Coaxial dual voice coil loudspeaker, acoustic module and wearable loudspeaker device

Abstract

The application discloses a coaxial double voice coil loudspeaker, an acoustic module and a wearable loudspeaker device. The loudspeaker comprises a spider assembly, a magnetic circuit system, a vibration system and an electrical connection part. The vibration system comprises a first voice coil assembly composed of coaxially arranged first and second voice coils, both of which are partially suspended in the same magnetic gap. The first voice coil assembly is wound in such a way that when the lead wires at the starting ends of the two voice coils are located at the same end of the voice coil assembly body in the axial direction, the spiral winding directions are the same and the extension directions are the same; or when the lead wires at the starting ends of the two voice coils are located at opposite ends of the voice coil assembly body in the axial direction, the spiral winding directions are opposite and the extension directions are opposite. The two voice coils generate driving forces in the same direction in the magnetic field, cooperatively driving the same diaphragm assembly to vibrate, and realizing driving force superposition and acoustic performance improvement in a limited space. The wearable loudspeaker device containing the loudspeaker or the acoustic module can realize excellent audio performance in a limited space.

Description

Technical Field

[0001] This application relates to the field of electroacoustic technology, and in particular to a coaxial dual voice coil loudspeaker, an acoustic module, and a wearable speaker device. Background Technology

[0002] In the field of electroacoustic technology, loudspeakers, as the core acoustic components that convert electrical signals into sound signals, are widely used in wearable speaker devices such as headphones, smart glasses, and AR / VR headsets. Current wearable speaker products are continuously evolving towards miniaturization and portability, leading to a dramatic reduction in the internal acoustic cavity space. Under this constraint, the built-in sound unit must achieve miniaturization while still significantly improving acoustic performance to meet the ever-increasing demand for high-quality audio.

[0003] In existing technologies, to enhance the acoustic performance of wearable speaker devices, a solution of multiple sound-emitting units working in tandem is typically adopted: the overall sound pressure level is increased or the frequency response range is expanded through the superposition effect of the sound signals output by different sound-emitting units. However, this solution has significant drawbacks: each sound-emitting unit needs to be independently laid out and assembled separately, resulting in an excessively large overall space occupied by multiple sound-emitting units, as well as high assembly complexity and increased production costs.

[0004] Therefore, given the limited space constraints of wearable speaker devices, there is an urgent need to develop a new type of speaker solution that is highly integrated, compact, and can significantly improve acoustic performance. This solution should effectively enhance speaker driving force and acoustic performance without increasing the overall speaker size through innovative internal structural design. Utility Model Content

[0005] This application provides a coaxial dual voice coil loudspeaker, an acoustic module, and a wearable speaker device, aiming to solve the technical problem of the mutual constraint between acoustic performance and structural size in miniaturized loudspeakers.

[0006] To achieve the above objectives, in a first aspect, this application provides a coaxial dual voice coil loudspeaker. The loudspeaker includes: a frame assembly, a magnetic circuit system, a vibration system, and an electrical connection portion; the frame assembly is used to fix and support the magnetic circuit system, the vibration system, and the electrical connection portion; the magnetic circuit system includes at least one first magnetic circuit system, the first magnetic circuit system including at least one first magnet assembly, at least one first magnetic guide assembly, and at least one first magnetic gap formed by the cooperation of the first magnet assembly and the first magnetic guide assembly; the vibration system includes a diaphragm assembly and a voice coil assembly, the voice coil assembly having a voice coil assembly body and voice coil assembly leads, the voice coil assembly body being fixedly connected to a corresponding diaphragm assembly; the diaphragm assembly includes at least one first diaphragm assembly; the voice coil assembly includes at least one first voice coil assembly; the electrical connection portion is used to electrically connect at least one voice coil in the voice coil assembly to an external circuit.

[0007] The key improvement of this application lies in the first voice coil assembly. This first voice coil assembly includes a first voice coil and a second voice coil coaxially arranged. The first voice coil includes a first voice coil body and first voice coil leads, with the first voice coil leads including a starting winding lead and a ending winding lead. The second voice coil includes a second voice coil body and second voice coil leads, with the second voice coil leads including a starting winding lead and a ending winding lead. The first and second voice coil bodies together constitute the body of the first voice coil assembly, and the first and second voice coil leads together constitute the leads of the first voice coil assembly. Both the first and second voice coil bodies are at least partially suspended within the same magnetic gap formed by the magnetic circuit system, for receiving force in the magnetic field, thereby driving the diaphragm assembly to vibrate and produce sound.

[0008] The winding method of the first voice coil assembly body satisfies any one of the following two winding methods: (a) the starting end lead of the first voice coil winding and the starting end lead of the second voice coil winding are both set at the same end of the axial direction of the first voice coil assembly body, and the spiral winding direction of the first voice coil body and the second voice coil body are the same, and the spiral extension direction is the same; (b) the starting end lead of the first voice coil winding and the starting end lead of the second voice coil winding are respectively set at opposite ends of the axial direction of the first voice coil assembly body, and the spiral winding direction of the first voice coil body and the second voice coil body are opposite, and the spiral extension direction is opposite.

[0009] The aforementioned first voice coil assembly, through specific winding and matching electrical connections, ensures that when the first and second voice coils are excited by the same input audio signal, they generate electromagnetic driving forces in the same direction within the magnetic field of the magnetic circuit system, causing the diaphragm assembly fixedly connected to it to move synchronously and in the same direction. Simultaneously, the design of coaxial dual voice coils suspended in the same magnetic gap optimizes the space utilization and magnetic energy utilization efficiency of the magnetic circuit system. This solution, while maintaining a compact overall speaker structure, effectively improves the speaker's sound pressure level and electroacoustic conversion efficiency by superimposing the dual driving forces in the same direction onto the jointly fixedly connected diaphragm assembly.

[0010] In some embodiments, the magnetic circuit system further includes a second magnetic circuit system; the second magnetic circuit system is fixedly disposed on the first magnetic circuit system or at least one frame assembly; the second magnetic circuit system includes at least one second magnet assembly, at least one second magnetic conductive assembly, and at least one second magnetic gap formed by the cooperation of the second magnet assembly and the second magnetic conductive assembly.

[0011] In some embodiments, the diaphragm assembly further includes at least one second diaphragm assembly, which is fixedly connected to the corresponding voice coil assembly body.

[0012] In some embodiments, the voice coil assembly further includes at least one second voice coil assembly, the second voice coil assembly including a third voice coil, the third voice coil including a third voice coil body and a third voice coil lead, the third voice coil lead including a third voice coil winding start end lead and a third voice coil winding end lead, the third voice coil body constituting the second voice coil assembly body, and the third voice coil lead constituting the second voice coil assembly lead; the second voice coil assembly body is at least partially suspended in a corresponding magnetic gap formed by the magnetic circuit system, and the second voice coil assembly body is fixedly connected to the diaphragm assembly corresponding to the vibration system.

[0013] In some embodiments, the voice coil assembly further includes at least one voice coil skeleton; at least one voice coil assembly body is wound around the radial outer peripheral surface of the voice coil skeleton.

[0014] In some embodiments, the voice coil assembly body and the corresponding diaphragm assembly are fixedly connected in at least one of the following ways, and a diaphragm assembly is allowed to be connected by at least two voice coil assembly bodies: (a) one axial end of at least one voice coil assembly body is fixedly connected to the corresponding diaphragm assembly; (b) a portion of the radial outer peripheral surface of at least one voice coil assembly body is fixedly connected to the corresponding diaphragm assembly.

