CN1773622A - Voice coil motor structure - Google Patents
Voice coil motor structure Download PDFInfo
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- CN1773622A CN1773622A CN 200410088926 CN200410088926A CN1773622A CN 1773622 A CN1773622 A CN 1773622A CN 200410088926 CN200410088926 CN 200410088926 CN 200410088926 A CN200410088926 A CN 200410088926A CN 1773622 A CN1773622 A CN 1773622A
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- magnetic group
- voice coil
- coil motor
- room
- pedestal
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Abstract
A structure of voice coil motor consists of base with a chamber and a positioning axis hole at center of chamber base, magnetic induction set with its bottom substance corresponding to positioning axis hole and fixing on it quickly for being, set on central position of chamber, coil seat being sheathed by a coil and being set in chamber as well as being sheathed above magnetic induction set for generating magnetic induction by connecting current through with coil so as to generate movement of coil seat to magnetic induction set relatively.
Description
Technical field
The present invention is about a kind of voice coil motor structure, particularly about forming a location axis hole in a pedestal, for fast and accurately in conjunction with the voice coil motor structure of a sense magnetic group.
Background technology
With reference to shown in Figure 1, (voice coil motor, VCM) structure comprises a pedestal 10, a room 11, a magnetic inductive block 12, a permanent magnet 13, a coil holder 14 and a coil 15 to commonly use voice coil motor.This pedestal 10 is arranged with and forms this room 11.This magnetic inductive block 12 and permanent magnet 13 coaxial being fixedly arranged in this room 11.This coil holder 14 can supply this coil 15 of winding, and these coil holder 14 discontiguous inserting in this room 11, so that 13 pairs of inner spaces that are positioned at this coil 15 of this permanent magnet.
When this coil 15 conductings one electric current, this coil 15 will produce magnetic induction with this permanent magnet 13, thereby the driving force that is directly proportional with electric current of formation.This coil holder 14 of this drive force produces microspur relative to this permanent magnet 13 and moves.If this coil holder 14 is during in conjunction with a load (payload), this driving force can be in order to move back and forth this load, maybe this load to be moved to an accurate location or in order to this load of accurate contraposition fast.Because voice coil motor can provide accurate linearity to move (linear motion), therefore can limit this service load the moving of other direction, have the splendid mobile quality of stablizing so can guarantee this load.
For these reasons, voice coil motor often is widely used in having accurate microspur and moves in the various storage devices of demand.For example, voice coil motor can be used for driving Hard Disk Drive or CD player's read head, so as read head relative to magnetic disc or laser disc carry out precision, microspur is linear fast moves; Perhaps, voice coil motor also can be in order to adjust the horizontal accuracy of various bogeys.
On the other hand, in the assembly of this voice coil motor, must form coaxial alignment assembled relation accurately between this magnetic inductive block 12, permanent magnet 13 and the pedestal 10, otherwise the microspur that will influence this coil holder 14 moves quality.Yet, utilize precise clamp (not illustrating) that this magnetic inductive block 12 is accurately pasted bottom center position at this room 11, maybe with this magnetic inductive block 12 and permanent magnet 13 coaxial gluings, its existence that all is difficult to avoid is in conjunction with the problem on the tolerance.Based on above-mentioned factor, still be necessary further to improve above-mentioned voice coil motor structure really.
Summary of the invention
Fundamental purpose of the present invention provides a kind of voice coil motor structure, it utilizes a pedestal that one room is set, one location axis hole is set in the bottom of this room,, makes the present invention have the effect that promotes the assembling degree of accuracy a sense magnetic group is combined in fast and accurately the middle position of this room.
Secondary objective of the present invention provides a kind of voice coil motor structure, it utilizes a pedestal that one room is set, one location axis hole is set in the bottom of this room, the relative end periphery with a sense magnetic group forms a lead angle, so that this sense magnetic group fast and accurately is combined in the middle position of this room, make the present invention have the effect of simplifying assembling and constructing.
Another purpose of the present invention provides a kind of voice coil motor structure, wherein a permanent magnet and a magnetic inductive block of a sense magnetic group are selected to utilize a clip projection and a clip axis hole to carry out combination, or select single permanent magnet directly is set, make the present invention have the effect of simplifying assembling and constructing.
