JPH0717250A - Car body structure with reinforced rear door for vehicle - Google Patents

Abstract

PURPOSE:To provide a car body structure with reinforced rear doors for vehicle which can suppress the penetration into cabin of a rear door more than before by transmitting the load inputted into the rear door effectively to the side of car body at side collision. CONSTITUTION:This is a car body structure where a guard cover 5 is arranged, in the longitudinal direction of a vehicle, in the rear door 1 to open and close the rear door opening 21 of a car body, while the section on the rear side of a vehicle of the margin 22 of the rear door opening 21 is made of the front section of a rear wheel house 23, and the rear wheel house 23 is constituted of a wheel house outer 24, a wheel house inner 25, and flanges 24a and 25 junctioned together. A bulge 25b projecting inward is made inside the opening 21 of the rear door, and the rear end 5a of the guard cover 5 is overlapped so that the rear end 5a may engage the bulge 25b at side collision of the vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved vehicle body structure for preventing the rear door from entering the interior of a vehicle in the event of a side collision of the vehicle.

[0002]

2. Description of the Related Art As a conventional device of this type, there is, for example, one shown in FIGS. Reference numeral 1 in the drawing denotes a rear door, and the outer shape of the rear door 1 is formed by a door outer panel 2 and a door inner panel 3. The rear door 1 is provided with an armrest 4 on the vehicle interior side, and a guard bar 5 is provided inside the door 1 at substantially the same height as the armrest 4 along the vehicle front-rear direction.

On the other hand, the vehicle rear side portion of the opening peripheral edge portion 7 of the rear door opening 6 opened and closed by the rear door 1 is shown in FIG.
As shown in, the rear wheel house 8 is configured on the front side. This rear wheel house 8
It is composed of a wheel house outer 9 and a wheel house inner 10. The wheel house outer 9 and the wheel house inner 10 are assembled by joining flange portions 9a, 10a formed at the peripheral edge portions.

Reference numeral 11 is a rear fender that forms the outer surface of the vehicle body.

At the time of a vehicle side collision, the rear door 1 is prevented from being deformed by the guard bar 5 and is prevented from entering the passenger compartment.

Another structure for preventing the door from entering the passenger compartment in the event of a side collision of the vehicle is, for example, that shown in FIG. 5 (actual opening 61-18372).
(See Japanese Patent Publication No. 3). That is, an engaging portion 13 a having an uneven shape is formed on the lower end of the door 13 of the vehicle, and an engaged portion 14 a having an uneven shape with which the engaging portion 13 a engages is formed on the side sill 14.

At the time of a side collision of the vehicle, the door 13 is moved to the inside of the vehicle from the state shown in FIG. 5A to the state shown in FIG. 5B, and the engaging portion 13a formed at the lower end portion of the side sill 14 is formed. It engages with the engaged portion 14a. Due to this engagement, the entry of the door 13 into the vehicle interior is suppressed.

[0008]

However, in the conventional ones shown in FIGS. 3 and 4, the path transmitted from the rear end portion of the guard bar 5 to the vehicle body side in a vehicle side collision is as follows. Rear wheel house 8 from this rear end
Since the flanges 9a, 10a take a path to be transmitted to the flanges 9a, 10a, the flanges 9a, 10a are easily deformed. Therefore, in order to effectively bear the collision load on the vehicle body side, it is necessary to improve the plate thickness or omit the illustration. It is necessary to make the lock state of the door lock device to be strong so as to prevent the door 13 from entering the vehicle interior.

Further, in the case as shown in FIG. 5, the door 1
Since the lower end of 3 engages with the vehicle body side, it engages at a position distant from the vicinity of both ends of the guard bar 5, which is the most effective place. There is a problem that the collision load cannot be effectively transmitted to the vehicle body side.

