JPH09193598A - Whiteboard eraser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conveniently and clearly erase the writing mark on a whiteboard by immersing the wall of a liquid reservoir with liquid in the reservoir, and perforating a needle hole-like liquid discharge hole for supplying to a coater. SOLUTION: The whiteboard eraser comprises of a liquid reservoir for storing liquid K and a coater 3 for coating a white board with the liquid K. A liquid discharge hole 10 for supplying the liquid K to the coater 3 by immersing the liquid K in the reservoir is perforated at the wall of the reservoir. A liquid immersing unit 5 for immersing the liquid K from the reservoir to temporarily hold it and optimizing the liquid supply amount to the coater 3 is interposed between the reservoir and the coater 3. A needle hole-like liquid discharge hole 10 for immersing the stored liquid K to take out the liquid is perforated at the wall under a vessel 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a whiteboard eraser that erases writing traces drawn on a whiteboard with application of a liquid such as water.

[0002]

2. Description of the Related Art In recent years, in classes, meetings, meetings, briefing sessions, etc., whiteboards written with a water-based felt-tip pen have been widely used instead of so-called blackboards using chalk. This product has a non-penetrating smooth writing surface that has been subjected to enamel treatment or high-temperature baking treatment of paint on the surface of a substrate such as steel, and as a writing instrument, the powder pigment is suspended in alcohol. A felt tip pen is used. Therefore, the writing mark is only the powder pigment having no binder attached, and can be easily erased by wiping with an eraser such as a dry cloth.

[0003]

However, in such a conventional writing instrument, since the wiped pigment adheres to the eraser, frequent cleaning of the eraser is required, and sometimes the pigment scatters and stains the surroundings. To do. In addition, this ink is inferior in the effect of wicking the pigment to the pen tip due to the characteristics of the ink, so that it cannot follow fast writing, and there is a problem that uneven writing such as blurring occurs.

Therefore, the inventor of the present invention has filed Japanese Patent Application No. 5-4734.
No. 5, Japanese Patent Application No. 6-218089, and Japanese Patent Application No. 7-2
No. 20717 devised an anhydrous new ink in which a certain kind of electron-donating color-forming compound and an electron-accepting color-developing compound selected from zinc salicylate, ascorbic acid, zinc chloride, calcium chloride and the like were mixed, It has been proposed to solve the above problems by using this.

That is, the above-mentioned ink has a characteristic that it develops a color by the molecular contact between the color-forming compound and the color-developing compound, while the effect of the color-developing compound is lost due to the adhesion of water and the color returns from colorless to colorless. However, the writing trace is erased not by wiping the pigment itself, but by erasing the ink itself by a chemical reaction with water.

Therefore, in order to erase the writing marks of this ink,
It is necessary to introduce a new erasing means different from the conventional erasing tool using a dry cloth or the like.

Therefore, the invention according to claim 1 of the present invention is based on the fact that a liquid storage portion for storing a liquid such as water and an application body for applying the liquid are combined, and on the white plate using the novel ink. The purpose of the present invention is to provide a whiteboard eraser that can cleanly erase the written marks of. When erasing, since the ink itself is erased by the adhesion of water, etc., the remaining ink does not adhere to both the writing surface and the coating surface in a colored state. Both of them can be kept clean at all times, and the eraser itself does not require cleaning and is maintenance-free. In addition, since dust and the like are not generated and the conventional powder pigment is not scattered, it is possible to prevent contamination of the surroundings.

It is an object of the present invention to provide a whiteboard eraser capable of increasing the amount of liquid stored and having improved handleability for the convenience of operations such as liquid replenishment, replacement and disposal.

An object of the present invention is to provide a whiteboard eraser capable of further speeding up the drying of the writing surface after application.

[0010]

In order to achieve the above object, the invention according to claim 1 of the present invention is a liquid storage part for storing a liquid and a white plate for storing the liquid stored in the liquid storage part. And a water-containing coating body having a coating surface for coating the liquid on the wall of the liquid storage portion and supplying the liquid in the liquid storage portion to the coating body. It is characterized by having been drilled.

