WO2020228492A1 - 扬声器及终端设备 - Google Patents

扬声器及终端设备 Download PDF

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Publication number
WO2020228492A1
WO2020228492A1 PCT/CN2020/085671 CN2020085671W WO2020228492A1 WO 2020228492 A1 WO2020228492 A1 WO 2020228492A1 CN 2020085671 W CN2020085671 W CN 2020085671W WO 2020228492 A1 WO2020228492 A1 WO 2020228492A1
Authority
WO
WIPO (PCT)
Prior art keywords
speaker
cavity
groove
housing
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/085671
Other languages
English (en)
French (fr)
Inventor
蒋国珠
龙立锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vivo Mobile Communication Co Ltd
Original Assignee
Vivo Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to KR1020217038645A priority Critical patent/KR102674544B1/ko
Priority to EP20805394.2A priority patent/EP3972285A4/en
Publication of WO2020228492A1 publication Critical patent/WO2020228492A1/zh
Priority to US17/525,928 priority patent/US11930345B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/18—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/022—Aspects regarding the stray flux internal or external to the magnetic circuit, e.g. shielding, shape of magnetic circuit, flux compensation coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • the present disclosure relates to the technical field of communication equipment, and in particular to a speaker and terminal equipment.
  • the current terminal equipment has higher and higher requirements for appearance design. More and more speakers have sound holes arranged on the side of the terminal equipment, and a sound guide channel is needed to connect the front cavity of the speaker with the sound hole. This structure is likely to cause front cavity resonance of the speaker, making the speaker at 3.5kHZ
  • the frequency band of -6kHZ forms a higher high frequency resonance peak. This frequency band belongs to the sensitive area of the human ear, and the high-frequency resonance peak produces a harsher sense of hearing, which will affect the user experience.
  • the length of the sound pipe is usually extended to form a secondary resonance to disperse the high-frequency resonance peak energy of the front cavity.
  • a longer sound channel will occupy a larger space, which will affect the battery setting in the terminal device.
  • the present disclosure discloses a speaker and a terminal device, so as to solve the problem that the speaker of the current terminal device cannot suppress the resonance peak during operation, which results in a poor user experience.
  • a speaker includes a speaker shell and a speaker body, the speaker body is connected to the speaker shell, the speaker body and the speaker shell form a cavity, and the cavity includes a first cavity and a second cavity, The first inner cavity is communicated with the second inner cavity through a connecting hole.
  • the speaker body and the speaker housing form the first inner cavity, and the speaker housing has the second inner cavity.
  • the first inner cavity includes a first sub-cavity and a sound outlet channel
  • the sound outlet channel communicates with the first sub-cavity
  • the first sub-cavity communicates with the first sub-cavity through the connecting hole.
  • the second inner cavity is in communication.
  • the speaker housing includes a first housing and a second housing detachably connected to the first housing, and the speaker main body is disposed between the first housing and the first housing.
  • the first sub-cavity is formed between the two housings and between the speaker body and the second housing, and the second housing is provided with the sound channel.
  • the second housing includes a shell body, a supporting sheet and a sealing sheet, the supporting sheet is disposed on the shell body, and the supporting sheet has a first recessed toward the speaker body.
  • a groove, the sealing sheet covers the notch of the first groove, and forms the second inner cavity with the first groove, and the inner wall of the first groove is provided with the connecting hole .
  • the housing body is provided with a first mounting hole
  • the supporting piece is arranged in the first mounting hole
  • the surface of the supporting piece where the notch of the first groove is located It is coplanar with the outer surface of the shell body.
  • the surface where the notch of the first groove on the supporting sheet is located is coplanar with the outer surface of the sealing sheet.
  • a support platform is provided in the first groove, and the sealing sheet is pasted on the support platform.
  • the supporting sheet is a supporting steel sheet.
  • the speaker body includes a diaphragm and a dome
  • the dome has a second groove that matches the concave shape of the first groove, and the dome and the vibration Film phase fit.
  • the speaker body includes an inner magnet and a magnetic sheet arranged on the inner magnet, and the magnetic sheet is arranged on a side of the inner magnet facing the diaphragm, and A third groove is opened in the area of the magnetic conductive sheet opposite to the second groove.
  • the support sheet is provided with a second mounting hole, the second mounting hole is mounted with a pipe fitting, and the pipe fitting communicates with the first sub-cavity and the second inner cavity.
  • the supporting sheet is fixed with a fixing bolt
  • the fixing bolt has a threaded hole opposite to the second mounting hole
  • the outer wall of the pipe has a thread
  • the pipe passes through the second mounting hole.
  • the mounting hole penetrates the support piece and is threadedly connected with the threaded hole.