Therefore, the present invention provides a vehicle body structure for reinforcing a rear door portion for a vehicle, which can effectively transmit the load input to the rear door at the time of a side collision to the vehicle body side and suppress the entry of the rear door into the vehicle compartment as compared with the conventional vehicle. It is an issue.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a guard bar is provided in the rear door that opens and closes a rear door opening of a vehicle body along the vehicle front-rear direction. The vehicle rear side portion of the peripheral portion of the opening is configured on the front side of the rear wheel house, and the rear wheel house is a vehicle body structure configured by joining flange portions of a wheel house outer and a wheel house inner, In a part of the wheel house inner,
A rear door part for a vehicle, wherein a bulging part projecting inside the opening of the rear door is formed to overlap a rear end part of the guard bar so that the rear end part engages with the bulging part in a vehicle side collision. It is characterized by a reinforced car body structure.

Further, the upper surface of the bulging portion and the upper surface of an armrest provided inside the vehicle interior of the rear door are set to substantially the same height, and the front end edge portion of the upper surface of the bulging portion and the armrest. It is also possible to make it close to the rear edge.

[0013]

[Operation] According to such means, the load inputted to the rear door at the time of the side collision of the vehicle is mainly carried by the guard bar to suppress the deformation, and the load is transmitted from the rear end portion of the guard bar to the rear wheel house.

In this case, since the rear end of the guard bar overlaps the bulging portion of the wheel house inner, the load from the rear end of the guard bar is input to this portion. Therefore, as compared with the conventional input to the flange portion, the bulging portion has a closed cross-section structure and improved rigidity, so that it is possible to effectively bear the load. As a result, entry of the rear door into the vehicle interior can be suppressed more than ever before.

Further, the upper surface of the bulging portion is made substantially at the same height as the upper surface of the armrest of the rear door, and the rear end edge portion of the upper surface portion and the front end edge portion of the upper surface portion of the bulging portion are close to each other. Since the bulging portion can be used as a part of the armrest, it does not give a strange appearance.

[0016]

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

1 and 2 show an embodiment of the present invention. The same or equivalent members as the conventional ones will be described with the same reference numerals. First, the structure will be described. In the figure, reference numeral 1 is a rear door, and the rear door 1 has an outer shape formed by a door outer panel 2 and a door inner panel 3. There is.
The rear door 1 is provided with an armrest 4 on the inside of the vehicle, and the armrest 4 is provided inside the door 1.
A guard bar 5 is arranged at substantially the same height as the front and rear direction of the vehicle.

On the other hand, the vehicle rear side portion of the opening peripheral edge portion 22 of the rear door opening 21 opened and closed by the rear door 1 is
It is configured on the front side of the rear wheel house 23. As shown in FIG. 1, the rear wheel house 23 is composed of a wheel house outer 24 and a wheel house inner 25. The wheel house outer 24 and the wheel house inner 25 are formed in a generally arched shape, and the flange portion 24 formed at the peripheral edge portion.
a and 25a are joined and assembled.

More specifically, the wheel house inner 25
A bulging portion 25b that protrudes inside the rear door opening 21 is formed at a portion that is substantially the same height as the guard bar 5. The bulging portion 25b and the wheel house outer 24 have a closed cross-section structure.

As a result, the bulging portion 25b and the guard bar 5 are
The rear end 5a is set so as to overlap in the range of the distance L in FIG. 1, and in the case of a vehicle side collision, the rear end 5a of the guard bar 5 engages with the bulging portion 25b in the overlapping range. It is supposed to meet.

The upper surface 25c of the bulge 25b
Is formed in a planar shape, and the height thereof is set to be substantially the same as that of the upper surface portion 4 a of the armrest 4, and the upper surface portion 4 a
The rear edge 4a of the a and the front edge 25d of the upper surface 25c of the bulging portion 25b are set to be close to each other.

A finisher (not shown) is arranged on the vehicle interior side of the wheel house inner 25, and the finisher forms an X portion between the bulging portion 25b indicated by a chain double-dashed line in FIG. 1 and the armrest 4. I'm trying to fill it.

