KR102009809B1 - Rear bumper integrated back beam - Google Patents

Rear bumper integrated back beam Download PDF

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Publication number
KR102009809B1
KR102009809B1 KR1020150028026A KR20150028026A KR102009809B1 KR 102009809 B1 KR102009809 B1 KR 102009809B1 KR 1020150028026 A KR1020150028026 A KR 1020150028026A KR 20150028026 A KR20150028026 A KR 20150028026A KR 102009809 B1 KR102009809 B1 KR 102009809B1
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KR
South Korea
Prior art keywords
back beam
vehicle body
bumper
bumper cover
vehicle
Prior art date
Application number
KR1020150028026A
Other languages
Korean (ko)
Other versions
KR20160105594A (en
Inventor
김동원
길용길
강용한
김희준
Original Assignee
(주)엘지하우시스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by (주)엘지하우시스 filed Critical (주)엘지하우시스
Priority to KR1020150028026A priority Critical patent/KR102009809B1/en
Publication of KR20160105594A publication Critical patent/KR20160105594A/en
Application granted granted Critical
Publication of KR102009809B1 publication Critical patent/KR102009809B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/24—

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Disclosed is a back beam integrated rear bumper. The disclosed invention includes: a bumper cover installed at a rear of a vehicle body and formed to have a length extending along a vehicle width; And a back beam integrally formed with the bumper cover, wherein the back beam includes a back beam main body provided under the bumper cover and integrally formed with the bumper cover; And a vehicle body connecting portion connecting the back beam body portion to the vehicle body.

Description

REAR BUMPER INTEGRATED BACK BEAM}

The present invention relates to a rear beam integrated rear bumper, and more particularly, to a rear beam integrated rear bumper provided to absorb a shock in a vehicle crash accident.

In general, the bumper protects the vehicle body and the functional parts in the event of a collision and at the same time plays a role in preventing damage and improving the design of the vehicle body.

Such bumper performance is required to satisfy the shock requirements of each country's regulations, high rigidity and impact resistance in a wide temperature range, low expansion and contraction with temperature, and good aerodynamic performance. .

Among them, the basic configuration of the rear bumper installed at the rear side of the vehicle includes a bumper cover that covers the entire lower rear portion of the vehicle, and a back beam positioned at the rear of the bumper cover and protecting the vehicle body from external collision. )

And the coupling between the bumper cover and the back beam is made by fastening the steel bracket (Steel bracket) attached by welding to both sides of the back beam and the bumper cover.

Background art of the present invention is disclosed in Korean Unexamined Patent Publication No. 10-2002-0052911 (July 04, 2002, titled the invention: rear bumper for automobiles).

It is an object of the present invention to provide an integrated front bumper that improves design freedom and quality while reducing weight and manufacturing cost.

A rear beam integrated rear bumper according to the present invention includes: a bumper cover installed at a rear of a vehicle body and formed to have a length extending along a vehicle width; And a back beam integrally formed with the bumper cover, wherein the back beam is provided under the bumper cover and is formed integrally with the bumper cover; And a vehicle body connecting portion connecting the back beam body to the vehicle body.

In addition, the back beam main body is preferably inserted into the bumper cover.

The back beam body part may further include a back beam shape part forming a shape of the back beam body part; And a rigid reinforcing portion coupled to the back beam shape portion so as to strengthen the rigidity of the back beam body portion.

In addition, the back beam portion is formed of a material having a better formability than the rigid reinforcing portion; Preferably, the rigid reinforcement part is formed of a material having a higher rigidity than the back beam shape part.

In addition, the rigid reinforcement portion is preferably inserted into the back beam portion is injection molded.

In addition, the vehicle body connection portions are provided at both ends of the longitudinal direction of the back beam body portion, respectively; It is preferable that each of the vehicle body connecting portions is formed to extend toward the vehicle body side and is directly coupled to the panel of the vehicle body.

In addition, the vehicle body connection portion is preferably formed integrally with the back beam body portion.

According to the back beam integrated rear bumper of the present invention, the bumper cover and the back beam are manufactured to be integrally formed, thereby increasing the shape freedom of the back beam, thereby providing an effect of facilitating a design to satisfy the low speed collision performance. .

In addition, the present invention improves the adhesion between the bumper cover and the back beam, while its rigidity is enhanced to prevent bumping of the bumper, and to improve the quality of the bumper's sensitivity, and to reduce rattle noise. Can be.

