WO2021093628A1 - 扬声器及电子设备 - Google Patents

扬声器及电子设备 Download PDF

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Publication number
WO2021093628A1
WO2021093628A1 PCT/CN2020/126013 CN2020126013W WO2021093628A1 WO 2021093628 A1 WO2021093628 A1 WO 2021093628A1 CN 2020126013 W CN2020126013 W CN 2020126013W WO 2021093628 A1 WO2021093628 A1 WO 2021093628A1
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WO
WIPO (PCT)
Prior art keywords
bristles
vibration
speaker
brush portion
vibrating unit
Prior art date
Application number
PCT/CN2020/126013
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English (en)
French (fr)
Inventor
金明昱
杨文涛
阮琼
Original Assignee
华为技术有限公司
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Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2021093628A1 publication Critical patent/WO2021093628A1/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
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • 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

Definitions

  • This application relates to the technical field of speakers, and in particular to a speaker and electronic equipment.
  • the damping block is arranged above and below the speaker, which undoubtedly increases the overall height dimension.
  • the technical problem to be solved by the embodiments of the present application is to provide a speaker and an electronic device that can reduce the thickness.
  • an embodiment of the present application provides a loudspeaker including a vibrating unit and a first brush portion.
  • the vibrating unit includes a sound-emitting surface, a side surface, and a bottom surface, and the sound-emitting surface is disposed opposite to the bottom surface.
  • the side surface is fixedly connected between the sound emitting surface and the bottom surface
  • the first brush portion is fixed on the side surface
  • the first brush portion includes a plurality of first bristles, and the first bristles It is used to bend and deform when the vibrating unit vibrates and produces sound.
  • the first bristle can be bent and deformed due to the vibration of the vibrating unit itself and/or friction with peripheral devices. Since the vibration energy of the vibrating unit is at least partially converted into the elastic potential energy of the first bristles, the vibration of the speaker is reduced, and the influence of the vibration of the speaker on the peripheral devices is also reduced. Since the first brush part is arranged on the side of the vibrating unit instead of on the sound emitting surface and the bottom surface of the vibrating unit, it is beneficial to reduce the thickness of the speaker.
  • the speaker further includes a housing and a second brush portion, the vibration unit is accommodated in the housing, the second brush portion is fixed on the inner wall of the housing, and the second The brush portion includes a plurality of second bristles, the plurality of first bristles and the plurality of second bristles are arranged alternately, and the plurality of first bristles and the plurality of second bristles are used when the vibrating unit vibrates and produces sound
  • the mutual friction and bending deformation further enhance the vibration damping effect of the loudspeaker and improve the vibration isolation performance of the loudspeaker.
  • the plurality of first bristles and the plurality of second bristles are arranged alternately, which can effectively prevent dust from entering the vibrating unit.
  • the speaker further includes a support, the vibrating monomer is arranged on the support, and the bottom surface of the support is in contact with the support, which is beneficial to improve the performance of the vibrating monomer. Stability, which helps to improve the sound effect of the speaker.
  • the vibrating monomer is provided on the support, there may be a certain gap between the adjacent first and second bristles (that is, no contact), or the adjacent first and second bristles
  • the bristles can also be in contact with each other, as long as the vibration unit vibrates, the first bristles and the second bristles can rub against each other and deform.
  • the support is a flexible support, such as foam or sponge, so that the support can absorb part of the vibration energy while providing support for the vibrating unit, which can improve the vibration isolation effect of the speaker.
  • the adjacent first bristles and the second bristles are in contact with each other, and the vibrating unit is supported by the first and second bristles.
  • the structure of the speaker can be simplified, and the volume and space occupied by the speaker can be reduced.
  • the materials of the first bristles and the second bristles include silica gel. Since silica gel has better wear resistance, it is beneficial to prolong the service life of the first brush part and the second brush part.
  • the vibration unit includes an inner shell, a vibration system, and a drive system, the vibration system and the drive system are fixed in the inner shell, and the first brush part is fixed in the inner shell.
  • the drive system is used to drive the vibration system to vibrate and produce sound
  • the drive system is a magnetic circuit system
  • the drive system is a piezoelectric system.
  • the driving system is a magnetic circuit system, and the vibration system is driven by a magnetic field to vibrate and produce sound, which can obtain better sound effects.
  • the driving system is a piezoelectric system, and the driving system includes a piezoelectric element attached to the vibration system. By controlling the voltage applied to the piezoelectric element, the piezoelectric element is deformed to drive the The vibration system vibrates and produces sound.
  • the piezoelectric principle is used to drive the vibration system to vibrate and produce sound. Because there is no need to set a magnetic circuit, the structure of the vibration unit is simple, which is convenient for production and preparation.
  • the first brush portion further includes a first connecting plate, the first connecting plate is fixed on the side of the vibrating unit, and the first bristles are fixed on the first connecting plate away from the place.
  • One side of the vibrating unit facilitates the assembly of the first brush part to the vibrating unit.
  • the second brush portion further includes a second connecting plate, the second connecting plate is fixed on the inner wall of the housing, and the second bristles are fixed on the second connecting plate toward the vibration
  • One side of the single body facilitates the assembly of the second brush part on the inner wall of the housing.
  • the first connecting board and/or the second connecting board are flexible boards, and the flexible board has a certain vibration absorption performance, which can improve the vibration damping effect.
  • the flexible board can also be impacted on the speaker ( Such as impact) play a certain buffering effect.
  • an embodiment of the present application also provides an electronic device, including the speaker and a processor as described above, and the processor is configured to control the vibrating unit to vibrate and produce sound.
  • the speaker drives the first bristles of the first brush portion to bend and deform when vibrating through the vibrating unit, the problems of noise and reliability caused by resonance caused by the vibration of the speaker are effectively improved.
  • the first brush part is arranged on the side of the vibrating unit instead of on the sound emitting surface and the bottom surface of the vibrating unit, it is beneficial to reduce the thickness of the speaker and reduce the space occupied by the speaker in the electronic device.
