System for one loudspeaker

Abstract

The invention relates to a system for a loudspeaker (2) for which a main sound direction is provided, wherein the system has a cover (4) comprising several parallel lamellae (6) and at least one mechanism (14) and is configured to cover the loudspeaker (2), wherein each lamella (6) has a rigid inner part (8), two rigid outer parts (10) and two flexible torsion parts (12), wherein the inner part (8) is arranged between the two outer parts (10) and is connected to each outer part (10) via a torsion part (12), wherein all outer parts (10) are fixed in position relative to the loudspeaker (2), wherein each outer part (10) is oriented at an angle of 90° to the main sound direction, wherein the at least one mechanism (14) is configured toto rotate at least one inner part (8) relative to the two outer parts (10) of the lamella (6) and thereby twist the torsion parts (12) and to orient the inner part (8) at an angle between 0° and 90° relative to the main sound direction.

Description

[0001] The invention relates to a system for a loudspeaker and a method for operating a loudspeaker.

[0002] Document US 2023 / 158976 A1 shows a mounting structure for functional components on a fairing part of a vehicle.

[0003] An audio system for a motor vehicle is described in publication GB 2 569 598 A.

[0004] Document US 5 194 700 A describes a connection structure for a functional component of a vehicle.

[0005] A loudspeaker system for a motor vehicle is known from the publication DE 10 2012 003 772 A1.

[0006] The printed document JP S54-35630 U describes a cover for a loudspeaker.

[0007] A loudspeaker arrangement for a motorcycle is known from the publication JP S59-104896 A.

[0008] The publication DE 1 537 609 A describes a mechanical sound direction control for a loudspeaker box.

[0009] Against this background, it was a task to adjust a loudspeaker appropriately.

[0010] This problem is solved by a system and a method with the features of the independent claims. Embodiments of the system and the method are described in the dependent claims and the description.

[0011] The system according to the invention is designed for a loudspeaker or electromechanical sound transducer for which a main sound direction is provided. The system has a cover that can be opened and / or closed, which has several louvers arranged parallel to each other and at least one mechanism, and is designed to at least partially, optionally completely and / or maximally, cover and / or at least partially, optionally completely and / or maximally, a path of sound from the loudspeaker parallel to the main sound direction. Each louver has a rigid inner part, two rigid outer parts, and two elastically deformable and / or flexible torsion parts. The inner part is arranged between the two outer parts and is connected to each outer part via a torsion part, wherein all outer parts are fixed in position relative to the loudspeaker and / or are fastened, with each outer part orA flat base surface of an outer part is oriented at a so-called primary angle of 90° or perpendicular to the main sound direction and blocks the propagation of sound from the loudspeaker with its base surface. The at least one mechanism is assigned to and connected with an inner part of each lamella. Furthermore, it is configured to rotate and / or pivot the at least one inner part relative to the two outer parts of the lamella, thereby twisting the torsion elements and at least temporarily orienting and / or arranging the inner part or a flat base surface of the inner part at a so-called primary angle between 0° and 90° relative to the main sound direction, whereby the inner part is arranged parallel to the main sound direction at the primary angle of 0°.

[0012] In this configuration, each lamella or inner part is assigned its own mechanism, via which it is connected to at least one motor, usually only one, for moving the inner parts. It is also possible that a common mechanism is provided for several, or possibly all, lamellae or inner parts, connecting them to the at least one motor as a component of the system. Each rigid inner and outer part is cuboid and flat. Each torsion element can be designed as a flexible and / or elastically deformable strip.

[0013] It is intended that all inner parts of all lamellae have the same length, or that both torsion elements of each lamella have the same distance from each other, with the length being at least as great as the width, usually the diameter, of the loudspeaker to be covered. Alternatively, it is conceivable that all torsion elements of all lamellae are arranged on a circle whose diameter is larger than the diameter of the typically round loudspeaker.

[0014] The system's at least one mechanism comprises two bearings and a lever, the two bearings being connected to each other via the lever movably arranged between them, the first bearing being located on the inner part of the lamella, usually attached to it. The second bearing is connected to the motor.

[0015] The system is designed for a loudspeaker in a vehicle, e.g. a motor vehicle, and is usually to be, can be arranged and / or is located in the vehicle or in an interior space thereof.

