Sound production monomer and electronic equipment

Abstract

The invention discloses a sound production monomer and electronic equipment, and relates to the technical field of electro-acoustic conversion. The sound production monomer comprises a vibration unit, a magnetic circuit unit and a unit cell unit, the vibration unit comprises a vibrating diaphragm and a voice coil, and the vibrating diaphragm and the voice coil vibrate along a first direction; the magnetic circuit unit is located on one side of the vibrating diaphragm along the first direction, and an installation cavity is defined by the magnetic circuit unit, the voice coil and the vibrating diaphragm; the unit cell unit is arranged in the mounting cavity, the unit cell unit is supported on the magnetic circuit unit, a gap is formed between the unit cell unit and the vibrating diaphragm, the unit cell unit is provided with a plurality of turbulent flow channels penetrating through the unit cell unit, the extending paths of the turbulent flow channels are different from the path extending in the first direction, and the unit cell unit is arranged in the mounting cavity. Extending paths of the multiple turbulent flow channels are at least partially different, and any two turbulent flow channels are arranged in a mutually communicated or mutually isolated mode. Standing waves can be eliminated, BL frequency response curve fluctuation is small, distortion is reduced, and acoustic performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electro-acoustic conversion, in particular to a sound emitting monomer and electronic equipment. BACKGROUND

[0002] As an important sound emitting device, the acoustic quality of a loudspeaker is crucial to the performance of the loudspeaker. At present, the diaphragm in the loudspeaker drives air to emit sound, and the generated sound waves are easily reflected at the internal interface when propagating. The reflected sound waves and the sound waves continuously generated by the diaphragm are superimposed to form a standing wave. This standing wave phenomenon has a significant negative impact on the acoustic performance of the loudspeaker. The most prominent defect is that it can seriously destroy the flatness of the frequency response of the loudspeaker, and produce sharp peaks or valleys at some frequency points of the BL frequency response curve, resulting in serious distortion of sound and poor acoustic performance. It is a key technical problem that has existed for a long time and needs to be solved urgently in the design of the entire loudspeaker. SUMMARY

[0003] The main purpose of the present application is to provide a sound emitting monomer and electronic equipment, which aims to solve the technical problem of serious distortion of the existing sound emitting monomer.

[0004] To achieve the above-mentioned purpose, the present application provides a sound emitting monomer, which comprises: a vibration unit, the vibration unit comprising a diaphragm and a voice coil, the diaphragm and the voice coil vibrating along a first direction; a magnetic circuit unit, the magnetic circuit unit being located on one side of the diaphragm along the first direction and surrounding the voice coil and the diaphragm to form a mounting cavity; a unit cell, the unit cell being arranged in the mounting cavity, the unit cell being supported on the magnetic circuit unit and forming a gap between the unit cell and the diaphragm, the unit cell having a plurality of turbulence channels penetrating the unit cell, the extension paths of the plurality of turbulence channels being different from the path extending along the first direction, and the extension paths of the plurality of turbulence channels being at least partially different, any two of the turbulence channels being arranged in communication or isolation with each other.

[0005] In an embodiment, the unit cell has a plurality of turbulence surfaces, at least one of the turbulence surfaces being arranged towards the diaphragm. Each of the turbulence surfaces is formed with a plurality of turbulence openings, any two of the turbulence openings located on the same or different turbulence surfaces being connected by at least one of the turbulence channels.

[0006] In an embodiment, each of the turbulence channels is arranged in a curved manner and comprises at least one curved segment. When the turbulence passage comprises at least two of the curved segments, the curved direction of at least one of the curved segments is different from the curved direction of the rest of the curved segments, or the curved direction of at least one of the curved segments is the same as the curved direction of the rest of the at least one of the curved segments.

[0007] In an embodiment, the shape of the turbulence surface arranged towards the diaphragm matches the shape of the diaphragm, and a uniform gap is formed between the two.

[0008] In an embodiment, the distance between the turbulence surface arranged towards the diaphragm and the diaphragm is B, wherein 0.5mm≤B≤1.5mm.

[0009] In an embodiment, at least one of the turbulence surfaces is supported by the magnetic circuit unit; The turbulence surface arranged towards the diaphragm is a first turbulence surface, and the turbulence surface supported by the magnetic circuit unit is a second turbulence surface; At least part of the turbulence passage penetrates from the first turbulence surface to the second turbulence surface.

[0010] In an embodiment, the diaphragm has a spherical top, and at least part of the unit cell is a hemispherical structure arranged corresponding to the spherical top.

[0011] In an embodiment, the unit cell is a three-dimensionally periodically arranged hole network structure; And / or, the unit cell is an integrally formed engineering plastic piece or an aluminum piece or a red copper piece; And / or, the cross-sectional area of each of the turbulence passages is S, wherein, .

[0012] In an embodiment, the magnetic circuit unit is formed with an air passage corresponding to the position of the unit cell, and at least part of the turbulence passage is in communication with the air passage.

[0013] In an embodiment, the side of the unit cell towards the magnetic circuit unit is formed with a support surface, the support surface is supported by the magnetic circuit unit, and the support surface and the magnetic circuit unit are bonded or clamped together.

[0014] In an embodiment, the unit cell is provided with a guide column corresponding to the air passage, the guide column is connected to the support surface and extends towards the inside of the air passage along the first direction.

[0015] In an embodiment, the guide column is integrally arranged with the unit cell or separately arranged with the unit cell; And / or, The guide column is matched with and abuts against the inner wall of the air passage to limit the insertion in the air passage, or there is a gap between the guide column and the inner wall of the air passage.

[0016] In an embodiment, the guide column is a solid column; the guide column is a non-porous column, or the guide column is also provided with at least one turbulence passage therethrough. Alternatively, the guide column is provided in a hollow manner to communicate at least part of the turbulence passage with the air passage; the side wall of the guide column is a non-porous wall, or the side wall of the guide column is also provided with at least one turbulence passage therethrough.

