CN106371188A - Lens driving device - Google Patents
Lens driving device Download PDFInfo
- Publication number
- CN106371188A CN106371188A CN201610547330.1A CN201610547330A CN106371188A CN 106371188 A CN106371188 A CN 106371188A CN 201610547330 A CN201610547330 A CN 201610547330A CN 106371188 A CN106371188 A CN 106371188A
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- CN
- China
- Prior art keywords
- leaf spring
- component
- messenger wire
- lens driver
- vibration
- 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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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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
Abstract
The invention provides a lens driving device which can inhibit unnecessary vibration and resonancewith a simple and easy-to-manufacture structure.A suspension wire (411,412,413,414) supports a focus regulation mechanism (27) in a manner of enabling a retaining member (27) to be along a vibration correction direction (X,Y axis direction) which is intersected with the optical axis. The middle portion (85) between the two ends of the suspending wire (411,412,413,414) is in contact with the dampering member (9) for inhibiting the vibration. The dampering member (9) is retained by a retaining portion (33) which is arranged on a contraposition portion (333) of the installation member (33).
Description
Technical field
The present invention relates to a kind of lens driver, the comparison especially relating to being equipped on portable telephone etc. is small-sized
Lens driver used in camera.
Background technology
In recent years, it is equipped on the high-performance of the camera of portable telephone etc., the requirement more and more higher of multifunction, carrying
It is desirable to not only possess focal adjustments function in the lens driver of the portable telephone with camera etc., it is also equipped with shaking
Debugging functions.
Lens driver as described above becomes following structure: will be referred to as the existing of shooting unit (movable module)
Af (auto-focusing) camera model supported by 4 messenger wires, by driving to it on two direction of principal axis orthogonal with the optical axis
Move to revise the shake such as handshaking.
Specifically, the corner of pedestal is fixed in one end of 4 linear messenger wires, and on the upside of other end insertion, leaf spring passes through
Through hole, and be fixed using solder etc..
However, in lens driver as described above, when unnecessary being total to is produced on the direction intersecting with optical axis
When shaking, the action that shake can be revised counteracts.
Between magnet holder and coil substrate, in patent documentation 1, it is configured to suppress the vibration-damped component of unnecessary resonance.
Citation
Patent documentation 1: Japanese Unexamined Patent Publication 2013-44924
However, in structure described in above-mentioned patent documentation 1, vibration-damped component is configured at magnet holder, and (focal adjustments are with thoroughly
Mirror drive division) and coil substrate between, in the structure shown here it is difficult to the gluey vibration-damped component of the coating such as allotter, there is productivity ratio
Relatively low such problem.
Content of the invention
The present invention completes in view of the foregoing, its object is to provide a kind of can be simply and readily to manufacture
Structure is suppressing the lens driver of unnecessary vibration and resonance.
To achieve these goals, the lens driver of the present invention possesses: can keep the lens holders of lenticular body；
Make described lens holders along the focal adjustment mechanism of optical axis direction movement；And make described lens holders and described Jiao
The shake correction mechanism that point governor motion is moved up in the side being intersected with described optical axis direction, described lens driver tool
Have: many messenger wires, described many messenger wires are so that described lens holders can be moved on the direction being intersected with described optical axis direction
Dynamic mode supports to described focal adjustment mechanism；Moving body, described moving body together with described lens holders with
The side that described optical axis direction intersects moves up；And vibration-damped component, described vibration-damped component is set to and described moving body and described messenger wire
This two side contacts.
According to this structure, by the vibration-damped component contacting with messenger wire, the focal adjustment mechanism being supported by this messenger wire can be suppressed
Vibration, therefore, it is possible to avoid resonate, can suitably carry out shake revise.In addition, around messenger wire, lens driver
Member of formation less, therefore, it is possible to readily insure that setting vibration-damped component space.Therefore, manufacturing process becomes simple, thus
It is obtained in that higher productivity ratio.
Preferably, the described messenger wire of the lens driver of the present invention is linear, and described vibration-damped component is set to encirclement and is located at
Pars intermedia between the both ends of described messenger wire.
According to this structure, due to making vibration-damped component contact with the pars intermedia of messenger wire, therefore, it is possible to obtain higher vibration suppression
Effect, and the configuration of vibration-damped component can be simplified.
In addition, vibration-damped component is arranged in the way of the pars intermedia surrounding messenger wire, therefore, it is possible to make the contact that vibration-damped component is with messenger wire
It is difficult to disconnect.
Preferably, the lens driver of the present invention has: base component, and described base component is located at described focal adjustments
The lower section of mechanism, and the bottom of described messenger wire is fixed；Downside leaf spring and upside leaf spring, described downside leaf spring and institute
State upside leaf spring and keep described lens holders in the way of lens holders described in the sandwich from described optical axis direction；With
And installation component, described downside leaf spring and described upside leaf spring fixed by described installation component, and the upper end of described messenger wire is solid
Due to described upside leaf spring.
According to this structure, it is installation component that downside leaf spring and upside leaf spring are fixed on same component, therefore, it is possible to make
Mirror keeper is difficult to respect to inclined light shaft.
Preferably, the described installation component of the lens driver of the present invention has and is formed as polygonal frame-shaped portion and position
In corner and the opposed portion opposed with described messenger wire in described frame-shaped portion, it is provided with the guarantor keeping described vibration-damped component in described opposed portion
Hold portion, described installation component constitutes described moving body.