[0016] In one embodiment, the system also includes a sliding device that can be arranged on or in a wall, e.g., an interior wall of the vehicle, wherein the loudspeaker and the cover are movable along the sliding device, the sliding device having at least one rail for guiding and / or moving the loudspeaker with the cover. The loudspeaker and the cover can be arranged in different positions along the sliding device and temporarily fixed in each position.

[0017] The method according to the invention is provided for operating a loudspeaker for which a main sound direction is defined, along which sound is emitted by the loudspeaker. The loudspeaker is covered by a cover having several parallel lamellae. Each lamella has a rigid inner part, two rigid outer parts, and two elastically deformable and / or flexible torsion parts, wherein the inner part is arranged between the two outer parts and is connected to each outer part via a torsion part. All outer parts are fixed in position relative to the loudspeaker, regardless of the position of the inner parts, and are generally fastened. Each flat base surface of an outer part is oriented at a typically primary angle of 90° perpendicular to the main sound direction.Furthermore, at least one inner part of at least one mechanism, which is assigned to at least one inner part of at least one lamella, is rotated and / or pivoted relative to the two outer parts of the lamella. Typically, each inner part is connected to its own mechanism and, via this mechanism and, if necessary, at least one transmission element, to at least one motor as a drive. In this process, an inner part of each lamella is rotated relative to the two outer parts of that lamella, whereby the torsional elements between the inner part and the two outer parts are twisted and elastically deformed. A flat base surface of the inner part is oriented at the angle, usually primary, between 0° (parallel) and 90° (perpendicular) relative to the main sound direction.

[0018] In this design, the cover creates and / or provides an opening for sound from the loudspeaker, depending on the position or orientation of the internal components or their flat bases relative to the main sound direction. If the internal components are oriented at a maximum angle of 90° (usually the primary angle) and thus perpendicular to the main sound direction, the opening is completely closed. If the internal components are oriented at an acute angle (usually the primary angle) between 0° and 90° to the main sound direction, the opening is partially opened or closed. If the internal components are oriented at a minimum angle (usually the primary angle) of 0° and thus parallel to the main sound direction, the opening is fully or maximally opened.

[0019] It is possible to implement one embodiment of the presented method with one embodiment of the presented system. The cover for the loudspeaker with the louvers can also be designed or described as a loudspeaker blind, which closes and / or opens or releases the sound passage depending on its position or angle.

[0020] The loudspeaker can be moved using the sliding mechanism, whereby the loudspeaker and its cover can be moved manually and / or via an additional motor of the sliding mechanism and positioned at a location suitable for a listener. Furthermore, the sound from the loudspeaker, typically its volume or intensity and possibly also its frequency, can be mechanically controlled by the cover, i.e., regulated and / or controlled, by pivoting the internal parts to change the size of the opening. It is also possible to couple the cover and / or the sliding mechanism with at least one function, at least one device, and / or at least one operating situation of a vehicle in which the loudspeaker and the system are located.This allows the cover, which is still open during a journey, to be automatically closed when the vehicle is parked and automatically opened the next time the vehicle is started.

[0021] Each inner and outer part is made of a rigid material or solid, e.g., plastic or metal. Each torsion part is made of an elastically deformable plastic, e.g., rubber.

[0022] It is also possible that the internal parts, external parts and torsion parts are coated with plastic or synthetic wood.

[0023] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations specified, but also in other combinations or on their own, without leaving the scope of the present invention.

[0024] The invention is schematically illustrated with reference to embodiments in the drawing and is described schematically and in detail with reference to the drawing. Fig. 1a, Fig. 1b, Fig. 1c, Fig. Figure 1d shows a schematic representation of an embodiment of the system according to the invention in top view and during the execution of an embodiment of the method according to the invention in different spatial positions. Fig. 2a, Fig. 2b, Fig. Figures 2c show details of the embodiment of the system according to the invention. Fig. 1 when carrying out an embodiment of the method according to the invention in a first position. Fig. 3a, Fig. 3b, Fig. 3c, Fig. Figure 3d shows details of the embodiment of the system according to the invention when carrying out the embodiment of the method according to the invention in a second position. Fig. 4a, Fig. 4b, Fig. 4c, Fig. Figure 4d shows details of the embodiment of the system according to the invention when carrying out the embodiment of the method according to the invention in a third position.

[0025] The figures are described in a coherent and comprehensive manner. The same reference symbols are assigned to the same components.

[0026] The in Fig. The embodiment of the system according to the invention, shown in plan view 1a, is provided for a loudspeaker 2 and has a cover 4 comprising several parallel lamellae 6. The cover 4 is positioned directly in front of the loudspeaker 2. The loudspeaker 2, or a diaphragm thereof, is rotationally symmetrical, in this case circular.

[0027] During operation, the loudspeaker 2 converts electrical signals into sound, which is emitted into the room in a main sound direction oriented parallel to a central axis of symmetry of the loudspeaker 2. In the embodiment of the method according to the invention, different positions are used for the louvers 6 of the cover 4 ( Fig. 2a, Fig. 2b, Fig. 2c, Fig. 3a, Fig. 3b, Fig. 3c, Fig. 3D, Fig. 4a, Fig. 4b, Fig. 4c, Fig. 4d) adjusted relative to the loudspeaker 2 located behind it, whereby the sound from the loudspeaker 2 is allowed to pass into the room to varying degrees through a respective opening in the cover 4.

[0028] It is intended here that the speaker 2 and the system for an interior 30 ( Fig. 1b, Fig. 1c, Fig. 1d) of a vehicle, e.g., a motor vehicle. Within this interior space 30, a front seat 32a and a rear seat 32b for vehicle occupants are arranged. The interior space 30 is separated from the vehicle's surroundings by a body. A front window 34a and a rear window 34b are arranged in the body. The interior space 30 is bounded by an interior wall in which a sliding device 36, as a component of the system, is arranged below the windows 34a and 34b. This sliding device extends along and / or within the interior wall in the longitudinal direction of the vehicle.

[0029] The loudspeaker 2 is covered by the cover 4, which is located in front of and / or on top of the loudspeaker 2, from its surroundings and thus from the interior space 30. In the embodiment of the method according to the invention, the loudspeaker 2 covered by the cover 4 is moved along the sliding device 36 relative to the seats 32a, 32b, whereby it is temporarily arranged at different positions in and / or on the inner wall, here, for example, in a first position next to the front seat 32a ( Fig. 1b), in a second spatial position between both seats 32a, 32b ( Fig. 1c) and in a third spatial position next to the rear seat 32b.

[0030] Like the others Fig. 2a, Fig. 2b, Fig. 2c, Fig. 3a, Fig. 3b, Fig. 3c, Fig. 3D, Fig. 4a, Fig. 4b, Fig. 4c, Fig. As shown in Figure 4d, each lamella 6 has a rigid inner part 8, two rigid outer parts 10, and two rotatable and / or twistable elastic deformable and / or flexible torsion parts 12. In each lamella 6, the inner part 8 is arranged centrally between the two torsion parts 12, which in turn are arranged between the two outer parts 10, with the inner part 8 being connected to each outer part 10 via a torsion part 12. Each inner part 8 has a length that is at least as large as a width, here a diameter, of the loudspeaker 2, and the torsion parts 12 of a lamella 6 are spaced apart from each other by a distance corresponding to the length of the inner part 8 located between them.

[0031] It is intended that all external parts 10 are fixedly arranged or positioned relative to the loudspeaker 2. Furthermore, an inner edge of each external part 10 is connected to a torsion element 12, and an outer edge is attached to a support (not shown), e.g., a strut and / or a frame of the cover 4. The flat base surfaces of the fixed external parts 10 are oriented perpendicular to the main sound direction.

[0032] Furthermore, an outer edge of a torsion part 12 is connected to the inner edge of an outer part 10, and an inner edge of this torsion part 12 is connected to an edge of the inner part 8. Each inner part 8 and each outer part 10 is cuboid and flat in all positions and each has two rectangular bases arranged parallel to each other. In addition, each inner part 8 of each lamella 6 is assigned a mechanism 14 as a component of the system. The mechanism 14 has a first bearing 16, a lever 18, and a second bearing 20. The first bearing 16 is attached to a rear or internal base of each inner part 8. The rear base is in a first position ( Fig. 2a, Fig. 2b, Fig. 2c) facing the loudspeaker 2, whereas a front or external base surface faces the interior 30 in the first position. In this position, both base surfaces of the inner part 8 are oriented at a maximum primary angle of 90° and thus perpendicular to the main sound direction. In the first position, the cover 4 is completely closed. The outer edge and the inner edge of the torsion part 12 are arranged parallel to each other. In this embodiment, a first bearing 16 is arranged at the edge of an inner part 8 next to an inner edge of an adjacent torsion part 12 and offset from the loudspeaker 2 with respect to the main sound direction.In a further embodiment, each first bearing 16 and each further component of the mechanism 14 is arranged directly adjacent to and / or next to a vertical cylinder, the base of which corresponds to the loudspeaker 2 and which extends along the main sound direction.

[0033] The first bearing 16 is connected via a lever 18 to a second bearing 20, which is connected directly or indirectly via at least one transmission element (not shown) to a motor (not shown). It is possible that the system has a single motor for all the internal parts 8 of all the slats 6 of the cover, which are usually connected to this motor via transmission elements.

[0034] In this embodiment of the method, the inner parts 8 of each lamella 6 are rotated synchronously by the motor via the mechanism 14 relative to the main sound direction and are furthermore temporarily held in different positions, here in addition to the first position ( Fig. 2a, Fig. 2b, Fig. 2c), still in a second position ( Fig. 3a, Fig. 3b, Fig. 3c, Fig. 3d), in which the cover 4 is partially closed and / or open, and a third position ( Fig. 4a, Fig. 4b, Fig. 4c, Fig. 4d), in which the cover 4 is maximally and / or completely open.

[0035] To move each inner part 8 of a lamella 6, the second bearing 20 is rotated by the motor via the at least one transmission element on a circular, closed path 22, the center of which lies on an axis of rotation. When the cover 4 is opened, the second bearing 20 is rotated clockwise from the first position, whereas when the cover 4 is closed, it is rotated counterclockwise from the third position. A circular movement of the second bearing 20 is transmitted by the lever 18 to the first bearing 16 and thus also to the inner part 8, which is thereby pivoted and / or rotated relative to the two outer parts 10 of the lamella 6, whereby each torsion element 12 is also twisted and / or rotated to a different degree.

[0036] In the first position ( Fig. 2a, Fig. 2b, Fig. 2c) In the case of the lamellae 6, all components of each lamella 6, i.e., the inner part 8, the two outer parts 10, and the torsion parts 12 or their base surfaces, are arranged in a common plane, with each lamella 6 being flat and cuboid in shape. The torsion parts 12 are only cuboid in shape in the first position, in which case their flat base surfaces are oriented perpendicular to the main sound direction.

[0037] It is intended that each inner part 8, or each of its base surfaces, is arranged in every position at a primary angle of a maximum of 90° to a minimum of 0° relative to the main sound direction. Furthermore, each inner part 8, or its base surfaces, is also pivoted at a secondary angle of a minimum of 0° to a maximum of 90° relative to the outer parts 10, or their base surfaces. The primary and secondary angles together add up to 90° in every position.

[0038] When the louvers 6 are opened, starting from the first position as the initial position, the inner part 8 is pivoted via the mechanism 14 from the maximum primary angle of 90° and in the second position ( Fig. 3a, Fig. 3b, Fig. 3c, Fig. 3d) arranged at an acute primary angle of less than 90° and greater than 0° relative to the main sound direction, wherein the inner part 8 is also arranged at an acute secondary angle of greater than 0° and less than 90° relative to the two outer parts 10, wherein the torsion elements 12 are each partially twisted when the inner part 8 is rotated or pivoted, and each outer edge of a torsion element 12 is also pivoted and / or rotated relative to its inner edge by this acute secondary angle. In the second position, the cover 4 is either partially closed or partially open. This results in a size G of the passage opening for the sound from the loudspeaker 2, depending on the respective primary or secondary angle. If the primary angle is used, which is spanned or will be spanned with respect to the main sound direction, the following applies to the size G = G0 * cos(primary angle), where G0 is the maximum size of the passage opening.Taking the secondary angle into account, the quantity G = G0 * sin(secondary angle) applies.

[0039] As the louvers 6 are opened further, the inner parts 8 move into the third position ( Fig. 4a, Fig. 4b, Fig. 4c, Fig.4d) is pivoted and / or rotated into its final position, wherein each inner part 8 or its flat base surfaces are arranged at the minimum primary angle of 0° relative to the main sound direction, and wherein each inner part 8 is rotated at the maximum secondary angle of 90° relative to the two outer parts 10 or their base surfaces. Each torsion part 12 is rotated to its maximum extent, with one outer edge and one inner edge of the torsion part 12 arranged at the maximum secondary angle of 90° relative to each other. Both base surfaces of the inner part 8 are oriented by the mechanism 14 in the third position at a minimum primary angle of 0° and thus parallel to the main sound direction, with the cover 4 being opened to its maximum extent and / or completely, the opening of the cover 4 having its maximum possible area G0. REFERENCE MARK: 2 speakers 4 Cover 6 slats 8 Inner part 10 Outdoor part 12 Torsion part 14 Mechanism 16 warehouses 18 levers 20 warehouses 22 lane 30 Interior 32a, 32b Seat 34a, 34b windows 36 Shifting device

Claims

[1] System for a loudspeaker (2) for which a main sound direction is provided, wherein the system has a cover (4) comprising several parallel louvers (6) and at least one mechanism (14) and configured to cover the loudspeaker (2), wherein each louver (6) has a rigid inner part (8), two rigid outer parts (10) and two flexible torsion parts (12), wherein the inner part (8) is arranged between the two outer parts (10) and each is connected to an outer part (10) via a torsion part (12), wherein all outer parts (10) are fixed relative to the loudspeaker (2), wherein each outer part (10) is oriented at an angle of 90° to the main sound direction, wherein the at least one mechanism (14) is configured toto rotate at least one inner part (8) relative to the two outer parts (10) of the lamella (6) and thereby twist the torsion parts (12) and to orient the inner part (8) at an angle between 0° and 90° relative to the main sound direction. [2] System according to claim 1, wherein each lamella (6) is associated with a mechanism (14). [3] System according to claim 1 or 2, wherein all internal parts (8) of all lamellae (6) have the same length. [4] System according to one of the preceding claims, comprising at least one motor, wherein the at least one mechanism (14) comprises two bearings (16, 20) and a lever (18), wherein the two bearings (16, 20) are connected to each other via the lever (18), wherein the first bearing (16) is arranged on the inner part (8) of the lamella (6), wherein the second bearing (20) is connected to the at least one motor. [5] System according to one of the preceding claims, designed for a loudspeaker (2) of a vehicle. [6] System according to one of the preceding claims, comprising a sliding device (36) which is to be arranged on a wall, wherein the loudspeaker (2) and the cover (4) can be moved along the sliding device (36). [7] Method for operating a loudspeaker (2) for which a main sound direction is provided, wherein the loudspeaker (2) is covered by a cover (4) having several parallel lamellae (6), each lamella (6) having a rigid inner part (8), two rigid outer parts (10) and two flexible torsion parts (12), wherein the inner part (8) is arranged between the two outer parts (10) and is connected to each outer part (10) via a torsion part (12), wherein all outer parts (10) are fixed in position relative to the loudspeaker (2), wherein each outer part (10) is oriented at an angle of 90° to the main sound direction, wherein the at least one inner part (8) is rotated relative to the two outer parts (10) of the lamella (6) by at least one mechanism (14), wherein the torsion parts (12) are twisted.wherein the inner part (8) is oriented at an angle between 0° and 90° relative to the main sound direction. [8] Method according to claim 7, wherein a passage opening for sound from the loudspeaker (2) is set by the cover (4) depending on a position of the inner parts (8) relative to the main sound direction, wherein in the case that the inner parts (8) are oriented at an angle of 90° to the main sound direction, the passage opening is closed, wherein in the case that the inner parts (8) are oriented at an acute angle to the main sound direction, the passage opening is partially opened, and wherein in the case that the inner parts (8) are oriented at an angle of 0° to the main sound direction, the passage opening is opened maximally.

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