JP2726352B2 - Body structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure in which a vehicle compartment and a carrier behind it are integrally formed.

[0002]

2. Description of the Related Art Conventionally, a luggage carrier is provided behind a passenger compartment.
A body called a pickup is known.
By the way, as a vehicle body having such a structure, a structure in which a frame is assembled and a carrier is mounted thereon, and a structure in which a cabin portion and a carrier portion are separated [for example, NISSAN
No. 634 of the Datsun Truck D-Series (introduced by Nissan Motor Co., Ltd., September 1989)] and a so-called monocoque structure in which the cabin and the cargo bed are integrally formed [for example, Car commentary
Sunny Truck B122 type car (issued by Nissan Motor Co., Ltd. in October 1989)] is known.

[0003] The latter structure is advantageous in terms of weight reduction and miniaturization because the frame is not assembled, as compared with the former structure. In addition, the fuel economy can be improved by reducing the weight, and the miniaturization is possible. The cost can be reduced by the conversion.

[0004]

As described above, when a monocoque structure in which the cabin and the cargo bed are integrated is employed as described above, the weight and inertial force of the cargo acting on the cargo bed due to vertical vibration during traveling are reduced. Since the data is input from the cargo bed to the rear part of the cabin, the strength of the input portion from the cargo bed side at the rear part of the cabin tends to be insufficient (particularly, a situation where the cargo bed is twisted).

Further, in the case of a frontal collision or a rearward collision, the following problems occur between the cabin and the cargo bed. That is, at the time of a frontal collision, the inertial force of the load placed on the bed acts on the body in front of the body, and is further input from the bed to the rear of the passenger compartment. Usually, since the strength members of the bed are provided on the left and right sides, the input from the bed is input to the rear part of the cabin side, and this part is deformed forward, and further, the cabin side part is deformed. The door opening is deformed from behind, affecting the opening and closing of the door. Also, in the case of a rear collision, the input to the rear surface of the vehicle body is input from the cargo bed to the rear part of the cabin side, and similarly to the above, the door opening of the cabin side is deformed and affects the opening and closing of the door. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems.
It is an object of the present invention to provide a vehicle body structure in which a door opening is not deformed by an input from a cargo bed at the time of a rear collision.

[0007]

In order to achieve the above-mentioned object, in the vehicle body structure of the present invention, a cargo bed is formed behind a vehicle compartment by a vehicle back panel and formed on a side surface of the vehicle compartment. The provided vehicle interior side panel and a cargo side panel provided on a side surface of the cargo platform are integrally formed, and the vehicle compartment side panel has a door opening formed therein, and the door opening is formed. A door that opens and closes is provided, and
The upper side member provided along the base side panel
Lower side members provided at the lower portion of the bed to Rabbi it
Each is extended in the front-back direction, and the vehicle interior side panel includes:
A front pillar is erected along the rear side of the door opening.
The rear pillar is erected at a position separated from and behind the front pillar, and the upper ends of both pillars are
While being connected by a fusing rail,
Lower each other are connected with the side sills, the rear pillar
The front end of the upper side member is straight at the middle part in the vertical direction.
Connected at the lower end of the rear pillar
The front end of the lower side member is directly or indirectly
It has a configuration which is coupled to.

[0008]

[Action] in the normal time, the input from the bed into the passenger compartment direction, above
It is supported from the side side member and the lower side member by two pillars, a rear pillar and a front pillar vertically connected to the rear pillar. Therefore, sufficient strength can not be obtained in the vehicle cabin rear, the repeated input from ordinary bed, after the door opening of the vehicle compartment side panel
Side parts are hard to break.

At the time of a front or rear collision, an impact inputted from the cargo bed toward the vehicle compartment is first supported by the rear pillar.
And when this impact exceeds the strength of the rear pillar,
The rear pillar deforms toward the front of the vehicle body, deforms the rear pillar, and is transmitted to the front pillar, but the strength of the impact not absorbed by the rear pillar does not exceed the strength of the front pillar As long as the front pillar is not deformed. Therefore, the door opening provided in front of the front pillar is not easily deformed.

[0010]

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

First, the configuration of the embodiment will be described. FIG. 1 is a side view showing the appearance of an automobile to which the structure of the embodiment is applied.
(See 5) 1 to form a carrier C. A vehicle interior side panel 2 provided on the side surface of the vehicle interior R
And a carrier side panel 3 provided on a side surface of the carrier C.
Are integrally formed. In the drawing, FP is a fender panel made of a single iron plate, and constitutes an outer surface of the cabin side panel 2 and an outer surface of the carrier side panel 3.

