KR19990022552U - Scroll type writing board - Google Patents

Abstract

The present invention mainly relates to a blackboard used in school, and more specifically, the front of the blackboard by installing a device that can circulate the flexible recording paper and flexible recording paper, you can write on the flexible recording paper instead of the blackboard, using chalk Instead, it relates to a scroll-type writing board configured to write using a writing instrument such as an aqueous pen or a board pen.

The scroll-type writing board of the present invention made as described above does not use chalk as a writing instrument, but instead can write with a water-based fan or a board fan, and no chalk powder is generated so that the teacher or students are not damaged by the chalk powder. You may not wear it. In addition, the flexible recording paper can be written while moving from side to side or up and down on the front of the support plate, so the entire surface of the flexible recording paper is evenly used for long life, and it is necessary to print various forms such as graph paper, stave paper or manuscript on the flexible recording paper in advance. It can be used conveniently. In particular, the flexible recording paper can be separated from the frame, and can be utilized by installing the rolled paper produced in place, which has the advantage of increasing the learning effect.

Description

Scroll type writing board {Scroll type writing board}

The present invention mainly relates to a blackboard used in school, and more specifically, to a scroll-type writing board configured to write using a writing instrument such as a water-based pen without using chalk by circulating flexible recording paper on the front of the blackboard. will be.

Chalkboards used in almost all schools use chalk. However, it is a well-known problem that chalk powder caused by using such chalk is harmful to a person, and it is a direct factor that can cause bronchial or other respiratory disorders, especially for teachers who use chalk directly. In addition, when the use of the blackboard is old, the surface of the blackboard becomes rough and peeled off, so that the letters cannot be recognized well, and the learning efficiency is deteriorated, and accordingly, there is a problem that the maintenance or the exchange is not possible at all.

The present invention has been made to solve the above problems, by installing a flexible recording paper rolled on the frame of the support plate detachable, can be written using a writing instrument such as an aqueous pen or a board pen on the streamlined recording paper instead of a blackboard The problem caused by chalk powder can be solved. Especially, the flexible recording paper can be written while moving left and right or up and down on the front of the support plate, so that the entire surface of the flexible recording paper can be used evenly, and the frame is longer. The purpose of the present invention is to provide a scroll-type writing board configured to be separated from and used to install a rolled-up scroll in place.

1 is a view schematically showing the overall configuration of a scroll writing board according to an embodiment of the present invention.

Figure 2 is a cross-sectional view showing a portion of the drive unit and the follower of the rewinding writing plate according to an embodiment of the present invention.

Figures 3a and 3b and 3c is a view showing for explaining the principle of installation of the rotating rod to the holder of the rewind-type writing plate according to an embodiment of the present invention.

4 is a view showing a structure of the rotating rod and the principle of winding a flexible recording paper on the rotating rod.

5A and 5B are cross-sectional views and cutaway perspective views showing a first lower holder and a crank member of a rolled writing plate according to an embodiment of the present invention.

Figure 6 is a perspective view of the case provided on both sides of the retractable writing plate according to an embodiment of the present invention.

Figure 7 is a perspective view showing a pull-out screen is provided on one side of the rewind-type writing plate according to an embodiment of the present invention.

8 is an exploded perspective view showing a flexible recording paper support means installed in the rewind-type writing board according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

