Sound production monomer and electronic equipment

Abstract

The utility model discloses a sounding monomer and an electronic device, and relates to the electroacoustic transduction technology field, the sounding monomer comprises a housing, a magnetic circuit system and a vibration system, the housing is provided with a conductive terminal through injection molding, the magnetic circuit system is arranged in the housing, and the magnetic circuit system is provided with a bass magnetic gap and an alto magnetic gap. The vibration system comprises a bass vibration unit, an alto vibration unit and a treble vibration unit, the alto vibration unit and the treble vibration unit are arranged on the same side of the magnetic circuit system, the alto vibration unit is arranged around the treble vibration unit, the bass vibration unit is arranged on the other side of the magnetic circuit system, and the bass vibration unit comprises a bass vibration diaphragm and a bass voice coil. The bass voice coil is located in the bass magnetic gap, the alto vibration unit comprises an alto vibration diaphragm and an alto voice coil, the alto voice coil is located in the alto magnetic gap, and the high-pitch vibration unit is a piezoelectric unit. The objective of the utility model is to provide a full-frequency and miniaturized sounding monomer.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducer, in particular to a sound-generating monomer and an electronic device using the sound-generating monomer. Background Art

[0002] In recent years, convenient electronic devices (such as mobile phones, headphones, and computers) have become part of people's daily lives. With the rapid development of technology, people's demand for the sound quality of electronic devices has become higher and higher, and full-range and miniaturized speakers have become mainstream demands.

[0003] In the related art, the common full-frequency solution is to assemble the woofer and tweeter in one electronic device at the same time. However, due to the limited space of the electronic device, the size of the two units is greatly restricted, which affects the full-frequency effect of the speaker, resulting in lower performance and failure to achieve better sound quality. At the same time, the tweeter is usually responsible for the treble performance, and the woofer usually has to have mid-range performance in addition to bass performance, resulting in the woofer design not being able to give full play to the low-frequency performance of the woofer. Utility Model Content

[0004] The main purpose of the utility model is to provide a sound unit and an electronic device, aiming to provide a full-range and miniaturized sound unit, which integrates the bass, mid-range and tweeter units into one, so as to occupy a smaller space and have higher adaptability to the space of the whole machine. While ensuring the advantages of low-frequency and high-frequency performance, it can also give full play to the mid-frequency performance, achieve full-range and miniaturization, and improve the performance of the speaker.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a sound-generating unit, and the sound-generating unit comprises:

[0006] A housing, wherein the housing is injection-molded with conductive terminals;

[0007] A magnetic circuit system, the magnetic circuit system is arranged in the housing, the magnetic circuit system has a bass magnetic gap and a midrange magnetic gap; and

[0008] A vibration system, the vibration system comprising a bass vibration unit, a midrange vibration unit and a treble vibration unit, the midrange vibration unit and the treble vibration unit are arranged on the same side of the magnetic circuit system, and the midrange vibration unit is arranged around the treble vibration unit, the bass vibration unit is arranged on the other side of the magnetic circuit system, the bass vibration unit comprises a bass diaphragm and a bass voice coil, the bass voice coil is located in the bass magnetic gap, the midrange vibration unit comprises a midrange diaphragm and a midrange voice coil, the midrange voice coil is located in the midrange magnetic gap, and the treble vibration unit is a piezoelectric unit.

[0009] In one embodiment, the magnetic circuit system includes a first magnetic conductive part, a central magnet, a side magnet, a central magnetic conductive part and a side magnetic conductive part, the central magnet and the side magnet are arranged on the first magnetic conductive part, the central magnetic conductive part is arranged on the side of the central magnetic conductive part away from the first magnetic conductive part, the side magnetic conductive part is arranged on the side of the side magnet away from the first magnetic conductive part, the side magnetic conductive part has a side wall, the bass magnetic gap is formed between the side wall and the first magnetic conductive part, and the mid-range magnetic gap is formed between the central magnetic conductive part and the side magnetic conductive part.

[0010] In one embodiment, the bass diaphragm includes a bass inner fold ring, a bass outer fold ring and a bass vibration plate, the bass inner fold ring is connected to the magnetic circuit system, and the bass outer fold ring is connected to the housing.

[0011] In one embodiment, a support block is provided on a side of the magnetic circuit system close to the bass vibration unit, and the bass inner fold ring is fixed to the support block.

[0012] In one embodiment, the support block is made of magnetic material, and the magnetization direction of the support block is opposite to the magnetization direction of the central magnet;

[0013] Alternatively, the support block is made of non-magnetic material.

[0014] In one embodiment, the midrange diaphragm includes a midrange inner fold ring, a midrange outer fold ring and a midrange vibration plate, the midrange inner fold ring is connected to the central magnetic conductive member, and the midrange outer fold ring is connected to the side magnetic conductive member.

[0015] In one embodiment, the side magnetic conductor is provided with an outer bracket, and the mid-range outer folding ring is fixed to the outer bracket;

[0016] The central magnetic conductive component is provided with an inner bracket, and the mid-range inner folding ring is fixed to the inner bracket.

[0017] In one embodiment, the tweeter vibration unit includes a tweeter vibration plate and a piezoelectric ceramic disposed on the tweeter vibration plate, and an edge of the tweeter vibration plate is fixed to the inner bracket.

[0018] In one embodiment, the inner bracket has a base plate and a surrounding plate arranged at the periphery of the base plate, the tweeter vibration plate is connected to the surrounding plate, and a tweeter back cavity is formed between the tweeter vibration unit and the inner bracket.

[0019] In one embodiment, the magnetic circuit system is provided with a through hole, which connects the external space of the sound unit and the mid-range magnetic gap. The through hole includes a first through hole passing through the first magnetic conductive part, a second through hole passing through the center magnet, and a third through hole passing through the center magnetic conductive part. The first through hole, the second through hole and the third through hole are connected.

[0020] In one embodiment, the housing has a bottom plate, an inner plate and an outer plate, the inner plate is connected to the side magnetic conductor, the outer plate is connected to the bass outer folding ring, and the bottom plate is provided with a bass sound outlet hole.

[0021] The utility model also provides an electronic device, which includes the sound-emitting unit mentioned above.

[0022] The sound-emitting monomer of the technical solution of the utility model is achieved by arranging a magnetic circuit system in a shell, and arranging a bass magnetic gap and a midrange magnetic gap in the magnetic circuit system, and arranging the midrange vibration unit and the treble vibration unit of the vibration system on the same side of the magnetic circuit system, and making the midrange vibration unit surround the treble vibration unit, and arranging the bass vibration unit on the other side of the magnetic circuit system, so that the bass voice coil of the bass vibration unit is located in the bass magnetic gap, the midrange voice coil of the midrange vibration unit is located in the midrange magnetic gap, and the treble vibration unit is set as a piezoelectric unit, so that the bass vibration unit and the midrange vibration unit of the vibration system are arranged in a piezoelectric manner. The bass vibration unit, mid-range vibration unit and tweeter vibration unit are integrated into one, and the Z-axis space of the sound unit is integrated through a shared magnetic circuit system to achieve a highly integrated low, medium and high-frequency full-range sound unit, so that the space occupied by the sound unit is smaller and the space adaptability of the whole machine is higher. The bass vibration unit, mid-range vibration unit and tweeter vibration unit of the vibration system are responsible for the sound of their respective frequency bands, and can achieve the best overall sound quality experience according to the overall machine effect. In this way, while ensuring the advantages of low-frequency and high-frequency performance, the mid-frequency performance can be fully utilized to achieve full-frequency and miniaturization, effectively improving the performance of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of an embodiment of a sound-emitting unit provided by the utility model;

[0025] Figure 2 A schematic structural diagram of another perspective of an embodiment of a sound-emitting unit provided by the utility model;

[0026] Figure 3 This is an exploded schematic diagram of an embodiment of a sound-generating unit provided by the utility model;

[0027] Figure 4 A cross-sectional schematic diagram of an embodiment of a sound-emitting unit provided by the utility model;

[0028] Figure 5 A schematic diagram of the structure of an embodiment of a sound-generating unit provided by the utility model without the bass diaphragm;

[0029] Figure 6 A schematic structural diagram of another embodiment of the sound-generating unit provided by the utility model;

[0030] Figure 7 A structural schematic diagram of another embodiment of a sound-emitting unit provided by the utility model from another perspective;

[0031] Figure 8 This is an exploded schematic diagram of another embodiment of the sound-generating unit provided by the utility model;

[0032] Fig. 9 This is a cross-sectional schematic diagram of another embodiment of the sound-emitting unit provided by the utility model.

