JP3329198B2 - Front body structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a front body structure, and more particularly, to a front body structure in which a side member and a stabilizer bracket are fixed to a fender apron.

[0002]

2. Description of the Related Art FIGS. 10 to 12 show a conventional front vehicle body structure. In this conventional front body structure, a side member 2 is welded to a fender apron 1 and a stabilizer bracket 3 is welded to a lower portion of the side member. Further, a front hook 4 is welded to a lower portion of the fender apron 1.

[0005] In FIGS. 10 and 12, reference numeral 5 denotes a front cross member connected to a lower portion of the side member 2.

[0004]

In the conventional front body structure, the stabilizer bracket 3 is attached to the bottom bracket 2a of the side member 2, so that the stabilizer bracket 3 has a relatively deep shape. (This depth is indicated by L1 in FIG. 11). For this reason, the material for forming the stabilizer bracket 3 needs to be upgraded, which leads to a decrease in yield and
There was a problem that the strength was weakened.

Further, since the front hook 4 is welded only to the fender apron 1 as shown in detail in FIG. 11, a long spot welding margin (shown by a length L2 in FIG. 10) is required to increase the strength. .) Was needed. Further, in the conventional front body structure, when the front cross member 5 receives an impact, the impact is not transmitted to other parts, and only the front cross member is moved. This is indicated by an arrow.), And the impact absorbing effect at the front part of the vehicle body could not be satisfactorily performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can improve the yield and strength of a stabilizer bracket, can shorten the spot welding allowance of a front hook, and can reduce the impact at the front of a vehicle body. It is an object of the present invention to provide a front vehicle body structure capable of favorably performing an absorbing action.

[0007]

In order to achieve the above object, in a front body structure in which a side member and a stabilizer bracket are fixed to a fender apron,
The lower part of the side wall of the side member and the fender apron
An extension member having a substantially L-shaped cross section is disposed between the extension member and a lower portion of the extension member .
Use one end of the stabilizer bracket fastener part
And is fastened and fixed .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a front vehicle body structure according to the present invention will be described below in detail with reference to the accompanying drawings. 1 to 5 show one embodiment of a front vehicle body structure according to the present invention. In the front body structure of the present embodiment, the vehicle 10
Weld the side member 12 to the Fender apron 11
An extension member 13 having a substantially L-shaped cross section is disposed between a lower portion 12a of the side wall of the side member and a lower portion 11a of the fender apron 11.

Holes 14, 14 are formed in the upper generally vertical portion 13a of the extension member 13 (FIGS. 6 to 6).
7), these holes 14 and 14 are used as electrodeposition liquid passage holes, through which a welding gun 15 is passed to weld the lower end flange portion 12b of the side member 12 to the fender apron 11.

The substantially vertical portion 1 of the extension member 13
3a is welded to the lower side wall portion 12a of the side member 12, and the lower end flange portion 13 of the extension member is welded.
c with front hook 16 and fender apron 11
Welded to.

Further, one end portion 17 of the stabilizer bracket 17 is attached to the substantially horizontal portion 13 d of the extension member 13.
a is fastened and fixed using bolts 18. Further, the extension member 13 and the front cross member 19
The stabilizer bracket 17 is fastened and fixed using bolts 18 (see FIGS. 2 and 4). In FIG. 5, reference numeral 20 denotes the extension member 13.
Is a welding nut for fastening the bolt 18 provided in the above.

In this embodiment, the extension member 1
By welding the lower end flange portion 13c of the third and the front hook 16 to the fender apron 11, the spot welding margin of the lower end flange portion and the front hook 16 can be matched. This allows the front hook 16
And the front hook can be reduced in size and weight. In addition, the lower end flange portion 1
Since the 3c, the fender apron 11 and the front hook 16 are fixed together, the rigidity in the vicinity can be improved.

Holes 14 and 1 are formed in extension member 13.
By piercing 4, the weight of the vehicle body can be reduced. The substantially horizontal portion 1 of the extension member 13
By fixing the one end portion 17a of the stabilizer bracket 17 to 3d, the depth (indicated by L3 in FIG. 4) of the stabilizer bracket can be reduced. Therefore, the grade of the material forming the stabilizer bracket 17 can be reduced, so that the yield can be improved and the strength of the stabilizer bracket can be increased.

