CN108627947A - Lens driver - Google Patents
Lens driver Download PDFInfo
- Publication number
- CN108627947A CN108627947A CN201810666132.6A CN201810666132A CN108627947A CN 108627947 A CN108627947 A CN 108627947A CN 201810666132 A CN201810666132 A CN 201810666132A CN 108627947 A CN108627947 A CN 108627947A
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- China
- Prior art keywords
- lens
- baffle
- pedestal
- shell
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 58
- 230000003287 optical effect Effects 0.000 claims description 32
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000035699 permeability Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 abstract description 6
- 230000001965 increasing effect Effects 0.000 abstract description 5
- 238000010422 painting Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 11
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The present invention relates to a kind of lens drivers comprising a baffle being arranged between shell and pedestal, the lower end of the baffle extend to the lower end of shell and pedestal or less.The flexible circuit board of lens driver is fixed on baffle.Since baffle is stand-alone assembly, can have the rigidity and intensity met the requirements in the case of very thin, can also formulate bending angle according to demand without increasing thickness, therefore the painting glue space of pedestal and design adjustment space increase.First flexible circuit board can be in advance fixed on the predeterminated position of baffle when assembling and then baffle is fixed between shell and pedestal, wiring board positioning and assembling are simpler, carry out positioning line fault plate without by other plastic parts.
Description
Technical field
The present invention relates to a kind of lens drivers.
Background technology
Currently, with the development of science and technology and improvement of living standard, the camera function of mobile phone is more and more, and this is to mobile phone
Camera requirement it is also higher and higher.In existing camera, VCM is widely used in camera（Voice Coil Motor,
Voice coil motor）It realizes automatic focusing function, and is configured with position sensor to realize closed-loop control, clearer figure can be presented
Picture.
Existing closed loop lens drive voice coil motor（Hereinafter referred to as lens driver）Including pedestal and it is fastened on pedestal
On shell.Pedestal and shell form a receiving space, and receiving is used for the lens carrier of loading lens, is fixed on outside lens carrier
The driving coil of side wall is arranged in driving coil peripheral side and is used every empty opposed drive magnet, position detection with driving coil
Magnet, position sensor and the circuit board for controlling driving coil according to the output of position sensor.Circuit board is generally fixed
Inside the shell on side wall, position sensor is fixed on circuit boards, and position detecting magnet is fixed on position sensor opposite
Lens carrier on.Circuit board is generally flexible circuit board（FPC, flexible printed circuit）, lower end is formed with
Input and output terminal, and input and output terminal exceeds the end face that motor is located at optical axis direction rear.In order to fix flexible circuitry
The input and output terminal of plate is held as shown in Figure 1, extending a baffle 71 to optical axis direction rear on pedestal for the lower end of FPC 72
It leans on.And pedestal is generally plastic parts and is made, it is desirable that there is baffle 71 certain thickness just can ensure that intensity is enough.The thickness reduces
Painting glue space between lens driver and camera module（Dotted line and arrow A institutes mark position, are located in generally Fig. 2
Base back surface）, easily lead between lens driving stout man and camera module that be firmly bonded degree inadequate.And in order to ensure FPC with
Substrate has enough scolding tin spaces, therefore FPC can increase the scolding tin sky of FPC and substrate towards one angle of optical axis direction infolding
Between.When FPC infoldings, it is trapezoidal that baffle need to be designed as cross section, causes Weir Plate Thickness further under the premise of ensuring rigidity
The problem of increasing, causing to occupy painting glue space is more serious.
Invention content
The purpose of the present invention is to provide the lens drivers it is not necessary that baffle is arranged on a kind of pedestal.
A kind of lens driver, before driving a lens, definition subject to be located at the optical axis direction of the lens
Side, the lens driver include:Pedestal；Shell, lower end are connected with pedestal, and receiving sky is surrounded together with pedestal
Between；Lens carrier is formed with the through-hole for loading the lens thereon；It is described for the lens carrier suspension to be supported in
Elastic component in shell；For driving lens carrier in receiving space along lens axis direction or along perpendicular to the side of optical axis
To mobile driving unit；And flexible circuit board, it is electrically connected with the driving unit.The lens driver also wraps
A baffle being arranged between shell and pedestal is included, the lower end of the baffle extends to the lower end of shell and pedestal hereinafter, institute
Flexible circuit board is stated to be fixed on the baffle.
