CN207010970U - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
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- CN207010970U CN207010970U CN201720935507.5U CN201720935507U CN207010970U CN 207010970 U CN207010970 U CN 207010970U CN 201720935507 U CN201720935507 U CN 201720935507U CN 207010970 U CN207010970 U CN 207010970U
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- loudspeaker
- voice coil
- vibrating diaphragm
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Abstract
A kind of loudspeaker, the FPC being connected including loudspeaker monomer and with loudspeaker monomer, the loudspeaker monomer has vibrational system and magnetic circuit system, the vibrational system includes vibrating diaphragm component and drives the voice coil loudspeaker voice coil of the vibrating diaphragm component vibration, the magnetic circuit system includes magnet steel and outer steel, magnet steel upper surface is provided with magnetic conductive board, and outer steel upper surface is provided with upper conduction magnetic board, and the lower surface of magnet steel and outer steel is provided with lower magnetic conductive board；The FPC is provided with loudspeaker connecting portion, and loudspeaker connecting portion is fixed on upper conduction magnetic board by laser welding, and the coil lead of voice coil loudspeaker voice coil is welded to connect with the loudspeaker connecting portion.Stainless steel pad can be omitted, reduces welding process process, saves welding material and welding and installation time, reduces the bad hidden dangers such as open circuit, reliability is high.
Description
Technical field
A kind of loudspeaker is the utility model is related to, more particularly to one kind is in the intelligent movable equipment such as mobile phone, tablet personal computer
The Microspeaker used.
Background technology
In the intelligent movable equipment such as mobile phone, flat board, loudspeaker is widely used, with intelligent movable equipment
Development, it has to loudspeaker in voice and musical qualities, reliability, weight, size etc. more carrys out higher requirement.
The existing Microspeaker used in the intelligent movable equipment such as mobile phone, mainly including vibrational system, magnetic circuit system
System and house and support vibrational system and the frame and protecgulum of magnetic circuit system.Vibrational system includes vibrating diaphragm and drives the vibrating diaphragm
The voice coil loudspeaker voice coil of vibration, voice coil loudspeaker voice coil are attached thereto in the side of vibrating diaphragm, and top dome is provided with above vibrating diaphragm.Magnetic circuit system mainly includes magnet steel and patch
Invest the magnetic conductive board on magnet steel surface etc..Class is disclosed in patent CN201520257565.8 and patent CN201310659401.3
As loudspeaker, its Patent CN201520257565.8 more clearly discloses existing single body construction for loudspeaker, patent
CN201310659401.3 then discloses loudspeaker monomer and is installed to formation loudspeaker module in housing and raises in more detail
The technical scheme that sound device module is used cooperatively with terminal electronic product.
Top dome is bonded on vibrating diaphragm by above-mentioned loudspeaker during fabrication, using glue, and is bonded in voice coil loudspeaker voice coil using glue
Vibrating diaphragm lower section that is, inside loudspeakers, then vibrating diaphragm and rigid protecgulum are bonded together by glue, then protecgulum is passed through
Glue is fixed in frame.Clamped on the outside of the ring of vibrating diaphragm by protecgulum and frame, thus vibrating diaphragm and the ball being bonded on vibrating diaphragm
Top and voice coil loudspeaker voice coil are able to fix support by protecgulum and frame.The part of magnetic circuit system then by bonding or the mode such as clamping directly or
Connect and accommodated and supported by frame.
On the control unit of loudspeaker, existing loudspeaker has pad extraction, when subsequently loading housing, also needs to pass through
FPC (FPC) plus tin welding connect out.Stainless steel pad is is molded in plastics frame by its detailed process, by voice coil loudspeaker voice coil
Multiturn coil lead be welded on stainless steel pad, then be assembled into loudspeaker monomer finished product with miscellaneous part, subsequently load shell
During body, FPC trumpet end solderings are connected on stainless steel pad.Whole process process is various, and during often have rosin joint leakage
Weldering, scruff foreign matter fall into the exception that loudspeaker air-vent etc. produces breaking or other defective products.
Utility model content
In view of situation above, the utility model proposes one kind can omit stainless steel pad, reduce welding process process, section
Welding material and welding and installation time are saved, reduces the bad hidden dangers such as open circuit, the high loudspeaker of reliability.
According to loudspeaker of the present utility model, including loudspeaker monomer and the FPC that is connected with loudspeaker monomer,
The loudspeaker monomer has vibrational system and magnetic circuit system, and the vibrational system includes vibrating diaphragm component and drives the vibrating diaphragm group
The voice coil loudspeaker voice coil of part vibration, the magnetic circuit system include magnet steel and outer steel, and magnet steel upper surface is provided with magnetic conductive board, and outer steel upper surface is set
There is a upper conduction magnetic board, the lower surface of magnet steel and outer steel is provided with lower magnetic conductive board；The FPC is provided with loudspeaker connecting portion, raises
Sound device connecting portion is fixed on upper conduction magnetic board by laser welding, and the coil lead of voice coil loudspeaker voice coil connects with loudspeaker connecting portion welding
Connect.
Preferably, the coil of the voice coil loudspeaker voice coil is multiturn copper cash, and two leads of the multiturn copper cash respectively be fixed on by spot welding
On the loudspeaker connecting portion.