According to this structure, the opposed portion due to the installation component in the position near messenger wire arranges maintaining part, therefore, it is possible to
Vibration-damped component is stably held in maintaining part.
Preferably, the described opposed portion in the lens driver of the present invention be provided with outside in the way of clipping described messenger wire
Two prominent protuberances of side, described two protuberances constitute described maintaining part.
According to this structure, can stably keep vibration-damped component between two protuberances.Thereby, it is possible to guarantee positioned at two
Messenger wire between protuberance and the contact condition of vibration-damped component.
Preferably, the described base component of the lens driver of the present invention has the hardware being formed with breakthrough part,
The described bottom of described messenger wire is run through and is fixed on the described breakthrough part of described hardware.
According to this structure, the bottom of messenger wire can be stably fixed to base component via hardware, and energy
Enough realization power supplies to focal adjustment mechanism via hardware, messenger wire and upside leaf spring.
Preferably, the lens driver of the present invention possesses the yoke integrated with described installation component, described installation structure
The described opposed portion of part is made up of the leg projecting downwards of the corner portion in described frame-shaped portion, by described upside leaf spring
The lower surface in the fixing described frame-shaped portion of described installation component is provided with first connecting portion, and described first connecting portion runs through on described
The breakthrough part of side plate spring and the breakthrough part of described yoke, thus described upside leaf spring and described yoke are fixed on described installation
Lower surface fixing for described downside leaf spring is provided with second connecting portion in described leg by the described frame-shaped portion of component, and described the
Two juts run through the breakthrough part of described downside leaf spring, thus leaf spring on the downside of this is fixed on described leg.
According to this structure, first connecting portion and second connecting portion are all prominent to identical direction, therefore during fabrication, need not
The direction of reverse installation component, therefore, it is possible to improve productivity ratio.
Preferably, the lens driver of the present invention has: first coil, and it makes described lens holders edge for generation
The electromagnetic force of optical axis direction movement；Magnet, it is located at the outside of described first coil and the position opposed with this first coil, should
Magnet produces magnetic field, produces the light based on electromagnetic interaction between the electric current circulating in this magnetic field and in described first coil
Electromagnetic force on direction of principal axis；And second coil, alive in this second coil midstream, produce with described Magnet in this electric current
The electromagnetic interaction in magnetic field under, produce the electromagnetic force on the direction that intersects with described optical axis direction, described first coil is consolidated
Due to the periphery of described lens holders, and integratedly move with this lens holders, described yoke is with described Magnet integratedly
Mobile.
According to this structure, due to having yoke, so even being also used as focal adjustment mechanism and shake straightener in Magnet
It is also possible to improve the thrust making lens holders movement in the case of structure.
Invention effect
In accordance with the invention it is possible to offer is a kind of and unnecessary vibration is suppressed with the structure simply and readily manufacturing and is total to
The lens driver shaking.
Brief description
Fig. 1 is the stereoscopic figure of the lens driver involved by embodiments of the present invention.
Fig. 2 is the exploded perspective view observed of upper side of the lens driver shown in from Fig. 1.
Fig. 3 is the exploded perspective view observed of lower side of the lens driver shown in from Fig. 1.
Fig. 4 be the housing of the lens driver shown in Fig. 1 is omitted after in the state of axonometric chart.
Fig. 5 be the installation component of the lens driver shown in Fig. 1 and housing are omitted after in the state of axonometric chart.
Fig. 6 is the top view of the upside leaf spring of embodiments of the present invention.
Fig. 7 is the state after omitting the housing of the lens driver involved by embodiments of the present invention for explanation
Under the structure in corner axonometric chart.
Fig. 8 is the side view of messenger wire and vibration-damped component.
Fig. 9 be the vibration-damped component and messenger wire that maintaining part is kept pars intermedia amplify after figure.
Figure 10 is the axonometric chart of the installation component shown in Fig. 1.
Figure 11 is the axonometric chart in the corner observing the installation component shown in Fig. 1 from base component side.
Figure 12 is to save the housing of the lens driver involved by the variation of embodiments of the present invention for explanation
The axonometric chart of the structure in corner in the state of after slightly.
Figure 13 is for illustrating the shell of the lens driver involved by another variation of embodiments of the present invention
The axonometric chart of the structure in corner in the state of after body omission.
Description of reference numerals:
1 ... lens driver
3 ... lenticular bodies
5 ... focal adjustment mechanism
7 ... shake correction mechanisms
8 ... flexible base boards
9 ... vibration-damped components
11 ... base components
13 ... second coils
15 ... hardwares (line keeper)
151 ... breakthrough parts
17 ... downside leaf springs
21 ... first coils
23 ... Magnet
25 ... insulating trips
27 ... lens holders
29 ... upside leaf springs
129 ... first upside leaf springs
229 ... second upside leaf springs
31 ... yokes
311 ... yoke tops
313 ... breakthrough parts
321 ... notch parts
361 ... inner yoke portions
371 ... yoke side surface part
33 ... installation components (top cover)
331 ... frame-shaped portions
331a ... first connecting portion
333 ... opposed portion
333a ... second connecting portion
339,1339,2339 ... maintaining parts
339a, 1339a ... protuberance
35 ... housings
411st, 412,413,414 ... messenger wire
85 ... pars intermedias
462nd, 463 ... Hall elements
Specific embodiment
Hereinafter, the lens driver involved by embodiments of the present invention is illustrated.
Fig. 1 is the stereoscopic figure of the lens driver 1 involved by embodiments of the present invention.Fig. 2 is from shown in Fig. 1
Lens driver 1 the exploded perspective view observed of upper side.Fig. 3 is the lower section of the lens driver 1 shown in from Fig. 1
The exploded perspective view that side is observed.Fig. 4 be the housing 35 of the lens driver 1 shown in Fig. 1 is omitted after in the state of vertical
Body figure.Fig. 5 be the installation component 33 of the lens driver 1 shown in Fig. 1 and housing 35 are omitted after in the state of solid
Figure.
It should be noted that in order to make it easy to understand, in fig. 1 it is illustrated that lenticular body 3 is installed on the shape of lens holders 27
State.Z direction side (upside) shown in Fig. 1 is the side that there are the subject that should shoot, and is configured with its opposition side (downside)
The imaging apparatuss (not shown) opposed with lenticular body 3.In this manual, for convenience of description, there will be has the z side of subject
To being set to upper direction, the direction being configured with imaging apparatuss be set to lower direction and illustrate.
As shown in Fig. 1～Fig. 5, lens driver 1 has such as 11, four the second coils 13, metal structures of base component
Part (line keeper) 15, downside leaf spring 17, first coil 21, four Magnet (permanent magnet) 23, insulating trip 25, lens holders
27th, upside leaf spring 29, yoke 31, installation component (top cover) 33,35,4 messenger wires 411,412,413,414 of housing and vibration-damped component
9.
Lens driver 1 has focal adjustments function and shake correcting function.
Focal adjustments function is the lens holders 27 making holding lenticular body 3 based on shooting image along optical axis direction (z side
To) mobile and carry out the function of focus adjustment, realized by focal adjustment mechanism 5.Focal adjustment mechanism 5 mainly passes through first
Coil 21, Magnet 23, yoke 31, installation component 33, downside leaf spring 17 and upside leaf spring 29 etc. are realizing.
Shake correcting function is to revise the handss producing when shooting based on the positional information being detected by Hall element etc.
The function of the image so as to shoot no flating such as shake, is realized by shaking correction mechanism 7.Revise work(in shake
In energy, as described later, lens holders 27 and focal adjustment mechanism 5 is made to move along the x intersecting with optical axis direction, y-axis direction
Dynamic.
Shake correction mechanism 7 main by the second coil 13, hardware 15, yoke 31, Magnet 23 and messenger wire 411,
412nd, the composition such as 413,414.
In lens driver 1, messenger wire 411,412,413,414 so that lens holders 27 can with optical axis direction
The mode of the upper movement in shake correction direction (x, y-axis direction) that (z-axis direction) intersects supports focal adjustment mechanism 5.
Pars intermedia 85 near the centre at the two ends of messenger wire 411,412,413,414 is contacted with vibration-damped component 9.Vibration-damped component
9 maintaining parts 339 being arranged by the opposed portion 333 in installation component 33 keep (with reference to Fig. 9).
In lens driver 1, contacted with vibration-damped component 9 by making pars intermedia 85, thus by messenger wire 411,412,413,
Vibration on the direction being intersected with optical axis of focal adjustment mechanism 5 of 414 supportings is suppressed, therefore, it is possible to avoid resonating, energy
Enough suitably carry out shake to revise.Further, since the member of formation of the vicinity in the pars intermedia 85 of messenger wire 411,412,413,414
It is provided with vibration-damped component 9 at few position, therefore in manufacturing process, easily vibration-damped component 9 is set, is obtained in that higher productivity ratio.
Hereinafter, the composition to lens driver 1 and effect are described in detail.
The lens holders 27 of lenticular body 3 can be kept from z-axis direction both sides by downside leaf spring 17 and upside leaf spring 29
Clamp and flexibly supported.
In addition, being fixed with first coil 21 in the periphery of lens holders 27.First coil 21 is passed through in lens holders
27 periphery coiled electrical conductor and formed.When first coil 21 is energized, by first coil 21 circulation electric current and come
From the electromagnetic interaction in the magnetic field of Magnet 23, producing makes first coil 21 and lens holders 27 integratedly along z-axis side
Electromagnetic force to (optical axis direction) movement.Thus, focal adjustments function is achieved.
Four the second coils 13 along x, y plane and point symmetry attached located at the central authorities on each side of the rectangle of base component 11
Closely.Cross the second coil 13 from the magnetic field of Magnet 23.Therefore, when the second coil 13 is energized, by the second coil 13
The electric current of middle circulation and the electromagnetic interaction in the magnetic field from Magnet 23, producing makes lens holders 27 and focal adjustments machine
The overall electromagnetic force along the movement of x, y direction of structure 5.Thus, shake correcting function is achieved.
Fig. 6 is the top view of upside leaf spring 29.Fig. 7 be for explanation the housing 35 of lens driver 1 is omitted after
The amplification stereogram of the structure in the corner under state.Fig. 8 is the side view of messenger wire 411,412,413,414 and vibration-damped component 9.Fig. 9
It is the figure after the pars intermedia 85 of the vibration-damped component 9 and messenger wire 411,412,413,414 being kept maintaining part 339 amplifies.Figure 10 is
The axonometric chart of installation component 33.Figure 11 is the amplification stereogram in the corner from base component 11 side observation installation component 33.
Base component 11 is for example constituted by forming to the resin material of insulating properties, is formed as rectangle.Pedestal structure
Part 11 is located at the lower section of focal adjustment mechanism 5.
Near the central authorities of base component 11, it is formed with opening of circle in position corresponding with image sensor (not shown)
Oral area.
Base component 11 four while each while assigned position, be provided with the positioning that the positioning of the second coil 13 is used
Portion.
It is fixed with the flexible base board 8 being mounted with Hall element 462,463 in the lower surface of base component 11.In base component
11 are provided with the through hole making Hall element 462,463 expose.
As shown in Fig. 4, Fig. 5, Fig. 7, hardware 15 is fixed on base component 11, the breakthrough part of hardware 15 151
Corner in base component 11.Hardware 15 is formed by implementing blank processing and Bending Processing to sheet metal, leads to
Cross and be insert-molded and be embedded in base component 11.
The bottom (one end) of the messenger wire 411,412,413,414 extending along optical axis direction (z direction) is inserted and fixed
Breakthrough part 151 in hardware 15.This fixation to be carried out by solder, conductive adhesive etc..As shown in Fig. 3 and Fig. 8,
It is formed with the scolding tin that the bottom (one end) to messenger wire 411,412,413,414 is fixed in the lower surface of breakthrough part 151
Salient point 153.
It should be noted that as shown in Fig. 2 hardware 15 is separated into multiple (three), two of which passes through soldering
Electrically connect with the wiring pattern (not shown) of flexible base board 8.
Messenger wire 411,412,413,414 be section be in circular elongated metal wire rod along optical axis direction extend and
Be formed as linear line.As shown in Figure 5 and 7, pricker is passed through in the upper end (the other end) of messenger wire 411,412,413,414
Solid welding schedules the corner of upside leaf spring 29.As described later, messenger wire 411,412 is also used for powering to first coil 21.
Hereinafter, on the direction intersecting with optical axis to messenger wire 411,412,413,414 and suppression focal adjustment mechanism 5
The mechanism of vibration is described in detail.
As described above, hardware 15 is fixed in the bottom of messenger wire 411,412,413,414, upside is fixed in upper end
Leaf spring 29, focal adjustment mechanism 5 is supported as moving along x, y direction.
As shown in Fig. 4, Fig. 5, Fig. 7～Fig. 9, between the upper end and bottom of messenger wire 411,412,413,414
Vibration-damped component 9 is run through in the state of being contacted with vibration-damped component 9 by pars intermedia 85.
As shown in FIG. 8 and 9, vibration-damped component 9 is glue, in manufacturing process, vibration-damped component 9 be coated on messenger wire 411,412,
413rd, 414 pars intermedia 85, be clamped by surface tension and be held in constitute maintaining part 339 two protuberance 339a it
Between after so that it is solidified its irradiation ultraviolet radiation etc..Vibration-damped component 9 is made up of ultra-violet solidified colloidal resin, for example, can make
The silicone adhesive (product name: tb3168e) being manufactured with three key companies.
As shown in Fig. 9, Figure 10 etc., maintaining part 339 is located at the opposed portion 333 of installation component 33.Opposed portion 333 is located at aftermentioned
The frame-shaped portion 331 of the installation component 33 being formed as a generally rectangular corner, and discretely right with messenger wire 411,412,413,414
Put.
As described above, maintaining part 339 leading section have from the opposed portion 333 of installation component 33 with clip messenger wire 411,
412nd, two protuberance 339a that 413,414 mode projects outward.Across vibration-damped component 9 between this two protuberance 339a
And keep the pars intermedia 85 of messenger wire 411,412,413,414.
So, by fixing vibration-damped component 9 between two protuberance 339a of composition maintaining part 339, can be by vibration-damped component 9
Accurately it is configured at the position of the defined in design such that it is able to improve the vibration suppressioning effect that vibration-damped component 9 is played.Separately
Outward, vibration-damped component 9 stably can be held in maintaining part 339.
It should be noted that installation component 33 shake corrective action in constitute together with lens holders 27 with optical axis
The moving body of the upper movement in shake correction direction (x, y-axis direction) that direction (z-axis direction) intersects.
In the present embodiment, due to vibration-damped component 9 being set to surround the pars intermedia 85 of messenger wire 411,412,413,414, because
This, even if it is also possible to make vibration-damped component 9 stay messenger wire in the case of creating to the vibration in the direction intersecting with optical axis direction
411st, 412,413,414 surrounding is such that it is able to maintain vibration suppressioning effect.
As shown in fig. 6, upside leaf spring 29 has the first upside leaf spring 129 being made up of the metallic plate of electrically separated electric conductivity
With the second upside leaf spring 229.
In addition, as shown in figure 5, one end of first coil 21 is connected with the first upside leaf spring 129 conducting via electric wire 87,
The other end of first coil 21 is connected with the second upside leaf spring 229 conducting via electric wire 89.
According to this structure, messenger wire 411 is switched on one end of first coil 21 and is connected, and messenger wire 412 and first coil
21 other end is switched on and connects, thus powering to first coil 21.
