WO2026001023A1 - 发声模组和电子设备 - Google Patents

发声模组和电子设备

Info

Publication number
WO2026001023A1
WO2026001023A1 PCT/CN2025/078429 CN2025078429W WO2026001023A1 WO 2026001023 A1 WO2026001023 A1 WO 2026001023A1 CN 2025078429 W CN2025078429 W CN 2025078429W WO 2026001023 A1 WO2026001023 A1 WO 2026001023A1
Authority
WO
WIPO (PCT)
Prior art keywords
voice coil
sound
vibration
magnetic
magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/078429
Other languages
English (en)
French (fr)
Inventor
李波波
蔡晓东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to US19/367,034 priority Critical patent/US20260052346A1/en
Publication of WO2026001023A1 publication Critical patent/WO2026001023A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/026—Transducers having separately controllable opposing diaphragms, e.g. for ring-tone and voice
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • DPS Digital Signal Processing loudspeakers integrate two vibration systems through a shared magnetic circuit. Both vibration systems require space for upper vibration and sound outlet at the overall unit. Furthermore, each system has two diaphragms, each requiring two vibration spaces (upper and lower) for vertical vibration, resulting in four vibration spaces for both diaphragms. This significantly impacts the thickness of the DPS product. When the thickness of a DPS product is reduced, to maintain EQ (Equalizer) performance—that is, to maintain low-frequency performance—the speaker's input voltage must be increased to push the frequency shift of each frequency point to Xmax, thereby maximizing product performance.
  • EQ Equalizer
  • the present invention proposes a sound-generating module, the sound-generating module comprising:
  • the outer shell includes a first module shell and a second module shell disposed along a first direction, the first module shell and the second module shell forming a receiving cavity;
  • a sound-emitting unit wherein the sound-emitting unit is housed within the receiving cavity and forms a front cavity and a rear cavity with the outer shell;
  • the sound-generating unit includes:
  • a magnetic circuit system comprising a plurality of magnetic circuit units distributed along a second direction, each magnetic circuit unit comprising a first magnetic component and a second magnetic component spaced apart along a first direction, the second direction being perpendicular to the first direction, the first magnetic component having a first magnetic gap, and the second magnetic component having a second magnetic gap;
  • a vibration system comprising multiple vibration units, each magnetic circuit unit corresponding to one vibration unit, each vibration unit being disposed between the first magnetic component and the second magnetic component of the corresponding magnetic circuit unit, each vibration unit comprising a diaphragm and a voice coil connected to the diaphragm, the diaphragm comprising a vibrating plate and a folded ring disposed around the vibrating plate along a second direction, the voice coil comprising a first voice coil portion and a second voice coil portion located on both sides of the vibrating plate along the first direction, the first voice coil portion being located in the first magnetic gap of the corresponding magnetic circuit unit, and the second voice coil portion being located in the second magnetic gap of the corresponding magnetic circuit unit;
  • At least one of the vibration units radiates sound waves of the first phase outward, and the remaining at least one vibration unit radiates sound waves of the second phase outward.
  • the first phase and the second phase are opposite phases, and the outer shell is provided with a sound outlet hole corresponding to each vibration unit.
  • the sound outlet hole is connected to the front cavity, and the sound waves of each vibration unit are radiated to the outside through the corresponding sound outlet hole.
  • two adjacent vibration components radiate sound waves of the first phase and the second phase outward, respectively, wherein each vibration component includes one vibration unit or a plurality of adjacent vibration units, and the number of vibration units in two adjacent vibration components is the same or close.
  • the plurality of vibration units radiate sound waves of the same phase outward, wherein the second operating state is different from the first operating state.
  • the first voice coil section and the second voice coil section are wound from the same wire, and the diaphragm includes an inner diaphragm connected to the inner wall of the voice coil and an outer diaphragm connected to the outer wall of the voice coil;
  • the first voice coil portion and the second voice coil portion are wound from the same wire
  • the diaphragm includes an inner diaphragm connected to the inner wall of the voice coil and an outer diaphragm connected to the outer wall of the voice coil.
  • the inner diaphragm includes an inner flat plate portion and an inner bent portion that extends from the outer edge of the inner flat plate portion and connects to the inner wall of the voice coil
  • the outer diaphragm includes an outer flat plate portion and an outer bent portion that extends from the inner edge of the outer flat plate portion and connects to the outer wall of the voice coil.
  • the first voice coil portion and the second voice coil portion are wound from the same wire, and the diaphragm includes an inner diaphragm connected to the inner wall of the voice coil and an outer diaphragm connected to the outer wall of the voice coil, and one side of the second voice coil portion is connected to an external circuit.
  • first voice coil portion and the second voice coil portion may be formed by independently winding different wires.
  • the folded ring in each of the vibration units, includes a first connecting portion, a deformation portion, and a second connecting portion connected sequentially along the second direction.
  • the first connecting portion is connected to the vibration plate
  • the second connecting portion is connected to the housing
  • the deformation portion is recessed toward the side where the second magnetic component is located.
  • the two ends of the folded ring along the first direction are a first end and a second end, the first end is connected to the edge of the vibration plate, the second end is connected to the housing or the second magnetic component, and the first end is disposed on the same side as the first magnetic component, and the second end is disposed on the same side as the second magnetic component.
  • the first magnetic assembly includes a first inner magnet and a first outer magnet disposed along the second direction, and the first magnetic gap is formed between the first inner magnet and the first outer magnet;
  • the second magnetic component includes a second inner magnet and a second outer magnet disposed along the second direction, and a second magnetic gap is formed between the second inner magnet and the second outer magnet.
  • the magnetic poles of the first inner magnet and the second inner magnet are in opposite directions, the magnetic poles of the first outer magnet and the second outer magnet are in opposite directions, and the magnetic poles of the first inner magnet and the first outer magnet are in opposite directions.
  • the first magnetic gap and the second magnetic gap are aligned along the first direction
  • the first external magnet is a ring magnet
  • first inner magnet and the second inner magnet are arranged opposite to each other, and the first outer magnet and the second outer magnet are arranged opposite to each other.
  • the surface of the folded ring is provided with a conductive layer
  • the voice coil is electrically connected to the conductive layer
  • the housing is injection molded with conductive terminals
  • the conductive layer and the conductive terminals are connected by conductive adhesive, so that the voice coil is electrically connected to the conductive terminals through the conductive layer;
  • each of the vibration units may further include a centering support plate, which is a conductive centering support plate, and the second voice coil unit is connected to an external circuit through the centering support plate.
  • the first module shell includes a first plastic shell and a first metal plate embedded in the first plastic shell
  • the second module shell includes a second plastic shell and a second metal plate embedded in the second plastic shell
  • the first metal plate and/or the second metal plate are made of a magnetically conductive material
  • the sound outlet is located on the same side of the outer casing sidewall.
  • the inner vibrating plate is a magnetically conductive plate to form the magnetically conductive part
  • the inner vibrating plate may be provided with a magnetic conductive element on at least one side along the first direction to form the magnetic conductive part;
  • At least one side surface of the inner vibrating plate along the first direction may be coated with a magnetically conductive material to form the magnetically conductive portion.
  • the rear cavity is filled with sound-absorbing material
  • the second module shell has a filling port for filling the sound-absorbing material
  • the second module shell is also provided with a damping element for covering the filling port.
  • the present invention also proposes an electronic device, including a device housing and a sound-generating module as described above.
  • each magnetic circuit unit includes a first magnetic component and a second magnetic component respectively disposed on the upper and lower sides of the vibration unit, realizing a dual magnetic circuit design of the sound-generating unit, which makes the magnetic field distribution in the vibration area of the voice coil uniform, and can provide the voice coil with a large driving force that changes slowly and flatly with displacement, reducing the risk of distortion.
  • the multiple magnetic circuit units and multiple vibration units in the sound-generating unit of this invention are distributed horizontally, which does not occupy too much space in the vertical thickness of the shell. Furthermore, when all vibration units vibrate up and down, they only need two vibration spaces: the upper vibration space and the lower vibration space. This does not occupy additional thickness space of the sound-generating unit, which is conducive to achieving a thin design.
  • the first operating state of the sound-emitting module of this invention can be a receiver state.
  • the receiver state at least one vibrating unit radiates sound waves of a first phase outwards, and the remaining at least one vibrating unit radiates sound waves of a second phase outwards.
  • the first and second phases are opposite phases, which can form a dipole effect, providing a far-field noise reduction effect and improving call privacy.
  • the sound waves of each vibrating unit radiate to the outside through a sound outlet, meaning each vibrating unit has a corresponding sound outlet and emits sound from its corresponding outlet, preventing sound interference and improving acoustic performance.
  • Figure 1 is a schematic diagram of the assembly of a sound-generating module according to an embodiment of the present invention
  • Figure 2 is a cross-sectional schematic diagram of a sound-generating module according to an embodiment of the present invention.
  • Figure 3 is an exploded view of a sound-generating module according to another embodiment of the present invention.
  • Figure 7 is an exploded view of a sound-generating module according to another embodiment of the present invention.
  • Figure 8 is another cross-sectional schematic diagram of a sound-generating module according to an embodiment of the present invention.
  • Figure 9 is a schematic diagram of the magnetic field distribution of a sound-generating unit according to an embodiment of the present invention.
  • Figure 10 is a schematic diagram of the BL(x) curve of a sound-generating unit according to an embodiment of the present invention.
  • multiple vibration units 30 radiate sound waves of the same phase outward, wherein the second operating state is different from the first operating state.
  • the first voice coil 32 and the second voice coil 32 are integrated into a single design, wound from the same wire, forming a single voice coil 32 design, which is simple and convenient.
  • the diaphragm 311 is separated into an inner diaphragm 3111 and an outer diaphragm 3112 by the voice coil 32.
  • the inner diaphragm 3111 is connected to the inner wall of the voice coil 32
  • the outer diaphragm 3112 is connected to the outer wall of the voice coil 32, thereby realizing the assembly of the voice coil 32 and the diaphragm 31.
  • the outer bent portion is formed by extending the inner edge of the outer flat plate portion 3116 along a first direction, i.e., by bending vertically, thereby increasing the connection area between the outer diaphragm 3112 and the outer wall of the voice coil 32 and improving the assembly stability of the outer diaphragm 3112 and the voice coil 32.
