CN113009766A - Portable projection device capable of automatically accommodating and cleaning projection cloth - Google Patents
Portable projection device capable of automatically accommodating and cleaning projection cloth Download PDFInfo
- Publication number
- CN113009766A CN113009766A CN202110213420.8A CN202110213420A CN113009766A CN 113009766 A CN113009766 A CN 113009766A CN 202110213420 A CN202110213420 A CN 202110213420A CN 113009766 A CN113009766 A CN 113009766A
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- left end
- protective shell
- rolling
- projection device
- cleaning rod
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- 238000004140 cleaning Methods 0.000 title claims abstract description 45
- 239000004744 fabric Substances 0.000 title claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 57
- 238000005096 rolling process Methods 0.000 claims abstract description 37
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 230000010354 integration Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 abstract description 30
- 238000009434 installation Methods 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
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- B08B1/12—
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- B08B1/20—
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The invention discloses a portable projection device capable of automatically storing and cleaning projection cloth, which comprises a protective shell, wherein a winding opening is formed in the lower side surface of the protective shell, a winding shaft is arranged in the protective shell in a nested mode, baffles are uniformly connected to the left end and the right end of the winding shaft, the left end and the right end of the winding shaft respectively form a bearing connection structure with the left side and the right side of the inner portion of the protective shell, a transmission shaft is arranged in the winding shaft in a nested mode, a transmission joint is uniformly connected to the left end and the right end of the transmission shaft in a nested mode, a switching rod is fixedly connected to the left end of the transmission shaft, a pull ring is fixedly connected to the left end of the switching rod, and. This can accomodate portable projection arrangement of clearance projection cloth automatically can be convenient for to the curtain adjustment after the installation projection curtain, prevent that the curtain is crooked, and can carry out the rolling operation automatically, can clear up the curtain simultaneously to can carry out the rolling through manual operation under special circumstances.
Description
Technical Field
The invention relates to the technical field of projection equipment, in particular to a portable projection device capable of automatically containing and cleaning projection cloth.
Background
The projection device is a projector, is also called a projector, is equipment capable of projecting images onto a curtain, is widely applied to places such as families, schools, offices and the like, and nowadays, along with the development of science and technology, the application of the projector is more and more extensive.
But present portable projection arrangement accomodates the projection cloth in the automation of not being convenient for, and the automation of not being convenient for clears up the projection cloth to the level to the projection cloth is not convenient for adjust, and the projecting apparatus need arrange the projection curtain usually when using and use, thereby reaches best display effect, and present for projection arrangement curtain installation and adjustment operation are comparatively loaded down with trivial details, and the curtain can be infected with the ash after long-time the use and influence the formation of image effect.
Disclosure of Invention
The present invention provides a portable projector capable of automatically storing and cleaning a projection cloth, so as to solve the problems of the prior art that the conventional portable projector is inconvenient to automatically store the projection cloth, automatically clean the projection cloth, and adjust the level of the projection cloth.
In order to achieve the purpose, the invention provides the following technical scheme: a portable projection device capable of automatically containing and cleaning projection cloth comprises a protective shell, wherein a rolling opening is formed in the lower side surface of the protective shell, a rolling shaft is arranged in the protective shell in an embedded mode, baffles are uniformly connected to the left end and the right end of the rolling shaft, the left end and the right end of the rolling shaft respectively form a bearing connection structure with the left side and the right side of the inner portion of the protective shell, a transmission shaft is arranged in the embedded mode on the inner side of the rolling shaft, a transmission joint is uniformly connected to the left end and the right end of the transmission shaft, a switching rod is fixedly connected to the left end of the transmission shaft, a pull ring is fixedly connected to the left end of the switching rod, the switching rod is arranged in the embedded mode on the inner side of the left end of a first connecting sleeve, the right end of the first connecting sleeve and the left end of the, the right end of the mounting bracket is provided with a motor, the shaft end of the motor is fixedly connected with a second connecting sleeve, the left end of the second connecting sleeve and the right end of the protective shell form a bearing connecting structure, the left end and the right end of the lower side of the protective shell are fixedly connected with fixing seats respectively, the fixing seats respectively form the bearing connecting structure with the left end and the right end of an auxiliary cleaning rod, the auxiliary cleaning rod is arranged at the front side of the winding opening, the rear side of the winding opening is provided with a main cleaning rod, the left end and the right end of the main cleaning rod are in bearing connection with the fixing seats respectively, the left end and the right end of the main cleaning rod and the left end of the auxiliary cleaning rod are in fixed connection with synchronous gears respectively, the right end of the main cleaning rod is in key connection with a belt pulley, the belt pulley is connected with the lower end of a transmission belt, the upper end, and the left side of adjusting the slide rail is provided with the spout, the inboard sliding connection of spout has the locking bolt, and the right-hand member threaded connection of locking bolt in the left side of slider, the right-hand member rear side bearing of protective housing is connected with rotates the seat, and rotates the rear side of seat and be provided with the mounting panel.
Preferably, the front side of the protective shell is of a circular arc-shaped structure, the rear side of the protective shell is a rectangular flat plate, the rolling opening in the lower side of the protective shell penetrates through the side wall of the lower side of the protective shell, and an arc chamfer is arranged on the rolling opening.
Preferably, the baffle is in a circular ring shape, the baffle and the winding shaft form an H-shaped structure, and the position of the winding shaft is matched with the position of the winding opening.
Preferably, the transmission shaft is in a spline structure, and the transmission shaft and the inner side of the winding shaft form a spline connection structure.
Preferably, the structural shape of the transmission joint is a spline structure, the transmission joint, the first connecting sleeve and the second connecting sleeve form a spline connection structure, and chamfers are arranged at the inner ends of the first connecting sleeve and the second connecting sleeve.
Preferably, the structural shapes of the auxiliary cleaning rod and the main cleaning rod are cylindrical long rods, hairbrushes are uniformly distributed on the outer sides of the auxiliary cleaning rod and the main cleaning rod in a circumferential mode, and the auxiliary cleaning rod and a synchronous gear on the main cleaning rod are meshed with each other.
Preferably, the cross section of the sliding block is of a T-shaped structure, the overall structure of the sliding block is of a circular arc shape, and the structural shape of the sliding block is matched with the inner contour shape of the adjusting slide rail.
Preferably, the overall structure of the adjusting slide rail is arc-shaped, and mounting holes are formed in the adjusting slide rail and the mounting plate.
Compared with the prior art, the invention has the beneficial effects that: this can accomodate portable projection arrangement of clearance projection cloth automatically can be convenient for to the curtain adjustment after the installation projection curtain, prevent that the curtain is crooked, and can carry out the rolling operation automatically, can clear up the curtain simultaneously to can carry out the rolling through manual operation under special circumstances:
1. the left end of the protective shell is adjusted to enable the protective shell to rotate around the rotating seat as a circle center, the level of the protective shell is adjusted, then the locking bolt is screwed down by the wrench, the nut of the locking bolt extrudes the side wall of the adjusting slide rail, and the slide block is clamped tightly, so that the position of the protective shell is fixed, the installation process of the curtain is convenient to simplify, adjustment is not needed while the curtain is installed, the installation is faster, and the labor intensity of workers is reduced;
2. the second connecting sleeve is driven by the motor to rotate, the second connecting sleeve drives the transmission shaft and the winding shaft to rotate, so that the curtain is collected and released, the second connecting sleeve can drive the main cleaning rod to rotate through the transmission belt and the belt pulley when rotating, the main cleaning rod drives the auxiliary cleaning rod to rotate in opposite directions through the synchronous gear when rotating, and finally the surface of the curtain is cleaned through the brushes on the main cleaning rod and the auxiliary cleaning rod, so that the imaging quality is prevented from being influenced by excessive dust adhesion;
3. through the pulling pull ring, the pull ring passes through the switching rod pulling transmission shaft and slides in the inboard of rolling axle for the transmission of transmission shaft right-hand member connects and breaks away from the connection with No. two adapter sleeves, and the transmission of transmission shaft left end connects with adapter sleeve No. one simultaneously, drives the rolling axle through shaking the rocking handle and rotates to receive and release the operation to the curtain this moment, has expanded the device's application scenario through the mode switching function, makes the device still can keep the function under the special circumstances.
