JP2003335260A - Body structure of vehicle with frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the deformation of a bend of a side rail at the time of collision. <P>SOLUTION: In the case that a load is applied at a head-on collision from the front end 12C of the side rail 12 toward the rear of a vehicle, a frame collision bracket 24 formed inside the bend 22 of the side rail 12 in the vehicle width direction moves in the load acting direction, i.e., toward the rear of the vehicle, and abuts to a body collisional reinforcement 20 installed in a position approximately on the same straight line as the bracket 24 in the fore-and-aft direction of the vehicle and fixed to the body to cause the load to be transmitted. <P>COPYRIGHT: (C)2004,JPO

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 of a vehicle with a frame, and more particularly to a vehicle body structure of a vehicle with a frame in an automobile in which a body is coupled to a chassis frame through a body mount.

[0002]

2. Description of the Related Art Conventionally, as an example of a vehicle body structure of a vehicle with a frame, in which a body is coupled to a chassis frame via a body mount, an example thereof is disclosed in JP 2001-2693A.
No. 8 publication.

As shown in FIGS. 10 (A) and 10 (B), in the vehicle body structure of this vehicle with a frame, a pair of a pair of members is provided to control the crash mode and the crash load at the time of a frontal collision (at the time of a frontal collision). The side rails 100 are respectively formed with bent portions 106 located in the vicinity of the rear of the front wheel 104 and bent inward in the vehicle width direction and upward in the vehicle height direction. A recess 108 is formed in a portion that will be a valley fold at the time of a collision. In addition, a wheel stopper 11 is provided on the side surface of the side rail 100 for pressing the front wheel 104 that retracts due to the valley bending of the recess 108 of the bent portion 106 at the time of a frontal collision.
0 is set.

[0004]

However, in the vehicle body structure of the vehicle with the frame, the collision energy is absorbed only on the frame side of the vehicle body at the time of a frontal collision, and the collision energy is not absorbed on the body side of the vehicle body. . As a result, the deformation of the bent portion 106 of the side rail 100 is increased at the time of a frontal collision, and the deformation of the body side may be increased.

In view of the above facts, an object of the present invention is to obtain a vehicle body structure of a vehicle with a frame which can reduce deformation of a bent portion of a side rail at the time of a collision.

[0006]

According to a first aspect of the present invention, in a vehicle body structure for a vehicle with a frame in which a body is coupled to a plurality of positions of a chassis frame through body mounts, the chassis frame is formed and the length is increased. A side rail having a bent portion that is bent outward in the vehicle width direction from a front end side in the longitudinal direction toward the center side in the longitudinal direction; an impact transmitting means formed at an inner portion in the vehicle width direction at the bending portion; On the other hand, a reinforcing member is provided on the center side in the longitudinal direction of the side rail, which is arranged at a position substantially on the same straight line as the shock transmitting means in the vehicle front-rear direction, and fixed to the body side. To do.

Therefore, when a load is applied from the front end side in the longitudinal direction of the side rail toward the center side in the longitudinal direction at the time of a frontal collision or a rearward collision, the impact transmission formed at the inner portion in the vehicle width direction at the bent portion is transmitted. The means move in the direction of load action,
The load is transmitted by being disposed on the longitudinal center of the side rail with respect to the impact transmitting means, at a position substantially collinear with the impact transmitting means in the vehicle front-rear direction, and abutting on a reinforcing member fixed to the body side. . As a result, a part of the collision energy can be received by the reinforcing member fixed to the body side. Therefore, the deformation of the bent portion of the side rail can be reduced at the time of a collision.

According to a second aspect of the present invention, in the vehicle body structure for a vehicle with a frame according to the first aspect, a gap is formed between the impact transmission means and the reinforcing member.

Therefore, in addition to the contents described in claim 1,
By forming the gap between the shock transmitting means and the reinforcing member, it is possible to prevent the shock transmitting means and the reinforcing member from interfering with each other due to the relative movement between the frame and the body when the vehicle normally travels.

The present invention according to claim 3 provides the vehicle body structure for a vehicle with a frame according to any one of claims 1 and 2.
It is characterized in that the impact transmission means and the reinforcing member are provided on the surfaces thereof facing each other with an engagement means which engages when the two approach each other.