[0033] Description of Figure Numbers:

[0034] 100, sound unit; 1, shell; 11, bottom plate; 111, bass sound hole; 112, conductive terminal; 12, inner plate; 13, outer plate; 2, magnetic circuit system; 21, first magnetic conductive member; 211, bass magnetic gap; 212, first through hole; 22, center magnet; 221, second through hole; 23, side magnet; 24, center magnetic conductive member; 241, inner bracket; 242, base plate; 243, enclosure; 244, third through hole; 25, side magnetic conductive member; 251, side wall; 252, outer bracket; 253, mid-range magnetic gap; 26, treble magnetic circuit unit; 261, treble magnetic gap; 262, inner magnet; 263, outer magnet; 264, inner magnetic conductive member; 265. External magnetic conductive member; 27. Support block; 271. Fifth through hole; 28. Through hole; 3. Vibration system; 31. Bass vibration unit; 311. Bass diaphragm; 312. Bass inner folding ring; 313. Bass outer folding ring; 314. Bass vibration plate; 315. Bass voice coil; 32. Midrange vibration unit; 321. Midrange diaphragm; 322. Midrange inner folding ring; 323. Midrange outer folding ring; 324. Midrange vibration plate; 325. Midrange voice coil; 33. Treble vibration unit; 331. Treble vibration plate; 332. Piezoelectric ceramics; 333. Treble diaphragm; 334. Treble voice coil; 335. Treble back cavity; 336. Fourth through hole; 4. Breathable isolation member.

[0035] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0039] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] At present, convenient electronic devices (such as mobile phones, headphones, and computers) have penetrated into people's daily lives. With the rapid development of science and technology, people's demand for the sound quality of electronic devices is getting higher and higher, and full-range and miniaturized speakers have become mainstream demands. However, the space available for placing speakers is small, and better sound quality cannot be achieved. If the woofer and tweeter are assembled in one electronic device at the same time, not only will the space of the electronic device be tight, but the full-range effect of the speaker may also be affected.

[0041] The common full-range solution is to assemble the woofer and tweeter in one electronic device at the same time. However, due to the limited space of the electronic device, the size of the two units is greatly restricted, which affects the full-range effect of the speaker, resulting in lower performance and failure to achieve better sound quality. At the same time, the tweeter is usually responsible for the treble performance, and the woofer usually has to have mid-range performance in addition to bass performance, resulting in the woofer design not being able to give full play to the low-frequency performance of the woofer.

[0042] Based on the above ideas and problems, the utility model proposes a highly integrated low, medium and high-frequency full-range integrated sound unit 100. The sound unit 100 not only ensures the advantages of low-frequency and high-frequency performance, but also gives full play to the mid-frequency performance to achieve a true full-range speaker. The integrated design of the low, medium and high frequencies of the sound unit 100 can make full use of the limited overall space and improve the performance of the sound unit 100.

[0043] Please refer to Figures 1 to 9 As shown, in an embodiment of the utility model, the sound unit 100 includes a shell 1, a magnetic circuit system 2 and a vibration system 3, wherein the shell 1 is injection molded with a conductive terminal 112, the magnetic circuit system 2 is arranged in the shell 1, the magnetic circuit system 2 has a bass magnetic gap 211 and a midrange magnetic gap 253, the vibration system 3 includes a bass vibration unit 31, a midrange vibration unit 32 and a treble vibration unit 33, the midrange vibration unit 32 and the treble vibration unit 33 are arranged on the same side of the magnetic circuit system 2, and the midrange vibration unit 32 is arranged around the treble vibration unit 33, the bass vibration unit 31 is arranged on the other side of the magnetic circuit system 2, the bass vibration unit 31 includes a bass diaphragm 311 and a bass voice coil 315, the bass voice coil 315 is located in the bass magnetic gap 211, the midrange vibration unit 32 includes a midrange diaphragm 321 and a midrange voice coil 325, the midrange voice coil 325 is located in the midrange magnetic gap 253, and the treble vibration unit 33 is a piezoelectric unit.

[0044] In this embodiment, the sound-generating unit 100 may be a speaker unit, and the speaker may be a micro speaker. It should be noted that the housing 1 of the sound-generating unit 100 is used to install, fix, support and protect components such as the magnetic circuit system 2 and the vibration system 3, that is, the housing 1 provides an installation base for components such as the magnetic circuit system 2 and the vibration system 3.

[0045] It is understandable that the outer shape of the housing 1 can be circular, oval, square or polygonal, and the specific shape of the housing 1 can be designed according to actual needs, which is not limited here. Of course, the structures of the magnetic circuit system 2 and the vibration system 3 can be set according to the outer shape of the housing 1, which is not limited here.

[0046] It should be noted that the housing 1 has space for accommodating components such as the magnetic circuit system 2 and the vibration system 3. Optionally, the housing 1 is provided with a cavity. It is understandable that the housing 1 can be an integral structure or can be formed by the cooperation of multiple split structures, which is not limited here. The housing 1 in this embodiment can be selected as a circular or square frame or frame structure, that is, the housing 1 has a cavity with openings at both ends, and the magnetic circuit system 2 and the vibration system 3 are accommodated in the cavity of the housing 1, and are arranged relative to each other, so that the magnetic circuit system 2, the housing 1 and the diaphragm assembly 31 of the vibration system 3 enclose to form a vibration cavity.

[0047] It can be understood that the sound-generating unit 100 can be applied to electronic devices, that is, the sound-generating unit 100 can be installed in the electronic device through the housing 1. It should be noted that the housing 1 of the sound-generating unit 100 can be a housing or box structure independent of the electronic device. In this case, the housing 1 is used to integrate the magnetic circuit system 2 and the vibration system 3 of the sound-generating unit 100 into an integral structure, so as to facilitate disassembly and assembly. Of course, the housing 1 of the sound-generating unit 100 can also be an integrally formed structure with the housing or box structure of the electronic device, which can effectively improve the structural strength and sealing performance.

[0048] In order to achieve a full-frequency and miniaturized design of the sound unit 100, in this embodiment, the magnetic circuit system 2 is arranged in the outer shell 1, and the mid-range vibration unit 32 and the tweeter vibration unit 33 of the vibration system 3 are arranged on the same side of the magnetic circuit system 2, and the mid-range vibration unit 32 is arranged around the tweeter vibration unit 33, and the bass vibration unit 31 is arranged on the other side of the magnetic circuit system 2, so that the bass vibration unit 31, the mid-range vibration unit 32 and the tweeter vibration unit 33 of the vibration system 3 are integrated on the opposite sides of the magnetic circuit system 2 at the same time, and integrated into an integrated structure, which not only makes the bass vibration unit 31, the mid-range vibration unit 32 and the tweeter vibration unit 33 of the vibration system 3 independently designed without affecting each other, but also realizes the high integration of the bass vibration unit 31, the mid-range vibration unit 32 and the tweeter vibration unit 33, so that the bass vibration unit 31, the mid-range vibration unit 32 and the tweeter vibration unit 33 occupy a small space, thereby improving the space utilization.

[0049] In this embodiment, the side of the sound unit 100 having the mid-range diaphragm 321 is the front side, and the side having the bass diaphragm 311 is the back side. The mid-range vibration unit 32 and the treble vibration unit 33 are arranged on the same side of the sound unit 100 to ensure the mid- and high-frequency effects of the sound unit 100.

