JPH0563898U - Electric blackboard wipes - Google Patents

Abstract

(57) [Summary] [Structure] A wiping bullet-proof body with a suction port for chalk powder in the center was attached to the underside of the box-shaped body, and the blackboard was wiped with an electric fan mounted inside the body. The choke powder that sometimes comes out is sucked into the main body and sent to a powder receiving container equipped with a filter such as a resin mesh with a very small mesh, and the air that has passed through the filter is discharged from the air escape window provided on the wall surface of the main body to the outside. In the electric type blackboard wiper which discharge | releases, the impeller rotated by the wind by the said electric fan is arrange | positioned in the said powder receiving container. [Effect] It is possible to prevent clogging of the filter of the powder receiving container for a long period of time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric blackboard wiper.

[0002]

[Prior Art]

 Attach a wiping bullet-proof body with a suction port for chalk powder in the center etc. to the bottom of the box-shaped main unit, and use an electric fan installed inside the main unit to remove the chalk powder that is generated when the blackboard is wiped. Inhaled into a powder receiving container equipped with a filter such as a resin net with a very small mesh, and the air that has passed through the filter is released to the outside from the air escape window provided on the wall surface of the main body. As the blackboard wipes, those shown in, for example, Japanese Utility Model Publication No. 52-57734, Japanese Utility Model Publication No. 53-6346, and Japanese Utility Model Publication No. 48-36933 have been proposed.

However, these conventional electric type blackboard wipers have the following disadvantages when actually used. The reason is that when the chalk powder is blown onto the powder container by the electric fan, the flow of the air is constant, and the chalk powder accumulates at certain locations, causing the filter to clog immediately. is there. Therefore, the filters have to be cleaned frequently, which is extremely troublesome.

Further, in such a state, the chalk powder collected in the powder receiving container flows back and spouts from the suction port of the wiping ammunition body, floating around the blackboard. It becomes dirty and adheres to clothes and must be washed. Also, inhaling choke powder is harmful to the human body.

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of the above points, in which an impeller that is rotated by wind from an electric fan is arranged in the powder receiving container, and the wind from the electric fan is rotated in the powder receiving container by the rotation of the impeller. Directly agitating the chalk powder by spraying it evenly and also by contacting the impeller prevents the chalk powder from being evenly sprayed on the filter and prevents the chalk powder from sticking to the filter, thus clogging the filter. It is intended to provide an electric blackboard wipe that can prevent the above for a long time.

[0006]

[Means for Solving the Problems]

 However, the gist of the present invention is that when a wiping bullet-proof body with a suction port for chalk powder in the center is attached to the lower surface of the box-shaped body and the blackboard is wiped with an electric fan mounted inside the body. Choke powder from the inside is sucked into the main body and sent to a powder receiving container equipped with a filter such as a resin mesh with a very small mesh, and the air that has passed through the filter is discharged to the outside from the air escape window provided on the wall surface of the main body. In the electrically operated blackboard wiper configured as described above, an impeller that is rotated by wind from the electric fan is arranged in the powder receiving container.

[0007]

[Action]

 Next, the operation of the present invention will be described. The chalk powder is sucked into the main body together with the air by the electric fan from the suction port of the chalk powder of the wiping bullet-proof body. The sucked chalk powder is blown into the powder container from the outlet of the electric fan chamber. Then, the chalk powder is captured by the filter of the powder receiving container, and the air passes through the filter and further through the second filter, and is finally discharged to the outside of the main body through the air escape window provided on the wall surface of the main body. Is.

Further, a feature of the present invention is that an impeller that is rotated by wind from an electric fan is arranged in the powder receiving container, and the wind from the electric fan is pulverized by the rotation of the impeller. The chalk powder is uniformly dispersed in the receiving container, and the chalk powder is directly stirred by the contact of the impeller.

Therefore, the chalk powder blown into the powder receiving container from the outlet of the electric fan storage chamber is uniformly sprayed on the filter and is prevented from sticking to the filter. And, this prevents the filter from being clogged for a long period of time.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a perspective view, 2 is a central longitudinal front view, FIG. 3 is a perspective view seen from the lower side of the wiping ammunition debris body, and FIG. 4 is seen from the lower side of the powder receiving container with one lid opened. Fig. 5 is a perspective view of the powder receiving container seen from the upper side, Fig. 6 is a perspective view of the lower side of the main body, Fig. 7 is a perspective view of the black plate dust receiving gutter cleaning aid seen from the upper side, and Fig. 8 Is a vertical sectional view of the same.

In the figure, 1 is a box-shaped main body. Further, the main body 1 is provided with air escape windows 2, 2 ... In appropriate places on its wall surface, and an electric fan 3 is mounted in the center of the inside. A small electric motor 4 drives the electric fan 3. Further, although the small-sized electric motor 4 uses a household power source as the power source in the present embodiment, it goes without saying that it may be of a rechargeable type or a dry battery type.

Reference numeral 5 is a power switch of the small electric motor 4 provided on the top wall of the main body 1. Reference numerals 6 and 6 denote filtration chambers provided in the main body 1, and a filter 7 made of a resin mesh having a very small mesh is stretched at the top opening. Further, the filter portion of the powder receiving container described later is fitted into the bottom openings of the filtration chambers 6 and 6, so that the air passing through the filter of the powder receiving container described later is double filtered. It is a thing. Further, 8 is a housing chamber for the electric fan 3, the bottom is opened, and the peripheral wall is provided with two outlets 9 and 9 for cheek powder.

Reference numeral 10 is a band attached to the main body 1. Reference numeral 11 denotes a connecting member between the main body 1 and a later-described wiping ammunition debris body, which is pivotally supported by a supporting plate 12 projecting on the outer surface of the side wall of the main body 1 in a swinging manner and has a spring 13 at the lower end. The hook portion 11a is urged so as to engage with an engagement protrusion that is provided on the side wall of the wiping bullet-proof body support frame, which will be described later. Reference numeral 14 denotes an engaging hole provided on a side wall of the main body 1 opposite to the connecting tool 11 and an engaging projection provided on a side wall of a wiping and ammunition body support frame described later.

Reference numerals 15 and 15 are powder receiving containers. Further, a suction port 17 is provided on the bottom surface and blow-out ports 18, 18 communicating with the powder receiving containers 15, 15 are provided on the side wall at the center of the frame body 16 that supports both of the powder receiving containers 15, 15. Further, a fitting recess 19 of the electric fan housing chamber 8 is provided.

Further, the powder receiving containers 15 and 15 are provided with a filter 20 made of a resin net having a very small mesh stretched at the top opening thereof, and the portion of the filter 20 is connected to the filtration chambers 6 and 6 of the main body 1. It is designed to fit in the bottom opening.

A lid 21 is attached to the bottom opening of the powder receiving containers 15 and 15 so as to be openable and closable. In this embodiment, the lid 21 is openable and closable by pivotally attaching one end side to the side surface of the frame 16.

Impellers 22 and 22 are rotatably attached to shafts 23 and 23 vertically planted in the lids 21 and 21, respectively. The impellers 22 and 22 are rotated by the wind from the electric fan 3 in the powder receiving containers 15 and 15.

Reference numeral 24 is a wiped bullet crushing body, which is provided with a suction port 25 for chalk powder in the central portion. Further, the wiping ammunition body 24 is attached to the main body 1 via a support frame 26, and the support frame 26 is provided with engaging protrusions 27 and 28 on its side wall.

Reference numeral 29 is an auxiliary tool for cleaning the powder receiving gutter of a blackboard in the form of a nozzle, which is appropriately attached as needed. For attachment, the wiping ammunition body 24 may be inserted into the choke powder suction port 25.

[0020]

[Effect of the device]

 The present invention is configured as described above, and the impeller that is rotated by the wind by the electric fan is arranged in the powder receiving container, so that the choke blown from the outlet of the electric fan accommodating chamber into the powder receiving container. The powder is evenly sprayed on the filter and prevented from sticking to the filter. Therefore, the clogging of the filter can be prevented for a long time, and the trouble of cleaning the filter as frequently as the conventional product can be eliminated. In addition, unlike the conventional products, the chalk powder does not flow back and spout from the suction port of the wiping ammunition body, and the problems such as stains on the surroundings and adhesion to clothes can be solved.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a central longitudinal front view of an embodiment of the present invention.

FIG. 3 is a perspective view of the wiped bullet fold body as seen from below.

FIG. 4 is a perspective view of the powder receiving container with one lid opened, as viewed from below.

FIG. 5 is a perspective view of the powder receiving container as viewed from above.

FIG. 6 is a perspective view seen from the lower side of the main body.

FIG. 7 is a perspective view of an auxiliary tool for cleaning the dust receiving gutter on the blackboard as viewed from above.

FIG. 8 is a central longitudinal cross-sectional view of an auxiliary tool for cleaning a dust receiving gutter on a blackboard.

[Explanation of symbols]

 1 Main body 2 Air escape window 3 Electric fan 4 Small electric motor 5 Power switch 6 Filtration chamber 7 Filter 8 Electric fan accommodating chamber 9 Blowout port 15 Powder receiving container 16 Support frame for powder receiving container 17 Suction port 18 Blowout port 19 Electric fan accommodating Fitting part of the chamber 20 Filter 21 Lid of powder receiving container 22 Impeller 23 Shaft of impeller 24 Wiping bullet debris body 25 Choke powder suction port 26 Support frame of wiping bullet debris body 29 Cleaning of blackboard dust gutter Aids

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[Procedure amendment]

[Submission date] November 30, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Fig. 2]

[Figure 3]

[Figure 7]

[Figure 1]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 8]

Claims (1)

[Scope of utility model registration request] 1. A choke that is produced when a blackboard is wiped by an electric fan installed in the box-shaped main body by attaching a wiping bullet-proof body having a suction port for chalk powder in the center thereof to the box-shaped main body. The powder was inhaled into the main body and sent to a powder receiving container equipped with a filter such as a resin mesh with a very small mesh, and the air passing through the filter was released to the outside from the air escape window provided on the wall surface of the main body. The electric blackboard wipe is characterized in that an impeller that is rotated by wind from the electric fan is arranged in the powder receiving container.