CN201257846Y - Movable composite blackboard with post projection curtain - Google Patents

Movable composite blackboard with post projection curtain Download PDF

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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
Application number
CNU200820099540XU
Other languages
Chinese (zh)
Inventor
谢宏志
Original Assignee
谢宏志
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 谢宏志 filed Critical 谢宏志
Priority to CNU200820099540XU priority Critical patent/CN201257846Y/en
Application granted granted Critical
Publication of CN201257846Y publication Critical patent/CN201257846Y/en

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Abstract

The embodiment of the utility model relates to teaching aids. The utility model provides a movably combined blackboard with a rear mounted projecting screen. Because a screen frame is arranged on the blackboard, the movable board frame can be used for writing and hanging the screen through the sliding of the movable board frame, the functions of the blackboard and the screen can be served simultaneously, the additional screen equipment is not required, the cost is low, the movable board frame can slide left and right, and the internal movable blackboard can slide up and down. Therefore, the utility model has the advantages of convenient and flexible use.

Description

The movable combined blackboard of rearmounted projection screen

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)

1, the movable combined blackboard of a kind of rearmounted projection screen, it is characterized in that, 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.
2, the movable combined blackboard of rearmounted projection screen as claimed in claim 1 is characterized in that the lower edge protrusion direction of described fixing big frame is provided with chalk dust fishplate bar or chalk dust access slot.
3, the movable combined blackboard of rearmounted projection screen as claimed in claim 1 is characterized in that, described movable sheet frame places the fixedly front of sheet frame and curtain frame.
4, the movable combined blackboard of rearmounted projection screen as claimed in claim 1 is characterized in that 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.
5, the movable combined blackboard of rearmounted projection screen as claimed in claim 1, it is characterized in that, described movable sheet frame comprises the 3rd Reelable blackboard, the 4th Reelable blackboard, and the second traction flexible cord that the 3rd pulley, 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.
CNU200820099540XU 2008-07-25 2008-07-25 Movable composite blackboard with post projection curtain CN201257846Y (en)

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

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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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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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

C17 Cessation of patent right