[0050] Optionally, the bass vibration unit 31, the midrange vibration unit 32 and the treble vibration unit 33 of the vibration system 3 are coaxially arranged. It can be understood that by setting the bass vibration unit 31, the midrange vibration unit 32 and the treble vibration unit 33 of the vibration system 3 to a coaxial arrangement structure, the shared magnetic circuit system 2 can be realized to integrate the Z-axis space of the sound-emitting monomer 100, which not only enables the sound-emitting monomer 100 to realize a full-frequency design, but also enables the sound-emitting monomer 100 to occupy a small space and have high applicability of the whole machine, which is very in line with the current development demand for high sound quality of the speaker. Compared with the conventional speaker in which the three devices of the bass speaker + the midrange speaker + the tweeter are mechanically assembled into one, the occupied space is smaller and the space adaptability of the whole machine is higher. At the same time, the three units of the bass vibration unit 31, the midrange vibration unit 32 and the treble vibration unit 33 of the vibration system 3 are highly integrated into one, but the assembly process of each component is still a conventional process flow, the process is simple, the maturity is high, and it has mass production.

[0051] In this embodiment, the housing 1 is provided with a bass sound outlet 111. Optionally, the midrange vibration unit 32, the treble vibration unit 33 and the bass sound outlet 111 are located on the same side of the sound-emitting unit 100, and the sound waves of the bass diaphragm 311 are radiated outward through the bass sound outlet 111. In this way, the bass, midrange and treble of the sound-emitting unit 100 can be emitted from the same side, that is, the bass, midrange and treble of the sound-emitting unit 100 are all emitted from the front of the sound-emitting unit 100.

[0052] It can be understood that the bass vibration unit 31, mid-range vibration unit 32 and treble vibration unit 33 of the sound unit 100 are not only coaxially designed, but also can be independently designed to meet the different needs of bass, mid-range and treble, so that each vibration unit is independent of each other and does not affect each other, ensuring that the bass, mid-range and treble sound in the same direction and on the same axis, the three-band sound connection is more coordinated, and the sound quality is better.

[0053] In this embodiment, the bass vibration unit 31 and the midrange vibration unit 32 of the sound unit 100 may optionally adopt a dynamic speaker design structure, and the tweeter vibration unit 33 may optionally adopt a piezoelectric speaker design structure or a dynamic speaker design structure to meet different overall performance requirements.

[0054] The sound-emitting unit 100 of the utility model is provided by arranging the magnetic circuit system 2 in the housing 1, and setting the bass magnetic gap 211 and the midrange magnetic gap 253 in the magnetic circuit system 2, and the midrange vibration unit 32 and the treble vibration unit 33 of the vibration system 3 are arranged on the same side of the magnetic circuit system 2, and the midrange vibration unit 32 is arranged around the treble vibration unit 33, and the bass vibration unit 31 is arranged on the other side of the magnetic circuit system 2, so that the bass voice coil 315 of the bass vibration unit 31 is located in the bass magnetic gap 211, the midrange voice coil 325 of the midrange vibration unit 32 is located in the midrange magnetic gap 253, and the treble vibration unit 33 is set as a piezoelectric unit, so that the bass vibration unit of the vibration system 3 The element 31, the mid-range vibration unit 32 and the tweeter vibration unit 33 are integrated into one, and the Z-axis space of the sound unit 100 is integrated through the shared magnetic circuit system 2 to realize a highly integrated low, medium and high-frequency full-range sound unit 100, so that the space occupied by the sound unit 100 is smaller, and the space adaptability of the whole machine is higher. The bass vibration unit 31, the mid-range vibration unit 32 and the tweeter vibration unit 33 of the vibration system 3 are respectively responsible for the sound of their respective frequency bands, and can achieve the best overall sound quality experience according to the overall machine effect. In this way, while ensuring the advantages of low-frequency and high-frequency performance, the mid-frequency performance can also be fully utilized to achieve full-frequency and miniaturization, and effectively improve the performance of the sound unit 100.

[0055] In this embodiment, the bass voice coil 315 of the bass vibration unit 31 and the midrange voice coil 325 of the midrange vibration unit 32 are configured to be able to pass electrical signals. The bass voice coil 315 and the midrange voice coil 325 can be cylindrical. Optionally, one end of the bass voice coil 315 is connected to the bass diaphragm 311, and the other end of the bass voice coil 315 is suspended in the bass magnetic gap 211 of the magnetic circuit system 2. One end of the midrange voice coil 325 is connected to the midrange diaphragm 321, and the other end of the midrange voice coil 325 is suspended in the midrange magnetic gap 253 of the magnetic circuit system 2.

[0056] It should be noted that the bass voice coil 315 / midrange voice coil 325 can be a flat voice coil, which is fixed to the side of the bass diaphragm 311 / midrange diaphragm 321 facing the magnetic circuit system 2, and is opposite to and spaced from the bass magnetic gap 211 / midrange magnetic gap 253 of the magnetic circuit system 2, that is, the other end of the bass voice coil 315 / midrange voice coil 325 is located outside the bass magnetic gap 211 / midrange magnetic gap 253, and along the vibration direction of the vibration system 3, the bass voice coil The other end of the bass voice coil 315 / midrange voice coil 325 is arranged opposite to the bass magnetic gap 211 / midrange magnetic gap 253; or, the bass voice coil 315 / midrange voice coil 325 is an annular runway voice coil, at this time, one end of the bass voice coil 315 / midrange voice coil 325 is connected to the bass diaphragm 311 / midrange diaphragm 321, and the other end of the bass voice coil 315 / midrange voice coil 325 is suspended in the bass magnetic gap 211 / midrange magnetic gap 253, which is not limited here.

[0057] In one embodiment, the bass voice coil 315 and the midrange voice coil 325 include a frame and a voice coil wire disposed on the frame. Optionally, the bass voice coil 315 and the midrange voice coil 325 are structures formed by winding the voice coil wire on the frame. In this embodiment, the voice coil wire can be made of a metal material that can pass current. The frame of the bass voice coil 315 and the midrange voice coil 325 can be a circular cylinder, a square cylinder, a racetrack type, or other cylinders, which are not limited here.

[0058] In this embodiment, in order to facilitate the input of electrical signals to the bass voice coil 315 and the midrange voice coil 325, a flexible circuit board may be provided, and the flexible circuit board is used to connect the external circuit to the bass voice coil 315 and the midrange voice coil 325 of the sound unit 100. It can be understood that the flexible circuit board is provided with an inner pad and an outer pad, the inner pad of the flexible circuit board is connected to the bass voice coil 315 / midrange voice coil 325 of the sound unit 100, and the outer pad of the flexible circuit board is used to connect to an external terminal or an external circuit.

[0059] It should be noted that the flexible circuit board can be arranged in the cavity of the shell 1; or, the flexible circuit board can also be arranged outside the cavity of the shell 1, as long as the electrical signal can be transmitted to the bass voice coil 315 and the midrange voice coil 325 through the flexible circuit board, and no limitation is made here.

[0060] Of course, the housing 1 may also be provided with a conductive terminal 112, and the conductive terminal 112 may be connected to the voice coil lead of the bass voice coil 315 / midrange voice coil 325, and then the conductive terminal 112 may be connected to an external terminal or an external circuit using a flexible printed circuit board. Optionally, the housing 1 may be injection molded with the conductive terminal 112, which may simplify the structure of the housing 1 and the processing steps.

[0061] In this embodiment, the tweeter vibration unit 33 may be a piezoelectric unit. Of course, in other embodiments, the tweeter vibration unit 33 includes a tweeter diaphragm 333 and a tweeter voice coil 334, and the magnetic circuit system 2 further has a tweeter magnetic gap 261, one end of the tweeter voice coil 334 is connected to the tweeter diaphragm 333, and the other end of the tweeter voice coil 334 is suspended in the tweeter magnetic gap 261 of the magnetic circuit system 2.

[0062] It can be understood that the tweeter voice coil 334 of the tweeter vibration unit 33 is configured to be able to pass electrical signals. The tweeter voice coil 334 can be cylindrical. The tweeter voice coil 334 includes a skeleton and a voice coil wire arranged on the skeleton. Optionally, the tweeter voice coil 334 is a structure formed by winding the voice coil wire on the skeleton. In the present embodiment, the voice coil wire can be made of a metal material that can pass electric current. The skeleton of the tweeter voice coil 334 can be selected as a circular cylinder, a square cylinder, a runway type, or other shapes of cylinders, which are not limited here.

[0063] It should be noted that in order to facilitate the input of electrical signals to the tweeter voice coil 334, a flexible circuit board can be provided, and the flexible circuit board is used to connect the external circuit to the tweeter voice coil 334 of the sound unit 100. It can be understood that the flexible circuit board is provided with an inner pad and an outer pad, the inner pad of the flexible circuit board is connected to the tweeter voice coil 334 of the sound unit 100, and the outer pad of the flexible circuit board is used to connect to an external terminal or an external circuit.

[0064] It should be noted that the flexible circuit board can be arranged in the cavity of the shell 1; or, the flexible circuit board can also be arranged outside the cavity of the shell 1, as long as the electrical signal can be transmitted to the tweeter voice coil 334 through the flexible circuit board, and no limitation is made here.

[0065] Of course, if Figure 5 As shown, the housing 1 may also be provided with a conductive terminal 112, which is connected to the voice coil lead of the tweeter voice coil 334 by the conductive terminal 112, and then the conductive terminal 112 is connected to an external terminal or an external circuit by a flexible printed circuit board. Optionally, the housing 1 is injection molded with the conductive terminal 112, which can simplify the structure of the housing 1 and the processing steps.

[0066] In one embodiment, the magnetic circuit system 2 includes a first magnetic conductive member 21, a central magnet 22, a side magnet 23, a central magnetic conductive member 24 and a side magnetic conductive member 25. The central magnet 22 and the side magnet 23 are arranged on the first magnetic conductive member 21, the central magnetic conductive member 24 is arranged on the side of the central magnetic conductive member away from the first magnetic conductive member 21, and the side magnetic conductive member 25 is arranged on the side of the side magnet 23 away from the first magnetic conductive member 21. The side magnetic conductive member 25 has a side wall 251, and a bass magnetic gap 211 is formed between the side wall 251 and the first magnetic conductive member 21, and a mid-range magnetic gap 253 is formed between the central magnetic conductive member 24 and the side magnetic conductive member 25.

[0067] In this embodiment, if Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, the first magnetic conductive member 21 of the magnetic circuit system 2 can be selected as a magnetic conductive plate structure, the central magnet 22 and the central magnetic conductive member 24 are stacked to form a central magnetic circuit portion, and the side magnets 23 and the side magnetic conductive members 25 are stacked to form a side magnetic circuit portion. It can be understood that the side magnets 23 and the side magnetic conductive members 25 of the side magnetic circuit portion are located outside the central magnet 22 and the central magnetic conductive member 24 of the central magnetic circuit portion, and are spaced to form a mid-tone magnetic gap 253. Optionally, the central magnet 22 and the side magnet 23 are spaced apart from the first magnetic conductive member 21, and the central magnetic conductive member 24 and the side magnetic conductive member 25 are respectively arranged on the side of the central magnet 22 and the side magnet 23 facing away from the first magnetic conductive member 21. Optionally, the central magnetic conductive member 24 and the side magnetic conductive member 25 can be selected as a magnetic conductive plate structure.

[0068] It should be noted that the central magnetic circuit portion includes one or more central magnets 22 and central magnetic conductive parts 24, and the central magnets 22 and central magnetic conductive parts 24 are stacked. When the central magnets 22 and central magnetic conductive parts 24 are both multiple, the multiple central magnets 22 and the multiple central magnetic conductive parts 24 are alternately stacked, and one central magnet 22 is connected to the first magnetic conductive part 21. When the central magnet 22 and the central magnetic conductive part 24 are each one, the central magnet 22 is sandwiched between the central magnetic conductive part 24 and the first magnetic conductive part 21.

[0069] It is understandable that the center magnet 22 can be selected as a circular or square plate-like structure or a disk-like structure, or the center magnet 22 can be arranged in an annular structure (that is, a through-hole structure is formed in the center of the center magnet 22) or a plurality of strip structures, and a plurality of strip structures are enclosed to form an annular structure, so that a plurality of strip structures are enclosed to form a through-hole structure, which is not limited here.

[0070] Optionally, the shape profile of the central magnetic conductive member 24 is the same as or equivalent to the shape profile of the central magnet 22. For example, the central magnetic conductive member 24 may be a circular or square plate-shaped structure or a disc-shaped structure, or the central magnetic conductive member 24 may be arranged in an annular structure (i.e., a through-hole structure is formed in the center of the central magnetic conductive member 24) or a plurality of strip structures, wherein the plurality of strip structures are enclosed to form an annular structure, and the plurality of strip structures are enclosed to form a through-hole structure, which is not limited here.

[0071] In this embodiment, the side magnetic circuit portion includes one or more side magnets 23 and side magnetic conductive members 25, and the side magnets 23 and the side magnetic conductive members 25 are stacked. When the side magnets 23 and the side magnetic conductive members 25 are both multiple, the multiple side magnets 23 and the multiple side magnetic conductive members 25 are alternately stacked, and one side magnet 23 is connected to the first magnetic conductive member 21. When the side magnets 23 and the side magnetic conductive members 25 are each one, the side magnet 23 is sandwiched between the side magnetic conductive member 25 and the first magnetic conductive member 21.

[0072] In one embodiment, the side magnets 23 and the side magnetic conductive members 25 of the side magnetic circuit portion may be arranged in an annular shape, in which case the annular side magnetic circuit portion is located outside the central magnetic circuit portion and is spaced apart from the central magnetic circuit portion to form a mid-tone magnetic gap 253. Optionally, the side magnets 23 and / or the side magnetic conductive members 25 form a closed integral annular structure.

[0073] Of course, in other embodiments, the side magnets 23 and the side magnetic conductive parts 25 of the side magnetic circuit part include multiple ones, and the multiple side magnetic circuit parts are arranged around the outside of the central magnetic circuit part, and are spaced and enclosed with the central magnetic circuit part to form a mid-tone magnetic gap 253. Optionally, both the side magnets 23 and the side magnetic conductive parts 25 are multiple, and are arranged one by one, and the adjacent side magnets 23 are connected end to end to form a closed annular structure. Alternatively, the side magnets 23 form a closed integral annular structure, the side magnetic conductive parts 25 are multiple, the adjacent side magnetic conductive parts 25 are connected end to end to form a closed annular structure, and are arranged corresponding to the annular side magnets 23; or, the side magnetic conductive parts 25 form a closed integral annular structure, the side magnets 23 are multiple, the adjacent side magnets 23 are connected end to end to form a closed annular structure, and are arranged corresponding to the annular side magnetic conductive parts 25, which is not limited here.

[0074] In this embodiment, if Figure 3 , Figure 4 , Figure 8 and Fig. 9As shown, the side magnetic conductive member 25 has a side wall 251, and a bass magnetic gap 211 is formed between the side wall 251 of the side magnetic conductive member 25 and the first magnetic conductive member 21. It can be understood that the cross-section of the side magnetic conductive member 25 can be optionally L-shaped. The side magnetic conductive member 25 includes a straight portion and a side wall 251 arranged at an angle, the straight portion of the side magnetic conductive member 25 and the side magnet 23 are stacked, and the side wall 251 of the side magnetic conductive member 25 surrounds the outer side of the first magnetic conductive member 21 and is spaced from the first magnetic conductive member 21 to form a bass magnetic gap 211.

[0075] In one embodiment, the magnetic circuit system 2 also includes a tweeter magnetic circuit unit 26 disposed in the central magnetic conductor 24 , the tweeter magnetic circuit unit 26 has a tweeter magnetic gap 261 , the tweeter vibration unit 33 includes a tweeter diaphragm 333 and a tweeter voice coil 334 , and the tweeter voice coil 334 is disposed in the tweeter magnetic gap 261 .

[0076] In this embodiment, if Figures 6 to 9 As shown, the tweeter vibration unit 33 may optionally adopt a dynamic speaker design structure. The tweeter vibration unit 33 includes a tweeter diaphragm 333 and a tweeter voice coil 334. The magnetic circuit system 2 also includes a tweeter magnetic circuit unit 26, which is arranged on the side of the central magnetic conductive member 24 facing away from the first magnetic conductive member 21, and the tweeter magnetic circuit unit 26 is provided with a tweeter magnetic gap 261, one end of the tweeter voice coil 334 is connected to the tweeter diaphragm 333, and the other end of the tweeter voice coil 334 is suspended in the tweeter magnetic gap 261.

[0077] It should be noted that the tweeter voice coil 334 can be a flat voice coil, in which case it is fixed to the side of the tweeter diaphragm 333 facing the tweeter magnetic circuit unit 26, and is opposite to and spaced from the tweeter magnetic gap 261 of the tweeter magnetic circuit unit 26, that is, the other end of the tweeter voice coil 334 is located outside the tweeter magnetic gap 261, and along the vibration direction of the vibration system 3, the other end of the tweeter voice coil 334 is opposite to the tweeter magnetic gap 261; or, the tweeter voice coil 334 is a ring-shaped runway voice coil, in which case one end of the tweeter voice coil 334 is connected to the tweeter diaphragm 333, and the other end of the tweeter voice coil 334 is suspended in the tweeter magnetic gap 261, which is not limited here.

[0078] In one embodiment, the tweeter magnetic circuit unit 26 includes an inner magnet 262, an outer magnet 263, an inner magnetic conductive part 264 provided on the inner magnet 262, and an outer magnetic conductive part 265 provided on the outer magnet 263, a tweeter magnetic gap 261 is formed between the inner magnetic conductive part 264 and the outer magnetic conductive part 265, and the edge of the tweeter diaphragm 333 is connected to the outer magnetic conductive part 265.

[0079] In this embodiment, if Figure 6 , Figure 8 and Fig. 9As shown, the inner magnet 262 and the outer magnet 263 are arranged at intervals on the side of the central magnetic conductive member 24 facing away from the central magnet 22, and the outer magnet 263 is arranged on the outside of the inner magnet 262 and is spaced to form a high-frequency magnetic gap 261. Optionally, the inner magnetic conductive member 264 and the inner magnet 262 are stacked to form a central magnetic portion, and the outer magnetic conductive member 265 and the outer magnet 263 are stacked to form a side magnetic portion.

[0080] It can be understood that the outer magnet 263 and the outer magnetic conductive member 265 of the side magnetic part are located outside the inner magnet 262 and the inner magnetic conductive member 264 of the central magnetic part, and are spaced to form a high-frequency magnetic gap 261. Optionally, the inner magnetic conductive member 264 and the outer magnetic conductive member 265 can be a magnetic conductive plate structure.

[0081] It should be noted that the central magnetic part includes one or more inner magnets 262 and inner magnetic conductive parts 264, and the inner magnets 262 and inner magnetic conductive parts 264 are stacked. When the inner magnets 262 and inner magnetic conductive parts 264 are both multiple, the multiple inner magnets 262 and the multiple inner magnetic conductive parts 264 are alternately stacked, and one inner magnet 262 is connected to the central magnetic conductive part 24. When the inner magnets 262 and the inner magnetic conductive parts 264 are one, the inner magnet 262 is sandwiched between the inner magnetic conductive parts 264 and the central magnetic conductive part 24.

[0082] It can be understood that the inner magnet 262 can be selected as a circular or square plate-like structure or a disk-like structure, or the inner magnet 262 can be arranged in an annular structure (that is, a through-hole structure is formed in the center of the inner magnet 262) or a plurality of strip structures, and a plurality of strip structures are enclosed to form an annular structure, so that a plurality of strip structures are enclosed to form a through-hole structure, which is not limited here.

[0083] Optionally, the shape of the inner magnetic conductive member 264 is the same as or equivalent to the shape of the inner magnet 262. For example, the inner magnetic conductive member 264 may be a circular or square plate-shaped structure or a disc-shaped structure, or the inner magnetic conductive member 264 may be arranged in an annular structure (i.e., a through-hole structure is formed in the center of the inner magnetic conductive member 264) or a plurality of strip structures, wherein the plurality of strip structures are enclosed to form an annular structure, and the plurality of strip structures are enclosed to form a through-hole structure, which is not limited here.

[0084] In this embodiment, the side magnetic part includes one or more external magnets 263 and external magnetic conductive parts 265, and the external magnets 263 and the external magnetic conductive parts 265 are stacked. When the external magnets 263 and the external magnetic conductive parts 265 are both multiple, the multiple external magnets 263 and the multiple external magnetic conductive parts 265 are alternately stacked, and one external magnet 263 is connected to the central magnetic conductive part 24. When the external magnets 263 and the external magnetic conductive parts 265 are each one, the external magnet 263 is sandwiched between the external magnetic conductive parts 265 and the central magnetic conductive part 24.

[0085] In one embodiment, the outer magnet 263 and the outer magnetic conductive member 265 of the side magnetic part can be optionally arranged in an annular shape, in which case the annular side magnetic part is located outside the central magnetic part and is spaced apart from the central magnetic part to form a treble magnetic gap 261. Optionally, the outer magnet 263 and / or the outer magnetic conductive member 265 form a closed integral annular structure.

[0086] Of course, in other embodiments, the outer magnet 263 of the side magnetic part and the outer magnetic conductive part 265 include a plurality of them, and the plurality of side magnetic parts are arranged around the outside of the central magnetic part, and are spaced and enclosed with the central magnetic part to form a high-frequency magnetic gap 261. Optionally, both the outer magnet 263 and the outer magnetic conductive part 265 are multiple, and are arranged one by one, and adjacent outer magnets 263 are connected end to end to form a closed annular structure. Alternatively, the outer magnet 263 forms a closed integral annular structure, the outer magnetic conductive parts 265 are multiple, and adjacent outer magnetic conductive parts 265 are connected end to end to form a closed annular structure, and are arranged corresponding to the annular outer magnet 263; or, the outer magnetic conductive part 265 forms a closed integral annular structure, the outer magnet 263 is multiple, and adjacent outer magnets 263 are connected end to end to form a closed annular structure, and are arranged corresponding to the annular outer magnetic conductive part 265, which is not limited here.

[0087] In this embodiment, if Figure 6 , Figure 8 and Fig. 9 As shown, the edge of the tweeter diaphragm 333 is connected to the outer magnetic conductive member 265. In order to avoid interference between the tweeter diaphragm 333 and the tweeter magnetic circuit unit 26 during vibration, the outer magnetic conductive member 265 is provided with a fixing platform, and the edge of the tweeter diaphragm 333 is connected to the fixing platform of the outer magnetic conductive member 265.

[0088] It is understandable that the fixing platform can optionally extend in a direction away from the external magnet 263 toward the external magnetic conductive member 265, so that the tweeter diaphragm 333 can be supported to a certain height. In this embodiment, the fixing platform and the external magnetic conductive member 265 can be an integrally formed structure or a separate structure, and can be connected as a whole by welding or bonding, etc., which is not limited here.

[0089] In one embodiment, the magnetization direction of one of the inner magnet 262 and the outer magnet 263 is opposite to the magnetization direction of the central magnet 22 , and the magnetization direction of the other of the inner magnet 262 and the outer magnet 263 is the same as the magnetization direction of the central magnet 22 .

[0090] In this embodiment, by setting the magnetizing direction of the inner magnet 262 to be opposite to the magnetizing direction of the outer magnet 263, the magnetic flux of the tweeter magnetic gap 261 is increased, which can increase the driving force of the tweeter voice coil 334 to improve the sound effect of the tweeter.

[0091] It can be understood that in order to further increase the magnetic flux of the treble magnetic gap 261 and the midrange magnetic gap 253, the magnetization direction of the center magnet 22 is opposite to the magnetization direction of one of the inner magnet 262 and the outer magnet 263, and the magnetization directions of the two to the other are the same. For example, when the center magnet 22 and the inner magnet 262 are magnetized upward, the outer magnet 263 is magnetized downward; or, when the center magnet 22 and the outer magnet 263 are magnetized upward, the inner magnet 262 is magnetized downward, which is not limited here.

[0092] In one embodiment, the bass diaphragm 311 includes a bass inner fold ring 312 , a bass outer fold ring 313 and a bass vibration plate 314 . The bass inner fold ring 312 is connected to the magnetic circuit system 2 , and the bass outer fold ring 313 is connected to the housing 1 .

[0093] In this embodiment, if Figures 2 to 4 , Figures 7 to 9 As shown, by setting the bass diaphragm 311 as a double fold ring structure, the bass diaphragm 311 is connected to the magnetic circuit system 2 through the bass inner fold ring 312, and the bass outer fold ring 313 is connected to the housing 1, thereby improving the connection stability of the bass diaphragm 311.

[0094] It can be understood that the bass inner fold 312 and the bass outer fold 313 of the bass diaphragm 311 are connected by a flat plate portion, and the bass vibration plate 314 is located between the bass inner fold 312 and the bass outer fold 313 and connected to the flat plate portion to enhance the structural strength of the bass diaphragm 311. Optionally, the bass diaphragm 311 is an integrally formed structure, that is, the bass inner fold 312, the flat plate portion and the bass outer fold 313 are an integrally formed structure.

[0095] In this embodiment, the bass voice coil 315 is connected to the flat plate portion between the bass inner fold ring 312 and the bass outer fold ring 313, that is, the bass inner fold ring 312 and the bass outer fold ring 313 are located on the inner and outer sides of the bass voice coil 315. It can be understood that the bass inner fold ring 312 and the bass outer fold ring 313 of the bass diaphragm 311 can be a convex hull structure protruding upward or a concave hull structure concave downward, which is not limited here.

[0096] In order to facilitate the connection between the bass diaphragm 311 and the housing 1, the housing 1 is provided with a connection platform, and the outer side of the bass outer fold ring 313 of the bass diaphragm 311 is connected and fixed to the connection platform. It can be understood that the outer side of the bass outer fold ring 313 is formed with an external fixing part, and the bass diaphragm 311 is connected and fixed to the connection platform of the housing 1 through the external fixing part, which is not limited here.

[0097] In one embodiment, a support block 27 is provided on one side of the magnetic circuit system 2 close to the bass vibration unit 31 , and the bass inner fold ring 312 is fixed to the support block 27 .

[0098] In this embodiment, if Figures 3 to 5 , Figure 8 and Fig. 9 As shown, by setting a support block 27 on the side of the magnetic circuit system 2 facing the bass vibration unit 31, the bass diaphragm 311 of the bass vibration unit 31 is further fixed by the support block 27 to further improve the connection stability of the bass diaphragm 311. Optionally, the support block 27 can be a circular or square plate or disc structure.

[0099] It can be understood that the inner side of the bass inner fold ring 312 of the bass diaphragm 311 is connected and fixed to the support block 27. In order to ensure the connection stability between the bass inner fold ring 312 and the support block 27, the inner side of the bass inner fold ring 312 extends to form a flat plate structure, and the bass diaphragm 311 is connected and fixed to the support block 27 using the flat plate structure on the inner side of the bass inner fold ring 312.

[0100] In order to further improve the magnetic performance of the magnetic circuit system 2, in one embodiment, the support block 27 can be made of a magnetic material. Optionally, the support block 27 can be a magnet or a magnetic conductive plate or a plate-shaped or disc-shaped structure made of a magnetic material.

[0101] In this embodiment, the magnetization direction of the support block 27 is opposite to the magnetization direction of the center magnet 22. It can be understood that such a configuration can effectively increase the magnetic conductivity of the first magnetic conductive member 21, thereby increasing the magnetic flux of the bass magnetic gap 211 and the midrange magnetic gap 253, so as to improve the driving force on the bass voice coil 315 and the midrange voice coil 325.

[0102] In another embodiment, the support block 27 may be made of a non-magnetic material. It is understandable that the support block 27 plays a role in supporting and fixing the bass diaphragm 311, which is not limited here.

[0103] In one embodiment, the midrange diaphragm 321 includes a midrange inner fold ring 322 , a midrange outer fold ring 323 and a midrange vibration plate 324 . The midrange inner fold ring 322 is connected to the central magnetic conductive member 24 , and the midrange outer fold ring 323 is connected to the side magnetic conductive member 25 .

[0104] In this embodiment, if Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9 As shown, by setting the midrange diaphragm 321 as a double fold ring structure, the midrange diaphragm 321 is connected to the center magnetic conductive component 24 through the midrange inner fold ring 322, and the midrange outer fold ring 323 is connected to the side magnetic conductive component 25, thereby improving the connection stability of the midrange diaphragm 321.

[0105] It can be understood that the midrange inner fold 322 and the midrange outer fold 323 of the midrange diaphragm 321 are connected by a flat plate portion, and the midrange vibration plate 324 is located between the inner fold 322 and the midrange outer fold 323 and connected to the flat plate portion to enhance the structural strength of the midrange diaphragm 321. Optionally, the midrange diaphragm 321 is an integrally formed structure, that is, the midrange inner fold 322, the flat plate portion and the midrange outer fold 323 are an integrally formed structure.

[0106] In this embodiment, the midrange voice coil 325 is connected to the flat plate portion between the midrange inner fold 322 and the midrange outer fold 323, that is, the midrange inner fold 322 and the midrange outer fold 323 are located at the inner and outer sides of the midrange voice coil 325. It can be understood that the midrange inner fold 322 and the midrange outer fold 323 of the midrange diaphragm 321 can be a convex structure protruding upward or a concave structure concave downward, which is not limited here.

[0107] In order to facilitate the connection between the midrange diaphragm 321 and the side magnetic conductive member 25, the side magnetic conductive member 25 is provided with a connecting platform, and the outer side of the midrange outer folding ring 323 of the midrange diaphragm 321 is connected and fixed to the connecting platform. It can be understood that the outer side of the midrange outer folding ring 323 is formed with an external fixing part, and the midrange diaphragm 321 is connected and fixed to the connecting platform of the side magnetic conductive member 25 through the external fixing part, which is not limited here.

[0108] In one embodiment, the side magnetic conductive member 25 is provided with an outer bracket 252 , and the mid-range outer fold ring 323 is fixed to the outer bracket 252 .

[0109] In this embodiment, if Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9 As shown, by setting an external bracket 252 on the side magnetic conductive member 25, the outer bracket 252 is used to fix the midrange outer fold ring 323 of the midrange diaphragm 321, and the midrange diaphragm 321 is supported to a certain height to avoid interference between the midrange diaphragm 321 and the side magnetic conductive member 25 during vibration. Optionally, the external bracket 252 and the side magnetic conductive member 25 can be an integrally formed structure. Of course, in other embodiments, the external bracket 252 and the side magnetic conductive member 25 can also be set as a split structure, which is connected as a whole by welding or bonding, etc., which is not limited here.

[0110] It can be understood that the inner side of the midrange inner fold ring 322 of the midrange diaphragm 321 is connected and fixed to the central magnetic conductive member 24. In order to ensure the connection stability between the midrange inner fold ring 322 and the central magnetic conductive member 24, the inner side of the midrange inner fold ring 322 extends to form a flat plate structure, and the midrange diaphragm 321 is connected and fixed to the central magnetic conductive member 24 using the flat plate structure on the inner side of the midrange inner fold ring 322.

[0111] In one embodiment, the central magnetic conductive member 24 is provided with an inner bracket 241 , and the midrange inner fold ring 322 is fixed to the inner bracket 241 .

