JP2019188865A - Vehicular center pillar - Google Patents

Abstract

To accomplish weight saving of a member that suppresses a deformation of the cross-sectional shape of a center pillar of a vehicle when a collision to a side face occurs.SOLUTION: A vehicular center pillar 16 includes: an inner reinforcement 24 that has a hat-shaped cross section; and an outer reinforcement 26 that has a hat-shaped cross section, the inner and outer reinforcements being joined to each other at respective side edges. A tabular cross-bridge plate 30 is placed on a part of the center pillar 16 in the vertical direction so as to join respective flanges 24b and 26b of the inner reinforcement 24 and the outer reinforcement 26 with respective flanges 24c and 26c thereof.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a center pillar of a vehicle, and more particularly to its structure.

  The center pillar is a pillar that extends in the vertical direction between the front door and the rear door on the side of the vehicle body and connects the floor of the vehicle body and the roof. The center pillar is required to have a high strength so as not to enter the room due to deformation caused by the collision load at the time of a side collision and to efficiently transmit the collision load to the floor and the roof.

  The following patent document 1 shows a center pillar ((18)) having a pillar outer reinforcement (40) and a pillar inner reinforcement (42) each having a hat-shaped cross-sectional shape. Pillar outer reinforcement (40) ) And the pillar inner reinforcement (42) are arranged so that the hat-shaped openings are opposed to each other to form a closed cross-sectional structure, and between the pillar outer reinforcement (40) and the pillar inner reinforcement (42), A partition panel (34) extending along the vertical direction of the vehicle is disposed, and the pillar outer reinforcement (40) and the pillar inner reinforcement (42) are joined at both side edges via the partition panel (34). The partition panel (34) is a sensor formed in a closed cross-sectional structure. The inner space of the pillar (18) is partitioned, and the reference numerals in the parentheses () are those used in the following Patent Document 1 and are related to the reference numerals used in the description of the embodiment of the present application. do not do.

Japanese Patent Laying-Open No. 2015-123811

  The partition panel of Patent Document 1 is provided to extend in the vertical direction of the vehicle and is large and heavy. The present invention provides a structure capable of reducing the weight of the center pillar.

  The center pillar of the vehicle according to the present invention is an inner panel member that is positioned on the inner side in the vehicle width direction and extends in the vehicle vertical direction, and an outer panel member that is positioned on the outer side in the vehicle width direction and extends in the vehicle vertical direction. An outer panel member joined to the corresponding side edge of the inner panel member at the edge to form a closed cross-sectional structure with the inner panel member, and both side edges of the inner panel member and the outer panel member in a part of the vehicle vertical direction And a flat cross-linked plate that connects each other.

  Since the member that connects the opposing surfaces in the center pillar of the closed cross-sectional structure is provided in a part of the center pillar in the vertical direction of the vehicle, the weight can be reduced.

It is a schematic diagram which shows a side part vehicle body structure. It is a side view which shows a center pillar. It is sectional drawing of the center pillar by the AA line shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, terms indicating directions and directions such as front and rear, left and right, and up and down represent directions and directions related to the vehicle. Further, in the left-right direction (width direction) of the vehicle, the side close to the center line extending in the front-rear direction of the vehicle is referred to as the vehicle width direction inner side, and the far side is referred to as the vehicle width direction outer side. In each figure, the direction of the arrow FR is forward, the direction of the arrow UP is upward, and the direction of the arrow OUT is outside in the vehicle width direction.

  FIG. 1 is a diagram schematically showing the configuration of the side body structure 10. The side body structure 10 includes a rocker 12 extending in the front-rear direction on the side of the floor member, a front pillar 14 and a center pillar 16 erected on the rocker 12, a rear wheel house 18 provided rearward from the rocker 12, A rear pillar 20 erected on the rear wheel house 18 and a roof side rail 22 extending in the front-rear direction so as to connect the upper ends of the pillars 14, 16, 20 are included. The center pillar 16 is located between the front door corresponding to the front seat of the vehicle and the rear door corresponding to the rear seat.

