CN101640466B - Voice coil motor - Google Patents
Voice coil motor Download PDFInfo
- Publication number
- CN101640466B CN101640466B CN200810303300A CN200810303300A CN101640466B CN 101640466 B CN101640466 B CN 101640466B CN 200810303300 A CN200810303300 A CN 200810303300A CN 200810303300 A CN200810303300 A CN 200810303300A CN 101640466 B CN101640466 B CN 101640466B
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- CN
- China
- Prior art keywords
- bearing seat
- elastic piece
- voice coil
- lens cone
- coil motor
- 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.)
- Expired - Fee Related
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- Lens Barrels (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The invention relates to a voice coil motor. The voice coil motor respectively comprises a lens cone bearing seat with two opened ends and two slab elastic sheets which are respectively positioned on both ends of the lens cone bearing seat. Each slab elastic sheet is provided with an inner frame, an outer frame and an elastic part which is connected with the inner frame and the outer frame and is positioned between the inner frame and the outer frame. Both ends of the lens cone bearing seat are respectively provided with a positioning column, the inner frame of each slab elastic sheet is provided with a positioning unit, the positioning unit is provided with a surface matched with the positioning column, and is matched with the positioning column so as to respectively position the slab elastic sheets on both ends of the lens cone bearing seat. The surface of the positioning unit, which is matched with the positioning column, is a coarse surface and is fixed with the positioning column in the mode of glue application.
Description
Technical field
The present invention relates to a kind of voice coil motor.
Background technology
Voice coil motor has that volume is little, power consumption reaches advantages such as cheap less; The actuator that is suitable as in the electronic product (like digital camera, mobile phone, DV etc.) (sees also Design of a voice coil motor used in the focusing system of a digital video camera; Magnetics; IEEE Transactions on Volume 41, Issue 10, Oct.2005Page (s): 3979-3981).
Existing voice coil motor is in assembling; For guaranteeing assembly precision; The reference columns that adopt carry out pre-determined bit with the mode that corresponding location hole matches to voice coil motor inner lens fitted tube and shell fragment more; After pre-determined bit finishes,, shell fragment puts glue in being equipped with the location hole of said reference column, thus fixing corresponding assembly.
Usually, the voice coil motor that assembles need pass through drops test, and the voice coil motor of test passes just can come into the market.In this test process, because the microminiaturization of voice coil motor causes some glue insufficient space between shell fragment and the camera lens fitted tube; Therefore when dropping test; Normal because the adhesion of shell fragment and camera lens fitted tube is not enough, cause shell fragment to come off, and then cause the less stable of this voice coil motor.
Summary of the invention
In view of this, provide the preferable voice coil motor of a kind of stability real for necessary.
A kind of voice coil motor, this voice coil motor comprise the lens cone bearing seat of a fixed mount, a both ends open, two flat elastic pieces that lay respectively at these lens cone bearing seat two ends.Offer one first containing cavity in this fixed mount, this lens cone bearing seat is contained in this first containing cavity.Extend four first reference columns respectively on relative two end faces of this fixed mount.Each flat elastic piece has an inside casing, a housing, connects this inside casing and this housing and the elastic part between this inside casing and this housing and a binding post that is arranged at this housing.This housing is made up of four edges; This four edges joins end to end to surround the ring of a closure; This four edges intersects four bights of formation; Four bights of this housing are respectively arranged with four location holes that are used with four first reference columns, and these four location holes and the first corresponding reference column match housing with this flat elastic piece with respect to this fixed mount location, and between the inwall of this location hole and corresponding first reference column, through a glue this flat elastic piece are fixed on this fixed mount.The two ends of this lens cone bearing seat are respectively arranged with a plurality of second reference columns; The inside casing of this flat elastic piece is provided with positioning unit; This positioning unit has the surface that cooperates with this second reference column, and this positioning unit cooperates the two ends that this flat elastic piece are positioned this lens cone bearing seat respectively with this second reference column.The surface that this positioning unit cooperates with this second reference column is a rough surface, fixes through a glue mode with this second reference column, and the profile arithmetic average error of this rough surface is 5 microns to 25 microns.
With respect to prior art; Because the surface that the positioning unit of this voice coil motor flat elastic piece cooperates with this reference column is a rough surface; So; The location pin deck glue of the positioning unit of this flat elastic piece and this lens cone bearing seat is fixedly the time, and this glue infiltrates in the hole of this rough surface into and is stored in this hole, makes this glue be attached to the surface of this positioning unit more firmly; Like this then make the bonding between this flat elastic piece and this reference column more firm, this flat elastic piece is fixed on this lens cone bearing seat.In dropping test and usual use, because this flat elastic piece combines firmly with this lens cone bearing seat, this flat elastic piece is not easy to come off from this lens cone bearing seat, therefore, and this voice coil motor stable preferable.
