CN109511061A - Mini-sound device and electronic product - Google Patents
Mini-sound device and electronic product Download PDFInfo
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- CN109511061A CN109511061A CN201811615289.2A CN201811615289A CN109511061A CN 109511061 A CN109511061 A CN 109511061A CN 201811615289 A CN201811615289 A CN 201811615289A CN 109511061 A CN109511061 A CN 109511061A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 description 9
- 239000007767 bonding agent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- 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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a kind of mini-sound device and electronic products.The mini-sound device includes two sets of sounding components, it include a vibrating diaphragm and a voice coil in every set sounding component, the voice coil is connected on the vibrating diaphragm, on the mini-sound device in the opposite direction, the vibrating diaphragm is configured to vibration sounding in the front of the vibrating diaphragm of two sets of sounding components；The mini-sound device further includes magnetic circuit system, the magnetic circuit system includes integrated annular magnetic conduction side wall, the annular magnetic conduction side wall is divided into two side walls area along the axis direction of itself, two sidewall regions respectively constitute the side magnetic circuit corresponding to two voice coils, the voice coil is located in the circular region of the annular magnetic conduction side wall, and the magnetic circuit system is configurable for driving the voice coil vibrations.Of the invention one has technical effect that the audio for generating more excellent effect for electronic product provides condition.
Description
Technical field
Electroacoustic switch technology of the present invention field, in particular it relates to a kind of mini-sound device and electronic product.
Background technique
In recent years, consumer electronics product has obtained quick development, the electronics such as smart phone, tablet computer, VR equipment
Product obtains the generally approval of consumer, and has obtained relatively broad application.Sounding device is in consumer electronics product
Important electroacoustic transduction component is widely used as loudspeaker, earpiece, earphone etc..With the performance of electronic product
It improves, the improvement of the acoustical behavior in relation to sounding device is also inevitable trend.
In existing sounding device, if vibration sounding source damage at work or some component capabilities not
It is good, then influence whether the sound quality of product.Especially in the electronic products such as mobile phone, tablet computer, each portion of sounding device
The size of part is small, is easy to damage in vibration sounding or production and processing.Electronic product is when being impacted, it is also possible to
Sounding device is caused to damage.On the other hand, with the development of acoustic technique, the acoustic efficiency of some high requests can not pass through
Existing sounding device is realized.
Summary of the invention
It is an object of the present invention to provide a kind of improved mini-sound devices.
According to the first aspect of the invention, a kind of mini-sound device, including two sets of sounding components, every set sounding are provided
It include that a vibrating diaphragm and a voice coil, the voice coil are connected on the vibrating diaphragm in component, the vibrating diaphragm of two sets of sounding components
Front on the mini-sound device in the opposite direction, the vibrating diaphragm is configured to vibration sounding；
The mini-sound device further includes magnetic circuit system, and the magnetic circuit system includes integrated annular magnetic conduction side wall,
The annular magnetic conduction side wall is divided into two side walls area along the axis direction of itself, and two sidewall regions respectively constitute and correspond to
The side magnetic circuit of two voice coils, the voice coil are located in the circular region of the annular magnetic conduction side wall, and the magnetic circuit system is matched
It is set to for driving the voice coil vibrations.
Optionally, the magnetic circuit system includes center magnetic conductive board, and the center magnetic conductive board divides the mini-sound device
For two workspaces, two sets of sounding components are located in two workspaces, and two of the annular magnetic conduction side wall
The sidewall region, which respectively corresponds, to be extended in two workspaces.
Optionally, the center magnetic conductive board has supporting part and fixed part, and the fixed part is from the edge of the supporting part
Extend to surrounding, the annular magnetic conduction side wall is looped around around the supporting part, has notch, institute on the annular magnetic conduction side wall
Fixed part is stated across the notch, the fixed part is configurable for being fixedly connected in the mini-sound device.
