Buffer structure of electric vehicle bumper
By designing a combination structure of protective plates, connecting frames, and buffer components on the electric vehicle bumper, the problem of insufficient buffering in existing bumpers is solved, achieving effective absorption and dispersion of impact force, protecting electric vehicles and riders, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU SHUNJIU LOCOMOTIVE TECH CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-05
AI Technical Summary
Existing electric vehicle bumpers lack effective cushioning mechanisms, causing the impact force to be directly transmitted to the vehicle body during a collision, increasing repair costs and potentially causing injury to the rider.
Design a bumper structure including a guard plate, a connecting frame and a buffer component. The buffer component consists of a first connecting plate, a second connecting plate and an elastic telescopic component. The buffering capacity is enhanced by a clamping mechanism, and a honeycomb buffer layer is provided on the outside of the guard plate to enhance the energy absorption characteristics.
It effectively absorbs and disperses collision impact, reduces damage to electric vehicles, protects riders, and lowers maintenance costs.
Smart Images
Figure CN224197886U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric vehicle technology, specifically to a bumper buffer structure for electric vehicles. Background Technology
[0002] Currently, most electric vehicle bumpers on the market have a relatively simple structure, offering only basic protection. Traditional bumpers are typically made of rigid materials. While these rigid bumpers can block external forces to some extent during a collision, their lack of an effective cushioning mechanism means that most of the impact force is directly transmitted to the electric vehicle's body. This can easily lead to vehicle deformation, component damage, and increased repair costs. Moreover, significant impacts can also injure the rider, especially in severe collisions where rigid bumpers cannot effectively mitigate the impact. Utility Model Content
[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide an electric vehicle bumper buffer structure that enables the bumper to act as a buffer and fully absorb impact force when an electric vehicle collides.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides an electric vehicle bumper buffer structure, comprising:
[0005] Protective plates and connecting brackets;
[0006] Multiple buffer components are disposed between the guard plate and the connecting frame; the buffer components include a first connecting plate, a second connecting plate and an elastic telescopic component, the two ends of the elastic telescopic component are respectively connected to the first connecting plate and the second connecting plate, and a pressing mechanism is provided on the outer side of the elastic telescopic component. When the first connecting plate and the second connecting plate gradually approach each other, the pressing mechanism presses against the middle of the elastic telescopic component.
[0007] The guard plate is connected to the electric vehicle via a connecting frame.
[0008] Preferably, the elastic telescopic member includes:
[0009] The outer cylinder is fixed to the first connecting plate;
[0010] An inner cylinder is fixed to a second connecting plate, and the end of the inner cylinder away from the second connecting plate is inserted into the outer cylinder.
[0011] A spring is disposed in the inner cylinder, and the two ends of the spring abut against the first connecting plate and the second connecting plate, respectively.
[0012] Preferably, the clamping mechanism includes multiple elastic bodies that are evenly distributed circumferentially on the outer side of the outer cylinder; the two ends of the elastic bodies are respectively clamped on the first connecting plate and the second connecting plate, and the middle part of the elastic body protrudes outward from the outer cylinder.
[0013] Preferably, the outer cylinder has multiple circumferentially evenly distributed elongated grooves at one end near the second connecting plate.
[0014] Preferably, a limiting sleeve is fitted on the outer cylinder, and a strip plate matching the long groove is provided on the limiting sleeve. Two adjacent strip plates cooperate to form a limiting part, and the middle part of the elastic body abuts against the limiting part.
[0015] Preferably, the strip plate has a notch or groove, and the limiting sleeve is fitted with a first retaining spring, which is engaged with the notch or groove.
[0016] Preferably, a limiting rod is fixed on the second connecting plate, the limiting rod passes through the inner cylinder and the first connecting plate, and a one-way clamping structure for fixing the limiting rod is provided on the side of the first connecting plate away from the second connecting plate.
[0017] Preferably, the limiting rod is provided with a plurality of truncated cones, the tips of the truncated cones being far away from the second connecting plate. The one-way clamping structure includes an annular cover and a second retaining spring. The limiting rod passes through the annular cover, and the second retaining spring is sleeved on the limiting rod and is located in the annular cover.
[0018] Preferably, the connecting frame has through holes to accommodate the limiting rod and the one-way clamping structure.
[0019] Preferably, the outer side of the protective plate is provided with a honeycomb-shaped buffer layer.
[0020] The beneficial effects of this utility model are as follows:
[0021] The protective plate designed in this utility model is located on the outermost side of the bumper, directly bearing external impact forces and protecting the electric vehicle body. The connecting frame connects the entire buffer structure to the electric vehicle, ensuring the structure is stably installed on the vehicle. When the protective plate is impacted, the buffer can absorb and disperse the impact force, reducing the force transmitted to the electric vehicle body, thereby reducing damage to the electric vehicle. The elastic telescopic component can expand and contract upon impact, providing initial buffering. As the impact gradually increases, the first and second connecting plates gradually approach each other, and the clamping mechanism clamps the middle of the elastic telescopic component, increasing its mechanical damping during expansion and contraction, thus enhancing the buffering capacity of the elastic telescopic component. The honeycomb buffer layer on the outer side of the protective plate has excellent energy absorption characteristics. When impacted, the honeycomb structure can absorb a large amount of energy through its own deformation, further enhancing the bumper's buffering capacity and better protecting the electric vehicle and rider. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a top view of an electric vehicle bumper buffer structure provided in an embodiment of the present utility model.
[0024] Figure 2 A front-view perspective perspective view of an electric vehicle bumper buffer structure provided for an embodiment of this utility model.
[0025] Figure 3 A rear-view perspective perspective view of an electric vehicle bumper buffer structure provided for an embodiment of this utility model.
[0026] Figure 4 A perspective view of a buffer component in an electric vehicle bumper buffer structure provided for an embodiment of this utility model.
[0027] Figure 5 A front view of a buffer component in an electric vehicle bumper buffer structure provided for an embodiment of this utility model.
[0028] Figure 6 This is a top view of a buffer component in an electric vehicle bumper buffer structure provided for an embodiment of the present utility model.
[0029] Figure 7 for Figure 6 Sectional view at point AA.
[0030] Figure 8 for Figure 7 A magnified view of a portion of point A in the middle.
[0031] Figure 9 This is a schematic diagram illustrating the fit between the limiting sleeve and the outer cylinder in an electric vehicle bumper buffer structure provided in an embodiment of this utility model.
[0032] Explanation of reference numerals in the attached figures:
[0033] 1. Protective plate, 2. Connecting frame, 3. First connecting plate, 4. Second connecting plate, 5. Outer cylinder, 6. Inner cylinder, 7. Spring, 8. Elastomer, 9. Long groove, 10. Limiting sleeve, 11. Strip plate, 12. Notch groove, 13. First retaining ring, 14. Limiting rod, 15. Frustum, 16. Annular cover, 17. Second retaining ring, 18. Through hole, 19. Buffer layer. Detailed Implementation
[0034] 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.
[0035] Example 1:
[0036] like Figures 1 to 9 As shown, Embodiment 1 of this utility model provides a bumper buffer structure for an electric vehicle, including a protective plate 1, a connecting frame 2, and multiple buffer components. The protective plate 1 is located on the outermost side of the bumper, and its function is to directly withstand potential external impact forces. For example, in the event of a minor collision or impact from a foreign object, the protective plate 1 will be the first to contact the impact force, thus preventing the impact force from directly acting on the electric vehicle body and providing initial protection. The connecting frame 2 securely connects the entire buffer structure to the electric vehicle.
[0037] The buffer component, positioned between the guard plate 1 and the connecting frame 2, is a key component for achieving the buffering function. Each buffer component includes a first connecting plate 3, a second connecting plate 4, and an elastic telescopic component. The elastic telescopic component comprises an outer cylinder 5, an inner cylinder 6, and a spring 7. The outer cylinder 5 is fixed to the first connecting plate 3, and the inner cylinder 6 is fixed to the second connecting plate 4, with the end of the inner cylinder 6 furthest from the second connecting plate 4 inserted into the outer cylinder 5. This provides guidance for the extension and retraction of the elastic telescopic component, ensuring its stability during extension and retraction and preventing displacement. The spring 7 is located within the inner cylinder 6, with its two ends abutting against the first connecting plate 3 and the second connecting plate 4, respectively. When the elastic telescopic component is subjected to impact, the spring 7 undergoes elastic deformation, absorbing and storing energy to achieve the buffering function.
[0038] like Figure 7 As shown, a clamping mechanism is also provided on the outer side of the elastic telescopic component. The clamping mechanism includes six elastic bodies 8, which are evenly distributed circumferentially on the outer side of the outer cylinder 5. The two ends of each elastic body 8 are respectively engaged with the edges of the grooves on the first connecting plate 3 and the second connecting plate 4, while the middle protrudes towards the outer cylinder 5. When the first connecting plate 3 and the second connecting plate 4 approach each other, the middle of the elastic body 8 presses against the outer cylinder 5, causing a certain deformation of the outer cylinder 5, thereby increasing the friction between the outer cylinder 5 and the inner cylinder 6, and increasing the damping of the sliding between the inner cylinder 6 and the outer cylinder 5. Simultaneously, the evenly distributed circumferential elastic bodies 8 ensure a consistent cushioning effect in all directions, improving the reliability of the cushioning structure.
[0039] The outer cylinder 5 has six circumferentially evenly distributed elongated grooves 9 at the end away from the first connecting plate 3. These grooves 9 allow the outer cylinder 5 to deform more easily when compressed by the elastic body 8, thereby increasing the cushioning performance of the elastic telescopic component. When the elastic body 8 compresses the outer cylinder 5, the grooves 9 provide space for the deformation of the outer cylinder 5, enabling it to better adapt to the compression of the elastic body 8 and further enhancing the clamping effect of the clamping mechanism on the elastic telescopic component.
[0040] With the above setup, when the guard plate 1 is impacted, the impact force is transmitted to the buffer, causing the first connecting plate 3 and the second connecting plate 4 to gradually approach each other. At this time, the elastic telescopic component will expand and contract, initially absorbing and dispersing the impact force. Simultaneously, the clamping mechanism will clamp against the middle of the elastic telescopic component, further enhancing its damping. This dual buffering mechanism can effectively reduce the impact force transmitted to the electric vehicle body, minimizing damage to the electric vehicle.
[0041] Example 2:
[0042] Based on Embodiment 1, in order to better limit the elastomer 8, Embodiment 2 includes a limiting sleeve 10 fitted onto the outer cylinder 5. For example... Figure 9 As shown, the limiting sleeve 10 is provided with a strip plate 11 that matches the elongated groove 9. Two adjacent strip plates 11 cooperate to form a limiting part that restricts the central movement range of the elastic body 8. The limiting part can limit the elastic body 8, prevent the elastic body 8 from shifting during operation, and ensure that it can stably perform its function of pressing against the elastic telescopic component. At the same time, the setting of the limiting sleeve 10 also enhances the structural stability of the entire buffer component and improves the reliability of the buffer structure.
[0043] To further restrict the position of the elastomer 8, a notch 12 is provided on the strip plate 11, and a first retaining spring 13 is fitted onto the limiting sleeve 10, the first retaining spring 13 being engaged with the notch 12. Figure 7 As shown, the first retaining ring 13 covers the limiting sleeve 10 and the elastic body 8 to prevent the elastic body 8 from falling off during operation and to ensure the stability of the entire clamping mechanism.
[0044] Example 3:
[0045] Based on Embodiments 1 and 2, energy storage design is implemented in this embodiment. For example... Figure 7 and Figure 8As shown, a limiting rod 14 is fixed on the second connecting plate 4, passing through the inner cylinder 6 and the first connecting plate 3. A spring 7 is sleeved on the limiting rod 14. When the distance between the first connecting plate 3 and the second connecting plate 4 decreases, the spring 7 and the elastic body 8 are compressed, and the limiting rod 14 moves downward, extending further out of the first connecting plate 3. When the limiting rod 14 is fixed in place, preventing it from returning to its original position, the compressed state of the spring 7 and the elastic body 8 is maintained, avoiding rapid rebound of the spring 7 and the elastic body 8, which could cause secondary injury to pedestrians.
