JPH1053162A - Panel structure of car body rear part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the panel structure of the rear part of a car body formed such that rigidity of the car body of an automobile is increased. SOLUTION: A quarter inner panel 3 has a curve part 6 formed at a corner part ranging from the side of the back door opening 2 of a car body to a lower part, and the end part 3a of the quarter inner panel is extended through the curve part 6 to the central side of the car body. A tail end member 4 is disposed between right and left quarter inner panels 3. The rear part of a floor panel 8 has a recessed part 8c in a down state is formed in the portion, corresponding to a position below a weld (c) between the quarter inner panel 3 and the tail end member 4, of the floor panel 8. The recessed part 8c is formed in a shape that a spot weld gun is rotatable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear panel structure for improving the rigidity of an automobile body.

[0002]

2. Description of the Related Art An automobile 21 shown in FIG. 5 has a back door opening 22 at a rear portion of a vehicle body as seen in a one-box car or a two-box car. 3 shows a joining portion between the quarter inner panel 23 and the tail end member 24. FIG.
Is an enlarged view of the joint. The quarter inner panel 23 is disposed on the rear side of the vehicle body, and a tail end member 24 is welded between them at a welded portion a of spot welding. Also, as shown in FIG.
Are also welded between the left and right quarter inner panels 23 along the side panels of the vehicle body at a number of welds b.

[0003] As shown in FIG.
The reason why the curved portion 22 a is provided on the lower side portion is to avoid interference with the tail lamp 27. On the other hand, as shown in FIG. 8, it is necessary to secure a space for the spot gun 26 around the welded portion a of the quarter inner panel 23 and the tail end member 24. This space is secured by the curved portion 22a. ing. On the other hand, as shown in FIG. 9, near the center of the lower portion of the back door opening 22, the tail end member 24 is provided to increase the back door opening area of the luggage compartment.
The height h between the floor panel 25 and the lower surface of the tail end member 24 is reduced, and the space for the spot gun 26 cannot be secured.

[0004]

As shown in FIG. 7, when the mounting structure of each panel is viewed from the rear part of the vehicle body, the welded portion a of the quarter inner panel 23 and the tail end member 24, and the quarter inner panel 23 The space between the floor panel 25 and the welded portion b is small. Therefore, FIG.
As shown in (1), when some force P is applied to the vehicle body, the rigidity of the vehicle body is small. For example, the rigidity of the vehicle body increases as the welded portion is separated from the center of the vehicle body as at point C.
Also, since the joint between the quarter inner panel 23 and the tail end member 24 is provided in the curved portion 22a of the opening 22, when the quarter inner panel 23 and the tail end member 24 are press-formed, both need to be drawn. Met. For this reason, their shapes are difficult to mold, and there is a disadvantage in production due to the yield of materials and processing costs.

The present invention has been made in view of the above problems, and has as its object to provide a rear panel structure of a vehicle body in which the rigidity of the vehicle body is increased without making welding work difficult.

[0006]

According to the present invention, a tail end member and a floor panel are welded between left and right quarter inner panels, and a back door opening is formed between the quarter inner panel and the tail end member. In the panel structure at the rear of the vehicle body having a curved portion for avoiding interference with the tail lamp on both sides of the lower portion of the opening, an end of the quarter inner panel on the side joined to the tail end member is formed. , Which is extended to the center side beyond the curved portion and welded to the tail end member, and the gap between the welded portion of the quarter inner panel and the tail end member and the welded portion of the quarter inner panel and the floor panel is separated. It is characterized by.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a rear panel structure of a vehicle body according to an embodiment of the present invention.

1 and 2 show a rear panel structure 1 of a vehicle body according to the present invention. FIG. 1 is a view as seen from the interior side of an automobile, and FIG. 2 is a view as seen from behind the automobile. It is. At the rear of the car, a quarter inner panel 3 and a tail end member 4 forming part of the back door opening 2
And are arranged. The quarter inner panel 3 is disposed from the side to the rear of the vehicle, and is mounted inside the quarter outer panel 5 as shown in FIG.

As shown in FIG. 1, the quarter inner panel 3 is provided with a curved portion 6 at a corner extending from a side portion to a lower portion of the back door opening 2 of the vehicle body. The central side is extended. The upper surface of the end 3a of the quarter inner panel 3 faces substantially horizontally. Although the quarter inner panel 3 is described only on the right side of the vehicle body, the structure of the quarter inner panel and the like provided on the left side of the vehicle body is also line-symmetric,
The left and right sides have the same structure.

The tail end member 4 is formed by bending a flat plate and is disposed between the left and right quarter inner panels 3 and fixed on the back panel 7 shown in FIG. The upper end 4 a of the tail end member 4 forms a lower portion of the back door opening 2, and forms a substantially horizontal plane continuously from the cut of the curved portion 6. As shown in FIG. 3, the joint between the quarter inner panel 3 and the tail end member 4 is bent into the same shape so that the end of the quarter inner panel 3 and the end of the tail end member 4 can be overlapped. The end of the tail end member 4 is superimposed on the end of the inner panel 3 and spot welding is performed with a spot welding gun 9.

The floor panel 8 is disposed between the left and right quarter inner panels 3 and, as shown in FIG. 2, an L-shaped bent side end 8a is welded to the quarter inner panel 3 surface by welding. I have. The rear end 8b of the floor panel 8 bent into an L-shape is connected to the back panel 7 as shown in FIG.
Welded to the surface. The rear portion of the floor panel 8 has a concave portion 8c formed by bending the floor panel 8 downward at a position corresponding to the welded portion c of the quarter inner panel 3 and the tail end member 4. The size and shape of the recess 8c are not particularly limited as long as the spot gun 9 can be routed.

The configuration of the panel structure 1 at the rear of the vehicle body according to the embodiment of the present invention has been described above. Next, the operation and effects will be described.

As shown in FIG. 2, in the present embodiment, the quarter inner panel 3 extends beyond the curved portion 6 of the back door opening 2, so that the weld c between the quarter inner panel 3 and the tail end member 4 is formed. , And is located closer to the center of the vehicle body than the curved portion 6. Conventionally, as shown in FIG. 7, the welded portions a are provided on the curved portion. Therefore, in the present embodiment, quarter inner panel 3 and floor panel 8
The distance between the welded portion b of the quarter inner panel 3 and the welded portion c of the tail end member 4 is longer than in the prior art. As a result, the force P shown in FIG.
However, when applied to the vehicle body, the rigidity of the rear portion of the vehicle body increases.

Further, the conventional tail end member 24 has a curved portion on the tail end member 24 side as shown by a chain line d in FIG. 4, and as described above, drawing requires drawing. In the present embodiment, since the shape of the tail end member 4 is linear or almost linear, it can be press-formed only by bending, so that the cost of the mold can be reduced, and the production is advantageous in terms of yield, processing cost, and the like. become.

As shown in FIG. 1, the welded portion c of the quarter inner panel 3 and the tail end member 4 is disposed closer to the center of the vehicle than the curved portion 6 is. Accordingly, conventionally, as shown in FIG. 9, the distance h between the lower surface of the tail end member 24 and the floor panel 25 is small, and the spot gun cannot be disposed there. In the present embodiment, as shown in FIG. 3, a recess 8c is formed in a portion corresponding to the floor panel 8 below the welded portion c of the quarter inner panel 3 and the tail end member 4. With the space of the concave portion 8c, the spot gun 9 which is usually used can be provided and arranged.

Although the embodiments of the present invention have been described above, the present invention is, of course, not limited thereto, and various modifications can be made based on the technical concept of the present invention.

[0017]

As described above, according to the present invention, the distance between the welded portion of the quarter inner panel and the floor panel and the distance between the welded portion of the quarter inner panel and the tail end member are increased. Rigidity increases.
In addition, since the shape of the tail end member is linear or almost linear, it can be press-formed only by bending, reducing the part to be drawn as the whole vehicle body,
Mold cost can be saved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a panel structure at a rear portion of a vehicle body according to an embodiment of the present invention, as viewed from the indoor side.

FIG. 2 is a rear view of the rear panel structure of the vehicle body as viewed from the rear of the vehicle.

FIG. 3 is a sectional view taken along the line ZZ in FIG. 1;

FIG. 4 is a rear view showing the shape of the tail end member according to the embodiment of the present invention.

FIG. 5 is a perspective view of an automobile employing a conventional rear panel structure of a vehicle body.

FIG. 6 is a perspective view showing a panel structure of a rear portion of the vehicle body.

FIG. 7 is a rear view of the rear panel structure of the vehicle body as viewed from the rear of the vehicle.

8 is a sectional view taken along line XX in FIG.

FIG. 9 is a sectional view taken along line YY in FIG. 6;

FIG. 10 is a rear view showing a gap between a welded portion between the quarter inner panel and the floor panel and a welded portion between the quarter inner panel and the tail end member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Panel structure at the rear of vehicle body 2 Back door opening 3 Quarter inner panel 4 Tail end member 6 Curved section 8 Floor panel 8c Recess

Claims (2)

[Claims] 1. A tail end member and a floor panel are welded between left and right quarter inner panels, a part of a back door opening is formed by the quarter inner panel and the tail end member, and tail lamps are provided on both sides below the opening. In the panel structure of the rear part of the vehicle body provided with a curved portion for avoiding interference with the tail end member, the end of the quarter inner panel, which is joined to the tail end member, is extended to the center side beyond the curved portion to extend the tail end. A rear panel structure of a vehicle body, which is formed by welding to members, and a gap is provided between a welded portion of the quarter inner panel and the tail end member and a welded portion of the quarter inner panel and the floor panel. 2. The vehicle body rear part according to claim 1, wherein a concave portion for disposing a spot welding gun is provided in a portion of the floor panel corresponding to a position below the welded portion between the quarter inner panel and the tail end member. Panel structure.