Speaker basket for one speaker

Abstract

Loudspeaker basket (20) for a loudspeaker, preferably planar loudspeaker, comprising an angled base body (22) and a fastening section (26) for the direct fastening of a bead (10).

Description

[0001] The invention relates to a loudspeaker basket for a loudspeaker, preferably a planar loudspeaker.

[0002] DE 10 2018 124 261 A1 discloses a planar loudspeaker comprising a flat sound panel and a drive unit for driving the sound panel. The drive unit has a plate-shaped coil carrier with a coil formed thereon and a magnetic device. The coil carrier is arranged in a gap between two magnet units of the magnetic device. A loudspeaker basket is not required. This causes the sound panel to vibrate at the front.

[0003] However, if the planar loudspeaker is designed with diaphragms positioned on the narrow sides, the use of a speaker basket may be beneficial to maximize the width of the surrounds and diaphragms, thus increasing the performance per unit size. Additionally, surrounds with a complex contour require the widest possible interior space to provide the necessary clearance for the surrounds.

[0004] It is therefore an object of the invention to provide a loudspeaker basket for a loudspeaker, a system with a loudspeaker basket and a surround, a loudspeaker and a manufacturing method in which the costs are low and / or the surrounds and membranes can be made as wide as possible and the effective radiation area per side surface of the entire loudspeaker cabinet is maximized and the surrounds have sufficient freedom of movement in the interior.

[0005] This problem is solved by the subject matter and methods of the independent claims.

[0006] According to the invention, the loudspeaker basket is suitable for a loudspeaker or can be used for this purpose.

[0007] The loudspeaker can preferably be a planar loudspeaker, i.e. a flat loudspeaker.

[0008] The loudspeaker basket has an angled base body.

[0009] The base body can, for example, be inserted into a loudspeaker cabinet and attached to it, e.g. by screwing.

[0010] Preferably, the base body can be manufactured in a simple and cost-effective manner.

[0011] The loudspeaker basket has a mounting section for the direct attachment of a surround.

[0012] Preferably, the bead has a fastening region extending in a fastening surface, preferably a fastening plane, and an elongated, preferably rectangular or oval, vibration region arranged within the fastening region.

[0013] The mounting surface is preferably flat. Alternatively, it can be curved and / or bent.

[0014] The contour of the vibration region is preferably designed such that the vibration region extends in sections on different sides of the fastening surface.

[0015] For example, the contour of the bead can be axially symmetrical and / or have a V- and / or W-shaped cross-section at least in sections.

[0016] The surround can, for example, be attached, e.g. glued, to the fastening area directly on the fastening section of the loudspeaker basket.

[0017] Preferably, the surround is permanently attached to the speaker frame. This ensures a secure connection and prevents accidental detachment.

[0018] In addition, fastening materials such as screws can be saved, thus reducing costs.

[0019] Further developments of the invention can also be found in the dependent claims, the description and the accompanying drawings.

[0020] According to one embodiment, the base body comprises or consists of an extruded plastic material and / or metal material, preferably aluminum.

[0021] A base body made of extruded plastic and / or extruded metal is easy and cost-effective to manufacture. Furthermore, such materials are extremely stable.

[0022] Preferably, the base body can be designed as a metal-plastic hybrid component.

[0023] The fastening section can preferably be oriented parallel to the extrusion direction of the base body.

[0024] As an alternative to an extruded material, the base body can comprise or consist of a C-shaped, bent metal profile, e.g. aluminum profile.

[0025] According to a further embodiment, the base body is designed as a square tube.

[0026] For example, the base body can have a rectangular cross-section.

[0027] It was surprising that a square tube could form the base of a loudspeaker basket.

[0028] Square tubes are stable and inexpensive to produce.

[0029] The square tube provides the surround and / or the cone with sufficient space – practically the entire width. This is advantageous for flat speakers, for example, where the cones are arranged on the narrow side, as the overall width on this side is very small. In contrast to a conventional speaker basket, in which the speaker basket only seals off the air volume in the speaker cabinet on one level, the square tube creates an airtight barrier on four levels or sides and can be used as a type of "pre-chamber". The pre-chamber has an internal width that corresponds to the total width of the speaker minus twice the tube wall thickness. This pre-chamber is advantageous for use with surrounds with a complex contour with peaks and valleys, as the valleys of this type of surround that protrude into the tube can bend very far outwards during excursion and require the widest possible pre-chamber.

[0030] In contrast to a conventional loudspeaker cabinet, the pre-chamber can be designed with a very large internal width. This is because the tube can be made of metal, for example, and the two side walls of the tube are stiffened by the sides parallel to the mounting surface. The tube thus has a C-shaped cross-section to the left and right of the surround, which is significantly stiffer than a simple plate or a side wall of the loudspeaker cabinet with the same thin wall thickness.

[0031] According to a further embodiment, the base body has at least one recess for a loudspeaker drive.

[0032] Preferably, the base body has at least or exactly two, three, four, five, or more recesses for loudspeaker drives. The recesses can be arranged next to one another in the longitudinal direction of the base body. For example, two or more loudspeaker drives can be arranged next to one another.

