CN202940719U - Multipurpose micro voice coil motor - Google Patents
Multipurpose micro voice coil motor Download PDFInfo
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- CN202940719U CN202940719U CN 201220617661 CN201220617661U CN202940719U CN 202940719 U CN202940719 U CN 202940719U CN 201220617661 CN201220617661 CN 201220617661 CN 201220617661 U CN201220617661 U CN 201220617661U CN 202940719 U CN202940719 U CN 202940719U
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- coil holder
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- elater
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Abstract
The utility model discloses a multipurpose micro voice coil motor, comprising a magnet yoke body, a first gasket, an upper spring, a coil, a coil holder, a permanent magnet, a second gasket, a lower spring, and a base. The magnet yoke body and the base are arranged in a cooperation manner, so that an enclosure space holding the first gasket, an upper spring, a coil, a coil holder, a permanent magnet, a second gasket, a lower spring is formed. The magnet yoke body is stamped all in one by a metal material. Through using the magnet yoke body made of the metal material to cover a whole product and cooperation of the base and the magnet yoke body, motor products are sealed inside the magnet yoke body, and thus strength of the motor is enhanced. Since other housings are not used to cover the motor, inner space of the motor is increased, and dimensions of the permanent magnet and the coil are increased, thereby increasing motor driving for manufacturing process and assembling is reduced.
Description
Technical field
The utility model relates to the voice coil motor technical field, relates in particular to a kind of multi-purposed miniature voice coil motor for the camera automatic focusing.
Background technology
Voice coil motor is a kind of miniature displacement drive motor, the characteristics such as the rotor travel displacement is little, small product size is little, fast response time, with low cost, low in energy consumption, travel displacement is accurate that it has.Because voice coil motor has above-mentioned characteristic, so the first-class minitype optical device of camera, the camera in notebook computer, the shooting in panel computer in mobile phone uses voice coil motor to make actuator recently, in camera, camera lens moves along optical axis direction in order to be used for driving, thereby realizes automatic focusing.
Voice coil motor utilizes the Ampere's law left hand rule: namely hot-wire coil can be subject to one perpendicular to the power of magnetic direction and the sense of current in the magnetic field that permanent magnet produces, and changes the stressed size of energization solenoid by changing the input current size.Voice coil motor utilizes this principle, and in coil, size of current changes the suffered electromagnetic force of solenoid by changing, and then realizes that the displacement of change solenoid in magnetic field reaches other element of motor-driven and do mechanical movement.Current chip drives input current size resolution and can do very little very accurately, therefore voice coil motor has very high precision controlling in displacement, make like this voice coil motor in the regulating and controlling camera model between eyeglass and imageing sensor apart from the time very accurate.
For example, Chinese patent literature CN 102347679A discloses a kind of " voice coil motor ", and it comprises: rotor, the coil block that comprises be used to the cylindrical wires cylinder that holds camera lens and both ends open and comprise the coil that is wrapped in described line cylinder periphery; Stator comprises the cylindrical yoke that is formed be used to the opening that exposes camera lens, a plurality ofly is placed on inner and relative with the described coil block magnet of described yoke and is placed on described yoke inside with the magnet fixture of fixing described a plurality of magnets; And elastic component, flexibly support described line cylinder.Adopt the voice coil motor of this structure to have following defective:
1, the first elastic component only adopts simple circuitous configuration with the connection Flexible element (being elater) of being connected in elastic component, make in the motor movement process, the elater structure can only produce less centripetal tension, thereby when making rotor coil holder axis the dynamic and stalic state, formed angle is larger, generally reach (more than 0.21 °) more than 13 minutes at deviation angle, further impact focusing effect causes the high-pixel mobile phone quality of taking pictures also very poor;
2, adopt housing that plastics make to be connected with the yoke top, and cover the upper end of yoke, the lower end of yoke is connected with substrate, because the yoke top is covered by plastic casing, make motor housing can not play the electromagnetic interference that near the various elements of shielding produce, will affect like this precision of motor operation, simultaneously because housing is plastic material, therefore intensity is all not enough aspect shock resistance and vibration;
3, increasing a metal outside yoke hides case yoke Hull housing is covered in the lump and is connected with substrate, so not only increased the cost of motor, make assembling and processed complex, simultaneously because the size of whole motor is certain, increase hiding case will inevitably make the motor internal space diminish, cause motor permanent magnet and coil dimension to diminish, thereby motor-driven power is reduced, affect motor performance;
4, the contact structures of line cylinder and substrate are the structure of protuberance and plane contact, and the dust and other impurities at motor internal will enter on the sensitive chip of camera by the gap between line cylinder protuberance and substrate like this, affects shooting quality;
5, the pole piece on the first elastic component is to adopt welding manner to receive on the second elastic component, due to the small volume of pole piece, difficulty and workload during the welding pole piece are very large, and welding quality can't guarantee, and the pole piece intensity of welding is often not high, and useful life is lower.
