JP4016740B2 - Pedestrian protection device for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  This invention protects and protects a pedestrian by tilting the pedestrian on the hood of the host vehicle by paying a leg below the pedestrian's knee when the host vehicle collides with the pedestrian. The present invention relates to a vehicle pedestrian protection device.
[0002]
[Prior art]
  Conventionally, as a pedestrian protection device for vehicles of the above-mentioned example, for example,,There exists an apparatus of Unexamined-Japanese-Patent No. 2000-255350.
  That is, a pedestrian collision prediction means for predicting a pedestrian collision in front of the host vehicle, a leg wiping member for paying a pedestrian's leg when the pedestrian collision prediction means predicts a pedestrian collision, Drive means such as an actuator for driving the member from a position behind the front bumper to a position ahead of the front bumper is provided.
[0003]
  Here, the collision prediction sensor as the above-described collision prediction means includes an ultrasonic sensor, a radar, or an image recognition camera (CCD camera), for example,,The distance to an object ahead (such as a pedestrian) is measured, and the possibility of collision is calculated numerically by calculating the distance between the vehicle and the predicted distance where the vehicle stops and brakes are applied, and the collision is predicted.
[0004]
  Also,On the vehicle body side, a collision detection sensor such as a G sensor or a pressure sensitive sensor capable of detecting a collision of an obstacle (such as a pedestrian) is provided.
  And according to this conventional apparatus, when a collision between the host vehicle and the pedestrian is predicted by the collision prediction sensor as the collision prediction means, the leg wiping member can be operated by the driving means.,When the occurrence of an actual collision is detected by the collision detection sensor, pedestrian protection means such as a hood airbag can be activated.
[0005]
  The tip part of the above-mentioned leg cleaning member (the part that actually pays the pedestrian's leg) is formed of a core material made of a pipe member, and when this leg cleaning member is activated, In order not to give as much impact as possible,It is preferable to provide an impact mitigating member for mitigating the impact to some extent on the outer peripheral side of the pipe member.
[0006]
  In this way, when the impact mitigating member is provided on the outer periphery of the pipe member of the leg washer member, if the collision detection sensor such as the G sensor for detecting the actual occurrence of the collision is provided on the vehicle body side, the host vehicle collides with the pedestrian. The point of impact is input indirectly via the leg-wiping member, and,Of the footAheadThere is a problem that the collision detection value is not accurately transmitted due to both of the fact that the end portion is provided with a member for reducing the impact.
[0007]
  That is, if the collision detection target is another vehicle, the detection value is originally a large value, but if the collision detection target is a pedestrian, the detection value itself is extremely small compared to that of the other vehicle. Since this is a value, the above-described problem occurs.
[0008]
[Problems to be solved by the invention]
  The present invention includes pedestrian collision detection means for detecting a pedestrian collision in front of the vehicle, and pedestrian protection means for protecting the pedestrian when the detection means detects a pedestrian collision, By providing the pedestrian collision detection means on the leg wiper member, it is possible to detect pedestrian collisions early and accurately regardless of the stiffness of the leg wiper member, and the appropriate pedestrian protection means can be operated. AndMoreover, by raising the detection threshold value of the first pedestrian collision detection means during driving of the leg wiping member, when the leg wiping member is operating from the rear of the bumper toward the front of the bumper, Increase the detection threshold in consideration of the fact that the relative speed is larger than when the member is stopped. ( Set to a higher value ) Thus, it is possible to prevent malfunction of the first pedestrian protection means based on erroneous collision detection during driving of the leg wiping member.It aims at provision of the pedestrian protection device for vehicles.
[0009]
[Means for Solving the Problems]
  A pedestrian protection device for a vehicle according to the present invention includes a pedestrian collision prediction means for predicting a collision of a pedestrian in front of the host vehicle, a leg wiping member that pays off a pedestrian's leg when a pedestrian collision is predicted, 1st pedestrian collision detection which detects a pedestrian collision in front of the own vehicle, comprising a driving means for driving a leg wiper member from a position behind the bumper to a position ahead of the bumper. Means and a first pedestrian protection means for protecting a pedestrian when a pedestrian collision is detected, and the first pedestrian collision detection means is provided on a leg wiping member.The detection threshold value of the first pedestrian collision detection means is raised during the driving of the leg wiping member.
[0010]
  The pedestrian collision predicting means having the above configuration may be constituted by a laser radar, a scan radar, a CCD camera, or the like, and the first pedestrian collision detecting means may be constituted by a G sensor or a pressure sensor. The pedestrian protection means may be constituted by a pedestrian upper body protection system such as a hood airbag or a hood hop-up mechanism (a mechanism for lifting the hood) or a pedestrian head protection system such as a wind airbag.
[0011]
  According to the above configuration, when the pedestrian collision predicting means predicts a collision between the host vehicle and the pedestrian, the driving means drives the leg wiper member from the bumper rear position to the bumper front position, and below the pedestrian's knee. Pay the side leg to tilt the pedestrian over the hood.
[0012]
  Also,The first pedestrian collision detection means provided on the leg wiping member detects an actual collision with the pedestrian at the time of pedestrian payment by the leg wiping member, and the first pedestrian collision detection means detects the pedestrian collision detection means. The first pedestrian protection means is activated by the output to protect the pedestrian leaning on the hood.
  As a result, a pedestrian collision can be detected at an early stage and with high accuracy regardless of the rigidity of the leg member, and an appropriate pedestrian protection means can be operated.
[0013]
  MoreoverThe detection threshold value of the first pedestrian collision detection means is raised during the driving of the above-mentioned leg wiping member.FromWhen the leg wiper is working from the back of the bumper to the front of the bumper,When the member is stopped,Increase the detection threshold (set it to a higher value) taking into account that the relative speed increases.soThe malfunction of the 1st pedestrian protection means based on the collision erroneous detection at the time of the drive of a leg payment member can be prevented.
[0014]
  In one embodiment of the present invention, the second pedestrian collision detection means is provided in the front part of the vehicle body, and the second pedestrian collision detection means and the second pedestrian collision detection means are operated by collision detection. The pedestrian protection means is provided.
  The second pedestrian collision detection means configured as described above is,The second pedestrian protection means may comprise a G sensor or a pressure sensor.,A wind airbag may be set.
[0015]
  The above configuration means that when both the first and second pedestrian collision detection means perform collision detection, the second pedestrian protection means is activated. In other words,When only the first pedestrian collision detection means detects a collision,It means that only the first pedestrian protection means operates and the second pedestrian protection means does not operate.
[0016]
  Thereby, it is possible to achieve both pedestrian protection and driver safety at an appropriate level. In particular,When the second pedestrian protection means is set to a wind airbag, the front view is narrowed when the wind airbag is deployed, so that the above configuration is effective.
[0017]
  In one embodiment of the present invention, the leg-pasting member includes a core material and an impact mitigating member provided outside the core material, and the first pedestrian collision detecting means includes the core material and the impact mitigating member. Between the two.
[0018]
  According to the above configuration, it is possible to accurately detect the collision of the pedestrian and appropriately actuate the pedestrian protection means while relaxing the impact on the leg of the pedestrian by the impact reducing member provided outside the core member. Can do.
【Example】
  An embodiment of the present invention will be described in detail with reference to the drawings.
  FIG. 1 shows a pedestrian protection device for a vehicle. In FIG. 1, a collision prediction sensor 2 constituting pedestrian collision prediction means is provided at a front portion of a vehicle (own vehicle) 1, and this collision prediction sensor 2 is a collision of a pedestrian. When you foresee,A leg wiping member 3 (so-called lower leg support) for paying a leg below the pedestrian's knee, a first collision detection sensor 4 as a first pedestrian collision detection means, and a second pedestrian collision detection means As a second collision detection sensor 5, as a first pedestrian protection means for protecting a pedestrian, a hood airbag 6 (shown in a deployed state in FIG. 1), and as a second pedestrian protection means A wind airbag 7 (shown in a deployed state in FIG. 1) and a CPU 10 as control means are provided.
[0019]
  The collision prediction sensor 2 described above,The collision prediction sensor 2 is configured by a laser radar, a scan radar, a CCD camera, or the like. The collision prediction sensor 2 measures a distance from a pedestrian in front of the host vehicle 1, and predicts that the measurement distance is stopped by applying the speed of the host vehicle 1 and braking. By calculating the distance, the possibility of collision is calculated numerically, and the collision is predicted.
[0020]
  The above-described leg cleaning member 3 is configured as shown in FIGS.
  That is, FIG. 2 is a side view showing a part of the front vehicle body structure. A bonnet reinforcement 13 is joined to a hood 12 that covers the engine room 11 so as to be openable and closable, while a front bumper 14 (for example, a resin) A front grill 15 is disposed between the bumper) and the front end of the bonnet 12.
[0021]
  A pair of left and right front side frames 16 and 16 are provided as vehicle body rigid members extending in the longitudinal direction of the vehicle, and a bumper reinforcement extending in the vehicle width direction is provided between the front end portions of the left and right front side frames 16 and 16. 17 is provided.
[0022]
  As shown in FIG. 3, a pair of brackets 18, 18 are attached to the front end portion of the front side frame 16 described above, and a support shaft 19 that serves as a pivotal fulcrum of the leg washer 3 is provided between the brackets 18, 18. Provided.
[0023]
  The left and right support shafts 19 and 19 are attached to both ends of the leg wiper member 3 via the arms 20 and 20 respectively, and further provided with a rotary actuator 21 as a driving means for driving one support shaft 19 to predict the collision. At this time, the rotary actuator 21 is configured to drive the leg wiper member 3 from the rear position of the front bumper 14 shown by the solid line in FIG. 2 to the front position of the front bumper 14 shown by the phantom line in FIG.
[0024]
  The cross-sectional structure of the above-described leg cleaning member 3 is configured as shown in FIGS.
  That is, the leg-pasting member 3 includes a core member 22 made of a metal pipe member such as an aluminum pipe, an impact reducing member 23 such as urethane covering the entire outer peripheral portion of the core member 22, and a skin surrounding the impact reducing member 23. The first collision detection sensor 4 is provided through a rigid base member 25 at the front side of the intermediate portion in the vehicle width direction of the core member 22. It is installed.
[0025]
  In short, the first collision detection sensor 4 described above is,This is provided between the core member 22 and the impact mitigating member 23 in the leg disposing member 3, and a harness 27 is connected to the connector 26.
[0026]
  As shown in FIG. 4, the above-described harness 27 is disposed in the inner space of the core member 22, and is connected to the power source side from the core member 22 through the arm 20.
  Here, the first collision detection sensor 4 and the second collision detection sensor 5 provided at the front of the vehicle body are configured by a G sensor or a pressure sensor.
[0027]
  When a pedestrian collision is detected,A hood airbag 6 as a first pedestrian protection means for protecting a pedestrian is configured as shown in FIG. In FIG. 6, for convenience of illustration, it is shown in an expanded state.
[0028]
  As shown in FIG. 6, the bumper reinforcement 17 is provided with an airbag storage portion 29 that is long in the vehicle width direction via a bracket 28, and an outer airbag 30 and an inner airbag 31 are stored in the storage portion 29. ing.
[0029]
  The inner airbag 31 is enclosed in the outer wear bag 30, and the inner airbag 31 is formed with a vent hole 32, while the outer airbag 30 is provided with a cloth bending resistance member 33 and a vent hole 34 is formed. ing.
[0030]
  Then, the hood airbag 6 receives the upper body of the pedestrian leaning on the hood 12 by the operation of the leg wiper member 3 in the state of the solid line in FIG. In accordance with the inclination of the pedestrian, it moves between the upper surface of the bonnet 12 and the pedestrian to protect the upper body of the pedestrian.
  Note that the inner airbag 31 and the outer airbag 30 described above are configured to be deployed at substantially the full width in the vehicle width direction at the front portion of the vehicle.
[0031]
  A wind airbag 7 as second pedestrian protection means that operates when both the first collision detection sensor 4 and the second collision detection sensor 5 detect a collision is configured as shown in FIGS. 7, 8, and 9. First, the vehicle body structure of the portion where the wind airbag 7 is provided will be described.
[0032]
  A cowl box 39 having a cowl upper panel 37 and a cowl lower panel 38 and having a closed cross-sectional structure extending in the vehicle width direction is provided on the upper portion of the dash lower panel 36 that partitions the engine room 11 and the vehicle interior 35. An inclined lower end portion of the front window glass 41 is supported on the cowl closed section 40.
