CN109246561A - Sounding device and electronic equipment - Google Patents
Sounding device and electronic equipment Download PDFInfo
- Publication number
- CN109246561A CN109246561A CN201811204970.8A CN201811204970A CN109246561A CN 109246561 A CN109246561 A CN 109246561A CN 201811204970 A CN201811204970 A CN 201811204970A CN 109246561 A CN109246561 A CN 109246561A
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- Prior art keywords
- cantilever
- buffer layer
- sounding device
- thermoplastic elastomer
- layer
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention discloses a kind of sounding device and electronic equipments.The device includes vibrational system and the magnetic circuit system that matches with vibrational system, centring disk includes centrally located central part and the edge part positioned at periphery, support portion is equipped between central part and edge part, voice coil includes body part and the lead by body part extraction, body part includes two opposite extraction sides and two opposite free margins, centring disk includes drawing with two at corresponding two first, two the second sides corresponding with two free margins, support portion include be located at two first in the first upper cantilever and when being located at two second on the second cantilever, lead is drawn outward along the extending direction of the first cantilever and is fixedly connected with the first cantilever, first cantilever has additional buffer layer compared to the second cantilever.
Description
Technical field
This disclosure relates to which electroacoustic switch technology field, more particularly, to a kind of sounding device and applies the sounding
The electronic equipment of device.
Background technique
As mobile phone SMART-PA (intelligent power output amplification system) develops, it is desirable that loudspeaker can be (such as big under severe conditions
Amplitude) it uses and guarantees reliable performance.This requires loudspeaker have higher acoustical behavior and can satisfy it is higher can
By property.The scheme that the lead of voice coil is drawn and fixed along the cantilever of centring disk makes centring disk have both certralizing ability and drop
The effect of low complete machine broken string risk.
In existing loudspeaker, a plurality of cantilever of centring disk all uses identical material.For example, single layer polyimides (PI)
Or the structure that multilayer polyimide (PI) is compound.However, due to lead itself weight and pull power so that anchor leg
Cantilever bears bigger load and shock.This will affect the certralizing ability of centring disk, cause the polarization of vibrational system.
Accordingly, it is desirable to provide a kind of new technical solution is to solve the above technical problems.
Summary of the invention
One purpose of the disclosure is to provide a kind of new solution of sounding device.
According to one aspect of the disclosure, a kind of sounding device is provided.The device include vibrational system and with the vibration
The magnetic circuit system that dynamic system matches, wherein the vibrational system includes centring disk and voice coil, and the centring disk includes position
In center central part and between the edge part of periphery, the central part and the edge part be equipped with support portion, the sound
It enclosing and is fixed on the central part along axial one end, the voice coil includes body part and the lead drawn by the body part,
The body part includes two opposite extraction sides and two opposite free margins, and the lead on two extraction sides respectively by drawing
Out, the centring disk includes drawing with two at corresponding two first, two the second sides corresponding with two free margins,
The support portion include be located at two first in the first upper cantilever and when being located at two second on it is second outstanding
Arm, the lead are drawn outward along the extending direction of first cantilever and are fixedly connected with first cantilever, described first
Cantilever has additional buffer layer compared to the second cantilever.
Optionally, the buffer layer is damping glue-line；Alternatively, the buffer layer is thermoplastic elastomer；Alternatively, described
Buffer layer is the composite construction for damping glue-line and thermoplastic elastomer.
Optionally, the buffer layer is damping glue-line；Alternatively, the buffer layer is damping glue-line and thermoplastic elastomer
Composite construction；The damping glue-line is at least one of acrylate glue and silica gel.
Optionally, the buffer layer is thermoplastic elastomer alternatively, the buffer layer is damping glue-line and thermoplastic elastomehc
The composite construction of property body layer；The material of the thermoplastic elastic layer includes polyester-type thermoplastic elastomer, polyurethane-type thermoplastic
Elastomer, polyamide-type thermoplastic elastomer, polystyrene-type thermoplastic elastomers, polyolefins thermoplastic elastomer, dynamic
At least one of vulcanized rubber and thermoplastic blends type thermoplastic elastomer (TPE).
