Sound-generating device and electronic equipment

Abstract

The present application discloses a sound-generating device and an electronic device, wherein the sound-generating device includes a shell, a magnetic circuit system, a first vibration system, and a second vibration system, wherein the shell has a receiving cavity; the magnetic circuit system is arranged in the receiving cavity; the first vibration system and the second vibration system are both arranged in the receiving cavity; the magnetic circuit system and the first vibration system and the second vibration system cause the first vibration system and the second vibration system to vibrate through electromagnetic action; the first vibration system includes a first diaphragm and a first voice coil, the first diaphragm has an edge portion and a center portion, the edge portion is connected to the magnetic circuit system, and the first voice coil is connected to the center portion.

Description

Technical Field

[0001] The present application relates to the technical field of electroacoustic transducer devices, and more specifically, to a sound-generating device and an electronic device. Background Art

[0002] Sound generators are important electroacoustic transducers in electronic products, converting current signals into sound signals. With the rapid development of electronic products in recent years, the sound generators used in these products have also been continuously improved.

[0003] For example, in audio equipment, speakers are a common sound-generating device, primarily used to play audio signals. Audio energy, through electromagnetic, piezoelectric, or electrostatic effects, causes the diaphragm to vibrate the surrounding air, producing sound. As audio devices become increasingly popular, people's expectations for the listening experience are also growing.

[0004] Therefore, it is necessary to propose a new technical solution to improve the acoustic performance of the sound-generating device, especially to improve the high-frequency performance of the sound-generating device. Summary of the Invention

[0005] One purpose of this application is to provide a new technical solution for a sound-generating device and an electronic device.

[0006] According to a first aspect of the present application, there is provided a sound-generating device, comprising:

[0007] a housing, wherein the housing has a receiving cavity;

[0008] a magnetic circuit system, the magnetic circuit system being disposed in the receiving cavity;

[0009] a first vibration system and a second vibration system, wherein the first vibration system and the second vibration system are both disposed in the receiving cavity; the magnetic circuit system and the first vibration system and the second vibration system vibrate the first vibration system and the second vibration system through electromagnetic action;

[0010] The first vibration system includes a first diaphragm and a first voice coil. The first diaphragm has an edge portion and a center portion. The edge portion is connected to the magnetic circuit system, and the first voice coil is connected to the center portion.

[0011] Optionally, the first voice coil is wound with metal wire into a spiral disk shape.

[0012] Optionally, the first voice coil is connected to a side of the central portion facing away from the magnetic circuit system.

[0013] Optionally, the central portion is planar, and the first voice coil is fitted and connected to the central portion.

[0014] Optionally, the central portion has a first through hole, the first voice coil has a second through hole, and the first through hole is connected to the second through hole to form a first sound-transmitting hole.

[0015] Optionally, the second vibration system includes a second diaphragm and a second voice coil; the second voice coil is connected to the second diaphragm, and the second voice coil is suspended in the magnetic gap of the magnetic circuit system.

[0016] Optionally, the magnetic circuit system includes a central magnet, side magnets and a basin frame, the central magnet and the side magnets are both connected to the basin frame, and the side magnets are located on the side of the central magnet.

[0017] Optionally, the basin frame includes a first connecting portion, a side wall arranged around the first connecting portion, and a second connecting portion arranged around the side wall; the central magnet is connected to the first connecting portion, and the side magnet is connected to the second connecting portion.

[0018] Optionally, the magnetic circuit system further includes a washer, and the washer is connected to the side magnet.

[0019] Optionally, the second connecting portion is provided with a third through hole, and the third through hole forms a second sound-transmitting hole.

[0020] According to a second aspect of the present application, an electronic device is provided, comprising the sound-generating device as described in the first aspect.

