JPH0725352A - Car body structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Disclosing the vehicle body structure of an automobile that disperses the deformation force of the strut tower in the vehicle body and easily absorbs a large input from the front of the vehicle body [Structure] Strut tower 20 supporting a wheel and hood ridge panel 21 and a front vertical wall portion 22b of the cowl top panel 22 in a region surrounded by a substantially horizontal reinforcing panel 25.
, The curved portion 33 of the reinforcing panel is joined to the strut tower 20, the flange 34 of the reinforcing panel 25 is joined to the hood ridge panel 21, and the flange 35 of the reinforcing panel 25 is attached to the front vertical wall portion of the cowl top panel 22. It is characterized in that the bead 31 and 32 are formed on the reinforcing panel 25 along the front vertical wall portion 22b of the cowl top panel 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure for an automobile in which rigidity near a strut tower in an engine room is reinforced.

[0002]

2. Description of the Related Art Conventionally, as a vehicle body structure for reinforcing the rigidity in the vicinity of a strut tower, one disclosed in Japanese Utility Model Publication No. 1-123779 is known.

FIG. 6 shows this vehicle body structure.
The structure of this vehicle body structure is such that the cowl box 6 below the windshield and the hood ridge panel 1 arranged on the vehicle body side are connected to each other at the corner portion from the upper wall of the cowl box 6 to the hood ridge. The first gusset 7 extending to the vertical wall of the panel 1 is joined to the strut tower 3
A second gusset 8 extending from the upper wall of the strut tower 3 to the vertical wall of the hood ridge panel 1 is joined to a corner portion where the rear side portion and the hood ridge panel 1 are continuously provided,
The front end portion of the first gusset 7 and the rear end portion of the second gusset 8 are superposed and joined to each other, and the gas stay bracket 9 of the engine hood is attached to the superposed portion of the first gusset 7 and the second gusset 8. The feature is that it is fixed.

[0004]

However, in the conventional vehicle body structure as described above, the corner portions are reinforced by the gussets, but the first gusset 7 and the second gusset 8 are respectively reinforced by the gussets. The entire surface is only joined to the cowl box 6 and the hood ridge panel 1, the hood ridge panel 1 and the strut tower 3, and is not reinforced by a separate surface on the rear extension of the upper surface of the strut tower mounting surface, so the front wheel When a force is applied to the strut tower 3 toward the upper side of the vehicle body by pushing up, the stress of the deformation of the strut tower 3 is likely to concentrate on the hood ridge panel 1 and the air boss 6, and a further reinforcing structure for opposing this stress is provided. It is necessary, and is a factor of increase in vehicle weight and cost. Further, since the structure between the hood ridge panel 1 and the cowl box 6 is simply reinforced, there is also a problem that the rigidity of this portion is too high to absorb energy against a large input from the front of the vehicle body.

The vehicle body structure of an automobile according to the present invention focuses on such a problem. With a simple structure, even if an input is applied to the strut tower toward the upper part of the vehicle body due to the push-up of the wheels, the bending deformation due to this input is caused. It is an object of the present invention to efficiently disperse the thrust input of the strut tower by supporting the vehicle, and to provide a vehicle body structure of an automobile that easily absorbs energy against a large input from the front of the vehicle body.

[0006]

In order to solve the above-mentioned problems, a vehicle body structure according to claim 1 of the present invention has a strut tower in which the upper part of a strut for supporting the vehicle body is supported and mounted. In a vehicle body structure in which a side portion of a cowl top panel projects from a hood ridge panel into an engine room and a portion of the hood ridge panel behind the strut tower is joined, the strut tower, the cowl top panel, and the hood ridge are provided. A reinforcing panel extending substantially horizontally is arranged in a space surrounded by the panel, and a front portion of the reinforcing panel is joined to at least one of an upper surface and a rear vertical wall surface of the strut tower to form the reinforcing panel. One side of the reinforcement panel is joined to the inner vertical wall of the hood ridge panel, and the rear portion of the reinforcement panel is Characterized in that it is joined to the front vertical wall of the Le top panel.

According to a second aspect of the present invention, there is provided the vehicle body structure according to the first aspect, wherein the reinforcing panel of the vehicle body structure is provided with a bead extending along at least a front vertical wall portion of the cowl top panel. It is characterized by

[0008]

According to the vehicle body structure for an automobile according to claim 1 of the present invention, when the wheel is pushed up and the strut tower is to be deformed rearward or toward the center of the vehicle body by the shock absorbing member, the reinforcing panel is the strut tower. In the space surrounded by the cowl top panel and hood ridge panel,
Since it extends substantially horizontally and one side and the rear are joined to the inner vertical wall of the hood ridge panel and the front vertical wall of the cowl top panel respectively, input is made in the shearing direction at these joints. Can receive. Therefore, the reinforcing panel does not come off from the hood ridge panel and the cowl top panel, and the input can be reliably transmitted to the hood ridge panel and the cowl top panel via the reinforcing panel to be dispersed.

