WO1997010972A1

WO1997010972A1 - A reinforced bumper protection bar for vehicle and a method of making the same

Info

Publication number: WO1997010972A1
Application number: PCT/KR1995/000123
Authority: WO
Inventors: Tae Soo Kim
Original assignee: Tae Soo Kim
Priority date: 1995-09-18
Filing date: 1995-09-18
Publication date: 1997-03-27
Also published as: AU3486395A

Abstract

This invention relates to a reinforced bumper protection bar which comprises: a hollow body (3), a rod (4) positioned in the cavity of the hollow body (3) and a filling material (5) introduced into the volume between the hollow body (3) and the rod (4). The invention has the advantages of improving the strength of the bumper protection bar and the ability of absorbing the impact forces with no damages to vehicles without increasing the thickness of the hollow body (3).

Description

A REINFORCED BUMPER PROTECTION BAR FOR

VEHICLE AND A METHOD OF MAKING THE SAME

Field of Invention

This invention relates to a bumper protection bar for vehicle and,

more particularly to a reinforced bumper protection bar having a

hollow body filled with filling materials for improving the ability to

absorb the impact forces when the vehicle is collided.

Background of Invention

A bumper protection bar is, in the view of car styling, intended to

have a sporty and safe outlook.

And also, in the view of safety, intended to absorb the impact

forces.

Thus, the scope of application of the bumper protection bar is

limited by the car design, the functional characteristics of the vehicle and the purpose of the bar.

Most vehicles except a passenger car are provided with a bumper

protection bar, usually RV car(Recreational Vehicle) including jeep,

pick-up truck, light van and panel van; and specially bonnet-type

truck and cap over-type truck.

The shape of bumper protection bar is determined in accordance

with the style of the car.

The bar itself is a pipe with a hole made of stainless steel and

mounted on the vehicle by bending it.

The position at which the bumper protection bar is mounted is

usually a front or rear portion of the car and in some cases side

portion, too.

The bumper protection bar is mounted on the vehicle by the

fastening means, such as bolts or welding.

The styling effect of the bumper protection bar can be achieved by

just mounting it on the vehicle, but the ability to absorb the impact

force without damage to the vehicle varies according to the strength

of the bumper protection bar.

The impact forces to the vehicle is directly proportionate to the speed of the vehicle, and experience has shown that in high-speed

condition a conventional bumper protection bar having a hollow pipe

is structurally weak to the impact forces when collided.

This problem is caused by the fact that the protection bar is a

pipe with no filling material in it and also has somewhat thin

thickness.

Summary of invention

Accordingly, the primary object of the present invention is to

provide a reinforced bumper protection bar which can be shaped in

accordance with the car styling and also which has a high strength.

Further object of the present invention is to provide a reinforced

bumper protection bar that has an improved ability to absorb impact

forces with no damages to the vehicles.

To achieve the above object, the reinforced bumper protection bar

according to the invention comprised;

A Hollow body;

A rod positioned in the cavity of the hollow body and adapted to reinforce the bar ; and

A filling material introduced into the volume between the hollow

body and the rod to lessen the body deformation.

And the method of making the reinforced bumper protection bar

comprises the steps of ;

Inserting the rod into the cavity of the hollow body;

Bending the rod and the hollow body together to the shape in

accordance with the car styling;

Filling the filling material into the volume between the hollow

body and the rod ; and

Solidifying the filling material to secure it to the rod and hollow

body.

Brief Description of the Drawing

Further characteristics and advantages of the invention will

become evident during the detailed description which follows with

reference to the appended drawing, provided by way of non-limiting

example in which : Fig. 1 is perspective view of the vehicle mounting the bumper

protection bar according to the invention,

Fig. 2 is a sectional view of the bumper protection bar showing a

preferreed embodiment of the invention,

Fig. 3 is a sectional view of the bumper protection bar showing

another embodiment of the invention, and

Fig. 4 is a flow diagram for making the bumper protection bar

according the invention.

Detailed description of invention

Referring now in detail to the drawings.

Fig. 1 illustrates a bumper protection bar(2) mounted on the front

part of the body(l).

Fig.2 shows a bumper protection bar(2)which comprises a hollow

body(3), a rod(4) positioned coaxially at the center of cavity of the

hollow body(3) for improving the strength of the bar(2), and filling

material(5) introduced into the volume between the hollow body(3)

and the rod(4) to position the rod(4) in situ and to reinforce the strength of the bar(2).

The rod(4) is provided longitudinally with projections(β) on the

outer surface.

And the filling material(5) which position the rod(4) when the

rod(4) is inserted into the hole of the hollow body(3) is the mixture

of sawdust and adhesives.

Adhesives are preferably glue.

Fig.3 shows another embodiment of the invention which differs

only slightly from that illustrated in Fig 2 in that filling material(5)

is the mixture of cement and sands.

Fig. 4 is a flow diagram of the method of making the bumper

protection bar(2) illustrated in Fig. 2.

In the bumper protection bar(2) illustrated in Fig. 2,

the rod(4) is positioned at the center of cavity of the hollow

body (3) by centering and maintains the position by means of filling

material(5). And, thus, improves the strength of the bar(2).

The rod(4) is preferably provided with projections like in Fig. 2(A)

because it is more effective for the rod to maintaine the position by

filling material(5). Filling material(5) is sawdust.

Because it is light in weight but securely bonded by adhesives,

sawdust, when it fills the volume between the hollow body(3) and the

rod(4), acts effectively as a means to maintain the position of the

rod(4).

And also produces only a slight increase in weight of the bar(2),

which is helpful to the efficiency of the vehicle.

The bumper protection bar(2) in Fig. 3 employ a mixture of

cement and sands as filling material(5).

The mixture of cement and sands is relatively heavy, but improves

the strength of the bar(2) and the ability to absorb the impact force,

which prevents the deformation of the bar(2).

The method of making the above-described bumper protection bar

is as follows.

At first insert the rod(4) or the rod(4) provided with projections(β)

into the hole of the hollow body(3)(S 1). and bend the rod(4) and the

hollow body(3) to the shape in accordance with the car styling(S 2).

After centering the rod (4) in the hole of the hollow body (3), fill

the cavity with a filling material(5)(S 3). in the manner of filling into the one end after into the other end. And finally solidifying the

filling material to secure it the rod(4) and hollow body (3) (S 4).

The reinforced bumper protection bar according to the invention

improves the strength of the bar without increasing the thickness of

the hollow body by employing a rod and filling material in the hollow

body.

And acts as a guard of car body with sufficient strength.

Claims

1. A reinforced bumper protection bar comprising ;

a hollow body ;

a rod positioned in the cavity of the hollow body and adapted to

reinforce the bar ; and

a filling material introduced into the volume between the hollow

body and the core to lessen the body deformation.

2. The reinforced bumper protection bar according to claim 1,

wherein the said rod is provided longitudinally with one or more

projection.

3. The reinforced bumper protection bar according to claim 1,

wherein the said filling material is sawdust and adhesives.

4. The reinforced bumper protection bar according to claim 1,

wherein the said filling material is gypsum.

5. The reinforced bumper protection bar according to claim 1,

wherein the said filling material is resin.

6. The reinforced bumper protection bar according to claim 1,

wherein the said filling material is the mixture of cement and sands.

7. A process of making a reinforced bumper protection bar

comprising the steps of :

Inserting the rod into the cavity of the hollow body;

Bending the rod and the hollow together to the shape in

accordance with the car styling;

Filling the filling material into the volume between the hollow

body and the rod ; and

Solidifying the filling material to secure it to the rod and hollow

body.