Bidirectional loudspeaker group, sound box and audio equipment

Abstract

The invention belongs to the technical field of loudspeakers, and discloses a bidirectional loudspeaker group, a sound box and audio equipment, and the bidirectional loudspeaker group comprises a common magnetic circuit module, a first loudspeaker and a second loudspeaker. The common magnetic circuit module comprises a magnetic conduction bowl, a first magnetic gap and a second magnetic gap are formed in the inner side and the outer side of the magnetic conduction bowl in the first direction respectively, a first through hole communicated with the first magnetic gap and the second magnetic gap is formed in the magnetic conduction bowl, and the first loudspeaker and the second loudspeaker are arranged on the two sides of the common magnetic circuit module in the second direction respectively. The first loudspeaker comprises an annular first voice coil, the second loudspeaker comprises an annular second voice coil, the first voice coil and the first magnetic gap are correspondingly arranged, the first voice coil can vibrate in the first magnetic gap in the second direction, the second voice coil and the second magnetic gap are correspondingly arranged, and the second voice coil can vibrate in the second magnetic gap in the second direction. Through the above arrangement, the bidirectional loudspeaker group provided by the invention can achieve the balanced damping, sound quality improvement and heat dissipation requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of speakers, and in particular to a two-way speaker group, a speaker box, and an audio device. Background Art

[0002] When a speaker is working normally, it will generate mechanical vibrations. Such vibrations will not only interfere with its own sound quality output, but also be transmitted to other components through the installation structure, resulting in abnormal vibrations of the audio device, thereby affecting the sound quality performance.

[0003] Currently, most of the speakers in audio devices adopt a single-sided installation method. During the working process, the speaker will generate a reverse force, causing vibrations of other components inside the speaker box. This mechanical vibration phenomenon will not only reduce the sound quality, but may also have an adverse impact on the stability and service life of the device. Moreover, the existing audio modules pursue the compactness of their own structures. Although the compact structure design helps to reduce the volume of the device, it also limits the heat dissipation space, resulting in heat accumulation and affecting the performance and life of the speaker. On the other hand, in order to achieve a good shock absorption effect, the audio module usually needs to add additional structures or materials, which will further compress the installation space, limit the voice coil stroke of the speaker, and thus affect the low-frequency performance.

[0004] Therefore, there is an urgent need for a speaker group, a speaker box, and an audio device to balance the requirements of shock absorption, sound quality improvement, and heat dissipation. Summary of the Invention

[0005] The purpose of the present invention is to provide a two-way speaker group that can balance the requirements of shock absorption, sound quality improvement, and heat dissipation.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A two-way speaker group, comprising:

[0008] A common magnetic circuit module, including a magnetic guide bowl. The inner and outer sides of the magnetic guide bowl along a first direction are respectively provided with a first magnetic gap and a second magnetic gap, and a first through hole communicating the first magnetic gap and the second magnetic gap is opened on the magnetic guide bowl;

[0009] A first speaker and a second speaker are respectively arranged on two sides of the common magnetic circuit module along a second direction. The first speaker includes an annular first voice coil, and the second speaker includes an annular second voice coil. The first voice coil and the second voice coil are coaxially arranged, and the first voice coil is correspondingly arranged with the first magnetic gap. The first voice coil can vibrate in the first magnetic gap along the second direction. The second voice coil is correspondingly arranged with the second magnetic gap, and the second voice coil can vibrate in the second magnetic gap along the second direction.

[0010] Optionally, a non-magnetic part is provided on the magnetic guiding bowl.

[0011] Optionally, the magnetic guiding bowl includes a magnetic guiding plate, a connecting cylinder, and a clamping plate. The connecting cylinder is provided with a through hole. The magnetic guiding plate covers one end of the connecting cylinder. The clamping plate is arranged at the other end of the connecting cylinder. The clamping plate extends along the circumferential direction of the connecting cylinder towards the side away from the center of the connecting cylinder. The connecting cylinder is configured as the non-magnetic part.

[0012] Optionally, the magnetic guiding plate and / or the clamping plate are provided with the first through holes. There are a plurality of the first through holes, and the plurality of first through holes are arranged at intervals.

[0013] Optionally, the magnetic guiding bowl is configured as an integrally formed structure or a split structure.

[0014] Optionally, the first loudspeaker further includes a first chassis and a first diaphragm assembly. The first chassis is provided with a first through hole along the second direction. The outer peripheral edge of the first diaphragm assembly is connected to the first chassis and covers one end of the first through hole. One end of the first voice coil is connected to the first diaphragm assembly, and the other end is arranged corresponding to the first magnetic gap;

[0015] The second loudspeaker further includes a second chassis and a second diaphragm assembly. The second chassis is provided with a second through hole along the second direction. The outer peripheral edge of the second diaphragm assembly is connected to the second chassis and covers one end of the second through hole. One end of the second voice coil is connected to the second diaphragm assembly, and the other end is arranged corresponding to the second magnetic gap;

[0016] The first chassis is connected to the second chassis; or, the first chassis and the second chassis are an integrally formed structure.

[0017] Optionally, the first diaphragm assembly further includes a first vibrating plate and a first dust cap. The first vibrating plate is connected to the first chassis and is provided with a first mounting hole. One end of the first voice coil is placed in the first mounting hole. The first dust cap is connected to one end of the first voice coil and covers the first mounting hole;

[0018] The second diaphragm assembly further includes a second vibrating plate and a second dust cap. The second vibrating plate is connected to the second chassis and is provided with a second mounting hole. One end of the second voice coil is placed in the second mounting hole. The second dust cap is connected to one end of the second voice coil and covers the second mounting hole.

[0019] Optionally, the first speaker further includes a first spider, one end of the first spider is connected to the first diaphragm, and the other end is connected to the first chassis; the second speaker further includes a second spider, one end of the second spider is connected to the second diaphragm, and the other end is connected to the second chassis.

[0020] Optionally, the first speaker further includes a first support frame, the first support frame is disposed between the first voice coil and the first chassis, one end of the first support frame is connected to the first diaphragm, and the other end is connected to the first chassis through the first spider;

[0021] The second speaker further includes a second support frame, the second support frame is disposed between the second voice coil and the second chassis, one end of the second support frame is connected to the second diaphragm, and the other end is connected to the second chassis through the second spider.

