JPH0730460Y2 - Front body structure of automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement in a front body structure of an automobile.

[Conventional technology]

A front vehicle body of a vehicle is provided with a pair of left and right front side frames extending in the front-rear direction of the vehicle body, and a front cross member connecting front end portions of both front side frames. Conventionally, in order to reinforce the connecting portion between the front side frame and the front cross member and improve the rigidity of the connecting portion against the vibration load input from the wheel to the front side frame through the suspension, for example, the actual opening 55- As shown in Japanese Patent No. 27154,
The front side frame is joined to a front cross member while being surrounded by a square hole formed in a radiator support panel and a flange portion of a hood ridge panel.

[Problems to be solved by the device]

In the front vehicle body having the above-described configuration, it is difficult to accurately match the dimensions of the surrounding portions such as the square holes formed in the radiator support panel and the front side frame. However, there is a problem that the connecting portion cannot be effectively reinforced.
That is, when the dimension of the surrounding portion is larger than the outer diameter of the front side frame, a gap is formed between the surrounding portion and the front side frame, the reinforcing effect becomes insufficient, and conversely, the surrounding portion If the size is smaller than the outer diameter of the front side frame, the front end of the front side frame cannot be inserted into the surrounding portion,
There was a problem that assembly work became difficult.

The present invention has been made in order to solve the above problems, and can effectively reinforce the connecting portion between the front side frame and the front cross member without deteriorating the assembling property, and the suspension from the wheel. It is an object of the present invention to improve the rigidity of the connecting portion against the load input to the front side frame via the.

[Means for Solving the Problems]

The present invention relates to a pair of left and right front side frames extending in the front-rear direction of a vehicle body, a front cross member installed between the front end portions of both front side frames, and a side upper surface joined to the front bottom surface thereof, and this front cross member. A gusset plate that connects the upper surface of the member and the inner wall surface of the front side frame, and a shroud side panel disposed on the left and right of the front part of the vehicle body are provided. While providing a horizontal wall portion connecting between, and provided with a bent portion extending to the front side of the vehicle body at the inner end of the shroud side panel, and join the bent portion to the lateral wall portion of the gusset plate,
The lower part of the inner end of the shroud blade is joined to the vertical wall of the gusset plate.

[Action]

According to the present invention having the above structure, the connecting portion between the front side frame and the front cross member is reinforced by the gusset plate, and the lateral wall portion and the vertical wall portion of the gusset plate are provided with the inner end portion of the shroud side panel. Since the lower portion and the bent portion are joined and reinforced, the rigidity of the connecting portion against the load input from the wheel to the front side frame through the suspension is improved, and the connecting portion is twisted and deformed, etc. Is prevented.

〔Example〕

FIG. 1 shows an overall schematic view of an automobile having a front body structure according to an embodiment of the present invention. The front vehicle body structure is provided with a pair of left and right front side frames 1 extending in the front-rear direction of the vehicle body, a front cross member 2 installed between front end portions of both front side frames 1, and front and left portions of the vehicle body. The shroud side panel 3 is provided.

As shown in FIGS. 2 and 3, the front side frame 1 is composed of a flat plate-shaped outer panel 4 and an inner panel 6 having a U-shaped cross section having a flange portion 5 joined to the outer panel 4. The outer panel 4 and the inner panel 6 form a closed cross section that extends in the front-rear direction of the vehicle body.

The front cross member 2 is made of a member having a U-shaped cross section with an open top surface. The side surface is joined to the front bottom surface of the inner panel 6 of the front side frame 1, and the side end portion is joined to the inner panel 6. It is configured to be connected to the front side frame 1 by being joined to the lower flange portion 5. Further, the connecting portion between the front side frame 1 and the front cross member 2 is reinforced by connecting the upper surface of the front cross member 2 and the side wall surface of the inner panel 6 of the front side member 1 to each other. A gusset plate 7 is installed.

The gusset plate 7 has a pair of front and rear vertical wall portions 7a and a horizontal wall portion 7b that connects the upper end portions thereof to each other. The outer end of the portion 7c is joined to the inner wall surface of the inner panel 6 of the front side frame 1, and the inner end of the flange portion 7c is joined to the flange portion of the front side member 3.

The shroud side panel 3 has a hole 8 for installing a headlamp and a notch 9 into which the front side frame 1 is inserted. Further, a bent portion 10 extending toward the front side of the vehicle body is formed on the inner end portion 3a of the shroud side panel 3, and a lower portion 10a of the bent portion 10 is, as shown in FIG. Is joined to the upper surface of the lateral wall portion 7b. Further, the inner end portion 3a of the shroud panel 3 has a recessed portion 3b which is recessed in the front side of the vehicle body below the shroud panel 3, and the lower end portion of the recessed portion 3b has a gusset plate 7 as shown in FIG. Vertical wall
It is configured to be joined to the rear surface of the 7a and the flange portion 7c.

