Door arrangement of a vehicle with a loudspeaker and vehicle with such a door arrangement

Abstract

Door arrangement (1) of a vehicle (100), comprising: • an exterior door element (2), • an interior door element (3), • a loudspeaker (4) arranged on the inner door element (3), and • a loudspeaker housing (5) which is arranged in a space (6) between the inner door element (3) and the outer door element (2) and covers the loudspeaker (4), • wherein the loudspeaker housing (5) has at least one opening (50; 51, 52) which communicates with the space (6) so that the space (6) can be used as a resonance volume for the loudspeaker (4), and • wherein the at least one opening (51, 52) is oriented such that a principal component (91) of a normal vector (90) of the at least one opening (51, 52) is parallel to a longitudinal axis (102) of the vehicle (100).

Description

[0001] The present invention relates to a door arrangement of a vehicle with a loudspeaker. A further aspect of the invention relates to a vehicle with a door arrangement that includes a loudspeaker.

[0002] In current door designs, loudspeakers are positioned in a space between the inner and outer door panels. To produce a sound that can be heard by the occupants inside the vehicle, a loudspeaker diaphragm is moved back and forth. This causes the air in front of the diaphragm to alternately compress and expand, thus generating sound waves. However, the diaphragm, which can be made of paper, for example, is very thin and therefore cannot effectively prevent external noise, such as tire noise, from entering the vehicle's interior. To solve this problem, current door designs include designs in which the loudspeaker is covered by a closed housing. This housing blocks external noise, preventing it from reaching the loudspeaker diaphragm.However, for the loudspeaker to function acoustically, the enclosed housing must be correspondingly large. Such a housing involves high costs and considerable assembly effort.

[0003] DE 296 14 826 U1 discloses a protective device with a cover which is arranged over the back of a loudspeaker and extends at least into the interior of the doors, through the wall made of insulating plastic material which separates the structure for the sliding movement of the windows from the structure directed towards the interior of the vehicle, which is fitted with panels.

[0004] Further state of the art is shown in DE 20 2011 000 772 U1, US 4790407 A, DE 69501389 T2, DE 297 11 895 U1, EP 2654319 A2, US 2001038228 A1, EP 2119598 A1 and US 5996727 A.

[0005] It is therefore an object of the present invention to propose a door arrangement with a loudspeaker that enables a reduction of external noise in the vehicle interior as well as an optimized functioning of the loudspeaker without great assembly effort.

[0006] This problem is solved by combining the features of the independent claim.

[0007] In particular, the door assembly of a vehicle comprises an outer door element, an inner door element, a loudspeaker arranged on the inner door element, and a loudspeaker housing. The loudspeaker housing is located in a cavity between the inner and outer door elements and covers the loudspeaker. Furthermore, the loudspeaker housing has at least one opening that communicates with the cavity, allowing the cavity to be used as a resonance volume for the loudspeaker. The at least one opening is also oriented such that a principal component of a normal vector of the at least one opening is parallel to a longitudinal axis of the vehicle.

[0008] In other words, preferably, the interior of the speaker enclosure communicates with the space within the speaker enclosure via the opening of the speaker enclosure.

[0009] In the proposed door arrangement, ambient noise entering the space between the door and the door frame through the outer door element is attenuated and deflected by the speaker housing, preventing it from reaching the speaker diaphragm altogether or causing it to reach the diaphragm with very low energy. This reduces the amount of ambient noise entering the vehicle's interior, making it barely perceptible to the occupants. Simultaneously, the volume of the space between the speaker housing and the space between the doors can be used as a resonance chamber through at least one opening. Since the speaker housing itself does not require a large interior volume, it can be made smaller. This simplifies the design of the door assembly and reduces costs. Furthermore, optimized acoustic performance of the speaker can be achieved without interference from external noise.

[0010] Within the scope of the invention, the term "loudspeaker" refers in particular to a diaphragm with a drive unit that sets the diaphragm in motion.

[0011] The phrase "covers the loudspeaker" means, in particular, that the part of the loudspeaker located in the space between the housing and the vehicle's interior is covered by the loudspeaker housing. The part or side of the loudspeaker facing the vehicle's interior is not covered by the loudspeaker housing, so that sound produced by the loudspeaker can be heard inside the vehicle.

[0012] Preferably, the loudspeaker housing is arranged or attached to the inner door element.

[0013] The loudspeaker is specifically arranged in or inserted into an opening of the inner door element, so that a sound generated by the loudspeaker can be perceived in the interior of the vehicle.

[0014] The loudspeaker housing is preferably arranged on the inner door element in such a way that, in the mounted state, the loudspeaker housing encloses a volume (air space) which is connected to the space between the two via the provided at least one opening.

[0015] Preferably, the outer door element and the inner door element are connected to each other.

[0016] The outer door element and / or the inner door element are preferably each made of sheet metal. The outer door element is to be understood as the outer door panel and the inner door element as the inner door panel.

[0017] According to a preferred embodiment of the invention, the inner door element is designed in two parts. Advantageously, one part is mounted on top of the other. Preferably, one part (first part) is designed as a metal sheet (inner door panel). The other part (second part) is preferably designed as a lightweight plastic support.

[0018] The inner door panel and the outer door panel, in combination, correspond in particular to a door shell of the vehicle.

[0019] Within the scope of the invention, the loudspeaker housing is also referred to as an adapter housing or snorkel.

[0020] Preferably, at least one opening of the loudspeaker housing has a cross-section of at least 0.0015m². 2 , preferably of at least 0.0030 m 2 , especially preferred from 0.0045m 2 , on. This optimizes the acoustic behavior of the loudspeaker.

[0021] The loudspeaker housing preferably has a plurality of openings, each communicating with the space between them. The sum of the cross-sectional areas of all openings is preferably at least 0.0015 m². 2 , preferably at least 0.0030 m 2 , especially preferred 0.0045m 2 .

[0022] The sum of the cross-sectional areas of all openings is preferably less than 80% of the diaphragm area of ​​the loudspeaker.

[0023] Furthermore, preferably, the at least one opening is arranged above the loudspeaker in a direction parallel to a vertical axis of the vehicle. This prevents unwanted noises propagating from bottom to top, such as tire noise, from easily entering the at least one opening. Advantageously, the loudspeaker housing has no opening in its lower region. In other words, the loudspeaker housing is advantageously closed from below or in a region below the loudspeaker.

[0024] The loudspeaker is positioned, in particular, in a direction parallel to a vertical axis of the vehicle above the center of a wheel / tire, and especially preferably above the highest area of ​​a wheel / tire of the vehicle.

[0025] Within the scope of the invention, a principal component of the normal vector is to be understood in particular as the largest component of the normal vector. The normal vector is directed perpendicularly outwards towards the at least one opening.

[0026] It should be noted that the normal vector of the at least one opening is to be understood as a normal vector of a hypothetical loudspeaker enclosure surface at the location of the at least one opening.

[0027] Furthermore, at least one opening is located in an area of ​​the loudspeaker housing that faces away from any source of unwanted noise from the vehicle. This makes it more difficult for unwanted noise from the source to propagate to the opening.

[0028] “Turned away” means in particular that the minimum distance between the area of ​​the loudspeaker housing and the source of the disturbing noise is greatest.

[0029] It can also be advantageous if at least one area of ​​a surface of the loudspeaker housing opposite the outer door element is shaped in such a way that sound entering the space through the outer door element is directed away from the at least one opening.

[0030] In particular, the area is inclined in a direction parallel to a vertical axis of the vehicle and / or in a direction parallel to a normal vector of the at least one opening towards the outer door element.

[0031] This means that any noise reaching the speaker housing is directed back to the outer door element. This has the advantage of diverting the noise away from at least one opening and further attenuating it.

[0032] Preferably, at least one area of ​​the loudspeaker housing borders on at least one opening.

[0033] In other words, preferably at least one area of ​​the loudspeaker housing is adjacent to the at least one opening.

[0034] Preferably, the opening has a first opening and a second opening, the first opening and the second opening being arranged directly opposite each other. This allows interfering noises entering the loudspeaker housing through the first and second openings to be attenuated against each other due to the opposing directions of the interfering noises.

[0035] “Directly opposite each other” means in particular an overlap of at least 80%, preferably at least 90%, most preferably 100% of a cross-sectional area of ​​the smaller opening.

[0036] Preferably, the ratio between the loudspeaker enclosure volume (interior / air space of the loudspeaker enclosure) and the intermediate space volume (air space) is less than 1, preferably less than 0.8, and more preferably less than 0.6.

[0037] The loudspeaker housing is preferably designed such that the interior of the loudspeaker housing is limited by the loudspeaker housing, the loudspeaker and the inner door element, in particular the second part.

[0038] Furthermore, the invention relates to a vehicle with a door arrangement as previously described.

[0039] The vehicle can be, in particular, a motor vehicle.

[0040] An electric vehicle is particularly preferred. The use of a previously described door arrangement in an electric vehicle is especially advantageous because the noise level of an electric vehicle, particularly compared to a conventional car, is low thanks to its quiet electric motors. With the proposed door arrangement, external noise, which would otherwise be perceived in the passenger compartment of the electric vehicle and thus drown out the sound of the loudspeaker, is deflected and attenuated.

[0041] Further details, features and advantages of the invention will become apparent from the following description and the figures of exemplary embodiments, wherein identical or functionally identical components are designated by the same reference numeral. The figures show: Fig. 1 a highly simplified, schematic view of a door arrangement according to a first embodiment of the present invention, Fig. 2 a simplified, schematic perspective view of an area of ​​the door arrangement according to the first embodiment, Fig. 3 a simplified, schematic sectional view of a sub-area of ​​the door arrangement area of Fig. 2, Fig. 4 a simplified, schematic perspective view of an area of ​​the door arrangement according to a second embodiment, Fig. 5 a simplified, schematic sectional view of a sub-area of ​​the door arrangement area of Fig. 4, and Fig. 6 A simplified, schematic further sectional view of the sub-area of ​​the door arrangement area of Fig. 4.

[0042] The following refers to Fig. 1 to 3 describe in detail a door arrangement 1 of a vehicle 100 according to a first embodiment of the present invention.

[0043] Fig. Figure 1 schematically shows an area of ​​the vehicle 100 where the door arrangement 1 is provided. The door arrangement 1 separates an interior (passenger compartment) 103 of the vehicle 100 from an exterior space 200. The vehicle 100 can be, for example, a motor vehicle or an electric vehicle.

[0044] The door assembly 1 comprises an outer door element 2, an inner door element 3, a loudspeaker 4 arranged on the inner door element 3, and a loudspeaker housing 5. Fig. Figure 1 also shows a door panel 105 on the inner door element 3.

[0045] The loudspeaker 4 is positioned in a direction parallel to a vertical axis 101 of the vehicle 100 above a tire 104 of the vehicle 100.

[0046] In door arrangement 1, the loudspeaker housing 5 is arranged in a space 6 between the inner door element 3 and the outer door element 2.

[0047] In particular, the speaker housing 5 is attached or fastened to the inner door element 3.

[0048] Furthermore, the loudspeaker 4 is inserted into an opening 30 of the inner door element 3. Thus, a first part of the loudspeaker 4 is located in the space 6 and faces the outer door element 2. A second part of the loudspeaker 4 faces the interior 103 of the vehicle 100.

[0049] The speaker housing 5 covers the speaker 4. This means in particular that the part of the speaker 4 which is located in the space 6 and faces the outer door element 2 is covered by the speaker housing 5.

[0050] Furthermore, the loudspeaker housing 5 has an opening 50 which communicates with the space 6. Thus, an interior space (air space) 53 of the loudspeaker housing 5 is connected to the space 6. The space 6 therefore serves as a resonance volume for the loudspeaker 4, which is thus designed as a woofer.

[0051] In addition, an external noise 201, such as the rolling noise of the tire 104, can be deflected and attenuated by the loudspeaker housing 5.

[0052] The opening 50 is located in an area 54 of the loudspeaker housing 5, which faces away from the tire 104, which acts as a source of unwanted noise. This makes it more difficult for the unwanted noise 201 caused by the tire 104 to propagate to the opening 50.

[0053] The area 54 of the loudspeaker housing 5, in which the opening 50 is located, is positioned parallel to the loudspeaker 4 in a direction parallel to the vertical axis 101 of the vehicle 100. Therefore, the interfering noise 201 must travel a long distance before it even reaches the opening 50. The longer the path to the opening 50, the more the energy and thus the pressure of the interfering sound wave is reduced.

[0054] In particular, the opening 50 is arranged in a direction parallel to the vertical axis 101 of the vehicle 100 above the loudspeaker 4. Thus, disturbance noises that propagate from bottom to top, such as rolling noise from the tire 104, cannot easily enter the opening 50.

[0055] The speaker housing 5 has no opening in the lower area where the speaker 4 is positioned.

[0056] Fig. Figure 2 shows a perspective view of an area of ​​the door assembly 1 as seen from the outside (direction from the exterior space 200 to the interior space 103 of the vehicle). For illustrative purposes, in Fig. 2 the outer door element 2 has been removed.

[0057] As from Fig. As can be seen in Figure 2, the interior door element 3 comprises a first part 31 and a second part 32. In particular, the first part 31 is designed as a metal sheet, while the second part 32 is designed as a lightweight plastic support. The second part 32 is attached to and connected with the first part 31.

[0058] It is also from Fig. 2. It is evident that the speaker housing 5 is attached to the second part.

[0059] To gain a better insight into the construction of the loudspeaker enclosure 5, it is shown in Fig. 3 a sub-area of ​​the area of ​​door arrangement 1 of Fig. 2 shown in cross-section.

[0060] It can be seen that the opening 50 of the loudspeaker housing 5 is oriented such that a principal component 91 of a normal vector 90 of the opening 50 is parallel to the vertical axis 101 of the vehicle 100. This ensures that the interference noise 201 must first be deflected, in particular by approximately 180°, in order to enter the interior 53 of the loudspeaker housing 5 via the opening 50. This deflection further reduces the energy of the interference noise 201.

[0061] The opening 50 of the loudspeaker housing 5 has a cross-section of at least 0.0015m² 2 , preferably of at least 0.0030 m 2 , especially preferred from 0.0045m 2 , on. Thus, the space 6 is optimally used as a resonance chamber for the loudspeaker 5.

[0062] Out of Fig. It is further shown that the opening 30, in which the loudspeaker 4 is arranged, is formed in the second part 32.

[0063] The following refers to the Fig. Sections 4 to 6 describe a door arrangement according to a second embodiment of the present invention.

[0064] The door arrangement 1 according to the second embodiment differs fundamentally from that according to the first embodiment in the number of openings provided in the loudspeaker housing 5 and their arrangement.

[0065] Thus, the loudspeaker housing 5 of the door arrangement according to the second embodiment has a first opening 51 and a second opening 52.

[0066] The first opening 51 and the second opening 52 are arranged directly opposite each other ( Fig. 5) Due to this arrangement, interfering noises 202 and 203 enter the interior 53 of the loudspeaker housing in opposite directions. Thus, the interfering noises 202 and 203 can be attenuated relative to each other.

[0067] “Directly opposite each other” in this case means a 100% overlap of the cross-sectional area of ​​the second opening 52 by the first opening 51 in a direction parallel to the vertical axis 101 of the vehicle 100. The first opening 51 has a larger cross-section than the second opening 52.

[0068] Furthermore, the sum of the cross-sectional areas of the first opening 51 and the second opening 52 is at least 0.0015m 2 , preferably at least 0.0030 m 2 , especially preferred 0.0045m 2 .

[0069] In particular, both openings 51, 52 are arranged in a direction parallel to the vertical axis 101 of the vehicle 100 above the loudspeaker 4.

[0070] In contrast to the opening 50 of the loudspeaker housing 5 according to the first embodiment, here the first opening 51 and the second opening 52 are not formed in an area of ​​the loudspeaker housing 5 that is opposite the loudspeaker 4, but on the sides of the loudspeaker 4 in a direction parallel to the longitudinal axis 102 of the vehicle 100.

[0071] Furthermore, both the first opening 51 and the second opening 52 are oriented such that a principal component 91 of a normal vector 90 of the respective opening is parallel to the longitudinal axis 102 of the vehicle 100. For the sake of clarity, however, in Fig. 5 only the normal vector of the first opening 51 with its components is shown.

[0072] Furthermore, this arrangement of the first opening 51 and the second opening 52 can also prevent the ingress of a disturbing noise 204, which is caused by the aerodynamic effects around an exterior mirror 106 of the vehicle 100.

[0073] The first opening 51 and the second opening 52 are each located in a region 54 of the loudspeaker housing 5, which faces away from the tire 104, the main source of noise for the loudspeaker 4. Furthermore, the region of the loudspeaker housing 5 containing the first opening 51 also serves the exterior mirror 106. The exterior mirror 106 acts as a secondary source of noise for the loudspeaker 4.

[0074] Out of Fig.6 It is further evident that an area 55 of a surface of the loudspeaker housing 5 opposite the outer door element 2 is shaped in such a way that sound entering the space 6 through the outer door element 2 is directed away from the second opening 52.

[0075] In particular, area 55 is inclined towards the outer door element 2. Advantageously, area 55 of the loudspeaker housing 5 borders the second opening 52.

[0076] Thus, any interference noise striking the speaker housing 5 is directed back to the outer door element 2. This has the advantage that the interference noise, or at least a part of it, is diverted away from the second opening 52 and simultaneously further attenuated. Reference symbol list: 1 Door arrangement 2 exterior door elements 3 Interior door element 4 speakers 5 speaker enclosures 6 spaces 30 Opening of the inner door element 31 first part of the interior door element 32 second part of the interior door element 50 Opening the speaker housing 51 First opening of the speaker housing 52 second opening of the speaker housing 53 Interior (air space) of the loudspeaker enclosure 54 Area of ​​the loudspeaker enclosure 55 Area of ​​the loudspeaker enclosure 90 Normal vector of the opening 91 Main component of the opening 100 vehicles 101 Vertical axis of the vehicle 102 Longitudinal axis of the vehicle 103 Interior / Passenger compartment of the vehicle 104 tires 105 Door trim 106 Exterior mirrors 200 Space outside the vehicle 201 Interference noise 202 Interference noise 203 Interference noise 204 Interference noise

Claims

[1] Door arrangement (1) of a vehicle (100), comprising: • an exterior door element (2), • an interior door element (3), • a loudspeaker (4) arranged on the inner door element (3), and • a loudspeaker housing (5) which is arranged in a space (6) between the inner door element (3) and the outer door element (2) and covers the loudspeaker (4), • wherein the loudspeaker housing (5) has at least one opening (50; 51, 52) which communicates with the space (6) so that the space (6) can be used as a resonance volume for the loudspeaker (4), and • wherein the at least one opening (51, 52) is oriented such that a principal component (91) of a normal vector (90) of the at least one opening (51, 52) is parallel to a longitudinal axis (102) of the vehicle (100). [2] Door arrangement according to claim 1, wherein the at least one opening (50; 51, 52) has a cross-section of at least 0.0015m 2 , preferably of at least 0.0030 m 2 , especially preferred from 0.0045m 2 , exhibits. [3] Door arrangement according to claim 1 or 2, wherein the at least one opening (50; 51, 52) is arranged in a direction parallel to a vertical axis (101) of the vehicle (100) above the loudspeaker (4). [4] Door arrangement according to one of the preceding claims, wherein the at least one opening (50; 51) is arranged in an area of ​​the loudspeaker housing (5) which is directed away from a source of disturbance noise (104) of the vehicle (100). [5] Door arrangement according to one of the preceding claims, wherein at least one area (55) of a surface of the loudspeaker housing (5) opposite the outer door element (2) is shaped such that sound entering the space (6) through the outer door element (2) is directed away from the at least one opening (52). [6] Door arrangement according to claim 5, wherein the at least one area (55) adjoins the at least one opening (52). [7] Door arrangement according to any one of claims 1 to 6, wherein the at least one opening has a first opening (51) and a second opening (52), wherein the first opening (51) and the second opening (52) are arranged directly opposite each other. [8] Vehicle (100) comprising a door arrangement (1) according to any of the preceding claims.

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