Further, in this embodiment, the side members 12
Since the corners of the front cross member 19 and the front cross member 19 are connected by the stabilizer bracket 17, the rigidity of the vehicle body can be improved. Moreover, the front cross member 19
Receives the impact F, the stabilizer bracket 17 deforms and absorbs the impact, and the remaining impact can be dispersed to the fender apron 11 and the side members 12 via the extension members 13. The shock absorbing action in the part can be performed well (see FIG. 9).

[0015]

As described above, according to the front body structure of the present invention, in the front body structure in which the side member and the stabilizer bracket are fixed to the fender apron, the lower portion of the side wall portion of the side member is provided. And the above
An extension member having a substantially L-shaped cross section is disposed between the lower end of the stabilizer apron and one end of the stabilizer bracket at a substantially horizontal portion of the extension member.
The part is fastened and fixed using fasteners .
Ri, Ki out reducing the depth of the Stabilizer brackets together to improve the rigidity of the attachment portion of the stabilizer bracket can <br/> Rukoto can and this to improve the yield of the stabilizer bracket.

Further, the extension member is substantially perpendicular to the extension member.
The upper end of the straight part was welded to the lower part of the side wall part of the side member, and the lower end flange part of the extension member was fixed to the lower part of the fender apron together with the front hook .
By this, the lower end franc of the extension member
Match the spot welding allowance of the joint and front hook
Thus, the size and weight of the front hook can be reduced. Further, the rigidity in the vicinity of the mounting portion of the front hook can be improved.

Further, the side member and the front
At the corner of the joint with the s member, the lower surface of the side member
And the lower surface of the front cross member.
Because the bracket is fastened , the car
The rigidity of the body can be improved. Further, when the front cross member receives an impact, the stabilizer bracket deforms and absorbs the impact, and the remaining impact can be distributed to the fender apron and the side member via the extension member. Therefore, the shock absorbing action at the front portion of the vehicle body can be favorably performed.

Further, by forming a hole in the extension member, it is possible to reduce the weight of the extension member, and to perform spot welding of the side member through a welding gun using the hole as an electrodeposition liquid passage hole. Can be performed, and the electrodeposition liquid can be easily passed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a front portion of a vehicle to which a front vehicle body structure according to the present invention is applied.

FIG. 2 is a partially exploded perspective view showing an enlarged part surrounded by a circle indicated by an arrow A in FIG.

FIG. 3 is a sectional view taken along line BB in FIG. 2;

FIG. 4 is a sectional view taken along line CC in FIG. 2;

FIG. 5 is a plan view showing an extension member of one embodiment of the front vehicle body structure according to the present invention.

FIG. 6 is a front view showing an extension member of one embodiment of a front vehicle body structure according to the present invention.

FIG. 7 is a perspective view showing an extension member of one embodiment of a front vehicle body structure according to the present invention.

FIG. 8 is a perspective view showing a structure of a corner portion between a side member and a front cross member in one embodiment of the front vehicle body structure according to the present invention.

FIG. 9 is a cross-sectional view showing a connection relationship among a side member, a front cross member, an extension member, and a stabilizer bracket in one embodiment of the front vehicle body structure according to the present invention.

FIG. 10 is a perspective view showing a conventional front vehicle body structure.

FIG. 11 is a sectional view taken along line DD in FIG. 10;

FIG. 12 is a cross-sectional view showing a joining relationship between a side member and a front cross member in a conventional front vehicle body structure.

[Explanation of symbols]

 Reference Signs List 10 vehicle 11 fender apron 12 side member 13 extension member 14 hole 15 welding gun 16 front hook 17 stabilizer bracket 18 bolt 19 front cross member

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B62D 25/20 B62D 21/00

Claims (3)

(57) [Claims] 1. A front body structure which is adapted to fix the side members and the stabilizer brackets to the fender apron, side wall lower and the fen of said side members
An extension member having a substantially L-shaped cross section is disposed between the lower portion of the apron and one end of the stabilizer bracket is attached to a substantially horizontal portion of the extension member.
A front vehicle body structure, wherein the vehicle body is fastened and fixed using a fastener . 2. A substantially vertical portion of the extension member.
The front body structure according to claim 1, wherein an upper end of the front member is welded to a lower portion of a side wall portion of the side member, and a lower flange portion of the extension member is fixed to a lower portion of the fender apron together with a front hook. 3. The front member and the front cross member.
The lower surface of the side member and the flow
The stabilizer is connected to the bottom of the
The front body structure according to claim 1, wherein the bracket is fastened .