Input device for better securing associated actuators for generating haptic feedback

Abstract

The invention relates to an input device (1), comprising: a support (3) for fixing the input device (1) to a load-bearing component, in particular a motor vehicle component; a panel (2) forming operation surfaces (2a, 2b) and / or carrying operation parts; an elastic support device (10) for movably and resiliently supporting the panel (2) on the bracket (3); an actuator (11) fixed at the panel (2) for exciting vibration and / or oscillation of the panel (2) in order to generate tactile feedback for an operator touching the operating surface (2a, 2b) or the operating part; wherein an engagement device (6) is arranged next to the panel (2), the actuator (11) is fixed to the panel (2) in a form-fitting manner in the associated engagement position, and a blocking device (5, 12) is also provided in order to block at least the engagement device (6) in the engagement position by means of the blocking device (5, 12); the invention also relates to a related use and a related installation method.

Description

Technical Field

[0001] The present invention relates to an input device having an actuator for generating haptic feedback. Background Art

[0002] An operator is accustomed to experiencing a haptically distinct confirmation after performing an operation input. In an operating member that can be mechanically displaced from a rest position to an actuated position against a restoring force, the displacement is mostly haptically perceptible, such that generally active (i.e., generated by an actuator) feedback is not necessary. Additionally, in an input device that dispenses with mechanical means (such as an input device having a touch-sensitive input surface), for example, where a touch on the input surface is detected capacitively, optically, or resistively. In this case, it is necessarily required to generate haptic feedback (also referred to as active haptic feedback) to confirm the performed operation input, thereby reliably avoiding incorrect operations. For this purpose, electromechanical vibration exciters, so-called actuators, are typically used to generate a movement of a contact surface or an actuating surface provided at the input device (such as a panel) that is perceptible to the operator. In most cases, due to the lack of construction space, it is prohibited to directly excite a component (such as a panel) forming the operating surface or the actuating surface, but rather it is necessary to transmit through multiple components to the component that is actually provided for actuation or contact, because the actuator is usually arranged on the side of the input device facing away from the operator. A problem here is the fixation of the actuator. For example, a material-locking connection by adhesion has the following disadvantages: the fastening is irreversible, and the correction or subsequent adjustment of the fixation can only be carried out to a limited extent, especially when the curing process, which aims at a short processing time during manual or automatic installation, should be short in time. However, this not only affects the production duration, especially the production rhythm, but also increases the production cost due to high costs (such as surface pretreatment, thermal curing, or UV curing, etc.). Summary of the Invention

[0003] Against this background, the object of the present invention is to provide an input device that better fixes a relevant actuator for generating haptic feedback, which in particular allows for a simplified, faster, reversible, and / or subsequently adjustable fixation of the actuator. This object is achieved by the input device according to claim 1. Corresponding advantageous uses and corresponding advantageous installation methods are respectively the subject matter of the dependent claims. Advantageous design solutions are respectively the subject matter of the dependent claims. It should be noted that the features detailed separately in the claims can be combined with each other in any technically meaningful way and exhibit other design solutions of the present invention. The description in particular further characterizes and details the present invention in conjunction with the drawings.

[0004] The present invention relates to an input device. The input device of the present invention has a bracket for fixing the input device at a load-bearing component, in particular a vehicle component, such as at a dashboard or a lining of a passenger compartment. The bracket is formed, for example, from a thermoplastic or Zamak alloy.

[0005] Furthermore, according to the present invention, a panel forming an operating surface and / or carrying operating components is provided. The panel, for example, has a visible surface facing the operator, the visible surface including a touch-sensitive operating surface and / or having a fixed handle with an adjustable actuating component or an electromechanical operating component arranged on the visible surface. According to the present invention, elastic support means are provided for movably and resiliently supporting the panel at the bracket. The support means are formed, for example, from an elastic material, such as a metal or a metal alloy. The support means are preferably designed to be vibration-damping, for example, the support means are formed from an elastic and at the same time vibration-damping material, such as an elastomer.

