Microphone system for the interior of a motor vehicle and arrangement

Abstract

Microphone device (10) for an interior (12) of a motor vehicle, comprising a microphone aperture (16) to be arranged on a side (18) of a component (20) of the motor vehicle facing the interior (12), which has at least one sound inlet opening (22) for sound entering the microphone device (10), and comprising a microphone housing (24) to be arranged on a side (26) of the component (20) facing away from the interior (12), which at least partially delimits a receiving chamber (28) in which at least one transducer (30) is arranged, and comprising a sound channel (44) formed by the microphone aperture (16) and / or the microphone housing (24) for guiding the sound entering the microphone device (10) via the sound inlet opening (22) through the component (20) to the transducer (30), wherein the microphone aperture (16) is attached to the microphone housing (24) by means of at least one snap connection.wherein the structural element (20) is designed as a structural component (36) of a headliner (14) of the motor vehicle, the structural component (36) is at least partially made of metal and / or the structural component (36) is designed as a reinforcing sheet, and wherein a trim part (38) of the headliner, designed separately from the structural component (36), is arranged on the inside of the structural component (36) with respect to the interior space (12).

Description

[0001] The invention relates to a microphone device for the interior of a motor vehicle according to claim 1. Furthermore, the invention relates to an arrangement of a microphone device in the interior of a motor vehicle on a headliner according to claim 6.

[0002] DE 10 2022 103 526 A1 discloses a roof arrangement, in particular for a passenger car, with a roof skin comprising at least one roof opening, at least one roof surface element designed for selectively opening or closing the roof opening and / or forming a fixed roof element which has an at least partially transparent viewing area and fills the roof opening, wherein a headliner is provided which is arranged spaced apart below the roof skin and thus together with it defines an installation space and which includes a fascia element which covers at least a part of an interior edge area around the roof opening, and wherein at least one functional device is arranged on the fascia element.

[0003] Furthermore, a roof sensor module comprising a surface component that forms at least a portion of a vehicle roof skin, which acts as an outer sealing surface of the roof sensor module, is known from DE 10 2022 105 178 B3, wherein at least one environment sensor is provided for detecting a vehicle environment, which is connected to at least one cable.

[0004] Furthermore, DE 102 03 599 A1 discloses a microphone assembly of a vehicle hands-free device, comprising a guide and a microphone unit, wherein the microphone unit is reversibly movable between a retracted and an extended position.

[0005] Furthermore, JP H06 - 98 387 A discloses a microphone for noise detection in a cabin for a car, wherein a microphone unit is stowed in a flat frame 3 which has an upper frame and a lower frame which are connected to each other by an elastic holder.

[0006] Furthermore, a microphone installation structure for a shaped ceiling element is known from JP H05 - 58 228 A.

[0007] Furthermore, FR 31 20 032 A1 discloses a device for attaching a microphone to the roof lining of a motor vehicle.

[0008] The object of the present invention is to provide a microphone device for the interior of a motor vehicle and an arrangement of a microphone device in the interior of a motor vehicle on a roof liner, so that the safety of the motor vehicle can be particularly increased.

[0009] This problem is solved according to the invention by a microphone device for the interior of a motor vehicle with the features of claim 1 and by an arrangement of a microphone device in the interior of a motor vehicle on a headliner with the features of claim 6. Advantageous embodiments with expedient further developments of the invention are specified in the remaining claims.

[0010] A first aspect of the invention relates to a microphone device for the interior of a motor vehicle, which is, for example, a passenger car. Preferably, the motor vehicle, particularly in its fully manufactured state, includes the microphone device. The microphone device can be understood to be, in particular, an acoustic sensor device, which can also simply be called a microphone. In particular, the microphone device is designed to detect at least one acoustic signal, that is, to detect sound or sound waves. This means that the acoustic signal or sound can be detected or is detected by means of the microphone device.

[0011] The fact that the microphone device is intended for the interior of the motor vehicle can be understood in particular to mean that the microphone device is to be arranged or positioned at least partially in the interior.

[0012] The microphone device comprises at least one microphone aperture, which can also simply be referred to as an aperture, and which is to be arranged or is arranged on a side of a component of the motor vehicle facing the interior. In other words, the microphone aperture extends at least partially, and in particular predominantly or completely, onto the side of the component facing the interior. The side of the component facing the interior can be understood to mean, in particular, a side of the component pointing towards the interior. The side facing the interior can be referred to as the inside of the component or the front of the component. Because the microphone device is arranged on the side of the component facing the interior, the microphone device is, for example, positioned at least partially further inside the motor vehicle than the component itself.The component is designed, for example, as a structural element, specifically as a reinforcing plate, in the headliner of a motor vehicle. Because the microphone aperture is located on the side of the component facing the interior, it is partially visible from inside the vehicle, meaning it is visible to at least one occupant. In other words, a vehicle occupant, also referred to as a customer, can at least partially perceive the microphone aperture in the headliner.

[0013] The microphone aperture has at least one sound inlet opening, particularly one opening directly into the interior, for example, to allow sound, especially from the interior, to enter the microphone device, i.e., into the interior of the microphone device. This means that the acoustic signal or sound can be transmitted, or is transmitted, via the sound inlet opening into the microphone device, particularly for the purpose of capturing the acoustic signal. This means that the sound inlet opening is provided for the entry of sound or the acoustic signal into the microphone device. Sound can be understood to mean, in particular, sound waves.

[0014] Furthermore, the microphone device comprises at least one microphone housing, which is to be arranged or is arranged on a side of the component facing away from the interior, and which is in particular designed separately from the microphone aperture. In other words, the microphone housing extends at least partially, and in particular predominantly or completely, onto the side of the component facing away from the interior. The side of the component facing away from the interior can be understood to be, in particular, a side of the component pointing away from the interior, that is, for example, towards the surroundings of the motor vehicle. The side of the component facing away from the interior can also be referred to as the outside or back of the component. In particular, the side facing the interior and the side facing away from the interior are opposite sides of the component, that is, sides facing away from each other.Because the microphone assembly comprises at least the microphone aperture and the microphone housing, it is, for example, multi-part, and in particular, a two-part structure. Because the microphone housing is located on the side of the component facing away from the interior, it is, for example, not visible or perceptible from inside the vehicle, i.e., to the vehicle occupants.

[0015] The microphone housing defines a recording space at least partially, and in particular predominantly or completely. In other words, the recording space is at least partially formed by the microphone housing. In particular, the recording space extends at least partially, and preferably predominantly or completely, within the microphone housing. At least one transducer is arranged within the recording space, that is, in particular within the microphone housing. In other words, the transducer extends at least partially, and in particular predominantly or completely, within the recording space or within the microphone housing. The term transducer can be understood to mean, in particular, an acoustic component that converts sound, i.e., airborne sound, for example as alternating pressure vibrations, into corresponding electrical voltage changes as a microphone signal, in particular to detect the aforementioned acoustic signal.In other words, airborne sound, particularly alternating pressure vibrations, can be converted into electrical voltage changes as a microphone signal by means of the transducer. The transducer comprises, for example, at least one diaphragm and at least one transducer, which can be mechanically or electrically coupled to the diaphragm. The diaphragm is designed, for example, to receive the sound, which is directed into the microphone device, particularly through the sound inlet. The transducer converts the sound waves received by the diaphragm into the microphone signal. The microphone signal can also simply be described as an electrical signal.

[0016] The microphone device has at least one sound channel, formed at least partially, and in particular predominantly or completely, by the microphone aperture and / or the microphone housing, for guiding the sound entering the microphone device via the sound inlet opening through the component to the transducer. This means that the sound or acoustic signal entering the microphone device via the sound inlet opening can be guided or is guided through the component to the transducer via the sound channel, in particular to capture the acoustic signal. In other words, the sound entering the microphone device, and in particular the sound channel, via the sound inlet opening can be transmitted to the transducer via the sound channel.For example, the sound channel opens into the interior via the sound inlet opening, particularly directly. The characteristic "through the component" can be understood to mean, in particular, that the sound channel runs through the component, for example, extends through the component, so that the sound waves guided through the sound channel also pass through the component. Thus, the microphone device, for example, has a microphone assembly, also simply referred to as a structure, in which the sound channel is arranged between the sound inlet opening (also referred to as the sound receiving opening to the vehicle interior) and the diaphragm (referred to, for example, as the sound transducer).

[0017] To significantly enhance vehicle safety, particularly to ensure the microphone unit is securely positioned within the vehicle interior, the microphone aperture is attached to the microphone housing by means of at least one snap-fit ​​connection, either directly or indirectly. This means that the microphone aperture is held to the microphone housing by means of, or via, the snap-fit ​​connection. In other words, the microphone aperture is clipped to the microphone housing. The snap-fit ​​connection can be understood to be, in particular, a clip connection, such as a latching connection. The snap-fit ​​connection is, in particular, a positive-locking connection in which, for example, a component deforms elastically and then engages, either releasably or permanently, thus engaging with the microphone housing.In this case, the component being joined is, for example, the microphone grille.

