CN109040917A - Driver and screen sounding device - Google Patents
Driver and screen sounding device Download PDFInfo
- Publication number
- CN109040917A CN109040917A CN201810710136.XA CN201810710136A CN109040917A CN 109040917 A CN109040917 A CN 109040917A CN 201810710136 A CN201810710136 A CN 201810710136A CN 109040917 A CN109040917 A CN 109040917A
- Authority
- CN
- China
- Prior art keywords
- shell
- support portion
- permanent magnet
- magnetic conduction
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a kind of driver and screen sounding devices.The driver includes: shell, vibrator component and stator module, the inside of shell forms accommodating chamber, vibrator component includes vibration section and elastic portion, vibration section is suspended in accommodating chamber by elastic portion, vibration section includes the first permanent magnet for being parallel to direction of vibration and magnetizing, and the first permanent magnet forms middle part avoiding space；Stator module includes magnetic conduction core and the coil for being wound around magnetic conduction core outside, magnetic conduction core is fixed in accommodating chamber, magnetic conduction core includes the radially protruding portion of support portion with one end that support portion is arranged in, the other end of support portion is connect with shell, coil is wound around outside support portion and between shell and radially protruding portion, and coil is located in the avoiding space of middle part and with vibration section separately.
Description
Technical field
The present invention relates to electroacoustic switch technology fields, more particularly, to a kind of driver and screen sounding device.
Background technique
The electric terminal shielded comprehensively increasingly has been favored by people.In order to improve screen accounting, the front of electric terminal is needed
Carry out non-poreization design, the i.e. cavernous structures such as photographic hole for going out acoustic aperture and camera of cancellation earpiece.In some sounding devices
It in design scheme, is placed on center using piezoelectric device, drives the screen of electric terminal with before by the vibration of piezoelectric device
Shell vibration, to radiate sound.
In other schemes, driver is set on the screen.The vibration of driver drives screen vibration sounding, the driver
The non-porous design of screen may be implemented, be provided simultaneously with good audio experience.
However, the magnetic field utilization efficiency of existing driver is low, product power consumption is high, and increases magnet merely, or simple increasing
More magnet will cause product material cost increase, reduce product competitiveness.
Accordingly, it is desirable to provide a kind of new technical solution, to solve the above technical problems.
Summary of the invention
It is an object of the present invention to provide a kind of new solutions of driver.
According to the first aspect of the invention, a kind of driver is provided.The driver includes: shell, vibrator component and determines
The inside of sub-component, the shell forms accommodating chamber, and the vibrator component includes vibration section and elastic portion, and the vibration section passes through
The elastic portion is suspended in the accommodating chamber, and the vibration section includes the first permanent magnet for being parallel to direction of vibration and magnetizing, institute
It states the first permanent magnet and forms middle part avoiding space；The stator module includes magnetic conduction core and is wound around magnetic conduction core periphery
The coil enclosed, the magnetic conduction core are fixed in the accommodating chamber, and the magnetic conduction core includes support portion and is arranged in the branch
The radially protruding portion of one end of support part, the other end of the support portion are connect with the shell, and the coil is wound around the branch
Outside support part and between the shell and the radially protruding portion, the coil be located in the middle part avoiding space and with
The vibration section is separately.
Optionally, the shell is made by permeability magnetic material, the stator module be configurable for magnetization with it is described
The corresponding shell wall in two ends of coil.
Optionally, magnetic conduction core structure in T shape or cross-shaped structure.
Optionally, the magnetic conduction core is integrally formed.
Optionally, the magnetic conduction core includes ring part and the support portion, and the support portion is inserted into the ring part
Kong Zhong, the ring part protrude from the support portion, to form the radially protruding portion.
Optionally, support portion structure in the form of sheets, by being outwardly protruded in the middle part of a side of the support portion, with shape
At insertion end, the insertion end is inserted into the hole of the ring part.
Optionally, the magnetic conduction core includes I-shaped structure and the support portion, and the I-shaped structure includes two
Side and positioned at the connection side of two middle side edges, an end face of the support portion has groove, the I-shaped knot
The connection checkpost of structure enters in the groove, and two sides protrude from the side of the support portion, to form the radial convex
Portion out.
Optionally, the shell is in rectangular parallelepiped structure, and first permanent magnet is bar magnet, and is two, two
The middle part avoiding space is formed between the bar magnet, the long axis of two bar magnets is parallel to the length of the shell
Side, the coil are in racetrack structure or rectangle structure, and the long side of the coil is parallel to the long side of the shell.
Optionally, the shell includes front housing and rear cover, and the front housing includes bottom and the sidewall portion around bottom setting,
The rear cover lid is closed in one end opposite with the bottom of the sidewall portion；Appointing in the elastic portion and the magnetic conduction core
A fixation anticipate on said bottom, another be fixed on it is described after cover.
