A multi-cone loudspeaker

Abstract

The invention discloses a multi-cone loudspeaker, which improves the clarity of the original sound reproduction of the loudspeaker and has high sensitivity. The multi-cone loudspeaker comprises a basin frame and a basin assembly arranged on the basin frame, the basin assembly comprises a central basin and a plurality of outer basins, the plurality of outer basins are arranged in sequence along the circumference of the central basin, the loudspeaker also comprises a central driving mechanism and a plurality of outer driving mechanisms arranged around the periphery of the central driving mechanism, the central basin is driven by the central driving mechanism to vibrate and produce sound, each outer basin is driven by an outer driving mechanism to vibrate and produce sound, the central driving mechanism comprises a central voice coil connected to the central basin and a central magnetic circuit system for driving the central voice coil, each outer driving mechanism comprises an outer voice coil connected to the corresponding outer basin, an outer positioning support sheet respectively sleeved on the corresponding outer voice coil, and an outer magnetic circuit system for driving the outer voice coil.

Description

Technical Field

[0001] The invention belongs to the field of loudspeakers, and relates to a loudspeaker with multiple sound cones, in particular to a loudspeaker with multiple sound cones without positioning supports and capable of inputting multiple-channel audio input signals. Background Art

[0002] The cone used in the conventional loudspeaker without fixed support is generally disc-shaped, and the cone is connected to a voice coil to form a loudspeaker vibration system without fixed support. Such loudspeaker without fixed support can only be applied to single-channel signal input, which has limitations on the original sound reproduction, and the combination of a single voice coil and a cone has high requirements on the rigidity of the cone material. Although, the voice coil of such loudspeaker can also adopt a voice coil capable of multi-channel signal input, which is formed by stacking multiple sets of coils from the inside to the outside, and the disc-shaped cone and the fixed support are respectively glued to the outer wall of the voice coil to form a loudspeaker vibration system, and such loudspeaker can be applied to multi-channel signal input. However, since such loudspeaker has multiple sets of coils wound around one voice coil, the weight of the voice coil is increased when multiple sets of coils are wound around one voice coil. When the voice coil drives the cone, the sensitivity of the loudspeaker is affected and may be reduced. Summary of the invention

[0003] In view of the above problems, the present invention provides a multi-cone loudspeaker, which improves the clarity of the original sound reproduction of the loudspeaker and has higher sensitivity.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A multi-cone loudspeaker comprises a basin frame and a basin assembly arranged on the basin frame, the basin assembly comprising a central basin and a plurality of outer basins, the plurality of outer basins being arranged in sequence along the circumference of the central basin, the loudspeaker further comprising a central driving mechanism and a plurality of outer driving mechanisms arranged around the periphery of the central driving mechanism, the central basin being driven by the central driving mechanism to vibrate and produce sound, and each of the outer basins being driven by one of the outer driving mechanisms to vibrate and produce sound, the central driving mechanism comprising a central voice coil connected to the central basin and a central magnetic circuit system for driving the central voice coil, and each of the outer driving mechanisms comprising an outer voice coil connected to the corresponding outer basin, an outer positioning support piece respectively mounted on the corresponding outer voice coil, and an outer magnetic circuit system for driving the outer voice coil.

[0006] Preferably, the plurality of outer sound basins are spliced ​​together to form a ring surrounding the central sound basin, and the central sound basin and the plurality of outer sound basins are independently arranged on the basin frame. More preferably, the shape of each outer sound basin is generally a fan ring. Furthermore, the area of ​​each outer sound basin is generally equal.

[0007] More preferably, the basin frame includes a circle of basin frame sides, a circle of inner flanges located inside the basin frame sides, and a plurality of radial flanges connected between the basin frame sides and the inner flanges, the basin frame sides surround the periphery of the inner flange, the outer peripheral edge of the central sound basin is fixedly connected to the inner flange, each of the outer sound basins is roughly fan-shaped, the outer edge of each of the outer sound basins is fixedly connected to the basin frame sides, the inner edge of each of the outer sound basins is fixedly connected to the inner flange, and the two side edges of each of the outer sound basins are fixedly connected to two adjacent radial flanges.

