JPH0780559A - Structure of panel joining part - Google Patents

Abstract

PURPOSE:To improve the appearance, and improve the workability and reliability of a paint seal by providing a joggle part on one of flanges of a panel joining part, and providing a superposed part to be stored in this joggle so as to be joined flush, overlapping other panel thereon, and realizing fabrication through hemming. CONSTITUTION:A superposed part 17 of a door inner panel 3 is joined in a complicated manner to a joggle part 15 of a door inner reinforce 1, and a door outer panel 9 is fabricated by hemming a hem flange 11. The hem flange 11 and the joggle part 15 are of the length and size so as not to interfere with each other. Thus, the length of the hem flange 11 may be same over the full length, or may be shorter in the vicinity of the joggle part 15. However, the clearance of the abutted part of the flanges 5, 7 is covered by the hem flange 1 as much as possible. After this fabrication, the paint seal is applied to the whole of the seal 19, preventing the water entered inside the door from leaking out of the seam 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel which is joined by joining two panels such as an automobile, a ship, an office equipment, and steel furniture, and another panel is overlapped with a flange of these panels, and which is hemmed by a hem flange of the other panel. The present invention relates to a structure used for a joint part.

Hereinafter, an example used for an automobile door will be described.

[0003]

2. Description of the Related Art Conventionally, this type of panel joint structure has been shown in FIG.
Those shown in are known. In the figure, 1 is a door inner reinforcement, and the respective flanges 5 and 7 which are continuously aligned by welding and joining the door inner reinforcement 1 and the door inner panel 3 are hemmed by the hem flange 11 of the door outer panel 9. It is assembled and the door 13 is constructed. The plate thickness of the door inner panel 3 is approximately 1/2 to 1 of the plate thickness of the door inner reinforcement 1.
It is about / 3.

[0004]

However, in order to make the flanges 5 and 7 overlapping the door outer panel 9 flush with each other, the door inner reinforcement 1 is provided with a notch extending from the root of the flange 5 to the part further inward. The portion 5a is formed, and a cutting step is added in the pressing step, which causes an increase in man-hours and cost. At the same time, a gap is created in the abutting portion of the flanges 5 and 7, and the appearance is poor,
The workability of the paint seal was poor, and the seal was likely to be incomplete.

Dislike this, in the case of a hemming structure in which the flanges 5 and 7 are overlapped without forming the notch 5a, this overlapping portion is thicker than other portions (that is, the thickness of the overlapping portion is , The thickness of the door inner panel 3 is 4 times as large as that of the part of the door inner panel 3). There was no change in that traces were likely to occur.

Therefore, according to the present invention, no distortion or linear marks are left on the outer surface at the joint portion of the two panels, there is no gap on the hemming side, the appearance is good, and the workability of the paint seal is good. It is an object of the present invention to provide a panel joint structure with a small increase in man-hours.

[0007]

In order to achieve this object, according to the present invention, by joining the first panel and the second panel, the flanges of the first and second panels are continuously aligned, and In a panel joint structure in which a third panel is overlapped and a hem flange of the third panel is covered and hemmed over the tip of the flange, the second portion is formed at a root portion of the flange of the first panel overlapping with the flange of the second panel. The first panel on the side that overlaps the third panel is formed by forming a joggle portion within the range of the hem flange tip within the plate thickness of the panel, and forming an overlapping portion that fits in the jogle portion on the flange of the second panel. Also, the panel joint portion structure is characterized in that the flanges of the second panel are flush with each other.

[0008]

Operation: The jog formed on the flange of the first panel is accommodated in the overlapping portion formed on the flange of the second panel to join the two panels, and the two flanges on the side overlapping the third panel are flush with each other to form the hem flange. Hemming. The hem flange is made so that it does not reach the joggle, or the width of the hem flange is shortened. For this reason, a flush surface is ensured, and very few gaps are formed at the abutting portions of the flanges 5 and 7. Therefore, even if hemming is performed, the outer plate is not adversely affected, and the workability of welding and paint sealing can be excellent.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

1 to 4 show an embodiment applied to a vehicle door having a panel joint structure of the present invention. The same reference numerals are given to the same or equivalent parts and members as those of the conventional example, and the duplicated description will be omitted.

As can be seen from FIG. 1, the door inner reinforcement 1 which is the first panel and the door inner panel 2 which is the second panel are joined by welding such as spot welding, whereby the door inner reinforcement 1 and the door inner. The flanges 5 and 7 of the panel 2 are continuously aligned, the door outer panel 9 which is the third panel is overlapped on these flanges 5 and 7, and the hem flange 11 of the door outer panel 9 is covered over the tips of the flanges 5 and 7 and hemmed. It has a panel joint structure.

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

The flange 5 of the door inner reinforcement 1
The jogger portion 15 is formed by joggling the plate thickness of the door inner panel 3 at the root portion of the door inner panel 3 that overlaps the flange 7. The joggle portion 15 is formed in such a range that the tip of the hem flange 11 of the door outer panel 9 cannot reach from the root portion of the flange 5.
Further, the flange 7 is formed with an overlapping portion 17 which is housed in the joggle portion 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, the overlapping portion 17 is assembled with the end surface facing the joint side of the flange 5 and the flange 7 when coming out from the joggle portion 15 with almost no gap therebetween.

A cross section of this portion is shown in FIG. 2, and is joined in a state where the overlapping portion 17 of the door inner panel 3 is inserted into the joggle portion 15 of the door inner reinforcement 1.
The door outer panel 9 is assembled by hemming the hem flange 11. The hem flange 11 and the joggle portion 15 have lengths and sizes 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 in the vicinity of the joggle portion 15 as shown in FIGS. 1 and 3. However, it is preferable to cover the gap formed at the abutting portion of the flanges 5 and 7 with the hem flange 11 as much as possible.

After being assembled in this manner, a paint seal is applied to the entire seam 19 (up to the hem flange 11) shown by the solid line on the right side of the joint portion shown in FIG.
The water that has entered the inside of the is prevented 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 joining portion, and the overlapping portion that fits in the jog is provided on the other side to join the surfaces flush with each other, and the other panel is superposed thereon. Since the hem flange is assembled by hemming so that it does not hang on the joggle part, there is no distortion or linear marks on the outer surface, there is no gap on the seam on the hemming side, and the paint seal is good. It is possible to provide a panel joint with improved workability and reliability and reduced man-hours.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts of an example in which an embodiment of the panel joint structure of 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 as seen from the direction of the arrow in FIG.

FIG. 4 is a more 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.

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

[Explanation 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 ... Joggle part 17 ... Superposition part

Claims (1)

[Claims] 1. The first and second panels are joined together so that the flanges of the first and second panels are continuously aligned,
In a panel joint structure in which a third panel overlaps the flange, and a hem flange of the third panel is covered and hemmed over the flange tip, a root portion of the flange of the first panel overlapping the flange of the second panel The plate thickness of the second panel forms a joggle portion within a range that the tip of the hem flange does not reach, and an overlapping portion that fits in the jogle portion is formed on the flange of the second panel, and the overlapped side with the third panel is formed. A panel joint structure, wherein the flanges of the first panel and the second panel are flush with each other.