WO2023169495A1 - 电子设备 - Google Patents
电子设备 Download PDFInfo
- Publication number
- WO2023169495A1 WO2023169495A1 PCT/CN2023/080411 CN2023080411W WO2023169495A1 WO 2023169495 A1 WO2023169495 A1 WO 2023169495A1 CN 2023080411 W CN2023080411 W CN 2023080411W WO 2023169495 A1 WO2023169495 A1 WO 2023169495A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sound
- cavity
- electronic device
- diaphragm
- rear cavity
- Prior art date
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- 238000009434 installation Methods 0.000 claims description 28
- 230000009467 reduction Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 229920006268 silicone film Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—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
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
Definitions
- the present application relates to the technical field of electronic equipment, specifically, to an electronic equipment.
- openings in the rear cavity of the sound-generating device are designed, and the sound waves with opposite phases in the front cavity and the back cavity are superimposed and canceled, thereby reducing the leakage of sound waves.
- the sound waves in the front cavity and the rear cavity of the sound-generating device use the same sound source (both are generated by the diaphragm of the sound-generating device), which makes it impossible to adjust the vibration frequency of the sound wave in the rear cavity, which in turn causes the sound waves in the front cavity and the rear cavity to be different from each other.
- the sound waves can only superimpose and cancel within a specific frequency range, thus affecting the sound-generating effect of the sound-generating device.
- the present application aims to provide an electronic device that at least solves the technical problem in the related art that the sound waves of the front sound cavity and the sound waves of the rear sound cavity can only be superimposed and destructed within a specific frequency range in electronic equipment.
- the embodiment of the present application proposes an electronic device, including: a device body.
- the device body includes an installation cavity, a front cavity and a rear cavity.
- the front cavity and the rear cavity are located on opposite sides of the installation cavity.
- the installation cavity is connected to the front cavity respectively.
- the first sound outlet and the second sound outlet of the rear cavity; the sound emitting device is arranged in the installation cavity; the sound attenuation device is arranged in the rear cavity.
- the sound-generating device can generate a first sound wave in the front cavity; at the same time, the vibrating air in the rear cavity can cause the muffling device to vibrate and generate a second sound wave.
- the front cavity and The rear cavity is located on opposite sides of the sound-generating device, thereby causing the phase of the second sound wave to be opposite to the phase of the first sound wave.
- the second sound wave generated by the muffler device can be used to offset at least part of the first sound wave, thereby reducing the leakage of sound waves when the sound-emitting device is operating.
- the frequency of the second sound wave generated by the muffler device can be adjusted, so that the second sound wave and at least a part of the first sound wave can resonate in different frequency bands, so that the electronic device can reduce the specific frequency band in a more targeted manner. of sound leakage.
- Figure 1 is one of the partial cross-sectional views of an electronic device according to the present application.
- Figure 2 is one of the partial structural schematic diagrams of an electronic device according to the present application.
- Figure 3 is a partial cross-sectional view of an electronic device according to the present application.
- Figure 4 is the second partial structural schematic diagram of an electronic device according to the present application.
- Figure 5 is one of the exploded views of an electronic device according to the present application.
- Figure 6 is an exploded view 2 of an electronic device according to the present application.
- Figure 7 is an exploded view of an electronic device according to the present application.
- FIG. 8 is a sound field comparison diagram between the electronic equipment according to the embodiment of the present application and the electronic equipment in related technologies.
- first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the figures so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in orders other than those illustrated or described herein, and that "first,” “second,” etc. are distinguished Objects are usually of one type, and the number of objects is not limited. For example, the first object can be one or multiple.
- “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
- the embodiment of the present application provides an electronic device 100, including: a device body 102.
- the device body 102 includes an installation cavity 104, a front cavity 106 and a rear cavity 108.
- the front cavity 106 and the rear cavity 108 Located on opposite sides of the installation cavity 104, the installation cavity 104 is respectively connected to the first sound outlet 122 of the front cavity 106 and the second sound outlet 124 of the rear cavity 108; the sound-generating device 110 is disposed in the installation cavity 104; the muffler Component 114 is disposed in the rear cavity 108.
- the electronic device 100 includes a device body 102 , a sound-emitting component 110 and a sound-emitting component 114 .
- the device body 102 includes an installation cavity 104, a front cavity 106 and a rear cavity 108.
- the front cavity 106 and the rear cavity 108 are located on opposite sides of the installation cavity 104; and the installation cavity 104 passes through the first sound outlet of the front cavity 106.
- 122 is connected to the external space, and the installation cavity 104 is connected to the external space through the second sound outlet 124 of the rear cavity 108 .
- the sound-emitting device 110 is disposed in the installation cavity 104
- the muffler device 114 is disposed in the rear cavity 108
- the muffler device is located between the sound-emitting device 110 and the second sound outlet 124 .
- the muffler device 114 can be driven by the air flow in the rear cavity 108 to generate vibration and generate sound waves.
- the second sound wave generated by the muffler device 114 can be used to offset at least part of the first sound wave, thereby reducing the sound wave leakage when the sound-emitting device 110 is operating.
- the electronic device 100 proposed by the embodiment of the present application is provided with a muffler device 114 in the rear cavity 108 , and the second sound wave generated by the muffler device 114 offsets the noise of the sound-emitting device 110 in the back cavity 108 . At least a portion of the first sound wave is generated in the front cavity 106 .
- the frequency of the second sound wave generated by the muffler device 114 can be adjusted, so that the second sound wave and at least part of the first sound wave can be superimposed and offset in different frequency bands, so that the electronic device 100 can reduce specific noise in a more targeted manner. Sound leakage in frequency range.
- a muffler device 114 is added to the rear cavity 108 , which can effectively reduce the call volume in the low frequency band ( ⁇ 600Hz).