According to voice coil motor structure of the present invention, it comprises a pedestal, a sense magnetic group and a coil holder; This pedestal is provided with a room and a location axis hole, and this positioning shaft hole is located at the bottom center position of this room; Bottom essence of this sense magnetic group is corresponding to this positioning shaft hole, and can be combined in this positioning shaft hole fast and accurately, so that be fixedly arranged on the middle position of this room; The sheathed coil of this coil holder, this coil holder is inserted in this room, and is set in the top of this sense magnetic group, but the coil conducting electric current on this coil holder, so that produce magnetic induction with this sense magnetic group, this coil holder can produce relative to this sense magnetic group and move by this.
According to such scheme, the present invention is for improveing the shortcoming of commonly using structure, and it utilizes a pedestal that one room is set, and a location axis hole is set in the bottom of this room, a sense magnetic group is combined in fast and accurately the middle position of this room.Simultaneously, this sense magnetic group also can select to be provided with a lead angle in end periphery.By this, the present invention can promote the assembling degree of accuracy of voice coil motor really relatively.
Description of drawings
Fig. 1 is an assembled sectional view of commonly using voice coil motor structure.
Fig. 2 is the exploded perspective view of the voice coil motor structure of first embodiment of the invention.
Fig. 3 is the assembled sectional view of the voice coil motor structure of first embodiment of the invention.
Fig. 4 is the assembled sectional view of the voice coil motor structure of second embodiment of the invention.
Fig. 5 is the assembled sectional view of the voice coil motor structure of third embodiment of the invention.
Fig. 6 is the assembled sectional view of the voice coil motor structure of fourth embodiment of the invention.
The main element symbol description
10 ... pedestal 11 ... room 12 ... magnetic inductive block
13 ... permanent magnet 14 ... coil holder 15 ... coil
2 ... pedestal 20 ... room 21 ... positioning shaft hole
22 ... assembly hole 3 ... sense magnetic group 31 ... permanent magnet
311 ... clip projection 32 ... magnetic inductive block 321 ... lead angle
322 ... locating convex block 323 ... shoulder 324 ... the clip axis hole
3 ' ... sense magnetic group 31 ' ... lead angle 4 ... coil holder
41 ... coil 42 ... screw 43 ... recess
Embodiment
With reference to shown in Figure 2, the voice coil motor structure of first embodiment of the invention comprises a pedestal 2, a sense magnetic group 3 and a coil holder 4.This voice coil motor can select to be applied to various storage devices inside, for example is used for the read head (not illustrating) that accurate microspur moves Hard Disk Drive or CD-ROM device inside.
With reference to shown in Figure 2, the pedestal 2 of first embodiment of the invention generally is " protruding " font cylindrical drum.This pedestal 2 is provided with a room 20, location axis hole 21 and several assembly holes 22.This room 20 is cylindrical drum.This positioning shaft hole 21 is opened in the middle position of these room 20 bottoms.This assembly hole 22 for example is assembled in suitable storage device (not illustrating) inside in order to this pedestal 2 is assembled in the appropriate location.
Refer again to shown in Figure 2ly, the sense magnetic group 3 of first embodiment of the invention comprises a permanent magnet 31 and a magnetic inductive block 32.This permanent magnet 31 and magnetic inductive block 32 coaxial precisions are combined into one.In addition, this magnetic inductive block 32 is made by permeability magnetic material, for example ferroalloy, stainless steel etc.The external diameter essence of this magnetic inductive block 32 is corresponding to the internal diameter of the positioning shaft hole 21 of this pedestal 2.Moreover the end periphery of this magnetic inductive block 32 preferably selects to form a lead angle 321, so that carry out follow-up assembling.
Refer again to shown in Figure 2, coil holder 4 sheathed coils 41 of first embodiment of the invention.This coil holder 4 is made by non-magnet material, and the upper surface of this coil holder 4 is provided with several screws 42 and a circuit board (not illustrating) of right quantity, and its lower surface is provided with a recess 43.This screw 42 is in order in conjunction with suitable load (Payload), for example the read head of storage device (not illustrating).