  • the second mounting hole is opened in the center of the bottom wall of the first groove facing the notch.
  • the first inner cavity includes a first sub-cavity and a sound outlet channel, the sound outlet channel communicates with the first sub-cavity, and the sound outlet channel communicates with the sound outlet through the connecting hole.
  • the second inner cavity is connected.
  • the speaker body has the second inner cavity.
  • a terminal device includes the above-mentioned speaker.
  • the speaker body is connected to the speaker housing to form a cavity.
  • the cavity includes a first cavity and a second cavity.
  • the second cavity communicates with the first cavity through a connecting hole, so that the The first cavity and the second cavity form a parallel resonant structure.
  • a trap can be formed to suppress the high-frequency resonance peak, thereby avoiding Suppress the resonance peak to produce a harsher sense of hearing, thereby improving the user experience.
  • the improvement of the speaker disclosed in the embodiment of the present disclosure to the speaker in the related art does not affect the rear cavity of the speaker, and thus does not affect the low frequency performance of the speaker.
  • FIG. 1 is a schematic diagram of an exploded structure of a speaker disclosed in an embodiment of the disclosure
  • FIG. 2 is a cross-sectional view of the speaker disclosed in an embodiment of the disclosure.
  • FIG. 3 is a schematic diagram of a three-dimensional structure of a speaker disclosed in an embodiment of the disclosure.
  • 200-speaker body 210-diaphragm, 220-dome, 221-second groove, 230-inner magnet, 240-permeable sheet, 241-third groove, 250-outer magnet, 260-energized coil,
  • A-first sub-cavity, B-second inner cavity A-first sub-cavity, B-second inner cavity.
  • the embodiments of the present disclosure disclose a speaker, and the disclosed speaker can be applied to a terminal device.
  • the speaker disclosed in the embodiment of the present disclosure includes a speaker housing 100 and a speaker body 200.
  • the speaker main body 200 is a main body member of the speaker, and the speaker housing 100 can provide an installation position for the speaker main body 200.
  • the speaker body 200 is connected to the speaker housing 100, and the speaker body 200 and the speaker housing 100 form a cavity of the speaker.
  • the cavity includes a first cavity and a second cavity B. Specifically, the first inner cavity and the second inner cavity B are communicated through a connecting hole.
  • the speaker body 200 and the speaker housing 100 form a cavity.
  • the cavity includes a first cavity and a second cavity B.
  • the second cavity B communicates with the first cavity through a connecting hole.
  • the first cavity and the second cavity B form a parallel resonant structure.
  • the improvement of the speaker disclosed in the embodiments of the present disclosure to the speaker in the related art does not affect the rear cavity of the speaker, and thus does not affect the audio performance of the speaker.
  • the volume of the second inner cavity B may be smaller than the volume of the first inner cavity.
  • the speaker body 200 and the speaker housing 100 may form a first cavity, and the speaker housing 100 may have a second cavity B.
  • the second inner cavity B is not limited to being provided on the speaker housing 100.
  • the speaker body 200 may have the second inner cavity B.
  • the first cavity may include a first subcavity A and a sound output channel 121.
  • the sound output channel 121 communicates with the first subcavity A.
  • the first subcavity A may be considered as the front cavity of the speaker.
  • the speaker body 200 pushes the air in the first sub-cavity A to vibrate to generate sound, and the generated sound can be emitted from the sound channel 121 to the outside of the terminal device, and finally the speaker can produce sound.
  • the first cavity and the second cavity B can be communicated through the connecting hole.
  • the speaker body 200 and the speaker housing 100 form a first cavity, and the first cavity includes a first subcavity A and a sound output.
  • the second inner cavity B may communicate with the first sub-cavity A through the connecting hole, thereby realizing communication with the first inner cavity. It may also be that the second inner cavity B may communicate with the sound outlet channel 121 through the connecting hole, thereby achieving communication with the first inner cavity.
  • the embodiments of the present disclosure do not limit the specific manner in which the first cavity and the second cavity are connected through the connecting hole.
  • the speaker housing 100 may include a first housing 110 and a second housing 120, and the first housing 110 and the second housing 120 are connected. Specifically, the first housing 110 and the second housing 120 are detachably and fixedly connected.
  • the speaker main body 200 may be arranged between the first housing 110 and the second housing 120, between the first housing 110 and the second housing 120. The connection between the bodies 120 can realize the fixation of the speaker body 200, and further realize the installation of the speaker body 200 on the speaker housing 100.
  • the speaker body 200 is connected to the second housing 120 to form a first sub-cavity A.
  • the speaker housing 100 has a sound outlet channel 121 that communicates with the first sub-cavity A.
