JPH10278848A - Car body rear part structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve strength of a part of a lower back panel supporting a hook in good appearance and easily mold this lower back panel in simple structure. SOLUTION: A lower back panel 8 is furnished with an inner panel 18 and an outer panel 19. A reinforcing plate 31 is provided in the neighbourhood of a hook 28 supported by the lower back panel 8 and between the panels 18, 19. An upper end edge 34 of this reinforcing plate 31 is positioned between both upper end edges 22, 23 of the aforementioned both panels 18, 19 and connected to each of the upper end edges 22, 23 of the both panels 18, 19. A part of the neighbourhood of the upper end edge 34 on the reinforcing plate 31 is made a longitudinally directed part 37 extended in the vertical direction. An upper surface of the upper end edge 23 of the outer panel 19 is connected to a lower surface of the upper end edge 34 of the reinforcing plate 31, and a front surface of a part in the neighbourhood of the upper end edge 23 on the outer panel 19 is connected to a back surface of the longitudinally directed part 37 of the reinforcing plate 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body rear structure in which a lower back panel supports a towing hook.

[0002]

2. Description of the Related Art Generally, a motor vehicle is provided with a lower back panel which constitutes a rear portion of the vehicle body and extends in the vehicle width direction. The lower back panel includes an inner panel and an outer panel which face each other in the front-rear direction. The side cross-section of the panel is box-shaped (for example, actual open flat 1-150153).
No.).

[0003] In the above configuration, a tow hook is supported on a part of the lower back panel in the longitudinal direction, and a towed body of another automobile or the like can be towed to the hook via a wire or the like. ing.

[0004]

By the way, in the above-mentioned prior art, when an object is pulled by a hook, a large external force is applied to a portion of the lower back panel supporting the hook. The strength may be insufficient.

Therefore, it is conceivable to attach a reinforcing plate to a portion of the lower back panel supporting the hook. However, if it is simply provided, the reinforcing plate can be easily seen in appearance, and the appearance of the rear portion of the vehicle body is deteriorated. There is a possibility that.

On the other hand, the lower back panel is formed by connecting the inner panel and the outer panel to each other, but the positioning operation of the two panels at the time of this forming is not easy. Is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. When a towing hook is supported on a lower back panel, the strength of a portion of the lower back panel supporting the hook is provided. It is an object to improve the appearance of the lower back panel and to easily form the lower back panel with a simple configuration.

[0008]

A vehicle body rear structure according to the present invention for solving the above-mentioned problems includes an inner panel 18 and an outer panel 19 in which a lower back panel 8 extending in the vehicle width direction faces in the front-rear direction. At the same time, the side cross sections of the panels 18 and 19 are box-shaped, and the upper edges 22 and 23 of the panels 18 and 19 both project rearward, and the upper edges 22 and 23 are vertically aligned. When the tow hook 28 is supported by the lower back panel 8,

In the vicinity of the hook 28, both panels 1
8 and 19, a reinforcing plate 31 is provided.
Upper edge 34 of both panels 18 and 19
The lower edge 35 of the reinforcing plate 31 is attached to at least one of the panels 18 and 19 while being connected between the upper edges 22 and 23 of the panels 18 and 19 between the panels 2 and 23. Combined

A portion in the vicinity of the upper edge 34 of the reinforcing plate 31 is a vertically extending portion 37 extending vertically, and the lower surface of the upper edge 34 of the reinforcing plate 31 is
The upper surface of the upper end edge 23 of the outer panel 19 is joined to the rear surface of the vertically oriented portion 37 of the reinforcing plate 31.

[0011]

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

In FIG. 2, reference numeral 1 denotes a two-box type vehicle, and a vehicle body 2 of the vehicle 1 is supported on a traveling road surface 4 by front and rear wheels 3. Also, the arrow Fr
Indicates the front of the vehicle 1, and the left and right described below refer to the vehicle width direction toward the front.

1 to 6, the vehicle body 2 is made of sheet metal and has a pair of left and right side frames 6, 6 at the lower portion thereof. Each of the side frames 6 extends long in the front-rear direction. The intermediate portions in the front-rear direction at the rear portions of the left and right side frames 6, 6 are connected to each other by a cross member 7 extending in the vehicle width direction (the connection is made by welding of spots or arcs and / or fastening. The same applies hereinafter). And). The rear end portions of the left and right side frames 6, 6 are connected to each other by a lower back panel 8 extending in the vehicle width direction. A floor panel 9 is laid so as to straddle the upper surfaces of the side frames 6, the cross member 7, and the lower back panel 8. The upper part of the floor panel 9 inside the vehicle body 2 is a vehicle compartment 10.

On the rear surface of the vehicle body 2, a back door device 13 is provided.
Is provided. The vehicle body 2 has a pair of left and right rear pillars 14 extending in the vertical direction at a rear end thereof, and lower ends of the rear pillars 14 are coupled to respective side ends of the lower back panel 8. A space above the lower back panel 8 between the two rear pillars 14 is a door opening 15 constituting the back door device 13, and the vehicle interior 10 communicates with the outside of the rear of the vehicle body 2 through the door opening 15. Have been allowed. Further, the back door device 13 includes:
A back door 16 capable of opening and closing the door opening 15;
And a bumper 17 attached to the outer surface of the lower end of the back door 16.

1, 3 and 4, the lower back panel 8 includes an inner panel 18 and an outer panel 19 facing each other in the front-rear direction. The side sections of these panels 18 and 19 are substantially rectangular box shapes. I have. The inner panel 18 is connected to the inner panel upper 1 connected to each other.
8a and an inner panel lower 18b.

The middle portions 20 and 21 in the vertical direction of the panels 18 and 19 respectively extend substantially vertically and face each other with a slight distance back and forth. Both panels 18, 19
The upper end edges 22 and 23 of the intermediate portions 20 and 21 respectively
The upper ends 22 and 23 face each other in the up-down direction. Also,
The lower edges 24 and 25 of the panels 18 and 19 extend integrally from the lower ends of the intermediate portions 20 and 21, respectively, and face each other below the intermediate portion 20 of the inner panel 18 in the front-rear direction.

At the center of the vehicle body 2 in the vehicle width direction, a sheet metal bracket 27 is firmly supported by spot welding over the cross member 7, the lower back panel 8, and the floor panel 9. A towing hook 2 which is a towing body straddling the bracket 27 and the lower back panel 8.
8 are firmly supported by arc welding or spot welding. More specifically, at the center of the vehicle body 2 in the vehicle width direction, the rear portion of the hook 28 is located between the front surface of the lower back panel 8 and the rear surface of the bracket 27 connected to the lower back panel 8. The front portion of the hook 28 is connected to the bracket 27. A towed body such as another automobile can be towed by the hook 28 via a wire 29 or the like.

1, 3-6, a reinforcing plate 31 made of sheet metal is provided near the hook 28 and between the panels 18 and 19. An intermediate portion 32 in the vertical direction of the reinforcing plate 31 is surface-joined to the intermediate portion 20 of the inner panel 18 and joined by spot welding. The reinforcing plate 31 has an extending portion 33 integrally extending from the upper end edge of the halfway portion 32 toward the rear upper direction. The extending end of the extending portion 33 is the upper edge 34 of the reinforcing plate 31, and the upper edge 34 is located between the upper edge 22 of the inner panel 18 and the upper edge 23 of the outer panel 19, These upper edges 22 and 23 are joined by spot welding.

On the other hand, the lower edge 35 of the reinforcing plate 31 is located between the lower edge 24 of the inner panel 18 and the lower edge 25 of the outer panel 19.
4, 25 are connected by spot welding. Note that the lower edge 35 of the reinforcing plate 31 may be connected to only one of the inner panel 18 and the outer panel 19.

According to the above configuration, the strength of the portion of the lower back panel 8 supporting the hook 28 is equal to the strength of the reinforcing plate 31.
In addition, since the reinforcing plate 31 is located between the panels 18 and 19,
The reinforcing plate 31 is prevented from being seen in appearance.

1 and 6, the portion of the reinforcing plate 31 near its upper edge 34, more specifically, the rear end of the extending portion 33 of the reinforcing plate 31 is substantially vertically The longitudinal portion 37 extends.

As described above, the upper surface of the upper edge 23 of the outer panel 19 is joined to the lower surface of the upper edge 34 of the reinforcing plate 31 connected to the inner panel 18 by spot welding, and the reinforcing plate 31 is also welded. 31 vertical part 3
The front surface of the portion near the upper edge 23 of the outer panel 19 (the upper end portion of the middle portion 21 of the outer panel 19) is joined to the rear surface of the outer panel 7 by spot welding.

A circular opening 38 is formed in the extension 33 of the reinforcing plate 31. By inserting a welding gun through the opening 38, spot welding of the rear end of the floor panel 9 to the upper surface of the inner panel 18 is enabled.

Since the opening 38 is provided as described above, it is not necessary to overlap the extended portion 33 of the reinforcing plate 31 on the upper part of the inner panel 18 and the floor panel 9 and to perform spot welding, and therefore, it is possible to freely form. The degree is improved, and the reinforcing plate 31 can be lightened. In the case of electrodeposition coating, the electrodeposition liquid can be easily supplied to each part through the opening 38, and can be easily discharged after the supply. The effect is improved.

3, 7 to 9, the lower end of each of the rear pillars 14 is constituted by an extension panel 41 connected to the upper end of the inner panel 18 at the side end of the lower back panel 8. A part of the extension panel 41 is bent downward to form a positioning part 42.

At the side edge of the lower back panel 8, the upper surface of the upper edge 23 of the outer panel 19 is joined to the lower surface of the upper edge 22 of the inner panel 18 by spot welding. On the back,
The front surface of the upper end of the middle portion 21 of the outer panel 19 is joined.

A procedure for forming the rear portion of the vehicle body 2 having the above structure will be described. The following connection is performed by spot welding or arc welding.

As shown in FIGS. 1, 3, 4, and 7 to 9, the reinforcing plate 3 is first attached to the inner panel 18 of the lower back panel 8.
At the same time, the first panel (18, 31, 41) is formed by connecting the inner panel 18 and the extension panel 41 of each rear pillar 14. Next, the cross members 7 are attached to the side frames 6 and 6, respectively.
To form the second combined body (6, 7). Also,
The third combined body (27, 28) is formed by combining the bracket 27 and the hook 28. Furthermore, each of the rear pillars 1
4 and the first combined body (18, 31, 4)
1) to form a fourth conjugate (14, 18, 31, 4)
1) is molded.

Next, the second to fourth combined bodies are combined with each other to form a fifth combined body. Next, the floor panel 9 is joined to each upper surface of the fifth joined body. In this connection, the opening 38 is used as described above.

Next, as shown in phantom lines in FIGS. 1 and 7 to 9 and in FIG. 6, the outer panel 19 is provided behind the first combination (18, 31, 41) constituting the fifth combination. And the outer panel 19 is moved forward as indicated by the arrow A from here.

As shown by solid lines in FIGS.
In the center of the outer panel 19, the upper surface of the upper edge 23 of the outer panel 19 is joined to the lower surface of the upper edge 34 of the reinforcing plate 31, and the upper front surface of the middle portion 21 of the outer panel 19 is joined to the rear surface of the vertical portion 37, And the outer panel 19
Is joined to the rear surface of the lower edge 35 of the reinforcing plate 31.

As shown by solid lines in FIGS. 7 to 9, the upper edge 2 of the outer panel 19 is
3 is joined to the lower surface of the upper edge 22 of the inner panel 18, the upper front surface of the middle portion 21 of the outer panel 19 is joined to the rear surface of the positioning portion 42, and the front surface of the lower edge 25 of the outer panel 19 is joined to the lower surface. It is joined to the rear surface of the lower edge 24 of the inner panel 18.

Then, the outer panel 19 can be accurately and easily positioned with respect to the fifth combined body.

Then, when these members are joined to each other by spot welding at the respective joints of the outer panel 19 to the fifth joint, the rear portion of the vehicle body 2 is formed.

[0035]

According to the present invention, the lower back panel extending in the vehicle width direction is provided with the inner panel and the outer panel facing each other in the front-rear direction, and the side cross sections of both panels are box-shaped. In the vehicle body rear structure in which each upper edge protrudes rearward and both upper edges face in the vertical direction, while the tow hook is supported by the lower back panel,

In the vicinity of the hook, a reinforcing plate is provided between the panels, and the upper edge of the reinforcing plate is located between the upper edges of the panels and is connected to the upper edges of the panels. On the other hand, the lower end edge of the reinforcing plate is connected to at least one of the panels.

Therefore, the strength of the portion of the lower back panel supporting the hook is improved by the reinforcing plate, and the reinforcing plate is located between the two panels. The appearance of the reinforcing plate in appearance is prevented.

Accordingly, the strength of the portion of the lower back panel that supports the hook can be improved with good appearance.

A portion of the reinforcing plate in the vicinity of its upper edge is a vertically extending portion extending vertically, and the upper surface of the upper edge of the outer panel is joined to the lower surface of the upper edge of the reinforcing plate. The front surface of a portion near the upper edge of the outer panel is joined to the rear surface of the vertical portion of the plate, and has the following effects.

That is, when forming the lower back panel, first, a reinforcing plate is connected to the inner panel. Next, in order to couple the outer panel to the combined body of the inner panel and the reinforcing plate, and to position these combined bodies and the outer panel with each other, the lower surface of the upper edge of the reinforcing plate is attached to the lower surface of the upper edge of the outer panel. The upper surface is joined, and a portion near the upper edge of the outer panel is joined to the rear surface of the vertically oriented portion of the reinforcing plate. Then, since the combined body and the outer panel can be positioned with respect to each other, after setting this state, the outer panel may be combined with the combined body by spot welding or the like.

Therefore, since the positioning at the time of molding the lower back panel is achieved by simply joining the outer panel to the reinforcing plate, the positioning operation can be performed with a simple structure by using the reinforcing plate. Easily,
That is, the lower back panel can be easily formed with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line 1-1 of FIG.

FIG. 2 is an overall side view of the automobile.

FIG. 3 is a partial simplified view taken along line 3-3 in FIG. 2;

FIG. 4 is a partially enlarged view of FIG. 3;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 1;

FIG. 6 is an exploded perspective view of an outer panel of a lower back panel and a reinforcing plate.

FIG. 7 is a partially enlarged view of FIG. 3;

FIG. 8 is a sectional view taken along line 8-8 of FIG. 7;

FIG. 9 is a perspective view of what is shown in FIGS.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automobile 2 Body 6 Side frame 7 Cross member 8 Lower back panel 9 Floor panel 10 Chamber 18 Inner panel 19 Outer panel 22, 23 Upper edge 28 Hook 31 Reinforcement plate 34 Upper edge 35 Lower edge 37 Vertical portion

Claims (1)

[Claims] 1. A lower back panel extending in a vehicle width direction includes an inner panel and an outer panel facing each other in a front-rear direction, and both panels have a box-shaped side cross section,
Both upper edges of these panels project rearward, and both upper edges face each other in the up-down direction. On the other hand, in the vehicle body rear structure in which a tow hook is supported by the lower back panel, A reinforcing plate is provided between the two panels, and an upper edge of the reinforcing plate is located between the upper edges of the two panels and is coupled to the upper edges of the two panels. A lower edge of the plate is coupled to at least one of the panels, and a portion near the upper edge of the reinforcing plate is a vertically extending portion extending in a vertical direction. An automobile body in which an upper surface of an upper edge of the outer panel is joined and a front surface of a portion near the upper edge of the outer panel is joined to a rear surface of a vertical portion of the reinforcing plate. Part structure.