KR20240118272A - Bumper beam unit for vehicles - Google Patents

Abstract

A bumper beam unit for a vehicle is disclosed. A bumper beam unit for a vehicle according to an exemplary embodiment of the disclosed invention includes i) a bumper beam disposed along the vehicle width direction, and ii) each coupled to both sides of the bumper beam along the vehicle width direction to secure the bumper beam to the vehicle body. It may include a stay, and iii) a reinforcement member each coupled to both ends of the bumper beam.

Description

BUMPER BEAM UNIT FOR VEHICLES

An embodiment of the present invention relates to a bumper structure for a vehicle, and more specifically, to a bumper beam unit for a vehicle capable of responding to a small overlap collision.

In general, bumpers in vehicles protect the safety of passengers by absorbing the shock when the vehicle collides with another vehicle or a fixed object, and are placed on certain areas of the front and rear of the vehicle to minimize deformation of the vehicle body. It is a buffer unit that is deployed.

The bumper consists of a bumper beam unit with stays mounted on both sides of the rear of the bumper beam arranged in the vehicle width direction at the front and rear of the vehicle and fixed to the side members of the vehicle body, and an energy absorber placed in front of the bumper beam to absorb impact force. , and it consists of a bumper cover that surrounds the bumper beam and energy absorber.

Here, in the above-described conventional bumper beam unit, the bumper beam to be roll-formed avoids interference with the inside of both ends of the bumper cover, and in order to increase the degree of design freedom, the maximum forming curvature limit of the roll-formed bumper beam of the existing high-strength steel plate is limited. It is applied by molding both ends.

However, such a conventional bumper beam does not sufficiently absorb and disperse the collision energy in the event of a small overlap collision (e.g., side or offset) of a vehicle, does not smoothly transfer the collision load to the side member, and is not structurally stable. There are problems such as not being able to do so. This can be a factor that impairs passenger safety in the event of a small overlap collision of vehicles and can act as a factor in aggravating damage to the vehicle.

The matters described in this background art section are written to enhance understanding of the background of the invention, and may include matters that are not prior art already known to those skilled in the art in the field to which this technology belongs.

Embodiments of the present invention provide a bumper beam unit for a vehicle that absorbs, transmits, and disperses the collision load in the event of a small overlap (side or offset) collision of the vehicle, thereby minimizing deformation of the passenger compartment and promoting the safety of passengers. We would like to provide

In an embodiment of the present invention, a bumper beam unit for a vehicle includes: i) a bumper beam disposed along the vehicle width direction, ii) a stay each coupled to both sides of the bumper beam along the vehicle width direction to secure the bumper beam to the vehicle body, iii) It may include a reinforcement member coupled to both ends of the bumper beam, respectively.

Additionally, in the vehicle bumper beam unit according to the embodiment of the present invention, the reinforcing member may be provided with an aluminum extrusion material.

Additionally, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the reinforcement member may be coupled to a surface corresponding to the stay at both ends of the bumper beam.

In addition, the bumper beam unit for a vehicle according to an embodiment of the present invention includes i) a bumper beam bent at a set curvature and disposed along the vehicle width direction, and ii) fixing the bumper beam to a side member disposed along the front and rear direction of the vehicle body. Stays respectively coupled to both sides of the bumper beam along the vehicle width direction, iii) Reinforce members made of aluminum extrusion material and coupled to surfaces corresponding to the stays at both ends of the bumper beam, and iv) Both ends of the bumper beam It may include a fastening means for fastening the reinforcement member.

Additionally, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the stay may be coupled to a mounting plate mounted on the side member.

Additionally, in the bumper beam unit for a vehicle according to an embodiment of the present invention, a blocking protrusion that blocks the reinforcement member may be formed on the mounting plate.

Additionally, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the reinforcement member may include a plurality of ribs formed therein and a plurality of closed sections partitioned by the plurality of ribs. .

