CN106954149B - Minitype acoustic generator - Google Patents
Minitype acoustic generator Download PDFInfo
- Publication number
- CN106954149B CN106954149B CN201710170295.0A CN201710170295A CN106954149B CN 106954149 B CN106954149 B CN 106954149B CN 201710170295 A CN201710170295 A CN 201710170295A CN 106954149 B CN106954149 B CN 106954149B
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- China
- Prior art keywords
- acoustic generator
- shell
- flange
- front cover
- side wall
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a kind of minitype acoustic generators, it is related to electro-acoustic product technical field, including combined shell and front cover, vibrational system and magnetic circuit system are contained in the space that the shell and the front cover surround, the vibrational system includes the vibrating diaphragm that edge part is fixed between the front cover and the shell, the front cover has side wall, the edge part includes that the fixed part and the flange being folded upward on the outside of the fixed part, the flange positioned inside are fixed on the outer surface of the side wall.Minitype acoustic generator of the present invention solves the technical issues of minitype acoustic generator poor waterproof properties in the prior art, and minitype acoustic generator waterproof performance of the present invention is good, the stability and high reliablity of waterproof, while acoustical behavior is good, long service life.
Description
Technical field
The present invention relates to electro-acoustic product technical field, in particular to a kind of minitype acoustic generator.
Background technique
Minitype acoustic generator is the important acoustic element of portable electronic device, for completing between electric signal and voice signal
Conversion, be a kind of energy conversion device.Existing minitype acoustic generator includes combined shell and front cover, and shell is with before
Cover in the space that surrounds and contain vibrational system and magnetic circuit system, the edge of vibrational system be fixed on shell and front cover it
Between, i.e. the edge of the vibrating diaphragm of vibrational system is fixed between shell and front cover.
Minitype acoustic generator is mounted in portable electronic device, when electronic equipment is fallen into water or is contacted in other forms
When to water, water can be through the going out on the vibrating diaphragm that acoustic aperture enters minitype acoustic generator from minitype acoustic generator of the acoustic aperture on electronic equipment casing
The space in portion enters in the space of the preceding operatic tunes of minitype acoustic generator, if poorly sealed between vibrating diaphragm and front cover, into
Entering to the water in the preceding operatic tunes from the inner cavity that gap between the two enters electronic equipment, can will lead to zero of electronic equipment
Part or circuit damage, therefore require minitype acoustic generator that there is preferable water-proof function.
Current water proof type minitype acoustic generator depends primarily on the sealing performance between vibrating diaphragm and front cover, this just needs to do
To two o'clock: first is that bonding glue will not be flooded profit failure；Second is that the rubber fabric between vibrating diaphragm and front cover is smooth and has certain
Width, rubber fabric is wider, and waterproof effect is better, but the width of rubber fabric influences whether effective vibration area of vibrating diaphragm, apply
Effective vibration area of the wider vibrating diaphragm of adhesive tape is smaller, will cause the loss of sensitivity, influences the acoustical behavior of minitype acoustic generator.And
And such anti-aqueous mode, highly dependent upon the quality of glue, once glue fails, water-proof function will be destroyed, minitype acoustic generator
Just no longer there is water-proof function.
Summary of the invention
For disadvantages described above, technical problem to be solved by the invention is to provide a kind of minitype acoustic generator, this miniature sounding
Device waterproof performance is good, the stability and high reliablity of waterproof, while acoustical behavior is high.
In order to solve the above technical problems, the technical scheme is that
The sky that a kind of minitype acoustic generator, including combined shell and front cover, the shell and the front cover surround
In contain vibrational system and magnetic circuit system, the vibrational system include edge part be fixed on the front cover and the shell it
Between vibrating diaphragm, the front cover has a side wall, the edge part include positioned inside fixed part and be located on the outside of the fixed part
The flange being folded upward at, the flange is fixed on the outer surface of the side wall.
Wherein, it is adhesively fixed between the upper surface of the fixed part and the lower end surface of the side wall by glue-line, it is described solid
Determine to be adhesively fixed between the lower surface in portion and the upper surface of the shell by glue-line, the outer surface of the flange and the side wall
Between be adhesively fixed by glue-line.