Drawings
FIG. 1 is a schematic left-side perspective view of the present invention;
FIG. 2 is an enlarged view of point A of FIG. 1 according to the present invention;
FIG. 3 is a right side perspective view of the present invention;
FIG. 4 is an enlarged view of point B of FIG. 3 according to the present invention;
FIG. 5 is a schematic bottom sectional view of the present invention;
FIG. 6 is an enlarged view of point C of FIG. 5 according to the present invention;
FIG. 7 is an enlarged view of point D of FIG. 5 according to the present invention;
FIG. 8 is a schematic top cross-sectional view of the present invention;
FIG. 9 is an enlarged view of point E in FIG. 8 according to the present invention;
FIG. 10 is an enlarged view of point F of FIG. 8 according to the present invention;
FIG. 11 is a schematic top view of the present invention;
FIG. 12 is a schematic cross-sectional view of a second connecting sleeve according to the present invention;
FIG. 13 is a schematic side sectional view of the present invention.
In the figure: 1. a protective shell; 2. winding an opening; 3. a winding shaft; 4. a baffle plate; 5. a drive shaft; 6. a drive joint; 7. a switch lever; 8. a first connecting sleeve; 9. a rocking handle; 10. mounting a bracket; 11. a fixed seat; 12. a secondary cleaning rod; 13. a synchronizing gear; 14. a belt pulley; 15. a drive belt; 16. a slider; 17. adjusting the slide rail; 18. a chute; 19. locking the bolt; 20. a rotating seat; 21. a second connecting sleeve; 22. a main cleaning rod; 23. a motor; 24. a pull ring; 25. and (7) mounting the plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-13, the present invention provides a technical solution: a portable projection device capable of automatically containing and cleaning projection cloth comprises a protective shell 1, a winding opening 2, a winding shaft 3, a baffle 4, a transmission shaft 5, a transmission joint 6, a switching rod 7, a first connecting sleeve 8, a rocking handle 9, a mounting bracket 10, a fixed seat 11, an auxiliary cleaning rod 12, a synchronous gear 13, a belt pulley 14, a transmission belt 15, a sliding block 16, an adjusting sliding rail 17, a sliding groove 18, a locking bolt 19, a rotating seat 20, a second connecting sleeve 21, a main cleaning rod 22, a motor 23, a pull ring 24 and a mounting plate 25, wherein the lower side surface of the protective shell 1 is provided with the winding opening 2, the winding shaft 3 is nested inside the protective shell 1, the baffle 4 is uniformly connected to the left end and the right end of the winding shaft 3, the left end and the right end of the winding shaft 3 respectively form a bearing connection structure with the left side and the right side inside the protective shell 1, the transmission, and the left and right ends of the transmission shaft 5 are connected with a transmission joint 6, the left end of the transmission shaft 5 is fixedly connected with a switching rod 7, the left end of the switching rod 7 is fixedly connected with a pull ring 24, the switching rod 7 is nested and arranged at the inner side of the left end of the first connecting sleeve 8, the right end of the first connecting sleeve 8 and the left end of the protective shell 1 form a bearing connecting structure, the left end of the first connecting sleeve 8 is fixedly connected with a rocking handle 9, the right end of the protective shell 1 is provided with a mounting bracket 10, the right end of the mounting bracket 10 is provided with a motor 23, the shaft end of the motor 23 is fixedly connected with a second connecting sleeve 21, the left end of the second connecting sleeve 21 and the right end of the protective shell 1 form a bearing connecting structure, the left and right ends of the lower side of the protective shell 1 are both fixedly connected with fixing seats 11, the fixing seats 11 respectively form bearing connecting, the rear side of rolling opening 2 is provided with main clean pole 22, and the equal bearing connection in both ends about main clean pole 22 has fixing base 11, and the equal fixedly connected with synchronizing gear 13 in both ends about main clean pole 22 and vice clean pole 12, the right-hand member key-type of main clean pole 22 has belt pulley 14, and belt pulley 14 is connected to the lower extreme of drive belt 15, and the upper end of drive belt 15 is connected with No. two adapter sleeve 21, the left end right side integration of protective housing 1 is provided with slider 16, and slider 16 sliding connection is in the inboard of adjusting slide rail 17, and the left side of adjusting slide rail 17 is provided with spout 18, the inboard sliding connection of spout 18 has locking bolt 19, and the right-hand member threaded connection of locking bolt 19 is in the left side of slider 16, the right-hand member rear side bearing of protective housing 1 is connected with and rotates seat 20, and the rear side.
The front side of protective housing 1 is convex structure, and the rear side of protective housing 1 is the rectangle flat board, and winding opening 2 of protective housing 1 downside runs through the downside lateral wall of protective housing 1, and be provided with the circular arc chamfer on winding opening 2, can be convenient for cooperate with baffle 4 and winding shaft 3's structural shape through the front end circular arc structure of protective housing 1, prevent that winding shaft 3 from crooked when rolling the curtain, and by the scratch when preventing the curtain rolling through the circular arc chamfer on winding opening 2.
The structural shape of baffle 4 is ring shape, and baffle 4 constitutes H shape structure with rolling axle 3 to the position of rolling axle 3 cooperatees with the position of rolling opening 2, can be convenient for carry on spacingly through baffle 4 to the both ends of curtain, prevents the curtain skew position when the rolling.
The structural shape of transmission shaft 5 is spline-shaped structure, and transmission shaft 5 constitutes spline connection structure with the inboard of rolling axle 3, can be convenient for guarantee that transmission shaft 5 keeps power transmission when the inboard of rolling axle 3 carries out the horizontal slip.
The structure shape of the transmission joint 6 is a spline-shaped structure, the transmission joint 6, the first connecting sleeve 8 and the second connecting sleeve 21 both form a spline connection structure, and chamfers are arranged at the inner ends of the first connecting sleeve 8 and the second connecting sleeve 21, so that the transmission joint 6 can be switched between the first connecting sleeve 8 and the second connecting sleeve 21 when the transmission shaft 5 slides in the winding shaft 3, and a power transmission path is switched.
The structural shape of vice clean pole 12 and main clean pole 22 is cylindrical stock, and the outside of vice clean pole 12 and main clean pole 22 all with the even distribution of circumference form has the brush to synchronous gear 13 intermeshing on vice clean pole 12 and the main clean pole 22 can be convenient for vice clean pole 12 and the main clean pole 22 is cleared up the curtain surface through the brush when rotating, prevents that the dust adhesion is on the curtain surface.
The cross-sectional shape of the slider 16 is a T-shaped structure, the overall structure of the slider 16 is arc-shaped, and the structural shape of the slider 16 is matched with the internal profile shape of the adjusting slide rail 17, so that the protective shell 1 can rotate around the rotating seat 20 through the matching of the slider 16 and the adjusting slide rail 17, and the overall level of the curtain can be adjusted.
The overall structure of the adjusting slide rail 17 is arc-shaped, and the adjusting slide rail 17 and the mounting plate 25 are provided with mounting holes, so that the protective shell 1 can be integrally and fixedly mounted through the mounting holes on the adjusting slide rail 17 and the mounting plate 25.
The working principle is as follows: according to fig. 1 and 11, firstly, bolts are used to fix the protective shell 1 by adjusting the mounting holes on the sliding rail 17 and the mounting plate 25;
according to fig. 2, 6 and 7, the left end of the protective shell 1 is adjusted to enable the protective shell 1 to rotate around the rotating seat 20 as a circle center, and the level of the protective shell 1 is adjusted;
when the left end of the protective shell 1 moves, the sliding block 16 on the lower side of the protective shell 1 slides on the inner side of the adjusting slide rail 17;
meanwhile, the locking bolt 19 slides on the inner side of the sliding groove 18, after the position of the protective shell 1 is adjusted, the locking bolt 19 is screwed by a wrench, so that the nut of the locking bolt 19 extrudes the side wall of the adjusting sliding rail 17, the sliding block 16 is clamped, and the position of the protective shell 1 is fixed;
according to fig. 10 and fig. 13, the motor 23 is started, the motor 23 drives the second connecting sleeve 21 to rotate, and the second connecting sleeve 21 drives the transmission joint 6 to rotate when rotating;
the transmission joint 6 drives the transmission shaft 5 to rotate when rotating, and the transmission shaft 5 drives the winding shaft 3 to rotate through a spline connection structure with the winding shaft 3 when rotating, so that the curtain is collected and released;
according to fig. 4 and 12, when the winding shaft 3 winds and unwinds the curtain, the second connecting sleeve 21 drives the main cleaning rod 22 to rotate through the transmission belt 15 and the belt pulley 14;
when the main cleaning rod 22 rotates, the auxiliary cleaning rod 12 is driven to rotate in the opposite direction through the synchronous gear 13;
the main cleaning rod 22 and the auxiliary cleaning rod 12 drive the brush to rotate, so that the curtain is cleaned while being folded and unfolded, and dust is prevented from adhering;
according to fig. 2 and 9, the pull ring 24 can be pulled when special conditions are met, such as the motor 23 fails or the motor 23 cannot be supplied with power;
the pull ring 24 pulls the transmission shaft 5 to slide on the inner side of the winding shaft 3 through the switching rod 7, so that the transmission joint 6 at the right end of the transmission shaft 5 is separated from the connection with the second connecting sleeve 21;
meanwhile, the transmission joint 6 at the left end of the transmission shaft 5 is connected with the first connecting sleeve 8, and at the moment, the rocking handle 9 is rocked, and the rocking handle 9 drives the first connecting sleeve 8 to rotate;
the first connecting sleeve 8 drives the transmission shaft 5 to rotate through the transmission joint 6 when rotating, and the transmission shaft 5 drives the rolling shaft 3 to rotate when rotating, so that the curtain can be collected and released.
It is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a can accomodate portable projection arrangement of clearance projection cloth automatically, includes protective housing (1), its characterized in that: the rolling device is characterized in that a rolling opening (2) is formed in the lower side surface of the protective shell (1), a rolling shaft (3) is arranged on the inner side of the protective shell (1) in an embedded mode, baffles (4) are uniformly connected to the left end and the right end of the rolling shaft (3), bearing connection structures are formed by the left end and the right end of the rolling shaft (3) and the left side and the right side of the inner portion of the protective shell (1) respectively, a transmission shaft (5) is arranged on the inner side of the rolling shaft (3) in an embedded mode, transmission joints (6) are uniformly connected to the left end and the right end of the transmission shaft (5), a switching rod (7) is fixedly connected to the left end of the transmission shaft (5), a pull ring (24) is fixedly connected to the left end of the switching rod (7), the switching rod (7) is arranged on the inner side of the left end of a first connecting, a rocking handle (9) is fixedly connected with the left end of the first connecting sleeve (8), a mounting support (10) is mounted at the right end of the protective shell (1), a motor (23) is mounted at the right end of the mounting support (10), a second connecting sleeve (21) is fixedly connected with the shaft end of the motor (23), the left end of the second connecting sleeve (21) and the right end of the protective shell (1) form a bearing connecting structure, fixing seats (11) are fixedly connected with the left end and the right end of the lower side of the protective shell (1), the fixing seats (11) and the left end and the right end of the auxiliary cleaning rod (12) form a bearing connecting structure respectively, the auxiliary cleaning rod (12) is arranged at the front side of the rolling opening (2), a main cleaning rod (22) is arranged at the rear side of the rolling opening (2), the fixing seats (11) are in bearing connection with the left end and the right end of the main cleaning rod (22), and the left end and the right end of the auxiliary cleaning rod (12) are fixedly connected with, the right-hand member key-type of main clean pole (22) has belt pulley (14), and belt pulley (14) and drive belt (15) the lower extreme to being connected to the upper end of drive belt (15) is connected with No. two adapter sleeves (21), protective housing (1) left end right side integration is provided with slider (16), and slider (16) sliding connection in the inboard of adjusting slide rail (17) to the left side of adjusting slide rail (17) is provided with spout (18), the inboard sliding connection of spout (18) has locking bolt (19), and the right-hand member threaded connection of locking bolt (19) in the left side of slider (16), the right-hand member rear side bearing of protective housing (1) is connected with and rotates seat (20), and rotates the rear side of seat (20) and is provided with mounting panel (25).
2. The portable projection device of claim 1, wherein the projection cloth can be automatically stored and cleaned, and the portable projection device comprises: the front side of the protective shell (1) is of a circular arc-shaped structure, the rear side of the protective shell (1) is a rectangular flat plate, the rolling opening (2) in the lower side of the protective shell (1) penetrates through the side wall of the lower side of the protective shell (1), and an arc chamfer is arranged on the rolling opening (2).
3. The portable projection device of claim 1, wherein the projection cloth can be automatically stored and cleaned, and the portable projection device comprises: the structure shape of baffle (4) is the ring shape, and baffle (4) and rolling axle (3) constitute H shape structure to the position of rolling axle (3) cooperatees with the position of rolling opening (2).
4. The portable projection device of claim 1, wherein the projection cloth can be automatically stored and cleaned, and the portable projection device comprises: the structure shape of transmission shaft (5) is spline shape structure, and transmission shaft (5) constitutes spline connection structure with the inboard of rolling axle (3).
5. The portable projection device of claim 1, wherein the projection cloth can be automatically stored and cleaned, and the portable projection device comprises: the structural shape of transmission joint (6) is spline-shaped structure, and transmission joint (6) all constitutes spline connection structure with adapter sleeve (8) and No. two adapter sleeves (21) to the inner of adapter sleeve (8) and No. two adapter sleeves (21) all is provided with the chamfer.
6. The portable projection device of claim 1, wherein the projection cloth can be automatically stored and cleaned, and the portable projection device comprises: the structure shapes of the auxiliary cleaning rod (12) and the main cleaning rod (22) are cylindrical long rods, hairbrushes are uniformly distributed on the outer sides of the auxiliary cleaning rod (12) and the main cleaning rod (22) in a circumferential mode, and the auxiliary cleaning rod (12) is meshed with a synchronous gear (13) on the main cleaning rod (22).
7. The portable projection device of claim 1, wherein the projection cloth can be automatically stored and cleaned, and the portable projection device comprises: the cross section of the sliding block (16) is of a T-shaped structure, the whole structure of the sliding block (16) is of a circular arc shape, and the structure of the sliding block (16) is matched with the inner contour shape of the adjusting sliding rail (17).
8. The portable projection device of claim 1, wherein the projection cloth can be automatically stored and cleaned, and the portable projection device comprises: the overall structure of the adjusting slide rail (17) is arc-shaped, and mounting holes are formed in the adjusting slide rail (17) and the mounting plate (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110213420.8A CN113009766A (en) | 2021-02-26 | 2021-02-26 | Portable projection device capable of automatically accommodating and cleaning projection cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110213420.8A CN113009766A (en) | 2021-02-26 | 2021-02-26 | Portable projection device capable of automatically accommodating and cleaning projection cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113009766A true CN113009766A (en) | 2021-06-22 |
Family
ID=76386078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110213420.8A Withdrawn CN113009766A (en) | 2021-02-26 | 2021-02-26 | Portable projection device capable of automatically accommodating and cleaning projection cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113009766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628481A (en) * | 2021-08-15 | 2021-11-09 | 夏培准 | Multimedia teaching equipment convenient to adjust |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070171522A1 (en) * | 2003-05-23 | 2007-07-26 | Guy Danthony | Masking device for a cinema screen |
| CN208240220U (en) * | 2018-03-21 | 2018-12-14 | 中影瑞航(北京)科技发展有限公司 | A kind of computer teaching projection screen wrap-up |
| CN110618579A (en) * | 2019-10-23 | 2019-12-27 | 浙江更土电子商务有限公司 | Automatic clean projection cloth |
| CN111538203A (en) * | 2020-04-27 | 2020-08-14 | 湘南学院 | Novel multimedia teaching for education device |
| CN111856868A (en) * | 2020-07-20 | 2020-10-30 | 芜湖数之宇电子科技有限公司 | Image display system |
-
2021
- 2021-02-26 CN CN202110213420.8A patent/CN113009766A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070171522A1 (en) * | 2003-05-23 | 2007-07-26 | Guy Danthony | Masking device for a cinema screen |
| CN208240220U (en) * | 2018-03-21 | 2018-12-14 | 中影瑞航(北京)科技发展有限公司 | A kind of computer teaching projection screen wrap-up |
| CN110618579A (en) * | 2019-10-23 | 2019-12-27 | 浙江更土电子商务有限公司 | Automatic clean projection cloth |
| CN111538203A (en) * | 2020-04-27 | 2020-08-14 | 湘南学院 | Novel multimedia teaching for education device |
| CN111856868A (en) * | 2020-07-20 | 2020-10-30 | 芜湖数之宇电子科技有限公司 | Image display system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113628481A (en) * | 2021-08-15 | 2021-11-09 | 夏培准 | Multimedia teaching equipment convenient to adjust |
| CN113628481B (en) * | 2021-08-15 | 2022-12-09 | 深圳华兆科技有限公司 | Multimedia teaching equipment convenient to adjust |
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Application publication date: 20210622 |