- the main frequency range of daily speech is 300Hz to 500Hz.
- the amount of leakage sound in this frequency band can be reduced by more than 10dB, which can achieve a significant anti-leakage effect.
- the line L1 in Figure 8 represents the relationship between the frequency band and the sound volume in the related art.
- the line L2 in Figure 8 represents the relationship between the frequency band and the sound volume in the electronic device 100 of the embodiment of the present application.
- the abscissa in Figure 8 represents the total sound field. Vibration frequency (unit: Hz), the ordinate in Figure 8 represents the loudness of the total sound field (unit: db), and the octave band in Figure 8: pext (0, 1, 0) (pa).
- the structural dimensions of the muffling device 114 and the structural dimensions of the front cavity 106 and the rear cavity 108 can be set according to the actual size of the electronic device 100 ; and the front cavity can be determined by simulation means.
- the structural dimensions of the cavity 106 and the rear cavity 108 are used to achieve optimal silencing effects and ensure minimal sound wave leakage.
- the sound-generating device 110 includes a vibration source 112; in the vibration direction of the vibration source 112, the front cavity 106 and the rear cavity 108 are located in phase with the vibration source 112. both sides of the back.
- the sound-generating device 110 includes a vibration source 112 .
- the vibration source 112 can vibrate back and forth and cause the gas in the front cavity 106 and the rear cavity 108 to vibrate.
- the front cavity 106 and the rear cavity 108 are located on opposite sides of the vibration source 112 .
- the vibration source 112 can drive the airflow to vibrate in the front cavity 106 and the rear cavity 108 respectively, so that the phase of the second sound wave generated by the muffler device 114 is opposite to the phase of the first sound wave generated by the vibration source 112 in the front cavity 106, so that The second sound wave generated by the muffler device 114 can be used to superimpose and offset the first sound wave generated by the vibration source 112 in the front cavity 106 to achieve the purpose of reducing sound wave leakage.
- the muffler device 114 seals the rear cavity 108 .
- the muffler device 114 is disposed in the rear cavity 108 and is in contact with the inner wall of the rear cavity 108 to thereby seal the rear cavity 108 .
- the embodiment of the present application seals the rear cavity 108 through the muffler device 114, thereby isolating the sound-emitting device 110 inside the installation cavity 104 from the external environment of the electronic device 100.
- external water vapor or impurities can enter the interior of the electronic device 100 through the back cavity 108.
- external water vapor or impurities can be prevented from entering the installation cavity 104 through the back cavity 108 to ensure that the installation cavity is The sound-generating device 110 in 104 is safe to use.
- the back cavity is open, which directly causes the inside of the electronic device to communicate with the external environment, and external water vapor or impurities can easily enter the inside of the electronic device, reducing the service life of the electronic device.
- the interior of the electronic device 100 is effectively isolated from the external environment through the muffler device 114, thereby preventing external water vapor or impurities from entering the installation cavity 104 through the rear cavity 108, which has the effect of extending the service life of the electronic device 100. Obvious help.
- the muffler device 114 can be used to improve and alleviate the sound wave leakage of the electronic device 100, and can also be used to extend the service life of the electronic device 100.
- the noise-cancelling device 114 includes: a diaphragm 116 , which is disposed in the rear cavity 108 and can generate sound under the action of the sound-generating device 110 vibration.
- the noise reduction device 114 includes a diaphragm 116 .
- the diaphragm 116 is disposed in the rear cavity 108 and can vibrate driven by the vibrating airflow in the rear cavity 108 to generate a first sound wave for canceling at least part of the first sound wave.
- the diaphragm 116 is in contact with the inner wall of the back cavity 108 and ensures that there is no gap between the diaphragm 116 and the inner wall of the back cavity 108, thereby sealing the back cavity 108 to prevent external water vapor or impurities from entering the electrons. Interior of device 100.
- the diaphragm 116 of the muffler device 114 is a passive diaphragm.
- the material and thickness of the diaphragm 116 of the muffler device 114 are determined according to the resonance frequency of the second sound wave and at least part of the first sound wave, and may be (but not limited to) silicone film, composite film, rubber film, foam film, etc. .
- the diaphragm 116 of the muffler device 114 is integrally connected with the inner wall of the rear cavity 108 .
- the diaphragm 116 can be integrally bonded to the inner wall of the rear cavity 108 through glue, hot melt, or injection molding.
- the noise reduction device 114 further includes: a counterweight 118 disposed on the diaphragm 116 for adjusting the vibration frequency of the diaphragm 116 .
- the muffling device 114 also includes a counterweight 118 .
- the counterweight 118 is disposed on the diaphragm 116 and can vibrate with the diaphragm 116 .
- the weight of the counterweight 118 is greater than the weight of the diaphragm 116, and the vibration frequency of the diaphragm 116 is adjusted through the counterweight 118.
- a counterweight 118 is provided on the diaphragm 116 and the vibration frequency of the diaphragm 116 is adjusted through the counterweight 118 to thereby adjust the resonance frequency range of the second sound wave and at least part of the first sound wave.
- embodiments of the present application can cause the second sound wave to resonate with at least part of the first sound wave in a specific frequency range, thereby improving the sound leakage phenomenon in the specific frequency range.
- homologous sounds are used to cancel each other out (that is, the third sound produced by the same vibration source is used to cancel each other).
- the first sound wave and the second sound wave cancel each other out), and the resonant frequency range of the same sound wave cannot be adjusted.
- the embodiment of the present application uses the second sound wave generated by the muffler device 114 to offset at least part of the first sound wave generated by the vibration source 112 of the sound-generating device 110 in the front cavity 106, and the first sound wave and the second sound wave are different.
