CN102957297B - A kind of Multi-purpose micro voice coil motor - Google Patents
A kind of Multi-purpose micro voice coil motor Download PDFInfo
- Publication number
- CN102957297B CN102957297B CN201210472465.8A CN201210472465A CN102957297B CN 102957297 B CN102957297 B CN 102957297B CN 201210472465 A CN201210472465 A CN 201210472465A CN 102957297 B CN102957297 B CN 102957297B
- Authority
- CN
- China
- Prior art keywords
- coil holder
- yoke
- pad
- elater
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The open a kind of Multi-purpose micro voice coil motor of the present invention, including magnetic yoke body, the first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment and base, magnetic yoke body and base cooperate setting, constituting a closing space being used for accommodating described first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment, magnetic yoke body uses metal material punching press one-body molded.By utilizing the magnetic yoke body of metal material to cover whole product, and utilize base to match with magnetic yoke body, motor product is sealed in inside magnetic yoke body, which increase the intensity of motor, and additionally do not use other housings to cover motor again, the space making motor internal increases, permanent magnet and coil dimension increase, and then increase motor driving force, improve motor performance, and magnetic yoke body undertakes multiple role in motor, further decreases the quantity of motor component part, reduces manufacturing process and assembly difficulty.
Description
Technical field
The present invention relates to voice coil motor technical field, particularly relate to a kind of Multi-purpose micro voice coil motor for photographic head automatic focusing.
Background technology
Voice coil motor is a kind of miniature displacement drive motor, and it has, and rotor travel displacement is little, small product size is little, fast response time, with low cost, low in energy consumption, the travel displacement characteristic such as accurately.Because voice coil motor has above-mentioned characteristic, so recently the camera in mobile phone, the photographic head in notebook computer, the first-class minitype optical device of the shooting in panel computer use voice coil motor to make actuator, to be used for driving camera lens in photographic head to move along optical axis direction, thus realize automatic focusing.
Voice coil motor utilizes Ampere law left hand rule: i.e. hot-wire coil can be changed the size of energization solenoid institute stress by the power being perpendicular to magnetic direction and the sense of current in the magnetic field that permanent magnet produces by changing input current size.Voice coil motor utilizes this principle to change the electromagnetic force suffered by solenoid by changing size of current in coil, and then realization change solenoid displacement in magnetic field reaches motor and drives other element to do mechanical movement.Current chip drives input current size resolution can be made very small the most accurate, therefore voice coil motor has the highest precision on command displacement, so makes voice coil motor the most accurate when the distance controlling to adjust in camera model between eyeglass and imageing sensor.
Such as, Chinese patent literature CN102347679A open a kind of " voice coil motor ", comprising: rotor, including for accommodating the cylindrical spool of camera lens and both ends open and including being wrapped in the coil block of the peripheral coil of described spool；Stator, including the opening being formed for exposing camera lens cylindrical yoke, multiple be placed on that described yoke is internal and the magnet relative with described coil block and be placed on inside described yoke the magnet fixture with fixing the plurality of magnet；And elastic component, it is elastically supported described spool.The voice coil motor using this structure has the disadvantage that
1, the connection Flexible element (i.e. elater) in the first elastic component and the second elastic component is only with simple circuitous configuration, make during motor movement, elater structure can only produce less centripetal tension, so that rotor coil holder axis is dynamically bigger with the angle formed time static, typically reach more than 13 points (more than 0.21 °) at deviation angle, affect focus effects further, cause high-pixel mobile phone quality of taking pictures the most very poor；
2, the housing using plastics to make is connected with yoke top, and cover the upper end of yoke, the lower end of yoke is connected with substrate, owing to yoke top is covered by plastic casing, make motor housing can not play the interference of the electromagnetic wave that various elements produce near shielding, thus can affect the precision that motor runs, simultaneously because housing is plastic material, therefore in terms of shock resistance and vibration, intensity is the most not enough；
3, outside yoke, increase a metal covering case yoke Hull housing is covered in the lump and is connected with substrate, which not only adds the cost of motor, make assembling and processed complex, simultaneously because the size of whole motor is certain, increasing covering case will necessarily make motor internal space diminish, cause motor permanent magnet and coil dimension to diminish, so that motor driving force reduces, affect motor performance；
4, spool and the structure that contact structures are protuberance and plane contact of substrate, the so dust and other impurities at motor internal will be entered on the sensitive chip of photographic head by the gap between spool protuberance and substrate, affected shooting quality；
5, the pole piece on the first elastic component is to use welding manner to receive on the second elastic component, due to the small volume of pole piece, difficulty and workload during welding pole piece are very big, and welding quality cannot ensure, and the pole piece intensity welded is the highest, and service life, ratio was relatively low.
Summary of the invention
One object of the present invention, is to provide a kind of Multi-purpose micro voice coil motor, by using metal magnetic yoke body as motor housing, make motor manufacturing procedure simpler, and motor size is certain when, the cooperation area of coil and permanent magnet can be increased, thus improve motor driving force.
Another object of the present invention; it is to provide a kind of Multi-purpose micro voice coil motor; by magnetic yoke body uses metal material punching press one-body molded; the intensity of whole motor can be increased; protect the safety of the part of motor internal, and the magnetic yoke body that metal material is made can be good at the Electromagnetic Interference that near shield electric machine, various elements produce.
Another object of the present invention, it is to provide a kind of Multi-purpose micro voice coil motor, by changing upper shell fragment and the elater structure of lower shell fragment, in focus process, this elater can produce bigger centripetal tension, so that rotor coil holder axis is dynamically minimum with the angle formed time static, and then reach the more preferable purpose of shooting effect.
Another object of the present invention, it is to provide a kind of Multi-purpose micro voice coil motor, by by many elater symmetries, be uniformly arranged, make each elater produce the centripetal tension of relatively large formed objects in focus process, further ensure rotor coil holder axis dynamically minimum with the angle formed time static.
For reaching this purpose, the present invention by the following technical solutions:
A kind of Multi-purpose micro voice coil motor, including magnetic yoke body, the first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment and base, described magnetic yoke body and described base cooperate setting, constituting a closing space being used for accommodating described first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment, described magnetic yoke body uses metal material punching press one-body molded.
A kind of preferred version as Multi-purpose micro voice coil motor, described magnetic yoke body includes rectangle or square yoke base plate, on described yoke base plate, yoke side frame is set, described yoke base plate centrally disposed yoke through hole, in described yoke bore periphery and described yoke side frame homonymy annular, multiple yoke column is set, described yoke column is set in parallel with described yoke side frame, on described yoke base plate, yoke bore periphery near the side of described yoke side frame, yoke groove is set；
Described first pad is set in described magnetic yoke body, described first pad includes the first support ring matched with yoke base plate, corresponding described yoke side frame corner, described first corner, support ring top arranges pad column, arranges the first pad protuberance in described first support ring by paracentral side.
Further, adhesive is used to be bonded as one between described magnetic yoke body and described first pad.
Preferably, described adhesive is synthetic resin adhesive.
Further, described magnetic yoke body uses high magnetic conduction, good malleability metal material to make.
More preferably, described magnetic yoke body uses thin steel sheet punching press to make.
More preferably, described magnetic yoke body uses slim copper coin punching press to make.
Further, described first pad is adopted and is made from an insulative material.
Preferably, described first pad uses the direct injection mo(u)lding of plastics.
A kind of preferred version as Multi-purpose micro voice coil motor, described upper shell fragment is set in the first support ring of described first pad, described upper shell fragment includes the first housing, first inside casing and the first elater, the corresponding described first pad protuberance in described first housing periphery arranges the first housing groove, first fixing hole of fixing described coil holder is set in described first inside casing, described first fixing hole annular arranges multiple first and fixes groove, described yoke column is through the gap described first housing and the first inside casing, and described upper shell fragment is fixed in described magnetic yoke body, described first elater includes at least six sections of curved portions bent and two line parts, and described line part uses with described curved portions, and straight line is tangent with arc to be coupled, described first elater respectively with described first housing, described first inside casing arc-shaped transition connects.
nullPreferably，Described first elater includes eight sections of curved portions bent and two sections of line parts，It is respectively the first curved portions、Second curved portions、3rd curved portions、4th curved portions、5th curved portions、6th curved portions、7th curved portions、8th curved portions、First line part and the second line part，And described first curved portions、Second curved portions、3rd curved portions and the 4th curved portions sequentially become a S type elater portion by the tangent coupling of arc，Described 5th curved portions、6th curved portions、7th curved portions and the 8th curved portions sequentially become the 2nd S type elater portion by the tangent coupling of arc，Described first inside casing、Described first line part、Oneth S type elater portion、2nd S type elater portion、Second line part、Described first housing sequentially connects，Described first inside casing and described first line part、First housing all uses arc-shaped transition to be connected with described second line part，Described first line part and a described S type elater portion、Described second line part all uses with described 2nd S type elater portion that straight line and arc are tangent to be coupled，A described S type elater portion uses with the 2nd S type elater portion that arc is tangent with arc couples.
A kind of preferred version as Multi-purpose micro voice coil motor, described coil holder includes bottom coil holder top and coil holder, described coil holder top is fixed by the first inside casing of upper shell fragment, and the setting of described coil holder top fixes, with the first of described upper shell fragment, the coil holder top lug that groove matches, between bottom described coil holder top and coil holder, coil holder light hole is set, between bottom described coil holder top and coil holder, coil holder outer wall is set back to described coil holder light hole, the coil holder groove matched with yoke column it is provided with on described coil holder outer wall, on bottom described coil holder, coil holder light hole periphery arranges coil holder dust ring, on described coil holder dust ring, the side near described coil holder outer wall arranges coil holder double wedge, it is symmetrical arranged two coil holder bottom lug near coil holder outer wall bottom described coil holder, on described coil holder outer wall, described coil is set.
Preferably, described coil holder uses synthetic resin material single injection-molded, and such coil holder has precision size, thermal coefficient of expansion is little, have electric insulation, without characteristics such as dust generation, quick production in enormous quantities.
Preferably, described coil is set to tubular or square or special-shaped.
More preferably, described coil is wrapped on described coil holder based on described coil holder outer wall, and forms integrative-structure with described coil holder.
A kind of preferred version as Multi-purpose micro voice coil motor, between described each two pad column, it is close to described yoke side frame described permanent magnet is set, described permanent magnet includes the first magnet, the second magnet, the 3rd magnet and the 4th magnet, described first magnet, the second magnet, the 3rd magnet and the 4th magnet are thin bar magnet, and the magnetic surface of described permanent magnet is parallel with described coil surface.
nullA kind of preferred version as Multi-purpose micro voice coil motor，Described lower shell fragment includes the second housing、Second inside casing and the second elater，Described second housing is that disjunction is arranged along lower shell fragment center，Described second inside casing is also that disjunction is arranged along lower shell fragment center，Have in described second inside casing for fixing the second fixing hole bottom described coil holder，The corresponding described coil holder bottom lug in the peripheral side near described second housing of described second inside casing arranges second and fixes groove，Described second elater includes at least six sections of curved portions bent and two line parts，And described line part uses with described curved portions, and straight line is tangent with arc to be coupled，Described second elater respectively with described second housing、Described second inside casing arc-shaped transition connects，Described second housing arranges two for the pole piece connecing electricity，Second inside casing at these two pole piece places welds connection with initial and the end lines of coil respectively.
When the second housing, the second inside casing employing are independent two-part non-enclosed structure by its center split, insulation function can be realized, it is not necessary to be separately provided insulating part again and realize insulation function, simplify technique and saved part, reduce further cost.
Further, described second housing and described pole piece are integral type structure, and use bending and molding.
By pole piece one-body molded on the second housing, decrease the operation welding pole piece on the second housing, overcome traditional positive and negative terminal high with shell fragment welding process requirement, it is difficult to the problem ensureing yields；Also save the use of parts simultaneously, save cost.
nullPreferably，Described second elater includes eight sections of curved portions bent and three sections of line parts，It is respectively the 9th curved portions、Tenth curved portions、11st curved portions、12nd curved portions、13rd curved portions、14th curved portions、15th curved portions、16th curved portions、3rd line part、4th line part and the 5th line part，And described 9th curved portions、Tenth curved portions、11st curved portions、12nd curved portions sequentially becomes the 3rd S type elater portion by the tangent coupling of arc，Described 13rd curved portions、14th curved portions、15th curved portions、16th curved portions sequentially becomes the 4th S type elater portion by the tangent coupling of arc，Described second inside casing、Described 3rd line part、3rd S type elater portion、4th line part、4th S type elater portion、Described 5th line part、Described second housing sequentially connects，Described second inside casing and described 3rd line part、Second housing all uses arc-shaped transition to be connected with described 5th line part，Described 3rd line part and described 3rd S type elater portion、Described 4th line part and described 3rd S type elater portion and the 4th S type elater portion、Described 4th S type elater portion all uses with described 5th line part that straight line and arc are tangent to be coupled.
By changing the first elater and the structure of the second elater, it is made the most at least to include two S type elater portions in nonlinear arrangement, add the structural stability of shell fragment, make rotor coil holder coil holder axis in motor process dynamically can control within 0.12 ° with the angle meansigma methods formed time static, much smaller than traditional rotor coil holder in motor process coil holder axis dynamically with the angle meansigma methods formed time static more than 0.21 °, create unforeseeable technique effect, for ensureing that focus effects produces conclusive effect.It will be appreciated by persons skilled in the art that any there are at least six sections of curved portions, may be constructed the elater structure that at least two is the S type elater portion of nonlinear arrangement, the most applicable present invention.
More preferably, described upper shell fragment and lower shell fragment all use other metallic composite panel such as nickel, copper to make.
Preferably, the consistency of thickness at the top of described first elater and/or the second elater to end, the width at its top to end is arranged by the narrow uniform gradient that broadens or narrow from the width；
Or, the width at the top of described first elater and/or the second elater to end is consistent, and the thickness at its top to end is thinning by thickness or is arranged by thin thickening uniform gradient.
By above-mentioned design, it is possible to achieve eliminate elater stress in coil holder motor process and concentrate purpose.
A kind of preferred version as Multi-purpose micro voice coil motor, described second pad is arranged between the second housing of described permanent magnet and described lower shell fragment, for the second housing of described lower shell fragment is pressed on described base, the second support ring that described second pad includes and described second housing matching form closes, the corner of described second support ring has caved inward pad groove.
A kind of preferred version as Multi-purpose micro voice coil motor, described base centrally disposed base light hole, the corresponding described coil holder dust ring in described base light hole periphery arranges base dust ring, it is provided for supporting step in the base dust ring of described coil holder dust ring between described base dust ring and described base light hole, on described base dust ring, side away from described base light hole center arranges the base groove matched respectively with coil holder double wedge and coil holder bottom lug, the pedestal upright post of pad groove match with the second pad it is provided with in described base corner.
A kind of preferred version as Multi-purpose micro voice coil motor, each frame of described yoke side frame is uniformly distributed four yoke protuberances, one is arranged for ensureing the ground terminal that described magnetic yoke body built-in field is stable on one of them yoke protuberance, corresponding described yoke protuberance arranges screens groove in described chassis side, so that described magnetic yoke body is integrated with described base energy clamping, the corresponding described pole piece in the both sides of a screens groove is provided with the pole piece through hole passed through for described pole piece wherein.
A kind of preferred version as Multi-purpose micro voice coil motor, described first elater and the second elater all have four groups, and the first elater symmetry described in four groups is distributed between described first housing and described first inside casing, the second elater symmetry described in four groups is distributed between described second housing and described second inside casing.
By above-mentioned design, the four groups of elater being symmetrically uniformly arranged, can make in coil holder motor process, and often group elater all can produce the centripetal tension force of an equal size, thus ensure that coil holder coil holder axis in motor process is dynamically minimum with the angle formed time static, and then ensure focus effects.
The invention have the benefit that
1, by utilizing the magnetic yoke body of metal material to cover whole product, and utilize base to match with magnetic yoke body, motor product is sealed in inside magnetic yoke body, which increase the intensity of motor, and additionally do not use other housings to cover motor again, the space making motor internal increases, permanent magnet and coil dimension increase, and then increase motor driving force, improve motor performance, and magnetic yoke body undertakes multiple role in motor, further decreases the quantity of motor component part, reduces manufacturing process and assembly difficulty；
2, by using special elater structure in the voice coil motor of the present invention, can make motor in running, rotor coil holder axis dynamically can control within 0.12 ° with the angle meansigma methods formed time static, owing to camera lens is fixed on rotor coil holder, make camera lens in focus process, camera lens optical axis dynamically minimizes with the angle formed time static, it is ensured that focus effects；
3, base dust ring is set by the base light hole deep side on base, and the coil holder light hole periphery correspondence base dust ring at coil holder arranges coil holder dust ring, can effectively prevent the foreign body within voice coil motor from dropping on sensitive chip, further improve the shooting quality of video camera.