Optionally, the elastic portion includes multiple elastic slices, and what multiple elastic slices were located at the vibration section is parallel to vibration
The same side in direction.
Optionally, the vibration section is in rectangular parallelepiped structure, and multiple elastic slices are with identical installation position along the vibration
The long side in portion is set side by side.
Optionally, the elastic portion includes elastic slice, and the elastic slice includes protrusion, the first cantilever, the second cantilever and company
Connect the first connecting portion in the same end of first cantilever and second cantilever, one end of the protrusion and described first
The middle part of interconnecting piece connects, and the protrusion is located at the same side of the first connecting portion with first cantilever.
Optionally, inwardly projecting lug boss, the first connecting portion and the protrusion quilt are formed on the housing
It is fixed on the lug boss.
According to another aspect of the present invention, a kind of screen sounding device is provided.The device includes main part and setting
In the screen ontology of the open end of the main part, the driver provided by the invention is set on the screen ontology.
The feature for having magnetic field utilization rate high, low in energy consumption according to one embodiment of the disclosure, the driver.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the exploded view of driver according to an embodiment of the invention.
Fig. 2 is the cross-sectional view along long axis of driver according to an embodiment of the invention.
Fig. 3 is the exploded view of magnetic conduction core according to an embodiment of the invention.
Fig. 4 is the structural schematic diagram of elastic slice according to an embodiment of the invention.
Fig. 5 is the installation diagram of shell and elastic slice according to an embodiment of the invention.
Fig. 6 is the cross-sectional view along short axle of driver according to an embodiment of the invention.
Fig. 7 is the cross-sectional view along short axle of another driver according to an embodiment of the invention.
Fig. 8 is the cross-sectional view along short axle of another driver according to an embodiment of the invention.
Description of symbols:
11: front housing；12: elastic slice；13: the first cantilevers；14: the second cantilevers；15: first connecting portion；16: protrusion；17: ring
Shape magnetic conductive board；18: mass block；19: the first permanent magnets；20: ring part；21: support portion；22: insertion end；23: coil；24:
FPCB；26: lug boss；30: rear cover；31: the second permanent magnets；32: bottom；33: third permanent magnet；34: the four permanent magnets.
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.
According to one embodiment of present invention, a kind of driver is provided.This includes: shell, vibrator component and stator pack
Part.The inside of shell forms accommodating chamber.Vibrator component and stator module are arranged in accommodating chamber.
Specifically, shell is in rectangular parallelepiped structure.Vibrator component includes vibration section and elastic portion.Vibration section is outstanding by elastic portion
It sets in accommodating chamber.Vibration section is suspended in accommodating chamber by elastic portion.Vibration section includes for being parallel to direction of vibration and magnetizing
One permanent magnet 19.First permanent magnet 19 forms middle part avoiding space.Middle part avoiding space avoids stator module.Direction of vibration is such as
In Fig. 6 shown in A arrow.Vibration section has the quality of setting, to form vibration sense.Elastic portion is for providing elastic-restoring force.Elasticity
Portion is spring, elastic slice 12 or elastic rubber etc..
Vibration section includes counterweight part and the first permanent magnet 19.First permanent magnet 19 is arranged on counterweight part, and forms middle part
Avoiding space.For example, counterweight part is mass block 18.Mass block 18 is in frame structure.Middle part avoiding space is used for 23 shape of coil
At evacuation.The magnetizing direction of first permanent magnet 19 is parallel to direction of vibration.Direction when direction of vibration, that is, vibrator component vibration.Example
Such as, the rectangular structure of the first permanent magnet 19 or racetrack cyclic structure are kept away in the middle part of the middle part of the first permanent magnet 19 is formed
Allow space.
Alternatively, the first permanent magnet 19 is multiple.Multiple first permanent magnets 19 are arranged on counterweight part, and are centered around framework knot
The inside of structure, to form middle part avoiding space.The magnetizing direction of multiple first permanent magnets 19 is parallel to direction of vibration, and polarity phase
Together.For example, the middle part of mass block 18 forms through-hole.Two the first permanent magnets 19 are arranged in through-holes, and two the first permanent magnetism
Body 19 is spaced apart from each other, to form middle part avoiding space.The quantity of this setup, the first permanent magnet 19 is few, and structure is simple.
For example, the first permanent magnet 19 is bar magnet.The long axis of two bar magnets is parallel to the long side of shell.Long axis is flat
Row is in the long side of bar magnet.Short axle is vertical with long axis and direction of vibration.Coil 23 is in racetrack structure or rectangular configuration.
The long side of coil 23 is parallel to the long side of shell.In this example embodiment, the long side of coil 23 is corresponding with bar magnet, this to shake
The driving force of sub-component is bigger.
In other examples, the first permanent magnet 19 is four.Four the first permanent magnets 19 are fixed in through-holes, and are arranged in
Rectangular ring structure.The middle part of rectangular ring structure forms middle part avoiding space.The magnetic field strength that this setup is formed is more
It is high.
