JP2009166545A - Pedestrian protection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pedestrian protection device surely holding a pedestrian colliding with a vehicle and suppressing injury caused by a collision with a road and the catch-in of the pedestrian into a vehicle. <P>SOLUTION: This pedestrian protection device 1 is provided with an air bag 14 and an air bag cutoff device 15. When a pedestrian collides with a vehicle 100, the air bag 14 is inflated over a hood 102. The air bag 14 has an adhesive member 140 at the other side of the hood 102. Therefore, the pedestrian colliding with the vehicle is held by the adhesive power of the adhesive member 140. After that, the air bag 14 holding the pedestrian is cut off from the vehicle 100 by the air bag cutoff device 15. By this, the field of view of a driver and can be secured and the injury caused by traveling with the vehicle 100 with the pedestrian in a state that the pedestrian is held at the vehicle 100 can be suppressed. Then, the pedestrian is held by the air bag 14 so that even if the air bag is cut off from the vehicle 100, the injury caused by the collision with a road surface and the catch-in into the vehicle 100 can be suppressed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pedestrian protection apparatus including an airbag that holds a pedestrian that has collided with a vehicle.

Conventionally, as a pedestrian protection device provided with an airbag that holds a pedestrian that has collided with a vehicle, for example, there is a pedestrian protection device disclosed in Patent Document 1. This pedestrian protection device includes a pedestrian holding airbag and a pedestrian movement device. The pedestrian moving device is installed in the front part of the vehicle. The pedestrian holding airbag is installed in the pedestrian moving device. When the collision of the vehicle with the pedestrian is predicted, the pedestrian holding airbag is deployed to hold the pedestrian. And a pedestrian movement apparatus moves the pedestrian holding | maintenance airbag holding the pedestrian to the vehicle side. Thereby, the injury of the pedestrian accompanying the secondary collision to a vehicle or a road surface fall can be reduced.
JP 2007-216933 A

However, in the pedestrian protection device described above, a pedestrian is held by being wrapped in a pedestrian holding airbag. Therefore, it is difficult to obtain a sufficient holding force. Therefore, when moving to the side of the vehicle, the held pedestrian may rub through the pedestrian protection airbag and may be injured by collision with the road surface or being caught in the vehicle.

  The present invention has been made in view of such circumstances, and a pedestrian protection device capable of reliably holding a pedestrian that has collided with a vehicle and suppressing injury caused by a collision with a road surface or being caught in the vehicle. The purpose is to provide.

Means for Solving the Problems and Effects of the Invention

  Therefore, as a result of extensive research and trial and error to solve this problem, the present inventor has reliably provided a pedestrian that has collided with the vehicle by providing an adhesive means on the surface opposite to the vehicle body of the airbag. The present inventors have come up with the idea that it is possible to suppress damage caused by collision with a road surface or being caught in a vehicle.

  That is, the pedestrian protection device according to claim 1 is a pedestrian protection device that includes an airbag that is deployed on the surface of the vehicle body and holds a pedestrian that has collided with the vehicle. It has an adhesive means. According to this structure, the pedestrian who collided with the vehicle can be reliably held by the adhesive force of the adhesive means provided in the airbag. Therefore, it is possible to suppress damage caused by a collision with a road surface or being caught in a pedestrian's vehicle that has collided with the vehicle.

  A pedestrian protection apparatus according to a second aspect is the pedestrian protection apparatus according to the first aspect, further comprising an airbag separating means for separating the airbag from the vehicle. According to this structure, the pedestrian who collided with the vehicle can be separated from the vehicle while being held by the airbag. Therefore, it is possible to secure the field of view of the driver of the vehicle and to prevent damage caused by traveling with the vehicle while being held by the vehicle. At this time, since the pedestrian who collided with the vehicle is in a state of being held by the airbag, even if the pedestrian is separated from the vehicle, the collision with the road surface and the injury caused by being caught in the vehicle are suppressed.