11: upper frame 13: lower frame

15: support plate 17: motor

19: Drive sprocket 21: Controller

23: Chain 25: First upper holder

27: 1st lower holder 29: 1st upper drive groove

31: First lower drive groove 33: Crank member

35: driven sprocket 37: second upper holder

39: 2nd lower holder 41: 2nd upper drive groove

43: second lower drive groove 45: adjusting handle

47: cover 49: first rotating rod

51: second rotating rod 53: slit

55: flexibility sheet 57: the first case

59: second case 61: support

63: door part 65: hinge

67: dust removal fiber 69: jam jaw

71: pull-out screen 73: push pipe

75,83,113: Spring 77: Pin

79: pressure member 81: lifting tip

82: fixed tip 85: elastic locking jaw

87: head accommodation groove 89: through groove

91: tip 93: guide plate

95: Handle 97: Screen

99: support rod 101: case

103: support protrusion 105: insertion protrusion

107: head 109: insertion protrusion

111: receiving groove 115: bracket

In order to achieve the above object, the present invention is a support plate having an upper frame and a lower frame; A motor installed at one end of the upper frame of the support plate and having a driving sprocket fixed to the driving shaft; A controller for controlling the motor; A first upper holder penetrating the upper frame and being connected to the driving shaft of the motor, and having a first upper driving groove having a predetermined depth at a bottom of the central shaft portion; A first lower holder provided through a lower frame to face the first upper holder, a first lower driving groove having a predetermined depth on an upper surface thereof, and a head accommodation groove provided on a lower surface thereof; A crank member for rotating the first lower holder by inserting and rotating an end portion in the head accommodation groove; A driven sprocket rotatably installed at the other end of the upper frame and connected to the driving sprocket by a chain; A second upper holder penetrating the upper frame and engaging with the rotating shaft of the driven sprocket, and having a second upper driving groove formed at a bottom thereof; A second lower holder facing the second upper holder and rotatably supported by a lower frame, and having a second lower driving groove formed on an upper surface thereof; An adjusting handle for rotating the second lower holder by rotating through the lower frame to be combined with the bottom of the second lower holder; A first rotating rod having both ends inserted into the first upper driving groove and the first lower driving groove and having slits formed in a longitudinal direction; A second rotating rod having both ends inserted into the second upper driving groove and the second lower driving groove to be parallel to the first rotating rod, and having a slit in the longitudinal direction; And a flexible recording paper which is rolled on the outer circumferential surfaces of the first rotary rod and the second rotary rod and linearly moves in front of the support plate according to the rotation of the first rotary rod and the second rotary rod.

In addition, the roll-type writing plate of the present invention includes the first upper holder, the first rotating rod, and the first lower holder therein, and can be opened and closed to enable mounting and detachment of the first rotating rod from the outside, and is supported by the support plate. A first case; Including the second upper holder, the second rotary rod and the second lower holder therein, can be opened and closed to enable the mounting and detachment of the second rotary rod from the outside, further comprising a second case supported on the support plate The cross-sectional shapes of the first case and the second case each take the shape of a semi-circle, and the supporting portion is fixed to the support plate wall, and the door portion functions as a door hinged to one end of the supporting portion to rotate. It is configured to face the outside of the support plate, the dust removal fibers are further provided at the front end of the supporting portion and the door portion corresponding to the opposite side of the hinge portion.

In addition, the upper frame is provided with a plurality of locking jaw, the locking jaw is provided in the lower frame to be symmetrical with the locking jaw, the outer side of the first case or the second case of the support plate, the removable screen is installed on the screen The screen is drawn out from the screen case and is caught to the locking jaw so as to cover the flexible recording paper.

In addition, the roll-type writing board of the present invention is provided with symmetrical portions on the side of the first case and the second case, respectively, and is provided with a push pipe which is elastically supported by elastic means to press the flexible recording paper to the front of the wall of the support plate and adheres thereto. Further provided, the elastic means is respectively installed so that one end is fixed to the upper frame and the lower frame, the upper frame and the lower frame by a pin, one end is connected to the spring and the other end and the end of the push pipe It includes a pressing member connected.

And, at least one end of the end of the first rotary rod and the second rotary rod is provided with an elevating tip which is moved up and down by a spring, and can be stretched in a predetermined length in the longitudinal direction, when the length is reduced the first upper and lower driving grooves and It is inserted into the second upper and lower driving grooves, and after being inserted, it is stretched and mounted again by the elastic force of the spring. A through groove is formed on the side of the head accommodation groove, and the outer circumferential surface of the crank member can be fitted into the through groove. An elastic catching jaw is provided which is elastically supported in the radial direction, and when the crank is inserted into the head receiving groove, the elastic catching jaw is fitted into the through groove so that the crank member is mounted in the head receiving groove.

In addition, the first upper driving groove and the first lower driving groove, the second upper driving groove and the second lower driving groove may have a polygonal or elliptical shape, and end or lifting tips of the first and second rotary bars fitted thereto. It has the same shape and is configured to receive torque when it is fitted. In addition, the flexible recording paper is characterized in that the asteji or vinyl.

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

1 is a perspective view schematically showing the overall configuration of the scroll-type writing board according to an embodiment of the present invention.

As shown, the scroll writing board according to the present embodiment can be used by installing the various components described below on the front of the conventional blackboard, and can also be used to produce a separate support plate having a support frame irrespective of the blackboard. There is also. Therefore, the school already using the blackboard can be used to install the components of the present invention on the existing blackboard, without having to separately produce a support plate.

