CN105891999A - Lens drive device - Google Patents
Lens drive device Download PDFInfo
- Publication number
- CN105891999A CN105891999A CN201610082083.2A CN201610082083A CN105891999A CN 105891999 A CN105891999 A CN 105891999A CN 201610082083 A CN201610082083 A CN 201610082083A CN 105891999 A CN105891999 A CN 105891999A
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- CN
- China
- Prior art keywords
- lens
- rake
- lens barrel
- component
- driver
- 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.)
- Pending
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Classifications
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- 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
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
-
- 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
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
Abstract
The invention provides a lens drive device capable of reliably holding a lens barrel. The lens drive device (101) includes a cylindrical lens holding member (12) capable of holding a lens barrel (11) provided with a lens; a support member (6) supporting the lens holding member (12) so as to be movable in an optical axis direction (JD); and a drive mechanism (M3) for moving the lens holding member (12) up and down along the optical axis direction (JD). A positioning portion (52) having a constant gap with the lens barrel (11) and an inclined portion (92) being located on an upper side of the positioning portion (52) and facing upward to have a larger gap with the lens barrel (11) than that of the positioning portion (52) are arranged on an inner peripheral surface (12q), through which the lens barrel (11) passes, of a cylindrical portion (12s) of the lens holding member (12). An adhesive is filled between at least the inclined portion (92) and the lens barrel (11), and the lens barrel (11) is fixed to the lens holding member (12) by means of the adhesive.
Description
Technical field
The present invention relates to be equipped on the lens driver of the portable equipment such as attaching camera function.
Background technology
In recent years, the portable equipment with mobile phone as representative is generally equipped with phase machine mechanism.And, for as lift-launch
For the lens driver of the critical piece of the phase machine mechanism of this small portable device, in addition to requiring miniaturization, high
Precision ground drives lens barrel (lens barrel) such requirement the most day by day to become to rising.As meeting the lens driving dress that the two requires
Put, it is known to the magnetic circuit being used for being driven the lens carrier (lens holding component) keeping lens barrel (lens barrel) is arranged
This structure of surrounding in lens carrier.
It addition, as the method making lens barrel be held in lens carrier in said lens driving means, there is utilization
Screw fastens the screw type of both sides and the type of bond using binding agent to be fixed, especially in type of bond, by
In there is not ridge, therefore having and can increase lens barrel and increase lens diameter and making lens mirror can be used in
The mould of cylinder and lens carrier becomes the advantages such as simple shape.
As the lens driver of this type of bond, in patent document 1 (conventional example), it is proposed that as shown in figure 14
Such lens driver 900.Figure 14 is the use of the longitudinal direction of the photomoduel 999 of the lens driver 900 of conventional example
Sectional view.
Lens driver 900 shown in Figure 14 includes: make the lens barrel 907 of the multiple imaging lens system of holding 906 along light
Movable part that direction of principal axis moves and the fixed part that position does not changes when driving imaging lens system 906, movable part is received
Inside at fixed part.It addition, as shown in figure 14, as movable part, lens driver 900 has holding lens barrel 907
Lens carrier 908 and be fixed on the coil 910 of peripheral end (flange part) of lens carrier 908.It addition, as shown in figure 14,
As fixed part, lens driver 900 has the pedestal 915 bottom composition, is fixed on pedestal 915 and constitutes side surface part
Yoke 911, be arranged in the medial surface of yoke 911 permanent magnet 912 and be arranged in yoke 911 top and constitute top (end face)
Cover 914.And, the lens driver 900 of this type of bond is excellent when lens barrel 907 and lens carrier 908 fixing
Choosing uses the UV binding agent of thermohardening type or anaerobic UV binding agent, makes binding agent enter lens carrier 908 and lens mirror
In the gap of cylinder 907, and it is formed on lens carrier 908 and lens barrel 907 surface the filler rod (binding agent) 924 heaved.
Citation
Patent document 1: Japanese Unexamined Patent Publication 2010-134409 publication
But, in the prior embodiment, there is following technical problem: due between lens barrel 907 and lens carrier 908
Clearance constant and narrow (narrow to the degree that cannot mark in Figure 14), therefore between lens barrel 907 and lens carrier 908
Adhesion strength dies down, because falling etc. and in the case of lens driver 900 is applied with stronger impact, it is possible to cause
Lens barrel 907 comes off.
Summary of the invention
The present invention is used for solving above-mentioned technical problem, its object is to provide a kind of and can reliably keep lens barrel
Lens driver.
Solution
In order to solve this technical problem, the lens driver of the present invention possesses: the lens of tubular keep component, and it can
Keep arranging lensed lens barrel；Supporting member, these lens holding member supporting is can be along optical axis side by it
To movement；And drive mechanism, its make described lens keep component move up and down along described optical axis direction, described lens drive
Device is characterised by, it is fixed to be provided with on the inner peripheral surface in the cylinder portion of the described lens holding component passed for described lens barrel
Position portion and rake, the clearance constant between described location division and described lens barrel, described rake is positioned at described location division
Upside, and along with upward, for the gap between described location division and described lens barrel, described inclination
Gap between portion and described lens barrel becomes big, at least filling adhesive between described rake and described lens barrel,
By this binding agent, described lens barrel is fixed on described lens and keeps component.
According to this structure, the lens driver of the present invention can make binding agent reliably and adequately be filled in lens holding
Between component and lens barrel.Therefore, it is possible to improve lens to keep the adhesion strength between component and lens barrel.Thus, because of
Fall etc. and in the case of lens driver is applied with stronger impact, it is possible to reliably lens barrel is kept.