  • FIG. 1 is a structural block diagram of an electronic device provided by the first embodiment of this application.
  • FIG. 2 is a schematic diagram of an application scenario of the electronic device shown in FIG. 1;
  • FIG. 3 is a schematic diagram of the speaker structure provided by the first embodiment of this application.
  • FIG. 4 is a schematic diagram of a first brush portion and a second brush portion provided by an embodiment of the application;
  • FIG. 5 is a schematic diagram of the structure of the vibration unit part of the speaker shown in FIG. 3;
  • FIG. 6 is a schematic diagram of the speaker structure provided by the second embodiment of this application.
  • FIG. 7 is a schematic diagram of the speaker structure provided by the third embodiment of this application.
  • FIG. 1 is a structural block diagram of an electronic device provided by the first embodiment of this application.
  • the electronic device 200 includes a speaker 100, a processor 201, a communication bus 203, at least one communication interface 205, and a memory 206.
  • the processor 201 is used to control the speaker 100 to play sound.
  • the processor 201 is communicatively connected with the speaker 100, the at least one communication interface 205, and the memory 206 through a communication bus 203.
  • the electronic device 200 may be any of a variety of different types of consumer electronic devices that can be easily held in the hands of the user during normal use, or it may be a non-portable electronic device, specifically, the electronic device 200 It can be an electronic device equipped with a speaker, such as a cell phone, a media player, a smart phone, a smart watch, a tablet computer, a personal digital assistant (PDA), a desktop computer, a TV, and so on.
  • a speaker such as a cell phone, a media player, a smart phone, a smart watch, a tablet computer, a personal digital assistant (PDA), a desktop computer, a TV, and so on.
  • the processor 201 can be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), on-site Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor.
  • the processor 201 is the control center of the electronic device 200 and connects various parts of the entire electronic device 200 through various interfaces and lines.
  • the communication bus 203 may include a path for transferring information between the above-mentioned components.
  • the communication interface 205 is a device that uses any transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), and wireless local area networks (WLAN) Wait.
  • RAN radio access network
  • WLAN wireless local area networks
  • the memory 206 may be used to store computer programs and/or modules.
  • the processor 201 implements various functions of the electronic device 200 by running or executing the computer programs and/or modules stored in the memory 206 and calling data stored in the memory 206.
  • the memory 206 may mainly include a program storage area and a data storage area.
  • the program storage area may store an operating system, application programs required by multiple functions (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data according to Data (such as audio data, phone book, etc.) created by the use of the electronic device 200, etc.
  • the memory 206 may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), and a Secure Digital (SD) Card, Flash Card, multiple disk storage devices, flash memory devices, or other volatile solid-state storage devices.
  • a non-volatile memory such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), and a Secure Digital (SD) Card, Flash Card, multiple disk storage devices, flash memory devices, or other volatile solid-state storage devices.
  • SD Secure Digital
  • the electronic device 200 may include multiple processors 201, such as CPU0 and CPU1 in FIG. 1.
  • processors 201 may be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • the electronic device 200 may further include a camera 207 for capturing images and a display 208 for displaying images. It can be understood that FIG. 1 is only an example of the electronic device 200, and does not constitute a limitation on the electronic device 200.
  • the electronic device 200 may include more or less components than those shown in FIG. 1, or a combination of certain components. , Or different components, for example, the electronic device 200 may also include an input/output device, a network access device, etc., which are not limited herein.
  • the electronic device 200 is a consumer electronic device such as a smart phone.
  • the speaker 100 may be a hands-free phone unit in the electronic device 200.
  • the processor 201 detects a trigger event of the virtual button 209 on the display interface of the electronic device 200, the processor 201 controls the speaker 100 to perform sound Loud speaker to realize hands-free call.
  • FIG. 2 is only an example for the application scenario of the electronic device 200, which is not limited in this application.
  • the speaker 100 performs sound external playback when the electronic device 200 performs multimedia playback.
  • the speaker 100 includes a vibrating unit 110, a first brush portion 130, a housing 150 and a second brush portion 170.
  • the vibrating unit 110 is housed in the housing 150, and the vibrating unit 110 includes a sound emitting surface 1112, a side surface 1113 and a bottom surface 1114.
  • the side surface 1113 is connected between the sound emitting surface 1112 and the bottom surface 1114, and the sound emitting surface 1112 and the bottom surface 1114 are disposed opposite to each other.
  • the first brush portion 130 is fixed on the side surface 1113.
  • the first bristle portion 130 includes a plurality of first bristles 131.
  • the housing 150 has an inner wall 151, and the inner wall 151 is located on a side of the housing 150 close to the vibrating unit 110.
  • the second brush portion 170 is fixed on the inner wall 151 of the housing 150.
  • the second brush portion 170 includes a plurality of second bristles 171.
  • the first bristles 131 and the second bristles 171 are alternately arranged.
  • the adjacent first bristles 131 and the second bristles 171 are in contact with each other, thereby supporting the vibrating unit 110.
  • the first bristles 131 and the second bristles 171 are used to bend and deform by rubbing against each other when the vibrating unit 110 vibrates and produces sound.
  • the thickness direction of the speaker 100 is the stacking direction of the sound emitting surface 1112 and the bottom surface 1114. Because the second bristles 171 and the first bristles 131 are arranged alternately. When the vibrating unit 110 vibrates and produces sound, the second bristles 171 and the first bristles 131 can rub against each other to bend and deform, so that the vibration energy of the vibrating unit 110 is converted into the elastic potential energy of the first bristles 131 and the second bristles 171, thereby reducing The vibration of the speaker 100 also reduces the impact of the vibration of the speaker 100 on peripheral devices.
  • the vibration damping structure It is not provided on the upper and lower surfaces of the vibrating unit 110 in the thickness direction (avoid the sound emitting surface 1112), which is beneficial to reduce the thickness of the speaker 100.
