CN2424021Y - Magnetic controlled writing board - Google Patents

Abstract

The utility model realizes writing and erasion on a board surface by using the principle of magnetic control. The utility model alters the erasion mode of a present drawing and writing board, and the partial erasion can be carried out by that the board surface and a board eraser to control the back board eraser. The applied range of the drawing and writing board can be enlarged. The utility model can be used for applying in teaching demonstration, and can completely solve the problem of serious fly ash of a blackboard. The utility model has the advantages of simple manufacturing technique, low cost, no energy consumption and convenient operation.

Description

The magnetic control board

The utility model relates to a kind of teaching demonstration board, especially magnetic control board.

At present, still write with the blackboard chalk in the teaching demonstration field and to be illustrated as the master, because this teaching means dust is big, seriously polluted, teachers and students grieve endlessly, also bring many inconvenience to teaching simultaneously.The dust pollution question that on the market though some product eliminates arranged, as Writing and drawing board, it is to install the same wide bar magnet with the plate face at the back side of board, write on the plate face with magnetic pen, when needing erasing, mobile bar magnet is inhaled the writing (soft magnetic ferrite particles) of whole plate face and is pulled to the board bottom.Because the restriction of its this erasing mode, can only small area applications, if board can be used, just must change its erasing mode in teaching demonstration, increase the area of board.

The purpose of this utility model just provides a kind of magnetic control board, does not have dust pollution, can local erasing, can in teaching demonstration, use.

The purpose of this utility model is achieved in that the magnetic control board is made up of board, the wiping of plate panel, fixed border, magnetic writing pen.Board is contained on the substrate, and substrate up and down two limits is equipped with slideway, and the blackboard eraser cursor slide is installed on the substrate up and down slideway by the slideway on the roller box up and down.The plate panel is wiped and to be contained on the U-shaped slide bar U-shaped slide bar two ends and to be separately fixed at up and down on the roller box, and the plate panel smears control knob is housed.Card blocked pull rope in the U-shaped slide bar during the plate panel was wiped, pull rope through about in the roller box guide wheel be contained in the plate back support rod on plate after blackboard eraser be connected.Three control wheels are arranged in the plate panel is wiped, and control rope one end links to each other with control wheel in the last roller box and around thereon, the other end pass the plate panel wipe in control take turns, be fixed on down in the roller box.The control of last roller box wheel is installed in behind the plate on the square axis, square axis passes behind the plate in the blackboard eraser cylinder to roller box down, block by washer, the supported bar chute of blackboard eraser clamping behind the plate, cramp bar is fixedlyed connected with roller box up and down, cylinder is housed in the blackboard eraser behind the plate, and cylinder simultaneously is equipped with permanent magnet, and the center is a square hole.After writing with the magnetic writing pen, when needing erasing, hand-held plate panel is wiped and is driven blackboard eraser cursor slide move left and right on slideway, the plate panel is wiped and can be moved up and down on the U-shaped slide bar, by being stuck in the pull rope that the plate panel is wiped, drive up and down that guide wheel rotates in the roller box, and blackboard eraser moves up and down synchronously after driving plate.Press the control knob that the plate panel smears, the control rope is drawn, control in last roller box wheel rotates, and square axis also rotates thereupon, drives behind the plate that cylinder rotates 180 ° in the blackboard eraser, the one side that permanent magnet is housed is gone to orientation substrate, get final product erasing this moment, control knob is decontroled, the cylinder behind the plate in the blackboard eraser is under back-moving spring below the square axis drives, set back, erasing finishes.

Owing to adopt such scheme, realized local erasing, making board make area can increase, and can use in teaching demonstration, simple in structure.

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

Fig. 1 is a magnetic control board structure chart.

Fig. 2 is a blackboard eraser cursor slide structure chart.

Fig. 3 is that the arrangement and the pull rope of guide wheel moves towards figure.

Fig. 4, the 5th, the plate panel is wiped structure chart.

Fig. 6 is a blackboard eraser structure chart behind the plate.

