JP2000318643A - Center pillar reinforcing structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing structure of a center pillar capable of enhancing strength. SOLUTION: A reinforcement 15 for reinforcing a center pillar part 5 is arranged ranging over from a roof side part upto a door hinge attaching part, and the reinforcement 15 for reinforcing the center pillar part 5 is joined to an inner panel 6 side, in center pillar reinforcing structure for an automobile wherein a side body 4 is composed of an inner panel 6 and a side body outer panel 7, and wherein the reinforcement 15 for reinforcing the center pillar part 5 is interpolated onto the center pillar part 5 of the side body 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a center pillar reinforcing structure for a motor vehicle capable of improving strength.

[0002]

2. Description of the Related Art In a four-door vehicle, a door hinge for mounting a rear door is provided on a center pillar portion of a side body. In order to reinforce a mounting portion of the door hinge,
A reinforcement is disposed inside (Japanese Utility Model Laid-Open No. 62-83787, Japanese Utility Model Laid-Open No. 60-11273). On the other hand, there has been known a structure in which a brace is attached inside the center pillar portion to reinforce a shoulder anchor portion of a seat belt provided in the center pillar portion (Japanese Patent Application Laid-Open No. H10-218017).
Further, there is also known a prior art (Japanese Patent Laid-Open No. 58-136566) in which a reinforcing panel is inserted inside a center pillar portion in order to reinforce a mounting portion of a door hinge and a shoulder anchor portion of a seat belt. In such a structure that the door hinge mounting portion and the seat anchor portion of the seat belt are partially reinforced, the rigidity against an impact load from the side of the vehicle body is insufficient.

In view of the above, a prior art in which a door hinge mounting portion and a shoulder anchor portion of a seatbelt are reinforced by a large door hinge reinforcement and a shoulder anchor reinforcement (Japanese Patent Application No. Hei.
No. 78431). According to this prior art, a door hinge reinforcement and a shoulder anchor reinforcement are welded between a center pillar inner panel and a pillar portion of a side body outer panel. In this case, both side edges of the door hinge reinforcement and the shoulder anchor reinforcement are joined by spot welding between the center pillar inner panel and the pillar portion of the side body outer panel. There is a possibility that the strength at the time of spot welding becomes insufficient due to the sheet structure. For this reason, in the overlapping portion, one of the reinforcement for the door hinge and the reinforcement for the shoulder anchor is cut off and spot-welded as a three-piece structure.

On the other hand, there is also known a prior art in which a roof rail reinforcement is provided to reinforce a roof rail portion of a side body, and a pillar reinforcement is joined to the roof rail reinforcement (actually, the prior art). Japanese Patent Publication No. Hei 5-42709,
-263264).

[0005]

In the above-described conventional reinforcing structure, the roof rail reinforcement for reinforcing the roof rail portion and the pillar reinforcement for reinforcing the center pillar portion are formed separately, so that the joint portion is formed. And the joining work becomes complicated. In addition, when spot reinforcement is provided on both side edges of the pillar reinforcement to the center pillar inner panel and the pillar portion of the side body outer panel, if the door hinge reinforcement is provided,
There is a possibility that the strength of spot welding may be reduced due to the single-piece structure.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and to provide a center pillar reinforcing structure for a motor vehicle capable of improving strength.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a side body is constituted by an inner panel and a side body outer panel, and a reinforcement for reinforcing a center pillar portion is provided at a center pillar portion of the side body. In the center pillar reinforcement structure of an automobile equipped with the above, the reinforcement for reinforcing the center pillar portion is disposed from the roof side portion to the door hinge mounting portion, and the reinforcement for reinforcing the center pillar portion is provided on the inner panel side. It has been joined. Further, the present invention provides a roof side inner panel which forms a part of an inner panel, and a center pillar inner panel in which an upper end portion is joined to the roof side inner panel by forming a roof side portion by joining a side body outer panel. A center pillar portion of the side body is formed with a pillar portion of the side body outer panel, and the center pillar portion is provided with a reinforcement for reinforcing the center pillar portion. The reinforcement is disposed from the roof side portion to the door hinge attachment portion, the reinforcement for reinforcing the center pillar portion is joined to the inner panel side, and the upper end portion of the reinforcement for reinforcing the center pillar portion is attached to the reinforcement. Same as above center pillar inner panel Joined to the roof side inner panel, lies in the formation of the closed cross section between the reinforcement of the center pillar inner panel and the center pillar reinforcement. Further, the present invention resides in that the lower end of the reinforcement for reinforcing the center pillar is overlapped and disposed on the indoor side of the door hinge reinforcement for reinforcing the door hinge.