[0033]
  A bonnet reinforcement 42 is joined to the lower rear end portion of the bonnet 12, and a gap 43 extending in the vehicle width direction is formed between the rear end portion of the bonnet 12 and the inclined lower end portion of the front window glass 41. Yes.
[0034]
  In the above-described wind airbag 7, a unit 45 having an inflator 44 is disposed in a recess 37 a provided in the cowl upper panel 37, and the bag body 46 deployed by the above-described inflator 44 is inflated through the above-described gap 43. Is configured to do.
[0035]
  That is, when gas is generated from the inflator 44, the bag body 46 of the wind airbag 7 is inflated and deployed through the gap 43 as shown in FIGS. 8 and 9 from the stored state shown in FIG. Finally, as shown in phantom lines in FIG. 1, an unfolding posture that covers the gap 43 and the left and right front pillars 47 is secured.
[0036]
  Here, as shown by the phantom line in FIG. 1, in the final deployed posture state, the middle main part of the windshield 41 is deployed so as not to be covered, so as to ensure the forward view of the driver as much as possible. It is configured.
  And this wind airbag 7 protects the head of the pedestrian who inclines on the bonnet 12 at the time of the expansion | deployment.
[0037]
  FIG. 10 shows a control circuit of the pedestrian protection device for vehicles, and the collision prediction sensor 2, the first and second collision detection sensors 4, 5 and the vehicle speed sensor 48 are connected to the input side of the CPU 10 as the control means. On the output side of the CPU 10, the leg cleaning member 3 is connected via the actuator 21, the hood airbag 6 (first pedestrian protection means) is connected via the inflator driver 49, and the wind airbag 7 is connected via the inflator driver 50. (Second pedestrian protection means) are connected to each other.
[0038]
  Based on various signal inputs from the collision prediction sensor 2, the first collision detection sensor 4, the second collision detection sensor 5, and the vehicle speed sensor 48, the CPU 10 executes the actuator 21 and the inflator drivers 49 and 50 according to the programs stored in the ROM 51. The actuator 21 causes the leg washer 3 to move forward toward the leg of the pedestrian, and each inflator driver 49, 50 is a bag 31, 30 or bag of the corresponding airbag 6, 7 via the inflator. The main body 46 is expanded. Further, the RAM 52 stores data corresponding to detection threshold values G1 and G2 (threshold values for deploying the hood airbag 6) of the first collision detection sensor 4.
[0039]
  Here, the detection threshold values G1 and G2 are set to the threshold value G1 (where G1 <G2) when the leg-pasting member 3 is not driven, and when the leg-pasting member 3 is being driven, The threshold value G2 (where G1> G2) is set. That is, when the leg wiper member 3 is operating forward, the relative speed increases compared to when it is stopped, so the threshold G2 is set to a slightly higher value and the leg wiper member 3 is activated. This prevents false detection of a collision inside.
[0040]
  The operation of the thus constructed vehicle pedestrian protection apparatus will be described in detail below with reference to the flowchart shown in FIG.
  In step S1 (reading means), the CPU 10 reads signals from the sensors 2, 4, 5, 48, and in the next step S2 (determination means), the CPU 10 determines that the current vehicle speed V is a threshold value V0 (for example, about 10 km). / H) It is determined whether or not, and when NO is determined, the process returns to step S1, while when YES is determined as V <V0, the process proceeds to the next step S3.
[0041]
  In this step S3 (collision prediction determining means), the CPU 10 determines whether or not a collision between the host vehicle 1 and a pedestrian ahead of the host vehicle 1 is predicted based on a signal input from the collision prediction sensor 2, and a NO determination is made. Sometimes, the process returns to step S1, while when YES is determined that a collision has been predicted, the process proceeds to the next step S4.
[0042]
  In step 4 described above, the CPU 10 operates the leg cleaning member 3 via the actuator 21, and in the next step S5 (determination means), the CPU 10 determines whether or not the leg cleaning member 3 is operating.
  If NO is determined in step S5 described above, the process proceeds to the next step S6, and if YES is determined, the process proceeds to another step S7 (threshold changing means).
[0043]
  In step S6 described above, the CPU 10 sets the detection threshold value of the first collision detection sensor 4 to G1 (where G1 <G2) in response to the fact that the leg-pasting member 3 is not in operation, while step S7 described above. In (threshold value changing means), the CPU 10 sets the detection threshold value of the first collision detection sensor 4 to G2 (where G2> G1) in response to the operation of the leg wiper member 3.
