KR100324726B1 - Apparatus and method for automatically erasing a blackboard - Google Patents

Abstract

The present invention relates to an apparatus for erasing a blackboard and a method of cleaning and erasing the contents of chalk recorded on the surface of the blackboard using a cleaning liquid, and a mobile gas supported on the blackboard so as to run and stop in the lateral direction of the blackboard. And an erasing member mounted on the mobile gas to rotate while contacting the surface of the blackboard during the erasing operation, and a cleaning solution supply means for supplying a cleaning liquid near the contact point between the erasing member and the surface of the blackboard during the erasing operation; A cleaning liquid guide means for turning the cleaning liquid spirally around the erasing member during operation, and sliding the surface of the blackboard while being mounted on the mobile gas so as to wipe off the cleaning liquid remaining on the surface of the blackboard while following the rear of the erasing member. And a wiper member that moves.

Description

Blackboard elimination device and its method {APPARATUS AND METHOD FOR AUTOMATICALLY ERASING A BLACKBOARD}

In order to erase the writings written in chalk on the surface of the blackboard, the blackboard surface was erased using a blackboard eraser having an erased surface made of sewing (cloth).

However, when the board eraser rubbed the surface of the blackboard and erased the records on the surface of the blackboard, chalk powder scattered around. In addition, the problem of scattering of chalk powder also occurred when the blackboard eraser was removed to remove the chalk dust on the eraser surface of the blackboard eraser.

However, the surface of the blackboard is not a perfect plane but has a certain surface roughness in order to prevent the sliding of chalk. Therefore, when writing with chalk on the surface of the board, chalk powder gets stuck in the fine recesses of the surface.

For this reason, even if the blackboard surface is erased using the blackboard eraser, there is a problem that the records on the surface of the blackboard cannot be erased.

A black plate erasing apparatus for solving such a problem is disclosed in Japanese Patent Laid-Open Nos. 8-113000 and 9-193599.

In the erasing device disclosed in the above publication, a brush having an outer circumference formed by a brush, a sponge, or the like is mounted on a moving body moving in the transverse direction of the blackboard, and the shaft is mounted on the surface of the blackboard toward the longitudinal direction of the blackboard. The outer circumferential surface is designed to rotate while being in sliding contact with the surface of the blackboard. In addition, the mobile gas is equipped with a cleaning liquid supply means for supplying a cleaning liquid such as water near the contact area between the surface of the blackboard and the brush, and in a state in which the surface of the erasing member is in sliding contact with the surface of the blackboard on one side, for example, from the left and right sides. A rubber wiper member (scraper) is elongated in the longitudinal direction (up and down direction).

The mobile body is equipped with a blower for blowing warm air from the left side of the wiper member to the surface of the blackboard.

The erasing operation for erasing the recorded matter on the blackboard surface by this erasing apparatus is performed as follows.

The mobile gas is first contacted with the outer circumferential portion of the surface of the blackboard and the brush is rotated (the surface of the blackboard is rubbed by a brush), and the cleaning liquid is supplied by the cleaning liquid supply means near the contact area between the brush and the surface of the blackboard. Is moved from the left end of the blackboard to the right end with a brush or the like to peel off the recordings on the surface of the blackboard and wash them off.

In addition, the cleaning liquid remaining on the surface of the blackboard, including chalk powder or the like, is erased by the wiper member that follows the movement of the moving gas from the rear of the brush and slides on the surface of the blackboard. The cleaning liquid is dropped into a tank installed under the moving gas.

Then, the hot air is blown by a blower moving together with the moving gas at the rear side of the wiper member to dry the blackboard surface by evaporating moisture remaining on the surface of the blackboard by wiper member. In this way, the erase operation on the surface of the blackboard from the left edge to the right edge of the blackboard is erased.

After the moving gas moves to the right end of the blackboard and the erasing operation by the erasing device is completed, the moving gas returns to the original standby position of the left end of the blackboard with a brush or the like in preparation for the next erasing operation. do. In this case, Japanese Patent Laid-Open No. 9-193599 discloses a technique in which the brush is isolated from the surface of the blackboard in the return operation.

However, in any of the above publications, the wiper member is always in contact with the surface of the blackboard.

According to such an erasing apparatus, it is possible to solve the problem of scattering of chalk powder which occurs when using a blackboard eraser having the cloth erasing surface.

However, in such a conventional erasing device

(1) Since the jetted cleaning liquid is scattered around by centrifugal force generated by the rotation of the eliminating member, the elimination efficiency is inferior.

That is, most of the cleaning liquid sprayed between the blackboard and the erasing member is scattered around by the rotation of the erasing member, so that the actual amount of the cleaning liquid used for the actual erasing operation is extremely small, so that a large amount of the cleaning liquid is sprayed to increase the efficiency of the erasing operation. Needs to be.

② The working speed of the eliminating device is limited by the free fall speed of the sprayed cleaning liquid, which slows down the working speed.

That is, the cleaning liquid sprayed in front of the advancing direction of the eliminating member is free to fall due to gravity and the time to reach the bottom of the blackboard must be taken into consideration, so that the transverse speed of the eliminating member is slowed or the eliminating member and the cleaning liquid spraying nozzle are removed. Since the distance between the two and the cleaning device is sufficient to limit the moving speed during operation, there is a problem that the working speed is lowered or the size of the moving gas provided with the erasing member and the cleaning liquid injection nozzle is increased.

(3) In addition, since the wiping member has a structure in which the wiper member is always in contact with the surface of the blackboard, there are bound to be unreasonable points as follows. In other words, when the elimination device is not used for a long time, the contact between the wiper member and the surface of the blackboard is kept dry for a long time, so that the contact portion between the wiper member and the surface of the blackboard made of rubber material The surface will be crushed.

In addition, there is a disadvantage that the coating layer formed on the surface of the blackboard is peeled off by the wiper member moving together with the mobile gas, thereby damaging the blackboard.

In addition, since the wiper is in contact with the wiper when the erasing device is returned after the erasing operation is completed, there is a problem that the cleaning liquid on the wiper is removed from the wiper even after the erasing operation, so that the erasing operation is not completed.

(4) When the right direction of the blackboard is in the backward direction and the left direction is in the return direction, the erasing operation for erasing the record on the surface of the blackboard can be performed only when the mobile gas is moved in the backward direction. For this reason, in order to perform the erasing operation by this erasing apparatus, the user performs the erasing operation of the blackboard until the moving body of the erasing apparatus has completed one round trip, i.e., the moving body moves in the backward direction, and then the movement is performed. It is inconvenient to wait until the aircraft moves in the return direction and returns to its original standby position without writing on the board.

Furthermore, there is an unreasonable disadvantage that the operation life of the erasing device is long because the moving gas must be reciprocated once in the transverse direction every time the erasing operation is performed.

(5) In the above erasing apparatus, when the mobile gas returns to the original standby position after the erasing operation is completed, the wiper member slides on the dry blackboard surface, so that a friction occurs between the wiper member and the blackboard surface.

(6) The erasing apparatus performs the entire erasing operation from the left end to the right end of the blackboard surface even when a part of the blackboard surface does not contain chalk writing. Since the time required for the slide movement of the wiper member or the slide contact rotation of the elimination member is longer than necessary, there is a disadvantage in that deterioration occurs and the life of the device is shortened.

⑦ Moreover, since the erasing operation is performed over the entire surface of the blackboard surface, there is a disadvantage that it cannot be prepared in the case of trying to erase some of the chalk records on the surface of the blackboard. In this case, even if the mobile gas is moved from the standby position to the desired position to start the erasing operation, since the wiper member is in sliding contact with the surface of the blackboard, the record on the surface of the blackboard is touched and damaged by the wiper member. There is an absurdity of losing.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an erasing apparatus and an erasing method for erasing recorded items, such as letters, numbers, figures, symbols, etc., written on chalk on a blackboard surface.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows schematically the whole structure of the blackboard erasing apparatus which is 1st Embodiment of this invention.

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a cross-sectional view taken along line III-III of FIG.

Fig. 4 is a longitudinal sectional view of the apparatus essential part structure of the first embodiment as seen from the front;

5 is a front view of the main component of the apparatus of the first embodiment;

6 is an operation explanatory diagram of a folding mechanism provided in the device of the first embodiment;

7 is an operation explanatory diagram of a folding mechanism provided in the device of the first embodiment;

8 is an operation explanatory diagram of a folding mechanism provided in the apparatus of the first embodiment;

Fig. 9 is an explanatory diagram showing an operation panel and a controller for performing operation control of the apparatus of the first embodiment.

10A, 10B and 10C are explanatory diagrams of a modification of the apparatus of the first embodiment;

Fig. 11 is a longitudinal sectional view of the eraser main part of the second embodiment of the present invention as viewed from the side.

12A and 12B are explanatory views of the operation of the device essential part of the second embodiment by a cross section.

Fig. 13 is a longitudinal sectional view of the erasing device main portion of the third embodiment of the present invention as viewed from the front.

Fig. 14 is a longitudinal sectional view of the main part of the apparatus according to the third embodiment as seen from the side.

15A and 15B are explanatory views of the cross section of the main part of the apparatus of the third embodiment.

Fig. 16 is a longitudinal sectional view of the erasing device main portion of the fourth embodiment of the present invention in front view;

Fig. 17 is a longitudinal sectional view of the main part of the apparatus according to the fourth embodiment as viewed from the side.

18A and 18B are diagrams illustrating the operation of the main part of the device according to the fourth embodiment in a cross section;

19 is a perspective view showing a power transmission state in a multi-path up and down as a single motor as another embodiment of the driving guide means of the present invention;

The present invention has been made in view of the above-mentioned disadvantages, and the cleaning liquid sprayed between the erasing member and the blackboard prevents the cleaning liquid from scattering due to the centrifugal force generated by the rotation of the erasing member, and makes a spiral turning motion around the eliminating member. It is an object of the present invention to provide an erasing device and an erasing method of a blackboard that can increase the effect of the erasing operation.

In addition, an object of the present invention is to provide an eraser and an erase method of a blackboard which can improve the working speed of the eraser as a whole and make the apparatus compact by effective use of the sprayed cleaning liquid.

In addition, in the present invention, when the eraser is doubled, one of the eraser members directly contacts the blackboard to perform the erase operation through friction, and at the same time, the rotation of the eraser that is less in contact with (or does not touch) the blackboard. It is an object of the present invention to provide an erasing device and an erasing method of a chalkboard which can improve the erasing operation by pressurizing and spraying the cleaning solution on the chalkboard surface.

In addition, the present invention provides a blackboard erasing apparatus and a blackboard erasing method capable of performing an erasing operation for erasing the recorded items on the surface of the blackboard even when the movable body equipped with the erasing member or the wiper member is moved in either side of the blackboard. The purpose is to provide.

In addition, according to the present invention, the wiper makes selective contact with the blackboard so that only the wiper following the erasing member can remove the cleaning liquid according to the working direction of the erasing member so that the wiper member adheres to the surface of the blackboard or once. It is an object of the present invention to provide a device for erasing a blackboard and a method for erasing a blackboard, which can prevent wear of the wiper member or the surface of the blackboard, which may occur when the erasing member or the wiper member returns to its original position after completion of the erasing operation. It is done.

In addition, the present invention provides a blackboard erasing apparatus and a method for erasing a portion of the surface of the blackboard surface by allowing the wiper and the erasing member to be separated from the blackboard when the erasing apparatus is not moved. It aims to do it.

In order to achieve the above object, the apparatus for erasing a blackboard of the present invention includes a movable gas supported on the blackboard so as to be driven and stopped in the lateral direction of the blackboard, and mounted on the movable gas to rotate while touching the surface of the blackboard during the erasing operation. A cleaning liquid supply means for supplying a cleaning liquid near the contact portion between the member, the erasing member and the surface of the blackboard during the erasing operation, and the cleaning liquid guide means for causing the cleaning liquid to spiral around the eliminating member during the erasing operation of the erasing member; And a wiper member that slides on the surface of the board while being mounted on the moving gas so as to wipe off the cleaning solution remaining on the surface of the board while following the rear of the erasing member.

According to the apparatus of the present invention as described above, when the erasing operation is performed while moving the moving gas in the right direction, the cleaning liquid is supplied to the vicinity of the contact area between the erasing member and the chalkboard surface which rotate to slide in contact with the chalkboard surface. The supplied cleaning liquid lowers the adhesive force of the chalk powder described on the surface of the blackboard and is erased by friction generated between the eraser and the blackboard.

At this time, the spraying of the cleaning liquid may be performed by one nozzle provided on the upper portion of the blackboard, or may be performed by a porous nozzle disposed in the vertical direction of the blackboard and provided with a plurality of spraying pores. In the case of one nozzle, the device has a simple advantage, while the porous nozzle employs the cleaning liquid spraying over the entire area where the surface of the blackboard and the eliminating member are in contact with the start of the erasing operation. .

The jetted cleaning liquid is generated by centrifugal force by the rotating eliminating member and tries to be scattered to the outside. At this time, the cleaning liquid to be scattered in the cleaning liquid guide means provided around the erasing member collide with each other and then move in a direction toward the erasing member. The cleaning liquid moved to the eliminating member is scattered again by the rotational movement of the eliminating member to collide with the cleaning liquid guide means. In other words, the cleaning liquid rotates around the erasing member. However, since gravity acts on the cleaning liquid toward the bottom of the blackboard, the overall movement of the cleaning liquid moves in the downward direction of the blackboard while turning spirally around the scavenging member.

The cleaning liquid turning in a spiral shape lowers the adhesive force of chalk powder on the surface of the board and performs the erase operation together with the friction of the eraser. At this time, since the cleaning liquid around the erasing member rotates in a spiral shape, the effective cleaning liquid used for the task of lowering the adhesive force of the chalk particles is increased than the cleaning liquid guide means is not provided, thereby improving the effect of the erasing operation.

Because when the cleaning liquids to be sprayed are the same, in the absence of the cleaning liquid guide means, the cleaning liquid is mostly scattered by the rotation of the eliminating member, so that the amount of contact with the surface of the blackboard is only a part of the sprayed cleaning liquid. This is because the cleaning liquid does not scatter and moves around the scavenging member in a spiral shape.

After the erasing operation by the erasing member and the cleaning liquid is completed, the cleaning liquid remaining on the surface of the blackboard is removed by the wiper member moving while sliding the surface of the blackboard and the erasing operation is completed.

In addition, the present invention may employ a double erase member to increase the effectiveness of the erase operation.

In this case, when the erasing member is adopted as a double, any one of the erasing members may be brought into contact with the surface of the board according to the direction in which the erasing member is used, or non-contacting (non-contacting of the erasing member when the erasing member is employed as a double to perform the erasing operation. The term includes the case where the contact is relatively small, which is the same below. In this case, the non-contacting erasing member is placed in front of the advancing direction of the erasing member, and the contacting erasing member follows the non-contacting erasing member.

At this time, the erasing member that is not in contact with the blackboard (or having a small contact area) moves the cleaning liquid in a spiral shape by the cleaning liquid guiding means, thereby pressurizing and spraying the cleaning liquid on the surface of the blackboard, thereby adhering the adhesion between the chalk particles and the blackboard. Will be reduced. In other words, the non-contact erasing member mainly serves to reduce the adhesion of the chalk particles.

Of course, the cleaning liquid is not only spirally swinging around the erasing member following the non-contacting erasing member, but also the erasing operation is performed by the friction action generated between the surface of the blackboard, thereby alleviating adhesive force and contact by the non-contacting erasing member. The effect of the erase operation is excellent because the adhesive force alleviation by the erase member and the erase operation by friction are sequentially performed.

In addition, the apparatus of the present invention is disposed on the left and right sides of the wiping member, respectively, and mounted on the mobile gas, and the left and right wiper members can be selectively contacted or separated from the surface of the blackboard. In such a case, the wiper member existing on the rear side of the erasing member moving in either of the left and right wiper members with the moving gas in the left and right wiper members during the erasing operation is brought into contact with the surface of the board. In addition, the wiper member existing on the front side of the erasing member may be separated from the surface of the board (in this case, the separation means completely non-contacting, unlike the case of the erasing member). In this case, it is preferable to include an operation control means for automatically controlling the movement of the wiper according to the direction of the erase operation.

According to the apparatus of the present invention as described above, when the erasing operation is performed while moving the moving body in the right direction, the left wiper member is moved in the right direction following the rear of the eliminating member that rotates to slide against the surface of the blackboard. Scrub the cleaning solution as you slide across the surface of the board.

When the erasing operation is performed while moving the moving gas to the left side, the right wiper member which follows the rear of the erasing member and moves to the left side slides the cleaning liquid while sliding the surface on the blackboard with the cleaning liquid.

Therefore, the erasing operation can be performed even if the moving gas is moved to either side.

During the erasing operation, the wiper member is moved out of the left and right wiper members in front of the erasing member so that the wiper member is separated from the surface of the blackboard so that the wiper member slides on the dry blackboard surface. This prevents wear of the wiper member or the surface of the blackboard.

Also, since the above erasing operation can be performed even if the moving gas is moved in either of the left and right directions, it is not necessary to return the moving gas to its original position after the end of the erasing operation in preparation for the next erasing operation. Therefore, the service life of the device can be improved by minimizing the operating time of the erasing device.

When controlling the operation of the wiper member and the erasing member, it is preferable to simultaneously control the movement of the wiper member and the erasing member. That is, the contacting or detaching operation of the wiper member and the contacting or non-contacting operation of the erasing member can be controlled individually by separate driving means, but the interlocking control can make the device more compact.

In addition, the wiping device according to the present invention makes contact with one of the left and right wiper members with the blackboard surface only during the erasing operation, and the wiper member does not contact the left and right wiper members with the blackboard surface when the erasing operation is stopped. The operation of the member can also be controlled.

In this way, even if the erasing operation by the erasing device is not performed for a long time, the situation where each wiper member is pressed against the surface of the blackboard can be avoided.

In addition, the erasing apparatus of the present invention is provided with a means for preventing the wiper member and the erasing member from contacting the surface of the blackboard when moving only without performing the erasing operation, and moving the moving gas to a position indicated by the user. You may.

In this way, the erasing operation can be started from a desired position in the lateral direction of the blackboard, so that the erasing operation of the portion that does not need to be erased is avoided, and the partial erasing operation of the blackboard surface can be performed. Will be. As a result, the service life of the apparatus can be improved by limiting the operating time of the apparatus for erasing operation as necessary.

Since the erasing operation can be started from both the left and right sides, moving the mobile gas to the position at which the erasing operation starts is made in the shortest distance, so that the erasing operation can be started quickly. In addition, since the wiper members are separated from the surface of the blackboard at the time of movement of the moving gas before the erasing operation, wear of the wiper member or the surface of the blackboard can be avoided.

As described above, in the present invention in which the movable gas can be moved to a desired position, the erasing member may be moved or contacted with respect to the surface of the blackboard (non-contacting of the erasing member may include partial contact when there are two erasing members). Preferably mounted on the base, the motion control means includes means for separating the erasing member from the surface of the blackboard when the erasing operation is stopped.

In this way, when the moving gas returns to its original standby position or moves to a desired position, the wiping member and the erasing member are separated from the surface of the board, thereby preventing wear and deterioration of the erasing member.

In particular, when the moving gas is moved to a desired position, the left and right wiper members and the erasing member are separated from the chalkboard member, so that the wiper member passes through each wiper member and the erasing member during the movement of the moving gas. (B) Since it does not come into contact with the erasing member, the record written on the surface of the blackboard in this passage portion can be left intact and protected.

Therefore, the erase operation can be performed to erase only a part of the record on the surface of the blackboard.

In addition, the erasing apparatus of the present invention may be provided with forced drying means such as a blower to dry the surface of the blackboard immediately after the erasing operation. In this case, it is preferable to change the blowing direction to the left or right side of the erasing member in accordance with the advancing direction of the erasing member. This is because only one blower can be dried in accordance with the direction of the erasing operation, thereby minimizing the apparatus.

That is, in the erasing device of the present invention, a blower having a rotary fan in a casing body having a blower outlet is mounted on the mobile body by rotatably supporting the upper and lower ends of the casing body on the mobile body, and rotating the casing body. By selectively changing the direction of the blower outlet so as to be selectively blown on a blackboard surface on the left or right side of the erasing member, and the operation control means is the erasing member among the left wiper member and the right wiper member during the erasing operation. It is preferable to provide a means for causing the blower operation of the blower by rotating the casing body of the blower in a direction in which air is blown on the chalkboard surface on the rear side of the wiper member which slides on the chalkboard surface following the.

In this case, during the erasing operation, even when the moving gas is moved in either of the left and right directions, the air is blown to the surface of the blackboard wiped by the left wiper member or the right wiper member, so that even if a cleaning liquid remains on the surface of the blackboard, the evaporation immediately occurs. The board surface can be dried.

In this case, however, the air blown on the surface of the board may be a normal temperature, but if necessary, the warm air heated by a heater or the like may be blown.

In the erasing device of the present invention, as a more specific embodiment of the mechanism for contacting or non-contacting the right and left wiper members with respect to the surface of the blackboard, the upper and lower ends extend in the longitudinal direction of the blackboard from the surface side of the blackboard. The first and second eccentric shafts, which are rotatably axially supported by the moving gas and formed from an upper and lower end portions of the eccentric shaft portion, which are eccentric from the center of the rotation axis, are spaced apart in parallel in a substantially transverse direction of the first eccentric shaft and the blackboard. In addition, a second eccentric shaft, the upper and lower ends of which are axially supported by the movable body so as to be rotatable in association with the first eccentric shaft, and an eccentric shaft portion, which is eccentric from the rotation axis center, is formed between the upper and lower ends, and the first and second eccentric shafts. It is inserted into both eccentric shaft portions of the second eccentric shaft, and is rotated forward and reverse at predetermined neutral rotation positions of the first eccentric shaft and the second eccentric shaft. As a result, the left and right sides of one side and a movable member to pivot so as to be closer to the board surface,

The right wiper member is fixed to the movable member at the position of the right side of the movable member so as to contact the blackboard surface only when the right side of the movable member is swung to approach the blackboard surface,

The left wiper member is fixed to the movable member at the position of the left side of the movable member so as to contact the blackboard surface only when the left side of the movable member is swung to approach the blackboard surface,

The operation control means is configured to perform the folding operation (contacting or separating operation) of the right and left wiper members by controlling the rotation of the first and second eccentric shafts.

Thus, the mechanism for carrying out the right and left wiper member folding operation is comprised using the said 1st and eccentric shaft, and the movable member which is externally inserted in these both shafts, and fluctuates according to rotation of both shafts, The mechanism Can be configured compactly.

In addition, the operation of folding the right and left wiper members is performed by the rotation of the first and second eccentric shafts, and the drive system of the folding operation can be easily configured using an electric motor or the like.

However, when the first and second eccentric shafts are rotated to the neutral rotational position and the movable member is in an unstable state, it is also possible to isolate both the right and left wiper members from the surface of the board.

In this case, however, with respect to the assembling structure of the erasing member, a pair of movable members are integrally swingable at the upper and lower positions of the eccentric shaft portions of both shafts of the first and second eccentric shafts, and the erasing member Is separated from the blackboard surface in the non-swing state of the movable member at the neutral rotational position of the first and second eccentric shafts, and the left and right sides of both movable members are oscillated to approach the blackboard surface. In this case, it is preferable that the upper and lower ends of the eliminating member are rotatably supported on both movable members at intermediate positions between the left and right sides of both movable members so as to contact the surface of the board.

Alternatively, a pair of the erasing member between the left wiper member and the right wiper member is provided in parallel to the left and right, and the pair of the movable members at positions of the upper and lower portions of the biaxial eccentric shaft portions of the first and second eccentric shafts. Is integrally swingable,

The both eliminating members are separated from the blackboard surface in the non-sway state of the movable members at the neutral rotational positions of the first and second eccentric shafts, and are swinged so that the left side portions of the both movable members are close to the blackboard surface. When the left side eraser is in contact with the surface of the blackboard and the right side is removed from the surface of the blackboard, and the right side of the movable member is rocked so as to be close to the surface of the blackboard. Preferably, the upper and lower ends of each erasing member are axially rotatably supported on both movable members so as to be separated from the left and right sides of both movable members so that the left eliminating member is separated from the surface of the blackboard.

In this way, the erasing member is axially supported on the movable member, and in the erasing operation, the erasing member can be brought into contact with the surface of the blackboard by interlocking with the contact operation of the one of the right and left wiper members. .

When the first and second eccentric shafts are rotated to their neutral rotation positions, both the right and left wiper members can be separated, and the erase member can be separated from the surface of the board.

The folding operation of the right and left wiper members and the erasing member is performed by the rotation driving of the first or second eccentric shaft, and the device configuration can be made compact by sharing a drive system for performing this folding operation.

In addition, as another specific embodiment as a mechanism for folding the right and left wiper members with respect to the surface of the blackboard,

It is axially supported by the moving body rotatably around the longitudinal axis center of the blackboard on the surface side of the blackboard, and the left and right sides move forward and backward toward the surface of the blackboard according to the forward and reverse rotation at a predetermined neutral rotation position. Having a movable member for moving,

The right wiper member is fixed to the movable member at the position of the right side of the movable member such that the movable member is in contact with the surface of the blackboard only when the movable member is rotated at its neutral rotational position such that the right side of the movable member is advanced toward the blackboard surface. Become,

The left wiper member is fixedly mounted to the movable member at the position of the left side of the movable member such that the left side of the movable member contacts the blackboard surface only when the movable member is rotated at its neutral rotational position such that the left side of the movable member is advanced toward the blackboard surface. Being

The driving control means performs the folding operation of the right and left wiper members by controlling the rotation of the movable member.

In this way, a mechanism for causing the right and left wiper members to be folded can be configured using a movable member made of a rotating material.

The operation of folding the right and left wiper members can be performed by rotational driving of the movable member, and the drive system of the folding operation can be simply configured using an electric motor or the like.

Moreover, by rotating the movable member to its neutral rotational position, both the right and left wiper members can be separated from the surface of the blackboard.

In this case, as for the assembly structure of the erasing member,

A pair of said erasing member is provided in parallel between left and right wiper members and a right wiper member, and a pair of said movable members are rotatably installed by spaced up and down in the longitudinal direction of the board | substrate. Become,

The both eliminating members are separated from the blackboard surface at the neutral rotational position of the both movable members, and when the movable member is rotated such that the left side of the both movable members is advanced toward the blackboard surface, the left eliminating member is the blackboard surface. When the movable member is rotated such that the right side eliminating member is separated from the surface of the blackboard while the right side of the movable member is advanced toward the surface of the blackboard, the right side eliminating member contacts the surface of the blackboard and the left side eliminating member It is preferable that the upper and lower ends of the respective erasing members are rotatably supported on both movable members so as to be separated from the surface of the blackboard so that the upper and lower ends of the respective erasing members are rotatably supported.

In the erasing operation in which the erasing member is axially supported on the movable member, the erasing member can be brought into contact with the surface of the blackboard by interlocking with a contact operation of one of the right and left wiper members.

When the movable member is rotated to its neutral rotational position, both the right and left wiper members can be separated and at the same time the erase member can be separated from the surface of the board.

The folding operation of the right and left wiper members and the erasing member can be performed by rotational driving of the movable member, and the device configuration can be made compact by sharing the driving system for the folding operation.

However, in the case where a pair of erasing members are provided between the left wiper member and the right wiper member as described above, the erasing members may be interlocked with each other, but may be rotated independently.

The right and left wiper members are each formed of a rubber material formed of a synthetic resin polymer on the outer surface of the blackboard surface in contact with the surface of the blackboard, so as to secure durability, cleaning liquid removal performance, and the like.

Next, the erasing method of the blackboard according to the present invention comprises the steps of supplying a cleaning liquid in the vicinity of the contact point between the erasing member and the surface of the blackboard to achieve the above object;

Rotating the erasing member, the outer peripheral portion of which is in sliding contact with the surface of the blackboard, around the longitudinal axial center of the chalkboard; and guiding the flow of the cleaning liquid supplied to the erasing member, while the cleaning liquid pivots around the erasing member in a spiral manner. A process of relieving the adhesive force of the particles, a process of peeling the chalk particles by friction between the rotating eliminating member and the surface of the blackboard, and a transfer for moving the rotating gas provided with the rotating eliminating member and the cleaning liquid supply in the transverse direction of the blackboard. And removing the cleaning liquid attached to the surface of the blackboard by sliding the wiping member disposed on the left and right sides of the erasing member while following the erasing member. It is.

According to the erasing method of the present invention, since the cleaning liquid pivots around the erasing member in a spiral shape, the effective cleaning liquid during the erasing operation can be increased, so that the effective erasing operation can be performed, and the lateral speed of the erasing member can be increased. The work speed can be improved.

In the erasing method of the present invention, the wiper members are disposed on the left and right sides of the erasing member so as to be in contact with or detachable from the surface of the board, and the erasing operation is performed by moving the erasing member to the right. When the wiper member on the left side of the erasing member is brought into contact with the surface of the blackboard and the wiper member on the right side is removed from the surface of the blackboard, and the erasing operation is performed by moving the erasing member to the left side, the right wiper member of the erasing member is moved to the surface of the blackboard. It is desirable to add a step of contacting the wiper and separating the left wiper member from the surface of the board.

According to the erasing method of the present invention, even if the erasing member is moved in either of the right and left directions, the wiper member following the wiping member can be moved on the surface of the blackboard to remove the cleaning liquid. Also in the case of moving in the direction, an erasing operation for erasing the recorded items on the surface of the blackboard can be performed.

In this erasing operation, since the wiper member in front of the advancing direction of the erasing member is separated from the blackboard surface, the wiper member does not slide the dry blackboard surface, thereby preventing wear of the wiper member or the blackboard surface.

In the present invention, even if the erasing operation is not performed for a long time by adding a step of keeping the left and right watchper members separated from the surface of the blackboard until the erasing operation is resumed. It is possible to avoid the wiper member sticking to the surface of the blackboard.

And the step of resuming the erase operation from the desired position in the transverse direction of the blackboard to move the left and right wiper members and the erasing member in the transverse direction of the blackboard, thereby eliminating the need to erase the surface of the blackboard. It is possible to avoid the erase operation on the portion and to perform the partial erase operation on the surface of the blackboard.

When the left and right wiper members and the erasing member are moved to the desired positions, the left and right wiper members are separated from the surface of the blackboard, so that wear of the wiper member or the surface of the blackboard can be avoided.

In this case, in particular, when the left and right wiper members and the erasing member are moved to the desired position, the left and right wiper members are separated from the surface of the blackboard together with the left and right wiper members. Since the eraser is not in contact with the surface of the blackboard when the eraser moves to a desired position, an operation of erasing only a portion that will not be left when leaving some records on the surface of the blackboard can also be performed.

When the erasing operation is performed while the erasing member is moved in the right direction, it is blown to the surface of the blackboard on the left side of the left wiper member, and when the erasing operation is performed while the erasing member is moved in the left direction, the right wiper member is removed. By providing a step of blowing on the surface of the blackboard on the right side, when the cleaning member is left on the surface of the blackboard even when the erasing member is moved in either side in the erase operation, it is evaporated. The board surface can be dried.

A first embodiment of the present invention will be described with reference to FIGS. 1 to 9.

1 is a front view schematically showing the overall configuration of a board erasing apparatus according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. 4 is a longitudinal sectional view seen from the front of the main structure of the present embodiment, FIG. 5 is a front view of the main structure of the present embodiment, and FIGS. 6 to 8 are operational explanatory diagrams of the folding mechanism provided in the erasing device of the present embodiment; Fig. 9 is an explanatory diagram showing an operation panel and a controller for performing operation control of the erasing apparatus of this embodiment. 2 and 3 omit some components for convenience of explanation.

1 and 2, 100 denotes a blackboard and 200 denotes an eraser of the blackboard.

The board | substrate 100 is comprised by the rectangular board-type body 110 which comprises the main body, and the board | substrate frame body 120 which supports the board-type body 110. As shown in FIG.

The writing body 110 is formed of steel or synthetic resin, and is capable of writing letters, figures, etc. on the surface 111 (hereinafter referred to as blackboard surface 111) by chalk (choke).

In addition, the blackboard frame body 120 is mounted on the plate writing body 110 to surround the outer periphery of the writing body 110, and supports the writing body 110 in a vertical posture.

The erasing device 200 includes a moving gas 201 supported by the chalkboard 100 so as to be movable in the lateral direction (left and right directions) of the chalkboard 100 via the travel guide means 130 shown in FIG. 2. have.

The mobile body 201 has a substantially rectangular parallelepiped outer casing 210 whose main portion extends longitudinally from the side of the surface of the blackboard surface 111 toward the surface of the blackboard 111, and the outer casing thereof. It consists of an approximately plate-shaped upper support frame 211a and a lower support frame 211b formed integrally by being spaced up and down on the inner surface portion of 210, and the blackboard of each support frame 211a and 211b. The distal end portion of the vicinity of (100) is disposed on the blackboard surface 111 side so as to exist on the upper side and the lower side of the blackboard 100, respectively.

At the distal end of the support frame 211a, a slide 212 having a bearing 132b to be described later extends to the rear side of the blackboard 100 and is integrally installed with the support frame 211a.

The travel guide means 130 for supporting the movable body 201 on the blackboard 100 so as to be movable is a rack 131a which extends over the entire length of the left and right directions on the back side of the upper frame of the blackboard frame body 120. And a pinion (131b) rotatably supported on the upper support frame (211a) by gear coupling to the guide rod (132a) and the rack (131a), and the guide rod (131a) and the upper support frame (211a). Slide 212 is mounted on the bearing 132b so as to slide.

By this structure, the movable body 201 is movable to the board | substrate 100 in the lateral direction through the bearing 132b of the slide part 212 of the upper support frame 211a, and the guide rod 132a. The driving and stopping of the pinion 131b, which is supported and geared to the rack 131a, is carried out via a driving mechanism described later.

Even more preferably, as shown in FIG. 19, the rack 131a and the guide rod 132a are respectively installed above and below the blackboard frame body 120, and the pinion 131b is mounted above and below the mobile body, respectively. Thus, the power of the driving source is divided into two paths, and is transmitted, so that the pair of pinions 131b rotate at the same speed. The drive means of the erasing member may be used for the power transmission mechanism. With this configuration, the moving gas is transferred by the same force in the upper and lower sides, and in particular, the braking force acts on the upper and lower sides of the moving gas at the time of stopping, thereby reducing the excessive force exhibited by the inertial force of the moving gas.

In the present embodiment, since the traveling / stopping operation of the mobile body 201 is controlled by the controller 270 described later, the mobile body 201 is positioned at the right end of the blackboard 100 as shown in FIG. And position detecting means 140 for detecting the state moved to the left side and the state moved to the left end.

The position detecting means 140 is provided on both sides of the contact members 141a respectively provided on the left and right ends of the upper frame body of the blackboard frame body 120 and the upper side of the outer casing 210 of the mobile body 201. And a limit switch 141b for outputting an electrical signal when contacting the contact member 141a.

However, the detection signal output from the limit switch 141b is sent to the controller 270 which will be described later in order to control the traveling / stopping operation of the mobile body 201 as described later.

As the position detecting means 140, an optical sensor, a micro switch, a contact sensor, or the like may be used in addition to the limit switch 141b.

A stopper may be installed as a safety device for mechanically restricting the movement of the moving gas at the left and right ends of the blackboard in case of a failure of the position detecting means 140.

As described above, the erasing device 200 including the moving gas 201 includes the erasing member 230, the wiper member 240, the folding mechanism 220, the cleaning liquid supply means 250, and the blower 260 which will be described below. And a controller 270 mounted on the mobile gas 201.

In addition, with respect to the said erasing member 230 and the wiper member 240, in this embodiment, as shown in FIG. 3, a pair of parallel pairs provided to the left and right (lateral direction of a blackboard) so as to contact the blackboard surface 111 is shown. The roll-shaped eliminating members 230L and 230R, and two wiper members 230L and 230R, which are respectively provided on the left and right sides of the both eliminating members 203L and 230R, are mounted on the mobile gas 201. have.

The folding mechanism 220 mounts the erasing members 230L and 230R and the wiper members 240L and 240R on the moving body 201 so as to be in contact with and detachable from the blackboard surface 111. In order to erase the recorded matters (characters, figures, etc.) written by chalk (choke) or the like on the surface of the blackboard 111, the left wiping member 230L and the left wiper member 240L are used. It is a mechanism for selectively contacting the blackboard surface 111 with one of the left folding member group L and the right folding member group R formed of the right erasing member 230R and the right wiper member 240R. .

With reference to FIGS. 2-5, the folding mechanism 220 is a right side which axially rotatably supported the upper and lower end parts in the vicinity of the right side of the upper and lower support frames 211a and 211b of the moving body 201, respectively. Between the eccentric shaft 221R, the left eccentric shaft 221L rotatably supporting the upper and lower ends at positions near the left of the support frames 211a and 211b, and both the support frames 221a and 221b, respectively. In parallel to the left and right.

The portion between each of the support frames 211a and 211b of each of the eccentric shafts 221R and 221L is an eccentric shaft portion whose axial center (center shaft) is eccentric from the rotation axis center.

The folding mechanism 220 is provided with the substantially rectangular upper movable member 222a and the lower movable member 222b which were externally inserted in the upper part and the lower part of the eccentric shaft part of both axes of the eccentric shafts 221R and 221L, respectively.

Each movable member 222a, 222b penetrates the eccentric shaft part of the said right eccentric shaft 221R in the vicinity of its rear part as shown to FIG. 3 and FIG. 4, and has circular through-hole 223R (its diameter) Is substantially the same as the eccentric shaft portion of the right eccentric shaft 221R), and the eccentric shaft portion of the left eccentric shaft 221L is penetrated and formed so that a through-hole 223L having a rectangular shape is formed. It is externally inserted in the eccentric shaft part of both axes of the eccentric shaft 221R (221L) via 223R (223L).

Moreover, each movable member 222a, 222b is latched so that a movement is impossible in the axial direction of eccentric shaft 221R, 221L.

The reason why the through hole 223L is formed in the shape of an ellipse through the eccentric shaft portion of the left eccentric shaft 221L is that the movable members 222a and 222b are rotated by the rotation of the eccentric shafts 221R and 221L. It is to enable the swing as described later.

2, 3, and 6, the folding mechanism 220 is disposed between the two movable members 222a and 222b around the two eccentric shafts 221R and 221L at the position of the rear edge thereof. The eccentric shaft cover 225 of the plate-shaped erected in the vertical direction and the outer peripheral portion of the rear side of the left and right erasing members 230L and 230R are vertically covered to the front side near the blackboard surface 111. It is provided with the thin plate-shaped washing | cleaning liquid guide member 226 standing up in the direction. The upper and lower ends of the carver 225 and the cleaning liquid guide member 226 are fixed to both movable members 222a and 222b, and are integrally provided with both movable members 222a and 222b.

In this case, the cleaning liquid guide member 226 is disposed at approximately the center in the left and right directions at the front of the edge of the blackboard surface 111 of both movable members 222a and 222b as shown in FIGS. 3 and 6. In addition, the cross section is formed in substantially ω-shape, and the erasing members 230L and 230R can be provided in parallel with the two recesses 226b.

Of course, the shape of the cleaning liquid guide member 226 may be appropriately shaped to prevent the cleaning liquid from scattering and to allow the cleaning liquid to perform a spiral rotational motion. It is preferable to set it as.

In the case where the scavenging member is employed in double, the ω-shaped central portion of the cleaning liquid guide member 226 may be attached to a porous nozzle extending near the surface of the blackboard to spray the cleaning liquid over the entire surface of the blackboard, or the cleaning liquid guide member 226. It is also preferable to provide a space for the cleaning liquid supply passage in the inside) and to install a plurality of micropores along the vertical direction of the blackboard so that the cleaning liquid guide member 226 may serve as a nozzle for spraying the cleaning liquid.

On the left and right front end portions 226a of the cleaning liquid guide member 226, projections 227 protruding to the left and right sides of the cleaning liquid guide member 226 from the front end portions 226a are formed.

A plurality (two in the present embodiment) for inserting and mounting each wiper member 240L and 240R on the front surface 227a facing the blackboard surface 111 of the protrusions 227 on the left and right sides thereof. The insertion groove 227b is formed over the entire length of the cleaning liquid guide member 226 in the vertical direction.

In addition, the space between the rear surface 226c of the cleaning liquid guide member 226 and the front surface 225a of the eccentric shaft cover 225 allows air from the blower 260 to be described later to the right side of the wiper member 240R. It is used as the ventilation passage 228 for guiding the blackboard surface 111 on the right side.

For this blowing guide, a directing portion 225b extending from the right end of the eccentric shaft cover 225 toward the blackboard surface 111 on the right side of the right wiper member 240R is extended. have.

The erasing members 230L and 230R are rotated while the outer circumferential portion thereof slides in contact with the blackboard surface 111 to peel off the recorded matters of the blackboard surface 111 by friction with the blackboard surface 111.

As shown in Figs. 3 and 5, the erasing members 230L and 230R are rolls formed by winding a brush 232 made of a synthetic resin or the like on a rod-shaped support shaft 231, respectively, to the outside. As shown in Fig. 3, the cross section is arranged so as to face the center of the shaft in the vertical direction at the location of the concave portion 226b of the cleaning liquid guide member 226 having a substantially? -Shaped shape.

The upper and lower ends of the support shafts 231 are rotatably provided between the movable members 222a and 222b, respectively.

A drive mechanism for rotating the erase members 230L and 230R is assembled to the upper movable member 222a.

As shown in FIG. 5, the driving mechanism includes a motor M1 fixedly mounted to the upper movable member 222a, and an upper movable member so as to transmit the driving force of the driving motor M1 to both the erasing members 230L and 230R. It is comprised by the gear group G1 arrange | positioned at the upper side of 222a. In this case, the gear group G1 is a gear 230b mounted on the drive shaft of the drive motor M1, the gear 230b being axially supported by the upper movable member 222a, and the left erasing member 230L. The gear 230c and the gear 230c mounted on the support shaft 231 are sequentially arranged to transmit the driving force of the driving motor M1 to the left elimination member 230L.

On the other hand, the gear 230c geared to the gear 230c and axially supported by the upper movable member 222a and the gear 230e mounted to the support shaft 231 of the right erasing member 230R by gear-coupling thereto are in turn. Arranged as described above, the driving force of the driving motor M1 is transmitted to the right erasing member 230R.

In this configuration, when the driving motor M1 is rotated in both the forward and reverse directions, the left and right erasing members 230L and 230R are driven in the same direction in cooperation with each other.

In the present embodiment, the drive motor M1 is for driving both erase members 230L and 230R and at the same time for moving the moving gas 201 in the lateral direction of the blackboard 100.

As shown in FIG. 5, the gear 230f is a gear for transmitting the driving force of the driving motor M1 to the pinion 131b of the travel guide means 130. The gear 230f is rotatably installed integrally with the gear 230d and, as shown in FIG. 2, the gear 230g is axially supported at the lower side of the upper support frame 211a. Are combined.

On the upper side of the upper support frame 211a, a gear 230h is provided which is rotatably integrated with the gear 230g, and the gear 230h is the pinion 131b of the travel guide means 130. Gear is coupled to a gear (230i) mounted on a rotating shaft.

By this configuration, the driving force of the driving motor M1 is transmitted to the erasing members 230L and 230R, and the pinion 131b is disposed through the gears 230a to 230d and 230f to 230i in this order. It is transmitted, and the mobile gas 201 is made to travel.

Each of the wiper members 240L and 240R is for sliding down the cleaning liquid attached to the surface of the blackboard while slidingly moving on the surface of the blackboard 111 during the erasing operation described later.

Each of the wiper members 240L and 240R is made of a wedge-shaped rubber material and is inserted into each of the insertion grooves 227b formed in the protrusion 227 of the cleaning liquid guide member 226. It is assembled to the upper and lower movable members 222a and 222b via the guide member 226.

Since each wiper member 240L and 240R not only gets wet with the cleaning liquid (water) during the erasing operation but also slides the blackboard surface 111 in a state of being in close contact with the blackboard surface 111, water resistance and wear resistance are required. .

For this reason, in this embodiment, a halogenated element is introduced and halogenated on the surface of each of the wiper members 240L and 240R made of a rubber material, especially the surface directly in contact with the blackboard surface 111, and then polychlorinated. A film layer is formed from synthetic resin polymers, such as vinyl and polyurethane.

In the folding mechanism 220 in which the erasing members 230L and 230R and the wiper members 240L and 240R are assembled as described above, the eccentric shafts 221L and 221R are moved at a predetermined neutral rotational position. The two movable members 222a and 222b swing by interlocking with each other in forward or reverse rotation (detailed description will be described later), and according to the swinging operation, the erasing members 230L and 230R and the wiper member 240L ( The contact or separation operation is performed on the blackboard surface 111 of 240R.

A drive mechanism for rotating the eccentric shafts 221L and 221R is provided on the upper support frame 211a of the mobile body 210 to perform this folding operation.

As shown in Fig. 4, the drive mechanism includes a drive motor M2 fixedly mounted on the upper support frame 211a, and a gear group for transmitting the driving force of the drive motor M2 to both eccentric shafts 221L and 221R. It consists of (G2). In this case, the gear group G2 is gear-coupled with the gear 221a which attached the drive force of the drive motor M2 to the drive shaft of the drive motor M2, and is attached to the shaft support part of the right eccentric shaft 221R. The gear 221b is transmitted to the post shaft 221R in order. On the other hand, the gear 221c gear-coupled to the gear 221b and rotatably supported by the upper support frame 211a and the gear 221d gear-coupled thereto and mounted on the shaft support of the left eccentric shaft 221L. The driving force of the driving motor (M2) is transmitted to the left eccentric shaft (221L) through the order. With such a configuration, when the driving motor M2 is operated in either the forward or the reverse direction, both of the eccentric shafts 22LL and 221R are driven to rotate in the same direction in cooperation with each other.

As described above, the operation of the folding mechanism 220 by rotating the eccentric shafts 221L and 221R will be described with reference to FIGS. 6 to 8.

6 to 8, LO denotes a rotation axis center point of the left eccentric shaft 221L, and LA denotes a rotation reference point set on the outer circumferential surface of the left eccentric shaft 221L to indicate the rotational position of the left eccentric shaft 221L. Is the rotation axis center point of the right eccentric shaft 221R, and RA is the rotation reference point set on the outer circumferential surface of the right eccentric shaft 221R to indicate the rotation position of the right eccentric shaft 221R.

X is a horizontal horizontal line parallel to the surface of the blackboard 111 through the rotation axis center points L0 (RO) of both eccentric shafts 221L and 221R, and LY is through the rotation axis center point LO of the left eccentric shaft 221L. The front and rear horizontal line and RY, which are directly perpendicular to the left and right horizontal line X, are the horizontal lines which are directly and horizontally perpendicular to the left and right horizontal line X through the rotation axis center point RO of the post core axis 221R.

FIG. 6 shows a neutral state (movable members 222a and 222b separated from the blackboard surface 111 both of the erasing members 230L and 230R and the wiper members 240L and 240R with respect to the blackboard surface 111). Non-swing status).

In this neutral state, as shown in FIG. 6, the rotation reference point LA of the left eccentric shaft 221L rotates by an angle θ (about 16 degrees in this embodiment) in the clockwise direction with respect to the horizontal and horizontal lines LY. At one position, the rotation reference point RA of the right eccentric shaft 221R is at a position where only the angle θ (about 16 degrees in this embodiment) is rotated counterclockwise with respect to the front and rear horizontal line RY. In this embodiment, the rotation positions of such eccentric shafts 221L and 221R are neutral rotation positions.

In this neutral state, the outer circumferential portions of the erasing members 230L and 230R are separated from the blackboard surface 111 by a predetermined distance Lt and Rt (Lt = Rt), and the respective wiper members 240L and 240R are disposed. Also, it is separated from the blackboard surface 111 by a predetermined interval LT and RT (LT = RT). In this case, in this embodiment, the relationship between the said interval LT, RT, Lt, and Rt is set so that "LT = 2 * Lt, RT = 2 * Rt".

FIG. 7 shows the operation state of the folding mechanism 220, that is, the blackboard surface 111, in the erasing operation for erasing the recorded matter of the blackboard surface 111 while driving the mobile body 201 in the right direction. The left contact member group L made of the left erasing member 230L and the left wiper member 240L is shown in contact with each other.

In the neutral state of FIG. 6, when the driving motor M2 is rotated forward, the right eccentric shaft 221R is driven to rotate clockwise through the gears 221a and 221b shown in FIG. 4. . At the same time, the left eccentric shaft 221L is rotated in the clockwise direction via the gears 221c and 221d.

In the forward rotational driving of the drive motor M2, the rotation reference points LA RA of the respective eccentric shafts 221L and 221R are respectively moved from the position shown in FIG. 6 to the position shown in FIG. When both eccentric shafts 221L and 221R are rotated in a clockwise direction by a predetermined angle (about 90 degrees in this embodiment), the movable members 222a and 222b have a left side closer to the blackboard surface 111. It swings from the neutral state (non- rocking state) of FIG.

At this time, the left folding member group L is generally advanced toward the blackboard surface 111 by the eccentric distance Ldmax of the left eccentric shaft 221L shown in FIG. In this case, since the relationship between the eccentric distance Ldmax and the intervals LT and Lt (see Fig. 6) is set to achieve "2 Lt <Ldmax" or "LT <Ldmax", The whole comes into contact with the blackboard surface 111.

In order to avoid excessive contact pressure of the blackboard surface 111 of the left contact member group L, it is desirable to set the eccentric distance Ldmax or the intervals LT and Lt so that a relationship of "Ldmax <3 · Lt" is established. desirable.

At this time, the right fold member R is generally moved toward the blackboard surface 111 by the eccentric distance Rdmin (<Ldmax) of the right eccentric shaft 221R shown in FIG. 7. The relationship between the intervals RT and Rt (see Fig. 6) is set so that "Rdmin <Rt <RT".

For this reason, the group of the right corner members R is kept in a state separated from the blackboard surface 111 without contacting the blackboard surface 111. However, when the eliminating member is adopted in double, the non-contact state during the erasing operation means that the peeling work of the chalk particles due to the friction is mainly the gluing force reduction work that rotates in a spiral shape instead of the main state, so that the contact state is rather not completely separated. It may be.

If the relationship between the eccentric distance Rdmin and the interval Rt is, for example, "Rdmin = Rt",

It is also possible to contact the erasing member 230R with the blackboard surface 111 without contacting the wiper member 240R of the right folding portion worrys R with the blackboard surface 111. However, in the present embodiment, the left folding member group ( When L) contacts the blackboard surface 111 as mentioned above, the right side member group R does not contact the blackboard surface 111. As shown in FIG.

The same applies to the case of contacting the blackboard surface 111 of the right group of folding members R described below, and the left member group L is not in contact with the surface of the blackboard 111 at this time. Also in this case, the wiper member means complete separation, but the elimination member may have some contact.

Fig. 8 shows the operating state of the folding mechanism 200, i.e., the blackboard surface 111, in the erasing operation for erasing the recorded matter on the blackboard surface 111 by traveling the mobile body 201 to the left. The operation state in which only the right side folding member group R consisting of the right erasing member 230R and the right wiper member 240R is in contact with each other is displayed.

In the above neutral state, when the driving motor M2 is driven in reverse rotation, the right eccentric shaft 221R is rotated in the counterclockwise direction via the gears 221a and 221b shown in FIG. At the same time, the left eccentric shaft 221L is rotated counterclockwise via the gears 221c and 221d.

By the reverse rotational driving of the drive motor M2, the rotation reference point RA LA of each of the eccentric shafts 221R and 221L moves from the position shown in FIG. 6 to the position shown in FIG. 8, respectively. When the eccentric shafts 221R and 221L are rotated counterclockwise by a predetermined angle (about 90 degrees in this embodiment), the movable members 222a and 222b are positioned so that their right sides are close to the blackboard surface 111. It swings from the neutral state (non-swing state) of 6.

At this time, the right folding member group R is generally advanced toward the blackboard surface 111 by the eccentric distance Rdamx of the left eccentric shaft 221L shown in FIG. 8. In this case, since the relationship between the eccentric distance Rdmax and the intervals RT and Rt (see Fig. 6) is set to be "2.Rt <Rdmax" or "RT <Rdmax", the right side folding member R The whole is in contact with the surface of the blackboard (111).

In order to avoid excessive contact pressure of the right surface member group R against the blackboard surface 111, the eccentric distance Rdmax or the interval Rt (RT) is set such that a relationship consisting of "Rdmax <3 Rt" is established. It is desirable to set.

In this case, the left folding member group L is generally advanced toward the blackboard surface 111 by the eccentric distance Ldmin (<Rdmax) of the left eccentric shaft 221L shown in FIG. 8, and the eccentric distance Ldmin and The relationship between the intervals LT and Lt (see Fig. 6) is set such that "Ldmin <Lt <LT".

For this reason, the left folding member group L is kept in contact with the surface of the blackboard 111 and is separated from the surface of the blackboard 111. (If the erasing member is doubled and the erase operation is performed, the separation is performed. The concept includes some contact as described above.)

By the operation of the folding mechanism 220 described above, any one of the left folding member group L and the right folding member group R can be selectively brought into contact with the blackboard surface 111.

Moreover, in this embodiment, in order to control the operation | movement of the said folding mechanism 220 by the controller 270 mentioned later, as shown in FIG. 3 and FIG. 4, the operating state of the folding mechanism 220 is

Whether the left and right folding member groups L and R are separated from the blackboard surface 111, or is the left folding member group L only in contact with the blackboard surface 111? Three proximity sensors 221f for detecting whether only R) is in contact with the surface of the blackboard 111 are fixedly installed on the upper support frame 211a of the mobile body 201, each proximity sensor. 221f corresponds to each of the above three types of operating states, and in this corresponding operating state, it is integrated with this on the gear 221b attached to the shaft supporting portion of the right eccentric shaft 221R. It is arrange | positioned around the gear 221b so as to oppose the movable body 221e rotatably fixedly installed. When each of the proximity sensors 221f and the moving body 221e meets (or faces each other), a detection signal informing the operation state of the folding mechanism 220 is output to the controller 270.

The cleaning liquid supplying means 250 shown in FIG. 1 erases the cleaning liquid which washes off the recorded matter peeled off the blackboard surface 111 by the erasing members 230R and 230L during the erasing operation described later. 230L) and the blackboard surface 111 to supply near the contact point. Of course, the cleaning liquid not only serves to wash away the items to be peeled off, but also lowers the adhesive force of the chalk particles attached to the surface of the blackboard, thereby serving to facilitate the peeling operation.

As shown in FIG. 1, the cleaning liquid supplying means 250 guides the cleaning liquid pump 251 and the cleaning liquid sucked by the cleaning liquid pump 251 above the scavenging members 230R and 230L. Collecting and storing the water supply pipe 252 for spraying through the nozzle (not shown) to the vicinity of the contact surface of the erasing member 230R and 230L to the blackboard surface 111 and the cleaning liquid falling from the blackboard surface 111 after spraying. The storage tank 253 is provided.

Here, the nozzle may be a single nozzle installed on the upper portion of the blackboard, it may be disposed in the longitudinal direction of the blackboard may be used for the porous nozzle so that the spraying can be made simultaneously to the entire area in contact with the eraser and the surface of the blackboard. The porous nozzle may be installed in the cleaning liquid guide member as mentioned above, or it may be possible to provide a flow path inside the cleaning liquid guide member and install a plurality of micropores so that the cleaning liquid guide member may serve as the porous nozzle. Do.

In this case, the storage tank 253 is freely attached to the lower side of the lower support frame 211b of the mobile gas 201, and the cleaning liquid pump 251 is attached to the storage tank 253. In addition, a filter 254 is installed freely inside the storage tank 253 to filter the washing liquid falling off from the blackboard surface 111. The washing liquid pump 251 is provided with the filtered washing liquid. To the water supply pipe 252.

The blower 260 shown in FIG. 3 and FIG. 4 evaporates the cleaning liquid remaining on the blackboard surface 111 immediately after erasing by the wiper members 240L and 240R during the erasing operation described later. In order to dry the surface 111 sufficiently, the surface of the blackboard 111 is blown.

The blower 260 supports the support shaft 261 at the upper and lower ends of the support frame 211a and 211b of the mobile body 201 on the left side of both movable members 222a and 222b of the folding mechanism 220. ) Is provided with a casing body 262 which is formed of a longitudinally elongated shaft, and a rotating fan 263 which is rotatably housed in the casing body 262. The overall length of the casing body 262 is approximately equal to the length of the casing body. A blowing blower outlet 262a extending over the entire body is formed.

In addition, the rotating fan 263 is rotated by a fan motor (not shown). In the casing body 262, an electrothermal heater (not shown) is housed in order to warm the blower air as required. In this embodiment, a halogen lamp is employed as the heater.

The casing body 262 of this blower is shown in FIG. 4 in order to change the direction of the blower outlet 262a by interlocking by the folding mechanism 220 in the folding operation of the right and left folding members R and L. FIG. It is connected to the left eccentric shaft 221L via the power transmission means 264.

The power transmission means 264 is gear-coupled with the gear 261a mounted on the shaft support portion of the lower portion of the left eccentric shaft 221L from the lower side of the lower movable member 226b, and the lower portion of the lower movable member 226b. A gear 261b axially supported by the support frame 211b, a sprocket 261c provided on the upper side of the gear 261b so as to be rotatable integrally therewith, and a chain 261e through the sprocket 261c. In addition, it is comprised by the sprocket 261d attached to the lower support shaft 261 of the casing body 262, and is connected.

As described above, the rotation of the left eccentric shaft 221L rotated in the forward and reverse directions is sequentially performed through the gears 261a and 261b, the sprocket 261c, the chain 261e and the sprocket 261d. It transfers to the casing body 262, rotates the casing body 262, and makes it possible to change the direction of the blowing blower outlet 262a.

In this case, as shown in Fig. 3, in the neutral state in which both of the left and right folding member groups L and R are completely separated from the blackboard surface 111, the blower air outlet 262a is approximately the left wiper member. It is headed for (240L). Therefore, from this state, when both eccentric shafts 221L and 221R are rotated by a predetermined angle in the clockwise rotation direction as described above, the left surface contact member group L is brought into contact with the surface of the board 111. The casing body 262 rotates in the counterclockwise direction so that the blower outlet 262a is directed toward the blackboard surface 111 on the left side of the left wiper member 240L and is blown on the blackboard surface 111. .

In addition, when the eccentric shafts 221L and 221R are rotated by a predetermined angle in a counterclockwise direction from the neutral state, the casing body 262 is used when the right folding member group R is brought into contact with the blackboard surface 111. Rotates in the clockwise direction, so that the blowing outlet 262a is directed to the blowing passage 228 formed between the cleaning liquid guide member 226 and the eccentric shaft cover 225, and the blowing passage 228 It is possible to blow on the blackboard surface 111 occupying the right side of the right wiper member 240R.

The controller 270 is mounted in place of the mobile gas 201, and as shown in FIG. 9, the rotational drive control of the erasing members 230L and 230R and the movement running control of the mobile gas 201 are shown. And a elimination member / travel control circuit 270a for performing the operation through the driving motor M1, and a folding mechanism control circuit 270b for controlling the operation of the folding mechanism 220 through the driving motor M2. And a cleaning liquid supply control circuit 270c for controlling the operation of the cleaning liquid supply means 250 via the cleaning liquid pump 251, and an operation control of the blower 260 (rotation drive control of the rotating fan 263). And a blower control circuit 270d that performs ON / OFF control of the heater.

An operation panel 271 for instructing the user controller 270 of the operation operation of the erasing device 200 is connected to this controller 270.

In the operation panel 271, the erasing operation for erasing the recorded items on the blackboard surface 111 is performed to the erasing device 200 while the main power switch S1 and the moving body 201 are moved leftward. The left erase switch S2 and the right erase switch for causing the erasing device 200 to perform an erase operation for erasing the recorded matter on the blackboard surface 111 while moving the moving body 201 to the right. (S3),

A stop switch S4 for stopping the erase operation and movement of the moving body 201, a movement switch S5 for moving the movable gas 201 to a desired position without performing the erase operation, and a blower 260 Is provided with a warm air switch S7 for blowing warm air, and a high speed switch S6 and a low speed switch S8 for converting the moving speed of the moving gas 201 to a high and low.

The controller 270 corresponds to the operation control means in accordance with the configuration of the present invention.

Next, the operation of the erasing device 200 of the present embodiment will be described.

In the erasing apparatus 200, the erasing operation for erasing the recorded matters of the blackboard surface 111 is not performed, that is, the operation stop state of the erasing apparatus 200 or the state after the erasing operation is completed by the erasing apparatus 200, When the operation is stopped by the stop switch S4 of the operation panel 271 or the like, as shown in FIG. 6, both the left folding member group L and the right folding member group R are displayed on the blackboard surface 111. The neutral state is completely separated from.

The case where the main power switch S1 of the operation panel 271 is operated to ON while the moving body 201 of the erasing device 200 is located at the left end of the blackboard 100 will be described.

When the user presses the right erase switch S3 of the operation panel 271 to erase the record on the blackboard surface 111, the drive motor is removed from the erase member / travel control circuit 270a of the controller 270. The drive motor M1 is driven to rotate forward by the drive signal sent to M1. At this time, the driving motor M1 rotates the left and right erasing members 230L and 230R in the counterclockwise direction via the gears 230a to 230e shown in FIG. 5, and the gear 230f shown in FIG. 2. The pinion 131b of the travel guide means 130 is rotated in the clockwise direction via-230i.

Thereby, while the erasing members 230L and 230R rotate, the erasing device 201 travels from the left end of the blackboard toward the right end.

At the same time, the drive motor M2 is driven forward by the drive signal transmitted from the folding mechanism control circuit 270b to the drive motor M2 at the time of control. At this time, the driving motor M2 rotates the left and right eccentric shafts 221L and 221R in the clockwise direction via the gears 221a to 221d shown in FIG. As a result, as shown in FIG. 7, only the left folding member group L including the left erasing member 230L and the left wiper member 240L among the left and right folding member groups L and R is the blackboard surface 111. The operating state is brought into contact with. In this case, the operation of the driving motor M2 is performed by the proximity sensor 221f shown in FIG. 3 that the operation state of the folding mechanism 220 in which the left folding member group L is in contact with the surface of the blackboard 111 is shown in FIG. Is stopped, and the rotation of the left and right eccentric shafts 221L and 221R is performed by a predetermined angle.

In addition, the casing body 262 of the blower 260 is rotated by a predetermined angle in a counterclockwise direction in conjunction with the rotation of the eccentric shafts 221L and 221R in a rotational direction as described above. At the picnic surface 262a of the casing body 262 on the chalkboard surface occupying the left side of the left wiper member 240L, that is, at the rear side of the wiper member 240L moving in the right direction together with the moving gas 201. Will be directed to the blackboard surface 111.

In parallel with the above operation, the cleaning liquid pump 251 is operated by a driving signal applied from the cleaning liquid supply control circuit 270c of the controller 270 to the cleaning liquid pump 251 of the cleaning liquid supplying means 250. ), The cleaning liquid is injected toward the blackboard surface 111 from above the erasing members 230L and 230R via the water supply pipe 252.

In addition, a fan motor (not shown) of the blower 260 is operated by a drive signal applied to the blower 260 from the blower control circuit 270d of the controller 270, so that the rotating fan 263 is rotated to drive the blower outlet ( Blowing is started from 262a).

In the operation of the erasing apparatus 200 as described above, an erasing operation (hereinafter referred to as a rightward erasing operation) for erasing the recorded matter on the blackboard surface 111 is performed by operating the moving gas 201 in the right direction. .

That is, in this rightward erasing operation, the left erasing member 230L moves in the right direction together with the moving gas 201 while rotating while being in contact with the surface of the blackboard 111, and at this time, the left erasing member 230L The cleaning liquid is supplied near the contact point with the blackboard surface 111. As a result, the recorded matters of the blackboard surface 111 are peeled off from the blackboard surface 111 and washed away on the blackboard surface 111 by the cleaning liquid, thereby erasing the recorded matters.

In the right-hand erase operation, since the cleaning liquid turns spirally around the erasing member by the cleaning liquid guide member, the right elimination member mainly performs the task of reducing the adhesive force of the chalk particles by spraying the cleaning liquid, rather than the peeling operation by the friction. That is, the right erasing member may be completely separated from the surface of the blackboard during the rightward erasing operation, thereby performing only the adhesive force reduction operation, but may be mainly in contact with the surface of the blackboard.

Then, the left wiper member 240L in contact with the blackboard surface 111 slides along the rear surface of the left erasing member 230L in accordance with the movement of the moving body 201 in the right direction. do.

As a result, the cleaning liquid adhering and remaining on the chalkboard surface 111 is collected by the left wiper member 240L and dropped down to be collected in the storage tank 253.

Then, the blowing liquid is blown from the blower outlet 262a of the blower 260 to the blackboard surface 111 on the rear side of the left wiper member 240L to remove the cleaning liquid from the remaining blackboard surface 111 by the wiper member 240L. Moisture evaporates and the chalkboard surface 111 is dried.

However, in such an erasing operation, when the board surface 111 cannot be sufficiently dried by the blowing air by the blower 260, that is, when the indoor humidity is high or the room temperature is low, the user may operate the control panel ( Press the warm air switch (7) of 271). The blower control circuit 270d of the controller 270 then sends a signal for operating the heater (not shown) of the blower 260 to the blower 260 to operate the heater. At this time, the warm air is blown from the blower outlet 262a of the blower 260 toward the blackboard surface 111 of the rear side of the left wiper member 240.

Thereby, the board surface 111 can be quickly dried.

In addition, when the warm air is blown by the blower 260, when the low speed switch S8 of the operation panel 271 is pressed, it is applied to the driving motor M1 from the erasing member / run control circuit 270a of the controller 270. The drive motor M1 is operated at a low speed by the drive signal, so that the moving speed of the mobile gas 201 is low. Because of this, it is possible to further increase the drying effect of the blackboard surface (111).

As described above, while the rightward erasing operation is performed, the limiting switch installed on the upper right side of the outer casing 210 by moving the moving body 201 of the erasing device 200 to the right end of the blackboard 100 When 141b contacts the contact member 141a provided at the right end of the upper frame body of the blackboard frame body 120, the limit switch 141b sends a detection signal to the controller 270. At this time, the controller 270 stops the operation of the driving motor M1, the washing liquid pump 251, and the blower 260, thereby moving the moving gas 201, rotating the eliminating members 230L and 230R, and supplying the washing liquid. , The air blowing is stopped to the blackboard surface 111 to end the rightward erasing operation by the erasing device 200.

At this time, the controller 270 reversely drives the driving motor M2 by the driving signal applied from the folding mechanism control circuit 270b to the driving motor M2, thereby causing the eccentric shafts 221L and 221R to be neutralized. Rotate counterclockwise to face the rotation position.

In this case, the operation of the driving motor M2 is stopped by detecting the proximity sensor 221f that the operating state of the folding mechanism 220 is in a neutral state, whereby the folding mechanism 220 is in the neutral state of FIG. 6. Go back to As a result, the left side folding member L (wiper member 240L and the erasing member 230L) in contact with the surface of the blackboard during the right-side removal operation is completely separated from the surface of the blackboard 111, and both left and right folding members L ) R remains completely separated from the blackboard surface 111.

Next, in the state where the moving body 201 of the erasing apparatus 200 is located at the right end of the blackboard 100, the moving object 210 is moved to the left to erase the recorded items on the blackboard surface 111. When the erasing operation (hereinafter referred to as a leftward erasing operation) is performed by the erasing apparatus 200, the user presses the left erase switch S2 of the operation panel 271. At this time, the driving motor M1 is reversely driven by a driving signal applied to the driving motor M1 from the erasing member / travel control circuit 270a of the controller 270.

The left and right erasing members 230L and 230R are rotated in the clockwise direction through the gears 230a to 230e by the reverse driving of the drive motor M1, and are also driven through the gears 230f to 230i. The pinion 131b of the guide means 130 is rotated counterclockwise. As a result, the erasing members 230L and 230R are rotated so that the moving body 201 of the erasing device 200 travels leftward from the right end of the blackboard 100 to the left end.

At the same time, the drive motor M2 is reversely driven by the drive signal applied to the electric drive motor M2 from the folding mechanism control circuit 270b of the controller 270, and the left and right eccentric shafts 21L of the folding mechanism 220 in the neutral state are reversed. 221R is rotated counterclockwise via the gears 221a to 221d.

As a result, as shown in FIG. 8, only the right side folding member group R including the right side removing member 230R and the right side wiper member 240R among the left and right folding member groups L and R contacts the surface of the blackboard 111. To the operating state. In this case, the operation of the driving motor M2 is performed by the proximity sensor 221f shown in FIG. 3 in the operation state of the folding mechanism 220 in which the right folding member group R contacts the blackboard surface 111. It is stopped while being detected and rotation of the eccentric shafts 221L and 221R in the counterclockwise direction is performed by a predetermined angle.

In addition, as described above, the casing body 262 of the blower 260 is rotated by a predetermined angle in a clockwise direction in association with the eccentric shafts 221L and 221R being rotated by a predetermined angle in the counterclockwise direction. The blower outlet 262b of the casing body 262 is directed to the blower passage 228 shown in FIG.

As a result, the blower 260 moves to the left side along with the blackboard surface 111 on the right side of the right wiper member 240R, that is, the moving gas 201, via the blow passage 228 (the wiper member). It becomes a state which can be blown to the blackboard surface 111 in the rear side of 240R.

In parallel with the above operation, the cleaning liquid supplying operation of the cleaning liquid supplying means 250 and the blowing operation of the blower 260 are performed in the same manner as in the case of the above rightward erasing operation.

In the above operation, the moving body 201 of the erasing apparatus 200 moves from the right end to the left end of the blackboard 100, thereby erasing the recorded matter on the surface 111 of the blackboard (eg, peeling and washing the recorded matter). ), The removal of the cleaning liquid on the blackboard surface 111 and the leftward erasing operation for drying the blackboard surface 111 are performed in the same manner as in the case of the above-mentioned right-direction erasing operation. In this case, peeling of the record on the blackboard surface 111 is achieved by rotating the right erasing member 230R in contact with the blackboard surface 111.

The removal of the cleaning liquid on the blackboard surface 111 is performed by the wiper member 240R which slides on the blackboard surface 111 following the right erasing member 230R.

In addition, the blackboard surface 111 is dried by blowing air blown out from the blower outlet 262a of the blower 260 to the right side (rear side) of the right wiper member 240R through the blower passage 228. You lose.

As the leftward erasing operation is performed, the moving gas 201 of the erasing apparatus 200 moves to the left end of the blackboard 100, and the limit switch installed on the upper left side of the outer casing 210. When 141b abuts on the contact member 141a provided at the left end of the upper frame of the blackboard frame body 120, the limit switch 141b sends a detection signal to the controller 270. At this time, the controller 270 stops the operation of the driving motor M1, the cleaning liquid pump 251, and the blower 26, as in the case of the right-direction cleaning operation. The rotation of the 230L and 230R, the supply of the cleaning liquid, and the blowing to the blackboard surface 111 are stopped to end the leftward erasing operation by the erasing device 200.

At this time, the controller 270 reversely rotates the driving motor M2 by the driving signal applied to the driving motor M2 from the folding mechanism control circuit 270b to rotate the eccentric shafts 221L and 221R in their neutral rotations. Turn clockwise to face the position and do so until the neutral state of the folding mechanism 220 is detected by the proximity sensor 221f.

As a result, the folding mechanism 220 returns to the neutral state of FIG. 6, and the right side folding member R (wiper member 240R and erasing member 240R) which is in contact with the surface of the blackboard 111 during the above-mentioned left erase operation. Is separated from the blackboard surface 111 and both left and right folding members L and R remain separated from the blackboard surface 111.

In this embodiment, the rotation speed of the said erasing member 230L (230R) is set to about 200-300 r.p.m at the time of the above-mentioned rightward and leftward erasing operation | movement.

That is, the rotation speed of the erasing members 230L and 230R is made relatively large, thereby maximizing the erasing effect of the recorded matter on the blackboard surface 111 by the rotation of the erasing members 230L and 230R, and the erasing member 230L. The dual effect of automatically dewatering the contaminated cleaning liquid adhering to the 230R is obtained.

Moreover, in the erasing apparatus 200 of this experiment form, when a user erases a part of the recorded matter of the blackboard surface 111, and starts the above-mentioned erasing operation from the predetermined position of the lateral direction of the blackboard 100, In order to move the moving body 201 to a desired position, the moving switch S5 of the operation panel 271 is pressed. In this case, to move the moving gas 201 to the right, press the right end of the moving switch S5, and to move to the left, press the left end of the moving switch S5. .

When the movement switch S5 is operated in this way, the controller 270 is in accordance with the movement direction of the moving body 201 instructed by the erasing member / travel control circuit 270 via the movement switch S5 from the user. By moving the drive motor M1 forward or reverse rotation, the moving gas 201 is moved in the direction of movement indicated.

In this case, the controller 270 does not operate the driving motor M2, and thus, the left and right folding members L and R remain separated from the blackboard surface 111. The instrument 220 remains neutral)

In this way, when the mobile gas 201 moves to the desired position and the user presses the stop switch S4, the controller 270 stops the driving motor M1. As a result, the mobile gas 201 is stopped at the desired position.

Then, after that, depending on which rightward and leftward erasing operation the erasing device 200 causes the erasing device 200 to be erased, the user presses either of the right erase switch S3 and the left erase switch S2 of the operation panel 271. The above-described rightward or leftward erase operation by the apparatus 200 is performed.

In other words, in the case of erasing the recorded items on the right surface of the blackboard 111 from the position at which the mobile gas 201 is stopped, the rightward erasing operation is performed by operating the right eraser switch S3. In the case of erasing the recorded items on the left surface of the blackboard surface 111 from the position at which 201 is stopped, a leftward erasing operation is performed by operating the left erase switch S2.

Thus, according to the erasing apparatus 200 of this embodiment, the erasing operation for erasing the recorded matter of the blackboard surface 111 can be performed also when the moving body 201 is moved to either left or right direction.

Furthermore, if necessary, the erasing operation of the blackboard surface 111 may be started from a desired position to erase only a part of the recorded matter of the blackboard surface 111.

After the erasing operation is finished, until the erasing operation is resumed,

In the form other than the erasing operation (stopping state of the erasing operation), such as when the mobile gas 210 is stopped or when the mobile gas 201 is moved to a desired position before the erasing operation is started, the left and right folding members (L) (R) is supported in a completely separated state from the blackboard surface 111.

Therefore, even when the erasing device 200 is not used for a long time, the wiper members 240R and 240L are not pressed against the surface of the blackboard 111. In addition, since the wiper members 240R, 240L and the erasing members 230L, 230R do not move together with the moving gas 201 while being in contact with the dry blackboard surface 111, the wiper members 240R, 240L or 240L are erased. Wear of the members 230L and 230R and the blackboard surface 111 can be prevented.

10A, 10B, and 10C show modifications related to the first embodiment described above.

In the above-described first embodiment, two wiper members are provided on the right and left both protrusions 227 and 227 of the cleaning liquid guide member 226, respectively. As shown in FIG. ), One wiper member 240L (240R) may be provided.

In the first embodiment, the two eliminating members 230L and 230R are rotatably supported between the upper and lower movable members 222a and 222b of the folding mechanism 220, respectively. As shown in 10C, one erasing member 230 may be axially supported between both movable members 222a and 222b.

In this case, in the left and right wiper members 240L and 240R respectively provided on the left and right projections 227 and 227 of the cleaning liquid guide member 226 with respect to one erasing member 230, as shown in Fig. 10B. Two may be provided on the left and right, or one may be provided on the left and right as shown in FIG. 10C.

In this case, the cleaning liquid guide member 226 has a generally circular shape in which a portion of the cleaning member and the blackboard surface are not completely in contact with each other and is partially cut, and guides the flow of the cleaning liquid even when there is only one cleaning member. It acts to make a spiral swing movement.

When the number of the erasing members 230 is set as described above, the swing of both movable members 222a and 222b is performed in accordance with the forward rotation and the reverse rotation from the neutral rotation position of the eccentric shafts 221L and 221R described above. The wiper members 240L and 240R on the left and right sides are selectively brought into contact with the surface of the blackboard 111, and the wiper members 240L and 240R are left and right contacted with the surface of the blackboard 111. The member 230 may be brought into contact with the surface of the blackboard 111, and in the neutral state of the movable members 222a and 222b, the wiper member 240L and 240R and the wiper member may be removed in the neutral state of the eliminating member 230. In order to completely separate the 240L) 240R and the erasing member 230 from the blackboard surface 111, the erasing member 230 is moved at approximately the center of the left and right directions of both movable members 222a and 222b, and both movable members are moved. It should be axially supported in front of the members 222a and 222b.

And the distance between the blackboard surface 111 and the erasing member 230 with respect to the eccentric distance Ld (Rd) of the eccentric shafts 221L and 221R, and each of the left and right wiper members 240L and 240R and the blackboard surface. What is necessary is just to set the space | interval with (111) suitably.

Next, a second embodiment of the present invention will be described with reference to FIGS. 11, 12A, and 12B. Fig. 11 is a longitudinal cross-sectional view of the main portion of the erasing apparatus of the present embodiment as viewed from the side, and Figs. In addition, in this embodiment, the basic structure other than the folding mechanism for folding the erasing member and the wiper member on the surface of the board is substantially the same as that of the first embodiment. In the configuration other than the folding mechanism, the same reference numerals as in the first embodiment are used. The detailed description is omitted.

This also applies to the third and fourth embodiments described later.

Referring to Figs. 11, 12A and 12B, reference numeral 201, like the first embodiment, includes an outer casing 210 and upper and lower support frames 211a and 211b therein, and attaches them to the blackboard 100. The mobile body supported to be movable in the lateral direction (traveling / stopping), 320 is a folding mechanism mounted on the mobile body 201, and 230L and 230R are left and right ones rotatably supported by the folding mechanism 320, respectively. The pair of erasing members 240L and 240R are the wiper members arranged on the left and right sides of the both erasing members 230L and 230R and assembled to the folding mechanism 320.

In the present embodiment, the folding mechanism 320 is a substantially rectangular upper plate 322a and lower plate 322b which are a pair of movable members arranged horizontally apart from each other by the support frame 211a and 211b. ) And a rotating frame 322 formed by integrally forming a rear plate 322c extending vertically between the upper plate 322c and the rear end of the lower plate 322b.

The upper plate 322a and the lower plate 322b of the rotating frame 322 have an upper support frame 211a via hinge shafts 321a and 321b concentrically protruding from each of the upper and lower surfaces thereof. And rotatably supported by the lower support frame 211b, whereby the rotatable frame 322 is rotatable around the axis center of both hinge shafts 321a and 321b.

Then, between the upper plate 322a and the lower plate 322b of the rotating frame 322, the above-mentioned two erasing members 230L and 230R are arranged in parallel on the left and right portions at the front side side adjacent to the blackboard surface 111, respectively. Upper and lower ends of the support shaft 231 of the erasing members 230L and 230R are axially rotatably supported by the upper plate 322a and the lower plate 322b, respectively.

In addition, the folding mechanism 320, as in the first embodiment, the cleaning liquid guide member 226 surrounding the rear outer periphery of the two erasing members 230L and 230R, and the upper plate 322a and the lower plate (of the rotating frame 322). 322b) and the wiper members 240L and 240R in the protrusions 227 and 227 (refer to FIGS. 12A and 12B) formed integrally with these, and formed on both left and right sides of the cleaning liquid guide member 226. Are installed respectively.

On the upper plate 322a of the rotating frame 322 of the folding mechanism 320, a drive motor M1 for rotationally driving the both erasing members 230L and 230R is fixedly installed, and this drive motor M1 is The gear g3 mounted on the drive shaft and the gear g3 are gear-coupled to each other via a gear g4 mounted on the support shaft 231 on the upper side of each of the erasing members 230L and 230R. The erasing members 230L and 230R are driven to rotate.

In addition, the lower support frame 211b of the mobile body 201 includes a drive motor M2 for forward and reverse rotation of the folding mechanism 320 around the axis center of the hinge shafts 321a and 321b. The gear g1 attached to the drive shaft of this drive motor M2 is geared down to the gear g2 attached to the lower hinge shaft 321b.

In the present embodiment configured as described above, the folding mechanism 320 has the driving motor M2 (for example, stepping motor,) from the neutral rotation position (neutral state of the folding mechanism 320) of the rotating frame 322 indicated by a virtual line in FIG. 12A. When the gear g1 is rotated by a counterclockwise angle by a vibration motor or the like, the rotating frame 322 is hinged through the gear g2 engaged with the gear g1 by the hinge shaft 321a. , 321b is rotated clockwise around the axis center, and the left side of the rotating frame 322 is advanced toward the blackboard surface 111.

For this reason, the left-side member group L which consists of the left side erase member 230L and the left wiper member 240L assembled in the position adjacent to the left side part of the rotating frame 322 contacts the board surface 111. In addition, in the neutral rotation position of the rotating frame 322, the left side folding member group L, the right side removing member 230R and the right side wiper member 240R are formed on the blackboard surface 111. Are separated at equal intervals.

As shown in FIG. 12B, when the gear g1 is rotated by a predetermined angle in the clockwise direction by the drive motor M2 from the neutral rotation position of the rotating frame 322 (see the imaginary line in FIG. 12B). In contrast to the above case, the rotating frame 322 is rotated counterclockwise around the axis center of the hinge shafts 321a and 321b, and the right side of the rotating frame 322 is advanced toward the blackboard surface 111.

For this reason, the group of right-handed members R made up of the right-side erasing member 230R and the right-side wiper member 240R, which are assembled at a position adjacent to the right side of the rotating frame 322, is in contact with the surface of the board 111.

Therefore, as described above, by rotating the gear g1 forward and backward by the drive motor M2, as in the case of the first embodiment described above, one of the right and left member groups L and L is left. It is possible to selectively contact the surface of the blackboard 111, and in the neutral rotation position of the rotating frame 322 can be separated from both the surface member group (R) (L) from the surface of the blackboard (111).

In the erasing device 200 of the present embodiment having such a folding mechanism 320, the basic configuration other than the above-described configuration is the same as that of the first embodiment. That is, although not shown, the cleaning liquid supply means 250, the blower 260, the controller 270, and the like described in the first embodiment are provided in the same manner as in the first embodiment.

In this case, the blower 260, which is not shown, is capable of rotating the casing body between the upper and lower support frames 211a and 211b of the moving body 201 as in the first embodiment on the left side of the rotating frame 322. Power transmission means configured by gears or sprockets so as to be axially supported and to change the direction of the blowout outlet of the casing body in response to the contact or separation of the left and right folding members L and R according to the forward and reverse rotation of the rotating frame 322. The casing body is connected to the gear g1 or g2 through the housing.

As a result, when the left folding member group L contacts the blackboard surface 111, the blower outlet of the blower 260 is blown to the blackboard surface 111 of the left side of the left folding member group L to the left blackboard surface. The air outlet passage 228 formed between the cleaning liquid guide member 226 and the blackboard 322c of the rotating frame 322 when facing the blackboard surface 111 of the right folding member R. It is directed to the blowing passage 228 so as to blow through the blackboard surface 111 on the right side of the right side member group R through.

In the configuration as described above, operation of the erasing device 200 is performed similarly to the first embodiment.

That is, when the erasing operation (rightward erasure operation) is performed by moving the moving gas 201 in the right direction, only the left-side member group L is driven by the drive motor M2, as shown in Fig. 12B. The moving gas 201 is moved in the right direction while being in contact with 111, and the rotary drive of the erasing members 230L and 230R, the supply of the cleaning liquid, and the rear side (left) of the left contact member group L are carried out. Blowing is performed to the blackboard surface 111, whereby a rightward erasing operation is performed.

Similarly, when the moving gas 201 is moved to the left to perform the erasing operation (left erasing operation), as shown in FIG. 12B by the driving motor M2, only the right side folding member group R is shown on the blackboard surface 111. ), The moving gas 201 is moved to the left in the state of contacting the board, and the board on the rear side (right side) of the rotary member of the erasing members 230L and 230R, the supply of the cleaning liquid, and the right side member group R Blowing to the surface 111 is performed, whereby a leftward erasing operation is performed.

In addition, when the erasing operation is not performed, such as when the mobile gas 201 is stopped or when the mobile gas 201 is simply moved to a desired position, the folding mechanism 320 is in a neutral state. The member groups L and R are kept separated from the blackboard surface 111.

Thereby, the effect similar to the said 1st Embodiment can be achieved.

Next, a third embodiment of the present invention will be described with reference to FIGS. 13 to 15. Fig. 13 is a longitudinal sectional view of the main part of the erasing device according to the present embodiment, Fig. 14 is a longitudinal sectional view of the main part of the erasing device from the side; In addition, in the present embodiment, as in the second embodiment, the basic constitutions other than the folding mechanism for folding the erasing member and the wiper member on the surface of the board are substantially the same as those of the first embodiment.

With reference to FIGS. 13-15A and 15B, the code | symbol 420 is a folding mechanism in this embodiment. This folding mechanism 420 is mounted on the moving body 201 having the outer casing and the upper and lower support frames 211a and 211b as in the first embodiment, and has a pair of left and right erasing members 230L and 230R. ) Is rotatably supported, and wiper members 240L and 240R are provided on both the left and right sides of the two erasing members 230L and 230R.

In this embodiment, hinge pins 421a and 421b protruding concentrically on the upper surface side of the upper and lower support frames 211a and 211b of the mobile body 201 are fixedly installed. Circular arc-shaped through holes 413L and 413R shown in FIGS. 15A and 15B extending approximately in the front-rear direction centering on the hinge pins 421a at the left and right sides of the hinge pins 421a of the frame 211a. Is formed.

The folding mechanism 420 is a substantially rectangular upper plate 422a and a lower plate 422b which are a pair of movable members disposed horizontally apart from each other by the support frames 211a and 211b. And the rotary frame 422 and the upper support frame 211a formed by integrally forming the rear plate 422c of FIG. 14 extending vertically between the upper end 422a and the rear end of the lower plate 422b. The hinge pin 421a is provided with the gear case 430 rotatably axially supported about the axis center thereof.

A pair of cylindrical connecting portions 423L and 423R for connecting the upper plate 422a to the gear case 430 at a location near both sides of the upper and left sides of the upper plate 422a of the rotating frame 422. Is protruded and the through holes 413L and 413R of the upper support frame 211a are protruded and inserted into the through holes 413L and 413R of the upper support frame 211a, respectively.

The connecting portions 423L and 423R communicate with the shaft holes 431L and 431R protruding from the bottom of the gear case 430, respectively, and are coupled to the bottom of the gear case 430. .

The lower plate 422b of the rotating frame 422 is rotatably supported by the hinge pin 421b of the lower support frame 211b via a bearing 425 provided therein.

By the configuration of the folding mechanism 420, the rotation frame 422 and the gear case 430 of the folding mechanism 420 integrally rotates around the axis center of the hinge pins 421a and 421b. It is possible. Then, between the upper plate 422a and the lower plate 422b of the rotation frame 422 of the folding mechanism 420, the both eliminating members 230L and 230R are positioned on the front side near the blackboard surface 111. Arranged in parallel, the upper end portions of the support shafts 231 of the respective erasing members 230L and 230R are inserted into the connecting portions 423L and 423R, respectively, to be rotatably supported, and the respective erasing members 230L. Lower ends of the support shaft 231 of the 230R) are rotatably supported by the lower plate 422b, respectively.

In addition, the folding mechanism 420 has a cleaning liquid guide member 226 which surrounds the outer periphery of the rear side of both the erasing members 230L and 230R similarly to the first embodiment, and has an upper plate 422a and a lower plate (of the rotating frame 422). The wiper members 240L and 240R are respectively provided at the projections 227 and 227 shown in FIG. 13 formed integrally therewith between 422b) and on the left and right sides of the cleaning liquid guide member 226. It is.

In addition, a drive motor M1 for rotationally driving the erasing members 230L and 230R is fixedly installed on the gear case 430, and the driving force of the drive motor M1 is both erased members 230L and 230R. A plurality of gears 230a to 230e to be transmitted to) are accommodated in the gear case 430.

On the upper support frame 211a, as shown in FIGS. 14 and 15A and 15B, a wire W for forward and reverse rotation of the gear case 430 of the folding mechanism 420 around the hinge pin 421a is provided. A drive motor M2 wound around the drive shaft so as to be wound / wound is fixedly installed, and the front end of the wire W is connected to the rear left end of the gear case 430.

On the upper support frame 211a, as shown in Figs. 15A and 15B, the coil spring S as a biasing means for exerting a force in the clockwise direction of the gear case 430 is formed of the gear case 430. It is installed to the rear side of the right side, one end of the coil spring is connected to the right rear end of the gear case 430 and the other end is connected to the upper support frame 211a.

In the present embodiment configured as described above, the folding mechanism 420 has the wire (from the neutral rotational position of the gear case 430 shown in FIG. 15A in phantom) (this is also in the neutral rotational position of the rotation frame 422). When the driving motor M2 is operated to draw a predetermined amount of W), the gear case 430 and the rotation frame 422 connected thereto are hinge pins 421a and 421b by the force of the coil spring. The left side of the rotating frame 422 is advanced toward the blackboard surface 111 by rotating in the clockwise direction around the axis of the axis. For this reason, the left-side member group L which consists of the left side erase member 230L and the left wiper member 240L assembled in the position near the left side of the rotating frame 422 contacts the board surface 111.

Further, in the neutral rotation position (neutral state of the folding mechanism 420) of the gear case 430 and the rotation frame 422, the left folding member group L, the right erasing member 230R and the right wiper member 240R The right side folding member group R which consists of) is separated from the blackboard surface 111 at equal intervals.

In addition, as shown in FIG. 15B, when the driving motor M2 is operated to wind the wire W a predetermined amount from the neutral rotation position of the gear case 430 (see the virtual line), the gear case is reversed from the above case. 430 and the rotating frame 422 are rotated counterclockwise around the axis center of the hinge pins 421a and 421b to resist the force of the coil spring, so that the right side of the rotating frame 422 is the blackboard surface 111 Move forward toward). For this reason, the right-hand-fold member group R which consists of the right side member 230R and the right side wiper member 240R assembled in the vicinity of the right side part of the rotating frame 422 contacts the board surface 111.

Therefore, as described above, the right folding member group R and the left folding member group are similarly to the case of the first embodiment described above by drawing out and winding up (winding up) the wire W by the driving motor M2. Any one of (L) can be selectively brought into contact with the blackboard surface 111, and the left and right folding member groups L and R are moved from the blackboard surface 111 at the neutral rotation position of the rotating frame 422. Can be completely separated.

In the erasing device 200 of the present embodiment having the above-described folding mechanism 420, the basic configuration other than the above-described configuration is the same as that of the first embodiment, and the cleaning solution supply means 250 and the blower, which are not shown, are omitted. 260, the controller 270, etc. are provided similarly to 1st Embodiment.

In this case, the transmitter 260, which is not shown, is capable of rotating the casing body between the upper and lower support frames 211a and 211b of the moving body 201 as in the first embodiment on the left side of the rotating frame 422. In addition to being axially supported, in accordance with the forward and reverse rotation of the gear case 430 and the rotating frame 422, the blower air outlet of the casing body in conjunction with the contact or separation of the left and right folding member groups (L) (R) The casing body is connected to a drive shaft of the drive motor M2 via a power transmission means constituted by a gear, a sprocket, or the like so that the direction of.

As a result, when the left folding member group L contacts the blackboard surface 111, the blower outlet of the blower 260 blows to the blackboard surface 111 of the left side of the left folding member group L so that its left blackboard surface ( 111, and when the right side member group R contacts the blackboard surface 111, a blower air outlet is formed between the cleaning liquid guide member 226 and the rear plate 422c of the rotating frame 422. It is directed toward the blowing passage 228 to blow on the right blackboard surface of the right side member group R through the blowing passage 228 of FIG.

By such a configuration, the operation of the erasing device 200 similar to the first embodiment or the second embodiment is performed.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. 16 to 18A and 18B. Fig. 16 is a longitudinal sectional view of the main part of the erasing device of the present embodiment, Fig. 17 is a longitudinal sectional view of the main part of the erasing device from the side;

The present embodiment is similar to the second and third embodiments, and the basic configuration other than the folding mechanism for contacting or separating the erasing member and the wiper member from the surface of the board is substantially the same as that of the first embodiment.

16-18A and 18B, reference numeral 520 denotes a folding mechanism in the present embodiment. The folding mechanism 520 is mounted on the movable body 201 having the outer casing 210 and the upper and lower support frames 211a and 211b as in the first embodiment, and has a pair of left and right erasing members. While 230L and 230R are rotatably supported, wiper members 240L and 240R are provided on the left and right sides of the left and right erasing members 230L and 230R.

On the left and right sides of the hinge pins 521a and 521b protruding concentrically to the upper and lower support frames 211a and 211b of the moving body 201, the left and right both sides of the hinge pins 521a. 18A and 18B, circular arc-shaped through-holes 513L and 513R extending around the hinge pins 521a in the front and rear directions are provided at positions.

The folding mechanism 520 includes a substantially rectangular upper plate 522a and a lower plate 522b which are a pair of movable members disposed horizontally apart from each other by the support frames 211a and 211b. And a rotating frame 522 formed integrally with the rear plate 522c extending vertically between the upper plate 522a and the rear end of the lower plate 522b, and the hinge pin 521a on the upper support frame 211a. ) Is provided with a gear case 530 which is axially supported around the shaft center.

A pair of cylindrical connecting portions 523L and 523R for connecting the upper plate 522a to the gear case 530 protrude in the vicinity of the left and right sides of the upper surface portion 522a of the rotating frame 522. It is installed and inserted into the through holes 513L and 513R of the upper support frame 211a. The connecting portions 523L and 523R communicate with the shaft holes 531L and 531R provided at the bottom of the gear case 530 and are coupled to the bottom of the gear case 530.

The lower plate 522b of the rotating frame 522 is rotatably supported by the hinge pin 521b of the lower support frame 211b via a bearing 525 provided therein.

By the configuration of the above-described folding mechanism 520, the rotating frame 522 and the gear case 530 of the folding mechanism 520 are integrally and inverted around the axis center of the hinge pins 521a and 521b. It is rotatable. In addition, between the upper plate 522a and the lower plate 522b of the rotating frame 522 of the folding mechanism 520, the left and right erasing members 230L and 230R are left and right at the front side portion near the blackboard surface 111. The upper and lower ends of the support shafts 231 of the left and right erasing members 230L and 230R are respectively inserted into the connecting portions 523L and 523R so as to be axially rotatably supported. Lower ends of the support shafts 231 of 230L and 230R are rotatably supported by the lower plate 522b, respectively.

In addition, the folding mechanism 520 has a cleaning liquid guide member 226 covering the vicinity of the rear side of the left and right erasing members 230L and 230R as in the first embodiment, and the upper plate 522a of the rotating frame 522, and The wiper members 240L and 240R are provided in the protrusions 227 and 227 which are provided integrally between the lower plates 522b and are formed on the left and right sides of the cleaning liquid guide member 226.

The gear case 530 is fixedly provided with a driving motor M1 for rotationally driving the left and right erasing members 230L and 230R, and the driving force of the driving motor M1 is left and right erasing members ( The plurality of gears 230a to 230e transmitted to the 230L and 230R are accommodated in the gear case 530.

In addition, on the upper support frame 211a, as shown in FIGS. 17, 18A, and 18B, a driving motor M2 for rotating the gear case 530 of the folding mechanism 520 forward and reverse around the hinge pin 521a. Is fixed to the rear side of the gear case 530.

A semicircular pinion 534 is mounted on the drive shaft of the drive motor M2, and the pinion 534 is a rack formed on the rear portion of the protrusion 533 protruding from the upper surface of the gear case 530. It is gear-coupled to 533a.

In the folding mechanism 520 of the present embodiment configured as described above, only the configuration of the drive mechanism for forward and reverse rotation driving the gear case 530 and the rotating frame 522 connected thereto is different from the third embodiment, and the gear case Forward and reverse rotation of the 530 and the rotating frame 522 is achieved by forward and reverse rotation of the pinion 534 by the drive motor M2.

Therefore, as in the third embodiment, any one of the right side folding member group R and the left side folding member group L can be selectively brought into contact with the surface of the blackboard 111 by the forward and reverse driving of the driving motor M1. In the neutral rotation position of the gear case 530 and the rotation frame 522, the left and right folding member groups L and R may be separated from the blackboard surface 111.

Configurations and operations other than those described above are the same as those in the third embodiment.

Each embodiment of the present invention does not specifically describe the case where the writing surface of the blackboard is a curved surface. However, in the case of the curved blackboard, the driving guide means for moving the moving body in accordance with the curvature of the blackboard (rack gear). Etc.) and the erasing device of the present invention can be applied only by a general design change such as the arrangement of members related to the erasing operation such as the erasing member and the wiper member to the curved surface of the board, which is within the scope of the present invention. .

Therefore, the present invention has the following effects.

In the present invention, since the cleaning liquid sprayed on the surface of the blackboard employs a cleaning liquid guide member to allow the spiral to move in a spiral manner, the cleaning liquid can be prevented from scattering and the spiraling motion around the scavenging member can be performed to increase the effect of the erase operation. have.

In addition, the present invention can improve the working speed of the entire erasing apparatus by the effective use of the sprayed cleaning liquid, the device becomes compact.

In addition, the present invention, when the erase member is employed in a double, one of the erase member is in direct contact with the blackboard to perform the erase operation by friction and at the same time the cleaning liquid on the surface of the blackboard through the rotation of the eraser less contact with the blackboard. Pressing and spraying can improve the erasing operation.

In addition, the present invention selectively controls the erasing member and the wiper member according to the direction of the erasing operation, so that the erasing operation for erasing the recorded matters on the surface of the blackboard can be performed even when moving to either side of the blackboard.

In addition, according to the present invention, the wiper makes selective contact with the blackboard so that only the wiper following the erasing member can remove the cleaning liquid according to the working direction of the erasing member so that the wiper member adheres to the surface of the blackboard or once. It is possible to prevent wear of the wiper member or the surface of the blackboard, which may occur at the time of the return movement of the erasing member or the wiper member back to its original position after the completion of the erasing operation.

In addition, the present invention allows the wiper and the erasing member to be isolated from the blackboard when the erasing apparatus is not moved, so that a part of the blackboard surface record can be erased.

In addition, since the contacting or separating operation of the erasing member and the wiper member is linked to each other, the erasing device is made compact.

Claims (29)

A mobile gas supported on the board so as to travel and stop in the lateral direction of the board; An erasing member mounted on the moving gas and rotating while contacting the surface of the blackboard during an erasing operation; Cleaning solution supply means for supplying the cleaning solution near the contact area with the surface of the blackboard during the erasing operation of the erasing member; Guide means for preventing the cleaning liquid from scattering to the outside during the erasing operation of the erasing member and allowing the cleaning liquid to pivot around the erasing member; A wiper member which slides on the surface of the board while being mounted on the mobile gas so as to wipe the cleaning liquid remaining on the surface of the board while following the rear of the erasing member; And an operation control means for controlling an erase operation of the erase device including the erase member and the wiper member. The method according to claim 1, wherein the wiper member is installed on the left and right sides of the erasing member, respectively, during the erasing operation to perform the contact or separation operation of the left and right wiper members according to the direction of the erasing operation, the movement and And a wiper member driving means for separating from the surface of the blackboard when stopped. The board according to claim 1, further comprising an erasing member driving means for contacting the erasing member with the surface of the blackboard only during the erasing operation and separating the erasing member from the surface of the blackboard when the erasing operation is not performed. Eliminator. The apparatus according to claim 1, further comprising a blower for drying the cleaning solution remaining on the surface of the blackboard after the slide movement of the wiper member. (delete) The wiper according to claim 2 or 3, wherein the wiper for driving the wiper member driving means or the driving control means for controlling the erasing member driving means makes contact with the wiper following the erasing member in contact with the blackboard during the erasing operation. The eraser of the blackboard, characterized in that configured to be separated from. (delete) 7. The apparatus of claim 6, wherein the operation control means comprises means for moving the moving gas to a position indicated by the user during the movement in which the erasing operation is not performed. (delete) (delete) (delete) (delete) (delete) (delete) (delete) (delete) The method according to claim 1, wherein the erase member is provided in double, so that the erase member in the rear of the erase direction is in contact with the surface of the blackboard during the erase operation, and the erase member in front of the erase direction is in non-contact, so that the front erase member is chalk particles. And a driving control means for controlling the movement of the wiper member driving means or the erasing member driving means so as to reduce the adhesive force of the backing member, and the rear erasing member lowers the adhesive force and the peeling action. (delete) (delete) (delete) (delete) (delete) (delete) (delete) (delete) (delete) The method according to claim 1, And the movable body is configured such that lateral traveling is controlled by position sensing means respectively provided on both the left and right ends of the upper frame of the blackboard frame and the upper both sides of the outer casing of the movable body. A mobile gas supported on the board so as to travel and stop in the lateral direction of the board, An erasing member mounted on the moving gas and rotating while contacting the surface of the blackboard during an erasing operation; Cleaning solution supply means for supplying a cleaning solution near the contact area between the erasing member and the surface of the blackboard during an erasing operation; A wiper member which slides on the surface of the board while being mounted on the mobile gas so as to wipe the cleaning liquid remaining on the surface of the board while following the rear of the erasing member; The wiper members are disposed on the left and right sides of the elimination member, respectively, and are mounted on the movable gas, and the left wiper member and the right wiper member are provided so as to be accessible to the surface of the board, respectively. In operation, the wiper member on the rear side of the erasing member, which moves in one of the left and right directions together with the moving gas, among the left and right wiper members, is brought into contact with the surface of the board, A access mechanism for allowing each wiper member to approach each other so that the wiper member is separated from the surface of the blackboard; And an operation control means for controlling an erase operation during the erase operation. Supplying a cleaning liquid in the vicinity of the contact area between the erasing member and the surface of the blackboard; Rotating the erasing member, the outer peripheral portion of which is in sliding contact with the surface of the blackboard, around the longitudinal axial center of the blackboard; Guiding the flow of the cleaning liquid supplied to the erasing member to prevent the cleaning liquid from being scattered to the outside and swiveling spirally around the erasing member to relieve the adhesive force of the chalk particles; Bleaching chalk particles by friction between the rotating eliminating member and the surface of the blackboard; A transfer step of moving the rotating gas member and the moving gas provided with the cleaning liquid supply part in a transverse direction of the board; The cleaning liquid removal wiper member disposed on the left and right sides of the eliminating member while following the eliminating member to slide the surface of the blackboard to remove the cleaning liquid attached to the surface of the blackboard by the slide movement. Elimination method.