CN206908833U - Minitype acoustic generator - Google Patents

Minitype acoustic generator Download PDF

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Publication number
CN206908833U
CN206908833U CN201720589875.9U CN201720589875U CN206908833U CN 206908833 U CN206908833 U CN 206908833U CN 201720589875 U CN201720589875 U CN 201720589875U CN 206908833 U CN206908833 U CN 206908833U
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China
Prior art keywords
shell
magnet
yoke
acoustic
minitype
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CN201720589875.9U
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Chinese (zh)
Inventor
郭翔
刘岩涛
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Goertek Techology Co Ltd
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Goertek Techology Co Ltd
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Priority to CN201720589875.9U priority Critical patent/CN206908833U/en
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Abstract

The utility model discloses a kind of minitype acoustic generator, it is related to electro-acoustic product technical field, including shell and the vibrational system being housed in the shell and magnetic circuit system, the magnetic circuit system includes yoke, the central part of the yoke is sequentially provided with centring magnet and center magnetic conductive board, the four side edge of the yoke be sequentially provided with respectively while magnet and while magnetic conductive board, the position that each side magnet is corresponded in the side wall of the shell is equipped with mounting groove, each side magnet is respectively in the corresponding mounting groove, the breach being recessed to the end of the side wall is provided with positioned at the side wall of the shell of the mounting groove sidepiece, the side magnet and the conductive magnetic yoke are enclosed in two open sides of the breach respectively, the breach forms out acoustic aperture;The side-wall outer side of the shell close to it is described go out acoustic aperture position be provided with the storage tank that caves inward, be fixed with the storage tank for cover it is described go out acoustic aperture damping screen.The adjustment of the utility model acoustic resistance is flexible, and acoustical behavior is good.

