CN203752742U - Double-layer folding blackboard - Google Patents
Double-layer folding blackboard Download PDFInfo
- Publication number
- CN203752742U CN203752742U CN201420099412.0U CN201420099412U CN203752742U CN 203752742 U CN203752742 U CN 203752742U CN 201420099412 U CN201420099412 U CN 201420099412U CN 203752742 U CN203752742 U CN 203752742U
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- CN
- China
- Prior art keywords
- blackboard
- auxiliary
- main
- group
- hinge
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- 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
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Abstract
The utility model discloses a double-layer folding blackboard and belongs to the field of teaching aids. Through the double-layer folding blackboard, writing space can be increased. The double-layer folding blackboard comprises a main blackboard and at least one auxiliary blackboard set, wherein each auxiliary blackboard set comprises two auxiliary blackboards and at least one set of U-shaped hinges; the two auxiliary blackboards are hinged to the main blackboard through the U-shaped hinges, and then each auxiliary blackboard can be turned over from 0 degree to 180 degrees; the two auxiliary blackboards can be folded together or spread out respectively for writing; the obverse side and the reverse side of each auxiliary blackboard can both provide writing areas, and on the condition of not affecting the writing area of the original main blackboard, the total writing area is greatly increased through the writing areas provided by the auxiliary blackboards. The auxiliary blackboard set is simple in structure, convenient to install and capable of being directly installed on the basis of the original blackboard.
Description
Technical field
The utility model relates to teaching equipment field, especially a kind of double-layer folding formula blackboard.
Background technology
In teaching now, blackboard is a kind of teaching equipment being in daily use, and is the carrier that knowledge point, analysis, calculating are lectured in teacher's writing on the blackboard, is the platform that student creates some extracurricular activities, account, the memory of special knowledge point, very important at teaching process.Traditional blackboard, because its amount of space is limited, teacher needs continuous blackboard wiping in the process of teaching, and has taken the time of lecturing; Simultaneously some need to be stored in special knowledge point on blackboard, prompting, account, analysis etc. and need to take the space of a part of blackboard for a long time, making to remain available blackboard space reduces, and in the time that wiping remains the content in available blackboard space, wish that the content retaining is also likely wiped out because of carelessness, make troubles to teaching, teachers and students' interchange and study.
Utility model content
The technical problem that the utility model solves is to provide a kind of double-layer folding formula blackboard that can increase blackboard writing space.
The utility model solves the technical scheme that its technical problem adopts: double-layer folding formula blackboard, comprise main blackboard, and also comprise at least a set of auxiliary blackboard group, described auxiliary blackboard group is arranged on the side of main blackboard; The auxiliary blackboard group of every suit comprises two auxiliary blackboards, and at least one group of U-shaped hinge; Each group U-shaped hinge comprises a main hinge and two secondary hinges and two pins; Main hinge is fixedly mounted on the front of main blackboard, has two hinged ends on main hinge; Two secondary hinges are fixedly mounted on respectively on auxiliary blackboard, and respectively secondary hinge are hinged on the hinged end of main hinge by pin.
Further: the auxiliary blackboard group of every suit comprises three groups of U-shaped hinges, and the installation site of three groups of U-shaped hinges is evenly distributed.
Further: be respectively arranged with a set of auxiliary blackboard group in the left and right sides of main blackboard.
The beneficial effects of the utility model are: at least one side at main blackboard increases a set of auxiliary blackboard group, and the auxiliary blackboard group of every cover comprises two auxiliary blackboards, pass through again U-shaped hinge by hinged to two auxiliary blackboards and main blackboard, the upset that makes every auxiliary blackboard can realize 0 ° to 180 °; Two auxiliary blackboards can be realized and being folded by upset, or after launching respectively for writing, the positive and negative of every auxiliary blackboard can provide and write space simultaneously; Realize in the situation that not affecting original main blackboard writing space, the space of writing providing by auxiliary blackboard makes totally to write space and greatly increases, auxiliary blackboard can also be used as writing emphasis knowledge, main blackboard is write for common, and the emphasis knowledge on auxiliary like this blackboard is just not easy to be wiped out because of carelessness.Further, a set of auxiliary blackboard group can be set respectively in the left and right sides of main blackboard, can make so totally can write space and further increase.
Brief description of the drawings
Fig. 1 is the total structural representation sketch of double-layer folding formula blackboard described in the utility model;
Fig. 2 is the partial enlarged drawing within the scope of the circle of mark A indication in Fig. 1;
Fig. 3 is the structural representation sketch of main hinge in the utility model;
Fig. 4 is the structural representation sketch of secondary hinge in the utility model;
Fig. 5 is the structural representation sketch of pin in the utility model;
In figure, be labeled as: main blackboard 1; Auxiliary blackboard group 2; Auxiliary blackboard 21,22; Main hinge 3; Hinged end 31,32; Secondary hinge 4,41,42; Pin 5,51,52.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated, but the technical scheme that the utility model is protected is not limited in the following stated embodiment.
As shown in Figures 1 to 5, double-layer folding formula blackboard described in the utility model, comprises main blackboard 1, also comprises at least a set of auxiliary blackboard group 2, and described auxiliary blackboard group 2 is arranged on the side of main blackboard 1; The auxiliary blackboard group 2 of every suit comprises two auxiliary blackboards 21,22, and at least one group of U-shaped hinge; Each group U-shaped hinge comprises a main hinge 3 and two secondary hinges 41,42 and two pins 51,52; Main hinge 3 is fixedly mounted on the front of main blackboard 1, on main hinge 3, there are two hinged ends 31,32, two secondary hinges 41,42 are fixedly mounted on respectively on auxiliary blackboard 21,22, and respectively secondary hinge 41,42 are hinged on the hinged end 31,32 of main hinge 3 by pin 51,52.Auxiliary blackboard group 2 can be arranged on left side and the right side of main blackboard 1, in the time only having one group of auxiliary blackboard group 2, can select to be arranged on according to actual conditions left side or the right side of main blackboard 1, a set of auxiliary blackboard group 2 can certainly be set respectively in the left and right sides of main blackboard 1, the auxiliary blackboard group 2 of the left and right sides is symmetrical structure, now, total auxiliary blackboard quantity reaches four.
Install by adopting special U-shaped hinge, the main hinge 3 of this U-shaped hinge takes the shape of the letter U, and there are two hinged ends 31, 32, make two auxiliary blackboards 21 can be installed on one group of hinge, 22, and every auxiliary blackboard 21, 22 can realize the upset of 0 ° to 180 °, every auxiliary blackboard 21, 22 adopt two-sided design, be that its tow sides can provide and write space, after 0 ° to 180 °, can make auxiliary blackboard 21 like this, positive and negative two faces of 22 can be presented on front, write, by to auxiliary blackboard 21, 22 upset, can not affect the use of original main blackboard 1 completely.The space that finally can be used for writing comprises the obverse and reverse of the front of main blackboard 1, auxiliary blackboard 21, the obverse and reverse of auxiliary blackboard 22, and therefore making to write space increases greatly.
It is positive upper that main hinge 3 preferably adopts screw to be fixedly mounted on main blackboard 1 conventionally, and two secondary hinges 41,42 also preferably adopt screw to be fixedly mounted on respectively on auxiliary blackboard 21,22.
The auxiliary blackboard group 2 of every suit can preferably adopt three groups of U-shaped hinges to install, three groups of U-shaped hinges are installed a U-shaped hinge at interval of certain distance in position, three groups of U-shaped hinges are distributed roughly even, like this can be more firm, certainly can adopt the U-shaped hinge of two or more to install.
The utility model is simple in structure, and cost is lower, and can directly on the basis of existing blackboard, install, and does not need existing blackboard to carry out multiprocessing.
Claims (3)
1. double-layer folding formula blackboard, comprises main blackboard (1), it is characterized in that: also comprise at least a set of auxiliary blackboard group (2), described auxiliary blackboard group (2) is arranged on the side of main blackboard (1); The auxiliary blackboard group (2) of every suit comprises two auxiliary blackboards (21,22), and at least one group of U-shaped hinge; Each group U-shaped hinge comprises a main hinge (3) and two secondary hinges (41,42) and two pins (51,52); Main hinge (3) is fixedly mounted on the front of main blackboard (1), has two hinged ends (31,32) on main hinge (3); It is upper that two secondary hinges (41,42) are fixedly mounted on respectively auxiliary blackboard (21,22), and respectively secondary hinge (41,42) is hinged on the hinged end (31,32) of main hinge (3) by pin (51,52).
2. double-layer folding formula blackboard as claimed in claim 1, is characterized in that: the auxiliary blackboard group (2) of every suit comprises three groups of U-shaped hinges, and the installation site of three groups of U-shaped hinges is evenly distributed.
3. double-layer folding formula blackboard as claimed in claim 1 or 2, is characterized in that: be respectively arranged with a set of auxiliary blackboard group (2) in the left and right sides of main blackboard (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420099412.0U CN203752742U (en) | 2014-03-06 | 2014-03-06 | Double-layer folding blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420099412.0U CN203752742U (en) | 2014-03-06 | 2014-03-06 | Double-layer folding blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203752742U true CN203752742U (en) | 2014-08-06 |
Family
ID=51248048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420099412.0U Expired - Fee Related CN203752742U (en) | 2014-03-06 | 2014-03-06 | Double-layer folding blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203752742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799388A (en) * | 2016-05-13 | 2016-07-27 | 安庆师范学院 | Black board and white board selectable double-purpose device |
| CN105799387A (en) * | 2016-05-13 | 2016-07-27 | 安庆师范学院 | Novel dual-purpose device with black board and white board selectable |
| CN108859511A (en) * | 2018-06-12 | 2018-11-23 | 贾石硕 | A kind of turnover type dust-separation blackboard |
-
2014
- 2014-03-06 CN CN201420099412.0U patent/CN203752742U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799388A (en) * | 2016-05-13 | 2016-07-27 | 安庆师范学院 | Black board and white board selectable double-purpose device |
| CN105799387A (en) * | 2016-05-13 | 2016-07-27 | 安庆师范学院 | Novel dual-purpose device with black board and white board selectable |
| CN108859511A (en) * | 2018-06-12 | 2018-11-23 | 贾石硕 | A kind of turnover type dust-separation blackboard |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20170306 |