CN111010017A - Active cell structure of lens driving device, lens driving device and camera module - Google Patents
Active cell structure of lens driving device, lens driving device and camera module Download PDFInfo
- Publication number
- CN111010017A CN111010017A CN201911369819.4A CN201911369819A CN111010017A CN 111010017 A CN111010017 A CN 111010017A CN 201911369819 A CN201911369819 A CN 201911369819A CN 111010017 A CN111010017 A CN 111010017A
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- coil
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- section
- driving device
- lens driving
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Lens Barrels (AREA)
Abstract
A rotor structure of a lens driving device comprises a carrier and a coil, wherein the carrier is provided with a first side, a second side, a third side and a fourth side, the first side is opposite to the third side, the second side is opposite to the fourth side, the coil comprises a first coil body, a second coil body, a starting lead and a stopping lead, the first coil body and the second coil body are respectively arranged on the second side and the fourth side, the starting lead is arranged on the first side, the stopping lead is arranged on the third side, the first side is provided with a first winding slot for accommodating the starting lead, and/or the third side is provided with a second winding slot for accommodating the stopping lead. The invention also discloses a lens driving device and a camera module. The coil structure has simple winding process, and leads are fixed through the winding grooves, so that the leads are reliably positioned, the winding is accurate, and the coil quality is reliable.
Description
Technical Field
The present invention relates to the field of electronic products, and in particular, to a mover structure of a lens driving apparatus, and a camera module.
Background
With the progress of science and technology, the application of camera modules is more and more extensive, and at present, except cameras, mobile phones, computers and other electronic equipment are equipped with camera modules, so that people can take pictures at any time and any place conveniently, and convenience and fun are brought to the life of people. The camera module comprises a Fixed Focus (FF) camera module and an Automatic Focusing (AF) camera module, and in the AF camera module, a lens can be driven to move by a lens driving device (motor) so as to realize focusing. Meanwhile, the current camera module generally has an anti-shake function, and therefore, the lens is also required to be movable.
In order to move the lens, the lens driving device generally includes a stator structure and a mover structure that are movable relative to each other, the mover structure carries the lens, and magnets are disposed on both the mover structure and the stator structure to generate magnetic field force to maintain a proper gap between the stator structure and the mover structure, and the stator structure and the mover structure are restored to an initial state in time after moving relative to each other.
The mover structure generally includes a carrier and coils positioned around the carrier. At present, two fixing modes of a coil and a carrier are provided, one is to sleeve an air-core coil on the carrier, and the other is to directly wind the coil around the carrier. However, the former has complex assembly and low assembly efficiency, and the latter has smaller thrust and can not meet the product requirements.
The foregoing description is provided for general background information and is not admitted to be prior art.
Disclosure of Invention
The invention aims to provide a rotor structure of a lens driving device, the lens driving device and a camera module, wherein the rotor structure is simple and reliable in winding process.
The invention provides a rotor structure of a lens driving device, which comprises a carrier and a coil, wherein the carrier is provided with a first side, a second side, a third side and a fourth side, the first side is opposite to the third side, the second side is opposite to the fourth side, the coil comprises a first coil main body, a second coil main body, an initial lead and a termination lead, the first coil main body and the second coil main body are respectively positioned on the second side and the fourth side, the initial lead is positioned on the first side, the termination lead is positioned on the third side, the first side is provided with a first winding slot for accommodating the initial lead, and/or the third side is provided with a second winding slot for accommodating the termination lead.
Furthermore, the carrier is provided with a first winding post at the starting end of the first winding groove, one end of the starting lead is wound on the first winding post, and the other end of the starting lead is wound on the upper part of the first coil main body; and/or the carrier is provided with a second winding post at the termination end of the second winding groove, one end of the termination lead is wound on the second winding post, and the other end of the termination lead is wound on the upper part of the second coil body.