Optionally, the notch is from an end face of the annular magnetic conduction side wall along the axis direction of annular magnetic conduction side wall
Extend, the length that the notch extends in the axial direction is equal to the half of the height of the annular magnetic conduction side wall in the axial direction.
Optionally, multiple fixed parts are to be in rotational symmetry or centrosymmetric shape relative to the center of the supporting part
Formula extends to surrounding.
Optionally, the width on the fixed part close to the region of the supporting part is less than on the fixed part far from described
The width in the region of supporting part.
Optionally, there are gaps between the annular magnetic conduction side wall and the supporting part.
Optionally, the annular magnetic conduction side wall is formed with fluting, and the fluting supplies the lead drawn on the voice coil from institute
It states and extends to outside on the inside of annular magnetic conduction side wall.
Optionally, the magnetic circuit system includes two blocks of centring magnets, and two blocks of centring magnets are separately positioned on two institutes
It states in the circular region in sidewall region, two blocks of centring magnets magnetic pole close to each other opposite pole each other, the center magnetic
Iron is located in the circular region of the voice coil.
The present invention also provides a kind of electronic product, which includes product main body and above-mentioned mini-sound device,
The mini-sound device is arranged in the product main body.
According to one embodiment of the disclosure, there are two sets of sounding components in mini-sound device, generated for electronic product
The audio of more excellent effect provides condition.
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 explosive view for the mini-sound device that the specific embodiment of the invention provides；
Fig. 2 is the side sectional view for the mini-sound device that the specific embodiment of the invention provides；
Fig. 3 is the structural schematic diagram of annular magnetic conduction side wall and center magnetic conductive board 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.
It include two sets of sounding components, every set in the mini-sound device the present invention provides a kind of mini-sound device
It include a vibrating diaphragm and a voice coil in sounding component.Voice coil is connected on a side surface of vibrating diaphragm.The vibrating diaphragm can be
It is vibrated in mini-sound device, the edge of vibrating diaphragm can be fixedly connected in mini-sound device, and the central area of vibrating diaphragm can be with
It is vibrated up and down relative to edge along the normal defence line of itself.Voice coil can be acted in mini-sound device by electromagnetic drive
Power, to drive diaphragm oscillations sounding.
As shown in Figure 1, 2, two sets of sounding components are respectively facing the upper side and lower side in mini-sound device.Two institutes
The front for stating vibrating diaphragm 11 has been respectively facing opposite direction on mini-sound device.By to mini-sound device overall structure
Design, can make vibrating diaphragm 11 vibration generate sound be transmitted to except mini-sound device from the front of two vibrating diaphragms 11.?
In Fig. 1, embodiment shown in 2, above and below the front of two vibrating diaphragms 11 is respectively facing, sound is spread out of from upper and lower two sides.
It further include magnetic circuit system in the mini-sound device, the magnetic circuit system is used to generate the electromagnetic field that driving voice coil 12 vibrates.
The magnetic circuit system includes integrated annular magnetic conduction side wall 22, the annular magnetic conduction side wall 22 along itself axis direction,
Namely the short transverse along itself, two side walls area can be divided into.Two side walls area can respectively occupy annular magnetic conduction side wall
The height of 22 half, or occupy different height.Two sidewall regions, which are respectively used to constitute, corresponds to two voice coils 12
Side magnetic circuit.The voice coil 12 is located in the circular region of the annular magnetic conduction side wall 22.It is with embodiment shown in Fig. 2
Example, the top half of annular magnetic conduction side wall 22 form a sidewall region, which is surrounded on around the voice coil 12 of upside；Annular
The lower half portion of magnetic conduction side wall 22 forms another sidewall region, which is surrounded on around the voice coil 12 of downside.
The annular magnetic conduction side wall 22 forms the magnetic field that voice coil 12 can be driven to vibrate.When the sound for being passed through variation in voice coil 12
After signal, electromagnetic force is generated between voice coil 12 and magnetic circuit system, to generate vibration.
