CN109495819A - Sounding device and earphone - Google Patents
Sounding device and earphone Download PDFInfo
- Publication number
- CN109495819A CN109495819A CN201811326476.9A CN201811326476A CN109495819A CN 109495819 A CN109495819 A CN 109495819A CN 201811326476 A CN201811326476 A CN 201811326476A CN 109495819 A CN109495819 A CN 109495819A
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- CN
- China
- Prior art keywords
- sounding device
- electrically connected
- diameter
- circuit system
- support column
- 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.)
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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
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
-
- 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
- H04R9/04—Construction, mounting, or centering of coil
Abstract
The invention discloses a kind of sounding device and earphones.The sounding device includes: magnetic circuit system, and the magnetic circuit system is centrally formed with through-hole；Vibration component, the vibration component includes vibrating diaphragm, voice coil and centring disk, the centring disk includes support portion, fixed part and linking arm, the support portion is looped around around the fixed part, the linking arm is connected between the fixed part and support portion, there is vibrating area in the vibrating diaphragm, form connection between the voice coil, vibrating area and support portion；Support column, the support column pass through the through-hole and expose from the upper end of the magnetic circuit system, and the support portion is fixedly connected on the support column.Of the invention one has the technical effect that, improves the acoustical behavior of sounding device.
Description
Technical field
The present invention relates to electroacoustic transduction technical fields, more particularly, to a kind of sounding device.
Background technique
In recent years, consumer electronics product is rapidly developed, and the electronic equipments such as smart phone, VR equipment are consumed
The approval of person, is widely used.Those skilled in the art are also corresponding to relevant auxiliary products such as earphone etc. to carry out
It improves, to meet the performance requirement of electronic product, meets consumer to the needs of properties of product.
Sounding device is electroacoustic transduction component important in consumer electronics product, as loudspeaker, earpiece, earphone etc.
It is widely used.With the performance improvement of electronic product, the improvement of the acoustical behavior in relation to sounding device is also inevitable
Trend.In order to meet better acoustical behavior, sounding device generally requires that configuration sized is bigger, the stronger magnetic circuit of magnetic field strength
System.In sounding device, the size of voice coil and the size of magnetic circuit system are mutually matched.But voice coil inner space is big,
Utilization rate is low；When voice coil amplitude is larger, it is also easy to produce the risks such as polarization, voice coil leads broken string.
Therefore, it is necessary to a kind of novel sounding device be proposed, to overcome drawbacks described above.
Summary of the invention
It is an object of the present invention to provide a kind of new solutions of sounding device.
According to the first aspect of the invention, a kind of sounding device is provided, which includes: magnetic circuit system, described
Magnetic circuit system is centrally formed with through-hole；
Vibration component, the vibration component include vibrating diaphragm, voice coil and centring disk, the centring disk include support portion,
Fixed part and linking arm, the support portion are looped around around the fixed part, the linking arm be connected to the fixed part with
Between support portion, there is vibrating area in the vibrating diaphragm, forms connection between the voice coil, vibrating area and support portion；
Support column, the support column pass through the through-hole and expose from the upper end of the magnetic circuit system, and the fixed part is solid
Surely it is connected on the support column.
Optionally, the top tool of the support column is electrically connected contact there are two first, and lead is led on the voice coil, described
Lead is electrically connected a little to be formed with described first and be electrically connected.
Optionally, it is formed with from the circuit that the support portion extends to fixed part through linking arm in the centring disk
Line, the lead are electrically connected by the support portion or linking arm with the circuit trace, and described first contact that is electrically connected passes through institute
Fixed part is stated to be electrically connected with the circuit trace.
Optionally, the bottom end tool of the support column is electrically connected contact there are two second, and described second contact that is electrically connected is configured as
For being electrically connected with external equipment formation, two described second contacts that are electrically connected inside the support column with described first through being electrically connected
Point forms electrical connection.
Optionally, the vibrating area of the voice coil and vibrating diaphragm is connected in the both side surface of the support portion.
Optionally, the centring disk include four linking arms, four linking arms in pairs, described in two pairs
Support arm is axisymmetricly distributed relative to the central axes of the centring disk.
Optionally, the fixed part is the first fixed part and the second fixed part, and a pair of linking arm is connected to described
On first fixed part, linking arm described in another pair is connected on second fixed part.