In this way, the bent portion 10 extending to the front side of the vehicle body is formed on the inner end portion 3a of the shroud side panel 3, and the bent portion 10 is formed on the front side frame 1 and the front cross member 2.
It is joined to the upper surface of the lateral wall portion 7b of the gusset plate 7 that reinforces the connection portion of the gusset plate 7, and the lower portion of the inner end portion 3a of the shroud side panel 3, that is, the concave portion 3b is attached to the rear surface of the vertical wall portion 7a of the gaset plate 7. Since the shroud panel 3 strengthens the reinforcing effect of the gusset plate 7, the rigidity of the connecting portion against the vibration load input to the front side frame 1 can be effectively improved. it can.

That is, above the gusset plate 7, a reinforcing portion having an L-shaped cross section including the inner end portion 3a of the shroud side panel 3 and the bent portion 10 is installed, and the reinforcing portion causes the front side frame 1 and the front cross. Since the connecting portion with the member 2 is reinforced, it is possible to improve the rigidity of the connecting portion against a vibration load or the like input from the wheel to the front side frame 1 via the suspension.
Therefore, it is possible to effectively prevent the connecting portion from being twisted and deformed in accordance with the vibration load or the like, and improve the running stability.

Further, the reinforcing portion including the shroud side panel 3 includes the front side member 1 and the front cross member 2.
Since it is only joined to the upper surface of the lateral wall portion 7b of the gusset plate 7 and the rear surface of the vertical wall portion 7a that form the connection portion with the gusset plate 7, even if there is some manufacturing error in the shroud side panel 3 or the like, The reinforcing portion can be easily and surely joined to the connecting portion, and the assembling property can be prevented from being deteriorated.

Further, in the above embodiment, as shown in FIG. 5, a predetermined gap 11 is formed between the bent portion 10 of the shroud side panel 3 and the gusset plate 7 above the joint portion of both members. Since it is configured as described above, by installing the radiator grill 12 and the like at the front portions of both members, it is possible to form a closed cross section composed of the radiator grill 12, the shroud side panel 3, and the gusset plate 7. There is an advantage that the reinforcing action of the connecting portion can be further improved.

[Effect of device]

As described above, according to the present invention, a bent portion extending to the front side of the vehicle body is formed at the inner end portion of the shroud side panel, and this bent portion is provided at the connecting portion between the front side member and the front cross member. Since the inner end of the shroud side member is joined to the horizontal wall of the gusset plate and the inner end of the shroud side member is joined to the vertical wall of the gusset plate, the connecting portion is folded with the inner end of the shroud side panel with a simple structure. Reinforce with a reinforcing part consisting of a curved part,
It is possible to effectively prevent the connecting portion from being twisted and deformed according to a vibration load or the like input from the wheel to the front frame.

Further, unlike the case where the front end portion of the front side member is configured to be inserted and joined to the surrounding portion formed of the square hole portion of the radiator support panel, there is no problem such as deterioration in assembling property. There is an advantage that the reinforcing portion can be joined in a state where the reinforcing portion is brought into close contact with the connecting portion easily and surely.

[Brief description of drawings]

FIG. 1 is a perspective view of an automobile having a front body structure according to an embodiment of the present invention, FIG. 2 is a perspective view showing an essential part of the front body structure, and FIG. 3 is a front body structure. Exploded perspective view, 4th
The drawing is a sectional view taken along the line IV-IV in FIG. 2, and FIG. 5 is the VV in FIG.
It is a line sectional view. 1 ... Front side frame, 2 ... Front cross member, 3 ... Shroud side panel, 3a ... Inner end part, 7 ... Gusset plate (connecting part), 7a ... Vertical wall part, 7b ... Horizontal wall part , 10 …… Bending part.

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right front side frames extending in the front-rear direction of a vehicle body, a front cross member installed between the front end portions of both front side frames and having side upper surfaces joined to the front bottom surfaces thereof, and the front. A gusset plate that connects the upper surface of the cross member and the inner wall surface of the front side frame, and a shroud side panel disposed on the left and right of the front part of the vehicle body are provided. While providing a lateral wall portion connecting between the parts, a bent portion extending to the front side of the vehicle body is provided at the inner end of the shroud side panel, and the bent portion is joined to the lateral wall portion of the gusset plate,
A front vehicle body structure for an automobile, wherein a lower portion of an inner end portion of a shroud panel is joined to a vertical wall portion of the gusset plate.