CN206775735U - A kind of acoustical generator - Google Patents
A kind of acoustical generator Download PDFInfo
- Publication number
- CN206775735U CN206775735U CN201720603901.9U CN201720603901U CN206775735U CN 206775735 U CN206775735 U CN 206775735U CN 201720603901 U CN201720603901 U CN 201720603901U CN 206775735 U CN206775735 U CN 206775735U
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- voice coil
- boss
- acoustical generator
- magnetic yoke
- magnet
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Abstract
The utility model discloses a kind of acoustical generator, belong to electro-acoustic product technical field, including shell, vibrational system and magnetic circuit system are contained in the shell, the magnetic circuit system includes conductive magnetic yoke, the vibrational system includes voice coil loudspeaker voice coil and the vibrating diaphragm being connected with the voice coil loudspeaker voice coil, and one end of the voice coil loudspeaker voice coil is suspended in the magnetic gap of the magnetic circuit system, and the position of voice coil loudspeaker voice coil described in the face of the conductive magnetic yoke sets the raised boss in the direction of the oriented voice coil loudspeaker voice coil；The boss is structure as a whole with the conductive magnetic yoke.Acoustical generator of the present utility model has less THD and higher product sensitivity, can obtain more preferable acoustical quality.
Description
Technical field
The utility model belongs to electro-acoustic product technical field, and in particular to a kind of acoustical generator.
Background technology
Acoustical generator is a kind of important acoustic element in electronic equipment, for completing to turn between electric signal and voice signal
Change, be a kind of energy conversion device.Acoustical generator generally includes shell, and vibrational system and magnetic circuit system are contained in shell, vibration
System includes vibrating diaphragm and voice coil loudspeaker voice coil, and magnetic circuit system includes conductive magnetic yoke, magnet and magnetic conductive board, and one end of voice coil loudspeaker voice coil is suspended at magnetic circuit system
In magnetic gap, and reciprocal cutting magnetic line movement is done in magnetic gap, so as to drive vibrating diaphragm to instigate space sounding.
Acoustical generator always inevitably produces resonance phenomena in the course of the work, causes acoustical generator to be lost when raising one's voice to its utmost
Very, therefore THD (total harmonic distortion, total harmonic distortion, is unwelcome humorous caused by sound device
The level of ripple) acoustical generator of relatively low high quality is the first choice of people.
Utility model content
Technical problem to be solved in the utility model is：A kind of acoustical generator is provided, there is less THD and higher production
Product sensitivity, more preferable acoustical quality can be obtained.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of acoustical generator, including shell, it is described outer
Contain vibrational system and magnetic circuit system in shell, the magnetic circuit system includes conductive magnetic yoke, the vibrational system include voice coil loudspeaker voice coil and with
The vibrating diaphragm that the voice coil loudspeaker voice coil is connected, one end of the voice coil loudspeaker voice coil are suspended in the magnetic gap of the magnetic circuit system, the conductive magnetic yoke
Face described in the position of voice coil loudspeaker voice coil the raised boss in the direction of the oriented voice coil loudspeaker voice coil is set；The boss is one with the conductive magnetic yoke
Body structure.
Further, the magnetic circuit system includes conductive magnetic yoke, the magnet being fixed in the conductive magnetic yoke and is attached at institute
State the magnetic conductive board of magnet surface；The conductive magnetic yoke includes bottom plate and is arranged on the yoke side wall of the bottom plate the week side of boss, the boss
Connected as one with the yoke side wall.
Further, the magnetic circuit system includes conductive magnetic yoke, the centring magnet being fixed in the conductive magnetic yoke and surround
Four blocks of side magnet on the outside of the centring magnet；The surface of every block of magnet, which is correspondingly sticked, a magnetic conductive board；The conductive magnetic yoke is
Plate-like structure, what the boss was arranged on the conductive magnetic yoke corresponds to gap between the centring magnet and the side magnet
Position.
Further, the boss of the conductive magnetic yoke corresponds to the magnetic gap and set.
Further, the boss is formed by the inside lateral bending folding in position corresponding with the voice coil loudspeaker voice coil in the conductive magnetic yoke.
Further, the boss is outward-dipping from bottom to top close to the side side wall of the magnet.