The roll-type writing board of the present invention is provided with the components described below on the supporting plate 15 provided with the upper frame 11 and the lower frame 13. The support plate 15 has a shape such as a known blackboard, and is provided with horizontal frames on the upper and lower sides thereof, and vertical frames may also be installed on the left and right sides.

The motor 17 is installed in the upper frame 11 of the support plate 15. The motor 17 is operated by an external electric and connected to the controller 21, the on-off and rotational direction or rotational speed is controlled by the controller 21. The motor 17 is installed perpendicularly to the left end of the upper frame 11 so that the drive shaft is downward, the drive sprocket 19 is fixed to the drive shaft. The drive sprocket 19 rotates according to the driving of the motor 17 and transmits rotational force to the driven sprocket 35 using the chain 23.

The first upper holder 25 is installed below the motor 17 with the upper frame 11 interposed therebetween. The first upper holder 25 is axially coupled to the drive shaft of the motor 17 by passing through the upper frame 11 and rotates simultaneously with the rotation of the motor 17. Accordingly, when the motor 17 is driven, the first upper holder 25 also rotates at the same time as the driving sprocket 19. The drive sprocket 19 is a member that transmits power to the driven sprocket 35 through the chain 23 and transmits power to the second upper holder 37 to be described later, the first upper holder 25 is a motor ( It is a member for rotating the first rotating rod 49 connected to the lower portion by being directly connected to the drive shaft of the shaft 17. The first upper holder 25 is supported by the bearing (not shown) on the upper frame 11 and rotates smoothly.

A first upper driving groove (29 of FIG. 2) having a predetermined depth is formed on the bottom surface of the rotation center shaft of the first upper holder 25. The shape of the first upper driving groove 29 takes the shape of a quadrangle so that torque can be transmitted while the lifting tip 81 shown in FIG. 4 is inserted. In addition, as will be described later, the cross-sectional shapes of the first and second upper driving grooves 29 and 41 and the first and second lower driving grooves 31 and 43 used in the writing board according to the present embodiment are elliptical or polygonal. The shape of both ends of the rotating rod also has an ellipse or polygonal shape corresponding to that of the driving grooves 29, 41, 31, and 43, so that torque can be transmitted to the rotating rods 49 and 51 inserted into the grooves. do.

On the other hand, the lower frame 13 is provided with a first lower holder 27 to face the first upper holder 25. The first lower holder 27 is installed to be rotatable by a bearing (not shown) through the lower frame 13, and a first lower driving groove (31 in FIG. 2) having a predetermined depth is formed on an upper surface thereof. At the bottom, a head accommodation groove (87 in Fig. 5b) is provided. The cross-sectional shape of the first lower driving groove 31 is the same as the shape of the first upper driving groove 29 which is installed in the upper frame 11 to face each other.

The head receiving groove 87 provided on the bottom of the first lower holder 27 is a space for accommodating the head 107 of the crank member 33 as a receiving space having a cylindrical shape. In fact, at the center of the bottom surface of the first lower holder 27, an accommodation groove (111 in Fig. 5A) is formed to insert the insertion protrusion 109 of the crank member 33, and is inserted into the head accommodation groove 87. The installed crank member 33 can rotate the first lower holder 27 manually. That is, when the insertion protrusion 109 of the crank member 33 is inserted into the receiving groove 111 of the first lower holder 27 and the crank member 33 is rotated, the first lower holder 27 is moved to the crank member ( Can rotate manually in the direction of rotation 33).

As described above, the head receiving groove 87 is a member that is integrally connected to the bottom rim of the first lower holder 27 to provide a cylindrical space on the bottom of the first lower holder 27, and has two side surfaces. The through groove 89 is provided in the longitudinal direction. The through groove 89 is a groove for receiving the elastic engaging jaw 85 of the crank member 33, which will be described later with reference to FIG. 5.

A first rotating rod 49 is installed between the first upper holder 25 and the first lower holder 27. As will be described later, the first rotary rod 49 and the second rotary rod 51 have the same shape. The first rotary bar 49 is an axis around which the flexible recording paper 55 is rolled around the outer circumferential surface, and at both ends, the guide plate 93, the lifting tip (81 in FIG. 3) and the fixing tip (82 in FIG. 3) are formed. As mentioned above, the first rotary bar 49 is interposed between the first upper holder 25 and the first lower holder 27 to rotate, thereby releasing or winding the flexible recording paper wound on the outer circumferential surface.

