Bumper profile for automobile

Abstract

The utility model relates to the field of bumpers, in particular to an automobile bumper profile which comprises a bumper outer shell, a bumper top cover, a bumper bottom shell and a filling assembly. According to the utility model, the filling assembly used for forming the buffer layer to reduce damage to a vehicle body and passengers caused by overlarge local impact force is arranged in the bumper shell; shape memory alloy blocks and honeycomb-shaped aluminum foam composite blocks in the bumper shell and the filling assembly are jointly combined to form a multi-layer buffering structure, so that damage to a vehicle body and passengers caused by too large local impact force can be effectively reduced, and a bumper top cover used for assisting in fixing the filling assembly and being connected with a vehicle head is installed at the top end of the bumper shell. The bumper bottom shell used for preventing the bottom from being scratched and assisting in fixing the filling assembly is installed at the bottom end of the bumper shell, the bumper top cover and the bottom shell assist in fixing the filling assembly, it is guaranteed that the position of the filling assembly in the bumper shell is stable, displacement cannot occur in the collision process, and the reliability of the buffering effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of bumpers, in particular to a bumper profile for automobiles. Background Art

[0002] The bumper is mainly used as a simple protective device. Its basic function is to prevent the front and rear of the vehicle from being directly damaged during a low-speed collision. The automotive bumper profile is an important safety component of the vehicle body and plays a vital role in the vehicle's driving process.

[0003] Most existing automotive bumper profiles are filled with a single material, which often has limitations. Since it relies on only one material, its energy absorption curve is relatively simple, and it cannot provide flexible and effective energy absorption for collisions of different intensities and types. In the face of low-speed collisions, it may not be able to fully cushion the impact force, resulting in unnecessary damage to the vehicle's exterior parts; in high-speed collision scenarios, a single material may quickly reach its energy absorption limit, causing the remaining collision energy to be directly transmitted to the vehicle body and passengers, increasing the risk of injury to people inside the vehicle.

[0004] Therefore, in order to address the problem that the above-mentioned existing automobile bumper profiles are mostly filled with a single material, which has limitations. Because they rely on only one material, the energy absorption curve is single, and they cannot flexibly and effectively absorb the energy of collisions of different intensities and types, a automobile bumper profile can be designed to combine the shape memory alloy blocks in the bumper shell and the filling component with the honeycomb aluminum foam composite blocks to form a multi-level buffer structure. Utility Model Content

[0005] In order to overcome the problem that existing automobile bumper profiles are mostly filled with a single material, which has limitations, because they rely on only one material, the energy absorption curve is single, and they cannot flexibly and effectively absorb the energy of collisions of different intensities and types.

[0006] The technical solution of the utility model is: a bumper profile for automobiles, comprising a bumper shell, a bumper top cover, a bumper bottom shell and a filling assembly; a filling assembly for forming a buffer layer to reduce damage to the vehicle body and passengers caused by excessive local impact force is installed inside the bumper shell, a bumper top cover for assisting in fixing the filling assembly and connecting to the front of the vehicle is installed at the top of the bumper shell, a bumper bottom shell for preventing bottom scratches and assisting in fixing the filling assembly is installed at the bottom of the bumper shell, the filling assembly comprises a shape memory alloy block, a honeycomb aluminum foam composite block, a back plate and a mounting block; shape memory alloy blocks are connected and installed on both sides of the honeycomb aluminum foam composite block.

[0007] Preferably, the honeycomb aluminum foam composite block and the shape memory alloy block in the filling component together constitute a multi-level buffer structure. The honeycomb aluminum foam composite block itself has good energy absorption characteristics, and its honeycomb structure can effectively disperse the collision energy. When it is hit, it absorbs the impact force through the deformation of the honeycomb wall and the compression of the air. The addition of the shape memory alloy block further enhances the buffering effect. The shape memory alloy can return to its original shape after being deformed by the impact. This characteristic enables it to continue to play a buffering role during multiple collisions. Working together with the honeycomb aluminum foam composite block, it can effectively reduce the damage to the vehicle body and passengers caused by excessive local impact force. The bumper top cover assists in fixing the filling component to ensure The position of the filling component in the bumper shell is stable and will not be displaced during a collision, ensuring the reliability of the buffering effect. At the same time, the top cover is connected to the front of the car, which enhances the overall connection strength between the bumper and the body, making it less likely for the bumper to separate from the body when hit. On the one hand, the bumper bottom shell can prevent scratches on the bottom and protect the bumper from damage from below, such as friction when passing through rough roads or parking; on the other hand, it also assists in fixing the filling component, further improving the stability of the entire bumper structure. A headlight mounting groove is set on the shape memory alloy block, cleverly integrating the headlight mounting function with the filling component, which not only makes rational use of space, but also ensures the stability and safety of the headlight during a collision.

[0008] Preferably, a back plate is installed at the outer end of the honeycomb aluminum foam composite block, and two groups of mounting blocks are vertically and symmetrically installed at the outer end of the back plate, and two groups of connecting grooves are symmetrically opened on the mounting blocks.

[0009] Preferably, a headlight mounting groove is provided at the center of the outer end of each shape memory alloy block, and a plurality of top cover mounting holes for connecting to the bumper top cover are provided at the top of each shape memory alloy block.

[0010] Preferably, two groups of headlight holes are symmetrically provided at the outer end of the bumper shell, and a car logo mounting groove is provided at the center of the outer end of the bumper shell.

[0011] Preferably, a connecting plug plate is symmetrically installed at one end of the bumper shell away from the headlight hole, and a license plate mounting groove is provided at the outer end of the bumper shell at the bottom end of the car logo mounting groove.

[0012] Preferably, fixing screws are installed at the corners around the license plate installation slot, and threaded holes for installing the fixing screws are opened at the corners around the license plate installation slot.

[0013] Preferably, three groups of connecting and fixing plates are linearly installed on the outer end of the bumper top cover, and three groups of screw fixing holes are linearly passed through the top of the connecting and fixing plates.

[0014] Beneficial effects of the utility model:

[0015] 1. The filling component adopts a combination of shape memory alloy blocks and honeycomb aluminum foam composite blocks. Unlike most existing bumpers filled with a single material, this combination can achieve multi-stage and multi-mode energy absorption. When a collision occurs, the honeycomb aluminum foam composite block plays the first role. Its unique honeycomb structure can disperse the collision energy to each honeycomb unit and absorb energy through the compression deformation of the aluminum foam, while the shape memory alloy block further absorbs and buffers the energy. Its ability to return to its original shape after being deformed by impact enables it to continue to play a buffering role during multiple collisions. For example, in a moderate collision, the honeycomb aluminum foam composite block may absorb the initial impact force, so that the collision energy is initially dispersed and reduced. The shape memory alloy block then bears and further buffers the remaining energy, thereby effectively reducing the impact force transmitted to the vehicle body and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the bumper shell structure of a bumper profile for an automobile of the present utility model;

[0017] Figure 2 Shown is a schematic diagram of the overall structure of a bumper profile for an automobile according to the present utility model;

[0018] Figure 3 Shown is a schematic diagram of a bumper top cover structure of a bumper profile for an automobile according to the present invention;

[0019] Figure 4 Shown is a schematic diagram of the overall exploded structure of a bumper profile for an automobile according to the present invention.

[0020] Explanation of the accompanying drawings: 1. Bumper shell; 2. Bumper top cover; 3. Bumper bottom shell; 101. Headlight hole; 102. Car logo mounting slot; 103. Fixing screw; 104. License plate mounting slot; 105. Connecting plug plate; 201. Connecting fixing plate; 202. Screw fixing hole; 401. Shape memory alloy block; 402. Headlight mounting slot; 403. Top cover mounting hole; 404. Honeycomb aluminum foam composite block; 405. Back plate; 406. Connecting slot; 407. Mounting block. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4The utility model provides an embodiment: a bumper profile for an automobile, comprising a bumper shell 1, a bumper top cover 2, a bumper bottom shell 3 and a filling component; a filling component is installed inside the bumper shell 1 to form a buffer layer to reduce the damage caused by excessive local impact to the vehicle body and passengers; a bumper top cover 2 is installed on the top of the bumper shell 1 to assist in fixing the filling component and connecting to the front of the vehicle; a bumper bottom shell 3 is installed on the bottom of the bumper shell 1 to prevent the bottom from being scratched and to assist in fixing the filling component; the filling component includes a shape memory alloy Block 401, honeycomb aluminum foam composite block 404, back plate 405 and mounting block 407; shape memory alloy blocks 401 are connected and installed on both sides of the honeycomb aluminum foam composite block 404. The honeycomb aluminum foam composite block 404 and the shape memory alloy block 401 in the filling component together constitute a multi-level buffer structure. The honeycomb aluminum foam composite block 404 itself has good energy absorption characteristics. Its honeycomb structure can effectively disperse collision energy. When it is hit, it absorbs the impact force through the deformation of the honeycomb wall and the compression of the air. The shape memory alloy block 404 The addition of 01 further enhances the cushioning effect. The shape memory alloy can return to its original shape after being deformed by an impact. This property enables it to continue to provide a cushioning effect during multiple collisions. Working in conjunction with the honeycomb aluminum foam composite block 404, it can effectively reduce the damage to the vehicle body and passengers caused by excessive local impact forces. The bumper top cover 2 helps to fix the filling component, ensuring its stable position within the bumper shell 1 and preventing displacement during a collision, thereby ensuring the reliability of the cushioning effect. At the same time, the bumper top cover 2 connects to the front of the vehicle, strengthening the overall connection strength between the bumper and the body, making it less likely to separate from the body during an impact. The bumper bottom shell 3 not only prevents scratches on the bottom and protects the bumper from damage from below, such as friction when driving on rough roads or parking, but also helps to fix the filling component, further improving the stability of the entire bumper structure. The headlight mounting slot 402 is provided on the shape memory alloy block 401, cleverly integrating the headlight mounting function with the filling component, which not only rationally utilizes space but also ensures the stability and safety of the headlight during a collision.

[0023] See also Figure 2-Figure 4In this embodiment, a back plate 405 is installed at the outer end of the honeycomb aluminum foam composite block 404, and two groups of mounting blocks 407 are vertically and symmetrically installed at the outer end of the back plate 405. Two groups of connecting grooves 406 are symmetrically opened on the mounting blocks 407. The design of the mounting blocks 407 provides a special connection structure between the bumper and the front of the vehicle. By cooperating with the corresponding components of the front of the vehicle, this connection method can withstand large tension, pressure and shear forces. A headlight mounting groove 402 is opened at the center of the outer end of the shape memory alloy block 401, and a plurality of groups of top cover mounting holes 403 for connecting to the bumper top cover 2 are opened at the top of the shape memory alloy block 401. The top cover mounting holes 403 for connecting to the bumper top cover 2 opened at the top of the shape memory alloy block 401 enhance the connection strength between the filling component and the top cover.

[0024] See also Figure 1-Figure 2 In this embodiment, two sets of headlight holes 101 are symmetrically opened at the outer end of the bumper shell 1, and a car logo mounting groove 102 is opened at the center of the outer end of the bumper shell 1. The design of the headlight holes 101 and the car logo mounting groove 102 provides convenience for the installation of the headlights and the car logo. The installer can directly align the headlights with the headlight holes 101 for installation without the need for a complicated positioning process, thereby improving the installation efficiency. Similarly, the car logo can be accurately placed in the car logo mounting groove 102. The bumper shell 1 is symmetrically installed at one end away from the headlight holes 101. There is a connecting plate 105, and a license plate mounting groove 104 is provided at the outer end of the bumper shell 1 at the bottom of the vehicle logo mounting groove 102. The symmetrical design of the connecting plate 105 ensures uniform force. During the driving process of the vehicle, whether it is the vibration, acceleration, and inertia force generated by braking during normal driving, or the impact force in the event of a collision, the connecting plate 105 can firmly connect the bumper to the vehicle body. This stable connection is essential to maintaining the normal function of the bumper, ensuring that it will not fail due to looseness when it is needed to play a protective role.

[0025] See also Figure 1-Figure 3 In this embodiment, fixing screws 103 are installed at the corners around the license plate mounting slot 104, and threaded holes for installing the fixing screws 103 are opened at the corners around the license plate mounting slot 104. Fixing screws 103 are installed at the corners around the license plate mounting slot 104. Through the cooperation of the screws and the threaded holes, the license plate can be tightly fixed in the mounting slot. Three groups of connecting and fixing plates 201 are linearly installed at the outer end of the bumper top cover 2. Three groups of screw fixing holes 202 are linearly passed through the top of the connecting and fixing plates 201. The design of the connecting and fixing plates 201 and the screw fixing holes 202 makes the installation of the bumper top cover 2 simple and quick. During the automobile manufacturing process, the installer can fix it to the corresponding part of the front of the car by passing the screws through the screw fixing holes 202.

[0026] During operation, when a vehicle collides, the bumper is the first line of defense. If it is a low-speed collision, the bumper shell 1 first bears the impact force, and then transmits the force to the internal filling component. The honeycomb aluminum foam composite block 404 in the filling component begins to play a role. Its honeycomb structure absorbs and disperses energy through its own deformation, so that the impact force generated by the collision will not be concentrated on a certain point, reducing the local impact. The shape memory alloy blocks 401 on both sides will also deform under the action of the impact force. Due to its shape memory characteristics, this deformation can buffer energy to a certain extent, and has a tendency to return to its original shape after the collision, further enhancing the buffering effect, thereby having The bumper shell 1 may be tightly connected to the bumper top cover 2, the bumper bottom shell 3 and the filling component, so that the entire bumper structure can still work together. The filling component will continue to absorb and disperse a large amount of collision energy. The shape memory alloy block 401 and the honeycomb aluminum foam composite block 404 will give full play to their energy absorption and buffering functions, and try to reduce the impact force transmitted to the vehicle body and the passengers in the vehicle to protect the safety of the people in the vehicle. At the same time, the connecting plate 105 ensures a stable connection between the bumper and the vehicle body, so that the bumper will not separate from the vehicle body when subjected to a huge impact force, thereby maintaining its protective function.

[0027] Through the above steps, the honeycomb aluminum foam composite block 404 and the shape memory alloy block 401 in the filling component together constitute a multi-level buffer structure. The honeycomb aluminum foam composite block 404 itself has good energy absorption characteristics, and its honeycomb structure can effectively disperse collision energy. When impacted, the impact force is absorbed by the deformation of the honeycomb wall and the compression of the air. The addition of the shape memory alloy block 401 further enhances the buffering effect. The shape memory alloy can return to its original shape after being deformed by an impact. This characteristic enables it to continue to play a buffering role during multiple collisions. Working together with the honeycomb aluminum foam composite block 404, it can effectively reduce the damage to the vehicle body and passengers caused by excessive local impact force. The bumper top cover 2 assists in fixing the filling component. The bumper cover 2 is connected to the front of the vehicle, which enhances the overall connection strength between the bumper and the vehicle body, making it less likely for the bumper to separate from the vehicle body when impacted. On the one hand, the bumper bottom shell 3 can prevent scratches on the bottom and protect the bumper from damage from below, such as friction when passing through rough roads or parking; on the other hand, it also assists in fixing the filling assembly, further improving the stability of the entire bumper structure. A headlight mounting groove 402 is provided on the shape memory alloy block 401, which cleverly integrates the headlight mounting function with the filling assembly, making rational use of space and ensuring the stability and safety of the headlight during a collision.

Claims

1. A bumper profile for an automobile, comprising a bumper shell (1); characterized in that: The invention also includes a bumper top cover (2), a bumper bottom shell (3) and a filling component; the bumper shell (1) is internally installed with a filling component for forming a buffer layer to reduce damage to the vehicle body and passengers caused by excessive local impact force; the top of the bumper shell (1) is installed with a bumper top cover (2) for assisting in fixing the filling component and connecting to the front of the vehicle; the bottom of the bumper shell (1) is installed with a bumper bottom shell (3) for preventing bottom scratches and assisting in fixing the filling component; the filling component includes a shape memory alloy block (401), a honeycomb aluminum foam composite block (404), a back plate (405) and a mounting block (407); both sides of the honeycomb aluminum foam composite block (404) are connected and mounted with shape memory alloy blocks (401).

2. The automobile bumper profile according to claim 1, characterized in that: A back plate (405) is installed at the outer end of the honeycomb aluminum foam composite block (404), and two groups of mounting blocks (407) are vertically and symmetrically installed at the outer end of the back plate (405). The mounting blocks (407) are both symmetrically provided with two groups of connection grooves (406).

3. The automobile bumper profile according to claim 2, characterized in that: A headlight mounting groove (402) is provided at the center of the outer end of the shape memory alloy block (401), and a plurality of top cover mounting holes (403) for connecting to the bumper top cover (2) are provided at the top of the shape memory alloy block (401).

4. The automobile bumper profile according to claim 1, characterized in that: Two groups of vehicle light holes (101) are symmetrically provided at the outer end of the bumper shell (1), and a vehicle logo mounting groove (102) is provided at the center of the outer end of the bumper shell (1).

5. The automobile bumper profile according to claim 4, characterized in that: A connecting plug plate (105) is symmetrically mounted on one end of the bumper housing (1) away from the headlight hole (101), and a license plate mounting groove (104) is provided at the outer end of the bumper housing (1) at the bottom end of the vehicle logo mounting groove (102).

6. The automobile bumper profile according to claim 5, characterized in that: Fixing screws (103) are installed at the corners around the license plate installation slot (104), and threaded holes for installing the fixing screws (103) are opened at the corners around the license plate installation slot (104).

7. The automobile bumper profile according to claim 1, characterized in that: Three groups of connecting and fixing plates (201) are linearly installed on the outer end of the bumper top cover (2), and three groups of screw fixing holes (202) are linearly passed through the top of the connecting and fixing plates (201).

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