JP2002211436A - Body side part structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a body side part structure of automobile capable of increasing the rigidity of a body front-side face against an impact load from the front or side of a body. SOLUTION: In this body side part structure, a front pillar hinge reinforcement 12 is inserted into a front pillar part 6, and side sill reinforcements 14 and 15 are inserted into a side sill part 7. Double closed sections S1 and S2 structures are formed continuously from the front pillar part 6 to the side sill part 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side body structure of a motor vehicle capable of improving the rigidity of a side pillar portion from a front pillar portion in a four-wheeled vehicle.

[0002]

2. Description of the Related Art FIG. 12 shows a side structure of a conventional automobile. The impact load applied to the front side surface 100 of the vehicle body from the front is transmitted through the tire 101 as seen from the arrow. The vehicle body front side surface 100 includes a front pillar portion 102 and a side sill portion 103,
A door mounting opening 104 is formed. As shown in FIG. 13 and FIG. 14, a joint portion between the front pillar portion 102 and the side sill portion 103 is
Alternatively, the dash lower cross member 106 and the dash side panel 107 or the side sill inner panel 1
08 and front pillar hinge reinforcement 1
09 or a side sill strength 110 and a side body outer panel 111 where four types of panels are joined.

Therefore, in the front pillar portion 102, one side of the dash panel 105 and the dash side panel 10
7 front end 107a and side body outer panel 111
Of the dash side panel 10
7, the rear end 107b of the front pillar hinge reinforcement 109 and the rear end edge 111b of the pillar portion of the side body outer panel 111 are joined.
The front edge 109a of the front pillar hinge reinforcement 109 is joined in the middle of the dash side panel 107 to reduce the number of welds to three or less. However, if an excessive impact load is applied to this portion from the front of the vehicle body, a deformation of the side body outer panel 111 of the front pillar portion 102 may cause a torsional deformation due to bending buckling or a moment around the front side surface 100 of the vehicle body. was there.

Therefore, there is a prior art in which the lower end of the front pillar hinge reinforcement 109 is extended to the side sill portion 103 and is joined to the front end of the side sill strength 110 (Japanese Patent Laid-Open No. Hei 10-21803).
No. 5). According to this technique, as shown in FIG.
Outer side strength 110 a of side sill strength 110 is joined to the outer surface of front pillar hinge reinforcement 109.

However, the strength 1 on the inner side
10b is joined to the side sill inner panel 108, so that the front pillar hinge reinforcement 1
When the lower end of the opening 09 was opened and an impact load was applied from the front or side, the front pillar portion 102 was easily deformed, and it was not possible to sufficiently cope with the impact load from the front or side.

Therefore, as shown in FIGS. 16 to 19, a front pillar sub-reinforcement 112 forming a closed cross section together with a front pillar hinge reinforcement 109 is provided inside the front pillar portion 102 (see FIG. 7). In addition, the lower end of the front pillar hinge reinforcement 109 is extended to the side sill 103, and the outer side sill strength 110a is extended.
(See FIG. 18) and the tip thereof is joined to the inner side strength 110b (see FIG. 19).
issue).

[0007]

