Air-inlet grille and automobile
By arranging a connecting rod assembly and a rotating connection structure of the wind deflector in the air intake grille, the problem of poor blade stability is solved, the stable closing and opening of the wind deflector is achieved, and the aerodynamic performance and durability of the rotating drive are improved.
Patent Information
- Application Number
- CN202423040212.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-10
AI Technical Summary
The blades of the existing air intake grille have poor stability and are prone to bending when the wind is strong, resulting in an unsatisfactory closing effect and allowing wind energy to enter the engine compartment through the gaps.
A windshield assembly in the grille frame is used, including a connecting rod assembly and a windshield. The windshield is driven by a rotating drive to move between the closed and open positions through the rotational connection of the active connecting rod and the driven connecting rod. The windshield is supported by the connecting rod assembly to ensure stability.
The wind deflector has been improved in terms of stability, ensuring that no air can escape in the closed position, thus enhancing the aerodynamic effect, reducing the loss and wear of the rotary drive and extending its service life.
Smart Images
Figure CN223466996U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of automobile body accessories, in particular to an air inlet grille and a car. BACKGROUND
[0002] The air inlet grille is a body accessory installed on the front of the car. When the engine needs a large amount of air, the air inlet grille is opened to ensure that enough air enters the engine compartment, thereby meeting the normal operation requirements of the engine. When the car needs to run at high speed, the air inlet grille is closed to reduce the air resistance of the car and improve the aerodynamic effect of the car.
[0003] Generally, the air inlet grille is provided with a plurality of transverse crossbars in the vertical direction, and blades are arranged on the crossbars. When the air inlet grille needs to be closed, the crossbars are rotated to make the blades perpendicular to the horizontal plane, thereby completely blocking the flow-through opening of the air inlet grille. When the air inlet grille needs to be opened, the crossbars are rotated to make the blades parallel to the horizontal plane, thereby opening the flow-through opening to achieve the effect of closing and opening the air inlet grille at the appropriate time. In the structure of the air inlet grille, the stability of the blades is poor. Specifically, when the wind is strong, the blades are easily bent backward after bearing the wind force, and the wind can enter the engine compartment through the gap, resulting in unsatisfactory closing effect. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing an air inlet grille and a car to solve the technical problem of poor stability of the blades of the general air inlet grille, specifically, when the wind is strong, the blades are easily bent backward after bearing the wind force, and the wind can enter the engine compartment through the gap, resulting in unsatisfactory closing effect.
[0005] In order to achieve the above-mentioned purpose, the utility model provides an air inlet grille, which comprises a grille frame, a wind blocking assembly and a rotary driver.
[0006] The grille frame is provided with an air inlet channel, the front side of the grille frame is provided with a flow-through opening connected to the air inlet channel, the wind blocking assembly is arranged in the air inlet channel, the wind blocking assembly comprises a connecting rod assembly and a wind blocking plate, the connecting rod assembly comprises a driving connecting rod and a driven connecting rod, the driving connecting rod is rotationally connected to the grille frame and the wind blocking plate, the driven connecting rod is rotationally connected to the grille frame and the wind blocking plate, the rotary driver is installed on the grille frame, the power output end of the rotary driver is connected to the driving connecting rod for driving the driving connecting rod to rotate, and a limiting portion is arranged along the inner wall surface of the air inlet channel.
[0007] The rotation of the active connecting rod can drive the wind shield to move between the closed position and the open position. When the wind shield is in the closed position, the wind shield covers the flow-through opening, and the driven connecting rod abuts against the limiting portion to limit the movement of the wind shield. When the wind shield is in the open position, the wind shield opens the flow-through opening. The wind shield is supported by the active connecting rod and the driven connecting rod which are rotationally connected to the two sides of the wind shield. The stability of the wind shield is good, and the wind shield can ensure that no wind passes through the wind shield in the case of shielding the flow-through opening.
