CN116647793A - Speaker and electronic equipment - Google Patents
Speaker and electronic equipment Download PDFInfo
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- CN116647793A CN116647793A CN202210138398.XA CN202210138398A CN116647793A CN 116647793 A CN116647793 A CN 116647793A CN 202210138398 A CN202210138398 A CN 202210138398A CN 116647793 A CN116647793 A CN 116647793A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1016—Earpieces of the intra-aural type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; 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
- H04R9/045—Mounting
Abstract
The embodiment of the application provides a loudspeaker and electronic equipment, wherein a plurality of groups of conductive structures are arranged in the side wall of a basin frame, and the second end of a conductive plug-in unit in each group of conductive structures is exposed out of the outer side wall of the basin frame, so that when a plurality of sounding units are assembled in the basin frame, pins of each sounding unit can be led out to the outer side wall of the basin frame through the conductive structures only by electrically connecting each sounding unit with the first end of the conductive plug-in unit in the corresponding conductive structure, an external circuit only needs to be electrically connected with the second end of the conductive plug-in unit in the conductive structure, the corresponding sounding unit can be powered, the structure that the pins of each sounding unit are led out to the outside of the loudspeaker is simplified, and in addition, the first end of each conductive plug-in unit in at least one group of conductive structures is exposed out of the outer surface of the side wall of the basin frame, so that the electric connection procedure between the first end of the conductive plug-in the conductive structures and the corresponding sounding units is more convenient and reliable.
Description
Technical Field
The embodiment of the application relates to the technical field of electronic devices, in particular to a loudspeaker and electronic equipment.
Background
The loudspeaker is a necessary device in electronic equipment such as earphone, bluetooth glasses and the like, and is used for converting received electric signals into acoustic signals. The sound quality is an important index for measuring electronic equipment such as headphones, and an important factor for determining the sound quality is the design of a loudspeaker.
In order to improve the sound quality of electronic equipment, currently, a speaker in the electronic equipment adopts a multi-unit design so as to widen the bandwidth of the speaker and optimize the medium-high frequency sound quality. For example, the speaker may include a plurality of sound emitting units, which may be stacked, each of which includes a vibration assembly that is energized to vibrate to push air in the interior of the sound emitting unit to vibrate, thereby emitting sound. The pins of the vibration components of each sound generating unit are led out of the loudspeaker and are respectively and electrically connected with an external circuit, so that the external circuit electrifies the vibration components of each sound generating unit.
However, the structure in which the pins of each sound emitting unit inside the speaker are led out to the outside of the speaker is complicated, so that the assembly process of the speaker is complicated.
Disclosure of Invention
The embodiment of the application provides a loudspeaker and electronic equipment, which simplify the structure that each pin in the loudspeaker is led out to the outside of the loudspeaker, thereby simplifying the assembly process of the loudspeaker.
In one aspect, an embodiment of the present application provides a speaker, including a frame and a plurality of sound generating units, where the frame has a side wall, at least a portion of the plurality of sound generating units are located in an inner cavity surrounded by the side wall of the frame, and a plurality of groups of conductive structures disposed at intervals are located in the side wall of the frame, each group of conductive structures corresponds to one sound generating unit, each group of conductive structures includes two conductive inserts, a first end of each conductive insert is electrically connected with the corresponding sound generating unit, and a second end of each conductive insert is exposed to an outer surface of the side wall of the frame, where in at least one group of conductive structures, the first end of each conductive insert is exposed to the outer surface of the side wall of the frame.
According to the loudspeaker provided by the embodiment of the application, the plurality of groups of conductive structures are arranged in the side wall of the basin frame, the first ends of the two conductive plug-ins in each group of conductive structures are electrically connected with the corresponding sounding units, and the second ends of the two conductive plug-ins in each group of conductive structures are exposed out of the outer surface of the side wall of the basin frame. In addition, the arrangement of the conductive structure enables each sounding unit to be modularized, each sounding unit can be assembled in the basin frame at one time as a module, and each sounding unit is electrically connected with the first end of the conductive plug-in unit in the corresponding conductive structure, so that the assembly of the loudspeaker can be completed, and the assembly efficiency of the loudspeaker in the embodiment of the application is improved. In addition, the first end of each conductive plug-in at least one group of conductive structures is exposed out of the outer surface of the side wall of the basin frame, so that the electric connection procedure between the first end of each conductive plug-in each conductive structure and the corresponding sounding unit is more convenient and reliable, and the electric connection efficiency between the sounding unit and the corresponding conductive structure is improved.
In one possible implementation, the plurality of sound generating units includes a first sound generating unit, the plurality of groups of conductive structures includes a first conductive structure, the first conductive structure includes two first conductive inserts, a first end of each first conductive insert is exposed at an outer surface of a side wall of the basin frame and is electrically connected with the first sound generating unit, and a second end of each first conductive insert is exposed at the outer surface of the side wall of the basin frame.
The first ends of the two first conductive plug-ins in the first conductive structure are exposed out of the outer surface of the side wall of the basin frame so as to be electrically connected with the first sound generating unit, so that the electric connection procedure between the first sound generating unit and each first conductive plug-in of the first conductive structure is simpler and more controllable.
In one possible implementation, the speaker further comprises: the first sound generating unit at least comprises a first voice coil, and the first voice coil and the circuit board are laminated along the height direction of the basin frame;
in the first conductive structure, the first end of each first conductive plug-in is electrically connected with the first voice coil through the circuit board, so that an electrical connection procedure between the first voice coil and the first conductive plug-in is more convenient and reliable.
In a feasible implementation manner, the circuit board comprises a first body part and two first extending parts arranged at the outer edge of the first body part, the first voice coil and the first body part are arranged in a lamination mode along the height direction of the basin frame, the first body part is electrically connected with the first voice coil, the two first extending parts are positioned on the outer surface of the side wall of the basin frame, and the two first extending parts are respectively electrically connected with the first ends of the corresponding first conductive plug-ins, on one hand, the two pins of the first voice coil are respectively electrically connected with the corresponding first conductive plug-ins through the circuit board, on the other hand, the arrangement of the two first extending parts in the circuit board enables connection between the circuit board and the first ends of the first conductive plug-ins to be more convenient and reliable, the first body part is arranged on the first voice coil in a lamination mode, the first extending parts can be attached to the outer surface of the side wall of the basin frame, the size of the inside the loudspeaker occupied by the circuit board is saved, and the miniaturization of the loudspeaker can be ensured.
In one possible implementation, in the first conductive structure, a first end of each first conductive insert has a first conductive terminal and a second end of each first conductive insert has a first conductive pin;
each first extension part is provided with a first mounting hole, the first conductive terminal penetrates into the first mounting hole and is electrically connected with the hole wall of the first mounting hole,
by providing the first conductive terminals at the first end of each first conductive insert, the electrical connection between the first extension and the first end of the first conductive insert is made more convenient and reliable. In addition, through set up first mounting hole on first extension to wear to locate in this first mounting hole with first conductive terminal, so that the electricity between first extension and the first conductive terminal is connected, for example, when first extension and the welding of first conductive terminal, can carry out the soldering along the annular clearance between the inner wall of first mounting hole and the lateral wall of first conductive terminal, make the welding between first extension and the first conductive terminal more simple and fast, and improved the electric connection reliability between first extension and the first conductive terminal. In addition, through wearing to locate first conductive terminal in the first mounting hole of first extension, play the positioning action to first extension, first extension location is on first conductive terminal promptly, and the welding of first extension and first conductive terminal of being convenient for need not additionally to set up location structure to the welding process between circuit board and the first conductive terminal has also been simplified to the structure of speaker.
In one possible implementation manner, the first sound generating unit is a planar membrane unit, the first sound generating unit comprises a first vibrating diaphragm, and the first voice coil, the circuit board and the first vibrating diaphragm are sequentially stacked along the height direction of the basin frame.
Through setting up first sound unit into the plane membrane unit for this first sound unit can be responsible for the sound production of intermediate frequency or high frequency, in addition, through with first voice coil loudspeaker voice coil, circuit board and first vibrating diaphragm range upon range of setting in proper order along basin frame direction of height, with the structural stability of guaranteeing the circuit board in first vibration subassembly, thereby guarantees the electricity connection reliability between circuit board and the first voice coil loudspeaker voice coil.
In one possible implementation, the first diaphragm and the circuit board are both located outside the frame, and the first body of the first diaphragm and the circuit board is located at one end of the frame near the first voice coil.
The first vibrating diaphragm and the circuit board are arranged outside the basin frame, so that the space inside the basin frame is saved, the thickness of the magnetic circuit system such as the first magnetic piece and the second magnetic piece can be increased, the magnetic field intensity of the magnetic circuit system is enhanced, and the sensitivity of the sounding unit such as the first sounding unit is improved.
In one possible implementation manner, the plurality of sound generating units further include a second sound generating unit, the second sound generating unit is located at a side of the first voice coil of the first sound generating unit facing away from the circuit board, and the second sound generating unit includes a second voice coil;
The multiunit conductive structure still includes the second conductive structure, the second conductive structure includes two second conductive plug-ins, the first end of every second conductive plug-in is located the basin frame and is connected with the second voice coil electricity, the second end of every second conductive plug-in all has the second conductive contact pin, the second conductive contact pin exposes in the surface of basin frame lateral wall, that is, the second voice coil draws forth the surface to basin frame lateral wall through the second conductive plug-in, so that the second voice coil is connected with the electricity of external circuit, for example, the external circuit accessible is connected with the second conductive contact pin electricity of exposing at basin frame lateral wall surface, alright be connected with the second voice coil realization electricity, the equipment process between second voice coil and the external circuit has been simplified, also make the connection between second voice coil and the external circuit more reliable, thereby the electric connection reliability between second voice coil and the external circuit has been improved. In addition, through setting up the electrically conductive plug-in components of second on the basin frame for second sound production unit modularization, for example, when the assembly, only need assemble the second sound production unit in the basin frame after, then with the pin of second voice coil loudspeaker coil in the second sound production unit with the first end electricity of the electrically conductive plug-in components of second, just accomplish the equipment of second sound production unit, follow-up only need with the second conductive contact pin electricity connection of external circuit and the electrically conductive plug-in components second end, alright circular telegram to the second voice coil loudspeaker coil in the second sound production unit, simplified the assembly line process of second sound production unit, improved the packaging efficiency of speaker.
In a possible implementation manner, the outer surface of the side wall of the basin frame is provided with a first wiring area, the first wiring area is located between two first conductive terminals of the first conductive structure, two first conductive pins of the first conductive structure and two second conductive pins of the second conductive structure are located in the first wiring area, so that the outside can be directly welded with the two first conductive pins and the two second conductive pins in the first wiring area by only one circuit board such as a flexible circuit board, and current can be introduced into the first voice coil and the second voice coil, so that the electric connection structure between positive pins and negative pins of the first voice coil and the second voice coil and an external circuit is simplified, and the electric connection procedure between two sound generating units of the loudspeaker and the external circuit is simplified, thereby facilitating the whole machine application of the loudspeaker.
In one possible implementation manner, the two first conductive pins are arranged in a first row, the two second conductive pins are arranged in a second row, and the first row and the second row are arranged at intervals along the height direction of the basin frame, so that the occupied size of the two first conductive pins and the two second conductive pins on the first wiring area along the circumferential direction of the basin frame can be reduced, the arrangement size of the first wiring area on the circumferential direction of the basin frame can be reduced when the loudspeaker is arranged, space is saved for other areas of the basin frame, in addition, the width of an external circuit such as a circuit board can be reduced, the cost is saved, the space inside the electronic equipment occupied by the external circuit is saved, and in addition, the external circuit such as a flexible circuit board is convenient to be welded with the two first conductive pins and the two second conductive pins respectively, so that the assembly efficiency of the loudspeaker and the external circuit in the embodiment of the application is improved.
In one possible implementation, the surface of the first connection area is an inclined surface, and the distance between the inclined surface and the inner surface of the side wall of the basin frame gradually increases in the direction from one end of the basin frame to the other end; the outer edge of the first wiring area is more open, the blocking of the structure of the basin frame to the outer periphery of the first wiring area is reduced, and an external circuit such as a flexible circuit board cannot be limited by the space of the first wiring area, so that the circuit board can be welded on the first conductive contact pin and the second conductive contact pin of the first wiring area conveniently.
In one possible implementation manner, the second sound generating unit is a moving coil unit, the first sound generating unit comprises a first magnetic part, the first magnetic part comprises a first side and a second side which are opposite in the height direction of the basin frame, and the first voice coil is positioned on the first side;
the second sound generating unit comprises a second magnetic part, the second magnetic part comprises a third side and a fourth side which are opposite in the height direction of the basin frame, the second magnetic part is positioned on the second side, and the second voice coil is positioned on the fourth side;
at least part of the first magnetic pieces on the second side face at least part of the second magnetic pieces on the third side, and at least part of the first magnetic pieces on the second side are opposite to at least part of the second magnetic pieces on the third side in magnetism, so that the first magnetic pieces and the second magnetic pieces jointly form a common magnetic circuit system of the first sound generating unit and the second sound generating unit, the first voice coil of the first vibration assembly and the second voice coil of the second vibration assembly are used for vibrating under the action of a magnetic circuit generated by the common magnetic circuit system, that is, the magnetic circuit systems of the two sound generating units are fused into the common magnetic circuit system, the magnetic induction intensity of the opposite side unit is mutually enhanced, that is, the sensitivity, that is, the output capacity, of the common magnetic circuit system to the second sound generating unit and the first sound generating unit has an enhanced effect, and therefore the sound pressure level of the loudspeaker is improved, and space utilization maximization in the loudspeaker is achieved. Wherein, the sound pressure level (Sound Pressure Level, SPL) represents the magnitude of sound pressure or the intensity of sound, and the unit is decibel (dB).
In a possible implementation manner, the second sound generating unit is a moving coil unit, and the second sound generating unit includes a common magnetic member, the common magnetic member includes a first side and a second side in a height direction of the frame, the first voice coil of the first sound generating unit is located at the first side, the circuit board is located at a side of the first voice coil opposite to the common magnetic member, the second voice coil of the second sound generating unit is located at the second side, and at least part of magnetism of the first side and the second side opposite to each other in the height direction of the frame is opposite, so that the first voice coil and the second voice coil can vibrate under the magnetic field effect of the common magnetic member, in other words, the first voice coil can vibrate under the magnetic field effect of the common magnetic member of the second sound generating unit, so that the number of parts of the first sound generating unit is reduced, thereby simplifying an assembly procedure of the speaker, and also reducing a size of the speaker, and realizing miniaturization of the speaker.
In one possible implementation manner, each first conductive plug-in unit in the first conductive structure further includes a first main body portion and a first bending portion connected to the first main body portion, and two ends of the first main body portion are respectively connected with the first conductive terminal and the first conductive pin of the corresponding first conductive plug-in unit, that is, the first conductive terminal and the first conductive pin are electrically connected through the first main body portion. Wherein, inside the lateral wall of basin frame was worn to locate along the circumference of basin frame to first main part, inside the lateral wall of basin frame was worn to locate along the thickness direction of basin frame lateral wall to first kink, improved the steadiness of every first electrically conductive plug-in components in the first electrically conductive structure inside the lateral wall of basin frame to the electric connection stability of first electrically conductive structure and first sound unit and external circuit has been improved.
In a possible implementation manner, each second conductive plug-in the second conductive structure further comprises a second bending part, the second bending part is connected with the second conductive pin, and the second bending part is embedded in the side wall of the basin frame so as to improve the stability of each second conductive plug-in the second conductive structure in the side wall of the basin frame, and therefore the electrical connection stability of the second conductive structure, the second sounding unit and the external circuit is improved.
In a possible implementation manner, in a plurality of sound generating units, one of the first sound generating unit and the second sound generating unit has a working frequency band larger than that of the other sound generating unit, so that the frequency band of the loudspeaker of the embodiment of the application is widened, and the application scene of the loudspeaker is widened.
In one possible implementation manner, the plurality of sound generating units further includes a third sound generating unit, the working frequency band of the second sound generating unit is smaller than the working frequency band of the first sound generating unit, and the third sound generating unit and the first sound generating unit are both located on the same side of the second sound generating unit.
The arrangement of the third sound generating unit widens the working frequency band of the loudspeaker, improves the audio effect of the loudspeaker, and enables the use scene of the loudspeaker of the embodiment of the application to be wider. In addition, the first sound generating unit and the third sound generating unit are located on the same side of the second sound generating unit, namely, the two sound generating units with higher frequency are located on the same side of the second sound generating unit with lower frequency, so that when the electronic equipment is assembled, the sound outlets of the first sound generating unit and the third sound generating unit can be simultaneously close to the sound outlet of the electronic equipment, and the audio performance of the two sound generating units with higher frequency is improved.
In one possible implementation manner, the plurality of groups of conductive structures further comprise a third conductive structure, the third conductive structure comprises two third conductive plug-ins, and a first end of each third conductive plug-in is exposed on the outer surface of the side wall of the basin frame and is electrically connected with the third sounding unit.
Through set up the electrically conductive structure of third in the lateral wall of basin frame for third sound unit modularization, for example, when the assembly, only need assemble the third sound unit to the basin frame in after, then with the first end electricity of every third electrically conductive plug-in components in third sound unit and the electrically conductive structure of third, just accomplish the equipment of third sound unit, follow-up only need be connected the second end electricity of external circuit and two electrically conductive plug-ins of third, alright energize third sound unit, simplified the assembly line process of third sound unit, improved the packaging efficiency of speaker. In addition, the first end of each third conductive plug-in is exposed out of the outer surface of the side wall of the basin frame, so that the electrical connection between the third sound generating unit and the third conductive plug-in is more convenient and reliable.
In one possible implementation, the first end of each third conductive insert has a second conductive terminal, the second end of each third conductive insert has a third conductive pin, and each second conductive terminal is electrically connected to the third sound generating unit through the circuit board of the speaker.
The second conductive terminals are arranged at the first end of each third conductive plug-in unit, and the second conductive terminals are electrically connected with the third sounding unit through the circuit board of the loudspeaker, so that the third sounding unit is electrically connected with the first end of the third conductive plug-in unit. In addition, the third sound generating unit and the first sound generating unit share one circuit board, so that the number of parts in the loudspeaker is reduced, on one hand, the size of the loudspeaker is reduced, on the other hand, the assembly procedure of the loudspeaker is simplified, and the assembly efficiency of the loudspeaker is improved.
In a feasible implementation mode, the circuit board further comprises two second extending parts arranged at the outer edge of the first body part, the two second extending parts are located on the outer surface of the side wall of the basin frame, the first body part is electrically connected with the third sounding unit, the two second extending parts are respectively and correspondingly electrically connected with the two second conductive terminals, on one hand, the positive electrode and the negative electrode of the third sounding unit are respectively and electrically connected with the corresponding second conductive terminals through the circuit board, on the other hand, the arrangement of the two second extending parts in the circuit board enables the connection between the circuit board and the first end of the third conductive plug-in unit to be more convenient and reliable, the second extending parts can be attached to the outer surface of the side wall of the basin frame, the size of the inside of the loudspeaker occupied by the circuit board is saved, and therefore the miniaturization of the loudspeaker can be ensured.
In one possible implementation manner, each second extension part is provided with a second mounting hole, one end of the second conductive terminal is arranged in the second mounting hole in a penetrating manner, and one end of the second conductive terminal is electrically connected with the hole wall of the second mounting hole.
Through seting up the second mounting hole on the second extension to wear to locate in this second mounting hole with the second conductive terminal, so that the electricity between second extension and the second conductive terminal is connected, for example, when second extension and the welding of second conductive terminal, can carry out the soldering along the annular clearance between the inner wall of second mounting hole and the lateral wall of second conductive terminal, make the welding between second extension and the second conductive terminal more simple and fast, and improved the electric connection reliability between second extension and the second conductive terminal. In addition, through wearing to locate the second conductive terminal in the second mounting hole of second extension, play the positioning action to the second extension, namely the second extension is located on the second conductive terminal, the welding of second extension and second conductive terminal of being convenient for, and need not additionally to set up location structure to the welding process between circuit board and the second conductive terminal has also been simplified to the structure of speaker.
In one possible implementation, the outer surface of the side wall of the basin frame further comprises a second connection area, the second connection area is located between the two second conductive terminals, and the two third conductive pins are located in the second connection area.
The two second conductive terminals are led to the second wiring area of the side wall of the basin frame through the third conductive pins of the third conductive plug-in unit, in other words, the positive and negative pins of the third sounding unit are led to the third conductive pins which are closer to the second sounding unit from the two second conductive terminals which are farther to the second sounding unit, so that the outside can be electrified to the third sounding unit by directly welding one circuit board, such as a flexible circuit board, with the two third conductive pins in the second wiring area, and the electric connection structure between the positive and negative pins of the third sounding unit and an external circuit is simplified, thereby simplifying the assembly procedure of the loudspeaker and the external circuit of the embodiment of the application, and facilitating the whole machine application of the loudspeaker of the embodiment of the application.
In one possible implementation, the first and second connection regions of the frame are arranged at intervals along the circumferential direction of the frame, so that the influence of circuit boards on each other when an external circuit such as a flexible circuit board is electrically connected with the first and second connection regions is avoided, and the external two circuit boards can be stably connected on the respective connection regions, thereby ensuring the reliability of the electrical connection between the external circuit and the loudspeaker.
In a feasible implementation manner, each third conductive plug-in unit further comprises a second main body part and a third bending part connected to the second main body part, two ends of the second main body part are respectively connected with the second conductive terminal and the third conductive pin of each third conductive plug-in unit, the second main body part is embedded in the side wall of the basin frame along the circumferential direction of the basin frame, the third bending part is embedded in the side wall of the basin frame along the thickness direction of the side wall of the basin frame, so that the stability of the two third conductive plug-in units of the third conductive structure in the side wall of the basin frame is improved, and the electrical connection stability of the third conductive structure, the third sounding unit and an external circuit is ensured.
In a feasible implementation manner, the third sound generating unit in the sound generating unit is a micro-electromechanical sound generating unit, the micro-electromechanical sound generating unit and the first sound generating unit of the loudspeaker are located on the same side of the second sound generating unit, on one hand, the occupied space of the third sound generating unit in the loudspeaker is reduced, so that the loudspeaker is miniaturized, on the other hand, the micro-electromechanical sound generating unit and the first sound generating unit are located on the same side of the second sound generating unit, namely, two sound generating units with higher frequency are located on the same side of the second sound generating unit with lower frequency, and therefore, when the micro-electromechanical sound generating unit is assembled, the sound outlet of the first sound generating unit and the sound outlet of the micro-electromechanical sound generating unit, namely, the sound outlet of the third sound generating unit, are simultaneously close to the sound outlet of the electronic equipment, so that the audio performance of the two sound generating units with higher frequency is improved.
In a possible implementation manner, the basin frame and the conductive structures are integrally formed into an integral piece, for example, each group of conductive structures and the basin frame can be integrally injection molded, so that the assembly procedure between the basin frame and each group of conductive structures is simplified, the number of parts of the loudspeaker is reduced, the assembly efficiency of the loudspeaker is improved, and in addition, the connection stability between the basin frame and the conductive structures is improved, so that the electrical connection reliability between each sound generating unit and an external circuit is ensured.
In another aspect, an embodiment of the present application further provides an electronic device, including a housing and at least one speaker as above, where the speaker is located in an inner cavity of the housing.
According to the embodiment of the application, the loudspeaker is arranged in the electronic equipment, so that the assembly process of the electronic equipment is simplified, and the assembly efficiency of the electronic equipment is improved.
