CN2325232Y

CN2325232Y - Self-erasing writing board

Info

Publication number: CN2325232Y
Application number: CN 98209374
Authority: CN
Inventors: 程健
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-21
Filing date: 1998-04-21
Publication date: 1999-06-23
Anticipated expiration: 2008-04-21

Abstract

The utility model relates to a writing board which can clean a board surface automatically. The utility model comprises a square frame provided with a turning shaft which supports and spreads the writing board and drives the board surface to move cyclically. The writing board is made of soft belts which are connected with each other end to end. One surface of the writing board is exposed to the areas surrounded by the square frame. The back surface is provided with at least one cleaning shaft. The cleaning shaft and the writing board abut on each other. The board surface is erased when the cleaning shaft and the writing board slip relatively. The back surface of the writing board is sealed. Chalk dust is collected by a dust cage on lower part of the writing board. On one hand, the utility model well solves the problem of cleaning automation, and on the other hand, the utility model solves the problem of chalk dust collecting. The utility model can be used as not only a writing board but also a projection screen and a white board, and can control the operation of the board surface by being matched with a remote controller.

Description

The self-erasing type clipboard

The utility model discloses a kind of teaching aid, specifically is that a kind of can the wiping automatically tried clean clipboard and projection screen.

Existing blackboard or board, write with chalk or organic pigment pen, all adopt the mode of manual wipping to clean, wipe hard, time-consuming on the one hand, on the other hand for the blackboard of writing with chalk, produce the phenomenon that chalk dust flies upward during because of wiping, thereby had a strong impact on the healthy of teachers and students.

At present, national educational system is the daily teaching of school and college particularly, all adopts blackboard, chalk as main teaching aid, and this teaching aid has its lot of advantages certainly, and is good as knowledge degree of debating, and writes conveniently low price.The board of white is in general R﹠D institution, company or department use some morely relatively, but it has certain limitation, as: it is undesirable to know degree of debating in the scope of classroom, can only be used among a small circle in, price is more expensive, organic pigment causes environmental pollution easily, in company, R﹠D institution's slide projector or projecting apparatus are used also comparatively generally, and this uses projection screen again.In some unit, often in classroom, existing blackboard has blank again, also has magic lantern or projection, and both the side of occupation of land seemed mixed and disorderly again, and to the user, display effect is also not ideal enough.

Primary and foremost purpose of the present utility model be exactly a kind of wiping automatically of design and help the concentrated clipboard of dust.

For achieving the above object, the technical solution adopted in the utility model is: the self-erasing type clipboard, two relative frame places on the quadra are provided with rotating shaft, be arranged with the clipboard that end to end soft band constitutes on it, clipboard rotates to circulate by rotating shaft support exhibition and with rotating shaft and moves, the wide cut of clipboard is mutually attached with shaft length, its one side is open in the zone that framework surrounds, its back side is provided with a wiping axle at least, wiping axle and clipboard are abutted together and are parallel to each other with above-mentioned rotating shaft, and relative motion therebetween is to slide.

As shown from the above technical solution, general frame is installed along body of wall, the writing of on the clipboard front, writing, rotation with rotating shaft moves to the back side, when the wiping axle rotates in the process of relative slip with clipboard with the writing wiped clean, dust is by the control of dust case collection of below, one side has solved the problem of automatic wiping, on the other hand dust is collected effectively, avoided dust from flying.

Description of drawings

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

Fig. 2 is the A-A cutaway view among Fig. 1.

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment

As shown in Figure 1, on the quadra relative on, two frame places are provided with rotating shaft (1) down, (5), be arranged with the clipboard (4) that end to end soft band constitutes on it, clipboard (4) is by rotating shaft (1), (5) support exhibition and with rotating shaft (1), (5) rotation and circulation are moved, referring to Fig. 2, the wide cut of clipboard (4) and rotating shaft (1), (5) length is mutually attached, its one side is open in the zone that framework surrounds, its back side is provided with a wiping axle (2) at least, wiping axle (2) and clipboard (4) be abutted together and with rotating shaft (1), (5) parallel, relative motion therebetween is to slide.

