JP6840427B2 - Reinforcement structure of vehicle pillars - Google Patents

Description

The present invention relates to a reinforcing structure for pillars of a vehicle such as an automobile.

FIG. 5 is a side view of a conventional so-called one-box type automobile, showing the configuration of the rear part of the vehicle body in the vehicle width direction. As shown in FIG. 5, in the vehicle body 100, the rear side surface is composed of the roof 2, the quarter panel 3, the C pillar 10, the D pillar 20, and the B pillar 30. In the vehicle body 100, a door opening 2x is formed between the B pillar 30 and the C pillar 10, and a window opening 2y is formed between the C pillar 10 and the D pillar 20.

The quarter panel 3 is a blind spot in the drawing, and the side panel inner (not shown) and the side panel outer exposed to the outside as the vehicle body surface are joined, and the side panel inner is used to protect the occupants of the rear seats in the vehicle interior. A shoulder seatbelt anchor 40 and a retractor 50 for holding the seatbelt are arranged, and in particular, the shoulder seatbelt anchor 40 is arranged in the inner of the D pillar 20. Since the shoulder seat belt anchor 40 and the retractor 50 are arranged inside the side panel outer, they are virtually shown by dotted lines in the drawing.

In such a vehicle body 100, when an external force is applied to the vehicle body 100 due to a collision or the like, the load applied to the shoulder seat belt anchor 40 via the seat belt is borne by the D pillar 20, and the D pillar 20 moves to the passenger compartment side. There is a risk of deformation.

In response to such a defect, for example, in Patent Document 1, a reinforcing structure having a closed cross section in the extending direction of the pillar is formed by a pillar inner constituting the D pillar and a reinforcement for reinforcement, and the rigidity of the D pillar is increased. Is improved to reduce damage when a load is applied.

Japanese Unexamined Patent Publication No. 11-49030

However, the pillar reinforcement structure by the conventional technique has the following problems. That is, in order to form the reinforcing structure, it is necessary to use the reinforcement as a dedicated member, and the structure of the vehicle body has been increased in size, complexity, and cost.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a reinforcing structure for pillars of a vehicle capable of reducing damage to pillars with a simple configuration.

In order to achieve the above object, the first aspect of the present invention is a pillar reinforcing structure in which a pillar outer and a pillar inner are joined, which is arranged corresponding to a quarter panel of a vehicle, and the pillar outer is the pillar outer. It has a fold inducing portion formed substantially parallel to the extending direction of the joint surface of the pillar outer and the pillar inner, the pillar inner is bent in a convex direction toward the pillar outer, and the fold inducing portion is formed on the surface of the pillar outer. On the other hand, it is a reinforcing structure for pillars of a vehicle, which is a bead forming a concave or convex.

Further, as another aspect of the present invention, the fold-inducing portion may be formed as the contour of a bead bulging toward the pillar inner.

The present invention as described above has the effect that damage to the pillars can be reduced with a simple configuration.

Side view which shows the structure of the reinforcement structure of the pillar of the vehicle which concerns on embodiment of this invention. Cross-sectional view taken along the line AA of FIG. The figure for demonstrating the action and effect of the reinforcement structure of the pillar of the vehicle which concerns on embodiment of this invention. Side view which shows the structure of the reinforcement structure of the pillar of the vehicle which concerns on other Embodiment of this invention. Side view showing the configuration of the rear part of the body of a conventional automobile

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of a vehicle body 1 in which a reinforcing structure for pillars of a vehicle according to an embodiment of the present invention is incorporated, as viewed in the vehicle width direction. However, the same or equivalent configurations as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

Further, as shown in FIG. 1, in the D pillar 20 located above the quarter panel 3 in the vehicle height direction, a bead 21 is formed on the surface of the pillar outer 20a located outside in the vehicle width direction.

The bead 21 is located in the vicinity of the spot welding mark 11a on the flange 11 which is the peripheral edge of the window opening 2y, and has a vertical portion 21a which is substantially parallel to the spot welding mark 11 and extends along the vehicle height direction. It has a planar E-shaped outer shape including a plurality of horizontal portions 21b extending rearward in the vehicle length direction substantially orthogonally to the upper and lower ends of the vertical portion 21a and the intermediate portion, respectively. In FIG. 1, the mounting position of the shoulder seat belt anchor 40 projected on the bead 21 is indicated by point P in the figure.

Next, as shown by the cross-sectional view taken along the line AA of FIG. 2, the D pillar 20 includes a pillar outer 20a located outside in the vehicle width direction, a pillar inner 20b located inside in the vehicle width direction, and a pillar outer 20a and a pillar inner. Each of the 20b is provided with an extension panel 60 joined at the rear in the vehicle length direction to form a closed cross section in the vehicle height direction.

The joint surface between the pillar outer 20a and the pillar inner 20b forms a flange 11 which is the peripheral edge of the window opening 2y, and the spot welding marks 11a shown in FIG. 1 are arranged in the flange 11 in the extending direction of the pillars. It becomes.

The bead 21 formed on the pillar outer 20a has a shape that bulges convexly toward the pillar inner 20b, that is, is concave from the outer surface of the vehicle body, and the boundary between the surface of the pillar outer 20a and the bead 21 is A bent step F is formed. As shown in FIG. 1, the step F indicated by the arrow in FIG. 2 is located in front of the vertical portion 21a of the bead 21 in the vehicle length direction and corresponds to the ridge line located in the vicinity of the flange 11 of the D pillar 20. There is.

