Air vent with adjustable air outlet direction

Abstract

Air outlet (10) with adjustable air outlet direction (9), with a flow channel (1) having an air inlet opening (2) and an air outlet opening (3) substantially opposite the air inlet opening (2), wherein an airflow (15) can enter the flow channel (1) through the air inlet opening (2) and exit through the air outlet opening (3), with at least one first lamella (5) pivotable about a first pivot axis (4) relative to the flow channel (1) for guiding the airflow (15) and with at least one second lamella (7) pivotable relative to the flow channel (1), the second pivot axis (6) of which is inclined or perpendicular to the first pivot axis (4), wherein a single drive and a coupling device (12) are provided for independent adjustment of the lamellae (5, 7), characterized in thatthat the coupling device (12) has a rotatably mounted cam disk (14) operatively connected to the drive, with a first control cam (16) for setting different positions of the first slats (5) and with a second control cam (17) for setting different positions of the second slats (7), wherein one of the control cams (16, 17) is formed on an end face or top or base surface (22) of the cam disk (14) and the other control cam (17, 16) is formed on the lateral surface (23) of the cam disk (14).

Description

The invention relates to an air outlet, also called a fresh air grill, with adjustable air outlet direction according to the preamble of claim 1. Air vents can be used, for example, in vehicles, especially motor vehicles, and generally serve to regulate the airflow exiting an air outlet in a horizontal and / or vertical direction. The air vent can, for example, be located in the instrument panel of a motor vehicle. Besides the vehicle sector, such air outlets could also be used in fans, air conditioning systems, for example in buildings or other areas where the airflow can be specifically adjusted. Various devices and methods for adjusting airflow are known in the prior art. In known air outlets, vertically and horizontally oriented air guide elements or louvers can be arranged one behind the other. Typically, an adjustment mechanism allows both the horizontally oriented and the vertically oriented louvers to be pivoted separately or together to adjust the direction of the outgoing air. From DE 10 2021 119 416 A1, a control mechanism for a kinematic system in the vehicle interior is known. The control mechanism comprises a base body, a control cam, and at least two output elements. A cam element with two degrees of freedom relative to the base body is guided through the control cam by alternating movements in two opposite directions of the first degree of freedom, thereby successively coming into contact with the first and / or the second output element. To simplify the design of such a control mechanism, it is proposed that rotational movements be used instead of translational movements. DE 10 2021 106 582 A1 describes a drive device for the independent control of at least two devices by means of a single drive unit, comprising at least one drive unit, a first transmission unit, at least one first guide element, and a first stationary control element, which has a first cam arrangement with a switching cam. The at least one first guide element is displaceable via the first transmission unit by the drive unit within the switching cam of the first cam arrangement, wherein at least one guide track is provided in the switching cam for each device to be controlled, in which at least one second guide element is arranged.The second guide elements are connected to first transmission elements rotatably mounted on the first stationary control element, which can be set into rotation according to the displacement of the at least one first guide element via the second guide elements, wherein the first transmission elements are each connected or connectable to the devices assigned to them. For example, an air outlet for a motor vehicle is also known from DE 10 2018 005 002 A1. DE 10 2015 101 254 B3 relates to a drive device for adjusting at least two devices. From DE 10 2020 101 678 A1, an actuating device for changing a mass flow in a motor vehicle is known. The KR 10 2007 0 034 793 A also concerns an air outlet for a motor vehicle. From EP 3 192 684 A1 a device for adjusting pivotable louvers of an air outlet which are arranged essentially perpendicular to each other is known. A disadvantage of the known air vents is their complex design with its elaborate kinematics. Based on the disadvantages described above, the invention aims to provide an improved air outlet that has a simple design and allows for particularly convenient pivoting of the louvers in a space-saving and cost-effective manner. This problem is solved with an air outlet according to claim 1. Advantageous embodiments and further developments of the invention can be found in the dependent claims. The invention relates to an air outlet with adjustable air outlet direction, with a flow channel having an air inlet opening and an air outlet opening substantially opposite the air inlet opening. The air outlet is also referred to as a nozzle or air nozzle, whereby the flow channel does not necessarily have to have the shape of a classic nozzle with a narrowing flow cross-section. In particular, it is possible to deflect the air jet in both the vertical and horizontal directions using a single actuator when the air outlet is