  • the speaker body 200 and the second housing 120 After being connected, the second housing 120 and the speaker body 200 form a first inner cavity.
  • the speaker housing 100 has a second inner cavity B, which is easier to form the second inner cavity B.
  • the second housing 120 may include a housing body 122, a supporting piece 123 and a sealing piece 124.
  • the supporting piece 123 may be disposed on the housing body 122, and the supporting piece 123, the housing body 122, and the speaker body 200 may form the first subcavity A.
  • the supporting sheet 123 may have a first groove 1231 recessed toward the speaker body 200, and the sealing sheet 124 covers the notch of the first groove 1231, so that the sealing sheet 124 and the first groove 1231 A second inner cavity B is formed.
  • the inner wall of the first groove 1231 may be provided with a connecting hole, and the connecting hole connects the first sub-cavity A and the second inner cavity B.
  • the second housing 120 may have a sound outlet channel 121.
  • the sound outlet channel 121 may be formed by butting the first housing 110 and the second housing 120, or may be opened on the first housing 110. It can be opened on the second housing 120. As shown in FIG. 2, the second housing 120 is provided with a sound outlet channel 121.
  • the shell body 122 may be provided with a first mounting hole 1221, the supporting piece 123 is arranged in the first mounting hole 1221, and the supporting piece 123 The first groove 1231 is recessed from the first mounting hole 1221 to the side where the speaker body 200 is located.
  • the supporting piece 123 is at least partially embedded in the first mounting hole 1221 of the housing body 122, thereby reducing the amount of The stack height of the person.
  • the surface where the notch of the first groove 1231 on the support piece 123 is located and the outer surface of the shell body 122 may be coplanar, thereby facilitating the realization that part of the surface of the support piece 123 is coplanar with the outer surface of the shell body 122. It is helpful to improve the appearance performance of the speaker.
  • the outer surface of the shell body 122 can form a part of the appearance surface of the speaker.
  • the surface where the notch of the first groove 1231 is located can also form a part of the appearance surface of the speaker.
  • the surface where the notch of the first groove 1231 on the supporting piece 123 is located may be coplanar with the outer surface of the sealing piece 124, so that the supporting piece 123 and the sealing piece 124 can be installed in place with the housing.
  • the outer surfaces of the body 122 are coplanar, which undoubtedly can further improve the appearance performance and reduce the assembly thickness.
  • a supporting table 1232 may be provided in the first groove 1231, and the sealing sheet 124 may be attached to the supporting table 1232. Specifically, the sealing sheet 124 may be pasted on the supporting platform 1232.
  • the support sheet 123 may be a support steel sheet, and the support sheet 123 has good strength and good deformability.
  • the supporting sheet 123 may also be a plastic sheet or the like, and the specific material of the supporting sheet 123 is not limited in the embodiment of the present disclosure.
  • the speaker body 200 may include a diaphragm 210 and a dome 220.
  • the diaphragm 210 will vibrate.
  • the dome 220 is attached to the diaphragm 210, and the dome 220 The density of is greater than the density of the diaphragm 210, thereby making the inertia of the dome 220 larger.
  • the dome 220 can increase the inertia during the vibration of the diaphragm 210, thereby enhancing the vibration effect of the diaphragm 210.
  • the dome 220 has a second groove 221 that matches the concave shape of the first groove 1231, and the diaphragm 210 is attached to the dome 220, and the diaphragm
  • the whole formed by 210 and the dome 220 can better avoid the first groove 1231 of the support piece 123, so that the influence of the first groove 1231 on the overall vibration range of the diaphragm 210 and the dome 220 can be alleviated.
  • the dome 220 has a second groove 221.
  • the second groove 221 can strengthen the rigidity of the dome 220, thereby reducing the split vibration of the speaker in the high frequency range, thereby expanding the frequency bandwidth of the speaker. Obviously, this can further improve the performance and sense of hearing of the speaker.
  • the speaker body 200 includes an inner magnet 230, an outer magnet 250, and an energizing coil 260.
  • the inner magnet 230 and the outer magnet 250 form a magnetic field.
  • the energizing coil 260 is disposed in the gap between the inner magnet 230 and the outer magnet 250.
  • the energization coil 260 is connected to the diaphragm 210. When the energized coil 260 is in the energized state, it will be driven by the force of the magnetic field to drive the diaphragm 210 to vibrate, thereby driving the air in the first sub-cavity A to vibrate, and finally produce sound.
  • the surface of the inner magnet 230 facing the diaphragm 210 may be provided with a magnetic conductive sheet 240.
  • the magnetic conductive sheet 240 is made of a magnetic conductive material.
  • the magnetic conductive sheet 240 plays a role of magnetic conductive.