A door opening (see FIG. 2) 21 is formed in the vehicle interior side panel 2 and a door 22 for opening and closing the door opening 21 is provided.
Above the rear position of the door 22, a fitting window 23 is provided.

Next, the structure will be described with reference to FIG. 2, which is a structural explanatory view showing pillars, side members and the like that form the frame of the vehicle body. The strength of the carrier side panel 3 is increased along the upper end of the carrier side panel 3. An upper side member 31 for holding is provided, and a lower side member 32 for holding the strength of the carrier C is also provided below a floor plate (not shown) of the carrier C.

FIG. 3 is a sectional perspective view showing the structure of the upper side member 31. As shown in FIG. 3, the upper end of the fender panel FP is bent toward the center of the loading platform C. The distal end side is bent downward to form a substantially L-shaped channel shape, and the inner panel 3a of the loading platform side panel 3 is similarly formed to a substantially L-shaped channel shape, and these are overlapped and spot-welded. The upper side member 31 is formed.

Returning to FIG. 2, the lower side member 3
2 extends from the rear end of the bed C to the wheel house HH along the lower surface of the floor plate of the bed C, and extends forward and downward from the wheel house HH on the front side.

The above-mentioned side members 31 and 32 are connected to a rear pillar 4 provided inside the vehicle body side plate 2. In describing the connection structure, first, the pillars will be described. In the vehicle interior side panel 2, the front pillars 5 are erected along the rear side of the door opening 21 and the rear of the front pillars 5. At the rear end of the passenger compartment side panel 2
Is erected. The two pillars 4 and 5 are joined by welding to a roof side rail 61 having a closed cross section whose upper end extends in the front-rear direction on the left and right sides of the roof 6 (FIG. 1).
Further, the lower end is connected to a side sill 7 having a closed cross section that extends in the front-rear direction on both left and right sides of the lower end of the vehicle compartment R. In the cabin side panel 2, a lower section of the window 23 between the pillars 4 and 5 has a closed cross section formed by the fender panel FP and an inner panel (not shown).
A member for connecting the pillars 4 and 5 to maintain strength is not provided inside this portion, and this portion is
Shock absorber 8 with lower strength than pillars 4 and 5 (Fig. 1)
Is composed. Incidentally, the space in the cabin R formed between the rear part of the door 22 in the cabin side panel 2 is used as a space for reclining a seat (not shown).

The front end of the upper side member 31 is directly connected to the middle of the rear pillar 4 by welding, and the front end of the lower side member 32 is indirectly connected to the lower end of the rear pillar 4. Is joined to. That is, FIG.
FIG. 5 is a cross-sectional view showing the coupling structure of the lower side member 32, and FIG. 5 is a cross-sectional view taken along S5-S5 of FIG. 3, the rear pillars 4 and the side sills 7 are arranged on the inner side in the vehicle width direction. The lower side member 32 has a front end joined to the lower end of the vehicle interior back panel 1 and the floor panel 12 by welding, and a vehicle interior at the front end extends in the vehicle width direction. It is connected to the member 9. The vehicle body outer surface of the lower side member 32 and the side sill 7 are connected via two brackets 10 and 11, that is, the lower side member 32
The lower side members 3 are connected to the rear pillar 4 via the cross members 9 and 0 and 11, respectively.
2, 32 are connected to each other.

Next, the operation of the embodiment will be described.

A) Normal Time Normally, when the vehicle is traveling with the load loaded on the load carrier C, the load of the load and the inertia force in the front-rear and vertical directions are applied to the load carrier C, and the upper and lower side members of the load carrier C 31,
The input is supported by two pillars 32 from a rear pillar 4 and a front pillar 5 vertically connected to the rear pillar 4. As described above, since the input from the bed C side is supported by the two pillars 4 and 5, a sufficient strength is obtained at the rear part of the cabin R. The rear is hard to break.

B) At the time of a collision At the time of a rear collision, the impact is input to the upper side member 31 and the lower side member 32, and each of the side members 31, 32 is bent and deformed as shown by the imaginary line in FIG. Then, the impact that has not been absorbed by this deformation is input to the rear pillar 4 from each of the side members 31 and 32. In addition, at the time of a frontal collision, the inertia force of the carrier makes the input from each of the side members 31 and 32 to the rear pillar 4.

When the impact inputted to the rear pillar 4 exceeds the strength of the rear pillar 4, the rear pillar 4 is deformed toward the front of the vehicle body. That is, as shown by the imaginary line in the figure, the rear pillar 4 has an intermediate portion bent forward, thereby deforming the shock absorbing portion 8. As a result, the input shock is absorbed by the shock absorbing portion 8, and the front pillar 5 is not deformed unless the strength of the shock not absorbed by the shock absorbing portion exceeds the strength of the front pillar 5. Therefore, the door opening 21 provided in front of the front pillar 5 is not easily deformed.