In a feasible implementation mode, the electronic device is an earphone, and the loudspeaker is arranged in the earphone, so that the occupied space of the loudspeaker in the earphone is saved, and the earphone can be miniaturized in the setting process.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
fig. 4 is a schematic structural diagram of one speaker according to an embodiment of the present application;
fig. 5 is a schematic view of the structure of the tub stand of fig. 4;
FIG. 6 is a schematic diagram of the conductive structure of FIG. 5;
fig. 7 is a schematic structural diagram of another speaker according to an embodiment of the present application;
FIG. 8 is an exploded view of FIG. 7;
FIG. 9 is a cross-sectional view of FIG. 8;
FIG. 10 is a cross-sectional view of FIG. 8;
FIG. 11 is a schematic diagram of the distribution of the magnetic field of FIG. 8;
FIG. 12 is a diagram of a simulation of the spatial distribution of the magnetic field of FIG. 7;
FIG. 13 is a graph of simulated performance results of the speaker of FIG. 7 within an electronic device;
fig. 14 is a schematic structural diagram of another speaker according to an embodiment of the present application;
FIG. 15a is a partial exploded view of FIG. 7;
FIG. 15b is a partial cross-sectional view of FIG. 7;
FIG. 15c is a schematic view of the first vibration assembly of FIG. 15 a;
FIG. 16 is an exploded view of FIG. 15 c;
FIG. 17a is a schematic view of the structure from another perspective of FIG. 15 c;
FIG. 17b is a schematic view of a portion of the structure of FIG. 7;
fig. 18 is a schematic structural view of yet another speaker according to an embodiment of the present application;
FIG. 19 is an exploded view of FIG. 18;
FIG. 20 is a schematic view of the third sound emitting unit of FIG. 19;
FIG. 21 is a cross-sectional view of FIG. 18;
FIG. 22 is a cross-sectional view of FIG. 18;
FIG. 23 is a partial schematic view of the structure of FIG. 18;
FIG. 24 is a schematic diagram of the circuit board of FIG. 23;
FIG. 25 is a schematic view of the third conductive structure of FIG. 23;
FIG. 26 is a partial cross-sectional view of FIG. 24;
FIG. 27 is a partial cross-sectional view of FIG. 24;
fig. 28 is a schematic structural view of yet another speaker according to an embodiment of the present application;
FIG. 29 is a schematic view of the structure of FIG. 28 from another perspective;
FIG. 30 is a schematic diagram of the structure of the second circuit board of FIG. 29;
fig. 31 is a cross-sectional view of fig. 29.
Reference numerals illustrate:
100-a housing; 200-ear muffs; 300-speakers;
110-a first housing; 120-a second housing; 101-an earphone front cavity; 102-a rear cavity of the earphone; 100 a-a mouthpiece;
301-a first cavity; 302-a second cavity; 303-a third cavity; 304-fourth cavity; 310-a first sound generating unit; 320-a second sound generating unit; 330-a third sound generating unit; 340-sharing a magnetic circuit system; 350-basin stand; 360-a first cover; 370-a second cover; 380-steel ring; 390-conductive structure;
311-first magnetic member; 312 a-a first vibration assembly; 312-a first voice coil; 313-a first diaphragm; 314—a first sound outlet; 315-a first circuit board;
321-a second magnetic member; 321 a-a common magnetic member; 322 a-a second vibration assembly; 322-a second voice coil; 323-a second diaphragm; 324-a second sound outlet;
331-a third sound outlet; 332-a second circuit board;
3321—a second body portion; 3322—branching portion; 332 a-a third mounting hole;
341-washer; 342-magnetic conductive member; 343-a cavity; 344-a second damping mesh;
391-a first conductive structure; 392-a second conductive structure; 393-third conductive structure; 391a, 391 b-first conductive insert; 392a, 392 b-a second electrically conductive insert; 393a, 393 b-third conductive inserts;
3911a, 3911 b-first conductive terminals; 3912a, 3912 b-first conductive pins; 3913a, 3913 b-a first body portion; 3914a, 3914b—a first bend; 3921a, 3921 b-second conductive pins; 3922a, 3922 b-second bends; 3931a, 3931 b-second conductive terminals; 3932a, 3932 b-third conductive pins; 3933a, 3933 b-second body portion; 3934-third bends; 358-step surface; 350 a-a first wiring region; 350 b-a second wiring region; 350 c-a protrusion;
361-an air outlet; 362-a first damping mesh;
3111-a first center magnet; 3112-first side magnets; 3113-first magnetic gap; 311 a-first escape aperture;
3131—a first dome; 3132—a first collar; 313 a-a second escape aperture;
3151—a first body portion; 3152a, 3152 b-first extension; 3153a, 3153 b-second extension; 3154—a third extension; 3155—a first connection; 3156-a second connection; 315 a-a third relief hole; 315 b-a first annular hole; 315 j-a second annular hole; 315 c-a first mounting hole; 315 d-second mounting holes; 315 e-inner ring; 315 f-outer ring;
3211-a second center magnet; 3212-second side magnets; 3213-a second magnetic gap;
3231-second dome; 3232-a second fold;
3411-central washer; 3412-Bian Huasi; 3413-third gap;
315 g-first portion; 315 h-second portion;
the x-direction, y-direction, and z-direction may be perpendicular to each other.
Detailed Description
The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application, fig. 2 is an exploded view of fig. 1, and fig. 3 is a cross-sectional view of fig. 1. Referring to fig. 1 to 3, an embodiment of the present application provides an electronic device including a housing 100 and a speaker 300 (shown with reference to fig. 2 and 3) located in an inner cavity of the housing 100. The speaker 300 is a device that converts an electric signal into an acoustic signal. The speaker 300 has a common acoustic index such as a sound pressure level (sound pressure level, SPL for short) and a bandwidth, which is evaluated based on an acoustic signal generated by the speaker 300.
It should be noted that, the electronic device according to the embodiment of the present application may include, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an ultra mobile personal computer (ultra-mobile personal computer, UMPC), a handheld computer, a touch-sensitive television, an interphone, a netbook, a POS, a personal digital assistant (personal digital assistant, PDA), a wearable device such as an earphone, a bluetooth glasses, etc., a mobile or fixed terminal with an acoustic transducer such as a speaker 300, etc.
Referring to fig. 3, taking an earphone as an example, the housing 100 of the earphone may generally include a first housing 110 and a second housing 120, where the first housing 110 and the second housing 120 disposed opposite to each other enclose an inner cavity of the earphone, and the speaker 300 is located in the inner cavity of the earphone. In some examples, the interior cavity of the earpiece includes an earpiece front cavity 101 and an earpiece rear cavity 102. Illustratively, one side of the speaker 300 forms the earphone front chamber 101 with a portion of the housing wall (e.g., a portion of the housing wall of the second housing 120), and the other side of the speaker 300 forms the earphone rear chamber 102 with another portion of the housing wall (e.g., a portion of the housing wall of the first housing 110), in other words, the speaker 300 separates the inner chamber of the earphone into the earphone front chamber 101 and the earphone rear chamber 102.
The housing 100, for example, the second housing 120, has a mouthpiece 100a, and the mouthpiece 100a communicates with the front earphone cavity 101. One side (e.g., front side) of the speaker 300 faces the mouthpiece 100a, and the other side (e.g., rear side) of the speaker 300 faces away from the mouthpiece 100a. After the speaker 300 receives the electrical signal, the vibration system in the speaker 300 will vibrate at a certain frequency, so as to push the air in the front cavity 101 of the earphone on the front side of the speaker 300 and the rear cavity 102 of the earphone on the rear side of the speaker 300 to vibrate, so that a part of the sound can be transmitted to the front cavity 101 of the earphone through the space between the vibration system and the front side of the speaker 300, and then transmitted to the outside of the earphone through the sound outlet nozzle 100a, and another part of the sound can be transmitted from the space between the rear side of the speaker 300 and the vibration system to the space between the vibration system and the front side through the through hole at the vibration system, and then transmitted to the outside of the earphone through the front cavity 101 of the earphone and the sound outlet nozzle 100a.
When the headset is worn on the ear, sound from the speaker 300 may pass out of the mouthpiece 100a and into the ear canal.
Referring to fig. 3, in some embodiments, an ear cap 200 may be sleeved on the mouthpiece 100a, where the ear cap 200 is used to be attached to an inner wall of the ear canal when the earphone is worn on the ear, so as to isolate the ear canal from the external environment, thereby reducing noise of the external environment.
Currently, some headphones, such as high-end headphones, adopt a multi-unit design, that is, in some examples, the headphones may include a plurality of sound generating units, and different sound generating units may be respectively responsible for corresponding frequency bands through analog frequency division or physical frequency division means, so as to widen the overall bandwidth, thereby achieving the purpose of optimizing the high-frequency sound quality.
Fig. 4 is a schematic structural diagram of a speaker according to an embodiment of the present application. Referring to fig. 4, an embodiment of the present application provides a speaker including a frame 350 and a plurality of sound emitting units, at least part of which are located in an inner cavity of the frame 350.
For example, the speaker 300 may include two sound emitting units disposed in the inner cavity of the tub 350. For convenience of description, the two sound emitting units are the first sound emitting unit 310 and the second sound emitting unit 320, respectively.
Referring to fig. 4, the first sound generating unit 310 and the second sound generating unit 320 may each be a moving coil unit, for example. Referring to fig. 4, for example, the first sound generating unit 310 may further include a first vibration assembly 312a and a first magnetic member 311, wherein the first vibration assembly 312a includes a first diaphragm 313 and a first voice coil 312, the first diaphragm 313 is located at one end of the first voice coil 312, and for example, one end of the first voice coil 312 may be connected to one side of the first diaphragm 313 by bonding or the like.
The first magnetic member 311 is disposed in the inner cavity of the basin frame 350, and on the first cross section, a side wall of the first magnetic member 311 has a first magnetic gap 3113, and at least a portion of the first voice coil 312 facing away from the first diaphragm 313 is inserted into the first magnetic gap 3113. The first cross section refers to one of planes of the first magnetic member 311 perpendicular to the thickness direction (refer to the z direction in fig. 4). In some examples, the first magnetic member 311 may be a magnet.
In some implementations, the first sound generating unit 310 generates sound facing the mouthpiece 100a, the first voice coil 312 faces the mouthpiece 100a, and the first voice coil 312 faces the earpiece front cavity 101; the second sound generating unit 320 generates sound opposite to the sound outlet 100a, the second voice coil 322 faces opposite to the sound outlet 100a, and the second voice coil 322 faces the earphone rear cavity 102.
Referring to fig. 4, a first cavity 301 is disposed between the first diaphragm 313 and the first magnetic member 311, and a fourth cavity 304 (shown in fig. 3) is disposed on a side of the first diaphragm 313 opposite to the first magnetic member 311. In the embodiment of the present application, the first cavity 301 is used as the rear cavity of the first sound generating unit 310, and the fourth cavity 304 is used as the front cavity of the first sound generating unit 310.
After the first magnetic member 311 is magnetized, a magnetic field is generated, a part of the magnetic field is located in the first magnetic gap 3113, and the magnetic field direction in the first magnetic gap 3113 is perpendicular to the side surface of the first voice coil 312, so that the first voice coil 312 after being electrified can generate lorentz force under the action of the magnetic field of the first magnetic member 311, and according to the left-hand rule, the lorentz force is parallel to the thickness direction (for example, the z direction shown in fig. 4) of the first voice coil 312, so that the lorentz force can be used as the driving force of the first voice coil 312 to drive the first voice coil 312 to vibrate along the thickness direction, thereby driving the first diaphragm 313 to vibrate, so as to drive the air of the front cavity (i.e., the fourth cavity 304) and the rear cavity (i.e., the first cavity 301) in the first sound generating unit 310 to vibrate, so that the first sound generating unit 310 generates sound. The side of the first voice coil 312 refers to a surface of the first voice coil 312 parallel to the axis of the first voice coil 312.
It will be appreciated that the current of the first voice coil 312 may be an alternating current, so that the direction of the lorentz force applied to the first voice coil 312 is alternately changed in the direction towards the first magnetic element 311 and the direction away from the first magnetic element 311, so that the first voice coil 312 drives the first diaphragm 313 to move back and forth along the thickness direction of the first voice coil 312, i.e. vibrate, i.e. the first diaphragm 313 can vibrate in the direction approaching or separating from the first magnetic element 311 under the driving of the first voice coil.
In the embodiment of the present application, the fourth cavity 304, for example, the front cavity of the first sound generating unit 210, may be in communication with the front cavity 101 of the earphone, so as to transmit the sound generated by the first sound generating unit 210 to the outside of the earphone, for example, into the ear canal of the user, through the front cavity 101 of the earphone and the sound outlet 100 a.
Referring to fig. 3, in some examples, the front cavity 101 of the earphone may directly serve as a front cavity (for example, the fourth cavity 304) of the first sound generating unit 310, for example, the fourth cavity 304 is formed by enclosing a side of the first diaphragm 313 facing away from the first magnetic element 311 and a part of the housing wall of the second housing 120.
In this way, the first diaphragm 313 directly pushes air of the first and fourth cavities 301 and 304 to vibrate during vibration, that is, the first diaphragm 313 pushes air of the rear cavity of the first sound generating unit 310 and the front cavity 101 of the earphone to vibrate during vibration, thereby generating sound and transmitting the sound to the outside of the earphone through the mouthpiece 100 a. It will be appreciated that in this example, the mouthpiece 100a may emit sound generated by the first sound emitting unit 310 as a sound outlet (e.g., a first sound outlet) of the first sound emitting unit 310, so that a path along which the sound emitted by the first sound emitting unit 310 propagates to the mouthpiece 100a may be reduced, thereby reducing a sound loss of the first sound emitting unit 310 and improving a middle-high frequency sound quality, such as loudness, of the speaker.
Referring to fig. 4, the second sound generating unit 320 may include a second vibration assembly 322a and a second magnetic member 321, wherein the second vibration assembly 322a includes a second diaphragm 323 and a second voice coil 322, the second diaphragm 323 is positioned at one side of the second voice coil 322, and for example, the second voice coil 322 may be coupled to one side surface of the second diaphragm 323 by bonding or the like.
The second magnetic element 321 is located in the inner cavity of the basin frame 350, and on the second cross section, a second magnetic gap 3213 is formed on a side wall of the second magnetic element 321, and at least a portion of the second voice coil 322 facing away from the second diaphragm 313 is inserted into the second magnetic gap 3213. The second cross section refers to one of planes of the second magnetic element 321 perpendicular to the thickness direction (refer to the z direction in fig. 4).
In some examples, the second magnetic member 321 may be a magnet.
The second cavity 302 is disposed between the second diaphragm 323 and the second magnetic element 321, and a third cavity 303 is disposed at a side of the second diaphragm 323 facing away from the second magnetic element 321. In the embodiment of the application, the second cavity 302 is used as the front cavity of the second sound generating unit 320, and the third cavity 303 is used as the rear cavity of the second sound generating unit 320.
In some implementations, the second diaphragm 323 may face away from the mouthpiece 100a, the second diaphragm 323 may face away from the earpiece front cavity 101, and the second diaphragm 323 may face toward the earpiece rear cavity 102.
For example, after the second magnetic member 321 is magnetized, a magnetic field may be generated, and a direction of the magnetic field in the second magnetic gap 3213 is perpendicular to a side surface of the second voice coil 322, so that the energized second voice coil 322 may generate a lorentz force under the action of the second magnetic member 321, and according to a left-hand rule, the lorentz force may be parallel to a thickness direction (shown in a z direction in fig. 4) of the second voice coil 322, and may be used as a driving force of the second voice coil 322 to drive the second voice coil 322 to vibrate in the thickness direction, thereby driving the second diaphragm 323 to vibrate, so as to drive air of a front cavity (i.e., the second cavity 302) and a rear cavity (i.e., the third cavity 303) in the second sound generating unit 320 to vibrate, so that the second sound generating unit 320 generates sound. The side of the second voice coil 322 refers to the surface of the second voice coil 322 parallel to the axis of the second voice coil 322.
It can be understood that the current of the second voice coil 322 may be an alternating current, so that the direction of the lorentz force applied to the second voice coil 322 is alternately changed in the direction towards the second magnetic element 321 and the direction away from the second magnetic element 321, so that the second voice coil 322 drives the second diaphragm 323 to move back and forth along the thickness direction of the second voice coil 322, i.e. vibrate, i.e. the second diaphragm 323 can vibrate in the direction close to or far away from the second magnetic element 321 under the driving of the second voice coil 322 after being electrified.
Referring to fig. 4, in some examples, one of the second magnetic member 321 and the first magnetic member 311 may be sleeved on the other, so that the first diaphragm 313 and the second diaphragm 323 vibrate and sound at opposite sides in the z direction, so as to reduce the occupied space of the two sound generating units in the height direction of the basin frame 350. For example, the second magnetic member 321 may be a ring magnet, and in the first section, the second magnetic member 321 may be sleeved on the outer circumference of the first magnetic member 311. It will be appreciated that in this example, the first magnetic gap 3113 and the second magnetic gap 3213 are both located between the outer sidewall of the first magnetic piece 311 and the inner sidewall of the second magnetic piece 321. Wherein, the first magnetic gap 3113 is located at an end of the first magnetic member 311 near the first diaphragm 313, and the second magnetic gap 3213 is located at an end of the first magnetic member 311 near the second diaphragm 323.
In addition, the first magnetic member 311 and the second magnetic member 321 may be connected through a magnetic conductive member 342, for example, one end of the magnetic conductive member 342 is connected to the first magnetic member 311, and the other end of the magnetic conductive member 342 is connected to the second magnetic member 321, so as to improve the magnetism of the first magnetic member 311 and the second magnetic member 321, thereby improving the force factors of the first voice coil 312 and the second voice coil 322, so that the sensitivity of the first sound generating unit 310 and the second sound generating unit 320 is improved, and thus, the sound pressure level of the speaker 300 is improved.
Wherein the force factor is one of the design parameters of the loudspeaker. The force factor is the product between the magnetic induction B and the effective line length L of the voice coil, and therefore, the force factor can be referred to as BL. As is known from f=bl×i, the force factor BL is equal to the ratio between the current i on the voice coil and the driving force F (i.e., lorentz force) applied to the voice coil, i.e., the larger the BL is, the stronger the driving force applied to the voice coil at the same current is.
Referring to fig. 4, in the speaker 300 according to the embodiment of the present application, all the sound generating units may be located in the cavity surrounded by the side wall a of the tub 350, for example, when the speaker 300 has two sound generating units (e.g., the first sound generating unit 310 and the second sound generating unit 320), the structural members of the first sound generating unit 310 and the second sound generating unit 320 are located in the cavity of the tub 350, for example, the first magnetic member 311, the second magnetic member 321, the first vibration assembly 312a, and the second vibration assembly 322a are located in the cavity of the tub 350.
In some examples, one or more of all of the sound emitting units are located in the cavity surrounded by the sidewall a of the tub 350, for example, when the speaker 300 has three sound emitting units, one of the three sound emitting units, for example, the first sound emitting unit 310, may be located in the cavity of the tub 350, or two of the three sound emitting units, for example, the first sound emitting unit 310 and the second sound emitting unit 320, may be located in the cavity of the tub 350.
Of course, in some examples, a portion of one of all the sound emitting units is located in the inner cavity of the tub 350, for example, the first magnetic member 311 of the first sound emitting unit 310 is located in the inner cavity, and the first diaphragm 313 is located outside the tub 350, which is not limited in the embodiment of the present application, so long as it is able to ensure stable assembly of sound emission such as the first sound emitting unit 310 and the second sound emitting unit 320 on the tub 350.
It will be appreciated that, if the voice coils 322 in the first sound generating unit 310 and the second sound generating unit 320 need to be inserted into the magnetic gap, the first voice coil 312 and the second voice coil 322 may be cylindrical, have a relatively heavy mass, and may vibrate at a low frequency, and then both sound generating units, for example, the first sound generating unit 310 and the second sound generating unit 320 may be responsible for sound generation in a frequency band within 3kHz, for example, sound generation in a 20-2kHz frequency band.
It will be appreciated that both pins (e.g., positive and negative pins) of each vibration assembly need to be led out of the speaker 300. For example, the positive and negative pins of the first and second voice coils 312 and 322 are led out to the outside of the speaker 300 to be electrically connected to an external circuit, so that the external circuit is electrically connected to each of the first and second voice coils 312 and 322, thereby supplying current to the first and second voice coils 312 and 322, so that the first and second voice coils 312 and 322 after being supplied with current generate lorentz force under the action of a magnetic field and vibrate under the driving of the lorentz force.
In practice, the external circuitry may include electrical connections and audio encoders on electronic devices such as a headset motherboard. Wherein one end of an electrical connection member such as a flexible circuit board is electrically connected to the audio encoder, and the other end of the electrical connection member such as the flexible circuit board is electrically connected to the sound generating unit such as the first voice coil 312 of the first sound generating unit 310, so that the audio encoder is electrically connected to the first voice coil 312. In operation of the loudspeaker 300, the audio encoder transmits an audio signal in a galvanic manner to the first voice coil 312 of a sound generating unit, such as the first sound generating unit 310, through an electrical connection, such that a current having a certain frequency is generated on the first voice coil 312, thereby generating a lorentz force under the action of a magnetic field to drive the first voice coil 312 to vibrate according to the audio signal.
In some examples, a flexible circuit board may be disposed in each sound generating unit, for example, one of the sound generating units, where one end of the flexible circuit board is electrically connected to the positive electrode pin and the negative electrode pin of one of the sound generating units, for example, the voice coil, respectively, for example, one end of the flexible circuit board is electrically connected to the positive electrode pin and the negative electrode pin of the first voice coil 312, and the other end of the flexible circuit board needs to be led out to the outside of the speaker 300, so as to be electrically connected to an external circuit (for example, an audio encoder).
In other examples, two wires may be disposed in each sound generating unit, a portion of the two wires being disposed in the inner cavity of the speaker 300, one end of the two wires disposed in the inner cavity of the speaker 300 being electrically connected to the positive and negative pins of the sound generating unit, for example, the first voice coil 312 of the first sound generating unit 310, respectively, another portion of the two wires may be disposed in the frame 350 of the speaker 300, and the other end of the two wires may be disposed outside the speaker 300 and electrically connected to an external circuit (for example, an audio encoder), such that the audio encoder may be electrically connected to the positive and negative pins of the sound generating unit through the wires to energize the sound generating unit.
In the above example, the structure in which each pin of each sound generating unit is led out to the outside of the speaker 300 is complicated, complicating the assembly process of the speaker 300.
According to the loudspeaker provided by the embodiment of the application, the plurality of groups of conductive structures are arranged in the side wall of the basin frame, and the second ends of the conductive plug-ins in each group of conductive structures are exposed out of the outer side wall of the basin frame, so that when a plurality of sounding units are assembled in the basin frame, the pins of each sounding unit can be led out to the outer surface of the side wall of the basin frame through the conductive plug-ins in the conductive structures only by electrically connecting each sounding unit with the first ends of the conductive plug-ins in the corresponding conductive structures, and the external circuit can be connected with the second ends of the conductive plug-ins in the conductive structures only by electrically connecting the external circuit with the corresponding sounding units, so that the structure that the pins of each sounding unit are led out to the outside of the loudspeaker is simplified, and the assembly procedure of the loudspeaker is simplified.
The following describes in detail the structure of a speaker provided in an embodiment of the present application with reference to the accompanying drawings.
Fig. 5 is a schematic structural view of the basin stand of fig. 4, and fig. 6 is a schematic structural view of the conductive structure of fig. 5. Referring to fig. 5 and 6, a plurality of groups of conductive structures (e.g., the first conductive structure 391 and the second conductive structure 392 in fig. 5 and 6) are disposed in the side wall (refer to a in fig. 5 a) of the basin frame 350 at intervals, and each group of conductive structures corresponds to one sound emitting unit, for example, one group of conductive structures (e.g., the first conductive structure 391) corresponds to the first sound emitting unit 310, and the other group of conductive structures (e.g., the second conductive structure 392) corresponds to the second sound emitting unit 320.
For convenience of description, hereinafter, a height direction of the tub 350 is denoted by a z direction, and a horizontal direction of the tub 350 is denoted by an x direction, which may be a length direction of the tub 350, and a y direction, which may be a width direction of the tub 350. It will be appreciated that the thickness direction and the horizontal direction of the speaker 300 are identical to the height direction and the horizontal direction of the tub 350, for example, the thickness direction of the speaker 300 is the z direction, the horizontal direction of the speaker 300 is the x direction, for example, the length direction, and the width direction is the y direction.
Each group of conductive structures may include two conductive inserts (e.g., a first conductive insert 391a and a first conductive insert 391b in the first conductive structure 391), where a first end of the two conductive inserts is electrically connected to two pins of a corresponding sound generating unit, and a second end of the two conductive inserts is exposed to an outer surface of a sidewall of the basin frame 350 and is electrically connected to an external circuit (e.g., an audio encoder), so that the audio encoder may transmit an audio signal to the corresponding sound generating unit, e.g., a voice coil, through the two conductive inserts in one of the conductive structures in a current manner, so that a current with a certain frequency is generated on the voice coil, thereby generating lorentz force under the action of a magnetic field to drive the voice coil to vibrate according to the audio signal. It will be appreciated that the second ends of each conductive insert are spaced along the outer surface of the sidewall of the tub 350.
The inside of the sidewall of the basin rack 350 refers to a portion between the inner surface and the outer surface of the sidewall of the basin rack 350.
