JP2595818B2 - Roof side inner structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof side inner structure for providing a reinforcing function to a roof side inner portion of a passenger car.

[0002]

2. Description of the Related Art In general, a roof side inner part of a passenger car, particularly a two-box car, is usually constructed by using a reinforcement having a groove-shaped cross-sectional structure in order to secure body rigidity. . 12 to 15 show a conventional roof side inner reinforcement structure using a reinforcement having a groove-shaped cross section. FIG.
, The arrow FR indicates the forward direction of the vehicle. As shown in the figure, the roof side inner panel 50 is made of a roof side inner 51 and a roof side inner rear 52, which are overlapped with each other at a longitudinal end and joined by spot welding.

In order to increase the rigidity of the rear portion of the rear body, a first reinforcement 53 and a second reinforcement 54 having a groove-shaped cross section are provided on the outdoor side with the roof side inner 51 and the roof side inner rear 52. Are joined by spot welding. In addition, when both reinforcements used here are manufactured as one piece,
In addition to being long, it is difficult to obtain a flat joint surface (flange surface) as a whole, especially because the lower side is greatly curved. Is what it is. Also,
As shown in FIG. 13 showing a cross section taken along the line JJ, the roof side inner rear 52 is also connected to a lower back reinforcement 54 connected to a lower back panel 55 and a quarter panel 56, whereby the rear body corner is formed. The rigidity of the part is also ensured. In FIG. 12, the welding points of the two sheets overlapped are indicated by a cross mark, and the welding points of the three sheets overlapped are indicated by a symbol with a cross in the circle.
In FIG. 15, the welding points are indicated by × regardless of the number of joints.
This is indicated by a mark.

[0004]

However, in the above-described conventional roof side inner structure, the roof side inner 51 and the roof side inner rear 52 are provided to secure rigidity.
Reinforcement 5 divided into two spanning the entire length of
Due to the use of 3,54, there was a problem in that the weight ratio occupied by the reinforcement was large and many welding points were required.

Accordingly, the present invention provides a roof side inner structure which solves the above-mentioned conventional problems by providing the roof side inner panel itself with a reinforcing function as a reinforcement. Aim.

[0006]

Means for Solving the Problems In order to solve the above problems, the present invention is configured as follows. That is, the present invention relates to a roof side inner structure in which a roof side inner panel and a roof side inner panel located on the rear side of the roof side inner panel are configured to be overlapped and joined to each other at a longitudinal end portion. A plate formed integrally with the roof side inner panel with a bead bulging outwardly along the longitudinal direction thereof, and a part of the bead welded to the indoor side of the roof side inner panel by spot welding. It is characterized by having a closed cross-section by closing with.

[0007]

According to the present invention having the above-described structure, the rigidity relating to the rear portion of the rear body is ensured by the bead formed on the roof side inner panel and the plate welded to close the bead, which has been used in the conventional structure. It is possible to abolish all or a part of the reinforcement having a groove-shaped cross section made of another member.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. First, a first embodiment shown in FIGS. 1 to 5 will be described. 1 is an indoor view of the roof side inner structure, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB of FIG. 1, and FIG. FIG. 5 shows a cross section taken along line DD of FIG. In addition, the arrow FR in FIG. 1 shows the forward direction of the vehicle, and the X mark shown in each drawing represents a welding point.

As shown in the figure, the roof side inner panel 1 at the rear of the roof side is divided into a roof side inner 2 and a roof side inner rear 3 as in the conventional case, and they are placed at the longitudinal end portions to mutually intersect. And are joined by spot welding. In the drawings, the crosses represent spot welding of two sheets.

The roof side inner 2 and the roof side inner rear 3 are integrally formed with deep drawn beads 4 and 5 swelling outward in the longitudinal direction, respectively. The beads 4 and 5 have the same cross-sectional shape as the conventional reinforcement described above, are aligned at the joint between the roof side inner 2 and the roof side inner rear 3, and both ends are open ends. . Although the front side of the roof side inner 2 is omitted in FIG. 1, the bead 4 is formed up to the vicinity of the front end of the roof side inner 2.

However, a flat patch material 6 is abutted on the indoor side of the roof side inner 2 and the roof side inner rear 3 so as to cross the bead 4 and is joined by spot welding. Accordingly, the bead 4 of the roof side inner 2 and the bead 5 of the roof side inner rear 3 are both partially closed by the patch material 6 and partially closed as shown in FIG.

The corner of the bead 5 of the roof side inner rear 3 is also closed by an existing lower back reinforcement 7. That is, as shown in FIGS. 3 and 5, the lower back reinforcement 7 having the groove-shaped cross section is disposed between the roof side inner rear 3 and the lower back panel 8 which is disposed at right angles thereto. The flange portion 7a, which is a joint surface with the roof side inner rear 3 and the lower back panel 8, is formed in an angle shape, while the groove portion 7b is formed in a substantially triangular appearance.

The lower back reinforcement 7 has a flange 7a whose roof side inner rear 3
Are joined by spot welding in a state where the beads 5 are abutted across the bead 5 so as to cross the bead 5, whereby the bead 5 is partially closed. In FIGS. 3 and 5, reference numeral 9 denotes a quarter panel.