[0022] Optionally, the bi-directional speaker group further includes a lead wire, the first spider and / or the second spider are / is provided with corrugated folds, the corrugated folds extend along the first direction and form a plurality of continuous peaks and valleys, and the lead wire is disposed along the contour of the corrugated folds and abuts against the surface of the corrugated folds.

[0023] Optionally, the first diaphragm assembly further includes a first upper surround and a first lower surround, the first lower surround abuts against the first chassis, and the first upper surround and the first lower surround are clamped on both sides of the first diaphragm;

[0024] The second diaphragm assembly further includes a second upper surround and a second lower surround, the second lower surround abuts against the second chassis, and the second upper surround and the second lower surround are clamped on both sides of the second diaphragm.

[0025] Optionally, the first lower surround and / or the second lower surround are / is provided with a plurality of hollow portions at intervals along its / their circumferences.

[0026] Optionally, the common magnetic circuit module further includes a first magnet and a second magnet, the first magnet is disposed inside the magnetic bowl and forms the first magnetic gap with the inner wall of the magnetic bowl, the first voice coil is disposed outside the first magnet, the second magnet is disposed outside the magnetic bowl and forms the second magnetic gap with the outer wall of the magnetic bowl, and the second magnet is disposed outside the second voice coil.

[0027] Optionally, the common magnetic circuit module further includes a first magnetic conductive sheet and a second magnetic conductive sheet, the first magnetic conductive sheet is disposed on the first magnet, and the second magnetic conductive sheet is disposed on the second magnet.

[0028] Optionally, the magnetic bowl, the first magnet, and the first magnetic sheet are provided with an air flow channel therethrough, and the first speaker and the second speaker are communicated with each other through the air flow channel.

[0029] Optionally, the first magnet and / or the second magnet each include a plurality of magnet blocks arranged at intervals, a magnetic gap is formed between the magnet blocks, and the plurality of magnet blocks enclose to form an annular structure.

[0030] Optionally, along the second direction, the first chassis and / or the second chassis are provided with a plurality of interconnected stepped portions, and the stepped portions are provided with third through holes for communicating with the outside.

[0031] Optionally, the first voice coil and / or the second voice coil are provided with a plurality of second through holes spaced apart along the circumferential direction thereof.

[0032] Another object of the present invention is to provide a speaker that can balance shock absorption, sound quality improvement, and heat dissipation requirements.

[0033] To achieve this purpose, the present invention adopts the following technical solutions:

[0034] A speaker includes a box body and the bidirectional speaker group as described above, and the bidirectional speaker group is assembled in the box body.

[0035] Another object of the present invention is to provide an audio device that can balance shock absorption, sound quality improvement, and heat dissipation requirements.

[0036] To achieve this purpose, the present invention adopts the following technical solutions:

[0037] An audio device includes the bidirectional speaker group as described above.

[0038] The beneficial effects of the present invention:

[0039] The present invention provides a two-way speaker group, a speaker box, and an audio device. The two-way speaker group includes a common-magnet magnetic circuit module, a first speaker, and a second speaker. The common-magnet magnetic circuit module includes a magnetic guiding bowl. On the inner and outer sides of the magnetic guiding bowl along a first direction, a first magnetic gap and a second magnetic gap are respectively provided. The first speaker and the second speaker are respectively disposed on two sides of the common-magnet magnetic circuit module along a second direction. The first speaker includes an annular first voice coil, and the second speaker includes an annular second voice coil. By vibrating the first voice coil along the second direction in the corresponding first magnetic gap and vibrating the second voice coil along the second direction in the corresponding second magnetic gap, the reverse forces generated when the first speaker and the second speaker work can be offset from each other, thereby reducing the phenomenon of mechanical vibration and avoiding the problems of sound quality interference and stability caused by the vibration of other components inside the audio device. Moreover, the above layout structure does not require additional shock-absorbing structures or materials, which is beneficial to improving the compactness of the overall structure. Without increasing additional installation space, by providing a first through hole on the magnetic guiding bowl that communicates the first magnetic gap and the second magnetic gap, the heat dissipation effect of the overall structure is improved. Since the first voice coil and the second voice coil are coaxially arranged and vibrate in corresponding independent magnetic gaps respectively, it not only ensures the vibration space of the first speaker and the second speaker, avoids the limitation of the voice coil stroke, but also can fully exert the low-frequency performance of the speaker and improve the sound quality performance. The speaker box includes a box body and the two-way speaker group, and the two-way speaker group is assembled in the box body. The audio device includes the two-way speaker group. Through the above settings, the two-way speaker group of the present application can balance the requirements of shock absorption, sound quality improvement, and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 FIG. 6 is a first schematic diagram of the speaker group provided by an embodiment of the present invention;

[0041] Figure 2 FIG. Figure 1 is a partial enlarged view of part A in FIG. 6;

[0042] Figure 3 FIG. 16 is a first exploded view of the speaker group provided by an embodiment of the present invention;

[0043] Figure 4 FIG. 20 is a schematic diagram of the magnetic guiding bowl provided by an embodiment of the present invention;

[0044] Figure 5 FIG. 24 is a schematic diagram of the split structure of the magnetic guiding bowl provided by an embodiment of the present invention;

[0045] Figure 6 FIG. 28 is a schematic diagram of the first basin frame provided by an embodiment of the present invention;

[0046] Figure 7 FIG. 32 is a schematic diagram of the magnetic force lines of a partial structure of the speaker group provided by an embodiment of the present invention;

[0047] Figure 8 It is the second schematic diagram of the speaker group provided by the embodiment of the present invention;

[0048] Figure 9 is Figure 8 the partial enlarged view at position B in

[0049] Figure 10 It is the schematic diagram of the lead wire connected to the first spider;

[0050] Figure 11 It is the second exploded view of the speaker group provided by the embodiment of the present invention;

[0051] Figure 12 It is the third schematic diagram of the speaker group provided by the embodiment of the present invention;

[0052] Figure 13 It is the third exploded view of the speaker group provided by the embodiment of the present invention;

[0053] Figure 14 It is the schematic diagram of the first bottom surround provided by the embodiment of the present invention;

[0054] Figure 15 It is the partial structural sectional view of the speaker group provided by the embodiment of the present invention;

[0055] Figure 16 It is the schematic diagram of the first magnet provided by the embodiment of the present invention;

[0056] Figure 17 It is the schematic diagram of the first voice coil provided by the embodiment of the present invention;

[0057] Figure 18 It is the schematic diagram of the speaker box provided by the embodiment of the present invention;

[0058] Figure 19 It is the sectional view of the speaker box provided by the embodiment of the present invention;

[0059] Figure 20 It is the exploded view of the speaker box provided by the embodiment of the present invention.