[0112] In this embodiment, if Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9 As shown, by setting an inner bracket 241 in the center magnetic conductive part 24, the inner bracket 241 is used to fix the midrange inner fold ring 322 of the midrange diaphragm 321, and the midrange diaphragm 321 is supported to a certain height to avoid interference between the midrange diaphragm 321 and the center magnetic conductive part 24 during vibration. Optionally, the inner bracket 241 and the side center magnetic conductive part 24 can be an integrally formed structure. Of course, in other embodiments, the inner bracket 241 and the side center magnetic conductive part 24 can also be set as a split structure, connected as a whole by welding or bonding, etc., which is not limited here.

[0113] In one embodiment, the midrange inner fold ring 322 is connected to the tweeter magnetic circuit unit 26. Figure 8 and Fig. 9 As shown, the midrange inner fold ring 322 of the midrange diaphragm 321 is connected to the outer magnet 263 or the outer magnetic conductive member 265, which is not limited here.

[0114] In one embodiment, a cover plate is further provided on the side of the midrange diaphragm 321 facing away from the magnetic circuit system 2, the cover plate is provided on the midrange diaphragm 321 and forms a midrange front cavity with the midrange diaphragm 321, and a midrange sound outlet hole connected to the midrange front cavity is provided on the cover plate. It can be understood that the cover plate and the midrange sound outlet hole are provided so that the sound waves of the midrange diaphragm 321 are radiated more concentratedly, thereby enhancing the midrange effect. Furthermore, the midrange sound outlet hole and the bass sound outlet hole 111 are located on the same side of the outer shell, so that the midrange vibration unit and the bass vibration unit can emit sound on the same side, thereby enhancing the mid-bass sound quality. Specifically, the cover plate is annular, the inner edge of the cover plate is connected to the midrange inner fold ring 322, and the outer edge is connected to the midrange outer fold ring 323. The cover plate is made of metal or the like.

[0115] In one embodiment, the high-frequency vibration unit 33 may be a piezoelectric unit. Figure 1 , Figure 3 and Figure 4 As shown, the tweeter vibration unit 33 includes a tweeter vibration plate 331 and a piezoelectric ceramic 332 disposed on the tweeter vibration plate 331 . The edge of the tweeter vibration plate 331 is fixed to the inner bracket 241 .

[0116] It can be understood that the piezoelectric ceramic 332 of the tweeter vibration unit 33 can be connected to an external circuit through a flexible circuit board or other electrical connectors, so that an electrical signal is passed into the piezoelectric ceramic 332, so that the piezoelectric ceramic 332 can drive the tweeter vibration plate 331 to vibrate. Optionally, the piezoelectric ceramic 332 is arranged in the central area of ​​the tweeter vibration plate 331.

[0117] In this embodiment, the tweeter vibration unit 33 is a piezoelectric unit, and the tweeter magnetic circuit unit 26 may not be provided. Only an inner bracket 241 is provided on the central magnetic conductive member 24 so that the edge of the tweeter vibration plate 331 is fixed to the inner bracket 241 .

[0118] In one embodiment, the inner bracket 241 has a base plate 242 and a surrounding plate 243 disposed on the periphery of the base plate 242 , the tweeter vibration plate 331 is connected to the surrounding plate 243 , and a tweeter rear cavity 335 is formed between the tweeter vibration unit 33 and the inner bracket 241 .

[0119] In this embodiment, the inner bracket 241 is configured as a substrate 242 and a surrounding plate 243 that are arranged at an angle, so that the surrounding plate 243 is arranged at the periphery of the substrate 242 and is surrounded by the substrate 242 to form a groove structure, so that the periphery of the tweeter vibration unit 33 is connected to the surrounding plate 243 to cover the groove structure, that is, a tweeter rear cavity 335 is formed between the tweeter vibration unit 33 and the inner bracket 241. It can be understood that the tweeter rear cavity 335 is a closed rear cavity at this time.

[0120] Of course, the tweeter vibration unit 33 adopts a dynamic speaker design structure, that is, when the tweeter diaphragm 333 and the tweeter voice coil 334 of the tweeter vibration unit 33 cooperate with the tweeter magnetic circuit unit 26, the periphery of the tweeter diaphragm 333 is connected to the outer magnetic conductive member 265, so that the tweeter diaphragm 333 and the tweeter magnetic circuit unit 26 form a tweeter back cavity 335, which is not limited here. It can be understood that in order to balance the air pressure in the tweeter back cavity 335 when the tweeter diaphragm 333 vibrates, the tweeter vibration unit 33 and the tweeter magnetic circuit unit 26 are formed with a leakage hole connected to the tweeter back cavity 335.

[0121] In one embodiment, the magnetic circuit system 2 is provided with a through hole 28, which connects the external space of the sound unit 100 and the mid-range magnetic gap 253. The through hole 28 includes a first through hole 212 passing through the first magnetic conductive member 21, a second through hole 221 passing through the center magnet 22, and a third through hole 244 passing through the center magnetic conductive member 24. The first through hole 212, the second through hole 221 and the third through hole 244 are connected.

[0122] In this embodiment, if Figures 2 to 5 , Figures 7 to 9As shown, by setting a through hole 28 on the magnetic circuit system 2, the through hole 28 connects the external space of the sound unit 100 and the midrange magnetic gap 253, so that the midrange back cavity formed by the midrange vibration unit 32 and the magnetic circuit system 2 is set to an open structure.

[0123] It should be noted that the resonant frequency F0 of the sound-emitting unit 100 is related to the compliance of the diaphragm of the vibration system 3 and the volume of the back cavity of the sound-emitting unit 100. In order to reduce the resonant frequency F0 of the sound-emitting unit 100, the compliance of the diaphragm is usually increased or the volume of the back cavity is increased. That is to say, when the compliance of the diaphragm cannot meet the requirements, the resonant frequency F0 of the sound-emitting unit 100 can be reduced by adjusting the volume of the back cavity (that is, setting the back cavity to an open structure); or, in order to increase the resonant frequency F0 of the sound-emitting unit 100, the back cavity can be set to a closed structure to increase the resonant frequency F0 of the sound-emitting unit 100.

[0124] It can be understood that by setting a through hole 28 in the magnetic circuit system 2, the external space of the sound unit 100 and the midrange magnetic gap 253 are connected through the through hole 28, so that the midrange back cavity is set to an open structure, thereby achieving the adjustment of the midrange performance of the sound unit 100.

[0125] In this embodiment, the through hole 28 includes a first through hole 212, a second through hole 221 and a third through hole 244 that are connected in sequence, that is, the first through hole 212, the second through hole 221 and the third through hole 244 are connected and cooperated to form the through hole 28. The first through hole 212 is a through hole structure that passes through the first magnetic conductive member 21, the second through hole 221 is a through hole structure that passes through the central magnet 22, and the third through hole 244 is a through hole structure that passes through the central magnetic conductive member 24. Optionally, the first through hole 212, the second through hole 221 and the third through hole 244 are coaxially arranged. Optionally, the first through hole 212, the second through hole 221 and the third through hole 244 have similar shapes and contours, and can be polygonal holes or special-shaped holes such as circular holes, elliptical holes, triangular holes, square holes, etc., which are not limited here.

[0126] Optionally, the outer contour of the third through hole 244 is located outside the inner bracket 241. It can be understood that by locating the outer contour of the third through hole 244 outside the inner bracket 241, the through hole 28 can be connected to the external space of the sound unit 100 and the midrange magnetic gap 253, so that the midrange rear cavity is set to an open structure, thereby adjusting the midrange performance of the sound unit 100.

[0127] In one embodiment, the tweeter rear cavity 335 has a fourth through hole 336 connected to the through hole 28. It can be understood that Fig. 9As shown, by providing the fourth through hole 336, the treble rear cavity 335 is connected to the external space of the sound-emitting monomer 100 through the through hole 28, so that the treble rear cavity 335 is set to an open structure, thereby adjusting the treble performance of the sound-emitting monomer 100. Of course, in other embodiments, the treble rear cavity 335 can also be set to a closed structure, such as Figure 4 As shown, no limitation is given here.

[0128] In one embodiment, a support block 27 is provided on one side of the magnetic circuit system 2 close to the bass vibration unit 31 , the bass inner fold ring 312 is fixed to the support block 27 , and the support block 27 has a fifth through hole 271 connected to the through hole 28 .

[0129] In this embodiment, if Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, by setting the fifth through hole 271 on the supporting block 27, the through hole 28 can be conveniently connected with the external space of the sound unit 100 by using the fifth through hole 271, so that the tweeter rear cavity 335 and the midrange rear cavity can be conveniently set as a closed structure or an open structure, thereby ensuring the resonance frequency F0 of the sound unit 100 to improve the performance of the sound unit 100.

[0130] In one embodiment, the through hole 28 is provided with a breathable spacer 4. Figures 2 to 5 , Figures 7 and 8 As shown, by providing a breathable spacer 4, the through hole 28 is covered by the breathable spacer 4 to prevent debris or dust from entering the sound-emitting unit 100 and affecting the sound effect of the sound-emitting unit 100. It can be understood that the breathable spacer 4 can achieve the ventilation function and the isolation function, that is, the breathable spacer 4 does not affect the passage of airflow, but can play a waterproof and dustproof effect. Optionally, the breathable spacer 4 can be an isolation net, a mesh, a metal mesh cover or a damping member, etc., which is not limited here.

[0131] In one embodiment, the housing 1 has a bottom plate 11 , an inner plate 12 and an outer plate 13 , the inner plate 12 is connected to the side magnetic conductor 25 , the outer plate 13 is connected to the bass outer fold ring 313 , and the bottom plate 11 is provided with a bass sound outlet 111 .

[0132] In this embodiment, if Figures 1 to 9 As shown, by configuring the outer shell 1 to include a bottom plate 11, an inner plate 12 and an outer plate 13, the inner plate 12 and the outer plate 13 are arranged on both sides of the bottom plate 11 and are arranged at an angle to the bottom plate 11, so that the bottom plate 11, the inner plate 12 and the outer plate 13 are enclosed to form a concave structure, thereby facilitating the connection between the edge of the bass diaphragm 311 and the outer plate 13 of the outer shell 1, so as to utilize the concave structure to provide avoidance and vibration space for the vibration of the bass diaphragm 311.

[0133] It can be understood that the outer edge of the bass outer folding ring 313 of the bass diaphragm 311 is connected to the outer plate 13 of the outer shell 1. The outer plate 13 may be provided with a connecting platform and other structures to facilitate the connection of the bass outer folding ring 313 with the outer plate 13 through the connecting platform. The inner plate 12 of the outer shell 1 is annular, forming an annular inner cavity, so as to facilitate the installation and fixing of the magnetic circuit system 2 and the mid-range vibration unit 32 and the tweeter vibration unit 33. Optionally, the inner plate 12 of the outer shell 1 is connected to the side magnetic conductor 25 of the magnetic circuit system 2.

[0134] Optionally, the housing 1 is a metal part, so that the magnetic circuit system 2 and the vibration system 3 can be installed and fixed through the housing 1, and heat dissipation can be achieved by using the housing 1. Of course, the housing 1 can also be an injection molded part; or, the housing 1 is integrally injection molded by an injection molded part and a metal part, which is not limited here.

[0135] In this embodiment, a bass sound outlet 111 is provided on the bottom plate 11 of the housing 1, so that the sound of the bass vibration unit 31 can be smoothly conducted through the bass sound outlet 111. Optionally, the mid-range vibration unit 32, the treble vibration unit 33 and the bass sound outlet 111 are located on the same side of the sound unit 100, so that the low, medium and high tones of the sound unit 100 can be emitted on the same side.

[0136] The utility model also provides an electronic device, which includes the above-mentioned sound unit 100. The specific structure of the sound unit 100 refers to the above-mentioned embodiment. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0137] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound-emitting unit, characterized in that: The sound-emitting unit comprises: A housing, wherein the housing is injection-molded with conductive terminals; A magnetic circuit system, the magnetic circuit system is arranged in the housing, the magnetic circuit system has a bass magnetic gap and a midrange magnetic gap; and A vibration system, the vibration system comprising a bass vibration unit, a midrange vibration unit and a treble vibration unit, the midrange vibration unit and the treble vibration unit are arranged on the same side of the magnetic circuit system, and the midrange vibration unit is arranged around the treble vibration unit, the bass vibration unit is arranged on the other side of the magnetic circuit system, the bass vibration unit comprises a bass diaphragm and a bass voice coil, the bass voice coil is located in the bass magnetic gap, the midrange vibration unit comprises a midrange diaphragm and a midrange voice coil, the midrange voice coil is located in the midrange magnetic gap, and the treble vibration unit is a piezoelectric unit.

2. The sound-emitting unit according to claim 1, characterized in that: The magnetic circuit system includes a first magnetic conductive part, a central magnet, a side magnet, a central magnetic conductive part and a side magnetic conductive part. The central magnet and the side magnet are arranged on the first magnetic conductive part, the central magnetic conductive part is arranged on the side of the central magnetic conductive part away from the first magnetic conductive part, the side magnetic conductive part is arranged on the side of the side magnet away from the first magnetic conductive part, the side magnetic conductive part has a side wall, the bass magnetic gap is formed between the side wall and the first magnetic conductive part, and the mid-range magnetic gap is formed between the central magnetic conductive part and the side magnetic conductive part.

3. The sound-emitting unit according to claim 2, characterized in that: The bass diaphragm comprises a bass inner fold ring, a bass outer fold ring and a bass vibration plate, the bass inner fold ring is connected to the magnetic circuit system, and the bass outer fold ring is connected to the shell.

4. The sound-emitting unit according to claim 3, characterized in that: A support block is provided on one side of the magnetic circuit system close to the bass vibration unit, and the bass inner folding ring is fixed to the support block.

5. The sound-emitting unit according to claim 4, characterized in that: The support block is made of magnetic material, and the magnetization direction of the support block is opposite to the magnetization direction of the central magnet; Alternatively, the support block is made of non-magnetic material.

6. The sound-emitting unit according to claim 2, characterized in that: The midrange diaphragm comprises a midrange inner folding ring, a midrange outer folding ring and a midrange vibration plate. The midrange inner folding ring is connected to the central magnetic conductive member, and the midrange outer folding ring is connected to the side magnetic conductive member.

7. The sound-emitting unit according to claim 6, characterized in that: The side magnetic conductor is provided with an outer bracket, and the mid-range outer folding ring is fixed to the outer bracket; The central magnetic conductive component is provided with an inner bracket, and the mid-range inner folding ring is fixed to the inner bracket.

8. The sound-emitting unit according to claim 7, characterized in that: The tweeter vibration unit includes a tweeter vibration plate and a piezoelectric ceramic arranged on the tweeter vibration plate, and an edge of the tweeter vibration plate is fixed to the inner bracket.

9. The sound-emitting unit according to claim 8, characterized in that: The inner bracket comprises a base plate and a surrounding plate arranged at the periphery of the base plate, the tweeter vibration plate is connected to the surrounding plate, and a tweeter rear cavity is formed between the tweeter vibration unit and the inner bracket.

10. The sound-emitting unit according to claim 7, characterized in that: The magnetic circuit system is provided with a through hole, which connects the external space of the sound unit and the mid-range magnetic gap. The through hole includes a first through hole passing through the first magnetic conductive part, a second through hole passing through the center magnet, and a third through hole passing through the center magnetic conductive part. The first through hole, the second through hole and the third through hole are connected.

11. The sound-emitting unit according to claim 3, characterized in that: The housing comprises a bottom plate, an inner plate and an outer plate, wherein the inner plate is connected to the side magnetic conductor, the outer plate is connected to the bass outer folding ring, and the bottom plate is provided with a bass sound outlet hole.

12. An electronic device, characterized in that: The electronic device comprises the sound-emitting unit according to any one of claims 1 to 11.

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