As an implementation, the flexible circuit board is towards being fixed with electronics member device in the one side of the lens carrier
Part is formed with clearance position corresponding with the electronic component on the baffle.
As an implementation, the baffle extends to shell lower end at least part below towards lens axis
Direction is bent, the input and output terminal for bearing against flexible circuit board.
As an implementation, the baffle and the ground terminal of flexible circuit board are electrically connected, and the baffle also has
One extends to the pin that shell lower end below one is used as ground terminal.
As an implementation, the driving unit includes：One or more driving coils are fixed on the lens branch
The outer peripheral sidewall of frame；And multiple drive magnets, it fixes on the base, and in the direction of the optical axis perpendicular to the lens
It is upper opposed every sky with one or more of driving coils.Wherein, the pedestal includes：Bottom plate, the center portion thereof are formed with through-hole；
The multiple columns extended vertically from bottom plate；And the multiple limiting sections extended from bottom plate or multiple columns.Its
In, each drive magnet is between the first direction upper limit perpendicular to the optical axis direction is located at two columns, in direction or the back of the body
The direction upper limit from the driving coil opposed with its is located at least one limiting section, to which the multiple limiting section can limit driving
Magnet and the driving coil the distance between opposed with its.
As an implementation, embedded there are two conduct pieces made of mutual disjunct high permeability material for the pedestal.
As an implementation, from the direction of the lens axis, the area ratio of the conduct piece and bottom plate is
20%~50%。
It as an implementation, can be multiple around perpendicular to the lens when quantity of the driving coil is multiple
Optical axis direction winding, also can be on the periphery wall that the optical axis direction of the lens is wound in the lens carrier；It is described
When the quantity of driving coil is one, the optical axis direction around the lens is wound on the periphery wall of the lens carrier；Institute
It states and is also formed at least two wrapping posts on lens carrier periphery wall and is electrically connected the driving coil and elasticity for guiding
The metallic channel of the conducting wire of component；The multiple drive magnet interval setting, at least two wrapping post are disposed therein one
It is not opposite with any drive magnet in interval between drive magnet；It is additionally provided on the periphery wall of the lens carrier
Position sensing magnet or inductor, position sensing magnet or inductor are arranged between another drive magnet
In interval.
As an implementation, the flexible circuit board is fixed on the one side positioned at lens radial outside of the baffle
On.
As an implementation, position corresponding with the baffle is formed with opening on the side wall of outer shell, described to open
The lower edge of mouth perforation side wall of outer shell, the flexible circuit board has and the matched peripheral shape of opening institute
An independent baffle is configured on the shell of the lens driver of the present invention, and flexible circuit board is fixed using the baffle, and
It is integrally born against for flexible circuit board.Since baffle is independent component, thickness is customizable, can accomplish very thin, therefore the painting of pedestal
Glue space and design adjustment space increase.In addition, baffle can formulate bending angle without increasing thickness according to demand.Due to baffle
For stand-alone assembly, first flexible circuit board can be in advance fixed on the predeterminated position of baffle and then baffle is fixed on shell
Between pedestal.The assembling mode of relatively existing flexible circuit board, wiring board positioning and assembling are simpler, without by it
His plastic parts carrys out positioning line fault plate.
Description of the drawings
Fig. 1 is the partial structural diagram of existing lens driver.
Fig. 2 is the partial structural diagram at another visual angle of existing lens driver.
Fig. 3 is the explosive view of the lens driver of one embodiment of the invention.
Fig. 4 is the vertical view of lens carrier in Fig. 3.
Fig. 5 is that coil winds status diagram when using the wrapping post of rotation symmetric design in the prior art.
Fig. 6 is that the lens carrier of one embodiment of the invention and coil wind status diagram.
Specific implementation mode
Below in conjunction with specific embodiment and attached drawing, present invention is further described in detail.
