Actuating coupling rod for air guide vanes in vehicle ventilation structures

Abstract

A coupling rod (1) for operating air guide blades (21a, 21b) of a blade assembly used in a ventilation structure (20) of a vehicle, the coupling rod (1) having a plurality of support areas (2, 3), each support area (2, 3) being designed to accommodate a support shaft (4) assigned to one of the air guide blades (21a, 21b), whereby the corresponding support shaft (4) accommodated in the support area (2) is guided when the coupling rod (1) moves in an adjustment direction relative to the air guide blade (21a, 21b), at least one support area (2) of the coupling rod (1) being designed such that the support area (2) forms a support with the accommodated support shaft (4), the support allowing the support shaft (4) to rotate relative to the support area (2) on the one hand and to translate the support shaft (4) perpendicular to the axis of rotation and relative to the support area (2) at least over a predetermined or predeterminable distance on the other hand.

Description

[0001] The invention relates to a coupling rod for actuating air guide vanes of a vane assembly used in a vehicle ventilation arrangement and also to a corresponding ventilation arrangement having at least one such coupling rod.

[0002] In ventilation devices for vehicles, ventilation structures or air outlet nozzles are generally used, which allow precise control of the outgoing air flow. Such ventilation structures are used, in particular, to supply fresh air into the vehicle interior.

[0003] The airflow flows through the ventilation structure's inlet into an air channel defined by the ventilation structure's housing wall, passes through this air channel, and finally flows through the ventilation structure's outlet into the interior of a vehicle (e.g., a bus or truck). Generally, the amount of air flowing into the vehicle's interior per unit time through the ventilation structure can be controlled by an actuator that is adjustably arranged in the ventilation structure's air channel, such as a throttle flap or a closing flap. Optionally, the actuator can also be designed as an air guide element (in particular, an air guide vane) or as part of an air guide element assembly.

[0004] In this regard, it is generally known to adjust the air guide elements (in particular the air guide vanes) in parallel by means of connecting rods, whereby the air guide vanes can be moved from a closed position to an open position in a continuously or stepped pivoting manner. The connecting rods (also referred to as "coupling rods") can have a straight shape or a curved shape in the longitudinal direction and / or form a crank shape at the bearing point.

[0005] In general, known coupling rods are made of metal. This is because, compared to coupling rods made of plastic, metal coupling rods have the advantage that they are very dimensionally stable, even at a relatively small thickness. The bearing points or bearing areas can be introduced into the metal coupling rod by drilling or stamping. Frequently, the bearing points or bearing areas are introduced in a pattern that corresponds to the spacing of the air guide blades relative to one another, or in a pattern that corresponds to the spacing of the bearing shafts (journals) assigned to these air guide blades, on which the bearing areas are mounted.

[0006] The type of ventilation structure considered herein is particularly used for supplying air to the interior of a vehicle. Air guide vanes are pivotally mounted inside an air duct and serve to deflect the air flow from the main flow direction. By adjusting these air guide vanes, the air flow can be deflected in the desired direction. These air guide vanes are connected to each other from a kinematic perspective (e.g., via a connecting rod) and thus form a blade assembly. In addition, the air guide vanes are also used to block the air flow as required. To this end, these air guide vanes can be pivoted so that, in their respective end positions, they abut against each other, reducing the free flow cross-section of the air duct to zero and thus defining a closed position. Therefore, such air guide vanes are also used to block the air guide duct as so-called closing vanes and can particularly serve as an alternative to separately formed shut-off flaps.

[0007] Due to manufacturing tolerances, particularly in the air guide vanes, but also in the coupling elements for the kinematic coupling of the air guide elements, as well as in the housing and the support frame, such vane assemblies may not completely block the air flow. In particular, in a manufacturing process using injection molding, for example plastic injection molding, the aforementioned manufacturing tolerances can occur, meaning that the air guide vanes, which ideally should rest against each other in their end position (i.e., in the closed position), become jammed and thus inadequately sealed. Furthermore, in such coupling rods manufactured using injection molding, the assembly of the vanes is generally relatively complex due to the wide tolerance ranges.

