KR101689574B1 - Bumper stay unit for vehicle - Google Patents

Abstract

A bumper beam unit for a vehicle is disclosed. A bumper beam unit for a vehicle according to an embodiment of the present invention includes a box portion joined to both rear sides of a bumper beam and a plate fixed to the side member connected to the box portion, Sectional shape in which diagonal lines intersecting each other have different lengths.

Description

[0001] BUMPER STAY UNIT FOR VEHICLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bumper sta- tion unit for a vehicle, and more particularly, to a bumper sta- tionary unit for a vehicle which improves collision absorption performance by dispersing stress generated in a bumper beam.

Generally, a bumper in a vehicle is designed to absorb a shock of a vehicle when the vehicle collides with another automobile or a fixed body, to secure the rider's safety, and at the same time, Is a buffer means to be placed.

The bumper includes a bumper beam unit mounted on a vehicle body side member through a mounting plate, the bumper beam mounted on both rear sides of a bumper beam disposed in front and rear of the vehicle, and a bumper beam unit disposed in front of the bumper beam An energy absorber for absorbing the impact force, and a bumper cover for covering the bumper beam and the energy absorber.

That is, as shown in FIG. 1, the conventional bumper beam unit 100 includes a side member (not shown) on the vehicle body side in a state where the bumper stays 120 are fastened to both sides of the rear side of the bumper beam 110, ).

A mounting plate 130 is welded between the bumper stamper 120 and the bumper beam 110 and a stamper plate 130 is welded between the bumper stamper 120 and a side member Assembled.

In the conventional bumper stays 120, the inner panel 121 and the outer panel 123, which are press-formed in a " C "shape, are overlapped and welded to each other to form a rectangular box shape.

However, since the bumper stasis unit 100 as described above is welded in a straight line to the surface of the bumper stall 120 that is in contact with the bumper beam 110 in a square or rectangular box shape, And the welding is concentrated on the welded portion.

In addition, the conventional bumper stasis unit 100 as described above has the problem that difficulty in molding and weight increase due to additional reinforcement added to prevent the bumper beam 110 from being bent during a collision have.

 The matters described in the background section are intended to enhance the understanding of the background of the invention and may include matters not previously known to those skilled in the art.

An embodiment of the present invention is to provide a bumper sta- bility unit for a vehicle in which stress applied to a vehicle is dispersed at the time of a collision by applying a stator having a shape of a parallelogram.

In one or more embodiments of the present invention, the bumper staunch unit for a vehicle includes a box portion joined to the rear both sides of the bumper beam and a plate fixed to the side member connected to the box portion, Shaped cross section in which the lengths of the diagonal lines intersecting with each other are formed to be different from each other.

The box portion may be integrally formed by extrusion molding.

The box portion may be formed of an aluminum extruded material.

The box portion may be formed by bending two sheets of sheet material and laminating them together.

Further, the box portion includes a pair of lateral sides of a predetermined length parallel to the vehicle width direction; And a pair of inclined sides connecting both ends of the pair of side walls.

The pair of inclined sides may be inclined such that the upper end faces the center of the bumper beam and the lower end faces the outside of the bumper beam.

The box portion may bend one end of each of the two sheets of plate material to form a welded end that is mutually joined inside the other end portions of the two sheets of plate material.

The embodiment of the present invention has an effect that the stress applied to the vehicle can be dispersed at the time of collision by applying a cross section formed in the shape of a parallelogram and at the same time the collapse of the bumper beam can be prevented to cope with the collision test.

In addition, effects obtained or predicted by the embodiments of the present invention will be directly or implicitly disclosed in the detailed description of the embodiments of the present invention. That is, various effects to be predicted according to the embodiment of the present invention will be disclosed in the detailed description to be described later.

1 is an exploded perspective view of a general automotive bumper beam unit.
2 is a perspective view illustrating a bumper staunch unit according to an embodiment of the present invention.
3 is a view illustrating a box portion of a bumper stasis unit according to an embodiment of the present invention.
4 is a view showing a box part of a bumper stasis unit according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It should be understood, however, that the drawings and the following detailed description are exemplary and explanatory of various embodiments for effectively illustrating the features of the present invention. Therefore, the present invention should not be limited to the following drawings and descriptions.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The terms used below are defined in consideration of the functions of the present invention, which may vary depending on the user, operator's intention or custom. Therefore, the definition should be based on the contents throughout the present invention.

In order to efficiently explain the essential technical features of the present invention, the following embodiments will appropriately modify, integrate, or separate terms to be understood by those skilled in the art to which the present invention belongs , And the present invention is by no means thereby limited.

