CN209028854U - A kind of dual-purpose instructional device of writing projection - Google Patents
A kind of dual-purpose instructional device of writing projection Download PDFInfo
- Publication number
- CN209028854U CN209028854U CN201820960479.7U CN201820960479U CN209028854U CN 209028854 U CN209028854 U CN 209028854U CN 201820960479 U CN201820960479 U CN 201820960479U CN 209028854 U CN209028854 U CN 209028854U
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- panel
- storehouse box
- dual
- writing
- instructional device
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Abstract
The utility model discloses a kind of writings to project dual-purpose instructional device, including panel；The panel is equipped with storehouse box along the wherein one end in length direction；Rotation axis and projection screen are provided in the storehouse box；On the rotating shaft, the other end, which extends outwardly from storehouse box towards the side of panel, is covered on panel surface for the projection screen one ends wound setting；Side of the panel far from storehouse box is slided along the vertical direction is provided with expansion board；The panel area being blocked when being projected is compensated for by expansion board, takes into account writing on the blackboard and drop shadow effect；Overcome that the small blackboard eraser area of tradition is small by the way that erasing apparatus is arranged in panel bottom, wiping time long disadvantage significantly reduces the time of erasing writing on the blackboard, keeps classroom rhythm more coherent；By being embedded blackboard eraser on erasing apparatus, the function supplement of small range erasing is realized, is cooperated using hinged finger ring and groove, is avoided the shortcomings that traditional holding method nail marks audible noise with plate face, be obviously improved use feeling.
Description
Technical field
The utility model relates to projection arts more particularly to a kind of writing to project dual-purpose instructional device.
Background technique
Projection arrangement is a kind of important tutor auxiliary platform equipment in school, and teacher is by by paper, handout or mobile device
In file cast out, enable student is apparent intuitively to obtain information, while the writing on the blackboard time is also greatly saved.However
Traditional projection screen in order to obtain it is preferable to show that angle needs centrally-disposed as far as possible, usually can be to original black
Plate, blank cause to block, to have compressed the region for writing on the blackboard.Meanwhile the erasing work after writing in plate face usually needs
Many times are expended, cause classroom rhythm slow, to influence quality of instruction.It is a kind of with interim expansion it is therefore necessary to invent
Panel face, written contents erasing rapidly write and project dual-purpose instructional device.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of with temporary extension
Plate face, written contents erasing rapidly write and project dual-purpose instructional device.
Technical solution: to achieve the above object, a kind of writing of the utility model projects dual-purpose instructional device, including exhibition
Plate；The panel is equipped with storehouse box along the wherein one end in length direction；Rotation axis and projection screen are provided in the storehouse box
Cloth；On the rotating shaft, the other end extends outwardly covering from storehouse box towards the side of panel for projection screen one ends wound setting
On panel surface；Side of the panel far from storehouse box is slided along the vertical direction is provided with expansion board.
Further, the panel bottom is provided with erasing apparatus；The erasing apparatus includes roller bearing, brush body and backboard；
The roller bearing is mounted on side of the backboard towards panel；The brush body is fixed at roller length direction two sides；The roller bearing
By magnetization treatment；The panel is provided with steel stiffening plate backwards to the fitting of the side of erasing apparatus.
Further, the erasing apparatus is embedded with blackboard eraser backwards to the side of panel；The blackboard eraser includes mounting plate；It is described
Mounting plate is provided with cleaning cloth towards the side cladding of panel；Foam-rubber cushion has been filled between the mounting plate and cleaning cloth；
The mounting plate is hingedly provided with finger ring backwards to the side of panel.
Further, circumferentially spaced-apart setting is fluted around the finger ring；The groove shapes and finger fingertip cooperate.