[0018] The snap-fit ​​connection allows the microphone aperture, which the vehicle occupant can see in the headliner, for example, to be clipped into the microphone housing, which is not visible to the customer. This creates a sound channel, designed similarly to a human ear canal, meaning that ambient noise is physically filtered out. The snap-fit ​​connection ensures a particularly secure attachment of the microphone aperture to the microphone housing, which in turn is securely attached to the component. This means that the microphone aperture is attached to the component via the microphone housing, rather than being directly attached to the component itself.This significantly increases safety against the microphone aperture detaching from the microphone housing, for example, in a car accident. This prevents the microphone aperture from detaching during an accident and potentially injuring vehicle occupants by flying around the interior. It is also particularly advantageous that the microphone housing can be attached to the component on the side facing away from the interior. This allows for a particularly secure mounting of the microphone assembly, thus significantly increasing vehicle safety. This can be achieved, in particular, by ensuring that the sound channel extends through the component, meaning that the microphone aperture and the microphone housing are positioned, at least partially, on opposite sides of the component.Furthermore, the snap-fit ​​connection allows the microphone aperture to be made particularly small, thus saving space and / or optimizing the design, for example by keeping the diameter of the microphone aperture very small. The snap-fit ​​connection is therefore primarily a mechanical concept that is particularly cost-effective, space-saving, and / or can be integrated particularly well into the vehicle in terms of packaging and / or design.

[0019] The component is also designed as a structural part of the vehicle's headliner. The structural part is at least partially made of metal and / or is designed as a reinforcing sheet. Furthermore, a separate headliner trim panel is located on the inside of the structural part, facing the interior.

[0020] To ensure particularly secure attachment of the microphone device to the interior, especially to the component, a further embodiment provides that the microphone housing has at least one mounting area, located on the side of the component facing away from the interior, by means of which the microphone device can be attached to the component, either directly or indirectly. In other words, the microphone housing can be attached to the component via the mounting area, thereby enabling the microphone aperture to be attached to the component via the microphone housing and the mounting area.

[0021] To further improve the detection quality when capturing the acoustic signal, the sound channel is provided, on its inner side, at least partially, for example predominantly or completely, preferably at least predominantly, and in particular completely, lined with at least one cladding element. In other words, the walls forming the sound channel are formed from or covered by the cladding element, particularly on the inside. The cladding element is preferably formed at least partially, and in particular predominantly and completely, from a flexible and / or foam-like material. The material is thus, for example, an elastomer or a foam. The cladding element can therefore be referred to as an elastomeric part or a foam part.The sound channel thus features, for example, elastomers or elastic or foam-like walls with particularly high sound-absorbing properties against unwanted background noise in the form of the cladding element. The cladding element is, for example, separate from the microphone housing and / or separate from the microphone grille.

[0022] For example, the cover element is arranged, particularly at least indirectly or directly, on the microphone aperture, and in particular attached to it. Alternatively or additionally, the distribution element is arranged, for example, particularly at least indirectly or directly, on the microphone housing, and in particular attached to it. The cover element can thus be arranged, for example, attached, on the aperture side and / or on the microphone housing side, i.e., on the circuit board side. This allows the sound channel to exhibit particularly good sound transmission properties. Furthermore, the manufacturing effort for the microphone assembly can be kept particularly low, since the cover element can, for example, be pre-mounted on the microphone aperture or on the microphone housing.

[0023] To enable a particularly space-saving design of the microphone device and / or to facilitate its manufacture with minimal effort, a further embodiment provides that the microphone housing has at least one receiving opening and the microphone aperture has a receiving element that forms at least part, and in particular predominantly or completely, of the sound channel, preferably corresponding to the receiving opening. In other words, the sound channel is, for example, at least partially bounded by the receiving element. The receiving element can be understood to be, in particular, a receiving wall. Preferably, the receiving element is, for example, at least partially, and in particular predominantly or completely, received or arranged in the receiving opening, especially with a snap-fit ​​connection.In other words, the receiving element extends at least partially, and in particular predominantly or completely, within the receiving opening, especially when the snap connection is formed.

[0024] A second aspect of the invention relates to an arrangement of at least one microphone device, particularly according to the first aspect of the invention, in the interior of a motor vehicle, on or in a headliner. Advantages and advantageous embodiments of the first aspect of the invention are to be regarded as advantages and advantageous embodiments of the second aspect of the invention, and vice versa. The headliner can be understood to be, in particular, the headliner of the motor vehicle. The interior, which can also be referred to as the vehicle interior, can be understood to be, in particular, a passenger compartment or passenger cell. For example, the headliner at least partially, and in particular predominantly or completely, delimits the interior in the vertical direction of the vehicle.

