CN102789038A - Lens drive device - Google Patents
Lens drive device Download PDFInfo
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- CN102789038A CN102789038A CN201210135230XA CN201210135230A CN102789038A CN 102789038 A CN102789038 A CN 102789038A CN 201210135230X A CN201210135230X A CN 201210135230XA CN 201210135230 A CN201210135230 A CN 201210135230A CN 102789038 A CN102789038 A CN 102789038A
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Abstract
The invention provides a lens drive device which can maintain the push force and linearity of a lens retaining component even if the width of a coil is reduced. The lens drive device comprises a lens retaining component (5) for retaining a lens body, a coil (59) which is disposed on the lens retaining component (5) and forms a gap with the outer circumferential face (68) of an optical axis of the lens retaining component (5), a yoke part (7) which includes an outer wall part (73) encircling the outer side of the coil (59) and an inner wall part (74), where the gap of the inner side of the coil (59) is disposed opposite to the outer wall part (73), and a magnet (6) which forms a magnetic circuit acting on the coil (59) with the yoke part (7). The outer circumferential face (68) of the lens retaining component (5) is provided with a flange part (53) which is opposite to the end part of the inner wall part (74) in the direction of the optical axis. The flange part (53) is provided with an avoiding part (55) where an end part of the inner wall part (74) can enter.
Description
Technical field
The present invention relates to the micro objective drive unit installed on a kind of mobile phone at subsidiary camera etc.
Background technology
As the micro objective drive unit, known a kind of lens holding member that will keep lens was to optical axis direction magnetic device driven (for example with reference to patent documentation 1) in the past.The lens driver that patent documentation 1 is put down in writing has at substrate parts uploads the structure of putting lens holding member that coil is housed and covering yoke portion from upside.The lens holding member have the cylindrical portion of inboard fixed lens unit and from the bottom of cylindrical portion outwards outstanding flange part.On the flange part of lens holding member, vacate the interval with respect to the outer peripheral face of cylindrical portion coil has been installed.
Yoke portion has periphery wall portion that surrounds the coil radial outside and the internal perisporium portion that surrounds the coil radially inner side, and periphery wall portion and internal perisporium portion connect to the shape that the cross section is the U word through upper wall portions.Periphery wall portion inner face in yoke portion has been fixed magnet mutually opposed to each other with internal perisporium portion and coil.And lens driver forms magnetic circuit through yoke portion and magnet, and through the electromagnetic force that energising produced of coil the lens holding member is moved to optical axis direction.
Patent documentation 1: (Japan) spy opens the 2010-191130 communique
But, along with the miniaturization of electronic equipment, require lens driver to realize slimming more, estimate wide will the narrowing down of volume of coil from now on.For this reason, appropriate thrust is provided, is necessary to make coil in parallel magnetic field, to produce electromagnetic force in order to give the lens holding member.But in the said lens drive unit, consider the interference between the flange part of inner wall part and lens holding member of yoke portion, fail to make inner wall part to cooperate that the volume of coil is wide guarantees enough length.Thereby, can not make magnetic field act on coil equably through inner wall part and magnet, the thrust of lens holding members and the problem that the linearity reduces have appearred.
Summary of the invention
The present invention proposes in view of the above-mentioned truth of technology in the past, and its purpose is to provide a kind of lens driver that can keep the thrust and the linearity of lens holding member.
The present invention's lens driver is characterised in that to possess: the lens holding member can keep phacoid; Coil is installed on the said lens holding member, and forms the gap between the outer peripheral face around the optical axis of said lens holding member; Yoke portion has the outside wall portions that surrounds the above-mentioned coil outside and at above-mentioned coil inboard above-mentioned gap and the opposed inner wall part of above-mentioned outside wall portions; And magnetic part, form the magnetic circuit that acts on above-mentioned coil with above-mentioned yoke portion, and,
Outer peripheral face at the said lens holding member forms flange part with optical axis direction below above-mentioned coil, and is provided with the portion that dodges of the end entering that can make above-mentioned inner wall part at this flange part.
