Front bumper and vehicle

Abstract

The invention discloses a front bumper which comprises a body suitable for being arranged on a vehicle body, a front bumper body and a rear bumper body. The flexible part is arranged at the bottom of the body; the flexible part has an initial state and a first state, and the sectional area of the front bumper in the first state is larger than that of the front bumper in the initial state. The anti-drag requirement can be effectively met, airflow flowing loss caused by the modeling design of the front bumper is reduced, and the aerodynamic performance of the whole vehicle is improved; and the front bumper fully participates in the water-related working condition of the vehicle, so that the water-related capability of the vehicle is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a front bumper and a vehicle. Background Art

[0002] Due to the vehicle's styling design, the existing front structure of the vehicle, such as the front bumper styling design, causes airflow loss, and thus cannot effectively meet the vehicle's drag reduction needs; moreover, the existing front bumper hardly participates in the vehicle's wading and cannot contribute to the wading function. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a front bumper with a variable cross-section that effectively meets the requirements for drag reduction, reduces airflow losses caused by the front bumper's design, and improves the aerodynamic performance of the vehicle. Furthermore, the front bumper fully participates in the vehicle's wading and floating conditions, thereby enhancing the vehicle's wading and floating capabilities.

[0004] A second object of the present invention is to provide a vehicle.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An embodiment of a first aspect of the present invention provides a front bumper, the front bumper comprising: a body, the body being adapted to be disposed on a vehicle body;

[0007] A flexible portion is provided at the bottom of the body; the flexible portion has an initial state and a first state, wherein a cross-sectional area of the front bumper in the first state is larger than a cross-sectional area of the front bumper in the initial state.

[0008] According to the front bumper of an embodiment of the present invention, the flexible part is connected to the bottom of the main body of the front bumper, and the flexible part can be deformed so that the cross-section of the front bumper can be variable, which can effectively meet the drag reduction requirements, reduce the airflow loss caused by the styling design, and improve the aerodynamic performance of the entire vehicle; and enable the front bumper to fully participate in the vehicle's wading and floating conditions, thereby enhancing the vehicle's wading and floating capabilities.

[0009] In some embodiments, the flexible portion includes a rubber that can be stretched or tightened.

[0010] In some embodiments, the flexible portion includes an airbag that is inflatable and deflable.

[0011] In some embodiments, the airbag is provided with a first clip, and the body is correspondingly provided with a second clip, and the first clip and the second clip can be engaged with each other.

[0012] In some embodiments, the front bumper also includes an air pump, which is arranged on the side of the bottom facing away from the airbag. The air pump includes a first air end, which is connected to the first air port of the airbag, and the first air end is used to transport gas to the inside of the airbag; the air pump also includes a second air end, which is connected to the second air port of the airbag, and the second air end is used to extract the gas from the inside of the airbag.

[0013] In some embodiments, the front bumper further includes a sensor, which is disposed on a side of the bottom facing away from the airbag. The sensor includes one or more of a speed sensor, a pressure sensor, and a wading depth sensor.

[0014] A second aspect of the present invention provides a vehicle, comprising a controller and the front bumper described in the above embodiment, wherein the controller is configured to control the flexible portion to switch between the first state and the initial state.

[0015] According to the vehicle of an embodiment of the present invention, the flexible portion is connected to the bottom of the main body of the front bumper, and the flexible portion can be deformed so that the cross-section of the front bumper can be changed. The controller is used to control the flexible portion to switch between the first state and the initial state, which can effectively meet the drag reduction requirements, reduce the airflow loss caused by the styling design, and improve the aerodynamic performance; enable the front bumper to fully participate in the vehicle's wading and floating conditions, and enhance the vehicle's wading and floating capabilities.

[0016] In some embodiments, the controller is configured to control the flexible portion to be in the first state when the wading depth of the vehicle is greater than a first threshold.

[0017] In some embodiments, the controller is configured to control the flexible portion to be in the initial state when the wading depth of the vehicle is less than or equal to a first threshold and the speed of the vehicle is less than or equal to a second threshold.

[0018] In some embodiments, the controller is configured to control the flexible portion to be in the first state so that the cross-sectional area of the front bumper is S1 when the wading depth of the vehicle is less than or equal to a first threshold and the speed of the vehicle is greater than a second threshold.