[0008] Optionally, the back surface of the wind shield is provided with a first hinge portion and a second hinge portion. The first hinge portion and the second hinge portion are respectively arranged on opposite sides of the wind shield. One end of the active connecting rod is rotationally connected to the grille frame, and the other end is rotationally connected to the first hinge portion. One end of the driven connecting rod is rotationally connected to the second hinge portion, and the other end is rotationally connected to the grille frame. In this way, the active connecting rod and the driven connecting rod can rotate smoothly, and the wind shield can be smoothly moved to the open position and the closed position.
[0009] Optionally, the rotation driver is located at one end of the wind shield in the length direction, so as to prevent the rotation driver from interfering with the air flow in the air inlet channel and to ensure the compactness of the air inlet grille structure to a certain extent.
[0010] Optionally, the air inlet channel is further provided with a cover plate which is detachably connected to the grille frame and covers the rotation driver, so as to reduce the difficulty and frequency of maintenance of the rotation driver and facilitate the maintenance of the rotation driver.
[0011] Optionally, the wind shield extends transversely in the first direction. The end of the active connecting rod connected to the grille frame is located above the end of the driven connecting rod connected to the grille frame.
[0012] When the wind shield is in the open position, the wind shield is located above the active connecting rod and the driven connecting rod, and the active connecting rod and the driven connecting rod support the wind shield to limit the movement of the wind shield. In this way, the wind shield can maintain a fixed posture by the mechanical structure when the wind shield is in the closed position and the open position, and the rotation driver does not need to output power when the wind shield is in the two positions, so as to reduce the loss of the rotation driver and increase the durability and service life of the rotation driver.
[0013] Optionally, the surface of the driven connecting rod relative to the active connecting rod is an inwardly recessed arc surface. The arc surface can provide a certain space between the driven connecting rod and the active connecting rod, reduce the probability of touching and wearing between the two, and also enable the wind shield to be accommodated to a more inward position, thereby reducing the probability of the wind shield obstructing the air flow.
[0014] Optionally, the wind shield comprises a plate body and a plate rod, the plate rod is fixedly arranged on the back of the plate body, the driving connecting rod is rotationally connected to the back of the plate rod, and the driven connecting rod is rotationally connected to one end of the plate rod, so as to enhance the strength and stability of the connecting structure.
[0015] Optionally, the plate body comprises an outer plate and an inner plate, the inner plate is arranged on the back of the outer plate, and the plate rod is arranged on the back of the inner plate, so as to ensure that the flow-through port can be covered, and the strength and stability of the plate body can be ensured, and shaking can be prevented.
[0016] Optionally, the wind shield assembly further comprises a plurality of the connecting rod assemblies, the plurality of connecting rod assemblies are sequentially and spacedly arranged along the length direction of the wind shield, so that the plurality of connecting rod assemblies can simultaneously guide, limit and act on the wind shield, and the stability of the movement of the wind shield driven by the connecting rod assemblies can be improved.
[0017] The application also relates to an automobile comprising a front bumper and the air inlet grille;
[0018] The front bumper is provided with an air inlet, the air inlet grille is mounted at the air inlet of the front bumper, and the air inlet is arranged opposite to the flow-through port;
[0019] When the wind shield is in the closed position, the wind shield covers the air inlet;
[0020] When the wind shield is in the open position, the wind shield is arranged away from the air inlet, and the front side of the wind shield is arranged opposite to the inner wall surface of the front bumper;
[0021] The automobile further comprises a vehicle body, and the front bumper and the air inlet grille are both mounted at the front of the vehicle body, so that sufficient air can enter the engine compartment through the opened air inlet grille, and the aerodynamic effect can be improved through the closed air inlet grille.
[0022] Compared with the prior art, the air inlet grille and the automobile have the beneficial effects that:
[0023] In the air inlet grille of the present application, the wind shielding assembly is arranged in the air inlet channel of the grille frame, in the wind shielding assembly, the driving connecting rod and the driven connecting rod of the connecting rod assembly are both rotationally connected to the grille frame and the wind shielding plate, so that the rotation driver connected to the driving connecting rod can in turn drive the wind shielding plate and the driven connecting rod to rotate, so that the wind shielding plate is rotated to the flow-through opening of the grille frame to cover the flow-through opening, at this time, the driven connecting rod abuts against the limiting portion of the air inlet channel, so that the wind shielding plate can be maintained in the closed position, or the wind shielding plate can be rotated to be accommodated in the air inlet channel to open the flow-through opening; in summary, the wind shielding plate of the air inlet grille of the present application is supported by the driving connecting rod and the driven connecting rod rotationally connected to both sides of the wind shielding plate, the stability of the wind shielding plate is good, and it can be ensured that no wind can pass through the wind shielding plate in the case of shielding the flow-through opening. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a structural schematic view of the air inlet grille of the present application.