In addition, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the reinforcement member is coupled to a surface corresponding to the stay at both ends of the bumper beam, and is formed to protrude in the shape of a node by the plurality of ribs. It may include a plurality of joint parts.

In addition, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the reinforcement member is formed between each of the plurality of joint parts, and is disposed at both ends of the bumper beam to be spaced apart from the surface corresponding to the stay. It may further include a joint reinforcement part.

In addition, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the reinforcement member may be provided in a shape in which the cross-sectional area of the plurality of closed sections gradually becomes smaller as it moves from both ends of the bumper beam to the inside of both ends. .

Additionally, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the reinforcement member may be blocked by the blocking protrusion through a portion with the largest cross-sectional area among the plurality of closed sections.

Additionally, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the fastening means may include a fastening bolt that passes through at least one of the plurality of joint parts and is fastened to both ends of the bumper beam.

Additionally, in the bumper beam unit for a vehicle according to an embodiment of the present invention, the fastening means may further include an adhesive for bonding the plurality of joint portions to both ends of the bumper beam.

Embodiments of the present invention can further improve the small overlap collision performance of a vehicle, minimize deformation and damage to the passenger compartment, and promote the safety of passengers.

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

Embodiments of the present specification may be better understood by referring to the following description in conjunction with the accompanying drawings, where like reference numerals refer to identical or functionally similar elements.
1 is a diagram illustrating a bumper beam unit for a vehicle according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a bumper beam unit for a vehicle according to an embodiment of the present invention.
Figure 3 is a diagram showing a fastening means applied to a bumper beam unit for a vehicle according to an embodiment of the present invention.
Figure 4 is a diagram for explaining the operation of a bumper beam unit for a vehicle according to an embodiment of the present invention.
The drawings referenced above are not necessarily drawn to scale and should be understood as presenting a rather simplified representation of various preferred features illustrating the basic principles of the invention. The specific design features of the invention, including, for example, specific dimensions, orientation, location, and shape, will be determined in part by the particular intended application and usage environment.

The terminology used herein is for the purpose of describing specific embodiments and is not intended to limit the invention. As used herein, the singular forms are intended to also include the plural forms, unless the context clearly dictates otherwise. As used herein, the terms 'comprise' and/or 'comprising' indicate the presence of specified features, integers, steps, operations, elements and/or components, but may also include one or more other features, integers or steps. It should also be understood that this does not exclude the presence or addition of elements, operations, components, and/or groups thereof. As used herein, the term 'and/or' includes any one or all combinations of one or more items listed in association. In this specification, the term 'coupled' refers to two components in which the components are directly connected to each other by welding, SPR (Self Piercing Rivet), FDS (Flow Drill Screw), structural adhesive, etc., or indirectly connected through one or more intermediate components. Displays the physical relationship between components.

As used herein, “vehicle,” “vehicle of,” “automobile,” or other similar terms generally refer to passenger vehicles, including sports cars, sport utility vehicles (SUVs), buses, trucks, and various commercial vehicles. (passenger automobiles), including hybrid vehicles, electric vehicles, hybrid electric vehicles, hydrogen-powered vehicles, Purpose Built Vehicle (PBV) vehicles, and other alternative fuel vehicles (e.g., vehicles powered by sources other than oil). derived fuel).

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a diagram showing a bumper beam unit for a vehicle according to an embodiment of the present invention, and Figure 2 is an exploded perspective view showing a bumper beam unit for a vehicle according to an embodiment of the present invention.

Referring to Figures 1 and 2, the bumper beam unit 100 for a vehicle according to an embodiment of the present invention can be applied to the front body structure of a vehicle.

The bumper beam unit 100 for a vehicle according to an embodiment of the present invention effectively absorbs, transmits, and distributes the collision load in the event of a small overlap (lateral or offset) collision with another vehicle or fixture, while minimizing deformation of the passenger compartment. , is designed to ensure the safety of passengers.

In this specification, the reference directions for explaining the following components are based on the vehicle body, including the front and rear direction (e.g., longitudinal or longitudinal direction of the vehicle body), the vehicle width direction (e.g., lateral direction or left-right direction), and the vertical direction (e.g., e.g., height direction) can be set.

In this specification, the 'top', 'top', 'top' or 'top surface' of a component refers to the end, portion, edge, or face of the component that is relatively on the upper side in the drawing, and the 'bottom' of the component ', 'bottom', 'bottom' or 'lower surface' refers to the end, portion, edge, or face of a component that is relatively lower in the drawing.

Additionally, in this specification, the end of the component (e.g., one end, the other end, or both ends, etc.) refers to the end of the component in any one direction, and the end of the component (e.g., one end, the other end, etc.) refers to the end of the component in any one direction. one end, both ends, front end, or rear end, etc.) represents a portion of the component containing that end.

The bumper beam unit 100 for a vehicle according to an embodiment of the present invention basically includes a bumper beam 10, a stay 30, a reinforcement member 50, and a fastening means 80 (see FIG. 3). It is composed as follows, and each configuration is explained as follows.

In an embodiment of the present invention, the bumper beam 10 is disposed along the vehicle width direction at the front of the vehicle body. The bumper beam 10 may be formed using a roll forming method well known to those skilled in the art.

This bumper beam 10 is bent to a set curvature and may be provided in a closed cross-sectional shape.

In an embodiment of the present invention, the stay (30) (also commonly referred to as a 'crush box' in the industry) is configured to secure the bumper beam (10) to the front of the vehicle body. In addition, the stay (30) also functions to transmit the collision load applied to the bumper beam (10) to the vehicle body.

The stay 30 is provided in the form of a square box, is coupled to the side members 1 arranged along the front-to-rear direction of the vehicle body on both sides along the vehicle width direction at the front of the vehicle body, and is arranged along the front-to-back direction of the vehicle body.

The stays 30 are respectively coupled to both sides of the bumper beam 10 along the vehicle width direction. That is, the stays 30 are respectively coupled to both sides of the bumper beam 10 through the front part and to the side members 1 through the rear part.

Here, the stay 30 may be coupled to the mounting plate 31 mounted on the front part of the side member 1. Furthermore, a blocking protrusion 33 is formed on the mounting plate 31 to block the reinforcement member 50, which will be explained further later.

In an embodiment of the present invention, the reinforcement member 50 is designed to buffer the impact force applied to the bumper beam 10 in the event of a small overlap collision of a vehicle.

Furthermore, the reinforcement member 50 absorbs collision energy through the bumper beam 10 and easily distributes and transmits the collision load to the side member 1 through the stay 30.

The reinforcement member 50 is coupled to both ends of the bumper beam 10, respectively. The reinforcement member 50 may be coupled to a surface corresponding to the stay 30 at both ends of the bumper beam 10. That is, the reinforcement member 50 is disposed along the bending direction of the bumper beam 10 and may be coupled to the rear surfaces of both ends of the bumper beam 10. In one example, the reinforcement member 50 may be made of an aluminum extrusion material manufactured by an aluminum material extrusion method.

Furthermore, the reinforcement member 50 includes a plurality of ribs 51 integrally formed at a set interval therein, and a plurality of closed sections 53 partitioned by the plurality of ribs 51. I'm doing it.

Here, the reinforcement member 50 may be provided in a shape in which the cross-sectional area of the plurality of closed sections 53 gradually becomes smaller as it moves from both ends of the bumper beam 10 to the inside of both ends.

This reinforcement member 50 may be blocked by the blocking protrusion 33 of the mounting plate 31 mentioned above by both ends of the bumper beam 10 that is deformed to the rear of the vehicle body in the event of a small overlap collision of the vehicle. .

Furthermore, the reinforcement member 50 may be blocked by the blocking protrusion 33 through a portion with the largest cross-sectional area among the plurality of closed sections 53 during a small overlap collision of a vehicle.

In an embodiment of the present invention, the reinforcement member 50 includes a plurality of joint parts 61 integrally connected and a joint reinforcement part 71.

The plurality of joint parts 61 are parts coupled to the surface corresponding to the stay 30 at both ends of the bumper beam 10, that is, the rear surface of both ends of the bumper beam 10, and are connected to a plurality of ribs 51. It is formed protruding in the form of a node.

Here, the plurality of joint portions 61 are formed on a surface corresponding to the rear surface of the bumper beam 10, and a plurality of closed sections 53 whose cross-sectional area gradually decreases toward the inside of both ends of the bumper beam 10. It protrudes from the side, and may be provided in a flat shape extending from the portion with the smallest cross-sectional area among the plurality of closed sections 53.

In addition, the joint reinforcement portion 71 is designed to reinforce the rigidity of the plurality of joint portions 61. The joint reinforcement portions 71 are formed between the plurality of joint portions 61 and are spaced apart from the rear surfaces of both ends of the bumper beam 10.

Figure 3 is a diagram showing a fastening means applied to a bumper beam unit for a vehicle according to an embodiment of the present invention.

Referring to FIGS. 1 to 3 , in an embodiment of the present invention, the fastening means 80 is configured to fasten (e.g., combine) both ends of the bumper beam 10 and the reinforcement member 50.

The fastening means 80 includes a fastening bolt 81 and an adhesive 83. The fastening bolt 81 may pass through at least one of the plurality of joint parts 61 and be fastened to both ends of the bumper beam 10.

Here, the fastening bolt 81 may pass through a portion formed in a flat shape among the plurality of joint portions 61 and be fastened to both ends of the bumper beam 10.

In addition, the adhesive 83 is designed to bond the plurality of joint portions 61 and both ends of the bumper beam 10. The adhesive 83 is provided as a structural adhesive and can be applied to a plurality of joint portions 61. Accordingly, the plurality of joint portions 61 may be joined (eg, adhered) to the rear surface of both ends of the bumper beam 10 by the adhesive 83.

Hereinafter, the operation of the bumper beam unit 100 for a vehicle according to an embodiment of the present invention configured as described above will be described in detail with reference to FIGS. 1 to 3 and the attached FIG. 4.

Figure 4 is a diagram for explaining the operation of a bumper beam unit for a vehicle according to an embodiment of the present invention.

Referring to FIGS. 1 to 4, first, in an embodiment of the present invention, a reinforcer is manufactured by an extrusion method of aluminum material and has a plurality of closed sections 53 partitioned therein by a plurality of ribs 51. Members 50 are provided.

Here, the reinforcement member 50 includes a plurality of ribs 51 integrally formed at a set interval therein, and a plurality of closed sections 53 partitioned by the plurality of ribs 51. and includes a plurality of joint parts 61 and a joint reinforcement part 71. In addition, the reinforcement member 50 is provided in a shape in which the cross-sectional area of the plurality of closed sections 53 gradually becomes smaller as it moves from both ends of the bumper beam 10 to the inside of both ends.

Such reinforcement members 50 are respectively fastened to the rear surfaces of both ends of the bumper beam 10 by fastening means 80. The fastening bolt 81 of the fastening means 80 may be fastened to a portion formed in a flat plate shape among the plurality of joint portions 61 and both ends of the bumper beam 10.

In addition, the plurality of joint parts 61 of the reinforcement member 50 are joined to the rear surface of both ends of the bumper beam 10 by adhesive 83.

Therefore, according to the vehicle bumper beam unit (100) according to the embodiment of the present invention, when a small overlap (lateral or offset) collision occurs with another vehicle or a fixed body, as shown in FIG. 4, both ends of the bumper beam (10) are deformed toward the rear of the vehicle body due to the impact force.

Accordingly, since the reinforcement member 50 is coupled to the rear surface of both ends of the bumper beam 10, the blocking protrusion 33 of the mounting plate 31 is formed by both ends of the bumper beam 10 that are deformed to the rear of the vehicle body. is blocked.

Accordingly, according to the bumper beam unit 100 for a vehicle according to an embodiment of the present invention, in the event of a small overlap collision of a vehicle, collision energy is absorbed through the bumper beam 10, and the collision load is transmitted through the side member through the stay 30. (1), it is possible to form a load path that smoothly distributes and delivers.

According to the bumper beam unit 100 for a vehicle according to an embodiment of the present invention as described so far, the small overlap collision performance of the vehicle can be further improved, deformation and damage of the passenger compartment can be minimized, and passenger safety can be achieved. can be promoted.

Furthermore, according to the bumper beam unit 100 for a vehicle according to an embodiment of the present invention, the reinforcement member 50 is connected to the bumper beam 10 through the fastening bolt 81 and the adhesive 83 of the fastening means 80. By combining both ends of the , the coupling rigidity and connection robustness of the reinforcement member 50 can be secured.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be easily modified by a person skilled in the art from the embodiments of the present invention to provide equivalent equivalents. Includes all changes within the scope deemed acceptable.

1: Side member 10: Bumper beam
11, 53: Closed section 30: Stay
31: Mounting plate 33: Blocking protrusion
50: Rainforce member 51: Liv
61: joint part 71: joint reinforcement part
80: fastening means 81: fastening bolt
83: Adhesive 100: Bumper beam unit for vehicle

Claims (12)

Bumper beam disposed along the vehicle width direction;
Stays coupled to both sides of the bumper beam along the vehicle width direction to secure the bumper beam to the vehicle body; and
Reinforce members each coupled to both ends of the bumper beam;
A bumper beam unit for a vehicle including a. According to claim 1,
The reinforcement member is a bumper beam unit for a vehicle provided with an aluminum extrusion material. According to claim 1,
The Rainforce members are:
A bumper beam unit for a vehicle coupled to a surface corresponding to the stay at both ends of the bumper beam. Bumper beam bent at a set curvature and placed along the vehicle width direction;
Stays respectively coupled to both sides of the bumper beam along the vehicle width direction to secure the bumper beam to side members disposed along the front and rear direction of the vehicle body;
A reinforcement member made of aluminum extrusion material and coupled to a surface corresponding to the stay at both ends of the bumper beam; and
Fastening means for fastening both ends of the bumper beam and the reinforcement member;
A bumper beam unit for a vehicle including a. According to clause 4,
The stay is coupled to a mounting plate mounted on the side member,
A bumper beam unit for a vehicle in which a blocking protrusion for blocking the reinforcement member is formed on the mounting plate. According to clause 5,
The Rainforce members are:
A plurality of ribs formed inside, and a plurality of closed sections divided by the plurality of ribs
A bumper beam unit for a vehicle including a. According to clause 6,
The Rainforce members are:
A plurality of joint parts coupled to a surface corresponding to the stay at both ends of the bumper beam and protruding in a node shape by the plurality of ribs.
A bumper beam unit for a vehicle including a. According to clause 7,
The Rainforce members are:
A joint reinforcement portion formed between the plurality of joint portions and spaced apart from a surface corresponding to the stay at both ends of the bumper beam.
A bumper beam unit for a vehicle further comprising: According to clause 7,
The Rainforce members are:
A bumper beam unit for a vehicle, wherein the cross-sectional areas of the plurality of closed sections gradually become smaller as they move from both ends of the bumper beam to the inside of both ends. According to clause 9,
The Rainforce members are:
A bumper beam unit for a vehicle that is blocked by the blocking protrusion through a portion with the largest cross-sectional area among the plurality of closed sections. According to clause 7,
The fastening means is,
A fastening bolt that passes through at least one of the plurality of joint parts and is fastened to both ends of the bumper beam.
A bumper beam unit for a vehicle including a. According to claim 11,
The fastening means is,
A bumper beam unit for a vehicle further comprising an adhesive for bonding the plurality of joint portions to both ends of the bumper beam.

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