KR20120020785A - Fabrication method of friction system blackboard eraser - Google Patents

Abstract

PURPOSE: A manufacturing method of a friction type eraser is provided to be operated with moderate rotation ratio of six rollers for absorbing chalk powder, and a pair of roller for removing chalk letter, thereby not needing space for mounting a motor. CONSTITUTION: A manufacturing method of a friction type eraser comprises a friction roller(1), a chalk powder hitting roller(9a), a chalk powder removing roller(40a), a driving gear(2), a fan for absorbing chalk powder, a filter, a chalk powder container, and a main case. When the friction type eraser deletes the chalk letter on a blackboard, the driving gear, chalk powder removing roller and the chalk powder hitting roller are rotated by driving powder generated by friction, thereby removing chalk powder.

Description

Fabrication method of friction system blackboard eraser}

The present invention relates to a mechanical blackboard eraser using a friction difference, and more specifically, by using a blackboard eraser made of a cloth to erase the letters written in chalk so as to remove the letters by hand and a motor equipped with a manual method. Although an electric method of removing the droplets by inhaling the powder (chalk powder) as a driving force or rotating the roller with a brush has been proposed, in the present invention, the driving force is generated by friction between the blackboard surface and the rotating body without using a motor. It is about a mechanical blackboard eraser which can erase letters automatically and collect dust efficiently.

In general, a manual eraser is used to erase letters by holding and moving a rectangular eraser made of cloth. Such a manual method has a problem in that it removes the droplets in the erase process and deleteriously affects the health of the human body, and also uses an inhalation type stripping apparatus that is hit by a wall or the like to remove the droplets attached to the cloth. Recently, various electric methods have been proposed, such as the use of a motor to suck up the droplets by using them as a driving force or to remove the droplets by rotating the roller with a brush attached. However, such electric methods require space for mounting the motor on the board eraser. As a result, there is a problem that the bulky, complicated structure and the price increase, so that a new way of erasing the blackboard eraser is required.

The present invention devised a blackboard eraser mechanically by a friction method instead of an electric method using a motor to solve the above problems. Therefore, it is an object of the present invention to provide a blackboard eraser that is easy to reduce costs as well as less trouble and repair.

 In order to achieve this purpose, it is characterized by replacing the role of the motor by the driving force by the frictional force of the blackboard surface and the blackboard eraser.

Chalkboard eraser according to the present invention can be achieved by rotating a roller with a plurality of gears having a different rotation ratio in engagement with the friction difference by the frictional force of the friction surface and the blackboard surface, more specifically to remove the chalk lettering of the blackboard In order to effectively suck the pair of rollers and the removed droplets, the six rollers were driven at an appropriate rotation ratio.

As described above, the present invention, unlike the electric system, does not require a space for mounting the motor on the blackboard eraser because it is a mechanical type, so that the volume is small, the structure is simple, and the price is low. . In addition, the electric motor is required to rotate the motor, so the battery consumption is fast, there is a disadvantage that the frequent replacement of the battery is required, but in the case of the present invention solves these disadvantages because the use of the friction force instead of the generation of the driving force. Compared with the electric method, the mechanical method due to the friction difference is relatively small and the repair is easy even if a failure occurs. Therefore, the reliability of the product is expected to be greatly improved.

1 is an overall configuration diagram of a friction type blackboard eraser according to an embodiment of the present invention.
Figure 2 is a block diagram showing a coupling state of the gear and the roller according to an embodiment of the present invention
Figure 3 is a block diagram showing the rotation direction and the coupling state of the roller removal of the separation and separation of hair according to a preferred embodiment of the present invention
Figure 4 is a detailed configuration of the stripping roller according to a preferred embodiment of the present invention
Figure 5 is a side view of the friction board eraser according to a preferred embodiment of the present invention
* Description of the symbols for the main parts of the drawings *
1: friction roller 2: drive gear
5a: left outer roller gear
6a: left inner roller gear
8a: Left fractional hair roller gear
8b: Central right fractional hair roller gear
9a: left outer fractional hair roller
26: central fractional suction inlet
27a: collection bin
29: microfiber filter unit
40a: Left fraction removal roller
40-3: Roller Shaft

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(Example)

Figure 1 shows the overall configuration according to a preferred embodiment of the present invention, Figure 2 shows a combined state of the roller and the gear. In the present invention, the friction type blackboard eraser is in close contact with the eraser on the surface of the blackboard in order to erase the letters of the blackboard and moves from left to right, the friction roller (1) of the oval groove 21 formed in the body by friction with the surface of the blackboard The drive gear 2 coupled to the friction roller 1 is engaged with the left secondary gear 3a while moving to the left end. Since the friction roller 1 rotates clockwise to generate the driving force by the frictional force, the left secondary gear 3a, which is engaged with the drive gear 2 attached to the friction roller 1, rotates clockwise, is half Rotate clockwise. The left secondary gear 3a rotates the left tertiary shaft gear 4a-1 located on the rear of the left tertiary gear 4a clockwise, and the left side is attached to the left tertiary gear 4a-1. The third gear 4a also rotates clockwise. The left tertiary gear 4a rotates the left outer roller gear 5a and the left inner roller gear 6a counterclockwise while the two outer and inner spinnerets are attached to the roller, and at the same time, the left quadrature gear 7a is rotated. It rotates counterclockwise, and the left quadrature gear 7a also rotates the central left fractional hair roller gear 8a-1 and the central left fractional hair roller clockwise. The center left spinner roller gear 8a has the center right spinner roller roller gear 8b-1 and the center right spinner roller rotating the gear 8b counterclockwise, and the center right spinner roller roller 8b is rotated counterclockwise. The right quadrature gear 7b meshing with -1) rotates the right tertiary gear 4b counterclockwise while rotating clockwise. The right tertiary gear 4b rotates the right outer roller gear 5b and the right inner roller gear 6b in which the outer and inner two split hairs are attached to the roller in a clockwise direction, and the right tertiary gear 4b The right third axle gear 4b-1 attached to the back rotates the right secondary gear 3b clockwise. Therefore, when the friction board eraser is moved from left to right, the left spinneret removal roller 40a coupled to the left secondary gear 3a rotates counterclockwise by changing the direction of the gear composed of several gears and adjusting the rotation ratio. Since the right spinneret roller 40b coupled to the right secondary gear 3b rotates in a clockwise direction, the two left and right spinneret rollers rotate inward to move the tracker removed from the surface of the board upwards. .