The lens driver of the present invention is preferably VCM（Voice Coil Motor, voice coil motor）Type drive motor is driven
Moving cell includes mutually every empty opposed driving coil and drive magnet.Support member includes the lens branch for loading lens
Frame, the perimeter support member for being set to lens carrier peripheral side and lens carrier suspension is supported in perimeter support member
Elastic component.One of driving coil and drive magnet are fixed on lens carrier, and another one is fixed on peripheral support portion
On part.It in work, is powered to the driving coil in drive magnet magnetic field, lens carrier is pushed using the Lorentz force of generation
Realize the focusing driving function to camera lens.Additionally it can realize closed-loop control by allocation position induction sensor and magnet
Function.
Wherein, the shape of lens carrier can be substantially（Namely substantially or be similar to）It is more for round or rectangular or hexagon etc.
Side shape, corresponding, magnet can be that straight panel shape or arc plate or L-type plate, the shape of perimeter support member are also correspondingly arranged.It drives
Moving winding can be wound around the direction of the optical axis perpendicular to the lens, then be fixed on lens carrier lateral wall, also can be around lens
Optical axis direction be wound on the periphery wall of lens carrier.When driving coil is wound around the direction of the optical axis perpendicular to lens,
General quantity is set as two（It is opposite across lens carrier and be arranged in parallel）, four（It is arranged in rotational symmetry in lens carrier
Outer peripheral sidewall on）Or six, eight etc..When driving coil is wound in around the optical axis direction of lens on the periphery wall of lens carrier
When, general quantity is set as one or two（Front and back setting in the direction of the optical axis）.Multiple drive magnets are spaced with being mutually not attached to
Setting, generally rotational symmetry setting or axial symmetry setting.
Hereinafter, being illustrated by taking the lens driver that shape is substantially square as an example, and the light around lens is set
The drive magnet of the driving coil and two straight panel shapes of axis direction winding.It will be appreciated by those skilled in the art that, member profile
Shape and quantity should not limit the scope of the invention.
Hereinafter, for convenience of description, defining subject and being located at lens driver（Namely lens）Front, then in lens
Close subject side is front side on optical axis direction（Front, it is preceding, on）, after being far from subject side in the direction of the optical axis
Side（Rear, after, under）.It is Z-direction to define the direction parallel with the optical axis of lens, vertical with Z-direction and orthogonal two
A directional spreding is X-direction and Y-direction.
As shown in figure 3, in one embodiment of the invention, lens driver includes mainly pedestal 1, is fastened from 1 front of pedestal
Shell 2 on pedestal 1 and it is arranged in the receiving space that shell 2 and pedestal 1 surround：It is formed with and is used for loading lens
（It is not shown）Through-hole lens carrier 3, around optical axis direction wound on 3 outer peripheral sidewall of lens carrier driving coil 31, set
Set the two blocks of drive magnets 32, the position detecting magnet 33 that is fixed on lens carrier 3 and position in 31 peripheral side of driving coil
Detection is set with the opposed position detection sensor of magnet 33（It is not shown）, fixed position detecting sensor flexible circuit board
6, it embeds（Namely package, it can not be observed from base exterior）Conduct piece 4 in pedestal 1 and for by lens carrier 3
The elastic component 5 that suspension is supported on 2 inside of shell and lens carrier 3 can be made to be moved along optical axis direction.
Wherein, shell 2 is square lid, including rectangular cover board and vertical with cover board three side walls, the 4th side wall
Missing is formed as the substantially U-shaped opening 21 that side wall lower ends portion is formed through on opening 21 or the 4th side wall.Three sides
Wall lower end is connected with pedestal.In the present embodiment, it is located at the side wall of the sides+X as above-mentioned 4th side wall, is formed through thereon
The substantially U-shaped opening 21 in side wall lower ends portion.One baffle 23 closes the opening 21 from 21 inside of opening.The side of closing opening 21
Formula can be：（1）Baffle 23 is fixed on the madial wall of shell 2 and closes opening 21；Or（2）Baffle 23 is fixed on pedestal 1,
The closing of baffle 23 opening 21 when pedestal 1 is connected and fixed with shell 2.In other embodiment, when the 4th side wall missing is formed as out
When mouth 21,23 side of baffle can be fixed on adjacent side wall and cover board or be fixed on pedestal 1, to close opening.
