CN103178682A - Voice coil motor - Google Patents
Voice coil motor Download PDFInfo
- Publication number
- CN103178682A CN103178682A CN2011104323944A CN201110432394A CN103178682A CN 103178682 A CN103178682 A CN 103178682A CN 2011104323944 A CN2011104323944 A CN 2011104323944A CN 201110432394 A CN201110432394 A CN 201110432394A CN 103178682 A CN103178682 A CN 103178682A
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- Prior art keywords
- voice coil
- coil motor
- face
- magnet
- shell
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Abstract
A voice coil motor comprises a casing and a fixing frame, a movable assembly set, a first elastic piece and at least one magnet which are accommodated in the casing. The casing comprises a top plate and a side wall extending along a direction perpendicular to the top plate. The fixing frame is arranged on the top plate. The first elastic piece is mounted with the fixing frame, and the movable assembly set is accommodated in the casing and comprises a hollow winding frame and a coil wound outside the hollow winding frame. The first elastic piece and the fixing frame are arranged on a first end face of the hollow winding frame; and the at least one magnet is arranged between the casing and the movable assembly set and fixed on a surface of the side wall facing towards the movable assembly set. According to the voice coil motor, the at least one magnet is directly mounted onto at least one inner surface, the fixing frame is mounted on the first end face of the hollow winding frame instead of surrounding the hollow winding frame, and accordingly, the size can be reduced, and the voice coil motor structure is simplified.
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 the advantages such as cheap less, is suitable as the actuator in electronic product (as digital camera, mobile phone, Digital Video etc.).Existing voice coil motor generally includes a shell, one and is contained in fixedly dress group in shell, one and is contained in actively the interior activity dress group of fixing dress group and two and is fixed on fixing dress group and is used for the shell fragment that driving activity dress group resets.Fixedly the dress group generally includes the magnet of driving activity dress group motion and usually need to include a fixed mount, is used for fixing magnet and shell fragment.Described fixed mount need encirclement activity dress group and the structure that coordinates with magnet and shell fragment of formation, so volume is large and complex structure, not only bad for the miniaturization of voice coil motor and increase manufacturing cost.
Summary of the invention
In view of this, be necessary to provide in fact a kind of voice coil motor that is conducive to miniaturization and can reduces manufacturing cost.
A kind of voice coil motor comprises: a shell and be contained in a fixed frame, a movable dress group, first shell fragment and at least one magnet in described shell.Described shell comprises a top board and the sidewall perpendicular to described top board extension.Described fixed frame is arranged on described top board.Described the first shell fragment is mounted to described fixed frame, and described movable dress group is contained in described shell and comprises a hollow frame and be set around the outer coil of described hollow frame.Described the first shell fragment and described fixed frame are arranged at the first end face of described hollow frame.Described at least one magnet is arranged between described shell and described movable dress group and is fixed to described sidewall on the surface of described movable dress group.
Compared with prior art, at least one magnet of the present invention directly is mounted to described sidewall on the surface of described movable dress group, and described the first shell fragment is installed on described frame fixed frame, described fixed frame is arranged at the first end face of described hollow frame but not surrounds described movable dress group and only need and coordinates and need not to coordinate with described at least one magnet with described the first shell fragment, therefore can reduced volume and make described voice coil motor designs simplification, be conducive to the miniaturization of voice coil motor and reduce manufacturing cost.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the voice coil motor of the preferred embodiment for the present invention.
Fig. 2 is the exploded view of another angle of voice coil motor shown in Figure 1.
Fig. 3 is the part assembly drawing of voice coil motor shown in Figure 2.
Fig. 4 is the part assembly drawing of voice coil motor shown in Figure 3.
Fig. 5 is the assembly drawing of voice coil motor shown in Figure 4.
The main element symbol description
| |
100 |
| Shell | 10 |
| |
12 |
| Through |
122 |
| |
14 |
| |
14a |
| |
142 |
| |
144 |
| |
146 |
| Fixed |
20 |
| |
22 |
| Assembling |
24 |
| The |
242 |
| |
26 |
| |
30 |
| The |
32 |
| |
34 |
| |
36 |
| The |
322 |
| The |
324 |
| The |
326 |
| The |
328 |
| The |
42 |
| The |
422 |
| The first |
424 |
| The |
426 |
| The |
44 |
| The |
442 |
| The second |
444 |
| The |
446 |
| The |
448 |
| |
50 |
| |
60 |
| |
62 |
| The |
64 |
| |
66 |
| The |
622 |
| Groove | 624 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
See also Fig. 1 and Fig. 2, a kind of voice coil motor 100 that provides for the preferred embodiment for the present invention.Described voice coil motor 100 comprises: a shell 10, a fixed frame 20, a movable dress group 30, first shell fragment 42, second shell fragment 44, four magnets 50 and a load bearing seat 60.