[0025] The headliner comprises at least one structural component and at least one separate trim component, which is located on the inside of the structural component with respect to the interior. This means that the trim component is located on a side of the structural component facing the interior. In other words, the trim component extends at least partially, and in particular predominantly or completely, on the side of the structural component facing the interior. In particular, the structural component has a higher stiffness and / or strength than the trim component. The structural component is, for example, designed as a reinforcement element, in particular as a reinforcement insert or reinforcement insert, of the headliner. For example, the structural component extends at least partially, and in particular predominantly or completely, within the headliner.The structural component is designed, for example, as a frame or frame element, i.e., frame-shaped. The structural component can therefore be referred to as a roof frame. For example, the structural component is at least partially, and in particular predominantly or completely, made of metal. The structural component is preferably designed as a reinforcing plate. The trim panel is preferably made of a material other than metal. Preferably, the headliner, and thus in particular the structural component of the headliner, is designed separately from the vehicle body, in particular from a roof element of the vehicle body. The vehicle body is, for example, designed as a self-supporting body.For example, the headliner, in particular the structural component, has at least one attachment area above which the headliner, especially on a side of the roof element facing downwards in the vehicle's vertical direction, can be attached or fastened to the roof element, for example, at least indirectly or directly. Thus, the roof element is, for example, at least partially covered by the headliner in the direction of the interior.

[0026] To significantly enhance the safety of the motor vehicle, and in particular to enable a particularly secure placement of the microphone device in the interior or on the headliner, the microphone device is arranged, according to the invention, at least in the area of ​​the structural component, and in particular on the structural component itself. This means that the microphone device is located at least partially in the vicinity, for example, in the immediate vicinity, of the structural component, and, for example, directly on the structural component. In other words, the microphone device is arranged at least partially in the immediate vicinity of the structural component. In other words, the structural component extends at least to the immediate vicinity of the microphone device or / or is extended to that point.

[0027] The invention is based in particular on the following findings and considerations: Windowbags are airbags which, especially to protect the head of a vehicle occupant, can deploy in the area of ​​the side windows of the motor vehicle, thereby covering the side windows, for example, at least partially. This can, for example, prevent the vehicle occupant from hitting their head hard against the side window, as such an impact can be softened by the windowbag. However, when the windowbag deploys, that is, when it moves from its storage position to its protective position, in which, for example, the side window is at least partially covered by the windowbag, particularly high mechanical stresses can occur in the area of ​​the headliner, especially on the headliner itself.These mechanical stresses can be caused by unfolding the window bag.

[0028] Because the microphone unit, for example the microphone housing, is located at least within the area of ​​the structural component, it can be positioned in a section of the headliner that is particularly reinforced by the structural component. This allows the microphone unit to be securely attached to the headliner. This prevents the microphone unit from detaching during the deployment of the airbag in the event of an accident—for example, a microphone grille from a microphone housing, thus preventing the aforementioned clip from breaking. This means that the microphone grille cannot be propelled into the passenger compartment during an accident, thereby preventing the vehicle occupant from being injured by the grille.This significantly increases safety against the microphone aperture detaching from the microphone housing, thereby significantly improving safety against the microphone aperture flying into the passenger compartment and potentially injuring the vehicle occupants. The microphone unit is thus integrated within the structural component, for example, within the structural component itself. This ensures that the structural component or roof frame retains its shape during the deployment of the window airbag, and the microphone unit, particularly its aperture, which is integrated into the headliner or structural component, cannot receive any additional impulse. As a result, the microphone unit, and especially the microphone aperture, remains in position and cannot be ejected into the passenger compartment.The arrangement is particularly advantageous in connection with the microphone device according to the first aspect of the invention, because the design of the microphone device according to the first aspect of the invention allows for a particularly significant reduction in the size of the microphone device as well as a particularly secure attachment of the microphone aperture to the microphone housing by means of the snap connection.

[0029] Furthermore, a microphone aperture is arranged on a side of the structural component facing the interior, which has at least one sound inlet opening for sound entering the microphone device. Additionally, a microphone housing is arranged on a side of the structural component facing away from the interior, which at least partially defines a recording chamber in which at least one transducer is arranged. The structural component is at least partially made of metal and / or is designed as a reinforcing plate.

[0030] To ensure particularly secure mounting of the microphone unit in or on the headliner, a further embodiment allows the microphone unit, especially the microphone housing, to be attached or attachable to the structural component, either directly or indirectly. In other words, the microphone unit, especially the microphone housing, is held or secured to the structural component, for example, directly. This allows the microphone unit to be attached to the structural component with particular security, thereby significantly increasing the safety of the vehicle.

