JPH0620712Y2 - Hood ridge structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION -Industrial field of application- The present invention relates to a vehicle body of an automobile, and more particularly to a structure of a hood ridge portion thereof.

-Prior Art-As is well known, the hood ridge portion of the monocoque body of an automobile is usually made to have a structure as shown in Figs. 4 and 5, for example. That is, reference numeral “1” in FIG. 4 is a hood ridge panel whose top and bottom are reinforced by a hood ridge reinforcement 2 and a front side member 3 in the vehicle front-rear direction. A strut house 4 for attaching a shock absorber or the like of a front suspension (not shown) is joined. More specifically, a base flange 5 corresponding to the upper side surface 1a, the shoulder surface 1b, and the lower side surface 1c of the hood ridge panel 1 is integrally bent and formed at the base portion of the strut house 4 formed in a hollow tower shape. The base flange 5 is the opening flange 6 of the hood ridge panel 1.
The hood lid panel 1 and the strut house 4 are assembled by spot welding. (For example, see Sankaidou Co., Ltd. “Automotive Engineering Complete Book Vol. 13 Car Body of Passenger Car”) By the way, in such a hood ridge structure, due to a collision of the car body or getting on a sudden change in the road surface, the strut house 4 may be damaged. A strong external force F in the front-rear direction of the vehicle body may act on the upper part. When such an external force F acts, the hood ridge panel 1 and the strut house 4 are deformed as shown by the phantom line in FIG. That is, since the strut house 4 itself is molded into a hollow tower shape having relatively high rigidity, it does not deform so much, but the opening flange 6 and the base flange 5 are not deformed.
Since the joint portion due to becomes a sudden change in cross section and the bending rigidity is not high, the joint portion is largely deformed as illustrated. Therefore, in the above-mentioned conventional hood ridge structure, since the support rigidity of the strut house 4 becomes small, the flexural rigidity of the strut house 4 itself cannot be sufficiently exerted, which may cause vehicle body vibration or "road noise". It was

-Object of the Invention- The object of the present invention is to obtain a structure that can obtain a high support rigidity of a strut house in consideration of the problems of the conventional hood ridge structure as described above.

-Structure of the Invention-To achieve this object, the present invention relates to a hood ridge structure of an automobile in which a base flange of a strut house is welded to an opening flange of the hood ridge panel. At least one of the opening flange and the base flange to
The end flange of the opening flange is folded inside the peripheral wall of the strut house and the end is joined to the peripheral wall, and the base flange is connected to the hood ridge. It is proposed to join the panel to form a box-shaped cross section.

-Embodiment- Hereinafter, the embodiment of the present invention will be described in detail with reference to Figs.

1 and 2 show a hood ridge structure according to a first embodiment of the present invention, in which the hood ridge panel 1 is reinforced at the top and bottom with a hood ridge reinforcement 2 and a front sidement 3 in the vehicle longitudinal direction. At the upper part of the hood ridge panel 1 in the engine room, a base flange 5A of a strut house 4 formed in a hollow tower shape is provided. The hood ridge panel 1 has an upper side surface 1a, a shoulder surface 1b, and a lower side surface 1.
It is the same as the conventional one in that spot welding is performed over c. In the case of the first embodiment, the opening flange 6A from the shoulder surface 1b to the lower side surface 1c of the hood ridge panel 1 is
The U-shaped cross section is embossed, and both sides of this embossed portion are spot-welded in two rows on a wide base flange 5A in two rows. The feature of this embodiment is that the end portion 6a of the opening flange 6B bent into a "U" shape is folded inside the peripheral wall 4a of the strut house 4 and the end portion 6a is bent.
It is at the point where a is welded to the corresponding peripheral wall 4a.

Since the hood ridge structure according to the first embodiment has the above-described structure, the base of the strut house 4 has the opening flange 6A and the base flange 5A combined with the box-shaped cross-sectional view, and the opening flange 6B. The support rigidity is enhanced by the welded end portion 6a. Therefore, even if a strong external force F in the front-rear direction of the vehicle body acts on the upper portion of the strut house 4, the joint between the hood ridge panel 1 and the strut house 4 is not deformed. Road noise "can be reduced.

3 is a sectional view of a hood ridge structure according to a second embodiment of the present invention, which is equivalent to FIG.
The point is that the opening flange 6C and the base flange 5C, which are each folded in a V shape, are combined. That is, the opening flange 6C of the hood ridge panel 1 is bent upward and the tip 6b of the opening flange 6C is welded to the inner surface of the strut house 4 to form the base flange 5C of the strut house 4.
Is folded downward and the lower end 5a of the strut house 4 is welded to the shoulder surface 1b of the hood ridge panel 1.

Therefore, even with such a structure, the opening flange 6C of the hood ridge panel 1 and the base flange 5C of the strut house 4 can be combined in a box shape, so that the bending rigidity of the same portion is enhanced. This is the same as the case of each of the above described embodiments.

-Effect of the Invention- As is clear from the above description, according to the present invention, the support rigidity of the strut house is enhanced, so that the vibration of the vehicle body and the "road noise" during traveling due to the deformation of the base of the strut house are reduced. There is an effect that can be done. Further, according to the present invention, the end of the opening flange is joined to the peripheral wall of the strut house (Y-plane joining), and the base flange is joined to the hood ridge panel (Z-plane joining) so that the direction of the joining surface is changed. Since they are different, no matter what direction the input is applied to the strut house, the input is applied to the one joint surface in the step direction, increasing the joint strength between the hood ridge panel and the strut house. You can

[Brief description of drawings]

1 is a perspective view of a hood ridge structure according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG.
The figure shows a second hood ridge structure according to a second embodiment of the present invention.
FIG. 4 is a perspective view of a conventional hood ridge structure, and FIG. 5 is a sectional view taken along line VV of FIG. 1 ... Hood ridge panel, 1b ... Shoulder surface 1c ... Lower side surface 4 ... Strut house, 5A, 5C ... Base flange, 6B, 6C ... Opening flange.

Claims (1)

[Scope of utility model registration request] 1. In a hood ridge structure for an automobile, in which a base flange of a strut house is welded to an opening flange of a hood ridge panel, at least the opening flange and the base flange extending from a shoulder surface to a lower side surface of the hood ridge panel. One of them is formed into a "U" or "U" -shaped cross section, and the end of the opening flange is folded inside the peripheral wall of the strut house to join the end to the peripheral wall. Is joined to the hood ridge panel to form a box-shaped cross section.