WO2022206047A1 - 电子设备 - Google Patents

电子设备 Download PDF

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Publication number
WO2022206047A1
WO2022206047A1 PCT/CN2021/139469 CN2021139469W WO2022206047A1 WO 2022206047 A1 WO2022206047 A1 WO 2022206047A1 CN 2021139469 W CN2021139469 W CN 2021139469W WO 2022206047 A1 WO2022206047 A1 WO 2022206047A1
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WO
WIPO (PCT)
Prior art keywords
sound
magnetic
vibration
electronic device
central
Prior art date
Application number
PCT/CN2021/139469
Other languages
English (en)
French (fr)
Inventor
蔡晓东
刘松
Original Assignee
歌尔股份有限公司
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Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2022206047A1 publication Critical patent/WO2022206047A1/zh

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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
    • H04R9/02—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
    • H04R9/025—Magnetic circuit
    • H04R9/027—Air gaps using a magnetic fluid
    • 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
    • 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

Definitions

  • the present invention relates to the technical field of acoustic equipment, in particular to an electronic equipment.
  • a sound-emitting device is generally provided inside the electronic device.
  • an electronic device such as a mobile phone, a tablet computer, a laptop computer, etc.
  • a sound-emitting device is generally provided inside the electronic device.
  • an electronic device such as a mobile phone is currently answering a call, there is usually a problem of sound leakage, which is very unfavorable for the protection of personal privacy.
  • the main purpose of the present invention is to propose an electronic device aimed at reducing the risk of sound leakage from the electronic device.
  • the electronic equipment proposed by the present invention includes:
  • a sound-generating device includes a fixed shell, a magnetic circuit system and two vibration systems, the magnetic circuit system is arranged in the fixed shell, and each of the vibration systems includes a vibrating membrane and a voice coil connected to the vibrating membrane, The two vibrating membranes are respectively arranged on two opposite sides of the magnetic circuit system and are connected with the fixed shell, and the voice coils of the two vibrating systems both extend at least partially into the magnetic gap of the magnetic circuit system; and ,
  • the casing is provided with an installation cavity and two sound-out parts, the sound-emitting device divides the installation cavity into two sound-out cavities, and one of the sound-out parts and one of the diaphragms communicate with one of the sound-out cavities , and the other said sound outlet and another said diaphragm communicate with another said sound outlet cavity;
  • the electronic device has an external mode and an earphone mode.
  • the two vibration systems radiate sound waves of the same phase through the corresponding sound output parts.
  • the two The vibration system radiates sound waves of opposite phases outward through the respective corresponding sound outlets.
  • the housing has a front side, a back side and a top side, the front side is provided with a display portion, the back side is opposite to the front side, and the top side is located between the back side and the front side;
  • One of the sound-emitting parts is provided on the front surface or at the connection between the front surface and the top side surface, and the other sound-emitting part is provided on the back surface, the top side surface, or the back surface and the top surface. connection on the top side.
  • the two diaphragms are spaced apart in the arrangement directions of the front and the back.
  • the sound outlet portion includes a plurality of first sound outlet holes, and the plurality of first sound outlet holes are all communicated with the sound outlet cavity.
  • the housing is provided with a first limit step and a second limit step in the installation cavity, and the periphery of the sounding device is clamped by the first limit step and the second limit step. between the limit steps.
  • the sounding device further includes at least one cover plate, the cover plate is covered on the side of one of the diaphragms facing away from the other diaphragm, between the cover plate and the diaphragm A vibration cavity is formed, and the cover plate is provided with a second sound outlet hole that communicates with the vibration cavity and the sound outlet cavity.
  • the cover plate includes a bulge portion raised in a direction away from the vibrating membrane and an annular connecting portion arranged around the periphery of the bulging portion, the annular connecting portion is connected to the fixed shell, and the first Two sound holes are arranged on the raised portion.
  • a sound outlet groove is provided on the side of the raised portion away from the diaphragm, and the sound outlet groove is arranged through two ends to communicate with the sound outlet cavity, and the sound outlet groove is provided with a sound outlet groove. There is the second sound outlet.
  • the magnetic circuit system includes a central magnetic circuit structure and a side magnetic circuit structure
  • the central magnetic circuit structure includes a central magnet and two central magnetic conducting plates respectively disposed on the upper and lower sides of the central magnet, each The central magnetic conductive plate includes a first magnetic conductive portion corresponding to the central magnet, the central magnet is arranged between the two first magnetic conductive portions, and at least one of the central magnetic conductive plates includes a first magnetic conductive portion.
  • a first connecting part extending from the edge of the magnetic conducting part to the outside, the first connecting part is connected with the fixing shell;
  • the side magnetic circuit structure is fixed on the fixed shell, and the side magnetic circuit structure includes a side magnet arranged around the central magnet and two side magnetic conductive plates arranged on the upper and lower sides of the side magnet.
  • the magnets and the first connecting parts are distributed at intervals in the circumferential direction of the central magnet, and a magnetic gap is formed between the central magnet and the central magnetic conducting plate and the side magnets and the side magnetic conducting plates;
  • Each vibration system includes two flat voice coils, the central axes of the two flat voice coils are perpendicular to the vibration directions of the two vibration systems, wherein the two flat voice coils of one of the vibration systems are arranged along a first horizontal square and protrude into the two opposite parts of the magnetic gap, and two flat voice coils of the other vibration system are arranged along a second horizontal direction perpendicular to the first horizontal direction, and protrude into the magnetic gap. in two opposite parts.
  • the voice coils of the two vibration systems are annular voice coils, and the central axes of the two annular voice coils are parallel to the vibration directions of the two vibration systems;
  • the magnetic circuit system forms two magnetic gaps with openings facing the two diaphragms, respectively, and the two annular voice coils respectively extend into the two magnetic gaps.
  • the magnetic circuit system includes a support plate, a first magnetic component provided on a first side of the support plate, and a second magnetic component provided on a second side of the support plate, the first magnetic component
  • the assembly forms a first magnetic gap
  • the second magnetic assembly forms a second magnetic gap
  • the two annular voice coils respectively extend into the first magnetic gap and the second magnetic gap.
  • the technical solution of the present invention is to divide the installation cavity in the housing into two sound-emitting cavities by dividing the sound-emitting device, and a sound-emitting portion is provided on the housing corresponding to each sound-emitting cavity, and the sound-emitting device is provided with two vibration systems, so that the two Each vibration system corresponds to the two sound cavities one-to-one, so that the sound can be emitted through the two sound output parts.
  • the electronic device can be set to the earpiece mode, that is, one of the sound-out parts can be close to the ear, and by controlling the two vibration systems, the sound-out part close to the ear can radiate outward.
  • the sound wave is opposite to the sound wave radiated to the outside world by the other sound outlet.
  • an acoustic dipole effect can be formed, so that the sounds emitted by the two sound output parts cancel each other at the peripheral position of the user of the electronic device, thereby reducing the risk of sound leakage when the user uses the electronic device to talk, and realize the electronic device communication.
  • privacy protection feature since the two vibration systems can work independently, parameters such as signals and voltages of the two vibration systems can be adjusted at will to achieve the best call and privacy protection effects.
  • the electronic equipment can also be set to the external mode, that is, the two vibration systems can be controlled to radiate the same phase sound waves through the two sound-emitting parts, which can make up for the lack of volume caused by the size of the sound-emitting device, and can effectively increase the volume. Therefore, the sound outlet can be used as a loudspeaker to emit sound.
  • FIG. 1 is a schematic structural diagram of an embodiment of an electronic device of the present invention
  • FIG. 2 is a schematic structural diagram of the electronic device in FIG. 1 viewed from another angle;
  • Fig. 3 is the cutaway schematic diagram of electronic equipment in the sounding device in Fig. 1;
  • FIG. 4 is a schematic structural diagram of another embodiment of the electronic device of the present invention.
  • Fig. 5 is the cutaway schematic diagram of electronic equipment in the sounding device in Fig. 4;
  • FIG. 6 is a schematic cross-sectional view of the sound-emitting device in another embodiment of the electronic device of the present invention.