Referring to fig. 6, for example, the plurality of sets of conductive structures may include a first conductive structure 391 and a second conductive structure 392, wherein the first conductive structure 391 may include two first conductive inserts 391a (391 b), wherein a first end (shown as k1 in fig. 5 and 6) of the first conductive insert 391a is electrically connected to the positive electrode of the first sound emitting unit 310, for example, a first end k1 of the first conductive insert 391a is electrically connected (e.g., soldered) to the positive electrode lead of the first voice coil 312, and a second end (shown as k2 in fig. 5 and 6) of the first conductive insert 391a is exposed to the outer surface of the sidewall a of the frame 350 and is electrically connected to an external circuit, such that the positive electrode lead of the first voice coil 312 is led out to the outer surface of the sidewall of the frame 350 through the first conductive insert 391a and is electrically connected to the external circuit.
Accordingly, a first end (shown as k3 in fig. 5 and 6) of the first conductive insert 391b is electrically connected to the negative electrode of the first sound generating unit 310, for example, the first end k3 of the first conductive insert 391b is electrically connected (e.g. soldered) to the negative electrode pin of the first voice coil 312, and a second end (shown as k4 in fig. 5 and 6) of the first conductive insert 391b is exposed to the outer surface of the side wall a of the basin frame 350 and is used for being electrically connected to an external circuit, so that the negative electrode pin of the first voice coil 312 is led out to the outer surface of the side wall of the basin frame 350 through the first conductive insert 391b and is electrically connected to the external circuit, so that an audio decoder in an electronic device such as an earphone transmits a current signal to the first voice coil 312 through two first conductive inserts 391a (391 b) of the first conductive structure 391, so that the first voice coil 312 after being electrified generates lorentz force under the magnetic field and vibrates under the driving of the lorentz force, thereby driving the first diaphragm 313 to vibrate along the z direction in fig. 4, so that the air on both sides of the first diaphragm 313 is pushed to vibrate the first sound generating unit 310.
Referring to fig. 5 and 6, the second conductive structure 392 may include two second conductive inserts 392a (392 b), wherein a first end (shown as k5 in fig. 5 and 6) of the second conductive insert 392a is electrically connected to the positive electrode of the second sound generating unit 320, for example, a first end k5 of the second conductive insert 392a is electrically connected (e.g., welded) to the positive electrode pin of the second voice coil 322, and a second end (shown as k6 in fig. 5 and 6) of the second conductive insert 392a is exposed to the outer surface of the sidewall a of the tub 350 and is electrically connected to an external circuit, such that the positive electrode pin of the second voice coil 322 is led out to the outer surface of the sidewall of the tub 350 through the second conductive insert 392a and is electrically connected to the external circuit.
Accordingly, the first end (shown as k7 in fig. 5 and 6) of the second conductive insert 392b is electrically connected to the negative electrode of the second sound generating unit 320, for example, the first end k7 of the second conductive insert 392b is electrically connected (e.g. welded) to the negative electrode pin of the second voice coil 322, and the second end (shown as k8 in fig. 5 and 6) of the second conductive insert 392b is exposed to the outer surface of the side wall a of the basin frame 350 and is used for being electrically connected to an external circuit, so that the negative electrode pin of the second voice coil 322 is led out to the outer surface of the side wall of the basin frame 350 through the second conductive insert 392b and is electrically connected to the external circuit, so that an audio decoder in an electronic device such as an earphone transmits a current signal to the second voice coil 322 through the two second conductive inserts 392a (392 b) of the second conductive structure 392, so that the second voice coil 322 after being energized generates lorentz force under the magnetic field and vibrates under the driving of the lorentz force, so as to drive the second diaphragm 323 to vibrate along the z direction in fig. 4, so as to push the air on both sides of the second diaphragm 323 to generate sound.
Referring to fig. 4, in the structure of the first sound generating unit 310 and the second sound generating unit 320 corresponding to fig. 4, the first voice coil 312 may be formed by winding a wire in the thickness direction of the first voice coil 312 (referring to the direction z shown in fig. 4), for example, the first voice coil 312 may be formed by winding a wire from bottom to top or from outside to inside in the z direction, and then the positive electrode pin and the negative electrode pin of the first voice coil 312 may be the two ends of the wire forming the first voice coil 312, respectively.
The second voice coil 322 may be formed by winding wires in the thickness direction (referring to the direction z shown in fig. 4) of the voice coil, and the positive and negative electrode pins of the second voice coil 322 may be both ends of the wires forming the second voice coil 322, respectively.
Referring to fig. 5, in some examples, the tub 350 and each set of conductive structures (e.g., the first conductive structure 391 and the second conductive structure 392) may be integrally formed as a single piece, for example, each set of conductive structures and the tub 350 may be integrally injection molded, so as to simplify an assembly process between the tub 350 and each set of conductive structures, reduce the number of parts of the speaker 300, so that the assembly efficiency of the speaker 300 is improved, and in addition, improve the connection stability between the tub 350 and the conductive structures, thereby ensuring the reliability of the electrical connection between each sound generating unit and the external circuit.
Of course, in some examples, the conductive structure may be detachably connected to the side wall a of the basin frame 350 by a clamping connection, so as to facilitate the detachment and replacement of the conductive structure, and the connection manner of the conductive structure and the basin frame 350 is not limited in the embodiments of the present application.
According to the loudspeaker 300 provided by the embodiment of the application, the plurality of groups of conductive structures are arranged in the side wall of the basin frame 350, and the second end of each conductive plug-in unit in each group of conductive structures is exposed out of the outer surface of the side wall A of the basin frame 350, so that when a plurality of sounding units are assembled in the basin frame 350, pins of each sounding unit can be led out to the outer surface of the side wall of the basin frame 350 through each conductive plug-in unit of the conductive structure only by electrically connecting each sounding unit with the first end of each conductive plug-in unit in the corresponding conductive structure, an external circuit is only required to be electrically connected with the second end of each conductive plug-in unit in the conductive structure, power can be supplied to the corresponding sounding unit, and the structure that pins of each sounding unit are led out to the outside of the loudspeaker 300 is simplified, so that the assembly procedure of the loudspeaker 300 is simplified.
In addition, the arrangement of the conductive structure makes each sound generating unit modularized, each sound generating unit can be assembled in the basin frame 350 as a module at a time, and each sound generating unit is electrically connected with the first end of each conductive plug-in the corresponding conductive structure, so that the assembly of the loudspeaker 300 can be completed, and the assembly efficiency of the loudspeaker 300 in the embodiment of the application is improved.
With continued reference to fig. 5, in the multiple sets of conductive structures according to the embodiment of the present application, the first end of each conductive insert in at least one set of conductive structures is exposed on the outer surface of the sidewall a of the basin stand 350, so that the electrical connection between the first end of each conductive insert in the set of conductive structures and the corresponding sounding unit is more convenient and reliable.
In the first conductive structure 391, the first ends of the two first conductive inserts 391a (391 b) are exposed to the outer surface of the sidewall a of the frame 350, for example, the first ends k1 and k3 of the first conductive inserts 391a and 391b are exposed to the outer surface of the sidewall a of the frame 350, so that the first ends of the first conductive inserts are more convenient to electrically connect with the first voice coil 312, i.e., the electrical connection between the first ends of the first conductive inserts located outside the frame 350 and the pins of the first voice coil 312 is more convenient and reliable, thereby simplifying the electrical connection procedure between the first sound generating unit 310 and the first conductive inserts and improving the assembly efficiency of the speaker 300.
Fig. 7 is a schematic structural view of another speaker according to an embodiment of the present application, fig. 8 is an exploded view of fig. 7, fig. 9 is a sectional view of fig. 8, and fig. 10 is a sectional view of fig. 8. Referring to fig. 7 to 10, in some examples, one of the first sound generating unit 310 and the second sound generating unit 320 may have a larger operating frequency band than the other, so that the frequency band of the speaker 300 according to the embodiment of the present application is widened, and thus the application scenario of the speaker is widened, for example, the operating frequency band of the first sound generating unit 310 may be larger than the operating frequency band of the second sound generating unit 320.
Referring to fig. 10, for example, the first sound generating unit 310 may be a planar membrane unit, for example, the first voice coil 312 of the first sound generating unit 310 is located at one side of the first magnetic member 311 in the thickness direction (referring to the z direction shown in fig. 10). Illustratively, the first voice coil 312 is located on a side of the first magnetic member 311 facing away from the second diaphragm 323.
After the first magnetic member 311 is magnetized, a magnetic field is generated, a part of the magnetic field on one side of the first magnetic member 311, for example, the upper side, may be perpendicular to the side surface of the first voice coil 312, so that the first voice coil 312 after being energized may generate a lorentz force under the magnetic field of the first magnetic member 311, and according to the rule of the left hand, the lorentz force is parallel to the thickness direction (for example, the z direction shown in fig. 7) of the first voice coil 312, so that the lorentz force may be used as the driving force of the first voice coil 312 to drive the first voice coil 312 to vibrate in the thickness direction, thereby driving the first diaphragm 313 to vibrate, so as to drive the air of the front cavity (i.e., the fourth cavity 304) and the rear cavity (i.e., the first cavity 301) in the first sound generating unit 310 to vibrate, so that the first sound generating unit 310 generates sound. The side of the first voice coil 312 refers to a surface of the first voice coil 312 parallel to the axis of the first voice coil 312.
In this example, the first voice coil 312 may be a sheet-like annular structure, light in weight, and capable of vibrating at medium and high frequencies, and the first sound generating unit 310 (e.g., a planar membrane unit) may be a medium and high frequency unit in some embodiments. For example, the first sound emitting unit 310 may be responsible for sound emission in the frequency band of 3kHz and above.
Referring to fig. 10, the basin frame 350 of the embodiment of the application may have a cylindrical structure with openings at the top and bottom, and at least a portion of the first sound generating unit 310 and the second sound generating unit 320 are all received in the inner cavity of the basin frame 350, for example, the first vibration component 312a, the second vibration component 322a, the first magnetic member 311 and the second magnetic member 321 are all located in the inner cavity of the basin frame 350.
Referring to fig. 9, for example, the outer edge of the second diaphragm 323 may be connected to the first end of the frame 350 through a steel ring 380. In some examples, the outer edge of the second diaphragm 323 is attached to the inner wall of the first end of the frame 350.
The outer edge of the first diaphragm 313 may be connected to the second end of the frame 350 through a steel ring 380. In some examples, the first diaphragm 313 may include a first dome 3131 and a first ring 3132, the first ring 3132 has a ring structure, the first dome 3131 is located on an inner edge of the first ring 3132, for example, an outer edge of the first dome 3131 may be connected to an inner edge surface of the first ring 3132 by bonding or the like, and an outer edge of the first ring 3132 is connected to a second end of the frame 350, for example, an end surface of the second end.
The constituent materials of the first diaphragm 313 and the second diaphragm 323 include, but are not limited to, one or more of silica gel, rubber, liquid crystal polymer (Liquid Crystal Polyester, abbreviated as LCP) and Polyimide (PI), and may be specifically selected according to actual needs.
It should be noted that the first end and the second end of the basin stand 350 refer to opposite ends of the basin stand 350 along the axial direction, respectively. Referring to fig. 8 to 10, the embodiment of the present application may further include a first cover 360, where the first cover 360 is covered on the opening of the first end of the basin frame 350, for example, a clamping groove may be formed on the sidewall of the first end of the basin frame 350, and a buckle may be disposed on the outer edge of the first cover 360, and by clamping the buckle in the clamping groove, the first cover 360 is clamped on the first end of the basin frame 350, or the first cover 360 and the first end of the basin frame 350 may be adhered together by dispensing glue in the glue groove. For example, in some examples, a glue groove may be formed on a side wall of the first end of the basin frame 350, a glue layer is filled in the glue groove, and an outer edge of the first cover 360 may be adhered to the glue groove of the first end of the basin frame 350 through the glue layer, so that the first cover 360 is stably clamped on the first end of the basin frame 350.
Referring to fig. 9, in practice, the second diaphragm 323 may include a second dome 3231 and a second ring 3232, where the second ring 3232 has a ring structure, the second dome 3231 is located on an inner edge of the second ring 3232, for example, an outer edge of the second dome 3231 may be connected to an inner edge surface of the second ring 3232 by bonding or the like, and in some examples, at least a portion of an outer edge of the second ring 3232 may be connected to a portion of an inner surface of the first cover 360 by bonding or the like, so as to improve stability of the second ring 3232 in the cavity of the speaker 300.
Referring to fig. 9 and 10, a third cavity 303, that is, a rear cavity of the second sound generating unit 320 may be formed between a side of the second diaphragm 323 facing the first cover 360 and the first cover 360. Referring to fig. 3 and 6, in some examples, the third cavity 303 may communicate with the earphone rear cavity 102, so that the earphone rear cavity 102 and the third cavity 303 may be used in common as the rear cavity of the second sound generating unit 320, and the second diaphragm 323 may push air of the second cavity 302, the third cavity 303, and the earphone rear cavity 102 to vibrate during vibration to generate sound. For example, an air outlet 361 may be formed on the first cover 360 to communicate the third cavity 303 with the earphone rear cavity 102. In addition, the air outlet 361 may be covered with a first damping mesh 362 to improve the compliance of the third cavity 303 and the earphone rear cavity 102, thereby improving the sound quality of the earphone.
As shown in fig. 5 and 7, the side wall of the basin stand 350 may be provided with a second sound outlet 324, and the second sound outlet 324 may communicate the second cavity 302 with the outside of the speaker 300, for example, as shown in fig. 3, the second cavity 302 may communicate with the front earphone cavity 101 through the second sound outlet 324, that is, the second cavity 302 may communicate with the outside of the speaker 300 through the front earphone cavity 101, so that the sound emitted by the second sound generating unit 320 may be transmitted to the outside of the speaker 300 through the second sound outlet 324, the front earphone cavity 101 and the sound outlet 100a, for example, in the auditory canal of the user.
Referring to fig. 7, illustratively, the side wall of the basin frame 350 may have a step surface 358, the step surface 358 faces the sound outlet 100a, and the second sound outlet 324 is formed on the step surface 358, so that the second sound outlet 324 faces the sound outlet 100a, that is, the second sound outlet 324 is opposite to the sound outlet 100a along the propagation direction (shown in the direction a in fig. 3) of sound, so as to reduce the propagation path of the sound from the second sound outlet 324 to the sound outlet 100a, thereby reducing the loss of the sound emitted by the second sound generating unit 320 transmitted to the sound outlet 100a, and improving the sound quality of the low frequency band of the electronic device.
It can be appreciated that the wavelength of the sound with middle and high frequencies is shorter than that of the sound with low frequencies, so as to ensure that the loudness of the sound emitted by the middle and high frequency sound generating unit reaching the sound outlet nozzle 100a can meet the requirements, in the embodiment of the present application, compared to the second sound generating unit 320, the first sound generating unit 310 is disposed close to the sound outlet nozzle 100a of the earphone, so as to improve the middle and high frequency loudness of the earphone.
In the embodiment of the present application, the component materials of the basin stand 350 and the first cover 360 may include, but are not limited to, materials with relatively high rigidity such as carbon steel and aluminum alloy, so as to protect the sound generating units, for example, the first sound generating unit 310 and the second sound generating unit 320, and avoid deformation of the speaker 300 due to external forces such as collision.
Referring to fig. 9 and 10, in the embodiment of the present application, the first magnetic element 311 is disposed opposite to the second magnetic element 321, the first voice coil 312 is located at a side of the first magnetic element 311 facing away from the second magnetic element 321, the second voice coil 322 is located in the second magnetic gap 3213 of the second magnetic element 321, that is, the second voice coil 322 is located at a side of the first magnetic element 311 facing away from the first voice coil 312, that is, in a thickness direction (referred to as a z direction in fig. 10) of the speaker 300, the first voice coil 312, the first magnetic element 311, the second magnetic element 321 and the second voice coil 322 are sequentially arranged, and the first voice coil 312 and the second voice coil 322 are disposed back to back.
For example, the first magnetic member 311 may include a first side and a second side opposite to each other in a thickness direction (referring to a z-direction in fig. 10) of the first magnetic member 311, the first voice coil 312 is positioned at the first side of the first magnetic member 311, and the second magnetic member 321 is positioned at the second side of the first magnetic member 311.
In addition, the second magnetic member 321 may include a third side and a fourth side opposite to each other in a thickness direction (refer to a z direction in fig. 10) of the second magnetic member 321, and the second voice coil 322 is located at the fourth side of the second magnetic member 321. It is understood that the first magnetic member 311 is located on the third side of the second magnetic member 321.
It should be noted that, in the embodiment of the present application, the thickness direction of the first magnetic member 311 and the second magnetic member 321 and the height direction of the basin stand 350 can be both shown by referring to the z direction in fig. 10. It is understood that the z-direction may be considered as the thickness direction of the speaker 300.
Referring to fig. 10, in the z-direction, the first diaphragm 313, the first magnetic member 311, the second magnetic member 321, and the second diaphragm 323 are sequentially arranged. For example, the first diaphragm 313, the first magnetic member 311, the second magnetic member 321, and the second diaphragm 323 are sequentially arranged in the opposite direction shown in the z-direction.
Referring to fig. 10, the first magnetic member 311 and the second magnetic member 321 may be stacked in the height direction of the tub. Wherein, the outer circumference side walls of the first magnetic member and the second magnetic member may be coupled to the inner wall of the tub 350. For example, the sidewalls of the first and second magnetic members 311 and 321 may be coupled to the inner wall of the tub 350 by bonding or the like.
Fig. 11 is a schematic diagram of the distribution of the magnetic field in fig. 8. Referring to fig. 11, at least a portion of the first magnetic member 311 on the second side faces at least a portion of the second magnetic member 321 on the third side, that is, at least a portion of the first magnetic member 311 on the second side faces at least a portion of the second magnetic member 321 on the third side in the thickness direction (referring to the z direction in fig. 10), and the portions of the first magnetic member 311 facing the second magnetic member 321 in the z direction are opposite in magnetism, that is, the portions of the first magnetic member 311 corresponding to the second magnetic member 321 are opposite in magnetism, the magnetic lines of force coincide in direction, so as to form a magnetic circuit between the first magnetic member 311 and the second magnetic member 321, so that the first magnetic member 311 and the second magnetic member 321 together form a common magnetic circuit 340 of the first sound generating unit 310 and the second sound generating unit 320, the common magnetic circuit 340 being used to generate the magnetic circuit (for example, a loop formed by a plurality of arrows in fig. 11, two magnetic circuits are shown in fig. 11) to drive the first voice coil 312 and the second voice coil 322, for example, part of magnetic induction lines in magnetic fields generated by the first magnetic member 311 and the second magnetic member 321 together form one magnetic circuit, the first voice coil 312 and the second voice coil 322 are both located in the magnetic circuit, and the first voice coil 312 and the second voice coil 322 are both subjected to the magnetic field of the magnetic circuit, so that the first voice coil 312 after being electrified generates lorentz force under the magnetic field of the magnetic circuit, the lorentz force is used as a driving force to drive the first voice coil 312 to move in the thickness direction, for example, the first voice coil 312 can move up and down in the direction of z under the driving of the lorentz force, meanwhile, the second voice coil 322 after being electrified also generates lorentz force under the magnetic field of the magnetic circuit and moves in the thickness direction of the second voice coil 322, the second voice coil 322 is driven by lorentz force to move up and down in the direction of z.
It should be noted that, because the first magnetic member 311 and the second magnetic member 321 together form the common magnetic circuit system 340 of the first sound generating unit 310 and the second sound generating unit 320, in the embodiment of the present application, the common magnetic circuit system 340 may be the magnetic circuit system of the first sound generating unit 310, and the common magnetic circuit system 340 may also be the magnetic circuit system of the second sound generating unit 320.
In the embodiment of the present application, the magnetic circuit formed by the first magnetic element 311 and the second magnetic element 321 together can be understood as superposition of magnetic circuits of the two magnetic elements, and magnetic induction intensity is enhanced by superposition of magnetic induction intensity, so that the magnetic induction intensity of the magnetic circuit is greater than that of the magnetic induction intensity generated by the first magnetic element 311 and that of the magnetic induction intensity generated by the second magnetic element 321, and thus, compared with the lorentz force generated by the first voice coil 312 after power-on under the action of the magnetic field of the first magnetic element 311, the lorentz force generated by the first voice coil 312 after power-on under the action of the magnetic field of the magnetic circuit is greater, and correspondingly, compared with the lorentz force generated by the second voice coil 322 after power-on under the action of the magnetic field of the second magnetic element 321, the lorentz force generated by the second voice coil 322 after power-on under the action of the magnetic circuit is greater.
For example, the first voice coil 312 of the first sound generating unit 310 may be subjected to the magnetic field of the magnetic circuit formed by the first magnetic member 311 and the second magnetic member 321, that is, the first voice coil 312 may be subjected to the magnetic field of the first magnetic member 311 and the magnetic field of the second magnetic member 321 in the second sound generating unit 320, so that the first voice coil 312 after being energized generates the lorentz force to move along the thickness direction of the first voice coil 312, so that the vibration system formed by the first voice coil 312 and the first diaphragm 313 in the first sound generating unit 310 vibrates to generate sound.
Compared to the planar membrane speaker in the related art, the first voice coil 312 of the first sound generating unit 310 of the embodiment of the present application is subjected to the combined action of the first magnetic element 311 and the second magnetic element 321, so that the magnetic induction intensity of the first voice coil 312 is improved, that is, the force factor of the first voice coil 312 is improved, so that the lorentz force, that is, the driving force, of the first voice coil 312 is improved, and therefore, the amplitude of the vibration system of the first sound generating unit 310 is improved, and the middle-high frequency loudness (also referred to as output capability) of the speaker 300 is improved.
Accordingly, the second voice coil 322 of the second sound generating unit 320 may be subjected to the magnetic field of the magnetic circuit formed by the first magnetic member 311 and the second magnetic member 321, that is, the second voice coil 322 may be subjected to the magnetic field of the second magnetic member 321, and also subjected to the magnetic field of the first magnetic member 311 in the first sound generating unit 310, so that the second voice coil 322 after being electrified generates lorentz force, and moves along the thickness direction of the second voice coil 322, so that the vibration system formed by the second voice coil 322 and the second diaphragm 323 in the second sound generating unit 320 vibrates to generate sound.
Compared with the moving coil speaker in the related art, the second voice coil 322 of the second sound generating unit 320 of the embodiment of the application receives the combined action of the first magnetic element 311 and the second magnetic element 321, so that the magnetic induction intensity received by the second voice coil 322 is improved, that is, the force factor of the second voice coil 322 is improved, so that the lorentz force received by the second voice coil 322, that is, the driving force is improved, and therefore, the amplitude of the vibration system in the second sound generating unit 320 is improved, and the low-frequency loudness (also called as output capability) of the speaker 300 is improved.
Referring to fig. 7 and 8, based on the above-mentioned knowledge, the magnetic circuit systems of the two sound generating units are fused into the common magnetic circuit system 340, so that the magnetic induction intensity of the other unit is mutually enhanced, that is, the common magnetic circuit system 340 has an enhancement effect on the loudness, that is, the output capability, of the second sound generating unit 320 and the first sound generating unit 310, that is, the loudness of the speaker 300 in the embodiment of the present application is improved, and the space utilization in the speaker 300 is also maximized.
It will be appreciated that a single sound emitting unit, such as a moving coil speaker or a planar membrane speaker, may have a narrower bandwidth, for example, a moving coil speaker may in some embodiments be a low frequency speaker where the transient characteristics of the high frequencies are poor. In some embodiments, the planar membrane speaker is a tweeter, and the vibration direction of the vibration system faces the direction of the magnet and is stopped by the magnet, so that the limit amplitude of the vibration system is extremely small, and the low-frequency limit output capability is limited, i.e. the planar membrane speaker 300 is not suitable for low-frequency sound production.
Compared with a speaker with a single sound generating unit, such as a moving coil speaker or a planar membrane speaker, the speaker 300 according to the embodiment of the present application has the advantages that the first sound generating unit 310 and the second sound generating unit 320 are stacked, the first sound generating unit 310 is responsible for middle-high frequency sound generation, the second sound generating unit 320 is responsible for low frequency sound generation, and the bandwidth of the speaker 300 is widened, so that the application scenario of the speaker 300 is widened, and the transient characteristic of the speaker 300 is also improved. In addition, compared with the speaker 300 capable of achieving two second sound producing units 320 or two first sound producing units 310 with the same loudness, the embodiment of the present application saves the occupied space of the magnetic circuit system driving the vibration system in the two sound producing units by providing the common magnetic circuit system 340, thereby realizing miniaturization of the speaker 300.