Optionally, the support column includes side in inverted T shaped plastic body portion, the plastic body portion include stem and
It is connected to the department of assembly of stem bottom, the stem passes through the through-hole of the magnetic circuit system, and the department of assembly is overlying on the magnetic circuit
On the bottom surface of system；
The support column further includes two metalworks being molded in the plastic body portion, and the metalwork includes parallel
First end and the second end, and the middle part of connection first end and the second end, described in the first end exposes
The top surface of stem forms first and is electrically connected contact, and the bottom surface that the second end exposes the support portion forms second and is electrically connected contact.
Optionally, the diameter of the periphery of the magnetic circuit system is first diameter D1, and the support column is located at the through-hole
In the diameter of part be second diameter D2, the second diameter D2 is less than or equal to 0.32 times of first diameter D1；
The diameter of the periphery of the magnetic circuit system is first diameter D1, and the diameter of the periphery of the sounding device is that third is straight
The ratio of diameter D3, the first diameter D1 and third diameter D3 are greater than or equal to 0.65.
Optionally, the magnetic circuit system includes magnetic yoke, forms oriented magnetic yoke periphery at the top edge of the magnetic yoke and extends
Several flanges；
The sounding device further includes bearing frame, and the bearing frame is centrally formed with hollow out, the bearing frame
Lower end surface on be formed with positioning region；
The magnetic yoke is set to the hollow part from one side positioning of the lower end surface of the bearing frame, and the flange is in level
The lower section that side extends upwardly to the bearing frame is fixedly connected with the positioning region.
Optionally, the positioning region includes the positioning groove being formed on the lower end surface of the bearing frame, the positioning
Groove extends to the hollow part, and the flange is in the positioning groove.
Optionally, the bearing frame is plastic material, and the positioning region includes the lower end for being formed in the bearing frame
Hot melt structure on face；
The hot melt structure is fixedly connected with flange hot melt.
Optionally, the positioning region further includes the positioning groove being formed on the lower end surface of the bearing frame, described fixed
Position groove extends to the hollow part, and the hot melt structure is located in the positioning groove, and the flange is recessed embedded in the positioning
In slot；
The shape of the hollow out and the shape of the magnetic yoke match, and the upper end of the magnetic yoke is in the hollow out, institute
It states magnetic yoke and is embedded in the depth of the hollow out and be equivalent to the depth of the positioning groove.
The present invention also provides a kind of earphone, above-mentioned sounding device is provided in the earphone.
Of the invention one has technical effect that, reduces a possibility that voice coil generates polarization in sounding device, is promoted
The acoustical behavior of sounding device.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention 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 partial structural diagram for the sounding device that the specific embodiment of the invention provides；
Fig. 2 is the structural schematic diagram for the centring disk that the specific embodiment of the invention provides；
Fig. 3 is the explosive view of the part for the sounding device that the specific embodiment of the invention provides；
Fig. 4 is the side sectional view for the sounding device that the specific embodiment of the invention provides.
Fig. 5 is the structural schematic diagram for the voice coil that the specific embodiment of the invention provides；
Fig. 6 is the explosive view of the part for the sounding device that the specific embodiment of the invention provides.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention 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
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
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.
Fig. 1 and Fig. 3 shows the structural schematic diagram and explosive view of the part of sounding device in the present invention, and Fig. 2 shows this
The structural schematic diagram of centring disk in invention, Fig. 4 show the side sectional view of sounding device in the present invention, and Fig. 5 shows this
The structural schematic diagram of voice coil in invention.It is detailed to carry out such as structure, the principles of sounding device of the invention now by taking Fig. 1 to Fig. 5 as an example
Most description.
The present invention provides a kind of sounding device, which includes: magnetic circuit system, vibration component and support column 30.
The magnetic circuit system is centrally formed with through-hole, and the through-hole is penetrated through from the bottom end of magnetic circuit system to the top of the magnetic circuit system
Portion.It is formed with magnetic gap in the magnetic circuit system, is formed with magnetic field in the magnetic gap, is used to that vibration component to be driven to vibrate.
The magnetic gap in a ring, is looped around the periphery of the through-hole.