Accompanying drawing explanation
Fig. 1 is the detonation configuration schematic diagram of Multi-purpose micro voice coil motor of the present invention；
Fig. 2 is the structural representation after Fig. 1 assembles；
Fig. 3 is the cross-sectional schematic of A-A in Fig. 2；
Fig. 4 is the perspective view of Fig. 2；
Fig. 5 is the schematic front view of magnetic yoke body in Fig. 1；
Fig. 6 is the schematic side view of Fig. 5；
Fig. 7 is the structural representation of the first pad in Fig. 1；
Fig. 8 is the assembling schematic diagram of magnetic yoke body and the first pad in Fig. 1；
Fig. 9 is the structural representation of upper shell fragment in Fig. 1；
Figure 10 is the structural representation of coil holder in Fig. 1；
Figure 11 is the assembling schematic diagram of Fig. 1 coil and coil holder；
Figure 12 is the structural representation of the second pad in Fig. 1；
Figure 13 is the structural representation of lower shell fragment in Fig. 1；
Figure 14 is the structural representation of base in Fig. 1.
In figure:
1, magnetic yoke body；11, ground terminal；12, yoke base plate；13, yoke side frame；14, yoke through hole；15, yoke column；16, yoke groove；17, yoke protuberance；
2, the first pad；21, the first support ring；22, pad column；23, the first pad protuberance；
3, upper shell fragment；31, the first housing；32, the first inside casing；33, the first fixing hole；34, first groove is fixed；35, the first elater；350, the first line part；351, the first curved portions；352, the second curved portions；353, the 3rd curved portions；354, the 4th curved portions；355, the 5th curved portions；356, the 6th curved portions；357, the 7th curved portions；358, the 8th curved portions；359, the second line part；36, the first housing groove；
4, coil；
5, coil holder；51, coil holder light hole；52, coil holder top；53, coil holder top lug；54, bottom coil holder；55, coil holder outer wall；56, coil holder groove；57, coil holder dust ring；58, coil holder double wedge；59, coil holder bottom lug；
6, permanent magnet；61, the first magnet；62, the second magnet；63, the 3rd magnet；64, the 4th magnet；
7, the second pad；71, the second support ring；72, pad groove；
8, lower shell fragment；81, the second housing；82, the second inside casing；83, the second fixing hole；84, second groove is fixed；85, the second elater；850, the 3rd line part；851, the 9th curved portions；852, the tenth curved portions；853, the 11st curved portions；854, the 12nd curved portions；855, the 4th line part；856, the 13rd curved portions；857, the 14th curved portions；858, the 15th curved portions；859, the 16th curved portions；860, the 5th line part；88, pole piece；
9, base；91, base dust ring；92, base light hole；93, step in base dust ring；94, base groove；95, pedestal upright post；96, screens groove；97, pole piece through hole.
Detailed description of the invention
As shown in Fig. 1～14, the Multi-purpose micro voice coil motor described in this embodiment, including magnetic yoke body the 1, first pad 2, upper shell fragment 3, coil 4, coil holder 5, permanent magnet the 6, second pad 7, lower shell fragment 8 and base 9.
As shown in Fig. 5～6, magnetic yoke body 1 includes square yoke base plate 12, yoke side frame 13 is set on yoke base plate 12, yoke base plate 12 centrally disposed yoke through hole 14, at yoke through hole 14 periphery and yoke side frame 13 homonymy annular, four yoke columns 15 are set, four yoke columns 15 corner with yoke side frame 13 respectively is set in parallel, on yoke base plate 12, yoke through hole 14 periphery near the side of yoke side frame 13, yoke groove 16 is set.
In the present embodiment, magnetic yoke body 1 uses high magnetic conduction, the metal of good malleability is made, it is preferred to use copper becomes.
As shown in Figure 7, the first pad 2 it is assembled with in magnetic yoke body 1, first pad 2 includes the first support ring 21 matched with yoke base plate 12, the corner of the first corner, support ring 21 top correspondence yoke side frame 13 arranges pad column 22, arranges the first pad protuberance 23 in the first support ring 21 by paracentral side.
In the present embodiment, the first pad 2 uses the direct injection mo(u)lding of plastics.
nullAs shown in Figure 9，Upper shell fragment 3 includes the first housing 31、First inside casing 32 and the first elater 35，The peripheral corresponding first pad protuberance 23 of first housing 31 arranges the first housing groove 36，First fixing hole 33 of fixing coil holder 5 is set in first inside casing 32，Uniform four first of first fixing hole 33 annular fixes groove 34，Yoke column 15 is through the gap the first housing 31 and the first inside casing 32，And upper shell fragment 3 is fixed in magnetic yoke body 1，First elater 35 includes eight sections of curved portions bent and two sections of line parts，It is respectively the first curved portions 351、Second curved portions 352、3rd curved portions 353、4th curved portions 354、5th curved portions 355、6th curved portions 356、7th curved portions 357、8th curved portions 358、First line part 350 and the second line part 359，And first curved portions 351、Second curved portions 352、3rd curved portions 353 and the 4th curved portions 354 sequentially become a S type elater portion by the tangent coupling of arc，5th curved portions 355、6th curved portions 356、7th curved portions 357 and the 8th curved portions 358 sequentially become the 2nd S type elater portion by the tangent coupling of arc，First inside casing 32、First line part 350、Oneth S type elater portion、2nd S type elater portion、Second line part 359、First housing 31 sequentially connects，First inside casing 32 and the first line part 350、First housing 31 all uses arc-shaped transition to be connected with the second line part 359，First line part 350 and a S type elater portion、Second line part 359 all uses with the 2nd S type elater portion that straight line and arc are tangent to be coupled，Oneth S type elater portion uses with the 2nd S type elater portion that arc is tangent with arc couples.