[0021] In the sound-generating device provided in the embodiments of the present application, firstly, the provision of two vibration systems, namely, a first vibration system and a second vibration system, facilitates improving the full-frequency performance of the sound-generating device; that is, the sound-generating device exhibits excellent low-frequency performance, mid-frequency performance, and high-frequency performance. Furthermore, with respect to the first vibration system in the sound-generating device, the first voice coil is connected to the center portion of the first diaphragm, that is, the first voice coil is connected to the central region of the first diaphragm. Therefore, the first voice coil not only serves as a driving source for the vibration of the first diaphragm, but also serves as a reinforcement for the first diaphragm, thereby increasing the rigidity of the first diaphragm. This reduces the vibration mass of the first vibration system, improves the transient properties of the first vibration system, reduces the impact of split vibration, and enhances high-frequency response, thereby enabling the sound-generating device to exhibit excellent high-frequency performance.

[0022] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0024] Figure 1Shown is a schematic structural diagram of a sound-generating device of the present application;

[0025] Figure 2 Shown is a schematic structural diagram of a first voice coil in a sound-generating device of the present application;

[0026] Figure 3 FIG2 is a schematic structural diagram of a first diaphragm in a sound-generating device of the present application;

[0027] Figure 4 Shown is a schematic structural diagram of a basin frame in a sound-generating device of the present application.

[0028] Description of reference numerals:

[0029] 1. Shell; 11. First shell; 12. Second shell; 101. Accommodating chamber; 102. Sound outlet; 103. Sound leakage hole; 2. Magnetic circuit system; 21. Center magnet; 22. Side magnet; 23. Basin; 231. First connecting part; 232. Side wall; 233. Second connecting part; 24. Washer; 201. Second sound-transmitting hole; 202. Third sound-transmitting hole; 3. First vibration system; 301. First sound-transmitting hole; 31. First diaphragm; 311. Edge; 312. Center; 32. First voice coil; 4. Second vibration system; 41. Second diaphragm; 42. Second voice coil. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0034] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] Reference Figure 1-Figure 4As shown, according to an embodiment of the present application, a sound-generating device is provided, which includes a shell 1, a magnetic circuit system 2, a first vibration system 3 and a second vibration system 4, the shell 1 has a receiving cavity 101; the magnetic circuit system 2 is arranged in the receiving cavity 101; the first vibration system 3 and the second vibration system 4 are both arranged in the receiving cavity 101; the magnetic circuit system 2 and the first vibration system 3 and the second vibration system 4 cause the first vibration system 3 and the second vibration system 4 to vibrate through electromagnetic action; the first vibration system 3 includes a first diaphragm 31 and a first voice coil 32, the first diaphragm 31 has an edge portion 311 and a center portion 312, the edge portion 311 is connected to the magnetic circuit system 2, and the first voice coil 32 is connected to the center portion 312.

[0036] In the sound-producing device provided in the embodiment of the present application, an alternating current is passed through the first voice coil 32 of the first vibration system 3 and the second vibration system 4. Under the action of the magnetic field of the magnetic circuit system 2, the first voice coil 32 will drive the first diaphragm 31 to vibrate and produce sound, and the second vibration system 4 will also vibrate and produce sound.

[0037] In the sound-generating device provided in the embodiment of the present application, the provision of two vibration systems, namely, a first vibration system 3 and a second vibration system 4, facilitates improving the full-frequency performance of the sound-generating device; that is, the sound-generating device exhibits excellent low-frequency performance, mid-frequency performance, and high-frequency performance. Furthermore, with respect to the first vibration system 3 in the sound-generating device, the first voice coil 32 is connected to the center portion 312 of the first diaphragm 31, that is, the first voice coil 32 is connected to the central area of ​​the first diaphragm 31. Therefore, the first voice coil 32 not only serves as a driving source for the vibration of the first diaphragm 31, but also serves as a reinforcement for the first diaphragm 31, thereby increasing the rigidity of the first diaphragm 31. This reduces the vibration mass of the first vibration system 3, improves the transient vibration characteristics of the first vibration system 3, reduces the impact of split vibration, and enhances high-frequency response, thereby providing the sound-generating device with excellent high-frequency performance.

[0038] Reference Figure 2 As shown, in one embodiment, the first voice coil 32 is wound with metal wire into a spiral disk shape.

[0039] In this specific example, the first voice coil 32 is wound from a metal wire, for example, copper wire, which achieves high rigidity. Furthermore, the first voice coil 32 is wound from the metal wire into a spiral disk shape, which is thinner and smaller in size, further contributing to high rigidity. Therefore, the first voice coil 32 provides excellent rigid support for the first diaphragm 31, enabling the first vibration system 3 to achieve higher vibration frequencies and better vibration transients, thereby enhancing its high-frequency performance.

[0040] Reference Figure 1As shown, in one embodiment, the first voice coil 32 is connected to a side of the central portion 312 facing away from the magnetic circuit system 2 .

[0041] In this specific example, the first voice coil 32 is disposed in an area outside the magnetic gap of the magnetic circuit system 2, thereby saving space in the magnetic gap and facilitating reduction in the overall size of the sound-generating device.

[0042] Reference Figure 1 、 Figure 3 As shown, in one embodiment, the central portion 312 is planar, and the first voice coil 32 is closely connected to the central portion 312 .

[0043] In this specific example, the first diaphragm 31 is not provided with an arc-shaped spherical top, but its central area, that is, the central portion 312 is set to be flat, so that the central portion 312 can be tightly fitted and connected to the disc-shaped first voice coil 32. As a result, the role of the first voice coil 32 as a reinforcement part of the first diaphragm 31 is more obvious, and the rigidity of the first diaphragm 31 is better improved.

[0044] Reference Figure 1 As shown, in one embodiment, the second vibration system 4 includes a second diaphragm 41 and a second voice coil 42 ; the second voice coil 42 is connected to the second diaphragm 41 , and the second voice coil 42 is suspended in the magnetic gap of the magnetic circuit system 2 .

[0045] In this specific example, an alternating current is supplied to the second voice coil 42 of the second vibration system 4 . Under the action of the magnetic field of the magnetic circuit system 2 , the second voice coil 42 drives the second diaphragm 41 to vibrate and produce sound.

[0046] Reference Figure 1 As shown, in one embodiment, the magnetic circuit system 2 includes a central magnet 21 , side magnets 22 and a basin frame 23 . The central magnet 21 and the side magnets 22 are both connected to the basin frame 23 , and the side magnets 22 are located on the side of the central magnet 21 .

[0047] For example, the central magnet 21 is connected to the center of the frame 23, and the side magnets 22 are connected to the edge of the frame 23. Two side magnets 22 can be provided, one on each side of the central magnet 21. The frame 23 is connected to the central magnet 21 and the side magnets 22 to converge and concentrate the magnetic fields generated by the central magnet 21 and the side magnets 22, thereby correcting and converging the magnetic flux lines emitted by the central magnet 21 and the side magnets 22, thereby increasing the magnetic field strength and reducing magnetic flux leakage.

[0048] Reference Figure 1 、 Figure 4As shown, in one embodiment, the frame 23 includes a first connecting portion 231, a side wall 232 disposed around the first connecting portion 231, and a second connecting portion 233 disposed around the side wall 232. The center magnet 21 is connected to the first connecting portion 231, and the side magnet 22 is connected to the second connecting portion 233. Optionally, the second voice coil 42 is suspended between the side magnet 22 and the side wall 232 of the frame 23.

[0049] In this specific example, the basin frame 23 is shaped similar to a top hat; the structure of the basin frame 23 and the arrangement of the second voice coil 42 are conducive to reducing the volume of the entire sound-generating device, making the structure of the entire sound-generating device more compact.

[0050] Reference Figure 1 As shown, in one embodiment, the magnetic circuit system 2 further includes a washer 24 , and the washer 24 is connected to the side magnet 22 .

[0051] In this specific example, the arrangement of the washer 24 is beneficial to modifying the magnetic field lines, thereby increasing the magnetic field strength and reducing magnetic leakage.

[0052] Reference Figure 1 As shown, in one embodiment, the central portion 312 has a first through hole, the first voice coil 32 has a second through hole, and the first through hole and the second through hole are connected to form a first sound-transmitting hole 301 .

[0053] Reference Figure 1 、 Figure 4 As shown, in one embodiment, the second connection portion 233 of the basin frame 23 is provided with a third through hole, which forms the second sound-transmitting hole 201. Furthermore, the first connection portion 231 of the basin frame 23 is provided with a fourth through hole, which forms the third sound-transmitting hole 202. Furthermore, a sound outlet 102 is provided on the housing 1.

[0054] This sound-generating device can be considered to include a dynamic driver and a high-frequency driver. The dynamic driver includes the second vibration system 4, side magnets 22, a basket 23, and a washer 24; the high-frequency driver includes the first vibration system 3, the center magnet 21, and the basket 23. The dynamic driver is responsible for full-frequency sound generation, while the high-frequency driver primarily produces high-frequency sound. The dynamic driver and high-frequency driver are connected via the first sound-transmitting hole 301, the second sound-transmitting hole 201, and the third sound-transmitting hole 202.

[0055] Optionally, refer to Figure 1 As shown, the housing 1 includes a first housing 11 and a second housing 12 , a sound outlet 102 is provided on the second housing 12 , and a sound leakage hole 103 is provided on the first housing 11 .

[0056] According to another embodiment of the present application, an electronic device is provided, comprising the sound-generating device as described above.

[0057] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A sound-generating device, characterized in that: include: A housing (1), wherein the housing (1) has a receiving cavity (101); A magnetic circuit system (2), the magnetic circuit system (2) being arranged in the receiving cavity (101); A first vibration system (3) and a second vibration system (4), wherein the first vibration system (3) and the second vibration system (4) are both arranged in the receiving cavity (101); the magnetic circuit system (2) and the first vibration system (3) and the second vibration system (4) cause the first vibration system (3) and the second vibration system (4) to vibrate through electromagnetic action; The first vibration system (3) includes a first diaphragm (31) and a first voice coil (32), the first diaphragm (31) having an edge portion (311) and a center portion (312), the edge portion (311) being connected to the magnetic circuit system (2), and the first voice coil (32) being connected to the center portion (312); The second vibration system (4) includes a second diaphragm (41) and a second voice coil (42); the second voice coil (42) is connected to the second diaphragm (41), and the second voice coil (42) is suspended in the magnetic gap of the magnetic circuit system (2); The magnetic circuit system (2) includes a central magnet (21), side magnets (22) and a basin frame (23); the central magnet (21) and the side magnets (22) are both connected to the basin frame (23); the side magnets (22) are located on the side of the central magnet (21); the basin frame (23) includes a first connecting portion (231), a side wall (232) arranged around the first connecting portion (231) and a second connecting portion (233) arranged around the side wall (232); the central magnet (21) is connected to the first connecting portion (231), and the side magnets (22) are connected to the second connecting portion (233); The edge portion (311) is connected to the basin frame (23), and the second voice coil (42) is suspended between the edge magnet (22) and the side wall (232) of the basin frame (23); The central portion (312) has a first through hole, the first voice coil (32) has a second through hole, the first through hole and the second through hole are connected to form a first sound-transmitting hole (301); the second connecting portion (233) has a third through hole, the third through hole forms a second sound-transmitting hole (201); the first connecting portion (231) has a fourth through hole, the fourth through hole forms a third sound-transmitting hole (202).

2. The sound-generating device according to claim 1, wherein: The first voice coil (32) is wound with metal wire into a spiral disk shape.

3. The sound-generating device according to claim 1 or 2, characterized in that: The first voice coil (32) is connected to a side of the central portion (312) facing away from the magnetic circuit system (2).

4. The sound-generating device according to claim 1 or 2, characterized in that: The central portion (312) is planar, and the first voice coil (32) is closely connected to the central portion (312).

5. The sound-generating device according to claim 1, characterized in that: The magnetic circuit system (2) further includes a washer (24), and the washer (24) is connected to the side magnet (22).

6. An electronic device, characterized in that: The electronic device comprises the sound emitting device according to any one of claims 1 to 5.

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