[0006] According to the present invention, an actuator received in a receiving space of the panel is also provided for exciting vibration and / or oscillation of the panel in order to cause a haptic feedback for an operator touching the operating surface or the operating component. The receiving space is, for example, a cavity defined by the panel at at least two opposite sides. The actuator is preferably arranged on a side of the panel facing away from the operator. The actuator is preferably a piezoelectric actuator, a vibration motor with an eccentric rotating mass (ERM) or a linear resonant actuator (LRA). The actuator is, for example, an actuator acting between the bracket and the panel and supported on both of them. The actuator is preferably an actuator supported only at the panel. For example, the actuators each have a coil, and an electromagnetic field generated by the coil is formed and arranged for cooperation with an armature. The actuator is preferably a plunger-armature actuator, also known to those skilled in the art by the English name "Voice-Coil-Actuator".

[0007] According to the present invention, a latching device is provided beside the panel, which latches the actuator in a form-fitting manner at the panel in a relevant latching position. Furthermore, according to the present invention, a blocking device is also provided in order to block at least the latching device in the latching position by means of the blocking device.

[0008] This ensures that the actuator is fixed to the panel by means of the blocking device. A material-based connection between the actuator and the panel, such as by means of an adhesive layer, can be completely dispensed with, so that the fixing is preferably carried out in an adhesive-free manner. That is, the adhesive not only affects the coupling between the panel and the actuator, but also at least undergoes a deterioration of its mechanical properties and its adhesion due to aging or depending on the environment. In addition, the adhesion of the actuator makes the associated installation method significantly more complex, because in addition to the necessary processing effort (such as plasma surface pretreatment), the curing duration that must be provided forces the installation method to have a downtime, which makes the material handling and product handling during the production process more complex. In addition, the snap connection can be produced more quickly and reversibly and can be adjusted subsequently.

[0009] The blocking device is preferably also formed to achieve a force-fit fixing of the actuator by means of a snap-in device that abuts the actuator in the snap-in position. For example, the blocking device pre-tensions the actuator against the panel via the snap-in device, in particular the blocking device enables the actuator arranged in the receiving space to be positioned without play in at least one direction, preferably in at least two orthogonal directions.

[0010] In a preferably simple-to-manufacture design, the blocking device is integrally formed with the panel, in particular with a component of the panel. The blocking device is formed, for example, by thermal deformation of the panel material, thereby setting the action on the snap-in device.

[0011] According to a preferred design, the blocking device includes a pin with a head and a corresponding drill hole in the panel for fixing the pin form-fittingly, force-fittingly or material-fittingly in the drill hole. According to another design, the blocking device includes a screw with a head and a corresponding drill hole in the panel for fixing the screw form-fittingly, force-fittingly or material-fittingly in the drill hole. Preferably, a screw with a self-tapping thread is involved. The head is provided, for example, with an access portion for a tool.

[0012] At least the head preferably cooperates with the snap-in device in the end position. The head directly abuts, for example, a snap-in projection belonging to the snap-in device. The head can be shaped here, for example, by thermal deformation.

[0013] The actuator can preferably be introduced into the receiving space along the introduction direction, wherein in the introduction end position of the actuator, the actuator is engaged from behind by the latching means, in particular the latching projection, in order to fix the actuator in the direction opposite to the introduction direction. Here, the blocking means is preferably formed such that the actuator is positively fixed, preferably without play, via the latching means in a direction perpendicular to the introduction direction, preferably in directions perpendicular and parallel to the introduction direction.

[0014] The deflection direction or the oscillation direction of the actuator, preferably at least the main deflection direction or the main oscillation direction, is preferably perpendicular to the introduction direction.

[0015] The axial direction of the bore, predefined for example by the longest extension direction of the bore, is preferably parallel to the introduction direction.

[0016] The panel has a frame on its side facing away from the operator, the frame forming ribs that define the receiving space. The frame is formed at least in part, for example, from a translucent or transparent material in order to provide a light conductor. The light conductor is used, for example, to backlight an illumination surface associated with the operating surface with the light of a light source fixed at the support.

[0017] At least one of the ribs of the frame preferably forms a stop surface, for example by means of a tab extending perpendicular to the introduction direction, in order to predetermine the introduction end position. This ensures the positioning accuracy of the actuator, since the position of the actuator is thereby predefined only by the frame and is not affected, for example, by the relative arrangement of the frame and other components of the panel. At least the frame is preferably manufactured in a single injection molding step.

[0018] The invention further relates to the use of an input device according to one of the above-described embodiments in a motor vehicle.