Stator module includes magnetic conduction core and the coil 23 for being wound around magnetic conduction core outside.Magnetic conduction core is by permeability magnetic material
It is made, for example, the materials such as iron, cobalt, nickel.Magnetic conduction core can gather magnetic induction line, to improve the formation of the first permanent magnet 19
Magnetic field magnetic induction.Magnetic conduction core is fixed in accommodating chamber.
Magnetic conduction core includes the radially protruding portion 16 of support portion 21 with one end that support portion 21 is arranged in.Support portion 21 it is another
The connection of the inner wall of one end and shell.Coil 23 is wound around outside support portion 21 and between shell and radially protruding portion 16.Line
Circle 23 is located in the middle part avoiding space and with vibration section separately.For example, be axially parallel to direction of vibration, then it is radial vertical
In direction of vibration.For example, radially protruding portion 16 is close to the pole N of the first permanent magnet 19.As shown in fig. 6, radially protruding portion 16 reduces
The distance between magnetic conduction core and the first permanent magnet 19, enable magnetic induction line to be more effectively gathered and threaded through coil 23.
Preferably, magnetic conduction core structure in T shape or cross-shaped structure.This structure is convenient for the winding of coil 23 and is consolidated
It is fixed.
Further, magnetic conduction core is integrally formed.For example, magnetic conduction core passes through the side such as casting, punching press by mild steel
Formula is made, this makes the structural strength of magnetic conduction core high, good tolerance.
As shown in fig. 6, the magnetizing direction of the first permanent magnet 19 is parallel to direction of vibration, such as upper end is the pole N, lower end S
Pole.In this way, magnetic induction line is issued by the pole N, the pole S is reached via radially protruding portion 16, central part and coil 23.The left half of coil 23
Magnetic loop, i.e. the first magnetic circuit are respectively formed with right half.According to Ampere's law, peace that the left half and right half of coil 23 are subject to
The direction for training power is identical.Since radially protruding portion 16 is close to the first permanent magnet 19, therefore it can effectively gather magnetic induction line, to improve
Magnetic field strength and magnetic field utilization rate, reduce the power consumption of driver.
In addition, this mode does not need to increase the quality of the first permanent magnet 19, the cost of manufacture of driver is reduced.
In one example, as shown in figure 3, magnetic conduction core includes ring part 20 and support portion 21.21 insertion ring of support portion
In the hole in shape portion 20.Ring part 20 protrudes from support portion 21, to form radially protruding portion 16.Ring part 20 and support portion 21 it is whole
Body constitutes T-shaped structure or cross-shaped structure.
In split type set-up mode, ring part 20 and support portion 21 are simple structural member, this makes magnetic conduction core
The difficulty of processing in portion is low, high production efficiency, and yields is high.
Preferably, as shown in figure 3, the structure in the form of sheets of support portion 21, by the middle part convex of a side of support portion 21
Out, to form insertion end 22.Insertion end 22 is inserted into the hole of ring part 20.For example, the entirety of support portion 21 is in convex shape structure.
The insertion end 22 of support portion 21 forms step structure, can effectively support ring part 20.
In addition, this structure makes the positioning of ring part 20 more accurate, the length of support portion 21 is fixed, convenient for coil 23
Winding.
In one example, magnetic conduction core includes I-shaped structure and support portion 21.I-shaped structure includes two sides
With the connection side for being located at two middle side edges.One end face of support portion 21 has groove.Support portion 21 is in character cut in bas-relief in terms of side
Shape structure.The connection checkpost of I-shaped structure enters in groove.Two sides protrude from the side of support portion 21, to form radial convex
Portion 16 out.I-shaped structure and support portion 21 constitute T-shaped structure or cross-shaped structure.
Similarly, I-shaped structure and support portion 21 are simple structural member, this makes the difficulty of processing of magnetic conduction core
It is low, high production efficiency, yields height.Support portion 21 can form effective twelve Earthly Branches support to I-shape construction.
In addition, this structure is again such that the positioning of ring part 20 is more accurate, the length of support portion 21 is fixed, and is convenient for coil
23 winding.
In one example, shell is made by permeability magnetic material.Stator module is configurable for magnetization and coil 23
The corresponding shell wall in two ends.For example, permeability magnetic material can be, but not limited to, the materials such as iron, cobalt, nickel or containing upper
State the alloy material of element.The magnetizing direction of first permanent magnet 19 is parallel to direction of vibration, then the two poles of the earth of the first permanent magnet 19 with
The shell wall formation of opposite shell attracts each other.The attraction is between the magnetic pole and opposite shell wall of the first permanent magnet 19
The reduction of distance and increase.The attraction can be improved the driving force of vibrator component, increases amplitude, improves the vibration sense of driver.