[0019] In some embodiments, the controller is configured to: when the wading depth of the vehicle is less than or equal to the first threshold and the speed of the vehicle is greater than the second threshold; when it is detected that the acceleration of the vehicle becomes larger, control the flexible portion to be in the first state so that the cross-sectional area of the front bumper is S2, where S2 is greater than S1.

[0020] In some embodiments, the vehicle further comprises a power source electrically connected to the air pump of the front bumper. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 is a schematic diagram of a front bumper according to one embodiment of the present invention;

[0023] Figure 2 According to the present invention Figure 1 A partial schematic diagram of

[0024] Figure 3 is a cross-sectional view of an airbag according to one embodiment of the present invention;

[0025] Figure 4 is a cross-sectional view of an airbag according to another embodiment of the present invention;

[0026] Figure 5 A front view of a vehicle in an airbag inflation / deflation state according to one embodiment of the present invention;

[0027] Figure 6 A side view of a vehicle in an airbag inflation / deflation state according to an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of flow separation of a front bumper according to an embodiment of the present invention;

[0029] Figure 8 FIG. 4 is a strategy diagram according to an embodiment of the present invention.

[0030] Reference numerals:

[0031] 100 - front bumper; 101 - body; 1011 - second clip; 102 - airbag; 1021 - first clip; 1022 - first air port; 1023 - second air port; 103 - air pump; 1031 - first air terminal; 1032 - second air terminal; 1033 - ventilation port; 1034 - power port; 1035 - control signal port; 104 - wading depth sensor; 105 - speed sensor; 106 - pressure sensor;

[0032] 200-vehicles. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "back," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or relative positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on the present invention. Unless otherwise specified, the above-mentioned directions may be flexibly set in actual application, provided that the relative positional relationships shown in the accompanying drawings are met.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "communicated" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be directly connected, indirectly connected through an intermediary, or internally connected between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0037] In embodiments of the present invention, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, article, or apparatus comprising the element.

[0038] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0039] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0040] During vehicle driving, the front bumper and other styling designs may cause airflow loss, thus failing to meet the vehicle's drag reduction requirements under high-speed driving conditions. For example, the sharp edges and corners of the front bumper (such as the connection between the bumper and the body, the fog lamp area, and the edge of the lower grille) may cause the airflow direction to change suddenly, the local flow velocity to accelerate, the pressure to drop, and cause boundary layer separation. The separated airflow will form a low-pressure vortex area behind the bumper, generating pressure differential resistance (accounting for more than 50% of the total resistance of the vehicle). In addition, with the rapid advancement of technology and the diversification of user needs, some vehicles already have water wading functions. However, the front bumper hardly participates in the vehicle's water wading and cannot contribute to the water wading function. The present application aims to provide a new front bumper structure that realizes a variable surface at the bottom of the front bumper, thereby reducing flow losses, and utilizing the structural design of the front bumper to improve the vehicle's water wading performance.

[0041] Reference below Figures 1-8 The front bumper 100 and the vehicle 200 according to the embodiment of the present invention are described.

[0042] refer to Figure 1 An embodiment of the first aspect of the present invention provides a front bumper 100, comprising: the front bumper 100 comprises: a main body 101, the main body 101 is suitable for being set on a vehicle body; a flexible portion, the flexible portion is arranged at the bottom of the main body 101; the flexible portion has an initial state and a first state, wherein the cross-sectional area of the front bumper 100 in the first state is greater than the cross-sectional area of the front bumper 100 in the initial state.

[0043] Specifically, the front bumper 100 is generally composed of an outer panel (plastic skin), energy-absorbing foam (such as PU polyurethane) and a metal beam. The main body 101 referred to in this application can be an outer panel, which is assembled on the white body; since the shape of the bottom of the front bumper is prone to cause flow separation, thereby increasing resistance, this application sets the flexible part at the bottom of the outer panel, that is, the side of the outer panel facing the ground, and the flexible part is deformable. It should be noted that the flexible part of this application can cover the entire lower surface of the bottom of the main body 101, or cover a part of the lower surface of the bottom of the main body 101, and there is no restriction here; when the flexible part is in the initial state, the flexible part is close to the bottom of the outer panel, and the cross-section of the front bumper 100 is the initial cross-section; when the flexible part is in the first state, the flexible part is deformed, and the flexible part bulges relative to the bottom of the outer panel. The cross-section of the front bumper 100 is the cross-section after the deformation of the flexible part. It can be understood that the cross-section of the front bumper 100 in the first state is larger than the cross-section in the initial state. When the flexible portion is deformed, the shape of the bottom of the front bumper 100 is changed, thereby reducing flow separation and lowering the resistance of the entire vehicle.

