JP4487869B2 - Pedestrian protection device - Google Patents

Description

  The present invention relates to a pedestrian protection device capable of protecting a pedestrian with a hood panel that is provided with a flip-up mechanism on a hood panel of a vehicle and is flipped upward during operation.

Conventionally, in the pedestrian protection apparatus having the above-described configuration, the rear end side of the hood panel is moved upward by a flip-up mechanism disposed on the lower side of the hood panel, and a member such as an engine disposed in the engine room When the pedestrian interferes with the vehicle and interferes with the hood panel by increasing the separation distance from the hood panel, the hood panel is plastically deformed so as to be recessed downward, so that the pedestrian engine and other members It was the structure which prevented interference and absorbed the kinetic energy of a pedestrian (for example, refer patent document 1).
JP-A-9-315266

  However, since the conventional pedestrian protection device has a configuration in which only the rear end side of the hood panel is flipped upward, a rigid engine or the like located in the vicinity of the intermediate portion in the front-rear direction away from the rear end of the hood panel. In order to ensure the amount of plastic deformation of the hood panel without interfering with the members, it is necessary to greatly raise the rear end side part upward, and after the operation of the flip-up mechanism, the rear end of the hood panel that is flipped up There was a fear that the driver's view could not be secured due to the side portion.

  The present invention solves the above-described problem, and can ensure the driver's field of view even after the flip-up mechanism is activated, and can smoothly protect the pedestrian by the hood panel that is flipped up. An object is to provide a pedestrian protection device.

A pedestrian protection device according to the present invention is a sheet metal hood panel disposed so as to cover the upper part of the engine room disposed on the front end side of the vehicle body,
The hood panel is moved upward and supported when a contact with the pedestrian of the vehicle is detected so that the kinetic energy of the pedestrian can be absorbed by plastic deformation so as to be recessed downward when the hood panel interferes with the pedestrian. A flip-up mechanism,
A pedestrian protection device comprising:
The flip-up mechanism is configured to be able to flip up the hood panel by providing a push-up portion at the rear end side of the hood panel and the vicinity of the center in the front-rear direction during operation.
After operation, the push-up amount on the rear end side is set so that the driver's field of view can be secured ,
The push-up portion near the center is arranged on both the left and right edges of the hood panel and is operated using a mechanism separate from the push-up portion on the rear end side. Further, it is configured to increase the push-up amount .

  In the pedestrian protection device of the present invention, the push-up amount of the push-up portion disposed on the rear end side of the hood panel is set so that the driver's field of view can be secured even after the flip-up mechanism is activated. Therefore, the driver's field of view can be sufficiently secured after the operation. Further, in the pedestrian protection device of the present invention, the flip-up mechanism has a push-up portion that can push up the portion near the center in the front-rear direction of the hood panel, so that not only the vicinity of the rear end of the hood panel but also the front and rear The part near the center of the direction is also flipped upward, and the hood panel can be moved upward over a wide area in the front-rear direction. Therefore, even if a pedestrian that interferes with the vehicle interferes with an intermediate portion in the front-rear direction of the hood panel, the kinetic energy of the pedestrian can be absorbed by plastically deforming the intermediate portion. it can. Therefore, it can suppress that a hard member, such as an engine arrange | positioned in an engine room, and a pedestrian interfere, and a pedestrian can be smoothly protected by a hood panel.

  Therefore, in the pedestrian protection apparatus of the present invention, the driver's field of view can be secured even after the flip-up mechanism is activated, and the pedestrian can be smoothly protected by the hood panel that is flipped up.

Further, the pedestrian protection apparatus of the present invention, the flip-up mechanism, upon actuation, the push-up portion near the center so as to increase the uplift from pushing portion of the rear side, since it constitutes a central side portion The amount of deformation can be secured, the pedestrian can be protected more accurately, and the rear end side portion can be prevented from jumping high, so that the driver's field of view is also good. Can be secured.

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

  As shown in FIGS. 1 and 2, the pedestrian protection device S1 of the first embodiment includes a hood panel 8 of a vehicle V and a flip-up mechanism 20 disposed on the lower side of the hood panel 8. Yes. In the vehicle V, as shown in FIGS. 1 and 2, a sensor 4 capable of detecting a collision with a pedestrian is disposed on the front bumper 3, and when the sensor 4 detects a collision with a pedestrian, An operation circuit (not shown) is configured to be able to operate the flip-up mechanism 20.