Shell 2 is made of low permeability magnetic material or non-magnet material.Here, defining magnetic conductivity（magnetic
Permeability generally indicates that μ is equal to the ratio between magnetic induction density B and magnetic field intensity H, i.e. μ=B/H in magnetic medium with symbol μ）
It is high permeability material more than or equal to 1.5, magnetic conductivity is low permeability magnetic material less than 1.5.
Baffle 23 is preferably that conductive metal or alloy are made, and is substantially square.Specifically, baffle 23 divides for positioned at optical axis side
The first plate 231 forwards, the second plate 232 integrally extended from 231 lower end of the first plate and under the first plate 231
The pin 233 as ground terminal that end is integrally extended.Its excess-three side of first plate 231 is fixed on housing interior side-wall
（Or first plate 231 be fixed on pedestal 1）So that it closes opening 21, and the second plate 232 and pin 233 extend under shell 2
End is following.The electronic component for being formed with and being fixed on first plate 231 in flexible circuit board 6, especially position detection pass
The corresponding clearance position of sensor 2311 so that position detection sensor can be used with the position detection being fixed on lens carrier 3
Magnet 33 is every empty opposed.Second plate 232 is used to bear against for the input and output terminal 61 for being formed in 6 lower end of flexible circuit board.It is flexible
Wiring board 6 be fixed on baffle 23 in the one side of lens radial outside, lower end is formed with input and output terminal, in addition to lower end
Peripheral shape with formed opening 21 side match.So that in assembling, can flexible circuit board 6 be first fixed on the pre- of baffle 23
If on position, make flexible circuit board is fixed with the one of electronic component facing towards lens carrier, and electronic component passes through through-hole
2311 is opposite with lens carrier, and flexible circuit board is integrally born against including its input and output terminal on baffle 23.It then will gear
Plate 23 is fixed on 21 inside of opening（It is directly anchored on 2 madial wall of shell；Or be directly anchored on pedestal 1, reconnect pedestal 1
With shell 2, baffle 23 is made to be located at 21 inside of opening）, so that the top of flexible circuit board 6 is embedded in opening 21, assembling accurate positioning
It is again simple.Since baffle can have the rigidity and intensity that meet the requirements, the painting glue space of pedestal in the case of very thin
And design adjustment space increases.
According to actual needs, the second plate 232 can slightly be bent with respect to the first plate 231 towards lens axis, be increased and flexibility
The scolding tin space of the substrate of wiring board 6.Since baffle 23 is separate platy, accurate bending angle is easily realized, therefore can be according to need
It asks and formulates bending angle without increasing thickness.
Further, since using the baffle 23 of conductive material, baffle 23 can be used as flexible circuit board 6 and the driving of entire lens
The ground terminal of device.The ground terminal of flexible circuit board 6 is electrically connected with baffle 23.It should be understood that 23 surface of baffle is removed
Outside a part for pin 233 and the part being electrically connected with flexible baffle 23, it is covered with insulating layer.
Pedestal 1 is for fixing drive magnet 32, elastic component 5 and conduct piece 4.Pedestal 1 includes the bottom for being substantially in quadrangle
Plate 11, from the column 12 that the quadrangle of bottom plate 11 extends vertically, the multiple limiting sections 13 extended vertically from bottom plate 11
With one or more support plates 14.The middle part of bottom plate 11 is provided with through-hole, opposite with lens.Column 12 is vertical from the quadrangle of bottom plate 11
Extend.Elastic component 5 is connected on the front end face of column 12.Due to being provided with column 12, when shell 2 is connect with pedestal 1,
12 outer surface of column can be pasted with 2 inner surface of shell, to which the then area of the two significantly increases, lens driver
Overall construction intensity enhances.
In the present embodiment, limiting section 13 extends from the close both sides of bottom plate 11 respectively, is substantially parallel to X in surface
The rectangle tabular in direction.Here, the sides+Y and the sides-Y that limiting section 13 is located at pedestal 1 are defined, and column 12 is with being parallel to the side Y
To side surface 122, a surface for being parallel to X-direction for the side surface 122 and limiting section 13 forms L-shaped position limiting structure.It drives
The both sides of the face of moving magnet 32, the i.e. side end faces+X and the side end faces-X are contacted with the side surface 122 of column 12（Also it can pass through glue simultaneously
Glutinous mode connects）, to which each drive magnet 32 is limited in the Y direction between two columns 12.Drive magnet 32 with
End face on the opposite direction of driving coil 31 is contacted with limiting section 13（It is preferred that being connected by way of gluing simultaneously）, thus
It is limited in limiting section 13 towards the direction of lens.In addition, limiting section 13, which can also limit drive magnet 32, is being parallel to optical axis direction
Position.To be omitted in existing driving device it is fixed inside the shell for limiting drive magnet and the plastic parts of FPC
Holder.
Support plate 14 is integrally extended from bottom plate 11 on the side of the sides+X.In the present embodiment, support plate 14
For fixed baffle 23, that is, the one side of baffle is connected with 2 madial wall of shell, another side is connected with the support plate 14 of pedestal 1.
A part for the outer surface of support plate 14 can also be pasted with 2 inner surface of shell, to the then area of pedestal 1 and shell 2
It significantly increases, the overall construction intensity enhancing of lens driver.In the present embodiment, support plate 14 is substantially square, middle part shape
At there is through-hole, stretched into for the electronic component in flexible circuit board.
In addition, as described above, pedestal 1 is also embedded（Package）There are two conduct pieces made of mutual disjunct high permeability material
4 namely conduct piece 4 be pedestal 1 be wrapped in injection molding in pedestal 1.In the present embodiment, two conduct pieces 4 lean on respectively
Nearly two groups of limiting sections 13 setting, namely it is respectively arranged on the sides+Y and the sides-Y of pedestal 1.Each conduct piece 4 includes perpendicular to optical axis
Second conductive sheet 43 of direction namely Z-direction, two the first conductive sheets integrally extended vertically from the second conductive sheet 43
44.Two the first conductive sheets 44 extend respectively to 14 lower end of support plate, and from 14 lower end of support plate be exposed to it is outer or by one it is curved
Folded structure stretches out support plate 14, and is electrically connected with flexible circuit board 6.
In addition, also extending the 4th conductive sheet 41 of a L-shaped on the second conductive sheet 43 of each conduct piece 4.Namely the 4th lead
Electric piece 41 vertically extends from the second conductive sheet 43 first, then bends and extends towards outside, is formed as L-shaped.And the 4th
Conductive sheet 41 extends at the hole formed on bottom plate 11 so that its part exposes, convenient to be connect with elastic component 5.
Particularly, from the direction of lens axis, the area ratio of conduct piece 4 and bottom plate 11 is 20% ~ 50%, in this way,
When completed knocked down products, upper setting large area magnet can be being assem-bly faced, then pedestal 1 is arranged on magnet and is assembled, in this way, bottom
Seat 1 is stabilized in by larger downward magnetic attraction on jig, be not easy to occur floating because being driven the influence of magnet with it is crooked
The case where, it is convenient for the assembling of product, the movement of pedestal 1 is limited without redesigning compression bar.
Elastic component 5 includes front side reed 51 and rear side reed 52, includes the inside for being connected with lens carrier 3
Portion, the outside portion for being connected with pedestal 1 and the wrist for connecting inside portion and outside portion extended that wriggles.This implementation
In example, the inside of front side reed 51 is formed generally as annular, and is connect with the front end of lens carrier 3, the outside of front side reed 51
Also it is formed generally as annular and is connect with 12 front end face of column, and be buckled in protrusion 121.Rear side reed 52 need to be used as conductive path
Diameter, therefore it is divided into mutual disjunct two panels, every inside portion and the rear end of lens carrier connect, every outside portion and bottom plate
11 four corners connection, and the hole by being formed on bottom plate 11 is electrically connected with corresponding conduct piece 4.
In this way, 3 suspension of lens carrier is supported on 2 inside of shell by elastic component 5, and allow lens carrier 3 along optical axis side
To movement.
As described above, in the present embodiment, lens carrier 3 is substantially square, and driving coil 31 is wrapped in around the optical axis of lens
Every empty opposed in the outer peripheral sidewall of lens carrier 3 and with two drive magnets 32.It please also refer to Fig. 4, the court of lens carrier 3
Be also formed with two wrapping posts 33 on the periphery wall of -X direction, lens carrier slave wrapping post 33 to the installation of driving coil 31
Position and from wrapping post 33 to be also formed on the installation position of rear side reed 52 for guide be electrically connected driving coil and
The metallic channel of the conducting wire of elastic component.Two conducting wires drawn from driving coil 31 will reach wrapping post 33 along metallic channel, then
Around wrapping post 33 rotate it is a few week after along metallic channel reach lens carrier the position being connect with rear side reed 52, and with rear side reed
52 are electrically connected.In the present embodiment, the same side on lens carrier 3, the i.e. sides-X is arranged in two wrapping posts 33, namely is not provided with
The side of drive magnet, while facing away from the other side for being provided with position sensing magnet.In this way, metallic channel need to be only arranged saturating
It is greatly shortened with the same side of wrapping post 33, the length of metallic channel on mirror support 3, to which the design for reducing mold is difficult
Degree, other component increase using space so that trend development of the overall structure towards microminiaturization.Similarly, right on lens carrier
Two blocks of drive magnets 32 should be provided with, when two wrapping posts 33 are arranged when not corresponding to the same side of magnet, driving coil 31
Winding mode is simple, shorter around linear distance, and the design difficulty of metallic channel reduces.When two wrapping posts 33 are arranged at flexible circuitry
When the offside of plate 6 so that the design of wrapping post will not impact the use of circuit board, and wrapping post 33 has more skies
Between so that the design of wrapping post 33 is more reasonable.
In addition, can also overcome the coil of lens carrier both sides caused by the wrapping post for using rotational symmetry in the prior art
Wind the discrepant problem of the number of turns（Please refer to Fig. 5）.Such as Fig. 5, when using the wrapping post of rotational symmetry, driving coil initiating terminal
It is wound since the wrapping post on the upside of Fig. 5, and terminates to wind at the wrapping post of downside in Figure 5, it may appear that be located in Fig. 5
The case where being less than right side around the number of turns of driving coil on the left of lens carrier, causes to generate unbalanced magnetic motive force when driving.
And when wrapping post scheme using the present invention, as shown in fig. 6, lens carrier both sides and drive magnet every empty opposed coil around
The number of turns is essentially equal.
It should be noted that when used driving coil and the quantity of drive magnet increase, the quantity pair of wrapping post
Increase with answering.But no matter wrapping post 33 is arranged three or three or more, and the design position of wrapping post 33, which should still design, to be driven
It is not opposite with any drive magnet in the interval of magnet between any two, and position sensing magnet or inductor setting exist
In interval between another drive magnet.So it can reach effect same as above-described embodiment.
In work, powers, realize to lens for driving coil 31 by flexible circuit board 6, conduct piece and elastic component 5
Driving.Whole device only uses conducting wire when rear side reed is connected with driving coil, the equal built-in and point of remaining conductive path
To spot welding, circuit is more stable, is conducive to the promotion and optimization of performance on camera lens module.
In other embodiment, when bottom plate is other shapes, column 12 symmetrically, is preferably arranged in rotational symmetry the bottom of at
On plate.In other embodiment, limiting section can along the X direction extend from column, and not with contacts baseplate, limiting section
Also it can extend from bottom but not contacted with column.In other embodiment, the quantity of limiting section can be two or four with
On, and shape is not limited to plate, as long as the plane for being parallel to X-direction with one.In addition, column 12 and limiting section 13 also may be used
Think other shapes, with can limit drive magnet 32 translation and the distance between drive magnet 32 and driving coil 31 i.e.
It can.In other embodiment, when being provided with position sensing inductor on the periphery wall of lens carrier, position sensing inductor
It is opposed with circuit board, and position sensing magnet is provided on circuit board.In other embodiment, rear side reed can be divided into it is independent and
Mutually disjunct three or more parts, corresponding, the quantity for being embedded in the high magnetic conduction conduct piece in pedestal is three or three
It is a above or remain as two, it is designed according to different circuit functions, the different piece of rear side reed is led with corresponding high magnetic conduction
Electric part is electrically connected.In other embodiment, when the quantity for the conduct piece being embedded in pedestal is three or three or more, wherein
One or more conduct pieces can be made of low permeability magnetic material or non-magnet material.
In other embodiment, lens driver can be other kinds of lens motor, such as marmem driving
Type lens motor, the driving lens motor of piezoelectric device, above-mentioned shell configures independent sheet metal, and FPC is fixed on sheet metal
On structure be also applied for the driving lens motor of marmem and the driving lens motor of piezoelectric device.
In other embodiment, support plate 14 can be omitted, baffle can be directly anchored on outer casing inner wall.In other embodiment,
Also baffle can be only secured in support plate 14, without being fixedly connected with outer casing inner wall.
In other embodiment, opening 21 can be not provided on shell.
In other embodiment, baffle can also be fixed inside the shell by the way that the fastener on wall inside the shell or on pedestal is arranged
On wall or on pedestal or baffle is only clamped between outer casing inner wall and pedestal.
In other embodiment, shell can be made of high permeability material, and baffle is alternatively nonmetallic materials and is made, and be only used for holding
By flexible circuit board and its input and output foot.
In other embodiment, the conduct piece that pedestal is embedded in can be omitted, Rear resilient component or front side elastic component can be straight
It connects and is electrically connected with flexible circuit board and is driving coil power supply.
Although description of this invention combination embodiments above carries out, those skilled in the art
Member can carry out many replacements according to above-mentioned content, modifications and variations, be obvious.Therefore, it is all it is such substitute,
It improves and variation is included in the spirit and scope of appended claims.
Claims (10)
1. a kind of lens driver, for driving a lens, definition subject to be located in front of the optical axis direction of the lens,
The lens driver includes:
Pedestal；
Shell, lower end are connected with pedestal, and a receiving space is surrounded together with pedestal；
Lens carrier is formed with the through-hole for loading the lens thereon；
Elastic component for being supported in the lens carrier suspension in the shell；
For driving lens carrier in receiving space along lens axis direction or along the driving moved perpendicular to the direction of optical axis
Unit；And
Flexible circuit board is electrically connected with the driving unit；
It is characterized in that, the lens driver further includes a baffle being arranged between shell and pedestal, the baffle
Lower end extends to the lower end of shell and pedestal hereinafter, the flexible circuit board is fixed on the baffle.
2. lens driver according to claim 1, which is characterized in that the flexible circuit board is towards the lens branch
It is fixed with electronic component in the one side of frame, clearance position corresponding with the electronic component is formed on the baffle.
3. lens driver according to claim 2, which is characterized in that the baffle extends to shell lower end or less
At least part towards lens axis direction bend, the input and output terminal for bearing against flexible circuit board.
4. lens driver according to claim 2, which is characterized in that the ground terminal of the baffle and flexible circuit board
It is electrically connected, the baffle also extends to the pin that shell lower end below one is used as ground terminal with one.
5. lens driver according to claim 4, which is characterized in that the driving unit includes：
One or more driving coils are fixed on the outer peripheral sidewall of the lens carrier；And
Multiple drive magnets, it is fixed on the base, and on the direction of the optical axis of the lens with it is one
Or multiple driving coils are every empty opposed；
Wherein, the pedestal includes：
Bottom plate, the center portion thereof are formed with through-hole；
The multiple columns extended vertically from bottom plate；And
The multiple limiting sections extended from bottom plate or multiple columns；
Wherein, each drive magnet is between the first direction upper limit perpendicular to the optical axis direction is located at two columns, in court
It is located at least one limiting section to or away from the direction upper limit of the driving coil opposed with its, to which the multiple limiting section can limit
Drive magnet processed and the driving coil the distance between opposed with its.
6. lens driver according to claim 5, which is characterized in that the pedestal is embedded, and there are two mutually disjunct
Conduct piece made of high permeability material.
7. lens driver according to claim 6, which is characterized in that from the direction of the lens axis, institute
The area ratio for stating conduct piece and bottom plate is 20% ~ 50%.
8. lens driver according to claim 7, which is characterized in that when the quantity of the driving coil is multiple,
It multiple can wind, also can be wound in around the optical axis direction of the lens described around the direction of the optical axis perpendicular to the lens
On the periphery wall of lens carrier；When the quantity of the driving coil is one, institute is wound in around the optical axis direction of the lens
It states on the periphery wall of lens carrier；At least two wrapping posts are also formed on the lens carrier periphery wall and for guiding electrically
Connect the metallic channel of the conducting wire of the driving coil and elastic component；The multiple drive magnet interval setting, described at least two
A wrapping post is disposed therein in the interval between a drive magnet, not opposite with any drive magnet；The lens
Position sensing magnet or inductor are additionally provided on the periphery wall of holder, the position sensing magnet or inductor setting exist
In interval between another drive magnet.
9. lens driver according to claim 1, which is characterized in that the flexible circuit board is fixed on the baffle
In the one side of lens radial outside.
10. lens driver according to claim 1, which is characterized in that on the side wall of outer shell with the baffle pair
The position answered is formed with opening, and the lower edge of the opening perforation side wall of outer shell, the flexible circuit board has to be opened with described
The matched peripheral shape of mouth institute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810666132.6A CN108627947B (en) | 2018-06-26 | 2018-06-26 | Lens driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810666132.6A CN108627947B (en) | 2018-06-26 | 2018-06-26 | Lens driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108627947A true CN108627947A (en) | 2018-10-09 |
| CN108627947B CN108627947B (en) | 2024-01-30 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810666132.6A Active CN108627947B (en) | 2018-06-26 | 2018-06-26 | Lens driving device |
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| CN (1) | CN108627947B (en) |
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| CN109495679A (en) * | 2018-11-30 | 2019-03-19 | 上海信迈电子科技有限公司 | Anti-shaking structure, stabilization system and the photographic device with it |
| CN111323989A (en) * | 2020-03-25 | 2020-06-23 | 新思考电机有限公司 | Lens driving device, camera module and electronic equipment |
| US20210033818A1 (en) * | 2019-08-02 | 2021-02-04 | Tdk Taiwan Corp. | Optical member driving mechanism |
| WO2021047605A1 (en) * | 2019-09-11 | 2021-03-18 | 常州市瑞泰光电有限公司 | Lens module |
| CN113452178A (en) * | 2021-06-28 | 2021-09-28 | 新思考电机有限公司 | Carrier structure, lens driving device, camera device and electronic product |
| CN109495679B (en) * | 2018-11-30 | 2024-10-22 | 上海信迈电子科技有限公司 | Anti-shake structure, anti-shake system and image pickup device with anti-shake system |
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| CN109495679B (en) * | 2018-11-30 | 2024-10-22 | 上海信迈电子科技有限公司 | Anti-shake structure, anti-shake system and image pickup device with anti-shake system |
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| CN108627947B (en) | 2024-01-30 |
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Effective date of registration: 20211217 Address after: Xiangshuihe Industrial Park, Dayawan Economic and Technological Development Zone, Huizhou City, Guangdong Province Applicant after: Huizhou Sazhide Optoelectronics Technology Co.,Ltd. Address before: 516083 4th floor, No.6 workshop, Yongchang electronics company, Xiangshuihe Industrial Park, Daya Bay, Huizhou City, Guangdong Province Applicant before: HUIZHOU DAYA BAY JSS OPTICAL TECHNOLOGY Co.,Ltd. Applicant before: HUIZHOU DAYA BAY EVER BRIGHT ELECTRONICS & INDUSTRIAL Co.,Ltd. Applicant before: JSS OPTICAL TECHNOLOGY Co.,Ltd. |
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