Cam transmission mechanism, driving unit with cam transmission mechanism and air outflow device

Abstract

The invention relates to an air outflow device (1) having a cam drive (10) with a drive element (14) which can be pivoted by means of a drive motor, the drive element, when pivoted in a first pivot direction (21) in a first pivot angle section, deflects the disks (4) of the first disk group of the air outflow device (1) by means of the first coupling element (11) and, when further pivoted in the first pivot direction (21) in a subsequent second pivot angle section, pivots the disks (4) back again. The drive element (14) deflects the discs (5) of the second disc group in a third pivot angle section during a reverse pivot in the second pivot direction (25) and pivots the discs back when the drive element (14) further pivots in the second pivot direction (25) via a fourth pivot angle section.

Description

TECHNICAL FIELD

[0001] The invention relates to a cam gear having the features of the preamble of claim 1 and to a drive unit and an air outlet with a cam gear having the features of the preambles of claims 13 and 14. BACKGROUND

[0002] The publication DE 10 2020 108 169 A1 discloses an air outlet for a heavy goods vehicle, which has a pivotable lamella as an air deflection element and a pivotable throttle flap as an air quantity control element, both of which are driven by a rotatable cam disc. The cam disc has a W-shaped control cam, into which a slide bolt is inserted, which slide bolt projects from a pivot lever of the lamella so that the lamella is pivoted when the control disc is turned. In order to pivot the throttle flap, the cam disc is turned so that an edge of the cam disc abuts against a slide bolt, which slide bolt projects from a pivot lever of the throttle flap so that the throttle flap is pivoted.

[0003] DE 10 2021 119 416 A1 describes a gear mechanism in which the drive element has a first scanner. However, the first scanner is a component part of the first coupling element and thus cannot scan the first deflection curve of the first coupling element. The first scanner scans the deflection curve (groove) of the drive. Furthermore, the first coupling element and also the drive can be pivoted about the same drive pivot axis D. The first coupling element is pivoted together with the drive. This movement of the first coupling element within the groove is purely translatory. SUMMARY

[0004] It is an object of the present invention to propose a cam gear for pivoting one or two air deflection elements or one air deflection element and one air quantity control element of an air outlet, in particular.

[0005] This object is achieved according to the invention by the features of claim 1.

[0006] The cam drive according to the application having the features of claim 1 has a drive element, which is pivotable about a pivot axis, which is referred to here as the drive pivot axis. Furthermore, the cam drive according to the application has a first coupling element, which is pivotable about a first pivot axis. In embodiments of the application, the cam drive can have one or more further coupling elements and / or pivot axes, but embodiments of the application are likewise feasible without further coupling elements and / or without further pivot axes. The purpose of the coupling elements is to transmit the pivoting movement of the drive element directly or indirectly to an arbitrary output element, wherein the output element can likewise be pivotable and / or convert the movement, and the output element can be pushable. The output element can be, for example, a pivotable air deflection element or a pivotable or pushable air quantity control element, such as a throttle flap or a throttle slide.

[0007] The drive element has a first scanner at a radial distance from the drive pivot axis, and the first coupling element has a first deflection curve, which is scanned by the first scanner of the drive element. There can be one or more further scanners and / or deflection curves, as in the case of the coupling elements, but this is not necessarily the case. "Scanning" refers to the movement of the scanner along the deflection curve, which transmits the pivoting movement of the drive element to the first coupling element.

[0008] When the drive element is pivoted about the drive pivot axis in a first pivoting direction in a first pivoting angle section, the first scanner of the drive element scans the first deflection curve of the first coupling element, starting from a pivoting position of the drive element and of the first coupling element, which is referred to here as the initial position. The first pivoting angle section can directly follow the initial position, or the drive element must be pivoted by a pivoting angle from its initial position until it reaches the first pivoting angle section. By scanning, i.e. the movement of the first scanner along the first deflection curve, the first scanner causes the first coupling element to be pivoted about the first pivot axis in a first deflection direction into a pivoting position, which is referred to here as the deflection position, by the first deflection curve. The pivoting movement of the drive element in the first pivoting direction in the first pivoting angle section is then transmitted to the first coupling element by the first scanner and the first deflection curve and causes the first coupling element to be deflected, wherein the pivoting angle and the pivoting speed of the first coupling element and of the drive element can be the same or different.