  • the first voice coil 32 and the second voice coil 32 are wound from the same wire.
  • the diaphragm 311 includes an inner diaphragm 3111 connected to the inner wall of the voice coil 32 and an outer diaphragm 3112 connected to the outer wall of the voice coil 32.
  • One side of the second voice coil 32 is connected to an external circuit.
  • the first and second voice coils 32 are integrated and wound from the same wire, forming a single voice coil 32 design, which is simple and convenient.
  • the diaphragm 311 is separated by the voice coil 32 into an inner diaphragm 3111 and an outer diaphragm 3112.
  • the inner diaphragm 3111 is connected to the inner wall of the voice coil 32, and the outer diaphragm 3112 is connected to the outer wall of the voice coil 32, realizing the assembly of the voice coil 32 and the diaphragm 31.
  • one side of the second voice coil 32 is connected to an external circuit, realizing the conduction of the voice coil 32 with the external circuit.
  • the first voice coil 32 and the second voice coil 32 are each independently wound from different wires.
  • the first voice coil 32 and the second voice coil 32 are designed separately, each independently wound from different wires, forming a double voice coil 32 design.
  • the diaphragm 311 is not separated by the voice coils 32, and the diaphragm 311 is a one-piece diaphragm 311.
  • the diaphragm 311 includes an inner diaphragm 3111 connected to the inner wall of the voice coil 32 and an outer diaphragm 3112 connected to the outer wall of the voice coil 32;
  • the diaphragm 31 also includes a waterproof membrane 313, the waterproof membrane 313 is connected between the inner diaphragm 3111 and the outer diaphragm 3112, and the waterproof membrane 313 is attached to and wrapped around the end of the second voice coil 32 facing the second magnetic component 22.
  • the first voice coil 32 and the second voice coil 32 are integrated into a single design, wound from the same wire, forming a single voice coil 32 design, which is simple and convenient.
  • the diaphragm 311 is separated by the voice coil 32 into an inner diaphragm 3111 and an outer diaphragm 3112, wherein the inner diaphragm 3111 is connected to the inner wall of the voice coil 32, and the outer diaphragm 3112 is connected to the outer wall of the voice coil 32, thereby realizing the assembly of the voice coil 32 and the diaphragm 31.
  • the diaphragm 31 also includes a waterproof membrane 313.
  • the inner diaphragm 3111 and the outer diaphragm 3112 are connected by the waterproof membrane 313.
  • the waterproof membrane 313 is attached to the upper end of the second voice coil 32 to play a waterproof role, thereby improving the waterproof performance and level of the sound-generating unit 100.
  • the voice coil 32 of this invention can be designed as a single voice coil 32 or a double voice coil 32, which can be flexibly designed according to actual needs. As shown in Figures 2 to 7 and Figures 12 to 15, in two adjacent vibration units 30, the two folded rings 312 are connected to each other as a whole, which is convenient for manufacturing.
  • the folded ring 312 is a horizontal folded ring 312.
  • the folded ring 312 includes a first connecting portion 3124, a deformation portion 3125, and a second connecting portion 3126 connected sequentially in the horizontal direction.
  • the first connecting portion 3124 is connected to the vibrating plate 311, and the second connecting portion 3126 is connected to the housing 10, realizing assembly with the housing 10.
  • the deformation portion 3125 is recessed downwards, which is beneficial for supporting and guiding the vertical vibration of the diaphragm 31.
  • Designing the folded ring 312 as a horizontal folded ring 312 results in a simple structure and can better guide the vertical movement of the diaphragm 31, maintain the linearity of the vibration, reduce non-axial offset, and further reduce distortion.
  • each vibration unit 30 the two ends of the folded ring 312 along the first direction are a first end 3121 and a second end 3122, respectively.
  • the first end 3121 is connected to the edge of the vibration plate 311, and the second end 3122 is connected to the housing 10 or the second magnetic component 22.
  • the first end 3121 is disposed on the same side as the first magnetic component 21, and the second end 3122 is disposed on the same side as the second magnetic component 22.
  • the two ends of the folded ring 312 along the vertical direction are a first end 3121 and a second end 3122, respectively.
  • the first end 3121 is connected to the vibrating plate 311, and the second end 3122 is connected to the housing 10 or the second magnetic component 22.
  • the first end 3121 is set on the same side as the first magnetic component 21, and the second end 3122 is set on the same side as the second magnetic component 22, so that the folded ring 312 has a certain height in the vertical direction.
  • the folded ring 312 is a vertical folded ring 312 with an extension in the vertical direction, which reduces the space occupied by the folded ring 312 in the horizontal direction, expands the size of the vibrating plate 311 in the horizontal direction of the sound-generating unit 100, increases the effective vibration area (SD) of the sound-generating unit 100, increases the sensitivity of the sound-generating unit 100, and improves the mid-frequency performance of the product, thus optimizing the mid-frequency performance of the product.
  • SD effective vibration area
  • the folded ring 312 includes multiple bent portions 3123 connected sequentially in the vertical direction. Each bent portion 3123 bends horizontally, and the bending directions of any two adjacent bent portions 3123 are opposite, making the folded ring 312 form a wave-shaped bending structure.
  • the two outermost bent portions 3123 along the first direction form the first end 3121 and the second end 3122, respectively. That is, the uppermost bent portion 3123 and the lowermost bent portion 3123 form the first end 3121 and the second end 3122, respectively.
  • Designing the folded ring 312 as a wave-shaped bending structure that is arranged vertically and bends multiple times in the horizontal direction improves the ductility of the folded ring 312, further reduces the space occupied by the folded ring 312 in the horizontal direction, thereby further expanding the size of the diaphragm 311 in the horizontal direction of the sound-generating unit 100, increasing the effective vibration area of the sound-generating unit 100 to a greater extent, further improving the sensitivity of the sound-generating unit 100 and optimizing the mid-frequency performance.
  • the folded ring 312 is connected to the side of the vibrating plate 311 facing the second magnetic component 22, and the second end 3122 is arranged around the second magnetic component 22. As shown in FIG6, the folded ring 312 is connected to the side of the vibrating plate 311 facing the second magnetic component 22, that is, the folded ring 312 is connected to the lower side of the vibrating plate 311, and the second end 3122 surrounds the outer side of the second magnetic component 22, which is a reasonable structural design.
  • the outline dimension of the second end 3122 projected along the first direction is larger than the outline dimension of the first end 3121 projected along the first direction. That is, the outline dimension of the second end 3122 projected along the vertical direction onto the horizontal plane is larger than the outline dimension of the first end 3121 projected onto the horizontal plane. Both the first end 3121 and the second end 3122 are arranged in a ring shape.
  • the outer outline dimension of the second end 3122 is increased, which further improves the extensibility of the folded ring 312, reduces the space occupied by the folded ring 312 in the horizontal direction, expands the size of the vibrating plate 311 in the horizontal direction of the sound-generating unit 100, thereby increasing the effective vibration area of the sound-generating unit 100, and at the same time improving the compliance of the folded ring 312.
  • the outline of the outer edge of the vibrating plate 311 projected along the first direction is located outside the outline of the second magnetic component 22 projected along the first direction. That is, the outline of the outer edge of the vibrating plate 311 projected on the horizontal plane is located outside the outline of the second magnetic component 22 projected on the horizontal plane, which makes the outer outline size of the vibrating plate 311 larger and increases the effective vibration area of the sound generating unit 100.
  • the outline of the outer edge of the vibrating plate 311 projected along the first direction is located outside the outline of the first magnetic circuit assembly projected along the first direction. That is, the outline of the outer edge of the vibrating plate 311 projected on the horizontal plane is located outside the outline of the first magnetic assembly 21 projected on the horizontal plane, which makes the outer outline size of the vibrating plate 311 larger and increases the effective vibration area of the sound generating unit 100.
  • the vibrating plate 311 is bent and extended towards the first magnetic component 21 near its outer edge to form a ramp structure, and the first magnetic component 21 is provided with a clearance portion for avoiding the ramp structure.
  • the vibrating plate 311 is bent and extended upward near its outer edge to form a ramp structure, and the clearance portion of the first magnetic component 21 can avoid the ramp structure to prevent interference between the first magnetic component 21 and the vibrating plate 311.
  • the first magnetic component 21 includes a first inner magnet 212 and a first outer magnet 213 arranged along a second direction.
  • a first magnetic gap 211 is formed between the first inner magnet 212 and the first outer magnet 213. Magnetic field lines passing through the first magnetic gap 211 can be generated between the first inner magnet 212 and the first outer magnet 213, so that when the first voice coil 32 is energized, the first voice coil 32 vibrates up and down to cut the magnetic field lines.
  • the second magnetic component 22 includes a second inner magnet 222 and a second outer magnet 223 arranged along the second direction.
  • a second magnetic gap 221 is formed between the second inner magnet 222 and the second outer magnet 223. Magnetic field lines passing through the second magnetic gap 221 can be generated between the second inner magnet 222 and the second outer magnet 223, so that when the second voice coil 32 is energized, the second voice coil 32 vibrates up and down to cut the magnetic field lines.
  • each magnetic circuit unit 20 the magnetic poles of the first inner magnet 212 and the second inner magnet 222 are opposite, the magnetic poles of the first outer magnet 213 and the second outer magnet 223 are opposite, and the magnetic poles of the first inner magnet 212 and the first outer magnet 213 are opposite.
  • This arrangement forms a closed loop between the magnetic field lines generated by the first outer magnet 213 and the first inner magnet 212, and also forms a closed loop between the magnetic field lines generated by the second outer magnet 223 and the second inner magnet 222. This results in more and denser magnetic field lines passing through the voice coil 32, leading to a greater driving force.
  • the first magnetic gap 211 and the second magnetic gap 221 are aligned along a first direction so that the first voice coil 32 and the second voice coil 32 located in the first magnetic gap 211 and the second magnetic gap 221 respectively are aligned, thereby improving vibration consistency and avoiding sway.
  • the first external magnet 213 is a ring magnet.
  • the ring magnet has good continuity, which is beneficial to improving the uniformity of the magnetic field distribution.
  • the first inner magnet 212 and the second inner magnet 222 are arranged opposite to each other, and the first outer magnet 213 and the second outer magnet 223 are arranged opposite to each other. This facilitates the alignment of the first magnetic gap 211 and the second magnetic gap 221, so that the first voice coil 32 and the second voice coil 32 located in the first magnetic gap 211 and the second magnetic gap 221 respectively can be aligned, thereby improving vibration consistency and avoiding sway.