According to said structure,, when driving lens driver, avoid the inner wall part of yoke portion and the interference between the flange part through the portion that dodges that on the flange part of lens holding member, forms.Thereby, can extend the inner wall part of yoke portion, and when driving lens driver, can make magnetic field act on coil equably along optical axis direction.Therefore, even the volume width of coil is narrow, also can keep the thrust and the linearity of lens holding member.
And at said lens drive unit of the present invention, the above-mentioned portion that dodges forms through run through above-mentioned flange part with optical axis direction.According to this structure, when driving lens driver, can make the portion of dodging insert the inner wall part of logical yoke portion, thereby can form longer inner wall part.
Also have the present invention in the said lens drive unit, the above-mentioned portion of dodging forms and makes the claw of supporting above-mentioned coil to twine the anchor clamps of said lens holding member can insert logical.According to this structure, when coil twines the lens holding member, the function that the claw that the portion of dodging is had make anchor clamps is inserted logical inserting hole.Thereby, with through insert the state of logical claw supporting coil in the portion of dodging, can coil be wrapped on the lens holding member, it is lax to prevent that coil from twining.
And; The present invention is in the said lens drive unit; The chassis that on the substrate that has mounted imaging apparatus, has possessed supporting said lens holding member, and on the carrying plane of the support said lens holding member on above-mentioned chassis, form the said lens body is exposed the peristome of imaging apparatus and surrounds the ring-type convex shaped part of above-mentioned peristome in the inboard of above-mentioned flange part.According to this structure, even foreign matter passes the gap between the outer peripheral face of coil and lens holding member, the portion of dodging through flange part gets in the lens driver again, also can prevent that foreign matter from getting into the peristome side through the ring-type convex shaped part that is arranged on around the peristome.Therefore, foreign matter can not get on the component side of the imaging apparatus that is positioned at peristome.
According to the present invention, can keep the thrust and the linearity of lens holding member.
Description of drawings
Fig. 1 is the stereographic map of the whole embodiment of the lens driver that arrives involved in the present invention.
Fig. 2 is the exploded perspective view of the lens driver that this embodiment is involved.
Fig. 3 is the inner wall part of the lens driver that this embodiment is involved to be described and to be dodged the transverse sectional view that concerns between the portion.
Fig. 4 is the inner wall part of the lens driver that this embodiment is involved to be described and to be dodged the longitudinal sectional view that concerns between the portion.
Fig. 5 does, representes the figure that concerns between stroke and the electric current of the lens driver that this embodiment is involved.
Fig. 6 is that the figure of the assembling operation first half of the lens driver that this embodiment is involved is described.
Fig. 7 is that the figure of the assembling operation latter half of the lens driver that this embodiment is involved is described.
Fig. 8 is to represent that the coil of the lens driver that this embodiment is involved twines the figure of state.
Fig. 9 is the action specification figure of the lens driver that this embodiment is involved.
Mark among the figure
1 lens driver, 2 chassis, 3 outside terminals, 4 times leaf springs, 5 lens holding members, 6 magnet (magnetic part); 7 yoke portions, leaf spring on 8,9 top covers, 21 peristomes, 22 ring-type convex shaped parts, 28 carrying planes; 52 cylindrical portion, 53 flange parts, 54 coil supports portions, 55 dodge portion, 59 coils, 67 pole surfaces; 68 outer peripheral faces, 71 upper wall portions, 73 periphery wall portions (outside wall portions), 74 inner wall parts, 95 anchor clamps, 96 claws
Embodiment
Specify embodiment of the present invention below with reference to accompanying drawings.In addition, following lens driver is merely an example, and the present invention is not limited to this embodiment.
Fig. 1 is the overall perspective view of the involved lens driver of this embodiment.Fig. 2 is the exploded perspective view of the involved lens driver of this embodiment.
Like Fig. 1 and shown in Figure 2; Lens driver 1 is installed on the substrate; Be pasted with imageing sensor as imaging apparatus (not expression among the figure) on this substrate, and drive phacoid (not expression among the figure) with respect to imageing sensor to optical axis direction and adjust focal length.In lens driver 1, on the chassis 2 that outside terminal 3 has been installed, lens holding member 5 has been installed across following leaf spring 4.Winding around 59 around lens holding member 5, and on chassis 2, fix the yoke portion 7 of attaching magnet 6, this yoke portion 7 covers these coils 59.On the upper surface of yoke portion 7 across on leaf spring 8 top cover 9 has been installed.
And, on chassis 2, embed shaping conductive metal plate 25.Sheet metal 25 2 exposes a part from the chassis, and is electrically connected with yoke portion 7.Be formed for installing a pair of mounting hole 26 and the lug boss 27 of pair of outer terminal 3 around 2 adjacent corners of 2 on the chassis.Part bending through with the conductive metal plate forms pair of outer terminal 3.Outside terminal 3 to be inserting the side plate bent and to make lug boss 27 from the outstanding state of the inserting hole that forms at flat part 31 in mounting hole 26, the hot riveting through lug boss 27 is fixed on the chassis 2.
Following leaf spring 4 is waited by the electric conductivity phosphor bronze and forms, and is made up of a pair of spring leaf 41.A pair of spring leaf 41 is configured to along the chassis 2 ring-type convex shaped part 22 and forms opening in central authorities.Each spring leaf 41 has: the spring board 44 that is positioned at the tortuous shape of the outside board 42 of radial outside, the inboard board 43 that is positioned at radially inner side and connection outside board 42 and inboard board 43.The lug boss 24 for chassis 2 forms inserting hole 46 on the side plate 42 outside, and the lug boss 56 (with reference to Fig. 6 D) corresponding to lens holding member 5 on inboard board 43 forms inserting hole 45.
Outside board 42 makes the lug boss 24 on chassis 2 outstanding from inserting hole 46, and is fixed on the chassis 2 through the hot riveting of lug boss 24.Inboard board 43 makes the lug boss 56 of lens holding member 5 outstanding from inserting hole 45, and is fixed on the lens holding member 5 through the hot riveting of lug boss 56.As stated, chassis 2 is bonded through following leaf spring 4 with lens holding member 5.In addition, the spring board 44 of each spring leaf 41, to chassis 2 sides to lens holding member 5 application of forces.And a pair of spring leaf 41 is electrically connected with pair of outer terminal 3 respectively, but also is electrically connected with the end of coil 59.
On flange part 53, form the portion that dodges 55 of breach corresponding to the inner wall part of yoke portion 7 74.Dodge portion 55 through this, when lens holding member 5 when move the top, prevent bottom and the interference between the flange part 53 of the inner wall part 74 of yoke portion 7.Be formed for a pair of kinking pin 57 (with reference to Fig. 6 D) at both ends of a plurality of lug bosses 56 and the winding around 59 of fixing leaf spring 4 down in the bottom of lens holding member 5.One end of coil 59 is connected with a side spring leaf 41 with the state that is wrapped on the side kinking pin 57, and the other end of coil 59 is connected with opposite side spring leaf 41 with the state that is wrapped on the opposite side kinking pin 57.And, in 4 foots 58 of the bottom of lens holding member 5 formation with chassis 2 butts.
And, form magnetic circuit through yoke portion 7 with magnet 6, and, drive lens holding member 5 to optical axis direction through to coil 59 energisings.And, form the edge part 75 that engages with the sheet metal 25 on chassis 2 in the bottom of yoke portion 7.In 4 corners of the upper wall portions 71 of yoke portion 7, form the inserting hole 76 of the installation usefulness of top cover 9.
Top cover 9 is formed rectangular box-like by synthetic resin.4 corners of top cover 9 form from lower surface outstanding on the lug boss 91 of fixedly usefulness of leaf spring 8.Top cover 9 is inserted logical state with lug boss 91 at the notch part 85 of last leaf spring 8 and the inserting hole 76 of yoke portion 7, through the hot riveting of lug boss 91, becomes one with last leaf spring 8 and yoke portion 7.In addition, about the detailed assembling operation of lens driver 1 with after state.
To the inner wall part and the relation of the position between the lens holding member of yoke portion be described with reference to Fig. 3 and Fig. 4 below.Fig. 3 is the inner wall part of the involved lens driver of this embodiment of explanation and dodges the transverse sectional view that concerns between the portion.Fig. 4 is the inner wall part of the involved lens driver of this embodiment of explanation and dodges the longitudinal sectional view that concerns between the portion.In addition, Fig. 4 A is the longitudinal sectional view of the involved lens driver of this embodiment, and Fig. 4 B is the longitudinal sectional view of the involved lens driver of comparative example.And the main difference part of the lens driver that the lens driver that comparative example is involved and this embodiment are involved is that the former does not have the portion of dodging.
Shown in Fig. 3 and Fig. 4 A, it is the periphery wall portion 73 of rectangular shape that yoke portion 7 has when surrounding the overlooking of lens holding member 5, and magnet 6 is installed in 4 corners of surrounding wall portion 73 respectively outside.And, in yoke portion 7, forming inner wall part 74, this inner wall part 74 is mutually opposed across the interval with the magnet 6 that 4 corners of surrounding wall portion 73 outside are provided with.It is the shape of U font that inner wall part 74 connects to when analysing and observe through upper wall portions 71 with periphery wall portion 73.Through this magnet 6, upper wall portions 71, periphery wall portion 73 and inner wall part 74, form magnetic circuit in 4 corners of lens driver 1.
And the inner wall part 74 of yoke portion 7 is inserted logical in the outer peripheral face 68 and the gap between the coil 59 of the cylindrical portion 52 of lens holding member 5.According to this structure, coil 59 is located between the inner face 77 of pole surface 67 and inner wall part 74 of magnet 6, and the energising through coil 59 makes lens holding member 5 move to optical axis direction.
And, on the flange part 53 of lens holding member 5, form the portion 55 that dodges corresponding to inner wall part 74.Dodge portion 55 and be formed on the optical axis direction and opposed position, the bottom of inner wall part 74, and can insert logical inner wall part 74.That is, the portion that dodges 55 of exposing in coil 59 inboards forms the width dimensions of the size of long side direction greater than inner wall part 74, and forms the gauge of the size of short side direction greater than inner wall part 74.
According to said structure, even lens holding member 5 moves up, also dodge in the portion 55 because of the bottom of inner wall part 74 gets into, the bottom of inner wall part 74 not can with flange part 53 butts.In this embodiment, because adopted the structure that can avoid interference between inner wall part 74 and the flange part 53, thus extended the length of inner wall part 74 at optical axis direction, thus the parallel magnetic field range L between inner wall part 74 and the magnet 6 enlarged.Therefore, when driving lens holding member 5, make magnetic field act on coil 59 equably, thereby make lens holding member 5 produce enough thrust along optical axis direction.
On the other hand, shown in Fig. 4 B, on the flange part 102 of the involved lens driver 101 of comparative example, do not form the portion that dodges corresponding to inner wall part 103.In the involved lens driver 101 of comparative example, consider inner wall part 103 and the interference between the flange part 102 when driving lens holding member 105, form inner wall part 103 at optical axis direction shortly.Therefore, the parallel magnetic field range L between inner wall part 103 and the magnet 106 diminishes, and when driving lens holding member 105, can not make magnetic field act on coil 107 equably along optical axis direction.Especially, when beginning to drive lens holding member 105, the bottom of coil 107 is outstanding from the gap between magnet 106 and the inner wall part 103, the magnetic field that acts on coil 107 very a little less than, therefore can not make lens holding member 105 produce sufficient thrust.
Then, will the amount of movement of the lens driver that this embodiment is involved and the relation between the electric current be described with reference to Fig. 5.Fig. 5 is the amount of movement of the involved lens driver of this embodiment of expression and the figure of the relation between the electric current.In addition, in Fig. 5, represent the characteristic of the lens driver that this embodiment is involved, dot the characteristic of the involved lens driver of comparative example with solid line.
Shown in the solid line of Fig. 5, in the involved lens driver 1 of this embodiment, when giving coil 59 energisings, see number " mA " originally, lens holding member 5 mobile receives the application of force of leaf spring 8 and time leaf spring 4 and is suppressed.When further switching on for coil 59, lens holding member 5 just begins to move.Lens holding member 5 begin to move to stop to move between because coil 59 continues in the parallel magnetic field range L between inner wall part 74 and magnet 6, so coil 59 receives the effect of uniform magnetic field.Thereby can guarantee the linearity between the amount of movement of the electric current of coil 59 and lens holding member 5.
Shown in Fig. 5 dotted line, in the involved lens driver 101 of comparative example, when giving coil 107 energisings, see number " mA " originally, promptly lens holding member 105 mobile receives the application of force of leaf spring 108 and time leaf spring 104 and is suppressed.When further switching on for coil 107, lens holding member 105 just begins to move, and is when still beginning to move, outstanding outside the parallel magnetic field range L of the part of coil 107 between inner wall part 103 and magnet 106.For this reason, can not make magnetic field act on coil 107 equably, compare with the lens driver 1 that this embodiment is involved, for the electric current of coil 107, the amount of movement of lens holding member 105 slowly changes.Therefore, in the involved lens driver 101 of comparative example, can not guarantee the linearity between the amount of movement of the electric current of coil 107 and lens holding member 105.
As stated, the involved lens driver 1 of this embodiment can make magnetic field act on coil 59 equably, so even the volume width of coil 59 is narrow, also can keep the thrust and the linearity of lens holding member.And flange part 53 also has the function that the path that makes foreign matter get into imageing sensor from the outside of lens driver 1 complicates.
But this embodiment has formed the portion of dodging 55 on flange part 53, therefore still exist foreign matter pass between lens holding member 5 and the coil 59 the gap and via dodging the situation (with reference to Fig. 4 A) that portion 55 gets into the below of flange parts 53.Even in this situation, also can suppress the inboard that foreign matter gets into this ring-type convex shaped part 22 through the outstanding ring-type convex shaped part 22 of 2 carrying plane 28 from the chassis.Therefore, foreign matter can be via getting on the imageing sensor at the peristome that forms on the carrying plane 28 on chassis 2 21.
The assembling operation of lens driver then will be described with reference to Fig. 6.Fig. 6 is the key diagram of the assembling operation first half of the involved lens driver of this embodiment.Fig. 7 is the key diagram of the assembling operation latter half of the involved lens driver of this embodiment.And following assembling operation can be implemented through aut.eq. automatically.
Shown in Fig. 6 A, through bonding agent respectively at 4 corner fixed magnets 6 of yoke portion 7.At this moment, the pole surface of magnet 6 and the wall of the inner wall part 74 of yoke portion 7 are across appointed interval mutually opposed (with reference to Fig. 4 A).Then, shown in Fig. 6 B, carry leaf spring 8, and top cover 9 is installed from the top at the upper surface of yoke portion 7.At this moment, the inserting hole 76 in 4 corners of the notch part 85 in slotting respectively logical upward 4 corners of leaf spring 8 of the lug boss 91 in 4 of top cover 9 corners and yoke portion 7.Then, through each lug boss 91 of hot riveting top cover 9, top cover 9, last leaf spring 8 and yoke portion 7 are become one.
On the other hand, shown in Fig. 6 C, at the periphery winding around 59 of lens holding member 5.At this moment, be used to prevent to twine lax anchor clamps 95 having installed through the portion that dodges 55 that on flange part 53, forms on the lens holding member 5, and prevent that through these anchor clamps 95 winding of coil 59 is lax.That is, to lens holding member 5 winding arounds 59 time, dodge the function that the claw 96 slotting inserting holes that lead to that make anchor clamps 95 play in portion 55.Coil 59 is to be wrapped on the lens holding member 5 through the state between the adjacent coil supports portion 54 of claw 96 supportings.
Shown in Fig. 8 A, the coil 59 that twines with anchor clamps 95 does not take place to twine lax between adjacent coil supports portion 54 yet.On the other hand,, on flange part 102, do not form when dodging portion, can not use anchor clamps 95 winding arounds 107 as the involved lens driver 101 of comparative example.Therefore, shown in Fig. 8 B, the winding that between adjacent coil supports portion 111, can produce coil 107 is lax.As stated, in this embodiment, the claw 96 through anchor clamps 95 suppresses the lax of coils 59, thereby can be to lens holding member 5 winding around 59 well.
And the both ends that are wrapped in the coil 59 on the lens holding member 5 are wrapped on a pair of kinking pin 57.At this moment, wait through laser and remove after the dielectric film both ends of winding around 59.Then, shown in Fig. 6 D, a pair of spring leaf 41 is installed in the bottom of lens holding member 5.At this moment, the lug boss 56 of lens holding member 5 is inserted the inserting hole 45 of logical a pair of spring leaf 41 respectively.Then, through the lug boss 56 of hot riveting lens holding member 5, lens holding member 5 and a pair of spring leaf 41 are become one.
And the junction surface 62 of end and a pair of spring leaf 41 that is wrapped in the coil 59 on the kinking pin 57 is by laser bonding.At this moment, through near the notch part 63 the junction surface 62, reduce the hear rate at junction surface 62, available a spot of heating makes soldering paste 65 fusions.And, through near the notch part 63 the junction surface 62, suppress the diffusion of soldering paste 65, between coil 59 and junction surface 62, form the welded bridge of high-quality.By the way, the both ends of a pair of spring leaf 41 and coil 59 are electrically connected.
And, shown in Fig. 7 A, pair of outer terminal 3 is installed on chassis 2.At this moment, outside terminal 3 makes side plate insert the mounting hole 26 on logical chassis 2, and makes the lug boss 27 on chassis 2 outstanding from inserting hole 31.Then, through the lug boss 27 on hot riveting chassis 2, chassis 2 and pair of outer terminal 3 are become one.
As described above, on the chassis 2 of assembled, shown in Fig. 7 B, carry the lens holding member 5 of having put subsidiary coil 59, and across a pair of spring leaf 41 installation chassis 2 and lens holding member 5.At this moment, insert inserting hole 46 and the hot riveting lug boss 24 that leads to a pair of spring leaf 41, chassis 2 and lens holding member 5 are become one through the lug boss 24 on chassis 2.And a pair of spring leaf 41 engages with outside terminal 3 respectively through laser bonding.By the way, the both ends of pair of outer terminal 3 and coil 59 are electrically connected with the both ends of coil 59 through a pair of spring leaf 41.
After becoming one with lens holding member 5 when chassis 2, shown in Fig. 7 C, cover the yoke portion 7 of subsidiary top cover 9 from the top.At this moment, the inner wall part 74 of yoke portion 7 is inserted logical in the coil 59 and the gap between the cylindrical portion 52 of lens holding member 5.By the way, 4 corners in yoke portion 7 are between magnet 6 and the inner wall part 74 coil 59, thereby form magnetic circuit.And the edge part 75 of yoke portion 7 is carried to be placed on the sheet metal 25 on chassis 2, and engages with sheet metal 25 through laser bonding.
At last, shown in Fig. 7 D, the upper surface of the 72 pairs of cylindrical portion 52 of window portion through yoke portion 7 and the inboard board 83 of last leaf spring 8 are coated bonding agent.So yoke portion 7 and top cover 9 are bonded through last leaf spring 8 with lens holding member 5.As described above, the assembled lens driver that finishes 1 receives the application of force to chassis 2 sides through being arranged on the leaf spring 4,8 of lens holding member about in the of 5.So lens driver 1 makes the application of force of lens holding member 5 opposing leaf springs 4,8 move to optical axis direction through giving the coil that on lens holding member 5, twines 59 energisings.
The action of lens driver will be described with reference to Fig. 9 below.Fig. 9 is the action specification figure of the involved lens driver of this embodiment.
As shown in Figure 9, magnet 6 is fixed on 4 corners of the periphery wall portion 73 of yoke portion 7, and inner wall part 74 is in the pole surface 67 opposed positions with magnet 6, forms magnetic circuit in 4 corners of lens driver 1.Between magnet 6 and inner wall part 74, exist to be wrapped in the coil 59 on the lens holding member 5.The lines of magnetic induction that magnetic circuit forms in pole surface 67 generations of magnet 6 passes through coil 59 towards inner wall part 74.Lens holding member 5 makes pretension act on chassis 2 sides through last leaf spring 8 and following leaf spring 4.
Under this original state, when leading to electric current for coil 59, coil 59 is produced electromagnetic force with optical axis direction.Through the electromagnetic force that in coil 59, produces, the application of force that leaf spring 8 and following leaf spring 4 are gone up in 5 opposings of lens holding member moves to optical axis direction, does not have the phacoid of expression and the focal length between the imageing sensor among the adjustment figure.At this moment, because the pole surface of the inner wall part 74 of yoke portion 7 and magnet 6 parallels, therefore the lines of magnetic induction through coil 59 is a lot, so even only form magnetic circuit in 4 corners of lens driver 1, also can produce enough driving forces.
