JP2010083255A - Locker structure of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reduced-weight locker for automobile while maintaining high rigidity. <P>SOLUTION: The locker for automobile 1 includes a closed cross section formed of an outer panel 11 and an inner panel 12 and is provided with a reinforcement 2 thereinside. A guide rail for a slide door is provided in a locker rear part 1B forming a lower edge of a slide door opening 5, and the locker structure for automobile includes a locker front part 1A and the locker rear part 1B, whose cross sections differ in shape. The reinforcement 2 is divided into a front reinforcement 2A and a rear reinforcement 2B; the front reinforcement 2A is configured of a straight-lined high tensile steel sheet which forms an identical cross section at front and rear at yield stress of 580 MPa or more. The rear end of the front reinforcement 2A and the front end of the rear reinforcement 2B are overlapped and joined at a locker intermediate part 1C to which a lower end of a center peeler 6 is connected; and thus, the entire locker is reduced in weight while maintaining high rigidity. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an automobile locker, and more particularly to a locker structure in which a guide rail for a sliding door is provided in the rear half.

In some automobiles, as shown in FIG. 7, the rear door opening 5 on the side surface of the vehicle body corresponding to the rear seat is opened and closed by the slide door SD, and the ease of getting on and off the rear seat is improved. As shown in FIGS. 7 and 8, this type of vehicle includes a rocker 1 that extends in the front-rear direction along the lower edge of the side surface of the vehicle body, and on the rear side of the rocker that forms the lower edge of the rear door opening 5. There is a groove portion 13 having a substantially U-shaped cross section that opens toward the inside, and a guide rail that supports and guides the lower end of the slide door (not shown) is provided in the groove portion 13 (see, for example, Patent Document 1).
7 and 8, 4 is a front door opening, FD is a front door, 6 is a center pillar, 7 and 8 are front pillars and rear pillars, and the pillars 6, 7 and 8 are coupled to the rocker 1 at the lower ends. Yes.

  As shown in FIG. 3, the locker 1 has a closed cross section with an outer panel 11 and an inner panel 12. The locker 1 is integrally formed over the entire length in the front-rear direction inside the locker 1 along the inner surface of the outer panel 11 in the vehicle width direction. It has a basic structure in which a reinforce 2 having a substantially hat-shaped section is provided.

By the way, in the latter half of the rocker, an opening is formed along the upper edge of the outer panel 11, and the upper half of the reinforcement 2 is removed to provide a space in the upper half of the rocker. A member is provided so as to communicate with the opening edge to form a sliding door guide groove 13.
JP 2008-24268 A

However, the conventional rocker 1 of this type has a sudden change in cross-sectional shape at the boundary between the front half and the rear half, so that the rigidity against a frontal collision or a side collision of the vehicle is reduced. Therefore, the thickness of the reinforcement 2 is increased in order to ensure rigidity, but there is a problem in that the weight of the rocker 1 increases.
Therefore, if a high-strength steel plate is used as the reinforcement 2, high rigidity can be obtained without increasing the plate thickness. However, the high-tensile steel plate cannot be said to have good formability, and the reinforcement 2 whose cross-sectional shape changes greatly before and after is formed. Difficult to do.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automobile rocker structure that can sufficiently secure rigidity with respect to an impact at the time of a front and side collision of a vehicle and is reduced in weight.