[0017] In an embodiment, the sound production unit further comprises an outer shell and a yoke, the yoke, the vibration unit and the magnetic circuit unit are located in the outer shell, the yoke surrounds the magnetic circuit unit, the outer edge of the diaphragm is mounted between the outer shell and the yoke, a rear cavity is formed between the outer shell and the yoke, the yoke is provided with a wind passage communicating with the rear cavity, and the outer shell is provided with a gas leakage hole communicating with the rear cavity.

[0018] In an embodiment, the outer shell has a first shell wall and a second shell wall oppositely arranged along a first direction, and the yoke comprises an end wall and a side wall; the end wall is mounted to the first shell wall, and the outer edge of the diaphragm is mounted between the end wall and the first shell wall; the side wall is arranged along the first direction and mounted between the end wall and the second shell wall, and the second shell wall is provided with the gas leakage hole. The side wall is provided with the wind passage, and the wind passage extends from a position close to the end wall along the first direction towards the second shell wall and penetrates through the side wall.

[0019] In an embodiment, a foam with micropores is interposed between the side of the magnetic circuit unit away from the spherical top and the second shell wall.

[0020] The application further provides an electronic device applying the sound production unit.

[0021] In the sound production unit, the diaphragm, the voice coil and the magnetic circuit unit form an installation cavity, and the unit cell is arranged in the installation cavity, so that the installation cavity formed by the diaphragm, the voice coil and the magnetic circuit unit is used to accommodate the unit cell, without occupying additional space of the sound production unit, so that the structure is compact and conducive to the miniaturization design of the sound production unit. A gap is formed between the unit cell and the diaphragm to provide sufficient vibration space for the up-down vibration of the diaphragm, so as to avoid the interference of the unit cell on the vibration of the diaphragm, and the design is reasonable.

[0022] The cell unit has a plurality of turbulence channels penetrating therethrough, and the plurality of turbulence channels, i.e. the extension paths of all the turbulence channels, are different from the path extending along the first direction. When the vibration unit vibrates the diaphragm to drive the air to produce sound along the first direction, the continuously generated sound waves propagate along the first direction and into each turbulence channel of the cell unit, but since the extension paths of all the turbulence channels of the cell unit are not the path extending along the first direction, the reflected sound waves generated by the inner walls of each turbulence channel are not the sound waves along the first direction, so as to disturb the sound waves entering the turbulence channels, and the continuously generated sound waves and the reflected sound waves will not superimpose on each other, thereby fundamentally inhibiting the generation and accumulation of standing waves, eliminating the standing waves, reducing the distortion of the BL frequency response curve, and improving the acoustic performance. Moreover, the extension paths of all the turbulence channels are at least partially different, so that at least part of the turbulence channels are dispersed to extend along different paths, further dispersing and consuming the reflected sound waves, improving the sound damping effect, and further improving the reliability of eliminating the standing waves, reducing the distortion, and effectively improving the acoustic performance.

[0023] In addition, any two turbulence channels of the cell unit can be in communication with each other, so that the plurality of turbulence channels interfere with each other, increasing the multidirectionality and diversity of the extension paths, and further improving the reliability of eliminating the standing waves. Alternatively, any two turbulence channels of the cell unit are arranged in isolation, so as to simplify the manufacturing difficulty and facilitate the manufacturing. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0025] Figure 1 Assembly view of the sound production monomer of an embodiment of the present application; Figure 2 Exploded view of the sound production monomer of an embodiment of the present application; Figure 3 Sectional view of the sound production monomer of an embodiment of the present application; Figure 4 Another sectional view of the sound production monomer of an embodiment of the present application; Figure 5 Still another sectional view of the sound production monomer of an embodiment of the present application; Figure 6 Sectional view of the sound production monomer of another embodiment of the present application; Figure 7 Sectional view of the sound production monomer of still another embodiment of the present application; Figure 8 A cross-sectional view of a sound emitting unit according to another embodiment of the present application; Figure 9 A structural view of a guide pillar provided in a unit cell of a sound emitting unit according to an embodiment of the present application; Figure 10 Another structural view of a guide pillar provided in a unit cell of a sound emitting unit according to an embodiment of the present application; Figure 11 Still another structural view of a guide pillar provided in a unit cell of a sound emitting unit according to an embodiment of the present application; Figure 12 Still another structural view of a guide pillar provided in a unit cell of a sound emitting unit according to an embodiment of the present application; Figure 13 Still another structural view of a guide pillar provided in a unit cell of a sound emitting unit according to an embodiment of the present application; Figure 14 A comparison diagram of BL frequency response curves of a sound emitting unit according to the prior art and the present application.

[0026] BRIEF DESCRIPTION OF THE DRAWINGS 100, sound emitting unit; 10, vibration unit; 11, diaphragm; 111, dome; 12, voice coil; 20, magnetic circuit unit; 21, magnetic conducting frame; 211, mounting groove; 212, magnetic gap; 213, opening; 22, magnet; 23, air passage; 30, mounting cavity; 31, gap; 40, unit cell; 41, turbulence passage; 411, turbulence opening; 412, curved section; 42, turbulence surface; 421, first turbulence surface; 422, second turbulence surface; 43, support surface; 50, guide pillar; 51, side wall; 60, housing; 61, first housing wall; 62, second housing wall; 70, yoke; 71, end wall; 72, support wall; 721, ventilation groove; 80, back cavity; 90, foam.

[0027] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] It should be noted that if the embodiments of the present application involve directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, motion condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indication also changes accordingly.

[0030] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0031] As an important sound generating device, the acoustic quality of the loudspeaker is crucial to the performance of the loudspeaker. At present, the diaphragm in the loudspeaker drives air to generate sound, and the generated sound wave is easy to reflect at the internal interface during propagation. The reflected sound wave and the sound wave continuously generated by the diaphragm are superimposed to form a standing wave. This standing wave phenomenon has a significant negative impact on the acoustic performance of the loudspeaker. The most prominent defect is that it can seriously destroy the flatness of the frequency response of the loudspeaker, and produce sharp peaks or valleys at some frequency points of the BL frequency response curve, resulting in serious distortion of the sound. It is a key technical problem that has existed for a long time and needs to be solved in the design of the entire loudspeaker.