Description

Minitype acoustic generator
Technical field
Electro-acoustic product technical field is the utility model is related to, more particularly to a kind of minitype acoustic generator.
Background technology
Minitype acoustic generator is the important acoustic element of portable electric appts, for completing between electric signal and voice signal Conversion, be a kind of energy conversion device.Minitype acoustic generator generally includes shell and the vibrational system being housed in shell and magnetic Road system, magnetic circuit system include yoke, and the central part of yoke is fixed with internal magnet and interior magnetic conductive board successively, in the edge part of yoke Be fixed with successively while magnet and while magnetic conductive board, internal magnet and interior magnetic conductive board and while magnet and while magnetic conductive board between be provided with magnetic gap; Vibrational system includes vibrating diaphragm and voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil makees upper and lower cutting magnetic line movement in the magnetic gap of magnetic circuit system, so as to band Dynamic vibrating diaphragm instigates air sounding.
Constantly reduce with the thickness of minitype acoustic generator, current minitype acoustic generator is mostly using the exposed knot of yoke Structure, such a structure cause going out acoustic aperture and can only being arranged in the side wall of shell for minitype acoustic generator, can not spoken from bottom.It is such a go out Acoustic aperture is arranged on the minitype acoustic generator in the side wall of shell, is limited by appearance and size and acoustical behavior, cause at acoustic aperture without Method pastes damping screen, so as to can not flexibly adjust the acoustic resistance of minitype acoustic generator by damping screen, causes minitype acoustic generator Performance is difficult to be lifted.
Utility model content
For disadvantages described above, technical problem to be solved in the utility model is to provide a kind of minitype acoustic generator, and this is miniature The acoustic resistance adjustment of acoustical generator is flexible, and acoustical behavior is high.
In order to solve the above technical problems, the technical solution of the utility model is:
A kind of minitype acoustic generator, including shell and the vibrational system and magnetic circuit system that are housed in the shell, the magnetic Road system includes yoke, and the central part of the yoke is sequentially provided with centring magnet and center magnetic conductive board, the four side of the yoke Edge be sequentially provided with respectively while magnet and while magnetic conductive board, the position that each side magnet is corresponded in the side wall of the shell is equipped with Mounting groove, each side magnet is respectively in the corresponding mounting groove, positioned at the shell of the mounting groove sidepiece Side wall is provided with the breach being recessed to the end of the side wall, and the side magnet and the yoke are enclosed in the two of the breach respectively Open side, the breach form out acoustic aperture;The position that the side-wall outer side goes out acoustic aperture described in is provided with the appearance to cave inward Put groove, be fixed with the storage tank for cover it is described go out acoustic aperture damping screen.
Wherein, the depth of the storage tank is more than or equal to the thickness of the damping screen.
Wherein, the side surface of the side magnet and the yoke flushes with the bottom land of the storage tank.
Wherein, the damping screen is pasted onto in the shell, the side magnet and the yoke simultaneously.
Wherein, it is described go out acoustic aperture be provided with two, acoustic aperture is gone out described in two and is arranged in the same side side wall of the shell, and point Not Wei Yu the side magnet both sides.
Wherein, it is described go out acoustic aperture be provided with it is multiple, it is multiple it is described go out acoustic aperture be separately positioned on three sides or four sides of the shell In side wall, or it is multiple it is described go out acoustic aperture be separately positioned in the relative both sides side wall of the shell, or it is multiple it is described go out acoustic aperture It is separately positioned in the adjacent both sides side wall of the shell.
Wherein, the position that the voice coil leads bending of the voice coil loudspeaker voice coil of the vibrational system is corresponded in the yoke is provided with keeping away for depression Allow groove.
Wherein, the position that the fair line track of the voice coil leads of the voice coil loudspeaker voice coil of the vibrational system is corresponded on the side magnetic conductive board is set There is the glue groove of depression.
Wherein, the upper edge position of the center magnetic conductive board is provided with the avoidance breach of depression.
After employing above-mentioned technical proposal, the beneficial effects of the utility model are:
Because the acoustic aperture that goes out of the utility model minitype acoustic generator is arranged in the side wall of shell, in the side wall of shell close to go out The position of acoustic aperture is provided with the storage tank to cave inward, and the damping screen for covering out acoustic aperture is fixed with storage tank.Storage tank Set and cause going out acoustic aperture and can also adjust acoustic resistance by pasting damping screen on the side wall of outer shell, acoustic resistance flexible adjustment, and The appearance and size and acoustical behavior of minitype acoustic generator will not be changed, the frequency response harmonic that can improve minitype acoustic generator is lost Very, acoustical behavior is high.
Because the position of the voice coil leads bending for the voice coil loudspeaker voice coil that vibrational system is corresponded in yoke is provided with the escape groove of depression.Avoid Groove can effectively avoid voice coil leads, avoid voice coil leads and collided during voice coil vibrations with yoke, will not Collision sound is produced, improves the sound quality of minitype acoustic generator.
Because the position for the fair line track that voice coil leads are corresponded on the magnetic conductive board of side is provided with the glue groove of depression.Glue groove can The glue of bonding voice coil leads is housed, can effectively prevent excessive glue from flowing into magnetic gap.
Because the upper edge position of center magnetic conductive board is provided with the avoidance breach of depression, avoiding breach can effectively prevent The edge of voice coil loudspeaker voice coil and the glue and interior magnetic conductive board of vibrating diaphragm phase bonding site collides during voice coil loudspeaker voice coil up-down vibration, will not produce collision Between, improve the sound quality of minitype acoustic generator.
In summary, the utility model minitype acoustic generator solves goes out acoustic aperture and is arranged on the miniature hair of sidepiece in the prior art Sound device can not flexibly adjust the technical problem of acoustic resistance, and the acoustic resistance adjustment of the utility model minitype acoustic generator is flexible, acoustical behavior Good, sound quality is high.
Brief description of the drawings
Fig. 1 is the decomposition texture schematic diagram of the utility model minitype acoustic generator;
Constitutional diagram-damping screen that Fig. 2 is Fig. 1 is not pasted;
Fig. 3 is Fig. 2 constitutional diagram;
In figure:10th, shell, 12, storage tank, 14, mounting groove, 20, yoke, 200, escape groove, 22, side magnet, 24, center Magnet, 26, center magnetic conductive board, 260, avoid breach, 28, side magnetic conductive board, 280, glue groove, 30, voice coil loudspeaker voice coil, 300, voice coil leads, 32nd, vibrating diaphragm, 34, oscillating plate, 40, damping screen, 50, go out acoustic aperture.
Embodiment
With reference to the accompanying drawings and examples, the utility model is expanded on further.
The interior finger being related in this specification is outer to refer to away from minitype acoustic generator center close to the position at minitype acoustic generator center Position;Refer to the direction provided with vibrational system on the direction being related to, refer to the direction provided with magnetic circuit system under direction.
As Fig. 1 and Fig. 3 are jointly shown, a kind of minitype acoustic generator, include the shell 10 of ring-type, shell 10 is rectangle knot Structure, vibrational system and magnetic circuit system are contained in shell 10.Vibrational system is fixed on the upper surface of shell 10 including edge part Vibrating diaphragm 32, the upside of vibrating diaphragm 32 are fixedly arranged in the middle of oscillating plate 34, and the downside of vibrating diaphragm 32 is fixedly arranged in the middle of voice coil loudspeaker voice coil 30.Voice coil loudspeaker voice coil 30 is drawn There are two voice coil leads 300, for being electrically connected with external circuit.Magnetic circuit system includes being fixed on the yoke 20 of the lower end of shell 10, Yoke 20 is plate-like structure, and the central part of the inner side of yoke 20 is fixed with centring magnet 24 and center magnetic conductive board 26, yoke successively 20 four side edge position be fixed with successively respectively while magnet 22 and while magnetic conductive board 28, side magnetic conductive board 28 by Shooting Technique with it is outer Shell 10 is combined.Centring magnet 24 and center magnetic conductive board 26 and while magnet 22 and while magnetic conductive board 28 between be provided with magnetic gap, voice coil loudspeaker voice coil 30 end is located in magnetic gap.
Jointly shown with Fig. 3 as shown in Figure 1, Figure 2, the position that each side magnet 22 is corresponded in the side wall of shell 10 is equipped with mounting groove 14, for mounting groove 14 in the horizontal direction inside and outside side wall, each side magnet 22 is separately fixed at corresponding mounting groove 14 It is interior.The breach of the end depression to side wall, side magnet 22 and magnetic are additionally provided with the side wall of the shell 10 of the sidepiece of mounting groove 14 Yoke 20 blocks in the both-side opening side of breach respectively so that what indentation, there formd minitype acoustic generator goes out acoustic aperture 50, that is, goes out acoustic aperture 50 are arranged on the sidepiece of side magnet 22, and are surrounded jointly by shell 10, side magnet 22 and yoke 20.The side-wall outer side of shell 10 leans on The position for closely going out acoustic aperture 50 is provided with the storage tank 12 to cave inward, and the damping for covering out acoustic aperture 50 is fixed with storage tank 12 Net 40.The depth of storage tank 12 is more than or equal to the thickness of damping screen 40, i.e., after damping screen 40 is adhesively fixed into storage tank 12, resistance The outer surface of Buddhist nun's net 40 is non-bulging in the outer surface of the side wall of shell 10, so as to while acoustic resistance is adjusted flexibly by damping screen 40 The appearance and size of minitype acoustic generator is not interfered with again.The side surface of the preferred side magnet 22 of present embodiment and yoke 20 is with housing The bottom land of groove 12 is flush, and damping screen 40 is pasted onto in shell 10, side magnet 22 and yoke 20 simultaneously.