Therefore, in addition to the contents of claims 1 and 2, the impact transmitting means and the reinforcing member have engaging means for engaging with each other when they approach each other, on the surfaces facing each other. When the load is transmitted from the impact transmitting means to the reinforcing member, slippage between the two can be prevented, so that absorption loss of collision energy can be reduced.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a vehicle body structure for a vehicle with a frame according to the present invention will be described with reference to FIGS.

As shown in FIG. 1, a vehicle body 10 of an automobile according to this embodiment includes a chassis frame 16 having a pair of left and right side rails 12 and a plurality of cross members 14 installed at predetermined positions in the vehicle longitudinal direction. A body (not shown) is coupled to the chassis frame 16 at a plurality of positions via body mounts 18.

On the body side of the vehicle body 10, a body collision reinforcement 2 serving as a pair of left and right reinforcing members.
0 is arranged along the vehicle front-rear direction.

At the boundary between the front portion 12A of the side rail 12 and the front-rear center portion 12B of the side rail 12, from the front end side in the longitudinal direction of the side rail 12, that is, from the front end 12C side of the side rail 12 in this embodiment. A bent portion 22 (also referred to as a kick portion) that is bent outward in the vehicle width direction toward the central portion 12B in the longitudinal direction of the side rail 12 is formed.

Further, in the vehicle width direction inner side portion of the bent portion 22,
A frame collision bracket 24 as an impact transmission means is provided, and the frame collision bracket 24 is provided at a portion of the bent portion 22 which is on a substantially extended line of the front portion 12A of the side rail 12 in plan view. .

As shown in FIG. 2, the bent portion 22 of the side rail 12 is bent downward from the vehicle from the front end 12C side of the side rail 12 toward the longitudinal central portion 12B side of the side rail 12 to cause a frame collision. The bracket 24 is arranged at a portion of the bent portion 22 which is on a substantially extended line of the front portion 12A of the side rail 12 in a side view.

As shown in FIG. 3, the frame collision bracket 24 is trapezoidal in plan view, and the vehicle width direction inner side wall portion 24A is linearly extended in the vehicle front-rear direction. In addition, the upper wall portion 2 of the frame collision bracket 24
The outer edge portion in the vehicle width direction of 4B is a flange 24C, and the flange 24C is the upper wall portion 12D of the side rail 12.
Is welded to.

The rear wall portion 24 of the frame collision bracket 24
D is linearly extended in the vehicle width direction. Further, the vehicle width direction outer edge portion of the rear wall portion 24D of the frame collision bracket 24 is bent obliquely rearward of the vehicle to form a flange 24E, and the flange 24E is welded to the vehicle width direction inner side wall portion 12E of the side rail 12. ing.

The front wall portion 24 of the frame collision bracket 24
F is linearly extended in the vehicle width direction. Further, an outer edge portion in the vehicle width direction of the front wall portion 24F of the frame collision bracket 24 is bent diagonally forward of the vehicle to form a flange 24G, and the flange 24G is welded to an inner wall portion 12E in the vehicle width direction of the side rail 12. ing.

As shown in FIG. 5, the outer edge of the lower wall portion 24H of the frame collision bracket 24 in the vehicle width direction is bent downward in the vehicle to form a flange 24J.
4J is welded to the inner wall portion 12E of the side rail 12 in the vehicle width direction.

As shown in FIG. 4, the body collision reinforcement 20 has a hat-shaped cross-section viewed from the vehicle front-rear direction with the opening facing upward, and a flange 20A formed at the opening end. , 20B are welded to the lower surface of the body side floor panel (not shown).
Therefore, the body collision reinforcement 20 and the floor panel on the body side form a closed cross-section structure extending in the vehicle front-rear direction.

As shown in FIG. 3, a contact panel 26 is provided at the front end of the body collision reinforcement 20, and the contact panel 26 has a U-shape in plan view. The base portion 26A of the contact panel 26 and the rear wall portion 24D of the frame collision bracket 24 are arranged parallel to each other along the vehicle width direction. That is, the body collision reinforcement 20 includes the frame collision bracket 24.
With respect to the side rail 12 in the longitudinal center side (rear side)
Is disposed at a position that is substantially on the same line as the frame collision bracket 24 in the vehicle front-rear direction, that is, a position that is substantially a straight line in plan view and side view, and contacts the rear wall portion 24D of the frame collision bracket 24. A gap 28 having a predetermined length L is formed between the contact panel 26 and the base portion 26A.

As shown in FIG. 5, a flange 26B is formed at the vehicle width direction outer end of the base portion 26A of the contact panel 26 toward the rear of the vehicle.
Is welded to the vehicle width direction outer side surface of the vehicle width direction outer front end portion 20C in the vehicle width direction outer side wall portion of the body collision reinforcement 20. In addition, the base portion 2 of the contact panel 26
A flange 26C is formed at the vehicle width direction inner end of 6A toward the rear of the vehicle.
It is welded to the vehicle width direction inner side surface of the vehicle width direction inner front end portion 20D in the vehicle width direction inner side wall portion of the body collision reinforcement 20.

As shown in FIG. 4, the vertical dimension H1 of the frame collision bracket 24 gradually increases toward the rear of the vehicle, and the rear wall portion 24D of the frame collision bracket 24 has a base portion 26A of the abutment panel 26. The distance M projects further below the vehicle. In addition, the vertical dimension H2 of the body collision reinforcement 20 is gradually lengthened toward the front of the vehicle at the tip, and the base 26A of the abutment panel 26 is located above the vehicle from the rear wall 24D of the frame collision bracket 24. The distance N projects.

Therefore, even when the bent portion 22 of the side rail 12 is bent upward in the vehicle at the time of a frontal collision, the contact panel 2
The base portion 26A of 6 and the rear wall portion 24D of the frame collision bracket 24 are surely brought into contact with each other.

Next, the operation of this embodiment will be described.

In this embodiment, the side rail 1 is provided at the time of a frontal collision.
When a load is applied from the front end 12 </ b> C of the second side toward the vehicle rear side, the frame collision bracket 24 disposed at the vehicle width direction inner side portion of the bent portion 22 of the side rail 12 is provided.
Moves toward the direction of the load, that is, moves toward the rear of the vehicle, and is disposed at a position substantially on the same straight line as the frame collision bracket 24 in the vehicle front-rear direction. To convey.

As a result, since a part of the collision energy can be received by the body collision reinforcement 20 fixed to the body side, the collision energy can be efficiently dispersed. Therefore, at the time of a frontal collision, the side rail 12
Since the bending (bending) moment of the bent portion 22 can be reduced and the deformation of the bent portion 22 can be reduced, it is possible to reduce the deformation of the chassis frame 16 that greatly affects the vehicle deformation at the time of a frontal collision. Further, the collision energy can be efficiently absorbed by the deformation of the side rail 12 and the body collision reinforcement 20 in the compression direction.

Therefore, in the present embodiment, the collision performance of the frame-equipped vehicle 10 can be significantly improved, and the weight reduction of the vehicle and the collision safety performance can both be achieved.

Further, in this embodiment, the rear wall portion 24D of the frame collision bracket 24 is the base portion 2 of the contact panel 26.
The contact panel 2 projects from the 6A below the vehicle by a distance M.
The base portion 26A of No. 6 projects from the rear wall portion 24D of the frame collision bracket 24 toward the vehicle upper side by a distance N. As a result, the base portion 26A of the contact panel 26 and the rear wall portion 24D of the frame collision bracket 24 reliably contact each other even when the bent portion 22 of the side rail 12 bends upward in the vehicle during a frontal collision. Therefore, even when the bent portion 22 of the side rail 12 is bent upward in the vehicle at the time of a frontal collision, the frame collision bracket 24 causes the body collision reinforcement 2 to move.
Since the collision energy can be reliably transmitted to 0, the absorption loss of the collision energy can be reduced.

Further, in the present embodiment, the contact panel 26 which constitutes the front end portion of the body collision reinforcement 20.
Since a gap 28 having a predetermined length L is formed between the base portion 26A of the vehicle and the rear wall portion 24D of the frame collision bracket 24, the chassis frame 16 when the vehicle normally travels.
It is possible to prevent the frame collision bracket 24 and the contact panel 26 of the body collision reinforcement 20 from interfering with each other due to the relative movement between the frame collision bracket 24 and the body. Further, the gap 28
The impact on the body side can be reduced by adjusting the length L of.

Next, a second embodiment of the vehicle body structure for a vehicle with a frame according to the present invention will be described with reference to FIGS.

The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 6, in the present embodiment, the rear wall portion 24D of the frame collision bracket 24 and the base portion of the contact panel 26, which are the surfaces of the frame collision bracket 24 and the body collision reinforcement 20 that face each other. 26A and the frame collision bracket 24 and the body collision reinforcement 20 are engaged with each other when the projection 30 serves as the engaging means or the recess 3 serves as the engaging means.
2 is formed.

As shown in FIG. 8, the convex portion 30 is formed in a substantially central portion of the rear wall portion 24D of the frame collision bracket 24 toward the vehicle rear side by pressing or the like, and the concave portion 32 is formed.
Is formed in a substantially central portion of the base portion 26A of the contact panel 26 toward the vehicle rear side by pressing or the like.

As shown in FIG. 7, the convex portion 30 and the concave portion 32 are formed.
Are formed at opposite positions, and in a frontal collision, the frame collision bracket 24 and the body collision reinforcement 2
When 0 and 0 approach each other, they engage with each other to prevent slippage between the frame collision bracket 24 and the body collision reinforcement 20.

Next, the operation of this embodiment will be described.

In the present embodiment, in addition to the operational effects described in the first embodiment, when the frame collision bracket 24 and the body collision reinforcement 20 approach each other at the time of a frontal collision,
The convex portion 30 formed on the rear wall portion 24D of the frame collision bracket 24 and the concave portion 32 formed on the base portion 26A of the contact panel 26 arranged at the front end portion of the body collision reinforcement 20 engage with each other. . As a result, the convex portion 3
The engagement between 0 and the recess 32 can prevent the frame collision bracket 24 and the body collision reinforcement 20 from slipping in the contact surface direction. Therefore, the frame collision bracket 24 and the body collision reinforcement 20 are surely brought into contact with each other, and the collision energy can be reliably transmitted from the frame collision bracket 24 to the body collision reinforcement 20. Therefore, the absorption loss of the collision energy can be reduced.

In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to such embodiments, and various other embodiments within the scope of the present invention. It is obvious to a person skilled in the art that For example, in the second embodiment described above, the convex portion 30 is formed on the rear wall portion 24D of the frame collision bracket 24 and the concave portion 32 is formed on the base portion 26A of the contact panel 26, but the rear wall portion 24D of the frame collision bracket 24 is formed. It is also possible to form a concave portion on the base and a convex portion on the base portion 26A of the contact panel 26. Further, the engaging means is not limited to the convex portion and the concave portion, and may have another configuration. For example, as shown in FIG. 9, the rear wall portion 24D of the frame collision bracket 24, which is the surface of the frame collision bracket 24 and the body collision reinforcement 20 that face each other, and the base portion 26A of the contact panel 26.
In addition, each of the frame collision bracket 24 and the body collision reinforcement 20 may be formed with a concave-convex surface 40 as an engaging means for engaging with each other.

Further, in the above embodiment, the side rail 1
2 and a frame collision bracket 24 as a shock transmission means
However, instead of this, for example, a part of the side rail 12 is bulged inward in the vehicle width direction to form the frame collision bracket 24, so that the side rail 12 and the frame as the impact transmission means are formed. The collision bracket 24 may be integrally structured.

In each of the above-described embodiments, the vehicle body structure of the vehicle with a frame having the bent portion 22 at the front portion of the side rail 12 has been described. However, the vehicle body structure of the vehicle with a frame of the present invention has a rear portion of the side rail 12. A vehicle body structure of a vehicle with a frame having a bent portion 22 on the side rail 12, that is, on the boundary between the rear portion of the side rail 12 and the central portion in the front-rear direction, the front end side in the longitudinal direction of the side rail 12, that is, the central portion side in the longitudinal direction from the rear end side. It is also applicable to a vehicle with another frame different from the above embodiment, such as a vehicle in which a bent portion that is bent outward in the vehicle width direction is formed.

[0043]

According to the present invention as set forth in claim 1, in a vehicle body structure of a vehicle with a frame in which a body is coupled to a plurality of positions of the chassis frame through body mounts, the chassis frame is formed and the length is increased from the front end side in the longitudinal direction. The side rail having a bent portion that is bent outward in the vehicle width direction toward the center side in the direction, the impact transmitting means formed on the inner portion in the vehicle width direction at the bending portion, and the longitudinal direction of the side rail with respect to the impact transmitting means. Since there is a reinforcing member that is disposed on the center side in a position substantially on the same straight line as the shock transmitting means in the vehicle front-rear direction and fixed to the body side, it is possible to reduce deformation of the bent portion of the side rail at the time of a collision. It has an excellent effect.

According to the present invention of claim 2, in the vehicle body structure for a vehicle with a frame according to claim 1, a gap is formed between the impact transmitting means and the reinforcing member. Therefore, in addition to the effect of claim 1, Thus, there is an excellent effect that it is possible to prevent the impact transmission means and the reinforcing member from interfering with each other when the vehicle normally travels.

The present invention according to claim 3 provides the vehicle body structure for a vehicle with a frame according to any one of claims 1 and 2.
In addition to the effect according to any one of claims 1 and 2, in addition to the effect according to any one of claims 1 and 2, the collision energy absorption is provided on the surfaces of the shock transmission means and the reinforcing member that face each other, the engagement means being engaged with each other. It has an excellent effect of reducing loss.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a vehicle body structure of a vehicle with a frame according to a first embodiment of the present invention.

FIG. 2 is a schematic side view with a part in section showing the vehicle body structure of a vehicle with a frame according to the first embodiment of the present invention.

FIG. 3 is an enlarged plan view showing a main part of the vehicle body structure of the vehicle with the frame according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a main part of the vehicle body structure of the vehicle with the frame according to the first embodiment of the present invention, as viewed from the diagonally rearward inside of the vehicle.

FIG. 5 is an exploded perspective view of a main part of the vehicle body structure of the vehicle with the frame according to the first embodiment of the present invention, as viewed from the diagonally rearward inside of the vehicle.

FIG. 6 is an enlarged plan view showing a main part of a vehicle body structure of a vehicle with a frame according to a second embodiment of the present invention.

FIG. 7 is a perspective view of a main part of a vehicle body structure of a vehicle with a frame according to a second embodiment of the present invention, as viewed from an obliquely rearward inside of the vehicle.

FIG. 8 is an exploded perspective view of a main part of a vehicle body structure of a vehicle with a frame according to a second embodiment of the present invention, as viewed from an obliquely rearward inside of the vehicle.

FIG. 9 is a perspective view showing a main part of a vehicle body structure of a vehicle with a frame according to another embodiment of the present invention, as viewed from an obliquely rearward inside of the vehicle.

10A is a plan view showing a vehicle body structure of a vehicle with a frame according to a related art, and FIG. 10B is a side view showing a vehicle body structure of a vehicle with a frame according to the related art.

[Explanation of symbols]

10 car body 12 side rails 14 cross members 16 chassis frame 20 Body collision reinforcement (reinforcing member) 22 Side rail bend 24 frame collision bracket (impact transmission means) 26 Frame collision bracket abutment panel 28 Gap 30 Convex part (engaging means) 32 recess (engaging means) 40 uneven surface (engagement means)

Claims (3)

[Claims] 1. A vehicle body structure of a vehicle with a frame in which a body is coupled to a plurality of positions of a chassis frame via body mounts, wherein the chassis frame is formed and a vehicle width is measured from a longitudinal end side toward a longitudinal center side. A side rail having a bent portion bent outward in the direction, an impact transmitting means formed on an inner portion in the vehicle width direction of the bent portion, and a longitudinal center of the side rail with respect to the impact transmitting means, A vehicle body structure for a frame-equipped vehicle, comprising: a reinforcing member that is disposed on a position substantially on the same straight line as the impact transmitting means in the vehicle front-rear direction and is fixed to the body side. 2. The vehicle body structure for a vehicle with a frame according to claim 1, wherein a gap is formed between the impact transmission means and the reinforcing member. 3. The engaging means for engaging with each other when the impact transmitting means and the reinforcing member are opposed to each other, the engaging means being engaged with each other. Body structure of a vehicle with a frame.