It addition, the lens driver of the present invention is characterised by, the border between described location division and described rake
Position on the lower, the ratio centre position that portion is positioned on the described optical axis direction of cartridge.
According to this structure, it is possible to guarantee the filling region of the binding agent formed by rake and lens barrel more.By
This, it is possible to improve further lens and keep the adhesion strength between component and lens barrel, even if because of fall etc. and to lens
In the case of driving means is applied with stronger impact, it is also possible to more reliably lens barrel is kept.
It addition, the lens driver of the present invention is characterised by, described rake has the first rake and second and inclines
Tiltedly portion, described first rake and described second rake each with the straight line along described optical axis direction formed by angle i.e. tilt
Angle is different, and the described inclination angle of described second rake is bigger than the described inclination angle of described first rake, and described second tilts
Portion is disposed in the position of upper side keeping component than described first rake by described lens, described second rake with
It is filled with described binding agent between described lens barrel and between described first rake and described lens barrel.
According to this structure, it is possible to guarantee the filling region of the binding agent formed by rake and lens barrel more, and
And especially can form, in the second rake side, the adhesive layer widened.Therefore, it is possible to improve lens further to keep component
And the adhesion strength between lens barrel, and especially adhesive layer is wedge shape, it is possible to make lens barrel be not easy from below
Side comes off.Thus, even if because falling etc. and in the case of lens driver is applied with stronger impact, it is also possible to enter one
Lens barrel is kept by step.
It addition, the lens driver of the present invention is characterised by, in the lower side of described lens barrel, it is provided with from outward
The teat that the direction that circumferential and described optical axis direction intersects is prominent, this lens barrel side from below keeps component through described lens
Cartridge, and described teat is arranged opposite with the bottom of cartridge.
According to this structure, even if being applied with the situation of stronger impact to the upper side of lens barrel because falling etc.
Under, owing to teat can abut with bottom, therefore it also is able to eliminate the possibility that lens barrel departs from upward.
It addition, the lens driver of the present invention is characterised by, the outer peripheral face of described lens barrel is formed with energy
Enough house the groove portion of described binding agent.
According to this structure, at this groove portion filling adhesive such that it is able to guarantee more by the outer peripheral face of lens barrel with
Lens keep the filling region of the binding agent of the rake formation of component.Thereby, it is possible to improve lens barrel and lens further
Keep the adhesion strength between component, even if being applied with the situation of stronger impact to lens driver because falling etc.
Under, it is also possible to utilize lens to keep component, more reliably lens barrel is kept.
Invention effect
The lens driver of the present invention can make binding agent reliably and adequately be filled into lens holding component and lens
Between lens barrel.Therefore, it is possible to improve lens to keep the adhesion strength between component and lens barrel.Thus, even if because falling
Deng and in the case of lens driver is applied with stronger impact, it is also possible to reliably keep lens barrel.
Accompanying drawing explanation
Fig. 1 is the exploded perspective view that the lens driver of the first embodiment to the present invention illustrates.
Fig. 2 is the figure that the lens driver of the first embodiment to the present invention illustrates, and (a) of Fig. 2 is three-dimensional
Figure, the side view that (b) of Fig. 2 observes from the X1 side shown in Fig. 2 (a).
Fig. 3 is the figure that the lens driver of the first embodiment to the present invention illustrates, and (a) of Fig. 3 is from Fig. 2
The top view that shown Z1 side is observed, (b) of Fig. 3 is the upward view observed from the Z2 side shown in Fig. 2.
Fig. 4 is that the lens barrel to the lens driver involved by first embodiment of the present invention illustrates
Figure, (a) of Fig. 4 is to maintain the stereogram of lensed lens barrel, and (b) of Fig. 4 observes from the X1 side shown in Fig. 4 (a)
The side view of the lens barrel arrived.
Fig. 5 is the figure that the lens driver of the first embodiment to the present invention illustrates, and (a) of Fig. 5 is along Fig. 3
The sectional view cut open of the IV-IV line shown in (a), the sectional view that (b) of Fig. 5 cuts open along the V-V line shown in Fig. 3 (a).
Fig. 6 is that the lens to the lens driver involved by first embodiment of the present invention keep component to illustrate
Figure, (a) of Fig. 6 is the top perspective view that the lens observed from the Z1 side shown in Fig. 1 keep component, and (b) of Fig. 6 is from figure
The lens that Z2 side shown in 1 is observed keep the lower section stereogram of component.
Fig. 7 is that the lens to the lens driver involved by first embodiment of the present invention keep component to illustrate
Figure, be to be shown in lens to keep being wound with on component the stereogram of the state of coil.
Fig. 8 is the figure illustrating the lens driver involved by first embodiment of the present invention, is Fig. 5
The amplification view of the portion P shown in (a).
Fig. 9 is the figure that the yoke to the lens driver involved by first embodiment of the present invention illustrates, Fig. 9's
A () is the top perspective view of the yoke observed from the Z1 side shown in Fig. 1, (b) of Fig. 9 is to observe from the Z2 side shown in Fig. 1
The lower section stereogram of yoke.
Figure 10 is the figure that the lens driver of the first embodiment to the present invention illustrates, and eliminates Fig. 2
Lens barrel shown in (a) and the stereogram of yoke.
Figure 11 is that the supporting member to the lens driver involved by first embodiment of the present invention illustrates
Figure, (a) of Figure 11 is the top view of the upside leaf spring as supporting member, and (b) of Figure 11 is the lower side panel as supporting member
The top view of spring.
Figure 12 is that the fixed mechanism to the lens driver involved by first embodiment of the present invention illustrates
Figure, (a) of Figure 12 is the stereogram of base component, and (b) of Figure 12 is the stereogram assembling downside leaf spring on the base member.