The invention according to claim 2 is characterized in that the liquid storage portion is formed of a container.

The invention according to claim 3 is characterized in that a coating surface is formed on the bottom surface side of the whiteboard eraser, and a wiping surface for wiping is formed on the upper surface side.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
This will be described together with the illustrated example. 1 shows a perspective view of a first embodiment of a whiteboard eraser, FIG. 2 shows a longitudinal sectional view thereof, and FIG. 3 shows an exploded perspective view thereof.

The white plate eraser 1A of the first embodiment comprises a liquid storage part 2 for storing the liquid K and an applicator 3 for applying the liquid K to the white plate, and a wall 2S of the liquid storage part 2. In addition, a liquid discharge hole 10 is formed in which the liquid K in the liquid storage section 2 is exuded and supplied to the coating body 3. In addition, in the whiteboard eraser 1A of the first embodiment, the liquid K from the liquid storage section 2 is impregnated between the liquid storage section 2 and the coating body 3 to temporarily hold the liquid K, and Liquid impregnation body 5 that optimizes the amount of liquid supplied to 3
Intervening.

The liquid reservoir 2 is, as shown in FIGS.
The container 6 is, for example, a rectangular container body 6 that stores the liquid K, and an inlet 7 for the liquid K is projected on one side surface thereof by a cap 9 so as to be hermetically sealed. Further, the wall 2S below the container 6 is provided with a needle hole-shaped liquid discharge hole 10 through which the stored liquid K is exuded and taken out. This liquid discharge hole 1
0 has a diameter of 0.5 mm or less, preferably 0.3 m
It is a small hole of m or less, and more preferably 0.1 mm or less, whereby the outflow is suppressed by the surface tension of the liquid K at all times, and the hand used when the user holds the whiteboard eraser 1A. Of the white plate eraser 1A, the pressing force when the white plate eraser 1A is pressed against the white plate, and the shaking and vibration of the white plate eraser 1A itself when the white plate is wiped out.

Further, the container body 6, the coating body 3 and the liquid impregnation body 5 which will be described later are integrally connected via a case body 8.

The case body 8 includes an upper case portion 8A for containing the liquid storage portion 2 and a lower case 8B for containing the liquid impregnated body 5. The upper case portion 8A has an insertion port 11 on the side surface through which the intake port 7 of the container body 6 is projected, and a notch 12 exposing the liquid ejection hole 10 is formed on the lower surface thereof. Further, the lower case 8B has, for example, a concave portion 13A having an opening shape matching the notch 12 and accommodating the liquid impregnated body 5 on the upper surface of the rectangular base body 13. The lower case 8B and the upper case portion 8A are integrally formed. The case body 8 is configured by being bonded to the above with an adhesive means or the like.

As described above, the liquid K in the liquid storage section 2 is
The container body 6 and the case body 8 are preferably formed of a material that is easily elastically deformed, because the container body 6 and the case body 8 are exuded by partially utilizing the pressure from the outside. In this example, the container body 6 is , A relatively soft synthetic resin material such as vinyl or polyethylene. The case body 8 is preferably made of non-water-containing foamed plastic having closed cells, such as hard foamed vinyl chloride, polyurethane foam, etc., from the viewpoint of light weight, strength, water resistance, etc., but non-foaming plastic is also required. Can be used according to

On the other hand, the liquid impregnated body 5 is formed of a water-containing material having a high water content, in other words, a high liquid absorption rate, is arranged in contact with the lower surface of the container body 6, and has the notch 12 formed therein. It is accommodated in the recess 13A of the lower case 8B. Therefore, the liquid impregnated body 5 has the liquid discharge hole 10
Even if the liquid K oozing out from the liquid has variations in the leaching amount due to temperature change, vibration, external force, etc., the liquid K is temporarily received while absorbing the variations, and the application body 3
The amount supplied to the plant is appropriate and stable.

