Automobile bumper structure
By using detachable connecting components and an extension rod structure, the problem of traditional bumpers being difficult to quickly disassemble and adjust in length is solved, enabling quick replacement and adaptation to the needs of different vehicle models, thus improving the convenience and practicality of the bumper.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-07
AI Technical Summary
Existing car bumpers are difficult to remove and replace quickly in moderate to severe collisions, increasing repair difficulty and cost, and are not suitable for different car body sizes.
It employs detachable connecting components, including connecting pins, locking slots, cones, and hand-tightening screws, to achieve quick locking and unlocking; an extension rod and a return spring allow for adjustment of the anti-collision bar length.
It improves the convenience and practicality of the bumper, allowing for quick replacement and length adjustment to suit different vehicle models, reducing maintenance time and costs.
Smart Images
Figure CN224090153U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bumper technology, and in particular to a car bumper structure. Background Technology
[0002] With the continuous development of the automotive industry and the constant improvement of traffic safety standards, the ability of vehicles to protect occupants during collisions has become a key design focus. As one of the most important buffer devices in the vehicle body structure, the car bumper not only bears the structural function of mitigating collision impact and protecting the front and rear of the vehicle, but also serves decorative and aerodynamic purposes. In the event of a minor collision, the bumper should possess a certain capacity for deformation and energy absorption; in a severe collision, it needs to minimize damage to the engine compartment and passenger compartment through structural optimization. Therefore, the structural optimization and ease of maintenance of bumpers have become key research directions in current automotive structural design.
[0003] In existing technologies, common car bumpers are mostly made of high-strength plastic or metal and are typically connected to the vehicle frame or energy-absorbing box through welding, bolting, or embedded connections. Energy-absorbing components such as anti-collision beams or buffer cores are located inside or behind the bumper, playing a role in energy absorption and cushioning. When a vehicle collides, the bumper absorbs part of the impact force through structural deformation to reduce damage transmission and maintains overall strength through its connection with the vehicle body. Although some high-end models use replaceable structural components to improve maintenance efficiency, most mid-to-low-end models still mainly use non-removable structures, with structural designs prioritizing cost control and manufacturing convenience.
[0004] However, existing bumpers still have significant limitations in practical use. When a vehicle is involved in a moderate to severe collision, traditional bumpers, due to their welding or fixed connections, make it difficult to quickly disassemble and replace the connecting parts. Typically, the entire bumper, along with the connecting parts, needs to be cut or replaced, which not only increases the difficulty and time cost of repairs but also raises maintenance expenses. Especially in scenarios with limited workshop conditions or where a vehicle needs to be quickly restored to its usable state, the traditional bumper structure is not flexible enough to meet the practical needs of rapid replacement. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a car bumper structure, which aims to improve the problem that traditional anti-collision bars are connected by welding and other methods, requiring cutting and replacement of the whole structure when a vehicle is involved in a collision, which is quite inconvenient.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a car bumper structure, including a decorative cover, a main beam fixedly connected inside the decorative cover, a connecting plate provided inside the decorative cover, an anti-collision bar passing through the connecting plate, an mounting block fixedly connected to one side of the main beam, and a connecting component provided between the connecting plate and the mounting block;
[0007] The connecting assembly includes a connecting pin, which is slidably connected to the connecting plate and passes through the mounting block. A locking block is fixedly connected inside the mounting block, and a locking groove is formed inside the locking block. A tapered column is slidably connected inside the connecting pin, and a hand-tightening screw is threaded inside the connecting pin. One end of the hand-tightening screw is fixedly connected to one end of the tapered column. A steel ball is provided inside the connecting pin, and the steel ball engages with the locking groove. A limit component is provided on the outer wall of the connecting pin.
[0008] As a further description of the above technical solution:
[0009] The limiting component includes a limiting ring, the inner wall of which is fixedly connected to the outer wall of the connecting pin, and one side of the limiting ring is in contact with the outer wall of the connecting plate.
[0010] As a further description of the above technical solution:
[0011] One end of the anti-collision bar is fixedly connected to an extension bar, and the outer wall of the extension bar is slidably connected to an anti-collision bar II.