In addition, the present invention can be installed on the vehicle body without the heavy steel bracket, it is possible to reduce the weight of the rear portion of the vehicle, as well as to reduce the difficulty of installation work and reduce the labor.

1 is a perspective view illustrating a rear beam integrated rear bumper according to an exemplary embodiment of the present invention.
FIG. 2 is an enlarged view of a portion of the back beam integrated rear bumper illustrated in FIG. 1.
3 is a cross-sectional view taken along the line “AA” of FIG. 2.

Hereinafter, an embodiment of a back beam integrated rear bumper according to the present invention will be described with reference to the accompanying drawings. For convenience of description, the thicknesses of the lines and the size of the elements shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view illustrating a back beam integrated rear bumper according to an exemplary embodiment of the present invention, and FIG. 2 is an enlarged view of a portion of the back beam integrated rear bumper illustrated in FIG. 1.

1 and 2, the back beam integrated rear bumper 100 according to the exemplary embodiment of the present invention includes a bumper cover 110 and a back beam 120.

The bumper cover 110 forms the exterior of the back beam integrated rear bumper 100 according to the present embodiment, and is disposed on the rear side of the bumper beam and the back beam 120 so as to be positioned at the rearmost portion of the vehicle body.

The bumper cover 110 as described above is formed to have a length extending along the vehicle width, and may be manufactured by injection molding of a synthetic resin material.

The back beam 120 is provided at the rear side of the bumper cover 110 and absorbs the impact energy while being deformed during the rear collision of the vehicle, and evenly spreads the impact generated during the rear collision of the vehicle over the entire rear of the vehicle body. Function to deliver. The back beam 120 is integrally formed with the bumper cover 110 and includes a back beam main body 121 and a vehicle body connecting portion 125.

The back beam main body 121 is provided at the lower side of the bumper cover 110 and is integrally formed with the bumper cover 110. The back beam body 121 may be integrally formed with the bumper cover 110 by insert injection into the bumper cover 110 during injection molding of the bumper cover 110.

In the present embodiment, the back beam body portion 121 is illustrated as being provided in a form including a back beam shape portion 122 and the rigid reinforcement portion 123.

The back beam shape part 122 is a part forming the shape of the back beam main body part 121 and is formed of a material having excellent moldability than the rigid reinforcing part 123, for example, a material such as TPO (Thermo Plastic Olefin). Can be.

In addition, the rigid reinforcement part 123 is coupled to the back beam shape part 122 so that the rigidity of the back beam main body part 121 is enhanced. The rigid reinforcement part 123 is formed of a material having a higher rigidity than the back beam shape part 122, and is inserted into the back beam shape part 122 when the injection molding of the back beam shape part 122 is performed. Injection molded together with 122.

As an example, the rigid reinforcement unit 123 may be formed of a fiber reinforced composite material such as long fiber reinforced thermoplastic (LFT) material.

Long-fiber reinforced thermoplastic resin is a fine chemical material reinforced with long fiber in plastic material. It has a level of rigidity close to metal, and is cheaper and lighter than metal, and easy to injection molding. There is this.

As another example, the rigid reinforcement unit 123 may be formed of a fiber reinforced composite material such as Continuous Fiber Thermoplastics (CFT) material.

Continuous fiber thermoplastic resin is a composite material in which a reinforcing fiber such as glass island or carbon fiber is continuously embedded in a plastic material, and has excellent mechanical strength, rigidity and impact performance.

The rigid reinforcement part 123 formed of the fiber-reinforced composite material as described above is selectively positioned at a portion where the rigidity of the back beam body part 121 is required in the process of injection molding the back beam shape part 122. By inserting into the back beam portion 122 so as to be injected together with the back beam portion 122, it is possible to effectively improve the rigidity of the portion of the back beam body portion 121 that needs to be rigid.

As described above, the back beam body 121 formed in the form of being inserted into the back beam shape portion 122 by inserting the rigid reinforcement portion 123 has a high rigidity with a light weight and a portion requiring rigidity reinforcement. It can be easily manufactured at low cost while effectively improving the stiffness.

The vehicle body connecting portion 125 is provided to connect the back beam body portion 121 to the rear of the vehicle body, and is integrally formed with the back beam body portion 121. These vehicle body connecting portions 125 are provided at both ends of the longitudinal direction of the back beam body 121.

Each vehicle body connecting portion 125 is formed to extend from both ends of the longitudinal direction of the back beam body portion 121 toward the vehicle body and is directly coupled to the mounting 10 protruding to the rear of the vehicle body.

That is, the back beam 120 of the present embodiment is not installed in the vehicle body of the vehicle in such a manner that the back beam 120 is fastened to the vehicle body by using a separate steel bracket, but through the vehicle body connection part 125 formed integrally with the back beam 120 itself. It may be installed at the rear of the vehicle body in a manner that is directly coupled with the mounting 10 protruding from the vehicle body.

Accordingly, since the back beam 120 can be directly installed on the vehicle body without the heavy steel bracket, not only the weight of the rear portion of the vehicle can be reduced, but also the difficulty of the installation work can be reduced and the work maneuver can be reduced.

3 is a cross-sectional view taken along the line “A-A” of FIG. 2.

Hereinafter, the manufacturing process, operation, and effect of the back beam integrated rear bumper according to the present embodiment will be described with reference to FIGS. 1 to 3.

1 and 2, the rear bumper integrated rear bumper 100 according to the present exemplary embodiment may be manufactured by injection molding the bumper cover 110 to insert the back beam 120. At this time, the back beam 120 is extended to the vehicle body side from the back beam body portion 121 and the back beam body portion 121, which is a portion coupled to the bumper cover 110, that is, a portion inserted into the bumper cover 110. It may be divided into a vehicle body connecting portion 125 that is formed to connect the back beam body portion 121 to the vehicle body.

Among them, the back beam body part 121 includes the back beam body part 122 forming the shape of the back beam body part 121 and the back beam body part 122 so that the rigidity of the back beam body part 121 is enhanced. It can be divided into a rigid reinforcement unit 123 coupled to.

At this time, the back beam shape portion 122 is formed of a high material that is relatively high in strength compared to the rigid reinforcement portion 123 but is light and easy to injection molding, the rigid reinforcement portion 123 is a long fiber reinforced thermoplastic resin or continuous fiber It is formed of a fiber-reinforced composite material with high rigidity such as thermoplastic resin.

In addition, the rigid reinforcement part 123 formed as described above may include a back beam shape part such that the rigidity reinforcement part 123 is selectively positioned at a portion requiring rigidity reinforcement of the back beam body part 121 in the process of injection molding the back beam shape part 122. And inserted into the back beam shape 122.

The back beam main body 121 formed as described above is manufactured by adjusting the formation position of the rigid reinforcement part 123 so that the rigid reinforcement part 123 is selectively positioned at a portion requiring rigidity reinforcement in the insert injection process. And to suppress the increase in weight while having excellent appearance quality and strength.

In the injection process for forming the back beam body portion 121 formed as described above, the molding of the vehicle body connecting portion 125 is also made to be integral with the back beam body portion 121, thereby forming the back beam 120. Is done.

The back beam 120 formed as described above is inserted into the bumper cover 110 so as to be positioned at the position where the back beam 120 is to be coupled on the bumper cover 110 in the process of ejecting the bumper cover 110. By being injected together with the cover 110, it is molded integrally with the bumper cover 110.

When the bumper cover 110 and the back beam 120 are integrally formed as described above, as shown in FIG. 3, the back beam 120 may be coupled to the bumper cover 110 in a state of being completely in close contact.

That is, since the bumper cover 110 and the back beam 120 are integrally formed, the back beam 120 is coupled to the bumper cover 110 in close contact with the bumper cover 110, so that the bumper cover 110 may be determined when determining the appearance of the bumper cover 110. There is no need to provide an assembly tolerance between 110 and the back beam 120.

Accordingly, while maintaining the shape of the bumper cover 110 as before, a space equal to a conventional assembly tolerance, for example, a space of about 5 mm or more can be secured between the back panel and the bumper of the vehicle body. Therefore, the degree of freedom of the shape of the back beam 120 is increased to facilitate the design to satisfy the low-speed collision performance.

In addition, the back beam integrated rear bumper 100 manufactured as described above has no assembly tolerance and thus, adhesion between the bumper cover 110 and the back beam 120 is improved, and the back beam 120 is provided through the rigid reinforcement unit 123. Since the rigidity of) is enhanced to improve its strength, it is possible to prevent bumping of the bumper, to improve the quality of the bumper's sensitivity, and to reduce rattle noise.