The utility model content
A purpose of the present utility model, be to provide a kind of multi-purposed miniature voice coil motor, by with the metal magnetic yoke body as motor housing, make the motor manufacturing procedure simpler, and when motor size is certain, can increase the cooperation area of coil and permanent magnet, thereby improve motor-driven power.
Another purpose of the present utility model; be to provide a kind of multi-purposed miniature voice coil motor; by magnetic yoke body being adopted the metal material punching press one-body molded; can increase the intensity of whole motor; the safety of the part of protection motor internal, and the magnetic yoke body that metal material is made can be good at the Electromagnetic Interference that near the various elements of shield electric machine produce.
Another purpose of the present utility model, be to provide a kind of multi-purposed miniature voice coil motor, by changing the elater structure of upper shell fragment and lower shell fragment, in focus process, this elater can produce larger centripetal tension, thereby when making rotor coil holder axis the dynamic and stalic state, formed angle is minimum, and then reaches the better purpose of shooting effect.
Another purpose of the present utility model, be to provide a kind of multi-purposed miniature voice coil motor, by with many elater symmetries, evenly arrange, make each elater produce the centripetal tension of relatively large formed objects in focus process, when further having guaranteed rotor coil holder axis the dynamic and stalic state, formed angle is minimum.
For reaching this purpose, the utility model by the following technical solutions:
A kind of multi-purposed miniature voice coil motor, comprise magnetic yoke body, the first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment and base, the setting that cooperatively interacts of described magnetic yoke body and described base, consist of an enclosure space that is used for holding described the first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment, described magnetic yoke body adopts the metal material punching press one-body molded.
A kind of preferred version as the multi-purposed miniature voice coil motor, described magnetic yoke body comprises rectangle or square yoke base plate, on described yoke base plate, the yoke side frame is set, described yoke base plate center arranges the yoke through hole, described yoke bore periphery, with described yoke side frame homonymy annular a plurality of yoke columns are set, described yoke column and described yoke side frame are set in parallel, on described yoke base plate, the yoke bore periphery arranges the yoke groove near a side of described yoke side frame;
Described the first pad is set in described magnetic yoke body, described the first pad comprises the first support ring that matches with the yoke base plate, four jiaos of corresponding described yoke side frames in four jiaos, described the first support ring top arrange the pad column, by a paracentral side, the first pad protuberance are set at described the first support ring.
Further, adopt adhesive to be bonded as one between described magnetic yoke body and described the first pad.
Preferably, described adhesive is synthetic resin adhesive.
Further, described magnetic yoke body adopts high magnetic conduction, good ductile metal material to make.
Be more preferably, described magnetic yoke body adopts the thin steel sheet punching press to make.
Be more preferably, described magnetic yoke body adopts slim copper coin punching press to make.
Further, described the first pad adopts insulating material to make.
Preferably, described the first pad adopts the direct injection mo(u)lding of plastics.
a kind of preferred version as the multi-purposed miniature voice coil motor, described upper shell fragment is set in the first support ring of described the first pad, described upper shell fragment comprises the first housing, the first inside casing and the first elater, peripheral corresponding described the first pad protuberance of described the first housing arranges the first housing groove, the first fixing hole of fixing described coil holder is set in described the first inside casing, in described the first fixing hole, annular arranges a plurality of the first holddown grooves, described yoke column passes the gap between described the first housing and the first inside casing, and described upper shell fragment is fixed in described magnetic yoke body, described the first elater comprises curved portions and two line parts of at least six sections bendings, and described line part and described curved portions adopt straight line and the tangent coupling of arc, described the first elater respectively with described the first housing, described the first inside casing arc-shaped transition connects.
preferably, described the first elater comprises curved portions and two sections line parts of eight sections bendings, is respectively the first curved portions, the second curved portions, the 3rd curved portions, the 4th curved portions, the 5th curved portions, the 6th curved portions, the 7th curved portions, the 8th curved portions, the first line part and the second line part, and described the first curved portions, the second curved portions, the 3rd curved portions and the 4th curved portions sequentially become a S type elater section, described the 5th curved portions by the tangent coupling of arc, the 6th curved portions, the 7th curved portions and the 8th curved portions sequentially become the 2nd S type elater section, described the first inside casing by the tangent coupling of arc, described the first line part, the one S type elater section, the 2nd S type elater section, the second line part, described the first housing sequentially connects, described the first inside casing and described the first line part, the first housing all adopts arc-shaped transition to be connected with described the second line part, described the first line part and a described S type elater section, described the second line part and described the 2nd S type elater section all adopt straight line and the tangent coupling of arc, and a described S type elater section and the 2nd S type elater section adopt arc and the tangent coupling of arc.
a kind of preferred version as the multi-purposed miniature voice coil motor, described coil holder comprises bottom coil holder top and coil holder, described coil holder top is fixed by the first inside casing of upper shell fragment, and the coil holder top lug that described coil holder top arranges and the first holddown groove of described upper shell fragment is complementary, between bottom described coil holder top and coil holder, the coil holder light hole is set, back to described coil holder light hole, the coil holder outer wall is set between bottom described coil holder top and coil holder, be provided with the coil holder groove that matches with the yoke column on described coil holder outer wall, on bottom described coil holder, coil holder light hole periphery arranges the coil holder dust ring, a side near described coil holder outer wall on described coil holder dust ring arranges the coil holder double wedge, close coil holder outer wall is symmetrical arranged two coil holder bottom lug in described coil holder bottom, on described coil holder outer wall, described coil is set.
