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 entirety of which is incorporated herein by reference.

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

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

[0004] In the prior art, the shock-absorbing deformation ability of the bumper is improved by adding elastic shock-absorbing parts, airbags, etc. This method can realize the crushing of the bumper, but the number of parts required in this method is large, and at the same time, the secondary damage to the pedestrian impact is large due to the recovery deformation of the elastic parts after elastic deformation. 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, the bumper bracket being configured to be coupled to a vehicle body, the bumper bracket being provided with a mounting hole and a weakening portion, the mounting hole being configured to couple the bumper bracket to the vehicle body, the weakening portion being disposed forward of the mounting hole in the vehicle front-rear direction, a protruding portion of the mounting hole in the vehicle front-rear direction at least partially overlapping a protruding portion of the weakening portion in the vehicle front-rear direction, and a structural strength of the weakening portion being lower than a structural strength of the bumper bracket.

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

[0008] In one embodiment, the weakened portion is strip-shaped, and the included 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 rhombus, 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 forward of the mounting hole.

[0014] A second aspect of the present disclosure provides a vehicle body front end assembly, the vehicle body front end assembly including a bumper, a vehicle body, a fastener, and the bumper bracket described above, the bumper being fixedly coupled to a front end of the bumper bracket, the fastener passing through a mounting hole to couple the bumper bracket to the vehicle body, and 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-mentioned vehicle body front end assembly or the above-mentioned 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 the bumper bracket, and when the vehicle hits a pedestrian, the bumper bracket receives a force toward the rear of the vehicle, and the fastener moves from the mounting hole to the weakened portion. Due to the weak strength of the weakened portion, the weakened portion is more prone 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 the deformation recovery after deformation, thereby reducing the damage to the pedestrian and improving the buffering deformation capacity of the vehicle bumper system. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic structural diagram showing a bumper bracket according to one embodiment of the present disclosure. [Diagram 2] FIG. 2 is an enlarged view of the bumper bracket at B shown in FIG. 1. [Diagram 3] 2 is a schematic cross-sectional view of the bumper bracket taken along line AA in FIG. 1. [Figure 4] 1 is a schematic structural diagram of a bumper bracket mounting structure according to one embodiment of the present disclosure. [Diagram 5] FIG. 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 PREFERRED EMBODIMENTS

[0019] The embodiments of the present disclosure are described in detail below. Examples of the embodiments are illustrated in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar components, or components having the same or similar functions, in all of the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative and are intended to illustrate 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. In the front-rear direction of the vehicle, the weakened portion 21 is provided in front of the mounting hole 22, a protruding portion of the mounting hole 22 in the front-rear direction of the vehicle and a protruding portion of the weakened portion 21 in the front-rear 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 part 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 part of the vehicle in normal use. The end of the bumper bracket 2 that faces the front part of the vehicle is connected to the bumper 1, and the end that faces the rear part 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 Fig. 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 that of the bumper bracket 2. Specifically, in order to realize the situation that the strength of the weakened portion 21 is lower than that 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 having a relatively weak structural strength may be used in the weakened portion 21, and of course, 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 is provided to improve the buffer deformation ability of the bumper 1 system of the vehicle 100. The specific principle is as follows: in normal use, the vehicle body 3 is mounted to the mounting hole 22 at the rear end of the bracket by 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 action force toward the rear of the vehicle, which is transmitted to the vehicle body 3 through the fasteners, and the vehicle body 3 is fixedly connected to the vehicle frame, so that the vehicle body 3 transmits a reaction force to the bumper bracket 2 through the fasteners 4 (the direction of 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 likely to plastically deform than other areas of the bumper bracket 2, so as to achieve the energy absorption effect. The mounting hole 22 and the protruding portion of the weakened portion 21 of the bumper bracket 2 in the front-to-rear direction of the vehicle overlap each other, so that after a collision occurs, the fastener 4 moves from the mounting hole 22 to the weakened portion 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 damage to pedestrians caused by the recovery of deformation after the weakened portion 21 is 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 the ease with which 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 not easy to crush, it is called a small crush capacity.

[0032] When the width of the connecting portion 23 is relatively large, i.e., the distance between the weakened portion 21 and the bolt mounting hole 22 is relatively far, the connecting rib between the weakened portion 21 and the bolt mounting hole 22 is relatively wide, and the connecting portion 23 can be separated only when a relatively large impact force occurs. That is, the bumper bracket 2 can be crushed only when the bumper 1 receives a relatively large impact, and the bumper is not easily crushed, and therefore the crushing capacity is small. Conversely, when the width of the connecting portion 23 is relatively small, i.e., the distance between the weakened portion 21 and the bolt mounting hole 22 is relatively close, the connecting rib between the weakened portion 21 and the bolt mounting hole 22 is relatively narrow, and the connecting portion 23 can be separated only by a relatively small impact force. That is, the bumper bracket 2 can be crushed only when the bumper 1 receives a relatively small impact, and the bumper is easily 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 as long as possible to allow a larger degree of crushing deformation when there is enough space.

[0034] In addition, it can be seen that 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 easily occur, and the crushing ability 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 ability is small. Therefore, the specific width of the weakened portion 21 may be adjusted according to the requirement of the crushing ability.

[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 occurs. 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 included angle between the extension direction of the weakened portion 21 and the front-rear 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 be generated by the force generated after the impact to break the connection portion 23 between the weakened portion 21 and the mounting hole 22, so that the crushing can occur only after a large impact force occurs. Therefore, during actual use, the extension direction of the weakened portion 21 may be adjusted according to requirements. When it is required that the bumper bracket 2 has a relatively large crushing ability, the included angle between the weakened portion 21 and the first direction may be reduced, and when it is required that the bumper bracket 2 has a relatively small crushing ability, the included angle between the weakened portion 21 and the first direction may be expanded.

[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 manner 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 that of other regions of the bumper bracket 2.

[0041] Regarding the shape setting of the weakened portion 21, in practical use, the weakened portion 21 may be set in a conventional shape such as an elliptical, diamond, trapezoidal, triangular or hexagonal structure, or may be set in any other non-conventional shape.

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

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

[0044] The above embodiment provides a specific shape of the weakened portion 21. That is, the weakened portion 21 is configured as a weakened groove, and the weakened groove is a rectangular hole or a trapezoid hole, which is integrally including a front groove wall 211, a rear groove wall 212, a left groove wall 213, and a right groove wall 214, and the four groove walls jointly define the weakened groove. The four groove walls of the weakened groove may be set as a flat or curved surface, and the left groove wall 213 and the right groove wall 214 may also be arranged as a staggered curved surface according to need, and the connection part of the four groove walls may be rounded according to requirements. Under the condition that the strength requirements of the mounting bracket of the bumper 1 are met, the size of the width, length, and thickness of the weakened groove may be flexibly adjusted according to different shapes of the bumper 1, the requirements of force failure, etc., so as to adjust the crushing degree and deformation degree.

[0045] The weakened portion 21 may be formed in a number of ways, for example, the weakened portion 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 cushioning components. The bumper 1 assembly is simple in structure, reduces assembly, and is relatively inexpensive.

[0047] 4, 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 front-rear direction of the vehicle. The center line of the weakened portions 21 and the center line of the mounting hole 22 are arranged in the same direction, the arrangement position of the weakened portions 21 can be flexibly set, and the weakened portions 21 may be arranged in a place where breakage is expected in the event of a collision.

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

[0049] As shown in Figures 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-mentioned bumper bracket 2. The bumper 1 is fixedly connected to a front end of the bumper bracket 2, and the fastener 4 is configured to pass through a mounting hole 22 to connect the bumper bracket 2 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 portion of the bumper 1 may be connected to a bumper bracket 2 via a number of screws, the left and right sides of the bumper bracket 2 are snap-fitted to the front composite lamp and fender, and the lower portion of the bumper bracket 2 is fixed to the front lower portion of the vehicle body 3 via a bolt.