Therefore, the rotational force generated from the motor 17 is transmitted to the first rotating rod 49 via the first upper holder 25, and is also transmitted from the first rotating rod 49 to the first lower holder 27. As a result, when the motor 17 is used, the motor 17 rotates the first upper holder 25 so that the first rotating rod 49 is shafted between the first upper holder 25 and the first lower holder 27. When the motor 17 is not used, the crank member 33 may rotate the first lower holder 27 to rotate the first rotating rod 49.

The shape and installation principle of the first rotary bar 49 will be described later with reference to FIGS. 3 and 4.

Meanwhile, the first upper holder 25, the first lower holder 27, and the first rotating rod 49 are included in the first case 57. That is, the first case 57 has the first upper holder 25, the first lower holder 27, and the first rotating rod 49 embedded therein so as not to be seen from the outside, and on the drawing of the supporting plate 15. It is located at the left end. The outer shape of the first case 57 is manufactured in a form that can cause aesthetics, the material may be aluminum, stainless steel, or plastics, of course, other materials may be used.

As shown in FIG. 6, the shape of the first case 57 includes a support part 61 and a door part 63 so as to have a substantially cylindrical shape at the time of coupling, and the support part 61 and the door part are provided. 63 is hinged (65 in Fig. 6) is coupled. That is, the supporting part 61 and the door part 63 have a semicircular cross-sectional shape, respectively, and have a cylindrical shape at the time of joining, and include the first upper and lower holders 25 and 27 and the first rotating rod 49 therein. do. The support 61 is positioned between the front of the support plate 15 and the first upper and lower holders 25 and 27 and the first rotary rod 49 and is coupled to the support plate 15 by a bracket 115. That is, the mounting portion 61 is installed by coupling the fastening means such as bolts or screws to the support plate 15 through the bracket 115.

In addition, as shown in the figure, the base 61 and the door 63 are connected to the hinge 65, but the reason for directing the free end of the door 63 to the inside of the support plate 15 is flexible, as will be described later. This is to remove dust that may be on the surface of the flexible recording paper 55 when the recording paper 55 is released and exits the cases 57 and 59. Since the door part 63 is rotatable with respect to the supporting part 61, the door part 63 includes the first upper and lower holders 25 and 27 and the first rotating rod 49 therein so as to rotate in the direction of arrow a.

On the other hand, the pressing pipe 73 is installed on the side of the first case 57. The push pipe 73 is for bringing the flexible recording paper 55 moving in the direction of the arrow b from the front surface of the support plate 15 into close contact with the front surface of the support plate 15. It is pressed and supported by the support plate 15 side. The spring 75 and the pressing member 79 are respectively installed on the inner opposing surfaces of the upper frame 11 and the lower frame 13 to elastically support the upper end and the lower end of the press pipe 73. As shown in detail in FIG. 8, the push pipe 73 is connected to the pressing member 79 and is rotatable in the direction of the arrow c. Therefore, when the flexible recording paper 55 moves in the direction of arrow b, the push pipe 73 can stably provide a supporting force while rotating in the direction of arrow c by friction with the flexible recording paper 55.

Meanwhile, the driven sprocket 35 installed at the right end of the upper frame 11 is connected to the driving sprocket 19 and the chain 23 to receive the rotational force of the motor 17. The rotating shaft supporting the driven sprocket 35 passes through the upper frame 11 and is shafted with the second upper holder 37 so that the rotational force from the motor 17 is transferred to the second upper holder 37. Delivered.

The second upper holder 37 penetrates the upper frame 11 and is installed to rotate smoothly by a bearing (not shown), and a second upper driving groove (41 in FIG. 2) is formed on a bottom surface thereof. The structure and function of the second upper driving groove 41 is the same as the first upper driving groove (29 in FIG. 2).

A second lower holder 39 is installed in the lower frame 13 so as to face the second upper holder 37. The second lower holder 39 also passes through the lower frame 13 and is rotatable by a bearing (not shown). The second lower driving groove 43 is formed on the upper surface of the second lower holder 39 and has the same shape as the second upper driving groove 41. In addition, an adjustment handle 45 is provided on the bottom of the second lower holder 39. The adjustment handle 45 is a handle that is rotated by the user. When the adjustment handle 45 is rotated, the second lower holder 39 rotates, and thus the second upper holder 37 and the second lower holder 39 are rotated. The rotation angle of the second rotating rod installed between the can be adjusted. The adjustment handle 45 may be installed on the second upper holder 37 side.