[0009] In addition to the first scanner, the drive element of the cam mechanism according to the application has a first return element which is radially spaced apart from the drive pivot axis, and the first coupling element has a first return curve. It is also possible here for one or more further return elements and / or return curves to be present, but this is not necessary. The return element in particular has a different spacing, in particular a greater spacing, from the drive pivot axis than the scanner. If the drive element is pivoted further in the first pivot direction in the second pivot angle section, the first return element scans the first return curve and, in doing so, pivots the first coupling element about the first pivot axis in a return direction which is arranged opposite the first deflection direction back into the initial position. According to the application, the first coupling element is thus pivoted from the deflected position back into its initial position by further pivoting of the drive element in the same direction in which it was pivoted in order to deflect the first coupling element.

[0010] The second pivot angle section can directly follow the first pivot angle section, or there can be a pivot angle spacing between the first pivot angle section and the second pivot angle section.

[0011] The drive element can be pivoted back into the initial position in a second pivot direction which is arranged opposite the first pivot direction. It is possible for the drive element to be further pivoted in the first pivot direction as well until it reaches its initial position again.

[0012] The dependent claims are subject matter of advantageous design solutions and improvements of the application as specified in claim 1.

[0013] The cam mechanism according to the application is preferably designed in such a way that, when the drive element is pivoted back about the drive pivot axis in a second pivot direction which is arranged opposite the first pivot direction via the first pivot angle section and the second pivot angle section, the drive element does not adjust the first coupling element. That is to say, when the drive element is pivoted back, the drive element does not move the first coupling element, but rather the first coupling element retains its pivoted position. This makes it possible to achieve the desired extent of deflection of the coupling element, and subsequently the drive element is pivoted back into the initial position without the deflected coupling element being pivoted.

[0014] A design variant of the application provides that, when the drive element is being transitioned from the first pivot angle section into the second pivot angle section, the first scanner disengages from the first deflection curve section of the first coupling element and avoids the coupling element by a movement transverse to the extension of the deflection curve section. The first scanner does not have to move precisely transverse to the extension of the deflection curve section, it is sufficient if the avoidance movement of the first scanner has a component transverse to the extension of the first deflection curve section. This design variant of the application makes it possible for the first coupling element to be pivoted back into the initial position without an abutment of the first scanner against the first coupling element or the first deflection curve section preventing the return pivoting of the first coupling element and preventing the reset.

[0015] In order to be able to avoid the first coupling element, the first scanner is resilient, in particular transversely resilient, or has a movement component transverse to the extension of the first deflection curve section in an embodiment of the application. The first scanner can also be resilient parallel to the drive pivot axis or parallel to the first pivot axis. The cam mechanism according to the application can have a spring element which loads the first scanner. A further possibility with regard to the resilient embodiment of the first scanner is for the first scanner to be arranged at a resilient element, wherein the resilient element can be the drive element or a part of the drive element, for example.

[0016] In order to be able to move the two output elements independently of one another with the drive element, an improved variant of the application provides a second coupling element which can be pivoted about a pivot axis which is referred to here as the second pivot axis. The second coupling element has a deflection curve section which is referred to here as the second deflection curve section and which is scanned by the drive element. To this end, the second coupling element is arranged relative to the drive element such that, when the second coupling element is in the initial position and the drive element is pivoted about the drive pivot axis in the second pivot direction, the drive element pivots the second coupling element about its, that is to say the second, pivot axis in the second deflection direction here. The drive element then scans the second deflection curve section, that is to say the drive element abuts against or enters into abutment with or in any case moves along the second deflection curve section and pivots the second coupling element into a deflection position. The drive element is pivoted in the second pivot direction in order to be pivoted back into the initial position, wherein the first coupling element is preferably not pivoted but remains in its pivoted position. This makes it possible to deflect the two coupling elements independently of one another by pivoting the drive element selectively in the first pivot direction or in the second pivot direction. The pivoted position of the drive element for pivoting the second coupling element can be the deflection position, the initial position or substantially any arbitrary pivoted position.