Preferably, described coil holder adopts synthetic resin material single injection-molded, like this coil holder have precision size, thermal coefficient of expansion little, have electric insulation, without dust produce, the characteristic such as quick production in enormous quantities.
Preferably, described coil is set to tubular or square or special-shaped.
Be more preferably, described coil take described coil holder outer wall as the basis is wrapped in described coil holder on, and form integrative-structure with described coil holder.
A kind of preferred version as the multi-purposed miniature voice coil motor, between described every two pad columns, be close to described yoke side frame described permanent magnet be set, described permanent magnet comprises the first magnet, the second magnet, the 3rd magnet and the 4th magnet, described the 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 preferred version as the multi-purposed miniature voice coil motor, described lower shell fragment comprises the second housing, the second inside casing and the second elater, described the second housing is the disjunction setting along lower shell fragment center, described the second inside casing also is the disjunction setting along lower shell fragment center, has the second fixing hole for fixing described coil holder bottom in described the second inside casing, the corresponding described coil holder bottom lug of the peripheral side near described the second housing of described the second inside casing arranges the second holddown groove, described the second elater comprises curved portions and two line parts of at least six sections bendings, and described line part and described curved portions adopt straight line and the tangent coupling of arc, described the second elater respectively with described the second housing, described the second inside casing arc-shaped transition connects, two pole pieces that are used for connecing electricity are set on described the second housing, second inside casing at these two pole piece places is connected with initial and the end lines welding of coil respectively.
When the second housing, when the second inside casing employing is independent two-part non-enclosed structure by its center split, can realize insulation function, need not that insulating part is set separately again and realize insulation function, simplified technique and saved part, further reduced cost.
Further, described the second housing and described pole piece are the integral type structure, and adopt bending and molding.
By one-body molded pole piece on the second housing, reduced the operation of welding pole piece on the second housing, overcome traditional positive and negative terminal and shell fragment welding process requirement high, be difficult to guarantee the problem of yields; Cost has been saved in the use of also having saved parts simultaneously.
preferably, described the second elater comprises curved portions and three sections line parts of six sections bendings, is respectively the 9th curved portions, the tenth curved portions, the 11 curved portions, the 12 curved portions, the 13 curved portions, the 14 curved portions, the 15 curved portions, the 16 curved portions, the 3rd line part, the 4th line part and the 5th line part, and described the 9th curved portions, the tenth curved portions, the 11 curved portions, the 12 curved portions sequentially becomes Three S's type elater section, described the 13 curved portions by the tangent coupling of arc, the 14 curved portions, the 15 curved portions, the 16 curved portions sequentially becomes the 4th S type elater section, described the second inside casing by the tangent coupling of arc, described the 3rd line part, Three S's type elater section, the 4th line part, the 4th S type elater section, described the 5th line part, described the second housing sequentially connects, described the second inside casing and described the 3rd line part, the second housing all adopts arc-shaped transition to be connected with described the 5th line part, described the 3rd line part and described Three S's type elater section, described the 4th line part and described Three S's type elater section and the 4th S type elater section, described the 4th S type elater section and described the 5th line part all adopt straight line and the tangent coupling of arc.
By changing the structure of the first elater and the second elater, make it structurally comprise at least two S type elater sections that are nonlinear arrangement, increased the structural stability of shell fragment, make the rotor coil holder in motion process during coil holder axis the dynamic and stalic state formed angle mean value can be controlled in 0.12 °, much smaller than traditional rotor coil holder in motion process during coil holder axis the dynamic and stalic state formed angle mean value more than 0.21 °, produced unforeseeable technique effect, for guaranteeing that the focusing effect produces conclusive effect.It will be appreciated by persons skilled in the art that any at least six sections curved portions that have, can consist of the elater structure of at least two S type elater sections that are nonlinear arrangement, all applicable the utility model.
Be more preferably, described upper shell fragment and lower shell fragment all adopt other metallic composite panel such as nickel, copper to make.
Preferably, the top of described the first elater and/or the second elater is to the consistency of thickness of end, and its top is broadened or by the wide uniform gradient setting that narrows down by narrow to the width of end;
Or the top of described the first elater and/or the second elater is consistent to the width of end, and its top arranges by thick attenuation or by thin thickening uniform gradient to the thickness of end.
By above-mentioned design, can realize eliminating elater stress and concentrate purpose in the coil holder motion process.
A kind of preferred version as the multi-purposed miniature voice coil motor, described the second pad is arranged between the second housing of described permanent magnet and described lower shell fragment, be used for the second housing of described lower shell fragment is pressed on described base, described the second pad comprises the second support ring that matches with described the second housing shape, and four angle sunken insides of described the second support ring have the pad groove.
a kind of preferred version as the multi-purposed miniature voice coil motor, described base center arranges the base light hole, the peripheral corresponding described coil holder dust ring of described base light hole arranges the base dust ring, be provided for supporting the interior step of base dust ring of described coil holder dust ring between described base dust ring and described base light hole, on described base dust ring, the base groove that is complementary with coil holder double wedge and coil holder bottom lug is set respectively away from the side at described base light hole center, be provided with four jiaos of described bases the base column that the pad groove with the second pad is complementary.
A kind of preferred version as the multi-purposed miniature voice coil motor, four yoke protuberances evenly distribute on each frame of described yoke side frame, arrange one on one of them yoke protuberance and be used for guaranteeing the stable earth terminal of described magnetic yoke body built-in field, corresponding described yoke protuberance arranges the screens groove on described chassis side, so that described magnetic yoke body and described base can be integrated in clamping, the corresponding described pole piece in the both sides of a screens groove is provided with the pole piece through hole that passes through for described pole piece therein.
A kind of preferred version as the multi-purposed miniature voice coil motor, described the first elater and the second elater all have four groups, and four groups of described first elater symmetries are distributed between described the first housing and described the first inside casing, and four groups of described second elater symmetries are distributed between described the second housing and described the second inside casing.
By above-mentioned design, be four groups of elater that arrange symmetrically and evenly, can make in the coil holder motion process, every group of elater all can produce the centripetal tension force of an equal size, thereby guarantee coil holder in motion process during coil holder axis the dynamic and stalic state formed angle minimum, and then guarantee the focusing effect.
The beneficial effects of the utility model are:
1, cover whole product by the magnetic yoke body that utilizes metal material, and utilize base to match with magnetic yoke body, motor product is sealed in magnetic yoke body inside, increased like this intensity of motor, and additionally do not adopt again other housings to cover motor, make the space of motor internal increase, permanent magnet and coil dimension increase, and then increase motor-driven power, improve motor performance, and magnetic yoke body bears a plurality of roles in motor, further reduced the quantity of motor component part, reduced manufacturing process and assembly difficulty;
2, by adopt special elater structure in voice coil motor of the present utility model, can make motor in running, during rotor coil holder axis the dynamic and stalic state, formed angle mean value can be controlled in 0.12 °, because camera lens is fixed on the rotor coil holder, make camera lens in focus process, during the camera lens optical axis the dynamic and stalic state, formed angle reaches minimum, has guaranteed the focusing effect;
3, by the deep side of the base light hole on base, the base dust ring is set, and at the peripheral corresponding base dust ring of the coil holder light hole of coil holder, the coil holder dust ring is set, the foreign matter that can effectively prevent voice coil motor inside drops on sensitive chip, further improves the shooting quality of video camera.
Description of drawings
Fig. 1 is the blast structural representation of multi-purposed miniature voice coil motor described in the utility model;
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 that the master of magnetic yoke body in Fig. 1 looks schematic diagram;
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, earth 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, the first holddown groove; 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, coil holder bottom; 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, the second holddown groove; 85, the second elater; 850, the 3rd line part; 851, the 9th curved portions; 852, the tenth curved portions; 853, the 11 curved portions; 854, the 12 curved portions; 855, the 4th line part; 856, the 13 curved portions; 857, the 14 curved portions; 858, the 15 curved portions; 859, the 16 curved portions; 860, the 5th line part; 88, pole piece;
9, base; 91, base dust ring; 92, base light hole; 93, step in the base dust ring; 94, base groove; 95, base column; 96, screens groove; 97, pole piece through hole.
Embodiment
As shown in Fig. 1～14, the multi-purposed miniature voice coil motor described in this embodiment comprises magnetic yoke body 1, the first pad 2, upper shell fragment 3, coil 4, coil holder 5, permanent magnet 6, the second pad 7, lower shell fragment 8 and base 9.
As shown in Fig. 5～6, magnetic yoke body 1 comprises square yoke base plate 12, yoke side frame 13 is set on yoke base plate 12, yoke base plate 12 centers arrange yoke through hole 14, yoke through hole 14 peripheries, with yoke side frame 13 homonymy annulars four yoke columns 15 are set, four yoke columns 15 are set in parallel with four jiaos of yoke side frame 13 respectively, on yoke base plate 12, yoke through hole 14 peripheries arrange yoke groove 16 near a side of yoke side frames 13.
In the present embodiment, magnetic yoke body 1 adopts the metal of high magnetic conduction, good ductility to make, and preferably is made of copper.
As shown in Figure 7, be assembled with the first pad 2 in magnetic yoke body 1, the first pad 2 comprises the first support ring 21 that matches with yoke base plate 12, four jiaos of the first four jiaos of corresponding yoke side frames 13 in support ring 21 top arrange pad column 22, by a paracentral side, the first pad protuberance 23 are set at the first support ring 21.
In the present embodiment, the first pad 2 adopts the direct injection mo(u)lding of plastics.
as shown in Figure 9, upper shell fragment 3 comprises the first housing 31, the first inside casing 32 and the first elater 35, the first peripheral corresponding the first pad protuberance 23 of housing 31 arranges the first housing groove 36, interior fixedly the first fixing hole 33 of coil holder 5 that arranges of the first inside casing 32, uniform four the first holddown grooves 34 of the first interior annular of fixing hole 33, yoke column 15 passes the gap between the first housing 31 and the first inside casing 32, and upper shell fragment 3 is fixed in magnetic yoke body 1, the first elater 35 comprises curved portions and two sections line parts of eight sections bendings, is respectively the first curved portions 351, the second curved portions 352, the 3rd curved portions 353, the 4th curved portions 354, the 5th curved portions 355, the 6th curved portions 356, the 7th curved portions 357, the 8th curved portions 358, the first line part 350 and the second line part 359, and the first curved portions 351, the second curved portions 352, the 3rd curved portions 353 and the 4th curved portions 354 sequentially become a S type elater section, the 5th curved portions 355 by the tangent coupling of arc, the 6th curved portions 356, the 7th curved portions 357 and the 8th curved portions 358 sequentially become the 2nd S type elater section, the first inside casing 32 by the tangent coupling of arc, the first line part 350, the one S type elater section, the 2nd S type elater section, the second line part 359, the first housing 31 sequentially connects, the first inside casing 32 and the first line part 350, the first housing 31 all adopts arc-shaped transition to be connected with the second line part 359, the first line part 350 and a S type elater section, the second line part 359 and the 2nd S type elater section all adopt straight line and the tangent coupling of arc, and a S type elater section and the 2nd S type elater section adopt arc and the tangent coupling of arc.
The 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 space between the first housing 31 and the first inside casing 32.
as shown in FIG. 10 and 11, coil holder 5 comprises coil holder top 52 and coil holder bottom 54, coil holder top 52 is fixed by the first inside casing 32 of upper shell fragment 3, and the coil holder top lug 53 that coil holder top 52 arranges and the first holddown groove 34 of upper shell fragment 3 is complementary, between 54, coil holder light hole 51 is set bottom coil holder top 52 and coil holder, back to coil holder light hole 51, coil holder outer wall 55 is set between 53 bottom coil holder top 52 and coil holder, be provided with the coil holder groove 56 that matches with yoke column 15 on coil holder outer wall 55, on coil holder bottom 54, coil holder light hole 51 peripheries arrange coil holder dust ring 57, a side near coil holder outer wall 55 on coil holder dust ring 57 arranges coil holder double wedge 58, 54 are symmetrical arranged two coil holder bottom lug 59 near coil holder outer walls 55 bottom coil holder, coil 4 is set on coil holder outer wall 55, coil 4 adopts square frame structure.
In the present embodiment, coil holder 5 adopts synthetic resin material single injection-moldeds, like this coil holder 5 have precision size, thermal coefficient of expansion little, have electric insulation, without dust produce, the characteristic such as quick production in enormous quantities.
As shown in Figure 8, between every two pad columns 22, be close to yoke side frame 13 these not shown permanent magnets 6 of permanent magnets 6(be installed), permanent magnet 6 comprises the first magnet 61, the second magnet 62, the 3rd magnet 63 and the 4th magnet 64, the first magnet 61, the second magnet 62, the 3rd magnet 63 and the 4th magnet 64 are thin bar magnet, the parallel sided of the magnetic surface of permanent magnet 6 and coil 4.
As shown in figure 13, lower shell fragment 8 comprises the second housing 81, the second inside casing 82 and the second elater 85, the second housing 81 is the disjunction setting along lower shell fragment 8 centers, the second inside casing 82 also is the disjunction setting along lower shell fragment 8 centers, the second housing 81, the second inside casing 82 adopt when being independent two-part non-enclosed structure by its center split herein, can realize insulation function, need not that insulating part is set separately again and realize insulation function, simplified technique and saved part, further having reduced cost.
the second inside casing 82 has the second fixing hole 83 for fixing coil holder bottom 54, the second corresponding coil holder bottom lug 59 of the peripheral side near the second housing 81 of inside casing 82 arranges the second holddown groove 84, the second elater 85 comprises curved portions and three sections line parts of six sections bendings, is respectively the 9th curved portions 851, the tenth curved portions 852, the 11 curved portions 853, the 12 curved portions 854, the 13 curved portions 856, the 14 curved portions 857, the 15 curved portions 858, the 16 curved portions 859, the 3rd line part 850, the 4th line part 855 and the 5th line part 860, and the 9th curved portions 851, the tenth curved portions 852, the 11 curved portions 853, the 12 curved portions 854 sequentially becomes Three S's type elater section, the 13 curved portions 856 by the tangent coupling of arc, the 14 curved portions 857, the 15 curved portions 858, the 16 curved portions 859 sequentially becomes the 4th S type elater section, the second inside casing 82 by the tangent coupling of arc, the 3rd line part 850, Three S's type elater section, the 4th line part 855, the 4th S type elater section, the 5th line part 860, the second housing 81 sequentially connects, the second inside casing 82 and the 3rd line part 850, the second housing 81 all adopts arc-shaped transition to be connected with the 5th line part 860, the 3rd line part 850 and Three S's type elater section, the 4th line part 855 and Three S's type elater section and the 4th S type elater section, the 4th S type elater section and the 5th line part 860 all adopt straight line and the tangent coupling of arc.
The one bending and molding has pole piece 88 on the second housing 81, by one-body molded pole piece 88 on the second housing 81, reduced the operation of welding pole piece 88 on the second housing 81, overcome traditional positive and negative plate and the shell fragment welding process requirement is high, be difficult to guarantee the problem of yields, cost has been saved in the use of simultaneously also having saved parts, and second inside casing 82 at these two pole piece 88 places is connected with initial and the end lines welding of coil 4 respectively simultaneously.
as shown in Fig. 9 and 13, the utility model has changed the structure of the first elater 35 and the second elater 85, make it structurally comprise at least two S type elater sections that are nonlinear arrangement, increased the structural stability of shell fragment, make rotor coil holder formed angle mean value when motion process rotor coil holder axis the dynamic and stalic state can be controlled in 0.12 °, much smaller than traditional rotor coil holder when the motion process rotor coil holder axis the dynamic and stalic state formed angle mean value more than 0.21 °, for guaranteeing that the focusing effect produces conclusive effect.It will be appreciated by persons skilled in the art that any at least eight sections curved portions that have, can consist of the elater structure of at least two S type elater sections that are nonlinear arrangement, all applicable the utility model.
In the present embodiment, upper shell fragment 3 and lower shell fragment 8 all adopt other metallic composite panel such as nickel, copper to make.
The top of the first elater 35 and the second elater 85 is to the consistency of thickness of end, its top to the width of end by the narrow uniform gradient setting that broadens.By above-mentioned design, can realize the concentrated purpose that eliminates stress in coil holder 5 motion processes.
As shown in figure 12, the second pad 7 is arranged between the second housing 81 of permanent magnet 6 and lower shell fragment 8, be used for the second housing 81 of lower shell fragment 8 is pressed on base 9, the second pad 7 comprises that four angle sunken insides of the second support ring 71, the second support rings 71 that match with the second housing 81 shapes have pad groove 72.
as shown in figure 14, base 9 centers arrange base light hole 92, the peripheral corresponding coil holder dust ring 57 of base light hole 92 arranges base dust ring 91, be provided for supporting the interior step 93 of base dust ring of coil holder dust ring 57 between base dust ring 91 and base light hole 92, on base dust ring 91, the base groove 94 that is complementary with coil holder double wedge 58 and coil holder bottom lug 59 is set respectively away from the side at base light hole 92 centers, be provided with the base column 95 that is complementary with coil holder groove 56 four jiaos of bases, and the shape of the shape of base column 95 and pad groove 72 also is complementary, so that when base column 95 passes coil holder groove 56 and is inserted into the yoke column 15 of magnetic yoke body, can be in passing that the second pad 7 is fixing.
Four yoke protuberances 17 evenly distribute on each frame of yoke side frame 13, arrange one on one of them yoke protuberance 17 and be used for guaranteeing the stable earth terminal 11 of magnetic yoke body 1 built-in field, corresponding yoke protuberance 17 arranges screens groove 96 on base 9 sides, so that magnetic yoke body 1 can be integrated with base 9 in clamping, the corresponding pole piece 88 in the both sides of a screens groove 96 is provided with the pole piece through hole 97 that passes through for pole piece 88 therein.
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 be 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, be four groups of elater that arrange symmetrically and evenly, can make in coil holder 5 motion processes, every group of elater all can produce the centripetal tension force of an equal size, thereby guarantee that rotor formed angle when motion process rotor coil holder axis the dynamic and stalic state is minimum, and then guarantee the focusing effect.
Except being shaped as of the described coil of above-described embodiment was square, coil can also be tubular or abnormity, or coil is wrapped on coil holder as the basis take the coil holder outer wall, and formed integrative-structure with coil holder.
Except the top of described the first elater of above-described embodiment and the second elater consistency of thickness to end, beyond the situation that its top is arranged by the narrow uniform gradient that broadens to the width of end, can also be set to by the wide uniform gradient setting that narrows down; Or the top of first elater and the second elater is consistent to the width of end, and its top arranges by thick attenuation or by thin thickening uniform gradient to the thickness of end all can.
The assemble method of this multi-purposed miniature voice coil motor comprises the following steps:
The first step: magnetic yoke body 1 and the contacted side of the first pad 2 are coated with spread synthetic resin adhesive, then the first pad 2 is installed on the yoke base plate 12 of magnetic yoke body 1, and the pad column 22 of the first pad 2 is aimed at four jiaos of yoke side frames 13;
Second step: upper shell fragment 3 is encased in magnetic yoke body 1, the first housing 31 is 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 aimed at the first housing groove 36;
The 3rd step: at the interior coating binding agent of yoke side frame 13, and between the pad column, be close to yoke side frame 13 and paste the first magnets 61, the second magnet 62, the 3rd magnet 63 and the 4th magnet 64;
The 4th step: at the interior continuation of yoke side frame 13 coating binding agent, then assemble the second pad 7, make the cooperation that contacts with permanent magnet 6 respectively of four pad grooves 72 of the second pad 7;
The 5th step: then coil 4 is installed to coil holder outer wall 55 places of coil holder 5, and the coil holder bottom 54 of lower shell fragment 8 and coil holder 5 is assembled into one;
The 6th step: the coil 4, coil holder 5 and the lower shell fragment 8 that are assembled into one are put in magnetic yoke body 1 in the lump, and the second housing 81 of lower shell fragment 8 is put on 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, namely coil holder top lug 53 is engaged in the first holddown groove 34 of shell fragment 3;
the 7th step: at the inner four jiaos of place's protuberance binding agents 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 step 93 contact settings in the end of coil holder dust ring 57 and base dust ring, base column 95 passes the pad groove 72 of 7 four jiaos, the second pad and the pad column 22 of the first pad 2 is bonded as one, at this moment, pole piece 88 passes pole piece through hole 97 and stretches out outside motor, earth terminal 11 passes the screens groove and stretches out outside motor, and yoke protuberance 17 clampings on screens groove 96 and magnetic yoke body 1, magnetic yoke body 1 and base 9 clampings are integrated, complete the assembling of whole motor.
All can be coated with binding agent before the interior part of often packing into of magnetic yoke body 1, make like this motor shock resistance and vibration ability strengthen.
Utilize earth terminal 11, can be when machine operation, earth terminal 11 ground connection when having external electric field to disturb, can in the interior formation of whole magnetic yoke body 1 loop, effectively be protected the stable 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 by pole piece 88 inputs, at ring current of the interior formation of whole coil 4, because of the magnetic direction of permanent magnet 6 with towards the side direction of winding of coil 4 vertical, namely magnetic direction is vertical with the sense of current, just can learn by Ampere's law like this, coil can be subject to one perpendicular to the electromagnetic force of the sense of current and magnetic direction, and this power determines the actuating force size of motor.
Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described just in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection range.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, within these modes all will fall into protection range of the present utility model.
Claims (10)
1. multi-purposed miniature voice coil motor, comprise 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, the setting that cooperatively interacts of described magnetic yoke body and described base, consist of an enclosure space that is used for holding described the first pad, upper shell fragment, coil, coil holder, permanent magnet, the second pad, lower shell fragment, described magnetic yoke body adopts the metal material punching press one-body molded.
2. a kind of multi-purposed miniature voice coil motor according to claim 1, it is characterized in that, described magnetic yoke body comprises rectangle or square yoke base plate, on described yoke base plate, the yoke side frame is set, described yoke base plate center arranges the yoke through hole, described yoke bore periphery, with described yoke side frame homonymy annular a plurality of yoke columns are set, described yoke column and described yoke side frame are set in parallel, on described yoke base plate, the yoke bore periphery arranges the yoke groove near a side of described yoke side frame;
Described the first pad is set in described magnetic yoke body, described the first pad comprises the first support ring that matches with the yoke base plate, four jiaos of corresponding described yoke side frames in four jiaos, described the first support ring top arrange the pad column, by a paracentral side, the first pad protuberance are set at described the first support ring.
3. a kind of multi-purposed miniature voice coil motor according to claim 2, it is characterized in that, described upper shell fragment is set in the first support ring of described the first pad, described upper shell fragment comprises the first housing, the first inside casing and the first elater, peripheral corresponding described the first pad protuberance of described the first housing arranges the first housing groove, the first fixing hole of fixing described coil holder is set in described the first inside casing, in described the first fixing hole, annular arranges a plurality of the first holddown grooves, described yoke column passes the gap between described the first housing and the first inside casing, and described upper shell fragment is fixed in described magnetic yoke body, described the first elater comprises curved portions and two line parts of at least six sections bendings, and described line part and described curved portions adopt straight line and the tangent coupling of arc, described the first elater respectively with described the first housing, described the first inside casing arc-shaped transition connects.
4. a kind of multi-purposed miniature voice coil motor according to claim 3, it is characterized in that, described coil holder comprises bottom coil holder top and coil holder, described coil holder top is fixed by the first inside casing of upper shell fragment, and the coil holder top lug that described coil holder top arranges and the first holddown groove of described upper shell fragment is complementary, between bottom described coil holder top and coil holder, the coil holder light hole is set, back to described coil holder light hole, the coil holder outer wall is set between bottom described coil holder top and coil holder, be provided with the coil holder groove that matches with the yoke column on described coil holder outer wall, on bottom described coil holder, coil holder light hole periphery arranges the coil holder dust ring, a side near described coil holder outer wall on described coil holder dust ring arranges the coil holder double wedge, close coil holder outer wall is symmetrical arranged two coil holder bottom lug in described coil holder bottom, on described coil holder outer wall, described coil is set.
5. a kind of multi-purposed miniature voice coil motor according to claim 2, it is characterized in that, between described every two pad columns, be close to described yoke side frame described permanent magnet be set, described permanent magnet comprises the first magnet, the second magnet, the 3rd magnet and the 4th magnet, described the 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.
6. a kind of multi-purposed miniature voice coil motor according to claim 4, it is characterized in that, described lower shell fragment comprises the second housing, the second inside casing and the second elater, described the second housing is the disjunction setting along lower shell fragment center, described the second inside casing also is the disjunction setting along lower shell fragment center, has the second fixing hole for fixing described coil holder bottom in described the second inside casing, the corresponding described coil holder bottom lug of the peripheral side near described the second housing of described the second inside casing arranges the second holddown groove, described the second elater comprises curved portions and two line parts of at least six sections bendings, and described line part and described curved portions adopt straight line and the tangent coupling of arc, described the second elater respectively with described the second housing, described the second inside casing arc-shaped transition connects, two pole pieces that are used for connecing electricity are set on described the second housing, second inside casing at these two pole piece places is connected with initial and the end lines welding of coil respectively.
7. a kind of multi-purposed miniature voice coil motor according to claim 6, it is characterized in that, described the second pad is arranged between the second housing of described permanent magnet and described lower shell fragment, be used for the second housing of described lower shell fragment is pressed on described base, described the second pad comprises the second support ring that matches with described the second housing shape, and four angle sunken insides of described the second support ring have the pad groove.
8. a kind of multi-purposed miniature voice coil motor according to claim 7, it is characterized in that, described base center arranges the base light hole, the peripheral corresponding described coil holder dust ring of described base light hole arranges the base dust ring, be provided for supporting the interior step of base dust ring of described coil holder dust ring between described base dust ring and described base light hole, on described base dust ring, the base groove that is complementary with coil holder double wedge and coil holder bottom lug is set respectively away from the side at described base light hole center, be provided with four jiaos of described bases the base column that the pad groove with the second pad is complementary.
9. according to claim 1 and 2 or 3 or 5 or 7 or 8 arbitrary described a kind of multi-purposed miniature voice coil motors, it is characterized in that, four yoke protuberances evenly distribute on each frame of described yoke side frame, arrange one on one of them yoke protuberance and be used for guaranteeing the stable earth terminal of described magnetic yoke body built-in field, corresponding described yoke protuberance arranges the screens groove on described chassis side, so that described magnetic yoke body and described base can be integrated in clamping, the corresponding described pole piece in the both sides of a screens groove is provided with the pole piece through hole that passes through for described pole piece therein.
10. according to claim 3 or 6 described a kind of multi-purposed miniature voice coil motors, it is characterized in that, described the first elater and the second elater all have four groups, and four groups of described first elater symmetries are distributed between described the first housing and described the first inside casing, and four groups of described second elater symmetries are distributed between described the second housing and described the second inside casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617661 CN202940719U (en) | 2012-11-20 | 2012-11-20 | Multipurpose micro voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617661 CN202940719U (en) | 2012-11-20 | 2012-11-20 | Multipurpose micro voice coil motor |
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| Publication Number | Publication Date |
|---|---|
| CN202940719U true CN202940719U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220617661 Expired - Lifetime CN202940719U (en) | 2012-11-20 | 2012-11-20 | Multipurpose micro voice coil motor |
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| CN (1) | CN202940719U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957297A (en) * | 2012-11-20 | 2013-03-06 | 辽宁中蓝电子科技有限公司 | Multi-purpose micro voice coil motor |
| CN108768132A (en) * | 2018-08-16 | 2018-11-06 | 深圳市海普智能装备技术有限公司 | voice coil motor and driving device |
-
2012
- 2012-11-20 CN CN 201220617661 patent/CN202940719U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957297A (en) * | 2012-11-20 | 2013-03-06 | 辽宁中蓝电子科技有限公司 | Multi-purpose micro 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 |
| CN108768132A (en) * | 2018-08-16 | 2018-11-06 | 深圳市海普智能装备技术有限公司 | voice coil motor and driving device |
| CN108768132B (en) * | 2018-08-16 | 2024-02-27 | 奥茵绅智能装备(苏州)有限公司 | Voice coil motor and driving device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201208 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 Zhong Hua Electronic Technology Co., Ltd, Zhonghua Road East Panjin Economic Development Zone, Panjin, Xinglongtai, Liaoning Patentee before: LIAONING ZHONGLAN ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| 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 utility model: Multipurpose miniature voice coil motor Effective date of registration: 20210726 Granted publication date: 20130515 Pledgee: China Construction Bank Corporation Panjin branch Pledgor: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Registration number: Y2021210000049 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |