JP2006035892A - Pedestrian protection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pedestrian protection device capable of protecting a pedestrian at the time of a primary collision and preventing fall of the pedestrian to a road surface after the primary collision. <P>SOLUTION: This device S is provided with an airbag 14 deploying and inflating from the vicinity of a front bumper 4 on a front surface side of a vehicle V to an upper side exceeding the height of a hood panel 9 and having a width dimension substantially equal to a width dimension of the vehicle V, to complete the inflation. The airbag 14 is provided with a plurality of locking holes 17 capable of locking of the body portion of the pedestrian by passing in the longitudinal direction at the time of the completion of inflation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is mounted on a vehicle and can protect a pedestrian at the time of a primary collision. Further, the pedestrian can be prevented from falling to the road surface after the primary collision, thereby preventing a pedestrian from being damaged by the road surface. The present invention relates to a pedestrian protection device.

Conventionally, as a pedestrian protection device that can protect a pedestrian at the time of a primary collision with a vehicle,
Some airbags are deployed and inflated from the vicinity of the front bumper on the front side of the vehicle to above the height of the hood panel, and have an airbag having a width dimension substantially equal to the width dimension of the vehicle to complete the inflation. (For example, refer to Patent Document 1).
JP 2001-315599 A

  However, in the conventional pedestrian protection device, although it is possible to protect the interference with the vehicle at the time of the primary collision of the pedestrian with an airbag, in order to prevent the pedestrian from falling to the road surface side after the primary collision, There was room for improvement.

  The present invention solves the above-described problems, and provides a pedestrian protection device capable of protecting a pedestrian at the time of a primary collision and further capable of preventing a pedestrian from falling to the road surface after the primary collision. For the purpose.

The pedestrian protection device according to the present invention is a pedestrian protection device that is mounted on a vehicle, can protect a pedestrian at the time of a primary collision, and can prevent a pedestrian from falling to the road surface after the primary collision. There,
An airbag that is deployed and inflated from near the front bumper on the front side of the vehicle to above the height of the hood panel, has a width dimension substantially equal to the width dimension of the vehicle, and completes the inflation,
The airbag includes a plurality of locking holes that pass through in the front-rear direction when the inflation is completed and can lock the body part of the pedestrian.

  In the pedestrian protection device according to the present invention, when the airbag has been deployed and inflated, the width dimension is substantially equal to the width dimension of the vehicle from near the front bumper on the front side of the vehicle to above the height of the hood panel. Thus, since the airbag is disposed, the airbag can be protected by cushioning a pedestrian who tries to interfere with the vehicle at the time of the primary collision.

  And since the airbag which completed the expansion | deployment is penetrated in the front-back direction and is provided with the some locking hole which can lock a pedestrian's body part, a pedestrian's arm etc. If is inserted into the locking hole and locked, the pedestrian is prevented from falling to the road surface while being caught on the periphery of the locking hole, and is not damaged by the road surface.

  Therefore, the pedestrian protection device according to the present invention can protect the pedestrian at the time of the primary collision, and can also prevent the pedestrian from falling to the road surface after the primary collision.

  Then, it is desirable to form the airbag at the time of completion of deployment as a concave surface in which the front side is recessed toward the vehicle rear side.

  If comprised in this way, if a pedestrian is restrained by the front side of the airbag at the time of a primary collision, it will be easy to be guided to the more concave side of a concave surface, and a pedestrian's arm will be with respect to a locking hole. Or even if it is not locked in the locking hole at the beginning, it is easy to cause a situation of entering the locking hole. It can also be prevented.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this specification, the front-rear direction is based on the direction along the front-rear direction of the vehicle, and the left-right direction is the direction along the left-right direction when the front side is viewed from the rear side of the vehicle. And

  As shown in FIGS. 1 to 3, the pedestrian protection device S according to the embodiment includes an airbag 14 housed in a front bumper 4 on the front side of the vehicle V, and an inflator that supplies inflation gas to the airbag 14. 21, a case 25 that stores the airbag 14 and the inflator 21, and a cover member 28 that covers the stored airbag 14. Furthermore, in this protective device S, the inflator 21 is provided by predicting a primary collision with the pedestrian of the vehicle V by inputting a signal from the sensor 12 arranged on the front bumper 4 and the like and detecting a pedestrian. And a control device 11 for operating the device.