[0044]
  In the next step S8 (collision determination means) or step S9 (collision determination means), the CPU 10 determines whether or not the collision load G actually detected by the first collision detection sensor 4 is G> G1 or G> G2. When NO is determined, the process skips to step S12. When YES is determined, the process proceeds to the next step S10.
[0045]
  In step S10 described above, the CPU 10 operates the hood airbag 6 via the inflator driver 49 in response to G> G1 or G> G2.
  In the next step S11, the CPU 10 determines whether or not the second collision detection sensor 5 provided at the front of the vehicle body has detected a collision. If NO is determined, the process proceeds to step S12. If YES is determined, the process proceeds to another step S13. To do.
[0046]
  In step S13, the CPU 10 activates the wind airbag 7 via the inflator driver 50 in response to the first and second collision detection sensors 4 and 5 both detecting a collision.
[0047]
  On the other hand, in the above-described step S12, the CPU 10 determines whether or not a predetermined time set in advance has elapsed. When the determination is NO, the CPU 10 returns to step S5 and repeats the flowchart, while when the determination is YES, the process proceeds to the next step S14. To do.
[0048]
  In step S14, the CPU 10 stores the leg disposing member 3 via the actuator 21, and then ends the series of processes or returns to step S1. Note that each step of the flowchart shown in FIG. 11 constitutes a means corresponding to the processing content.
[0049]
  As described above, the vehicle pedestrian protection apparatus according to the embodiment shown in FIGS. 1 to 11 includes a pedestrian collision prediction means (see collision prediction sensor 2) for predicting a collision of a pedestrian in front of the host vehicle, A leg wiping member 3 for paying a pedestrian's legs when a collision is predicted, and driving means (see the actuator 21) for driving the leg wiping member 3 from a position behind the front bumper 14 to a position ahead of the front bumper 14. A first pedestrian collision detection means (refer to the first collision detection sensor 4) for detecting a collision of a pedestrian in front of the host vehicle, and walking when a pedestrian collision is detected. Provided with a first pedestrian protection means (see the hood airbag 6) for protecting the pedestrian, and the first pedestrian collision detection means (see the first collision detection sensor 4) is provided on the leg wiper member 3 It is.
[0050]
  According to this configuration, when the pedestrian collision prediction means (see the collision prediction sensor 2) predicts a collision between the host vehicle 1 and the pedestrian, the drive means (see the actuator 21) causes the leg washer member 3 to be located behind the front bumper 14. It drives from a position to the front bumper 14 front position, and a leg part below a pedestrian's knee is paid, and a pedestrian is tilted on the bonnet 12. FIG.
[0051]
  Also,When the pedestrian of the pedestrian by the leg wiping member 3, the first pedestrian collision detection means (see the first collision detection sensor 4) provided on the leg wiping member 3 detects an actual collision with the pedestrian, The first pedestrian protection means (see the hood airbag 6) is actuated by the detection output of the first pedestrian collision detection means (see the first collision detection sensor 4), and the pedestrian leaning on the hood 12 is detected. Protect.
  As a result, it is possible to detect a pedestrian collision at an early stage and with high accuracy regardless of the rigidity of the leg-pasting member 3, and it is possible to operate an appropriate pedestrian protection means (the hood airbag 6 in this embodiment). It becomes.
[0052]
  Further, during the driving of the leg wiping member 3, the detection threshold value of the first pedestrian collision detection means (see the first collision detection sensor 4) is increased from G1 to G2.
  According to this configuration, in consideration of the fact that the relative speed becomes larger when the leg wiper member 3 is operating from the rear of the front bumper 14 toward the front of the front bumper 14 than when the member 3 is stopped. By raising the detection threshold value to G2 (setting it to a high value), malfunction of the first pedestrian protection means (see the hood airbag 6) based on erroneous collision detection when the leg wiper member 3 is driven. Can be prevented.
[0053]
  Furthermore, a second pedestrian collision detection means (see the second collision detection sensor 5) is provided at the front of the vehicle body, and the first pedestrian collision detection means (see the first collision detection sensor 4) and the second pedestrian are provided. There is provided second pedestrian protection means (see window airbag 7) which is activated by collision detection means (see second collision detection sensor 5).
