JPH05155355A - Engine hood structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The reinforcing members can be crossed, whereby the rigidity required for the engine hood can be secured and the impact on the abutting object can be sufficiently mitigated. The purpose is to obtain an engine hood structure. [Structure] The reinforcing portion 20 of the engine hood inner panel 16 of the engine hood 12 includes a plurality of first reinforcing portions 22.
And a plurality of second reinforcing portions 24. First
At the intersection 26 of the reinforcing portion 22 and the second reinforcing portion 24 of
The bottom portion 22C of the first reinforcing portion 22 and the bottom portion 24C of the second reinforcing portion 24 are continuous with each other, and a circular through hole 28 having the crossing portion 26 as a fragile portion is formed substantially at the center of these connecting portions. Has been drilled. In addition, the first reinforcing portion 22 and the second reinforcing portion 2
At the intersection 26 with the side wall 4, the side wall 22 of the first reinforcing portion 22
D and the side wall portion 24D of the second reinforcing portion 24 are continuous with each other, and a circular through hole 30 having the crossing portion 26 as a fragile portion is formed substantially at the center of these connecting portions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle engine hood structure.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, an engine hood 70 of an automobile generally includes an outer panel 72 and an inner panel 74 as a reinforcing member for the outer panel 72. Also, the inner panel 74 is
It is provided on the inner side surface of the outer panel 72 and forms the skeleton of the engine hood 70 of the automobile.
The rigidity of is secured.

Further, as shown in FIG. 9, the inner panel 74 has a hat-shaped cross section with its opening facing the outer panel 72, and the flanges 74A and 74B of the inner panel 74 are bonded to the outer panel 72, respectively. They are joined together via an agent to form a closed cross section 76.

Thus, the engine hood 70 of the automobile
Is reinforced by a closed cross section 76 composed of an outer panel 72 and an inner panel 74 so that the engine hood 70 is not easily deformed by wind pressure or the like.

[0005]

However, in the engine hood of an automobile, when a person or the like comes into contact with the engine hood, the engine hood is positively deformed so that a large impact does not act on the abutting object. Therefore, it is necessary to protect the contact object.

For this reason, in the engine hood of an automobile, it is difficult to adopt a structure in which a plurality of reinforcing members are arranged in a grid, which is a structure that can most effectively reinforce the engine hood. That is, when a plurality of reinforcing members are arranged in a lattice pattern, the intersections of the plurality of reinforcing members are
It becomes a part with higher rigidity than other parts on the engine hood, and this part makes it easy for the abutting object to receive a strong impact.

In consideration of the above facts, the present invention allows the reinforcing members to cross each other, whereby the rigidity required for the engine hood can be ensured and the impact on the abutting object can be sufficiently mitigated. The purpose is to obtain an engine hood structure that is capable.

[0008]

An engine hood structure according to claim 1 of the present invention is an engine hood structure having a plurality of reinforcing members provided in an inner part of the engine hood in a state of intersecting with each other. The crossing portion of the reinforcing member is a fragile portion that is easily deformed by a load from above the engine hood.

[0009]

In the engine hood structure according to the first aspect of the present invention, the intersecting portion of the plurality of reinforcing members provided in the inner portion of the engine hood so as to intersect with each other forms a fragile portion that is easily deformed by a load from above the engine hood. Since it has become
When a person or the like comes into contact with the engine hood, it becomes a high-rigidity portion on the engine hood in the related art, and the crossing portion of the reinforcing member, which is apt to receive a strong impact on the abutting object, is easily deformed. Therefore, in the engine hood structure of the present invention, the reinforcing members can be crossed, whereby the rigidity required for the engine hood can be ensured, and
Since the intersecting portion of the reinforcing member is easily deformed, the impact on the abutting object can be sufficiently reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the engine hood structure of the present invention will be described with reference to FIGS.

As shown in FIG. 5, the front body 10A of the vehicle body 10 of the automobile is provided with an engine hood 12 that covers the upper part of the engine room. The engine hood 12 is attached to the front body 10A so as to be openable and closable by a hinge (not shown).

As shown in FIG. 4, the engine hood 12 includes an engine hood outer panel 14 forming an outer side portion of the vehicle body (upper side portion of FIG. 4) and an inner portion of the engine hood outer panel 14 (lower side of FIG. 4). Section) and an engine hood inner panel 16 provided in the section).

As shown in FIG. 2, the engine hood outer panel 14 is a substantially rectangular flat plate. Further, the engine hood inner panel 16 includes a substantially rectangular peripheral edge portion 18 provided along the outer peripheral edge portion 14A of the engine hood outer panel 14, and a plurality of reinforcing members provided inside the peripheral edge portion 18 in a grid pattern. And the reinforcing portion 20 as

As shown in FIG. 4, a peripheral edge portion 18 of the engine hood inner panel 16 has a hat-shaped cross section with the opening portion facing the engine hood outer panel 14 side, and an outer flange formed at the opening end portion. 18A is hemmed to the outer peripheral edge portion 14B of the engine hood outer panel 14. On the other hand, the inner flange 18B formed at the open end of the peripheral portion 18 is joined to the engine hood outer panel 14 from the inside of the engine room via an adhesive.

As shown in FIG. 2, a plurality of reinforcing portions 20 of the engine hood inner panel 16 extend parallel to each other from the front right side of the vehicle body (lower left side in FIG. 2) to the rear left side of the vehicle body (upper right side in FIG. 2). 2 and a plurality of second reinforcing portions 24 extending from the front left side of the vehicle body (lower right side in FIG. 2) to the rear right side of the vehicle body (upper left side in FIG. 2) in parallel with each other. ing.

As shown in FIG. 4, each of the first reinforcing portion 22 and the second reinforcing portion 24 has a hat-shaped cross section with the opening facing the engine hood outer panel 14 side, and the opening end is formed at the opening end. The formed flanges 22A and 22B and the flanges 24A and 24B are joined to the engine hood outer panel 14 from the inside of the engine room via an adhesive.

As shown in FIG. 2, the first reinforcing portion 22 and the second reinforcing portion 24 are connected to each other by a crossing portion 26, and these crossing portions 26 are as shown in FIG. , Substantially coincides with the measurement point P of the engine hood impact test.

As shown in FIG. 1, at the intersection 26 of the first reinforcing portion 22 and the second reinforcing portion 24, the first reinforcing portion 2 is formed.
The second bottom portion 22C and the bottom portion 24C of the second reinforcing portion 24 are continuous with each other, and the crossing portion 26 is provided approximately at the center of these connecting portions.
A circular through hole 28 having a weak portion is formed. In addition, the intersection 2 of the first reinforcing portion 22 and the second reinforcing portion 24.
6, the side wall portion 22D of the first reinforcing portion 22 and the side wall portion 24D of the second reinforcing portion 24 are continuous with each other, and a circular shape having the crossing portion 26 as a fragile portion is formed substantially at the center of these connecting portions. Through holes 30 are formed.

Next, the operation of this embodiment will be described. In the engine hood structure of this embodiment, the engine hood 12
Crossing portion 2 of a plurality of reinforcing portions 20 of the engine hood inner panel 16 provided in the inner portion of the vehicle in a state of crossing each other.
6 is provided by the through hole 28 and the through hole 30 as a fragile portion that is easily deformed by the load from above the engine hood 12. Therefore, when a person or the like comes into contact with the engine hood 12, the through hole 28 and the through hole 30 serve as starting points and the engine hood 12 is deformed. Therefore, the crossover portion 26 of the reinforcing portion 20, which has conventionally been a high-rigidity portion on the engine hood 12 and the abutting object is likely to receive a strong impact.
Easily deforms. Therefore, in the engine hood structure of the present embodiment, the reinforcing portion 20 can be crossed, so that the rigidity required for the engine hood 12 can be secured and the crossing portion 26 of the reinforcing portion 20 can be easily formed. Since it is deformed into, it is possible to sufficiently reduce the impact on the contact object.

Although the through hole 28 and the through hole 30 are circular in this embodiment, the shape of the through hole is not limited to a circular shape, and may be another shape, for example, as shown in FIG. The through hole 28 may have a cross shape, and the through hole 30 may have an oval shape, or may have another shape.

Next, the second part of the engine hood structure of the present invention
An example will be described with reference to FIG. 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. 7A, in this embodiment, notches 32 and 34 having the crossing portion 26 as a weak portion are formed in the vicinity of the crossing portion 26. That is, the notch 32
Is formed in the vicinity of the crossing portion 26 so as to straddle the side wall portion 22D and the bottom portion 22C of the first reinforcing portion 22 which face each other, and the notch 34, in the vicinity of the crossing portion 26, faces each other. The second reinforcing portion 24 is formed so as to straddle the side wall portion 24D and the bottom portion 24C.

Therefore, also in this embodiment, when a person or the like comes into contact with the engine hood 12, the notches 32 and 3 are formed.
Starting from point 4, the crossing portion 26 of the reinforcing portion 20 of the engine hood inner panel 16 is deformed. For this reason, in the engine hood structure of the present embodiment, the reinforcing portions 20 can be crossed, whereby the rigidity required for the engine hood 12 can be secured and the reinforcing portion 20 can be secured.
Since the intersecting portion 26 of is easily deformed, the impact on the contact object can be sufficiently mitigated.

In the present embodiment, the notches 32 and 34 are formed near the intersection 26, but instead of this, FIG.
As shown in (B), the notch 32 and the notch 34 may be formed so as to intersect with each other at the intersecting portion 26, and a bead may be provided in place of the notch 32 and the notch 34. good.

[0025]

According to the present invention, since the crossing portion of the reinforcing member is a fragile portion which is easily deformed by the load from above the engine hood, the reinforcing member can be crossed, and thus the engine hood is required. In addition to ensuring the rigidity, the crossing portion of the reinforcing member is easily deformed, so that the impact on the abutting object can be sufficiently mitigated.

[Brief description of drawings]

FIG. 1 is a perspective view showing an intersecting portion of an engine hood inner panel of an engine hood structure of a first embodiment of the present invention.

FIG. 2 is a plan view showing the engine hood structure of the first embodiment of the present invention.

FIG. 3 is a plan view showing a measurement point P in an engine hood impact test of the engine hood structure of the first embodiment of the present invention.

4 is a sectional view taken along line 4-4 of FIG.

FIG. 5 is a perspective view showing a vehicle body to which the engine hood structure of the first embodiment of the present invention is applied.

FIG. 6 is a perspective view showing another shape of the through hole of the engine hood structure of the first embodiment of the present invention.

FIG. 7 (A) is a perspective view showing an intersecting portion of the engine hood inner panel of the engine hood structure of the second embodiment of the present invention, and (B) is a cutaway view of the engine hood structure of the second embodiment of the present invention. It is a perspective view which shows the other shape of a notch.

FIG. 8 is a plan view showing a conventional engine hood structure.

9 is a sectional view taken along line 9-9 of FIG.

[Explanation of symbols]

 10 Vehicle Body 10A Front Body 12 Engine Hood 14 Engine Hood Outer Panel 16 Engine Hood Inner Panel 20 Reinforcement Part (Reinforcement Member) 22 First Reinforcement Part 24 Second Reinforcement Part 26 Crossover Part 28 Through Hole 30 Through Hole 32 Notch 34 Cut Lack

Claims (1)

[Claims] 1. An engine hood structure having a plurality of reinforcing members provided in an inner portion of an engine hood so as to intersect with each other, wherein the intersecting portions of the plurality of reinforcing members are easily deformed by a load from above the engine hood. An engine hood structure characterized by being a fragile part.