A front bumper assembly structure for new energy vehicles

Abstract

This utility model relates to the field of automotive parts technology and discloses a front bumper assembly structure for new energy vehicles. The structure includes a front bumper body with an energy-absorbing mechanism inside. The energy-absorbing mechanism includes an arc-shaped front panel, multiple corrugated connecting plates fixedly connected to the outside of the arc-shaped front panel, an elastic buffer layer fixedly connected to the outside of the corrugated connecting plates, a honeycomb structure layer fixedly connected to the outside of the elastic buffer layer, a foam filling layer fixedly connected to the outside of the honeycomb structure layer, and a thin metal plate layer fixedly connected to the outside of the foam filling layer. In this utility model, during a frontal collision, the impact force is first buffered by the outer layer of the bumper, then transmitted to the front bumper body, causing the arc-shaped front panel to disperse the impact force. Subsequently, multiple layers absorb energy in stages, and the thin metal plate layer blocks the inward transmission of energy, reducing the impact on the vehicle body and battery pack, resulting in more balanced protection.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a front bumper assembly structure for new energy vehicles. Background Technology

[0002] In daily commutes on urban roads, new energy vehicles often face unexpected situations such as low-speed rear-end collisions, scrapes against curbs, and pedestrian collisions. During morning rush hour congestion, frequent starting and stopping of vehicles increases the risk of low-speed rear-end collisions due to following too closely. When parking on the side of the road, improper operation can easily cause scrapes against curbs, damaging the front of the vehicle. In densely populated areas such as residential areas and schools, there is a risk of collisions caused by pedestrians crossing the road. As the primary protective component at the front of the vehicle, the front bumper assembly must simultaneously consider collision buffering, pedestrian protection, and the integrity of the vehicle's exterior.

[0003] In existing new energy vehicle front bumper assemblies, when a frontal collision occurs, the exterior trim panel initially buffers minor scrape impacts to prevent direct damage to the internal structure. If the impact force is larger, after the exterior trim panel breaks, the anti-collision beam bears the main collision load and evenly transmits the force to the energy-absorbing boxes on both sides through its own rigidity. Under the action of the pre-set collapse guide groove, the energy-absorbing boxes deform and collapse in an orderly manner along the axial direction, converting the collision kinetic energy into structural deformation energy, significantly reducing the impact force transmitted to the vehicle's longitudinal beams and passenger compartment. At the same time, sensors such as radar and cameras integrated into the bumper reduce vibration and impact through the bracket buffer structure, ensuring that the sensing function is normal after the collision and providing data support for subsequent vehicle safety control.

[0004] In existing technologies, some new energy vehicle front bumper assembly structures, in pursuit of lightweight design, have excessively thin middle sections of the anti-collision beams, or energy-absorbing boxes are only arranged at the left and right ends with a single collapse path. When the vehicle encounters an offset collision, the impact force is concentrated on one side or the weak middle area of ​​the anti-collision beam, and cannot be evenly transmitted to the energy-absorbing boxes on both sides through the anti-collision beam. This results in the energy-absorbing boxes collapsing only on one side, while the other side does not fully perform its energy-absorbing function. Consequently, the local impact force is directly transmitted to the longitudinal beams of the vehicle body, causing deformation of the longitudinal beams and affecting the overall protection effect of the front of the vehicle. Therefore, a new front bumper assembly structure for new energy vehicles is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a front bumper assembly structure for new energy vehicles, aiming to improve the problem of uneven protection in some front bumper assembly structures in the prior art, which leads to localized stress concentration.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A front bumper assembly structure for a new energy vehicle includes a front bumper body, an installation mechanism inside the front bumper body, a license plate fixedly connected to the outside of the front bumper body, two decorative strips fixedly connected to the top two sides of the front bumper body, an energy-absorbing mechanism inside the front bumper body, the energy-absorbing mechanism including an arc-shaped front plate, the outside of the arc-shaped front plate fixedly connected to the inside of the front bumper body, multiple corrugated connecting plates fixedly connected to the outside of the arc-shaped front plate, an elastic buffer layer fixedly connected to the outside of the corrugated connecting plates, a honeycomb structure layer fixedly connected to the outside of the elastic buffer layer, a foam filling layer fixedly connected to the outside of the honeycomb structure layer, a thin metal plate layer fixedly connected to the outside of the foam filling layer, and a support component disposed outside the thin metal plate layer.