The magnetizing manners of the first magnetic element 311 and the second magnetic element 321 in the embodiment of the present application may be various.
Referring to fig. 11, as one of the magnetizing methods, one end of the first magnetic member 311 opposite to the second magnetic member 321 in the z direction is opposite in magnetism, and one end of the first magnetic member 311 opposite to the second magnetic member 321 is opposite in magnetism, that is, the first magnetic member 311 and the second magnetic member 321 are magnetized in the same direction.
For example, the first magnetic element 311 and the second magnetic element 321 are both block magnets (not shown in the drawings), the first side of the first magnetic element 311 is an N pole, the second side of the first magnetic element 311 is an S pole, the third side of the second magnetic element 321 is an N pole, and the fourth side of the second magnetic element 321 is an S pole, so that the common magnetic circuit system 340 formed by the first magnetic element 311 and the second magnetic element 321 together includes a plurality of magnetic circuits.
The magnetic induction line of each magnetic circuit may be emitted from the N pole of the common magnetic circuit 340, for example, the N pole of the first magnetic member 311, and enter the S pole of the common magnetic circuit 340, for example, the S pole of the second magnetic member 321, around the side of the first magnetic member 311 facing the first voice coil 312 and one of the side surfaces of the common magnetic circuit 340, for example, the left side, and then reach the N pole of the first magnetic member 311 through the inside of the common magnetic circuit 340.
It will be appreciated that in some examples, the magnetizing directions, i.e. the positive and negative poles, of the first magnetic member 311 and the second magnetic member 321 may be exchanged, for example, the first side of the first magnetic member 311 is an S pole, the second side of the first magnetic member 311 is an N pole, the third side of the second magnetic member 321 is an S pole, and the fourth side of the second magnetic member 321 is an N pole, so that the common magnetic circuit system 340 formed by the first magnetic member 311 and the second magnetic member 321 together includes a plurality of magnetic circuits.
The magnetic induction line of each magnetic circuit may be emitted from the N pole of the common magnetic circuit 340, for example, the N pole of the second magnetic element 321, pass through the side of the second magnetic element 321 facing away from the first magnetic element 311 and one side surface of the common magnetic circuit 340, for example, the left side, and enter the S pole of the common magnetic circuit 340, for example, the S pole of the first magnetic element 311, and then pass through the interior of the common magnetic circuit 340 to reach the N pole of the second magnetic element 321.
It will be appreciated that, in the magnetic circuit, a portion of the magnetic induction line located on the side of the first magnetic member 311 facing the first voice coil 312 may vertically pass through the side of the first voice coil 312, so that the first voice coil 312 after being energized generates a lorentz force parallel to the thickness direction of the first voice coil 312, thereby driving the first voice coil 312 to vibrate back and forth in the thickness direction (e.g., the direction in which z is located in fig. 8).
In addition, in the magnetic circuit, a portion of the magnetic induction line located at the side of the second magnetic element 321 may vertically pass through the side of the second voice coil 322, so that the energized second voice coil 322 generates a lorentz force parallel to the thickness direction of the second voice coil 322, thereby driving the second voice coil 322 to vibrate back and forth along the thickness direction (e.g., the direction in which z is located in fig. 11).
Referring to fig. 9 and 10, in some examples, the first magnetic member 311 may include a first center magnet 3111 and a first side magnet 3112. In the first cross section, the first side magnet 3112 is fitted around the outer periphery of the first center magnet 3111. The first cross section refers to a cross section of the first magnetic member 311 perpendicular to the thickness direction (i.e., the z direction in fig. 10).
The first side magnet 3112 may have a first magnetic gap 3113 between an inner edge thereof and an outer edge of the first center magnet 3111, that is, the first center magnet 3111 and the first side magnet 3112 may be disposed at a distance from each other, so as to avoid magnetization of the first center magnet 3111 and the second center magnet 3211.
Referring to fig. 11, the first center magnet 3111 on the second side and the first side magnet 3112 on the second side are illustratively opposite in magnetic properties, that is, the first center magnet 3111 is opposite in magnetic properties to the side of the first side magnet 3112 facing away from the first voice coil 312, that is, the first center magnet 3111 is opposite in magnetic properties to the second side of the first side magnet 3112, and accordingly, the first center magnet 3111 is opposite in magnetic properties to the first side of the first side magnet 3112 (i.e., the side facing toward the first voice coil 312), such that a magnetic circuit resembling a U is formed between the first center magnet 3111 and the first side magnet 3112, for example, the first side of the first center magnet 3111 is N-pole, the first side of the first side magnet 3112 is S-pole, so that the first side of the first center magnet 3111 emits magnetic force lines, and reaches the first side of the first side magnet 3112 through the first center magnet 3111 toward the upper space of the first voice coil 312, and enters into the first side magnet 3112, so that the first magnetic member 311 forms a U-shaped magnetic field toward one side of the first voice coil 312, and the first voice coil 312 can be located at the top of the U-shaped magnetic field, so that the first voice coil 312 after being energized can move in the thickness direction under the action of lorentz force, and the structure of the first magnetic member 311 is simplified, and the manufacturing efficiency of the speaker 300 is improved.
Referring to fig. 11, the first magnetic member 311 and the second magnetic member 321 are exemplarily stacked in the z-direction. It will be appreciated that when the first magnetic member 311 is located above the second magnetic member 321, the first center magnet 3111 and the first side magnet 3112 form an "inverted U-shaped" magnetic field, i.e. the opening of the U-shaped magnetic field is downward and the top position is upward. When the first magnetic member 311 is located below the second magnetic member 321, the first center magnet 3111 and the first side magnet 3112 form a "positive U-shaped" magnetic field, i.e. the opening of the U-shaped magnetic field faces upward, and the top portion faces downward.
In a specific arrangement, the first center magnet 3111 may be a single magnet (see fig. 8), or may be formed by splicing a plurality of magnets. The first center magnet 3111 may be a circular magnet (see fig. 8), a square magnet, or a magnet of another shape, and for example, the first center magnet 3111 may be a magnet of another irregular shape, and the shape of the first center magnet 3111 is not limited in the embodiment of the present application, and may be specifically selected according to actual needs.
The first side magnet 3112 may be one side magnet (see fig. 8) that is fitted around the outer periphery of the first center magnet 3111, or may be formed by a plurality of bar magnets that are wound around the first center magnet 3111. Wherein, two adjacent bar magnets can be arranged at intervals or can be mutually butted. The first side magnet 3112 may be a ring magnet (see fig. 8), a square ring magnet, or a side magnet of another shape, and the shape of the first side magnet 3112 is not limited in the embodiment of the application, and may be specifically selected according to actual needs.
Referring to fig. 10, the first voice coil 312 overlaps with the projection of the first magnetic gap 3113 in the thickness direction of the first voice coil 312 (for example, in the direction z shown in fig. 10), that is, at least part of the projection of the first voice coil 312 in the z direction onto the first magnetic member 311 covers the first magnetic gap 3113, for example, the first voice coil 312 may face the first magnetic gap 3113, that is, a center position between an inner edge and an outer edge of the first voice coil 312 faces the first magnetic gap 3113 in the thickness direction of the first voice coil 312.
It will be appreciated that the projection of the top position of the U-shaped magnetic field on the first magnetic member 311 is located on the first magnetic gap 3113, in other words, the magnetic field opposite to the position of the first magnetic gap 3113 has a horizontal magnetic induction line parallel to the first magnetic member 311, and the loudness of the first sound generating unit 310 is improved by overlapping the first voice coil 312 with the first magnetic gap 3113 in the thickness direction of the first voice coil 312, that is, by disposing the first voice coil 312 opposite to the first magnetic gap 3113, so as to increase the area of the first voice coil 312 subjected to the horizontal magnetic circuit, thereby increasing the magnetic induction intensity of the horizontal magnetic circuit to which the first voice coil 312 is subjected.
In addition, the first magnetic gap 3113 may be used as a positioning reference for the first voice coil 312, that is, only the first voice coil 312 needs to be disposed on one side of the first magnetic gap 3113, for example, the first voice coil 312 is opposite to the first magnetic gap 3113, so that the first voice coil 312 can be positioned in a direction perpendicular to the thickness direction, and then the first voice coil 312 can be positioned at the top position of the U-shaped magnetic field by adjusting the position of the first voice coil 312 in the thickness direction, so that the first voice coil 312 after being electrified moves in the thickness direction under the magnetic field effect of the top position of the U-shaped magnetic field, and on the other hand, the positioning efficiency of the first voice coil 312 is improved, thereby improving the assembly efficiency of the speaker 300.
With continued reference to fig. 8 and 10, in some examples, the second magnetic member 321 may include a second center magnet 3211, the second center magnet 3211 being located on a second side of the first center magnet 3111, i.e., the second center magnet 3211 is disposed opposite the first center magnet 3111, and the second center magnet 3211 is magnetically opposite the side opposite the first center magnet 3111.
Referring to fig. 11, for example, when the second side of the first center magnet 3111 is S-pole, the first side of the first center magnet 3111 is N-pole, the third side of the second center magnet 3211 is N-pole, the fourth side of the second center magnet 3211 is S-pole, the first side of the first side magnet 3112 is S-pole, and the second side of the first side magnet 3112 is N-pole, so that the fourth side of the second center magnet 3211 and the second side of the first side magnet 3112 have opposite magnetic properties, a magnetic field perpendicular to the side of the second center magnet 3211 (i.e., the magnetic gap of the second magnetic member 321) is formed between the fourth side of the second center magnet 3211 and the second side of the first side magnet 3112, and thus the second center magnet 3211 and the first magnetic member 311 together form a magnetic circuit.
At least a portion of the second voice coil 322 is fitted around the outer periphery of the second center magnet 3211 in the second cross section. The second cross section is a cross section perpendicular to the thickness direction of the first magnetic member 311. It is understood that in this embodiment, the thickness direction of the first magnetic member 311 is identical to the thickness direction of the second magnetic member 321, and both can be shown with reference to the z-direction in fig. 11. Through at least partial cover of second voice coil 322 establishes in the periphery of second center magnet 3211, the partial magnetic field direction of magnetic circuit is perpendicular to the lateral wall of second voice coil 322, and the partial magnetic circuit between the one end that second center magnet 3211 was kept away from first voice coil 312 and the one end that first side magnet 3112 was kept away from first voice coil 312 passes the lateral wall of second voice coil 322 perpendicularly to make the second voice coil 322 after the circular telegram follow thickness direction motion under this partial magnetic field effect, on the other hand, simplified the structural setting of second magnetic part 321, improved the manufacturing efficiency of speaker 300.
In addition, the second center magnet 3211 is magnetized in the same direction as the first center magnet 3111, so that the second center magnet 3211 has an enhanced effect on the magnetic field generated by the first magnetic member 311, for example, the first center magnet 3111 and the first side magnet 3112, and accordingly, the first magnetic member 311 also has an enhanced effect on the magnetic field generated by the second center magnet 3211, thereby improving the magnetic induction intensity of the first voice coil 312 and the second voice coil 322, so that the sensitivity of the vibration system in the first sound generating unit 310 and the second sound generating unit 320 is improved, and thus the loudness of the first sound generating unit 310 and the second sound generating unit 320 is improved.
Referring to fig. 8 and 10, in order to ensure that a closed magnetic circuit is formed between the first side magnet 3112 and the second end of the second center magnet 3211, in some examples, the second magnetic element 321 may further include a second side magnet 3212, and the second side magnet 3212 is sleeved on the outer periphery of the second center magnet 3211 in the second cross section. Wherein, a second magnetic gap 3213 is provided between the inner edge of the second side magnet 3212 and the outer edge of the second center magnet 3211, and at least a portion of the second voice coil 322 is inserted into the second magnetic gap 3213. It is understood that the second magnetic gap 3213 may be a magnetic gap of the second magnetic member 321.
The second side magnet 3212 is located on a second side of the first side magnet 3112, that is, the second side magnet 3212 is disposed opposite to the first side magnet 3112, and the second side magnet 3212 on a third side is opposite to the second center magnet 3211 on a third side, so that the second side magnet 3212 is opposite to the first side magnet 3112, that is, the third side of the second side magnet 3212 is opposite to the second side of the first side magnet 3112, and accordingly, the second side magnet 3212 is opposite to the second center magnet 3211 on a side opposite to the first magnetic member 311, that is, on a fourth side, so that a magnetic field perpendicular to the side of the second center magnet 3211 is generated between the second side magnet 3212 and the fourth side of the second center magnet 3211, that is, the second center magnet 3211, the first center magnet 3111, the first side magnet 3112 and the second side magnet 3212 together form a magnetic circuit.
Fig. 12 is a diagram showing a simulation structure of the spatial distribution of the magnetic field in fig. 7. Referring to fig. 11 and 12, by way of example, the first side of the first center magnet 3111 is N-pole, the second side of the first center magnet 3111 is S-pole, the first side of the first side magnet 3112 is S-pole, the second side of the first side magnet 3112 is N-pole, the third side of the second center magnet 3211 is N-pole, the fourth side of the second center magnet 3211 is S-pole, the third side of the second side magnet 3212 is S-pole, and the fourth side of the second side magnet 3212 is N-pole, the magnetic lines of force of the magnetic circuit may be emitted from the N-pole of the common magnetic circuit 340, e.g., the N-pole of the first center magnet 3111, enter the S-pole of the first side magnet 3112 via one side of the first magnetic member 311, then be conducted to the N-pole of the second side magnet 3212 via the inside of the first side magnet 3112 and the second side magnet 3212, enter the S-pole of the common magnetic circuit 340 (e.g., the third side magnet 3212 via the second magnetic gap 3213), and finally reach the S-pole of the common magnetic circuit 340 (e.g., the first center magnet 3111 via the first center magnet 3111).
Referring to fig. 11, for example, the magnetic induction line of one of the magnetic circuits is emitted from the N pole of the first center magnet 3111, enters the S pole of the first side magnet 3112 through the upper left side of the common magnetic circuit 340, then passes through the inside of the first side magnet 3112 and the second side magnet 3212 to the N pole of the second side magnet 3212, enters the S pole of the second center magnet 3211 through the second magnetic gap 3213 from the N pole of the second side magnet 3212, and finally reaches the N pole of the first center magnet 3111 through the second center magnet 3211 and the first center magnet 3111.
Referring to fig. 11, the magnetic induction line of the other magnetic circuit is emitted from the N pole of the first center magnet 3111, enters the S pole of the first side magnet 3112 through the upper right side of the common magnetic circuit 340, is conducted to the N pole of the second side magnet 3212 through the inside of the first side magnet 3112 and the second side magnet 3212, enters the S pole of the second center magnet 3211 from the N pole of the second side magnet 3212, and finally reaches the N pole of the first center magnet 3111 through the second center magnet 3211 and the first center magnet 3111.
In the magnetic circuit, a part of the magnetic field between the N pole of the second side magnet 3212 and the S pole of the second center magnet 3211 is perpendicular to the side surface of the second center magnet 3211, that is, a part of the magnetic field in the second magnetic gap 3213 in the magnetic circuit is perpendicular to the side surface of the second center magnet 3211, so that the magnetic induction line in the second magnetic gap 3213 can vertically penetrate through the side wall of the second voice coil 322, and the second voice coil 322 after being electrified can move along the thickness direction (the direction where z is shown in fig. 11) of the second voice coil 322 under the action of the magnetic field in the second magnetic gap 3213.
In addition, the second side magnet 3212 is sleeved on the outer periphery of the second center magnet 3211, and the magnetism of the second side magnet 3212 opposite to that of the first side magnet 3112 is opposite, so that the second side magnet 3212 and the first side magnet 3112 are magnetized in the same direction, and accordingly, the first side magnet 3112 has an enhancement function on the magnetic field generated by the first magnetic member 311, and accordingly, the first magnetic member 311 also has an enhancement function on the magnetic field generated by the second side magnet 3212, and in addition, the second side magnet 3212 also has an enhancement function on the magnetic field generated by the second center magnet 3211, that is, the magnetic induction intensity of the second magnetic member 321 is improved, and the magnetic induction intensity received by the first voice coil 312 and the second voice coil 322 is improved, so that the output capacities of the first sounding unit 310 and the second sounding unit 320 are improved.
In a specific arrangement, the second center magnet 3211 may be a single magnet (see fig. 8), or may be formed by splicing a plurality of magnets. In addition, the second center magnet 3211 may be a circular magnet, a square magnet, or a magnet with other shapes, for example, the second center magnet 3211 may also be a magnet with other irregular shapes, and the shape of the second center magnet 3211 is not limited in the embodiment of the present application, and may be specifically selected according to actual needs.
The second side magnet 3212 may be a single side magnet (see fig. 8) that is fitted around the outer periphery of the second center magnet 3211, or may be a side magnet formed by a plurality of bar magnets that are wound around the second center magnet 3211. Wherein, two adjacent bar magnets can be arranged at intervals or can be mutually butted. In addition, the second side magnet 3212 may be a ring magnet, a square ring magnet or other shaped side magnets, and the shape of the second side magnet 3212 is not limited in the embodiment of the present application, and may be specifically selected according to practical needs.
Referring to fig. 10, the second magnetic gap 3213 in the second magnetic member 321 is disposed near the first magnetic gap 3113 in the first magnetic member 311, for example, the second magnetic gap 3213 is aligned with the first magnetic gap 3113 along one side perpendicular to the thickness direction (for example, the direction shown by x in fig. 10) of the first voice coil 312, or the second magnetic gap 3213 overlaps with the projection of the first magnetic gap 3113 in the z-direction.
The side of the second magnetic gap 3213 in the x direction may be a side surface of the second center magnet 3211 or an inner edge side surface of the second side magnet 3212.
By arranging the second magnetic gap 3213 close to the first magnetic gap 3113, the second magnetic gap 3213 is arranged at a position with larger magnetic induction intensity in the magnetic circuit, so as to increase the magnetic induction intensity perpendicular to the side wall of the second voice coil 322 in the second magnetic gap 3213, thereby increasing lorentz force applied to the second voice coil 322, and improving the low-frequency output capability, namely loudness, of the second sound generating unit 320.
Of course, in some examples, an end of the second side magnet 3212 facing away from the first voice coil 312 may be provided with an annular magnetic conducting member (not shown in the drawing), where the annular magnetic conducting member is sleeved on the outer periphery of the second center magnet 3211, and a second magnetic gap 3213 is formed between the annular magnetic conducting member and the second center magnet 3211, so as to avoid that the first side magnet 3112 and the second center magnet 3211 are directly magnetically connected.
The shape of the annular magnetic conductive member can include, but is not limited to, a circular ring or a square ring.
By providing the annular magnetic conductive member at the end of the first side magnet 3112 facing away from the first voice coil 312, the magnetism of one end of the first side magnet 3112 is stably conducted to the annular magnetic conductive member, so that a closed magnetic circuit is formed between the annular magnetic conductive member and the fourth side of the second center magnet 3211, that is, the magnetic induction line of the magnetic circuit is emitted from one end of the magnetic circuit and enters into the other end of the magnetic circuit.
For example, the first side of the first center magnet 3111 is N pole, the fourth side of the second center magnet 3211 is S pole, the ring-shaped magnetic conductive member stably conducts the magnetic induction line emitted from the N pole of the first center magnet 3111 to the second end of the ring-shaped magnetic conductive member 342, so that a part of the magnetic induction line emitted from the second end of the ring-shaped magnetic conductive member enters the S pole of the second center magnet 3211 through the second magnetic gap 3213, that is, a magnetic field perpendicular to the side of the second center magnet 3211 is formed between the ring-shaped magnetic conductive member and the second center magnet 3211, in other words, the fourth side of the second side magnet 3212 forms a closed magnetic circuit with the ring-shaped magnetic conductive member 342 perpendicular to the side of the second center magnet 3211, so as to be perpendicular to the side of the second voice coil 322, so that the second voice coil 322 after being energized generates a lorentz force parallel to the thickness direction of the second voice coil 322, thereby ensuring the voice coil to move in the thickness direction.
Referring to fig. 8 to 10, the common magnetic circuit 340 further includes a washer 341, where the washer 341 is located on the fourth side of the second magnetic element 321, so as to concentrate a magnetic induction line of the fourth side of the second magnetic element 321 on the fourth side of the second magnetic element 321, so as to form a magnetic loop, ensure that a magnetic gap of the second magnetic element 321, for example, the second voice coil 322 in the second magnetic gap 3213 receives a stronger magnetic induction intensity, and ensure the loudness of the second sound generating unit 320. In addition, the arrangement of the washer 341 simplifies the structure of the common magnetic circuit system 340, and improves the manufacturing efficiency of the speaker 300.
Wherein the washer 341 may be a fastener, in some embodiments the washer 341 may be a washer, such as a spring washer, a metal washer, or the like.
Referring to fig. 8-10, in some examples, the washer 341 may include a central washer 3411 and Bian Huasi 3412, wherein Bian Huasi 3412 is sleeved on the outer circumference of the central washer 3411 in a third cross section that is perpendicular to the thickness direction (refer to the z direction in fig. 10) of the first magnetic member 311. It is understood that, in the embodiment of the present application, the thickness direction of the first magnetic member 311 is consistent with the thickness direction of the washer 341, and reference is made to the z direction in fig. 10. Wherein the central washer 3411 is located on the fourth side surface of the second central magnet 3211, the Bian Huasi 3412 is located on the fourth side surface of the second side magnet 3212, and a third gap 3413 is formed between the outer edge of the central washer 3411 and the inner edge of the Bian Huasi 3412, the third gap 3413 is in communication with the second magnetic gap 3213, and at least a portion of the second voice coil 322 is inserted into the third gap 3413 and the second magnetic gap 3213.
By disposing the central washer 3411 at one end of the second central magnet 3211 and disposing the Bian Huasi 3412 at one end of the second side magnet 3212, a magnetic field perpendicular to the side of the central washer 3411 or Bian Huasi 3412 is generated in the third gap 3413 between the central washer 3411 and Bian Huasi 3412, and when at least a portion of the second voice coil 322 is inserted into the third gap 3413 and the second magnetic gap 3213, the magnetic fields in the second magnetic gap 3213 and the third gap 3413 are perpendicular to the side wall of the second voice coil 322, thereby increasing the magnetic induction intensity to which the second voice coil 322 is subjected, and thus increasing the low frequency loudness of the speaker 300.
As shown in fig. 12, it is known through simulation experiments that, in some examples, the magnetic induction of the portion of the washer 341 near the third gap 3413 may reach about 1.7T at maximum, so that the second voice coil 322 located in the third gap 3413 is subjected to a stronger magnetic induction.
The constituent materials of the washer 341 include, but are not limited to, magnetic conductive materials such as iron, low carbon steel or iron aluminum, and the like, and can be specifically selected according to actual needs. In addition, the washer 341 may be adhered or magnetically adsorbed on a surface of the second magnetic member 321 opposite to the first magnetic member 311, and the connection manner between the washer 341 and the second magnetic member 321 is not limited in the embodiment of the application.
Referring to fig. 8 and 9, in order to improve the magnetic conduction effect between the first magnetic element 311 and the second magnetic element 321, the common magnetic circuit 340 of the embodiment of the present application may further include a magnetic conduction element 342, where the magnetic conduction element 342 is located between the first magnetic element 311 and the second magnetic element 321, and one side of the magnetic conduction element 342 is attached to the surface of the first magnetic element 311, and the other side of the magnetic conduction element 342 is attached to the surface of the second magnetic element 321, so that on one hand, the magnetic conduction effect at the junction between the first magnetic element 311 and the second magnetic element 321 is improved, the loss of the magnetic field generated by the first magnetic element 311 and the second magnetic element 321 at the junction thereof is reduced, and the magnetic induction intensity of the magnetic circuit is ensured, thereby improving the loudness of the loudspeaker 300 in the working frequency band.
As shown in fig. 12, it is known through simulation experiments that, in some examples, the magnetic induction intensity of the local area on the magnetic conductive member 342 may reach about 2.5T.
On the other hand, the first magnetic member 311, the second magnetic member 321, and the magnetic conductive member 342 are stacked along the thickness direction of the first voice coil 312, so that the occupation size of the common magnetic circuit 340 in the thickness direction perpendicular to the first voice coil 312 is reduced, the magnetic circuit loss of the common magnetic circuit 340 in the thickness direction perpendicular to the first voice coil 312 can be reduced, the magnetic induction intensity received by the first voice coil 312 and the second voice coil 322 is ensured, and the size of the speaker 300 in the radial direction (for example, the x direction in fig. 10) is also reduced. In addition, the above arrangement of the common magnetic circuit system 340 simplifies the structure of the common magnetic circuit system 340 and improves the assembly efficiency of the speaker 300.
In an embodiment of the present application, the radial dimension of the speaker 300 may be, for example, 6mm-14mm in diameter. For example, the diameter of the speaker 300 may be a suitable value of 6mm, 8mm, 10mm, or 14mm, and may be specifically adjusted according to practical needs.
In addition, in the example corresponding to fig. 10, the thickness of the speaker 300 may be 3.5mm-7mm, for example, the thickness of the speaker 300 may be 3.5mm, 4mm, 6.5mm, or 7mm, which may be adjusted according to practical needs, such as the size of the inner cavity of the earphone.
It is understood that the thickness of the speaker 300 includes only the distance between the structural members on the opposite sides of the speaker 300 in the thickness direction, for example, in the example corresponding to fig. 10, the thickness of the speaker 300 refers to the distance between the first diaphragm 313 and the first cover 360. For the example corresponding to fig. 14, the thickness of the speaker 300 is the distance between the second cover 370 and the first cover 360.
The thickness of the first magnetic member 311 may be 0.45mm-1mm, for example, the thickness of the first magnetic member 311 may be a suitable value such as 0.45mm, 0.5mm, 0.7mm or 1mm, and may be specifically adjusted according to actual needs (for example, a magnetic field strength requirement or an earphone cavity size). The thickness of the second magnetic element 321 may be 0.7mm-1.5mm, for example, the thickness of the second magnetic element 321 may be 0.7mm, 0.9mm, 1.2mm or 1.5mm, which may be adjusted according to practical needs. The thickness of the magnetic conductive member 342 may be 0.2mm-0.5mm, for example, the thickness of the magnetic conductive member 342 may be a suitable value such as 0.2mm, 0.3mm, 0.4mm or 0.5mm, and may be specifically adjusted according to practical needs.
By setting the thickness of the magnetic conductive member 342 within the above range, the magnetic conductive effect between the first magnetic member 311 and the second magnetic member 321 is ensured, and the influence of the excessive thickness of the magnetic conductive member 342 on the miniaturization of the speaker 300 is avoided.
In addition, by setting the thicknesses of the first magnetic element 311 and the second magnetic element 321 within the above range, on one hand, it can be ensured that the magnetic induction intensity of the magnetic circuit system (i.e., the common magnetic circuit system 340) formed by the first magnetic element 311 and the second magnetic element 3214 can meet the sensitivity requirement of the actual vibration assembly (e.g., the first vibration assembly 312a and the second vibration assembly 322 a), and on the other hand, it can be avoided that the thickness of the first magnetic element 311 or the second magnetic element 321 is too large to occupy the size in the speaker 300, thereby affecting the miniaturization development of the speaker 300.
The magnetic conductive member 342 may be made of a magnetic conductive material such as iron, low carbon steel or iron aluminum, and may be selected according to practical needs.
Referring to fig. 8, the magnetic conductive member 342 may be a magnetic conductive sheet sandwiched between the first magnetic member 311 and the second magnetic member 321, for example. It is understood that the magnetic conductive sheet may completely cover the abutting surfaces of the first magnetic member 311 and the second magnetic member 321, in other words, the magnetic conductive members 342 are disposed between the abutting surfaces of the first magnetic member 311 and the second magnetic member 321. In some examples, the magnetic conductive member 342 may be disposed in a partial region between the abutting surfaces of the first magnetic member 311 and the second magnetic member 321, for example, the magnetic conductive member 342 may be disposed between the first center magnet 3111 and the second center magnet 3211.
The number of the magnetic conductive members 342 may be one or more, for example, one magnetic conductive member 342 such as a magnetic conductive sheet (refer to fig. 8) may be disposed between the first magnetic member 311 and the second magnetic member 321, or a plurality of magnetic conductive members 342 may be disposed between the first magnetic member 311 and the second magnetic member 321, and the plurality of magnetic conductive members 342 are stacked along the thickness direction of the first magnetic member 311.
As can be seen from simulation comparison, compared with a single-moving-coil speaker, the magnetic induction intensity of the second sound generating unit 320 in the embodiment of the application can be improved by 11%, and compared with a single-plane membrane speaker, the magnetic induction intensity of the first sound generating unit 310 in the embodiment of the application can be improved by 26%, thereby improving the loudness of the speaker 300 in the whole frequency band.
Fig. 13 is a graph of performance simulation results of the speaker of fig. 7 within an electronic device. Referring to fig. 13, a curve a is a performance curve of the second sound generating unit 320, a curve b is a performance curve of the first sound generating unit 310, and a dotted line c is a standard line with a sensitivity of-10 dB within 1 kHz. It will be appreciated that curve a may also be considered the performance curve of a moving coil loudspeaker in some examples and curve b may also be considered the performance curve of a planar membrane loudspeaker in some examples.
As can be seen from fig. 13, the high-frequency cut-off frequency of the second sound generating unit 320 is 11kHz, in other words, the operating frequency of the second sound generating unit 320 in the speaker 300 of the embodiment of the present application is within 11 kHz. The high-frequency cut-off frequency of the first sound generating unit 310 is 14kHz, that is, compared with a moving coil speaker, the speaker 300 of the embodiment of the present application is provided with the first sound generating unit 310 at one side of the second sound generating unit 320, so that the frequency band of the speaker 300 is expanded, for example, the sensitivity of the speaker 300 is higher than the standard value at the high frequency between 11kHz and 14kHz, and compared with a single-moving coil speaker, the sensitivity is improved, that is, the transient characteristics such as loudness of the high frequency are improved. In addition, compared with a single-moving-coil loudspeaker, in the loudspeaker 300 provided by the embodiment of the application, the loudness of the loudspeaker 300 is improved by 20dB+ in the high-frequency range between 11kHz and 14kHz, which provides a hardware basis for high-frequency performance debugging.
Referring to fig. 13, the low frequency cut-off frequency of the first sound emitting unit 310 is 8kHz, in other words, the operating frequency of the first sound emitting unit 310 of the speaker 300 may be between 8kHz and 14 kHz. The low frequency cut-off frequency of the second sound generating unit 320 is about 20Hz, so that the frequency band of the speaker 300 is widened compared to the planar membrane speaker, for example, the frequency of the speaker 300 is between 20Hz and 11kHz, the sensitivity thereof is larger than the standard value, and the sensitivity thereof is improved compared to the planar membrane speaker, i.e., the low frequency transient characteristics such as loudness are improved.
In addition, as can be seen from fig. 13, the frequency of the speaker 300 is between 8kHz and 11kHz, and the sensitivity, i.e., the loudness, of the second sound emitting unit 320 is greater than that of the first sound emitting unit 310, the second sound emitting unit 320 is responsible for low frequency sound emission between 20Hz and 11kHz, and the first sound emitting unit 310 is responsible for high frequency sound emission between 11kHz and 14 kHz.
It will be appreciated that in the above example, the common magnetic circuit 340 includes two magnetic elements, such as the first magnetic element 311 in the first sound generating unit 310 and the second magnetic element 321 in the second sound generating unit 320, that is, the magnetic circuit systems of the two sound generating units are fused into the common magnetic circuit 340, and the first vibration assembly 312a and the second vibration assembly 322a are driven at the same time, so as to mutually enhance the magnetic induction intensity of the counterpart unit.
Fig. 14 is a schematic structural diagram of another speaker according to an embodiment of the present application. Referring to fig. 14, in some examples, the common magnetic circuit 340 may include one magnetic member (e.g., the common magnetic member 321 a), that is, the first sound generating unit 310 and the second sound generating unit 320 according to the embodiment of the present application share one magnetic member, and the first vibration assembly 312a and the second vibration assembly 322a are configured to vibrate under the magnetic field of the common magnetic member 321 a.
Referring to fig. 14, for example, the second sound generating unit 320 includes a magnetic member such as a common magnetic member 321a, the second voice coil 322 is positioned in the second magnetic gap 3213 at one side of the common magnetic member 321a and the third gap 3413 of the washer 341, and the first voice coil 312 is positioned at the other side of the common magnetic member 321a. It is understood that, in the examples corresponding to fig. 7 to 11, the second magnetic member 321 of the second sound generating unit 320 may be used as the common magnetic member 321a.
For example, the first magnetic member 311 of fig. 9 may be omitted, and the first vibration member 312a may be located on a side of the common magnetic member 321a (e.g., the second magnetic member 321 of fig. 10) toward the second vibration member 312 a. For example, the common magnetic member 321a includes a first side and a second side in a height direction (shown with reference to a z-direction in fig. 14) of the tub 350, the first voice coil 312 is located at the first side, the first diaphragm 313 is located at a side of the first voice coil 312 facing away from the common magnetic member 321a, and the second voice coil 322 is located at the second side, for example, at least a portion of the second voice coil 322 is located at the common magnetic member 321a. The magnetic fields generated by the common magnetic element 321a on the first side and the second side opposite to each other in the height direction of the basin frame 350 are opposite to each other, so that the magnetic field generated by the common magnetic element 321a can act on the second vibration element 322a, so that the second voice coil 322 of the second vibration element 322a can vibrate in the magnetic field generated by the common magnetic element 321a after being electrified, thereby driving the second vibration film 323 to vibrate, and can also act on the first vibration element 312a, so that the first voice coil 312 of the first vibration element 312a can vibrate in the magnetic field generated by the common magnetic element 321a after being electrified, thereby driving the first vibration film 313 to vibrate, that is, the first vibration element 312a and the common magnetic element 321a together form the first sound generating unit 310, thereby reducing the number of parts of the first sound generating unit 310, simplifying the assembly procedure of the loudspeaker 300, and also reducing the size of the loudspeaker 300, and realizing miniaturization of the loudspeaker 300.
The embodiment of the present application specifically does not limit the arrangement manner of the common magnetic circuit system 340 of the first sound generating unit 310 and the second sound generating unit 320, so long as the magnetic field of the common magnetic circuit system 340 is ensured to act on the first vibration component 312a of the first sound generating unit 310 and the second vibration component 322a of the second sound generating unit 320 at the same time, so as to drive the first vibration component 312a and the second vibration component 322 a.
Fig. 15a is a partial exploded view of fig. 7. Referring to fig. 6 and 15a, in some examples, a first end of each first conductive insert in the first conductive structure 391 has a first conductive terminal, and a second end of each first conductive insert has a first conductive pin, both of which are exposed to an outer surface of the sidewall a of the tub 350. Wherein, two first conductive terminals are used for electrically connecting with the first voice coil 312, and two first conductive pins are used for electrically connecting with an external circuit, so that the first voice coil 312 is electrically connected with the external circuit through two first conductive plugs.
For example, the first conductive terminal 3911a is electrically connected to the positive electrode pin of the first voice coil 312, and the first conductive terminal 3911b is electrically connected to the negative electrode pin of the first voice coil 312. Correspondingly, the first conductive contact pin 3912a is electrically connected with the positive electrode of the external circuit, the first conductive contact pin 3912b is electrically connected with the negative electrode of the external circuit, two pins of the first voice coil 312 are electrically connected with the external circuit, current is ensured to be introduced into the first voice coil 312 by the external circuit, and the first voice coil 312 after being electrified generates Lorentz force under the action of the magnetic field of the magnetic circuit and vibrates under the drive of the Lorentz force.
In the example shown in fig. 9 and 15a, the first voice coil 312 may be wound with a wire in a direction perpendicular to the thickness direction of the first voice coil 312 (refer to the direction shown by z in fig. 9), for example, the first voice coil 312 may be wound with a wire from inside to outside or from outside to inside in the x direction, and then the positive electrode lead and the negative electrode lead of the first voice coil 312 may be both ends of the wire forming the first voice coil 312, respectively, and both lie in a plane perpendicular to the z direction (for example, an x-y plane).
Fig. 15b is a partial sectional view of fig. 7, fig. 15c is a schematic structural view of the first vibration assembly of fig. 15a, fig. 16 is an exploded view of fig. 15c, and fig. 17a is a schematic structural view of another view of fig. 15 c. Referring to fig. 15b to 17a, the first sound generating unit 310 according to the embodiment of the present application may further include a circuit board (for example, a first circuit board 315), a portion of the first circuit board 315 is located on a side of the first voice coil 312 opposite to the first magnetic member 311, that is, the first voice coil 312 and the first circuit board 315 are stacked along a height direction (referring to a z direction in fig. 15 b) of the tub 350, and the first circuit board 315 is electrically connected to the first voice coil 312.
In some examples, the first diaphragm 313, the first circuit board 315, and the first voice coil 312 are sequentially stacked in a direction opposite to the z-direction (as shown in fig. 9 and 16), and thus, the first circuit board 315 may be connected to a surface of the first diaphragm 313 facing the first voice coil 312 by adhesion or the like, so as to ensure structural stability of the first circuit board 315 in the first vibration assembly 312a, thereby ensuring reliability of electrical connection between the first circuit board 315 and the first voice coil 312.
Referring to fig. 15b, another portion of the first circuit board 315 may extend to the outer sidewall of the tub 350 and be electrically connected to the first ends of the two first conductive inserts, i.e., the first voice coil 312 is connected to the first ends of the two first conductive inserts through the first circuit board 315.
Referring to fig. 7, 15a and 15b, specifically, a portion of the first circuit board 315, for example, the first body portion 3151, is disposed horizontally between the first voice coil 312 and the first diaphragm 313, that is, the first voice coil 312, the first body portion 3151 and the first diaphragm 313 are sequentially stacked along the z direction, for example, the first voice coil 312 is located on an inner surface of the first circuit board 315, the first diaphragm 313 is located on an outer surface of the first circuit board 315, and the first body portion 3151 of the first circuit board 315 is electrically connected with a pin of the first voice coil 312, another portion of the first circuit board 315 extends to an outer side wall of the basin frame 350, for example, an outer edge of the first body portion 3151 of the first circuit board 315 is provided with two first extending portions, that is, a first extending portion 3152a and a first extending portion 3152b, respectively, and the first extending portion 3152a and the first extending portion 3152b may extend to an outer side wall (as shown in fig. 15 b) of the basin frame 350, for example, the two first extending portions may be closely attached to the outer surface of the basin frame 350, and the two first extending portions are electrically connected with the first ends respectively.
For example, the first extension 3152a is electrically connected to a first end of the first conductive insert 391a (e.g., the first conductive terminal 3911 a), and the first extension 3152b is electrically connected to a first end of the first conductive insert 391b (e.g., the first conductive terminal 3911 b), such that the positive and negative leads of the first voice coil 312 are electrically connected to the first ends of the two first conductive inserts through the first flexible circuit board 315.
It should be noted that, the inner surface of the first circuit board 315 refers to a side surface of the first circuit board 315 facing the common magnetic circuit system 340, and the outer surface of the first circuit board 315 refers to a side surface of the first circuit board 315 facing away from the common magnetic circuit system 340.
Thus, the pins of the first voice coil 312 are led out of the frame 350 through the first circuit board 315 and electrically connected to the first conductive terminals outside the frame 350, so as to lead the pins of the first voice coil 312 out of the frame 350.
In addition, the first extension portion of the first circuit board 315 is electrically connected to the two first conductive terminals of the first conductive structure 391, so that the electrical connection between the first voice coil 312 and the first end of the first conductive insert is more convenient and reliable, thereby improving the electrical connection efficiency and reliability between the first voice coil 312 and the first conductive insert.
It will be appreciated that the first body portion 3151 is disposed on the first voice coil 312 in a stacked manner, and the first extension portion may be attached to the outer surface of the sidewall of the tub 350, so that the size of the circuit board, for example, the first circuit board 315 occupying the interior of the speaker 300 is saved, and thus the miniaturization of the speaker 300 can be ensured.
Referring to fig. 15b, the first diaphragm 313 and the circuit board 315 may be located outside the frame 350, and the first diaphragm 313 and the first body 3151 of the first circuit board 315 are located at an end of the frame 350 near the first voice coil 312.
The first diaphragm 313 and the circuit board 315 can be both located outside the basin frame 350, so as to save space inside the basin frame, and thus, the thickness of the common magnetic circuit 340, such as the first magnetic member 311 and the second magnetic member 312, can be increased, so as to enhance the magnetic field strength of the common magnetic circuit 340, and improve the sensitivity of the sounding unit, such as the first sounding unit 310.
The first circuit board 315 may be a flexible circuit board (Flexible Printed Circuit abbreviated as FPC), and the flexible circuit board has better flexibility, so that a portion of the first circuit board 315, for example, the first extension portion 3152, is attached to the outer sidewall of the basin frame 350, and in addition, when the first voice coil 312 is driven by the lorentz force to move along the thickness direction, the first diaphragm 313 can be driven to move along the thickness direction of the first voice coil 312 by abutting against the flexible circuit board, that is, the vibration amplitude of the first diaphragm 313 is ensured by the arrangement of the flexible circuit board.
Referring to fig. 16, illustratively, the first circuit board 315 has a trace layer therein, one end of the trace layer is electrically connected to the first voice coil 312, and the other end of the trace layer extends to an end of the first extension portion and is electrically connected to the first conductive terminal, so that the first voice coil 312 is electrically connected to the first conductive terminal. Illustratively, the trace layer may include, but is not limited to, a copper layer or the like.
In a specific arrangement, the first circuit board 315 includes at least two trace layers, wherein a first end of one trace layer (e.g., the first trace layer a 1) is electrically connected to the positive electrode pin of the first voice coil 312, and a second end of the first trace layer a1 extends to an end of the first extension 3152a and is electrically connected to the first conductive terminal 3911 a.
A first end of another trace layer (e.g., the second trace layer a 2) is electrically connected to the negative lead of the first voice coil 312, and a second end of the second trace layer a2 extends to an end of the first extension 3152b and is electrically connected to the first conductive terminal 3911 b.
It is understood that a portion of the first trace layer a1 and the second trace layer a2 are located in the first body portion 3151, and another portion is located in the first extension portion 3152a and the first extension portion 3152 b. In some embodiments, the first trace layer a1 and the second trace layer a2 may be the same layer of metal layer of the first flexible circuit board 315 in the z-direction, and the first trace layer a1 and the second trace layer a2 may also be different layers of metal layers of the first flexible circuit board 315 in the z-direction.
In addition, referring to fig. 16 and 17a, the first body 3151 of the first circuit board 315 may be provided with a relief hole (for example, a third relief hole 315 a), and the third relief hole 315a may reduce the weight of the first circuit board 315 and increase the amplitude of the first circuit board 315, thereby increasing the vibration amplitude of the first diaphragm 313 and increasing the sensitivity of the first sound generating unit 310.
Referring to fig. 16 and 17a, in some examples, two third extension portions (e.g., third extension portions 3154a and 3154 b) may be provided on an inner wall of the third escape hole 315a, one ends of the third extension portions 3154a and 3154b may be connected to the inner wall of the third escape hole 315a, and the other ends of the third extension portions 3154a and 3154b may be located at an inner cavity of the third escape hole 315 a. Each third extension 3154 is exposed with a portion of the trace layer (e.g., copper sheet) at least on a side facing the first voice coil 312, the copper sheet may serve as a first bonding pad of the trace layer on the surface of the third extension 3154, and the leads of the first voice coil 312 may be soldered to the exposed copper sheet on the third extension 3154, e.g., the first bonding pad.
Referring to fig. 16, for example, a copper sheet exposed on the third extension 3154a, for example, the first pad n1 is a part of the first routing layer a1, the first pad n1 on the third extension 3154a is soldered to the positive electrode pin of the first voice coil 312, a copper sheet exposed on the third extension 3154b, for example, the first pad n2 is a part of the second routing layer a2, the first pad n2 on the third extension 3154b is electrically connected to the negative electrode pin of the first voice coil 312, so that the positive electrode pin and the negative electrode pin of the first voice coil 312 are soldered to the first routing layer a1 and the second routing layer a2 of the first circuit board 315, respectively, and the positive electrode pin and the negative electrode pin of the first voice coil 312 can be led out to the ends of the first extension 3152a and the first extension 3152b through the first routing layer a1 and the second routing layer a2, so that the first extension 3152a is electrically connected to the first conductive terminal 11a 39 b, and the first extension 3152b is electrically connected to the first conductive terminal 11a 39 b 11.
Referring to fig. 16, an annular hole (for example, a first annular hole 315 b) may be formed in a region of the first body portion 3151 near the outer edge, and the first annular hole 315b and the third escape hole 315a divide the first body portion 3151 into an inner ring 315e and an outer ring 315f. The third extension portion 3154a and the third extension portion 3154b are located at the inner edge of the inner ring 315e and electrically connected to the pins of the first voice coil 312, and a plurality of connection portions (for example, first connection portions 3155) may be disposed in the first annular hole 315b, and the plurality of first connection portions 3155 are disposed at intervals along the circumferential direction of the first annular hole 315b, one end of each first connection portion 3155 is connected to the inner ring 315e, and the other end of each first annular hole 315b is connected to the outer ring 315f, so as to ensure that the first circuit board 315 is a complete structure, so that the first circuit board 315 is assembled conveniently.
Wherein, two first extension parts are formed on the outer edge of the outer ring 315f, each of which is connected with the inner ring 315e through the outer ring 315f and the first connection part 3155, in other words, the pins of the first voice coil 312 are electrically connected with the first extension part 3152 through the inner ring 315e, the first connection part 3155 and the outer ring 315f.
Referring to fig. 16, for example, the positive electrode pin of the first voice coil 312 is electrically connected to the first routing layer a1 in the inner ring 315e through the first bonding pad n1 on the third extension portion 3154a, and then sequentially electrically connected to the first routing layer a1 in the first extension portion 3152a through one of the first connection portion 3155 and the first routing layer a1 in the outer ring 315f, so that the positive electrode pin of the first voice coil 312 is led out to the first extension portion 3152a and electrically connected to the first conductive terminal 3911a (see fig. 15 b).
Correspondingly, the negative electrode pin of the first voice coil 312 is electrically connected with the second wiring layer a2 in the inner ring 315e through the first bonding pad n2 on the third extension portion 3154b, and then sequentially electrically connected with the second wiring layer a2 in the first extension portion 3152b through the other first connection portion 3155 and the second wiring layer a2 in the outer ring 315f, so that the negative electrode pin of the first voice coil 312 is led out onto the first extension portion 3152b and electrically connected with the first conductive terminal 3911 b.
With continued reference to fig. 16, each first connecting portion 3155 has an "S" structure, that is, at least a portion of two ends of each first connecting portion 3155 is different from an extending direction of the middle portion, so as to optimize resonance problem of the first routing layer and the second routing layer.
In addition, the provision of the first annular hole 315b also reduces the weight of the first circuit board 315, thereby increasing the vibration amplitude of the first circuit board 315, so that the vibration amplitude of the first vibration assembly 312a is increased, thereby improving the audio performance of the first sound generating unit 310.
Referring to fig. 14 and 16, a steel ring 380 is further provided on the inner surface of the first circuit board 315, the steel ring 380 is positioned on the inner surface of the outer edge of the first circuit board 315, and the first circuit board 315 is connected to the second end of the tub 350 through the steel ring 380.
By arranging the first conductive structures 391 in the side walls of the basin frame 350, the first sound generating unit 310 is modularized, for example, when the first sound generating unit 310 is assembled, the first circuit board 315 of the first sound generating unit 310 is electrically connected with two first conductive terminals in the first conductive structures 391 only after the first sound generating unit 310 is assembled in the basin frame 350, the first sound generating unit 310 is assembled, and then, an external circuit is electrically connected with two first conductive pins in the first conductive structures 391 only, so that the first voice coil 312 in the first sound generating unit 310 can be electrified, the assembly process of the first sound generating unit 310 is simplified, and the assembly efficiency of the loudspeaker 300 is improved.
Referring to fig. 15b and 16, illustratively, a first mounting hole 315c may be formed on the first extension 3152a and the first extension 3152b, two first conductive terminals respectively pass through the corresponding first mounting holes 315c, and the first conductive terminals are electrically connected to the inner wall of the first mounting hole 315c, for example, the first conductive terminal 3911a passes through the first mounting hole 315c on the first extension 3152a and is electrically connected to the inner wall of the first mounting hole 315c, and the first conductive terminal 3911a passes through the first mounting hole 315c on the first extension 3152b and is electrically connected to the inner wall of the first mounting hole 315 c.
Illustratively, a circumference of an inner wall of each first mounting hole 315c is exposed with a ring-shaped copper sheet, which may serve as a second bonding pad, and is welded to an outer sidewall of the first conductive terminal such that the first extension is electrically connected to the first conductive terminal.