  In the case of the embodiment, the cover member 28 includes the upper wall portion 4a of the front bumper 4 and includes a door portion 29 that is pushed and opened when the airbag 14 is inflated (see FIG. 2). The door portion 29 is disposed at a lower position between the headlamps 7 and 7 of the vehicle V in the upper wall portion 4a, and is located near the boundary portion between the upper wall portion 4a and the front wall portion 4b of the bumper 4 so that the rotation center when opened is opened. A thin-walled hinge portion 30 is provided. The door portion 29 is configured to open to the front side of the vehicle V with the hinge portion 30 as a rotation center, and to break the connecting portion with the upper wall portion 4a at the left and right edges of the door portion 29 when opening. Yes.

  The case 25 is made of metal made of sheet metal or the like, and is formed in a substantially rectangular parallelepiped box shape having a substantially U-shaped cross section with an upper opening. The case 25 includes a flange portion 26 that extends downward. The case 25 fixes the flange portion 26 to the front side of the bumper reinforcement 3 on the vehicle body 1 side using bolts, nuts, and the like, so that the vehicle V extends along the reinforcement 3. It is mounted on. The case 25 is mounted on the vehicle V so that the opening 25a on the upper side is covered with the door portion 29 of the cover member 28 on the front bumper upper wall portion 4a. Further, the case 25 is disposed in the vicinity of the center of the vehicle V in the left-right direction so that the width in the left-right direction is slightly smaller than the distance between the left and right headlamps 7, 7 of the vehicle V (FIG. 1). 3). In addition, the member of the code | symbol 2 shown in FIG. 2 is the side member 2 which connected the reinforcement 3 to the front end.

  As described above, the operation of the inflator 21 is controlled by the control device 11, and, as shown in FIG. Are held by a plurality of mounting brackets 22. The inflator 21 is accommodated in the case 25 together with the airbag 14 by passing the bolts 22a of the respective brackets 22 through the airbag 14 and the case 25 and fixing the nuts 23 while being accommodated in the airbag 14. It is fixed.

  As shown in FIGS. 1 to 5, the airbag 14 is folded and stored in the case 25 with the inflator 21 stored therein. The airbag 14 is substantially in the form of a plate that expands and expands from the vicinity of the front bumper 4 on the front side of the vehicle V to the upper side exceeding the height of the hood panel 9 when the inflation is completed. It has an equal width dimension and is configured to complete the expansion into a substantially plate shape.

  The airbag 14 is formed as a bag formed of a flexible woven fabric such as polyester, and has an inflator 21 built in on the lower side when inflation is completed, and extends in the left-right direction above the front bumper 4. A plurality of vertical bar portions 16 for completing expansion so as to extend upward so as to be arranged side by side in the left-right direction are configured. Further, the upper ends of the vertical bar portions 16 are communicated with the upper connecting portion 18 extending in the left-right direction so as to be connected to each other. In the case of the embodiment, as shown in FIG. 5, the base portion 15 that has completed the expansion has a rear portion 15 a positioned above the front portion 9 a of the hood panel 9, and on the upper surface side of the front portion 9 a. It is configured to be supported.

  And each vertical bar | burr part 16 can form the concave surface 19 dented in the back side by the cross section of an up-down direction or a horizontal direction in the front side of the airbag 14 at the time of completion of inflation, as shown in FIGS. The film length in the horizontal direction is set so as to gradually decrease from the upper and lower end portions 16a and 16b toward the intermediate portion 16c in the vertical direction. Further, a gap h extending in the vertical direction by narrowing the horizontal opening width between the vertical bar portions 16 penetrates in the front-rear direction when the expansion is completed, and can engage the body part A of the pedestrian W. The film length in the horizontal direction of each vertical bar portion 16 is set so as to form the stop hole 17.

  In this pedestrian protection device S, when the control device 11 predicts a primary collision with the pedestrian W by a signal from the sensor 12 in a state where it is mounted on the vehicle V, the inflator 21 is operated, Since the inflation gas is discharged from the discharge port 21a, the air bag 14 pushes open the door portion 29 of the cover material 28 and protrudes upward from the opening 25a of the case 25 to be inflated.

  And in the pedestrian protection apparatus S of embodiment, as shown in FIGS. 4-6, if the airbag 14 completes expansion | deployment inflation, the height of the hood panel 9 from the front bumper 4 vicinity in the front side of the vehicle V will be shown. Since the airbag 14 has a width dimension substantially equal to the width dimension of the vehicle V and exceeds the upper limit, the pedestrian W who tries to interfere with the vehicle A at the time of the primary collision is cushioned. The airbag 14 can be protected.

  And the airbag 14 which completed the expansion | deployment is penetrated in the front-back direction, and is provided with the some locking hole 17 which can lock body parts, such as the arm W of the pedestrian W, and is comprised. From the above, if the arm A of the pedestrian W is inserted into the locking hole 17 and locked, the pedestrian W is prevented from falling to the road surface while being caught on the periphery of the locking hole 17, No damage from the road.

