CN110971732B - Electronic terminal - Google Patents
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- CN110971732B CN110971732B CN201911187766.4A CN201911187766A CN110971732B CN 110971732 B CN110971732 B CN 110971732B CN 201911187766 A CN201911187766 A CN 201911187766A CN 110971732 B CN110971732 B CN 110971732B
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- sound
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- guide hole
- cavity
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- 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
- H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
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- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses an electronic terminal, comprising: the shell, the shell includes the backshell, connects the peripheral frame of backshell and connect in the preceding shell of frame, first phonate hole with second phonate hole is located on the same side of frame. The sound production device is accommodated in the shell, a first sound guide hole and a second sound guide hole are formed in the sound production device, and the first sound guide hole is communicated with the second sound guide hole through the first sound outlet hole and the second sound outlet hole in the shell. The electronic terminal provided by the invention makes full use of the two sound outlet holes, improves the low-frequency loudness of the whole machine, improves the tone quality and brings better user experience.
Description
Technical Field
The invention relates to the technical field of loudspeakers, in particular to an electronic terminal.
Background
Electronic terminals such as mobile phones are ubiquitous in people's daily life. A loudspeaker is an important acoustic component thereof, which is a transducer device that converts electrical signals into acoustic signals. The conventional speaker includes a housing, and a magnetic circuit system and a vibration system provided in the housing.
In order to pursue symmetrical and attractive appearance in the existing whole machine application, two rows of sound outlet holes are generally designed at positions corresponding to sound outlet holes of a loudspeaker, and only one side of the sound outlet holes is actually used for sound outlet, and the sound outlet holes at the other side are actually inner-closed false holes. The sound outlet hole for sound production is communicated with the front sound cavity of the sound production monomer in the sound production device, and sound waves generated by vibration of the vibrating diaphragm are radiated to the outside. However, if the sound outlet on the other side can be fully utilized, the sound loudness of the sound generating device will be improved.
Therefore, there is a need for a new type of electronic terminal.
Disclosure of Invention
In view of the above problems, the present invention provides an electronic terminal that can make full use of two sound holes on a housing, improve the low-frequency loudness of the whole terminal, and improve the sound quality.
In order to solve the above technical problem, an electronic terminal provided by the present invention includes: the shell is provided with a first sound outlet hole and a second sound outlet hole; the sound generating device is accommodated in the shell, a first sound guide hole and a second sound guide hole are formed in the sound generating device, and the first sound guide hole and the second sound guide hole are respectively communicated with the first sound outlet hole and the second sound outlet hole in the shell; the shell comprises a rear shell, a frame and a front shell, wherein the frame is connected with the periphery of the rear shell, the front shell is connected with the frame, and the first sound outlet and the second sound outlet are formed in the same side face of the frame.
Preferably, the frame includes two symmetrical short sides, and the first sound outlet and the second sound outlet are symmetrically disposed on one of the short sides.
Preferably, the sound generating device comprises a shell and a sound generating unit accommodated and fixed in the shell, the sound generating unit divides the space in the shell into a front sound cavity and a rear sound cavity, and the shell is provided with a first sound guide hole communicated with the front sound cavity and a second sound guide hole communicated with the rear sound cavity;
the shell further comprises an inverter tube, one end of the inverter tube is communicated with the rear sound cavity, and the other end of the inverter tube is communicated with the second sound guide hole.
Preferably, the phase inversion tube is arranged in the rear acoustic cavity;
or the wall of the phase-inversion tube is connected with the wall of the rear acoustic cavity.
Preferably, the casing comprises a side wall surrounding the rear sound cavity, and a partition wall located in the rear sound cavity, wherein the inverter tube is formed between the partition wall and the side wall;
alternatively, the housing includes a side wall surrounding a rear acoustic chamber, and a distance between two side walls opposed to each other at a distal end of the rear acoustic chamber is narrowed to constitute the inverter tube.
Preferably, sound generating mechanism include the casing with accept in first sound production monomer and second sound production monomer in the casing, first sound production monomer with second sound production monomer will space separation in the casing is for first preceding sound chamber, preceding sound chamber of second and back sound chamber, first leading the sound hole with the second lead the sound hole respectively with first preceding sound chamber with the preceding sound chamber of second communicates.
Preferably, the sound generating device further comprises an annular first sealing element, wherein the first sealing element is arranged between the frame and the sound generating device and is used for sealing and connecting the first sound outlet and the first sound guide hole; and the second sealing element is arranged between the frame and the sound generating device and is used for sealing and connecting the second sound outlet and the second sound guide hole.
The first sealing element and the second sealing element are made of foam or silica gel.
Preferably, the cross section area of the inverter tube is 10-40% of the effective radiation area of the sound-emitting single diaphragm.
