JP2003081052A - Hood structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce bending moment generating at a leg part of a passenger when a front part of a front bumper abuts on the leg part of the passenger. SOLUTION: A pre-collision detecting sensor 14 is arranged on a vehicle body of an automobile 10, and a control device 18 operates a rear part moving device 26 and a front part moving device 28 arranged on a rear part 24A and a front part 24B of the hood 24 on the basis of a signal from the pre-collision detecting sensor 14. The rear part moving device 26 and the front part moving device 28 eliminate a distance difference in a longitudinal direction of the vehicle between the front part 24B of the hood 24 and a front part 20A of the front bumper 20 when the front part 20A of the front bumper 20 abuts on the leg part 16A of the passenger 16 by moving the hood 24 to a slant front upper side of the vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile hood structure, and more particularly to an automobile hood structure having hood moving means for moving the hood to a position that effectively absorbs impact energy during a collision.

[0002]

2. Description of the Related Art Conventionally, an example of a vehicle hood structure having a hood moving means for moving a hood to a position where it effectively absorbs impact energy at the time of a collision is disclosed in Japanese Patent Laid-Open No. 20001-1949.

As shown in FIG. 18, in the hood structure of this automobile, a flip-up mechanism 102 for flipping up the rear part 100A of the hood 100 and a pedestrian collision detection for detecting a collision with a pedestrian or the like in advance or after the fact. A control device 106 that receives a signal from the sensor 104 and determines whether or not the hood 100 is to be flipped up is provided. The flip-up mechanism 102
A pair of left and right rear shafts 108 provided on the rear portion 100A of the hood 100 and a pair of left and right front shafts 1 provided on the hood ridge reinforcement 110 located below the hood.
And a pair of left and right link members 114 that connect the two are provided, and the front shaft portion 112 is positioned in front of the rear shaft portion 108 in the vehicle. Further, the front part 100B of the hood 100 has a hood moving mechanism 118 that is connected to a radiator core support member 116 extending in the vehicle width direction and moves the hood 100 forward.

[0004]

However, in the hood structure of this automobile, as shown by the chain double-dashed line in FIG. 18, the front portion 100B of the hood 100 has the front bumper even when the hood 100 is moved forward. It is located at a distance S from the front end 120A of 120 toward the rear of the vehicle.
As a result, when the front end 120A of the front bumper 120 comes into contact with the leg portion of the pedestrian, the upper portion of the leg portion has the hood 1
00 to the front part 100B side. Therefore, a bending moment is generated in the legs of the pedestrian.

In view of the above facts, the present invention has an object to obtain an automobile hood structure capable of reducing a bending moment generated in a leg of a pedestrian when the front bumper comes into contact with the leg of the pedestrian. is there.

[0006]

According to the present invention as set forth in claim 1, when the detection means detects the possibility of collision with a collision body, the hood is moved to a position where the impact energy is effectively absorbed. In a hood structure for an automobile having means, the position of the front part of the hood moves to a position above the front end of the front bumper.

Therefore, when the possibility of collision with the collision body is detected by the detecting means, the hood is moved by the hood moving means, and the position of the front part of the hood becomes the position above the front end of the front bumper. As a result, it is possible to eliminate the difference in the vehicle front-rear direction distance between the front portion of the hood and the front end of the front bumper. Therefore, when the front bumper comes into contact with the pedestrian's leg, substantially at the same time, the front part of the hood comes into contact with the upper part of the leg, so that the bending moment generated in the pedestrian's leg can be reduced. Further, since the front portion of the hood is separated from the front portion of the vehicle body such as the grill, the front portion of the hood can be easily deformed and the energy absorption performance is improved.

According to a second aspect of the present invention, in the hood structure for an automobile according to the first aspect, the hood moving means comprises:
The hood is moved diagonally forward and upward of the vehicle.

Therefore, in addition to the contents of the first aspect, when the hood is moved by the hood moving means and the position of the front part of the hood is located above the front end of the front bumper, the entire hood is diagonally forward of the vehicle. Move up. As a result, the hood can be kept away from the skeleton member of the vehicle body, the engine, etc., so that the deformation stroke of the hood is increased and the energy absorption performance is improved.

According to a third aspect of the present invention, in the hood structure for an automobile according to any one of the first and second aspects, there is provided an airbag device arranged at a lower rear portion of the hood, When the collision is detected, the airbag device is activated.

Therefore, in addition to the contents described in claims 1 and 2, when the collision with the collision object is detected, the hood moving means is operated to move the hood forward. For this reason,
In a vehicle equipped with a so-called full-concealed wiper device that covers the wiper with the rear part of the hood, even when the airbag bag body of the airbag device disposed behind the hood is deployed, the airbag bag body is the rear part of the hood. Harder to interfere with
Easy to deploy.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of an automobile hood structure according to the present invention will be described with reference to FIGS.

In the figure, an arrow FR indicates a vehicle front direction, and an arrow UP indicates a vehicle upward direction.

As shown in FIG. 1, in the present embodiment, a pre-collision detection sensor 14 including a millimeter wave radar, a CCD camera, etc. is arranged in the vicinity of the inner mirror 12 of the vehicle body 10, and A pedestrian 16 approaching 10 and a collision object such as a collision object can be detected. The pre-collision detection sensor 14 is connected to the control device 18, and the control device 18 determines whether or not the vehicle body 10 is likely to collide with the pedestrian 16 or a collision body based on the input signal from the pre-collision detection sensor 14. It is designed to judge whether or not.

A collision detection sensor 22 is arranged near the surface of the front bumper 20. The collision detection sensor 22 is connected to the control device 18, and the collision detection sensor 22 detects the contact of the pedestrian 16 or the like.

The control device 18 combines the output signal from the pre-collision detection sensor 14 with a vehicle speed signal, for example, a signal that the vehicle is traveling at a predetermined speed (eg, 20 km / h) or more. When it is determined that it is the pre-collision detection during traveling, an electric current is supplied to the rear moving device 26 and the front moving device 28 as the hood moving means for moving the hood 24 covering the engine room. .

As shown in FIG. 2, a motor 30 constituting a part of the rear moving device 26 is fixed to an apron upper member 34 as a vehicle body frame member by a bolt 36 and a nut 38 via a bracket 32. Further, one end 40A of an L-shaped link 40 forming a part of the rear movement device 26 is connected to the output shaft 30A of the motor 30, which is the vehicle upper rear part with respect to the output shaft 30A of the motor 30. At the other end 40B of the link 40, the left and right hinge arms 42 attached to the rear portion 24A of the hood 24 (see FIG.
(Only the left side of the vehicle is shown) is rotatably connected in the vertical direction by a pin 43.

Therefore, the link 40 can be moved between the normal use position shown in FIG. 2 and the raised position shown in FIG. 3 by the rotation of the motor 30, and the movement of the link 40 causes the link 40 to move.
The rear portion 24A of the hood 24 moves to the normal use position shown in FIG. 2 and the raised position shown in FIG. The position of the pin 43 in the raised position shown in FIG. 3 is on the diagonally upper front side of the vehicle with respect to the position of the pin 43 in the normal use position shown in FIG.

As shown in FIG. 4, the motor 44 forming a part of the front moving device 28 includes a radiator support 47.
The output shaft 44A of the motor 44 is connected to one end 50A of a link 50 that constitutes a part of the front moving device 28.
A rear portion 46 of the hood lock 46 is provided at the other end 50B of the link 50, which is behind the vehicle with respect to the output shaft 44A of the motor 44.
A is connected by a pin 52 so as to be rotatable in the vertical direction. The latch 46B of the hood lock 46 is a striker 48 disposed below the front portion 24B of the hood 24.
Is detachably engaged with.

