WO2014035099A1 - Dispositif d'effacement de tableau noir - Google Patents

Dispositif d'effacement de tableau noir Download PDF

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Publication number
WO2014035099A1
WO2014035099A1 PCT/KR2013/007594 KR2013007594W WO2014035099A1 WO 2014035099 A1 WO2014035099 A1 WO 2014035099A1 KR 2013007594 W KR2013007594 W KR 2013007594W WO 2014035099 A1 WO2014035099 A1 WO 2014035099A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
wiping
housing
friction
medium
Prior art date
Application number
PCT/KR2013/007594
Other languages
English (en)
Korean (ko)
Inventor
김종우
Original Assignee
Kim Jong Wu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kim Jong Wu filed Critical Kim Jong Wu
Publication of WO2014035099A1 publication Critical patent/WO2014035099A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00—Blackboard or slate cleaning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00—Blackboard or slate cleaning devices
    • B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00—Blackboard or slate cleaning devices
    • B43L21/04—Wiper holders

Definitions

  • the present invention relates to a blackboard eraser device, and more particularly, to a blackboard eraser device that can easily clean the blackboard and can be easily collected and separated so that chalk does not fly.
  • the blackboard eraser is made to erase letters by holding and moving a rectangular eraser made of cloth by hand. If you use such an eraser, the chalk powder may blow, which may adversely affect the health of the human body.When removing the chalk powder attached to the cloth, the user may blow the cloth directly off the cloth or remove the cloth by a separate device. I'm going to blow it off.
  • Korean Laid-Open Patent Publication No. 10-2005-0115403 discloses a "electric blackboard eraser", and specifically, has an internal space, an operation switch is provided on one side of the upper portion, and an eraser body on which a chalk suction unit is formed, and an operation thereof.
  • the suction motor rotated by the external power supplied by the operation of the switch, the suction impeller axially coupled to the suction motor, and coupled to the lower part of the eraser body.
  • Chalk furnishing member protruding from the chalk adsorbing portion the filter portion is installed between the chalk furnishing member and the suction impeller to collect the chalk powder adsorbed by the chalk furnishing member, and the upper portion is open to accommodate the eraser body
  • An accommodation space is formed inside, and one side is opened to the outside, and the cleaner body is opened and detachably coupled to the accommodation space, and is buried in the chalk hair member.
  • the brush member is to be removed by brushing the chalk powder, and detachably coupled to the inside of the cleaner body so that one side is composed of a dust collector exposed to the outside of the cleaner body to discharge the chalk powder removed from the chalk hair member to the outside.
  • the blackboard eraser effectively shakes off the chalk powder on the board and absorbs it, thereby preventing the scattering of the chalk powder and minimizing the damage of the educator and the trainee.
  • the object is a housing;
  • a friction roller coupled to the housing and formed to rotate in contact with the blackboard; It is coupled to the housing so that one side is exposed, it is formed to rotate in contact with the blackboard, and rotates in the opposite direction to the friction roller, the cleaning roller to wipe the blackboard;
  • a first medium which mediates the rotational movement of the friction roller and the rotational movement of the wiping roller;
  • a second medium for mediating the rotational motion of the friction roller and the reciprocating motion of the hair part.
  • the first medium includes a friction gear that is coupled to the friction roller and rotates together, and a wipe gear that is coupled to and rotates together with the wipe roller, and the friction gear and the wipe gear are connected to each other directly or indirectly.
  • the rotating shaft of the wiping roller is in the form of a prism, and is detachable from the wiping roller, and an end thereof is fitted in the center of the wiping gear.
  • the housing includes a cover surrounding the hair part and the wiping roller, and a partition wall fixed to the cover and separating a space in which the wiping roller and the hair part and the friction roller separate the space in which the first medium and the second medium are located.
  • the partition wall is divided into a first partition wall located at one end of the rotating shaft of the wiping roller and a second partition wall located at the other end, and the friction roller is positioned outside the first partition wall and rotates in conjunction with the wiping roller.