[0015] In some embodiments, the vibration system further includes at least one centering support assembly; the centering support assembly is disposed at at least one of the following locations: (a) at least one voice coil assembly is fixedly connected between at least one centering support assembly and a corresponding diaphragm assembly; (b) at least one centering support assembly is fixedly connected between at least one voice coil assembly and a corresponding diaphragm assembly.

[0016] In a second aspect, this application provides an acoustic module. The acoustic module includes at least one speaker as described in the first aspect and at least one acoustic component; the acoustic component is any one or more combinations of the following: (a) an additional sound-emitting unit; (b) a microphone component; (c) a speaker as described in the first aspect.

[0017] Thirdly, this application provides a wearable speaker device. The wearable speaker device includes: a housing, at least one set of audio electrical signal output terminals, and at least one loudspeaker as described in the first aspect or at least one acoustic module as described in the second aspect; the housing has a receiving cavity and a sound outlet channel communicating with the receiving cavity; the loudspeaker or acoustic module is housed within the receiving cavity; the audio electrical signal output terminals are disposed in the internal space of the housing and electrically connected to at least one voice coil in the loudspeaker or acoustic module. Attached Figure Description

[0018] Figure 1 This is a perspective view of a loudspeaker provided in an embodiment of this application.

[0019] Figure 2 for Figure 1 The above is a front view of the speaker.

[0020] Figure 3 for Figure 1 The diagram shown is an exploded view of the speaker.

[0021] Figure 4 for Figure 2 The diagram shows a cross-sectional view of the loudspeaker along section line AA.

[0022] Figure 5 A perspective view of a first voice coil assembly provided in an embodiment of this application.

[0023] Figure 6 From Figure 5 The first voice coil assembly shown is viewed axially along direction B from the starting point of the first voice coil winding.

[0024] Figure 7 A perspective view of a first voice coil assembly provided in another embodiment of this application.

[0025] Figure 8 From Figure 7 The first voice coil assembly shown is viewed axially along the C direction from the starting point of the first voice coil winding.

[0026] Figure 9 From Figure 7 The first voice coil assembly shown is viewed from the axial end along the D direction at the starting point of the second voice coil winding.

[0027] Figure 10 A perspective view of a loudspeaker provided for another embodiment of this application.

[0028] Figure 11 for Figure 10 The above is a front view of the speaker.

[0029] Figure 12 for Figure 10 The diagram shown is an exploded view of the speaker.

[0030] Figure 13 for Figure 11 The diagram shows a cross-sectional view of the loudspeaker along section line EE.

[0031] Figure 14 A perspective view of a loudspeaker provided for another embodiment of this application.

[0032] Figure 15 for Figure 14 The speaker shown is a side view.

[0033] Figure 16 for Figure 15 The diagram shown is an exploded view of the speaker.

[0034] Figure 17 for Figure 15 The diagram shows a cross-sectional view of the loudspeaker along section line FF.

[0035] Figure 18 This is a front view schematic diagram of a speaker provided in another embodiment of this application.

[0036] Figure 19 for Figure 18 The diagram shown is an exploded view of the speaker.

[0037] Figure 20 for Figure 18 The diagram shows a cross-sectional view of the loudspeaker along section line GG.

[0038] Figure 21 This is a front view schematic diagram of a speaker provided in another embodiment of this application.

[0039] Figure 22 for Figure 21 The diagram shown is an exploded view of the speaker.

[0040] Figure 23 for Figure 21 The diagram shows a cross-sectional view of the loudspeaker along section line HH.

[0041] Figure 24 This is a front view schematic diagram of a speaker provided in another embodiment of this application.

[0042] Figure 25 for Figure 24 The diagram shown is an exploded view of the speaker.

[0043] Figure 26 for Figure 24 The speaker shown is a cross-sectional view along section line II.

[0044] Figure 27 This is a side view of a speaker provided in another embodiment of this application.

[0045] Figure 28 for Figure 27 The diagram shown is an exploded view of the speaker.

[0046] Figure 29 for Figure 27 The diagram shows a cross-sectional view of the loudspeaker along section line JJ.

[0047] Figure 30 This is a front view schematic diagram of a speaker provided in another embodiment of this application.

[0048] Figure 31 for Figure 30 The diagram shown is an exploded view of the speaker.

[0049] Figure 32 for Figure 30 The diagram shows a cross-sectional view of the loudspeaker along section line KK.

[0050] Figure 33 This is a side view of a speaker provided in another embodiment of this application.

[0051] Figure 34 for Figure 33 The diagram shown is an exploded view of the speaker.

[0052] Figure 35 for Figure 33 The diagram shows a cross-sectional view of the loudspeaker along section line LL.

[0053] Figure 36 This is a front view schematic diagram of an acoustic module provided in an embodiment of this application.

[0054] Figure 37 for Figure 36 An exploded view of the acoustic module shown.

[0055] Figure 38 for Figure 36 The diagram shows a cross-sectional view of the acoustic module along section line MM.

[0056] Figure 39 This is a side view schematic diagram of an acoustic module provided in another embodiment of this application.

[0057] Figure 40 for Figure 39 An exploded view of the acoustic module shown.

[0058] Figure 41 for Figure 39 The diagram shows a cross-sectional view of the acoustic module along section line NN.

[0059] Figure 42 This is a side view schematic diagram of an acoustic module provided in another embodiment of this application.

[0060] Figure 43 for Figure 42 An exploded view of the acoustic module shown.

[0061] Figure 44 for Figure 42 The diagram shows a cross-sectional view of the acoustic module along section line OO.

[0062] Figure 45 This is a front view schematic diagram of a wearable speaker device provided in an embodiment of this application.

[0063] Figure 46 for Figure 45 A partially exploded view of the wearable speaker device shown.

[0064] Figure 47 for Figure 45 The diagram shows a cross-sectional view of the wearable speaker device along section line PP.

[0065] Figure 48 This is a schematic diagram showing the electrical connection between the audio signal output terminal of a wearable speaker device and the first voice coil assembly in the speaker, according to an embodiment of this application.

[0066] Figure 49 A schematic diagram showing the electrical connection between the audio signal output terminal of a wearable speaker device and the first voice coil assembly in the speaker, provided in another embodiment of this application.

[0067] Explanation of the component labels in the diagram: 1: Wearable speaker equipment 10: Speaker 100: Sink stand assembly 110: First pot stand 120: Second pot stand 130: First Protector 140: Second cover 200: Magnetic Circuit System 210: First Magnetic Circuit System 211: First Magnet Assembly 212: First magnetic conductive component 213: First magnetic gap 220: Second magnetic circuit system 221: Second magnet assembly 222: Second magnetic conductive component 223: Second magnetic gap 300: Vibration System 301: Diaphragm Assembly 310: First diaphragm assembly 320: Second diaphragm assembly 302: Voice Coil Assembly 3021: Voice coil assembly main body 3022: Voice coil assembly lead wire 330: First voice coil assembly 3301: Main body of the first voice coil assembly 3302: First voice coil assembly lead wire 331: First voice coil 3311: First voice coil main body 3312: First voice coil lead 3312a: First voice coil winding start lead 3312b: First voice coil winding termination lead 332: Second voice coil 3321: Second voice coil main body 3322: Second voice coil lead 3322a: Second voice coil winding start lead 3322b: Second voice coil winding termination lead 340: Second voice coil assembly 3401: Main body of the second voice coil assembly 3402: Second voice coil assembly lead wire 341: Third voice coil 3411: Main body of the third voice coil 3412: Third voice coil lead 3412a: Third voice coil winding start lead 3412b: Third voice coil winding termination lead C1: First vocal cavity C2: Second vocal cavity P1: First acoustic hole P2: Second acoustic hole 350: Voice coil frame 360: Centering Support Component 400: Electrical connection part 20: Acoustic Module 21: Additional speaker unit 22: Microphone assembly H1: First through hole R1: First accommodating cavity 23: Support Components C3: Third vocal cavity P3: Third acoustic hole 30: Shell 30a: First shell 30b: Second shell R2: Second accommodating cavity Q1: First anterior cavity Q2: First posterior cavity P4: Sound hole P5: Pressure relief hole 40: Battery Components 50: Printed Circuit Board Assembly 51: First group of audio electrical signal output terminals 52: Second group of audio electrical signal output terminals 60: Earmuffs Detailed Implementation

[0068] The technical solution of this application will be described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that the following embodiments are only used to explain the technical solution of this application, and the actual scope of protection of this application is determined by the claims. Equivalent substitutions or obvious modifications based on the technical concept of this application all fall within the scope of protection defined by the claims of this application. The same reference numerals in the drawings represent the same or equivalent technical features; features with the same reference numerals in different embodiments can achieve the same technical function, but their specific structures or implementation methods may differ. It should be noted that the drawings in this application are all schematic diagrams, which may not be drawn to scale, or the dimensions of some structures may be enlarged or reduced for clarity, and not all components may be depicted; they should not be construed as actual limitations on this application.

[0069] In the description of the specific embodiments, the terms "center," "axial," "radial," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "positive," and "side," etc., indicating orientations or positional relationships, are based on the orientations shown in the accompanying drawings and are used only for ease of description and simplification. They do not imply or limit the device or element to having a specific orientation, or to being constructed and operated in a specific orientation, and therefore should not be construed as limitations on this application. When the orientation of the described object changes, the relative orientation relationship also changes accordingly. Furthermore, the features "upper" or "lower" include direct placement or indirect placement through intermediate features.

[0070] The terms “set up,” “equipped with,” “connected,” “aggregated,” “assembled,” “installed,” and “fixed” should be interpreted broadly unless otherwise explicitly defined, including but not limited to: (1) fixed or detachable connection; (2) integral molding; (3) mechanical or electrical connection; (4) direct connection or indirect connection through an intermediate medium; and (5) a connecting structure within two features. The term “electrical connection” includes physical contact and electrical conduction between components, as well as connections achieved through physical lines that can transmit electrical signals, such as copper foil on printed circuit boards or wires. The terms “first,” “second,” “third,” and “fourth” are used only to distinguish the objects described and do not indicate any order, importance, dependency, or quantity limitation. A feature specified as “first,” “second,” “third,” or “fourth” includes at least one of those features. “At least one” means one or more; “multiple” means two or more.

[0071] When the terms "same" and "similar" are used to describe device performance, they indicate that, within the technical context described in this application, the performance differences are within a tolerance range acceptable to those skilled in the art and will not substantially affect the technical effect. When the terms "about," "approximately," "closely," or "roughly" are used to modify numerical values ​​or shapes, they indicate that the indicated numerical values ​​or shapes are allowed a reasonable range of error that is understandable to those skilled in the art and will not change the desired technical effect. It should be emphasized that all interpretations and descriptions of terms in this specification should be based on the principle of considering the applicant's interests and should be interpreted in the broadest and most reasonable sense.

[0072] The technical features of different embodiments of this application can be freely combined, provided that the technology is compatible. Provided that the technology is compatible and there are no contradictions, any new technical solutions formed by such combinations also fall within the scope disclosed in this application and should be considered part of this application.

[0073] In some embodiments, reference Figures 1 to 4 ,in Figure 1 A perspective view of a loudspeaker (10) provided in one embodiment of this application is shown. Figure 2 It shows Figure 1 A front view of the central loudspeaker (10). Figure 3 It shows Figure 1 Exploded view of the loudspeaker (10), Figure 4 It shows Figure 2A cross-sectional view of a loudspeaker (10) along section line AA. The loudspeaker (10) includes a frame assembly (100), a magnetic circuit system (200), a vibration system (300), and an electrical connection (400). The frame assembly (100) is used to fix and support the magnetic circuit system (200), the vibration system (300), and the electrical connection (400). The magnetic circuit system (200) includes a first magnetic circuit system (210), which includes a first magnet assembly (211), a first magnetic guide assembly (212), and a first magnetic gap (213) formed by the cooperation of the first magnet assembly (211) and the first magnetic guide assembly (212). The vibration system (300) includes a diaphragm assembly (301) and a voice coil assembly (302), the voice coil assembly (302) having a voice coil assembly body (3021) and a voice coil assembly lead (3022). The diaphragm assembly (301) includes a first diaphragm assembly (310), and the voice coil assembly (302) includes a first voice coil assembly (330). The first voice coil assembly (330) includes a first voice coil (331) and a second voice coil (332) arranged coaxially; the first voice coil (331) includes a first voice coil body (3311) and a first voice coil lead (3312), the first voice coil lead (3312) including a first voice coil winding start end lead (3312a) and a first voice coil winding end lead (3312b); the second voice coil (332) includes a second voice coil body (3321) and a second voice coil lead (3322), the second voice coil lead (3322) including a second voice coil winding start end lead (3322a) and a second voice coil winding end lead (3322b). The first voice coil body (3311) and the second voice coil body (3321) together constitute the first voice coil assembly body (3301), and the first voice coil lead (3312) and the second voice coil lead (3322) together constitute the first voice coil assembly lead (3302). The first voice coil assembly body (3301) is fixedly connected to the first diaphragm assembly (310). Both the first voice coil body (3311) and the second voice coil body (3321) are at least partially suspended within the first magnetic gap (213) for being subjected to force in the magnetic field and driving the first diaphragm assembly (310) to vibrate and produce sound. The electrical connection part (400) is used to electrically connect at least one voice coil in the voice coil assembly (302) to an external circuit to form an electrical circuit.

[0074] The main body of the first voice coil assembly (3301) can be wound using either of the following two methods: (a) The first voice coil winding start end lead (3312a) and the second voice coil winding start end lead (3322a) are both located at the same end of the first voice coil assembly body (3301) along the axial direction, and the first voice coil body (3311) and the second voice coil body (3321) have the same spiral winding direction and the same spiral extension direction. (b) The first voice coil winding start end lead (3312a) and the second voice coil winding start end lead (3322a) are respectively disposed at opposite ends of the first voice coil assembly body (3301) in the axial direction, and the first voice coil body (3311) and the second voice coil body (3321) have opposite spiral winding directions and opposite spiral extension directions.

[0075] refer to Figure 5 and Figure 6 ,in Figure 5 This illustration shows a perspective view of a first voice coil assembly (330) provided in an embodiment of this application. Figure 6 It shows from Figure 5 The diagram shows an axial end view of the first voice coil assembly (330) along direction B, representing the starting end of the first voice coil winding. In this embodiment, the first voice coil assembly body (3301) employs the aforementioned winding method (a). Specifically, the first voice coil winding starting end lead (3312a) and the second voice coil winding starting end lead (3322a) are both located at the same axial end of the first voice coil assembly body (3301); simultaneously, the first voice coil body (3311) and the second voice coil body (3321) have the same helical winding direction and the same helical extension direction.