  • Fig. 7 is the enlarged view of A place in Fig. 6;
  • Fig. 8 is the structural representation of the sounding device in Fig. 6;
  • FIG. 9 is an exploded view of a sound-emitting device in yet another embodiment of the electronic device of the present invention.
  • Fig. 10 is an exploded view of the magnetic circuit system in Fig. 9;
  • FIG. 11 is a schematic cross-sectional view of the sounding device in FIG. 9 after being assembled.
  • the present invention provides an electronic device, which can be a mobile phone, a tablet computer, a computer, a smart watch, or the like.
  • the electronic device includes a casing 10 and a sounding device 20 .
  • the sounding device 20 includes a fixed shell 21 , a magnetic circuit system 22 and two vibration systems 23 .
  • the magnetic circuit system 22 is arranged in the fixed shell 21, and each vibration system 23 includes a vibration membrane 233 and a voice coil 231 connected to the vibration membrane 233.
  • the voice coils 231 of the two vibration systems 23 both at least partially extend into the magnetic gap 220 of the magnetic circuit system 22 .
  • the housing 10 is provided with a mounting cavity 11 and two sound-emitting parts 12.
  • the sound-generating device 20 divides the mounting cavity 11 into two sound-emitting cavities 111.
  • One of the sound-emitting parts 12 and one diaphragm 233 is connected to one of the sound-emitting chambers 111, and the other is connected to the sound-emitting cavity 111.
  • One sound outlet 12 and the other diaphragm 233 communicate with the other sound outlet cavity 111 .
  • one of the diaphragms 233 is connected to one of the sound output cavities 111
  • the other diaphragm 233 is connected to the other sound output cavity 111 , which means that the space on the side of the two diaphragms 233 away from each other is connected to the two sound output cavities respectively.
  • 111 are connected in a one-to-one correspondence, so that when the diaphragm 233 vibrates and emits sound, the sound can be transmitted from the sound outlet cavity 111 and the sound outlet portion 12 to the outside of the housing 10 .
  • the two sound-emitting parts 12 are arranged at intervals on the housing 10, the sound-emitting directions of the two sound-emitting parts 12 are at an angle or opposite, and the two sound-emitting parts 12 may be located on different sides of the electronic device or other positions, such as electronic devices.
  • the two sound output parts 12 can be arranged on the peripheral side of the electronic device.
  • the two vibration systems 23 can work independently, and the voice coils 231 of the two vibration systems 23 do not interfere with each other when they vibrate simultaneously.
  • the magnetic circuit system 22 is formed with two magnetic gaps, and the voice coils 231 of the two vibration systems 23 each protrude into a magnetic gap and so on.
  • the electronic device has an external mode and an earphone mode.
  • the two vibration systems 23 radiate sound waves of the same phase through the corresponding sound output parts 12.
  • the two vibration systems 23 pass through their corresponding output.
  • the sound portion 12 radiates sound waves of opposite phases outward. That is, in the external mode, by controlling the two vibrating membranes 233 to vibrate in opposite directions at the same time, the two vibration systems 23 radiate positive phase sound waves outward through their corresponding sound outlets 12 at the same time, which can effectively increase the volume, thereby increasing the volume.
  • the sound generating device 20 can be used as a speaker to emit sound.
  • the two diaphragms 233 In the earpiece mode, by controlling the two diaphragms 233 to vibrate in the same direction at the same time, when one of the vibration systems 23 radiates the normal phase sound wave/reverse phase sound wave through the corresponding sound outlet 12, the other vibration system 23 The opposite-phase sound waves/normal-phase sound waves are radiated outward through the corresponding sound output parts 12 .
  • one of the sound-emitting parts 12 is placed close to the user's ear, and the other sound-emitting part 12 is farther away from the user's ear than the aforesaid sound-emitting part 12 .
  • An acoustic dipole effect is formed.
  • the distance between the two sound outlets 12 can be ignored, the distance between the two sound outlets 12 and the ears of the surrounding people is close, and the sound waves of opposite phases of the two vibration systems 23 arrive The ears of surrounding people cancel each other out to reduce sound leakage.
  • the distance between the two sound outlets 12 and the user's ear is relatively large, which does not satisfy the conditions of the acoustic dipole effect, and the degree of sound wave cancellation is small, so the user can hear the sound with appropriate loudness .
  • the technical solution of the present invention divides the installation cavity 11 in the housing 10 into two sound-emitting cavities 111 by dividing the sound-emitting device 20 into two sound-emitting cavities 111 , and a sound-emitting portion 12 is provided on the housing 10 corresponding to each sound-emitting cavity 111 , and the sound-emitting device is 20.
  • Two vibration systems 23 are provided, so that the two vibration systems 23 correspond to the two sound-exit cavities 111 one-to-one, so that the two sound-exit parts 12 can emit sound.
  • the electronic device when the user uses the electronic device to make a call, the electronic device can be set to the earpiece mode, that is, one of the sound output parts 12 can be brought close to the ear, and by controlling the two vibration systems 23, the sound output part 12 close to the ear can be made to move toward the ear.
  • the sound wave radiated to the outside is opposite to the sound wave radiated to the outside by the other sound outlet 12 . Therefore, an acoustic dipole effect can be formed, so that the sounds emitted by the two sound output parts 12 cancel each other at the peripheral positions of the user of the electronic device, thereby reducing the risk of sound leakage when the user uses the electronic device to talk, and realizes the electronic device. Privacy protection during calls.
  • the two vibration systems 23 can work independently, parameters such as signals and voltages of the two vibration systems 23 can be adjusted at will, so as to achieve the best effect of communication and privacy protection.
  • the electronic equipment can also be set in the external mode, that is, the two vibration systems 23 can be controlled to radiate the same phase sound waves through the two sound-emitting parts 12, which can make up for the lack of volume caused by the size of the sound-emitting device 20, and can effectively increase The volume is large, so that the sound output part 12 can be used as a loudspeaker to emit sound.
  • the electronic device is a mobile phone as an example for description, but it is not limited to this.
  • the housing 10 has a front side 13 , a back side 14 and a top side 15 , the front side 13 is provided with a display portion, the back side 14 is opposite to the front side 13 , and the top side 15 is located between the back side 14 and the front side 13 .
  • one of the sound-emitting parts 12 is arranged at the connection between the front surface 13 and the top side surface 15, and the other sound-emitting part 12 is arranged on the back surface 14 and the connection.
  • one of the sound-emitting parts 12 is provided on the front surface 13 , and the other sound-emitting part 12 is provided at the connection between the back surface 14 and the top side surface 15 .
  • This can also ensure that the sound output part 12 has a good coupling effect with the ear when the user is talking, so that the user can clearly answer the sound from the sound output part 12, improve the user's call answering effect, and can achieve a better acoustic dipole effect. and better speaker output.
  • one of the sound-emitting parts 12 is provided at the connection between the front surface 13 and the top side surface 15 , and the other sound-emitting part 12 is provided on the back surface 14 .
  • the other sound output part 12 is provided on the back surface 14 .
  • the sound outlet 12 provided on the back surface 14 can be kept away from the sound outlet 12 provided at the connection between the front surface 13 and the top side 15 , so as to achieve a better acoustic dipole effect and further reduce the risk of sound leakage.
  • one of the sound-emitting parts 12 is provided on the front surface 13
  • the other sound-emitting part 12 is provided on the back surface 14 . This can also ensure that the sound output part 12 has a good coupling effect with the ear when the user is talking, so that the user can clearly answer the sound from the sound output part 12, improve the user's call answering effect, and can achieve a better acoustic dipole effect. .
  • one of the sound outlets 12 is provided at the connection between the front surface 13 and the top side 15 , and the other sound outlet 12 is provided on the top side 15 .
  • the sound output part 12 has a good coupling effect with the ear when the user is talking, so that the user can clearly answer the sound from the sound output part 12, improve the user's call answering effect, and reduce the sound output part 12 on the front. 13 footprint.
  • the two sound output parts 12 are used as speakers to emit sound, the cooperation effect of the two sound output parts 12 can be improved, thereby increasing the volume of the output sound.
