CN207652688U - A kind of acoustical generator - Google Patents
A kind of acoustical generator Download PDFInfo
- Publication number
- CN207652688U CN207652688U CN201721846472.4U CN201721846472U CN207652688U CN 207652688 U CN207652688 U CN 207652688U CN 201721846472 U CN201721846472 U CN 201721846472U CN 207652688 U CN207652688 U CN 207652688U
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- magnetic circuit
- voice coil
- acoustical generator
- magnetic
- conductive board
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Abstract
The utility model discloses a kind of acoustical generator, including shell includes lower magnetic conductive board and multiple side magnetic circuit parts with the vibrational system and magnetic circuit system, the magnetic circuit system being contained in shell；The voice coil leads include detour suspending part；There is the notch section of accommodating detour suspending part between two adjacent side magnetic circuit parts, two magnetic circuit part and the second side magnetic circuit parts when magnetic circuit part is first, the first side magnetic circuit part are equipped with the relief portion of the end for avoiding detour suspending part close to one end of notch section；At the relief portion, lower magnetic conductive board includes the bending part extended from magnetic conduction bottom wall to vibrating diaphragm direction, and the bending part is in voice coil leads close to the side of voice coil.Acoustical generator provided by the utility model passes through the improvement to lower magnetic conduction harden structure so that acoustical generator magnetic circuit system has unobstructed magnetic conductive loop, improves the BL values of acoustical generator, acoustical generator can get higher sensitivity.
Description
Technical field
The utility model is related to electroacoustic techniques fields.More particularly, to a kind of acoustical generator.
Background technology
Acoustical generator is a kind of device that can convert electrical energy into acoustic energy, belongs to most basic phonation unit, answers extensively
For in the terminal devices such as mobile phone.In recent years, in order to meet the appearance requirement of the electronic products such as mobile phone, the volume of electronic product is not
Disconnected to reduce, shape tends to be lightening, and therefore, the volume of the acoustical generator in electronic product also tends to small and light.
Current existing acoustical generator includes the shell for being formed with accommodation space and the vibration system being contained in the shell substantially
System and magnetic circuit system, vibrational system include vibrating diaphragm and are incorporated in the voice coil of vibrating diaphragm side, and magnetic circuit system forms the magnetic of receiving voice coil
Gap.Voice coil generates vibration under the action of magnetic circuit system Ampere force, and diaphragm oscillations sounding is driven to realize the sounding work(of acoustical generator
Energy.
A kind of common fair line mode of voice coil leads is that lead rides over side in magnetic circuit system in the design of current utterance device
On magnetic conductive board, lead, which fits together with side magnetic conductive board and is coated with lead, fixes glue；It has a disadvantage in that, when acoustical generator main body magnetic
When line structure is five conventional magnetic circuit scheme, due to needing to avoid to lead vibration, design evacuation knot is needed on the magnetic conductive board of side
Structure can not form unobstructed magnetic conductive loop which results in magnetic circuit system, and leakage field occurs in acoustical generator side, reduce voice coil for
The utilization ratio of the magnet magnetic line of force causes the loss of acoustical generator BL values very big, influences the whole acoustical behavior of acoustical generator.If while leading
When being not provided with avoiding structure or less magnetic conductive board evacuation lead in side on magnetic sheet, acoustical generator is during being powered on, due to drawing
Line suspending part is shorter, and the active force that voice coil is pullled when lead is with voice coil up-down vibration is larger, easily leads to voice coil and generates imbalance
Vibration, so as to cause polarization.
Accordingly, it is desirable to provide a kind of new acoustical generator structure, to overcome the drawbacks described above present in the prior art.
Utility model content
In view of the above problems, the technical problem to be solved by the present invention is to provide a kind of acoustical generators, and the acoustical generator is full
The avoiding structure on sufficient side magnetic conductive board with evacuation voice coil leads vibration simultaneously, passes through the improvement to lower magnetic conduction harden structure, a side
Face makes acoustical generator magnetic circuit system have unobstructed magnetic conductive loop, improves the BL values of acoustical generator, acoustical generator can get higher
The problem of on the other hand sensitivity solves voice coil force unbalance in acoustical generator, is also easy to produce polarization improves hair on the whole
The stability and acoustical behavior of sound device.
In order to solve the above technical problems, the utility model uses following technical proposals：
A kind of acoustical generator, including shell and the vibrational system and magnetic circuit system that are contained in shell, the vibrational system packet
Include the voice coil with voice coil leads；The magnetic circuit system includes the magnetic gap for accommodating voice coil；The magnetic circuit system includes：
Lower magnetic conductive board with tabular magnetic conduction bottom wall；And
Multiple side magnetic circuit parts on magnetic conduction bottom wall；
The voice coil leads include the detour suspending part being connect with voice coil；
There are the notch section of accommodating detour suspending part, described two side magnetic circuit parts between two adjacent side magnetic circuit parts
For first in magnetic circuit part and second magnetic circuit part, the voice coil leads further include the extending direction along the first side magnetic circuit part
Fair line and the fixed part being fixed on above the first side magnetic circuit part, first side magnetic circuit part is close to one end of the notch section
Relief portion equipped with the end for avoiding detour suspending part；
At the relief portion, lower magnetic conductive board includes the bending part extended from magnetic conduction bottom wall to vibrating diaphragm direction, the bending
Portion is located at voice coil leads close to the side of voice coil.
Further, it is preferable to scheme is, the acoustical generator include opposite two first while and at opposite two second,；
The voice coil has two voice coil leads；Two voice coil leads are respectively along the first avris fair line, and two voice coils draw
The detour hanging part of line is in two ends of the second avris；
In the first avris, second side magnetic circuit part is located at second for first side magnetic circuit part and the bending part
Avris.
Further, it is preferable to which scheme is, the magnetic circuit system further includes the centring magnet and center set on magnetic conduction bottom wall center
Magnetic conductive board；
First side magnetic circuit part includes：Positioned at the first side magnet of the first avris magnetic conduction bottom wall edge；And it combines
Magnetic conductive board when being fixed on the first first above magnet；
Second side magnetic circuit part includes：Positioned at the second side magnet of the second avris magnetic conduction bottom wall edge；And it combines
Magnetic conductive board when being fixed on the described second second above magnet；
Centring magnet, first magnet and lower magnetic conductive board bending part in magnet, second, which are collectively formed, accommodates the voice coil
Magnetic gap.
Further, it is preferable to scheme is, described first is equipped in magnetic conductive board and second between magnetic conductive board and to be connected as one
Connecting plate；
The notch section and relief portion are located at the inside of connecting plate.
Further, it is preferable to which scheme is, the top surface of the bending part is no more than the top surface of side magnetic circuit part.
Further, it is preferable to which scheme is, the top surface of the bending part and the top surface of first side magnetic conductive board are neat
It is flat.
Further, it is preferable to which scheme is, the inner surface of the bending part is no more than the inside rim surface of side magnetic circuit part.
Further, it is preferable to which scheme is, the inner side edge of the inner surface of the bending part and first side magnetic conductive board is along table
Face flushes.
Further, it is preferable to scheme is, the bending part is by cutting magnetic conduction bottom wall edge and by cutting part to vibrating diaphragm side
To being bent to form.
Further, it is preferable to which scheme is, the detour suspending part of two voice coil leads is arranged in mirror symmetry.
The beneficial effects of the utility model are as follows：
Compared with existing acoustical generator, acoustical generator provided by the utility model has evacuation voice coil on meeting side magnetic conductive board
The avoiding structure of lead vibration simultaneously, by the improvement to lower magnetic conduction harden structure, on the one hand utilizes lower magnetic conductive board bending part in
Heart magnetic conductive board forms complete unobstructed magnetic conductive loop, avoids the side leakage field of acoustical generator, improves voice coil for magnet magnetic
The utilization ratio of the line of force improves BL values and the sensitivity of acoustical generator, on the other hand avoids voice coil on the acoustical generator side magnetic conductive board
Voice coil leads pull the active force of voice coil when the relief portion of lead vibration also effectively reduces vibration, reduce voice coil leads to sound
The influence of circle so that at work, voice coil stress balance is not susceptible to polarize product, improves the sound of acoustical generator on the whole
Learn performance.
Description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the assembling schematic diagram of the provided acoustical generator of the utility model.
Fig. 2 shows the front views of the provided acoustical generator of the utility model.
Fig. 3 shows the rearview of the provided acoustical generator of the utility model.
Fig. 4 shows the structural schematic diagram of lower magnetic conductive board in the provided acoustical generator of the utility model.