Described shell 10 is used for eliminating external electromagnetic to the interference of described voice coil motor 100 and prevents the work of its exterior electrical components (not shown) of electromagnetic effect that described voice coil motor 100 produces.Described shell 10 can be that the metals such as dilval or the magnetic field shielding materials such as conductive plastics, electro-conductive glass are made.In present embodiment, described shell 10 is made for dilval.Described shell 10 comprises that one is roughly square top board 12 and the sidewall 14 from described top board 12 substantially vertical extensions.Described sidewall 14 comprises four minute sidewall 14a that extend respectively from 12 4 sides of top board.Described top board 12 and described four minutes sidewall 14a surround an accommodation space 16 jointly.The central part of described top board 12 is offered a through hole 122.Each minute, sidewall 14a comprised an inner surface 142 and an outer surface 144.Described each minute sidewall 14a extends a pair of limiting section 146 by described outer surface 144 to described receiving space 16 by impact style.Each limiting section 146 is rectangular plate shape and perpendicular to a minute sidewall 14a of correspondence.In other execution mode, each limiting section 146 also can separate manufacturing with described shell 10 and each limiting section 146 is also made by dilval, by modes such as welding, each limiting section 146 is fixed in corresponding inner surface 142.
The shape of described fixed frame 20 is corresponding with described top board 12 be roughly square.Described fixed frame 20 is made and is comprised the assembling face 24 that an abutment face 22 and and described abutment face 22 are opposing by integrally moulded.The central part of described fixed frame 20 is offered one and is roughly opening 26 square and that run through described abutment face 22 and described assembling face 24.Four corners of described assembling face 24 evenly are provided with four the first location divisions 242.In present embodiment, each first location division 242 is for cylindric and protrude from a corner of described abutment face 22 and extend to form.The also moulding separately of described the first location division 242, then connect as one by other methods of attachment such as gummed bonds, is spirally connected and described assembling face 24.In other execution modes, described each first location division 242 can be also through hole or the blind hole that extends to form to described abutment face 22 from described assembling face 24.The quantity of described the first location division 242 is not limited to four, can be at least one.
Described movable dress group 30 comprises a hollow frame 32 and is wound in the coil 34 of described hollow frame 32 outsides.Described hollow frame 32 for generally tubular and comprise first end face 322 and one with opposing the second end face 324 of described the first end face 322, on described the first end face 322 and described the second end face 324 all extension be provided with a plurality of holding sections 326.Also evenly be provided with four the second location divisions 328 on described the second end face 324.In present embodiment, each second location division 328 is for cylindric and protrude from a corner of described the second end face 324 and extend to form.The also moulding separately of described the second location division 328, then connect as one by other methods of attachment such as gummed bonds, is spirally connected and the second end face 324.The quantity of described the second location division 328 is not limited to four, can be to be at least one.Described hollow frame 32 has internal thread 36, and described internal thread 36 is used for being connected with the external screw thread of a lens barrel (not shown), so that described lens barrel and described hollow frame 32 are fixed as one.
Annular is made and be roughly to described the first shell fragment 42 by metal through punching press.Described the first shell fragment 42 comprises first housing 422 and four the first elastic part 424 that extended internally by described the first housing 422.Described the first housing 422 offers four the first location holes 426.In present embodiment, the quantity of the first location hole 426 is corresponding with the quantity of described the first location division 242, and namely each first location hole 426 is used for coordinating with corresponding first location division 242.When each first location division 242 was through hole or blind hole, described each first location hole 426 was columned projection accordingly.
Described the second shell fragment 44 is made of metal and is roughly annular.Described the second shell fragment 44 comprises the second housing 442 and four the second elastic part 444 that extended internally by described the second housing 442 of an interruption.Each second elastic part 444 offers second location hole 446.In present embodiment, the quantity of the second location hole 446 is corresponding with the quantity of described the second location division 328, and namely each second location hole 446 is used for matching with corresponding second location division 328.Described the second housing 442 also is provided with four the 3rd location holes 448.
Each magnet 50 is rectangular-shaped, and it comprises two ends 52,54.Distance between described two ends 52,54 is corresponding to the distance between a pair of limiting section 146 on an inner surface 142.
Described load bearing seat 60 is made and is comprised the bottom surface 64 that an end face 62 and and described end face 62 are opposing by integrally moulded.The central part of described load bearing seat 60 offers running through of a circle described the end face 62 and loophole 66 of described bottom surface corresponding to the through hole 122 of described top board 12.The outstanding extension of described end face 62 is provided with four the 3rd location divisions 622, and the quantity of described the 3rd location division 622 is not limited to four, can be at least one.In present embodiment, the quantity of the 3rd location hole 448 is corresponding with the quantity of described the 3rd location division 622, and namely each the 3rd location division 622 is used for coordinating with corresponding the 3rd location hole 448.Described end face 62 is also offered by described end face 62 and is extended to described bottom surface 64 four grooves 624 that are recessed to form.Described four grooves 624 are distributed in equably the side of described loophole 66 and are connected with described loophole 66.
