JPH0522420Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a door structure of a car such as a four-door sedan, in which the rear edge of the front door and the front end of the rear door are spaced apart and butt against each other. .

(Prior Art) Conventionally, in the above-mentioned four-door sedan, as shown in FIG. 7, the rear end 72a of the front door 72 on the outside of the center pillar 71 and the front end 73a of the rear door 73 are spaced apart from each other. They are arranged so as to be in a butt state.

By the way, in the event of a head-on collision of a car, etc., the front door 72 moves backward due to an external force, and the rear end 72 of the front door 72 moves backward as shown by the imaginary line in the figure.
If a enters a large amount inside the rear door 73,
Both doors 72 and 73 interfere with each other and the front door 7
In addition to 2, there is a problem in that the closing operation of the rear door 73 becomes troublesome.

Therefore, conventionally, as described in Japanese Utility Model Application Publication No. 61-5265, when the front door is retracted, the rear end of the front door is It has been proposed to prevent the rear end of the front door from sliding into the inside of the rear door by providing a sliding guide surface to guide the rear end of the front door toward the outside of the vehicle, but this structure only takes into account head-on collisions. However, when the vehicle is rear-ended, the front edge of the rear door wraps outward from the rear edge of the front door.

Conventionally, the rear end of the front door and the front end of the rear door are at different levels in the vehicle width direction, and the front end of the rear door is positioned inside the rear end of the front door, thereby preventing the above-mentioned problems. has also been proposed.

However, in the conventional structure described above, the front end of the rear door protrudes longer forward than the pivot axis of the rear door relative to the center pillar, so if the front end of the rear door is turned inward, the front end of the rear door There is a risk that the door panel may interfere with the hinge, and the molding accuracy and assembly accuracy of the door panel must be strictly controlled to prevent this interference, which not only reduces productivity but also impairs the appearance. Was.

(Purpose of the invention) This invention reduces the amount of overlap between the front door and the rear door in the event of a rear-end collision, without creating a door structure with different levels or changing the structure of the center pillar. The purpose of the present invention is to provide an automobile door structure that facilitates escape from the interior of a vehicle.

(Structure of the device) This device has a front door and a rear door that open backwards, and the rear edge of the front door and the front edge of the rear door are separated from each other and are arranged in abutting condition. An impact bar with a closed cross section extending from the front end of the impact bar is provided, and the front end of the closed cross section of the impact bar is inclined in the vehicle width direction so as to avoid the front edge of the rear door from the rotation locus of the rear edge of the front door in the event of a rear-end collision. The vehicle door structure is characterized in that the rear door inner panel facing the inclined part is inclined in correspondence with the inclined part to form an inclined surface.

(Effects of the invention) According to this invention, when a vehicle is rear-ended, the front edge of the rear door is deformed by the movement of the above-mentioned impact bar, using the outer side end of the above-mentioned slope as a fulcrum,
Since the leading edge of the rear door is deformed so as to retreat from the rotational trajectory of the trailing edge of the front door, the amount of overlap between the front door and the rear door in the event of a rear-end collision is smaller than that of conventional structures, and as a result, only a small amount of force is required. The door can be opened while deforming the above-mentioned wrap portion, which has the effect of making it easier for the occupant to escape from the vehicle interior in the event of a rear-end collision.

(Example) An example of this invention will be described in detail below based on the drawings.

The drawings show the structure of an automobile door;
In the figure, a front door 2 is disposed at the front of a center pillar 1, and a rear door 3 is disposed at the rear thereof, and both doors 2 and 3 have a rearward-opening structure as shown in FIG.

The above-mentioned front door 2 has a door outer panel 4.
and the door inner panel 5, and a first member 6 is attached to a predetermined portion of the door inner panel 5.
An impact bar 8 extending in the longitudinal direction of the vehicle body and having a closed cross section formed by joining a second member 7 and a second member 7 is stretched.

Further, the aforementioned rear door 3 has a door outer panel 9.
and the door inner panel 10 are joined together, and a predetermined portion of the door inner panel 10 has a first
An impact bar 13 that extends in the longitudinal direction of the vehicle and has a closed cross section formed by joining the member 11 and the second member 12.
and each of these impact bars 8, 13
This is intended to improve the door side drag.

The rear edge 2a of the front door 2 and the front edge 3a of the rear door 3 are spaced apart from each other in the vehicle exterior side of the center pillar 1 in the front and rear, and are disposed in a butting state.

By the way, the impact bar 13 stretched inside the rear door 3 has the mounting surface 11a at the front end of the first member 11 bonded and fixed to the joint 10a of the rear door inner panel 10, while
and the second member 12, the outside of the vehicle is the front and the inside of the vehicle is the rear so that the rear door front edge 3a is avoided from the rotation trajectory A of the front door rear edge 2a (see Fig. 4) in the event of a rear-end collision. The inclined portion 14 is configured to be inclined outward in the vehicle width direction.

Then, the opposing portion of the rear door inner panel 10 described above is inclined so as to be substantially parallel to this inclined portion 14, thereby forming an inclined surface 15.

Note that 16 in FIG. 2 is a weather strip, and as shown in FIG. 3, the front portion of the rear door 3 is supported by the center pillar 1 by a door hinge 17.

The illustrated embodiment is configured as described above,
The action will be explained below.

Now, when a car is rear-ended, the impact bar 13 moves forward due to the collision force F acting on the car body (see Fig. 4), and after the front door rear edge 2a and the rear door front edge 3a collide, Due to the movement of the impact bar 13, the hemming joint portion of the rear door front edge 3a is deformed by inclining inwardly using the vehicle outer side end of the above-mentioned inclined portion 14 as a fulcrum, and this rear door front edge 3a is rotated by the rotation of the front door rear edge 2a. It is deformed so as to retreat from the moving trajectory A.

As a result, the amount of overlap between the front door 2 and the rear door 3 in the event of a rear-end collision is smaller than that of the conventional structure, so that the door can be opened while deforming the above-mentioned lap portion with a small amount of force. This has the effect of making it easier for the occupants to escape from the vehicle interior.

Moreover, unlike the conventional structure in which the structure of the center pillar is changed or the door is formed at different levels, this structure provides the inclined portion 14 on the impact bar 13 offset downward from the door hinge 17. When opening the rear door 3 under normal conditions, there is no possibility that the front end of the rear door 3 will interfere with the hinge pillar.

FIG. 5 shows another embodiment, in which the front end of the closed section formed by the first member 11 and the second member 12 is rotated by the front edge 3a of the rear door at the time of a rear-end collision. In order to avoid this, the sloped part 18 is formed to be inclined inward in the vehicle width direction so that the outside side of the vehicle is at the back and the inside side is at the front. This is a structure in which the opposing portions of the rear door inner panel 10 described above are inclined to form an inclined surface 19.

With this configuration, the front edge 3a of the rear door is deformed by the collision force F at the time of a rear-end collision, using the outer side end of the inclined portion 18 as a fulcrum, and the front edge 3a of the rear door is used to rotate the rear edge 2a of the front door. It deforms so as to retreat from the trajectory A to the outside of the vehicle.

As a result, the amount of overlap between the front door 2 and the rear door 3 in the event of a rear-end collision is smaller than that of the conventional structure, and as a result, the door can be opened while deforming the above-mentioned lap part with a small amount of force. This makes it easier for the occupants to escape from the vehicle interior.

Note that other points are the same as the previous embodiment, so in FIGS. 5 and 6, FIGS.
The same parts as in FIG. 4 are given the same numbers and symbols, and detailed explanation thereof will be omitted.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, and Fig. 1 is a side view of a four-door sedan showing the door structure of an automobile, Fig. 2 is an enlarged sectional view of the main part along the line - in Fig. 1,
Fig. 3 is an enlarged sectional view of the main part of the door hinge, Fig. 4 is an explanatory drawing in case of rear-end collision, Fig. 5 is a sectional view showing another example of the door structure, Fig. 6 is an explanatory drawing in case of rear-end collision, 7
The figure is a partial sectional view showing a conventional door structure. 2...Front door, 2a...Front door rear edge, 3...Rear door, 3a...Rear door leading edge, 1
0... Rear door inner panel, 13... Impact bar, 14, 18... Inclined part, 15, 19...
Slope.

Claims (1)

[Claims for Utility Model Registration] The front door 2 and the rear door 3 have a backward-opening structure, and the rear edge 2a of the front door 2 and the rear door 3
In a car in which the front edge 3a of the front edge 3a of the front edge of the vehicle is disposed in a butting state, an impact bar 13 with a closed cross section extending in the longitudinal direction of the vehicle body is provided inside the rear door 3, and the front end of the closed cross section of the impact bar 13 is used for rear impact. At the same time, the front edge 3a of the rear door is tilted in the vehicle width direction so as to avoid the rotation trajectory A of the rear edge 2a of the front door to form sloped parts 14, 18, and the rear door facing the sloped parts 14, 18 is tilted in the vehicle width direction. An automobile door structure in which an inner panel 10 is inclined in correspondence with the above-mentioned inclined parts 14 and 18 to form inclined surfaces 15 and 19.