The utility model has the advantages that a kind of writing of the utility model projects dual-purpose instructional device, including panel；The panel is along itself
Wherein one end of length direction is equipped with storehouse box；Rotation axis and projection screen are provided in the storehouse box；The projection screen one
On the rotating shaft, the other end, which extends outwardly from storehouse box towards the side of panel, is covered on panel surface for end winding setting；The exhibition
Side of the plate far from storehouse box is slided along the vertical direction is provided with expansion board；It is compensated for by expansion board and is blocked when being projected
Panel area takes into account writing on the blackboard and drop shadow effect；The small blackboard eraser of tradition is overcome by the way that erasing apparatus is arranged in panel bottom
Area is small, and the disadvantage of wiping time length significantly reduces the time of erasing writing on the blackboard, keeps classroom rhythm more coherent；By wiping
Except blackboard eraser is embedded on device, the function supplement of small range erasing is realized, is cooperated using hinged finger ring and groove, avoids biography
The shortcomings that system holding method nail and plate face mark audible noise, has been obviously improved use feeling.
Detailed description of the invention
Attached drawing 1 is to write the overall structure figure for projecting dual-purpose instructional device；
Attached drawing 2 is erasing apparatus structural schematic diagram；
Attached drawing 3 is eraser structure schematic diagram.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.
A kind of dual-purpose instructional device of writing projection, as shown in Fig. 1, including panel 1；The panel 1 is fixed at wall
On face；The panel 1 is equipped with storehouse box 2 along the wherein one end in length direction, and storehouse box 2 is arranged along the vertical direction；The storehouse
Rotation axis and projection screen 22 are provided in box 2；On the rotating shaft, the other end is from storehouse for 22 one ends wound of projection screen setting
Box 2 extends outwardly towards the side of panel 1 is covered on 1 surface of panel；The side of the panel 1 far from storehouse box 2 is along the vertical direction
Sliding is provided with expansion board 11, and expansion board 11 is reciprocatingly slided by sliding slot realization；The curling usually of projection screen 22 is accommodated in storehouse box 2
It is interior, when being projected, projection screen 22 is pulled open to the surface for spreading over panel 1 to the direction far from storehouse box 2, at this time may be used
Preferentially to push up expansion board 11 after the region writes in the enterprising andante book of expansion board 11, make bottom exhibition of the same area
Plate 1 exposes, and is projected the area that curtain 22 blocks to make up；The pull handle 221 of projection screen 22 is provided with towards 1 side of panel
Magnetic adsorption plate can be adsorbed on by magnetic adsorption plate and realize and fix in plate face, while micromotor is equipped in rotation axis can be with
Projection screen 22 is driven to bounce back.
As shown in Fig. 2, erasing apparatus 3 is placed on the articles holding table 13 of 1 bottom of panel；The erasing apparatus 3 wraps
Include roller bearing 31, brush body 32 and backboard 33；The roller bearing 31 is mounted on side of the backboard 33 towards panel 1；The brush body 32 is fixed
It is arranged in 31 length direction two sides of roller bearing；The roller bearing 31 passes through magnetization treatment；The panel 1 is backwards to the side of erasing apparatus 3
Fitting is provided with steel stiffening plate；Roller bearing 31 realizes that fitting rolls by the surface that magnetic acts on panel 1, and significantly reducing makes
The pressing of user is exerted oneself；The end of brush body 32 is slightly higher than roller bearing 31, wipes under the action of pressing force to plate face, for general
Logical blackboard uses plastics hard brush body, and brush body made of class cloth flexible material is then used for blank；User passes through holding rod
36, which operate the erasing apparatus 3, moves back and forth cleaning writing on the surface of panel 1, not only saves by magnetic attraction and scrolling realization
Power, and overcome that the small blackboard eraser area of tradition is small, wiping time long disadvantage, significantly reduces the time of erasing writing on the blackboard, makes class
Hall rhythm is more coherent.
As shown in Fig. 3, the erasing apparatus 3 is embedded with blackboard eraser 4 backwards to the side of panel 1, can carry out targetedly
Small range erasing；The blackboard eraser 4 includes mounting plate 41, which uses steel material, can be by the magnetic of roller bearing 31
It is more firm when power makes to inlay to will not fall off, also avoid additional fixation device；The side of the mounting plate 41 towards panel 1
Cladding is provided with cleaning cloth；It has been filled with foam-rubber cushion between the mounting plate 41 and cleaning cloth, has made user in wiping writing on the blackboard
Firmly size can intuitively be judged by the compression degree of sponge when content；The mounting plate 41 is cut with scissors backwards to the side of panel 1
It connects and is provided with finger ring 43；One of finger is tipped in finger ring 43 when using the blackboard eraser 4, remaining finger resists mounting plate 41
Erasing operation can be carried out, the mode of blackboard eraser side can be pinched in this way to avoid traditional, to avoid nail when pressing blackboard eraser
The harshness issued with 1 mantle friction of panel, significantly improves the usage comfort of blackboard eraser, and by finger ring when firmly wiping
For holding, side is more difficult to slip out of the hand 43 stationary phase.
Circumferentially spaced-apart setting fluted 431 around the finger ring 43；431 shape of groove and finger fingertip cooperate, can
So that finger fastens mounting plate 41, the hand-held soundness of blackboard eraser is further increased.
The above is only the preferred embodiment of the utility model, it should be pointed out that: for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (4)
1. a kind of writing projects dual-purpose instructional device, it is characterised in that: including panel (1)；The panel (1) is along length side
To wherein one end storehouse box (2) are installed；Rotation axis and projection screen (22) are provided in the storehouse box (2)；The projection screen
Cloth (22) one ends wound is arranged on the rotating shaft, and the other end, which extends outwardly from storehouse box (2) towards the side of panel (1), is covered on exhibition
Plate (1) surface；The panel (1) is slided along the vertical direction far from the side of storehouse box (2) and is provided with expansion board (11).
2. a kind of writing according to claim 1 projects dual-purpose instructional device, it is characterised in that: panel (1) bottom
It is provided with erasing apparatus (3)；The erasing apparatus (3) includes roller bearing (31), brush body (32) and backboard (33)；The roller bearing (31)
It is mounted on the side of backboard (33) towards panel (1)；The brush body (32) is fixed at roller bearing (31) length direction two sides；Institute
Roller bearing (31) are stated by magnetization treatment；Side fitting of the panel (1) backwards to erasing apparatus (3) is provided with steel stiffening plate.
3. a kind of writing according to claim 2 projects dual-purpose instructional device, it is characterised in that: the erasing apparatus (3)
Blackboard eraser (4) are embedded with backwards to the side of panel (1)；The blackboard eraser (4) includes mounting plate (41)；The mounting plate (41) is towards exhibition
The side cladding of plate (1) is provided with cleaning cloth；Foam-rubber cushion has been filled between the mounting plate (41) and cleaning cloth；The peace
Loading board (41) is hingedly provided with finger ring (43) backwards to the side of panel (1).
4. a kind of writing according to claim 3 projects dual-purpose instructional device, it is characterised in that: around the finger ring (43)
Circumferentially spaced-apart setting fluted (431)；Groove (431) shape and finger fingertip cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820960479.7U CN209028854U (en) | 2018-06-21 | 2018-06-21 | A kind of dual-purpose instructional device of writing projection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820960479.7U CN209028854U (en) | 2018-06-21 | 2018-06-21 | A kind of dual-purpose instructional device of writing projection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209028854U true CN209028854U (en) | 2019-06-25 |
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ID=66868287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820960479.7U Active CN209028854U (en) | 2018-06-21 | 2018-06-21 | A kind of dual-purpose instructional device of writing projection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209028854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843389A (en) * | 2019-12-20 | 2020-02-28 | 杨兴雨 | Automatic regulating closed blackboard eraser device |
-
2018
- 2018-06-21 CN CN201820960479.7U patent/CN209028854U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843389A (en) * | 2019-12-20 | 2020-02-28 | 杨兴雨 | Automatic regulating closed blackboard eraser device |
| CN110843389B (en) * | 2019-12-20 | 2021-11-02 | 浙江深奥科技有限公司 | Automatic regulating closed blackboard eraser device |
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