  • the vibrating unit 110 Since the adjacent first bristles 131 and the second bristles 171 are in contact with each other, the vibrating unit 110 is supported by the first brush portion 130 and the second brush portion 170. In this way, the structure of the speaker 100 can be simplified and the speaker 100 can be reduced. The volume and space occupied. In this embodiment, the vibrating unit 110 is suspended on the housing 150. As shown in FIG. 3, the bottom surface 1114 of the vibrating unit 110 and the facing inner wall 151 of the housing 150 are separated by a certain gap to facilitate the arrangement of other components.
  • the vibrating unit 110 may not be suspended, that is, the bottom surface 1114 of the vibrating unit 110 may be in contact with the inner wall 151 or in contact with other elements, that is, the first brush portion 130, the second brush portion 170, and the housing 150 or Other elements jointly support the vibrating unit 110.
  • the materials of the first bristles 131 and the second bristles 171 include silica gel. It can be understood that the material of the first bristles 131 is not limited. For example, it may include but is not limited to silica gel, or the material of the first bristles 131 may also include natural bristles, plastic filaments, nylon filaments, and the like.
  • first bristles 131 and the vibrating unit 110 are not limited.
  • the first bristles 131 and the vibrating unit 110 may be but not limited to be connected by glue.
  • FIG. 4 is a schematic diagram of a first brush portion and a second brush portion provided by an embodiment.
  • the first brush portion 130 further includes a first connecting plate 133, and the first connecting plate 133
  • the plate 133 is fixedly connected to the side surface 1113 of the vibrating unit 110, and the first bristles 131 are fixed on the side of the first connecting plate 133 away from the vibrating unit 110 to facilitate the assembly of the first brush portion 130 to the vibrating unit 110.
  • the first connecting plate 133 and the first bristles 131 may be integrally provided.
  • the first connecting plate 133 may be a flexible plate (such as a rubber plate) that can be bent.
  • the flexible plate has a certain vibration absorption performance and can improve the vibration damping effect.
  • the flexible plate can also be used when the speaker 100 is impacted (such as impact). To achieve a certain buffering effect; or, the first connecting plate 133 may be a rigid plate body.
  • the second brush portion 170 also includes a second connecting plate 173, the second connecting plate 173 is fixed on the inner wall 151 of the housing 150, and the second bristles 171 are fixed on the side of the second connecting plate 173 facing the vibrating unit 110 to facilitate the The two brush parts 170 are assembled on the inner wall 151 of the housing 150. It can be understood that the second connecting plate 173 and the second bristles 171 may be integrally provided.
  • the second connecting plate 173 may be a flexible plate (such as a rubber plate) that can be bent.
  • the flexible plate has a certain vibration absorption performance and can improve the vibration damping effect.
  • the flexible plate can also be used when the speaker 100 is impacted (such as impact). To achieve a certain buffering effect; or, the second connecting plate 173 may be a rigid plate body.
  • the arrangement of the plurality of first bristles 131 on the vibrating unit 110 is not limited.
  • the plurality of first bristles 131 on the vibrating unit 110 may be, but not limited to, arranged in a rectangular matrix or arranged in an uneven density.
  • the angle between the first bristles 131 and the side surface 1113 is not limited.
  • the angle between the first bristles 131 and the inner shell 111 may be, but is not limited to, 60°, 90°, and the like.
  • the contour shape formed by the end of the first bristles 131 away from the vibrating unit 110 is not limited.
  • the contour shape formed by the end of the first bristles 131 away from the vibrating unit 110 may be, but not limited to, a sawtooth shape or a linear shape. Wait.
  • the length of the overlapping portion of the first bristles 131 and the second bristles 171 is not limited.
  • the fixing manner between the second bristles 171 and the inner wall 151 is not limited.
  • the second bristles 171 and the inner wall 151 may be but not limited to a glue connection or the like.
  • the angle between the second bristles 171 and the inner wall 151 is not limited.
  • the angle between the second bristles 171 and the inner wall 151 may be, but is not limited to, 60°, 90°, and the like.
  • the contour shape formed by the end of the second bristles 171 away from the inner wall 151 is not limited.
  • the contour shape formed by the end of the second bristles 171 away from the inner wall 151 may, but is not limited to, a sawtooth shape or a linear shape.
  • the arrangement of the plurality of second bristles 171 on the inner wall 151 is not limited.
  • the plurality of second bristles 171 on the inner wall 151 may be, but not limited to, arranged in a rectangular matrix or arranged in an uneven density.
  • the second bristles 170 can provide support for the first bristles 130; in the second aspect, the first bristles 131 and the second bristles 171 is bent and deformed by vibration, that is, part of the vibration energy of the vibrating unit 110 is transformed into the elastic potential energy of the first bristles 131 and the second bristles 171; in the third aspect, the second bristles 171 and the first bristles 131 can rub against each other, which can reduce the vibration Part of the vibration energy of the single body 110 is converted into internal energy of the second bristles 171 and the first bristles 131 through friction.
  • the housing 150 has a sound output area 180, and the sound output area 180 is arranged corresponding to the sound output surface 1112, and the sound output area 180 is used to output the sound emitted by the vibrating unit 110.
  • the sound output area 180 is a through hole provided on the housing 150. It can be understood that the number of sound output areas 180 is not limited. It can be understood that the sound output area 180 may also be a hollow area provided on the housing 150, and the sound output area 180 may also be a material with better sound conduction performance than other areas of the housing 150.
  • the second brush portion 170 may be omitted, so that the inner wall 151 has a larger roughness, so as to increase the friction between the inner wall 151 and the first brush portion 130 and provide support for the first brush portion 130.
  • the inner wall 151 may be provided with a silicone material or a protrusion may be provided on the inner wall 151, but not limited to.
  • FIG. 5 is a schematic diagram of the structure of the vibration unit part of the speaker shown in FIG. 3.