  • the inner magnet 230 and the outer magnet 250 exert a greater magnetic force on the energized coil 260.
  • the magnetic conductive sheet 240 may be an iron gasket.
  • the depression direction of the second groove 221 of the dome 220 is consistent with the depression direction of the first groove 1231, the depression direction of the second groove 221 faces the inner magnet 230.
  • the magnetic conductive sheet 240 is disposed on the side of the inner magnet 230 facing the diaphragm 210, and the area of the magnetic conductive sheet 240 opposite to the second groove 221 may be provided with a third groove 241.
  • the third groove 241 can better avoid the vibration of the diaphragm 210 and the dome 220, especially the dome 220 with the second groove 221.
  • a third groove 241 is provided on the magnetic conductive sheet 240.
  • the third groove 241 is usually located in the magnetic flux sparse area of the magnetic conductive sheet 240. Therefore, the third groove 241 is provided on the magnetic conductive sheet 240 to conduct the magnetic conductive sheet 240. The magnetic performance is less affected.
  • the inner wall of the first groove 1231 is provided with a connecting hole.
  • the connecting hole realizes the communication between the first subcavity A and the second cavity B, so that the first cavity and the second cavity B form a parallel resonance structure.
  • the supporting piece 123 may be provided with a second mounting hole, and the second mounting hole may be equipped with a pipe 130, which is used to communicate the first sub-cavity A and the second inner cavity B, that is, the pipe
  • the central hole of 130 is the connecting hole described above.
  • those skilled in the art can reasonably design the length, diameter and other parameters of the tube 130, so that the resonance frequency can be adjusted more accurately, so that the resonance frequency of the parallel resonance structure is close to the resonance frequency of the speaker front cavity.
  • the resonance peak can be suppressed more accurately.
  • the resonance peak can be better suppressed.
  • the pipe 130 can be installed in the second mounting hole in various ways.
  • the pipe 130 can be installed in the second mounting hole by bonding, welding, or the like.
