CN110113696A - Vibration-sound generating device and electronic product - Google Patents
Vibration-sound generating device and electronic product Download PDFInfo
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- CN110113696A CN110113696A CN201910330099.4A CN201910330099A CN110113696A CN 110113696 A CN110113696 A CN 110113696A CN 201910330099 A CN201910330099 A CN 201910330099A CN 110113696 A CN110113696 A CN 110113696A
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- vibration
- coil
- shell
- permanent magnet
- magnetic
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Abstract
The invention discloses a kind of vibration-sound generating device and electronic products.The device includes shell, fixing piece and driving assembly；At least part of the shell is configured to vibrate relative to the fixing piece；The driving component includes at least one coil and halbach magnets, the coil is fixedly connected with the fixing piece, the halbach magnets are fixedly connected with the shell or the halbach magnets are fixedly connected with the fixing piece, and the coil is fixedly connected with the shell；Plane where the coil is vertical with the part for vibration of the shell, the coil is located at the side of the halbach magnets, the annular end face of the coil passes through the magnetic field-enhanced region of the halbach magnets towards the halbach magnets, the coil.
Description
Technical field
The present invention relates to electroacoustic switch technology fields, more particularly, to a kind of vibration-sound generating device and electronic product.
Background technique
Sounding device is electroacoustic transduction element important in electronic product, for current signal to be converted into sound.In recent years
Carry out the fast development with electronic product, is also improved accordingly applied to the sounding device on electronic product.
It is traditionally used for the principle that the sounding device of earpiece uses and pushes air vibration sounding for vibrating diaphragm.In the recent period, with
Comprehensively screen become mobile phone the main direction of development, how screen without aperture design under realize handset function, be provided simultaneously with more
Good sense of hearing experience, is the technical problem currently faced.In this regard, those skilled in the art develop using screen vibration sounding
Technical solution.
A kind of technical solution that those skilled in the art use is as shown in Figure 1, the technical solution uses an electromagnet 02
The structure distribution mode staggered relatively with a magnet 03, by opening, closing electromagnet 02, or the magnetic of switching electromagnet 02
Pole, so that generating the absorption of variation, repulsive interaction between electromagnet 02 and magnet 03.Magnet 03 is fixed on mobile phone screen 01 again
On, electromagnet 02 is fixed on component motionless in mobile phone, so as to make mobile phone screen 01 generate vibration.
In this technical solution, it is assumed that vertical direction displacement is x, is attraction between two magnets, the first magnet and the
There is one between two magnets and is displaced relevant directed force F (x).The restoring force of screen stiffness by itself is F (kmsx), is existed at this time
The state of dynamic balanceAfter the coil of its electromagnet 02 is powered, the magnetic field between two magnet is disturbed, therefore
Active force between electromagnet 02 and magnet 03 is broken balance, such as: due to the magnetic field in the same direction of intensifying current suction, two
A magnet has a trend close to each other, while screen has in reversed a restoring force and motion process one
Damping force, therefore the equation of motion is:
Wherein B is equivalent magnetic induction intensity, and H is Equivalent Magnetic Field intensity, the equivalent face that S interacts between two permanent magnets
Product.
But this technical solution equally exists the larger problem of occupied space, is unfavorable for the lightening structure of mobile phone and sets
Meter.Under the premise of in order to make mobile phone screen 01 generate sufficiently large amplitude, need to reserve enough spaces between two magnet,
Otherwise it will cause and collide between magnet and electromagnet 02, seriously affect the acoustical behavior of screen sounding.For this purpose, will necessarily be
The thickness direction of mobile phone occupies more spaces.
In addition, magnet is usually the magnet of monolith, the magnetic density of this magnet is low, and magnetic field utilization rate is low, electronic product
Driving force it is small.
Summary of the invention
It is an object of the present invention to provide the new solutions of a kind of vibration-sound generating device and electronic product.
According to the first aspect of the invention, a kind of vibration-sound generating device is provided.The device includes shell, fixing piece and drive
Dynamic component；At least part of the shell is configured to vibrate relative to the fixing piece；The driving component includes at least
One coil and halbach magnets, the coil are fixedly connected with the fixing piece, halbach magnets and described outer
Shell is fixedly connected or the halbach magnets are fixedly connected with the fixing piece, the coil and the fixed company of the shell
It connects；Plane where the coil is vertical with the part for vibration of the shell, and the coil is located at the Halbach magnetic
The side of body, for the annular end face of the coil towards the halbach magnets, the coil passes through the halbach magnets
Magnetic field-enhanced region.
Optionally, the halbach magnets are at least two groups, form gap between two groups of adjacent halbach magnets,
The coil is located in the gap.