Among Fig. 1: 1. frame; 2. board; 3. substrate; 4. slideway; 5. blackboard eraser cursor slide.Among Fig. 2: 6. go up roller box; 7. support bar; 8. blackboard eraser behind the plate; 9. square axis; 10. blackboard eraser pull rope behind the plate; 11. back-moving spring; 12. slideway folder; 13.U shape slide bar; 14. the plate panel is wiped; 15. control rope; 16. following roller box.Among Fig. 3: the 17.22.23.27 guide wheel; 18. control wheel; 19.20 blackboard eraser stiff end behind the pull rope plate; 21. square axis washer; 24. control rope guide wheel; 25. pull rope; 26. control rope stiff end.Among Fig. 4,5: 28. lower covers; 29.U shape slide bar slide opening; 30. pull rope card; 31. control knob; 32. screw hole; 33. upper cover plate; 34. control rope guide hole; 35,36,37. control wheels.Among Fig. 6; 38. square internally and round externally cover; 39. pull rope fixing hole; 40. permanent magnet; 41. it is sliding protruding; 42. cylinder.

When hand-held plate is examined (14) on the plate face when mobile, laterally move the move left and right that realizes the blackboard eraser cursor slide by plate face up and down slideway (4), when moving up and down, the plate panel is wiped (14) interior pull rope cards (30) pull rope (25) is blocked, the plate panel is wiped (14) and is moved up and down on U-shaped slide bar (13), guide wheel (17) (22) (23) (27) about driving in the roller box (6) (16) rotates (pull rope trend: 19 end pull ropes → (17) → (22) → (27) → plate panel wiping, 20 end pull ropes → (22) → (17) → (23) → plate panel is wiped), be fixed on blackboard eraser (8) behind the plate on the pull rope (25), move up and down synchronously thereupon, during erasing, the control knob (31) that the plate panel is wiped on (14) is pressed, control rope (15) is wiped controlled ratch (36) in (14) at the plate panel, push control wheel (35) to, (37) (design (35) (36) (37) are for controlling rope, can wipe (14) when moving up and down at the plate panel again, the reduction resistance) control rope (15) is pushed, and control wheel (18) rotation in the roller box (6) is gone up in drive, driving square axis (9) simultaneously rotates, the cylinder (42) that the plate panel is wiped in (8) rotates 180 °, the one side that permanent magnet (40) will be housed goes to orientation substrate, at this moment gets final product erasing.Control knob (31) is decontroled, and square axis (9) sets back cylinder (42) under back-moving spring (11) drives, and erasing finishes.

In order to improve the utility model more, reduce resistance in force when making blackboard eraser cursor slide move left and right, can press from both sides in (12) at slideway and install pulley additional, pull rope (25), control rope (15) should reach required intensity, and guide wheel should be selected suitable diameter for use in the roller box up and down, with guarantee the plate panel wipe (14) when moving up and down resistance very little, certainly laterally, longitudinal resistance is more little, implementation result of the present utility model is just good more.

Claims (6)

1, a kind of magnetic control board, form by board, the wiping of plate panel, fixed border, magnetic writing pen, it is characterized in that: board is contained on the substrate, substrate is equipped with slideway in two limits up and down, the blackboard eraser cursor slide is installed on the substrate up and down slideway by the slideway folder on the roller box up and down, and the plate panel is wiped and is contained on the U-shaped slide bar, on the roller box, the plate panel had smeared control knob about U-shaped slide bar two ends were separately fixed at.

2, according to the described magnetic control board of claim 1, it is characterized in that: card blocked pull rope in the U-shaped slide bar during the plate panel was wiped, the guide wheel of pull rope in roller box up and down, be contained in the plate back supporting rod on plate after the blackboard eraser two ends be connected.

3, according to the described magnetic control board of claim 1, it is characterized in that: three control wheels are housed during the plate panel is wiped.

4, according to the described magnetic control board of claim 1, it is characterized in that: control rope one end is fixed on that roller box control wheel is gone up and around thereon, the other end pass the plate panel wipe in the control wheel, fixing in the roller box down.

5, according to the described magnetic control board of claim 4, it is characterized in that: control wheel is fixed on the square axis, and square axis passes behind the plate in the blackboard eraser cylinder to roller box down and blocked by washer.

6, according to the described magnetic control board of claim 5, it is characterized in that: cylinder simultaneously is equipped with permanent magnet, and the center is a square hole.

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