It will be appreciated that the copper loop sheet is part of the trace layer within the first circuit board 315. For example, one end of the first routing layer a1 is exposed to the inner surface of the third extension portion 3154a, so as to form a first bonding pad n1 on the third extension portion 3154a and be soldered to the positive electrode lead of the first voice coil 312, the other end of the first routing layer a1 is exposed to the inner edge of the first mounting hole 315c of the first extension portion 3152a, and a second bonding pad (shown as m1 in fig. 16) is formed around the inner edge of the first mounting hole 315c, the second bonding pad m1 may be a ring-shaped copper sheet, and the first extension portion 3152a is soldered to the first conductive terminal 3911a through the second bonding pad m1, so that the first voice coil 312 is electrically connected to the first conductive terminal 3911a through the first routing layer a1 in the first circuit board 315.
Accordingly, one end of the second routing layer a2 is exposed to the inner surface of the third extension portion 3154a, so as to form a first bonding pad n2 on the third extension portion 3154a and be soldered to the negative electrode pin of the first voice coil 312, the other end of the second routing layer a2 is exposed to the inner edge of the first mounting hole 315c of the first extension portion 3152b, and a second bonding pad (shown as m2 in fig. 16) is formed around the inner edge of the first mounting hole 315c, the second bonding pad m2 may be a ring-shaped copper sheet, and the first extension portion 3152b is soldered to the first conductive terminal 3911b through the second bonding pad m2, so that the negative electrode pin of the first voice coil 312 is electrically connected to the first conductive terminal 3911b through the second routing layer a2 in the first circuit board 315.
By providing the first mounting holes 315c on the first extending portions 3152a and 3152b and penetrating the first conductive terminals into the corresponding first mounting holes 315c, electrical connection between the first extending portions and the first conductive terminals is facilitated, for example, when the first extending portions 3152a are welded to the first conductive terminals 3911a, soldering can be performed along an annular gap between an inner wall of the first mounting holes 315c and a side wall of the first conductive terminals 3911a, so that welding between the first extending portions 3152a and the first conductive terminals 3911a is simpler and faster, and reliability of electrical connection between the first extending portions 3152a and the first conductive terminals 3911a is improved.
As shown with reference to fig. 6 and 15b, in some examples, each first conductive insert in the first conductive structure 391 may further include a first body portion. One end of the first main body part is electrically connected with the first conductive terminal, and the other end of the first main body part is electrically connected with the first conductive contact pin.
Referring to fig. 6 and 15b, for example, in the first conductive insert 391a of the first conductive structure 391, one end of the first conductive terminal 3911a is electrically connected to the first extension 3152a, the other end of the first conductive terminal 3911a is electrically connected to the first conductive pin 3912a through the first body 3913a, one end of the first conductive pin 3912a is exposed to the outer surface of the sidewall of the tub 350 and is electrically connected to an external circuit such as a flexible circuit board, that is, the first conductive terminal 3911a is electrically connected to the external circuit through the first body 3913a and the first conductive pin 3912a such that the first extension 3152a is electrically connected to the external circuit, and such that one of the pins, for example, the positive electrode pin, of the first voice coil 312 is electrically connected to the external circuit through the first extension 3152a and the first conductive insert 391 a.
As shown in fig. 6 and 15b, correspondingly, in the first conductive plug 391b of the first conductive structure 391, one end of the first conductive terminal 3911b is electrically connected to the first extension 3152b, the other end of the first conductive terminal 3911b is electrically connected to the first conductive pin 3912b through the first body portion 3913b, one end of the first conductive pin 3912b is exposed to the outer surface of the sidewall of the tub 350 and is electrically connected to an external circuit such as a flexible circuit board, that is, the first conductive terminal 3911b is electrically connected to the external circuit through the first body portion 3913b and the first conductive pin 3912b, so that the first extension 3152b is electrically connected to the external circuit, and thus the other pin of the first voice coil 312 such as the negative pin is electrically connected to the external circuit through the first extension 3152b and the first conductive plug 391 b.
Referring to fig. 6, in some examples, each of the first body portions may have a first bending portion thereon, for example, the first body portion 3913a has a first bending portion 3914a thereon, the first body portion 3913b has a first bending portion 3914b thereon, the first body portion 3913a and the first body portion 3913b are penetrated inside the sidewall of the tub 350 in the circumferential direction of the tub 350, and the first bending portion 3914a and the first bending portion 3914b are penetrated inside the sidewall of the tub 350 in the thickness direction of the sidewall of the tub 350, that is, the fitting angle of the first body portion and the first bending portion of each of the first conductive inserts with the tub 350 is different, thereby improving the stability of each of the first conductive inserts in the first conductive structure 391 inside the sidewall of the tub 350, and thus improving the electrical connection stability of the first conductive structure 391 with the first sound generating unit 310 and the external circuit.
Referring to fig. 6, the angle between the first bending portion and the corresponding first main body portion may be between 0 ° -180 °, for example, the angle α between the first bending portion 3914a and the first main body portion 3913a may be between 0 ° -180 °. For example, the angle between the first bending portion 3914a and the first main portion 3913a may be a suitable angle of 45 °, 90 °, 135 °, or the like, so as to ensure that the extending directions of the first bending portion 3914a and the first main portion 3913a inside the side wall of the basin frame 350 are different.
It is understood that the first bending portion may be located at a side of the first body portion facing the inner surface of the sidewall of the tub 350. For example, the first bending portion 3914a may be located at a side of the first body portion 3913a facing the inner surface of the sidewall of the frame 350, that is, the first bending portion 3914a extends from the side of the first body portion 3913a toward the inner surface of the sidewall of the frame 350. In some examples, the first bending portion 3914a may also be located on a side of the first main portion 3913a facing the outer surface of the sidewall of the frame 350, that is, the first bending portion 3914a extends from the side of the first main portion 3913a to the outer surface of the sidewall of the frame 350.
Referring to fig. 15a and 15b, the outer surface of the side wall of the basin 350 may have a first connection area 350a, where the first connection area 350a is located between two first conductive terminals 3911a (3911 b), i.e., the first connection area 350a is located between the first conductive terminals 3911a and 3911b, and two first conductive pins (e.g., the first conductive pins 3912a and 3912 b) are located in the first connection area 350a, i.e., positive and negative pins of the first voice coil 312 are led from the first conductive terminals 3911a and 3911b that are farther from each other to the first conductive pins 3912a and 3912b that are closer to each other, so that only one circuit board, such as a flexible circuit board, may be directly soldered to the two first conductive pins in the first connection area 350a, so that current may be introduced into the first voice coil 312, simplifying the electrical connection structure between the positive and negative pins of the first 312 and the external circuit, and simplifying the assembly process steps of the speaker 300 according to the embodiment of the application.
For example, before the first vibration assembly 312a is assembled, the first vibration assembly 312a may be first mounted on the second sound generating unit 320, and two first extending portions of the first circuit board 315 located in the first vibration assembly 312a are electrically connected with two first conductive terminals of the basin frame 350, so that the assembly of the first sound generating unit 310 may be completed, and only an external circuit, such as a flexible circuit board, is electrically connected with a first conductive pin outside the basin frame 350, thereby realizing the modularity of the first sound generating unit 310, simplifying the lead procedure of the first sound generating unit 310, and improving the assembly efficiency of the speaker 300.
Fig. 17b is a schematic view of a portion of the structure of fig. 7. Referring to fig. 6, 15B and 17B, in some examples, the second end of each second conductive insert of the second conductive structure 392 has a second conductive pin, for example, the first end of the second conductive insert 392a is located in the tub 350 and is electrically connected (e.g., soldered) to the positive lead (see B in fig. 17B) of the second voice coil 322, the second end of the second conductive insert 392a has a second conductive pin 3921a, which is exposed to the outer surface of the sidewall a of the tub 350 and is electrically connected to an external circuit, for example, the second conductive pin 3921a is electrically connected to a flexible circuit board having an audio encoder connected to one end, such that the audio encoder is electrically connected to the positive electrode of the second voice coil 322 through the flexible circuit board and the second conductive insert 392 a.
Accordingly, the first end of the second conductive insert 392b is located in the tub 350 and is electrically connected (e.g., soldered) to the negative electrode pin of the second voice coil 322, the second end of the second conductive insert 392b has a second conductive pin 3921b (shown with reference to fig. 6 and 15 b), the second conductive pin 3921b is exposed to the outer surface of the sidewall a of the tub 350 and is electrically connected to an external circuit, for example, the second conductive pin 3921b is electrically connected to a flexible circuit board having an audio encoder connected to one end thereof, such that the audio encoder is electrically connected to the negative electrode of the second voice coil 322 through the flexible circuit board and the second conductive insert 392b, such that the audio encoder transmits a current signal to the second voice coil 322 through two second conductive inserts, such that the second voice coil 322 can generate a lorentz force under the magnetic field, and vibrate in the height direction of the tub 350 (e.g., z direction in fig. 17 b).
The second voice coil 322 of the second sounding unit 320 is electrically connected with the external circuit through two second conductive pins in the second conductive structure 392, so that the second voice coil 322 is electrically connected with the external circuit, and the connection between the second voice coil 322 and the external circuit is more reliable, thereby improving the reliability of the electrical connection between the second voice coil 322 and the external circuit.
In addition, by arranging the second conductive structure 392 on the frame 350, the second sound generating unit 320 is modularized, for example, when the second sound generating unit 320 is assembled into the frame 350, two pins of the second voice coil 322 in the second sound generating unit 320 are electrically connected with first ends (one ends located in the frame 350) of two second conductive plug-ins, so that the assembly of the second sound generating unit 320 is completed, and then, only an external circuit is electrically connected with second conductive plug-ins at second ends of the two second conductive plug-ins, so that the second voice coil 322 in the second sound generating unit 320 can be electrified, thereby simplifying the assembly line procedure of the second sound generating unit 320 and improving the assembly efficiency of the loudspeaker.
Referring to fig. 6, each of the second conductive structures 392 may further include a second bent portion connected with a corresponding second conductive pin, for example, in the second conductive structure 392, the second conductive plug 392a may include a second conductive pin 3921a and a second bent portion 3922a connected to the second conductive pin 3921a, and the second conductive plug 392b may include a second conductive pin 3921b and a second bent portion 3922b connected to the second conductive pin 3921 b.
The second bending portion of each second conductive insert is embedded in the sidewall of the tub 350, for example, the second bending portion 3922a and the second bending portion 3922b (refer to fig. 15 b) are embedded in the sidewall of the tub 350, so as to improve the stability of each second conductive insert in the second conductive structure 392 in the sidewall of the tub 350, thereby improving the electrical connection stability of the second conductive structure 392 with the second sound generating unit 320 and the external circuit.
Referring to fig. 6, the second bending part may include two parts, such as a third part C, one end of which is connected to the corresponding second conductive pin, and a fourth part D, the other end of which is connected to the fourth part D. The extending directions of the third portion C and the fourth portion D may be different, for example, the third portion C may extend in a direction perpendicular to the second conductive pin, that is, the third portion C may be perpendicular to the second conductive pin, and the fourth portion D may extend in a direction parallel to the second conductive pin, that is, the fourth portion D may be parallel to the second conductive pin, that is, the fourth portion D is perpendicular to the third portion C.
Taking the second bending portion 3922a as an example, the second bending portion 3922a may include a third portion C and a fourth portion D, where one end of the third portion C is connected to the second conductive pin 3921a and the other end of the third portion C is connected to the fourth portion D. Wherein the extending directions of the third portion C and the fourth portion D may be different, for example, the third portion C may extend in a direction perpendicular to the second conductive pin 3921a, that is, the third portion C may be perpendicular to the second conductive pin 3921a, and the fourth portion D may extend in a direction parallel to the second conductive pin 3921a, that is, the fourth portion D may be parallel to the second conductive pin 3921a, that is, the fourth portion D is perpendicular to the third portion C.
In this way, the two portions of the second bending portion, for example, the second bending portion 3922a, may extend in different directions inside the sidewall of the frame 350, for example, the third portion C extends in the height direction of the frame 350, the fourth portion D extends in the thickness direction of the sidewall of the frame 350, in addition, the second bending portion 3922a and the second conductive pin 3921a also extend in different directions inside the sidewall of the frame 350, for example, the second conductive pin 3921a extends in the thickness direction of the sidewall of the frame 350, the third portion C of the second bending portion 3922a extends in the height direction of the frame 350, that is, the assembly directions of the three portions of the second conductive plug 392a in the sidewall of the frame 350 are different, so that the second conductive plug 392a formed by the second bending portion 3922a and the second conductive pin 3921a can be stably embedded in the sidewall of the frame 350, and the reliability of the electrical connection between the second conductive structure 392 and the second sound generating unit 320 and the external circuit is improved.
In addition, the second conductive pin 3921a may be electrically connected to a pin of the second voice coil 322 through the fourth portion D of the second bending portion 3922 a. For example, the fourth portion D of the second bending portion 3922a may be exposed on the inner sidewall of the frame 350, and the pin of the second voice coil 322 may be soldered on the fourth portion D, so that the second voice coil 322 is electrically connected to the second conductive pin 3921 a.
Referring to fig. 15a, in some examples, two second conductive pins 3921a (3921 b) may be located in the first connection area 350a of the frame 350, that is, two second conductive pins 3921a (3921 b) and two first conductive pins 3912a (3912 b) are located in the first connection area 350a, so that only one circuit board, such as a flexible circuit board, may be directly soldered to the two first conductive pins and the two second conductive pins in the first connection area 350a by the outside, and current may be introduced into the first voice coil 312 and the second voice coil 322, so that the electrical connection structure between the positive and negative pins of the first voice coil 312 and the second voice coil 322 and the external circuit is simplified, and the electrical connection procedure between the two sound generating units of the speaker 300 and the external circuit is simplified, thereby facilitating the overall application of the speaker 300 according to the embodiment of the present application.
Referring to fig. 15a, two first conductive pins 3912a (3912 b) may be arranged in one row, and two second conductive pins 3921a (3921 b) may be arranged in another row, for example, the first conductive pins 3912a and the first conductive pins 3912b are located in a first row of the first connection area 350a, and the second conductive pins 3921a and the second conductive pins 3921b are located in a second row of the first connection area 350a, so that an external circuit, for example, a flexible circuit board, is soldered with the two first conductive pins and the two second conductive pins, thereby improving the assembly efficiency of the speaker 300 and the external circuit according to the embodiment of the application.
The first and second rows of the first connection region 350a are spaced apart along the height direction (see z direction in fig. 15 a) of the basin frame 350. Wherein the first row is adjacent to the second end of the frame 350 (i.e., the end adjacent to the first vibration assembly 312 a), and the second row is adjacent to the first end of the frame 350 (i.e., the end adjacent to the second vibration assembly 322 a), as shown in fig. 15a, and the first row is above the second row.
For example, an external circuit such as a flexible circuit board may be soldered to the second conductive pins of the second row to make an electrical connection between the external circuit and the second voice coil 322, and the flexible circuit board may be soldered to the first conductive pins of the first row to make an electrical connection between the external circuit and the first voice coil 312.
In addition, the two first conductive pins and the two second conductive pins are arranged in a plurality of rows in the first wiring area 350a, so that the occupied size of the two first conductive pins and the two second conductive pins in one direction of the first wiring area 350a is reduced, the arrangement size of the first wiring area 350a in one direction can be reduced when the arrangement is performed, space is saved for other areas of the basin frame 350, and in addition, the width of an external circuit such as a circuit board can be reduced, so that the cost is saved, and the space occupied by the external circuit in the electronic equipment is also saved.
Referring to fig. 15a, in a specific arrangement, the surface of the first connection region 350a may be a slope, the slope being inclined toward the inside of the frame 350 on the side close to the second end (E in fig. 15 a) of the frame 350, and the slope being inclined toward the outside of the frame 350 on the side close to the first end (F in fig. 15 a) of the frame 350, that is, the distance between the slope and the inner surface of the side wall of the frame 350 is gradually reduced in the direction from the first end F to the second end E (z direction in fig. 15 a) of the frame 350, so that the outer edge of the first connection region 350a is more open, the blocking of the frame 350 on the outer circumference of the first connection region 350a is reduced, and the external circuit such as a circuit board is not limited by the space of the first connection region 350a, thereby facilitating the soldering of the circuit board on the first conductive pins and the second conductive pins of the first connection region 350 a.
In some examples, at least one of a pair of opposite edges of the inclined surface of the first connection region 350a may extend to both end surfaces of the tub 350 to increase the spatial freedom of the upper and lower edges of the first connection region 350a, thereby facilitating the attachment of an external circuit such as a flexible circuit board to the surface of the connection region to achieve soldering with the second ends of the respective conductive plugs without being limited by the size of the connection region.
It should be noted that, the two opposite edges refer to two opposite edges of the inclined surface of the first connection area 350a along the height direction of the basin frame 350. For example, the inclined surface of the first connection region 350a may extend to the second end E of the tub 350 along the upper edge of the tub 350 in the height direction, so that the spatial degree of freedom of the upper edge of the first connection region 350a is increased, so that the length of an external circuit such as a flexible circuit board is not limited by the space of the connection region, thereby facilitating the flexible circuit board to be attached to the inclined surface of the first connection region 350a and soldered with the second end of each conductive card.
In addition, in the inclined surface of the first connection region 350a, the other two opposite edges may be flush with other regions of the outer surface of the sidewall of the tub 350, or may be higher than other regions of the sidewall of the tub 350. It should be noted that the other pair of opposite edges refers to two edges of the first connection region 350a opposite to each other in the circumferential direction of the tub 350.
For example, the protrusion 350c may be formed on the outer surface of the sidewall a of the tub 350, and the first connection region 350a is located on the surface of the protrusion 350c, for example, a surface of the protrusion 350c facing away from the inner cavity of the tub 350 may be formed as a slope, such that both edges of the slope along the circumferential direction of the tub 350 are higher than surfaces of other regions of the outer sidewall of the tub 350, thereby improving the spatial freedom of the first connection region 350a along both edges of the circumferential direction of the tub 350, so that the width of an external circuit such as a flexible circuit board is not limited by the space of the connection region, thereby facilitating the flexible circuit board to be attached on the slope of the connection region for soldering with the second ends (e.g., the first conductive pin and the second conductive pin) of each conductive card.
It should be noted that, in the embodiment of the present application, the first sound generating unit 310 and the second sound generating unit 320 may have any structure, that is, may be responsible for sound generation in any frequency band, for example, the first sound generating unit 310 and the second sound generating unit 320 may be both high-frequency sound generating units, for example, the first sound generating unit 310 and the second sound generating unit 320 may be both planar membrane units. Of course, in some examples, the first sound generating unit 310 may be responsible for low-frequency sound generation, and the second sound generating unit 320 may be responsible for high-frequency sound generation, for example, the first sound generating unit 310 may be a moving coil unit, and the second sound generating unit 320 may be a planar membrane unit.
Fig. 18 is a schematic structural view of a further speaker according to an embodiment of the present application, fig. 19 is an exploded view of fig. 18, fig. 20 is a schematic structural view of the third sound emitting unit of fig. 19, fig. 21 is a sectional view of fig. 18, and fig. 22 is a sectional view of fig. 18. Referring to fig. 18 to 22, the plurality of sound generating units according to the embodiment of the present application may further include a third sound generating unit 330, wherein the operating frequency band of the second sound generating unit 320 is smaller than the operating frequency band of the first sound generating unit 310 and is smaller than the operating frequency band of the third sound generating unit 330, and the third sound generating unit 330 and the first sound generating unit 310 are located on the same side of the second sound generating unit 320.
For example, the third sound emitting unit 330 may be a micro-electromechanical system (Micro Electro Mechanical System, MEMS for short) (hereinafter may be referred to as a micro-electromechanical sound emitting unit), and in some embodiments is responsible for high-frequency sound emission, for example, the third sound emitting unit 330 may be responsible for sound emission in a frequency band above 14 kHz. The first sound generating unit 310 may be a planar membrane unit, which may be responsible for the medium frequency part (frequency band between 11kHz-14 kHz), and the second sound generating unit 320 may be a moving coil unit, which may be responsible for the low frequency part (frequency band between 20Hz-11 kHz).
It will be appreciated that, referring to fig. 21 and 22, in order to improve the intermediate frequency sound quality of the first sound generating unit 310, in some examples, a cavity 343 (or a cavity) may be formed on a side of the common magnetic circuit 340 facing the first diaphragm 313, for example, a cavity 343 may be formed on a side of the first magnetic member 311 facing the first diaphragm 313, and an opening of the cavity 343 faces the first diaphragm 313, such that a first cavity 301 is formed between the first diaphragm 313, a surface of the common magnetic circuit 340, and an inner wall of the cavity 343, that is, a rear cavity of the first sound generating unit 310 is formed between a side of the first diaphragm 313 facing the common magnetic circuit 340, a surface of the common magnetic circuit 340, and an inner wall of the cavity 343.
It is understood that the surface of the common magnetic circuit 340 refers to the surface of the common magnetic circuit 340 facing the first diaphragm 313.
By arranging the concave cavity 343 on the shared magnetic circuit system 340, the space size of the rear cavity of the first sound generating unit 310 is increased, the rigidity of the rear cavity of the first sound generating unit 310 is reduced, the resonance point of the first sound generating unit 310 moves forward to the intermediate frequency range, the intermediate frequency sensitivity of the first sound generating unit 310 is improved, namely, the first sound generating unit 310 is more suitable for intermediate frequency output, the intermediate frequency performance of the loudspeaker 300 is enhanced, the loudspeaker 300 meets the actual requirement, and the first sound generating unit 310 has a simple structure and is convenient to manufacture.
Referring to fig. 22, a sealing arrangement may be provided between the cavity 343 and the second cavity 302 (e.g. the front cavity of the second sound generating unit 320) to ensure that the first cavity 301 (e.g. the rear cavity of the first sound generating unit 310) is sealed from the front cavity of the second sound generating unit 320, so as to improve the crosstalk problem between the first sound generating unit 310 and the second sound generating unit 320, and improve the low-frequency and medium-frequency quality of the speaker 300, such as the dryness of sound.
In some examples, the cavity 343 may penetrate to a side surface of the second magnetic member 321 facing the washer 341, in other words, the cavity 343 penetrates from an upper surface of the first magnetic member 311 to a lower surface of the second magnetic member 321 to form a blind hole in the common magnetic circuit 340, so that the washer 341 may seal the cavity 343 and the second cavity 302. It will be appreciated that the upper surface of the first magnetic member 311 faces the first diaphragm 313, and the lower surface of the second magnetic member 321 faces the second diaphragm 323.
Referring to fig. 22, in another example, through holes are formed in each of the first magnetic member 311, the magnetic conductive member 342, the second magnetic member 321, and the washer 341, and the through holes are coaxially disposed along the z direction. Referring to fig. 20, for example, the first center magnet 3111, the magnetic conductive member 342, the second center magnet 3211 and the center washer 3411 may have a ring structure, so that the cavities of the first center magnet 3111, the magnetic conductive member 342, the second center magnet 3211 and the center washer 3411 may form a cavity 343 together.
The rear cavity of the first sound generating unit 310 is formed between the first diaphragm 313, the surface of the common magnetic circuit system 340 and the inner wall of the through hole, in other words, the cavity between the side of the first diaphragm 313 facing the common magnetic circuit system 340 and the surface of the common magnetic circuit system 340 and the inner cavity of the through hole are the rear cavity of the first sound generating unit 310, which improves the space size of the rear cavity of the first sound generating unit 310, so that the intermediate frequency sensitivity of the first sound generating unit 310 is improved.
In addition, by providing the cavity 343 as a through hole penetrating the common magnetic circuit 340, the manufacturing process of the cavity 343 is simplified, the manufacturing efficiency of the speaker 300 is improved,
referring to fig. 22, a second damping mesh 344 may be disposed at an end cap of the cavity 343 (e.g., a through hole) facing the second cavity 302 to seal the cavity 343 and the second cavity 302, so as to improve the sealing and isolation effect between the first cavity 301 and the second cavity 302, i.e., the rear cavity of the first sound generating unit 310 and the front cavity of the second sound generating unit 320, thereby ensuring the acoustic performance of the second sound generating unit 320 and the first sound generating unit 310.
The MEMS sounding unit is prepared through an MEMS process, and the piezoelectric material inside is utilized to warp and deform under the action of an electric field so as to drive the vibrating diaphragm of the MEMS sounding unit to vibrate, so that the piezoelectric material and the vibrating diaphragm push air in the MEMS sounding unit to vibrate, and sound is generated.
The MEMS sound generating unit is generally manufactured by using a MEMS technology, which shows excellent potential and effect in the miniaturization process of the device, and can effectively reduce the volume of the MEMS sound generating unit, so that the volume of the speaker 300 can be reduced on the basis of improving the high-frequency performance of the speaker 300, and the MEMS sound generating unit can have remarkable advantages in micro speaker scenes, such as portable products including headphones, intelligent glasses, wrist watches and the like.
The third sound generating unit 330, that is, the MEMS sound generating unit, widens the working frequency band of the speaker 300, improves the audio effect of the speaker 300, and makes the speaker 300 of the embodiment of the present application more widely used, for example, the microelectromechanical generating unit is responsible for a high frequency part (for example, a frequency band of 14kHz or more), the first sound generating unit 310 is responsible for a medium frequency part (for a frequency band between 11kHz and 14 kHz), and the second sound generating unit 320 is responsible for a low frequency part (for a frequency band between 20Hz and 11 kHz).
Referring to fig. 22, in some examples, the first sound generating unit 310 and the third sound generating unit 330 are located at the same side of the second sound generating unit 320, that is, two sound generating units with higher frequencies are located at the same side of the second sound generating unit 320 with lower frequencies, so that when assembled, the sound outlets of the first sound generating unit 310 and the third sound generating unit 330 may be oriented the same, and simultaneously disposed close to the sound outlet of an electronic device, such as an earphone, to improve the sensitivity of the two sound generating units with higher frequencies.
Referring to fig. 21 and 22, the sound outlet (e.g., the third sound outlet 331) of the third sound generating unit 330 is oriented the same as, e.g., faces upward from, the first diaphragm 313 of the first sound generating unit 310, and the first diaphragm 313 faces the first sound outlet of the first sound generating unit 310, where it is known from the above related content that the first sound outlet may be the sound outlet 100a (see fig. 3), or the first sound outlet faces the sound outlet 100a, and the third sound outlet 331 faces the sound outlet 100a, so that the propagation path of sound from the third sound outlet 331 to the sound outlet 100a can be reduced, i.e., the sound outlet path length of high-frequency sound is reduced, and the loss of sound emitted by the third sound generating unit 330300 transmitted to the sound outlet 100a is reduced, thereby improving the quality of the high-frequency sound of the speaker 300.
Referring to fig. 21 and 22, in some examples, the third sound emitting unit 330 may be located within the first sound emitting unit 310.
Referring to fig. 21 and 22, the third sound emitting unit 330 may be exemplarily located in the rear cavity of the first sound emitting unit 310. In a specific assembly, an end of the third sound generating unit 330, for example, an end having the third sound outlet 331, may be connected to the inner surface of the first diaphragm 313. For convenience of description, an end of the third sound generating unit 330 having the third sound outlet 331 is taken as a top end of the third sound generating unit 330, and an end of the third sound generating unit 330 facing away from the third sound outlet 331 is taken as a bottom end of the third sound generating unit 330.
Referring to fig. 21, for example, the top end of the third sound generating unit 330 may be connected to the inner surface of the first diaphragm 313 through a steel ring 380. The inner surface of the first diaphragm 313 refers to the surface of the first diaphragm 313 facing the first magnetic element 311. It is understood that when the first circuit board 315 is disposed on the inner surface of the first diaphragm 313, the top end of the third sound generating unit 330 may be connected to the surface of the first circuit board 315 facing away from the first diaphragm 313 (see fig. 22).
Referring to fig. 21 and 22, the first diaphragm 313 may have an avoidance hole (e.g., the second avoidance hole 313 a), and the third sound outlet 331 of the third sound generating unit 330 may be in communication with the second avoidance hole 313a, e.g., the third sound outlet 331 may be disposed opposite to the second avoidance hole 313a, so that the sound of the third sound generating unit 330 may be emitted to the outside of the speaker 300 through the third sound outlet 331 and the second avoidance hole 313 a.
Referring to fig. 21 and 22, in some examples, the first magnetic member 311 may have an avoidance hole (e.g., the first avoidance hole 311 a), and at least a portion of the third sound generating unit 330 is located in the first avoidance hole 311a, that is, the third sound generating unit 330 is disposed in a structural member of the first sound generating unit 310, such as the first magnetic member 311, so as to reduce a space occupied by the third sound generating unit 330 in other areas of the speaker 300, thereby reducing a height of the speaker 300.
It is understood that the first relief hole 311a may be a portion of the cavity 343. For example, the cavity 343 penetrates through the entire common magnetic circuit 340 to form a through hole in the common magnetic circuit 340, wherein the portion of the cavity 343 located in the first magnetic member 311, i.e., the through hole on the first magnetic member 311, may serve as the first escape hole 311a for accommodating the third sound generating unit 330. In addition, the through hole on the magnetic conductive member 342 may also be used as the first avoidance hole 311a for avoiding the third sound generating unit 330.
To facilitate the installation of the mems speaker 300, the radial dimensions of the first avoidance holes 311a on the first magnetic member 311 and the magnetic conductive member 342 may be larger than the radial dimensions of the through holes in the second magnetic member 321 and the washer 341.
In some examples, the radial dimension of the third sound generating unit 330 gradually decreases from top to bottom, and when the top of the micro-electromechanical speaker 300 faces the first diaphragm 313 and the bottom faces the magnetic conductive member 342, the radial dimension of the first avoidance hole 311a on the magnetic conductive member 342 may be smaller than the radial dimension of the first avoidance hole 311a on the first magnetic member 311, so as to avoid the bottom of the third sound generating unit 330 with the smaller dimension.
Referring to fig. 19 and 22, in order to facilitate the assembly of the third sound generating unit 330 in the first magnetic member 311, in some examples, the first center magnet 3111 may be configured to include two arc magnets, two ends of the two arc magnets may be disposed opposite to each other and spaced apart, and the two arc magnets may enclose a first avoidance hole 311a therebetween, so that the first center magnet 3111 may avoid the third sound generating unit 330. It can be appreciated that, because the two arc magnets are two independent parts, the two parts are not connected with each other, and the setting position is flexible, so that the size of the first avoiding hole 311a is flexible, and the third sounding unit 330 is more convenient to be inserted between the two arc magnets.
During assembly, two arc magnets can be arranged in the first side magnet 3112 at intervals and opposite to each other, and the two arc magnets are arranged around the first avoiding hole 311a on the magnetic conducting member 342, so that the first avoiding hole 311a is formed in the two arc magnets, and then the first vibrating diaphragm 313 with the third sounding unit 330 arranged on the inner surface is covered on the first side magnet 3112, so that the assembly of the third sounding unit 330 can be completed.
A gap may be formed between the bottom of the microelectromechanical speaker 300 and one side of the second magnetic member 321 facing the first diaphragm 313, so as to ensure that the first avoidance hole 311a on the first magnetic member 311 and the magnetic conductive member 342 are communicated with the cavity 343 (e.g. a through hole) on the second magnetic member 321, thereby ensuring that the space size of the rear cavity of the first sound generating unit 310 is not affected, for example, all cavities between the first diaphragm 313 and the inner wall of the cavity 343 of the common magnetic circuit system may be used as the rear cavity of the first sound generating unit 310, and ensuring the medium frequency sensitivity of the first sound generating unit 310.
Fig. 23 is a schematic view of a portion of the structure of fig. 18, fig. 24 is a schematic view of the structure of the circuit board of fig. 23, and fig. 25 is a schematic view of the structure of the third conductive structure of fig. 23. Referring to fig. 23 to 25, the multi-group conductive structure further includes a third conductive structure 393, and the third conductive structure 393 may include two third conductive inserts 393a (393 b), that is, a third conductive insert 393a and a third conductive insert 393b, respectively. First ends (refer to k9 and k11 in fig. 23 and 25) of the two third conductive inserts 3503a (3503 b) are electrically connected to the positive and negative poles of the third sound emitting unit 330, and second ends (refer to k10 and k12 in fig. 23 and 25) of the two third conductive inserts 3503a (3503 b) are exposed to the outer surface of the sidewall a of the tub 350 and are electrically connected to an external circuit (e.g., a flexible circuit board to which an audio encoder is connected), so that the third sound emitting unit 330 is electrically connected to the external circuit such as the audio encoder through the two third conductive inserts 3503a (3503 b).
For example, the first end k9 of the third conductive insert 393a is electrically connected to the positive electrode of the third sound generating unit 330, and the second end k10 of the third conductive insert 393a is exposed to the outer surface of the sidewall a of the tub 350 and is electrically connected to an external circuit, so that the positive electrode of the third sound generating unit 330 is led out to the outer surface of the sidewall of the tub 350 through the third conductive insert 393a and is electrically connected to the external circuit.
Accordingly, the first end k11 of the third conductive insert 393b is electrically connected with the negative electrode of the third sound generating unit 330, the second end k2 of the third conductive insert 393b is exposed to the outer surface of the side wall a of the basin frame 350 and is electrically connected with an external circuit, so that the negative electrode of the third sound generating unit 330 is led out to the outer surface of the side wall of the basin frame 350 through the third conductive insert 393b and is electrically connected with the external circuit, and the audio decoder in an electronic device such as an earphone transmits voltage signals to the piezoelectric material of the third sound generating unit 330 through the two third conductive inserts 393a (393 b) of the third conductive structure 393, so that the piezoelectric material of the third sound generating unit 330 is warped and deformed under the action of an electric field, and the vibrating diaphragm connected with the piezoelectric material is driven to vibrate, so that the third sound generating unit 330 generates sound.
Referring to fig. 23, in some examples, the first end of each of the third conductive inserts is exposed to the outer surface of the sidewall of the tub 350, so that the electrical connection between the third sound emitting unit 330 and the first end of the third conductive insert is more convenient and reliable. For example, the first end k9 of the third conductive insert 393a is exposed to the outer surface of the sidewall a of the tub 350 to facilitate the welding of the positive electrode of the third sound unit 330, and the first end k11 of the third conductive insert 393b is exposed to the outer surface of the sidewall a of the tub 350 to facilitate the welding of the negative electrode of the third sound unit 330.
Referring to fig. 23 and 25, in one embodiment, first ends of the two third conductive inserts 393a (393 b) may have second conductive terminals, respectively, and second ends of the two third conductive inserts 393a (393 b) may have third conductive pins, respectively, for electrically connecting with the third sound unit 330, and for electrically connecting with an external circuit, such that the third sound unit 330 is electrically connected with the external circuit through the two third conductive inserts.
It can be appreciated that the two second conductive terminals and the two third conductive pins are exposed on the outer surface of the sidewall of the tub 350. The second conductive terminal 3931a is electrically connected to the positive electrode of the third sound generating unit, the third conductive pin 3932a is electrically connected to an external circuit, such that the positive electrode of the third sound generating unit is led out to the outside of the basin frame 350 through the second conductive terminal 3931a and the third conductive pin 3932a and is electrically connected to an external circuit, such as an audio encoder, the second conductive terminal 3931b is electrically connected to the negative electrode of the third sound generating unit, the third conductive pin 3932b is electrically connected to the external circuit, such that the negative electrode of the third sound generating unit 330 is led out to the outside of the basin frame 350 through the second conductive terminal 3931b and the third conductive pin 3932b and is electrically connected to an external circuit, such as an audio encoder, such that the third sound generating unit 330 is electrically connected to an external circuit, such as an audio encoder, through the two third conductive pins 393a (393 b).
The third sound unit 330 is electrically connected to the first ends of the third conductive inserts by providing a second conductive terminal at the first end of each third conductive insert.
Referring to fig. 23 and 24, in some examples, the third sound emitting unit 330 may be electrically connected to an external circuit through the first circuit board 315 in the first sound emitting unit 310, for example, the third sound emitting unit 330 may be electrically connected to the second conductive terminal in each of the third conductive plugs through the first circuit board 315 so that the third sound emitting unit 330 is electrically connected to the third conductive plugs.
For example, the third sounding unit 300 is electrically connected to the first body portion 3151 of the first circuit board 315, the outer edge of the first body portion 3151 may be provided with a second extension portion, the second extension portion and the first extension portion are disposed along the outer edge of the first body portion 3151 at intervals, the second extension portion extends to the outer surface of the sidewall a of the basin frame 350 and is electrically connected to the two second conductive terminals, so that the third sounding unit 330 may be electrically connected to the two first conductive terminals 3911 through the first circuit board 315, and thus, when the two third conductive pins of the two third conductive plugs are electrically connected to the external circuit, the third sounding unit 330 may be electrically connected to the external circuit.
Referring to fig. 23 and 24, two second extension parts may be provided, and each of the two second extension parts extends to the outer surface of the sidewall of the tub 350, for example, the two second extension parts may be attached to the outer surface of the sidewall of the tub 350. One ends of the two second extension parts are electrically connected with the positive electrode and the negative electrode of the third sound generating unit 330 through the first body part 3151, respectively, and the other ends of the two second extension parts are electrically connected with the two second conductive terminals, respectively.
For convenience of description, the two second extensions are the second extension 3153a and the second extension 3153b, respectively. For example, the second extending portion 3153a is electrically connected to the second conductive terminal 3931a, the second extending portion 3153b is electrically connected to the second conductive terminal 3931b, so that the positive electrode pin and the negative electrode pin of the third sound generating unit 330 are electrically connected to the second conductive terminal 3931a and the second conductive terminal 3931b through the first circuit board 315, that is, the positive electrode pin and the negative electrode pin of the third sound generating unit 330 are led out to the two second conductive terminals through the first circuit board 315, so that the two pins of the third sound generating unit 330 are electrically connected to an external circuit, the arrangement structure of the first circuit board 315 is simplified due to the arrangement of the two second extending portions, and the manufacturing efficiency of the speaker 300 is improved.
In addition, the third sound generating unit 330 and the first sound generating unit 310 share the first circuit board 315, which reduces the number of components in the speaker 300, on the one hand, reduces the size of the speaker 300, on the other hand, simplifies the assembly process of the speaker 300, and improves the assembly efficiency of the speaker 300. In addition, the two second extending portions in the first circuit board 315 enable connection between the first circuit board 315 and the first end of the third conductive plug-in to be more convenient and reliable, and the second extending portions can be attached to the outer surface of the side wall of the basin frame 350, so that the size of the first circuit board 315 occupying the inside of the loudspeaker 300 is saved, and miniaturization of the loudspeaker 300 can be ensured.
Fig. 26 is a partial cross-sectional view of fig. 24, and fig. 27 is a partial cross-sectional view of fig. 24. Referring to fig. 26 and 27, a1 and a2 are two wiring layers in the first circuit board 315 for electrically connecting the first voice coil 312 and the first extension portion 3152, respectively, for example, referring to fig. 26, a1 is a first wiring layer, and a2 is a second wiring layer. Referring to fig. 27, a3 and a4 are two wiring layers in the first circuit board 315 for electrically connecting the third sound generating unit 330 and the second extension portion, for example, a3 is a third wiring layer for electrically connecting the positive electrode pin of the third sound generating unit 330 and the second extension portion 3153a, and a4 is a fourth wiring layer for electrically connecting the negative electrode pin of the third sound generating unit 330 and the second extension portion 3153 b.
In the first routing layer a1 and the second routing layer a2, copper sheets exposed on the two third extending portions, for example, first bonding pads are shown as n1 and n2 in fig. 26, and ring copper sheets exposed on the two first extending portions, for example, second bonding pads are shown as m1 and m2 in fig. 26.
Referring to fig. 22 and 23, the third sound generating unit 330 is located on one side of the inner ring 315e of the first body 3151, for example, the top of the third sound generating unit 330 may be connected to the inner surface of the inner ring 315e by bonding or the like, and the third avoiding hole 315a on the inner ring 315e may be communicated with the third sound outlet 331, for example, the third sound outlet 331, the third avoiding hole 315a, and the second avoiding hole 313a on the first diaphragm 313 are coaxially disposed along the z direction, so that the sound generated by the third sound outlet 331 may be transmitted to the outside of the speaker 300, for example, the front earphone cavity 101 through the third avoiding hole 315a and the second avoiding hole 313 a.
Referring to fig. 23 and 24, in some examples, an annular hole (e.g., a second annular hole 315 j) may be formed in the inner ring 315e, the second annular hole 315j dividing the inner ring 315e into a first portion 315g and a second portion 315h, and the third sound emitting unit 330 may be specifically connected to an inner surface of the first portion 315 g.
It will be appreciated that the first portion 315g and the second portion 315h are both annular in configuration, the first portion 315g is located inside the second portion 315h, and the first connection 3155 is located between the second portion 315h and the outer ring 315 f. Illustratively, the third sound generating unit 330 may be located at one side of the first portion 315g, the third escape hole 315a is located on the first portion 315g, and the first voice coil 312 is located at one side of the second portion 315 h. Wherein the third extension portion and the first pads (n 1 and n 2) exposed on the third extension portion are located at an inner edge of the second portion 315h (see fig. 26).
Referring to fig. 26, for example, a first end of the first routing layer a1 is exposed on an inner surface of one of the third extending portions 3154a at an inner edge of the second portion 315h, and forms a first pad n1, the positive electrode lead of the first voice coil 312 is soldered on the first pad n1, so that the positive electrode lead of the first voice coil 312 is electrically connected with the first routing layer a1, the first routing layer a1 may extend to the first extending portion 3152a through the second portion 315h, one of the first connecting portions 3155 and the outer ring 315f, and a second pad m1 is formed on the first extending portion 3152a, and the second pad m1 is soldered on the first conductive terminal 3911a of the first conductive structure 391, so that the positive electrode lead of the first voice coil 312 is electrically connected with the first conductive terminal 3911 a.
The first end of the second routing layer a2 is exposed on the inner surface of the third extension portion 3154b at the inner edge of the second portion 315h, and forms a first bonding pad n2, the negative electrode pin of the first voice coil 312 is welded on the first bonding pad n2, so that the negative electrode pin of the first voice coil 312 is electrically connected with the second routing layer a2, the second routing layer a2 can extend to the first extension portion 3152b through the second portion 315h, the other first connecting portion 3155 and the outer ring 315f, and a second bonding pad m2 is exposed on the first extension portion 3152b, and the second bonding pad m2 is welded on the first conductive terminal 3911b of the first conductive structure 391, so that the negative electrode pin of the first voice coil 312 is electrically connected with the first conductive terminal 3911 b.
The arrangement of the second annular hole j in the embodiment of the present application increases the vibration amplitude of the second portion 315h, so that the first voice coil 312 can drive the first diaphragm 313 to vibrate freely along the z direction (as shown in fig. 22) through the second portion 315h during the movement process, that is, increases the vibration amplitude of the first diaphragm 313.
Referring to fig. 23 and 24, a plurality of connection parts (for example, second connection parts 3156) may be disposed in the second annular hole 315j, the plurality of second connection parts 3156 may be disposed at intervals along the circumference of the second annular hole 315j, one end of each second connection part 3156 is connected to the outer edge of the first portion 315g, and the other end of each second connection part 3156 is connected to the inner edge of the second portion 315h, so as to ensure that the first circuit board 315 is a complete structural member, thereby facilitating assembly of the first circuit board 315.
The first portion 315g is electrically connected to the third sound generating unit 330, and the outer edge of the first portion 315g may be electrically connected to the second extension portion through the second connecting portion 3156, the second portion 315h, and the first connecting portion 3155, so that the third sound generating unit 330 is electrically connected to the second extension portion. For example, the first portion 315g is electrically connected to the positive electrode of the third sound generating unit 330, and a part of the outer edge of the first portion 315g may be electrically connected to the second extension portion 3153a through one of the second connection portions 3156, the second portion 315h, one of the first connection portions 3155, and the outer ring 315f, so that the positive electrode of the third sound generating unit 330 is electrically connected to the second extension portion 3153 a.
The first portion 315g is further electrically connected to the negative electrode of the third sound generating unit 330, and a part of the outer edge of the first portion 315g may be electrically connected to the second extension portion 3153b through the other second connecting portion 3156, the second portion 315h, the other first connecting portion 3155, and the outer ring 315f, so that the negative electrode of the third sound generating unit 330 is electrically connected to the second extension portion 3153 b.
Referring to fig. 27, for example, a first end of one of the third routing layers b1 in the first circuit board 315 is exposed on a surface of the first portion 315g facing the third sounding unit 330 to form a third pad (referred to p1 in fig. 27) on the surface of the first portion 315g, and an anode pin of the third sounding unit 330 is soldered on the third pad p1, so that the anode pin of the third sounding unit 330 is electrically connected to the third routing layer b1, the third routing layer b1 extends to the second extension 3153a through the first portion 315g, one of the second connection portions 3156, the second portion 315h, one of the first portion 315g and the outer ring 315f, and a second end of the third routing layer b1 is exposed on the second extension 3153a to form a fourth pad q1 on the second extension 3153a and is soldered on the second conductive terminal 3931a, so that the anode pin of the third sounding unit 330 is electrically connected to the second conductive terminal 3931 a.
The first end of the fourth wiring layer b2 is exposed on the surface of the first portion 315g facing the third sounding unit 330, so as to form a third bonding pad (refer to p2 in fig. 27) on the surface of the first portion 315g, and the negative electrode pin of the third sounding unit 330 is welded on the third bonding pad p2, so that the negative electrode pin of the third sounding unit 330 is electrically connected with the fourth wiring layer b2, the fourth wiring layer b21 extends onto the second extension portion 3153b through the first portion 315g, the other second connecting portion 3156, the second portion 315h, the other first portion 315g and the outer ring 315f, and the second end of the fourth wiring layer b2 is exposed on the second extension portion 3153b, so as to form a fourth bonding pad q2 on the second extension portion 3153b and is welded on the second conductive terminal 3931b, so that the negative electrode pin of the third sounding unit 330 is electrically connected with the second conductive terminal 3931 b.
With continued reference to fig. 26 and 27, each second connecting portion 3156 has an "S" structure, that is, at least a portion of two ends of each second connecting portion 3156 is different from an extending direction of the middle portion, so as to optimize resonance of the routing layers, for example, the third routing layer b1 and the fourth routing layer b 2.
Pins of the third sounding unit 330 are led out to the outer side wall of the basin frame 350 through the first circuit board 315 in the first sounding unit 310 and are electrically connected with the second conductive terminals on the outer side wall of the basin frame 350, so that the pins of the third sounding unit 330 are led out to the outside of the basin frame 350, the third sounding unit 330 is electrically connected with an external circuit, and an electrical connection structure between the third sounding unit 330 and the external circuit is simplified.
In addition, by arranging the third conductive structure 393 in the side wall of the basin frame 350, the third sounding unit 330 is modularized, for example, when the third sounding unit 330 is assembled, the third sounding unit 330 is electrically connected with the circuit board only after the third sounding unit 330 is assembled in the basin frame 350, and the first circuit board 315 is electrically connected with two second conductive terminals in the third conductive structure 393, so that the assembly of the third sounding unit 330 is completed, and then, only an external circuit is electrically connected with two third conductive pins, so that the third sounding unit 330 can be electrified, the assembly line procedure of the third sounding unit 330 is simplified, and the assembly efficiency of the loudspeaker 300 is improved.
As shown in fig. 23 and 24, illustratively, a second mounting hole 315d may be formed on each second extension, a corresponding second conductive terminal may be provided through the second mounting hole 315d (shown in fig. 24), and the second conductive terminal is electrically connected with an inner wall of the second mounting hole 315 d. For example, the second extension portion 3153a is formed with a second mounting hole 315d, the second conductive terminal 3931a may be disposed in the second mounting hole 315d in a penetrating manner, and the second conductive terminal 3931a is electrically connected to an inner wall of the second mounting hole 315d, and correspondingly, the second extension portion 3153b is formed with a second mounting hole 315d, the second conductive terminal 3931b may be disposed in the second mounting hole 315d in a penetrating manner, and the second conductive terminal 3931b is electrically connected to an inner wall of the second mounting hole 315 d.
The copper sheet (e.g., the fourth pad) exposed at the second end of the trace layer on the second extension portion, e.g., the second extension portion 3153a, may be located at a periphery of the inner edge of the second mounting hole 315d, i.e., the fourth pad may be an annular copper sheet, which is circumferentially disposed on the inner edge of the second mounting hole 315d, and the outer wall of the second conductive terminal, e.g., the second conductive terminal 3931a, may be welded on the annular copper sheet, so as to electrically connect the trace layer on the second extension portion with the second conductive terminal.