Optionally, halbach magnets described in every group include three pieces of permanent magnets along direction of vibration arrangement, positioned at both ends
The magnetizing direction of permanent magnet is perpendicular to direction of vibration, and magnetizing direction is on the contrary, the magnetizing direction for being located at the permanent magnet at middle part is parallel
In direction of vibration；The magnetizing direction phase of the permanent magnet at the both ends positioned at direction of vibration of halbach magnets described in two adjacent groups
Together, the magnetizing direction positioned at the permanent magnet at middle part is opposite.
Optionally, the driving component further includes protective shell, and the halbach magnets pass through protective shell and the shell
For vibration part be fixedly connected.
Optionally, the protective shell includes side and the open end that is surrounded by the side, and the coil is opened from described
Mouth end is protruded into the protective shell, one far from the gap of the halbach magnets described in two group adjacent with the side
Side is provided with magnetic conductive board.
Optionally, the centre of the coil has through-hole, is the routing region of coil, the cabling area around the through-hole
Domain includes that the first routing region of one section of part for vibration close to the shell and one section are used for far from the shell
The direction of routing of second routing region of the part of vibration, first routing region and the second routing region is parallel to described outer
The surface of the part for vibration of shell；
The shape between the permanent magnet of the part for vibration of the shell of halbach magnets described in two adjacent groups
At magnetic field, first routing region passes through the magnetic field；The use far from the shell of halbach magnets described in two adjacent groups
Magnetic field is formed between the permanent magnet of the part of vibration, second routing region passes through the magnetic field.
It optionally, further include lower casing, the coil is fixed on the lower casing, and the lower casing is fixed with the fixing piece
Connection.
It optionally, further include that magnetic floats permanent magnet, the magnetic floats permanent magnet and is arranged on the lower casing, and the magnetic floats permanent magnetism
Body repels each other with the halbach magnets.
Optionally, the middle part of the lower casing forms bulge-structure, and the coil is fixed on the bulge-structure, described
Magnetic floats at least side that permanent magnet is set to the bulge-structure, and the halbach magnets and the magnetic float that permanent magnet is opposite to be set
It sets；Or
The lower casing is laminated structure, and the magnetic floats permanent magnet and is arranged on the lower casing, and the coil is arranged on
The magnetic floats on permanent magnet.
Optionally, the protective shell is permeability magnetic material.
Optionally, the part for vibration of the shell is screen or the rear cover opposite with the screen.
According to another aspect of the present invention, a kind of electronic product is provided.The product includes: above-mentioned vibration sounding dress
It sets；Product main body, the fixing piece are a part of structure of the product main body, and the driving component is arranged in the product master
In body.
Optionally, the fixing piece is center, PCB or the side wall in the product main body.
According to one embodiment of the disclosure, vibration-sound generating device provided by the invention compared with the existing technology, on the one hand
At least local vibration of shell can be directly driven.
On the other hand, shell can be preferably protected, the impaired risk of shell is reduced.Coil and halbach magnets difference
It is directly arranged on fixing piece and shell, directly externally hull shape ensure that efficient vibration transmission efficiency at driving.By driving group
The direct drive mode that part and vibration component are directly connected to simplifies the principle of driving case vibration, and shell is after by Ampere force
Vibration can directly be generated.This design method effectively increases vibration transformation efficiency, resonates without being caused by oscillator vibration
And then drive case vibration.This is designed so that the amplitude basic one that the amplitude and driving assembly that shell can be generated can be generated
It causes, the space for keeping for driving assembly can be designed according to the performance requirement to shell amplitude.It is bright without being reserved for driving assembly
The aobvious oscillation space greater than shell peak swing.
On the other hand, halbach magnets form magnetic field-enhanced region, and coil is located at magnetic field-enhanced region.Compared to common
Magnet, the magnetic densities of halbach magnets is high, and magnetic field utilization rate is high, and driving force is big, and the Ampere force that coil is subject to can be more
It more balances greatly, the vibration of vibration component is more stable, and more strongly, starting of oscillation speed is faster.
On the other hand, vibration-sound generating device uses split-type design, and setting bullet is not needed between protective shell and fixing piece
The flexibility of piece, installation is higher.
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 a kind of side sectional view of screen vocal skill scheme in the prior art.
Fig. 2 is the explosive view of the driving assembly of vibration-sound generating device provided by the invention.
Fig. 3 is a kind of side sectional view of vibration-sound generating device provided by the invention.
Fig. 4 is the side cross sectional views of another vibration-sound generating device provided by the invention
Fig. 5 is a kind of side sectional view of another angle of vibration-sound generating device provided by the invention.
Fig. 6 is the shaft side figure of the vibration-sound generating device of not set protection cap provided by the invention.
Fig. 7 is a kind of side sectional view of electronic product provided by the invention.
Fig. 8 is the partial enlarged view of Fig. 7.
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.
