CN106597781A - Projector focusing mechanism - Google Patents
Projector focusing mechanism Download PDFInfo
- Publication number
- CN106597781A CN106597781A CN201510663786.XA CN201510663786A CN106597781A CN 106597781 A CN106597781 A CN 106597781A CN 201510663786 A CN201510663786 A CN 201510663786A CN 106597781 A CN106597781 A CN 106597781A
- Authority
- CN
- China
- Prior art keywords
- tooth bar
- gear
- poke rod
- gear train
- engaged
- 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
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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
-
- 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
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a projector focusing mechanism, which comprises a gear fixation support, a stepping motor, a gear group, a toothed bar, a poker rod and an aperture. The stepping motor and the gear group are arranged on the two side surfaces of the gear fixation support respectively; an output shaft of the stepping motor is connected with an input shaft of the gear group; the gear group is engaged with the toothed bar; the toothed bar is slidably connected on the gear fixation support and is movably connected with an inner end of the poker rod; and an outer end of the poker rod is fixedly arranged on the aperture. The stepping motor drives the toothed bar to move back and forth through the gear group, and the toothed bar drives the aperture to rotate through the poker rod to reach an automatic focal length adjustment purpose; and the mechanism is very convenient to use.
Description
Technical field
The present invention relates to a kind of projector, more particularly to a kind of projector focus adjusting mechanism.
Background technology
Projector, is a kind of the equipment on image or VIDEO PROJECTION to curtain can be connected the corresponding video signal of broadcasting by the different same computer of interface, VCD, DVD, BD, game machine, DV etc. also known as scialyscope.Projector is widely used in family, office, school and public place of entertainment.Projector generally requires focusing and is adjusted in playing process, and the focus adjustment method commonly used is to stir aperture with handss, is adjusted, and this focus adjustment mode is more inconvenient.
The content of the invention
It is an object of the invention to provide a kind of projector focus adjusting mechanism easy to use.
For achieving the above object, technical solution of the invention is：
The present invention is a kind of projector focus adjusting mechanism, including gear fixed support, motor, gear train, tooth bar, poke rod, aperture；Described motor and gear train is separately mounted on support bracket fastened two sides of gear, the output shaft of motor is connected with gear train, gear train is engaged with tooth bar, and tooth bar slips on gear fixed support and is flexibly connected with the inner of poke rod, and the outer end of poke rod is fixed on aperture.
Described tooth bar side is provided with a lug, and a groove is opened up on lug, one projection of projection vertically upward on the inner of poke rod, and the projection gap is nested with the groove of tooth bar lug.
Present invention additionally comprises a wear washer, described wear washer is socketed on the projection of poke rod and gap is nested with the groove of tooth bar lug.
Described gear train by driving wheel, active wheels, breast wheel group, driven wheels into.The fixedly sleeved output shaft in motor of described driving wheel；Described active wheels, breast wheel group, driven pulley is all rotatably mounted on gear fixed support by rotating shaft, and driving wheel is engaged with active wheels, and active wheels are engaged with breast wheel group, and breast wheel group is engaged with driven pulley, driven wheel and rack engagement.
Present invention additionally comprises two travel switches；Two described travel switches are respectively mounted on gear fixed support and positioned at the two ends of tooth bar motion track.
After using such scheme, because the present invention includes gear fixed support, motor, gear train, tooth bar, poke rod, aperture；Motor drives tooth bar to move back and forth by gear train, and tooth bar drives aperture to rotate by poke rod, reaches the purpose for automatically adjusting focal length, very convenient to use.
Below in conjunction with the accompanying drawings the present invention is further illustrated with specific embodiment.
Description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the rearview of the present invention；
Fig. 3 is the side view of the present invention；
Fig. 4 is the top view of the present invention；
Fig. 5 is the three-dimensional exploded view of the present invention；
Fig. 6 is front view of the present invention installed in optical engine case.
Specific embodiment
As Figure 1-Figure 5, the present invention is a kind of projector focus adjusting mechanism, including gear fixed support 1, motor 2, gear train 3, tooth bar 4, poke rod 5, aperture 6,7, two travel switches 81 of wear washer, 82, circuit board 9.
Described gear fixed support 1 is arranged on the side of optical engine case 10（As shown in Figure 6）, motor 2 and gear train 3 be separately mounted on two sides of gear fixed support 1, and the output shaft of motor 2 is connected with the gear train 3 installed in the opposite side of gear fixed support 1, and gear train 3 is engaged with tooth bar 4, and tooth bar 4 is slipped on gear fixed support 1.
The described side of tooth bar 4 is provided with a lug 41, a groove 42 is opened up on lug 41, one projection 51 of projection vertically upward on the inner of poke rod 5, described wear washer 7 is socketed on the projection 51 of poke rod 5, the gap of projection 51 for being socketed with wear washer 7 is nested with the groove 42 of the lug 41 of tooth bar 4, is formed with tooth bar 4 and is flexibly connected.The outer end of poke rod 5 is fixed on aperture 6.
As shown in figure 1, in the present embodiment, described gear train 3 is by driving wheel 30, active wheels 31, breast wheel group 32, driven wheels into 33.The fixedly sleeved output shaft in motor 2 of described driving wheel 30；Described active wheels 31, breast wheel group 32, driven pulley 33 is all rotatably mounted on gear fixed support 1 by rotating shaft, driving wheel 30 is engaged with active wheels 31, active wheels 31 are engaged with breast wheel group 32, and breast wheel group 32 is engaged with driven pulley 33, and driven pulley 33 is engaged with tooth bar 4.Described active wheels 31 are made up of the big drivewheel 311 and little drivewheel 312 that are coaxially disposed.Described breast wheel group 32 is made up of the big breast wheel 321 and little breast wheel 322 that are coaxially disposed.
As shown in Fig. 2 described two travel switches 81,82 are respectively mounted on gear fixed support 1 and positioned at the two ends of the motion track of tooth bar 4.For controlling the stroke of tooth bar 4.
As shown in Fig. 2, Fig. 5, described circuit board 9 is arranged on gear fixed support 1, for controlling the startup and closing of motor 2.
The operation principle of the present invention：
As shown in figure 1, described motor 2 drives tooth bar 4 to move back and forth by gear train 3, tooth bar 4 is rotated by the drive aperture 6 of poke rod 5 with its gap socket, so as to reach the purpose for automatically adjusting focal length.
The emphasis of the present invention is that：Motor drives aperture.
The above, only present pre-ferred embodiments, the version of gear train can have various, therefore can not limit the scope of present invention enforcement with this, the equivalence changes made according to scope of the present invention patent and description and modification, all should still remain within the scope of the patent.
Claims (6)
1. a kind of projector focus adjusting mechanism, it is characterised in that：Including gear fixed support, motor, gear train, tooth bar, poke rod, aperture；Described motor and gear train is separately mounted on support bracket fastened two sides of gear, the output shaft of motor is connected with gear train, gear train is engaged with tooth bar, and tooth bar slips on gear fixed support and is flexibly connected with the inner of poke rod, and the outer end of poke rod is fixed on aperture.
2. projector focus adjusting mechanism according to claim 1, it is characterised in that：Described tooth bar side is provided with a lug, and a groove is opened up on lug, one projection of projection vertically upward on the inner of poke rod, and the projection gap is nested with the groove of tooth bar lug.
3. projector focus adjusting mechanism according to claim 2, it is characterised in that：Also include a wear washer, described wear washer is socketed on the projection of poke rod and gap is nested with the groove of tooth bar lug.
4. projector focus adjusting mechanism according to claim 1, it is characterised in that：Described gear train by driving wheel, active wheels, breast wheel group, driven wheels into.
5. the fixedly sleeved output shaft in motor of driving wheel described in；Described active wheels, breast wheel group, driven pulley is all rotatably mounted on gear fixed support by rotating shaft, and driving wheel is engaged with active wheels, and active wheels are engaged with breast wheel group, and breast wheel group is engaged with driven pulley, driven wheel and rack engagement.
6. projector focus adjusting mechanism according to claim 1, it is characterised in that：Also include two travel switches；Two described travel switches are respectively mounted on gear fixed support and positioned at the two ends of tooth bar motion track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663786.XA CN106597781A (en) | 2015-10-15 | 2015-10-15 | Projector focusing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510663786.XA CN106597781A (en) | 2015-10-15 | 2015-10-15 | Projector focusing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106597781A true CN106597781A (en) | 2017-04-26 |
Family
ID=58553137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510663786.XA Pending CN106597781A (en) | 2015-10-15 | 2015-10-15 | Projector focusing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106597781A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319782A (en) * | 2018-03-30 | 2019-10-11 | 中强光电股份有限公司 | Projection arrangement, backlash detection system and its method |
| WO2019242324A1 (en) * | 2018-06-19 | 2019-12-26 | 深圳光峰科技股份有限公司 | Focus-fixed lens and imaging system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203365895U (en) * | 2013-08-13 | 2013-12-25 | 胡震宇 | Lens focusing motor for projector |
| CN203573076U (en) * | 2013-09-29 | 2014-04-30 | 深圳市天辅乘云科技有限公司 | Projector light engine capable of automatic focusing |
| CN204229106U (en) * | 2014-11-12 | 2015-03-25 | 南靖万利达科技有限公司 | A kind of focusing structure of micro projector |
| CN204229104U (en) * | 2014-10-13 | 2015-03-25 | 南靖万利达科技有限公司 | A kind of ray machine focusing structure of projector |
| CN204389854U (en) * | 2015-03-02 | 2015-06-10 | 杭州藏愚科技有限公司 | A kind of lens automatic focusing device |
| CN205139557U (en) * | 2015-10-15 | 2016-04-06 | 南靖万利达科技有限公司 | Projecting apparatus focusing mechanism |
-
2015
- 2015-10-15 CN CN201510663786.XA patent/CN106597781A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203365895U (en) * | 2013-08-13 | 2013-12-25 | 胡震宇 | Lens focusing motor for projector |
| CN203573076U (en) * | 2013-09-29 | 2014-04-30 | 深圳市天辅乘云科技有限公司 | Projector light engine capable of automatic focusing |
| CN204229104U (en) * | 2014-10-13 | 2015-03-25 | 南靖万利达科技有限公司 | A kind of ray machine focusing structure of projector |
| CN204229106U (en) * | 2014-11-12 | 2015-03-25 | 南靖万利达科技有限公司 | A kind of focusing structure of micro projector |
| CN204389854U (en) * | 2015-03-02 | 2015-06-10 | 杭州藏愚科技有限公司 | A kind of lens automatic focusing device |
| CN205139557U (en) * | 2015-10-15 | 2016-04-06 | 南靖万利达科技有限公司 | Projecting apparatus focusing mechanism |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319782A (en) * | 2018-03-30 | 2019-10-11 | 中强光电股份有限公司 | Projection arrangement, backlash detection system and its method |
| CN110319782B (en) * | 2018-03-30 | 2021-06-08 | 中强光电股份有限公司 | Projection device, backlash detection system and method thereof |
| US11300867B2 (en) | 2018-03-30 | 2022-04-12 | Coretronic Corporation | Projection apparatus, backlash detecting system and method thereof |
| WO2019242324A1 (en) * | 2018-06-19 | 2019-12-26 | 深圳光峰科技股份有限公司 | Focus-fixed lens and imaging system |
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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: 20170426 |