JPH0321381B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a coupling device for a vehicle underframe and a side structure, and particularly for a vehicle body with a long skirt, the manufacturing cost is low, the finished appearance is good, and The present invention relates to a coupling device for a vehicle underframe and a side structure that provides a coupling structure that is effective in terms of vehicle body strength.

[Conventional technology]

The car body of a railway vehicle is assembled into an integral structure, and particularly the connection portion between the underframe and the side structure requires strong connection. Traditionally, to assemble a car body,
As shown in FIG. 12, the lower part of the side pillar 3 on the side structure side is directly welded to the upper surface of the side beam 2 of the underframe 1, and
The inner surface of the outer plate 4 was directly welded to the outer surface of the side beam 2 to connect it.

However, as shown in FIG.
When assembling a car body with a long skirt 5, the side pillars 3 of the side structure are welded only to the upper surface of the upper flange 2a of the side beam 2, and the side pillars 3 are separated at the side beam 2, resulting in a complicated structure. Therefore, there were problems in that joining was difficult and the strength was insufficient. Further, the welded portions of the upper surfaces of the flanges 2a on the side columns 3 and side beams 2 required dimensional adjustment and alignment to account for deformation such as shrinkage during welding, which was troublesome work.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a coupling device for a vehicle underframe and a side structure, which makes it possible to easily couple the underframe and side pillars, and also to provide a strong bond even to a vehicle body with a long skirt. Our goal is to provide the following.

[Means for solving problems]

In order to achieve the above object, the present invention arranges a side beam so as to intersect with the flange side surface of a side column formed by having flanges protruding outward from both ends of a structural member,
A connecting member is interposed at the joint between the side beam and the side column, and this connecting member is connected to a structural member that fits into the structure of the side column in a nested manner, and a structural member that extends outward from both ends of the side column. and a flange that is integrally bent at one end of the structural member and abuts on the upper surface of the side beam.

[Embodiments of the invention]

An embodiment of the vehicle underframe and column coupling device according to the present invention will be described below with reference to FIGS. 1 to 11, in which the same parts as in FIGS.
This will be explained with reference to the figures.

FIG. 3 shows the entire car body. A side beam 2 forming an underframe for supporting the car body is provided at the bottom of the car body, and a side beam 2 forming a side structure 10 is connected to the side beam 2. The lower parts of the two are joined together to form a monolithic body. The side pillar 3 is, as shown in FIG.
The cross-sectional shape is approximately Ω-shaped, flanges 3a, 3a are formed on both sides of the opening structure, and the opening of the structure is erected so as to face inward of the vehicle body. A vehicle body outer plate 4 is spot-welded to the outer surface of the side pillar 3 to form a side structure 10 as a whole. The coupling member 6 for coupling the side structure 10 to the side beam 2 is
As shown in FIGS. 5 and 6, the cross-sectional shape is almost the same as that of the side column 3, but the dimensions are slightly smaller, and the side column 3
It is designed to be telescopically fitted inside the structure. In addition, side flanges 6a are provided at both end edges of the opening structure.
6a, and an upper flange 6b extending in a direction orthogonal to the side flange 6a is formed at the upper end of the coupling member 6a. It is desirable that the coupling member 6 be manufactured integrally by press working. The upper flange 6b of the coupling member 6 may be formed into a flat plate shape as shown in FIG. It may also be manufactured by pressing into a curved shape.

8 and 9 show a state in which the coupling member 6 is welded to the side structure 10 described above. A state in which the peaks of the coupling member 6 fit into the inside of the side column 3, that is, the side flange 6a of the coupling member overlaps the flange 3a of the side column 3, and the upper flange 6b of the coupling member protrudes inward. In this state, the connecting members 6 are individually welded to the side columns 3. The welding method may be spot welding or hole welding as shown in FIG. 10, or fillet welding as shown in FIG. 11. In order to attach the side structure 10 with the coupling members joined to the underframe 1, follow the steps shown in FIGS. 1 and 2.
As shown in the figure, the upper flange 6b of the connecting member is placed on the upper flange 2a of the side beam 2 of the underframe 1, aligned, and joined by hole welding. In addition, the connecting member 6
The side flange 6a of the side beam 2 and the web 2b of the side beam 2 are aligned and abutted, and hole welding is performed from the inside of the web 2b to the side flange 6a of the coupling member. moreover,
The lower end of the lunge 6a and the lower end of the web 2b of the side beam are joined by fillet welding V, thereby completing the work of joining the underframe and the side column.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the side column and the underframe are joined via a connecting member manufactured by press molding so as to fit into the interior of the side column. It is possible to assemble the side structure as a complete side structure including the binding material into each unit, and the side structure and underframe can be assembled after the side unit and underframe unit have been assembled. This is extremely easy, and the side structure and the underframe can be connected sufficiently firmly. Furthermore, since the coupling member having a horizontal surface and a vertical surface is interposed,
There is no need for mutual rubbing during assembly, and it is sufficient to simply place the side structures with connecting members on the underframe, which prevents distortion and maintains a beautiful appearance. The joint between the underframe and the side structure is reinforced by the joint member itself,
Furthermore, since the side pillars are not divided into upper and lower parts by the side beams, sufficient strength of the vehicle body can be obtained, which is particularly suitable when the outer plate extends below the underframe, and the member configuration is simplified.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the vehicle underframe and column coupling device according to the present invention, Fig. 2 is a view taken along the line A-A in Fig. 1, and Fig. 3 shows the entire vehicle body. 4 is a cross-sectional view of the side structure, FIG. 5 is a perspective view showing the coupling member, FIG. 6 is a cross-sectional view taken along line B-B in FIG. 5, and FIG. 7 is a cross-sectional view of the side structure. FIG. 8 is a perspective view showing another embodiment of the coupling member, FIG. 8 is a side view showing the state in which the coupling member is joined to the side structure, and FIG. 9 is C of FIG. 8.
-C line arrow view, Figure 10 is a cross-sectional view taken along the D-D line in Figure 9, showing the welding state, and Figure 11 is a cross-sectional view similar to Figure 10 showing another welding state. side view,
FIG. 12 is a side view showing a state in which the underframe and pillar of a conventional vehicle are coupled together, and FIG. 13 is a side view showing a conventional coupling device between an outer panel with a long skirt and the underframe. 1...Underframe, 2...Side beam, 3...Side pillar, 5...
Skirt, 6... Connection member, 6a, 6b... Flange, 10... Side structure.

Claims (1)

[Scope of Claims] 1. A side beam is arranged so as to intersect with the flange side surface of a side column having flanges protruding outward from both ends of a channel member, and a connecting portion between the side beam and the side column. A connecting member is interposed between the grooves, and the connecting member includes a groove member that fits into the groove of the side post in a nested manner, a side flange that extends outward from both ends of the groove member and comes into contact with a flange of the side post, and a groove. A coupling device for connecting an underframe and a side structure of a vehicle, comprising a flange that is integrally bent at one end of a section and abuts on the upper surface of the side beam. 2. The outer surface of the coupling member and the inner surface of the side column are coupled to each other, and the upper surface of the coupling member and the upper surface of the underframe are coupled by hole welding. A coupling device for a vehicle underframe and a side structure according to item 1.