CN1166023A - Method for winding coil capable of increasing high frequency band sensitivity - Google Patents

Method for winding coil capable of increasing high frequency band sensitivity Download PDF

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Publication number
CN1166023A
CN1166023A CN97102058A CN97102058A CN1166023A CN 1166023 A CN1166023 A CN 1166023A CN 97102058 A CN97102058 A CN 97102058A CN 97102058 A CN97102058 A CN 97102058A CN 1166023 A CN1166023 A CN 1166023A
Authority
CN
China
Prior art keywords
bobbin winder
winder bracket
coil
coils
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN97102058A
Other languages
Chinese (zh)
Inventor
李宰源
李哲雨
李庸勋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of CN1166023A publication Critical patent/CN1166023A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0935—Details of the moving parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/18—Machines moving with multiple degrees of freedom

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Coil Winding Methods And Apparatuses (AREA)
  • Electromagnets (AREA)

Abstract

At least two coils are wound around a bobbin and connected in parallel to decrease coil resistance and as a result, increase the driving current and sensitivity of the actuator. At least two coils or a plurality of coils are wound around the bobbin to decrease coil resistance and to increase the driving current for the bobbin. The actuator includes a lens for focusing a laser beam precisely on an optical disc to read out data stored in the optical disc. The bobbin supports the lens, which is movable by the actuator in a track direction of the disc or towards and away from the disc, and a supporter supports the bobbin.