[0008] More preferably, the basin frame also includes a plurality of external positioning flanges corresponding to the plurality of external positioning support plates, and there is one external positioning flange between any two adjacent radial flanges, and each of the external positioning flanges is fixedly connected to at least one of the side edges of the basin frame, the inner flange and the radial flanges through connecting ribs, the central magnetic circuit system is fixedly arranged on the inner flange, and each of the external magnetic circuit systems is respectively fixedly arranged on the corresponding external positioning flanges.

[0009] More preferably, the inner flange is formed with a central through hole, and each of the outer positioning flanges is formed with a peripheral through hole, the lower end of the central voice coil passes through the central through hole and is inserted into the magnetic gap of the central magnetic circuit system, and the lower end of each of the outer voice coils passes through the corresponding peripheral through hole and is inserted into the magnetic gap of the outer magnetic circuit system.

[0010] Furthermore, the central magnetic circuit system and each of the external magnetic circuit systems respectively include a U-iron with an inner cavity, a magnetic steel and a magnetic pole core arranged in the U-iron, the upper end of the U-iron is fixedly connected to the inner flange or the outer positioning flange, and a magnetic gap is formed between the magnetic steel and the magnetic pole core and the inner wall of the U-iron for the central voice coil or the outer voice coil to be inserted.

[0011] Furthermore, each of the external positioning support pieces is respectively embedded in the corresponding external positioning flange.

[0012] Furthermore, the central driving mechanism also includes a central positioning support piece sleeved on the central voice coil, and the central positioning support piece is embedded in the inner flange.

[0013] More preferably, the center voice coil and each of the outer voice coils have a pair of leads respectively, the end of each of the leads is connected to an input terminal that can be electrically connected to the power amplifier, and a female connector corresponding to the input terminal is provided on the outer surface of the basin side panel, and the input terminal is arranged in the female connector.

[0014] Preferably, the central portion of the central sound basin has an upwardly arched dome or a flat plate-shaped main body, and the outer sound basin has a flat plate-shaped main body. When the central sound basin and the outer sound basin respectively adopt a flat plate-shaped main body, the height of the central sound basin and the outer sound basin can be lower than the height of the traditional disc-shaped sound basin, and the directivity width of the product is better than that of the traditional disc-shaped sound basin speaker.

[0015] Preferably, a fixing step for connecting to the central voice coil is formed on the lower surface of the central sound cone; and / or a plurality of fixing steps for connecting to the outer voice coil are formed on the lower surface of the outer sound cone.

[0016] Preferably, a plurality of the outer driving mechanisms are arranged at equal intervals around the periphery of the central driving mechanism.

[0017] Preferably, the outer sound basin is provided with a plurality of outer dust covers for respectively covering the outer voice coils.

[0018] Herein, "multi-cone" means that the total number of cones is equal to or greater than three, preferably at least four.

[0019] The present invention adopts the above solution, which has the following advantages compared with the prior art:

[0020] The speaker of the present invention has an ingenious and reasonable product structure. The central voice coil is vibrated up and down in the central magnetic circuit system by inputting audio signals, and the central sound basin is driven to sound by inputting multiple groups of outer voice coils by multi-channel audio signals. The outer voice coils vibrate up and down in the external magnetic circuit system to drive the outer sound basin to sound. The central sound basin emits mid-high tones. The outer sound basin increases and expands the bass performance of the speaker, broadens the bandwidth and directivity of the speaker, and reduces the distortion of the speaker. The sensitivity of the speaker is increased by combining the central voice coil with multi-stage outer voice coils, and driving each sound basin respectively by the central magnetic circuit system and the external magnetic circuit system. The original sound reproduction effect of the speaker can be improved by inputting multiple audio signals to the central voice coil and the outer ring voice coil respectively, and driving the central sound basin and the outer ring sound basin. In addition, the outer voice coils are independent of each other and do not interfere with each other. The audio signals input to each outer voice coil can be different, so that the speaker is suitable for use as a digital speaker and can be used to build a digital speaker system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 is an exploded schematic diagram of a speaker according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the basin frame and voice coil in;

[0024] Figure 3 for Figure 1 A front view of a basin frame with a voice coil installed in FIG.