However, according to the above prior art, the lower end of the front pillar hinge reinforcement 109 extends to the side sill portion 103 and is joined to the front end of the side sill strength 110. As shown in FIG. 18, since the cross-sectional structure is not formed inside the side sill portion 103, the vehicle body strength may be reduced at this portion. Also,
Since the front pillar hinge reinforcement 109 is extended to a position where the front pillar hinge reinforcement 109 is joined to the front end of the side sill strength 110, the size may be increased, and the yield and the formability may be deteriorated. Further, when an impact load from the front of the vehicle body is transmitted to the front side surface of the vehicle body through the tire, there is a possibility that bending deformation and torsional deformation due to a moment may occur around the front side surface of the vehicle body.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a vehicle side body structure capable of improving the rigidity of a vehicle body front side surface against an impact load from the front or side of the vehicle body.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a side body structure of an automobile having a front pillar hinge reinforcement in a front pillar portion and a side sill reinforcement in a side sill portion. And a double closed cross-sectional structure is formed continuously from the front pillar portion to the side sill portion. Further, the present invention provides a front pillar portion constituted by a side body outer panel and a pillar portion inner panel, a front pillar hinge reinforcement, and a side sill portion constituted by a side body outer panel and a side sill portion inner panel. In a side body structure of an automobile equipped with a side sill outer reinforcement, a lower end of the front pillar hinge reinforcement is extended to the side sill portion side, and the front pillar hinge reinforcement and the side sill outer reinforcement are connected to each other. , Joined inside the side sill,
A front pillar sub-reinforcement forming a closed cross section together with the front pillar hinge reinforcement in the front pillar portion, and a side sill inner reinforcement forming a closed cross section together with the side sill outer reinforcement in the side sill portion. Interior, the front pillar sub-reinforcement is joined to the side sill inner reinforcement to form a second closed cross section that is continuous from the front pillar portion to the side sill portion, and is continuous from the front pillar portion to the side sill portion. It has a double closed cross-section structure. Further, the front pillar hinge reinforcement is extended to the side sill outer reinforcement with the lower end extension of the front pillar hinge reinforcement and the lower extension of the front pillar sub reinforcement extended to the side sill portion side opened to each other. And the front pillar sub-reinforcement is joined to the side sill inner reinforcement. Still further, the cross-sectional shape of the front pillar sub-reinforcement in the side sill portion is formed to be a substantially hat-shaped cross-sectional shape in which the inside is arranged toward the inside of the vehicle body. Further, at the front end of the side sill portion, a closed cross section is formed by the side sill inner reinforcement and the front pillar sub reinforcement, and a closed cross section is formed by the front pillar sub reinforcement and the side sill outer reinforcement. That is, two closed sections are formed.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 shows a part of the body of an automobile, FIG. 2 is a perspective view showing a front body structure, FIG. 3 is an exploded perspective view of FIG. 2, and FIG. 4 is a side view showing a front pillar portion and a side sill portion. FIG. FIG. 5 is a perspective view showing a front pillar hinge reinforcement, and FIG.
7 is a front view showing a front pillar hinge reinforcement, and FIGS. 7 to 11 are sectional views of FIG.

Referring to FIGS. 1 and 2, a vehicle body 1 is shown.
Is provided with a side body 3 on the rear side of the front wheel tire 2.
Is provided. A front pillar 6 is provided in front of the front door opening 5 of the side body 3, and a side sill 7 is provided below the front door opening 5.

The structure of the front pillar portion 6 and the side sill portion 7 will be described with reference to FIGS. The front pillar portion 6 and the side sill portion 7 have a closed cross section S1 formed by an inner panel portion 10 including a dash side panel 8 and a side sill inner panel 9, and a pillar portion 11A and a side sill portion 11B of the side body outer panel 11. Inside the front pillar portion 6 and the side sill portion 7, a front side having a substantially L-shaped left side (a substantially inverted L-shaped right side) as shown in FIGS. A pillar hinge reinforcement 12 and a front pillar sub reinforcement (hereinafter abbreviated as “sub reinforcement”) 13 having a substantially U-shaped cross section such as a brace as a reinforcing member are provided, and a side sill outer strength is provided on the side sill portion 7 side. (Also referred to as side sill outer reinforcement) 14 and side sill inner reinforcement (also referred to as side sill inner reinforcement) 15.

