JPS6018392A - Chalk powder cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] fal This invention erases chalk powder adhering to a blackboard (blackboard wipe) by manually wiping it off (wiping off, wiping off) easily, hygienically, and without noise in a sealed small box. It is about the method.

Conventional appliances used the same principle as a vacuum cleaner to suck up chalk powder, or they were placed in a large box and used to knock off chalk powder. In the former case, the motor must be installed internally, and chalk powder adheres to the inside of the bag, easily causing clogging.

In addition, invisible fine chalk powder may spew out from the exhaust port or the edge of the bag, making it unhygienic, or causing a harsh noise during operation (h), or having to scrub your hands to dispose of the chalk powder in the bag (if you do not use it outdoors). Various disadvantages are noticeable, such as the primitive method of opening the bag and taking out the powder, and the fact that it is not cheap because it has a powerful motor inside.

The latter (knock-off type) also has a complex and large-scale structure of parts (rods, handles, etc.) for knocking off.
They make a lot of noise and are not very popular.

(cl) Now, this city was devised by eliminating the various drawbacks mentioned above, and if you explain it along the drawings, it will be as follows.

B. Lid 0 is for moving the spoon back and forth while holding down the blackboard eraser covered with chalk powder with your hand.

It is shaped like a brimmed hat and is deep enough to fit the handle of a commercially available blackboard eraser and expose the part covered with chalk powder.

The length of the brim from front to back and left to right is 29α x 14cm as shown in the drawing.
That's about it. This brim allows the blackboard eraser to be tightly attached to the top of the small box without being exposed.
The chalk powder is wiped off by wiping it off at the top of the small box.

In other words, when you rub a blackboard eraser against the bottom-shaped grid surface (mesh surface) using something like a recessed grater with holes and moving the lid back and forth about 10 times, the chalk powder will completely separate and fall.

The depth of this bottom-shaped part is slightly shallower than the thickness of the part of the blackboard wipe that has chalk powder on it, as it is useless unless the blackboard wipe is held down by the lid.The width is just enough to fit the blackboard wipe, and the front and back lengths are as follows. Because the blackboard wipe must be moved back and forth in the bottom of the ship, it is slightly longer than the blackboard wipe.

In other words, the size of the bottom of the ship is 2.5cm x 7σ x 22cm
That's about it.

Now, regarding the lattice surface (mesh surface) of the bottom of the ship, since this is used to wipe away chalk powder, as shown in the figure, use a curved square bar of the same shape as the cross section of the cloth surface of a blackboard wiper.
All you have to do is pick up about a book. The diameter of the square stick is around 5 mm.

・The small drawer ■ is a receptacle for chalk powder that falls off from the blackboard cloth.

2. The outer box (2) is for assembling the above three parts (namely, the lid (2), the bottom-shaped lattice surface (2), and the small drawer (3)), and is also for preventing chalk powder from scattering.

The material of the HO9 is plastic, wood, metal or
Even a combination of these can make a huge contribution to the blackboard world, as it is cheaper and easier to manufacture than the suction type using a motor.

Furthermore, the principle of no participation can also be used to transform the so-called grooves at the bottom of the blackboard into tansoku kakusenmen.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the present invention. FIG. 2 is a sectional view of the present invention seen from the front. FIG. 3 is a cross-sectional view of the present invention seen from the side. ■ Hat-shaped lid with a hat. ■ is a ship bottom type lattice surface (mesh surface), ■ is a small drawer for chalk powder, ■ is the outer box.

Claims (1)

[Scope of Claims] The main point of the present invention is to seal a blackboard eraser with chalk powder on it in a small box, and to easily move the blackboard eraser manually from the outside to remove the chalk powder. For this purpose, the following two points about the apparatus 11 are within the scope of the claims. (a) A movable hat-shaped lid that holds the blackboard eraser in place. A) A bottom-shaped lattice surface (mesh surface) that wipes away chalk powder from the blackboard eraser.