installed. An airflow can enter the flow channel through the air inlet opening and exit through the air outlet opening. Furthermore, at least one first lamella, for example a horizontal lamella, which can be pivoted about a first pivot axis relative to the flow channel, is provided for guiding the airflow, and at least one second lamella, for example a vertical lamella, which can be pivoted relative to the flow channel, is provided, the second pivot axis of which runs obliquely or perpendicular to the first pivot axis. This means in particular that the first pivot axis runs perpendicular to an imaginary or virtual plane, while the second pivot axis runs obliquely or parallel to the plane or lies in the plane. The at least one first lamella is pivotable, for example, in a first pivoting range between two end positions that define the pivoting range. The at least one second lamella is pivotable, for example, in a second pivoting range about the second pivoting axis relative to the flow channel between two end positions. For independent adjustment of the slats, a single drive, preferably electric or manual, and a coupling device are provided. The drive can preferably be designed as an electric actuator or an electrically operated actuator, for example, as an electric motor. Alternatively, it can also be designed as a manually operated knurled wheel, lever, sliding lever, or rack and pinion. In other words, both the at least one first slat and the at least one second slat can be pivoted around the respective pivot axes by means of the drive and thus, for example, electrically or by electric motor, so that the slats, which are preferably inherently rigid or dimensionally stable, can be adjusted, i.e., pivoted, particularly conveniently and especially automatically, for example by means of a control system or regulation. Since the first louver and the second louver, or the rows of louvers, can be driven and thus pivoted via the coupling device, and since the louvers can be pivoted relative to each other via the coupling device, different air outlet directions can be set, into which the air can flow out of the flow channel and, for example, into the interior of the vehicle or into a building. According to the invention, the coupling device comprises a rotatably mounted cam disk operatively connected to the drive, with a first control cam for setting different positions of the first slats and a second control cam for setting different positions of the second slats, wherein one of the control cams is formed on an end face or top or base surface of the cam disk and the other control cam is formed on the lateral surface of the cam disk. It is conceivable that the drive acts directly, i.e., immediately, on the cam disk. Due to the large curve length of the control curves, a finer adjustment of the air outlet opening is possible. The airflow exiting the air outlet, particularly from the flow channel, is directed or deflected by means of the louvers in a particularly advantageous and, in particular, demand-oriented manner. The air outlet according to the invention enables the realization of a nozzle kinematics which has a particularly simple and therefore space-saving and cost-effective design and at the same time enables a particularly advantageous deflection of the airflow exiting the air outlet. In this way, effective and targeted airflow control is achieved with just a few components. This also allows for precise maintenance of specific louver positions. According to a first advantageous embodiment of the invention, a first control lever coupled to the first lamellae has a first guide pin which can be displaced in the first control curve to pivot the first lamellae about the first pivot axis relative to the flow channel. Alternatively or additionally, it can be provided that a second control lever coupled to the second lamellae has a second guide pin which can be displaced in the second control cam for pivoting the second lamellae about the second pivot axis relative to the flow channel, wherein, in the event of a rotation of the cam disk caused by the drive, the guide pins coupled to the control levers are displaced in the respective control cams in such a way that both the first and the second lamellae can be adjusted independently of each other by means of a single drive. Although the first and second slats are mechanically coupled to the single drive via the coupling device, the shape of the control cams allows them to be adjusted independently. For example, the first slat can be pivoted while the second slat remains in one position. This is achieved through a so-called free play in the control cam, during which the slat's position does not change. In this way, a simple mechanical coupling of the slats with the corresponding control levers and the respective control cam is achieved. The guide pins are displaced within the two control cams when the cam disk moves or rotates, so that the control levers coupled to the guide pins are also moved accordingly. Consequently, the slats coupled to the control levers are also moved according to the displacement of the guide pins within the control cams. The control cams actuate the first and second slats simultaneously and independently of each other in a specific or predetermined relationship. To achieve particularly simple and precise adjustment, according to an advantageous embodiment of the invention, at least one of the control levers is pivotably mounted by means of a bearing, so that when the corresponding guide pin is moved within the respective control cam, the control lever and the louvers coupled to it pivot. In this way, the movement of the guide pins within the control cams, and thus the movement of the control levers, is implemented with particular efficiency and reliability. The bearing can be provided on a housing part of the air outlet that receives the louvers, so that the control lever (and the louvers) is pivotably mounted relative to this housing part. In a particularly advantageous embodiment of the invention, it is provided that by means of the cam disk driven by the drive, one of the first or second lamellae can be pivoted about its pivot axis relative to the flow channel and relative to the other lamella, while a pivoting of the other lamella about its pivot axis relative to the flow channel and caused by the drive is omitted. This means in particular that, for example, the first lamella can be pivoted around the first pivot axis relative to the flow channel by means of the drive, while a pivoting of the second lamella around the flow channel by means of the drive and around the second pivot axis does not occur. Alternatively or additionally, it is conceivable that the second lamella can be pivoted around the second pivot axis relative to the flow channel by means of the drive, while a pivoting of the first lamella around the first pivot axis by means of the drive does not occur. This allows the airflow to be guided or directed particularly advantageously by means of the louvers, even though the louvers can be coupled or connected to the single drive common to the louvers via the coupling device. Since both the at least one first lamella and the at least one second lamella can be pivoted by means of the one drive common to the lamellae, the number of parts, the installation space requirement, the weight and the cost of the air outlet can be kept within a particularly low range. Of course, in accordance with the invention, it is also conceivable that the lamellae can be pivoted together or simultaneously around the pivot axes relative to the flow channel, for example by means of the drive via the coupling device. According to an advantageous embodiment of the invention, at least one of the control levers has a flexible end which is coupled to a driver provided on the lamellae, and in particular can be attached to the driver. It has proven particularly advantageous that the flexible end of at least one control lever has clamping areas for receiving the driver, which are pre-tensioned against each other in the assembly position by means of a spring element. The spring element creates a spring-loaded connection between the control lever and the louvers. This prevents damage to the kinematics and drive mechanism in the event of unintended manual intervention directly affecting the louvers due to improper use, such as manually adjusting the louvers by a user (i.e., by touching and moving them). This also applies to inserting or removing fragrance containers, smartphone holders, or similar items from the air outlet louvers. The spring-loaded connection of the control lever to the louvers ensures a degree of play without causing damage to the kinematics. Due to the spring-loaded coupling, the slats can be moved manually to a certain extent if used improperly. However, damage to the control levers, guide pins, control cams, and drive mechanism is prevented by the spring coupling. To minimize the installation space required, the cost, and the weight of the air outlet, a further embodiment of the invention provides that an output shaft of the drive unit drives an output gear coupled to the cam disc for adjusting the vanes. The cam disc and the output gear can also be formed as a single unit. Alternatively, the drive unit can directly drive the cam disc, meaning no output gear is required, resulting in an even more compact design. In a particularly advantageous embodiment of the invention, the cam disc is arranged laterally on the air outlet in the assembly state; in particular, a drive shaft of the cam disc is aligned at an angle, preferably perpendicular to an output shaft of the drive. It is also conceivable that the cam disc, in its assembled state, is arranged above or below the air outlet, and in particular that a drive shaft of the cam disc is aligned essentially parallel to an output shaft of the drive. It is also conceivable that the cam disc is arranged laterally on a housing of the air outlet. The cam disc can be arranged inside or outside the flow channel. In a particularly advantageous embodiment of the invention, the drive, in particular an electric motor or manual drive, acts directly on the drive shaft of the cam disc; in particular, the drive shaft is designed to be received into the drive, especially by being pluggable. Alternatively, it is conceivable that an output shaft of the drive is received into the cam disc, especially by being pluggable. In this way, the necessary components are further reduced, since the drive is coupled to the cam disc via only a single shaft. The cam disc can be made of plastic, particularly a low-friction plastic, or metal, and / or have a diameter of approximately 30 mm to approximately 60 mm, preferably approximately 40 mm to approximately 50 mm. This design keeps the installation space requirements, costs, and weight of the air outlet particularly low. According to an advantageous embodiment of the invention, several first lamellae and / or several second lamellae are coupled together for synchronous movement. The first lamella, for example, belongs to a first row of lamellae, which may include the first lamella as well as further lamellae or at least one further lamella. The lamellae of the first row of lamellae are arranged, for example, consecutively or one behind the other along a particularly straight first direction, whereby the preceding and following descriptions of the first lamella can readily be applied to the other, further lamellae of the first row of lamellae and vice versa. Alternatively or additionally, at least one second lamella can belong to a second row of lamellae, which may include the second lamella as well as several further lamellae or at least one further lamella. The lamellae of the second row of lamellae are, for example, arranged consecutively or one behind the other along a second direction that runs obliquely or perpendicularly to the first direction and, in particular, is straight, whereby the preceding and following descriptions of the second lamella can readily be applied to the other, further lamellae of the second row of lamellae and vice versa. Further objectives, advantages, features, and applications of the present invention will become apparent from the following description of an exemplary embodiment with reference to the drawing. All features described and / or illustrated, individually or in any meaningful combination, constitute the subject matter of the present invention, even independently of their compilation in the claims or their cross-references. The figures show, in part schematically: Fig. 1 an air outlet with adjustable air outlet direction and a cam disc in perspective view, Fig. 2 the air outlet according to Fig. 1 in another perspective view, Fig. 3 a detail view of the air outlet according to Fig. 2 and Fig. 4 another detail view of the air outlet. Identical or equivalent components are identified in the following figures of the drawing by reference numerals based on an embodiment, in order to improve readability. Fig. 1 shows an air outlet 10 with adjustable air outlet direction 9 in a perspective view. Also visible is a flow channel 1, which has an air inlet opening 2 and an air outlet opening 3 that is substantially opposite the air inlet opening 2. Fig. 2 shows the air outlet 10 according to Fig. 1 in a further perspective view, where a drive housing and a front panel have been hidden for better clarity. Figures 3 and 4 show detailed views of the air outlet. An airflow 15 flows into the flow channel 1 through the air inlet opening 2 and out through the air outlet opening 3 (see Fig. 1 ). Figure 1 also shows several first lamellae 5, pivotable about a first pivot axis 4 relative to the flow channel 1, for guiding the airflow 15. These lamellae 5 can also be referred to as horizontal lamellae. Also visible, particularly in Fig. 2, are several second lamellae 7 that can be pivoted relative to the flow channel 1, the second pivot axis 6 of which runs approximately perpendicular to the first pivot axis 4 of the first lamellae 5. These lamellae 7 can be referred to as vertical lamellae in the present embodiment. In other words, the first pivot axis 4 runs perpendicular to an imaginary or virtual plane, with the second pivot axis 6 running approximately parallel to or lying in the plane. In the present embodiment according to Fig. 1, Fig. 2, Fig. 3 to Fig. 4, several first lamellae 5 and / or several second lamellae 7 are coupled together for a respective synchronous movement. The first lamellae 5, for example, can be pivoted in a first pivoting range between two end positions that limit the pivoting range. The second lamellae 7 can also be pivoted in a second pivoting range around the second pivoting axis 6 relative to the flow channel 1 between two end positions. For independent adjustment of the slats 5, 7, a single, in this case electric motor, drive or actuator and a coupling device 12 are provided in the present embodiment. The drive, for example an electric motor, is not shown. However, a drive shaft 13 for coupling the drive is visible. A manual drive (not shown) is also conceivable, for example a manually operated knurled wheel, a lever, a sliding lever, or a pull or rack mechanism. In this way, both the first slats 5 and the second slats 7 can be pivoted around the respective pivot axes by means of the drive, so that the slats 5, 7, which are preferably inherently rigid or dimensionally stable, can be pivoted particularly conveniently and especially automatically, for example by means of a control system or controller. According to Fig. 1, the coupling device 12 has a rotatably mounted cam disk 14, operatively connected to the drive via the drive shaft 13, with a first control cam 16 for setting different positions of the first lamellae 5. Furthermore, the cam disk 14 has a second control cam 17 for setting different positions of the second lamellae 5, 7. As can be seen from Figures 1-4, one of the control cams 16, 17 is formed on an end face or top or base surface 22 of the cam disk 14, and the other control cam 17, 16 is formed on the lateral surface 23 of the cam disk 14. The control cams 16, 17 are therefore oriented approximately perpendicular to each other. The cam disc 14 can be made of plastic, in particular of low-friction plastic, or metal. It can have a diameter of approximately 