CN203358127U

CN203358127U - Push-and-pull blackboard

Info

Publication number: CN203358127U
Application number: CN 201320436677
Authority: CN
Inventors: 杨芬
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-22
Filing date: 2013-07-22
Publication date: 2013-12-25
Anticipated expiration: 2023-07-22

Abstract

The utility model provides a push-and-pull blackboard which comprises an upper guide rail, a lower guide rail, a white board, a fixing board and a push-and-pull board. The push-and-pull blackboard is characterized in that the upper guide rail and the lower guide rail are fixed on the wall face in parallel, the white board is fixed on the wall face, the fixing board is connected with the wall face through a connecting piece, the upper end and the lower end of the push-and-pull board are respectively connected with a rolling wheel set fixedly, the rolling wheel set is arranged inside the upper guide rail and the lower guide rail, a dust collecting groove is formed in the lower portion of the push-and-pull board, and the push-and-pull board is arranged on the front portion of the white board. The push-and-pull blackboard can be pushed and pulled, the blackboard-writing area of the push-and-pull blackboard is increased, when the push-and-pull board is used, the push-and-pull board covers the white board, the fixing board and the connecting piece of the wall body are unfolded, the push-and-pull board and the fixing board are located in the same plane, blackboard writing by teachers and looking by students can be conveniently achieved, the push-and-pull board slides in the mode of the rolling wheel set and the guide rails, chalk dust cannot drop inside the guide rails, the situation that the push-and-pull board is blocked can be avoided, and the push-and-pull blackboard is convenient to push and pull. In addition, the dust collecting groove is formed in the push-and-pull board, therefore, the chalk dust is conveniently collected, and the push-and-pull blackboard is clean and healthy.

Description

The push-and-pull blackboard

Technical field

The utility model relates to a kind of instructional device, is a kind of by the push-and-pull blackboard of blank and normal blackboard combination specifically.

Background technology

Blank has obtained using widely in teaching, in teaching, is mostly nowadays the teaching method that blank and normal blackboard combine, or the school had is that the curtain that hangs projecting apparatus in the blackboard front carries out electronic instruction.But, the curtain of existing blank or projecting apparatus is all generally to cover on existing normal blackboard, when contrasting blank and explained, teacher just can't on normal blackboard, write again, reduced the writing on the blackboard area of blackboard, but the blackboard that push-and-pull also occurred on the market, increase the writing on the blackboard area of blackboard, but existing push-and-pull blackboard, the blackboard slided and fixing blackboard be not at a horizontal plane, be not easy to teacher's writing on the blackboard, make troubles also to watching of student, and, existing push-and-pull blackboard is all the push-pull fashion that adopts chute-type, if chalk dust drops in chute, just be easy to hinder the movement of blackboard, cause slide very painstaking of push-and-pull blackboard, sometimes even directly that the blackboard slided is stuck, to education activities, make troubles.

The utility model content

The utility model provides a kind of push-and-pull blackboard according to the deficiencies in the prior art, simple in structure, but the blackboard surface push-and-pull, fixed head and draw back plate are in same plane, and roller set is rolled in guide rail, not there will be chalk dust to block the situation of draw back plate.

The technical solution of the utility model: described a kind of push-and-pull blackboard, comprise upper rail, lower guideway, blank, fixed head and draw back plate, it is characterized in that: what described upper rail was parallel with lower guideway is fixed on metope, blank is fixed on metope, fixed head is connected with metope by connector, and the draw back plate top and bottom are fixedly connected with roller set respectively, and roller set is placed in upper rail and lower guideway, bottom at draw back plate is provided with dust collecting trough, and draw back plate is arranged on the front portion of blank.

Described connector is folding connector.

Described fixed head when connector is folded up and blank be in same plane.

Described fixed head when connector trails and draw back plate be in same plane.

Technique effect of the present utility model: but the blackboard push-and-pull, increased the writing on the blackboard area of blackboard, when using blank, draw back plate covers on fixed head, blank and fixed head are in same plane, conveniently on draw back plate, write, when using draw back plate, draw back plate covers on blank, the connector of fixed head and body of wall launches, draw back plate and fixed head are in same plane, facilitate teacher's writing on the blackboard and student viewing, draw back plate adopts the form of roller set and guide rail to slide, chalk dust can not drop to guide rail inside, the situation that not there will be draw back plate to block, the push-and-pull convenience very of getting up, and the dust collecting trough on draw back plate, the convenient chalk dust of collecting, clean hygiene.

The accompanying drawing explanation

Schematic diagram when Fig. 1 is the utility model use blank;

Schematic diagram when Fig. 2 is the utility model side use draw back plate;

Fig. 3 is the utility model overall structure schematic diagram;

Fig. 4 is the utility model connector schematic diagram when folding;

Fig. 5 is the utility model connector schematic diagram while trailing.

Number in the figure means respectively: 1-body of wall, 2-upper rail, 3-lower guideway, 4-blank, 5-fixed head, 6-draw back plate, 7-dust collecting trough, 8-roller set, 9-connector.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further illustrated:

As shown in the figure, described a kind of push-and-pull blackboard, comprise upper rail 2, lower guideway 3, blank 4, fixed head 5 and draw back plate 6, it is characterized in that: what described upper rail 2 was parallel with lower guideway 3 is fixed on metope 1, and blank 4 is fixed on metope 1, and fixed head 5 is connected with metope 1 by connector 9, draw back plate 6 top and bottom are fixedly connected with roller set 8 respectively, roller set 8 is placed in upper rail 2 and lower guideway 3, in the bottom of draw back plate 6, is provided with dust collecting trough 7, and draw back plate 6 is arranged on the front portion of blank 4.

Described connector 9 is folding connector.

Described fixed head 5 when connector 9 is folded up and blank 4 be in same plane.

Described fixed head 5 when connector 9 trails and draw back plate 6 be in same plane.

When using blank, connector is folded up, make fixed head and blank be in same plane, draw back plate is shifted onto on fixed head, can on draw back plate, write easily, when using draw back plate, draw back plate covers on blank, and connector trails, and draw back plate and fixed head are in same plane, draw back plate and fixed head form the blackboard of an integral body, facilitate teacher to write and the student viewing blackboard.The upper and lower side of draw back plate connects roller set, roller set is rolled in guide rail, thereby make push-and-pull plug of tobacco guide rail horizontally slip, owing to adopting guide rail and roller set to replace chute and pulley, chalk dust can not drop in guide rail, yet just not there will be by chalk dust and hinder the situation that push-and-pull plug of tobacco guide rail slides, it is smooth and easy that draw back plate slides, get up very laborsaving of push-and-pull, the dust collecting trough of draw back plate bottom, can be good at the chalk dust produced when collecting chalk-writing and erasing the board, hygienic environment-protecting.Push-and-pull blackboard of the present utility model, simple in structure, easy to use, very applicable classroom is used the inside.

Claims

1. a push-and-pull blackboard, comprise upper rail (2), lower guideway (3), blank (4), fixed head (5) and draw back plate (6), it is characterized in that: what described upper rail (2) was parallel with lower guideway (3) is fixed on metope (1), blank (4) is fixed on metope (1), fixed head (5) is connected with metope (1) by connector (9), draw back plate (6) top and bottom are fixedly connected with roller set (8) respectively, roller set (8) is placed in upper rail (2) and lower guideway (3), be provided with dust collecting trough (7) in the bottom of draw back plate (6), draw back plate (6) is arranged on the front portion of blank (4).

2. push-and-pull blackboard according to claim 1, it is characterized in that: described connector (9) is folding connector.

3. push-and-pull blackboard according to claim 1 and 2 is characterized in that: described fixed head (5) at connector (9) while folding up and blank (4) be in same plane.

4. push-and-pull blackboard according to claim 1 and 2 is characterized in that: described fixed head (5) at connector (9) while trailing and draw back plate (6) be in same plane.