Referring to fig. 27, for example, a second end of the third routing layer b1 is exposed on the second extension 3153a to form a fourth pad q1 in a ring shape, the second conductive terminal 3931a is welded on the fourth pad q1 such that the third routing layer b1 is electrically connected with the second conductive terminal 3931a, a second end of the fourth routing layer b2 is exposed on the second extension 3153b to form a fourth pad q2 in a ring shape, and the second conductive terminal 3931b is welded on the fourth pad q2 such that the fourth routing layer b2 is electrically connected with the second conductive terminal 3931 b.
By providing the second mounting hole 315d on the second extension portion and inserting the second conductive terminal into the second mounting hole 315d, so as to facilitate the electrical connection between the second extension portion and the second conductive terminal, for example, when the second extension portion 3153a is welded to the second conductive terminal 3931a, soldering can be performed along the annular gap between the inner wall of the second mounting hole 315d and the side wall of the second conductive terminal 3931a, so that the welding between the second extension portion 3153a and the second conductive terminal 3931a is simpler and faster, and the reliability of the electrical connection between the second extension portion 3153a and the second conductive terminal 3931a is improved.
Referring to fig. 25, each of the third conductive inserts in the third conductive structures 393 may also include a second body portion. One end of the second main body part is electrically connected with the corresponding second conductive terminal, and the other end of the second main body part is electrically connected with the corresponding third conductive pin.
Referring to fig. 23, for example, in the third conductive insert 393a of the third conductive structure 393, one end of the second conductive terminal 3931a is electrically connected to the second extension portion 3153a, the other end of the second conductive terminal 3931a is electrically connected to the third conductive pin 3932a through the second body portion 3933a (refer to fig. 25), one end of the third conductive pin 3932a is exposed to the outer surface of the sidewall of the basin 350 and is electrically connected to the external circuit, that is, the second conductive terminal 3931a is electrically connected to the external circuit through the second body portion 3933a and the third conductive pin 3932a, such that the second extension portion 3153a is electrically connected to the external circuit, and such that the electrode of the third sound generating unit 330, for example, the positive electrode is electrically connected to the external circuit through the second extension portion 3153a and the third conductive insert 3932 a.
Accordingly, as shown in fig. 23, in the third conductive insert 393b of the third conductive structure 393, one end of the second conductive terminal 3931b is electrically connected to the second extension portion 3153b, the other end of the second conductive terminal 3931b is electrically connected to the third conductive pin 3932b through the second body portion 3933b (see fig. 25), and one end of the third conductive pin 3932b is exposed to the outer surface of the sidewall of the basin 350 and is electrically connected to the external circuit, that is, the second conductive terminal 3931b is electrically connected to the external circuit through the second body portion 3933b and the third conductive pin 3932b, such that the second extension portion 3153b is electrically connected to the external circuit, and such that the electrode of the third sound generating unit 330, for example, the negative electrode is electrically connected to the external circuit through the second extension portion 3153b and the third conductive insert 3932 b.
Referring to fig. 23, the outer surface of the side wall a of the basin frame 350 has a second connection area 350b, the second connection area 350b is located between two second conductive terminals, and two third conductive pins are located in the second connection area 350b of the basin frame 350, for example, the second connection area 350b is located between the second conductive terminal 3931a and the second conductive terminal 3931b, and the third conductive pins 3932a and 3932b are located on the second connection area 350b, that is, the two second conductive terminals 3931a (3933 b) and 3932a (3932 b) are led to the second connection area 350b of the side wall of the basin frame 350, in other words, two electrode layers of the third sound generating unit 330 are led to the third conductive pins with a smaller distance from the two second conductive terminals with a larger distance, so that only one circuit board, such as a flexible circuit board, is needed to be directly connected to the two third conductive pins in the second connection area 350b, to the outside, so that the application can be applied to the third sound generating unit 330, and the whole structure of the loudspeaker is easy to be electrically connected to the third electrode layer of the sound generating unit 330.
In one possible implementation, the second connection region 350b and the first connection region 350a may be located at different regions of the outer sidewall of the tub 350, for example, the first connection region 350a and the second connection region 350b of the tub 350 are spaced apart along the circumference of the tub 350 to avoid the influence of the circuit boards of each other when external circuits such as flexible circuit boards are electrically connected to the first connection region 350a and the second connection region 350b, and also to enable the external two circuit boards to be stably connected to the respective connection regions, thereby ensuring the reliability of the electrical connection between the external circuits and the speaker 300.
Referring to fig. 23, the second connection region 350b and the first connection region 350a may be disposed opposite to each other on an outer surface of the sidewall a of the tub 350, for example.
Of course, the embodiment of the present application does not exclude an example that the first wiring area 350a and the second wiring area 350b are the same wiring area, for example, when the first wiring area 350a and the second wiring area 350b are the same wiring area, one first circuit board 315 may be required to be electrically connected to the first conductive pin, the second conductive pin and the third conductive pin at the same time, so that the electrical connection between the external circuit and the three sound generating units may be realized, thereby simplifying the electrical connection procedure between the speaker 300 and the external circuit, and facilitating the use of the speaker 300.
The second wiring area 350b is consistent with the specific arrangement of the second wiring area 350b, and specific reference may be made to the specific content of the second wiring area 350 b.
Referring to fig. 25, in some examples, the second body portion may have a third bending portion, for example, the second body portion 3933a may have a third bending portion 3934a thereon, the second body portion 3933b may have a third bending portion 3934b thereon, the second body portion 3933a and the second body portion 3933b are embedded in the side wall of the frame 350 along the circumferential direction of the frame 350, and the third bending portion 3934a and the third bending portion 3934b are embedded in the side wall of the frame 350 along the thickness direction of the side wall of the frame 350, that is, the matching angles of the second body portion and the corresponding third bending portion (for example, the second body portion 3933a and the third bending portion 3934 a) and the frame 350 are different, so as to improve the stability of the two third conductive plugs of the third conductive structure 393 in the side wall of the frame 350, thereby ensuring the electrical connection stability of the third conductive structure 393 and the third sounding unit 330 and the external circuit.
When the third conductive inserts are arranged, the included angle beta between the second main body part and the third bending part can be between 0 and 180 degrees. Illustratively, the included angle β between the third bend 3934a and the second body 3933a may be between 0 ° -180 °. For example, the angle between the third bending portion 3934a and the second main portion 3933a may be 45 °, 90 °, 135 ° or other suitable angles, so as to ensure that the extending directions of the third bending portion 3934a and the second main portion 3933a inside the sidewall of the basin frame 350 are different.
Continuing with the third conductive insert 393a as an example, it is understood that the third bending portion 3934a may be located at a side of the second body portion 3933a facing the inner surface of the sidewall of the basin frame 350, that is, the third bending portion 3934a extends from the side of the second body portion 3933a toward the inner sidewall of the basin frame 350. In some examples, the third bending portion 3934a may also be located on a side of the second body portion 3933a facing the outer surface of the lateral wall of the frame 350, i.e. the third bending portion 3934a extends from the side of the second body portion 3933a toward the outer lateral wall of the frame 350.
Fig. 28 is a schematic structural view of a speaker according to an embodiment of the present application, fig. 29 is a schematic structural view of another view of fig. 28, fig. 30 is a schematic structural view of a second circuit board of fig. 29, and fig. 31 is a cross-sectional view of fig. 29. Referring to fig. 28 to 31, in still other examples, the third sound emitting unit 330 may be further located between the first diaphragm 313 and the second cover 370, i.e., the third sound emitting unit 330 may use the front cavity space of the first sound emitting unit 310 such that the third sound emitting unit 330 is assembled within the speaker 300.
In this example, the third sound emitting unit 330 may be coupled to the second cover 370 to improve structural stability of the third sound emitting unit 330. For example, the tip of the third sound emitting unit 330 may be attached to the inner surface of the second cover 370 by means of bonding or the like. The inner surface of the second cover 370 means a surface of the second cover 370 facing the first diaphragm 313.
Referring to fig. 30, when the third sound generating unit 330 is located between the first diaphragm 313 and the second cover 370, the third sound outlet 331 of the third sound generating unit 330 may be in communication with the first sound outlet 314 on the second cover 370, for example, the third sound outlet 331 may face the first sound outlet 314, so that both the sound of the third sound generating unit 330 and the sound of the first sound generating unit 310 are transmitted to the outside of the speaker 300 through the first sound outlet 314.
In a specific arrangement, the projection area of the third sound generating unit 330 on the first sound generating unit 310 is located in the central area of the first sound generating unit 310, for example, when the third sound generating unit 330 is located in the first sound generating unit 310, the third sound generating unit 330 is located in the central area of the first sound generating unit 310, so that the sound outlet of the third sound generating unit 330, for example, the third sound outlet 331 is located in the central area of the first sound generating unit 310, and the sound quality of the high-frequency sound generating unit is improved.
The first sound outlet 314 of the first sound generating unit 310 may be located in a central area of the first sound generating unit 310, and the third sound outlet 331 is opposite to the first sound outlet 314, so that when the central area of the first sound generating unit 310 may be located in a central area of the speaker 300, the sound outlets of the first sound generating unit 310 and the third sound generating unit 330 may be located in the central area of the speaker 300, thereby improving the quality of middle and high frequencies of the speaker 300.
Referring to fig. 28 and 30, when the third sound emitting unit 330 is positioned between the first diaphragm 313 and the second cover 370, a second circuit board 332 may be disposed in the speaker 300, and the third sound emitting unit 330 may be electrically connected to an external circuit through the second circuit board 332. For example, a portion of the second circuit board 332 is located between the first cover 360 and the third sounding unit 330, and the second circuit board 332 is electrically connected to the piezoelectric cantilever of the third sounding unit 330, another portion of the second circuit board 332 extends to the outer side wall of the basin frame 350 to be electrically connected to an external circuit, for example, a portion of the second circuit board 332 extending to the outer side wall of the basin frame 350 may be electrically connected to the second conductive terminal 3931 (see fig. 29), and the second conductive terminal 3931 may be electrically connected to the external circuit through the third conductive pin 3932.
Referring to fig. 29 to 31, for example, the second circuit board 332 may include a second body portion 3321 and two branch portions (e.g., a branch portion 3322a and a branch portion 3322 b) connected to an outer edge of the second body portion 3321, wherein the second body portion 3321 is clamped between an inner surface of the second cover 370 and a top end of the third sound emitting unit 330 (refer to fig. 31), and may be electrically connected to the third sound emitting unit 330, the two branch portions may be electrically connected to two second conductive terminals (refer to fig. 29), for example, the branch portion 3322a is electrically connected to the second conductive terminal 3931a, and the branch portion 3322b is electrically connected to the second conductive terminal 3931b, so that the second circuit board 332 leads positive and negative poles of the third sound emitting unit 330 to the two second conductive terminals 3931a (3931 b), respectively, so as to facilitate the lead pins of the third sound emitting unit 330 to the outside of the basin frame 350, thereby facilitating the electrical connection of the third sound emitting unit 330 to an external circuit, and simplifying the electrical connection structure between the third sound emitting unit 330 and the external circuit.
It can be appreciated that the second body portion 3321 may have a third avoidance hole 315a, where the third avoidance hole 315a is respectively communicated with the third sound outlet 331 and the first sound outlet 314, so that the sound emitted from the third sound outlet 331 propagates to the outside of the speaker 300 through the third avoidance hole 315a and the first sound outlet 314 sequentially, and finally may propagate into the ear canal of the user through the sound outlet 100a of the electronic device such as an earphone.
Referring to fig. 29 and 30, illustratively, a third mounting hole 332a may be formed at each branch portion, a second conductive terminal is penetrated into the third mounting hole 332a, and the second conductive terminal is electrically connected with an inner wall of the third mounting hole 332 a. For example, the second conductive terminal 3931a is disposed through the third mounting hole 332a of the branch portion 3322a and electrically connected to the inner wall of the third mounting hole 332a, and the second conductive terminal 3931b is disposed through the third mounting hole 332a of the branch portion 3322b and electrically connected to the inner wall of the third mounting hole 332 a.
By providing the third mounting hole 332a on the branch portion 3322 and inserting the second conductive terminal 3931 into the third mounting hole 332a, so as to facilitate the electrical connection between the branch portion 3322 and the second conductive terminal 3931, for example, when the branch portion 3322 is welded to the second conductive terminal 3931, soldering can be performed along the annular gap between the inner wall of the third mounting hole 332a and the side wall of the second conductive terminal 3931, so that the welding between the branch portion 3322 and the second conductive terminal 3931 is simpler and faster, and the reliability of the electrical connection between the branch portion 3322 and the second conductive terminal 3931 is improved.
It can be understood that the specific arrangement manner of the second circuit board 332 for leading out the positive and negative electrodes of the third sound generating unit 330 to the second conductive terminal 3931 can be directly referred to the content of the first circuit board 332 for leading out the positive and negative electrodes of the third sound generating unit 330 to the second conductive terminal 3931 in the above example, which is not repeated herein.
The second circuit board 332 may be a flexible circuit board (Flexible Printed Circuit abbreviated as FPC) to improve flexibility of the second circuit board 332, so that a portion of the second circuit board 332 is attached to an outer side wall of the basin frame 350.
It should be noted that, the third sound generating unit in the embodiment of the present application may be a high-frequency sound generating unit, for example, a micro-electromechanical sound generating unit in the above example, or a sound generating unit in other frequency bands, for example, an intermediate-frequency sound generating unit or a low-frequency sound generating unit.
Of course, in some examples, the third sound generating unit may be replaced by a sound pickup device (such as a microphone, etc.), so as to save the occupied space of the sound pickup device in the electronic device, and achieve miniaturization of the electronic device.
In addition, each sound generating unit of the embodiment of the present application may include, but is not limited to, a moving coil unit, a planar membrane unit, or a moving iron unit, and the embodiment of the present application specifically does not limit the structure of the sound generating unit, as long as each sound generating unit needs to be energized.
According to the embodiment of the application, the loudspeaker 300 is arranged in the electronic equipment, so that the assembly process of the electronic equipment is simplified, and the assembly efficiency of the electronic equipment is improved.
It should be noted that, the numerical values and the numerical ranges related to the embodiments of the present application are approximate values, and may have a certain range of errors under the influence of the manufacturing process, and those errors may be considered to be negligible by those skilled in the art.
The present application is not limited to the above embodiments, and any person skilled in the art can easily think about the changes or substitutions within the technical scope of the present application, and the changes or substitutions are intended to be covered by the scope of the present application; embodiments of the application and features of the embodiments may be combined with each other without conflict. Therefore, the protection scope of the application is subject to the protection scope of the claims.
It should be understood that "electrically connected" in the present application may be understood as components in physical contact and in electrical conduction; it is also understood that the various components in the wiring structure are connected by physical wires such as printed circuit board (printed circuit board, PCB) copper foil or leads that carry electrical signals. "connected" or "coupled" may refer to a mechanical or physical connection, i.e., a and B are connected or a and B are connected, and may refer to a fastening member (such as a screw, bolt, rivet, etc.) between a and B, or a and B are in contact with each other and a and B are difficult to separate.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and for example, "connected" may be either detachably connected or non-detachably connected; can be in direct contact connection or indirect connection through an intermediate medium, and can be communication between two elements or interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances. References to directional terms in the embodiments of the present application, such as "upper", "lower", "left", "right", "inner", "outer", etc., are merely with reference to the directions of the drawings, and thus, the directional terms are used in order to better and more clearly describe and understand the embodiments of the present application, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. "plurality" means at least two.
In the embodiment of the present application, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The terms first, second, third, fourth and the like in the description and in the claims and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
Claims (28)
1. A loudspeaker, comprising a frame and a plurality of sound generating units, wherein the frame is provided with a side wall, and at least part of the sound generating units are positioned in an inner cavity surrounded by the side wall of the frame;
The side wall of the basin frame is internally provided with a plurality of groups of conductive structures which are arranged at intervals, each group of conductive structures corresponds to one sounding unit, each group of conductive structures comprises two conductive plug-ins, the first end of each conductive plug-in is electrically connected with the corresponding sounding unit, and the second end of each conductive plug-in is exposed out of the outer surface of the side wall of the basin frame;
in at least one group of the conductive structures, the first end of each conductive insert is exposed out of the outer surface of the side wall of the basin frame.
2. The loudspeaker of claim 1, wherein the plurality of sound emitting units comprises first sound emitting units, the plurality of sets of conductive structures comprises first conductive structures, the first conductive structures comprise two first conductive inserts, a first end of each first conductive insert is exposed at an outer surface of the basin frame side wall and is electrically connected with the first sound emitting units, and a second end of each first conductive insert is exposed at the outer surface of the basin frame side wall.
3. The loudspeaker of claim 2, further comprising: a circuit board;
the first sound generating unit at least comprises a first voice coil, and the first voice coil and the circuit board are stacked along the height direction of the basin frame;
In the first conductive structure, a first end of each first conductive plug is electrically connected with the first voice coil through the circuit board.
4. A loudspeaker according to claim 3, wherein the circuit board comprises a first body portion and two first extending portions arranged on the outer edge of the first body portion, the first voice coil and the first body portion are stacked along the height direction of the frame, the first body portion is electrically connected with the first voice coil, the two first extending portions are located on the outer surface of the side wall of the frame, and the two first extending portions are electrically connected with the first ends of the corresponding first conductive inserts respectively.
5. The loudspeaker of claim 4, wherein in the first conductive structure, a first end of each of the first conductive inserts has a first conductive terminal and a second end of each of the first conductive inserts has a first conductive pin;
each first extension part is provided with a first mounting hole, the first conductive terminal penetrates through the first mounting holes, and the first conductive terminal is electrically connected with the hole walls of the first mounting holes.
6. The loudspeaker of any one of claims 3-5, wherein the first sound generating unit is a planar membrane unit, the first sound generating unit includes a first diaphragm, and the first voice coil, the circuit board, and the first diaphragm are stacked in order along a height direction of the frame.
7. The loudspeaker of claim 6, wherein the first diaphragm and the circuit board are both located outside the frame, and the first body portions of the first diaphragm and the circuit board are located at an end of the frame near the first voice coil.
8. The loudspeaker of any one of claims 2-7, wherein the plurality of sound emitting units further comprises a second sound emitting unit, the second sound emitting unit being located on a side of the first voice coil of the first sound emitting unit facing away from the circuit board;
the second sound generating unit comprises a second voice coil;
the plurality of groups of conductive structures further comprise second conductive structures, each second conductive structure comprises two second conductive plug-ins, the first end of each second conductive plug-in is located in the basin frame and is electrically connected with the second voice coil, and the second end of each second conductive plug-in is provided with a second conductive contact pin.
9. The loudspeaker of claim 8, wherein the frame sidewall has a first wire connection area on an outer surface thereof, the first wire connection area being located between two first conductive terminals of the first conductive structure;
the two first conductive pins of the first conductive structure and the two second conductive pins of the second conductive structure are both located in the first wiring area.
10. The loudspeaker of claim 9, wherein two of the first conductive pins are arranged in a first row and two of the second conductive pins are arranged in a second row, the first row and the second row being spaced apart along a height direction of the frame.
11. The loudspeaker of claim 9 or 10, wherein the surface of the first connection region is a slope, the distance between the slope and the inner surface of the frame sidewall decreasing in a direction from the first end of the frame to the second end of the frame; the first end of the basin frame and the second end of the basin frame are respectively two ends of the basin frame, which are opposite in the height direction, and the first voice coil is positioned at the first end of the basin frame.
12. The loudspeaker of any one of claims 8-11, wherein the second sound generating unit is a moving coil unit, the first sound generating unit includes a first magnetic member, the first magnetic member includes a first side and a second side opposite to each other in a height direction of the frame, and the first voice coil is located at the first side;
the second sound generating unit comprises a second magnetic part, the second magnetic part comprises a third side and a fourth side which are opposite in the height direction of the basin frame, the second magnetic part is positioned on the second side, and the second voice coil is positioned on the fourth side;
At least a portion of the first magnetic member of the second side faces at least a portion of the second magnetic member of the third side, and the at least a portion of the first magnetic member of the second side is magnetically opposite to the at least a portion of the second magnetic member of the third side.
13. The loudspeaker of any one of claims 8-11, wherein the second sound generating unit is a moving coil unit, and the second sound generating unit includes a common magnetic member including a first side and a second side in a height direction of the frame, a first voice coil of the first sound generating unit is located at the first side, the circuit board is located at a side of the first voice coil facing away from the common magnetic member, a second voice coil of the second sound generating unit is located at the second side, and at least a portion of magnetism of the first side and the second side facing away from each other in the height direction of the frame is opposite.
14. The loudspeaker of any one of claims 2-13, wherein each of the first conductive inserts in the first conductive structure further comprises a first body portion and a first bend portion connected to the first body portion;
the two ends of the first main body part are respectively connected with the corresponding first conductive terminals and first conductive pins of the first conductive plug-in, the first main body part penetrates through the inside of the side wall of the basin frame along the circumferential direction of the basin frame, and the first bending part penetrates through the inside of the side wall of the basin frame along the thickness direction of the side wall of the basin frame.
15. The loudspeaker of any of claims 2-14, wherein each second conductive insert of the second conductive structure of the loudspeaker further comprises a second bend, the second bend being connected to the second conductive pin;
the second bending part is embedded in the side wall of the basin frame.
16. The loudspeaker of any of claims 8-15, wherein one of the first sound emitting unit and the second sound emitting unit of the loudspeaker has an operating frequency band that is greater than an operating frequency band of the other.
17. The speaker of any one of claims 8-16, wherein the plurality of sound emitting units further comprises a third sound emitting unit;
the working frequency range of the second sound generating unit of the loudspeaker is smaller than that of the first sound generating unit and smaller than that of the third sound generating unit, and the third sound generating unit and the first sound generating unit are located on the same side of the second sound generating unit.
18. The loudspeaker of claim 17, wherein the plurality of sets of conductive structures further comprises a third conductive structure,
the third conductive structure comprises two third conductive plug-ins, and the first end of each third conductive plug-in is exposed out of the outer surface of the side wall of the basin frame and is electrically connected with the third sounding unit.
19. The loudspeaker of claim 18, wherein the first end of each third conductive insert has a second conductive terminal and the second end of each third conductive insert has a third conductive pin;
each second conductive terminal is electrically connected with the third sounding unit through a circuit board of the loudspeaker.
20. The loudspeaker of claim 19, wherein the circuit board further comprises two second extensions provided at the outer edge of the first body portion, the two second extensions being located at the outer surface of the side wall of the tub;
the first body part is electrically connected with the third sounding unit, and the two second extension parts are respectively and correspondingly electrically connected with the two second conductive terminals.
21. The speaker of claim 20, wherein each of the second extension portions has a second mounting hole therein, wherein one end of the second conductive terminal is disposed through the second mounting hole, and wherein one end of the second conductive terminal is electrically connected to a wall of the second mounting hole.
22. The loudspeaker of any one of claims 19-21, wherein the outer surface of the frame sidewall further comprises a second wire connection region, the second wire connection region being located between two of the second conductive terminals, and two of the third conductive pins being located within the second wire connection region.
23. The loudspeaker of claim 22, wherein the first wire region and the second wire region of the frame are spaced apart along a circumference of the frame.
24. The loudspeaker of any of claims 19-23, wherein each of the third conductive inserts further comprises a second body portion and a third bend portion connected to the second body portion;
the two ends of the second main body part are respectively connected with the second conductive terminal and the third conductive pin of each third conductive plug-in, the second main body part is embedded in the side wall of the basin frame along the circumferential direction of the basin frame, and the third bending part is embedded in the side wall of the basin frame along the thickness direction of the side wall of the basin frame.
25. The loudspeaker of any of claims 17-24, wherein a third one of the sound emitting units is a microelectromechanical sound emitting unit;
the microelectromechanical sound generating unit and the first sound generating unit of the loudspeaker are positioned on the same side of the second sound generating unit.
26. A loudspeaker according to any one of claims 1 to 25, wherein the frame is integrally formed with the conductive structure.
27. An electronic device comprising a housing and at least one loudspeaker according to any one of claims 1-26;
The speaker is located in the interior cavity of the housing.
28. The electronic device of claim 27, wherein the electronic device is a headset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210138398.XA CN116647793A (en) | 2022-02-15 | 2022-02-15 | Speaker and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210138398.XA CN116647793A (en) | 2022-02-15 | 2022-02-15 | Speaker and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116647793A true CN116647793A (en) | 2023-08-25 |
Family
ID=87642318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210138398.XA Pending CN116647793A (en) | 2022-02-15 | 2022-02-15 | Speaker and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116647793A (en) |
-
2022
- 2022-02-15 CN CN202210138398.XA patent/CN116647793A/en active Pending
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