CN100501553C - Clipper - Google Patents
Clipper Download PDFInfo
- Publication number
- CN100501553C CN100501553C CNB2005101001110A CN200510100111A CN100501553C CN 100501553 C CN100501553 C CN 100501553C CN B2005101001110 A CNB2005101001110 A CN B2005101001110A CN 200510100111 A CN200510100111 A CN 200510100111A CN 100501553 C CN100501553 C CN 100501553C
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- CN
- China
- Prior art keywords
- holding unit
- electromagnetic coil
- supporting seat
- permanent magnet
- coil assembly
- 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 holding device is prepared as forming drive unit by at least one adjustable electromagnetic element and one permanent magnet, fixing said permanent magnet on support base, using adjustable electromagnetic unit to generate an electric field for forming magnetic force with permanent magnet to drive said support base to move.
Description
[technical field]
The present invention relates to a kind of holding unit, relate in particular to a kind of holding unit in order to the mobile optical element.
[background technology]
Camera head miscellaneous has appearred in the market, such as digital camera, video camera etc.For making these camera heads obtain best image quality, often need be to the processing of focusing of these camera heads.The technical scheme of various focusing operations has appearred in industry, and wherein modal is the focal length that changes camera lens by the position of lens in the dollying device.The method that is used for mobile lens at present mainly contains two kinds: a kind of for hand, and promptly rotate lens and it is advanced in lens barrel or retreat with hand; Another kind is a self-action, comes mobile lens with additional drive unit.
In the prior art, holding unit often adopts motor to order about lens and moves.This holding unit generally comprises a lens mount, a driving section, a motor and a screw rod.Wherein, this driving section links to each other with a side of lens mount; This screw rod is extended by the rotating shaft of motor, and meshes with this driving section.During work, order about screw rod with motor and rotate, so make this driving section and this lens mount screw rod axially on move.
Yet, because screw rod and driving section mesh together, to use for a long time, the wearing and tearing between screw rod and the driving section are more serious, cause the serviceable life of this holding unit shorter.In addition, the precision that moves of the mechanical type that adopts of this kind holding unit is lower.
[summary of the invention]
In view of this, be necessary to provide a holding unit that wearing and tearing are lower and precision is higher.
A kind of holding unit comprises a guide rod, a supporting seat and a drive unit.This drive unit comprises an at least one electromagnetic coil assembly and a permanent magnet.This supporting seat comprises a sliding support, a fixed support and a resettlement section, this sliding support slidably is connected on this guide rod, this fixed support can be fixed this permanent magnet, and an optical element can be fixed in this resettlement section, and this sliding support lays respectively at the relative both sides of this holding seat with this fixed support.This at least one electromagnetic coil assembly can produce a magnetic field, exists magnetive attraction to move to drive this supporting seat between this magnetic field and this permanent magnet.
Compared with prior art, because the magnetic field that above-mentioned holding unit adopts electromagnetic coil assembly to produce applies magneticaction to the permanent magnet on this supporting seat, so that this supporting seat is moved.Again owing to do not contact between this electromagnetic coil assembly and this permanent magnet, so can not produce wearing and tearing, thereby the serviceable life of this holding unit is longer.In addition, compared to prior art, the precision that holding unit control of the present invention is moved is higher.
[description of drawings]
The structural representation of the holding unit that Fig. 1 is disclosed for the present invention's one better embodiment.
Fig. 2 is the position detecting device structural representation that Fig. 1 disclosed.
The principle schematic that Fig. 3 A moves to the first electromagnetic coil assembly direction for holding unit that Fig. 1 disclosed.
The principle schematic that Fig. 3 B moves to the second electromagnetic coil assembly direction for holding unit that Fig. 1 disclosed.
[embodiment]
Please referring to Fig. 1, the holding unit 200 that it is disclosed for the present invention's one better embodiment.This holding unit 200 is used to carry lens 300, and it comprises: a cylinder guide 210, a supporting seat 220, a drive unit 230 and a position detecting device 240.Lens 300 are arranged in the supporting seat 220.Supporting seat 220 is sheathed on the guide rod 210, and can slide along guide rod 210.Drive unit 230 links to each other with supporting seat 220, is used to drive supporting seat 220 and slides along guide rod 210.Position detecting device 240 is used to detect supporting seat 220 present positions.Wherein, lens 300 also can be other optical element.
Supporting seat 220 has a sliding support 222, a fixed support 224 and a resettlement section 226.Resettlement section 226 is the circular frame structure, accommodates fixed lens 300 in wherein.Sliding support 222 and fixed support 224 lay respectively at the relative both sides of resettlement section 226.Sliding support 222 226 radially extends along it from the resettlement section, and has an arcuate end 299.Arcuate end 299 can be sheathed on supporting seat 220 on the guide rod 210 after matching with guide rod 210.Fixed support 224 also from extend on the resettlement section 226 and with 222 be on the same diameter.Fixed support 224 has a circular middle part, and a mounting hole 277 is offered at this middle part.
The extremely adjacent setting of N of first electromagnetic coil assembly 234 and permanet magnet 232, and have one first solenoid 342 and one first iron core 344.The extremely adjacent setting of S of second electromagnetic coil assembly 236 and permanet magnet 232, and have one second solenoid 362 and one second iron core 364.Along on the direction of first electromagnetic coil assembly, 234 to second electromagnetic coil assemblies 236, first solenoid 342 is counterclockwise to be wound on first iron core 344, and have the one first conducting end 342a and the second conducting end 342b, wherein the N utmost point of the contiguous permanet magnet 232 of the second conducting end 342b.Along on the direction of first electromagnetic coil assembly, 234 to second electromagnetic coil assemblies 236, second solenoid 362 is counterclockwise to be wound on second iron core 364, and have the one first conducting end 362a and the second conducting end 362b, wherein the first conducting end 362a is near the S utmost point of permanet magnet 232.First solenoid 342 can also the clockwise direction coiled with above-mentioned second solenoid 362.
Please referring to Fig. 2, flat-plate light source 242 sends a parallel beam 247.Parallel beam 247 forms a light and dark hot spot on photodetector 244 behind grating 246 diffraction.When grating 246 moved, corresponding light and shade takes place this hot spot thereupon changed.Photodetector 244 can detect the cycle that this hot spot light and shade changes, and can obtain the translational speed of grating 246 thus.The distance that grating 246 moves can be obtained by the translational speed of grating 246 is carried out time integral, thereby the position of lens 300 can be known.
Please referring to Fig. 3 A, when needs make lens 300 to guide rod 210 during near the end of first electromagnetic coil assemblies 234, make the first conducting end 342a of first solenoid 342 have high potential, the second conducting end 342b of first solenoid 342 is had than low potential.At this moment, first electromagnetic coil assembly 234 will produce a magnetic field, and the S utmost point in this magnetic field is positioned at the lower end of first electromagnetic coil assembly 234, and the N utmost point of permanet magnet 232 is produced attractive force.Make the first conducting end 362a of second solenoid 362 have high potential, the second conducting end 362b of second solenoid 362 is had than low potential.At this moment, second electromagnetic coil assembly 236 will produce a magnetic field, and the S utmost point in this magnetic field is positioned at the upper end of second electromagnetic coil assembly 236, and the S utmost point of permanet magnet 232 is produced repulsive force.So, drive whole supporting seat 220 by the acting force between permanet magnet 232 and first, second electromagnetic coil assembly 234 and move.Situation of movement by the detection supporting seat 220 of position detecting device 240.
When near the target location, translational speed and the distance between supporting seat 220 and target location with current supporting seat 220 are foundation, the size of the voltage that adjustment applies first solenoid 342 and second solenoid 362, change the size and the direction in first electromagnetic coil assembly 234 and second electromagnetic coil assembly, 236 generation magnetic fields, thereby supporting seat 220 is slowed down, and make supporting seat 220 can accurately stay in the target location.
Please referring to Fig. 3 B, when needs make lens 230 when the direction of second electromagnetic coil assembly 236 moves, first solenoid 342 liang of conducting end 342a, 342b are applied voltage so that first electromagnetic coil assembly 234 produces a magnetic field, the N utmost point in this magnetic field is positioned at the lower end of first electromagnetic coil assembly 234, and the N utmost point of permanet magnet 232 is produced repulsive force.Second solenoid 362 liang of conducting end 362a, 362b are applied voltage so that second electromagnetic coil assembly 236 produces a magnetic field, and the N utmost point in this magnetic field is positioned at the upper end of second electromagnetic coil assembly 236, and the S utmost point of permanet magnet 232 is produced attractive force.So permanet magnet 232 will move to the direction of second electromagnetic coil assembly 236, and then drive whole supporting seat 220 and move.By the situation of movement of the detection supporting seat 220 of position detecting device 240, put on the voltage swing at 342a, 342b two ends and 362a, 362b two ends with decision.
Therefore, holding unit 200 is applied to voltage on first solenoid 342 and second solenoid 362 by control, to determine the magnetic direction of first electromagnetic coil assembly 234 and second electromagnetic coil assembly 236, move thereby order about permanet magnet 232, and then drive the supporting seat 220 carry lens 300 and move.Owing to do not contact between first electromagnetic coil assembly 234 and second electromagnetic coil assembly 236 and the permanet magnet 232, so can not produce wearing and tearing.
Claims (8)
1. holding unit, comprise: a supporting seat and a drive unit, it is characterized in that: this holding unit also comprises a guide rod, this drive unit comprises an at least one electromagnetic coil assembly and a permanent magnet, this supporting seat comprises a sliding support, a fixed support and a resettlement section, this sliding support slidably is connected on this guide rod, this fixed support can be fixed this permanent magnet, an optical element can be fixed in this resettlement section, and this sliding support lays respectively at the relative both sides of this holding seat with this fixed support.This at least one electromagnetic coil assembly can produce a magnetic field, exists magnetive attraction to move to drive this supporting seat between this magnetic field and this permanent magnet.
2. holding unit as claimed in claim 1 is characterized in that: the quantity of this at least one electromagnetic coil assembly is two, and these two electromagnetic coil assemblies are respectively over against the two poles of the earth of this permanent magnet.
3. holding unit as claimed in claim 2, it is characterized in that: these two electromagnetic coil assemblies comprise a solenoid and an iron core respectively, this solenoid is wrapped on this iron core, and the winding direction of two solenoids of these two electromagnetic coil assemblies on these two iron cores is identical.
4. holding unit as claimed in claim 1 is characterized in that: the pole orientation of this permanent magnet is consistent with the guiding direction of this guide rod.
5. holding unit as claimed in claim 1 is characterized in that: this support bracket fastened middle part offers a mounting hole, and this permanent magnet is mounted in this mounting hole.
6. holding unit as claimed in claim 1 is characterized in that: this holding unit comprises that further a position detecting device is to detect the residing position of this supporting seat.
7. holding unit as claimed in claim 6 is characterized in that: this position detecting device comprises a light source, a photodetector and a grating, and this grating is fixed on this supporting seat, and this light source and this photodetector are positioned at the both sides of this grating.
8. holding unit as claimed in claim 7 is characterized in that: this light source, this photodetector are positioned on the same optical axis, and the direction that moves perpendicular to this grating of this optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101001110A CN100501553C (en) | 2005-09-30 | 2005-09-30 | Clipper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101001110A CN100501553C (en) | 2005-09-30 | 2005-09-30 | Clipper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1940693A CN1940693A (en) | 2007-04-04 |
| CN100501553C true CN100501553C (en) | 2009-06-17 |
Family
ID=37958998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101001110A Expired - Fee Related CN100501553C (en) | 2005-09-30 | 2005-09-30 | Clipper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100501553C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6662102B2 (en) * | 2016-02-29 | 2020-03-11 | 富士ゼロックス株式会社 | Optical device manufacturing method, substrate device, optical device, and optical device manufacturing device |
| CN109663688B (en) * | 2019-02-15 | 2020-11-24 | 安徽诚意电气科技有限公司 | Electromechanical fan blade paint spraying device provided with cover type structure |
| CN112061426B (en) * | 2020-07-16 | 2021-10-15 | 南京航空航天大学 | Structure of permanent magnetic suspension type space camera |
| CN114114602B (en) * | 2021-12-07 | 2024-03-26 | 新思考电机有限公司 | Lens driving device and image pickup device |
| CN114137687B (en) * | 2021-12-14 | 2024-03-29 | 新思考电机有限公司 | Lens driving device and image pickup device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153079C (en) * | 1997-02-10 | 2004-06-09 | 松下电器产业株式会社 | Straight line movement promoting device and optical equipment using it |
| CN2682449Y (en) * | 2003-12-30 | 2005-03-02 | 尚品铭板股份有限公司 | Filter driving structure for photographic lens |
| CN2682447Y (en) * | 2003-12-15 | 2005-03-02 | 夏雪娇 | Infrared filter automatic starter of camera |
| JP2005150412A (en) * | 2003-11-17 | 2005-06-09 | Fuji Electric Fa Components & Systems Co Ltd | Electromagnet apparatus and electromagnetic contactor |
-
2005
- 2005-09-30 CN CNB2005101001110A patent/CN100501553C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153079C (en) * | 1997-02-10 | 2004-06-09 | 松下电器产业株式会社 | Straight line movement promoting device and optical equipment using it |
| JP2005150412A (en) * | 2003-11-17 | 2005-06-09 | Fuji Electric Fa Components & Systems Co Ltd | Electromagnet apparatus and electromagnetic contactor |
| CN2682447Y (en) * | 2003-12-15 | 2005-03-02 | 夏雪娇 | Infrared filter automatic starter of camera |
| CN2682449Y (en) * | 2003-12-30 | 2005-03-02 | 尚品铭板股份有限公司 | Filter driving structure for photographic lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1940693A (en) | 2007-04-04 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20150930 |
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| EXPY | Termination of patent right or utility model |