CN201569776U - Lens drive device - Google Patents
Lens drive device Download PDFInfo
- Publication number
- CN201569776U CN201569776U CN2009202155266U CN200920215526U CN201569776U CN 201569776 U CN201569776 U CN 201569776U CN 2009202155266 U CN2009202155266 U CN 2009202155266U CN 200920215526 U CN200920215526 U CN 200920215526U CN 201569776 U CN201569776 U CN 201569776U
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- CN
- China
- Prior art keywords
- magnet yoke
- yoke ring
- carrier
- lens
- front baffle
- 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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Abstract
A lens drive device includes a magnet yoke ring with magnets; the magnet yoke ring is arranged between a front framework and a rear framework; a cylindrical lens carrier with a coil is arranged in the magnet yoke ring; a front gasket and a front spring leaf are arranged at the front part of the lens carrier, and a rear spring leaf is arranged at the rear part; the magnet yoke ring is arranged in the manner that the magnet yoke ring includes a rectangular outer frame with arcs on two sides, the outer frame is provided with a circular vertical rib with two symmetrical openings, a rectangular inner cavity with arcs on two sides is formed between the outer frame and the vertical rib, and the magnets have bottom edges with arcs and trapezoid shapes with asymmetric beveled edges and are arranged in four corners of the rectangular inner cavity with arcs; a magnet yoke ring circle inner end surface is arranged in the circular vertical rib of the magnet yoke ring, the lens carrier is arranged on the circle inner end surface, and the outer diameter of the lens carrier is matched with the inner diameter of the circular vertical rib of the magnet yoke ring; and the front framework and the rear framework, as well as the carrier and the base, are made by engineering plastics through injection moulding. The utility model has the advantages that the electromagnetic induction force is improved remarkably, the further miniaturization of the product is facilitated at the same time, and the assembly precision and the assembly efficiency are higher.
Description
Technical field
The utility model relates to a kind of miniature camera field; Particularly relate to a kind of lens driver that is matched in miniature camera specially.
Background technology
The existing lens driver that is matched in miniature camera is of a great variety, as Chinese patent application number 2008200023412 " a kind of lens drivers ", it comprises that one is placed in the square gabarit with band circular hole on the base and holds concurrently and is the magnet yoke ring of the outside framework of lens driver, be mounted with magnetite and coil in this magnet yoke ring, be provided with lens in the magnet yoke ring circular hole with a lens carrier, the front and back of this lens carrier respectively are provided with the front side spring of band front side pad and the rear side spring of band rear side pad, the spring filament shape of front and back side spring is presented down left-right symmetric, elimination prevents light shaft offset trickle when lens carrier moves because of deformation causes the rotation skew; Magnetite is set to triangular prismatic type and is placed in four bights of magnet yoke ring square gabarit; This Chinese patent application number 2008200023412 " a kind of lens drivers " have bigger electromagnetic induction power and good electric and mechanical characteristic; Yet it is not suitable for the supporting application of the lens driver band snap socket, that have the front and back framework; In addition, the inner-cavity structure of the interior round foreign side of the magnet yoke ring of described Chinese patent application number 2008200023412 " a kind of lens drivers " has restricted the dimensional configurations between described magnetite and the described coil, thereby influence further expands the intensity of described electromagnetic induction.
The utility model content
Technical problem to be solved in the utility model is the situation at prior art, and a kind of bigger lens driver with the described electromagnetic induction power of further enhancing of configuration sized between described magnetite and the described coil that has is provided.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of lens driver, it comprises the magnet yoke ring of a band magnetite, this magnet yoke ring is arranged between front baffle and the afterframe, be provided with the cylindric lens carrier of belt coil in this magnet yoke ring, this lens carrier is by a base support, this lens carrier front portion is provided with front pad and preceding reed, rear portion are provided with the back reed, it is characterized in that:
Described magnet yoke ring is set to have the magnet yoke ring of both sides band circular arc rectangle housing; The inboard of this rectangle housing is provided with the circular vertical chimb of two openings of band symmetric arrangement; Form the rectangular inner cavity of a both sides band circular arc between this rectangle housing and this vertical chimb; Described magnetite is set to the trapezoidal magnetite with circular arc base and two asymmetric hypotenuses; Described trapezoidal magnetite is arranged on four bights of described inner chamber; One magnet yoke ring circle inner face is set in the circular vertical chimb of described magnet yoke ring.
Because the yoke of the above both sides band circular arc rectangle housing of employing is bad and the trapezoidal magnetite of asymmetric hypotenuse, thereby makes the magnetite configurable size bigger, thereby electromagnetic induction power obtains further to enlarge.
Described front baffle is provided with center through hole and outside projection, and two outsides of this front baffle respectively are symmetrically arranged with two card bases; This card base limit is provided with the rectangle breach, and this card base inside surface lower end is provided with semicircle pilot hole.
The top of described front baffle is provided with the rectangle inner face that both sides have circular arc, one " L " shape raised line respectively is set on four angles of this inner face, this raised line position is corresponding with described card base, and described magnet yoke ring housing cooperates in the space that is installed between described " L " shape raised line and described card base; " L " shape raised line is used to locate magnet yoke ring, front pad and preceding reed, thereby realizes higher assembly precision and efficiency of assembling; Next be magnet yoke ring with preceding frame between cooperate inverted structure, help sealing with dustproof.
Described afterframe is set to the shaped as frame structure, and this afterframe dual-side respectively is provided with two semicircle projections, the semicircle pilot hole phase configuration of this semicircle projection and described front baffle card base inside surface.Its effect is the semi-circular hole on the card base and the semicircle projection phase configuration of afterframe, thus make connect between front baffle and the afterframe tightr reliable.
Described cylindric lens carrier is configured on the described magnet yoke ring circle inner face, the internal diameter phase configuration of the external diameter of this cylindric carrier and the circular vertical chimb of described magnet yoke ring; The periphery of described cylindric lens carrier is symmetrically arranged with two ribbed arches.Its effect is to prevent the carrier rotation.
The opening phase configuration of described ribbed arch and described magnet yoke ring; Described carrier top periphery is provided with step surface; This step surface and magnet yoke ring step surface breach phase configuration; Described ribbed arch external diameter and described internal coil diameter phase configuration; Its effect is can support and accurate set winding.
Described ribbed arch bottom is provided with register pin; The symmetria bilateralis of described back reed is provided with positioning round orifice, and this positioning round orifice is riveted cooperation mutually with described register pin; Its function is the strength of joint that can improve greatly between back reed and the carrier, thereby makes carrier movement stable and reliable for performance.
Described front pad is arranged between described magnet yoke ring rectangle housing and the described preceding reed, and this preceding reed is arranged between described front pad and the described front baffle; This front pad is set to have the rectangular-shaped of circular arc.Reed obtains evenly to flatten and have the sealing function good to the utility model before making.
Described front baffle, described afterframe, described carrier and described base adopt the engineering plastics injection mo(u)lding; It has the physical dimension stable properties, thereby realizes that pick-up current of the present utility model is more stable.
The utility model compared with prior art, its advantage is that electromagnetic induction power obtains to significantly improve, it is further microminiaturized to help product simultaneously; Next is to have higher assembly quality and efficiency of assembling.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a three-dimensional exploded view of the present utility model;
Fig. 3 is a front baffle stereographic map of the present utility model;
Fig. 4 is a magnet yoke ring stereographic map of the present utility model;
Fig. 5 is a magnetite stereographic map of the present utility model;
Fig. 6 is a carrier stereographic map of the present utility model;
Fig. 7 is an afterframe stereographic map of the present utility model;
Fig. 8 is a base stereographic map of the present utility model;
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Show an embodiment of the present utility model as Fig. 1 to Fig. 8, it comprise front baffle 1 and with this front baffle 1 corresponding afterframe 8.This front baffle 1 is provided with center through hole 16 and outside projection 12; Two outsides of this front baffle respectively are symmetrically arranged with two card bases 11; This card base limit is provided with rectangle breach 14, and this card base inside surface lower end is provided with semicircle pilot hole 13.
The front baffle arch is provided with the rectangle inner face 17 that both sides have circular arc, and one " L " shape raised line 15 respectively is set on four angles of this inner face, and these raised line 15 positions are corresponding with card base 11.
Afterframe 8 is set to the shaped as frame structure, and these afterframe 8 dual-sides respectively are provided with two semicircle projections 83, and this semicircle projection 83 and first circular pilot hole 13 phase configuration of front baffle 1 card base make front baffle and afterframe cooperate one.Described afterframe 8 is provided with afterframe rectangle inner face 82 and oblique locating surface 84.