Please consult simultaneously Fig. 3 to Fig. 5, during assembling, each minute sidewall 14a does not first stamp out a pair of limiting section 146, and in the described receiving space 16 of at first described fixed frame 20 being packed into, described abutment face 22 is resisted against on the inner surface of described top board 12 and is connected to the inner surface of described top board 12 by viscose glue.Described the first shell fragment 42 is assembled to the assembling face 24 of described fixed frame 20, wherein corresponding first location hole 426 is passed in each first location division 242, described the first housing 422 is combined by viscose glue with described assembling face 24, so described the first shell fragment 42 is mounted to described fixed frame 20.Then stamp out a pair of limiting section 146 by outer surface 144 to described receiving space 16 on each minute sidewall 14a, each magnet 50 is positioned between a pair of limiting section 146, wherein each magnet 50 two ends 52,54 of being fixed to an inner surface 142 and each magnet 50 by viscose glue are resisted against respectively one of them of a pair of limiting section 146, so, each magnet 50 is limited between a pair of limiting section 146.Described movable dress group 30 is packed in described receiving space 16, so, each magnet 50 is between corresponding one minute sidewall 14a and described movable dress group 30 and towards described movable dress group 30 again.Each holding section 326 of described the first end face 322 fastens with corresponding first elastic part 424, and at this moment, described the first shell fragment 42 and described fixed frame 20 all are positioned at described the first end face 322.Again the second shell fragment 44 is packed into described receiving space 16 and assembling and against to described the second end face 324, wherein, each holding section 326 of described the second end face 324 fastens with corresponding second elastic part 444, and each second location division 328 is passed second location hole 446.For making described the second shell fragment 44 firm with described the second end face 324 combinations, can be bonding by viscose glue between described the second housing 442 and described the second end face 324.At last described load bearing seat 60 is placed on described shell 10, corresponding the 3rd location hole 448 is passed in each the 3rd location division 622.Described load bearing seat 60 is bonding by viscose glue with described shell 10.After assembling is completed, each second elastic part 444 is contained in a corresponding groove 624, each second location division 328 is passed second location hole 446 and is resisted against in a corresponding groove 624, so, and can be so that each second elastic part 444 has larger activity space.
Four magnets of the present invention 50 directly are fixed to respectively on the inner surface 142 of four minutes sidewall 14a of shell 10, described the first shell fragment 42 is mounted on the fixed frame that is positioned at described hollow frame 32 1 ends, can simplify the structure of voice coil motor 100, reduce manufacturing cost.In addition, position and assemble owing to cooperatively interacting by described the first location division 242 and described the first location hole 426 between described fixed frame 20 and described the first shell fragment 42; Cooperatively interact by the second location division 328 and the second location hole 446 between described movable dress group 30 and position and assemble; Cooperatively interacting by described the 3rd location hole 448 and the 3rd location division 622 between described the second shell fragment 44 and described load bearing seat 60 positions and assembles, and therefore, assembles described voice coil motor 100 more convenient, quick.
In other embodiments, each divides the inner surface 142 of sidewall 14a that a pair of limiting section 146 can be set, and each magnet 50 is fixed on a corresponding inner surface 142.
In other embodiments, the shape of described shell 10 can and comprise a columned sidewall for hollow cylindrical, corresponding, described fixed frame 20, the first shell fragment 42 and the second shell fragment 44 are also annulus.Each magnet 50 can be corresponding for circular arc and be fixed to the inner surface of the sidewall of hollow cylindrical shell, and the quantity of circular arc magnet can at least one.Described voice coil motor 100 also can only comprise the magnet of an annular, the magnet of described circular arc is fixed to the inner surface of the sidewall of hollow cylindrical shell.
In addition, those skilled in the art also can do other variation in spirit of the present invention.Therefore the variation that these are done according to spirit of the present invention is within all should being included in the present invention's scope required for protection.
Claims (10)
1. voice coil motor comprises: a shell and be contained in a fixed frame, a movable dress group, first shell fragment and at least one magnet in described shell; Described shell comprises a top board and the sidewall perpendicular to described top board extension; Described fixed frame is arranged on described top board; Described the first shell fragment is mounted to described fixed frame, and described movable dress group is contained in described shell and comprises a hollow frame and be set around the outer coil of described hollow frame; Described the first shell fragment and described fixed frame are arranged at the first end face of described hollow frame; Described at least one magnet is arranged between described shell and described movable dress group and is fixed to described sidewall on the surface of described movable dress group.
2. voice coil motor as claimed in claim 1, it is characterized in that: described shell is made by the tweezer ferroalloy, described sidewall further comprises at least one pair of limiting section that forms by impact style that extends to described movable dress group, and each magnet in described at least one magnet is limited in respectively between a pair of limiting section of correspondence in described at least one pair of limiting section.
3. voice coil motor as claimed in claim 2, it is characterized in that: described sidewall is comprised of four minutes sidewalls, and described top board is square; Sidewall vertically extended to form from four sides of described top board in described four minutes; Described at least one magnet is four magnets, described four magnets are corresponding with described four minutes sidewalls, and be mounted to respectively its corresponding divide sidewall on the surface of described movable dress group.
4. voice coil motor as claimed in claim 2, it is characterized in that: described fixed frame comprises an abutment face and an assembling face; Described abutment face is resisted against described top board and is connected to described top board by viscose glue, and described assembling face extension is provided with at least one first location division; Described the first shell fragment offers at least one first location hole, and each first location division correspondence is arranged in first location hole.
5. voice coil motor as claimed in claim 4, it is characterized in that: described hollow frame also comprises second end face, described the second end face extends and is provided with at least one second location division; Described voice coil motor also comprises second shell fragment, and described the second shell fragment offers at least one second location hole, and described the second shell fragment is resisted against described the second end face and each the second location division is arranged in second location hole.
6. voice coil motor as claimed in claim 5, it is characterized in that: described voice coil motor also comprises a load bearing seat, and described load bearing seat comprises the bottom surface that an end face and and described end face are opposing, and described end face extends and is provided with at least one the 3rd location division; Described the second shell fragment also offers at least one the 3rd location hole, and each the 3rd location division is arranged in the 3rd location hole.
7. voice coil motor as claimed in claim 6, it is characterized in that: the central part of described load bearing seat offers a loophole, and described end face extends to described bottom surface depression and is provided with at least one groove, and each groove is connected with described loophole; Described the second shell fragment comprises at least one elastic part, and each elastic part is contained in a groove.
8. voice coil motor as claimed in claim 7, it is characterized in that: each second location hole is arranged on a described corresponding elastic part; Each second location division is resisted against in a corresponding groove.
9. voice coil motor as claimed in claim 1 is characterized in that: described shell is hollow tubular and comprises a columned sidewall, and described at least one magnet is the circular arc magnet.
10. voice coil motor as claimed in claim 1 is characterized in that: described shell is hollow tubular and comprises a columned sidewall, and described at least one magnet is the annular magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104323944A CN103178682A (en) | 2011-12-21 | 2011-12-21 | Voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104323944A CN103178682A (en) | 2011-12-21 | 2011-12-21 | Voice coil motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103178682A true CN103178682A (en) | 2013-06-26 |
Family
ID=48638344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104323944A Pending CN103178682A (en) | 2011-12-21 | 2011-12-21 | Voice coil motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103178682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683318A (en) * | 2018-07-10 | 2018-10-19 | 厦门新鸿洲精密科技有限公司 | A kind of superposing type voice coil motor and its assemble method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009237192A (en) * | 2008-03-27 | 2009-10-15 | Nidec Sankyo Corp | Lens driving device |
| CN101645640A (en) * | 2008-08-05 | 2010-02-10 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN101741164A (en) * | 2008-11-17 | 2010-06-16 | 鸿富锦精密工业（深圳）有限公司 | Method for manufacturing voice coil motor, voice coil motor case and voice coil motor |
| US20110241450A1 (en) * | 2010-04-06 | 2011-10-06 | Hon Hai Precision Industry Co., Ltd. | Voice coil motor |
-
2011
- 2011-12-21 CN CN2011104323944A patent/CN103178682A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009237192A (en) * | 2008-03-27 | 2009-10-15 | Nidec Sankyo Corp | Lens driving device |
| CN101645640A (en) * | 2008-08-05 | 2010-02-10 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN101741164A (en) * | 2008-11-17 | 2010-06-16 | 鸿富锦精密工业（深圳）有限公司 | Method for manufacturing voice coil motor, voice coil motor case and voice coil motor |
| US20110241450A1 (en) * | 2010-04-06 | 2011-10-06 | Hon Hai Precision Industry Co., Ltd. | Voice coil motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683318A (en) * | 2018-07-10 | 2018-10-19 | 厦门新鸿洲精密科技有限公司 | A kind of superposing type voice coil motor and its assemble method |
| CN108683318B (en) * | 2018-07-10 | 2023-11-28 | 厦门新鸿洲精密科技有限公司 | Superimposed voice coil motor and assembly method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20130626 |