Lightweight honeycomb structure aluminum alloy anti-collision beam

Abstract

The utility model discloses a lightweight aluminum alloy anti-collision beam with a honeycomb structure, and relates to the field of anti-collision beams, the lightweight aluminum alloy anti-collision beam with the honeycomb structure comprises an anti-collision beam main body, and the anti-collision beam main body is formed by mutually bonding an outer arc layer, a honeycomb core layer and an inner arc layer; according to the lightweight aluminum alloy anti-collision beam with the honeycomb structure, the honeycomb core layer is adopted to replace a traditional thick-wall cavity, the weight is greatly reduced while the structural strength is guaranteed, the lightweight bottleneck of a traditional square structure is broken through, the extending direction of the honeycomb cavity is strictly parallel to the collision direction, it is guaranteed that the honeycomb structure directionally crushes and absorbs energy during collision, and the collision strength is improved. And the energy absorption efficiency is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of anti-collision beams, and in particular to a lightweight honeycomb structure aluminum alloy anti-collision beam. Background Technology

[0002] Traditional crash beams generally employ a U-shaped hollow structure, meaning the opening in the cross-section of the entire crash beam forms a U-shape. This hollow design reduces some weight, but due to limitations in material strength and collision safety requirements, the cavity wall thickness needs to be significantly increased to resist impact deformation. This thick-walled design results in limited weight reduction, making it difficult to balance safety and lightweight requirements. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a lightweight honeycomb structure aluminum alloy anti-collision beam, which solves the problem that traditional anti-collision beams cannot simultaneously meet the requirements of safety and lightweight design.

[0004] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0005] A lightweight honeycomb structure aluminum alloy anti-collision beam includes an anti-collision beam body, which is composed of an outer arc layer, a honeycomb core layer and an inner arc layer bonded together. Both the outer arc layer and the inner arc layer are arranged to protrude in an arc shape to one side of the outer arc layer. Two energy-absorbing boxes are symmetrically fixed on the side of the inner arc layer away from the honeycomb core layer.

[0006] The honeycomb core layer has multiple cavities spaced at equal intervals. The cross-section of each cavity is honeycomb-shaped, and the extension direction of the cavity is the same as the length direction of the energy-absorbing box.

[0007] Optionally, a plurality of collapsible guide grooves are sequentially formed on the energy-absorbing box along the length direction of the energy-absorbing box, and an installation ring is formed on the end of the energy-absorbing box that is away from the inner arc layer and extends outward.

[0008] Optionally, the outer arc layer and the inner arc layer are provided with a plurality of insertion holes at equal intervals on opposite sides, and the honeycomb core layer is provided with a plurality of protrusions at equal intervals on both sides. The protrusions are arranged to surround a cavity, and the inner cavity of the protrusions is connected to the inner cavity of the cavity. The protrusions on both sides are respectively inserted into the insertion holes on the inner arc layer and the outer arc layer.

[0009] Optionally, the honeycomb core layer and the protrusions are integral, the four corners of the inner arc layer and the outer arc layer are all arc-shaped and located on the same side, and there is a cavity between two adjacent protrusions.

[0010] Compared with the prior art, the advantages of this utility model are as follows:

[0011] This invention uses a honeycomb core layer to replace the traditional thick-walled cavity, which significantly reduces weight while ensuring structural strength and breaks through the lightweight bottleneck of the traditional U-shaped structure. The honeycomb cavity extends strictly parallel to the impact direction, ensuring that the honeycomb structure is crushed and absorbs energy in a directional manner during collision, thus significantly improving energy absorption efficiency.

[0012] This invention strengthens the bond between the honeycomb core layer and the inner and outer arc layers through the mechanical interlocking design of the protrusion and the insertion hole, solves the risk of delamination of the arc surface structure, and improves the stability of the entire anti-collision beam structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the collapse guide groove structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the main structure of the anti-collision beam of this utility model.

[0016] Figure 4 For the present utility model Figure 3 Enlarged view of point A.

[0017] Figure 5 This is a schematic diagram showing the location of the insertion hole in this utility model.

[0018] Reference numerals in the attached drawings: 1. Main body of the anti-collision beam; 101. Outer arc layer; 102. Honeycomb core layer; 103. Inner arc layer; 2. Energy absorption box; 201. Collapse guide groove; 3. Mounting ring; 4. Cavity; 5. Insertion hole; 6. Protrusion. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 5This embodiment provides a lightweight honeycomb structure aluminum alloy anti-collision beam, including an anti-collision beam body 1. The anti-collision beam body 1 is composed of an outer arc layer 101, a honeycomb core layer 102, and an inner arc layer 103 bonded together. The anti-collision beam body 1 is made of aluminum alloy material. The four corners of the inner arc layer 103 and the outer arc layer 101 are all arc-shaped, and the outer arc layer 101 and the inner arc layer 103 both protrude arc-shaped to one side of the outer arc layer 101. Two energy-absorbing boxes 2 are symmetrically fixed on the side of the inner arc layer 103 away from the honeycomb core layer 102. The end of the energy-absorbing box 2 away from the inner arc layer 103 extends outward to form an installation ring 3. During installation, the energy-absorbing box 2 is fixed to the vehicle frame by passing bolts through the holes in the installation ring 3, thus completing the installation of the anti-collision beam body 1. After installation, the arc-shaped protrusion direction of the outer arc layer 101 and the inner arc layer 103 faces the front side of the vehicle's driving direction. Multiple collapsible guide grooves 201 are formed sequentially along the length of the energy-absorbing box 2, which are recessed towards the inside of the energy-absorbing box 2. The collapsible guide grooves 201 serve as preset weak points, accurately inducing the energy-absorbing box 2 to fold in an orderly manner along the grooves during collision, avoiding the risk of instability caused by random deformation. Multiple grooves form a progressive collapsible sequence.

[0021] Multiple cavities 4 are evenly spaced on the honeycomb core layer 102. The cross-section of the cavity 4 is honeycomb-shaped. The extension direction of the cavity 4 is the same as the length direction of the energy absorption box 2. The honeycomb core layer 102 replaces the traditional thick-walled cavity 4, which greatly reduces the weight while ensuring the structural strength. The extension direction of the honeycomb cavity 4 is strictly parallel to the impact direction, which ensures that the honeycomb structure is crushed and absorbs energy in a directional manner during the collision, thus significantly improving the energy absorption efficiency.

[0022] Multiple insertion holes 5 are formed at equal intervals on opposite sides of the outer arc layer 101 and the inner arc layer 103. Multiple protrusions 6 are formed at equal intervals on both sides of the honeycomb core layer 102. The protrusions 6 are arranged around a cavity 4, and the inner cavity of the protrusion 6 is connected to the inner cavity of the cavity 4. The protrusions 6 on both sides are respectively inserted into the insertion holes 5 on the inner arc layer 103 and the outer arc layer 101. The honeycomb core layer 102 and the protrusions 6 are integrated and located on the same side. There is a cavity 4 between two adjacent protrusions 6. The precise fitting of the protrusions 6 and the insertion holes 5 forms a three-dimensional mechanical interlock, which greatly increases the adhesive contact area, improves the interface shear strength, and solves the risk of delamination caused by stress concentration in the arc surface structure.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight honeycomb structure aluminum alloy anti-collision beam, comprising an anti-collision beam body (1), characterized in that, The main body (1) of the anti-collision beam is composed of an outer arc layer (101), a honeycomb core layer (102) and an inner arc layer (103) bonded together. The outer arc layer (101) and the inner arc layer (103) are both arc-shaped protrusions to one side of the outer arc layer (101). Two energy-absorbing boxes (2) are symmetrically fixed on the side of the inner arc layer (103) away from the honeycomb core layer (102). The honeycomb core layer (102) has multiple cavities (4) spaced at equal intervals. The cross-section of the cavity (4) is honeycomb-shaped, and the extension direction of the cavity (4) is the same as the length direction of the energy-absorbing box (2).

2. The lightweight honeycomb structure aluminum alloy anti-collision beam according to claim 1, characterized in that, Multiple collapsible guide grooves (201) are sequentially formed on the energy-absorbing box (2) along the length direction of the energy-absorbing box (2), which are recessed into the inside of the energy-absorbing box (2).

3. The lightweight cellular structured aluminum alloy crash can beam of claim 2, wherein, The energy-absorbing box (2) extends outward from the end opposite to the inner arc layer (103) to form an mounting ring (3).

4. The lightweight cellular structured aluminum alloy bumper beam of claim 1, wherein, The outer arc layer (101) and the inner arc layer (103) have multiple insertion holes (5) evenly spaced on opposite sides. The honeycomb core layer (102) has multiple protrusions (6) evenly spaced on both sides. The protrusions (6) are arranged around a cavity (4), and the inner cavity of the protrusions (6) is connected to the inner cavity of the cavity (4). The protrusions (6) on both sides are inserted into the insertion holes (5) on the inner arc layer (103) and the outer arc layer (101), respectively.

5. The lightweight cellular structured aluminum alloy crash can of claim 4, wherein The honeycomb core layer (102) and the protrusion (6) are integral.

6. The lightweight cellular structured aluminum alloy crash can of claim 1, wherein The four corners of the inner arc layer (103) and the outer arc layer (101) are all arc-shaped.

7. The lightweight cellular structured aluminum alloy crash can of claim 5, wherein There is a cavity (4) between two adjacent protrusions (6) located on the same side.

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