Further, the loudspeaker connecting portion includes copper foil layer, PI film layers and strengthens steel plate layer, the copper foil layer, PI
It is gluing successively between film layer and reinforcement steel plate layer to be fixedly connected.The reinforcement steel plate layer of the loudspeaker connecting portion is weldingly fixed on
On magnetic conductive board.The coil lead of the voice coil loudspeaker voice coil is weldingly fixed on the copper foil layer of loudspeaker connecting portion.
Preferably, the coil lead of the voice coil loudspeaker voice coil is welded on upper conduction magnetic board, and is connected by upper conduction magnetic board with loudspeaker
The copper foil layer set in portion is welded to connect.
Further, the upper conduction magnetic board is Split type structure, two lead ends of coil lead of voice coil loudspeaker voice coil respectively with mutually every
From the connection of upper conduction magnetic board split Member Welding, and pass through the copper foil of corresponding upper conduction magnetic board split component and loudspeaker connecting portion
Contact is corresponded on layer to be welded to connect.
Preferably, the vibrating diaphragm component includes vibrating diaphragm, and the ring outer ledge of vibrating diaphragm is provided with vibrating diaphragm side wall；Also include metal
Ring, the top of becket are fixed on the outside of ring and in the receiving space that vibrating diaphragm side wall collectively forms by insert injection moulding, metal
Adjacent side between ring and the part of magnetic circuit system is connected with each other by laser welding.
The utility model also proposes a kind of mobile phone, and it includes loudspeaker described above.
Further, relative to the other end for setting loudspeaker connecting portion on the FPC of loudspeaker described above
Provided with pad or terminal mouth, it is connected with the speaker interface on cell phone mainboard.
Take the utility model proposes technology after, according to the technical solution of the utility model, have following beneficial
Effect：
1) the stainless steel pad as middle transition is eliminated, reduces transitional link and welding sequence, saves material
And welding process, manufacturing cost is saved, material and man-hour are advantageous.
2) because the reduction of process, and eliminate the complicated pad solder technique of opposed configuration, reduce rosin joint solder skip,
Scruff foreign matter falls into the problems such as loudspeaker air-vent odds, and reliability is improved, and reduces the bad hidden dangers such as open circuit.
3) coil lead of voice coil loudspeaker voice coil is welded on upper conduction magnetic board, and passes through upper conduction magnetic board and the copper foil layer of loudspeaker connecting portion
It is welded to connect, is easy to the coil lead of voice coil loudspeaker voice coil to weld nearby on nigh upper conduction magnetic board, avoids guiding sound in inside loudspeakers
The coil lead of circle sets other guide structures or conduction/fixed structure.
4) frame of traditional Microspeaker is instead of using becket, is welded in the lead of the multiturn coil of voice coil loudspeaker voice coil
When on the loudspeaker connecting portion of FPC (FPC), no frame frame disturbs, and does not interfere with the stroke of welding equipment spot welding head
Space, i.e., without particularly customized special small spot welding head, technique is simplified, also saves manufacturing cost.
Brief description of the drawings
Fig. 1 shows loudspeaker perspective exploded view of the present utility model；
Fig. 2 shows loudspeaker solid half-section diagram of the present utility model；
Fig. 3 shows the combination knot of diaphragm of loudspeaker component of the present utility model and voice coil loudspeaker voice coil, becket and upper conduction magnetic board
Structure diagrammatic cross-section；
Fig. 4 shows loudspeaker FPC scheme of installation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the embodiment that accompanying drawing provides.Described implementation
Example includes helping the various details that understand, but they can only be counted as exemplary, be a part of the present utility model
Embodiment, rather than whole embodiments.Meanwhile in order that specification is more clear succinct, it will omit pair it is well known that work(
The detailed description that can and construct.
Unless otherwise defined, technical term or scientific terminology used herein are should be in the utility model art
The ordinary meaning that personage with general technical ability is understood." on ", " under " described herein or " top ", " lower section " be with
Relative upper and lower relation for laying state when the vibrating diaphragm component 10 of loudspeaker is above, that is, illustrations institute is substantially
The upper and lower relation of displaying.When the laying state of loudspeaker changes, such as during upset loudspeaker, corresponding position relationship
It should change therewith to understand or implement the technical scheme of the application.
As depicted in figs. 1 and 2, a kind of loudspeaker, including loudspeaker monomer and the flexible circuitry that is connected with loudspeaker monomer
Plate 50 (FPC), the loudspeaker monomer have vibrational system and magnetic circuit system.
The voice coil loudspeaker voice coil 20 that vibrational system includes vibrating diaphragm component 10 and drives the vibrating diaphragm component 10 to vibrate, voice coil loudspeaker voice coil 20 is in vibrating diaphragm group
The side of part 10 is connected.Vibrating diaphragm component 10 includes vibrating diaphragm 11 and top dome 12, and vibrating diaphragm 11 is pellosil, and top dome 12 is by embedding
The vibrating diaphragm component 10 of integral structure is formed in part injection molding manner insertion vibrating diaphragm 11, voice coil loudspeaker voice coil 20 is fixed on the surface of top dome 12.
