CN209267625U - Screen vibration-sound generating device and electronic product - Google Patents
Screen vibration-sound generating device and electronic product Download PDFInfo
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- CN209267625U CN209267625U CN201822192894.5U CN201822192894U CN209267625U CN 209267625 U CN209267625 U CN 209267625U CN 201822192894 U CN201822192894 U CN 201822192894U CN 209267625 U CN209267625 U CN 209267625U
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Abstract
The utility model discloses a kind of screen vibration-sound generating device and electronic products.The screen vibration-sound generating device, comprising: vibration component, vibration component include screen and fixing piece, and screen is configured to vibrate relative to fixing piece；Driving assembly; driving assembly includes at least one coil, at least one piece of magnet, protective shell and elastic slice; coil is fixedly connected with one of screen or fixing piece; magnet is fixed in protective shell; one not be fixedly connected with coil in protective shell and screen and fixing piece is fixedly connected, and elastic slice is connected between the vibration component that protective shell and coil are fixed on；Coil is in vertical posture relative to screen; protective shell has port; coil protrudes into protective shell from port; magnet is located at the side of coil; routing region passes through the magnetic field that magnet generates; coil is configured to be passed through the current signal of alternation, and the routing region of energization passes through the magnetic field that magnet generates, the Ampere force on the surface of direction normal to screen is generated between coil and magnet；Vibration component by the alternation transmitted by driving assembly Ampere force so that screen relative to fixing piece vibration sounding, elastic slice be configured as between the vibration component that protective shell and coil are fixed on provide buffering and reset response power.
Description
Technical field
The utility model technical field of electronic products, and in particular, to a kind of screen 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 F of dynamic balancex0=KSx0.After the coil of its electromagnet 02 is powered, the magnetic field between two magnet is disturbed, therefore electricity
Active force between magnet 02 and magnet 03 is broken balance, such as: due to the magnetic field in the same direction of intensifying current suction, two
Magnet has a trend close to each other, while screen has a resistance in reversed a restoring force and motion process
Buddhist nun's power, 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.Moreover, mutually being adsorbed between magnet, the action direction of active force that repels is by line
The influence of the pole orientation of the axis direction and magnet of circle, even if the minor shifts of magnetic pole will also result in the work that two magnet are subject to
It is firmly not perpendicular to the direction of screen, and then screen is made to be easy to damage in vibration.
Utility model content
One purpose of the utility model is to provide a kind of new solution of screen vibration sounding.
It is according to the present utility model in a first aspect, providing a kind of screen vibration-sound generating device, comprising:
Vibration component, the vibration component include screen and fixing piece, and the screen is configured to relative to described solid
Determine part vibration；
Driving assembly, the driving component include at least one coil, at least one piece of magnet, protective shell and elastic slice, institute
The centre for stating coil has through-hole, is the routing region of coil, the coil and the screen or fixing piece around the through-hole
One of be fixedly connected, the magnet is fixed in the protective shell, in the protective shell and the screen and fixing piece
One not be fixedly connected with coil is fixedly connected, and the elastic slice is connected to the vibration group that the protective shell and coil are fixed on
Between part；
The coil is in vertical posture relative to the screen, and the protective shell has port, and the coil is from described
Port protrudes into the protective shell, and the magnet is located at the side of the coil, and the annular end face of the coil is towards the magnetic
Body, the routing region pass through the magnetic field that the magnet generates, and the coil is configured to be passed through the current signal of alternation, lead to
The routing region of electricity passes through the magnetic field that the magnet generates, and direction is generated between the coil and magnet perpendicular to the screen
The Ampere force on the surface of curtain；
The current signal for the alternation being passed through in the coil makes the alternately inverted variation in the direction of the Ampere force, the vibration
Component by the alternation transmitted by the driving component Ampere force so that the screen relative to the fixing piece vibration sounding,
The elastic slice is configured as providing buffering and reset response power between the vibration component that the protective shell and coil are fixed on.
Optionally, the driving component is configured to correspond to coil two pieces of magnets of setting, two pieces of magnets
It is located at the position for being located at the port two sides in the protective shell, the coil is located between two pieces of magnets, described
Two annular end faces of coil are respectively facing two magnets, form magnetic field between two pieces of magnets.