Optionally, the buffer layer is the surface structure positioned at first cantilever.
Optionally, first cantilever and the second cantilever include the first plastic basis material layer, and first cantilever further includes covering
The buffer layer being placed on the first plastic basis material layer and the second plastic basis material layer being covered on the buffer layer.
Optionally, each first side includes first cantilever, and two first cantilevers are relative to the centering
The geometric center of branch piece is centrosymmetric setting.
Optionally, each first side includes first cantilever, and each second side includes described in two
Second cantilever, at least one described second while two upper second cantilevers relative to this second while perpendicular bisector it is mutually right
Claim.
Optionally, the material of at least one of the first plastic basis material layer and described second plastic basis material layer be PI,
At least one of PU, PEI, PEEK, PPS and PEN.
A kind of electronic equipment another aspect of the present disclosure provides.The equipment includes apparatus casing and above-mentioned hair
Acoustic device, the sounding device are arranged in the apparatus casing.
According to one embodiment of the disclosure, which has the characteristics that unfailing performance is good.
By the detailed description referring to the drawings to the exemplary embodiment of the disclosure, the other feature of the disclosure and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the exploded view according to the sounding device of one embodiment of the disclosure.
Fig. 2-3 is the cross-sectional view of the first cantilever according to an embodiment of the present disclosure.
Fig. 4 is the installation diagram of the centring disk and coil according to one embodiment of the disclosure.
Fig. 5 is the installation diagram according to another angle of the centring disk and coil of one embodiment of the disclosure.
Description of symbols:
10: centring disk；11: the first cantilevers；12: the second cantilevers；13: drawing side；14: free margins；15: central part；16:
Edge part；17: lead；18a: the first plastic basis material layer；18b: the second plastic basis material layer；19: thermoplastic elastomer；20: mending
Strong layer；21: vibrating diaphragm；22: voice coil；23: vacancy section；25: shell；26: permanent magnet；27: conductive magnetic yoke；28: pad；29: damping glue
Layer.
Specific embodiment
The various exemplary embodiments of the disclosure are described in detail now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
Scope of disclosure.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the disclosure
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
According to one embodiment of the disclosure, a kind of sounding device is provided.As shown in Figure 1, the device includes vibration system
System and the magnetic circuit system cooperated with vibrational system.The sounding device can be, but not limited to, loudspeaker monomer, earphone etc..
Magnetic circuit system is used to form magnetic field.Magnetic circuit system includes permanent magnet 26 and conductive magnetic yoke 27.Permanent magnet 26, which is fixed on, leads
In magnetic yoke 27, for example, being fixed by glue.In this example embodiment, permanent magnet 26 includes centring magnet and is arranged around centring magnet
Side magnet.Magnetic gap is formed between centring magnet and side magnet.Magnetic conductive board is respectively arranged on centring magnet and side magnet.
Certainly, magnetic circuit system is not limited to the above embodiments, can be with other structures commonly used by setup cost field.For example, permanent magnet
26 be annular magnet；Magnetic circuit system is internal magnetic circuit structure or external magnetic circuit structure etc..
Vibrational system includes voice coil 22, centring disk 10, vibrating diaphragm 21 and strengthening course 20.Centring disk 10 is by insulating materials system
At.Centring disk 10 includes centrally located central part 15 and the edge part 16 positioned at periphery.Central part 15 and edge part 16 it
Between be equipped with support portion.
Support portion is capable of providing elastic anchorage force, to prevent vibrational system from polarizing.Voice coil 22 is along axial one end
It is fixed on central part 15.For example, centring disk 10 is fixed on one end of the close vibrating diaphragm 21 of voice coil 22 or far from vibrating diaphragm
21 one end.Voice coil 22 is inserted into magnetic gap.Central part 15 is fixedly connected with the middle part of vibrating diaphragm 21.It is also set at the middle part of vibrating diaphragm 21
It is equipped with strengthening course 20.Edge part 16 is fixed on the shell 25 of sounding device or the side wall of the conductive magnetic yoke 27 of magnetic circuit system.