  • one of the sound-emitting parts 12 is provided on the front surface 13
  • the other sound-emitting part 12 is provided on the top side surface 15 . This can also ensure that the sound output part 12 has a good coupling effect with the ear when the user is talking, so that the user can clearly answer the sound from the sound output part 12, improve the user's call answering effect, and can achieve a better acoustic dipole effect. .
  • the two diaphragms 233 are spaced apart in the arrangement direction of the front surface 13 and the rear surface 14 . That is to say, the two diaphragms 233 are arranged in parallel between the front 13 and the back 14, so that the size of the diaphragm 233 can be ensured to be larger, the sound emission effect can be improved, and the space occupied by the sound emission device 20 in the thickness direction of the casing 10 can be reduced. It is beneficial to reduce the thickness of electronic equipment.
  • the two diaphragms 233 may also be spaced apart in a direction perpendicular to the arrangement direction of the front surface 13 and the rear surface 14 .
  • the sound outlet portion 12 includes a plurality of first sound outlet holes, and the plurality of first sound outlet holes are all communicated with the sound outlet cavity 111 .
  • the plurality of first sound holes are distributed at intervals along the same direction, for example, the plurality of first sound holes are distributed at intervals along the length direction of the top side surface 15 .
  • the arrangement of the plurality of first sound holes in this way can not only ensure the sound output area, but also reduce the size of the first sound hole and reduce the first sound hole. The possibility of foreign matter such as dust entering the sound hole.
  • the sound outlet 12 may also be an elongated hole.
  • the housing 10 is provided with a first limiting step 16 and a second limiting step 17 in the installation cavity 11 , and the periphery of the sounding device 20 is clamped by the first limiting step 16 and the second limiting step between 17. That is, the peripheral edge of the side of the sounding device 20 away from the first limiting step 16 is in contact with the second limiting step 17 , and the peripheral edge of the side of the sounding device 20 away from the second limiting step 17 is in contact with the first limiting step 17 . Step 16. In this way, the movement of the sounding device 20 can be better restricted, and the stability of the sounding device 20 can be improved.
  • the peripheral surface of the sounding device 20 may also be connected to the casing 10 .
  • the sound generating device 20 further includes at least one cover plate 24 , the cover plate 24 is covered on the side of one of the diaphragms 233 away from the other diaphragm 233 , and the cover plate 24 is connected to the side of the other diaphragm 233 .
  • a vibration cavity is formed between the vibrating membranes 233 , and the cover plate 24 is provided with a second sound outlet hole 241 that communicates the vibration cavity and the sound outlet cavity 111 .
  • a cover plate 24 is provided on the side of any diaphragm 233 away from the other diaphragm 233.
  • the cover plate 24 may be provided only on one side of one of the diaphragms 233, or the cover plate 24 may not be provided.
  • the cover plate 24 includes a protruding portion 243 that protrudes in a direction away from the diaphragm 233 and an annular connecting portion 242 arranged around the periphery of the protruding portion 243.
  • the annular connecting portion 242 is connected to the fixed shell 21, and the second sound outlet hole 241 is provided on the raised portion 243 .
  • the middle of the inner surface of the cover plate 24 (the surface facing the diaphragm 233 ) is concave in the direction away from the diaphragm 233
  • the outer surface of the cover plate 24 (the surface away from the diaphragm 233 ) is correspondingly raised to form a raised portion 243
  • the inner surface of the cover plate 24 can be made to avoid the vibrating film 233 , so as to provide a larger vibration space for the vibration of the diaphragm 233 , and prevent the vibration film 233 from interfering with the cover plate 24 when vibrating.
  • the raised portion 243 can be in contact with the cavity wall of the sound-emitting cavity 111 to increase the stability of the sound-emitting device 20 .
  • the raised portion 243 may also be spaced apart from the cavity wall of the sound-emitting cavity 111 .
  • the first limiting step 16 (the second limiting step 17 ) abuts against the corresponding annular connecting portion 242 of the cover plate 24 , that is, the first limiting step 16 (the second limiting step 17 ) abuts The annular connecting portion 242 faces away from the surface of the other cover plate 24 .
  • a sound output groove 244 is provided on the side of the raised portion 243 away from the diaphragm 233, and the sound output groove 244 is arranged through two ends.
  • the sound outlet groove 244 is provided with a second sound outlet hole 241 . That is, both ends of the sound outlet groove 244 penetrate through the peripheral surface of the raised portion 243 so that the two ends of the sound outlet groove 244 communicate with the sound outlet cavity 111 .
  • the bottom of the sound outlet groove 244 is provided with a second sound outlet hole 241 .
  • This arrangement can ensure that the distance between the groove bottom of the sound-emitting groove 244 and the cavity wall of the sound-emitting cavity 111 is relatively large, and even when the raised portion 243 is in contact with the cavity wall of the sound-emitting cavity 111 , the sound-emitting groove 244 can be avoided.
  • the second sound outlet hole 241 inside is blocked, so as to ensure the normal transmission of sound.
  • the outer peripheral surface of the raised portion 243 is also provided with a second sound outlet hole 241 to increase the sound transmission area between the vibration cavity and the sound outlet cavity 111, even if the raised portion 243 faces away from the surface of the other cover plate 24 and the outlet.
  • the second sound outlet hole 241 on the outer peripheral surface of the raised portion 243 can also be prevented from being blocked, thereby ensuring the positive transmission of sound.
  • the sound output effect of the sound generating device 20 is guaranteed.
  • the outer peripheral surface of the raised portion 243 is provided with an inclined surface, so that more second sound holes 241 can be provided on the outer peripheral surface of the raised portion 243 .
  • the magnetic circuit system 22 has various structures.
  • the magnetic circuit system 22 includes a central magnetic circuit structure and a side magnetic circuit structure, and the central magnetic circuit structure includes a central magnet 223 ,
  • the two central magnetic conductive plates 221 are respectively disposed on the upper and lower sides of the central magnet 223.
  • Each central magnetic conductive plate 221 includes a first magnetic conductive portion 226 corresponding to the central magnet 223.
  • the central magnet 223 is disposed on the two first magnetic conductive plates.
  • at least one central magnetic conductive plate 221 includes a first connection part 227 extending from the edge of the first magnetic conductive part 226 to the outside, and the first connection part 227 is connected to the fixed shell 21;
  • the magnetic circuit system 22 includes a central magnetic circuit structure and a side magnetic circuit structure.
  • the central magnetic circuit structure includes a central magnet 223 and two central magnetic conducting plates 221 respectively disposed on the upper and lower sides of the central magnet 223.
  • Each central magnetic conducting plate 221 includes The first magnetic conductive portion 226 corresponding to the central magnet 223, at least one central magnetic conductive plate 221 includes a first connecting portion 227 extending from the corner of the first magnetic conductive portion 226, and the central magnet 223 is provided on the two first magnetic conductive portions. Between the magnetic parts 226 , the first connecting part 227 protrudes toward the side of the central magnet 223 and is connected to the fixed shell 21 .
  • the side magnetic circuit structure is fixed on the fixed shell 21 , and the side magnetic circuit structure includes a side magnet 224 arranged around the central magnet 223 and two side magnetic conducting plates 222 arranged on the upper and lower sides of the side magnet 224 .
  • the side magnet 224 is connected to the first connecting portion. 227 are distributed at intervals in the circumferential direction of the central magnet 223, and a magnetic gap 220 is formed between the central magnet 223 and the central magnetic conductive plate 221 and the side magnets 224 and the side magnetic conductive plate 222; wherein, the side magnetic conductive plate 222 and the central magnetic conductive plate 221
  • the first connecting part 227 of the fuselage can be connected as a whole, and can also be set as a separate body.
  • Each vibration system 23 includes two flat voice coils 231 , the central axes of the two flat voice coils 231 are perpendicular to the vibration directions of the two vibration systems 23 , wherein the two flat voice coils 231 of one vibration system 23 are along the first horizontal square
  • the two flat voice coils 231 of the other vibration system 23 are arranged along the second horizontal direction perpendicular to the first horizontal direction and extend into the opposite parts of the magnetic gap 220. in two parts.