Further, the upper end of the shell is provided with protecgulum, and the edge part of the vibrating diaphragm is fixed on the side of the shell
Between the lower surface of the side wall of the upper surface of wall and the protecgulum.
Further, the outside in the sidewall upper face of the shell is provided with to the raised barricade in the protecgulum direction, described
The outside in the side wall lower ends face of protecgulum is provided with the groove for being used for accommodating the barricade, and the edge part of the vibrating diaphragm is fixed on the gear
Within the walls between the shell of side and the protecgulum.
Further, boss passes through Sheet Metal Forming Technology machine-shaping.
Further, the conductive magnetic yoke passes through powder metallurgical technique machine-shaping.
After employing above-mentioned technical proposal, the beneficial effects of the utility model are：
Due to a kind of acoustical generator of the present utility model, including shell, vibrational system and magnetic circuit system, magnetic are contained in shell
Road system includes conductive magnetic yoke, and vibrational system includes voice coil loudspeaker voice coil and the vibrating diaphragm being connected with voice coil loudspeaker voice coil, and one end of voice coil loudspeaker voice coil is suspended in magnetic circuit
In the magnetic gap of system, the position of the face voice coil loudspeaker voice coil of conductive magnetic yoke sets the raised boss in the direction of oriented voice coil loudspeaker voice coil, boss and magnetic conduction
Yoke is structure as a whole, and the setting of boss can change the Distribution of Magnetic Field in magnetic gap, increases effective length of the voice coil loudspeaker voice coil in magnetic field,
Improve the symmetry of magnetic induction intensity and the voice coil loudspeaker voice coil effective length in magnetic field, obtain more preferable THD, can also increase through coil
Magnetic induction intensity, lifted product sensitivity.
Because boss is outward-dipping from bottom to top close to the side side wall of magnet, the machine-shaping of conductive magnetic yoke is facilitated, and
And glue amount of depositing can be increased, enhancing magnet and the bonding firmness of conductive magnetic yoke, strengthen use reliability.
Because the outside in the sidewall upper face of shell is provided with the raised barricade in front cover direction, the side wall lower ends face of protecgulum
Outside is provided with the groove for being used for accommodating barricade, and the edge part of vibrating diaphragm is fixed between the shell on the inside of barricade and protecgulum, barricade
Setting can prevent water from entering interiors of products, and protection product is not damaged by.
In summary, a kind of acoustical generator of the present utility model, more preferable THD can be obtained, lifts product sensitivity, enhancing
Use reliability, and waterproof can be played a part of.
Brief description of the drawings
Fig. 1 is a kind of cross section structure diagram of acoustical generator of the utility model；
Fig. 2 is the cross section structure diagram of acoustical generator in the prior art；
In figure, 1- shells, 10- barricades, 2- protecgulums, 20- grooves, 30a- conductive magnetic yokes, 30b- conductive magnetic yokes, 300- bottom plates,
302- yoke side walls, 304- boss, 32- magnet, 34- magnetic conductive boards, 40- vibrating diaphragms, 42- voice coil loudspeaker voice coils, 44- oscillating plates.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
As shown in Fig. 2 acoustical generator of the prior art includes shell 1, vibrational system and magnetic circuit system are contained in shell 1
System, magnetic circuit system include conductive magnetic yoke 30b, and conductive magnetic yoke 30b includes bottom plate 300 and is arranged on the yoke side wall of the week side of boss of bottom plate 300
302, magnet 32 and magnetic conductive board 34 are fixed with successively on bottom plate 300, are provided between magnet 32 and magnetic conductive board 34 and yoke side wall 302
Magnetic gap.The upper end of shell 1 is provided with protecgulum 2, and vibrational system includes oscillating plate 44, voice coil loudspeaker voice coil 42 and is combined as a whole with voice coil loudspeaker voice coil 42
Vibrating diaphragm 40, the outside in the sidewall upper face of shell 1 is provided with the raised barricade 10 in the direction of front cover 2, the side wall lower ends face of protecgulum 2
Outside be provided with and be used to accommodate the groove 20 of barricade 10, the edge part of vibrating diaphragm 40 is fixed on the side wall of the shell 1 of the inner side of barricade 10
Upper surface and protecgulum 2 side wall lower surface between, the wall outer surface of shell 1 flushes with the wall outer surface of protecgulum 2.
