CN2573266Y

CN2573266Y - Rotary auto-erasing dualpurpose blackboard

Info

Publication number: CN2573266Y
Application number: CN 02259136
Authority: CN
Inventors: 李家亮; 张德学; 齐伟春; 刘学峰; 郑来忠
Original assignee: 李家亮
Priority date: 2002-09-28
Filing date: 2002-09-28
Publication date: 2003-09-17
Anticipated expiration: 2012-09-28

Abstract

The utility model discloses a rotary automatic-erasing dual-purpose blackboard, which comprises a rear cover plate, a wooden plate bracket, a rolling shaft, a canvas layout, a hand wheel, etc., wherein, the rear cover plate is orderly fixed with a coarse hair brush, a dust baffle plate with a certain slope, a vertically arranged dust guide groove, a fine hair brush and a dust box; the upper and the lower ends of the wooden plate bracket are respectively connected with an upper rotating shaft and a lower rotating shaft; the canvas layout is arranged on the assembled wooden plate bracket to cause the rear cover plate and the wooden plate bracket to be hermetically connected. Due to the adoption of the structure, the cloth layout is driven to rotate by the upper and the lower rotating shafts; when the utility model is turned over, nothing remains but to rotate the hand wheel, the coarse hair brush and the fine hair brush arranged on the rear cover plate can automatically scrub the layout, and the brushed dust is collected into the dust box through the dust baffle plate and the guide groove, so that dust pollution can be avoided.

Description

The rotary Double-purpose blackboard of wiping automatically

Technical field: the utility model relates to a kind of blackboard of the usefulness of imparting knowledge to students.

Background technology: blackboard is a visual plant of implementing classroom instruction, but school generally uses the frosted glass blackboard at present,

Workload is big when erasing the board, and dust pollution is serious, healthy very unfavorable to teachers and students.Although occurred dust absorption blackboard eraser on the market, but still do not break away from the method that tradition erases the board.

Technology contents: the purpose of this utility model is exactly big at the existing workload that erases the board, the problem that dust pollution is serious, and a kind of blackboard of wiping automatically and not having dust pollution of design.

The purpose of this utility model is to realize like this, this rotary Double-purpose blackboard of wiping automatically comprises back shroud, the plank support, roller bearing, the canvas space of a whole page, parts such as hand runner, the upper fixed of described back shroud the coarse wool brush, the dust baffle of constant slope is being fixed at the middle part, the dust guide groove is vertically being placed in the lower right of dust baffle, be right after its below and fixing one deck fine, soft fur brush again, dust box is placed in lower edge at its back shroud, described plank support is square, on the plank support, following two ends are connecting respectively goes up rotating shaft and lower rotary shaft, the hand runner is fixed on the right-hand member of lower rotary shaft, the canvas space of a whole page is contained on the plank support that assembles, and the two ends of canvas are linked up, back shroud and plank support are tightly connected.

Owing to adopt said structure, drive the rotation of the cloth matter space of a whole page by upper and lower rotating shaft, only need rotate the hand runner during upset, the coarse wool brush and the fine, soft fur brush that are arranged on the back shroud are scrubbed the space of a whole page automatically, the dust that brush falls is collected into dust Zhu box through dust baffle and guide groove, has avoided dust pollution.

Description of drawings: describe embodiment of the present utility model in detail below in conjunction with accompanying drawing

Fig. 1 back shroud schematic diagram

Fig. 2 back shroud sectional view

Fig. 3 canvas space of a whole page schematic diagram

Fig. 4 canvas space of a whole page sectional view

Fig. 5 plank support schematic diagram

Fig. 6 plank support sectional view

Rotating shaft schematic diagram on Fig. 7

Fig. 8 lower rotary shaft schematic diagram

Fig. 9 hand runner schematic diagram

Among the figure: 1, back shroud 2, coarse wool brush 3, dust baffle 4, fine, soft fur brush 5, dust guide groove 6, dust box 7, the canvas space of a whole page 8, plank support 9, upward rotating shaft 10, lower rotary shaft 11, hand runner

Embodiment: in Fig. 1: coarse wool brush 2 in the upper fixed of back shroud 1, the dust baffle 3 of constant slope is being fixed at the middle part, dust guide groove 5 is vertically being placed in the lower right of dust baffle 3, is right after its below and is fixing one deck fine, soft fur brush 4 again, places dust box 6 in the lower edge of its back shroud 1.

Fig. 2 is the sectional view of Fig. 1, shows coarse wool brush 2, dust baffle 3, dust guide groove 5, fine, soft fur brush 4 and dust box successively.

Fig. 3, Fig. 4 show the canvas space of a whole page 7.

Fig. 5, Fig. 6 show plank support 8.

Fig. 7 shows rotating shaft 9.

Fig. 8 shows lower rotary shaft 10.

Fig. 9 shows hand runner 11.

Last rotating shaft 9 and lower rotary shaft 10 are separately fixed at the two ends up and down of plank support 8, the canvas space of a whole page 7 is contained on the plank support 8 that assembles, with slide fastener the canvas space of a whole page 7 two ends are coupled together, make it tightly to be enclosed within on the plank support 8, and back shroud 1 and plank support 8 are tightly connected.

When rotating hand runner 11, because frictional force drives the canvas space of a whole page 7 and rotates, when brushing 2 through the coarse wool of back shroud 1, writing major part on the canvas space of a whole page 7 is wiped free of, and the dust of wiping is fallen on the dust baffle 3, because gravity, dust is fallen in the dust Zhu box 6 by dust guide groove 5 again, when writing brushes 4 through fine, soft fur, brushed once more one time, make the space of a whole page clean fully.

Claims

1, a kind of rotary Double-purpose blackboard of wiping automatically, this Double-purpose blackboard comprises back shroud, the plank support, roller bearing, the canvas space of a whole page, parts such as hand runner, the upper fixed that it is characterized in that described back shroud the coarse wool brush, the dust baffle of constant slope is being fixed at the middle part, the dust guide groove is vertically being placed in the lower right of dust baffle, be right after its below and fixing one deck fine, soft fur brush again, dust box is placed in lower edge at its back shroud, described plank support is square, on the plank support, following two ends are connecting respectively goes up rotating shaft and lower rotary shaft, the hand runner is fixed on the right-hand member of lower rotary shaft, the canvas space of a whole page is contained on the plank support that assembles, and the two ends of canvas are linked up, back shroud and plank support are tightly connected.