A cantilever structure, suspension system and vehicle

Abstract

This application provides a cantilever structure, suspension system, and vehicle. The cantilever structure includes a cantilever body; the cantilever body has a bending portion, and the bending portion has a weakening structure; at least one end of the cantilever body has a reinforcing portion. Thus, by strengthening at least one end of the cantilever body through the reinforcing portion, and by guiding deformation at the bending portion of the cantilever body through the weakening structure, under conditions of excessive side impact on the vehicle chassis, the bending portion in the middle of the cantilever body undergoes bending deformation under the action of the weakening structure, absorbing the impact load and providing energy buffering, with a low risk of fracture. This reduces the risk of bending or even fracture at one end of the cantilever structure under excessive side impact conditions, enabling the cantilever structure to meet the requirements of excessive side impact conditions and giving the vehicle better stability.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, specifically relating to a cantilever structure, suspension system, and vehicle. Background Technology

[0002] In a vehicle's suspension system, the cantilever structure can bear impact loads and plays a crucial role in the overall stability of the vehicle.

[0003] In existing technologies, one end of the cantilever structure is structurally weakened to provide buckling resistance. However, under conditions of excessive side impact on the vehicle chassis, one end of the cantilever structure is prone to severe bending or even fracture, failing to meet the requirements for chassis under such conditions and affecting vehicle stability. Utility Model Content

[0004] In view of the above problems, this utility model is proposed to provide a cantilever structure, suspension system and vehicle that overcomes or at least partially solves the above problems.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application propose a cantilever structure, the cantilever structure including a cantilever body;

[0007] The cantilever body is provided with a bending section, and the bending section is provided with a weakening structure;

[0008] At least one end of the cantilever body is provided with a reinforcing part.

[0009] Optionally, the weakening structure includes a second weakening portion located on both sides of the bending portion, and the projected width of the second weakening portion on the extension surface of the reinforcing portion is smaller than the width of the reinforcing portion.

[0010] Optionally, the second weakened portion is a second opening, which includes a first notch and a second notch;

[0011] The first notch is located on one side of the bend, and the second notch is located on the other side of the bend.

[0012] Optionally, the weakening structure includes a first weakening portion, which is a first opening located between the first notch and the second notch.

[0013] Optionally, the centers of the first opening and the second opening are located on the same straight line.

[0014] Optionally, the diameter of the first opening is any value between 40 and 45 mm;

[0015] And / or, the length of the second opening is any value between 50 and 55 mm, and the width of the second opening is any value between 13 and 15 mm.

[0016] Optionally, the bent portion is an arc-shaped bent portion.

[0017] Optionally, at least one end of the cantilever body is provided with a connection port, and the reinforcing part is connected to both sides of the connection port along the width direction of the cantilever body.

[0018] Optionally, the reinforcing part includes a first flange and a second flange, wherein the first flange is connected to one side of the connection port and the second flange is connected to the other side of the connection port.

[0019] Optionally, the width of the first flange is any value between 25 and 30 mm, and the width of the second flange is any value between 25 and 30 mm.

[0020] Secondly, embodiments of this application propose a suspension system, which includes the aforementioned cantilever structure.

[0021] Thirdly, embodiments of this application provide a vehicle that includes the aforementioned suspension system or the aforementioned cantilever structure.

[0022] In this embodiment, the cantilever structure includes a cantilever body; the cantilever body has a bending portion, and the bending portion has a weakening structure; at least one end of the cantilever body has a reinforcing portion. Thus, by strengthening at least one end of the cantilever body through the reinforcing portion, and by guiding deformation at the bending portion of the cantilever body through the weakening structure, under conditions of excessive side impact on the vehicle chassis, the side of the cantilever body is subjected to impact load. When the impact force acts on the bending portion, the bending portion bends under the action of its weakening structure to absorb the impact load and the impact energy received by the cantilever body, thus providing energy absorption and buffering with a low risk of fracture. Then, the impact force is dispersed and transmitted along the extension direction of the cantilever body to its end. When the impact force is transmitted to the end of the cantilever body, the reinforcing portion strengthens at least one end, reducing the risk that the cantilever structure is prone to severe bending or even fracture. Therefore, the cantilever structure of this application reduces the risk of one end of the cantilever structure bending or even breaking under chassis abusive side impact conditions, so that the cantilever structure meets the requirements of chassis abusive side impact conditions, and also makes the vehicle have better stability.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of a cantilever structure described in an embodiment of this application.

[0026] Reference numerals: 10-Cantilever body; 20-Bending part; 30-Reinforcing part; 21-First opening; 22-First notch; 23-Second notch; 11-Connecting port; 31-First flange; 32-Second flange. Detailed Implementation

[0027] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0028] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In current extruded aluminum spring arm designs, the elongation of the aluminum material is usually less than 10%, making it prone to breakage. This is in contrast to traditional spring arms designed with steel stamping and welding, where the elongation of the steel plate is usually above 12%. As a result, extruded aluminum spring arms are less able to absorb the energy from side impacts under chassis abuse conditions, leading to easy breakage and damage.

[0032] Reference Figure 1 The diagram shows a schematic of a cantilever structure according to an embodiment of the present application. The cantilever structure may specifically include: a cantilever body; the cantilever body 10 is provided with a bending portion 20, the bending portion 20 is provided with a weakening structure; and at least one end of the cantilever body 10 is provided with a reinforcing portion 30.

[0033] In this embodiment, at least one end of the cantilever body 10 is structurally reinforced by the reinforcing part 30, and deformation guidance is achieved at the bending part 20 of the cantilever body 10 through a weakening structure. Under conditions of excessive side impact on the vehicle chassis, the side of the cantilever body 10 is subjected to impact load. When the impact force acts on the bending part 20, the bending part 20 bends to absorb the impact load under the action of its weakening structure, absorbing the impact energy received by the cantilever body 10, thus providing energy absorption and buffering with a low risk of fracture. The impact force is then dispersed and transmitted along the extension direction of the cantilever body 10 to its end. When the impact force is transmitted to the end of the cantilever body 10, the reinforcing part 30 structurally reinforces at least one end, reducing the risk of severe bending or even fracture of the cantilever structure. Therefore, the cantilever structure of this embodiment reduces the risk of bending or even fracture at one end of the cantilever structure under conditions of excessive side impact on the chassis, enabling the cantilever structure to meet the requirements of such conditions and providing the vehicle with better stability.

[0034] Specifically, in this embodiment, the cantilever body 10 extends along its length and may include two oppositely disposed ends. For example, a reinforcing portion 30 may be provided at one end of the cantilever body 10 to structurally strengthen that end and improve its impact resistance. Alternatively, a reinforcing portion 30 may be provided at the other end of the cantilever body 10 to structurally strengthen that end and improve its impact resistance. Furthermore, reinforcing portions 30 may be provided at both ends of the cantilever body 10 to structurally strengthen both ends, further improving the impact resistance of the cantilever structure. For example, the bending portion 20 may be disposed in the middle of the cantilever body 10, providing better uniformity and stability of force transmission to both ends of the cantilever structure.

[0035] For example, in this embodiment, the cantilever body 10 is a one-piece molded structure, which can be manufactured by extrusion molding, giving the cantilever body 10 high connection strength and reducing material loss and manufacturing processes. The material of the cantilever body 10 in this example can be aluminum; however, it can also be steel, etc. This embodiment does not limit the specific material of the cantilever body 10.

[0036] In this embodiment, for example, the cantilever body 10 extends along its length and includes two oppositely disposed ends, a first end and a second end. The first end has a connection port 11, and the second end has a mounting port. The connection port 11 and the mounting port are used to connect to other structures within the vehicle, such as the connection port 11 for connecting to the subframe and the mounting port for connecting to the steering knuckle. By providing a reinforcing portion 30 at the first end, the connection strength of the connection port 11 and its resistance to impact loads are improved.

[0037] Optionally, in this embodiment, the weakening structure includes a first weakening portion and a second weakening portion, which are spaced apart. The first weakening portion is located in the middle region of the bent portion 20, and the second weakening portion is located in the side region of the bent portion 20. Thus, by weakening the middle region of the bent portion 20 with the first weakening portion, the middle region of the bent portion 20 is made more susceptible to bending deformation under external impact, absorbing loads. Similarly, by weakening the side region of the bent portion 20 with the second weakening portion, the side region of the bent portion 20 is also made more susceptible to bending deformation under external impact, absorbing loads. Furthermore, the bent portion 20 as a whole has better buckling resistance, reducing the risk of fracture.

[0038] In this embodiment, optionally, the second weakening portion is located on both sides of the bending portion 20, and the second weakening portion is located on both sides of the cantilever body 10 along the width direction. The projected width of the second weakening portion on the extension surface of the reinforcing portion 30 is smaller than the width of the reinforcing portion 30. Thus, by providing the second weakening portion on both sides of the bending portion 20, the cantilever body 10 can deform and absorb loads on both sides along the width direction, effectively coping with the impact loads received by the vehicle chassis under side impact conditions. Furthermore, by setting the projected width of the second weakening portion on the extension surface of the reinforcing portion 30 to be smaller than the width of the reinforcing portion 30, the second weakening portion has a better weakening effect on both sides of the bending portion 20, achieving energy absorption and buffering while avoiding a large projected width of the second weakening portion on the extension surface of the reinforcing portion 30 that would reduce toughness and lower the risk of the bending portion 20 easily breaking. Additionally, it avoids the projected width of the second weakening portion on the extension surface of the reinforcing portion 30 being greater than or equal to the width of the reinforcing portion 30, which would affect the overall structural strength of the cantilever structure.

[0039] Optionally, in this embodiment, the second weakening portion is a second opening, which includes a first notch 22 and a second notch 23. The first notch 22 is located on one side of the bent portion 20, and the second notch 23 is located on the other side of the bent portion 20. In this way, the first notch 22 weakens the strength of one side of the bent portion 20, and the second notch 23 weakens the strength of the other side of the bent portion 20. For example, the first notch 22 and the second notch 23 can be symmetrically distributed, which has a relatively uniform weakening effect on both sides of the bent portion 20, so that both sides of the bent portion 20 have better deformation stability, reduce the risk of fracture, and improve the energy absorption buffer effect and structural stability of the bent portion 20.

[0040] In this embodiment, optionally, the first weakening part is a first opening 21, located between the first notch 22 and the second notch 23. Thus, by using the first opening 21 as the first weakening structure, the strength of the middle region of the bent portion 20 is weakened. This allows the first opening 21, the first notch 22, and the second notch 23 to collectively weaken both the middle and side portions of the bent portion 20. This makes the bent portion 20 between the first opening 21 and the first notch 22 more susceptible to deformation and bending under lateral impact conditions, and also makes the bent portion 20 between the first opening 21 and the second notch 23 more susceptible to deformation and bending under lateral impact conditions, further improving the deformation reliability and stability of the bent portion 20.

[0041] Optionally, in this embodiment, the centers of the first opening 21 and the second opening are located on the same straight line. Specifically, the second opening includes a first notch 22 and a second notch 23, that is, the center points of the first opening 21, the first notch 22, and the second notch 23 are located on the same straight line. In this way, under the condition of side impact, the impact force can be transmitted and distributed more evenly along this straight line. In the early stage of deformation, the weak areas at the first opening 21 and the second opening can begin to yield and deform relatively synchronously, avoiding excessive local stress concentration that could lead to premature failure of a certain area. This makes the deformation process of the entire bending part 20 more stable and coordinated, which is conducive to achieving a uniform energy absorption effect. Furthermore, since the lines of action of the force are consistent, it reduces unstable deformation modes such as torsion and local wrinkling that may occur due to uneven force distribution. This allows the bending part 20 to deform in the expected bending manner, better exerting its energy absorption and buffering role, and helping to maintain the overall stability of the cantilever body 10 during the deformation process. In addition, it allows the first hole and the second opening to cooperate with each other when subjected to force, forming a relatively continuous deformation area. When an external force is applied, the first opening 21 in the middle and the second openings on both sides can participate in deformation simultaneously, jointly absorbing energy, thereby expanding the effective deformation range of the entire cantilever body 10 and increasing the total energy absorption. In addition, during processing and assembly, the linear arrangement of the first opening 21 and the second opening structure makes it easier to align and fit together.

[0042] For example, in this embodiment, the number of first notches 22 may include multiple first notches 22, which are spaced apart on one side of the bend 20, such as two or three, etc. This embodiment does not limit the specific number of first notches 22. Similarly, the number of second notches 23 may also include multiple second notches 23, which are spaced apart on the other side of the bend 20, such as two or three, etc. This embodiment does not limit the specific number of second notches 23. Furthermore, the number of first notches 22 and the number of second notches 23 may be the same or different, and this embodiment does not limit this as well.

[0043] For example, in this embodiment, the first opening 21 can be located at the center of the bent portion 20. Alternatively, the first opening 21 can be located slightly to the left or right of the central region. This embodiment does not limit the specific location of the first opening 21. In this embodiment, the number of first openings 21 can be one, two (symmetrically distributed), three, four, etc. This embodiment does not limit the specific number or arrangement of the first openings 21.

[0044] Optionally, in this embodiment, the first opening 21 is circular or elliptical, capable of bearing a large impact load, so that the middle area of ​​the bent portion 20 has a good buffering and energy absorption effect on the impact load; and / or, the second opening is C-shaped or U-shaped, the second opening is located on the side area of ​​the bent portion 20 on the cantilever body 10, forming a C-shaped or U-shaped notch, which is easy to bend and deform, so that the side area of ​​the bent portion 20 has a good buffering and energy absorption effect on the impact load.

[0045] In this embodiment, optionally, the diameter of the first opening 21 is any value between 40-45 mm. This ensures that the first opening 21 has a suitable diameter, avoiding excessively large diameters that would result in low structural strength and easy breakage in the middle region of the bent portion 20, and also avoiding excessively small diameters that would have a poor weakening effect on the middle region of the bent portion 20. And / or, the length of the second opening is any value between 50-55 mm, and the width of the second opening is any value between 13-15 mm. Specifically, the length of the second opening is the dimension of the cantilever body 10 along its length direction, and the width of the second opening is the maximum dimension of the cantilever body 10 along its width direction, i.e., the depth of the second opening. This ensures that the second opening has a suitable length and width, avoiding excessively large length and widths that would result in low structural strength and easy breakage in the side region of the bent portion 20, and also avoiding excessively small diameters that would have a poor weakening effect on the side region of the bent portion 20.

[0046] For example, in this embodiment, the diameter of the first opening 21 can be 40mm, 42mm, or 45mm, etc., and the specific value of the diameter of the first opening 21 is not limited in this embodiment. The length of the second opening can be 50mm, 53mm, or 55mm, etc., and the specific value of the length of the second opening is not limited in this embodiment. Similarly, the width of the second opening can be 13mm, 14mm, or 15mm, etc., and the specific value of the width of the second opening is not limited in this embodiment.

[0047] Optionally, in this embodiment, the bending portion 20 is an arc-shaped bending portion. This ensures a more uniform stress distribution on the bending portion 20 under conditions of excessive side impact on the vehicle chassis, reducing the risk of fatigue cracks, improving fatigue strength and service life, and providing higher load-bearing capacity, thus giving the cantilever structure better stability and reliability.

[0048] Optionally, at least one end of the cantilever body 10 is provided with a connection port 11, and a reinforcing part 30 is connected to both sides of the connection port 11 along the width direction of the cantilever body 10. In this way, by strengthening both sides of the connection port 11 with the reinforcing part 30, the risk of breakage at the connection port 11 is reduced, and the connection port 11 has better connection reliability and stability when connected to the subframe or steering knuckle.

[0049] Optionally, in this embodiment, the reinforcing part 30 includes a first flange 31 and a second flange 32. The first flange 31 is connected to one side of the connection port 11, and the second flange 32 is connected to the other side of the connection port 11. In this way, the first flange 31 strengthens one side of the connection port 11, and the second flange 32 strengthens the other side of the connection port 11, so that both sides of the connection port 11 have better structural strength and stability, reducing the risk of breakage.

[0050] In this embodiment, optionally, the width of the first flange 31 is any value between 25-30 mm, and the width of the second flange 32 is any value between 25-30 mm. This ensures that the first flange 31 has a suitable width, avoiding an excessively large width that would exceed the width of the cantilever body 10, affecting the overall structure, and also avoiding an insufficiently small width that would result in poor structural reinforcement on one side of the connection port 11. Similarly, the second flange 32 has a suitable width, avoiding an excessively large width that would exceed the width of the cantilever body 10, affecting the overall structure, and also avoiding an insufficiently small width that would result in poor structural reinforcement on the other side of the connection port 11.

[0051] For example, in this embodiment, the width of the first flange 31 can be 25mm, 27mm, or 30mm, etc., and can be set according to actual needs. This embodiment does not limit the specific value of the width of the first flange 31. Similarly, the width of the second flange 32 can also be 25mm, 27mm, or 30mm, etc., and can be set according to actual needs. This embodiment does not limit the specific value of the width of the second flange 32. The first flange 31 and the second flange 32 are symmetrically distributed relative to the connection opening 11, and their widths are usually the same, so that the first flange 31 and the second flange 32 have a good structural reinforcement effect on both sides of the connection opening 11.

[0052] In this embodiment, for example, at least one end of the cantilever body 10 is provided with a connection port 11, and the second end is provided with a mounting port. Mounting holes can be provided on the two side surfaces of the connection port 11 and the mounting port respectively, for fasteners such as bolts or screws to pass through. For example, the shapes of the mounting port and the connection port 11 can be U-shaped or C-shaped, etc., and the dimensions of the mounting port and the connection port 11 can be the same or different. This embodiment does not limit the specific shape and size of the mounting port and the connection port 11.

[0053] For example, in this embodiment of the application, the cantilever body 10 has an opening near the second end for installing a hollow spring. The opening can be circular or elliptical, and its size is adapted to the size of the hollow spring. In this embodiment of the application, the specific shape and size of the opening are not limited.

[0054] In summary, the cantilever structure described in the embodiments of this application may include at least the following advantages:

[0055] In this embodiment, the cantilever structure includes a cantilever body; the cantilever body has a bending portion, and the bending portion has a weakening structure; at least one end of the cantilever body has a reinforcing portion. Thus, by strengthening at least one end of the cantilever body through the reinforcing portion, and by guiding deformation at the bending portion of the cantilever body through the weakening structure, under conditions of excessive side impact on the vehicle chassis, the side of the cantilever body is subjected to impact load. When the impact force acts on the bending portion, the bending portion bends under the action of its weakening structure to absorb the impact load and the impact energy received by the cantilever body, thus providing energy absorption and buffering with a low risk of fracture. Then, the impact force is dispersed and transmitted along the extension direction of the cantilever body to its end. When the impact force is transmitted to the end of the cantilever body, the reinforcing portion strengthens at least one end, reducing the risk that the cantilever structure is prone to severe bending or even fracture. Therefore, the cantilever structure of this application reduces the risk of one end of the cantilever structure bending or even breaking under chassis abusive side impact conditions, so that the cantilever structure meets the requirements of chassis abusive side impact conditions, and also makes the vehicle have better stability.

[0056] This application provides a suspension system, which includes the aforementioned cantilever structure.

[0057] For example, in this embodiment, the suspension system may include a subframe and a steering knuckle. At least one end of the cantilever body 10 of the cantilever structure, for example, the right end, is connected to the subframe, and the second end of the cantilever body 10, for example, the left end, is connected to the steering knuckle. For example, the cantilever body 10, the subframe, and the steering knuckle can be connected to each other using fasteners such as nuts or bolts. The specific connection method is not limited in this embodiment.

[0058] The cantilever system described in this application embodiment may include at least the following advantages:

[0059] In this embodiment, the suspension system includes the cantilever structure, which includes a cantilever body. The cantilever body has a bending portion and a weakening structure. At least one end of the cantilever body has a reinforcing portion. Thus, the reinforcing portion structurally strengthens at least one end of the cantilever body, and the weakening structure guides deformation at the bending portion. Under conditions of excessive side impact on the vehicle chassis, the side of the cantilever body is subjected to impact load. When the impact force acts on the bending portion, the weakening structure causes the bending portion to bend and absorb the impact load, thus absorbing the impact energy of the cantilever body and providing energy buffering with a low risk of fracture. The impact force is then dispersed and transmitted along the extension direction of the cantilever body to its end. When the impact force reaches the end of the cantilever body, the reinforcing portion structurally strengthens at least one end, reducing the risk of severe bending or even fracture of the cantilever structure. Therefore, the cantilever structure of this application reduces the risk of one end of the cantilever structure bending or even breaking under chassis abusive side impact conditions, so that the cantilever structure meets the requirements of chassis abusive side impact conditions, and also makes the vehicle have better stability.

[0060] This application also provides a vehicle, which includes the suspension system or the cantilever structure described above.

[0061] For example, in the embodiments of this application, the vehicle may include pure electric vehicles, hybrid vehicles, range-extended vehicles, fuel vehicles, etc. The type of vehicle may also include small cars, medium-sized cars, sedans, trucks, trailers, CDVs (Car Derived Vans), MPVs (multi-Purpose Vehicles), SUVs (Sport Utility Vehicles), etc. The specific type of vehicle is not limited in the embodiments of this application.

[0062] The vehicle described in this application embodiment may include at least the following advantages:

[0063] In this embodiment, the vehicle includes the aforementioned suspension system or the aforementioned cantilever structure. The suspension system includes the aforementioned cantilever structure, which includes a cantilever body. The cantilever body has a bending portion and a weakening structure. At least one end of the cantilever body has a reinforcing portion. Thus, by strengthening at least one end of the cantilever body through the reinforcing portion, and by guiding deformation at the bending portion of the cantilever body through the weakening structure, under conditions of excessive side impact on the vehicle chassis, the side of the cantilever body is subjected to impact load. When the impact force acts on the bending portion, the bending portion bends under the action of its weakening structure to absorb the impact load and the impact energy received by the cantilever body, thus providing energy absorption and buffering with a low risk of fracture. Then, the impact force is dispersed and transmitted along the extension direction of the cantilever body to its end. When the impact force is transmitted to the end of the cantilever body, the reinforcing portion strengthens at least one end, reducing the risk of severe bending or even fracture of the cantilever structure. Therefore, the cantilever structure of this application reduces the risk of one end of the cantilever structure bending or even breaking under chassis abusive side impact conditions, so that the cantilever structure meets the requirements of chassis abusive side impact conditions, and also makes the vehicle have better stability.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cantilever structure, characterized by, The cantilever structure includes a cantilever body (10); The cantilever body (10) is provided with a bending portion (20), and the bending portion (20) is provided with a weakening structure; At least one end of the cantilever body (10) is provided with a reinforcing part (30).

2. The cantilever structure of claim 1, wherein, The weakening structure includes a second weakening part, which is located on both sides of the bending part (20). The projection width of the second weakening part on the extension surface of the reinforcing part (30) is smaller than the width of the reinforcing part (30).

3. The cantilever structure of claim 2, wherein, The second weakened part is a second opening, which includes a first notch (22) and a second notch (23); The first notch (22) is located on one side of the bend (20), and the second notch (23) is located on the other side of the bend (20).

4. The cantilever structure of claim 3, wherein, The weakening structure includes a first weakening part, which is a first opening (21) located between the first notch (22) and the second notch (23).

5. The cantilever structure according to claim 4, characterized in that, The centers of the first opening (21) and the second opening are located on the same straight line.

6. The cantilevered structure of claim 4, wherein, The diameter of the first opening (21) is any value between 40 and 45 mm; And / or, the length of the second opening is any value between 50 and 55 mm, and the width of the second opening is any value between 13 and 15 mm.

7. The cantilever structure according to any one of claims 1 to 6, characterized in that The bending portion (20) is an arc-shaped bending portion.

8. The cantilever structure according to any one of claims 1-6, characterized in that, The cantilever body (10) has a connection port (11) at at least its first end, and the reinforcing part (30) is connected to both sides of the connection port (11) along the width direction of the cantilever body (10).

9. The cantilever structure of claim 8, wherein, The reinforcing part (30) includes a first flange (31) and a second flange (32), the first flange (31) being connected to one side of the connection port (11) and the second flange (32) being connected to the other side of the connection port (11).

10. The cantilever structure of claim 9, wherein, The width of the first flange (31) is any value between 25 and 30 mm, and the width of the second flange (32) is any value between 25 and 30 mm.

11. A suspension system characterized by, The suspension system includes the cantilever structure as described in any one of claims 1-10.

12. A vehicle characterized by comprising: The vehicle includes the suspension system of claim 11, or the cantilever structure of any one of claims 1-10.

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