  The hood panel 8 is disposed so as to cover the upper part of the engine room 6 in the vehicle V, and is attached to the body 1 of the vehicle V using the hinge 12 at a position near the rear end 8a on both sides in the left-right direction. On the other hand, it is connected so that it can be opened and closed by front opening. In the case of the embodiment, the hood panel 8 includes an outer panel 9 and an inner panel 10 that are both made of sheet metal. In the case of the embodiment, the hood panel 8 is made of aluminum (made of aluminum alloy).

  As shown in FIGS. 3 and 4, each hinge 12 includes a shaft support portion 13 disposed at a lower surface side portion of the inner panel 9 at the rear end 8a of the hood panel, and a body side member 15 disposed on the body 1 side. And a rod-like pin 14 that rotatably connects the shaft support portion 13 and the body side member 15. The shaft support portion 13 has a substantially disc shape, is formed so as to protrude downward from the lower surface side portion of the inner panel 9, and includes an insertion hole 13 a through which the pin 14 is inserted near the center.

  The body side member 15 includes a rod-like main body portion 16 and an outer cylinder portion 17 that is externally mounted on the main body portion 16 so that the main body portion 16 can be slid, and whose lower end side is fixed to the body 1 side. ing. A substantially disc-shaped head portion 16 a having an insertion hole 16 b through which the pin 14 is inserted is arranged on the upper end side of the main body portion 16. When the vehicle body is mounted, the body portion 16 is held in the vicinity of the upper end of the outer cylinder portion 17 in the vicinity of the head portion 16a and is restricted from moving upward, and will be described later when the flip-up mechanism 20 is operated. When the push-up portion 21B pushes up the rear end side portion 8a of the hood panel 8, the connection state with the outer cylinder portion 17 is released and the upper portion 21B is configured to be slidable upward with respect to the outer cylinder portion 17. Yes.

  As shown in FIG. 2, the flip-up mechanism 20 is disposed on the left and right edges 8 c and 8 d of the hood panel 8 substantially along the front-rear direction. In the case of the embodiment, as shown in FIG. 6, the flip-up mechanism 20 is surrounded by the front fender panel 2 and the hood panel 8 on the body 1 side, which is the lower side of the left and right side edge portions 8 c and 8 d of the hood panel 8. The gap SP is disposed at a portion SP.

  In the embodiment, each flip-up mechanism 20 includes two front and rear push-up portions 21 (21A and 21B) disposed on the rear end 8a side of the hood panel 8 and a portion 8b near the center in the front-rear direction, And a drive mechanism 26 that operates the push-up unit 21.

  In the case of the embodiment, each push-up portion 21 is a substantially inverted L-shaped plate-like link, and is disposed substantially along the front-rear direction, with the axial direction along the left-right direction near the center. A pin 23 is used to be connected to the front fender panel 2 on the body 1 side so as to be rotatable along the front-rear direction. And each push-up part 21 is arrange | positioned so that the upper end 21a side may be located in the lower surface side vicinity of the hood panel 8, the upper end 21a side is located back, and the lower end 21b side is located ahead. Are inclined. In addition, each push-up portion 21 is connected to a pulling member 27 described later of the drive mechanism 26 in the vicinity of the lower end 21b.

  The drive mechanism 26 includes a traction member 27 disposed substantially along the front-rear direction, and an actuator 28 disposed near the rear end 8a of the hood panel and behind the push-up portion 21B disposed on the rear side. , Is composed of. The actuator 28 operates to pull the towing member 27 backward by inputting an operation signal from an operation circuit (not shown) when the sensor 4 disposed on the front bumper 3 detects a collision with a pedestrian. It is supposed to be configured. In the case of the embodiment, the actuator 28 includes a winding means that can drive a predetermined drive motor to wind the traction material 27. In the case of the embodiment, the traction member 27 is composed of a wire and is connected to the vicinity of the lower end 21b of each push-up portion 21 using the attachment member 24. The traction member 27 is pulled backward when the actuator 28 is operated. Thus, the vicinity of the lower end 21b of each push-up portion 21 is configured to be movable backward.

