JPS59227533A - Reinforcing metal device structure in rear parcel for automobile - Google Patents

Abstract

PURPOSE:To utilize a hollow inner part so effectively and aim at improvements in both of strength and rigidity, by securing a profile sectional-form auxiliary reinforcing metal device to tight to the hollow inner part of a reinforcing metal device body. CONSTITUTION:A reinforcing metal device 10 is constituted of a flat plate part 11 and a trapezoidal part 12 made up of welding each of peripheral flange parts 12a and 12a of the flat plate part 11 to its lower surface by means of spot welding 14. And, inside the hollow inner part of a hollow rail-form reinforcing metal device body, the backside is welded to the lower surface of the flat plate part 11 by means of spot welding 14 likewise in the above case, while a section U-shaped auxiliary reinforcing detal device 13 forming a pair of leg pieces 13a being contacted to an inner side angular part of the trapezoidal part 12 is installed. In the case where the specified load is added to the top of a rear parcel 20, the force that tries to bend the reinforcing metal device body is further added but the leg piece 13a of the auxiliary reinforcing metal device 13 hits the angular part opposed to the trapezoidal part, which force blaces this force trying to bend the device body. With this constitution, drag against the load grows large to a great extent.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to an improvement in the reinforcing metal structure of an automobile rear parcel.

(Prior art and its problems) A hatchback type passenger car has a space serving as a luggage compartment between the rear seat seat 1- and the back door, and a rear parcel is installed in this luggage compartment. The luggage compartment is divided into upper and lower halves.

In the rear parcel of such a hatchback type passenger car, the load from the luggage installed on the top surface is extremely large, and for this reason, reinforcing metal fittings are integrated into the back surface of the board material that makes up the rear parcel. ing.

Figure 1 shows the basic structure of the reinforcing metal fitting 1.
This reinforcing metal fitting 1 is a hollow rail-shaped piece consisting of a flat plate part 2 attached to the board material side, and a trapezoidal part 3 whose peripheral edge 3a is spot-welded 4 to the lower surface of the flat plate part 2. This is attached to the flat plate portion 2 side along the vehicle width direction of the board material, and constitutes a beam for supporting the load applied to the rear parcel.

In addition, as shown in FIG. 2, there is also a device in which a convex portion 3b is provided protruding from the bottom of the trapezoidal portion 3, thereby reinforcing the shape.

However, such reinforcing metal fittings in the shape of trapezoidal hollow rails do not necessarily satisfy the specified rigidity, and when a large load is applied, they cannot withstand the load.
Shortcomings such as the possibility of bending were pointed out.

Possible countermeasures to this problem include increasing the thickness of each material, forming the -C into a larger shape than the conventional one, or providing multiple pieces. However, with the former type of structure, improvements in strength and rigidity cannot be expected despite the increased weight.
Furthermore, processing becomes extremely difficult.

In addition, it has been pointed out that the latter method has drawbacks, such as an increase in weight as with the former method, and a loss of appearance when the rear perch is folded to the back side.

(Objective of the Invention) An object of the present invention is to minimize the increase in weight without changing the basic shape of the reinforcing metal fitting as described above, and to obtain a reinforcing metal fitting that has sufficient rigidity.

(Structure and Effects of the Invention) In order to achieve the above object, the present invention provides a reinforcing metal fitting that is attached to the back side of a board material constituting a rear parcel along its width direction. A hollow rail-shaped reinforcing fitting body is constructed of a flat plate part attached to the board material side, a channel material whose peripheral edge is spot welded to this flat plate part, and a reinforcing fitting body fixed to the hollow inside of this reinforcing fitting body. It is characterized by comprising a secondary reinforcing metal fitting with an irregular cross-sectional shape.

According to the above configuration, without changing the basic shape of the conventional trapezoidal hollow rail-shaped reinforcing metal fitting itself, the hollow interior can be effectively utilized and the strength and rigidity can be further improved.

(Description of Embodiments) Embodiments of the present invention will be described below with reference to FIG. 3 and the following drawings.

3 to 5 show a first embodiment of the present invention.

In each figure, the reinforcing metal fitting 1o according to the present invention includes a flat plate part 11 and a peripheral flange part 1 on the lower surface of the flat plate part 11.
2a, 12a are spot welded 14 into the hollow interior of the hollow rail-shaped reinforcing metal body constituted by the trapezoidal part 12, and the back surface thereof is spot welded 14 to the lower surface of the flat plate part 11 in the same manner as described above. A sub-reinforcing metal fitting 13 having a cross-section shape and having a pair of leg pieces 13a abutting on the inner corner of the trapezoidal portion 12 is arranged.

The reinforcing metal fittings 10 integrated in this way are attached to the lower surface of the board material constituting the rear parcel.

Figures 6 and 7 show how it is installed.

In this example, a polypropylene composite resin board is used as the material of the board material 15, and a covering sheet 16 made of the same material as the board material 15 is used on the lower surface of the reinforcing metal fitting 10 as a fixing means. The board material 15 and the covering sheet 16 are heated to near their melting points, and in that state, the sheet t is placed in a cold press mold.
-16.

The reinforcing metal fittings 10 and the board material are installed in this order, and then a decorative skin such as a carpet 17 is installed on the upper surface of the board material 15, and then the reinforcing metal fittings 10 are placed around the outer periphery of the covering sheet 16 by being pressurized. The reinforcing metal fittings 10 are integrated in a state in which the reinforcing metal fittings 10 are encapsulated, and the peripheral edge of the covering sheet 16 is integrated with the board material 15 by heat fusion, thereby completing the integrated rear parcel 20.

When a predetermined load is applied to the upper surface of the rear parcel 20 configured as described above, a force is applied to bend the reinforcing metal fitting main body, but the leg pieces of the secondary reinforcing metal fittings 13 are bent into trapezoidal parts. The bending force comes into contact with the opposite corners of the bending line, and counteracts the bending force.As a result, the resistance to the load becomes extremely large.

Moreover, although the board material 15 and the covering sheet 16 shrink during molding, the reinforcing metal fittings 10 have sufficient rigidity, so that thermal deformation of the rear parcel 20 does not occur.

Next, FIG. 8 shows a second embodiment of the present invention.

Incidentally, the same parts as in the above embodiment are marked with the same symbols and the explanation thereof will be omitted.

=6= In the reinforcing metal fitting 30 shown in J-3 () in this embodiment, a sub-reinforcing metal fitting 31 having a V-shaped cross section is arranged inside the reinforcing metal fitting main body, and the apex of the V-shape is welded to the flat plate part 11 to the spora 1. 147I, the lower surface thereof is brought into contact with the corner portion of the trapezoidal portion 12, thereby counteracting the force that tends to bend the reinforcing metal fitting main body.

Next, what is shown in FIG. 9 shows the dimensions of a third embodiment of the present invention, and this reinforcing metal fitting 40 has a sub-reinforcing metal fitting 41 having a substantially U-shaped cross section installed in the hollow interior of the reinforcing metal fitting main body. The top part of the U-shape is welded to the flat plate part 11 by the spora 1, and both edges are brought into opposing contact with the corner parts of the trapezoid part 12.

Next, FIG. 10 shows a fourth embodiment of the present invention.

The reinforcing fitting 50 in the figure has a hollow pipe-shaped sub-reinforcing member 51 with a diameter that exactly fits in the space surrounded by the trapezoidal part 12 and the flat plate part 11, and the top part of the sub-reinforcing member 51 is placed against the flat plate part 11. Spora 1 ~ Welding.

In addition, in each example, the portion of the sub-reinforcing material that can come into contact with the reinforcing metal fittings is 1°Q mm to 1.5 mm, taking into account the dimensional tolerance of both.
A clearance of mm may be provided.

Although each embodiment has been explained above, the shape of the sub-reinforcing material is not necessarily limited to each embodiment, and the main point is that
Any shape is applicable as long as one end is joined to the upper or lower surface of the hollow interior of the reinforcing metal body and the other end is extended to the opposing surface.

[Brief explanation of the drawing]

Figures 1 and 2 are cross-sectional views showing the structure of conventional reinforcing metal fittings;
3 is an exploded perspective view of the reinforcing metal fitting according to the first embodiment of the present invention, FIG. 4 is a perspective view showing the assembled state, FIG. 5 is a sectional view taken along the line v-V in FIG. Fig. 7 is an explanatory diagram showing the case where the reinforcing metal fittings are assembled into the rear parcel, Fig. 8
The figure is a sectional view of a reinforcing metal fitting according to a second embodiment of the present invention.
FIG. 9 is a sectional view of a reinforcing metal fitting according to a third embodiment of the invention, and FIG. 10 is a sectional view of a reinforcing metal fitting according to a fourth embodiment of the invention. 10.30. /1.0.50...Reinforcement fittings 11...
...... Flat plate part 12 ...... Trapezoidal part (channel moon) 15
......Board material 20...Rear parcel 13.31, 41.51...Sub-reinforcing material Patent applicant Nissan Motor Co., Ltd. Aigasai Kogyo Co., Ltd. = 9 - Figure 1 Figure 2 Figure 8 Figure 9 Figure 3 Figure 6 Figure 5 6 +4) (II I; 41 de/), 4

Claims (1)

[Claims] (1) In a reinforcing metal fitting installed along the width direction on the back side of a board material constituting a rear parcel, the reinforcing metal fitting has a flat plate part attached to the board material side, and a peripheral edge of the flat plate part. A rear reinforcing metal fitting for an automobile comprising: a hollow rail-shaped reinforcing fitting body made up of a channel material spot-welded to Made of Purcell reinforcement metal fittings.