Vehicle bottom structure and vehicle

Abstract

This utility model relates to the field of vehicle technology, and discloses a vehicle bottom structure and a vehicle. The vehicle bottom structure has intersecting first and second directions, and includes a subframe, a subframe bushing, and a bottom guard plate. The subframe bushing is connected to the subframe. The bottom guard plate is connected to the subframe, and the bottom guard plate includes a main body and a guide portion connected to the main body. The guide portion is provided with a guide slope. Along the first direction, the guide slope has a first end close to the subframe bushing and a second end away from the subframe bushing, wherein the first end of the guide slope is higher than the second end of the guide slope, and the first end of the guide slope is correspondingly arranged with the subframe bushing. This utility model can avoid localized temperature accumulation in the subframe bushing, ensuring driving safety.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a vehicle bottom structure and a vehicle. Background Technology

[0002] As a key damping component of the vehicle chassis system, the subframe bushing undertakes the core functions of connecting the subframe to the body, absorbing vibrations, and transmitting loads, directly affecting the vehicle's handling, comfort, and safety. In gasoline and hybrid vehicles, the engine compartment is in a high-heat environment due to engine operation and high-temperature radiation from the exhaust system. The subframe bushing is usually located at the bottom of the engine compartment or in the adjacent area, making it susceptible to the combined effects of hot airflow and heat radiation.

[0003] Current high-temperature protection technologies for subframe bushings are mainly achieved through material optimization and structural design. In terms of engine compartment thermal management, existing technologies mostly rely on setting heat dissipation holes in the underbody protection plate to passively dissipate heat from the engine compartment through the pressure difference between the upper and lower sides of the underbody protection plate, thereby cooling the interior of the engine compartment and protecting the subframe bushings.

[0004] Although existing technologies have alleviated some of the high-temperature problems by setting up heat dissipation structures on the underbody protection plate, passively dissipating the heat from the engine compartment through heat dissipation holes makes it difficult to accurately guide the low-temperature airflow to the subframe bushing area, resulting in local temperature accumulation, which can easily exceed the temperature resistance threshold of the bushing material under extreme operating conditions. Utility Model Content

[0005] This utility model provides a bottom guard plate and a vehicle to solve the problem of subframe bushing failure caused by localized temperature accumulation.

[0006] In a first aspect, this utility model provides a vehicle bottom structure having intersecting first and second directions, including a subframe, a subframe bushing, and a bottom guard plate. The subframe bushing is connected to the subframe. The bottom guard plate is connected to the subframe, and the bottom guard plate includes a body portion and a guide portion connected to the body portion, the guide portion being provided with a guide slope. Along the first direction, the guide slope has a first end near the subframe bushing and a second end away from the subframe bushing, wherein the first end of the guide slope is higher than the second end of the guide slope, and the first end of the guide slope is correspondingly disposed with respect to the subframe bushing.

[0007] Beneficial effects: The active airflow can be guided by the setting of the guide slope. The first end of the guide slope is positioned high in conjunction with the subframe bushing position, which can accurately guide the low-temperature airflow from the second end of the guide slope to the first end to the subframe bushing, thereby reducing the temperature of the subframe bushing and effectively controlling the temperature of the subframe bushing within the material's temperature resistance threshold.

[0008] In one optional embodiment, the guide portion is provided on both sides of the main body portion along the second direction.

[0009] Beneficial effects: By providing guide sections on two opposite sides of the main body along the second direction, the subframe bushings on both sides of the vehicle can be cooled respectively, thereby improving the uniformity of heat dissipation.

[0010] In an optional embodiment, the flow guide portion is further provided with a first connecting segment having a first end and a second end opposite to each other, wherein the first end of the first connecting segment is connected to the first end of the flow guide slope, the second end of the first connecting segment is connected to the body portion, and the first end of the first connecting segment is higher than the second end of the first connecting segment.