[0008] Document DE 10 2015 118 548 B4 describes a ventilation structure in which the air guide vanes of this ventilation structure are pressed into the closed position by a spring-equipped gear, which acts on one or more connecting rods that can be adjusted by the gear. As a result, the vanes are synchronously pressed as a whole against the sealing surface in the housing using the energy stored in the elastic element. This is intended to compensate for manufacturing tolerances. However, even with such a ventilation structure, the closing force decreases as the distance from the controlled vanes increases. Therefore, a relatively large operating force is required to achieve reliable closing of the air guide vanes. In addition, an uncomfortably loud closing noise occurs when adjusting the air guide vanes to the closed position. In the solutions known from this prior art, the assembly of the connecting rods or the air guide vanes is also relatively complicated.

[0009] Also known are ventilation structures with air guide blades that can be moved to different angular positions relative to one another in order to orient the air flow differently. This allows, for example, the air flow to be concentrated or diverged, or improved air deflection in extreme positions to be achieved. Such ventilation structures are described, for example, in DE 10 130 951 A1 or DE 10 2016 214 186 A1.

[0010] The object of the present invention is to provide a coupling rod for adjusting the air guide vanes of a vane assembly from an open position to a closed position, wherein the coupling rod should be as flexible as possible. In particular, it should be possible to achieve a wide tolerance range during the manufacturing process and during the assembly of the air guide vanes. Furthermore, the permissible air leakage rate required by the customer should be achievable in a manner that is as simple as possible, yet still efficient.

[0011] This object is achieved by the subject matter of independent claim 1 , advantageous developments of which are given in the corresponding dependent claims.

[0012] The present invention therefore relates in particular to a coupling rod for actuating air guide vanes of a vane assembly used in a ventilation arrangement for a vehicle. The coupling rod has a plurality of bearing regions, wherein each bearing region is designed to accommodate a bearing shaft (journal, bearing pin, etc.) assigned to one of the air guide vanes, so that when the coupling rod is moved relative to the air guide vane in an adjustment direction, the corresponding bearing shaft accommodated in the bearing region is guided in a suitable manner.

[0013] In order to achieve a larger tolerance range during the manufacturing process and during the assembly of the air guide blades, it is particularly proposed according to the present invention that at least one supporting area of the connecting rod is designed so that the supporting area forms a support with a supported shaft (journal, supporting pin, etc.) which allows the supporting shaft to rotate relative to the supporting area on the one hand and to translate the supporting shaft perpendicular to the axis of rotation and relative to the supporting area at least over a predetermined or predeterminable distance on the other hand.

[0014] In particular, it is provided that the at least one bearing region of the coupling rod is designed to allow a translation of the bearing shaft perpendicular to the axis of rotation and relative to the bearing region only when a minimum force acting perpendicularly to the axis of rotation on the bearing shaft is exceeded. This minimum force is preferably predetermined or predeterminable and is, in particular, greater than the sliding friction or static friction occurring at the contact surface between the bearing region and the bearing shaft received by the bearing region.

[0015] According to a preferred embodiment of the coupling rod according to the present invention, at least one bearing region of the coupling rod is designed to allow a translation of the bearing shaft perpendicular to the axis of rotation relative to the bearing region, at least over a predetermined or predeterminable distance, and more specifically, only in the displacement direction of the coupling rod. This can be achieved, for example, by designing the at least one bearing region as a region extending from the coupling rod perpendicular to the displacement direction, wherein this region extending from the coupling rod perpendicular to the displacement direction is configured to be at least partially elastic, and in particular resilient, in the direction of the displacement direction of the coupling rod.

[0016] The distance by which the bearing shaft is permitted to translate perpendicularly to the axis of rotation in the displacement direction of the coupling rod relative to the bearing region depends, in particular, on the desired tolerance range and the required or permissible air leakage rate. In one embodiment, it is provided in this connection that at least one bearing region of the coupling rod is designed such that it forms a bearing with the received bearing shaft, which allows a translation of the bearing shaft perpendicularly to the axis of rotation and relative to the bearing region, so that in the closed position of the vane assembly, the individual air guide vanes and the coupling rod are each in a non-prestressed state.