Next, the operation will be described.

The load input to the rear door 1 at the time of a side collision of the vehicle is mainly carried by the guard bar 5 and deformation of the rear door 1 itself is suppressed, and the load is transmitted from the rear end portion 5a of the guard bar 5 to the rear wheel house 23. It

In this case, the rear end portion 5a of the guard bar 5 is
Since it overlaps with the bulging portion 25b of the wheel house inner 25, the load from the guard bar rear end portion 5a is input to this portion. Therefore, compared with the conventional input to the flange portion, the bulging portion 25b has a closed cross-sectional structure and has improved rigidity, so that it is possible to effectively bear the load.

As a result, the intrusion of the rear door 1 into the vehicle interior can be suppressed more than ever before.

The upper surface portion 25c of the bulging portion 25b is made substantially the same height as the upper surface portion 4a of the armrest 4 of the rear door 1, and the rear end edge portion 4b of the upper surface portion 4a and the bulging portion 2 are formed.
Since the front end edge portion 25d of the upper surface portion 25c of 5b is set to approach, the bulging portion 25b can be used as a part of the armrest 4, and at the same time, it does not give a strange appearance. Moreover, Wheelhouse Inner 2
If the X portion between the armrest 4 and the bulging portion 25b is filled with the finisher 5 disposed inside the vehicle compartment, the sense of unity between the armrest 4 and the bulging portion 25b can be further strengthened. .

[0028]

As described above, according to the present invention, the rear end portion of the guard bar overlaps with the bulging portion of the wheel house inner, and when the vehicle side collision occurs,
Since the load from the rear end of the guard bar is input to the bulged part, compared to the conventional one that is input to the flange part, this bulged part has a closed cross-section structure and improved rigidity. Therefore, it is possible to effectively bear the load.
As a result, entry of the rear door into the vehicle interior can be suppressed more than ever before.

Further, the upper surface of the bulging portion is made to have substantially the same height as the upper surface of the armrest of the rear door, and the rear edge of the upper surface and the front edge of the upper surface of the bulging portion are close to each other. Since it is set so that it can be used as a part of the armrest, at the same time, it exerts a practically useful effect that it does not give a strange appearance.

[Brief description of drawings]

FIG. 1 is a sectional view taken along the line AA of FIG. 2 showing an embodiment of the present invention.

FIG. 2 is a perspective view of a part of the vehicle interior side showing the embodiment.

FIG. 3 is a perspective view corresponding to FIG. 2 showing a conventional example.

FIG. 4 is a sectional view taken along line BB of FIG. 3 showing the conventional example.

FIG. 5 is a sectional view taken along the vertical direction on the lower end side of the door showing another conventional example.

[Explanation of symbols]

 1 rear door 4 armrest 4a upper surface 4b rear edge 5 guard bar 5a rear end 21 rear door opening 22 opening peripheral edge 23 rear wheel house 24 wheel house outer 25 wheel house inner 25b bulge 25c upper surface 25d front edge

Claims (2)

[Claims] 1. A guard bar is arranged along a vehicle front-rear direction in a rear door that opens and closes a rear door opening of a vehicle body, and a vehicle rear side portion of a peripheral edge portion of the rear door opening is provided at a front side of a rear wheel house. In the vehicle body structure, wherein the rear wheel house is configured by joining flange portions of a wheel house outer and a wheel house inner, a bulging portion projecting inside the rear door opening is formed in a part of the wheel house inner. And a rear end portion of the guard bar overlapped with each other, and the rear end portion is set to engage with the bulging portion when a vehicle side collision occurs. 2. The upper surface of the bulging portion and the upper surface of an armrest provided inside the rear door in the vehicle compartment are set to have substantially the same height, and the front end edge portion of the upper surface of the bulging portion and the armrest. 2. The vehicle body structure for reinforcing a rear door portion of a vehicle according to claim 1, wherein the rear end portion of the vehicle body is close to the rear edge portion.