CN109061995B - Board is placed to projection arrangement - Google Patents
Board is placed to projection arrangement Download PDFInfo
- Publication number
- CN109061995B CN109061995B CN201811053994.8A CN201811053994A CN109061995B CN 109061995 B CN109061995 B CN 109061995B CN 201811053994 A CN201811053994 A CN 201811053994A CN 109061995 B CN109061995 B CN 109061995B
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- CN
- China
- Prior art keywords
- frame body
- projection
- bolt seat
- curtain
- rod
- 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.)
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Classifications
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a placing plate of a projection device, which comprises a base and the projection device, wherein a supporting rod is arranged at the upper end of the base and is connected through a connecting rod, an electric telescopic rod is arranged at the upper end of the connecting rod, a first frame body is arranged at the upper end of the electric telescopic rod, a second frame body is arranged inside the first frame body, a plate body is arranged inside the second frame body, the first frame body is movably connected with the second frame body and the plate body through a rotating shaft, the projection device is arranged at one side of the second frame body, hooks are arranged at two sides of a curtain end shaft close to one end of the plate body, hanging rings corresponding to the hooks are arranged at one side of the plate body close to the curtain end shaft, a first upper bolt seat and a first lower bolt seat corresponding to each other are arranged on the first frame body and the second frame body, and a second upper bolt. The projection screen is opened from the projection screen contraction box through the rotation of the plate body, and the conversion between the projection device and the plate body is carried out through rotating the second frame body and the plate body, so that the projection is facilitated, and meanwhile, the writing is facilitated.
Description
Technical Field
The invention relates to a placing board of a projection device.
Background
At present, with the progress of science and technology, projection screens are widely used in power supplies, offices, home theaters and large-scale meeting occasions, are used for displaying images and video files, and not only are the projection screen devices required to be used in daily teaching and meetings, but also the projection screens are required to be written and demonstrated on the board body, so that the conversion between the board body and the projection screen devices is required continuously, the time is wasted, and the efficiency is low.
Disclosure of Invention
The invention mainly aims to provide a projection screen placing plate, which is characterized in that a projection screen is opened from a projection screen contraction box through the rotation of a plate body, and the conversion between a projection device and the plate body is carried out through rotating a second frame body and the plate body, so that the projection is facilitated and the writing is facilitated. The invention can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a projection device placing plate comprises a base and two projection devices, wherein the number of the base is two, rollers are arranged at the lower end of the base, a supporting rod is arranged at the upper end of the base and is connected with the supporting rod through a connecting rod, an electric telescopic rod is arranged at the upper end of the connecting rod, a first frame body is arranged at the upper end of the electric telescopic rod, two sides of the first frame body are movably connected with the supporting rod, a second frame body is arranged inside the first frame body, a plate body is arranged inside the second frame body, a rotating shaft is arranged in the middle of the first frame body, the first frame body is movably connected with the second frame body and the plate body through the rotating shaft, a projection device is arranged on one side of the second frame body, the projection device comprises a projection curtain shrinkage box, a curtain end shaft and a projection curtain arranged in the projection curtain shrinkage box, and the curtain end shaft is connected with the projection curtain shrinkage box through the projection curtain, the curtain dead axle is close to the both sides of plate body one end and is equipped with the couple, one side that the plate body is close to the curtain dead axle is equipped with the link corresponding with the couple, the couple passes through connecting band interconnect with the link, be equipped with corresponding first upper bolt seat and first lower bolt seat in first framework and the second framework, first upper bolt seat is connected through first pin rod with first lower bolt seat, be equipped with corresponding second upper bolt seat second lower bolt seat on second framework and the plate body, bolt seat and second lower bolt seat pass through the second pin rod and are connected on the second.
Furthermore, the supporting rod is provided with a sliding groove, and two sides of the first frame body are movably connected with the supporting rod through the sliding groove.
Furthermore, a protruding rod is arranged on the outer side of the sliding groove on the supporting rod, and a groove corresponding to the protruding rod is formed in the first frame body.
Furthermore, the electric telescopic rod is detachably connected with the connecting rod.
Furthermore, a third lower bolt seat and a fourth lower bolt seat corresponding to the first lower bolt seat and the second lower bolt seat are arranged on the other side of the second frame body and the plate body, which is symmetrical to the central axis.
Furthermore, the second lower bolt seat and the fourth lower bolt seat are positioned at the upper end of the projection curtain in the projection device.
Furthermore, the projection screen in the projection device can be automatically retracted into the projection screen retraction box.
The working principle is as follows: when the projection screen is used, the second pin rod is pulled out from the second upper bolt seat and the second lower bolt seat, the plate body rotates clockwise through the rotating shaft, in the rotating process, the hanging ring on one side of the plate body drives the hook through the connecting band, the projection screen is pulled out from the projection screen contraction box through the stretching screen end shaft, the plate body stops after rotating 180 degrees, the second pin rod is inserted into the second upper bolt seat and the fourth lower bolt seat, the projection screen is opened along with the plate body at the moment, projection can be carried out, the height of the projection screen can be upwards adjusted through the electric telescopic rod at the bottom end of the first frame body, the first pin rod is pulled out from the first upper bolt seat and the first lower bolt seat when writing is needed, the second frame body is connected with the plate body and rotates 180 degrees with the whole projection device, the first pin rod is inserted into the first upper bolt seat and the third lower bolt seat, and the opposite side of the projection screen on the plate body can write at the moment.
Has the advantages that: can expand the projection curtain fast, conveniently switch projection curtain and plate body simultaneously, save time and efficient.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the projection screen according to the present invention.
FIG. 3 is a top view of the present invention.
FIG. 4 is an enlarged view of the present invention at A.
In the figure: 1 a first frame body; 2, rotating a shaft; 3 a second frame body; 4 a first upper bolt seat; 5 a first pin; 6 a second upper bolt seat; 7 a second pin; 8, a plate body; 9 supporting rods; 10, rollers; 11, an electric telescopic rod; 12 connecting rods; 13 a base; 14 projection screen retraction box; 15 curtain end shafts; 16, hanging hooks; 17 connecting the belt; 18, hanging a ring; 19 a first lower bolt seat; 20 a second lower bolt seat; 21, a chute; 22 a third lower bolt seat; 23 a fourth lower bolt seat; 24 a nose bar; 25 grooves; 26 a projection screen; 27 projection means.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, a projection apparatus placing board includes a base 13 and a projection apparatus 27, the number of the base 13 is two, the lower end of the base 13 is provided with a roller 10, the upper end of the base 13 is provided with a support rod 9, the support rod 9 is connected by a connection rod 12, the upper end of the connection rod 12 is provided with an electric telescopic rod 11, the upper end of the electric telescopic rod 11 is provided with a first frame 1, two sides of the first frame 1 are movably connected with the support rod 9, the first frame 1 is internally provided with a second frame 3, the second frame 3 is internally provided with a plate 8, the middle of the first frame 1 is provided with a rotating shaft 2, the first frame 1 is movably connected with the second frame 3 and the plate 8 by the rotating shaft 2, one side of the second frame 3 is provided with the projection apparatus 27, the projection apparatus 27 includes a projection curtain shrinkage box 14, a curtain end shaft 15, and a curtain end shaft 15, And the projection curtain 26 is arranged in the projection curtain contraction box 14, the curtain end shaft 15 is connected with the projection curtain contraction box 14 through the projection curtain 26, hooks 16 are arranged on two sides of the curtain end shaft 15 close to one end of the plate body 8, a hanging ring 18 corresponding to the hooks 16 is arranged on one side of the plate body 8 close to the curtain end shaft 15, the hooks 16 and the hanging ring 18 are connected with each other through a connecting belt 17, a first upper bolt seat 4 and a first lower bolt seat 19 corresponding to each other are arranged on the first frame body 1 and the second frame body 3, the first upper bolt seat 4 and the first lower bolt seat 19 are connected through a first pin rod 5, a second upper bolt seat 6 and a second lower bolt seat 20 corresponding to each other are arranged on the second frame body 3 and the plate body 8, and the second upper bolt seat 6 and the second lower bolt seat 20 are connected through a second pin rod 7.
The supporting rod 9 is provided with a sliding groove 21, two sides of the first frame 1 are movably connected with the supporting rod 9 through the sliding groove 21, and when the projection curtain 26 is unfolded, the first frame 1 and the second frame 3 and the plate 8 in the first frame 1 can be lifted upwards together with the projection device 27 along the sliding groove 21 on the supporting rod 9 through the electric telescopic rod 11.
A protruding rod 24 is arranged on the supporting rod 9 and located outside the sliding groove 21, a groove 25 corresponding to the protruding rod 24 is arranged on the first frame body 1, and when the first frame body 1 moves upwards, the protruding rod 24 also moves in the groove 25, so that the first frame body 1 can be guided and limited.
The electric telescopic rod 11 is detachably connected with the connecting rod 12, and when projection is not needed and writing is carried out on a plate body, the independent use of the electric telescopic rod 11 is not influenced.
The third lower bolt seat 22 and the fourth lower bolt seat 23 corresponding to the first lower bolt seat 19 and the second lower bolt seat 20 are disposed on the other side of the second frame body 3 and the plate body 8, which is located on the axis symmetry, so that when the second frame body 3 and the plate body 8 rotate 180 degrees along the rotation axis 2, the second frame body 3 and the plate body 8 can be conveniently fixed.
The second lower bolt seat 19 is located at the upper end of the projection screen 26 in the projection device 27, and when the projection screen 26 is opened, the second lower bolt seat 19 will not block the projection screen 26.
The projection curtain 26 in the projection apparatus 27 can be automatically retracted into the projection curtain retraction box 14, so that the projection curtain 26 can be rapidly retracted into the projection curtain retraction box 14 when the plate 8 is rotated counterclockwise.
In the embodiment, when in use, the second pin 7 is pulled out from the second upper bolt seat 6 and the second lower bolt seat 20, the plate 8 is rotated clockwise through the rotating shaft 2, during the rotation, the hanging ring 18 at one side of the plate 8 drives the hook 16 to stretch the curtain end shaft 15 through the connecting band 17 to pull the projection curtain 26 out from the projection curtain contraction box 14, when the plate 8 is rotated 180 degrees and then stops, the second pin 7 is inserted into the second upper bolt seat 6 and the fourth lower bolt seat 23, at this time, the projection curtain 26 is opened along with the plate 8, projection can be performed, the electric telescopic rod 11 at the bottom end of the first frame 1 can adjust the height of the projection curtain 26 upwards, when writing is needed, the first pin 5 is pulled out from the first upper bolt seat 4 and the first lower bolt seat 19, the second frame 3 carries the plate 8 to rotate 180 degrees with the whole projection device 27, and then the first pin 5 is inserted into the first upper bolt seat 4 and the third lower bolt seat 22, in this case, the opposite side of the plate 8 to the projection screen 26 can be written on.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (6)
1. The utility model provides a board is placed to projection arrangement, includes base, projection arrangement, its characterized in that: the number of the bases is two, the lower end of each base is provided with a roller, the upper end of each base is provided with a support rod, the support rods are connected through a connecting rod, the upper end of each connecting rod is provided with an electric telescopic rod, the upper end of each electric telescopic rod is provided with a first frame body, two sides of each first frame body are movably connected with the corresponding support rod, a second frame body is arranged inside each first frame body, a plate body is arranged inside each second frame body, the middle of each first frame body is provided with a rotating shaft, each first frame body is movably connected with the corresponding second frame body and the corresponding plate body through the rotating shaft, one side of each second frame body is provided with a projection device, each projection device comprises a projection curtain shrinkage box, a curtain end shaft and a projection curtain arranged in the projection curtain shrinkage box, the curtain end shaft is connected with the projection curtain shrinkage box through the projection curtain, and hooks are arranged on two sides of the curtain end shaft close, the curtain comprises a curtain body and is characterized in that a hanging ring corresponding to the hook is arranged on one side, close to a curtain end shaft, of the curtain body, the hook and the hanging ring are connected with each other through a connecting belt, a first upper bolt seat and a first lower bolt seat which correspond to each other are arranged on a first frame body and a second frame body, the first upper bolt seat and the first lower bolt seat are connected through a first pin rod, a second upper bolt seat and a second lower bolt seat which correspond to each other are arranged on the second frame body and the curtain body, the second upper bolt seat and the second lower bolt seat are connected through a second pin rod, and a third lower bolt seat and a fourth lower bolt seat which correspond to the first lower bolt seat and the second lower bolt seat are arranged on the other side, which is located on axial symmetry, of the second frame body and the.
2. A projection device placement board according to claim 1, wherein: the support rod is provided with a sliding groove, and two sides of the first frame body are movably connected with the support rod through the sliding groove.
3. A projection device placement board according to claim 1, wherein: the outer side of the supporting rod, which is positioned on the sliding groove, is provided with a convex rod, and the first frame body is provided with a groove corresponding to the convex rod.
4. A projection device placement board according to claim 1, wherein: the electric telescopic rod is detachably connected with the connecting rod.
5. A projection device placement board according to claim 1, wherein: the second lower bolt seat and the fourth lower bolt seat are positioned at the upper end of a projection curtain in the projection device.
6. A projection device placement board according to claim 1, wherein: the projection curtain in the projection device can be automatically contracted into the projection curtain contraction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053994.8A CN109061995B (en) | 2018-09-11 | 2018-09-11 | Board is placed to projection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811053994.8A CN109061995B (en) | 2018-09-11 | 2018-09-11 | Board is placed to projection arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109061995A CN109061995A (en) | 2018-12-21 |
| CN109061995B true CN109061995B (en) | 2020-12-15 |
Family
ID=64760108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811053994.8A Active CN109061995B (en) | 2018-09-11 | 2018-09-11 | Board is placed to projection arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109061995B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315890A (en) * | 2019-07-24 | 2019-10-11 | 范会平 | A kind of multi-functional speech plate |
| CN112863257B (en) * | 2021-01-21 | 2022-04-29 | 菏泽学院 | Case analysis device for political and economic teaching |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH595672A5 (en) * | 1975-11-24 | 1978-02-15 | Carpano & Pons | |
| CN203905542U (en) * | 2014-06-29 | 2014-10-29 | 孙秀娟 | Multimedia teaching curtain supporting-storing device |
| CN204087526U (en) * | 2014-09-27 | 2015-01-07 | 孙化奎 | Teaching projection arrangement |
| CN204155058U (en) * | 2014-11-13 | 2015-02-11 | 河南科技学院 | A kind of energy-saving type educational projector curtain |
| CN204406726U (en) * | 2015-01-22 | 2015-06-17 | 哈尔滨剑桥学院 | The multimedia teaching apparatus that Financial Management Teaching uses |
| CN204915005U (en) * | 2015-03-09 | 2015-12-30 | 淮安市成达教学用品有限公司 | Multifunctional blackboard |
| CN205177218U (en) * | 2015-11-27 | 2016-04-20 | 殷柯望 | Combined politics teaching board |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201086536Y (en) * | 2007-09-29 | 2008-07-16 | 重庆电力高等专科学校 | Multimedia environment-protection universal blackboard |
-
2018
- 2018-09-11 CN CN201811053994.8A patent/CN109061995B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH595672A5 (en) * | 1975-11-24 | 1978-02-15 | Carpano & Pons | |
| CN203905542U (en) * | 2014-06-29 | 2014-10-29 | 孙秀娟 | Multimedia teaching curtain supporting-storing device |
| CN204087526U (en) * | 2014-09-27 | 2015-01-07 | 孙化奎 | Teaching projection arrangement |
| CN204155058U (en) * | 2014-11-13 | 2015-02-11 | 河南科技学院 | A kind of energy-saving type educational projector curtain |
| CN204406726U (en) * | 2015-01-22 | 2015-06-17 | 哈尔滨剑桥学院 | The multimedia teaching apparatus that Financial Management Teaching uses |
| CN204915005U (en) * | 2015-03-09 | 2015-12-30 | 淮安市成达教学用品有限公司 | Multifunctional blackboard |
| CN205177218U (en) * | 2015-11-27 | 2016-04-20 | 殷柯望 | Combined politics teaching board |
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| Publication number | Publication date |
|---|---|
| CN109061995A (en) | 2018-12-21 |
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