  2 is an enlarged view of the center pillar 16, and FIG. 3 is a cross-sectional view taken along line AA shown in FIG. The center pillar 16 includes an inner reinforcement 24 positioned on the inner side in the vehicle width direction, an outer reinforcement 26 positioned on the outer side in the vehicle width direction, and a surface panel 28 positioned on the outer side of the outer reinforcement 26. . The inner reinforcement 24 is a long member extending along the vertical direction of the vehicle, and a cross section that intersects the longitudinal direction, that is, a transverse cross section, is formed in a substantially hat shape. The hat shape is formed by a substantially U-shaped main body portion 24a and flange portions 24b and 24c which are both side edges of the main body portion 24a. The outer reinforcement 26 is also a long member extending along the vehicle vertical direction, and has a hat-shaped cross section. The hat shape is formed by a U-shaped main body portion 26a and flange portions 26b and 26c which are both side edges of the main body portion 26a. The inner reinforcement 24 can be made of a steel plate, and is formed into a predetermined shape by, for example, press molding. Therefore, the inner reinforcement 24 is an inner panel member located on the inner side in the vehicle width direction. The outer reinforcement 26 can be made of a steel plate, and is formed into a predetermined shape by, for example, press molding. Therefore, the inner reinforcement 24 is an outer panel member located on the inner side in the vehicle width direction.

  The inner reinforcement 24 and the outer reinforcement 26 are arranged so that the hat-shaped openings are opposed to each other, and the opposing flange portions are joined together by a technique such as welding. The inner reinforcement main body 24a and the outer reinforcement main body 26a facing each other define an internal space to form a center pillar 16 having a closed cross-sectional structure.

  The flange portion 24b and the flange portion 24c of the inner reinforcement 24 and the flange portion 26b and the flange portion 26c of the outer reinforcement 26 are bridged at a part in the vertical direction of the center pillar 16, in this embodiment, at one location. A bridging plate 30 is arranged so as to connect. The bridging plate 30 is a rectangular flat plate, and is arranged so that the longitudinal direction of the rectangle is a direction crossing the center pillar 16, and connects the flange portions 24 b and 26 b and the flange portions 24 c and 26 c straightly.

  During a side collision, a collision load F is applied to the center pillar 16 from the outside in the vehicle width direction. When the collision load F is applied, the inner reinforcement 24 and the outer reinforcement 26 try to deform so that the opening is widened, that is, the flange portions 24b and 26b and the flange portions 24c and 26c on both sides are separated from each other. To do. Along with this deformation, a tension acts on the bridging plate 30. Since the bridging plate 30 connects the flange portions on both sides straightly, even if tension is applied, the deformation is negligible compared to the case where the bridge plate 30 is bent or curved. For this reason, deformation of the inner reinforcement 24 and the outer reinforcement 26 where the flanges on both sides are about to be separated is suppressed, and deformation of the cross-sectional shape of the center pillar 16 is suppressed. Therefore, the intrusion speed of the collision object into the vehicle can be reduced.

  By providing the bridge plate 30 in a part of the center pillar 16 in the vertical direction, the weight of the center pillar 16 can be reduced as compared with the case where the bridge plate 30 is provided over the entire vertical direction.

  10 Side body structure, 12 Rocker, 14 Front pillar, 16 Center pillar, 18 Rear wheel house, 20 Rear pillar, 22 Roof side rail, 24 Inner reinforcement (inner panel member), 24a Body part, 24b, 24c Flange Part, 26 outer reinforcement (outside panel member), 26a body part, 26b, 26c flange part, 28 surface panel, 30 bridge plate.

Claims (1)

An inner panel member located in the vehicle width direction and extending in the vehicle vertical direction;
An outer panel member that is located on the outer side in the vehicle width direction and extends in the vehicle vertical direction, is joined to corresponding side edges of the inner panel member at both side edges, and forms a closed cross-sectional structure together with the inner panel member An outer panel member;
In a part of the vehicle vertical direction, a flat bridge plate connecting both side edges of the inner panel member and the outer panel member;
A vehicle center pillar.

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