  In this configuration, when both the first and second pedestrian collision detection means (see the collision detection sensors 4 and 5) detect the collision, the second pedestrian protection means (see the wind airbag 7) is used. Means to operate. In other words, when only the first pedestrian collision detection means (see the first collision detection sensor 4) detects a collision, only the first pedestrian protection means (see the hood airbag 6) operates, and the second This means that the pedestrian protection means (see the wind airbag 7) is not activated.
[0054]
  This ensures both pedestrian protection and driver safety at an appropriate level.
Can. In particular, when the wind airbag 7 is used as the second pedestrian protection means, the front view is narrowed when the wind airbag 7 is deployed, and thus the above configuration is effective.
[0055]
  In addition, the leg-pasting member 3 includes a core member 22 and an impact mitigating member 23 provided outside the core member 22, and the first pedestrian collision detection means (see the first collision detection sensor 4) includes It is provided between the core material 22 and the impact relaxation member 23.
[0056]
  According to this configuration, the impact mitigating member 23 provided outside the core member 22 is used to mitigate the impact on the legs of the pedestrian, while accurately detecting the pedestrian's collision and appropriately pedestrian protection means ( The hood airbag 6 can be activated.
[0057]
  FIG. 12 shows another embodiment of the pedestrian protection device for vehicles. The first collision detection sensor 4 provided between the core member 22 and the impact relaxation member 23 in the leg wiping member 3 is arranged in the longitudinal direction of the leg wiping member 3. A plurality of the first collision detection sensors 4... Are electrically connected in parallel with each other at a predetermined interval in the direction, that is, the vehicle width direction.
[0058]
  If comprised in this way, even if the pedestrian's leg-pasting position by the leg-pasting member 3 has shifted | deviated to the vehicle width direction, a collision can be detected appropriately by any 1st collision detection sensor 4. FIG.
[0059]
  Also in the embodiment shown in FIG. 12, the other configurations, operations, and effects are the same as those in the previous embodiment. Therefore, in FIG. Is omitted.
[0060]
  FIG. 13 shows still another embodiment of the vehicle pedestrian protection device. In the previous embodiment, the leg washer 3 is rotated by the rotary actuator 21 to drive from the front bumper rear position to the front bumper front position. In this embodiment shown in FIG. 13, a reciprocating actuator 53 such as a hydraulic cylinder is provided below the front side frame 16, and the piston rod of the actuator 53 and the leg wiper member 3 are connected to the connecting member 54. The above-described reciprocating actuator 53 linearly drives the leg-pasting member 3 from the rear position of the front bumper 14 shown by the solid line in FIG. 13 to the front position of the front bumper 14 shown by the phantom line in FIG. It is structured as much as possible.
  Even if configured in this manner, the same operations and effects as in the previous embodiment can be obtained. Therefore, in FIG. 13, the same parts as those in the previous figure are denoted by the same reference numerals, and detailed description thereof is omitted.
[0061]
  FIG. 14 shows still another embodiment of the pedestrian protection device for vehicles. A link 55 that can be rotated with the support shaft 19 as a fulcrum is provided. In addition, a hydraulic cylinder 57 as an actuator (driving means) is stretched between the intermediate portion of the link 55 and the support shaft 56 provided on the front side frame 16, and the link is driven by the hydraulic cylinder 57. The leg wiper member 3 is configured to be moved through 55 from a rear position of the front bumper 14 shown by a solid line in FIG. 14 to a front position of the front bumper 14 shown by an imaginary line in FIG.
[0062]
  When configured in this way,A small hydraulic cylinder 57 can be used for the actuator 53 of FIG.
  Also in the embodiment shown in FIG. 14, the other configurations, operations, and effects are almost the same as those in the previous embodiment. Therefore, the same parts in FIG. Is omitted.
[0063]
  In addition, it can replace with the hood airbag 6 shown in FIG. 6, and can also employ | adopt the bonnet lifting mechanism disclosed by Unexamined-Japanese-Patent No. 2000-211153 as a pedestrian protection means.