As the water-containing material, so-called sponge rubber having open cells, animal / vegetable fibers, synthetic fibers, etc., which are laminated while being compressed, so-called felt material, thick cloth material,
Furthermore, a cellulose sponge made of a pulp material such as wood, rice husk, and flower stalk can be preferably used. In particular, a cellulose sponge in which plant fibers are entangled can absorb a liquid K such as water instantly, that is, it has absorption responsiveness. Since it is excellent and has a high water content, it can be suitably used.

The coating body 3 is disposed on the lower surface of the lower case 8B. In this example, the applicator body 3 is composed of a base portion 3A that is attached to the lower surface of the lower case 8B and a covering portion 3B that covers the base portion 3A together with the lower case 8B, and the base portion 3A has the above-mentioned absorption response. It is preferable to use the cellulose sponge which is excellent in water content and has a high water content.

Further, since the coating portion 3B forms the coating surface S1 by directly contacting the white plate, softness, fineness and abrasion resistance are more important than water content, and in this example, It is formed by a skin material such as deer skin and a sheet body made of a cloth material. The covering portion 3B extends along the lower surface of the base portion 3A and both side surfaces of the lower case 8B, and the bent portion 3B1 at the upper end thereof is sandwiched between the upper and lower cases 8A, 8B and fixed by adhesion or the like. . The covering portion 3B is the base portion 3
When A has an excessive amount of dampness, it has an effect of appropriately maintaining the dampness, such that the liquid propagates to the side surface side of the coating portion 3B and is dried from there. However, the coating portion 3B may be provided only on the lower surface of the base portion 3A, or the coating body 3 may be configured only by the base portion 3A without using the coating portion 3B, as required. At this time, the base 3A
For example, a felt cloth having excellent strength and abrasion resistance can be preferably used.

Further, the liquid impregnation body 5 and the coating body 3 are electrically connected to each other through a connecting hole 16. The connection hole 16 is a through hole having an upper end opening at the bottom surface of the recess 13A and a lower end opening at the lower surface of the lower case 8B and having a diameter larger than that of the liquid discharge hole 10. 5 and the applicator 3 are filled with the hydrous material 17 that comes into contact with each other. The connecting hole 16 preferably has a cross section with a diameter of 5 mm or more, or equivalent, and the water-containing material 17 is the liquid K.
From the viewpoint of permeability, a filament core, for example, in which long fibers are aligned in the longitudinal direction of the connecting hole 16 and bundled, can be suitably used.

In the whiteboard eraser 1A of the first embodiment, the wiping body 19 made of a water-containing material has a wiping surface S2 for wiping and drying the applied liquid K on the upper surface of the case body 8. Is attached.

FIG. 5 shows another embodiment of the notch 12. The notch 12 is, for example, a hole having a size similar to that of the connecting hole 16, and the liquid impregnated body 5 is arranged in non-contact with the container body 6. Therefore, the liquid K exuding from the liquid discharge hole 10 is impregnated in the liquid impregnation body 5 after dripping on the wall surface of the notch 12.

FIG. 6 shows a whiteboard eraser 1B of the second embodiment. In this embodiment, the liquid storage portion 2 and the liquid impregnated body 5 are arranged differently.

That is, in this example, the case body 8 is formed with a lateral hole-shaped concave portion 13A which is open at one side surface thereof, and the concave portion 13A accommodates the liquid impregnated body 5 therein.
A1 and a front portion 1 for accommodating a container body 6 forming a liquid storage portion 2
3A2. The container body 6 is provided with a liquid ejection hole 10 on the surface adjacent to the liquid impregnated body 5.
Further, the case body 8 is formed with a connection hole 16 in the inner portion 13A1 for electrically connecting the liquid impregnated body 5 and the coating body 3. Thus, in this example, since the container body 6 and the liquid impregnated body 5 are arranged side by side, the thickness of the whiteboard eraser 1B can be reduced, downsizing can be achieved, and the container body 6 can be removed. Is easy.