[0012] As a further description of the above technical solution:
[0013] The second anti-collision bar has a connecting shaft that is slidably connected inside, and one end of the connecting shaft is rotatably connected to a buckle plate.
[0014] As a further description of the above technical solution:
[0015] A positioning post is fixedly connected to the other end of the connecting shaft, and a return spring is sleeved on the outer wall of the connecting shaft.
[0016] As a further description of the above technical solution:
[0017] The extension rod has a positioning groove inside, which fits into the positioning post.
[0018] As a further description of the above technical solution:
[0019] One end of the reset spring is fixedly connected to one end of the positioning post, and the other end of the reset spring is fixedly connected to the inside of the second anti-collision bar.
[0020] As a further description of the above technical solution:
[0021] The positioning slots are arranged in a linear array inside the extension rod.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, firstly, the hand-tightening screw is turned to drive the cone column into the connecting pin, so that the outer wall of the cone column fits against the steel ball, causing the steel ball to extend out of the connecting pin and embed into the locking groove for locking. This achieves the effect of facilitating the replacement of the bumper, solving the problem that when a vehicle is involved in a collision, the traditional bumper is connected by welding and other methods, requiring cutting and replacement of the whole, which is inconvenient. This improves the convenience of the bumper.
[0024] 2. In this utility model, the first anti-collision bar and the second anti-collision bar are connected by an extension bar; through the positioning post at one end of the connecting shaft, and under the tension support of the return spring, the positioning post is embedded in the positioning groove, which achieves the effect of facilitating the adjustment of the length of the anti-collision bar, solves the problem of needing to customize anti-collision bars for different sizes of car bodies, and improves the practicality of the bumper. Attached Figure Description
[0025] Figure 1 This is a perspective view of a car bumper structure proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the main beam structure of a car bumper structure proposed in this utility model.
[0027] Figure 3 This is a schematic diagram of the internal structure of the connecting pin in a car bumper structure proposed in this utility model.
[0028] Figure 4 This is a schematic diagram of an extension rod structure for an automobile bumper proposed in this utility model.
[0029] Figure 5 This is a schematic diagram of the buckle structure of an automobile bumper proposed in this utility model.
[0030] Legend:
[0031] 1. Decorative cover; 2. Main beam; 3. Mounting block; 4. Connecting plate; 5. Anti-collision bar one; 6. Locking block; 7. Locking groove; 8. Connecting pin; 9. Limiting ring; 10. Conical column; 11. Hand screw; 12. Steel ball; 13. Anti-collision bar two; 14. Extension rod; 15. Positioning groove; 16. Connecting shaft; 17. Positioning post; 18. Buckle plate; 19. Return spring. Detailed Implementation
[0032] 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.
[0033] Reference Figures 1-3 This utility model provides an embodiment of an automobile bumper structure, including a decorative cover 1. The decorative cover 1 is used to cover and beautify the external structure of the bumper, and at the same time, it plays a preliminary buffering and protection role. A main beam 2 is fixedly connected inside the decorative cover 1. The main beam 2 serves as a load-bearing frame component, used to provide longitudinal stiffness and transmit collision loads, thereby enhancing the overall structural strength. A connecting plate 4 is provided inside the decorative cover 1. The connecting plate 4 is used to effectively connect the anti-collision structure and the main beam 2, thereby improving the structural stability. An anti-collision rod 5 is inserted inside the connecting plate 4. The anti-collision rod 5 is used to absorb part of the collision energy and transfer it to the main beam 2, which helps to disperse the impact force. A mounting block 3 is fixedly connected to one side of the main beam 2. The mounting block 3 is used to provide a rigid mounting base for the connecting components, ensuring a stable and reliable connection. A connecting component is provided between the connecting plate 4 and the mounting block 3.
