CN205847580U - Speaker - Google Patents
Speaker Download PDFInfo
- Publication number
- CN205847580U CN205847580U CN201620769526.0U CN201620769526U CN205847580U CN 205847580 U CN205847580 U CN 205847580U CN 201620769526 U CN201620769526 U CN 201620769526U CN 205847580 U CN205847580 U CN 205847580U
- Authority
- CN
- China
- Prior art keywords
- voice coil
- speaker
- coverlay
- flexible pcb
- epoxy resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
This utility model provides a kind of speaker.Described speaker includes having the frame of receiving space, the magnetic circuit system being contained in described frame, be immobilizated in the vibrational system with voice coil loudspeaker voice coil of described frame and electrically connect with described voice coil loudspeaker voice coil and for carrying the flexible PCB of described voice coil loudspeaker voice coil, described flexible PCB includes conductive layer and is attached at the coverlay of described conductive layer two apparent surface, and described coverlay is damping adhesive type coverlay.Compared with correlation technique, this utility model provides a kind of speaker with flexible PCB, and described speaker solves flexible PCB and in use impacts due to resonance that pure tone that sound film causes is bad and the problem of self-inflicted injury.
Description
[technical field]
This utility model relates to electroacoustic conversion art, particularly relates to a kind of speaker.
[background technology]
Along with the fast development of science and technology, the popularity rate of audio frequency apparatus is more and more higher, and people are to the requirement of audio frequency apparatus not only
It is only limitted to the broadcasting of video/audio, more requires that the reliability to audio frequency apparatus proposes more requirements.The arrival in especially 4G epoch,
Technology of Mobile Multimedia develops the most therewith, and a lot of audio frequency apparatuses have multiple amusement function, such as video playback, digital vedio recording, trip
Play, GPS navigation etc., the electronic devices and components being desirable that in audio frequency apparatus are more and more accurate and compact, but, electronic devices and components are more
Many, the reliability of audio frequency apparatus is the poorest.
And in audio frequency apparatus, speaker is exactly a kind of conventional electronic devices and components, it is mainly used in the broadcasting of audio signal.
Speaker includes loudspeaker vibration unit, and loudspeaker vibration unit be frequently used flexible PCB to be electrically connected with speaker and
External circuit.In correlation technique, industry is common epoxy glue-type or the covering of acrylic glue-type for the coverlay of flexible PCB
Film, the material loss factor characterizing its damping characteristic is less than 0.4, because dynamic magnifier and material loss factor exist anti-phase
Close, less material loss factor make speaker in vibration processes, the flexible PCB being made up of this common coverlay
Easily cause resonance, thus amplitude excessive impact sound film, cause pure tone bad, cause flexible circuit dash-board injury finally to cause to break simultaneously
Split, cause speaker fail.
Therefore, it is necessary to provide a kind of novel speaker to solve above-mentioned technical problem.
[utility model content]
The purpose of this utility model is to provide a kind of pure tone quality promoting described speaker and the novel of reliability to raise
Sound device.
This utility model provides a kind of speaker, including the frame with receiving space, the magnetic that is contained in described frame
Road system, it is immobilizated in the vibrational system with voice coil loudspeaker voice coil of described frame and electrically connects with described voice coil loudspeaker voice coil and for carrying described voice coil loudspeaker voice coil
Flexible PCB, described flexible PCB includes conductive layer and is attached at the coverlay of described conductive layer two apparent surface, institute
Stating coverlay is damping adhesive type coverlay.
Preferably, described flexible PCB is the flexible PCB that fissipation factor is more than 0.7.
Preferably, described damping adhesive type coverlay is the covering that fiber reinforced epoxy resin damp composite material is made
Film.
Preferably, described damping adhesive type coverlay is the coverlay that polyurethane/epoxy resin composites is made.
Preferably, described damping adhesive type coverlay is polyacrylic fibre (PP)/epoxy resin (EP) and poly-third
The coverlay that alkene fiber-sulfhydryl modified propylene vinylacetate (PP2EBASH)/epoxy resin composite material is made.
Preferably, described damping adhesive type coverlay is covering of making of inorganic filler/epoxy resin damp composite material
Epiphragma.
Preferably, described conductive layer is layers of copper.
Preferably, described magnetic circuit system includes the first magnet portion and the second magnet portion, and the second magnet portion is around described first
Magnet portion arranges also and forms magnetic gap between described first magnet portion.
Preferably, described vibrational system also includes sound film and top dome, and described magnetic gap, the other end are inserted in described voice coil loudspeaker voice coil one end
Being fixed in described sound film, described sound film is just to described magnetic circuit system, and described top dome is fixedly arranged on described sound film away from described magnetic circuit system
The side of system.
Compared with correlation technique, having the beneficial effects that of the speaker that this utility model provides: described in described speaker
Flexible PCB includes conductive layer and is attached at the coverlay of described conductive layer two apparent surface, described coverlay use loss because of
The damping adhesive type coverlay that son is bigger, improves the fissipation factor of described flexible PCB, solves flexible PCB and exist
Impact due to resonance during use that pure tone that sound film causes is bad and the problem of self-inflicted injury.
[accompanying drawing explanation]
The decomposing schematic representation of the speaker that Fig. 1 provides for this utility model；
Fig. 2 is the structural representation of the flexible PCB of speaker shown in Fig. 1；
Fig. 3 is the Rotating fields schematic diagram of the arm of force in flexible PCB shown in Fig. 2.
[detailed description of the invention]
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model some embodiments rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1, for the decomposing schematic representation of the speaker that this utility model provides.Described speaker includes having collecting
The frame 1 in space, the magnetic circuit system 3 being contained in described frame 1, the vibrational system 5 being immobilizated in described frame 1 and flexible circuit
Plate 7.
Described frame 1 entirety is the rectangle of hollow.
Described magnetic circuit system 3 includes lower plate the 31, first magnet portion the 33, second magnet portion 35 and train wheel bridge 37.Under described
Clamping plate 31 are to be immobilizated in the flat board bottom described frame 1, and after described lower plate 31 is immobilizated in described frame 1, described first
Magnet portion 33 and described second magnet portion 35 are attached at described lower plate 31, and described second magnet portion 35 is around described first magnet
Portion 33 arranges also and forms magnetic gap between described first magnet portion 33, states train wheel bridge 37 and is stacked at described second magnet portion 35 also
It is immobilizated in the top of described frame 1.
Described first magnet portion 33 is main magnet steel, and described second magnet portion 35 is secondary magnet steel, and it includes being arranged at described the
The secondary magnet steel 351 of the first of one 33 liang of major axis limits of magnet portion and the be arranged at described 33 liang short axle limits of first magnet portion second secondary magnet steel
353。
Described vibrational system 5 includes voice coil loudspeaker voice coil 51, sound film 53 and top dome 55.Described first magnetic is inserted in one end of described voice coil loudspeaker voice coil 51
In the magnetic gap formed between body 33 and described second magnet portion 35, its other end is fixed in described sound film 53, described sound film
53 just to described magnetic circuit system 3 and be consolidated in described frame 1, and described top dome 55 is fixedly arranged on described sound film 53 away from described magnetic circuit system
The side of system 3.After described voice coil loudspeaker voice coil 51 is energized, described voice coil loudspeaker voice coil 51 can vibrate, with this under the effect in described magnetic circuit system 3 magnetic field
Meanwhile, described voice coil loudspeaker voice coil 51 drives described sound film 53 together to vibrate.
Referring to Fig. 2, wherein, Fig. 2 is the structural representation of the flexible PCB of speaker shown in Fig. 1, described flexible electrical
Road plate 7 electrically connects with described voice coil loudspeaker voice coil 51 and is used for voice coil loudspeaker voice coil 51 described in elastic carrier, and described flexible PCB 7 is connected to described basin
The bottom of frame 1.Described flexible PCB 7 includes first fixed part the 71, second fixed part 73 and connects described first fixed part 71
With the arm of force 75 of described second fixed part 73, described second fixed part 73 is connected with described voice coil loudspeaker voice coil 51.
Referring to Fig. 3, wherein, Fig. 3 is the Rotating fields schematic diagram of the arm of force in flexible PCB shown in Fig. 2.The described arm of force 75
Including conductive layer 751 and the coverlay 753 that is attached at described 751 liang of apparent surfaces of conductive layer.
Described conductive layer 751 is layers of copper, and the thickness of described layers of copper is 0.1-0.3mm.
Described coverlay 753 is damping adhesive type coverlay.
Described damping adhesive type coverlay can be by fiber reinforced epoxy resin damp composite material, polyurethane/epoxy
Resin composite materials, polyacrylic fibre/epoxy resin is multiple and material, polypropylene fibre-sulfhydryl modified propylene vinyl acetate/
Any one material in epoxy resin composite material and inorganic filler/epoxy resin damp composite material is made.In this enforcement
In example, described gluing dosage form coverlay is not limited to the coverlay made for above several types of materials.By pasting in layers of copper
If damping adhesive type coverlay, making the fissipation factor of described flexible PCB 7 more than 0.7, it is than normal flexible circuit board
Fissipation factor improves more than 75%.
The Rotating fields of described first fixed part 71, described second fixed part 73 and the described arm of force 75 is identical, and the material of each layer
Material is all corresponding identical, and the Rotating fields making the described flexible PCB 7 of formation is three layers, respectively conductive layer and leading described in being attached at
The coverlay of electric layer two apparent surface.
Compared with correlation technique, having the beneficial effects that of the speaker 100 that this utility model provides: described speaker 100
Described in flexible PCB 7 include conductive layer 751 and be attached at the coverlay 753 of described 751 liang of apparent surfaces of conductive layer, described
Coverlay 753 uses the damping adhesive type coverlay that fissipation factor is bigger, improve the loss of described flexible PCB 7 because of
Son, solve described flexible PCB 7 in use impact due to resonance pure tone that described sound film 53 causes bad with
And the problem of self-inflicted injury.
Above-described is only embodiment of the present utility model, it should be noted here that for the ordinary skill of this area
For personnel, on the premise of creating design without departing from this utility model, it is also possible to make improvement, but these belong to this practicality
Novel protection domain.
Claims (9)
1. a speaker, described in having the frame of receiving space, the magnetic circuit system being contained in described frame, being immobilizated in
The vibrational system with voice coil loudspeaker voice coil of frame and electrically connecting with described voice coil loudspeaker voice coil and for carrying the flexible PCB of described voice coil loudspeaker voice coil, it is special
Levy and be: described flexible PCB includes conductive layer and is attached at the coverlay of described conductive layer two apparent surface, described covering
Film is damping adhesive type coverlay.
Speaker the most according to claim 1, it is characterised in that: described flexible PCB is that fissipation factor is more than 0.7
Flexible PCB.
Speaker the most according to claim 1 and 2, it is characterised in that: described damping adhesive type coverlay is that fiber increases
The coverlay that strong epoxy resin damp composite material is made.
Speaker the most according to claim 1 and 2, it is characterised in that: described damping adhesive type coverlay be polyurethane/
The coverlay that epoxy resin composite material is made.
Speaker the most according to claim 1 and 2, it is characterised in that: described damping adhesive type coverlay is polypropylene
Acid fiber/epoxy resin and polypropylene fibre-sulfhydryl modified propylene vinylacetate/epoxy resin composite material are made
Coverlay.
Speaker the most according to claim 1 and 2, it is characterised in that: described damping adhesive type coverlay is inorganic filling out
The coverlay that material/epoxy resin damp composite material is made.
Speaker the most according to claim 1, it is characterised in that: described conductive layer is layers of copper.
Speaker the most according to claim 1, it is characterised in that: described magnetic circuit system includes the first magnet portion and the second magnetic
Body, described second magnet portion arranges also around described first magnet portion and forms magnetic gap between described first magnet portion.
Speaker the most according to claim 8, it is characterised in that: described vibrational system also includes sound film and top dome, described
Described magnetic gap is inserted in voice coil loudspeaker voice coil one end, and the other end is fixed in described sound film, and described sound film is just to described magnetic circuit system, described top dome
It is fixedly arranged on the described sound film side away from described magnetic circuit system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620769526.0U CN205847580U (en) | 2016-07-21 | 2016-07-21 | Speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620769526.0U CN205847580U (en) | 2016-07-21 | 2016-07-21 | Speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205847580U true CN205847580U (en) | 2016-12-28 |
Family
ID=57625266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620769526.0U Expired - Fee Related CN205847580U (en) | 2016-07-21 | 2016-07-21 | Speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205847580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982217A (en) * | 2019-04-01 | 2019-07-05 | 深圳市信维声学科技有限公司 | A kind of Microspeaker |
-
2016
- 2016-07-21 CN CN201620769526.0U patent/CN205847580U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982217A (en) * | 2019-04-01 | 2019-07-05 | 深圳市信维声学科技有限公司 | A kind of Microspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20210721 |