In the pillar inner 20b, bolts 41 for fixing the shoulder seat belt anchor 40 are fastened and fixed.

With reference to FIG. 1 again, the pillar outer 20a is formed with a step that recedes inward in the vehicle width direction with respect to the surface of the quarter panel 3. A decorative member such as garnish or glass (not shown) can be fitted on the surface of the pillar outer 20a, thereby preventing the appearance of the pillar outer 20a including the bead 21 from being directly viewed from the outside.

In the above configuration, the D pillar 20 corresponds to the pillar of the present invention, the pillar outer 20a corresponds to the pillar outer of the present invention, and the pillar inner 20b corresponds to the pillar inner of the present invention. Further, the step F of the bead 21 corresponds to the breakage inducing portion of the present invention.

The reinforcing structure of the pillar of the vehicle according to the embodiment of the present invention having such a configuration is characterized in that a bead 21 forming a step F is formed on the surface of the pillar outer 20a.

That is, when an external force is applied to the vehicle body 1 due to a collision or the like, as shown in FIG. 3, the load applied to the shoulder seat belt anchor 40 via the seat belt is applied from the bolt 41 to the D pillar 20 as shown by the white arrow in the figure. It acts to deform the pillar inner 20b so as to be pulled toward the passenger compartment side. At this time, the pillar inner 20b bends inward in the vehicle height direction with the step F of the bead 21 as a folding line, and rotates the flange 11 outward in the vehicle width direction as shown by an arrow in the figure.

As a result, the load applied to the D pillar 20 contributes to the deformation of the entire pillar while maintaining the joint of the flange 11, and as a result, the peeling of the pillar outer 20a and the pillar inner 20b on the flange 11 is suppressed, and the D pillar 20 is suppressed. It is possible to reduce the damage of the. Further, in the present embodiment, it is not necessary to use a reinforcement or other separate member as a dedicated product for reinforcement in the D pillar 20. Further, each part of a member such as a panel inner constituting the quarter panel 3 adjacent to the D pillar 20 can be gauged down.

Therefore, it is possible to reduce the damage to the pillars with a simpler structure and thus at a lower cost.

However, the present invention is not limited to the above embodiments. In the above description, the bead 21 has a vertical portion 21a extending upward in the vehicle height direction and a plurality of horizontal portions extending rearward in the vehicle length direction substantially orthogonally to the upper and lower ends and the intermediate portion of the vertical portion 21a. Although it is assumed that it has a horizontal shape E-shaped outer shape provided with 21b, the breakage inducing portion of the present invention is formed by rotating the flange on the pillar outer when a load is applied to the pillar. It may be formed in the vicinity of the flange and substantially parallel to the extending direction of the joint surface of the pillar outer and the pillar inner so as to induce a break that deforms the pillar while maintaining the bond.

Therefore, as another example, as in the vehicle body 4 shown in FIG. 4, it may be realized as a single strip-shaped bead 22 extending up and down in the vehicle height direction. Further, the number of beads may be arbitrary. Further, the breakage inducing portion of the present invention is realized as a part of a bead having a closed contour in a plan view, and also has a step, a ridge or a recess, or the like extending on the pillar outer and reaching the upper limit end in the vehicle height direction. It may be realized as an arbitrary shape change in the visual sense.

Further, in the above description, the bead 21 bulges toward the pillar inner 20b and therefore forms a concave portion on the vehicle body surface, but the bead including the breakage inducing portion of the present invention is the pillar outer 20a. It may bulge from the surface toward the outside in the vehicle width direction. However, the configuration as shown in FIG. 2 is more preferable because it is possible to easily fit a decorative member such as garnish or glass on the surface of the pillar outer 20a.

Further, by configuring the breakage inducing portion as a part of the bead 21 as in the present embodiment, the rigidity of the pillar outer 20a can be improved by the undulation of the bead 21, and thus the strength of the D pillar 20 is improved. It becomes possible to make it more suitable.

As described above, the present invention is a pillar reinforcing structure in which the pillar outer and the pillar inner are joined, which is arranged corresponding to the quarter panel of the vehicle, and the pillar outer is the extending direction of the joint surface between the pillar outer and the pillar inner. The pillar inner has a fold-inducing portion formed substantially parallel to the pillar outer, and the fold-inducing portion forms a concave or convex with respect to the surface of the pillar outer. It may be a bead, and is not limited by other specific purposes, uses, or configurations.

Therefore, the present invention may be carried out as if various modifications were made to the above-described embodiment, including those described above, as long as the present invention does not deviate from the gist thereof.

The present invention as described above has an effect that damage to pillars can be reduced with a simple configuration, and is useful in application to vehicles such as passenger cars.

1, 4 Body 2y Window opening 3 Quarter panel 11 Flange 11a Spot welding mark 20 D Pillar 20a Pillar outer 20b Pillar inner 21, 22 Bead 21a Vertical part 21b Horizontal part 40 Shoulder seat belt Anchor 41 Bolt 60 Extension panel

Claims (1)

It is a reinforcement structure of the pillar to which the pillar outer and the pillar inner are joined, which is arranged corresponding to the quarter panel of the vehicle.
The pillar outer has a breakage inducing portion formed substantially parallel to the extending direction of the joint surface between the pillar outer and the pillar inner.
The pillar inner is bent in a convex direction toward the pillar outer, and the pillar inner is bent in a convex direction.
The fold-inducing portion is a bead forming a concave or convex with respect to the surface of the pillar outer.
Reinforcing structure for vehicle pillars.

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