CN210912320U - Bumper component - Google Patents

Abstract

The utility model relates to a bumper subassembly, including support piece, bumper anticollision roof beam support and bumper covering, support piece is fixed on bumper anticollision roof beam support by the installation, and the bumper covering is fixed on support piece by the installation, and support piece comprises major structure and the muscle structure that is located major structure's front end, and major structure is cellular major structure, and the muscle structure is X type energy-absorbing muscle structure. According to the utility model, the bumper component supports the bumper skin through the honeycomb main body structure, absorbs energy through the X-shaped energy absorption rib structure, and simultaneously keeps light weight and good visual effect; by utilizing the stability of the polygonal structure of the honeycomb main body structure of the supporting piece, stress conduction energy can be effectively dispersed, so that parts can not be easily deformed and buffer impact is generated; the X-shaped energy-absorbing rib structure utilizing the supporting piece can meet the collision requirements of different angles, so that the pedestrian is protected, and the bumper can be effectively supported to prevent the skin from sinking.

Description

Bumper component

Technical Field

The present invention relates to automobiles, and more particularly to a bumper assembly.

Background

Automobiles, one of the most common transportation vehicles, have become increasingly popular in everyday life. With the rapid development of technology, the demands of consumers on the appearance and safety performance of automobiles gradually rise. The impact of the automobile bumper on the appearance of the automobile is very important. Therefore, in order to meet the increasing appearance demands of consumers, automobile developers make a big paper on bumpers, and are dedicated to developing new products with novel appearance and integrated with multiple functions. At the same time, the weight of the bumper is also greatly increased. Therefore, how to make the plastic bumper satisfy the function and keep the light weight and good visual effect is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the bumper assembly among the prior art can't compromise lightweight and good outward appearance, the utility model provides a bumper subassembly.

According to the utility model discloses a bumper subassembly includes support piece, bumper anticollision roof beam support and bumper covering, and wherein, support piece is fixed on bumper anticollision roof beam support by the installation, and the bumper covering is fixed on support piece by the installation, and wherein, support piece comprises major structure and the muscle structure that is located major structure's front end, and this major structure is cellular major structure, and this muscle structure is X type energy-absorbing muscle structure.

Preferably, the main body structure is a hexagonal honeycomb structure.

Preferably, the wall thickness of the hexagonal honeycomb structure is between 1.5mm and 3mm, and the side length of the hexagonal honeycomb structure is between 10mm and 20 mm.

Preferably, the cross-sectional width of the main body structure in the vehicle body direction is between 40mm and 80 mm.

Preferably, the rib structure is an X-shaped energy absorption rib structure formed by crossing and compounding two S-shaped ribs in different directions.

Preferably, the rib structure comprises a first rib structure and a second rib structure, an included angle between a connecting line of two end points of the S-shaped rib and the vertical collision surface is called a rib angle, and the rib angle of the first rib structure is different from that of the second rib structure.

Preferably, the wall thickness of the S-shaped ribs is between 1.5mm and 2.5mm, and the spacing between adjacent S-shaped ribs is between 20mm and 30 mm.

Preferably the longitudinal depth of the S-shaped ribs from root to tip is between 45-70 mm.

Preferably, the support member is connected to the bumper impact beam bracket by fasteners and/or snaps.

Preferably, the support and the bumper skin are connected by means of fasteners and/or snap-fits.

According to the utility model discloses a bumper subassembly supports the bumper skin through cellular major structure, absorbs the energy through X type energy-absorbing muscle structure, keeps lightweight and good visual effect simultaneously. According to the utility model discloses a bumper subassembly utilizes the polygonal structure stability of the cellular major structure of support piece, under the condition of equal atress, can effectual dispersion stress conduction energy, and part just can be difficult to deform like this, produces the cushioning effect to the impact; the X-shaped energy-absorbing rib structure utilizing the supporting piece can meet the collision requirements of different angles, so that the pedestrian is protected, and the bumper can be effectively supported to prevent the skin from sinking.

Drawings

FIG. 1 is an exploded view of a bumper assembly according to a preferred embodiment of the present invention;

FIG. 2 shows the support of FIG. 1;

FIG. 3 shows the body structure of FIG. 2;

FIG. 4 shows the first web structure of FIG. 2;

FIG. 5 shows the second web structure of FIG. 2;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 7 is a sectional view taken along line B-B of fig. 1.

Detailed Description

The following description of the preferred embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1, a bumper assembly according to a preferred embodiment of the present invention includes a support member 1, a bumper beam support 2, and a bumper skin 3, wherein the support member 1 is fixedly mounted on the bumper beam support 2, and the bumper skin 3 is fixedly mounted on the support member 1. Thus, the support 1 for supporting the bumper skin 3 can prevent the sinking of the bumper skin 3.

As shown in fig. 2, the support member 1 is composed of a main body structure 11 and a rib structure 12, wherein the rib structure 12 is located at the front end of the main body structure 11. Specifically, the main body structure 11 is a honeycomb main body structure, and the rib structure 12 is an X-shaped energy absorbing rib structure. The support 1 thus absorbs energy by means of the honeycomb structure and the X-shaped energy-absorbing ribs.

In the present embodiment, the main structure 11 is a hexagonal honeycomb structure, as shown in fig. 3, so that the stress dispersion is not easy to deform, is not easy to fatigue fracture, and has a strong buffering capacity, thereby being capable of better transmitting and dispersing energy. Specifically, the hexagonal honeycomb structure comprises a plurality of nodes, and the effective coverage area of each node is a regular hexagon with equal size. Particularly, under the condition that the areas of the bracket main body shells are the same, the perimeter of the hexagon is shorter than that of the quadrangle, so that the material required for forming the hexagonal connecting ribs is relatively less than that required for forming the quadrangle connecting ribs, and the injection molded product achieves the purposes of reducing the material cost, reducing the deformation and increasing the buffer capacity. In a honeycomb structure, each node's derivative line has 3 neighbors, the circumference of its sensing area is completely covered by exactly these 3 neighbors, and the angle covered by each neighbor is 120 degrees. In a preferred embodiment, the wall thickness of the honeycomb structure is between 1.5mm and 3mm and the sides of the hexagons are between 10mm and 20 mm. In addition, in the preferred embodiment, the cross-sectional width L1 (see FIG. 2) of the body structure 11 in the vehicle body direction is between 40mm and 80 mm. It should be understood that the main body structure 11 may also be a derivative of a polygon such as a quadrangle, a pentagon, etc.

In this embodiment, the rib structure 12 is an X-shaped energy absorbing rib structure, which is formed by crossing and compounding two S-shaped ribs (i.e., a first rib 12a, 12a 'and a second rib 12b, 12 b') in different directions, as shown in fig. 4 and 5. Specifically, since the bumper skin 3 has a certain arc shape, the energy-absorbing ribs are also designed to be in a curved surface state with a certain radian, so that the energy-absorbing ribs are perpendicular to the tangential direction of the collided curved surface when collision occurs, and the best energy-absorbing effect is achieved. In the collision process, the impact force caused by the cambered surface is not fixed, but in the collision process, the bracket (namely the support piece 1 and the bumper anti-collision beam bracket 2 assembly) is expected to have certain telescopic elasticity so as to absorb the capacity generated by the collision, so that the energy absorption rib is designed into an S shape. Due to the specific radian of the appearance of the bumper skin 3, the directions of the forces generated by collision at different positions are different, in order to better absorb energy, the shape of the S-shaped rib is not fixed, and different collision requirements can be met by setting parameters of different S-shaped ribs. Specifically, because the direction of the impact force generated in the collision is different, the S-shaped ribs in two different directions are crossed and compounded at the same point, so that the S-shaped ribs can be ensured to absorb and relieve the impact force to the maximum extent no matter which direction the collision occurs, the energy can be better absorbed, the requirement of low-speed collision is met, and the requirement of pedestrian protection can also be met. Thus, the X-shaped energy-absorbing rib structure formed by the crossed and compounded S-shaped ribs in two different directions enables the rib structure 12 to bear the impact of larger force and meet the collision requirements of different angles and the like. In addition, in order to better meet the requirements of head-on collision, corner collision and pedestrian protection, the rib structures 12 are designed in a sectional manner according to the different directions of the forces borne by the S-shaped ribs in different areas, and comprise first rib structures 121 and second rib structures 122, as shown in fig. 2. Specifically, an angle between a line connecting two points of the S-shaped bead and the vertical collision surface is referred to as a bead angle G, and as shown in fig. 4 and 5, the bead angle G1 of the first bead structure 121 is different from the bead angle G2 of the second bead structure 122. Further, the rib structure 12 thus designed has a certain elasticity after the collision is completed, and can be returned to the initial state. In a preferred embodiment, the wall thickness of the S-shaped ribs is between 1.5mm and 2.5mm, the spacing L2 (see fig. 4) between adjacent S-shaped ribs is between 20mm and 30mm, and the longitudinal depth L3 (see fig. 5) of the root to tip of the S-shaped ribs in cross section in the X direction is between 45 mm and 70 mm.

In the present embodiment, the support member 1 is connected to the bumper impact beam bracket 2 by a fastener. As shown in fig. 6, support member 1 is fixed on bumper anti-collision beam support 2 through bolt 4, and then provides effective support for support member 1 in the Z direction through bumper anti-collision beam support 2, thereby avoids support member 1 self to sink and overturn, reduces the sunken risk of whole bumper subassembly. It should be understood that the support 1 may also be mounted to the bumper impact beam bracket 2 by a structure such as a snap fit.

In the present embodiment, the support 1 is connected to the bumper skin 3 by fasteners. As shown in fig. 7, the strut member 1 has a tubular column (i.e., a BOSS column of tubular structure) 13, the bumper skin 3 has a hole 31, and a bolt 5 is inserted into the tubular column 13 through the hole 31 to achieve fixation of the bumper skin 3 to the strut member 1. Preferably, the hole 31 is a flanged hole to achieve a positioning and fastening effect. It should be understood that the bumper skin 3 may also be mounted to the support 1 by means of structures such as snaps.

In a word, according to the utility model discloses a bumper subassembly utilizes support piece 1's major structure 11's polygonal structure stability, under the condition that receives the force equally, can effectual dispersion stress conduction energy, and the part just can non-deformable like this, produces the cushioning effect to the impact. Specifically, the honeycomb main body structure 11 of the supporting member 1 has higher strength and rigidity than sandwich structures in other forms, and the overall part structure is combined with mechanical experiments to prove that the polygonal honeycomb structure is easier to disperse stress compared with the traditional box-shaped structure, and energy can be transmitted around through the connected ribs under the impact of external force, so that the energy can be effectively absorbed. Additionally, the utility model discloses a bumper subassembly utilizes the sectional type X muscle structure of support piece 1's muscle structure 12 can satisfy the collision requirement of different angles, has both protected the pedestrian, also can effectually support the bumper and prevent sinking of covering. In particular, the wall thickness of the support 1 of the bumper assembly according to the invention is thin, generally only between 2.0-2.5mm, and less than the 2.5-3.0mm common in the prior art. Additionally, according to the utility model discloses an installation and the dismantlement of support piece 1 of bumper subassembly on bumper anticollision roof beam support 2 are all extremely simple and convenient, can provide effective support to the bumper assembly moreover, reduce the sunken risk of bumper.

What has been described above is only the preferred embodiment of the present invention, not for limiting the scope of the present invention, but various changes can be made to the above-mentioned embodiment of the present invention. All the simple and equivalent changes and modifications made according to the claims and the content of the specification of the present invention fall within the scope of the claims of the present invention. The present invention is not described in detail in the conventional technical content.

Claims (10)

1. The utility model provides a bumper subassembly, its characterized in that, it includes support piece, bumper anticollision roof beam support and bumper skin, and wherein, support piece is fixed by the installation on bumper anticollision roof beam support, and the bumper skin is fixed by the installation on support piece, and wherein, support piece comprises major structure and the muscle structure that is located major structure's front end, and this major structure is cellular major structure, and this muscle structure is X type energy-absorbing muscle structure.

2. The bumper assembly defined in claim 1, wherein the body structure is a hexagonal honeycomb structure.

3. The bumper assembly defined in claim 2, wherein the hexagonal cell structures have a wall thickness of between 1.5mm and 3mm and a side length of between 10mm and 20 mm.

4. The bumper assembly defined in claim 2, wherein the body structure has a cross-sectional width in the direction of the vehicle body of between 40mm and 80 mm.

5. The bumper assembly defined in claim 1, wherein the web structure is an X-shaped energy absorbing web structure formed by cross-compounding two differently oriented S-shaped webs.

6. The bumper assembly defined in claim 5, wherein the web structure includes a first web structure and a second web structure, the line connecting the ends of the S-shaped web and the vertical impact surface defining a web angle, the web angle of the first web structure being different from the web angle of the second web structure.

7. The bumper assembly defined in claim 5, wherein the S-shaped ribs have a wall thickness of between 1.5mm and 2.5mm and the spacing between adjacent S-shaped ribs is between 20mm and 30 mm.

8. The bumper assembly defined in claim 5, wherein the longitudinal depth of the S-shaped bead from root to tip is between 45-70 mm.

9. The bumper assembly of claim 1, wherein the support member is connected to the bumper impact beam bracket by fasteners and/or snaps.

10. The bumper assembly defined in claim 1, wherein the support member is connected to the bumper skin by fasteners and/or snaps.

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