JP3265742B2 - Panel joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the joining of two panels, such as automobiles, ships, office equipment, steel furniture, and the like, and another panel is superimposed on the flange of these panels, and the panel is hemmed by the hem flange of the other panel. It relates to the structure used for the joint.

[0002] An example used for a door of an automobile will be described below.

Conventionally, this type of panel joint structure is shown in FIG.
The following are known. In the drawing, reference numeral 1 denotes a door inner reinforce. One end of the door inner reinforce 1 and one end of the door inner panel 3 are welded and joined.
Thus, the front ends of the flanges 5 and 7 are aligned, and are hemmed and assembled with the hem flange 11 of the door outer panel 9 to form the door 13. The thickness of the door inner panel 3 is approximately 1/2 to 1/3 of the thickness of the door inner reinforcement 1.

[0004]

However, in order to make the flanges 5 and 7 overlapping with the door outer panel 9 flush with each other, a notch is formed in the door inner reinforcer 1 from the flange 5 to a portion of the flange 5 from the root to the back. The part 5a is formed, and a cutting step is added in the pressing step, resulting in an increase in man-hours and an increase in cost. At the same time, a gap also occurs in the butted portions of the flanges 5 and 7, which makes the appearance poor.
The workability of the paint seal was poor, and the seal was likely to be incomplete.

[0005] In the case of a structure that dislikes this and hems with the flanges 5 and 7 overlapped without forming the cutout portion 5a, the overlapping portion becomes thicker than the other portions (that is, the plate thickness of the overlapping portion is reduced). Therefore, the thickness of the door inner panel 3 becomes four times as large as that of the single part.) Therefore, it is necessary to adjust the pressure of the hemming press only here, which increases the man-hours, and causes distortion or linear deformation on the outer surface. There was no change in the tendency for traces to occur.

Therefore, the present invention does not leave any distortion or linear marks on the outer surface at the joint of the two panels, eliminates gaps even on the hemming side, has good appearance, and has good paint seal workability. It is intended to provide a panel joint structure with a small increase in man-hours.

[0007]

In order to achieve this object, the present invention provides a first panel and a second panel which are connected to each other.
By combining them, each of the panels in both panels is
In a panel joint structure in which a part of a flange overlaps, a third panel overlaps with the flange , and a hem flange of the third panel is put over the tip of the flange and hemmed, the second panel of the flange of the first panel is hemmed. Forming a jog portion within a range where the tip of the hem flange is not reachable at a thickness of the second panel at a root portion overlapping with a flange of the panel, and forming an overlapping portion that fits in the jog portion on the flange of the second panel; The first panel on the side overlapping the third panel
The panel joint portion structure is characterized in that the flanges of the panel and the second panel are flush with each other.

[0008]

The overlapping panel formed on the flange of the second panel is housed in the joggle formed on the flange of the first panel, and the two panels are joined together. Hemming. The hem flange makes a jiggle so as not to reach the joggle or shortens the width of the hem flange. For this reason, the flushness is ensured, and a very small gap is generated at the abutting portion of the flanges 5 and 7. Therefore, even if hemming is performed, there is no adverse effect on the outer plate, and workability of welding and paint sealing can be performed satisfactorily.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIGS. 1 to 4 show an embodiment in which the present invention is applied to an automobile door having a panel joint structure. The same or equivalent parts and members as those of the conventional example are denoted by the same reference numerals, and redundant description will be omitted.

As can be seen from FIG. 1, one end of the door inner reinforcement 1 as the first panel and the door inner panel 3 as the second panel are weighted by welding such as spot welding.
Door inner reinforcement 1
And one of the flanges 5 and 7 of the door inner panel 3
Parts overlap, and here their tips are almost straight
A door outer panel 9 as a third panel is overlapped with the flanges 5 and 7 so as to be linearly arranged.
The hem flange 11 of FIG. 1 covers over the front end where the flanges 5 and 7 are aligned, and has a panel joint structure to be hemmed.

FIG. 1 is an enlarged view of a joint portion indicated by a solid line in FIG. The portion indicated by the solid line in FIG.
The door inner reinforce 5 and the door inner panel 7 are joined at a joint indicated by a Y line. The reason for this division is that the door inner reinforce 1 is attached to a pillar (not shown) via a hinge (not shown), so that the plate thickness is approximately twice as thick as the door inner panel 3 to secure rigidity. It is because.
Therefore, in the case of the same thickness in this example, it is not necessary to adopt such a structure because it can be press-molded integrally, but in other application examples, there may be a case of joining with the same thickness. Of course.

The flange 5 of the door inner reinforcement 1
The jog portion 15 is formed by joggling the thickness of the door inner panel 3 at a root portion overlapping the flange 7 of the door inner panel 3. The jog 15 is formed in a range where the tip of the hem flange 11 of the door outer panel 9 does not reach from the root portion of the flange 5.
The flange 7 has a superimposed portion 17 that fits in the jog 15 and overlaps with the door inner reinforcement 5, and the flanges 5 and 7 on the side overlapping with the door outer panel 9 are flush with each other. As shown in FIG. 3, when the overlapping portion 17 comes out of the jog portion 15, the end surface of the flange 5 is opposed to the end surface of the flange 5 on the joining side with the flange 7, and is assembled with almost no gap therebetween.

FIG. 2 shows a cross section of this part. The door inner panel 3 is joined to the jog part 15 of the door inner reinforcement 1 with the overlapping part 17 of the door inner panel 3 inserted therein.
The door outer panel 9 is assembled by hemming the hem flange 11. The hem flange 11 and the jog part 15 have a length and a size that do not interfere with each other. Therefore, the hem flange 11 may have the same length over the entire length, or may be shortened near the jog 15 as shown in FIGS. However, it is preferable to cover as much as possible the gap formed at the abutting portion of the flanges 5 and 7 with the hem flange 11.

After being assembled in this manner, paint sealing is applied to the entire joint 19 (up to the hem flange 11) indicated by the solid line on the right side of the joint shown in FIG.
To prevent water from entering the seam from leaking from the seam 19.

[0016]

As described above, according to the present invention, the jog portion is provided on one of the flanges of the panel joint portion, and the other portion is provided with a superimposed portion that fits in the jog and is joined flush, and another panel is superimposed on this. The hem flange is hemmed so that it does not touch the jog, so there is no distortion or linear marks on the outer surface, there is no seam gap on the hemming side, and the appearance is improved, and paint seal This improves the workability and reliability of the panel and can provide a panel joint having reduced man-hours.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an example in which an embodiment of a panel joint structure according to the present invention is applied to an automobile door.

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

FIG. 3 is a perspective view seen from the arrow direction of FIG. 2;

FIG. 4 is an enlarged perspective view of a main part showing that the main part of FIGS. 1 to 3 is a lower corner part of a door.

FIG. 5 is a perspective view of a portion corresponding to FIG. 1 of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... 1st panel (door inner reinforcement) 3 ... 2nd panel (door inner panel) 5, 7 ... Flange 9 ... 3rd panel (door outer panel) 11 ... Hem flange 15 ... Jog part 17 ... Overlapping part

────────────────────────────────────────────────── (5) References JP-A-57-190736 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21D 19/08 B21D 39/02 B60J 5 / 04

Claims (1)

(57) [Claims] A first panel and a second panel are overlapped and joined.
, Each franc in both panels
Part of the flange overlaps, the third panel overlaps the flange,
In a panel joint structure in which a hem flange of the third panel is hemmed over the flange tip, a root portion of the first panel flange overlapping the second panel flange has a thickness of the second panel, Forming a jog portion in a range where the tip of the hem flange does not reach, forming an overlapping portion that fits in the jog portion on the flange of the second panel, and the flanges of the first panel and the second panel on the side overlapping the third panel; Panel joint structure, characterized in that they are flush with each other.