 5.

  Further, the hood pushing portion 43 of the first air chamber 41 is developed in a space having a relatively small dimension in the both-side direction W between the support portions 12 on both sides, and the cowl covering portion 44 of the first air chamber 41. The second air chamber 42 is developed in a space having a dimension in the both-side direction W larger than that of the hood pushing portion 43, but the side portion of the first air chamber 41 is inclined to expand outward toward the rear. Since the surface 45 is used, the gas smoothly flows in the first air chamber 41 and from the first air chamber 41 to the second air chamber 42, and the support portion 12 does not interfere with the deployment of the airbag 21. The part outside 12 can be smoothly and quickly deployed.

In the above-described embodiment, the case body portion 54 of the case 25 that houses the airbag 21 and the inflator 22 of the pedestrian protection device 10 is provided integrally with the cowl top cover 8, but is not limited to this configuration. The case main body formed separately from the cowl top cover 8 can be disposed separately from the cowl 7. Further, the lid 55 covering the opening 25a of the case 25 can be omitted .

  In the above embodiment, the hood pushing portion 43 of the first air chamber 41 is folded in a so-called alligator shape, but is not limited to this configuration, and can be folded in a bellows shape, for example. For example, the pillar covering portion 46 of the second air chamber 42 folded in a roll shape can be arranged so that the hood pushing portion 43 is folded in a bellows shape and placed on the hood pushing portion 43. Further, the pillar covering portion 46 of the second air chamber 42 is wound so that the tip portion as the upper end portion is wound around the A pillar 14 side, that is, the lower side. It can also be wound so as to wind from the pillar 14 side, that is, from the upper side to the front side. In this configuration, the pillar covering portion 46 can be rapidly deployed so as to roll on the A pillar 14.

  Further, in the above-described embodiment, each projecting portion 34, that is, each pillar covering portion 46 is inclined in the direction in which the front end side is expanded in a state where the airbag 21 is spread on a plane. It is not limited, and it can be arranged substantially perpendicular to the base 33, or can be inclined in a direction in which the tip sides are slightly closer to each other. Further, in the present embodiment, the communication portion 38 is configured by a plurality of circular holes formed in the partition wall portion 36, and each of the circular holes is directed to the pillar covering portion 46 and the other is directed to the cowl covering portion 47. However, other shapes such as a slit shape can be adopted. Further, in the above-described embodiment, the partition wall portion 36 is basically configured by arranging a single base cloth over the entire length along the both-side direction W at the intermediate position in the front-rear direction of the base portion 33. The configuration is not limited to the above, and a plurality of base fabrics may be used, or partition walls 36 may be provided at boundary portions between the base portion 33 and the plurality of projecting portions 34, respectively. Furthermore, a gas guiding means for guiding the gas flow can be provided in the air chamber in the airbag 21, so that desired deployment characteristics can be realized.

  The present invention can be applied to a vehicle having a hood at the front.

It is explanatory drawing which shows one Embodiment of the non-occupant protection apparatus of this invention, (a) is before deployment of an airbag, (b) is the deployment initial stage of an airbag, (c) is in the state following (b). is there. It is explanatory drawing of a non-occupant protection apparatus same as the above. It is explanatory drawing which shows the comparative example of a non-occupant protection apparatus .

Explanation of symbols

3 Hood 5 Windshield as windshield 8 Cowl top cover as body member
10 Pedestrian protection device as non-occupant protection device
11 Opposite surface
14 A-pillar as pillar
21 airbag
22 Inflator
41 First air chamber
42 Second air chamber O Center direction

Claims (3)

A deformable hood provided at the front of the vehicle;
The vehicle body member facing the rear portion of the hood and the vehicle body member positioned below the rear portion of the hood are arranged in a folded state, supplied with gas and deployed, press the rear portion of the hood, and the front end of the vehicle of the hood An airbag that rotates around the side and moves the rear portion of the hood upward away from the vehicle body member;
An inflator for supplying gas to the airbag;
Control means for operating the inflator by detecting a collision with a non-occupant,
The hood is provided with a facing surface facing the airbag, and the facing surface is inflated with respect to the center direction of the initial bulging direction of the airbag inclined by a predetermined angle. A non-occupant protection device, wherein the taken-out airbag is inclined in a direction for guiding the airbag forward. The non-occupant protection device according to claim 1, wherein the airbag is arranged such that a center direction of an initial bulging direction is inclined toward the front of the vehicle. The airbag has a first air chamber that pushes the hood and moves it upward, and gas is supplied through the first air chamber to deploy, and both side portions of the windshield that are located behind the hood are The non-occupant protection device according to claim 1, further comprising a second air chamber that covers at least a part of the pair of pillar portions to be supported.

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