[0076] Furthermore, in the axial end view along direction B, the first voice coil winding start lead (3312a) and the second voice coil winding start lead (3322a) are both located at the same axial end of the first voice coil assembly body (3301). For example, both the first voice coil body (3311) and the second voice coil body (3321) are wound clockwise, and the spiral extension directions of the first voice coil body (3311) and the second voice coil body (3321) are the same. Similarly, in another implementation, both the first voice coil body (3311) and the second voice coil body (3321) can be wound counterclockwise, and the spiral extension direction remains unchanged.

[0077] In some embodiments, reference Figure 5 and Figure 6 The first voice coil winding start lead (3312a) and the second voice coil winding start lead (3322a) are both located at the same axial end of the first voice coil assembly body (3301). Simultaneously, the first voice coil body (3311) and the second voice coil body (3321) have the same helical winding direction and the same helical extension direction, and the second voice coil body (3321) is wound on the radial outer circumferential surface of the first voice coil body (3311). In some other implementations, the first voice coil body (3311) and the second voice coil body (3321) can also be wound together. For example, the voice coil wires of the first voice coil (331) and the second voice coil (332) can be wound side-by-side and simultaneously.

[0078] refer to Figures 7 to 9,in Figure 7 A perspective view of a first voice coil assembly (330) provided in another embodiment of this application is shown. Figure 8 It shows from Figure 7 The first voice coil assembly (330) shown is illustrated in an axial end view along the C direction from the starting end of the first voice coil winding. Figure 9 It shows from Figure 7 The diagram shows an axial end view of the second voice coil winding start end of the first voice coil assembly (330) along the D direction. In this embodiment, the first voice coil assembly body (3301) adopts the above-described winding method (b). Specifically, the first voice coil winding start end lead (3312a) and the second voice coil winding start end lead (3322a) are respectively disposed at opposite axial ends of the first voice coil assembly body (3301); at the same time, the spiral winding directions of the first voice coil body (3311) and the second voice coil body (3321) are opposite, and their spiral extension directions are also opposite.

[0079] Furthermore, the first voice coil winding start-up lead (3312a) and the second voice coil winding start-up lead (3322a) are respectively disposed at opposite axial ends of the first voice coil assembly body (3301). (Reference) Figure 7 and Figure 8 In the axial end view along direction C, the first voice coil body (3311) is wound in a clockwise spiral, and the first voice coil body (3311) extends spirally toward the starting end of the winding of the second voice coil (332); Reference Figure 7 and Figure 9 In the axial end view along direction D, the second voice coil body (3321) is wound in a counterclockwise spiral, and the second voice coil body (3321) extends spirally toward the starting end of the first voice coil (331). Similarly, in another implementation, the first voice coil body (3311) can be wound in a counterclockwise spiral, and the second voice coil body (3321) can be wound in a clockwise spiral, but the spiral extension directions are still opposite, that is, the first voice coil body (3311) extends toward the starting end of the second voice coil (332), and the second voice coil body (3321) extends toward the starting end of the first voice coil (331).

[0080] The first voice coil assembly (330), through the specific winding and matching electrical connection described above, ensures that the first voice coil (331) and the second voice coil (332), under the excitation of the same audio signal, generate electromagnetic driving forces in the same direction in the magnetic field of the magnetic circuit system (200), enabling the diaphragm assembly (301) fixedly connected to it to move synchronously in the same direction. Simultaneously, the design of coaxial dual voice coils suspended in the same magnetic gap optimizes the space utilization and magnetic energy utilization efficiency of the magnetic circuit system (200). This scheme, while maintaining the compact overall structure of the loudspeaker (10), effectively improves the sound pressure level and electroacoustic conversion efficiency of the loudspeaker (10) by superimposing the dual driving forces in the same direction onto the commonly fixedly connected diaphragm assembly (301). Furthermore, the flexible electrical connection supports multiple driving modes, adapting to the differentiated acoustic performance requirements of different application scenarios.

[0081] In some embodiments, the magnetic circuit system (200) further includes a second magnetic circuit system (220), which includes a second magnet assembly (221), a second magnetically conductive assembly (222), and a second magnetic gap (223) formed by the cooperation of the second magnet assembly (221) and the second magnetically conductive assembly (222). Reference Figures 10 to 13 The speaker (10) has a frame assembly (100) including a first frame (110) and a second frame (120), and a magnetic circuit system (200) including a first magnetic circuit system (210) and a second magnetic circuit system (220), with the second magnetic circuit system (220) fixedly mounted on the second frame (120). The vibration system (300) includes a first diaphragm assembly (310) and two first voice coil assemblies (330). The first diaphragm assembly (310) is disposed between the first magnetic circuit system (210) and the second magnetic circuit system (220). The first voice coil body (3311) and the second voice coil body (3321) of one first voice coil assembly (330) fixedly connected to the first diaphragm assembly (310) are both at least partially suspended within the first magnetic gap (213). The first voice coil body (3311) and the second voice coil body (3321) of the other first voice coil assembly (330) fixedly connected to the first diaphragm assembly (310) are both at least partially suspended within the second magnetic gap (223). The first magnetic circuit system (210) and the second magnetic circuit system (220) respectively drive the two first voice coil assemblies (330) fixedly connected to the first diaphragm assembly (310), so that the vibration system (300) obtains a greater driving force, thereby improving the acoustic performance of the loudspeaker (10).

[0082] In some embodiments, reference Figures 10 to 13The first magnetic circuit system (210) and the first diaphragm assembly (310) are fixedly mounted on the first frame (110), and the second magnetic circuit system (220) is fixedly mounted on the second frame (120). In some other embodiments, the first diaphragm assembly (310) may also be fixedly mounted on the second frame (120).

[0083] In some embodiments, the basin frame assembly (100) may also include a cover. Reference Figure 12 and Figure 13 The basin frame assembly (100) also includes a first cover (130) disposed between the first diaphragm assembly (310) and the second basin frame (120); when the first basin frame (110) and the second basin frame (120) are assembled and fixed by sealant, the first cover (130) can prevent the sealant from overflowing onto the diaphragm surface of the diaphragm assembly (301).

[0084] In some embodiments, the first acoustic cavity (C1) formed by the frame assembly (100), the magnetic circuit system (200), and the diaphragm assembly (301) has at least one first sound inlet (P1) communicating with the atmospheric environment. The first sound inlet (P1) is located on the frame assembly (100) and / or the magnetic circuit system (200). Reference Figure 4 The first sound hole (P1) is located on the basin frame assembly (100).

[0085] In some embodiments, the basket assembly (100) having magnetic permeability may be part of the magnetic permeable component in the magnetic circuit system (200). Reference Figures 14 to 17 The basket assembly (100) with magnetic properties is part of the first magnetic component (212) in the magnetic circuit system (200).