[0017] Various embodiments are conceivable for forming at least one bearing region of the coupling rod which allows, on the one hand, a rotation of the bearing shaft relative to the bearing region and, on the other hand, a translation of the bearing shaft perpendicular to the axis of rotation and relative to the bearing region.

[0018] According to a particularly easy to implement, but still highly efficient embodiment, it is proposed in this regard that at least one supporting area of the connecting rod is designed, at least in some areas, as a supporting socket having a supporting opening for accommodating the supporting shaft, wherein the size and / or shape of the supporting opening is variable, at least in some areas, under the action of a minimum force acting in the radial direction.

[0019] In this regard, it is conceivable, for example, that the bearing socket has an elastic, in particular resilient, peripheral region which is designed in particular in the manner of a tuning fork.

[0020] In order to form an elastic peripheral area, the bearing socket can have a narrow portion extending radially from the bearing socket, the clear span of which is smaller than the diameter of the bearing shaft, wherein the narrow portion is blocked or open at the end area facing away from the bearing socket, thereby forming an elastically deformable tuning fork-shaped portion that constitutes the bearing socket at least in some areas.

[0021] Of course, other embodiments of the at least one bearing region of the coupling rod are also suitable, for example a bearing socket designed partially as a spring element, for example in the form of a blocked elongated hole or in the form of an open C.

[0022] According to the embodiment of the coupling rod according to the invention, at least one of its bearing regions is designed as a single-value radial bearing. Such single-value radial bearings are sometimes also referred to as "pure radial bearings" or "radial-axial bearings." Importantly, the radial bearing has rotation as its only degree of freedom.

[0023] As an alternative to this, however, it is of course also conceivable to provide a radial sliding bearing which is a radial bearing which additionally allows a translational movement in the direction of the axis of rotation.

[0024] In order to simplify the assembly of the connecting rod, according to an embodiment, it is proposed that each bearing area of the connecting rod preferably has a bearing opening for accommodating the bearing shaft of one of the air guide blades, wherein preferably each bearing opening has an inclined surface for centering the bearing shafts when the bearing shafts are introduced into the corresponding bearing opening.

[0025] In particular, the coupling rod can be designed as a plastic injection-molded part. A one-component embodiment is particularly conceivable, although alternatively, embodiments are conceivable in which the bearing regions are formed from a softer plastic component in order to suppress rattling caused by the bearing shaft in these bearing regions. In this case, a two-component injection molding process is provided.

[0026] The solution according to the invention described above in general terms (including its preferred developments) offers a number of significant advantages compared to solutions known from the prior art. Specifically, the bearing area of the coupling rod, which serves as a receptacle for the bearing shaft of the air guide vane, can be designed to be narrower or wider in size, thereby influencing the adjustment and assembly forces. Furthermore, by appropriately varying the dimensions of the bearing area, any rattling and squeaking noises can also be positively influenced.

[0027] In general, the coupling rod according to the invention is a flexible, bendable coupling rod having a variably designed (variable in shape and size) bearing portion for accommodating the bearing shaft of the air guide vanes. This allows for a wide tolerance range during production, in setting the adjustment force, and in the assembly of the vanes, and simultaneously allows for the air leakage rate required or permitted by the customer. By actuating the coupling rod, the air guide vanes can be brought into their sealed closed position simultaneously, but also in an undefined sequence.

[0028] The coupling rod according to the invention thus offers a high degree of flexibility or adaptability to the required tolerances, forces, and customer requirements. In particular, the coupling rod is preferably installable or usable identically, so that the driver and passenger have the same ventilation arrangement design, and thus only one tool (instead of two) is required to manufacture the coupling rods for the right and left ventilation arrangements.

[0029] The present invention also relates to a ventilation arrangement for a vehicle, wherein the ventilation arrangement comprises a housing with an inlet and an outlet, wherein the housing defines an air channel for causing air to flow from the inlet to the outlet along a main flow axis. The ventilation arrangement according to the invention further comprises a vane assembly arranged in the air channel, the vane assembly comprising a plurality of air guide vanes that are kinematically coupled and pivotable together relative to the main flow direction, wherein the air guide vanes are designed to deflect the air flow from the main flow direction in an open position of the vane assembly and to block the air flow in a closed position of the vane assembly.

[0030] For kinematically coupled actuation of the air guide vanes, at least one coupling rod of the type described above according to the invention is used, each air guide vane having a bearing shaft which is accommodated in the bearing region of the coupling rod.

[0031] Advantageously, in order to deflect the air horizontally, the air guide blades are designed as vertical blades.

[0032] The present invention further relates to a ventilation system comprising a first ventilation arrangement of the aforementioned type, which is designed as a left-side ventilation arrangement, and a second ventilation arrangement of the aforementioned type, which is designed as a right-side ventilation arrangement. It is proposed that coupling rods of identical design be used in each of the first and second ventilation arrangements for actuating the respective air guide vanes.

[0033] Exemplary embodiments of the solution according to the invention will be described in more detail below with reference to the accompanying drawings.

[0034] In the attached figure:

[0035] Figure 1 An exemplary embodiment of a ventilation structure according to the invention is shown schematically and in a partially cut-away isometric view;

[0036] Figure 2 A portion of an exemplary embodiment of a ventilation structure according to the invention is shown schematically and in an isometric view, with an embodiment of a coupling rod for operating air guide vanes in the ventilation structure;

[0037] Figure 3An exemplary embodiment of a ventilation structure according to the invention is shown schematically and in an isometric view. Figure 2 The portion shown in , wherein the air guide vanes are not shown; and

[0038] Figure 4 Shown in Figure 2 The bearing area of the coupling rod is shown in FIG.

[0039] Figure 1 An exemplary embodiment of a ventilation structure 20 according to the invention is shown in a partially cutaway view. This ventilation structure has a housing 22 with an inlet 23 and an outlet 24, wherein the housing 22 defines an air passage 27 extending from the inlet 23 to the outlet 24. A blade assembly is mounted in the air passage 27, in particular according to Figure 2 This can be seen more clearly in the diagram.

[0040] The blade assembly has a plurality of air guide blades 21a, 21b, which are kinematically coupled to a drive element 10 via a coupling rod 1. Specifically, the air guide blade 21a of the blade assembly is kinematically coupled via a coupling rod 1 to a control blade 21b, for example, arranged in the center of the blade assembly, wherein the control blade 21b can be adjusted by the drive element 10.

[0041] The air guide vanes 21a, 21b are each accommodated in a receiving portion of the coupling rod 1, designed as a bearing region 2, 3, via a bearing shaft 4 (pin) and are pivotally mounted on a support frame 26 of the vane assembly via a bearing 25. The control vane 21b can be pivoted relative to the air flow about its axis of rotation by the aforementioned drive element 10. Due to the coupling via the coupling rod 1, the other air guide vane 21a is also pivoted about its parallel axis of rotation, the axis of rotation of the air guide vane 21a corresponding to the axis of rotation of the control vane 21b.

[0042] By pivoting the control blade 21b and thus the remaining air guide blades 21a connected to the control blade 21a via the coupling rod 1 about their rotational axis, the air flow through the air channel 27 can be deflected in two opposite directions relative to the main flow direction. Figure 1 With the arrangement of the ventilation structure 20 , the air flow can be deflected toward both sides.

[0043] In addition, the blade assembly is also used to throttle the air flow or completely block the air flow by adjusting the air guide elements (control blade 21b and air guide blade 21a). For this purpose, the blade assembly can be moved from the open position (see Figure 1 ) moves to a closed position (not shown in the drawings).

[0044] A coupling rod 1, which is used in the ventilation arrangement 20 shown in the figures for actuating air guide blades 21a, 21b or for kinematically coupling the air guide blades 21a, 21b, has a plurality of bearing regions 2, 3. In the embodiment shown, the bearing regions 2, 3 of the coupling rod 1 are designed, at least in some areas, as bearing sockets with bearing openings 5 for accommodating bearing shafts 4. It is provided that each air guide blade 21a, 21b of the blade assembly has a correspondingly assigned bearing shaft 4 in the form of a bearing pin.

[0045] In order to facilitate insertion when placing onto the bearing shaft 4 , the bearing regions 2 , 3 designed as bearing sockets have corresponding bevels which center the respective bearing shaft 4 during insertion.

[0046] In the coupling rod 1 shown in the figures, two different types of bearing regions 2, 3 are used. On the one hand, a bearing region 3 is used which, together with the bearing shaft 4 accommodated therein, forms a single radial bearing, which in particular has rotation as the only degree of freedom. In this regard, it is particularly conceivable that this bearing is designed as a radial sliding bearing, i.e., as a radial bearing which, in addition to rotation, also allows translation of the bearing shaft 4 accommodated in the bearing region 3 in the direction of the axis of rotation.

[0047] On the other hand, the coupling rod 1 shown in the figures also uses a bearing region 2, which forms a bearing with a correspondingly received bearing shaft 4, which, on the one hand, allows the bearing shaft 4 received in the bearing region 2 to rotate relative to the bearing region 2, and, on the other hand, allows the bearing shaft 4 received in the bearing region 2 to translate perpendicularly to the axis of rotation and relative to the bearing region 2, at least over a predetermined or determinable distance. Figure 4 A support region 2 of this type is shown in detail in as an example.

[0048] Specifically, in Figure 4 The bearing region 2 of the coupling rod 1 shown in FIG is designed at least in some regions as a bearing socket with a bearing opening 5 for accommodating the bearing shaft 4, wherein the size and / or shape of the bearing opening 5 of the bearing region 2 is variable in at least some regions under the action of a minimum force acting in the radial direction. For this purpose, it is proposed that the bearing socket of the bearing region 2 has an elastic, in particular resilient, peripheral region 6 which is Figure 4 The embodiment shown in FIG is designed as a “tuning fork” type.

[0049] To form the elastic peripheral region 6, the bearing socket has a constriction 7 extending radially from the bearing socket, the clear span of which is smaller than the diameter of the bearing shaft 4 to be accommodated in the bearing socket. The constriction 7 is blocked or open in the end region facing away from the bearing socket, thereby forming an elastically deformable tuning fork-shaped portion that forms the bearing socket at least in some regions.

[0050] The elastic peripheral area 6 of the bearing socket is designed so that the bearing shaft 4 accommodated in the bearing socket of the bearing area 2 is allowed to translate perpendicularly to the rotation axis relative to the bearing area 2 over a certain distance, in particular only in the planned displacement direction of the coupling rod 1.

[0051] In this context, it is provided in particular that each bearing region 2 , 3 of the coupling rod 1 is designed as a region (coupling arm 9 ) projecting from the coupling rod 1 perpendicularly to the displacement direction.

[0052] This design ensures that only when the rotational axis is exceeded, the Figure 4 A translation of the support shaft 4 perpendicular to the axis of rotation and relative to the support region 2 is only permitted when a minimum force is applied to the support shaft 4 in the support region 2. This minimum force is determined by the spring constant of the elastic outer region 6. This minimum force is particularly greater than the sliding friction or static friction occurring at the contact surface between the support region 2 and the support shaft 4 accommodated therein.

[0053] By providing a dedicated bearing region 2 that not only allows the received bearing shaft 4 to rotate relative to the bearing region 2 but also allows the bearing shaft 4 to translate perpendicularly to the axis of rotation and relative to the bearing region 2, a flexible and, to a certain extent, bendable coupling rod 1 is provided overall. In particular, this coupling rod 1 has variably designed receptacles or supports for the bearing shafts 4 of the air guide blades 21a, 21b. These receptacles can be designed to be narrower or wider, thereby influencing the adjustment and assembly forces. Furthermore, any rattling and squeaking noises can be reduced or eliminated by appropriately designing the bearing opening 5 (size and / or shape).

