Electric vehicle spliced three-section bumper with energy absorption effect

Abstract

The application discloses a three-section type bumper for electric vehicles with energy absorption effect and relates to the technical field of automobile accessories.The bumper comprises a center pole body, which is a strip-shaped bumper; two side pole bodies, which are arc-shaped bumpers and are hingedly connected to the two sides of the center pole body; two fixing beams, which are fixed to the two sides behind the center pole body and are connected to a vehicle frame; a plurality of center inserts, which are arranged in the center pole body in an up-and-down slidable manner; a plurality of side inserts, which are arranged in the two side pole bodies in an up-and-down slidable manner; and support connecting rods, each of the side pole bodies is hingedly connected to the vehicle frame through at least one support connecting rod. The application has significant advantages in improving the collision safety of vehicles, reducing the maintenance cost and enhancing the overall performance of vehicles.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, specifically a three-section bumper for electric vehicles with energy-absorbing properties. Background Technology

[0002] As a crucial component of a car's body, the bumper's primary function is to absorb and mitigate external impacts, protecting the front and rear of the vehicle. In the event of a collision, the bumper is the first to bear the impact force, thus reducing injury to other parts of the vehicle and passengers. With the rapid development of the automotive industry and the increasing safety awareness of consumers, the design and manufacturing of bumpers are increasingly emphasizing their energy absorption capabilities and collision safety.

[0003] Off-road vehicles, due to their special purpose and driving environment, have a relatively high frequency of bumper use and a relatively high probability of collision. During off-road driving, vehicles often need to traverse rough and uneven terrain, greatly increasing the risk of collisions with obstacles such as rocks and trees.

[0004] Traditional off-road vehicle bumpers typically feature a one-piece design, resulting in a bulky and non-removable structure. During transportation, because the bumper's length and volume exceed standard shipping dimensions, additional extra charges for oversized components are often incurred, increasing the product's shipping costs.

[0005] Off-road vehicles inevitably encounter minor collisions during off-road driving. Traditional bumpers, due to limitations in materials and design, are prone to dents and deformation after such incidents, affecting both the vehicle's aesthetics and its protective effectiveness. When a bumper is damaged in a collision, the traditional repair method often involves replacing the entire bumper, resulting in relatively high costs. In high-intensity collisions, traditional bumpers often struggle to effectively absorb and disperse the impact force. When the impact force exceeds the bumper's capacity, the remaining force is transferred to the vehicle body, posing a potential threat to the vehicle's structure and passenger safety.

[0006] Therefore, it is necessary to provide a three-section bumper for electric vehicles with energy absorption effect to solve the problems mentioned in the background art. Summary of the Invention

[0007] To achieve the above objectives, the present invention provides the following technical solution: a three-section spliced ​​bumper for electric vehicles with energy absorption effect, comprising:

[0008] The center bumper is a strip-shaped bumper;

[0009] The two side bars are curved bumpers, which are hinged to both sides of the central bar.

[0010] Two fixed beams are respectively fixed to both sides behind the central bar, and the fixed beams are connected to the frame;

[0011] Multiple central inserts are slidably arranged vertically and through the central bar body;

[0012] Multiple side inserts are slidably arranged vertically and through each of the two side bar bodies;

[0013] Each of the side bars is hinged to the frame via at least one support link.

[0014] Furthermore, both the central insert and the side inserts are made of energy-absorbing materials, including but not limited to resin and plexiglass.

[0015] Furthermore, the fixed beam is slidably connected to the vehicle frame.

[0016] Furthermore, each side of the central bar body is provided with a support seat that fits into each central insert piece, and a support rubber is fixed to the back of the support seat, which is fixed in the frame.

[0017] Furthermore, a torsion rubber is fixed in the middle of the frame, and a connecting plate is fixed at the upper and lower ends of the torsion rubber. The two support rods are respectively hinged to the front and rear of the connecting plate.

[0018] Furthermore, each of the side bars has two vertical and parallel movable shafts on its back. The two movable shafts are connected together by a tension spring at the top and bottom, and both movable shafts are in contact with each side insert in the side bar.

[0019] Furthermore, each of the side bars has a vertical connecting shaft fixed to its back, and the upper and lower ends of the two movable shafts are each hinged to the connecting shaft via a tension link.

[0020] Furthermore, the upper and lower ends of the connecting shaft are respectively hinged with supporting connecting rods.

[0021] Furthermore, the arrangement density, material properties, and shape of the center insert and the side inserts are adjusted according to the vehicle type and the expected collision intensity.

[0022] Furthermore, the hinge, the support link, the tension link, and the connecting shaft are all made of materials with sufficient strength and durability, including but not limited to cast iron and aluminum alloy.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] Compared to traditional factory-installed integrated bumpers, the three-section bumper, with its detachable and modular design, significantly saves space during packaging and transportation, reducing logistics costs and making the product more competitive in the market, thus providing consumers with more choices.

[0025] In this invention, when a collision occurs, the colliding object first comes into contact with the inserts. These inserts, made of energy-absorbing materials, can quickly absorb the collision energy, effectively reducing the direct impact on the bumper body and the vehicle frame. Since the center insert and the side inserts are designed as replaceable parts, after a collision, only the damaged inserts need to be replaced to restore the function and appearance of the bumper. This not only simplifies the repair process but also reduces repair costs, as the inserts are less expensive and easier to obtain than the entire bumper.

[0026] The central bar body of the present invention is flexibly connected to the frame through a supporting rubber. When the central insert is subjected to an impact force, the force will be transmitted to the frame through the supporting rubber. The elastic properties of the supporting rubber enable it to absorb and disperse part of the impact energy, further reducing the impact on the frame.

[0027] In the event of a minor side impact, the side insert is pushed, causing the movable shaft to expand and the tension spring to extend. This process converts the impact force into a lateral tension force, effectively dispersing energy and reducing direct impact on the frame. In the event of a larger impact, the side insert will directly push the movable shaft to expand to a position aligned with the connecting shaft. At this point, the impact force is transmitted through the connecting shaft to the support link, and then to the torsion rubber in the middle of the frame. Due to its torsional resistance, the torsion rubber absorbs and disperses a significant amount of impact energy, providing additional protection for the vehicle. Attached Figure Description

[0028] Figure 1 A front view of a three-section bumper for an electric vehicle with energy-absorbing properties;

[0029] Figure 2 A schematic diagram of the cross-section of the central section of a three-section bumper for electric vehicles with energy-absorbing properties;

[0030] Figure 3 This is a schematic diagram of the back of a three-section bumper for an electric vehicle with energy-absorbing properties.

[0031] Figure 4 A top view of a three-section bumper for an electric vehicle with energy-absorbing properties;

[0032] Figure 5 This is a schematic diagram of the back of the side bar in a three-section bumper for electric vehicles with energy-absorbing properties.

[0033] In the diagram: 1. Center bar; 2. Side bar; 3. Hinge; 4. Fixed beam; 5. Frame; 6. Center insert; 61. Support seat; 62. Support rubber; 7. Side insert; 71. Movable shaft; 72. Tension spring; 73. Tension link; 74. Connecting shaft; 8. Support link; 9. Connecting disc; 10. Torque rubber. Detailed Implementation

[0034] Please see Figures 1-5 In this embodiment of the invention, an energy-absorbing three-section bumper for electric vehicles includes:

[0035] The center bumper 1 is a strip-shaped bumper;

[0036] The two side bars 2 are arc-shaped bumpers, which are respectively hinged to both sides of the central bar 1 via hinges 3;

[0037] Two fixed beams 4 are fixed to the two sides behind the central bar body 1, and the fixed beams 4 are connected to the frame 5;

[0038] Multiple central inserts 6 are slidably arranged vertically and through the central bar body 1;

[0039] Multiple side inserts 7 are slidably arranged vertically and through each of the two side bar bodies 2; and support links 8 are provided, with each side bar body 2 hinged to the frame 5 via at least one support link 8.