FIG. 2 is a perspective view of a bumper stasis unit according to an embodiment of the present invention, FIG. 3 is a view showing a box part of the bumper stasis unit according to an embodiment of the present invention, and FIG. Fig. 7 is a view showing a box portion of the bumper staunch unit according to the first embodiment.

2, the vehicle bumper sta- tion unit 1 according to the embodiment of the present invention is for connecting the bumper beam 3 to a side member (not shown) of the vehicle body, Are welded to both side rear surfaces of the side plate 3, respectively, and the rear side thereof is connected to the side member via the mounting plate 5.

The bumper stay unit 1 includes a rectangular box section 10 connected to both sides of the rear side of the bumper beam 3 and a mounting plate 5 connected to the box section 10 and fixed to both side members ).

At this time, the box portion 10 may have a rectangular parallelepipedal cross-section having a rectangular cross-section, and diagonal lines having different lengths.

Referring to FIG. 3, the box portion 10 may be an aluminum extruded material integrally formed.

The aluminum extruded material is light in weight, has excellent rigidity, is easy to process, and is excellent in productivity.

The box portion 10 may include a pair of side walls 11 having a predetermined length parallel to the vehicle width direction and a pair of side walls 13 connecting the opposite ends of the side walls 11, The pair of side roads 11 and the inclined sides 13 are connected to each other to form a parallelogram shape.

The pair of inclined sides 11 are formed such that both side faces are inclined at the same inclination with respect to the upward and downward directions of the vehicle.

That is, the pair of inclined sides 11 can be inclined such that the upper end faces the center of the bumper beam 3 and the lower end faces the outside of the bumper beam 3. Conversely, the upper end is inclined toward the bumper beam 3 , And the lower end may be inclined toward the center of the bumper beam 3. [

The inclined sides 11 are inclined at the same inclination. However, the inclined sides 11 are not necessarily limited to the inclined sides. The inclination of the inclined sides 11 may be the same or different.

Referring to FIG. 4, a box portion 10 according to another embodiment of the present invention will be described.

Referring to FIG. 4, the box portion 10 according to another embodiment of the present invention may be formed by bending two sheets of sheet material and laminating them together.

At this time, the box part 10 forms a parallelogram shape by welding and joining two different members made of steel.

In addition, the box portion 10 according to another embodiment of the present invention further includes a welding end 15 formed by bending one end of each of the two sheets of sheet material on the basis of FIG.

The welding end 15 joins the two sheets of sheet material on the inside of the other end portions.

That is, the box portion 10 according to another embodiment of the present invention includes a side portion 11 having a predetermined length parallel to the vehicle width direction, an inclined side portion 13 connecting the end portion of the side portion 11, 13 formed by bending and shaping one end portion of the steel plate 13 are welded from the inside to each other through the welding end 15 to form a parallelogram shaped cross section.

At this time, the welding end 15 may be joined to each other through either spot welding or CO2 welding.

Therefore, the vehicular bumper stait unit 1 according to the embodiments of the present invention having the above-described structure has a wider reinforcing area than the box part of the conventional square bumper staunch unit, Thereby, there is an effect of reducing the weight.

Since the box portion 10 is welded to the bumper beam 3 in the shape of the inclined sides 13 of the box portion 10 in the vehicular bumper stait unit 1 according to the embodiments of the present invention, It is possible to prevent impact strength enhancement and weld separation due to the effect of stress dispersion, and to improve productivity by utilizing various materials and processes.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 ... bumpers unit
3 ... bumper beam
5 ... mounting plate
10 ... box portion
11 ... Street
13 ... incline
15 ... Welding stage

Claims (7)

A bumper sta- tionary unit for a vehicle, comprising: a box portion joined to both rear sides of a bumper beam; and a plate coupled to the box portion and fixed to the side member,
The box portion
A pair of transverse sides of a predetermined length parallel to the vehicle width direction and a pair of inclined sides connecting both ends of the pair of transverse sides, And is integrally formed by extrusion molding in cross section. delete The method according to claim 1,
The box portion
A bumper staircase unit for a vehicle comprising an aluminum extruded material. The method according to claim 1,
The box portion
A bumper staircase unit for a vehicle, comprising two sheet members bent and joined together. delete The method according to claim 1,
The pair of inclined sides
Wherein an upper end of the bumper beam is directed toward a center of the bumper beam and a lower end of the bumper beam is inclined toward an outer side of the bumper beam. 5. The method of claim 4,
The box portion
And bending one end of each of the two sheets of sheet material to form a welding end which is mutually joined inside the other end of each of the two sheets of sheet material.

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