  • a first friction roller and a second friction roller positioned outside the second partition wall and rotating in conjunction with the hair part, wherein the first medium is located outside the first partition wall, and the second medium wall is located above the second partition wall. Located outside.
  • the housing may include a first finishing wall for receiving the first friction roller and the first mediator between the first partition and the second friction roller and the second mediator between the second partition. And a second finishing wall.
  • the housing may include a finishing plate coupled to the lower side of the cover to expose a portion of the lower side of the wiping roller, and both ends of the housing close to the first and second partitions to form a storage space.
  • the second medium includes a rotary arm that rotates in association with the friction roller and a rotary protrusion spaced apart from the rotary shaft of the rotary arm and fixed to the rotary arm, wherein the hair part is rotatably fixed to the housing and one side.
  • a rotating arm having a sliding groove formed therein by sliding the rotary protrusion, and the striking plate fixed to the rotating arm and striking the outer circumferential surface of the wiping roller, wherein the length of the sliding groove is 2 than the rotation radius of the rotary protrusion. It is made up of more than twice.
  • the striking plate extends from the pivotal arm in a direction opposite to the rotation direction of the wiping roller.
  • the hitting plate is provided with a plurality of elastic projections in the direction toward the wiping roller.
  • the housing is provided with a lid for opening and closing the inside of the housing.
  • the wiping roller rotates in the opposite direction to the friction roller by the engagement of the gear, so that the blackboard can be effectively cleaned without a separate power device, and when the chalk powder is removed, the chalk powder cannot effectively gather inside the housing.
  • the chalk powder is collected in the storage space and the chalk powder is prevented from moving to the first and second media, thereby preventing malfunction of the chalk powder.
  • the inside of the housing is easily removable, thereby making it easy to replace and repair the components constituting the device.
  • FIG. 1 is a perspective view showing a blackboard eraser device according to an embodiment of the present invention
  • FIG. 2 is an exploded perspective view showing the blackboard eraser device shown in FIG. 1;
  • FIG. 3 is a cross-sectional view of the blackboard eraser shown in FIG. 1 as viewed from the front;
  • FIG. 4 is a perspective view of a portion of the board eraser illustrated in FIG. 1, with a part of the configuration removed;
  • FIG. 5 and 6 are cross-sectional views of the blackboard eraser device shown in FIG.
  • blackboard eraser 100 housing
  • first finishing wall 140 second finishing wall
  • finishing plate 151 engaging projection
  • gap plate 160 buffer frame
  • storage space 180 auxiliary roller
  • hairy part 410 slewing rock
  • FIG. 1 is a perspective view showing a blackboard eraser device 1 according to an embodiment of the present invention
  • Figure 2 is an exploded perspective view showing the blackboard eraser device 1 shown in Figure 1
  • Figure 3 is A cross-sectional view of the blackboard eraser 1 shown from the front.
  • Blackboard eraser device 1 is a device for cleaning the blackboard, the housing 100, the friction roller 200, the wiping roller 300, hairs 400, the first medium 500 and the second It comprises a medium 600.
  • the housing 100 forming the overall appearance of the blackboard eraser 1 has a friction roller 200, a wiping roller 300, a hair part 400, a first medium 500, and a second medium 600 therein. ) Are combined in a shape that is accommodated, but the friction roller 200 and the wiping roller 300 are exposed to the outside (downward direction of FIG. 1) as a part to be in contact with the blackboard.
  • the housing 100 includes a cover 110, a partition wall 120, finish walls 130 and 140, and a finish plate 150, and each component is made to be separated and assembled.
  • the buffer frame 160 may be further included.
  • the cover 110 is generally formed in the shape of the letter 'c' shape, the size of the user enough to grip. That is, the width is made of a size corresponding to the palm area of the user, the vertical width is formed longer than the width.
  • a non-slip projection 115 of the protruding form is formed, which is formed at a point corresponding to the user's finger.
  • the anti-slip protrusion 115 may be formed on both walls of the cover 110 and may be formed in various forms to prevent slipping.
  • an opening 112 is formed above the cover 110, and a lid 113 may be formed to block the opening 112.
  • the lid 113 is detachably coupled at the opening and closing hole 112, and the lid 113 may be opened to discharge chalk powder or the like stored in the housing 100 to the outside.
  • the opening and closing hole 112 is formed in a circular shape so that it can be easily connected to the vacuum cleaner.
  • the opening and closing hole 112 is formed to be biased on either side along the longitudinal direction of the cover 110, so that the user easily grips the chalk powder through the opening and closing hole 112 in a state in which the user grips the cover 110. Can be discharged.
  • the blow plate 420 forming the hairs 400 may be formed in the form of a film, when the opening and closing hole 112 is formed in the center of the cover 110, the suction force by the vacuum cleaner or the like There is a risk that the impact plate 420 is sucked and damaged by the strong action, in order to prevent this in the present invention, the opening and closing hole 112 is formed to be formed in one of the longitudinal direction of the cover 110.
  • a plurality of coupling guides 114 are formed on both inner side surfaces of the cover 110, and the coupling guides 114 may be formed in a protruding or recessed shape, and a plurality of coupling guides 114 may be formed at regular intervals.
  • Coupling guide 114 is formed long in the direction perpendicular to the longitudinal direction of the cover 110, so that the partition wall 120 and the finishing wall can be easily coupled to the cover (110). That is, as shown in FIG. 2, the partition wall 120 (the first partition wall 120 and the second partition wall 120) or the finishing wall (the first finishing wall 130 and the second finishing wall 140) may be formed.
  • the sliding guides When pushed upwards so as to be located between the coupling guides 114, the sliding guides may slide upward from the bottom of the cover 110 along the coupling guides 114, and the partition wall 120 and the finishing wall may extend in the longitudinal direction of the cover 110. It is combined firmly without being moved. In addition, the separation of the partition wall 120 and the finishing wall can be easily removed by moving down along the coupling guide 114, it is possible to easily replace or repair the internal parts of the cover 110, if necessary.
  • the partition wall 120 constituting the housing 100 is divided into a first partition wall 121 and a second partition wall 122, and the first partition wall 121 is located at one end side of the rotation shaft 310 of the wiping roller 300.
  • the second partition wall 122 is positioned at the other end side of the rotation shaft 310 of the wiping roller 300.
  • the first partition wall 121 and the second partition wall 122 divide the space inside the housing 100 into three, and the first medium 500 is separated from the storage space 170 by the first partition wall 121.
  • the second medium 600 is positioned in the space separated from the storage space 170 by the second partition wall 122.
  • chalk powder is collected inside the space formed by the first partition wall 121 and the second partition wall 122, and the chalk powder is formed by placing the first medium 500 and the second medium 600 outside the space. It is prevented from penetrating toward the first medium 500 and the second medium 600.
  • first medium 500 and the second medium 600 may be formed of a combination of a plurality of gears, and the first partition wall 121 may be formed together with the first finishing wall 130. Gears) to support the axis of rotation, and the second partition wall 122 is configured to support the axis of rotation of the second medium 600 (a plurality of gears) together with the second finishing wall 140. .
  • the first finishing wall 130 and the second finishing wall 140 are coupled to the front and rear longitudinal directions of the housing 100, respectively, so that the first medium 500 and the second medium 600 are not exposed to the outside. do.
  • the shock absorbing frame 160 is fixed to the cover 110.
  • the frame 160 is made of an elastic material such as rubber to protect the blackboard eraser device 1 according to the present invention from external impact.
  • the inner surfaces of the first finishing wall 130 and the second finishing wall 140 may be configured to rotate the axes of rotation of the first medium 500 (the plurality of gears) and the second medium 600 (the plurality of gears). It is made to support it.
  • the finishing plate 150 is coupled to the lower side of the cover 110 so that a part of the lower side of the wiping roller 300 is exposed, and both ends thereof are in close contact with the first and second partition walls 121 and 122, and the inside of the housing 100.
  • the storage space 170 is formed. That is, the space by the cover 110, the first partition wall 121, the second partition wall 122, the finishing plate 150 and the wiping roller 300 becomes the storage space 170, the storage space 170 Chalk is filled. And, as shown in Figure 2, the finishing plate 150 is divided into both sides of the wiping roller (300).
  • the closing plate 150 is detachably coupled to the cover 110, for this purpose, the coupling plate 151 is formed on the closing plate 150, and the coupling groove formed to engage the coupling protrusion 151 to the cover 110. 111 is formed.
  • a gap plate 152 is formed close to or close to the wiping roller 300, and the chalk powder introduced into the storage space 170 exits the bottom of the finishing plate 150. prevent.
  • an auxiliary roller 180 having a shape symmetrical with the friction roller 200 is formed around the wiping roller 300.
  • the auxiliary roller 180 is rotatably coupled to the housing 100, but does not rotate in conjunction with the friction roller 200 and the wiping roller 300.
  • the auxiliary roller 180 is coupled to the housing 100 at a position slightly higher than the friction roller 200 and the wiping roller 300, the friction roller 200 and the wiping roller ( The auxiliary roller 180 may not rotate because the auxiliary roller 180 does not contact the blackboard when the 300 contacts the blackboard.
  • the wiping roller 300 may be made of a material such as a cloth or sponge, the auxiliary roller 180 prevents the wiping roller 300 from being excessively compressed, and the user erases the blackboard eraser 1 with a suitable force. ) To the board.
  • the friction roller 200 is formed to rotate in contact with the blackboard. That is, when the blackboard eraser 1 is moved in close contact with the blackboard, the friction roller 200 is formed to rotate by the frictional force acting between the blackboard.
  • the friction roller 200 is located on the outside of the first partition wall 121, the first friction roller 210 and rotates in conjunction with the wiping roller 300, the second partition wall 122 It may be divided into a second friction roller 220 is located on the outside and rotates in conjunction with the hairs 400.
  • the first friction roller 210 and the second friction roller 220 are formed so as to generate a sufficient friction when contacting the blackboard, so that the edge end contacting the blackboard is preferably made of a rubber-like material. .
  • the first friction roller 210 is rotatably coupled between the first partition wall 121 and the first finishing wall 130 so that the first friction roller 210 may be slightly exposed below the housing 100, and the second friction roller 220 may also be exposed. It is rotatably coupled between the second partition wall 122 and the second finishing wall 140 so that the housing 100 is slightly exposed below.
  • the first medium 500 mediates the movement of the friction roller 200 and the wiping roller 300, and in particular, mediates the rotational movement of the first friction roller 210 and the rotation of the wiping roller 300.
  • the first medium 500 may include a friction gear 510 and a wiping gear 520 and further include a first gear and a second gear.
  • the friction gear 510 and the wiping gear 520 may be connected to rotate to directly engage each other, and may be connected to rotate via the first gear 530 and the second gear 540.
  • the first gear 530 and the second gear 540 are preferably included.
  • the first gear 530 is formed with a first-first gear 531 meshing with the second gear 540, and the second gear 540 has a second-second gear meshing with the wiping gear 520. 541 is formed.
  • the friction gear 510 rotates together with the first friction roller 210, and as the friction gear 510 rotates, the first gear 530, the second gear 540, and the wiping gear 520 interlock with each other. Will rotate. That is, when the chalkboard eraser 1 moves to the left side based on FIG. 3 (assuming a state where the chalkboard is in close contact with the bottom), the first friction roller 210 rotates in a counterclockwise direction and the wiping roller 300 Rotates clockwise.
  • Wiping roller 300 is coupled to the housing 100 so that the lower side is exposed, is formed to be able to rotate in contact with the blackboard. However, the wiping roller 300 is not rotated by the frictional force with the blackboard like the friction roller 210, but rotates in conjunction with the friction roller 210.
  • the wiping roller 300 is rotatably coupled between the first partition wall 121 and the second partition wall 122.
  • the central part of the wiping roller 300 (a part surrounding the rotating shaft) is made of a relatively large material such as plastic or metal. And the part forming the outer circumferential surface of the wiping roller 300 is made of a material such as cloth, brushed brush or brush, is formed so that the chalk powder can be effectively adsorbed. In addition, between the central portion and the outer circumferential surface in the wiping roller 300 is made of a material having a plurality of pores, such as a sponge and a large amount of chalk powder can be adsorbed, even if the blackboard eraser device (1) is in close contact with the blackboard wipe The rotation of the 300 is formed to be made smoothly.
  • the rotating shaft 310 of the wiping roller 300 may be formed in a pillar shape, and the rotating shaft 310 may be formed to be withdrawn within the wiping roller 300.
  • the rotary shaft 310 is supported by the first partition wall 120 and is connected to the wiping gear 520, in which case the rotary shaft 310 of the wiping roller 300 is inserted into the wiping gear 520 so that the rotary shaft 310 fits snugly.
  • a square groove is formed.
  • the rotating shaft 310 of the prismatic roller wiping roller 300 is preferably formed in the form of a quadrangular pillar for stable transmission of power.
  • the wiping roller 300 is rotated in the opposite direction to the friction roller 200. That is, when moving to the left relative to Figure 3, since the wiping roller 300 is rotated in the clockwise direction, the wiping roller 300 can wipe the blackboard strongly from the contact surface with the blackboard and can effectively wipe the blackboard.
  • FIG. 4 is a perspective view showing a portion of the housing 100 so that the inside of the blackboard eraser 1 shown in FIG. 1 appears, and FIGS. 5 and 6 show the blackboard eraser 1 shown in FIG. This is a sectional view from the back. More specifically, FIG. 5 is a view showing a state in which the second finishing wall 140 is excluded, and FIG. 6 is a view illustrating a state in which the second finishing wall 140 and the second partition wall 122 are excluded.
  • the second medium 600 mediates the movement of the friction roller 200 and the hair part 400, and in particular, mediates the rotational movement of the second friction roller 220 and the reciprocating motion of the hair part 400.
  • the second medium 600 is spaced apart from the rotary arm 640 and the rotary shaft 641 of the rotary arm 640 to rotate in conjunction with the second friction roller 220, the rotary projection 650 is fixed to the rotary arm 640 ).
  • the second medium 600 includes a third gear 610, a fourth gear 620, a fifth gear 630, a rotation arm 640, and a rotation protrusion 650.
  • the rotary arm 640 should rotate at a very high speed compared to the second friction roller 220.
  • the third gear 610, the fourth gear 620 and the fifth gear 630 are shown in FIG. It is preferred to be formed to have a gear ratio in the form as shown.
  • the third gear 610 is coupled to the second friction roller 220 to rotate together with the second friction roller 220.
  • the fourth gear 620 is formed to mesh with the third gear 610
  • the fifth gear 630 is formed to mesh with the fourth gear 620.
  • the fifth gear 630 has a very small gear ratio compared to the third gear 610 and the fourth gear 620, and thus the fifth gear 630 is much faster than the rotation of the second friction roller 220. It will rotate at speed.
  • the fifth gear 630 rotates together with the rotary arm 640, and both rotation axes thereof coincide.
  • the rotation protrusion 650 is formed to be spaced apart from the rotation axis 641 of the rotation arm 640, it rotates with a predetermined rotation radius when the second friction roller 220 is rotated.
  • the hair part 400 includes the pivotal arm 410 and the striking plate 420.
  • Rotating arm 410 is rotatably coupled to the housing 100, specifically, the rotation axis 412 of the pivoting arm 410 is rotatably supported by the first partition wall 121 and the second partition wall 122. .
  • the rotating arm 410 is provided with a sliding groove 411 in which the rotary protrusion 650 is inserted and slid.
  • the length of the sliding groove 411 is made twice or more than the rotation radius of the rotation protrusion 650.
  • the rotation protrusion 650 rotates the rotation arm 410 in a predetermined angle range while moving the sliding groove 411 when the rotation arm 640 rotates.
  • the rotation range of the rotational arm 410 increases, and as the rotation radius of the rotation protrusion 650 decreases, the rotation range of the rotation arm 410 decreases. That is, the larger the radius of rotation of the rotary protrusion 650, the hitting plate 420 coupled to the rotational arm 410 can hit the outer peripheral surface of the wiping roller 300 more strongly, which is the size of the blackboard eraser (1) And the structure can be adjusted appropriately.
  • the striking plate 420 is fixed to the rotational arm 410 (particularly, to the rotating shaft 412), and rotates in a predetermined angle range according to the rotation of the rotational arm 410, thereby wiping the roller 300.
  • Hit the outer circumference That is, the outer surface of the wiping roller 300 hit the wiping roller 300 in the storage space 170, and shake off the chalk powder adsorbed on the wiping roller 300 to reveal the chalk powder inside the storage space 170, in particular, the finishing plate 150. To be stacked.
  • the hair part 400 is reciprocating while rotating based on the rotating shaft 412, and provided with a blow plate 420 to strike the outer peripheral surface of the wiping roller 300 toward the cleaning roller 300, the hair part Blow plate 420 of 400 is made to shake off the droplets in a manner to strike the outer peripheral surface of the wiping roller (300).
  • the action of the hairs 400 makes it possible to effectively shake off the droplets adsorbed on the wiping roller 300 by using the properties of the stop inertia, and also when the hairs 400 hit the wiping rollers, the wiping roller 300 ) Instantaneously compresses so that the droplets can be easily discharged out of the wiping roller 300 by an increase in the pressure inside the wiping roller 300.
  • the action of the hair part 400 does not act in the direction opposite to the movement direction of the wiping roller 300, without hindering the rotation of the wiping roller 300, the wiping roller 300 will eventually rotate smoothly It becomes possible.
  • the striking plate 420 is formed in the form extending from the rotating arm 410 to the opposite direction of rotation of the wiping roller 300. That is, when the blackboard eraser 1 moves to the right based on FIG. 6, the wiping roller 300 rotates in a counterclockwise direction, and the impact plate 420 is based on the rotation axis 412 of the pivot arm 410. By rotating the chalk powder toward the right receiving space 170, it is possible to shake out the chalk powder more effectively.
  • the impact plate 420 is formed relatively thin and is made in the form of a film having an elastic force, a plurality of elastic projections 421 is formed in the direction toward the wiping roller (300).
  • the elastic protrusion 421 is made of a material such as rubber and is formed toward the end of the striking plate 420. Accordingly, the elastic protrusion 421 may hit the outer circumferential surface of the roller 300 more strongly due to the elastic force (generated by the bending of the strike plate 420) of the strike plate 420 during the rotation of the strike plate 420. And since the flow of air by the blow plate 420 is increased, it is possible to more effectively shake off the chalk powder adsorbed on the wiping roller (300).
  • the hair part 400 may be formed of a plurality, as shown in Figure 6, the pivot arm 410 and the striking plate 420 is provided so that a plurality of The surface may be formed to hit the outer peripheral surface of the wipe roller 300.
  • the blackboard eraser device 1 can effectively wipe the blackboard without a separate power device through the wiping roller 300 which rotates in the opposite direction to the friction roller 200 by the engagement of the gear, and the chalk powder When removing the chalk powder is not effectively gathered inside the housing 100 and blown by the hair roller 400, which works in conjunction with the friction roller 200, by repeatedly repeatedly hitting the outer peripheral surface of the cleaning roller 300 is adsorbed
  • the chalk powder can be easily shaken off.
  • first partition wall 121 and the second partition wall 122 are installed in the housing 100, chalk powder is collected in the storage space 170, and the chalk powder is directed toward the first medium 500 and the second medium 600. By preventing movement, it is possible to prevent malfunction caused by chalk powder.
  • the blackboard eraser device According to the blackboard eraser device according to the present invention, through the polishing roller rotated in the opposite direction by the engagement of the gear can effectively clean the blackboard without a separate power device and when the chalk powder is removed, such chalk powder inside the housing Not only do not fly in, but also because the hairs work in conjunction with the friction roller can easily shake off the chalk powder adsorbed on the outer circumferential surface of the wipe roller, the use of the related technology only as it exceeds the limitations of the existing technology This is an invention that is industrially applicable because it is not only sufficient marketability or sales potential of the applied device but also practically and clearly.

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  • Drawing Aids And Blackboards (AREA)

Abstract

La présente invention concerne un dispositif d'effacement de tableau noir comprenant : un logement ; un rouleau de friction combiné au logement et formé pour entrer en contact avec un tableau noir et tourner ; un rouleau d'essuyage combiné au logement pour permettre à un premier côté de celui-ci d'être exposé et formé pour entrer en contact avec le tableau noir et tourner pour essuyer le tableau noir tout en tournant dans la direction opposée à celle du rouleau de friction ; une partie d'époussetage qui tourne en alternance autour d'un arbre rotatif à l'intérieur du logement et dans laquelle une partie de frappement destinée à frapper la surface circonférentielle extérieure du rouleau d'essuyage est formée sur une surface vers le rouleau d'essuyage ; un premier moyen pour gérer le déplacement du rouleau de friction et du rouleau d'essuyage ; et un second moyen pour gérer le déplacement du rouleau de friction et de la partie d'époussetage.
PCT/KR2013/007594 2012-08-31 2013-08-23 Dispositif d'effacement de tableau noir WO2014035099A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120096482A KR101247541B1 (ko) 2012-08-31 2012-08-31 칠판지우개 장치
KR10-2012-0096482 2012-08-31

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WO2014035099A1 true WO2014035099A1 (fr) 2014-03-06

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PCT/KR2013/007594 WO2014035099A1 (fr) 2012-08-31 2013-08-23 Dispositif d'effacement de tableau noir

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WO (1) WO2014035099A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115570908A (zh) * 2022-11-08 2023-01-06 王小净 一种黑板擦

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105415944B (zh) * 2014-10-30 2017-03-22 杨文朔 一种减少粉尘污染的黑板擦

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03119290U (fr) * 1990-03-15 1991-12-09
JP2000127687A (ja) * 1998-10-28 2000-05-09 Masahiro Sato チョーク粉 集塵機構内蔵黒板消し
KR200412463Y1 (ko) * 2005-12-27 2006-03-28 최선표 칠판 지우개
KR20120020785A (ko) * 2010-08-31 2012-03-08 이남연 마찰방식 칠판지우개 제조방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03119290U (fr) * 1990-03-15 1991-12-09
JP2000127687A (ja) * 1998-10-28 2000-05-09 Masahiro Sato チョーク粉 集塵機構内蔵黒板消し
KR200412463Y1 (ko) * 2005-12-27 2006-03-28 최선표 칠판 지우개
KR20120020785A (ko) * 2010-08-31 2012-03-08 이남연 마찰방식 칠판지우개 제조방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115570908A (zh) * 2022-11-08 2023-01-06 王小净 一种黑板擦
CN115570908B (zh) * 2022-11-08 2023-10-24 王小净 一种黑板擦

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