CN201257846Y - Movable composite blackboard with post projection curtain - Google Patents
Movable composite blackboard with post projection curtain Download PDFInfo
- Publication number
- CN201257846Y CN201257846Y CNU200820099540XU CN200820099540U CN201257846Y CN 201257846 Y CN201257846 Y CN 201257846Y CN U200820099540X U CNU200820099540X U CN U200820099540XU CN 200820099540 U CN200820099540 U CN 200820099540U CN 201257846 Y CN201257846 Y CN 201257846Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- frame
- movable
- sheet frame
- pulley
- Prior art date
Links
- 239000002131 composite materials Substances 0.000 title 1
- 239000000428 dust Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 1
- 239000002699 waste materials Substances 0.000 description 1
Abstract
Description
Technical field
The utility model relates to a kind of realia, the movable combined blackboard of particularly a kind of multiduty rearmounted projection screen.
Background technology
Present blackboard is no matter be fixedly blackboard or general Reelable blackboard, when putting down projection screen and using, all can cover the blackboard of sheet, and waste blackboard space, an influence part is paid attention to the class people's sight line, the number of times that increase erases the board.General projection screen equipment cost height independently simultaneously, the inconvenient switching neatly between blackboard and projection screen used.
The utility model content
The utility model embodiment provides a kind of rearmounted projection screen movable combined blackboard, to provide a kind of convenient, flexible, the low blackboard of multiduty and cost.
The embodiment of the movable combined blackboard of rearmounted projection screen provided by the utility model is achieved through the following technical solutions:
The movable combined blackboard of a kind of rearmounted projection screen, described blackboard comprises fixing big frame, fixedly sheet frame, curtain frame, movable sheet frame, first Reelable blackboard, second Reelable blackboard, first pulley, second pulley and first draw flexible cord, wherein, comprise fixedly sheet frame and the curtain frame that is used to hang projection usefulness curtain in the described fixing big frame;
The both sides of described fixedly sheet frame upper edge are respectively arranged with first pulley, second pulley, be provided with first Reelable blackboard and second Reelable blackboard that slide up and down in the described fixedly sheet frame, described first Reelable blackboard and second Reelable blackboard be respectively the first traction flexible cord, and slide up and down by described first pulley, second pulley;
The last bottom of described fixing big frame is provided with the push-and-pull pulley guide rails, respectively there is a push-and-pull truckle at four angles of described movable sheet frame, two of tops and following two push-and-pull truckles follow the following push-and-pull pulley guide rails that goes up of fixing big frame to match respectively, can left and right sides push-and-pull in the push-and-pull pulley guide rails of movable sheet frame bottom on fixing big frame.
According to above-mentioned principal character, the lower edge protrusion direction of described fixing big frame is provided with chalk dust fishplate bar or chalk dust access slot.
According to above-mentioned principal character, described movable sheet frame places the fixedly front of sheet frame and curtain frame.
According to above-mentioned principal character, described movable sheet frame is with fixedly sheet frame is identical with curtain frame specification, and movable sheet frame can cover fixedly sheet frame or curtain frame fully.
According to above-mentioned principal character, described movable sheet frame comprises the 3rd Reelable blackboard, the 4th Reelable blackboard, and the second traction flexible cord that the 3rd, the 4th pulley that described the 3rd Reelable blackboard, the 4th Reelable blackboard upper edge by movable sheet frame is provided with and being used to hangs the 3rd Reelable blackboard, the 4th Reelable blackboard slides up and down.
The movable combined blackboard of the rearmounted projection screen that the utility model embodiment provides is owing to be provided with the curtain frame on blackboard, and the slip by movable sheet frame can be write blackboard, also can hang curtain uses, can use the function of blackboard and curtain again simultaneously, and curtain equipment that need not be other, so cost is low and movable sheet frame can horizontally slip, the Reelable blackboard of the inside can slide up and down, and is therefore easy to use flexible.
Description of drawings
The structural representation of the movable combined blackboard of rearmounted projection screen that Fig. 1 provides for the utility model embodiment;
The fixing big frame that Fig. 2 provides for the utility model embodiment and the position construction profile of movable sheet frame;
The Facad structure figure of the movable sheet frame that Fig. 3 provides for the utility model embodiment.
The specific embodiment
In order better to understand the technical solution of the utility model, describe the embodiment that the utility model provides in detail below in conjunction with accompanying drawing.
The structural representation of the movable combined blackboard of rearmounted projection screen that Fig. 1 provides for the utility model embodiment (portable plate is frameed shift and moved centre at fixing big frame); The fixing big frame that Fig. 2 provides for the utility model embodiment and the position construction profile of movable sheet frame; The Facad structure figure of the movable sheet frame that Fig. 3 provides for the utility model embodiment.
Referring to Fig. 1, Fig. 2 and Fig. 3, the movable combined blackboard of this postposition projection screen comprises fixing big frame 1, fixedly sheet frame 3, curtain frame 2, movable sheet frame 12, first Reelable blackboard 4, second Reelable blackboard 5, first pulley, second pulley and first draw flexible cord, wherein, comprise fixedly sheet frame 3 and the curtain frame 2 that is used to hang projection usefulness curtain in the described fixing big frame 1;
The both sides of described fixedly sheet frame 3 upper edges are respectively arranged with first pulley, second pulley, be provided with first Reelable blackboard 4 and second Reelable blackboard 5 that slide up and down in the described fixedly sheet frame 3, described first Reelable blackboard 4 and second Reelable blackboard 5 be respectively the first traction flexible cord, and slide up and down by described first pulley, second pulley;
The last bottom of described fixing big frame 1 is provided with push-and-pull pulley guide rails 10,11, respectively there is a push-and-pull truckle 121 at 12 4 angles of described movable sheet frame, two of tops and following two push-and-pull truckles 121 follow the following push-and-pull pulley guide rails 10,11 that goes up of fixing big frame to match respectively, can left and right sides push-and-pull in the push-and-pull pulley guide rails 10,11 of movable sheet frame 12 bottom on fixing big frame 1.Described movable sheet frame 12 places the fixedly front of sheet frame 3 and curtain frame 2.Described movable sheet frame 12 is with fixedly sheet frame 3 is identical with curtain frame 2 specifications, and movable sheet frame 12 can cover fixedly sheet frame 3 or curtain frame 2 fully.
The lower edge protrusion direction of described fixing big frame 1 also is provided with chalk dust fishplate bar 8.To admit chalk dust easily.This chalk dust fishplate bar 8 also can be set to the groove shape, better admits chalk dust.
Described movable sheet frame 12 comprises the 3rd Reelable blackboard 122, the 4th Reelable blackboard 123, and the second traction flexible cord that the 3rd pulley, the 4th pulley 124 that described the 3rd Reelable blackboard 122, the 4th Reelable blackboard 123 upper edge by movable sheet frame 12 is provided with and being used to hangs the 3rd Reelable blackboard 122, the 4th Reelable blackboard 123 slides up and down.
The movable combined blackboard of the rearmounted projection screen that the utility model embodiment provides is owing to be provided with the curtain frame on blackboard, and the slip by movable sheet frame can be write blackboard, also can hang curtain uses, can use the function of blackboard and curtain again simultaneously, and curtain equipment that need not be other, so cost is low and movable sheet frame can horizontally slip, the Reelable blackboard of the inside can slide up and down, and is therefore easy to use flexible.
More than the movable combined blackboard of a kind of rearmounted projection screen that the utility model embodiment is provided be described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, part in specific embodiments and applications all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820099540XU CN201257846Y (en) | 2008-07-25 | 2008-07-25 | Movable composite blackboard with post projection curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820099540XU CN201257846Y (en) | 2008-07-25 | 2008-07-25 | Movable composite blackboard with post projection curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201257846Y true CN201257846Y (en) | 2009-06-17 |
Family
ID=40772076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820099540XU CN201257846Y (en) | 2008-07-25 | 2008-07-25 | Movable composite blackboard with post projection curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201257846Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376747A (en) * | 2014-11-26 | 2015-02-25 | 崔蕾 | Blackboard with digital terrain teaching demonstration function |
| CN105313547A (en) * | 2014-07-07 | 2016-02-10 | 中国人民解放军军械工程学院 | Variable-track cyclic back projection blackboard |
| CN108215591A (en) * | 2018-01-18 | 2018-06-29 | 郭铁琪 | A kind of speech training board |
| CN108819569A (en) * | 2018-05-03 | 2018-11-16 | 张清清 | A kind of plug-type board of education of novel multifunctional combination |
-
2008
- 2008-07-25 CN CNU200820099540XU patent/CN201257846Y/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105313547A (en) * | 2014-07-07 | 2016-02-10 | 中国人民解放军军械工程学院 | Variable-track cyclic back projection blackboard |
| CN104376747A (en) * | 2014-11-26 | 2015-02-25 | 崔蕾 | Blackboard with digital terrain teaching demonstration function |
| CN108215591A (en) * | 2018-01-18 | 2018-06-29 | 郭铁琪 | A kind of speech training board |
| CN108819569A (en) * | 2018-05-03 | 2018-11-16 | 张清清 | A kind of plug-type board of education of novel multifunctional combination |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20100725 |
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| C17 | Cessation of patent right |