The present invention provides a kind of vibration-sound generating devices.The sounding device includes vibration component and driving assembly.Such as Fig. 2,3
Shown, the vibration component includes shell and fixing piece.At least part of the shell is configured to relative to the fixation
Part vibration.The shell has sufficiently large vibration area.For example, shell for vibration part for screen 20 or with institute
State the opposite rear cover 22 of screen 20.It is illustrated by taking screen 20 as an example below.The fixing piece can be the sounding device and be answered
A certain fixation member in electronic product, is also possible to the part of fixation being separately configured.
As shown in figure 8, the driving component includes at least one coil 16 and halbach magnets 10.The coil 16 by
Conducting wire coiling structure in a closed ring shape in one direction.The centre of the coil 16 has through-hole.It is line around the through-hole
The routing region of circle 16.The routing region refers to that the region that the lead in coil 16 is actually passed through, entire routing region are in
It is cyclic annular.
For example, the routing region includes one section of part (for example, screen 20) for vibration close to the shell
The second routing region 16b of first routing region 16a and one section of part for vibration far from the shell, described first walks
The direction of routing of line region 16a and the second routing region 16b are parallel to the surface of the part for vibration of the shell；
The coil 16 is fixedly connected with fixing piece.For example, coil 16 is directly fixedly connected with fixing piece, or pass through it
His component (for example, lower casing) is fixedly connected indirectly with fixing piece.The halbach magnets 10 and the fixed company of the shell
It connects.For example, driving assembly further includes protective shell.The halbach magnets 10 are fixed in the protective shell 11.Preferably, institute
Stating protective shell 11 is permeability magnetic material, for example, mild steel, SPCC etc..The protective shell 11 of permeability magnetic material can efficiently reduce leakage field.Institute
Protective shell 11 is stated to be fixedly connected with the screen 20.Coil 16 during the energization, can constantly generate heat.If by coil 16 and screen
Curtain 20 is fixedly connected, then heat is easy to cause to damage to screen 20.In this example embodiment, coil 16 be fixedly connected with fixing piece without
It is to be connect with screen 20, the fever that can be effectively prevented from coil 16 causes to damage to screen 20.
Further, since be arranged on fixing piece, therefore coil 12 and the connection of external circuit are more easier.
In other examples, the halbach magnets are fixedly connected with the fixing piece, the coil and the shell
It is fixedly connected.
There is axis, in embodiments of the present invention, the axis of the coil 16 in the coil 16 itself of closed circular
It is parallel to the surface of the screen 20, as shown in figure 8,16 place plane of the coil and the screen vertical.As shown in figure 3,
The protective shell 11 includes side and the open end 23 surrounded by the side.The coil 16 is protruded into from the open end 23
In the protective shell 11.
The halbach magnets are located at the side of the coil 16.Halbach magnets include muti-piece permanent magnet, muti-piece
Permanent magnet is arranged in the form of an array, to form magnetic field-enhanced region in setting position.For example, magnetic field-enhanced region is located at the side of magnetizing
To the side of the permanent magnet perpendicular to direction of vibration.For example, halbach magnets are one group of magnet.Direction of vibration is vertical side
To the opposite two sides of the permanent magnet then to magnetize in the level of this group of magnet form magnetic field-enhanced region.Coil 16 is one, and
Positioned at the side of halbach magnets；Either coil 16 is two, and is located at the two sides of halbach magnets.
In one example, as in Figure 2-4, the halbach magnets 10 are at least two groups.For example, it may be 2 groups,
3 groups, 4 groups etc..Every group of halbach magnets are arranged along direction of vibration.Gap is formed between the halbach magnets of two adjacent groups
24.A coil 16 is provided in each gap 24.When coil 16 is multiple, the driving force of driving assembly is bigger.It is described
Gap 24 is the magnetic field-enhanced region of the halbach magnets 10, and the coil 16 is located in the gap 24, the cabling
Region passes through the magnetic field that the halbach magnets 10 generate.In embodiment as shown in Figure 3,4 be along paper inwards
With the form of outside cabling.The halbach magnets 10 can generate magnetic field, above-mentioned first routing region 16a and the second cabling
Region 16b at least one will pass through the halbach magnets 10 generate magnetic field.In this way, when being passed through alternation in coil 16
Current signal after, Ampere force can be generated between coil 16 and halbach magnets 10.The routing region of energization passes through magnetic field,
Ampere force can be generated.It is located in the gap 24 of the formation of halbach magnets 10 due to coil 16, halbach magnets 10
At least part magnetic field of generation can pass through coil 16 to be parallel to the direction on the surface of screen 20, and then it is vertical to generate direction
Ampere force in the surface of the screen 20.
Since coil 16 and halbach magnets 10 are separately positioned on fixing piece and screen 20, and be passed through in coil 16
Current signal is the signal of alternation, therefore the direction of generated Ampere force is also alternately inverted variation.Ampere force can lead to
Component of overdriving is directly delivered on screen 20.Protective shell 11 is by can directly drive screen 20 after Ampere force.Above-mentioned ampere
Power can make to generate relative displacement between screen 20 and fixing piece, and then make screen 20 relative to fixing piece vibration sounding.
