Rear auxiliary frame capable of reducing automobile wind resistance and automobile

Abstract

The utility model belongs to the field of automobiles, and particularly relates to a rear auxiliary frame for reducing automobile wind resistance and an automobile, the rear auxiliary frame comprises a frame body, and a wind resistance component is arranged at the bottom of the frame body; a protection frame is detachably arranged in front of the wind resistance component in the flow direction of air flow generated by operation of the frame body, a slope-shaped flow guide face is arranged in front of the protection frame, the inclination angle of the slope-shaped flow guide face is smaller than 60 degrees, an area A used for reducing wind resistance is formed by the flow guide face and the frame body, and the wind resistance component is contained in the area A. The wind resistance component breaks through the conventional thinking, and the wind resistance component is arranged in the area A; from the position of a chassis of an automobile frame, wind resistance is reduced, a slope-shaped flow guide face is included in the front of the protection frame, the inclined angle is smaller than 60 degrees, and at the moment, the flow guide face and a frame body can form a good area used for reducing the wind resistance, and wind resistance is conducted on an oil tank and a suspension.

Description

Technical Field

[0001] The utility model belongs to the field of automobiles, and particularly relates to a rear auxiliary frame for reducing automobile wind resistance and an automobile. Background Art

[0002] With the country's attention to reducing automobile fuel consumption and the rising oil prices, fuel economy has become a key consideration when people choose vehicles. Wind resistance accounts for more than 30% of the vehicle's fuel consumption when driving at high speeds, so reducing wind resistance can significantly improve fuel consumption, increase fuel economy, and increase customer satisfaction.

[0003] The wind resistance of a car mainly depends on its appearance, including the visible area on the top of the car and the invisible areas such as the chassis at the bottom of the car. The main means to reduce wind resistance is to change the visible areas such as the shape. However, the shape is also a key factor that users pay attention to when buying a car. Changing the shape for the sake of wind resistance is often not feasible. Therefore, reducing wind resistance from the invisible areas such as the chassis is also a very worthy research area.

[0004] After research, it is found that the main wind resistance area under the chassis is the windward surface of components such as the suspension and fuel tank. Therefore, it is a question worth considering for those skilled in the art to reduce wind resistance as much as possible without affecting the appearance of the car. Utility Model Content

[0005] In view of the above problems, the utility model proposes a rear sub-frame for reducing the wind resistance of an automobile, comprising a frame body, wherein a wind resistance component is arranged at the bottom of the frame body;

[0006] Along the flow direction of the airflow generated by the operation of the frame body, a guard frame is detachably arranged in front of the wind resistance component, and a sloped guide surface is provided in front of the guard frame with an inclination angle less than 60°. The guide surface and the frame body form an area A for reducing wind resistance, and the wind resistance component is accommodated in the area A.

[0007] Preferably, the guard frame is a thin plate structure with a trapezoidal cross section, including a guide plate and a support plate constituting a trapezoidal surface, and a platform surface at the top;

[0008] With the front direction of the frame body as the front, the deflector is located in the front, and the front plate surface of the deflector is the deflector surface, and the angle between the deflector and the frame body is greater than 120°.

[0009] Preferably, the included angle between the support plate and the frame body is 70° to 90°, and the rear surface of the support plate is the leeward side.

[0010] Preferably, the guide plate and the support plate both extend outward to form a mounting plate, and the mounting plate is flush with the surface of the frame body and is fixed by fasteners.

[0011] Preferably, step surfaces are formed on the mounting plates near the two sides of the frame body, and the step surfaces are in contact with the corners of the longitudinal beams of the frame body.

[0012] Preferably, the fastener is a screw, a mounting hole is arranged on the mounting plate, the screw passes through the mounting hole and is threadedly fixed on the frame body.

[0013] Preferably, there are four fasteners, which are disposed at four corners of the guard frame mounting plate.

[0014] Preferably, reinforcing ribs for increasing strength are arranged between the guide plate and the support plate.

[0015] Preferably, there are two guard frames, which are respectively disposed on two sides of the bottom surface of the frame body, and jointly protect the wind resistance component.

[0016] Preferably, the wind resistance component includes a fuel tank and a suspension, and the fuel tank and the suspension are arranged at the bottom of the frame body.

[0017] The present application also claims protection for a car with reduced wind resistance, characterized in that it is suitable for a rear subframe to reduce wind resistance.