[0032] To solve the above problems, the present application provides a sound generating monomer and an electronic device.

[0033] In an embodiment, as shown in Figures 1 to 3 The sound generating monomer 100 includes a vibration unit 10, a magnetic circuit unit 20 and a unit cell 40. The vibration unit 10 includes a diaphragm 11 and a voice coil 12, and the diaphragm 11 and the voice coil 12 vibrate along a first direction. The magnetic circuit unit 20 is located on one side of the diaphragm 11 along the first direction, and surrounds the voice coil 12 and the diaphragm 11 to form a mounting cavity 30. The unit cell 40 is arranged in the mounting cavity 30, and the unit cell 40 is supported on the magnetic circuit unit 20 and forms a gap 31 with the diaphragm 11. The unit cell 40 has a plurality of turbulence channels 41 penetrating the unit cell 40. The extension paths of the plurality of turbulence channels 41 are different from the path extending along the first direction, and the extension paths of the plurality of turbulence channels 41 are at least partially different. Any two turbulence channels 41 are arranged in communication or isolation with each other.

[0034] The sound emitting monomer 100 can be a loudspeaker monomer, and the sound emitting monomer 100 can be applied to a sound emitting module of an electronic device, and the electronic device can be a car and a sound system and the like. The embodiment takes the sound emitting monomer 100 as a loudspeaker monomer as an example for description.

[0035] The first direction is Figure 3 The magnetic circuit unit 20 is located below the diaphragm 11, and the magnetic circuit unit 20 forms a magnetic gap 212, the top of the voice coil 12 is connected with the diaphragm 11, and the bottom of the voice coil 12 extends into the magnetic gap 212. The magnetic circuit unit 20 generates uniform magnetic flux and magnetic lines of force in the magnetic gap 212, provides a uniform magnetic field for the voice coil 12 to reciprocate up and down in the magnetic gap 212 when energized, and the voice coil 12 moves reciprocally to cut the magnetic lines of force, drives the diaphragm 11 to vibrate up and down, thereby driving the air to emit sound, and completes the energy conversion between electricity and sound.

[0036] The diaphragm 11, the voice coil 12 and the magnetic circuit unit 20 surround the mounting cavity 30, and the unit cell 40 is arranged in the mounting cavity 30, so as to use the mounting cavity 30 surrounded by the diaphragm 11, the voice coil 12 and the magnetic circuit unit to accommodate the unit cell 40, without occupying the space of the sound emitting monomer 100, and the structure is compact, which is beneficial to the miniaturization design of the sound emitting monomer 100. Specifically, the voice coil 12 is a ring-shaped voice coil 12 and surrounds the outer periphery of the unit cell 40, and the unit cell 40 is located between the diaphragm 11 and the magnetic circuit unit 20 and is supported on the magnetic circuit unit 20, so as to realize the assembly between the magnetic circuit unit 20. Moreover, a gap 31 is formed between the unit cell 40 and the diaphragm 11, so as to provide sufficient vibration space for the up-and-down vibration of the diaphragm 11, and avoid the interference of the unit cell 40 to the vibration of the diaphragm 11, and the design is reasonable.

[0037] The unit cell 40 has a plurality of turbulence channels 41 penetrating therethrough, and the extension paths of all the turbulence channels 41 are different from the path extending along the first direction. It can be understood that the path extending along the first direction is a vertical path extending along the up-and-down direction, which is a straight path, and the extension paths of all the turbulence channels 41 are different from the vertical path, that is, each turbulence channel 41 is not a vertical channel, but can be a wave-shaped curved channel, an inclined channel and the like. It should be noted that even if the turbulence channel 41 is a wave-shaped curved channel extending along the vertical direction, it should not be considered as a vertical channel, that is, the path extending along the first direction.

[0038] When the vibration unit 10 vibrates up and down to drive the air to make sound, the sound waves continuously generated by the vibration unit 10 propagate in the up-down direction and into each turbulence passage 41 of the crystal cell unit 40 in the vertical direction. However, since the extension paths of all the turbulence passages 41 of the crystal cell unit 40 are not vertical paths, the reflected sound waves generated by the inner walls of each turbulence passage 41 are not vertical sound waves, which disturb the sound waves transmitted into the turbulence passages 41. The sound waves continuously generated by the diaphragm 11 and the reflected sound waves do not superimpose on each other, thereby fundamentally suppressing the generation and accumulation of standing waves and eliminating standing waves, as shown in FIG. 6. Figure 14 As shown in FIG. 7, the BL frequency response curve has small fluctuations, reduces distortion, and improves acoustic performance. Moreover, the extension paths of all the turbulence passages 41 are at least partially different, so that at least some of the turbulence passages 41 extend along different paths, further dispersing and consuming the reflected sound waves, improving the sound damping effect, and further improving the reliability of eliminating standing waves, reducing distortion, and effectively improving acoustic performance.

[0039] In addition, in an embodiment, any two turbulence passages 41 of the crystal cell unit 40 can be connected to each other, so that the multiple turbulence passages 41 interfere with each other, increasing the multidirectionality and diversity of the extension paths, and further improving the reliability of eliminating standing waves.

[0040] In another embodiment, any two turbulence passages 41 of the crystal cell unit 40 are arranged to be isolated from each other, to simplify the manufacturing difficulty and facilitate the manufacturing.

[0041] In an embodiment, the crystal cell unit 40 has multiple turbulence surfaces 42, at least one of which is arranged towards the diaphragm 11; each turbulence surface 42 is formed with multiple turbulence openings 411, and any two turbulence openings 411 located on the same or different turbulence surfaces 42 are connected by at least one turbulence passage 41.