Described magnet yoke ring is set to have the magnet yoke ring 4 of the rectangle housing 42 of both sides band circular arc; The inboard of this housing is provided with the circular vertical chimb 43 of two openings 46 of band symmetric arrangement; Form an inner chamber 45 between this housing 42 and the vertical chimb 43, magnetite 5 is arranged on four bights of this inner chamber.The bottom of opening 46 is provided with a magnet yoke ring and locatees with half hole 41.
Magnet yoke ring 4 is arranged between front baffle 1 and the afterframe 8.
The vertical chimb 43 of described circle is provided with the breach 44 and the circular inner face 47 of two symmetric arrangement.
Described magnetite is set to the trapezoidal magnetite 5 with circular arc base 51 and two asymmetric hypotenuses 52,53; This trapezoidal magnetite has the dimensional configurations between desirable and the described coil, makes electromagnetic intensity of the present utility model increase.
Magnet yoke ring housing 42 cooperates in the space that is installed between front baffle raised line 15 and the card base 11.
Between magnet yoke ring housing 42 and the front baffle 1 front pad 3 is set, reed 2 before being provided with between front pad 3 and the front baffle 1; This front pad 3 is set to have the rectangular-shaped of circular arc.
Dispose cylindric carrier 7 on the circular inner face 47 of described magnet yoke ring, the aperture phase configuration of the external diameter of this cylindric carrier 7 and circular vertical chimb 43.Described carrier 7 is supported by preceding reed 2 and back reed 9.The periphery of this carrier 7 is symmetrically arranged with two ribbed arches 73, on these ribbed arch 73 limits carrier is set and locatees half hole 71; Ribbed arch 73 bottoms are provided with register pin 72; The top periphery of carrier 7 is provided with step surface 74.Opening 46 phase configuration of ribbed arch 73 and magnet yoke ring, step surface breach 44 phase configuration of step surface 74 and magnet yoke ring.
Carrier 7 peripheries dispose coil 6.
Afterframe rectangle inner face 82 is provided with base 10, and this base 10 is provided with outer tiltedly locating surface 103; Be somebody's turn to do outer tiltedly locating surface 103 and interior oblique locating surface 84 phase configuration of afterframe, this base plays the effect of prop carrier.
Back reed 9 is set between described afterframe 8 and the base 10, this back reed 9 is provided with two power pins 94, this power pins 94 welds together with the extension line of coil 6, driving power, when coil 6 passes through electric current, go out electromagnetic force at magnetite 5 and the magnet yoke ring 4 inner magnetic field inductions that constitute, carrier 7 front and back on optical axis direction are moved, when carrier 7 is moved, preceding reed 2 and back reed 9 produce reacting forces, when this reacting force and electromagnetic force equilibrium, carrier 7 just can remain on certain position, reaches the purpose of camera automatic focusing.
Characteristics of the present utility model are:
Front baffle 1, afterframe 8, base 10 and carrier 7 adopt engineering plastics to make, and make physical dimension more stable, thereby realize that pick-up current of the present utility model is more stable.
Front pad 3 is arranged between magnet yoke ring 4 and the preceding reed 2, plays the effect of sealing and the preceding reed 2 of pressing.
The semi-circular hole 13 on the front baffle card base and semicircle projection 83 phase configuration of afterframe, thus make connect between front baffle and the afterframe tightr reliable.
Magnet yoke ring 4 has the rectangle housing 42 and circular vertical chimb 43 of both sides band circular arc, forms inner chamber 45 between housing 42 and the circular vertical chimb 43, thereby makes full use of the space.
Magnetite 5 is set to the asymmetric trapezoidal shape with the circular arc base, thereby makes the configuration area between magnetite 5 and the coil 6 bigger.
The ribbed arch 72 of carrier and opening 46 phase configuration of magnet yoke ring, step surface breach 44 phase configuration of carrier step surface 74 and magnet yoke ring, thus prevent that carrier is rotary shifted.
Back reed circular hole and carrier register pin 72 phase configuration, thus strength of joint between back reed and the carrier improved greatly, make carrier movement stable and reliable for performance.
