Bumper bracket, front end assembly, and vehicle

Abstract

Bumper bracket (2). The bumper bracket is provided with a mounting hole (22) and a weakened portion (21). The mounting hole is used to realize a connection between the bumper bracket and a vehicle body module (3). In the vehicle longitudinal direction, the weakened portion is disposed forward of the mounting hole, a protrusion of the mounting hole in the vehicle longitudinal direction and a protrusion of the weakened portion in the vehicle longitudinal direction at least partially overlap, and the structural strength of the weakened portion is lower than the structural strength of the bumper bracket.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure is based on and claims priority to Chinese Patent Application No. 202221030836.2, "BUMPER BRACKET, VEHICLE BODY FRONT END ASSEMBLY, AND VEHICLE," filed on April 29, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the technical field of bumper brackets, and more particularly to bumper brackets, vehicle front end assemblies, and vehicles. [Background technology]

[0003] With the rapid increase in the number of vehicles, vehicle safety is also becoming an increasing concern. When a head-on collision occurs between a pedestrian and a vehicle, it is usually the vehicle's front bumper that comes into direct contact with the pedestrian's body. However, existing vehicle bumpers are generally attached to the vehicle body via sheet metal brackets and non-retractable plastic brackets. The deformation of sheet metal brackets and non-retractable plastic brackets is limited, and they cannot effectively collapse to absorb energy and provide a buffering effect.

[0004] In the prior art, the shock-absorbing deformation capacity of the bumper is improved by adding an elastic buffer part, an airbag, etc. Although this method can realize the crushing of the bumper, it requires a large number of parts, and at the same time, the recovery deformation of the elastic part after the elastic deformation increases the secondary damage to the pedestrian impact. Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure aims to solve at least to some extent one of the technical problems in the above technology. [Means for solving the problem]

[0006] To this end, a first aspect of the present disclosure provides a bumper bracket configured to be connected to a vehicle body, the bumper bracket having a mounting hole and a weakened portion, the mounting hole configured to connect the bumper bracket to the vehicle body, the weakened portion being disposed forward of the mounting hole in the vehicle's fore-and-aft direction, a protruding portion of the mounting hole in the vehicle's fore-and-aft direction at least partially overlapping a protruding portion of the weakened portion in the vehicle's fore-and-aft direction, and the structural strength of the weakened portion being lower than the structural strength of the bumper bracket.

[0007] In one embodiment, a connecting portion is provided between the mounting hole and the weakened portion, the connecting portion configured to space the mounting hole from the weakened portion, and the width of the connecting portion is inversely proportional to the crumple capability of the bumper bracket.

[0008] In one embodiment, the weakened portion is strip-shaped, and the angle between the extension direction of the weakened portion and the longitudinal direction of the vehicle is inversely proportional to the crumple capacity of the bumper bracket.

[0009] In one embodiment, the thickness of the weakened portion is less than the thickness of the connecting portion.

[0010] In one embodiment, the weakened portion has a thickness of zero and the shape of the weakened portion is one of a rectangle, a trapezoid, an oval, a rhomboid, a triangle, a hexagon, or a triangle.

[0011] In one embodiment, the sidewalls of the weakened portion are flat or curved.

[0012] In one embodiment, the weakened portion is integrally formed with the bumper bracket.

[0013] In one embodiment, a plurality of adjacent weakened portions are provided in front of the mounting hole.

[0014] A second aspect of the present disclosure provides a vehicle body front end assembly including a bumper, a vehicle body, a fastener, and the above-described bumper bracket, wherein the bumper is fixedly coupled to a front end of the bumper bracket, the fastener passes through a mounting hole to couple the bumper bracket to the vehicle body, and the fastener is configured to move from the mounting hole to the weakened portion when an external force applied to the bumper bracket is greater than a predetermined value.

[0015] According to a third aspect of the present disclosure, there is provided a vehicle including the above-described vehicle body front end assembly or the above-described bumper bracket.

