CN220220653U - Energy-absorbing structure of anti-collision beam, anti-collision beam and vehicle - Google Patents

Abstract

The utility model provides an anti-collision beam energy absorption structure, which comprises an inner plate and an energy absorption piece; the inner plate is fixedly connected to the side wall of the anti-collision beam, which faces the bumper; the energy absorber is provided with a fixed end and a suspension end opposite to the fixed end, the fixed end is connected with the inner plate, and the suspension end extends towards the direction close to the bumper; the energy absorbing piece is an extruded aluminum molding piece with a hollow structure; the inner part of the energy absorber is divided into a plurality of energy absorbing cavities based on at least one transverse rib and/or at least one vertical rib; the inner plate is detachably connected with the anti-collision beam through a plurality of connecting points. According to the anti-collision beam energy-absorbing structure, the extruded aluminum forming piece is used as the energy-absorbing piece, so that the overall weight of the structure can be reduced, the lightweight index of a vehicle is promoted, the energy-absorbing effect of low-custom collision is improved, and the inner plate and the rear anti-collision beam are connected in a multi-point detachable mode, so that the energy-absorbing structure is convenient to detach and replace independently, and the maintenance cost is reduced.

Description

Energy-absorbing structure of anti-collision beam, anti-collision beam and vehicle

Technical Field

The utility model belongs to the technical field of anti-collision beams, and particularly relates to an anti-collision beam energy absorption structure, an anti-collision beam and a vehicle.

Background

An impact beam is an important safety component disposed inside a vehicle bumper, which is in direct contact with an impacting object and transfers impact energy to the impact beam when the vehicle collides, and reduces impact to a body portion of a vehicle body by absorbing energy by deformation of the impact beam.

Generally, two ends of an anti-collision beam are respectively provided with an energy absorption box for absorbing collision energy, the energy absorption boxes are generally steel plate welding component structures and are fixed on the anti-collision beam in a welding mode, the structural mode has the defects that the structural weight is large, the light weight index of a vehicle is not easy to achieve, the steel plate welding components are difficult to balance between the collapse energy absorption performance and the structural rigidity, and particularly, the protection effect on a main body structure of the vehicle body is poor under the condition of low-speed collision accidents.

Disclosure of Invention

The embodiment of the utility model provides an anti-collision beam energy-absorbing structure, which aims to solve the problems of high weight and poor low-speed collision energy-absorbing effect of the anti-collision beam energy-absorbing structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: in a first aspect, an energy absorbing structure of an anti-collision beam is provided, comprising an inner plate and an energy absorbing piece; the inner plate is fixedly connected to the side wall of the anti-collision beam, which faces the bumper; the energy absorber is provided with a fixed end and a suspension end opposite to the fixed end, the fixed end is connected with the inner plate, and the suspension end extends towards the direction close to the bumper; the energy absorbing piece is an extruded aluminum molding piece with a hollow structure.

With reference to the first aspect, in a possible implementation manner, the inner portion of the energy absorbing member is divided to form a plurality of energy absorbing cavities based on at least one transverse rib and/or at least one vertical rib.

In some embodiments, the inner plate is provided with a lightening hole at least in a middle area thereof, and the fixed end is fixedly connected with the plate surface area of the inner plate around the lightening hole.

Illustratively, the inner panel is detachably connected to the impact beam via a plurality of connection points.

The transverse two ends of the inner plate are respectively fixed with the beam body end part and the beam end extension plate of the anti-collision beam, and at least one connecting point is arranged between the inner plate and the beam body end part and between the inner plate and the beam end extension plate; and an avoidance groove is formed in the middle area of the inner plate and aligned with a welding bead between the end part of the beam body and the beam end epitaxial plate.

Further, at least two first connecting holes are formed in the plate surface area where the inner plate and the beam body end are fixed, at least one first connecting hole is a strip hole, and at least two second connecting holes are formed in the plate surface area where the inner plate and the beam end epitaxial plate are fixed; wherein each first connection hole and each second connection hole form a connection point.

With reference to the first aspect, in one possible implementation manner, the suspension end is fixedly connected with a sealing plate; the sealing plate is provided with a reinforcing rib, and the reinforcing rib protrudes towards the bumper to the plate surface of the sealing plate.