As shown in Fig. 2 go out acoustic aperture can set one, two or more.When going out acoustic aperture provided with one, can set In the short side side wall of shell 10, it can also be arranged in the long side side wall of shell 10;, can be with when going out acoustic aperture and being provided with two It is arranged in the same side side wall of shell 10, can also be separately positioned in the relative or neighbor both sides side wall of shell 10, when Two when going out acoustic aperture and being arranged in the same side wall of shell 10, present embodiment preferably two goes out acoustic aperture and is located at side magnet 22 respectively Both sides;When go out acoustic aperture provided with three and more than three when, respectively go out acoustic aperture can be distributed two sides for being arranged on shell 10, three sides or In four side side walls, when multiple pore size distributions of speaking are arranged in the both sides side wall of shell 10, shell can be arranged on by respectively going out acoustic aperture In 10 relative both sides side wall or in adjacent both sides side wall.The quantity of damping screen 40 is equal with the quantity for going out acoustic aperture.
As Fig. 2 and Fig. 3 are jointly shown, what the side wall of the preferred shell 10 of present embodiment was in contact with the sidepiece of side magnet 22 Position is provided with breach, goes out acoustic aperture and is surrounded jointly by the side wall and side magnet 22 of shell 10, i.e., the breach is by the side wall of shell 10 The breach of the direction depression of magnet 22, side magnet 22 block opening in the breach when one to be in contact with magnet 22 is laterally away from Mouth side.The present embodiment position that further side wall of preferred shell 10 is in contact with side magnet is provided with breach, the breach to Under extend to shell 10 side wall lower end, then go out acoustic aperture 50 and surrounded jointly by the side wall of shell 10, side magnet 22 and yoke 20, This goes out acoustic aperture 50 and processed simply, and the part of damping screen 40 is located in storage tank 12, is partially covered on the outside of side magnet 22.
As shown in figure 1, the position that the inner side of yoke 20 corresponds to the bending of the voice coil leads 300 of voice coil loudspeaker voice coil 30 is provided with keeping away for depression Allow groove 200, escape groove 200 can avoid voice coil leads 300 from being collided with the sounding of yoke 20, be advantageous to improve the sound of minitype acoustic generator Sound quality.
As shown in figure 1, correspond to voice coil leads 300 on the upper surface of the side magnetic conductive board 28 of the both sides long side of shell 10 The position of fair line track is provided with the glue groove 280 of depression, and glue groove 280 can prevent excessive glue from trickling into magnetic gap.
As shown in figure 1, the upper edge position of center magnetic conductive board 26 is provided with the avoidance breach 260 of depression, i.e. center magnetic conduction The stepped structure of edge part of plate 26, can anti-vibrating diaphragm 32 glue mutually Nian Jie with voice coil loudspeaker voice coil 30 shaken in voice coil loudspeaker voice coil 30 and vibrating diaphragm about 32 Edge during film with center magnetic conductive board 26 collides, and is equally beneficial for improving the sound quality of minitype acoustic generator.
The utility model sets storage tank by the side-wall outer side in shell, and damping screen is bonded in storage tank, so as to Acoustic resistance flexibly can be adjusted by damping screen, the appearance and size of minitype acoustic generator will not be changed again, improve miniature sounding The frequency response harmony wave distortion of device, improve the acoustical behavior and sound quality of minitype acoustic generator.
This specification is only that the technical solution of the utility model is illustrated by taking the minitype acoustic generator of said structure as an example Illustrate, the technical solution of the utility model is not limited in the minitype acoustic generator of said structure in practical application, and it can be applied It will go out in any one in the minitype acoustic generator that acoustic aperture is arranged on side wall of outer shell, those skilled in the art is according to above-mentioned implementation The elaboration of example, it is not necessary to pay any performing creative labour can and the technical solution of the utility model is applied to other structures Minitype acoustic generator in, therefore no matter whether the other structures of minitype acoustic generator identical with above-described embodiment, as long as in shell Side-wall outer side set storage tank, each fall within protection of the present utility model for fixing damping screen to improve the product of acoustical behavior In the range of.
The utility model is not limited to above-mentioned specific embodiment, and one of ordinary skill in the art visualizes from above-mentioned Hair, without performing creative labour, a variety of conversion made, all falls within the scope of protection of the utility model.