  • the vibration unit 110 also includes an inner shell 111, a vibration system 113, and a drive system 115.
  • the vibration system 113 and the drive system 115 are fixed to the inner shell 111, and the first brush part 130 is fixed on the outer side of the inner shell 111 away from the vibration system 113. That is, the outer surface of the inner shell 111 is the side surface 1113, and the outer bottom surface of the inner shell 111 is the bottom surface 1114.
  • the first bristles 131 are fixedly connected to the side surface 1113, and the sound emitting surface 1112 is used to output the vibration sound of the vibration system 113.
  • the driving system 115 is used to drive the vibration system 113 to vibrate and produce sound.
  • the speaker 100 is a piezoelectric speaker, which uses the inverse piezoelectric effect of piezoelectric materials to work, that is, the driving system 115 is a piezoelectric system.
  • the driving system 115 includes a piezoelectric element attached to the vibration system 113, and by controlling the voltage applied to the piezoelectric element, the piezoelectric element is deformed to drive the vibration system 113 to vibrate and produce sound.
  • the piezoelectric principle is used to drive the vibration system 113 to vibrate and produce sound. Since there is no need to provide a magnetic circuit, the structure of the vibration unit 110 is simple, which is convenient for production and preparation.
  • the speaker 100 may also be an electrostatic speaker, etc., and the electrostatic speaker operates by using the electrostatic force applied to the electrode plate of the capacitor.
  • the first bristles 131 avoid the sound output direction (ie, the stacking direction on the sound output surface 1112 or the bottom surface 1114) and are arranged on the side surface 1113, which is beneficial to not occupy or occupy less space in the sound output direction, and can effectively reduce the output of the speaker 100.
  • the thickness in the sound direction makes the speaker 100 thinner and easier to carry.
  • first bristles 131 may also be partially disposed on the side of the bottom surface 1114 of the inner shell 111 away from the vibration system 113.
  • the speaker 100 omits the housing 150 and the second brush portion 170
  • the vibration unit 110 can be directly installed in the electronic device 200 or independently
  • the speaker 100 includes the vibration unit 110 and the first brush portion 130
  • the vibration unit 110 includes a sound emitting surface 1112, a side surface 1113, and a bottom surface 1114.
  • the sound emitting surface 1112 and the bottom surface 1114 are disposed opposite to each other.
  • the side surface 1113 is fixedly connected between the sound emitting surface 1112 and the bottom surface 1114, and the first brush portion 130 is fixed to
  • the first bristle portion 130 includes a plurality of first bristles 131, and the first bristles 131 are used to bend and deform when the vibrating unit 110 vibrates and produces sound.
  • FIG. 6 is a schematic diagram of the speaker structure provided by the second embodiment of this application.
  • the speaker 300 includes a support 310, a housing 330 and a vibration unit 350.
  • the support 310 is housed in the housing 330 and is fixedly connected to the vibration unit 350.
  • the support 310 is used to provide support for the vibration unit 350.
  • the support 310 is a flexible support, such as foam or sponge. While providing support for the vibrating unit 350, it can also absorb part of the vibration energy of the vibrating unit 350 to improve the vibration isolation effect of the speaker 300.
  • the number of supports 310 is not limited, and the number of supports 310 may be one or more. It can be understood that the structure and shape of the support 310 are not limited, and the support 310 can provide support for the vibrating unit 350.
  • the support 310 is a rigid support.
  • the speaker 300 also includes a first brush portion 370.
  • the first brush portion 370 has a plurality of first bristles 371.
  • the first bristles 371 are fixedly connected to the side of the vibrating unit 350 close to the housing 330, and the first bristles 371 avoid the support. 310 settings.
  • the speaker 300 also includes a second brush portion 380.
  • the second brush portion 380 has a plurality of second bristles 381.
  • the second bristles 381 are fixedly connected to the side of the housing 330 close to the vibrating unit 350, and the second bristles 381 avoid the support. 310 settings.
  • the first bristles 371 and the second bristles 381 are staggered and partially overlapped.
  • the energy generated by the vibration of the vibrating unit 350 can be absorbed by the support 310, and can also be transformed into elastic potential energy of the first bristles 371 and the second bristles 381 through the vibration and deformation of the first bristles 371 and the second bristles 381.
  • the adjacent first bristles 371 and the second bristles 381 are separated by a certain gap, that is, the vibrating unit 350 is supported by the support 310 when it is not vibrating. It can be understood that there may be no gap between the first bristles 371 and the second bristles 381.
  • the support 310 may also be made of a material that does not have a vibration absorbing effect.
  • the support 310 is not limited to be housed in the housing 330, and it is not limited to the support 310 and the vibrating unit 350 fixedly connected, and the support 310 can be a vibrating unit. 350 can provide support.
  • the speaker 100 further includes a support 310, the vibrating unit 350 is disposed on the support 310, and the bottom surface of the vibrating unit 350 is connected to the support 310.
  • FIG. 7 is a schematic diagram of the structure of the vibration monomer provided by the third embodiment of the application.
  • the vibration unit 530 provided by the third embodiment includes an inner shell 510, a vibration system 531, and a driving system 533.
  • the inner shell 510 includes a first shell 511, a second shell 513 and a third shell 515.
  • the vibration system 531 and the drive system 533 are fixedly housed in the receiving space 517 of the third housing 515, the first housing 511 is fixedly arranged on the third housing 515 and opposite to the vibration system 531, and the second housing 513 is fixed to the cover It is arranged on the third housing 515 and opposite to the driving system 533.
  • the driving system 533 is a magnetic circuit system, and the vibration system is driven by a magnetic field to vibrate and produce sound, which can obtain better sound effects.
  • the driving system is not limited to a piezoelectric system or a magnetic circuit system, and it can also vibrate and produce sound through other driving vibration systems, which is not limited here.

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  • Telephone Set Structure (AREA)

Abstract

本申请提供的一种扬声器及电子设备。扬声器包括振动单体及第一毛刷部，所述振动单体包括出音面、侧面及底面，所述出音面与所述底面相对设置，所述侧面固定连接于所述出音面与所述底面之间，所述第一毛刷部固定于所述侧面上，所述第一毛刷部包括若干第一刷毛，所述第一刷毛用于在所述振动单体振动发声时因自身振动及/或与周边器件发生摩擦而弯曲变形。振动单体振动时，由于振动单体的振动能量至少部分转化为刷毛的弹性势能，进而减少扬声器的振动，亦减少扬声器振动对周边器件的影响。由于第一毛刷部设置于振动单体的侧面，而非设置于振动单体的出音面及底面，有利于减少扬声器的厚度。

Description

扬声器及电子设备
本申请要求在2019年11月13日提交中国国家知识产权局、申请号为201911106650.3发明名称为“扬声器及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及扬声器技术领域，特别涉及一种扬声器及电子设备。
背景技术
随着扬声器功率的加大，扬声器的振动系统对其周边的影响也越来越大，常见的问题有，振动导致的杂音，周边器件的共振导致的性能影响，长期振动导致的零件失效等，因此对扬声器的隔振技术显得尤为重要。
目前通常用减振材料，例如泡棉或橡胶等做成块状，在扬声器厚度方向上粘接到扬声器盆架(Box)上，以在外围零部件与扬声器之间进行振动隔离。然而，减振块设置在扬声器的上下方，无疑增加了总体高度尺寸。
发明内容
本申请实施方式所要解决的技术问题在于提供一种能够减少厚度的扬声器及电子设备。
为了实现上述目的，本申请实施方式采用如下技术方案：
第一方面，本申请实施方式提供一种扬声器，包括振动单体及第一毛刷部，所述振动单体包括出音面、侧面及底面，所述出音面与所述底面相对设置，所述侧面固定连接于所述出音面与所述底面之间，所述第一毛刷部固定于所述侧面上，所述第一毛刷部包括若干第一刷毛，所述第一刷毛用于在所述振动单体振动发声时弯曲变形。
本实施方式中，通过在振动单体的侧面设置包括若干第一刷毛的第一毛刷部，第一刷毛能够因振动单体自身振动及/或与周边器件发生摩擦而弯曲变形。由于振动单体的振动能量至少部分转化为第一刷毛的弹性势能，进而减少扬声器的振动，亦减少扬声器振动对周边器件的影响。由于第一毛刷部设置于振动单体的侧面，而非设置于振动单体的出音面与底面上，有利于减少扬声器的厚度。
在一实施方式中，所述扬声器还包括外壳及第二毛刷部，所述振动单体收容于所述外壳，所述第二毛刷部固定于所述外壳的内壁上，所述第二毛刷部包括若干第二刷毛，所述若干第一刷毛与所述若干第二刷毛相互交错设置，所述若干第一刷毛与所述若干第二刷毛用于在所述振动单体振动发声时相互摩擦而弯曲变形,进一步增强扬声器的减振效果，提高的扬声器的隔振性能。另外，所述若干第一刷毛与所述若干第二刷毛相互交错设置，能够有效防止灰尘进入振动单体。
在一实施方式中，所述扬声器还包括支撑物，所述振动单体设于所述支撑物上，所述 支撑物的底面相接与所述支撑物相接，有利于提高振动单体的稳定性，从而有利于提高扬声器的声音效果。
可以理解，由于所述振动单体设于所述支撑物上，相邻的第一刷毛与第二刷毛之间可以间隔一定空隙(即不接触)，或者，相邻的第一刷毛与第二刷毛之间也可以相互接触，仅需满足振动单体振动时，第一刷毛与第二刷毛能够相互摩擦发生形变即可。
在一实施方式中，所述支撑物为柔性支撑物，例如泡棉或海绵，使支撑物在为振动单体提供支撑力的同时还能吸收部分振动能量，能够提升扬声器的隔振效果。
在一实施方式中，相邻的所述第一刷毛与所述第二刷毛之间相互接触，所述振动单体由所述第一毛刷部与所述第二毛刷部支撑，如此，能够简化扬声器的结构，减少扬声器的体积及占用空间。
在一实施方式中，所述第一刷毛与所述第二刷毛的制成材料包括硅胶。由于硅胶具较佳的耐磨性能，有利于延长第一毛刷部与第二毛刷部的使用寿命。
在一实施方式中，所述振动单体包括内壳、振动系统及驱动系统，所述振动系统与所述驱动系统固定于所述内壳内，所述第一毛刷部固定于所述内壳上，所述驱动系统用于驱动所述振动系统振动发声,所述驱动系统为磁路系统，或者，所述驱动系统为压电系统。
所述驱动系统为磁路系统，通过磁场驱动振动系统振动发声，能够获取较好的声音效果。
所述驱动系统为压电系统，所述驱动系统包括附着在所述振动系统上的压电件，通过控制施加在所述压电件上的电压，使所述压电件变形从而带动所述振动系统振动发声。采用压电原理驱动振动系统振动发声，由于无需设置磁路，振动单体的结构简单，方便生产制备。
在一实施方式中，第一毛刷部还包括第一连接板，所述第一连接板固定在所述振动单体的侧面上，所述第一刷毛固定在所述第一连接板背离所述振动单体的一侧，方便第一毛刷部组装于振动单体。
在一实施方式中，第二毛刷部还包括第二连接板，所述第二连接板固定在所述外壳的内壁上，所述第二刷毛固定在所述第二连接板朝向所述振动单体的一侧，方便第二毛刷部组装于外壳的内壁。
在一实施方式中，所述第一连接板及/或所述第二连接板为柔性板，柔性板具一定的吸振性能，能够提高减振效果，此外，柔性板也可以在扬声器受到冲击(例如撞击)时起到一定的缓冲作用。
第二方面，本申请实施例还提供一种电子设备，包括如上所述的扬声器及处理器，所述处理器用于控制所述振动单体振动发声。
由于扬声器通过振动单体在振动发声时带动第一毛刷部的第一刷毛弯曲变形，有效改善了扬声器振动导致共振带来的杂音、可靠性等问题。由于第一毛刷部设置于振动单体的侧面，而非设置于振动单体的出音面及底面，有利于减少扬声器的厚度，减少扬声器在电子设备中的占用空间。
附图说明
图1为本申请第一实施方式提供的电子设备的结构框图；
图2为图1所示的电子设备的一应用场景示意图；
图3为本申请第一实施方式提供的扬声器结构示意图；
图4为本申请一实施方式提供的第一毛刷部与第二毛刷部的示意图；
图5为图3所示的扬声器的振动单体部分结构示意图；
图6为本申请第二实施方式提供的扬声器结构示意图；
图7为本申请第三实施方式提供的扬声器结构示意图。
具体实施方式
第一实施方式
请参阅图1，图1为本申请第一实施方式提供的电子设备的结构框图。电子设备200包括扬声器100、处理器201、通信总线203、至少一个通信接口205以及存储器206。处理器201用于控制扬声器100播放声音。处理器201与扬声器100、所述至少一个通信接口205、存储器206通过通信总线203通信连接。电子设备200可以是在正常使用过程中可以被轻松地握持在用户手中的多种不同类型的消费性电子设备中的任何一种，亦可以是非便携式的电子设备，具体而言，电子设备200可以为配备有扬声器的电子设备，诸如蜂窝电话、媒体播放器、智能手机、智能手表、平板电脑、个人数字助理(personal digital assistant，PDA)、台式机、电视机等等。
处理器201可以是中央处理单元(Central Processing Unit，CPU)，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等，处理器201是电子设备200的控制中心，利用各种接口和线路连接整个电子设备200的各个部分。通信总线203可包括一通路，在上述组件之间传送信息。
通信接口205，为使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
存储器206可用于存储计算机程序和/或模块，处理器201通过运行或执行存储在存储器206内的计算机程序和/或模块，以及调用存储在存储器206内的数据，实现电子设备200的各种功能。存储器206可主要包括程序存储区和数据存储区，其中，程序存储区可存储操作系统、多个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；数据存储区可存储根据电子设备200的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器206可以包括高速随机存取存储器，还可以包括非易失性存储器，例如硬盘、内存、插接式硬盘，智能存储卡(Smart Media Card,SMC)，安全数字(Secure Digital,SD)卡，闪存卡(Flash Card)、多个磁盘存储器件、闪存器件、或其他易失性固态存储器件。存储器206可以是独立存在，通过通信总线203与处理器201相连接。存储器206也可以和处理器201集成在一起。
在具体实现中，作为一种实施方式，电子设备200可以包括多个处理器201，例如图1中的CPU0和CPU1。这些处理器201中的每一个可以是一个单核(single-CPU)处理器， 也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
电子设备200还可以包括用于捕捉图像的相机207及用于显示图像的显示器208。可以理解的是，所述图1仅是电子设备200的示例，并不构成对电子设备200的限定，电子设备200可以包括比图1所示更多或更少的部件，或者组合某些部件，或者不同的部件，例如电子设备200还可以包括输入输出设备、网络接入设备等，在此不作限定。
在一种应用场景中，请结合参阅图1和图2所示，电子设备200为智能手机之类的消费性电子设备。
扬声器100可以是电子设备200中的免提电话单元。在用户利用电子设备200通过无线通信网络与远端用户端打电话的场景中，当处理器201检测到电子设备200的显示界面的虚拟按键209的触发事件时，处理器201控制扬声器100进行声音外放从而实现免提通话。图2对于电子设备200的应用场景仅是示例性地，本申请对此并不作限定，例如，在其他实施方式中，扬声器100在电子设备200进行多媒体播放时进行声音外放。
请参阅图3，图3为本申请第一实施方式提供的扬声器结构示意图。扬声器100包括振动单体110、第一毛刷部130、外壳150及第二毛刷部170。振动单体110收容于外壳150，振动单体110包括出音面1112、侧面1113及底面1114。侧面1113连接于出音面1112与底面1114之间，出音面1112与底面1114相对设置。第一毛刷部130固定于侧面1113上。第一毛刷部130包括若干第一刷毛131。外壳150具内壁151，内壁151位于外壳150靠近振动单体110的一侧。第二毛刷部170固定于外壳150的内壁151上。第二毛刷部170包括若干第二刷毛171。若干第一刷毛131与若干第二刷毛171相互交错设置。相邻的第一刷毛131与第二刷毛171相互接触，从而支撑振动单体110。第一刷毛131与第二刷毛171用于在振动单体110振动发声时相互摩擦而弯曲变形。
本实施方式中，扬声器100的厚度方向为出音面1112与底面1114的层叠方向。由于第二刷毛171与第一刷毛131相互交错设置。在振动单体110振动发声时，第二刷毛171与第一刷毛131能够相互摩擦而弯曲变形，从而振动单体110的振动能量转化为第一刷毛131与第二刷毛171的弹性势能，进而减少扬声器100的振动，亦减少扬声器100振动对周边器件的影响。
由于在振动单体110的侧面1113设置包括若干第一刷毛131的第一毛刷部130，以及外壳150的内壁151上设置包括若干第二刷毛171的第二毛刷部170，即减振结构并非设置于振动单体110厚度方向的上下表面(避开出音面1112设置)，有利于减少扬声器100的厚度。
由于相邻的第一刷毛131与第二刷毛171之间相互接触，振动单体110由第一毛刷部130与第二毛刷部170支撑，如此，能够简化扬声器100的结构，减少扬声器100的体积及占用空间。本实施方式中，振动单体110悬空设置于外壳150，如图3所示，振动单体110的底面1114与朝向的外壳150的内壁151间隔一定空隙，以方便其他的元件的排布。
可以理解，振动单体110亦可以不为悬空设置，即振动单体110的底面1114可以与内壁151接触或者其他元件接触，即第一毛刷部130、第二毛刷部170与外壳150或其他元件共同支撑振动单体110。
在本实施方式中，第一刷毛131与第二刷毛171的制成材料包括硅胶。可以理解，不限制第一刷毛131的制成材料，例如，可以但不限于包括硅胶，或者，第一刷毛131的制成材料还可以包括天然猪鬃、塑料丝、尼龙丝等。
可以理解，不限制第一刷毛131与振动单体110的固定连接方式，例如，第一刷毛131与振动单体110之间可以但不限于采用胶合的方式连接。
在一实施方式中，请参阅图4，图4为一实施方式提供的第一毛刷部与第二毛刷部的示意图，第一毛刷部130还包括第一连接板133，第一连接板133固定连接振动单体110的侧面1113，第一刷毛131固定在第一连接板133背离振动单体110的一侧，方便第一毛刷部130组装于振动单体110。可以理解，第一连接板133与第一刷毛131可以一体设置。
第一连接板133可以为能够弯折的柔性板(例如橡胶板)，柔性板具一定的吸振性能，能够提高减振效果，此外，柔性板也可以在扬声器100受到冲击(例如撞击)时起到一定的缓冲作用；或者，第一连接板133可以为硬质的板体。
第二毛刷部170还包括第二连接板173，第二连接板173固定在外壳150的内壁151上，第二刷毛171固定在第二连接板173朝向振动单体110的一侧，方便第二毛刷部170组装于外壳150的内壁151。可以理解，第二连接板173与第二刷毛171可以一体设置。
第二连接板173可以为能够弯折的柔性板(例如橡胶板)，柔性板具一定的吸振性能，能够提高减振效果，此外，柔性板也可以在扬声器100受到冲击(例如撞击)时起到一定的缓冲作用；或者，第二连接板173可以为硬质的板体。
可以理解，不限制若干第一刷毛131在振动单体110上的排列方式，例如，若干第一刷毛131在振动单体110上可以但不限于呈矩形矩阵排布或者密度不均匀的排布。
可以理解，不限制第一刷毛131与侧面1113之间的角度，例如，第一刷毛131与内壳111之间的角度可以但不限于为60°、90°等。
可以理解，不限制第一刷毛131背离振动单体110的端部形成的轮廓形状，例如，第一刷毛131背离振动单体110的端部形成的轮廓形状可以但不限于为锯齿状或者直线状等。
可以理解，不限制第一刷毛131与第二刷毛171重叠部分的长度。
可以理解，不限制第二刷毛171与内壁151之间的固定方式，例如，第二刷毛171与内壁151之间可以但不限于采用胶合连接等。
可以理解，不限制第二刷毛171与内壁151之间的角度，例如，第二刷毛171与内壁151之间的角度可以但不限于为60°、90°等。
可以理解，不限制第二刷毛171背离内壁151的端部形成的轮廓形状，例如，第二刷毛171背离内壁151的端部形成的轮廓形状可以但不限于为锯齿状或者直线状等。
可以理解，不限制若干第二刷毛171在内壁151上的排列方式，例如，若干第二刷毛171在内壁151上可以但不限于为呈矩形矩阵排布或者为密度不均匀的排布。
在本实施方式中，由于第二刷毛171与第一刷毛131接触，一方面，第二毛刷部170可以为第一毛刷部130提供支撑；第二方面，第一刷毛131与第二刷毛171通过振动弯曲变形，即振动单体110的部分振动能量转变为第一刷毛131与第二刷毛171的弹性势能；第三方面，第二刷毛171和第一刷毛131能够相互摩擦，可以将振动单体110的部分振动能量通过摩擦转化为第二刷毛171及第一刷毛131的内能。
请再次参阅图3，外壳150具出音区域180，出音区域180与出音面1112对应设置，出音区域180用于输出振动单体110发出的声音。在本实施方式中，出音区域180为外壳150上设置的通孔。可以理解，不限制出音区域180的数量。可以理解，出音区域180也可以为设置于外壳150上的镂空区域，出音区域180也可以为导音性能优于外壳150其他区域的材料等。
可以理解，第二毛刷部170可以省略，使内壁151具较大的粗糙度，以增大内壁151与第一毛刷部130的摩擦，为第一毛刷部130提供支撑。例如，可以但不限于在内壁151装设硅胶材料或者在内壁151设置突起等。
请参阅图5，图5为图3所示的扬声器的振动单体部分结构示意图。振动单体110还包括内壳111、振动系统113及驱动系统115，振动系统113与驱动系统115固定于内壳111，第一毛刷部130固定于内壳111背离振动系统113的外侧面，即内壳111的外侧面为侧面1113，内壳111的外底面为底面1114。第一刷毛131固定连接于侧面1113上，出音面1112用于输出振动系统113的振动发声。
驱动系统115用于驱动振动系统113振动发声。本实施方式中，扬声器100为压电扬声器，其利用压电材料的逆压电效应而工作，即驱动系统115为压电系统。驱动系统115包括附着在振动系统113上的压电件，通过控制施加在所述压电件上的电压，使所述压电件变形从而带动所述振动系统113振动发声。采用压电原理驱动振动系统113振动发声，由于无需设置磁路，振动单体110的结构简单，方便生产制备。
本申请对扬声器100的类别及结构不作限定，例如，扬声器100还可以为静电扬声器等，静电扬声器利用加到电容器极板上的静电力而工作。
第一刷毛131避开出音方向(即出音面1112上或底面1114的层叠方向)而设置于侧面1113，有利于不占用或占用较少出音方向上的空间，能够有效降低扬声器100出音方向上的厚度，使扬声器100更轻薄、容易携带。
可以理解，第一刷毛131也可以部分设置于内壳111的底面1114背离振动系统113的一侧。
在一实施方式中，扬声器100省略外壳150及第二毛刷部170，振动单体110可以直接装设于电子设备200内或者独立设置，扬声器100包括振动单体110及第一毛刷部130，振动单体110包括出音面1112、侧面1113及底面1114，出音面1112与底面1114相对设置，侧面1113固定连接于出音面1112与底面1114之间，第一毛刷部130固定于侧面1113上，第一毛刷部130包括若干第一刷毛131，第一刷毛131用于在振动单体110振动发声时弯曲变形。
第二实施方式
请参阅图6，图6为本申请第二实施方式提供的扬声器结构示意图。
扬声器300包括支撑物310、外壳330及振动单体350，支撑物310收容于外壳330内并与振动单体350固定相接，支撑物310用于为振动单体350提供支撑。
在本实施方式中，支撑物310为柔性支撑物，例如泡棉或海绵。在为振动单体350提供支撑的同时，还可以吸收振动单体350的部分振动能量，提升扬声器300的隔振效果。
可以理解，不限制支撑物310的数量，支撑物310的数量可以为一个或多个。可以理解，不限制支撑物310的结构与形状，支撑物310能够为振动单体350提供支撑即可，例如支撑物310为刚性支撑物。
扬声器300还包括第一毛刷部370，第一毛刷部370具若干第一刷毛371，第一刷毛371固定连接于振动单体350靠近外壳330的一侧，第一刷毛371避开支撑物310设置。
扬声器300还包括第二毛刷部380，第二毛刷部380具若干第二刷毛381，第二刷毛381固定连接于外壳330靠近振动单体350的一侧，第二刷毛381避开支撑物310设置。
第一刷毛371和第二刷毛381交错设置并部分重叠。振动单体350振动产生的能量，可以被支撑物310吸收，也可以经第一刷毛371和第二刷毛381振动发生形变而转化为第一刷毛371和第二刷毛381的弹性势能。
本实施方式中，相邻的第一刷毛371和第二刷毛381之间间隔一定空隙，即振动单体350在未振动时由支撑物310支撑。可以理解，第一刷毛371和第二刷毛381之间可以不存在间隙。
可以理解，支撑物310也可以为不具有吸振效果的材料制成，不限定支撑物310收容于外壳330，不限定支撑物310与振动单体350固定相接，支撑物310能够为振动单体350提供支撑即可。在一实施方式中，扬声器100还包括支撑物310，振动单体350设于支撑物310上，振动单体350的底面与支撑物310相接。
第三实施方式
请结合参阅图7，图7为本申请第三实施方式提供的振动单体的结构示意图。
第三实施方式提供的振动单体530包括内壳510、振动系统531及驱动系统533。内壳510包括第一壳体511、第二壳体513及第三壳体515。振动系统531与驱动系统533固定收容于第三壳体515的收容空间517，第一壳体511固定盖设于第三壳体515上并与振动系统531相对设置，第二壳体513固定盖设于第三壳体515上并与驱动系统533相对设置。本实施方式中，驱动系统533为磁路系统，通过磁场驱动振动系统振动发声，能够获取较好的声音效果。
综上，不限定驱动系统为压电系统或磁路系统，其也可以通过其他驱动振动系统振动发声，在此不作限定。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (10)

  1. 一种扬声器，其特征在于，包括振动单体及第一毛刷部，所述振动单体包括出音面、侧面及底面，所述出音面与所述底面相对设置，所述侧面固定连接于所述出音面与所述底面之间，所述第一毛刷部固定于所述侧面上，所述第一毛刷部包括若干第一刷毛，所述第一刷毛用于在所述振动单体振动发声时弯曲变形。
  2. 根据权利要求1所述的扬声器，其特征在于，所述扬声器还包括外壳及第二毛刷部，所述振动单体收容于所述外壳，所述第二毛刷部固定于所述外壳的内壁上，所述第二毛刷部包括若干第二刷毛，所述若干第一刷毛与所述若干第二刷毛相互交错设置，所述若干第一刷毛与所述若干第二刷毛用于在所述振动单体振动发声时相互摩擦而弯曲变形。
  3. 根据权利要求2所述的扬声器，其特征在于，所述扬声器还包括支撑物，所述振动单体设于所述支撑物上，所述振动单体的底面与所述支撑物相接。
  4. 根据权利要求3所述的扬声器，其特征在于，所述支撑物为柔性支撑物。
  5. 根据权利要求2所述的扬声器，其特征在于，相邻的所述第一刷毛与所述第二刷毛之间相互接触，所述振动单体由所述第一毛刷部与所述第二毛刷部支撑。
  6. 根据权利要求2所述的扬声器，其特征在于，所述第一毛刷部还包括第一连接板，所述第一连接板固定在所述振动单体的侧面上，所述第一刷毛固定在所述第一连接板背离所述振动单体的一侧。
  7. 根据权利要求6所述的扬声器，其特征在于，所述第二毛刷部还包括第二连接板，所述第二连接板固定在所述外壳的内壁上，所述第二刷毛固定在所述第二连接板朝向所述振动单体的一侧。
  8. 根据权利要求7所述的扬声器，其特征在于，所述第一连接板及/或所述第二连接板为柔性板。
  9. 根据权利要求1-8任意一项所述的扬声器，其特征在于，所述振动单体包括内壳、振动系统及驱动系统，所述振动系统与所述驱动系统固定于所述内壳内，所述第一毛刷部固定于所述内壳背离所述振动系统的外侧面上，所述驱动系统用于驱动所述振动系统振动发声，所述驱动系统为磁路系统，或者，所述驱动系统为压电系统。
  10. 一种电子设备，其特征在于，包括处理器及根据权利要求1-9任意一项所述的扬声器，所述处理器用于控制所述振动单体振动发声。
PCT/CN2020/126013 2019-11-13 2020-11-03 扬声器及电子设备 WO2021093628A1 (zh)

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