JPH0453349Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention provides a truck loading platform peripheral wall comprising an outer panel constituting the outer wall of the loading platform peripheral wall, an inner panel constituting the inner wall on the cargo loading space side, and a reinforcing top rail. Regarding structure.

Prior Art The carrier surrounding wall structure of the above type has a double wall structure consisting of an inner panel and an outer panel, and therefore has the advantage that loaded cargo can be more reliably protected than a single wall surrounding wall structure. However, in this type of conventional peripheral wall structure, in order to integrally fix the inner panel to the outer panel and top rail,
It has the disadvantage that it requires a large number of parts and also requires a lot of labor and time during its manufacture.

Furthermore, as shown in Japanese Utility Model Publication No. 57-51570, the top rail and the outer panel are fixed together, and a gap is formed between these members.
A truck bed surrounding wall structure in which the upper end of the inner panel is inserted has also been proposed, but with this structure, the inner panel is simply inserted into the gap, so the connection strength is reduced. Moreover, since the upper end of the inserted inner panel may rub against the outer panel and the top rail, causing abnormal noise, it is necessary to insert the upper end of the inner panel into the gap via the protector member. However, if such members are used, the number of parts increases accordingly, which inevitably leads to problems that increase costs and reduce assembly workability.

Purpose The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks, and to provide a truck bed surrounding wall structure with a small number of parts, excellent productivity, and high strength.

Configuration In order to achieve the above object, the present invention includes an outer panel that constitutes the outer wall of the peripheral wall of the loading platform, an inner panel that constitutes the inner wall on the cargo loading space side, and a reinforcing top rail. It has a hanging part that hangs down from the end on the cargo loading space side of the top part, and a recessed part that is recessed toward the outside of the vehicle is formed in the hanging part, and the upper part of the outer panel is attached to the outside surface of the recessed part. The two are overlapped and welded, the hanging part has an extension extending downward from the recess, the upper part of the inner panel is overlapped with the extension, and the two are welded, and the upper end of the inner panel The present invention proposes a truck loading platform peripheral wall structure in which the wall is bent toward the outside of the vehicle so as to enter the recess, and a sealer is applied to the edge of the upper end.

Examples Examples of the present invention will be described below with reference to the drawings.
In addition, the drawbacks of the conventional technology will be clarified in more detail with reference to the drawings.

FIG. 1 shows an example of a truck equipped with a loading platform peripheral wall structure according to the present invention, where 1 indicates a cab and 2 indicates a loading platform behind the cab. Cargo platform 2 is cargo 4
(see Figure 2), and a peripheral wall 5 of the loading platform 2. The peripheral wall 5 includes a fixed wall 6 immovably fixed to the floor board 3, and a tailgate 7 pivoted at the rear. It consists of

As is clear from FIG. 2, which is a cross-sectional view taken along the line -2 in FIG. and a top rail 11 for reinforcing these panels 8 and 10, and the top rail 11 has a substantially horizontal apex 12;
An end 13 of this top portion 12 on the cargo loading space 9 side
It has a drooping part 14 that hangs downward from the base.

Further, a plurality of rope hooks 15 arranged at appropriate intervals are fixed to the lower surface of the top rail 11, and ropes 16 shown by chain lines in FIG.
It is possible to secure the cargo loaded on the

The outer panel 8, the inner panel 10, and the top rail 11 are integrally assembled and fixed by welding, but before clarifying the details, an example of a related conventional configuration will be explained.

As shown in FIG. 3, the conventional peripheral wall 5a also has an outer panel 8a, an inner panel 10a, and a top rail 11a. In order to assemble and fix these, first, a plurality of intermediate connecting members are attached to the hanging portion 14a of the top rail 11a. 20a are arranged at appropriate intervals and are spot welded to the top rail 11a as schematically indicated by the first X mark 21a. Next, the hanging portion 14a and the outer panel 8a are fixed together by spot welding, as shown by the second X mark 22a. A screw grommet 23a made of synthetic resin is attached to the intermediate connecting member 20a.

Next, the inner panel 10a, which has been previously formed into a predetermined shape, is arranged as shown in FIG.
Screw a into the grommet 23a and attach the inner panel 1.
0a is fixed to the intermediate connecting member 20a.

In this way, the two panels 8a, 10a and the top rail 11a are assembled together, but in order to attach the inner panel 10a, a plurality of intermediate connecting members 20a, screw grommets 23a and screws 24a are required. The number of parts increases. Moreover, it also has the drawback that the installation work requires a lot of effort and time.

In addition, since the inner panel 10a is attached via the synthetic resin screw grommet 23a, it is not possible to paint the loading platform after installing the inner panel, and the loading platform including the outer panel 8a and top rail 11a must be painted before installing the inner panel 10a and the grommet 23a. Inner panel 1 painted separately
0a must be assembled to the top rail 11a. If the inner panel is painted in a separate process in this way, the work becomes very complicated.

Therefore, as shown in FIG.
It is also conceivable to assemble the three parts into one by overlapping the upper parts of both the outer panel 8a and the lower end of the hanging part 14a of the top rail 11a and spot welding them together. In this way, there is no need for intermediate connecting members, grommets, or screws, making it possible to reduce the number of parts and improve productivity.

However, when three plates are welded together in this way, the weld strength is reduced. Therefore, increasing the overall strength requires spot welding at a large number of points, which reduces productivity.

Each panel 8a, 10a and top rail 11a
However, when a steel plate whose surface has been subjected to anti-corrosion treatment by galvanizing is used, the welding strength in particular decreases, and it is often difficult to weld to a desired level of strength.

Although not shown in the drawings, a loading platform surrounding wall structure has also been proposed in which the upper end of the inner panel is inserted into the gap formed between the top rail and the outer panel, which are integrally fixed to each other. As described above, the strength was reduced, and since a protector member was required, the number of parts increased.

Therefore, in the configuration according to the present invention, as illustrated in FIG.
The upper part of the outer panel 8 is overlaid on the outer side surface of the outer panel 8, and the overlapping portion is spot welded at an appropriate interval in the direction perpendicular to FIG. 2 as shown by reference numeral 22. Since the two plates of the top rail 11 and the outer panel 8 are spot-welded in this manner, the welding strength can be sufficiently increased and a decrease in strength can be prevented.

Further, the hanging part 14 of the top rail 11 has an extension part 25 that extends further downward than the above-mentioned recess 30, that is, the weld part 22, and the upper part of the inner panel 10 is overlapped with this extension part 25, and this overlap part is As shown by reference numeral 21, they are spot welded at appropriate intervals. In this case as well, since the two plates are welded, their strength is increased, and as a result, the top rail 11, outer panel 8, and inner panel 10 are firmly fixed with a predetermined strength.

In this case, the intermediate connecting member, screw grommet, and screw shown in FIG. 3 are unnecessary, and the protector member is also unnecessary. Moreover, since the loading platform can be painted after the inner panel 10 is welded, the work can be simplified. During actual assembly work, for example, if the top rail 11 and the inner panel 10 are first spot welded, and then the outer panel 8 and the top rail 11 are spot welded, these can be welded without any problem.

Note that even after painting the edges of the sheet metal, the coating becomes thin and rust is likely to occur, so the upper edges 26 of the inner panel 10 and the outer panel 8,
Sealers 28 and 29 are applied to the edges of 27. This is the same in the conventional structures shown in FIGS. 3 and 4, with sealers 28a and 29, respectively.
a is applied.

In this case, in the conventional structure, the cargo 4a loaded on the carrier is moved in the left and right direction A while the truck is running.
When it shifts, it hits the sealer 28a,
There was a risk that the sealer 28a would be damaged and its antirust function would be reduced.

In order to deal with such a problem, in the configuration shown in FIG. 2, a recess 30 is formed in the hanging portion 14 of the top rail 11, and the upper end 26 of the inner panel 10 is recessed toward the outside of the vehicle. The upper end portion 26 is bent toward the outside of the vehicle so as to enter inside the upper end portion 30, and a sealer 28 is applied to the edge of the upper end portion 26. Therefore, even if the baggage 4 shifts in the left-right direction A, the baggage can be prevented from hitting the sealer 28, and damage to the sealer 28 can be prevented.

Although the structure of the fixing wall 6 of the cargo platform peripheral wall 5 has been described above, it goes without saying that the present invention can be applied to the tailgate 7 in exactly the same manner.

In addition, an extension part 2 is attached to the hanging part 14 of the top rail 11.
By providing 5, the following secondary advantages can also be obtained.

That is, as described above, the rope 1 is attached to the rope hook 15.
6 to secure the load, a force is applied to the hook 15 in the direction shown by arrow B in FIGS. A moment in the direction of arrow C is applied around the nearby portion. In addition, in the case of the tailgate 7, when it is opened to a nearly horizontal state and a person or cargo is placed on it, an external force in the direction of arrow D acts on the top rail from above. Top rail 11,1
A moment in the opposite direction to arrow C acts on 1a.

At this time, when the length of the hanging portion 14a is short as in the top rail shown in FIGS. 3 and 4, the moment acting on the top rail 11 causes the inner panel 10 corresponding to the root region to
a and the outer panel 8a or the intermediate connecting member 20a
A large stress is generated in the portion 31a, and cracks occur there over time. Also, cracking of the sealer occurs.

However, when the top rail 11 is provided with the extension 25 as in the configuration shown in FIG. 2, the center of the moment acting on the top rail 11 is in the large area of the extension 25, and stress due to the moment is generated in this portion 25. . Therefore, cracks can be prevented from occurring in both panels 8 and 10, and since the top rail 11 is normally thicker than the inner panel and the outer panel, cracks do not occur in the top rail itself.

Effects According to the loading platform surrounding wall structure according to the present invention, it is possible to reduce the number of parts and improve productivity with a simple configuration. Furthermore, since the inner panel is fixed to the top rail by welding, its strength can be increased. Moreover, since the outer panel and the top rail are welded together, and the inner panel and the top rail are welded, the welding strength of each can be reliably increased. In addition, a recess is formed in the hanging part of the top rail, so
Its rigidity can be increased, and since the bent upper end of the inner panel fits into this recess and a sealer is applied to the edge, even if the cargo loaded on the cargo bed moves, It is also possible to prevent problems such as damage to the sealer.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a truck equipped with a cargo bed surrounding wall structure according to the present invention, FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1, and FIGS. It is a sectional view similar to the figure. 2... Loading platform, 5... Loading platform peripheral wall, 8... Outer panel, 9... Loading space, 10... Inner panel, 11... Top rail, 12... Top,
13... End part, 14... Drooping part, 25... Extension part, 26... Upper end part, 28... Sealer, 30...
recess.

Claims (1)

[Scope of utility model registration request] an outer panel constituting an outer wall of the loading platform peripheral wall;
It is equipped with an inner panel constituting an inner wall on the side of the luggage loading space, and a top rail for reinforcement, and the top rail has a hanging part that hangs downward from the end of the top part on the side of the luggage loading space, and the hanging part A recessed portion recessed toward the outside of the vehicle is formed in the recessed portion, and the upper part of the outer panel is overlapped with the outer side surface of the recessed portion and the two are welded, and the hanging portion has an extension portion extending downward from the recessed portion. and the upper part of the inner panel is overlapped with this extension part and both are welded,
and a truck cargo bed surrounding wall structure, wherein the upper end of the inner panel is bent toward the outside of the vehicle so as to fit into the recess, and a sealer is applied to the edge of the upper end.