Further, according to the vehicle body structure of an automobile according to claim 2 of the present invention, in addition to the above-mentioned action, when a large force is input from the front of the vehicle body and the strut tower is deformed to the rear of the vehicle body, it is reinforced. Buckling is promoted by the beads in the panel, and the collision energy is absorbed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle body structure according to an embodiment of the present invention will be described below with reference to the drawings.

1 to 5 respectively show the vehicle body structure of this embodiment. In these figures, reference numeral 20 is a strut tower on which the upper part of a strut for supporting the vehicle body is supported, and reference numeral 21 is a side portion of the vehicle body. A hood ridge panel arranged, reference numeral 22 is a cowl top panel forming an upper portion of the air box, reference numeral 23 is a dash upper panel forming a lower portion of the air box, reference numeral 24 is a dash panel dividing a vehicle compartment from an engine room, Reference numeral 25 indicates a reinforcing panel extending substantially horizontally, and reference numeral 26 indicates a cowl top reinforcing plate fixed on the dash upper panel 23.

The strut tower 20 projects into the engine room 27 from a hood ridge panel 21 formed with a plurality of beads 29 extending in the vertical direction. The upper surface of the strut tower 20 is located below the front flange 22a of the cowl top panel 22 in this embodiment. As shown in FIG. 4, the front flange 22a of the cowl top panel 22, the front end 23a of the dash upper panel 23, and the upper flange 24a of the dash panel 24 form a triple joint portion 28 that is triple joined.

As shown in FIG. 3, a portion of the hood ridge panel 21 on the outer side of the vehicle body is reinforced by a bead 29 provided in a vertical direction. Hood ridge panel 21
The side portion of the cowl top panel 22 is joined to the rear portion of the strut tower 20. Strut tower 20, cowl top panel 22 and hood ridge panel 2
A reinforcing panel 25 is arranged in a space C surrounded by 1.

As shown in FIG. 4, the reinforcing panel 25 has a front side slightly inclined and a rear side substantially horizontal. As shown in FIG. 5, the reinforcing panel 25 is provided with beads 31 and 32 extending in a hook shape from a horizontal portion to a front inclined portion. Specifically,
As shown in FIG. 2, the beads 31 and 32 extend along the hood ridge panel 21 from the strut tower 20 toward the cowl top panel 22, and then extend along the front vertical wall portion 22b of the cowl top panel 22. .

A curved portion 33 is formed on the front end of the reinforcing panel 25 along the corners of the rear upper surface 20a of the strut tower 20 to the rear side wall surface 20b. The curved portion 33 extends from the rear upper surface 20a of the strut tower 20 to the rear portion thereof. Side wall surface 20
It joins along the corner of b. A flange 34 is formed at the end of the reinforcing panel 25 on the side of the hood ridge panel 21 and is bent upward in the vertical direction.
Is joined to the hood ridge panel 21.

A flange 35 is formed at the rear end of the reinforcing panel 25 so as to be bent along the front vertical wall portion 22b of the cowl top panel 22, and the flange 35 is formed on the cowl top panel 22. It is joined to the front vertical wall portion 22b. The roots of the flanges 35 are the front flange 22a of the cowl top panel 22, the front end 23a of the dash upper panel 23, and the dash panel 24.
Is located on the triple joint portion 28 where the upper flange 24a and the upper flange 24a are triple-joined.

A cowl top reinforcing plate 26 bent into the above-mentioned L-shape is disposed inside the air box of the front vertical wall portion 22b of the cowl top panel 22.
The cowl top reinforcing plate 26 is a dash upper panel 2
3 and the front vertical wall portion 22b of the cowl top panel 22
And the flange 35 of the reinforcing panel 25.

A flange 36 which is bent downward is formed at the end of the reinforcing panel 25 on the center side of the engine room 27. The bent ridge portion of the flange 36 is curved in an arc shape or an elliptical shape to improve the rigidity of the reinforcing panel 25 against deformation. The flange 36 starts from the rear of the strut tower 20 and ends before it hits the triple joint portion 28 and immediately before being parallel to the front vertical wall portion 22b of the cowl top panel 22. A notch 37 is formed near the end of the flange 36 of the reinforcing panel 25, as shown in FIG. 5, to promote the buckling of the reinforcing panel 25 in the horizontal direction.