The present invention is an automotive rocker that extends in the front-rear direction along the lower edge of the side of the vehicle body and forms the lower edge of the front door opening on the side of the vehicle body and the sliding door opening behind the vehicle door, and is closed by the outer panel and the inner panel. The locker has a cross-sectional hat shape along the outer panel, and a reinforce that partitions the locker in the vehicle width direction is installed in the locker. In an automotive rocker structure in which a groove portion extending in the front-rear direction is provided in a substantially U-shape, and a lower rail for sliding door guidance is provided in the groove portion,
The reinforcement is divided into a front reinforcement located in the first half of the rocker and a rear reinforcement located in the second half of the rocker,
The front reinforcement is composed of a linear high-tensile steel plate having substantially the same cross-sectional shape in the front-rear direction,
The rear end of the front reinforcement and the front end of the rear reinforcement are overlapped and connected at the front and rear intermediate positions of the rocker to which the lower end of the center pillar is coupled,
The overlapping width of the connecting portions of both reinforcements is matched with the front-rear width of the connecting portion between the center pillar and the rocker.
The reinforce is divided into a front reinforce and a rear reinforce, and particularly high rigidity is required for vehicle front collisions. Strengthening and weight reduction are made.
In addition, the rear end of the front reinforcement and the front end of the rear reinforcement are overlapped and connected over the entire front and rear width of the joint between the lower end of the center pillar and the rocker. The rigidity of the connecting part can be secured and the locker can be prevented from being bent.

The front reinforcement is composed of a high-tensile steel plate having a yield stress of 580 MPa or more.
High rigidity can be obtained with a thinner plate thickness than before.

The groove part of the rocker is formed along the upper half part of the rocker rear half part, and the front end thereof extends to the front and rear intermediate position of the joint part of the center pillar and the rocker,
The rear edge of the overlap connecting portion of the front reinforcement and the rear reinforcement is positioned in front of the front end of the groove in the upper half, and the connecting portion with the center pillar behind the front end of the groove in the lower half It is located at the rear end (claim 3).
The upper half of the rear end of the front reinforcement avoids the front end of the groove and reaches the middle position of the center pillar, while the lower half is the lower half of the front end of the rear reinforcement and the rear end position of the joint of the front pillar. As a result, the rigidity of the connecting portion is ensured.

An embodiment of the present invention will be described. In the present embodiment, the present invention is applied to a locker in which a guide rail for supporting and guiding the lower end of the slide door is provided in the rear half portion forming the lower edge of the slide door, as in the conventional structure.
FIG. 1 is a perspective view of the interior of the rocker as seen from the inside of the vehicle. As indicated by phantom lines, the rocker 1 is a long member extending in the front-rear direction along the lower edge of the side surface of the vehicle body. The lower edge of the door opening 4 is formed, and the rear half 1B of the locker forms the lower edge of the sliding door opening 5.

  The lower end of the center pillar 6 that divides the openings 4 and 5 is coupled to the rocker 1 at an intermediate position (hereinafter referred to as a rocker intermediate portion) 1C. The lower end of the center pillar 6 has an enlarged front-rear width. A front pillar 7 lower end and a rear pillar 8 lower end are coupled to the front end and the rear end of the rocker 1, respectively.

  The solid line in FIG. 1 shows the reinforcement 2 installed in the locker 1. The reinforcement 2 has a divided structure including a front reinforcement 2A located in the rocker front half 1A, and a rear reinforcement 2B located in the rocker rear half 1B and having a groove 13 that has a cross-sectional shape different from that of the rocker front half 1a. .

The rear end of the front reinforcement 2A and the front end of the rear reinforcement 2B are connected by a rocker intermediate portion 1C to which the lower end of the center pillar 6 is coupled, and the connection portion of both reinforcements 2A and 2B is the center. They are overlapped and connected in a range from the front end to the rear end of the connecting portion between the pillar 6 and the rocker 1.
The groove part 13 is formed along the upper half part of the vehicle outer surface of the rocker rear half part 1B, and the front end of the groove part 13 extends substantially to the front-rear center position of the rocker intermediate part 1C.

Hereinafter, the shape of the front and rear reinforcements 2A and 2B and the structure of the connecting portion between the two reinforcements 2A and 2B will be described with reference to FIGS.
As shown in FIG. 1 to FIG. 3, the front reinforcement 2A has a vertical center portion 21a projecting to the outside of the vehicle, upper and lower side portions 22a and 23a, and upper and lower flange portions 24a and 25a. Form a hat shape. The ridge line of the bent portion between the central portion 21a and the upper and lower side surface portions 22a and 23a, and the ridge line of the bent portion between the upper and lower side surface portions 22a and 23a and the upper and lower flange portions 24a and 25a are respectively straight in the front-rear direction. It is made of a high-tensile steel plate having substantially the same cross section in the front-rear direction and having a yield stress of 580 MPa or more.