  The pedestrian protection apparatus according to claim 3 is the pedestrian protection apparatus according to claim 2, wherein the airbag disconnecting means disconnects the airbag after a lapse of a predetermined time since the pedestrian collides with the vehicle. Features. According to this configuration, the airbag can be separated after the pedestrian that has collided with the vehicle is securely held by the airbag.

  The pedestrian protection device according to claim 4 is the pedestrian protection device according to any one of claims 1 to 3, wherein the adhesive means is made of a material that generates an adhesive force by touching air. It is characterized in that it is housed in the housing part in an airtight state before deployment. According to this configuration, the adhesive force of the adhesive means can be reliably generated after the airbag is deployed.

  The pedestrian protection device according to claim 5 is the pedestrian protection device according to any one of claims 1 to 3, wherein the adhesive means is made of a material that generates adhesive force by touching water. It has water supply means for supplying water to the surface of the airbag opposite to the vehicle body when deployed. According to this configuration, the adhesive force of the adhesive means can be reliably generated after the airbag is deployed.

  A pedestrian protection device according to a sixth aspect is the pedestrian protection device according to any one of the first to fifth aspects, wherein the airbag is deployed on a front hood or a rear hood. According to this configuration, when a pedestrian collides with the front or rear part of the vehicle, the pedestrian falls over the front or rear hood. Therefore, the pedestrian can be reliably held by deploying the airbag on the hood.

  Next, an embodiment is given and this invention is demonstrated in detail.

  First, the configuration of the pedestrian protection device will be described with reference to FIG. Here, FIG. 1 is a schematic plan view relating to the overall configuration of the pedestrian protection apparatus in the present embodiment. FIG. 2 is a schematic plan view relating to the overall configuration in a state where the airbag is deployed. FIG. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is an explanatory diagram for explaining the configuration of the airbag separating device.

  A pedestrian protection device 1 shown in FIG. 1 is a device that protects a pedestrian that has collided with the vehicle 100. More specifically, the device protects a pedestrian who collides with the bumper 101 at the front of the vehicle 100 and falls on the hood 102. The pedestrian protection device 1 includes a pedestrian collision detection device 10, a pedestrian protection control device 11, airbag deployment devices 12 and 13, an airbag 14, and airbag disconnecting devices 15 and 16 (airbag disconnecting means). It consists of and.

  The pedestrian collision detection device 10 is a device that detects a pedestrian collision with the bumper 101, and is disposed around the bumper 101.

  The pedestrian protection control device 11 outputs a deployment command signal for deploying the airbag 14 and a disconnect command signal for disconnecting the airbag 14 from the vehicle 100 based on the detection result of the pedestrian collision detection device 10. It is a device to do. The separation command signal is output after a predetermined time has elapsed since the deployment command signal was output. The pedestrian protection control device 11 is disposed at the center of the vehicle 100.

  The airbag deployment devices 12 and 13 are devices that generate gas based on a deployment command signal output from the pedestrian protection control device 11 and deploy the airbag 14. The airbag deployment devices 12 and 13 are disposed around the front pillar via the airbag disconnecting devices 15 and 16, and are connected to the pedestrian protection control device 11.

  The airbag 14 is a device that holds a pedestrian that has been deployed on the hood 102 by the airbag deployment devices 12 and 13 and collided with the bumper 101. As shown in FIG. 2, when the airbag 14 is deployed, as shown in FIG. 3, the surface of the airbag 14 on the side opposite to the hood 102, which is a surface on which a pedestrian who has fallen on the hood 102 comes into contact, The adhesive member 140 (adhesive means) is formed in layers. The adhesive member 140 is made of an adhesive material that generates an adhesive force capable of holding a person by touching air. In addition, a strap 141 having a predetermined dimension for connecting the surfaces of the hood 102 side and the anti-hood 102 side is provided inside the airbag 14 in order to ensure a shape when deployed. As shown in FIG. 1, the airbag 14 is folded before being deployed and kept in an airtight state in a housing portion (not shown) around the front pillar and connected to the airbag deployment devices 12 and 13. Has been.

  The airbag disconnecting devices 15 and 16 are devices that disconnect the airbag 14 holding the pedestrian from the vehicle 100 based on the disconnection command signal output from the pedestrian protection control device 11. As shown in FIG. 4, the airbag disconnecting device 15 includes a fixing member 150 and a fixing device 151.

