JPH1159486A - Chassis frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the ability of absorbing shock in an oblique direction. SOLUTION: An energy absorbing box mainbody 8 which has an outside face 6 inclined to be gradually expanded outward as tending forward and an inside face 7 extended to the longitudinal direction is mounted at the front end of the chassis mainbody 2 of a vehicle for connection between the right and left sides of the energy absorbing box mainbody 8 with a connection member 14. In this way, when slight shock is applied to the chassis mainbody 2, the energy absorbing box mainbody 8 is subjected to the shock and deformed to absorb shock energy. In shock on the front face, the inside face 7 extended to the longitudinal direction of the energy absorbing box mainbody 8 is sufficiently subjected to the shock and then deformed (elastically or plastically deformed) to efficiently absorb energy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chassis frame, and more particularly, to a chassis frame capable of increasing the ability to absorb an oblique impact force.

[0002]

2. Description of the Related Art Generally, a vehicle such as an automobile is constructed by mounting a vehicle body on an upper portion of a chassis frame and fastening and fixing the chassis frame and the vehicle body with bolts or the like to integrate them.

[0003] The chassis frame has a pair of left and right chassis frame bodies extending in the front-rear direction and a traveling mechanism such as an engine or wheels mounted thereon.

The chassis frame is provided with various energy absorbing mechanisms for absorbing impacts in addition to mounting a traveling mechanism such as an engine and wheels. One of such energy absorbing mechanisms is, for example, an energy absorbing box.

The energy absorbing box is shown in FIGS.
As shown in FIG. 3, an energy absorbing box main body 3 having a substantially rectangular box shape is attached to a front end of a chassis frame main body 2 on which the vehicle body 1 is mounted.

When a light impact force is applied to the chassis frame body 2, the energy absorbing box body 3 is deformed by the impact force to absorb the collision energy and the like.

[0007]

However, the energy absorbing box attached to the front end of the conventional chassis frame body 2 has the following problems.

That is, since the energy absorbing box main body 3 has a substantially rectangular box shape, the front surface 4 extending in the front-rear direction of the energy absorbing box main body 3 sufficiently prevents the impact force from the front. Since it is deformed after receiving it, it is possible to efficiently absorb energy. However, as shown in FIG. Has a low ability to absorb energy due to bending deformation.

In FIG. 13, reference numeral 5 denotes an oblique rigid wall.

The present invention has been made in view of the above circumstances, and has as its object to provide a chassis frame capable of enhancing the ability to absorb an oblique impact force.

[0011]

SUMMARY OF THE INVENTION The present invention relates to an energy storage device having an inclined outer surface 6 which extends outward as it moves forward and an inner surface 7 which extends in the front-rear direction at the end of a chassis frame body 2 of a vehicle. The chassis frame is characterized in that the absorption box main body 8 is attached and the left and right energy absorption box main bodies 8 are connected by a connecting member 14.

In this case, the second energy absorbing box main body 19 may be attached to the front of the first energy absorbing box main body 8.

According to the above means, the following effects can be obtained.

When a light impact force acts on the chassis frame body 2, the energy absorbing box body 8 is deformed by the impact force to absorb the collision energy and the like. , The inner surface 7 extending in the front-rear direction of the
Is deformed (elastic deformation or plastic deformation) after receiving sufficient impact force, so that energy can be efficiently absorbed.

Further, with respect to an oblique impact force, the inclined outer surface 6 which expands outward as it advances forward of the energy absorbing box main body 8 is deformed (elastic deformation or plastic deformation) after receiving the impact force sufficiently. As a result, the energy can be efficiently absorbed.

Alternatively, for an oblique impact force,
The inclined outer surface 6 that spreads outward as it proceeds forward of the energy absorbing box main body 8 transmits an impact force to the corresponding chassis frame main body 2, and the corresponding chassis frame main body 2
The energy can be efficiently absorbed by elastically deforming.

After absorbing the energy, the chassis frame body 2 returns to its original state due to its elasticity. At this time, since the amount of deformation of the chassis frame body 2 is very small, the influence of the temporary deformation does not remain.

Further, one side of the energy absorbing box body 8
Is transmitted to the energy absorbing box body 8 on the opposite side via the connecting member 14 and received by the energy absorbing box bodies 8 on both sides.
It is possible to effectively absorb the energy of the impact force from the oblique direction.

Further, by attaching the second energy absorbing box main body 19 to the front of the first energy absorbing box main body 8, an impact force is generated between the first energy absorbing box main body 8 and the second energy absorbing box main body 19. Can be absorbed in two stages, so that the energy of the impact force from an oblique direction or from the front can be more effectively absorbed.

[0020]

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

FIGS. 1 to 7 show a first embodiment of the present invention.

The basic structure of the vehicle is shown in FIG.
Since the configuration is the same as that of FIG. 12, the same portions are denoted by the same reference numerals and description thereof will be omitted.

In the present invention, the chassis frame body 2 of the vehicle is used.
Is characterized in that an energy absorbing box main body 8 having an inclined outer surface 6 extending outward as it advances forward and an inner surface 7 extending in the front-rear direction is attached to the front end of the box.

As shown in FIGS. 3 and 4, the energy absorbing box main body 8 includes an outer member 9 and an inner member 10.
The rear flange 12 is fixed to the mounting flange 11 welded to the front end of the chassis frame body 2 by bolts 13.

Furthermore, the left and right energy absorbing box main bodies 8
The space is connected by the connecting member 14.

The connecting member 14 is fixed to the flange 15 on the front end side of the energy absorbing box body 8 by welding. Here, the flange 15 on the front end side of the energy absorbing box main body 8 is bent halfway so that the inner portion is substantially perpendicular to the inner surface 7 and the outer portion is substantially perpendicular to the outer surface 6. ing. The connecting member 14 is also bent in accordance with the fold of the flange 15 on the front end side of the chassis frame body 2.

In FIG. 4, reference numeral 16 denotes a metal front bumper mounted on the front portion of the vehicle body 1, and 17 denotes a resin balance panel mounted on a lower portion of the front bumper 16. The panel 17 and the energy absorbing box main body 8 are structurally separated from each other.

Next, the operation will be described.

When a light impact force is applied to the chassis frame body 2, the energy absorbing box body 8 is deformed by the impact force to absorb the collision energy and the like. , The inner surface 7 extending in the front-rear direction of the
Is deformed (elastic deformation or plastic deformation) after receiving sufficient impact force, so that energy can be efficiently absorbed.

In addition, as shown in FIG. 5, with respect to an impact force from an oblique direction, the inclined outer surface 6 which spreads outward as it proceeds forward of the energy absorbing box main body 8 receives the impact force sufficiently. (E.g., elastic deformation or plastic deformation), so that energy can be efficiently absorbed.

Alternatively, for an impact force from an oblique direction,
The inclined outer side surface 6 that expands outward as the energy absorbing box main body 8 advances forward transmits an impact force to the corresponding chassis frame main body 2, and the corresponding chassis frame main body 2 is elastically deformed as shown in FIG. This makes it possible to efficiently absorb energy.

After the energy is absorbed, the chassis frame body 2 returns to its original state due to its elasticity, as shown in FIG. At this time, since the amount of deformation of the chassis frame body 2 is very small, the influence of the temporary deformation does not remain.

Further, one side of the energy absorbing box body 8
Is transmitted to the energy absorbing box body 8 on the opposite side via the connecting member 14 and received by the energy absorbing box bodies 8 on both sides.
It is possible to effectively absorb the energy of the impact force from the oblique direction.

FIGS. 8 to 10 show a second embodiment of the present invention, in which a U-shaped cover 18 is attached so as to cover the end of the connecting member 14 when viewed from the side. Thus, the second energy absorbing box main body 19 is attached to the front part of the first energy absorbing box main body 8 in a superposed manner.

The U-shaped cover 18 is bent on the way to the bent shape of the flange 15 on the front end side of the energy absorbing box main body 8 and the end of the connecting member 14.

As described above, by attaching the second energy absorbing box main body 19 to the front portion of the first energy absorbing box main body 8 in an overlapping manner, the first energy absorbing box main body 8 and the second energy absorbing Since the impact force can be absorbed in two stages by the absorption box main body 19, the energy of the impact force obliquely or from the front can be more effectively absorbed.

Except for the above, the present embodiment has the same configuration as that of the above-described embodiment, and the same operation and effect can be obtained.

It should be noted that the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

[0039]

As described above, according to the chassis frame of the present invention, it is possible to obtain an excellent effect that the ability to absorb an oblique impact force can be enhanced.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a first embodiment of the present invention with a part removed.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a side view of FIG. 2;

FIG. 5 is a plan view showing how the energy absorbing box of FIG. 2 is deformed by an oblique impact force.

FIG. 6 is a plan view following FIG. 5;

FIG. 7 is a plan view following FIG. 6;

FIG. 8 is a partially enlarged schematic perspective view of a second embodiment of the present invention.

FIG. 9 is an exploded view of FIG.

FIG. 10 is a side view of FIG. 8;

FIG. 11 is a schematic perspective view of a conventional example with a part removed.

FIG. 12 is a partially enlarged view of FIG. 11;

FIG. 13 is a plan view showing how the energy absorbing box of FIG. 12 is deformed by an oblique impact force.

[Explanation of symbols]

 2 Chassis frame main body 6 Outer side surface 7 Inner side surface 8 First energy absorbing box main body 14 Connecting member 19 Second energy absorbing box main body

Claims (2)

[Claims] 1. An energy absorbing box having, at an end of a chassis frame body (2) of a vehicle, an inclined outer surface (6) expanding outward as it moves forward, and an inner surface (7) extending in the front-rear direction. A chassis frame having a main body (8) attached thereto and left and right energy absorbing box main bodies (8) connected by a connecting member (14). 2. The first energy absorbing box body (8).
The chassis frame according to claim 1, wherein a second energy absorbing box body (19) is mounted on a front portion of the chassis.