Since the reinforcement for reinforcing the center pillar is joined to the inner panel to reinforce the center pillar from the roof side, the rigidity of the upper portion of the center pillar can be improved. The rigidity of the center pillar portion against impact loads from the front and side surfaces can be improved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to FIGS.

1 to 6, reference numeral 1 denotes a vehicle body, and a side body 4 is provided on a side surface of the vehicle body 1. A front door 2 and a rear door 3 are provided in the side body 4, and door openings 4a and 4b in which the front door 2 and the rear door 3 are provided.
A center pillar portion 5 is provided in the middle of. The side body 4 includes an inner panel 6 provided on the indoor side and a side body outer panel 7 provided on the outdoor side. The inner panel 6 provided on the indoor side includes a front pillar inner panel 8, a hinge pillar front reinforcement 9, and a roof side inner panel 1.
0, a quarter inner panel 11, a center pillar inner panel 12, and the like, the lower ends of which are connected by side sills 13 (see FIG. 2).

A center pillar reinforcement 15 is provided between the center pillar inner panel 12 of the inner panel 6 and the pillar portion 14 of the side body outer panel 7 provided on the outdoor side. As shown in FIGS. 3 and 6, the center pillar reinforcement 15 has an upper end 15a formed in a T-shape and a lower end 1a.
5b is extended to a door upper hinge 16 mounting portion. As shown in FIGS. 7 (b) and 10 (a),
The vertical section a and the horizontal section of the vertical portion 15c including the lower end 15b are each formed in a rectangular shape, that is, a hat-shaped cross section.

As shown in FIG. 3, from the mounting portion Y of the door upper hinge 16 to the lower side of the center pillar portion 5, as shown in FIG. 10B, the center pillar inner panel 12 and the side body outer panel 7 are formed. A door hinge reinforcement 17 is arranged between the pillar portion 14 and the door hinge reinforcement 17 and reinforced. The door hinge reinforcement 17 includes a center pillar inner panel 12 of the inner panel 6 and a pillar portion 1 of the side body outer panel 7.
4, and both side flange portions 17a are joined by spot welding w or the like. On the other hand, the center pillar reinforcement 15 includes a center pillar portion 5, that is, a center pillar inner panel 12 of the inner panel 6,
It is formed narrower than the pillar portion 14 of the side body outer panel 7, and is joined to the inner panel 6 side of the door hinge reinforcement 17 by spot welding w or the like on the inner surface of the center pillar inner panel 12 of the inner panel 6. ing.

As shown in FIGS. 3 and 4, the inner panel 6 and the side body outer panel 7 have upper ends constituting a roof side portion X joined to both sides of a roof panel 18. FIGS. 7 to 9 show the roof side portion X.
The roof side inner panel 1 constituting the roof side inner panel portion 19 of the inner panel 6
0, a joint portion between the roof side outer panel portion 20 of the side body outer panel 7 and both side flange portions 18 a of the roof panel 18. The upper flange portion 10a of the roof side inner panel 10 and the upper flange portion 20a of the roof side outer panel portion 20 of the side body outer panel 7 are connected to the roof panel 18
Are joined to the flange portions 18a on both sides by spot welding w or the like. The lower side flange portion 10b of the roof side inner panel 10 and the side body outer panel 7
The lower side flange portion 20b of the roof side outer panel portion 20 is joined to each other by spot welding w or the like (FIG. 7A).