[0044] In some embodiments, the flexible portion comprises a rubber that can be stretched or tightened.

[0045] Specifically, the rubber can be a mixture of one or more materials such as butyl rubber, silicone rubber, and thermoplastic elastomer (TPE), exhibiting excellent elasticity and flexibility, and providing a long service life. When the rubber is subjected to external forces, such as by providing a support structure between the rubber and the body 101, the support structure can be a mechanical component with a lifting function, such as a gear rack combination or other conventional mechanical structure. When the support structure lifts the rubber, the cross-section of the front bumper 100 changes, thereby reducing flow separation and lowering vehicle resistance.

[0046] In some embodiments, as Figure 1 、 Figure 3 and Figure 4 As shown, the flexible portion includes a balloon 102 that is inflatable and deflable.

[0047] Specifically, the airbag 102 is made of elastic rubber or plastic. The inflatable and deflable airbag 102 covers the bottom of the body 101. When the airbag 102 is inflated or deflated, the cross-section of the front bumper 100 changes to meet various performance requirements, such as reducing flow separation and overall vehicle drag, and increasing the buoyancy of the vehicle 200 for improved wading performance. When inflated, the airbag 102 rounds the bottom of the body 101 of the front bumper 100, increasing the fillet and reducing flow separation. Operation is simple and quick.

[0048] In some embodiments, the airbag 102 is provided with a first clamping member 1021 , and the body 101 is correspondingly provided with a second clamping member 1011 . The first clamping member 1021 and the second clamping member 1011 can be engaged with each other.

[0049] Specifically, such as Figure 3 and Figure 4 As shown, the edge of the airbag 102 of the present invention is made of a plastic material with a certain hardness. The front bumper 100 is designed with a seam, and the second clip 1011 is a groove formed by the seam design. To allow the airbag 102 to be assembled to the outer panel of the front bumper 100, the present application designs a first clip 1021 with a receiving cavity. The edge of the airbag 102 is snapped into the receiving cavity. Furthermore, the first clip 1021 is snapped into the seam at the bottom of the body 101, thereby enhancing the secure assembly of the airbag 102 to the front bumper 100. No additional mounting structure is required on the front bumper 100; the airbag 102 can be assembled using the existing seam. Furthermore, the side surface of the airbag 102 facing the bottom of the body 101 is adhered to the body 101 to prevent the airbag 102 from falling to the ground when not inflated, further ensuring a stable assembly of the airbag 102 to the front bumper 100.

[0050] In some embodiments, the front bumper 100 also includes an air pump 103, which is arranged on the side of the bottom facing away from the airbag 102. The air pump 103 includes a first gas end 1031, which is connected to the first gas port 1022 of the airbag 102, and the first gas end 1031 is used to transport gas to the inside of the airbag 102; the air pump 103 also includes a second gas end 1032, which is connected to the second gas port 1023 of the airbag 102, and the second gas end 1032 is used to extract the gas inside the airbag 102.

[0051] Specifically, such as Figure 2 As shown, the air pump 103 is disposed on the upper surface of the bottom of the body 101. The first air end 1031 of the air pump 103 is a deflation end connected to the interior of the airbag 102. The air pump 103 inflates the airbag 102 through the first air end 1031. The second air end 1032 of the air pump 103 is a suction end connected to the interior of the airbag 102. The air pump 103 degases the airbag 102 through the second air end 1032. It is understood that the air pump 103 also includes a vent port 1033. The vent port 1033 allows external air to be sucked into the air pump 103 and then transported into the airbag 102 through the first air end 1031. It also allows the gas inside the airbag 102 to be sucked into the air pump 103 and then transported to the atmosphere. The air pump 103 enables the airbag 102 to be quickly and actively inflated and deflated, causing the cross-section of the front bumper 100 to change to meet different property requirements, such as reducing flow separation, lowering vehicle resistance, and increasing the buoyancy of the vehicle 200 to improve water wading performance.

[0052] In some embodiments, the front bumper 100 further includes a sensor. The sensor is disposed on a side of the bottom facing away from the airbag 102 . The sensor includes one or more of a speed sensor 105 , a pressure sensor 106 , and a wading depth sensor 104 .

[0053] Specifically, such as Figure 2 As shown, sensors are mounted on the upper surface of the bottom of the body 101, including a speed sensor 105, a pressure sensor 106, and a wading depth sensor 104. The state of the airbag 102 can be dynamically controlled based on the vehicle 200's speed and external environment (e.g., wading depth). The pressure sensor 106 is used to detect in real time whether the pressure inside the airbag 102 meets the desired level, providing the vehicle 200 with multiple options for drag reduction mode and wading mode.

[0054] According to the vehicle 200 of the embodiment of the present invention, the vehicle 200 includes the controller and the front bumper 100 , and the controller is configured to control the flexible portion to switch between a first state and an initial state.

[0055] Specifically, the front bumper 100 is generally composed of an outer panel (plastic skin), energy-absorbing foam (such as PU polyurethane) and a metal beam. The main body 101 referred to in this application can be an outer panel, which is assembled on the white body; since the shape of the bottom of the front bumper is prone to cause flow separation, thereby increasing resistance, this application sets the flexible part at the bottom of the outer panel, that is, the side of the outer panel facing the ground, and the flexible part is deformable. It should be noted that the flexible part of this application can cover the entire lower surface of the bottom of the main body 101, or cover a part of the lower surface of the bottom of the main body 101, and there is no restriction here; when the flexible part is in the initial state, the flexible part is close to the bottom of the outer panel, and the cross-section of the front bumper 100 is the initial cross-section; when the flexible part is in the first state, the flexible part is deformed, and the flexible part bulges relative to the bottom of the outer panel. The cross-section of the front bumper 100 is the cross-section after the deformation of the flexible part. It can be understood that the cross-section of the front bumper 100 in the first state is larger than the cross-section in the initial state. When the flexible portion is deformed, the shape of the bottom of the front bumper 100 is changed, thereby reducing flow separation and lowering the resistance of the entire vehicle.

[0056] In some embodiments, the controller is configured to control the flexible portion to be in the first state when the wading depth of the vehicle 200 is greater than a first threshold.

[0057] Specifically, such as Figure 8As shown, when the wading depth sensor 104 detects that the current wading depth of the vehicle 200 is greater than any depth of 0.4m-1m, preferably 0.5m, the vehicle 200 turns on the wading and floating mode, and the controller controls the air pump 103 to inflate the airbag 102 until the airbag 102 is filled with gas; it can be understood that in the floating mode, the inflation speed of the air pump 103 is faster, so as to quickly enter the wading and floating mode and avoid the vehicle 200 from sinking.

[0058] In some embodiments, the controller is configured to: when the wading depth of the vehicle 200 is less than or equal to a first threshold value, and the speed of the vehicle 200 is less than or equal to a second threshold value, control the flexible portion to be in the initial state

[0059] Specifically, such as Figure 8 As shown, when the wading depth sensor 104 detects that the current wading depth of the vehicle 200 is less than or equal to any depth of 0.4m-1m, preferably 0.5m, if the vehicle speed is less than or equal to 60km / h, the vehicle 200 is in normal mode, and the gas inside the airbag 102 is released so that the airbag 102 is tightly attached to the lower surface of the bottom of the body 101. At this time, it is determined that the vehicle 200 is in a non-wading condition and a non-high-speed condition, and it is necessary to mobilize the airbag 102 to change the cross-section of the front bumper 100, thereby saving power consumption.

[0060] In some embodiments, the controller is configured to control the flexible portion to be in the first state so that the cross-sectional area of the front bumper 100 is S1 when the wading depth of the vehicle 200 is less than or equal to a first threshold and the speed of the vehicle 200 is greater than a second threshold.

[0061] Specifically, such as Figure 8 As shown, when the wading depth sensor 104 detects that the current wading depth of the vehicle 200 is less than or equal to any depth between 0.4m and 1m, preferably 0.5m, if the vehicle speed is greater than 60km / h, the vehicle 200 is in high-speed mode, and a certain amount of gas, such as gas with a volume of V, needs to be filled into the airbag 102 so that the airbag 102 protrudes from the bottom of the body 101, changing the shape of the bottom, thereby reducing flow separation and reducing the resistance of the entire vehicle.

[0062] In some embodiments, the controller is configured to: when the wading depth of the vehicle 200 is less than or equal to a first threshold and the speed of the vehicle 200 is greater than a second threshold; when it is detected that the acceleration of the vehicle 200 becomes larger, control the flexible portion to be in a first state so that the cross-sectional area of the front bumper 100 is S2, where S2 is greater than S1.

[0063] Specifically, such as Figure 8As shown, when the wading depth sensor 104 detects that the current wading depth of the vehicle 200 is less than or equal to any depth between 0.4m and 1m, preferably 0.5m, and the vehicle speed is greater than 60km / h, in order to achieve adaptive adjustment of the cross-section of the front bumper 100, each time a volume of gas V is filled into the airbag 102, the acceleration of the vehicle 200 is detected by the acceleration sensor 105. It can be understood that the greater the acceleration, the smaller the resistance; therefore, when the volume of gas V is filled into the airbag 102 for the nth time, the nth acceleration is detected, if a n Greater than a n-1 When the volume of gas V is continuously filled into the airbag 102, until a n Less than or equal to a n-1 , indicating that after the nth inflation, the cross section of the front bumper 100 is the optimal cross section for resistance. At this time, the first air end 1031 of the air pump 103 is closed, and the airbag 102 completes inflation, achieving the optimal drag reduction effect.

[0064] It can be understood that the first state is the inflated state of the airbag 102. When the wading depth sensor 104 detects that the current wading depth of the vehicle 200 is less than or equal to any depth of 0.4m-1m, preferably 0.5m, if the vehicle speed is greater than 60km / h, the vehicle 200 is in high-speed mode, and a certain amount of gas needs to be filled into the airbag 102. At this time, the cross-sectional area of the front bumper 100 is S1; when the acceleration becomes larger, it means that the airbag 102 still needs to be inflated, and the controller controls the air pump 103 to continue to inflate the airbag 102. At this time, the cross-sectional area of the front bumper 100 is S2, and S2 is greater than S1.

[0065] In a specific embodiment, Figure 8 As shown, the controller controls the inflation and deflation of the airbag 102, including the following steps:

[0066] Step S01: The wading depth sensor 104 collects the wading depth h, and then proceeds to step S02 for determination;

[0067] Step S02: The controller determines whether the wading depth h exceeds H, where H is 0.5m, as a condition for starting the wading mode. If so, the process proceeds to step S03; if not, the process proceeds to step S08;

[0068] Step S03: The cab display prompts the driver whether to enter the wading rapid inflation mode;

[0069] Step S04: After the driver confirms, proceed to step S05;

[0070] Step S05: the air pump 103 receives a command from the controller to open the first air port 1031 and quickly fills the airbag 102 with gas.

[0071] Step S06: The controller determines whether the airbag 102 is in a fully inflated state. If not, the controller proceeds to step S05 to continue inflating the airbag 102. If so, the controller proceeds to step S07.

[0072] Step S07 : the air pump 103 receives a command from the controller to close the first air port 1031 .

[0073] Step S08: The speed sensor 105 collects the vehicle speed V, and the process goes to step S09 for determination;

[0074] Step S09: The controller determines whether the vehicle speed V is greater than 60 km / h. If so, the process goes to step S10; if not, the process goes to step S13;

[0075] Step S10: The air pump 103 receives a command from the controller to open the first air port 1031 and enters a multiple micro-inflation mode. The air pump 103 fills the airbag 102 with a volume of V (0.2 L) of gas for the nth time and then proceeds to step S11 (n=1, 2, 3, ...);

[0076] Step S11: The controller determines the acceleration a n Is it greater than the previous acceleration a? n-1 Assuming that the driving force of the vehicle 200 remains unchanged, the greater the acceleration, the smaller the resistance encountered by the vehicle 200. Therefore, the magnitude of the acceleration is used as the basis for determining whether to continue to inflate. n Greater than the previous acceleration a n-1 If yes, then go to step S10 and fill the airbag 102 with gas of volume V again; if no, go to step S12;

[0077] Step S12: the air pump 103 receives a command from the controller to close the first air port 1031 , and the airbag 102 completes inflation.

[0078] Step S13: the air pump 103 receives a command from the controller to open the second air port 1032 and extracts the air in the airbag 102;

[0079] Step S14: The controller determines whether there is no gas in the airbag 102. If so, the process proceeds to step S15; if not, the process proceeds to step S13 to continue extracting gas from the airbag 102.

[0080] Step S15: the air pump 103 receives a command from the controller to close the second air port 1032 .

[0081] The present application can dynamically control the state of the airbag 102 according to the driving speed of the vehicle 200 and the wading depth of the vehicle 200, and use the pressure sensor 106 to detect in real time whether the pressure inside the airbag 102 reaches the expected level, providing the vehicle 200 with multiple options of drag reduction mode and wading mode.

[0082] In some embodiments, the vehicle 200 further includes a power source electrically connected to the air pump 103 of the front bumper 100 .

[0083] Specifically, the air pump 103 is provided with a power port 1034, which is electrically connected to the power supply of the vehicle 200 to power the air pump 103, thereby achieving inflation and deflation of the airbag 102. It will be understood that the air pump 103 also includes a control signal port 1035, which is electrically connected to the controller to receive inflation and deflation commands from the controller.

[0084] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses 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 any one or more embodiments or examples.

[0085] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A front bumper (100), characterized in that: The front bumper (100) comprises: A body (101), wherein the body (101) is suitable for being arranged on a vehicle body; A flexible portion is provided at the bottom of the body (101); the flexible portion has an initial state and a first state, wherein the cross-sectional area of the front bumper (100) in the first state is larger than the cross-sectional area of the front bumper (100) in the initial state.

2. The front bumper (100) according to claim 1, characterized in that The flexible portion includes a rubber sheet that can be stretched or contracted.

3. The front bumper (100) according to claim 1, characterized in that: The flexible portion includes an airbag (102), which is inflatable and deflable.

4. The front bumper (100) according to claim 3, characterized in that: The airbag (102) is provided with a first clamping component (1021), and the body (101) is correspondingly provided with a second clamping component (1011), and the first clamping component (1021) and the second clamping component (1011) can be engaged with each other.

5. The front bumper (100) according to claim 3, characterized in that: The front bumper (100) further comprises an air pump (103), which is arranged on a side of the bottom facing away from the airbag (102), and the air pump (103) comprises a first air end (1031), which is connected to a first air port (1022) of the airbag (102), and the first air end (1031) is used to deliver air to the interior of the airbag (102); the air pump (103) further comprises a second air end (1032), which is connected to a second air port (1023) of the airbag (102), and the second air end (1032) is used to extract the air from the interior of the airbag (102).

6. The front bumper (100) according to claim 3, characterized in that: The front bumper (100) further comprises a sensor, which is arranged on a side of the bottom facing away from the airbag (102), and the sensor comprises one or more of a speed sensor (105), a pressure sensor (106) and a wading depth sensor (104).

7. A vehicle (200), characterized in that: The front bumper (100) comprises a controller and any one of claims 1 to 6, wherein the controller is used to control the flexible portion to switch between the first state and the initial state.

8. The vehicle (200) according to claim 7, characterized in that The controller is configured to: When the wading depth of the vehicle (200) is greater than a first threshold, the flexible portion is controlled to be in the first state.

9. The vehicle (200) according to claim 8, characterized in that The controller is configured to: When the wading depth of the vehicle (200) is less than or equal to a first threshold value, and the speed of the vehicle (200) is less than or equal to a second threshold value, the flexible portion is controlled to be in the initial state.

10. The vehicle (200) according to claim 8, characterized in that The controller is configured to: When the wading depth of the vehicle (200) is less than or equal to a first threshold value and the speed of the vehicle (200) is greater than a second threshold value, the flexible portion is controlled to be in the first state so that the cross-sectional area of the front bumper (100) is S1.

11. The vehicle (200) according to claim 10, characterized in that The controller is configured to: When the wading depth of the vehicle (200) is less than or equal to the first threshold, and the speed of the vehicle (200) is greater than the second threshold: When it is detected that the acceleration of the vehicle (200) becomes larger, the flexible portion is controlled to be in the first state, so that the cross-sectional area of the front bumper (100) is S2, wherein S2 is greater than S1.

12. The vehicle (200) according to claim 7, characterized in that The vehicle (200) further comprises a power source electrically connected to the air pump (103) of the front bumper (100).

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