[0060] In the figure:

[0061] 1. Common magnetic circuit module; 11. Magnetic conductive bowl; 111. First through hole; 112. Magnetic conductive plate; 113. Connecting cylinder; 114. Clamping plate; 115. Air flow channel; 12. First magnetic gap; 13. Second magnetic gap; 14. First magnet; 141. Magnetic block; 142. Magnetic gap; 15. Second magnet; 16. First magnetic conductive sheet; 17. Second magnetic conductive sheet; 18. Third magnetic conductive sheet; 191. First washer; 192. Second washer; 2. First speaker; 21. First voice coil; 211. Second through hole; 22. First chassis; 221. First through hole; 222. Step portion; 223. Third through hole; 23. First diaphragm assembly; 231. First sound film; 232. First vibrating plate; 2321. First mounting hole; 233. First dust cap; 234. First upper surround; 235. First lower surround; 2351. Hollow portion; 236. Third washer; 237. Fourth washer; 24. First spider; 241. Corrugated and wrinkled portion; 25. First support frame; 3. Second speaker; 31. Second voice coil; 32. Second chassis; 321. Second through hole; 33. Second diaphragm assembly; 331. Second sound film; 332. Second vibrating plate; 3321. Second mounting hole; 333. Second dust cap; 334. Second upper surround; 335. Second lower surround; 34. Second spider; 35. Second support frame; 4. Lead wire; 100. Box body. Detailed implementation mode

[0062] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all structures.

[0063] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly under and obliquely under the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0065] In the description of this embodiment, the orientation or positional relationship terms such as "up", "down", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0066] When the speaker is working normally, it will generate mechanical vibrations. Such vibrations will not only interfere with its own sound quality output, but also be transmitted to other components through the installation structure, resulting in abnormal vibrations of the audio device, and further affecting the sound quality performance.

[0067] Currently, most speakers in audio devices adopt a single-sided installation method. During the working process, the speaker will generate a reverse force, causing vibrations of other components inside the audio device. Such mechanical vibration phenomena will not only reduce the sound quality, but may also have an adverse impact on the stability and service life of the device. Moreover, the existing audio modules pursue the compactness of their own structures. Although the compact structure design helps to reduce the volume of the device, it also limits the heat dissipation space, resulting in heat accumulation and affecting the performance and life of the speaker. On the other hand, in order to achieve a good damping effect, the audio module usually needs to add additional structures or materials, which will further compress the installation space, limit the voice coil stroke of the speaker, and thus affect the low-frequency performance.

[0068] Therefore, there is an urgent need for a speaker group, a speaker box and an audio device to balance the requirements in multiple aspects such as damping, sound quality improvement and heat dissipation.

[0069] Such as Figures 1 - 17As shown in the figure, this embodiment provides a bi-directional speaker group, which includes a common-magnet magnetic circuit module 1, a first speaker 2, and a second speaker 3. The common-magnet magnetic circuit module 1 includes a magnetic guiding bowl 11. On the inner and outer sides of the magnetic guiding bowl 11 along the first direction, a first magnetic gap 12 and a second magnetic gap 13 are respectively provided. A first through hole 111 communicating the first magnetic gap 12 and the second magnetic gap 13 is formed on the magnetic guiding bowl 11. The first speaker 2 and the second speaker 3 are respectively arranged on both sides of the common-magnet magnetic circuit module 1 along the second direction. The first speaker 2 includes an annular first voice coil 21, and the second speaker 3 includes an annular second voice coil 31. The first voice coil 21 and the second voice coil 31 are coaxially arranged, and the first voice coil 21 is correspondingly arranged with the first magnetic gap 12. The first voice coil 21 can vibrate in the first magnetic gap 12 along the second direction. The second voice coil 31 is correspondingly arranged with the second magnetic gap 13. The second voice coil 31 can vibrate in the second magnetic gap 13 along the second direction.

[0070] In this embodiment, the common-magnet magnetic circuit module 1 includes a magnetic guiding bowl 11. On the inner and outer sides of the magnetic guiding bowl 11 along the first direction, a first magnetic gap 12 and a second magnetic gap 13 are respectively provided. The first speaker 2 and the second speaker 3 are respectively arranged on both sides of the common-magnet magnetic circuit module 1 along the second direction. The first speaker 2 includes an annular first voice coil 21, and the second speaker 3 includes an annular second voice coil 31. By vibrating the first voice coil 21 in the corresponding first magnetic gap 12 along the second direction and vibrating the second voice coil 31 in the corresponding second magnetic gap 13 along the second direction, the reverse forces generated when the first speaker 2 and the second speaker 3 work can be offset from each other, thereby reducing the phenomenon of mechanical vibration and avoiding the problems of sound quality interference and stability caused by the vibration of other components inside the audio equipment. Moreover, the above layout structure does not require additional shock-absorbing structures or materials, which is beneficial to improving the compactness of the overall structure. Without increasing additional installation space, by providing a first through hole 111 on the magnetic guiding bowl 11 to communicate the first magnetic gap 12 and the second magnetic gap 13, the heat dissipation effect of the overall structure is improved. Since the first voice coil 21 and the second voice coil 31 are coaxially arranged and vibrate in the corresponding independent magnetic gaps respectively, not only the vibration spaces of the first speaker 2 and the second speaker 3 are ensured, and the stroke of the voice coil is prevented from being restricted, but also the low-frequency performance of the speaker can be fully exerted, and the sound quality performance can be improved. Through the above settings, the bi-directional speaker group of this embodiment can balance the requirements of shock absorption, sound quality improvement, and heat dissipation.

[0071] The specific structure of the bi-directional speaker group will be described below:

[0072] Specifically, as Figure 1 shown, a non-magnetic part is provided on the magnetic guiding bowl 11, which can effectively isolate the magnetic field, avoid the mutual interference between magnetic circuits, and further improve the sound quality performance of the bi-directional speaker group, and avoid the abnormal sound quality caused by magnetic circuit interference.