  The fixing member 150 is a member for fixing the airbag deployment device 12 to the vehicle. The fixing member 150 is provided with a through hole 150a. The fixing member 150 is fixed around the front pillar.

  The fixing device 151 is a device that fixes the airbag deployment device 12 to the fixing member and disconnects the airbag developing device 12 from the fixing member 150 based on the disconnection command signal. The fixing device 151 includes a slidable fixing pin 151a. The fixing device 151 is fixed around the front pillar in a state in which the fixing pin 151a is inserted through the through hole 120 provided in the airbag deployment device 12 and the through hole 150a of the fixing member 150, and the pedestrian protection control device 11 is connected.

  The airbag separating device 16 has the same configuration.

  Next, the operation of the pedestrian protection device will be described with reference to FIGS. Here, FIG. 5 is an explanatory diagram for explaining the operation of the airbag disconnecting device. FIG. 6 is an explanatory diagram for explaining the state of a pedestrian who has collided with the vehicle.

  In FIG. 1, when a pedestrian collides with the bumper 101, the pedestrian collision detection device 10 detects a pedestrian collision. The pedestrian protection control device 11 determines a pedestrian collision based on the detection result of the pedestrian collision detection device 10. Then, based on the determination result, a deployment command signal for deploying the airbag 14 is output.

  The airbag deployment devices 12 and 13 generate gas based on the deployment command signal output from the pedestrian protection control device 11, and deploy the airbag 14 as shown in FIG. The adhesive member 140 formed on the airbag 14 shown in FIG. 3 generates an adhesive force by touching the air when the airbag 14 is deployed. As shown in FIG. 6A, the pedestrian 17 collides with the bumper 101 and falls on the hood 102 and is held by the adhesive force of the adhesive material 140 formed on the airbag 14. Therefore, it is possible to suppress damage caused by a collision with the road surface or being caught in the vehicle 100.

  Thereafter, the pedestrian protection control device 11 shown in FIG. 2 outputs a disconnection command signal for disconnecting the airbag 14 from the vehicle 100 after a predetermined time has elapsed since the deployment command signal was output. The airbag disconnecting devices 15 and 16 disconnect the airbag 14 holding the pedestrian from the vehicle 100 based on the disconnection command signal output from the pedestrian protection control device 11. Specifically, as shown in FIG. 5, the airbag 14 is separated from the vehicle 100 by sliding the fixing pin 151 a of the fixing device 151 and releasing it from the through holes 120 and 150 a. As shown in FIG. 6B, the pedestrian 17 is disconnected from the vehicle 100 while being held by the airbag 14. Therefore, it is possible to secure the field of view of the driver of the vehicle and to prevent damage caused by traveling with the vehicle 100 while being held by the vehicle 100.

  Finally, the effect will be described. According to the present embodiment, when a pedestrian collides with the vehicle 100, the airbag 14 is deployed. An adhesive member 140 is formed on the surface of the airbag 14 on the side opposite to the hood 102. Therefore, the airbag 14 can reliably hold a pedestrian that has collided with the vehicle 100 by the adhesive force of the adhesive member 140. Therefore, the collision with the road surface of the pedestrian who collided with the vehicle 100 and the injury caused by being caught in the vehicle 100 can be suppressed.

  Further, according to the present embodiment, the airbag disconnecting devices 15 and 16 that disconnect the airbag 14 from the vehicle 100 are provided. Therefore, the pedestrian who collided with the vehicle 100 can be separated from the vehicle 100 while being held by the airbag 14. Therefore, it is possible to secure the field of view of the driver of the vehicle and to prevent damage caused by traveling with the vehicle 100 while being held by the vehicle 100. At this time, since the pedestrian who collided with the vehicle 100 is in a state of being held by the airbag 14, even if the pedestrian is separated from the vehicle 100, collision with the road surface or injury caused by being caught in the vehicle 100 can be suppressed.