Two sets of sounding components are contained in mini-sound device provided by the invention, two sets of sounding components can work at the same time
Sounding.Two sets of sounding components can also be passed through different voice signals, and respective independent sounding is formed mutually on acoustic efficiency
Sound quality compensation, to form richer, higher performance acoustic efficiency.Alternatively, two sets of sounding components can be passed through identical sound
Sound signal, to improve sound intensity.On the other hand, there is damage of components, vibration in the component of wherein a set of sounding component
When the situation of exception, another set of sounding component can also keep normal acoustical behavior, to avoid being equipped with the miniature sounding
The product acoustic efficiency heavy losses of device.
In the inventive solutions, two sets of sounding components are arranged towards opposite direction.This design feature energy
Enough reduce a possibility that sound wave that two sets of sounding components generate interferes with each other.Moreover, two sets of oppositely arranged sounding components can
The space inside mini-sound device is saved to a certain extent, makes full use of magnetic circuit system described in the space of device inside
System.The overall structure shape of mini-sound device can be designed more compact.Further, pass through the annular of configuration integration
Magnetic conduction side wall can provide the function of magnetic circuit system simultaneously for upper and lower two sets of sounding components, accordingly reduce amount of parts, also
It can guarantee the performance of magnetic circuit driving.
Preferably, in the embodiment illustrated in fig. 2, two vibrating diaphragms 11 are in relatively in mini-sound device
Position at, the back side of two vibrating diaphragms 11 is mutually directed towards.It can more effectively be saved using this preferred structure design
Space, the space between the back side of two vibrating diaphragms is for being arranged the magnetic circuit system.The magnetic circuit system divides in this space
It is other to provide activation force to the voice coil 12 for being located at the upper side and lower side.
Preferably, the magnetic circuit system may include center magnetic conductive board 21, and the center magnetic conductive board 21 is by minitype acoustic generator
The inner space of part is divided into two workspaces.The center magnetic conductive board 21 is supported using permeability magnetic material, for correcting magnetic field, is improved
The utilization rate in magnetic field.As shown in Fig. 2, two sets of sounding components are located in two workspaces.By in miniature hair
Center magnetic conductive board 21 is set among acoustic device, easily can be set as two sets of sounding components in the two sides of center magnetic conductive board 21 and mention
For other components of the magnetic circuit system of activation force.Two sidewall regions of the annular magnetic conduction side wall 22 are led with center
Two workspaces that magnetic sheet 21 is marked off are corresponding.As shown in Fig. 2, the top half of annular magnetic conduction side wall 22 constitutes side wall
Area extends in the workspace of top；And the sidewall region that lower half portion is constituted extends in the workspace of lower section.With
In a part that the center magnetic conductive board for dividing workspace itself is also magnetic circuit system, the effect for collecting, strengthening magnetic field is provided.It is preferred that
Ground, the center magnetic conductive board can be fixedly connected in mini-sound device, thus for other components in mini-sound device
More stable, reliable support is provided.
As shown in Figure 1, 2, the axis direction of the annular magnetic conduction side wall 22 perpendicular to the center magnetic conductive board 21 surface,
It is looped around around the center magnetic conductive board 21.After annular magnetic conduction side wall 22 is assembled in mini-sound device, annular is led
The both ends of magnetic side wall 22 in the height direction, namely along the both ends on its axis direction, can extend respectively to by center
In two workspaces that magnetic conductive board is divided.In this way, as shown in Fig. 2, annular magnetic conduction side in the workspace being located above
The part-structure of wall 22 is used to form the side magnetic circuit of the voice coil 12 of driving top；Annular magnetic conduction in underlying workspace
The part-structure of side wall 22 is used to form the side magnetic circuit of the voice coil 12 of driving lower section.