[0086] In some embodiments, the vibration system (300) further includes a second diaphragm assembly (320). Reference Figures 18 to 20The magnetic circuit system (200) of the loudspeaker (10) includes a first magnetic circuit system (210) and a second magnetic circuit system (220), and the vibration system (300) includes a first diaphragm assembly (310), a second diaphragm assembly (320), and two first voice coil assemblies (330). The first magnetic circuit system (210) and the second magnetic circuit system (220) are disposed between the first diaphragm assembly (310) and the second diaphragm assembly (320). The first voice coil body (3311) and the second voice coil body (3321) of one first voice coil assembly (330) fixedly connected to the first diaphragm assembly (310) are at least partially suspended in the first magnetic gap (213), and the first voice coil body (3311) and the second voice coil body (3321) of the other first voice coil assembly (330) fixedly connected to the second diaphragm assembly (320) are at least partially suspended in the second magnetic gap (223). The first magnetic circuit system (210) drives a first voice coil assembly (330) fixedly connected to the first diaphragm assembly (310), and the second magnetic circuit system (220) drives another first voice coil assembly (330) fixedly connected to the second diaphragm assembly (320), so that the vibration system (300) obtains greater driving force, thereby improving the acoustic performance of the loudspeaker (10).

[0087] In some embodiments, the second acoustic cavity (C2) formed by the frame assembly (100) and the corresponding diaphragm assembly (301) is provided with at least one second sound inlet (P2) communicating with the atmospheric environment. The second sound inlet (P2) is located on the corresponding frame and / or cover of the frame assembly (100). Reference Figures 18 to 20 The first frame (110), the first cover (130) and the first diaphragm assembly (310) together form a second acoustic cavity (C2), and the second sound hole (P2) connecting the second acoustic cavity (C2) is opened on the first frame (110); the second frame (120), the second cover (140) and the second diaphragm assembly (320) together form another second acoustic cavity (C2), and the second sound hole (P2) connecting the second acoustic cavity (C2) is opened on the second frame (120).

[0088] In some embodiments, the second magnetic circuit system (220) is fixedly disposed on the first magnetic conductive component (212) of the first magnetic circuit system (210). Reference Figure 19 and Figure 20 The second magnetic circuit system (220) of the loudspeaker (10) is fixedly disposed on the first magnetic conductive component (212) between the first magnet assembly (211) and the second magnet assembly (221), and the first magnetic conductive component (212) is also part of the second magnetic conductive component (222) of the second magnetic circuit system (220).

[0089] In some embodiments, the voice coil assembly (302) further includes at least one second voice coil assembly (340), which includes a third voice coil (341). The third voice coil (341) includes a third voice coil body (3411) and third voice coil leads (3412). The third voice coil leads (3412) include a third voice coil winding start lead (3412a) and a third voice coil winding end lead (3412b). The third voice coil body (3411) constitutes the second voice coil assembly body (3401), and the third voice coil leads (3412) constitute the second voice coil assembly leads (3402). (See reference...) Figures 21 to 23 The magnetic circuit system (200) of the loudspeaker (10) includes a first magnetic circuit system (210) and a second magnetic circuit system (220), and the vibration system (300) includes a first diaphragm assembly (310), a first voice coil assembly (330), and a second voice coil assembly (340). The first diaphragm assembly (310) is disposed between the first magnetic circuit system (210) and the second magnetic circuit system (220). The first voice coil body (3311) and the second voice coil body (3321) of the first voice coil assembly (330), which is fixedly connected to the first diaphragm assembly (310), are both at least partially suspended in the first magnetic gap (213), and the third voice coil body (3411) of the second voice coil assembly (340), which is fixedly connected to the first diaphragm assembly (310), is at least partially suspended in the second magnetic gap (223). The first magnetic circuit system (210) and the second magnetic circuit system (220) respectively drive the first voice coil assembly (330) and the second voice coil assembly (340), which are fixedly connected to the first diaphragm assembly (310), so that the vibration system (300) obtains a greater driving force, thereby improving the acoustic performance.

[0090] In some embodiments, the magnetic circuit system (200) of the loudspeaker (10) includes a first magnetic circuit system (210) and a second magnetic circuit system (220), and the vibration system (300) includes a first diaphragm assembly (310), a second diaphragm assembly (320), a first voice coil assembly (330), and a second voice coil assembly (340). Reference Figures 24 to 26The first magnetic circuit system (210) and the second magnetic circuit system (220) are disposed between the first diaphragm assembly (310) and the second diaphragm assembly (320). The first voice coil body (3311) and the second voice coil body (3321) of the first voice coil assembly (330) fixedly connected to the first diaphragm assembly (310) are both at least partially suspended in the first magnetic gap (213), and the second voice coil assembly body (3401) of the second voice coil assembly (340) fixedly connected to the second diaphragm assembly (320) is at least partially suspended in the second magnetic gap (223). The first magnetic circuit system (210) drives the first voice coil assembly (330) fixedly connected to the first diaphragm assembly (310), and the second magnetic circuit system (220) drives the second voice coil assembly (340) fixedly connected to the second diaphragm assembly (320), so that the vibration system (300) obtains a greater driving force, thereby improving the acoustic performance.

[0091] In some embodiments, the voice coil assembly (302) further includes at least one voice coil skeleton (350), and at least one voice coil assembly body (3021) is wound around the radial outer peripheral surface of the voice coil skeleton (350). Reference Figures 27 to 29 The first voice coil assembly (330) of the loudspeaker (10) also includes a voice coil skeleton (350). The first voice coil body (3311) is wound around the radial outer circumferential surface of the voice coil skeleton (350). The body of the voice coil skeleton (350), the first voice coil body (3311), and the second voice coil body (3321) together constitute the body of the first voice coil assembly (3301). One axial end of the body of the voice coil skeleton (350) is fixedly connected to the first diaphragm assembly (310). It should be noted that the voice coil assembly body (3021) referenced when winding the voice coil assembly body (3021) does not include the body of the voice coil skeleton (350). The voice coil skeleton (350) can be used to support the voice coil assembly body (3021) to improve structural stability, or to adjust the position of the voice coil assembly body (3021) suspended in the corresponding magnetic gap so that it is in a reasonable position.

[0092] The voice coil assembly body (3021) and the corresponding diaphragm assembly (301) are fixedly connected in at least one of the following ways, and one diaphragm assembly (301) is allowed to be connected by at least two voice coil assembly bodies (3021): (a) At least one axial end of the voice coil assembly body (3021) is fixedly connected to the corresponding diaphragm assembly (301). (b) A portion of the radial outer peripheral surface of at least one voice coil assembly body (3021) is fixedly connected to the corresponding diaphragm assembly (301).

[0093] In some embodiments, reference Figure 3 and Figure 4One axial end of the first voice coil assembly body (3301) of the loudspeaker (10) is fixedly connected to the first diaphragm assembly (310). In some other implementations, refer to Figure 22 and Figure 23 One axial end of the first voice coil assembly body (3301) and one axial end of the second voice coil assembly body (3401) of the loudspeaker (10) are connected together to the first diaphragm assembly (310).

[0094] In some embodiments, reference Figures 30 to 32 The radial outer peripheral surface of the first voice coil assembly body (3301) of the loudspeaker (10) is fixedly connected to the first diaphragm assembly (310). In some other implementations, the vibration system (300) of the loudspeaker (10) may include at least two voice coil assembly bodies (3021) whose radial outer peripheral surfaces are fixedly connected to the same diaphragm assembly (301).

[0095] In some embodiments, the vibration system (300) of the loudspeaker (10) may include at least two voice coil assembly bodies (3021) simultaneously suspended within the same magnetic gap formed by the magnetic circuit system (200).

[0096] The vibration system (300) of the loudspeaker (10) also includes at least one centering support assembly (360), which is disposed at at least one of the following locations: (a) At least one voice coil assembly (302) is fixedly connected between at least one centering support assembly (360) and the corresponding diaphragm assembly (301); (b) At least one centering support assembly (360) is fixedly connected between at least one voice coil assembly (302) and the corresponding diaphragm assembly (301).

[0097] The centering support assembly (360) is used to limit the movement trajectory of the voice coil assembly (302) and prevent skew.

[0098] In some embodiments, reference Figures 30 to 32 The first voice coil assembly (330) of the loudspeaker (10) is fixedly connected between the two centering support assemblies (360) and the first diaphragm assembly (310).

[0099] In some embodiments, reference Figures 33 to 35 The centering support assembly (360) of the loudspeaker (10) is fixedly connected between the first voice coil assembly (330) and the first diaphragm assembly (310).

[0100] In some embodiments, the flexible circuit board assembly serves as a centering support assembly (360) of the loudspeaker (10), which also serves as an electrical connection portion (400) electrically connected to the voice coil. (See reference...) Figures 30 to 32The first voice coil assembly (330) of the loudspeaker (10) is fixedly connected between the two centering support assemblies (360) and the first diaphragm assembly (310). The two centering support assemblies (360) serve as electrical connection parts (400) and are electrically connected to the first voice coil (331) and the second voice coil (332) of the first voice coil assembly (330) respectively through the copper foil of the flexible circuit board.

[0101] In some embodiments, the electrical connection portion (400) of the speaker (10) may be fixed to the frame assembly (100) by insert injection molding or by adhesive bonding. Reference Figures 3 to 4 The electrical connection part (400) of the speaker (10) is a metal conductive terminal, which is fixed to the frame assembly (100) by an insert injection molding process. (See reference) Figures 14 to 17 The electrical connection part (400) of the speaker (10) is a printed circuit board, which is glued to the frame assembly (100).

[0102] refer to Figures 36 to 44 This application also provides an acoustic module (20). The acoustic module (20) includes at least one of the aforementioned loudspeakers (10) and at least one acoustic component. The acoustic component may be any one or more combinations of the following: (a) Additional sound-producing unit (21); (b) Microphone assembly (22); (c) The speaker (10) as described above.

[0103] The acoustic module (20) optimizes the space occupied by multiple acoustic devices in the wearable speaker device (1) by combining the above-mentioned speaker (10) with acoustic components.

[0104] refer to Figures 36 to 38 ,in Figure 36 This paper shows a front view schematic diagram of an acoustic module (20) provided in one embodiment of the present application. Figure 37 It shows Figure 36 Exploded view of the acoustic module (20), Figure 38 It shows Figure 36A cross-sectional view of the acoustic module (20) along section line MM. The acoustic module (20) includes the aforementioned loudspeaker (10) and an additional sound-emitting unit (21). The additional sound-emitting unit (21) is disposed at one end of the magnetic circuit system (200) of the aforementioned loudspeaker (10) axially away from its diaphragm assembly (301). The aforementioned loudspeaker (10) has a first through hole (H1) axially penetrating the magnetic circuit system (200), the frame assembly (100), and the vibration system (300), which serves as the sound inlet for the additional sound-emitting unit (21). The magnetic circuit system (200) has a first receiving cavity (R1) communicating with the first through hole (H1), and the additional sound-emitting unit (21) is at least partially housed in the first receiving cavity (R1), which can reduce the axial height of the acoustic module (20). The sound generated by the above-mentioned loudspeaker (10) and the additional sound unit (21) when they are working is superimposed in phase and propagated outward, which can effectively improve the acoustic performance. In some other implementations, the additional sound unit (21) may also be disposed on the cover of the basket assembly (100).

[0105] Additional sound-generating units (21) include, but are not limited to, at least one of the following types: electric, electromagnetic, piezoelectric, and capacitive.

[0106] In some embodiments, the acoustic module (20) includes the speaker (10) and microphone assembly (22) described above. Reference Figures 39 to 41 The acoustic module (20) includes the aforementioned loudspeaker (10) and microphone assembly (22). The microphone assembly (22) is disposed at one end of the magnetic circuit system (200) of the loudspeaker (10) axially away from its diaphragm assembly (301). The loudspeaker (10) has a first through-hole (H1) axially penetrating the magnetic circuit system (200), the frame assembly (100), and the vibration system (300), which serves as part or all of the pickup channel for the microphone assembly (22). The magnetic circuit system (200) has a first receiving cavity (R1) communicating with the first through-hole (H1), and the microphone assembly (22) is at least partially housed in the first receiving cavity (R1), thereby reducing the axial height of the acoustic module (20). In some implementations, the microphone assembly (22) is disposed at one end of the magnetic circuit system (200) of the speaker (10) axially away from its diaphragm assembly (301), and the speaker (10) is provided only with a first through-hole (H1) axially penetrating the magnetic circuit system (200), the frame assembly (100), and the vibration system (300), which serves as part or all of the pickup channel of the microphone assembly (22). In some implementations, the microphone assembly (22) may also be disposed on the cover of the frame assembly (100).

[0107] The microphone assembly (22) includes, but is not limited to, at least one of the following types: capacitive, piezoelectric, piezoresistive, etc.

[0108] In some embodiments, the acoustic module (20) includes two of the above-described loudspeakers (10) or a combination of the above-described loudspeakers (10) and various acoustic components. Reference Figures 42 to 44 The acoustic module (20) includes two loudspeakers (10), an additional sound-emitting unit (21), and a support assembly (23). The two loudspeakers (10) are arranged axially and their diaphragm assemblies (301) are arranged adjacent to each other. The additional sound-emitting unit (21) is located at the end of the magnetic circuit system (200) of any one of the loudspeakers (10) that is axially away from its diaphragm assembly (301). The support assembly (23) is arranged in a ring shape as a connecting part and extends axially. It is assembled with the two loudspeakers (10) to form a third acoustic cavity (C3). The third acoustic cavity (C3) has a third sound-guiding hole (P3) that connects to the atmospheric environment. The sound generated by the two loudspeakers (10) and the additional sound-emitting unit (21) when they are working is superimposed in phase through the third acoustic cavity (C3) and then propagated outward through the third sound-guiding hole (P3) that connects to the third acoustic cavity (C3), which can effectively improve the acoustic performance of the acoustic module (20).

[0109] This application also provides a wearable speaker device (1). The wearable speaker device (1) includes a housing (30), at least one set of audio electrical signal output terminals, and at least one of the aforementioned loudspeakers (10) or acoustic modules (20). Reference Figures 45 to 49 ,in Figure 45 This illustration shows a front view of a wearable speaker device (1) according to an embodiment of this application. Figure 46 It shows Figure 45 A partially exploded view of the wearable speaker device (1) shown in the diagram. Figure 47 It shows Figure 45 The wearable speaker device (1) shown is illustrated in a cross-sectional view along section line PP. Figure 48 This diagram illustrates the electrical connection between the audio signal output terminal of a wearable speaker device (1) provided in an embodiment of this application and the first voice coil assembly (330) in the speaker (10). Figure 49 A schematic diagram of the electrical connection between the audio signal output terminal of the wearable speaker device (1) provided in another embodiment of this application and the first voice coil assembly (330) in the speaker (10) is shown.

[0110] In the wearable speaker device (1), the first voice coil assembly (330) of the speaker (10) ensures, through the specific winding and matching electrical connection method, that the first voice coil (331) and the second voice coil (332) generate electromagnetic driving forces in the same direction in the magnetic field of the magnetic circuit system (200) under the excitation of the same audio signal, so that the diaphragm assembly (301) fixedly connected to it can move synchronously in the same direction. At the same time, the design of coaxial dual voice coils suspended in the same magnetic gap optimizes the space utilization and magnetic energy utilization efficiency of the magnetic circuit system (200). Under the premise of maintaining the overall compact structure of the speaker (10), the dual driving forces with the same direction are superimposed on the diaphragm assembly (301) fixedly connected to it, which can effectively improve the sound pressure level and electroacoustic conversion efficiency of the speaker (10). This meets the requirements of the wearable speaker device (1) for compact structure and high-performance acoustic output. In addition, the flexible electrical connection method supports multiple driving modes, which can adapt to the different acoustic performance requirements of wearable speaker devices (1) in different application scenarios.

[0111] In some embodiments, reference Figures 45 to 47 The wearable speaker device (1) is an in-ear headphone (only the headphone worn on the left ear is shown in the figure for illustrative purposes). The in-ear headphone includes a housing (30), the aforementioned speaker (10), ear tips (60), and components such as a battery assembly (40) and a printed circuit board assembly (50) disposed within the housing (30). The housing (30) includes a first housing (30a) and a second housing (30b), which together form a second accommodating cavity (R2). The aforementioned speaker (10) is fixedly disposed within the second accommodating cavity (R2), dividing the second accommodating cavity (R2) into a first front cavity (Q1) and a first rear cavity (Q2). The housing (30) has at least one sound outlet (P4) communicating with the first front cavity (Q1) and at least one pressure relief hole (P5) communicating with the first rear cavity (Q2). The audio electrical signal output terminal is disposed on the printed circuit board assembly (50) and is electrically connected to the aforementioned speaker (10) through a physical line capable of transmitting electrical signals, such as flexible circuit board copper foil or wires. An ear cover (60) can be fitted onto the sound outlet (P4). The ear cover (60) is used to fit against the inner wall of the ear canal when the headphones are worn, so that the sound emitted by the speaker (10) can be transmitted to the user's ear canal through the sound outlet (P4) and the ear cover (60). The first sound inlet (P1) is connected to the pressure relief hole (P5) through the first rear cavity (Q2).

[0112] In some embodiments, a channel connecting the first front cavity (Q1) and the first rear cavity (Q2) is also provided in the housing (30) of the wearable speaker device (1) or on the speaker (10) for acoustic performance tuning.

[0113] In some embodiments, the wearable speaker device (1) further includes at least one microphone assembly (22) for receiving ambient sound in scenarios such as calls or active noise cancellation. The at least one microphone assembly (22) in the wearable speaker device (1) is disposed in any combination of one or more of the following locations: (a) Inside the sound outlet (P4), the sound outlet (P4) serves as part or all of the pickup channel of the microphone assembly (22); (b) On the acoustic module (20) as described above, the sound outlet (P4) is part or all of the pickup channel of the microphone assembly (22); (c) In the first front cavity (Q1), the sound outlet (P4) serves as part or all of the pickup channel of the microphone assembly (22); (d) In the first rear cavity (Q2), the sound outlet (P4) or the pressure relief hole (P5) serves as part of the pickup channel of the microphone assembly (22); (e) In the first rear cavity (Q2), the corresponding through hole on the housing (30) serves as part or all of the pickup channel of the microphone assembly (22); (f) Other locations on the housing (30), where the corresponding through holes on the housing (30) serve as part or all of the pickup channel for the microphone assembly (22).

[0114] refer to Figure 47 At least one microphone component (22) of the in-ear headphones is disposed within the sound outlet (P4).

[0115] In some embodiments, a partition is provided between the speaker (10) or acoustic module (20) of the wearable speaker device (1) and the battery assembly (40) or printed circuit board assembly (50) to improve the waterproof performance of the wearable speaker device (1).

[0116] In some embodiments, reference Figure 48The first voice coil (331) and the second voice coil (332) in the first voice coil assembly (330) of the above-mentioned loudspeaker (10) are connected in parallel with the same polarity and are electrically connected to the first set of audio electrical signal output terminals (51) in the wearable speaker device (1) through a physical circuit capable of transmitting electrical signals, such as flexible circuit board copper foil or wires. "Parallel with the same polarity" refers to the electrical connection method of the first voice coil (331) and the second voice coil (332), ensuring that when the first voice coil (331) and the second voice coil (332) are excited by the same audio signal input, the two voice coils generate electromagnetic driving forces in the same direction in the magnetic field of the magnetic circuit system (200), so that the diaphragm assembly (301) fixedly connected to them can move synchronously in the same direction. The dual driving forces with the same direction are transmitted to the diaphragm assembly (301) which is fixedly connected together and superimposed, which can effectively improve the sound pressure level and electroacoustic conversion efficiency of the above-mentioned loudspeaker (10), thereby improving the acoustic performance of the wearable speaker device (1).

[0117] Furthermore, when the wearable speaker device (1) includes multiple speakers (10) or acoustic modules (20), by reasonably connecting the electrical connection parts (400) on the multiple speakers (10) or acoustic modules (20) to the corresponding audio electrical signal output terminals, the multiple sound generating units can produce sound with the same phase when they work. After being superimposed through the first front cavity (Q1) or the third acoustic cavity (C3), the sound is propagated outward through the sound outlet (P4), which can effectively improve the acoustic performance of the wearable speaker device (1).

[0118] In some embodiments, reference Figure 49 The first voice coil (331) of the first voice coil assembly (330) of the aforementioned loudspeaker (10) is electrically connected to the first set of audio electrical signal output terminals (51) of the wearable speaker device (1) through a physical circuit capable of transmitting electrical signals, such as a flexible circuit board copper foil or a wire. The second voice coil (332) is electrically connected to the second set of audio electrical signal output terminals (52) of the wearable speaker device (1) through a physical circuit capable of transmitting electrical signals, such as a flexible circuit board copper foil or a wire. To ensure that the first set of audio electrical signal output terminals (51) and the second set of audio electrical signal output terminals (52) output the same audio signal, the first voice coil (331) and the second voice coil (332) generate electromagnetic driving forces in the same direction in the magnetic field of the magnetic circuit system (200), so that the diaphragm assembly (301) fixedly connected to it can move synchronously and in the same direction. The dual driving forces, driven in the same direction, are superimposed on the diaphragm assembly (301) which is fixedly connected, which can effectively improve the sound pressure level and electroacoustic conversion efficiency of the loudspeaker (10), thereby improving the acoustic performance of the wearable speaker device (1). In addition, the flexible electrical connection method supports multiple driving modes, which can adapt to the different acoustic performance requirements of the wearable speaker device (1) in different application scenarios.

[0119] Furthermore, when the wearable speaker device (1) includes multiple speakers (10) or acoustic modules (20), by reasonably connecting the electrical connection parts (400) on the multiple speakers (10) or acoustic modules (20) to the corresponding audio electrical signal output terminals, the multiple sound generating units can produce sound with the same phase when they work. After being superimposed through the first front cavity (Q1) or the third acoustic cavity (C3), the sound is propagated outward through the sound outlet (P4), which can effectively improve the acoustic performance of the wearable speaker device (1).

[0120] In some embodiments, the wearable speaker device (1) further includes an active noise cancellation function. The multiple voice coils of the speaker (10) or acoustic module (20) are respectively electrically connected to multiple sets of audio electrical signal output terminals in the corresponding noise cancellation link through physical lines that can transmit electrical signals, such as flexible circuit board copper foil or wires. Compared with the wearable speaker device (1) that only contains a single voice coil speaker, this solution can provide more noise cancellation paths and effectively improve the active noise cancellation performance.

[0121] The wearable speaker device (1) in this application includes, but is not limited to, mobile terminals with acoustic transducers such as speakers (10), such as headphones, smartwatches, smart glasses and AR / VR headsets.

[0122] The technical solution of this application optimizes the utilization efficiency of the magnetic circuit system (200) and the driving force transmission of the vibration system (300) by coaxially arranging multiple voice coils and adopting a specific winding method. Specifically, the first voice coil (331) and the second voice coil (332) coaxially arranged in the first voice coil assembly (330) share the same magnetic gap, which improves the magnetic energy utilization rate; while the specific winding method and electrical connection method ensure that the two voice coils generate electromagnetic driving forces in the same direction in the magnetic field of the magnetic circuit system (200), so that the diaphragm assembly (301) fixedly connected to it can move synchronously and in the same direction, realizing the effective superposition of driving forces. This design can effectively improve the sound pressure level and electroacoustic conversion efficiency of the loudspeaker (10) while maintaining the overall compact structure of the loudspeaker (10). At the same time, the modular design allows for flexible configuration and is suitable for a variety of acoustic applications and wearable speaker devices (1).

[0123] The above specific embodiments are merely illustrative examples of this application and are not intended to limit the scope of protection of this application. Any equivalent modifications or improvements based on the technical solutions of this application fall within the protection scope of the claims of this application.

Claims

1. A coaxial dual voice coil loudspeaker, characterized in that, include: The basin frame assembly, magnetic circuit system, vibration system, and electrical connections; The basin frame assembly is used to securely support the magnetic circuit system, the vibration system, and the electrical connection portion; The magnetic circuit system includes at least one first magnetic circuit system, the first magnetic circuit system including at least one first magnet assembly, at least one first magnetic conductive assembly, and at least one first magnetic gap formed by the cooperation of the first magnet assembly and the first magnetic conductive assembly; The vibration system includes a diaphragm assembly and a voice coil assembly. The voice coil assembly has a voice coil assembly body and a voice coil assembly lead wire. The voice coil assembly body is fixedly connected to the corresponding diaphragm assembly. The diaphragm assembly includes at least one first diaphragm assembly; The voice coil assembly includes at least one first voice coil assembly, the first voice coil assembly including a first voice coil and a second voice coil coaxially arranged, the first voice coil including a first voice coil body and a first voice coil lead, the first voice coil lead including a first voice coil winding start end lead and a first voice coil winding end lead, the second voice coil including a second voice coil body and a second voice coil lead, the second voice coil lead including a second voice coil winding start end lead and a second voice coil winding end lead; The first voice coil body and the second voice coil body together constitute the first voice coil assembly body, and the first voice coil lead and the second voice coil lead together constitute the first voice coil assembly lead; Both the first voice coil body and the second voice coil body are at least partially suspended within the same magnetic gap formed by the magnetic circuit system; The electrical connection portion is used to electrically connect at least one of the voice coils in the voice coil assembly to an external circuit; The first voice coil assembly body satisfies any one of the following winding methods: (a) The first voice coil winding start end lead and the second voice coil winding start end lead are both located at the same axial end of the first voice coil assembly body, and the first voice coil body and the second voice coil body have the same spiral winding direction and the same spiral extension direction. (b) The first voice coil winding start end lead and the second voice coil winding start end lead are respectively disposed at opposite ends of the axial direction of the first voice coil assembly body, and the spiral winding direction of the first voice coil body and the spiral extension direction of the second voice coil body are opposite.

2. The coaxial dual voice coil loudspeaker according to claim 1, characterized in that, The magnetic circuit system also includes a second magnetic circuit system; The second magnetic circuit system is fixedly mounted on the first magnetic circuit system or at least one of the frame components; The second magnetic circuit system includes at least one second magnet assembly, at least one second magnetic conductive assembly, and at least one second magnetic gap formed by the cooperation of the second magnet assembly and the second magnetic conductive assembly.

3. The coaxial dual voice coil loudspeaker according to claim 2, characterized in that, The diaphragm assembly further includes at least one second diaphragm assembly, which is fixedly connected to the corresponding voice coil assembly body.

4. The coaxial dual voice coil loudspeaker according to any one of claims 1 to 3, characterized in that: The voice coil assembly further includes at least one second voice coil assembly, the second voice coil assembly including a third voice coil, the third voice coil including a third voice coil body and a third voice coil lead, the third voice coil lead including a third voice coil winding start end lead and a third voice coil winding end lead, the third voice coil body constituting the body of the second voice coil assembly, and the third voice coil lead constituting the lead of the second voice coil assembly; The second voice coil assembly body is at least partially suspended within the corresponding magnetic gap formed by the magnetic circuit system, and the second voice coil assembly body is fixedly connected to the diaphragm assembly corresponding to the vibration system.

5. The coaxial dual voice coil loudspeaker according to claim 1, characterized in that, The voice coil assembly further includes at least one voice coil skeleton; At least one of the voice coil assembly bodies is wound around the radial outer circumferential surface of the voice coil skeleton.

6. The coaxial dual voice coil loudspeaker according to claim 1, characterized in that: The voice coil assembly body and the corresponding diaphragm assembly are fixedly connected in at least one of the following ways, and one diaphragm assembly is allowed to be connected by at least two voice coil assembly bodies: (a) At least one axial end of the main body of the voice coil assembly is fixedly connected to the corresponding diaphragm assembly; (b) At least a portion of the radial outer peripheral surface of the voice coil assembly body is fixedly connected to the corresponding diaphragm assembly.

7. The coaxial dual voice coil loudspeaker according to claim 1, characterized in that, The vibration system also includes at least one centering support assembly; The centering support assembly is disposed at at least one of the following locations: (a) At least one of the voice coil assemblies is fixedly connected between at least one of the centering support assemblies and the corresponding diaphragm assembly; (b) At least one of the centering support components is fixedly connected between at least one of the voice coil components and the corresponding diaphragm components.

8. An acoustic module, characterized in that, include: At least one coaxial dual voice coil loudspeaker as described in any one of claims 1 to 7 and at least one acoustic component; The acoustic component is any one or more of the following combinations: (a) Additional sound-producing unit; (b) Microphone assembly; (c) A coaxial dual voice coil loudspeaker as claimed in any one of claims 1 to 7.

9. A wearable speaker device, characterized in that, include: The housing, at least one set of audio electrical signal output terminals, and at least one coaxial dual voice coil loudspeaker as described in any one of claims 1 to 7 or at least one acoustic module as described in claim 8; The housing has a receiving cavity and a sound outlet channel communicating with the receiving cavity; The coaxial dual voice coil loudspeaker or the acoustic module is housed within the accommodating cavity; The audio signal output terminal is located in the internal space of the housing and is electrically connected to at least one of the voice coils in the coaxial dual voice coil speaker or the acoustic module.

Images