CN204009339U - A kind of sliding multimedia overhead projector cloth - Google Patents
A kind of sliding multimedia overhead projector cloth Download PDFInfo
- Publication number
- CN204009339U CN204009339U CN201420394666.5U CN201420394666U CN204009339U CN 204009339 U CN204009339 U CN 204009339U CN 201420394666 U CN201420394666 U CN 201420394666U CN 204009339 U CN204009339 U CN 204009339U
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- China
- Prior art keywords
- projection cloth
- cloth
- unfolding
- traction rope
- projection
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Abstract
The utility model discloses a kind of sliding multimedia overhead projector cloth, comprise projection cloth, projection cloth is arranged at blackboard front side, described projection cloth one end is fixedly installed blackboard left side or right side, projection cloth one end is provided with projection cloth pull bar, opposite side is provided with for projection cloth folding and unfolding haulage gear, together with two kinds of Function Integration Mechanisms of the manual folding and unfolding of projection cloth and automatic deploying and retracting, both can be by having pulled manually projection cloth pull bar to realize the horizontal folding and unfolding quickly and easily of projection cloth, also can be under the effect of the motor switching on power, by traction wheel, rotate the motion that drives traction rope, thereby the left end of projection cloth is moved.The utility model solves the existing operation inconvenient problem with use that is applied to the multimedia overhead projector cloth of teaching, project organization is rationally distributed, the retraction and use of projection cloth energy more convenient and quicker, hardware is easier to safeguard, also for teacher can more conveniently utilize the blackboard of gear after projection cloth more fully.
Description
Technical field
The utility model belongs to teaching equipment field, specifically belongs to a kind of sliding multimedia overhead projector cloth that is applied to multimedia teaching.
Background technology
In daily teaching activity, because multimedia teaching is because having the advantage such as contain much information, easy to use, become one of main teaching means at present, a lot of schools have all installed multimedia teaching facility.The projection screen installation of can tiling when classroom width is larger, but when classroom limited space is processed, projecting apparatus screen just can only cover on blackboard and install.And more projecting apparatus screen adopts Scroll to launch and reclaims, when in the process of attending class, teacher needs writing on the blackboard, owing to frequently closing projector, be unfavorable for hardware maintenance, screen reclaims also needs the time, so in most of situation, teacher can only utilize half block blackboard explanation writing on the blackboard, and the blackboard of gear after projection cloth can not be fully utilized.Although be conducive to teaching by the projecting figure on projection cloth in conjunction with writing on the blackboard explanation, but in some cases, teacher needs a large amount of writing on the blackboard spaces, need again student to be absorbed in the content on blackboard, and painted projection screen is when open, also can affect to a certain extent student's focus, but close projector, projection cloth is regained and not to be easily and to need the regular hour.Existing screen is opened up debit's formula mechanism and is easily damaged, and safeguards inconvenience, and when the drive unit of projection cloth damages, projection cloth just can not continue to use again, and the projection cloth of existing teaching use can not be realized manual folding and unfolding.As invent a kind of hardware device simple, be easy to safeguard, both can manual operation also can automatic deploying and retracting and shorter multimedia overhead projector cloth of folding and unfolding time, will have great practical value.
Utility model content
The purpose of this utility model has been to provide a kind of sliding multimedia overhead projector cloth, solve the existing operation inconvenient problem with use that is applied to the multimedia overhead projector cloth of teaching, project organization is rationally distributed, the retraction and use of projection cloth energy more convenient and quicker, hardware is easier to safeguard, also for teacher can more conveniently utilize the blackboard of gear after projection cloth more fully.
The technical solution adopted in the utility model is as follows:
A kind of sliding multimedia overhead projector cloth, comprise projection cloth, projection cloth is arranged at blackboard front side, described projection cloth one end is fixedly installed blackboard left side or right side, projection cloth one end is provided with projection cloth pull bar, opposite side is provided with for projection cloth folding and unfolding haulage gear, together with two kinds of Function Integration Mechanisms of the manual folding and unfolding of projection cloth and automatic deploying and retracting, both can be by having pulled manually projection cloth pull bar to realize the horizontal folding and unfolding quickly and easily of projection cloth, also can be under the effect of the motor switching on power, by traction wheel, rotate the motion that drives traction rope, thereby the left end of projection cloth is moved.
In the left and right of described projection cloth, end is equipped with angle iron support, left end support is provided with pulley, right-hand member support is provided with folding and unfolding haulage gear, and the left end of traction rope is on pulley, and right-hand member is connected in folding and unfolding haulage gear, below traction rope, be provided with wire rope, on projection cloth, have symmetrical hole, on hole, by combined connection component, be hung on wire rope, traction rope is through combined connection component, combined connection component is fixed on a bit on traction rope, and projection cloth moves and carries out folding and unfolding with traction rope.
Described folding and unfolding haulage gear comprises traction wheel, motor and pinion wheel, wherein traction wheel, motor and pinion wheel are mounted on same plane, pinion wheel is meshed with the gear on traction wheel, in the traction rope outside near traction wheel, be provided with a pair of traction rope position-limited wheel by traction rope to third side to compression, increase the contact area of traction rope and traction wheel, after electric machine rotation, pinion wheel can drive traction wheel to rotate, thereby drives traction rope to rotate.
Described combined connection component, comprise hook, lower draw-bar, jump ring and hook connecting fitting, upper hook and lower draw-bar are arranged at respectively hook connecting fitting upper and lower side, the external diameter of jump ring is greater than the internal diameter of hook connecting fitting, upper hook inserts the hole of hook connecting fitting, by being connected on hook connecting fitting in jump ring and upper pocket for the punch head, described hook connecting fitting is provided with tight fixed bolt, for fixing between hook connecting fitting and wire rope.
Described projection cloth left end side is provided with dust cover.
Compared with the prior art, the beneficial effects of the utility model are as follows:
The utility model both can be by having pulled projection cloth pull bar to realize the horizontal folding and unfolding quickly and easily of projection cloth manually, also can be under the effect of the motor switching on power, by traction wheel, rotate the motion that drives traction rope, thereby realize the quick side-to-side movement of left end and the folding and unfolding of projection cloth.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model multimedia overhead projector cloth;
Fig. 2 is the scheme of installation of the utility model haulage gear and projection cloth;
Fig. 3 is the scheme of installation of the utility model projection cloth and wire rope, projection cloth set collar;
Fig. 4 is the scheme of installation of the utility model projection cloth left end and traction rope;
Fig. 5 is the installation enlarged diagram in the utility model projection cloth left end hole;
Fig. 6 is the external structure schematic diagram of the utility model haulage gear;
Fig. 7 is the partial sectional view of Figure 1A-A;
Fig. 8 is the zoomed-in view of the utility model haulage gear top view;
Fig. 9 is the partial sectional view of Figure 1B-B;
Figure 10 is the zoomed-in view of the utility model haulage gear right view.
Number in the figure: 1-blackboard, 2-projection cloth pull bar, 3-projection cloth, 4-projection cloth dust cover, 5-projection cloth set collar, 6-traction rope, 7-wire rope, 8-haulage gear base, 9-motor support base, 10-angle iron support, 11-power supply box, 12-power switch, the positive and negative switch of 13-, 14-pin, 15-pulley, the upper hook of 16-, 17-hook connecting fitting, 18-tight fixed bolt, 19-lower draw-bar, 20-jump ring, 21-traction rope position-limited wheel, 22-traction wheel, 23-motor, 24-motor support base erection bolt, 25-wall, 26-pinion wheel.
Below in conjunction with accompanying drawing, pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Shown in Figure 1, a kind of sliding multimedia overhead projector cloth, mainly comprises blackboard 1, projection cloth pull bar 2, projection cloth 3, projection cloth dust cover 4.Can pull projection cloth pull bar 2 to realize the folding and unfolding of projection cloth 3 by manual left and right, when projection cloth 3 used time not, can be recovered in projection cloth dust cover 4, thereby guarantee that projection cloth 3 can not be stained with dust and damage.
Shown in Figure 2, by right-hand member hole and the angle iron support 10 through projection cloth 3 is fixed together with projection cloth set collar 5, prevent that the right-hand member of projection cloth 3 from moving left and right.Motor support base 9 is arranged on haulage gear base 8, and the electric system of the haulage gear of power supply box 11 controlling projection cloth 3 is pressed power switch 12 and switched on power, and the counterclockwise or positive and negative switch 13 that turns clockwise can be realized projection cloth 3 left ends and launches and regain.
Shown in Figure 3, between the hole of projection cloth 3 and the wire rope 7 being fixed between symmetrical two angle iron supports 10, by projection cloth set collar 5, be connected, guarantee that when projection cloth 3 launches be a plane.When projection cloth 3 left ends move left and right, projection cloth set collar 5 can be followed projection cloth 3 and be horizontally slipped on wire rope 7.
Shown in Figure 4, by pin 14, pulley 10 is arranged on angle iron support 10, the left end of traction rope 6 is on pulley 15, upper hook 16 is through the hole of projection cloth 3 high order ends, lower draw-bar 19 is hooked on wire rope 7, upper hook 16 and lower draw-bar 19 are combined by hook connecting fitting 17, traction rope 6 is through the hole of hook connecting fitting 17, by screwing the tight fixed bolt 18 being arranged on hook connecting fitting 17, compress traction rope 6, prevent from sliding in the hole of traction rope 6 in hook connecting fitting 17, by rotating traction rope 6, just can make upper hook 16, hook connecting fitting 17, tight fixed bolt 18, together with the hole of lower draw-bar 19 and projection cloth 3 left ends, follow movement, realize the folding and unfolding of projection cloth 3.
Shown in Figure 5, the external diameter of jump ring 20 is greater than the internal diameter of hook connecting fitting 17, upper hook 16 is inserted behind the hole of hook connecting fitting 17, again jump ring 20 is arranged in the groove of hook 16 from the side of hook connecting fitting 17, upper hook 16 can be around 17 rotations of hook connecting fitting, to prevent that upper hook 16 from departing from hook connecting fitting 17, upper hook 16, jump ring 20, hook connecting fitting 17, tight fixed bolt 18 and lower draw-bar 19 are installed and have been formed a subassembly, by being a bit fixed together on the hole of projection cloth 3 left ends and traction rope 6.
Shown in Figure 6, traction rope position-limited wheel 21, traction wheel 22, motor 23, motor support base 9 are all arranged on haulage gear base 8, and traction rope 6 right-hand members are on traction wheel 22, and traction wheel 22 rotates and can drive traction rope 6 to move.
Hole shown in Figure 7, the traction rope 6 on traction wheel 22 passes in angle iron support 10.
Shown in Figure 8, traction rope position-limited wheel 21 to third side to compression, increases the contact area of traction rope 6 and traction wheel 22 by traction rope 6, makes traction wheel 22 can drive traction rope 6 to move.
Shown in Figure 9, traction wheel 22, motor 23, pinion wheel 26 are mounted on same plane, and motor 23 is arranged on motor support base 9, and pinion wheel 26 is meshed with the gear on traction wheel 22.
Shown in Figure 10, traction wheel 22 is arranged on haulage gear base 8 by pin 13, and pinion wheel 26 is arranged on motor 23 on axle, and after motor 23 rotates, pinion wheel 26 can drive traction wheel 22 to rotate, thereby drives traction rope 6 to rotate.
Claims (5)
1. a sliding multimedia overhead projector cloth, comprise projection cloth, projection cloth is arranged at blackboard front side, it is characterized in that: described projection cloth one end is fixedly installed blackboard left side or right side, projection cloth one end is provided with projection cloth pull bar, and opposite side is provided with for projection cloth folding and unfolding haulage gear.
2. a kind of sliding multimedia overhead projector cloth according to claim 1, it is characterized in that: in the left and right of described projection cloth, end is equipped with angle iron support, left end support is provided with pulley, right-hand member support is provided with folding and unfolding haulage gear, the left end of traction rope is on pulley, right-hand member is connected in folding and unfolding haulage gear, below traction rope, be provided with wire rope, on projection cloth, have symmetrical hole, on hole, by combined connection component, be hung on wire rope, traction rope is through combined connection component, combined connection component is fixed on a bit on traction rope, projection cloth moves and carries out folding and unfolding with traction rope.
3. a kind of sliding multimedia overhead projector cloth according to claim 1, it is characterized in that: described folding and unfolding haulage gear comprises traction wheel, motor and pinion wheel, wherein traction wheel, motor and pinion wheel are mounted on same plane, pinion wheel is meshed with the gear on traction wheel, in the traction rope outside near traction wheel, be provided with a pair of traction rope position-limited wheel by traction rope to third side to compression.
4. a kind of sliding multimedia overhead projector cloth according to claim 2, it is characterized in that: described combined connection component, comprise hook, lower draw-bar, jump ring and hook connecting fitting, upper hook and lower draw-bar are arranged at respectively hook connecting fitting upper and lower side, the external diameter of jump ring is greater than the internal diameter of hook connecting fitting, upper hook inserts the hole of hook connecting fitting, by being connected on hook connecting fitting in jump ring and upper pocket for the punch head, described hook connecting fitting is provided with tight fixed bolt, for fixing between hook connecting fitting and wire rope.
5. a kind of sliding multimedia overhead projector cloth according to claim 1, is characterized in that: described projection cloth left end side is provided with dust cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394666.5U CN204009339U (en) | 2014-07-16 | 2014-07-16 | A kind of sliding multimedia overhead projector cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394666.5U CN204009339U (en) | 2014-07-16 | 2014-07-16 | A kind of sliding multimedia overhead projector cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204009339U true CN204009339U (en) | 2014-12-10 |
Family
ID=52049315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420394666.5U Expired - Fee Related CN204009339U (en) | 2014-07-16 | 2014-07-16 | A kind of sliding multimedia overhead projector cloth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204009339U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023684A (en) * | 2016-08-08 | 2016-10-12 | 成都锦泰铂锐科技有限公司 | Projector white board with voice broadcasting function |
| CN106125485A (en) * | 2016-07-19 | 2016-11-16 | 柳州六品科技有限公司 | A kind of pressure-controlled automatic projection curtain |
| CN107180562A (en) * | 2017-06-07 | 2017-09-19 | 林艺芃 | Projection teaching's device is used in high school student's study |
| CN108312743A (en) * | 2018-04-24 | 2018-07-24 | 任沐华 | A kind of compound adjustable blackboard |
| CN109480538A (en) * | 2018-11-19 | 2019-03-19 | 哈尔滨学院 | A kind of preschool education system based on AR augmented reality |
| CN110680122A (en) * | 2019-10-11 | 2020-01-14 | 黄国洋 | Device capable of automatically sliding out to display printing and dyeing cloth |
-
2014
- 2014-07-16 CN CN201420394666.5U patent/CN204009339U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125485A (en) * | 2016-07-19 | 2016-11-16 | 柳州六品科技有限公司 | A kind of pressure-controlled automatic projection curtain |
| CN106023684A (en) * | 2016-08-08 | 2016-10-12 | 成都锦泰铂锐科技有限公司 | Projector white board with voice broadcasting function |
| CN107180562A (en) * | 2017-06-07 | 2017-09-19 | 林艺芃 | Projection teaching's device is used in high school student's study |
| CN107180562B (en) * | 2017-06-07 | 2019-02-12 | 林艺芃 | High school student's study projection teaching's device |
| CN108312743A (en) * | 2018-04-24 | 2018-07-24 | 任沐华 | A kind of compound adjustable blackboard |
| CN109480538A (en) * | 2018-11-19 | 2019-03-19 | 哈尔滨学院 | A kind of preschool education system based on AR augmented reality |
| CN109480538B (en) * | 2018-11-19 | 2021-07-27 | 哈尔滨学院 | Preschool education system based on AR augmented reality |
| CN110680122A (en) * | 2019-10-11 | 2020-01-14 | 黄国洋 | Device capable of automatically sliding out to display printing and dyeing cloth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150716 |
|
| EXPY | Termination of patent right or utility model |