JP2514658Y2 - Center pillar substructure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a center pillar lower structure of a vehicle.

[Conventional technology]

A vehicle body of an automobile or the like is provided with a rocker, a center pillar, or the like as a structural member that forms a side surface portion of a passenger compartment. As shown in FIG. 8, the locker 70 has a locker outer panel 72 located on the outer side in the vehicle width direction and a locker inner panel 74 located on the inner side in the vehicle width direction joined by flanges formed on the upper and lower portions, respectively. It is configured as an integral closed-section structural member. The locker 70 is located in the lower part of the side of the vehicle body and extends in the vehicle front-rear direction.

Further, the center pillar 76 has a center pillar outer 78 located on the outer side in the vehicle width direction and an inner panel 80 located on the inner side in the vehicle width direction connected by a flange (not shown) at a front portion and a rear portion of the vehicle body to form an integrally closed body. It is configured as a structural member having a cross section. The center pillar is located substantially at the center of the vehicle body in the front-rear direction and extends in the vehicle body vertical direction. A door hinge reinforce 82 is connected to the inner surface of the center pillar outer 78.

However, in the above center pillar lower structure, the locker 70 and the center pillar 76 are connected so as to be substantially orthogonal to each other, and as shown in FIG. 8, the lower end of the center pillar 76 is placed on the upper part of the rocker 70. The two are joined in a butt state. For this reason, there is a problem that stress concentrates on the abutting portion and the joint rigidity between the locker 70 and the center pillar 76 is low.

Here, in order to solve the above-mentioned problems, the present applicant proposes a connecting structure capable of improving the connecting rigidity between the locker and the center pillar in Japanese Utility Model Laid-Open Nos. 61-193872 and 62-105877. are doing.

The center pillar lower structure of these connecting structures is as shown in FIG. That is, the door hinge reinforce 86 arranged along the inner surface of the center pillar outer 84 has a structure in which the door hinge reinforce 86 is inserted through the locker 88 and the lower end portion thereof is connected to the lower flange of the locker 88.

However, in this center pillar lower structure, since the connecting portion of the center pillar 90 and the locker 88 is located in the root portion 90A of the center pillar 90, when a load is applied to the center pillar 90, the root portion 90A of the center pillar 90 is There is a problem that stress concentrates on the surface, which is disadvantageous in terms of rigidity.

[Problems to be solved by the device]

In view of the above facts, the present invention aims to provide a center pillar lower structure capable of preventing stress from concentrating only on the root of the center pillar and improving the joint rigidity between the center pillar and the locker. is there.

[Means for solving the problem]

According to the present invention, the center pillar is formed on the inner side in the vehicle width direction, and the lower end portion is extended and coupled to a flange formed on the lower end portion of the locker, and the vehicle width is increased from the vicinity of the lower end portion to a position above the rocker. A center pillar inner having a projecting portion projecting outward in the direction, and a lower end portion thereof is coupled to the lower end portion of the center pillar inner member, and is extended above the vehicle body along the projecting portion at a portion above the rocker. A closed cross section having an extending portion, an outer peripheral edge portion including an upper end edge portion of the extending portion being coupled to an outer peripheral edge portion including an upper end edge portion of the projecting portion, and extending in the vehicle body vertical direction between the extending portion and the projecting portion. It is characterized in that it is provided with a locca inner forming a.

[Action]

In the present invention having the above-described structure, the extending portion of the locca inner is extended to and joined to the upper edge of the protruding portion of the center pillar inner, and the lower end of the locca inner is joined to the lower end of the center pillar inner. . That is, the locker is connected to the lower end portion of the center pillar and the upper end edge portion of the extending portion that is separated upward from the lower end portion along the center pillar. Therefore, the stress acting on the connecting portion between the center pillar and the locker is divided into two by the vertical direction along the center pillar.
It is dispersed in the parts, and the joint rigidity between the center pillar and the locker can be improved. Also, between these joints,
Since the closed cross section extending in the vehicle body vertical direction is formed along the center pillar, the joint rigidity between the center pillar and the rocker can be further improved.

〔Example〕

A first embodiment of the center pillar lower structure according to the present invention will be described with reference to FIGS.

In the figure, arrow FR indicates the vehicle front direction, arrow IN indicates the vehicle inner direction, and arrow UP indicates the vehicle upward direction.

As shown in FIGS. 1 and 2, the center pillar 10 includes a side member outer 12 located outside in the vehicle width direction, and a center pillar inner 14 located below the side member outer 12 in the vehicle width direction. I have it. The lower part of this side member outer 12 is widened in the front-rear direction,
Along with this, the center pillar inner 14 also widens in the front-rear direction. Further, a rocker inner 16 which constitutes an inner side in the vehicle width direction of the locker 11 is arranged inside the center pillar inner 14 in the vehicle width direction, and this rocker inner 16 also spreads along the lower portion of the side member outer 12.

As shown in FIGS. 4 and 5, the cross-sectional shape of the side member outer 12 as viewed from above and below is such that the opening is directed inward in the vehicle width direction and the front side (the left side in FIGS. 4 and 5) is stepped. Part 12
It has a substantially hat shape with E formed. A front flange 12A and a rear flange 12B are formed at the front end portion and the rear end portion of the side member outer 12 along the vertical direction, respectively. A center pillar inner 14 is welded to the front flange 12A and the rear flange 12B from the inside in the vehicle width direction. That is, the upper portion of the center pillar inner 14 is a flat plate portion 14A, and the flat plate portion 14A is welded to the front flange 12A and the rear flange 12B of the side member outer 12 from the inside in the vehicle width direction, and has a closed cross section along the vertical direction. Forming fifteen.

Further, from the central portion of the center pillar inner 14 to the lower portion thereof, the central portion in the front-rear direction is projected to the outside in the vehicle width direction to form a protruding portion 14E. As shown in FIG. 5 and FIG. 6, the cross-sectional shape of the projecting portion 14E as viewed from above and below is such that the opening portion is directed inward in the vehicle width direction, and the front wall 14F and the rear wall 14G are inclined in the direction to widen the opening portion. It is said to have a hat shape.

A front flange 14B and a rear flange 14C are formed along the vertical direction at the front end portion and the rear end portion of the center pillar inner 14 with the projecting portion 14E interposed therebetween, and the front flange 14B and the rear flange 14C are formed. The parts other than the lower part are welded to the front flange 12A and the rear flange 12B of the side member outer 12 from the inside in the vehicle width direction to form a closed cross section 15.

On the other hand, the lower parts of the front flange 14B and the rear flange 14C of the center pillar inner 14 are mounted on a plate-shaped pot-carrying reinforcement 18 which is arranged along the front-rear direction inside the lower end of the center pillar inner 14 in the vehicle width direction. It is welded from the outside in the width direction.

The lower end of the side member outer 12 has a substantially U-shaped cross-section viewed from the vehicle front-rear direction with the opening facing inward in the vehicle width direction, and is a rocker outer portion 12C that constitutes the vehicle width direction outer side of the locker 11. At the lower end of the rocker outer portion 12C, a lower flange 12D is formed facing downward.

A lower end portion of the center pillar inner 14 is extended downward to form a lower flange 14D extending in the front-rear direction, and is welded to the lower flange 12D of the side member outer 12 from the inside in the vehicle width direction.

The flat plate portion 14A of the center pillar inner 14 is provided with an upper flange as an upper end edge portion formed on the upper end portion of the Lotka inner 16
16A is welded from the inside in the vehicle width direction. Locca inna 1
The cross-sectional shape of the lower end of 6 viewed from the vehicle front-rear direction is a substantially U-shape with the opening facing outward in the vehicle width direction, and is considered to be a locker inner portion 16B that constitutes the vehicle width direction inner side of the locker 11. A lower flange 16C is formed toward the lower side at the lower end of the locker inner portion 16B.

The lower flange 16C is welded to the lower flange 18A formed at the lower end portion of the locust-infused 18 from the inside in the vehicle width direction, and the lower flange 18A is attached to the lower flange 14D in the center pillar inner 14 in the vehicle width direction. It is welded from. In addition, an extended portion formed upwardly on the rotcaina 16
The center portion of the front-rear direction 21 is protruded inward in the vehicle width direction from the lower side of the upper flange 16A to the upper side of the Locker inner portion 16B, and is referred to as a protruding portion 16D. As shown in FIG. 5, the cross-sectional shape of the projecting portion 16D when viewed from above and below is such that the opening is directed outward in the vehicle width direction, and the front wall 16E and the rear wall 16F are inclined in the direction of expanding the opening. It is said to be a state.