As shown in Fig. 2～Fig. 5, it is respectively fixed with the second coil 13 of elongated shape on four sides of base component 11.So,
By making the structure on four sides that the second coil 13 is fixed on base component 11, the positioning of the second coil 13 becomes easy, energy
Enough simplify manufacturing process.It should be noted that the both ends of each the second coil 13 are brazed in the wiring pattern of flexible base board 8.
Cross the second coil 13 from the magnetic field of Magnet 23.Therefore, by the second coil 13 circulation electric current and come
From the electromagnetic interaction in the magnetic field of Magnet 23, produce and make lens holders 27 and focal adjustment mechanism 5 entirety along x, y side
Electromagnetic force to movement.
Here, the second coil 13 is located at the lower section (base component 11 side) of yoke 31 and Magnet 23, and at z-axis (optical axis)
Overlap with these components on direction.In addition, the second coil 13 is fixed on base component 11.
So, by making the second coil 13, the position being overlapped with yoke 31 and Magnet 23 is located on z-axis (optical axis) direction
Put, compared with the situation positioned at the outside of these components, the second coil 13 can be configured in the high space of magnetic flux density.Cause
This, can play high electromagnetic force (thrust) characteristic between the electric current circulating in the second coil 13 and Magnet 23.
It should be noted that in the present embodiment, the second coil 13 using coiled electrical conductor coil but it is also possible to
Constituted using the thin film being formed with conductive pattern by stacking multi-disc, the coil of so-called printed circuit tabular (is laminated
Coil).
As shown in Fig. 2 and Fig. 5, the downside leaf spring 17 that is made up of metallic plate has a breakthrough part 171 in corner, Fig. 3 and
The second connecting portion 333a insertion breakthrough part 171 of the installation component 33 shown in Figure 11.Second connecting portion 333a is being inserted into insertion
Its front end is made to deform in the state of portion 171.Thus, downside leaf spring 17 is fixed in the opposed portion 333 of installation component 33.Should
Fixation is carried out by ca(u)lk.Ca(u)lk is for example carried out by carrying out conquassation from front to the projection of resin.Need explanation
It is that, in Fig. 3 and Figure 11 etc., first connecting portion 331a and second connecting portion 333a are illustrated with the state being crushed.
In addition, the bottom of lens holders 27 is fixed in the inboard portion of downside leaf spring 17.
In the present embodiment, it is installation component because downside leaf spring 17 and upside leaf spring 29 are fixed on same component
33, therefore, it is possible to make lens holders 27 be difficult to respect to inclined light shaft.
As shown in FIG. 2 and 3, in the form of a substantially rectangular, winding is fixed on the periphery of lens holders 27 to first coil 21.The
One coil 21 to be powered as described above by messenger wire 411,412.
In addition, four Magnet 23 are located at the outside of lens holders 27 and the position of the inner side of yoke 31, and and First Line
Four edge of circle 21 are respectively provided with opposed with gap.
As shown in FIG. 2 and 3, yoke 31 rectangle four while each while have: with the side of Magnet 23 to abut shape
The opposed yoke side surface part 371 of state；And with the upper surface of Magnet 23 with the opposed yoke top 311 of the state of abutting.Magnet 23
Form as one with yoke 31, yoke 31 is integratedly moved with Magnet 23.
It is formed with total eight breakthrough parts 313 in the both sides of the notch part 321 at the yoke top 311 of yoke 31.Make Figure 11
First connecting portion 331a of the lower surface setting in the shown frame-shaped portion 331 in installation component 33 runs through and is fixed on yoke 31
Breakthrough part 313.Thus, yoke 31 and installation component 33 are integrated.
This fixation is carried out by ca(u)lk.It should be noted that the fixation based on ca(u)lk of yoke 31 and installation component 33
Position adds up to eight but it is also possible to adopt the fixation based on bonding agent to position (adjustment loosens) at least one.
Now, first connecting portion 331a also run through in the lump the insulating trip 25 shown in Fig. 2 and Fig. 3 breakthrough part 251 and
The upside breakthrough part 293 of leaf spring 129,229 and be fixed on yoke 31.Thus, insulating trip 25 and upside leaf spring 29 are with mounted
The state that component 33 and yoke 31 sandwich is fixed.It should be noted that lens are fixed in the inboard portion of upside leaf spring 129,229
The top of keeper 27.
In addition, the corner of yoke 31 become for guarantee installation component 33 opposed portion 333 residing for space notch part
321.
In addition, as shown in Fig. 2, Fig. 3 and Fig. 5, yoke 31 has the inner yoke portion of the inner side being configured at first coil 21
361.
So, configure first coil in the way of due to clamping by the yoke side surface part 371 by yoke 31 and inner yoke portion 361
21, therefore, it is possible to improve the thrust of focal adjustments.
In addition, in the present embodiment, due to having yoke 31, so even being also used as focal adjustment mechanism in Magnet 23
5 and shake correction mechanism 7 in the case of make the thrust of lens holders 27 movement it is also possible to improve.
As shown in Fig. 2 the upper surface at the yoke top 311 of yoke 31 is fixed with insulating trip 25, on insulating trip 25
It is fixed with upside leaf spring 29.It is short-circuited therefore, it is possible to be effectively prevented from the first upside leaf spring 129 and the second upside leaf spring 229.