  The front reinforcement 2A is arranged along the inner surface of the outer panel 11 inside the front half 1A of the rocker, and the upper and lower flange portions 24a and 25a are connected to the upper flange portion of the outer panel 11 and the inner panel 12, respectively. It is installed so that it is welded together and the inside of the locker 1 is partitioned in the vehicle width direction.

  As shown in FIGS. 1, 2, 4, and 5, at the rear end of the front reinforcement 2A, the rear end edge of the upper half is the front-rear direction of the lower end of the center pillar 6 coupled to the rocker intermediate portion 1C. Located at the center, the rear end edge of the lower half extends backward, and the rear end edge of the front reinforcement 2A has a stepped shape.

  The rear reinforcement 2B is made of a steel plate that has been conventionally used as a reinforcement, and the front edge of the front end corresponds to the central portion 21a, the upper and lower side surfaces 22a and 23a, and the upper and lower flange portions 24a and 25a of the front reinforcement 2A. The center portion 21b, the upper and lower side surface portions 22b and 23b, and the upper and lower flange portions 24b and 25b have a hat shape in cross section. The rear reinforcement 2B has its front end edge positioned at the front end of the lower end of the center pillar 6 It is overlapped and connected to the rear end of the partial reinforcement 2A.

As shown in FIGS. 2, 5, and 6, the rear reinforcement 2 </ b> B has a groove portion 13 in the front-rear direction in the upper half thereof. The groove 13 has a front end near the front edge of the rear reinforcement 2B, and the depth of the groove 13 follows the path when the sliding door is closed and opened, as shown in FIGS. The side (FIG. 5) is formed deeper than the general part (FIG. 6).
The groove 13 forms an opening in the upper half of the outer panel 11 of the rocker rear half 1B, and a panel member 14 having a substantially U-shaped cross section is provided in the upper space of the rocker rear half, and the opening end of the panel member 14 is the opening of the outer panel 11 It is formed by superposing and welding to the bent portion. A guide rail R for guiding the slide door is provided along the inner side of the groove 13.

  Corresponding to the groove portion 13, the rear reinforcement 2B has its upper half, that is, the side surface portion 22b and the upper flange 24b omitted, and the lower flange 25b is integrally formed with the lower flange portion of the outer panel 11 and the inner panel 12. The upper end portion of the rear reinforcement 2B is welded to the lower surface of the panel member 14 at the front portion of the groove portion 13 and welded to the lower surface and the bottom surface of the panel member 14 at the rear portion. In addition, in the front part (FIG. 5) of the groove part 13, the vehicle interior end of the panel member 14 which penetrates the inner panel 12 and protrudes to the vehicle inner side is covered with a cover member 15.

As shown in FIGS. 2, 4, and 5, the rear reinforcement 2B has its front edge positioned at the front end of the lower end of the front pillar 6, and the front end is overlapped and welded to the inner surface of the rear end of the front reinforcement 2A. It is. Thereby, in the connection part of both reinforcement 2A, 2B, the upper half part is connected in the front position of the front end of the groove part 13, and the lower half part is the position under the groove part 13, and is the range over the front-back width of the lower end of the front pillar 6. It is connected.
At the rear end portion of the rocker rear half portion 1B, the upper edge portion of the rear reinforcement 2B along the back bottom surface of the panel member 14 is further extended upward to form a flange portion, which is formed above the outer panel 11 and the inner panel 12. Are joined together (see FIG. 1).