The vibration component includes vibrating diaphragm 21, voice coil 22 and centring disk 23.As depicted in figs. 1 and 2, the centring disk
23 include support portion 231, fixed part 232 and linking arm 233, and the support portion 231 is looped around around the fixed part 232,
For the shape of support portion and fixed part, can be selected according to the shape of sounding device and voice coil, fixed part can be with
Support portion shape is similar, can also be transformed to other shapes.The linking arm 233 is connected to the fixed part 232 and support
Between portion 231, the present embodiment is not construed as limiting the shape and quantity of linking arm.
Wherein, there is vibrating area, vibrating area is the region connecting on vibrating diaphragm 21 with voice coil 22 in the vibrating diaphragm 21.The sound
Electrical connection is formed between circle 22, vibrating area and support portion 231.Voice signal, the voice coil can be passed through in the voice coil 22
22 can generate vibration under the action of magnetic circuit system magnetic field.The edge of the vibrating diaphragm 21 is fixed in the sounding device, institute
It states voice coil 22 to be connected on the vibrating area, in the outstanding magnetic gap formed with the magnetic circuit system of voice coil 22.Voice coil is generating vibration
It is able to drive the vibrating diaphragm when dynamic to vibrate together, diaphragm oscillations is made to generate sound.In the present embodiment, the support portion of centring disk with
Voice coil connection may insure that voice coil, without departing from center, keeps voice coil in stress, only move axially in reciprocal fashion in vibration,
It avoids the problem that polarizing.
Further, the support column 30 passes through the through-hole and exposes from the upper end of the magnetic circuit system.As Fig. 1-3 institute
Show, the top of the support column 30 is exposed from the top of the magnetic circuit system, and the support portion 231 is fixed on the support column 30
On.The contact that is electrically connected can also be set on the support column 30, connect with voice coil leads, external equipment and voice coil formation are electrically connected
It connects.
Sounding device provided by the invention is different from the prior art, by changing the structure of centring disk, determines to change
The connection type of heart branch piece and voice coil and external circuit, connect the support portion of centring disk periphery with voice coil, to promote magnetic
The utilization rate of road system.Meanwhile support column and component as Continuity signal, it is arranged in the through-hole at the center of magnetic circuit system,
Save space.This setup helps avoid voice coil and generates polarization in sounding device, in sounding device overall volume
The output power of sounding device can also be improved in the case where constant, to meet the requirement of acoustical behavior.
Optionally, the centring disk 23 includes at least three linking arms 233, and each linking arm 233 is opposite
In the formal distribution that the center of the centring disk 23 is centrosymmetric.It is electrically connected since there are two on voice coil 22 with external circuit
The lead connect, this two leads draw position be centrosymmetric relative to voice coil center, so voice coil vibration when, lead pair
The active force of pullling that voice coil generates is symmetrical.And it is in relative to the center of the centring disk by least three linking arms
Centrosymmetric formal distribution can effectively improve the stability and balance of centring disk linking arm, reduce voice coil and generate partially
The risk of vibration extends the service life of centring disk, helps to improve the sound quality of sounding device.
Specifically, the linking arm 233 extends on the fixed part 232 from the support portion 231 bending.Such as Fig. 2 institute
Show, the linking arm 233 is extended on the fixed part 232 with certain bending, which is arc-shaped design, is avoided curved
The region that stress is concentrated when folding, can reduce a possibility that linking arm cracks under effect of vibration, improves centring disk
Reliability.
Optionally, the fixed part is the first fixed part and the second fixed part, and a pair of linking arm is connected to described
On first fixed part, linking arm described in another pair is connected on second fixed part.Wherein, the first fixed part and second is fixed
The position then identical center for being distributed in centring disk of structure and size.Two fixed parts are arranged side by side, and the top with support column
Proper pair.
In a kind of possible embodiment, the top of the support column 30 has first to be electrically connected contact 33, the voice coil
With described first be electrically connected contact 33 formation be electrically connected.As depicted in figs. 1 and 2, the top of the support column 30 is from the magnetic circuit system
The top of system is exposed, and the support column 30 is used to voice signal introducing the voice coil 22.In the present embodiment, support column is in
T-type structure, support column protrude into magnetic circuit system, and the one end for being electrically connected contact with first is exposed from the top of this road system towards institute
State the fixed part of centring disk.
Specifically, lead is led on the voice coil.After the lead is drawn from the voice coil, to bend the shape extended
Formula extends to the top of the support column positioned at the central area of voice coil.Wherein, the first quantity for being electrically connected contact 33 can be one
Or two, two first contacts 33 that are electrically connected are located on the first fixed part and the second fixed part of support column.In this way, two are drawn
The line contact that can be electrically connected respectively with first forms be electrically connected correspondingly.The voice coil passes through two leads and correspondence
First contact that is electrically connected of connection is connected to form signal circuit.
Wherein, the V-shaped extension of the lead, by lead design at V-type can either make lead have better deformability,
It is not easily broken damage, and can make lead self-recovery to original shape after voice coil stops vibration, lead is reduced and occurs not
A possibility that reversible plastic deformation.The present invention does not carry out concrete restriction to the bending shape of the lead, in other implementations
In mode, the lead design can also be extended at S-type extension or in other shapes.
In practical applications, one end of the lead is fixedly connected on described first and is electrically connected on contact 33, the other end and institute
The main body for stating voice coil is fixedly connected.When voice coil generates vibration, the both ends of lead inevitably generate relative displacement, vibration.This
In the case of, bend extension lead have better deformability, can be deformed with the vibration of voice coil, reduce voice coil because
A possibility that vibrating and being broken.On the other hand, lead can form buffering by deformation, avoid lead from generating voice coil excessive
Active force is pullled, reduce its generation pulls influence of the active force to the amplitude of voice coil, improves the electric energy conversion ratio of voice coil, guarantees
The sound of sounding device exports loudness.
Further, the bottom end tool of the support column 30 is electrically connected contact 32 there are two second.As shown in figure 4, described second
The contact 32 that is electrically connected is configurable for being formed with external equipment and be electrically connected, and two described second are electrically connected contact 32 through the support column
30 inside are electrically connected with two described first formation of contact 33 that are electrically connected.In practical applications, sounding device provided by the invention needs
It is assembled in other electronic equipments, such as is assembled in the equipment such as mobile phone, earphone, miniature loudspeaker.So sounding device is logical
It often needs to receive voice signal from other equipment and voice signal is converted to sound again.By being set in the bottom end of the support column
It sets second to be electrically connected contact 32, the voice signal on external equipment can be imported in the support column 30.Due to two second electricity
Tie point 32 be electrically connected respectively with two first contact 33 formation be electrically connected, so voice signal can through second be electrically connected contact 32,
First contact 33 that is electrically connected is transmitted on the lead.Another advantage of the embodiment is that the second electrical connection point is formed in
The bottom end of support column, and the through-hole penetrates through the magnetic circuit system, therefore be electrically connected by second contact that is electrically connected with external equipment
When, electrical connector easily can be configured from the bottom of magnetic circuit system, and then be electrically connected electrical connection with second.This design method
It is easy to implement electrical connection, the mode compatible degree being also assembled to sounding device on external equipment is higher.
In alternatively possible embodiment, it is formed in the centring disk 23 from the support portion 231 through connecting
Arm 233 extends to the circuit trace of fixed part 232, and the voice coil 22 passes through the support portion 231 or linking arm 233 and the electricity
The electrical connection of road cabling, described first contact 33 that is electrically connected are electrically connected by the fixed part 232 with the circuit trace.In this way, branch
Dagger as connection voice coil with the conductive member of external circuit, compared to traditional connection type, support column be easier to outside
Portion's electrical connector forms electrical connection, improves the reliability of electrical connection；Support column is arranged in magnetic circuit system, and hair will not be occupied
Other spaces inside acoustic device, improve the space utilization rate of sounding device.
As shown in Figure 3 and Figure 5, the voice coil 22 close to the centring disk support portion 231 two sides formed there are two
Lead connecting pin 221, two lead connecting pins 221 are oppositely arranged on the both ends of the voice coil 22 and form electricity with centring disk 23
Connection, circuit trace on centring disk 23 voice coil 22 and first on support column 30 can be electrically connected contact 33 are connect, thus with
External circuit conducting.It is electrically connected in this way, voice coil can be formed without longer lead with support column, draws compared to longer voice coil
Line reduces longer lead when voice coil generates vibration, lead inevitably in generate relative displacement, pull and occur being broken can
It can property.Using this embodiment, it is possible to prevente effectively from lead pulls active force to what voice coil generated, active force pair is pullled in reduction
The influence that the amplitude of voice coil generates, improves the electric energy conversion ratio of voice coil, guarantees the sound output loudness of sounding device.
