CN204906666U - Loudspeaker module group - Google Patents
Loudspeaker module group Download PDFInfo
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- CN204906666U CN204906666U CN201520565735.9U CN201520565735U CN204906666U CN 204906666 U CN204906666 U CN 204906666U CN 201520565735 U CN201520565735 U CN 201520565735U CN 204906666 U CN204906666 U CN 204906666U
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Abstract
The utility model discloses a loudspeaker module group, which comprises an outer shell, loudspeaker unit, microphone unit and FPCB have been accommodated in the shell, loudspeaker unit includes vibration system and magnetic circuit, vibration system including combining vibrating diaphragm and voice coil loudspeaker voice coil together, the circuit that the voice coil loudspeaker voice coil passes through on the FPCB is connected with the outside circuit electricity of module, the microphone unit is fixed set up in on the inner wall of shell. The utility model discloses set up the microphone unit in that loudspeaker module group is inside, utilize the microphone unit to survey the size of acoustic pressure, can further calculate the change of amplitude through the acoustic pressure, and then make external circuit detect the amplitude enable of loudspeaker diaphragm through the acoustic pressure signal that detects microphone output.
Description
Technical field
The utility model belongs to acoustic-electric energy-conversion technique field, and particularly, the utility model relates to a kind of loud speaker module.
Background technology
Loud speaker as a kind of microphone device for electronic products such as mobile phone, TV, computers, be widely used in people daily production and life in.Loud speaker common at present mainly contains coil-moving speaker, electromagnetic loudspeaker, condenser loudspeaker, piezo-electric loudspeaker etc., wherein coil-moving speaker because of have making relatively simple, with low cost, have the advantages such as good low frequency sounding performance, and be able to extensive use.Because loud speaker realizes the conversion of the signal of telecommunication to voice signal by diaphragm oscillations promotion surrounding air vibration, when amplitude variations is very large, each parts of inside loudspeakers have the risk of wiping and touching, for coil-moving speaker, the wiping that voice coil loudspeaker voice coil and frame such as may occur when vibrating diaphragm amplitude is excessive is touched, the wiping of voice coil loudspeaker voice coil and washer or magnet is touched, the wiping of vibrating diaphragm and shell is touched etc., these are wiped to touch and all will cause the distortion of voice signal, affect sense of hearing and the tonequality of loud speaker, this illustrates that existing loud speaker cannot continue to ensure sense of hearing and the tonequality of high-quality muchly, and these wipe the reliability yield that the existence of touching also is difficult to ensure product, prolongation along with the time also can affect the useful life of loud speaker.Based on such problem, be currently suggested the input signal that can regulate loud speaker according to vibrating diaphragm amplitude, to make vibrating diaphragm amplitude be positioned at the control program that the limit range that any wiping is touched does not occur all the time, for this reason, the detection how realizing vibrating diaphragm amplitude has just become current problem demanding prompt solution.
Utility model content
The purpose of this utility model is to provide a kind of new loud speaker module, can realize detection to vibrating diaphragm amplitude by external circuit.
The utility model proposes a kind of loud speaker module, comprise shell, in described shell, contain loudspeaker unit, microphone unit and FPCB; Described loudspeaker unit involving vibrations system and magnetic circuit system, described vibrational system comprises the vibrating diaphragm and voice coil loudspeaker voice coil that combine, and described voice coil loudspeaker voice coil is electrically connected by the circuit of the circuit on FPCB with module outside; Described microphone unit is fixedly installed on the inwall of described shell, and is electrically connected with the circuit of module outside.
Preferably, whole module inner chamber is divided into the front operatic tunes and the rear operatic tunes by described loudspeaker unit, and described microphone unit is arranged in the described rear operatic tunes.
Preferably, described microphone unit is electrically connected with the circuit of module outside by another circuit on described FPCB.
Preferably, described shell is made up of pcb board at least partly, and described microphone unit is electrically connected with the circuit of module outside by the circuit on described pcb board.
Preferably, described shell is electroplate with conducting wire, described microphone unit is electrically connected with the circuit of module outside by described conducting wire.
Preferably, the side of described shell is provided with module phonate hole.
Preferably, described shell comprises shell component and lower shell component, and described module phonate hole is arranged at the sidewall of shell component or is arranged at the sidewall of lower shell component.
Preferably, described shell comprises shell component and lower shell component, and described module phonate hole is formed by upper shell component and the cooperation of lower shell component.