30 mm to approximately 60 mm, preferably from approximately 40 mm to approximately 50 mm. As can be seen particularly from Figs. 3 and 4, the first 5 and / or second lamellae 7 are coupled to a respective control lever 18, 19 for actuating the lamellae 5, 7. In an embodiment not shown, at least one of the control levers 18, 19 can have a toothed connection between two lever arms of the control lever 18, 19, which can lead to a uniform force transmission. The first control lever 18 coupled to the first lamellae 5 has a first guide pin 24, which is displaced in the first control curve 16 to pivot the first lamellae 5 about the first pivot axis 4 relative to the flow channel 1 (see Fig. 4 ). In the selected embodiment, the second control lever 19 coupled to the second lamellae 7 has a second guide pin 25, which is displaced in the second control cam 17 to pivot the second lamellae 7 about the second pivot axis 6 relative to the flow channel 1. When the cam disk 14 is rotated by the drive, the guide pins 24, 25 coupled to the control levers 18, 19 are displaced in the respective control cams 16, 17 such that both the first 5 and the second lamellae 7 are adjusted independently of each other by means of a single drive. In other words, movement of the cam disc 14 by the drive causes independent adjustment of the first and second lamellae 5, 7. Although the first 5 and second slats 7 are mechanically coupled to the single drive via the coupling device 12, the shape of the control cams 16, 17 allows the first 5 and second slats 7 to be adjusted independently of each other. For example, the first slat 5 can be pivoted while the second slat 7 remains in one position. This can be achieved by a so-called free travel in the control cam, during which the position of the slat does not change. As further shown in Fig. 3, the first control lever 18 for adjusting the first (horizontal) lamellae 5 is pivotally mounted by means of a bearing 26, so that when the corresponding guide pin 24 is moved in the first control cam 16, the control lever 18 and the lamellae 5 coupled to it pivot. It is also conceivable that the second control lever 19 or both control levers 18, 19 are pivotally mounted by means of a bearing 26. The bearing 26 can be provided on a housing part of the air outlet 10 that receives the lamellae 5, 7, so that the control lever 18, 19 (and the lamellae 5, 7) is designed to pivot relative to this housing part. In particular, it is possible that by means of the cam disk 14 driven by the drive, one of the first or second lamellae 5, 7 is pivoted about its pivot axis 4, 6 relative to the flow channel 1 and relative to the other lamella 7, 5, while a pivoting of the other lamella 7, 5 about its pivot axis 6, 4 relative to the flow channel 1 and caused by the drive does not occur. The louvers 5, 7 can thus be moved independently of each other into numerous positions in order to create an airflow 15 in almost any desired direction. Different air outlet directions can therefore be set, allowing the airflow 15 to exit the flow channel 1 and, for example, flow into the interior of the vehicle or into a building. Of course, in accordance with the invention, it is also conceivable that the lamellae 5, 7, for example by means of the drive via the coupling device 12, are pivoted together or simultaneously about the pivot axes 4, 6 relative to the flow channel 1. In other words, movement of the cam disc 14 by the drive causes independent adjustment of the first and second lamellae 5, 7. In this way, a wide range of adjustment options is ensured. As can be seen particularly in Figures 3 and 4, the first control lever 18 has a flexible end 27 which is coupled to a driver 28 provided on the first (horizontal) lamellae 5. The end 27 can be attached to the driver 28. However, it is also conceivable that the second control lever 19 or both control levers 18, 19 have such an end. In particular, in the present embodiment it is provided that the flexible end 27 of the first control lever 18 has clamping areas 30 for receiving the driver 28 of the first lamellae 5, which are pre-tensioned against each other in the assembly position by means of a spring element 29. This spring element 29 provides a spring-loaded coupling of the first control lever 18 to the first slats 5. In this way, in the event of unwanted manual intervention directly affecting the slats due to improper use, such as manual adjustment of the slats by a user (i.e., by touching and moving the slats), damage to the kinematics and the drive is prevented. Because of the spring-loaded coupling, while the slats can be moved manually to a certain extent in the event of improper use, damage to the control lever 18, the guide pin 24, the control cam 16, and the drive is prevented by the spring coupling. In one embodiment (not shown), it is conceivable that an output shaft of the drive unit drives an output gear coupled to the cam disk 14 for adjusting the lamellae 5, 7. This cam disk and the output gear can also be formed as a single unit. Alternatively, the drive unit can directly drive the cam disk 14, i.e., no output gear is provided, resulting in an even more compact design. In the present case, the cam disk 14 is arranged laterally on a housing of the air outlet 10 in the assembled state shown in Figures 1-4. The drive preferably acts directly on the drive shaft 13 of the cam disk 14. The drive shaft 13 is then inserted into a corresponding receptacle on the drive. However, it is also conceivable that an output shaft of the drive can be received, and in particular inserted, into the cam disk 14. Reference symbol list 1 Flow channel 2 Air inlet opening 3 Air outlet opening 4 First pivot axis 5 First louver (horizontal) 6 Second pivot axis 7 Second louver (vertical) 9 Air outlet direction 10 Air outlet 12 Coupling device 13 Drive shaft (cam) 14 Cam 15 Airflow 16 First control cam (first louvers) 17 Second control cam (second louvers) 18 First control lever (first louvers) 19 Second control lever (second louvers) 22 End face / Top / Base surface 23 Circumferential surface 24 First guide pin 25 Second guide pin 26 Bearing 27 Flexible end of control lever 28 Louver drive 29 Spring element 30 Clamping area

Claims

Air outlet (10) with adjustable air outlet direction (9), with a flow channel (1) having an air inlet opening (2) and an air outlet opening (3) substantially opposite the air inlet opening (2), wherein an airflow (15) can enter the flow channel (1) through the air inlet opening (2) and exit through the air outlet opening (3), with at least one first lamella (5) pivotable about a first pivot axis (4) relative to the flow channel (1) for guiding the airflow (15) and with at least one second lamella (7) pivotable relative to the flow channel (1), the second pivot axis (6) of which is inclined or perpendicular to the first pivot axis (4), wherein a single drive and a coupling device (12) are provided for independent adjustment of the lamellae (5, 7), characterized in thatthat the coupling device (12) has a rotatably mounted cam disk (14) operatively connected to the drive, with a first control cam (16) for setting different positions of the first slats (5) and with a second control cam (17) for setting different positions of the second slats (7), wherein one of the control cams (16, 17) is formed on an end face or top or base surface (22) of the cam disk (14) and the other control cam (17, 16) is formed on the lateral surface (23) of the cam disk (14). Air outlet (10) according to claim 1, characterized in that a first control lever (18) coupled to the first louvers (5) has a first guide pin (24) which is displaceable in the first control cam (16) for pivoting the first louvers (5) about the first pivot axis (4) relative to the flow channel (1), and / or that a second control lever (19) coupled to the second louvers (7) has a second guide pin (25) which is displaceable in the second control cam (17) for pivoting the second louvers (7) about the second pivot axis (6) relative to the flow channel (1), wherein, in the event of a rotation of the cam disk (14) caused by the drive, the guide pins (24, 25) coupled to the control levers (18, 19) are displaced in the respective control cams (16, 17) such that both the first (5) and the second The slats (7) can be adjusted independently of each other by means of a single drive. Air outlet (10) according to claim 2, characterized in that at least one of the control levers (18, 19) is pivotably mounted by means of a bearing (26), so that when the corresponding guide pin (24, 25) is displaced in the respective control cam (16, 17) the control lever (18, 19) and the lamellae (5, 7) coupled to it pivot. Air outlet (10) according to one of the preceding claims, characterized in that by means of the cam disk (14) driven by the drive one of the first or second lamellae (5, 7) can be pivoted about its pivot axis (4, 6) relative to the flow channel (1) and relative to the other lamella (7, 5), while a pivoting of the other lamella (7, 5) about its pivot axis (6, 4) relative to the flow channel (1) and caused by the drive does not occur. Air outlet (10) according to one of claims 2 to 4, characterized in that at least one of the control levers (18, 19) has a flexible end (27) which is coupled to a driver (28) provided on the louvers (5, 7). Air outlet (10) according to claim 5, characterized in that the flexible end (27) of the at least one control lever (18, 19) has clamping areas (30) for receiving the driver (28), which are pre-tensioned against each other in the assembly position by means of a spring element (29). Air outlet (10) according to one of the preceding claims, characterized in that an output shaft of the drive drives an output gear coupled to the cam disk (14) for adjusting the lamellae (5, 7). Air outlet (10) according to one of the preceding claims, characterized in that the cam disk (14) is arranged laterally on the air outlet (10) in the assembly state. Air outlet (10) according to claim 8, characterized in that a drive shaft (13) of the cam disk (14) is aligned obliquely to an output shaft of the drive. Air outlet (10) according to claim 9, characterized in that the drive acts directly on the drive shaft (13) of the cam disk (14). Air outlet (10) according to claim 10, characterized in that the drive shaft (13) is designed to be pluggable into the drive or that an output shaft of the drive is pluggable into the cam disk (14). Air outlet (10) according to one of the preceding claims, characterized in that the cam disc (14) is made of plastic or metal and / or that the cam disc (14) has a diameter of approximately 30 mm to approximately 60 mm. Air outlet (10) according to one of the preceding claims, characterized in that several first lamellae (5) and / or several second lamellae (7) are coupled together for synchronous movement.

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