Wherein, it is fixed between the flange and the outer surface of the side wall by laser welding.
Wherein, the position that the outside of the side wall corresponds to the flange is equipped with the depressed area being recessed inwardly, the flange patch
It closes on the side surface of the depressed area.
Wherein, mounting groove is formed between the depressed area and the upper surface of the shell, is equipped with sealing in the mounting groove
Bullet circle, the sealing play snare in the outside of the flange.
Wherein, the outer surface three of the outer surface of the side wall, the outer surface of the sealing bullet circle and the side wall of outer shell
It flushes.
Wherein, the middle part injection molding of the front cover is combined with steel disc.
Wherein, the magnetic circuit system includes magnetic yoke, and the center of the magnetic yoke is successively fixed with internal magnet and interior magnetic conduction
Plate, the marginal position of the magnetic yoke are successively fixed with external magnet and outer magnetic conductive board.
Wherein, the outer edge of the outer magnetic conductive board is located at the outer peripheral inside of the external magnet, the inside of the shell
Positioning region equipped with hierarchic structure, the positioning region are adapted with the outer edge structure of the outer magnetic conductive board and the external magnet.
After above-mentioned technical proposal, the beneficial effects of the present invention are:
Since the edge part of the vibrating diaphragm of minitype acoustic generator of the present invention is fixed between front cover and shell, the edge part of vibrating diaphragm is wrapped
It includes fixed part and the flange being folded upward on the outside of fixed part, flange positioned inside and is fixed on the outside of front cover side wall.
The flange being folded upward at can play barrier effect to the water in the space for entering vibrating diaphragm top, while increase vibrating diaphragm and front cover
Bond area, even if horizontal plane between vibrating diaphragm and front cover is be bonded that imprecision or glue failure, water can be stopped back by flange
Come, the inside without entering electronic equipment by minitype acoustic generator plays the role of waterproof.The present invention passes through in vibrating diaphragm
The flange that is folded upward at is arranged in edge part, and flange is fixed on the outer surface of front cover side wall and realizes sealing, and existing
Glue adhering and sealing in technology, which is compared, to be had the advantage that
One, it uses and increases bond area in side, to not need very big bond area, Bu Huizhan in the horizontal plane
With the inner space of minitype acoustic generator, effective vibration area of vibrating diaphragm will not be reduced, be conducive to improve the sensitive of minitype acoustic generator
Degree, improves the acoustical behavior of minitype acoustic generator；
Two, without relying on the performance of glue, the stability and reliability of waterproof are greatly improved, and waterproof performance is high, sealing
Effect is good.
Since the position that the outside of front cover side wall corresponds to flange is equipped with depressed area, flange is bonded on the side of depressed area,
It can be avoided the outer surface that flange protrudes from side wall, not will increase the outer dimension of minitype acoustic generator, while flange can also be reduced
The risk peeled off from side wall is conducive to the stability and reliability that improve waterproof.
Due to forming mounting groove between depressed area and the upper surface of shell, it is equipped with sealing bullet circle in mounting groove, seals bullet circle
It covers in the outside of flange, sealing bullet circle itself is the performance with sealing waterproof, while it has elasticity, is risen on the outside to flange
To the effect tied tight, effectively avoids flange and peeled off from side wall, the further waterproof performance for improving minitype acoustic generator.
Since the outer edge of outer magnetic conductive board is located at the outer peripheral inside of external magnet, shell is equipped with outer magnetic conductive board and outside
The compatible positioning region of the outer edge structure of magnet.The edge of i.e. outer magnetic conductive board and the outer edge of external magnet form ladder knot
Structure, positioning region are compatible inverted steps structure, outer surface and upper surface with upper surface, outer magnetic conductive board on the outside of external magnet
It fits, positioning region plays positioning action when assembling minitype acoustic generator, while also increasing connecing for shell and magnetic circuit system
Contacting surface product, reduces the risk that magnetic circuit system falls off from shell, improves the reliability of minitype acoustic generator, extend miniature hair
The service life of sound device.
In conclusion the technology that minitype acoustic generator of the present invention solves minitype acoustic generator poor waterproof properties in the prior art is asked
Topic, minitype acoustic generator waterproof performance of the present invention is good, the stability and high reliablity of waterproof, while acoustical behavior is good, service life
It is long.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of minitype acoustic generator of the present invention；
Fig. 2 is the portion the A enlarged drawing of Fig. 1；
In figure: 10, shell, 12, positioning region, 20, front cover, 22, depressed area, 24, steel disc, 30, vibrating diaphragm, 300, flange, 32,
Oscillating plate, 34, voice coil, 40, magnetic yoke, 42, internal magnet, 44, external magnet, 46, interior magnetic conductive board, 48, outer magnetic conductive board, 49, magnetic gap,
50, bullet circle, 60, mounting groove are sealed.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.
The inside being related in this specification refers to that, close to the side at minitype acoustic generator center, outside refers to far from minitype acoustic generator
The side at center；Refer to the orientation for being equipped with vibrational system in the orientation being related to, refers to the orientation for being equipped with magnetic circuit system under orientation.
As shown in Figure 1, a kind of minitype acoustic generator, including shell 10 and it is incorporated in the front cover 20 of 10 upper end of shell, shell 10
Vibrational system and magnetic circuit system are contained in the space surrounded with front cover 20.Magnetic circuit system is fixed on the inside of shell 10, vibration
The edge part of system is fixed between the upper surface of shell 10 and the lower end surface of front cover 20.
As shown in Figure 1, vibrational system includes vibrating diaphragm 30, the middle part of vibrating diaphragm 30 is fixed with oscillating plate 32, in present embodiment
Oscillating plate 32 is fixed on the upside at 30 middle part of vibrating diaphragm, is fixed with voice coil 34 on the downside of the middle part of vibrating diaphragm 30.Magnetic circuit system includes magnetic
Yoke 40, magnetic yoke 40 are plate structure.The center of magnetic yoke 40 is successively fixed with internal magnet 42 and interior magnetic conductive board 46, magnetic yoke 40
Marginal position is fixed with external magnet 44 and outer magnetic conductive board 48.Internal magnet 42 and interior magnetic conductive board 46 constitute the internal magnetic circuit of magnetic circuit system,
External magnet 44 and outer magnetic conductive board 48 constitute the external magnetic circuit of magnetic circuit system, and magnetic gap 49, voice coil are equipped between internal magnetic circuit and external magnetic circuit
34 end is located in magnetic gap 49.Voice coil 34 is done back and forth according to by the sound wave electric signal in its coiling in magnetic gap 49
Cutting magnetic line movement instigate air sounding so that vibrating diaphragm 30 and oscillating plate 32 be driven to vibrate up and down, realize between electroacoustic
Energy conversion.The middle part injection molding of front cover 20 is combined with steel disc 24, and steel disc 24 is equipped with acoustic aperture (not shown), vibrating diaphragm 30
And oscillating plate 32 instigates the sound of air sending from going out at acoustic aperture to external radiation.
As Fig. 1 and Fig. 2 jointly shown in, front cover 20 have side wall, the edge part of vibrating diaphragm 30 constitutes the edge of vibrational system
Portion, this edge part include the fixed part positioned inside and the flange 300 being folded upward on the outside of fixed part, fixed part clamping
It is fixed between the side wall lower ends face of front cover 20 and the upper surface of shell 10, the upper surface of fixed part is adhesively fixed on by glue-line
On the lower end surface of the side wall of front cover 20, the lower surface of fixed part is adhesively fixed on the upper surface of shell 10 by glue-line, flange
On the outer surface of 300 side walls that can be adhesively fixed on front cover 20 by glue-line, front cover 20 can also be fixed on by laser welding
Side wall outer surface on, i.e. the edge part of vibrating diaphragm 30 protrudes horizontally up the side wall of front cover 20 and is folded upward at along the outer surface of side wall
Extend, flange 300 can play barrier effect to the water for entering 30 top of vibrating diaphragm.
As Fig. 1 and Fig. 2 jointly shown in, the side-wall outer side of front cover 20 correspond to flange 300 position be equipped be recessed inwardly it is recessed
Area 22 is fallen into, flange 300 is bonded on the side surface of depressed area 22.One is formed between depressed area 22 and the upper surface of shell 10
The annular mounting groove 60 of outward opening.It is equipped with sealing bullet circle 50 in mounting groove 60, seals 50 sets of the bullet circle outsides in flange 300,
After sealing bullet circle 50 is installed in mounting groove 60, the wall outer surface of front cover 20, the outer surface for sealing bullet circle 50 and shell 10
Wall outer surface three flushes.Natural rubber, nitrile rubber, neoprene rubber can be selected in the material that bullet circle 50 is sealed in present embodiment
Glue, fluorubber or silicon rubber etc., but be not limited to it is above-mentioned several, as long as the material with elasticity and with waterproof performance is equal
It can.Sealing bullet circle 50 itself is the performance with waterproof, while it can be avoided flange 300 from the sidewall surfaces of front cover 20
It peels off, further improves the stability and reliability of waterproof.
As shown in Figure 1, the width of outer magnetic conductive board 48 be less than external magnet 44 width, and the inward flange of outer magnetic conductive board 48 and
The inward flange of external magnet 44 is substantially flush, then the outer edge of outer magnetic conductive board 48 is located at the outer peripheral inside of external magnet 44, i.e., outer
Magnetic conductive board 48 makes the outer edge of magnetic circuit system form positive hierarchic structure after being combined with external magnet 44.The inside of shell 10 is equipped with
With determining for the compatible inverted steps structure of positive hierarchic structure of the outer edge of the outer edge of outer magnetic conductive board 48 and external magnet 44 formation
Position portion 12, i.e. positioning region 12 are buckled on outer magnetic conductive board 48 and external magnet 44, outer upper surface, outer magnetic conductive board 48 with external magnet 44
Side surface and the upper surface of outer magnetic conductive board 48 fit, the combination that can effectively enhance between magnetic circuit system and shell 10 is strong
Degree, prevents magnetic circuit system from falling off from shell 10.
The present invention is folded upward at by will be folded upward on the wall outer surface for being fixed on front cover on the outside of the edge part of vibrating diaphragm
Flange can play barrier effect to the water in the space for entering vibrating diaphragm top, even if the horizontal plane between vibrating diaphragm and front cover is viscous
Imprecision or glue failure are connect to obtain, water can be stopped to return by flange, without being entered in electronic equipment by minitype acoustic generator
Portion plays the role of waterproof；The sensitivity that also will not influence minitype acoustic generator simultaneously is conducive to the sound for improving minitype acoustic generator
Learn performance.
This specification is only that technical solution of the present invention is illustrated by taking the minitype acoustic generator of above structure as an example,
Technical solution of the present invention is not limited in the minitype acoustic generator of above structure in practical application, can be applied to any one
In the minitype acoustic generator of water proof type, those skilled in the art does not need to pay any creation according to the elaboration of above-described embodiment
Technical solution of the present invention can be applied in the minitype acoustic generator of other structures by the labour of property, thus no matter minitype acoustic generator
Other structures it is whether identical with above-described embodiment, as long as the edge part of vibrating diaphragm is folded upward to realize waterproof sealing,
Product to improve waterproof performance is fallen within the protection scope of the present invention.
The present invention is not limited to above-mentioned specific embodiment, those skilled in the art from the above idea,
Without creative labor, the various transformation made are within the scope of the present invention.
Claims (7)
1. being received in the space that minitype acoustic generator, including combined shell and front cover, the shell and the front cover surround
Have vibrational system and magnetic circuit system, the vibrational system includes the vibration that edge part is fixed between the front cover and the shell
Film, which is characterized in that the front cover has side wall, and the edge part includes positioned at the fixed part of inside and positioned at the fixed part
The flange being folded upward in outside, the flange are fixed on the outer surface of the side wall；
The position that the outside of the side wall corresponds to the flange is equipped with the depressed area being recessed inwardly, and the flange is fitted in described recessed
It falls on the side surface in area；Mounting groove is formed between the depressed area and the upper surface of the shell, is equipped in the mounting groove close
Bullet circle is sealed, the sealing plays snare in the outside of the flange.
2. minitype acoustic generator according to claim 1, which is characterized in that the upper surface of the fixed part and the side wall
It is adhesively fixed between lower end surface by glue-line, it is viscous by glue-line between the lower surface of the fixed part and the upper surface of the shell
Fixation is connect, is adhesively fixed between the flange and the outer surface of the side wall by glue-line.
3. minitype acoustic generator according to claim 1, which is characterized in that between the flange and the outer surface of the side wall
It is fixed by laser welding.
4. minitype acoustic generator according to claim 1, which is characterized in that the outer surface of the side wall, the sealing bullet circle
Outer surface and the outer surface three of the side wall of outer shell flush.
5. according to claim 1 to minitype acoustic generator described in 4 any claims, which is characterized in that the middle part of the front cover
Injection molding is combined with steel disc.
6. according to claim 1 to minitype acoustic generator described in 4 any claims, which is characterized in that the magnetic circuit system packet
Magnetic yoke is included, the center of the magnetic yoke is successively fixed with internal magnet and interior magnetic conductive board, and the marginal position of the magnetic yoke is successively solid
Surely there are external magnet and outer magnetic conductive board.
7. minitype acoustic generator according to claim 6, which is characterized in that the outer edge of the outer magnetic conductive board is located at described outer
The outer peripheral inside of magnet, the inside of the shell are equipped with the positioning region of hierarchic structure, the positioning region and the outer magnetic conduction
The outer edge structure of plate and the external magnet is adapted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170295.0A CN106954149B (en) | 2017-03-21 | 2017-03-21 | Minitype acoustic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170295.0A CN106954149B (en) | 2017-03-21 | 2017-03-21 | Minitype acoustic generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106954149A CN106954149A (en) | 2017-07-14 |
| CN106954149B true CN106954149B (en) | 2019-10-08 |
Family
ID=59472744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710170295.0A Active CN106954149B (en) | 2017-03-21 | 2017-03-21 | Minitype acoustic generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN106954149B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418259B (en) * | 2018-04-27 | 2022-06-14 | 歌尔股份有限公司 | Sound production device monomer, sound production module and electronic terminal |
| CN110248295B (en) * | 2019-06-27 | 2021-02-19 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| WO2021000096A1 (en) * | 2019-06-29 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Speaker |
| CN111464924A (en) * | 2019-12-25 | 2020-07-28 | 瑞声科技(新加坡)有限公司 | Sound generator |
| WO2022006807A1 (en) * | 2020-07-09 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
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| JP2002223494A (en) * | 2001-01-25 | 2002-08-09 | Citizen Electronics Co Ltd | Speaker |
| JP2008141317A (en) * | 2006-11-30 | 2008-06-19 | Sanyo Electric Co Ltd | Speaker |
| JP2011142502A (en) * | 2010-01-07 | 2011-07-21 | Hosiden Corp | Compact loudspeaker |
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| CN205622868U (en) * | 2016-04-06 | 2016-10-05 | 歌尔股份有限公司 | Speaker monomer structure |
| CN106257937A (en) * | 2016-04-29 | 2016-12-28 | 歌尔股份有限公司 | A kind of sound-producing device and the preparation method of metal plastic part |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10123121B2 (en) * | 2015-01-09 | 2018-11-06 | Sony Corporation | Water proof speaker device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002223494A (en) * | 2001-01-25 | 2002-08-09 | Citizen Electronics Co Ltd | Speaker |
| JP2008141317A (en) * | 2006-11-30 | 2008-06-19 | Sanyo Electric Co Ltd | Speaker |
| JP2011142502A (en) * | 2010-01-07 | 2011-07-21 | Hosiden Corp | Compact loudspeaker |
| CN204231661U (en) * | 2014-11-25 | 2015-03-25 | 歌尔声学股份有限公司 | A kind of loud speaker |
| CN105704625A (en) * | 2014-12-15 | 2016-06-22 | 易音特电子株式会社 | Slim microspeaker |
| CN205622868U (en) * | 2016-04-06 | 2016-10-05 | 歌尔股份有限公司 | Speaker monomer structure |
| CN106257937A (en) * | 2016-04-29 | 2016-12-28 | 歌尔股份有限公司 | A kind of sound-producing device and the preparation method of metal plastic part |
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| Publication number | Publication date |
|---|---|
| CN106954149A (en) | 2017-07-14 |
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