Preferably, described loud speaker module is coil-moving speaker module.
The utility model arranges a microphone unit in the inside cavity of existing loud speaker module, microphone unit is utilized to detect the size of acoustic pressure, can be calculated the change of amplitude further by acoustic pressure, and then the amplitude making external circuit detect the diaphragm of loudspeaker by the sound pressure signal detecting microphone output becomes possibility.When amplitude exceedes the secure threshold preset, external circuit regulates the input signal of loud speaker to make amplitude no longer exceed secure threshold, thus realizes the high-fidelity of loud speaker and the sense of hearing of high-quality.
Accompanying drawing explanation
What form a part for specification drawings describes embodiment of the present utility model, and together with the description for explaining principle of the present utility model.
Fig. 1 is a kind of cross-sectional schematic implementing structure according to the utility model loud speaker;
Fig. 2 is the decomposing schematic representation of loud speaker shown in Fig. 1;
Description of reference numerals:
100-loudspeaker unit, 101-vibrating diaphragm body, 102-vibrating diaphragm reinforcement part;
200-microphone unit;
300-FPCB, 301-FPCB pad, 302-shell fragment;
The operatic tunes before 600-, 601-module phonate hole, the operatic tunes after 700-;
1-shell, 401-upper cover, 402-backing plate, 403-upper shell, shell component under 500-.
Embodiment
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.
The technology and equipment known for person of ordinary skill in the relevant may not discuss in detail, but in the appropriate case, described technology and equipment should be regarded as a part for specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
The vibrating member that the utility model exists based on existing loud speaker can wipe the problem of touching with static element when vibrating diaphragm amplitude is excessive, provide a kind of loud speaker modular structure through improving, so that detection to the vibrating diaphragm amplitude of the utility model loud speaker can be realized by external circuit.
Shown in figure 1 and Fig. 2, the embodiment of the utility model loud speaker module is comprised in shell 1, shell 1 and contains loudspeaker unit 100, microphone unit 200 and FPCB300, FPCB300 and be electrically connected with the circuit of module outside by the pad 301 that shell 1 is arranged.
Loudspeaker unit 100 is coil-moving speaker, involving vibrations system and magnetic circuit system.Vibrational system comprises vibrating diaphragm and is fixed on the voice coil loudspeaker voice coil of vibrating diaphragm side; Vibrating diaphragm comprises vibrating diaphragm body 101 and vibrating diaphragm reinforcement part 102, and vibrating diaphragm body 101 comprises the fixed part fixing with shell 1 of outermost, with the central area that vibrating diaphragm reinforcement part 102 is fixing, and the ring portion of connecting portion and central area.Voice coil loudspeaker voice coil is connected with the circuit on FPCB300 by shell fragment 302, and then is electrically connected with the circuit of module outside.
Magnetic circuit system comprises centring magnet, limit magnet, center washer, limit washer, can also comprise frame; Be provided with magnetic gap between the integrative-structure of the integrative-structure of centring magnet, center washer and limit magnet, limit washer, the voice coil loudspeaker voice coil of vibrational system is arranged in magnetic gap.
Whole module inner chamber is divided into the front operatic tunes 600 and the rear operatic tunes 700 by loudspeaker unit 100, and the front operatic tunes 600 is communicated with module phonate hole 601, and the rear operatic tunes 700 seals and arranges.
Microphone unit 200 is arranged in the rear operatic tunes 700, and is fixedly installed on the inwall of shell 1, and microphone unit 200 is electrically connected with the circuit of module outside the voltage signal arrived with output detections.Due to the rear operatic tunes for sealing is arranged, the sound pressure signal that microphone unit records more can accurately embody the amplitude variations of vibrating diaphragm.In one embodiment, microphone unit 200 can be electrically connected with the circuit of module outside by another circuit on FPCB300; In another embodiment, shell 1 is made up of pcb board at least partly, and microphone unit 200 can be electrically connected with the circuit of module outside by the circuit on the pcb board of shell 1; Or in another embodiment, can electroplate conducting wire on shell 1, microphone unit 200 is electrically connected by the circuit of conducting wire with module outside.
