Air knife assembly, side skirt protection plate device and automobile

Abstract

The invention provides an air knife assembly, a side skirt protection plate device and an automobile, and relates to the technical field of automobile exterior trimming. The air knife assembly comprises an inner plate, an outer plate, a first positioning structure and a first fastening structure. The first positioning structure comprises a first positioning column and a first positioning hole, one of the first positioning column and the first positioning hole is arranged on the inner plate, the other of the first positioning column and the first positioning hole is arranged on the outer plate, and the first positioning column is used for being inserted into the first positioning hole when the inner plate is arranged on one side of the outer plate; the relative movement between the inner plate and the outer plate in the direction parallel to the plate surface of the inner plate is limited; the inner plate and the outer plate are fixedly connected through a first fastening structure, and the first fastening structure can limit relative movement between the inner plate and the outer plate in the direction perpendicular to the plate face of the inner plate. According to the air knife assembly, through mutual cooperation of the first fastening structure and the first positioning structure, relative movement between the inner plate and the outer plate can be effectively limited so that the structural stability of the air knife assembly can be guaranteed, and the connection convenience between the inner plate and the outer plate can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile exterior, in particular to a wind knife assembly, a side skirt guard plate device and an automobile. BACKGROUND

[0002] In order to reduce the air resistance of the vehicle during driving, the current automobile exterior design also includes a wind knife. The wind knife generally includes an outer plate and an inner plate fixed to the inner side of the outer plate. The inner plate is used for fixed connection with the automobile. However, the inner plate and the outer plate in the existing wind knife are usually fixedly connected by welding or bonding, which leads to a complex wind knife assembly process and a long assembly time. SUMMARY

[0003] The present application aims to provide a wind knife assembly, a side skirt guard plate device and an automobile to alleviate the technical problem that the inner plate and the outer plate in the existing wind knife are fixedly connected by welding or bonding, which leads to a complex wind knife assembly process and a long assembly time.

[0004] In a first aspect, the present application provides a wind knife assembly, comprising an inner plate, an outer plate, a first positioning structure and a first fastening structure. The first positioning structure comprises a first positioning column and a first positioning hole. One of the first positioning column and the first positioning hole is arranged on the inner plate, and the other is arranged on the outer plate. The first positioning column is used for being inserted into the first positioning hole when the inner plate is arranged on one side of the outer plate, so as to limit the relative movement between the inner plate and the outer plate along the direction parallel to the plate surface of the inner plate. The inner plate and the outer plate are fixedly connected by the first fastening structure. The first fastening structure can limit the relative movement between the inner plate and the outer plate along the direction perpendicular to the plate surface of the inner plate.

[0005] In an optional embodiment, the first fastening structure comprises a screw, and the first fastening structure is a plurality of. The plurality of first fastening structures are distributed along the length direction of the inner plate.

[0006] In an optional embodiment, a latch structure is further included. The latch structure comprises a latch and a latch hole. One of the latch and the latch hole is arranged at the edge of the inner plate or a position close to the edge of the inner plate, and the other is arranged at the edge of the outer plate or a position close to the edge of the outer plate. The latch is used for being inserted into the latch hole along the direction parallel to the plate surface of the inner plate.

[0007] In an optional embodiment, a limiting structure is further included, the limiting structure comprising a limiting protrusion and a limiting groove, one of the limiting protrusion and the limiting groove being disposed at the edge of the inner plate or near the edge of the inner plate, and the other being disposed at the edge of the outer plate or near the edge of the outer plate, the limiting groove extending along the extending direction of the plate edge at its location, and the limiting protrusion being slidably connected to the limiting groove along the extending direction of the limiting groove.

[0008] In an optional embodiment, an abutment protrusion is further included, which is disposed at the edge of the outer plate and spaced from the surface of the outer plate. The abutment protrusion is used to abut against the side of the inner plate opposite to the outer plate when the inner plate is disposed on one side of the outer plate, so as to restrict relative movement between the inner plate and the outer plate in a direction perpendicular to the surface of the inner plate.