As shown in figure 1, acoustical generator of the present utility model is improved on the basis of existing technology, it is embodied in：Magnetic conduction
The position of yoke 30a face voice coil loudspeaker voice coil 42 sets the raised boss 304 in the direction of voice coil loudspeaker voice coil 42 of oriented vibrational system, the correspondence of boss 304
Magnetic gap is set, and boss 304 is structure as a whole with conductive magnetic yoke 30a, specifically, can be connected as one with yoke side wall 302, it is convex
Platform 304 is bent inwards by the connecting portion of bottom plate 300 and yoke side wall 302 and formed, side side wall of the boss 304 close to magnet 32
It is outward-dipping from bottom to top.
Boss 304 can be processed by Sheet Metal Forming Technology machine-shaping, or conductive magnetic yoke 30a entirely through powder metallurgical technique
Shaping.
Above-described embodiment only describes the setting of boss 304 in single magnetic circuit acoustical generator, for double magnetic with five magnet
Road acoustical generator, i.e. conductive magnetic yoke are plate-like structure, and the center of conductive magnetic yoke is provided with centring magnet, and is surrounded on center magnetic
The outside of iron, four blocks of side magnet are additionally provided with, now, magnetic gap is formed by the gap between centring magnet and side magnet.Boss
304 are arranged on the interstitial site corresponded in conductive magnetic yoke between above-mentioned centring magnet and side magnet.
For the double magnetic circuit acoustical generator with three magnet, conductive magnetic yoke includes bottom plate 300 and is connected with bottom plate 300 short
Axle side wall or major axis side wall, boss 304, which is also disposed in conductive magnetic yoke, corresponds to the gap between centring magnet and major axis side magnet
Position or, corresponding to the interstitial site between centring magnet and short axle side magnet.The other structures of double magnetic circuit acoustical generator with it is upper
It is identical to state the structure of single magnetic circuit acoustical generator, therefore will not be repeated here.
A kind of acoustical generator of the present utility model is set to vibration system by being located at the position in magnetic gap on the inside of conductive magnetic yoke
The raised boss in the voice coil loudspeaker voice coil direction of system, changes the Distribution of Magnetic Field in magnetic gap, adds effective length of the voice coil loudspeaker voice coil in magnetic field,
The symmetry of magnetic induction intensity and the voice coil loudspeaker voice coil effective length in magnetic field is improved, so as to obtain more preferable THD, also add and wear
The magnetic induction intensity of coil is crossed, so as to improve product sensitivity, and adds bonding firmness of the conductive magnetic yoke with magnet, is increased
The strong reliability of acoustical generator.
Although the foregoing describing specific embodiment of the present utility model, it should be appreciated by those skilled in the art,
Described embodiment is only part of the embodiment of the present utility model, rather than whole embodiments, and these are only to lift
Example explanation, the scope of protection of the utility model is to be defined by the appended claims.Those skilled in the art is without departing substantially from this
, can be to these embodiments under any performing creative labour of no process on the premise of the principle and essence of utility model
Various changes or modifications are made, but these changes and modification each fall within the scope of protection of the utility model.
Claims (10)
1. a kind of acoustical generator, including shell, vibrational system and magnetic circuit system are contained in the shell, the magnetic circuit system includes
Conductive magnetic yoke, the vibrational system include voice coil loudspeaker voice coil and the vibrating diaphragm being connected with the voice coil loudspeaker voice coil, and one end of the voice coil loudspeaker voice coil is suspended in institute
In the magnetic gap for stating magnetic circuit system, it is characterised in that：The position of voice coil loudspeaker voice coil described in the face of the conductive magnetic yoke sets the oriented sound
The raised boss in the direction of circle；The boss is structure as a whole with the conductive magnetic yoke.
2. acoustical generator according to claim 1, it is characterised in that the magnetic circuit system include conductive magnetic yoke, be fixed on it is described
Magnet in conductive magnetic yoke and the magnetic conductive board for being attached at the magnet surface；The conductive magnetic yoke includes bottom plate and is arranged on the bottom
The yoke side wall of plate the week side of boss, the boss connect as one with the yoke side wall.
