CN107167994A - A kind of projecting apparatus contrast adjustment mechanism - Google Patents
A kind of projecting apparatus contrast adjustment mechanism Download PDFInfo
- Publication number
- CN107167994A CN107167994A CN201710546744.7A CN201710546744A CN107167994A CN 107167994 A CN107167994 A CN 107167994A CN 201710546744 A CN201710546744 A CN 201710546744A CN 107167994 A CN107167994 A CN 107167994A
- Authority
- CN
- China
- Prior art keywords
- light barrier
- central shaft
- spill spin
- substrate
- spin block
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 10
- 230000004888 barrier function Effects 0.000 claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 32
- 230000013011 mating Effects 0.000 claims description 2
- 241000237858 Gastropoda Species 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of projecting apparatus contrast adjustment mechanism, including substrate, the first light barrier, the second light barrier and motor, the bottom of first light barrier and the second light barrier is respectively equipped with the first light barrier central shaft and the second light barrier central shaft, and the shaft hole matching that the first light barrier central shaft, the second light barrier central shaft are each passed through on the first spill spin block, the second spill spin block and substrate is rotated；The first torsion spring is equipped with first light barrier central shaft, the arm of determining of first torsion spring is limited on substrate, and torque arm is connected on the first spill spin block；The second torsion spring is equipped with second light barrier central shaft, second torsion spring is determined arm and is limited on substrate, and torque arm is connected on the second spill spin block；Connecting rod is provided between first spill spin block and the second spill spin block；The output shaft of motor connects a worm screw, and worm screw is meshed with a worm gear, and worm gear is fixed on the first light barrier central shaft.The present invention is not only compact to design, miniaturization, and simple in construction, cost is low, greatly reduces the complexity of projecting apparatus running.
Description
Technical field
The present invention relates to porjector technology field, especially a kind of projecting apparatus contrast adjustment mechanism.
Background technology
With the extensive use of projecting apparatus, people are also increasingly stronger to the dependence of projecting apparatus, especially to projecting apparatus
Contrast requirement.
In order to improve the contrast of projecting apparatus, an aperture can be typically set on projector light thread path, adjusted by the aperture
The intensity of light is saved, so as to reach the purpose for improving contrast.But, existing aperture uses machinist's moving vane structure,
Multiple mobilizable blades are combined, by the relative position and relative angle that control blade so that multiple blades are constituted altogether
The variable unthreaded hole of one size, luminous flux is controlled by the change of the unthreaded hole to change light intensity, so as to improve projection
The contrast of instrument.But this iris diaphragm structure is complicated, complex manufacturing, cost can be in any more, adds projecting apparatus running
Complexity, the quality to projecting apparatus produces large effect.
Therefore, prior art is needed to be improved and improved.
The content of the invention
In view of this, it is necessary to which a kind of simple in construction, compact to design, miniaturization, the low projecting apparatus contrast of cost are provided
Governor motion.
A kind of projecting apparatus contrast adjustment mechanism, including substrate, the first light barrier being parallel to each other positioned at side and
The bottom of the motor of two light barriers and opposite side, the first light barrier and the second light barrier is respectively equipped with the first light barrier central shaft
With the second light barrier central shaft, the first light barrier central shaft, the second light barrier central shaft are each passed through the first spill spin block, the second rotation
Switch block is rotated with the shaft hole matching on substrate；First is equipped with the first light barrier central shaft between first spill spin block and substrate
Torsion spring, the arm of determining of first torsion spring is limited on substrate, and torque arm is connected on the first spill spin block；Between second spill spin block and substrate
The second light barrier central shaft on be equipped with the second torsion spring, second torsion spring is determined arm and is limited on substrate, and torque arm is connected to second
On spill spin block；Connecting rod is provided between first spill spin block and the second spill spin block；The output shaft of motor connects a worm screw, worm screw and one
Worm gear is meshed, and worm gear is fixed on the first light barrier central shaft.
It is preferred that, raised, the projection and the photoelectric sensor phase on photoelectric sensor substrate is provided with the worm gear
Coordinate, photoelectric sensor substrate is installed on substrate.
The present invention is not only compact to design using after above-mentioned technical proposal, miniaturization, and simple in construction, cost is low, greatly
The big complexity for reducing projecting apparatus running, it is ensured that the quality of projecting apparatus.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Accompanying drawing 2 is another structural representation of the invention.
Each label is respectively in figure：(1) substrate, (2) first light barriers, (3) second light barriers, (4) motor, (5) first
Light barrier central shaft, (6) second light barrier central shafts, (7) first spill spin blocks, (8) second spill spin blocks, (9) first torsion springs, (10)
Second torsion spring, (11) connecting rod, (12) worm screw, (13) worm gear, (14) are raised, (15) photoelectric sensor substrate, (16) photoelectric sensing
Device.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the present invention is applied whereby
Technological means solves technical problem, and reaches the implementation process of technique effect and can fully understand and implement according to this.
Embodiment：
Refer to Fig. 1 and Fig. 2, a kind of projecting apparatus contrast adjustment mechanism of the invention, including substrate 1, the phase positioned at side
The motor 4 of mutual the first parallel light barrier 2 and the second light barrier 3 and opposite side, the first light barrier 2 and the second light barrier 3
Bottom is respectively equipped with the first light barrier central shaft 5 and the second light barrier central shaft 6, the first light barrier central shaft 5, the second light barrier
Central shaft 6 is each passed through the first spill spin block 7, the second spill spin block 8 and rotated with the shaft hole matching on substrate；First spill spin block 7 and base
The first torsion spring 9 is equipped with the first light barrier central shaft between plate, the arm of determining of first torsion spring is limited on substrate, torque arm connects
It is connected on the first spill spin block；The second torsion spring 10 is equipped with the second light barrier central shaft between second spill spin block 8 and substrate, should
Second torsion spring is determined arm and is limited on substrate, and torque arm is connected on the second spill spin block；Between first spill spin block 7 and the second spill spin block 8
It is provided with connecting rod 11；The output shaft of motor 4 connects a worm screw 12, and worm screw 12 is meshed with a worm gear 13, and worm gear 13 is fixed on the
On one light barrier central shaft 5.
As shown in Fig. 2 now contrast adjustment mechanism is in opening；During present invention work, motor 4 works, and drives
Worm screw 12 rotates, and worm screw 12 drives worm gear 13 to rotate, and worm gear 13 drives the first spill spin block 7 suitable by the first light barrier central shaft 5
Hour hands are rotated, and the first spill spin block 7 drives the second spill spin block 8 counterclockwise by the annexation of connecting rod 11, i.e., the first light barrier 2 is suitable
Hour hands are rotated, and the second light barrier 3 is rotated clockwise, and contrast adjustment mechanism is in full off state.
A projection 14, the projection and the phase of photoelectric sensor 14 on photoelectric sensor substrate 15 are provided with the worm gear 13
Coordinate, photoelectric sensor substrate 15 is installed on substrate 1, the photoelectric sensor is light shading type sensor, by the structure design,
When worm gear 13 is rotated, raised 14 concomitant rotation, when projection 14 turns to the light transmitting terminal and optical receiving end of photoelectric sensor 14
Between when, photoelectric sensor is in open-circuit condition, and motor 4 is stopped, prevent motor 4 work on may caused by first gear
Mating plate and the second light barrier are rotated through and crossed.
To sum up, the present invention solves the shortcomings of the prior art by above-mentioned structure design, not only designs tight
Gather, minimize, and simple in construction, cost is low, greatly reduces the complexity of projecting apparatus running, it is ensured that the product of projecting apparatus
Matter.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (2)
1. a kind of projecting apparatus contrast adjustment mechanism, it is characterised in that the first gear being parallel to each other including substrate, positioned at side
The bottom of the motor of mating plate and the second light barrier and opposite side, the first light barrier and the second light barrier is respectively equipped with first and is in the light
Piece central shaft and the second light barrier central shaft, the first light barrier central shaft, the second light barrier central shaft are each passed through the first rotation
Shaft hole matching on block, the second spill spin block and substrate is rotated；On the first light barrier central shaft between first spill spin block and substrate
The first torsion spring is equipped with, the arm of determining of first torsion spring is limited on substrate, and torque arm is connected on the first spill spin block；Second spill spin block
The second torsion spring is equipped with the second light barrier central shaft between substrate, second torsion spring is determined arm and is limited on substrate, torque arm
It is connected on the second spill spin block；Connecting rod is provided between first spill spin block and the second spill spin block；The output shaft of motor connects a snail
Bar, worm screw is meshed with a worm gear, and worm gear is fixed on the first light barrier central shaft.
2. projecting apparatus contrast adjustment mechanism as claimed in claim 1, it is characterised in that be provided with one on the worm gear convex
Rise, the projection is engaged with the photoelectric sensor on photoelectric sensor substrate, and photoelectric sensor substrate is installed on substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546744.7A CN107167994A (en) | 2017-07-06 | 2017-07-06 | A kind of projecting apparatus contrast adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710546744.7A CN107167994A (en) | 2017-07-06 | 2017-07-06 | A kind of projecting apparatus contrast adjustment mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107167994A true CN107167994A (en) | 2017-09-15 |
Family
ID=59822917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710546744.7A Pending CN107167994A (en) | 2017-07-06 | 2017-07-06 | A kind of projecting apparatus contrast adjustment mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107167994A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233450A (en) * | 2005-07-29 | 2008-07-30 | 松下电器产业株式会社 | Shutter device and driving method |
| JP2010175679A (en) * | 2009-01-28 | 2010-08-12 | Seiko Epson Corp | Projector |
| CN103257515A (en) * | 2012-02-20 | 2013-08-21 | 精工爱普生株式会社 | Light-adjusting unit and projector |
| CN104317147A (en) * | 2014-11-04 | 2015-01-28 | 深圳市安曼特微显示科技有限公司 | Rapid contrast adjusting structure and projector |
| CN206848673U (en) * | 2017-07-06 | 2018-01-05 | 东莞市恒生传感器有限公司 | A projector contrast adjustment mechanism |
-
2017
- 2017-07-06 CN CN201710546744.7A patent/CN107167994A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233450A (en) * | 2005-07-29 | 2008-07-30 | 松下电器产业株式会社 | Shutter device and driving method |
| JP2010175679A (en) * | 2009-01-28 | 2010-08-12 | Seiko Epson Corp | Projector |
| CN103257515A (en) * | 2012-02-20 | 2013-08-21 | 精工爱普生株式会社 | Light-adjusting unit and projector |
| CN104317147A (en) * | 2014-11-04 | 2015-01-28 | 深圳市安曼特微显示科技有限公司 | Rapid contrast adjusting structure and projector |
| CN206848673U (en) * | 2017-07-06 | 2018-01-05 | 东莞市恒生传感器有限公司 | A projector contrast adjustment mechanism |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170915 |