As described above, in the roof side inner structure according to this embodiment, the beads 4 and 5 provided on the roof side inner 2 and the roof side inner rear 3 are provided with a plurality of patch materials 6 and a lower back reinforcement. 7, the roof side inner panel 1 itself is provided with a reinforcing function by forming a closed cross-section by the flange portions 7a. Can be provided.

As a result, the conventionally used reinforcement becomes unnecessary, so that the weight of the roof side portion can be reduced, and the number of spot welding points for connecting members can be reduced. You. Further, the patch material 6 as a plate used for forming the closed sections of the beads 4 and 5 can utilize the remaining material of other parts and the like, which is effective in improving the total yield.

Next, a second embodiment of the present invention will be described with reference to FIGS.
A description will be given based on FIG. In FIG. 6, 2
Welding points for sheet stacking are indicated by crosses, and welding points for sheet stacking are indicated by symbols with crosses in circles. In FIGS. 7 to 11, welding points are indicated by crosses regardless of the number of welded sheets. Is shown. The arrow FR in FIG. 6 indicates the forward direction of the vehicle.

The roof side inner structure according to this embodiment has a groove-shaped cross section corresponding to the above-mentioned first conventional reinforcement 53 on the outdoor side of the roof side inner panel 2 of the roof side inner panel 1. While the hosement 10 is provided, the roof side inner rear 3 is provided with a bead 5 which swells to the outdoor surface side, and the reinforcement 1
It is configured to be continuous with 0.

That is, the reinforcement 10 is shown in FIG.
As shown in FIG. 5, the rear end portion has a length such that it covers a part of the outer surface of the bead 5, and the entire length is flat with respect to the roof side inner 2 and the roof side inner rear 3 due to manufacturing technology. The length is set within a range where a (non-distorted) joint surface can be formed. The bead 5 of the roof side inner rear 3 is partially closed by the lower back reinforcement 7. That is, as shown in FIG. 10, a flange portion 7a which is a flat surface portion of the lower back reinforcement 7 having the same shape as that shown in the first embodiment is abutted so as to cross the bead 5, and is joined by hot welding. As a result, a reinforcement function corresponding to the conventional second reinforcement 54 is provided.

The portion of the terminal portion of the reinforcement 10 that covers a part of the bead 5 and that overlaps with the flange portion 7a of the lower back reinforcement 7 is spot-welded with the roof side inner rear 3 in three layers. Have been.

According to the present embodiment constructed as described above, the rear portion of the rear body having the rigidity corresponding to the second reinforcement 54 can be provided after the second reinforcement 54 is eliminated. Reinforcement 5
The weight can be reduced by an amount corresponding to 4 and the number of welding points can be reduced.

Although not shown, the roof side inner panel 2 of the roof side inner panel 1 is provided with a bead which swells toward the outdoor side, while the roof side inner rear 3 has the above-mentioned conventional side on the outdoor side. It is also possible to adopt a configuration in which a reinforcement having a groove-shaped cross section corresponding to the second reinforcement 54 is provided. In this case, it is preferable that the reinforcement be extended from a joint side end of the roof side inner rear 3 with the roof side inner 2, and the extended portion be covered with the bead of the roof side inner rear 3.

[0022]

As described in detail above, according to the present invention,
In the roof side inner structure, the roof side inner panel itself has the function of reinforcing the body rear inner part, so that all or part of the groove-shaped cross-section reinforcement conventionally used can be eliminated. It is very useful for reducing the weight and the number of spot welding points.

[Brief description of the drawings]

FIG. 1 is a side view showing a roof side inner structure according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 1;

FIG. 5 is a sectional view taken along line DD of FIG. 1;

FIG. 6 is a side view showing a roof side inner structure according to a second embodiment of the present invention.

FIG. 7 is a sectional view taken along line EE of FIG. 6;

FIG. 8 is a sectional view taken along line FF of FIG. 6;

FIG. 9 is a sectional view taken along line GG of FIG. 6;

FIG. 10 is a sectional view taken along line HH of FIG. 6;

FIG. 11 is a sectional view taken along line II of FIG. 6;

FIG. 12 is a side view showing a conventional roof side inner structure.

FIG. 13 is a sectional view taken along line JJ of FIG.

FIG. 14 is a sectional view taken along line KK of FIG.

FIG. 15 is a sectional view taken along line LL of FIG. 12;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roof side inner panel 2 Roof side inner 3 Roof side inner rear 4 Bead 5 Bead 6 Patch material 7 Lower back reinforcement

Claims (1)

(57) [Claims] 1. A roof side inner structure in which a roof side inner panel is formed by mutually joining a roof side inner and a roof side inner rear located rearward thereof at a longitudinal end portion. A plate formed integrally with the roof side inner panel with a bead bulging outwardly along the longitudinal direction thereof, and a part of the bead welded to the indoor side of the roof side inner panel by spot welding. Roof side inner structure with closed cross-section by closing.