And, lens holding member 5 begin to move to stop to move during, move in the parallel magnetic field range L of coil 59 between inner wall part 74 and magnet 6.Therefore, in the moving of lens holding member 5, magnetic field acts on coil 59 equably, so can guarantee the thrust and the linearity of lens holding member 5.And when the energising that stops coil 59, through the last leaf spring 8 and the reset force of leaf spring 4 down, lens holding member 5 is pulled initial position.
As stated, according to the involved lens driver 1 of this embodiment,, when driving lens holding member 5, avoid the inner wall part 74 of yoke portion 7 and the interference between the flange part 53 through the portion that dodges 55 that on the flange part 53 of lens holding member 5, forms.Therefore, can extend the inner wall part 74 of yoke portion 7, and can when driving lens holding member 5, make magnetic field act on coil 59 equably along optical axis direction.So,, also can keep the thrust and the linearity of lens holding member 5 even the volume width of coil 59 is narrow.
In addition, the present invention is not limited to above-mentioned embodiment, can various changes implement.In the above-described embodiment,, be not limited to this about size shown in the drawings and shape etc., can suitably change in the scope of performance effect of the present invention.And, in the scope that does not exceed the object of the invention, can suitably change enforcement.
For example, in this embodiment, run through flange part and formed the portion of dodging, but not only for scheduling this structure.Dodge portion as long as adopt structure that the end of inner wall part can insert, the structure that promptly can avoid interfering between inner wall part and the flange part is just passable, for example, the portion of dodging is that the concavity portion that on flange part, forms is also passable.
Also have, the claw that in this embodiment, has adopted the portion of dodging to have to make anchor clamps is inserted the structure of the function of logical inserting hole, but is not limited to this structure.It is also passable that the portion that dodges only possesses the function of avoiding inner wall part and flange part to interfere.
And, in this embodiment, be illustrated, but be not limited to this structure as the magnetic part magnet of having given an example.As long as magnetic part can form magnetic circuit with yoke portion, adopt any material can.And, in this embodiment, adopt the structure that magnet is installed in the periphery wall portion of yoke portion, but be not limited to this structure.Magnet and if the inner wall part of yoke portion between form parallel magnetic field just can, for example, can adopt the structure that is supported by the chassis also passable.
In addition, in this embodiment, adopted structure, but be not limited to this structure with the aut.eq. assembling lens driving device.Employing with the structure of manual mode assembling lens driving device also can, adopt combination aut.eq. and manual mode to come the structure of assembling lens driving device also passable.
At last, in this embodiment, be not limited to above-mentioned assembling sequence.For example, it is also passable on the kinking pin, to peel off the dielectric film of end turn after the end of winding around again.And, before this force application part is fixed on the lens holding member, on force application part, engages overhang and also can.
Claims (4)
1. lens driver is characterized in that possessing:
The lens holding member can keep phacoid;
Coil is installed on the said lens holding member, and the optical axis of said lens holding member around outer peripheral face between form the gap;
Yoke portion has the outside wall portions in the outside that surrounds above-mentioned coil and at the above-mentioned gap and the opposed inner wall part of above-mentioned outside wall portions of the inboard of above-mentioned coil; And
Magnetic part forms the magnetic circuit that acts on above-mentioned coil with above-mentioned yoke portion;
At the outer peripheral face of said lens holding member, below above-mentioned coil, forming flange part on the optical axis direction, and on this flange part, be provided with the enterable portion that dodges in end of above-mentioned inner wall part.
2. lens driver according to claim 1 is characterized in that,
The above-mentioned portion that dodges runs through above-mentioned flange part and forms along optical axis direction.
3. lens driver according to claim 2 is characterized in that,
The above-mentioned portion of dodging forms the claw that makes anchor clamps and can insert, the winding of the above-mentioned coil of this fixture supports on the said lens holding member.
4. according to any described lens driver in the claim 1 to 3, it is characterized in that,
Possess the chassis, the said lens holding member of substrate upper support of imaging apparatus is being installed on this chassis,
On the carrying plane of the supporting said lens holding member on above-mentioned chassis, form the ring-type convex shaped part that makes peristome that imaging apparatus exposes with respect to the said lens body and surround above-mentioned peristome in the inboard of above-mentioned flange part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011113376A JP2012242648A (en) | 2011-05-20 | 2011-05-20 | Lens drive device |
| JP113376/2011 | 2011-05-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102789038A true CN102789038A (en) | 2012-11-21 |
| CN102789038B CN102789038B (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210135230.XA Active CN102789038B (en) | 2011-05-20 | 2012-05-02 | Lens drive device |
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|---|---|
| JP (1) | JP2012242648A (en) |
| CN (1) | CN102789038B (en) |
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| CN110488450A (en) * | 2013-11-05 | 2019-11-22 | Lg伊诺特有限公司 | Camera model |
| CN111443499A (en) * | 2013-07-12 | 2020-07-24 | Lg伊诺特有限公司 | Camera module |
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| EP3113324B1 (en) * | 2014-02-27 | 2023-12-06 | LG Innotek Co., Ltd. | Lens driving motor |
| JP6542051B2 (en) * | 2015-07-14 | 2019-07-10 | アルプスアルパイン株式会社 | Lens drive |
| WO2018198796A1 (en) * | 2017-04-25 | 2018-11-01 | アルプス電気株式会社 | Lens drive device, camera module using lens drive device, and method for manufacturing lens drive device |
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| US20050180275A1 (en) * | 2004-02-18 | 2005-08-18 | Manabu Shiraki | Lens driving apparatus |
| CN1971329A (en) * | 2005-11-25 | 2007-05-30 | 阿尔卑斯电气株式会社 | Lens drive device and pickup device adopting the lens drive device |
| CN101135763A (en) * | 2006-08-28 | 2008-03-05 | 阿尔卑斯电气株式会社 | Lens driving device |
| JP2010191130A (en) * | 2009-02-18 | 2010-09-02 | Mitsumi Electric Co Ltd | Imaging apparatus |
| CN201780440U (en) * | 2009-08-20 | 2011-03-30 | 阿尔卑斯电气株式会社 | Lens driving device |
-
2011
- 2011-05-20 JP JP2011113376A patent/JP2012242648A/en not_active Withdrawn
-
2012
- 2012-05-02 CN CN201210135230.XA patent/CN102789038B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050129384A1 (en) * | 2003-12-11 | 2005-06-16 | Sharp Kabushiki Kaisha | Camera module, manufacturing method of camera module, electronic apparatus, and manufacturing method of electronic apparatus |
| US20050180275A1 (en) * | 2004-02-18 | 2005-08-18 | Manabu Shiraki | Lens driving apparatus |
| CN1971329A (en) * | 2005-11-25 | 2007-05-30 | 阿尔卑斯电气株式会社 | Lens drive device and pickup device adopting the lens drive device |
| CN101135763A (en) * | 2006-08-28 | 2008-03-05 | 阿尔卑斯电气株式会社 | Lens driving device |
| JP2010191130A (en) * | 2009-02-18 | 2010-09-02 | Mitsumi Electric Co Ltd | Imaging apparatus |
| CN201780440U (en) * | 2009-08-20 | 2011-03-30 | 阿尔卑斯电气株式会社 | Lens driving device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111443499A (en) * | 2013-07-12 | 2020-07-24 | Lg伊诺特有限公司 | Camera module |
| CN111443499B (en) * | 2013-07-12 | 2022-08-26 | Lg伊诺特有限公司 | Camera module |
| US11809016B2 (en) | 2013-07-12 | 2023-11-07 | Lg Innotek Co., Ltd. | Camera module |
| CN110488450A (en) * | 2013-11-05 | 2019-11-22 | Lg伊诺特有限公司 | Camera model |
| CN110488450B (en) * | 2013-11-05 | 2022-09-30 | Lg伊诺特有限公司 | Camera module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102789038B (en) | 2015-02-25 |
| JP2012242648A (en) | 2012-12-10 |
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Address after: Tokyo, Japan, Japan Patentee after: Alpine Alpine Company Address before: Tokyo, Japan, Japan Patentee before: Alps Electric Co., Ltd. |