The second rotating rod 51 provided between the second upper holder 37 and the second lower holder 39 has the same shape as the first rotating rod 49 and is flexible with the first rotating rod 49. The recording paper 55 is rolled up. Therefore, the rotation of the first rotating rod 49 and the second rotating rod 51 is made in the same direction, the flexible recording paper 55 is moved from the front of the support plate 15 to the left or right according to the rotation direction.

On the other hand, the second case 59 is installed to include the second upper and lower holder and the second rotating rod 51 therein. The second case 59 has a cylindrical shape like the first case 57 and includes a support part 61 and a door part 63. Basically, the shape and function of the second case 59 are the same as those of the first case 57 described above, but the coupling portions of the support 61 and the door 63 are symmetrical with the first case 57. In the second case 59, the hinge 65 is located outside the support plate 15. Therefore, in the first case 57 and the second case 59, the free ends of the door portions face each other. The free end of the door part of the second case 59 is provided with a dust removing fiber like the first case. Therefore, the surface of the flexible recording paper, which is released from the second case 59 and moved to the left in the drawing, is always kept clean.

A pull-out cover plate 71 is installed on the right side of the hinge 65 of the second case 59. The pull-out shielding plate 71 is a shielding plate according to a known principle, and is composed of a case 101 and a screen 97 installed in a state wound in the case 101, and a support rod 99 at the tip of the screen 97. ) Is inserted. The pull-out cover plate 71 configured as described above functions to cover a part of the support plate 15 by pulling the screen 97 to the front side of the support plate 15. This is because the applicant's educational experience often needs to cover a part of the blackboard and the education effect is good. For example, the left side of the support plate is given a problem, the right side is written a best answer, and then the parental answer is made. The marked area may be temporarily covered by the screen 97.

The upper frame 11 and the lower frame 13 are provided with a plurality of locking jaw (69). In the present embodiment, three locking jaws 69 are provided, but of course, more locking jaws may be installed. Therefore, by fitting both ends of the support bar 99 provided at the front end of the screen 97 of the pull-out cover plate 71 to the locking jaw 69, the screen 97 causes a portion of the flexible recording paper 55 to be removed. It can be hidden.

A cover 47 is disposed on the upper frame 11 to cover the motor 17, the driving sprocket 19, the driven sprocket 35, and the chain 23 installed in the upper frame 11. The cover 47 may have a shape of 'c' and may be made of wood, metal, or plastic.

2 is a view showing a part of the coupling structure of the driving unit and the follower of the scroll-type writing plate according to an embodiment of the present invention.

The same reference numerals as the above reference numerals denote the same members having the same function.

As shown, the drive shaft of the motor 17 penetrates through the upper frame 11 and is shafted with the first upper holder 25, so that the first rotating rod 49 into which the first upper holder 25 is fitted is opened. Rotate The first rotating rod 49 is rotated along the rotational direction of the motor 17 to wind or unwind the flexible recording paper 55 to move in the direction of the arrow b. In this figure, the flexible recording paper 55 is wound around the rotating rods 49 and 51. The lower end of the first rotary bar 49 is fitted into the groove 31 of the first lower holder 27 to be coupled and supported. Accordingly, when the motor 17 rotates, the first upper holder 25, the first rotating rod 49, and the first lower holder 27 rotate simultaneously. In addition, as described above, the bottom of the first lower holder 27 is provided with a head receiving groove 87 can be fitted to the head 107 of the crank member 33. Since the crank member 33 may be stored separately from the first lower holder 27, the crank member 33 may be separately stored when the motor 17 is used, and the head accommodation groove when the motor 17 is not used. 87) to be used after installation. If the crank member 33 is inserted into and installed in the head accommodation groove 87, the insertion projection 109 is inserted into the accommodation groove 111, as shown in Fig. 5A, so that the crank member 33 is When rotated in the direction, the first lower holder 27 rotates to rotate the first rotating rod 49 similarly to the motor.

Movement of the follower, which is connected to the motor 17, the first upper and lower holders 25 and 27, and the first rotating rod 49 to receive power, is performed by a chain 23 connected from the driving sprocket 19. The driven sprocket 35 applied with the rotational force by the chain 23 rotates the second upper and lower holders 37 and 39 and the second rotating rod 51. In addition, as described above, an adjustment handle 45 is provided below the second lower holder 39 to penetrate the lower frame 13 to rotate the second lower holder 39 by rotating the adjustment handle 45. Can be rotated. This is provided by the user to adjust the position of the flexible recording paper 55.

3A, 3B, and 3C are diagrams schematically illustrating the mounting principle of the first and second rotary bars installed on the scroll writing plate according to the embodiment of the present invention.

