CN210401813U - Lens driving device, camera module and electronic equipment - Google Patents
Lens driving device, camera module and electronic equipment Download PDFInfo
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- CN210401813U CN210401813U CN201921730061.8U CN201921730061U CN210401813U CN 210401813 U CN210401813 U CN 210401813U CN 201921730061 U CN201921730061 U CN 201921730061U CN 210401813 U CN210401813 U CN 210401813U
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- carrier
- base
- sma wire
- lens driving
- magnetizer
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Abstract
A lens driving device includes a base; the carrier is used for carrying the lens, is movably accommodated in the base and can move longitudinally relative to the base; the SMA wire is positioned on one side of the carrier and drives the carrier to move longitudinally through deformation after being electrified; the base is close to the lateral wall of SMA wire is equipped with the magnetizer, the carrier is being close to the lateral wall of SMA wire corresponds the magnetizer is equipped with magnet, the least significant end of magnet is higher than the least significant end of magnetizer. The utility model discloses still disclose a camera module and electronic equipment including above-mentioned camera lens drive arrangement. The utility model discloses a set up the SMA line and be located the SMA line carrier one side, and set up corresponding magnetizer, magnet on base, the carrier respectively, just the lower extreme of magnet is higher than the lower extreme of magnetizer, this kind of camera lens drive arrangement simple structure, occupation space is little, and the reliability is high.
Description
Technical Field
The utility model relates to an imaging technology field especially relates to a camera lens drive arrangement, camera module and electronic equipment.
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.
The lens driving device mainly comprises a carrier and a base, wherein the carrier is used for carrying the lens, and the base is used for limiting the carrier and is welded and fixed on the circuit board. The carrier is movably accommodated in the base and can move relative to the base along the longitudinal direction. In addition, the carrier is driven to move longitudinally through elements such as a coil and a spring, so that the lens is driven to move to realize focusing. At present, the structure parts for driving the carrier to move are more, the processing and the assembly are complex, and the reliability is low.
The foregoing description is provided for general background information and is not admitted to be prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure's camera lens drive arrangement, camera module and electronic equipment.
The utility model provides a lens driving device, include:
a base;
the carrier is used for carrying the lens, is movably accommodated in the base and can move longitudinally relative to the base;
the SMA wire is positioned on one side of the carrier and drives the carrier to move longitudinally through deformation after being electrified;
the base is close to the lateral wall of SMA wire is equipped with the magnetizer, the carrier is being close to the lateral wall of SMA wire corresponds the magnetizer is equipped with magnet, the least significant end of magnet is higher than the least significant end of magnetizer.
Further, still include two mountings, the mounting is fixed in SMA wire both ends, the carrier is equipped with the protruding portion, SMA wire butt in the protruding portion bottom.
Furthermore, the two fixing pieces are made of conductive materials, and the bottom ends of the two fixing pieces extend out of the bottom of the base to be welded with the circuit board so as to supply power to the SMA wire.
Furthermore, the two fixing pieces are sheet bodies, and the top ends of the two fixing pieces are folded and clamped with the SMA wire.
Furthermore, the protruding part is located in the middle of the side wall of the carrier, and the magnet is embedded in one side of the side wall of the carrier.
Furthermore, two rows of balls are arranged between the base and the carrier and on one side close to the SMA wire.
Furthermore, the device also comprises a metal shell, wherein the metal shell is covered on the carrier and is fixed with the base.
The utility model also provides a camera module, including foretell camera lens drive arrangement.
The utility model also provides an electronic equipment, including foretell camera module.
The utility model provides a camera lens drive arrangement, camera module and electronic equipment just are located the SMA line through setting up the SMA line carrier one side drives through warping after the circular telegram carrier longitudinal motion realizes focusing, and this kind of carrier drive simple structure, occupation space is little, and the reliability is high. And corresponding magnetizers and magnets are respectively arranged on the base and the carrier, and the lowest end of each magnet is higher than the lowest end of each magnetizer, so that the carrier has a downward oblique force on the SMA wire to form an initial jacking force and can be reset in time, complex structures such as springs are avoided, and the device is simple in structure, convenient to assemble and reliable in performance.
Drawings
Fig. 1 is an exploded perspective view of a lens driving device and a lens according to an embodiment of the present invention.
Fig. 2 is a perspective assembly view of the lens driving device and the lens shown in fig. 1.
Fig. 3 is a perspective cross-sectional view of the lens driving apparatus and the lens shown in fig. 1.
Fig. 4 is a perspective view of the lens driving apparatus shown in fig. 1 with the metal casing removed and the lens assembled.
Fig. 5 is a perspective assembly view of the carrier, the SMA wire, the fixing member, and the lens in the lens driving apparatus shown in fig. 1.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to 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.
As shown in fig. 1 to 5, in the present embodiment, the lens driving apparatus includes a base 1, a carrier 2, an SMA (shape memory alloy) wire 3, a metal shell 4, and two fixing members 7.
The carrier 2 is used for carrying the lens 5, is movably accommodated in the base 1 and can move longitudinally relative to the base 1. In this embodiment, two rows of balls 6 are disposed between the base 1 and the carrier 2 on a side close to the SMA wire 3, so that the relative movement between the base 1 and the carrier 2 is smoother. The metal shell 4 is covered on the carrier 2 and fixed with the base 1 to limit and protect the carrier 2.
The SMA wire 3 is positioned on one side of the carrier 2, and after being electrified, the SMA wire drives the carrier 2 to move longitudinally through deformation, so as to drive the lens 5 to move, and focusing is realized.
The fixing part 7 is a sheet body made of a conductive material, is fixed on the base 1, is folded at the top end and clamps the SMA wire 3 therein, and extends out of the bottom of the base 1 at the bottom end for being welded with a circuit board (not shown) to electrify the SMA wire 3. The top end clamp is simple in structure and convenient to operate. The bottom end is used for welding with the circuit board and providing power for the SMA wire, so that the fixing piece can be used as a conductive terminal at the same time, and the SMA wire is not required to be provided with power by an additional conductive terminal. Of course, in other embodiments, the fixing element and the conductive element may be separately disposed to provide fixing and conductive functions, respectively, according to the requirement.
As shown in fig. 3 and 5, in the present embodiment, the SMA wire 3 is fixed by clamping two ends of the SMA wire 3 by two fixing members 7, and the middle portion of the carrier 2 protrudes toward the SMA wire 3 to form a protrusion 21, and the middle portion of the SMA wire 3 abuts against the bottom end of the protrusion 21, so that when the SMA wire 3 shortens after being energized, an upward pushing force is generated on the carrier 2, and the carrier 2 moves longitudinally. In addition, in the embodiment, the carrier 2 has a downward force on the SMA wire 3, so that in the initial state, an initial pressing force for abutting the SMA wire 3 against the carrier 2 is formed, and when the SMA wire 3 is elongated, the carrier 2 can move downward and return to the original position in time. The initial jacking pressure is formed by a magnetizer 11 on the base 1 and a magnet 22 on the carrier 2 together, the magnetizer 11 is arranged on the outer side wall of the base 1 close to the SMA wire 3, the magnet 22 is arranged on the side wall of the carrier 2 close to the SMA wire 3, the magnetizer 11 and the magnet 22 are arranged oppositely, and the lowest end of the magnet 22 is higher than the lowest end of the magnetizer 11, so that the carrier 2 generates a downward movement trend through the attraction between the magnetizer 11 and the magnet 22, and downward initial jacking pressure is formed on the SMA wire 3. The magnetizer 11 covers substantially the entire outer side wall of the base 1, and the magnet 22 is embedded in one side of the side wall of the carrier 2 to avoid the protrusion 21.
In this embodiment, the two fixing members 7 are made of conductive material, and the present invention further provides an embodiment of a camera module, including the lens driving device.
The utility model also provides an embodiment of electronic equipment, including foretell camera module.
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 sake 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 protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A lens driving apparatus, comprising:
a base;
the carrier is used for carrying the lens, is movably accommodated in the base and can move longitudinally relative to the base;
the SMA wire is positioned on one side of the carrier and drives the carrier to move longitudinally through deformation after being electrified;
the base is close to the lateral wall of SMA wire is equipped with the magnetizer, the carrier is being close to the lateral wall of SMA wire corresponds the magnetizer is equipped with magnet, the least significant end of magnet is higher than the least significant end of magnetizer.
2. The lens driving apparatus as claimed in claim 1, further comprising two fixing members fixing both ends of the SMA wire, wherein the carrier is provided with a protrusion, and the SMA wire abuts against a bottom end of the protrusion.
3. A lens driving device as claimed in claim 2, wherein the two fixing members are made of conductive material, and the bottom ends thereof extend out of the bottom of the base for being soldered to a circuit board for supplying power to the SMA wires.
4. The lens driving device as claimed in claim 2, wherein the two fixing members are sheet bodies, the top ends of which are folded and sandwich the SMA wire therein.
5. The lens driving apparatus as claimed in claim 2, wherein the protrusion is located at a middle portion of the side wall of the carrier, and the magnet is embedded at one side of the side wall of the carrier.
6. A lens driving apparatus according to claim 1, wherein two rows of balls are provided between the base and the carrier on a side close to the SMA wire.
7. A lens driving apparatus according to claim 1, further comprising a metal casing which is provided on the carrier and fixed to the base.
8. A camera module comprising the lens driving device according to any one of claims 1 to 7.
9. An electronic device comprising the camera module of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921730061.8U CN210401813U (en) | 2019-10-15 | 2019-10-15 | Lens driving device, camera module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921730061.8U CN210401813U (en) | 2019-10-15 | 2019-10-15 | Lens driving device, camera module and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210401813U true CN210401813U (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921730061.8U Active CN210401813U (en) | 2019-10-15 | 2019-10-15 | Lens driving device, camera module and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210401813U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089649A1 (en) * | 2020-11-02 | 2022-05-05 | 阿尔卑斯阿尔派株式会社 | Lens driving apparatus and camera module |
| WO2023238463A1 (en) * | 2022-06-10 | 2023-12-14 | アルプスアルパイン株式会社 | Optical component drive device and camera module |
-
2019
- 2019-10-15 CN CN201921730061.8U patent/CN210401813U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089649A1 (en) * | 2020-11-02 | 2022-05-05 | 阿尔卑斯阿尔派株式会社 | Lens driving apparatus and camera module |
| CN114460788A (en) * | 2020-11-02 | 2022-05-10 | 阿尔卑斯阿尔派株式会社 | Lens driving device and camera module |
| WO2023238463A1 (en) * | 2022-06-10 | 2023-12-14 | アルプスアルパイン株式会社 | Optical component drive device and camera module |
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