JPH0419279A - Car body front part structure for automobile - Google Patents

Abstract

PURPOSE:To prevent the generation of uncomfortable noise and to improve rigidity by locating a strength member, through which a hood ridge reinforcement member is coupled to a front side member, to the outside of a hood ridge panel. CONSTITUTION:A strength member 15 is disposed in a position facing a first cross member 11 along the lateral direction of a car body similarly to the first cross member 11. An inclination part 17 thereof is brought into an inclination state approximately similar to that of a rise part 14 of the first cross member 11. Since the inclination state 17 of the strength member 15 is separated away from a horizontal part 2, a lower vertical part 4, and a corner part 19 of a hood ridge panel 1, a stiffening plate 20 to improve strength is joined with flanges 16 of the separating parts. Since, by locating the so formed strength member 15, the first cross member 11, a front side member 9, and reinforcement 6, all being a high rigidity member, are all in a connected state, rigidity of the front part of a car body is sharply improved.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to the front structure of an automobile body.

<Prior art> Examples of the conventional car body front structure include those shown in Figs. 1)" D-1
See pages 6-17]. Reference numeral 1 denotes a pair of left and right hood ridge panels, each of which has a symmetrical shape in which an upper vertical part 3 is bent at the outer end of a horizontal part 2, and a lower vertical part 4 is bent at the inner end. A flange 5 bent further inward is formed at the upper end of the upper vertical portion 3 of this hood ridge panel 1, and a foot ridge reinforcement member (hereinafter simply referred to as "reinforce") 6 is attached to this flange 5. It is joined from the outside along the longitudinal direction of the vehicle body (direction A in the figure). A pair of left and right radiator core side panels 7 having a symmetrical shape are attached to the front end of the hood ridge panel 1, and a pair of left and right radiator core side panels 7 are installed between the front ends of each reinforcement 6. radiator core support upper 8 is located.

On the other hand, the upper end portions of the closing plates 10 of the front side members 9 (both left and right) are joined from the inside to the lower vertical portions 4 of the pair of left and right hood ridge panels 1. has been done. And 11 is the first cross member (cross member)
The closing plate 12 is arranged along the left-right direction of the vehicle body (direction B in the figure) and is joined to the lower side.
It has a closed cross-section structure. At both ends of this first cross member 11, rising portions 14 with flanges 13 are formed in an inclined state, and the flanges 13 of these rising portions 14 are abutted against the pair of left and right front side members 9, respectively. By joining in this state, the left and right front side members 9 are connected to each other.

<Problems to be Solved by the Invention> However, in such a conventional car body front structure, the front end of the car body had insufficient rigidity and was easily deformed. In other words, loads F in opposite directions are applied to both left and right ends of the front part of the vehicle body.
The amount of deformation of the vehicle body was large when loading F1 and F2 respectively. Therefore, the vehicle body tends to vibrate while the vehicle is running, and the vibrations generate vibration noise that is unpleasant for the occupants.

Therefore, in the past, the thickness of the entire vehicle body panel was intentionally increased, ignoring the weight increase.

The present invention has been made with attention to such conventional technology, and it is an object of the present invention to provide a highly rigid vehicle body front structure that does not generate unpleasant vibration noise.

Means for Solving the Problems> In order to achieve the above object, the vehicle body front structure according to the present invention is arranged on the outside of the hood ridge panel,
Additionally, a strength member is provided to connect the hood ridge reinforcement member and the front side member.

<Function> By connecting the hood ridge reinforcement member and front side member with a strength member, all of the cross member, front side member, and hood ridge reinforcement member, which are originally high-rigidity members, are connected continuously. The rigidity of the front part of the vehicle body is improved.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described based on the drawings. Incidentally, the same reference numerals are given to the parts common to the conventional one, and redundant explanation will be omitted.