Specific implementation mode
In following description given, for purposes of illustration, in order to provide comprehensive reason to one or more embodiment
Solution, numerous specific details are set forth.It may be evident, however, that these realities can also be realized without these specific details
Apply mode.In other examples, one or more embodiment for ease of description, well known structure and equipment are with block diagram
Form show.
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not limit the scope of protection of the utility model with this.
The avoiding structure of design evacuation voice coil leads on the magnetic conductive board of traditional acoustical generator side, easily leading to magnetic circuit system can not form
There is leakage field in unobstructed magnetic conductive loop, acoustical generator side, reduce voice coil for the utilization ratio of the magnet magnetic line of force, acoustical generator BL values
Loss is very big.If while be not provided on magnetic conductive board avoiding structure or while magnetic conductive board evacuation lead it is less when, acoustical generator is being powered
In the course of work, since lead suspending part is shorter, the active force that voice coil is pullled when lead is with voice coil up-down vibration is larger, easily leads
Voice coil is caused to generate unbalance vibration, so as to cause polarization.
Based on many defects of above-mentioned traditional acoustical generator, the utility model provides a kind of acoustical generator structure, specifically, in conjunction with
Fig. 1 to Fig. 4, a kind of acoustical generator, the acoustical generator include shell 1 and the vibrational system that is contained in shell 1 and magnetic circuit system,
In schematic structure, the acoustical generator overall structure that the utility model is specifically illustrated is rectangle, it is possible to understand that, the acoustical generator shell
Structural style can be rounded cuboid type, the square structural styles such as build or rounded square build, the utility model be simultaneously not added with
With limitation.Specifically, the acoustical generator include opposite two first while and at opposite two second,；It is more clear in order to illustrate
Chu avoids ambiguity, the first avris as described above is referred to as short axle avris in following texts, the second avris is referred to as long axis avris.
In present embodiment, the acoustical generator magnetic circuit system is five magnetic structures comprising has and is led under tabular magnetic conduction bottom wall 21
Magnetic sheet 2；Centring magnet 3 and center magnetic conductive board 31 set on 21 center of magnetic conduction bottom wall；And multiple sides on magnetic conduction bottom wall 21
Magnetic circuit part；Wherein magnetic circuit part and the second side magnetic circuit part, first side magnetic circuit part when magnetic circuit part is divided into first
Positioned at short axle avris, second side magnetic circuit part is located at long axis avris.Specifically, first when magnetic circuit part includes along short axle
First side magnetic conductive board 41 of 4 top of magnet when magnet 4 and combination are fixed on first of the first of side direction setting, the second side magnetic circuit
Part includes being led along second the second side when magnet 5 and combination are fixed on second above magnet 5 that long axis avris direction is arranged
Magnetic sheet 51.
Vibrational system described in the utility model includes vibrating diaphragm and is combined fixed voice coil 6, the sound with the vibrating diaphragm
It includes detour suspending part 611 and fixed part 612 that circle 6, which has two voice coil leads 61, every voice coil leads 61,；Two voice coil leads
61 respectively along short axle avris fair line, and the detour hanging part of two voice coil leads 61 is in two ends of long axis avris, voice coil
The fixed part 612 of lead 61 with first at the top of magnet 4 first 41 upper surface of magnetic conductive board combined fixation.It should be noted that
When acoustical generator includes from the case inside surface above the magnetic conductive board of side to the extension extended close to voice coil side, voice coil draws
For the fixed part of line in combination with being fixed on extension, the utility model is not restricted this.In addition voice coil 6 generates partially in order to prevent
It shakes, it is preferable that the detour suspending part 611 of two voice coil leads 61 is arranged in mirror symmetry.
