JPH0129754B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rear body structure for a two-door automobile, and more particularly to a rear body structure for a two-door automobile in which a center pillar and a side sill are connected by a closed cross-section structure.

As an example of the conventional rear body structure of the above-mentioned two-door automobile, as described in Japanese Patent Publication No. 51-2164, the center pillar has a closed section structure, and both an inner panel and a rear fender are provided. something is known.

In this conventional rear vehicle body structure, since the bracket is joined below the center pillar and spans both the inner panel and the outer panel, a new bracket is required, resulting in an increase in the number of parts. Furthermore, since the closed cross section of the center pillar portion is not continuous with the portion between the inner panel and the rear fender, there is also the problem that the rigidity of the vehicle body is poor.

The object of the present invention is to provide a rear body structure for a two-door automobile that solves the above-mentioned conventional problems. In a two-door vehicle with a door attached, there is a door holder step that extends vertically at the front part of the rear fender panel and is the trailing edge of the door opening, and faces the front of the vehicle and the outside of the vehicle. The pillar front panel part is formed of a door panel receiving step part, and the pillar front panel part and a door receiving inner panel disposed on the indoor side form a closed cross-sectional structure extending in the vertical direction. The front end of the receiving inner panel is joined to a flange provided at the front end of the door receiving step, the rear end is joined to the inner surface of the door panel receiving step, and the upper part of the closed section structure is It is connected continuously to the center pillar cross section, and its lower part is connected to the side sill.

By configuring the present invention in this way, the strength of the center pillar is increased. As a result, the connection between the side sill and the roof reinforcement part becomes strong, and there is no need to strengthen the connection between the side sill and the roof reinforcement part by providing a bracket across the inner panel and the outer panel as in the past. Therefore, the inner panel and bracket can be omitted. Eliminating the need for the above inner panel not only simplifies the structure, reduces the number of parts, and reduces the weight of the vehicle body, but also allows the thick part of the side wall between the conventional inner panel and outer panel to be used as a vehicle interior. It can be effectively used by configuring it and providing a pocket or armrest made of synthetic resin here.

Further, the area of the closed cross section can be made larger by subtracting the thickness of the rear end of the door from the thickness of the side wall of the vehicle body, which is advantageous in terms of structural mechanics. Furthermore, the present invention not only has the many structural advantages mentioned above, but also forms a closed cross-section structure by joining the door receiver inner panel to the back surface of the area hidden by the side door of the door panel receiver step. The joint between the pillar front panel and the door receiver inner panel is completely hidden from view from outside the vehicle when the side door is closed, which is also aesthetically pleasing.

Embodiments of the present invention will be described below based on the drawings. In the first embodiment, the area around the center pillar on the left side of the vehicle body is composed of a roof panel 2, a center pillar 4, a rear fender panel 6, a side sill 8, etc., as shown in FIG. A window opening 13 is provided. The rear fender panel 6 has, at the rear edge of the door opening 12, a door receptacle step 14 that is integral with the rear fender panel 6 and faces toward the front of the vehicle body, and a door panel receptacle step facing toward the outside of the vehicle body. The pillar front panel section 3 consisting of the section 15 is formed. The door receiving stepped portion 14 has a width in the thickness direction of the side wall portion that is approximately 80% of the thickness of the side wall portion in order to accommodate the thickness of the portion of the window glass at the rear end of the door that does not have a handle; Therefore, the position of the door panel receiving step 15 is also determined to form this width.

The pillar front panel section 3 is covered and hidden from view by the door 16 in the closed state, which is shown by a two-dot chain line in FIG. The lower part of the rear fender panel 6, including the lower part of the pillar front panel part 3, becomes a part of a side sill outer 18 that constitutes the side sill 8.

As shown in FIG. 2, the door receiving inner panel 20 is a plate member bent into an approximately L-shape. The front end of the door receiver inner panel 20 is connected to the door receiver stepped portion 1 of the pillar front panel portion 3 that extends in the left-right direction of the vehicle body.
4, and the rear end is joined to the rear end of the pillar front panel 3, so that the pillar front panel 3 and the door receiving inner panel 20 have a closed cross section. form a structure.

Further, the upper end of the door receiver inner panel 20 is joined to the pillar inner 22 of the center pillar 4 (the joined part is not shown), and the lower end is connected to the side sill 8.
Upper extension 2 of reinforcement panel 24 of
4'. The center pillar 4 is connected to the roof reinforcing part 23, and as a result, the roof reinforcing part 23 and the side sill 8 are connected by a closed cross-section structure, and the strength and rigidity around the center pillar 4, which is important in the vehicle body structure, is improved. Note that the joining in the above embodiments is carried out by spot welding at the positions indicated by x marks in each figure.

As shown in FIG. 3, the second embodiment is a modification of the first embodiment, in which a protrusion 40 is formed on the interior side of the door receiver inner panel 20 to enhance the reinforcing effect. The door 16 has a large rear extension 1
6', the rear extension part 16' almost completely hides the joint between the door receiving step part 14 and the door receiving inner panel 20, and has the effect of realizing a beautiful appearance at low cost.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the vicinity of the center pillar of the first embodiment of the present invention seen from outside the vehicle, Fig. 2 is a perspective view of the vicinity of the side sill of Fig. 1 seen from inside the car, and Fig. 3 is a perspective view of the vicinity of the side sill of Fig.
It is a sectional view of an example. 2... Roof panel, 3... Pillar front panel, 4... Center pillar, 6... Rear fender panel, 8... Side sill, 12... Door opening, 1
3...Rear quarter window opening, 14...Door holder step, 15...Door panel holder step, 16...
...Door, 20...Door receiver inner panel, 30...
...Flange.

Claims (1)

[Claims] 1. In a two-door vehicle in which side doors are attached to the door openings on the left and right sides of the vehicle body, there is a door that extends vertically in the front part of the rear fender panel and forms the trailing edge of the door openings and faces the front of the vehicle body. A pillar front panel part is formed of a receiving step part and a door panel receiving step part facing outside of the vehicle body, and a door panel receiving part that extends in the vertical direction is formed by the pillar front panel part and a door receiving inner panel arranged on the indoor side. The front end of the door receiver inner panel is joined to a flange provided at the front end of the door receiver step, and the rear end is joined to the inner surface of the door panel receiver step so as to form a cross-sectional structure; A rear body structure for a two-door automobile, characterized in that an upper part of the closed cross-section structure is continuously joined to a center pillar cross section, and a lower part thereof is connected to a side sill.