  Therefore, the pedestrian protection apparatus S of the embodiment can protect the pedestrian W at the time of the primary collision, and can further prevent the pedestrian W from falling to the road surface side after the primary collision.

  And in the case of embodiment, since the airbag 14 at the time of completion of expansion | deployment is formed as the concave surface 19 which makes the front side concave to the vehicle rear side, it is the front side of the airbag 14 at the time of a primary collision. Then, if the pedestrian W is restrained, it is easy to be guided to the concave side of the concave surface 19, and a part of the arm A or the like of the pedestrian W is deeply intruded into the locking hole 17, or initially, Even if it is not locked in the locking hole 17, it is easy to cause a situation of entering the locking hole 17, and it is possible to further prevent the pedestrian W from falling to the road surface side after the primary collision.

  In particular, in the airbag 14 of the embodiment, the lower portion 16b side and the base portion 15 of each vertical bar portion 16 at the time of completion of inflation are thickened in the front-rear direction so that the front side 9a side of the hood panel 9 is rear side The upper end portion 16a side of each vertical bar portion 16 is not easily tilted backward, and the upper end portions 16a are connected to each other by the upper connecting portion 18 so that the vertical bar portion 16 is not easily tilted in the left-right direction. The pedestrian W locked at the periphery of the stop hole 17 can be stably held in a state where the cushioning action is secured at each of the parts 15, 16, and 18 of the airbag 14. Of course, on the lower side of the airbag 14, the base portion 15 is thickened in the front-rear direction and is held on the front bumper 4. Falling is also prevented.

  In the embodiment, the airbag 14 to be deployed and inflated is projected upward from the upper wall 4a side of the front bumper 4. However, the front wall 4b of the front bumper 4 and the front side of the front grill 5 are shown. The air bag 14 may be disposed so as to protrude upward.

  Further, in the embodiment, the locking hole 17 for locking the body part such as the arm A of the pedestrian W is formed so as to provide a gap h extending in the vertical direction by narrowing the horizontal opening width, Although the case where it arranged in parallel in the left-right direction was shown, if the body part of the pedestrian W can be locked, the gap | interval which extends in the horizontal direction by narrowing the opening width of the up-down direction and forming in the up-down direction will be shown. It may be a hole. However, when the locking hole 17 is formed by narrowing the opening width in the horizontal direction and providing the gap h extending in the vertical direction as in the embodiment, the body part such as the locked arm W is attached to the hood. Since it is possible to move down to the base 15 arranged on the upper surface side of the panel 9 in a locked state, the degree of freedom of movement due to the pedestrian W falling down or its own weight is secured to some extent. The pedestrian W can be locked.

  Further, in the case of the embodiment, the case where the upper end portion 16a side of each vertical bar portion 16 is connected by the inflatable upper connecting portion 18 as the airbag 14 is shown. As long as 16a can be connected, the upper end side of the airbag 14 may be comprised by the connection cloth etc. which do not flow in the gas for inflation.

It is a perspective view of the vehicle carrying the pedestrian protection device of one embodiment concerning the present invention. It is a fragmentary longitudinal cross-sectional view of the vehicle carrying the pedestrian protection apparatus of the embodiment, and respond | corresponds to the II-II site | part of FIG. It is a schematic front view of the vehicle carrying the pedestrian protection apparatus of the embodiment. It is a perspective view of the vehicle which shows the time of the action | operation of the pedestrian protection apparatus of the embodiment. It is a fragmentary sectional view of the vehicle which shows the time of operation of the pedestrian protection device of the embodiment. It is an end view of the airbag at the time of the action | operation of the pedestrian protection apparatus of the embodiment, and respond | corresponds to the VI-VI site | part of FIG.

Explanation of symbols

4 ... Front bumper,
9 ... food panel,
14 ... Airbag,
17 ... locking hole,
19 ... concave,
V ... Vehicle,
W ... Pedestrian,
A ... (Body part) Arm,
S: Pedestrian protection device.

Claims (2)

A pedestrian protection device mounted on a vehicle, capable of protecting a pedestrian at the time of a primary collision, and further capable of preventing a pedestrian from falling to the road surface after the primary collision,
An airbag that is deployed and inflated from near the front bumper on the front side of the vehicle to above the height of the hood panel, has a width dimension substantially equal to the width dimension of the vehicle, and completes the inflation;
The pedestrian protection device according to claim 1, wherein the airbag includes a plurality of locking holes that pass through in the front-rear direction when the inflation is completed and can lock the body part of the pedestrian.   The pedestrian protection device according to claim 1, wherein the airbag at the time of completion of deployment and inflation is formed as a concave surface such that the front side is recessed toward the vehicle rear side.

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