Claims (9)
1. lens driver, it comprises the magnet yoke ring of a band magnetite, this magnet yoke ring is arranged between front baffle and the afterframe, be provided with the cylindric lens carrier of belt coil in this magnet yoke ring, this lens carrier is by a base support, this lens carrier front portion is provided with front pad and preceding reed, rear portion are provided with the back reed, it is characterized in that:
Described magnet yoke ring is set to have the magnet yoke ring (4) of both sides band circular arc rectangle housings (42); The inboard of this rectangle housing (42) is provided with the circular vertical chimb (43) of band two openings of symmetric arrangement (46); Form the rectangular inner cavity (45) of a both sides band circular arc between this rectangle housing and this vertical chimb; Described magnetite is set to the trapezoidal magnetite (5) with circular arc base (51) and two asymmetric hypotenuses (52), (53); Described trapezoidal magnetite (5) is arranged on four bights of described inner chamber (45); One magnet yoke ring circle inner face (47) is set in the circular vertical chimb (43) of described magnet yoke ring (4).
2. lens driver according to claim 1 is characterized in that: described front baffle (1) is provided with center through hole (16) and outside projection (12), and two outsides of this front baffle respectively are symmetrically arranged with two card bases (11); This card base limit is provided with rectangle breach (14), and this card base inside surface lower end is provided with semicircle pilot hole (13).
3. lens driver according to claim 1 and 2, it is characterized in that: the top of described front baffle (1) is provided with the rectangle inner face (17) that both sides have circular arc, on four angles of this inner face (17) one " L " shape raised line (15) is set respectively, this raised line (15) position is corresponding with described card base (11), and described " L " shape raised line (15) is used to locate described magnet yoke ring, described front pad and described preceding reed; Described magnet yoke ring housing (42) cooperates in the space that is installed between described " L " shape raised line (15) and the described card base (11).
4. lens driver according to claim 1 and 2, it is characterized in that: described afterframe (8) is set to the shaped as frame structure, this afterframe dual-side respectively is provided with two semicircle projections (83), semicircle pilot hole (13) phase configuration of this semicircle projection and described front baffle card base inside surface.
5. lens driver according to claim 1, it is characterized in that: described cylindric lens carrier (7) is configured on the described magnet yoke ring circle inner face (47), the internal diameter phase configuration of the external diameter of this cylindric carrier and the circular vertical chimb (43) of described magnet yoke ring; The periphery of described cylindric lens carrier (7) is symmetrically arranged with two ribbed arches (73).
6. lens driver according to claim 1 or 5 is characterized in that: opening (46) phase configuration of described ribbed arch (73) and described magnet yoke ring; Described carrier (7) top periphery is provided with step surface (74); This step surface (74) and magnet yoke ring step surface breach (44) phase configuration; The external diameter of described ribbed arch (73) and the internal diameter phase configuration of described coil.
7. lens driver according to claim 6 is characterized in that: described ribbed arch (73) bottom is provided with register pin (72); The symmetria bilateralis of described back reed (9) is provided with positioning round orifice, and this positioning round orifice is riveted cooperation mutually with described register pin (72).
8. lens driver according to claim 3, it is characterized in that: described front pad (3) is arranged between described magnet yoke ring rectangle housing (42) and the described preceding reed (2), and this preceding reed (2) is arranged between described front pad (3) and the described front baffle (1); This front pad (3) is set to have the rectangular-shaped of circular arc.
9. lens driver according to claim 1 is characterized in that: described front baffle (1), described afterframe (8), described carrier (7) adopt the engineering plastics injection mo(u)lding with described base (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202155266U CN201569776U (en) | 2009-12-29 | 2009-12-29 | Lens drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202155266U CN201569776U (en) | 2009-12-29 | 2009-12-29 | Lens drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201569776U true CN201569776U (en) | 2010-09-01 |
Family
ID=42662070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202155266U Expired - Fee Related CN201569776U (en) | 2009-12-29 | 2009-12-29 | Lens drive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201569776U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738704B (en) * | 2009-12-29 | 2011-06-01 | 宁波金诚泰电子有限公司 | Lens driving device |
-
2009
- 2009-12-29 CN CN2009202155266U patent/CN201569776U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101738704B (en) * | 2009-12-29 | 2011-06-01 | 宁波金诚泰电子有限公司 | Lens driving device |
| WO2011079505A1 (en) * | 2009-12-29 | 2011-07-07 | 宁波金诚泰电子有限公司 | Lens driving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20111229 |