CN208571782U - A kind of closed loop motor Steady base component - Google Patents

Abstract

The utility model relates to VCM technical fields, specifically, it is related to a kind of closed loop motor Steady base component, including pedestal, and the B spring with base engagement, the pedestal includes quadrate support plate, and the movable through-hole through quadrate support plate, the axle center of movable through-hole is overlapped with the axle center of quadrate support plate, the activity through-hole extends to form stop collar close to the side of B spring, the supporting table for cooperating with B spring is equipped at the endpoint of the quadrate support plate, each supporting table is equipped with the first limited post, second limited post of the first limited post two sides, the height of first limited post, cross-sectional area is respectively greater than the height and cross-sectional area of the second limited post, so, that is it is assembled within the scope of certain reference for assembling, and second limited post with second limit post holes assembly precision it is higher, it realizes fast While quick-mounting is matched, guarantees assembly precision, improve the focusing precision of closed loop motor.

Description

A kind of closed loop motor Steady base component

Technical field:

The utility model relates to VCM technical fields, and in particular, to a kind of closed loop motor Steady base component.

Background technique:

Closed loop motor (Voice Coil Actuator/Voice Coil Motor), is that one kind converts electrical energy into machinery The device of energy, and realize the movement of linear type and limited pivot angle.It is produced using the magnetic field from permanent-magnet steel with hot-wire coil conductor Interaction in raw magnetic field between magnetic pole generates the device of regular movement.Because closed loop motor is that a kind of non-inverting type is dynamic Power device, positioning accuracy depend entirely on feedback and control system, unrelated with closed loop motor itself.It is anti-using suitable positioning Feedback and sensing device its positioning accuracy can easily reach 10NM, and up to 300g, (actual acceleration also depends on load to acceleration The situation of object).Camera mould group projects the length of time of Image Sensor by shutter control light, for example, shutter speed is At 1/2 second, indicate that Image Sensor photosensitive time is 1/2 second, if in this 1/2 second due to shaking same light beam Line moves in Image Sensor, and Image Sensor will record the motion profile of the light, makes the photo mould of shooting It pastes unclear.In order to compensate for the light offset as caused by shake, last century the nineties start to occur utilizing image stabilization system System is to prevent the camera mould group shaken.Referring specifically to Cardani B. et al. in April, 2006 in Control Systems Paper " the Optical image delivered on Magazine, IEEE (Volume 26, Issue 2, Page (s): 21-22) stabilization for digital cameras”。

With making constant progress for scientific and technological level, consumer is to portable digital product (such as smart phone, plate electricity Brain) image quality requirement it is higher and higher.Currently, voice coil motor has been provided with automatic focusing function, and it is divided into open loop voice coil Motor and closed loop voice coil motor；Closed loop voice coil motor has especially under large aperture to pyrogene compared with open loop voice coil motor Accuracy is high, focusing faster, it is low in energy consumption the features such as.

Closed loop voice coil motor can effectively shorten the stabilization time of camera lens in auto-focusing, and it is existing to reduce motor operation sluggishness As and eliminate and take pictures influence of the posture to quality of taking pictures, with driving chip higher order algorithm fit applications to promote focusing speed, The stabilization time of closed loop voice coil motor faster than open loop voice coil motor 50% or so.

Currently, by constantly researching and developing, the closed loop voice coil motor presence developed is very big for some smart phone manufacturers both at home and abroad It is insufficient.Existing closed loop voice coil motor is broadly divided into ball-type closed loop voice coil motor and spring-piece type closed loop voice coil motor.Ball-type For closed loop voice coil motor since roll structure limits, volume is big, is unfavorable for end product and develops to lightening direction；And in non-bat According in the state of, camera lens can hit motor shell and generate abnormal sound, affect to user's use；And the spring-piece type announced at present closes The structure of rounding voice ring motor, production technology is more complex, and high production cost is unfavorable for automated production.

Utility model content:

The utility model overcomes the deficiencies of existing technologies, and provides a kind of closed loop motor Steady base component.