Further, there is accommodating detour suspending part 611 in present embodiment, between adjacent two side magnetic circuit parts
Notch section 7, and the first side magnetic circuit part is equipped with the end for avoiding detour suspending part 611 close to one end of the notch section 7
Relief portion 8；At the relief portion 8, lower magnetic conductive board 2 includes the bending part extended from magnetic conduction bottom wall 21 to vibrating diaphragm direction
22, which is located at voice coil leads 61 close to the side of voice coil 6, it is preferable that in order to simplify the processing system of lower magnetic conductive board 2
Make, and ensure the overall performance of lower magnetic conductive board 2, the bending part 22 by 21 edge of magnetic conduction bottom wall is cut and by cutting part to
Vibrating diaphragm direction is bent to form.And in order to obtain complete unobstructed magnetic conductive loop, BL values and the sensitivity of acoustical generator are promoted
Under the conditions of, it is easy to assembly, voice coil force unbalance is avoided, is polarized, the top surface of the bending part 22 is no more than side magnetic
The top surface of road part, it is preferable that the top surface of the top surface of the bending part 22 and first side magnetic conductive board 41
It flushes.In addition the inner surface of the bending part 22 is no more than the inside rim surface of side magnetic circuit part, it is preferable that the bending
The inner surface in portion 22 is flushed with the inside rim surface of first side magnetic conductive board 41.In the provided acoustical generator of present embodiment
In, the centring magnet 3, first magnet 5 and 2 bending part 22 of lower magnetic conductive board in magnet 4, second are collectively formed described in receiving
The magnetic gap of voice coil 6.
Acoustical generator provided by the utility model is meeting evacuation knot of the side magnetic circuit part with the evacuation vibration of voice coil leads 6
Structure simultaneously, by the improvement to 2 structure of lower magnetic conductive board, on the one hand utilizes 2 bending part 22 of lower magnetic conductive board and 31 shape of center magnetic conductive board
At complete unobstructed magnetic conductive loop, the side leakage field of acoustical generator is avoided, improves utilization of the voice coil for the magnet magnetic line of force
Efficiency improves BL values and the sensitivity of acoustical generator, on the other hand avoids voice coil leads on the first side of acoustical generator magnetic circuit part
Voice coil leads 61 pull the active force of voice coil 6 when the relief portion 8 of 61 vibrations also effectively reduces vibration, reduce voice coil leads 61
Influence to voice coil 6 so that at work, 6 stress balance of voice coil is not susceptible to polarize, improves sounding on the whole product
The acoustical behavior of device.
It should be noted that in order to obtain complete unobstructed magnetic conductive loop, to promote profit of the voice coil 6 for the magnet magnetic line of force
With the BL values and sensitivity of efficiency and acoustical generator, side magnetic conductive board described in present embodiment is continuous cyclic structure；The side
Magnetic conductive board further includes that when magnetic conductive board 41 is with second, magnetic conductive board connect 51 connecting plates 9 being integrated by first；Preferably, described to lack
Oral area 7 and relief portion 8 are located at the inside of connecting plate 9.
In conclusion compared with existing acoustical generator, acoustical generator provided by the utility model can ensure lead detour
Between suspending part length and fixed part length under conditions of relative engagement relationship, using with relief portion pair on the first side magnetic circuit part
The bending part extended from magnetic conduction bottom wall to vibrating diaphragm direction answered realizes that lower magnetic conductive board forms completely unobstructed lead with center magnetic conductive board
Magnetic loop avoids the side leakage field of acoustical generator, improves utilization ratio of the voice coil for the magnet magnetic line of force, the BL values of acoustical generator
And sensitivity, and voice coil vibrations balance when product work, do not polarize, improve the acoustical behavior of acoustical generator on the whole.
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to the embodiment of the utility model, for those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
The row of protection domain.
Claims (10)
1. a kind of acoustical generator, including shell and the vibrational system and magnetic circuit system, the vibrational system that are contained in shell include
Voice coil with voice coil leads；The magnetic circuit system includes the magnetic gap for accommodating voice coil；It is characterized in that,
The magnetic circuit system includes：
Lower magnetic conductive board with tabular magnetic conduction bottom wall；And
Multiple side magnetic circuit parts on magnetic conduction bottom wall；
The voice coil leads include the detour suspending part being connect with voice coil；
There is the notch section of accommodating detour suspending part, described two side magnetic circuit parts are the between two adjacent side magnetic circuit parts
One side magnetic circuit part and the second side magnetic circuit part, the voice coil leads further include the extending direction fair line along the first side magnetic circuit part
And it is fixed on the fixed part above the first side magnetic circuit part, first side magnetic circuit part is equipped with close to one end of the notch section
Relief portion for the end for avoiding detour suspending part；
At the relief portion, lower magnetic conductive board includes the bending part extended from magnetic conduction bottom wall to vibrating diaphragm direction, the bending part
In voice coil leads close to the side of voice coil.