Vibrating diaphragm 11 has 112 on the outside of ring portion 110 and the ring being attached thereto inner side 111 and ring, and 112 edges are downward on the outside of ring
Stretching, extension forms vibrating diaphragm side wall 114, and vibrating diaphragm side wall 114 is located at the side that vibrating diaphragm 11 is connected with voice coil loudspeaker voice coil 20.
Magnetic circuit system includes magnet steel 30 and is attached at the magnetic conductive board 40 of the upper surface of magnet steel 30, and the outside of magnet steel 30 is provided with outer steel
31, magnet steel 30 is located at the middle part of outer steel 31, and outer steel 31 includes the outer steel of some splits be easy to manufacture and assembled
Monomer.The top of outer steel 31 is provided with upper conduction magnetic board 42, and the lower section of magnet steel 30 and outer steel 31 is provided with lower magnetic conductive board 41.
As shown in Figure 1, Figure 2 and Figure 3, becket 60, the top of becket 60 are provided between vibrational system and magnetic circuit system
Portion is fixed on the outside of ring in 112 and the receiving space that collectively forms of vibrating diaphragm side wall 114 by insert injection moulding, the top of becket 60
Portion surface is wrapped in ring outside 112 and vibrating diaphragm side wall 114, and upper conduction magnetic board 42 is arranged on the inner side of becket 60, upper magnetic conduction
It is connected with each other between the lateral surface of plate 42 and the medial surface of the bottom of becket 60 by laser welding.
As shown in Figure 1 and Figure 4, FPC 50 is provided with loudspeaker connecting portion 51, and loudspeaker connecting portion 51 passes through laser
It is fixedly welded on upper conduction magnetic board 42, the coil lead of voice coil loudspeaker voice coil 20 is welded to connect with the loudspeaker connecting portion 51.Flexible circuitry
Plate 50 by loudspeaker connecting portion 51 to the feed-in electric signal of voice coil loudspeaker voice coil 20, to make current flow through voice coil loudspeaker voice coil 20.Phase on FPC 50
For setting the other end of loudspeaker connecting portion 51 to be provided with pad or terminal mouth, the mobile phone applied with loudspeaker, flat board etc.
Speaker interface connection on Intelligent mobile equipment mainboard.
Magnet steel 30 and the surrounding of outer steel 31 form magnetic field, and right by magnetic conductive board 40, upper conduction magnetic board 42 and lower magnetic conductive board 41
Magnetic field is optimized, and described at least part of voice coil loudspeaker voice coil 20 is suspended between magnet steel 30 and outer steel 31, and voice coil loudspeaker voice coil 20 is led to when in use
Enter electric current so as to the forced vibration in magnetic field, and drive the vibration sounding of vibrating diaphragm component 10.
In the present embodiment, top dome 12 is used as inserts, and be placed in silica gel mould turns into silica film all-in-one injection
The vibrating diaphragm component 10 of one globality, make have stronger bonding fastness between vibrating diaphragm 11 and top dome 12, solve in the prior art
The viscosity being bonded using glue caused by vibrating diaphragm 11 and top dome 12 is weaker, it is difficult to meets the requirement of mobile phone speaker higher reliability
Problem.
It is appreciated that top dome 12, which is embedded in vibrating diaphragm 11, forms integral structure, can also take in some cases other
Mode, for example with mechanical trip mosaic texture, can also solve directly to adopt shaking for the Silicon moulds material that fastens with glue
The bad problem of reliability caused by the top dome 12 of film 11 and metal material, but this mode may be brought in physical dimension
Increase and to manufacture assembling propose higher requirement.Comparatively, top dome 12 is embedded in a manner of insert injection moulding in vibrating diaphragm 11,
For preferably scheme.
The loudspeaker detail and technique effect of present embodiment is detailed further below.
As shown in Figures 2 and 3,111 middle parts are provided with vibrating diaphragm perforate 113 on the inside of the ring of vibrating diaphragm 11, and the top dome 12 includes
Top dome body 120 and the top dome fixed part 121 for being arranged on the periphery of top dome body 120, the top dome body 120 are embedded in vibrating diaphragm perforate
In 113, top dome fixed part 121 is fixed on the inside of ring 111 lower section.
111 middle parts set vibrating diaphragm perforate 113 on the inside of the ring of vibrating diaphragm 11, form pellosil hollow structure, are easy to top dome
12 insertion vibrating diaphragms 11 in, and the injection moulding and attaching of top dome fixed part 121 on the inside of ring 111 lower surface, further enhance embedding
The intensity and firmness of conjunction.On the other hand, vibrating diaphragm 11 is hollow, mould filling top dome 12, and the pellosil weight that can mitigate is about
30%, under the conditions of equal driving force, loudspeaker can obtain higher sensitivity；For from flow chart, mould filling
Top dome 12 can reduce one of top dome 12 and the bonding process of vibrating diaphragm 11, saved on man-hour, cost of labor can decrease.
The thickness of the top dome fixed part 121 is less than the thickness of the top dome body 120.
