CN202782342U - Expansion blackboard - Google Patents

Expansion blackboard Download PDF

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Publication number
CN202782342U
CN202782342U CN 201220334446 CN201220334446U CN202782342U CN 202782342 U CN202782342 U CN 202782342U CN 201220334446 CN201220334446 CN 201220334446 CN 201220334446 U CN201220334446 U CN 201220334446U CN 202782342 U CN202782342 U CN 202782342U
Authority
CN
China
Prior art keywords
winding shaft
blackboard
curtain
writing
scroll
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.)
Expired - Fee Related
Application number
CN 201220334446
Other languages
Chinese (zh)
Inventor
侯圣春
Original Assignee
侯圣春
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 侯圣春 filed Critical 侯圣春
Priority to CN 201220334446 priority Critical patent/CN202782342U/en
Application granted granted Critical
Publication of CN202782342U publication Critical patent/CN202782342U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an expansion blackboard, and belongs to teaching tools. The expansion blackboard comprises a blackboard body which comprises a support plate, an upper scroll, a lower scroll and a writing curtain. The upper scroll and the lower scroll are respectively placed at the upper end and the lower end of the support plate. One end of the writing curtain is wound on the upper scroll and fixedly connected with the upper scroll at the end of the writing curtain. The other end of the writing curtain is wound on the lower scroll and fixedly connected with the lower scroll at the end of the writing curtain. One end of the upper scroll is connected with an output end of a motor through a gear transmission mechanism, and the upper scroll and the lower scroll are connected through a transmission chain. According to the extension blackboard, the capacity of the blackboard is greatly expanded, and accordingly a teacher can lecture and students can study conveniently.

Description

The dilatation blackboard
Technical field
The utility model relates to a kind of teaching aid, specifically a kind of dilatation blackboard.
Background technology
At present, carry out teaching and all be unable to do without blackboard, existing blackboard is the fixing flat board of a block size, after the word on the blackboard is write completely, want to continue to write and to wipe a part to existing writing, very important content also is forced to wipe in some cases, is unfavorable for student's study, causes teaching efficiency to descend.
Summary of the invention
The purpose of this utility model is to provide a kind of dilatation blackboard, and capacity expands this blackboard greatly under the prerequisite that takes up room not increasing, and is conducive to the carrying out of teaching.
The technical scheme in the invention for solving the technical problem is:
The dilatation blackboard, comprise the blackboard body, described blackboard body comprises gripper shoe, upper winding shaft, lower winding shaft and writes curtain, described upper winding shaft and lower winding shaft lay respectively at the top and bottom of gripper shoe, described curtain one end of writing is wrapped on the upper winding shaft and in the end and is fixedly connected with upper winding shaft, and the other end of writing curtain is wrapped on the lower winding shaft and in the end and is fixedly connected with lower winding shaft; One end of upper winding shaft is connected by the output shaft of gear drive with a motor, is connected by driving-chain between upper winding shaft and the lower winding shaft.
The described outside of writing curtain is provided with a hairbrush, and the length of described hairbrush is not less than the width of writing curtain, and the both sides of hairbrush and described gripper shoe form and are flexibly connected.
The beneficial effects of the utility model are:
1, traditional blackboard panel is changed into writes curtain, write to roll and to discharge without the curtain of writing after curtain is write completely and continue to use, greatly expanded the capacity of blackboard, the content on the blackboard is wiped after can recording for the student again, improves teaching efficiency.
2, be provided with length and be not less than the hairbrush of writing the curtain width, hairbrush can play the effect that cleaning is write curtain, has greatly improved cleaning efficiency, has alleviated the workload that erases the board.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1 gripper shoe, 2 upper winding shafts, 3 lower winding shafts, 4 write curtain, 5 hairbrush, 6 driving-chains, 7 motors.
The specific embodiment
As shown in Figure 1.The dilatation blackboard, comprise the blackboard body, described blackboard body comprises gripper shoe 1, upper winding shaft 2, lower winding shaft 3 and writes curtain 4, described upper winding shaft 2 and lower winding shaft 3 lay respectively at the top and bottom of gripper shoe 1, described curtain 4 one ends of writing are wrapped on the upper winding shaft 2 and in the end and are fixedly connected with upper winding shaft 2, and the other end of writing curtain 4 is wrapped on the lower winding shaft 3 and in the end and is fixedly connected with lower winding shaft 3; One end of upper winding shaft 2 is connected by the output shaft of gear drive with a motor 7, is connected by driving-chain 6 between upper winding shaft 2 and the lower winding shaft 3.
The described outside of writing curtain 4 is provided with a hairbrush 5, and the length of described hairbrush 5 is not less than the width of writing curtain 4, and hairbrush 5 forms flexible connection with the both sides of described gripper shoe 1.
During use, write writing curtain 4, with write part that curtain 4 is exposed on the external write full after, starter motor 7, the output shaft of motor 7 drives upper winding shaft 2 rotations, upper winding shaft 2 drives lower winding shafts 3 rotations by driving-chain 6, the part of writing full word can be rolled to discharge simultaneously untapped part and continue to write for people, has greatly expanded the capacity of blackboard.Hairbrush 5 can play the effect that cleaning is write curtain 4 in addition, has greatly improved cleaning efficiency, has alleviated the workload that erases the board.

Claims (2)

1. dilatation blackboard, comprise the blackboard body, it is characterized in that, described blackboard body comprises gripper shoe, upper winding shaft, lower winding shaft and writes curtain, described upper winding shaft and lower winding shaft lay respectively at the top and bottom of gripper shoe, described curtain one end of writing is wrapped on the upper winding shaft and in the end and is fixedly connected with upper winding shaft, and the other end of writing curtain is wrapped on the lower winding shaft and in the end and is fixedly connected with lower winding shaft; One end of upper winding shaft is connected by the output shaft of gear drive with a motor, is connected by driving-chain between upper winding shaft and the lower winding shaft.
2. dilatation blackboard according to claim 1 is characterized in that, the described outside of writing curtain is provided with a hairbrush, and the length of described hairbrush is not less than the width of writing curtain, and the both sides of hairbrush and described gripper shoe form and are flexibly connected.
CN 201220334446 2012-07-12 2012-07-12 Expansion blackboard Expired - Fee Related CN202782342U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220334446 CN202782342U (en) 2012-07-12 2012-07-12 Expansion blackboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220334446 CN202782342U (en) 2012-07-12 2012-07-12 Expansion blackboard

Publications (1)

Publication Number Publication Date
CN202782342U true CN202782342U (en) 2013-03-13

Family

ID=47809666

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220334446 Expired - Fee Related CN202782342U (en) 2012-07-12 2012-07-12 Expansion blackboard

Country Status (1)

Country Link
CN (1) CN202782342U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102774182A (en) * 2012-07-12 2012-11-14 侯圣春 Capacity expanding blackboard
CN104290506A (en) * 2014-10-15 2015-01-21 丁玉清 Novel automatic cleaning blackboard
CN104669868A (en) * 2015-02-06 2015-06-03 刘志彬 Novel dust-free blackboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102774182A (en) * 2012-07-12 2012-11-14 侯圣春 Capacity expanding blackboard
CN104290506A (en) * 2014-10-15 2015-01-21 丁玉清 Novel automatic cleaning blackboard
CN104669868A (en) * 2015-02-06 2015-06-03 刘志彬 Novel dust-free blackboard

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130313

Termination date: 20130712