As shown, the lower end of the rear pillar 4 is not deformed despite the input from the lower side member 32. In this case, the lower side member 32
In this case, since the shape of the wheel house HH is largely bent downward at the portion thereof and the shape thereof is largely changed, the portion is greatly deformed at this portion, and it is difficult to transmit the impact forward from the position. The portion where the front end of the lower side member 32 is joined is formed firmly by the cross member 9, the rear pillar 4, the side sill 7, and the brackets 10, 11, so that the lower end of the rear pillar 4 is not easily deformed. .

As described above, in the present embodiment, the two pillars of the front pillar 5 and the rear pillar 4 are erected behind the door opening 21 in the passenger compartment side panel 2. This portion becomes very strong, and it is possible to prevent a portion connected to the upper side member 31 and the lower side member 32 for maintaining the strength of the loading platform C from being damaged by an input from the loading platform C side. In addition, in order to reinforce the cabin side panel 2 in this way, two pillars 4
By using No. 5, a compact structure can be achieved as compared with a case where the same strength is obtained by one pillar.

Further, 2 is provided to improve the strength.
A shock absorbing portion 8 is provided between the pillars 4 and 5 to
Since the excessive input from the side is absorbed by the shock absorbing portion 8, the door opening 21 is prevented from being deformed by the input on the loading platform C at the time of frontal or rear collision, and the door 22 is not opened or closed. This can contribute to the effect that it can be prevented from occurring.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to this embodiment. For example, in the embodiments, the strength of the carrier is maintained.
Although the two members of the upper side member 31 and the lower side member 32 are shown as a configuration of
In addition, other side members may be provided.

In the embodiment, the outer surfaces of the cabin side panel 2 and the cargo bed side panel 3 are formed by a single fender panel F.
Although the example formed by P is shown, a portion corresponding to the fender panel FP is configured by combining a plurality of plates as long as the vehicle interior side panel 2 and the cargo bed side panel 3 are integrally formed. Is also good.

[0027]

As described above, in the vehicle body structure according to the present invention, the rear side of the door opening in the vehicle interior side panel.
The two pillars , the front pillar and the rear pillar, are erected in the area of
And the lower edge of the roof side rail and support
Idsil connection
And the lower side member are connected,
Normally, the input from the loading platform is supported by a combination of two pillars , so that high strength is obtained and the effect of preventing damage to the rear part of the passenger compartment is obtained. The effect of being able to be constructed more compact than exhibiting strength is obtained, and at the time of a large input such as a collision, the rear pillar is deformed and then transmitted to the front pillar, so that the door opening An effect is obtained that deformation can be prevented and a problem in opening and closing the door can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view showing an appearance of an automobile to which an embodiment structure is applied.

FIG. 2 is a configuration explanatory view showing members forming a skeleton of a vehicle body to which the vehicle body structure of the embodiment is applied.

FIG. 3 is a perspective view showing a main part of the structure of the embodiment.

FIG. 4 is a transverse sectional view showing a main part of the structure of the embodiment.

FIG. 5 is a sectional view taken along line S5-S5 in FIG. 4 showing a main part of the structure of the embodiment.

[Explanation of symbols]

R casing C loading platform 1 cabin back panel 2 cabin side panel 21 door opening 22 door 3 bed side panels 31 upper Saidomen bar 32 after the lower Saidomen server 4 side pillar 5 front pillar 61 roof side rail 7 Saidoshi Le 8 Shock absorber

Claims (1)

(57) [Claims] 1. A backpack is defined behind a cabin by a cabin back panel, and a cargo bed is formed. A cabin side panel provided on a side surface of the cabin, and a cargo bed side provided on a side surface of the cargo bed. A panel is integrally formed, a door opening is formed in the vehicle interior side panel, and a door that opens and closes the door opening is provided, and an upper side panel provided along the cargo carrier side panel is provided.
A lower side member provided at a lower portion of the vehicle and the cargo bed respectively extends in a front-rear direction, and the vehicle interior side panel is formed along a rear side of the door opening.
The front pillar is erected, and this front pillar is
The rear pillar is erected at a position separated from the rear of the pillar, and the upper ends of both pillars are connected by the roof side rail.
And the lower ends of both pillars are
In coupled, the middle portion in the vertical direction of the rear pillar, said upper side
The front end of the member is connected directly or indirectly, and
The front end of the lower side member is straight at the lower end of the side pillar.
A vehicle body structure characterized by being connected or indirectly connected.