The lower side flange portion 10b of the roof side inner panel 10 and the lower side flange portion 20 of the roof side outer panel portion 20 of the side body outer panel 7
b is the lower portion 21b of the upper T-shaped portion 21 of the center pillar inner panel 12 and the lower portion of the center pillar reinforcement 15 in the portion where the center pillar inner panel 12 and the center pillar reinforcement 15 are located. 4 together with the T-shaped part 22 of the upper end part 15a.
It is spot-welded in a sheet structure (FIG. 7 (b)). Further, in a portion where there is one center pillar inner panel 12, a three-piece structure is spot-welded together with the lower flange portion 21b of the upper T-shaped portion 21 of the center pillar inner panel 12 (FIG. 7C). .

The upper flange portion 22a of the T-shaped portion 22 at the upper end portion 15a of the center pillar reinforcement 15 is formed together with the upper flange portion 21a of the upper T-shaped portion 21 of the center pillar inner panel 12.
Spot welding w on the inner surface of the roof side inner panel 10
And so on. The center pillar reinforcement 15 includes a vertical portion 15 c and a door upper hinge 16.
It extends to the vicinity of the mounting portion Y, and the flange portions 15 d on both sides of the vertical portion 15 c are attached to the center pillar inner panel 1.
2 are joined to each other by spot welding w or the like (see FIGS. 8, 9, and 10). The center pillar reinforcement 15 includes the center pillar inner panel 12.
And a closed cross-sectional shape S2 is formed between the side body outer panel 7 and the pillar portion 14 (see FIGS. 10A and 10B).

According to the above configuration, since the center pillar reinforcement 15 extends from the roof side portion X to the vicinity of the door upper hinge 16 mounting portion Y of the center pillar portion 5, the center pillar reinforcement 15 is provided from the roof side portion X. Since it is possible to reinforce the center pillar portion 5 with a continuous member, it is possible to improve the rigidity of the upper portion of the center pillar portion 5 against an impact load from the side surface or the front surface.
Also, the center pillar inner panel 1 of the inner panel 6
2 and a side body outer panel 7 provided on the outdoor side
Since the center pillar reinforcement 15 is provided between the pillar portion 14 and the inner panel 6 side, the center pillar reinforcement 15 is provided. Does not affect the number of welds, the strength of the welded portion can be increased.

Further, a closed cross-sectional shape S1 is formed between the center pillar reinforcement 15 and the center pillar inner panel 12, and a closed cross-sectional shape S2 is formed between the center pillar reinforcement 15 and the pillar portion 14 of the side body outer panel 7. Therefore, the rigidity of the center pillar 5 is improved, and the rigidity of the center pillar 5 against an impact load from a side surface or a front surface can be improved. Further, the lower end of the center pillar reinforcement 15 is attached to the door upper hinge 16 mounting portion Y of the center pillar portion 5.
Since it is extended to the vicinity, the overlapping portion with the upper portion of the door hinge reinforcement 17 can be lengthened, so that the rigidity of the center pillar portion 5 can be improved. Also,
Since the center pillar reinforcement 15 can be joined to the center pillar inner panel 12 in advance, the efficiency of the assembling work can be improved.

The present invention is not limited to the above embodiment. For example, the length of the T-shaped portion 22 of the center pillar reinforcement 15 can be set arbitrarily. It goes without saying that the present invention can be carried out with appropriate changes without departing from the spirit of the invention.

[0019]

As described above, according to the vehicle center pillar reinforcement structure of the present invention, the following effects can be obtained. The present invention relates to a center pillar reinforcing structure for an automobile in which a side body is constituted by an inner panel and a side body outer panel, and a reinforcement for reinforcing the center pillar is provided in the center pillar of the side body. The reinforcement for the center pillar is arranged from the roof side to the door hinge mounting part, and the reinforcement for reinforcing the center pillar is joined to the inner panel side, so that the rigidity from the roof side to the upper part of the center pillar is improved. Can be achieved. Further, the present invention provides a roof side inner panel which forms a part of an inner panel, and a center pillar inner panel in which an upper end portion is joined to the roof side inner panel by forming a roof side portion by joining a side body outer panel. A center pillar portion of the side body is formed with a pillar portion of the side body outer panel, and the center pillar portion is provided with a reinforcement for reinforcing the center pillar portion. The reinforcement is disposed from the roof side portion to the door hinge attachment portion, and the reinforcement for reinforcing the center pillar portion is joined to the inner panel side,
The upper end of the reinforcement for center pillar reinforcement is joined to the roof side inner panel together with the center pillar inner panel, and a closed cross section is formed between the center pillar inner panel and the reinforcement for center pillar reinforcement. Since it is formed, the rigidity of the upper portion of the center pillar portion can be improved. Further, according to the present invention, the lower end of the reinforcement for reinforcing the center pillar is superposed on the indoor side of the door hinge reinforcement for reinforcing the door hinge, so that the rigidity of the entire center pillar can be improved. Can be.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a vehicle body showing an embodiment of a center pillar reinforcing structure of an automobile according to the present invention.