[0054] Overall, a wider tolerance range is achieved during the production process and when setting the adjusting force and in the assembly of the blades.

[0055] The bearing area 2 (receiving portion) of the coupling rod 1 can be partially designed as an elastic element (for example as a blocked elongated hole or with an open C-shape) in order to be able to mount the bearing shaft 4 of the air guide blades 21a, 21b as simply as possible and to increase or influence the flexibility and tolerance range.

[0056] Although not shown in the figures, the bearing region 2 can be provided with a soft component in order to suppress possible squeaking and rattling noises.

[0057] In order to influence the adjustment force and the closing force, the coupling rod 1 can be designed to be straight, curved or irregular, at least in some areas.

[0058] The bearing region 2 projecting perpendicularly from the coupling rod 1 can also be connected to the coupling rod 1 by means of different coupling arms 9. The bearing sockets of the bearing region 2 can have equal or irregular distances from one another.

[0059] The coupling rod 1 according to the invention does not prestress the air guide vanes 21a, 21b of the blade assembly and is not subject to any prestressing, but is highly adaptable due to its fully flexible design. The flexible coupling rod 1 can be mounted or assembled in a uniform manner.

[0060] Due to the elastic design of the coupling rod 1, it is possible to achieve a close fit of the air guide vanes 21a, 21b relative to one another and thus to compensate for any possible manufacturing tolerances of the air guide vanes 21a, 21b and the coupling rod 1, as well as of the entire power chain from the drive element 10 to the housing 22. A reliable closing of the vane assembly can thus be achieved without leakage flows.

[0061] When the blade assembly is moved into the closed position, the outer air guide blade 21a reaches its respective end position first due to the appropriately arranged end stop, wherein the other air guide blades 21a, 21b can subsequently reach their respective end position due to the elastic design of the coupling rod 1. However, it is also conceivable that all air guide blades 21a, 21b reach their end position simultaneously as an alternative to this.

[0062] The invention is not limited to the embodiments shown in the drawings, but rather emerges from an overview of all features disclosed herein.

[0063] List of Reference Numerals

[0064] 1 Connecting rod

[0065] 2 Support area

[0066] 3 Support area

[0067] 4 Support shaft

[0068] 5 Support opening

[0069] 6 Elastic peripheral area

[0070] 7 Stenosis

[0071] 9 Connecting arm

[0072] 10. Driving element

[0073] 20 Ventilation structure

[0074] 21a Air guide vanes

[0075] 21b Air guide blades (control blades)

[0076] 22 housing

[0077] 23 Entrance

[0078] 24 Exit

[0079] 25 Support

[0080] 26 Support frame

[0081] 27 Air Channel

Claims

1. A ventilation structure for a vehicle, comprising: a vane assembly arranged in the air passage, the vane assembly having a plurality of air guide vanes kinematically coupled and pivotable together relative to a flow direction through the air passage, wherein the air guide vanes are pivotally mounted to a support frame by respective mountings; a coupling rod for actuating the air guide vanes, the coupling rod having a plurality of bearing regions, each bearing region being configured to accommodate a bearing shaft assigned to one of the air guide vanes, whereby the corresponding bearing shaft accommodated in the bearing region is guided when the coupling rod is moved relative to the air guide vane in an adjustment direction, at least one bearing region of the coupling rod being configured such that it forms a bearing with the accommodated bearing shaft, the bearing allowing the bearing shaft to rotate relative to the bearing region about an axis of rotation; wherein the at least one supporting area of the connecting rod is configured as a supporting socket having a supporting opening for accommodating the supporting shaft, wherein the supporting socket is configured so that the size and / or shape of the supporting opening is variable in at least some areas when the supporting shaft acts against the supporting socket with at least a minimum force in a radial direction, wherein the supporting socket engages the supporting shaft so that the supporting shaft is allowed to undergo translational movement perpendicular to the rotation axis and relative to the supporting area to facilitate changing the size and / or shape of the supporting opening only when the minimum force is exceeded, wherein the supporting socket includes a peripheral area extending from the connecting rod, surrounding the supporting opening and forming a free end adjacent to a narrow portion extending from the supporting opening toward the connecting rod, so that the supporting socket is closed on a side opposite to the narrow portion and the connecting rod and facing the mounting member.