For example, being fixed by glue.Material commonly used in the art can be selected in glue for bonding.
In this example embodiment, as shown in Figure 1, the body part of voice coil include opposite two extraction sides 13 and opposite two from
By side 14.Lead 17 on two extraction sides 13 respectively by drawing.Centring disk 10 includes two corresponding with two extraction sides 13
First side, two the second sides corresponding with two free margins 14.
As shown in figure 4, support portion includes the first cantilever 11 being located on two the first sides and is located at two
The second cantilever 12 on second side.Lead 17, which is drawn outward along the extending direction of the first cantilever 11 and fixed with the first cantilever 11, to be connected
It connects.First cantilever 11 has additional buffer layer compared to the second cantilever 12.
The type of being in line, arc line shaped, wave linear shape etc. can be set in first cantilever 11 and the second cantilever 12.Extending direction refers to
The trend substantially of first cantilever 11.First cantilever 11 can be parallel to the corresponding sides of central part 15 and edge part 16, can also be with
With two corresponding sides in the angle of setting.
Optionally, buffer layer is damping glue-line 29.Damping glue-line 29 has good damping.For example, damping glue-line
29 be at least one of acrylate glue and silica gel.Above-mentioned material all has good damping, can be effectively reduced hair
The noise of acoustic device.
Being also possible to buffer layer is thermoplastic elastomer 19.Thermoplastic elastomer 19 has good elasticity.Example
Such as, the material of thermoplastic elastic layer 19 includes polyester-type thermoplastic elastomer, polyurethane-type thermoplastic elastomer, polyamide-based heat
Thermoplastic elastic, polystyrene-type thermoplastic elastomers, polyolefins thermoplastic elastomer, dynamic perduren and thermoplasticity modeling
Expect at least one of blend type thermoplastic elastomer (TPE).Above-mentioned material can improve the elasticity and rigidity of the first cantilever.
It is also possible that buffer layer is the composite construction for damping glue-line 29 and thermoplastic elastomer 19.Damp 29 He of glue-line
Thermoplastic elastomer 19 is as previously described.The composite construction has both good damping, elasticity and rigidity, so as to more have
Effect ground improves damping, elasticity and the rigidity of the first cantilever, improves the reliability of centring disk 10, reduces the miscellaneous of sounding device
Sound.
In embodiment of the disclosure, buffer layer has good elasticity and damping, can play the role of buffering,
Interaction force when to effectively be buffered in vibration between lead 17 and the first cantilever 11, and reduce stress concentration.
Stress when this vibrates lead 17 with the first cantilever 11 is uniformly dispersed, and is reduced the broken string risk of lead 17, is improved hair
The reliability surplus of acoustic device.
In one example, buffer layer is the surface structure positioned at the first cantilever 11.Under normal conditions, surface structure holds
Fatigue damage easily occurs.In this example embodiment using buffer layer as the surface structure of the first cantilever 11, it is arranged relative to by buffer layer
In the middle layer of the first cantilever 11, this setup makes the damping capacity of the first cantilever 11 and elasticity more excellent.
In one example, as shown in Fig. 2, the first cantilever 11 and the second cantilever 12 include the first plastic basis material layer 18a.The
One cantilever 11 further includes the buffer layer being covered on the first plastic basis material layer 18a and the second plastics base being covered on buffer layer
Material layer 18b.
Optionally, the material of at least one of first plastic basis material layer 18a and the second plastic basis material layer 18b be PI, PU,
At least one of PEI, PEEK, PPS and PEN.Buffer layer is thermoplastic elastomer 19.Above-mentioned material all has good resistance to
High-temperature behavior, so that centring disk 10 keeps good elastic anchorage force for a long time, under large amplitude operating condition.