[0031] To ensure particularly secure mounting of the microphone assembly in or on the headliner, the structural component, in a further embodiment, has at least one through-opening through which the microphone assembly, for example, the microphone aperture and / or the sound channel, can be or is already partially routed. In other words, the microphone assembly, for example, attached to the structural component, can be received or accommodated at least partially within the through-opening. This means that the microphone assembly is inserted at least partially into the through-opening. Thus, a hole in the shape of the through-opening for the microphone assembly is cut into the structural component, for example, using a water jet, so that the microphone assembly can then be inserted there.This allows for a particularly stable attachment of the microphone unit to the structural component, ensuring that the microphone unit remains securely in place even when the window bag is deployed. This significantly enhances the vehicle's safety.

[0032] To further enhance vehicle safety, the microphone device is further equipped with a microphone baffle that extends at least partially onto the interior-facing side of the trim panel. In other words, the microphone baffle extends at least partially onto the interior-facing side of the trim panel. The interior-facing side of the trim panel can be understood to mean, in particular, the side of the trim panel pointing towards the interior. The microphone baffle has at least one sound inlet opening, opening directly into the interior, for example, to allow sound, especially from the interior, to enter the microphone device.Furthermore, the microphone device comprises a microphone housing located on the side of the structural component facing away from the interior. This housing at least partially defines a receiving chamber in which at least one transducer is arranged. Additionally, the microphone device has at least one sound channel, formed by the microphone aperture and / or the microphone housing and located at least partially within the through-opening, for guiding sound entering the microphone device through the component to the transducer. This channel is designed to direct sound entering the microphone device via the sound inlet opening through the component to the transducer. This means that the sound channel is contained within the through-opening, at least partially. In other words, the sound channel extends at least partially through the through-opening, that is, across the through-opening and through the component.This allows for particularly secure attachment of the microphone housing, especially at the rear, to the structural component, while at the same time, for example, the microphone aperture can be dimensioned particularly small.

[0033] To further enhance vehicle safety, the microphone system is to be positioned in the rear section of the interior. This means that the microphone system extends at least partially, and in particular predominantly or completely, into the rear section of the interior. The rear section can be understood to be, in particular, a rear area of ​​the interior in the longitudinal direction of the vehicle, in which, for example, a rear row of seats is located. Furthermore, the interior may have, for example, a front section in the longitudinal direction of the vehicle, which is located in front of the rear section. A front row of seats may be located in this front section.This embodiment is based in particular on the following findings and considerations: With microphones intended for the front of the vehicle, the aforementioned flying of the microphone assembly, especially the microphone grille, into the passenger compartment during an accident caused by the deployment of the window bag cannot occur, for example, because the microphones in the front are positioned outside the window bag deployment area. A comparable position outside the window bag deployment area is not possible in the rear of the vehicle, for example, due to space constraints, such as the particularly large glass roofs. The headliner, for instance, shrinks to a particularly narrow strip in the transverse direction of the vehicle between the glass roof and one of the side windows.However, this strip is too narrow, meaning that even if the microphone were positioned within it, it would still be located at least near or within the area where the window bag unfolds. By positioning, and in particular securing, the microphone within the structural component, the microphone located in the rear of the interior can be fixed particularly securely, thus reliably preventing the microphone cover from detaching from the microphone housing during window bag deployment.

[0034] Further advantages, features, and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings. The features and combinations of features mentioned above in the description, as well as those mentioned below in the figure description and / or shown in the figures alone, can be used not only in the combinations specified, but also in other combinations or individually, without departing from the scope of the invention.

[0035] This shows: Fig. 1 a schematic partial sectional view of an arrangement according to the invention; and Fig. 2 a schematic and perspective partial sectional view of an arrangement according to the invention; and Fig. 3 a schematic rear view of a microphone aperture of a microphone device according to the invention; and Fig. 4 a schematic front view of a microphone housing of a microphone device according to the invention; and Fig. 5 a schematic perspective view of a microphone aperture and a microphone housing of a microphone device according to the invention, as well as a roof liner.

[0036] In the figures, identical or functionally equivalent elements are provided with the same reference symbols.

[0037] Fig. Figure 1 shows a schematic partial sectional view of an arrangement of a microphone device 10 in the interior 12 of a motor vehicle on a roof liner 14. Fig. Figure 2 shows the arrangement in a further partial section, which is a schematic and perspective partial sectional view. The microphone device 10 is intended for or designed for the interior 12 of the motor vehicle. Preferably, the microphone device 10 is to be arranged or is arranged in a rear area of ​​the interior 12.

[0038] The microphone device 10 has a microphone aperture 16, which is to be arranged, at least partially, for example predominantly or completely, on a side 18 of a component 20 of the motor vehicle facing the interior 12. The microphone aperture 16 has at least one sound inlet opening 22 for sound entering the microphone device 10. As in Fig. Figure 2 illustrates, for example, that several such sound inlet openings 22 are provided. Sound can be understood to mean, in particular, sound waves and / or airborne sound. The microphone aperture 16 is in Fig. 3 shown in a schematic rear view.

[0039] Furthermore, the microphone device 10 in this case has a microphone housing 24, which is designed separately from the microphone aperture. The microphone housing 24 is to be arranged, at least partially, and in particular predominantly or completely, on a side 26 of the component 20 facing away from the interior 12. The microphone housing 24 at least partially, and in particular predominantly or completely, delimits a recording chamber 28 in which at least one transducer 30 is arranged. The microphone housing 24 is in Fig. 4 shown in a schematic front view.

[0040] The microphone housing 24, for example, has at least one opening 32, which is arranged, for example, in a circuit board of the microphone housing 24. The opening 32, which can also be referred to as a hole, is, for example, as shown in Fig. Figure 4 illustrates the microphone assembly being arranged in a region 34 of the microphone housing 24. For example, the microphone device 10, in particular the transducer 30, has at least one diaphragm, which is located, for example, behind the [unclear text]. Fig. The opening shown in section 4 is located at 32. The membrane, for example, absorbs sound, also known as sound waves, and converts it into an electrical signal.

[0041] In this embodiment, the component 20 is designed as a structural component 36 of the headliner 14. This structural component 36 is, for example, a sheet metal part, in particular a reinforcing sheet. The headliner 14 has a trim part 38 that is designed separately from the structural component 36, which is, for example, Fig. Figure 5 is particularly well illustrated, showing a schematic representation, in particular an exploded view, of the microphone aperture 16, the microphone housing 24, and the headliner 14. In this case, the microphone aperture 16, in particular the sound inlet opening 22, is arranged at least partially on a side 40 of the trim panel 38 facing the interior 12, whereas, for example, the structural component 36, in particular the microphone housing 24, is arranged at least partially, in particular predominantly or completely, on a side of the trim panel 38 facing away from the interior 12.

[0042] To significantly enhance the safety of the motor vehicle, the microphone device 10, for example the microphone housing 24, is arranged, preferably attached, at least partially, to the structural component 36, for example, and in particular directly to the structural component 38. This ensures that, in the event of deployment (also referred to as activation) of at least one window bag, a mounting point of the microphone device, for example on the structural component 36, is not moved at all or only to a minimal extent, thus preventing, for example, the microphone aperture 16 from detaching from the microphone housing 24.The microphone assembly 10 can thus be positioned, for example, in a particularly critical area where especially large impulses and / or forces can occur during a vehicle accident due to the deployment of the window airbag, and specifically without the aforementioned release of the microphone aperture 16. This provides particularly good protection for a vehicle occupant against the microphone aperture 16 flying around inside the vehicle 12 during an accident. This means that it can be prevented from flying into the interior 12, for example, in the rear area of ​​the vehicle 12, during the deployment of the window airbag.In particular, the structural component 36, also referred to as the roof frame, can retain its shape at least essentially when the window bag is deployed, thus preventing the microphone aperture 16 from separating from the microphone housing 24 and flying into the interior 12.

[0043] For example, the microphone housing 24 has at least one mounting area 41 by which the microphone device 10 is held, for example, at least indirectly or directly, on the component 20, that is, in this case, on the structural component 36. The microphone housing 24 is connected to the component 20, for example, by means of a positive fit and / or a force-fit connection via this mounting area 41, and in particular on the side 26 facing away from the interior 12. By mounting the microphone housing 24 via the mounting area 41, a separate sheet metal bracket for mounting the microphone device 10 can, for example, be dispensed with.For example, the component 20 has a recess 20a, located in particular on the side 26 facing away from the interior 12, in which the microphone housing 24 is at least partially arranged or received, in particular to form the attachment of the microphone housing 24 to the component 20 via the attachment area 41. For example, the microphone housing 24 rests, in particular directly, against the component 20.