First housing 31 of upper shell fragment 3 is arranged between the first support ring 21 and yoke column 15, and yoke column 15 is inserted in the space between the first housing 31 and the first inside casing 32.
nullAs shown in FIG. 10 and 11，Coil holder 5 includes bottom coil holder top 52 and coil holder 54，Coil holder top 52 is fixed by the first inside casing 32 of upper shell fragment 3，And coil holder top 52 setting fixes, with the first of upper shell fragment 3, the coil holder top lug 53 that groove 34 matches，Coil holder light hole 51 is set between 54 bottom coil holder top 52 and coil holder，Between 53, coil holder outer wall 55 is set back to coil holder light hole 51 bottom coil holder top 52 and coil holder，The coil holder groove 56 matched with yoke column 15 it is provided with on coil holder outer wall 55，Bottom coil holder on 54、Coil holder light hole 51 periphery arranges coil holder dust ring 57，On coil holder dust ring 57, the side near coil holder outer wall 55 arranges coil holder double wedge 58，Bottom coil holder, 54 are symmetrical arranged two coil holder bottom lug 59 near coil holder outer wall 55，Coil 4 is set on coil holder outer wall 55，Coil 4 uses square frame structure.
In the present embodiment, coil holder 5 uses that synthetic resin material single injection-molded, such coil holder 5 have precision size, thermal coefficient of expansion is little, have electric insulation, without characteristics such as dust generation, quick production in enormous quantities.
As shown in Figure 8, between each two pad column 22, it is close to yoke side frame 13 permanent magnet 6 (permanent magnet 6 not shown in this figure) is installed, permanent magnet 6 includes the first magnet the 61, second magnet the 62, the 3rd magnet 63 and the 4th magnet 64, first magnet the 61, second magnet the 62, the 3rd magnet 63 and the 4th magnet 64 are thin bar magnet, and the magnetic surface of permanent magnet 6 is parallel with the side of coil 4.
Permanent magnet 6 is N pole or S pole towards coil 4 position, permanent magnet 6 is close to magnetic yoke body 1 inner chamber side for corresponding S pole or N pole, whole permanent magnet magnetic field direction with towards the side direction of winding of coil 4 vertical, four sides of 4 the most corresponding coils 4 of permanent magnet 6, thus ensure that permanent magnet side is bigger with coil side-fit area, in order to increase electromagnetic force suffered by coil and i.e. increase motor driving force.
As shown in figure 13, lower shell fragment 8 includes the second housing the 81, second inside casing 82 and the second elater 85, second housing 81 is that disjunction is arranged along lower shell fragment 8 center, second inside casing 82 is also that disjunction is arranged along lower shell fragment 8 center, second housing the 81, second inside casing 82 uses herein when being independent two-part non-enclosed structure by its center split, can realize insulation function, it is not necessary to be separately provided insulating part again and realize insulation function, simplify technique and saved part, reduce further cost.
nullSecond inside casing 82 has the second fixing hole 83 for fixing bottom coil holder 54，The peripheral side correspondence coil holder bottom lug 59 near the second housing 81 of second inside casing 82 arranges second and fixes groove 84，Second elater 85 includes eight sections of curved portions bent and three sections of line parts，It is respectively the 9th curved portions 851、Tenth curved portions 852、11st curved portions 853、12nd curved portions 854、13rd curved portions 856、14th curved portions 857、15th curved portions 858、16th curved portions 859、3rd line part 850、4th line part 855 and the 5th line part 860，And the 9th curved portions 851、Tenth curved portions 852、11st curved portions 853、12nd curved portions 854 sequentially becomes the 3rd S type elater portion by the tangent coupling of arc，13rd curved portions 856、14th curved portions 857、15th curved portions 858、16th curved portions 859 sequentially becomes the 4th S type elater portion by the tangent coupling of arc，Second inside casing 82、3rd line part 850、3rd S type elater portion、4th line part 855、4th S type elater portion、5th line part 860、Second housing 81 sequentially connects，Second inside casing 82 and the 3rd line part 850、Second housing 81 all uses arc-shaped transition to be connected with the 5th line part 860，3rd line part 850 and the 3rd S type elater portion、4th line part 855 and the 3rd S type elater portion and the 4th S type elater portion、4th S type elater portion all uses with the 5th line part 860 that straight line is tangent with arc to be coupled.
On the second housing 81, one bending and molding has pole piece 88, by pole piece 88 one-body molded on the second housing 81, decrease the operation welding pole piece 88 on the second housing 81, overcome traditional positive and negative plate high with shell fragment welding process requirement, the problem being difficult to ensure that yields, also saving the use of parts simultaneously, saved cost, second inside casing 82 at these two pole piece 88 places welds connection with initial and the end lines of coil 4 respectively simultaneously.
As shown in Fig. 9 and 13, the present invention changes the first elater 35 and structure of the second elater 85, it is made the most at least to include two S type elater portions in nonlinear arrangement, add the structural stability of shell fragment, make rotor coil holder dynamically can control within 0.12 ° with the angle meansigma methods formed time static at motor process rotor coil holder axis, much smaller than traditional rotor coil holder motor process rotor coil holder axis dynamically with the angle meansigma methods formed time static more than 0.21 °, for ensureing that focus effects produces conclusive effect.It will be appreciated by persons skilled in the art that any there are at least eight sections of curved portions, may be constructed the elater structure that at least two is the S type elater portion of nonlinear arrangement, the most applicable present invention.
In the present embodiment, upper shell fragment 3 and lower shell fragment 8 all use other metallic composite panel such as nickel, copper to make.
The top of the first elater 35 and the second elater 85 is arranged to the consistency of thickness of end, the width at its top to end by the narrow uniform gradient that broadens.By above-mentioned design, it is possible to achieve eliminate stress in coil holder 5 motor process and concentrate purpose.
As shown in figure 12, second pad 7 is arranged between permanent magnet 6 and the second housing 81 of lower shell fragment 8, for the second housing 81 of lower shell fragment 8 is pressed on base 9, the second support ring 71 that second pad 7 includes and the second housing 81 matching form closes, the corner of the second support ring 71 has caved inward pad groove 72.
As shown in figure 14, base 9 centrally disposed base light hole 92, the peripheral corresponding coil holder dust ring 57 of base light hole 92 arranges base dust ring 91, step 93 in the base dust ring of a line propping frame dust ring 57 it is provided between base dust ring 91 and base light hole 92, on base dust ring 91, side away from base light hole 92 center arranges the base groove 94 matched respectively with coil holder double wedge 58 and coil holder bottom lug 59, the pedestal upright post 95 matched with coil holder groove 56 it is provided with in base corner, and the shape of pedestal upright post 95 also matches with the shape of pad groove 72, so that when pedestal upright post 95 is inserted into the yoke column 15 of magnetic yoke body through coil holder groove 56, in passing the second pad 7 can be fixed.
Each frame of yoke side frame 13 is uniformly distributed four yoke protuberances 17, one is arranged for ensureing the ground terminal 11 that magnetic yoke body 1 built-in field is stable on one of them yoke protuberance 17, corresponding yoke protuberance 17 arranges screens groove 96 on base 9 side, so that magnetic yoke body 1 can be integrated with base 9 in clamping, the both sides correspondence pole piece 88 of a screens groove 96 is provided with the pole piece through hole 97 passed through for pole piece 88 wherein.
In the present embodiment, the first elater 35 and the second elater 85 all have four groups, and four group of first elater 35 symmetry is distributed between the first housing 31 and the first inside casing 32, and four group of second elater 85 symmetry is distributed between the second housing 81 and the second inside casing 82.By above-mentioned design, the four groups of elater being symmetrically uniformly arranged, can make in coil holder 5 motor process, often group elater all can produce the centripetal tension force of an equal size, thus ensure that rotor is dynamically minimum with the angle formed time static at motor process rotor coil holder axis, and then ensure focus effects.
Except the coil described in above-described embodiment be shaped as square in addition to, coil can also be tubular or abnormity, or coil is wrapped on coil holder based on coil holder outer wall, and with coil holder formed integrative-structure.
Except the top of the first elater described in above-described embodiment and the second elater is to the consistency of thickness of end, beyond the situation that the width at its top to end is arranged by the narrow uniform gradient that broadens, it is also possible to the uniform gradient that is set to narrow from the width is arranged；Or first the top of elater and the second elater consistent to the width of end, the thickness at its top to end is by thick thinning or arranged by thin thickening uniform gradient.
The assemble method of this Multi-purpose micro voice coil motor, comprises the following steps:
The first step: the side contacted with the first pad 2 by magnetic yoke body 1 is coated with and spreads synthetic resin adhesive, is then installed on the yoke base plate 12 of magnetic yoke body 1 by the first pad 2, and the pad column 22 of the first pad 2 is directed at the corner of yoke side frame 13；
Second step: be encased in magnetic yoke body 1 by upper shell fragment 3, makes the first housing 31 be arranged between the first support ring 21 and yoke column 15, and the first inside casing 32 is arranged in yoke column 15, and the first pad protuberance 23 is directed at the first housing groove 36；
3rd step: applied adhesive in yoke side frame 13, and between pad column, be close to yoke side frame 13 and paste the first magnet the 61, second magnet the 62, the 3rd magnet 63 and the 4th magnet 64；
4th step: continue applied adhesive in yoke side frame 13, then assemble the second pad 7, make four pad grooves 72 of the second pad 7 contact with permanent magnet 6 respectively cooperation；
5th step: then coil 4 is installed at the coil holder outer wall 55 of coil holder 5, and be assembled into one bottom lower shell fragment 8 and the coil holder of coil holder 5 54；
6th step: the coil 4 being assembled into one, coil holder 5 and lower shell fragment 8 are put in magnetic yoke body 1 in the lump, and the second housing 81 of lower shell fragment 8 is put in the second support ring 71 of the second pad 7, match with the first inside casing 32 of upper shell fragment 3 in coil holder top 52, i.e. coil holder top lug 53 is engaged to the first of shell fragment 3 and fixes in groove 34；
7th step: protuberance binding agent at the internal corner of magnetic yoke body 1, then base 9 is snapped on magnetic yoke body 1, base dust ring 91 matches with coil holder dust ring 57, and the end of coil holder dust ring 57 is arranged with step 93 contact in base dust ring, pedestal upright post 95 is bonded as one through the pad groove 72 of 7 four jiaos of the second pad and the pad column 22 of the first pad 2, now, pole piece 88 stretches out outside motor through pole piece through hole 97, ground terminal 11 stretches out outside motor through screens groove, and screens groove 96 and yoke protuberance 17 clamping on magnetic yoke body 1, magnetic yoke body 1 is made to be integrated with base 9 clamping, complete the assembling of whole motor.
Often load in magnetic yoke body 1 before a part all can applied adhesive, so make motor shock resistance and vibration ability strengthen.
Utilize ground terminal 11, can be when motor work, ground terminal 11 ground connection, when there being external electric field to disturb, loop can be formed in whole magnetic yoke body 1, be effectively protected stablizing of built-in field.
And pole piece 88 is set on the second housing 81 of lower shell fragment 8, whole motor input current is lower shell fragment pole piece 88, electric current is inputted by pole piece 88, a ring current is formed in whole coil 4, because of permanent magnet 6 magnetic direction with towards the side direction of winding of coil 4 vertical, i.e. magnetic direction is vertical with the sense of current, so just can be learnt by Ampere law, coil can be by an electromagnetic force being perpendicular to the sense of current and magnetic direction, and this power determines the driving force size of motor.
The know-why of the present invention is described above in association with specific embodiment.These describe the principle being intended merely to explain the present invention, and can not be construed to limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art need not pay performing creative labour can associate other detailed description of the invention of the present invention, within these modes fall within protection scope of the present invention.
Claims (9)
1. a Multi-purpose micro voice coil motor, including magnetic yoke body, the first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment and base, it is characterized in that, described magnetic yoke body and described base cooperate setting, constituting a closing space being used for accommodating described first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment, described magnetic yoke body uses metal material punching press one-body molded；
Described upper shell fragment includes that the first housing, the first inside casing and the first elater, described lower shell fragment include the second housing, the second inside casing and the second elater；
Described first elater includes eight sections of curved portions bent and two line parts, and described line part uses with described curved portions that straight line is tangent with arc to be coupled, and described first elater is connected with described first housing, described first inside casing arc-shaped transition respectively；
Described second elater includes eight sections of curved portions bent and three line parts, and described line part uses with described curved portions that straight line is tangent with arc to be coupled, and described second elater is connected with described second housing, described second inside casing arc-shaped transition respectively；
The top of described first elater and/or the second elater is consistent to the width of end, and the thickness at its top to end is thinning by thickness or is arranged by thin thickening uniform gradient；
Described magnetic yoke body includes square yoke base plate, yoke side frame is set on yoke base plate, described yoke base plate centrally disposed yoke through hole, in described yoke bore periphery and described yoke side frame homonymy annular, four yoke columns are set, four described yoke columns corner with described yoke side frame respectively is set in parallel, on described yoke base plate, described yoke bore periphery near the side of described yoke side frame, yoke groove is set；
The first pad it is assembled with in described magnetic yoke body, described first pad includes the first support ring matched with described yoke base plate, the corner of the corresponding described yoke side frame in described first corner, support ring top arranges pad column, arranges the first pad protuberance in described first support ring by paracentral side.
A kind of Multi-purpose micro voice coil motor the most according to claim 1, it is characterized in that, described upper shell fragment is set in the first support ring of described first pad, described upper shell fragment includes the first housing, first inside casing and the first elater, the corresponding described first pad protuberance in described first housing periphery arranges the first housing groove, first fixing hole of fixing described coil holder is set in described first inside casing, described first fixing hole annular arranges multiple first and fixes groove, described yoke column is through the gap described first housing and the first inside casing, and described upper shell fragment is fixed in described magnetic yoke body.
nullA kind of Multi-purpose micro voice coil motor the most according to claim 2，It is characterized in that，Described coil holder includes bottom coil holder top and coil holder，Described coil holder top is fixed by the first inside casing of upper shell fragment，And the setting of described coil holder top fixes, with the first of described upper shell fragment, the coil holder top lug that groove matches，Between bottom described coil holder top and coil holder, coil holder light hole is set，Between bottom described coil holder top and coil holder, coil holder outer wall is set back to described coil holder light hole，The coil holder groove matched with yoke column it is provided with on described coil holder outer wall，On bottom described coil holder、Coil holder light hole periphery arranges coil holder dust ring，On described coil holder dust ring, the side near described coil holder outer wall arranges coil holder double wedge，It is symmetrical arranged two coil holder bottom lug near coil holder outer wall bottom described coil holder，On described coil holder outer wall, described coil is set.
A kind of Multi-purpose micro voice coil motor the most according to claim 2, it is characterized in that, between described each two pad column, it is close to described yoke side frame described permanent magnet is set, described permanent magnet includes the first magnet, the second magnet, the 3rd magnet and the 4th magnet, described first magnet, the second magnet, the 3rd magnet and the 4th magnet are thin bar magnet, and the magnetic surface of described permanent magnet is parallel with described coil surface.
A kind of Multi-purpose micro voice coil motor the most according to claim 3, it is characterized in that, described lower shell fragment includes the second housing, second inside casing and the second elater, described second housing is that disjunction is arranged along lower shell fragment center, described second inside casing is also that disjunction is arranged along lower shell fragment center, have for fixing the second fixing hole bottom described coil holder in described second inside casing, the corresponding described coil holder bottom lug in the peripheral side near described second housing of described second inside casing arranges second and fixes groove, described second housing arranges two for the pole piece connecing electricity, second inside casing at these two pole piece places welds connection with initial and the end lines of coil respectively.
A kind of Multi-purpose micro voice coil motor the most according to claim 5, it is characterized in that, described second pad is arranged between the second housing of described permanent magnet and described lower shell fragment, for the second housing of described lower shell fragment is pressed on described base, the second support ring that described second pad includes and described second housing matching form closes, the corner of described second support ring has caved inward pad groove.
A kind of Multi-purpose micro voice coil motor the most according to claim 6, it is characterized in that, described base centrally disposed base light hole, the corresponding described coil holder dust ring in described base light hole periphery arranges base dust ring, it is provided for supporting step in the base dust ring of described coil holder dust ring between described base dust ring and described base light hole, on described base dust ring, side away from described base light hole center arranges the base groove matched respectively with coil holder double wedge and coil holder bottom lug, the pedestal upright post of pad groove match with the second pad it is provided with in described base corner.
A kind of Multi-purpose micro voice coil motor the most according to claim 5, it is characterized in that, each frame of described yoke side frame is uniformly distributed four yoke protuberances, one is arranged for ensureing the ground terminal that described magnetic yoke body built-in field is stable on one of them yoke protuberance, corresponding described yoke protuberance arranges screens groove in described chassis side, so that described magnetic yoke body is integrated with described base energy clamping, the corresponding described pole piece in the both sides of a screens groove is provided with the pole piece through hole passed through for described pole piece wherein.
