Automobile anti-collision beam

Abstract

The utility model discloses an automobile anti -collision beam relates to the technical field of automobile parts, including the beam body, the left and right sides of the back of beam body all fixedly installed have the energy -absorbing box, the front of beam body is fixedly installed with energy -absorbing beam through bolt, the inside of beam body is provided with three cavities, three the cavity is from top to bottom in proper order respectively is upper chamber, middle chamber and lower chamber, the inside of upper chamber with lower chamber all fixedly installed has the inclined plate of inclination. This kind of utility model has triple energy -absorbing structure energy -absorbing beam as first level, the beam body as second level, energy -absorbing box as third level, can activate in proper order when being hit, thereby greatly optimized energy dissipation path, improved overall energy -absorbing efficiency, can more effectively protect the passenger cabin safety, and the energy -absorbing beam of the utility model is an independent, quick -replaceable component, when low -speed collision occurs, only need to replace the energy -absorbing beam that occurs deformation, and the main beam body and energy -absorbing box assembly of higher price can be retained.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an automotive anti-collision beam. Background Technology

[0002] Car crash beams are an important component of a vehicle's passive safety system. They are typically installed at the front and rear of the vehicle body to absorb and disperse impact energy during low-speed collisions, reducing damage to the vehicle's longitudinal beams and passenger compartment, ensuring the safety of occupants, and lowering maintenance costs.

[0003] Existing automotive crash beams mostly employ a single crossbeam combined with energy-absorbing boxes on both sides. The crossbeam is typically made of high-strength steel or aluminum alloy, with a single or multi-layered cavity structure. Its main function is to resist bending and transfer the impact force to the energy-absorbing boxes on both sides; the energy-absorbing boxes absorb most of the impact energy through their axial crushing deformation. While this structure provides some protection, it still has the following shortcomings:

[0004] First, traditional anti-collision beams are typically designed as rigid supports, with limited energy absorption capacity. In a collision, especially in the initial stages of a low-speed collision, the impact energy cannot be absorbed in a timely and sufficient manner, causing the peak impact force to be transferred to the energy-absorbing box and the vehicle body prematurely. This can lead to premature instability or non-ideal collapse of the energy-absorbing box, reducing overall energy absorption efficiency.

[0005] Secondly, in the event of a collision, even with only minor deformation, the entire crash beam assembly often needs to be replaced because the crossbeam and energy-absorbing box are usually welded together or are non-separable integral structures. This results in high maintenance costs and poor economic efficiency.

[0006] Therefore, in order to solve the aforementioned problems, we propose an automotive anti-collision beam. Utility Model Content

[0007] The purpose of this utility model is to address the deficiencies in the existing technology by proposing an automotive anti-collision beam.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An automotive anti-collision beam includes a beam body, with energy-absorbing boxes fixedly installed on both the left and right sides of the back of the beam body, and an energy-absorbing beam fixedly installed on the front of the beam body by bolts;

[0010] The beam has three cavities inside, which are, from top to bottom, an upper cavity, a middle cavity, and a lower cavity. Inclined plates are fixedly installed inside the upper cavity and the lower cavity, and an inner beam is fixedly installed inside the middle cavity.

[0011] Furthermore, the energy-absorbing beam includes a rear beam plate, a front beam plate, and a plurality of energy-absorbing connecting pieces, with the plurality of energy-absorbing connecting pieces being fixedly installed at equal intervals between the rear beam plate and the front beam plate.

[0012] Furthermore, the energy-absorbing connecting piece has a V-shaped structure.

[0013] Furthermore, multiple internally threaded cylinders are fixedly installed on the rear beam plate and the front beam plate. The multiple internally threaded cylinders are symmetrically arranged. The interior of the beam body and the interior of the rear beam plate are provided with through holes corresponding to the internally threaded cylinders. The beam body is connected to the multiple internally threaded cylinders inside the energy-absorbing beam through multiple bolts and the through holes.

[0014] Furthermore, both the upper and lower cavities have rectangular cross-sections, and the inclined plate divides the cross-sections of the upper and lower cavities into two triangular structures.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention features a triple energy-absorbing structure. The energy-absorbing beam, as the first stage, absorbs the sharp energy of the initial collision through the plastic deformation of the V-shaped connecting pieces. The beam body, as the second stage, further resists and absorbs energy through internal reinforcement structures. The energy-absorbing box, as the third stage, systematically crushes to deplete the remaining energy. This sequential activation mechanism greatly optimizes the energy dissipation path, improves the overall energy absorption efficiency, and more effectively protects the safety of the occupant cabin.

[0017] This invention connects the energy-absorbing beam to the main beam with bolts, making it an independent and quickly replaceable component. In the event of a low-speed collision, often only the deformed energy-absorbing beam needs to be replaced, while the more expensive main beam and energy-absorbing box assembly are retained. This greatly simplifies the maintenance process, saves maintenance time and parts costs, and improves the vehicle's economic efficiency. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0019] Figure 1 This is one of the perspective views of this utility model;

[0020] Figure 2 This is a second perspective view of the present utility model;

[0021] Figure 3 This is a perspective view of the energy-absorbing beam of this utility model;

[0022] Figure 4 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 5 For the present utility model Figure 3 Enlarged view of point B in the middle.