- Source sound (the first sound wave comes from the sound-emitting device 110, and the second sound wave comes from the muffler device 114); and, the frequency of the second sound wave can be adjusted through the counterweight 118, so that the second sound wave can be used to offset a specific frequency.
- the resonant frequency range of the second sound wave and at least part of the first sound wave is adjusted, and the sound leakage phenomenon is improved in a specific frequency range.
- the counterweight 118 may be a mass block, and the mass block may be made of different materials to control quality.
- the counterweight 118 and the diaphragm 116 are connected as one body.
- the counterweight 118 and the diaphragm 116 can be bonded together as a whole through glue, hot melt, or injection molding.
- the counterweight 118 is disposed on the side of the diaphragm 116 .
- the counterweight 118 is disposed on the side of the diaphragm 116 .
- the counterweight 118 may be disposed on one side of the diaphragm 116, specifically on the side of the diaphragm 116 facing the sound-generating device 110, or the counterweight 118 may be disposed on the side of the diaphragm 116 facing away from the sound-generating device 110 ( This is not shown in the figure).
- the counterweights 118 may also be disposed on both sides of the diaphragm 116 .
- the weight member 118 is located in the middle of the diaphragm 116 .
- the counterweight 118 is located in the middle of the diaphragm 116 . In this way, the counterweight 118 adjusts the vibration frequency of the diaphragm 116 at the center of the diaphragm 116 . Moreover, the counterweight 118 is disposed in the center of the diaphragm 116 to evenly distribute the weight of the diaphragm 116 in the circumferential direction of the diaphragm 116, thereby avoiding polarization during the vibration of the diaphragm 116.
- the first sound outlet 122 and the second sound outlet 124 are located on different end surfaces of the device body 102 .
- the front cavity 106 and the rear cavity 108 are located on opposite sides of the installation cavity 104, and The first sound outlet 122 and the second sound outlet 124 are located on different end faces of the device body 102 .
- the first sound outlet 122 is disposed on the front end face of the device body 102
- the second sound outlet 124 is disposed on the front side of the device body 102 .
- Dorsal end In this way, the first sound outlet 122 can be used as a front sound outlet of the electronic device 100
- the second sound outlet 124 can be used as a rear sound outlet of the electronic device 100 .
- the device body 102 further includes a bracket 120 , the rear cavity 108 is disposed on the bracket 120 , and the muffling device 114 is connected to the bracket 120 .
- the device body 102 also includes a bracket 120 .
- the bracket 120 is disposed inside the electronic device 100, and the bracket 120 is used to install circuit boards and other related components.
- the above-mentioned rear cavity 108 is provided on the bracket 120 , and the muffling device 114 is disposed on the bracket 120 , thereby ensuring a stable connection of the muffling device 114 inside the electronic device 100 .
- the diaphragm 116 and the bracket 120 have an integrated structure.
- the muffling device 114 and the bracket 120 are of an integrated structure. Specifically, the diaphragm 116 and the bracket 120 of the muffler device 114 have an integrated structure. In this way, on the one hand, the stable connection of the muffler device 114 on the bracket 120 can be ensured, and on the other hand, there can be ensured that there is a gap at the connection between the diaphragm 116 and the bracket 120, so that the muffler device 114 can seal the rear cavity 108, thereby avoiding external water vapor. Or impurities enter the installation cavity 104 through the rear cavity 108 to ensure the safety of the sound-generating device 110 in the installation cavity 104 .
- the diaphragm 116 and the bracket 120 can be assembled into one body through adhesive, injection molding, or other methods.
- the bracket 120 is assembled inside the electronic device 100 and the front cavity 106 and the rear cavity 108 are isolated.
- the device body 102 also includes a cover 126 and a screen assembly 128 ; the second sound outlet 124 is provided on the cover 126 , the front cavity 106 and the first outlet 128 .
- the sound port 122 is provided on the screen component 128 .
- the device body 102 also includes a cover 126 and a screen assembly 128.
- the screen assembly 128 is disposed on the front end surface of the electronic device 100
- the cover plate 126 is disposed on the rear end surface of the electronic device 100, and can be used as a battery back cover.
- the front cavity 106 and the first sound outlet 122 are provided on the screen assembly 128
- the second sound outlet 124 is provided on the cover 126 .
- the number of the second sound outlet 124 is one.
- the number of the second sound outlet 124 can be set to one. At this time, the second sound outlet 124 is connected to the rear sound cavity of the sound-generating device 110 through the rear cavity 108 .
- the shape and opening area of the second sound outlet 124 can be designed according to actual needs.
- the second sound outlet 124 may be a strip-shaped port or a circular port.
- the number of second sound outlets 124 is at least two, and at least two second sound outlets 124 are connected to the rear cavity 108 at the same time.
- the number of the second sound outlets 124 can be set to at least two. At this time, at least two second sound outlets 124 are simultaneously connected to the rear sound cavity of the sound-generating device 110 through the rear cavity 108 .
- the shape and opening area of the second sound outlet 124 can be designed according to actual needs.
- the second sound outlet 124 may be a strip-shaped port or a circular port.
- the opening area of the second sound outlet 124 can be set to be relatively large; when at least two second sound outlets 124 are provided, it can be set The opening area of the second sound outlet 124 is relatively small.
- the at least two second sound outlets 124 are spaced apart, and may be distributed in the width direction of the electronic device 100 , or may be in the electronic device 100 distributed along the length direction.
- the sound-generating device 110 is in contact with the inner wall of the installation cavity 104 , and the front cavity 106 and the rear cavity 108 are isolated by the sound-generating device 110 .
- the sound-generating device 110 is in contact with the inner wall of the installation cavity 104, so that the front cavity 106 and the rear cavity 108 are separated by the sound-generating device 110. That is, the front cavity 106 and the rear cavity 108 are located on opposite sides of the sound-generating device 110, and the front cavity 106 and the rear cavity 108 are not connected.
- the first sound wave generated by the front sound cavity of the sound generating device 110 enters the front cavity 106, and the muffling device 114 vibrates under the action of the air flow in the rear cavity 108 and generates the second sound wave, thereby ensuring that the second sound wave is consistent with the first sound wave.
- the waves are in phase so that the second sound wave can act to cancel at least a portion of the first sound wave.
- the sound-generating device 110 can be receiver.
- the specific structure of the receiver will not be discussed here, as it can be understood by those skilled in the art.
- the vibration source 112 of the sound-generating device 110 includes a vibrating membrane and a driving member, and the driving member can drive the vibrating membrane to generate vibration.
- the driving element can adopt a ball top.
- the vibrating membrane is located on the side of the driving member facing the front cavity 106 .
- the sound-generating device 110 also includes a mounting member 130 , which is disposed on the bracket 120 and located in the mounting cavity 104 .
- the mounting member 130 is sealed with the bracket 120 to ensure that the front cavity 106 and the rear cavity 108 are not connected.
- Sound-generating devices such as receivers in electronic equipment play a role in transmitting call information.
- the sound-generating device works, part of the sound waves is transmitted to the human ear, and part of the sound waves propagates to the external space.
- preventing sound waves from leaking and keeping communication content confidential are important issues that consumers pay attention to.
- this application proposes an electronic device 100.
- a muffler device 114 is provided in the rear cavity 108 of the electronic device 100.
- the muffler device 114 includes a diaphragm 116, a counterweight 118 and other components.
- the vibrating airflow in the rear cavity 108 can cause the muffler device 114 to vibrate, so that the muffler device 114 generates a second sound wave, and the phase of the second sound wave is opposite to the phase of the first sound wave, so that the second sound wave It allows users to offset part of the first sound wave to achieve active noise reduction.
- this application ensures the sealing of the electronic device 100 by integrating the muffler device 114 with the bracket 120 of the electronic device 100 while preventing leakage during calls. Further, by adjusting the compliance of the diaphragm 116, the density and damping of the counterweight 118, etc., the design of this process can be made more controllable.
- the present application can reduce the leakage of sound waves when the sound-generating device 110 is working, ensure the sealing of the electronic device 100 , and protect related components inside the electronic device 100 .
- the muffling device 114 is adjustable and can be adjusted with the sound-generating device 110 according to actual needs.
- this application has lower requirements for the rear sound cavity of the sound-generating device 110, which is beneficial to the electronics. Stacking design of sub-device 100.
- the electronic device 100 proposed in the embodiment of the present application includes a screen assembly 128, a first sound outlet 122, a front Cavity 106, sound-generating device 110, sound-generating device 110, rear cavity 108, muffler device 114, bracket 120, cover 126, second sound outlet 124 and other components.
- the number of the second sound outlet 124 is one; in the electronic device 100 shown in FIGS. 6 and 7 , the number of the second sound outlet 124 is two. .
- the second sound outlet 124 is a strip-shaped outlet; in the electronic device 100 shown in FIG. 7 , the second sound outlet 124 is a circular outlet.
- the muffler device 114 includes a diaphragm 116 and a counterweight 118.
- the diaphragm 116 and the bracket 120 are an integrated structure.
- the diaphragm 116 faces the back of the sound-emitting device 110 and passes through the cover plate 126.
- the second sound outlet 124 is opened to produce sound.
- the counterweight 118 is located in the center of the diaphragm 116 and is bonded to the diaphragm 116; the diaphragm 116 and the bracket 120 are integrally formed.
- one or more second sound outlets 124 may be provided, and the shape of the second sound outlet 124 may be designed according to actual requirements.
- the sound-generating device 110 when the sound-generating device 110 is working, the sound-generating device 110 promotes the vibration of the air in the front cavity 106 and the rear cavity 108, thereby generating a first sound wave in the front cavity 106 and a first sound wave in the rear cavity 108. a second sound wave, and the first sound wave is in opposite phase to the second sound wave.
- the airflow in the rear cavity 108 can cause the muffling device 114 to vibrate and generate a second sound wave, and the phase of the second sound wave is opposite to that of the first sound wave.
- the second sound wave generated by the sound-emitting device 114 can offset at least part of the first sound wave, and generate destructive interference in the total sound field, thereby reducing sound leakage when the sound-emitting device 110 is working. .
- the counterweight 118 and the diaphragm 116 are bonded together as a whole through glue, hot melt, or injection molding, and the counterweight 118 can be placed on both sides of the diaphragm 116 .
- the muffling device 114 and the bracket 120 are assembled into one body through adhesives, injection molding, and other means. The bracket 120 is assembled in the whole machine, and it is necessary to ensure that there is no other leakage between the rear sound cavity of the sound-generating device 110 and the diaphragm 116 .
- the structural design of the front cavity 106 and the rear cavity 108 can be confirmed through simulation means to determine the most appropriate dimensions such as length, width, and height to achieve the optimal distribution of the first sound wave and the second sound wave. Offset to ensure minimal sound wave leakage.
- the weight 118 on the diaphragm 116 can be made of different materials to control the quality, thereby adjusting the vibration frequency of the diaphragm 116, which can facilitate debugging and specifically reduce sound leakage in certain frequency bands.
- the front cavity 106 and the rear cavity 108 are completely isolated.
- the counterweight 118 is located at the center of the diaphragm 116 to reduce the polarization phenomenon of the muffler device 114 .
- the radiation surface outlet of the muffler device 114 is designed to radiate sound waves from the front.
