Energy-absorbing buffer bumper assembly
By designing an energy-absorbing buffer bumper assembly, and utilizing the deformation of reinforcing plates and energy-absorbing components, as well as the multi-layered buffer structure of the buffer assembly, the problem of existing car rear bumpers being unable to effectively absorb impact forces in rear-end collisions has been solved, thus improving vehicle safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-07
AI Technical Summary
Existing car rear bumpers are ineffective at mitigating and absorbing external impact forces in rear-end collisions, affecting the safety of the vehicle and its occupants.
Design an energy-absorbing and buffering bumper assembly, including a rear bumper body, a crash beam body, a reinforcing plate, an energy-absorbing component, and a buffer assembly. The impact force is absorbed by the connection of the reinforcing plate and the deformation of the energy-absorbing component. Combined with the slider and spring structure of the buffer assembly, the buffering resistance is increased, thus achieving multi-level buffering.
The rear bumper has improved structural strength and impact resistance, effectively absorbing and mitigating external impact forces to protect the safety of drivers and passengers.
Smart Images
Figure CN224090151U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bumper technology, specifically an energy-absorbing and buffering bumper assembly. Background Technology
[0002] The bumper is a safety device that absorbs and mitigates external impacts, protecting the front and rear of the vehicle. With the rapid improvement of the national economy, the number of cars has also increased significantly, making road traffic more complex during rush hour and causing frequent traffic accidents. The rear bumper is located at the very end of the vehicle and is the first part to be hit in a rear-end collision. Its energy absorption and protective performance directly affect whether the vehicle can effectively protect the safety of the occupants in a rear-end collision. Therefore, designing a rear bumper that can effectively mitigate and absorb external impacts in a collision is one of the urgent problems to be solved. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an energy-absorbing buffer bumper assembly to address the above-mentioned deficiencies and solve the problems mentioned in the background art.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: an energy-absorbing buffer bumper assembly, including a rear bumper body and a rear anti-collision beam body, wherein a first reinforcing plate is provided on the rear end face of the rear bumper body, and a second reinforcing plate is provided on the front end face of the anti-collision beam body. A first energy-absorbing component and a second energy-absorbing component are symmetrically arranged between the first and second reinforcing plates, with the second energy-absorbing component located behind the first energy-absorbing component and spaced apart. Connecting plates are symmetrically arranged on both sides between the first and second reinforcing plates. Multiple first buffer assemblies are provided inside the connecting plates. Each first buffer assembly includes a first buffer cylinder provided on the front end face of the second reinforcing plate and a first buffer cylinder provided on the rear end face of the first reinforcing plate. The mounting block comprises a first pressure rod located on the rear end face of the mounting block, a slider and a first buffer spring slidably disposed inside the first buffer cylinder, a hinge on one side of the mounting block, a limiting block located on the same side of the first buffer cylinder and the hinge, a limiting rod disposed between the hinge and the limiting block, and a locking block disposed on the side of the limiting rod near the limiting block. One end of the limiting rod is hinged to the hinge, and a tension spring is disposed between the limiting rod and the mounting block. The side wall of the limiting block is provided with multiple limiting grooves evenly spaced from front to back. The locking block is located inside the limiting grooves. A first driving inclined surface is provided on one side of the rear end face of the locking block, and a second driving inclined surface matching the first driving inclined surface is provided on the rear end face of the limiting groove.
[0005] Furthermore, both the first and second energy-absorbing components are internally provided with multiple support components. The support components include a first support plate and a second support plate disposed at both ends inside the first and second energy-absorbing components, and two inclined support plate groups symmetrically disposed between the first and second support plates. The inclined support plate groups are composed of a first inclined plate and a second inclined plate. One end of the first inclined plate is connected to the first support plate, one end of the second inclined plate is connected to the second support plate, and the other end of the first inclined plate is connected to the other end of the second inclined plate. An obtuse angle is formed between the first inclined plate and the second inclined plate.
[0006] Furthermore, second buffer components are symmetrically arranged on both sides of the first energy-absorbing component. One side of the second buffer component is fixedly connected to the connecting plate, and the second buffer component is arranged at intervals with the first buffer component.
[0007] Furthermore, the second buffer assembly includes a stop block disposed on one side of the first energy-absorbing member, a second buffer cylinder disposed on one side of the connecting plate, a second pressure rod disposed on the side of the stop block away from the first energy-absorbing member, and a second buffer spring sleeved on the second pressure rod and the second buffer cylinder. One side of the second pressure rod extends into the interior of the second buffer cylinder and is slidably connected to the inner wall of the second buffer cylinder. A third driving slope is provided on the side of the first energy-absorbing member near the stop block, and a fourth driving slope matching the third driving slope is provided on the side wall of the stop block.
[0008] Furthermore, a license plate mounting slot is provided on the rear bumper body, and mounting holes are symmetrically provided on the license plate mounting slot (14).
[0009] The beneficial effects of this utility model are:
[0010] This invention utilizes the coordinated arrangement of a first reinforcing plate, a second reinforcing plate, a first energy-absorbing component, a second energy-absorbing component, a connecting plate, and a first buffer assembly. The cooperation of the first reinforcing plate, the second reinforcing plate, and the connecting plate increases the wall thickness of the rear bumper body and the rear anti-collision beam body, enhancing their structural strength and impact resistance. When the rear bumper body collapses, it drives the first and second energy-absorbing components to contact each other, generating deformation to mitigate and absorb external impacts. Simultaneously, the first buffer assembly also works to effectively mitigate and absorb external impacts, thus protecting the rear bumper. For the safety of the occupants, when the mounting block and the first pressure rod are displaced by an impact, the first buffer assembly drives the slider to press against the first buffer spring along the first buffer cylinder, and drives the locking block and the limiting rod to move backward together. The first driving inclined surface abuts against the second driving inclined surface, causing one end of the limiting rod to rotate on the hinge, and driving the tension spring to deform until the locking block corresponds to other limiting grooves at the rear end. The locking block is subjected to the force of the tension spring and re-enters the limiting groove to increase the resistance during buffering, so as to further resist and mitigate external impacts and make its protective performance better. Attached Figure Description
[0011] The foregoing and other objects, features and advantages of this invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.
[0012] Figure 1 This is a perspective view of the present utility model.
[0013] Figure 2 This is a top view of the present invention.
[0014] Figure 3 This is a cross-sectional view of the first energy-absorbing component and the second energy-absorbing component of this utility model.
[0015] Figure 4 This is a schematic diagram of the structure of the first buffer component of this utility model.
[0016] The components include: 1. Rear bumper body; 101. First reinforcing plate; 2. Rear anti-collision beam body; 201. Second reinforcing plate; 3. First energy-absorbing component; 4. Second energy-absorbing component; 5. Connecting plate; 6. First buffer assembly; 601. First buffer cylinder; 602. Mounting block; 603. First pressure rod; 604. Slider; 605. First buffer spring; 606. Hinge; 607. Limiting block; 608. Limiting rod; 609. Locking block; 61. 0. Tension spring; 611. Limiting groove; 612. First driving inclined surface; 613. Second driving inclined surface; 7. Support component; 701. First support plate; 702. Second support plate; 703. First inclined plate; 704. Second inclined plate; 8. Stop block; 9. Second buffer cylinder; 10. Second pressure rod; 11. Second buffer spring; 12. Third driving inclined surface; 13. Fourth driving inclined surface; 14. License plate mounting groove; 15. Mounting hole. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] Reference Figure 1-4As shown, the energy-absorbing buffer bumper assembly includes a rear bumper body 1 and a rear anti-collision beam body 2. A first reinforcing plate 101 is provided on the rear end face of the rear bumper body 1, and a second reinforcing plate 201 is provided on the front end face of the anti-collision beam body 2. The first reinforcing plate 101 and the second reinforcing plate 201 effectively increase the wall thickness of the rear bumper body 1 and the rear anti-collision beam body 2, increasing their structural strength and impact resistance. A first energy-absorbing component 3 and a second energy-absorbing component 4 are symmetrically arranged between the first reinforcing plate 101 and the second reinforcing plate 201. The second energy-absorbing component 4 is located behind the first energy-absorbing component 3 and is spaced apart. Symmetrical connecting plates 5 are arranged on both sides of the rear bumper body 1. When the rear bumper body 1 is subjected to external impact, the connecting plates 5 provide support and further increase its impact resistance. When the rear bumper body 1 collapses, it drives the first energy-absorbing component 3 to move closer to the second energy-absorbing component 4 and forms a compression, causing it to deform and thus mitigate the external impact. Multiple first buffer components 6 are arranged on the inner side of the connecting plates 5. When the first energy-absorbing component 3 moves closer to the second energy-absorbing component 4, the first buffer components 6 are compressed together and work together with the first energy-absorbing component 3 and the second energy-absorbing component 4 to absorb and mitigate the external impact, thus effectively mitigating the external impact and protecting the safety of the occupants.
