JPH0531021Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to the body structure of an automobile, and particularly to the front structure of a hood for a vehicle.

BACKGROUND OF THE INVENTION As is well known, a reinforcement member is used at the front of a rear-hinged engine hood of an automobile to strengthen the supporting rigidity of a hood lock striker. That is, FIGS. 3 and 4 show conventional engine hoods, in which a front space is formed between a hood outer panel A and a hood inner panel B at the center of the front part of the engine hood, and a hood lock striker C is welded in advance. A U-shaped rain force member D is disposed in the front space, and this rain force member D is welded to the hood inner panel B (see Publication No. 58486/1986).

Problems to be Solved by the Invention However, in such an engine hood front structure, the front part of the engine hood outer panel A is not reinforced, so in order to lock the engine hood, the front part of the engine hood outer panel A is If you put your hand on it and push it forcefully downward, the front part will bend locally, causing a so-called "pekotsuki" feeling, which will impair the quality of the car body. Also, food lock striker C
In order to ensure sufficient support rigidity, it is necessary to use a heavy and thick reinforcement member D, which increases the weight of the vehicle.

Purpose of the invention The purpose of the invention is to reduce the weight of the hood lock striker mounting part by taking into consideration the problems of the front structure of the conventional engine hood as described above, and to create an engine that does not cause local deformation of the engine hood. There is to obtain the front structure of the hood.

Structure of the Invention In order to achieve this object, the present invention provides a front structure of a vehicle hood in which a hood lock striker is fixed to a reinforcement member. An upper reinforcement member having a hat-shaped cross section, a hole in the upper surface, and a rib bent downward around the hole is fixed to the mounting flange at a plurality of welding points. The welding points are set to be staggered in the front and back so that the welding points on the rear side correspond to the welding points on the front side, and the upper surface of the upper reinforcement member is connected to the lower surface of the vehicle hood outer panel. This paper proposes a front structure for a vehicle hood that is bonded to a hood.

Embodiment Hereinafter, details of an embodiment of the present invention will be explained with reference to FIGS. 1 and 2.

FIG. 2 is a sectional view corresponding to FIG. 4 of the engine hood according to the present invention, and shows a hood outer panel 1 and a hood inner panel 2 that constitute the engine hood.
A front space is formed in the front of the engine hood in which a reinforcement member 3 disposed at the center of the engine hood in the vehicle width direction can be incorporated. As can be understood from a comparison with Fig. 4, the reinforcement member 3, which is long in the width direction of the vehicle, is made by bending a thin metal plate into a "U" shape in cross section, and has a mounting window formed in the center of the bottom wall 3a. A hood lock striker 4 is welded to 3b. When assembled with the hood inner panel 2, the hood lock striker 4 is projected downward from the engine hood through the mounting hole 2a on the lower surface of the hood inner panel 2, and faces a hood lock on the vehicle body side (not shown). The reinforcement member 3 shown in detail in FIG. 1 has front and rear mounting flanges 3 on its upper part.
c, 3d, and these mounting flanges 3c, 3
d, an upper reinforcement member 5 having a hat-shaped cross section is welded to the reinforcement member 3 in a box shape. That is, in order to strengthen the assembly rigidity of the reinforcement member 3 and the upper reinforcement member 5, in the illustrated example, the mounting flanges 3c, 3
For d, a plurality of welding ears 3e, 3f arranged in a "zigzag" manner in the width direction of the vehicle are integrally molded, and these welding ears 3e, 3f are spot welded to the lower surface of the upper reinforcement member 5. The overall bending rigidity is strengthened. The upper reinforcement member 5 made of a thin metal plate has an outer peripheral flange 5a formed in steps by press working on its peripheral edge to strengthen its overall bending rigidity, and is further aligned in the width direction of the upper reinforcement member 5. The surface rigidity of the surface wall portion 5c of the upper reinforcement member 5 is reinforced by frame-shaped ribs 5b formed on the peripheral edges of the plurality of weight-reducing holes 6. The front wall portion 5c of the upper reinforcement member 5 is adhered to the lower surface of the hood outer panel 1 using adhesive 7 at a plurality of locations.

In the illustrated embodiment, a part of the hood inner panel 2 is deformed to form a stepped portion 2b in order to receive the aforementioned outer peripheral flange 5a and mounting flanges 3c, 3d. This formation also increases the rigidity of the hood inner panel 2 itself.

Since the illustrated embodiment has the above structure,
Hood outer panel 1 and hood inner panel 2
Before assembling with the hood lock striker 4.
The upper reinforcement member 5 is assembled to the reinforcement member 3 to which the upper reinforcement member 5 is fixed. That is, the rain force member 3 and the upper rain force member 5, which are assembled in advance into a box-like cross section, are attached to the hood inner panel 2.
The reinforcement member 3 is placed on top of the hood and is spot welded to the same hood inner panel 2. During this spot welding, the welding head can be inserted into the interior of the reinforcement member 3 through the weight reduction hole 6 described above, so that the reinforcement member 3 and It becomes possible to assemble the upper reinforcement member 5 in advance.

Furthermore, in the fully assembled state shown in FIG. 2, the reinforcement member 3 and the upper reinforcement member 5 are combined in a box shape, so even if they are constructed from lightweight thin metal plates, sufficient support rigidity for the hood lock striker 4 can be maintained. Can be secured. Of course, in the illustrated structure, the surface rigidity and bending rigidity of the upper reinforcement member 5 are strengthened by processing the outer peripheral flange 5a and the frame-shaped rib 5b, so that the wall thickness of the upper reinforcement member 5 can be extremely reduced.

In the illustrated structure, the hood outer panel 1
When pushing down the engine hood with your hand on the front part of the engine, the external force applied to the hood outer panel 1 is borne by the highly rigid upper reinforcement member 5 and the reinforcement member 3 via the adhesive 7. This also prevents the car body from being deformed and spoiling the quality of the car body.

Effects of the invention As is clear from the above explanation, according to the invention, the lightweight upper reinforcement member and the reinforcement member are combined in a box shape to ensure the rigidity of the attachment part of the hood lock striker, thereby reducing the weight of the same part. Moreover, since the upper reinforcement member is bonded to the hood outer panel, it is possible to obtain a high-quality vehicle body that prevents local deformation of the hood outer panel when closing the vehicle hood.

[Brief explanation of the drawing]

Figure 1 is an exploded view of the main parts of the front part of a vehicle hood according to the present invention, Figure 2 is a cross-sectional view of the front part of the vehicle hood corresponding to Figure 4, and Figure 3 is a partially cutaway view of a conventional vehicle hood. A perspective view of the hood, FIG. 4 is a sectional view taken along the - line in FIG. 3. 3... Rainforce member, 3b, 3c... Mounting flange, 4... Hood lock striker, 5
...Upper reinforcement member.

Claims (1)

[Scope of utility model registration request] In the front structure of a vehicle hood in which a hood lock striker is fixed to a reinforcement member, mounting flanges are bent and formed at the front and back of the upper part of the reinforcement member, which has a U-shaped cross section long in the vehicle width direction. An upper reinforcement member having a hole and a rib bent downward around the hole is fixed to the mounting flange at a plurality of welding points. A front part of a vehicle hood characterized in that the welding points on the sides are set to be alternately located in the front and back so that the welding points correspond to each other, and the upper surface part of the upper reinforcement member is adhered to the lower surface of the vehicle hood outer panel. structure.