As shown in FIG. 7, the front pillar hinge reinforcement 12 is formed in a U-shape in cross section, and a front edge 12a is spotted on the inner surface of the front pillar 11A of the side body outer panel 11. Welded. The rear edge 12b of the front pillar hinge reinforcement 12 is the rear edge 11Ab of the front pillar 11A of the side body outer panel 11.
And the rear end edge portion 8b of the dash side panel 8 is fixed by spot welding w. The front pillar portion 11A of the side body outer panel 11 and the front edge portions 11Aa, 8a of the dash side panel 8, respectively,
The dash panel 16 is fixed to the flange portion 16a by spot welding w.

As shown in FIGS. 7 and 8, both side flange portions 13a and 13b and upper and lower flange portions 13c and 1c of the sub reinforcement 13 are provided on the rear surface of the front pillar hinge reinforcement 12 on the indoor side.
3d is joined by spot welding w. With the sub reinforcement 13 and the front pillar hinge reinforcement 12, a closed cross section S2 is formed inside the closed cross section S1 from the front pillar portion 6 to the side sill portion 7, thereby forming a double closed cross section.
The closed cross section S1 is formed on the outer side by the sub reinforcement 13 and the front pillar hinge reinforcement 12 forming the closed cross section S2.
a and a closed cross section S1b on the inner side.

On the other hand, the side sill portion 7 is shown in FIGS.
As shown in FIG. 1, the side sill portion 11B of the side body outer panel 11 and the side sill inner panel 9 form a closed cross section S1 of the front pillar portion 6 continuously. The front end of the side sill 7 is, as shown in FIG.
2A connects the upper and lower flange portions 12c and 12d to the side sill portion 1.
Spot welding w is performed between the upper and lower flange portions 11Ba and 11Bb of 1B and the upper and lower flange portions 9a and 9b of the side sill inner panel 9, respectively. As shown in FIG. 9, the front end of a side sill outer truss strength 14 disposed in the side sill portion 7 along the front-rear direction is superimposed on the open end of the extension portion 12A of the front pillar hinge reinforcement 12, and spot welding is performed. w. The extended portion 12A of the front pillar hinge reinforcement 12 is formed by shortening a portion 12B shown by oblique lines in FIG.

This side sill outer rust 14
Is formed in a substantially U-shaped cross section, and at the open end where the front pillar hinge reinforcement 12 is interrupted,
As shown in FIG. 10, a closed section S2 is formed together with the sub reinforcement 13. These side sill outer truss strength 14 and sub reinforcement 1
3 are upper and lower flange portions 14a, 13c and 1 respectively.
4b, 13d side sill inner strength 15
Are joined by spot welding w. The side sill inner strength 15 includes upper and lower flange portions 15Ba and 11Bb of the side sill portion 11B and upper and lower flange portions 9a and 9b of the side sill inner panel 9 from the position where the front pillar hinge reinforcement 12 is interrupted. Are spot-welded w, and are disposed along the front-rear direction of the side sill portion 7. Sub-learning 13 is
A closed section S2 is formed with the side sill outer strength 14, and a closed section S3 is formed with the side sill inner strength 15.

At the position where the sub reinforcement 13 is interrupted, as shown in FIG.
By performing spot welding w between the flange 4a and the flange 15a, and the flange 14b and the flange 15b, a closed cross section S2 is continuously formed by the side sill outer strength 14 and the side sill inner strength 15.

According to the above construction, when an impact load from the front of the vehicle body is applied to the front side surface of the vehicle body, the front pillar portion 6
And an impact load is applied to the side sill portion 7. Due to this load, the front pillar portion 1 of the side body outer panel 11 is
When 1A is going to be deformed to the rear side of the vehicle body, the deformation is caused by the closed cross section S2 formed by the sub reinforcement 13 and the front pillar hinge reinforcement 12 provided inside the closed cross section S1 of the front pillar portion 11A. Suppress. When the impact load from the front pillar portion 6 is transmitted to the side sill portion 7 side, the sub reinforcement 13 and the front pillar hinge reinforcement 12 are provided on the side sill portion 7 side.
The rear reinforcement 13 forms the closed sections S2 and S3 together with the side sill outer strength 14 and the side sill inner strength 15 on the rear side of the closed section S2 formed as described above, so that the impact is transmitted to the strong side sill portion 7. And absorb.