Technical problems to be solved in this application are implemented with the following technical solutions: a kind of closed loop motor Steady base group Part, including pedestal and with the B spring of base engagement, the pedestal includes quadrate support plate, and through quadrate support plate The axle center of movable through-hole, movable through-hole is overlapped with the axle center of quadrate support plate, and the activity through-hole extends close to the side of B spring Stop collar is formed, the supporting table for cooperating with B spring is equipped at the endpoint of the quadrate support plate, is set in each supporting table There is the second limited post of the first limited post, the first limited post two sides, the height of first limited post, cross-sectional area are respectively greater than The height and cross-sectional area of second limited post.

Preferably, the side of each supporting table extends to form the B bullet being adapted to the B spring along quadrate support plate outer rim Spring accommodation groove.

Preferably, one end of the quadrate support plate is additionally provided with the FPC plate accommodation groove for cooperating with FPC plate.

Preferably, the two sides of the FPC plate accommodation groove are equipped with the arc-shaped guide plate being located in B spring mounting groove.

Preferably, the circle that each arc-shaped guide plate is enclosed is overlapped with the inner ring of B spring mounting groove.

Preferably, the height of the B spring mounting groove is identical as the height of stop collar.

Closed loop motor in the application is specifically used in closed loop motor with Steady base component, and the application is also specifically disclosed that The closed loop motor:

A kind of closed loop motor, it is described to close including pedestal, the mobile component being set on the base and close-loop driven component Ring driving assembly moves on optical axis for inducting and driving the mobile component.

Preferably, the B spring includes 1/2B spring body and 1/4B spring body, and the 1/2B spring body includes being arranged in phase A pair of of spring retaining plate in adjacent supporting table, is respectively provided on the spring retaining plate and the first limited post, the second limit The first limited post through-hole, the second limited post through-hole of column cooperation, the rigging error of the first limited post through-hole are greater than the second limit The rigging error of position column through-hole；

Each spring retaining plate one end close to each other is connected via elastic arm, among each spring retaining plate side via Silk spring is connected with the second elastic arm, and second elastic arm is by clockwise to the extension of next spring retaining plate；

The 1/4B spring body includes spring retaining plate, and side is connected with second via silk spring among the spring retaining plate Elastic arm, second elastic arm is by clockwise to the extension of next spring retaining plate, the 1/2B spring body, 1/4B spring Body is enclosed the B spring, and to be arranged in B spring retention intracavitary.

Preferably, the height of the B spring mounting groove is identical as the height of stop collar；

Each second spring arm is equipped with far from one end of silk spring for the buckle with the cooperation of the flange of carrier lower end, described Flange engages with the mounting hole on the buckle.

Preferably, the close-loop driven component includes FPC plate and is realized with the FPC plate by the close-loop driven route The Hall magnetic field sensing element of electrical connection；

The mobile component includes carrier and is respectively set focusing magnetic field creating elements and Hall on the carrier Magnetic field creating elements；

The periphery of the carrier is provided with Constant charge soil producing element；

Preferably, the Hall magnetic field sensing element is Hall sensor, passes through the close-loop driven route and the FPC Plate electrical connection；The focusing magnetic field creating elements are a pair of of focal line circle, are wrapped in outside the carrier and place；The Hall magnetic field is raw It is two Hall magnets at element, is oppositely disposed on the two sides of the carrier；The Constant charge soil producing element be two forever Magnet is oppositely disposed at outside the two sides of the carrier；Two Hall magnets and two permanent magnets alternately divide in 90 ° of isogonism biasings Cloth.

Preferably, integrally the side's of being in cavernous structure, carrier outer peripheral sidewall are equipped with for accommodating Constant charge soil generation the carrier The cable clamping interface of element, the Constant charge soil producing element are fastened in cable clamping interface；Arrangement Hall magnetic field induction member is additionally provided on carrier The Hall magnetic field sensing element accommodation groove of part；

The carrier is equipped with stroke groove far from one end of B spring, and the stroke groove is arranged at all ends of carrier.

Carrier is arranged via flange and the B spring intervals.

Preferably, the carrier upper end is equipped with F spring, and the F spring includes inner ring, U of the arranged for interval on the outside of inner ring Type connecting plate, the end of the U-shaped connecting plate are equipped with the bonding foot being located in inner ring；The end of the U-shaped connecting plate via Second elastic arm is connected firmly with the bonding foot far from the end；

Arranged for interval has a through-hole on the bonding foot, the carrier close to the side of F spring be additionally provided with Nian Jie foot one by one The shallow slot of corresponding matching, the bonding foot are connected firmly via dispensing and the shallow slot.

Preferably, the F spring upper end is additionally provided with F gasket, and the F gasket is equipped with flange close to one end of F spring, described Flange engages via the mounting hole being arranged at U-shaped connecting plate endpoint；

The F gasket is equipped with FPC limit plate, the U-shaped mouth of U-shaped connecting plate and the ipsilateral arrangement of FPC plate on one side, and described FPC plate is arranged in the FPC plate accommodation groove, and buckles and connect firmly via the rivet being located on B spring for being arranged in the side.

Preferably, the pedestal upper end is arranged with shell, and the shell includes rectangular box-like ontology, and the ontology is separate One end of pedestal is equipped with cover board, and the cover board is equipped with through-hole one identical with movable through-hole, and the inside of the through-hole one is equipped with Perpendicular to the limit connecting plate of through-hole one, the limit connecting plate is protruded into the stroke groove, to extension at the pedestal endpoint It stretches to form limiting stand, the limiting stand cooperates with the notch being arranged at the endpoint of ontology lower end.

Working principle: during the focusing process, the Hall magnetic field sensing element generates member by incuding the Hall magnetic field Hall magnetic field caused by part with the position of the determination mobile component, and the location information of the mobile component is sent to The FPC plate, the FPC plate go out the focusing magnetic with the driving mobile component according to the positional information calculation of the mobile component The corresponding size of current in place, and the electric current is passed into the focusing magnetic field creating elements, generate the focusing magnetic field Element generates corresponding focusing magnetic field, the interaction focused between magnetic field and the Constant charge soil of Constant charge soil producing element generation The mobile component is pushed to focusing position, completes focus process.

Compared with prior art, the application has the beneficial effect that

1, in the application, the first limited post that supporting table is equipped with, the second limited post respectively with the first limit on B spring Column through-hole, the cooperation of the second limited post through-hole, in assembling process, the first limited post cooperates with the first limited post through-hole first, by It is larger in the height and cross-sectional area of the first limited post, to reduce the first limited post and the first limited post assembly difficulty, mention High assembly efficiency, while in the second limited post assembling process for being equipped with of the application, it is to be carried out under the benchmark of the first limited post Assembly, that is to say, that assembled within the scope of certain reference for assembling, and the dress of the second limited post and the second limit post holes It is higher with precision, it realizes while quick assembling, guarantees assembly precision, improve the focusing precision of closed loop motor；

2, in the application, the two sides of FPC plate accommodation groove are equipped with the arc-shaped guide plate being located in B spring mounting groove, on the one hand The chamber indoor sport that is enclosed in arc-shaped guide plate of arc-shaped guide plate limitation carrier, it is ensured that the accuracy of focus process and reliable Property, on the other hand, B spring itself is used for trimming moment, its own possesses elasticity, and the elastic deformation of B spring is via arcuate guide Plate and B spring mounting groove collective effect and limit in a certain range, so that it is guaranteed that the Flexible change of B spring is in controlled range It is interior, promote focusing accuracy；

3, in the application, the B spring and bullet in the prior art that are enclosed via 1/2B spring and two 1/4B springs Spring is compared, and the B spring sensitivity in the application is higher, and during the focusing process, when carrier movement, carrier is due to being in different angles Degree, user hold posture difference, and carrier is not identical to the active force of B spring, and stand alone type knot in the application Structure makes B spring due to mutually indepedent, when by carrier function, the B spring of adjacent position be affected it is small, hence for The feedback of carrier is small, realizes the accuracy and anti-interference of focusing；

4, in the application, due to its own small in size of closed loop voice coil, and specifically define the height of B spring mounting groove with The height of stop collar is identical, when carrier is along optical axis direction base motions under this condition, stop collar and carrier on pedestal Annulus constitutes limit cooperation, and when carrier is moved along optical axis direction close to F spring one end, arc-shaped guide plate is by the radial deflection of carrier It is limited in authorized range, that is to say, that under conditions of ensuring to focus accuracy, optimize the axial length of closed loop voice coil, reduce The volume of closed loop voice coil；

5, in the application, carrier lower end is arranged via flange and B spring intervals, and carrier upper end is equipped with F spring, and carrier is close The side of F spring is additionally provided with the shallow slot that cooperation is corresponded with Nian Jie foot, and bonding foot is connected firmly via dispensing and shallow slot, and use is porous The bonding foot and shallow slot of shape cooperate, and will be bonded foot using dispensing mode and connect firmly with shallow slot, during being somebody's turn to do, can accelerate glue warp Dropped into shallow slot by through-hole and scattered speed, and the structure after connecting firmly be shallow slot via glue and the lower end surface of Nian Jie foot with And the through-hole wall of bonding foot connects firmly one, connects firmly time, adhesive strength between bonding foot and shallow slot to optimize；

6, in the application, it is equipped with the FPC plate accommodation groove being adapted to FPC plate first on pedestal, limits FPC plate in FPC plate Laterally free degree in accommodation groove, FPC plate close to one end of F gasket via overhead at the lower end surface of F gasket and the position FPC plate is positioned via FPC limit plate, is finally buckled and is connected firmly via the rivet being located on B spring for being arranged in the side, thus real Now FPC plate is firmly connected firmly in voice coil motor, optimizes installation procedure.

Detailed description of the invention:

Fig. 1 is closed loop motor configuration explosive view；

Fig. 2 is closed loop motor half sectional view；

Fig. 3 is schematic diagram of base structure；

Fig. 4 is B spring structure schematic diagram；

Fig. 5 is B spring and pedestal assembling schematic diagram；

Fig. 6 is carrier structure schematic diagram；

Fig. 7~Fig. 8 is that carrier and B spring assemble different perspectives schematic diagram；

Fig. 9 is F spring structure schematic diagram；

Figure 10 is assembling schematic diagram of the closed loop motor except decapsidate, F gasket；

Figure 11 is F gasket construction schematic diagram；

The position Figure 12 FPC plate installation diagram；

Figure 13~14 are shell different perspectives schematic diagram；

In figure: 10~pedestal；11~quadrate support plate；12~activity through-hole；13~stop collar；14~supporting table；15~ First limited post；16~the second limited posts；17~B spring mounting groove；18~FPC plate accommodation groove；19~arc-shaped guide plate；191 ~limiting stand；21~carrier；22~Constant charge soil producing element；211~cable clamping interface；212~Hall magnetic field sensing element accommodation groove； 213~stroke groove；214~shallow slot；31~FPC plate；40~B spring；41~1/2B spring；42~1/4B spring；43~spring Fixed plate；44~the first limited post through-holes；45~the second limited post through-holes；46~elastic arm；47~the second elastic arms；48~button Plate；50~F spring；51~inner ring；52~U-shaped connecting plate；53~bonding foot；60~F gasket；70~shell；71~ontology； 72~cover board；73~limit connecting plate.

Specific embodiment:

In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under Face in conjunction with specific embodiments, furthers elucidate the utility model.

As shown in Figure 1, Figure 3, a kind of closed loop motor Steady base component, including pedestal and with the B bullet of base engagement Spring, pedestal 10 include quadrate support plate 11, and through the movable through-hole 12 of quadrate support plate 11, the axle center of movable through-hole 12 with The axle center of quadrate support plate 11 is overlapped, and movable through-hole 12 extends to form stop collar 13, quadrate support plate close to the side of B spring 40 The supporting table 14 for cooperating with B spring 40 is equipped at 11 endpoint, each supporting table 14 is limited equipped with the first limited post 15, first Second limited post 16 of position 15 two sides of column, the height of the first limited post 15, cross-sectional area are respectively greater than the height of the second limited post 16 Degree and cross-sectional area.In the application, the first limited post 15 that supporting table 14 is equipped with, the second limited post 16 respectively with B spring 40 On the first limited post through-hole 44, the cooperation of the second limited post through-hole 45, in assembling process, the first limited post 15 is first with first Limited post through-hole 44 cooperates, since the height and cross-sectional area of the first limited post 15 are larger, to reduce the first limited post 15 With 44 assembly difficulty of the first limited post through-hole, assembly efficiency is improved, while the second limited post 16 that the application is equipped with assembled Cheng Zhong is to be assembled under the benchmark of the first limited post 15, that is to say, that filled within the scope of certain reference for assembling Match, and the second limited post 16 and the assembly precision of the second limit post holes 45 are higher, realize while quick assembling, guarantee assembly Precision improves the focusing precision of closed loop motor.

As shown in figure 3, the side of each supporting table 14 extends to form the B being adapted to B spring 40 along 11 outer rim of quadrate support plate Spring mounting groove 17, one end of quadrate support plate 11 are additionally provided with the FPC plate accommodation groove 18 for cooperating with FPC plate 31, FPC plate The two sides of accommodation groove 18 are equipped with the arc-shaped guide plate 19 being located in B spring mounting groove 17, what each arc-shaped guide plate 19 was enclosed Circle is overlapped with the inner ring of B spring mounting groove 17, and the height of B spring mounting groove 17 is identical as the height of stop collar 13.In the application, The two sides of FPC plate accommodation groove 18 are equipped with the arc-shaped guide plate 19 being located in B spring mounting groove 17, one side arc-shaped guide plate 19 The chamber indoor sport that limitation carrier 21 is enclosed in arc-shaped guide plate 19, it is ensured that the accuracy and reliability of focus process, separately On the one hand, B spring 40 itself is used for trimming moment, its own possesses elasticity, and the elastic deformation of B spring 40 is via arc-shaped guide plate 19 with 17 collective effect of B spring mounting groove and limit in a certain range, so that it is guaranteed that the Flexible change of B spring 40 is in controllable model In enclosing, focusing accuracy is promoted.

Specifically, being specifically described the utility model in conjunction with the structure of closed loop motor below:

As depicted in figs. 1 and 2, a kind of closed loop motor, including pedestal 10, the mobile component being arranged on pedestal 10, and Close-loop driven component, close-loop driven component move on optical axis for inducting and driving the mobile component.

It is specifically described below for the structure and its effect of the application closed loop motor:

As shown in Fig. 3,4 and Fig. 5, B spring 40 includes 1/2B spring body 41 and 1/4B spring body 42,1/2B spring body 41 Including a pair of of the spring retaining plate 43 being arranged on adjacent supports platform 14, it is respectively provided on spring retaining plate 43 and the first limit The first limited post through-hole 44, the second limited post through-hole 45 that position column 15, the second limited post 16 cooperate, the first limited post through-hole 44 Rigging error is greater than the rigging error of the second limited post through-hole 45；Each spring retaining plate 43 one end close to each other is via elastic arm 46 connections, the intermediate side of each spring retaining plate 43 are connected with the second elastic arm 47 via silk spring, and the second elastic arm 47 is by clockwise Extend to next spring retaining plate 43；

1/4B spring body 42 includes spring retaining plate 43, and the intermediate side of spring retaining plate 43 is connected with the second bullet via silk spring Property arm 47, the second elastic arm 47 by clockwise to next spring retaining plate 43 extend, 1/2B spring body 41,1/4B spring body 42, which are enclosed B spring 40, is arranged in B spring mounting groove 17；The height phase of the height of B spring mounting groove 17 and stop collar 13 Together；Each second spring arm 47 is equipped with far from one end of spring for the buckle 48 with the cooperation of the flange of 21 lower end of carrier, flange with Mounting hole engaging on the buckle 48.In the application, the B that is enclosed via 1/2B spring 41 and two 1/4B springs 42 For spring 40 compared with spring in the prior art, 40 sensitivity of B spring in the application is higher, during the focusing process, carrier fortune When dynamic, posture is different due to holding in different angles, user for carrier 21, carrier 21 to the active force of B spring 40 not It is identical, and stand-alone configuration makes B spring 40 due to mutually indepedent in the application, when being acted on by carrier 21, The B spring 40 of its adjacent position be affected it is small, it is small hence for the feedback of carrier 21, realize the accuracy of focusing and anti-dry Immunity.

As shown in Fig. 1,2,12, close-loop driven component includes FPC plate 31 and passes through the close-loop driven route with FPC plate 31 Realize the Hall magnetic field sensing element of electrical connection；Mobile component includes carrier 21 and pair that is separately positioned on the carrier 21 Burnt magnetic field creating elements and Hall magnetic field producing element；The periphery of carrier 21 is provided with Constant charge soil producing element 22.

Specifically, Hall magnetic field sensing element is Hall sensor, is electrically connected by close-loop driven route with FPC plate 31； Magnetic field creating elements of focusing are a pair of of focal line circle, are wrapped in outside the carrier and place；Hall magnetic field producing element is two Halls Magnet is oppositely disposed on the two sides of the carrier 21；Constant charge soil producing element is two permanent magnets, is oppositely disposed at institute It states outside the two sides of carrier；Two Hall magnets and two permanent magnets are alternately distributed in 90 ° of isogonism biasings.

As shown in Fig. 6,7 and Fig. 8, carrier 21 is whole in square cavernous structure, and 21 outer peripheral sidewall of carrier is equipped with for accommodating The cable clamping interface 211 of Constant charge soil producing element 22, Constant charge soil producing element 22 are fastened in cable clamping interface 211；It is additionally provided on carrier 21 Arrange the Hall magnetic field sensing element accommodation groove 212 of Hall magnetic field sensing element；Carrier 21 is equipped with row far from one end of B spring 40 Journey slot 213, stroke groove 213 are arranged at all ends of carrier 21 carrier 21 via flange and 40 arranged for interval of B spring, carrier upper end Equipped with F spring 50, F spring 50 includes inner ring 51, U-shaped connecting plate 52 of the arranged for interval in 51 outside of inner ring, U type connecting plate 52 End be equipped be located at inner ring 51 on bonding foot 53；It is somebody's turn to do via the second elastic arm 47 with separate the end of U-shaped connecting plate 52 The bonding foot 53 of end connects firmly；Arranged for interval has through-hole on bonding foot 53, and carrier 21 is additionally provided with and glues close to the side of F spring 50 Pin 53 corresponds the shallow slot 214 of cooperation, and bonding foot 53 is connected firmly via dispensing and the shallow slot 514.In the application, carrier 21 lower ends are equipped with F spring 50 via flange and 40 arranged for interval of B spring, 21 upper end of carrier, and carrier 21 is close to the side of F spring 50 It is additionally provided with the shallow slot 214 that cooperation is corresponded with Nian Jie foot 53, bonding foot 214 is connected firmly via dispensing and shallow slot 214, and use is porous The bonding foot 53 and shallow slot 214 of shape cooperate, and will be bonded foot 53 using dispensing mode and connect firmly with shallow slot 514, can during being somebody's turn to do Accelerate glue to drop into shallow slot 214 via through-hole and scattered speed, and the structure after connecting firmly be shallow slot 214 via glue with The lower end surface for being bonded foot 53 and the through-hole wall for being bonded foot 53 connect firmly one, to optimize between bonding foot 53 and shallow slot 214 Connect firmly time, adhesive strength.

As shown in Figure 9 and Figure 10,50 upper end of F spring is additionally provided with F gasket 60, and F gasket 60 is set close to one end of F spring 50 There is flange, flange engages via the mounting hole being arranged at U-shaped 52 endpoint of connecting plate；F gasket 60 is equipped with FPC limit plate, U on one side The U-shaped mouth and the ipsilateral arrangement of FPC plate 31 of type connecting plate 52, and FPC plate 31 is arranged in the FPC plate accommodation groove 18, and via The rivet being located on B spring 40 for being arranged in the side, which is buckled, to be connected firmly, and in the application, is equipped with first on pedestal 10 suitable with FPC plate 31 The FPC plate accommodation groove 18 matched limits laterally free degree of the FPC plate 31 in FPC plate accommodation groove 18, and FPC plate 31 is close to F gasket 60 One end positioned via FPC plate 31 of the overhead at the lower end surface of F gasket 60 and the position via FPC limit plate, finally It buckles and connects firmly via the rivet being located on B spring 440 for being arranged in the side, firmly connect firmly FPC plate 31 in voice coil to realize In motor, installation procedure is optimized.

As shown in Fig. 2,13 and Figure 14,10 upper end of pedestal is arranged with shell 70, and shell 70 includes rectangular box-like ontology 71, Ontology 71 is equipped with cover board 72 far from one end of pedestal 10, and cover board 72 is equipped with through-hole one identical with movable through-hole 12, through-hole one Inside be equipped with perpendicular to through-hole one limit connecting plate 73, limit connecting plate 73 protrude into the stroke groove 213,10 end of pedestal Limiting stand 191 is extended outward to form at point, limiting stand 191 cooperates with the notch being arranged at the endpoint of 71 lower end of ontology.

Working principle: during the focusing process, the Hall magnetic field sensing element generates member by incuding the Hall magnetic field Hall magnetic field caused by part with the position of the determination mobile component, and the location information of the mobile component is sent to The FPC plate, the FPC plate go out the focusing magnetic with the driving mobile component according to the positional information calculation of the mobile component The corresponding size of current in place, and the electric current is passed into the focusing magnetic field creating elements, generate the focusing magnetic field Element generates corresponding focusing magnetic field, the interaction focused between magnetic field and the Constant charge soil of Constant charge soil producing element generation The mobile component is pushed to focusing position, completes focus process.

The characteristics of basic principles and main features and the utility model of the utility model have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these changes and improvements are both fallen in the range of claimed invention.This is practical new The claimed range of type is defined by the appending claims and its equivalent thereof.

Claims (3)

1. a kind of closed loop motor Steady base component, which is characterized in that including pedestal and with the B spring of base engagement, institute Stating pedestal (10) includes quadrate support plate (11), and runs through the movable through-hole (12) of quadrate support plate (11), movable through-hole (12) axle center is overlapped with the axle center of quadrate support plate (11), and the activity through-hole (12) extends close to the side of B spring (40) It is formed stop collar (13), the supporting table (14) for cooperating with B spring (40) is equipped at the endpoint of the quadrate support plate (11), Each supporting table (14) is equipped with second limited post (16) of the first limited post (15), the first limited post (15) two sides, described The height of first limited post (15), cross-sectional area are respectively greater than the height and cross-sectional area of the second limited post (16)；Each branch The side of support platform (14) extends to form the B spring mounting groove being adapted to the B spring (40) along quadrate support plate (11) outer rim (17)；One end of the quadrate support plate (11) is additionally provided with the FPC plate accommodation groove (18) for cooperating with FPC plate (31)；It is described The two sides of FPC plate accommodation groove (18) are equipped with the arc-shaped guide plate (19) being located on B spring mounting groove (17).

2. closed loop motor Steady base component according to claim 1, which is characterized in that each arc-shaped guide plate (19) circle being enclosed is overlapped with the inner ring of B spring mounting groove (17).

3. closed loop motor Steady base component according to claim 2, which is characterized in that the B spring mounting groove (17) height is identical as the height of stop collar (13).