[0024] In the diagram: 1. Beam; 2. Energy-absorbing beam; 3. Energy-absorbing box; 4. Inner beam; 5. Inclined plate; 6. Rear beam plate; 7. Front beam plate; 8. Energy-absorbing connecting piece; 9. Internal threaded cylinder. Detailed Implementation

[0025] 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;

[0026] Reference Figure 1-5 A car anti-collision beam includes a beam body 1, with energy-absorbing boxes 3 fixedly installed on both the left and right sides of the back of the beam body 1, and an energy-absorbing beam 2 fixedly installed on the front of the beam body 1 by bolts; the beam body 1 has three cavities inside, which are, from top to bottom, an upper cavity, a middle cavity and a lower cavity, respectively, with inclined plates 5 fixedly installed inside the upper cavity and the lower cavity, and an inner beam 4 fixedly installed inside the middle cavity.

[0027] The anti-collision beam mainly consists of three major structures: energy-absorbing beam 2, beam body 1, and energy-absorbing box 3. Energy-absorbing beam 2, as the first-level energy-absorbing mechanism, absorbs and disperses a portion of the energy through controlled plastic deformation during the initial stage of a collision. Beam body 1, as the second-level energy-absorbing and central support structure, features multiple cavities and inclined plates within its interior, along with reinforced inner beams. This design allows beam body 1 to continue absorbing energy while effectively resisting deformation, distributing the remaining impact force more evenly. Energy-absorbing box 3, as the third-level energy-absorbing mechanism, systematically exhausts the final energy through axial crushing and guides the direction of the force, preventing the impact force from directly intruding into the passenger compartment.

[0028] The inner beam 4 is the main load-bearing skeleton of the beam structure, responsible for continuing to resist impact forces after the energy-absorbing beam 2 and effectively distributing the force to the energy-absorbing boxes 3 on both sides. The energy-absorbing boxes 3 can be made of thin-walled metal, and the surface can be provided with grooves to induce collapse, so that when the energy-absorbing box 3 is subjected to axial impact, it can be stably and sequentially crushed like an accordion. During the crushing process, the energy-absorbing box 3 can continuously absorb energy through the deformation of the material.

[0029] The energy-absorbing beam 2 includes a rear beam plate 6, a front beam plate 7, and several energy-absorbing connecting pieces 8. The energy-absorbing connecting pieces 8 are fixedly installed at equal intervals between the rear beam plate 6 and the front beam plate 7, and the energy-absorbing connecting pieces 8 have a V-shaped structure.

[0030] When subjected to a frontal impact, the V-shaped energy-absorbing connecting piece 8 will generate huge stress concentration at the sharp corner of the V-shape, causing it to undergo plastic deformation in a predetermined and stable manner. This deformation process will continuously and massively consume the collision kinetic energy, while multiple equidistantly arranged energy-absorbing connecting pieces 8 ensure the smoothness and continuity of the energy absorption process.

[0031] Multiple internal threaded cylinders 9 are fixedly installed on the rear beam plate 6 and the front beam plate 7. The multiple internal threaded cylinders 9 are symmetrically arranged. The interior of the beam body 1 and the interior of the rear beam plate 6 are provided with through holes corresponding to the internal threaded cylinders 9. The beam body 1 is connected to the multiple internal threaded cylinders 9 inside the energy-absorbing beam 2 through multiple bolts and through holes.

[0032] The internal threaded cylinder 9 allows the energy-absorbing beam 2 to be a separately detachable and replaceable component. In the event of a low-speed collision, if only the energy-absorbing beam 2 is damaged, only the energy-absorbing beam 2 can be removed and replaced without replacing the entire anti-collision beam assembly, which greatly reduces maintenance costs and time.

[0033] Both the upper and lower cavities have rectangular cross-sections, and the inclined plate 5 divides the cross-sections of the upper and lower cavities into two triangular structures.

[0034] The inclined plate 5 divides the rectangular cavity into a triangular structure. Since the triangle is the most stable structure in geometry, the main beam 1 has excellent bending and shear resistance. At the same time, the presence of the inclined plate 5 greatly enhances the stability of the upper and lower cavities when subjected to impact, preventing the cavities from being easily crushed, thereby improving the overall stiffness and strength of the beam 1.

Claims

1. A car anti-collision beam, comprising a beam body (1), wherein energy-absorbing boxes (3) are fixedly installed on both the left and right sides of the back of the beam body (1), characterized in that, An energy-absorbing beam (2) is fixedly installed on the front of the beam (1) by bolts; The beam (1) has three cavities inside, which are the upper cavity, the middle cavity and the lower cavity from top to bottom. Inclined plates (5) are fixedly installed inside the upper cavity and the lower cavity, and an inner beam (4) is fixedly installed inside the middle cavity.

2. The automobile anti-collision beam according to claim 1, characterized in that, The energy-absorbing beam (2) includes a rear beam plate (6), a front beam plate (7), and a plurality of energy-absorbing connecting pieces (8), which are fixedly installed at equal intervals between the rear beam plate (6) and the front beam plate (7).

3. The automobile anti-collision beam according to claim 2, characterized in that, The energy-absorbing connecting piece (8) has a V-shaped structure.

4. The automobile anti-collision beam according to claim 2, characterized in that, Multiple internal threaded cylinders (9) are fixedly installed on the rear beam plate (6) and the front beam plate (7). The multiple internal threaded cylinders (9) are symmetrically arranged. The interior of the beam body (1) and the interior of the rear beam plate (6) are provided with through holes corresponding to the internal threaded cylinders (9). The beam body (1) is connected to the multiple internal threaded cylinders (9) inside the energy-absorbing beam (2) by multiple bolts and the through holes.

5. The automotive anti-collision beam according to claim 1, characterized in that, The upper cavity and the lower cavity both have rectangular cross-sections, and the inclined plate (5) divides the cross-sections of the upper cavity and the lower cavity into two triangular structures.

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