  • the supporting piece 123 may be fixed with a fixing bolt 140, and the fixing bolt 140 has a threaded hole opposite to the second mounting hole.
  • the outer wall of the pipe 130 has threads.
  • the pipe 130 may penetrate the supporting piece 123 through the second mounting hole and be screwed with the threaded hole.
  • the operator can screw the tube 130 to adjust the length of the tube 130 in the first subcavity A and the second inner cavity B, so that the first subcavity A and the second cavity can be adjusted more finely.
  • the parallel resonant structure formed by the cavity B is
  • the second mounting hole may be opened in the center of the bottom wall of the first groove 1231 facing the notch, thereby helping to improve the balance of vibration.
  • the embodiments of the present disclosure disclose a terminal device, and the disclosed terminal device includes the speaker described in the above embodiment.
  • the terminal devices disclosed in the embodiments of the present disclosure may be terminal devices such as mobile phones, tablet computers, e-book readers, game consoles, wearable devices (such as smart watches), etc.
  • the embodiments of the present disclosure do not limit the specific types of terminal devices.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本公开提供一种扬声器，其包括扬声器外壳和扬声器主体，扬声器主体与扬声器外壳相连，扬声器主体与扬声器外壳形成空腔，空腔包括第一内腔和第二内腔，第一内腔与第二内腔通过连接孔连通。

Description

扬声器及终端设备
相关申请的交叉引用
本申请主张在2019年5月15日在中国提交的中国专利申请号No.201910402731.1的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通讯设备技术领域，尤其涉及一种扬声器及终端设备。
背景技术
随着用户需求的提升，终端设备的性能持续在优化。目前的终端设备对外观设计的要求越来越高。越来越多的扬声器的出音孔设置在终端设备的侧面，进而需要一段导音通道连通扬声器的前腔与出音孔，此种结构较容易导致扬声器发生前腔共振，使得扬声器在3.5kHZ-6kHZ的频段形成较高的高频谐振峰。此频段属于人耳比较敏感的区域，高频谐振峰会产生较为刺耳的听感，进而会影响用户的使用体验。
目前行业内通常采用延长出音管道的长度，以形成二次谐振来分散前腔的高频谐振峰能量。但是较长的出音管道会占据较大的空间，进而影响终端设备内电池的设置。
发明内容
本公开公开一种扬声器及终端设备，以解决目前的终端设备的扬声器工作时无法抑制谐振峰，从而导致用户的使用体验较差的问题。
为了解决上述问题，本公开采用下述技术方案：
一种扬声器，包括扬声器外壳和扬声器主体，所述扬声器主体与所述扬声器外壳相连，所述扬声器主体与所述扬声器外壳形成空腔，所述空腔包括第一内腔和第二内腔，所述第一内腔与所述第二内腔通过连接孔连通。
可选的，上述扬声器中，所述扬声器主体与所述扬声器外壳形成所述第一内腔，所述扬声器外壳具有所述第二内腔。
可选的，上述扬声器中，所述第一内腔包括第一子腔和出音通道，所述出音通道与所述第一子腔连通，所述第一子腔通过所述连接孔与所述第二内腔连通。
可选的，上述扬声器中，所述扬声器外壳包括第一壳体和与所述第一壳体可拆卸相连的第二壳体，所述扬声器主体设置在所述第一壳体与所述第二壳体之间，且所述扬声器主体与所述第二壳体之间形成所述第一子腔，所述第二壳体设置有所述出音通道。
可选的，上述扬声器中，所述第二壳体包括壳本体、支撑片和密封片，所述支撑片设置在所述壳本体上，所述支撑片具有朝向所述扬声器主体凹陷的第一凹槽，所述密封片封盖在所述第一凹槽的槽口，且与所述第一凹槽形成所述第二内腔，所述第一凹槽的内壁开设有所述连接孔。
可选的，上述扬声器中，所述壳本体开设有第一安装孔，所述支撑片设置在所述第一安装孔中，所述支撑片上的所述第一凹槽的槽口所在的表面与所述壳本体的外侧表面共面。
可选的，上述扬声器中，所述支撑片上的所述第一凹槽的槽口所在的表面与所述密封片的外侧表面共面。
可选的，上述扬声器中，所述第一凹槽内设置有支撑台，所述密封片粘贴在支撑台上。
可选的，上述扬声器中，所述支撑片为支撑钢片。
可选的，上述扬声器中，所述扬声器主体包括振膜和球顶，所述球顶具有与所述第一凹槽的凹陷形状相匹配的第二凹槽，所述球顶与所述振膜相贴合。
可选的，上述扬声器中，所述扬声器主体包括内侧磁体和设置在所述内侧磁体上的导磁片，所述导磁片设置在所述内侧磁体朝向所述振膜的一侧，所述导磁片与所述第二凹槽相对的区域开设有第三凹槽。
可选的，上述扬声器中，所述支撑片开设有第二安装孔，所述第二安装孔安装有管件，所述管件连通所述第一子腔和所述第二内腔。
可选的，上述扬声器中，所述支撑片固定有固定栓，所述固定栓具有与所述第二安装孔相对的螺纹孔，所述管件的外壁具有螺纹，所述管件通过所 述第二安装孔贯穿所述支撑片、且与所述螺纹孔螺纹连接。
可选的，上述扬声器中，所述第二安装孔开设在所述第一凹槽朝向其槽口的底壁的中心。
可选的，上述扬声器中，所述第一内腔包括第一子腔和出音通道，所述出音通道与所述第一子腔连通，所述出音通道通过所述连接孔与所述第二内腔连通。
可选的，上述扬声器中，所述扬声器主体具有所述第二内腔。
一种终端设备，包括上文所述的扬声器。
本公开采用的技术方案能够达到以下有益效果：
本公开实施例公开的扬声器中，扬声器主体与扬声器外壳相连进而形成空腔，空腔包括第一内腔和第二内腔，第二内腔通过连接孔与第一内腔连通，进而使得第一内腔与第二内腔形成并联谐振结构，在并联谐振结构的谐振频率接近于扬声器的前腔共振频率时，即可形成陷波来实现对高频谐振峰的抑制，从而能够避免由于无法抑制谐振峰而产生较为刺耳的听感，进而能够提升用户的使用体验。
与此同时，本公开实施例公开的扬声器对相关技术中的扬声器的改进，并没有影响扬声器后腔，也就不会影响扬声器的低频性能。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本公开的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为本公开实施例公开的扬声器的爆炸结构示意图；
图2为本公开实施例公开的扬声器的剖视图；
图3为本公开实施例公开的扬声器的立体结构示意图。
附图标记说明：
100-扬声器外壳、110-第一壳体、120-第二壳体、121-出音通道、122-壳本体、1221-第一安装孔、123-支撑片、1231-第一凹槽、1232-支撑台、124-密封片、130-管件、140-固定栓、
200-扬声器主体、210-振膜、220-球顶、221-第二凹槽、230-内侧磁体、240-导磁片、241-第三凹槽、250-外侧磁体、260-通电线圈、
A-第一子腔、B-第二内腔。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合本公开具体实施例及相应的附图对本公开技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
以下结合附图，详细说明本公开各个实施例公开的技术方案。
请参考图1-图3，本公开实施例公开一种扬声器，所公开的扬声器可以应用于终端设备中。本公开实施例公开的扬声器包括扬声器外壳100和扬声器主体200。
扬声器主体200为扬声器的主体构件，扬声器外壳100能够为扬声器主体200提供安装位置。在本公开实施例中，扬声器主体200与扬声器外壳100相连，扬声器主体200与扬声器外壳100形成扬声器的空腔。该空腔包括第一内腔和第二内腔B。具体的，第一内腔与第二内腔B通过连接孔连通。
本公开实施例公开的扬声器中，扬声器主体200与扬声器外壳100形成空腔，该空腔包括第一内腔和第二内腔B，第二内腔B通过连接孔与第一内腔连通，进而使得第一内腔与第二内腔B形成并联谐振结构，在并联谐振结构的谐振频率接近于扬声器的前腔共振频率时，即可形成陷波来实现对高频谐振峰的抑制，从而能够避免由于无法抑制谐振峰而产生较为刺耳的听感，进而能够提升用户的使用体验。
与此同时，本公开实施例公开的扬声器对相关技术中的扬声器的改进，并没有影响扬声器后腔，也就不会影响扬声器的音频性能。
为了提高谐振效果，同时不影响扬声器的整体体积，可选的方案中，第二内腔B的体积可以小于第一内腔的体积。
具体的，扬声器主体200可以与扬声器外壳100形成第一内腔，扬声器 外壳100可以具有第二内腔B。第二内腔B不局限于设置在扬声器外壳100上，具体的，扬声器主体200可以具有第二内腔B。
本公开实施例中，第一内腔可以包括第一子腔A和出音通道121，出音通道121与第一子腔A连通，第一子腔A可以认为是扬声器前腔，在扬声器工作的过程中，扬声器主体200推动第一子腔A中的空气振动从而产生声音，产生的声音能够从出音通道121向终端设备的外部发出，最终实现扬声器的发声。
如上文所述，第一内腔与第二内腔B可以通过连接孔连通，在扬声器主体200与扬声器外壳100形成第一内腔，以及在第一内腔包括第一子腔A和出音通道121的前提下，第二内腔B可以通过连接孔与第一子腔A连通，进而实现与第一内腔的连通。也可以是：第二内腔B可以通过连接孔与出音通道121连通，进而实现与第一内腔的连通。本公开实施例不限制第一内腔与第二内腔通过连接孔连接的具体方式。