  Further, according to the present embodiment, the airbag disconnecting devices 15 and 16 reliably hold the pedestrian after the pedestrian collides with the vehicle 100 based on the disconnection command signal output from the pedestrian protection control device 11. After a certain period of time has elapsed, the airbag 14 is disconnected from the vehicle 100. Therefore, the airbag 14 can be separated while the pedestrian that has collided with the vehicle 100 is securely held by the airbag 14. Note that safety can be further improved if the airbag 14 is separated in consideration of the vehicle speed at the time of the collision.

  Furthermore, according to the present embodiment, the adhesive member 140 is made of an adhesive material that generates an adhesive force by touching air. The airbag 14 is accommodated in an accommodating portion around the front pillar in a state of being folded and kept airtight before deployment. The adhesive member 140 touches the air when the airbag 14 is deployed, and generates an adhesive force. Therefore, the adhesive force of the adhesive member 140 can be reliably generated after the airbag 14 is deployed.

  In addition, according to the present embodiment, the airbag 14 is deployed on the hood 102 at the front portion of the vehicle 100. If a pedestrian collides with the bumper 101 at the front of the vehicle 100, the pedestrian falls on the hood 102 at the front of the vehicle 100. Therefore, a pedestrian can be held reliably.

  In the present embodiment, an example is described in which the adhesive member 140 is formed of an adhesive material that generates an adhesive force that can hold a person by touching the air, but is not limited thereto. For example, you may be comprised with the adhesive material which generate | occur | produces the adhesive force which can hold | maintain a person by touching water. In this case, the same effect can be obtained by providing a water supply device (water supply means) for supplying water to the surface on the side opposite to the hood where the adhesive member is formed when the airbag is deployed.

  In the present embodiment, an example in which the airbag 14 is deployed on the hood 101 at the front portion of the vehicle 100 is described, but the present invention is not limited to this. You may make it expand | deploy on the hood of a vehicle rear part. In this case, it is possible to protect a pedestrian who has collided with the vehicle moving backward.

It is a typical top view about the whole pedestrian protection device composition in this embodiment. It is a schematic top view regarding the whole structure in the state which the airbag developed. It is AA arrow sectional drawing in FIG. It is explanatory drawing for demonstrating the structure of an airbag separation apparatus. It is explanatory drawing for demonstrating operation | movement of an airbag separation apparatus. It is explanatory drawing for demonstrating the state of the pedestrian who collided with the vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Pedestrian protection apparatus, 10 ... Pedestrian collision detection apparatus, 11 ... Pedestrian protection control apparatus, 12, 13 ... Air bag deployment apparatus, 120 ... Through-hole, 14 ... -Airbag, 140 ... Adhesive member (adhesive means), 141 ... Strap, 15, 16 ... Airbag disconnecting device (airbag disconnecting means), 150 ... Fixing member, 150a ... Penetrating Hole, 151 ... Fixing device, 151a ... Fixing pin, 17 ... Pedestrian, 100 ... Vehicle, 101 ... Bumper, 102 ... Hood

Claims (6)

In a pedestrian protection device equipped with an airbag that deploys on the surface of a vehicle body and holds a pedestrian that has collided with the vehicle,
The pedestrian protection device according to claim 1, wherein the airbag has an adhesive means on the surface opposite to the vehicle body.   The pedestrian protection device according to claim 1, further comprising an airbag separating means for separating the airbag from the vehicle.   The pedestrian protection device according to claim 2, wherein the airbag disconnecting means disconnects the airbag after a lapse of a certain time since the pedestrian collides with the vehicle. The adhesive means is made of a material that generates an adhesive force by touching air,
The pedestrian protection device according to any one of claims 1 to 3, wherein the airbag is housed in the housing portion in a state of being kept airtight before deployment. The adhesive means is made of a material that generates adhesive force by touching water,
The pedestrian protection device according to any one of claims 1 to 3, further comprising water supply means for supplying water to a surface of the airbag opposite to the vehicle body when the airbag is deployed.   The pedestrian protection device according to any one of claims 1 to 5, wherein the airbag is deployed on a front hood or a rear hood.