[0033] The recesses can be of the same construction or different, e.g. different sizes.

[0034] The loudspeaker drives, the surrounds and / or membranes, can be of different sizes and, for example, optimized for different frequency ranges.

[0035] The base body can, for example, have one or more hexagonal openings on the back. The speaker drives can be attached to these openings, e.g., using rivet nuts. Additional mounting recesses or rivet nuts can be used to attach the base body to the speaker cabinet.

[0036] According to a further embodiment, the base body is hermetically sealed at the front ends.

[0037] For example, plates made of metal, preferably aluminum, can be used as closures. The plates can be glued, soldered, and / or welded to the ends of the base body.

[0038] Alternatively, the plates can be formed integrally with the remaining base body, preferably the square tube. The base body can be cut and / or bent accordingly at the ends.

[0039] The plates can be flat or curved, for example.

[0040] Preferably, the base body may have a seal on the back, e.g., a rubber sealing strip. This may, for example, be glued on.

[0041] According to a further embodiment, the base body has at least one fastening recess.

[0042] For example, the loudspeaker enclosure may have one or more enclosure recesses behind the loudspeaker frame. To install the loudspeaker frame, a tool, such as a pneumatic ratchet, can be inserted into an outer enclosure recess. This, in turn, may have a smaller, inner enclosure recess through which the loudspeaker frame can be attached, preferably screwed, to the loudspeaker enclosure using a fastener. The mounting recess may, for example, be designed as a hexagonal opening.

[0043] The inner housing recess can, for example, be arranged at an angle, e.g. 90°, to the outer housing recess.

[0044] The outer housing recess can, for example, be arranged at an angle, e.g. 90°, to the loudspeaker basket.

[0045] In this way, the fastening is not visible from the outside, which is advantageous from an optical point of view.

[0046] All required recesses, enclosure cutouts, and / or mounting recesses can be cut into the loudspeaker enclosure and / or base body, for example, using a tube laser cutting system. Milling or injection molding are also conceivable.

[0047] The invention relates to a system with a loudspeaker basket according to the invention and a surround, wherein the surround is attached directly to the loudspeaker basket at the attachment section.

[0048] According to one embodiment, the surround is glued to the loudspeaker basket and / or cast onto it, e.g. by injection molding.

[0049] Preferably, the surround is permanently attached to the speaker frame. This ensures a secure connection and prevents accidental detachment.

[0050] In addition, fastening materials such as screws can be saved, thus reducing costs.

[0051] Furthermore, the invention relates to a loudspeaker with at least one loudspeaker basket according to the invention and / or a system according to the invention.

[0052] The loudspeaker preferably has a drive. The drive, which is preferably arranged in the loudspeaker frame, comprises at least one magnet and at least one coil.

[0053] The magnet can, for example, have different magnetization or polarity in certain sections. Alternatively, at least two differently magnetized or polarized magnets can be provided.

[0054] The coil is preferably flat. For example, the coil can have a width between 1 mm and 10 mm, e.g., 4 mm.

[0055] The coil may preferably have at least one turn, wherein the turn may extend around a coil core.

[0056] An outer side of the winding opposite the coil core may, for example, have a mounting area for attachment to the loudspeaker. Preferably, the coil is attached to the loudspeaker exclusively via this mounting area.

[0057] The winding can thus be attached, e.g. glued, directly to the loudspeaker, e.g. the membrane and / or a centering device or a holder of the centering device.

[0058] A coil carrier is preferably not provided here.

[0059] The winding can, for example, be band-shaped and / or have a rectangular cross-sectional area.

[0060] For example, the winding comprises or consists of an aluminum material and / or a copper material.

[0061] Preferably, the winding further comprises an insulating layer, preferably an anodized layer and / or an adhesive lacquer layer.

[0062] The winding is preferably made of an anodized aluminum strip. The anodized layer can have a thickness between 1 µm and 10 µm, e.g., 4 µm. The anodized layer electrically insulates the overlapping windings from one another.

[0063] The coil core can, for example, comprise or consist of air and / or a plastic material, preferably reinforced with glass fiber.

[0064] With a coil core made of air, there's essentially no solid coil core at all. In this case, a strong fastener can be helpful, for example, to ensure the coil maintains the desired shape.

[0065] Preferably, the surround completely surrounds the loudspeaker drive.

[0066] Finally, the invention relates to a method for producing a system according to the invention, in which the bead is attached to the fastening section directly to the loudspeaker basket, preferably glued and / or cast, e.g. by injection molding.

[0067] The base body can be bent from a metal plate. Alternatively, the base body can be extruded from a plastic and / or metal material.

[0068] All required recesses, housing recesses and / or mounting recesses can be lasered, drilled, cut, ground, milled and / or blasted, for example.

[0069] The mounting section can preferably be sandblasted and / or plasma-treated before bonding. This improves the grip of the surround on the speaker frame.

[0070] All embodiments and components of the devices described here are preferably designed to be manufactured according to the method described here. Furthermore, all embodiments of the devices described here and all embodiments of the method described here can be combined with one another, preferably also independently of the specific embodiment in whose context they are mentioned.

[0071] The invention is described below by way of example with reference to the drawings. Fig. 1 a perspective view of an embodiment of a system according to the invention with a surround, a membrane and a loudspeaker basket, Fig. 2 a perspective view of a coil with a membrane attached to it, Fig. 3 a perspective view of an embodiment of a bead according to the invention, Fig. 4 a sectional view of the bead according to Fig. 3, and Fig. 5 another sectional view of the bead according to Fig. 3.

[0072] First, it should be noted that the illustrated embodiments are purely exemplary in nature. Individual features can be implemented not only in the combination shown, but also individually or in other technically feasible combinations. For example, the features of one embodiment can be combined in any way with features of another embodiment. Preferably, the number of recesses, mounting recesses, and / or beads in the loudspeaker frame is arbitrary.

[0073] If a figure contains a reference symbol that is not explained in the immediately corresponding description text, reference is made to the corresponding preceding or following explanations in the figure description. Thus, the same reference symbols are used for identical or comparable components in the figures and these are not explained again.

[0074] Fig. 1 shows a surround 10 for a loudspeaker, preferably a planar loudspeaker, having a fastening area 14 extending in a fastening surface 12 shown in dashed lines.

[0075] The fastening area 14 corresponds to an outer edge of the bead 10.

[0076] An elongated vibration region 16 is arranged within the fastening region 14.

[0077] The bead 10 has a central recess 36 in which a membrane 18 is arranged.

[0078] The surround 10 is attached to a loudspeaker basket 20. The loudspeaker basket 20 has an angled base body 22 and two, preferably identical, recesses 24 for loudspeaker drives. For better visibility, no loudspeaker drive is shown in the right-hand recess 24.

[0079] The loudspeaker basket 20 has a fastening section 26 for the direct fastening of a surround 10.

[0080] The fastening section 26 corresponds to an edge of the recess 24.

[0081] The surround 10 is attached, for example glued, directly to the attachment section 26 of the loudspeaker basket 20 via the attachment area 14.

[0082] To attach the loudspeaker basket 20 to a loudspeaker enclosure, the loudspeaker basket 20 may have mounting recesses 28. The mounting recesses 28 may, for example, be formed as hexagonal openings.

[0083] As in Fig. As can be seen in Figure 2, a coil 30 with a coil core 32 and a plurality of windings 34 (the individual windings are not shown for illustrative purposes) can be attached, for example, glued, directly to the membrane 18. Furthermore, the coil 30 can be attached, for example, glued, to a holder 35 of a centering device.

[0084] In the Fig. 3 to Fig. 5 it is shown that the bead 10 has a central recess 36.

[0085] Furthermore, the bead 10 has a fastening device 38 for the membrane 18.

[0086] The fastening device 38 corresponds to an inner edge of the bead 10, which extends around the central recess 36.

[0087] The membrane 18 can be directly attached, e.g. glued, to the fastening device 38.

[0088] The contour of the vibration region 16 is designed such that the vibration region 16 extends in sections on different sides of the fastening surface 12.

[0089] The vibration range may have several peaks 40 and valleys 42.

[0090] The basic shape of the contour is preferably wave-shaped. The elevations 40 and valleys 42 can themselves be jagged and / or wavy. The contour is therefore preferably irregular.

[0091] In the area of ​​the short end faces, the contour of the bead 10 is wider than in the area of ​​the long sides of the bead 10.

[0092] As shown in the sectional views in Fig. 4 and Fig. As can be seen in Figure 5, the cross-section of the contour is V- or W-shaped, at least in sections. List of reference symbols 10 bead 12 Mounting surface 14 Mounting area 16 vibration range 18 Membran 20 speaker basket 22 basic bodies 24 recess 26 Fastening section 28 Mounting recess 30 coil 32 coil core 34 turns 35 bracket 36 central recess 38 Fastening device 40 Survey 42 Valley QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2018 124 261 A1

[0002]

Claims

[1] Loudspeaker basket (20) for a loudspeaker, preferably a planar loudspeaker, comprising an angled base body (22) and a fastening section (26) for the direct fastening of a bead (10). [2] Loudspeaker basket (20) according to claim 1, characterized by that the base body (22) comprises or consists of an extruded plastic material and / or metal material, preferably aluminum. [3] Loudspeaker basket (20) according to claim 1 or 2, characterized by that the base body (22) is designed as a square tube. [4] Loudspeaker basket (20) according to one of the preceding claims, characterized by that the base body (22) has at least one recess (24) for a loudspeaker drive. [5] Loudspeaker basket (20) according to one of the preceding claims, characterized by that the base body (22) is hermetically sealed at the front ends. [6] Loudspeaker basket (20) according to one of the preceding claims, characterized by that the base body (22) has at least one fastening recess (28). [7] System comprising a loudspeaker basket (20) according to one of the preceding claims and a bead (10), wherein the bead (10) is fastened to the fastening section (26) directly on the loudspeaker basket (20). [8] System according to claim 7, characterized by that the surround (10) is glued and / or cast onto the loudspeaker basket (20). [9] Loudspeaker with at least one loudspeaker basket (20) according to one of claims 1 to 6 and / or a system according to claim 7 or 8.

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