[0019] The present invention further relates to an installation method for an input device, the installation method having the following steps. In a providing step, a panel forming an operating surface and / or carrying operating components is provided. In a subsequent fastening step, an actuator for exciting vibrations and / or oscillations of the panel is fastened to the panel in order to cause a haptic feedback for an operator touching the operating surface or the operating components. The actuator is preferably fastened to the panel on a side of the panel facing away from the operator. The actuator is preferably a piezoelectric actuator, a vibration motor with an eccentric rotating mass (ERM) or a linear resonant actuator (LRA). The actuator is, for example, an actuator acting between the bracket and the panel and supported on both of them. The actuator is preferably an actuator supported only on the panel. For example, the actuator respectively has a coil, and an electromagnetic field generated by the coil is formed and arranged for cooperation with an armature. The actuator is preferably a plunger armature actuator, also known to those skilled in the art by the English name "Voice-Coil-Actuator".

[0020] According to the invention, the fastening step of the installation method comprises: starting to introduce the actuator into a receiving space formed at the panel along an insertion direction; and then engaging an engaging device arranged beside the panel, the engaging device fixing the actuator at least form-fittingly at the panel in a relevant engaging position. According to the invention, the fastening further comprises: blocking during or after the engaging, wherein a blocking device blocks the engaging device in the engaging position in its engaging position.

[0021] After or before fastening the actuator, a fixing step is also provided, wherein a bracket is fixed to the panel via an elastic support device, the bracket being formed for fixing the input device to a load-bearing component, in particular a motor vehicle component, and the elastic support device being for movably and resiliently supporting the panel at the bracket.

[0022] In the fastening step of the present invention, after latching, the actuator is fixed at the panel by the blocking ensured by the blocking device. The material mating connection between the actuator and the panel, such as through an adhesive layer, can be completely omitted, so that the fixation is preferably carried out in an adhesive-free manner. That is, the adhesive not only affects the coupling between the panel and the actuator, but also at least undergoes deterioration of its mechanical properties and adhesion due to aging or depending on the environment. In addition, the adhesion of the actuator makes the related installation method significantly more complex, because in addition to the necessary processing cost (such as plasma surface pretreatment), the curing duration that must be set forces the installation method to have a rest time, which makes the material handling and product handling in the production process more complex. In addition, the latching connection can be produced more quickly and reversibly and can be adjusted subsequently.

[0023] The blocking device is preferably also formed such that, during blocking, the force-fitting fixation of the actuator is achieved by the latching device abutting against the actuator at the latching position. For example, the blocking device pre-tightens the actuator against the panel via the latching device. In particular, the blocking device enables the actuator arranged in the receiving space to be positioned without play in at least one direction, preferably in at least two orthogonal directions.

[0024] The blocking device is preferably also formed to achieve the force-fitting fixation of the actuator by the latching device abutting against the actuator at the latching position. For example, the blocking device pre-tightens the actuator against the panel via the latching device. In particular, the blocking device enables the actuator arranged in the receiving space to be positioned without play in at least one direction, preferably in at least two orthogonal directions.

[0025] In a preferably simple-to-manufacture design, the blocking device is integrally formed with the panel, in particular with a component of the panel. The blocking device is formed, for example, by thermal deformation of the panel material, thereby setting the action on the latching device.

[0026] According to a preferred design, the blocking device includes a pin with a head and a corresponding drill hole in the panel for fixing the pin in the drill hole in a form-fitting, force-fitting or material-fitting manner. According to another design, the blocking device includes a screw with a head and a corresponding drill hole in the panel for fixing the screw in the drill hole in a form-fitting, force-fitting or material-fitting manner. Preferably, it relates to a screw with a self-tapping thread. The head is provided, for example, with an access portion for a tool.

[0027] At least the head preferably interacts with the latching device in the end position. The head, for example, abuts directly against a latching projection belonging to the latching device. The head can be shaped here, for example, by thermal deformation or the like.

[0028] In the insertion end position of the actuator, the actuator is preferably engaged from behind by the latching device, in particular a latching projection belonging to the latching device, in order to fix the actuator in a direction opposite to the insertion direction. Here, the blocking device is preferably formed such that it fixes the actuator in a force-fitting manner, preferably without play, in a direction perpendicular to the insertion direction, preferably in directions perpendicular and parallel to the insertion direction.

[0029] The deflection direction or the oscillation direction of the actuator, preferably at least the main deflection direction or the main oscillation direction, is preferably perpendicular to the insertion direction.

[0030] The axial direction of the borehole, which is predefined, for example, by the longest extension direction of the borehole, is preferably parallel to the insertion direction.

[0031] The panel has a frame on its side facing away from the operator, and the frame forms ribs that define the receiving space. The frame is formed, for example, at least in part from a translucent or transparent material in order to provide a light conductor. The light conductor is used, for example, to backlight an illumination surface associated with the operating surface with the light of a light source fixed at the support.

[0032] At least one of the ribs of the frame preferably forms a stop surface, for example, by a tab extending perpendicular to the insertion direction, in order to predetermine the insertion end position. This ensures the positioning accuracy of the actuator because thereby the position of the actuator is predefined only by the frame and is not affected, for example, by the relative arrangement of the frame and other components of the panel. At least the frame is preferably manufactured in a single injection molding step. Description of the Drawings

[0033] The invention and the technical environment are explained in detail below with the aid of the drawings. It should be noted that the drawings show particularly preferred implementation variants of the invention, but the invention is not limited to these implementation variants. The drawings schematically show:

[0034] Figure 1 A perspective view of an embodiment of the input device 1 according to the invention;

[0035] Figure 2 Shows the input device 1 according to the invention in Figure 1 The embodiment shown in Figure 1 Cross-sectional view belonging to Detailed Description of the Invention

[0036] Figure 1An embodiment of the input device 1 of the present invention is shown. The input device 1 of the present invention has a bracket 3, which is used to fix the input device 1 to a vehicle component, such as to a dashboard or a lining of the passenger compartment. The bracket 3 is formed, for example, from thermoplastic or zamak. In addition, according to the present invention, a panel 2 is provided, which is supported on the bracket 3 in a movably and resilient manner by means of elastic support devices 10. The support device 9 is formed, for example, from an elastic and simultaneously vibration-damping material, such as an elastomer. The panel 2 forms a plurality of operating surfaces 2a, 2b on the side facing the operator and away from the bracket 3. In the embodiment shown here, a Figure 2 2 , a capacitive touch sensor device for detecting approaching or touching input surfaces 2a, 2b is only partially shown in the figure. In addition to the analysis electronics not shown, the capacitive touch sensor device also includes an electrode assembly applied to the foil substrate 2d. In the embodiment shown, this foil substrate 2d carrying the electrode assembly is injection-molded from the front with thermoplastic to form a panel body 2c, which forms the visible surface of the panel 2 including the operating surfaces 2a, 2b. With the help of the electrode assembly, for example, one or more measurement electric fields electrically overlapping with the operating surfaces 2a, 2b are generated between the electrodes located on the foil substrate 2b and the counter electrodes not necessarily located on the foil substrate, and the measurement electric fields are associated with one or more measurement capacitances. The influence on the measurement capacitance caused by approaching or touching the corresponding operating surfaces 2a, 2b can be detected with the help of the analysis electronics not shown. Therefore, in the present embodiment, the evaluation electronics are designed to generate a control signal for the actuator 11 in the event of a positive detection of a touch, and when this control signal is applied, the actuator realizes a mechanical oscillation or vibration of the panel 2, which is tactilely perceptible to the operator in order to confirm the touch. Therefore, the actuator 11 is fixed to the panel 2 to stimulate the vibration and / or oscillation of the panel 2 in order to generate tactile feedback, in particular for the operator who touches the operating surface 2a, 2b. Figure 2 As shown, the actuator 11 is arranged on the side of the panel 2 facing away from the operator. Here, the actuator 11 is a so-called "voice coil actuator" supported only at the panel 2.

[0037] In order to fix the actuator 11, a latching device 6 in the form of a latching projection is provided beside the panel 2, and the latching device fixes the actuator 11 in a form-fitting manner at the panel 2 in a relevant latching position. In addition, blocking devices 5, 12 are provided so that not only the latching projection of the latching device 5 is blocked in the latching position by the blocking devices 5, 12, but also a force-fitting fixation of the actuator 11 is achieved by the latching device 6 that abuts against the actuator 11 in the latching position. For this purpose, the blocking devices 5, 12 have a head 5a, a screw 5 with a self-tapping thread, and a relevant drill hole 12 for receiving the screw 5. Here, the head 5a of the blocking devices 5, 12 pre-tightens the latching projection belonging to the latching device 6 against the actuator 11, and when screwing in, at the latest when reaching the end position, the head 5a directly acts on the latching projection of the latching device 6.

[0038] Thereby, it is ensured that the actuator 11 is fixed at the panel 2 by the blocking devices 5, 12. A material-fitting connection between the actuator 11 and the panel 2, for example, through an adhesive layer, can be completely omitted, so that the fixation is preferably carried out in an adhesive-free manner. That is, the adhesive not only affects the coupling between the panel 2 and the actuator 11, but also at least undergoes deterioration of its mechanical properties and adhesion due to aging or depending on the environment. In addition, the adhesion of the actuator 11 makes the relevant installation method significantly more complicated because, in addition to the necessary processing process costs (such as plasma surface pretreatment), the curing duration that must be set forces the installation method to have a rest time, which makes the material handling and product handling in the production process more complicated. In addition, the snap connection can be produced more quickly and reversibly and can be adjusted subsequently.

[0039] As Figure 2 As further shown, the panel 2 has a frame 4 on its side facing away from the operator, and the frame is connected to the foil substrate 2d in a material-fitting manner, for example, by back-injecting the foil substrate 2d with a thermoplastic. In addition to the drill hole 12 of the blocking devices 5, 12 and the latching projection of the latching device 6, the frame 4 also forms a plurality of ribs 7a, 7b, and the ribs define a receiving space 8 for receiving the actuator 11. The latching projection of the latching device 6 is formed, for example, by the free end of the rib 7a among the ribs 7a, 7b.

[0040] The frame 4 is formed, for example, at least partially from a translucent or transparent material to provide a light conductor. The light conductor is used, for example, to backlight the lighting surface associated with the operating surfaces 2a, 2b with the light of a light source (not shown) fixed to the bracket 3.

[0041] The actuator 11 can be introduced into the receiving space 8 formed at the panel 2 along the insertion direction E, where Figure 2In the introduced end position shown, the actuator 11 is engaged from behind by an engaging device 6 (here an engaging projection) in order to fix the actuator 11 in a direction opposite to the introducing direction E. Here, the main deflection direction or main swinging direction of the actuator 11 is perpendicular to the introducing direction E in order to minimize the long-term load on the engaging device 6 or the blocking devices 5, 12 in a direction perpendicular to the introducing direction E. Accordingly, the axial direction of the bore 12 is also parallel to the introducing direction E. Additionally, here the blocking devices 5, 12 are formed to fix the actuator 11 force-fittingly and preferably without play in a direction perpendicular to the introducing direction, in such a way that the head 5a acts directly on the engaging projection of the engaging device 6 and pre-tensions it against the actuator 11.

[0042] For the predetermined introduced end position, a stop surface is formed by a tab 9 projecting perpendicular to the introducing direction E on the rib 7b of the ribs 7a, 7b of the frame 8. This ensures the positioning accuracy of the actuator 11 because hereby the position of the actuator 11 is only predetermined by the frame 4 and is not affected, for example, by the relative arrangement of the frame 4 and other components of the panel 2.

Claims

1. An input device (1), comprising: a bracket (3) for fixing the input device (1) to a load-bearing component, in particular to a motor vehicle component; A panel (2) forming an operating surface (2a, 2b) and / or carrying operating components; An elastic supporting device (10) for supporting the panel (2) on the bracket (3) in a movably and resilient manner; an actuator (11) received in the receiving space (8) of the panel (2), for exciting the panel (2) to vibrate and / or swing, so as to generate tactile feedback for an operator who touches the operating surface (2a, 2b) or the operating component; A locking device (6) is arranged next to the panel (2), and the locking device fixes the actuator (11) on the panel (2) in a shape-fitting manner in a relevant locking position, and a blocking device (5, 12) is also arranged so that the locking device (6) can be at least blocked in the locking position by the blocking device (5, 12).

2. The input device (1) according to claim 1, wherein the blocking device (5, 12) is also formed to achieve a force-fitting fixation of the actuator (11) by means of a snap-fit ​​device (6) abutting against the actuator (11) in the snap-fit ​​position.

3. The input device (1) according to one of the preceding claims, wherein the blocking means (5, 12) is formed integrally with the panel (2) or is connected to the panel (2) by material fit.

4. An input device (1) according to one of the preceding claims, wherein the blocking means (5, 12) has a screw (5) or a pin with a head (5a) and an associated drill hole (12) in the panel (2) for form-fitting, force-fitting and / or material-fitting fixing.

5. Input device (1) according to the preceding claim, wherein at least the head (5a) cooperates with the snap-in means (6) in the end position.

6. An input device (1) according to one of the preceding claims, wherein the actuator (11) can be introduced into the receiving space (8) along an introduction direction (E) and is engaged from the rear by the locking device (6) in the introduction end position of the actuator (11) so as to fix the actuator (11) in a direction opposite to the introduction direction (E).

7. The input device (1) according to the preceding claim, wherein the deflection direction or oscillation direction of the actuator (11) is perpendicular to the introduction direction.

8. Input device (1) according to one of the two preceding claims, wherein the axial direction of the bore (12) is parallel to the introduction direction (E).

9. The input device (1) according to one of the preceding claims 5 to 8, wherein the front panel (2) has a frame (4) on its side facing away from the operator, which frame forms ribs (7a, 7b) which define the receiving space (8).

10. The input device (1) according to the preceding claim, wherein at least one of the ribs (7a, 7b) forms a tab (9) for predetermining the introduction end position.

11. Input device (1) according to one of the preceding claims, wherein the actuator (11) is supported only at the panel (2).

12. The input device (1) according to one of the preceding claims, wherein the actuator (11) is a piezoelectric actuator, a vibration motor with an eccentric rotating mass (ERM) or a linear resonant actuator (LRA).

13. Use of an input device (1) according to one of the preceding claims in a motor vehicle.

14. A method for installing an input device (1), comprising the following steps: Providing a panel (2) forming an operating surface (2a, 2b) and / or carrying operating components; An actuator (11) for exciting the panel (2) to vibrate and / or oscillate is fastened to the panel so as to generate tactile feedback for an operator who touches the operating surface (2a, 2b) or the operating component; Wherein the fastening comprises: The actuator (11) is initially introduced into a receiving space (8) formed on the panel (2) along an introduction direction (E); a locking device (6) arranged next to the panel (2) is then engaged, the locking device fixing the actuator (11) on the panel (2) at least in a form-fitting manner in a relevant locking position; and simultaneously or after the engagement, blocking is performed by a blocking device (5, 12) so that at least the locking device (6) is blocked in the locking position by a cooperative action with the blocking device (5, 12); After or before fastening the actuator (11), the bracket (3) is fixed to the panel (2) via an elastic support device (10), wherein the bracket is formed to fix the input device (1) to a load-bearing component, in particular a motor vehicle component, and the elastic support device is used to enable the panel (2) to be movably and resiliently supported on the bracket (3).

15. The installation method according to the preceding claim, wherein the blocking device (5, 12) is also formed so as to achieve force-fitting fixation of the actuator (11) by the locking device (6) abutting against the actuator (11) in the locking position during blocking.

16. The installation method according to any one of the preceding claims 14 or 15, wherein the blocking device (5, 12) is formed integrally with the panel (2) or is connected to the panel (2) by material matching.

17. An installation method according to one of the preceding claims 14 or 16, wherein the blocking device (5, 12) has a screw (5) or a pin with a head (5a) and an associated drill hole (12) in the panel (2) for form-fitting, force-fitting and / or material-fitting fixing.

18. Mounting method according to the preceding claim, wherein at least the head (5a) in the end position cooperates with the snap-in device (6) when blocking.

19. An installation method according to any one of the preceding claims 14 to 18, wherein the actuator (11) is engaged from behind by the locking device (6) in the introduction end position of the actuator (11) so as to fix the actuator (11) in a direction opposite to the introduction direction (E).

20. Mounting method according to the preceding claim, wherein the deflection direction or oscillation direction of the actuator (11) is parallel to the introduction direction (E).

21. Mounting method according to one of the two preceding claims, wherein the axial direction of the bore (12) is parallel to the introduction direction (E).

22. Mounting method according to one of the preceding claims 14 to 21, wherein the panel (2) has a frame (4) on its side facing away from the operator, the frame forming ribs (7a, 7b) defining the receiving space (8).

23. Mounting method according to the preceding claim, wherein at least one of the ribs (7a, 7b) forms a tab (9) for predetermining the introduction end position.

24. Mounting method according to one of the preceding claims 14 to 23, wherein the actuator (11) is supported only at the panel (2) after fastening.

25. Mounting method according to one of the preceding claims 14 to 24, wherein the actuator (11) is a piezoelectric actuator, a vibration motor with an eccentric rotating mass (ERM) or a linear resonant actuator (LRA).

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