CN2546213Y

CN2546213Y - Small Blackboard

Info

Publication number: CN2546213Y
Application number: CN 02229643
Authority: CN
Inventors: 黄荣军; 黄青
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-31
Filing date: 2002-05-31
Publication date: 2003-04-23
Anticipated expiration: 2012-05-31

Abstract

The utility model relates to a small blackboard used for writing, exhibiting and teaching, which comprises a display plate, a shim plate, reels, rotating wheels, a frame and short casing tubes. The utility model is characterized in that the shim plate is fixed to the frame, the short casing tubes are fixed at the upper and the lower ends of side frames at both sides of the frame, an upper and a lower reels pass through the short casing tubes at the upper and the lower ends of the frame respectively, one end of the upper reel and one end of the lower reel are connected with the rotating wheels respectively and both ends of the display plate are fixed to the upper and the lower reels respectively. The dishing points at the peripheries of the rotating wheels can also be designed into a dental type, and protection slices are arranged on the dishing points. Chain ropes of a plurality of small solid balls are fixed to one rope and connected with the two rotating wheels, and the rotating wheels and the chain ropes are arranged in the side frame at one side. A spring pull handle is arranged in a slot prefabricated on one side of the side frame at the lower part of the frame. The frame can also be designed into an upper and a lower parts, and the side frame on the upper part of the joint is sheathed in the side frame at the lower part and can stretch freely. The utility model has the advantages of convenient and flexible use, large capacity, writing time saving in class and good teaching effect.

Description

A kind of small blackboard

The utility model relate to a kind ofly write, exhibiting device, belong to the teaching aid technical field.

At present, teachers ' teaching mainly is the blackboard that utilizes the classroom, on the classroom, write a large amount of contents of courses on the blackboard, because the area of blackboard is limited, the teacher has only write wiping, has wiped and has write, and both loses time, and consumes teacher's energy again; Some problem is gone to school to survive in the classroom and is not come to understand, can be wiped at any time, and this had both affected teacher's classroom teaching effect, is unfavorable for that again the student initiatively learns and gives habit before the class.Like this, small blackboard has just become one of indispensable aided education apparatus in classroom instruction, but its area is little, and capacity is few, and the effect of aided education is also little.

The purpose of this utility model provide a kind of easy to use flexibly, capacity is big, the small blackboard that can save the classroom writing time.

The purpose of this utility model realizes as follows.

A kind of small blackboard comprises Graphic Panel, backing plate, spool, moving runner, framework, short sleeve.Backing plate is fixed on the framework, short sleeve is fixed on the upper/lower terminal of framework both sides frame, upper and lower spool is through at respectively in the short sleeve of framework upper/lower terminal, and upper and lower spool one end is connected with moving runner respectively, and the Graphic Panel two ends are individually fixed on the upper and lower spool.

The moving runner periphery is set to sunk structure, and the depressed part office is provided with many teeth, and a protective sheet is set on the moving runner, and the chain rope of fixing many little medicine balls on rope connects two moving runners, and moving runner and chain rope are arranged in the frame of a side.

The spring pull handle be arranged at framework bottom frame one side in the prefabricated groove.

Framework is upper and lower two parts, and its top, junction frame is inserted in the frame of bottom retractable.

The utlity model has easy to use flexibly, capacity is big, can save the classroom writing time, the advantage that teaching efficiency is good.

Below in conjunction with drawings and Examples the utility model is described in further details.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of the another kind of embodiment of the utility model.

Fig. 3 is the side view of the another kind of embodiment Fig. 2 of the utility model.

Fig. 4 is the moving runner structural representation of the another kind of embodiment Fig. 2 of the utility model.

Fig. 5 is the structural representation of the spring pull handle of the another kind of embodiment Fig. 2 of the utility model.

Fig. 6 is Fig. 2 contraction state structural representation of the present utility model.

As shown in Figure 1, small blackboard of the present utility model comprises Graphic Panel (4), backing plate (5), spool (6), moving runner (1), framework (15), short sleeve (2).Framework (15) is made of frame (8) and crossbeam (7), is screwed connection by little corner block (10).Backing plate (5) is screwed on framework (15), writes on Graphic Panel (4) or plays a pad effect during wiping.Short sleeve (2) is screwed the upper/lower terminal at framework (15) both sides frames (8), upper and lower spool (6) is through at respectively in the short sleeve (2) of framework (15) upper/lower terminal, one end of upper and lower spool (6) is screwed with moving runner (1) respectively and is connected, rotate moving runner (1) and drive upper and lower spool (6) and rotate, make Graphic Panel (4) go up or last volume on upper and lower spool (6).Graphic Panel (4) two ends adhere on the upper and lower spool (6) with adhesive respectively, and Graphic Panel (4) is the material (as fibers material, cloth etc.) that soft dark color can be write letter written with chalk, and the back side is the Pasting plastic sheeting also, reduces friction.

Shown in Fig. 2,3,4,5,6, another kind of embodiment of the present utility model is: moving runner (1) periphery is made for sunk structure, many teeth (14) are made in the depressed part office, moving runner (1) is gone up the prefabricated or circular arc protective sheet (11) that bonds, chain rope (3) constitutes by putting on many little solid plastic balls on the rope, chain rope (3) connects two moving runners (1), and protective sheet (11) prevents that chain rope (3) is from upward slippage of moving runner (1).Moving runner (1) and chain rope (3) are installed in the frame (8) of a side.Two spring pull handles (9) respectively by the slide block on it (12) be stuck in framework (15) bottom frame (8) one sides in prefabricated two grooves (13).Pin a spring pull handle (9), its fork is lived chain rope (3), pulling downwards, and chain rope (3) drives moving runner (1) and spool (6) rotates, if need to continue pulling, repeats said process; If counter-rotation spurs another spring pull handle (9), method as described above.Framework (15) is made upper and lower two parts, and its top, junction frame (8) is inserted in the bottom frame (8), retractable.

Claims

1, a kind of small blackboard, comprise Graphic Panel, backing plate, spool, moving runner, framework, short sleeve, it is characterized in that: backing plate is fixed on the framework, short sleeve is fixed on the upper/lower terminal of framework both sides frame, upper and lower spool is through at respectively in the short sleeve of framework upper/lower terminal, upper and lower spool one end is connected with moving runner respectively, and the Graphic Panel two ends are individually fixed on the upper and lower spool.

2, a kind of small blackboard according to claim 1, it is characterized in that: the moving runner periphery is set to sunk structure, the depressed part office is provided with many teeth, one protective sheet is set on the moving runner, article one, the chain rope of fixing many little medicine balls on the rope connects two moving runners, and moving runner and chain rope are arranged in the frame of a side.

3, a kind of small blackboard according to claim 2 is characterized in that: the spring pull handle be arranged at framework bottom frame one side in the prefabricated groove.

4, according to claim 2 or 3 described a kind of small blackboards, it is characterized in that: framework is upper and lower two parts, and its top, junction frame is inserted in the frame of bottom retractable.