[0016] Compared with the prior art, the present disclosure has the following beneficial technical effects:

[0017] According to the present disclosure, a weakened portion is provided on a bumper bracket, and when a vehicle collides with a pedestrian, the bumper bracket receives a force toward the rear of the vehicle, causing the fastener to move from the mounting hole to the weakened portion. Due to the weak strength of the weakened portion, the weakened portion is more susceptible to plastic deformation, and the entire front bumper may move toward the rear of the vehicle, thereby preventing secondary damage to the pedestrian caused by deformation recovery after deformation, thereby reducing damage to the pedestrian and improving the cushioning deformation capacity of the vehicle bumper system. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic structural diagram showing a bumper bracket according to one embodiment of the present disclosure. [Figure 2] FIG. 2 is an enlarged view of the bumper bracket at B shown in FIG. 1. [Figure 3] 2 is a schematic cross-sectional view of the bumper bracket shown in FIG. 1 taken along line AA. [Figure 4] 1 is a schematic structural diagram of a bumper bracket mounting structure according to one embodiment of the present disclosure. [Figure 5] 1 is a schematic structural diagram of a vehicle body front end assembly according to one embodiment of the present disclosure. [Figure 6]1 is a schematic diagram of a vehicle according to one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0019]

[0023] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, and in all of the accompanying drawings, the same or similar reference numerals indicate the same or similar components, or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0020] 1 to 5 , in one embodiment of the present disclosure, a bumper bracket 2 is provided, and the bumper bracket 2 is provided with a mounting hole 22 and a weakened portion 21. The mounting hole 22 is configured to connect the bumper bracket 2 to a vehicle body 3. The weakened portion 21 is provided in front of the mounting hole 22 in the longitudinal direction of the vehicle, and the protruding portion of the mounting hole 22 in the longitudinal direction of the vehicle and the protruding portion of the weakened portion 21 in the longitudinal direction of the vehicle at least partially overlap with each other, and the structural strength of the weakened portion 21 is lower than the structural strength of the bumper bracket 2.

[0021] The bumper bracket 2 in the above embodiment is mainly used to install the bumper 1 of the vehicle 100 on the vehicle body. The bumper bracket 2 includes a front end and a rear end. The front end of the bumper bracket 2 refers to the end of the bumper bracket 2 that faces the front of the vehicle in normal use, and the rear end of the bumper bracket 2 refers to the end of the bumper bracket 2 that faces the rear of the vehicle in normal use. The end of the bumper bracket 2 that faces the front of the vehicle is connected to the bumper 1, and the end that faces the rear of the vehicle is connected to the vehicle body 3.

[0022] In the above embodiment, the vehicle body 3 refers to several components disposed within the vehicle 100, which may include, but are not limited to, one or more of a radiator, a condenser, an intercooler, a lamp assembly, an air guide system, etc.

[0023] In the above embodiment, the fore-and-aft direction of the vehicle refers to the longitudinal direction of the vehicle body in Figure 1, etc., and the front direction of the vehicle refers to the rear direction of the vehicle, or the rear direction of the vehicle refers to the front direction of the vehicle, and the direction toward the front end is defined as forward, and the direction toward the rear end is defined as rear.

[0024] 1, in one embodiment of the present disclosure, the weakened portions 21 correspond to pairs of mounting holes 22. Two mounting holes 22 for connecting to the vehicle body 3 are provided at the rear end of the bumper bracket 2, and one weakened portion 21 is provided in front of each mounting hole 22.

[0025] In actual use, as shown in Figure 4, the front end of the bumper bracket 2 is fixedly connected to the bumper 1 via a plurality of screws. At least one mounting hole 22 is provided at the rear end of the bumper bracket 2, and a fastener 4 such as a bolt passes through the mounting hole 22 and is fixed to a corresponding position on the lower front part of the vehicle body 3 so as to connect the bumper bracket 2 to the vehicle body 3.

[0026] The protruding portion of mounting hole 22 in the front-rear direction of the vehicle at least partially overlaps with the protruding portion of weakened portion 21 in the front-rear direction of the vehicle. Specifically, the protruding portion of mounting hole 22 in the front-rear direction of bumper bracket 2 is a first protruding portion (not shown), and the protruding portion of weakened portion 21 in the front-rear direction of bumper bracket 2 is a second protruding portion (not shown), and the first protruding portion and the second protruding portion completely overlap, or at least a portion of the first protruding portion and the second protruding portion overlap.

[0027] The structural strength of the weakened portion 21 is lower than the structural strength of the bumper bracket 2. Specifically, to achieve a situation in which the strength of the weakened portion 21 is lower than the strength of the bumper bracket 2, in one embodiment of the present disclosure, the weakened portion 21 may be provided in the form of a hollow weakened groove, or the thickness of the material in the area of ​​the weakened portion 21 may be reduced, or a material with relatively weak structural strength may be used in the weakened portion 21, and naturally, other general arrangement methods not limited in this specification may also be used as long as the structural strength of the area of ​​the weakened portion 21 on the bumper bracket 2 is relatively low and easy to deform.