Preferably, the first sound outlet and the second sound outlet are an integral macro-pore or a micro-pore group, and the pore diameter of a single micro-pore in the micro-pore group is 0.8 mm-1.5 mm.
Preferably, the resonant frequency f of the rear acoustic cavity and the phase inverter tubebWith the resonance frequency f of the sound-generating unit0The ratio of (a) is in a numerical range of 1/3-1.4.
After the technical scheme is adopted, the invention has the beneficial effects that: the shell of the electronic terminal is provided with a first sound outlet and a second sound outlet, the sound generating device accommodated in the shell is provided with a first sound guide hole and a second sound guide hole, and the first sound guide hole and the second sound guide hole are respectively communicated with the first sound outlet and the second sound outlet. The electronic terminal provided by the invention makes full use of the two sound outlet holes designed on the shell, improves the low-frequency loudness of the whole machine, improves the tone quality and brings better user experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an exploded view of an electronic terminal according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electronic terminal according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of an electronic terminal according to an embodiment of the present invention;
fig. 4 is an exploded schematic view of an electronic terminal according to a second embodiment of the present invention;
fig. 5 is a cross-sectional view of an electronic terminal according to a second embodiment of the present invention.
Fig. 6 is a comparison graph of frequency response curves of the electronic terminal under the condition that the electronic terminal and the rear acoustic cavity are closed according to the first embodiment of the present invention.
In the figure: 1. the shell, 11, first phonate hole, 12, second phonate hole, 21, epitheca, 22, inferior valve, 211, first phonate hole, 212, second phonate hole, 213, inverted tube, 3, phonate monomer, 31, first phonate monomer, 32, second phonate monomer, 4, preceding vocal cavity, 41, first preceding vocal cavity, 42, second preceding vocal cavity, 5, back vocal cavity.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
According to one aspect of the invention, the invention provides an electronic terminal comprising: the shell 1, shell 1 includes the backshell, connects the peripheral frame of backshell and connect in the preceding shell of frame be equipped with first phonate hole 11 and second phonate hole 12 on the same side of frame. Specifically, the frame includes two symmetrical short sides, and the first sound outlet 11 and the second sound outlet 12 are symmetrically disposed on one of the short sides. The electronic terminal further comprises a sound generating device, the sound generating device is contained in the shell 1, a first sound guide hole 211 and a second sound guide hole 212 are formed in the sound generating device, and the first sound guide hole 211 is communicated with the second sound guide hole 212 respectively through a first sound outlet hole 11 and a second sound outlet hole 12 in the shell. Two phonate holes of electron terminal make full use of have promoted complete machine low frequency loudness and have improved tone quality, bring better user experience.
Specifically, as shown in fig. 1-3, the sound generating device includes a housing and a sound generating unit 3 accommodated and fixed in the housing, the housing includes an upper shell 21 and a lower shell 22, the sound generating unit 3 includes a vibration system and a magnetic circuit system, the vibration system includes a diaphragm and a voice coil, and the magnetic circuit system forms a magnetic gap accommodating the voice coil. After receiving an externally changed alternating current signal, the voice coil is driven by magnetic field force to perform reciprocating cutting on magnetic force lines, so that the vibrating diaphragm is driven to vibrate and sound.
The sound generating unit 3 divides the space in the shell into a front sound cavity and a rear sound cavity, a front sound cavity 4 is formed between one side of the diaphragm, which is far away from the magnetic circuit system, and the upper shell 21, the front sound cavity 4 is communicated with the first sound guide hole 211, and sound waves generated by the diaphragm are radiated to the outside through the front sound cavity 4 and the first sound outlet hole 11 on the shell 1. A rear acoustic cavity 5 is formed between one side of the diaphragm close to the magnetic circuit system and the lower shell 22. In this embodiment, the housing further includes an inverter tube 213, and one end of the inverter tube 213 is communicated with the rear acoustic cavity 5, and the other end is communicated with the second sound guide hole 212. The sound wave radiated from the rear side of the diaphragm in the sound generating unit 3 is transmitted to the rear sound cavity 5 and is radiated to the outside through the second sound outlet 12 via the phase inversion tube 213. In this embodiment, the sound energy that the sound cavity 4 derived before and the sound energy that the sound cavity 5 derived after produced the stack effect, have promoted complete machine low frequency loudness and improve tone quality, bring better user experience.
Specifically, the inverter tube 213 is disposed in the rear acoustic cavity 5 or a tube wall of the inverter tube 213 is connected to a cavity wall of the rear acoustic cavity 5.
Specifically, the case includes a side wall surrounding the rear acoustic chamber 5, and a partition wall located inside the rear acoustic chamber 5, the partition wall and the side wall constituting the inverter tube 213 therebetween or the case includes a side wall surrounding the rear acoustic chamber 5, and a distance between two side walls opposing at a distal end of the rear acoustic chamber 5 is narrowed to constitute the inverter tube 213.