  In the vehicle V of the embodiment, the front end portion 8e of the hood panel 8 can be released by a predetermined locking member so that the hood panel 8 can be opened for inspection of the engine room 6 or the like. It is latched by the side and is the structure latched by the body 1 side at the time of flip-up. As shown in FIG. 5, each push-up portion 21 has the pin 23 positioned so that the upper end 21 a (a stopper pin 22 described later) is positioned immediately above the pin 23 that is the center of rotation, as shown in FIG. 5. Rotating as the center of rotation, the part on the upper end 21a side that rotates and moves upward, while pushing up the lower surface side of the rear end side part 8a and the central part 8b in the hood panel 8, The rear end side portion 8a and the central side portion 8b of the hood panel 8 are plastically deformed at the front side of the front push-up portion 21A, and the rear portion of the push-up portion 21A is moved upward. , Will jump up.

  In the pedestrian protection device S1 according to the embodiment, the push-up portions 21A and 21B disposed in the front and rear are made to have the same shape of plate-like links and have the same turning radius, so that the amount of the hood panel 8 that is flipped up is also increased. It will be set the same. The amount L1 (see FIG. 5) of the hood panel 8 that is pushed up by the push-up portions 21A and 21B can be sufficiently plastic when the hood panel 8 interferes with a pedestrian and the driver's field of view can be sufficiently secured after the hood panel 8 is raised. And it is set so that kinetic energy of a pedestrian can be absorbed. That is, the amount L1 of the hood panel 8 that is flipped up is a hard member such as the engine E that is disposed on the lower side of the hood panel 8 when the hood panel 8 that is flipped up is plastically deformed by interference with a pedestrian. It is set to a dimension that can prevent bottoming out. In a normal vehicle, the distance between the hood panel 8 and the engine E when the hood panel 8 is closed is set to about 30 to 50 mm, and the hood can absorb collision energy generated at the time of pedestrian interference. In order to ensure the plastic deformation amount of the panel 8, it is preferable to set the distance between the hood panel 8 and the engine E to 80 mm or more. In the case of the embodiment, the flip-up amount L1 of the hood panel 8 is set to about 50 mm.

  Further, on the upper end 21a side of each push-up portion 21, there is a stopper pin 22 that prevents the push-up portion 21 that has moved the upper end 21a upward after the drive mechanism 26 is operated so that the upper end 21a is further rotated forward. The hood panel 8 is provided with a locking portion 11 that can lock the stopper pin 22. The stopper pin 22 is formed so as to protrude from each push-up portion 21 toward the inside of the hood panel 8, and is disposed on the neck portion 22a disposed substantially along the left-right direction, and on the distal end side of the neck portion 22a. And a head portion 22b. The locking part 11 has a substantially inverted U-shaped cross section in the front-rear direction, and is configured to include a groove part 11a that is closed at the front end side and is provided to penetrate in the left-right direction. And the latching | locking part 11 is comprised so that the neck part 22a of the stopper pin 22 can be penetrated in the site | part of the groove part 11a. The head portion 22 b of the stopper pin 22 is disposed so as to protrude from the locking portion 11 to the inside of the hood panel 8.

  The locking portion 11 is configured by notching the rear edge side portion on the lower end side so that the neck portion 22a of the stopper pin 22 is not inserted into the groove portion 11a before the drive mechanism 26 is actuated. That is, before the drive mechanism 26 is operated, the stopper pin 22 is not locked to the locking portion 11, which causes any trouble in the opening / closing operation of the hood panel 8 during inspection in the engine room 6. Is configured so that there is no. Then, when the drive mechanism 26 is activated and the lower end side portion 21b of each push-up portion 21 is pulled by the pulling material 27 and moved rearward, the neck portion 22a of the stopper pin 22 enters the groove portion 11a, and When the push-up portion 21 completes the movement to push up the hood panel 8, the push-up portion 21 comes into contact with the front end portion 11b of the locking portion 11. Since the neck portion 22a of the stopper pin 22 is further prevented from moving forward by the front end side portion 11b of the locking portion 11, the presser portion 21 is further rotated so that the upper end 21a is directed forward. Can be prevented. As a result, even if a pedestrian interferes with the hood panel 8 that has been flipped up, the hood panel 8 is prevented from moving downward, so that the kinetic energy at the time of pedestrian interference is reliably absorbed. The part near the center in the left-right direction that interferes with the person can be plastically deformed, and the hood panel 8 can protect the pedestrian accurately. Note that the rearward rotation of the upper end 21a of the push-up portion 21 is prevented because the traction material 27 is pulled.

  In the pedestrian protection device S1 of the embodiment, when the sensor 4 disposed in the front bumper 3 detects a collision with a pedestrian, an operation signal from an operation circuit (not shown) is input to each actuator 28, The pulling member 27 is pulled rearward, the push-up portions 21A and 21B rotate around the pin 23, and the upper end 21a side portion displaced upwardly causes the rear end side portion 8a on the left and right edges of the hood panel 8. Then, the part 8b near the center in the front-rear direction is pushed up so as to be pushed upward.

  In the pedestrian protection apparatus S1 according to the embodiment, the amount by which the push-up portion 21B is disposed on the hood panel rear end 8a side so that the driver's field of view can be secured even after the flip-up mechanism 20 is actuated. Therefore, the driver's field of view can be sufficiently secured after the operation. Further, in the pedestrian protection device S1 of the embodiment, the flip-up mechanism 20 includes the push-up portion 21A that can push up the portion 8b near the center of the hood panel 8 in the front-rear direction. Not only the vicinity of 8a but also the part 8b near the center in the front-rear direction is flipped upward, and the hood panel 8 can be moved upward over a wide area in the front-rear direction. Therefore, even if a pedestrian who interferes with the vehicle interferes with an intermediate portion of the hood panel 8 in the front-rear direction, the intermediate portion, particularly the area near the center in the left-right direction, is greatly depressed downward. Thus, the kinetic energy of the pedestrian can be absorbed by plastic deformation. Therefore, it can suppress that a pedestrian interferes with hard members, such as the engine E arrange | positioned in the engine room 6, and can protect a pedestrian smoothly.

  Therefore, in the pedestrian protection apparatus S1 of the embodiment, the driver's field of view can be secured even after the flip-up mechanism 20 is operated, and the pedestrian is smoothly protected by the hood panel 8 that is flipped up. Can do.

  Moreover, in pedestrian protection apparatus S1 of embodiment, the raising parts 21A * 21B comprised from the same plate-shaped link are used as the raising mechanism 20. FIG. That is, in the pedestrian protection device S1 of the embodiment, since the two push-up portions 21A and 21B are operated using links, the push-up portions are compared with the case where the push-up portions are operated using different mechanisms. Thus, the mechanism can be simplified, which is preferable. In addition, in pedestrian protection apparatus S1 of embodiment, although it is the structure which operates the flip-up mechanism 20 arrange | positioned at the both right and left edge side of the hood panel 8 using another actuator 28, respectively, it shows in FIG. In this way, the flip-up mechanisms 20 and 20 disposed on both the left and right edges are disposed near the center in the left-right direction of the vehicle using a plurality of pulleys 29 around which a pulling material 27 made of a wire is wound. It is good also as a structure operated using two actuators 28A.

  Next, pedestrian protection apparatus S2 of 2nd Embodiment is demonstrated. In the pedestrian protection apparatus S2 of the second embodiment, the flip-up mechanism 31 that flips up the hood panel 8 is provided at the cowl 34 between the hood panel 8 and the front windshield W, as shown in FIGS. An airbag device 32 having an airbag 43 as a push-up portion that can be pushed up to push up the rear end 8a of the hood panel when deployed and inflated, and a portion 8b near the center of the hood panel 8 in the front-rear direction. And a push-up mechanism 46 as a push-up portion.

  The cowl 34 includes a sheet metal cowl panel 35 that is a member on the body 1 side, and a synthetic resin cowl louver 36 disposed above the cowl panel 35. The airbag device 32 includes: The cowl louver 36 is disposed on the lower side. As shown in FIG. 9, the airbag device 32 includes an airbag 43, an inflator 41 that supplies inflation gas to the airbag 43, a case 38 that houses the folded airbag 43 and the inflator 41, and a folded The airbag cover 40 that covers the airbag 43 is provided.

  The case 38 is made of sheet metal, has a substantially box shape with the upper side opened, and is fixed to the cowl panel 35 using a bracket 39. And in the airbag apparatus 32 of embodiment, the airbag cover 40 which covers the opening 38a of case 38 is comprised integrally with the cowl louver 36, and the structure provided with the door part 40a which can be opened at the time of expansion | deployment of an airbag, Has been.

  The airbag 43 is inflated by inflating the inflation gas discharged from the inflator 41. In the case of the embodiment, the airbag 43 is formed into a bag shape formed from a woven fabric using polyester, polyamide yarn, or the like. Yes. In the case of the embodiment, as shown in FIG. 8, the airbag 43 has a substantially U shape that is wide in the left-right direction when viewed from the front side, as shown in FIG. 8. The horizontal expansion portion 43a is provided, and the vertical expansion portions 43b and 43b extending from the left and right ends of the horizontal expansion portion 43a to the rear side so as to cover the lower front side of the front pillar FP. The lateral inflating portion 43a is configured to cover the upper portion of the cowl 34 over substantially the entire region in the left-right direction when the inflation of the airbag 43 is completed, and substantially covers the rear end 8a of the hood panel in the left-right direction during deployment. It will be pushed upward over the entire area. The push-up amount (bounce amount) L2 (see FIG. 9) of the rear end 8a of the hood panel by the laterally inflating part 43a of the airbag 43 can sufficiently secure the driver's field of view after the hood panel 8 is raised, and the hood When the panel 8 interferes with the pedestrian, it is set so as to prevent the pedestrian from interfering with a member such as the engine E positioned below the hood panel 8 due to plastic deformation. In the case of the embodiment, the rear end side portion 8a of the hood panel 8 is flipped up by about 50 to 150 mm by the lateral inflating portion 43a of the airbag 43 that is deployed and inflated. In the pedestrian protection device S2 of the embodiment, the laterally inflated portion 43a of the airbag 43 that has been inflated is disposed so as to cover the upper side of the cowl 34. Of course, the laterally inflated portion 43a is disposed. Even so, the driver's field of view can be sufficiently secured.

  Further, the hinge 12 disposed on the rear end 8a side of the hood panel 8 includes a stopper 16c disposed so as to protrude from the peripheral surface of the main body 16 as shown in parentheses in FIG. An elongated hole-shaped locking hole portion 17a is formed in the cylindrical portion 17 along the vertical direction. The locking hole portion 17a is configured to be able to be inserted through the stopper 16c. The stopper 16c is locked to the peripheral edge of the upper end side of the locking hole portion 17a when the rear end 8a of the hood panel is pushed upward as the airbag 43 is inflated and the main body portion 16 moves upward. The portion 16 and the hood panel 8 are disposed to prevent the portion 16 and the hood panel 8 from being greatly pushed upward. Specifically, the stopper 16c and the locking hole portion 17a prevent the rear end 8a of the hood panel 8 from being pushed up to a height that hinders the driver's view by the laterally inflating portion 43a of the inflating airbag 43. Therefore, the locking hole portion 17a is set to have a vertical dimension that can secure the amount L2 of the hood panel rear end 8a.

  The rear end side portion 8a of the hood panel 8 pushed up as the airbag 43 is inflated is held at the lower side by the laterally inflated portion 43a of the airbag 43, and the rear end of the hood panel that is flipped up. Even if the pedestrian interferes with the vicinity of 8a, the hood panel 8 can be plastically deformed so as to reliably absorb the kinetic energy at the time of the pedestrian interference by suppressing the downward movement of the hood panel 8. 8 can protect a pedestrian accurately.

  The inflator 41 that supplies the inflation gas to the airbag 43 is inflated by inputting an operation signal from an operation circuit (not shown) when the sensor 4 disposed in the front bumper 3 detects a collision with a pedestrian. It is comprised so that a use gas can be discharged. In the embodiment, the inflator 41 is fixed to the case 38 together with the airbag 43 using the bracket 42 (see FIG. 10).

  As shown in FIG. 9, the push-up mechanism disposed in the portion 8 b near the center in the front-rear direction of the hood panel 8 is disposed in the portions 8 c and 8 d on the left and right edges of the hood panel 8. 11, the front fender panel 2 and the hood panel 8 on the body 1 side, which are the lower side of the left and right edge portions 8c and 8d of the hood panel 8, as shown in FIG. Are disposed in a space SP surrounded by.

  The push-up mechanism 46 includes a multistage piston, and includes a hydraulic cylinder 47 as an actuator and a rod 48 that can be pushed up by the cylinder 47. A substantially disc-shaped main body portion 48a is disposed at the upper end of the rod 48, and the central portion 8b of the hood panel can be pushed upward by the main body portion 48a during driving. Further, as shown in FIG. 8, the push-up mechanism 46 has a push-up amount that is higher than the jump amount L2 of the air bag 43 of the air bag device 32 so that the central portion 8b is positioned above the rear end side portion 8a. (Bounce amount) L3 (see FIG. 11) is made large. In the case of the embodiment, the central portion 8 b is flipped up by about 20 to 80 mm by the push-up mechanism 46. The driving means (not shown) for driving the push-up mechanism 46 is operated by inputting an operation signal from an operation circuit (not shown) when the sensor 4 disposed on the front bumper 3 detects a collision with a pedestrian. It is configured to do so. Further, the push-up mechanism 46 of the embodiment is configured to include a stopper (not shown) that holds the position of the protruding rod 48 after operation. That is, since the downward movement of the rod 48 that protrudes upward is prevented by the stopper, the hood panel 8 can be moved even if a pedestrian interferes with the vicinity of the hood panel central portion 8b that is flipped up. It is possible to suppress the downward movement and plastically deform so as to surely absorb the kinetic energy at the time of pedestrian interference, and the hood panel 8 can protect the pedestrian accurately.

  In the pedestrian protection device S2 of the embodiment, when the sensor 4 disposed in the front bumper 3 detects a collision with a pedestrian, an operation signal from an operation circuit (not shown) is input to the inflator 41, and the inflator 41 The inflation gas is discharged from the air bag, the airbag 43 is expanded and inflated as shown by the two-dot chain line in FIGS. 8 and 9, and the rear end 8a of the hood panel 8 is pushed up by the expanded laterally inflated portion 43a. At the same time, the operating mechanism is input to the cylinder 46 that drives the push-up mechanism 46, the rod 48 protrudes upward, and the body portion 48a pushes the portion 8b near the center of the hood panel 8 upward. A rear end side portion 8a on both left and right edge sides and a portion 8b near the center in the front-rear direction are flipped up so as to be pushed upward. It becomes a.

  And also in pedestrian protection apparatus S2 of embodiment, the push-up part (airbag) arrange | positioned at the hood panel rear-end 8a side so that a driver | operator's visual field can be ensured also after the raising mechanism 31 act | operates. Since the push-up amount of the hood panel rear end 8a by the device 32) is set, the driver's field of view can be sufficiently secured after the operation. Also in the pedestrian protection device S2 of the embodiment, the flip-up mechanism 31 includes the push-up mechanism 46 as a push-up portion that can push up the portion 8b near the center of the hood panel 8 in the front-rear direction. Not only the vicinity of the rear end a of the panel 8 but also the portion 8b near the center in the front-rear direction is flipped upward, and the hood panel 8 can be moved upward over a wide area in the front-rear direction. . Therefore, even if a pedestrian who interferes with the vehicle interferes with an intermediate portion of the hood panel 8 in the front-rear direction, the intermediate portion, particularly the area near the center in the left-right direction, is greatly depressed downward. Thus, the kinetic energy of the pedestrian can be absorbed by plastic deformation. Therefore, it can suppress that a pedestrian interferes with hard members, such as the engine E arrange | positioned in the engine room 6, and can protect a pedestrian smoothly.

  Therefore, also in the pedestrian protection apparatus S2 of the embodiment, the driver's field of view can be secured even after the flip-up mechanism 31 is operated, and the hood panel 8 that is flipped up can be used to smoothly protect the pedestrian. be able to.

  Further, in the pedestrian protection device S2 of the embodiment, the airbag 43 of the airbag device 32 is used as the push-up portion disposed on the rear end 8a side of the hood panel 8, and the airbag that has been inflated is completed. 43 is disposed so as to cover the upper side of the cowl 43 and the lower front surface of the front pillar FP, so that a pedestrian may interfere with the wiper disposed on the cowl 43 or the front pillar FP. Can be prevented. In the embodiment, the airbag device 32 is disposed in the cowl 43, but the position of the airbag device is not limited to this. For example, the airbag device 32 is disposed on the rear end side of the hood panel. As a configuration in which the bag device is disposed, a rear end of the hood panel can be pushed up by an inflating airbag.

  Further, in the pedestrian protection device S2 of the embodiment, the push-up mechanism 46 is configured to increase the push-up amount of the hood panel 8 from the airbag device 32 when the flip-up mechanism 31 is operated. The center side part 8b of the food panel 8 can be flipped up higher than the rear end side part 8a (see the two-dot chain line in FIG. 8). Therefore, the pedestrian can be protected more accurately and the rear end side portion 8a can be prevented from jumping high, so that the driver's field of view can be ensured well.

  In the pedestrian protection apparatus S1 of the first embodiment, the flip-up mechanism 20 is arranged at two locations on the left and right edges 8c and 8d side of the hood panel 8. It is good also as a structure arrange | positioned only at one place near the center of the left-right direction of a panel. Of course, in the configuration of the pedestrian protection device S2 of the second embodiment, the push-up mechanism 46 disposed at two places on the left and right edges 8c and 8d side of the hood panel 8 is provided at one place near the center in the left-right direction of the hood panel. It is good also as a structure arrange | positioned only to. However, from the standpoint of reliably pushing up the hood panel 8 over a wide range and preventing the push-up member 21 constituting the flip-up mechanism 20 and the main body 48a of the push-up mechanism 46 from inadvertently interfering with a pedestrian. The hood panel 8 is preferably configured to be pushed upward at the left and right edges 8c and 8d.

  In the embodiment, a drive motor or a cylinder is used as the actuator, but the usable actuator is not limited to this, and of course, a solenoid or a mechanical spring may be used as the actuator. .

It is a side view of the vehicle carrying the pedestrian protection device which is 1st Embodiment of this invention. It is a top view of the vehicle carrying the pedestrian protection apparatus of the embodiment. It is the schematic which shows the connection state of the food | hood panel and body side in the pedestrian protection apparatus of the embodiment. It is a schematic sectional drawing which shows the connection state of the food | hood panel and body side in the pedestrian protection apparatus of the embodiment, and respond | corresponds to the IV-IV site | part of FIG. It is a schematic sectional drawing which shows the flip-up mechanism in the pedestrian protection apparatus of the embodiment. It is a schematic sectional drawing which shows the raising mechanism in the pedestrian protection apparatus of the embodiment, and respond | corresponds to the VI-VI site | part of FIG. It is a top view of the vehicle carrying the pedestrian protection apparatus which is a modification of the embodiment. It is a side view of the vehicle carrying the pedestrian protection apparatus which is 2nd Embodiment of this invention. It is a top view of the vehicle carrying the pedestrian protection apparatus of the embodiment. It is a schematic sectional drawing which shows the airbag apparatus used for the pedestrian protection apparatus of the embodiment, and respond | corresponds to the XX site | part of FIG. It is a schematic sectional drawing which shows the raising member used for the pedestrian protection apparatus of the embodiment, and respond | corresponds to the XI-XI site | part of FIG.

Explanation of symbols

1 ... Body
6 ... Engine room
8 ... Food panel,
8a ... rear end,
8b ... central part,
20.31 ... Bounce mechanism,
21 ... Pusher,
26: Drive mechanism,
32. Airbag device,
43. Airbag (push-up part),
46: Push-up mechanism (push-up part),
E ... Engine,
V ... Vehicle,
S1, S2 ... Pedestrian protection device.

Claims (1)

A sheet metal hood panel arranged to cover the upper part of the engine room arranged on the front end side of the vehicle body;
When the contact with the pedestrian of the vehicle is detected, the hood panel is moved upward so that the kinetic energy of the pedestrian can be absorbed by plastic deformation so as to be recessed downward when the hood panel interferes with the pedestrian. A flip-up mechanism to support,
A pedestrian protection device comprising:
The flip-up mechanism is configured to provide a push-up portion at the rear end side of the hood panel and the vicinity of the center in the front-rear direction during operation, so that the hood panel can be flipped upward,
After operation, the push-up amount on the rear end side is set so that the driver's field of view can be secured ,
The push-up portion near the center is disposed on both the left and right edge sides of the hood panel, and is configured to be operated using a mechanism different from the push-up portion on the rear end side. A pedestrian protection device , wherein the push-up amount is larger than the push-up portion .

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