[0046] Therefore, this utility model provides a one-way clamping structure for fixing the limiting rod 14 on the side of the first connecting plate 3 away from the second connecting plate 4. The limiting rod 14 has several truncated cones 15, the tips of which are away from the second connecting plate 4. The truncated cones 15 can cooperate with the one-way clamping structure. The one-way clamping structure includes an annular cover 16 fixed to the side of the first connecting plate 3 away from the second connecting plate 4 and a second retaining spring 17 disposed within the annular cover 16. Figure 8 As shown, the limiting rod 14 passes through the annular cover 16, and the second retaining spring 17 is fitted onto the limiting rod 14 and is located within the annular cover 16. When the limiting rod 14 moves downward, the cone 15 causes the second retaining spring 17 to deform within the annular cover 16, allowing it to continue passing through the second retaining spring 17 and moving downward. However, the second retaining spring 17 will lock onto the cone 15, preventing it from retracting. This means that the limiting rod 14 can only move towards the first connecting plate 3. When impacted, during the recovery process of the elastic telescopic member, the limiting rod 14 can prevent excessive rebound.
[0047] To ensure the proper functioning of the limiting rod 14 and the one-way locking structure, a through hole 18 is provided on the connecting frame 2 to accommodate the limiting rod 14 and the one-way locking structure. The through hole 18 prevents interference between the limiting rod 14 and the one-way locking structure and the connecting frame 2, ensuring the integrity and effectiveness of the entire buffer structure. Simultaneously, a honeycomb-shaped buffer layer 19 is provided on the outer side of the guard plate 1. The honeycomb-shaped buffer layer 19 has excellent energy absorption characteristics; when impacted, the honeycomb structure can absorb a large amount of energy through its own deformation, further enhancing the bumper's buffering capacity and better protecting the electric vehicle and rider.
[0048] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A bumper buffer structure for an electric vehicle, characterized in that, include: Protective plates and connecting brackets; Multiple buffer components are disposed between the guard plate and the connecting frame; the buffer components include a first connecting plate, a second connecting plate and an elastic telescopic component, the two ends of the elastic telescopic component are respectively connected to the first connecting plate and the second connecting plate, and a pressing mechanism is provided on the outer side of the elastic telescopic component. When the first connecting plate and the second connecting plate gradually approach each other, the pressing mechanism presses against the middle of the elastic telescopic component. The guard plate is connected to the electric vehicle via a connecting frame.
2. The electric vehicle bumper buffer structure as described in claim 1, characterized in that, The elastic telescopic component includes: The outer cylinder is fixed to the first connecting plate; An inner cylinder is fixed to a second connecting plate, and the end of the inner cylinder away from the second connecting plate is inserted into the outer cylinder. A spring is disposed in the inner cylinder, and the two ends of the spring abut against the first connecting plate and the second connecting plate, respectively.
3. The electric vehicle bumper buffer structure as described in claim 2, characterized in that, The clamping mechanism includes multiple elastic bodies, which are evenly distributed circumferentially on the outer side of the outer cylinder; the two ends of the elastic bodies are respectively clamped on the first connecting plate and the second connecting plate, and the middle part of the elastic body protrudes outward from the outer cylinder.
4. The electric vehicle bumper buffer structure as described in claim 3, characterized in that, The outer cylinder has multiple circumferentially evenly distributed long grooves at one end near the second connecting plate.
5. The electric vehicle bumper buffer structure as described in claim 4, characterized in that, A limiting sleeve is fitted on the outer cylinder, and a strip plate matching the long groove is provided on the limiting sleeve. Two adjacent strip plates cooperate to form a limiting part, and the middle part of the elastic body abuts against the limiting part.
6. The electric vehicle bumper buffer structure as described in claim 5, characterized in that, The strip plate has a notch or groove, and the limiting sleeve is fitted with a first retaining spring, which is engaged with the notch or groove.
7. The electric vehicle bumper buffer structure as described in claim 2, characterized in that, A limiting rod is fixed on the second connecting plate. The limiting rod passes through the inner cylinder and the first connecting plate. A one-way clamping structure for fixing the limiting rod is provided on the side of the first connecting plate away from the second connecting plate.
8. The electric vehicle bumper buffer structure as described in claim 7, characterized in that, The limiting rod is provided with several truncated cones, the tips of which are far away from the second connecting plate. The one-way clamping structure includes an annular cover and a second retaining spring. The limiting rod passes through the annular cover, and the second retaining spring is sleeved on the limiting rod and is located in the annular cover.
9. The electric vehicle bumper buffer structure as described in claim 8, characterized in that, The connecting frame has through holes to accommodate the limiting rod and the one-way clamping structure.
10. The electric vehicle bumper buffer structure as described in claim 1, characterized in that, The outer side of the protective plate is provided with a honeycomb-shaped buffer layer.