Claims (9)

1. minitype acoustic generator, including shell and the vibrational system and magnetic circuit system that are housed in the shell, the magnetic circuit system Including yoke, the central part of the yoke is sequentially provided with centring magnet and center magnetic conductive board, the four side edge point of the yoke Be not sequentially provided with while magnet and while magnetic conductive board, the position that each side magnet is corresponded in the side wall of the shell is equipped with installation Groove, each side magnet is respectively in the corresponding mounting groove, it is characterised in that positioned at described in the mounting groove sidepiece The side wall of shell is provided with the breach being recessed to the end of the side wall, and the side magnet and the yoke are enclosed in described lack respectively Two open sides of mouth, the breach form out acoustic aperture;The side-wall outer side close to it is described go out acoustic aperture position be provided with and concave Sunken storage tank, be fixed with the storage tank for cover it is described go out acoustic aperture damping screen.
2. minitype acoustic generator according to claim 1, it is characterised in that the depth of the storage tank is more than or equal to described The thickness of damping screen.
3. minitype acoustic generator according to claim 2, it is characterised in that the side surface of the side magnet and the yoke with The bottom land of the storage tank flushes.
4. minitype acoustic generator according to claim 3, it is characterised in that the damping screen be pasted onto simultaneously the side wall, On the side magnet and the yoke.
5. minitype acoustic generator according to claim 1, it is characterised in that it is described go out acoustic aperture be provided with two, spoken described in two Hole is arranged in the same side side wall of the shell, and is located at the both sides of the side magnet respectively.
6. minitype acoustic generator according to claim 1, it is characterised in that it is described go out acoustic aperture be provided with it is multiple, it is multiple it is described go out Acoustic aperture is separately positioned on three sides or four side side walls of the shell, or it is multiple it is described go out acoustic aperture be separately positioned on the shell In relative both sides side wall, or it is multiple it is described go out acoustic aperture be separately positioned in the adjacent both sides side wall of the shell.
7. minitype acoustic generator according to claim 1, it is characterised in that the sound of the vibrational system is corresponded in the yoke The position of the voice coil leads bending of circle is provided with the escape groove of depression.
8. minitype acoustic generator according to claim 1, it is characterised in that correspond to the vibrational system on the side magnetic conductive board Voice coil loudspeaker voice coil voice coil leads fair line track position be provided with depression glue groove.
9. minitype acoustic generator according to claim 1, it is characterised in that the upper edge position of the center magnetic conductive board is set There is the avoidance breach of depression.
CN201720589875.9U 2017-05-24 2017-05-24 Minitype acoustic generator Active CN206908833U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720589875.9U CN206908833U (en) 2017-05-24 2017-05-24 Minitype acoustic generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720589875.9U CN206908833U (en) 2017-05-24 2017-05-24 Minitype acoustic generator

Publications (1)

Publication Number Publication Date
CN206908833U true CN206908833U (en) 2018-01-19

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CN201720589875.9U Active CN206908833U (en) 2017-05-24 2017-05-24 Minitype acoustic generator

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108600921A (en) * 2018-04-28 2018-09-28 歌尔股份有限公司 Acoustical generator module
WO2019205659A1 (en) * 2018-04-27 2019-10-31 歌尔股份有限公司 Sound producing device, sound producing module, and electronic terminal
WO2020140165A1 (en) * 2018-12-30 2020-07-09 瑞声声学科技(深圳)有限公司 Loudspeaker single body

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019205659A1 (en) * 2018-04-27 2019-10-31 歌尔股份有限公司 Sound producing device, sound producing module, and electronic terminal
CN108600921A (en) * 2018-04-28 2018-09-28 歌尔股份有限公司 Acoustical generator module
CN108600921B (en) * 2018-04-28 2020-08-07 歌尔股份有限公司 Acoustic generator module
WO2020140165A1 (en) * 2018-12-30 2020-07-09 瑞声声学科技(深圳)有限公司 Loudspeaker single body

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