JP2519778B2 - Body panel joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an end portion of a vehicle body panel having a curved sectional shape,
The present invention also relates to a structure in which end portions of a curved vehicle body panel are overlapped and bonded to each other, and more particularly to a bonding structure in which the bonding process of both panels can be automated and productivity can be improved. The present invention is suitable for joining a rear end of a rocker inner connected to a side edge of a front floor panel and a front end of a rocker rear inner connected to a rear floor panel. explain.

[Conventional technology]

Generally, an underbody that constitutes a floor of a passenger compartment or a luggage compartment of an automobile has a front panel front end connected to a dash panel disposed in a front portion of the vehicle body, and a rear floor front end connected to a rear end of the front floor. In addition to connecting the parts, rocker panels extending in the front-rear direction are connected to both side edges of the front floor and the rear floor.
In the case of manufacturing such an underbody, conventionally, for example, it is general to perform the procedure as shown in FIGS. 6 and 7. That is, the inside surface of the rocker rear inner 32 having a hat-shaped cross section is welded to the flange portions 31 on the left and right edges of the rear floor 30 in advance to manufacture a rear floor assembly, and the front end portion 30a of the rear floor 30 of the assembly is connected to the front floor. 34 rear end 3
4a is welded, and then the rear end 33a of the rocker inner 33 having a hat-shaped cross section is attached to the front end 32a of the rocker rear inner 32.
While stacking from the outside of the vehicle body, the inside surface of the rocker inner 33 is brought into contact with the flange portions 35 on both side edges of the front floor 34, the corresponding contact portion and the overlapping portion are welded, and then the rocker rear inner portion 32 and Rockinna
A rocker outer 36 is arranged on the outer side of 33, and upper and lower flange portions 37, 38 of the rocker outer 36 are welded.

[Problems to be solved by the invention]

By the way, in the process of assembling the vehicle body, it is required to improve productivity by automating as much as possible. However, in the case of the above-mentioned conventional assembling procedure, the above-mentioned demand cannot be met because it has to be done manually. However, there is a problem that productivity is low.

Here, in order to omit the manual process and automate it, the rocker inners 33 are connected to the left and right side edges of the front floor 34 in advance in the sub-assembly process, and the rocker inners are sub-assembled during the underbody assembly process. It is possible to connect to 32, in this case,
It is preferable to align both members in the vertical direction. However, since both the inners 32 and 33 are curved inwardly of the vehicle, the inner rocker 32 and the inner rocker 33 are locked.
It is impossible to fit them to each other in the vertical direction, and automation is difficult after all.

An object of the present invention is to automate the coupling of the rocker rear inner of the front floor assembly and the rear floor of the rear floor assembly in the underbody assembly process.
It is to provide a joint structure for a vehicle body panel that can improve productivity.

[Means for solving problems]

Therefore, the present invention has a structure in which an end of a curved outer panel and an end of a curved inner panel that can be fitted to the curved outer panel are overlapped and joined so that the outer panel wraps the inner panel. A cutout is formed in the lower part, and a protrusion that overlaps the edge of the cutout in the outer panel is formed in the lower part of the inner panel. It is characterized by being inverted so that it is located outside the panel.

Here, in the present invention, the outer panel refers to a panel formed so as to wrap the mating panel from the outside. Further, the notch portion is for avoiding interference between both panels when the two panels are stacked in the vertical direction, and the projecting portion is for sandwiching the outer panel.

[Action]

According to the joint structure for a vehicle body panel of the present invention, since the notch is formed in the outer panel, the curved panels can be vertically overlapped with each other and fitted together.
Also, when stacking both panels from above and below,
Since the positional relationship between the protruding portion of the inner panel and the edge portion of the cutout portion is set to be opposite to the positional relationship between the joint ends, both panels are sandwiched by each other.

Therefore, when joining the rocker inner and the rocker rear inner as described above, the rocker rear inner and the rocker inner are welded to the rear floor and the front floor respectively in the sub-assembly process in advance, and these are vertically joined during the underbody assembly process. Since both rocker inners can be fitted together by stacking them, automation can be realized by omitting manual assembly work, and productivity can be improved.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 are views for explaining a joint structure of a vehicle body panel according to an embodiment of the present invention. In this embodiment, a case of manufacturing an underbody will be described as an example.

In the figure, reference numeral 1 is an automobile to which the joining structure of the present embodiment is applied, and a vehicle body of the automobile 1 mainly has a floor panel 2 forming a floor portion of a passenger compartment and a roof panel forming a ceiling portion on the left, It is configured by connecting with the right side panel 5.

Although not shown, the floor panel 2 has a rear end portion of a front floor 8 whose front end portion is joined to a dash panel.
The front end portion 9a of the rear floor 9 is superposed on the 8a, and the overlapping portion is joined by spot welding. Also,
Flange portions 8b are formed on both side edges of the front floor 8 by bending, and the inner surface of the rocker inner 10 of the rocker panel 3 extending in the vehicle front-rear direction is spot welded to the flange portions 8b. This Rockinna 10
Has a hat-shaped cross section, and flanges 10a and 10b are integrally formed on the upper and lower edges of the hat. Further, flange portions are formed on both side edges of the rear floor 9.
The inner surface of the rocker rear inner 11 of the rocker panel 3 is joined to the flange portion 9b by spot welding. This Roccaria Inner 11
Is formed in a hat-shaped cross section similar to the rocker inner 10, and the flange portion 11 is formed on the upper and lower edges of the rear inner 11.
a and 11b are integrally formed. Furthermore, the rocker outer 1 and the rocker outer 1 are provided outside the rocker inner 10 and the rock rear inner 11.
2 are provided, and upper and lower edge flange portions 12a and 12b integrally formed on the upper and lower edges of the rocker outer 12 and the upper and lower edge flange portions 10a and 12a of the rocker inner 10 and the rocker inner 11 respectively. 11a, 10b and 11b are joined by spot welding, whereby the rocker panel 3 is formed in a box shape with a closed cross section.

Further, the rear end portion 10c of the rocker inner 10 is stepped and formed outside the vehicle, and the front end portion 11c of the rocker rear inner 11 is superposed on the inner side surface of the vehicle at the stepped portion.
As a result, the inner surfaces of the inner bodies 10 and 11 are flush with each other.

A notch 14 is formed in the lower corner of the front end of the rocker rear inner 11, and a rear edge 14a of the notch 14 is stepped down to the outside of the vehicle. Also,
At the lower portion of the rear end 10c of the rocker inner 10 is the edge 14a.
The protruding portion 16 is integrally formed so as to overlap the inside of the vehicle. As a result, the rear end portion 10c of the rocker inner 10 has an upper portion positioned outside the front end portion 11c of the rocker rear inner portion 11 on the vehicle outer side, and a lower protruding portion 16 inverted to be positioned on the vehicle inner side.

 Next, the function and effect of this embodiment will be described.

An assembling process for forming the underbody by joining the floor panel 2 and the rocker panel 3 of this embodiment will be described.

First, in the sub-assembly process, the left and right rocker rear inners 11 are spot-welded to the left and right flange portions 9b of the rear floor 9 in advance to manufacture the rear floor assembly, and the left and right flange portions 8b of the front floor 8 are left-sided. The front floor assembly is manufactured by spot welding the Rocker Inner 10 on the right. Then, in the underbody assembly process of the next process, inside the rear end portion 10c of the left and right rocker inners 10,
The rear floor assembly is placed on the front floor assembly from above so that the front ends 11c of the left and right rocker rear inner 11 are located. Then, the rear end portion 10c of the above Rocker Inner 10
Is located on the vehicle outer side of the front end portion 11c of the rocker rear inner 11, and the projecting portion 16 is located on the vehicle inner side of the edge portion 14a of the rocker rear inner 11 with its positional relationship reversed.
Will be fitted. Then, the overlapping portions are joined by spot welding.

As described above, according to the present embodiment, the rock rear inner located inside the vehicle, that is, so as to wrap the mating panel.
The cutout 14 is formed in the lower part of 11, and the protrusion 16 overlapping the edge 14a of the cutout 14 is formed in the lower part of the rocker inner 10, so when the rocker rear inner 11 is overlapped with the rocker inner 10, The rear inner 11 can be fitted from above. As a result, the front and rear portions of the floor can be made into sub-assemblies, and the process of assembling the underbody can be automated. As a result, productivity can be improved as compared with the conventional case where the assembly is performed manually.

In the above embodiment, the case where the front end of the rocker inner is joined to the rear end of the rocker inner has been described as an example, but the present invention is not limited to this case. For example, it can be applied to the joining of rail inner panels of roof side rails connected to both edges of the roof panel, and also to the joining of lower back. Any structure having such a structure can be adopted.

〔The invention's effect〕

As described above, according to the vehicle body panel joining structure of the present invention, the notch is formed in the lower portion of the curved outer panel,
When the inner panel is formed with a protrusion, and when both of the panels are stacked in the vertical direction, the protrusions of the inner panel are inverted so that they are located outside the outer panel. It is possible to combine them, and for example, the process of assembling the underbody can be automated, and the productivity can be improved.

[Brief description of drawings]

1 to 5 are views for explaining a joint structure of an underbody according to an embodiment of the present invention. FIG. 1 is an exploded perspective view showing a state in which a rocker inner is fitted to a rocker inner, Figure 2 is its side view and Figure 3 (a) is the second.
IIIa-IIIa line sectional drawing of a figure, FIG.3 (b) is II of FIG.
Sectional view taken along line Ib-IIIb, FIG. 4 is a sectional view taken along line IV-IV of FIG. 2, FIG. 5 is a side view showing an automobile adopting the structure of this embodiment, and FIG. 6 is a conventional joint structure. FIG. 7 is a side view showing the exploded perspective view for explaining FIG. In the figure, 10 is a rocker inner (inner panel), 10c is a rear end portion, 11 is a rocker rear inner (outer panel), 11c is a front end portion, 14 is a notch portion, 14a is an edge portion, and 16 is a protruding portion.

Claims (1)

(57) [Claims] 1. A joint structure for a vehicle body panel, wherein an end portion of a curved outer panel and an end portion of an inner panel which is curved so as to be capable of fitting with the panel are overlapped and joined so that the outer panel wraps the inner panel. In the above, a cutout portion is formed in a lower portion of the joint end portion of the outer panel, a protrusion portion that overlaps an edge portion of the cutout portion is formed in a lower portion of the inner panel, and the both panels are stacked in a vertical direction. At this time, the joint structure of the vehicle body panel is characterized in that the above-mentioned protruding portion of the inner panel is arranged so as to be inverted and positioned outside the above-mentioned edge portion of the outer panel.