A kind of Multi-purpose micro voice coil motor the most according to claim 5, it is characterized in that, described first elater and the second elater all have four groups, and the first elater symmetry described in four groups is distributed between described first housing and described first inside casing, the second elater symmetry described in four groups is distributed between described second housing and described second inside casing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472465.8A CN102957297B (en) | 2012-11-20 | 2012-11-20 | A kind of Multi-purpose micro voice coil motor |
| PCT/CN2013/087301 WO2014079345A1 (en) | 2012-11-20 | 2013-11-18 | Multipurpose micro voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472465.8A CN102957297B (en) | 2012-11-20 | 2012-11-20 | A kind of Multi-purpose micro voice coil motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102957297A CN102957297A (en) | 2013-03-06 |
| CN102957297B true CN102957297B (en) | 2016-08-03 |
Family
ID=47765667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210472465.8A Active CN102957297B (en) | 2012-11-20 | 2012-11-20 | A kind of Multi-purpose micro voice coil motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102957297B (en) |
| WO (1) | WO2014079345A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957297B (en) * | 2012-11-20 | 2016-08-03 | 辽宁中蓝电子科技有限公司 | A kind of Multi-purpose micro voice coil motor |
| CN104079138A (en) * | 2013-03-26 | 2014-10-01 | 闳晖实业股份有限公司 | Voice coil motor actuator and manufacturing method of voice coil motor actuator |
| CN103354397B (en) * | 2013-06-26 | 2015-09-16 | 宜兴市贵鑫磁电高科技有限公司 | With the voice coil motor of dustproof construction |
| CN105739052B (en) * | 2016-03-23 | 2019-07-09 | 宁波金诚泰电子有限公司 | A kind of optical anti-vibration voice coil motor |
| CN106255018B (en) * | 2016-08-22 | 2019-05-03 | 苏州倍声声学技术有限公司 | A kind of portable bone conduction receiver of telescopic folding type |
| CN116191809B (en) * | 2022-09-07 | 2024-04-09 | 上海镭望光学科技有限公司 | Array voice coil motor suitable for uniformity correction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359084A (en) * | 2008-07-31 | 2009-02-04 | 宁波金诚泰电子有限公司 | Reed for driving mechanism of camera lens |
| CN102121505A (en) * | 2010-01-08 | 2011-07-13 | Lg伊诺特有限公司 | Flat spring and voice coil motor using the same |
| CN202940719U (en) * | 2012-11-20 | 2013-05-15 | 辽宁中蓝电子科技有限公司 | Multipurpose micro voice coil motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0702897D0 (en) * | 2007-02-15 | 2007-03-28 | Johnson Electric Sa | Voice coil motor |
| CN101887157A (en) * | 2009-05-15 | 2010-11-17 | 东莞市盈聚电子科技有限公司 | Driving module for mobile phone lens |
| JP2011080097A (en) * | 2009-10-02 | 2011-04-21 | Seiko Instruments Inc | Alloy for spring, sheet material for spring, and spring member |
| KR101081630B1 (en) * | 2009-11-20 | 2011-11-09 | 엘지이노텍 주식회사 | Voice coil motor |
| CN202405986U (en) * | 2011-12-10 | 2012-08-29 | 东莞市旭业光电科技有限公司 | Voice coil motor and assembling process of voice coil motor |
| CN102957297B (en) * | 2012-11-20 | 2016-08-03 | 辽宁中蓝电子科技有限公司 | A kind of Multi-purpose micro voice coil motor |
-
2012
- 2012-11-20 CN CN201210472465.8A patent/CN102957297B/en active Active
-
2013
- 2013-11-18 WO PCT/CN2013/087301 patent/WO2014079345A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359084A (en) * | 2008-07-31 | 2009-02-04 | 宁波金诚泰电子有限公司 | Reed for driving mechanism of camera lens |
| CN102121505A (en) * | 2010-01-08 | 2011-07-13 | Lg伊诺特有限公司 | Flat spring and voice coil motor using the same |
| CN202940719U (en) * | 2012-11-20 | 2013-05-15 | 辽宁中蓝电子科技有限公司 | Multipurpose micro voice coil motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014079345A1 (en) | 2014-05-30 |
| CN102957297A (en) | 2013-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102957297B (en) | A kind of Multi-purpose micro voice coil motor | |
| CN108333709B (en) | Lens driving device | |
| CN105141105B (en) | Voice coil motor | |
| TWI484730B (en) | Voice coil motor actuator and image capturing device | |
| CN105763016A (en) | Voice coil motor and driving method thereof | |
| CN105262937A (en) | Unit for actuating lens, camera module, and optical apparatus | |
| CN104702079A (en) | Voice coil motor | |
| US9395510B2 (en) | Lens holding device for camera module | |
| WO2022088420A1 (en) | Lens driving device | |
| CN108627947A (en) | Lens driver | |
| CN108508566B (en) | Lens driving device | |
| WO2022121051A1 (en) | Lens driving device and electronic terminal | |
| CN202260956U (en) | Flat elastic piece for voice coil motor | |
| CN110058378B (en) | Carrier for periscope type lens driving device | |
| CN108508568B (en) | Lens driving device and base thereof | |
| CN202940719U (en) | Multipurpose micro voice coil motor | |
| TWI439015B (en) | Voice coil motor | |
| WO2022067921A1 (en) | Linear motor and electronic device | |
| CN208367303U (en) | Lens drive motor, camera and mobile terminal apparatus | |
| CN113985563B (en) | Double-support elastic piece type anti-shake system, lens driving device and camera equipment | |
| CN214675366U (en) | Substrate OIS magnetic-driven mechanism and camera module adopting same | |
| CN102208858A (en) | Voice coil motor actuator and image taking device | |
| JP5471412B2 (en) | Lens holding device | |
| CN208110139U (en) | Lens driver | |
| CN208110143U (en) | Lens driver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201210 Address after: No.388, North Zhonghua Road, Xinglongtai District, Panjin City, Liaoning Province Patentee after: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Address before: 124010 Liaoning Zhonglan Electronic Technology Co., Ltd Patentee before: LIAONING ZHONGLAN ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Multipurpose miniature voice coil motor Effective date of registration: 20210726 Granted publication date: 20160803 Pledgee: China Construction Bank Corporation Panjin branch Pledgor: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Registration number: Y2021210000049 |