The thickness of top dome body 120 can determine according to the thickness of speaker performance design, top dome fixed part 121
Thickness is set smaller than the thickness of top dome body 120, is easy to form gradient-structure, makes the relative protrusion of top dome body 120 with firm
In ground insertion vibrating diaphragm 11.In some cases, as a kind of possibility, both same thickness can also be set, it is directly fixed
In the inside of vibrating diaphragm 11, but certain encapsulated height is may require that to ensure that top dome 12 is firmly embedded into vibrating diaphragm 11, eventually shadow
General thickness is rung, causes loudspeaker whole height slightly higher.
Voice coil loudspeaker voice coil 20 is fixed on the surface of top dome 12, and specific method is that the upper end face of voice coil loudspeaker voice coil 20 is passed through into gluing fixation
In the downside surface of top dome fixed part 121.
It is combined into it is appreciated that can also be embedded in voice coil loudspeaker voice coil 20 in vibrating diaphragm 11 by insert injection moulding mode with vibrating diaphragm component 10
One, excellent effect consistent in vibrating diaphragm 11 is embedded in by insert injection moulding mode with foregoing top dome 12 by obtaining.But from most
Good implementation result considers that voice coil loudspeaker voice coil 20 can be adhered to by glue to be easier on the surface of top dome 12 of attachment bonding, because top dome 12
For metal material, it is more, in contrast stickup easier than silica gel material typically to use aluminum, and adhesive strength is high, adhesive effect
It can be maintained.And voice coil loudspeaker voice coil 20 is arranged on inside loudspeakers, without the influence of extraneous steam, therefore glue bonding side can be passed through
Formula is fixed on vibrating diaphragm component 10.Relative be embedded in voice coil loudspeaker voice coil 20 in vibrating diaphragm 11 by insert injection moulding mode is combined with vibrating diaphragm component 10
It is integrated, the complexity of insert injection moulding will be reduced, reduce cost, and it is reliable also to can guarantee that voice coil loudspeaker voice coil 20 is connected with top dome 12
Property.
Top dome fixed part 121 is fixed on the inside of ring 111 lower section, is easy to voice coil loudspeaker voice coil 20 to be fixed by the gluing top dome that is fixed on
The downside surface in portion 121.It is Nian Jie by applying glue with voice coil loudspeaker voice coil 20 using the underlying surfaces of top dome 12, avoid vibrating diaphragm 11 and voice coil loudspeaker voice coil 20
Viscosity weak hidden danger when being directly bonded.
For being fixedly connected of top dome 12 and vibrating diaphragm 11, top dome fixed part 121 can also be fixed on the top of vibrating diaphragm 11,
That is the outside of loudspeaker, being fixedly connected for top dome 12 and vibrating diaphragm 11 can equally be realized.But this situation can cause voice coil loudspeaker voice coil 20
Can not be directly be bonded with the top dome 20 of metal material, if can have sticky weak hidden danger again if directly Nian Jie with vibrating diaphragm 11.
Under this situation, then need to consider voice coil loudspeaker voice coil 20 being embedded in vibrating diaphragm 11 by insert injection moulding mode to be combined as a whole with vibrating diaphragm component,
Or take other combinations.It is appreciated that being embedded in relative to top dome 12 in vibrating diaphragm 11, voice coil loudspeaker voice coil 20 is bonded in top dome 12
For the lower surface of top dome fixed part 121, other combinations may bring structure or technologic complexity, and cause
The increase of loadspeaker structure size and cost.
The bonding site of voice coil loudspeaker voice coil 20 and top dome fixed part 121 is located at 111 lower section, vibrating diaphragm 11, ball on the inside of the ring of vibrating diaphragm 11
Top fixed part 121 and voice coil loudspeaker voice coil 20 are sequentially connected from the top down.Vibrating diaphragm 11 and top dome 12 form integral knot by embedded injection molding manner
Structure, voice coil loudspeaker voice coil 20 are directly fixedly connected with top dome 12, compared with the prior art for, lacked pellosil between top dome 12 and voice coil loudspeaker voice coil 20,
It can reduce by a silica gel film thickness so in height, can be by this space to be preserved to oscillation space, after loudspeaker monomer
It is continuous be assembled into housing or the electronic product such as mobile phone in when there is space advantage.
The top of becket 60 is wrapped in ring outside 112 and vibrating diaphragm side wall 114 by insert injection moulding, specifically,
112 are covered on the upper surface at the top of becket 60 on the outside of ring, and the vibrating diaphragm side wall 114 is covered in the outer of the top of becket 60
On side.On the outside of the becket 60 and ring formed by insert injection moulding journey is firmly combined between 112 and vibrating diaphragm side wall 114
Degree, it is ensured that on the outside of ring 112 and vibrating diaphragm side wall 114 be wrapped in the top of becket 60, form closed waterproof layer.Can be with
Understand, degree is firmly combined between 112 and vibrating diaphragm side wall 114 on the outside of becket 60 and ring to further enhance, can be with
By setting the modes such as downwardly convex or downward annular wall at 112 on the outside of the ring close to the medial surface of becket 60, make folding
112 are covered on the upper surface and medial surface at the top of becket 60 simultaneously on the outside of ring, further ensure that ring outside 112 and vibrating diaphragm
Side wall 114 is firmly wrapped in the top of becket 60, forms closed waterproof layer.