Optionally, as shown in figure 3, the vibrating area of the voice coil 22 and vibrating diaphragm 21 is connected to the support portion 231
In both side surface.Since support portion 231 is located at the periphery of centring disk 23, by 231 both side surface of support portion respectively with voice coil 22
It is connected with the vibrating area of vibrating diaphragm 21, the size of voice coil and vibrating diaphragm can be increased, namely expand the ruler of magnetic circuit system in sounding device
It is very little.This helps to promote the utilization rate of sounding device magnetic circuit system and the acoustic quality of sounding device.
Preferably, the centring disk 23 includes four linking arms 233.As shown in Fig. 2, four linking arms
233 in pairs, and two pairs of support arms 233 are axisymmetricly distributed relative to the central axes of the centring disk 23.This point
In mode for cloth, support arm stability and balance in pairs is more preferable, can reduce the risk that voice coil generates polarization, facilitates
Improve the sound quality of sounding device.
Optionally, as shown in Figure 3,4, the support column may include side in inverted T shaped plastic body portion.Plastic body
Portion may include stem and the department of assembly 31 for being connected to stem bottom.The stem passes through the through-hole of magnetic circuit system, for realizing
The function of above-mentioned electrical connection.The department of assembly 31 then on the bottom surface of the magnetic circuit system, provides branch to the magnetic circuit system
Support effect.
It further include two metalworks on support column, two metalwork injection moldings are fixed in the plastic body portion.Institute
Stating has first end, the second end and middle part on metalwork.First end on the same metalwork is in the second end
Relatively parallel posture, the middle part are connected between the first end and the second end.As shown in figure 3, described first
End is electrically connected contact 33 for constituting above-mentioned first, and the second end is then used to constitute described second and is electrically connected contact 32.It is described
First end can expose from the top surface in the plastic body portion, and the second end is then from the bottom surface in the plastic body portion
Upper exposing.This configuration mode realizes signal conduction by the metalwork convenient for lead and external equipment.Moreover, metalwork
Middle part be moulded in inside plastic body portion, be not easy to interfere with each other with other conductive, magnetic conductive parts in sounding device.
The diameter of the periphery of the magnetic circuit system be first diameter D1, support column be located at the through-hole in part it is straight
Diameter is second diameter D2.Preferably, the second diameter D2 is less than or equal to 0.32 times of first diameter D1.The magnetic circuit system
Close magnetic gap part be to generate electromagnetic force contribution the best part, the position of the through-hole is far between the magnetic
Gap.Therefore, through-hole is opened up in the centre of the separate magnetic gap of magnetic circuit system and place support column, can effectively avoid magnetic circuit
The structural penalties of system are influenced caused by generating electromagnetic field.Preferably, support column reduces in technique controlled range as far as possible
Two diameter D2.It can be avoided in the range of D2≤0.32*D1 and cause substantive negative effect to the intensity for generating electromagnetic field,
Loss of sensitivity is in 0.2dB or less.
The diameter of the periphery of sounding device is third diameter D3.In a preferred embodiment of the invention, described first is straight
The ratio of diameter D1 and third diameter D3 is greater than or equal to 0.65.In the prior art, the frame positioned at magnetic circuit system periphery, shell
On be molded with the circuit devcie of pad for electrical connection, occupy the larger space of magnetic circuit system periphery.It is whole in sounding device
In the limited situation in the space of body, cause the available space for leaving magnetic circuit system itself for smaller.The present invention utilizes and is set to magnetic circuit
By voice coil and external electrical connections, the periphery of magnetic circuit system no longer needs to that other electrical connections are arranged the support column of system centre, thus
The periphery of magnetic circuit system saves space.Compared with the existing technology, the bigger of the size design of magnetic circuit system can be improved into magnetic
The performance of road system.Preferably, the ratio of the first diameter D1 and third diameter D3 is greater than or equal to 0.65.Optionally, institute
The ratio for stating first diameter D1 and third diameter is 0.75.
The sounding device further includes bearing frame 4.The bearing frame 4 is used for as its of magnetic circuit system and sounding device
Its component provides the effect of support, positioning, and all parts is allow to be fixedly connected into the device of an entirety.The bearing frame
4 center could be formed with hollow out 42, and the magnetic circuit system is arranged at the hollow out 42.
As shown in Figure 3,4, the magnetic circuit system can also include magnetic yoke 11, and the magnetic yoke 11 has bottom wall and from the bottom
The side wall for the annular extended on wall.Magnetic yoke 11 has been enclosed the accommodation space that can carry other components.Described
Several flanges 111 that the periphery of the oriented side wall extends are formed on the top of side wall.Wherein, the flange 111 is used for and institute
Bearing frame 4 is stated to form a fixed connection.Optionally, the magnetic yoke and the flange 111 are integrated stamping forming component.One
Stamping forming structural reliability is high, and is more convenient for being assembled.Certainly, it is ripe that this field also can be used between magnetic yoke and flange
The other way known is fixed together, and the present invention is without limitation.
As shown in fig. 6, being formed with positioning region on the lower end surface of the bearing frame 4.The magnetic yoke 11 is from the bearing frame
The side of the lower end surface of frame 4 is set at the hollow out 42.The flange 111 is corresponding with the position of the positioning region, flange 111
The bottom of the bearing frame 4 is extended in the horizontal direction, and the two forms a fixed connection, so that the magnetic circuit system and carrying
Frame 4 is fixedly connected.
As shown in Figure 6, it is preferable that the positioning region includes being formed with to determine on the lower end surface for be formed in the bearing frame 4
Position groove 41, the positioning groove 41 are recessed a distance upwards from the lower end surface of the bearing frame 4.Also, the positioning
Slot extends along the surface of the lower end surface, extends at the hollow out 42.That is, extending to the edge of hollow out 42.
Optionally, the bearing frame 4 is made of plastic material, and the positioning region includes being formed in the bearing frame
Hot melt structure 43 on 4 lower end surface.When the magnetic yoke 11 is assembled together with bearing frame 4, the flange 111 is in and institute
The corresponding position of hot melt structure 43 is stated, flange 111 can be contacted with hot melt structure 43.In the finished device of the sounding device
On, the hot melt structure 43 is handled by hot melt, and hot melt is covered on the flange 111, is formed and is fixed with the flange 111
Connection.Flange 111 is realized by way of hot-melt adhesive paste with hot melt structure 43 and is reliably fixedly connected, and guarantees the knot of sounding device
Structure reliability.
As shown in Figure 6, it is preferable that the positioning region may include the hot melt structure 43 and above-mentioned positioning groove 41.
The hot melt structure 43 is located in the positioning groove 41, and the flange 111 is embedded in the positioning groove 41, and recessed with positioning
The hot melt of hot melt structure 43 in slot 41 is fixedly connected.In the preferred embodiment, on the one hand, positioning groove 41 and flange 111
Fit system can be improved the positioning accuracy of bearing frame 4 Yu magnetic circuit system.On the other hand, heat is being carried out to hot melt structure 43
When molten processing, the hot melt structure 43 can be flowed into the positioning groove 41, and be wrapped in around the flange 111, thus
It improves and is fixedly connected with reliability between bearing frame 4 and magnetic yoke.Further, hot melt structure is accommodated by the locating slot,
Can be avoided hot melt structure at least part structure hot melt dissolve after, trickling to far from flange position, prevent due to hot melt
There is the problems such as flaw in product shape caused by structure is trickled.
Preferably, the shape of the hollow out 42 and the shape of the magnetic circuit system, magnetic yoke 11 match, so that 11 energy of magnetic yoke
It is enough that good dock or sealed connection is formed with bearing frame 4.For example, the magnetic circuit system cylindrical can integrally be tied
Structure.Hollow out 42 on the bearing frame 4 is then rounded, so that the magnetic circuit system is docked at the hollow out 42.
Further, it is formed in the embodiment of positioning groove 41 on the lower end surface of the bearing frame 4, by institute
The distance for being equivalent to 41 depth of positioning groove can be embedded in into positioning groove 41 by stating flange 111, so, the side wall of the magnetic yoke 11
End can closer to at the hollow out 42.If the flange 111 itself flushes in the top of the side wall of the magnetic yoke 11,
Or the top of the side wall of the slightly less than described magnetic yoke 11, then the top of the side wall of the magnetic yoke 11 can be embedded in the hollow out 42
Place.In this embodiment, the positioning accuracy between magnetic yoke and bearing frame 4 and leakproofness can be improved.And
And the technical characterstic due to using the cooperation of the lower end surface of flange and bearing frame in the present invention, and eliminate on bearing frame
Encapsulate magnetic yoke plastic shell structure, therefore, though the top of the side wall of the magnetic yoke to the hollow part insertion it is a bit of away from
From will not cause to have between bearing frame and magnetic yoke excessive lap, occupy the case where excessive space.Of the invention
In design, still there are enough spaces for increasing the volume of magnetic circuit system.Optionally, the flange itself flushes in the magnetic
The top of the side wall of yoke, the depth that the magnetic yoke is embedded into the hollow part are equivalent to the depth of the positioning groove.
Since bearing frame itself is made of metal material, rigidity is higher, described fixed when positioning groove being arranged on it
The depth of position groove can flexible choice according to actual needs, as long as the structural strength that not will cause the bearing frame is impaired i.e.
It can.The present invention does not limit this strictly, in practical applications, can also according to the practical structures intensity of bearing frame with
And the actual (real) thickness of flange is designed the depth of the positioning groove.
Preferably, the thickness of the flange is less than or equal to the depth of the positioning groove.The thickness of the flange and institute
It states the matching relationship between the depth of positioning groove and influences whether bonding strength between bearing frame and magnetic yoke.This preferred
Embodiment in, the lower surface of flange can be sunk into positioning groove, or be flush to the lower end surface of bearing frame, this
Design method can be such that flange is embedded in the positioning groove, improve connection reliability.The present invention is not intended to limit the flange
Thickness be necessarily less than or equal to the positioning groove depth.
The present invention also provides a kind of earphone products, above-mentioned sounding device is configured in the earphone.Have in earphone products
In the space of limit, sounding device designed by the invention can more effectively utilize space, the bigger magnetic circuit system of configuration volume
System and/or voice coil, to enhance the acoustical behavior of sounding device, and then meet the performance requirement of earphone.The earphone can be pleasant
Formula earphone or half In-Ear Headphones.
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 (14)
1. a kind of sounding device characterized by comprising
Magnetic circuit system, the magnetic circuit system are centrally formed with through-hole；
Vibration component, the vibration component include vibrating diaphragm, voice coil and centring disk, and the centring disk includes support portion, fixation
Portion and linking arm, the support portion are looped around around the fixed part, and the linking arm is connected to the fixed part and support
Between portion, there is vibrating area in the vibrating diaphragm, forms connection between the voice coil, vibrating area and support portion；
Support column, the support column pass through the through-hole and expose from the upper end of the magnetic circuit system, and the fixed part is fixed to be connected
It connects on the support column.
2. sounding device according to claim 1, which is characterized in that the top tool of the support column is electrically connected there are two first
Contact, lead is led on the voice coil, and the lead is electrically connected a little to be formed with described first and be electrically connected.
3. sounding device according to claim 2, which is characterized in that be formed in the centring disk from the support portion
The circuit trace of fixed part is extended to through linking arm, the lead passes through the support portion or linking arm and circuit trace electricity
Connection, described first contact that is electrically connected are electrically connected by the fixed part with the circuit trace.
4. sounding device according to claim 2, which is characterized in that the bottom end tool of the support column is electrically connected there are two second
Contact, described second be electrically connected contact be configurable for external equipment formed be electrically connected, two described second be electrically connected contacts pass through
It is electrically connected respectively with two described first inside the support column and a little forms electrical connection.
5. sounding device according to claim 1, which is characterized in that the vibrating area of the voice coil and vibrating diaphragm is connected to
In the both side surface of the support portion.
6. sounding device according to claim 3, which is characterized in that the centring disk includes four linking arms,
In pairs, two pairs of support arms are axisymmetricly distributed four linking arms relative to the central axes of the centring disk.
7. sounding device according to claim 3, which is characterized in that the fixed part is that the first fixed part and second are solid
Determine portion, a pair of linking arm is connected on first fixed part, and it is fixed that linking arm described in another pair is connected to described second
In portion.
8. sounding device according to claim 4, which is characterized in that the support column includes side in inverted T shaped plastics
Body part, the plastic body portion include stem and the department of assembly for being connected to stem bottom, and the stem passes through the magnetic circuit system
The through-hole of system, the department of assembly are overlying on the bottom surface of the magnetic circuit system；
The support column further includes two metalworks being molded in the plastic body portion, and the metalwork includes parallel
One end and the second end, and the middle part of connection first end and the second end, the first end expose the stem
Top surface form first and be electrically connected contact, the bottom surface that the second end exposes the support portion forms second and is electrically connected contact.
9. sounding device according to claim 8, which is characterized in that the diameter of the periphery of the magnetic circuit system is first straight
Diameter D1, the support column be located at the through-hole in part diameter be second diameter D2, the second diameter D2 be less than or
First diameter D1 equal to 0.32 times；
The diameter of the periphery of the magnetic circuit system is first diameter D1, and the diameter of the periphery of the sounding device is third diameter
The ratio of D3, the first diameter D1 and third diameter D3 are greater than or equal to 0.65.
10. sounding device according to claim 8, which is characterized in that the magnetic circuit system includes magnetic yoke, the magnetic yoke
Several flanges that oriented magnetic yoke periphery extends are formed at top edge；
The sounding device further includes bearing frame, and the bearing frame is centrally formed with hollow out, under the bearing frame
Positioning region is formed on end face；
The magnetic yoke is set to the hollow part from one side positioning of the lower end surface of the bearing frame, and the flange is in the horizontal direction
On extend to the lower section of the bearing frame and be fixedly connected with the positioning region.
11. sounding device according to claim 10, which is characterized in that the positioning region includes being formed in the bearing frame
Positioning groove on the lower end surface of frame, the positioning groove extend to the hollow part, and the flange is embedded in the positioning groove
In.
12. sounding device according to claim 10, which is characterized in that the bearing frame is plastic material, described fixed
Position portion includes the hot melt structure being formed on the lower end surface of the bearing frame；
The hot melt structure is fixedly connected with flange hot melt.
13. sounding device according to claim 11, which is characterized in that the positioning region further includes being formed in the carrying
Positioning groove on the lower end surface of frame, the positioning groove extend to the hollow part, and it is described fixed that the hot melt structure is located at
In the groove of position, the flange is in the positioning groove；
The shape of the hollow out and the shape of the magnetic yoke match, and the upper end of the magnetic yoke is in the hollow out, the magnetic
The depth that yoke is embedded in the hollow out is equivalent to the depth of the positioning groove.
14. a kind of earphone, which is characterized in that be provided in the earphone claim 1-13 it is one of any described in sounding dress
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/125707 WO2020087757A1 (en) | 2018-11-02 | 2018-12-29 | Sounding device and earphone |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303051 | 2018-11-02 | ||
| CN2018113030516 | 2018-11-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109495819A true CN109495819A (en) | 2019-03-19 |
| CN109495819B CN109495819B (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811326476.9A Active CN109495819B (en) | 2018-11-02 | 2018-11-08 | Sound production device and earphone |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109495819B (en) |
| WO (1) | WO2020087757A1 (en) |
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| CN110572757A (en) * | 2019-09-29 | 2019-12-13 | 歌尔股份有限公司 | Magnetizer and sound production device |
| CN110719554A (en) * | 2019-08-31 | 2020-01-21 | 歌尔股份有限公司 | Sound production device and electronic equipment thereof |
| CN111131982A (en) * | 2020-03-27 | 2020-05-08 | 共达电声股份有限公司 | Centering support piece and loudspeaker with same |
| CN113490130A (en) * | 2021-06-30 | 2021-10-08 | 潍坊歌尔丹拿电子科技有限公司 | Assembling tool |
| EP4106343A1 (en) * | 2021-06-16 | 2022-12-21 | Beijing Xiaomi Mobile Software Co., Ltd. | Basket assembly, audio unit and electronic device |
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Also Published As
| Publication number | Publication date |
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| WO2020087757A1 (en) | 2020-05-07 |
| CN109495819B (en) | 2020-11-20 |
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