CN2902747Y - Interlayer blackboard - Google Patents

Abstract

The utility model relates to an interlining blackboard, provided with an interlining in the blackboard, uncorked the blackboard from the side, taken the side as the inlet of the interlining, and inserted another small piece of rectangle board into the interlining through the inlet. When in use, people can write on the blackboard normally, while the written area is not large enough, people can draw out the small board to enlarge the blackboard to make it convenient for people to write and watch. The utility model with the advantages of convenience, utility, reasonable structure, and special sculpt, and nimble operation, could change the size of the written area according to the request of the user to ameliorate the teaching circumstance at present.

Description

The interlayer blackboard

Technical field the utility model relates to a kind of teaching aid, especially a kind of interlayer blackboard.

The background technology blackboard is a most important teaching aid in the school, and Faculty and Students impart knowledge to students by writing words on blackboard and learn.But also there are many problems in present blackboard, for example say: the write area of blackboard is fixing immutable, after blackboard panel is all write, can only take the means with the blackboard eraser cleaning, and will cause a part of literal like this by wiping, influence students study easily; And some blackboard is made with the large tracts of land plank, but takies than large space, and inconvenience is laid.In order to solve this class problem, we provide a kind of can change write area, inner generation new blackboard with dissection.

The summary of the invention the purpose of this utility model provides a kind of interlayer blackboard, is used to solve the little problem of normal blackboard write area.

For achieving the above object, the utility model interlayer blackboard comprises a rectangle plank, is provided with interlayer in plank, in a side of plank as the interlayer opening; The little rectangle plank of another piece sees through opening and inserts in the interlayer.

After adopting said structure, the teacher can be normally at blackboard surface writing words, in case write area occurs when not enough, the teacher also can pull out the small blackboard in the interlayer, increases the area of original blackboard, the condition for study of providing convenience for the student.

The utility model has the advantages that: convenient and practical, rational in infrastructure, moulding is unique, flexible operation, can improve original teaching environment according to the write area of the random conversion blackboard of user's demand.

Description of drawings Fig. 1 is the overall structure schematic diagram of the utility model interlayer blackboard.

The specific embodiment as shown in Figure 1, the utility model interlayer blackboard comprises a rectangle plank 1, is provided with interlayer 2 in plank 1, is provided with opening in a side of plank 1; The little rectangle plank 3 of another piece sees through opening and inserts in the interlayer 2.Wherein, rectangle plank 1 is the area of normal blackboard, and thickness is greater than normal blackboard thickness; Edge at little plank 3 is provided with a handle, and little plank 3 can slide in the interlayer of plank 1.When using, the user is writing words on plank 1 normally, and when write area was not enough, the user also can pull out the little plank 3 that is placed in the interlayer 2, increased original area of blackboard, is convenient to the user and writes and watch.

Claims (1)

1, a kind of interlayer blackboard comprises a rectangle plank (1), it is characterized in that: be provided with interlayer (2) in plank (1), be provided with opening in a side of plank (1); The little rectangle plank of another piece (3) sees through opening and inserts in the interlayer (2).