  • the up-down direction is the vibration direction of the two vibration systems 23
  • the up-down direction is perpendicular to the first horizontal direction and the second horizontal direction.
  • the central magnet 223 By arranging the central magnet 223 on the first magnetic conducting portion 226 of the central magnetic conducting plate 221 , and extending the first connecting portion 227 of the central magnetic conducting plate 221 toward the outside of the central magnet 223 to connect with the fixed shell 21 , the first connecting portion 227 of the central magnet conducting plate 221 is A connecting portion 227 and the side magnets 224 of the magnetic circuit system 22 are distributed at intervals in the circumferential direction of the central magnet 223 .
  • the central magnet 223 can be fixed by connecting the first connecting portion 227 and the fixed shell 21, and the first connecting portion 227 can also be prevented from occupying the gap between the central magnetic circuit structure and the side magnetic circuit structure, so as to ensure the flatness.
  • the width of the magnetic gap 220 between the central magnetic circuit structure and the side magnetic circuit structure can be made smaller, so that the placement space of the inner side magnets 224 and the central magnets 223 of the fixed shell 21 can be increased, so as to reduce the width of the magnetic gap 220.
  • the volume of the side magnet 224 or the center magnet 223 can be increased, the magnetic performance of the sounding device 20 can be improved, the effective magnetic field strength that can be obtained by the flat voice coils 231 of the two vibration systems 22 is larger, the sound loudness of the sounding device 20 can be enhanced, and the Acoustic performance of the sound generating device 20 .
  • the flat voice coil 231 and the first connecting portion 227 are distributed at intervals in the circumferential direction of the central magnet 223 .
  • the flat voice coil 231 has two wire segments spaced along the arrangement direction (vibration direction) of the two diaphragms 233 , and the two wire segments of the flat voice coil 231 are both located in the magnetic gap 220 , that is, the flat voice coil 231 has two wire segments.
  • One wire segment of the coil 231 is at least partially located in the magnetic gap 220 formed by the center magnetic conductive plate 221 and the side magnetic conductive plate 222 on one side of the central magnet 223
  • the other wire segment of the flat voice coil 231 is at least partially located in the central magnet 223 In the magnetic gap 220 formed by the center magnetic conductive plate 221 and the side magnetic conductive plate 222 on the other side.
  • the connecting portion 227 and the flat voice coil 231 share a space in the depth direction of the magnetic gap 220
  • the space in the depth direction of the magnetic gap 220 can also be fully utilized, thereby improving the space utilization rate. Therefore, the vibration space of the flat voice coil 231 in the magnetic gap 220 can be increased, and the vibration effect of the vibration system 23 can be improved.
  • it can ensure that both wire segments of the flat voice coil 231 can be in an effective magnetic field, ensure that the effective magnetic field strengths of the voice coils of the two vibration systems 23 are relatively large, and enhance the sound loudness of the sound generating device.
  • the wire segment of the flat voice coil 231 of the vibration system 23 away from its vibrating membrane 233 can also be extended into the magnetic gap 220, and the wire segment of the flat voice coil 231 of the vibration system 23 close to its vibrating membrane 233 is located in the magnetic gap 220. outside the magnetic gap 220 .
  • the two central magnetic conductive plates 221 both include a first magnetic conductive portion 226 and a first connection portion 227 , the first connection portions 227 of the two central magnetic conductive plates 221 are disposed opposite to each other, and the two central magnetic conductive plates The first connecting portions 227 of the 221 are bent toward each other, and are connected to each other.
  • each central magnetic conductive plate 221 includes a first magnetic conductive portion 226 and a first connection portion 227 , the central magnet 223 is disposed between the two first magnetic conductive portions 226 , and each of the first connection portions 227 is disposed in the phase Between the adjacent two side magnets 224 , the first connecting portion 227 of each central magnetic conducting plate 221 is bent in the direction of the other central magnetic conducting plate 221 , so as to be connected with the first connection of the other central magnetic conducting plate 221 .
  • the parts 227 are connected, so that the stability of the central magnet 223 between the two central magnetic conducting plates 221 can be increased.
  • the first connecting portion 227 may also be straight, that is, the first connecting portion 227 is not bent, or the first connecting portion 227 of the two central magnetic conducting plates 221 is connected through a connecting structure.
  • a connecting piece is provided on the first connecting portion 227 of the two central magnetic conducting plates 221 .
  • the central magnetic conducting plate 221 at least includes two first connecting portions 227 respectively disposed on two opposite sides of the first magnetic conducting portion 226 . That is, the central magnetic conductive plate 221 can be connected to the fixed shell 21 through the first connecting portions 227 on the opposite sides of the first magnetic conductive portion 226, which not only increases the connection area between the central magnetic conductive plate 221 and the fixed shell 21, but also makes the first The two opposite sides of the magnetic conductive portion 226 are uniformly stressed, so that the stability of the central magnetic conductive plate 221 can be improved, and the magnetic circuit system 22 can be kept stable during the vibration process.
  • the number of the first connecting parts 227 may also be three, four or more, and so on. Of course, in other embodiments, the first connecting portion 227 may only be on one side of the first magnetic conducting portion 226 .
  • the side magnetic conducting plate 222 includes a second connecting portion 251 and a side magnetic conducting portion 252 , the second connecting portion 251 is annular and is connected to the fixed shell 21 , and the side magnetic conducting portion 252 is connected to the second connecting portion 251 .
  • the side magnets 224 are provided with side magnetic conductive portions 252 on the surfaces of the side magnets 224 facing the two diaphragms 233 .
  • the magnetic circuit system 22 includes two side magnetic conductive plates 222 , one of which is disposed on the side of the side magnet 224 facing one of the diaphragms 233 , and the other side magnetic conductive plate 222 is disposed on the side magnet 224 faces the side of the other diaphragm 233 , and each side magnetic conducting plate 222 includes a second connecting portion 251 and a side magnetic conducting portion 252 .
  • a plurality of side magnetic conductive parts 252 can be provided inside the second connection part 251 , and the number of the side magnetic conductive parts 252 can be set according to the number of the side magnets 224 .
  • the second connecting portion 251 and the side magnetic conducting portion 252 are integrally formed. Compared with the way of arranging a plurality of independent side magnetic conducting plates 222, the side magnetic conducting portion 252 and the second connecting portion 251 can be connected as a whole, which can reduce the The number of parts and components of the sounding device is beneficial to reduce the assembly process and improve the production efficiency.
  • the connection stability of the side magnetic conducting plate 222 can be improved.
  • the side magnetic conducting portion 252 may also be annular, so as to be disposed on the surfaces of the plurality of side magnets 224 facing the vibrating film 233 .
  • the first connecting portion 227 is connected to the second connecting portion 251 , and the center magnetic conductive plate and the side magnetic conductive plate are integrally formed. In this way, the center magnetic conductive plate 221 and the side magnetic conductive plate 222 can be easily manufactured and formed, and the connection process of the central magnetic conductive plate 221 and the side magnetic conductive plate 222 can be reduced.
  • the first connection portion 227 and the second connection portion 251 may also be welded together.
  • the center magnetic conductive plate 221 and the side magnetic conductive plate 222 may also be provided as separate bodies.
  • the voice coils of the two vibration systems 23 are annular voice coils 231 , and the central axes of the two annular voice coils 231 are parallel to the vibration directions of the two vibration systems 23 .
  • the magnetic circuit system 22 forms two magnetic gaps with openings facing the two diaphragms 233 respectively, and the two annular voice coils 231 respectively protrude into the two magnetic gaps 220 .
  • the voice coils of the two vibration systems 23 are both annular voice coils 231
  • the annular end face of one end of the annular voice coil 231 can be connected to the diaphragm 233, which can ensure the reliability of the connection between the annular voice coil 231 and the diaphragm 233. It is beneficial to simplify the structure of the vibration system.
  • the magnetic circuit system 22 includes a support plate 225, a first magnetic component 228 disposed on a first side of the support plate 225, and a second magnetic component 229 disposed on a second side of the support plate 225.