[0009] In an optional embodiment, the inner plate is provided with a rib structure on the side near the outer plate, and the rib structure is able to abut against the outer plate when the inner plate is disposed on the side of the outer plate.

[0010] Secondly, the present invention provides a side skirt guard plate device, including the air knife assembly described in any of the foregoing embodiments.

[0011] In an optional embodiment, a second fastening structure and a side skirt guard are also included. The second fastening structure is disposed on the air knife assembly for fixing the air knife assembly to the side skirt guard.

[0012] In an optional embodiment, a second positioning structure is further included. The second positioning structure includes a second positioning post and a second positioning hole. One of the second positioning post and the second positioning hole is disposed on the air knife assembly, and the other is disposed on the side skirt guard plate. The second positioning post is used to be inserted into the second positioning hole when the air knife assembly is fixed to the side skirt guard plate, so as to restrict the relative movement between the air knife assembly and the side skirt guard plate in a direction parallel to the plate surface of the side skirt guard plate.

[0013] Thirdly, the present invention provides an automobile including the side skirt protection device described in any of the foregoing embodiments.

[0014] The air knife assembly provided by this invention includes an inner plate, an outer plate, a first positioning structure, and a first fastening structure. The first positioning structure includes a first positioning post and a first positioning hole. One of the first positioning post and the first positioning hole is disposed on the inner plate, and the other is disposed on the outer plate. The first positioning post is used to insert into the first positioning hole when the inner plate is disposed on one side of the outer plate, thereby restricting relative movement between the inner plate and the outer plate in a direction parallel to the surface of the inner plate. The inner plate and the outer plate are fixedly connected by the first fastening structure, which can restrict relative movement between the inner plate and the outer plate in a direction perpendicular to the surface of the inner plate. The air knife assembly provided by this invention is an automotive exterior trim part, used to be installed on the outer surface structure of a car, such as a side skirt, to reduce air resistance during vehicle operation. When assembling this air knife assembly, the inner plate of the air knife assembly can be placed on one side of the outer plate first, and the first positioning post can be inserted into the first positioning hole. Then, the inner plate and the outer plate can be fixedly connected using the first fastening structure, thus completing the connection and fixation between the inner plate and the outer plate. Since the connection process between the inner and outer plates only requires the insertion of the first positioning post into the first positioning hole and the installation of the first fastening structure, the connection process between the inner and outer plates of this air knife assembly is more convenient and has higher assembly efficiency compared to the welding or bonding methods in the prior art. It should be noted that because the first fastening structure can restrict relative movement between the inner and outer plates along a direction perpendicular to the inner plate, and the insertion of the first positioning post into the first positioning hole can restrict relative movement between the inner and outer plates along a direction parallel to the inner plate, the connection between the inner and outer plates via the first positioning structure and the first fastening structure can effectively prevent relative movement between the inner and outer plates, thereby effectively ensuring the structural stability of the air knife assembly.

[0015] Compared with the prior art, the air knife assembly provided by the present invention connects the inner plate and the outer plate through the first fastening structure and restricts the relative movement between the inner plate and the outer plate with the first positioning structure. This not only effectively ensures the structural stability of the air knife assembly, but also improves the convenience of connection between the inner plate and the outer plate and improves the assembly efficiency.

[0016] The side skirt guard device provided by the present invention includes the above-mentioned air knife assembly, and therefore the side skirt guard device has the same beneficial effects as the above-mentioned air knife assembly.

[0017] The automobile provided by the present invention includes the aforementioned side skirt protection device, and thus the automobile has the same beneficial effects as the aforementioned side skirt protection device. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a partial automotive structure including a wind knife assembly is provided for an embodiment of the present invention; Figure 2 This is a front view of the air knife assembly provided in an embodiment of the present invention; Figure 3 A partial cross-sectional view of a car including an air knife assembly, provided for an embodiment of the present invention; Figure 4 This is a cross-sectional view of the air knife assembly provided in an embodiment of the present invention; Figure 5 for Figure 4 Enlarged diagram of part A in the diagram; Figure 6 This is another cross-sectional view of the air knife assembly provided in an embodiment of the present invention; Figure 7 This is a partial cross-sectional view of the air knife assembly provided in an embodiment of the present invention; Figure 8 This is a front view of the outer panel provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the inner plate provided in an embodiment of the present invention; Figure 10 for Figure 2 CC section view in the middle; Figure 11 for Figure 2 DD section view in the middle; Figure 12 for Figure 2 EE section view; Figure 13 for Figure 2 FF section view; Figure 14 This is a partial structural schematic diagram of the side skirt guard plate device provided in an embodiment of the present invention; Figure 15 for Figure 14 A top view of a partial side skirt guard plate device in the middle; Figure 16 for Figure 15 GG section view in the image.

[0020] Icons: 1-Inner panel; 10-Rib structure; 2-Outer panel; 20-Abutting protrusion; 21-Extension plate; 3-First positioning structure; 4-First fastening structure; 5-Side outer panel; 50-Fender; 500-Fender bracket; 51-Side skirt panel; 510-Bending plate; 5100-Snap-fit ​​protrusion; 6-Pin structure; 60-Pin; 61-Socket; 7-Limiting structure; 70-Limiting protrusion; 71-Limiting groove; 8-Second fastening structure; 9-Second positioning structure. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0024] Example: like Figures 1-9 As shown, the air knife assembly provided in this embodiment includes an inner plate 1, an outer plate 2, a first positioning structure 3, and a first fastening structure 4. The first positioning structure 3 includes a first positioning post and a first positioning hole. One of the first positioning post and the first positioning hole is disposed on the inner plate 1, and the other is disposed on the outer plate 2. The first positioning post is used to be inserted into the first positioning hole when the inner plate 1 is disposed on one side of the outer plate 2, so as to restrict the relative movement between the inner plate 1 and the outer plate 2 in a direction parallel to the plate surface of the inner plate 1. The inner plate 1 and the outer plate 2 are fixedly connected by the first fastening structure 4, which can restrict the relative movement between the inner plate 1 and the outer plate 2 in a direction perpendicular to the plate surface of the inner plate 1.

[0025] The air knife assembly provided in this embodiment is an automotive exterior component, used for installation on the exterior surface structure of a vehicle, such as the side skirt 51, to reduce air resistance during vehicle operation. Specifically, such as... Figure 1 and Figure 3As shown, the exterior structure of a car typically includes a side panel 5, a fender bracket 500 fixed to the side panel 5, a fender 50 fixed to the fender bracket 500, and a side skirt 51 located below the fender 50 and connected to the fender bracket 500. The air knife assembly is mounted on the side skirt 51 to make the mating end of the side skirt 51 with the fender 50 a floating air knife design.

[0026] When assembling this air knife assembly, you can first... Figure 9 The inner plate 1 shown is placed Figure 8 On one side of the outer plate 2 shown, the first positioning pin is simultaneously inserted into the first positioning hole, as shown. Figure 2 As shown, the inner plate 1 and the outer plate 2 are then fixedly connected using the first fastening structure 4, thus completing the connection and fixation between the inner plate 1 and the outer plate 2. Since the connection process between the inner plate 1 and the outer plate 2 only requires the insertion of the first positioning post into the first positioning hole and the installation of the first fastening structure 4, the connection process between the inner plate 1 and the outer plate 2 of this air knife assembly is more convenient and has higher assembly efficiency compared to the welding or bonding methods in the prior art.

[0027] It should be noted that, since the first fastening structure 4 can restrict the relative movement between the inner plate 1 and the outer plate 2 in the direction perpendicular to the inner plate 1, and the first positioning post can restrict the relative movement between the inner plate 1 and the outer plate 2 in the direction parallel to the inner plate 1 when inserted into the first positioning hole, when the inner plate 1 and the outer plate 2 are connected to each other through the first positioning structure 3 and the first fastening structure 4, the relative movement between the inner plate 1 and the outer plate 2 can also be effectively prevented, thereby effectively ensuring the structural stability of the air knife assembly and preventing the air knife assembly from shaking, making abnormal noises and deforming during high-speed driving of the vehicle.

[0028] Compared with the prior art, the air knife assembly provided in this embodiment connects the inner plate 1 and the outer plate 2 through the first fastening structure 4 and restricts the relative movement between the inner plate 1 and the outer plate 2 in conjunction with the first positioning structure 3. This not only effectively ensures the structural stability of the air knife assembly, but also improves the connection convenience between the inner plate 1 and the outer plate 2 and improves the assembly efficiency.

[0029] It should also be noted that mounting the air knife assembly onto the side skirt 51 to form a floating air knife design allows the air knife assembly to be applied to more complex body shapes without altering the vehicle's overall appearance. Furthermore, the air knife assembly provided in this embodiment is formed by connecting the inner plate 1 and the outer plate 2, which not only provides better structural strength and meets the performance requirements of the side skirt 51, but also improves the reliability of the side skirt 51.

[0030] Furthermore, the total length of the side skirt 51 is typically 2150mm, while the length of the air knife assembly in this embodiment can be 195mm, and the height of the air knife assembly is 80mm. Since the air knife assembly in this embodiment is installed on the side skirt 51 after the inner panel 1 and outer panel 2 are first connected and fixed, this air knife assembly also facilitates precise control of the alignment requirements between the side skirt 51 and the fender 50 during vehicle assembly, as well as precise control of the matching requirements between the side skirt 51 and other surrounding structures, thereby reducing the shrinkage and deformation problems caused by excessive length of the side skirt 51.

[0031] To effectively limit the relative movement between the inner panel 1 and the outer panel 2 along a direction parallel to the surface of the inner panel 1, such as... Figure 2 As shown, the first positioning post in the first positioning structure 3 can be a column with a cross-shaped radial cross section. Correspondingly, the radial cross section of the first positioning hole is also cross-shaped. At this time, the first positioning post and the first positioning hole cooperate with each other and can effectively restrict the relative movement between the inner plate 1 and the outer plate 2 along the length and height directions of the air knife assembly, thereby effectively ensuring the overall structural stability of the air knife assembly.

[0032] like Figure 2 As shown, there can be multiple first positioning structures 3, which are spaced apart along the length of the air knife assembly. In this case, the multiple first positioning structures 3 can cooperate with each other to further improve the structural stability of the air knife assembly.

[0033] Furthermore, two first positioning structures 3 can be used, one of which is the main first positioning structure 3, and the other is the secondary first positioning structure 3. The positioning accuracy between the main first positioning structure 3 and the secondary first positioning structure 3 for the inner plate 1 and the outer plate 2 can be controlled within 0.2mm.

[0034] The first fastening structure 4 can be a fastener such as a rivet or screw. In this embodiment, the first fastening structure 4 preferably includes screws, and there are multiple first fastening structures 4, such as... Figure 2 As shown, multiple first fastening structures 4 are distributed at intervals along the length direction of the inner plate 1.

[0035] Specifically, such as Figure 8 and Figure 9 As shown, the first fastening structure 4 may further include a threaded hole provided on the inner plate 1 and a groove provided on the side of the outer plate 2 facing the inner plate 1. The groove communicates with the threaded hole and the inner wall of the groove is provided with an internal thread adapted to the screw. The screw in the first fastening structure 4 is threadedly connected to the above-mentioned threaded hole and groove to fix the inner plate 1 and the outer plate 2 together.

[0036] like Figure 4 , Figure 5 , Figure 8 andFigure 9 As shown, the air knife assembly provided in this embodiment also includes a pin structure 6. The pin structure 6 includes a pin 60 and a socket 61. One of the pin 60 and the socket 61 is located at the edge of the inner plate 1 or near the edge of the inner plate 1, and the other is located at the edge of the outer plate 2 or near the edge of the outer plate 2. The pin 60 is used to be inserted into the socket 61 in a direction parallel to the surface of the inner plate 1.

[0037] When assembling the air knife assembly, when the inner plate 1 is placed on one side of the outer plate 2, the pin 60 can also be inserted into the socket 61 at the same time, and then the connection process of the first fastening structure 4 can be carried out.

[0038] It can be seen that the pin structure 6 can not only limit the inner plate 1 and the outer plate 2 after assembly, thereby further improving the structural stability between the inner plate 1 and the outer plate 2, but also pre-position the inner plate 1 and the outer plate 2 during the assembly of the air knife assembly, which is beneficial for the subsequent connection process of the first fastening structure 4 and improves the assembly accuracy.

[0039] Multiple pin structures 6 can also be used, with multiple pin structures 6 distributed at intervals along the length of the air knife assembly. The limiting accuracy of the pin structure 6 between the inner plate 1 and the outer plate 2 can be controlled within 0.2mm-0.3mm.

[0040] To prevent the pin structure 6 from causing significant interference during the assembly process between the inner plate 1 and the outer plate 2, this embodiment preferably provides the pin structure 6 only at the top edge of the air knife assembly. Furthermore, to facilitate the insertion of the pin 60 into the insertion hole 61 along a direction parallel to the surface of the inner plate 1, as shown... Figure 10 and Figure 13 As shown, the top edge of the outer panel 2 may have a flange extending toward the inner panel 1. The pin 60 is fixed below the flange of the outer panel 2 and extends in a direction parallel to the surface of the inner panel 1. Correspondingly, the top edge of the inner panel 1 has a flange extending toward the outer panel 2. The insertion hole 61 is provided on the flange of the inner panel 1. When the inner panel 1 is placed on the side of the outer panel 2, the flange of the inner panel 1 abuts against the lower part of the flange of the outer panel 2 and the pin 60 is inserted into the insertion hole 61.

[0041] like Figure 6 , Figure 8 and Figure 11 As shown, the air knife assembly provided in this embodiment also includes a limiting structure 7. The limiting structure 7 includes a limiting protrusion 70 and a limiting groove 71. One of the limiting protrusion 70 and the limiting groove 71 is disposed at the edge of the inner plate 1 or near the edge of the inner plate 1, and the other is disposed at the edge of the outer plate 2 or near the edge of the outer plate 2. The limiting groove 71 extends along the extending direction of the plate edge at its location, and the limiting protrusion 70 is used to slide and connect within the limiting groove 71 along the extending direction of the limiting groove 71.

[0042] When assembling the air knife assembly, when the inner plate 1 is placed on one side of the outer plate 2, the limiting protrusion 70 can also be set in the limiting groove 71 at the same time. At this time, the limiting protrusion 70 is slidably connected in the limiting groove 71 along the extension direction of the limiting groove 71. The limiting protrusion 70 and the limiting groove 71 can cooperate with each other to further prevent the inner plate 1 and the outer plate 2 from moving relative to each other in the direction perpendicular to the surface of the inner plate 1.

[0043] like Figure 8 As shown, there can be multiple limiting structures 7. Multiple limiting structures 7 are distributed at intervals along the length direction of the air knife assembly. The limiting accuracy of the limiting structure 7 between the inner plate 1 and the outer plate 2 can be controlled within 0.3mm.

[0044] Since the installation of the inner plate 1 and the outer plate 2 is caused by the pin structure 6 on all edges, it is difficult to assemble and connect the inner plate 1 and the outer plate 2 smoothly. Therefore, in this embodiment, the air knife assembly preferably also includes a limiting structure 7, and the limiting structure 7 is installed on the edge of the air knife assembly that does not have the pin structure 6. When the inner plate 1 is placed on one side of the outer plate 2, the pin 60 can be inserted into the insertion hole 61 first, and the first positioning post can be inserted into the first positioning hole. Then, the inner plate 1 is pressed towards the outer plate 2, so that the limiting protrusion 70 is engaged in the limiting groove 71, so that the inner plate 1 is stably located on one side of the outer plate 2. Thus, the limiting structure 7 and the pin structure 6 cooperate with each other, which can not only ensure the ease of assembly of the air knife assembly, but also arrange multiple limiting points along the edge of the air knife assembly, further effectively improving the assembly accuracy of the air knife assembly.

[0045] like Figure 11 As shown, the limiting protrusion 70 in the limiting structure 7 can also be provided on the flange of the outer plate 2, and correspondingly, the limiting groove 71 is provided on the flange of the inner plate 1.

[0046] It should be noted that placing the pin structure 6 and the limiting structure 7 near the edge or edge of the air knife assembly not only facilitates assembly, but also allows for structural reinforcement of the inner plate 1 and the outer plate 2, preventing the risk of shrinkage and deformation on the outer surfaces of the inner plate 1 and the outer plate 2.

[0047] like Figure 7 , Figure 8 and Figure 12 As shown, the air knife assembly provided in this embodiment also includes an abutment protrusion 20. The abutment protrusion 20 is disposed at the edge of the outer plate 2 and has a gap between it and the surface of the outer plate 2. The abutment protrusion 20 is used to abut against the side of the inner plate 1 opposite to the outer plate 2 when the inner plate 1 is disposed on one side of the outer plate 2, so as to restrict the relative movement between the inner plate 1 and the outer plate 2 in a direction perpendicular to the surface of the inner plate 1.

[0048] When the inner plate 1 is placed on one side of the outer plate 2, the abutting protrusion 20 on the outer plate 2 can also abut against the back of the inner plate 1 on the side of the outer plate 2. At this time, the abutting protrusion 20 can pre-position and limit the inner plate 1, further improving the assembly accuracy between the inner plate 1 and the outer plate 2.

[0049] To improve the abutment stability of the abutment protrusion 20, an abutment groove can be provided on the inner plate 1 at the position corresponding to the abutment protrusion 20, and the abutment protrusion 20 abuts against the abutment groove. In this embodiment, the limiting accuracy of the abutment protrusion 20 between the inner plate 1 and the outer plate 2 can be controlled within 0.3mm.

[0050] When the air knife assembly includes a pin structure 6 and a limiting structure 7, the abutment protrusion 20 can be set at the edge of the outer plate 2 where the pin structure 6 and the limiting structure 7 are not provided. In this case, the abutment protrusion 20 can further increase the limiting points at the edge of the air knife assembly and further improve the assembly accuracy of the air knife assembly.

[0051] like Figure 9 As shown, a rib structure 10 is provided on the side of the inner plate 1 near the outer plate 2, and the rib structure 10 can abut against the outer plate 2 when the inner plate 1 is located on the side of the outer plate 2.

[0052] The rib structure 10 can not only improve the structural strength of the inner panel 1, but also play a supporting role when the inner panel 1 is fixed to one side of the outer panel 2, preventing deformation problems such as panel grooves from occurring on the inner panel 1 and the outer panel 2 during vehicle operation.

[0053] The rib structure 10 may include multiple ribs, some of which are arranged horizontally, while the rest are arranged vertically. The horizontally arranged ribs can be connected to the vertically arranged ribs. To control the spacing between the inner plate 1 and the outer plate 2 to within 0.2 mm, this embodiment preferably uses twelve ribs.

[0054] This embodiment also provides a side skirt guard device, which includes the above-mentioned air knife assembly. Therefore, the side skirt guard device and the above-mentioned air knife assembly can solve the same technical problem and achieve the same technical effect, and will not be described in detail here.

[0055] like Figure 14 and Figure 15 As shown, the side skirt guard plate device provided in this embodiment may further include a second fastening structure 8 and a side skirt guard plate 51. The second fastening structure 8 is disposed on the air knife assembly and is used to fix the air knife assembly to the side skirt guard plate 51.

[0056] The air knife assembly and the side skirt guard plate 51 can also be fixedly connected by welding, bonding or other methods. Since welding and bonding result in low assembly efficiency, in order to ensure the connection stability between the air knife assembly and the side skirt guard plate 51 and improve the assembly efficiency, this embodiment preferably connects the air knife assembly and the side skirt guard plate 51 through the second fastening structure 8.

[0057] The second fastening structure 8 may also include screws, and there may be multiple second fastening structures 8. These multiple second fastening structures 8 are spaced apart along the length of the inner plate 1. Specifically, for example... Figure 2 , Figure 14 and Figure 15 As shown, there can be four second fastening structures 8; the outer plate 2 of the air knife assembly includes a main panel and an extension plate 21. The extension plate 21 is fixed at the bottom edge of the main panel and is set at an angle to the main panel. Three of the second fastening structures 8 are set on the inner plate 1 at positions corresponding to the main panel of the outer plate 2, and are used to fix the inner plate 1 to the side skirt guard plate 51. The remaining second fastening structures 8 are set on the extension plate 21, and are used to fix the extension plate 21 to the side skirt guard plate 51. At this time, the extension plate 21 can cooperate with the side skirt guard plate 51 to limit the air knife assembly along the height direction of the air knife assembly, thereby effectively improving the installation stability of the air knife assembly.

[0058] To further improve the installation stability of the wind knife assembly on the side skirt 51, such as Figure 14 , Figure 15 and Figure 16 As shown, the side skirt guard plate 51 may include a bent plate 510 bent downwards. The bottom edge of the bent plate 510 is provided with a snap-fit ​​protrusion 5100. The bottom edge of the bent plate 510 is connected to the edge of the extension plate 21, and the snap-fit ​​protrusion 5100 abuts against the upper surface of the extension plate 21. At this time, the snap-fit ​​protrusion 5100 can increase the number of connection points between the extension plate 21 and the side skirt guard plate 51, further improving the installation accuracy and installation stability between the air knife assembly and the side skirt guard plate 51.

[0059] The snap-fit ​​protrusion 5100 and the extension plate 21 work together to control the installation accuracy between the air knife assembly and the side skirt guard plate 51 to 0.2mm.

[0060] Furthermore, the side skirt guard plate device provided in this embodiment also includes a second positioning structure 9, such as... Figure 2 As shown, the second positioning structure 9 includes a second positioning post and a second positioning hole. One of the second positioning post and the second positioning hole is disposed on the air knife assembly, and the other is disposed on the side skirt guard plate 51. The second positioning post is used to be inserted into the second positioning hole when the air knife assembly is fixed on the side skirt guard plate 51, so as to restrict the relative movement between the air knife assembly and the side skirt guard plate 51 in a direction parallel to the plate surface of the side skirt guard plate 51.

[0061] When the second positioning post is inserted into the second positioning hole, it can restrict the relative movement between the air knife assembly and the side skirt guard plate 51 along the direction parallel to the plate surface of the side skirt guard plate 51, thereby improving the installation stability and installation accuracy of the air knife assembly on the side skirt guard plate 51.

[0062] Furthermore, the second positioning post in the second positioning structure 9 can also be a column with a cross-shaped radial cross section. Correspondingly, the radial cross section of the second positioning hole is cross-shaped. In this case, the second positioning post and the second positioning hole cooperate with each other to effectively restrict the relative movement between the air knife assembly and the side skirt 51 along the length and height directions of the air knife assembly, thereby effectively ensuring the installation stability of the air knife assembly on the side skirt 51.

[0063] like Figure 2 As shown, there can be multiple second positioning structures 9. Multiple second positioning structures 9 are spaced apart along the length direction of the air knife assembly. In this case, multiple second positioning structures 9 can cooperate with each other to further improve the structural stability of the air knife assembly.

[0064] Furthermore, two second positioning structures 9 can be used, one of which is the main second positioning structure 9, and the other is the auxiliary second positioning structure 9. The positioning accuracy between the main second positioning structure 9 and the auxiliary second positioning structure 9 can be controlled within 0.2mm.

[0065] like Figure 1 As shown, this embodiment also provides a car that includes the aforementioned side skirt protection device. Since the car includes the aforementioned side skirt protection device, the car and the aforementioned side skirt protection device can solve the same technical problem and achieve the same technical effect, which will not be described in detail here.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind knife assembly, characterized in that, It includes an inner plate (1), an outer plate (2), a first positioning structure (3), and a first fastening structure (4); The first positioning structure (3) includes a first positioning post and a first positioning hole. One of the first positioning post and the first positioning hole is disposed on the inner plate (1) and the other is disposed on the outer plate (2). The first positioning post is used to be inserted into the first positioning hole when the inner plate (1) is disposed on the side of the outer plate (2) to restrict the relative movement between the inner plate (1) and the outer plate (2) in a direction parallel to the plate surface of the inner plate (1). The inner plate (1) and the outer plate (2) are fixedly connected by the first fastening structure (4), which can restrict the relative movement between the inner plate (1) and the outer plate (2) in a direction perpendicular to the inner plate (1).

2. The air knife assembly according to claim 1, characterized in that, The first fastening structure (4) includes screws and there are multiple first fastening structures (4), which are distributed at intervals along the length direction of the inner plate (1).

3. The air knife assembly according to claim 1, characterized in that, It also includes a pin structure (6), which includes a pin (60) and a socket (61). One of the pin (60) and the socket (61) is located at the edge of the inner plate (1) or near the edge of the inner plate (1), and the other is located at the edge of the outer plate (2) or near the edge of the outer plate (2). The pin (60) is used to be inserted into the socket (61) in a direction parallel to the surface of the inner plate (1).

4. The air knife assembly according to any one of claims 1-3, characterized in that, It also includes a limiting structure (7), which includes a limiting protrusion (70) and a limiting groove (71). One of the limiting protrusion (70) and the limiting groove (71) is located at the edge of the inner plate (1) or near the edge of the inner plate (1), and the other is located at the edge of the outer plate (2) or near the edge of the outer plate (2). The limiting groove (71) extends along the extension direction of the plate edge at its location. The limiting protrusion (70) is used to slide in the limiting groove (71) along the extension direction of the limiting groove (71).

5. The air knife assembly according to any one of claims 1-3, characterized in that, It also includes an abutment protrusion (20), which is disposed at the edge of the outer plate (2) and has a gap between it and the surface of the outer plate (2). The abutment protrusion (20) is used to abut against the side of the inner plate (1) opposite to the outer plate (2) when the inner plate (1) is disposed on one side of the outer plate (2), so as to restrict the relative movement between the inner plate (1) and the outer plate (2) in a direction perpendicular to the surface of the inner plate (1).

6. The air knife assembly according to any one of claims 1-3, characterized in that, The inner plate (1) is provided with a rib structure (10) on the side near the outer plate (2), and the rib structure (10) can abut against the outer plate (2) when the inner plate (1) is provided on the side of the outer plate (2).

7. A side skirt guard plate device, characterized in that, Includes the air knife assembly as described in any one of claims 1-6.

8. The side skirt guard plate device according to claim 7, characterized in that, It also includes a second fastening structure (8) and a side skirt guard plate (51). The second fastening structure (8) is disposed on the air knife assembly and is used to fix the air knife assembly to the side skirt guard plate (51).

9. The side skirt guard plate device according to claim 8, characterized in that, It also includes a second positioning structure (9), which includes a second positioning post and a second positioning hole. One of the second positioning post and the second positioning hole is disposed on the air knife assembly, and the other is disposed on the side skirt guard plate (51). The second positioning post is used to be inserted into the second positioning hole when the air knife assembly is fixed on the side skirt guard plate (51) to restrict the relative movement between the air knife assembly and the side skirt guard plate (51) in a direction parallel to the plate surface of the side skirt guard plate (51).

10. A car, characterized in that, Includes the side skirt guard device as described in any one of claims 7-9.

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