  According to the present embodiment, the rocker 1 is reinforced, and the reinforcement 2 having different cross-sectional shapes in the front and rear is divided into the front reinforcement 2A and the rear reinforcement 2B, so that an impact from the front in the event of a vehicle frontal collision or the like. The front reinforcement 2A, which is especially large, is made of a high-strength steel plate and is formed in a straight line with the same cross section in the front-rear direction. High rigidity is exhibited.

  In addition, since the connecting portion between the divided front reinforcement 2A and the rear reinforcement 2B is provided at the connecting portion between the center pillar 6 and the rocker 1, and the connecting portion has a width extending across the entire width of the connecting portion, In addition, against the side collision, the intermediate portion 1C of the rocker 1 exhibits a high rigidity against bending deformation because the lower end of the center pillar 6 is integrated with the connecting portion to receive an impact.

  In addition, since the upper half part of the reinforcement 2B is missing in the rear position of the connection part of both reinforcements 2A, 2B, the rigidity of the locker 1 is lower than the other parts. More likely to bend and deform. However, this part is a foot space for the occupant in the rear seat, and the influence of the bending deformation on the occupant's safety is small.

It is the perspective view seen from the vehicle inner side diagonal front of the reinforcement used for the rocker structure of this invention. It is an expansion perspective view which shows the connection part of the front reinforcement which comprises the said reinforcement, and a rear reinforcement. It is sectional drawing in the position which follows the III-III line of FIG. It is sectional drawing in the position which follows the IV-IV line of FIG. It is sectional drawing in the position in alignment with the VV line | wire of FIG. It is sectional drawing in the position in alignment with the VI-VI line of FIG. It is a side view of the vehicle provided with the door opening opened and closed by a sliding door. It is a side view which shows the conventional locker.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rocker 1A Rocker front half 1B Rocker latter half 1C Rocker middle part 11 Outer panel 12 Inner panel 13 Groove part 2 Reinforce 2A Front reinforce 21a Central part 22a Upper side part 23a Lower side part 24a Upper flange part 25B Lower flange part 2B Rear part Reinforce 21b Central part 22b Upper side part 23b Lower side part 24b Upper flange part 25b Lower flange part 6 Center pillar SD Slide door R Guide rail

Claims (3)

A car rocker that extends in the front-rear direction along the lower edge of the side of the vehicle body and forms the lower edge of the front door opening on the side of the vehicle body and the sliding door opening behind the vehicle body, and has a closed cross section with the outer panel and the inner panel, In addition, a rein force that partitions the inside of the locker in the vehicle width direction is installed in the locker along the outer panel, and the rear half of the locker that forms the lower edge of the sliding door opening has a substantially U-shaped cross section on the outer surface of the vehicle. In the automobile rocker structure in which a groove portion extending in the front-rear direction is provided, and a lower rail for sliding door guidance is provided in the groove portion,
The reinforcement is divided into a front reinforcement located in the first half of the rocker and a rear reinforcement located in the second half of the rocker,
The front reinforcement is composed of a linear high-tensile steel plate having substantially the same cross-sectional shape in the front-rear direction,
The rear end of the front reinforcement and the front end of the rear reinforcement are overlapped and connected at the front and rear intermediate positions of the rocker to which the lower end of the center pillar is coupled,
An automotive rocker structure characterized in that the overlapping width of the connecting portions of both reinforcements is matched with the front-rear width of the coupling portion between the center pillar and the rocker. The vehicle locker structure according to claim 1,
A car rocker structure in which the front reinforcement is made of a high-tensile steel plate having a yield stress of 580 MPa or more. The automobile locker structure according to claim 1 or 2,
The groove part of the rocker is formed along the upper half part of the rocker rear half part, and the front end thereof extends to the front and rear intermediate position of the joint part of the center pillar and the rocker,
The rear edge of the overlap connecting portion of the front reinforcement and the rear reinforcement is positioned in front of the front end of the groove in the upper half, and the connecting portion with the center pillar behind the front end of the groove in the lower half A car locker structure located at the rear end of the car.