It should be noted that can also replace arranging insulating trip 25 and the upper surface at yoke top 311 to be formed absolutely by printing etc.
Velum.
Installation component 33 has: is shaped by the resin etc. of insulating properties, across upside leaf spring 29 and insulating trip 25 and yoke
The frame-shaped portion 331 being formed as polygon (generally rectangular bodies) of 31 yoke top 311 overlap；And it is configured at lacking of yoke 31
The opposed portion 333 of oral area 321.It should be noted that opposed portion 333 by the corner portion in substantially rectangular frame-shaped portion 331 from frame
The leg that shape portion 331 projects downwards is constituted.
Magnet 23 is configured between adjacent opposed portion 333 (leg) with the state that located, and solid by bonding agent
Side due to opposed portion 333.Thus, Magnet 23, installation component 33 and forming as one of yoke 31.
As above-mentioned use Figure 11 explanation, the lower surface in the frame-shaped portion 331 of installation component 33 is formed with first and dashes forward
Play portion 331a, be formed with second connecting portion 333a in the lower surface of opposed portion 333.
Second connecting portion 333a of installation component 33 runs through the breakthrough part 171 of downside leaf spring 17, thus by downside leaf spring 17
It is installed on installation component 33.
In the present embodiment, first being integrally formed with upside leaf spring 29 and being fixed on the installation component 33 of yoke 31 is dashed forward
Play portion 331a and be fixed on second connecting portion 333a of the installation component 33 of breakthrough part 171 of downside leaf spring 17 all to identical
Direction (lower section) project.Therefore, during fabrication, the direction of component need not be overturned when installation component 33 is installed on yoke 31
Operation, it is possible to increase productivity ratio.In addition it is possible to improve positioning precision when manufacturing.
In addition, in lens driver 1, because downside leaf spring 17 and upside leaf spring 29 are both secured to installation component
33, therefore, it is possible to easily be positioned.
Hereinafter, the effect to lens driver 1 illustrates.
[focal adjustments]
In focal adjustments action, to first coil 21 supply electric current, with based on via lenticular body 3 to imaging apparatuss
The corresponding shooting image of imaging results of (image sensor) incident light is adjusting focus.
Then, by the electric current of circulation in first coil 21 and the electromagnetic interaction from the magnetic field of Magnet 23, produce
Life makes first coil 21 and lens holders 27 integratedly along the electromagnetic force of optical axis (z-axis) direction movement.
[shake is revised]
In shake corrective action, based on the positional information being detected from Hall element 462,463 etc. to the second coil 13
Energising.It should be noted that the second coil 13 is configured to, can extend to a pair of the coil extending in the x-direction and in the y-direction
A pair of coil independently supplies electric current.
When being energized to the second coil 13, by the electric current of circulation in the second coil 13 and from the magnetic field of Magnet 23
Electromagnetic interaction, produces and makes lens holders 27 and the overall electromagnetic force along the movement of x, y direction of focal adjustment mechanism 5.
Then, the focal adjustment mechanism 5 being supported by messenger wire 411,412,413,414 is in the shake orthogonal with optical axis direction (z-axis direction)
Revise the upper movement in direction (x, y-axis direction).
Now, because the vibration-damped component 9 that the pars intermedia 85 of messenger wire 411,412,413,414 is kept with maintained portion 339 contacts,
Therefore, it is possible to avoid lens holders 27 and focal adjustment mechanism 5 to vibrate and resonated.Thereby, it is possible to suitably be trembled
Dynamic correction.
As described above, according to lens driver 1, the pars intermedia 85 at the two ends of messenger wire 411,412,413,414
Contact with the vibration-damped component 9 being kept by maintaining part 339.Thereby, it is possible to suppress to be adjusted by the focus of messenger wire 411,412,413,414 supporting
Vibration on the direction being intersected with optical axis of section mechanism 5, therefore, it is possible to avoid resonating, can suitably be carried out shake and revise.Separately
Outward, due to vibration-damped component 9 pars intermedia 85 at the two ends located at messenger wire 411,412,413,414 vicinity, therefore easily setting (apply
Apply) vibration-damped component 9, it is obtained in that higher productivity ratio.Further, since vibration-damped component 9 is set to surround messenger wire 411,412,413,414
Pars intermedia 85, therefore, it is possible to the long-time contact condition maintaining vibration-damped component 9 and messenger wire 411,412,413,414.
In addition, in lens driver 1, as shown in Fig. 7 and Fig. 9, keeping the maintaining part 339 of vibration-damped component 9 to possess two
Individual protuberance 339a, and be set to sandwich the centre of messenger wire 411,412,413,414 between two protuberance 339a from both sides
Portion 85.
So, by constituting holding vibration-damped component 9 between two protuberance 339a of maintaining part 339, can be by vibration-damped component 9
Accurately it is configured at the position of the defined in design, it is possible to increase the vibration suppressioning effect that vibration-damped component 9 is played.In addition,
Vibration-damped component 9 stably can be held in maintaining part 339.
In addition, in lens driver 1, due to the installation component in the position near messenger wire 411,412,413,414
33 opposed portion 333 setting maintaining part 339, therefore, it is possible to stably be held in maintaining part 339 by vibration-damped component 9.