[0042] Specifically, the diaphragm 11 is located above the crystal cell unit 40, at least one turbulence surface 42 of the crystal cell unit 40 is arranged towards the diaphragm 11, and the turbulence surface 42 arranged towards the diaphragm 11 is formed with multiple turbulence openings 411 to transmit the sound waves generated by the diaphragm 11 into the turbulence passages 41 connected with the turbulence openings 411. Moreover, each turbulence surface 42 has multiple turbulence openings 411 to allow the sound waves to enter the multiple turbulence passages 41 of the crystal cell unit 40 in multiple directions and angles, thereby eliminating the generation of standing waves. Furthermore, the multiple turbulence passages 41 of the crystal cell unit 40 can be connected to each other to interfere with each other, so that any two turbulence openings 411 are connected by at least one turbulence passage 41. The any two turbulence openings 411 can be any two turbulence openings 411 located on the same turbulence surface 42 or any two turbulence openings 411 located on different turbulence surfaces 42, to increase the multidirectionality and diversity of the extension paths, and further increase the multidirectionality and diversity of the sound wave reflection, thereby further improving the reliability of eliminating standing waves.

[0043] As shown in Figures 3 to 8 , each turbulence passage 41 is arranged in a curved manner and includes at least one curved segment 412; when the turbulence passage 41 includes at least two curved segments 412, the curved direction of at least one curved segment 412 is different from the curved direction of the remaining curved segments 412, or the curved direction of at least one curved segment 412 is the same as the curved direction of the remaining at least one curved segment 412.

[0044] Specifically, in an embodiment, each turbulence passage 41 can be arranged in a curved manner, and it can be understood that the turbulence passage 41 can be any curved passage, such as a wavy passage extending in the transverse and / or vertical and / or longitudinal direction, or other curved passage extending along any path different from the vertical direction.

[0045] Each turbulence passage 41 includes at least one curved segment 412 to propagate and reflect sound waves in different directions to eliminate standing waves. In some embodiments, when the turbulence passage 41 includes at least two curved segments 412, the curved direction of at least one curved segment 412 is different from the curved direction of the remaining curved segments 412, such as the turbulence passage 41 shown in Figure 4 , Figure 6 and Figure 7 , in which part of the curved segments 412 of the turbulence passage 41 are curved upward, and part of the curved segments 412 are curved downward. In other embodiments, the curved direction of at least one curved segment 412 is the same as the curved direction of the remaining at least one curved segment 412, such as when the two turbulence ports 411 of the turbulence passage 41 are located on the same turbulence surface 42, and the turbulence passage 41 extends from one of the turbulence ports 411 to the other turbulence port 411 along the circumferential direction of the cell unit 40, at this time, the curved segments 412 of the turbulence passage 41 all extend along the circumferential direction of the cell unit 40, and the curved directions are the same. The turbulence passage 41 of the present application can be flexibly arranged according to actual use requirements, and the arrangement mode is flexible and various to adapt to different application scenarios.

[0046] In the sound generating monomer 100 of the present application, the shape of the turbulence surface 42 arranged towards the diaphragm 11 matches the shape of the diaphragm 11, and a uniform gap 31 is formed between them.

[0047] In an embodiment, as shown in Figures 2 to 8 , the middle part of the diaphragm 11 forms a spherical top 111, at this time, the turbulence surface 42 of the cell unit 40 towards the diaphragm 11 can be a hemispherical surface to match the shape of the spherical top 111 and maintain a uniform gap 31 between them, avoiding the interference of the cell unit 40 with the vibration of the planar diaphragm 11.

[0048] It should be noted that in some embodiments, the diaphragm 11 can be a planar diaphragm 11, at this time, the turbulence surface 42 arranged on the unit cell 40 towards the diaphragm 11 can be a plane to match the shape of the planar diaphragm 11 and keep a uniform gap 31 between them at all times, avoiding the unit cell 40 interfering with the vibration of the planar diaphragm 11.

[0049] In an embodiment, the distance between the turbulence surface 42 arranged towards the diaphragm 11 and the diaphragm 11 is B, wherein 0.5mm≤B≤1.5mm. It can be understood that the distance between the turbulence surface 42 arranged towards the diaphragm 11 and the diaphragm 11 is the interval size between them, and the distance can reflect the size of the gap 31. The distance between the turbulence surface 42 towards the diaphragm 11 and the diaphragm 11 is B, and 0.5mm≤B≤1.5mm, so that the distance between the turbulence surface 42 and the diaphragm 11 is kept within a reasonable range, that is, the turbulence surface 42 does not interfere with the vibration of the diaphragm 11 because the distance is too small, and the turbulence surface 42 is too far away from the diaphragm 11 because the distance is too large, avoiding wasting the space of the mounting cavity 30, and also avoiding the situation that the sound waves generated from the diaphragm 11 cannot reach and transmit into the turbulence passage 41 of the unit cell 40 in time, ensuring the reliability of eliminating standing waves.

[0050] In an embodiment, at least one turbulence surface 42 is supported on the magnetic circuit unit 20 to realize the assembly between the unit cell 40 and the magnetic circuit unit 20. The turbulence surface 42 arranged towards the diaphragm 11 is the first turbulence surface 42, and the turbulence surface 42 supported on the magnetic circuit unit 20 is the second turbulence surface 42; at least part of the turbulence passage 41 penetrates from the first turbulence surface 42 to the second turbulence surface 42.

[0051] As shown in Figures 2 to 7 , the first turbulence surface 42 is arranged towards the diaphragm 11, which can be the upper surface of the unit cell 40, and the second turbulence surface 42 is supported on the magnetic circuit unit 20, which can be the lower surface of the unit cell 40. At least part of the turbulence passage 41 penetrates from the first turbulence surface 42 to the second turbulence surface 42, that is, at least part of the turbulence passage 41 penetrates from the upper surface to the lower surface of the unit cell 40. It can be understood that this part of the turbulence passage 41 is not a vertical passage, but only a non-vertical passage penetrating the upper and lower surfaces of the unit cell 40, so as to facilitate the sound waves generated by the diaphragm 11 to enter the turbulence passage 41 and propagate along the most convenient path.

[0052] As shown in Figures 2 to 8As shown, in an embodiment, the diaphragm 11 has a spherical top 111, and at least a portion of the unit cell 40 is a hemispherical structure corresponding to the spherical top 111. The spherical top 111 uses its dome-shaped structure to significantly improve the rigidity and strength of the diaphragm 11, effectively suppresses the segmented vibration and reduces distortion, and at the same time improves the diffusion characteristics of sound waves, so that the loudspeaker has better frequency response flatness and wider directivity. At least a portion of the unit cell 40 is a hemispherical structure corresponding to the spherical top 111 to adapt to the shape of the spherical top 111 and maintain a uniform gap 31 between the spherical top 111.