For example, as shown in Figure 1, shell includes front housing 11 and rear cover 30.Front housing 11 includes bottom 32 and sets around bottom 32
The sidewall portion set.The lid of rear cover 30 is closed in one end opposite with bottom 32 of sidewall portion.For example, by bonding, clamping, riveting, swashing
Rear cover 30 is fixedly connected by the modes such as photocoagulation with sidewall portion.Any one in elastic portion and magnetic conduction core is fixed on bottom 32
On, another is fixed on rear cover 30.For example, being fixed by modes such as bonding, clamping, riveting, laser weldings.Certainly,
Shell is not limited to rectangular parallelepiped structure.
In this way, stator module and front housing 11 or rear cover 30 formed one, vibrator component and front housing 11 and after
Another in lid 30 forms one.When being assembled, rear cover 30 need to be only installed to the sidewall portion of front housing 11, it is same with this
When, stator module is inserted into the middle part avoiding space of vibrator component.This becomes easy the assembling of driver.
For example, as shown in Figs. 1-2, stator module is fixed on rear cover 30, is provided with FPCB24 on rear cover 30.FPCB24
It is connect with the leading-out terminal of coil 23 and lead-in wire terminal.Coil 23 receives the electric signal of external equipment by FPCB24.Vibrator component is solid
It is scheduled on front housing 11.
In one example, as shown in figure 4, the elastic slice 12 for driver includes a plurality of cantilever and first connecting portion 15.
The same end of a plurality of cantilever is connect with first connecting portion 15.For example, first connecting portion 15 and cantilever structure in the form of sheets.First connects
Socket part 15 be used for the inner wall of shell perhaps vibration section connect cantilever the other end and shell inside or vibration section connection,
So that vibration section is suspended in accommodation space.For example, the other end of a plurality of cantilever is respectively welded on vibration section.
In this example embodiment, elastic slice 12 further includes the first protrusion for protruding from the side of the through-thickness of first connecting portion 15
Portion 16.First protrusion 16 increases the area of first connecting portion 15, so that connection or and the vibration section of elastic slice 12 and shell
Connection area increase.For example, first connecting portion 15 to be welded to the quality of on shell or vibration section by welding
On block 18.In this way, elastic slice 12 and the connection of shell or vibration section are stronger.
Optionally, the first protrusion 16 can be generally aligned in the same plane with first connecting portion 15, Different Plane or in any
Angle, as long as convenient for being connect with shell or vibration section.
Preferably, a plurality of cantilever is parallel to each other.For example, a plurality of cantilever along first connecting portion 15 upwards inclination extend or
Person's cantilever is arc-shaped.The set-up mode being parallel to each other, the stretching of a plurality of cantilever of mobile phone, contracting direction are identical, so that vibration
The stress in portion is more balanced, and transverse shifting will not occur.
For example, the first protrusion 16 is between two adjacent cantilevers.This setup makes the first protrusion 16
The space other than 12 enclosing regions of elastic slice will not be occupied, is interfered to avoid being formed to other component.
For example, the first protrusion 16 and a plurality of cantilever are located at the same side or the first protrusion 16 of first connecting portion 15
It is disposed opposite to each other with a plurality of cantilever.Those skilled in the art may set according to actual needs, if not with other component shape
At interference.
In one example, cantilever is two.That is the first cantilever 13 and the second cantilever 14.First protrusion 16 is located at two
Between cantilever.Two cantilevers are symmetrical arranged relative to the first protrusion 16.The structure of the elastic slice 12 is simple, and processing and fabricating is easy.
In addition, symmetrically arranged two cantilevers make the elastic force of elastic slice 12 more balanced.
In one example, as shown in figure 4, elastic slice 12 further includes second connecting portion.The other end of a plurality of cantilever and second
Interconnecting piece connection.First connecting portion 15 and second connecting portion are located at two ends of a plurality of cantilever.For example, first connecting portion
15 with the inner wall of shell for connecting, then second connecting portion is easier elastic slice 12 and the connection of vibration section, it is only necessary to primary
Welding.And when not set second connecting portion, need to weld on every cantilever.
Preferably, elastic slice 12 further includes the second protrusion 16 for protruding from the side of the through-thickness of second connecting portion.
Similarly, the second protrusion 16 increases the area of second connecting portion so that the connection of elastic slice 12 and shell or with vibration section
Connection area increases, and improves the bonding strength of elastic slice 12.
Preferably, first connecting portion 15 and first connecting portion 15 are parallel to each other, multiple cantilevers and first connecting portion 15
Angle in obtuse angle or acute angle.For example, first connecting portion 15 and second connecting portion structure in the form of sheets, and be located at along vibration
In the Different Plane in direction, so that every cantilever forms difference in height.This mode can effectively improve the elastic force of elastic slice 12.
Those skilled in the art can be set according to actual needs the distance between first connecting portion 15 and second connecting portion.
Preferably, elastic slice 12 is integrally formed.For example, metal sheet is integrally formed out by stamping forming mode
Any one elastic slice 12 is stated, this becomes easy the processing of elastic slice 12, and the structural strength of elastic slice 12 is higher.