[0052] The front bumper bracket 2 may stably support components such as the bumper 1, the grill 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 front collision occurs on a pedestrian, the front hatch cover and the front bumper 1 are subjected to an impact force, and the acting force is transmitted to the front bumper 1, and then the force is transmitted to the bumper bracket 2. The weakened parts 21 are arranged in the front direction of the bumper bracket 2 and the mounting holes 22 of the vehicle body 3, and the structural strength of the weakened parts 21 is lower than that of the bracket 2, therefore, the weakened parts 21 are preferentially deformed, so that the bumper bracket 2 is crushed along the front-rear direction of the vehicle, and the energy generated by the impact is absorbed, and the reaction force to the pedestrian is reduced so as to play the role of pedestrian protection. Each weakened part 21 during crushing is equivalent to forming a cavity between the bumper 1 (collision point) and the mounting holes 22 (rigid fixed points) to buffer 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] In addition, in the above embodiment, after the fastener 4 is tightened, there is also a friction force between the fastener 4 and the bumper bracket 2, and the friction force between the fastener 4 and the bumper bracket 2 may counteract the impact force generated by a milder collision. As a result, the damage to the body structure of the vehicle 100 is reduced when the force is generated by a milder collision, and the vehicle 100 can be more conveniently maintained and adjusted, so as to reduce the maintenance cost and maintenance time of the vehicle 100.

[0056] In practical 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 crushes only in the case 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 crushes in the case 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 devices or elements referred to need have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present disclosure.

[0059] In addition, 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 expressly 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 "fixed" should be understood in a broad sense. For example, unless expressly specified otherwise, a connection may be a fixed connection, a removable 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 interaction 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 feature and the second feature are in direct contact with each other, or may refer to a situation in which the first feature and the second feature are not in direct contact with each other, but are in contact with each other through 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 elevation than the second feature. A situation in which a first feature is "below," "bottom," 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 elevation than the second feature.

[0062] In the description of this specification, the description of a reference term such as "one embodiment", "some embodiments", "one example", "particular example", "some examples" means that the particular feature, structure, material, or characteristic described in combination with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. In addition, the particular feature, structure, material, or characteristic described may be combined in any suitable manner in any one or more of the embodiments or examples. Furthermore, a person skilled in the art may combine different embodiments or examples described herein with 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 aforementioned embodiments are illustrative and should not be understood as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions or variations to the aforementioned embodiments within the scope of the present disclosure. [Explanation of symbols]

[0064] 1 Bumper 2 Bumper bracket 21 Weakened part 211 Front Ditch 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 end 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) and 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 with a protruding portion of the weakened portion (21) in the longitudinal direction of the vehicle, and a structural strength of the weakened portion (21) is lower than a structural strength of the bumper bracket (2); 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 a width of the connecting portion (23) is inversely proportional to a crush capacity of the bumper bracket (2).

3. 3. The bumper bracket (2) according to claim 2, wherein the weakened portion (21) is strip-shaped, and an included angle between an extension direction of the weakened portion (21) and a longitudinal direction of the vehicle is inversely proportional to a crushing capacity of the bumper bracket (2).

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

5. 5. The bumper bracket (2) according to claim 4, 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.

6. A bumper bracket (2) according to any one of claims 1 to 5, wherein the side walls of the weakened portion (21) are flat or curved.

7. A bumper bracket (2) according to any one of claims 1 to 6, wherein the weakened portion (21) is integrally formed with the bumper bracket (2).

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

9. 9. A vehicle body front end assembly (10) comprising a bumper (1), a vehicle body (3), a fastener (4), and a bumper bracket (2) according to any one of claims 1 to 8, 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.

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

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