JPS5970262A - Car body coupling structure - Google Patents

Abstract

PURPOSE:To improve the supporting rigidity of a coupling panel along with the improvement in the durability of a side body by allowing the weld surface of a sill outer to the coupling panel to projection into a shape where said weld surface makes surface control with the bend part of the coupling panel. CONSTITUTION:A projection part 15 is provided on a portion where a front pillar outer 4 acting as a coupling panel on the upper surface of a sill outer 12 is welded. This projection part 15 is provided with the weld surface 14 making contact with a bent part 7 provided on a front pillar outer 4' acting as the coupling panel welded to said projection part 15. For the assembling of the front pillar outer 4' to the sill outer 12, the weld surface 14 and the end part 7' of the bent part 7 making contact with said weld surface are piled up to permit spot welding to be performed. Accordingly, it is possible to couple the sill outer 12 with the front pillar outer 4' without providing a welding end part 8 as shown in the drawing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure in which a sill outer of a vehicle body is welded to a panel to be joined to the sill outer, such as a front pillar outer, a center pillar, a rear pillar, etc.

First, the structure of the side body of the vehicle centering on the sill outer will be outlined according to Figures 1 and 2.

The side body is a structural member that forms the side surface of the passenger compartment, and has the role of suppressing deformation in the event of a capsize and ensuring strength. It plays a role in place of the frame in a lightweight body, and is installed horizontally on the side in the front-rear direction.

As shown in FIG. 2, this side sill consists of a sill outer 2 that forms the upper, outer, and lower surfaces of the side sill 1, and a sill inner 3 that forms the inner surface. It is spot welded and is formed to be smoothly continuous with the sill outer. As shown in Fig. 1, these joint panels include the front pillar outer 4, the center pillar 5, the rear villa 6, etc., and among the joint parts A, B, C, and D, the joint with the front pillar outer 4 Regarding part A, shown in FIG. 2, in order to ensure the rigidity near the joint and the joint rigidity, a welded end 8 is extended through the curved part 7, and the welded end 8 is overlapped on the upper surface of the sill outer 2. They are joined by spot welding.

In other words, to describe the structure of this joint in more detail, as shown in FIG. The welded end 8 has a length L, and the welded end 8 is overlapped with the welded surface 9 provided on the upper surface of the sill outer 2, and this overlapping part is welded by spot welding. It is connected to the upper surface of the sill outer 2 so as to be smoothly continuous.

By the way, when manufacturing goods, reducing the amount of materials used is one way to reduce costs, and for automobiles in particular, it is the ultimate means from the point of view of energy conservation and reducing the weight of the vehicle. be able to. This also applies to the side body described above, and it is preferable if there is a means to reduce the amount of material used in the side body. However, as mentioned above, the side body has the role of ensuring the strength of the car body, so it is not possible to easily reduce the amount of material used. Therefore, it is possible to reduce the amount of material used without reducing the strength of the side body. The appearance of a side body structure was expected.

The present invention has been made in response to such expectations, and includes raising the welded portion of the sill outer into a shape that faces the curved portion of the joining panel, and welding this raised portion to the curved portion of the joining panel. Therefore, it is an object of the present invention to provide a vehicle body coupling structure that allows the end portion extending through the curved portion to be removed, and further improves the rigidity without reducing it.

The following will explain the embodiment shown in FIGS. 3(b) and 4.

In FIG. 4, 12 is a sill outer, and its upper surface 13
A raised portion 15 is provided at a portion where the front pillar outer 4' serving as a coupling panel is welded. As shown in FIG. 3(b), this raised portion 15 is
The welding surface 1 faces the curved portion 7 (having the same curvature R as the conventional front pillar outer 4) provided on the front pillar outer 4' as a joining panel welded to the front pillar outer 4'.
4.

In this embodiment having the above configuration, when assembling the front pillar outer 4' to the sill outer 12, the welding surface 14 and the end 7' of the curved part 7 facing this are overlapped and spot welded at the core part. and weld it. As a result, the sill outer 2 and the front pillar outer 4' are joined together at the welding surface 14 of the raised portion 15 and the end 7' of the curved portion 7, and the front pillar outer 4' is joined to the sill outer 12. Therefore, the sill outer 12 and the front pillar outer 4' can be joined without providing the stiffer welded end 8 shown in FIG. 3(a) and without welding at the welded end 8. .

As explained above, the present invention provides a welding section between a sill outer and a joining panel which is welded by overlapping an end portion extending through a curved portion on the welding surface of the sill outer. Since the sill outer is raised in a shape that faces the curved part of the joining panel, the raised welding surface of the sill outer and the curved part of the joining panel are brought into contact with each other, and welding is performed at the facing part. , the sill outer and the joining panel can be joined, thus the conventional end (welded end 8 having length L in FIG. 3(a))
There is no need to form the end portions when forming the joint panel, and it is possible to reduce the amount of materials and costs, and also to reduce the weight of the vehicle body.

Furthermore, as shown in Figure 3 (C), the curved portion of the bonded panel where stress occurs is backed by the raised portion of the sill outer, so the support rigidity of the bonded panel at the core is improved, and the side It is also possible to improve the durability and strength of the body.

In the above embodiment, only the front pillar outer was illustrated and explained, but the center pillar 5. shown in FIG. The respective joint portions B, C, and D of the rear pillar 6 also have the same structure and produce the same effect.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of a side body, Fig. 2 is a perspective view showing a joint between a sill outer and a front pillar outer, Fig. 3(a) is a sectional view taken along the line A-A in Fig. 2, and Fig. 3 is a perspective view showing an example of a side body. (to)
FIG. 4 is a sectional view taken along line A--A in FIG. 2 of an embodiment of the present invention, and FIG. 4 is a perspective view showing an embodiment of the present invention. 1...Zydosil, 2.12・1 sill outer, 4'Φ
・e front pillar outer (joint panel), 5...Q
Center pillar (joint panel), 6... Rear pillar (
(joint panel), 7... curved part, J, 4... welding surface,
15... Protuberance. 347 Figure 3 Figure 4

Claims (1)

[Claims] (1) In a vehicle body joining structure in which a joining panel in which a curved portion is formed on a sill outer is overlapped and welded to the sill outer in a smooth continuous manner, the welding surface of the sill outer to the joining panel is connected to the curved portion of the joining panel. A vehicle body connection structure characterized by a raised shape that meets the body.