[0025] Figure 2 It is a structural schematic view of the air inlet grille of the present application when the wind shielding plate is in the closed position.
[0026] Figure 3 It is a structural schematic view of the air inlet grille of the present application when the wind shielding plate is in the open position.
[0027] Figure 4 It is a structural schematic view of the air inlet grille of the present application from another perspective.
[0028] Figure 5 It is a structural schematic view of the air inlet grille of the present application from another perspective.
[0029] The reference signs: 1, grille frame; 11, air inlet channel; 12, flow-through opening; 13, limiting portion; 2, wind shielding assembly; 21, connecting rod assembly; 211, driving connecting rod; 212, driven connecting rod; 22, wind shielding plate; 221, plate body; 2211, outer plate; 2212, inner plate; 222, plate rod; 223, first hinge portion; 224, second hinge portion; 3, front bumper; 31, air inlet; 4, rotation driver. DETAILED DESCRIPTION
[0030] The specific implementation of the present application will be further described in detail in combination with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.
[0031] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "top", "bottom", "inner", "outer", "circumferential" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0032] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0033] As Figures 1 to 5 shown, the utility model discloses an air inlet grille, comprising: grille frame 1, wind -shield subassembly 2 and rotation driver 4, be equipped with air inlet channel 11 in grille frame 1, the front side of grille frame 1 is equipped with the flow through mouth 12 that links to air inlet channel 11, wind -shield subassembly 2 is located in air inlet channel 11, wind -shield subassembly 2 includes connecting rod assembly 21 and baffle 22, connecting rod assembly 21 includes driving connecting rod 211 and driven connecting rod 212, driving connecting rod 211 is rotatably connected in grille frame 1 and baffle 22, driven connecting rod 212 is rotatably connected in grille frame 1 and baffle 22, rotation driver 4 is installed on grille frame 1, the power output end of rotation driver 4 is connected in driving connecting rod 211, for driving driving connecting rod 211 rotation, along the inner wall surface of air inlet channel 11 is equipped with limit portion 13;Driving connecting rod 211 rotation can drive baffle 22 move between closed position and open position, when baffle 22 is in closed position, baffle 22 covers flow through mouth 12, driven connecting rod 212 abuts on limit portion 13 to limit baffle 22 movement, when baffle 22 is in open position, baffle 22 opens flow through mouth 12.
[0034] In the technical solution, the driving connecting rod 211 and the driven connecting rod 212 of the connecting rod assembly 21 are rotationally connected to the grille frame 1 and the wind deflector 22, so that the rotation driver 4 connected to the driving connecting rod 211 can drive the wind deflector 22 and the driven connecting rod 212 to rotate in sequence, drive the wind deflector 22 to rotate to the flow-through opening 12 of the grille frame 1 to cover the flow-through opening 12, and at this time, the driven connecting rod 212 abuts against the limiting portion 13 of the air inlet channel 11, so that the wind deflector 22 can be maintained in the closed position or can be rotated to be accommodated in the air inlet channel 11 to open the flow-through opening 12. In summary, the wind deflector 22 of the air inlet grille is supported by the driving connecting rod 211 and the driven connecting rod 212 rotationally connected to the two sides of the wind deflector 22, and the stability of the wind deflector 22 is good, so that the wind cannot pass through the wind deflector 22 when the flow-through opening 12 is shielded.