[0028] In the above embodiment, the weakened portion 21 improves the shock-absorbing deformation capability of the bumper 1 system of the vehicle 100. The specific principle is as follows: in normal use, the vehicle body 3 is attached to the mounting hole 22 at the rear end of the bracket using fasteners 4 such as bolts, and the vehicle body 3 is fixed on the vehicle frame. When the vehicle 100 collides with a pedestrian, the bumper bracket 2 receives an acting force toward the rear of the vehicle, which is transmitted to the vehicle body 3 via the fasteners 4. Because the vehicle body 3 is fixedly connected to the vehicle frame, the vehicle body 3 transmits a reaction force to the bumper bracket 2 via the fasteners 4 (the reaction force is from the rear of the vehicle to the front of the vehicle). Because the structural strength of the weakened portion 21 is lower than the normal structural strength of the bumper bracket 2, the weakened portion 21 is more susceptible to plastic deformation than other areas of the bumper bracket 2 to achieve an energy absorption effect. The mounting holes 22 of the bumper bracket 2 in the longitudinal direction of the vehicle and the protruding portions of the weakened portions 21 overlap with each other, so that after a collision occurs, the fasteners 4 move from the mounting holes 22 to the weakened portions 21, and the bumper bracket 2 moves toward the rear of the vehicle so as to move the entire front bumper 1 further toward the rear of the vehicle, thereby preventing secondary injury to pedestrians caused by the weakened portions 21 recovering from deformation after they have been deformed.

[0029] As shown in Figures 2 and 3, in one embodiment of the present disclosure, a connecting portion 23 is provided between the mounting hole 22 and the weakened portion 21, the connecting portion 23 is configured to space the mounting hole 22 from the weakened portion 21, and the width of the connecting portion 23 is inversely proportional to the crush capacity of the bumper bracket 2.

[0030] In the above embodiment, for convenience of explanation, the rib between the weakened portion 21 and the mounting hole 22 is called the connecting portion 23, and the width of the connecting portion 23 affects the degree of crushing that occurs upon impact.

[0031] Crush capacity refers to how easily the bumper bracket can be crushed. Specifically, if the bumper bracket is easy to crush, it is called a large crush capacity, and if the bumper bracket is difficult to crush, it is called a small crush capacity.

[0032] When the width of the connecting portion 23 is relatively large, i.e., when the distance between the weakened portion 21 and the bolt mounting hole 22 is relatively large, the connecting rib between the weakened portion 21 and the bolt mounting hole 22 is relatively wide, and the connecting portion 23 can only be separated when a relatively large impact force occurs. That is, the bumper bracket 2 can only be crushed when the bumper 1 receives a relatively large impact, and the bumper is less likely to be crushed, and therefore the crushing capacity is small. Conversely, when the width of the connecting portion 23 is relatively small, i.e., when the distance between the weakened portion 21 and the bolt mounting hole 22 is relatively short, the connecting rib between the weakened portion 21 and the bolt mounting hole 22 is relatively narrow, and the connecting portion 23 can only be separated by a relatively small impact force. That is, the bumper bracket 2 can be crushed when the bumper 1 receives a relatively small impact, and the bumper is more likely to be crushed, and therefore the crushing capacity is large.

[0033] In practical use, the width of the connecting portion 23 may be set according to the requirement on the crushing ability, and the length of the weakened portion 21 is made as long as possible to allow a larger degree of crushing deformation if there is enough space.

[0034] In addition, when the width of the weakened portion 21 is larger than the diameter of the fastener 4, after the fastener 4 breaks the connection portion 23 between the mounting hole 22 and the weakened portion 21, the fastener 4 can smoothly enter the weakened portion 21 with only a small impact force, and therefore, crushing can occur easily, and it can be understood that the crushing capacity is large. When the width of the weakened portion 21 is smaller than the diameter of the fastener 4, after the fastener 4 breaks the connection portion 23 between the mounting hole 22 and the weakened portion 21, a large impact force is required for the fastener 4 to deform the weakened portion 21 and cause crushing, and the crushing capacity is small. Therefore, the specific width of the weakened portion 21 may be adjusted according to the requirement of crushing capacity.

[0035] In addition, it can be understood that the thickness of the material at the edge of the weakened portion 21 may also affect the degree of crushing. If the material thickness of the product is relatively thin, crushing may occur after a relatively small impact force is applied. If the material thickness of the product is relatively thick, a relatively large impact force is required to cause crushing. The specific material thickness of the product may be adjusted according to requirements.

[0036] As shown in Figures 2 and 3, in one embodiment of the present disclosure, the weakened portion 21 is strip-shaped, and the angle between the extension direction of the weakened portion 21 and the longitudinal direction of the vehicle is inversely proportional to the crushing capacity of the bumper bracket.

[0037] In the above embodiment, the weakened portion 21 is provided in a strip shape. When the weakened portion 21 forms an angle with the longitudinal direction of the vehicle, a component force is required to break the connection portion 23 between the weakened portion 21 and the mounting hole 22 due to the force generated after the impact. As a result, collapse can only occur after a large impact force has occurred. Therefore, during actual use, the extension direction of the weakened portion 21 can be adjusted according to requirements. When it is necessary for the bumper bracket 2 to have a relatively large collapse capacity, the included angle between the weakened portion 21 and the first direction can be reduced. When it is necessary for the bumper bracket 2 to have a relatively small collapse capacity, the included angle between the weakened portion 21 and the first direction can be increased.

[0038] As shown in FIG. 1, in one embodiment of the present disclosure, the extending direction of the weakened portion 21 is parallel to the front-rear direction of the vehicle.

[0039] In one embodiment of the present disclosure, the thickness of the weakened portion 21 is less than the thickness of the connecting portion 23 .

[0040] The above embodiment provides a specific way of providing the weakened portion 21. Specifically, the thickness of the weakened portion 21 may be set to zero, that is, the weakened portion 21 may be provided as a weakened groove. Of course, it is also possible to reduce the thickness of the material of the weakened portion 21, ultimately achieving the effect that the structural strength of the weakened portion 21 is lower than the structural strength of other regions of the bumper bracket 2.

[0041] Regarding the shape of the weakened portion 21, in actual use, the weakened portion 21 may be set to a conventional shape such as an oval, diamond, trapezoid, triangular, or hexagonal structure, or may be set to any other non-conventional shape.

[0042] In one embodiment of the present disclosure, the weakened portion 21 is configured as a weakened groove, and the weakened groove is rectangular or trapezoidal.

[0043] In one embodiment of the present disclosure, the sidewalls of the weakened portion 21 are flat or curved.

[0044] The above embodiment provides a specific shape for the weakened portion 21. That is, the weakened portion 21 is configured as a weakened groove, which is a rectangular or trapezoidal hole integrally including a front groove wall 211, a rear groove wall 212, a left groove wall 213, and a right groove wall 214. The four groove walls jointly define the weakened groove. The four groove walls of the weakened groove may be configured as flat or curved surfaces, and the left groove wall 213 and the right groove wall 214 may be arranged as staggered curved surfaces as needed. The connecting portions of the four groove walls may be rounded according to requirements. As long as the strength requirements of the mounting bracket of the bumper 1 are met, the width, length, and thickness of the weakened groove may be flexibly adjusted according to the shape of the bumper 1, the requirements for force failure, etc., to adjust the degree of crushing and deformation.

[0045] The weakened portions 21 may be formed in a number of ways, for example, the weakened portions 21 may be formed by removing material or may be formed in other conventional ways.

[0046] In one embodiment of the present disclosure, the weakened portion 21 and the bracket 2 are formed by integral injection molding, which reduces the number of parts and eliminates the need for additional buffer components, resulting in a bumper 1 assembly with a simple structure, reduced assembly time, and relatively low cost.

[0047] 4, in one embodiment of the present disclosure, a plurality of adjacent weakened portions 21 are provided in front of the mounting hole 22, and the plurality of adjacent weakened portions 21 are arranged along the longitudinal direction of the vehicle. The center lines of the weakened portions 21 and the center lines of the mounting holes 22 are arranged in the same direction, and the arrangement positions of the weakened portions 21 can be flexibly set, and the weakened portions 21 may be arranged in locations where breakage is expected in the event of a collision.

[0048] The connecting portions 23 may be provided between multiple adjacent weakened portions 21, so that when the vehicle 100 is subjected to a small impact force, only the weakened portion 21 closest to the mounting hole 22 may be deformed, resulting in a smaller degree of crushing. In this case, it is only necessary to readjust the position of the bumper 1 to its initial position and retighten the fasteners 4 in the mounting holes 22, without directly replacing the bracket.

[0049] 4 and 5, another embodiment of the present disclosure provides a vehicle body front end assembly 10. The vehicle body front end assembly 10 includes a bumper 1, a vehicle body 3, a fastener 4, and the above-described bumper bracket 2. The bumper 1 is fixedly connected to the front end of the bumper bracket 2, and the fastener 4 is configured to pass through a mounting hole 22 to connect to the vehicle body 3. When an external force applied to the bumper bracket 2 is greater than a predetermined value, the fastener 4 moves from the mounting hole 22 to the weakened portion 21.

[0050] In the above embodiments, the fastener 4 may be a hexagonal head bolt and flat washer assembly, a hexagonal flange face bolt and flat washer assembly, a hexagonal flange face bolt and flat washer assembly, a spring washer and flat washer assembly, etc.

[0051] The upper part of the bumper 1 may be connected to a bumper bracket 2 via a plurality of screws, the left and right sides of the bumper bracket 2 are connected to the front composite lamp and fender by snap-fitting, and the lower part of the bumper bracket 2 is fixed to the lower front part of the vehicle body 3 via bolts.

[0052] The front bumper bracket 2 may stably support components such as the bumper 1, the grille upper cover plate, and the decoration of the front bumper 1, and may also provide a central through lamp mounting point for a vehicle 100 equipped with a central through lamp, and stably support the central through lamp.

[0053] When a frontal collision occurs with a pedestrian, the front hatch cover and front bumper 1 are subjected to an impact force, which is transmitted to the front bumper 1 and then to the bumper bracket 2. Weakened portions 21 are located forward of the bumper bracket 2 and the mounting holes 22 of the vehicle body 3. The structural strength of the weakened portions 21 is lower than that of the bracket 2. Therefore, the weakened portions 21 are preferentially deformed, causing the bumper bracket 2 to collapse along the longitudinal direction of the vehicle, absorbing the energy generated by the impact and reducing the reaction force on the pedestrian to fulfill the role of pedestrian protection. When collapsed, each weakened portion 21 effectively forms a cavity between the bumper 1 (collision point) and the mounting holes 22 (rigid fixed points) to cushion and absorb energy.

[0054] In addition, in the above embodiment, when a minor collision occurs, the fasteners 4 on the bumper bracket 2 of the vehicle 100 may be loosened, the position of the front bumper 1 may be adjusted, and then the fasteners 4 may be tightened, thereby reducing the cost of replacing the front bumper 1 due to damage to the front bumper 1.

[0055] Additionally, in the above embodiment, after the fasteners 4 are tightened, there is also a frictional force between the fasteners 4 and the bumper bracket 2, which may counteract the impact force generated by a milder collision. As a result, there is less damage to the body structure of the vehicle 100 when forces are generated by a milder collision, and the vehicle 100 can be more easily maintained and adjusted, so as to reduce the maintenance costs and time of the vehicle 100.

[0056] In actual use, the distance between the weakened portion 21 and the mounting hole 22 may be set according to the requirement of the crushing capacity of the bumper bracket 2. If it is desired that the bumper bracket 2 crush only in the event of a severe collision of the vehicle 100, the distance between the mounting hole 22 and the weakened portion 21 may be set relatively long. If it is desired that the bumper bracket 2 crush only in the event of a mild collision of the vehicle 100, the distance between the mounting hole 22 and the weakened portion 21 may be set relatively short. The distance between the mounting hole 22 and the weakened portion 21 is proportional to a predetermined value of the external force.

[0057] According to a third aspect of the present disclosure, there is provided a vehicle 100 as shown in FIG. 6, the vehicle 100 including the vehicle front end assembly 10 described above.

[0058] In describing the present disclosure, it should be understood that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like, indicate orientation or positional relationships based on those shown in the accompanying drawings solely for ease of description and brevity of the present disclosure, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation or be constructed or operated in a particular orientation, and therefore should not be construed as limiting the present disclosure.

[0059] Additionally, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or quantity of the indicated technical features. Thus, a feature qualified by "first" or "second" may explicitly indicate or implicitly include at least one of such features. In the description of this disclosure, unless explicitly specified, "plurality" means at least two, e.g., two or three.

[0060] It should be noted that in this disclosure, unless expressly specified and limited otherwise, the terms "attach," "connect," "couple," and "secure" should be understood broadly. For example, unless expressly specified otherwise, a connection may be a fixed connection, a detachable connection, or an integral connection, or a connection may be a mechanical connection or an electrical connection, or a connection may be a direct connection, an indirect connection through an intermediary, or an internal communication or an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the terms in this disclosure based on the particular situation.

[0061] In this disclosure, unless expressly specified and limited otherwise, a situation in which a first feature is "above" or "below" a second feature may refer to a situation in which the first and second features are in direct contact, or a situation in which the first and second features are not in direct contact but are contacted by another feature between them. Furthermore, a situation in which a first feature is "above," "top," and "upper side" of a second feature includes a situation in which the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher level than the second feature. A situation in which a first feature is "below," "below," and "lower side" of a second feature includes a situation in which the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower level than the second feature.

[0062] In the description herein, the use of reference terms such as "one embodiment," "some embodiments," "one example," "particular example," "some examples," etc. means that the particular feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present disclosure. In the present specification, the exemplary use of such terms does not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more of the embodiments or examples. Furthermore, those skilled in the art may combine different embodiments or examples described herein and features of different embodiments or examples without mutual contradiction.

[0063] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the foregoing embodiments are examples and should not be understood as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions, or variations to the foregoing embodiments within the scope of the present disclosure. [Explanation of symbols]

[0064] 1 Bumper 2 bumper brackets 21 Weakened part 211 Front groove wall 212 Posterior groove wall 213 Left Ditch Wall 214 Right groove wall 22 Mounting hole 23 Connecting part 3. Body 4 Fasteners 10 Front Body Assembly 100 vehicles

Claims

1. A bumper bracket (2) for connection to a vehicle body (3), the bumper bracket (2) being provided with a mounting hole (22) and a weakened portion (21); The mounting hole (22) is configured to connect the bumper bracket (2) to the vehicle body (3), the weakened portion (21) is disposed in front of the mounting hole (22) in the longitudinal direction of the vehicle, a protruding portion of the mounting hole (22) in the longitudinal direction of the vehicle at least partially overlaps a protruding portion of the weakened portion (21) in the longitudinal direction of the vehicle, and the structural strength of the weakened portion (21) is lower than the structural strength of the bumper bracket (2), The weakened portion (21) is strip-shaped, The angle between the extending direction of the weakened portion (21) and the longitudinal direction of the vehicle is set so as to be inversely proportional to the crushing capacity of the bumper bracket (2).

2. 2. The bumper bracket (2) of claim 1, wherein a connecting portion (23) is provided between the mounting hole (22) and the weakened portion (21), the connecting portion (23) is configured to space the mounting hole (22) from the weakened portion (21), and the width of the connecting portion (23) is inversely proportional to the crush capacity of the bumper bracket (2).

3. 3. The bumper bracket (2) according to claim 2, wherein the thickness of the weakened portion (21) is less than the thickness of the connecting portion (23).

4. 4. The bumper bracket (2) according to claim 3, wherein the thickness of the weakened portion (21) is zero and the shape of the weakened portion (21) is one of a rectangle, a trapezoid, an ellipse, a rhombus, a triangle, a hexagon, or a triangle.

5. 2. The bumper bracket (2) according to claim 1, wherein the side walls of the weakened portion (21) are flat or curved.

6. 2. The bumper bracket (2) of claim 1, wherein the weakened portion (21) is integrally formed with the bumper bracket (2).

7. 2. The bumper bracket (2) according to claim 1, wherein a plurality of weakened portions (21) are provided adjacent to each other in the front and rear directions in front of the mounting hole (22).

8. 1. A vehicle body front end assembly (10) comprising a bumper (1), a vehicle body (3), a fastener (4), and the bumper bracket (2) according to claim 1, wherein the bumper (1) is fixedly connected to the bumper bracket (2), and the fastener (4) passes through the mounting hole (22) to connect the bumper bracket (2) to the vehicle body (3), and is configured to move from the mounting hole (22) to the weakened portion (21) when an external force applied to the bumper bracket (2) is greater than a predetermined value.

9. A vehicle (100) comprising a body front end assembly (10) according to claim 8 or a bumper bracket (2) according to any one of claims 1 to 7.

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