Vibration-sound generating device provided by the invention compared with the existing technology, on the one hand can directly drive at least office of shell
Portion's (for example, screen 20 or rear cover 22) vibration.
On the other hand, it can preferably protect shell (for example, screen 20 or rear cover 22), reduce the impaired risk of shell.
By taking embodiment shown in Fig. 8 as an example, coil 16 and halbach magnets 10 are respectively arranged on fixing piece and shell, directly right
Shell forms driving, ensure that efficient vibration transmission efficiency.Driving assembly is directly driven with what vibration component was directly connected to
Mode simplifies the principle of driving case vibration, and shell can directly generate vibration after by Ampere force.This design method
Vibration transformation efficiency is effectively increased, drives case vibration without causing resonance by oscillator vibration.This is designed so that outer
The amplitude that shell can be generated and the amplitude that driving assembly can be generated are almost the same, can be according to the performance requirement to shell amplitude
The space of driving assembly is kept in design.Without the oscillation space for the reserved significantly greater than shell peak swing of driving assembly.
On the other hand, halbach magnets form magnetic field-enhanced region, and coil 16 is located at magnetic field-enhanced region.Compared to general
The magnetic density of logical magnet, halbach magnets is high, and magnetic field utilization rate is high, and driving force is big, the Ampere force energy that coil 16 is subject to
Enough more more to balance greatly, the vibration of vibration component is more stable, and more strongly, starting of oscillation speed is faster.
On the other hand, vibration-sound generating device uses split-type design, and setting bullet is not needed between protective shell and fixing piece
The flexibility of piece, installation is higher.
Preferably, it as shown in Fig. 2, magnet described in every group includes three pieces of permanent magnets along direction of vibration arrangement, is calculated as respectively
First permanent magnet 13, the second permanent magnet 14 and third permanent magnet 15.Gap 24 is formed between two groups of magnets.Permanent magnetism positioned at both ends
The magnetizing direction of body is perpendicular to direction of vibration, and magnetizing direction is opposite；Vibration is parallel to positioned at the magnetizing direction of the permanent magnet at middle part
Dynamic direction.Direction when direction of vibration, that is, vibration component vibration.Halbach magnets described in two adjacent groups are located at direction of vibration
Both ends permanent magnet magnetizing direction it is identical, the magnetizing direction positioned at the permanent magnet at middle part is opposite.
For example, as shown in Figure 3-4, positioned at the first permanent magnet 13a of left bank, (one end far from gap 24 is the pole S, between
One end of gap 24 is the pole N) (one end far from gap 24 is the pole N, close to gap 24 with the third permanent magnet 15a positioned at left bank
One end is the pole S) magnetizing direction perpendicular to direction of vibration, and the magnetizing direction of the two is opposite.Positioned at the first permanent magnetism of left bank
The first permanent magnet 13b body 13a (one end far from gap 24 is the pole S, and one end close to gap 24 is the pole N) and be located at right row
(one end far from gap 24 is the pole N, and one end close to gap 24 is the pole S) is corresponding, and the magnetizing direction of the two is identical.Positioned at a left side
Row the second permanent magnet 14a (close to open end 23 one end be the pole S, far from open end 23 one end be the pole N) be located at right row
The second permanent magnet 14b (close to open end 23 one end be the pole N, far from open end 23 one end be the pole S) it is corresponding, the two
Magnetizing direction is parallel to direction of vibration, and magnetizing direction is opposite.Third permanent magnet 15a positioned at left bank is (far from gap 24
One end is the pole N, and one end close to gap 24 is the pole S) (one end far from gap 24 is S with the third permanent magnet 15b positioned at right row
Pole, one end close to gap 24 are the pole N) it is corresponding, the magnetizing direction of the two is perpendicular to direction of vibration, and magnetizing direction phase
Together.
In this example embodiment, the magnetic field strength in the gap 24 formed between two groups of adjacent halbach magnets is maximum.
The driving force of vibration component is maximum, and starting of oscillation speed is fast.
Certainly, every group of the permanent magnet is not limited to 3, can also be more.Every group of halbach magnets are located at two
The magnetizing direction of the permanent magnet at end is perpendicular to direction of vibration, and magnetizing direction is opposite；Positioned at the side of magnetizing of the permanent magnet at middle part
To being parallel to direction of vibration, and the magnetic field of each permanent magnet is mutually in paramagnetism linking, i.e., the pole N of adjacent permanent magnet and S
It is extremely opposite.In this way, the magnetic field strength in gap 24 can be bigger.
Certainly, halbach magnets are not limited to the above embodiments, and those skilled in the art can carry out according to actual needs
Selection.
Preferably, as shown in figure 5, the main direction of halbach magnets 10 is parallel to the long side of coil 16.Main direction
That is the extending direction on the longest side of halbach magnets 10.The long side of coil 16 is the longest side of length of coil 16.It is this
The useful effect region of set-up mode, halbach magnets 10 and coil 16 is maximum, and the Ampere force formed therebetween is maximum.
In other examples, halbach magnets 10 are not limited to above structure, and those skilled in the art can be according to reality
It needs to be configured.
Preferably, as in Figure 2-4, the halbach magnets 10 are at least two groups.In the side with the protective shell
The side in the separate gap 24 of halbach magnets described in adjacent two groups is provided with magnetic conductive board 12.I.e. outermost Liang Zu Haier
The side in the separate gap of Bake magnet is provided with magnetic conductive board 12.Magnetic conductive board 12 is permeability magnetic material, for example, mild steel, SPCC etc..
Magnetic conductive board 12 can gather magnetic induction line, reduce the generation of leakage field, further increase the magnetic field strength in gap 24.
Preferably, as shown in Figure 3-4, the permanent magnet close to the screen 20 of halbach magnets described in two adjacent groups
Magnetic field is formed between (for example, first permanent magnet 13a, 13b), the first routing region 16a passes through the magnetic field；Two adjacent groups institute
It states and forms magnetic field between the permanent magnet (for example, third permanent magnet 15a, 15b) far from the screen 20 of magnet, described second walks
Line region 16b passes through the magnetic field.In this example embodiment, two routing regions are each passed through the magnetic field of different location.This to vibrate
The driving force of component significantly improves.
Preferably, as shown in Figure 2-5, driving assembly further includes lower casing 18.The coil 16 is fixed on the lower casing 18
On, 18 fixing piece of lower casing is fixedly connected, and one end opposite with the lower casing 18 of the protective shell 11 is unlimited.Lower casing
18 can be set according to actual needs biggish connection area, this becomes easy the connection of driving assembly and fixing piece.
Preferably, under conditions of the lower casing 18 is permeability magnetic material, the leakage field that magnetic floats permanent magnet 17 can be reduced.So
And permeability magnetic material and halbach magnets 10 form magnetostatic field force, the two attracts each other.This will lead to screen 20 and fixing piece
It is close to each other.In order to solve the technical problem, driving assembly further includes that magnetic floats permanent magnet 17.The magnetic floats permanent magnet 17 and is set
On the lower casing 18, the magnetic floats permanent magnet 17 and repels each other with the magnet.Magnetic floats permanent magnet 17 and 10 shape of halbach magnets
At repulsion, which can balance magnetostatic field force.
In addition, magnetic, which floats permanent magnet 17, can generate centering damping, transient response is improved.
In addition, magnetic, which floats permanent magnet 17, can play buffer function, the impact force that screen 20 is subject to can be buffered, to prevent
Screen 20 is damaged by the Ampere force of frequent changes.
Certainly, no matter whether lower casing is permeability magnetic material, and magnetic floats permanent magnet 17 and forms repulsion with halbach magnets, and magnetic is floating forever
Magnet 17 can generate centering damping, prevent halbach magnets vibration offset, and improve transient response.It is powering off
Afterwards, halbach magnets can stop rapidly vibrating in the case where magnetic floats the repulsion effect of permanent magnet 17.
On the other hand, magnetic floats permanent magnet 17 and plays buffer function, the impact force that buffering screen 20 is subject to, to prevent screen
20 are damaged by the Ampere force of frequent changes.
Preferably, the middle part of the lower casing 18 forms bulge-structure 19.Bulge-structure 19 is strip projected parts or dotted convex
It rises.The coil 16 is fixed on the bulge-structure 19.For example, coil 16 is fixed on bulge-structure 19 by binder
On.Magnetic floats at least side that permanent magnet 17 is located at the bulge-structure 19, and in this embodiment, the magnetic floats permanent magnet 17 and includes
Two groups of magnet, two groups of magnet are separately fixed at the two sides of the bulge-structure 19.For example, every group of magnet can only include one block of magnetic
Iron is also possible to muti-piece magnet.The halbach magnets 10 are two groups, and are oppositely arranged respectively with two groups of magnet.At this
In example, magnetic floats the magnetizing direction of permanent magnet 17 perpendicular to direction of vibration, and the side of magnetizing with the permanent magnet close to lower casing 18
To identical, to form repulsion.For example, as shown in figure 4, being located at the magnetizing direction of the third permanent magnet 15a of left bank and being located at left side
Magnetic float permanent magnet 17 magnetizing direction it is identical, to form repulsion.Positioned at right row third permanent magnet 15b magnetizing direction with
The magnetizing direction that magnetic positioned at right side floats permanent magnet 17 is identical, to form repulsion.Bulge-structure 19 makes coil 16 and magnetic floating
The positioning of permanent magnet 17 is more acurrate.The overall volume that the magnetic of split settings floats permanent magnet 17 is smaller, for magnetic field in gap 24
Interfere smaller.
It is also possible that as shown in figure 3, the lower casing 18 is laminated structure.The magnetic floats permanent magnet 17 and is structure as a whole.Example
Such as, it is whole laminated structure that magnetic, which floats permanent magnet 17, and magnetizing direction is perpendicular to direction of vibration.The magnetic floats permanent magnet 17 and is set
It sets on the lower casing 18.It is fixed on lower casing 18 for example, magnetic floats permanent magnet 17 by the modes such as bonding, being clamped.The line
Circle 16 is arranged on the magnetic and floats on permanent magnet 17.It is floated on permanent magnet 17 for example, coil 16 is bonded in magnetic by binder.Magnetic is floating
The magnetism at the both ends perpendicular to direction of vibration of permanent magnet 17 is most strong, and the magnetism at both ends is close with corresponding halbach magnets 10
The magnetism of respective end is identical, to form repulsion.For example, as shown in figure 4, being located at the separate gap of the third permanent magnet 15a in left side
24 one end are the pole N, and the left end that magnetic floats permanent magnet 17 is the pole N, to form repulsion.Positioned at right side third permanent magnet 15b it is remote
Sowing discord 24 one end of gap is the pole S, and the right end that magnetic floats permanent magnet 17 is the pole S, to form repulsion.The magnetic of integral structure floats permanent magnet 17
It is easily installed.
Certainly, the set-up mode that magnetic floats permanent magnet 17 is not limited to the above embodiments, and those skilled in the art can be according to reality
Border needs to be configured.
The present invention also provides a kind of electronic products.Electronic product can be, but not limited to, mobile phone, laptop, electricity
Sub- wrist-watch, tablet computer, intercom etc..
As Figure 7-8, which includes vibration-sound generating device provided by the invention and product main body.The screen
Curtain 20 is arranged in the product main body, the display screen as electronic product.The screen 20 can be with the rotatable company in one end
It connects in product main body, the form setting that the other end can move freely；Alternatively, can also be using with favorable elasticity deformability
Material be made screen 20, screen 20 is fixedly connected on the component of other fixations with one end, the other end is can move freely
Form setting.In this way, the screen 20 can generate vibration relative to product main body.A part of structure of the product main body can
Using as the fixing piece, the driving component is then arranged in the product main body.For example, the protective shell 11 and Haier shellfish
On the screen 20, the coil 16 is then fixed at is equivalent to one of fixing piece to the fixed setting of gram magnet 10 in product main body
On component.The Ampere force generated by driving assembly, can drive 20 vibration sounding of screen.Electronic product provided by the invention because
Using vibration-sound generating device provided by the invention, therefore occupied on the thickness direction for being parallel to screen 20 of electronic product
Space is less, is more advantageous to and the thinner of design of electronic products is met to the lightening design requirement of electronic product.
Preferably, the fixing piece can be the structures such as center 21, PCB, the side wall in product main body.In product main body
In, in order to dispose other electronic devices, product main body is often configured with the structure members such as partition, center 21.Center 21 with
The opposite side of screen is provided with rear cover 22.These structure members have good structural stability, a side in electronic product
Face is used for case electronic device, on the other hand for protecting electronic device.Therefore, using this kind of structural member in product main body as
The fixing piece can be improved the conversion ratio that Ampere force is converted to vibration, improve vibration reliability.The side wall of product main body it is interior
Surface can also be used as the fixing piece.
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 (13)
1. a kind of vibration-sound generating device, which is characterized in that including shell, fixing piece and driving assembly；
At least part of the shell is configured to vibrate relative to the fixing piece；
The driving component includes at least one coil and halbach magnets, and the coil is fixedly connected with the fixing piece,
The halbach magnets are fixedly connected with the shell or the halbach magnets are fixedly connected with the fixing piece,
The coil is fixedly connected with the shell；
Plane where the coil is vertical with the part for vibration of the shell, and the coil is located at the Halbach magnetic
The side of body, for the annular end face of the coil towards the halbach magnets, the coil passes through the halbach magnets
Magnetic field-enhanced region.
2. vibration-sound generating device according to claim 1, which is characterized in that the halbach magnets are at least two groups,
Gap is formed between two groups of adjacent halbach magnets, the coil is located in the gap.
3. vibration-sound generating device according to claim 2, which is characterized in that halbach magnets described in every group include along vibration
Three pieces of permanent magnets of dynamic direction arrangement, positioned at both ends permanent magnet magnetizing direction perpendicular to direction of vibration, and magnetizing direction phase
Instead, the magnetizing direction positioned at the permanent magnet at middle part is parallel to direction of vibration；Halbach magnets described in two adjacent groups are located at vibration
The magnetizing direction of the permanent magnet at the both ends in dynamic direction is identical, and the magnetizing direction positioned at the permanent magnet at middle part is opposite.
4. vibration-sound generating device according to claim 2, which is characterized in that the driving component further includes protective shell, institute
It states halbach magnets and is fixedly connected by protective shell with the part for vibration of the shell.
5. vibration-sound generating device according to claim 4, which is characterized in that the protective shell includes side and by described
The open end that side surrounds, the coil protrude into the protective shell from the open end, at two groups adjacent with the side
The side far from the gap of the halbach magnets is provided with magnetic conductive board.
6. vibration-sound generating device according to claim 3, which is characterized in that the centre of the coil has through-hole, described
Be the routing region of coil around through-hole, the routing region include one section close to the shell for vibration part the
Second routing region of the part for vibration of one routing region and one section far from the shell, first routing region and
The direction of routing of second routing region is parallel to the surface of the part for vibration of the shell；
Halbach magnets described in two adjacent groups form magnetic between the permanent magnet of the part for vibration of the shell
, first routing region passes through the magnetic field；Halbach magnets described in two adjacent groups are used to shake far from the shell
Magnetic field is formed between the permanent magnet of dynamic part, second routing region passes through the magnetic field.
7. vibration-sound generating device according to claim 1, which is characterized in that further include lower casing, the coil is fixed on
On the lower casing, the lower casing is fixedly connected with the fixing piece.
8. vibration-sound generating device according to claim 7, which is characterized in that further include that magnetic floats permanent magnet, the magnetic is floating forever
Magnet is arranged on the lower casing, and the magnetic floats permanent magnet and repels each other with the halbach magnets.
9. vibration-sound generating device according to claim 8, which is characterized in that the middle part of the lower casing forms bulge-structure,
The coil is fixed on the bulge-structure, and the magnetic floats at least side that permanent magnet is set to the bulge-structure, described
Halbach magnets are floated permanent magnet with the magnetic and are oppositely arranged；Or
The lower casing is laminated structure, and the magnetic floats permanent magnet and is arranged on the lower casing, and the coil is arranged on described
Magnetic floats on permanent magnet.
10. vibration-sound generating device according to claim 4, which is characterized in that the protective shell is permeability magnetic material.
11. vibration-sound generating device according to claim 1, which is characterized in that the part for vibration of the shell is
Screen or the rear cover opposite with the screen.
12. a kind of electronic product characterized by comprising
Vibration-sound generating device as described in claim 1-11 is one of any；
Product main body, the fixing piece are a part of structure of the product main body, and the driving component is arranged in the product
In main body.
13. electronic product according to claim 12, which is characterized in that the fixing piece is in the product main body
Frame, PCB or side wall.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330099.4A CN110113696B (en) | 2019-04-23 | 2019-04-23 | Vibration sound production device and electronic product |
| PCT/CN2019/129739 WO2020215785A1 (en) | 2019-04-23 | 2019-12-30 | Vibrating sound production apparatus and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330099.4A CN110113696B (en) | 2019-04-23 | 2019-04-23 | Vibration sound production device and electronic product |
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| CN110113696A true CN110113696A (en) | 2019-08-09 |
| CN110113696B CN110113696B (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910330099.4A Active CN110113696B (en) | 2019-04-23 | 2019-04-23 | Vibration sound production device and electronic product |
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| Country | Link |
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| CN (1) | CN110113696B (en) |
| WO (1) | WO2020215785A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110933566A (en) * | 2019-12-02 | 2020-03-27 | 歌尔股份有限公司 | Vibration sounding device for electronic product and electronic product |
| CN111050252A (en) * | 2019-12-02 | 2020-04-21 | 歌尔股份有限公司 | Vibration sounding device for electronic product and electronic product |
| WO2020215785A1 (en) * | 2019-04-23 | 2020-10-29 | 歌尔股份有限公司 | Vibrating sound production apparatus and electronic product |
| WO2021042877A1 (en) * | 2019-09-06 | 2021-03-11 | 华为技术有限公司 | Mobile terminal |
| WO2021135831A1 (en) * | 2019-12-30 | 2021-07-08 | 歌尔股份有限公司 | Exciter and electronic product |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007300578A (en) * | 2006-05-08 | 2007-11-15 | Goto Denshi Kk | Display device and electronic device |
| US20110235848A1 (en) * | 2008-12-08 | 2011-09-29 | Sumida Corporation | Flat acoustic transducer and method for driving thesame |
| CN105472491A (en) * | 2016-01-04 | 2016-04-06 | 歌尔声学股份有限公司 | Multifunctional device with vibration function and sound production function |
| CN205231985U (en) * | 2015-07-31 | 2016-05-11 | 歌尔声学股份有限公司 | Linear vibration motor |
| US20160219353A1 (en) * | 2015-01-23 | 2016-07-28 | Tectonic Audio Labs | Audio transducer stabilization system and method |
| CN205847579U (en) * | 2016-07-21 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Sound-producing device |
| US20170070132A1 (en) * | 2015-09-07 | 2017-03-09 | AAC Technologies Pte. Ltd. | Linear Vibrator |
| CN106655697A (en) * | 2016-11-30 | 2017-05-10 | 歌尔股份有限公司 | Linear vibration motor |
| CN106958589A (en) * | 2017-04-20 | 2017-07-18 | 北京航空航天大学 | Halbach permanent magnetism passive type axial magnetic suspension bearings with damping action |
| CN109148419A (en) * | 2018-08-01 | 2019-01-04 | 云谷（固安）科技有限公司 | buffer structure, display panel and display device |
| CN109309892A (en) * | 2018-10-16 | 2019-02-05 | 歌尔股份有限公司 | Electromagnetic driver and screen sounding device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5978210B2 (en) * | 2011-07-21 | 2016-08-24 | 株式会社シーエンジ | How to install a self-resonant sounding speaker |
| CN109068244B (en) * | 2018-07-17 | 2020-03-17 | 歌尔股份有限公司 | Electromagnetic exciter and screen sounding device |
| CN209267624U (en) * | 2018-12-21 | 2019-08-16 | 歌尔股份有限公司 | Screen vibration-sound generating device and electronic product |
| CN109842701B (en) * | 2018-12-24 | 2023-11-17 | 歌尔股份有限公司 | Screen vibration sounding device and electronic product |
| CN109617356B (en) * | 2019-02-12 | 2024-01-23 | 共达电声股份有限公司 | Linear exciter |
| CN110113696B (en) * | 2019-04-23 | 2020-10-09 | 歌尔股份有限公司 | Vibration sound production device and electronic product |
| CN110049416B (en) * | 2019-04-23 | 2021-02-19 | 歌尔股份有限公司 | Vibration sound production device and electronic product |
-
2019
- 2019-04-23 CN CN201910330099.4A patent/CN110113696B/en active Active
- 2019-12-30 WO PCT/CN2019/129739 patent/WO2020215785A1/en active Application Filing
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007300578A (en) * | 2006-05-08 | 2007-11-15 | Goto Denshi Kk | Display device and electronic device |
| US20110235848A1 (en) * | 2008-12-08 | 2011-09-29 | Sumida Corporation | Flat acoustic transducer and method for driving thesame |
| US20160219353A1 (en) * | 2015-01-23 | 2016-07-28 | Tectonic Audio Labs | Audio transducer stabilization system and method |
| CN205231985U (en) * | 2015-07-31 | 2016-05-11 | 歌尔声学股份有限公司 | Linear vibration motor |
| US20170070132A1 (en) * | 2015-09-07 | 2017-03-09 | AAC Technologies Pte. Ltd. | Linear Vibrator |
| CN105472491A (en) * | 2016-01-04 | 2016-04-06 | 歌尔声学股份有限公司 | Multifunctional device with vibration function and sound production function |
| CN205847579U (en) * | 2016-07-21 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Sound-producing device |
| CN106655697A (en) * | 2016-11-30 | 2017-05-10 | 歌尔股份有限公司 | Linear vibration motor |
| CN106958589A (en) * | 2017-04-20 | 2017-07-18 | 北京航空航天大学 | Halbach permanent magnetism passive type axial magnetic suspension bearings with damping action |
| CN109148419A (en) * | 2018-08-01 | 2019-01-04 | 云谷（固安）科技有限公司 | buffer structure, display panel and display device |
| CN109309892A (en) * | 2018-10-16 | 2019-02-05 | 歌尔股份有限公司 | Electromagnetic driver and screen sounding device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215785A1 (en) * | 2019-04-23 | 2020-10-29 | 歌尔股份有限公司 | Vibrating sound production apparatus and electronic product |
| WO2021042877A1 (en) * | 2019-09-06 | 2021-03-11 | 华为技术有限公司 | Mobile terminal |
| CN110933566A (en) * | 2019-12-02 | 2020-03-27 | 歌尔股份有限公司 | Vibration sounding device for electronic product and electronic product |
| CN111050252A (en) * | 2019-12-02 | 2020-04-21 | 歌尔股份有限公司 | Vibration sounding device for electronic product and electronic product |
| WO2021109559A1 (en) * | 2019-12-02 | 2021-06-10 | 歌尔股份有限公司 | Vibration sound production device for electronic product, and electronic product |
| WO2021109560A1 (en) * | 2019-12-02 | 2021-06-10 | 歌尔股份有限公司 | Vibration sound production device for electronic product, and electronic product |
| CN110933566B (en) * | 2019-12-02 | 2022-03-18 | 歌尔股份有限公司 | Vibration sounding device for electronic product and electronic product |
| WO2021135831A1 (en) * | 2019-12-30 | 2021-07-08 | 歌尔股份有限公司 | Exciter and electronic product |
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| Publication number | Publication date |
|---|---|
| CN110113696B (en) | 2020-10-09 |
| WO2020215785A1 (en) | 2020-10-29 |
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