JPS5848169B2 - Suction section vibration device for blackboard wipe cleaners, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to improve the suction port of a vacuum type blackboard wiper cleaner, etc., and to increase the cleaning efficiency.

In conventional blackboard wipe cleaners, the suction port is approximately 5 mm wide.
Place a blackboard wipe on the slit hole of It11L,
Cleaning was done by sucking chalk powder through the slit-shaped suction port, but it was inefficient because it relied only on air flow, and it even removed chalk powder that got inside the blackboard cloth. If this was attempted, a large amount of power consumption would be required, and the height would also have to be moved above the suction opening.

The present invention aims to solve the above-mentioned conventional drawbacks, and to provide a blackboard wiping cleaner that has a very simple structure, can be used in the same manner as conventional methods, and can greatly improve its performance. An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, numerals 1 and 2 are the bodies of a blackboard wiper cleaner, which can be separated into upper and lower parts, respectively, and are fixed with screws.

A filter section and a fan motor section are housed in these bodies, and the filter section has a rubber packing 3 at the open end.
It consists of an outer bag 4 to which is fixed, and an inner bag 5 stored therein.

The fan motor section consists of a commutator motor 6 and a capacitor 7 serving as a driving source, and a fan 8 attached to the shaft thereof.

Electric power to the motor is sent from a power plug 9, passes through a switch 10, and flows through a fuse 11.

Further, a slit hole 12 is provided at the bottom of the lower body 2 so that the air sucked in by the fan 8 can exit.

Reference numeral 13 denotes an upper lid, which is provided with a suction port 14 for sucking chalk powder and a stop plate 15 below the suction port 14.

16 is a screw for fixing the stop plate 15.

FIG. 2 is a sectional view of the suction port, and 17 is an elastic body (rubber) related to the present invention.

Fig. 3 is a bottom view of the suction port when the stop plate 15 is removed, and Fig. 4 is a drawing with only the elastic body 17 taken out. The rubber used here has a smaller spring constant than the other two.

In addition, both ends of the elastic body 170 are fixed by screwing two stainless steel plates 18. After stretching the elastic body 17 a little, the stainless steel plates 18 are attached to the guide 19 of the suction port.
It is installed by hooking it on the end of the

20 is a screw hole for fixing the stopper plate 15.

In the above configuration, when electric power is supplied to the motor 6, the fan 8 rotates, and air is sucked in from the suction port 14, passes through the filter parts 5, 4, passes through the fan 8, and then reaches the lower body 2.
It exits through the slit hole 12 provided at the bottom of the.

When air is sucked in through the suction port 14 in this way, as shown in FIG. The elastic bodies on both sides are pulled, but the deflection is greater than that of the elastic bodies on both sides.

Therefore, the gap between the elastic bodies on both sides and the elastic body in the center becomes wide, and air flows in from there, so the degree of vacuum at the bottom of the suction port decreases, and due to the restoring force of the elastic body, it bends upward. Then it returns to the initial state.

In this way, the three elastic bodies begin to vibrate up and down, but if the spring constant of the middle elastic body is made smaller than the other two, they will interfere with each other and vibrate very easily. 3
Compared to installing an elastic body with the same spring constant as the book, a much larger amplitude and force can be obtained.

In this state, when a blackboard cloth is placed on top of the suction port 14 and slid back and forth, the vibration of the elastic body 17 will knock the blackboard cloth, removing chalk powder adhering to the blackboard cloth and the inside of the cloth. Even the chalk powder that has gotten into it is knocked out,
released into the air.

Since the chalk powder once released into the air is very light, it can be sucked into the filters 4 and 5 with a slight suction force.

According to the results of experiments conducted in the laboratory, the conventional product requires the chalkboard wipe to be slid over the suction port 14 six times or more in order to be cleaned, whereas the blackboard wiper according to the present invention cleans the chalkboard in just two passes. Ta.

Furthermore, while the conventional product consumes 500 W of power, the present invention consumes only about 180 W to achieve the same performance.

Furthermore, as shown in FIG. 6, if the elastic body 17 according to the present invention is applied to the suction nozzle of a vacuum cleaner, when cleaning a carpet, etc., the elastic body 17 can remove small dirt caught between the hairs. The vibrations cause it to be thrown into the air, making it easier to be sucked in.

It is especially effective in cleaning deep-pile carpets, and what was considered impossible with conventional vacuum cleaners becomes possible by simply applying the present invention to the suction port of the nozzle.

In this way, the present invention provides two or more elastic bodies in the suction port,
At least one has a spring constant different from the others, so it is easy to vibrate and can generate a large amplitude and force, and these vibrations can be used to strike the blackboard carpet and remove chalk powder and small debris. Since it is suspended in the air and sucked in, performance can be greatly improved compared to conventional ones.

Furthermore, the structure is very simple as it only requires an elastic body.
Moreover, it can be produced at low cost, and its industrial value is extremely high.

[Brief explanation of the drawing]

Fig. 1 is an exploded cross-sectional view of a blackboard wipe cleaner showing an embodiment of the present invention, and Fig. 2 is a suction port portion shown in Fig. 3.
3 is a bottom view of the suction port, FIG. 4 is a perspective view of the elastic body, FIG. 5 is a diagram explaining the principle of vibration, and FIG. 6 is a floor suction device in another embodiment. FIG. 14... Suction port, 17... Elastic body.

Claims (1)

[Claims] 1. Two or more string-like elastic bodies are provided at the suction port of a chalkboard cleaner, etc. that cleans by suctioning air, and at least one has a spring constant different from the others, and the elastic body vibrates with the air flow. A suction part vibration device for a blackboard wiper, etc., characterized in that: