JP2002120762A - Vehicle hood hinge structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain reduction of rigidity of an entire hood hinge and reduce deformation load when a deformation degree is increased. SOLUTION: When a collision member abuts against a part opposed to a front part of the hood hinge 18 in a hood 14 and the load from the hood 14 acting on the hood hinge 18 exceeds a predetermined value, a front part of a hood hinge arm 20 of the hood hinge 18 downwardly moves together with the hood 14. At this time, a vertical wall part 22A in a base plate 22 is constituted so as to deform in an inside direction of a vehicle width (arrow B direction) with a bending point P1 being as a starting point, whereby the deformation load can be reduced compared with a case of deforming the base plate 22 in vehicle longitudinal and vertical directions in which the base plate 22 is relatively hard to deform.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood hinge structure of a vehicle, and more particularly to a hood hinge structure of a vehicle for attaching a hood to a structural member of a vehicle such as an automobile via a hinge.

[0002]

2. Description of the Related Art A conventional vehicle hood hinge structure for attaching a hood to a structural member of a vehicle such as an automobile via a hinge is disclosed in Japanese Patent Application Laid-Open No. H11-99966.
No.

As shown in FIG. 13, in the hood hinge structure of the vehicle, a rear end portion 100A of the hood 100 is attached to a structural member 102 of the vehicle via a hood hinge 104, and is disposed on the vehicle body. When the obstacle detection unit detects a collision, the hood 100 is moved upward by an actuator such as the airbag 106, and the hood hinge 104 is in a state shown in FIG. At this time, a center hinge 108 that constitutes a part of the hood hinge 104 rises substantially in the vertical direction to limit the height of the hood 100.
A bent portion 110 in the thickness direction is formed.
As a result, when the traveling vehicle collides with the collision body, the impact of the secondary collision between the collision body and the upper surface of the hood 100 is reduced.
The center hinge 108 is deformed from the bent portion 110 as a starting point, thereby absorbing and relaxing, and protecting the collision body. In other words, by forming the bent portion 110, the peak value P of the load characteristic can be reduced as shown by the solid line in FIG. 14, as compared with the load characteristics when the bent portion 110 is not formed (the two-dot chain line in FIG. 14). It has become.

[0004]

However, in the hood hinge structure of this vehicle, the effect of reducing the reaction force against the collision body is obtained by the bending moment proportional to the offset amount of the bent portion 110 in the thickness direction.
For this reason, as shown by the solid line in FIG. 14, although the peak value P of the load characteristic can be reduced, the center hinge 108 is bent in the up-down direction. However, in this case, there is a disadvantage that the rigidity of the entire hood hinge is reduced. In addition, there is also a problem that the deformation load increases due to the bottom when the center hinge 108 is deformed.

In view of the above, an object of the present invention is to provide a hood hinge structure for a vehicle which can suppress a reduction in rigidity of the entire hood hinge and reduce a deformation load.

[0006]

According to a first aspect of the present invention, there is provided a hood hinge arm mounted on a hood, a base plate mounted on a vehicle body, and a pin rotatably supporting the hood hinge arm on the base plate. And a starting point for deforming the base plate in the vehicle width direction by a predetermined load from the hood, is provided on the base plate.

Therefore, the base plate is deformed in the vehicle width direction from the starting point provided on the base plate by a predetermined load from the hood. As a result, the deformation load can be reduced as compared with the case where the base plate is relatively unlikely to be deformed and is deformed in the vehicle longitudinal direction or the vehicle vertical direction. Further, since only one starting point portion is formed on the base plate at the time of deformation, it is possible to suppress a decrease in rigidity of the entire hood hinge.

According to a second aspect of the present invention, in the vehicle hood hinge structure according to the first aspect, a hood of the hood hinge arm is compared with a vertical distance between a center of rotation of the pin and the starting point. The distance in the vehicle width direction between the mounting portion to the base plate and the base plate is large.