2. The ventilation structure according to claim 1, The minimum force is defined and is greater than the sliding friction or static friction occurring at the contact surface between the bearing region and the bearing shaft received by the bearing region.

3. The ventilation structure according to claim 1, The at least one supporting region is designed as a region extending from the coupling rod perpendicularly to the displacement direction of the coupling rod.

4. The ventilation structure according to claim 1, Therein, at least one bearing region of the coupling rod is designed as a single-value radial bearing.

5. The ventilation structure according to claim 1, The coupling rod is designed as a plastic injection-molded part.

6. The ventilation structure according to claim 1, In order to deflect the air horizontally, the air guide blades are designed as vertical blades.

7. A ventilation system comprising two ventilation structures according to claim 1, wherein the two ventilation structures include a first ventilation structure and a second ventilation structure, the first ventilation structure being implemented as a left ventilation structure, and the second ventilation structure being implemented as a right ventilation structure.

8. A ventilation structure for a vehicle, comprising: a vane assembly arranged in the air passage, the vane assembly having a plurality of air guide vanes kinematically coupled and pivotable together relative to a flow direction through the air passage, wherein the air guide vanes are pivotally mounted to a support frame by respective mountings; a coupling rod for actuating the air guide vanes, the coupling rod having a plurality of bearing regions, each bearing region being configured to accommodate a bearing shaft assigned to one of the air guide vanes, whereby the corresponding bearing shaft accommodated in the bearing region is guided when the coupling rod is moved relative to the air guide vane in an adjustment direction, at least one bearing region of the coupling rod being configured such that it forms a bearing with the accommodated bearing shaft, said bearing allowing, on the one hand, a rotation of the bearing shaft relative to the bearing region about an axis of rotation; wherein the at least one bearing region of the coupling rod is configured as a bearing socket having a bearing opening for accommodating the bearing shaft, wherein the bearing socket is configured such that a size and / or a shape of the bearing opening is variable at least in some regions when at least a minimal force of the bearing shaft acts against the bearing socket in a radial direction; The support socket includes a peripheral area, which is closed on a first side of the support opening, the first side being opposite to the connecting rod and facing the mounting member, and a narrow portion extending from a second side of the support opening toward the connecting rod, so that the peripheral area defines an elastically deformable tuning fork-shaped portion toward the connecting rod.

9. A ventilation structure for a vehicle, comprising: a vane assembly arranged in the air passage, the vane assembly having a plurality of air guide vanes kinematically coupled and pivotable together relative to a flow direction through the air passage, wherein the air guide vanes are pivotally mounted to a support frame by respective mountings; a coupling rod for actuating air guide vanes of a vane assembly used in a ventilation arrangement for a vehicle, the coupling rod having a plurality of bearing regions, each bearing region being configured to accommodate a bearing shaft assigned to one of the air guide vanes, whereby the corresponding bearing shaft accommodated in the bearing region is guided when the coupling rod is moved relative to the air guide vane in an adjustment direction, at least one bearing region of the coupling rod being configured such that the bearing region forms a bearing with the accommodated bearing shaft, the bearing allowing, on the one hand, a rotation of the bearing shaft relative to the bearing region about an axis of rotation and, on the other hand, a translation of the bearing shaft perpendicular to the axis of rotation and relative to the bearing region; wherein the at least one supporting area of the connecting rod is configured as a supporting socket having a supporting opening for accommodating the supporting shaft at least in some areas, wherein the supporting socket is configured so that the size and / or shape of the supporting opening is variable at least in some areas, wherein the supporting socket includes a peripheral area extending from the connecting rod, surrounding the supporting opening and forming a free end adjacent to a narrow portion extending from the supporting opening toward the connecting rod, so that the peripheral area surrounds the supporting socket on a side of the supporting socket opposite to the connecting rod and toward the mounting member.

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