3. acoustical generator according to claim 1, it is characterised in that the magnetic circuit system includes conductive magnetic yoke, is fixed on described
Centring magnet in conductive magnetic yoke and four blocks of side magnet being looped around on the outside of the centring magnet；The surface of every block of magnet is corresponding to paste
Provided with a magnetic conductive board；The conductive magnetic yoke is plate-like structure, and what the boss was arranged on the conductive magnetic yoke corresponds to the center
The position in the gap between magnet and the side magnet.
4. acoustical generator according to claim 1, it is characterised in that the boss of the conductive magnetic yoke corresponds to the magnetic gap and set
Put.
5. the acoustical generator according to Claims 2 or 3, it is characterised in that the boss by the conductive magnetic yoke with the sound
The inside lateral bending folding in corresponding position is enclosed to form.
6. acoustical generator according to claim 5, it is characterised in that the boss close to the magnet side side wall under
It is outward-dipping upwards.
7. acoustical generator according to claim 1, it is characterised in that the upper end of the shell is provided with protecgulum, the vibrating diaphragm
Edge part be fixed on the shell side wall upper surface and the protecgulum side wall lower surface between.
8. acoustical generator according to claim 7, it is characterised in that the outside in the sidewall upper face of the shell is provided with to institute
The raised barricade in protecgulum direction is stated, the outside in the side wall lower ends face of the protecgulum is provided with the groove for being used for accommodating the barricade, institute
The edge part for stating vibrating diaphragm is fixed between the shell on the inside of the barricade and the protecgulum.
9. acoustical generator according to claim 6, it is characterised in that the boss passes through Sheet Metal Forming Technology machine-shaping.
10. acoustical generator according to claim 6, it is characterised in that the conductive magnetic yoke is processed into by powder metallurgical technique
Type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720603901.9U CN206775735U (en) | 2017-05-26 | 2017-05-26 | A kind of acoustical generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720603901.9U CN206775735U (en) | 2017-05-26 | 2017-05-26 | A kind of acoustical generator |
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| Publication Number | Publication Date |
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| CN206775735U true CN206775735U (en) | 2017-12-19 |
Family
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| CN201720603901.9U Active CN206775735U (en) | 2017-05-26 | 2017-05-26 | A kind of acoustical generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109218929A (en) * | 2018-01-10 | 2019-01-15 | 歌尔股份有限公司 | Acoustical generator |
| CN110933564A (en) * | 2019-11-26 | 2020-03-27 | 歌尔股份有限公司 | Magnetic conductive plate for sound production device and sound production device |
| CN111010653A (en) * | 2019-12-11 | 2020-04-14 | 瑞声科技(新加坡)有限公司 | Method for manufacturing magnetic circuit system |
| CN111031466A (en) * | 2019-12-11 | 2020-04-17 | 瑞声科技(新加坡)有限公司 | Method for manufacturing magnetic circuit system |
| WO2020258796A1 (en) * | 2019-06-27 | 2020-12-30 | 歌尔股份有限公司 | Sound producing device |
-
2017
- 2017-05-26 CN CN201720603901.9U patent/CN206775735U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109218929A (en) * | 2018-01-10 | 2019-01-15 | 歌尔股份有限公司 | Acoustical generator |
| CN109218929B (en) * | 2018-01-10 | 2024-04-02 | 歌尔股份有限公司 | Acoustic generator |
| WO2020258796A1 (en) * | 2019-06-27 | 2020-12-30 | 歌尔股份有限公司 | Sound producing device |
| CN110933564A (en) * | 2019-11-26 | 2020-03-27 | 歌尔股份有限公司 | Magnetic conductive plate for sound production device and sound production device |
| CN110933564B (en) * | 2019-11-26 | 2021-07-27 | 歌尔股份有限公司 | Magnetic conductive plate for sound production device and sound production device |
| CN111010653A (en) * | 2019-12-11 | 2020-04-14 | 瑞声科技(新加坡)有限公司 | Method for manufacturing magnetic circuit system |
| CN111031466A (en) * | 2019-12-11 | 2020-04-17 | 瑞声科技(新加坡)有限公司 | Method for manufacturing magnetic circuit system |
| WO2021114498A1 (en) * | 2019-12-11 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Method for manufacturing magnetic circuit system |
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