JP2002002545A - Hood hinge structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a rotational center of a hood hardly cause fluctuation during normal opening and closing of the hood, and to reduce a load applied to a colliding body. SOLUTION: When a load from the hood 14 acting on a hood hinge 18 becomes a predetermined value or more, a front part of a hood side arm 20 of the hood hinge 18 moves downward. By this, a pawl part 36 of the hood side arm 20 moves downward, a hook part 40A of a wire 40 is pushed out downward by the pawl 36, and an engagement between the hook 40A and a pawl part 32C of a base plate 24 is released. As a result, a shaft 28 and a link 22 are lowered using a shaft 30 as a rotational center, the hood side arm 20 supported by the shaft 28 moves downward, and by this, the whole of the hood 14 moves downward.

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 hood hinge structure of a vehicle 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. 2000-1634.
No. 0 publication.

As shown in FIG. 21, in this vehicle hood hinge structure, a support 102 is mounted on a side member 100 and a hood mounting arm 106 is mounted on a hood 104.
And the hood mounting arm 106 is
It is configured to be rotatably attached to the second end 102A. The support 102 includes a base plate 102B facing the side member 100, and the base plate 102B.
And a diagonal member 102C rising diagonally upward from the rear of the vehicle body. The diagonal member 102C is formed of a band plate having a band width in the vehicle width direction. When a downward force is applied to the tip end 102A, the diagonal member 102C bends relatively easily to reduce the load generated on the collision body. Has become.

[0004]

However, in the hood hinge structure of this vehicle, the support 1 for rotatably supporting the rear end portion 106A of the hood mounting arm 106 is provided.
02 is curved so that the load generated on the collision body is reduced.
If C is configured to bend relatively easily, the center of rotation of the hood fluctuates during normal hood opening and closing, resulting in poor operability. That is, it is difficult to achieve both a configuration for reducing the load generated on the collision object and a configuration for making the rotation center of the hood difficult to change during normal hood opening and closing. Further, in the hood hinge structure of this vehicle, since the load generated on the collision body is reduced by bending the diagonal member 102C of the support body 102, the collision before the diagonal member 102C starts to bend. In the latter half of the collision when the curvature becomes large, the load generated on the collision body increases.

[0005] In consideration of the above fact, the present invention makes it difficult for the rotation center of the hood to fluctuate during normal hood opening and closing.
It is an object to obtain a hood hinge structure that can reduce a load generated on a collision body.

[0006]

According to a first aspect of the present invention, there is provided a hood hinge structure for a vehicle, wherein when a load from the hood is less than a predetermined value, the center of rotation of the hood is held at a predetermined holding position, And a rotation center holding means for lowering the rotation center of the hood from the holding position when the load from is higher than a predetermined value.

Accordingly, when the load from the hood is less than a predetermined value, the rotation center holding means holds the rotation center of the hood at a predetermined holding position. It can be difficult to do. On the other hand, when the collision body collides with the hood of the vehicle and the load from the hood acting on the hood hinge is equal to or greater than a predetermined value, the rotation center holding means lowers the rotation center of the hood from the holding position.
As a result, the entire hood can move downward, and the load generated on the collision body can be reduced.

According to a second aspect of the present invention, when the load from the hood is less than a predetermined value, the center of rotation of the hood moves within a lower area where the rotation center of the hood can return to a predetermined holding position. When the load from the hood is equal to or more than a predetermined value, the hood has a rotation center holding means for moving the rotation center of the hood to a lower position where the hood cannot return to the holding position.

Therefore, when the load from the hood is less than a predetermined value, the rotation center holding means holds the rotation center of the hood in a lower area where it can return to a predetermined holding position. In addition, the center of rotation of the hood does not greatly fluctuate. On the other hand, when the load from the hood is equal to or more than the predetermined value, the rotation center holding means moves the rotation center of the hood to a lower position where it cannot return to the holding position. As a result, the entire hood can move downward, and the load generated on the collision body can be reduced.

According to a third aspect of the present invention, there is provided a hood hinge structure for a vehicle, wherein an arm for connecting the hood to the center of rotation of the hood, a base attached to the vehicle body, and the arm and the base are connected. Link portion, when the load from the hood is less than a predetermined value, supports the link portion,
And a support member for releasing the support of the link portion when the load from the hood is equal to or more than a predetermined value.

Therefore, when the load from the hood is less than a predetermined value, the link member is supported by the support member.
The positional relationship between the arm and the base connected by the link does not change. As a result, the rotation center of the hood can be hardly fluctuated when the hood is normally opened and closed. On the other hand, when the collision body collides with the hood of the vehicle and the load from the hood acting on the hood hinge is equal to or greater than a predetermined value, the support of the link portion by the support member is released, and only the link portion bears the load. Deforms easily. As a result, the entire hood can move downward, and the load generated on the collision body can be reduced.

According to a fourth aspect of the present invention, there is provided a hood hinge structure for a vehicle, wherein an arm for connecting the hood to the center of rotation of the hood, a base attached to the vehicle body, and the arm and the base are connected. Link portion, when the load from the hood is less than a predetermined value, supports the link portion,
And a support member for rotating and lowering the link portion when a load from the hood is equal to or more than a predetermined value.

Therefore, when the load from the hood is less than a predetermined value, the link member is supported by the support member.
The positional relationship between the arm and the base connected by the link does not change. As a result, the rotation center of the hood can be hardly fluctuated when the hood is normally opened and closed. On the other hand, when the collision object collides with the hood of the vehicle and the load from the hood acting on the hood hinge is equal to or more than a predetermined value, the link portion is rotated down by the support member, and the rotation center of the hood is lowered. As a result, the entire hood can move downward, and the load generated on the collision body can be reduced.

According to a fifth aspect of the present invention, in the vehicle hood hinge structure according to any one of the third and fourth aspects, the support member includes one of the base portion and the vehicle body and the link. It is characterized in that the parts are connected.

Therefore, in addition to the contents described in any of the third and fourth aspects, the link portion can be reliably supported by the support member, and when the load from the hood is a predetermined value or more, the link portion is supported. The release or the link part is surely rotated down.

According to a sixth aspect of the present invention, in the vehicle hood hinge structure according to any one of the third to fifth aspects, the arm portion includes one of the base portion and the vehicle body and the support portion. The hood hinge structure for a vehicle according to any one of claims 3 to 5, wherein the connection with the member is released.

Therefore, in addition to the contents described in any one of the third to fifth aspects, at the front portion of the hood hinge, when a load is applied from substantially above the vehicle, the arm portion located at the front portion of the hood hinge is provided. The connection between one of the base and the vehicle body and the support member is reliably released.

According to a seventh aspect of the present invention, in the vehicle hood hinge structure according to any one of the third to fifth aspects, the hood releases the connection between the support member and the link portion. And

Therefore, in addition to the contents described in any one of claims 3 to 5, when a load is applied from substantially above the vehicle at the rear portion of the hood hinge, a portion of the hood located at the rear portion of the hood hinge is: The connection between the support member and the link portion is reliably released.

According to an eighth aspect of the present invention, in the hood hinge structure for a vehicle according to any one of the third to seventh aspects, the support member applies a tension to the link portion in advance in proportion to the weight of the hood. It is characterized by the following.

Therefore, in addition to the contents described in any one of claims 3 to 7, the connection of the support member during normal use is strengthened, and the detachment of the support member can be prevented.

According to a ninth aspect of the present invention, in the vehicle hood hinge structure according to any one of the third to seventh aspects, the support member has a flexible portion.

Therefore, in addition to the contents described in any of claims 3 to 7, by tuning the flexible portion, it is possible to reduce the load generated from the initial stage when the collision body collides with the hood.

The present invention according to claim 10 provides the present invention according to claim 3,
The hood hinge structure for a vehicle according to any one of 5, 6, 7, and 9, wherein the link portion and the base portion are integrated.

Therefore, in addition to the contents described in any one of claims 3, 5, 6, 7, and 9, the structure is simple and the manufacture is easy.

The present invention described in claim 11 provides the present invention according to claims 3 to 9
In the hood hinge structure for a vehicle according to any one of the above, the support member is a metal wire.

Therefore, in addition to the contents described in any of the third to ninth aspects, by making the supporting member a metal wire, the supporting member can be made compact and lightweight, and production and tuning are easy.

[0028]

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

As shown in FIG. 8, 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. 1, the hood hinge 18
Has a hood side arm 20 as an arm portion, a link 22 as a rotation center holding means or a link portion, and a base plate 24 as a base portion. A hood mounting portion 20A is formed on the upper front end of the hood-side arm 20 inward in the vehicle width direction.
Are formed with a pair of front and rear mounting holes 25 and 26.

As shown in FIG. 3, these mounting holes 2
Bolts 27 are inserted into the upper and lower surfaces of the inner panel 15 of the hood 14, respectively.
A reinforcement 17 is welded to 5A along the vehicle front-rear direction. Reinforcement 17
The hood 14 is attached to the hood attachment portion 20 </ b> A of the hood-side arm 20 by the nut 19 and the bolt 27 fixed to the hood 14. Note that the reinforcement 17 has an inverted hat-shaped cross-sectional shape opened upward, and the upper end portion 17A reaches the vicinity of the outer panel 21 of the hood 14. Therefore, the collision body 5 acting on the outer panel 21
Hood hinge 1 from the earliest possible stage
8 can be transmitted to the hood-side arm 20.

At the rear end 20B of the hood side arm 20,
A rear end 22A of the link 22 is rotatably supported in a vertical direction by a shaft 28 arranged along the vehicle width direction. The front end 22B of the link 22 is rotatably supported in a vertical direction at a middle portion of the base plate 24 in the front-rear direction of the vertical wall portion 24A by a shaft 30 arranged along the vehicle width direction. A bracket 32 is formed at the front end of the base plate 24.

As shown in FIG. 2, the base portion 32A of the bracket portion 32 is a plate portion extending substantially horizontally toward the inside in the vehicle width direction, and has a concave portion 32B formed from the front side. A claw portion 32C is formed downward at a rear portion of the base portion 32A of the bracket portion 32 on the outer side in the vehicle width direction.

As shown in FIG. 1, the hood side arm 20
A claw portion 36 is provided at the lower front end of the hood mounting portion 20A.
The claw portion 36 is formed with a concave portion 36A from the rear side. Therefore, the hood side arm 20
When the hood mounting portion 20A moves rearward, the claw portion 36 engages with the concave portion 32B of the bracket portion 32, and the shaft 2
As an auxiliary role of 8, 30, the hood 14 is prevented from moving backward.

A hook portion 40A formed at the front end of a metal wire 40 as a rotation center holding means or a support member is engaged with the claw portion 32C of the bracket portion 32.

As shown in FIG. 5, the hook portion 40A of the wire 40 is located below the claw portion 36 of the hood-side arm 20, and the claw portion 36 has moved downward (in the direction of arrow A in FIG. 5). In this case, as shown in FIG. 7, the hook portion 40A of the wire 40 is pushed downward by the claw portion 36,
The engagement with the claw portion 32C is released. When the claw portion 36 moves downward (in the direction of arrow A in FIG. 5), the claw portion 36 is pressed by the hood-side arm 20, and the base portion 32A of the bracket portion 32 is bent downward.

As shown in FIG. 1, a hook portion 40B is formed at the rear end of the wire 40, and the hook portion 40B of the wire 40 is engaged with the shaft 28 as shown in FIG. The hook portion 40B of the wire 40 is curved in an arc shape, and the hook portion 40B attempts to wind the wire around the shaft 28, so that the shaft 28 has a direction along the wire 40 (the direction of the arrow S in FIG. 1). ) Tension is acting.

On the other hand, a positioning claw 44 is provided on an upper portion of the longitudinal wall portion 24A of the base plate 24 in the front-rear direction inward in the vehicle width direction, and is linked to the positioning claw 44. The contact of the hood 22 holds the hood 14 at a predetermined assembly position against the tension. As a result, when the load from the hood 14 is less than a predetermined value, the shaft 28 serving as the rotation center of the hood 14 is held at the holding position shown in FIG.

The upper wall 24B of the base plate 24
Are fixed to the upper wall 16A of the apron upper member 16 by bolts 50 and nuts 51 (see FIG. 5) screwed to the bolts 50.

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

In this embodiment, when the load acting on the hood hinge 18 from the hood 14 is less than a predetermined value, the tension of the wire 40 causes the shaft 2 serving as the center of rotation of the hood 14 to rotate.
8 is held in the holding position shown in FIG. For this reason,
At the time of normal opening and closing of the hood, the rotation center of the hood 14 can be hardly fluctuated, and operability is improved.

As shown in FIG. 3, the collision body 52 comes into contact with a portion of the hood 14 facing the front portion of the hood hinge 18 when the vehicle is running or the like, and a load acting on the hood hinge 18 from the hood 14 is reduced. When the value exceeds the value, as shown in FIG. 4, the outer panel 21 contacts the reinforcement 17, and the front portion of the hood side arm 20 of the hood hinge 18 strokes downward (in the direction of arrow A in FIG. 4). . For this reason, the claw portion 36 of the hood side arm 20 moves downward (in the direction of arrow A in FIG. 5), and as shown in FIG. 7, the hook portion 40A of the wire 40 is pushed downward by the claw portion 36, and The engagement between the portion 40A and the claw portion 32C is released.

As a result, as shown in FIG. 4, the shaft 28 and the link 22 are moved downward about the shaft 30 (the arrow B in FIG. 4).
Direction), and the hood-side arm 2 supported by the shaft 28
0 moves downward (in the direction of arrow A in FIG. 4). For this reason,
Since the entire hood 14 moves downward, the load generated on the collision body 52 can be reduced as compared with the case where the hood-side arm 20 is deformed around the shaft 28.

In this embodiment, since the upper end 17A of the reinforcement 17 reaches the vicinity of the outer panel 21 of the hood 14, the outer panel 21 easily comes into contact with the reinforcement 17. As a result, the load acting on the outer panel 21 from the collision body 52 can be transmitted to the hood-side arm 20 of the hood hinge 18 as early as possible.

Further, in this embodiment, since the wire 40 connects the claw 32C of the base plate 24 and the link 22, the link 22 can be reliably supported by the wire 40 and the load from the hood 14 is maintained at a predetermined level. When the value exceeds the value, the support of the link 22 is surely released, and the link 22 rotates down.

In this embodiment, the hood hinge 18
When the claw 36 of the hood-side arm 20 formed at the front of the hood-side arm 20 is lowered, the connection between the wire 40 and the claw 32C of the base plate 24 is released. When a load equal to or more than a predetermined value acts on the wire 40 and the claw 3 of the base plate 24,
The connection with 2C can be reliably released.

Further, in this embodiment, since the wire 40 applies a tension to the link 22 in advance, which is substantially balanced with the weight of the hood 14, the attachment of the wire 40 during normal use becomes strong, and the detachment of the wire 40 is prevented. Can be prevented.

In the present embodiment, the use of the metal wire 40 allows the hood hinge 18 to be made compact and lightweight, which facilitates production and tuning of tension.

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 will be omitted.

As shown in FIG. 9, in the present embodiment, a convex portion 54 is formed upward at the front end of the base plate 24. A through hole 56 is formed in the convex portion 54, and the hook portion 40A of the wire 40 is engaged. On the other hand, at the tip of the hook portion 40B of the wire 40, a release portion 40C curved upward in an arc is formed, and the rear end of the wire 40 is curved in an S shape.

Therefore, as shown in FIG.
4, when the release portion 40C of the wire 40 is pushed down from above by a load of a predetermined value or more, the wire 40 rotates around the through hole 56, and the engagement between the hook portion 40B and the shaft 28 is released. It has become.

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

In this embodiment, as in the first embodiment,
When the load from the hood 14 acting on the hood hinge 18 is less than a predetermined value, the hood 1
The shaft 28 serving as the rotation center of No. 4 is held at the holding position shown in FIG. For this reason, the rotation center of the hood 14 can be made hard to fluctuate during normal hood opening and closing, and operability is improved.

As shown in FIG. 10, the collision body 52 comes into contact with a portion of the hood 14 facing the rear of the hood hinge 18 when the vehicle is running, and the load acting on the hood hinge 18 from the hood 14 is reduced to a predetermined value. When it is over,
As shown in FIG. 11, the rear edge 14B of the hood 14 strokes downward (in the direction of arrow C in FIG. 11). Therefore, the release portion 40C of the wire 40 is pressed from above, and the engagement between the hook portion 40B of the wire 40 and the shaft 28 is released.

As a result, the shaft 28 and the link 22
Is moved downward (in the direction of arrow B in FIG. 11) around the rotation center, and the hood-side arm 20 supported by the shaft 28 moves downward (in the direction of arrow A in FIG. 11). For this reason, since the entire hood 14 moves downward, the load generated on the collision body 52 can be reduced as compared with the case where the hood-side arm 20 is deformed around the shaft 28.

In this embodiment, as shown in FIG. 12, when the hood 14 is opened, the inner panel 15 at the rear end portion 14B of the hood 14 interferes with the release portion 40C of the wire 40, Is pressed in the direction in which it is wound around the shaft 28 (the direction of arrow D in FIG. 12) to be deformed. Therefore, when the hood 14 is open, the hook 40
B and the shaft 28 do not easily come off, and the hood 14 can be reliably supported.

In this embodiment, since the wire 40 connects the convex portion 54 of the base plate 24 and the link 22, the link 22 can be reliably supported by the wire 40, and the load from the hood 14 can be reduced to a predetermined value. When the value exceeds the value, the support of the link 22 is surely released and the link 2 is released.
2 rotates down.

In this embodiment, the hood hinge 18
When the release portion 40C of the wire 40 disposed at the rear of the hood 14 is pressed down by the rear end edge 14B of the hood 14, the connection between the wire 40 and the shaft 28 is released. When a load equal to or more than a predetermined value acts from substantially above the vehicle, the connection between the wire 40 and the shaft 28 can be reliably released.

Further, in this embodiment, since the wire 40 applies a tension to the link 22 in advance that substantially balances the own weight of the hood 14, the attachment of the wire 40 during normal use is strengthened, and the wire 40 is prevented from coming off. Can be prevented.

In the present embodiment, the use of the metal wire 40 allows the hood hinge 18 to be made compact and lightweight, which facilitates production and tuning of tension.

As shown in FIG. 13, the rear end of the wire 40 in the hood hinge 18 of the first embodiment is
Like the rear end of the wire 40 in the second embodiment, S
It may be configured to be curved in a letter shape.

Next, a third 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. 14, in this embodiment,
Instead of the link 22 of the first embodiment, the base plate 2
4, a link portion 60 extending obliquely upward and rearward.
Are formed integrally, and a portion of the base plate 24 excluding the link portion 60 is a base portion 62. A notch 66 is formed from the inside in the vehicle width direction at a bent portion 64 that is a boundary between the base portion 62 and the link portion 60, and the link portion 60 is located below the bent portion 64 as a center (in the direction of arrow E in FIG. 14). ). Note that a flange portion 68 is formed upward at an inner end in the vehicle width direction of the base portion 62.

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

In the present embodiment, similar to the first embodiment,
When the load from the hood 14 acting on the hood hinge 18 is less than a predetermined value, the hood 1
The shaft 28 serving as the rotation center of No. 4 is held at the holding position shown in FIG. For this reason, the rotation center of the hood 14 can be made hard to fluctuate during normal hood opening and closing, and operability is improved.

On the other hand, as shown in FIG. 15, the collision body 52 abuts on a portion of the hood 14 facing the front portion of the hood hinge 18 when the vehicle is running, and the load from the hood 14 acting on the hood hinge 18 is applied. Is greater than or equal to a predetermined value, the outer panel 21 abuts the reinforcement 17, and the front portion of the hood side arm 20 of the hood hinge 18 strokes downward (in the direction of arrow A in FIG. 15). Therefore, the claw 36 of the hood-side arm 20 moves downward, the hook 40A of the wire 40 is pushed downward by the claw 36, and the engagement between the hook 40A and the claw 32C is released.

As a result, the shaft 28 and the link portion 60 rotate downward (in the direction of the arrow E in FIG. 15) about the bent portion 64, and the hood-side arm 20 supported by the shaft 28 moves downward (the arrow in FIG. 15). (A direction). As a result, the entire hood 14 moves downward, so that the impact body 52 is
Can be reduced.

In this embodiment, since the link portion 60 is formed integrally with the rear end of the base plate 24 instead of the link 22 of the first embodiment, the structure is simple and the manufacture is easy.

In this embodiment, the notch 66 is formed from the inside in the vehicle width direction at the bent portion 64 which is the boundary between the base portion 62 and the link portion 60. Instead, as shown in FIG. By forming a portion 68A in which the height H of the flange portion 68 formed upward on the inner end portion in the vehicle width direction of the base portion 62 is reduced in the bent portion 64, the link portion 60 is centered on the bent portion 64. It is also possible to adopt a configuration in which it is easy to rotate downward (in the direction of arrow E in FIG. 16).

Next, a fourth 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 will be omitted.

As shown in FIG. 17, in this embodiment,
At the rear of the base plate 24, there is formed a mounting bracket 70 extending upward from the upper wall 16A of the apron upper member 16.
The link 22 is rotatably supported by a shaft 30. At the front of the base plate 24, a hook portion 72 extending downward from the upper wall portion 16A of the apron upper member 16 is formed, and the hook portion 40A of the wire 40 is engaged with the hook portion 72. ing.

As shown in FIG. 18, a spring portion 74 which is bent in a wave shape as a flexible portion is formed at an intermediate portion of the wire 40 so that the spring portion 74 extends when tension is applied to the wire 40. Has become. A stopper 76 is formed at the upper end of the mounting bracket 70. The link 22 is in contact with the stopper 76, and the wire 4
The tension of 0 causes the link 22 to move forward (arrow F in FIG. 18).
Direction).

The hook portion 72 of the base plate 24
The center P3 of the shaft 30 is slightly offset downward with respect to the straight line S1 connecting the point of engagement P1 of the shaft 40 with the center P2 of the shaft 28, and the distance L1 between P2 and P3 on the link 22 Is set shorter than the distance L2 between P1 and P2.

Therefore, when the hood 14 moves downward for some reason, the shaft 28 on the link 22 rotates downward (in the direction of arrow G in FIG. 18) about the shaft 30. that time,
The position of the wire 40 indicated by the two-dot chain line L2 in FIG. 18, that is, the position where P1, P2, and P3 are aligned (the position where the center P2 is the dead point) by the extension of the spring portion 74
When the shaft 28 moves, the extension of the wire 40 is maximized. When the load acting on the hood hinge 18 from the hood 14 is less than the predetermined value T2 and the center P2 of the shaft 28 does not exceed the dead point indicated by the two-dot chain line L2, the link 22 is turned on by the spring effect of the wire 40. It returns to the original holding position. On the other hand, when the load acting on the hood hinge 18 from the hood 14 is equal to or more than the predetermined value T2 and the center P2 of the shaft 28 exceeds the dead point indicated by the two-dot chain line L2, the link 22 is turned on by the spring effect of the wire 40. The shaft 30 is lowered downward (in the direction of arrow G in FIG. 18) about the shaft 30.

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

In this embodiment, when the load acting on the hood hinge 18 from the hood 14 is less than the load value T1,
Due to the tension of the wire 40, the shaft 28 serving as the center of rotation of the hood 14 is held at the holding position shown in FIG. For this reason, the rotation center of the hood 14 can be made hard to fluctuate during normal hood opening and closing, and operability is improved.

On the other hand, the hood 14 is pressed by a human hand or the like, so that the load acting on the hood hinge 18 from the hood 14 is equal to or greater than the load value T1 and the predetermined value T2 (T2> T2)
If the value is less than 1), the shaft 28 on the link 22 rotates downward (in the direction of arrow G in FIG. 18) about the shaft 30.
18 does not exceed the dead point indicated by the two-dot chain line L2 in FIG. 18, the link 22 returns to the original position due to the spring effect of the wire 40.

Further, the collision body 52 comes into contact with a portion of the hood 14 facing the rear portion of the hood hinge 18 when the vehicle is running or the like, so that the load acting on the hood hinge 18 from the hood 14 becomes equal to or more than the load value T1, and Value T2 (T2>
When T1 is less than T1), the shaft 28 on the link 22 rotates downward (in the direction of the arrow G in FIG. 18) about the shaft 30.
Since the center P2 of 8 does not exceed the dead point indicated by the two-dot chain line L2 in FIG. 18, the link 22 returns to the original position due to the spring effect of the wire 40. At this time, since the entire hood 14 moves slightly downward, the load generated on the collision body 52 can be reduced from the initial stage of the collision.

When the collision body 52 comes into contact with a portion of the hood 14 facing the rear portion of the hood hinge 18 when the vehicle is running or the like, and the load acting on the hood hinge 18 from the hood 14 exceeds a predetermined value T2. , The center P2 of the shaft 28 exceeds the dead point indicated by the two-dot chain line L2 in FIG. 18, and as shown in FIG. 19, the link 22 is lowered about the shaft 30 by the spring effect of the wire 40 (arrow G in FIG. 18).
Direction). For this reason, since the entire hood 14 moves downward, the load generated on the collision body 52 can be reduced as compared with the case where the hood-side arm 20 is deformed around the shaft 28.

The collision body 52 is attached to the mounting bracket 70.
If it collides with a part on the hood 14 that does not face
Since the hood 14 and the mounting bracket 70 do not interfere with each other, the entire hood 14 can move further downward than the position shown in FIG.

In this embodiment, since the wire 40 connects the hook portion 72 of the base plate 24 and the link 22, the link 22 can be reliably supported by the wire 40 and the load from the hood 14 is kept at a predetermined value. When the value T1 has been reached, the link 22 surely rotates down.

In the present embodiment, since the wire 40 applies a tension to the link 22 in advance, which is substantially balanced with the weight of the hood 14, the attachment of the wire 40 during normal use is strengthened, and the detachment of the wire 40 is prevented. Can be prevented.

Further, in the present embodiment, the use of the metal wire 40 allows the hood hinge 18 to be made compact and lightweight, thereby facilitating production and tuning of tension.

In the present embodiment, the spring portion 74 bent in a wave shape is formed in the middle portion of the wire 40. However, the shape of the spring portion 74 is not limited to the wave shape, and as shown in FIG. Other shapes such as a spiral shape may be used.

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 included within the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, instead of the metal wire 40, another member such as a bracket made of metal, a resin wire, a resin bracket, or a connecting member made of an elastic material such as rubber may be used. Further, the positioning claw 44 or the stopper 76 may be eliminated, and the tension of the wire 40 and the weight of the hood 14 may be balanced.

[0090]

According to the first aspect of the present invention, when the load from the hood is less than a predetermined value, the center of rotation of the hood is held at a predetermined holding position, and the load from the hood is reduced. A rotation center holding means for lowering the rotation center of the hood from the holding position when it is equal to or more than a predetermined value makes it difficult for the rotation center of the hood to fluctuate during normal opening and closing of the hood and reduces the load generated on the collision body. It has an excellent effect of being able to.

According to the second aspect of the present invention, when the load from the hood is less than a predetermined value, the center of rotation of the hood moves within a lower region where the hood can return to a predetermined holding position. When the load from the hood is greater than or equal to a predetermined value, the hood has a rotation center holding means for moving the rotation center of the hood to a lower position where it cannot be returned to the holding position,
It has an excellent effect that the center of rotation of the hood is hardly fluctuated when the hood is normally opened and closed, and the load generated on the collision body can be reduced.

According to a third aspect of the present invention, there is provided a hood hinge structure for a vehicle, wherein the arm connects the hood to the center of rotation of the hood, the base is attached to the vehicle body, and the link connects the arm and the base. And a support member that supports the link portion when the load from the hood is less than a predetermined value, and releases the support of the link portion when the load from the hood is equal to or more than the predetermined value. In addition, there is an excellent effect that the rotation center of the hood is hardly fluctuated and the load generated on the collision body can be reduced.

According to a fourth aspect of the present invention, there is provided a hood hinge structure for a vehicle, wherein the arm connects the hood to the center of rotation of the hood, the base is attached to the vehicle body, and the link connects the arm and the base. And, when the load from the hood is less than a predetermined value, the link portion is supported, and when the load from the hood is equal to or more than a predetermined value, a supporting member for rotating and lowering the link portion is provided. This has an excellent effect that the rotation center of the hood is hardly fluctuated and the load generated on the collision body can be reduced.

According to a fifth aspect of the present invention, in the vehicle hood hinge structure according to any one of the third and fourth aspects, the support member connects one of the base portion and the vehicle body to the link portion. Therefore, in addition to the effects described in any one of claims 3 and 4, there is an excellent effect that the link portion can be reliably supported and the support of the link portion is surely released or the link portion is surely rotated down. .

According to a sixth aspect of the present invention, in the vehicle hood hinge structure according to any one of the third to fifth aspects, the arm portion connects the one of the base portion and the vehicle body to the support member. In order to cancel, in addition to the effect according to any one of claims 3 to 5, at the front of the hood hinge, when a load acts from substantially above the vehicle, one of the base and the vehicle body, This has an excellent effect that the connection with the support member can be reliably released.

According to a seventh aspect of the present invention, in the vehicle hood hinge structure according to any one of the third to fifth aspects, the hood releases the connection between the support member and the link portion. In addition to the effect described in any one of 5 above, there is an excellent effect that the connection between the support member and the link portion can be reliably released when a load acts from substantially above the vehicle at the rear portion of the hood hinge.

According to an eighth aspect of the present invention, in the hood hinge structure for a vehicle according to any one of the third to seventh aspects, the support member applies a tension to the link portion in advance in proportion to the weight of the hood. In addition to the effects described in any one of Items 3 to 7, there is an excellent effect that the support member can be prevented from coming off during normal use.

According to a ninth aspect of the present invention, in the vehicle hood hinge structure according to any one of the third to seventh aspects, the support member has a flexible portion. In addition to the effects described above, there is an excellent effect that the generated load can be reduced from the initial stage when the collision body collides with the hood.

The present invention according to claim 10 provides the method according to claim 3,
In the hood hinge structure for a vehicle according to any one of 5, 6, 7, and 9, since the link portion and the base portion are integrated,
In addition to the effects described in any one of the third, fifth, sixth, seventh, and ninth aspects, there is an excellent effect that the structure is simple and the manufacturing is easy.

The present invention according to claim 11 provides the invention according to claims 3 to 9
In the hood hinge structure for a vehicle according to any one of the above, since the support member is a metal wire, in addition to the effect according to any one of claims 3 to 9, the support member can be made compact and lightweight, and production and It has an excellent effect that tuning is easy.

[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 inside the vehicle.

FIG. 2 is an enlarged perspective view showing a part of the hood hinge structure of the vehicle according to the first embodiment of the present invention, as viewed from the front inside the vehicle diagonally.

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

FIG. 4 is an operation explanatory view of the hood hinge structure of the vehicle according to the first embodiment of the present invention.

FIG. 5 is a sectional view taken along the line 5-5 in FIG. 3;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 3;

FIG. 7 is an operation explanatory view of the hood hinge structure of the vehicle according to the first embodiment of the present invention.

FIG. 8 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. 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 inside the vehicle.

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

FIG. 11 is an operation explanatory view of a hood hinge structure of 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 sectional view showing a hood hinge structure of a vehicle according to a modification of the first and second embodiments of the present invention.

FIG. 14 is a perspective view showing a hood hinge structure of a vehicle according to a third embodiment of the present invention, as viewed obliquely from the front inside the vehicle.

FIG. 15 is a side sectional view showing a hood hinge structure of a vehicle according to a third embodiment of the present invention.

FIG. 16 is a perspective view showing a hood hinge structure of a vehicle according to a modified example of the third embodiment of the present invention, as viewed from an obliquely front inner side.

FIG. 17 is a perspective view showing a hood hinge structure of a vehicle according to a fourth embodiment of the present invention, as viewed obliquely from the front inside the vehicle.

FIG. 18 is a side sectional view showing a hood hinge structure of a vehicle according to a fourth embodiment of the present invention.

FIG. 19 is an operation explanatory view of a hood hinge structure for a vehicle according to a fourth embodiment of the present invention.

FIG. 20 is a side sectional view showing a hood hinge structure of a vehicle according to a modification of the fourth embodiment of the present invention.

FIG. 21 is a side sectional view showing a hood hinge structure of a vehicle according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automobile body 14 Hood 16 Apron upper member 18 Hood hinge 20 Hood side arm (arm part) 22 Link (rotation center holding means, link part) 24 Base plate (base part) 28 axis 30 axis 32 Base plate bracket part 32C Bracket part Claw part 40 Wire (rotation center holding means, support member) 40C Wire release part 52 Collision body 56 Base plate through hole 60 Link part (rotation center holding means) 62 Base part 70 Base plate mounting bracket part 72 Base plate hook part 74 Spring part (flexible part) of wire

 ──────────────────────────────────────────────────続 き 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 Pacific Industrial Co., Ltd. F Terms (reference) 3D004 AA03 AA04 BA02 CA14 CA17

Claims (11)

[Claims] When the load from the hood is less than a predetermined value, the rotation center of the hood is held at a predetermined holding position. When the load from the hood is equal to or more than a predetermined value, the rotation center of the hood is moved from the holding position. A hood hinge structure for a vehicle, comprising a rotating center holding means for lowering. 2. When the load from the hood is less than a predetermined value, the center of rotation of the hood is moved within a lower area where the hood can return to a predetermined holding position. A hood hinge structure for a vehicle, comprising rotation center holding means for moving a rotation center to a lower position where the rotation center cannot be returned to the holding position. 3. An arm for connecting the hood to the center of rotation of the hood, a base attached to the vehicle body, a link for connecting the arm and the base, and a load from the hood being less than a predetermined value. And a support member that supports the link portion when the load from the hood is equal to or greater than a predetermined value, and releases the support of the link portion. 4. An arm for connecting the hood to the center of rotation of the hood, a base attached to the vehicle body, a link for connecting the arm and the base, and a load from the hood being less than a predetermined value. A hood hinge structure for a vehicle, comprising: a support member that supports the link portion when the load from the hood is greater than or equal to a predetermined value. 5. The hood hinge for a vehicle according to claim 3, wherein the support member connects one of the base portion and the vehicle body to the link portion. Construction. 6. The vehicle according to claim 3, wherein the arm portion releases a connection between one of the base portion and the vehicle body and the support member. Hood hinge structure. 7. The hood releases the connection between the support member and the link portion.
A hood hinge structure for a vehicle according to any one of the above. 8. The hood hinge structure for a vehicle according to claim 3, wherein the support member applies a tension to the link portion in advance in proportion to a weight of the hood. 9. The hood hinge structure for a vehicle according to claim 3, wherein the support member has a flexible portion. 10. The hood hinge structure for a vehicle according to claim 3, wherein the link portion and the base portion are integrated. 11. The hood hinge structure for a vehicle according to claim 3, wherein the support member is a metal wire.