   In the present invention, the friction roller 1 moves to the right end of the elliptical groove 21 formed in the main body by friction with the surface of the blackboard even when the friction type blackboard eraser is in close contact with the eraser on the surface of the blackboard. At the same time, the friction roller 1 rotates in a counterclockwise direction and at the same time engages with the right secondary gear 3b, while the right fraction removal roller 40b attached to the right secondary gear 3b rotates clockwise. do. In addition, when the board eraser moves from left to right, the direction is reversed, but the combined gear rotates in the same order, so the left spinner removal roller 40b also rotates counterclockwise as it moves from left to right. Two left and right stripping rollers 40b rotate inward to move the strip removed from the surface of the board upwards. Therefore, regardless of the direction of moving the board eraser from left to right or from right to left, the pair of rollers always rotates counterclockwise and the right separator roller 40b rotates clockwise. It is designed to rotate inward to allow the droplet to move upwards. As shown in FIG. 3, the left outer fractional hair is joined to the roller gear 5a by the left outer fractional hair roller (9a) and the left inner fractional hair as the roller rotates inward as shown in FIG. The left inner fractional hair coupled to the roller gear 6a roller 10a rotates in a counterclockwise direction, and the central left fractional hair combined with the roller gear 8a the central left fractional hair roller 11a rotates clockwise. The surface of the left spinneret removal roller 40a rotating counterclockwise is shaken off, and the dropper is prevented from falling outward. In addition, the droplet attached to the surface of the right separating roller (40b) has the right outer part of the roller attached to the roller gear (5b) and the right outer part of the roller (9b) and the right inner part of the roller (6b) while the roller rotates inward. The right inner spinner roller 10b coupled to the roller rotates in a clockwise direction, and the central right spinner roller 11b coupled to the central right spinner roller 11b rotates in a counterclockwise direction to rotate clockwise. The drop on the surface of the right drop removal roller (40b) was shaken off and the dropped drop was not prevented from going outward. In addition, the surface of the separating hair rollers (9a, 9b, 10a, 10b, 11a, 11b) is made of a rubber material forming the helical diagonal grooves 9, so that the droplets smoothly gather toward the central inlet suction hole 26 along the grooves. It was made.

The separated droplets are sucked into the central droplet suction port 26 by the suction fan 31 attached to the shaft of the motor 30 as shown in Fig. 5, and pass through the droplet backflow prevention plate 27c and the droplet collection box 27a. It is sent to the air through the ultra-microfiber filter unit 29 is discharged to the outside and at the same time to prevent the reverse flow of the droplets, the droplets are collected in the remaining collection bin (27a).

If the collected volume exceeds a certain amount, the microfiber filter unit 29 may be opened and closed to facilitate the cleaning, or by using a separate stripping device through the sidewall 27d of the drop collection barrel, the drop may be sucked whenever necessary. You can also remove it.

Figure 4 is a detailed view showing the detailed configuration of the removal roller, the removal roller is a sponge (40-1) inside, and the surface of the irregular shape in order to smooth the removal and increase the adhesion to the surface of the blackboard The cloth 40-2 is formed, and the roller bushing 40-4 is installed on the roller shaft 40-3 to increase the bonding force with the sponge 40-1. The cloth 40-2 is attached to the inside of the sponge 40-1 and stitching, and when necessary, it is preferable to replace the roller body when necessary.

Unsigned.

Claims (3)

Friction mechanical blackboard eraser, characterized in that consisting of a roller and a stripping roller, a stripping removal roller, a drive gear, a suction cup fan, a filter, a collection barrel, the body case The method of claim 1, wherein the friction roller,
Mechanical blackboard eraser by friction method which generates driving force by friction force in close contact with the surface of blackboard and removes droplets by rotating rollers. The method of claim 1, wherein the fractional hair,
The left outer fractional hair is joined to the roller gear 5a and the left outer fractional hair is attached to the roller gear 9a and the left inner fractional hair to the roller gear 6a while the roller attached to the surface of the left fraction removing roller 40a is rotated inward. Combined left inner furrow roller 10a is rotated in a counterclockwise direction, the center left fractional fur is rotated counterclockwise by rotating the central left fractional hair roller 11a is combined with the roller gear (8a) Remove the droplet on the surface of the left separating roller (40a) so that the falling droplet does not go outward,

The droplet attached to the surface of the right stripping roller (40b) has the right outer fractional hair coupled to the roller gear (5b) and the right outer fractional hair to the roller (9b) and the right inner fractional hair to the roller gear (6b) while the roller rotates inward. Combined right inner furrow roller 10b is rotated in the clockwise direction, central right fractional fur is combined with the roller gear 8b, the central right spinner roller 11b is rotated counterclockwise to the right to rotate clockwise Remove the droplet on the surface of the roller removal roller (40b) so that the fallen droplet does not go outward,

The mechanical blackboard eraser by the friction method, characterized in that the surface of the helical shape of the slanted groove (9) is formed of a rubber material so that the droplets removed along the groove toward the central droplet inlet can be smoothly collected.

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