JPH065964Y2 - Rear structure of the car body - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a rear structure of a vehicle body, and more particularly to a rear structure of a vehicle body having a luggage compartment.

[Prior art]

The rear part of the vehicle body of an automobile having a trunk room generally has a vehicle body structure as shown in FIG. 5, and the floor of the trunk room is formed by the rear floor pan a that constitutes the rear part of the underbody, and the rear floor pan a
A lower back outer panel b forming a rear wall of the trunk is joined to the rear edge of the rear wall in a standing wall shape. A lower back inner panel c is joined to the inner surface of the upper end portion of the lower back outer panel b, and the lower back inner panel c and the lower back outer panel d form a sill portion d having a box cross section at the trailing edge of the trunk room opening. ing. Further, in order to increase the rigidity of the trunk room or the rear part of the vehicle body, the rear surface of the lower end of the lower back outer panel b is generally a channel-shaped cross member panel which cooperates with the lower back outer panel b to form a box-shaped cross section. e is joined.

[Problems to be solved by the device]

By the way, it is necessary for the vehicle body to have sufficient rigidity in order to prevent squeak noise during vibration and deformation of the vehicle body opening, and the vehicle body rigidity also greatly affects the strength of the vehicle body. It is an important factor for the affected car. Even in the vehicle body rear portion as described above, sufficient rigidity is still required, and the cross member panel e is provided for this purpose. However, even if the cross member panel e is provided, the rigidity of the rear portion of the vehicle body is not sufficient, and there is a strong tendency that the rigidity of the central portion in the vehicle width direction becomes insufficient. In most cases, the transport hooks provided at the rear of the vehicle body are not located at the center position in the vehicle width direction at the rear of the vehicle, but near the side edges where the joints of various panels at the rear of the vehicle are gathered and the rigidity is relatively increased. It can be understood from the fact that it is installed. This is because the transport hook is for hooking the fixed wire to fix the vehicle when transporting the vehicle by shipping, etc., but this is only one if it can be installed in the central position, When the mounting point is removed from the central position, it must be provided at two points so that the balance will not be lost when the vehicle is fixed by hooking the fixed wire to the transport hook. In this way, despite the fact that two transport hooks must be provided, the attachment point is removed from the center position because the rigidity against the tensile load that extends from the fixed wire to the vehicle body via the transport hook is This is because it is not sufficient near the center. In addition, as a generally considered method for increasing the rigidity of the vehicle body, a method of newly adding a reinforcement panel can be considered, which increases the rigidity near the center of the rear part of the vehicle body and You can solve the problem that the mounting position of various transport hooks is limited. However, with such a method, the number of parts increases, and the increase in the number of parts causes problems such as complication of the vehicle body structure and cost increase. The present invention has been devised under the above circumstances, and provides a rear structure of a vehicle body configured to increase the rigidity of the vehicle body without increasing the number of parts. Its purpose.

[Means for solving the problem]

In order to solve the above problems, the present invention takes the following technical means. That is, at the rear edge of the rear floor pan that forms the floor of the luggage compartment, there is provided a lower back panel that is joined like a standing wall and has an upper end that forms a threshold at the trailing edge of the luggage compartment opening. In a rear structure of a vehicle body, in which a box member having a box cross section is formed by joining a substantially channel-shaped cross member panel to an outer surface of a lower end portion, a rear floor pan is recessed in a front portion of the lower back panel. In addition, a tire well whose rear side wall is located at a predetermined distance in front of the standing wall portion of the lower back panel is provided, and the lower back panel is bent from the lower end portion of the standing wall portion. An extension portion extending forward is provided, and an end edge of the extension portion is joined to a rear surface of the rear side wall to form the lower back panel. A reinforcing box frame portion having a box cross-section and extending in the vehicle width direction formed by the vertical wall portion or the extension portion and the rear floor pan is a box frame portion formed by the lower back panel and the cross member panel. It is characterized in that it is provided so as to overlap with the front and back.

[Action and effect]

Conventionally, the lower back panel is only joined to the rear floor pan in a standing wall shape so as to form the rear side wall of the luggage compartment, and these two panels do not form a special vehicle body reinforcing structure. There wasn't. In the present invention, the basic structure of the rear part of the vehicle body is effectively used to form a double front and rear box cross-section structure to remarkably increase the strength of the rear part of the vehicle body. That is, first, a substantially channel-shaped cross member panel is joined to the outer surface of the lower end portion of the lower back panel to form a box-shaped box-shaped frame section extending in the vehicle width direction. Next, the rear side wall of the tire well and the standing wall portion of the lower back panel or the extending portion extending forward from the lower end thereof form a reinforcing box frame portion having a box cross section extending in the vehicle width direction. Moreover, both of the box frame portions are provided so as to be overlapped with each other in the front-rear direction via the lower back panel, and the reinforcing effect thereof is excellent. As a result, when such a reinforcing box frame part is formed in the center part in the vehicle width direction, the transport hook can be attached to the center part, which was difficult in the past. You only need one. Further, the reinforcing box frame portion formed between the lower back panel and the rear floor pan is formed without providing a new member, and moreover, a tire well normally provided as a storage compartment for spare tires in the trunk room. The rear side wall is effectively used as a constituent element of the reinforcing box frame part, and the formation of the tire well also serves as the formation of the reinforcing box frame part. Therefore, there is almost no increase in the number of manufacturing steps when the reinforcing box frame portion is provided in such a portion. As described above, according to the present invention, the rigidity of the rear portion of the vehicle body can be significantly increased without significantly increasing the number of parts and the number of manufacturing steps.

[Explanation of Examples]

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. As shown in FIG. 2, a lower back outer panel 2 is joined to a rear wall portion of a rear floor pan 1 forming a floor of a luggage compartment in a standing wall shape. The lower back outer panel 2 and the lower back inner panel 3 coupled to the inner surface of the upper end of the lower back outer panel 2 form a sill 4 having a box cross-section at the trailing edge of the trunk room opening.
Further, the lower back outer panel 2 is joined to the lower back outer panel 2 and a substantially channel-shaped cross member panel 6 forming a box frame 5 having a box cross section, whereby the rigidity of the rear part of the vehicle body is increased. Up is planned. In addition, in the case of this example, both end edges of the lower back outer panel 2 are respectively connected to the rear edges of the left and right quarter panels 7, 7 and the rear extension panels 8, 8 respectively.
Both ends of the lower back inner panel 3 are joined to the left and right luggage opening reinforcing panels 9, 9, respectively. Now, as shown in FIGS. 1 and 2, the lower back outer panel 2 is provided at the center of the rear floor pan 1.
A tire well 1a for accommodating a spare tire is provided in a front portion of the rear side wall 1b of the lower back outer panel 2 at a predetermined distance from the standing wall portion 2a of the lower back outer panel 2. . On the other hand, the lower back outer panel 2 is provided with an extending portion 2b that is bent from the lower end of the standing wall portion 2a and extends forward. Then, the rear floor pan 1 is joined by joining the end edge of the extending portion 2b to the rear surface of the rear side wall 1b extending in the vehicle width direction.
A reinforcing box frame portion 10 having a box cross-section and extending in the vehicle width direction is formed in the rear portion. As a result, as a reinforcement body of the lower back outer panel, the box frame portion 5 formed by the cross member panel 6 and the reinforcement box frame portion 10 are formed on the front and rear sides thereof so as to overlap with each other. When such a box-shaped reinforcing box frame portion 10 is provided, the forces acting on the rear floor pan 1 and the lower back outer panel 2 constituting the reinforcing box frame portion 10 are shared by these panels 1 and 2. Therefore, the rigidity of both the panels 1 and 2 is increased, and at the same time, the rigidity of the rear portion of the vehicle body, particularly, the portion where the reinforcing box frame portion 10 is provided is significantly increased. Further, in this example, as shown in FIGS. 1 and 2, the reinforcing box frame portion 10 and the box frame portion 5 formed by the cross member panel 6 and the lower back outer panel 2 are arranged in front and rear directions. The reinforcing box frame portion 10 is formed so as to overlap in the direction.
Therefore, the box frame portions 10 and 11 synergistically contribute to increasing the rigidity of the rear portion of the vehicle body. Further, in this example, as shown in FIG. 2 and FIG.
On both sides of the lower back outer panel 2 where the extending portion 2b is not provided, an edge is joined to the lower surface of the rear floor pan 1, and a box frame portion continuous with the reinforcing box frame portion 10 is referred to as the rear floor pan 1. Second extension 2 formed in cooperation
c are provided respectively. And each of these second extension parts 2
c, 2c and the rear floor pan 1, the ends of the respective box frame portions are formed by the rear floor pan 1 and the left and right side members 12, 12 joined to the lower surface thereof and extending in the front-rear direction. It is designed to continue to the rear end of the section. That is, since each of the box frame portions having the box cross section is configured to form a gate structure in a plan view, it is possible to exhibit extremely high rigidity with respect to a front-back direction load acting on the rear portion of the vehicle body. become. Further, since the tensile rigidity of the rear side wall 1b or its peripheral portion is sufficiently enhanced by the formation of the reinforcing box frame portion 10, as shown in FIG. The rear side wall 1b or bottom wall 1a can be used as a mounting seat for the transport hook bracket 11. Further, the mounting position of the transport hook 13 can also be set at the center position in the vehicle width direction on the rear side wall 1b or the rear part of the vehicle body.
Therefore, in the vehicle body structure of this example, it is not necessary to provide two transport hooks as in the conventional case. Although the illustrated transport hook 13 is of a type having a substantially U-shape when viewed from the rear, the tire well can be used when mounting the type of transport hook that has a substantially U-shape when viewed from the side in the vehicle width direction. It goes without saying that the rear side wall 1b or the bottom wall of the la 1a can be utilized as its mounting seat. Also, when mounting the transport hook 13,
If the transport hook bracket 11 or the transport hook itself is joined to the edge of the extension 2b, the supporting rigidity of the transport hook 13 can be further increased. By the way, the scope of the present invention is not limited to the above-described embodiment, but in the case of the above-mentioned embodiment, the extension portion is formed on the lower back outer panel side. It is also possible to provide an extending portion on the back inner panel side. Further, the present invention can be widely applied to any vehicle in which a trunk room is formed, and a vehicle of a type in which an underbody is configured as a single body and a rear portion thereof forms a rear floor pan, and a rear floor. The invention can be applied without problems to any type of vehicle in which the pan is connected to the rear of the center pan to form an underbody.

[Brief description of drawings]

1 is a sectional view taken along the line I--I of FIG. 2, FIG. 2 is a perspective view of a vehicle body structure according to an embodiment of the present invention seen from the front, and FIG.
FIG. 3 is a sectional view taken along line III-III in FIG. 4, FIG. 4 is a sectional view showing a state in which a transport hook is attached, and FIG. 5 is a sectional view showing a conventional vehicle body rear structure. 1 ... rear floor pan, 1a ... tire well, 1b ...
... rear side wall, 2 ... lower back panel (lower back outer panel), 2a ... standing wall part, 2b ... extension part, 4 ...
… Sill part, 10 …… Reinforcement box frame part.

Claims (1)

[Scope of utility model registration request] 1. A lower back panel, which is joined to a rear wall of a rear floor pan forming a floor of a luggage compartment in a standing wall shape, and whose upper end forms a sill portion at the trailing edge of the luggage compartment opening, and the lower panel. In a rear structure of a vehicle body, which is formed by joining a substantially channel-shaped cross member panel to the outer surface of the lower end of the back panel to form a box frame having a box cross section, the rear floor pan and the rear floor at the front of the lower back panel. The tire well is formed by recessing the pan, and the rear side wall is located at a predetermined distance in front of the standing wall portion of the lower back panel, and at the lower back panel, the lower end portion of the standing wall portion is formed. The lower back panel is provided with an extending portion that is bent from and extends forward, and an end edge of the extending portion is joined to a rear surface of the rear side wall. A reinforcing box frame portion having a box cross section and extending in the vehicle width direction formed by the standing wall portion or the extension portion and the rear floor pan is a box frame portion formed by the lower back panel and the cross member panel. The rear structure of the vehicle body, which is provided so as to overlap with the front and rear.