  • the dimensions of the first inner magnet 212 along the second direction are the same as those of the second inner magnet 222 along the second direction, and the dimensions of the first outer magnet 213 along the second direction are smaller than those of the second outer magnet 223 along the second direction.
  • the shapes of the first inner magnet 212 and the second inner magnet 222 are matched, and the dimensions of the first inner magnet 212 in the horizontal direction are the same as those of the second inner magnet 222 in the horizontal direction, which helps to improve the uniformity of the magnetic field distribution.
  • the dimensions of the first outer magnet 213 in the horizontal direction are smaller than those of the second outer magnet 223 in the horizontal direction, that is, the outer edge dimension of the first outer magnet 213 is smaller than that of the second outer magnet 223.
  • the outer edge of the first outer magnet 213 is narrowed to avoid interference between the first outer magnet 213 and the diaphragm 31.
  • each vibration unit 30 the surface of the folded ring 312 is provided with a conductive layer 3127, the voice coil 32 is electrically connected to the conductive layer 3127, and the housing 10 is injection molded with a conductive terminal 12.
  • the conductive layer 3127 and the conductive terminal 12 are connected by conductive adhesive, so that the voice coil 32 is electrically connected to the conductive terminal 12 through the conductive layer 3127.
  • a conductive layer 3127 is provided on the side surface of the surround 312 facing the second voice coil 32, that is, a conductive layer 3127 is provided on the lower surface of the surround 312.
  • the second voice coil 32 is connected to the conductive layer 3127, and the conductive layer 3127 is connected to the conductive terminal 12 on the housing 10 through conductive adhesive.
  • the conductive terminal 12 is electrically connected to an external circuit, thereby enabling the second voice coil 32 to be electrically connected to the external circuit through the conductive layer 3127, realizing the conduction between the second voice coil 32 and the external circuit.
  • the conductive terminal 12 is injection molded into the housing 10, which improves the integration and compactness of the housing 10.
  • the conductive layer 3127 on the surface of the surround 312 forms a conductive path 3128, making the surround 312 also conductive, resulting in a high degree of structural integration.
  • each of the vibration units 30 further includes a centering support plate 40, which is a conductive centering support plate 40, and the second voice coil 32 is connected to an external circuit through the centering support plate 40.
  • the centering support 40 is disposed at the end of the second voice coil 32 away from the diaphragm 31, that is, at the bottom end of the second voice coil 32.
  • the centering support 40 includes an inner fixing part 41, a spring arm part 42, and an outer fixing part 43.
  • the inner fixing part 41, the spring arm part 42, and the outer fixing part 43 are connected sequentially from the inside to the outside along the second direction, that is, the horizontal direction.
  • the outer fixing part 43 is connected to the housing 10, while the inner fixing part 41 is connected to the second voice coil 32.
  • the spring arm part 42 connects the inner fixing part 41 and the outer fixing part 43.
  • the spring arm part 42 is elastic, allowing the inner fixing part 41 to vibrate with the second voice coil 32.
  • the centering support 40 plays a role in centering and supporting the voice coil 32, preventing the voice coil 32 from being polarized, and improving the vibration stability of the voice coil 32.
  • the second magnetic component 22 has a clearance space 224, which can avoid the corresponding centering support 40, specifically avoiding the spring arm portion 42 of the centering support 40.
  • the layout is reasonable, and the centering support 40 and the magnetic circuit unit 20 do not interfere with each other.
  • one side of the second voice coil 32 is connected to an external circuit, realizing the conduction between the voice coil 32 and the external circuit.
  • the centering support 40 is a conductive centering support 40, and the second voice coil 32 is connected to the external circuit through the centering support 40, thereby realizing the conduction between the second voice coil 32 and the external circuit. Since the centering support 40 is conductive, the inclusion of other conductive components is eliminated, resulting in a high degree of integration and simplified structure.
  • the sound-generating unit 100 also includes a housing 10.
  • the housing 10 has multiple receiving spaces 11 distributed along a second direction. Each receiving space 11 corresponds to a magnetic circuit unit 20.
  • the housing 10 includes a plastic bracket 13 and a first metal plate 14 and a second metal plate 15 disposed on both sides of the plastic bracket 13 along a first direction.
  • the plastic bracket 13, the first metal plate 14, and the second metal plate 15 enclose the receiving space 11.
  • a first magnetic component 21 is disposed on the first metal plate 14, and a second magnetic component 22 is disposed on the second metal plate 15.
  • the first metal plate 14 is embedded in the first module housing 52, and the second metal plate 15 is embedded in the second module housing 53.
  • the housing 10 of the sound-generating unit 100 has a plurality of accommodating spaces 11 distributed along the second direction, i.e. the horizontal direction.
  • Each accommodating space 11 contains a magnetic circuit unit 20 and a vibration unit 30, such that the plurality of magnetic circuit units 20 and the plurality of vibration units 30 are distributed along the horizontal direction.
  • first metal plate 14 and the second metal plate 15 are respectively disposed on the upper and lower sides of the plastic bracket 13.
  • the plastic bracket 13, the first metal plate 14, and the second metal plate 15 of the housing 10 enclose and form an accommodating space 11, which is a reasonable structural design.
  • first magnetic component 21 is disposed on the first metal plate 14, and the second magnetic component 22 is disposed on the second metal plate 15, realizing the assembly between the housing 10 and the magnetic circuit unit 20.
  • conductive terminals 12 are injection molded on the plastic bracket 13, which improves the integration and compactness of the plastic bracket 13.
  • the first module shell 52 and the second module shell 53 can both be plastic shells.
  • the first metal plate 14 is embedded in the first module shell 52 and the second metal plate 15 is embedded in the second module shell 53, resulting in a compact structure.
  • the first module shell 52 can be supplied together with the first bracket 131, and the second module shell 53 can be supplied together with the second bracket 132, thereby improving assembly efficiency and convenience.
  • first metal plate 14 and/or the second metal plate 15 are made of magnetically conductive material, which enables the first metal plate 14 and/or the second metal plate 15 to have magnetic conductivity, which is beneficial for correcting magnetic field lines.
  • the plastic bracket 13 includes a first bracket 131 and a second bracket 132.
  • the first bracket 131 and the second bracket 132 are designed separately along a first direction, i.e., along the vertical direction, for easy assembly and disassembly.
  • the first bracket 131, the second bracket 132, the first metal plate 14, and the second metal plate 15 enclose and form an accommodating space 11.
  • the first bracket 131 surrounds the first magnetic component 21, and the second bracket 132 surrounds the second magnetic component 22.
  • Conductive terminals 12 are injection molded onto the second bracket 132, resulting in a reasonable structural design.
  • the sound outlet 54 is located on the same side of the side wall of the housing 50. Understandably, multiple vibration units 30 have multiple sound outlets 54 and emit sound from the corresponding sound outlets 54.
  • the multiple sound outlets 54 are located on the same side of the side wall of the housing 50, which is convenient for manufacturing and reasonable in design, so as to realize that the sound generation module 200 emits sound on the same side.
  • the first voice coil 32 and the second voice coil 32 are wound from the same wire.
  • the diaphragm 311 includes an inner diaphragm 3111 connected to the inner wall of the voice coil 32 and an outer diaphragm 3112 connected to the outer wall of the voice coil 32.
  • the first voice coil 32 and the second voice coil 32 are integrated and wound from the same wire, forming a single voice coil 32 design, which is simple and convenient.
  • the diaphragm 311 is separated by the voice coil 32 into an inner diaphragm 3111 and an outer diaphragm 3112.
  • the inner diaphragm 3111 is connected to the inner wall of the voice coil 32
  • the outer diaphragm 3112 is connected to the outer wall of the voice coil 32, thereby realizing the assembly of the voice coil 32 and the diaphragm 31.
  • the inner vibrating plate 3111 has a magnetically conductive part 3113.
  • the inner vibrating plate 3111 can be attracted by the first magnetic component 21 and the second magnetic component 22.
  • the resultant force of the attraction of the first magnetic component 21 and the second magnetic component 22 on the magnetically conductive part 3113 points towards the first magnetic component 21, which is beneficial to assist the inner vibrating plate 3111 in vibrating upward.
  • the design of the magnetically conductive part 3113 can assist the vibration of the inner vibrating plate 3111 and improve the sound production effect.
  • the inner vibrating plate 3111 is a magnetically conductive plate to form a magnetically conductive part 3113. That is, the inner vibrating plate 3111 itself is a magnetically conductive plate to form a magnetically conductive part 3113, without the need to set other magnetically conductive parts 3113, and the structure is simple.
  • a magnetic conductive element is embedded inside the inner vibrating plate 3111 to form a magnetic conductive part 3113. Embedding the magnetic conductive element inside the inner vibrating plate 3111 results in good structural consistency and compactness.
  • the inner vibrating plate 3111 has a magnetic guide member on at least one side along the first direction to form a magnetic guide portion 3113.
  • a magnetic guide member is provided on the upper side of the inner vibrating plate 3111.
  • a magnetic guide member is provided on the lower side of the inner vibrating plate 3111, as shown in FIG20.
  • magnetic guide members are provided on both the upper and lower sides of the inner vibrating plate 3111.
  • At least one surface of the inner vibrating plate 3111 along the first direction is coated with a magnetically conductive material to form a magnetically conductive portion 3113.
  • the upper surface of the inner vibrating plate 3111 is coated with a magnetically conductive material.
  • the lower surface of the inner vibrating plate 3111 is coated with a magnetically conductive material.
  • both the upper and lower surfaces of the inner vibrating plate 3111 are coated with a magnetically conductive material.
  • the magnetic conductive part 3113 of the present invention can be formed and positioned according to actual needs, and the setting method is diverse and highly flexible.
  • the number of accommodating spaces 11 can be flexibly set according to actual needs.
  • the number of accommodating spaces 11 is set to two, which is not too many and is conducive to realizing the miniaturization design of the sound-generating unit 100.
  • the number of accommodating spaces 11 is set to two, and correspondingly, the number of magnetic circuit units 20 and vibration units 30 is also two.
  • Each accommodating space 11 is provided with one magnetic circuit unit 20 and one vibration unit 30.
  • the two accommodating spaces 11 can be arranged side by side along the direction of the short axis side 324 of the voice coil 32. Understandably, the size of the short axis side 324 is shorter and the size of the long axis side 323 is longer.
  • the short axis side 324 occupies less space than the long axis side 323. Arranging the two accommodating spaces 11 side by side along the direction of the short axis side 324 of the voice coil 32 ensures that the size of the housing 10 is not too long, and the structural design is reasonable.
  • the rear cavity 512 is filled with sound-absorbing material
  • the second module shell 53 has a filling port for the sound-absorbing material.
  • the second module shell 53 is also provided with a damping member for covering the filling port. Filling the rear cavity 512 with sound-absorbing material can adjust the acoustic performance of the sound-generating module 200.
  • the filling port in the second module shell 53 allows the sound-absorbing material to be filled into the rear cavity 512. After filling is completed, the damping member covers the filling port to prevent sound-absorbing material leakage.
  • the first bracket 131 can be a one-piece design or a split design.
  • the one-piece design of the first bracket 131 is easy to manufacture, eliminates assembly gaps and assembly errors, and has a compact structure.
  • the split design of the first bracket 131 is easy to assemble and disassemble and has high flexibility.
  • each accommodating space 11 is provided with a corresponding first bracket 131.
  • the second support 132 can be designed as an integral unit or as a separate unit.
  • An integral design of the second support 132 is easier to manufacture, eliminates assembly gaps and assembly errors, and has a compact structure.
  • a separate design of the second support 132 is easier to assemble and disassemble and has high flexibility.
  • one second support 132 is provided for each accommodating space 11.
  • Multiple vibration units 30 can each use an independent rear cavity 512 or share a common rear cavity 512, which can be flexibly set according to the actual situation.
  • the present invention also proposes an electronic device, including a device housing and the aforementioned sound-generating module.
  • the specific structure of the sound-generating module in this electronic device is as described in the above embodiments. Since this electronic device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

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Abstract

本发明公开一种发声模组和电子设备，涉及电声技术领域，包括外壳和发声单体，外壳包括沿第一方向设置并围成容纳腔的第一模组壳和第二模组壳，发声单体包括磁路系统和振动系统，磁路系统包括多个沿第二方向分布的磁路单元，各磁路单元包括沿第一方向间隔设置的第一磁组件和第二磁组件；振动系统包括多个振动单元，各磁路单元对应于一振动单元，各振动单元设置于对应的磁路单元的第一磁组件和第二磁组件之间，各振动单元的音圈包括位于振动板沿第一方向的两侧的第一音圈部和第二音圈部，第一音圈部位于对应的磁路单元的第一磁间隙，第二音圈部位于对应的磁路单元的第二磁间隙。本发明的发声模组能够实现轻薄化设计，且提升通话私密性。

Description

发声模组和电子设备 技术领域
本发明涉及电声技术领域，特别涉及一种发声模组和应用该发声模组的的电子设备。
背景技术
当前，便携式智能化设备越来越轻薄，特别是折叠类产品，因此，终端设备对超薄微型发声模组，比如扬声器模组的需求越来越高。
常规DPS(Digital Signal Processing，数字信号处理)扬声器通过共用磁路将两套振动系统集成在一起，两套振动系统都需要整机端预留上振空间及出声管道，且两套振动系统具有两套振膜，每套振膜在上下振动时都需要上振动空间和下振动空间这两个振动空间，两套振膜则需要四个振动空间，对DPS产品的厚度空间占用大。当DPS产品厚度降低时，为了维持产品EQ(Equalizer，均衡器)下的性能，即，维持产品在低频时，增大扬声器的输入电压，将扬声器每个频点的位移推到Xmax，从而最大限度的发挥产品性能，产品内部和整机端都需要预留较大的振动空间，因此只能减薄磁路单元中的磁铁、华司和磁轭。然而，过薄的磁路单元在运输、清洗、充磁时，碎裂率较高，导致物料成本急剧上升，并且，由于磁路单元中磁铁、华司、磁轭都进行了不同程度的减薄，导致产品的跌落损坏风险增大，产品可靠性和良率也会大幅降低，无法完成量产。
发明内容
本发明的主要目的是提出一种能够实现轻薄化设计，且提升通话私密性的发声模组和电子设备。
为实现上述目的，本发明提出一种发声模组，所述发声模组包括：
外壳，所述外壳包括沿第一方向设置的第一模组壳和第二模组壳，所述第一模组壳和所述第二模组壳围合形成容纳腔；
发声单体，所述发声单体收容于所述容纳腔内并与所述外壳之间形成前腔和后腔；
所述发声单体包括：
磁路系统，所述磁路系统包括多个沿第二方向分布的磁路单元，各所述磁路单元包括沿第一方向间隔设置的第一磁组件和第二磁组件，所述第二方向与所述第一方向相互垂直，所述第一磁组件具有第一磁间隙，所述第二磁组件具有第二磁间隙；
振动系统，所述振动系统包括多个振动单元，各所述磁路单元对应于一所述振动单元，各所述振动单元设置于对应的所述磁路单元的所述第一磁组件和所述第二磁组件之间，各所述振动单元包括振膜和与所述振膜连接的音圈，所述振膜包括振动板和沿所述第二方向环设于所述振动板的折环，所述音圈包括位于振动板沿所述第一方向的两侧的第一音圈部和第二音圈部，所述第一音圈部位于对应的所述磁路单元的所述第一磁间隙，所述第二音圈部位于对应的所述磁路单元的所述第二磁间隙；
其中，在第一工作状态下，至少一个所述振动单元向外辐射第一相位的声波，剩余的至少一个所述振动单元向外辐射第二相位的声波，所述第一相位和所述第二相位为相反相位，且所述外壳对应各所述振动单元开设有出声孔，所述出声孔与所述前腔连通，各所述振动单元的声波经对应的所述出声孔向外界辐射。
在一实施方式中，在第一工作状态下，相邻的两个振动组件分别向外辐射所述第一相位和所述第二相位的声波，其中，各所述振动组件包括一个所述振动单元或相邻的多个所述振动单元，且相邻的两个所述振动组件中的所述振动单元的数量相同或接近。
在一实施方式中，在第二工作状态下，多个所述振动单元向外辐射相同相位的声波，其中，所述第二工作状态不同于所述第一工作状态。
在一实施方式中，各所述振动单元中，
所述第一音圈部和所述第二音圈部由同一根导线绕制而成，所述振动板包括与所述音圈内壁连接的内振动板及与所述音圈外壁连接的外振动板；
或者，所述第一音圈部和所述第二音圈部由同一根导线绕制而成，所述振动板包括与所述音圈内壁连接的内振动板及与所述音圈外壁连接的外振动板，所述内振动板包括内平板部以及由所述内平板部的外边缘弯折延伸并与所述音圈内壁连接的内折弯部，且/或，所述外振动板包括外平板部以及由所述外平板部的内边缘弯折延伸并与所述音圈外壁连接的外折弯部；
或者，所述第一音圈部和所述第二音圈部由同一根导线绕制而成，所述振动板包括与所述音圈内壁连接的内振动板及与所述音圈外壁连接的外振动板，所述第二音圈部的一侧与外部电路连接；
或者，所述第一音圈部和所述第二音圈部分别由不同的导线独立绕制形成。
在一实施方式中，各所述振动单元中，所述折环包括沿所述第二方向依次连接的第一连接部、形变部和第二连接部，所述第一连接部连接所述振动板，所述第二连接部连接壳体，所述形变部朝向所述第二磁组件所在侧凹陷设置；
或者，各所述振动单元中，所述折环沿所述第一方向的两端分别为第一端和第二端，所述第一端与所述振动板的边缘连接，所述第二端与所述壳体或所述第二磁组件连接，且所述第一端与所述第一磁组件同侧设置，所述第二端与所述第二磁组件同侧设置。
在一实施方式中，所述第一磁组件包括沿所述第二方向设置的第一内磁铁及第一外磁铁，所述第一内磁铁和所述第一外磁铁之间形成所述第一磁间隙；
所述第二磁组件包括沿所述第二方向设置的第二内磁铁及第二外磁铁，所述第二内磁铁和所述第二外磁铁之间形成所述第二磁间隙。
在一实施方式中，各所述磁路单元中，
所述第一内磁铁和第二内磁铁的磁极方向相反，所述第一外磁铁和所述第二外磁铁的磁极方向相反，所述第一内磁铁和所述第一外磁铁的磁极方向相反；
且/或，所述第一磁间隙和所述第二磁间隙沿所述第一方向对齐设置；
且/或，所述第一外磁铁为环形磁铁；
且/或，所述第一内磁铁与所述第二内磁铁相对设置，所述第一外磁铁与所述第二外磁铁相对设置。
在一实施方式中，各所述振动单元中，所述折环的表面设有导电层，所述音圈与所述导电层电连接，所述壳体上注塑有导电端子，所述导电层和所述导电端子通过导电胶连接，使得所述音圈通过所述导电层与所述导电端子电连接；
或者，各所述振动单元还包括定心支片，所述定心支片为导电的定心支片，所述第二音圈部通过所述定心支片与外部电路连接。
在一实施方式中，所述第一模组壳包括第一塑胶壳以及嵌设于所述第一塑胶壳的第一金属板，所述第二模组壳包括第二塑胶壳以及嵌设于所述第二塑胶壳的第二金属板；
所述发声单体还包括壳体，所述壳体具有多个沿所述第二方向分布的容纳空间，各所述容纳空间对应收容有一所述磁路单元，所述壳体包括塑胶支架以及沿所述第一方向分设于所述塑胶支架两侧的所述第一金属板和所述第二金属板，所述塑胶支架、所述第一金属板和所述第二金属板围合形成所述容纳空间，所述第一磁组件设置于所述第一金属板，所述第二磁组件设置于所述第二金属板。
在一实施方式中，所述第一金属板和/或所述第二金属板为导磁材质制件；
且/或，所述出声孔位于所述外壳侧壁同一侧。
在一实施方式中，各所述振动单元中，所述第一音圈部和所述第二音圈部由同一根导线绕制而成，所述振动板包括与所述音圈内壁连接的内振动板及与所述音圈外壁连接的外振动板；所述第一内磁铁和第二内磁铁的磁极方向相反，所述内振动板具有导磁部。
在一实施方式中，所述内振动板为导磁板件，以形成所述导磁部；
或者，所述内振动板的内部嵌设有导磁件，以形成所述导磁部；
或者，所述内振动板沿所述第一方向的至少一侧设置有导磁件，以形成所述导磁部；
或者，所述内振动板沿所述第一方向的至少一侧表面涂覆有导磁材料，以形成所述导磁部。
在一实施方式中，所述后腔填充有吸音材料，所述第二模组壳开设有填充吸音材料的填充口，所述第二模组壳还设置有用于覆盖所述填充口的阻尼件。
本发明还提出一种电子设备，包括设备外壳及如上所述的发声模组。
本发明发声模组中，各磁路单元包括分设于振动单元上下两侧的第一磁组件和第二磁组件，实现了发声单体的双磁路设计，使得音圈振动区域的磁场分布均匀，可为音圈提供较大且随位移变化而缓慢平坦的驱动力，降低失真风险。
而且，相较于常规DPS扬声器而言，本发明发声单体中多个磁路单元之间及多个振动单元之间均沿水平方向分布，在壳体的竖向厚度上不占用过多的空间，且所有振动单元在上下振动时仅需要上振动空间和下振动空间这两个振动空间即可，不额外占用发声单体的厚度空间，利于实现薄型化设计。
并且，本发明发声模组的第一工作状态可为受话器状态，在受话器状态下，至少一个振动单元向外辐射第一相位的声波，剩余的至少一个振动单元向外辐射第二相位的声波，第一相位和第二相位为相反相位，可形成偶极子效应，具有远场消音的技术效果，提升通话私密性。且各振动单元的声波经一出声孔向外界辐射，即各振动单元对应有一个出声孔并从对应的出声孔出声，声音之间不相互干扰，提高声学性能。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明一实施例发声模组的装配示意图；
图2为本发明一实施例发声模组的截面示意图；
图3为本发明另一实施例发声模组的分解示意图；
图4为本发明又一实施例发声单体的截面示意图；
图5为本发明一实施例发声单体的分解示意图；
图6为本发明再一实施例发声单体的截面示意图；
图7为本发明再一实施例发声模组的分解示意图；
图8为本发明一实施例发声模组的另一截面示意图；
图9为本发明一实施例发声单体的磁场分布示意图；
图10为本发明一实施例发声单体的BL(x)曲线示意图；
图11为本发明一实施例发声单体中振动单元的充磁示意图；
图12为本发明一实施例发声单体中音圈和振膜的截面示意图；
图13为本发明另一实施例发声单体中音圈和振膜的截面示意图；
图14为本发明又一实施例发声单体中音圈和振膜的截面示意图；
图15为本发明一实施例发声单体中折环的结构示意图；
图16为本发明一实施例发声单体中第二支架采用一体式设计的结构示意图；
图17为本发明一实施例发声单体中第二支架采用分体式设计的结构示意图；
图18为本发明一实施例发声模组中第一模组壳与第一支架一起来料的结构示意图；
图19为本发明一实施例发声模组中第二模组壳与第二支架一起来料的结构示意图；
图20为本发明一实施例发声单体中内振动板和导磁部的截面示意图。
附图标号说明：
100、发声单体；10、壳体；11、容纳空间；12、导电端子；13、塑胶支
架；131、第一支架；132、第二支架；14、第一金属板；15、第二金属板；20、磁路单元；21、第一磁组件；211、第一磁间隙；212、第一内磁铁；213、第一外磁铁；22、第二磁组件；221、第二磁间隙；222、第二内磁铁；223、第二外磁铁；224、避让空间；30、振动单元；31、振膜；311、振动板；3111、内振动板；3112、外振动板；3113、导磁部；3114、内平板部；3115、内弯折部；3116、外平板部；3117、外弯折部；312、折环；3121、第一端；3122、第二端；3123、弯折部；3124、第一连接部；3125、形变部；3126、第二连接部；3127、导电层；3128、导电路径；313、防水膜；32、音圈；321、第一音圈部；322、第二音圈部；323、长轴边；324、短轴边；40、定心支片；41、内固定部；42、弹臂部；43、外固定部；200、发声模组；50、外壳；51、容纳腔；511、前腔；512、后腔；52、第一模组壳；53、第二模组壳；54、出声孔；55、导声通道。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中有涉及方向性指示(诸如上、下、左、右、前、后……)，则该方向性指示仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
当前，便携式智能化设备越来越轻薄，特别是折叠类产品，因此，终端设备对超薄微型发声模组，比如扬声器模组的需求越来越高。
常规DPS(Digital Signal Processing，数字信号处理)扬声器通过共用磁路将两套振动系统集成在一起，两套振动系统都需要整机端预留上振空间及出声管道，且两套振动系统具有两套振膜，每套振膜在上下振动时都需要上振动空间和下振动空间这两个振动空间，两套振膜则需要四个振动空间，对DPS产品的厚度空间占用大。当DPS产品厚度降低时，为了维持产品EQ(Equalizer，均衡器)下的性能，即，维持产品在低频时，增大扬声器的输入电压，将扬声器每个频点的位移推到Xmax，从而最大限度的发挥产品性能，产品内部和整机端都需要预留较大的振动空间，因此只能减薄磁路单元中的磁铁、华司和磁轭。然而，过薄的磁路单元在运输、清洗、充磁时，碎裂率较高，导致物料成本急剧上升，并且，由于磁路单元中磁铁、华司、磁轭都进行了不同程度的减薄，导致产品的跌落损坏风险增大，产品可靠性和良率也会大幅降低，无法完成量产。
鉴于此，有必要提出一种发声模组和电子设备，以解决或至少缓解上述技术问题。
如图1至图8所示，本发明提出一种发声模组200，发声模组200包括外壳50和发声单体100，外壳50包括沿第一方向设置的第一模组壳52和第二模组壳53，第一模组壳52和第二模组壳53围合形成容纳腔51。发声单体100收容于容纳腔51内且与外壳50之间形成前腔511和后腔512。
发声单体100包括磁路系统和振动系统，其中，磁路系统包括多个沿第二方向分布的磁路单元20，各磁路单元20包括沿第一方向间隔设置的第一磁组件21和第二磁组件22，第二方向与第一方向相互垂直，第一磁组件21具有第一磁间隙211，第二磁组件22具有第二磁间隙221；振动系统包括多个振动单元30，各磁路单元20对应有一振动单元30，各振动单元30设置于对应的磁路单元20的第一磁组件21和第二磁组件22之间，各振动单元30包括振膜31和与振膜31连接的音圈32，振膜31包括振动板311和沿第二方向环设于振动板311的折环312，音圈32包括位于振动板311沿第一方向的两侧的第一音圈32部和第二音圈32部，第一音圈32部位于对应的磁路单元20的第一磁间隙211，第二音圈32部位于对应的磁路单元20的第二磁间隙221；
其中，在第一工作状态下，至少一个振动单元30向外辐射第一相位的声波，剩余的至少一个振动单元30向外辐射第二相位的声波，第一相位和第二相位为相反相位，且外壳50对应振动单元30开设有出声孔54，出声孔54与前腔511连通，振动单元30的声波经对应的出声孔54向外界辐射。
本发明发声模组200中的发声单体100可为扬声器单体，具体可为DPS扬声器单体，发声单体100可应用在电子设备的发声模组200中，电子设备可为电脑、手机、平板以及智能穿戴设备等。本实施例以发声模组200为扬声器模组为例进行说明。
第一方向为图2和图8所示的竖直方向，竖直方向为上下方向，第二方向为图2和图8所示的水平方向，水平方向为左右方向。
在一实施例中，外壳50开设有出声孔54，外壳50包括沿第一方向设置的第一模组壳52和第二模组壳53，即，第一模组壳52和第二模组壳53沿上下方向设置，其中，第一模组壳52位于第二模组壳53的上侧，第一模组壳52和第二模组壳53围合形成容纳腔51，以便收容发声单体100，结构紧凑。
发声单体100收容于容纳腔51内，并和外壳50之间形成前腔511和后腔512，出声孔54与前腔511连通，实现发声模组200的正常出声。具体地，外壳50具有供各振动单元30辐射声波的导声通道，导声通道与出声孔54连通，使得振动单元30策动空气发出的声波可通过导声通道及出声孔54出声，实现发声模组200的正常出声。
发声单体100中，磁路系统包括沿第二方向，即沿水平方向分布的多个磁路单元20，各磁路单元20对应于一振动单元30，使得多个磁路单元20之间及多个振动单元30之间均沿水平方向分布。其中，各磁路单元20包括第一磁组件21和第二磁组件22，第一磁组件21和第二磁组件22沿上下方向间隔分布，且振动单元30位于设置于对应的磁路单元20的第一磁组件21和第二磁组件22之间，即振动单元30的上下两侧分别具有第一磁组件21和第二磁组件22。第一磁组件21和第二磁组件22为对应的振动单元30的音圈32提供驱动力，使得音圈32沿第一方向振动，进而带动振膜31沿第一方向振动，实现振动发声。
振膜31包括振动板311和折环312，其中，折环312沿第二方向，即沿水平方向环设于振动板311，音圈32的第一音圈32部和第二音圈32部分别位于振动板311的上侧和下侧，并且，第一音圈32部位于对应的磁路单元20的第一磁间隙211，第二音圈32部位于对应的磁路单元20的第二磁间隙221。音圈32通电时，第一音圈32部和第二音圈32部分别在第一磁间隙211内和第二磁间隙221内做往复切割磁力线运动，带动振膜31上下振动，从而策动空气发声，完成电声之间的能量转换。
如图9所示，本发明发声模组200中，各磁路单元20包括分设于振动单元30上下两侧的第一磁组件21和第二磁组件22，实现了发声模组200的双磁路设计，使得音圈32振动区域的磁场分布均匀，可为音圈32提供较大且随位移变化而缓慢平坦的驱动力，如图10所示的BL(x)曲线所示，降低失真风险。
如图10所示，BL曲线左右完全对称，且Xmax位置(音圈32的最大位移)处的BL相比平衡位置衰减10％以内，从而实现超线性BL(x)设计。可以理解地，图10所示的横轴表示位移，单位为mm，纵轴表示BL，单位为Wb/m。
而且，相较于常规DPS扬声器而言，本发明发声模组200中多个磁路单元20之间及多个振动单元30之间均沿水平方向分布，在壳体10的竖向厚度上不占用过多的空间，且所有振动单元30在上下振动时仅需要上振动空间和下振动空间这两个振动空间即可，不额外占用发声模组200的厚度空间，利于实现薄型化设计，从而在同等厚度下，本发明发声模组200可以使磁路单元20加厚设计，最大化利用产品及整机厚度空间，提高了磁路单元20的强度，降低碎裂风险和跌落损坏风险，从而降低物料成本，提高产品可靠性和良率，实现量产。
并且，本发明发声模组200的第一工作状态可为受话器状态(RCV状态)，在受话器状态下，至少一个振动单元30向外辐射第一相位的声波，剩余的至少一个振动单元30向外辐射第二相位的声波，第一相位和第二相位为相反相位，可形成偶极子效应，具有远场消音的技术效果，提升通话私密性。
进一步地，在第一工作状态下，相邻的两个振动组件分别向外辐射第一相位和第二相位的声波，其中，各振动组件包括一个振动单元30或相邻的多个振动单元30，且相邻的两个振动组件中的振动单元30的数量相同或接近。
具体地，将多个振动单元30划分为不同的振动组件，振动组件的数量至少为两个，且各振动组件包括一个振动单元30或者相邻的多个振动单元30。相邻的两个振动组件中的振动单元30的数量相同或接近，可以理解地，相邻的两个振动组件中的振动单元30的数量接近是指两个振动组件的振动单元30的数量差等于一或等于二，总之相邻的两个振动单元30的数量相差不太大即可，避免向外辐射相反相位的振动单元30的数量失衡而影响通话私密性。
为方便描述，将第一相位用“+”表示，第二相位用“－”表示。
在受话器状态下，振动单元30的数量为两个时，辐射方式分别为+、－；
振动单元30的数量为三个时，辐射方式分别为+、+、－/+、－、－/+、－、+/－、+、－；
振动单元30为四个时，辐射方式分别为+、+、－、－/+、－、+、－等；
振动单元30的数量为五个时，辐射方式分别为+、+、+、－、－/+、+、－、－、+/+、－、+、－、+等；
振动单元30的数量为六个时，辐射方式分别为+、+、+、－、－、－/+、+、－、－、+、+/+、－、+、－、+、－等。
依次类推，使得多个振动单元30向外辐射声波的相位方式可以多样化和灵活化，满足多种需求。
在一实施例中，在第二工作状态下，多个振动单元30向外辐射相同相位的声波，其中，第二工作状态不同于第一工作状态。
具体地，本发明发声单体100的第二工作状态可为扬声器状态(SPK状态)，在扬声器状态下，所有振动单元30向外辐射相同相位的声波，相同相位的声波可以使声波叠加，提升重放效果，拓宽声重放频带。
如图2、图4至图8、图13至图14所示，在一实施例中，各振动单元30中，第一音圈32部和第二音圈32部由同一根导线绕制而成，振动板311包括与音圈32内壁连接的内振动板3111及与音圈32外壁连接的外振动板3112；在该实施例中，第一音圈32部和第二音圈32部为一体式设计，由同一根导线绕制而成，呈单音圈32设计，简单方便。振动板311则被音圈32隔开为内振动板3111和外振动板3112，其中，内振动板3111与音圈32内壁连接，外振动板3112与音圈32外壁连接，实现音圈32与振膜31的装配。
如图2、图4、图6、图8、图14所示，第一音圈32部和第二音圈32部由同一根导线绕制而成，振动板311包括与音圈32内壁连接的内振动板3111及与音圈32外壁连接的外振动板3112，内振动板3111包括内平板部3114以及由内平板部3114的外边缘弯折延伸并与音圈32内壁连接的内折弯部，且/或，外振动板3112包括外平板部3116以及由外平板部3116的内边缘弯折延伸并与音圈32外壁连接的外折弯部。在该实施例中，第一音圈32部和第二音圈32部为一体式设计，由同一根导线绕制而成，呈单音圈32设计，简单方便。振动板311则被音圈32隔开为内振动板3111和外振动板3112，其中，内振动板3111与音圈32内壁连接，外振动板3112与音圈32外壁连接，实现音圈32与振膜31的装配。
其中，内振动板3111包括内平板部3114和内弯折部31153123，内弯折部31153123由内平板部3114的外边缘沿第一方向，即沿竖向弯折延伸形成，扩大与音圈32内壁之间的连接面积，提高内振动板3111与音圈32的装配稳定性。外振动板3112包括外平板部3116和外折弯部，外折弯部由外平板部3116的内边缘沿第一方向，即沿竖向弯折延伸形成，扩大与音圈32外壁之间的连接面积，提高外振动板3112与音圈32的装配稳定性。
或者，第一音圈32部和第二音圈32部由同一根导线绕制而成，振动板311包括与音圈32内壁连接的内振动板3111及与音圈32外壁连接的外振动板3112，第二音圈32部的一侧与外部电路连接。在该实施例中，第一音圈32部和第二音圈32部为一体式设计，由同一根导线绕制而成，呈单音圈32设计，简单方便。振动板311则被音圈32隔开为内振动板3111和外振动板3112，其中，内振动板3111与音圈32内壁连接，外振动板3112与音圈32外壁连接，实现音圈32与振膜31的装配。而且，第二音圈32部的一侧与外部电路连接，实现音圈32与外部电路的导通。
如图3、图11、图12所示，在再一实施例中，第一音圈32部和第二音圈32部分别由不同的导线独立绕制形成。在该实施例中，第一音圈32部和第二音圈32部为分体式设计，分别由不同的导线独立绕制形成，呈双音圈32设计，振动板311则不会被音圈32隔开，振动板311为一体式振动板311。
如图4所示，在其他实施例中，各所述振动单元30中，第一音圈32部和第二音圈32部由同一根导线绕制而成，振动板311包括与音圈32内壁连接的内振动板3111及与音圈32外壁连接的外振动板3112；振膜31还包括防水膜313，内振动板3111和外振动板3112之间连接有防水膜313，防水膜313贴设并包绕于第二音圈32部朝向第二磁组件22的一端。
在该实施例中，第一音圈32部和第二音圈32部为一体式设计，由同一根导线绕制而成，呈单音圈32设计，简单方便。振动板311则被音圈32隔开为内振动板3111和外振动板3112，其中，内振动板3111与音圈32内壁连接，外振动板3112与音圈32外壁连接，实现音圈32与振膜31的装配。
而且，振膜31还包括防水膜313，内振动板3111和外振动板3112之间通过防水膜313连接，防水膜313贴设在第二音圈32部的上端，起到防水的作用，提高发声单体100的防水性能和等级。
本发明音圈32采用单音圈32设计或双音圈32设计可根据实际需求灵活设计。如图2至图7、图12至图15所示，相邻两个振动单元30中，两个折环312之间相互连接为一体，方便制作。
如图8所示，在一实施例中，各振动单元30中，折环312包括沿第二方向依次连接的第一连接部3124、形变部3125和第二连接部3126，第一连接部3124连接振动板311，第二连接部3126连接壳体10，形变部3125朝向第二磁组件22所在侧凹陷设置。
在该实施例中，折环312为水平折环312，折环312包括沿水平方向依次连接的第一连接部3124、形变部3125和第二连接部3126，其中，第一连接部3124连接振动板311，第二连接部3126连接壳体10，实现与壳体10的装配。形变部3125朝下凹陷设置，利于支持和导向振膜31的竖向振动。将折环312设计为水平折环312，结构简单，且可以更好地引导振膜31上下运动，保持振动的线性，减少非轴向的偏移，进一步减少失真。
如图6所示，在另一实施例中，各振动单元30中，折环312沿第一方向的两端分别为第一端3121和第二端3122，第一端3121与振动板311的边缘连接，第二端3122与壳体10或第二磁组件22连接，且第一端3121与第一磁组件21同侧设置，第二端3122与第二磁组件22同侧设置。
具体地，折环312沿上下方向的两端分别为第一端3121和第二端3122，其中，第一端3121连接振动板311，第二端3122连接壳体10或第二磁组件22，第一端3121与第一磁组件21同侧设置，第二端3122与第二磁组件22同侧设置，使得折环312在竖直方向上有一定的高度，即，折环312呈在竖直方向上有延展的竖直折环312，减少折环312在水平方向上的占用空间，扩展了振动板311在发声单体100的水平方向上的尺寸，提高了发声单体100的有效振动面积(SD)，提高发声单体100的灵敏度，且改善了产品的中频性能，使产品的中频性能得到优化。
如图6所示，在一实施例中，折环312包括多个沿第一方向依次连接的弯折部3123，各弯折部3123朝第二方向弯折，且任意相邻的两个弯折部3123的弯折方向相反，以使折环312形成波浪形弯曲结构，沿第一方向位于最外侧的两个弯折部3123分别形成第一端3121和第二端3122。
具体地，折环312包括多个沿上下方向依次连接的弯折部3123，各弯折部3123朝水平方向弯折，且任意相邻的两个弯折部3123的弯折方向相反，使得折环312形成波浪形弯曲结构，其中，沿第一方向位于最外侧的两个弯折部3123分别形成第一端3121和第二端3122，即，位于最上侧的弯折部3123和位于最下侧的弯折部3123分别形成第一端3121和第二端3122。将折环312设计为沿竖直方向设置且沿水平方向多次弯折的波浪形弯曲结构，提高了折环312的延展性，进一步减少折环312在水平方向上的占用空间，从而进一步扩展了振动板311在发声单体100的水平方向上的尺寸，更大程度的提高了发声单体100的有效振动面积，进一步提高了发声单体100的灵敏度及优化了中频性能。
各弯折部3123均呈弧形弯折部3123，且任意相邻的两个弯折部3123平滑过渡连接，提高折环312的平滑连续性，避免应力集中，且更有利于提高折环312的延展性。
在一实施例中，折环312连接于振动板311朝向第二磁组件22的一侧，第二端3122环绕第二磁组件22设置。如图6所示，折环312连接在振动板311朝向第二磁组件22的一侧，即，折环312连接在振动板311的下侧，且第二端3122环绕在第二磁组件22的外侧，结构设计合理。
在一实施例中，第二端3122沿第一方向投影的轮廓尺寸大于第一端3121沿第一方向投影的轮廓尺寸，即，第二端3122沿上下方向投影，投影在水平面上的轮廓尺寸大于第一端3121投影在水平面上的轮廓尺寸。第一端3121和第二端3122均呈环状设置，相对于第一端3121而言，增大了第二端3122的外轮廓尺寸，进一步提高了折环312的延伸性，减少折环312在水平方向上的占用空间，扩展了振动板311在发声单体100的水平方向上的尺寸，从而提高发声单体100的有效振动面积，同时能提高折环312的顺性。
在一实施例中，振动板311的外边缘沿第一方向投影的轮廓位于第二磁组件22沿第一方向的投影的轮廓的外侧，即，振动板311的外边缘投影在水平面上的轮廓位于第二磁组件22投影在水平面上的轮廓的外侧，使得振动板311的外轮廓尺寸较大，提高了发声单体100的有效振动面积。
在一实施例中，振动板311的外边缘沿第一方向投影的轮廓位于第一磁路组件沿第一方向投影的轮廓的外侧，即，振动板311的外边缘投影在水平面上的轮廓位于第一磁组件21投影在水平面上的轮廓的外侧，使得振动板311的外轮廓尺寸较大，提高了发声单体100的有效振动面积。
在一实施例中，振动板311靠近其外边缘的位置朝靠近第一磁组件21的方向弯折延伸形成斜坡结构，第一磁组件21设置有用于避让斜坡结构的避位部。具体地，振动板311靠近其外边缘的位置朝上弯折延伸形成斜坡结构，第一磁组件21的避让部可对斜坡结构进行避让，防止第一磁组件21与振动板311发生干涉。
如图2至图9、图11所示，在一实施例中，第一磁组件21包括沿第二方向设置的第一内磁铁212及第一外磁铁213，第一内磁铁212和第一外磁铁213之间形成第一磁间隙211，第一内磁铁212和第一外磁铁213之间可产生穿过第一磁间隙211的磁感线，以在第一音圈32部通电时使第一音圈32部上下振动来切割磁感线。
第二磁组件22包括沿第二方向设置的第二内磁铁222及第二外磁铁223，第二内磁铁222和第二外磁铁223之间形成第二磁间隙221，第二内磁铁222和第二外磁铁223之间可产生穿过第二磁间隙221的磁感线，以在第二音圈32部通电时使第二音圈32部上下振动来切割磁感线。
在一实施例中，各磁路单元20中，第一内磁铁212和第二内磁铁222的磁极方向相反，第一外磁铁213和第二外磁铁223的磁极方向相反，第一内磁铁212和第一外磁铁213的磁极方向相反。如此设置，第一外磁铁213和第一内磁铁212产生的磁感线之间形成环形闭合的磁回路，第二外磁铁223和第二内磁铁222产生的磁感线之间也形成环形闭合的磁回路，使得经过音圈32的磁力线更多、更密集，驱动力也就更大。
在一实施例中，第一磁间隙211和第二磁间隙221沿第一方向对齐设置，以便于分别位于第一磁间隙211内和第二磁间隙221内的第一音圈32部和第二音圈32部对齐设置，提高振动一致性，避免偏摆。
在一实施例中，第一外磁铁213为环形磁铁，环形磁铁的连续性好，利于提高磁场分布的均匀性。
第一内磁铁212与第二内磁铁222相对设置，第一外磁铁213与第二外磁铁223相对设置，利于第一磁间隙211和第二磁间隙221对齐设置，以便于分别位于第一磁间隙211内和第二磁间隙221内的第一音圈32部和第二音圈32部对齐设置，提高振动一致性，避免偏摆。
在一实施例中，第一内磁铁212沿第二方向的尺寸与第二内磁铁222沿第二方向的尺寸相同，第一外磁铁213沿第二方向的尺寸小于第二外磁铁223沿第二方向的尺寸。具体地，第一内磁铁212和第二内磁铁222的形状匹配，且第一内磁铁212水平方向的尺寸与第二内磁铁222水平方向的尺寸相同，利于提高磁场分布的均匀性，进一步地，第一外磁铁213沿水平方向的尺寸小于第二外磁铁223沿水平方向的尺寸，即，第一外磁铁213的外边缘尺寸小于第二外磁铁223的外边缘尺寸，相较于第二外磁铁223而言，对第一外磁铁213的外边缘进行缩窄设计，避免第一外磁铁213与振膜31发生干涉。
如图15所示，在一实施例中，各振动单元30中，折环312的表面设有导电层3127，音圈32与导电层3127电连接，壳体10上注塑有导电端子12，导电层3127和导电端子12通过导电胶连接，使得音圈32通过导电层3127与导电端子12电连接；
具体地，折环312朝向第二音圈32部的一侧表面设有导电层3127，即折环312的下侧表面设置有导电层3127，第二音圈32部与导电层3127连接，而导电层3127通过导电胶与壳体10上的导电端子12连接，导电端子12与外部电路电连接，从而使得第二音圈32部通过导电层3127与外部电路电连接，实现第二音圈32部与外部电路之间的导通。导电端子12注塑于壳体10，提高了壳体10的集成化和紧凑性。且折环312表面的导电层3127形成导电路径3128，使得折环312还具有导电性，结构集成化高。
在另一实施例中，各所述振动单元30还包括定心支片40，定心支片40为导电的定心支片40，第二音圈32部通过定心支片40与外部电路连接。
如图4至图7所示，定心支片40设置于第二音圈32部远离振膜31的一端，即，定心支片40设置于第二音圈32部的底端，定心支片40包括内固定部41、弹臂部42和外固定部43，其中，内固定部41、弹臂部42和外固定部43沿第二方向，即水平方向由内至外依次连接，外固定部43与壳体10连接，而内固定部41与第二音圈32部连接，弹臂部42连接内固定部41和外固定部43，弹臂部42具有弹性，使得内固定部41可随着第二音圈32部振动。定心支片40对音圈32起到定心以及支撑作用，防止音圈32发生偏振，提高音圈32的振动稳定性。第二磁组件22具有避让空间224，避让空间224能避让与其对应的定心支片40，具体避让定心支片40的弹臂部42，布局合理，定心支片40与磁路单元20互不干涉。并且，第二音圈32部的一侧与外部电路连接，实现音圈32与外部电路的导通。
并且，各振动单元30中，定心支片40为导电的定心支片40，第二音圈32部通过定心支片40与外部电路连接，从而实现第二音圈32部与外部电路之间的导通。且定心支片40可以导电，省略了其他导电件的设置，集成化程度高，便于简化结构。
如图2和图3所示，发声单体100还包括壳体10，壳体10具有多个沿第二方向分布的容纳空间11，各容纳空间11对应收容有一磁路单元20，壳体10包括塑胶支架13以及沿第一方向分设于塑胶支架13两侧的第一金属板14和第二金属板15，塑胶支架13、第一金属板14和第二金属板15围合形成容纳空间11，第一磁组件21设置于第一金属板14，第二磁组件22设置于第二金属板15。第一金属板14嵌设于第一模组壳52，第二金属板15嵌设于第二模组壳53。
发声单体100的壳体10具有沿第二方向，即水平方向分布的多个容纳空间11，各容纳空间11内对应收容有一磁路单元20和一振动单元30，使得多个磁路单元20之间及多个振动单元30之间均沿水平方向分布。
具体地，第一金属板14和第二金属板15分设于塑胶支架13的上下两侧，壳体10的塑胶支架13、第一金属板14和第二金属板15围合形成容纳空间11，结构设计合理。而且，第一磁组件21设置于第一金属板14，第二磁组件22设置于第二金属板15，实现了壳体10与磁路单元20之间的装配。并且，塑胶支架13上注塑有导电端子12，提高了塑胶支架13的集成化和紧凑性。
第一模组壳52和第二模组壳53可均为塑胶壳，第一金属板14嵌设于第一模组壳52，第二金属板15嵌设于第二模组壳53，结构紧凑。
在发声模组200装配过程中，第一模组壳52可与第一支架131一起来料，第二模组壳53可与第二支架132一体来料，提高装配效率和便利性。
进一步地，第一金属板14和/或第二金属板15为导磁材质制件，使得第一金属板14和/或第二金属板15具有导磁能力，利于对磁力线进行修正。
如图2、图3、图5和图7所示，在一实施例中，塑胶支架13包括第一支架131和第二支架132，第一支架131和第二支架132沿第一方向，即沿上下方向分体式设计，便于拆装。第一支架131、第二支架132、第一金属板14和第二金属板15围合形成容纳空间11，第一支架131环绕于第一磁组件21外，第二支架132环绕于第二磁组件22外，第二支架132上注塑有导电端子12，结构设计合理。
在一实施例中，出声孔54位于外壳50侧壁同一侧。可以理解地，多个振动单元30对应有多个出声孔54并从对应的出声孔54出声，多个出声孔54位于外壳50侧壁的同一侧，利于制作，且设计合理，实现发声模组200在同一侧出声。
在一实施例中，各振动单元30中，第一音圈32部和第二音圈32部由同一根导线绕制而成，振动板311包括与音圈32内壁连接的内振动板3111及与音圈32外壁连接的外振动板3112；在该实施例中，第一音圈32部和第二音圈32部为一体式设计，由同一根导线绕制而成，呈单音圈32设计，简单方便。振动板311则被音圈32隔开为内振动板3111和外振动板3112，其中，内振动板3111与音圈32内壁连接，外振动板3112与音圈32外壁连接，实现音圈32与振膜31的装配。
第一内磁铁212和第二内磁铁222的磁极方向相反，如图20所示，内振动板3111具有导磁部3113，在振动过程中，由于导磁部3113的作用，内振动板3111可受到第一磁组件21和第二磁组件22的吸力，具体地，内振动板3111向靠近第一磁组件21的方向振动时，第一磁组件21和第二磁组件22对导磁部3113的吸力的合力指向第一磁组件21，利于辅助内振动板3111向上振动，内振动板3111向靠近第二磁组件22的方向振动时，第一磁组件21和第二磁组件22对导磁部3113的吸力的合力指向第二磁组件22，利于辅助内振动板3111向下振动。由此，导磁部3113的设计可辅助内振动板3111振动，提高发声效果。
在一实施例中，内振动板3111为导磁板件，以形成导磁部3113，即，内振动板3111本身为具有导磁性的导磁板件，形成导磁部3113，无需额外设置其他导磁部3113，结构简单。
在另一实施例中，内振动板3111的内部嵌设有导磁件，以形成导磁部3113。将导磁件嵌设于内振动板3111内，结构一致性好且紧凑。
在又一实施例中，内振动板3111沿第一方向的至少一侧设置有导磁件，以形成导磁部3113。比如，内振动板3111的上侧设置有导磁件。又比如，内振动板3111的下侧设置有导磁件，如图20所示。还比如，内振动板3111的上下两侧均设置有导磁件。
在再一实施例中，内振动板3111沿第一方向的至少一侧表面涂覆有导磁材料，以形成导磁部3113。比如，内振动板3111的上侧表面涂覆有导磁材料。又比如，内振动板3111的下侧表面涂覆有导磁材料。还比如，内振动板3111的上下两侧表面均涂覆有导磁材料。
本发明导磁部3113的形成以及位置可以根据实际需求设置，且设置方式多样，灵活性高。
在一实施例中，容纳空间11的数量为两个，磁路单元20和振动单元30的数量均与容纳空间11的数量一致且一一对应设置。
容纳空间11的数量可根据实际需求灵活设置，本实施例将容纳空间11的数量设置为两个，不至过多，利于实现发声单体100的小型化设计。
并且，将容纳空间11的数量设置为两个，对应地，磁路单元20和振动单元30的数量均为两个，各容纳空间11内设置有一磁路单元20和一振动单元30，两个容纳空间11可沿音圈32的短轴边324方向并排设置，可以理解地，短轴边324的尺寸较短，长轴边323的尺寸较长，短轴边324相较于长轴边323占用空间小，将两个容纳空间11沿音圈32的短轴边324方向并排设置，使得壳体10的尺寸不至过长，结构设计合理。
在一实施例中，后腔512填充有吸音材料，第二模组壳53开设有填充吸音材料的填充口，第二模组壳53还设置有用于覆盖填充口的阻尼件。后腔512填充吸音材料，可调整发声模组200的声学性能。第二模组壳53开设有填充口，实现吸音材料填充于后腔512内，在填充完毕后，阻尼件将填充口覆盖，避免吸音材料泄露。
在一实施例中，第一支架131可采用一体式设计或分体式设计，一体式设计的第一支架131便于制作，省略装配间隙及装配误差，结构紧凑，分体式设计的第一支架131便于拆装，灵活性高。第一支架131采用分体式设计时，各容纳空间11对应设置有一第一支架131。
第二支架132可采用一体式设计或分体式设计，一体式设计的第二支架132便于制作，省略装配间隙及装配误差，结构紧凑，分体式设计的第二支架132便于拆装，灵活性高。第二支架132采用分体式设计时，各容纳空间11对应设置有一第二支架132。
多个振动单元30可分别采用独立的后腔512或者共用后腔512，具体可根据实际情况灵活设置。
本发明还提出一种电子设备，包括设备外壳及上述的发声模组。该电子设备中发声模组的具体结构参照上述实施例，由于本电子设备采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (14)

  1. 一种发声模组，其特征在于，所述发声模组包括：
    外壳，所述外壳包括沿第一方向设置的第一模组壳和第二模组壳，所述第一模组壳和所述第二模组壳围合形成容纳腔；
    发声单体，所述发声单体收容于所述容纳腔内并与所述外壳之间形成前腔和后腔；
    所述发声单体包括：
    磁路系统，所述磁路系统包括多个沿第二方向分布的磁路单元，各所述磁路单元包括沿第一方向间隔设置的第一磁组件和第二磁组件，所述第二方向与所述第一方向相互垂直，所述第一磁组件具有第一磁间隙，所述第二磁组件具有第二磁间隙；
    振动系统，所述振动系统包括多个振动单元，各所述磁路单元对应于一所述振动单元，各所述振动单元设置于对应的所述磁路单元的所述第一磁组件和所述第二磁组件之间，各所述振动单元包括振膜和与所述振膜连接的音圈，所述振膜包括振动板和沿所述第二方向环设于所述振动板的折环，所述音圈包括位于振动板沿所述第一方向的两侧的第一音圈部和第二音圈部，所述第一音圈部位于对应的所述磁路单元的所述第一磁间隙，所述第二音圈部位于对应的所述磁路单元的所述第二磁间隙；
    其中，在第一工作状态下，至少一个所述振动单元向外辐射第一相位的声波，剩余的至少一个所述振动单元向外辐射第二相位的声波，所述第一相位和所述第二相位为相反相位，且所述外壳对应各所述振动单元开设有出声孔，所述出声孔与所述前腔连通，各所述振动单元的声波经对应的所述出声孔向外界辐射。
  2. 如权利要求1所述的发声单体，其特征在于，
    在第一工作状态下，相邻的两个振动组件分别向外辐射所述第一相位和所述第二相位的声波，其中，各所述振动组件包括一个所述振动单元或相邻的多个所述振动单元，且相邻的两个所述振动组件中的所述振动单元的数量相同或接近。
  3. 如权利要求1所述的发声模组，其特征在于，在第二工作状态下，多个所述振动单元向外辐射相同相位的声波，其中，所述第二工作状态不同于所述第一工作状态。
  4. 如权利要求1所述的发声模组，其特征在于，各所述振动单元中，
    所述第一音圈部和所述第二音圈部由同一根导线绕制而成，所述振动板包括与所述音圈内壁连接的内振动板及与所述音圈外壁连接的外振动板；
    或者，所述第一音圈部和所述第二音圈部由同一根导线绕制而成，所述振动板包括与所述音圈内壁连接的内振动板及与所述音圈外壁连接的外振动板，所述内振动板包括内平板部以及由所述内平板部的外边缘弯折延伸并与所述音圈内壁连接的内折弯部，且/或，所述外振动板包括外平板部以及由所述外平板部的内边缘弯折延伸并与所述音圈外壁连接的外折弯部；
    或者，所述第一音圈部和所述第二音圈部由同一根导线绕制而成，所述振动板包括与所述音圈内壁连接的内振动板及与所述音圈外壁连接的外振动板，所述第二音圈部的一侧与外部电路连接；
    或者，所述第一音圈部和所述第二音圈部分别由不同的导线独立绕制形成。
  5. 如权利要求1所述的发声模组，其特征在于，各所述振动单元中，所述折环包括沿所述第二方向依次连接的第一连接部、形变部和第二连接部，所述第一连接部连接所述振动板，所述第二连接部连接壳体，所述形变部朝向所述第二磁组件所在侧凹陷设置；
    或者，各所述振动单元中，所述折环沿所述第一方向的两端分别为第一端和第二端，所述第一端与所述振动板的边缘连接，所述第二端与所述壳体或所述第二磁组件连接，且所述第一端与所述第一磁组件同侧设置，所述第二端与所述第二磁组件同侧设置。
  6. 如权利要求1所述的发声模组，其特征在于，
    所述第一磁组件包括沿所述第二方向设置的第一内磁铁及第一外磁铁，所述第一内磁铁和所述第一外磁铁之间形成所述第一磁间隙；
    所述第二磁组件包括沿所述第二方向设置的第二内磁铁及第二外磁铁，所述第二内磁铁和所述第二外磁铁之间形成所述第二磁间隙。
  7. 如权利要求6所述的发声模组，其特征在于，各所述磁路单元中，
    所述第一内磁铁和第二内磁铁的磁极方向相反，所述第一外磁铁和所述第二外磁铁的磁极方向相反，所述第一内磁铁和所述第一外磁铁的磁极方向相反；
    且/或，所述第一磁间隙和所述第二磁间隙沿所述第一方向对齐设置；
    且/或，所述第一外磁铁为环形磁铁；
    且/或，所述第一内磁铁与所述第二内磁铁相对设置，所述第一外磁铁与所述第二外磁铁相对设置。
  8. 如权利要求1所述的发声模组，其特征在于，
    各所述振动单元中，所述折环的表面设有导电层，所述音圈与所述导电层电连接，所述壳体上注塑有导电端子，所述导电层和所述导电端子通过导电胶连接，使得所述音圈通过所述导电层与所述导电端子电连接；
    或者，各所述振动单元还包括定心支片，所述定心支片为导电的定心支片，所述第二音圈部通过所述定心支片与外部电路连接。
  9. 如权利要求1～8中任一项所述的发声模组，其特征在于，
    所述发声单体还包括壳体，所述壳体具有多个沿所述第二方向分布的容纳空间，各所述容纳空间对应收容有一所述磁路单元，所述壳体包括塑胶支架以及沿所述第一方向分设于所述塑胶支架两侧的所述第一金属板和所述第二金属板，所述塑胶支架、所述第一金属板和所述第二金属板围合形成所述容纳空间，所述第一磁组件设置于所述第一金属板，所述第二磁组件设置于所述第二金属板；
    所述第一金属板嵌设于所述第一模组壳，所述第二金属板嵌设于所述第二模组壳。
  10. 如权利要求9所述的发声模组，其特征在于，
    所述第一金属板和/或所述第二金属板为导磁材质制件；
    且/或，所述出声孔位于所述外壳侧壁同一侧。
  11. 如权利要求8所述的发声模组，其特征在于，
    各所述振动单元中，所述第一音圈部和所述第二音圈部由同一根导线绕制而成，所述振动板包括与所述音圈内壁连接的内振动板及与所述音圈外壁连接的外振动板；所述第一内磁铁和第二内磁铁的磁极方向相反，所述内振动板具有导磁部。
  12. 如权利要求11所述的发声模组，其特征在于，
    所述内振动板为导磁板件，以形成所述导磁部；
    或者，所述内振动板的内部嵌设有导磁件，以形成所述导磁部；
    或者，所述内振动板沿所述第一方向的至少一侧设置有导磁件，以形成所述导磁部；
    或者，所述内振动板沿所述第一方向的至少一侧表面涂覆有导磁材料，以形成所述导磁部。
  13. 如权利要求1～8中任一项所述的发声模组，其特征在于，
    所述后腔填充有吸音材料，所述第二模组壳开设有填充吸音材料的填充口，所述第二模组壳还设置有用于覆盖所述填充口的阻尼件。
  14. 一种电子设备，其特征在于，所述电子设备包括设备外壳和如权利要求1～13中任意一项所述的发声模组。
PCT/CN2025/078429 2024-06-27 2025-02-21 发声模组和电子设备 Pending WO2026001023A1 (zh)

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