CN203185923U

CN203185923U - Teaching aid

Info

Publication number: CN203185923U
Application number: CN 201320144983
Authority: CN
Inventors: 郭秀丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-28
Filing date: 2013-03-28
Publication date: 2013-09-11
Anticipated expiration: 2023-03-28

Abstract

The utility model discloses a teaching aid. The teaching aid comprises a blackboard and an iron chalk sleeve and is characterized in that the blackboard is of a double-layer structure and includes a surface layer and an inner layer, wherein the surface layer is a rough pitted surface, an inner cavity is formed between the surface layer and a wall, one side of the inner cavity is opened, and a magnetic material board is inserted into an opening of the inner cavity to form the blackboard inner layer. An insulating edge is arranged on the periphery of the blackboard, a seal ring is arranged between the insulating edge and the wall, a sealing protective cover is arranged on the opening of the inner cavity, a dust collecting box is arranged at the lower portion of the blackboard, and a movable hole is arranged at the bottom of the dust collecting box. When a teacher performs writing, direct contact between the teacher and a chalk during writing can be avoided only by placing the chalk into the chalk sleeve. When a mark is needed, the chalk sleeve can be inversely placed to be attracted onto the blackboard, and different objects or points are marked through different colors of chalks. The teaching aid is convenient to move and simple in operation and facilitates understanding of students, frequent writing, erasing and other actions are omitted, and burden of the teacher is relieved.

Description

A kind of teaching aid

Technical field:

The utility model relates to a kind of teaching aid, particularly a kind of teaching aid that has plate of magnetic material.

Background technology

Teaching aid has closely bound up, inseparable relation for teaching, academics and students's daily life be unable to do without teaching aid.At present the blackboard that uses uses common material mostly, and teacher needs frequently to wipe in teaching again and writes, and the chalk consumption is big, and application efficiency is low, and powder directly contacts teacher's finger, and teacher's burden is heavier.

The utility model content

Technical problem of the present utility model: design a kind of teaching aid, avoid directly writing contiguously with chalk, save actions such as writing frequently and wipe, alleviate teacher's burden.

Technical scheme: design a kind of teaching aid, the chalk sleeve that comprises blackboard and irony, it is characterized in that: described blackboard is set to bilayer, comprise top layer and internal layer, the top layer is set to coarse pitted skin, form inner chamber with between the walls, described inner chamber one side opening, plate of magnetic material is inserted from lumen openings and is constituted the blackboard internal layer, around the blackboard insulating flange is set, insulating flange and between the walls arrange sealing ring, and described lumen openings arranges the sealing protecting cover, described blackboard bottom arranges dust-collecting box, and described dust-collecting box bottom arranges movable span.

Beneficial effect:

1, the chalk sleeve of irony is avoided directly writing contiguously with chalk.

2, irony chalk sleeve, the blackboard internal layer adopts plate of magnetic material, and chalk sleeve can be easy to be adsorbed onto on the blackboard; The teacher only needs chalk is inverted the optional position that just can be adsorbed on blackboard, need not specially to deposit.

3, chalk uses different colors, can be mobile in blackboard absorption, be used for representing different marks, and save actions such as writing frequently and wipe, alleviate teacher's burden.

4, use chalk sleeve, chalk is not easy to fracture, and improves utilization ratio.

5, around the blackboard insulating flange is set, insulating flange and between the walls arrange sealing ring, prevent that the iron filings particle from entering the blackboard internal layer.

6, described lumen openings arranges the sealing protecting cover, during the cleaning blackboard, internal layer can be extracted out, and the iron filings that stick to the blackboard surface like this will come off naturally; Protecting cover has also stoped entering of chalk dust.

7, bottom the described dust-collecting box movable span is set, movable span seals at ordinary times, and movable span is opened in the water flushing when needing cleaning, and chalk powder and other dusts flow out with water from movable span.

Description of drawings:

Fig. 1 is structural representation of the present utility model

Fig. 2 is the utility model chalk sleeve structural representation

Among the figure: 2 inner chambers, 3 sealing protecting covers, 4 plate of magnetic material, 5 dust-collecting boxes, 6 movable spans, 7 walls, 8 chalks, 9 chalk sleeves of 1 top layer.

The specific embodiment:

As shown in the figure, a kind of teaching aid, the chalk sleeve 9 that comprises blackboard and irony, described blackboard is set to bilayer, comprise top layer 1 and internal layer, top layer 1 is set to coarse pitted skin, and form inner chamber 2 between the wall 7, described inner chamber 2 one side openings, plate of magnetic material 4 insert from inner chamber 2 openings and constitute the blackboard internal layer, and insulating flange is set around the blackboard, between insulating flange and the wall 7 sealing ring is set, described inner chamber 2 openings arrange sealing protecting cover 3, and described blackboard bottom arranges dust-collecting box 5, and described dust-collecting box 5 bottoms arrange movable span 6.

Chalk sleeve 9 is irony, and the blackboard internal layer adopts plate of magnetic material 4, and chalk sleeve 9 can be easy to be adsorbed onto on the blackboard; The teacher only needs chalk 8 is inverted the optional position that just can be adsorbed on blackboard; insulating flange is set around the blackboard; the magnetic of protection plate of magnetic material 4 is more permanent; between insulating flange and the wall 7 sealing ring is set; prevent from waving aerial iron molecule or other irony dust is adsorbed and enters in the inner chamber 2; chalk 8 uses different colors; can be mobile in blackboard absorption; be used for representing different marks that save actions such as writing frequently and wipe, described dust-collecting box 5 bottoms arrange movable span 6; movable span 6 seals at ordinary times; movable span 6 is opened in the water flushing when needing cleaning, and chalk powder and other dusts flow out with water from movable span 6.

Claims

1. teaching aid, the chalk sleeve that comprises blackboard and irony, it is characterized in that: described blackboard is set to bilayer, comprise top layer and internal layer, the top layer is set to coarse pitted skin, form inner chamber with between the walls, described inner chamber one side opening, plate of magnetic material is inserted from lumen openings and is constituted the blackboard internal layer, around the blackboard insulating flange is set, insulating flange and between the walls arrange sealing ring, and described lumen openings arranges the sealing protecting cover, described blackboard bottom arranges dust-collecting box, and described dust-collecting box bottom arranges movable span.