The beads 31 and 32 are recessed in the shape of a round groove, and extend from the hood ridge panel 21 to the cowl top panel 2.
It is bent like a hook along 2 and the tip of the bead 31 faces the notch 37.

Next, the operation of the vehicle body structure according to this embodiment will be described.

When the strut of the front wheel is pushed up from the road surface and the strut tower 20 is pushed upward, a deforming force that acts to displace the vertical wall portion 20b of the strut tower 20 upward of the vehicle body is applied.
Further, the deformation force transmitted to the upper portion of the strut tower 20 is transmitted to the reinforcing panel 25 via the curved portion 33, and the reinforcing panel 25 is a space surrounded by the strut tower 20, the cowl top panel 22, and the hood ridge panel 21. The reinforcing panel 25 is formed with flanges 34 and 35 and is joined to the inner vertical wall portion 21a of the hood ridge panel 21 and the front vertical wall portion 22b of the cowl top panel 22 respectively. Therefore, it is possible to receive an input in the shear direction at these joints. Therefore, the reinforcing panel 25 can be surely transmitted to the hood ridge panel 21 and the cowl top panel 22 through the reinforcing panel 25 without being peeled off from the hood ridge panel 21 and the cowl top panel 22, and can be dispersed. Is improved.

Further, since the flange 36 is formed on the other side portion of the reinforcing panel 25, the strength of the reinforcing panel 25 is improved. Further, since the cowl top panel reinforcing plate 26 is joined to the front vertical wall portion 22b of the cowl top panel 22 that joins the flange 35 of the reinforcing panel 25,
The coupling strength of the flange 35 is improved, and the input from the strut tower 20 can be dispersed to the dash upper panel via the cowl top reinforcing plate 26.

When a large amount of deformation energy is input from the front of the vehicle body due to a collision or the like, the reinforcing panel 25 is triggered by the notch 37 to buckle from the vehicle width direction portions of the beads 31 and 32 and collapse. The energy applied in the front-back direction can be sufficiently absorbed.

The cowl top reinforcing plate 26 may be extended upward and a wiper pivot may be attached to this extended portion.

[0025]

According to the vehicle body structure of the first aspect of the present invention, when an upward force is applied to the strut tower by pushing up the wheels, one side portion and the rear portion of the reinforcing panel are hood ridges. Since it is joined to the inner vertical wall of the panel or the front vertical wall of the cowl top panel, the upward deformation force of the strut tower is received in the shearing direction, ensuring the hood ridge panel, cowl top panel and dash upper panel. Can be dispersed. In this case, the reinforcement panel is the hood ridge panel,
Since it is simply joined to the strut tower and the cowl top panel, the structure is simple and it is possible to prevent an increase in vehicle weight and a complicated vehicle body structure.

Further, according to the vehicle body structure of the second aspect of the invention, in addition to the effects of the vehicle body structure of the first aspect of the invention, when a large force is input from the front of the vehicle body, the reinforcing panel is provided with a bead. Buckling is promoted by so that energy can be absorbed.

[Brief description of drawings]

FIG. 1 is a partially enlarged perspective view of a vehicle body structure according to an embodiment of the present invention.

FIG. 2 is a plan view showing an outline of the vehicle body structure shown in FIG.

3 is a sectional view taken along line III-III in FIG.

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

5 is a perspective view of the reinforcing panel of FIG.

FIG. 6 is an attached drawing of Jitsukaihei 1-123779.

[Explanation of symbols]

 20 Strut Tower 21 Hood Ridge Panel 21a Inner Vertical Wall 22 Cowl Top Panel 22b Front Vertical Wall 25 Reinforcement Panel 27 Engine Room 31 Bead 32 Bead

Claims (2)

[Claims] 1. A strut tower, on which upper portions of struts for supporting a vehicle body are supported and mounted, projects from a hood ridge panel on a side portion of the vehicle body into an engine room, and a cowl top panel is provided at a portion of the hood ridge panel behind the strut tower. In a vehicle body structure in which parts are joined, in a space surrounded by the strut tower, the cowl top panel, and the hood ridge panel, a reinforcing panel extending substantially horizontally is arranged, and The front portion is joined to at least one of the upper surface or the rear vertical wall surface of the strut tower, and one side portion of the reinforcing panel is joined to the inner vertical wall portion of the hood ridge panel,
A vehicle body structure for an automobile, wherein a rear portion of the reinforcing panel is joined to a front vertical wall portion of the cowl top panel. 2. The vehicle body structure according to claim 1, wherein the reinforcing panel is provided with a bead extending along at least a front vertical wall portion of the cowl top panel.