2. a kind of acoustical generator according to claim 1, which is characterized in that the acoustical generator includes opposite two the first sides
With two opposite the second sides；
The voice coil has two voice coil leads；Two voice coil leads are respectively along the first avris fair line, and two voice coil leads
Detour hanging part is in two ends of the second avris；
First side magnetic circuit part and the bending part are in the first avris, and described second when magnetic circuit part is located at second
Side.
3. a kind of acoustical generator according to claim 2, which is characterized in that
The magnetic circuit system further includes the centring magnet and center magnetic conductive board set on magnetic conduction bottom wall center；
First side magnetic circuit part includes：Positioned at the first side magnet of the first avris magnetic conduction bottom wall edge；And it combines and fixes
First above magnet first while magnetic conductive board；
Second side magnetic circuit part includes：Positioned at the second side magnet of the second avris magnetic conduction bottom wall edge；And it combines and fixes
Described second above magnet second while magnetic conductive board；
The magnetic for accommodating the voice coil is collectively formed in centring magnet, first magnet and lower magnetic conductive board bending part in magnet, second
Gap.
4. a kind of acoustical generator according to claim 3, which is characterized in that described first in magnetic conductive board and second magnetic conductive board
Between be equipped with the connecting plate that is connected as one；
The notch section and relief portion are located at the inside of connecting plate.
5. a kind of acoustical generator according to claim 1, which is characterized in that the top surface of the bending part is no more than side magnetic
The top surface of road part.
6. a kind of acoustical generator according to claim 3, which is characterized in that the top surface of the bending part and described first
The top surface of side magnetic conductive board flushes.
7. acoustical generator according to claim 1, which is characterized in that the inner surface of the bending part is no more than side magnetic circuit part
The inside rim surface divided.
8. a kind of acoustical generator according to claim 3, which is characterized in that the inner surface of the bending part and described first
The inside rim surface of side magnetic conductive board flushes.
9. a kind of acoustical generator according to claim 1, which is characterized in that the bending part is by cutting magnetic conduction bottom wall edge
It cuts and is bent to form cutting part to vibrating diaphragm direction.
10. a kind of acoustical generator according to claim 2, which is characterized in that the detour suspending part of two voice coil leads is in mirror
As being symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721846472.4U CN207652688U (en) | 2017-12-25 | 2017-12-25 | A kind of acoustical generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721846472.4U CN207652688U (en) | 2017-12-25 | 2017-12-25 | A kind of acoustical generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207652688U true CN207652688U (en) | 2018-07-24 |
Family
ID=62875390
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721846472.4U Active CN207652688U (en) | 2017-12-25 | 2017-12-25 | A kind of acoustical generator |
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| CN (1) | CN207652688U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246561A (en) * | 2018-09-21 | 2019-01-18 | 歌尔股份有限公司 | Sounding device and electronic equipment |
| WO2020093537A1 (en) * | 2018-11-07 | 2020-05-14 | 歌尔股份有限公司 | Vibration system in sound production device, and sound production device |
| WO2020244208A1 (en) * | 2019-06-03 | 2020-12-10 | 歌尔股份有限公司 | Sound generating device |
| WO2021253534A1 (en) * | 2020-06-15 | 2021-12-23 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN117440301A (en) * | 2023-12-18 | 2024-01-23 | 瑞声光电科技(常州)有限公司 | Speaker monomer and electronic equipment |
-
2017
- 2017-12-25 CN CN201721846472.4U patent/CN207652688U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246561A (en) * | 2018-09-21 | 2019-01-18 | 歌尔股份有限公司 | Sounding device and electronic equipment |
| CN109246561B (en) * | 2018-09-21 | 2020-01-14 | 歌尔股份有限公司 | Sound generating device and electronic equipment |
| WO2020093537A1 (en) * | 2018-11-07 | 2020-05-14 | 歌尔股份有限公司 | Vibration system in sound production device, and sound production device |
| WO2020244208A1 (en) * | 2019-06-03 | 2020-12-10 | 歌尔股份有限公司 | Sound generating device |
| WO2021253534A1 (en) * | 2020-06-15 | 2021-12-23 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN117440301A (en) * | 2023-12-18 | 2024-01-23 | 瑞声光电科技(常州)有限公司 | Speaker monomer and electronic equipment |
| CN117440301B (en) * | 2023-12-18 | 2024-03-26 | 瑞声光电科技(常州)有限公司 | Speaker monomer and electronic equipment |
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