FIG. 7 shows a whiteboard eraser 1C of the third embodiment. In this embodiment, the container body 6 itself forming the liquid storage portion 2 constitutes the case body 8 and the liquid impregnated body 5 is eliminated. As a result, the liquid discharge hole 10 of the liquid storage section 2 is directly connected to the coating body 3 to simplify the structure of the whiteboard eraser 1C.

As shown in FIGS. 7 to 9, the container body 6 is in the form of a horizontally long rectangular block, and a stepped constricted portion 20 that extends laterally over the entire circumference is provided around the block body to form the container body 6. The container main part 6A above the constricted part 20
And a container sub-section 6B having a lower height and a small height.
In addition, in the container main portion 6A, an inlet 7 for the liquid K is formed on one side surface P1 on the longitudinal direction side by a cap 9 so as to be hermetically sealed, and on both side surfaces on the lateral direction side,
A dented grip portion 21 is recessed so as to be caught by a finger when the user grips the container body 6. Further, in the container main portion 6A, a mark line 22 is provided at a position separated from the other side surface P2 in the longitudinal direction facing the intake port 7 by a distance L1 which is, for example, ⅓ times the length L0 of the container body 6. Is provided, and is used as a guide for the filling amount when the liquid K is filled with the intake port 7 facing upward. Therefore, in this example, the maximum storage amount of the liquid K is set to 1/3 of the internal volume of the container body 6.

The liquid discharge hole 10 is formed in the wall 2S forming the bottom surface of the sub container portion 6B. The liquid discharge hole 10 has an area Y from the one side surface P1 to the mark line 22,
In this example, approximately one half of the length L0 from the one side surface P1.
The distance L2 is doubled. Therefore, when the white plate eraser 1C is stored vertically with the other side surface P2 facing downward, the liquid ejection hole 10 is located above the liquid surface, so that the liquid K from the liquid ejection hole 10 is wasted. It is possible to prevent the outflow and excessive outflow. Therefore, in the third embodiment, the outflow amount of the liquid K from the liquid ejection hole 10 is set to the first and second values.
It can be set to a larger value than in the embodiment, and in this example, in the area Y of the wall body 22, the user can increase the outflow amount,
The thin portion where the discharge hole 10 can be freely added by piercing with a needle, a pin or the like is formed so that it can be identified.

Further, in this example, the coating body 3 covers the wall body 2S and the side surface of the container sub-portion 6B, and the peripheral end portion E thereof is inside the constricted portion 20 or above the constricted portion 20. And the application body 3 has the constricted portion 2
It is detachably fixed by the band 23 wound around 0. In this example, the band 23 is a stretchable rubber band, and is used for the convenience of user's replacement of the applicator 3 and washing. A string may be used as the band 23 and the band 3 may be tied to fix the application body 3.

The coating 3 is the same as in the first embodiment.
For example, it is preferable to form the base portion 3A made of cellulose sponge and the like and the covering portion 3B made of cloth material or the like for covering the base portion 3A.

10 and 11 show a whiteboard eraser 1D according to another embodiment of the third embodiment. That is, the white plate eraser 1D is similar to the white plate eraser 1C in the liquid storage part 2
The container body 6 itself forming the case body 8 constitutes the case body 8,
By removing the liquid impregnated body 5, the liquid discharge hole 10 of the liquid storage section 2 is directly connected to the coating body 3 to simplify the structure.

As shown in FIGS. 10 and 11, the container body 6 has a horizontally long rectangular block shape, and one side surface P on the longitudinal side thereof.
1, the inlet 7 is formed by the cap 9 so that it can be sealed. Also, the wall body 2S forming the lateral side of the container body 6
The liquid discharge hole 10 is formed at a position separated from the one side surface P1 by a distance L2 that is, for example, ½ times or less of the length L0 of the container body 6, and in this example, the mark line 2 is formed.
2 is excluded. The container body 6 may have various shapes such as an ellipse and a circle in addition to the rectangular contour of the cross section.

In the present example, the applicator body 3 has a belt-shaped base portion 3A made of, for example, cellulose sponge or the like and covering each side surface of the container body 6 in the lateral direction by being wound in a tubular shape. The base 3A is fixed to the container body 6 by, for example, adhesion. Further, the applicator body 3 includes a covering portion 3B that covers the base portion 3A, and the covering portion 3B includes the cap 9
It is formed in a bag shape made of, for example, a cloth material or the like for accommodating the container body 6 while leaving the above. Further, in the opening 30 of the covering portion 3B,
A neck string 31 that narrows down the opening is provided.
Is also useful for hooking the whiteboard eraser 1D on a whiteboard for storage.

The ink to be written on the white plate is, for example, Japanese Patent Application No. 5-47345 and Japanese Patent Application No. 6-218.
The anhydrous ink proposed in No. 089 can be used,
As the liquid K for erasing the ink, water or a mixed liquid of water and a surfactant can be used. A mixed solution of water and a surfactant is preferable not only for decoloring the ink when applying this mixed solution, but also for effectively removing the decolored ink by wiping it off from the white plate. For example, the white plate is a mirror surface. When doing, the effect of removing the decolored ink is sufficiently exerted even with only water. Further, as the surfactant, sodium alkyl ether sulfate, sodium α-olefinsulfonate, fatty acid alkanolamide, alkylamine oxide, alkyl glycoside, polyoxyethylene alkyl ether, sodium alkylsulfosuccinate, polyoxyethylene alkyl allyl ether, poly One or more kinds selected from oxyethylene-polyoxypropylene copolymers can be used, and the surfactant is preferably contained in 2 to 13 parts by weight in 100 parts by weight of the mixed solution.

The white plate may be formed by using a plate body and a loop-shaped sheet body mounted to be rotatable.

[0038]

As described above, in the whiteboard eraser of the present invention, the wall of the liquid storage portion for storing a liquid such as water is provided with a liquid discharge hole for exuding the liquid and supplying the liquid to the applicator. Since it has a simple structure and can apply an appropriate amount of dampness to the application body for a long period of time, the writing marks on the white plate can be erased conveniently and cleanly, and the liquid can be prevented from dripping and after application. The white plate can be dried quickly.

[Brief description of the drawings]

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

FIG. 2 is a sectional view thereof.

FIG. 3 is an exploded perspective view thereof.

FIG. 4 is an enlarged cross-sectional view showing the vicinity of a liquid ejection hole.

FIG. 5 is a cross-sectional view showing another embodiment of the notch.

FIG. 6 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 7 is a perspective view showing a third embodiment of the present invention.

FIG. 8 is a sectional view thereof.

FIG. 9 is a side view thereof.

FIG. 10 is a cross-sectional view showing another embodiment of the third example.

FIG. 11 is an exploded perspective view thereof.

[Explanation of symbols]

 2 liquid storage part 3 coating body 6 container body 10 liquid discharge hole 16 connecting hole 17 hydrous material K liquid S1 coating surface S2 wiping surface

Claims (3)

[Claims] 1. A liquid storage section for storing a liquid, and a water-containing coating body having a coating surface for coating the white plate with the liquid stored in the storage section, and a wall body of the liquid storage section. A white plate eraser having a needle-hole-shaped liquid discharge hole for exuding the liquid in the liquid storage portion and supplying the liquid to the application body. 2. The whiteboard eraser according to claim 1, wherein the liquid storage portion is a container and the liquid discharge hole is provided in the container. 3. The whiteboard eraser has a rectangular block shape,
On the bottom surface, while forming the coating surface of the coating body,
The whiteboard eraser according to claim 1, wherein a wiping surface for wiping and drying the applied liquid is formed on the upper surface.