[0034] The connecting assembly includes a connecting pin 8, which serves as a detachable connector for quick assembly and positioning between the connecting plate 4 and the mounting block 3, facilitating subsequent maintenance and replacement. The connecting pin 8 slides within the connecting plate 4, providing guidance and mobility during assembly. The connecting pin 8 passes through the mounting block 3, ensuring structural integrity and load path continuity. A locking block 6 is fixedly connected inside the mounting block 3, providing a locking mechanism for the connecting pin 8. Their positional relationships are as follows: To facilitate control of the connection state, the locking block 6 has a locking groove 7 inside. The locking groove 7 is used to engage with the locking structure (such as the steel ball 12) on the connecting pin 8 to ensure resistance to pull-out in the connection state. A conical column 10 is slidably connected inside the connecting pin 8. The conical column 10 is used to push the steel ball 12 during the locking operation, causing the steel ball 12 to expand outward to cooperate with the locking groove 7 and complete the locking process. A hand-tightening screw 11 is threaded inside the connecting pin 8. The hand-tightening screw 11 acts as a driving component. The user rotates the hand-tightening screw 11 to lock the conical column 10. The axial movement within the connecting pin 8 controls the extension or retraction of the steel ball 12. One end of the hand-tightening screw 11 is fixedly connected to one end of the tapered column 10, converting the rotational motion of the threaded screw into the linear movement of the tapered column 10. The connecting pin 8 contains the steel ball 12, which is ejected by the tapered column 10 and embedded in the locking groove 7, achieving a stable connection and facilitating quick disassembly by retracting the tapered column 10. The engagement of the steel ball 12 with the locking groove 7 provides a point-contact quick-locking structure, enhancing connection reliability and facilitating assembly and disassembly. A limit switch is provided on the outer wall of the connecting pin 8. The limiting component is used to prevent the connecting pin 8 from structural failure due to excessive insertion or withdrawal during sliding. The limiting component includes a limiting ring 9, which acts as a stop for the connecting pin 8 to prevent it from falling off due to excessive axial displacement during insertion and removal. The inner wall of the limiting ring 9 is fixedly connected to the outer wall of the connecting pin 8, so that the limiting ring 9 can play a positioning and limiting function when the connecting pin 8 moves. One side of the limiting ring 9 is in contact with the outer wall of the connecting plate 4, forming a contact positioning interface when assembled in place, preventing the connecting pin 8 from continuing to move forward axially, and realizing physical limiting protection.
[0035] Reference Figure 4 and Figure 5One end of the anti-collision bar 5 is fixedly connected to an extension rod 14, which is used to adjust the length of the anti-collision bar. One end of the extension rod 14 is fixedly connected to the anti-collision bar 5 to ensure the axial stability of the adjustment mechanism. The outer wall of the extension rod 14 is slidably connected to an anti-collision bar 13, which can slide along the extension rod 14. Through telescopic cooperation, the length of the bumper can be adaptively adjusted to meet the structural requirements of different vehicle models. The inner wall of the anti-collision bar 13 is slidably connected to a connecting shaft 16, which acts as a control component and can move within the anti-collision bar 13 to facilitate the operation of the positioning structure to achieve locking and unlocking functions. One end of the connecting shaft 16 is rotatably connected to a buckle plate 18, which is used to drive the connecting shaft 16 to rotate. During the adjustment process, the buckle plate 18 acts as an operation trigger, which facilitates quick manual release or fixing of the positioning state. The other end of the connecting shaft 16 is fixedly connected to a positioning post 17, which is inserted into the positioning groove 15 on the extension rod 14 when moving to achieve position locking, ensuring that the anti-collision bar can maintain a stable position after adjustment and avoiding displacement during use. The outer wall of the connecting shaft 16 is fitted with a... A return spring 19 automatically pushes the connecting shaft 16 back to its original position after release, causing the positioning pin 17 to re-embed in the positioning groove 15, thus achieving an automatic reset and locking function and improving operational convenience and safety. The extension rod 14 has a positioning groove 15 inside, which is used to limit and position the positioning pin 17, forming the basis for the multi-level adjustable structure. The positioning groove 15 engages with the positioning pin 17; when the anti-collision bar is adjusted to the target length, the positioning pin 17 inserts into the corresponding positioning groove 15, preventing it from being damaged by external forces. With the sliding release mechanism, one end of the return spring 19 is fixedly connected to one end of the positioning post 17, so that the spring generates a continuous return tension, pushing the positioning post 17 towards the positioning groove 15. The other end of the return spring 19 is fixedly connected to the inside of the second anti-collision bar 13, forming a stable pre-tightening force path, ensuring that the positioning post 17 automatically remains locked in the non-operational state. The positioning grooves 15 are arranged in a linear array inside the extension rod 14, providing multiple position selections to achieve stepped adjustment of the anti-collision bar length to meet the needs of different vehicle models or usage requirements.