A front flange 16G is provided along the vertical direction at the front end and the rear end of the Locker inner 16 with the projecting portion 16D interposed therebetween.
And a rear flange 16H are formed, and the front flange 16G and the rear flange 16H form an outer peripheral edge portion together with the upper flange 16A. The upper flange 16A, the front flange 16G, and the rear flange 16H are the flat plate portion 14A, the front flange 14B, and the rear flange 14 of the center pillar inner 14, respectively.
It is welded to the inner side surface of C in the vehicle width direction to form a closed cross section 17.

The lower ends of the front flange 16G and the rear flange 16H of the Rotka inner 16 are welded to the upper flange 18B formed at the upper end of the Rotkain force 18 from the inside in the vehicle width direction. Further, the center portion in the front-rear direction of the upper flange 18B of the potted lining 18 is protruded inward in the vehicle width direction in a rectangular shape to form a protruding portion 20. Side wall 20A of this protrusion 20
Is welded to the lower end of the projecting portion 16D of the Lotka inner 16 from the outside in the vehicle width direction. Further, the front wall 20B of the protruding portion 20 is welded to the lower end portion of the front wall 16E of the Lotka inner 16 and the protruding portion 2
The rear wall 20C of 0 is welded to the lower end of the rear wall 16F of the Locca Inner 16. Therefore, as shown in FIG. 3, a closed cross section 19 is formed by the locca inner 16 and loculus reinforced 18 along the front-rear direction.

 Next, the operation of this embodiment will be described.

In the present embodiment having the above-described configuration, the upper flange 16A of the locker inner 16 is extended to the upper side of the protruding portion 14E of the center pillar inner 14 and welded to the flat plate portion 14A. Further, the lower flange 16C of the Locca inner 16 is welded to the lower flange 14D of the center pillar inner 14 via the lower flange 18A of the Locust inner force 18. That is, Lotka Inna 16
The center pillar 10 and the center pillar 10 are joined at two locations vertically spaced apart ((A and B portions in FIGS. 1 and 3)).

Therefore, the stress acting on the joint between the center pillar 10 and the locker 11 can be distributed to the two portions A and B vertically separated along the center pillar 10, and the joint rigidity between the center pillar 10 and the locker 11 can be improved. Can be improved. Further, since a closed cross section 17 is formed along the center pillar 10 between these connecting portions A and B, the center pillar 10 and the locker 11 are formed.
The joint rigidity with can be further improved.

A second embodiment of the center pillar lower structure according to the present invention will be described with reference to FIG.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 7, the protruding portion 14E of the center pillar inner 14 is welded to the upper end portion 12F of the rocker outer portion 12C of the side member outer 12 from the inside in the vehicle width direction.

Therefore, the joint rigidity between the center pillar 10 and the locker 11 can be further improved.

[Effect of device]

Since the present invention is configured as described above, it has an excellent effect that stress can be prevented from concentrating on the root portion of the center pillar, and the joint rigidity between the center pillar and the locker can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a lower portion of a center pillar according to a first embodiment of the present invention as seen obliquely from the front inside of a vehicle, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is FIG. III sectional view,
FIG. 4 is a sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is VV in FIG.
6 is a sectional view taken along the line VI-VI in FIG. 3, FIG. 7 is a sectional view showing the lower structure of the center pillar according to the second embodiment of the present invention, as seen from the vehicle longitudinal direction, and FIG. 8 is FIG. 9 is a perspective view showing a conventional center pillar lower structure, and FIG. 9 is a perspective view showing another conventional center pillar lower structure. 10 …… Center pillar, 11 …… Locker, 12 …… Side member outer, 14 …… Center pillar inner, 14A …… Flat part, 14D …… Lower flange, 14E …… Projection part, 16 …… Rocker inner, 16A… … Top flange, 16C… Bottom flange, 17…
... closed cross section.

Claims (1)

(57) [Scope of utility model registration request] 1. A vehicle which is formed inside a center pillar in the vehicle width direction and whose lower end is extended and joined to a flange formed at the lower end of the rocker, and is provided at a portion from the vicinity of the lower end to a position above the rocker. A center pillar inner having a protrusion protruding outward in the width direction, a lower end of the center pillar inner connected to the lower end of the center pillar inner, and an upper portion of the rocker extending upward along the protrusion along the protrusion. An extended peripheral portion including an upper end edge portion of the extended portion, the outer peripheral edge portion including an upper end edge portion of the extended portion is coupled to the outer peripheral edge portion including the upper end edge portion of the protruding portion, and extends in the vehicle body vertical direction between the extended peripheral portion and the protruding portion. A center pillar lower structure comprising: a locker inner forming a cross section;