[0064]
  In the correspondence between the configuration of the present invention and the above-described embodiment,
  The pedestrian collision prediction means of the present invention corresponds to the collision prediction sensor 2 of the embodiment,
  Similarly,
  The driving means corresponds to the actuators 21 and 53 or the hydraulic cylinder 57, and
  The first pedestrian collision detection means corresponds to the first collision detection sensor 4,
  The second pedestrian collision detection means corresponds to the second collision detection sensor 5,
  The first pedestrian protection means corresponds to the hood airbag 6,
  The second pedestrian protection means corresponds to the wind airbag 7,
  The bumper corresponds to the front bumper 14,
  The present invention is not limited to the configuration of the above-described embodiment.
[0065]
【The invention's effect】
  According to this invention, the pedestrian collision detection means for detecting the collision of the pedestrian in front of the host vehicle, and the pedestrian protection means for protecting the pedestrian when the detection means detects the collision of the pedestrian, Furthermore, since the above pedestrian collision detection means is provided on the leg wiping member, it is possible to detect pedestrian collision early and accurately regardless of the rigidity of the leg wiping member, and the proper operation of the pedestrian protection means. Has the effect of enablingIn addition, since the detection threshold value of the first pedestrian collision detection means is raised during the driving of the above-mentioned leg wiping member, when the leg wiping member is operating from the rear of the bumper toward the front of the bumper. , Raise the detection threshold in consideration of the fact that the relative speed increases when the member is stopped ( Set to a higher value ) Thus, there is an effect that it is possible to prevent malfunction of the first pedestrian protection means based on erroneous collision detection during driving of the leg wiping member.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a pedestrian protection device for a vehicle according to the present invention.
FIG. 2 is a side view showing an arrangement structure of leg-paying members.
FIG. 3 is a perspective view of the main part of FIG. 2;
FIG. 4 is a front view showing a leg wiping member in cross section.
5 is a cross-sectional view taken along line AA in FIG.
FIG. 6 is an explanatory diagram of a hood airbag.
FIG. 7 is a side view showing a wind airbag arrangement structure.
FIG. 8 is a side view showing an initial deployment state of the wind airbag.
FIG. 9 is a side view showing a halfway state of deployment of the wind airbag.
FIG. 10 is a control circuit block diagram.
FIG. 11 is a flowchart showing control of pedestrian protection means.
FIG. 12 is a perspective view showing another embodiment of the pedestrian protection device for vehicles.
FIG. 13 is a side view showing still another embodiment of the pedestrian protection device for vehicles.
FIG. 14 is a side view showing still another embodiment of the pedestrian protection device for vehicles.
[Explanation of symbols]
  2 ... Collision prediction sensor (pedestrian collision prediction means)
  3 ... Leg-wiping member
  4 ... 1st collision detection sensor (1st pedestrian collision detection means)
  5. Second collision detection sensor (second pedestrian collision detection means)
  6. Food airbag (first pedestrian protection means)
  7 ... Wind airbag (second pedestrian protection)
  14 ... Front bumper (bumper)
  21, 53 ... Actuator (drive means)
  22 Core material
  23 ... Impact mitigating member
  57 ... Hydraulic cylinder (drive means)

Claims (3)

Pedestrian collision prediction means for predicting a collision of a pedestrian in front of the vehicle,
A leg wiping member that pays off the pedestrian's leg when predicting a pedestrian collision;
A vehicle pedestrian protection device comprising driving means for driving the leg-pasting member from a position behind the bumper to a position ahead of the bumper,
First pedestrian collision detection means for detecting a pedestrian collision in front of the vehicle;
Providing a first pedestrian protection means for protecting a pedestrian when a pedestrian collision is detected;
The first pedestrian collision detection means is provided on a leg wiping member ,
The vehicle pedestrian protection apparatus increases the detection threshold value of the first pedestrian collision detection means during driving of the leg wiping member . A second pedestrian collision detection means is provided at the front of the vehicle body,
The vehicle pedestrian protection device according to claim 1, further comprising second pedestrian protection means that is activated by collision detection of the first pedestrian collision detection means and the second pedestrian collision detection means . The leg-pasting member includes a core material, and an impact relaxation member provided outside the core material,
The vehicle pedestrian protection apparatus according to claim 1 or 2, wherein the first pedestrian collision detection means is provided between the core member and an impact mitigation member .

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