[0073] More specifically, as Figures 1 - 5 shown, in this embodiment, the magnetic guiding bowl 11 includes a magnetic guiding plate 112, a connecting cylinder 113 and a clamping plate 114. The connecting cylinder 113 is provided with a through hole, which can provide an installation space for other components accommodating the bidirectional speaker group, thereby improving the compactness of the overall structure. The magnetic guiding plate 112 covers one end of the connecting cylinder 113, and the clamping plate 114 is arranged at the other end of the connecting cylinder 113. The clamping plate 114 extends along the circumferential direction of the connecting cylinder 113 towards the side away from the center of the connecting cylinder 113, so that the magnetic guiding plate 112 and the clamping plate 114 can fully play the role of magnetic guiding. The connecting cylinder 113 is configured as a non-magnetic guiding part, which can effectively isolate the magnetic field and avoid magnetic circuit interference.

[0074] More specifically, in some embodiments, the connecting cylinder 113 includes a plurality of connecting rings, and the plurality of connecting rings are connected end to end in sequence to form a cylindrical structure, so that operators can adjust the number of connecting rings according to actual needs, such as setting three, four or five, etc., thereby improving the structural flexibility and adjustability of the connecting cylinder 113, and being able to adapt to the assembly requirements of speakers with different sizes and shapes.

[0075] Moreover, the connecting cylinder 113 can be made of insulating materials such as polyimide, polytetrafluoroethylene or polycarbonate, which can reduce the influence of inductance on the bidirectional speaker group. It can not only effectively isolate the magnetic field and avoid magnetic circuit interference, but also protect relevant internal components from external influences, thereby improving the stability and reliability of the bidirectional speaker group.

[0076] Specifically, as Figure 4 shown, the magnetic guiding plate 112 and / or the clamping plate 114 are / is provided with a plurality of first through holes 111, and the plurality of first through holes 111 are arranged at intervals, which can optimize the air flow path inside the bidirectional speaker group, make the air flow smoother, be beneficial to improving the stability and clarity of the sound quality, and avoid sound quality abnormal problems caused by air accumulation or air pressure change.

[0077] Specifically, the magnetic guiding bowl 11 is configured as an integrally formed structure or a split structure, thereby providing multiple options for the processing and manufacturing of the magnetic guiding bowl 11. Among them, the integrally formed structure can improve the overall strength and stability of the magnetic guiding bowl 11 and reduce the assembly error, while the split structure is convenient for independent processing and assembly and improves the production efficiency. Those skilled in the art can choose according to actual design requirements and will not be limited too much here.

[0078] Specifically, as Figures 1 - 6As shown, the first speaker 2 further includes a first chassis 22 and a first diaphragm assembly 23. The first chassis 22 is provided with a first through hole 221 penetrating along the second direction. The outer peripheral edge of the first diaphragm assembly 23 is connected to the first chassis 22 and covers one end of the first through hole 221. The first chassis 22, as a support structure, can ensure the stable installation and vibration of the first diaphragm assembly 23. One end of the first voice coil 21 is connected to the first diaphragm assembly 23, and the other end is correspondingly arranged with the first magnetic gap 12, which can efficiently transfer the vibration of the first voice coil 21 in the magnetic field to the first diaphragm assembly 23, ensuring more stable and clear sound output; The second speaker 3 further includes a second chassis 32 and a second diaphragm assembly 33. The second chassis 32 is provided with a second through hole 321 penetrating along the second direction. The outer peripheral edge of the second diaphragm assembly 33 is connected to the second chassis 32 and covers one end of the second through hole 321. The second chassis 32 can ensure the stable installation and vibration of the second diaphragm assembly 33. One end of the second voice coil 31 is connected to the second diaphragm assembly 33, and the other end is correspondingly arranged with the second magnetic gap 13, which can efficiently transfer the vibration of the second voice coil 31 in the magnetic field to the second diaphragm assembly 33, ensuring more stable and clear sound output. Through the above settings, the connection strength of the structures of the first speaker 2 and the second speaker 3 is improved, ensuring that the first voice coil 21 and the second voice coil 31 can vibrate stably in their corresponding magnetic gaps respectively. Moreover, connecting the first chassis 22 and the second chassis 32, or the first chassis 22 and the second chassis 32 being an integrally formed structure can both improve the stability of the overall structure of the two-way speaker group.

[0079] Among them, the first chassis 22 and the second chassis 32 can be made of materials such as steel, plastic or alloy, enabling those skilled in the art to make flexible selections according to different design requirements and application scenarios. No excessive limitations are imposed on the specific materials of the above components here, as long as the above functions can be achieved.

[0080] Specifically, such as Figures 1 - 13As shown, the first diaphragm assembly 23 further includes a first vibrating plate 232 and a first dust cap 233. The first vibrating plate 232 is connected to the first chassis 22 and is provided with a first mounting hole 2321. One end of the first voice coil 21 is placed in the first mounting hole 2321. The first dust cap 233 is connected to one end of the first voice coil 21 and covers the first mounting hole 2321. The second diaphragm assembly 33 further includes a second vibrating plate 332 and a second dust cap 333. The second vibrating plate 332 is connected to the second chassis 32 and is provided with a second mounting hole 3321. One end of the second voice coil 31 is placed in the second mounting hole 3321. The second dust cap 333 is connected to one end of the second voice coil 31 and covers the second mounting hole 3321. By providing the first dust cap 233 and the second dust cap 333, the first voice coil 21 and the second voice coil 31 can be protected from dust and other impurities, ensuring the normal operation and service life of the voice coil. At the same time, by providing the first vibrating plate 232 and the second vibrating plate 332, stable vibration support can be provided for the voice coil, ensuring the stability and consistency of the sound quality and avoiding problems of sound quality degradation.

[0081] More specifically, the first diaphragm assembly 23 further includes a first sound film 231. The first sound film 231 is connected to one end of the first voice coil 21 and is disposed between the first voice coil 21 and the first dust cap 233. The second diaphragm assembly 33 further includes a second sound film 331. The second sound film 331 is connected to one end of the second voice coil 31 and is disposed between the second voice coil 31 and the second dust cap 333, such that the first sound film 231 and the second sound film 331 can be directly connected to the corresponding voice coils, thereby efficiently transmitting the vibration of the voice coils to the corresponding sound films, ensuring that the sound output is more stable and clear. At the same time, by disposing the sound films between the corresponding voice coils and the dust caps, dust and other impurities can be effectively prevented from entering the interior of the voice coils, avoiding problems such as sound quality degradation or voice coil damage caused by foreign object interference, thereby extending the service life of the speaker and ensuring the stability and reliability of the sound quality.

[0082] Specifically, as Figures 1 - 11 shown, the first speaker 2 further includes a first spider 24. One end of the first spider 24 is connected to the first vibrating plate 232, and the other end is connected to the first chassis 22. The second speaker 3 further includes a second spider 34. One end of the second spider 34 is connected to the second vibrating plate 332, and the other end is connected to the second chassis 32. By providing the first spider 24 and the second spider 34, additional support and connection can be provided for the first vibrating plate 232 and the second vibrating plate 332, improving the structural stability of the first diaphragm assembly 23 and the second diaphragm assembly 33 itself. At the same time, the above setting helps to optimize the vibration characteristics, reduce the energy loss during the vibration process, thereby improving the sound quality performance and avoiding problems such as abnormal sound quality.

[0083] More specifically, as Figures 1 - 11As shown, in some embodiments, a first accommodation groove is formed between the connecting cylinder 113 and the magnetic conduction plate 112. The first magnet 14 is disposed in the first accommodation groove, and a first washer 191 is clamped between the first magnet 14 and the magnetic conduction plate 112. One end of the clamping plate 114 away from the connecting cylinder 113 extends along the second direction and forms a second accommodation groove with the connecting cylinder 113. The second magnet 15 is disposed in the second accommodation groove, and a second washer 192 is clamped between the second magnet 15 and the clamping plate 114. By providing the first accommodation groove and the second accommodation groove, stable installation positions are provided for the first magnet 14 and the second magnet 15, so that the first magnet 14 and the second magnet 15 will not be displaced or loosened during operation, ensuring the stability and consistency of the magnetic field. Moreover, by providing the first washer 191 and the second washer 192, not only can the mechanical stress between the first magnet 14 and the magnetic conduction plate 112, and between the second magnet 15 and the clamping plate 114 be buffered, reducing component damage caused by vibration or impact, but also an insulating and dust-proof effect can be achieved, prolonging the service life of the first magnet 14 and the second magnet 15, and ensuring the stability and consistency of the sound quality.

[0084] More specifically, the common magnetic circuit module 1 further includes a third magnetic conduction sheet 18. The third magnetic conduction sheet 18 is disposed in the first accommodation groove, thereby optimizing the distribution and conduction efficiency of the magnetic circuit. The first voice coil 21 is disposed around the outside of the third magnetic conduction sheet 18 and is disposed between the first magnet 14 and the third magnetic conduction sheet 18, which can ensure that the vibration of the first voice coil 21 in the magnetic field is more stable and accurate, reduce its vibration deviation, and improve the consistency of the sound quality.

[0085] Specifically, as Figures 1 - 3 shown, the first speaker 2 further includes a first support frame 25. The first support frame 25 is disposed between the first voice coil 21 and the first chassis 22. One end of the first support frame 25 is connected to the first vibrating plate 232, and the other end is connected to the first chassis 22 through the first suspension 24. The second speaker 3 further includes a second support frame 35. The second support frame 35 is disposed between the second voice coil 31 and the second chassis 32. One end of the second support frame 35 is connected to the second vibrating plate 332, and the other end is connected to the second chassis 32 through the second suspension 34. By providing the first support frame 25 and the second support frame 35, more stable support can be provided for the bi-directional speaker group, further optimizing the acoustic performance. At the same time, the first support frame 25 and the second support frame 35 can also separate the internal spaces of the first speaker 2 and the second speaker 3, avoiding interference between the internal airflows, thereby improving the stability and consistency of the sound quality and avoiding problems such as a decrease in sound quality caused by the undivided internal space.

[0086] More specifically, as Figure 3As shown, in this embodiment, both the first support frame 25 and the second support frame 35 are circular ring structures. The first support piece 24 surrounds the outer peripheral wall of the first support frame 25, and the second support piece 34 surrounds the outer peripheral wall of the second support frame 35, enabling the first support frame 25 and the second support to provide stable support for the two-way speaker group while optimizing the acoustic performance. Moreover, the first support frame 25 and the second support frame 35 can also separate the internal spaces of the first speaker 2 and the second speaker 3 to optimize the internal air pressure balance.

[0087] In other embodiments, both the first support frame 25 and the second support frame 35 are frame structures, which can provide a larger support area and further enhance the structural stability of the two-way speaker group. In some other embodiments, by not providing the first support frame 25 and the second support frame 35, the structure of the two-way speaker group can be simplified and the manufacturing cost can be reduced. It can be understood that there are no excessive limitations on the self-structures of the first support frame 25 and the second support frame 35 or whether they are provided or not, as long as the above functions can be achieved.

[0088] Specifically, as Figures 1 - 10 shown, the two-way speaker group further includes a lead wire 4. The first support piece 24 and / or the second support piece 34 is provided with a corrugated fold portion 241. The corrugated fold portion 241 extends in a first direction and forms a plurality of continuous wave peaks and wave valleys. The lead wire 4 is arranged along the contour of the corrugated fold portion 241 and abuts against the surface of the corrugated fold portion 241, which can reduce the installation space of the lead wire 4 and improve the compactness of the overall structure. Moreover, by the lead wire 4 reciprocally passing through the wavy corrugated fold portion 241, the lead wire 4 can be effectively fixed to prevent the lead wire 4 from loosening or shifting.

[0089] In addition, as Figures 8 - 13 shown, in some other embodiments, to further simplify the structure of the two-way speaker group, the two-way speaker group does not include the first support frame 25 and the second support frame 35, thereby reducing the self-weight and the manufacturing cost. The specific implementation method is as follows:

[0090] Specifically, as Figure 12 and Figure 13As shown, the first diaphragm assembly 23 also includes a first upper folding ring 234 and a first lower folding ring 235, the first lower folding ring 235 is abutted against the first basin frame 22, and the first upper folding ring 234 and the first lower folding ring 235 are clamped on both sides of the first vibration plate 232. The second diaphragm assembly 33 also includes a second upper folding ring 334 and a second lower folding ring 335, the second lower folding ring 335 is abutted against the second basin frame 32, and the second upper folding ring 334 and the second lower folding ring 335 are clamped on both sides of the second vibration plate 332. Such an arrangement can provide stable support and good vibration conduction for the first vibration plate 232 and the second vibration plate 332, while reducing energy loss during vibration, thereby improving sound quality performance and avoiding the problem of sound quality degradation caused by poor vibration characteristics.

[0091] Specifically, Figures 12 - 14 As shown, the first lower folding ring 235 and / or the second lower folding ring 335 are provided with a plurality of hollow portions 2351 at intervals along their own circumference, which can reduce the weight of the first diaphragm assembly 23 and / or the second diaphragm assembly 33 and improve the vibration efficiency, thereby improving the sound quality performance of the two-way speaker and avoiding the problem of sound quality degradation caused by the excessive weight of the first diaphragm assembly 23 and / or the second diaphragm assembly 33.

[0092] More specifically, the first lower folding ring 235 and / or the second lower folding ring 335 are provided with a plurality of openings at intervals along their own circumference, and the openings are hollow portions 2351. Such a configuration not only reduces the weight of the first diaphragm assembly 23 and / or the second diaphragm assembly 33, but also facilitates smooth airflow between the first lower folding ring 235 and / or the second lower folding ring 335, thereby avoiding abnormal sound quality caused by airflow accumulation, and further optimizing the acoustic performance of the two-way speaker group.

[0093] Specifically, Figure 12 As shown, the first upper folding ring 234 and the first lower folding ring 235 have a first vibration plate 232 at one end, and a third gasket 236 at the other end; the second upper folding ring 334 and the second lower folding ring 335 have a second vibration plate 332 at one end, and a fourth gasket 237 at the other end. Through the above arrangement, the vibration characteristics of the first diaphragm assembly 23 and the second diaphragm assembly 33 can be further optimized, the energy loss during the vibration process can be reduced, and additional structural stability can be provided. It should be noted that those skilled in the art can adopt a split structure or an integrated structure for the above components according to corresponding design requirements. The split structure is convenient for independent processing and assembly, and improves production efficiency; while the integrated structure can further enhance the stability of the overall structure and reduce assembly errors. The specific structural form of the above components is not limited too much here.

[0094] Specifically, Figures 1 - 16As shown, the common magnetic circuit module 1 further includes a first magnet 14 and a second magnet 15. The first magnet 14 is disposed inside the magnetic conductive bowl 11, and a first magnetic gap 12 is formed between the first magnet 14 and the inner wall of the magnetic conductive bowl 11. The first voice coil 21 is disposed around the outside of the first magnet 14. The second magnet 15 is disposed outside the magnetic conductive bowl 11, and a second magnetic gap 13 is formed between the second magnet 15 and the outer wall of the magnetic conductive bowl 11. The second magnet 15 is disposed around the outside of the second voice coil 31. Such an arrangement can provide a stable magnetic field environment for the first voice coil 21 and the second voice coil 31, ensuring that the vibrations of the first voice coil 21 and the second voice coil 31 in the magnetic field are more stable and accurate, thereby improving the sound quality performance and avoiding problems such as abnormal sound quality or vibration deviation caused by unstable magnetic fields.

[0095] More specifically, as Figure 7 shown, the magnetic force lines formed by the first magnet 14 and the second magnet 15 in this embodiment form a closed loop. By sharing the magnetic circuit of the first magnet 14 and the second magnet 15 by the first voice coil 21 and the second voice coil 31, the reverse forces generated by each other can be effectively offset, reducing mechanical vibration, thereby improving the sound quality performance. It should be noted that Figure 7 only an exemplary description of the magnetic circuit is given, and those skilled in the art can modify the present application to obtain other expandable magnetic circuit designs, which all fall within the protection scope of the present application. The specific setting method of the magnetic circuit is not limited too much here.

[0096] Among them, the first magnet 14 and the second magnet 15 can be made of materials such as neodymium iron boron and ferrite. The specific materials of the above components are not limited too much here, as long as the above functions can be achieved.

[0097] Specifically, as Figures 1 - 13 shown, the common magnetic circuit module 1 further includes a first magnetic conductive sheet 16 and a second magnetic conductive sheet 17. The first magnetic conductive sheet 16 is disposed on the first magnet 14, and the second magnetic conductive sheet 17 is disposed on the second magnet 15, which can further optimize the performance of the magnetic circuit, improve the stability and uniformity of the magnetic field, thereby providing a better working environment for the first voice coil 21 and the second voice coil 31, making the vibration of the voice coil in the magnetic field more stable and accurate.

[0098] Specifically, as Figures 1 - 15 shown, the magnetic conductive bowl 11, the first magnet 14 and the first magnetic conductive sheet 16 are provided with an air flow channel 115 in a penetrating manner. The first speaker 2 and the second speaker 3 are interconnected through the air flow channel 115, which can optimize the air flow path inside the two-way speaker group, relieve the vibration of the sound film caused by air pressure change when the first speaker 2 and the second speaker 3 work, reduce the negative impact of mechanical vibration on the sound quality, and thus further improve the stability and clarity of the sound quality.

[0099] Specifically, as Figures 1 - 16As shown, the first magnet 14 and / or the second magnet 15 each include a plurality of magnet blocks 141 arranged at intervals, and magnetic gaps 142 are formed between the magnet blocks 141, making the magnetic field distribution more uniform, which is beneficial for the voice coil to vibrate more stably in the magnetic field, reducing vibration deviation caused by uneven magnetic field, thereby reducing the distortion of sound and improving the purity and consistency of sound quality. Moreover, the plurality of magnet blocks 141 enclose to form an annular structure, which can generate a relatively concentrated and strong magnetic field, and further provide a more powerful magnetic field drive for the first voice coil 21 and the second voice coil 31, enhancing the vibration amplitude of the voice coil, and then improving the sensitivity of the speaker, making the sound output clearer and louder.

[0100] Specifically, as Figures 1 - 9 shown, along the second direction, the first chassis 22 and / or the second chassis 32 are provided with a plurality of interconnected stepped portions 222, and the stepped portions 222 are provided with third through holes 223 for communicating with the outside. Since the third through holes 223 are opened in the stepped portions 222 at different positions, it is convenient to realize the external air flow exchange of different cavities inside the speaker, thereby further improving the heat dissipation effect.

[0101] More specifically, there are a plurality of third through holes 223, and the plurality of third through holes 223 are arranged at intervals along the circumferential direction of the first chassis 22 and / or the second chassis 32, which can provide a plurality of air flow channels 115, further optimizing the air flow inside the speaker, reducing the abnormal sound quality caused by air pressure change, and thus improving the acoustic performance of the two-way speaker group.

[0102] Specifically, as Figures 1 - 17 shown, the first voice coil 21 and / or the second voice coil 31 are provided with a plurality of second through holes 211 at intervals along their circumferences, which can ensure the heat dissipation performance of the first voice coil 21 and / or the second voice coil 31, and then improve the service life of the above components. At the same time, it avoids the problem of sound quality decline caused by overheating, thereby improving the overall performance of the speaker.

[0103] Among them, the number of the second through holes 211 can be set to two, three or four, and the specific number of the second through holes 211 is not limited too much here.

[0104] More specifically, in this embodiment, the diameter of the first voice coil 21 is smaller than the diameter of the second voice coil 31, that is, the two voice coils are arranged with one large and one small. Since the smaller first voice coil 21 can provide higher high-frequency response, and the larger second voice coil 31 can enhance the low-frequency performance, through their collaborative work, a wider frequency response range and a more balanced sound quality effect can be achieved, thereby optimizing the acoustic performance of the speaker group.

[0105] In other embodiments, the diameter of the first voice coil 21 is larger than the diameter of the second voice coil 31, or the diameters of the two voice coils are the same, thereby improving the applicability and flexibility of the speaker group, and the specific sizes of the above voice coils are not limited too much here.

[0106] It should be noted that for the bi-directional speaker group provided in this embodiment, by sharing the same magnetic circuit between the first voice coil 21 and the second voice coil 31, the reverse acting forces of the two can cancel each other out during bi-directional operation, thereby reducing mechanical vibration and improving the sound quality performance, and thus bringing a more pleasant music listening experience to the user. Moreover, the structure of the bi-directional speaker group in this embodiment is more compact and can be applied to a speaker module with a small volume. By the front and back sound emission of the speaker module, the power handling capacity and the input energy loudness of the speaker module are improved, and a panoramic sound experience can be brought to the user. And through the above through-hole design, the heat dissipation performance of the overall structure is improved, which is beneficial to improving the service life of each component.

[0107] In addition, it should be noted that the "through hole", "penetrating hole" or "mounting hole" in this embodiment refers to a hole or passage that penetrates two opposite surfaces of a component. Those skilled in the art can adjust and improve the above "hole or passage" in this embodiment based on the technical solution of this application in combination with common general knowledge, and they should all fall within the protection scope of this application.

[0108] As Figures 1 - 20 shown, this embodiment also provides a speaker, which includes a box body 100 and the above bi-directional speaker group. The bi-directional speaker group is assembled in the box body 100. By optimizing the self-installation structure and layout of the bi-directional speaker group, the influence of mechanical vibration on the sound quality is reduced, and both shock absorption and performance improvement can be achieved within a limited space.

[0109] Specifically, as Figure 20 shown, the box body 100 includes a first shell and a second shell that are connected to each other. The bi-directional speaker group is assembled between the first shell and the second shell and is electrically connected to a power supply device through a wire, which facilitates the installation and maintenance of the bi-directional speaker group and also provides a stable support structure for the bi-directional speaker group. Through the electrical connection of the wire with the power supply device, the stable power supply of the speaker group is ensured, and the sound quality problems caused by unstable power supply are avoided.

[0110] It should be noted that the shape, size, material of the box body 100, and the cooperation method with the speaker are not limited. The bi-directional speaker group can be set to two groups, three groups or four groups, and the specific quantity is not overly limited. Specifically, it can be flexibly configured according to the power requirement and sound quality performance of the speaker.

[0111] In other embodiments, the cabinet 100 can be a sealed box, a ported box or a box with a passive radiator, etc., thus further improving the applicability and flexibility of the speaker. Among them, the sealed box can provide good low-frequency response and a smaller volume of the cabinet 100, and is suitable for application scenarios with high requirements for low frequency; while the ported box can enhance the low-frequency effect through the air flow in the cabinet 100 and is suitable for users with high requirements for low-frequency quantity; and the passive radiator can further improve the low-frequency performance while maintaining the compactness of the cabinet 100.

[0112] This embodiment also provides an audio device, which includes the above-mentioned bidirectional speaker group and can balance shock absorption and improve its own performance in a limited space. Among them, the audio device of this embodiment includes but is not limited to headphones, speakers, CD players, recorders and mobile communication terminals.

[0113] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Bi-directional speaker group, characterized in that, Comprising: A common-magnet magnetic circuit module (1), including a magnetic-conducting bowl (11), with a first magnetic gap (12) and a second magnetic gap (13) respectively provided on the inner and outer sides of the magnetic-conducting bowl (11) along a first direction, and a first through-hole (111) communicating the first magnetic gap (12) and the second magnetic gap (13) is formed on the magnetic-conducting bowl (11); A first loudspeaker (2) and a second loudspeaker (3), respectively arranged on both sides of the common-magnet magnetic circuit module (1) along a second direction. The first loudspeaker (2) includes an annular first voice coil (21), and the second loudspeaker (3) includes an annular second voice coil (31). The first voice coil (21) and the second voice coil (31) are coaxially arranged, and the first voice coil (21) is correspondingly arranged with the first magnetic gap (12). The first voice coil (21) can vibrate in the first magnetic gap (12) along the second direction. The second voice coil (31) is correspondingly arranged with the second magnetic gap (13), and the second voice coil (31) can vibrate in the second magnetic gap (13) along the second direction.

2. The bi-directional speaker group according to claim 1, wherein A non-magnetic portion is provided on the magnetic-conducting bowl (11).

3. The bi-directional speaker group according to claim 2, wherein The magnetic-conducting bowl (11) includes a magnetic-conducting plate (112), a connecting cylinder (113), and a clamping plate (114). The connecting cylinder (113) is provided in a through manner. The magnetic-conducting plate (112) covers one end of the connecting cylinder (113), and the clamping plate (114) is arranged at the other end of the connecting cylinder (113). The clamping plate (114) extends along the circumferential direction of the connecting cylinder (113) towards the side away from the center of the connecting cylinder (113). The connecting cylinder (113) is configured as the non-magnetic portion.

4. The bi-directional speaker group according to claim 3, wherein, The first through-hole (111) is formed in the magnetic-conducting plate (112) and / or the clamping plate (114). There are multiple first through-holes (111), and the multiple first through-holes (111) are arranged at intervals.

5. The bidirectional speaker group according to claim 1, characterized in that, The magnetic-conducting bowl (11) is configured as an integrally formed structure or a split structure.

6. The bi-directional speaker group according to claim 1, wherein The first loudspeaker (2) further includes a first chassis (22) and a first diaphragm assembly (23). The first chassis (22) is provided with a first through-hole (221) penetrating along the second direction. The outer peripheral edge of the first diaphragm assembly (23) is connected to the first chassis (22) and covers one end of the first through-hole (221). One end of the first voice coil (21) is connected to the first diaphragm assembly (23), and the other end is correspondingly arranged with the first magnetic gap (12); The second loudspeaker (3) further includes a second chassis (32) and a second diaphragm assembly (33). The second chassis (32) is provided with a second through-hole (321) penetrating along the second direction. The outer peripheral edge of the second diaphragm assembly (33) is connected to the second chassis (32) and covers one end of the second through-hole (321). One end of the second voice coil (31) is connected to the second diaphragm assembly (33), and the other end is correspondingly arranged with the second magnetic gap (13); The first speaker frame (22) is connected to the second speaker frame (32); alternatively, the first speaker frame (22) and the second speaker frame (32) are of an integrally formed structure.

7. The bi-directional speaker group according to claim 6, characterized in that, The first diaphragm assembly (23) further includes a first vibrating plate (232) and a first dust cap (233). The first vibrating plate (232) is connected to the first speaker frame (22) and is provided with a first mounting hole (2321). One end of the first voice coil (21) is placed in the first mounting hole (2321). The first dust cap (233) is connected to one end of the first voice coil (21) and covers the first mounting hole (2321). The second diaphragm assembly (33) further includes a second vibrating plate (332) and a second dust cap (333). The second vibrating plate (332) is connected to the second speaker frame (32) and is provided with a second mounting hole (3321). One end of the second voice coil (31) is placed in the second mounting hole (3321). The second dust cap (333) is connected to one end of the second voice coil (31) and covers the second mounting hole (3321).

8. The bi-directional speaker group according to claim 7, wherein, The first speaker (2) further includes a first suspension (24). One end of the first suspension (24) is connected to the first vibrating plate (232), and the other end is connected to the first speaker frame (22). The second speaker (3) further includes a second suspension (34). One end of the second suspension (34) is connected to the second vibrating plate (332), and the other end is connected to the second speaker frame (32).

9. The bi-directional speaker group according to claim 8, wherein The first speaker (2) further includes a first support frame (25). The first support frame (25) is disposed between the first voice coil (21) and the first speaker frame (22). One end of the first support frame (25) is connected to the first vibrating plate (232), and the other end is connected to the first speaker frame (22) through the first suspension (24). The second speaker (3) further includes a second support frame (35). The second support frame (35) is disposed between the second voice coil (31) and the second speaker frame (32). One end of the second support frame (35) is connected to the second vibrating plate (332), and the other end is connected to the second speaker frame (32) through the second suspension (34).

10. The bi-directional speaker group according to claim 8, characterized in that, The bi-directional speaker group further includes a lead wire (4). A corrugated fold portion (241) is provided on the first suspension (24) and / or the second suspension (34). The corrugated fold portion (241) extends along the first direction and forms a plurality of continuous crests and troughs. The lead wire (4) is disposed along the contour of the corrugated fold portion (241) and abuts against the surface of the corrugated fold portion (241).

11. The bi-directional speaker group according to claim 7, wherein The first diaphragm assembly (23) further includes a first upper surround (234) and a first lower surround (235). The first lower surround (235) abuts against the first speaker frame (22). The first upper surround (234) and the first lower surround (235) are clamped on both sides of the first vibrating plate (232). The second diaphragm assembly (33) further includes a second upper surround (334) and a second lower surround (335). The second lower surround (335) abuts against the second chassis (32), and the second upper surround (334) and the second lower surround (335) are clamped on both sides of the second diaphragm (332).

12. The bi-directional speaker group according to claim 11, wherein The first lower surround (235) and / or the second lower surround (335) are provided with a plurality of hollow portions (2351) at intervals along their circumferences.

13. The bi-directional speaker group according to claim 1, wherein, The common magnetic circuit module (1) further includes a first magnet (14) and a second magnet (15). The first magnet (14) is disposed inside the magnetic bowl (11), and a first magnetic gap (12) is formed between the first magnet (14) and the inner wall of the magnetic bowl (11). The first voice coil (21) is disposed around the outside of the first magnet (14). The second magnet (15) is disposed outside the magnetic bowl (11), and a second magnetic gap (13) is formed between the second magnet (15) and the outer wall of the magnetic bowl (11). The second magnet (15) is disposed around the outside of the second voice coil (31).

14. The bi-directional speaker group according to claim 13, wherein The common magnetic circuit module (1) further includes a first magnetic sheet (16) and a second magnetic sheet (17). The first magnetic sheet (16) is disposed on the first magnet (14), and the second magnetic sheet (17) is disposed on the second magnet (15).

15. The bi-directional speaker set according to claim 14, wherein, The magnetic bowl (11), the first magnet (14) and the first magnetic sheet (16) are provided with an air flow channel (115) therethrough, and the first speaker (2) and the second speaker (3) are communicated with each other through the air flow channel (115).

16. The bi-directional speaker group according to claim 13, wherein, The first magnet (14) and / or the second magnet (15) each include a plurality of spaced-apart magnetic blocks (141), and a magnetic gap (142) is formed between the magnetic blocks (141). The plurality of magnetic blocks (141) are arranged to form an annular structure.

17. The bi-directional speaker group according to claim 6, characterized in that, Along the second direction, the first chassis (22) and / or the second chassis (32) are provided with a plurality of interconnected stepped portions (222), and the stepped portions (222) are provided with third through holes (223) for communicating with the outside.

18. The bi-directional speaker group according to any one of claims 1-17, characterized in that, The first voice coil (21) and / or the second voice coil (31) are provided with a plurality of second through holes (211) at intervals along their circumferences.

19. Speaker, characterized in that, It includes a box body (100) and the bi-directional speaker group according to any one of claims 1-18, and the bi-directional speaker group is assembled in the box body (100).

20. An audio device, characterized in that, It includes the bi-directional speaker group according to any one of claims 1-18.

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