With reference to shown in Figure 3, when voice coil motor of the present invention is assembled, at first with this permanent magnet 31 and magnetic inductive block 32 coaxial this sense magnetic groups 3 that are combined into.Then, this sense magnetic group 3 can be selected to embed in this positioning shaft hole 21 above or below the room 20 of this pedestal 2, so that will feel the corresponding accurately middle position that is installed in this room 20 of magnetic group 3.Because magnetic inductive block 32 bottoms of this sense magnetic group 3 are provided with this lead angle 321, therefore this sense magnetic group 3 helps in this positioning shaft hole 21 of smooth-going embedding from top to bottom.In other words, the present invention is by being provided with this positioning shaft hole 21 at this pedestal 2, can reduce in the assembling processing procedure demand to accurate assembling fixture.Moreover when follow-up use, this pedestal 2 can utilize this assembly hole 22 to be assembled in appropriate location (for example in the storage device).At first, this coil holder 4 is inserted in the room 20 of this pedestal 2, and be sheathed on this sense magnetic group 3 tops.Then, the screw 42 of this coil holder 4 utilizes several screw rods in conjunction with suitable load (for example read head).When this coil 41 conductings one electric current, this coil 41 will produce magnetic induction with this permanent magnet 31, so can form a driving force that is directly proportional with electric current, move this load for microspur.
With reference to shown in Figure 4, it discloses the voice coil motor structure of second embodiment of the invention.Compared to first embodiment, second embodiment forms a location protuberance 322 and a shoulder 323 in magnetic inductive block 32 bottoms of this sense magnetic group 3.The external diameter essence of this positioning convex portion 322 equals the internal diameter of the positioning shaft hole 21 of this pedestal 2, and the root edge of this location protuberance 322 is provided with this lead angle 321 equally.In when assembling, this sense magnetic group 3 can be utilized in the smooth-going positioning shaft hole 21 with these positioning convex portion 322 these pedestals 2 of embedding of this lead angle 321, and the shoulder 323 of this magnetic inductive block 32 also can be connected on the inner bottom surface of room 20 of this pedestal 2 simultaneously.By this, the present invention can further increase the assembling fiduciary level between this pedestal 2 and the sense magnetic group 3.
With reference to shown in Figure 5, it discloses the voice coil motor structure of third embodiment of the invention.Compared to first embodiment, the permanent magnet 31 of the sense magnetic group 3 of the 3rd embodiment and magnetic inductive block 32 are to select corresponding respectively form a clip projection 311 and a clip axis hole 324.By this clip projection 311 and clip axis hole 324, just can form accurate coaxial combination between this permanent magnet 31 and the magnetic inductive block 32.Therefore, the present invention not only can increase the assembly precision between this pedestal 2 and the sense magnetic group 3, also can further increase the assembly precision of this sense magnetic group 3 simultaneously and simplify its assembling processing procedure.
With reference to shown in Figure 6, it discloses the voice coil motor structure of fourth embodiment of the invention.Compared to first embodiment, the 4th embodiment directly selects to utilize single permanent magnet to make a sense magnetic group 3 ', and the end periphery of this sense magnetic group 3 ' is provided with a lead angle 31 ' equally.By this, the present invention not only can increase the assembly precision between this pedestal 2 and the sense magnetic group 3 ', also can further simplify the structure of this sense magnetic group 3 ' simultaneously.
As mentioned above, still inevitably exist in conjunction with shortcomings such as tolerance issues the time compared to the voice coil motor structure of commonly using shown in Figure 1 in conjunction with this pedestal 10, magnetic inductive block 12 and permanent magnet 13, the present invention shown in Figure 3 is provided with a location axis hole 21 by room 20 bottoms at this pedestal 2, for feeling the middle position that magnetic group 3 is combined in this room 20 fast and accurately, it can promote the assembling degree of accuracy really relatively, and simplifies assembling and structure.
Though the present invention has utilized aforementioned preferred embodiment to disclose in detail; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can doing various changes and modification, so protection scope of the present invention is as the criterion when looking the scope that claims define.
Claims (6)
1, a kind of voice coil motor structure is characterized in that, comprises:
One pedestal, it is provided with a room;
One location axis hole, it is located at the bottom center position of the room of this pedestal;
One sense magnetic group, its bottom essence be corresponding to this positioning shaft hole, thereby can be combined in this positioning shaft hole fast and accurately, so that be fixedly arranged on the middle position of this room;
One coil holder, its sheathed coil, this coil holder are inserted in this room and are set in the top of this sense magnetic group, but the coil conducting electric current on this coil holder, and so that produce magnetic induction with this sense magnetic group, this coil holder can produce relative to this sense magnetic group and move by this.
2, voice coil motor structure as claimed in claim 1 is characterized in that, the end periphery of this sense magnetic group forms a lead angle, so that should feel in the positioning shaft hole of smooth-going this pedestal of embedding of magnetic group.
3, voice coil motor structure as claimed in claim 1, it is characterized in that, form a location protuberance and a shoulder in bottom of this sense magnetic group, this sense magnetic group can utilize this positioning convex portion to embed in the positioning shaft hole of this pedestal, and the while is connected to by this shoulder on the inner bottom surface of room of this pedestal.
4, voice coil motor structure as claimed in claim 1 is characterized in that, this sense magnetic group is provided with a permanent magnet and a magnetic inductive block, and the coaxial precision of this permanent magnet and magnetic inductive block is combined into one.
5, voice coil motor structure as claimed in claim 4 is characterized in that, this permanent magnet and magnetic inductive block are corresponding respectively to form a clip projection and a clip axis hole, so that form accurate coaxial combination between this permanent magnet and the magnetic inductive block.
6, voice coil motor structure as claimed in claim 1 is characterized in that, this sense magnetic group directly utilizes single permanent magnet to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100889267A CN100401417C (en) | 2004-11-09 | 2004-11-09 | Voice coil motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100889267A CN100401417C (en) | 2004-11-09 | 2004-11-09 | Voice coil motor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1773622A true CN1773622A (en) | 2006-05-17 |
| CN100401417C CN100401417C (en) | 2008-07-09 |
Family
ID=36760525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100889267A Expired - Fee Related CN100401417C (en) | 2004-11-09 | 2004-11-09 | Voice coil motor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100401417C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640466B (en) * | 2008-07-31 | 2012-08-29 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN103163738A (en) * | 2011-12-14 | 2013-06-19 | 上海微电子装备有限公司 | A device for compensating knife edge-driving reaction force in a lighting scanning direction and a lithographic apparatus |
| CN105449897A (en) * | 2014-08-20 | 2016-03-30 | 上海瑾冠电气科技有限公司 | Voice coil motor magnetically conductive coil |
| CN114142703A (en) * | 2021-12-03 | 2022-03-04 | 英飞睿(成都)微系统技术有限公司 | Voice coil motor and driving module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI452375B (en) * | 2008-08-29 | 2014-09-11 | Hon Hai Prec Ind Co Ltd | Voice coil motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934064B2 (en) * | 1979-12-21 | 1984-08-20 | 松下電器産業株式会社 | linear motor |
| JPH03173333A (en) * | 1989-11-30 | 1991-07-26 | Fanuc Ltd | Cooled yoke voice coil motor |
| US6267111B1 (en) * | 1999-01-25 | 2001-07-31 | William Hendricks Burton | Portable self-contained mobile vending unit |
-
2004
- 2004-11-09 CN CNB2004100889267A patent/CN100401417C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640466B (en) * | 2008-07-31 | 2012-08-29 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN103163738A (en) * | 2011-12-14 | 2013-06-19 | 上海微电子装备有限公司 | A device for compensating knife edge-driving reaction force in a lighting scanning direction and a lithographic apparatus |
| CN103163738B (en) * | 2011-12-14 | 2015-03-25 | 上海微电子装备有限公司 | A device for compensating knife edge-driving reaction force in a lighting scanning direction and a lithographic apparatus |
| CN105449897A (en) * | 2014-08-20 | 2016-03-30 | 上海瑾冠电气科技有限公司 | Voice coil motor magnetically conductive coil |
| CN114142703A (en) * | 2021-12-03 | 2022-03-04 | 英飞睿(成都)微系统技术有限公司 | Voice coil motor and driving module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100401417C (en) | 2008-07-09 |
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