  • the first magnetic component 228 forms a first magnetic gap
  • the second magnetic assembly 229 forms a second magnetic gap
  • the two annular voice coils 231 respectively extend into the first magnetic gap and the second magnetic gap.
  • the first side of the support plate 225 faces one of the diaphragms 233
  • the second side of the support plate 225 faces the other diaphragm 233 .
  • the first magnetic component 228 is located between the support plate 225 and one of the diaphragms 233
  • the second magnetic component 229 is located between the support plate 225 and the other diaphragm 233 .
  • the support plate 225 can be a simple flat plate structure, which is beneficial to simplify the structure of the sound generating device 20 .
  • two supporting plates 225 may also be provided, and the magnet assembly may be provided between the two supporting plates 225, and so on.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本发明公开一种电子设备，该电子设备包括壳体和发声装置，发声装置包括固定壳、磁路***及两个振动***，磁路***设于固定壳内，每个振动***均包括振膜和连接于振膜的音圈，两个振膜分设于磁路***的两相对侧，并与固定壳连接，两个振动***的音圈均至少部分伸入磁路***的磁间隙。壳体设有安装腔和两个出音部，发声装置将安装腔分隔为两个出声腔，其中一个出音部和一个振膜连通其中一个出声腔，另一个出音部和另一个振膜连通另一个出声腔。电子设备具有外放模式和听筒模式，于外放模式，两个振动***向外辐射相同相位的声波，于听筒模式，两个振动***向外辐射相反相位的声波。本发明技术方案能够降低电子设备声音泄漏的风险。

Description

电子设备 技术领域
本发明涉及声学设备技术领域，特别涉及一种电子设备。
背景技术
在电子设备中，例如手机、平板电脑、手提电脑等，一般会在电子设备内部设置有发声装置。而目前的手机等电子设备在接听电话时，通常存在声音泄漏的问题，非常不利于个人隐私的保护。
发明内容
本发明的主要目的是提出一种电子设备，旨在降低电子设备声音泄漏的风险。
为实现上述目的，本发明提出的电子设备，包括：
发声装置，包括固定壳、磁路***及两个振动***，所述磁路***设于所述固定壳内，每个所述振动***均包括振膜和连接于所述振膜的音圈，两个所述振膜分设于所述磁路***的两相对侧，并与所述固定壳连接，两个所述振动***的音圈均至少部分伸入所述磁路***的磁间隙；以及，
壳体，设有安装腔和两个出音部，所述发声装置将所述安装腔分隔为两个出声腔，其中一个所述出音部和一个所述振膜连通其中一个所述出声腔，另一个所述出音部和另一个所述振膜连通另一个所述出声腔；
所述电子设备具有外放模式和听筒模式，于所述外放模式，两个所述振动***通过各自对应的所述出音部向外辐射相同相位的声波，于所述听筒模式，两个所述振动***通过各自对应的所述出音部向外辐射相反相位的声波。
可选地，所述壳体具有正面、背面和顶侧面，所述正面设有显示部，所述背面与所述正面相对设置，所述顶侧面位于所述背面和所述正面之间；
其中一个所述出音部设于所述正面或者设于所述正面和所述顶侧面的连接处，另一个所述出音部设于所述背面、所述顶侧面或者所述背面与所述顶 侧面的连接处。
可选地，两个所述振膜在所述正面和所述背面的排布方向间隔分布。
可选地，所述出音部包括多个第一出音孔，多个所述第一出音孔均与所述出声腔连通。
可选地，所述壳体于所述安装腔内设有第一限位台阶和第二限位台阶，所述发声装置的周沿夹持于所述第一限位台阶和所述第二限位台阶之间。
可选地，所述发声装置还包括至少一个盖板，所述盖板盖合于其中一个所述振膜背离另一个所述振膜的一侧，所述盖板与所述振膜之间形成振动腔，所述盖板设有连通所述振动腔和所述出声腔的第二出音孔。
可选地，所述盖板包括朝远离所述振膜的方向***的***部和环设于所述***部周缘的环形连接部，所述环形连接部与所述固定壳连接，所述第二出音孔设于所述***部。
可选地，所述***部背离所述振膜的一侧设有出音沟槽，所述出音沟槽呈两端贯通设置，以与所述出声腔连通，所述出音沟槽设有所述第二出音孔。
可选地，所述磁路***包括中心磁路结构和边磁路结构，所述中心磁路结构包括中心磁体、分别设于所述中心磁体上下两侧的两个中心导磁板，每个所述中心导磁板包括与所述中心磁体对应的第一导磁部，所述中心磁体设于两个所述第一导磁部之间，至少一个所述中心导磁板包括由第一导磁部的边缘向外侧延伸设置的第一连接部，所述第一连接部与所述固定壳连接；
所述边磁路结构固定于所述固定壳，所述边磁路结构包括环绕所述中心磁体设置的边磁体以及设于所述边磁体上下两侧的两个边导磁板，所述边磁体与所述第一连接部在所述中心磁体的周向间隔分布，所述中心磁体和所述中心导磁板与所述边磁体和边导磁板之间形成磁间隙；
每个振动***包括两个扁平音圈，所述两个扁平音圈的中心轴线与两个振动***的振动方向垂直，其中一个所述振动***的两个扁平音圈沿第一水平方形排布并伸入所述磁间隙相对的两部分中，另一个所述振动***的两个扁平音圈沿垂直于所述第一水平方向的第二水平方向排布，并伸入所述磁间隙的相对的两部分中。
可选地，所述两个振动***的音圈均为环形音圈，两个环形音圈的中心轴线与两个振动***的振动方向平行；
所述磁路***形成开口分别朝向两个所述振膜的两个磁间隙，两个所述环形音圈分别伸入两个所述磁间隙中。
可选地，所述磁路***包括支撑板和设于所述支撑板第一侧上的第一磁组件以及设于所述支撑板第二侧上的第二磁组件，所述第一磁组件形成第一磁间隙，所述第二磁组件形成第二磁间隙，两个环形音圈分别伸入第一磁间隙和第二磁间隙。
本发明技术方案通过将发声装置将壳体内的安装腔分隔为两个出声腔，并在壳体上对应每一出声腔均设有出音部，而且将发声装置设置两个振动***，使得两个振动***与两个出声腔一一对应，从而可以通过两个出音部发出声音。以在用户使用电子设备通话时，可以将电子设备设于听筒模式，即可以使其中一个出音部靠近耳部，并通过控制两个振动***，使靠近耳部的出音部向外辐射的声波与另一个出音部向外界辐射的声波相位相反。从而能够形成声偶极子效应，使得这两个出音部发出的声音在该电子设备使用者的周边位置处相互抵消，进而能够降低用户使用电子设备通话时声音泄漏的风险，实现电子设备通话时的隐私保护功能。而且由于两个振动***能够独立工作，故而可以随意调节两个振动***的信号及电压等参数，以达到最佳的通话及隐私保护效果。此外，也可以将电子设备设于外放模式，即可以控制两个振动***通过两个出音部向外辐射相同相位声波，可弥补发声装置尺寸带来的音量不足，能有效加大音量，从而可以将出音部处作为扬声器外放声音。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明电子设备一实施例的结构示意图；
图2为图1中电子设备从另一角度看的结构示意图；
图3为图1中电子设备在发声装置处的剖切示意图；；