FIG. 2 is an exploded perspective view showing an embodiment of a center pillar reinforcing structure for an automobile according to the present invention.

FIG. 3 is a conceptual view of a side pillar body showing an embodiment of a center pillar reinforcing structure of an automobile according to the present invention, as viewed from the indoor side.

FIG. 4 is a perspective view, partially cut away, of a center pillar portion showing an embodiment of a vehicle center pillar reinforcing structure according to the present invention.

FIG. 5 is a perspective view showing a state where a center pillar reinforcement is assembled to the center pillar inner panel.

FIG. 6 is an exploded perspective view of FIG.

FIG. 7 is a cross-sectional view of the roof side portion of FIG. 3,
(A) is a sectional view taken along line AA, (b) is a sectional view taken along line BB,
(C) is a sectional view taken along line CC.

FIG. 8 is a sectional view taken along line DD of FIG. 3;

FIG. 9 is a partially enlarged view of FIG. 8;

FIG. 10 is a sectional view of each of the center pillars shown in FIG. 3;
(A) is a sectional view taken along the line EE, and (b) is a sectional view taken along the line FF.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Body 2 Front door 3 Rear door 4 Side body 5 Center pillar part 6 Inner panel 7 Side body outer panel 10 Roof side inner panel 12 Center pillar inner panel 14 Pillar part 15 Center pillar reinforcement (reinforcement for reinforcing center pillar part) 16) Door upper hinge 17 Door hinge reinforcement 18 Roof panel 19 Roof side inner panel part 20 Roof side outer panel part 21, 22 T-shaped part X Roof side part Y Door hinge mounting part 15a Upper part 15b Lower part S1 Closed section S2 Closed cross section

Claims (3)

[Claims] 1. A center pillar reinforcing structure for an automobile, wherein a side body is constituted by an inner panel and a side body outer panel, and a reinforcement for reinforcing a center pillar is provided in a center pillar of the side body. A reinforcement structure for a center pillar of an automobile, wherein reinforcement for reinforcement is arranged from a roof side portion to a door hinge mounting portion, and reinforcement for reinforcing the center pillar portion is joined to the inner panel side. 2. A roof pillar inner panel which forms a part of the inner panel, a roof side portion formed by joining a side body outer panel, and a center pillar inner panel having an upper end joined to the roof side inner panel. A center pillar portion of the side body is formed with a pillar portion of the side body outer panel, and in the center pillar reinforcing structure of an automobile in which a reinforcement for reinforcing the center pillar portion is provided in the center pillar portion, the center pillar portion for reinforcing the center pillar portion is provided. The reinforcement is disposed from the roof side portion to the door hinge attachment portion, the reinforcement for reinforcing the center pillar is joined to the inner panel side, and the upper end of the reinforcement for reinforcing the center pillar is attached to the upper end. With center pillar inner panel A center pillar reinforcement structure for an automobile, wherein a closed cross section is formed between the center pillar inner panel and a reinforcement for reinforcing the center pillar portion by joining to the inner side panel. 3. The door hinge reinforcement for reinforcing a door hinge according to claim 1, wherein a lower end of the reinforcement for reinforcing the center pillar is superposed on the indoor side of a door hinge reinforcement for reinforcing the door hinge. Reinforcing structure of the center pillar of a car