In other embodiments of the invention, center magnetic conduction can be separately positioned on using two annular magnetic conduction side walls
On two surfaces of plate, to form the side magnetic circuit part for corresponding respectively to two voice coils.Two annular magnetic conduction side walls can be adopted
It is fixed on the magnetic conductive board of center with the mode for being bonded or welded connection.The advantages of this embodiment is, two independent rings
The case where shape magnetic conduction side wall interferes with each other in terms of magnetic field is weaker.Moreover, relative to the reality only with an annular magnetic conduction side wall
Apply mode, two independent annular magnetic conduction side walls its own structure it is simpler, without for how from the side of center magnetic conductive board
It extends to the other side and designs additional structure feature.
In another embodiment of the invention, it can also be respectively set in the both side surface of the center magnetic conductive board
Block-like side magnetic portion.For example, four blocks of side magnet are arranged on the upper surface of center magnetic conductive board, four blocks of side magnet are in an annular fashion
Distribution, by corresponding voice coil around wherein.On the lower surface of center magnetic conductive board, side magnet is set in the same way, it will
The voice coil of downside is around wherein.It is using the advantages of this embodiment, is interfered with each other more between upper and lower two groups of side magnet
It is few, can more effectively, be independently that different voice coils provide electromagnetic drive active force.
Preferably, as shown in Figure 1, the center magnetic conductive board 21 has 212 two parts of supporting part 211 and fixed part.Institute
It states supporting part 211 to connect for carrying other components of magnetic circuit system, or for being formed with other components, to be miniature hair
All parts in acoustic device provide the condition of support, positioning fixation.The fixed part 212 is from the edge of the supporting part 211
It extends out to surrounding.The fixed part 212 is used to for magnetic conductive board 21 entirety in center being securely fitted in mini-sound device.Example
Such as, mini-sound device has the periphery of independent shell or mini-sound device to be provided with module casing etc., the fixed part
It with grafting or can be adhesively fixed in the housing.
Further, in the embodiment for providing magnetic field only with an annular magnetic conduction side wall for two sets of sounding components,
The annular magnetic conduction side wall 22 is looped around around the supporting part, as shown in Figure 1.In this way, the supporting part 211 is led with annular
Magnetic side wall 22 cooperatively forms magnetic circuit system, and the fixed part 212 then extends outwardly for fixing.Preferably, as shown in Figure 1,
It could be formed with notch 221 on the annular magnetic conduction side wall 22.The notch 221 is used for the fixed part 212 for center magnetic conductive board 21
It passes through, so that supporting part 211 is located in the circular region of annular magnetic conduction side wall 22, fixed part 212 extend out to annular magnetic conduction
Except side wall 22, it is fixedly connected for other components with satellite microphone device.
Preferably, the notch 221 extends from an end face of the annular magnetic conduction side wall 22 to another end face, namely
Extend along the axis direction of annular magnetic conduction side wall 22.As shown in figure 3, the notch 221 occupies on annular magnetic conduction side wall 22
Height be annular magnetic conduction side wall half.The advantages of this embodiment, is that the center magnetic conductive board 21 is from notch 221
It is assembled in annular magnetic conduction side wall 22, the fixed part 212 is connected at notch 221 and stretches out from notch 221.Center magnetic conduction
Plate 21 is placed exactly in the centre of the height and position of annular magnetic conduction side wall 22, by annular magnetic conduction side wall 22 along its own axis side
To dividing equally, it is divided into two equal sidewall regions of height.In this way, the magnetic circuit system size being located in two workspaces is identical,
The be more convenient for mini-sound device configures identical, symmetrical acoustical behavior.