Specifically, the sectional area of the inverter tube 213 is generally designed to be about 10-40% of the effective radiation area of the sound-generating single body 3 diaphragm, and the larger the sectional area is, the higher the low-frequency radiation efficiency is, but the longer the tube length is. The length L of inverter tube 213 is typically calculated by the following equation:
wherein: f. of0Is the tuning frequency of the inverter tube; v is the effective volume of the rear acoustic cavity; s is the cross-sectional area of the inverter tube.
Particularly, the invention can obviously enhance the bass effect of a specific frequency band of low frequency, and can realize f by adjusting the size of the inverter tube 213bIn which fbThe resonant frequency of the back acoustic chamber 5 and inverter tube 213. Can be adjusted by adjusting fbAnd f0(f0Resonance frequency of a single body) to achieve an adjustment of a specific frequency band of a low frequency, wherein fbAnd f0The following relationship is satisfied: f. ofbAnd f0The ratio of (A) is in a numerical range of 1/3-1.4, so that the enhancement of the required frequency band is realized.
Fig. 6 is a graph comparing frequency response curves of the electronic terminal in the closed state of the rear acoustic cavity 5 and the electronic terminal in this embodiment. Wherein, the solid curve is the frequency response curve of the electronic terminal designed by the embodiment, and the dotted curve is the frequency response curve of the rear acoustic cavity in the closed state. Wherein the abscissa is frequency and the ordinate is characteristic sensitivity. As can be seen from the figure, after the rear acoustic cavity 5 is communicated with the outside by arranging the inverter tube 213, the sensitivity of the electronic terminal provided by the embodiment at the low-frequency start-up band is obviously improved.
As shown in fig. 3 to 4, in another embodiment of the present invention, the sound generating device includes a housing, and a first sound generating unit 31 and a second sound generating unit 32 accommodated in the housing, where the first sound generating unit 31 and the second sound generating unit 32 are respectively disposed corresponding to the first sound outlet 11 and the second sound outlet 12, a space formed between a side of the diaphragm of the first sound generating unit 31 away from the magnetic circuit and the upper housing 21 is a first front sound cavity 41, a space formed between a side of the diaphragm of the second sound generating unit 32 away from the magnetic circuit and the upper housing 21 is a second front sound cavity 42, and a space formed by a side of the diaphragm of the first sound generating unit 31 close to the magnetic circuit and a side of the diaphragm of the second sound generating unit 32 close to the magnetic circuit and the lower housing 22 is a rear sound cavity. The first sound guiding hole 211 and the second sound guiding hole 212 communicate with the first front sound chamber 41 and the second front sound chamber 42, respectively. The sound wave generated by the diaphragm of the first sound generating unit 31 is radiated to the outside through the first front sound cavity 41 and the first sound outlet 11 on the housing 1, and the sound wave generated by the diaphragm of the second sound generating unit 32 is radiated to the outside through the second front sound cavity 42 and the second sound outlet 12 on the housing 1. Therefore, the sound loudness of the electronic terminal is improved through the cooperative work of the two sounding monomers. In addition, because of the arrangement of the two sound outlet holes, even if part of the sound outlet holes are blocked, sound can still be conducted out from the unblocked part of the sound outlet holes, thereby improving the sound production reliability of the electronic terminal.
Specifically, the electronic terminal is further provided with an annular first sealing element, the first sealing element is arranged between the frame and the sound generating device, and the first sound outlet hole and the first sound guide hole are connected in a sealing mode. And the second sealing element is arranged between the frame and the sound generating device and is used for sealing and connecting the second sound outlet and the second sound guide hole. The first sealing element and the second sealing element are made of foam or silica gel, and are not particularly limited in the invention.
Specifically, the first sound outlet 11 and the second sound outlet 12 may be an integral elliptical macro-hole or a micro-hole group, in this embodiment, the first sound outlet 11 and the second sound outlet 12 are both composed of a row of micro-holes, the aperture of each micro-hole is 0.8 mm-1.5 mm, and the sound emitted by the speaker is low in high frequency and moderate in volume at the sound outlet within this aperture range. Furthermore, the shape of the micropores is round or square, so that the sound of the sound production device is not sharp, and the sound is more pleasant.
Specifically, in order to avoid pollutants such as particle impurity from going into the shell from the phonate hole, still be provided with the dust screen, the dust screen is located the inner wall of frame covers first phonate hole with the second phonate hole, and then reduces the influence of impurity to the sound generating mechanism performance.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (6)
1. An electronic terminal, comprising:
the shell is provided with a first sound outlet hole and a second sound outlet hole;
the sound generating device is accommodated in the shell, a first sound guide hole and a second sound guide hole are formed in the sound generating device, and the first sound guide hole and the second sound guide hole are respectively communicated with the first sound outlet hole and the second sound outlet hole in the shell;
the shell comprises a rear shell, a frame connected with the periphery of the rear shell and a front shell connected with the frame, and the first sound outlet and the second sound outlet are arranged on the same side face of the frame;
the sound generating device comprises a shell and a sound generating single body accommodated and fixed in the shell, the sound generating single body divides the space in the shell into a front sound cavity and a rear sound cavity, and the shell is provided with a first sound guide hole communicated with the front sound cavity and a second sound guide hole communicated with the rear sound cavity; the shell further comprises an inverter tube, one end of the inverter tube is communicated with the rear sound cavity, and the other end of the inverter tube is communicated with the second sound guide hole;
the sectional area of the inverter tube is 10-40% of the effective radiation area of the sound production single vibrating diaphragm;
resonant frequency f of the rear acoustic cavity and the phase inverter tubebWith the resonance frequency f of the sound-generating unit0The ratio of (a) is in a numerical range of 1/3-1.4.
2. An electronic terminal according to claim 1, wherein the frame comprises two symmetrical short sides, and the first sound outlet and the second sound outlet are symmetrically disposed on one of the short sides.
3. An electronic terminal according to claim 1, wherein said phase inverter tube is disposed within said rear acoustic cavity;
or the wall of the phase-inversion tube is connected with the wall of the rear acoustic cavity.
4. An electronic terminal according to claim 3, wherein said housing includes a side wall surrounding a rear acoustic cavity, and a partition wall located within the rear acoustic cavity, said partition wall and said side wall forming said inverter tube therebetween;
alternatively, the housing includes a side wall surrounding a rear acoustic chamber, and a distance between two side walls opposed to each other at a distal end of the rear acoustic chamber is narrowed to constitute the inverter tube.
5. An electronic terminal according to claim 2, further comprising:
the annular first sealing element is arranged between the frame and the sound generating device and is used for sealing and connecting the first sound outlet and the first sound guide hole;
the annular second sealing element is arranged between the frame and the sound generating device and is used for sealing and connecting the second sound outlet and the second sound guide hole;
the first sealing element and the second sealing element are made of foam or silica gel.
6. An electronic terminal according to claim 1, wherein the first sound outlet and the second sound outlet are an integral macro-hole or a micro-hole group, and the aperture of a single micro-hole in the micro-hole group is 0.8mm to 1.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187766.4A CN110971732B (en) | 2019-11-28 | 2019-11-28 | Electronic terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911187766.4A CN110971732B (en) | 2019-11-28 | 2019-11-28 | Electronic terminal |
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| Publication Number | Publication Date |
|---|---|
| CN110971732A CN110971732A (en) | 2020-04-07 |
| CN110971732B true CN110971732B (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911187766.4A Active CN110971732B (en) | 2019-11-28 | 2019-11-28 | Electronic terminal |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114257672B (en) * | 2020-09-22 | 2023-07-14 | 华为终端有限公司 | Sound production device and electronic equipment |
| CN112261543A (en) * | 2020-10-23 | 2021-01-22 | 瑞声新能源发展(常州)有限公司科教城分公司 | Electronic equipment and speaker module thereof |
| CN218387849U (en) * | 2022-07-26 | 2023-01-24 | 瑞声光电科技(常州)有限公司 | Loudspeaker and electronic equipment capable of being curled |
| CN115826246A (en) * | 2022-12-19 | 2023-03-21 | 瑞声声学科技(深圳)有限公司 | Intelligent wearable glasses |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050205350A1 (en) * | 2004-03-18 | 2005-09-22 | Bill Yang | [speaker module frame, speaker module therewith, and electronic device with speaker module] |
| CN201590838U (en) * | 2009-12-23 | 2010-09-22 | 广东欧珀移动通信有限公司 | Mobile phone sound |
| CN208691299U (en) * | 2018-05-25 | 2019-04-02 | 深圳市鼎达科技有限公司 | A kind of Mobile phone horn component and mobile phone |
| CN110113453A (en) * | 2019-04-24 | 2019-08-09 | 维沃移动通信有限公司 | A kind of mobile terminal |
-
2019
- 2019-11-28 CN CN201911187766.4A patent/CN110971732B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050205350A1 (en) * | 2004-03-18 | 2005-09-22 | Bill Yang | [speaker module frame, speaker module therewith, and electronic device with speaker module] |
| CN201590838U (en) * | 2009-12-23 | 2010-09-22 | 广东欧珀移动通信有限公司 | Mobile phone sound |
| CN208691299U (en) * | 2018-05-25 | 2019-04-02 | 深圳市鼎达科技有限公司 | A kind of Mobile phone horn component and mobile phone |
| CN110113453A (en) * | 2019-04-24 | 2019-08-09 | 维沃移动通信有限公司 | A kind of mobile terminal |
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| CN110971732A (en) | 2020-04-07 |
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