Therefore, the link 50 can be moved between the normal use position shown in FIG. 4 and the raised position shown in FIG. 5 by the rotation of the motor 44.
The front portion 24B of the hood 24 moves to the normal use position shown in FIG. 4 and the raised position shown in FIG. The position of the pin 52 in the raised position shown in FIG. 5 is on the diagonally upper front side of the vehicle with respect to the position of the pin 52 in the normal use position shown in FIG.

Therefore, as shown in FIG. 1, when the front portion 20A of the front bumper 20 abuts on the leg portion 16A of the pedestrian 16, the rear moving device 26 and the front moving device 28 cause the front of the hood 24 to move. The position of the portion 24B is the front bumper 2
Move to a position above the front end of 0. In the present embodiment, the front end of the hood 24 moves vertically above the front end of the front bumper 20. As a result, the front portion 24B of the hood 24
And the front portion 20A of the front bumper 20 can eliminate a difference in distance in the vehicle front-rear direction.

Further, the vehicle body 10 of the present embodiment is a vehicle equipped with a full shield wiper device, and as shown in FIG. 6, the rear portion 24A of the hood 24 has a cowl portion 5a.
4 is extended above. An air bag device 56 having a known structure is disposed inside the cowl portion 54.

Incidentally, the control device 18 uses the collision detection sensor 2
When it is determined that the pedestrian 16 or the like has come into contact with the vehicle body 10 from the signal from 2, the electric current is supplied to the inflator of the airbag device 56, and the gas from the inflator folds it into the case 58. The stored airbag bag body 60 breaks the upper portion of the case 58 and is deployed on the rear portion 24A of the hood 24 and the front portion 62A of the front shield glass 62 as shown in FIG.

As shown in FIG. 7, when the airbag 60 is deployed, the hood 24 is moved diagonally forward and upward by the rear moving device 26 and the front moving device 28. It is difficult for the airbag bag body 60 and the rear portion 24A of the hood 24 to interfere with each other.

Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG.

In the present embodiment, the control device 18 sends the output signal from the pre-collision detection sensor 14 and the vehicle speed signal, for example, a predetermined speed (for example, 20 km / h) or more in step (hereinafter, S) 200. When it is determined that the pre-collision detection during traveling is combined with the signal that the vehicle is traveling, the process proceeds to S202, and the rear movement device 26 for moving the hood 24 that covers the engine room and the front portion. A predetermined current is passed through the moving device 28.

As a result, the link 40 of the rear moving device 26
2 moves from the normal use position shown in FIG. 2 to the raised position shown in FIG. 3 by the rotation of the motor 30, and the movement of the link 40 causes the rear portion 24A of the hood 24 to move from the normal use position shown in FIG. Move to the indicated rising position. Further, the link 50 of the front part moving device 28 is moved from the normal use position shown in FIG. 4 to the raised position shown in FIG. 5 by the rotation of the motor 44, and the movement of the link 50 causes the front part 24B of the hood 24 to move. It moves from the normal use position shown in FIG. 4 to the raised position shown in FIG.

On the other hand, when the control device 18 determines in S200 that the output signal from the pre-collision detection sensor 14 and the vehicle speed signal are combined and it is not pre-collision detection during traveling, the process returns to S200.

Next, when the control device 18 determines in S204 that the pedestrian 16 or the like has come into contact with the vehicle body 10 based on the signal from the collision detection sensor 22, S206
Then, the electric current is passed through the inflator of the airbag device 56. As a result, the airbag bag 60 is folded and stored in the case 58 by the gas from the inflator.
Broke the upper part of the case 58,
It spreads on A and the front part 62A of the front shield glass 62.

On the other hand, the control device 18 waits for a signal from the collision detection sensor 22 in S204, and if there is no signal from the collision detection sensor 22 within a predetermined time, the pedestrian 16 or the like contacts the vehicle body 10. It is determined that it did not, S2
Then, in S208, a predetermined current is passed through the rear moving device 26 and the front moving device 28 in order to return the hood 24 covering the engine room to the normal use position in S208.

As a result, the link 40 of the rear moving device 26
2 is moved from the raised position shown in FIG. 3 to the normal use position shown in FIG. 2 by the rotation of the motor 30, and the rear portion 24A of the hood 24 is moved from the raised position shown in FIG. Move to the normal use position. Further, the link 50 of the front moving device 28 moves from the raised position shown in FIG. 5 to the normal use position shown in FIG. 4 by the rotation of the motor 44, and the movement of this link 50 causes the front portion 24B of the hood 24 to move. It moves from the raised position shown in FIG. 5 to the normal use position shown in FIG.

Therefore, in this embodiment, as shown in FIG. 1, the rear moving device 26 and the front moving device 28 allow
Front part 20A of front bumper 20 is leg 1 of pedestrian 16
When abutting against 6A, the rear moving device 26 and the front moving device 28 can eliminate the difference in the vehicle front-rear distance between the front portion 24B of the hood 24 and the front portion 20A of the front bumper 20. Therefore, the front part 2 of the front bumper 20
When 0A comes into contact with the leg 16A of the pedestrian 16, substantially at the same time,
Since the front portion 24B of the hood 24 contacts the upper portion of the leg portion 16A, the bending moment (arrow M in FIG. 1) generated in the leg portion 16A of the pedestrian 16 can be reduced. Further, since the front portion 24B of the hood 24 is separated from a member such as a grill on the front portion of the vehicle body, the front portion 24B of the hood 24 is easily deformed and the energy absorption performance is improved.

Further, in this embodiment, as shown in FIG. 1, the entire hood 24 is moved diagonally forward and upward by the rear moving device 26 and the front moving device 28. As a result, the hood 24 can be kept away from the vehicle body frame members such as the apron upper member 34, the engine, and the like.
The deformation stroke of the hood 24 is increased and the energy absorption performance is improved.

Further, in the present embodiment, as shown in FIG. 7, the entire hood 24 moves diagonally forward and to the upper side of the vehicle. Therefore, when the airbag bag body 60 is deployed, the airbag bag body 60 moves toward the hood 24. It becomes difficult to interfere with the rear portion 24A. As a result, the vehicle body 10 equipped with the full concealment wiper device
Also in the above, the airbag bag body 60 can be easily deployed.

Next, a second embodiment of the automobile hood structure according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 10, in this embodiment,
One end 70A of a first link 70 forming a part of the rear moving device 26 is connected to an output shaft 30A of a motor 30 forming a part of the rear moving device 26. The other end 70 </ b> B of the first link 70, which is located below the vehicle, has a second portion 70 </ b> B that forms a part of the rear movement device 26.
One end 72A of the link 72 is connected by a pin 74 so as to be rotatable in the front-rear direction. At the other end 72B of the second link 72, which is on the diagonally upper front side of the vehicle with respect to the pin 74, the left and right hinge arms 42 (only the vehicle left side is shown in FIG. 10) attached to the rear portion 24A of the hood 24 are connected by the pin 43. It is connected so that it can rotate in the vertical direction.

Therefore, the first link 70 and the second link 72
Is movable to the normal use position shown in FIG. 10 and the raised position shown in FIG. 11 by the rotation of the motor 30,
By the first link 70 and the second link 72, the rear portion 24A of the hood 24 is moved to the normal use position shown by the solid line in FIG. 12 and the raised position shown by the chain double-dashed line. The position of the pin 43 in the raised position shown by the two-dot chain line in FIG. 12 is on the diagonally upper front side of the vehicle with respect to the position of the pin 43 in the normal use position shown by the solid line.

Therefore, also in this embodiment, as in the first embodiment, as shown by the chain double-dashed line in FIG. 12, the front moving device 26 and the front moving device 28 are moved by the rear moving device 26 and the front moving device 28.
Of the hood 2 when the front part 20A of the vehicle comes into contact with the leg of the pedestrian.
It is possible to eliminate a distance difference in the vehicle front-rear direction between the front portion 24B of No. 4 and the front portion 20A of the front bumper 20.

Next, the operation of this embodiment will be described.

In this embodiment, as in the first embodiment,
As shown by the chain double-dashed line in FIG.
When 0A comes into contact with the leg of the pedestrian, the difference in the vehicle front-rear direction between the front portion 24B of the hood 24 and the front portion 20A of the front bumper 20 can be eliminated, so that the leg portion 16A of the pedestrian 16 can be prevented. Bending moment generated (arrow M in Figure 1)
Can be reduced. Further, since the front portion 24B of the hood 24 is separated from a member such as a grill on the front portion of the vehicle body, the front portion 24B of the hood 24 is easily deformed and the energy absorption performance is improved.

Also in this embodiment, the rear moving device 26 is also used.
And the front moving device 28 moves the entire hood 24 diagonally forward and upward of the vehicle. As a result, the hood 24 can be kept away from the vehicle body frame members such as the apron upper member 34, the engine, and the like. Therefore, the deformation stroke of the hood 24 is increased and the energy absorption performance is improved.

Also in this embodiment, since the entire hood 24 moves diagonally forward and to the upper side of the vehicle, the airbag bag body 60.
The air bag body 60 is less likely to interfere with the rear portion 24A of the hood 24 when being deployed. As a result, the airbag bag 60 can be easily deployed even in the vehicle body 10 equipped with the full shield wiper device.

Further, in this embodiment, as shown by the arrow in FIG. 10, when the hood 24 is moved, the first link 7 is moved.
0 rotates left on the paper surface, so the rear part 24A of the hood 24
First moves substantially forward of the vehicle, and then moves substantially upward.
As a result, even when the head of the pedestrian 16 comes into contact with the upper surface of the hood 24 and an input (arrow F in FIG. 11) to the lower side of the vehicle acts, the rear portion 24A of the hood 24 responds to the input F.
Can be smoothly stroked downwards and has good shock absorption.

Next, a third embodiment of the automobile hood structure according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 13, in the present embodiment,
Bracket 71 for rotatably supporting the hinge arm 42
By means of the bolt 73 and the nut 75, the rear moving device 2
It is fixed to the upper portion 76A of the moving plate 76 that constitutes the unit 6. A pair of slits 78 are formed on the moving plate 76 in parallel with each other so as to extend obliquely upward and forward of the vehicle. A pin 80 erected on the side surface 34A of the apron upper member 34 is inserted into the pair of slits 78, and the moving plate 76 is slanted forward and upward relative to the pin 80 (direction of arrow X in FIG. 13). ) And the opposite direction (direction of arrow Y in FIG. 14).

A wire 84 connected to the actuator 82 is connected to the lower portion 76B of the moving plate 76. The actuator 82 is adapted to move the wire 84 in response to a signal from the control device 18, and the bracket 71 capable of supporting the left and right hinge arms 42 is moved to the normal use position shown in FIG. 13 by operating the actuator 82. , And can move to the raised position shown in FIG. The position of the pin 43 in the raised position shown in FIG. 14 is on the diagonally upper front side of the vehicle with respect to the position of the pin 43 in the normal use position shown in FIG.

As shown in FIG. 15, in the present embodiment,
The hood lock 46 is fixed to the upper portion 85A of the moving plate 85 that constitutes the front moving device 28. The moving plate 85 is provided with a slit 86 extending obliquely forward and upward of the vehicle. A pin 88 that is erected on the hood lock 46 is inserted into the slit 86, and the moving plate 85 is located diagonally forward and upward of the vehicle (in the direction of arrow X in FIG. 15) with respect to the pin 88 and in the opposite direction (see FIG. 15). 16 arrow Y direction).

A wire 92 connected to the actuator 90 is connected to the lower portion 85B of the moving plate 85. The actuator 90 is adapted to move the wire 92 in response to a signal from the controller 18, and the hood lock 46 is activated by the operation of the actuator 90.
However, it is movable to the normal use position shown in FIG. 15 and the raised position shown in FIG. It should be noted that the position of the latch 46B of the hood lock 46 in the raised position shown in FIG. 16 is a position on the diagonally upper front side of the vehicle with respect to the position of the latch 46B of the hood lock 46 in the normal use position shown in FIG. There is.

As the actuators 82 and 90, an actuator used for a tilt-up mechanism used for a sunroof, a lock mechanism for a luggage door, or the like can be used.

Therefore, also in this embodiment, as in the first embodiment, when the front portion 20A of the front bumper 20 comes into contact with the leg of the pedestrian by the rear movement device 26 and the front movement device 28, It is possible to eliminate a distance difference in the vehicle front-rear direction between the front portion 24B of the hood 24 and the front portion 20A of the front bumper 20.

Next, the operation of this embodiment will be described.

In this embodiment, as in the first embodiment,
As shown in FIGS. 14 and 16, the rear moving device 26 and the front moving device 28 allow the front portion 2 of the front bumper 20 to move.
When 0A comes into contact with the leg of the pedestrian, the difference in the vehicle front-rear direction between the front portion 24B of the hood 24 and the front portion 20A of the front bumper 20 can be eliminated, so that the leg portion 16A of the pedestrian 16 can be prevented. Bending moment generated (arrow M in Figure 1)
Can be reduced. Further, since the front portion 24B of the hood 24 is separated from a member such as a grill on the front portion of the vehicle body, the front portion 24B of the hood 24 is easily deformed and the energy absorption performance is improved.

Also in this embodiment, the rear moving device 26 is also used.
And the front moving device 28 moves the entire hood 24 diagonally forward and upward of the vehicle. As a result, the hood 24 can be kept away from the vehicle body frame members such as the apron upper member 34, the engine, and the like. Therefore, the deformation stroke of the hood 24 is increased and the energy absorption performance is improved.

Also in this embodiment, since the entire hood 24 moves diagonally forward and upward of the vehicle, the airbag bag body 60 is
The air bag body 60 is less likely to interfere with the rear portion 24A of the hood 24 when being deployed. As a result, the airbag bag 60 can be easily deployed even in the vehicle body 10 equipped with the full shield wiper device.

Further, in this embodiment, the moving plate 76
And the moving plate 85, the rear portion 24 of the hood 24
A and the front portion 24B of the hood 24, that is, the entire hood 24,
The vehicle moves diagonally forward and upward in a straight line. As a result, the movement time of the hood 24 can be shortened.

In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to such embodiments, and various other embodiments within the scope of the present invention. It is obvious to a person skilled in the art that For example, as shown in FIG. 17, in the vehicle 94 in which the front and rear portions 24B of the hood 24 have an energy absorption stroke in the vehicle vertical direction, the rear portion 24A of the hood 24 moves diagonally forward and upward of the vehicle,
The front portion 24B of the hood 24 may be configured to move only in front of the vehicle. Further, in the vehicle in which the energy absorption stroke in the vehicle up-down direction is secured in the entire hood 24, the rear portion 24A and the front portion 2 of the hood 24 are provided.
Both 4B may be moved only in front of the vehicle.

[0059]

According to the present invention as set forth in claim 1, an automobile having hood moving means for moving the hood to a position where the impact energy is effectively absorbed when the possibility of collision with the collision body is detected by the detecting means. In the above hood structure, the position of the front part of the hood moves to a position above the front end of the front bumper, so when the front part of the front bumper comes into contact with the leg part of the pedestrian, it occurs on the leg part of the pedestrian. It has an excellent effect that the bending moment can be reduced and the front part of the hood can be easily deformed to improve the energy absorption performance.

According to a second aspect of the present invention, in the automobile hood structure according to the first aspect, the hood moving means moves the hood diagonally forward and upward of the vehicle. Therefore, in addition to the effect of the first aspect, the hood is provided. It has an excellent effect that the deformation stroke of is increased and the energy absorption performance is improved.

According to a third aspect of the present invention, in the hood structure for an automobile according to any of the first and second aspects, there is provided an airbag device disposed at a lower rear portion of the hood, and a collision with a collision body is provided. Since the airbag device is activated when the air bag is detected, the airbag bag can be easily deployed even in the vehicle equipped with the full shield wiper device in addition to the effect according to any one of claims 1 and 2. Has excellent effect.

[Brief description of drawings]

FIG. 1 is a side view showing a hood structure for an automobile according to a first embodiment of the present invention.

FIG. 2 is a side view showing a normal use position of the rear moving device in the hood structure for an automobile according to the first embodiment of the present invention.

FIG. 3 is a side view showing the raised position of the rear moving device in the hood structure for an automobile according to the first embodiment of the present invention.

FIG. 4 is a side view showing a normal use position of the front moving device in the hood structure for an automobile according to the first embodiment of the present invention.

FIG. 5 is a side view showing the raised position of the front moving device in the hood structure for an automobile according to the first embodiment of the present invention.

FIG. 6 is a side sectional view showing the airbag device in the hood structure for an automobile according to the first embodiment of the present invention.

FIG. 7 is a side sectional view showing a deployed state of the airbag device in the hood structure for an automobile according to the first embodiment of the present invention.

FIG. 8 is a perspective view showing a deployed state of the airbag device in the hood structure for an automobile according to the first embodiment of the present invention.

FIG. 9 is a flowchart showing the operation of the hood structure for an automobile according to the first embodiment of the present invention.

FIG. 10 is a side view showing a normal use position of the rear movement device in the hood structure for an automobile according to the second embodiment of the present invention.

FIG. 11 is a side view showing the raised position of the rear moving device in the hood structure for an automobile according to the second embodiment of the present invention.

FIG. 12 is a side view showing a hood structure for an automobile according to a second embodiment of the present invention.

FIG. 13 is a side view showing a normal use position of the rear moving device in the hood structure for an automobile according to the third embodiment of the present invention.

FIG. 14 is a side view showing a raised position of the rear moving device in the hood structure for an automobile according to the third embodiment of the present invention.

FIG. 15 is a side view showing a normal use position of the front moving device in the hood structure for an automobile according to the third embodiment of the present invention.

FIG. 16 is a side view showing a raised position of the front moving device in the hood structure for an automobile according to the third embodiment of the present invention.

FIG. 17 is a side view showing a vehicle hood structure according to another embodiment of the present invention.

FIG. 18 is a side sectional view showing a hood structure of an automobile according to a conventional example.

[Explanation of symbols]

10 car body 14 Pre-collision detection sensor (detection means) 18 Control device 20 front bumper 22 Collision detection sensor (detection means) 24 hood 26 Rear moving device (hood moving means) 28 Front moving device (hood moving means) 30 motor (hood moving means) 34 Apron Upper Member 40 links (hood moving means) 42 Hinge arm 44 motor (hood moving means) 46 hood lock 47 radiator support 48 striker 49 bracket 50 links (hood moving means) 54 Cowl 56 Airbag device 60 air bag body 70 link (hood moving means) 71 Bracket (hood moving means) 72 links (hood moving means) 76 Moving plate (hood moving means) 85 Moving plate (hood moving means)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B62D 25/12 B62D 25/10 D

Claims (3)

[Claims] 1. A hood structure for an automobile having hood moving means for moving the hood to a position where the impact energy is effectively absorbed when the possibility of collision with the collision body is detected by the detecting means. A hood structure for an automobile, characterized in that the position of the portion moves to a position above the front end of the front bumper. 2. The hood structure for an automobile according to claim 1, wherein the hood moving means moves the hood diagonally forward and upward of the vehicle. 3. An air bag device disposed at a lower rear portion of the hood, wherein the air bag device is activated when a collision with the collision body is detected. 2. The automobile hood structure according to any one of 2.