DE19730566C1 - Device for wet wiping of wall blackboards used in schools - Google Patents

Abstract

The device comprises a sponge (4) and a water wiping device (3), extending over the width of part of the blackboard (20) on which writing is effected. The blackboard can be wiped clean through a single movement of the device. The sponge is fixed in a pivotable accommodation (5) which is arranged in a housing that contains a water storage unit (9). The sponge can be operated by a lever (7) that engages on the outside of the accommodation, between a work position, where it locates on the wall blackboard, and a rest position where it is spaced from the blackboard. The housing is formed so that with a movement of the sponge between the rest and work positions the sponge is automatically squeezed. The wiping device is arranged in the upper area of the housing. The housing in the rest position is suspended over the blackboard and is secured by magnets.

Description

School boards are known to be wet with a sponge be wiped and that usually afterwards Draw off water from the table with a water extractor will. Other models, like for example can be used to clean windows and in everyone Housewares stores are made up of Sponge and water remover in one device. Both Vari However, antennas are time consuming because the devices in Ver ratio to the blackboard are small. In addition, the sponge moistened and washed out while wiping the table what takes time again for the Lessons are lost. In addition, one wet hands and possibly even wet and dirty ones Clothes. In addition, the closer order handing over the table when cleaning and also when moving over Wet the sponge from the sink to the blackboard drips and becomes dirty over time, as this ver steaming water leaves the chalk dust The table wiper known from DE-GM 77 06 012 it already enables the board in one movement of the Device and in a second movement the To displace water from the table, which is already too leads to considerable time savings.

The device consists of a cleaning bar, on its a sponge corresponding to the width of the board at one end and at the other end an equally wide water supply is attached more firmly. The cleaning bar is over Guide bracket on each side with rollers or glide pieces connected to the side in guide rails the panel is attached so that it can move vertically. On the There is a liquid container on the top of the table, in which the cleaning bar is kept. This should keep the sponge moist and ready for use and make sure the clerk on the blackboard doesn't is hindered by the cleaning bar.  

This table wiper, however, has some of them significant disadvantages.

The cleaning bar must be operated directly with the hands that get wet and dirty. To comes that cleaning and drying two operations required. Wringing out the sponge if it does is even possible, should be even for normal size People become a problem. Even if the board is whole is below, you have to reach over your head and try that Possibly sponge at the edge of the water tank press, where you can get wet very easily if you for example, slipping off the edge with the sponge. This It should be an undertaking with a correspondingly wide bar not be easy either. Then, as a precaution wrestling is avoided, the floor or the Chalk tray wet and the chalks inside wet and useless. It also runs off the rubber streak displaced water also directly on the Floor or in the chalk shelf. When going up or down pushing the board there is a risk that water will come out the liquid container open at the top is running. In addition, that you can't get the dirty water in that container can drain. Another disadvantage is that the Rei sloping bar when pulling down on one side can edge.

The invention specified in claim 1 is Problem underlying the board as quickly as possible with a Clean the device without the floor or the chalk shelf wet, and dry and automatically the sponge to wash out and wring out without directly in with it To come into contact.

This problem is solved by the in claim 1 led characteristics solved.

An embodiment of the invention is in the drawing voltage and is described in more detail below.  

Show it

Consisting of Figs. 1a, 1b and 1c assembled Fig. 1, the left side view of the above the panel (20) hanging panel wiper and the guide rod (12) behind the panel (20). The guide rod ( 12 ) is mounted with the panel ( 20 ) on the upper and lower edge of the panel ( 20 ) by means of a correspondingly shaped shaped steel ( 21 ). Also to be seen is the connecting arm ( 10 ) on the left-hand side, which connects the table wiper and slide or ball bearing bush housing ( 11 ) as it passes by the table ( 20 ). Here is the slide or ball bearing bush housing ( 11 ), secured on the magnet ( 17 ), at the top and the balance weight ( 13 ) at the lowest point.

Fig. 2a shows the rear view of the wiper and the figure assembled from Figs. 2b and 2c the side view from the left of Fig. 1, for reasons of symmetry only the left side of the table is shown from behind. Here you can see the connection between the slide or ball bearing bush housing ( 11 ) and the counterweight ( 13 ), via a rope or belt ( 15 ). The rope or belt ( 15 ) runs over a fixed roller ( 16 ) which is fixedly mounted on the upper shaped steel ( 21 ). Also visible is the guide rod ( 14 ) on which the counterweight ( 13 ) is attached so that it can move vertically.

Fig. 3 of the table wiper from the side view from the left in section (without side part) and in Arbeitsbewe movement down.

Fig. 4 of the panel wiper from the side view from the left in section (without side part), after cleaning the panel ( 20 ), on the way up to the starting position, with the housing cover ( 2 ) folded.

In Fig. 3 it can be seen how the board ( 20 ) is wiped with the sponge ( 4 ) and dried with the water remover ( 3 ) at the same time when the table wiper is pulled down by the lever ( 7 ).

As shown in Fig. 4, the lever ( 7 ) is rotated counterclockwise ninety degrees after the wiper arrives at the lower end of the board. The sponge ( 4 ) is turned into the housing and immersed in the water ( 9 ). The table wiper is pulled upwards again to the starting position by the handle ( 7 ). Due to the friction of the water extractor ( 3 ) on the panel ( 20 ), the housing cover ( 2 ) folds in so that the water extractor ( 3 ) offers as little resistance as possible and, after passing through the upper end of the panel, folds due to two small tension springs ( 22 ), which are connected to the housing cover ( 2 ) at the left and right ends inside the housing, return to the horizontal position.

Fig. 1, the board ( 20 ) should be cleaned again, the lever ( 7 ) is rotated 90 degrees clockwise in relation to the position in Fig. 4, where it is then due to two stoppers ( 18 ), the left and right are attached to the outside of the housing, is stopped. The sponge ( 4 ) is pressed out at the sloping section of the housing shape ( 8 ) and folded out through the opening in the housing to the panel ( 20 ), where it then protrudes a little beyond the edge of the panel in order to ensure sufficient contact pressure when wiping. The panel wiper now only has to be pulled down using the lever ( 7 ).

Fig. 4 the water supply ( 9 ) must be drained from time to time through a drain in the housing base ( 19 ), which is closed by a plug, a drain tap or the like. With low use, it is also sufficient to only replenish the water supply ( 9 ). This can be done via the front with the sponge ( 4 ) folded in, or through the opening in the top of the housing with the cover closed ( 2 ).

An advantageous embodiment of the invention is in Claim 2 specified. Continuing education according to Pa claim 2 allows you to use the device at any time immediately because there is a fixed place over the Blackboard has where it always hangs ready for use. It is au can also be operated with little effort, since it is its own weight is balanced and the sponge over you  Lever is wrung out.

The advantages achieved with the invention are special in that the whole table surface at once cleaned in a movement of the table wiper down and the water is drawn off and that the sponge auto is washed out and wrung out without the user of the board get in direct contact with him, which saves time and is more convenient. You don't get wet hands, and that the surrounding area of the board remains clean and dry since all the water displaced by the water extractor from the Sponge is picked up. The device is always in use ready for use and easy to use, because all gears can be carried out using a handle.

Claims (2)

1. Device for wet wiping of blackboards (school blackboards) with a sponge and a water remover, the device extending at least across the width of the writable part of the blackboard, and z. B. by a single movement of the device along the wall board, the entire wall board can be wiped, characterized by
a housing ( 1 ) having a water supply, in which the sponge ( 4 ), which is fastened to a pivotable sponge holder ( 5 ), is arranged,
wherein the sponge ( 4 ) by a lever ( 7 ) acting on the outside of the sponge receptacle ( 5 ) between a working position in which the sponge ( 4 ) lies against the blackboard and a rest position in which the sponge ( 4 ) is off Wall board is spaced, is pivotable,
training the housing ( 1 ) in such a way that the sponge ( 4 ) is automatically expressed when the sponge ( 4 ) moves between the rest position and the working position,
and an arrangement of the water extractor ( 3 ) in the upper region of the housing ( 1 ). 2. Device according to claim 1, characterized in that:

• - The housing ( 1 ) is attached to connecting arms ( 10 ), which lead left and right past the panel and are each attached to a slide or ball bearing bush housing ( 11 ), each vertically movable on a bearing guide rail ( 12 ) attached behind the panel are attached,
• - The weight of the housing ( 1 ) with its contents and the connecting arms ( 10 ) and bearings attached to it are balanced by two counterweights ( 13 ), each on the left and right behind the panel ( 20 ) and next to the bearing guide rails ( 12 ) , vertically movable on guide rails ( 14 ) running, by ropes or belts ( 15 ), which run over a fixed roller ( 16 ), are firmly connected to the slide or ball bearing bush housings,
• - The housing ( 1 ) at rest above the board ( 20 ), secured to magnets ( 17 ), hangs.