In addition, in lens driver 1, the corner in the frame-shaped portion 331 positioned at installation component 33 corner opposed
Portion 333 arranges maintaining part 339.Therefore, compared with the situation of maintaining part 339 is set with the edge in installation component 33, can expand
Positioned at the region (angular range) in the outside of maintaining part 339, the installation of vibration-damped component 9 becomes easy.That is, can easily be subtracted
Shake part 9 the coating based on allotter etc., vibration-damped component 9 irradiation ultraviolet radiation etc. is made vibration-damped component 9 solidification operation.
In addition, in lens driver 1, form as one with upside leaf spring 29 and be fixed on the installation component of yoke 31
33 first connecting portion 331a and be fixed on downside leaf spring 17 the installation component 33 of breakthrough part 171 second connecting portion
333a is all prominent to identical direction (lower section).Therefore, need not run when installation component 33 is installed on yoke 31 during fabrication
The operation in the direction of component, it is possible to increase productivity ratio.In addition it is possible to improve positioning precision when manufacturing.
In addition, in lens driver 1, passing through of hardware 15 is run through in the bottom of messenger wire 411,412,413,414
Logical portion 151 is simultaneously fixed by soldering.
According to this structure, can reliably carry out the supporting of messenger wire 411,412,413,414.Further, since scolding tin salient point
153 lower face side being formed at hardware 15, thus without the elasticity hindering messenger wire 411,412,413,414.
In addition, according to lens driver 1, the second coil 13 is arranged by the predetermined portion on four sides in base component 11
Location division, thus the positioning of the second coil 13 becomes easy, manufacturing process can be simplified.
The invention is not limited in above-mentioned embodiment.
That is, with regard to the element of above-mentioned embodiment, those skilled in the art the technical scope of the present invention or its
In equivalent scope, various changes, combination, sub-combinations thereof and replacement can be carried out.
Figure 12 is to save the housing of the lens driver involved by the variation of embodiments of the present invention for explanation
The axonometric chart of the structure in corner in the state of after slightly.
In the present embodiment, constituting holding between the protuberance 1339a of two rectangular shapes of maintaining part 1339
Vibration-damped component 9.
Figure 13 is for illustrating the shell of the lens driver involved by another variation of embodiments of the present invention
The axonometric chart of the structure in corner in the state of after body omission.
In the above-described embodiment although exemplifying the situation keeping vibration-damped component 9 between two symmetrical online protuberances,
But in the example shown in Figure 13, the recess being formed at the asymmetrical maintaining part in left and right 2339 keeps vibration-damped component 9.
As long as the shape of the maintaining part of vibration-damped component 9 can keep vibration-damped component 9, especially do not limit.
In addition, in the above-described embodiment although exemplifying the situation employing four messenger wires 411,412,413,414,
But the quantity of messenger wire does not especially limit.
In addition, in the above-described embodiment although illustrate the pars intermedia 85 of a messenger wire 411,412,413,414 of sening as an envoy to
The situation of one vibration-damped component 9 contact is but it is also possible to the various location beyond pars intermedia or pars intermedia and multiple vibration-damped components 9
Contact.
Alternatively, it is also possible to arrange multiple maintaining parts 339 with respect to a messenger wire 411,412,413,414.
In addition, the component of vibration-damped component 9 as long as there is ability of absorbing vibration can be it is not limited to gluey.
In addition, in the above-described embodiment although exemplifying the first upside leaf spring 129 and the second upside leaf spring 229 thing
Manage detached situation, if but being electrically separated it is also possible to be configured to a module.
Share Magnet 23 although exemplifying in focal adjustment mechanism 5 and shake correction mechanism 7 in the above-described embodiment
Situation is but it is also possible to be configured to from focal adjustment mechanism 5 and shake correction mechanism 7 accordingly using different Magnet.
In addition, the other end of messenger wire 411,412,413,414 is fixed on although exemplifying in the above-described embodiment
The situation of upside leaf spring 29 is but it is also possible to be fixed on installation component 33.
In addition, in the above-described embodiment although exemplifying yoke 31 and installation component 33 is the situation of rectangle, but this
As long as invention yoke and installation component are polygon, especially do not limit.
In addition, in the above-described embodiment although exemplifying the lens driver 1 possessing yoke 31, but yoke is not
Necessary, lens driver can not also have yoke.
Industrial applicibility
The present invention can be applied to employ the lens driver of messenger wire.
Claims (10)
1. a kind of lens driver, it possesses: can keep the lens holders of lenticular body；Make described lens holders along
The focal adjustment mechanism of optical axis direction movement；And make described lens holders and described focal adjustment mechanism with described light
The shake correction mechanism that the side that direction of principal axis intersects moves up,
Described lens driver has:
Many messenger wires, described many messenger wires are so that described lens holders can be moved on the direction being intersected with described optical axis direction
Dynamic mode supports to described focal adjustment mechanism；
Moving body, described moving body is moved up in the side being intersected with described optical axis direction together with described lens holders；With
And
Vibration-damped component, described vibration-damped component is set to contact with described moving body and this two side of described messenger wire.
2. lens driver according to claim 1, wherein,
Described messenger wire is linear,
Described vibration-damped component is set to surround the pars intermedia being located between the both ends of described messenger wire.
3. lens driver according to claim 1, wherein,
Described lens driver has:
Base component, described base component is located at the lower section of described focal adjustment mechanism and the bottom of described messenger wire is solid
Fixed；
Downside leaf spring and upside leaf spring, described downside leaf spring and described upside leaf spring are with from the both sides of described optical axis direction folder
The mode holding described lens holders keeps described lens holders；And
Installation component, described downside leaf spring and described upside leaf spring are fixed by described installation component,
Described upside leaf spring is fixed in the upper end of described messenger wire.
4. lens driver according to claim 2, wherein,
Described lens driver has:
Base component, described base component is located at the lower section of described focal adjustment mechanism and the bottom of described messenger wire is solid
Fixed；
Downside leaf spring and upside leaf spring, described downside leaf spring and described upside leaf spring are with from the both sides of described optical axis direction folder
The mode holding described lens holders keeps described lens holders；And
Installation component, described downside leaf spring and described upside leaf spring are fixed by described installation component,
Described upside leaf spring is fixed in the upper end of described messenger wire.
5. the lens driver according to claim 3 or 4, wherein,
Described installation component have be formed as polygonal frame-shaped portion and be located at described frame-shaped portion corner and with described messenger wire pair
The opposed portion put,
It is provided with the maintaining part keeping described vibration-damped component in described opposed portion, described installation component constitutes described moving body.
6. lens driver according to claim 5, wherein,
It is provided with two protuberances projecting outward in the way of clipping described messenger wire, described two protuberances in described opposed portion
Constitute described maintaining part.
7. lens driver according to claim 6, wherein,
Described base component has the hardware being formed with breakthrough part,
The described bottom of described messenger wire is run through and is fixed on the described breakthrough part of described hardware.
8. the lens driver according to claim 3 or 4, wherein,
Described base component has the hardware being formed with breakthrough part,
The described bottom of described messenger wire is run through and is fixed on the described breakthrough part of described hardware.
9. lens driver according to claim 5, wherein,
Described lens driver possesses the yoke integrated with described installation component,
The described opposed portion of described installation component is made up of the leg projecting downwards of the corner portion in described frame-shaped portion,
Lower surface in the described frame-shaped portion of the described installation component that described upside leaf spring is fixing is provided with first connecting portion,
Described first connecting portion runs through the breakthrough part of described upside leaf spring and the breakthrough part of described yoke, thus by described epipleural
Spring and described yoke are fixed on the described frame-shaped portion of described installation component,
In described leg, leaf spring fixing lower surface in described downside is provided with second connecting portion,
Described second connecting portion runs through the breakthrough part of described downside leaf spring, thus leaf spring on the downside of this is fixed on described leg.
10. lens driver according to claim 9, wherein,
Described lens driver has:
First coil, it is used for producing makes described lens holders along the electromagnetic force of optical axis direction movement；
Magnet, it is located at the outside of described first coil and the position opposed with this first coil, and this Magnet produces magnetic field, at this
Produce based on the electromagnetic force on the optical axis direction of electromagnetic interaction between magnetic field and the electric current circulating in described first coil；
And
Second coil, in this second coil midstream galvanization, the electromagnetism phase interaction in the magnetic field producing with described Magnet in this electric current
With under, produce the electromagnetic force on the direction that intersects with described optical axis direction,
Described first coil is fixed on the periphery of described lens holders, and integratedly moves with this lens holders,
Described yoke is integratedly moved with described Magnet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-146067 | 2015-07-23 | ||
| JP2015146067A JP6542059B2 (en) | 2015-07-23 | 2015-07-23 | Lens drive |
Publications (2)
| Publication Number | Publication Date |
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| CN106371188A true CN106371188A (en) | 2017-02-01 |
| CN106371188B CN106371188B (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610547330.1A Active CN106371188B (en) | 2015-07-23 | 2016-07-12 | Lens driver |
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| Country | Link |
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| JP (1) | JP6542059B2 (en) |
| CN (1) | CN106371188B (en) |
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| CN108445692A (en) * | 2017-02-16 | 2018-08-24 | 台湾东电化股份有限公司 | Driving mechanism |
| CN110383133A (en) * | 2017-02-08 | 2019-10-25 | 阿尔卑斯阿尔派株式会社 | Lens driver |
| CN114035296A (en) * | 2021-04-28 | 2022-02-11 | 新思考电机有限公司 | Suspension mechanism of lens driving device, driving and image pickup device, and electronic apparatus |
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| KR102414104B1 (en) * | 2017-04-06 | 2022-06-29 | 엘지이노텍 주식회사 | A lens moving unit, and camera module and optical instrument including the same |
| JP6882675B2 (en) * | 2017-06-19 | 2021-06-02 | ミツミ電機株式会社 | Lens drive, camera module, and camera mount |
| JP7007553B2 (en) * | 2017-07-31 | 2022-01-24 | ミツミ電機株式会社 | Lens drive, camera module, and camera-mounted device |
| CN110275268A (en) * | 2018-03-14 | 2019-09-24 | 新思考电机有限公司 | Lens driver, camera apparatus and electronic equipment |
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Also Published As
| Publication number | Publication date |
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| CN106371188B (en) | 2019-02-05 |
| JP6542059B2 (en) | 2019-07-10 |
| JP2017026853A (en) | 2017-02-02 |
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