JP2550065B2 - Car body front structure - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a vehicle body front structure.

2. Description of the Related Art Among the bodies of automobiles, for example, as disclosed in Japanese Patent Laid-Open No. 61-92965, in order to automatically assemble the vehicle body and interior parts and vehicle parts, 2. Description of the Related Art A so-called modularization of a vehicle body is known, in which the interior parts and vehicle parts are mounted on each of the vehicle body component parts that are divided into component parts and assembled on separate lines, and then these components are combined and integrated.

Problems to be Solved by the Invention In the modularization of the vehicle body as described above, compared with a vehicle body having a monocoque structure, the coupling area between the vehicle body constituent parts tends to be small, and the vehicle body rigidity tends to be weakened. is there. In addition, at the part where the hood ridge including the hood ridge reinforcement in the front part of the vehicle body, the cowl box and the front pillar are joined together, the side part of the cowl box serves as a drainage channel that guides and discharges the invading water inside the cowl box to the outside of the vehicle. Therefore, it is necessary to have a panel matching structure that prevents the water from flowing from the side part of the cowl box to the cabin side by superimposing the side part of the cowl box on the waist part of the front pillar.

Therefore, the present invention can improve the rigidity of the vehicle body by dividing the hood ridge reinforcement into a front hood ridge reinforcement and a rear hood ridge reinforcement without impairing the assemblability and waterproofness of the vehicle body. The present invention provides a front structure for an automobile body.

Means for Solving Problems A structure in which an engine compartment equipped with vehicle parts and interior parts and a body side assembly are joined together, and the side edge of the dash upper panel extends from the cowl box to the outside of the vehicle body. While forming the side portion, the flange is extended forward from the waist portion of the front pillar, the flange is screwed to the rear end of the side portion of the cowl box, and has a substantially L-shaped cross section, A rear hood ridge reinforcement with a flange is provided at the lower end of the wall, and the front and rear ends of the rear hood ridge reinforcement are screwed to the front hood ridge reinforcement and the front pillar respectively, while the rear hood ridge reinforcement is above the rear hood ridge reinforcement. Screw the wall tip to the upper surface of the cowl box, and then install the flange of the vertical wall above. The J is screwed to the tip of the side of the cowl box.

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

As shown in FIGS. 1 to 5, the vehicle body of this embodiment is roughly divided into an engine compartment A, a floor assembly B, a rear end assembly C, left and right body side assemblies D, and a roof assembly E. After the vehicle body components are manufactured on separate lines and the necessary vehicle parts and interior parts are assembled, these parts are joined together to form a hood, front window glass, side door, back The doors will be assembled later.

Here, the engine compartment A is a dash lower panel 1 and a cowl box 2 which is horizontally mounted on the upper edge of the dash lower panel 1.
Further, the left and right hood ridges 3 and the like are provided forward from the side edge of the dash lower panel 1 and the side edge of the cowl box 2, respectively. The cowl box 2 has a closed cross section including a cowl top panel 2a as a partition wall on the engine room side, a dash upper panel 2b as a partition wall on the cabin side, and a cowl side panel 2c as a partition wall on the vehicle width direction side. . A portion of the dash upper panel 2b that extends outward of the cowl side panel 2c in the vehicle width direction is a side portion 2d that is set at a lower side portion of the cowl box 2. The invading water in the cowl box 2 is introduced to the side portion 2d by the cowl side panel 2c of the dash upper panel 2b.
A drip channel portion 2e guided and discharged from the main plate portion between them to the outside of the vehicle is formed to bulge downward. The cowl box 2 is located diagonally rearward and upward from the rear edge of the side portion 2d.
The side flange 2f of is extended. This side flange 2f
And a peripheral edge of the side portion 2d is formed with a screw insertion hole 4 penetrating in the vertical direction. A plurality of mounting holes penetrating in the vertical direction is formed in the joint flange portion 2g as a horizontal mounting surface portion of the side portion of the cowl box 2 which constitutes a joint portion between the upper edge portion of the cowl side panel 2c and the side portion of the cowl top panel 2a. The part 5 is formed. The mounting hole portion 5 is composed of a screw insertion hole 5a penetrating the joint flange portion 2g and a weld nut 5b coaxially joined to the rear surface of the upper edge portion of the cowl side panel 2c. Further, a plurality of mounting holes 6 are formed in the side flange 1a of the dash lower panel 1 which is continuously provided downward from the side portion 2d so as to penetrate in the vehicle width direction. These mounting hole portions 6 are screw insertion holes 6a penetrating the side flange 1a.
And a weld nut 6b coaxially joined to the back surface of the side flange 6a.

The above-mentioned body side assembly D uses the 2-box 3-door hatchback type vehicle in this embodiment, so that the front pillar 7, the center pillar 8, the rear pillar are used.
It is equipped with 9, side sills 10, rear fenders 11, roof side rails not shown. West pillar 7a of front pillar 7
A front flange 7b is provided on the front surface. The front flange 7b extends horizontally from the lower end of the inner flange 7d of the pillar upper portion 7c to the outer side in the vehicle width direction. The front side flange 7b is formed with a plurality of mounting hole portions 12 penetrating in the vertical direction.
These mounting hole portions 12 correspond in position to the plurality of screw insertion holes 4 formed at the rear end of the side portion 2d, and are coaxial with the screw insertion holes 12a penetrating the front flange 7b. It is composed of a weld nut 12b joined to the back surface of the front flange 12a. The inner flange 7d is formed with a plurality of mounting hole portions 13 penetrating in the vertical direction. These mounting hole portions 13 correspond in position to the plurality of screw insertion holes 4 of the side flange 2f, and the screw insertion holes penetrating the inner flange 7d.
13a and a weld nut 13b coaxially joined to the back surface of the inner flange 7d. A dash side panel 14 is extended forward on the vehicle outer side wall of the pillar lower portion 7e of the front pillar 7. A plurality of screw insertion holes 15 penetrating in the vehicle width direction are formed at the front edge of the dash side panel 14. These screw insertion holes 15
The positions correspond to the plurality of mounting holes 6 of the side flange 1a. An upper flange 14a is provided at an upper edge portion of the dash side panel 14 so as to extend outward in the vehicle width direction. The upper flange 14a has a plurality of mounting hole portions 16 penetrating vertically.
Has been formed. These mounting hole portions 16 correspond in position to the plurality of screw insertion holes 4 formed in the outer edge portion of the side portion 2d, and the screw insertion holes 16a penetrating the upper flange 14a and the upper flange which is coaxial therewith. It is composed of a weld nut 16b joined to the back surface of 14a. Further, the front wall 7f of the pillar upper portion 7c has a mounting hole portion 17 penetrating diagonally in the vertical direction.
Has been formed. The mounting hole portion 17 is composed of a screw insertion hole 17a penetrating the front wall 7f and a weld nut 17b coaxially joined to the rear surface of the front wall 7f. A plurality of mounting holes 18 penetrating in the vehicle width direction are formed in the vehicle outer side wall 7g of the pillar upper portion 7c. These mounting hole portions 18 are composed of a screw insertion hole 18a penetrating the vehicle outer side wall 7g and a weld nut 18b coaxially joined to the rear surface of the vehicle outer side wall 7g. Then, as shown in FIG. 3, the side portion 2d and the side flange 2f of the cowl box 2 are superposed on the front side flange 7b, the upper side flange 14a, and the inner side flange 7d of the front pillar 7, and the bolt 19 is attached from above. Is connected to the mounting hole portions 12, 13, 16 from the screw insertion hole 4 and the dash side panel 14 is overlapped with the side flange 1a of the dash upper panel 1 so that the bolt 20 is screwed from the outer side in the vehicle width direction.
The front pillar 7 of the body side assembly D is joined to the cowl box 2 and the dash lower panel 1 of the engine compartment A by fastening the bolts from 15 to the mounting hole 6.

On the other hand, 21 is a hood ridge reinforcement, and as shown in FIGS. 1 to 3, a front hood ridge reinforcement 22 and a cowl box 2 which are connected to the hood ridge 3.
It is divided into a rear hood ridge reinforcement 23 that defines a closed cross section S on the side. The front hood ridge reinforcement 22 is formed in a substantially U-shape, and upper and lower flanges 22c, 2b formed by bending the upper and lower side walls 22a, 22b which face each other.
2d is joined to the upper flange 3a and the vertical wall 3b of the hood ridge 3 as a single body before forming the engine compartment A by welding, for example, in the vehicle width direction, and the front and rear sides are cooperated with the hood ridge 3. It forms a closed cross section that extends in the direction. The rear end of the lower wall 22b is a cowl box 2
Is superposed and bonded under the front edge of the side portion 2d. A mounting hole 24 is formed at the rear end of the upper side wall 22a so as to penetrate therethrough in the vertical direction. The mounting hole 24 is formed on the upper side wall 22a.
And a weld nut 24b which is coaxial with the screw insertion hole 24a and which is joined to the back surface of the upper side wall 22a. Front Hood Ridge Rain Force 22 Vertical Wall
A plurality of mounting hole portions 25 penetrating in the vehicle width direction are formed in 22e. These mounting hole portions 25 are composed of a screw insertion hole 25a penetrating the vertical wall 22e and a weld nut 25b coaxially joined to the rear surface of the vertical wall 22e. The rear hood ridge reinforcement 23 includes a vertical wall 23a and an upper wall 23b extending from the upper end of the vertical wall 23a toward the inner side in the vehicle width direction,
Cowl box 2, Hood ridge 3, Front pillar 7
And the front hood ridge reinforcement 22 across. Overhanging wall 2 at the lower front of the vertical wall 23a
3c is extended. An arcuate notch 26 is formed in the projecting wall 23c. The notch portion 26 is formed so as to extend forward from the upper portion of the side flange 1a formed in the arc shape of the dash lower panel 1 described above. A rim 27 is formed in the notch 26 by bending toward the inner side in the vehicle width direction. A rear end portion 23d of the vertical wall 23a is obliquely cut along the pillar upper portion 7c. A plurality of screw insertion holes 28, 29, 30, 31 penetrating in the vehicle width direction are formed in the front edge portion 23e and the rear edge portion 23d of the vertical wall 23a and the upper edge portion 23f and the rear edge portion 23g of the projecting wall 23c. I am doing it. These screw insertion holes 28 to 31 are used for the front pillar 7.
The position corresponds to the mounting hole 18, the mounting hole 6 of the dash lower panel 1, and the mounting hole 25 of the front hood ridge reinforcement 22. A lower end portion 23h of the vertical wall 23a has a cutout portion 32 that extends over the drip channel portion 2e of the cowl box 2. A lower flange 23i is bent and formed outward in the vehicle width direction at a portion of the lower edge portion 23h in front of and behind the cutout portion 32. The lower flange 23i is formed with a plurality of screw insertion holes 33 penetrating in the vertical direction. The positions of these screw insertion holes 33 correspond to the plurality of mounting hole portions 16 formed on the upper flange 14a of the dash side panel 14. Further, the pillar upper portion 7 is provided at the rear of the upper wall 23b.
A rear side flange 23j inclined along the front wall 7f of c is extended. A screw insertion hole 34 is formed in the rear flange 23j so as to penetrate diagonally in the vertical direction. The screw insertion hole 34 corresponds in position to the mounting hole portion 17 of the front pillar 7. A front flange 23k is horizontally extended on the vertical wall 23a side of the front part of the upper wall 23b. A screw insertion hole 35 is formed in the front flange 23k so as to penetrate therethrough in the vertical direction. This screw insertion hole 35
Is the mounting hole 24 of the front hood ridge reinforcement 22
And the position correspond. An upper flange 23l is horizontally formed on an inner edge of the upper wall 23b in the vehicle width direction. The upper flange 23l is formed with a plurality of screw insertion holes 36 penetrating in the vertical direction. The positions of these screw insertion holes 36 correspond to the plurality of mounting hole portions 5 of the cowl box 2. And
This rear hood ridge reinforcement 23 is a front hood ridge reinforcement 22, hood ridge 3, cowl box 2, dash lower panel 1, etc. in engine compartment A, front pillar 7, center pillar 8, rear pillar 9, side sill 10, rear fender. 11, After assembling the body side assembly D including roof side rails (not shown), it is screwed across the front hood ridge reinforcement 22, hood ridge 3, cowl box 2, front pillar 7, dash side panel 14, etc. ing. Specifically, as shown in FIG. 1, the rear edge portion 23d of the rear hood ridge reinforcement 23 is attached to the vehicle outer side wall 7g of the front pillar 7 from the outer side in the vehicle width direction via the screw insertion hole 28 and the mounting hole portion 18. The screw 37 is coupled, the lower flange 23i is superposed on the side portion 2d, and the upper flange 14a of the dash side panel 14 is screwed through the screw insertion holes 33, 4 and the mounting hole portion 16 and coupled with the screw 37 from above. The edge portion 23e and the upper edge portion 23f are attached to the vertical wall 22e of the front hood ridge reinforcement 22 with screw insertion holes 29, 30 and a mounting hole portion.
25 and the screw 37 from the outside in the vehicle width direction via the rear edge 23
By overlapping d with the dash side panel 14, the side flange 1a of the dash lower panel 1 is screwed 37 from the outside in the vehicle width direction through the screw insertion holes 31 and 15 and the mounting hole 6, and the rear flange 23j is front. A screw 37 is connected to the front wall 7f of the pillar 7 from a diagonally upper front side through a screw insertion hole 34 and a mounting hole portion 17,
The front flange 23k is screwed 37 from above to the mounting hole 24 of the upper side wall 22a of the front hood ridge reinforcement 22, and the upper flange 23l is screwed 37 from above to the joint flange 2g of the cowl box 2.

According to the above-described structure of the embodiment, the front hood 7 of the body side assembly D is moved forward with the rear hood ridge reinforcement 23 removed, and the dash lower panel 1, the cowl box 2, and the hood ridge 3 of the engine compartment A are removed. Butt against the connecting part, the side part 2d is superposed on the front side flange 7b, and the side part flange 2f is inside flange.
By superimposing on 7d and connecting them with a screw 37, the waterproof property of the fitting portion between the cowl box 2 and the front pillar 7 can be secured. Moreover, in order to assemble the rear hood ridge reinforcement 23 to the intermediate assembly consisting of the engine compartment A and the body side assembly D, after mounting the rear hood ridge reinforcement 23 from above from the cowl box 2 and the front pillar 7, Since the screws 37 can be joined from above, obliquely above, and the outside in the vehicle width direction, the assembling property of the rear hood ridge reinforcement 23 is also good. Further, the upper flange 23l is formed horizontally from the upper wall 23b, and the upper flange 23l is screwed onto the horizontal joint flange portion 2g of the cowl box 2 from above.
Although not shown, compared to the structure in which the upper flange of the rear hood ridge reinforcement is extended upward from the upper wall, the rear hood ridge reinforcement 23, the side portion 2d, and the cowl side panel 2c are not shown. It is possible to increase the height of the closed cross section S separated by and to improve the rigidity of the vehicle body.

As described above, according to the present invention, by connecting the front and rear ends of the rear hood ridge reinforcement to the front hood ridge reinforcement and the front pillar, respectively,
While ensuring a sufficient coupling area between the engine compartment and body side assembly, the upper wall tip of the rear hood ridge reinforcement is coupled to the upper surface of the cowl box, and the flange at the lower end of the vertical wall of the reinforcement is attached to the side of the cowl box. Since the closed cross section is formed on the lateral side of the cowl box by being connected to the tip of the part, it is possible to sufficiently secure the strength and rigidity of the vehicle body by the module construction method.

Further, since the flange extending forward from the waist portion of the front pillar is coupled to the rear end of the side portion of the cowl box, it is possible to prevent the drainage from the cowl box from flowing around to the cabin side.

Further, upon assembling, the flange of the front pillar may be screwed to the rear end of the side portion of the cowl box, and then the rear hood ridge reinforcement may be attached, which does not hinder the work.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembled state of an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is an exploded perspective view showing the same embodiment. FIG. 4 is an exploded perspective view of the cowl box and the periphery of the front pillar of the same embodiment, and FIG. 5 is a perspective view of the automobile of the same embodiment. 2 ... Cowl box, 2g ... Joining flange part (mounting surface part), 3 ... hood ridge, 7 ... front pillar, 21
...... Food Ridge Reinforce, 22 ...... Front Hood Ridge Reinforce, 23 …… Rear Hood Ridge Reinforce, 23l …… Upper flange, S …… Closed cross section.

Claims (1)

(57) [Claims] 1. A structure in which an engine compartment including a vehicle part and an interior part, respectively, and a body side assembly are joined together, wherein a side edge of a dash upper panel extends from a cowl box to the outside of the vehicle body. The front pillar, the flange portion is extended forward from the waist portion of the front pillar, and the flange is screwed to the rear end of the side portion of the cowl box. A rear hood ridge reinforcement having a flange at its lower end is provided, and front and rear ends of the rear hood ridge reinforcement are screwed to the front hood ridge reinforcement and the front pillar, respectively, while the upper wall tip of the rear hood ridge reinforcement is provided. Screw the upper part of the cowl box to the upper part of the cowl box, The front structure of the vehicle body, which is screwed to the tip of the side of the box.