Description of drawings
The decomposing schematic representation of the voice coil motor that Fig. 1 provides for the embodiment of the invention.
The structural representation of a kind of flat elastic piece of the voice coil motor that Fig. 2 provides for the embodiment of the invention.
The structural representation of the another kind of flat elastic piece of the voice coil motor that Fig. 3 provides for the embodiment of the invention.
Embodiment
To combine accompanying drawing that the present invention is done further detailed description below.
See also Fig. 1, it is the voice coil motor 10 that the embodiment of the invention provided, and can supply a camera lens module (figure does not show) to use.This voice coil motor 10 comprises: the fixedly dress group of a both ends open 30, one be contained in this fixedly in the dress group 30 and the activity dress group of both ends open 40, two lay respectively at this fixedly flat elastic piece 50 at the two ends of dress group 30.
Fixedly dress group 30 has a fixed mount 32 and the four packaged magnet of being located in the fixed mount 32 34.This fixed mount 32 is support bodys that are the cuboid tubular.Four square sidewalls of this fixed mount 32 surround one first containing cavity 321, and this first containing cavity 321 is used for accommodating movable dress group 40.The intersection of adjacent wall forms a prism 323, thereby makes this fixed mount 32 have four prisms 323.Four prism 323 edges of this fixed mount 32 extend to form four first reference columns 324 to the bottom of fixed mount 32 respectively with the direction of fixed mount 32 central axes; Extend to form four first reference columns 324 to the top of fixed mount 32; This first reference column 324 is a cylinder, and this first reference column 324 is used for flat elastic piece 50 with respect to fixed mount 32 location.
Be appreciated that the also moulding separately of this first reference column 324, fix as one through gummed other consolidation methods and fixed mount 32 such as bond, be threaded again.
This activity dress group 40 is installed in first containing cavity 321 of fixing dress group 30, and should activity dress group 40 can with respect to this fixedly dress group 30 move along the fixing central axis direction of dress group 30.This activity dress group 40 has a lens cone bearing seat 41 and is around in the coil 42 of these lens cone bearing seat 41 outer walls.The center of this lens cone bearing seat 41 offers columniform second containing cavity 412.This second containing cavity 412 is used for accommodating the lens barrel (figure does not show) in the camera lens module.This lens cone bearing seat 41 has relative top 410 and bottom 411; Circumferencial direction equal angles at this top 410 along second containing cavity 412 is distributed with four second reference columns 413; Equally; Be distributed with four second reference columns 413 (figure does not show) in this bottom 411 along the circumferencial direction equal angles of second containing cavity 412, this second reference column 413 is that radial section is semicircular semicylinder.This second reference column 413 is used for flat elastic piece 50 with respect to lens cone bearing seat 41 location.
Be appreciated that the also moulding separately of this second reference column 413, fix as one through gummed other consolidation methods and lens cone bearing seat 41 such as bond, be threaded again.
Please consult Fig. 1 and Fig. 2 in the lump, the structural representation of a kind of flat elastic piece of the voice coil motor that Fig. 2 provides for the embodiment of the invention.The binding post 55 that this flat elastic piece 50 has an inside casing 53, a housing 52, connect this inside casing 53 and this housing 52 and the elastic part 54 between this inside casing 53 and this housing 52 and be arranged at this housing 52.The inside casing 53 of this flat elastic piece 50 limits a through hole 51, and this through hole 51 makes light can pass through this flat elastic piece 50.The structure of these two flat elastic pieces 50 is except the length difference of binding post 55, and other structures are identical.
Four bights of this housing 52 are respectively arranged with the location hole 521 that is used with first reference column 324.This location hole 521 matches with first reference column 324 housing 52 of flat elastic piece 50 is located with respect to fixed mount 32, and between these location hole 521 inwalls and first reference column 324, through a glue flat elastic piece 50 is fixed on the fixed mount 32.