In one example, elastic slice 12 is multiple.Multiple elastic slices 12 be arranged on vibration section along the same of direction of vibration
Side.For example, multiple elastic slices 12 are located at the side with the separate FPCB24 of vibration section.It is being vibrated compared to by the setting of multiple elastic slices 12
The two sides in portion, this mode can save installation space, to reduce the height of driver.
In one example, as shown in figure 5, multiple elastic slices 12 are set side by side with identical installation position.Identical installation
Orientation be the angle during installation of finger playing piece 12, setting position towards identical.For example, vibration section is in rectangular parallelepiped structure.Vibration
The short transverse in portion is parallel to direction of vibration.The long side of vibration section is parallel to the long side of shell.Elastic slice 12 only includes the first connection
Portion 15 and two cantilevers.One end opposite with first connecting portion 15 of two cantilevers forms open end.During installation, multiple elastic slices
12 longitudinal direction along vibration section is set side by side.Multiple first connecting portions 15 are connect with shell, and open end is towards same
Direction, for example, towards the same short side of vibration section.This setup makes the impulse stroke of every elastic slice 12 identical, thus
So that the elastic force of multiple elastic slices 12 is identical, the stress of vibration section is more balanced.
In one example, elastic slice 12 is multiple.Multiple elastic slices 12 be respectively set at vibration section along direction of vibration
It is not ipsilateral.For example, the elastic slice 12 of identical quantity is located at the upper and lower side along direction of vibration of vibration section, and it is located at upside
Multiple elastic slices 12 position be located at downside multiple elastic slices 12 position correspond.This makes the edge vibration side of vibration section
To two sides stress it is more balanced, the stability of vibration of driver is excellent.
In one example, as shown in figure 5, forming inwardly projecting lug boss 26 on shell.15 He of first connecting portion
First protrusion 16 is fixed on lug boss 26.It is inwardly projecting to be directed to accommodating chamber protrusion.For example, the side that shell passes through punching press
Formula forms lug boss 26.First connecting portion 15 and the first protrusion 16 are welded on lug boss 26.In this way, it increases
The space that elastic slice 12 vibrates.When elastic slice 12 is compressed, gap is formed between the position other than the lug boss 26 of cantilever and shell,
Shell is hit so as to be effectively prevented elastic slice 12.
Those skilled in the art can be set according to actual needs the height of lug boss 26.
In one example, vibrator component further includes auxiliary permanent magnet.Auxiliary permanent magnet is arranged on the first permanent magnet 19
The outside perpendicular to direction of vibration.Auxiliary permanent magnet is configurable for enhancing the intensity across the magnetic field of coil 23.
In one example, as shown in fig. 7, auxiliary permanent magnet includes the second permanent magnet 31.Second permanent magnet 31 magnetizes
Direction is vertical with direction of vibration.Second permanent magnet 31 is configured to be formed together the second magnetic circuit with shell and magnetic conductive core column again, to draw
The magnetic induction line for leading 19 outside of the first permanent magnet passes through coil 23.Outside is the side far from middle part avoiding space.For example, when first
When permanent magnet 19 is annular magnet, the second permanent magnet 31 is also annular magnet, and is set in outside the first permanent magnet 19, for example, square
Shape is cyclic annular or racetrack is cyclic annular.
For example, the second permanent magnet 31 is also multiple bar magnets, and is set when the first permanent magnet 19 is multiple bar magnets
It sets in the outside of the first permanent magnet 19, for example, four bar magnets surround rectangular ring structure.
Second permanent magnet 31 can shorten the magnetic loop in 19 outside of the first permanent magnet, and form the second magnetic circuit.For example, second
Permanent magnet 31 is the pole S close to the side of the first permanent magnet 19.Then the magnetic induction line of first permanent magnet 19 reaches from the pole N
The pole S of two permanent magnets 31, then from the pole N of the second permanent magnet 31, magnetic conductive core column is reached via shell, then by magnetic conductive core column
Side is pierced by, and the pole S of the first permanent magnet 19 is reached after coil 23.By the way that the second permanent magnet 31 is arranged, avoided away from middle part
The magnetic field energy in space is guided to cause magnetic conductive core column, and passes through coil 23.In this way, the second magnetic circuit can effectively increase across coil
The amount of 23 magnetic induction line improves the magnetic induction at coil 23, improves the magnetic field force that coil 23 is subject to.This makes driver
Driving force can effectively increase, sensitivity is higher.
In addition, identical electric current, the vibration sense of driver can be stronger, this makes the more efficient of driver, and energy consumption is lower.
Certainly, the direction of the magnetic pole of the first permanent magnet 19 and the second permanent magnet 31 is not limited to the above embodiments, this field skill
Art personnel can be configured according to actual needs.