[0025] Figure 4 for Figure 1 Schematic diagram of the back of the basin frame with the voice coil installed.

[0026] in:

[0027] 1. Basin frame; 11. Connecting ribs; 12. Basin frame side; 121. Female connection port; 13. Inner flange; 131. Center through hole; 14. Radial flange; 15. External positioning flange; 151. Peripheral through hole;

[0028] 2. Sound basin assembly; 21. Center sound basin; 211. Folding ring; 22. External sound basin; 221. Folding ring; 222. Dust cover;

[0029] 31. Center voice coil; 32. Outer voice coil; 33. Lead wire; 34. Input terminal;

[0030] 4a, central magnetic circuit system; 4b, external magnetic circuit system; 41, U iron; 42, pad iron; 43, magnetic steel; 44, magnetic pole core;

[0031] 51. Center positioning support; 52. External positioning support. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0033] In the description of the present application, it should be understood that the terms "center", "up", "down", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] This embodiment provides a speaker with multiple sound cones. In this article, "multiple sound cones" means that the total number of sound cones is equal to or greater than three, preferably at least four. Figures 1 to 4As shown, the multi-cone speaker includes a basin frame 1 and a basin assembly 2 arranged on the basin frame 1. The basin assembly 2 includes a central basin 21 and multiple outer basins 22, and the multiple outer basins 22 are arranged in sequence along the axial direction of the central basin 21. The mid-range basin 21 and the multiple outer basins 22 are independently arranged on the basin frame 1 without interfering with each other. The speaker also includes a central driving mechanism for driving the central basin 21 to vibrate and produce sound, and multiple outer driving mechanisms for driving the outer basins 22 to vibrate. The outer driving mechanisms are arranged on the periphery of the central driving mechanism, and each outer driving mechanism corresponds to an outer basin 22, and each outer basin 22 is driven to vibrate and produce sound by the corresponding outer driving mechanism. Further, multiple outer driving mechanisms are arranged around the periphery of the central driving mechanism at equal intervals. The central driving mechanism includes a central voice coil 31 connected to the central basin 21 and a central magnetic circuit system 4a for driving the central voice coil 31, and each outer driving mechanism includes an outer voice coil 32 connected to the corresponding outer basin 22 and an outer magnetic circuit system 4b for driving the outer voice coil 32. Preferably, the number of the outer voice coils 32 is three or more, which are arranged at equal intervals along a circle, and the center of the circle falls on the midpoint of the central voice coil 31. The central voice coil 31 drives the central cone 21 to vibrate and produce sound, and the central cone 21 is responsible for producing sound at medium and high frequencies. Each outer voice coil 32 drives the corresponding outer cone 22 to vibrate and produce sound, and the outer cone 22 is responsible for producing sound at medium and low frequencies. Multiple outer voice coils 32 can input multiple different analog or digital audio signals, thereby improving the original sound reproduction performance of the speaker.

[0035] When viewed from above, the central sound cone 21 has a substantially circular outer contour. The plurality of outer sound cones 22 are spliced ​​together to form a ring surrounding the central sound cone 21. Preferably, the overall shape of each outer sound cone 22 is substantially a fan ring, and the areas of each outer sound cone 22 are substantially equal. Figure 1 In the embodiment shown, three outer sound cones 22 are arranged in sequence and spaced apart on the periphery of the central sound cone 21. The central sound cone 21 is arranged in the middle of the basin frame 1, and the plurality of outer sound cones 22 are independently arranged on the basin frame 1. In one embodiment, the central sound cone 21 and the outer sound cones 22 respectively have a flat plate-shaped main body, and reinforcing ribs are provided on the back of the main bodies of the two to improve the working strength and rigidity, which is used to enhance the strength of the voice coil when pushing the sound cone. The height of the central sound cone 21 and the outer sound cone 22 is lower than that of the traditional disc-shaped sound cone. At the same time, when the central sound cone 21 and the outer sound cone 22 are in the shape of a flat plate, the directivity width of the product is better than that of the traditional disc-shaped sound cone speaker. In another embodiment, the middle part of the central sound cone 21 has an upwardly arched dome to increase the extension of the treble frequency.

[0036] The basin frame 1 includes a circle of basin frame side edges 12, a circle of inner flanges 13 located inside the basin frame side edges 12, and a plurality of radial flanges 14 connected between the basin frame side edges 12 and the inner flanges 13. The inner flange 13 as a whole is roughly annular and matches the outer contour of the central sound basin 21. The basin frame side edges 12 surround the periphery of the inner flange 13 and are also roughly annular, and the two are roughly concentric rings. The radial flanges 14 extend along the radial direction of the basin frame 1 and are located between the inner flange 13 and the basin frame side edges 12. The outer periphery of the central sound basin 21 is fixedly connected to the inner flange 13 through a folding ring 211. The inner peripheries of each outer sound basin 22 are fixedly connected to the inner flange 13 through a folding ring 221, and the inner peripheries of the outer sound basins 22 and the outer peripheries of the central sound basin 21 do not intersect, and the two do not connect to each other. The outer peripheries of each outer sound basin 22 are connected to the basin frame side edges 12 through folding rings 221. The two sides of each outer sound basin 22 are fixedly connected to two adjacent radial flanges 14 through the folding ring 221, and the sides of two adjacent outer sound basins 22 are not connected to each other, and the two are separated by the ridges on the radial flanges 14. The central magnetic circuit system 4a and the outer magnetic circuit system 4b are fixedly arranged on the bottom of the basin frame, and the central voice coil 31 and the outer voice coil 32 are located between the sound basin assembly 2 and the bottom of the basin frame.

[0037] The basin frame 1 also includes a plurality of external positioning flanges 15, and each of the two adjacent radial flanges 14 has an external positioning flange 15. Each external positioning flange 15 is fixedly connected to at least one of the basin frame side 12, the inner flange 13 and the radial flange 14 through a connecting rib 11. Figure 3 As shown, the outer positioning flange 15 is fixedly connected to the side edge 12 of the basin frame and the inner flange 13 respectively through three connecting ribs 11. The central magnetic circuit system 4a is fixedly arranged on the inner flange 13, and each outer magnetic circuit system 4b is fixedly arranged on the corresponding outer positioning flange 15. Specifically, a central through hole 131 is formed on the inner flange 13, and a peripheral through hole 151 is formed on each outer positioning flange 15. The lower end of the central voice coil 31 passes through the central through hole 131 and is inserted into the magnetic gap of the central magnetic circuit system 4a, and the lower end of each outer voice coil 32 passes through the corresponding peripheral through hole 151 and is inserted into the magnetic gap of the outer magnetic circuit system 4b.

[0038] A central positioning support piece 51 is tightly fitted on the central voice coil 31, and the central positioning support piece 51 is embedded in the inner flange 13. The inner surface of the central positioning support piece 51 is glued on the central voice coil 31, and the outer surface is tightly fitted with the inner wall of the inner flange 13, so as to prevent the central voice coil 31 and the central sound basin 21 from swinging except in the vibration direction when vibrating. An outer positioning support piece 52 is tightly fitted on each outer voice coil 32, and the outer positioning support piece 52 is embedded in the corresponding outer positioning flange 15. The inner surface of the outer positioning support piece 52 is glued on the outer voice coil 32, and the outer surface is tightly fitted with the inner wall of the outer positioning flange 15, so as to prevent the outer voice coil 32 and the outer sound basin 22 from swinging except in the vibration direction when vibrating. Each outer sound basin 22 is respectively provided with an outer dust cover 222 for covering the outer voice coil 32. When the above-mentioned central sound basin 21 is a sound basin with a dome, the central positioning support piece 51 may not be configured.

[0039] The central magnetic circuit system 4a and each outer magnetic circuit system 4b respectively include a U iron 41 with an inner cavity, and a washer 42, a magnetic steel 43 and a magnetic pole core 44 arranged in the U iron 41. The washer 42 is a neodymium magnetic washer, and the magnetic steel 43 is a neodymium magnetic steel. The upper end of the U iron 41 is fixedly connected to the bottom of the basin frame, and a magnetic gap is formed between the outer surfaces of the washer 42, the magnetic steel 43 and the magnetic pole core 44 and the inner wall of the U iron 41 for the central voice coil 31 or the outer voice coil 32 to be inserted. The above-mentioned center through hole 131 is opened at the center of the bottom of the basin frame, and the upper end of the U iron 41 of the center magnetic circuit system 4a is fixedly set in the center through hole 131. The U iron 41 is installed with a washer 42, a magnet 43 and a pole core 44 arranged in sequence from bottom to top. The lower surface of the pole core 44 is tightly fitted with the upper surface of the neodymium magnet 43, the lower surface of the neodymium magnet 43 is tightly fitted with the upper surface of the washer 42, the lower surface of the washer 42 is tightly fitted with the upper surface of the bottom of the U iron 41, and there is a gap between the outer surfaces of the washer 42, the magnet 43 and the pole core 44 and the inner wall of the U iron 41, thereby forming a magnetic gap for the center voice coil 31 to be inserted. The above-mentioned multiple peripheral through holes 151 are evenly distributed around the central through hole 131, and the upper ends of the U irons 41 of each external magnetic circuit system 4b are fixedly arranged in the corresponding peripheral through holes 151, respectively. The U iron 41 is installed with a washer 42, a magnetic steel 43 and a pole core 44 arranged in sequence from bottom to top. The lower surface of the pole core 44 is tightly fitted with the upper surface of the neodymium magnetic steel 43, the lower surface of the neodymium magnetic steel 43 is tightly fitted with the upper surface of the washer 42, the lower surface of the washer 42 is tightly fitted with the upper surface of the bottom of the U iron 41, and there is a gap between the outer surfaces of the washer 42, the magnetic steel 43 and the pole core 44 and the inner side wall of the U iron 41, thereby forming a magnetic gap for the outer voice coil 32 to be inserted. Preferably, the basin frame 1 is formed by plastic injection molding, and the U iron 41 is embedded in the basin frame 1 during the injection molding process, thereby improving the assembly accuracy. In this embodiment, the above-mentioned magnetic steel magnetic circuit system is also called the inner magnetic system. In addition, a ferrite structure magnetic circuit system (i.e., an external magnetic system including T-iron) or a magnetic circuit system of a magnetic steel and ferrite hybrid may also be used.

[0040] A plurality of female connectors 121 are provided on the outer surface of the side edge 12 of the basin frame, and a plurality of input terminals 34 are integrated in each female connector 121, and external components (such as power amplifiers) can be electrically connected through the female connectors 121. The central voice coil 31 and each outer voice coil 32 each have a pair of leads 33, and the ends of each lead 33 are connected to one of the above-mentioned input terminals 34, and the input terminals 34 are embedded in the side edge 12 of the basin frame. Specifically, each voice coil is provided with a group of positive and negative leads 33, and each group of leads 33 is connected to two input terminals 34 provided on the side edge 12 of the basin frame. When the speaker needs to be connected to the power amplifier, the male connector connected to the power amplifier can be inserted into the female connector 121, and the input terminal 34 therein is connected to realize the transmission of the audio signal. Multiple analog audio signals or multiple digital audio signals can be input to the central voice coil 31 and each outer voice coil 32 through multiple input terminals 34, thereby improving the original sound reproduction performance of the speaker.

[0041] A fixed step for connecting the central voice coil 31 is formed on the lower surface of the central sound cone 21, and the upper end of the central voice coil 31 is tightly fitted with the fixed step. A fixed step for connecting the outer voice coil 32 is formed on the lower surface of each outer sound cone 22, and the upper end of the outer voice coil 32 is tightly fitted with the corresponding fixed step.

[0042] The material of the basin frame 1 is plastic or metal. The central sound basin 21 and the outer sound basin 22 are made of different materials, such as plastic (PP), paper, cloth (silk), metal or alloy (aluminum alloy), and can be a film material. The folding ring 221 is made of the same material as the outer sound basin 22, or a combination of one or more of sponge, rubber, and cloth. It has the advantages of light weight, good damping elasticity and rigidity, high temperature and low temperature resistance, waterproof and mildew resistance.

[0043] The loudspeaker of this embodiment has the following characteristics: a central sound cone 21 is provided at the center of the basin frame 1, a fixed voice coil step is provided at the lower end of the central sound cone 21, and a central voice coil 31 is fixed on the fixed step of the central sound cone 21 to form a vibration system for mid-high frequency sound production; three outer sound cones 22 with a planar main body are evenly arranged on the periphery of the central sound cone 21, and folded rings are respectively provided on the inner edge and the outer end of the outer sound cone 22, and a step for fixing the voice coil is provided at the bottom of the outer sound cone 22, and the three outer voice coils 32 are fixed on the steps of the corresponding outer sound cone 22 to form a vibration system for mid-low frequency sound production, thereby forming a multi-cone, multi-magnetic circuit, non-positioning support loudspeaker. This type of speaker adopts a multi-cone, multi-magnetic circuit, and multi-voice coil driving structure. Compared with the traditional non-positioning support speaker, it adopts a multi-cone, that is, the center cone 21 is responsible for the sound of the middle and high frequencies, and the multiple outer cones 22 are responsible for the sound of the middle and low frequencies. The combination of multiple cones is conducive to improving the clarity of the speaker's original sound reproduction, and the speaker's bass and directivity width are also better than the traditional cone speaker; by using a single-channel signal input to drive the center voice coil 31 to move up and down in the U iron 41 magnetic circuit, and by using multiple audio signal inputs to drive the multiple outer ring voice coils to move up and down in multiple U iron 41 magnetic circuits, the center cone 21 and the flat outer cone 22 are driven to sound, which can also increase the speaker sensitivity and reduce the speaker distortion. The speaker can also use multiple audio signal inputs to drive the speaker to sound, and by inputting multiple digital audio signals to the speaker, the original sound reproduction quality, directivity, frequency width, etc. will be better than traditional speakers. By adopting a multi-voice coil and flat cone structure, the height of the speaker is greatly reduced compared to the height of traditional speakers. It can also change the impact of the superposition of bass and treble on the performance of traditional coaxial speakers.

[0044] The product structure of the speaker is ingenious and reasonable. The audio signal is input to the central voice coil 31 to vibrate up and down in the central magnetic circuit to drive the central sound cone 21 (flat or spherical) to make sound; multi-channel audio signals are input to multiple groups of outer voice coils 32 respectively, and the outer voice coils 32 vibrate up and down in the magnetic circuit to drive multiple outer sound cones 22 to make sound. The center cone 21 is flat or has a dome in the middle to produce medium and high-frequency sounds. The flat outer cone 22 increases and expands the bass performance of the speaker, widens the bandwidth and directivity of the speaker, and reduces the distortion of the speaker. The center voice coil 31 and the multi-stage outer voice coil 32 are combined, and the multiple cones are driven respectively by the center magnetic circuit system 4a and the outer magnetic circuit system 4b, so that the sensitivity of the speaker is increased. The center cone 21 in the multiple cones adopts a flat or spherical structure, and the outer cone adopts a flat plate shape and an inner and outer circle folded ring structure, which reduces the height of the cone and thus reduces the height of the product. Multi-channel audio signals are respectively input into the center voice coil 31 and the outer coil to drive the center cone 21 and the outer cone, so as to improve the original sound reproduction effect of the speaker.

[0045] The above embodiment is only for illustrating the technical concept and features of the present invention, and is a preferred embodiment. Its purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-cone speaker, comprising a basin frame and a cone assembly arranged on the basin frame, characterized in that: The sound cone assembly includes a central sound cone and multiple outer sound cones, and the multiple outer sound cones are arranged along the circumference of the central sound cone. The speaker also includes a central driving mechanism and multiple outer driving mechanisms arranged around the periphery of the central driving mechanism. The central sound cone is driven by the central driving mechanism to vibrate and produce sound, and each of the outer sound cones is driven by one of the outer driving mechanisms to vibrate and produce sound. The central driving mechanism includes a central voice coil connected to the central sound cone and a central magnetic circuit system for driving the central voice coil. Each of the outer driving mechanisms includes an outer voice coil connected to the corresponding outer sound cone, an outer positioning support piece respectively mounted on the corresponding outer voice coil, and an outer magnetic circuit system for driving the outer voice coil.

2. The loudspeaker according to claim 1, characterized in that: The multiple outer sound basins are spliced ​​together to form a ring surrounding the central sound basin, and the central sound basin and the multiple outer sound basins are independently arranged on the basin frame.

3. The loudspeaker according to claim 2, characterized in that: The basin frame includes a circle of basin frame sides, a circle of inner flanges located inside the basin frame sides, and multiple radial flanges connected between the basin frame sides and the inner flanges. The basin frame sides surround the outer periphery of the inner flange, the outer peripheral edge of the central sound basin is fixedly connected to the inner flange, each of the outer sound basins is fan-shaped, the outer edge of each of the outer sound basins is fixedly connected to the basin frame sides, the inner edge of each of the outer sound basins is fixedly connected to the inner flange, and the two side edges of each of the outer sound basins are fixedly connected to two adjacent radial flanges.

4. The loudspeaker according to claim 3, characterized in that: The basin frame also includes a plurality of external positioning flanges corresponding to the plurality of external positioning support plates, and there is one external positioning flange between any two adjacent radial flanges. Each of the external positioning flanges is fixedly connected to at least one of the side of the basin frame, the inner flange and the radial flanges through connecting ribs. The central magnetic circuit system is fixedly arranged on the inner flange, and each of the external magnetic circuit systems is fixedly arranged on the corresponding external positioning flange.

5. The loudspeaker according to claim 4, characterized in that: The inner flange is formed with a central through hole, and each of the outer positioning flanges is formed with a peripheral through hole. The lower end of the central voice coil passes through the central through hole and is inserted into the magnetic gap of the central magnetic circuit system, and the lower end of each of the outer voice coils passes through the corresponding peripheral through hole and is inserted into the magnetic gap of the outer magnetic circuit system.

6. The loudspeaker according to claim 5, characterized in that: The central magnetic circuit system and each of the external magnetic circuit systems respectively include a U-iron with an inner cavity, a magnetic steel and a magnetic pole core arranged in the U-iron, the upper end of the U-iron is fixedly connected to the inner flange or the outer positioning flange, and a magnetic gap is formed between the magnetic steel and the magnetic pole core and the inner wall of the U-iron for the central voice coil or the outer voice coil to be inserted.

7. The loudspeaker according to claim 4, characterized in that: Each of the outer positioning support pieces is respectively embedded in the corresponding outer positioning flange; and / or, the central driving mechanism further includes a central positioning support piece sleeved on the central voice coil, and the central positioning support piece is embedded in the inner flange.

8. The loudspeaker according to claim 3, characterized in that: The central voice coil and each of the outer voice coils have a pair of leads respectively, and the end of each lead is connected to an input terminal that can be electrically connected to the power amplifier. A female connector corresponding to the input terminal is provided on the outer surface of the basin side panel, and the input terminal is arranged in the female connector.

9. The loudspeaker according to claim 1, characterized in that: The central sound cone has a dome that arches upward or a flat plate-shaped main body in the middle, and the outer sound cone has a flat plate-shaped main body.

10. The loudspeaker according to claim 1, characterized in that: A fixed step for connecting the central voice coil is formed on the lower surface of the central sound basin; and / or, a plurality of fixed steps for connecting the outer voice coil are formed on the lower surface of the outer sound basin; and / or, a plurality of outer dust covers for respectively covering the outer voice coils are provided on the outer sound basin.

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