[0036] Working principle: When using this car bumper structure, firstly, when the connecting plate 4 and the mounting block 3 are assembled, the connecting plate 4 is attached to one side of the mounting block 3. Then, the connecting pin 8 is inserted into the connecting plate 4 and the mounting block 3 through the connecting plate 4. Then, the connecting pin 8 is embedded in the locking block 6. Then, the hand screw 11 is turned to drive the cone 10 to extend into the connecting pin 8, so that the outer wall of the cone 10 is attached to the steel ball 12, which drives the steel ball 12 to extend out of the connecting pin 8 and embed into the locking groove 7 to lock, thus achieving the effect of facilitating the replacement of the bumper.
[0037] When it is necessary to adjust the distance between anti-collision bar 15 and anti-collision bar 23, anti-collision bar 15 and anti-collision bar 23 are connected by extension bar 14. By moving the buckle plate, the connecting shaft moves outward, and the positioning post 17 disengages from the positioning groove 15. Select the appropriate length of the extension bar 14 exposed, and then make the buckle plate 18 and the connecting shaft 16 at 90°. The positioning post 17 at one end of the connecting shaft 16 is supported by the tension of the return spring 19, so that the positioning post 17 is embedded in the positioning groove 15, and the extension bar 14 and anti-collision bar 23 are locked together, which achieves the effect of facilitating the adjustment of the length of the anti-collision bar.
[0038] 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 car bumper structure, including a decorative cover (1), characterized in that: The decorative cover (1) is fixedly connected to a main beam (2), and a connecting plate (4) is provided inside the decorative cover (1). A first anti-collision rod (5) is passed through the connecting plate (4). An installation block (3) is fixedly connected to one side of the main beam (2). A connecting component is provided between the connecting plate (4) and the installation block (3). The connecting assembly includes a connecting pin (8), which is slidably connected to the connecting plate (4). The connecting pin (8) passes through the mounting block (3). A locking block (6) is fixedly connected inside the mounting block (3). A locking groove (7) is provided inside the locking block (6). A conical column (10) is slidably connected inside the connecting pin (8). A hand screw (11) is threaded inside the connecting pin (8). One end of the hand screw (11) is fixedly connected to one end of the conical column (10). A steel ball (12) is provided inside the connecting pin (8). The steel ball (12) is fitted into the locking groove (7). A limit component is provided on the outer wall of the connecting pin (8).
2. The automobile bumper structure according to claim 1, characterized in that: The limiting component includes a limiting ring (9), the inner wall of which is fixedly connected to the outer wall of the connecting pin (8), and one side of the limiting ring (9) is in contact with the outer wall of the connecting plate (4).
3. The automobile bumper structure according to claim 1, characterized in that: One end of the anti-collision rod (5) is fixedly connected to an extension rod (14), and the outer wall of the extension rod (14) is slidably connected to an anti-collision rod (13).
4. The automobile bumper structure according to claim 3, characterized in that: The anti-collision bar 2 (13) has a connecting shaft (16) slidably connected inside, and a buckle plate (18) is rotatably connected to one end of the connecting shaft (16).
5. The automobile bumper structure according to claim 4, characterized in that: The other end of the connecting shaft (16) is fixedly connected to a positioning column (17), and a return spring (19) is sleeved on the outer wall of the connecting shaft (16).
6. The automobile bumper structure according to claim 3, characterized in that: The extension rod (14) has a positioning groove (15) inside, which is fitted with the positioning post (17).
7. The automobile bumper structure according to claim 5, characterized in that: One end of the reset spring (19) is fixedly connected to one end of the positioning post (17), and the other end of the reset spring (19) is fixedly connected inside the anti-collision rod (13).
8. A car bumper structure according to claim 6, characterized in that: The positioning slots (15) are arranged in a straight array inside the extension rod (14).