[0044] To securely attach the microphone aperture 16 to the microphone housing 24, and thereby significantly enhance the safety of the vehicle, the microphone aperture 16 is attached to the microphone housing 24 by means of at least one snap connection, preferably at least indirectly or directly, whereby the microphone aperture 16 and the microphone housing 24 are clipped together. This allows the microphone aperture 16, for example, its outer diameter 43 (visible from the interior 12), to be made particularly small. The outer diameter 43 is, for example, less than 30 mm, less than 25 mm, preferably less than 20 mm. For example, the outer diameter 43 is 18 mm.

[0045] How particularly good in Fig. 1 and in Fig. As can be seen in Figure 5, the headliner 14 in the exemplary embodiment has at least one through-opening 42, which is, for example, at least partially formed by the structural component 36. Thus, for example, the structural component 36 has the through-opening 42. For example, the through-opening 42 is at least partially formed by the trim part 38. This means that the through-opening 42 has, for example, at least a first longitudinal region which is at least partially, in particular predominantly or completely, formed by the structural component 36, and that the through-opening 42 has, for example, at least a second longitudinal region different from the first longitudinal region, which is at least partially, in particular predominantly or completely, formed by the trim part 38.Thus, for example, the structural component 36 has the first length range and the cladding component 38 has, for example, the second length range. For example, the second length range connects to the first length range at least indirectly, and in particular directly, in the direction of the interior 12. In the present case, the microphone device 10, for example, a sound channel 44 of the microphone device 10, is guided at least partially through the passage opening 42, for example, through the first and the second length range, whereby the microphone device 10, in particular the sound channel 44, is arranged or received at least partially in the passage opening 42.The microphone assembly 10 extends, for example, from the side of the component 20 facing the interior, in particular from the side 40 of the trim panel 38 facing the interior 12, across the through-opening 42 to the side 26 of the component 20 facing away from the interior 12. Thus, the microphone assembly 10 is arranged, for example, in a recess in the roof frame in the form of the through-opening 42, i.e., extending through the component 20. This recess is, in this specific case, for example, aligned with the microphone housing 24. For example, the microphone assembly 10, in particular the microphone aperture 16 and / or the microphone housing 24, is attached to the component 20 in the through-opening 42, for example, by being snapped into place on the component 20.

[0046] The sound channel 44 is formed, for example, at least partially, and in particular predominantly or completely, by the microphone aperture 16 and / or the microphone housing 24. Thus, the microphone aperture 16 can, for example, encompass the sound channel 44 or be designed as a mere cover plate that does not encompass the sound channel 44, i.e., is free of the sound channel 44, for example, if the sound channel 44 is enclosed or bounded by walls of the microphone housing 24, in particular a circuit board part of the microphone housing 24. In this case, the sound channel 44 is designed or provided to guide the sound entering the microphone device 10, in particular the sound channel 44, through the component 20, in particular via the through-opening 42, to the transducer 30 via the sound inlet opening 22 or the respective sound inlet opening 22.In particular, the sound channel 44 is arranged or accommodated at least partially in the passage opening 42, especially in the length regions of the passage opening 42. A length 45 of the sound channel 44 is in . Fig. 1 illustrates.

[0047] For example, the sound channel 44 is at least partially, and preferably at least predominantly or completely, lined on its inner side with at least one cladding element 46, which in this case is formed separately from the microphone housing 24 and / or the microphone aperture 16. The cladding element 46 is preferably made of a flexible and / or foam-like material. For example, in a particularly advantageously simple design, the sound channel 44 is configured as a bore-shaped channel in an elastomer insert or an elastomer bonding element in the form of the cladding element 46. The cladding element 46, which is preferably made of an elastomer, is thus located, for example, in the microphone aperture 16 and has, for example, at least one hole, which in particular forms at least part of the sound channel 44.The cladding element 46, or the elastomer, encloses the hole, particularly on the circuit board part, which is also simply referred to as the circuit board. This creates, for example, the sound channel 44, which is, for example, a direct connection from the membrane to the interior space 12, also referred to as the vehicle interior, via the sound inlet opening 22.

[0048] As in Fig. As shown in Figure 4, in this embodiment the microphone housing 24 has a recording opening 48. The recording opening 48 is, for example, oriented towards the rear interior space 12. As shown in Figure 4, the microphone housing 24 has a recording opening 48. Fig. As shown in Figure 3, in this embodiment the microphone aperture 16 has a receiving element 50 which, for example, forms at least partially, and in particular predominantly or completely, the sound channel 44. The cover element 46 is, for example, arranged or received in the receiving element at least partially, and in particular predominantly or completely. For example, the receiving element 50, particularly with a snap-fit ​​connection, is received or arranged in the receiving opening 48 at least partially, and in particular predominantly or completely. The receiving element 50 can thus, for example, be inserted into the receiving opening 48. As a result, the cover element 46 is also arranged or received in the receiving opening 48 at least partially, and in particular predominantly or completely.By arranging or receiving the receiving element 50 in the receiving opening 48, the sound channel 44 is formed, for example.

[0049] As in Fig. As shown in Figure 1, the headliner, for example, has at least one intermediate layer 52 arranged between the trim part 38 and the component 20. The intermediate layer 52 is, for example, at least partially, and in particular predominantly or completely, formed by or from foam. However, it is possible that the intermediate layer 52, as shown in Figure 1, is made of a foam material. Fig. Figure 2 illustrates that it has several layers 54, 56.

[0050] Overall, it is evident that the microphone assembly 10, or rather its arrangement, allows for the integration of a functionally, sizing-wise, cost-wise, and / or design-optimized microphone within the deployment area of ​​the Windows bag. This can result in significant cost savings compared to competitors, as well as a more appealing design. Furthermore, a modular system from an existing, mass-produced microphone can be reused. At the same time, the optimal functionality of the microphone assembly 10 is maintained, for example, through the principle of the sound channel 44.

Claims

[1] Microphone device (10) for an interior (12) of a motor vehicle, comprising a microphone aperture (16) to be arranged on a side (18) of a component (20) of the motor vehicle facing the interior (12), which has at least one sound inlet opening (22) for sound entering the microphone device (10), and comprising a microphone housing (24) to be arranged on a side (26) of the component (20) facing away from the interior (12), which at least partially delimits a receiving chamber (28) in which at least one sound transducer (30) is arranged, and comprising a sound channel (44) formed by the microphone aperture (16) and / or the microphone housing (24) for guiding the sound entering the microphone device (10) via the sound inlet opening (22) through the component (20) to the sound transducer (30), wherein the microphone aperture (16) is attached to the microphone housing (24) by means of at least one snap connection. is attachedwherein the structural element (20) is designed as a structural component (36) of a headliner (14) of the motor vehicle, the structural component (36) is at least partially made of metal and / or the structural component (36) is designed as a reinforcing sheet, and wherein a trim part (38) of the headliner, designed separately from the structural component (36), is arranged on the inside of the structural component (36) with respect to the interior space (12). [2] Microphone device (10) according to claim 1, characterized by that the microphone housing (24) has at least one mounting area (41) by which the microphone device (10) can be held or is held on the component (20). [3] Microphone device (10) according to claim 1 or 2, characterized by, that the sound channel (44) is at least partially, preferably at least predominantly in its circumferential direction, lined on the inside with a cladding element (46) which is made of a flexible and / or foam-like material. [4] Microphone device (10) according to claim 3, characterized by , that the trim element (46) is arranged on the microphone grille (16) and / or on the microphone housing (24). [5] Microphone device (10) according to any one of the preceding claims, characterized by , that the microphone housing (24) has a recording opening (48) and the microphone aperture (16) has a recording element (50) which forms at least part of the sound channel (44) and is received in the recording opening (48). [6] Arrangement of a microphone device (10) in an interior (12) of a motor vehicle on a headliner (14), wherein the headliner (14) comprises a structural component (36) and a trim part (38) formed separately from the structural component (36), which is arranged on the inside of the structural component (36) with respect to the interior (12), wherein the microphone device (10) is arranged at least in the area of ​​the structural component (36), a microphone aperture (16) is arranged on a side (18) of the structural component (36) facing the interior (12), which has at least one sound inlet opening (22) for sound entering the microphone device (10), and a microphone housing (24) is arranged on a side (26) of the structural component (36) facing away from the interior (12), which at least partially delimits a receiving chamber (28) in which at least one sound transducer (30) is arranged,and wherein the structural component (36) is at least partially made of metal and / or the structural component (36) is designed as a reinforcing plate. [7] Arrangement according to claim 6, characterized by , that the microphone device (10) is attached to the structural component (36). [8] Arrangement according to claim 6 or 7, characterized by , that the structural component (36) has a through-opening (42) through which the microphone device (10) is passed at least partially. [9] Arrangement according to claim 8, characterized by , that the microphone device (10) has: a sound channel (44) formed by the microphone aperture (16) and / or the microphone housing (24) and arranged at least partially in the through-opening (42) for guiding the sound entering the microphone device (10) via the sound inlet opening (22) through the structural component (36) to the sound transducer (30). [10] Arrangement according to any one of claims 6 to 9, characterized by , that the microphone device (10) is located in a rear area of ​​the interior (12).

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