CN203580428U

CN203580428U - Novel blackboard

Info

Publication number: CN203580428U
Application number: CN201320784511.8U
Authority: CN
Inventors: 李志豪; 黄东斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-01
Filing date: 2013-12-01
Publication date: 2014-05-07
Anticipated expiration: 2023-12-01

Abstract

The utility model relates to a novel blackboard, which is characterized by comprising a lattice board, permanent magnets, an iron post, a blackboard pen and a blackboard eraser, wherein holes are fully distributed in the lattice board, the holes independently exist, the back side of the lattice board is connected with an electromagnet, the permanent magnets are positioned in the holes of the lattice board and can slide, the iron post is made of iron materials, one end of the iron post is black, the other end of the iron post is adsorbed on a permanent magnet arranged in the lattice board, a permanent magnet is arranged inside a contact position of the front end of the blackboard pen and the blackboard, the magnetic field direction of the magnet is identical to that of the permanent magnet arranged in an electronic board; a permanent magnet is arranged in the blackboard eraser, and the magnetic field direction of the magnet is identical to that of the permanent magnet arranged in the lattice board. The novel blackboard has the advantages that during the writing on the blackboard, dust cannot be generated, the harm to human bodies cannot occur, the blackboard can also be erased through the blackboard eraser, and contents required to be remained can be remained.

Description

New type blackboard

Technical field

The utility model relates to a kind of blackboard, specifically a kind of new type blackboard.

Background technology

Chalk teaching aid is the indispensable instrument of imparting knowledge to students at present, with it, carrys out impart knowledge, is one of the most original and the most traditional main teaching method.Along with historical progress and social development, the mankind improve constantly the understanding of chalk, when chalk brings progress and makes huge contribution to mankind's educational undertaking, have brought huge harm also to the teacher and the student that are engaged in educational undertaking.

Society now, the structure of blackboard is variation also, from structure composition, can be divided into support portable plate, draw back plate and lifter plate etc., and blackboard, when wanting wiping, needs hand constantly to go to brandish, and trouble; Some blackboards, when wiping, are by all wipings of whole blackboard entirety, but some place that need to retain also wiped, and need to again write up, and lose time.

Utility model content

For the above, the purpose of this utility model is to provide a kind of new type blackboard, it adopts in blackboard inner side and is provided with electromagnet, blackboard surface is provided with hole, is provided with permanent magnet in hole, and permanent magnet one side is fixed with irony cylinder, cylinder one end is black, by with magnetic pen, make and blackboard in permanent magnet between produce suction, by cylinder sucking-off, on blackboard, form stain.

The technical scheme adopting for real the purpose of this utility model is: a kind of new type blackboard, is characterized in that: it comprises dot matrix plate, permanent magnet, iron prop, blackboard pen, blackboard eraser; On dot matrix plate, be covered with hole, between Kong Yukong, independent existence, is connected with electromagnet at dot matrix plate rear side; Permanent magnet is positioned at the hole of dot matrix plate, slidably; Iron prop is that iron material is made, and its one end is black, and the other end is adsorbed on the permanent magnet in dot matrix plate; Blackboard pen front end and inside, blackboard contact site are provided with permanent magnet, and the magnetic direction of this magnet is identical with the magnetic direction of the permanent magnet in electron plate; In blackboard eraser, be provided with permanent magnet, the magnetic direction of this magnet is contrary with the magnetic direction of the permanent magnet in dot matrix plate.

The beneficial effects of the utility model: can write Shi Buhui and produce dust on blackboard, can not produce injury to human body, can carry out blackboard wiping by blackboard eraser again, the content that needs are retained can remain.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

Fig. 1 is the utility model overall structure figure.

Fig. 2 is that the utility model is used state diagram.

Fig. 3 is dot matrix plate endoporus local structural graph.

Fig. 4 is wiping blackboard structure schematic diagram.

In figure, 1-dot matrix plate, 2-hole, 3-blackboard pen, 4-permanent magnet, 5-iron prop, 6-blackboard eraser.

The specific embodiment

In the first embodiment shown in Fig. 1, Fig. 2, Fig. 3, a kind of new type blackboard, is characterized in that: it comprises dot matrix plate, permanent magnet, iron prop, blackboard pen, blackboard eraser; On dot matrix plate, be covered with hole, between Kong Yukong, independent existence, is connected with electromagnet at dot matrix plate rear side; Permanent magnet is positioned at the hole of dot matrix plate, slidably; Iron prop is that iron material is made, and its one end is black, and the other end is adsorbed on the permanent magnet in dot matrix plate; Blackboard pen front end and inside, blackboard contact site are provided with permanent magnet, and the magnetic direction of this magnet is identical with the magnetic direction of the permanent magnet in electron plate; In blackboard eraser, be provided with permanent magnet, the magnetic direction of this magnet is contrary with the magnetic direction of the permanent magnet in dot matrix plate.

In the second embodiment shown in Fig. 1, Fig. 2, dot matrix plate rear side is provided with electromagnet, when electromagnet is switched on, produces magnetic field, so the iron prop in dot matrix plate is all drawn onto in dot matrix plate; Iron prop one end is black, when stretch out on dot matrix plate hole time, form stain.

In the 3rd embodiment shown in Fig. 1, Fig. 2, Fig. 3, when electromagnet no power, when there is blackboard pen in dot matrix plate outside, blackboard pen is paddling on electron plate, and the magnetic field that the magnet of blackboard pen inside produces is identical with the magnetic field that the magnet in dot matrix plate produces, and makes the magnet of blackboard pen inside and the magnet of dot matrix intralamellar part produce suction, because not being held in the hand, blackboard pen can move, magnet in dot matrix plate is moved to the magnet direction in blackboard pen, thereby iron prop is released, on dot matrix plate, form stain; The diameter in dot matrix intralamellar part hole is greater than the diameter of the permanent magnet in hole, and the opening part diameter in its hole is less than the diameter of the permanent magnet of inside, hole, and magnet can not be moved to outside sky.

In the 4th embodiment shown in Fig. 1, Fig. 2, Fig. 4, in blackboard eraser, be provided with permanent magnet, the magnetic direction of this magnet is contrary with the magnetic direction of the magnet in dot matrix plate, when wiping dot matrix plate, magnet in magnet in blackboard eraser and dot matrix plate produces repulsive force, thereby the iron prop in dot matrix plate hole is pushed back in hole, form white point.

Use during the utility model, by blackboard pen paddling on dot matrix plate, the iron prop black one end in dot matrix plate moves to outside hole, forms stain, and stain and other stain link up and can form lines; When the whole dot matrix plate of needs wiping, by the electromagnet energising of dot matrix plate rear side, under the effect of suction, iron prop is moved in hole; When needs retain on dot matrix plate a certain region, use blackboard eraser wiping dot matrix plate, under the effect of repulsive force, iron prop is moved in dot matrix plate hole.

Claims

1. a new type blackboard, is characterized in that: it comprises dot matrix plate, permanent magnet, iron prop, blackboard pen, blackboard eraser; On dot matrix plate, be covered with hole, between Kong Yukong, independent existence, is connected with electromagnet at dot matrix plate rear side; Permanent magnet is positioned at the hole of dot matrix plate, slidably; Iron prop is that iron material is made, and its one end is black, and the other end is adsorbed on the permanent magnet in dot matrix plate; Blackboard pen front end and inside, blackboard contact site are provided with permanent magnet, and the magnetic direction of this magnet is identical with the magnetic direction of the permanent magnet in electron plate; In blackboard eraser, be provided with permanent magnet, the magnetic direction of this magnet is contrary with the magnetic direction of the permanent magnet in dot matrix plate.

2. new type blackboard according to claim 1, is characterized in that: iron prop one end is black, when stretch out on dot matrix plate hole time, form stain.

3. new type blackboard according to claim 1 and 2, is characterized in that: the diameter in dot matrix intralamellar part hole is greater than the diameter of the permanent magnet in hole, and the opening part diameter in its hole is less than the diameter of the permanent magnet of inside, hole.