Optionally, the pole orientation of one of magnet are as follows: N is extremely close to the screen, and S is extremely far from the screen；
The pole orientation of another piece of magnet are as follows: N is extremely far from the screen, and S is extremely close to the screen；
The routing region includes one section of the close to the first routing region of the screen and one section far from the screen
The direction of routing of two routing regions, first routing region and the second routing region is parallel to the surface of the screen；
Magnetic field is formed between the magnetic pole of the close screen of two pieces of magnets, first routing region passes through the magnetic
?；Magnetic field is formed between the magnetic pole far from the screen of two pieces of magnets, second routing region passes through the magnetic field.
Optionally, the magnet uses halbach magnets, and the side close to the coil of the magnet corresponds to Haier
The magnetic field-enhanced side of Bake magnet.
Optionally, the elastic slice includes fixed plate and at least two cantilevers, the fixed plate are fixed on the vibration component
One of component on, the cantilever is stretched out from the fixed plate, the cantilever far from the fixed plate one end connect
It connects on the outer surface of the protective shell.
Optionally, the fixed plate is attached on the inner surface of the screen, and four Zhi Suoshu are extended in the fixed plate
Cantilever, the end of four cantilevers be connected to the fixed plate towards on the surface of the screen.
Optionally, the driving component includes wiring board, the wiring board be attached to the fixed plate departing from described
On the surface of screen, the coil be arranged on the wiring board and with the circuit board electrical connection.
Optionally, the protective shell is connected on the fixing piece, and opening, the protective shell are offered on the fixing piece
It is placed in the opening, bracket is fixedly connected on the side wall of the protective shell, the bracket extends to institute from the opening
The surface facing away or facing towards the screen of fixing piece is stated, the bracket is fixedly connected with the fixing piece.
Another aspect according to the present utility model additionally provides a kind of electronic product, comprising:
Above-mentioned screen vibration-sound generating device；
Product main body, the screen are arranged in the product main body, and the fixing piece is one of the product main body
Separation structure, the driving component are arranged in the product main body.
Optionally, the fixing piece is the center or side wall in the product main body.
According to one embodiment of the disclosure, the impaired risk of screen can reduce.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature 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 embodiments of the present invention, and
And together with its explanation for explaining the principles of the present invention.
Fig. 1 is a kind of side cross sectional views of screen vocal skill scheme in the prior art；
Fig. 2 is the explosive view of the driving assembly of screen vibration-sound generating device provided by the utility model；
Fig. 3 is a kind of side cross sectional views of screen vibration-sound generating device provided by the utility model；
Fig. 4 is the side cross sectional views of another screen vibration-sound generating device provided by the utility model；
Fig. 5 is the side cross sectional views of another screen vibration-sound generating device provided by the utility model；
Fig. 6 is the side cross sectional views of another screen vibration-sound generating device provided by the utility model.
Specific embodiment
The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should also be noted that unless another
It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel 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 utility model provides a kind of screen vibration-sound generating device, which includes vibration component and driving group
Part.As shown in Figure 2,3, the vibration component includes screen 11 and fixing piece 12, and the screen 11 is configured to relative to institute
State the vibration of fixing piece 12.The fixing piece 12 can be a certain fixation member in electronic equipment applied by the sounding device,
It is also possible to the part of fixation being separately configured.The driving component then include at least one coil 21, at least one piece of magnet 22,
Protective shell 23 and elastic slice 24.The coil 21 is by conducting wire coiling structure in a closed ring shape in one direction, the coil 21
Center there is through-hole, be the routing region of coil 21 around the through-hole.The routing region refers in coil 21
The region that lead is actually passed through, entire routing region are annular in shape.Coil 21 is fixed on one of screen 11 or fixing piece 12
On, the magnet 22 is then fixed in the protective shell 23.Protective shell 23 is fixed in screen 11 or fixing piece 12 and does not set
It sets on that of coil 21.In embodiment as shown in Figure 2,3, coil 21 forms a fixed connection with screen 11, and protects
Protective case 23 and magnet 22 form a fixed connection with fixing piece 12.In other embodiments, it is also possible to protective shell and screen
It forms a fixed connection, and coil forms a fixed connection with fixing piece.