Structure shown in Fig. 3 includes as the first plastic basis material layer 18a and the second plastic basis material layer 18b on surface layer and position
In buffer layer between the two.Buffer layer includes two layers of damping glue-line 29 and the thermoplastic elastomehc between two layers of damping glue-line 29
Property body layer 19.First cantilever is likewise supplied with good damping capacity, elasticity and rigidity.
In one example, as illustrated in figures 4-5, each first side includes first cantilever 11.Two the first cantilevers 11
Geometric center relative to centring disk 10 is centrosymmetric setting.Centrosymmetric mode makes lead 17 for centring disk
10 pull effect it is more balanced, relative to by outlet and enter line is drawn from same position or from same side extraction, in this way, vibrate
The amplitude of system is more balanced, to more effectively inhibit polarization.
In one example, each first side includes first cantilever 11.Each second side includes two the second cantilevers
12.At least one second while two upper the second cantilevers 12 relative to this second while perpendicular bisector it is symmetrical.Multiple second is outstanding
Arm 12 is capable of providing multi-point support.And since two the second cantilevers 12 are symmetrical therefore centring disk 10 can be effectively inhibited
Torsion, offset etc. in vibration, guarantee that centring disk 10 is of reciprocating vibration along direction of vibration, to restrained effectively vibration system
The polarization of system.
Certainly, the quantity of the second cantilever 12 can also be 4,6,8 etc., and the perpendicular bisector phase relative to the second side
Mutually symmetrical, the disclosure does not limit this.
In one example, centring disk 10 is integrally formed.For example, central part 15, edge part 16, the first cantilever 11
The structure of setting is formed by modes such as, punchings clipped with a piece of composite material film layer with the second cantilever 12.In central part 15, side
Material is gone to handle between edge 16, the first cantilever 11 and the second cantilever 12, to form vacancy section 23.It should be noted that in shape
At the position of the second cantilever 12, not set buffer layer.
It is also possible that plastic basis material layer and buffer layer to be first prepared into the shape of setting according to actual needs, then again will
Plastic basis material layer and buffer layer are combined with each other.
In other examples, the first cantilever 11 of centring disk 10 and the second cantilever 12, central part 15, edge part 16 material
Matter is different.In production, the first cantilever 11, the second cantilever 12, central part 15 and edge part 16 are first made respectively, then by four
Part adhesive together, to form centring disk 10.
Certainly, the production of centring disk 10 is not limited to the above embodiments, and those skilled in the art can be according to actual needs
It is selected.
In one example, as shown in Figure 1, sounding device further includes cricoid shell 25.For example, shell 25 is in straight-flanked ring
Shape.Shell 25 is fixed on the permanent magnet 26 of magnetic circuit system.The pad 28 of sounding device is moulded in the corner of shell 25.For example,
Two pads 28 are moulded in opposite two corner of shell 25 respectively by way of insert injection moulding.
As shown in figure 5, the latter end of lead 17 is welded on pad 28 after being detached from the first cantilever 11.Lead 17 passes through pad
28 are connected with external equipment.Pad 28 includes interior interconnecting piece and outer interconnecting piece.Lead 17 is welded on interior interconnecting piece.Outer interconnecting piece
It is connect with external equipment contact.Compared to directly lead 17 is welded on external equipment, this mode makes loudspeaker list
The conducting of body and external equipment is easier.
In addition, the setting of pad 28 is in corner, convenient for operation, this becomes easy the connection with external equipment.
According to another embodiment of the present disclosure, a kind of electronic equipment is provided.The electronic equipment can be but not limit to
In sounding module, mobile phone, tablet computer, wearable device, intercom, game machine, radio, television set, intelligent sound box etc..It should
Electronic equipment includes the sounding device of shell and the embodiment of the present disclosure.Sounding device is set in the housing.
The electronic equipment has sounding effect good, the good feature of reliability.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of sounding device, including vibrational system and the magnetic circuit system matched with the vibrational system, wherein the vibration
System includes centring disk and voice coil, and the centring disk includes centrally located central part and the edge part positioned at periphery, institute
It states and is equipped with support portion between central part and the edge part, the voice coil is fixed on the central part along axial one end,
The voice coil includes body part and the lead drawn by the body part, and the body part includes two opposite extraction sides
With two opposite free margins, for the lead respectively by drawing on two extraction sides, the centring disk includes drawing with two
At corresponding two first, two the second sides corresponding with two free margins,
It is characterized in that, the support portion includes the first cantilever being located on two the first sides and is located at two
The second cantilever on two sides, the lead are drawn outward along the extending direction of first cantilever and are fixed with first cantilever
Connection, first cantilever have additional buffer layer compared to the second cantilever.
2. sounding device according to claim 1, wherein the buffer layer is damping glue-line；
Alternatively, the buffer layer is thermoplastic elastomer；
Alternatively, the buffer layer is the composite construction for damping glue-line and thermoplastic elastomer.
3. sounding device according to claim 2, wherein the buffer layer is damping glue-line；
Alternatively, the buffer layer is the composite construction for damping glue-line and thermoplastic elastomer；
The damping glue-line is at least one of acrylate glue and silica gel.
4. sounding device according to claim 1, wherein the buffer layer is thermoplastic elastomer；
Alternatively, the buffer layer is the composite construction for damping glue-line and thermoplastic elastomer；
The material of the thermoplastic elastic layer includes polyester-type thermoplastic elastomer, polyurethane-type thermoplastic elastomer, polyamide
Analog thermoplastic elastomer, polystyrene-type thermoplastic elastomers, polyolefins thermoplastic elastomer, dynamic perduren and thermoplastic
At least one of property inorganic filler plastic blending material type thermoplastic elastomer (TPE).
5. sounding device according to claim 1, wherein the buffer layer is to tie positioned at the surface layer of first cantilever
Structure.
6. sounding device according to claim 1, wherein first cantilever and the second cantilever include the first plastic basis material
Layer, first cantilever further include the buffer layer being covered on the first plastic basis material layer and are covered on the buffer layer
The second plastic basis material layer.
7. sounding device according to claim 1, wherein each first side includes first cantilever, two institutes
The first cantilever is stated to be centrosymmetric setting relative to the geometric center of the centring disk.
8. sounding device according to claim 1, wherein each first side includes first cantilever, often
A second side includes two second cantilevers, two second cantilevers at least one described second side relative to
The perpendicular bisector on second side is symmetrical.
9. sounding device according to claim 6, wherein the first plastic basis material layer and the second plastic basis material layer
At least one of material be at least one of PI, PU, PEI, PEEK, PPS and PEN.
10. a kind of electronic equipment, the sounding device including apparatus casing and as described in any one in claim 1-9, institute
Sounding device is stated to be arranged in the apparatus casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/125702 WO2020057010A1 (en) | 2018-09-21 | 2018-12-29 | Speaker apparatus and electronic device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018111100139 | 2018-09-21 | ||
| CN201811110013 | 2018-09-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109246561A true CN109246561A (en) | 2019-01-18 |
| CN109246561B CN109246561B (en) | 2020-01-14 |
Family
ID=65052976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811204970.8A Active CN109246561B (en) | 2018-09-21 | 2018-10-16 | Sound generating device and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109246561B (en) |
| WO (1) | WO2020057010A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111147999A (en) * | 2020-04-08 | 2020-05-12 | 共达电声股份有限公司 | Flexible circuit board and loudspeaker |
| CN111698615A (en) * | 2019-03-14 | 2020-09-22 | 歌尔股份有限公司 | Double-sided miniature sound production device and electronic product |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020057010A1 (en) | 2020-03-26 |
| CN109246561B (en) | 2020-01-14 |
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