[0035] Further, the back surface of the wind deflector 22 is provided with a first hinge portion 223 and a second hinge portion 224, the first hinge portion 223 and the second hinge portion 224 are respectively arranged on opposite sides of the wind deflector 22, one end of the driving connecting rod 211 is rotationally connected to the grille frame 1, and the other end is rotationally connected to the first hinge portion 223, one end of the driven connecting rod 212 is rotationally connected to the second hinge portion 224, and the other end is rotationally connected to the grille frame 1, so that the driving connecting rod 211 and the driven connecting rod 212 can rotate smoothly, and the wind deflector 22 can be moved to the open position and the closed position smoothly.
[0036] Further, as shown in Figure 5 The rotation driver 4 is located at one end of the wind deflector 22 in the length direction, specifically, the rotation driver 4 is continuously arranged in the length direction of the wind deflector 22, so that the rotation driver 4 is not arranged corresponding to the flow-through opening 12, thereby preventing the rotation driver 4 from interfering with the air flow in the air inlet channel 11, and the rotation driver 4 is not arranged protruding downward or upward, which ensures the compactness of the air inlet grille structure to a certain extent.
[0037] Further, the air inlet channel 11 is further provided with a cover plate, the cover plate is detachably connected to the grille frame 1 and covers the rotation driver 4, so as to block dust and other pollutants from directly falling on the rotation driver 4, reduce the difficulty and frequency of maintenance of the rotation driver 4, and facilitate the maintenance of the rotation driver 4, wherein the rotation driver 4 can be a motor.
[0038] Further, as shown in Figures 1 to 4As shown, the wind deflector 22 extends transversely along the first direction, and the end of the driving connecting rod 211 connected to the grille frame 1 is located above the end of the driven connecting rod 212 connected to the grille frame 1; the limiting portion 13 is arranged along the inner wall surface of the air inlet channel 11; when the wind deflector 22 is in the closed position, the driven connecting rod 212 abuts against the limiting portion 13 to limit the movement of the wind deflector 22; when the wind deflector 22 is in the open position, the wind deflector 22 is located above the driving connecting rod 211 and the driven connecting rod 212, and the driving connecting rod 211 and the driven connecting rod 212 support the wind deflector 22 to limit the movement of the wind deflector 22; specifically, the end of the connecting rod connected to the grille frame 1 is taken as the starting point to specify the orientation, when the wind deflector 22 is in the open position, the driving connecting rod 211 is oriented obliquely upward and forward, and the driven connecting rod 212 is oriented obliquely downward and forward, when the wind deflector 22 is in the closed position, the driving connecting rod 211 is oriented obliquely upward and rearward, and the driven connecting rod 212 is oriented obliquely upward and forward, so that the wind deflector 22 can maintain a fixed posture by the mechanical structure when it is in the closed position and the open position, and the rotary driver 4 does not need to output power when the wind deflector 22 is in the two positions, thereby reducing the loss of the rotary driver 4 and increasing the durability and service life of the rotary driver 4; further, the surface of the driven connecting rod 212 relative to the driving connecting rod 211 is an inwardly recessed arc surface, when the driven connecting rod 212 is oriented obliquely upward and forward, the arc surface can provide a certain space for the driven connecting rod 212 and the driving connecting rod 211 to reduce the probability of touching and wearing between the two, and also can enable the wind deflector 22 to be stored to a more inward position to reduce the probability of the wind deflector 22 hindering air flow.
[0039] Further, as shown in the drawings, Figures 1 to 4 The wind deflector 22 includes a plate body 221 and a plate rod 222, the plate rod 222 is fixedly arranged on the back surface of the plate body 221, the driving connecting rod 211 is rotationally connected to the back surface of the plate rod 222, i.e., the first hinge portion 223 is arranged on the back surface of the plate rod 222, and the driven connecting rod is rotationally connected to one end of the plate rod 222, i.e., the second hinge portion 224 is arranged on one end of the plate rod 222, the structure of arranging the plate rod 222 between the plate body 221 and the connecting rod can enhance the strength and stability of the connecting structure, further, arranging the first hinge portion 223 on the back surface of the plate rod 222 can reduce the area of mutual friction between the opposite side surfaces of the driving connecting rod 211 and the plate rod 222 when the wind deflector 22 is in the open position and the wind deflector 22 is located above the driving connecting rod 211, thereby reducing the wear between the driving connecting rod 211 and the plate rod 222.
[0040] Further, as shown in the drawings, Figure 4As shown, the plate body 221 includes an outer plate 2211 and an inner plate 2212. The inner plate 2212 is arranged on the back of the outer plate 2211, and the plate rod 222 is arranged on the back of the inner plate 2212. The structure of the outer plate 2211 blocking the wind and the inner plate 2212 setting the plate rod 222 can ensure that the flow port 12 can be covered while also ensuring the strength and stability of the plate body 221 to prevent shaking. The thickness of the inner plate 2212 is thicker than that of the outer plate 2211.
[0041] Further, such as Figure 1 As shown, the windshield assembly 2 also includes a plurality of connecting rod assemblies 21, and the plurality of connecting rod assemblies 21 are arranged in sequence along the length direction of the windshield 22, so that the plurality of connecting rod assemblies 21 can guide, limit and move the windshield 22 at the same time, so as to improve the stability of the movement of the windshield 22 driven by the connecting rod assembly 21, wherein there can be two groups of connecting rod assemblies 21, which are respectively arranged on both sides of the windshield 22 along its length direction.
[0042] like Figures 1 to 3 As shown, the present application also relates to a car, comprising a front bumper 3 and the aforementioned air intake grille, the front bumper 3 is provided with an air intake 31, the air intake grille is installed at the air intake 31 of the front bumper 3, and the air intake 31 is arranged opposite to the flow port 12; when the windshield 22 is in the closed position, the windshield 22 covers the air intake 31; when the windshield 22 is in the open position, the windshield 22 is arranged to avoid the air intake 31, and the front side surface of the windshield 22 is arranged opposite to the inner wall surface of the front bumper 3; wherein, the car also includes a body, the front bumper 3 and the air intake grille are both installed at the front part of the body, so that the car can allow sufficient air to enter the engine compartment through the open air intake grille and improve the aerodynamic effect through the closed air intake grille.
[0043] Furthermore, the specific connection methods of fixed setting and fixed connection refer to the relative position relationship of two components that can be fixedly connected, including fixing by connecting parts, fixing by welding, fixing by adhesives, fixing by integral molding, and fixing by snap connections.
[0044] Furthermore, the specific connection method of the detachable connection refers to the two connected parts being able to be disassembled and assembled repeatedly and multiple times without being damaged or seriously deformed, including fixation by a connector and fixation by a snap connection.
[0045] Furthermore, the rotational connection refers to the ability of two connected parts to rotate, including connection through bearings and connection through clearance fit.
[0046] Furthermore, the connecting parts include fasteners, straps, ties, pneumatic connecting elements, hydraulic connecting elements, flange plates, Velcro, and buttons.
[0047] In summary, the embodiments of the present invention provide an air intake grille and a car, the technical effects of which are:
[0048] In the air intake grille of the present application, the windshield assembly 2 is arranged in the air intake channel 11 of the grille frame 1. In the windshield assembly 2, the active connecting rod 211 and the driven connecting rod 212 of the connecting rod assembly 21 are both rotatably connected to the grille frame 1 and the windshield 22, so that the rotation driver 4 connected to the active connecting rod 211 can drive the windshield 22 and the driven connecting rod 212 to rotate in turn, so that the windshield 22 rotates to the flow opening 12 of the grille frame 1 to cover the flow opening 12. At this time, the driven connecting rod 4 is connected to the active connecting rod 211. The rod 212 abuts against the limiting portion 13 of the air intake channel 11, so that the wind shield 22 can be maintained in a closed position, or the wind shield 22 can be rotated to be stored in the air intake channel 11 to open the flow port 12; in summary, the wind shield 22 of the air intake grille of the present application is supported by the active connecting rod 211 and the driven connecting rod 212 rotatably connected on both sides thereof, and the wind shield 22 has good stability, which can ensure that no wind will pass through the wind shield 22 when the flow port 12 is blocked.
[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.
Claims
1. An air intake grille, characterized in that, It comprises a grating frame (1), a wind shield assembly (2) and a rotary driver (4); The grating frame (1) is internally provided with an air inlet channel (11), the front side of the grating frame (1) is provided with a flow-through opening (12) communicated to the air inlet channel (11), the wind shield assembly (2) is arranged in the air inlet channel (11), the wind shield assembly (2) comprises a connecting rod assembly (21) and a wind shield plate (22), the connecting rod assembly (21) comprises a driving connecting rod (211) and a driven connecting rod (212), the driving connecting rod (211) is rotatably connected to the grating frame (1) and the wind shield plate (22), the driven connecting rod (212) is rotatably connected to the grating frame (1) and the wind shield plate (22), the rotary driver (4) is mounted on the grating frame (1), the power output end of the rotary driver (4) is connected to the driving connecting rod (211) for driving the driving connecting rod (211) to rotate, and a limiting portion (13) is arranged along the inner wall surface of the air inlet channel (11); The driving connecting rod (211) can drive the wind shield plate (22) to move between a closed position and an open position, when the wind shield plate (22) is in the closed position, the wind shield plate (22) covers the flow-through opening (12), the driven connecting rod (212) abuts against the limiting portion (13) to limit the movement of the wind shield plate (22), when the wind shield plate (22) is in the open position, the wind shield plate (22) opens the flow-through opening (12).
2. The air intake grille of claim 1, wherein, The back surface of the wind shield plate (22) is provided with a first hinge portion (223) and a second hinge portion (224), the first hinge portion (223) and the second hinge portion (224) are arranged on opposite sides of the wind shield plate (22) respectively, one end of the driving connecting rod (211) is rotatably connected to the grating frame (1), the other end is rotatably connected to the first hinge portion (223), one end of the driven connecting rod (212) is rotatably connected to the second hinge portion (224), the other end is rotatably connected to the grating frame (1).
3. The air intake grille of claim 1, wherein, The rotary driver (4) is located at one end of the wind shield plate (22) along the length direction.
4. The air intake grille of claim 1, wherein, The air inlet channel (11) is further provided with a cover plate, the cover plate is detachably connected to the grating frame (1) and covers the rotary driver (4).
5. The air intake screen of claim 1, wherein, The wind shield plate (22) extends transversely along a first direction, one end of the driving connecting rod (211) connected to the grating frame (1) is located above one end of the driven connecting rod (212) connected to the grating frame (1); When the wind shield plate (22) is in the open position, the wind shield plate (22) is located above the driving connecting rod (211) and the driven connecting rod (212), the driving connecting rod (211) and the driven connecting rod (212) support the wind shield plate (22) to limit the movement of the wind shield plate (22).
6. The air intake grille of claim 5, wherein, The surface of the driven connecting rod (212) relative to the driving connecting rod (211) is an inwardly recessed arc surface.
7. The air intake grille of claim 5, wherein, The wind shield (22) comprises a plate body (221) and a plate rod (222), the plate rod (222) is fixedly arranged at the back of the plate body (221), the driving connecting rod (211) is rotationally connected to the back of the plate rod (222), and the driven connecting rod is rotationally connected to one end of the plate rod (222).
8. The air intake grille of claim 7, wherein, The plate body (221) comprises an outer plate (2211) and an inner plate (2212), the inner plate (2212) is arranged at the back of the outer plate (2211), and the plate rod (222) is arranged at the back of the inner plate (2212).
9. The air intake screen of claim 1, wherein, The wind shield assembly (2) further comprises a plurality of the connecting rod assemblies (21), and the connecting rod assemblies (21) are sequentially and spacedly arranged along the length direction of the wind shield (22).
10. An automobile characterized by comprising: The front bumper (3) is provided with an air inlet (31), the air inlet grille is installed at the air inlet (31) of the front bumper (3), and the air inlet (31) is arranged opposite to the flow-through port (12); When the wind shield (22) is in the closed position, the wind shield (22) covers the air inlet (31); When the wind shield (22) is in the open position, the wind shield (22) is arranged away from the air inlet (31), and the front side of the wind shield (22) is arranged opposite to the inner wall surface of the front bumper (3).