The elastic slice 24 is then connected to that component for the vibration component that the protective shell 23 is fixed on coil 21
Between.By taking embodiment shown in Fig. 3 as an example, the elastic slice 24 is connected between the screen 11 and the protective shell 23.?
In other embodiment, it is also possible to elastic slice and is connected between fixing piece and protective shell.The elastic slice can be in protective shell and another
Buffer function is provided between the component of one vibration component, the reset after capable of also vibrating for screen provides reset response power.Drop
Low screen is impaired, the non-proper reset of screen risk.
There is axis, in the embodiments of the present invention, the coil 21 in the coil 21 itself of closed circular
Axis is parallel to the surface of the screen 11, as shown in figure 3, the coil 21 is in vertical posture relative to the screen 11.
In the affiliated protective shell 23 that can be protruded into from the port 231 on the protective shell 23 with port 231, the coil 21.
So that the magnet 22 is then located at the side of the coil 21, the annular end face of coil 21 is towards the magnet 22, coil
21 axis and the surface of screen 11 are horizontal attitude.The routing region of the coil 21 includes close to the of the screen
One routing region 211, and the second routing region 212 far from the screen.First routing region 211 and the second cabling
The direction of routing in region 212 is parallel to the surface of the screen, be in embodiment as shown in Figure 3,4 along paper inwards
With the form of outside cabling.The magnet 22 can generate magnetic field, above-mentioned first routing region 211 and the second routing region 212
At least one will pass through the magnetic field that the magnet 22 generates.In this way, after being passed through the current signal of alternation in coil 21, line
Ampere force can be generated between circle 21 and magnet 22.The routing region of energization passes through magnetic field, can generate Ampere force.Due to magnet
22 are arranged in the side of coil 21, therefore a part of magnetic field that generates of magnet 22 can be to be parallel to the direction on the surface of screen 11
Across coil 21, and then direction is generated perpendicular to the Ampere force on the surface of the screen 11.
Since the current signal that coil and magnet are separately positioned on screen and fixing piece, and are passed through in coil is alternation
Signal, therefore the direction of generated Ampere force is also alternately inverted variation.Ampere force can directly be passed by driving assembly
It is delivered on screen.As shown in figure 3, coil 21 is by can directly drive screen 11 after Ampere force.Above-mentioned Ampere force can make screen
Relative displacement is generated between fixing piece, and then makes screen relative to fixing piece vibration sounding.
Screen vibration-sound generating device provided by the utility model compared with the existing technology, on the one hand can directly drive screen
On the other hand vibration can preferably protect screen, reduce the impaired risk of screen.By taking embodiment shown in Fig. 3 as an example, line
Circle 21 and magnet 22 are respectively and directly arranged on screen 11 and fixing piece 12, are directly formed and are driven to screen 11, ensure that efficiently
Vibration transmission efficiency.The direct drive mode that driving assembly and vibration component are directly connected to is simplified into driving screen vibration
Principle, screen can directly generate vibration after by Ampere force.This design method effectively increases vibration transformation efficiency, nothing
Resonance need to be caused by oscillator vibration and drive screen vibration.This design is so that the amplitude and driving assembly that screen can be generated
The amplitude that can be generated is almost the same, and the space for keeping for driving assembly can be designed according to the performance requirement to screen amplitude.
Without the oscillation space for the reserved significantly greater than screen peak swing of driving assembly.On the other hand, elastic slice 24 is connected to protective shell
Between 23 and screen, when magnet 22 and the interaction driving screen 11 of coil 21 vibrate, the elastic slice 24 can generate resistance
Buddhist nun, buffer function, the impact force that buffering screen 1 is subject to, thus the Ampere force damage for preventing screen from frequently being changed.Moreover,
In situation made of the material that screen uses softer, deformability preferably but elastic resilience is relatively poor, the elastic slice energy
It enough is supplied to return active force for screen, initial equilbrium position is returned to after so that screen is completed vibration action every time.In this way, both
The service life that screen can be improved can also be improved the acoustical behavior of sounding device.
Preferably, the driving component is configured to correspond to the form that two pieces of magnets 22 are arranged in a coil 21, such as Fig. 3,4
It is shown.Two pieces of magnets 22 are located at the two sides of the coil 21, the coil along the axis direction of the coil 21
21 are clipped between two pieces of magnets 22, and two annular end faces of the coil 21 are respectively facing two pieces of magnets 22.Two pieces
Magnetic field is formed between the magnet 22, the first routing region 211 and the second routing region 212 of coil 21 can pass through above-mentioned magnetic
, to generate Ampere force between magnet 22 and coil 21.Magnetic field stability, the symmetry, magnetic generated using two pieces of magnets
Field intensity is more preferable, so that the problems such as Ampere force generated between coil and magnet is stronger, the direction of Ampere force is less prone to inclination,
So that the vibrating effect of screen is more stable.Moreover, the magnetic field formed between two pieces of magnets is relative to one by two pieces of magnets of setting
Block magnet is more concentrated in the magnetic field formed close to coil side, magnetic field strength is stronger, the magnetic field of the magnet of effective use generation.
In embodiment as shown in Figure 3,4, coil 21 can be promoted to generate the Ampere force moved up or down
Part is upper and lower two sections of routing regions of coil 21.Therefore, in order to improve magnetic field utilization rate, magnetic field should be made from above-mentioned as far as possible
It is passed through on two sections of routing regions.
As shown in figure 3, preferred implementation magnetic circuit distribution mode when the utility model is provided using two pieces of magnets 22.For
Magnet positioned at left side, N extremely far from the screen 11, the i.e. pole N upward；Its S is extremely close to the screen 11, i.e. S grades of court
Downwards.For be located at right side magnet, N extremely close to the screen 11, the i.e. pole N downward；Its S is extremely far from the screen
Curtain 11, the i.e. pole S are upward.In this collocation form of magnet, the magnetic poles close to the screen 11 of two pieces of magnets 22 it
Between be capable of forming magnetic field, such as extend to from the pole N of bottom right the magnetic field of the pole S of lower-left, first routing region 211 passes through should
Magnetic field.It is capable of forming magnetic field between the magnetic pole far from the screen 11 of two pieces of magnets 22, such as extends to the right side from the pole N of upper left
On the pole S magnetic field, second routing region 212 pass through the magnetic field.In this way, can effectively be generated for vibrating on coil 21
Ampere force two sections of routing regions in both passed through magnetic field, and the direction in magnetic field is basically perpendicular to electric current in coil 21
Direction is converted to the more efficient of Ampere force.Further, across two sections routing region magnetic field it is contrary, on
Current direction in lower two sections of routing regions is also on the contrary, so that the direction phase for the Ampere force that two sections routing region generates
Together, the size of the Ampere force generated between coil and magnet is significantly improved.This design method can significantly improve screen vibration
Dynamic amplitude and sensitivity.
For generating the embodiment of Ampere force, the magnetic pole distribution side of the magnet only with a magnet and fitting coils
To preferably one of close screen of magnetic pole, another magnetic pole is far from screen.In this way, can also make across two sections cabling
The magnetic field in region it is contrary, improve the utilization rate of the routing region of coil, improve the Ampere force of generation.
The embodiment that the magnetic pole of magnet is arranged towards coil is not discharged in the utility model.By the magnetic pole direction of magnet
Coil, and be aligned coil upper and lower ends routing region one of them, also can be generated between coil and magnet it is appropriate
Ampere force so that drive vibration.
For the embodiment shown in Fig. 3,4, screen 11 relative at fixing piece 12 at static position, it is described
Position of first routing region 211 of coil 21 on the direction on the surface of normal to screen 11, it is close with two pieces of magnets 22
The position of the magnetic pole of the screen 11 is corresponding.Correspondingly, the position of the second routing region 212 in this direction, with two blocks of magnetic
The position of the magnetic pole far from the screen 11 of body is corresponding.In this way, above-mentioned two routing region is each passed through two pieces of magnets
The magnetic field for being parallel to screen surface is formed by between two pairs of magnetic poles.
After being passed through current signal in the coil 21, for example, the signal passed first into is in the first routing region 211
Direction be from paper to outside paper, be by paper extroversion paper in the direction in the second routing region 212.This signal side
It is since coil is by conducting wire coiling formation and bring in one direction to feature.At this point, the close screen 11 of two magnets 22
Magnetic field by the right side pole N to the left the pole S propagate, according to the left hand rule of Ampere force, generate downward Ampere force.Two magnets 22
The magnetic field of separate screen 11 propagated by the pole the N pole S to the right in left side, according to the left hand rule of Ampere force, generate downward
Ampere force.Coil 21 pushes directly on screen 11 and moves down after being acted on by Ampere force.
Due to the signal for the alternation being passed through in coil, later, signal reverse transformation, signal is in the first routing region 211
Direction be by paper extroversion paper, the direction in the second routing region 212 be from paper to outside paper.According to ampere
The left and right rule of power, two routing regions generate upward Ampere force.Coil 21 by Ampere force after being acted on, direct pull screen
Curtain moves up.
By above-mentioned principle, driving assembly realizes the effect for directly driving screen vibration.
The utility model provides three kinds of specific types of attachment between protective shell and fixing piece, as in Figure 3-5.Institute
Stating fixing piece 12 can be the plate structure with opening 121.In the embodiment shown in fig. 3, opening 121 supplies the guarantor
Protective case 23 is disposed therein, and the protective shell 23 is fixed on the inner sidewall of the opening 121.The advantages of this design scheme, exists
In the protective shell and magnet are less certainly in screen direction of vibration the space occupied, and the thickness of protective shell and magnet itself has
It is a part of Chong Die with the fixing piece, more meet the lightening design of the electronic products such as mobile phone.
As shown in figure 4, the fixing piece 12 can be the inner surface of the shell of plate structure or electronic product, the protection
Shell 23 is directly anchored on the lower surface of fixing piece 12.Still there is opening 121, the port on the protective shell 23 on fixing piece 12
231 are to penetrate into upper wall from the lower wall of protective shell 23.The coil 21 can be protruded into from the port of the downside of protective shell 23,
And it is stretched out from the port of upside.Further, the sub-fraction structure of coil 21 can extend into the opening 121 of fixing piece 12
Place.The advantages of this design scheme, is that the connection reliability of the protective shell and fixing piece is higher, and magnet is less prone to rolling
The case where moving, loosening, the driving screen for enabling Ampere force more efficient vibrate.Moreover, being opened by being arranged on fixing piece 12
Mouth 121, as far as possible reduction driving assembly the space occupied on the direction of vibration for be parallel to screen.
As shown in figure 5, driving assembly further includes bracket 26, the bracket 26 is described solid for protective shell 24 to be fixed on
Determine on part 12.Opening 121 is offered on the fixing piece, the protective shell 24 is placed in the opening 121.Protective shell 24
Side wall does not use the form on the inner sidewall shown in Fig. 3 for being connected directly between opening 121.Bracket 26 is fixedly connected on the guarantor
On the side wall of protective case 24, bracket 26 from it is described opening 121 in extend to the fixing piece 12 facing away or facing towards the screen 11
Surface on.In embodiment shown in Fig. 5, bracket 26 extends to fixing piece 12 departing from the surface of screen 11, and solid
Fixed connection is on a surface.Protective shell 24 is fixedly connected in opening 121 by bracket 26 as a result,.The advantages of embodiment
Be, on the one hand can reduce protective shell be parallel to screen vibration direction on the space occupied, another aspect protective shell with
The assembly technology of fixing piece can be simplified.There is biggish contact area, and contact surface court between bracket and fixing piece
To or away from screen, it is easier to achieve a fixed connection.For example, by using bonding or it is threadedly coupled, riveting.The difficulty phase being fixedly connected
It is remarkably decreased compared with the side wall of protective shell to be fixedly connected with the side wall of opening.Bracket can also pass through bonding, threaded connection, riveting
The form connect is fixedly connected with protective shell.Optionally, the section of the bracket 26 can be L-shaped.
Preferably, as shown in fig. 6, the magnet 22 uses halbach magnets.Halbach magnets, which have, strengthens it certainly
The magnetic field of body side, the characteristics of weakening its own other side magnetic field.In the embodiments of the present invention, keep magnet 22 close
The side of the coil 21 corresponds to the magnetic field-enhanced side of halbach magnets.The effect in halbach magnets reinforcing magnetic field
Obviously, and in the position close to halbach magnets, magnetic field can be outside to be approximately perpendicular to the direction of 22 side wall of magnet
Radiation.According to the degree that magnetizes of used magnet, it might even be possible to make its magnetic field strength and magnetic field utilization rate is more than in coil two
Side is respectively provided with the embodiment of magnet.Even if halbach magnets only are arranged in the side of coil, it can also make coil and magnet
Between generate stronger Ampere force.It is preferred that all using halbach magnets in the two sides of coil 22 as shown in Figure 6.
The utility model provides a kind of magnetic pole distribution mode of halbach magnets.As shown in fig. 6, the Halbach
Magnet includes three magnet, and three magnet are successively from top to bottom stacked and placed.The wherein magnetic pole of two blocks of magnet of top layer and bottom
Towards the side of halbach magnets, i.e., toward and away from coil 21, positioned at middle layer magnet magnetic pole towards upper and lower two pieces
Magnet.In the side that the magnetic field of side namely halbach magnets close to the coil 21 is reinforced, upper magnet leans near line
The magnetic pole that the magnetic pole and center magnet of circle 21 are close to magnet is like pole, magnetic pole and intermediate magnetic of the lower magnet close to coil 21
The magnetic pole that iron is close to lower magnet is same sex grade.In embodiment as shown in FIG. 6, by taking the magnet in left side as an example, upper magnet is right
Side is the pole N, and the pole N of center magnet is tightly attached on the lower surface of magnet；The right side of lower magnet is the pole S, and the S of center magnet is extremely tight
It is attached on the upper surface of lower magnet.In this way, forming the magnetic field strengthened on the right side of halbach magnets.From the pole the N spoke of upper magnet
Repulsion of the magnetic induction line of injection by the pole N of center magnet, can only concentrate and radiate to the right.Further, the pole S of lower magnet receives
The magnetic induction line projected from the pole N, the repulsion due to the pole S by the pole S of center magnet, magnetic induction line can only hang down from the right side of lower magnet
It is straight, concentrate the pole S for passing lower magnet back.Under the action of this combined magnet, the magnetic induction line on 22 right side of magnet is more concentrated, and
Direction is basically perpendicular to the side wall of magnet 22, namely the routing region perpendicular to coil 21.This embodiment can significantly increase
The Ampere force generated between kicker magnet 22 and coil 21.
Preferably, first routing region and the second routing region at least one be right against halbach magnets
The magnetic pole of magnetic field-enhanced side.The utilization rate in magnetic field is further increased by this design.As shown in fig. 6, the of coil 21
Two routing regions 212 are corresponding at the position of the pole N of upper magnet, the corresponding S in lower magnet in the first routing region 211 of coil 21
At the position of pole.The routing region of coil 21 accurately corresponds at the position of magnetic pole, can be improved the utilization rate in magnetic field.
The utility model provides the embodiment of the preferred structure of the elastic slice.As shown in Fig. 2, the elastic slice 24 can be with
Including fixed plate 241 and at least two cantilevers 242.The fixed plate 241 is fixed on one of component in vibration component,
Cantilever 242 is then stretched out from the fixed plate 241, and cantilever 242 is connected to the protective shell far from the end of the fixed plate 241
On 23 outer surface.In the embodiment shown in fig. 3, the fixed interior table for being covered on the screen 11 of the fixed plate 241
On face.The cantilever 242 is stretched out from the fixed plate 241, is connected up on the lower surface of the protective shell 24.Another
In a kind of embodiment, fixed plate can also be fixed on the fixing piece, and the end of the cantilever is then connected to the interior of screen
On surface, it can equally play buffering, the effect of return action power is provided.
Preferably, as shown in Fig. 2, being extended with four cantilevers in the fixed plate, the end of four cantilevers is all connected with
In the fixed plate towards on the surface of the screen.The supporting force that four cantilevers provide is more balanced, balances, so that screen
Curtain can be by the buffer function of more stable balance.A possibility that further decreasing phenomena such as polarizing.
Optionally, screen driving sounding device may include at least two groups driving assembly.It, can corresponding to one group of vibration component
At least to configure two groups of driving assemblies in the different location of screen, what this embodiment to generate between screen and fixing piece
Ampere force is more balanced, and screen generates vibration under the effect of uniform Ampere force, and stability of vibration is more preferable, screen is hardly damaged, and
And acoustical behavior is more preferable.
Optionally, as shown in Figure 2,3, the driving component further includes wiring board 25.The wiring board 25 and the coil
21 electrical connections, are used for transmission electric signal, so as to be capable of forming Ampere force between coil 21 and magnet 22.The wiring board 25
It is preferred that being arranged in the same parts of the vibration component with coil 21.As shown in Figure 2,3, the wiring board 25 is attached to described
In the fixed plate 241 of elastic slice 24.The coil 21 is also fixedly connected in the fixed plate 241.In other embodiments, institute
Stating wiring board can also be attached on the inner surface of the screen.
The utility model additionally provides a kind of electronic product.The electronic product include above-mentioned screen vibration-sound generating device and
Product main body.The electronic product can be mobile phone or tablet computer etc., and the utility model is limited not to this.The screen
It is arranged in the product main body, the display screen as electronic product.The screen can be rotatably attached to produce with one end
In product main body, the setting of form that the other end can move freely；Alternatively, can also be using the material with favorable elasticity deformability
Screen is made, the form setting that screen is fixedly connected on the component of other fixations with one end, the other end can move freely.This
Sample, the screen can generate vibration relative to product main body.A part of structure of the product main body can be used as described solid
Determine part, the driving component is then arranged in the product main body.For example, the protective shell and magnet are fixed at product master
It is equivalent on body on a component of fixing piece, the coil is then fixedly installed on the screen.Elastic slice is connected to the guarantor
Between protective case and screen.The Ampere force generated by driving assembly, can drive screen vibration sounding.It is provided by the utility model
Electronic product is because using screen vibration-sound generating device provided by the utility model, therefore in the screen that is parallel to of electronic product
The space occupied is less on thickness direction, is more advantageous to the thinner of design of electronic products, meets that electronic product is lightening to be set
Meter demand.
Preferably, the fixing piece can be the structures such as center, side wall in product main body.In product main body, in order to
Other electronic devices are disposed, product main body is often configured with the structure members such as partition, center, these structure members are in electronic product
In there is good structural stability, case electronic device is on the one hand used for, on the other hand for protecting electronic device.Therefore,
Using this kind of structural member in product main body as the fixing piece, the conversion ratio that Ampere force is converted to vibration can be improved, improve
Vibration reliability.The inner surface of the side wall of product main body can also be used as the fixing piece.
Although being described in detail by some specific embodiments of the example to the utility model, this field
It is to be understood by the skilled artisans that example above merely to be illustrated, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments
It modifies.The scope of the utility model is defined by the following claims.
Claims (10)
1. a kind of screen vibration-sound generating device characterized by comprising
Vibration component, the vibration component include screen and fixing piece, and the screen is configured to relative to the fixing piece
Vibration；
Driving assembly, the driving component include at least one coil, at least one piece of magnet, protective shell and elastic slice, the line
The centre of circle has through-hole, is the routing region of coil, the coil and its of the screen or fixing piece around the through-hole
One of be fixedly connected, the magnet is fixed in the protective shell, in the protective shell and the screen and fixing piece not with
Be fixedly connected one of coil is fixedly connected, the elastic slice be connected to vibration component that the protective shell and coil are fixed on it
Between；
The coil is in vertical posture relative to the screen, and the protective shell has port, and the coil is from the port
It protrudes into the protective shell, the magnet is located at the side of the coil, and the annular end face of the coil is towards the magnet, institute
It states routing region and passes through the magnetic field that the magnet generates, the coil is configured to be passed through the current signal of alternation, energization
The routing region passes through the magnetic field that the magnet generates, and direction is generated between the coil and magnet perpendicular to the screen
The Ampere force on surface；
The current signal for the alternation being passed through in the coil makes the alternately inverted variation in the direction of the Ampere force, the vibration component
By the alternation transmitted by the driving component Ampere force so that the screen relative to the fixing piece vibration sounding, it is described
Elastic slice is configured as providing buffering and reset response power between the vibration component that the protective shell and coil are fixed on.