图4为本发明电子设备另一实施例的结构示意图；
图5为图4中电子设备在发声装置处的剖切示意图；
图6为本发明电子设备又一实施例中在发声装置处的剖切示意图；
图7为图6中A处的放大图；
图8为图6中发声装置的结构示意图；
图9为本发明电子设备再一实施例中在发声装置的***图；
图10为图9中磁路***的***图；
图11为图9中发声装置装配后的剖切示意图。
附图标号说明：
标号 名称 标号 名称
10 壳体 224 边磁体
11 安装腔 225 支撑板
111 出声腔 226 第一导磁部
12 出音部 227 第一连接部
13 正面 228 第一磁组件
14 背面 229 第二磁组件
15 顶侧面 23 振动***
16 第一限位台阶 231 音圈/扁平音圈/环形音圈
17 第二限位台阶 233 振膜
20 发声装置 24 盖板
21 固定壳 241 第二出音孔
22 磁路*** 242 环形连接部
220 磁间隙 243 ***部
221 中心导磁板 244 出音沟槽
222 边导磁板 251 第二连接部
223 中心磁体 252 边导磁部
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提出一种电子设备，该电子设备可以为手机、平板电脑、电脑或智能手表等等。
在本发明实施例中，请结合参考图1至图3，该电子设备包括壳体10和发声装置20，发声装置20包括固定壳21、磁路***22及两个振动***23，磁路***22设于固定壳21内，每个振动***23均包括振膜233和连接于振膜233的音圈231，两个振膜233分设于磁路***22的两相对侧，并与固定壳21连接，两个振动***23的音圈231均至少部分伸入磁路***22的磁间隙220。壳体10设有安装腔11和两个出音部12，发声装置20将安装腔11分隔为两个出声腔111，其中一个出音部12和一个振膜233连通其中一个出声腔111，另一个出音部12和另一个振膜233连通另一个出声腔111。
本实施例中，其中一个振膜233连通其中一个出声腔111，另一个振膜233连通另一个出声腔111，指的是两个振膜233相互背离的一侧的空间分别与两个出声腔111一一对应连通，以在振膜233振动发声时，声音能够从出声腔111和出音部12向壳体10外传出。两个出音部12在壳体10上间隔设置，两个出音部12的出声方向呈夹角或者相反，而两个出音部12可以位于电子设备的不同侧或者其它位置，例如电子设备为智能手表时，两个出音部12均可以设于电子设备的周侧。两个振动***23能够独立工作，且两个振动 ***23的音圈231在同时振动时互不干涉。其中，磁路***22形成有两个磁间隙，两个振动***23的音圈231各自伸入一个磁间隙等等。
电子设备具有外放模式和听筒模式，于外放模式，两个振动***23通过各自对应的出音部12向外辐射相同相位的声波，于听筒模式，两个振动***23通过各自对应的出音部12向外辐射相反相位的声波。即在外放模式时，通过控制两个振膜233朝相反的方向同时振动，使得两个振动***23均通过各自对应的出音部12同时向外辐射正相声波，能有效加大音量，从而可以使该发声装置20作为扬声器外放声音。而在听筒模式下，通过控制两个振膜233朝相同的方向同时振动，使得其中一个振动***23通过对应的出音部12向外辐射正相声波/反相声波时，另一个振动***23通过对应的出音部12向外辐射反相声波/正相声波。在使用电子设备通话时，将其中一个出音部12靠近使用者的耳部，另一个出音部12相对前述出音部12远离使用者的耳部，对于使用者周围的人而言，能够形成声偶极子效应，具体的，两个出音部12之间的距离可以忽略，两个出音部12到周围人的耳部的距离接近，两个振动***23的相反相位的声波到达周围人的耳部位置处相互抵消，达到降低漏音的目的。对于使用者而言，两个出音部12到使用者耳部的距离相对差距较大，不满足声偶极子效应的条件，声波抵消程度较小，所以使用者能收听到响度合适的声音。
本发明技术方案通过将发声装置20将壳体10内的安装腔11分隔为两个出声腔111，并在壳体10上对应每一出声腔111均设有出音部12，而且将发声装置20设置两个振动***23，使得两个振动***23与两个出声腔111一一对应，从而可以通过两个出音部12发出声音。以在用户使用电子设备通话时，可以将电子设备设于听筒模式，即可以使其中一个出音部12靠近耳部，并通过控制两个振动***23，使靠近耳部的出音部12向外辐射的声波与另一个出音部12向外界辐射的声波相位相反。从而能够形成声偶极子效应，使得这两个出音部12发出的声音在该电子设备使用者的周边位置处相互抵消，进而能够降低用户使用电子设备通话时声音泄漏的风险，实现电子设备通话时的隐私保护功能。而且由于两个振动***23能够独立工作，故而可以随意调节两个振动***23的信号及电压等参数，以达到最佳的通话及隐私保护效果。此外，也可以将电子设备设于外放模式，即可以控制两个振动***23通过两 个出音部12向外辐射相同相位声波，可弥补发声装置20尺寸带来的音量不足，能有效加大音量，从而可以将出音部12处作为扬声器外放声音。
本实施例中以电子设备为手机为例进行说明，但不限于此。壳体10具有正面13、背面14和顶侧面15，正面13设有显示部，背面14与正面13相对设置，顶侧面15位于背面14和正面13之间。
两个出音部12的相对位置关系具有多种，例如，一实施例中，其中一个出音部12设于正面13和顶侧面15的连接处，另一个出音部12设于背面14与顶侧面15的连接处。将其中一个出音部12设于正面13和顶侧面15的连接处时，既能够保证用户通话时该出音部12与耳部耦合效果好，使得用户能够清晰接听自该出音部12发出的声音，提升用户通话接听效果。还能减小出音部12在正面13的占用空间，即减小了出音部12占用正面13用于设置屏幕的空间，有利于增大屏幕尺寸，实现全面屏手机。而通过将另一个出音部12设于背面14与顶侧面15的连接处，在将两个出音部12作为扬声器外放声音时，能够提升两个出音部12的配合效果，从而提升外放声音的音量。即如此设置能够达到较好的通话隐私保护功能和扬声器外放功能。当然，在其它实施例中，其中一个出音部12设于正面13，另一个出音部12设于背面14与顶侧面15的连接处。如此也能保证用户通话时该出音部12与耳部耦合效果好，使得用户能够清晰接听自该出音部12发出的声音，提升用户通话接听效果，能够达到较好地声偶极子效应和较好的扬声器外放功能。
另一实施例中，其中一个出音部12设于正面13和顶侧面15的连接处，另一个出音部12设于背面14。如此既能够保证用户通话时该出音部12与耳部耦合效果好，使得用户能够清晰接听自该出音部12发出的声音，提升用户通话接听效果，还能减小出音部12在正面13的占用空间。而通过将另一个出音部12设于背面14。能够使得设于背面14的出音部12远离设于正面13和顶侧面15的连接处出音部12，能够达到更好地声偶极子效应，进一步降低漏音风险。当然，在其它实施例中，其中一个出音部12设于正面13，另一个出音部12设于背面14。如此也能保证用户通话时该出音部12与耳部耦合效果好，使得用户能够清晰接听自该出音部12发出的声音，提升用户通话接听效果，能够达到较好地声偶极子效应。
再一实施例中，请结合参考图4和图5，其中一个出音部12设于正面13 和顶侧面15的连接处，另一个出音部12设于顶侧面15。如此既能够保证用户通话时该出音部12与耳部耦合效果好，使得用户能够清晰接听自该出音部12发出的声音，提升用户通话接听效果，还能减小出音部12在正面13的占用空间。在将两个出音部12作为扬声器外放声音时，能够提升两个出音部12的配合效果，从而提升外放声音的音量。当然，在其它实施例中，其中一个出音部12设于正面13，另一个出音部12设于顶侧面15。如此也能保证用户通话时该出音部12与耳部耦合效果好，使得用户能够清晰接听自该出音部12发出的声音，提升用户通话接听效果，能够达到较好地声偶极子效应。
请参考图3，一实施例中，两个振膜233在正面13和背面14的排布方向间隔分布。即两个振膜233并行设置于正面13和背面14之间，如此既能够保证振膜233的尺寸较大，提升发声效果，也能够减小发声装置20在壳体10厚度方向的占用空间，有利于减小电子设备的厚度。当然，在其它实施例中，也可以将两个振膜233在垂直于正面13和背面14的排布方向的方向间隔分布。