When the downward stretching, extension in 112 edges forms vibrating diaphragm side wall 114 on the outside of ring, vibrating diaphragm side wall 114 is on the outside of ring
112, becket 60 can be made to keep relatively more succinct and be easy to the structure installed.It is appreciated that other angles can also be taken
Or the situation that surface texture is specifically faced with tackling, such as form acute angle between taking 112 on the outside of vibrating diaphragm side wall 114 and ring
Angle, and make the surface of becket 60 be corrugated, when being correspondingly molded 112 or vibrating diaphragm side wall 114 and becket on the outside of ring
The surface texture of 60 contacts can also be changed into the ripple struction on corrugated and the embedded surface of becket 60, although inserts can be added
The complexity of injection mold and technique, but when the larger becket that causes to take of loadspeaker structure is heavier, it is ensured that two
The bonding strength and firmness of person.
For in terms of the water resistance, because the material of vibrating diaphragm 11 is pellosil, silica gel is than conventional composite membrane or mylar
Film have preferably it is restorative, by water, air pressure deformation after, when conventional environment is replied, can preferably recover original structure
Shape, it is more beneficial for waterproof demand.Top dome 12 is embedded to be molded in vibrating diaphragm 11, make composition vibrating diaphragm 11 pellosil and top dome 12 it
Between have stronger bonding fastness and air-tightness, ensure the water resistance between vibrating diaphragm 11 and top dome 12.It is embedded using becket 60,
The ring outside 112 of vibrating diaphragm 11 and the injection molding manner of the position silica gel outsourcing of vibrating diaphragm side wall 114 so that the border at the top of becket 60
Have a pellosil parcel, strengthen loudspeaker monomer and its air-tightness between bracket shell to be mounted.
Connection between becket 60 and vibrating diaphragm 11 and upper conduction magnetic board 42, is connected to vibrational system and magnetic circuit system, and by
Becket 60 assume responsibility for the support to vibrational system and magnetic circuit system.
Other parts of magnetic circuit system, the lower surface of upper conduction magnetic board 42 and the upper surface of outer steel 31, and outer steel 31
Pass through with lower magnetic conductive board 41, lower magnetic conductive board 41 with the corresponding surface contacted between magnet steel 30 and magnet steel 30 and magnetic conductive board 40 gluing
It is connected with each other.
It is embedded using becket 60, the ring outside 112 of vibrating diaphragm 11 and the injection molding manner of the silica gel outsourcing of vibrating diaphragm side wall 114,
Make becket 60 is embedded to be molded in the silica gel of vibrating diaphragm 11, realize that becket 60 is integrated with the diaphragm of vibrating diaphragm 11.It can omit
Frame and protecgulum, the support function to vibrational system and magnetic circuit system is undertaken by succinct becket 60, not by plastics frame
Deformation or burr influence.And without, using the diaphragm and frame of glue bonding vibrating diaphragm 11, reducing group as prior art
Process is filled, shortens man-hour, and avoids glue from pasting corresponding assembly failure and produces, improves packaging efficiency and yields.
Being connected between becket 60 and upper conduction magnetic board 42 using Laser Welding, the glue compared to routine bonds, and firm welding is big,
Reliability strengthens, and without the hardening time of glue, evades the product accumulation problem in assembling process, reduces assembly tool fixture number
Amount, improves packaging efficiency.
Adjacent side between becket 60 and upper conduction magnetic board 42 is connected with each other by laser welding, upper conduction magnetic board 42 with it is outer
Pass through glue between magnet steel 31, outer steel 31 and lower magnetic conductive board 41, lower magnetic conductive board 41 and magnet steel 30 and magnet steel 30 and magnetic conductive board 40
It is viscous to be connected with each other, construct the loudspeaker monomer a being fully sealed inner space.For loudspeaker monomer, vibrational system is led to
Becket 60 is crossed to be able to be supported on the lower magnetic conductive board 41 of magnetic circuit system, other parts of magnetic circuit system be also fixed connection and
Support.Main moving component is vibrating diaphragm component 10, due to passing through insert injection moulding phase between vibrating diaphragm component 10 and becket 60
It is mutually fixed, and becket 60 is interfixed with upper conduction magnetic board 42 by laser welding, and vibrating diaphragm component 10 obtains firm support,
Its vibrations will not also cause the deformation of support member or the separation of connecting portion.
As for gluing connection is used between other parts of magnetic circuit system, because several portions are passed through in the vibrations of vibrating diaphragm component 10
The transmission of part has been disperseed and weakened, and will not separate hidden danger to the connect band between associated components.Meanwhile these parts
Inside loudspeakers are arranged on, without the influence of extraneous steam, also without higher waterproof requirement, therefore can be bonded by glue
Mode interfixes.
Only with regard to becket 60 and vibrating diaphragm 11 be connected or relative positioning for, the adhesives such as glue can also be used to connect
Connect fixation.But in vibrating diaphragm 11 using in the case of pellosil, if Silicon moulds are be bonded using glue with becket 60, it is sticky compared with
Weak, although relative positioning can be realized, reliability is not high, has separation hidden danger during the vibrations of loudspeaker sounding, difficult
To meet the requirement of mobile phone speaker higher reliability.And in sealing and structural strength for, glue bonding can not meet
Demand can not omit traditional frame or protecgulum, it is necessary to other supplementary structures just can guarantee that sealing and structural strength.
Loudspeaker connecting portion 51 includes copper foil layer, PI film layers and strengthens steel plate layer, copper foil layer, PI film layers and reinforcement steel plate layer
Between it is gluing successively be fixedly connected, strengthen steel plate layer be weldingly fixed on upper conduction magnetic board 42, as shown in Figure 4.The coil of voice coil loudspeaker voice coil 20
For multiturn copper cash, the coil lead of voice coil loudspeaker voice coil 20 is welded to connect with the loudspeaker connecting portion 51, can use direct or indirect two
Kind mode.
The coil lead of voice coil loudspeaker voice coil 20 is directly welded to connect with the loudspeaker connecting portion 51, and method is by the two of multiturn copper cash
Root lead respectively be fixed on the copper foil layer of loudspeaker connecting portion 51 by spot welding.
Copper foil layer on the loudspeaker connecting portion 51 of FPC 50 is fixed in spot welding to two leads of voice coil loudspeaker voice coil 20 respectively
Corresponding contact, for Microspeaker compared with prior art, the stainless steel pad as middle transition is eliminated, was reduced
Link and welding sequence are crossed, saves material and welding process, has saved manufacturing cost, material and man-hour are advantageous.Simultaneously
Because the reduction of process, and the complicated pad solder technique of opposed configuration is eliminated, reduce rosin joint solder skip, scruff foreign matter falls
The problems such as enter'sing loudspeaker air-vent odds, reliability are improved, and reduce the bad hidden dangers such as open circuit.Loudspeaker connects
Copper foil layer, PI film layers and the reinforcement mutually gluing insulation of steel plate layer in portion 51, are avoided and upper conduction magnetic board 42 turns on and forms short circuit.
The coil lead of voice coil loudspeaker voice coil 20 is welded to connect with the loudspeaker connecting portion 51 indirectly, and method is by the coil of voice coil loudspeaker voice coil 20
Two lead ends of lead are connected with the mutually isolated split Member Welding of upper conduction magnetic board 42 respectively, and pass through corresponding upper conduction magnetic board
42 split components are welded to connect with corresponding to contact on the copper foil layer of loudspeaker connecting portion 51.In this case, in order to avoid entirety
Property upper conduction magnetic board plate 42 cause coil lead short-circuit, upper conduction magnetic board 42 is arranged to mutually isolated Split type structure.
It is described to correspond to contact weldering with the copper foil layer of loudspeaker connecting portion 51 by the corresponding split component of upper conduction magnetic board 42
Connect, two lead ends of coil lead of voice coil loudspeaker voice coil 20 can be first weldingly fixed on upper conduction magnetic board 42 in succession, then along upper conduction magnetic board
42 arrangements are welded to connect to loudspeaker connecting portion 51 is rear nearby with corresponding to contact on the copper foil layer of loudspeaker connecting portion 51；Or sound
Two lead ends of coil lead of circle 20 are first weldingly fixed on upper conduction magnetic board 42, pass through connection near loudspeaker connecting portion 51
Upper conduction magnetic board 42 is welded to connect by lead with corresponding to contact on the copper foil layer of loudspeaker connecting portion 51, is consequently formed the line of voice coil loudspeaker voice coil 20
Circle two lead ends of lead correspond to contact connection with the copper foil layer of loudspeaker connecting portion 51 indirectly.
The coil lead of voice coil loudspeaker voice coil 20 is welded on upper conduction magnetic board 42, and passes through upper conduction magnetic board 42 and loudspeaker connecting portion 51
Copper foil layer is welded to connect, and is easy to the coil lead of voice coil loudspeaker voice coil 20 to weld nearby on nigh upper conduction magnetic board 42, it is not necessary to raising one's voice
Guided inside device.But relative to by two leads of voice coil loudspeaker voice coil 20, pair of copper foil layer on loudspeaker connecting portion 51 is fixed in spot welding respectively
Contact is answered, technique is slightly cumbersome, but in the design of some voice coil structures, can effectively avoid the line in inside loudspeakers guiding voice coil loudspeaker voice coil 20
Enclose lead or other guide structures or conduction/fixed structure are set.Although this welding manner also needs to a few step welding sequences,
But pad is also omit, the manufacture assembling link of pad is eliminated, saves process time and cost.
For further optimization structure and the purpose of packaging technology, the upper surface of upper conduction magnetic board 42 is provided with some inner fovea parts,
Loudspeaker connecting portion 51 is welded to connect in the inner fovea part with upper conduction magnetic board 42, on the one hand contributes to form adaptation outer steel 31
The magnetic conductive board of layout, while also avoid loudspeaker connecting portion 51 from being superimposed upon on upper conduction magnetic board 42 and add the overall thickness of loudspeaker
Spend (height).The lower section of becket 60 is provided with some indent bit-avoiding slots, and the indent bit-avoiding slot is mainly used in technique and keeps away position, such as
When FPC 50 (FPC) is drawn outside loudspeaker monomer at upper conduction magnetic board 42, position is drawn to FPC and carries out keeping away position；Or
Positioning to the upper conduction magnetic board 42 in production technology connects material strip progress technique and keeps away position etc..
The loudspeaker production method of present embodiment is described below.
Using top dome 12 and becket 60 as inserts, it is placed in silica gel mould；Silica gel is poured into a mould, shaping obtains vibrating diaphragm
11, while top dome 12 and becket 60 and silica film all-in-one injection molding, the integral structure for obtaining subsidiary becket 60 shakes
Membrane module 10.
The top dome 12 being fixed as one in the vibrating diaphragm component 10 of the integral structure of subsidiary becket 60 with vibrating diaphragm 11
Surface injection glue, it is be bonded with voice coil loudspeaker voice coil 20, form vibrational system.
Loudspeaker connecting portion 51 is fixed on upper conduction magnetic board 42 by laser welding, the coil lead of voice coil loudspeaker voice coil 20 is with raising one's voice
Device connecting portion 51 is welded to connect.
It will be connected with each other, shaken by laser welding between the lateral surface of upper conduction magnetic board 42 and the medial surface of the bottom of becket 60
Dynamic system is assembled into loudspeaker with magnetic circuit system.
Description uses the manufacture method of the Intelligent mobile equipments such as the mobile phone of above-mentioned loudspeaker, flat board below.
The loudspeaker is arranged in the loudspeaker support housing set by Intelligent mobile equipment, top dome 12 and vibrating diaphragm 11
Ring portion 110, on the inside of ring 111 and ring on the outside of 112 openings for being located at the bracket shell, vibrating diaphragm side wall 114
Between becket 60 and the assembling corresponding surface of the bracket shell.Relative to setting loudspeaker connecting portion on FPC 50
The pad or terminal mouth that 51 other end is set, are connected with the speaker interface on Intelligent mobile equipment mainboard.
The corresponding surface that loudspeaker can be installed in the bracket shell in advance is coated with a border marine glue, more by setting
Weight waterproof construction, further enhances water resistance.
It should be noted that according to the loudspeaker of the present embodiment, during insert injection molding, top dome 12 and becket
60, as inserts and the Silicon moulds integrated injection molding for forming vibrating diaphragm 11, obtain an integrated structure.In order to more clear
Relation between each funtion part of Chu and the herein described loudspeaker of figurative expression, in the accompanying drawing 1 of the application, by gold
The signal that category ring 60 makees decomposing state with vibrating diaphragm 11 and top dome 12 is expressed.
According to the loudspeaker of above-described embodiment, it is made up of the pellosil of vibrating diaphragm 11 and the integrated structure design of top dome 12
Vibrating diaphragm component 10, vibrating diaphragm component 10 are combined with the bonding of voice coil loudspeaker voice coil 20, applied to improve pellosil in Microspeaker with hardware
The problem of glue sticking viscosity is weak, avoid loudspeaker vibrating diaphragm 11 and top dome 12, vibrating diaphragm 11 and voice coil loudspeaker voice coil 20 during sounding vibrations
Separate hidden danger.The process for reducing vibrating diaphragm 11 and the skeleton of voice coil loudspeaker voice coil 20 gluing simultaneously, improve the stability of vibrational system.
According to the loudspeaker of above-described embodiment, compared with the prior art for, eliminate pad, pass through FPC 50
The laser welding of loudspeaker connecting portion 51 is fixed on upper conduction magnetic board 42, and coil lead and the loudspeaker connecting portion 51 of voice coil loudspeaker voice coil 20 weld
Connection, reduces transitional link and welding sequence, saves material and welding process, saved manufacturing cost.
According to the loudspeaker of above-described embodiment, compared with the prior art for, eliminate protecgulum and frame, replaced using becket
Frame function of the prior art is assume responsibility for for the frame of traditional Microspeaker, becket 60, its compression strength is much
More than the plastics frame of routine, product in actual use can be avoided to deform loudspeaker because of compression and then cause sounding abnormal sound
Hidden danger, improve the reliability of product.
Meanwhile the lead of the multiturn coil in voice coil loudspeaker voice coil 20 is welded in the loudspeaker connecting portion 51 of FPC 50 (FPC)
When upper, no frame frame interference, do not interfered with the stroke space of welding equipment spot welding head, i.e., need not particularly customized special small spot welding
Head, technique is simplified, also save manufacturing cost.
According to the loudspeaker of above-described embodiment, it is molded by the way that top dome 12 is embedded in vibrating diaphragm 11, makes vibrating diaphragm 11 and top dome 12
Between there is stronger bonding fastness and air-tightness and water resistance；And pass through the becket 60 that insert injection moulding is formed and folding
Combination on the outside of ring between 112 and vibrating diaphragm side wall 114, reach becket 60 and be embedded in vibrating diaphragm component 10 and by silica gel outsourcing
Purpose, loudspeaker monomer finished product have the vibrating diaphragm 11 of injection formed when being assemblied on bracket shell between becket 60 and bracket shell
Layer of silica gel buffering, strengthen the air-tightness and water resistance between the rigid surface of becket 60 and bracket shell fitting surface.With
Existing conventional water-proof loudspeaker is compared, and is significantly reduced gluing and assembly process in operation process, can at utmost be avoided
Occur disconnected glue during painting water-proof adhesive in operation, prevent water-proof function from lacking.This programme need not can be realized equipped with protecgulum and reliably held
Therefore long sealing reduces thickness to reach waterproof demand, when loudspeaker monomer is assemblied in housing, have height empty
Between advantage.On the other hand, without protecgulum, the acoustical behavior of cavity is advantageous to.
Claims (10)
1. a kind of loudspeaker, including loudspeaker monomer and the FPC (50) that is connected with loudspeaker monomer, the loudspeaker
Monomer has vibrational system and magnetic circuit system, and the vibrational system includes vibrating diaphragm component (10) and the driving vibrating diaphragm component (10)
The voice coil loudspeaker voice coil (20) of vibration, the magnetic circuit system include magnet steel (30) and outer steel (31), and magnet steel (30) upper surface is provided with magnetic conductive board
(40), outer steel (31) upper surface is provided with upper conduction magnetic board (42), and the lower surface of magnet steel (30) and outer steel (31) is provided with lower magnetic conduction
Plate (41)；Characterized in that, the FPC (50) is provided with loudspeaker connecting portion (51), loudspeaker connecting portion (51) passes through
Laser welding is fixed on upper conduction magnetic board (42), and the coil lead of voice coil loudspeaker voice coil (20) connects with the loudspeaker connecting portion (51) welding
Connect.
A kind of 2. loudspeaker according to claim 1, it is characterised in that the coil of the voice coil loudspeaker voice coil (20) is multiturn copper cash,
Two leads of the multiturn copper cash respectively be fixed on the loudspeaker connecting portion (51) by spot welding.
3. a kind of loudspeaker according to claim 1 or 2, it is characterised in that the loudspeaker connecting portion (51) includes copper
Layers of foil, PI film layers and reinforcement steel plate layer, it is gluing successively between the copper foil layer, PI film layers and reinforcement steel plate layer to be fixedly connected.
A kind of 4. loudspeaker according to claim 3, it is characterised in that the reinforcement steel plate of the loudspeaker connecting portion (51)
Layer is weldingly fixed on upper conduction magnetic board (42).
5. a kind of loudspeaker according to claim 3, it is characterised in that the coil lead of the voice coil loudspeaker voice coil (20) is welded and fixed
On the copper foil layer of loudspeaker connecting portion (51).
6. a kind of loudspeaker according to claim 1, it is characterised in that the coil lead of the voice coil loudspeaker voice coil (20) is welded in
On magnetic conductive board (42), and it is welded to connect by upper conduction magnetic board (42) with the copper foil layer set on loudspeaker connecting portion (51).
7. a kind of loudspeaker according to claim 6, it is characterised in that the upper conduction magnetic board (42) is Split type structure, sound
Two lead ends of coil lead of circle (20) are connected with mutually isolated upper conduction magnetic board (42) split Member Welding respectively, and are passed through
Corresponding upper conduction magnetic board (42) split component is welded to connect with corresponding to contact on the copper foil layer of loudspeaker connecting portion (51).
A kind of 8. loudspeaker according to claim 1, it is characterised in that the vibrating diaphragm component (10) includes vibrating diaphragm (11),
(112) edge is provided with vibrating diaphragm side wall (114) on the outside of the ring of vibrating diaphragm (11)；Also include becket (60), the top of becket (60)
Portion is fixed on by insert injection moulding in the receiving space that (112) and vibrating diaphragm side wall (114) collectively form on the outside of ring, becket
(60) adjacent side between the part of magnetic circuit system is connected with each other by laser welding.
9. a kind of mobile phone, it is characterised in that including the loudspeaker any one of claim 1 to 8.
10. a kind of mobile phone according to claim 9, it is characterised in that FPC is raised one's voice on (50) relative to setting
The other end of device connecting portion (51) is provided with pad or terminal mouth, is connected with the speaker interface on cell phone mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720935507.5U CN207010970U (en) | 2017-07-28 | 2017-07-28 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720935507.5U CN207010970U (en) | 2017-07-28 | 2017-07-28 | Loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207010970U true CN207010970U (en) | 2018-02-13 |
Family
ID=61456616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720935507.5U Active CN207010970U (en) | 2017-07-28 | 2017-07-28 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207010970U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108600932A (en) * | 2018-03-29 | 2018-09-28 | 山东共达电声股份有限公司 | Moving-coil structure and preparation method thereof and loud speaker |
| WO2020258215A1 (en) * | 2019-06-28 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
| WO2021248511A1 (en) * | 2020-06-12 | 2021-12-16 | 瑞声声学科技(深圳)有限公司 | Injection mold for manufacturing sound-producing device basket structure |
-
2017
- 2017-07-28 CN CN201720935507.5U patent/CN207010970U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108600932A (en) * | 2018-03-29 | 2018-09-28 | 山东共达电声股份有限公司 | Moving-coil structure and preparation method thereof and loud speaker |
| CN108600932B (en) * | 2018-03-29 | 2023-12-08 | 山东共达电声股份有限公司 | Moving coil, manufacturing method thereof and loudspeaker |
| WO2020258215A1 (en) * | 2019-06-28 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
| WO2021248511A1 (en) * | 2020-06-12 | 2021-12-16 | 瑞声声学科技(深圳)有限公司 | Injection mold for manufacturing sound-producing device basket structure |
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