[0008] As a further description of the above technical solution:

[0009] The mounting mechanism includes multiple fixing blocks, and the multiple fixing blocks are externally fixedly connected to the interior of the front bumper body;

[0010] As a further description of the above technical solution:

[0011] The support component includes a core energy-absorbing layer, which is fixedly connected to the outside of a metal sheet layer, and multiple horizontal plates are fixedly connected to the outside of the core energy-absorbing layer.

[0012] As a further description of the above technical solution:

[0013] The fixed block is internally slidably connected with a connecting hook, and the multiple connecting hooks are externally fixedly connected with a lower grille;

[0014] As a further description of the above technical solution:

[0015] Two connecting blocks are fixedly connected to the inside of the front bumper body on both sides. The connecting blocks have a sliding groove inside, and an L-shaped connecting strip is slidably connected inside the sliding groove. The L-shaped connecting strip is fixedly connected to the outside of the energy absorption mechanism at both ends. The L-shaped connecting strip is L-shaped and arranged in an array.

[0016] As a further description of the above technical solution:

[0017] The upper inner side of the front bumper body is fixedly connected to a front bumper buffer beam, the lower inner bottom side of the front bumper body is fixedly connected to a lower support guard plate, and two headlights are fixedly connected inside the front bumper body.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, when a vehicle is involved in a frontal collision, the impact force is first buffered by the outer layer of the bumper, and then transmitted to the front bumper body. After the body deforms, it drives the arc-shaped front panel to disperse the impact force. Subsequently, the wave-shaped connecting plate, elastic buffer layer, honeycomb structure layer and foam filling layer are linked in sequence to absorb energy step by step. Then, the metal thin plate layer blocks the energy from being conducted inward. Finally, the core energy-absorbing layer is linked with the horizontal plate to transmit the remaining energy to the longitudinal beam of the vehicle body through the L-shaped connecting strip and connecting block, realizing the protective function of layered force dissipation. The energy absorption efficiency is improved by the orderly linkage of multiple components, reducing the impact of the collision on the vehicle body and battery pack, and providing more balanced protection.

[0020] 2. In this utility model, the lower grille can be quickly installed and its ventilation and heat dissipation functions can be ensured by sliding and engaging the fixing block inside the front bumper body with the connecting hook of the lower grille. At the same time, the connecting blocks on both sides of the front bumper body slide and engage with the L-shaped connecting strips at both ends of the energy absorption mechanism through the sliding groove, so as to firmly fix the energy absorption mechanism inside the body. Through sliding engagement and embedded fixation, the installation process of the lower grille and the energy absorption mechanism is simplified and the assembly efficiency is improved. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a front bumper assembly structure for a new energy vehicle proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the front bumper buffer beam of a new energy vehicle front bumper assembly structure proposed in this utility model.

[0023] Figure 3 This utility model provides a schematic diagram of the headlight structure of a front bumper assembly for a new energy vehicle.

[0024] Figure 4 This is a magnified view of point A in diagram 3;

[0025] Figure 5 This is a schematic diagram of the arc-shaped front panel of a new energy vehicle front bumper assembly structure proposed in this utility model.

[0026] Figure 6 This is a magnified view of point B in diagram 5.

[0027] Legend:

[0028] 1. Front bumper body; 2. Decorative strip; 3. License plate; 4. Mounting mechanism; 41. Lower grille; 42. Connecting hook; 43. Fixing block; 44. L-shaped connecting strip; 45. Connecting block; 5. Headlights; 6. Front bumper buffer beam; 7. Energy absorption mechanism; 71. Arc-shaped front panel; 72. Wave-shaped connecting plate; 73. Elastic buffer layer; 74. Honeycomb structure layer; 75. Foam filling layer; 76. Metal sheet layer; 77. Support component; 771. Core energy absorption layer; 772. Horizontal plate; 8. Lower support guard plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example:

[0031] A front bumper assembly structure for a new energy vehicle, with reference to Figure 1 , Figure 5 and Figure 6 The front bumper body 1 includes a mounting mechanism 4 inside the front bumper body 1. The mounting mechanism 4 is responsible for connecting and fixing the lower grille 41 and the energy absorption mechanism 7 to the front bumper body 1, ensuring that the components do not shift during vehicle operation, while simplifying the assembly process and improving production and maintenance efficiency. The front bumper body 1 is externally fixedly connected to a license plate 3, which is used to install the vehicle license plate, meeting the requirements of traffic regulations for vehicle identification and facilitating traffic management and identification. The top two sides of the front bumper body 1 are fixedly connected to two decorative strips 2, which beautify the appearance of the front of the vehicle and enhance the visual refinement of the whole vehicle. The front bumper body 1 is internally equipped with an energy absorption mechanism 7. The front bumper body 1 is used to integrate and support all internal components and external accessories, and at the same time, it uses its own toughness to buffer the impact force in the early stage of the collision, protecting the internal energy absorption mechanism 7 and the core components of the vehicle body. The energy absorption mechanism 7 absorbs and dissipates the collision energy through the synergistic effect of the multi-layer structure, reducing the impact of the impact force on the longitudinal beams of the vehicle body, the passenger compartment and the battery pack.

[0032] Specifically, the lower grille 41, energy-absorbing mechanism 7, and front bumper body 1 are connected and fixed by the installation mechanism 4 to ensure that the components do not shift during driving and are easy to install and maintain. In daily use, the front bumper body 1 carries the license plate 3, decorative strip 2, and headlights 5, while protecting the internal components with its own toughness. When a collision occurs, the front bumper body 1 first buffers the initial impact force, and then the energy-absorbing mechanism 7 absorbs energy through a multi-layer structure, ultimately reducing the impact on the vehicle's longitudinal beams, passenger compartment, and battery pack, thus completing the protection.

[0033] The energy-absorbing mechanism 7 includes an arc-shaped front panel 71, which is externally fixedly connected to the interior of the front bumper body 1. Multiple corrugated connecting plates 72 are externally fixedly connected to the arc-shaped front panel 71. The arc-shaped front panel 71 disperses the vertical impact force of a frontal collision to both sides through its arc-shaped structure, avoiding localized force concentration, and simultaneously transferring uniform energy to subsequent energy-absorbing components. An elastic buffer layer 73 is externally fixedly connected to the corrugated connecting plates 72. The corrugated connecting plates 72, through the compression deformation of their own pleated structure, initially absorb the collision energy and uniformly transmit the energy to the inner elastic buffer layer 73, preventing localized energy accumulation. A honeycomb structure is externally fixedly connected to the elastic buffer layer 73. The honeycomb structure layer 74 and the elastic buffer layer 73 are made of highly elastic material. After being subjected to force, they undergo elastic deformation, converting some of the kinetic energy into elastic potential energy, further reducing the impact force. A foam filling layer 75 is fixedly connected to the outside of the honeycomb structure layer 74. The honeycomb structure layer 74 utilizes the high stability and collapse energy absorption characteristics of the honeycomb structure to absorb a large amount of collision energy through the plastic deformation of the honeycomb wall under pressure. A metal sheet layer 76 is fixedly connected to the outside of the foam filling layer 75. The metal sheet layer 76 is made of high-strength metal material. With its own rigidity, it blocks the energy that is not absorbed by the inner layer from being further conducted inward. A support component 77 is provided on the outside of the metal sheet layer 76.

[0034] Specifically, when the energy absorption mechanism 7 is working, the arc-shaped front plate 71 first disperses the vertical impact force of the frontal collision to both sides, so as to transfer uniform energy to the subsequent components. Then, the corrugated connecting plate 72 absorbs energy initially through folded compression deformation and conducts the energy to the elastic buffer layer 73. The elastic buffer layer 73 deforms under force and converts kinetic energy into elastic potential energy to further reduce the force. Subsequently, the energy is conducted to the honeycomb structure layer 74, which absorbs a large amount of energy through the plastic deformation of the honeycomb wall. The foam filling layer 75 assists in absorbing residual energy, and the metal thin plate layer 76 conducts energy inward by rigidly blocking it. Finally, the support component 77 completes the final energy transfer and protection, realizing multi-layer synergistic energy absorption.

[0035] The support component 77 includes a core energy-absorbing layer 771, which is fixedly connected to the outside of the metal sheet layer 76. The core energy-absorbing layer 771 completely absorbs the remaining collision energy through layered collapse, preventing the undissipated energy from directly impacting the vehicle body. Multiple horizontal plates 772 are fixedly connected to the outside of the core energy-absorbing layer 771. The horizontal plates 772 are used to disperse the energy absorbed by the core energy-absorbing layer 771 and evenly transfer the small amount of unabsorbed energy to the L-shaped connecting strip 44.

[0036] Specifically, when the support component 77 is working, the core energy-absorbing layer 771 first receives the remaining collision energy conducted by the metal sheet layer 76, and completely absorbs the energy through layered collapse to prevent undissipated energy from impacting the vehicle body; then the horizontal plate 772 outside the core energy-absorbing layer 771 is simultaneously subjected to force, which evenly disperses the small amount of unabsorbed energy and transfers it to the L-shaped connecting strip 44. Finally, it works with the connecting strip to complete the transmission of energy to the longitudinal beam of the vehicle body, thus achieving the final treatment of collision energy.

[0037] Reference Figures 2 to 4 The mounting mechanism 4 includes multiple fixing blocks 43, which are externally fixedly connected to the interior of the front bumper body 1. The fixing blocks 43 provide a basic structure for the sliding engagement of the connecting hooks 42, ensuring the installation position of the lower grille 41. The connecting hooks 42 are slidably connected inside the fixing blocks 43, and the lower grille 41 is externally fixedly connected to the multiple connecting hooks 42. The lower grille 41 provides ventilation channels for components such as the battery, motor, and air conditioning condenser of the new energy vehicle, achieving heat dissipation while preventing external dust and debris from entering the vehicle body, protecting core components. Two connecting blocks 45 are fixedly connected to the interior sides of the front bumper body 1. The connecting blocks 45 have internal grooves, and L-shaped connecting strips 44 are slidably connected inside these grooves. The grooves in the connecting blocks 45 are used to cooperate with the L-shaped connecting strips 44, providing a fixed support point for the energy absorption mechanism 7. The L-shaped connecting strips 44 are externally fixedly connected to both ends of the energy absorption mechanism 7. The L-shaped connecting strip 44 is L-shaped. The L-shaped connecting strip 44 transfers the remaining energy absorbed by the energy-absorbing mechanism 7 to the connecting block 45, and then to the longitudinal beam of the vehicle body. The L-shaped structure can enhance the connection stability and prevent the energy from falling off during the energy transfer process. It is arranged in an array. The upper inner side of the front bumper body 1 is fixedly connected to the front bumper buffer beam 6. The front bumper buffer beam 6 runs horizontally through the upper part of the front bumper body 1, which enhances the overall structural rigidity of the front bumper and helps to disperse the upper impact force during a collision. The lower support guard plate 8 is fixedly connected to the inner bottom side of the front bumper body 1. The lower support guard plate 8 covers the bottom of the front bumper body 1 and protects the internal energy-absorbing mechanism 7 and the bottom parts of the vehicle body from the impact and corrosion of ground gravel and water accumulation. The interior of the front bumper body 1 is fixedly connected to two headlights 5. The headlights 5 include low beam headlights, high beam headlights, turn signals and other functions to meet the needs of vehicle night driving lighting and turn signal, and improve driving safety.

[0038] Specifically, when the installation mechanism 4 is working, it first locks the lower grille 41 by sliding the fixing block 43 and the connecting hook 42 to ensure heat dissipation and dust prevention. Then, the connecting block 45 slides and the L-shaped connecting strip 44 cooperate to fix the energy absorption mechanism 7 and lay the foundation for subsequent energy conduction. In daily use, the front bumper buffer beam 6 enhances the rigidity of the bumper, the lower support guard plate 8 protects the bottom components, and the headlights 5 provide illumination and turn signals. In the event of a collision, the L-shaped connecting strip 44 conducts the energy of the energy absorption mechanism 7 to the connecting block 45, and the front bumper buffer beam 6 helps to disperse the upper impact force, jointly ensuring the stability and function of the assembly.

[0039] The implementation principle of this application embodiment is as follows: the fixing block 43 inside the front bumper body 1 first slides and engages with the connecting hook 42 of the lower grille 41, quickly completing the installation of the lower grille 41 and ensuring its stable ventilation and heat dissipation function. At the same time, the connecting blocks 45 on both sides of the front bumper body 1 slide and engage with the L-shaped connecting strips 44 at both ends of the energy absorption mechanism 7 through the sliding groove, firmly fixing the energy absorption mechanism 7 inside the body and preventing displacement due to vibration during vehicle operation. The headlights 5 can be manually turned on according to the driving environment to realize the functions of lighting and turn signal.

[0040] When a vehicle is involved in a frontal collision, the impact force first acts on the outermost component of the bumper, initiating the initial energy buffer. The impact force is then further transmitted to the front bumper body 1, which undergoes slight deformation due to its own toughness, simultaneously transferring the force to the curved front panel 71. The curved structure disperses the vertical impact force to both sides, effectively reducing localized force concentration. Subsequently, the energy is first transmitted to the corrugated connecting plate 72, whose corrugated structure absorbs some energy through its own compression deformation and evenly transmits the energy to the elastic buffer layer 73. The elastic buffer layer 73 undergoes elastic deformation under pressure, converting some kinetic energy into elastic potential energy, further mitigating the impact force. Next, the energy is transmitted to the honeycomb structure layer 74, where the honeycomb walls undergo plastic deformation under pressure, absorbing a large amount of energy through structural collapse. Meanwhile, the foam filling layer 75 filling the gaps in the honeycomb structure layer 74 is simultaneously compressed, assisting in absorbing residual energy. Subsequently, energy is applied to the metal sheet layer 76. The metal sheet resists the impact force due to its rigidity, preventing the energy from being conducted further inward. Finally, the energy is transferred to the core energy-absorbing layer 771. The core energy-absorbing layer 771 absorbs the remaining energy completely through controllable layered collapse. At the same time, the horizontal plate 772 outside the core energy-absorbing layer 771 is subjected to force. Through linkage with the L-shaped connecting strip 44, a small amount of unabsorbed energy is dispersed to the connecting blocks 45 on both sides of the front bumper body 1, and finally transferred to the longitudinal beam of the vehicle body, completing the entire collision protection process.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new energy automobile front bumper assembly structure, comprising a front bumper body (1), characterized in that: The front bumper body (1) is provided with an installation mechanism (4) inside, a license plate (3) is fixedly connected to the outside of the front bumper body (1), two decorative strips (2) are fixedly connected to the top two sides of the front bumper body (1), and an energy absorption mechanism (7) is provided inside the front bumper body (1). The energy-absorbing mechanism (7) includes an arc-shaped front panel (71), which is externally fixedly connected to the interior of the front bumper body (1). Multiple corrugated connecting plates (72) are externally fixedly connected to the arc-shaped front panel (71). An elastic buffer layer (73) is externally fixedly connected to the corrugated connecting plate (72). A honeycomb structure layer (74) is externally fixedly connected to the elastic buffer layer (73). A foam filling layer (75) is externally fixedly connected to the honeycomb structure layer (74). A metal sheet layer (76) is externally fixedly connected to the foam filling layer (75). A support component (77) is provided on the outside of the metal sheet layer (76).

2. The front bumper assembly structure for a new energy vehicle according to claim 1, characterized in that: The mounting mechanism (4) includes multiple fixing blocks (43), which are externally fixedly connected to the interior of the front bumper body (1).

3. The front bumper assembly structure for a new energy vehicle according to claim 2, characterized in that: The support component (77) includes a core energy-absorbing layer (771), which is fixedly connected to the outside of a metal sheet layer (76), and a plurality of horizontal plates (772) are fixedly connected to the outside of the core energy-absorbing layer (771).

4. The front bumper assembly structure for a new energy vehicle according to claim 2, characterized in that: The fixed block (43) is internally slidably connected to a connecting hook (42), and the multiple connecting hooks (42) are externally fixedly connected to a lower grille (41).

5. The front bumper assembly structure for a new energy vehicle according to claim 4, characterized in that: Two connecting blocks (45) are fixedly connected to the inside sides of the front bumper body (1). The connecting blocks (45) have a sliding groove inside. An L-shaped connecting strip (44) is slidably connected inside the sliding groove. The L-shaped connecting strip (44) is fixedly connected to the outside ends of the energy absorption mechanism (7). The L-shaped connecting strip (44) is L-shaped and arranged in an array.

6. The front bumper assembly structure for a new energy vehicle according to claim 1, characterized in that: The front bumper body (1) is fixedly connected to the upper inner side of the front bumper body (1), and the lower support guard plate (8) is fixedly connected to the bottom inner side of the front bumper body (1). The front bumper body (1) is fixedly connected to two headlights (5).

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