According to the above embodiment, since the closed cross-sections S1 and S2 formed in the front pillar portion 6 are continuously formed in the side sill portion 7, the rigidity is improved by the continuous double cross-section structure. be able to. Further, on the side of the side sill portion 7, on the rear side of the closed cross section S2 formed by the sub reinforcement 13 and the front pillar hinge reinforcement 12, the sub reinforcement 13 and the side sill outer strength 1 are provided.
4 and the side sill inner strength 15, two closed cross sections 2 and 3 are formed.
The rigidity can be increased from the middle of the front end. Therefore, the shock absorbing effect can be further improved.

The present invention is not limited to the above-described embodiment, but includes, for example, a sub reinforcement 1
The size, material, and thickness of the front pillar hinge 3 and the sub reinforcement 13 can be appropriately set.
The shape and size of the closed section S2 formed by the above can also be arbitrarily set. Further, the length of the sub-reinforcement 13 with the side sill outer strength 14 forming a closed section S2 in the vehicle longitudinal direction, and the length of the sub-reinforcement 13 with the side sill inner strength 15 forming the closed section S3. Can be set arbitrarily. etc,
In addition, it goes without saying that the present invention can be carried out by appropriately changing the scope of the present invention without changing the gist.

[0021]

As described above, according to the vehicle side body structure of the present invention, the following effects can be obtained. In the side body structure of a car with a front pillar hinge reinforcement in the front pillar and a side sill reinforcement in the side sill, a double closed cross-section is formed continuously from the front pillar to the side sill. Therefore, the rigidity of the front pillar portion and the side sill portion against an impact load from the front or side of the vehicle body can be improved. Front pillar hinge reinforcement is installed inside the front pillar part consisting of the side body outer panel and pillar inner panel, and the side sill outer reinforcement is made into the side sill part consisting of the side body outer panel and the side sill inner panel. In the side body structure of the automobile equipped with the element, the lower end of the front pillar hinge reinforcement is extended to the side sill part side, and the front pillar hinge reinforcement and the side sill outer reinforcement are arranged inside the side sill part. A front pillar sub-reinforcement for joining and forming a closed cross section together with the front pillar hinge reinforcement in the front pillar portion, and the side sill outer in the side sill portion. A second sill inner reinforcement for forming a closed cross section together with the reinforcement, the front pillar sub-reinforcement being joined to the side sill inner reinforcement, and a second closing being continuous from the front pillar portion to the side sill portion. Since a cross section is formed to form a double closed cross-section structure that is continuous from the front pillar portion to the side sill portion, the rigidity of the front pillar portion and the side sill portion with respect to an impact load from the front or side of the vehicle body can be improved. it can. Further, the front pillar hinge reinforcement is extended to the side sill outer reinforcement with the lower end extension of the front pillar hinge reinforcement and the lower extension of the front pillar sub reinforcement extended to the side sill portion side opened to each other. And the front pillar sub-reinforcement is joined to the side sill inner reinforcement, so that a double closed cross-sectional structure that is continuous from the front pillar portion to the side sill portion can be formed. Therefore, the rigidity from the front pillar portion to the side sill portion can be improved. Furthermore, the cross section of the front pillar sub-reinforcement inside the side sill has a substantially hat-shaped cross-section with the inside facing toward the inside of the vehicle, so the closed cross-section is large and rigidity is improved. Can be. Also,
At the front end of the side sill part, a closed section is formed by the side sill inner reinforcement and the front pillar sub-reinforcement, and a closed section is formed by the front pillar sub-reinforcement and the side sill outer reinforcement. Since the closed section is formed, the rigidity of the joint portion of the inner panel can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a vehicle body of an automobile.

FIG. 2 is a partially enlarged perspective view showing the embodiment of the side body structure of the automobile according to the present invention with a door removed.