Shell 1 in the present embodiment comprises the lower shell component 500 and upper shell component that combine, and upper shell component comprises upper cover 401, backing plate 402, and upper shell 403.The loud speaker module of the present embodiment is that side goes out acoustic form, and the side of shell 1 is provided with module phonate hole 601.In one embodiment, module phonate hole 601 can be arranged at the sidewall of shell component; In another embodiment, module phonate hole 601 can be arranged at the sidewall of lower shell component; Or in another embodiment, module phonate hole 601 can be formed by upper shell component and the cooperation of lower shell component.
The utility model arranges a microphone unit in the inside cavity of existing loud speaker module, the size of acoustic pressure when this microphone unit is connected with external circuit to detect speaker operation in real time, the change of amplitude can be calculated further by acoustic pressure, when amplitude exceedes presetting secure threshold, the input signal of voice coil loudspeaker voice coil is regulated by external circuit, such as gain is regulated to reduce the input signal regulating voice coil loudspeaker voice coil by power amplifier, thus obtain power amplifier parameter corresponding when an amplitude does not exceed secure threshold, loud speaker is under the setting of this power amplifier parameter during work, the amplitude of vibrating diaphragm can not exceed its secure threshold, thus realize the high-fidelity of loud speaker and the sense of hearing of high-quality.
Specific in the present embodiment, microphone unit is arranged in the rear operatic tunes of loud speaker module, P
0for reference sound pressure, i.e. the audibility threshold acoustic pressure of 1kHz sound, the acoustic pressure that during speaker operation, microphone unit records is P, and the volume of the rear operatic tunes of loud speaker is V, and the volume of air promoted when vibrating diaphragm reaches peak swing is v, and the swept area of vibrating diaphragm is S
d, the peak swing of vibrating diaphragm is X
d; So:
S
d*X
d＝v(1)
P＝P
0*v/V(2)
The amplitude X of vibrating diaphragm when can work in the hope of loud speaker module according to above-mentioned formula
d.Specifically, the size of acoustic pressure directly can be measured by the microphone unit that speaker chamber is built-in, the volume of air V do not promoted in the same time when can calculate diaphragm oscillations according to formula (2), the volume of air promoted according to the diaphragm oscillations of formula (1) again and the relation of amplitude, can calculate the size of vibrating diaphragm at not peak swing in the same time.Preset the secure threshold of vibrating diaphragm up-down vibration, when amplitude during speaker operation exceedes set secure threshold, the acoustic pressure that microphone unit monitors can feed back to signal processor timely, signal processor can by signal transmission excessive for amplitude to power amplifier, power amplifier reduces by regulating internal gain the voltage being applied to voice coil loudspeaker voice coil, thus regulates the amplitude of voice coil loudspeaker voice coil.
Such as, the secure threshold of known voice coil vibrations is X
1, the now acoustic pressure P that records of microphone unit
sbe acoustic pressure threshold value, the gain of power amplifier is mdb.If the actual amplitude of vibrating diaphragm is X during speaker operation
1, and X
1>X
0, the actual amplitude of voice coil loudspeaker voice coil is greater than the oscillation space set by it in this case, and loud speaker may occur noise, and the actual acoustic pressure that now microphone unit records is P
1, and P
1>P
s, the sound pressure signal P that microphone unit records
1through signal gathering unit to signal processing unit; signal processing unit feeds back actual acoustic pressure and is greater than the signal of acoustic pressure threshold value to analog to digital converter; this signal is converted to digital signal by analog to digital converter; again by signal processor by this digital signal transfers to power amplifier; power amplifier regulates internal gain (as reduced the gain of ndb), and decaying is applied to the voltage signal of voice coil loudspeaker voice coil; thus regulate the vibration displacement of voice coil loudspeaker voice coil; make it in set safe amplitude internal vibration, reach the object of protection.
The input signal of so timely adjustment voice coil loudspeaker voice coil changes the vibration of voice coil loudspeaker voice coil, makes it be unlikely to exceed set secure threshold with the change of adjusting amplitude, thus ensures the reliability of loud speaker and realize the protection of tonequality.
The utility model arranges a microphone unit in the inside cavity of existing loud speaker module, microphone unit is utilized to detect the size of acoustic pressure, can be calculated the change of amplitude further by acoustic pressure, and then the amplitude making external circuit detect the diaphragm of loudspeaker by the sound pressure signal detecting microphone output becomes possibility.