In some embodiments, the inner plate and the sealing plate are both aluminum alloy stamped and formed pieces.

The anti-collision beam energy absorbing structure provided by the utility model has the beneficial effects that: compared with the prior art, the anti-collision beam energy-absorbing structure adopts the extruded aluminum forming piece as the energy-absorbing piece to absorb collision energy, so that certain structural rigidity can be ensured, good energy-absorbing effect can be ensured, balance design between collapse energy-absorbing property and rigidity can be easily realized, and particularly, the energy-absorbing effect can be improved for the low-speed collision condition, and the damage of a vehicle body is reduced; based on the light material property and the hollow structural characteristic of the extruded aluminum forming part, compared with a mode of adopting a steel plate assembly welding structure to form the energy absorption box, the weight can be obviously reduced, and therefore the lightweight index of the vehicle is facilitated to be realized.

In a second aspect, an embodiment of the present utility model further provides an impact beam, including the impact beam energy absorbing structure described above.

The anti-collision beam provided by the embodiment of the utility model has the beneficial effects that: compared with the prior art, the anti-collision beam energy absorbing structure has the advantages that the extruded aluminum forming piece of the hollow structure is used as the energy absorbing piece, the overall weight of the structure can be reduced, and the weight of a vehicle is promoted.

In a third aspect, an embodiment of the present utility model further provides a vehicle, including the above-mentioned impact beam. Compared with the prior art, the vehicle provided by the embodiment of the utility model adopts the anti-collision beam with the anti-collision beam energy absorbing structure, and the extruded aluminum forming piece with the hollow structure is used as the energy absorbing piece, so that the overall weight of the structure can be reduced, and the weight reduction of the vehicle is promoted.

Drawings

FIG. 1 is a schematic perspective view of an energy absorbing structure of an anti-collision beam according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an explosion structure of an energy absorbing structure of an anti-collision beam according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an installation structure of an energy absorbing structure of an anti-collision beam on an anti-collision beam according to an embodiment of the present utility model.

In the figure: 10. an inner plate; 101. a lightening hole; 102. an avoidance groove; 11. a first connection hole; 12. a second connection hole; 20. an energy absorbing member; 201. a fixed end; 202. a suspension end; 21. transverse ribs; 22. vertical ribs; 23. an energy absorption cavity; 24. positioning the connecting groove; 30. a sealing plate; 31. reinforcing ribs; 40. an anti-collision beam; 41. a beam body end; 42. a beam end extension plate; 43. welding; 50. and a bumper.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present utility model. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" or "a number" means two or more, unless specifically defined otherwise. It should be understood that the description of "lateral" is to be understood as an extension direction of the impact beam, and the description of "vertical" is to be understood as a height direction of the vehicle body.

Referring to fig. 1 to 3, an energy absorbing structure of an anti-collision beam according to the present utility model will now be described. The anti-collision beam energy absorbing structure comprises an inner plate 10 and an energy absorbing piece 20; the inner panel 10 is fixedly connected to the side wall of the impact beam 40 facing the bumper 50; the energy absorber 20 has a fixed end 201 and a suspension end 202 opposite to the fixed end 201, the fixed end 201 is connected with the inner panel 10, and the suspension end 202 extends toward a direction approaching the bumper 50; wherein, the energy absorbing member 20 is an extruded aluminum molding member of a hollow structure.

It should be noted that, the energy absorbing structure of the anti-collision beam provided in this embodiment may be used alone or in combination, and preferably, one energy absorbing structure of the anti-collision beam may be disposed at each of two ends of the anti-collision beam 40; the bumper beam 40 in the present embodiment may be the front bumper beam 40 of the vehicle or the rear bumper beam 40 of the vehicle, and may be used on the side bumper beam 40 if the vehicle has the side bumper beam 40 in a special case.

In addition, the suspension end 202 of the energy absorber 20 in this embodiment is not in contact with the surrounding member as the name implies, and of course, the surrounding member is mainly the bumper 50, and a gap of fifteen millimeters or more exists between the suspension end 202 and the bumper 50, so that abnormal sound generated due to interference between the suspension end 202 and the bumper 50 during jolt vibration of the vehicle can be avoided.

In this embodiment, the energy absorbing member 20 is an extruded aluminum molding member, and the weight of the aluminum profile has great advantages in weight compared with the steel sheet metal part or the steel sheet welding assembly under the same volume, at least sixty percent of weight can be reduced; the extruded aluminum profile is then formed into a wire structure based on its molding process, i.e., the shape of any cross section in the extrusion direction is uniform, thus easily controlling the balance design between its structural rigidity and the crush energy absorbing effect.

Compared with the prior art, the anti-collision beam energy absorbing structure provided by the embodiment adopts the extruded aluminum forming piece as the energy absorbing piece 20 to absorb collision energy, so that certain structural rigidity can be ensured, good energy absorbing effect can be ensured, balance design between collapse energy absorbing performance and rigidity can be easily realized, especially, the energy absorbing effect can be improved aiming at the low-speed collision condition, and the damage of a vehicle body is reduced; based on the light material property and the hollow structural characteristic of the extruded aluminum forming part, the weight can be obviously reduced compared with a mode of forming the energy absorption box by adopting a steel plate welding assembly, thereby being beneficial to realizing the light weight index of the vehicle.

In some embodiments, referring to FIG. 2, the interior of energy absorber 20 is divided to form a plurality of energy absorbing cavities 23 based on at least one transverse rib 21 and/or at least one vertical rib 22. The transverse ribs 21 and the vertical ribs 22 inside the extrusion molding process are directly integrally molded, and post processing is not needed, so that the extrusion molding process has the advantage of cost control; the transverse ribs 21 and the vertical ribs 22 inside the energy absorbing piece 20 can collapse into the energy absorbing cavity 23 to absorb energy during low-speed collision, so that collision energy transmitted to the frame through the anti-collision beam 40 is reduced or even eliminated, and collision damage to the vehicle body is reduced.

Specifically, in this embodiment, the energy absorbing member 20 may be separated by one or more transverse ribs 21 and may also be separated by one or more vertical ribs 22, and of course, it is preferable to use a mode of combining the transverse ribs 21 and the vertical ribs 22 to make the energy absorbing member 20 internally form a grid, a cross grid or other grid type distributed structure, which not only can have an energy absorbing effect, but also can ensure that the energy absorbing member itself has a certain structural rigidity and reduce the risks of shaking and abnormal noise.

Referring to fig. 2, in some embodiments, the inner plate 10 is provided with a lightening hole 101 at least in a middle area thereof, and the fixing end 201 is fixedly connected to a plate surface area of the inner plate 10 around the lightening hole 101. Because the energy absorbing member 20 is of a hollow structure, it is actually equivalent to a tube or a sleeve, and the area of the lightening hole 101 formed in the inner plate 10 should be smaller than the internal cross-sectional area of the energy absorbing member 20, so that the fixed end 201 of the energy absorbing member 20 is equivalent to surrounding the lightening hole 101, then the fixed end 201 and the inner plate 10 can be fixed by welding, the fixed end 201 has a structural reinforcing effect on the area surrounding the lightening hole 101, thus the inner plate 10 is lightened under the condition that the structural rigidity of the inner plate is not affected basically, and the light weight index is improved.

In addition, it should be understood that the lightening holes 101 can also generate gaps between the energy absorbing member 20 (the inner transverse ribs 21 and the vertical ribs 22) and the impact beam 40, and when the vehicle collides, the energy absorbing member 20 can also collapse and deform, and meanwhile, the inner ribs can also be sunken into the lightening holes 101 to buffer a part of energy, so that the energy absorbing effect is improved.

In some possible implementations, referring to fig. 1-3, the inner panel 10 is detachably connected with the impact beam 40 through a plurality of connection points. Specifically, the inner plate 10 and the anti-collision beam 40 can be detachably connected in multiple points by using a plurality of bolts distributed in an array or a non-array for screw connection and fixation, and the mode of multiple points connection can enable the whole anti-collision beam energy absorption structure to follow up the anti-collision beam 40, so that the shaking caused by the severe movement of the vehicle is avoided, and the abnormal sound risk is reduced; under the condition of low-speed collision, the energy absorbing piece 20 directly collapses and deforms to absorb collision energy, and the main structure of the anti-collision beam 40 cannot be influenced at the moment, so that the energy absorbing structure can be replaced only by disassembling each connecting point between the inner plate 10 and the anti-collision beam 40 during later maintenance, and the main structure of the anti-collision beam 40 is not required to be disassembled and corrected, thereby reducing maintenance difficulty and cost.

Specifically, in some embodiments, referring to fig. 3, the two lateral ends of the inner panel 10 are respectively fixed to the beam end 41 and the beam end extension plate 42 of the impact beam 40, and at least one connection point is formed between the inner panel 10 and each of the beam end 41 and the beam end extension plate 42; the intermediate region of the inner panel 10 is provided with a relief groove 102, the relief groove 102 being aligned with the weld bead 43 between the beam end 41 and the beam end extension 42.

It should be understood that, in the general case, the beam end extension plates 42 fixed to the peripheral members such as the frame rail are welded to the two end portions of the beam body of the anti-collision beam 40, and since the welding beads 43 are protruded at the connection positions of the beam end portions 41 and the beam end extension plates 42, the avoidance grooves 102 are formed in the middle of the inner plate 10 to accommodate the welding beads 43, so that the connection stability between the inner plate 10 and the beam end portions 41 and the beam end extension plates 42 is ensured, and the shaking and abnormal noise risks of the energy absorbing members 20 are reduced; in addition, the two ends of the inner plate 10 are respectively connected with the beam body end 41 and the beam end extension plate 42, so that the connection stability between the beam end extension plate 42 and the beam body end 41 can be improved, and the abnormal sound risk of the structure of the anti-collision beam 40 is reduced.

Specifically, since the presence of the relief groove 102 necessarily makes the inner plate 10 have a structure that is curved and convex toward the suspension end 202, the fixed end 201 of the energy absorber 20 in this embodiment is provided with the positioning connection groove 24 adapted to the structure of the curved and convex. By providing the positioning connecting groove 24, on one hand, the difficulty in connection alignment between the energy absorbing piece 20 and the inner plate 10 can be reduced, and on the other hand, dislocation caused by connection failure due to overlarge transverse load born on the connection position of the fixed end 201 and the inner plate 10 when the energy absorbing piece 20 is impacted can be avoided, so that the structural stability is improved.

On the basis of the above, referring to fig. 2 and 3, at least two first connecting holes 11 are provided in the plate surface area where the inner plate 10 is fixed to the beam body end 41, and at least one first connecting hole 11 is a long strip hole, and at least two second connecting holes 12 are provided in the plate surface area where the inner plate 10 is fixed to the beam end extension plate 42; wherein each first connection hole 11 and each second connection hole 12 form a connection point.

The two lateral side areas of the inner plate 10 are connected through at least two connecting holes, so that multi-point (at least four-point) connection between the inner plate 10 and the anti-collision beam 40 is realized, the connection stability between the inner plate 10 and the anti-collision beam 40 can be improved, shake caused by severe movement of a vehicle is avoided, and abnormal sound risks are reduced; in addition, at least one long strip hole is arranged in the first connecting hole 11, so that the problem of uneven connecting hole positions between the inner plate 10 and the anti-collision beam 40 due to machining position errors can be avoided, the connecting difficulty and the machining precision requirement are reduced, the cost is saved, and the maintenance economy is improved.

It should be noted that, referring to fig. 1 and 3, in some embodiments, a sealing plate 30 is fixedly connected to the suspension end 202 of the energy absorbing member 20. Meanwhile, in order to improve the structural strength of the sealing plate 30, the sealing plate 30 is provided with reinforcing ribs 31, and the reinforcing ribs 31 protrude from the plate surface of the sealing plate 30 towards the bumper 50.

Since the suspension end 202 of the energy absorber 20 is not a closed plane, if the suspension end 202 directly collides with the bumper 50 to transfer collision energy during collision, a large collision injury is caused to the bumper 50, and the suspension end 202 is connected to the sealing plate 30 to form a closed end face to collide with the bumper 50, so that a large contact area can be formed between the suspension end 202 and the bumper 50, and damage to the bumper 50 is reduced; in addition, by providing the sealing plate 30 to close the suspension end 202, the structural rigidity of the suspension end 202 can be improved, so that the energy absorber 20 is integrally collapsed in the extending direction thereof when receiving the impact force as much as possible, thereby improving the energy absorbing effect.

In order to further achieve weight reduction and promote weight reduction of the vehicle, the inner panel 10 and the seal plate 30 are aluminum alloy press-formed members in some embodiments. Besides weight reduction, the aluminum alloy stamping forming piece can be welded and fixed with the energy absorbing piece 20 which is also made of aluminum conveniently, so that the processing difficulty is reduced and the connection reliability is improved.

Based on the same inventive concept, as will be appreciated in conjunction with fig. 1 to 3, the embodiments of the present application further provide an anti-collision beam, including the above-mentioned anti-collision beam energy absorbing structure.

Compared with the prior art, the anti-collision beam energy absorbing structure provided by the embodiment of the utility model adopts the extruded aluminum forming piece as the energy absorbing piece 20, so that the overall weight of the structure can be reduced, and the weight reduction of a vehicle is promoted.

Based on the same inventive concept, the embodiment of the application also provides a vehicle, which comprises the anti-collision beam.

The vehicle provided in this embodiment adopts the anti-collision beam 40 having the anti-collision beam energy absorbing structure, and the extruded aluminum molding member with a hollow structure is used as the energy absorbing member 20, so that the overall weight of the structure can be reduced, and the weight reduction of the vehicle can be promoted.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. Anti-collision beam energy-absorbing structure, its characterized in that includes:

an inner plate (10) fixedly connected to the side wall of the impact beam (40) facing the bumper (50);

an energy absorber (20) having a fixed end (201) and a suspended end (202) opposite to the fixed end (201), the fixed end (201) being connected to the inner panel (10), the suspended end (202) extending in a direction approaching the bumper (50);

wherein the energy absorbing piece (20) is an extruded aluminum molding piece with a hollow structure.

2. An impact beam energy absorbing structure according to claim 1, characterized in that the interior of the energy absorbing member (20) is divided to form a plurality of energy absorbing cavities (23) based on at least one transverse rib (21) and/or at least one vertical rib (22).

3. The beam energy absorbing structure of claim 1, wherein the inner plate (10) is provided with a lightening hole (101) at least in a middle area thereof, and the fixed end (201) is fixedly connected with a plate area of the inner plate (10) around the lightening hole (101).

4. The impact beam energy absorbing structure of claim 1, wherein the inner panel (10) and the impact beam (40) are detachably connected by a plurality of connection points.

5. The impact beam energy absorbing structure of claim 4, wherein the inner plate (10) is fixed at both lateral ends thereof to a beam body end (41) and a beam end extension plate (42) of the impact beam (40), respectively, and wherein at least one of the connection points is provided between the inner plate (10) and each of the beam body end (41) and the beam end extension plate (42); an avoidance groove (102) is formed in the middle area of the inner plate (10), and the avoidance groove (102) is aligned with a welding bead (43) between the beam body end (41) and the beam end extension plate (42).

6. The anti-collision beam energy absorbing structure according to claim 5, wherein at least two first connecting holes (11) are arranged in a plate surface area where the inner plate (10) and the beam body end (41) are fixed, at least one first connecting hole (11) is a strip hole, and at least two second connecting holes (12) are arranged in a plate surface area where the inner plate (10) and the beam end extension plate (42) are fixed; wherein each of the first connection holes (11) and each of the second connection holes (12) form one of the connection points.

7. The impact beam energy absorbing structure according to any one of claims 1-6, wherein the suspension end (202) is fixedly connected with a closing plate (30); the sealing plate (30) is provided with a reinforcing rib (31), and the reinforcing rib (31) protrudes towards the bumper (50) to the plate surface of the sealing plate (30).

8. The impact beam energy absorbing structure of claim 7, wherein the inner plate (10) and the sealing plate (30) are both aluminum alloy stamped and formed parts.

9. An impact beam comprising an impact beam energy absorbing structure according to any one of claims 1-8.

10. A vehicle comprising an impact beam as claimed in claim 9.