Optionally, there are multiple fixed parts, multiple fixed parts are relative to the supporting part on the center magnetic conductive board
Center in rotational symmetry or centrosymmetric form to surrounding extend.This design method makes annular magnetic conduction side wall and center
More evenly, symmetrically, structural stability is higher for stress between magnetic conductive board.For example, solid with two pieces on the center magnetic conductive board 21
Portion 212 is determined, as shown in Figure 1, two pieces of fixed parts 212 are centrosymmetric distribution relative to the center of center magnetic conductive board 21.Two pieces solid
Determine portion 212 symmetrically to stretch out to the periphery of supporting part 211.Further, the fixed part 212 is connected to the width on supporting part
Relative narrower each extends over after extending one end distance to two sides, so that it is in " fourth " font that fixed part 212 is whole.Correspondingly, institute
It states and is opened up on annular magnetic conduction side wall 22 there are two notch 221, stretched out for fixed part 212.The advantages of this embodiment is, Gu
The relatively narrow part for determining portion 212 corresponds to the notch 221 opened up on above-mentioned annular magnetic conduction side wall 22.Annular magnetic conduction side wall 22
On the narrower width of notch 221 that opens up, correspondingly, also smaller to the magnetic conduction function influence of annular magnetic conduction side wall 22.Supporting part
The part extended respectively to two sides is located at the outside of annular magnetic conduction side wall, wouldn't will affect the structure of annular magnetic conduction side wall, and
But also supporting part has more structures that can be fixedly connected with other components of mini-sound device, raising is fixedly connected reliable
Property.
In another embodiment, it can have four pieces of fixed parts on the center magnetic conductive board.Four pieces of fixed part phases
The center of center magnetic conductive board is distributed in rotational symmetry.Correspondingly, corresponding on annular magnetic conduction side wall to open up there are four notch, it supplies
The fixed part is stretched out from annular magnetic conduction side wall.The advantages of this embodiment, is that multiple fixed parts can be from each side
More stable support, fixed function are provided to for center magnetic conductive board.
It preferably, can be by sticking patch by the notch after annular magnetic conduction side wall 22 is fixedly connected with center magnetic conductive board 21
221 defect point is filled up.The notch 221 can cause to a certain extent the magnetic field of magnetic circuit system to external diffusion, influence magnetic
The utilization rate of field.
Preferably, the supporting part of center magnetic conductive board and fixed part 212 are also possible to parts processing, and supporting part setting is existed
After the corresponding position of annular magnetic conduction side wall 22, then fixed part 212 is Nian Jie with supporting part across annular magnetic conduction side wall 22, at this point,
Notch 221 as shown in Figure 1 on annular magnetic conduction side wall 22 is not needed, it is only necessary to which there is the gap of perforation to wear for fixed part 212
It crosses.It will be understood by those skilled in the art that in the case where that can guarantee installation accuracy, the case where avoiding supporting part from tilting
Under, this embodiment is also possible.The advantages of this embodiment, is, reduces the size of the notch as far as possible, from
And improve the utilization rate in magnetic field.Certainly, in the integrally formed embodiment of frame component, fixed part can also be molded directly within
On side wall.
Optionally, it can also be formed with fluting 222 on the annular magnetic conduction side wall 22, the fluting 222 is supplied from the sound
The lead 121 drawn on circle 12 is pierced by.Two leads 121 are usually led on the voice coil 12, the lead 121 is for being connected to
At the signal tie point of mini-sound device, for forming signal circuit in voice coil 12.Voice coil 12 is located at annular magnetic conduction side wall
In 22 regions surrounded, and signal tie point is generally arranged at except magnetic circuit system.Lead 121 on voice coil 12 can be from annular
It draws and is extended at the signal tie point except magnetic circuit system at notch through-hole 213 on magnetic conduction side wall 22.As shown in Figure 1
Embodiment in, an annular magnetic conduction side wall 22 is used, since the upper and lower ends of the annular magnetic conduction side wall 22 respectively correspond
In the voice coil 12 of two sets of sounding components.Therefore, the fluting 222 is respectively formed at the both ends of annular magnetic conduction side wall 22.Both ends
On fluting 222 be pierced by respectively for the leads 121 of two voice coils 12.Preferably, have two on every one end of annular magnetic conduction side wall 22
A fluting 222, two flutings 222 are centrosymmetric distribution on the end face of annular magnetic conduction side wall 22.Two of the same end
Fluting 222 corresponds respectively to two leads 121 drawn on a voice coil 12.
In the embodiment using two annular magnetic conduction side walls, the separate center magnetic conduction of each annular magnetic conduction side wall
It could be formed with the fluting for lead outflow on one end of plate.
Optionally, as shown in Figure 1, 2, the magnetic circuit system further includes two blocks of centring magnets 23, two blocks of centring magnets
23 are separately positioned in the both side surface of the center magnetic conductive board 21.The centring magnet 23 is used for and the annular magnetic conduction side wall
22 or the side magnetic portions of other forms cooperatively form magnetic gap.As shown in Fig. 2, having between annular magnetic conduction side wall 22 and centring magnet 23
There is certain interval, which is magnetic gap, is formed with magnetic field.Described 12 at least part of voice coil is suspended from the magnetic gap,
Magnetic circuit system forms electromagnetic force to voice coil 12 by magnetic gap.Correspondingly, the centring magnet 23 is located at the voice coil 12
In circular region.
Preferably, two blocks of centring magnets 23 close to or the magnetic pole of the side that is attached at center magnetic conductive board be mutual
Anisotropic magnetic pole.By taking structure shown in Fig. 2 as an example, if the lower surface of the centring magnet 23 of upside is the pole N, the center of downside
The upper surface of magnet 23 is the pole S.The advantages of this embodiment, is that two centring magnets 23 can be acted on by magnetic absorption
It is directly absorbed and fixed on center magnetic conductive board 21, increases the structure being fixedly connected on centring magnet 23 on center magnetic conductive board 21
Reliability.On the other hand, this configuration mode has the effect of enhancing to magnetic field strength, improves whole magnetic field strength, energy
Enough effective acoustical behavioies and sensitivity for improving loudspeaker.Except magnetic absorption, it is viscous to can be combined with bonding agent
It the modes such as connects, realizes being reliably connected for centring magnet and center magnetic conductive board.
It must be opposite pole that the present invention, which is not intended to limit the magnetic poles of two centring magnets in the side close to center magnetic conductive board,.
It, can be close by the like pole of two centring magnets on the basis of can guarantee the stabilization assembly connection of two centring magnets
Center magnetic conductive board.
In some embodiments, as shown in figure 3, being penetrated through on the supporting part 211 of center magnetic conductive board 21 at least provided with one
Through-hole 213.In the embodiment that centring magnet 23 is fixedly connected by bonding agent with centring magnet 23, if bonding agent is used
Measure larger, then bonding agent is able to enter through-hole 213 under the extruding of centring magnet 23 and flow to the another of center magnetic conductive board 21
Side.So that bonding agent is more evenly distributed, the adhesive strength of the centring magnet 23 of the other side is improved.On the other hand, at least one
Bonding agent is accommodated in a through-hole to connect the centring magnet in supporting part both side surface, the colloid in through-hole can connect supporting part
The centring magnet of two sides.Two centring magnets are directly bonded, so that it can preferably be fixed on the magnetic conductive board of center.
In some embodiments, as shown in figure 3, through-hole 213 can be circle.In other examples, or
The hole of the other shapes such as rectangular, diamond shape, the disclosure are not intended to limit this.
In some embodiments, as shown in figure 3, through-hole 213 on center magnetic conductive board 21 with centrosymmetric formal distribution.
It, can be by the center of the centrally disposed magnetic conductive board 21 of through-hole 213 when through-hole 213 is one.Further, Duo Getong
Hole can along lineal layout on the center line of center magnetic conductive board or in matrix arrangements on the magnetic conductive board of center, the application to this simultaneously
It does not limit.
In embodiments of the present invention, the annular magnetic conduction side wall is looped around around the center magnetic conductive board.?
In preferred embodiment, center magnetic conductive board has supporting part and fixed part, and annular magnetic conduction side wall is centered around the supporting part week
It encloses.It is described annular magnetic conductive board inner surface can there are certain gaps between the supporting part.Annular magnetic conduction side wall and carrying
It is not the relationship being tightly connected between portion.In this way, air exchange can be carried out between two workspaces of center magnetic conductive board two sides.
When two voice coils and vibrating diaphragm work at the same time, the air pressure of the location of center magnetic conductive board can change with vibration.And such as
Fruit can allow the air between two workspaces mutually to circulate, and can alleviate air pressure change to a certain extent, drop hypobaric
Variable quantity, to reduce interference of the air pressure to diaphragm oscillations.
In the embodiment only with an annular magnetic conduction side wall, centring magnet needs the side wall with annular magnetic conduction side wall
Between have gaps to form magnetic gap.Preferably, the size of supporting part and the size of centring magnet can be made to match, held
Only part is connect with the side wall of annular magnetic conduction side wall in load portion, so that shape between the supporting part of center magnetic conductive board and annular magnetic conduction side wall
At having engraved structure, and then the better weight for mitigating magnetic circuit system, magnetic field is corrected.On the other hand, engraved structure can be more preferable
Balance supporting part two sides air pressure, promote the acoustical behavior of loudspeaker.
Optionally, the mini-sound device may include shell 3, and the shell 3 is for carrying sounding component, magnetic circuit system
The components of system and other mini-sound devices.As shown in Figure 1, 2, shape is distinguished on two of the shell 3 symmetrical surfaces
At there is an opening, two vibrating diaphragms 11 are located at two openings, vibrating diaphragm 11 just facing towards the outside of opening.It is described
The sound for generating the vibration of vibrating diaphragm 11 that is open reaches except mini-sound device.
Center magnetic conductive board in the above-described embodiment has fixed part, and the fixed part may be coupled to the shell
In, center magnetic conductive board forms a fixed connection with shell.Above-mentioned annular magnetic conduction side wall can not pass through weldering with the center magnetic conductive board
The mode connect, being bonded is fixedly connected.But by being assembled in shell after, made by the limit effect of shell, center magnetic conductive board
Annular magnetic conduction side wall is obtained to be fixed in mini-sound device.In embodiment as shown in Figure 1, 2, the annular magnetic conduction side wall 22
Snap-fit relationship is formed with center magnetic conductive board 21 by the notch 221.Shell 3 then includes upper casing and lower casing, upper casing and lower casing
Annular magnetic conduction side wall 22 can be limited from the both ends of annular magnetic conduction side wall 22 after fastening.Magnetic conductive board 21 and shell at center
Under 3 common position-limiting action, annular magnetic conduction side wall 22 can be fixed in mini-sound device.Optionally, the fixed part
212 can be fixedly attached on the shell by structure types such as bonding, hot melt, clampings.
In addition, it must include the center magnetic conductive board that the present invention, which is not intended to limit the magnetic circuit system,.In another embodiment party
In formula, partition could be formed in the shell, two sets of sounding components are separated.The magnetic circuit system then includes under two
Magnetic conductive board, two lower magnetic conductive boards are separately fixed in the both side surface of the partition.It is arranged again on the lower magnetic conductive board
The components such as annular magnetic conduction side wall, centring magnet.The advantages of this embodiment, is that the magnetic circuit system is for two sets of sounding groups
Part does not share a center magnetic conductive board, and interfering with each other for generating between two parts magnetic circuit is less.
The present invention also provides a kind of electronic product, which includes product main body and above-mentioned mini-sound device.
The mini-sound device is arranged in the product main body.Mini-sound device can be used as the loudspeaker of electronic product, listen
Cylinder etc..Can be according to voice signal using the electronic product of mini-sound device the characteristics of, generation is richer, effect is more excellent
Sound.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of mini-sound device, which is characterized in that include a vibrating diaphragm in every set sounding component including two sets of sounding components
With a voice coil, the voice coil is connected on the vibrating diaphragm, and the front of the vibrating diaphragm of two sets of sounding components is in the miniature hair
On acoustic device in the opposite direction, the vibrating diaphragm is configured to vibration sounding；
The mini-sound device further includes magnetic circuit system, and the magnetic circuit system includes integrated annular magnetic conduction side wall, described
Annular magnetic conduction side wall is divided into two side walls area along the axis direction of itself, and two sidewall regions are respectively constituted corresponding to two
The side magnetic circuit of voice coil, the voice coil are located in the circular region of the annular magnetic conduction side wall, and the magnetic circuit system is configured as
For driving the voice coil vibrations.
2. mini-sound device according to claim 1, which is characterized in that the magnetic circuit system includes center magnetic conductive board,
The mini-sound device is divided into two workspaces by the center magnetic conductive board, and two sets of sounding components are located at two institutes
It states in workspace, two sidewall regions of the annular magnetic conduction side wall, which respectively correspond, to be extended in two workspaces.
3. mini-sound device according to claim 2, which is characterized in that the center magnetic conductive board is with supporting part and admittedly
Determine portion, the fixed part extends from the edge of the supporting part to surrounding, and the annular magnetic conduction side wall is looped around the supporting part
Around, there is notch on the annular magnetic conduction side wall, the fixed part passes through the notch, and the fixed part is configurable for
It is fixedly connected in the mini-sound device.
4. mini-sound device according to claim 3, which is characterized in that the notch is from the annular magnetic conduction side wall
One end face extends along the axis direction of annular magnetic conduction side wall, and the length that the notch extends in the axial direction is equal to the ring
The half of the height of shape magnetic conduction side wall in the axial direction.
5. mini-sound device according to claim 3, which is characterized in that multiple fixed parts relative to described to hold
The center in load portion extends in rotational symmetry or centrosymmetric form to surrounding.
6. mini-sound device according to claim 3, which is characterized in that close to the supporting part on the fixed part
The width in region is less than the width in the region on the fixed part far from the supporting part.
7. mini-sound device according to claim 3, which is characterized in that the annular magnetic conduction side wall and the supporting part
Between there are gaps.
8. mini-sound device according to claim 1, which is characterized in that the annular magnetic conduction side wall is formed with fluting,
The fluting extends to outside on the inside of the annular magnetic conduction side wall for the lead drawn on the voice coil.
9. mini-sound device according to claim 1, which is characterized in that the magnetic circuit system includes two blocks of center magnetic
Iron, two blocks of centring magnets are separately positioned in the circular region in two sidewall regions, two pieces of centring magnet phases
Mutually opposite pole, the centring magnet are located in the circular region of the voice coil close magnetic pole each other.
10. a kind of electronic product, which is characterized in that including product main body and claim 1-9 it is one of any described in miniature hair
Acoustic device, the mini-sound device are arranged in the product main body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615289.2A CN109511061B (en) | 2018-12-27 | 2018-12-27 | Miniature sound generating device and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615289.2A CN109511061B (en) | 2018-12-27 | 2018-12-27 | Miniature sound generating device and electronic product |
Publications (2)
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| CN109511061A true CN109511061A (en) | 2019-03-22 |
| CN109511061B CN109511061B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811615289.2A Active CN109511061B (en) | 2018-12-27 | 2018-12-27 | Miniature sound generating device and electronic product |
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| CN114928796A (en) * | 2022-03-31 | 2022-08-19 | 歌尔股份有限公司 | Double-sided sound production device and electronic equipment |
| US20220322013A1 (en) * | 2021-03-30 | 2022-10-06 | Fortune Grand Technology Inc. | Double-sided vibrating speaker |
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