Meanwhile, as illustrated in FIGS. 1 and 2, the back beam integrated rear bumper 100 manufactured as described above may be connected to the vehicle body by being coupled with the mounting 10 protruding to the vehicle body through the vehicle body connecting portion 125. have.

Coupling between the vehicle body connecting portion 125 and the mounting 10 may be achieved by fastening the vehicle body connecting portion 125 and the mounting 10 which are butted to each other in the front and rear directions in the front and rear directions using bolts or retainers.

That is, the back beam 120 of the present embodiment is not installed at the rear of the vehicle in a manner of being fastened to the vehicle body by using a separate steel bracket, but through the vehicle body connecting portion 125 formed integrally with the back beam 120 itself. It may be installed at the rear of the vehicle in a manner that is directly coupled to the mounting 10 protruding to the vehicle body.

Accordingly, since the back beam 120 can be installed on the vehicle body without heavy steel brackets, the weight of the rear portion of the vehicle can be reduced, and the difficulty of installation work can be reduced, and the work maneuver can be reduced. .

As described above, the back beam-integrated rear bumper 100 of the present embodiment is manufactured so that the bumper cover 110 and the back beam 120 are integrally formed, thereby increasing the degree of freedom of the shape of the back beam 120 and thus the low speed collision performance. It provides an effect to facilitate the design to satisfy the requirements.

In addition, the back bumper integrated rear bumper 100 of the present embodiment has improved adhesion between the bumper cover 110 and the back beam 120, and its rigidity is enhanced to prevent bumping from occurring. In addition to improving the emotional quality of rattles, it can reduce rattle noise.

In addition, since the back beam integrated rear bumper 100 of the present embodiment can install the back beam 120 on the vehicle body even without a heavy steel bracket, it is possible to reduce the weight of the rear portion of the vehicle and to increase the difficulty of installation work. Can lower the work manpower.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, it is merely exemplary, and various modifications and equivalent other embodiments may be made by those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

100: integrated rear beam rear bumper 110: bumper cover
120: back beam 121: back beam main body
122: back beam shape portion 123: rigid strengthening portion
125: body connection

Claims (7)

A bumper cover installed at the rear of the vehicle body and formed to have a length extending along the vehicle width; And
A back beam integrally formed with the bumper cover, wherein the back beam includes:
A back beam body part provided below the bumper cover and integrally formed with the bumper cover; And
A vehicle body connecting portion connecting the back beam body portion to the vehicle body;
The back beam body portion,
A back beam shape forming a shape of the back beam body; And
And a rigid reinforcement part coupled to the back beam shape part so that the rigidity of the back beam body part is strengthened.
The method of claim 1,
The back beam main body portion is inserted into the bumper cover, the back beam integrated rear bumper.
The method of claim 1,
The back beam shape portion is formed of a material having better moldability than the rigidity reinforcement portion;
The rigid reinforcement unit is a rear beam integrated bumper, characterized in that formed of a material having a higher rigidity than the back beam portion.
The method according to claim 1 or 3,
And the rigid reinforcement part is inserted into the back beam shape part and injection molded.
The method of claim 1,
The vehicle body coupling portions are provided at both ends of the longitudinal direction of the back beam body portion;
Each of the vehicle body connecting portions is formed to extend toward the vehicle body side and is directly coupled to the panel of the vehicle body.
The method of claim 5,
And the vehicle body connection portion is integrally formed with the back beam body portion. delete
KR1020150028026A 2015-02-27 2015-02-27 Rear bumper integrated back beam KR102009809B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150028026A KR102009809B1 (en) 2015-02-27 2015-02-27 Rear bumper integrated back beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150028026A KR102009809B1 (en) 2015-02-27 2015-02-27 Rear bumper integrated back beam

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KR20160105594A KR20160105594A (en) 2016-09-07
KR102009809B1 true KR102009809B1 (en) 2019-08-13

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102125851B1 (en) * 2017-03-15 2020-06-23 (주)엘지하우시스 Bumper back beam and manufacturing method thereof
KR102224431B1 (en) * 2019-10-31 2021-03-08 주식회사 서연이화 Bumper for vehicle using back-beam having composite materials

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100681048B1 (en) * 2005-11-17 2007-02-08 현대자동차주식회사 A front bumper structure in vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100681048B1 (en) * 2005-11-17 2007-02-08 현대자동차주식회사 A front bumper structure in vehicle

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