2. screen vibration-sound generating device according to claim 1, which is characterized in that the driving component is configured to correspond to
Two pieces of magnets are arranged in one coil, and two pieces of magnets are located at the position for being located at the port two sides in the protective shell
It sets, the coil is located between two pieces of magnets, and two annular end faces of the coil are respectively facing two magnets, and two
Magnetic field is formed between magnet described in block.
3. screen vibration-sound generating device according to claim 2, which is characterized in that the magnetic pole side of one of magnet
To are as follows: N is extremely close to the screen, and S is extremely far from the screen；
The pole orientation of another piece of magnet are as follows: N is extremely far from the screen, and S is extremely close to the screen；
The routing region includes one section and walks close to the second of the first routing region of the screen and one section of separate screen
The direction of routing of line region, first routing region and the second routing region is parallel to the surface of the screen；
Magnetic field is formed between the magnetic pole of the close screen of two pieces of magnets, first routing region passes through the magnetic field；
Magnetic field is formed between the magnetic pole far from the screen of two pieces of magnets, second routing region passes through the magnetic field.
4. screen vibration-sound generating device according to claim 1, which is characterized in that the magnet uses Halbach magnetic
Body, the side close to the coil of the magnet correspond to the magnetic field-enhanced side of halbach magnets.
5. screen vibration-sound generating device according to claim 1, which is characterized in that the elastic slice includes fixed plate and at least
Two cantilevers, the fixed plate are fixed on one of component of the vibration component, and the cantilever is from the fixed plate
It stretches out, one end far from the fixed plate of the cantilever is connected on the outer surface of the protective shell.
6. screen vibration-sound generating device according to claim 5, which is characterized in that the fixed plate is attached to the screen
Inner surface on, four cantilevers are extended in the fixed plate, the end of four cantilevers is connected to the fixed plate
Towards on the surface of the screen.
7. screen vibration-sound generating device according to claim 5, which is characterized in that the driving component includes wiring board,
The wiring board is attached on the surface departing from the screen of the fixed plate, and the coil is arranged on the wiring board
And with the circuit board electrical connection.
8. screen vibration-sound generating device according to claim 1, which is characterized in that the protective shell is connected to the fixation
On part, opening is offered on the fixing piece, the protective shell is placed in the opening, fixed on the side wall of the protective shell to connect
It is connected to bracket, the bracket extends to the surface facing away or facing towards the screen of the fixing piece from the opening, described
Bracket is fixedly connected with the fixing piece.
9. a kind of electronic product characterized by comprising
Screen vibration-sound generating device described in claim 1-7 is one of any；
Product main body, the screen are arranged in the product main body, and the fixing piece is a part knot of the product main body
Structure, the driving component are arranged in the product main body.
10. electronic product according to claim 9, which is characterized in that the fixing piece be the product main body in
Frame or side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822192894.5U CN209267625U (en) | 2018-12-24 | 2018-12-24 | Screen vibration-sound generating device and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822192894.5U CN209267625U (en) | 2018-12-24 | 2018-12-24 | Screen vibration-sound generating device and electronic product |
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| Publication Number | Publication Date |
|---|---|
| CN209267625U true CN209267625U (en) | 2019-08-16 |
Family
ID=67561453
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822192894.5U Active CN209267625U (en) | 2018-12-24 | 2018-12-24 | Screen vibration-sound generating device and electronic product |
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| Country | Link |
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| CN (1) | CN209267625U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842701A (en) * | 2018-12-24 | 2019-06-04 | 歌尔股份有限公司 | Screen vibration-sound generating device and electronic product |
| 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 |
-
2018
- 2018-12-24 CN CN201822192894.5U patent/CN209267625U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842701A (en) * | 2018-12-24 | 2019-06-04 | 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 |
| 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 |
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