JP3074330U - Blackboard with magnet pen - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a new magnetic pen-based blackboard capable of drawing characters and pictures with a magnet pen having a magnet at the tip, or redrawing the drawn letters and pictures by so-called partial erasing. provide. SOLUTION: A pen tip receiving portion or a knob is arranged on the upper side of a drawing board, and an erasing magnet is arranged movably along the same drawing board on the lower side. And are integrally connected in a movable state as described above.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a magnetic pen-based black plate that can draw a character or a picture with a magnet pen having a magnet at the tip, or redraw the drawn character or picture by so-called partial erasing.

[0002]

[Prior art]

 This type of conventionally known magnetic pen-based blackboard uses a long magnet-made sliding rod arranged on the back side of a drawing board to move all the characters and pictures drawn on the drawing board by moving it along the drawing board. It was a configuration that erased all at once, and there was a fatal flaw that it was not possible to perform operations such as intentionally erasing a narrow part of a drawn character or picture and redrawing that part.

[0003]

[Problems to be solved by the invention]

 An object of the present invention is to provide a new magnetic pen-based blackboard that solves the above-mentioned defects.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the magnetic pen-based blackboard according to the present invention has a pen tip receiving portion on the upper side of the drawing board, and an erasing magnet having a magnetic force larger than the magnet of the pen tip on the lower side. The pen tip receiving portion and the erasing magnet are integrally connected via an auxiliary member or the like so as to be movable as described above.

[0005] Alternatively, a knob portion is arranged on the upper side of the drawing plate, and an erasing magnet is similarly arranged on the lower side so as to be movable along the drawing plate, and the knob portion and the erasing magnet are integrally mounted via an auxiliary member or the like. They are connected in a movable state.

[0006]

In the embodiment shown in the figure, the upper and lower hard synthetic resin transparent plates 1 and 2 are partitioned by a partition 3 to form a number of small chambers 4 between them, and each of these small chambers 4 has The drawing board 7 is formed by sealing the white opaque liquid 6 in which the iron sand 5 is dispersed in a state where the powdery magnetic material is movable by receiving a magnetic force.

[0007] Separately from this, a square hand-side recess 9 made of a hard synthetic resin material and having a front surface and an upper surface opened, and a square front recess which has only an upper surface opened. A base plate 11 having an upper surface 10 is formed, a shallow concave portion 12 which is slightly smaller is provided at the center of the bottom surface of the proximal side concave portion 9 and the drawing plate 7 is fitted into the shallow concave portion 12 so as not to be displaced. By doing so, the blackboard main body 13 is constructed in which the drawing board 7 is stretched so as not to be pulled out at the bottom of the hand-side recess 9, and a card slot 14 long to the left and right is formed on the front wall surface of the front recess 10. Is opened, and a large number of cards 15 are stored in the same-side recess 10 through the card entrance 14, thus forming a replaceable display window 16.

Further, separately from these, a folded auxiliary member 18 is formed of a hard synthetic resin material, and a dish-shaped pen tip receiving portion 21 having an inner round bottom is provided at the tip of the upper side portion 20 of the auxiliary member 18. Similarly, a circular plate-shaped portion 23 which is opened upward at the tip of the lower side portion 22 is provided so that the pen tip receiving portion 21 and the circular plate-shaped portion 23 have a corresponding positional relationship with each other. A disk-shaped ferrite magnet 24 for erasing is fitted in the shape portion 23, and a long moving slit 25 is formed on the front wall surface of the hand-side recess 9 so as to be assisted from behind the moving slit 25. By inserting the upper side portion 20 of the member 18, the upper side portion 20 and the pen tip receiving portion 21 can move along the upper surface of the drawing board 7, and the lower side portion 22 and the ferrite magnet 24 can move along the lower surface of the bottom of the proximal side recess 9. Attach as You.

Further, separately from these, a granular magnet 27 smaller than the disc-shaped ferrite magnet 24 for erasure and having a weak magnetic force is attached to the tip of a rod 26 made of a hard synthetic resin material to draw characters and pictures. The drawing magnet pen 28 is constructed, and desired characters and pictures are drawn on the drawing board 7 when the granular magnet 27 of the drawing magnet pen 28 is arbitrarily moved while lightly touching the upper surface of the drawing board 7. It is like that.

In the drawing, reference numeral 30 denotes a holder portion of the drawing magnet pen 28, and reference numeral 31 denotes an elastic leg for pushing up the disk-shaped ferrite magnet 24 to increase the reliability of its function.

[0011]

[Action]

 That is, in the above description, when the tip of the drawing magnet pen 28 (granular magnet 27) is moved against the upper surface of the drawing plate 7 and moved, the iron sand 5 in the small chamber 4 existing at the moving position is attracted to the top surface. The handwriting is displayed by discoloring the small chamber 4 to black, and the characters or pictures to be erased, for example, when the drawing magnet pen 28 is inserted into the pen tip receiving portion 22 with the pen tip of the drawing magnet pen 28 inserted. When it is moved at a part or all of the space, the dish-shaped part 23 and the disc-shaped ferrite magnet 24 also move together via the auxiliary member 18, and the iron sand 5 adsorbed on the top surface of the small chamber 4 located at the moving part Is attached to the bottom surface of the small chamber 4 to erase the handwriting by changing the top surface of the small chamber 4 to white. Erase (Partial redraw It is that to be able of.

In the present invention, a finger operation knob having the shape and color of a child's favorite character is provided side by side or instead of the pen tip receiving portion so that the finger can be moved without using a magnetic pen, or a replaceable display window 16 is provided. In addition, it is possible to store a sample card for drawing on the blackboard body 13 in advance so that even a small child can play while easily imitating, so that the spirit of the present invention is deviated. The present invention naturally extends to modifications or substitutions that are not made.

[0013]

[Effect of the invention]

 In the blackboard utilizing the magnet pen according to claim 1, the pen tip receiving portion is moved to the upper side of the drawing board, and the erasing magnet having a larger magnetic force than the magnet of the pen tip is moved to the lower side along the drawing board. The pen tip receiving portion and the erasing magnet are integrally connected via an auxiliary member or the like so as to be movable as described above, so that the pen tip of the drawing magnet pen is placed in the pen tip receiving portion. A part of the handwriting can be erased by moving the drawing pen to, for example, a part of a character or a picture to be erased in a state where the pen is inserted in the pen. As described above, the blackboard is provided with a knob on the upper side of the drawing board and an erasing magnet on the lower side movably along the same drawing board. The knob and the erasing magnet are integrated via an auxiliary member, etc. It is composed of A part of the handwriting can be erased by manipulating the Mami with your fingers and moving it to the part of the character or picture you want to erase, for example. Is played.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a magnetic pen-based blackboard according to the present invention.

FIG. 2 is a cross-sectional view along the line AA.

FIG. 3 is a perspective view showing an auxiliary member.

FIG. 4 is an enlarged cross-sectional view showing a state where the tip of a magnetic pen has moved on the upper surface of the small chamber.

FIG. 5 is an enlarged sectional view showing a state where a ferrite magnet has moved on the lower surface of the small chamber.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hard synthetic resin transparent plate 2 Hard synthetic resin transparent plate 3 Partition 4 Small room 5 Sand iron 6 Opaque liquid 7 Drawing board 9 Hand side recess 10 Front side recess 11 Board 12 Shallow recess 13 Blackboard main body 14 Card slot 15 Card DESCRIPTION OF SYMBOLS 16 Display window 18 Auxiliary member 20 Upper side part 21 Pen tip receiving part 22 Lower side part 23 Circular dish-shaped part 24 Ferrite magnet 25 Moving slit 26 Bar-shaped body 27 Granular magnet 28 Drawing magnet pen 30 Holder part 31 Elastic leg

Claims (2)

[Utility model registration claims] 1. A pen tip receiving part is arranged on the upper side of a drawing board, and an erasing magnet having a magnetic force larger than that of the pen tip is movably arranged on the lower side along the drawing board. And a magnet pen-based blackboard in which an erasing magnet is integrally connected via an auxiliary member or the like in the movable state. 2. A knob portion is disposed on the upper side of the drawing plate, and an erasing magnet is arranged movably along the lower side of the drawing plate, and the knob portion and the erasing magnet are integrally moved via an auxiliary member or the like. A blackboard using a magnetic pen that is connected in a possible state.