FIGS. 1 and 2 are diagrams showing an embodiment of the present invention. Reference numeral 15 denotes a strength member, which has a generally inverted hat shape in cross section with a flange 16 around the upper part, and has flanges 16 on the outer side of the closing plate 10 of the front side member 9 and the horizontal part 2 of the hood ridge panel 1, respectively. The joined inclined portion 17 and this inclined portion 17
It consists of an upper vertical part 3 of the hood ridge panel l and a vertical part 18 which is bent vertically from the top and has a flange J6 joined to the reinforcement 6, respectively. This strength member 1
5 are disposed at positions corresponding to the first cross member 11 and along the left-right direction of the vehicle body like the first cross member 11, and the inclined portion 17 thereof is approximately corresponding to the rising portion 14 of the first cross member 11. It is in a tilted state. Furthermore, since the inclined portion 17 of this strength member 15 is spaced apart from the corner portion 19 between the horizontal portion 2 and the lower vertical portion 4 in the hood ridge panel 1,
A backing plate 20 is connected to the flange 16 at this spaced apart portion to improve strength.

By providing such a strength member 15, the first cross member 11, front side member 9, and reinforcement 6, which are highly rigid members, are all connected, so that the rigidity of the front portion of the vehicle body is significantly increased. Therefore, the front part of the vehicle body (hood ridge panel 1, radiator core site panel 7, etc.) is less likely to vibrate, and unpleasant vibration sounds are not generated.

FIGS. 3 and 4 are diagrams showing other embodiments of the present invention.

The first cross member 21 according to this embodiment has an inverted hat shape in cross section, and has a closed cross section structure with a closing plate 22 joined to the upper side. An extension part 25 serving as a "strength member" is formed on the rising part 23 of the first cross member 21 and passes through the front side member 24 and is joined to the hood ridge panel 1 and the reinforcement 6. This extension part 25 also has a cross-sectional shape corresponding to the first cross member 21, and includes an inclined part 26 whose outer part is along the horizontal part 2 of the hood ridge panel 1, and this inclined part. 26 and a vertical portion 27 integrally formed with a bend, the closing plate 2 has an extended inclined portion 26.
2 has a closed cross-sectional structure. And this extension part 2
The flange 33 of 5 is attached to the horizontal part 2 of the hood ridge panel 1.
, the upper vertical portion 3 and the reinforcement 6, respectively. The front side member 24 according to this embodiment has a larger vertical width than the previous embodiment, and the extension portion 25 can be incorporated into the inner side portion 24a and the outer closing plate 28 from the front side. As shown in FIG.
．． Slanted flanges 31 and 32 are formed at the upper and lower ends of 30, respectively, to be joined to the extension part 25 after assembly.

Therefore, in this embodiment as well, as in the previous embodiment, "
By providing the extension part 25 as a "strength member", the first cross member 21, front side member 24, and reinforcement 6, which are highly rigid members, are all connected, so the rigidity of the front part of the vehicle body is significantly increased. .

<Effects of the Invention> The vehicle body front structure of the present invention has the content as described above, and has a structure in which the hood ridge reinforcement member and the front side member are connected by a strength member, thereby achieving high height. Since the cross member, front side member, and hood ridge reinforcement member, which are rigid members, are all connected, the rigidity of the front portion of the vehicle body is improved. Therefore, the front part of the car body is less likely to vibrate,
No unpleasant vibration noise is generated.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing only the right side of a vehicle body front structure according to an embodiment of the present invention, FIG. 2 is a partially sectional side view seen from the direction indicated by the arrow in FIG. 1, and FIG. A perspective view corresponding to FIG. 1 according to another embodiment of the present invention, FIG. 4 is a partially sectional side view seen from the direction indicated by the arrow in FIG. 3, and FIG. 5 shows a conventional vehicle body front structure. A perspective view, and FIG. 6 is a perspective view seen from the direction indicated by the arrow ▪ in FIG. 1- Hood ridge panel 6 °゛゛ Hood ridge reinforcement member 9.24゛'' Front side member 11.21 -
° First cross member (cross member) 15 -゛ Strength member 25 °・° Extension part (strength member) A - 1. Vehicle body longitudinal direction B - Vehicle body lateral direction Fig. 5 Fig. 6

Claims (1)

[Claims] A pair of left and right hood ridge panels having a symmetrical shape are connected with a hood ridge reinforcement member on the outer side of the upper part and a front side member on the inner side of the lower part, respectively, along the longitudinal direction of the vehicle body, and In the vehicle body front structure of an automobile in which the front side members are connected to each other by a cross member extending in the left-right direction of the vehicle body, the front side member is arranged on the outside of the hood ridge panel, and is connected to the hood ridge reinforcement member and the front side member. A front body structure for an automobile, characterized in that a strength member is provided to connect the front body of the vehicle.