As shown in Figure 2, rotating shaft (1), (5) lay respectively at upper and lower case (7), (12) are located, wiping axle (2) axis body is provided with wear-resisting wiping batt, the switched in opposite of wiping axle (2) and rotating shaft (1), (5), collect dust for convenience, the cross section of case (12) is a U-shaped, and case (12) is divided into left and right two halfbodies and detachably connects with framework, this structure is convenient to dust is outwelled, and it also can make three halfbodies or four halfbodies.Referring to Fig. 1, an end of top rotating shaft (5) and wiping axle (2) is connected with micromachine (8), (10), both switched in opposite.

Simultaneously referring to Fig. 1,2, top rotating shaft (5) top is provided with a horizontal rotating shaft (6), be wound with the cloth body (13) that white soft material constitutes on it, the two ends of rotating shaft (6) are provided with wind spring, cloth body (13) is along extracting out in the horizontal slot of offering on the upper encloser (7), the lower closure (12) of extending downwards and fixedly being articulated in framework is located, and it can be used as blank and writes with the pigment pen, also can be used as the projection screen use.

The position of control clipboard (4) clipboard face one Electric Machine Control button (11) arranged, so that also can be equipped with remote controller below book letter stencil frame left.

The general work process is such: when having write delegation or a few row, when needing to adjust writing position, can start the button (11) or the remote controller of black and white plate left surface, whole writing surface is upwards rotated.Need to start earlier wiping rotating shaft (2) before rotating writing surface, delay time slightly, rotate clipboard (4) again, can guarantee wiping effect like this by control circuit.

This clipboard (4) has the usable floor area of two general blackboard area sizes nearly, will keep because turn to the most contents of going at the back side, can the front content written be refunded by changing the direction of rotation of motor (8) where necessary.

Stressed and allow when writing for fear of clipboard (4), a support plate (15) is set in the inboard of clipboard (4), its two ends are fixed on framework two vertical edge places.Clipboard (4) entirely is affixed on the support plate (15), and in the time of can guaranteeing to write like this, clipboard (4) has good stable.

Claims

1. self-erasing type clipboard, it is characterized in that: two relative on quadra frame places are provided with rotating shaft (1), (5), be arranged with the clipboard (4) that end to end soft band constitutes on it, clipboard (4) is by rotating shaft (1), (5) support exhibition, and with rotating shaft (1), (5) rotation and circulation are moved, the wide cut of clipboard (4) and rotating shaft (1), (5) length is mutually attached, its one side is open in the zone that framework surrounds, its back side is provided with a wiping axle (2) at least, wiping axle (2) and clipboard (4) pull be close together and with rotating shaft (1), (5) parallel, relative motion therebetween is to slide.

2. self-erasing type clipboard according to claim 1, it is characterized in that: rotating shaft (1), (5) lay respectively at upper and lower case (7), (12) are located, wiping axle (2) axis body is provided with wear-resisting wiping batt, the switched in opposite of wiping axle (2) and rotating shaft (1), (5), case (12) cross section that bottom rotating shaft (1) is located is a U-shaped, it is split type and detachably connect with framework that case (12) is divided into left and right two halves, and an end of top rotating shaft (5) and wiping axle (2) is connected with micromachine (8), (10).

3. self-erasing type clipboard according to claim 1 and 2, it is characterized in that: top rotating shaft (5) top is provided with a horizontal rotating shaft (6), be wound with the cloth body (13) that white soft material constitutes on it, the two ends of rotating shaft (6) are provided with wind spring, and cloth body (13) is along extracting out in the horizontal slot of offering on the upper encloser (7).

4. self-erasing type clipboard according to claim 1 and 2, it is characterized in that: the back side of framework is sealed by a plate body (14), be provided with support plate (15) between clipboard (4) front and rear panel face, support plate (15) is attached to the inboard of clipboard (4) front clipboard face.