JPS5946798B2 - blackboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blackboard, in which a cleaner function is added to the chalk dust receptacle at the bottom of the blackboard, so that chalk dust accumulated in the chalk dust receptacle and chalk dust attached to the blackboard cloth can be cleaned. It is.

Conventionally, there is a blackboard wiper that cleans chalk powder generated from a blackboard.

However, as the name suggests, this blackboard wipe cleaner can only clean blackboard wipes, and out of all the chalk dust generated from blackboards, it cannot clean at all the approximately 50 parts of chalk dust that accumulates in the chalk dust receptacle of this blackboard. The present invention has been made in view of these points, and one embodiment thereof will be described below with reference to the drawings.

In the figure, 1 is a blackboard, and 2 is a chalk powder receptacle provided at the bottom of the blackboard so as to protrude forward.

The upper surface of this chalk powder receptacle 2 is recessed in a concave shape as shown in FIG. 2, and the recess 3 is shaped to follow the wiping surface of a blackboard wiper (not shown).

Reference numeral 4 denotes a cleaner body provided at the lower part of the chalk powder receiver 2, which is positioned at the lower part of the chalk powder receiver 2 by a blackboard mounting wall 5, a screw 6, and an L bracket 7 fixed thereto.

The cleaner main body 4 has an electric blower 8 for sucking dust at the rear thereof, and an opening 9 penetrating vertically in the front thereof.

A bottomed cylindrical filter 10 is removably fitted into this opening 9 from its lower surface.

The filter 10 is constructed by fitting a bottomless cylindrical inner bag 10b made of polyurethane or the like inside an outer bag 10a, and attaching a rubber bag 10c to the opening edge of the outer bag 10a. A rigid bottomed cylindrical filter frame 11 is fitted to the outer periphery of the filter frame 10a.
The rubber bag 10c is fitted onto the upper opening edge of the filter frame 11 and integrated with the filter frame 11.

This filter frame 11 is fitted from below the opening 9 and attached to the cleaner book (2$4), and the bag rubber 10c at the top is pressed against the bottom surface of the chalk powder receiver 2, and the bottom plate section at the bottom 11a closes the opening 9 of the cleaner body 4.

12 is a ventilation opening provided on the outer periphery of the filter frame 11; 13 is a stopper pivotally connected to the lower surface of the cleaner body 4;
It is located on the lower surface of the bottom plate of the filter frame 11 and holds the filter frame 11.

14 is a handle attached to the bottom plate portion 11a of the filter frame 11, and 15 is an opening provided in the chalk powder receiver 2, which is formed to face the upper opening of the filter 10.

16 is an exhaust hole provided on the lower surface of the cleaner main body 4.

In the above configuration, when the electric blower 8 of the cleaner body 4 attached to the lower part of the chalk powder receiver 2 is operated, the chalk powder is sucked into the blackboard 1 through the opening 15 provided in the chalk powder receiver 2.

Therefore, in this blackboard 1, the chalk powder receiver 2 is
If the upper surface part is slid from the end toward the opening 15, the chalk powder accumulated in the chalk powder receiver 2 will be removed from the opening 1.
5. It is suctioned and can be easily cleaned.

Then, by sliding the blackboard blank over the opening 15 of the chalk powder receiver 2, the blackboard blank can be cleaned at the same time.

On the other hand, the chalk powder sucked through the opening 15 is collected by the filter 10, but if the filter 10 becomes heavily contaminated by the chalk powder, remove the stopper 13 by rotating it laterally, and hold the handle 14. Filter frame 11
All you have to do is remove it from the cleaner main body 4 and clean it.

At this time, in this embodiment, the filter 10 is connected to the cleaner body 4.
Since it is removed from the bottom of the cleaner body 4,
is provided at the end of the chalk powder receptacle 2, so it can be easily removed even if there is an obstacle next to it.The filter 10 is held by the filter frame 11, so hold the handle 14 and remove the filter. Cleaning can be done simply by lightly touching the frame 11 against a wall or the like.

In this case, the filter frame 11 causes self-excitation and filter 1
Since it hits zero, it is possible to remove dust efficiently.

As described above, according to the present invention, the chalk powder accumulated in the chalk powder receptacle of a blackboard can be easily cleaned, and the blackboard can also be cleaned at the same time, and its industrial value is enormous.

[Brief explanation of the drawing]

FIG. 1 is a side view showing essential parts of a blackboard in an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a sectional view taken along the line A--A in FIG. 2. 1...Blackboard, 2...Chalk powder receiver,
4... Cleaner body, 8... Electric blower, 9... Opening, 10... Filter, 11... Filter frame, 15・・・・・・
Opening.

Claims (1)

[Scope of Claims] 1. A cleaner main body having an electric blower for dust suction is attached to the lower part of the chalk powder receiver for a blackboard, and a filter for collecting dust is detachably provided to the cleaner main body, and the chalk powder receiver is attached to the lower part of the chalk powder receiver. A blackboard characterized in that the chalk powder receiver is pressed against the filter, and an opening for sucking chalk powder is provided in the chalk powder receiver facing the filter. 2. A patent characterized in that the cleaner body is provided with an opening that passes through the cleaner body from above and below, and the filter is held by a rigid frame and is fitted into the opening from below so as to be in pressure contact with the chalk powder receptacle. A blackboard according to claim 1.