Description

Can improve the method for the winding around of high frequency band sensitivity
The present invention relates to a kind of method of driving regulator, this regulator is used for the position of tracking illumination data recording/reproducing device, more particularly, relates to a kind of coil-winding method that can improve the regulator drive current, and regulator is driven by a driven servo-drive system.
Fig. 1 represents to have the conventional regulator 20 of object lens 28, and object lens 28 are installed on the bobbin winder bracket 10, and this regulator is used for laser beam is accurately focused on the CD to read the data that are stored in the CD.Bobbin winder bracket 10 supports object lens 28 regularly.
Coil 24 around the bobbin winder bracket 10 provides drive current in order to mobile bobbin winder bracket 10 vertically by the servo loop (not shown), and provides electric current with mobile bobbin winder bracket 10 flatly around the session tracking coil 22 of bobbin winder bracket 10 front and rear parts by this servo loop.The supporter 26 of fixing a spring and supporting bobbin winder bracket 10 is installed in a side of bobbin winder bracket 10.
Fig. 2 has represented that briefly coil is wrapped in bobbin winder bracket 10 method on every side in the prior art.Fig. 3 represents the circuit diagram corresponding to Fig. 2.With reference to Fig. 2 and Fig. 3, first coil 12 is connected around bobbin winder bracket 10 by a specific direction (being counterclockwise among the figure) from the top to the bottom.In detail, single coil is connected continuously to the coiling terminal point from the coiling starting point with a specific direction and is wound up.
In the prior art, in order to improve the driving sensitivity of bobbin winder bracket 10, the number of turn of series connection winding 12 must increase, yet the increase of first coil, 12 numbers of turn can cause the increase of coil resistance, thereby causes the reduction of input current.Therefore first coil 12 easily produces heats, and the electric current that is applied to first coil 12 is limited in a specific value, thereby causes reducing of on session tracking direction and focus direction driving force.
Therefore one object of the present invention is to provide a kind of method of winding around in parallel.
Another object of the present invention is to provide a kind of coil-winding method that reduces coil resistance.
A further object of the present invention is to provide a kind of coil-winding method that can improve drive current and drive sensitivity.
A further object of the present invention is to provide a kind of coil-winding method that can improve driving force in the session tracking and the focus direction of bobbin winder bracket.
A further object of the present invention is to provide a kind of coil-winding method that can improve the interchange sensitivity of regulator.
According to an aspect of the present invention, one use the feature of coiling method on the ac power supply apparatus be at least on this device around two or more coils to reduce coil resistance, improve the drive current that puts in this device.
According to a further aspect in the invention, the feature of winding around method is on the bobbin winder bracket of regulator, is wound with two or more at least coils reducing resistance on this bobbin winder bracket, thereby improves the drive current that is applied on this bobbin winder bracket.This regulator comprises and is used for laser beam is accurately focused on the CD to read the object lens that are stored in these CD data; The bobbin winder bracket of one these object lens of supporting; Be used for the coil that edge focusing and session tracking direction move bobbin winder bracket; The supporter of one this bobbin winder bracket of supporting.
According to below in conjunction with the accompanying drawing detailed description of the preferred embodiment, above and other objects of the present invention, feature and advantage will become clearer.In the accompanying drawing:
Fig. 1 is the sketch according to the regulator in the optical recording/reproducing apparatus of prior art.
Fig. 2 is illustrated in the method on the bobbin winder bracket of coil in the prior art.
Fig. 3 is the equivalent circuit diagram corresponding to Fig. 2.
Fig. 4 is illustrated in the method on the bobbin winder bracket of coil in one embodiment of the invention.
Fig. 5 is the equivalent circuit diagram corresponding to Fig. 4.
Fig. 6 is illustrated in coil in an alternative embodiment of the invention and is wrapped in a method of using on the device of AC power.
Fig. 7 is the equivalent circuit diagram of Fig. 6.
Describe the winding method of coil in the embodiments of the invention below with reference to accompanying drawings in detail, label identical among the figure is represented components identical.
With reference to Fig. 4 and Fig. 5, first coil 12 and second coil 14 begin from the top of bobbin winder bracket to be wrapped in around this bobbin winder bracket with a certain specific direction parallel connection.Should be noted that parallel connection is wrapped in that the number of coil can be two or more around the bobbin winder bracket 10, this comes calmly as required.
Can understand at an easy rate from foregoing description, because first and second coils 12 and 14 are in parallel around bobbin winder bracket 10, winding resistance can reduce widely, causes the raising of drive current, that is to say to make to drive sensitivity and improve.
To (3), foregoing description will be clearer by equation (1), and in other words, when two coils from parallel connection of coils twined, the high frequency band sensitivity of regulator was directly proportional with driving force.
High frequency band sensitivity α driving force (F) α Biln...... (1)
Here B represents magnetic field, and i is an electric current, and l is the length of coil, and n is a coil turn.
Here electric current is decided by equation (2):
I (electric current)=V (voltage)/R (coil resistance) ... .... (2)
With equation (2) substitution equation (1), then
High frequency band sensitivity α BVln/R..... (3)
Be readily appreciated that from above-mentioned although the bridging coil winding is identical with the coil turn of series connection winding, coil 12 and 14 all-in resistance (l/R) will be reduced to l/R 12+ l/R 14In other words, it is original 1/4 that winding resistance is reduced to, and same electrical is depressed drive current will become original 4 times, and therefore driving sensitivity also becomes original 4 times.
As mentioned above, according to one embodiment of present invention, coil winding methods can improve drive current and drive sensitivity, also can improve simultaneously along session and follow the tracks of and the driving force to the bobbin winder bracket of focus direction.And the interchange sensitivity of this regulator also is improved.
Fig. 6 and 7 illustrates according to another embodiment of the invention the method for winding around in a kind of device that uses AC power.Wherein, a plurality of coils (1,2 ..., n-1, n) with a specific direction from top begin parallel connection be wrapped in the device 16 that uses AC power around.In other words, two or more at least coils twine from the coiling origin-to-destination is in parallel with a specific direction.
Therefore, in parallel on the device 16 that uses AC power the resistance value of coil reduce widely, according to equation (1) and (3), drive current and driving sensitivity will improve.
As mentioned above, because in coil-winding method of the present invention, a plurality of coils from parallel connection of coils (coil series connection in the prior art) are on the device that uses AC power, and the resistance of coil can reduce widely, and drive current and sensitivity are improved.
Above-mentioned example is the preferred embodiments of the present invention, is used to explain the present invention.One of ordinary skill in the art can change this embodiment.The present invention is not limited only to illustrated embodiment, and scope of the present invention is defined by the following claims.

Claims (5)

1, a kind ofly it is characterized in that, can reduce winding resistance by on described device, twining two or more at least coils, thereby improve the drive current that acts on the described device in the method for using winding around on the device of AC power.
2, the method for winding around according to claim 1, wherein, described coil carries out parallel connection and twines from a plurality of starting points to a plurality of terminal points.
3, a kind of on the bobbin winder bracket of a regulator method of winding around, it is characterized in that, on bobbin winder bracket, twine two or more at least coils, to reduce winding resistance, thereby improve the drive current that acts on the described bobbin winder bracket, here, described regulator comprises: be used for accurately laser beam being focused on the CD to read object lens that are stored in the CD data; One is used to support the bobbin winder bracket of object lens; A plurality of coils that bobbin winder bracket is moved along focus direction and session tracking direction; Supporter in order to the supporting bobbin winder bracket.
4, the method for winding around as claimed in claim 3, wherein, coil carries out parallel connection and twines from a plurality of starting points to a plurality of terminal points.
5, the method for winding around as claimed in claim 4, wherein, the coil number of winding is 2.
CN97102058A 1996-05-22 1997-01-23 Method for winding coil capable of increasing high frequency band sensitivity Pending CN1166023A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR17519/96 1996-05-22
KR1019960017519A KR970076542A (en) 1996-05-22 1996-05-22 A coil winding method capable of increasing high frequency sensitivity

Publications (1)

Publication Number Publication Date
CN1166023A true CN1166023A (en) 1997-11-26

Family

ID=19459548

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97102058A Pending CN1166023A (en) 1996-05-22 1997-01-23 Method for winding coil capable of increasing high frequency band sensitivity

Country Status (6)

Country Link
JP (1) JP2855111B2 (en)
KR (1) KR970076542A (en)
CN (1) CN1166023A (en)
FR (1) FR2749103A1 (en)
GB (1) GB2313483B (en)
NL (1) NL1005379C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0129821D0 (en) * 2001-12-14 2002-01-30 Delphi Tech Inc Solenoid actuated valve
WO2004097864A2 (en) * 2003-04-29 2004-11-11 Inventive Holdings Llc Coil device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819743A (en) * 1981-07-24 1983-02-04 Pioneer Video Corp Optical system driver for recorded information reader
GB2113475B (en) * 1981-12-23 1986-05-21 Hitachi Ltd Coils constructed to lessen stray capacitance
US4746887A (en) * 1984-09-06 1988-05-24 Techonological Research Association Hollow cylindrical movable body for an electromagnet
JPS61108110A (en) * 1984-10-31 1986-05-26 Kawasaki Heavy Ind Ltd Electromagnetic device
GB8515351D0 (en) * 1985-06-18 1985-07-17 Lucas Ind Plc Winding method
US4841407A (en) * 1986-06-16 1989-06-20 Canon Kabushiki Kaisha Magnetic field generator having a plurality of coils for generating magnetic field in substantially the same space and method of driving the same
EP0273367B1 (en) * 1986-12-26 1994-02-16 Kabushiki Kaisha Toshiba Objective lens driving apparatus
KR920022223A (en) * 1991-05-13 1992-12-19 강진구 Optical system drive

Also Published As

Publication number Publication date
JP2855111B2 (en) 1999-02-10
GB9704044D0 (en) 1997-04-16
GB2313483A (en) 1997-11-26
KR970076542A (en) 1997-12-12
JPH09330812A (en) 1997-12-22
NL1005379C2 (en) 1997-11-25
GB2313483B (en) 1999-02-24
FR2749103A1 (en) 1997-11-28

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