[0053] As shown in the sound generating monomer 100 of the present application, Figures 9 to 13 The unit cell 40 is a three-dimensional periodic hole network structure to form a plurality of turbulence ports 411 and a plurality of turbulence channels 41. The three-dimensional periodic hole network structure can produce a band gap effect for sound waves of a specific frequency band through its ordered topological design, thereby effectively suppressing the formation of standing waves in the frequency band. Unlike the broadband sound absorption of traditional random hole structures, this structure can achieve precise frequency band attenuation and effectively avoid the beneficial dissipation of sound pressure in the effective frequency band of the loudspeaker. At the same time, its periodic spatial distribution can break the symmetry of the sound field in the loudspeaker and disturb the coherence conditions required for the formation of regular standing waves, thereby weakening the basis for the generation of standing waves.

[0054] In an embodiment, the unit cell 40 is an integrally formed engineering plastic piece or an aluminum piece or a red copper piece. The integrally formed unit cell 40 is easy to manufacture and eliminates assembly steps and assembly errors. The unit cell 40 can be optionally made of engineering plastic, aluminum or red copper material, which are all non-magnetic materials to avoid interference with the magnetic field. When the unit cell 40 is an engineering plastic piece, it has the advantages of light weight, low cost and easy to manufacture. When the unit cell 40 is an aluminum piece or a red copper piece, it can become a good heat conductor to help the heat generated by the voice coil 12 to be effectively conducted to the magnetic circuit unit 20 and dissipated.

[0055] In an embodiment, the cross-sectional area of each turbulence channel 41 is S, wherein, The size is reasonably designed to ensure that sound waves can be fully transmitted into the turbulence channel 41 for multiple reflections and scattering, achieving efficient absorption of standing waves and avoiding insufficient sound absorption due to too large size of the turbulence channel 41 or sound wave reflection due to too small size of the turbulence channel 41, thereby improving the flatness of the BL frequency response curve of the loudspeaker and reducing distortion.

[0056] In one embodiment, the porosity of the unit cell 40 is between 35% and 75%, meaning that the volume occupied by the turbulence channel 41 is 35% to 75% of the total volume of the unit cell 40. This design is reasonable, and this porosity range can achieve a balance between acoustic performance and structural rigidity. The higher porosity provides ample incident paths for sound waves, ensuring a wide-bandgap sound absorption effect, while the retained solid material of the unit cell 40 maintains the overall mechanical strength of the structure, preventing it from vibrating or deforming under sound pressure, thereby ensuring the long-term stability of acoustic performance.

[0057] In a preferred embodiment, the porosity of the unit cell 40 is around 45% to achieve the best balance between acoustic performance and structural rigidity.

[0058] In one embodiment, the wall thickness of the turbulence channel 41 is 0.6 mm to 1.5 mm, a reasonable size design that provides the necessary mechanical strength and acoustic performance guarantee for the unit cell 40 structure. This wall thickness range ensures that the solid material between the turbulence channels 41 has sufficient structural rigidity, effectively suppressing its own micro-vibrations under sound pressure and avoiding the generation of additional parasitic noise. At the same time, this moderate wall thickness allows the sound waves to fully interact with the solid material, optimizing the attenuation effect of standing waves while maintaining structural integrity.

[0059] In a preferred embodiment, the wall thickness of the turbulence channel 41 is 0.95 mm to achieve an optimal balance between mechanical strength and acoustic performance.

[0060] In one embodiment, such as Figures 3 to 7 As shown, the magnetic circuit unit 20 has a ventilation channel 23 formed at the position corresponding to the unit cell 40, and at least a portion of the turbulence channel 41 is connected to the ventilation channel 23. Understandably, the second turbulence surface 42 is supported on the magnetic circuit unit 20 and can be the lower surface of the unit cell 40. The second turbulence surface 42 has a plurality of turbulence ports 411 corresponding to the ventilation channels 23, so that at least a portion of the turbulence channel 41 connected to the turbulence port 411 is connected to the ventilation channel 23, allowing airflow in the portion of the turbulence channel 41 to enter the ventilation channel 23 through the corresponding turbulence port 411, thereby eliminating pressure changes in the at least a portion of the turbulence channel 41 connected to the ventilation channel 23.

[0061] In another embodiment, such as Figure 8 As shown, the magnetic circuit unit 20 does not have a ventilation channel 23. The second turbulence surface 42 of the unit cell 40 can be laid flat on the magnetic circuit unit 20 to increase the contact area between the unit cell 40 and the magnetic circuit unit 20 and improve the support stability of the unit cell 40.

[0062] The crystal cell unit 40 can be applied to the sound production unit 100 with the air passage 23 of the magnetic circuit unit 20 or without the air passage 23 of the magnetic circuit unit 20, has a wide application range and high applicability. The design of the crystal cell unit 40 provided with the guide column 50 can be for the case with the air passage 23 of the magnetic circuit unit 20. The design of the crystal cell unit 40 without the guide column 50 can be for the case with the air passage 23 of the magnetic circuit unit 20 or without the air passage 23 of the magnetic circuit unit 20.

[0063] In some embodiments, one side of the crystal cell unit 40 towards the magnetic circuit unit 20 forms a support surface 43 which is supported on the magnetic circuit unit 20 and is bonded or clamped with the magnetic circuit unit 20.

[0064] As shown in Figs. 1 and 2, the lower side of the crystal cell unit 40 forms a support surface 43 which is supported on the magnetic circuit unit 20. Understandably, the support surface 43 can be formed integrally or partially as the second turbulence surface 42. The support surface 43 is bonded or clamped with the magnetic circuit unit 20, facilitating the disassembly and assembly of the crystal cell unit 40 and the magnetic circuit unit 20. Figure 4 and Figure 8 As shown in Figs. 1 and 2, the lower side of the crystal cell unit 40 forms a support surface 43 which is supported on the magnetic circuit unit 20. Understandably, the support surface 43 can be formed integrally or partially as the second turbulence surface 42. The support surface 43 is bonded or clamped with the magnetic circuit unit 20, facilitating the disassembly and assembly of the crystal cell unit 40 and the magnetic circuit unit 20.

[0065] It should be noted that when the magnetic circuit unit 20 has the air passage 23, the part of the support surface 43 corresponding to the air passage 23 can be the second turbulence surface 42, and the part of the support surface 43 avoiding the air passage 23 can be bonded or clamped with the magnetic circuit unit 20. The bonding or clamping area avoids the area of the turbulence port 411 on the second turbulence surface 42 and does not interfere with the turbulence port 411, to ensure the reliability of eliminating the standing wave. Even if the magnetic circuit unit 20 does not have the air passage 23, the support surface 43 is laid on the magnetic circuit unit 20 and is bonded with the magnetic circuit unit 20 overall. The turbulence port 411 on the second turbulence surface 42 contacts the magnetic circuit unit 20, but there are still many turbulence ports 411 on the other turbulence surfaces 42, which will not affect the effect of eliminating the standing wave.

[0066] In an embodiment, the crystal cell unit 40 is provided with a guide column 50 corresponding to the air passage 23. The guide column 50 is connected to the support surface 43 and extends into the air passage 23 along the first direction. Figures 3 to 7 As shown in Fig. 3, the guide column 50 is connected to the support surface 43 and extends downward into the air passage 23. The guide column 50 can play a guiding role, facilitating the assembly of the crystal cell unit 40 and the magnetic circuit unit 20.

[0067] In an embodiment, the guide column 50 is integrally provided with the crystal cell unit 40, facilitating the manufacturing, omitting the assembly steps and assembly errors. In other embodiments, the guide column 50 is separately provided with the crystal cell unit 40, having high flexibility and facilitating the disassembly and maintenance.

[0068] In an embodiment, the guide column 50 matches and abuts with the inner wall of the air passage 23 to limit the insertion into the air passage 23. Through the matching design of the guide column 50 and the air passage 23, the guide column 50 and the air passage 23 are inserted and matched, the guide column 50 is limited in the air passage 23, and the stability of the assembly of the cell unit 40 and the guide column 50 and the magnetic circuit unit 20 is improved.

[0069] In another embodiment, there is a gap between the guide column 50 and the inner wall of the air passage 23. It can be understood that the guide column 50 can be flexibly set according to actual needs. As shown in Figure 3 and Figure 7 , the guide column 50 can be designed to match the air passage 23 for insertion and matching, or the guide column 50 can be designed to have a gap between the inside of the air passage 23 when extending into the air passage 23, so as to more conveniently extend into the air passage 23, and the gap can be communicated with the turbulence port 411 of the second turbulence surface 42, facilitating air flow transmission.

[0070] In an embodiment, as shown in Figure 3 , Figure 5 , Figure 11 and Figure 12 , the guide column 50 is a solid column, and the guide column 50 is also provided with at least one turbulence passage 41 penetrating therethrough. While the guide column 50 is a solid column, at least one turbulence passage 41 penetrating the guide column 50 is provided, so as to ensure that the structural strength of the guide column 50 is sufficient while playing a role in eliminating standing waves.

[0071] In other embodiments, the guide column 50 is a solid column, and the guide column 50 is a non-porous column. The guide column 50 is solidly provided and has no opening, which can ensure that the structural strength of the guide column 50 is sufficient, and the stability of the assembly of the cell unit 40 and the guide column 50 and the magnetic circuit unit 20 is improved.

[0072] In yet another embodiment, as shown in Figure 7 and Figure 9 , the guide column 50 is hollowly provided to communicate at least part of the turbulence passage 41 with the air passage 23, and the side wall 51 of the guide column 50 is a non-porous wall. At least part of the turbulence passage 41 of the cell unit 40 is communicated with the air passage 23 of the magnetic circuit unit 20 through the hollow cavity of the guide column 50, so as to eliminate the air pressure change in at least part of the turbulence passage 41 communicated with the air passage 23. Moreover, the side wall 51 of the guide column 50 is a non-porous wall, which can ensure that the strength of the guide column 50 is sufficient.

[0073] In some embodiments, as shown in Figure 10As shown, the guide column 50 is hollow to communicate the at least partial turbulence passage 41 with the air passage 23, and the side wall 51 of the guide column 50 is also provided with at least one turbulence passage 41 penetrating the side wall 51. The at least partial turbulence passage 41 of the cell unit 40 is communicated with the air passage 23 of the magnetic circuit unit 20 through the hollow cavity of the guide column 50, so as to eliminate the air pressure variation in the at least partial turbulence passage 41 communicated with the air passage 23. Moreover, the side wall 51 of the guide column 50 is also provided with at least one turbulence passage 41 penetrating the side wall 51, to increase the reliability of eliminating the standing wave.

[0074] In an embodiment, as shown in Figures 1 to 3 The sound emitting monomer 100 further comprises a shell 60 and a frame 70, the frame 70, the vibration unit 10 and the magnetic circuit unit 20 are all located in the shell 60, and the structure is compact. The frame 70 surrounds the magnetic circuit unit 20, and the outer edge of the diaphragm 11 is mounted between the shell 60 and the frame 70, so as to realize the installation of the diaphragm 11. The shell 60 and the frame 70 surround a back cavity 80, the frame 70 is provided with an air passage, and the shell 60 is provided with a gas vent hole communicated with the back cavity 80.

[0075] The frame 70 is communicated with the back cavity 80 through the air passage, so that the back cavity 80 is communicated with the space in the frame 70, the volume of the back cavity 80 is expanded, and specifically can be increased by 15%~20%, to improve the low frequency response effect. It can be understood that, in the case that the magnetic circuit unit 20 has the air passage 23, the design of the air passage 23 can also increase the volume of the back cavity 80, to further improve the low frequency response effect. Moreover, the design of the air passage can realize air convection, to improve the heat dissipation effect, the temperature can be reduced by 15℃~20℃ under the rated power, and then the magnetic liquid is omitted, to reduce the cost. The gas vent hole is provided at the bottom of the shell 60, and the gas vent hole is communicated with the back cavity 80. When the magnetic circuit unit 20 has the air passage 23, the air passage 23 can be part of the back cavity 80, and is also communicated with the gas vent hole. The gas vent hole can balance the air pressure between the back cavity 80 and the outside, effectively reduce the nonlinear distortion at large amplitude, expand the low frequency response, and improve the acoustic performance of the sound emitting monomer 100.

[0076] In an embodiment, the shell 60 has a first shell wall 61 and a second shell wall 62 oppositely arranged along a first direction, and the frame 70 comprises an end wall 71 and a support wall 72; the end wall 71 is mounted to the first shell wall 61, and the outer edge of the diaphragm 11 is mounted between the end wall 71 and the first shell wall 61; the support wall 72 is arranged along the first direction and is mounted between the end wall 71 and the second shell wall 62, and the second shell wall 62 is provided with a gas vent hole; the support wall 72 is provided with an air passage, and the air passage extends from a position close to the end wall 71 along the first direction towards the second shell wall 62 and penetrates the support wall 72.

[0077] As shown in Figure 3As shown, the first shell wall 61 and the second shell wall 62 of the shell 60 are arranged oppositely in the up-down direction, the end wall 71 of the yoke 70 is mounted on the first shell wall 61, and the outer edge of the diaphragm 11 is mounted between the end wall 71 and the first shell wall 61, so as to realize the assembly of the shell 60, the diaphragm 11 and the yoke 70. The support wall 72 is arranged vertically and mounted between the end wall 71 and the second shell wall 62. The second shell wall 62 is provided with a pressure relief hole, and the design is reasonable. Moreover, the support wall 72 is provided with an air passing groove, which extends downward from the position close to the end wall 71, i.e. the position close to the top, and penetrates through the support wall 72, so as to increase the area of the air passing groove and improve the heat dissipation effect.

[0078] In an embodiment, the side of the magnetic circuit unit 20 away from the spherical top 111 is provided with a foam 90 with micropores between the second shell wall 62. The foam 90 can form significant acoustic resistance to the airflow passing through the pressure relief hole, effectively filter out the high-frequency resonance peak generated by the pressure relief hole, smooth the frequency response curve of the loudspeaker, and reduce airflow noise, so as to improve the purity and listening of the mid-high frequency sound quality.

[0079] In an embodiment, as shown, Figures 3 to 6 The magnetic circuit unit 20 includes a magnetic conducting frame 21 and a magnet 22. The magnetic conducting frame 21 surrounds an installation slot 211, and the magnet 22 is accommodated in the installation slot 211. The magnetic conducting frame 21 is formed with a magnetic gap 212 and an open mouth 213 at both ends in the first direction, i.e. the axial direction, and the installation slot 211 is in communication with the magnetic gap 212 and the open mouth 213. The end of the voice coil 12 away from the diaphragm 11 is located in the magnetic gap 212, and the magnet 22 is located at the open mouth 213. The magnet 22 is magnetized along the radial direction of the sound production unit 100, i.e. the N pole and the S pole of the magnet 22 are arranged along the radial direction of the sound production unit 100. The radial direction of the sound production unit 100 is the left-right direction, and also the horizontal direction or the inner-outer direction. The foam 90 can be provided between the open mouth 213 and the second shell wall 62, and the structure design is reasonable and compact.

[0080] The magnet 22 is magnetized along the radial direction of the sound production unit 100 and conducts magnetism through the magnetic conducting frame 21, so as to generate uniform magnetic flux and magnetic lines of force at the magnetic gap 212, provide a uniform magnetic field for the up-down reciprocating vibration of the voice coil 12 in the magnetic gap 212 when the voice coil 12 is electrified, and further make the magnetic field strength uniform. The voice coil 12 performs reciprocating cutting of the magnetic lines of force, drives the diaphragm 11 to vibrate up and down, and thus drives the air to produce sound, so as to complete the energy conversion between electricity and sound. The magnetic conducting frame 21 is a ring-shaped magnetic conducting frame 21, which is symmetrically arranged along the central axis. The symmetry degree of the magnetic field can be improved by more than 40%, the utilization rate of the magnetic flux reaches 92%, and the total harmonic distortion (THD) can be reduced to below 0.5%.

[0081] Compared with the traditional loudspeaker in the prior art, in the magnetic circuit unit 20 of the sound emitting unit 100, the magnet 22 is magnetized along the radial direction of the sound emitting unit 100, the magnetic force lines of the magnet 22 are arranged along the radial direction of the sound emitting unit 100, and the magnetic conductivity of the magnetic conductive frame 21 can generate uniform magnetic flux and magnetic force lines at the magnetic gap 212, so as to provide a uniform magnetic field for the up-down reciprocating vibration of the voice coil 12 in the magnetic gap 212 when the voice coil 12 is energized, thereby making the magnetic field strength uniform, improving the sound quality, and improving the acoustic performance. Moreover, the bottom end of the magnetic conductive frame 21 is provided with an opening 213, and the magnet 22 is located at the opening 213, so that the axial dimension of the magnet 22 is less constrained and can be adapted to various scene designs, and the application range is wide.

[0082] Compared with the magnet 22 of the magnetic circuit unit 20 of part of the loudspeaker in the prior art, which is arranged around the magnetic gap 212 in the radial direction of the sound emitting unit 100 and is arranged in a segmented manner, and each segment needs to be coaxially arranged with the voice coil 12, in the sound emitting unit 100, the magnetic gap 212 and the magnet 22 are arranged at the top and bottom ends of the magnetic conductive frame 21, the magnet 22 does not need to be arranged around the magnetic gap 212 in the radial direction, and it is not necessary to ensure that the magnet 22 is coaxially arranged with the voice coil 12, thereby simplifying the assembly process of the sound emitting unit 100, appropriately reducing the precision requirement for the parts, and reducing the production cost.

[0083] As shown in Figure 7 , the magnetic circuit unit 20 of the sound emitting unit 100 can also adopt a common magnetic circuit unit 20 with an air passage 23; as shown in Figure 8 , the magnetic circuit unit 20 of the sound emitting unit 100 can also adopt a common magnetic circuit unit 20 without the air passage 23, and the design is flexible and the application range is wide.

[0084] The application also provides an electronic device, which applies the sound emitting unit 100.

[0085] In an embodiment, the electronic device can be a car and a sound system. The specific structure and use mode of the sound emitting unit 100 in the electronic device are referred to the above-mentioned embodiments. Since the electronic device adopts all the technical solutions of the above-mentioned embodiments, at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are obtained, and the details are not repeated here.

[0086] The above is only the preferred embodiment of the application, and does not limit the protection scope of the application. Any equivalent structural transformation made according to the content of the specification and drawings, or direct / indirect application in other related technical fields within the concept of the application is included in the protection scope of the application.

Claims

1. A sound-emitting monomer, characterized in that, The sound-generating unit includes: A vibration unit, comprising a diaphragm and a voice coil, wherein the diaphragm and the voice coil vibrate along a first direction; A magnetic circuit unit is located on one side of the diaphragm along the first direction and forms a mounting cavity with the voice coil and the diaphragm. A unit cell is disposed within the mounting cavity and supported by the magnetic circuit unit, forming a gap with the diaphragm. The unit cell has multiple turbulence channels penetrating the unit cell. The extension paths of the multiple turbulence channels are all different from the paths extending along the first direction, and the extension paths of the multiple turbulence channels are at least partially different. Any two turbulence channels are interconnected or isolated from each other.

2. The sound-generating unit as described in claim 1, characterized in that, The unit cell has multiple turbulence surfaces, wherein at least one of the turbulence surfaces is disposed facing the diaphragm; Each of the aforementioned turbulence surfaces has multiple turbulence openings, and any two turbulence openings located on the same or different turbulence surfaces are connected by at least one of the aforementioned turbulence channels.

3. The sound-generating unit as described in claim 2, characterized in that, Each of the aforementioned turbulence channels is arranged in a curved manner and includes at least one curved section; When the turbulence channel includes at least two of the curved sections, the bending direction of at least one of the curved sections is different from the bending direction of the remaining curved sections, or the bending direction of at least one of the curved sections is the same as the bending direction of the remaining at least one curved section.

4. The sound-generating unit as described in claim 2, characterized in that, The shape of the turbulence surface facing the diaphragm matches the shape of the diaphragm, and a uniform gap is formed between them.

5. The sound-generating unit as described in claim 4, characterized in that, The distance between the turbulence surface facing the diaphragm and the diaphragm is B, where 0.5mm≤B≤1.5mm.

6. The sound-generating unit as described in claim 2, characterized in that, At least one of the turbulence surfaces is supported by the magnetic circuit unit; The turbulence surface facing the diaphragm is the first turbulence surface, and the turbulence surface supported on the magnetic circuit unit is the second turbulence surface; At least a portion of the turbulence channel extends from the first turbulence surface to the second turbulence surface.

7. The sound-generating unit as described in claim 1, characterized in that, The diaphragm has a dome, and at least a portion of the unit cell is a hemispherical structure corresponding to the dome.

8. The sound-generating unit as described in any one of claims 1 to 7, characterized in that, The unit cell is a three-dimensional periodically arranged porous network structure; And / or, the unit cell is an integrally formed engineering plastic part, aluminum part, or copper part; And / or, the cross-sectional area of ​​each of the aforementioned turbulence channels is S, wherein, .

9. The sound-generating unit as described in any one of claims 1 to 7, characterized in that, The magnetic circuit unit has a ventilation channel formed at the position corresponding to the unit cell, and at least part of the turbulence channel is connected to the ventilation channel.

10. The sound-generating unit as described in claim 9, characterized in that, The unit cell forms a support surface on the side facing the magnetic circuit unit, the support surface supports the magnetic circuit unit, and the support surface and the magnetic circuit unit are bonded or snapped together.

11. The sound-generating unit as described in claim 10, characterized in that, The unit cell is provided with a guide post corresponding to the ventilation channel. The guide post is connected to the support surface and extends into the ventilation channel along the first direction.

12. The sound-generating unit as described in claim 11, characterized in that, The guide post and the unit cell are either integrally formed or separately configured. And / or, The guide post matches and abuts against the inner wall of the air passage to limit its insertion into the air passage, or there is a gap between the guide post and the inner wall of the air passage.

13. The sound-generating unit as described in claim 11, characterized in that, The guide post is a solid post; the guide post is a non-perforated post, or the guide post also has at least one flow channel passing through it; Alternatively, the guide post may be hollow to connect at least a portion of the turbulence channel with the ventilation channel; the sidewall of the guide post may be a non-porous wall, or the sidewall of the guide post may also have at least one turbulence channel penetrating through the sidewall.

14. The sound-generating unit as described in any one of claims 1 to 7, characterized in that, The sound-generating unit also includes a housing and a frame. The frame, the vibration unit, and the magnetic circuit unit are all located inside the housing. The frame surrounds the magnetic circuit unit. The outer edge of the diaphragm is installed on the housing and the frame. A rear cavity is formed between the housing and the frame. The frame has a ventilation slot communicating with the rear cavity. The housing has a vent hole communicating with the rear cavity.

15. The sound-generating unit as described in any one of claims 1 to 7, characterized in that, The outer shell has a first shell wall and a second shell wall disposed opposite to each other along a first direction. The frame includes an end wall and a support wall. The end wall is mounted on the first shell wall, and the outer edge of the diaphragm is mounted between the end wall and the first shell wall. The support wall is disposed along the first direction and is mounted between the end wall and the second shell wall. The second shell wall has the vent hole. The support wall has the air passage groove, and the air passage groove extends from a position near the end wall along the first direction toward the second shell wall and penetrates the support wall.

16. The sound-generating unit as described in claim 15, characterized in that, A microporous foam is provided between the side of the magnetic circuit unit facing away from the dome and the second shell wall.

17. An electronic device, characterized in that, The electronic device uses a sound-generating unit as described in any one of claims 1 to 16.

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