一实施例中，出音部12包括多个第一出音孔，多个第一出音孔均与出声腔111连通。具体而言，多个第一出音孔沿同一方向间隔分布，例如多个第一出音孔沿顶侧面15的长度方向间隔分布。相较于将出音部12设置为一长条状的孔结构时，如此设置多个第一出音孔既能保证出声面积，也能减小第一出音孔的尺寸，降低第一出音孔内进入灰尘等异物的可能。当然，在其它实施例中，出音部12也可以为长条孔。
一实施例中，壳体10于安装腔11内设有第一限位台阶16和第二限位台阶17，发声装置20的周沿夹持于第一限位台阶16和第二限位台阶17之间。即发声装置20背离第一限位台阶16的一侧的周沿抵接于第二限位台阶17，发声装置20背离第二限位台阶17的一侧的周沿抵接于第一限位台阶16。如此能够较好地限制发声装置20运动，提升发声装置20的稳定性。当然，在其它实施例中，也可以将发声装置20的周面与壳体10连接。
请结合参考图6至图8，一实施例中，发声装置20还包括至少一个盖板24，盖板24盖合于其中一个振膜233背离另一个振膜233的一侧，盖板24与振膜233之间形成振动腔，盖板24设有连通振动腔和出声腔111的第二出音孔241。本实施例中，任意一个振膜233背离另一个振膜233的一侧均设有 一个盖板24，通过设置盖板24，能够对振膜233提供有效防护，例如在装配过程状，能够避免振膜233暴露在外，从而降低振膜233在装配的过程中被划伤的风险。当然，在其它实施例中，也可以仅在其中一个振膜233的一侧设有盖板24，或者也可以不设置盖板24。
一实施例中，盖板24包括朝远离振膜233的方向***的***部243和环设于***部243周缘的环形连接部242，环形连接部242与固定壳21连接，第二出音孔241设于***部243。即盖板24的内表面(朝向振膜233的表面)的中部朝远离振膜233的方向凹陷，并在盖板24的外表面(背离振膜233的表面)对应***形成***部243，如此能够使得盖板24的内表面避让振膜233，为振膜233的振动提供较大的振动空间，避免振膜233在振动时与盖板24干涉。其中，***部243可以与出声腔111的腔壁抵接，以增加发声装置20的稳定性。当然，***部243也可以与出声腔111的腔壁间隔。一实施例中，第一限位台阶16(第二限位台阶17)抵接于对应的盖板24的环形连接部242，即第一限位台阶16(第二限位台阶17)抵接于环形连接部242背离另一盖板24的表面。
设置盖板24时，为保证获得较好的出音效果，一实施例中，***部243背离振膜233的一侧设有出音沟槽244，出音沟槽244呈两端贯通设置，以与出声腔111连通，出音沟槽244设有第二出音孔241。即出音沟槽244的两端贯穿***部243的周面，以使出音沟槽244的两端与出声腔111连通，出音沟槽244的槽底设有第二出音孔241。如此设置，能够保证出音沟槽244的槽底与出声腔111的腔壁之间的间距较大，即使***部243与出声腔111的腔壁抵接时，也能避免出音沟槽244内的第二出音孔241被堵塞，从而保证声音的正常传递。
一实施例中，***部243的外周面也设有第二出音孔241，以增加振动腔与出声腔111之间的传声面积，即使***部243背离另一盖板24的表面与出声腔111的腔壁抵接时，也能避免***部243的外周面的第二出音孔241被堵塞，从而保证声音的正传递。保证发声装置20的出音效果。一实施例中，***部243的外周面呈斜面设置，以能够在***部243的外周面设置更多的第二出音孔241。
请结合参考图9至图11，磁路***22的结构具有多种，例如，一实施例 中，磁路***22包括中心磁路结构和边磁路结构，中心磁路结构包括中心磁体223、分别设于中心磁体223上下两侧的两个中心导磁板221，每个中心导磁板221包括与中心磁体223对应的第一导磁部226，中心磁体223设于两个第一导磁部226之间，至少一个中心导磁板221包括由第一导磁部226的边缘向外侧延伸设置的第一连接部227，第一连接部227与固定壳21连接；
磁路***22包括中心磁路结构和边磁路结构，中心磁路结构包括中心磁体223、分别设于中心磁体223上下两侧的两个中心导磁板221，每个中心导磁板221包括与中心磁体223对应的第一导磁部226，至少一个中心导磁板221包括由第一导磁部226的角部延伸设置的第一连接部227，中心磁体223设于两个第一导磁部226之间，第一连接部227朝中心磁体223的侧向凸出，并与固定壳21连接。
边磁路结构固定于固定壳21，边磁路结构包括环绕中心磁体223设置的边磁体224以及设于边磁体224上下两侧的两个边导磁板222，边磁体224与第一连接部227在中心磁体223的周向间隔分布，中心磁体223和中心导磁板221与边磁体224和边导磁板222之间形成磁间隙220；其中，边导磁板222与中心导磁板221的第一连接部227可以连接为一体，也可以分体设置。
每个振动***23包括两个扁平音圈231，两个扁平音圈231的中心轴线与两个振动***23的振动方向垂直，其中一个振动***23的两个扁平音圈231沿第一水平方形排布并伸入磁间隙220相对的两部分中，另一个振动***23的两个扁平音圈231沿垂直于第一水平方向的第二水平方向排布，并伸入磁间隙220的相对的两部分中。具体而言，上下方向为两个振动***23的振动方向，上下方向垂直于第一水平方向和第二水平方向。
通过将中心磁体223设于中心导磁板221的第一导磁部226，并使得中心导磁板221的第一连接部227朝中心磁体223的外侧延伸而与固定壳21连接，再将第一连接部227与磁路***22的边磁体224在中心磁体223的周向间隔分布。如此既能通过第一连接部227与固定壳21的连接而实现中心磁体223的固定，也能避免第一连接部227占用中心磁路结构和边磁路结构之间间隙情况，从而在保证扁平音圈231正常振动的情况下，可以使得中心磁路结构和边磁路结构之间的磁间隙220宽度较小，从而可以增大固定壳21内边磁体224和中心磁体223的放置空间，以能增加边磁体224或中心磁体223的体积， 提升发声装置20的磁性能，使得两个振动***22的扁平音圈231可获得的有效磁场强度较大，增强发声装置20的声音响度，能提升发声装置20的声学性能。
一实施例中，扁平音圈231与第一连接部227在中心磁体223的周向间隔分布。具体而言，扁平音圈231具有沿两个振膜233的排布方向(振动方向)间隔分布的两个导线段，扁平音圈231的两个导线段均位于磁间隙220中，即扁平音圈231的其中一个导线段至少部分位于中心磁体223其中一侧的中心导磁板221与边导磁板222形成的磁间隙220中，扁平音圈231的另一个导线段至少部分位于中心磁体223另一侧的中心导磁板221与边导磁板222形成的磁间隙220中。如此避免了两个振动***23的扁平音圈231之间存在第一连接部227时，第一连接部227占用磁间隙220在深度方向(即振动方向)的空间的情况，即避免了第一连接部227和扁平音圈231在磁间隙220的深度方向共用空间的情况，还能充分利用磁间隙220深度方向的空间，提升空间利用率。从而可以增大扁平音圈231在磁间隙220中的振动空间，提升振动***23的振动效果。而且能保证扁平音圈231的两个导线段均能够处于有效磁场中，保证两个振动***23的音圈可获得的有效磁场强度较大，增强发声装置的声音响度。当然，在其它实施例中，也可以将振动***23的扁平音圈231远离其振膜233的导线段伸入磁间隙220，振动***23的扁平音圈231靠近其振膜233的导线段位于磁间隙220外。
一实施例中，两个中心导磁板221均包括第一导磁部226和第一连接部227，两个中心导磁板221的第一连接部227相对设置，且两个中心导磁板221的第一连接部227呈相互朝向弯折的弯折状，并相互连接。即每一中心导磁板221均包括第一导磁部226和第一连接部227，中心磁体223设于两个第一导磁部226之间，每一个第一连接部227均设于相邻两个边磁体224之间，每一个中心导磁板221的第一连接部227均朝另一中心导磁板221的方向弯折设置，以与另一中心导磁板221的第一连接部227连接，如此能够增加中心磁体223在两个中心导磁板221之间的稳定性。当然，在其它实施例中，第一连接部227也可以呈平直状，即第一连接部227不弯折，或者两个中心导磁板221的第一连接部227之间通过连接结构进行连接，例如在两个中心导磁板221的第一连接部227设置连接件。
一实施例中，中心导磁板221至少包括分设于第一导磁部226的两相对侧的两个第一连接部227。即中心导磁板221能够通过第一导磁部226两相对侧的第一连接部227与固定壳21连接，既增大了中心导磁板221与固定壳21的连接面积，也使得第一导磁部226两相对侧受力均匀，从而能提升中心导磁板221的稳定性，保证磁路***22在振动过程中保持稳定。一些实施例中，第一连接部227的数量还可以为三个、四个或更多等等。当然，在其它实施例中，也可以仅在第一导磁部226的一侧第一连接部227。
进一步地，一实施例中，边导磁板222包括第二连接部251和边导磁部252，第二连接部251呈环状，并与固定壳21连接，边导磁部252连接于第二连接部251的内侧，边磁体224朝向两个振膜233的表面均设有边导磁部252。具体而言，磁路***22包括两个边导磁板222，其中一个边导磁板222设于边磁体224朝向其中一个振膜233的一侧，另一个边导磁板222设于边磁体224朝向另一个振膜233的一侧，每一个边导磁板222均包括第二连接部251和边导磁部252。
可以在第二连接部251的内侧设置多个边导磁部252，边导磁部252的数量可以根据边磁体224的数量设置，如可以对应每一边磁体224设有一个边导磁部252。使得第二连接部251与边导磁部252一体成型，相较于设置多个独立边导磁板222的方式，如此可以使得边导磁部252与第二连接部251连接为一体，能够减少发声装置的零部件数量，从而有利于减少装配工序，提高生产效率。而且通过第二连接部251的外周缘与固定壳21连接，能够提升边导磁板222的连接稳定性。当然，在其它实施例中，边导磁部252也可以呈环状，以能够设于多个边磁体224的朝向振膜233的表面。
一实施例中，第一连接部227与第二连接部251连接，中心导磁板与边导磁板为一体成型结构。如此能便于中心导磁板221和边导磁板222制造成型，减少中心导磁板221和边导磁板222的连接工序。当然，在其它实施例中，也可以将第一连接部227与第二连接部251焊接在一起。另外，在其它实施例中，还可以将中心导磁板221和边导磁板222分体设置。
另外，请参照图3，在一实施例中，两个振动***23的音圈均为环形音圈231，两个环形音圈231的中心轴线与两个振动***23的振动方向平行。磁路***22形成开口分别朝向两个振膜233的两个磁间隙，两个环形音圈231 分别伸入两个磁间隙220中。两个振动***23的音圈均为环形音圈231时，可以使得环形音圈231一端的环形端面连接在振膜233上，能够保证环形音圈231和振膜233的连接可靠性，也有利于简化振动***的结构。
一实施例中，磁路***22包括支撑板225和设于支撑板225第一侧上的第一磁组件228以及设于支撑板225第二侧上的第二磁组件229，第一磁组件228形成第一磁间隙，第二磁组件229形成第二磁间隙，两个环形音圈231分别伸入第一磁间隙和第二磁间隙。具体而言，支撑板225的第一侧朝向其中一个振膜233，支撑板225的第二侧朝向另一个振膜233。即第一磁组件228位于支撑板225和其中一个振膜233之间，第二磁组件229位于支撑板225和另一个振膜233之间。如此支撑板225可以为简单的平板结构，有利于简化发声装置20的结构。当然，在其它实施例中，也可以设置两个支撑板225，将磁体组件设于两个支撑板225之间等等。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (11)

  1. 一种电子设备，其特征在于，包括：
    发声装置，包括固定壳、磁路***及两个振动***，所述磁路***设于所述固定壳内，每个所述振动***均包括振膜和连接于所述振膜的音圈，两个所述振膜分设于所述磁路***的两相对侧，并与所述固定壳连接，两个所述振动***的音圈均至少部分伸入所述磁路***的磁间隙；以及，
    壳体，设有安装腔和两个出音部，所述发声装置将所述安装腔分隔为两个出声腔，其中一个所述出音部和一个所述振膜连通其中一个所述出声腔，另一个所述出音部和另一个所述振膜连通另一个所述出声腔；
    所述电子设备具有外放模式和听筒模式，于所述外放模式，两个所述振动***通过各自对应的所述出音部向外辐射相同相位的声波，于所述听筒模式，两个所述振动***通过各自对应的所述出音部向外辐射相反相位的声波。
  2. 如权利要求1所述的电子设备，其特征在于，所述壳体具有正面、背面和顶侧面，所述正面设有显示部，所述背面与所述正面相对设置，所述顶侧面位于所述背面和所述正面之间；
    其中一个所述出音部设于所述正面或者设于所述正面和所述顶侧面的连接处，另一个所述出音部设于所述背面、所述顶侧面或者所述背面与所述顶侧面的连接处。
  3. 如权利要求2所述的电子设备，其特征在于，两个所述振膜在所述正面和所述背面的排布方向间隔分布。
  4. 如权利要求1所述的电子设备，其特征在于，所述出音部包括多个第一出音孔，多个所述第一出音孔均与所述出声腔连通。
  5. 如权利要求1所述的电子设备，其特征在于，所述壳体于所述安装腔内设有第一限位台阶和第二限位台阶，所述发声装置的周沿夹持于所述第一限位台阶和所述第二限位台阶之间。
  6. 如权利要求1所述的电子设备，其特征在于，所述发声装置还包括至少一个盖板，所述盖板盖合于其中一个所述振膜背离另一个所述振膜的一侧，所述盖板与所述振膜之间形成振动腔，所述盖板设有连通所述振动腔和所述出声腔的第二出音孔。
  7. 如权利要求4所述的电子设备，其特征在于，所述盖板包括朝远离所述振膜的方向***的***部和环设于所述***部周缘的环形连接部，所述环形连接部与所述固定壳连接，所述第二出音孔设于所述***部。
  8. 如权利要求6所述的电子设备，其特征在于，所述***部背离所述振膜的一侧设有出音沟槽，所述出音沟槽呈两端贯通设置，以与所述出声腔连通，所述出音沟槽设有所述第二出音孔。
  9. 如权利要求1至8任意一项所述的电子设备，其特征在于，所述磁路***包括中心磁路结构和边磁路结构，所述中心磁路结构包括中心磁体、分别设于所述中心磁体上下两侧的两个中心导磁板，每个所述中心导磁板包括与所述中心磁体对应的第一导磁部，所述中心磁体设于两个所述第一导磁部之间，至少一个所述中心导磁板包括由第一导磁部的边缘向外侧延伸设置的第一连接部，所述第一连接部与所述固定壳连接；
    所述边磁路结构固定于所述固定壳，所述边磁路结构包括环绕所述中心磁体设置的边磁体以及设于所述边磁体上下两侧的两个边导磁板，所述边磁体与所述第一连接部在所述中心磁体的周向间隔分布，所述中心磁体和所述中心导磁板与所述边磁体和边导磁板之间形成磁间隙；
    每个振动***包括两个扁平音圈，所述两个扁平音圈的中心轴线与两个振动***的振动方向垂直，其中一个所述振动***的两个扁平音圈沿第一水平方形排布并伸入所述磁间隙相对的两部分中，另一个所述振动***的两个扁平音圈沿垂直于所述第一水平方向的第二水平方向排布，并伸入所述磁间隙的相对的两部分中。
  10. 如权利要求1至8任意一项所述的电子设备，其特征在于，所述两个振动***的音圈均为环形音圈，两个环形音圈的中心轴线与两个振动***的振动方向平行；
    所述磁路***形成开口分别朝向两个所述振膜的两个磁间隙，两个所述环形音圈分别伸入两个所述磁间隙中。
  11. 如权利要求10所述的电子设备，其特征在于，所述磁路***包括支撑板和设于所述支撑板第一侧上的第一磁组件以及设于所述支撑板第二侧上的第二磁组件，所述第一磁组件形成第一磁间隙，所述第二磁组件形成第二磁间隙，两个环形音圈分别伸入第一磁间隙和第二磁间隙。
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