[0011] Beneficial effects: The first connecting section connects the guide slope to the main body and supports the guide slope. Specifically, it supports the first end of the guide slope, which is at a relatively high position, thereby ensuring that the airflow passing through the guide slope can flow more stably to the subframe bushing, cool the subframe bushing, and improve the guide efficiency.

[0012] In one optional embodiment, the flow guide portion is further provided with a second connecting segment, which is connected to the first connecting segment and the side of the flow guide slope along the second direction, and the second connecting segment is connected to the main body portion.

[0013] Beneficial effects: The second connecting section can connect the first connecting section and the side of the guide slope, thereby connecting the first connecting section and the guide slope to the main body, strengthening the strength of the guide slope, improving the overall stability, and ensuring that the airflow passing through the guide slope can flow more stably to the position of the subframe bushing, cooling the subframe bushing and improving the flow guiding efficiency.

[0014] In one optional embodiment, a clearance groove is provided at the connection position of the first connecting segment, the second connecting segment and the guide slope, and the subframe is at least partially located within the clearance groove.

[0015] Beneficial effects: The clearance groove allows for clearance at specific locations on the subframe, ensuring that the first end of the guide ramp aligns with the subframe bushing. This ensures that the airflow passing over the guide ramp can more precisely reach the subframe bushing, thus cooling it. Simultaneously, the clearance groove also improves the overall strength of the guide section and enhances its stability during airflow guidance.

[0016] In one optional embodiment, the main body includes a first plate segment, a transition plate segment, and a second plate segment connected sequentially along the first direction. The transition plate segment is bent so that the height of the first plate segment is higher than the height of the second plate segment. An air inlet is provided at one end of the transition plate segment near the first plate segment, and an air outlet is provided at the second plate segment.

[0017] Beneficial effects: The arrangement of the first section, transition section, and second section allows the airflow at the bottom of the underbody to flow sequentially through the first section, transition section, and second section during vehicle operation. The airflow flowing through the first section impacts the transition section and flows into the engine compartment through the air inlet, and then out through the air outlet. This can cool the interior space of the engine compartment, thereby cooling the subframe bushing and improving heat exchange efficiency.

[0018] In one optional embodiment, the bottom protective plate further includes an air guide shroud, which is connected to the main body and covers the air inlet hole to guide airflow to the air inlet hole.

[0019] Beneficial effects: The air guide shroud not only guides the airflow entering from the air inlet and directs the airflow, improving the efficiency of the airflow exiting from the air outlet, but also plays an auxiliary role in guiding the airflow, increasing the flow rate of the airflow entering the air inlet and further improving the heat exchange efficiency.

[0020] In one optional embodiment, a plurality of air outlets are provided, and the plurality of air outlets are spaced apart along the second direction.

[0021] Beneficial effects: The multiple air outlets are spaced apart along the second direction, specifically perpendicular to the airflow direction, which can form a laminar flow air outlet mode, maximizing the heat exchange area and improving heat dissipation efficiency.

[0022] In one optional embodiment, the bottom guard plate further includes reinforcing protrusions disposed on the body portion. The reinforcing protrusions extend along the first direction, and multiple reinforcing protrusions are provided. The multiple reinforcing protrusions are spaced apart along the second direction, and a guide air duct is formed between adjacent reinforcing protrusions.

[0023] Beneficial effects: The reinforced protrusions not only enhance the overall strength of the bottom guard plate, but the airflow channel formed between two adjacent reinforced protrusions extends in the same direction as the airflow, which can also reduce the drag coefficient.

[0024] Secondly, this utility model also provides a carrier, including a carrier bottom structure.

[0025] Beneficial effects: The vehicle bottom structure, mounted on the vehicle, can reduce the temperature in the subframe bushing area and optimize the vehicle's drag coefficient. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the bottom structure of a vehicle according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the flow guide section in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the bottom protective plate in an embodiment of the present invention;

[0030] Figure 4 This is a structural schematic diagram showing the relative positions of the bottom guard plate and the subframe bushing in an embodiment of this utility model;

[0031] Figure 5 This is a schematic diagram of the airflow direction guided by the guide section in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the airflow being guided by the guide section to the subframe bushing in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram showing the airflow direction in the air inlet and air outlet of this utility model embodiment.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Subframe; 2. Subframe bushing; 3. Underbody protection plate; 301. Air guide section; 3011. Air guide ramp; 3012. First connecting section; 3013. Second connecting section; 3014. Clearance groove; 302. Main body; 3021. First plate section; 3022. Transition plate section; 3023. Second plate section; 303. Air inlet; 304. Air outlet; 305. Air guide cover; 306. Reinforcing protrusion; X, First direction; Y, Second direction. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The following is combined Figures 1 to 7 The following describes embodiments of the present invention.

[0038] According to an embodiment of the present invention, a vehicle bottom structure is provided, having intersecting first direction X and second direction Y, including a subframe 1, a subframe bushing 2, and a bottom guard plate 3. The bottom guard plate 3 is connected to the subframe 1, and the subframe 1 is connected to the subframe bushing 2. The bottom guard plate 3 includes a body portion 302 and a guide portion 301 connected to the body portion 302. The guide portion 301 is provided with a guide slope 3011, which can guide the airflow below the bottom guard plate 3 towards the subframe bushing 2. Specifically, along the first direction X, the guide slope 3011 has a first end close to the subframe bushing 2 and a second end away from the subframe bushing 2. The first end of the guide slope 3011 is higher than the second end of the guide slope 3011, and the first end of the guide slope 3011 is correspondingly disposed with respect to the subframe bushing 2.

[0039] First, it should be noted that in this embodiment, the first direction X is the front-to-back direction of the vehicle, and the second direction Y is the left-to-right direction of the vehicle. Of course, those skilled in the art can adjust the specific directions referred to by the first direction X and the second direction Y according to actual needs.

[0040] by Figure 1 or Figure 5 The directions shown are illustrated below. The first end of the aforementioned guide slope 3011 is the right end, and the second end is the left end. The first end of the guide slope 3011 is higher than the second end, meaning the height of the first end of the guide slope 3011 above the ground is greater than the height of the second end. During normal driving of the vehicle along the direction from the second end to the first end of the guide slope 3011, the airflow below the underbody protection plate 3 can flow along the direction from the second end to the first end of the guide slope 3011 across the surface of the guide slope 3011 and flow towards the subframe bushing 2, thereby cooling the subframe bushing 2.

[0041] The "height above the ground" mentioned above refers to the height of a certain structure above the ground when the vehicle bottom structure of this embodiment is assembled on the bottom of the vehicle and the vehicle is placed on flat ground.

[0042] Understandable, such as Figure 4 As shown, the first end of the guide slope 3011 is correspondingly set to the subframe bushing 2, that is, the first end of the guide slope 3011 is flush with the platform surface at the bushing groove of the subframe 1, which allows the airflow from the first end of the guide slope 3011 to flow precisely to the subframe bushing 2, carrying the heat of the subframe bushing 2 away from the external environment, that is, reducing the temperature of the subframe bushing 2.

[0043] Optionally, the guide slope 3011 can be set as a plane, that is, the area between the first end and the second end of the guide slope 3011 is set as a plane.

[0044] Optionally, the guide slope 3011 can also be configured as an arc-shaped surface, that is, the height of the guide slope 3011 gradually increases from the second end to the first end.

[0045] In this embodiment, as Figure 6 As shown, the active airflow guidance can be achieved by setting the guide slope 3011. The first end of the guide slope 3011 is located at the subframe bushing 2. The low-temperature airflow from the second end to the first end of the guide slope 3011 can be accurately guided to the subframe bushing 2, thereby reducing the temperature at the subframe bushing 2 and effectively controlling the temperature of the subframe bushing 2 within the material temperature resistance threshold.

[0046] In one embodiment, the main body 302 is provided with guide portions 301 on both sides along the second direction Y.

[0047] Optionally, the guide portions 301 located on both sides of the main body 302 along the second direction Y are symmetrically arranged, and the plane of symmetry is parallel to the first direction X, and can be respectively arranged in correspondence with the subframe bushings 2 on both sides of the vehicle along the second direction Y.

[0048] In this embodiment, by providing guide sections 301 on two opposite sides of the main body 302 along the second direction Y, the subframe bushings 2 on both sides of the vehicle can be cooled respectively, thereby improving the uniformity of heat dissipation.

[0049] In one embodiment, such as Figure 2 As shown, the flow guide 301 is also provided with a first connecting section 3012. The first connecting section 3012 has a first end and a second end opposite to each other. The first end of the first connecting section 3012 is connected to the first end of the flow guide slope 3011, and the second end of the first connecting section 3012 is connected to the main body 302. The first end of the first connecting section 3012 is higher than the second end of the first connecting section 3012.

[0050] by Figure 1 or Figure 5To illustrate the directions shown, the first end of the first connecting segment 3012 is the left end, and the second end of the first connecting segment 3012 is the right end.

[0051] It should be noted that the first connecting section 3012 serves as a support structure for the guide slope 3011, connecting the guide slope 3011 to the main body 302 and providing support for the guide slope 3011. The fact that the first end of the first connecting section 3012 is higher than the second end of the first connecting section 3012 prevents it from affecting the guide slope 3011's effect on directing airflow to the subframe bushing 2, ensuring that the airflow passing through the guide slope 3011 can exit from the first end of the guide slope 3011 and cool the subframe bushing 2.

[0052] from Figure 3 As can be seen, the guide slope 3011 and the first connecting section 3012 form a triangular structure with the pointed corners pointing upwards.

[0053] Optionally, the first connecting section 3012 can be configured as an inclined surface or as a vertical surface perpendicular to the ground, as long as it can serve the purpose of connecting the guide inclined surface 3011 and the main body 302.

[0054] Optionally, when the first connecting segment 3012 is set as an inclined surface, the first connecting segment 3012 can be set as an arc-shaped plate structure, that is, the height of the first connecting segment 3012 gradually decreases from the first end to the second end, and the first connecting segment 3012 can also be set as an arc-shaped surface.

[0055] Optionally, the first connecting segment 3012 can be configured as a horizontal plate structure, that is, the first end to the second end of the first connecting segment 3012 is configured as a horizontal plane.

[0056] In this embodiment, the first connecting section 3012 connects the guide slope 3011 to the main body 302 and supports the guide slope 3011. Specifically, it supports the first end of the guide slope 3011, which is at a relatively higher position, thereby ensuring that the airflow passing through the guide slope 3011 can flow more stably to the position of the subframe bushing 2, cool the subframe bushing 2, and improve the flow guiding efficiency.

[0057] In one embodiment, such as Figure 2 As shown, the flow guide 301 is also provided with a second connecting section 3013, which is connected to the side of the first connecting section 3012 and the flow guide slope 3011 along the second direction Y, and the second connecting section 3013 is connected to the main body 302.

[0058] It should be noted that the second connecting section 3013 is also a support structure for the guide slope 3011, which can realize the connection between the guide slope 3011 and the first connecting section 3012 and the main body 302, and can support the guide slope 3011, thereby increasing the structural strength of the guide part 301.

[0059] Optionally, the second connecting section 3013 can be configured as an inclined surface or as a vertical surface perpendicular to the ground, so as to serve the purpose of connecting the guide inclined surface 3011, the first connecting section 3012, and the main body 302.

[0060] In this embodiment, the second connecting segment 3013 is connected to the inner side of the guide slope 3011 and the first connecting segment 3012 facing the main body 302. Of course, it can also be connected to the outer side of the guide slope 3011 and the first connecting segment 3012 away from the main body 302.

[0061] In this embodiment, the second connecting section 3013 can connect the first connecting section 3012 and the side of the guide slope 3011, thereby connecting the first connecting section 3012 and the guide slope 3011 and connecting the first connecting section 3012 and the guide slope 3011 to the main body 302. This strengthens the guide slope 3011, improves the overall stability, and ensures that the airflow passing through the guide slope 3011 can flow more stably to the position of the subframe bushing 2, thereby cooling the subframe bushing 2 and improving the flow guiding efficiency.

[0062] In one embodiment, the body portion 302 and the guide portion 301 are constructed as an integral structure, specifically an integral casting structure.

[0063] It should be noted that the airflow guide 301 protrudes along the second direction Y and is disposed with the main body 302. This can prevent the airflow flowing out of the air outlet 304 from being re-guided to the subframe bushing 2 position through the airflow guide slope 3011. Instead, it introduces the external cooling airflow of the vehicle to the bushing position of the subframe 1 to ensure the cooling effect.

[0064] Optionally, the flow guide 301 may also be configured as a welded part located on the side of the body part 302.

[0065] In one embodiment, such as Figure 2 As shown, a clearance groove 3014 is provided at the connection position of the first connecting section 3012, the second connecting section 3013 and the guide slope 3011, and the subframe 1 is at least partially located in the clearance groove 3014.

[0066] It should be noted that the clearance groove 3014 is a recessed structure opposite to the subframe 1 at the connection position of the first connecting section 3012, the second connecting section 3013 and the guide slope 3011. It is an integral structure with the first connecting section 3012, the second connecting section 3013 and the guide slope 3011, so that the first end of the guide slope 3011 can avoid the subframe 1 after reaching the bottom protection position of the subframe 1, and continue to extend upward until it is flush with the platform surface at the bushing groove of the subframe 1, shortening the distance between the first end of the guide slope 3011 and the subframe bushing 2, and improving the cooling effect.

[0067] In this embodiment, the clearance groove 3014 can avoid certain parts of the subframe 1, thereby ensuring that the first end of the guide slope 3011 corresponds to the subframe bushing 2. This ensures that the airflow passing through the guide slope 3011 can flow more accurately to the position of the subframe bushing 2, thus cooling the subframe bushing 2. At the same time, the clearance groove 3014 can also improve the overall strength of the guide section 301 and improve the stability of the guide section 301 in guiding the airflow.

[0068] In one embodiment, such as Figure 3 As shown, the main body 302 includes a first plate segment 3021, a transition plate segment 3022 and a second plate segment 3023 connected sequentially along the first direction X. The transition plate segment 3022 is bent so that the height of the first plate segment 3021 is higher than the height of the second plate segment 3023. An air inlet 303 is provided at one end of the transition plate segment 3022 near the first plate segment 3021, and an air outlet 304 is provided at the second plate segment 3023.

[0069] exist Figure 3 In the diagram, four dashed lines divide the main body 302 into three parts, namely the first plate segment 3021, the transition plate segment 3022, and the second plate segment 3023, as described above.

[0070] The air inlet 303 refers to the airflow that can enter the upper surface of the main body 302 through the air inlet 303 during vehicle operation. The air outlet 304 refers to the airflow that can flow out of the upper surface of the main body 302 through the air outlet 304 during vehicle operation.

[0071] It should be noted that the height of the first plate segment 3021 is higher than the height of the second plate segment 3023, that is, the height of the first plate segment 3021 from the ground is higher than the height of the second plate segment 3023 from the ground. This allows the airflow passing under the first plate segment 3021 to impact the transition plate segment 3022. By setting the air inlet 303 at the end of the transition plate segment 3022 close to the first plate segment 3021, the airflow impacting the transition plate segment 3022 can enter the air inlet 303, thereby enabling the airflow to enter the cabin from the air inlet 303.

[0072] In this embodiment, the air inlet 303 can be located at the junction of the transition plate segment 3022 and the first plate segment 3021, or it can be located on the bent portion of the transition plate segment 3022.

[0073] Understandably, the air vent 304 allows for temperature exchange between the hot airflow inside the vehicle's cabin and the cooling airflow outside the cabin, reducing the temperature of components inside the cabin and improving the vehicle's driving safety.

[0074] Optionally, the transition section at least at the connection position with the first plate section 3021 is set as an inclined structure to ensure that the airflow passing under the first plate section 3021 can impact the transition plate section 3022.

[0075] In this embodiment, the arrangement of the first plate segment 3021, the transition plate segment 3022, and the second plate segment 3023 allows the airflow at the bottom of the underbody 3 to flow sequentially through the first plate segment 3021, the transition plate segment 3022, and the second plate segment 3023 during the vehicle's operation. The airflow flowing through the first plate segment 3021 impacts the transition section and flows into the engine compartment through the air inlet 303, and then flows out through the air outlet 304. This can cool the interior space of the engine compartment, thereby cooling the subframe bushing 2 and improving heat exchange efficiency.

[0076] In one embodiment, such as Figure 7 As shown, the bottom protective plate 3 also includes an air guide shroud 305, which is connected to the main body 302 and covers the air inlet 303 to guide the airflow to the air inlet 303.

[0077] Optionally, the air guide 305 can be installed on the side of the bottom guard plate 3 facing the subframe 1. The air guide 305 protrudes in the direction towards the subframe 1 and has an opening facing the subframe bushing 2, which can guide the airflow entering the engine compartment.

[0078] Optionally, the air guide 305 can be disposed on the side of the bottom guard plate 3 away from the subframe 1. The air guide 305 can protrude in the direction away from the subframe 1. The air guide 305 is provided with an opening, the opening direction of which is set towards the first plate segment 3021, which can assist the air inlet 303 in collecting airflow.

[0079] In this embodiment, the air guide shroud 305 not only guides the airflow entering from the air inlet 303 and directs the airflow, thus improving the efficiency of the airflow exiting from the air outlet 304, but also plays an auxiliary role in guiding the airflow, increasing the flow rate of the airflow entering the air inlet 303 and further improving the heat exchange efficiency.

[0080] In one embodiment, multiple air outlets 304 are provided, and the multiple air outlets 304 are distributed at intervals along the second direction Y.

[0081] Optionally, multiple air outlets 304 can also be spaced apart on the second plate segment 3023 along the first direction X and the second direction Y, respectively, to further increase the heat exchange area.

[0082] Optionally, the air outlet 304 can extend along the second direction Y to increase its length along the second direction Y and improve heat exchange efficiency.

[0083] In this embodiment, multiple air outlets 304 are distributed at intervals along the second direction Y, which is perpendicular to the airflow direction, thus forming a laminar flow air outlet mode, maximizing the heat exchange area and improving heat dissipation efficiency.

[0084] In one embodiment, the number, arrangement, and specific quantity of air inlets 303 and air outlets 304 can be adapted by those skilled in the art according to actual cooling and heat dissipation requirements.

[0085] In one embodiment, such as Figure 1 As shown, the bottom guard plate 3 also includes reinforcing protrusions 306, which are disposed on the body part 302. The reinforcing protrusions 306 extend along the first direction X. Multiple reinforcing protrusions 306 are provided. The multiple reinforcing protrusions 306 are distributed at intervals along the second direction Y, and a guide air duct is formed between adjacent reinforcing protrusions 306.

[0086] It should be noted that the first plate segment 3021, the transition plate segment 3022 and the second plate segment 3023 are all provided with reinforcing protrusions 306, and the reinforcing protrusions 306 are designed to be disassembled to avoid the air outlet 304 and are configured as a segmented structure along the first direction X.

[0087] Understandably, the underbody protection plate 3 is also provided with a raised structure for connecting with the subframe 1, and a through hole structure for reducing the overall weight. The reinforcing protrusion 306 can also be disconnected and set as a segmented structure along the first direction X to avoid the raised structure and the through hole structure.

[0088] Optionally, the reinforcing protrusion 306 may protrude in the direction toward the subframe 1.

[0089] Optionally, the reinforcing protrusion 306 may also protrude in a direction away from the subframe 1.

[0090] In this embodiment, the reinforcing protrusion 306 not only enhances the overall strength of the bottom protective plate 3, but also reduces the drag coefficient because the extension direction of the airflow duct formed between two adjacent reinforcing protrusions 306 is the same as the airflow direction.

[0091] According to an embodiment of the present invention, another aspect provides a carrier, including a carrier bottom structure.

[0092] Alternatively, the vehicle can be a new energy electric vehicle, a fuel-powered vehicle, or a low-altitude aircraft.

[0093] In this embodiment, the vehicle bottom structure is mounted on the vehicle, which can reduce the temperature in the subframe bushing 2 area and optimize the vehicle's drag coefficient.

[0094] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A vehicle bottom structure, characterized in that, Having intersecting first direction (X) and second direction (Y), including: Subframe (1); Subframe bushing (2) is connected to the subframe (1); The bottom guard plate (3) is connected to the subframe (1). The bottom guard plate (3) includes a main body (302) and a guide part (301) connected to the main body (302). The guide part (301) is provided with a guide slope (3011). Along the first direction (X), the guide slope (3011) has a first end close to the subframe bushing (2) and a second end away from the subframe bushing (2), wherein the first end of the guide slope (3011) is higher than the second end of the guide slope (3011), and the first end of the guide slope (3011) is correspondingly arranged with the subframe bushing (2).

2. The vehicle bottom structure according to claim 1, characterized in that, The main body (302) is provided with the flow guide (301) on both sides along the second direction (Y).

3. The vehicle bottom structure according to claim 1, characterized in that, The flow guide (301) is also provided with: A first connecting segment (3012) has a first end and a second end opposite to each other, wherein the first end of the first connecting segment (3012) is connected to the first end of the guide slope (3011), the second end of the first connecting segment (3012) is connected to the body part (302), and the first end of the first connecting segment (3012) is higher than the second end of the first connecting segment (3012).

4. The vehicle bottom structure according to claim 3, characterized in that, The flow guide (301) is also provided with: The second connecting section (3013) is connected to the first connecting section (3012) and the side of the guide slope (3011) along the second direction (Y), and the second connecting section (3013) is connected to the main body (302).

5. The vehicle bottom structure according to claim 4, characterized in that, The connection positions of the first connecting section (3012), the second connecting section (3013) and the guide slope (3011) are provided with clearance grooves (3014), and the subframe (1) is at least partially located in the clearance grooves (3014).

6. The vehicle bottom structure according to claim 1, characterized in that, The main body (302) includes a first plate segment (3021), a transition plate segment (3022), and a second plate segment (3023) connected sequentially along the first direction (X). The transition plate segment (3022) is bent so that the height of the first plate segment (3021) is higher than the height of the second plate segment (3023). An air inlet (303) is provided at the end of the transition plate segment (3022) near the first plate segment (3021), and an air outlet (304) is provided at the second plate segment (3023).

7. The vehicle bottom structure according to claim 6, characterized in that, The bottom protective plate (3) also includes: An air guide shroud (305) is connected to the main body (302) and covers the air inlet (303) to guide airflow to the air inlet (303).

8. The vehicle bottom structure according to claim 6, characterized in that, Multiple air outlets (304) are provided, and the multiple air outlets (304) are distributed at intervals along the second direction (Y).

9. The vehicle bottom structure according to claim 1, characterized in that, The bottom protective plate (3) also includes: A reinforcing protrusion (306) is provided on the body portion (302), and the reinforcing protrusion (306) extends along the first direction (X); The reinforcing protrusions (306) are provided in multiples, and the multiple reinforcing protrusions (306) are distributed at intervals along the second direction (Y), and a guide air duct is formed between adjacent reinforcing protrusions (306).

10. A vehicle, characterized in that, include: The vehicle bottom structure according to any one of claims 1 to 9.

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