A loudspeaker

Abstract

The utility model provides a kind of loudspeaker, belong to acoustic technical field, including support, the support is equipped with magnetic circuit component, the both sides of magnetic circuit component are equipped with diaphragm component respectively;The utility model can realize the bidirectional sound of diaphragm due to the setting of double diaphragm component;Two The diaphragm component shares one magnetic circuit component, can effectively utilize magnetic field intensity, driving force evenly distributed, inhibit high frequency division vibration, realize large volume, high sound quality and light and thin;The diaphragm component can make the utility model to be below 1.5mm thickness;The utility model realizes the effect of increasing sensitivity and inhibiting division vibration by improving BL value under ultrathin structure;The planar coil can be embedded in light and thin ball top, like printed circuit board, evenly cover the ball top, so that driving force is evenly distributed on the surface of diaphragm, and the stress of diaphragm is more uniform, which can effectively inhibit the division vibration of high frequency.

Description

Technical Field

[0001] This utility model relates to a loudspeaker. Background Technology

[0002] While the technology for intelligent power amplifiers is relatively mature, it still falls short of expectations in the field of acoustics.

[0003] For example, in noisy environments, people need louder speakers to make the sound clearer; in quiet environments, people need high-quality sound with low distortion; and when making calls in the near-ear field, they need to prevent far-field sound leakage. Therefore, speakers that combine high loudness, low distortion, and far-field leakage prevention are becoming products in urgent demand in fields such as smartphones, laptops, and wearables.

[0004] Existing loudspeaker products generally use a single diaphragm to produce sound. This is achieved by the voice coil extending into the magnetic gap to generate Lorentz force, which drives the diaphragm to vibrate. The sound direction is unidirectional, and if the amplitude is too large, it will cause the BLX symmetry to deteriorate, resulting in increased distortion. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the above-mentioned traditional technology and provide a loudspeaker.

[0006] The purpose of this utility model is achieved through the following technical measures: a loudspeaker, characterized in that: it includes a bracket, on which a magnetic circuit assembly is provided, and on both sides of the magnetic circuit assembly are respectively provided a diaphragm assembly.

[0007] As an improvement, the magnetic circuit assembly includes a magnet support frame disposed on the bracket, the magnet support frame having a plurality of magnet placement slots arranged at equal intervals, each of the magnet placement slots containing a magnet.

[0008] As a further improvement, the distance between the two magnet placement slots is 0.1mm-2mm.

[0009] As a further improvement, the diaphragm assembly includes a diaphragm, the diaphragm having a dome on the side facing the magnetic circuit assembly, and the dome having a planar coil on the side facing the magnetic circuit assembly.

[0010] As a further improvement, the planar coil includes several groups of coils, each group of coils being equidistant and connected in series, and each of the two ends of the planar coil is provided with a lead wire.

[0011] As a further improvement, each set of coils is positioned above the gap between the two magnets.

[0012] As a further improvement, the coil is composed of several parallel, equidistant, and connected lines.

[0013] As a further improvement, the vertical distance between the coil and the magnet is 0.1mm-0.8mm.

[0014] As a further improvement, the diaphragm includes a fixing portion fixed to the dome, a folded ring portion extending around the fixing portion, and a connecting portion extending from the folded ring portion.

[0015] As a further improvement, an internal air pressure leakage hole is also provided on one side of the bracket.

[0016] Due to the adoption of the above technical solution, the advantages of this utility model compared with the prior art are: First: Due to the dual-diaphragm assembly, this new invention can achieve bidirectional sound generation from the diaphragm; Second: The way in which two diaphragm components share one magnetic circuit component can effectively utilize the magnetic field strength, distribute the driving force evenly, suppress high-frequency segmentation vibration, and achieve high volume, high sound quality and thinness. Third: The diaphragm assembly enables this invention to be made ultra-thin, with a thickness of less than 1.5 mm; Fourth: This novel design achieves the effect of increasing the BL value, enhancing sensitivity, and suppressing segmentation vibrations in an ultra-thin structure; Fifth: The planar coil can be embedded in a thin dome, like a printed circuit board, and evenly distributed across the dome, so that the driving force is evenly distributed on the diaphragm surface. It is placed directly above the middle of the two magnets to realize multiple magnetic field closed loops, effective space, increase BL value, increase driving force, and realize planar force on the diaphragm assembly. Compared with the traditional ring voice coil, the diaphragm is subjected to more uniform force, which can effectively suppress high-frequency split vibration.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the structure of this utility model; Appendix Figure 2 This is a partial structural schematic diagram of the present invention; Appendix Figure 3 This is a partial structural schematic diagram of the present invention; Appendix Figure 4 This is a cross-sectional view of the present invention; Appendix Figure 5 This is a partially enlarged schematic diagram of the structure of this utility model. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Example: As attached Figure 1 -Appendix Figure 5 As shown, a loudspeaker includes a support bracket 1 that provides support. The support bracket 1 is a plastic support bracket. A magnetic circuit assembly 2 is provided on the support bracket 1. A diaphragm assembly 3 is provided on both sides of the magnetic circuit assembly 2. An internal air pressure leakage hole 4 is also provided on one side of the support bracket 1.

[0024] The magnetic circuit assembly 2 includes a magnet support frame 21 mounted on the bracket 1. The magnet support frame 21 is made of stainless steel or aluminum alloy, etc. The bracket 1 and the magnet support frame 21 are integrated by an insert injection molding process. The magnet support frame 21 has several magnet placement slots 22 arranged at equal intervals, with a quantity of ≥3 slots. The required quantity is selected according to the actual product requirements. The distance between two magnet placement slots 22 is 0.1mm-2mm, and the required distance is selected according to the actual product requirements. Each magnet placement slot 22 is equipped with a magnet 23. The magnet 23 is fixed to the magnet placement slot 22 by adhesives such as anaerobic adhesive or thermosetting adhesive. The magnetization direction of each magnet 23 is arranged in the order of N, S, N, S, with the polarities of adjacent magnets 23 being opposite.

[0025] The diaphragm assembly 3 includes a diaphragm 31, which includes a fixing part 311 fixed to the dome. A folded ring part 312 extends around the fixing part 311, and a connecting part 313 extends from the folded ring part 312, connecting to the bracket 1. The diaphragm 31 is made of conventional materials such as PEEK, TPEE, TPU, and rubber. A dome 32 is located on the side of the diaphragm 31 facing the magnetic circuit assembly 2. A planar coil 33 is located on the side of the dome 32 facing the magnetic circuit assembly 2. Leads 34 are located at both ends of the planar coil 33, and these leads are located in the folded ring part 312. The planar coil 33 is embedded in the thin dome 32, like a printed circuit board, so that the driving force is evenly distributed on the surface of the diaphragm 31. The planar coil 33 includes several sets of coils 331. The coil 331 is composed of several parallel, equidistant, and connected lines 332. The width between two lines 332 is 0.05mm-2mm, and the required distance is selected according to the actual product requirements. The number of coils 331 is determined according to the number of gaps between two magnets 23. Each group of coils 331 is equidistant and connected in series, and each group of coils 331 is located above the gap between two magnets 23. The vertical distance from the coil 331 to the magnet 23 is 0.1mm-0.8mm, and the required distance is selected according to the actual product requirements. According to the Lorentz force law, it is ensured that after the coil 331 is energized, the direction of force on the coil 331 in each magnetic gap is consistent. The lead wire 34 is connected to the coil 331 through a connecting plate 35, and the connection can be fixed by spot welding, laser welding, conductive adhesive bonding, etc.

[0026] The diaphragm 31 can be adjusted by controlling the current direction of each of its coils 331. The current directions can be the same or different. The displacement of the two diaphragms 31 can be adjusted in the same or opposite directions to meet different electronic product application scenarios.

[0027] This novel design utilizes a dual-diaphragm assembly 3 with a shared magnetic circuit system to achieve improved BL value, increased sensitivity, and suppression of segmented vibrations in an ultra-thin structure. The diaphragm assembly 3 incorporates planar coils 33 evenly distributed across the entire diaphragm 31. These coils 331 are positioned between the two magnets 23, creating multiple closed magnetic field loops. This effectively utilizes magnetic field strength to enhance the BL value and improve sensitivity. Since adjacent magnets 23 have opposite polarities, the current directions of adjacent lines on the diaphragm 31 are opposite. Based on the Lorentz force, the lines experience forces in the same direction, resulting in uniform force distribution across the entire plane during vibration, effectively reducing segmented vibrations. Furthermore, the dual-diaphragm assembly 3 design enables privacy calls and high-volume functionality.

[0028] In summary, this new invention can achieve bidirectional sound generation of the diaphragm 31. At the same time, the dual diaphragms 31 adopt the planar coils 33 evenly embedded in the thin diaphragm assembly 3 plane, like a printed circuit board, and share the magnet 23 unit. This can effectively utilize the magnetic field strength, uniformly distribute the driving force, suppress high-frequency split vibration, and achieve high volume, high sound quality and thinness. This new invention can be made ultra-thin to less than 1.5mm in thickness.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A loudspeaker, characterized in that: The device includes a support frame, on which a magnetic circuit assembly is mounted. Diaphragm assemblies are mounted on both sides of the magnetic circuit assembly. Each diaphragm assembly is a dual-diaphragm design. The magnetic circuit assembly includes a magnet support frame mounted on the support frame. The magnet support frame has several equally spaced magnet placement slots, each containing a magnet. The distance between two magnet placement slots is 0.1mm-2mm. The diaphragm assembly includes a diaphragm. A dome is located on the side of the diaphragm facing the magnetic circuit assembly. A planar coil is located on the side of the dome facing the magnetic circuit assembly. The planar coil is embedded in the dome. The planar coil includes several groups of coils, each group of coils being equally spaced. Each group of coils is located above the gap between two magnets, and the vertical distance from the coil to the magnet is 0.1mm-0.8mm.

2. A loudspeaker according to claim 1, characterized in that: Each group of coils is connected in series, and each end of the planar coil is provided with a lead wire.

3. A loudspeaker according to claim 2, characterized in that: The coil consists of several parallel and connected lines.

4. A loudspeaker according to claim 3, characterized in that: The diaphragm includes a fixing part fixed to the dome, a folded ring extending around the fixing part, and a connecting part extending from the folded ring.

5. A loudspeaker according to claim 1, characterized in that: The bracket is also provided with an internal air pressure leakage hole on one side.

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