CN207164340U - A kind of closed loop focusing motor - Google Patents
A kind of closed loop focusing motor Download PDFInfo
- Publication number
- CN207164340U CN207164340U CN201721249938.2U CN201721249938U CN207164340U CN 207164340 U CN207164340 U CN 207164340U CN 201721249938 U CN201721249938 U CN 201721249938U CN 207164340 U CN207164340 U CN 207164340U
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- China
- Prior art keywords
- base
- closed loop
- carrier
- memorial alloy
- focusing motor
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Abstract
The utility model discloses a kind of closed loop focusing motor, including base and the carrier being arranged on the base, set between the base and carrier and be connected with some memorial alloy posts, driving IC and Hall element group are provided with the base, the driving IC is respectively electrically connected to some memorial alloy posts and Hall element group, and hall magnet group is provided with the carrier.Using memorial alloy post, as focusing drive mechanism, in focus process, also with closed loop feedback function, performance of more accurately focusing can be achieved in the closed loop focusing motor.
Description
Technical field
It the utility model is related to micro machine field, more particularly to a kind of closed loop focusing motor.
Background technology
At present conventional mobile phone camera module auto-focusing mainly by VCM (Voice coil motor voice coil motors) come
Realize, but because VCM motor is complicated, volume is relatively large, while power consumption is larger, easily heating, restricts to a certain extent
The development of whole industry, is unfavorable for current electronic product subminaturization and the development trend of low-power consumption.
With the development of technology, start to occur the memorial alloy VCM by the use of memorial alloy as focusing drive mechanism, but
It is that memorial alloy VCM does not have closed loop feedback function in focus process, the higher focusing performance of precision can not be realized.
Utility model content
In order to solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of closed loop focusing motor, and it uses memory
Alloy column in focus process, also with closed loop feedback function, can be achieved more accurately focusability as focusing drive mechanism
Energy.
Technical problem to be solved in the utility model is achieved by the following technical programs：
A kind of closed loop focusing motor, including base and the carrier that is arranged on the base, between the base and carrier
Setting is connected with some memorial alloy posts, and driving IC and Hall element group are provided with the base, and the driving IC is electric respectively
Some memorial alloy posts and Hall element group are connected to, hall magnet group is provided with the carrier.
Further, integration makes and has the first stereo circuit on the base, and integration, which makes, on the carrier the
Two stereo circuits, some memorial alloy posts form conducting loop by first stereo circuit and the second stereo circuit；
The driving IC is respectively electrically connected to some memorial alloy posts and Hall element group by first stereo circuit.
Further, the memorial alloy post has four, is arranged in 90 ° of isogonism biasings between the base and carrier
On edge.
Further, the Hall element group includes two Hall elements, is relatively separately positioned on the two of the base
On side.
Further, the hall magnet group includes two hall magnets, is relatively separately positioned on the two of the carrier
On side.
Further, it is provided with shell fragment on the one end of the carrier away from the base.
Further, in addition to the shell that is set on the base.
The utility model has the advantages that：Driving IC, Hall element group and the Hall magnetic of the closed loop focusing motor
Stone group forms closed loop feedback mechanism in focus process, and the Hall element group is used to sense caused by the hall magnet group
Hall magnetic field, to obtain position of the carrier in focus process, and position signalling is transmitted to the driving IC, the drive
Dynamic IC is passed through electric current according to position signalling to the memorial alloy post, realizes closed loop feedback function, can reach more accurately
Focusing performance.
Brief description of the drawings
Fig. 1 is the exploded view of closed loop focusing motor provided by the utility model.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of closed loop focusing motor, including base 1 and the carrier 2 being arranged on the base 1, the bottom
Set between seat 1 and carrier 2 and be connected with some memorial alloy posts 3, driving IC 6 and Hall element group are provided with the base 1
5, the driving IC 6 is respectively electrically connected to some memorial alloy posts 3 and Hall element group 5, is provided with the carrier 2
Hall magnet group 4.
Some memorial alloy posts 3 are connected between the base 1 and carrier 2 of the closed loop focusing motor, using memorial alloy post 3
As focusing drive mechanism, the memorial alloy post 3 can produce deformation after being powered, and deformation quantity is with the change of voltage/current
And it is different, the carrier 2 can be driven to move in the direction of the optical axis, realize focus function；Also, the driving IC 6, Hall member
Part group 5 and hall magnet group 4 form closed loop feedback mechanism in focus process, the Hall element group 5 be used to sensing it is described suddenly
Hall magnetic field caused by your magnetite group 4, to obtain position of the carrier 2 in focus process, and position signalling is transmitted
Electric current is passed through to the memorial alloy post 3 according to position signalling, realizes that closed loop is anti-to the driving IC 6, the driving IC 6
Function is presented, can reach performance of more accurately focusing.
Integration, which makes, on the base 1 the first stereo circuit, and integration, which makes, on the carrier 2 the second three-dimensional line
Road, some memorial alloy posts 3 form conducting loop by first stereo circuit and the second stereo circuit；The driving
IC 6 is respectively electrically connected to some memorial alloy posts 3 and Hall element group 5 by first stereo circuit.
First stereo circuit includes main body circuit and terminal circuit, wherein, the main body circuit is used for the driving
Electrical connection between IC 6 and Hall element group 5, the driving IC 6 and some memorial alloy posts 3 and each memorial alloy post 3,
The electrical connection that the terminal circuit is used between driving IC 6 and the wiring board of camera module；The edge note of the base 1
Plastic contact 11 formed with integration during modeling, the terminal circuit are produced on the plastic contact 11.
In the present embodiment, in order to reduce the quantity of the plastic contact 11 and simplify the first line and the second circuit
Wiring, pass through the first line and the second circuit stroke series relationship, the driving between some memorial alloy posts 3
IC 6 controls the electric current and deformation quantity of all memorial alloy posts 3 simultaneously.
The memorial alloy post 3 has four, the edge being arranged in 90 ° of isogonism biasings between the base 1 and carrier 2
On.
The Hall element group 5 includes two Hall elements, is relatively separately positioned on the both sides of the base 1；Institute
Stating hall magnet group 4 includes two hall magnets, is relatively separately positioned on the both sides of the carrier 2.The Hall element
Position between hall magnet is corresponding.
The carrier 2 is provided with shell fragment 7 on one end away from the base 1, is hung down for limiting the carrier 2 with optical axis
Relative motion in straight plane, control the angle of inclination of the carrier 2.
The closed loop focusing motor also includes the shell 8 being set on the base 1.
Embodiment described above only expresses embodiment of the present utility model, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the utility model patent scope can not be interpreted as, as long as using equivalent substitution or the form of equivalent transformation institute
The technical scheme of acquisition, it all should fall within the scope of protection of the utility model.
Claims (7)
1. a kind of closed loop focusing motor, including base and the carrier being arranged on the base, set between the base and carrier
Put and be connected with some memorial alloy posts, it is characterised in that：Driving IC and Hall element group, the driving are provided with the base
IC is respectively electrically connected to some memorial alloy posts and Hall element group, and hall magnet group is provided with the carrier.
2. closed loop focusing motor according to claim 1, it is characterised in that：Integration, which makes, on the base has first to stand
Body circuit, integration, which makes, on the carrier the second stereo circuit, and it is three-dimensional that some memorial alloy posts pass through described first
Circuit and the second stereo circuit form conducting loop；The driving IC is respectively electrically connected to described by first stereo circuit
Some memorial alloy posts and Hall element group.
3. closed loop focusing motor according to claim 1 or 2, it is characterised in that：The memorial alloy post has four, is in
90 ° of isogonism biasings are arranged on the edge between the base and carrier.
4. closed loop focusing motor according to claim 1 or 2, it is characterised in that：The Hall element group includes two suddenly
That element, is relatively separately positioned on the both sides of the base.
5. closed loop focusing motor according to claim 1 or 2, it is characterised in that：The hall magnet group includes two suddenly
That magnetite, is relatively separately positioned on the both sides of the carrier.
6. closed loop focusing motor according to claim 1 or 2, it is characterised in that：The carrier away from the base one
Shell fragment is provided with end.
7. closed loop focusing motor according to claim 1 or 2, it is characterised in that：Also include being set on the base
Shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721249938.2U CN207164340U (en) | 2017-09-27 | 2017-09-27 | A kind of closed loop focusing motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721249938.2U CN207164340U (en) | 2017-09-27 | 2017-09-27 | A kind of closed loop focusing motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207164340U true CN207164340U (en) | 2018-03-30 |
Family
ID=61724249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721249938.2U Active CN207164340U (en) | 2017-09-27 | 2017-09-27 | A kind of closed loop focusing motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207164340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471236A (en) * | 2018-05-11 | 2019-11-19 | 台湾东电化股份有限公司 | Optical element driving mechanism |
-
2017
- 2017-09-27 CN CN201721249938.2U patent/CN207164340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471236A (en) * | 2018-05-11 | 2019-11-19 | 台湾东电化股份有限公司 | Optical element driving mechanism |
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