Therefore, in addition to the contents described in claim 1,
By increasing the distance in the vehicle width direction between the mounting portion of the hood hinge arm to the hood and the base plate compared to the vertical distance between the center of rotation of the pin and the starting point, the angle of the pin in the vehicle width direction is slightly increased. Due to the change, the hood can be largely deformed downward. As a result, the load generated by the colliding body can be kept low with a simple configuration.

According to a third aspect of the present invention, in the hood hinge structure for a vehicle according to the first aspect, a hood of the hood hinge arm is provided with respect to a vertical distance between a center of rotation of the pin and the starting point. Wherein the ratio of the distance between the mounting portion and the base plate in the vehicle width direction is 2 or more.

Therefore, in addition to the contents described in claim 1,
For the vertical distance between the center of rotation of the pin and the starting point,
When the ratio of the distance between the mounting portion of the hood hinge arm to the hood and the base plate in the vehicle width direction is 2 or more, the hood can be largely deformed downward due to a slight angle change in the vehicle width direction of the pin. . As a result, the load generated by the colliding body can be kept low with a simple configuration.

According to a fourth aspect of the present invention, a hood hinge arm attached to a hood, a base plate attached to a vehicle body, a link connecting the hinge arm and the base plate, and the hood hinge arm being rotatable. A hood hinge structure for a vehicle having at least a pin pivotally supported by the link, wherein the link is provided with a starting portion for deforming the link in the vehicle width direction by a predetermined load from the hood, and in a vehicle width direction of the link. When the amount of deformation is equal to or more than a predetermined value, locking means is provided for releasing locking between the link and the base plate and rotating and lowering the link toward the front and rear of the vehicle.

Therefore, in the first half of the collision, the link is deformed in the vehicle width direction from the starting point provided on the link by a predetermined load from the hood. Further, in the latter half of the collision, when the amount of deformation of the link in the vehicle width direction becomes equal to or greater than a predetermined value, the locking between the link and the base plate by the locking means is released, and the link rotates and descends to the front and rear of the vehicle, The hood can be lowered without relying on the deformation of the link.
As a result, the deformation strength of the hood hinge does not greatly affect the load generated by the collision body, and the increase in the deformation load due to the bottom of the hood hinge is suppressed, so that the deformation load can be reduced. Further, since only one starting point portion is formed on the link at the time of deformation, it is possible to suppress a decrease in rigidity of the entire hood hinge.

According to a fifth aspect of the present invention, in the hood hinge structure for a vehicle according to the fourth aspect, a hood of the hood hinge arm is compared with a vertical distance between a rotation center of the pin and the starting point. A distance in a vehicle width direction between the attachment portion to the vehicle and the link is large.

Therefore, in addition to the contents described in claim 4,
By increasing the distance in the vehicle width direction between the link of the hood hinge arm to the hood and the link as compared to the vertical distance between the center of rotation of the pin and the starting point, a slight angle in the vehicle width direction of the pin Due to the change, the hood can be largely deformed downward. As a result, the load generated by the colliding body can be kept low with a simple configuration.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a hood hinge structure for a vehicle according to the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a forward direction of the vehicle, an arrow UP indicates an upward direction of the vehicle, and an arrow IN indicates an inward direction of the vehicle width.

As shown in FIG. 6, a hood 14 for covering an engine room 12 formed at the front of the vehicle body 10 is provided.
Is near the both ends in the vehicle width direction at the rear end 14A,
Each is attached via a hood hinge 18 to left and right apron upper members 16 which are skeletal members at the front of the vehicle body.

As shown in FIG. 2, the hood hinge 18
Has a hood hinge arm 20 and a base plate 22.

As shown in FIG. 1, a hood mounting portion 2 is provided at the front of the hood hinge arm 20 so as to face inward in the vehicle width direction.
0A is formed, and a pair of front and rear mounting holes 24 and 26 are formed in the hood mounting portion 20A.

As shown in FIG. 3, these mounting holes 2
Bolts 29 are respectively inserted into the upper and lower surfaces 4 and 26 of the inner panel 15 of the hood 14.
Reinforcement 17 is welded to 5A along the vehicle front-rear direction. Reinforcement 17
The hood 14 is connected to the hood mounting portion 20 </ b> A of the hood hinge arm 20 by the nut 19 and the bolt 29 fixed to the hood 14.
Attached to.

As shown in FIG. 4, the reinforcement 17 has a U-shaped cross section that is open upward, and opens toward the outer panel 21 of the hood 14.

As shown in FIG. 3, the rear end portion 20B of the hood hinge arm 20 is vertically rotated by a pin 28 disposed along the vehicle width direction on the upper end portion 22B of the vertical wall portion 22A of the base plate 22. It is supported as much as possible. In addition, as shown in FIG.
The upper end portion 22B of the vertical wall portion 22A is a fender 23
Are located below the upper parting line 23A.

As shown in FIG. 1, the base plate 22
The lower end of the vertical wall portion 22A is a mounting portion 22C extending substantially horizontally toward the outside in the vehicle width direction, and both front and rear ends of the mounting portion 22C are bolts 30 and bolts 30.
The apron upper member 16 is fixed to the upper wall portion 16A by a nut 32 (see FIG. 3) screwed into the apron upper member 16.

As shown in FIG.
In the vertical middle portion of the vertical wall portion 22A, a bent portion 34 having a crank shape when viewed from the vehicle front-rear direction is formed, and the upper end portion 22B is offset inward in the vehicle width direction. That is, the bent portion 34 is bent inward in the vehicle width direction at the lower bending point P1, and the upper bending point P1 is bent.
At 2 it is bent upward. When the vertical wall portion 22A is deformed inward in the vehicle width direction, the hood hinge arm 20
The bent portion 34 is set near the lower side of the lower surface 20C of the hood hinge arm 20 so as not to interfere with the hood hinge arm 20.

As shown in FIG. 1, the base plate 22
A bead 40 for ensuring surface rigidity is formed at a substantially central portion in the front-rear direction of the vertical wall portion 22A. The bead 40 bulges outward in the vehicle width direction, has a triangular shape in a side view and a plan view, and an upper end portion 40 </ b> A reaches near a lower portion of the bent portion 34. Also, base plate 2
A flange 22D for ensuring surface rigidity is formed on the upper front side of the vertical wall portion 22A in FIG.

As shown in FIG. 4, compared with the vertical distance H1 between the rotation center S1 of the pin 28 and the bending point P1, the mounting portion S2 of the hood hinge arm 20 to the hood 14 and the vertical wall portion of the base plate 22 The distance L1 in the vehicle width direction from the lower portion of 22A is large.

Therefore, as shown in FIG.
Abuts on the hood 14, a load of a predetermined value or more acts on the hood hinge arm 20 from the hood 14, and the hood mounting portion 20A of the hood hinge arm 20 is lowered (arrow A in FIG. 5).
When the stroke is made, the vertical wall portion 22A of the base plate 22 is deformed in the vehicle width inner direction (the direction of the arrow B in FIG. 4) starting from the bending point P1. In addition,
The bending point P2 is connected to the flange 22 shown in FIG. 1 and FIG.
D prevents deformation.

Next, the operation of the present embodiment will be described.

In this embodiment, as shown by a solid line in FIG.
When the collision body 50 abuts on a portion facing the front portion of the hood 8 and the load from the hood 14 acting on the hood hinge 18 becomes a predetermined value or more, the hood 14 is changed from a state shown by a two-dot chain line to a solid line. Hood hinge 1
8 hood attachment part 20 of the hood hinge arm 20
A strokes downward (in the direction of arrow A in FIG. 5). For this reason, the vertical wall portion 22A of the base plate 22 starts from the bending point P1 in the vehicle width inside direction (the direction of arrow B in FIG. 5).
Deform to As a result, the deformation load can be reduced as compared with the case where the base plate 22 is relatively unlikely to be deformed and is deformed in the vehicle longitudinal direction or the vehicle vertical direction.

In this embodiment, the base plate 2
Since only one bending point P1 as a starting point when the base 2 is deformed is required, even when the amount of deformation of the base plate 22 is increased, a decrease in the rigidity of the entire hood hinge 18 can be suppressed.

In the present embodiment, the collision body 50 pushes the hood 14 downward, and the hood 14 is moved downward by the distance H2.
When displaced, the mounting part of the pin 38 on the base plate 22 is displaced by a distance L2 in the vehicle width direction by rotating the angle θ in the direction of arrow B. Therefore, by providing the bending point P1 and concentrating the strain on the bending point P1, the angle change θ can be easily generated, and the hood 14 can be largely deformed downward. As a result, the load generated by the collision body 50 can be kept low.

As shown by a dashed line in FIG.
When the bending point P1 is formed on the base plate 22 (the configuration according to the present embodiment) and L1 / H1 = 1.7, the increase characteristic Z2 of the generated load is indicated by a broken line in FIG. The effect of reducing the generated load when the displacement is increased is improved as compared with the increase characteristic Z1 of the generated load with respect to the displacement when P1 is not formed. In addition, as shown by a two-dot chain line in FIG. 7, the generated load increasing characteristic Z3 when the bending point P1 is formed in the base plate 22 and L1 / H1 = 2 is obtained, the generated load reducing effect is improved from a small displacement. I do. Therefore, judging from two examples, if L1 / H1 is 2 or more, a sufficient effect of reducing the generated load can be obtained.

In this embodiment, the base plate 2
The bent portion 34 is provided at the middle portion of the vertical
The upper portion of the vertical wall portion 22A of the base plate 22 is deformed in the vehicle width inward direction (the direction of the arrow B in FIG. 4) starting from the bending point P1 of the bending portion 34. As shown in FIG. 8A, a hole 54 elongated in the vehicle front-rear direction is formed in the base plate 22 at an intermediate portion of the vertical wall portion 22A in the vertical direction, and this portion is made to be a fragile portion. The vertical wall portion 22A may be configured to be deformed inward in the vehicle width direction starting from this portion.
In this case, the vertical center portion 54A of the hole 54 is placed on the lower surface 20 of the hood hinge arm 20 so that the deformed vertical wall portion 22A and the hood hinge arm 20 do not interfere with each other.
It is preferable to set near C below. FIG.
As shown in (B), a triangular cutout 56 is formed from the vehicle rear side in the vertical direction intermediate portion of the vertical wall portion 22A of the base plate 22, and this portion is made a weak portion,
The vertical wall portion 22A may be configured to be deformed inward in the vehicle width direction starting from this portion. In this case, the top 56A of the notch 56 is connected to the hood hinge arm 20 so that the deformed vertical wall portion 22A does not interfere with the hood hinge arm 20.
Is preferably set near the lower side of the lower surface 20C.

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

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 9, in this embodiment, the hood hinge 18 has a hood hinge arm 20, a base plate 60, and a link 62.

A rear end upper portion 62A of the link 62 is rotatably supported on a rear end portion 20B of the hood hinge arm 20 by a pin 64 arranged along the vehicle width direction so as to be vertically rotatable. As shown in FIG. 11, the upper rear end 62A of the link 62 is located below the vicinity 14A of both ends of the hood 14 in the vehicle width direction.

As shown in FIG. 10, the base plate 6
The mounting portion 60A of the mounting portion 60A extends substantially horizontally along the front-rear direction of the vehicle.
The apron upper member 16 is fixed to the upper wall 16 </ b> A by a nut 32 screwed to the bolt 0 and the bolt 30.

As shown in FIG. 9, the base plate 60
In the middle portion in the front-rear direction of the mounting portion 60A, an inner end in the vehicle width direction is extended downward to form a vertical wall portion 60B. At the lower end of the vertical wall portion 60B, a lower front end 62B of the link 62 is rotatably supported in a vertical direction by a pin 66 arranged along the vehicle width direction. A bead 68 bulging outward in the vehicle width direction is formed at the center in the front-rear direction of the vertical wall portion 60B, and the bead 68 has a triangular shape in plan view and side view. The outer end 6 of the bead 68 in the vehicle width direction is also provided.
8A is in contact with the vehicle width direction inner side surface 16B of the apron upper member 16, and the vertical wall portion 6 of the base plate 60.
0B and inner side surface 1 of apron upper member 16 in the vehicle width direction
6B, a gap 61 is formed. Therefore, the vertical wall portion 60B of the base plate 60 can be deformed outward in the vehicle width direction (the direction of arrow D in FIG. 11).

The mounting portion 60A of the base plate 60
A claw portion 60C protruding inward in the vehicle width direction is formed at the front end of the vehicle. A front end lower portion 62B of the link 62 is in contact with the claw portion 60C from behind the vehicle, so that the link 62 does not rotate forward around the pin 66.

As shown in FIG. 11, the base plate 6
At the rear end of the mounting portion 60A, a stopper 60D as a locking means is formed to protrude upward. At the rear of the link 62, a claw 62C as a locking means is formed so as to protrude outward and downward in the vehicle width direction.
2C abuts and is locked on the upper surface of the inner end of the stopper 60D in the vehicle width direction.

In the middle part of the link 62 in the vertical direction,
A bent portion 6 having a substantially crank shape when viewed from the vehicle front-rear direction.
9 are formed, and the upper part of the link 62 is offset inward in the vehicle width direction. That is, the bent portion 69 is bent inward in the vehicle width direction at the lower bending point P3, and is bent upward at the upper bending point P4. Also, the vertical distance H between the rotation center S1 of the pin 64 and the bending point P3.
3, the distance L3 in the vehicle width direction between the attachment portion S2 of the hood hinge arm 20 to the hood 14 and the link 62 is larger.

Therefore, as shown in FIG.
0 is in contact with the hood 14 and a load equal to or more than the predetermined value from the hood 14 is applied to the hood hinge arm 20, that is, in the first half of the collision, the hood 14 changes from the state shown by the two-dot chain line to the state shown by the solid line. In order to deform, the hood attachment portion 20A of the hood hinge arm 20 strokes downward (in the direction of arrow A in FIG. 12), and the link 62 moves to the bending point P3.
From the starting point in the vehicle width direction (direction of arrow B in FIG. 12).

When the amount of deformation of the link 62 in the vehicle width direction becomes equal to or greater than a predetermined value, that is, in the latter half of the collision, the claw 62C of the link 62 comes off the stopper 60D of the base plate 60. The link 62 is configured to rotate down to the rear of the vehicle (in the direction of arrow C in FIG. 10) around the pin 66 without depending on the deformation in the vehicle width inner direction (in the direction of arrow B in FIG. 12).

Next, the operation of the present embodiment will be described.

In the present embodiment, as shown by a solid line in FIG. 12, the collision body 50 abuts on a portion of the hood 14 facing the front portion of the hood hinge 18 when the vehicle is running, and acts on the hood hinge 18. When the load from the hood 14 is equal to or more than a predetermined value, that is, in the first half of the collision, the hood 14 is deformed from the state shown by the two-dot chain line to the state shown by the solid line. The hood mounting portion 20A is downward (arrow A in FIG. 12).
Direction). For this reason, the link 62 is deformed in the vehicle width inside direction (the direction of the arrow B in FIG. 12) starting from the bending point P3. At this time, the vertical wall portion 60B of the base plate 60 is deformed outward in the vehicle width direction (the direction of arrow D in FIG. 12).

In the present embodiment, when the amount of deformation of the link 62 in the vehicle width direction becomes greater than a predetermined value,
In the latter half of the collision, the pawl 62C of the link 62 comes off the stopper 60D of the base plate 60, so that the link 62 is centered on the pin 66 without depending on the deformation in the vehicle width inner direction (the direction of the arrow B in FIG. 12). At the rear of the vehicle (in the direction of arrow C in FIG. 10).

As a result, the deformation strength of the hood hinge 18 does not greatly affect the load generated by the collision body 50, and the deformation load due to the bottom of the hood hinge 18 is suppressed, so that the deformation load can be reduced. . The deformation strength of the hood hinge does not greatly affect the load generated by the collision body, and the increase in the deformation load due to the bottom of the hood hinge is suppressed, so that the deformation load can be reduced. Further, compared to the distance L1 in the vehicle width direction between the mounting portion S2 of the hood hinge arm 20 to the hood 14 and the lower portion of the vertical wall portion 22A of the base plate 22, the mounting of the hood hinge arm 20 to the hood 14 in the first embodiment. The distance L3 in the vehicle width direction between the portion S2 and the link 62 can be reduced, and the rigidity of the entire hood hinge 18 improves.

In the present embodiment, the bending point P3, which is the starting point when the link 66 is deformed, may be located at only one place.
8 can be prevented from lowering in rigidity.

In the present embodiment, as in the first embodiment, when the collision body 50 pushes down the hood 14 and the hood 14 is displaced downward, the pin 64
The angle of the mounting portion changes inward in the vehicle width direction (direction of arrow B). Therefore, by providing the bending point P3 and concentrating the strain at the bending point P3, the angle change can be easily generated, and the hood 14 can be largely deformed downward. As a result, the load generated by the collision body 50 can be kept low.

As shown by the solid line in FIG. 7, the increase characteristic Z4 of the generated load in the present embodiment (when L2 / H2 = 1.4) is L1 / H1 = 2 in the first embodiment. As compared with the increase characteristic Z3 in the case, the effect of reducing the generated load when the displacement is increased is improved.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are within the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in each of the above embodiments, the base plate 2
Although the second or link 66 is deformed inward in the vehicle width direction, the base plate 22 or the link 66 may be deformed outward in the vehicle width direction. In the second embodiment, when the amount of deformation of the link 66 in the vehicle width direction becomes equal to or greater than a predetermined value, the lock between the link 66 and the base plate 60 is released, and the link 66 is rotated down toward the rear of the vehicle. However, instead of this, the link 66 may be configured to rotate and descend toward the front of the vehicle.

[0054]

According to the first aspect of the present invention, there is provided a vehicle having at least a hood hinge arm attached to a hood, a base plate attached to a vehicle body, and a pin rotatably supporting the hood hinge arm on the base plate. In the hood hinge structure, a starting point for deforming the base plate in the vehicle width direction by a predetermined load from the hood is provided on the base plate, so that when the amount of deformation is increased, a decrease in rigidity of the entire hood hinge can be suppressed and deformation can be achieved. It has an excellent effect that the load can be reduced.

According to a second aspect of the present invention, in the hood hinge structure for a vehicle according to the first aspect, the hood hinge arm is attached to the hood in comparison with the vertical distance between the center of rotation of the pin and the starting point. Since the distance between the portion and the base plate in the vehicle width direction is large, in addition to the effect described in claim 1, there is an excellent effect that the load generated by the collision body can be suppressed with a simple configuration.

According to a third aspect of the present invention, in the vehicle hood hinge structure according to the first aspect, a mounting portion of the hood hinge arm to the hood with respect to a vertical distance between the center of rotation of the pin and the starting point. Since the ratio of the distance between the base plate and the base plate in the vehicle width direction is 2 or more, in addition to the effect described in claim 1, there is an excellent effect that the load generated by the collision body can be reduced with a simple configuration. .

According to a fourth aspect of the present invention, there is provided a hood hinge arm attached to a hood, a base plate attached to a vehicle body, a link connecting the hinge arm and the base plate, and a hood hinge arm pivotally connected to the link. In a hood hinge structure of a vehicle having at least a supporting pin, a starting point for deforming the link in the vehicle width direction by a predetermined load from the hood is provided on the link, and the amount of deformation of the link in the vehicle width direction is equal to or more than a predetermined value. In this case, since the locking means for unlocking the link and the base plate and rotating the link downward and forward in the vehicle is provided, it is possible to suppress a decrease in rigidity of the entire hood hinge when the deformation amount is increased. And has an excellent effect that the deformation load can be reduced.

According to a fifth aspect of the present invention, in the hood hinge structure for a vehicle according to the fourth aspect, the hood hinge arm is attached to the hood in comparison with the vertical distance between the center of rotation of the pin and the starting point. Since the distance between the portion and the link in the vehicle width direction is large, in addition to the effect described in claim 4, there is an excellent effect that the load generated by the collision object can be suppressed low with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a hood hinge structure of a vehicle according to a first embodiment of the present invention, as viewed obliquely from the front outside the vehicle.

FIG. 2 is a plan view showing a hood hinge structure of the vehicle according to the first embodiment of the present invention.

FIG. 3 is a side view in section of a hood showing a hood hinge structure of the vehicle according to the first embodiment of the present invention.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 2;

FIG. 5 is an operation explanatory view of the hood hinge structure of the vehicle according to the first embodiment of the present invention.

FIG. 6 is a perspective view of the vehicle front to which the hood hinge structure of the vehicle according to the first embodiment of the present invention is applied, as viewed obliquely from the front of the vehicle.

FIG. 7 is a graph showing load characteristics in a hood hinge structure of a vehicle.

FIG. 8A is a side view showing a hood hinge structure of a vehicle according to a modification of the first embodiment of the present invention, and FIG. 8B is a side view showing another modification of the first embodiment of the present invention. It is a side view which shows the hood hinge structure of a vehicle.

FIG. 9 is a perspective view showing a hood hinge structure of a vehicle according to a second embodiment of the present invention, as viewed obliquely from the front outside of the vehicle.

FIG. 10 is a side view showing a hood hinge structure of a vehicle according to a second embodiment of the present invention.

FIG. 11 is a sectional view corresponding to FIG. 4 of a hood hinge structure for a vehicle according to a second embodiment of the present invention.

FIG. 12 is an operation explanatory view of a hood hinge structure for a vehicle according to a second embodiment of the present invention.

FIG. 13 is a side view showing a hood hinge structure of a vehicle according to a conventional example.

FIG. 14 is a graph showing load characteristics in a hood hinge structure of a vehicle according to a conventional example.

[Explanation of symbols]

 14 Hood 16 Apron Upper Member 18 Hood Hinge 20 Hood Hinge Arm 22 Base Plate 28 Pin 34 Bent Portion 54 Hole 56 Notch 60 Base Plate 60D Base Plate Stopper (Locking Means) 62 Link 62C Link Claw (Locking Means) 64 Pin 66 pin 69 bent part

Continued on the front page (72) Inventor Toshiaki Hosoya 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Co., Ltd. (72) Inventor Shinji Mori 100 Kutoku Town, Ogaki City, Gifu Prefecture F-term (reference) 3D003 AA01 AA04 AA05 BB01 CA03 DA16 3D004 AA01 AA04 BA02 CA41

Claims (5)

[Claims] 1. A hood hinge structure for a vehicle having at least: a hood hinge arm attached to a hood; a base plate attached to a vehicle body; and a pin rotatably supporting the hood hinge arm on the base plate. A hood hinge structure for a vehicle, wherein a starting point for deforming the base plate in the vehicle width direction by a predetermined load is provided on the base plate. 2. The method according to claim 1, wherein a distance in a vehicle width direction between a mounting portion of the hood hinge arm to the hood and the base plate is greater than a vertical distance between a rotation center of the pin and the starting point. The hood hinge structure for a vehicle according to claim 1. 3. A ratio of a distance in a vehicle width direction between a mounting portion of the hood hinge arm to a hood and the base plate to a vertical distance between a center of rotation of the pin and the starting point is 2 or more. The hood hinge structure for a vehicle according to claim 1, wherein: 4. A hood hinge arm attached to a hood, a base plate attached to a vehicle body, a link connecting the hinge arm and the base plate, and a pin pivotally supporting the hood hinge arm on the link. A hood hinge structure for a vehicle having at least a starting point portion for deforming the link in the vehicle width direction by a predetermined load from the hood, and an amount of deformation of the link in the vehicle width direction is equal to or more than a predetermined value. When it becomes
A hood hinge structure for a vehicle, comprising: locking means for releasing locking between the link and the base plate and rotating and lowering the link toward the front and rear of the vehicle. 5. A vehicle width direction distance between a mounting portion of the hood hinge arm to the hood and the link is larger than a vertical distance between a center of rotation of the pin and the starting point. The vehicle hood hinge structure according to claim 4.