CN2675416Y

CN2675416Y - Dustless blackboard

Info

Publication number: CN2675416Y
Application number: CN 200320112873
Authority: CN
Inventors: 王海新
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-03
Filing date: 2003-12-03
Publication date: 2005-02-02
Anticipated expiration: 2013-12-03

Abstract

A dustless blackboard belongs to the technical field of writing or drafting article. The blackboard mainly relates to a dustless blackboard, which turns the chalk into the marker and uses the white mirror surface flat glass instead of existing dark green (or other colors) depolished glass plate blackboard. In the back of the mirror surface flat glass, the white paint is painted; on the lower of the top frame and the upper of the below frame, a slide track of the blackboard eraser is positioned. In the upper or lower slide tracks, a blackboard eraser device is arranged glidingly. On the both sides of the middle axle, a blackboard eraser clamp is fixed through a connecting bar, and inside of the blackboard eraser clamp, a blackboard eraser is positioned. A duct is positioned on the upper cross bar and a water container is positioned in the middle of the water duct. The duct respectively leads to the blackboard eraser clamps which are positioned in the both sides of the middle axle, and a hydrovalve is arranged on each duct. In the connecting bar which is positioned on the both sides of the middle axle a clamp plate which can control the blackboard eraser clamp is arranged. On the back of the middle axle, a rubber scratch board is positioned through the connecting bar. The utility model has the advantages of environmental protection without dust, convenience for cleaning the blackboard and makes the blackboard clear with no smudge after cleaning.

Description

Dust-free blackboard

Technical field:

The utility model belongs to be write or the drawing article technical field, is specifically related to a kind of blackboard that does not produce dust, international Patent classificating number: B43L1/04, B43L7/00, B43L9/02.

Background technology:

Now, the main tool that teacher conveys knowledge in classroom is " chalk+blackboard ".Though this traditional apparatus is cheap, when erasing the board, the chalk foam flies upward everywhere, make academics and students's hair and on one's body, all be the dust of chalk on the desk.Because the dust of chalk is too big, teacher can reduce the number of times that erases the board at school the time as far as possible, must influence Teaching Quality so to a great extent; In addition, the dust of breathing chalk for a long time also can cause great harm to organs such as academics and students's respiratory tract, lungs.

Summary of the invention:

Goal of the invention of the present utility model provides a kind of blackboard of dust and the compasses and ruler of blackboard eraser and suitable and this blackboard use of not producing.

The purpose of this utility model is achieved through the following technical solutions: make chalk into the blank pen, replace existing blackish green (or other color) ground glass plate blackboard with white minute surface plate glass; Be brushed with white paint in the back of mirror plate glass, stud with four frames on four limits of mirror plate glass, following and following upper frame edge is provided with the slideway of blackboard eraser at upper ledge; In up and down slideway, be slidingly fitted with device for blackboard eraser; Described blackboard eraser is made up of following structure: the upper end at axis is fixed with cross tube, and pulley is installed on cross tube, is fixed with sheer pole in the lower end of axis, and pulley is installed below sheer pole; Pulley slides in the blackboard eraser slideway of blackboard upper ledge bottom and following upper frame edge; Both sides at axis are fixed with the blackboard eraser clamping plate by rotating connecting rod, accompany blackboard eraser in the blackboard eraser clamping plate, be fixed with conduit on cross tube, the center fixed of leading at water has water container, conduit leads to the blackboard eraser clamping plate of axis both sides respectively, and water valve respectively is installed on conduit; The pressing plate of control blackboard eraser clamping plate is installed on the connecting rod of axis both sides, spring is arranged in the bottom of connecting rod; Rear side at axis is equipped with rubber flap by connecting plate.

For improving the definition of blackboard writing under the light or the inadequate situation of throwing light on, can behind Glass whiteboard, install fluorescent lamp additional.

The utlity model has following good effect:

1, blackboard eraser is to utilize the raw material of this cleaning of water and adopt dustless blank pen as writing implement, accomplishes real environmental protection;

2, time saving and energy saving, it is promptly convenient quick again that the utility model has been wiped blackboard;

3, owing to there is not dust,, after nuzzling up, do not stay any stains so blackboard is clear.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of the utility model blackboard eraser;

Fig. 3 is the side-looking structural representation of the utility model blackboard eraser;

The specific embodiment:

The utility model is realized in the following manner: be to make chalk into the blank pen, replace existing blackish green (or other color) ground glass plate blackboard with white minute surface plate glass; Be brushed with white paint in the back of mirror plate glass 3, stud with four frames 4 on four limits of mirror plate glass 3, following and following upper frame edge is provided with the slideway 5 of blackboard eraser at upper ledge; Be slidingly fitted with device for blackboard eraser 2 for 5 li at up and down slideway; Described device for blackboard eraser is made up of following structure: the upper end at axis 8 is fixed with cross tube, and pulley 10 is installed on cross tube, is fixed with sheer pole in the lower end of axis 8, and pulley is installed below sheer pole; Pulley 10 is in 5 li slips of blackboard eraser slideway of blackboard upper ledge bottom and following upper frame edge; In the both sides of axis 8 by serving as that four connecting rods 13 that axle can be adorned are fixed with the blackboard eraser clamping plate with axis 8, accompany blackboard eraser 11 in the blackboard eraser clamping plate, on cross tube, be fixed with conduit 6, center fixed at conduit has water container 1, conduit 6 leads to the blackboard eraser clamping plate of axis 8 both sides respectively, and water valve 7 respectively is installed on conduit 6, the effect of water valve 7 is to regulate the water yield that flows to blackboard eraser 11; The pressing plate 9 of control blackboard eraser clamping plate is installed on two connecting rods 13 in the centre of axis 8 both sides, in the connecting rod bottom that pressing plate is installed spring 12 is arranged, the effect of spring 12 is to make when lifting pressing plate 9, and the blackboard eraser clamping plate lift and leave blackboard surface; Rear side at axis 8 is equipped with rubber flap 15 by connecting plate 14.

Using method of the present utility model is: the water of water bottle 1 is by conduit 6, flow to the blackboard eraser 11 of device for blackboard eraser 2 both sides, to wipe 11 wettingly, and depress pressing plate 9, the wiping 11 that makes blackboard eraser is the glass faces of contact blackboards 3 fully, promote device for blackboard eraser 2, wipe the writing on the blackboard 3, rubber flap 15 has done blackboard the water mark scraping on the glass face soon simultaneously, the blackboard of wiping is promptly totally not moist again like this, just can write once more at once.Device for blackboard eraser 2 of the present utility model is two-way, about advance and can erase the board; Can lift pressing plate when blackboard eraser is no, make the wiping head of blackboard eraser leave the glass face of blackboard, and can unload flushing, reuse.

Claims

1, a kind of dust-free blackboard is made up of white minute surface plate glass blackboard (3) and device for blackboard eraser (2), it is characterized in that:

A, be brushed with white paint in the back of mirror plate glass (3), stud with four frames (4) on four limits of mirror plate glass (3), following and following upper frame edge is provided with the slideway (5) of device for blackboard eraser (2) at upper ledge; In up and down slideway, be slidingly fitted with device for blackboard eraser (2);

B, described device for blackboard eraser (2) are made up of following structure: the upper end at axis (8) is fixed with cross tube, and pulley (10) is installed on cross tube, is fixed with sheer pole in the lower end of axis (8), and pulley is installed below sheer pole; Slide in pulley blackboard eraser slideway (5) lining following at the blackboard upper ledge and following upper frame edge; In the both sides of axis (8) respectively by serving as that rotating four connecting rods of axle (13) are fixed with the blackboard eraser clamping plate with axis (8), accompany blackboard eraser (11) in the blackboard eraser clamping plate, on cross tube, be fixed with conduit (6), center fixed at conduit has water container (1), conduit (6) leads to the blackboard eraser clamping plate of axis (8) both sides respectively, and on conduit (6) water valve (7) is installed respectively; By middle two of connecting rod (13) control blackboard eraser clamping plate pressing plate (9) up and down is installed in the axis both sides, spring (12) is installed in the back of the connecting rod (13) that pressing plate (9) is installed; Rear side at axis (8) is equipped with rubber flap (15) by connecting plate (14).

2, dust-free blackboard according to claim 1 is characterized in that: can fluorescent lamp be housed in Glass whiteboard blackboard (3) back.