Air curtain assembly and vehicle

Abstract

The invention discloses an air curtain assembly and a vehicle. The air curtain assembly comprises a bumper, a wheel cover protection plate and an air curtain body. The air curtain body is arranged on the inner side of the bumper and extends to the wheel cover protection plate, and the air curtain body and at least part of the bumper are spaced to form an air curtain channel; wherein a sinking groove is formed in the bumper, a radar installation position is formed on the bottom wall of the sinking groove, and the sinking groove is sunken towards the interior of the air curtain channel and divides at least part of the air curtain channel into a first airflow channel and a second airflow channel. According to the air curtain assembly, the sinking groove which is sunken towards the interior of the air curtain channel is designed in the bumper, the double-channel type air curtain channel is defined, the wind resistance reducing capacity is improved, meanwhile, the problems of penetration and light transmission generated by a traditional single-channel air curtain structure in order to improve the wind resistance reducing capacity are solved, and the air curtain assembly is suitable for being used for a vehicle. And a mounting position is provided for monitoring equipment such as radar, and the safety and attractiveness of the vehicle are improved.

Description

Technical Field

[0001] The present invention relates to the field of household electrical appliances, and in particular to an air curtain assembly and a vehicle. Background Art

[0002] The traditional bumper air curtain structure is a thin and long single channel. In order to enhance the air curtain structure's effect of reducing wind resistance, the cross-sectional area of ​​the air curtain's inlet and outlet needs to be as large as possible. However, this air curtain channel is prone to cause defects in the vehicle's appearance, and the air curtain's outlet and inlet will cause large-area appearance see-through and light leakage problems. In addition, radar and other monitoring equipment arranged on the outside of the bumper are often in the air curtain channel. Rapid airflow will not only affect the accuracy of the signal, but also accelerate the speed of equipment damage, affecting the service life of the monitoring equipment. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an air curtain assembly. The air curtain assembly according to the present invention defines a double-channel air curtain channel by designing a recessed groove on the bumper that is recessed toward the air curtain channel, thereby improving the ability to reduce wind resistance, while avoiding the see-through and light transmission problems caused by the traditional single-channel air curtain structure, and also providing an installation position for monitoring equipment such as radar, thereby improving the safety of the vehicle.

[0004] The present invention also provides a vehicle comprising the air curtain assembly.

[0005] According to the present invention, the air curtain assembly includes a bumper, a wheel arch guard plate and an air curtain body; the air curtain body is arranged on the inner side of the bumper and extends to the wheel arch guard plate, and the air curtain body is at least partially spaced from the bumper to form an air curtain channel; wherein a sink groove is formed on the bumper, a radar installation position is formed on the bottom wall of the sink groove, the sink groove is recessed toward the air curtain channel and separates at least part of the air curtain channel into a first airflow channel and a second airflow channel.

[0006] According to the air curtain assembly of the present invention, the air curtain body is arranged on the inner side of the bumper. The air curtain body and the bumper can define an air curtain channel after being matched. The air curtain channel extends in the front and rear directions of the vehicle. When the vehicle is driving, the airflow in front of the vehicle can flow along the air curtain channel, thereby reducing wind resistance. The air curtain assembly is designed with a groove on the bumper, and the groove is recessed toward the inside of the air curtain channel. The recessed groove separates the first airflow channel and the second airflow channel in the air curtain channel, which was originally a single-channel, so that the air curtain channel forms a double-channel design. This double-channel design helps to guide and manage the airflow more effectively. The airflow in front of the vehicle can flow out along the first airflow channel and the second airflow channel respectively after entering the airflow channel. Compared with the traditional single-channel air curtain structure, the air curtain assembly of the present invention divides the airflow in the air curtain channel into two through a double-channel design, which reduces wind resistance and solves the see-through and light transmission problems caused by the large air curtain inlet and outlet areas. For example, the air curtain channel of the present invention has two airflow flow paths, the first airflow channel and the second airflow channel. At the outlet of the air curtain channel, different airflow outlets can be set according to the two airflow paths. While ensuring the reduction of wind resistance, it can avoid the need to increase the cross-sectional area of ​​the airflow outlet in the traditional single-channel air curtain structure, thereby reducing the see-through and light transmission problems caused by the large cross-sectional area of ​​the air curtain assembly outlet, thereby improving the aesthetics of the vehicle.

[0007] The design of the sink not only forms a dual channel, but also the bottom wall of the sink forms a radar installation position. During assembly, radar and other monitoring equipment can be installed in the sink, so that the radar is isolated from the airflow in the air curtain channel, which can protect the radar monitoring equipment from the influence of high-speed airflow, extend the service life of the radar, and ensure the accuracy of the signal, improving the safety of the vehicle.

[0008] According to one embodiment of the present invention, an air inlet connected to the air curtain channel is formed on the bumper; a first air outlet and a second air outlet spaced apart from each other are formed on the wheel arch guard plate, the first air outlet is connected to the first air flow channel, and the second air outlet is connected to the second air flow channel.

[0009] According to an embodiment of the present invention, the sum of the cross-sectional area of ​​the first air outlet and the cross-sectional area of ​​the second air outlet is greater than the cross-sectional area of ​​the air inlet.

[0010] According to an embodiment of the present invention, at least one of the air inlet, the first air outlet and the second air outlet is provided with a light shielding rib.

[0011] According to one embodiment of the present invention, the air curtain body includes: a bottom plate, a first side plate and a second side plate, the bottom plate extends along the length direction of the vehicle body and is spaced from the inner surface of the bumper; the first side plate is arranged on one side of the bottom plate in the height direction of the vehicle body and connects the bottom plate to the inner surface of the bumper; the second side plate is arranged on the other side of the bottom plate in the height direction of the vehicle body and connects the bottom plate to the inner surface of the bumper; wherein the bottom plate, the first side plate, the second side plate and the bumper jointly define the air curtain channel.

[0012] According to an embodiment of the present invention, a first clamping portion is disposed on the first side panel and the second side panel, and a second clamping portion cooperating with the first clamping portion is disposed on the inner side of the bumper.

[0013] According to an embodiment of the present invention, connecting ribs respectively connected to the bottom plate and the bumper are provided in the air curtain channel.

[0014] According to an embodiment of the present invention, a sealing member is provided between the first side panel and the bumper and / or between the second side panel and the bumper.

[0015] According to an embodiment of the present invention, a surface of the bumper facing away from the air curtain body is provided with sound-absorbing cotton.

[0016] The vehicle according to the present invention will be briefly described below.

[0017] The vehicle according to the present invention includes the air curtain assembly in the above embodiment. Since the vehicle according to the present invention is provided with the air curtain assembly in the above embodiment, the air curtain assembly can guide the airflow through its own dual-channel design, thereby improving the ability to reduce wind resistance, and can avoid the see-through and light transmission problems of the air curtain channel caused by increasing the airflow inlet and outlet area in order to improve the ability to reduce wind resistance in the traditional single-channel, thereby improving the aesthetics of the vehicle. At the same time, it also provides an installation position for monitoring equipment such as the vehicle's radar, thereby preventing the airflow in the air curtain channel from directly impacting the radar, thereby improving the safety of the vehicle.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of an air curtain assembly according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of a wheel cover according to an embodiment of the present invention;

[0022] Figure 3 is a front view of an air curtain assembly according to one embodiment of the present invention;

[0023] Figure 4 is based on Figure 3 Sectional view of AA in the middle;

[0024] Figure 5 is a schematic diagram of an air curtain channel according to an embodiment of the present invention;

[0025] Figure 6 1 is a schematic diagram of an air curtain body and a bumper according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] Air curtain assembly 1;

[0028] Bumper 11;

[0029] Wheel housing guard 12;

[0030] The air curtain body 13, the bottom plate 131, the first side plate 132, and the second side plate 133;

[0031] Sink 14;

[0032] Air curtain channel 15, first air flow channel 151, second air flow channel 152;

[0033] An air inlet 161, a first air outlet 162, and a second air outlet 163;

[0034] A first clamping portion 171 and a second clamping portion 172;

[0035] Shading ribs 181, sealing member 182;

[0036] Radar installation position 191, radar 192. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] The traditional bumper air curtain structure is a thin and long single channel. In order to enhance the air curtain structure's effect of reducing wind resistance, the cross-sectional area of ​​the air curtain's inlet and outlet needs to be as large as possible. However, this air curtain channel is prone to cause defects in the vehicle's appearance, and the air curtain's outlet and inlet will cause large-area appearance see-through and light leakage problems. In addition, radar and other monitoring equipment arranged on the outside of the bumper are often in the air curtain channel. Rapid airflow will not only affect the accuracy of the signal, but also accelerate the speed of equipment damage, affecting the service life of the monitoring equipment.

[0039] Reference below Figure 1-Figure 6 A curtain airbag assembly according to an embodiment of the present invention is described.

[0040] The air curtain assembly 1 according to the present invention includes a bumper 11, a wheel arch guard plate 12 and an air curtain body 13; the air curtain body 13 is arranged on the inner side of the bumper 11 and extends to the wheel arch guard plate 12, and the air curtain body 13 is at least partially spaced from the bumper 11 to form an air curtain channel 15; wherein a depression 14 is formed on the bumper 11, and a radar mounting position 191 is formed on the bottom wall of the depression 14, and the depression 14 is recessed toward the air curtain channel 15 and separates at least part of the air curtain channel 15 into a first airflow channel 151 and a second airflow channel 152.

[0041] According to the air curtain assembly 1 of the present invention, the air curtain body 13 is arranged on the inner side of the bumper 11. The air curtain body 13 and the bumper 11 can define an air curtain channel 15 after being matched. The air curtain channel 15 extends in the front-rear direction of the vehicle. When the vehicle is driving, the airflow in front of the vehicle can flow along the air curtain channel 15, thereby reducing wind resistance. The air curtain assembly 1 is designed with a groove 14 on the bumper 11, and the groove 14 is recessed toward the inside of the air curtain channel 15. The recessed groove 14 separates the first airflow channel 151 and the second airflow channel 152 in the air curtain channel 15, which was originally a single-channel, so that the air curtain channel 15 forms a dual-channel design. This dual-channel design helps to guide and manage the airflow more effectively. After the airflow in front of the vehicle enters the airflow channel, it can flow out along the first airflow channel 151 and the second airflow channel 152 respectively. Compared with the traditional single-channel air curtain structure, the air curtain assembly 1 of the present invention uses a dual-channel design to guide the air The airflow in the curtain channel 15 is divided into two, which reduces wind resistance while also solving the see-through and light transmission problems caused by the excessively large air curtain inlet and outlet areas. For example, the air curtain channel 15 of the present invention has two airflow paths, a first airflow channel 151 and a second airflow channel 152. At the outlet of the air curtain channel 15, different airflow outlets can be set according to the two airflow paths. While ensuring the reduction of wind resistance, it can avoid the need to increase the cross-sectional area of ​​the airflow outlet in the traditional single-channel air curtain structure, thereby reducing the see-through and light transmission problems caused by the excessively large outlet cross-sectional area of ​​the air curtain assembly 1, thereby improving the aesthetics of the vehicle.

[0042] The design of the sink 14 not only forms a double channel, but also the bottom wall of the sink 14 forms a radar installation position 191. During assembly, monitoring equipment such as the radar 192 can be installed in the sink 14, so that the radar 192 is isolated from the airflow in the air curtain channel 15, which can protect the radar 192 monitoring equipment from the influence of high-speed airflow, extend the service life of the radar 192, and at the same time ensure the accuracy of the signal and improve the safety of the vehicle.

[0043] According to one embodiment of the present invention, an air inlet 161 connected to the air curtain channel 15 is formed on the bumper 11; a first air outlet 162 and a second air outlet 163 are formed on the wheel housing guard plate 12, and the first air outlet 162 is connected to the first air flow channel 151, and the second air outlet 163 is connected to the second air flow channel 152. The air inlet 161 formed on the bumper 11 and the first air outlet 162 and the second air outlet 163 formed on the wheel housing guard plate 12 of the air curtain assembly 1 realize the effective connection between the air curtain channel 15 and the external environment. Specifically, the airflow in front of the vehicle can smoothly enter the air curtain channel 15 from the air inlet 161, and after being divided by the first air flow channel 151 and the second air flow channel 152, it flows out from the first air outlet 162 and the second air outlet 163 respectively, and the airflow is more evenly guided and dispersed, reducing the formation of vortices and turbulence, thereby reducing air resistance.

[0044] According to one embodiment of the present invention, the sum of the cross-sectional area of ​​the first air outlet 162 and the cross-sectional area of ​​the second air outlet 163 is greater than the cross-sectional area of ​​the air inlet 161. Since the total cross-sectional area of ​​the two air outlets is greater than the cross-sectional area of ​​the air inlet 161, when the gas enters from the air inlet 161 and is released through the air outlet, the airflow will be more effectively dispersed. At the same time, the larger air outlet area can provide a stronger airflow output, increase the speed of the airflow flowing in the air curtain channel 15, improve the drainage effect of the air curtain assembly 1, and thus improve the ability of the air curtain assembly 1 to reduce wind resistance.

[0045] According to one embodiment of the present invention, at least one of the air inlet 161, the first air outlet 162, and the second air outlet 163 is provided with a shading rib 181. During actual assembly, the shading rib 181 can be added to the three air flow locations of the air inlet 161, the first air outlet 162, and the second air outlet 163. The shading rib 181 can be horizontal, that is, extending in the width direction of the vehicle. The main function of the shading rib 181 is to provide visual shielding, so that the structure inside the air curtain channel 15 cannot be directly seen from the outside, which can avoid the problems of see-through and light transmission of the air flow inlet and outlet in the traditional air curtain structure, and help to keep the appearance of the vehicle neat and beautiful. At the same time, the shading rib 181 can also enhance the strength and rigidity of the air inlet 161, the first air outlet 162, and the second air outlet 163, so that the air curtain assembly 1 can resist external impact and vibration, and improve the durability and service life of the air curtain assembly 1.

[0046] According to one embodiment of the present invention, the air curtain body 13 includes: a bottom plate 131, a first side plate 132, and a second side plate 133. The bottom plate 131 extends along the length direction of the vehicle body and is spaced from the inner surface of the bumper 11; the first side plate 132 is arranged on one side of the bottom plate 131 in the height direction of the vehicle body and connects the bottom plate 131 with the inner surface of the bumper 11; the second side plate 133 is arranged on the other side of the bottom plate 131 in the height direction of the vehicle body and connects the bottom plate 131 with the inner surface of the bumper 11; wherein the bottom plate 131, the first side plate 132, the second side plate 133 and the bumper 11 together define the air curtain channel 15. Figure 6 As shown, the bottom plate 131, the first side plate 132 and the second side plate 133 form a groove that opens toward the inside of the bumper 11, and the bumper 11 closes the opening of the groove, thereby defining the air curtain channel 15, forming a stable structure, and improving the structural strength of the air curtain channel 15. The bottom plate 131 extends along the length direction of the vehicle body, so that the air curtain channel 15 can guide the airflow to flow in the length direction of the vehicle body, thereby reducing the wind resistance of the vehicle forward. The first side plate 132 and the second side plate 133 are respectively connected to the inner surface of the bumper 11, thereby increasing the connection length between the air curtain body 13 and the bumper 11, improving the stability of the connection between the air curtain body 13 and the bumper 11, and thereby improving the stability of the air curtain channel 15.

[0047] According to one embodiment of the present invention, a first clamping portion 171 is provided on the first side plate 132 and the second side plate 133, and a second clamping portion 172 cooperating with the first clamping portion 171 is provided on the inner side of the bumper 11. The connection mode of the air curtain body 13 and the bumper 11 can be a clamping match, for example: the first clamping portion 171 can be provided on the first side plate 132 and the second side plate 133 respectively, and the second clamping portion 172 can be provided on the bumper 11. During assembly, the connection between the bumper 11 and the air curtain body 13 can be achieved through the clamping match of the first clamping portion 171 and the second clamping portion 172. The clamping mode of the two clamping portions not only improves the stability of the connection between the air curtain body 13 and the bumper 11, but also improves the overall assembly efficiency.

[0048] In addition, the bumper 11 and the air curtain body 13 may be connected and matched by screwing or welding.

[0049] According to one embodiment of the present invention, connecting ribs are provided in the air curtain channel 15, which are respectively connected to the bottom plate 131 and the bumper 11. The connecting ribs can be simply understood as transverse ribs extending in the width direction of the vehicle, and the two ends of the connecting ribs are respectively connected to the inner side of the bumper 11 and the side of the bottom plate 131 facing the bumper 11. The provision of the connecting ribs significantly enhances the structural stability of the air curtain channel 15. The bottom plate 131 and the bumper 11 are respectively connected by the connecting ribs, forming a more solid support network, which can effectively resist external impact and vibration, improve the overall strength and rigidity of the air curtain assembly 1, extend the service life of the air curtain assembly 1, reduce the frequency of repair and replacement, and reduce maintenance costs.

[0050] In some embodiments, the connecting ribs may be configured to be a plurality of connecting ribs spaced apart from each other in the air curtain channel 15 .

[0051] According to one embodiment of the present invention, a seal 182 is provided between the first side plate 132 and the bumper 11 and / or between the second side plate 133 and the bumper 11. The air curtain body 13 is connected to the bumper 11 through the first side plate 132 and the second side plate 133. During assembly, seals 182 (such as sealing sponges) can be provided at the connection between the first side plate 132 and the bumper 11 and at the connection between the second side plate 133 and the bumper 11, respectively. The provision of the seal 182 can enhance the sealing between the air curtain assembly 1 and the bumper 11, thereby improving the sealing performance of the air curtain channel 15, so that the airflow can be discharged normally after passing through the drainage of the air curtain channel 15, thereby ensuring the function of the air curtain assembly 1 to reduce wind resistance.

[0052] According to one embodiment of the present invention, a surface of the bumper 11 facing away from the air curtain body 13 is provided with sound-absorbing cotton. The provision of the sound-absorbing cotton significantly enhances the noise absorption capacity of the bumper 11. The sound-absorbing cotton can effectively absorb external noise such as wind noise generated during the driving of the vehicle, reduce the interference of noise to passengers inside the vehicle, and improve the riding comfort of the vehicle. At the same time, the sound-absorbing cotton also has a certain vibration reduction function, that is, the sound-absorbing cotton itself has a certain vibration absorption capacity, which can absorb part of the vibration of the bumper 11 and its surrounding components, and improve the driving stability of the vehicle.

[0053] The vehicle according to the present invention will be briefly described below.

[0054] The vehicle according to the present invention includes the air curtain assembly 1 in the above embodiment. Since the vehicle according to the present invention is provided with the air curtain assembly 1 in the above embodiment, the air curtain assembly 1 can guide the airflow through its own dual-channel design, thereby improving the ability to reduce wind resistance, and can avoid the see-through and light transmission problems of the air curtain channel 15 caused by increasing the airflow inlet and outlet area in order to improve the ability to reduce wind resistance in the traditional single channel, thereby improving the aesthetics of the vehicle. At the same time, it also provides an installation position for monitoring equipment such as the radar 192 of the vehicle, thereby avoiding the airflow in the air curtain channel 15 from directly impacting the radar 192, thereby improving the safety of the vehicle.

[0055] Description of the drawings: It should be noted that Figure 6 It is only used to illustrate the coordination between the bumper 11 and the air curtain body 13 and is not an actual structure.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0058] In the description of the present invention, "plurality" means two or more.

[0059] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0060] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air curtain assembly, characterized in that: include: Bumper (11) and wheel housing guard (12); An air curtain body (13), the air curtain body (13) being arranged on the inner side of the bumper (11) and extending to the wheel cover guard plate (12), the air curtain body (13) being spaced apart from at least a portion of the bumper (11) to form an air curtain channel (15); wherein A recessed groove (14) is formed on the bumper (11), a radar installation position (191) is formed on the bottom wall of the recessed groove (14), and the recessed groove (14) is recessed toward the air curtain channel (15) and divides at least part of the air curtain channel (15) into a first airflow channel (151) and a second airflow channel (152).

2. The air curtain assembly according to claim 1, characterized in that: The bumper (11) is provided with an air inlet (161) connected to the air curtain channel (15); the wheel arch guard plate (12) is provided with a first air outlet (162) and a second air outlet (163) spaced apart from each other, the first air outlet (162) being connected to the first air flow channel (151), and the second air outlet (163) being connected to the second air flow channel (152).

3. The air curtain assembly according to claim 2, characterized in that: The sum of the cross-sectional area of ​​the first air outlet (162) and the cross-sectional area of ​​the second air outlet (163) is greater than the cross-sectional area of ​​the air inlet (161).

4. The air curtain assembly according to claim 3, characterized in that: At least one of the air inlet (161), the first air outlet (162) and the second air outlet (163) is provided with a light shielding rib (181).

5. The air curtain assembly according to claim 1, characterized in that: The air curtain body (13) comprises: A bottom plate (131), the bottom plate (131) extending along the length direction of the vehicle body and spaced apart from the inner surface of the bumper (11); A first side plate (132), the first side plate (132) being arranged on one side of the bottom plate (131) in the vehicle body height direction and connecting the bottom plate (131) to the inner side surface of the bumper (11); a second side plate (133), the second side plate (133) being arranged on the other side of the bottom plate (131) in the vehicle body height direction and connecting the bottom plate (131) to the inner side surface of the bumper (11); The bottom plate (131), the first side plate (132), the second side plate (133) and the bumper (11) jointly define the air curtain channel (15).

6. The air curtain assembly according to claim 5, characterized in that: The first side plate (132) and the second side plate (133) are provided with a first clamping portion (172), and the inner side of the bumper (11) is provided with a second clamping portion (173) that cooperates with the first clamping portion (172).

7. The air curtain assembly according to claim 5, characterized in that: Connecting ribs are provided in the air curtain channel (15) and are respectively connected to the bottom plate (131) and the bumper (11).

8. The air curtain assembly according to claim 5, characterized in that: A sealing member (182) is provided between the first side plate (132) and the bumper (11) and / or between the second side plate (133) and the bumper (11).

9. The air curtain assembly according to claim 1, characterized in that: A surface of the bumper (11) on one side facing away from the air curtain body (13) is provided with sound-absorbing cotton.

10. A vehicle, characterized in that: The invention comprises an air curtain assembly as described in any one of claims 1 to 9.

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