[0040] In minor collisions, the colliding object first contacts and acts on the central insert 6 or the side insert 7, thus avoiding direct impact on the bumper body. The central insert 6 and the side insert 7 are designed as replaceable parts to reduce maintenance costs. At the same time, the side bar 2 is connected to the central bar 1 via the hinge 3 and to the frame 5 via the support link 8. This allows the side bar 2 to effectively transmit and disperse the impact force to the frame 5 via the support link 8 when it is subjected to external force, achieving a buffering and energy absorption effect.

[0041] In this embodiment, both the central insert 6 and the side insert 7 are made of energy-absorbing materials, including but not limited to resin and plexiglass, to enhance energy absorption capacity during collisions.

[0042] Please see Figure 2 In this embodiment, the fixed beam 4 is slidably connected to the frame 5.

[0043] In this embodiment, the center bar body 1 is provided with support seats 61 on both sides, which fit with each center insert 6. The back of the support seat 61 is fixed with a support rubber 62, which is fixed in the frame 5.

[0044] In other words, the central bar 1 and the frame 5 are held together by the supporting rubber 62. When the vehicle collides with an object head-on, the impact force is transmitted from the central insert 6 to the frame 5 through the supporting rubber 62. This avoids the central bar 1 being directly subjected to force, and the supporting rubber 62 can effectively absorb and disperse the collision energy, reducing the direct impact on the frame 5 and improving the energy absorption effect.

[0045] Please see Figure 3 and Figure 4 In this embodiment, a torsion rubber 10 is fixed in the middle of the frame 5, and a connecting plate 9 is fixed at the upper and lower ends of the torsion rubber 10. The two support rods 8 are respectively hinged to the front and rear of the connecting plate 9.

[0046] In other words, when the side bars 2 on both sides are hit, the impact force will be transmitted to the connecting plate 9. The support link 8 is hinged to the front and rear of the connecting plate 9 respectively, which will apply torque to the torsion rubber 10. Under the action of the anti-torsion ability of the torsion rubber 10 itself, it plays a buffering role. Since it can convert the impact force into torque, it reduces the direct impact on the frame 5 and improves the energy absorption effect.

[0047] Please see Figure 5 In this embodiment, each of the side bar bodies 2 is provided with two vertical and parallel movable shafts 71 on the back. The two movable shafts 71 are connected together by a tension spring 72 at the top and bottom, and both movable shafts 71 are in contact with each side insert 7 in the side bar body 2.

[0048] In this embodiment, a vertical connecting shaft 74 is fixed on the back of each side bar body 2, and the upper and lower ends of the two movable shafts 71 are each hinged to the connecting shaft 74 through a tension connecting rod 73.

[0049] In this embodiment, the upper and lower ends of the connecting shaft 74 are respectively hinged with supporting connecting rods 8.

[0050] In other words, when the side bar 2 experiences a minor collision, the side insert 7 will exert a pushing force on the two movable shafts 71, causing the two movable shafts 71 to pull the tension spring 72 and expand, thereby converting the impact force into a lateral tension force, reducing the direct impact on the frame 5 and improving the energy absorption effect; while when the collision force is larger, when the side insert 7 pushes the two movable shafts 71 to expand to be in the same straight line as the connecting shaft 74, the side insert 7 will directly contact the connecting shaft 74. At this time, the collision pushes the support link 8 through the connecting shaft 74 and is converted into the torque of the torque rubber 10.

[0051] In this embodiment, the arrangement density, material properties, and shape of the central insert 6 and the side insert 7 are adjusted according to the vehicle type and expected collision intensity to optimize energy absorption efficiency and collision protection performance.

[0052] In this embodiment, the hinge 3, the support link 8, the tension link 73, and the connecting shaft 74 are all made of materials with sufficient strength and durability, including but not limited to cast iron and aluminum alloy, to withstand the impact force during a collision and maintain the overall structural stability of the bumper.

[0053] In practice, a flexible connection is achieved between the center bar 1 and the frame 5 through a support rubber 62. When the center insert 6 is subjected to a collision force, the force is transmitted to the frame 5 through the support rubber 62. Due to its elastic properties, the support rubber 62 can absorb and disperse some of the collision energy, further reducing the impact on the frame 5.

[0054] When a vehicle experiences a minor side impact, the impacting object first contacts the side inserts 7. These inserts are made of energy-absorbing material and have excellent energy absorption capabilities. When the side inserts 7 are subjected to a thrust, they push the movable shaft 71, which in turn pulls the tension spring 72 to expand. This process converts the impact force into a lateral tension force, further dispersing the energy.

[0055] In the event of a large impact force, the side insert 7 will directly push the movable shaft 71 to expand to a position that is in line with the connecting shaft 74. Once the movable shaft 71 contacts the connecting shaft 74, the impact force will no longer be mainly dispersed by the tension spring 72, but will be directly transmitted to the support link 8 through the connecting shaft 74. The support link 8 will transmit the impact force to the torsion rubber 10 in the middle of the frame 5. Due to its torsional resistance, the torsion rubber 10 can absorb and disperse a large amount of impact energy.

[0056] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A three-section bumper for electric vehicles with energy-absorbing effect, characterized in that, include: The center bumper (1) is a strip-shaped bumper; The two side bars (2) are arc-shaped bumpers, which are respectively hinged to both sides of the central bar (1) by hinges (3); Two fixed beams (4) are fixed to the two sides behind the central bar (1), and the fixed beams (4) are connected to the frame (5); Multiple central inserts (6) are slidably arranged vertically and through the central bar body (1); Multiple side inserts (7) are slidably arranged vertically and through each of the two side bar bodies (2); Supporting links (8), each of the side bar bodies (2) is hinged to the frame (5) via at least one supporting link (8); Each of the side bar bodies (2) has two vertical and parallel movable shafts (71) on its back. The two movable shafts (71) are connected together by a tension spring (72) at the top and bottom, and both movable shafts (71) are in contact with each side insert (7) in the side bar body (2). Each of the side bar bodies (2) has a vertical connecting shaft (74) fixed on its back, and the upper and lower ends of the two movable shafts (71) are each hinged to the connecting shaft (74) through a tension connecting rod (73); The upper and lower ends of the connecting shaft (74) are respectively hinged to the support connecting rod (8); A torsion rubber (10) is fixed in the middle of the frame (5), and a connecting plate (9) is fixed at the upper and lower ends of the torsion rubber (10). The two support rods (8) are respectively hinged to the front and rear of the connecting plate (9).

2. The three-section spliced ​​bumper for electric vehicles with energy absorption effect according to claim 1, characterized in that, Both the central insert (6) and the side insert (7) are made of energy-absorbing materials, including but not limited to resin and plexiglass.

3. The three-section spliced ​​bumper for electric vehicles with energy absorption effect according to claim 1, characterized in that, The fixed beam (4) is slidably connected to the frame (5).

4. A three-section spliced ​​bumper for electric vehicles with energy-absorbing effect according to claim 3, characterized in that, The center bar body (1) is provided with support seats (61) on both sides, which fit with each center insert (6). Support rubber (62) is fixed on the back of the support seat (61) and the support rubber (62) is fixed in the frame (5).

5. A three-section spliced ​​bumper for electric vehicles with energy absorption effect according to claim 1, characterized in that, The arrangement density, material properties, and shape of the center insert (6) and the side inserts (7) are adjusted according to the vehicle type and the expected collision intensity.

6. A three-section spliced ​​bumper for electric vehicles with energy-absorbing effect according to claim 1, characterized in that, The hinge (3), the support link (8), the tension link (73), and the connecting shaft (74) are all made of materials with sufficient strength and durability, including but not limited to cast iron and aluminum alloy.

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