为了方便扬声器的装配，在可选的方案中，扬声器外壳100可以包括第一壳体110和第二壳体120，第一壳体110与第二壳体120相连。具体的，第一壳体110与第二壳体120可拆卸固定相连。在扬声器外壳100包括第一壳体110和第二壳体120的前提下，扬声器主体200可以设置在第一壳体110与第二壳体120之间，在第一壳体110与第二壳体120之间的连接即可实现对扬声器主体200的固定，进而实现扬声器主体200在扬声器外壳100上的安装。
扬声器主体200与第二壳体120连接，进而形成第一子腔A，扬声器外壳100具有出音通道121，出音通道121与第一子腔A连通，在扬声器主体200与第二壳体120连接后，第二壳体120与扬声器主体200形成第一内腔。
由于扬声器主体200的结构较为复杂，因此在可选的方案中，扬声器外壳100具有第二内腔B，此种方式较容易形成第二内腔B。具体的，第二壳体120可以包括壳本体122、支撑片123和密封片124。具体的，支撑片123可以设置在壳本体122上，支撑片123、壳本体122和扬声器主体200可以形成第一子腔A。在本公开实施例中，支撑片123可以具有朝向扬声器主体200凹陷的第一凹槽1231，密封片124封盖在第一凹槽1231的槽口，从而使 得密封片124与第一凹槽1231形成第二内腔B，第一凹槽1231的内壁可以开设有连接孔，连接孔连通第一子腔A与第二内腔B。
如上文所述，第二壳体120可以具有出音通道121，出音通道121可以由第一壳体110和第二壳体120对接而成，也可以开设在第一壳体110上，也可以开设在第二壳体120上。如图2所示，第二壳体120开设有出音通道121。
为了减小扬声器的厚度，进而减小其占用的空间，在可选的方案中，壳本体122可以开设有第一安装孔1221，支撑片123设置在第一安装孔1221中，支撑片123的第一凹槽1231从第一安装孔1221向扬声器主体200所在的一侧凹陷，此种情况下，支撑片123至少部分嵌装在壳本体122的第一安装孔1221中，从而能够减小两者的堆叠高度。
具体的，支撑片123上的第一凹槽1231的槽口所在的表面与壳本体122的外侧表面可以共面，进而有利于实现支撑片123的部分表面与壳本体122的外侧表面共面，有利于提升扬声器的外观性能。壳本体122的外侧表面能够形成扬声器的一部分外观面，此种情况下，第一凹槽1231的槽口所在的表面也能够形成扬声器的一部分外观面。
在可选的方案中，支撑片123上的第一凹槽1231的槽口所在的表面可以与密封片124的外侧表面共面，从而能够使得支撑片123和密封片124安装到位后能够与壳本体122的外侧表面共面，这无疑能够进一步提高外观性能，同时能够减小装配厚度。
为了确保对第一凹槽1231的槽口实现完全封闭的效果，第一凹槽1231内可以设置有支撑台1232，密封片124可以贴附在支撑台1232上。具体的，密封片124可以粘贴在支撑台1232上。
本公开实施例公开的扬声器中，支撑片123可以为支撑钢片，支撑片123具有较好的强度，同时具有良好的变形能力。支撑片123还可以为塑料片等，本公开实施例不限制支撑片123的具体材质。
本公开实施例公开的扬声器中，扬声器主体200可以包括振膜210和球顶220，在扬声器工作的过程中，振膜210会发生振动，球顶220与振膜210相贴合，球顶220的密度大于振膜210的密度，进而使得球顶220的惯性较 大，球顶220能够提高振膜210振动过程中的惯性，起到加强振膜210振动效果的作用。
为了不影响扬声器的振动量程，在可选的方案中，球顶220具有与第一凹槽1231的凹陷形状相匹配的第二凹槽221，振膜210与球顶220相贴合，振膜210和球顶220形成的整体能够较好地避让支撑片123的第一凹槽1231，从而能够缓解第一凹槽1231对振膜210和球顶220整体振动量程的影响。与此同时，球顶220具有第二凹槽221，第二凹槽221能够起到加强球顶220刚性的作用，进而能够减少扬声器在高频段的分割振动，从而能够扩展扬声器的频宽，很显然，这能够进一步提高扬声器的性能和听感。
请再次参考图2，扬声器主体200包括内侧磁体230、外侧磁体250和通电线圈260，内侧磁体230和外侧磁体250形成磁场，通电线圈260设置在内侧磁体230与外侧磁体250之间的缝隙中，通电线圈260与振膜210相连。在通电线圈260处于通电状态下，会受到磁场力的作用带动振膜210发生振动，从而推动第一子腔A中的空气振动，最终产生声音。
为了起到较强的驱动效果，内侧磁体230朝向振膜210的表面可以设置有导磁片240，导磁片240由导磁材料制成，导磁片240起到导磁的作用，从而能够使得内侧磁体230与外侧磁体250作用于通电线圈260上的磁力更大。例如，导磁片240可以为铁质垫片。
由于球顶220的第二凹槽221的凹陷方向与第一凹槽1231的凹陷方向一致，因此第二凹槽221的凹陷方向朝向内侧磁体230。在可选的方案中，导磁片240设置在内侧磁体230朝向振膜210的一侧，导磁片240与第二凹槽221相对的区域可以开设有第三凹槽241。第三凹槽241能够更好地起到避让作用，能够避让振膜210和球顶220的振动，特别是避让具有第二凹槽221的球顶220。在导磁片240上开设第三凹槽241，第三凹槽241通常位于导磁片240的磁通稀疏区域，因此在导磁片240上开设第三凹槽241对导磁片240的导磁性能影响较小。
第一凹槽1231的内壁开设有连接孔，连接孔实现第一子腔A与第二内腔B的连通，从而使得第一内腔与第二内腔B形成并联谐振结构。在可选的方案中，支撑片123可以开设有第二安装孔，第二安装孔可以安装有管件130， 管件130用于连通第一子腔A和第二内腔B，也就是说，管件130的中心孔即为上文所述的连接孔。在实际的设计过程中，本领域技术人员可以合理地设计管件130的长度、直径等参数，从而能够更精确地调节谐振频率，从而使得并联谐振结构的谐振频率接近于扬声器前腔的共振频率，最终能够更精确地抑制谐振峰。在并联谐振结构的谐振频率等于扬声器前腔的共振频率的前提下，能够更好地抑制谐振峰。
具体的，管件130可以通过多种方式实现在第二安装孔中的安装，例如管件130可以通过粘接、焊接等方式安装在第二安装孔中。请再次参考图2，支撑片123可以固定有固定栓140，固定栓140具有与第二安装孔相对的螺纹孔。管件130的外壁具有螺纹。管件130可以通过第二安装孔贯穿支撑片123、且与螺纹孔螺纹连接。此种情况下，操作人员可以通过旋拧管件130，从而实现对管件130在第一子腔A和第二内腔B中长度的调节，从而能够更精细地调节第一子腔A与第二内腔B形成的并联谐振结构。
可选的方案中，第二安装孔可以开设在第一凹槽1231朝向其槽口的底壁的中心，从而有利于提高振动的均衡性。
基于本公开实施例公开的扬声器，本公开实施例公开一种终端设备，所公开的终端设备包括上文实施例所述的扬声器。
本公开实施例公开的终端设备可以是手机、平板电脑、电子书阅读器、游戏机、可穿戴设备(例如智能手表)等终端设备，本公开实施例不限制终端设备的具体种类。
本公开上文实施例中重点描述的是各个实施例之间的不同，各个实施例之间不同的优化特征只要不矛盾，均可以组合形成更优的实施例，考虑到行文简洁，在此则不再赘述。
以上所述仅为本公开的实施例而已，并不用于限制本公开。对于本领域技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本公开的权利要求范围之内。

Claims (17)

  1. 一种扬声器，包括扬声器外壳和扬声器主体，所述扬声器主体与所述扬声器外壳相连，所述扬声器主体与所述扬声器外壳形成空腔，所述空腔包括第一内腔和第二内腔，所述第一内腔与所述第二内腔通过连接孔连通。
  2. 根据权利要求1所述的扬声器，其中，所述扬声器主体与所述扬声器外壳形成所述第一内腔，所述扬声器外壳具有所述第二内腔。
  3. 根据权利要求2所述的扬声器，其中，所述第一内腔包括第一子腔和出音通道，所述出音通道与所述第一子腔连通，所述第一子腔通过所述连接孔与所述第二内腔连通。
  4. 根据权利要求3所述的扬声器，其中，所述扬声器外壳包括第一壳体和与所述第一壳体可拆卸相连的第二壳体，所述扬声器主体设置在所述第一壳体与所述第二壳体之间，且所述扬声器主体与所述第二壳体之间形成所述第一子腔，所述第二壳体设置有所述出音通道。
  5. 根据权利要求4所述的扬声器，其中，所述第二壳体包括壳本体、支撑片和密封片，所述支撑片设置在所述壳本体上，所述支撑片具有朝向所述扬声器主体凹陷的第一凹槽，所述密封片封盖在所述第一凹槽)的槽口，且与所述第一凹槽形成所述第二内腔，所述第一凹槽的内壁开设有所述连接孔。
  6. 根据权利要求5所述的扬声器，其中，所述壳本体开设有第一安装孔，所述支撑片设置在所述第一安装孔中，所述支撑片上的所述第一凹槽的槽口所在的表面与所述壳本体的外侧表面共面。
  7. 根据权利要求6所述的扬声器，其中，所述支撑片上的所述第一凹槽的槽口所在的表面与所述密封片的外侧表面共面。
  8. 根据权利要求5所述的扬声器，其中，所述第一凹槽内设置有支撑台，所述密封片粘贴在支撑台上。
  9. 根据权利要求5所述的扬声器，其中，所述支撑片为支撑钢片。
  10. 根据权利要求5所述的扬声器，其中，所述扬声器主体包括振膜和球顶，所述球顶具有与所述第一凹槽的凹陷形状相匹配的第二凹槽，所述球顶与所述振膜相贴合。
  11. 根据权利要求10所述的扬声器，其中，所述扬声器主体包括内侧磁体和设置在所述内侧磁体上的导磁片，所述导磁片设置在所述内侧磁体朝向所述振膜的一侧，所述导磁片与所述第二凹槽相对的区域开设有第三凹槽。
  12. 根据权利要求5所述的扬声器，其中，所述支撑片开设有第二安装孔，所述第二安装孔安装有管件，所述管件连通所述第一子腔和所述第二内腔。
  13. 根据权利要求12所述的扬声器，其中，所述支撑片固定有固定栓，所述固定栓具有与所述第二安装孔相对的螺纹孔，所述管件的外壁具有螺纹，所述管件通过所述第二安装孔贯穿所述支撑片、且与所述螺纹孔螺纹连接。
  14. 根据权利要求12所述的扬声器，其中，所述第二安装孔开设在所述第一凹槽朝向其槽口的底壁的中心。
  15. 根据权利要求2所述的扬声器，其中，所述第一内腔包括第一子腔和出音通道，所述出音通道与所述第一子腔连通，所述出音通道通过所述连接孔与所述第二内腔连通。
  16. 根据权利要求1所述的扬声器，其中，所述扬声器主体具有所述第二内腔。
  17. 一种终端设备，包括权利要求1-16中任一项所述的扬声器。
PCT/CN2020/085671 2019-05-15 2020-04-20 扬声器及终端设备 Ceased WO2020228492A1 (zh)

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