[0019] The first buffer assembly 6 includes a first buffer cylinder 601 disposed on the front end face of the second reinforcing plate 201, a mounting block 602 disposed on the rear end face of the first reinforcing plate 101, a first pressure rod 603 disposed on the rear end face of the mounting block 602, a slider 604 and a first buffer spring 605 slidably disposed inside the first buffer cylinder 601, a hinge 606 disposed on one side of the mounting block 602, a limiting block 607 disposed on the same side of the first buffer cylinder 601 and the hinge 606, a limiting rod 608 disposed between the hinge 606 and the limiting block 607, and a limiting rod 608 disposed on the limiting rod 608. The positioning rod 608 is positioned near the locking block 609 on the side of the limiting block 607. One end of the first pressure rod 603 extends into the first buffer cylinder 601 and is fixedly connected to the slider 604. One end of the limiting rod 608 is hinged to the hinge 606. A tension spring 610 is provided between the limiting rod 608 and the mounting block 602. The side wall of the limiting block 607 is provided with multiple limiting grooves 611 evenly spaced from front to back. The locking block 609 is located inside the limiting groove 611. A first driving inclined surface 612 is provided on one side of the rear end face of the locking block 609. The rear end face of the limiting groove 611 is provided with a first driving inclined surface 612. When the rear bumper body 1 collapses towards the rear anti-collision beam body 2, the first reinforcing plate 101 drives the mounting block 602 and the first pressure rod 603 to move towards one end of the first buffer cylinder 601, driving the slider to move horizontally along the first buffer cylinder 601 and compressing the first buffer spring 605 to mitigate and absorb external impact. At the same time, it drives the limiting rod 608 to move horizontally along with the mounting block 602. The first driving inclined surface 612 of the locking block 609 abuts against the second driving inclined surface 613, causing one end of the limiting rod 608 to hinge. The connector 606 rotates, causing the tension spring 610 to deform. As the locking block 609 aligns with other limiting grooves at the rear end, the locking block 609 is pulled in the opposite direction by the tension spring 610 and re-enters the limiting groove 611 to increase the resistance during buffering, further resisting and mitigating external impacts and improving its protective performance. Depending on the magnitude of the impact force, the locking block 609 enters the limiting groove 611 at different positions in sequence with the impact force. The second driving ramp 613 is not provided on the last limiting groove 611 to limit the movement stroke of the locking block 609.
[0020] Preferably, both the first energy-absorbing component 3 and the second energy-absorbing component 4 are provided with multiple support components 7. Each support component 7 includes a first support plate 701 and a second support plate 702 disposed at both ends inside the first energy-absorbing component 3 and the second energy-absorbing component 4, and two inclined support plate assemblies symmetrically disposed between the first support plate 701 and the second support plate 702. Each inclined support plate assembly consists of a first inclined plate 703 and a second inclined plate 704. One end of the first inclined plate 703 is connected to the first support plate 701, and one end of the second inclined plate 704 is connected to the second support plate 702. 3. The other end is connected to the other end of the second inclined plate 704, and the first inclined plate 703 and the second inclined plate 704 form an obtuse angle. The support member 7 increases the structural stability and structural strength of the first energy-absorbing member 3 and the second energy-absorbing member 4, and increases their impact resistance. When deformation occurs, as the first support plate 701 moves closer to the second support plate 702, the angle between the first inclined plate 703 and the second inclined plate 704 gradually decreases, and deformation occurs to further absorb and mitigate external impacts, thereby reducing the impact force on the rear anti-collision beam body 2 and protecting the safety of the interior occupants.
[0021] Preferably, the first energy-absorbing component 3 is symmetrically provided with second buffer components on both sides. One side of the second buffer component is fixedly connected to the connecting plate 5. The second buffer component and the first buffer component 6 are arranged at intervals. Specifically, there can be four first buffer components, which are symmetrically arranged in pairs between the first reinforcing plate 101 and the second reinforcing plate 201. The second buffer components are located on one side between the first buffer components 6.
[0022] Preferably, the second buffer assembly includes a stop block 8 disposed on one side of the first energy-absorbing member 3, a second buffer cylinder 9 disposed on one side of the connecting plate 5, a second pressure rod 10 disposed on the side of the stop block 8 away from the first energy-absorbing member 3, and a second buffer spring 11 sleeved on the second pressure rod 10 and the second buffer cylinder 9. One side of the second pressure rod 10 extends into the interior of the second buffer cylinder 9 and is slidably connected to the inner wall of the second buffer cylinder 9. A third driving ramp 12 is provided on the side of the first energy-absorbing member 3 near the stop block 8, and a fourth driving ramp 13 matching the third driving ramp 12 is provided on the side wall of the stop block 8. The third driving ramp 12 and the fourth driving ramp 13 abut against each other. When the first energy-absorbing member 3 approaches the second energy-absorbing member 4, the third driving ramp 12 and the fourth driving ramp 13 cooperate to push the stop block 8. The stop block 8 drives the second pressure rod 10 to move horizontally along the second buffer cylinder 9, and the stop block 8 squeezes the second buffer spring 11 to further mitigate and absorb external impacts, thereby increasing its protective performance and protecting the safety of the occupants.
