CN204795309U - Automatic focus structure - Google Patents
Automatic focus structure Download PDFInfo
- Publication number
- CN204795309U CN204795309U CN201520531085.6U CN201520531085U CN204795309U CN 204795309 U CN204795309 U CN 204795309U CN 201520531085 U CN201520531085 U CN 201520531085U CN 204795309 U CN204795309 U CN 204795309U
- Authority
- CN
- China
- Prior art keywords
- base
- gear
- automatic focus
- sliding seat
- focus structure
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Automatic Focus Adjustment (AREA)
- Lens Barrels (AREA)
Abstract
The utility model provides an automatic focus structure, when needs focus on the camera, through one of them gear revolve of driving motor drive, thereby this pivoted gear drive is the antiport rather than the engaged with gear, and simultaneously, the rack that two gears that are the antiport drove rather than the looks homonymy is the orthokinetic, thereby the sliding plate drives the CCD board that has image sensor and removes, in order to realize automatic focusing, because rack and pinion transmission precision is high, so that the transmission is stable, and need not to use gear motor, therefore, the focus of camera is fast, focusing accuracy is high, and low in energy consumption, the auto focus simple structure of this kind of camera, low cost, it is convenient to maintain.
Description
Technical field
The utility model aims to provide a kind of automatic focus structure for video camera.
Background technology
Nowadays society, the application of video camera is more and more wider, therefore, require more and more higher to the operating efficiency of video camera, especially the focusing function of video camera, current camera focus realizes by lens moving focusing lens, and because camera lens volume is large, weight is large, therefore, in lens moving process, inertia is large, for avoiding camera lens in moving process because inertia cannot stop in desired location greatly, DC speed-reducing need be adopted to drive, but, lens moving speed after slowing down, then focusing speed can be caused slow, and energy consumption is high.
Utility model content
The utility model aims to provide that a kind of focusing speed is fast, precision is high and the automatic focus structure that energy consumption is low.
A kind of automatic focus structure described in the utility model, comprise base, both sides along base length direction are respectively arranged with guide rod, the sliding seat of band rectangular through holes is provided with above base, bottom sliding seat, two ends are respectively arranged with the gathering sill matched with corresponding sides guide rod, one end is along its length provided with fixed head to sliding seat, fixed head is provided with the CCD plate of band imageing sensor, the both sides apparent surface of the rectangular through holes on sliding seat is respectively arranged with tooth bar, rectangular through holes place is provided with two gears be meshed, the wheel and rack of homonymy is meshed, described base is also provided with vertical fixed axis, fixed axis is connected with one of them gear that can rotate to it, can the respect thereto rotating shaft of rotating by bottom base 1 through base, its top and another gear connect firmly, its underpart is connected firmly by the output shaft of the drive motors that shaft coupling and drive shaft are rotated.
A kind of automatic focus structure described in the utility model, when needs focus on video camera, one of them pinion rotation is driven by drive motors, thus the gear that the gear drive of this rotation is meshed with it is in rotating backward, simultaneously, two is that the tooth bar of counter-rotational gear driven and its same side is in moving in the same way, thus sliding panel drives the CCD plate with imageing sensor to move, to realize automatic focus, because rack pinion precision is high, stable drive, and without the need to using reducing motor, therefore, the focusing speed of video camera is fast, focusing accuracy is high, and energy consumption is low, the auto-focus structure of this kind of video camera is simple, cost is low, it is convenient to safeguard.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
A kind of automatic focus structure, as shown in Figure 1, comprise base 1, both sides along base 1 length direction are respectively arranged with guide rod 2, the sliding seat 4 of band rectangular through holes 3 is provided with above base 1, bottom sliding seat 4, two ends are respectively arranged with the gathering sill matched with corresponding sides guide rod 2, one end is along its length provided with fixed head 5 to sliding seat 4, fixed head 5 is provided with the CCD plate 6 of band imageing sensor, the both sides apparent surface of the rectangular through holes 3 on sliding seat 4 is respectively arranged with tooth bar 7, rectangular through holes 3 place is provided with two gears be meshed 8, the gear 8 of homonymy is meshed with tooth bar 7, described base 1 is also provided with vertical fixed axis 11, fixed axis 11 is connected with one of them gear 8 that can rotate to it, can respect thereto 1 rotating shaft 9 of rotating by bottom base 1 through base 1, its top and another gear 8 connect firmly, its underpart is connected firmly by the output shaft of the drive motors 10 that shaft coupling 12 and drive shaft 9 are rotated.
Described drive motors 10 is servomotor, and moved forward and backward to drive sliding seat 4 by servomotor rotating, servomotor operating efficiency is high, and control precision is high.
Rotating shaft 9 is connected with base 1 by rolling bearing, thus rotating shaft 9 can be rotated by respect thereto 1, reduces frictional force therebetween, avoids the two relative motion and weares and teares.
Described gathering sill diameter and guide rod 2 equal diameters, the two coordinates more tight, makes sliding seat 4 precision of sliding higher.
Claims (4)
1. an automatic focus structure, comprise base (1), it is characterized in that: the both sides along base (1) length direction are respectively arranged with guide rod (2), base (1) top is provided with the sliding seat (4) of band rectangular through holes (3), two ends, sliding seat (4) bottom are respectively arranged with the gathering sill matched with corresponding sides guide rod (2), one end is along its length provided with fixed head (5) to sliding seat (4), fixed head (5) is provided with the CCD plate (6) of band imageing sensor, the both sides apparent surface of the rectangular through holes (3) on sliding seat (4) is respectively arranged with tooth bar (7), rectangular through holes (3) place is provided with two gears be meshed (8), the gear (8) of homonymy is meshed with tooth bar (7), described base (1) is also provided with vertical fixed axis (11), fixed axis (11) is connected with one of them gear (8) that can rotate to it, can respect thereto (1) rotating shaft (9) of rotating by base (1) bottom through base (1), its top and another gear (8) connect firmly, its underpart is connected firmly by the output shaft of the drive motors (10) that shaft coupling (12) and drive shaft (9) are rotated.
2. a kind of automatic focus structure according to claim 1, is characterized in that: described drive motors (10) is servomotor.
3. a kind of automatic focus structure according to claim 1, is characterized in that: rotating shaft (9) is connected with base (1) by rolling bearing.
4. a kind of automatic focus structure according to claim 1, is characterized in that: described gathering sill diameter and guide rod (2) equal diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520531085.6U CN204795309U (en) | 2015-07-21 | 2015-07-21 | Automatic focus structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520531085.6U CN204795309U (en) | 2015-07-21 | 2015-07-21 | Automatic focus structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204795309U true CN204795309U (en) | 2015-11-18 |
Family
ID=54535275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520531085.6U Withdrawn - After Issue CN204795309U (en) | 2015-07-21 | 2015-07-21 | Automatic focus structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204795309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994268A (en) * | 2015-07-21 | 2015-10-21 | 广州众源网络科技有限公司 | Automatic focusing structure |
-
2015
- 2015-07-21 CN CN201520531085.6U patent/CN204795309U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994268A (en) * | 2015-07-21 | 2015-10-21 | 广州众源网络科技有限公司 | Automatic focusing structure |
| CN104994268B (en) * | 2015-07-21 | 2018-05-15 | 广州众源网络科技有限公司 | A kind of automatic focusing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104238093A (en) | Zoom lens and focusing mechanism of optical instrument | |
| CN105465304A (en) | Reciprocating running speed and displacement amplifying mechanism and method | |
| CN204795309U (en) | Automatic focus structure | |
| CN202502341U (en) | Lens focusing structure of micro projector | |
| CN100516707C (en) | Solar energy tracking and driving system | |
| CN104994268A (en) | Automatic focusing structure | |
| CN204344844U (en) | A kind of ultralong-stroke screw-drive mechanism | |
| CN203020506U (en) | Side-hanging type gearbox of electric motorcycle | |
| CN103784142B (en) | A kind of magnetic resonance sick bed driving device | |
| CN202870452U (en) | Sprocket driving type telescopic shooting rocker arm | |
| CN104633095B (en) | A kind of speed adjusting gear of pulse-type continuously variable transmission | |
| CN203516635U (en) | Gear shaping transmission mechanism adopting piezoelectric linear motors | |
| CN103934478B (en) | A kind of diaxon driving method of main shaft and diaxon driving mechanism | |
| CN202555918U (en) | Power head of automatic tapping machine | |
| CN102562996B (en) | Double-side complementary type mechanical power saver | |
| CN203604590U (en) | Single-motor-driven double-stroke structure | |
| CN112512270A (en) | Intelligent education recorded broadcast device | |
| CN101922538A (en) | Gear type automatic commutator | |
| CN205555708U (en) | Bar copper coiling mechanism with motor speed control function | |
| CN202453573U (en) | Improved lens focusing structure for projector | |
| CN204440810U (en) | Oval mechanical drive demonstration teaching aid is drawn in lead screw gear transmission automatically | |
| CN203082154U (en) | Multistation output mechanism | |
| CN202586708U (en) | Lifting device | |
| CN103624426A (en) | Driving mechanism for driving roller of roller carrier | |
| CN203541937U (en) | Driving mechanism of roller carrier driving roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20180515 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20180515 |