Figure 13 be the variation 1 to the lens driver involved by first embodiment of the present invention illustrate saturating
Mirror keeps the stereogram of component.
Figure 14 is the use of the longitudinal sectional view of the photomoduel of the lens driver of conventional example.
Description of reference numerals:
11 lens barrels
11p outer peripheral face
11t teat
11u groove portion
12, C12 lens keep component
12q inner peripheral surface
12s cylinder portion
12u bottom
52 location divisions
92 rakes
92a the first rake
92b, C92b second rake
M3 drive mechanism
6 supporting members
R8 fixed mechanism
RNZ lens
JD optical axis direction
101 lens drivers
Detailed description of the invention
Hereinafter, referring to the drawings embodiments of the present invention are illustrated.
[the first embodiment]
Fig. 1 is the exploded perspective view that the lens driver 101 of the first embodiment to the present invention illustrates.Fig. 2
(a) be the stereogram of lens driver 101, the lens that (b) of Fig. 2 observes from the X1 side shown in Fig. 2 (a) drive
The side view of device 101.(a) of Fig. 3 is the top view of the lens driver 101 observed from the Z1 side shown in Fig. 2, Fig. 3
(b) be the upward view of the lens driver 101 observed from the Z2 side shown in Fig. 2.
The lens driver 101 of first embodiment of present invention rectangular shape in Fig. 2 and as shown in Figure 3
Outward appearance, as it is shown in figure 1, this lens driver 101 possesses: be provided with the lens barrel 11 of lens RNZ, have for lens barrel
The lens of the cylinder portion 12s that 11 pass keep component 12, make lens keep component 12 along optical axis direction JD (the Z side shown in Fig. 2
To) drive mechanism M3 that moves up and down and lens keep component 12 support the supporting for moving to optical axis direction JD
Component 6 (upside the most described later leaf spring 16, downside leaf spring 26A and downside leaf spring 26B).Additionally, the present invention's
The lens driver 101 of the first embodiment has the part for fixed bearing component 6 fixed mechanism R8 and
For the terminal 7 with external electrical connections.
It addition, in the lens driver 101 of first embodiment of the present invention, as it is shown in figure 1, drive mechanism M3 tool
The rectangle of outside housing standby be wound into the ring-type coil of octagon 33, doubling as and the yoke 34 of box like and with the four of coil 33
Four magnet 35 of the opposed arranging in limit.It addition, as it is shown in figure 1, fixed mechanism R8 is mainly by the base component 18 having imbedded terminal 7
Constitute.
Lens barrel 11 is fixed on lens by binding agent and keeps component 12 and be arranged on not by this lens driver 101
On the substrate being provided with imaging apparatus of diagram.And, lens driver 101 is by leading to from the power supply of substrate to coil 33
Electricity, utilizes the electromagnetic force produced by drive mechanism M3, makes the lens of configuration above imaging apparatus keep component 12 along thoroughly
The optical axis direction JD (Z-direction shown in Fig. 2) of mirror RNZ is mobile.It is to say, lens driver 101 can make to be held in
The lens RNZ of mirror lens barrel 11 moves to the direction away from imaging apparatus and carries out macroshot, and can make to be held in lens mirror
The lens RNZ of cylinder 11 moves to the direction close to imaging apparatus and carries out infinity photography.
Then, utilize accompanying drawing that each member of formation of lens driver 101 is described in detail.First, lens are driven
The lens barrel 11 of dynamic device 101 illustrates.Fig. 4 is the figure that lens barrel 11 is described, (a) of Fig. 4 has been to maintain lens RNZ
The stereogram of lens barrel 11, the side-looking of the lens barrel 11 that (b) of Fig. 4 observes from the X1 side shown in Fig. 4 (a)
Figure.Fig. 5 is the figure that the lens driver 101 of the first embodiment to the present invention illustrates, and (a) of Fig. 5 is along Fig. 3
A sectional view that the IV-IV line shown in () is cut open, the sectional view that (b) of Fig. 5 cuts open along the V-V line shown in Fig. 3 (a).Need
Illustrating, (a) of Fig. 5 and (b) of Fig. 5 become the optical axis (central shaft of lens holding component 12) comprising lens RNZ
And sectional view lens driver 101 cut along the plane of this optical axis.
The lens barrel 11 of lens driver 101 is by utilizing the synthetic resin such as polyamide (PA, polyamide)
Carry out injection molded to make, as shown in Figure 4, this cylindrical shape of lens barrel 11.And, as it is shown in figure 5, at lens barrel
The cylinder of 11 contains lens RNZ.It should be noted that Fig. 5 illustrates the lens RNZ varied in size of five section shapes,
But shape, number are not limited thereto.
It addition, as shown in Figure 4, in the lower side of lens barrel 11, it is provided with in the range of complete cycle from lens barrel 11
Periphery towards the teat 11t prominent with crisscross (in Fig. 4 for X/Y plane direction) that optical axis direction JD intersects, as it is shown in figure 5,
When assembling lens driver 101, this teat 11t and lens keep the cylinder portion 12s of component 12 (the most described later
Bottom 12u) arranged opposite.Thus, even if because falling etc. and to upper side (the Z1 direction shown in Fig. 5 of lens barrel 11
Side) be applied with stronger impact in the case of, owing to teat 11t can abut with bottom 12u, also therefore be able to eliminate lens
The possibility that lens barrel 11 departs from upward.It should be noted that in first embodiment of the present invention, make teat 11t become
It is arranged on the structure in the range of complete cycle with ladder difference shape, but is not limited thereto, such as, a part can also be made prominent from periphery
Go out.At this point it is possible to arrange at least one place, it is preferably provided with more than at two.
It addition, as shown in Figure 4, at the outer peripheral face 11p of lens barrel 11, intersect with optical axis direction JD in the range of complete cycle
It is formed with groove portion 11u on direction, when being coated with binding agent, houses and filling adhesive in this groove portion 11u.Thereby, it is possible to
Outside more guaranteeing to be kept the cylinder portion 12s (rake 92 the most described later) of component 12 with lens barrel 11 by lens
The filling region of the binding agent that side face 11p is formed.Thereby, it is possible to improve lens to keep gluing between component 12 and lens barrel 11
Knotting strength, even if because falling etc. and in the case of lens driver 101 is applied with stronger impact, it is also possible to reliably
Lens barrel 11 is held in lens and keeps component 12.
Then, the lens to lens driver 101 keep component 12 to illustrate.(a) of Fig. 6 is from shown in Fig. 1
The lens that Z1 observes side keep the top perspective view of component 12, and (b) of Fig. 6 is the lens observed from the Z2 side shown in Fig. 1
Keep the lower section stereogram of component 12.Fig. 7 is to be shown in lens to keep being wound with on component 12 stereogram of the state of coil 33.
Fig. 8 is the amplification view of the portion P shown in Fig. 5 (a).It should be noted that for ease of understanding explanation, show in fig. 8
Meaning property illustrates adhesive layer AD.This adhesive layer AD is not shown in (a) of Fig. 5 and (b) of Fig. 5.
The lens of lens driver 101 keep component 12 by using liquid crystal polymer (LCP, Liquid Crystal
Etc. Polymer) synthetic resin carries out injection molded and makes, and as shown in Figure 6, these lens keep component 12 to be formed as tubular, and
Including have circle outer peripheral face 12m and the cylinder portion 12s of inner peripheral surface 12q and the outer peripheral face 12m from the lower end of cylinder portion 12s to
The flange part 12v that radial outside is prominent.And, lens barrel 11 keeps the lower side of component 12 to pass this 12s from lens
And lens holding component 12 it is held in by binding agent.
As shown in (a) of Fig. 6, in lens keep the cylinder portion 12s of component 12, upper end side the most to its upper is to installing
It is equipped with at two the pedestal portion 12d (pedestal portion at two of the Y-direction shown in (a) of Fig. 6) with concave depression.(a) such as Fig. 5
Shown in, this pedestal portion 12d is placed with the part of a side side of the upside leaf spring 16 as supporting member 6 (specifically
Part I 16a described later).It addition, as shown in (b) of Fig. 6, the bottom 12u being positioned at a bottom of portion 12s becomes plane,
When lens barrel 11 keeps the lower side of component 12 to pass from lens, the teat 11t of bottom 12u and lens barrel 11 is with energy
Enough modes abutted are opposed.Thus, even if as it has been described above, being applied with stronger because falling etc. to the upper side of lens barrel 11
Impact in the case of, owing to bottom 12u can abut with teat 11t, also therefore be able to eliminate lens barrel 11 upward
The possibility departed from.It should be noted that in first embodiment of the present invention, make bottom 12u become and put down with same
Face shape is arranged on the structure in the range of complete cycle, but is not limited thereto, such as, can also be configured to a part of bottom 12u
Highlighting downwards, this prominent part is opposed with the teat 11t of lens barrel 11.At this point it is possible to arrange at least one place, preferably set
Put more than at two.
As shown in Figure 6, on the outer peripheral face 12m of cylinder portion 12s, it is provided with the line from inner side supporting coil 33 at eight equably
Circle support 12j, and in the upper end side of this coil supports portion 12j, it is formed opposed with flange part 12v and outside to footpath everywhere
The eaves portion 12h that side is prominent.And, as it is shown in fig. 7, keep the outer peripheral face 12m side of component 12 at lens, by coil 33 to be supported on
Coil supports portion 12j and the mode of eaves portion 12h and flange part 12v of being held on are wound into octagon.
As shown in Figure 8, the inner peripheral surface 12q of cylinder portion 12s is provided with the location division of clearance constant with lens barrel 11
52 and be positioned at the upside of location division 52 and along with becoming big inclining with the gap-ratio location division 52 of lens barrel 11 upward
Tiltedly portion 92.And, when lens barrel 11 being held in lens and keeping component 12, between this rake 92 and lens barrel 11
Gap in reliably and adequately filling adhesive, by binding agent, lens barrel 11 is fixed on lens and keeps component 12.By
This, it is possible to increase lens keep the adhesion strength between component 12 and lens barrel 11.Thus, even if because falling etc. and to thoroughly
In the case of mirror drive 101 is applied with stronger impact, it is also possible to reliably keep lens barrel 11.
It addition, the material that material is polyamide (PA) and lens holding component 12 at lens barrel 11 is that liquid crystal gathers
In the case of compound (LCP), owing to the caking property of polyamide (PA) is generally preferable, therefore gather at the liquid crystal that caking property is poor
The lens of compound (LCP) keep arranging rake 92 on component 12.Thereby, it is possible to widen lens to keep the adhesive surface of component 12
Long-pending, it is possible to increase lens keep the adhesion strength of component 12, therefore, it is possible to strengthen lens keep component 12 and lens barrel 11 it
Between bonding.
Additionally, in first embodiment of the present invention, as shown in Figure 8, the border between location division 52 and rake 92
Position on the lower, the ratio centre position that portion (KP shown in Fig. 8) is positioned on the optical axis direction JD of a portion 12s.In other words, limit
Portion of boundary is positioned at position on the lower, the ratio centre position on the above-below direction (Z-direction shown in Fig. 8) of the inner peripheral surface 12q of a portion 12s
Put place.Thereby, it is possible to guarantee the filling region of the binding agent formed with lens barrel 11 by rake 92 more, it is possible to enter one
Step improves lens and keeps the adhesion strength between component 12 and lens barrel 11.Further, since it is above-mentioned at lens barrel 11
The groove portion 11u formed on outer peripheral face 11p is arranged on the position opposed with this rake 92, therefore, it is possible to reliable to groove portion 11u
And it is fully filled binding agent.
It addition, when lens barrel 11 being held in lens and keeping component 12, as shown in Figure 8, rake 92 is to comprise
In the section that the optical axis (central shaft of lens holding component 12) of lens RNZ and the plane along this optical axis are cut, there are two
From the straight line along optical axis direction JD formed by different the first rake 92a in angle i.e. inclination angle and the second rake 92b, second
The inclination angle than the first rake 92a, the inclination angle of rake 92b is big.It should be noted that first embodiment party of the present invention
In formula, the periphery due to lens barrel 11 is consistent with the straight line along optical axis direction JD, the most also by outside with lens barrel 11
Week, formed angle was referred to as inclination angle.
It addition, bigger the second rake 92b in this inclination angle and the first rake 92a compares and is disposed in lens and keeps component
The upper side of the inner peripheral surface 12q of 12, from this easy filling adhesive in the second rake 92b side, thus the second rake 92b with
And first reliably and adequately be filled with binding agent between rake 92a and lens barrel 11.Thereby, it is possible at the second rake
92b side forms the adhesive layer AD widened, it is possible to improves lens further and keeps the bonding between component 12 and lens barrel 11
Intensity.The section shape being particularly due to adhesive layer AD becomes the wedge-type shape widened upward, is therefore configured to executed
In the case of adding the strongest power, lens barrel 11 is not easy to depart from downwards.
As shown in (b) of Fig. 6, keep the flange part 12v of component 12 at lens, be provided with at two and dash forward downwards from its bottom surface
The portion that the projects 12t of the constraint portion 12k of the square convex gone out and everywhere circular convex.With coil 33 on this constraint portion 12k
Winding starts and winding terminates the both end sides that constraint accordingly has the wire of coil 33.It addition, project portion 12t fix conduct at this
Part (the Part III the most described later of the one side side of the downside leaf spring 26A and downside leaf spring 26B of supporting member 6
26c)。
Then, drive mechanism M3 of lens driver 101 is illustrated.(a) of Fig. 9 is from the Z1 side shown in Fig. 1
The top perspective view of the yoke 34 in drive mechanism M3 observed, (b) of Fig. 9 is the yoke 34 observed from the Z2 side shown in Fig. 1
Lower section stereogram.Figure 10 is that the lens eliminating the lens barrel 11 shown in Fig. 2 (a) and yoke 34 (drive mechanism M3) drive
The stereogram of dynamic device 101.
As it has been described above, drive mechanism M3 of lens driver 101 possesses and is wound into the ring-type coil of octagon 33, doubles as
The outside rectangle of housing and the yoke 34 of box like and four magnet 35 of the four opposed arrangings in limit with coil 33.And, drive machine
Structure M3 utilizes and constitutes magnetic circuit at the electric current of coil 33 flowing and the magnetic produced from magnet 35, and makes lens keep component 12 along light
Direction of principal axis JD moves up and down.
First, as shown in Fig. 1 and Fig. 7, coil 33 shape in the form of a ring of drive mechanism M3 and there is octagonal angle,
Formed by coiled electrical conductor.It should be noted that in Fig. 1 and Fig. 7, wire is covered surface by insulating component sometimes, save
The detailed reeling condition of wire is slightly shown.It addition, as it is shown in fig. 7, coil 33 is disposed in the cylinder portion 12s that lens keep component 12
The position that surrounds of surrounding, it is when being supported from inner side by coil supports portion 12j (with reference to Fig. 6), by coil 33
A part is held on eaves portion 12h and flange part 12v, and is fixed on the upper surface of flange part 12v.It is additionally, since coil 33
Inner peripheral surface 33u by coil supports portion 12j isotropism and supports with all claiming, and therefore keeps structure with the central shaft of coil 33 with lens
The state that the central shaft of part 12 is consistent is held in lens holding component 12.Thus, easily make to be held in lens and keep component 12
The optical axis of the lens RNZ of lens barrel 11 is consistent with the central shaft of lens holding component 12.
Then, by the sheet material of the soft-magnetic body materials such as iron is implemented punch process, drawing processing makes drive mechanism
The yoke 34 of M3, as it is shown in figure 9, profile is formed as the box like with resettlement section 34s.And, yoke 34 have outside in the form of a ring outside
Flat upper surface part 34B that the upper end (the Z1 side shown in Fig. 9) of yoke 34A and outer yoke 34A is arranged continuously, from upper surface part
Four interior yoke 34C that a part of 34B (the Z2 direction shown in Fig. 9) downwards is extended.It addition, be formed with interior yoke 34C
Four angles on, be provided with compared with upper surface part 34B be positioned at lower section ladder poor portion 34D.As shown in (a) of Fig. 2, this knot
The yoke 34 of structure lens keep component 12 and coil 33 (not shown) are contained in resettlement section 34s and cover after with pedestal structure
Part 18 engages, and constitutes profile together with base component 18.
As shown in (a) of Fig. 3, the outer yoke 34A of yoke 34 is rectangular under top view.It addition, as shown in (a) of Fig. 3, yoke
The interior yoke 34C of 34 in arc-shaped, and equally spaced joins under top view in the way of opposed with four edge of outer yoke 34A
If.Although it addition, illustrate the most in detail, but when assembling lens driver 101, interior yoke 34C keeps structure respectively along lens
The periphery of the cylinder portion 12s of part 12 and arrange, and opposed with the inner peripheral surface 33u of coil 33 and arrange.Additionally, interior yoke 34C is respectively
The position the most opposed with magnet 35 it is disposed in across coil 33.It should be noted that make being processed by drawing
During yoke 34, owing to the interior yoke 34C of yoke 34 is arc-shaped, therefore, it is possible to easily carry out drawing processing.Therefore, it is possible to improve yoke 34
The shape of interior yoke 34C and the positional precision of arranging.
Finally, as it is shown in figure 1, the trapezoidal shape of section shape of the magnet 35 of drive mechanism M3 and have flat outside
Shape, four magnet 35 are positioned at the outside of coil 33, and are disposed in equably on four angles of yoke 34.It addition, the ladder of magnet 35
Two lateral surfaces of the inclination in shape shape form the shape along outer yoke 34A.Therefore, when assembling lens driving device 101,
The two lateral surface can press on outer yoke 34A configure, it is possible to easily carry out the location of magnet 35.And, such as Fig. 5
B, shown in (), magnet 35 clamps a part for supporting member 6 (upside leaf spring 16) between the ladder difference portion 34D of yoke 34, and borrows
Binding agent is helped to be fixed on yoke 34.
Then, the supporting member 6 of lens driver 101 is illustrated.Supporting member 6 is illustrated by Figure 11
Figure, (a) of Figure 11 is the top view of the upside leaf spring 16 as supporting member 6, and (b) of Figure 11 is as supporting member 6 times
Side plate spring 26A and the top view of downside leaf spring 26B.
The supporting member 6 of lens driver 101 is made by with the metallic plate that copper alloy is main material, such as Figure 10 institute
Show, be included in lens and keep the upside leaf spring 16 of arranging between component 12 and yoke 34 and keep component 12 and pedestal structure at lens
Two downsides leaf spring (26A, 26B) arranged between part 18.And, make lens keep component 12 and each supporting member 6 (upside
Leaf spring 16, downside leaf spring 26A, downside leaf spring 26B) engaging, thus lens keep component 12 be supported in the air, so that lens
Keep component 12 can move along optical axis direction JD (Z-direction shown in Fig. 2).It should be noted that due to downside leaf spring 26A with
And leaf spring 26B both end sides with coil 33 respectively in downside electrically connects, therefore it is also act as the power supply component to coil 33 power supply.
First, as shown in (a) of Figure 11, the upside leaf spring 16 of supporting member 6 in the form of a substantially rectangular, and has and is fixed on lens
Keep component 12 two at Part I 16a, clamped with magnet 35 by yoke 34 and fixed the 16b of Part II everywhere, be positioned at
Elastic everywhere wrist 16g between Part I 16a and Part II 16b and Part II 16b everywhere is connected with each other
Crossbeam portion 16r.
And, when upside leaf spring 16 is assembled in lens driver 101, as shown in Figure 10, Part I 16a is carried
It is placed in lens and keeps the pedestal portion 12d of component 12, and fix Part I 16a and pedestal portion 12d by binding agent, thus will
One side side of upside leaf spring 16 is fixed on lens and is kept component 12.It addition, as shown in (b) of Fig. 5, Part II 16b and magnet
The upper surface of 35 abuts and is clamped between yoke 34, thus the opposing party side of fixed upper leaf spring 16.
It addition, as shown in (a) of Figure 11, upside leaf spring 16 is configured to the shape that substantial line is symmetrical, and at Part I 16a
Two at impartial position be fixed on lens and keep component 12, and be fixed in the position impartial everywhere of Part II 16b
The yoke 34 formed as one with base component 18.Thus, lens can be kept component 12 to be supported on all claiming by upside leaf spring 16
In the air.
As shown in (b) of Figure 11, downside leaf spring (16A, 16B) the respective inner shape semicircular in shape shape of supporting member 6,
And there is the Part IV everywhere that the 26c of Part III everywhere keeping component 12 to engage with lens engages with base component 18
26d, elastic everywhere wrist 26g between Part III 26c with Part IV 26d, by two at Part III 26c be connected
Two the first linking part 26p and two the second linking part 26q that Part IV 26d at two is connected.
And, when on the downside of by this, leaf spring (26A, 26B) is assembled in lens driver 101, saturating shown in (b) of Fig. 6
Mirror keeps four of component 12 to project the Part III that portion 12t is passed through the downside leaf spring (26A, 26B) shown in (b) of Figure 11
26c arrange through hole 26k and be fitted.Thus, a side side of downside leaf spring 26A and downside leaf spring 26B is positioned
Mirror keeps component 12 and is fixed on lens holding component 12.It should be noted that now, what lens kept component 12 projects portion
12t implements hot ca(u)lk, thus downside leaf spring 26A and downside leaf spring 26B is fixed on lens more reliably and keeps component 12.
On the other hand, base component 18 described later upper surface arrange the portion that projects 18t be passed through downside leaf spring (26A,
Through hole 26m (with reference to (b) of Figure 11) that Part IV 26d 26B) is arranged and be fitted.Thus, by downside leaf spring 26A with
And the opposing party side of downside leaf spring 26B is positioned base component 18 and is fixed on base component 18.
It addition, as shown in (b) of Figure 11, downside leaf spring 26A and downside leaf spring 26B is configured to the shape that substantial line is symmetrical,
It is connected with lens holding component 12 in the position impartial everywhere of Part III 26c, and the most equal at Part IV 26d
Deng position be connected with base component 18.Thereby, it is possible to all claim ground to keep component 12 to be supported in the air on lens.Therefore, profit
By the supporting member 6 (upside leaf spring 16, downside leaf spring 26A and downside leaf spring 26B) constituted as described above, lens are kept
Component 12 supports as can move along optical axis direction JD.
Finally, the fixed mechanism R8 of lens driver 101 is illustrated.(a) of Figure 12 is the base of fixed mechanism R8
The stereogram of seat component 18, (b) of Figure 12 is assembled with downside leaf spring 26A and downside leaf spring 26B on base component 18
Stereogram.
The fixed mechanism R8 of lens driver 101 has the Part II to the opposing party side as upside leaf spring 16
The yoke 34 (also comprising magnet 35) that 16b is fixed and the 4th to the opposing party side as downside leaf spring (26A, 26B)
Divide the base component 18 that 26d is fixed.Here, about the fixed mechanism R8 of upside leaf spring 16, using also as drive mechanism M3
Yoke 34 be illustrated, description will be omitted, only illustrates the fixed mechanism R8 of downside leaf spring (26A, 26B).
The base component 18 of fixed mechanism R8 is by using the liquid crystal polymer synthetic resin such as (LCP) to carry out injection molded
Making, as shown in Fig. 1 and Figure 12, profile is configured to the plate-like shape of rectangle, and is being centrally formed the opening 18k of circle.
It addition, be provided with prominent upward four on four angles of the upper surface of base component 18 to project portion 18t.And,
The portion that the projects 18t that the upper surface of base component 18 is arranged is passed through passing through of the Part IV 26d setting of downside leaf spring (26A, 26B)
Through hole 26m (with reference to (b) of Figure 11), thus through hole 26m is chimeric with projecting portion 18t.It should be noted that now, to base
The portion that the projects 18t of seat component 18 applies hot ca(u)lk, thus is fixed on by downside leaf spring 26A and downside leaf spring 26B more reliably
Base component 18.
As shown in (b) of Fig. 5, it is made up of the metallic plate using the materials such as copper, iron or the alloy with them as main component
Terminal 7 be embedded in base component 18 by insert part forming.And, two terminals 7 (terminal 7A and the terminal of electric insulation
7B) electrically connect with the not shown substrate being provided with imaging apparatus respectively, enable to power from these two terminals 7.And,
The terminal 7A of one side of terminal 7 electrically connects with downside leaf spring 26A, and the terminal 7B of the opposing party of terminal 7 and downside leaf spring 26B electricity
Connect, it is possible to make electric current flow to coil from this terminal 7A and terminal 7B via downside leaf spring 26A and downside leaf spring 26B
33。
It addition, as it is shown in figure 5, be made up of the metallic plate using the materials such as copper, iron or the alloy with them as main component
Connecting elements 57 be embedded in by insert part forming in base component 18 with terminal 7, as it is shown on figure 3, at yoke 34 identically
A part for connecting elements 57 is exposed at four angles.And, at the outer circumferential side by the inwall of the outer yoke 34A of yoke 34 Yu base component 18
After face is combined and is positioned, the seam between the position everywhere connecting elements 57 and four angles of yoke 34 to base component 18
Divide and weld, thus yoke 34 is fixed on base component 18.
Below to the effect one in the lens driver 101 of first embodiment of the present invention constituted as described above
Rise and illustrate.
The lens driver 101 of first embodiment of the present invention keeps the inner circumferential of the cylinder portion 12s of component 12 at lens
Location division 52 and rake 92 it is provided with on the 12q of face, so that between lens keep producing between component 12 and lens barrel 11
Gap, it is possible to reliably and adequately make binding agent be filled in lens and keeps the gap between component 12 and lens barrel 11.Cause
This, it is possible to increase lens keep the adhesion strength between component 12 and lens barrel 11.Thus, even if because falling etc. and to thoroughly
In the case of mirror drive 101 is applied with stronger impact, it is also possible to reliably keep lens barrel 11.
It addition, in the middle of the ratio that the boudary portion between location division 52 and rake 92 is on the optical axis direction JD of cylinder portion 12s
Position on the lower, position, therefore, it is possible to guarantee the filling of the binding agent formed with lens barrel 11 by rake 92 more
Region.Thereby, it is possible to improve lens further to keep the adhesion strength between component 12 and lens barrel 11, even if because falling
Deng and in the case of lens driver 101 is applied with stronger impact, it is also possible to more reliably keep lens barrel 11.
It addition, rake 92 has the first rake 92a and inclination angle second rake bigger for rake 92a than first
92b, and in the second rake 92b, it is filled with binding agent, therefore, it is possible to guarantee more by rake 92 and lens barrel 11
The filling area level of the binding agent formed, and can form, in the second rake 92b side, the adhesive layer AD widened.Therefore,
Lens can be improved further and keep the adhesion strength between component 12 and lens barrel 11, and especially adhesive layer AD is
Wedge shape, it is possible to make lens barrel 11 be not easy side from below and depart from.Thus, even if because falling etc. and to lens driver
In the case of 101 are applied with stronger impact, it is also possible to keep lens barrel 11 more reliably.
It addition, arrange the teat 11t that oriented and that optical axis direction JD intersects outer circumferential side is prominent in the bottom of lens barrel 11,
Teat 11t and lens keep the bottom 12u of the cylinder portion 12s of component 12 arranged opposite, so even because of fall etc. and to thoroughly
In the case of the upper side of mirror lens barrel 11 is applied with stronger impact, owing to teat 11t can abut with bottom 12u, therefore
It also is able to eliminate the possibility that lens barrel 11 departs from upward.
It addition, be formed with groove portion 11u on the outer peripheral face 11p of lens barrel 11, therefore fill bonding to this groove portion 11u
Agent such that it is able to guarantee more to be kept the rake 92 of component 12 to be formed by the outer peripheral face 11p of lens barrel 11 with lens
The filling region of binding agent.Thereby, it is possible to the adhesion strength improved further between lens barrel 11 and lens holding component 12,
Even if because falling etc. and in the case of lens driver 101 is applied with stronger impact, it is also possible to utilize lens to keep
Component 12 keeps lens barrel 11 more reliably.
It should be noted that the invention is not limited in above-mentioned embodiment, such as, can be deformed as follows
Implementing, above-mentioned embodiment falls within the technical scope of the present invention.
<variation 1><variation 2>
Figure 13 is the stereogram that the lens illustrating variation 1 keep component C12.At above-mentioned first embodiment
In, it is preferably configured as, the first rake is set in the range of the complete cycle of the inner peripheral surface 12q of the cylinder portion 12s of lens holding component 12
92a and the second rake 92b, but be not limited thereto.Such as, as shown in figure 13, it is also possible to be configured to only keep at lens
A part of the inner peripheral surface 12q of component 12 arranges the second rake C92b.It addition, although it is not shown, it may also be only formed
There is the rake (variation 2) of the first rake.
<variation 3>
In the above-described first embodiment, in the way of a circle, the groove portion of lens barrel 11 is defined by circumferentially face 11p
11u, but be not limited thereto can be such as ring-type and has multiple shapes, it is also possible to is spiral-shaped.Additionally, it is possible to
Being not along the direction intersected with optical axis direction JD along the cannelure of optical axis direction JD.
The invention is not limited in above-mentioned embodiment, can suitably carry out without departing from the range of the purpose of the present invention
Change.
Claims (7)
1. a lens driver, it possesses:
The lens of tubular keep component, and it can keep arranging lensed lens barrel；
Supporting member, these lens are kept member supporting for can move along optical axis direction by it；And
Drive mechanism, its make described lens keep component move up and down along described optical axis direction,
Described lens driver is characterised by,
The inner peripheral surface in the cylinder portion of the described lens holding component passed for described lens barrel is provided with location division and inclination
Portion, the clearance constant between described location division and described lens barrel, described rake is positioned at the upside of described location division, and
Along with upward, for the gap between described location division and described lens barrel, described rake is with described
Gap between mirror lens barrel becomes big,
At least filling adhesive between described rake and described lens barrel, by this binding agent, described lens barrel is solid
Component is kept due to described lens.
Lens driver the most according to claim 1, it is characterised in that
The boudary portion between described location division and described rake ratio interposition on the described optical axis direction of cartridge
Rest against the position of downside.
Lens driver the most according to claim 1, it is characterised in that
Described rake have the first rake and the second rake, described first rake and described second rake each with
It is different along i.e. inclination angle, angle formed by the straight line of described optical axis direction,
The described inclination angle of described second rake is bigger than the described inclination angle of described first rake,
Described second rake is disposed in the position of the upper side keeping component than described first rake by described lens,
Fill out between described second rake and described lens barrel and between described first rake and described lens barrel
It is filled with described binding agent.
Lens driver the most according to claim 2, it is characterised in that
Described rake have the first rake and the second rake, described first rake and described second rake each with
It is different along i.e. inclination angle, angle formed by the straight line of described optical axis direction,
The described inclination angle of described second rake is bigger than the described inclination angle of described first rake,
Described second rake is disposed in the position of the upper side keeping component than described first rake by described lens,
Fill out between described second rake and described lens barrel and between described first rake and described lens barrel
It is filled with described binding agent.
Lens driver the most according to any one of claim 1 to 4, it is characterised in that
In the lower side of described lens barrel, it is provided with the teat prominent from the direction that outer circumferential and described optical axis direction intersects,
This lens barrel side from below keeps under the cartridge of component, and described teat and cartridge through described lens
End is arranged opposite.
Lens driver the most according to claim 5, it is characterised in that
The outer peripheral face of described lens barrel is formed the groove portion that can house described binding agent.
Lens driver the most according to any one of claim 1 to 4, it is characterised in that
The outer peripheral face of described lens barrel is formed the groove portion that can house described binding agent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015026669A JP2016148812A (en) | 2015-02-13 | 2015-02-13 | Lens drive device |
| JP2015-026669 | 2015-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105891999A true CN105891999A (en) | 2016-08-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610082083.2A Pending CN105891999A (en) | 2015-02-13 | 2016-02-05 | Lens drive device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2016148812A (en) |
| CN (1) | CN105891999A (en) |
Cited By (2)
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| CN107683429A (en) * | 2015-06-11 | 2018-02-09 | 三美电机株式会社 | Lens driver, camara module and camera carrying device |
| CN111492285A (en) * | 2017-12-19 | 2020-08-04 | 阿尔卑斯阿尔派株式会社 | Lens driving device, camera module, and method for manufacturing lens driving device |
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| US11089189B2 (en) | 2017-09-12 | 2021-08-10 | Huawei Technologies Co., Ltd. | Camera module and terminal |
| JP7231820B2 (en) * | 2018-12-14 | 2023-03-02 | ミツミ電機株式会社 | LENS DRIVING DEVICE, CAMERA MODULE, AND CAMERA MOUNTING DEVICE |
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|---|---|
| JP2016148812A (en) | 2016-08-18 |
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Address after: Tokyo, Japan, Japan Applicant after: Alpine Alpine Company Address before: Tokyo, Japan, Japan Applicant before: Alps Electric Co., Ltd. |
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Application publication date: 20160824 |