[0017] An improved version of the aforementioned embodiments of the application provides a third coupling element which can be pivoted about a third pivot axis and which is pivoted by the second coupling element. To this end, in this embodiment of the application the second coupling element has a second scanner which is radially spaced apart from the second pivot axis, i.e. from the pivot axis of the second coupling element, and the third coupling element has a deflection curve portion which is referred to herein as a third deflection curve portion. When the second coupling element is pivoted in the third pivot angle section in the second deflection direction, the third deflection curve portion is scanned by the second scanner of the second coupling element when being pivoted. Here, the second coupling element pivots the third coupling element into a deflected position.

[0018] The second pivot axis and / or the third pivot axis can run parallel to, at right angles to or at another angle to the drive pivot axis and / or the first pivot axis.

[0019] An improved version of the application provides that the second coupling element has a second resetter and the third coupling element has a third reset curve portion which is scanned by the second resetter when the second coupling element is pivoted about the second pivot axis in the fourth pivot angle section in the second pivot direction. Here, the second coupling element pivots the third coupling element back into its initial position in a third reset direction which is arranged opposite the third deflection direction. As with the first coupling element, in this embodiment of the application the third coupling element can be deflected into any pivot position independently of the first coupling element and is pivoted back again.

[0020] In a preferred design of the application, the second coupling element does not pivot the third coupling element when being pivoted in the fourth pivot direction which is arranged opposite the third pivot direction. As a result, the second coupling element can be pivoted back without pivoting the third coupling element, but rather the third coupling element remains in its pivoted position.

[0021] In a preferred embodiment of the application, when the second coupling element transitions from the third pivot angle section into the fourth pivot angle section, the second scanner disengages the third deflection curve portion and laterally or with a movement component transverse to the extension of the third deflection curve portion avoids the third coupling element in order to enable the third coupling element to be pivoted back.

[0022] As with the first scanner, in a preferred embodiment of the application the second scanner is also resilient. In the resilient case, the second scanner moves laterally or with a movement component transverse to the extension of the third deflection curve portion, in particular.

[0023] An embodiment of the application provides that the second coupling element has a reset spring for the pivoted return into the initial position. As a result, the second coupling element does not have to be pivoted back by a drive element.

[0024] In an embodiment of the application, the second pivot axis of the second coupling element and / or the third pivot axis of the third coupling element extends at right angles or in the radial plane of the drive pivot axis of the drive element and / or in the radial plane of the first pivot axis of the first coupling element.

[0025] An advantage of all embodiments of the application or of a plurality of embodiments in any case is that the first coupling element and the third coupling element can be pivoted back into the initial position from any pivot position which does not have to be known in that the drive element is deflected fully in both directions once from its initial position and finally pivoted back into the initial position. Here, the drive element is pivoted in a first pivot direction via a first pivot angle section and a second pivot angle section and deflected fully by the first coupling element irrespective of the pivot position in which the first coupling element is and subsequently pivoted back into the initial position and the drive element is pivoted in a second pivot direction which is arranged opposite via a third pivot angle section and a fourth pivot angle section and deflected fully by the second coupling element irrespective of the pivot position in which the third coupling element is and pivoted back into the initial position. Subsequently, all elements of the cam gear according to the application are in their initial position and the coupling elements can be deflected into any pivot position. This enables, for example, the manual pivoting of the coupling elements into any arbitrary pivot position and the pivoting back into the initial position using the drive element.

[0026] The subject matter of claim 13 is a drive unit with the above-mentioned embodiments of the cam gear and an electric motor for pivoting the drive element.