[0023] Preferably, the rear bumper body has a license plate mounting slot 14, and the license plate mounting slot 14 has symmetrical mounting holes 15. The license plate mounting frame is fixed inside the license plate mounting slot 14 by bolts engaging with the mounting holes 15.
[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. An energy-absorbing buffer bumper assembly, comprising a rear bumper body (1) and a rear anti-collision beam body (2), characterized in that: The rear bumper body (1) is provided with a first reinforcing plate (101) at its rear end, and the anti-collision beam body (2) is provided with a second reinforcing plate (201) at its front end. A first energy-absorbing component (3) and a second energy-absorbing component (4) are symmetrically arranged between the first reinforcing plate (101) and the second reinforcing plate (201). The second energy-absorbing component (4) is located behind the first energy-absorbing component (3) and is arranged at intervals. A connecting plate (5) is symmetrically arranged on both sides between the first reinforcing plate (101) and the second reinforcing plate (201). A plurality of first buffer components (6) are provided inside the connecting plate (5). The first buffer component (6) includes a first buffer cylinder (601) provided at the front end of the second reinforcing plate (201), a mounting block (602) provided at the rear end of the first reinforcing plate (101), a first pressure rod (603) provided at the rear end of the mounting block (602), a slider (604) slidably provided inside the first buffer cylinder (601), and a first buffer. The system includes a spring (605), a hinge (606) on one side of the mounting block (602), a limiting block (607) on the same side of the first buffer cylinder (601) and the hinge (606), a limiting rod (608) between the hinge (606) and the limiting block (607), and a locking block (609) on the side of the limiting rod (608) near the limiting block (607). One end of the limiting rod (608) is hinged to the hinge (606). A tension spring (610) is provided between the positioning rod (608) and the mounting block (602). The side wall of the limiting block (607) is provided with a plurality of limiting grooves (611) evenly spaced from front to back. The locking block (609) is located inside the limiting groove (611). A first driving inclined surface (612) is provided on one side of the rear end face of the locking block (609). A second driving inclined surface (613) matching the first driving inclined surface (612) is provided on the rear end face of the limiting groove (611).
2. The energy-absorbing buffer bumper assembly according to claim 1, characterized in that: Both the first energy-absorbing component (3) and the second energy-absorbing component (4) are provided with multiple support components (7). Each support component (7) includes a first support plate (701) and a second support plate (702) disposed at both ends inside the first energy-absorbing component (3) and the second energy-absorbing component (4), and two inclined support plate groups symmetrically disposed between the first support plate (701) and the second support plate (702). Each inclined support plate group is composed of a first inclined plate (703) and a second inclined plate (704). One end of the first inclined plate (703) is connected to the first support plate (701), and one end of the second inclined plate (704) is connected to the second support plate (702). The other end of the first inclined plate (703) is connected to the other end of the second inclined plate (704), and an obtuse angle is formed between the first inclined plate (703) and the second inclined plate (704).
3. The energy-absorbing buffer bumper assembly according to claim 1, characterized in that: The first energy-absorbing component (3) is symmetrically provided with second buffer components on both sides. One side of the second buffer component is fixedly connected to the connecting plate (5). The second buffer component and the first buffer component (6) are arranged at intervals.
4. The energy-absorbing buffer bumper assembly according to claim 3, characterized in that: The second buffer assembly includes a stop (8) disposed on one side of the first energy-absorbing member (3), a second buffer cylinder (9) disposed on one side of the connecting plate (5), a second pressure rod (10) disposed on the side of the stop (8) away from the first energy-absorbing member (3), and a second buffer spring (11) sleeved on the second pressure rod (10) and the second buffer cylinder (9). One side of the second pressure rod (10) extends into the interior of the second buffer cylinder (9) and is slidably connected to the inner wall of the second buffer cylinder (9). A third driving slope (12) is provided on the side of the first energy-absorbing member (3) near the stop (8), and a fourth driving slope (13) matching the third driving slope (12) is provided on the side wall of the stop (8).
5. The energy-absorbing buffer bumper assembly according to claim 1, characterized in that: The rear bumper body has a license plate mounting slot (14), and mounting holes (15) are symmetrically provided on the license plate mounting slot (14).