In one example, as shown in figure 8, auxiliary permanent magnet includes third permanent magnet 33 and the 4th permanent magnet 34.Third
The main direction of permanent magnet 33 and the 4th permanent magnet 34 is stacked perpendicular to direction of vibration.Main direction, that is, principal plane
Extending direction.The N of third permanent magnet 33 is extremely close to the pole N of the first permanent magnet 19, and the S of the 4th permanent magnet 34 is extremely close to the first permanent magnetism
The pole S of body 19.For example, third permanent magnet 33 and the 4th permanent magnet 34 are also annular when the first permanent magnet 19 is annular magnet
Magnet, and be set in outside the first permanent magnet 19, for example, rectangular ring or racetrack are cyclic annular.
For example, third permanent magnet 33 and the 4th permanent magnet 34 are also more when the first permanent magnet 19 is multiple bar magnets
A bar magnet, and the outside of the first permanent magnet 19 is set, for example, four bar magnets surround rectangular ring structure.
The pole N of third permanent magnet 33 and the pole N of the first permanent magnet 19 are mutually repelled.The pole S of 4th permanent magnet 34 and first is forever
Mutually repel the pole N of magnet 19.Third permanent magnet 33 and the 4th permanent magnet 34 make the more magnetic induction lines of the first permanent magnet 19 from middle part
Avoiding space passes through, that is, enhances the magnetic induction of the first magnetic circuit, i.e., more magnetic induction lines can pass through coil 23, to increase
Magnetic induction at coil 23.In this way, the magnetic field force that coil 23 is subject to is bigger, so that the driving force of driver is bigger, it is sensitive
Du Genggao.
In addition, identical electric current, the vibration sense of driver can be stronger, this makes the more efficient of driver, and energy consumption is lower.
In other examples, the first permanent magnet 19 includes four bar magnets.Four bar magnets form rectangular ring.It is auxiliary
Help being located on longer first permanent magnet 19 of length for permanent magnet.For example, auxiliary permanent magnet is bar magnet.
Alternatively, the first permanent magnet 19 is rectangular ring magnet or track type ringshaped magnet.Auxiliary permanent magnet is located at first
In the long side of permanent magnet 19.For example, auxiliary permanent magnet is bar magnet.
In this example embodiment, auxiliary permanent magnet equally can be improved the driving force of driver, and can save raw material.
In one example, as shown in Fig. 1,2 or 7, vibrator component further includes annular magnetic conductive board 17.Annular 17 quilt of magnetic conductive board
It is arranged on the upper surface along direction of vibration of the first permanent magnet.The upper surface i.e. end opposite with FPCB24 of the first permanent magnet 19
Face.Annular magnetic conductive board 17 has permeability magnetic material to be made.Annular magnetic conductive board 17 can effectively gather magnetic induction line, thus further
Improve the magnetic induction in the avoiding space of middle part.
In addition, in this example embodiment, elastic slice 12 is welded on annular magnetic conductive board 17.
According to another embodiment of the invention, a kind of screen sounding device is provided.The screen sounding device includes master
The screen ontology in body portion and the open end that main part is arranged in, is provided with driver provided by the invention on screen ontology.
The screen sounding device has the characteristics that sounding effect is good.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (14)
1. a kind of driver characterized by comprising shell, vibrator component and stator module, the inside of the shell, which is formed, to hold
Receive chamber, the vibrator component includes vibration section and elastic portion, and the vibration section is suspended at the accommodating chamber by the elastic portion
Interior, the vibration section includes the first permanent magnet for being parallel to direction of vibration and magnetizing, and it is empty that first permanent magnet forms middle part evacuation
Between；
The stator module includes magnetic conduction core and the coil for being wound around magnetic conduction core outside, and the magnetic conduction core is fixed
In the accommodating chamber, the magnetic conduction core includes the radially protruding portion of support portion with one end that the support portion is arranged in, institute
The other end for stating support portion is connect with the shell, and the coil is wound around outside the support portion and is located at the shell and institute
It states between radially protruding portion, the coil is located in the middle part avoiding space and with the vibration section separately.
2. driver according to claim 1, which is characterized in that the shell is made by permeability magnetic material, described fixed
Sub-component is configurable for magnetization shell wall corresponding with two ends of the coil.
3. driver according to claim 1, it is characterised in that, magnetic conduction core structure in T shape or cross
Structure.
4. driver according to claim 3, it is characterised in that, the magnetic conduction core is integrally formed.
5. driver according to claim 3, it is characterised in that, the magnetic conduction core includes ring part and the support
Portion, the support portion are inserted into the hole of the ring part, and the ring part protrudes from the support portion, to form the radial convex
Portion out.
6. driver according to claim 5, which is characterized in that support portion structure in the form of sheets, by the support portion
A side in the middle part of outwardly protrude, to form insertion end, the insertion end is inserted into the hole of the ring part.
7. driver according to claim 3, it is characterised in that, the magnetic conduction core includes I-shaped structure and the branch
Support part, the I-shaped structure include two sides and positioned at the connection side of two middle side edges, and the one of the support portion
A end face has groove, and the connection checkpost of the I-shaped structure enters in the groove, and two sides protrude from the branch
The side of support part, to form the radially protruding portion.
8. driver according to claim 1, which is characterized in that the shell is in rectangular parallelepiped structure, first permanent magnetism
Body is bar magnet, and is two, forms the middle part avoiding space, two bar shapeds between two bar magnets
The long axis of magnet is parallel to the long side of the shell, and the coil is in racetrack structure or rectangle structure, the coil
Long side is parallel to the long side of the shell.
9. driver according to claim 1, which is characterized in that the shell includes front housing and rear cover, the front housing packet
Bottom and the sidewall portion around bottom setting are included, the rear cover lid is closed in one end opposite with the bottom of the sidewall portion；
Any one fixation in the elastic portion and the magnetic conduction core on said bottom, another be fixed on it is described after cover.
10. driver according to claim 1, which is characterized in that the elastic portion includes multiple elastic slices, multiple bullets
Piece is located at the same side for being parallel to direction of vibration of the vibration section.
11. driver according to claim 10, which is characterized in that the vibration section is in rectangular parallelepiped structure, multiple described
Long side of the elastic slice with identical installation position along the vibration section is set side by side.
12. driver according to claim 1, which is characterized in that the elastic portion includes elastic slice, and the elastic slice includes convex
Out portion, the first cantilever, the second cantilever and be connected to first cantilever and second cantilever the same end first connection
Portion, one end of the protrusion are connect with the middle part of the first connecting portion, and the protrusion and first cantilever are located at institute
State the same side of first connecting portion.
13. driver according to claim 12, it is characterised in that, inwardly projecting protrusion is formed on the housing
Portion, the first connecting portion and the protrusion are fixed on the lug boss.
14. a kind of screen sounding device, which is characterized in that the screen including main part He the open end that the main part is arranged in
Ontology is arranged on the screen ontology just like driver described in any one in claim 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710136.XA CN109040917B (en) | 2018-07-02 | 2018-07-02 | Exciter and screen sounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810710136.XA CN109040917B (en) | 2018-07-02 | 2018-07-02 | Exciter and screen sounding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109040917A true CN109040917A (en) | 2018-12-18 |
| CN109040917B CN109040917B (en) | 2021-10-08 |
Family
ID=65521297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810710136.XA Active CN109040917B (en) | 2018-07-02 | 2018-07-02 | Exciter and screen sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109040917B (en) |
Cited By (12)
| 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 |
| CN110138031A (en) * | 2019-05-14 | 2019-08-16 | 歌尔股份有限公司 | A kind of wireless charger and electronic product module |
| CN110177322A (en) * | 2019-05-15 | 2019-08-27 | 瑞声光电科技(常州)有限公司 | Screen sounding driver and electronic equipment |
| CN111010013A (en) * | 2019-12-10 | 2020-04-14 | Oppo广东移动通信有限公司 | Vibrator and screen sound production equipment |
| CN111131576A (en) * | 2019-12-19 | 2020-05-08 | 歌尔股份有限公司 | Vibration sounding device for electronic product and electronic product |
| WO2020228344A1 (en) * | 2019-05-14 | 2020-11-19 | 歌尔股份有限公司 | Exciter and electronic device |
| WO2020248208A1 (en) * | 2019-06-12 | 2020-12-17 | 瑞声声学科技(深圳)有限公司 | Screen sound-production device |
| WO2020248303A1 (en) * | 2019-06-12 | 2020-12-17 | 瑞声声学科技(深圳)有限公司 | Screen sound generating device |
| WO2021000208A1 (en) * | 2019-07-01 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Sound-generating component and electronic device |
| CN114554357A (en) * | 2019-02-28 | 2022-05-27 | 乐金显示有限公司 | Electronic device |
| CN114979909A (en) * | 2022-05-31 | 2022-08-30 | 歌尔股份有限公司 | Drive excitation device and electronic apparatus |
| CN115334422A (en) * | 2022-09-13 | 2022-11-11 | 歌尔股份有限公司 | Exciter and electronic device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140040343A (en) * | 2012-09-25 | 2014-04-03 | 엘지이노텍 주식회사 | Voice coil motor |
| CN107317454A (en) * | 2017-08-11 | 2017-11-03 | 歌尔股份有限公司 | Linear vibration motor |
| CN206908498U (en) * | 2017-05-18 | 2018-01-19 | 歌尔股份有限公司 | Electromagnetic driver |
| CN206948165U (en) * | 2017-06-12 | 2018-01-30 | 歌尔股份有限公司 | Electromagnetic driver and electronic equipment |
| CN207490727U (en) * | 2017-10-26 | 2018-06-12 | 池州市弘港科技电子有限公司 | Ultrathin linear vibrator |
-
2018
- 2018-07-02 CN CN201810710136.XA patent/CN109040917B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140040343A (en) * | 2012-09-25 | 2014-04-03 | 엘지이노텍 주식회사 | Voice coil motor |
| CN206908498U (en) * | 2017-05-18 | 2018-01-19 | 歌尔股份有限公司 | Electromagnetic driver |
| CN206948165U (en) * | 2017-06-12 | 2018-01-30 | 歌尔股份有限公司 | Electromagnetic driver and electronic equipment |
| CN107317454A (en) * | 2017-08-11 | 2017-11-03 | 歌尔股份有限公司 | Linear vibration motor |
| CN207490727U (en) * | 2017-10-26 | 2018-06-12 | 池州市弘港科技电子有限公司 | Ultrathin linear vibrator |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842701B (en) * | 2018-12-24 | 2023-11-17 | 歌尔股份有限公司 | Screen vibration sounding device and electronic product |
| CN109842701A (en) * | 2018-12-24 | 2019-06-04 | 歌尔股份有限公司 | Screen vibration-sound generating device and electronic product |
| CN114554357A (en) * | 2019-02-28 | 2022-05-27 | 乐金显示有限公司 | Electronic device |
| CN114554359A (en) * | 2019-02-28 | 2022-05-27 | 乐金显示有限公司 | Electronic device |
| CN110138031A (en) * | 2019-05-14 | 2019-08-16 | 歌尔股份有限公司 | A kind of wireless charger and electronic product module |
| WO2020228344A1 (en) * | 2019-05-14 | 2020-11-19 | 歌尔股份有限公司 | Exciter and electronic device |
| CN110177322A (en) * | 2019-05-15 | 2019-08-27 | 瑞声光电科技(常州)有限公司 | Screen sounding driver and electronic equipment |
| WO2020248208A1 (en) * | 2019-06-12 | 2020-12-17 | 瑞声声学科技(深圳)有限公司 | Screen sound-production device |
| WO2020248303A1 (en) * | 2019-06-12 | 2020-12-17 | 瑞声声学科技(深圳)有限公司 | Screen sound generating device |
| WO2021000208A1 (en) * | 2019-07-01 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Sound-generating component and electronic device |
| CN111010013A (en) * | 2019-12-10 | 2020-04-14 | Oppo广东移动通信有限公司 | Vibrator and screen sound production equipment |
| CN111010013B (en) * | 2019-12-10 | 2021-12-14 | Oppo广东移动通信有限公司 | Vibrator and screen sound production equipment |
| CN111131576A (en) * | 2019-12-19 | 2020-05-08 | 歌尔股份有限公司 | Vibration sounding device for electronic product and electronic product |
| CN114979909B (en) * | 2022-05-31 | 2023-04-25 | 歌尔股份有限公司 | Driving excitation device and electronic apparatus |
| CN114979909A (en) * | 2022-05-31 | 2022-08-30 | 歌尔股份有限公司 | Drive excitation device and electronic apparatus |
| CN115334422A (en) * | 2022-09-13 | 2022-11-11 | 歌尔股份有限公司 | Exciter and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109040917B (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109040917A (en) | Driver and screen sounding device | |
| CN109040916A (en) | For the vibrator component of driver, driver and screen sounding device | |
| CN108966093A (en) | For the elastic slice of driver, driver and screen sounding device | |
| CN106658309B (en) | Vibration-sound generating device | |
| KR101373427B1 (en) | Diaphragm Direct-Driving Electromagnet Speaker | |
| CN101888581B (en) | Multifunctional micro speaker | |
| EP2268060A1 (en) | Multifunctional speaker | |
| EP1928208B1 (en) | Speaker and electronic equipment utilizing the same | |
| CN109068244A (en) | Electromagnetic driver and screen sounding device | |
| KR101471061B1 (en) | Speaker | |
| KR20100133889A (en) | Speaker | |
| US8873792B2 (en) | Speaker | |
| WO2018058808A1 (en) | Linear vibration motor, and electronic device | |
| KR101587477B1 (en) | Ultra-thin type speaker | |
| CN115119115B (en) | Sound generating device and electronic equipment | |
| CN109429153B (en) | Coaxial double-voice coil driving assembly | |
| KR20230098143A (en) | Flat speaker driven by a single permanent magnet and one or more voice coils | |
| KR101125241B1 (en) | Dynamic speaker | |
| JP2003032786A (en) | Rectangular speaker | |
| CN215580850U (en) | Linear vibration motor | |
| KR20090028877A (en) | Electrodynamic electroacoustic transducer | |
| CN101401453B (en) | Speaker and electronic equipment utilizing the same | |
| KR101460431B1 (en) | Electroacoustic transducer having electromagnetic damper | |
| JP4450088B2 (en) | Speaker using voice coil assembly and manufacturing method thereof | |
| KR101375978B1 (en) | High Efficient Electromagnet Slim Speaker Using Closed-Loop Magnetic Circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |