Automotive bumper

Abstract

The utility model relates to the bumper for vehicle belongs to the technical field of automobile accessories, including strength layer and beautiful layer, its characterized in that, strength layer and beautiful layer are connected through fixed bolt, the one end of beautiful layer towards strength layer is equipped with a plurality of fixed column, is equipped with the fixed part with fixed column on strength layer, is equipped with the fixed cavity for the fixed column intercalation on fixed part, the fixed through -hole for the fixed bolt is set up and is equipped with on fixed part, is equipped with the fixed screw hole with fixed bolt screw thread cooperation on fixed column, still be equipped with a plurality of positioning inlay piece on beautiful layer, is equipped with the positioning inlay groove for the positioning inlay piece intercalation on strength layer through -going. The application has the effect of improving the assembly efficiency of automobile bumper.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts, and in particular to a vehicle bumper. Background Technology

[0002] Car bumpers are passive safety devices installed at the front and rear of vehicles, serving multiple functions including collision buffering, vehicle body protection, pedestrian protection, and aesthetic enhancement. In practice, car owners often replace their original bumpers for aesthetic or safety reasons. To reduce bumper costs while maintaining strength, bumpers are typically divided into a strength layer and an aesthetic layer made of different materials, with the aesthetic layer fixed to the strength layer. However, in practice, it has been found that misalignment relative to the strength layer often occurs during the fixing process of the aesthetic layer, affecting the assembly efficiency of the bumper. Utility Model Content

[0003] To improve the assembly efficiency of car bumpers, this application provides a car bumper.

[0004] This application provides a vehicle bumper, which adopts the following technical solution:

[0005] A vehicle bumper includes a strength layer and an aesthetic layer, which are connected by fixing bolts. The aesthetic layer has multiple fixing posts at one end facing the strength layer. The strength layer has fixing parts corresponding to the fixing posts, and the fixing parts have fixing cavities for the fixing posts to fit into. The fixing parts have through holes for the fixing bolts to pass through. The fixing posts have threaded holes for threaded engagement with the fixing bolts. The aesthetic layer also has multiple positioning inserts, and the strength layer has through grooves for the positioning inserts to be embedded in.

[0006] By adopting the above technical solution, the fixing bolt passes through the fixing through hole and is screwed into the fixing threaded hole, so that the aesthetic layer and the strength layer are fixed, ensuring the strength of the aesthetic layer fixed on the strength layer; the positioning insert and the positioning groove cooperate to provide initial positioning for the position of the aesthetic layer fixed on the strength layer, thereby facilitating the insertion of the fixing post into the fixing cavity, which improves the assembly efficiency of the car bumper to a certain extent.

[0007] Preferably, the strength layer is provided with a positioning part corresponding to the positioning groove, the positioning groove penetrates the positioning part, the thickness of the positioning insert decreases sequentially in the direction away from the aesthetic layer, and the inner wall of the positioning groove is provided with a reinforcing strip that fits with the positioning insert.

[0008] By adopting the above technical solution, the thickness of the positioning insert decreases sequentially in the direction away from the aesthetic layer. On the one hand, this increases the contact area between the positioning insert and the aesthetic layer, thereby ensuring the reliability of the positioning insert fixed on the aesthetic layer. On the other hand, it provides guidance for the sliding of the positioning insert toward the positioning groove. The setting of the reinforcing strip ensures strength, making it less likely for the positioning insert to break in the positioning groove. On the other hand, the reinforcing strip abuts against the positioning insert, making it less likely for the positioning insert to move out of the positioning groove. During initial positioning, this prevents the aesthetic layer from easily separating from the strength layer.

[0009] Preferably, the aesthetic layer is provided with a limiting block, the strength layer is provided with a limiting slot for the limiting block to pass through, the limiting block is provided with a matching slot for the strength layer wall thickness to be embedded, and the strength layer is provided with a limiting spring block for pushing the limiting block to slide to fit against the inner wall of the matching slot.

[0010] By adopting the above technical solution, the cooperation between the limiting block and the limiting spring block further provides initial positioning for fixing the aesthetic layer to the strength layer, which facilitates the subsequent assembly of the fixing bolts and improves the assembly efficiency of the bumper to a certain extent.

[0011] Preferably, the fixing part is provided with a countersunk hole for accommodating the screw head of the fixing bolt.

[0012] By adopting the above technical solution, the design of the fixed countersunk hole provides protection for the screw head, making it less likely to be damaged or rotated under the action of other components, thus ensuring the reliability of the fixation of the aesthetic layer and the strength layer by the fixing bolt.

[0013] Preferably, the end of the positioning insert away from the aesthetic layer is provided with a guide arc surface.

[0014] By adopting the above technical solution, the guide arc surface provides guidance for the sliding of the positioning insert toward the positioning groove, making it easier for the positioning insert to slide into the positioning groove.

[0015] Preferably, the strength layer is made of ABS material.

[0016] By adopting the above technical solutions, the strength, appearance, and impact resistance of the manufactured car bumpers are effectively improved, making the bumpers less prone to damage and extending their service life.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. The positioning insert and positioning groove cooperate to provide initial positioning for the position of the aesthetic layer fixed on the strength layer, thereby facilitating the embedding of the fixing post into the fixing cavity and improving the assembly efficiency of the car bumper to a certain extent.

[0019] 2. The cooperation between the limiting block and the limiting spring block provides initial positioning for fixing the aesthetic layer onto the strength layer, which facilitates the subsequent assembly of the fixing bolts and improves the assembly efficiency of the bumper to a certain extent. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a car bumper.

[0021] Figure 2 This is a schematic diagram of the internal structure of a car bumper.

[0022] Figure 3 yes Figure 2 Enlarged view of part A in the image.

[0023] Figure 4 yes Figure 2 A schematic diagram of the structure after the reinforcement layer is removed.

[0024] Explanation of reference numerals in the attached drawings: 1. Strength layer; 11. Fixing part; 111. Fixing through hole; 112. Fixing countersunk hole; 12. Positioning groove; 121. Positioning part; 122. Reinforcing strip; 2. Aesthetic layer; 21. Fixing post; 211. Fixing threaded hole; 22. Positioning insert; 221. Guide arc surface; 23. Limiting block; 231. Limiting groove; 232. Limiting spring block; 233. Mating groove; 24. Heat dissipation hole. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0026] This application discloses a vehicle bumper. Vehicle bumpers are generally divided into front bumpers and rear bumpers. Some structures in this application are applicable to both front and rear bumpers. (Refer to...) Figure 1 , Figure 2 and Figure 3 The system includes a strength layer 1 and an aesthetic layer 2, which are fixed together by fixing bolts. Multiple fixing posts 21 are fixed to one end of the aesthetic layer 2 facing the strength layer 1. The strength layer 1 has fixing parts 11 corresponding to the fixing posts 21. Each fixing part 11 has a fixing cavity for the fixing posts 21 to fit into. A fixing through hole 111 for the fixing bolts to pass through is also provided in the fixing part 11. Each fixing post 21 has a fixing threaded hole 211 that engages with the fixing bolts. The fixing bolts pass through the fixing through hole 111 and are screwed into the fixing threaded hole 211, thus fixing the aesthetic layer 2 to the strength layer 1 and ensuring the strength of the aesthetic layer 2 fixed to the strength layer 1.

[0027] Reference Figure 3The fixing part 11 is provided with a fixing countersunk hole 112 for accommodating the screw head of the fixing bolt. The design of the fixing countersunk hole 112 provides protection for the screw head, making it less likely to be damaged or rotated under the action of other components, thus ensuring the reliability of the fixing of the aesthetic layer 2 and the strength layer 1 by the fixing bolt.

[0028] The first strength layer is made of ABS material, which stands for Acrylonitrile-Butadiene-Styrene copolymer. It is the most widely produced and used polymer. It organically combines the various properties of PS, SAN, and BS, exhibiting excellent mechanical properties with a balance of toughness, hardness, and rigidity. Traditional car bumpers are typically made of PP material. Compared to PP, ABS material offers higher strength, a better appearance, and superior impact resistance, making the bumper less prone to damage and extending its lifespan.

[0029] Reference Figure 3 and Figure 4 The aesthetic layer 2 is also fixed with a number of positioning inserts 22. The number of positioning inserts 22 depends on the size of the aesthetic layer 2 itself. The strength layer 1 is provided with a positioning groove 12 for the positioning inserts 22 to be inserted. The positioning inserts 22 cooperate with the positioning groove 12 to provide initial positioning for the position of the aesthetic layer 2 fixed on the strength layer 1, thereby facilitating the insertion of the fixing post 21 into the fixing cavity and improving the assembly efficiency of the car bumper to a certain extent.

[0030] Reference Figure 3 and Figure 4 The strength layer 1 is provided with a positioning part 121 corresponding to the positioning groove 12. The positioning groove 12 passes through the positioning part 121. The thickness of the positioning insert 22 decreases sequentially in the direction away from the aesthetic layer 2. On the one hand, it increases the contact area between the positioning insert 22 and the aesthetic layer 2, thereby ensuring the reliability of the positioning insert 22 fixed on the aesthetic layer 2. On the other hand, it provides guidance for the sliding of the positioning insert 22 toward the positioning groove 12. The inner wall of the positioning groove 12 is provided with a reinforcing strip 122 that fits with the positioning insert 22. The setting of the reinforcing strip 122 ensures the strength, making it difficult for the positioning insert 22 to break in the positioning groove 12. On the other hand, the reinforcing strip 122 abuts against the positioning insert 22, making it difficult for the positioning insert 22 to move out of the positioning groove 12. During initial positioning, it makes it difficult for the aesthetic layer 2 to detach from the strength layer 1.

[0031] Reference Figure 3 The positioning insert 22 has a guide arc surface 221 at the end away from the aesthetic layer 2. The guide arc surface 221 is provided to guide the sliding of the positioning insert 22 toward the positioning groove 12, so that the positioning insert 22 can slide into the positioning groove 12.

[0032] Reference Figure 3 A limiting block 23 is fixedly provided on the aesthetic layer 2. A limiting groove 231 for the limiting block 23 to pass through is provided on the strength layer 1. The limiting block 23 is provided with a matching groove 233 for the wall thickness of the strength layer 1 to be embedded. The strength layer 1 is provided with a limiting spring block 232 for pushing the limiting block 23 to slide into the matching groove 233 and fit against the inner wall of the limiting groove 231. During the installation of the aesthetic layer 2, the limiting block 23 can push the limiting spring block 232 as it slides into the limiting groove. The oscillation of block 232 provides clearance for the sliding of the limiting block 23. When the limiting block 23 slides until the inner wall of the mating groove 233 completely covers the inner wall of the limiting groove 231, the limiting block 23 can make the inner wall of the mating groove 233 fit with the inner wall of the limiting groove 231 under the elastic action of the limiting spring block 232. This makes it difficult for the limiting block 23 to move away from the limiting groove 231 without the action of other external forces, further improving the reliability of the aesthetic layer 2 fixed on the strength layer 1.

[0033] Reference Figure 1 and Figure 2 In the front bumper of the vehicle, multiple heat dissipation holes 24 are provided through the aesthetic layer 2. The heat dissipation holes 24 are mainly used for ventilation and heat dissipation of the vehicle's engine compartment to ensure that the engine and other key components maintain a suitable operating temperature.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vehicle bumper, comprising a strength layer (1) and an aesthetic layer (2), characterized in that, The strength layer (1) and the aesthetic layer (2) are connected by fixing bolts. The aesthetic layer (2) has multiple fixing posts (21) at one end facing the strength layer (1). The strength layer (1) has fixing parts (11) corresponding to the fixing posts (21). The fixing parts (11) have fixing cavities for the fixing posts (21) to fit into. The fixing parts (11) have through holes (111) for the fixing bolts to pass through. The fixing posts (21) have threaded holes (211) that are threaded with the fixing bolts. The aesthetic layer (2) also has multiple positioning inserts (22). The strength layer (1) has through slots (12) for the positioning inserts (22) to be embedded.

2. The vehicle bumper according to claim 1, characterized in that, The strength layer (1) is provided with a positioning part (121) corresponding to the positioning groove (12), the positioning groove (12) penetrates the positioning part (121), the thickness of the positioning insert (22) decreases sequentially in the direction away from the aesthetic layer (2), and the inner wall of the positioning groove (12) is provided with a reinforcing strip (122) that fits with the positioning insert (22).

3. The vehicle bumper according to claim 2, characterized in that, The aesthetic layer (2) is provided with a limiting block (23), and the strength layer (1) is provided with a limiting slot (231) for the limiting block (23) to pass through. The limiting block (23) is provided with a matching slot (233) for the wall thickness of the strength layer (1) to be embedded. The strength layer (1) is provided with a limiting spring block (232) for pushing the limiting block (23) to slide to fit the inner wall of the matching slot (233) and the inner wall of the limiting slot (231).

4. The vehicle bumper according to claim 1, characterized in that, The fixing part (11) is provided with a fixing countersunk hole (112) for accommodating the screw head of the fixing bolt.

5. The vehicle bumper according to claim 1, characterized in that, The positioning insert (22) has a guide arc surface (221) at the end away from the aesthetic layer (2).

6. The vehicle bumper according to claim 1, characterized in that, The strength layer (1) is made of ABS material.

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