[0018] Beneficial Effects

[0019] 1. The utility model breaks the conventional thinking and starts from the chassis of the automobile frame to reduce the wind resistance, including the sloped guide surface in front of the guard frame, and the slope angle is less than 60°. At this time, the guide surface and the frame body can form a better area for reducing wind resistance, and block the wind for the fuel tank and the suspension.

[0020] 2. Furthermore, the guard frame is a thin plate structure with a trapezoidal cross-section, including a guide plate and a support plate constituting the ladder surface, and a platform surface on the top. The smooth plate surface structure can play a good guiding role in the wind direction. Not only that, the angle between the support plate and the frame body is 70° to 90°, which can not only play a good supporting role, but also prevent leeward wind, which really kills two birds with one stone.

[0021] 3. In fact, according to different frame bodies, the shape of the mounting plate can be changed for adaptive adjustment. In this way, not only is the structure more compact, but the frame connection is also more stable.

[0022] 4. In fact, in addition to screws, all fasteners available on the market can be used as connectors for this application, so it is more practical and convenient. There are four fasteners, which just fix the four corners of the guard frame, making it more stable.

[0023] 5. Furthermore, reinforcing ribs are arranged inside the guard frame. The guard frame itself is an integrally formed thin plate, so adding reinforcing ribs can greatly improve its strength.

[0024] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of a rear subframe for reducing wind resistance of an automobile in an embodiment of the utility model is shown;

[0027] Figure 2 A schematic diagram of a protective frame in an embodiment of the utility model is shown;

[0028] Figure 3 A schematic diagram of the connection between the guard frame and the frame body in an embodiment of the utility model is shown.

[0029] In the figure,

[0030] 1. Frame body; 1a. Longitudinal beam;

[0031] 2. Wind resistance components; 21. Fuel tank; 22. Suspension;

[0032] 3. Guard frame;

[0033] 3a, guide plate; 31a, guide surface;

[0034] 3b, platform surface; 3c, support plate;

[0035] 3d, mounting plate; 31d, step surface;

[0036] 3e, reinforcing ribs;

[0037] 4. Fasteners. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] refer to Figure 1 , Figure 1 A schematic diagram of a rear subframe for reducing wind resistance of an automobile in an embodiment of the utility model is shown;

[0040] A rear sub-frame and a car for reducing the wind resistance of a car, comprising a frame body 1, on which a wind resistance component 2 is mounted;

[0041] Along the flow direction of the airflow generated by the operation of the frame body 1, a guard frame 3 is detachably arranged in front of the wind resistance component 2, and a sloped guide surface 31a is provided in front of the guard frame 3, and the inclination angle is less than 60°. The guide surface 31a and the frame body 1 form an area A for reducing wind resistance, and the wind resistance component 2 is accommodated in the area A.

[0042] The utility model breaks the conventional thinking and starts from the chassis of the automobile frame to reduce the wind resistance, including a sloped guide surface 31a in front of the guard frame 3, and the slope angle is less than 60°. At this time, the guide surface 31a and the frame body 1 can form a better area A for reducing wind resistance, and block the oil tank 21 and the suspension 22.

[0043] The guard frame 3 is a thin plate structure with a trapezoidal cross section, including a guide plate 3a and a support plate 3c constituting the ladder surface, and a platform surface 3b at the top;

[0044] refer to Figure 2 , Figure 2 A schematic diagram of a protective frame in an embodiment of the utility model is shown;

[0045] With the front direction of the frame body 1 as the front, the deflector 3a is located in the front, and the front plate surface of the deflector 3a is the deflector surface 31a, the angle between the deflector 3a and the frame body 1 is greater than 120°, the angle between the support plate 3c and the frame body 1 is 70°~90°, and the rear plate surface of the support plate 3c is the leeward side.

[0046] Furthermore, the guard frame 3 is a thin plate structure with a trapezoidal cross-section, including a guide plate 3a and a support plate 3c constituting the ladder surface, and a platform surface 3b on the top. The smooth plate surface structure can play a good guiding role in the wind direction. Moreover, the angle between the support plate 3c and the frame body 1 is 70° to 90°, which can not only play a good supporting role, but also prevent leeward wind, which really kills two birds with one stone.

[0047] refer to Figure 3 , Figure 3 A schematic diagram showing the connection between the guard frame and the frame body in the embodiment of the utility model is shown;

[0048] The guide plate 3a and the support plate 3c both extend outward to form a mounting plate 3d, which is flush with the surface of the frame body 1 and fixed by fasteners 4. A step surface 31d is formed on the mounting plate 3d near both sides of the frame body 1, and the step surface 31d is in contact with the corner of the longitudinal beam 1a of the frame body 1.

[0049] In fact, according to different frame bodies 1, the shape of the mounting plate 3d can be changed to make adaptive adjustments, thereby not only making the structure more compact, but also making the connection of the guard frame 3 more stable.

[0050] The fastener 4 is a screw, and a mounting hole 31d is arranged on the mounting plate 3d. The screw passes through the mounting hole 31d and is threadedly fixed on the frame body 1. There are four fasteners 4, which are respectively placed at the four corners of the mounting plate 3d of the guard frame 3.

[0051] In fact, in addition to screws, all fasteners 4 available on the market can be used as connectors for the present application, so the practicability and convenience are also better. There are four fasteners 4, which just fix the four corners of the guard frame 3, making it more stable.

[0052] Reinforcing ribs 3e are arranged between the guide plate 3a and the support plate 3c to increase the strength.

[0053] Reinforcement ribs 3e are arranged inside the guard frame 3. The guard frame 3 itself is an integrally formed thin plate, so adding the reinforcement ribs 3e can greatly improve its strength.

[0054] There are two guard frames 3 , which are respectively disposed on two sides of the bottom surface of the frame body 1 , and jointly protect the wind resistance component 2 .

[0055] The number and position of the guard frames 3 can be adaptively adjusted according to the size and position of the wind resistance component 2 .

[0056] The present application also claims to protect a car with reduced wind resistance, and the rear subframe of the present application is used to reduce the wind resistance.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rear subframe for reducing the wind resistance of an automobile, characterized in that: It comprises a frame body (1), wherein a wind resistance component (2) is arranged at the bottom of the frame body (1); Along the direction of airflow generated by the operation of the vehicle frame body (1), a guard frame (3) is detachably arranged in front of the wind resistance component (2), a sloped flow guide surface (31a) is provided in front of the guard frame (3), and the inclination angle is less than 60 degrees. The flow guide surface (31a) and the vehicle frame body (1) form an area A for reducing wind resistance, and the wind resistance component (2) is accommodated in the area A.

2. A rear subframe for reducing automobile wind resistance according to claim 1, characterized in that: The guard frame (3) is a thin plate structure with a trapezoidal cross section, comprising a guide plate (3a) and a support plate (3c) constituting a trapezoidal surface, and a platform surface (3b) at the top; With the front direction of the vehicle frame body (1) as the front, the deflector (3a) is located in the front, and the front plate surface of the deflector (3a) is the deflector surface (31a), and the angle between the deflector (3a) and the vehicle frame body (1) is greater than 120 degrees.

3. A rear subframe for reducing automobile wind resistance according to claim 2, characterized in that: The included angle between the support plate (3c) and the frame body (1) is 70° to 90°, and the rear surface of the support plate (3c) is the leeward side.

4. A rear subframe for reducing automobile wind resistance according to claim 3, characterized in that: The guide plate (3a) and the support plate (3c) both extend outward to form a mounting plate (3d); the mounting plate (3d) is flush with the surface of the vehicle frame body (1) and is fixed by a fastener (4).

5. A rear subframe for reducing automobile wind resistance according to claim 4, characterized in that: A step surface (31d) is formed on the mounting plate (3d) close to both sides of the frame body (1), and the step surface (31d) fits in with the corner of the longitudinal beam (1a) of the frame body (1).

6. A rear subframe for reducing automobile wind resistance according to claim 4, characterized in that: The fastener (4) is a screw, a mounting hole is arranged on the mounting plate (3d), the screw passes through the mounting hole and is threadedly fixed on the frame body (1).

7. A rear subframe for reducing automobile wind resistance according to claim 6, characterized in that: There are four fasteners (4), which are respectively disposed at four corners of the mounting plate (3d) of the guard frame (3).

8. The rear subframe for reducing automobile wind resistance according to claim 4, characterized in that: Reinforcing ribs (3e) for increasing strength are arranged between the guide plate (3a) and the support plate (3c).

9. A rear subframe for reducing automobile wind resistance according to claim 8, characterized in that: There are two guard frames (3), which are respectively arranged on both sides of the bottom surface of the frame body (1) and jointly protect the wind resistance component (2).

10. A rear subframe for reducing automobile wind resistance according to claim 9, characterized in that: The wind resistance component (2) comprises an oil tank (21) and a suspension (22), and the oil tank (21) and the suspension (22) are arranged at the bottom of the frame body (1).

11. A car with reduced wind resistance, characterized in that: Use any one of the rear subframes described in 1 to 9 to reduce wind resistance.

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