As shown, both ends of the first and second rotary rods 49 and 51 are fixed to be installed between the first and second upper holders 25 and 37 and the first and second lower holders 27 and 39. The tip 82 and the lifting tip 81 are formed. The fixing tip 82 is a protrusion formed at the bottom of the rotating rod in the drawing, the lifting tip 81 is a protrusion provided at the top. The elevating tip 81 is moved up and down in the longitudinal direction of the rotating rod, as a result has the effect that the entire length of the rotating rod is stretched. In order to install the lifting tip 81, one end of the rotating rod forms a groove to a predetermined depth, and a spring 83 is installed inside the groove to allow the spring to support the lifting tip 81. Therefore, the elevating tip 81 is supported by the spring 83 and is capable of stretching in the longitudinal direction of the rotating rods 49 and 51.

On the other hand, the first and second upper holders 25 and 37 and the first and second lower holders 27 and 39 are fixed to each other at a constant distance. In order to sandwich the rotating rods 49 and 51 between these holders, the rotating rods are first brought close to the holder side as shown in FIG. 3A. At this time, it can be seen that the distance between the holder is closer than the length of the rotating rod. Subsequently, as shown in FIG. 3B, the elevating tip 81 is lowered, the rotary rod is sandwiched between the holders, and pushed in the direction of arrow d to complete the installation as shown in FIG. 3C. When the rotary rod is sandwiched between the holders, the elevating tip 81 provided at the upper end of the rotary rod is supported in the direction of arrow f by the elastic force of the spring 83, thereby stably inside the first and second upper driving grooves 29 and 41. It is installed. This lifting tip can be installed at the top and bottom at the same time, of course, not installed only on the upper end of the rotating rod.

4 is a view showing for explaining the principle of installing a flexible recording paper on the rotating rod.

As shown, the upper and lower ends of the first and second rotary rods 49 and 51 applied to the scroll-type writing board according to the present embodiment are provided with a lifting tip 81 and a fixing tip 82, and the body has a length. Slits 53 in the direction are formed. The slit 53 is a thin groove into which the tip portion 91 of the flexible recording paper 55 is inserted, and has a length equal to at least the width of the tip portion 91. The slit 53 passes through the rotating rods 49 and 51 so that the tip of the flexible recording paper 55 inserted into the slit 53 can completely penetrate the rotating rods 49 and 51 and protrude in the opposite direction.

Therefore, when the rotary bar is rotated in the direction of the arrow m with the tip portion 91 of the flexible recording paper 55 inserted into the slit 53 along the g direction, the flexible recording paper 55 is wound on the rotary bar. This is as if the film is first inserted into the camera, and the film tip is wound around the film roller inside the camera. In some embodiments, a plurality of slits 53 may be formed.

Reference numeral 93 denotes a support plate provided to prevent the flexible recording paper 55 wound on the rotating rod from falling down as it is positioned vertically. That is, since the flexible recording paper 55 is positioned vertically while being wound on the rotating rod, the flexible recording paper 55 is always struck downward even when stopped under the influence of gravity.

5A and 5B are diagrams schematically illustrating a configuration of a crank member positioned below the first lower holder of the rolled writing plate according to an embodiment of the present invention.

As shown in the drawing, an accommodation groove 111 and a head accommodation groove 87 are formed on the bottom of the first lower holder 27. The receiving groove 111 is provided to receive the torque in combination with the insertion protrusion 109 provided on the upper portion of the crank member 33, the head receiving groove 87 includes a crank member 33 therein Insertion protrusion 109 is to maintain the state combined with the receiving groove (111). The through hole 89 is formed in the head accommodation groove 87 so as to support the head 107 portion of the crank member 33 therein.

The through-groove 89 is a hole into which the elastic locking jaw 85 is inserted into the outer circumferential surface of the head 107. In this embodiment, two through grooves 89 are formed in the longitudinal direction.

On the other hand, the elastic engaging jaw 85 provided in the head 107 of the crank member 33 is elastically supported in the radial direction of the head 107 by the spring 113. Therefore, the elastic locking jaw 85 is capable of reciprocating in the direction of the arrow n with respect to the head 107. The structure and operation principle of the elastic locking jaw 85 inside the head 107 can be seen from the button of a known automatic umbrella. Reference numeral 95 denotes a handle that a user holds hands.

FIG. 6 is a perspective view illustrating first and second cases installed on a scroll-type writing board according to an embodiment of the present invention. FIG.

Referring to the drawings, it can be seen that the supporting portion 61 and the door portion 63 are coupled by the hinge 65. As described above, since the support portion 61 is fixedly installed on the support plate 15 through the bracket 115, the door portion 63 rotates with respect to the support portion 61 as if it is a door. The holders 25, 27, 37, 39 and the rotating rods 49, 51 are accommodated. In addition, the dust removal fiber 67 is provided at the tip of the free end of the support 61 and the door 63. As described above, the dust removing fiber 67 is for removing dust that may be on the surface of the flexible recording paper 55 drawn out from the cases 57 and 59.

Figure 7 is a view showing in more detail the pull-out cover plate provided on the side of the rewind-type writing plate according to an embodiment of the present invention.

Referring to the drawings, the support bar 99 is installed at the tip of the screen 97 installed inside the case 101. The support rod 99 is caught by a locking jaw (69 in FIG. 1) provided in the upper and lower frames 11 and 13, so that the screen 97 can cover a portion of the flexible recording paper 55. In addition, as described above, the pull-out shielding plate 71 is a shielding plate having a known principle, and has a structure in which the screen 97 is always elastically pulled into the case 101. Therefore, if the support bar 99 is left in the state which pulled out from the latching jaw 69, the screen 97 and the support bar 99 are automatically pulled toward the case 101, and return to the initial position.

8 is a view for explaining the operation and configuration of the push pipe for elastically supporting the flexible recording paper located on the front of the roll-type writing board according to an embodiment of the present invention.

The same reference numerals as the above reference numerals denote the same members having the same function.

As shown, the elastic support means provided to elastically support the pressing pipe 73 toward the support plate 15 is configured to include a spring 75 and the pressing member (79). In addition, the elastic support means are installed to be symmetrical to the upper and lower frames are provided with a total of four.

First, support protrusions 103 are provided on opposite surfaces of the frames 11 and 13, respectively. The support protrusion 103 is connected to one end of the spring 75 to pull the spring 75 in the direction of the arrow r.

The other end of the spring 75, one end of which is connected to the support protrusion 103, is connected to the pressing member 79. The pressing member 79 is a member having a shape in which a central portion is bent, and is installed on the frames 11 and 13 by the pins 77 and is rotatable about the pins 77. In addition, the other end of the pressing member 79 is connected to the end of the push pipe (73). A bearing (not shown) is interposed between the other end of the pressing member 79 and the connecting pipe 73, so that the pressing pipe 73 is free to rotate in the direction of the arrow c with respect to the pressing member 79. As a result, the spring 75 elastically supports the pressing member 79 in the direction of the arrow p, thereby causing the pressure pipe 73 to press the flexible recording paper 55 toward the support plate 15.

The present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. . In particular, it is easy to install and detach the rotating rod winding the flexible recording paper, and if necessary, instead of the flexible recording paper rolls made of conventional trajectory and installed between the upper and lower holders, of course, can also be applied to the writing board. It is also possible to install each component horizontally to vertically move the flexible recording paper.

The scroll-type writing board of the present invention made as described above does not use chalk as a writing instrument, but instead can write with a water-based fan or a board fan, and no chalk powder is generated so that the teacher or students are not damaged by the chalk powder. You may not wear it. In addition, the flexible recording paper can be written while moving from side to side or up and down on the front of the support plate, so the entire surface of the flexible recording paper is evenly used for long life, and it is necessary to print various forms such as graph paper, stave paper or manuscript on the flexible recording paper in advance. It can be used conveniently. In particular, the flexible recording paper can be separated from the frame, and can be utilized by installing the rolled paper produced on the place, thereby increasing the learning effect.

Claims (9)

A support plate 15 having an upper frame 11 and a lower frame 13; A motor 17 installed at one end of the upper frame 11 of the support plate 15 and having a drive sprocket 19 fixed to the drive shaft; A controller 21 for controlling the motor 17; A first upper holder 25 formed with a first upper driving groove 29 having a predetermined depth at a bottom of the central shaft portion through a shaft connected to the driving shaft of the motor 17 through the upper frame 11; It is installed through the lower frame 13 to face the first upper holder 25, the first lower drive groove 31 having a predetermined depth is formed on the upper surface, the head receiving groove 87 is provided on the bottom A first lower holder 27; A crank member (33) for rotating the first lower holder (27) by inserting and rotating an end portion in the head accommodation groove (87); A driven sprocket 35 installed rotatably at the other end of the upper frame 11 and connected to the driving sprocket 19 by a chain 23; A second upper holder 37 which penetrates the upper frame 11 and engages with the rotating shaft of the driven sprocket 35 and has a second upper driving groove 41 formed on a bottom thereof; A second lower holder (39) opposed to the second upper holder (37) and rotatably supported by the lower frame (13), and having a second lower driving groove (43) formed on an upper surface thereof; An adjusting handle 45 that rotates the second lower holder 39 by rotating through the lower frame 13 in combination with the bottom surface of the second lower holder 39; First rotating rods 49 having both ends inserted into the first upper driving grooves 29 and the first lower driving grooves 31 and having slits 53 formed in the longitudinal direction; Both ends are inserted into the second upper driving groove 41 and the second lower driving groove 43 to form a slit 53 in the longitudinal direction in parallel with the first rotating rod 49 and the second rotating rod 51. ; And a flexible recording paper 55 which is rolled on the outer circumferential surfaces of the first rotating rod 49 and the second rotating rod 51 and linearly moves on the front surface of the supporting plate 15 according to the rotation of the first rotating rod and the second rotating rod. Scroll style writing board. According to claim 1, wherein the first upper holder 25, the first rotating rod 49 and the first lower holder 27 is included in the inside and the opening and closing to enable the mounting and detachment of the first rotating rod 49 from the outside. A first case 57 supported by the support plate 15; The second upper holder 37, the second rotating rod 51 and the second lower holder 39 is included therein, and can be opened and closed to enable the mounting and detachment of the second rotating rod 51 from the outside, the support plate A scroll writing board further comprising a second case (59) supported by (15). The cross-sectional shape of the first case 57 and the second case 59 is in the shape of a semicircle, respectively, and the supporting portion 61 is fixed to the wall of the supporting plate 15 and the door portion 63. ) Is functioning as a door that rotates by hinged to one end of the support portion, the hinge portion is configured to face the outer side of the support plate, the dust removal fiber at the end of the support portion and the door portion corresponding to the opposite side of the hinge portion Scroll writing board, characterized in that the further provided (67). According to claim 2, The upper frame 11 is provided with a plurality of locking jaw 69, the locking jaw 69 is also provided on the lower frame 13 to be symmetrical with the locking jaw 69, the support plate On the outer side of the first case 57 or the second case 59 of (15), a pull-out screen 71 is provided so that the screen 97 of the screen is pulled out of the case 101 and the locking jaw 69 Scroll writing board, characterized in that configured to cover the flexible recording paper (55). 3. The lateral side of the first case 57 and the second case 59 are symmetrically installed, and are elastically supported by elastic means to move the flexible recording paper 55 to the front of the wall of the support plate 15. A press pipe 73 is pressed to closely contact with the elastic member, and the elastic means includes a spring 75 having one end fixed to the upper frame 11 and the lower frame 13, and the upper frame 11 and the lower frame 13. Retractable, characterized in that it comprises a pressing member (79) connected to the spring (75) and the other end is connected to the end of the push pipe (73). Writing board. According to claim 1, At least one end of the end of the first rotating rod (49) and the second rotating rod (51) is provided with a lifting tip 81 for lifting up and down by a spring (83), constant in the longitudinal direction Since the length is stretchable, it is inserted into the first upper and lower driving grooves 29 and 31 and the second upper and lower driving grooves 41 and 43 when the length is reduced, and after being inserted, it is extended and mounted again by the elastic force of the spring 83. Scroll type writing board characterized in that it is made. According to claim 1, wherein the through hole (89) is formed on the side of the head receiving groove (87), the outer peripheral surface of the crank member 33 is elastically elastically supported in the radial direction so that it can be fitted into the through groove (89) When the locking jaw 85 is provided, and the crank member 33 is inserted into the head accommodation groove 87, the elastic locking jaw 85 is fitted into the through groove 89, and the crank member 33 is inserted into the head accommodation groove 87. Rewind type writing board characterized in that the mounting). The method of claim 6, wherein the first upper driving groove 29 and the first lower driving groove 31, the second upper driving groove 41 and the second lower driving groove 43 has a polygonal or elliptical shape. The end of the first rotary rod 49 and the second rotary rod (51) to be fitted thereto, or the lifting tip also has the same shape, it is configured to receive the torque when fitted, rewinding writing plate, characterized in that configured. The rolled writing plate according to claim 1, wherein the flexible recording paper is made of asteji and vinyl.