FIG. 3 is an exploded perspective view of FIG. 2;

FIG. 4 is a side view showing a front pillar portion and a side sill portion.

FIG. 5 is a perspective view showing a front pillar hinge reinforcement.

FIG. 6 is a front view showing a front pillar hinge reinforcement.

FIG. 7 is a sectional view taken along line AA of FIG. 4;

FIG. 8 is a sectional view taken along line BB of FIG. 4;

FIG. 9 is a sectional view taken along line C′-C ′ of FIG. 4;

FIG. 10 is a sectional view taken along line D′-D ′ of FIG. 4;

FIG. 11 is a sectional view taken along line EE of FIG. 4;

FIG. 12 is a conceptual diagram showing a conventional vehicle body front structure.

FIG. 13 is a sectional view taken along line FF of FIG. 12;

FIG. 14 is a sectional view taken along line GG of FIG.

FIG. 15 is a cross-sectional view showing a conventional vehicle body front structure.

FIG. 16 is a side view showing a conventional front pillar portion and a side sill portion.

FIG. 17 is a perspective view showing a conventional front pillar hinge reinforcement.

18 is a sectional view taken along line CC of FIG.

19 is a sectional view taken along line DD of FIG. 16;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Body 2 Front wheel tire 3 Side body 4 Front door 5 Door opening 6 Front pillar part 7 Side sill part 8 Dash side panel 9 Side sill inner panel 10 Inner panel part 11 Side body outer panel 11A Pillar part 11B Side sill part 12 Front pillar hinge reinforcement Mentor 13 Front pillar sub reinforcement (sub reinforcement) 14 Side sill outer strength (side sill outer reinforcement) 15 Side sill inner strength (side sill inner reinforcement) 16 Dash panel S1, S2, S3 Closed cross section

Claims (5)

[Claims] 1. A side body structure of an automobile in which a front pillar hinge reinforcement is provided in a front pillar portion and a side sill reinforcement is provided in a side sill portion, wherein a continuous double structure is provided from the front pillar portion to the side sill portion. Side body structure of an automobile characterized by forming a closed cross section structure 2. A front pillar hinge comprising a side body outer panel and a side sill portion inner panel, and a front sill portion comprising a side body outer panel and a side sill portion inner panel. In a side body structure of an automobile equipped with an outer reinforcement, a lower end of the front pillar hinge reinforcement is extended to the side sill portion side, and the front pillar hinge reinforcement and the side sill outer reinforcement are provided. A front pillar sub-reinforcement that forms a closed cross section together with the front pillar hinge reinforcement is joined to the front pillar portion, and the side sill portion includes the side sill. A second sill that includes a side sill inner reinforcement that forms a closed cross section with the outer reinforcement and that joins the front pillar sub-reinforcement to the side sill inner reinforcement and that extends from the front pillar portion to the side sill portion. A side body structure of an automobile, wherein a cross section is formed to form a continuous double closed cross section structure from the front pillar portion to the side sill portion. 3. The front pillar hinge reinforcement is extended with the lower end extension of the front pillar hinge reinforcement and the lower extension of the front pillar sub reinforcement extended to the side sill portion side. The vehicle body structure according to claim 2, wherein the side sill outer reinforcement is joined to the side sill outer reinforcement, and the front pillar sub reinforcement is joined to the side sill inner reinforcement. 4. The cross section of the front pillar sub-reinforcement in the side sill portion is formed to have a substantially hat-shaped cross section in which the inside is directed toward the inside of the vehicle body. Car side body structure. 5. A closed cross section is formed at a front end of the side sill portion by the side sill inner reinforcement and the front pillar sub reinforcement, and a closed cross section is formed by the front pillar sub reinforcement and the side sill outer reinforcement. Form 2
5. A side body structure for a motor vehicle according to claim 2, wherein two closed cross sections are formed.