Abstract
本申请公开了一种电子设备，包括：设备本体，设备本体包括安装腔、前腔和后腔，前腔和后腔位于安装腔相背的两侧，安装腔分别连通于前腔的第一出音口和后腔的第二出音口；发声器件，设置于安装腔内；消声器件，设置于后腔内。
Description
相关申请的交叉引用
本申请要求于2022年03月10日提交的申请号为202210235509.9，发明名称为“电子设备”的中国专利申请的优先权，其通过引用方式全部并入本申请。
本申请涉及电子设备技术领域，具体而言，涉及一种电子设备。
为了减小声波泄露，相关技术中设计发声器件的后腔开孔，利用前腔与后腔相位相反的声波叠加相消，从而减小声波泄露。
但是，发声器件的前腔与后腔的声波利用的是同声源(都是发声器件的振膜产生)，这使得后腔声波的振动频率没有办法调整，进而导致前腔的声波与后腔的声波仅能够在特定的频率段内叠加相消，进而影响发声器件的发声效果。
发明内容
本申请旨在提供一种电子设备，至少解决相关技术中电子设备中前音腔的声波与后音腔的声波仅能够在特定的频率段内叠加相消的技术问题。
本申请实施例提出了一种电子设备，包括：设备本体，设备本体包括安装腔、前腔和后腔，前腔和后腔位于安装腔相背的两侧，安装腔分别连通于前腔的第一出音口和后腔的第二出音口；发声器件，设置于安装腔内；消声器件，设置于后腔内。
在本申请中，发声器件能够在前腔产生第一声波；与此同时，后腔内振动的空气能够引起消声器件振动并产生第二声波。特别地，由于前腔和
后腔位于发声器件相背的两侧，进而使得第二声波的相位与第一声波的相位相反。这样，在电子设备总的声场内，消声器件产生的第二声波能够用于抵消至少部分第一声波，从而减小了发声器件工作时的声波泄漏。
并且，消声器件产生的第二声波的频率可以调节，使得第二声波与至少一部分第一声波能够在不同的频率段内产生共振，使得该电子设备能够更加有针对性地来降低特定频率段的漏音。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本申请一个电子设备的局部剖视图之一；
图2是根据本申请一个电子设备的局部结构示意图之一；
图3是根据本申请一个电子设备的局部剖视图之二；
图4是根据本申请一个电子设备的局部结构示意图之二；
图5是根据本申请一个电子设备的爆炸视图之一；
图6是根据本申请一个电子设备的爆炸视图之二；
图7是根据本申请一个电子设备的爆炸视图之三；
图8是本申请实施例的电子设备与相关技术中电子设备的声场对比图。
图1至图7中的附图标记：
100电子设备，102设备本体，104安装腔，106前腔，108后腔，110发声器件，112振源，114消声器件，116振膜，118配重件，120支架，122第一出音口，124第二出音口，126盖板，128屏幕组件，130安装件。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进
行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的电子设备100进行详细地说明。
如图1和图3所示，本申请实施例提出了一种电子设备100，包括：设备本体102，设备本体102包括安装腔104、前腔106和后腔108，前腔106和后腔108位于安装腔104相背的两侧，安装腔104分别连通于前腔106的第一出音口122和后腔108的第二出音口124；发声器件110，设置于安装腔104内；消声器件114，设置于后腔108内。
可以理解的，如图1和图3所示，电子设备100包括设备本体102、发声器件110和消声器件114。其中，设备本体102包括安装腔104、前腔106和后腔108，前腔106和后腔108位于安装腔104相背的两侧；并且，安装腔104通过前腔106的第一出音口122连通于外部空间，安装腔104通过后腔108的第二出音口124连通于外部空间。
此外，如图2和图4所示，发声器件110设置在安装腔104内，消声器件114设置在后腔108内，消声器件处于发声器件110与第二出音口124之间。在发声器件110工作时，消声器件114能够在后腔108内气流驱动产生振动并产生声波。
进一步地，如图1和图3所示，发声器件110工作会同时推动前腔106
和后腔108内的空气振动。因此，在发声器件110工作时，发声器件110能够在前腔106产生第一声波；与此同时，后腔108内的振动的空气振动能够引起消声器件114振动，进而使得消声器件114产生第二声波。特别地，由于前腔106和后腔108位于发声器件110相背的两侧，进而使得第二声波的相位与第一声波的相位相反。这样，在电子设备100总的声场内，消声器件114产生的第二声波能够用于抵消至少部分第一声波，从而减小了发声器件110工作时的声波泄漏。
更进一步地，如图2和图4所示，本申请实施例所提出的电子设备100在后腔108内增设有消声器件114，并且通过消声器件114产生的第二声波来抵消发声器件110在前腔106内产生的至少一部分第一声波。并且，消声器件114产生的第二声波的频率可以调节，进而第二声波与至少一部分第一声波能够在不同的频率段内叠加抵消，使得该电子设备100能够更加有针对性地来降低特定频率段的漏音。
具体地，如图8所示，本申请实施例在后腔108内增设有消声器件114，可在低频段(<600Hz)有效降低通话声量。并且日常语音的主要频率段300Hz到500Hz。由仿真结果，该频段内泄露声量可降低10dB以上，能起到显著的防泄漏效果。具体地，图8中线条L1表示相关技术中频率段与声量的关系，图8中线条L2表示本申请实施例的电子设备100中频率段与声量的关系，图8中横坐标表示总声场的振动频率(单位为Hz)，图8中纵坐标表示总声场的响度(单位为db)，并且图8中倍频带：pext(0，1，0)(pa)。
具体地，如图1和图3所示，消声器件114的结构尺寸、以及前腔106和后腔108的结构尺寸可根据电子设备100的实际尺寸进行设置；并且，可以通过仿真手段来确定前腔106和后腔108的结构尺寸，用来实现最优的消声效果，保证声波泄露做到最小。
在一些可能的实施方式中，如图1和图3所示，发声器件110包括振源112；在振源112的振动方向上，前腔106和后腔108位于振源112相
背的两侧。
可以理解的，发声器件110包括振源112。其中，发声器件110工作时，振源112能够往复振动，并引起前腔106和后腔108内的气体振动。此外，在振源112的振动方向上，前腔106和后腔108位于振源112相背的两侧。这样，振源112能够在前腔106和后腔108分别驱动气流振动，进而使得消声器件114产生的第二声波的相位与振源112在前腔106产生的第一声波的相位相反，使得消声器件114产生的第二声波可用于与振源112在前腔106产生的第一声波相叠加抵消，达到减少声波泄露的目的。
在一些可能的实施方式中，如图1和图3所示，消声器件114密封后腔108。
可以理解的，消声器件114设置在后腔108内，并且与后腔108的内壁相接触，进而密封后腔108。特别地，本申请实施例通过消声器件114来密封后腔108，进而将安装腔104内部的发声器件110与电子设备100的外部环境相隔离。
这样，在电子设备100使用过程中，能够外部水汽或杂质通过后腔108进入到电子设备100的内部，特别是可以避免外部水汽或杂质通过后腔108进入到安装腔104内，以保证安装腔104内发声器件110的使用安全。
具体地，相关技术中后腔均为敞开设置，这样直接导致电子设备的内部与外部环境相通，外部水汽或杂质容易进入电子设备的内部，降低了电子设备的使用寿命。本申请实施例中，通过消声器件114有效地将电子设备100的内部与外部环境相隔离，进而避免外部水汽或杂质通过后腔108进入到安装腔104内，对于延伸电子设备100的使用寿命具有明显的帮助。
因此，本申请实施例提出的电子设备100中，消声器件114既可以用于改善并缓解电子设备100的声波泄漏情况，又可以用于延长电子设备100的使用寿命。
在一些可能的实施方式中，如图1、图2、图3和图4所示，消声器件114包括：振膜116，设置于后腔108内，并能够在发声器件110的作用下
振动。
可以理解的，消声器件114包括振膜116。其中，振膜116设置后腔108内，并且能够在后腔108内的振动气流的推动下振动，进而产生用于抵消至少部分第一声波的第一声波。此外，振膜116与后腔108的内壁相接触，并保证振膜116与后腔108的内壁之间并不存在空隙，进而起到密封后腔108的作用，避免外部水汽或杂质进入到电子设备100的内部。
具体地，消声器件114的振膜116为无源振膜。具体地，消声器件114的振膜116的材质和厚度根据第二声波与至少一部分第一声波的共振频率确定，可选用(但不限于)硅胶膜、复合薄膜、橡胶膜、泡棉膜等。
具体地，消声器件114的振膜116与后腔108的内壁一体连接。其中，振膜116可以通过胶水、热熔或者注塑等方式与后腔108的内壁粘接为一体。
在一些可能的实施方式中，如图1、图2、图3和图4所示，消声器件114还包括：配重件118，设置于振膜116上，用于调节振膜116的振动频率。
可以理解的，消声器件114还包括配重件118。其中，配重件118设置在振膜116上，并且能够随振膜116振动。特别地，配重件118的重量大于振膜116的重量，通过配重件118来调节振膜116的振动频率。
其中，配重件118的质量越大，振膜116的振动频率越低，第二声波与至少一部分第一声波的共振频率段也就越低；配重件118的质量越小，振膜116的振动频率越高，第二声波与至少一部分第一声波的共振频率段也就越高。
因此，本申请实施例通过在振膜116上设置配重件118，并通过配重件118来调节振膜116的振动频率，进而调节第二声波与至少一部分第一声波的共振频率段。这样，本申请实施例能够使得第二声波与至少一部分第一声波在特定的频率段内产生共振，进而在特定的频率段内改善漏音现象。
特别地，相关技术中利用同源声相互抵消(即利用同一振源产生的第
一声波和第二声波相互抵消)，同源声的共振频率段无法调节。本申请实施例利用消声器件114产生的第二声波来抵消发声器件110的振源112在前腔106内产生的第一声波的至少一部分，而上述第一声波与第二声波为非同源声(第一声波来自于发声器件110，第二声波来自于消声器件114)；并且，第二声波的频率能够通过配重件118进行调节，进而使得第二声波能够用于抵消特定频率段内的第一声波，进而调节第二声波与至少一部分第一声波的共振频率段，并在特定的频率段内改善漏音现象。
具体地，如图1和图3所示，配重件118可采用质量块，质量块可以通过不同的材料来控制质量。
具体地，如图1和图3所示，配重件118与振膜116连接为一体。具体地，配重件118与振膜116可以通过胶水、热熔或者注塑等方式粘接为一体。
在一些可能的实施方式中，配重件118设置于振膜116的侧边。
可以理解的，如图1和图3所示，配重件118设置于振膜116的侧边。其中，配重件118可以设置在振膜116的一侧，并具体设置在振膜116朝向发声器件110的一侧、或者配重件118可以设置在振膜116背离发声器件110的一侧(图中未示出这一情况)。此外，配重件118也可以设置在振膜116的两侧。
在一些可能的实施方式中，如图1和图3所示，配重件118位于振膜116的中部。
可以理解的，配重件118位于振膜116的中部。这样，使得配重件118在振膜116的中心调节振膜116的振动频率。并且，并配重件118设置在振膜116的中心，在振膜116的周向上使得振膜116的重量分配平均，避免振膜116振动过程中出现偏振的现象。
在一些可能的实施方式中，第一出音口122和第二出音口124位于设备本体102不同的端面上。
可以理解的，前腔106和后腔108位于安装腔104相背的两侧，并且
第一出音口122和第二出音口124位于设备本体102不同的端面上，第一出音口122设置在设备本体102的前侧端面，第二出音口124设置在设备本体102的背部端面。这样，第一出音口122能够作为电子设备100的前侧出音口使用，第二出音口124能够作为电子设备100的后侧出音口使用。
在一些可能的实施方式中，如图2和图4所示，设备本体102还包括支架120，后腔108设置于支架120上，消声器件114与支架120相连接。
可以理解的，设备本体102还包括支架120。其中，支架120设置在电子设备100的内部，支架120用于安装电路板等相关部件。此外，支架120上设置有上述后腔108，并将消声器件114设置在支架120上，进而保证消声器件114在电子设备100内部的稳定连接。
在一些可能的实施方式中，如图1和图3所示，振膜116与支架120为一体式结构。
可以理解的，消声器件114与支架120为一体式结构。具体地，消声器件114的振膜116与支架120为一体式结构。这样，一方面能够保证消声器件114在支架120上的稳定连接，另一方面能够保证振膜116与支架120的连接处并存在缝隙，进而使得消声器件114能够密封后腔108，进而避免外部水汽或杂质通过后腔108进入到安装腔104内，以保证安装腔104内发声器件110的使用安全。
具体地，振膜116与支架120可以通过粘接剂、注塑等方式装配为一体。支架120装配在电子设备100的内部，并且前腔106和后腔108相隔离。
在一些可能的实施方式中，如图1和图3所示，设备本体102还包括盖板126和屏幕组件128；第二出音口124设置于盖板126上，前腔106和第一出音口122设置于屏幕组件128上。
可以理解的，设备本体102还包括盖板126和屏幕组件128。其中，屏幕组件128设置在电子设备100的前端面，盖板126设置在电子设备100的后端面，并可作为电池后盖使用。此外，上述前腔106和第一出音口122设置在屏幕组件128上，上述第二出音口124设置在盖板126上。
在一些可能的实施方式中，如图2和图5所示，第二出音口124的数量为一个。
可以理解的，第二出音口124的数量可以设置为一个。此时，该第二出音口124通过后腔108连通于发声器件110的后音腔。此外，第二出音口124的形状和开口面积可根据实际需要进行设计。例如，第二出音口124可以为条形口或圆形口。
在一些可能的实施方式中，如图4、图6和图7所示，第二出音口124的数量为至少两个，至少两个第二出音口124同时连通于后腔108。
可以理解的，第二出音口124的数量可以设置为至少两个。此时，至少两个第二出音口124同时通过后腔108连通于发声器件110的后音腔。此外，第二出音口124的形状和开口面积可根据实际需要进行设计。例如，第二出音口124可以为条形口或圆形口。
具体地，在设置有一个第二出音口124的情况下，可以设置第二出音口124的开口面积相对较大；在设置有至少两个第二出音口124的情况下，可以设置第二出音口124的开口面积相对较小。
具体地，在设置有至少两个第二出音口124的情况下，至少两个第二出音口124间隔分布，并且可以在电子设备100的宽度方向上分布，也可以是在电子设备100的长度方向上分布。
在一些可能的实施方式中，如图1和图3所示，发声器件110与安装腔104的内壁相接触，前腔106和后腔108通过发声器件110相隔离。
可以理解的，发声器件110与安装腔104的内壁相接触，以使得前腔106和后腔108通过发声器件110相隔离开。也即，前腔106和后腔108位于发声器件110相对的两侧，并且前腔106与后腔108不连通。这样，发声器件110前音腔产生的第一声波进入到前腔106内，消声器件114在后腔108内气流的作用下振动并产生第二声波，进而保证了第二声波与第一声波的相位相反，以使得第二声波能够用于抵消至少一部分第一声波。
在一些可能的实施方式中，如图2和图4所示，发声器件110可采用
受话器。关于受话器的具体结构，在此并不展开论述，本领域技术人员是可以理解的。
在一些可能的实施方式中，发声器件110的振源112包括振动膜和驱动件，驱动件能够驱动振动膜产生振动。此外，驱动件可采用球顶。振动膜位于驱动件朝向前腔106的一侧。
此外，如图1和图3所示，发声器件110还包括安装件130，安装件130设置在支架120上，位于安装腔104内。其中，安装件130与支架120密封连接，以保证前腔106和后腔108不连通。
随着移动智能化时代的到来，手机等电子设备作为重要智能通讯工具，承担每天对外通讯交流的任务。电子设备中受话器等发声器件起着传递通话信息的作用。发声器件工作时，一部分声波传递到人耳，一部分声波传播到外部空间。在发声器件通讯效果的评估中，防止声波泄露，对通讯内容进行保密是消费者关注的重要内容。
如图1和图3所示，本申请提出了一种电子设备100，在电子设备100的后腔108内设置有消声器件114，消声器件114包括振膜116和配重件118等部件。在发声器件110工作时，后腔108内的振动的气流够引起消声器件114振动，使得消声器件114产生第二声波，并且第二声波的相位与第一声波的相位相反，使得第二声波能够用户抵消一部分第一声波，达到有源降噪的效果。
进一步地，如图1和图3所示，本申请在实现通话防泄漏的同时，通过消声器件114与电子设备100的支架120一体化成型，保证了电子设备100的密封性。进一步地，可通过对振膜116顺性、配重件118密度及阻尼等的调节，使该过程的方案设计更为可控。
因此，如图1和图3所示，本申请能够减小了发声器件110工作时的声波泄漏，并且保证电子设备100的密封性，保护电子设备100内部的相关元器件。此外，消声器件114可调节，能够根据实际需要和发声器件110进行调节。并且，本申请对发声器件110的后音腔的要求较低，有利于电
子设备100的堆叠设计。
具体地，如图5、图6和图7所示，从电子设备100的正面到电子设备100的背面，本申请实施例提出的电子设备100包括屏幕组件128、第一出音口122、前腔106、发声器件110、发声器件110、后腔108、消声器件114、支架120、盖板126和第二出音口124等部件。
具体地，在图5所示的电子设备100中，第二出音口124的数量为一个；在图6和图7所示的电子设备100中，第二出音口124的数量为两个。
具体地，在图5和图6所示的电子设备100中，第二出音口124为条形口；在图7所示的电子设备100中，第二出音口124为圆形口。
其中，如图1和图3所示，消声器件114包括振膜116和配重件118，振膜116与支架120为一体式结构，振膜116正对发声器件110的背部，通过盖板126所开设的第二出音口124出声。配重件118位于振膜116的中心，并与振膜116粘接；振膜116与支架120一体化成型。此外，第二出音口124可以设置一个或两个以上，第二出音口124的形状可根据实际需求进行设计。
如图1和图3所示，在发声器件110工作时，发声器件110推动前腔106和后腔108内的空气振动，进而在前腔106内产生第一声波，在后腔108内产生第二声波，并且第一声波与第二声波的相位相反。
此外，后腔108内的气流能够引起消声器件114振动并产生第二声波，并且第二声波的相位与第一声波的相位相反。这样，在电子设备100总的声场内，消声器件114产生的第二声波能够抵消至少部分第一声波，在总声场内产生相消性干涉，从而减小了发声器件110工作时的声音泄漏。
具体地，如图2和图4所示，配重件118与振膜116通过胶水、热熔或者注塑等方式粘接为一体，配重件118可放置在振膜116两侧。此外，消声器件114与支架120通过粘接剂、注塑等手段装配为一体，支架120装配在整机中，需要保证发声器件110的后音腔与振膜116之间没有其他泄露。
此外，如图1和图3所示，前腔106和后腔108的结构设计，可以通过仿真手段确认最为合适的长宽高等尺寸，用来实现最优的第一声波和第二声波的抵消，保证声波泄露做到最小。从外，振膜116上的配重件118可以通过不同的材料来控制质量，从而调节振膜116的振动频率，可以利于调试，针对性的降低某些频段的漏音。
具体地，如图1和图3所示，前腔106和后腔108完全隔离。此外，配重件118的位置位于振膜116中心，以减少消声器件114的偏振现象。此外，消声器件114的辐射面出口设计为正面辐射声波。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。
Claims (11)
- 一种电子设备，包括：设备本体，所述设备本体包括安装腔、前腔和后腔，所述前腔和所述后腔位于所述安装腔相背的两侧，所述安装腔分别连通于所述前腔的第一出音口和所述后腔的第二出音口；发声器件，设置于所述安装腔内；消声器件，设置于所述后腔内。
- 根据权利要求1所述的电子设备，其中，所述发声器件包括振源；在所述振源的振动方向上，所述前腔和所述后腔位于所述振源相背的两侧。
- 根据权利要求1所述的电子设备，其中，所述消声器件密封所述后腔。
- 根据权利要求1所述的电子设备，其中，所述消声器件包括：振膜，设置于所述后腔内，并能够在所述发声器件的作用下振动。
- 根据权利要求4所述的电子设备，其中，所述消声器件还包括：配重件，设置于所述振膜上，用于调节所述振膜的振动频率。
- 根据权利要求5所述的电子设备，其中，所述配重件设置于所述振膜的侧边或者中部。
- 根据权利要求1至6中任一项所述的电子设备，其中，所述第一出音口和所述第二出音口位于所述设备本体不同的端面上。
- 根据权利要求1至6中任一项所述的电子设备，其中，所述设备本体还包括支架，所述后腔设置于所述支架上，所述消声器件与所述支架相连接。
- 根据权利要求1至6中任一项所述的电子设备，其中，所述设备本体还包括盖板和屏幕组件；所述第二出音口设置于所述盖板上，所述前腔和所述第一出音口设置于所述屏幕组件上。
- 根据权利要求1至6中任一项所述的电子设备，其中，所述第二出音口的数量为一个；或所述第二出音口的数量为至少两个，至少两个所述第二出音口同时连通于所述后腔。
- 根据权利要求1至6中任一项所述的电子设备，其中，所述发声器件与所述安装腔的内壁相接触，所述前腔和所述后腔通过所述发声器件相隔离。
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| CN111343552A (zh) * | 2020-03-27 | 2020-06-26 | 苏州缪斯谈谈科技有限公司 | 一种受话器及终端 |
| CN212064357U (zh) * | 2020-03-27 | 2020-12-01 | 苏州缪斯谈谈科技有限公司 | 一种受话器及终端 |
| WO2021196795A1 (en) * | 2020-03-31 | 2021-10-07 | Shenzhen Voxtech Co., Ltd. | Systems, methods, and devices for acoustic output |
| CN114615592A (zh) * | 2022-03-10 | 2022-06-10 | 维沃移动通信有限公司 | 电子设备 |
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| CN111343552A (zh) * | 2020-03-27 | 2020-06-26 | 苏州缪斯谈谈科技有限公司 | 一种受话器及终端 |
| CN212064357U (zh) * | 2020-03-27 | 2020-12-01 | 苏州缪斯谈谈科技有限公司 | 一种受话器及终端 |
| WO2021196795A1 (en) * | 2020-03-31 | 2021-10-07 | Shenzhen Voxtech Co., Ltd. | Systems, methods, and devices for acoustic output |
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