This inside casing 53 is provided with positioning unit 531, and in the present embodiment, this positioning unit 531 is a location notch, and the opening of this location notch is communicated with towards through hole 51 and with through hole 51.This location notch has a bottom surface 532, and this bottom surface 532 is a rough surface, and this rough surface is a vesicular texture, and this rough surface can be through splashing a kind of formation in the engraving methods such as etching, ion beam milling, electric paste etching and reactive ion beam etching.The number range of the profile arithmetic average error Ra of this rough surface is 5 microns to 25 microns.This location notch matches with second reference column 413 flat elastic piece 50 is located with respect to lens cone bearing seat 41, and between this location notch and second reference column 413, through a glue flat elastic piece 50 is fixed on the lens cone bearing seat 41.
Because the bottom surface 532 of this location notch is a rough surface; It is vesicular texture; So; When glue splashed between bottom surface 532 and this second reference column 413 of this location notch, this glue infiltrated in the vesicular texture of this rough surface into and is stored in the hole of this vesicular texture, makes this glue be attached to the bottom surface 532 of location notch more firmly.Like this then make the bonding between this bottom surface 532 and this second reference column 413 more firm, this flat elastic piece 50 is securely fixed on this lens cone bearing seat 41.In dropping test and usual use, because this flat elastic piece 50 combines firmly with this lens cone bearing seat 41, this flat elastic piece 50 is not easy to come off from this lens cone bearing seat 41, therefore, and this voice coil motor 10 stable preferable.
Please consult Fig. 1 and Fig. 3 in the lump, the structural representation of the another kind of flat elastic piece of the voice coil motor that Fig. 3 provides for the embodiment of the invention.The structure of this flat elastic piece is identical with the structure of above-mentioned flat elastic piece, and further, the inside casing 53 of this flat elastic piece 50 has the surface 533 that contacts with the top 410 of lens cone bearing seat 41, and this surface 533 is a rough surface.This rough surface is a vesicular texture, and this rough surface can be through splashing a kind of formation in the engraving methods such as etching, ion beam milling, electric paste etching and reactive ion beam etching.The number range of the profile arithmetic average error Ra of this rough surface is 5 microns to 25 microns.This location notch matches with second reference column 413 flat elastic piece 50 with respect to lens cone bearing seat 41 location; And between the bottom surface 532 of this location notch and second reference column 413, put glue; Between the top 410 of the surface 533 of this inside casing 53 and this lens cone bearing seat 41, put glue, this flat elastic piece 50 is fixed on the lens cone bearing seat 41.
Because the bottom surface 532 of this location notch be a rough surface, and the surface 533 that the inside casing 53 of this flat elastic piece 50 contacts with this lens cone bearing seat 41 is rough surface, and this rough surface is a vesicular texture.So; Splash into when glue between the bottom surface 532 and this second reference column 413 of this location notch; In the time of between the inside casing 53 of this flat elastic piece 50 and this lens cone bearing seat 41; This glue infiltrates in the vesicular texture of this rough surface into and is stored in the hole of this vesicular texture, makes this glue be attached to the bottom surface 532 and the surface 533 of location notch more firmly, and is like this then make the bonding between this bottom surface 532 and this second reference column 413 more firm; Make between surface 533 and this lens cone bearing seat 41 of inside casing 53 bonding more firm, this flat elastic piece 50 is securely fixed on this lens cone bearing seat 41.In dropping test and usual use, because this flat elastic piece 50 combines firmly with this lens cone bearing seat 41, this flat elastic piece 50 is not easy to come off from this lens cone bearing seat 41, therefore, and this voice coil motor 10 stable preferable.
Certainly, second reference column 413 that is arranged on this lens cone bearing seat 41 also can be cylinder, should be location hole with the positioning unit 531 of the flat elastic piece that cooperates 50 of this second reference column 413 so.Second reference column 413 of this lens cone bearing seat that cooperatively interacts 41 is not limit with the quantity of the positioning unit 531 of this flat elastic piece 50, can be two, three or five etc. yet.
The surface of location hole 521 that is appreciated that the housing 52 of this flat elastic piece 50 also can be designed to rough surface, through between first reference column 324 of this location hole 521 and fixed mount 32, putting glue, this flat elastic piece 50 is fixed on this fixed mount 32.
In addition, this voice coil motor 10 also can only comprise a flat elastic piece 50.The shape of the housing 52 of this flat elastic piece 50 also can be other geometry such as pentagon or hexagon.
Coil 42 is communicated with external circuit; Make coil 42 energisings; This hot-wire coil 42 receives the effect of power in the magnetic field that fixedly dress group 30 produces; Drive lens cone bearing seat 41 moves along the central axis direction of this lens cone bearing seat 41, and when coil 42 outages, the elastic-restoring force of flat elastic piece 50 drives this lens cone bearing seat 41 and gets back to initial position.And for this voice coil motor 10 cushion effect is provided when this flat elastic piece 50 can receive external force collision in the side direction of voice coil motor 10, thereby protection voice coil motor 10 makes it have long useful life.
In addition, those skilled in the art can also do other variation in spirit of the present invention, and certainly, these all should be included within the present invention's scope required for protection according to the variation that the present invention's spirit is done.
Claims (5)
1. voice coil motor, this voice coil motor comprises the lens cone bearing seat of a fixed mount, a both ends open, two flat elastic pieces that lay respectively at these lens cone bearing seat two ends; Offer one first containing cavity in this fixed mount; This lens cone bearing seat is contained in this first containing cavity, and each flat elastic piece has an inside casing, a housing, connects this inside casing and this housing and the elastic part between this inside casing and this housing and a binding post that is arranged at this housing; This housing is made up of four edges; This four edges joins end to end to surround the ring of a closure, and this four edges intersects four bights of formation, and four bights of this housing are respectively arranged with four location holes that are used with four first reference columns; These four location holes match with the first corresponding reference column housing of this flat elastic piece are located with respect to this fixed mount; And between the inwall of this location hole and corresponding first reference column, through a glue this flat elastic piece is fixed on this fixed mount, the two ends of this lens cone bearing seat are respectively arranged with a plurality of second reference columns, and the inside casing of this flat elastic piece is provided with positioning unit; This positioning unit has the surface that cooperates with this second reference column; This positioning unit cooperates the two ends that this flat elastic piece are positioned this lens cone bearing seat respectively with this second reference column, it is characterized in that, the surface that this positioning unit cooperates with this second reference column is a rough surface; Fix through a glue mode with this second reference column, the profile arithmetic average error of this rough surface is 5 microns to 25 microns.
2. voice coil motor as claimed in claim 1 is characterized in that, the inside casing of this flat elastic piece has two relative surfaces, and a surface in these two surfaces is a rough surface, fixes through a glue mode with the two ends of this lens cone bearing seat.
3. according to claim 1 or claim 2 voice coil motor is characterized in that this rough surface is a vesicular texture.
4. according to claim 1 or claim 2 voice coil motor is characterized in that, the surface of this rough surface for forming through a kind of method that splashes in etching, ion beam milling, electric paste etching and the reactive ion beam etching.
5. voice coil motor as claimed in claim 1 is characterized in that, this positioning unit is location hole or location notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810303300A CN101640466B (en) | 2008-07-31 | 2008-07-31 | Voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810303300A CN101640466B (en) | 2008-07-31 | 2008-07-31 | Voice coil motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101640466A CN101640466A (en) | 2010-02-03 |
| CN101640466B true CN101640466B (en) | 2012-08-29 |
Family
ID=41615308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810303300A Expired - Fee Related CN101640466B (en) | 2008-07-31 | 2008-07-31 | Voice coil motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101640466B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214967B (en) * | 2010-04-07 | 2015-06-03 | 鸿富锦精密工业（深圳）有限公司 | VCM (voice coil motor) |
| CN104518635B (en) * | 2013-09-27 | 2017-08-25 | 南昌欧菲光电技术有限公司 | Shell fragment and voice coil motor assembly |
| CN104518634B (en) * | 2013-09-27 | 2017-11-21 | 南昌欧菲光电技术有限公司 | Shell fragment and voice coil motor assembly |
| CN110890266B (en) * | 2019-11-29 | 2022-09-23 | 广州立景创新科技有限公司 | Voice coil motor surface treatment method and equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700851A (en) * | 2004-05-18 | 2005-11-23 | 刘昇羱 | Positioning method of electronic component process |
| CN1773622A (en) * | 2004-11-09 | 2006-05-17 | 建准电机工业股份有限公司 | Voice coil motor structure |
| CN201035201Y (en) * | 2007-04-27 | 2008-03-12 | 百隆光电股份有限公司 | Locating structure of lens module |
-
2008
- 2008-07-31 CN CN200810303300A patent/CN101640466B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700851A (en) * | 2004-05-18 | 2005-11-23 | 刘昇羱 | Positioning method of electronic component process |
| CN1773622A (en) * | 2004-11-09 | 2006-05-17 | 建准电机工业股份有限公司 | Voice coil motor structure |
| CN201035201Y (en) * | 2007-04-27 | 2008-03-12 | 百隆光电股份有限公司 | Locating structure of lens module |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-159401A 1999.06.15 |
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| Publication number | Publication date |
|---|---|
| CN101640466A (en) | 2010-02-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20160731 |