[0027] The subject matter of claim 14 is an air outlet with the above-mentioned embodiments of the cam drive for pivoting or displacing two air control elements independently of one another using a drive, for example an electric motor. The air outlet is used for supplying air to the passenger compartment of a motor vehicle. The air outlet has two pivotable air deflection elements, in particular pivotable discs for deflecting the air flow, or one air deflection element and one air quantity control element, in particular a throttle flap or throttle slide for controlling the quantity of air flowing through the air outlet. The first coupling element of the cam drive is rigidly, hingedly or in another way drivingly connected to the first air deflection element of the air outlet such that when the first coupling element is deflected, it pivots the air deflection element in one direction and when the first coupling element is pivoted back, it pivots the air deflection element in the oppositely disposed direction. The third coupling element is rigidly, hingedly or in another way drivingly connected to the second air deflection element or air quantity control element of the air outlet such that when the third coupling element is deflected, the third coupling element of the cam drive pivots or displaces the second air deflection element or air quantity control element of the air outlet in one direction. On return pivoting, the third coupling element of the cam drive pivots or displaces the second air deflection element or air quantity control element back. With the cam drive according to the invention, the two air deflection elements or the air deflection element and the air quantity control element can be pivoted independently of one another or the air quantity control element can also be displaced, that is to say deflected and reset independently of one another.

[0028] The features and combinations of features, embodiments and designations mentioned in the introductory part of the description of the invention and in the following description of the drawings and / or shown in the drawings can be used not only in the respectively specified or shown combination, but also in essentially any other combination, but also individually. Embodiments of the invention which do not have all the features of the dependent claims are possible. Individual features of the claims can also be replaced by other disclosed features or combinations of features. Embodiments of the invention which do not have all the features of the examples, but essentially any part of the features shown in the examples, are also possible. BRIEF DESCRIPTION OF DRAWINGS

[0029] The invention is explained in more detail below on the basis of the embodiments shown in the drawings. Therein:

[0030] Figure 1 a perspective view of an air outlet according to the invention with a cam drive according to the invention is shown in the initial position,

[0031] Figure 1a a perspective view of an air outlet according to the invention with a cam drive according to the invention is shown in the initial position, Figure 1a view of the drive element and the first coupling element of the cam drive mechanism,

[0032] Figure 2 a drive element and a first coupling element of the cam drive mechanism are shown in the deflected position, Figure 1

[0033] Figure 2a a drive element and a first coupling element of the cam drive mechanism are shown in the deflected position, Figure 1a

[0034] Figure 3 a drive element and a first coupling element of the cam drive mechanism are shown in the deflected position, DETAILED DESCRIPTION

[0035] Figure 1 and Figure 2 The air outlet 1 according to the application shown in Fig. 1 has a housing 2 which in this embodiment is flat and rectangular tubular and which at the same time forms an air channel 3 of the air outlet 1. In the air channel 3 there are arranged one after the other in the flow direction a first group of vanes 4 with first vanes 4 and a second group of vanes 5 with second vanes 5. The vanes 4, 5 can also be understood generally as air deflection elements 6, 7. The vanes 4, 5 of each group are arranged parallel to one another side by side or one above the other in the air channel 3 and can be pivoted about a vane axis which runs in the longitudinal direction of the vanes 4, 5. The pivot axis of the first vanes 4 runs perpendicular to the pivot axis of the second vanes 5.

[0036] The vanes 4, 5 of each group are connected to coupling rods 8, 9 which are connected to the vanes 4, 5 in a hinged manner at a radial distance from the pivot axis of the vanes 4, 5 in such a way that the vanes 4, 5 of each group are pivoted together parallel to one another about the pivot axis of the vanes 4, 5.

[0037] In order to pivot the vanes 4, 5 of each group independently of one another, the air outlet 1 has a cam drive mechanism 10 according to the application which has a first coupling element 11 for pivoting the first vanes 4 and second and third coupling elements 12, 13 for pivoting the second vanes 5. The vanes 4, 5 are driven, i.e. pivoted, by a drive element 14 which in this embodiment is arranged above the housing 2 of the air outlet 1 together with the first coupling element 11. The second and third coupling elements 12, 13 are arranged externally at the side of the housing 2 of the air outlet 1.

[0038] ​​The drive element 14 is pivotable about a pivot axis, which is referred to here as drive pivot axis 15 in order to distinguish it from the other pivot axes. The first coupling element 11 is pivotable about a first pivot axis 16, the second coupling element 12 is pivotable about a second pivot axis 17, and the third coupling element 13 is pivotable about a third pivot axis 18. In the present embodiment, the drive pivot axis 15 runs parallel to the first pivot axis 16 and parallel to the pivot axis of the first disc 4 which is pivoted using the first coupling element 11. In the present embodiment, the second pivot axis 17 and the third pivot axis 18 are likewise parallel to one another and parallel to the pivot axis of the second disc 5 which is pivotable using the third coupling element 13. In the present embodiment, the second and third pivot axes 17, 18 are perpendicular to the drive pivot axis 15 and the first pivot axis 16, that is to say they run in the radial plane of the drive pivot axis 15 and the first pivot axis 16.

[0039] In order to pivot the drive element 14 about the drive pivot axis 15, the air outlet 1 has a transmission motor, that is to say an electric motor 19 with a reduction transmission, which is likewise arranged on the housing 2 of the air outlet 1.

[0040] In order to pivot the first coupling element 11, the drive element 14 has a first scanner 20 which is radially spaced apart from the drive pivot axis 15. In the present embodiment, the first scanner 20 is a pin which is movably guided in the drive element 14 parallel to the drive pivot axis 15 and is loaded by a spring element, not visible in the drawing, in the direction of the housing 2 of the air outlet 1.

[0041] When the drive element 14 is pivoted from the initial position shown in Figure 1 and Figure 1a the first pivot direction 21, the first scanner 20 abuts against an edge of the first coupling element 11, wherein the edge forms a first deflection curve 22 which is curved convexly in the present embodiment. When the drive element is pivoted in the first pivot direction 21 over a first pivot angle section, the first scanner 20 slides along the first deflection curve 22, which can be understood as a "scanning" of the first deflection curve 22.

[0042] The first coupling element 11 is rigidly connected to one of the first discs 4 in such a way that the first deflection curve 22 has a radial spacing from the pivot axis of the first disc 4, which is also the first pivot axis 16 of the first coupling element 11. When the first deflection curve 22 is scanned, the first scanner 20 pivots the first coupling element 11, the first disc 4 rigidly connected to the first coupling element 11, and the other first discs 4 by means of the first coupling lever 8.

[0043] The drive element 14 pivots the first coupling elements 11 and the first vanes 4 to such an extent that the first vanes 4 can pivot to the greatest extent, that is to say until the first vanes 4 are deflected to the greatest extent. Figure 2 and Figure 2a The first vane 4 is shown in the fully deflected position. It goes without saying that the first vane 4 can also be pivoted to a lesser extent. If the drive element 14 is pivoted in a second pivoting direction 25 which is arranged opposite the first pivoting direction 21, the drive element does not pivot the first vane 4, but the first vane 4 remains in the pivoting position which it has previously reached in a deflected manner.

[0044] When the first vane 4 is deflected to the greatest extent and cannot be pivoted further together with the first coupling element 11 while the drive element 14 is pivoted further in the first pivoting direction 21, the first deflection curve 22 presses the first scanner 20 which has a hemispherical end for this purpose against the force of its spring element away from the housing 2 of the air outflow device 1, so that the first scanner 20 is detached from the first deflection curve 22. Here, the first scanner 20 moves transversely to the extent of the first deflection curve 22, that is to say perpendicularly to the first coupling element 11 and, in the present embodiment, onto the upper side of the first coupling element 11 which faces away from the housing 2 of the air outflow device 1.

[0045] When the first scanner 20 is detached from the first deflection curve 22, the drive element 14 enters from the first pivoting angle section into the second pivoting angle section.

[0046] The drive element 14 has a second pin which has a different radial spacing, in the present embodiment a greater radial spacing, from the drive pivoting axis 15 than the first scanner 20. The second pin, in the present embodiment, rigidly projects from the drive element 14 and forms a first restorer 23 which, in the fully deflected position, abuts one of the first vanes 4 at a radial spacing from the first pivoting axis 16 and pivots it back into the initial position. Figure 2a The drive element 14 and the first vane 4 or first air deflection element 6 are shown in the deflected position and the first restorer 23 is shown shortly before abutting one of the first vanes 4; Figure 2 A corresponding perspective view is shown.

[0047] The first restorer 23 slides along the edge of the first vane 4 which forms the first rest curve 24 when the first vane 4 is pivoted back. The sliding of the first restorer 23 along the first rest curve 24 can also be referred to as a "scanning" of the first rest curve 24 with the first restorer 23. The pivoting angle of the drive element 14 in order to pivot the first coupling element 11 from the fully deflected position back into the initial position is referred to here as the second pivoting angle section.

[0048] To return the first coupling element 11 to its pivot position, the drive element 14 pivots along the same first pivot direction 21 as during the deflection. The first coupling element 11 deflects as the drive element 14 pivots along the first pivot direction 21 in a first pivot angle segment, and pivots back to its initial position as the drive element 14 pivots further along the first pivot direction 21 in a second pivot angle segment. As described above, when the drive element 14 itself pivots back to its initial position along the second pivot direction 25, the drive element does not cause the first coupling element 11 to pivot, thus the disk 4 remains in its corresponding pivot position when the drive element 14 returns to its initial position.

[0049] Figure 2a The image shows the drive element 14 along with the disk 4 at maximum deflection during the transition from the first pivot angle segment to the second pivot angle segment. Figure 3 The drive element 14 at the end of the second pivot angle section and the first disk 4 pivoting back to its initial position are shown.

[0050] Because the driving element 14 moves along the second pivot direction 25, in this embodiment from Figure 1 and Figure 1a Starting from the initial position, the second and third coupling elements 12 and 13 pivot, thereby pivoting the second platter 5 of the other platter group. If—in this embodiment—the drive element 14 pivots along the second pivot direction 25 from the initial position, the drive element abuts the first arm 26 of the second coupling element 12 with its obliquely bent end away from the drive pivot axis 15. The second coupling element, in this embodiment, has an L-shaped rod that can pivot about the second pivot axis 17 at its apex. The edge of the first arm 26 of the second coupling element 12 forms a second deflection curve 27. When the drive element 14 pivots from the initial position along the second pivot direction 25, the obliquely bent end of the drive element 14 slides along this second deflection curve, causing the second coupling element 12 to pivot along the second deflection direction 28. The sliding of the drive element 14 along the first arm 26 of the second coupling element 12 can also be referred to as a “scan” of the second deflection curve 27.

[0051] The second coupling element 12 has a return spring (not shown in the figures) that loads the second coupling element back to its initial position such that when the second coupling element 12 is not held in the deflected position by the drive element 14, the second coupling element pivots back to its initial position.

[0052] The second coupling element 12 has a second scanner 29 which is arranged radially spaced from the second pivot axis 17 of the second coupling element 12 at a second lever arm 30 of the second coupling element 12. The second scanner 29 is, like the first scanner 20, a pin with a hemispherical end which is guided displaceably in the second coupling element 12 parallel to the second pivot axis 17. A spring element, not visible in the drawing, loads the second scanner 29 in the direction of the housing 2 of the air outlet 1.

[0053] An end face edge of the third coupling element 13, which in the present embodiment is inclined, faces the second pivot axis 17 and forms a third deflection curve 31 along which the second scanner 29 slides and thereby pivots the third coupling element 13 in a third deflection direction 32 when the drive element 14 is pivoted in the second pivot direction 25 from the initial position in a third pivot angle section and thereby pivots the second coupling element 12 in the second deflection direction 28.

[0054] If the drive element 14 is further pivoted in the second pivot direction 25 and thereby the second coupling element 12 is further pivoted in the second deflection direction 28 in a fourth pivot angle section which follows the third pivot angle section, the second scanner 29 comes off the second deflection curve 27 at an end of the end face edge of the second coupling element 12 which forms the second deflection curve 27, and a second resetter 33 which rigidly protrudes at an end away from the second pivot axis 17 at the second lever arm 30 abuts against and, on further pivoting, slides along a longitudinal edge of the third coupling element 13. The longitudinal edge of the third coupling element 13 along which the second resetter 33 slides can also be referred to as a third reset curve 34, and the sliding of the second resetter 33 along the third reset curve 34 can be understood as a "scanning" of the third reset curve 34. The scanning of the third reset curve 34 pivots the third coupling element 13 back into its initial position. When the second coupling element 12 is pivoted in the third pivot angle section, the pivoting of the drive element 14 in the second pivot direction 25 here and the resulting pivoting of the second coupling element 12 then also deflect the third coupling element 13, and when the second coupling element 12 is pivoted in the fourth pivot angle section, the third coupling element 13 is pivoted back into the initial position in the case of the same pivoting direction of the drive element 14 and the second coupling element 12.

[0055] The third coupling element 13 is pivoted in a frictional manner in such a way that it does not pivot when the second coupling element 12 is pivoted back against the second deflection direction 28. The third coupling element 13 can thus be pivoted into any position and held in this position when the drive element 14 and the second coupling element 12 are pivoted back. When pivoted back in a reset direction arranged opposite the second deflection direction 28 via the fourth pivot angle section and the third pivot angle section, the second coupling element 12 does not pivot the third coupling element 13.

[0056] The third coupling element 13 has a long hole 35 running in its longitudinal direction into which a peg 36 is inserted, which peg projects from an end of a rod 37, which rod is arranged rigidly at one of the second discs 5 of the second disc pack in such a way that the second disc 5 is pivoted by the pivoting of the third coupling element 13.

[0057] The cam mechanism 1 according to the application can also be understood as a drive unit according to the application, together with the electric motor 19 or drive mechanism motor.

[0058] List of reference signs:

[0059] 1 air outlet

[0060] 2 housing

[0061] 3 air channel

[0062] 4 first disc

[0063] 5 second disc

[0064] 6 first air deflection element

[0065] 7 second air deflection element

[0066] 8 first coupling rod

[0067] 9 second coupling rod

[0068] 10 cam mechanism

[0069] 11 first coupling element

[0070] 12 second coupling element

[0071] 13 third coupling element

[0072] 14 drive element

[0073] 15 drive pivot axis

[0074] 16 first pivot axis

[0075] 17 second pivot axis

[0076] 18 third pivot axis

[0077] 19 electric motor

[0078] 20 first scanner

[0079] 21 first pivoting direction

[0080] 22 first deflection curve

[0081] 23 first resetter

[0082] 24 first reset curve

[0083] 25 second pivoting direction

[0084] 26 first arm

[0085] 27 second deflection curve

[0086] 28 second deflection direction

[0087] 29 second scanner

[0088] 30 second arm

[0089] 31 third deflection curve

[0090] 32 third deflection direction

[0091] 33 second resetter

[0092] 34 third reset curve

[0093] 35 long hole

[0094] 36 peg

[0095] 37 rod

Claims

1. A cam drive mechanism (10) comprising: a drive element (14) pivotable about a drive pivot axis (15); and a first coupling element (11) pivotable about a first pivot axis (16), wherein, The first pivot axis (16) of the first coupling element (11) has a distance relative to the drive pivot axis (15), wherein the drive element (14) has a first scanner (20) having a radial distance from the drive pivot axis (15), and the first coupling element (11) has a first deflection curve (22) that can be scanned by the first scanner (20) of the drive element (14) such that, starting from the initial position of the drive element (14) and the first coupling element (11), when the drive element (14) pivots about the drive pivot axis (15) along the first pivot direction (21) within the first pivot angle segment, the first deflection curve (22) of the first coupling element (11) can be scanned by the first scanner (20) of the drive element (14), and by The first coupling element (11) is capable of pivoting around the first pivot axis (16) in a first deflection direction to a deflection position. The driving element (14) has a first resetter (23) with a radial distance from the driving pivot axis (15), and the first coupling element (11) has a first reset curve (24). When the driving element (14) further pivots in the second pivot angle section along the first pivot direction (21) from the deflection position of the first coupling element (11), the first reset curve can be scanned by the first resetter (23) of the driving element (14), thereby enabling the first coupling element (11) to pivot back to the initial position along a first reset direction opposite to the first pivot direction (21) around the first pivot axis (16).

2. The cam transmission mechanism 10 according to claim 1, characterized in that, The cam drive mechanism (10) is designed such that when the drive element (14) pivots back about the drive pivot axis (15) along a second pivot direction (25) opposite to the first pivot direction (21) via the first pivot angle segment and the second pivot angle segment, the drive element (14) does not adjust the first coupling element (11).

3. The cam transmission mechanism (10) according to claim 1 or 2, characterized in that, When the drive element (14) transitions from the first pivot angle section to the second pivot angle section, the first scanner (20) disengages from the first deflection curve portion (22) of the first coupling element (11) and avoids the coupling element (11) by moving laterally to the extension of the first deflection curve portion (22).

4. The cam transmission mechanism (10) according to any one or more of claims 1 to 3, characterized in that, The first scanner (20) is elastic in the transverse direction of the extension of the first deflection curve (22).

5. The cam transmission mechanism (10) according to any one or more of the preceding claims, characterized in that, The cam drive mechanism (10) has a second coupling element (12) that is pivotable about a second pivot axis (17) and has a second deflection curve (27) such that when the drive element (14) pivots about the drive pivot axis (15) along the second pivot direction (25) from the initial position of the second coupling element (12), the drive element (14) scans the second deflection curve (27), and the second coupling element (12) pivots about the second pivot axis (17) along the second deflection direction (28) to the deflection position.

6. The cam transmission mechanism (10) according to claim 5, characterized in that, The second coupling element (12) has a second scanner (29) radially spaced from the second pivot axis (17), and the cam drive mechanism (10) has a third coupling element (13) that is pivotable about a third pivot axis (18), and that the third coupling element has a third deflection curve (31) such that when the second scanner (29) of the second coupling element (12) pivots about the second pivot axis (17) along a second deflection direction (28) in a third pivot angle segment, the drive element (14) scans the third deflection curve (31) of the third coupling element (13), and the third coupling element (13) pivots about the third pivot axis (18) along the third deflection direction (28) to a deflection position.

7. The cam transmission mechanism (10) according to claim 6, characterized in that, The second coupling element (12) has a second reset device (33) radially spaced from the second pivot axis (17), and the third coupling element (13) has a third reset curve portion (34) such that when the second coupling element (12) pivots about the second pivot axis (17) along the second deflection direction (28) in the fourth pivot angle segment, the second reset device (33) of the second coupling element (12) scans the third reset curve portion (34) of the third coupling element (13), and the third coupling element (13) pivots back to the initial position about the third pivot axis (18) along a third reset direction set opposite to the third deflection direction (32).

8. The cam transmission mechanism (10) according to claim 6 or 7, characterized in that, The cam drive mechanism (10) is designed such that when the second coupling element (12) pivots back to the initial position about the second pivot axis (17) along a fourth pivot direction opposite to the third deflection direction (32) via the third pivot angle segment and the fourth pivot angle segment, the second coupling element (12) does not adjust the third coupling element (13).

9. The cam transmission mechanism (10) according to any one or more of claims 6 to 8, characterized in that, When the second coupling element (12) transitions from the third pivot angle section to the fourth pivot angle section, the second scanner (29) disengages from the third deflection curve section (31) of the third coupling element (13).

10. The cam drive mechanism (10) according to any one or more of claims 6 to 9, characterized in that, The second scanner (29) is elastic, extending laterally from the third deflection curve portion (31).

11. The cam drive mechanism (10) according to any one or more of claims 6 to 10, characterized in that, The second coupling element (12) has a return spring that loads the second coupling element (12) back from the deflected position to the initial position.

12. The cam drive mechanism (10) according to any one or more of claims 5 to 11, characterized in that, The second pivot axis (17) of the second coupling element (12) and / or the third pivot axis (18) of the third coupling element (13) extend in the radial plane of the drive pivot axis (15) and / or in the radial plane of the first pivot axis (16) of the first coupling element (11).

13. A drive unit having a cam transmission mechanism (1) according to any one or more of the preceding claims, characterized in that, The drive unit has an electric motor (19) for pivoting the drive element (14).

14. An air outlet (1) having a pivotable first air steering element (6) and a pivotable second air steering element (7) or a pivotable air volume control element and having a cam drive mechanism (10) according to any one or more of claims 6 to 12, characterized in that, The first coupling element (11) and the first air steering element (6) are rigidly or driven connected such that the first coupling element (11) pivots the first air steering element (6), and / or the third coupling element (13) and the second air steering element (7) or the air volume control element are rigidly or driven connected such that the third coupling element (13) pivots the second air steering element (7) or pivots or pushes the air volume control element.

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