Furthermore, the first winding post is lower than the upper part of the first coil main body, the first winding groove comprises a first section and a second section which form a certain included angle, and a first protrusion is arranged below the joint of the first section and the second section of the carrier; and/or the second winding post is lower than the upper part of the second coil main body, the second winding groove comprises a third section and a fourth section which form a certain included angle, and a second protrusion is arranged below the joint of the third section and the fourth section of the carrier.
Furthermore, the first section of lower groove wall is an inclined plane which is inclined upwards, and the second section of lower groove wall is a horizontal plane; and/or the third section of lower groove wall is a straight line which is inclined downwards, and the fourth section of lower groove wall is a horizontal plane.
Furthermore, a first coil mounting column used for winding the first coil main body is arranged on the second side of the carrier, and the upper surface of the first coil mounting column is flush with the lower groove wall of the second section; and/or a second coil mounting column used for winding the second coil main body is arranged on the fourth side of the carrier, and the upper surface of the second coil mounting column is flush with the lower groove wall of the fourth section.
Further, the coil further comprises a connecting wire connecting the first coil body and the second coil body, and the connecting wire is accommodated in the second winding slot.
The invention also provides a lens driving device, which comprises a stator structure and a rotor structure, wherein the rotor is of the rotor structure and is accommodated in the stator structure, the stator structure comprises a base and a first magnet and a second magnet which are arranged on two sides of the base, and the first magnet and the second magnet are respectively opposite to the first coil main body and the second coil main body.
The invention also provides a camera module which is characterized by comprising the lens driving device.
The rotor structure of the lens driving device, the lens driving device and the camera module provided by the invention have the advantages that the first coil main body and the second coil main body are arranged on the second side and the fourth side of the carrier, the starting lead and the ending lead are arranged on the first side and the third side, and the first winding groove/the second winding groove for accommodating the starting lead/the ending lead are arranged on the first side/the third side.
Drawings
Fig. 1 is an exploded perspective view of a lens driving device according to an embodiment of the invention.
Fig. 2 is a perspective view of a mover structure of the lens driving apparatus shown in fig. 1 at an angle.
Fig. 3 is a perspective view of another angle of the mover structure shown in fig. 2.
Fig. 4 is a perspective view of a carrier in the mover structure shown in fig. 2.
Fig. 5 is a perspective view of a coil in the mover structure shown in fig. 2.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, in an embodiment of the invention, a lens driving apparatus includes a stator structure (not shown) and a mover structure (not shown).
The stator structure comprises a base structure (not indicated) and a housing 6. The base structure and the housing 6 form a receiving cavity for receiving the mover structure therein. In other embodiments, the housing 6 may not be provided, and the mover structure may be protected in other ways.
The base structure comprises a base 11 and a magnet 12. The base 11 is rectangular frame-shaped, and the middle part forms a containing space with a circular section. The magnets 12 are four magnets, and are respectively arranged on two sides of the base 11.
The mover structure comprises a lower elastic sheet 2, a carrier 3, an upper elastic sheet 4 and a coil 5. The carrier 3 is arranged on the base structure and used for bearing the lens. The coil 5 includes a first coil body 51 and a second coil body 52 fixed to both sides of the carrier 3, respectively, opposite to the magnet 12. The upper elastic sheet 4 and the lower elastic sheet 2 are respectively arranged above and below the carrier 3, so that the rotor structure can move axially relative to the stator structure. By means of the magnetic field force between the coil 5 and the magnet 12, a proper gap is maintained between the stator structure and the mover structure, and the stator structure and the mover structure are timely restored to the initial state after mutual movement. In this embodiment, the coil 5 is a coil for adjusting the magnetic field intensity by adjusting the current, so that the magnetic field of the coil 5 can be respectively adjusted to move the moving sub-structure to a required position, thereby offsetting the influence caused by shaking and playing an optical anti-shaking role. And the upper elastic sheet 4 and the lower elastic sheet 2 can be matched to enable the moving substructure to move along the axial direction so as to play a role in automatic focusing. The mover structure can be driven to move by other modes such as memory alloy, and at the moment, the magnetic field force between the coil 5 and the magnet 12 only needs to keep a proper gap between the stator structure and the mover structure and timely return to the initial state after the mutual movement.
As shown in fig. 2 to 5, in the present embodiment, the carrier 3 is provided with a first side 31, a second side 32, a third side 33, and a fourth side 32, wherein the first side 31 is opposite to the third side 33, and the second side 32 is opposite to the fourth side 34. The coil 5 further includes a start lead 53, a stop lead 54, and a connection wire 55, wherein the start lead 53 is connected to the first coil body 51, the stop lead 54 is connected to the second coil body 52, and the connection wire 55 is connected to the first coil body 51 and the second coil body 52.
The first and second coil bodies 51, 52 are located at the second and fourth sides 32, 34, respectively, the start lead 53 is located at the first side, and the end lead 54 is located at the third side.
The first side 31 is provided with a first winding slot 311 for receiving the start lead 53, and the third side 33 is provided with a second winding slot 331 for receiving the end lead 54. All the leads are limited in the winding grooves, so that winding is facilitated, and the leads can be reliably fixed in the winding grooves. Of course, only the first winding groove or only the second winding groove may be provided according to the requirement.
The carrier 3 is provided with a first winding post 312 at a starting end of the first winding slot 311, and one end of the starting lead 53 is wound around the first winding post 312, and the other end is wound around an upper portion of the first coil body 51. In this embodiment, the first winding post 312 is located at the lower part of the carrier 3 and lower than the upper part of the first coil body 51, so that the winding part of the initial lead 53 is close to the circuit board below the lens driving device, thereby facilitating the circuit connection with the circuit board. First wire winding groove 311 is including being first section 3111 and the second section 3112 of certain contained angle, the cell wall is ascending inclined plane in the slant under first section 3111, the cell wall is the horizontal plane under second section 3112.
The carrier 3 is provided with a first protrusion 313 below the junction of the first section 3111 and the second section 3112 for further supporting the start lead 53 and preventing the start lead 53 from falling out of the first winding slot 311 at the junction of the first section 3111 and the second section 3112.
The carrier 3 is provided with a second winding post 332 at the terminating end of the second winding slot 331, and the terminating lead 54 is wound around the second winding post 332 at one end and around the upper portion of the second coil body 52 at the other end. In this embodiment, the second winding post 332 is located at the lower part of the carrier 3 and lower than the upper part of the second coil body 52, so that the winding part of the terminal lead 54 is close to the circuit board below the lens driving device, thereby facilitating the circuit connection with the circuit board. The second winding groove 331 includes a third section (not labeled) and a fourth section (not labeled) which form a certain included angle, a lower groove wall of the third section is a straight line which is inclined downwards, and a lower groove wall of the fourth section is a horizontal plane.
The carrier 3 is provided with a second protrusion 333 below the junction of the third section and the fourth section to further support the terminating lead 54, so as to prevent the terminating lead 54 from falling out of the second winding slot 331 at the junction of the third section and the fourth section.
The second side 32 of the carrier 3 is provided with a first coil mounting post 321 for winding the first coil body 51, and an upper surface of the first coil mounting post 321 is flush with a lower groove wall of the second segment 3112. The fourth side 34 of the carrier 3 is provided with a second coil mounting pillar 341 for winding the second coil body 52, and an upper surface of the second coil mounting pillar 341 is flush with the lower groove wall of the fourth section. Therefore, the lead wire between the winding groove and the coil mounting post can be horizontally arranged, and the winding is more convenient.
The connection wire 55 is also received in the second winding slot 331.
The embodiment also provides a camera module comprising the lens driving device.
In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the purpose of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A rotor structure of a lens driving device includes a carrier and a coil, wherein the carrier has a first side, a second side, a third side and a fourth side, the first side is opposite to the third side, the second side is opposite to the fourth side, the coil includes a first coil body, a second coil body, a start lead and an end lead, the first coil body and the second coil body are respectively located on the second side and the fourth side, the start lead is located on the first side, the end lead is located on the third side, the first side is provided with a first winding slot for accommodating the start lead, and/or the third side is provided with a second winding slot for accommodating the end lead.
2. The mover structure of the lens driving device as claimed in claim 1, wherein the carrier has a first winding post at a start end of the first winding groove, and the start lead is wound around the first winding post at one end and around an upper portion of the first coil body at the other end; and/or the carrier is provided with a second winding post at the termination end of the second winding groove, one end of the termination lead is wound on the second winding post, and the other end of the termination lead is wound on the upper part of the second coil body.
3. The mover structure of the lens driving device as claimed in claim 2, wherein the first winding post is lower than the upper portion of the first coil body, the first winding groove includes a first section and a second section forming an included angle, and a first protrusion is provided below the carrier at a junction of the first section and the second section; and/or the second winding post is lower than the upper part of the second coil main body, the second winding groove comprises a third section and a fourth section which form a certain included angle, and a second protrusion is arranged below the joint of the third section and the fourth section of the carrier.
4. The mover structure of the lens driving device as claimed in claim 3, wherein the first lower groove wall has an inclined surface inclined upward, and the second lower groove wall has a horizontal surface; and/or the third section of lower groove wall is a straight line which is inclined downwards, and the fourth section of lower groove wall is a horizontal plane.
5. The mover structure of the lens driving device as claimed in claim 4, wherein the second side of the carrier is provided with a first coil mounting post for winding the first coil body, an upper surface of the first coil mounting post being flush with a lower groove wall of the second section; and/or a second coil mounting column used for winding the second coil main body is arranged on the fourth side of the carrier, and the upper surface of the second coil mounting column is flush with the lower groove wall of the fourth section.
6. The mover structure of the lens driving device as claimed in claim 1, wherein the coil further includes a connection line connecting the first coil body and the second coil body, the connection line being received in the second winding groove.
7. A lens driving device, comprising a stator structure and a mover structure, wherein the mover is the mover structure as claimed in any one of claims 1 to 6, and is accommodated in the stator structure, the stator structure comprises a base, and a first magnet and a second magnet disposed on two sides of the base, and the first magnet and the second magnet are respectively opposite to the first coil body and the second coil body.
8. A camera module comprising the lens driving device according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911369819.4A CN111010017A (en) | 2019-12-26 | 2019-12-26 | Active cell structure of lens driving device, lens driving device and camera module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911369819.4A CN111010017A (en) | 2019-12-26 | 2019-12-26 | Active cell structure of lens driving device, lens driving device and camera module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111010017A true CN111010017A (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911369819.4A Pending CN111010017A (en) | 2019-12-26 | 2019-12-26 | Active cell structure of lens driving device, lens driving device and camera module |
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| Country | Link |
|---|---|
| CN (1) | CN111010017A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928889A (en) * | 2021-03-22 | 2021-06-08 | 新思考电机有限公司 | Driving device, camera module and electronic equipment |
| WO2023184970A1 (en) * | 2022-04-01 | 2023-10-05 | 苏州昀冢电子科技股份有限公司 | Base integrated with coil, and motor |
-
2019
- 2019-12-26 CN CN201911369819.4A patent/CN111010017A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928889A (en) * | 2021-03-22 | 2021-06-08 | 新思考电机有限公司 | Driving device, camera module and electronic equipment |
| CN112928889B (en) * | 2021-03-22 | 2022-06-10 | 新思考电机有限公司 | Driving device, camera module and electronic equipment |
| WO2023184970A1 (en) * | 2022-04-01 | 2023-10-05 | 苏州昀冢电子科技股份有限公司 | Base integrated with coil, and motor |
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