The utility model is used to coordinate external circuit (such as said external circuit or other intelligent power output amplification control circuit) to produce following beneficial effect:
1, the reliability yield of speaker product can effectively be improved;
2, the distortion factor of speaker product can effectively be improved;
3, the loudness of speaker product can effectively be kept;
4, can the change of Real-Time Monitoring loud speaker amplitude;
5, multiple difform moving-coil speaker can be applied to;
6, the audition yield of product can effectively be improved;
7, effectively can improve the audition tonequality of product and improve the experience of consumer;
8, can be used for all coil-moving speaker products.
Although be described in detail specific embodiments more of the present utility model by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, when not departing from scope and spirit of the present utility model, above embodiment can be modified.Scope of the present utility model is limited by claims.
Claims (9)
1. a loud speaker module, is characterized in that, comprises shell (1), contains loudspeaker unit (100), microphone unit (200) and FPCB (300) in described shell (1); Described loudspeaker unit (100) involving vibrations system and magnetic circuit system, described vibrational system comprises the vibrating diaphragm and voice coil loudspeaker voice coil that combine, and described voice coil loudspeaker voice coil is electrically connected with the circuit of module outside by the circuit on FPCB (300); Described microphone unit (200) is fixedly installed on the inwall of described shell (1), and is electrically connected with the circuit of module outside.
2. loud speaker module according to claim 1, it is characterized in that, whole module inner chamber is divided into the front operatic tunes (600) and the rear operatic tunes (700) by described loudspeaker unit (100), and described microphone unit (200) is arranged in the described rear operatic tunes (700).
3. the loud speaker module according to any one of claim 1-2, is characterized in that, described microphone unit (200) is electrically connected with the circuit of module outside by another circuit on described FPCB (300).
4. the loud speaker module according to any one of claim 1-2, it is characterized in that, described shell (1) is made up of pcb board at least partly, and described microphone unit (200) is electrically connected by the circuit of the circuit on described pcb board with module outside.
5. the loud speaker module according to any one of claim 1-2, is characterized in that, (1) is electroplate with conducting wire to described shell, and described microphone unit (200) is electrically connected by the circuit of described conducting wire with module outside.
6. loud speaker module according to claim 1, is characterized in that, the side of described shell (1) is provided with module phonate hole (601).
7. loud speaker module according to claim 6, it is characterized in that, described shell (1) comprises shell component and lower shell component, and described module phonate hole (601) is arranged at the sidewall of shell component or is arranged at the sidewall of lower shell component.
8. loud speaker module according to claim 6, is characterized in that, described shell (1) comprises shell component and lower shell component, and described module phonate hole (601) is formed by upper shell component and the cooperation of lower shell component.
9. loud speaker module according to claim 1, is characterized in that, described loud speaker module is coil-moving speaker module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520565735.9U CN204906666U (en) | 2015-07-31 | 2015-07-31 | Loudspeaker module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520565735.9U CN204906666U (en) | 2015-07-31 | 2015-07-31 | Loudspeaker module group |
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| Publication Number | Publication Date |
|---|---|
| CN204906666U true CN204906666U (en) | 2015-12-23 |
Family
ID=54928804
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|---|---|---|---|
| CN201520565735.9U Active CN204906666U (en) | 2015-07-31 | 2015-07-31 | Loudspeaker module group |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721993A (en) * | 2016-03-21 | 2016-06-29 | 歌尔声学股份有限公司 | Single loudspeaker, loudspeaker system and method for adjusting vibration displacement of vibration diaphragm |
| CN105792079A (en) * | 2016-03-28 | 2016-07-20 | 歌尔声学股份有限公司 | Loudspeaker module, loudspeaker system and diaphragm balance adjusting method |
| CN106878868A (en) * | 2017-03-30 | 2017-06-20 | 维沃移动通信有限公司 | A kind of control device of loudspeaker, method and mobile terminal |
| CN107872761A (en) * | 2016-09-23 | 2018-04-03 | 苹果公司 | For the pressure gradient microphone for the acoustic feature for measuring loudspeaker |
| CN108040316A (en) * | 2017-11-24 | 2018-05-15 | 维沃移动通信有限公司 | A kind of amplitude detection method and mobile terminal |
| CN110313186A (en) * | 2017-01-05 | 2019-10-08 | 美商楼氏电子有限公司 | The load variations of acoustic apparatus diagnose and method |
| CN111586536A (en) * | 2020-06-16 | 2020-08-25 | 精拓丽音科技（北京）有限公司 | Loudspeaker and detection system thereof |
| CN112055973A (en) * | 2018-04-26 | 2020-12-08 | 深圳市韶音科技有限公司 | Device and method for removing vibration of double-microphone earphone |
| CN112866690A (en) * | 2021-01-08 | 2021-05-28 | 深圳创维－Rgb电子有限公司 | Microphone fault detection circuit, detection method and equipment thereof, and storage medium |
| CN114125603A (en) * | 2021-11-12 | 2022-03-01 | 歌尔科技有限公司 | Sound box |
| WO2022100551A1 (en) * | 2020-11-11 | 2022-05-19 | 歌尔微电子股份有限公司 | Mems piezoelectric microspeaker, microspeaker unit, and electronic device |
| US11477579B2 (en) | 2018-10-22 | 2022-10-18 | Knowles Electronics, Llc | Diagnostics for acoustic devices and methods |
-
2015
- 2015-07-31 CN CN201520565735.9U patent/CN204906666U/en active Active
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721993B (en) * | 2016-03-21 | 2018-12-14 | 歌尔股份有限公司 | The method of the vibration displacement of loudspeaker monomer, speaker system and adjustment vibrating diaphragm |
| US10715907B2 (en) | 2016-03-21 | 2020-07-14 | Goertek, Inc. | Speaker unit, speaker system, and method for adjusting vibration displacement of vibration diaphragm |
| WO2017161654A1 (en) * | 2016-03-21 | 2017-09-28 | 歌尔声学股份有限公司 | Single loudspeaker, loudspeaker system and method for adjusting vibration displacement of diaphragm |
| CN105721993A (en) * | 2016-03-21 | 2016-06-29 | 歌尔声学股份有限公司 | Single loudspeaker, loudspeaker system and method for adjusting vibration displacement of vibration diaphragm |
| CN105792079A (en) * | 2016-03-28 | 2016-07-20 | 歌尔声学股份有限公司 | Loudspeaker module, loudspeaker system and diaphragm balance adjusting method |
| CN107872761B (en) * | 2016-09-23 | 2019-12-17 | 苹果公司 | Pressure gradient microphone for measuring acoustic characteristics of a loudspeaker |
| CN107872761A (en) * | 2016-09-23 | 2018-04-03 | 苹果公司 | For the pressure gradient microphone for the acoustic feature for measuring loudspeaker |
| US11057718B2 (en) | 2017-01-05 | 2021-07-06 | Knowles Electronics, Llc | Load change diagnostics for acoustic devices and methods |
| CN110313186A (en) * | 2017-01-05 | 2019-10-08 | 美商楼氏电子有限公司 | The load variations of acoustic apparatus diagnose and method |
| CN110313186B (en) * | 2017-01-05 | 2021-07-06 | 美商楼氏电子有限公司 | Acoustic device, acoustic receiver, and integrated circuit |
| CN106878868A (en) * | 2017-03-30 | 2017-06-20 | 维沃移动通信有限公司 | A kind of control device of loudspeaker, method and mobile terminal |
| CN108040316A (en) * | 2017-11-24 | 2018-05-15 | 维沃移动通信有限公司 | A kind of amplitude detection method and mobile terminal |
| CN112055973A (en) * | 2018-04-26 | 2020-12-08 | 深圳市韶音科技有限公司 | Device and method for removing vibration of double-microphone earphone |
| US11477579B2 (en) | 2018-10-22 | 2022-10-18 | Knowles Electronics, Llc | Diagnostics for acoustic devices and methods |
| CN111586536A (en) * | 2020-06-16 | 2020-08-25 | 精拓丽音科技（北京）有限公司 | Loudspeaker and detection system thereof |
| WO2022100551A1 (en) * | 2020-11-11 | 2022-05-19 | 歌尔微电子股份有限公司 | Mems piezoelectric microspeaker, microspeaker unit, and electronic device |
| CN112866690B (en) * | 2021-01-08 | 2022-07-19 | 深圳创维－Rgb电子有限公司 | Microphone fault detection circuit, detection method and equipment thereof, and storage medium |
| CN112866690A (en) * | 2021-01-08 | 2021-05-28 | 深圳创维－Rgb电子有限公司 | Microphone fault detection circuit, detection method and equipment thereof, and storage medium |
| CN114125603A (en) * | 2021-11-12 | 2022-03-01 | 歌尔科技有限公司 | Sound box |
| CN114125603B (en) * | 2021-11-12 | 2024-06-04 | 歌尔科技有限公司 | Sound box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |