JP3010741U - Blackboard sheet refill - Google Patents

Abstract

(57) [Summary] [Purpose] When sticking this blackboard sheet to a blackboard,
An object of the present invention is to provide a refilling tool for a blackboard sheet that is easy to work and can be reliably performed by a very small number of people. [Structure] A reattachment tool for a blackboard sheet used to stick the blackboard sheet 40 wound in a tubular shape onto the surface of the blackboard 30 while being unrolled, and is composed of a short cylinder having a flange 12 at the base end. The pad 10 is detachably fitted and fixed to both ends of the cylinder of the sheet 40, and the bottom surface is removably placed on the upper surface of the chalk receiver 31 of the blackboard 30 and the side surface 24 is slid along the blackboard 30 surface. A sliding cylinder part 21 that can move freely and a bearing cylinder part that is formed on the upper surface of the sliding base part and that rotatably bears the blackboard sheet 40 with the pad by being removably fitted into the short cylinder part 11 of the pad 10. A combination with a guide plate 20 composed of 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a refilling tool for a blackboard sheet used for mounting a blackboard sheet used for refilling a blackboard on the surface of the blackboard.

[0002]

[Prior art]

 Blackboards used in schools and other places are constructed, for example, by sticking a blackboard paint on the front side to a plywood board, etc. , The chalk will not ride well, so you have to replace the entire blackboard with a new one or repair the surface of the blackboard. As one of the methods for repairing the surface of the blackboard, conventionally, a blackboard-attached board is prepared by cutting a blackboard-painted iron plate, enamel plate, or a veneer-lined backing into the size of the blackboard. Then, a method was adopted in which this board was pasted and pasted onto the surface of the existing blackboard to form a new blackboard surface.

[0003]

[Problems to be solved by the device]

 However, in the conventional method of pasting a board cut into the size of the above blackboard onto the surface of an existing blackboard, the board is so large that it can be bulky and carried by only a few people. Moreover, since the board is thin compared to the area, there was a drawback that the board was twisted and distorted while carrying it. Furthermore, when sticking the boards to the surface of the blackboard, it is necessary to stick a large area of the board all at once, which makes it difficult to stick the boards and requires several workers.

Therefore, the present invention solves the above-mentioned drawbacks of the prior art and adopts a new black sheet wound in a cylindrical shape as a surface member of a blackboard, and this blackboard sheet is applied to a blackboard. It is an object of the present invention to provide a reattachment tool for a blackboard sheet, which can be easily done and can be reliably performed by a very small number of people.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the blackboard sheet refilling device of the present invention is a blackboard sheet refilling device used for sticking a blackboard sheet wound in a tubular shape onto the surface of a blackboard while unrolling it. A pad consisting of a short cylinder having a flange at the base end, which is detachably fitted and fixed to both ends of the cylinder for the blackboard sheet, and a bottom surface which is detachably mounted on the upper surface of the chalk receiver of the blackboard. The sliding board part that can slide freely along the blackboard surface and the upper surface of the sliding base part that is detachably fitted into the short tube part of the pad allows the blackboard sheet with the pad to rotate. The first feature is that it is configured to be combined with a guide plate composed of a bearing tubular portion for bearings. Further, in addition to the first feature, the blackboard sheet relining device of the present invention has a second feature in that the bearing cylinder portion itself is rotatably erected on the sliding base portion via the bearing. There is. In addition to the first or second feature described above, the blackboard sheet relining device of the present invention has a third feature in that it has a linear portion and a curved corner portion on the side circumference of the sliding base portion. There is.

[0006]

[Action]

 According to the first feature described above, when a blackboard sheet made of a magnetic sheet or the like is attached to the surface of the blackboard, first, the pad, which is a short cylinder with a flange, is rolled into a cylinder with the short cylinder portion. Fit it into the tube holes at both ends of the blackboard sheet, at least the end where it will be fitted with the guide plate. Then, the tubular blackboard sheet with the fitted pads is laid vertically, and the bearing tubular portion of the guide plate is fitted with the pad at the lower end. Then, place the cylindrical blackboard sheet fitted with the guide plate on the chalk receiving surface of the blackboard with the sliding base part of the guide plate, and unwind the rolled state of the cylindrical blackboard sheet little by little from the end. In this way, the sliding base portion is slid from one end side to the other end side of the blackboard while being fed out. The guide plate placed on the chalk receiver can be moved while touching the surface of the blackboard on the side of the sliding base part, so that the tubular blackboard sheet can be moved smoothly from one end to the other along the blackboard while standing upright. Can be done. The cylindrical black plate sheet with a pad fitted in the bearing tube portion of the guide plate is rotatable with respect to the bearing tube portion, so that the blackboard sheet is sequentially attached to the blackboard surface from its end. You can send them out little by little. As described above, according to the present invention, by attaching the pad and the guide plate to the cylindrical blackboard sheet, the blackboard sheet can be easily and smoothly operated by a very small number of workers. You can stick the blackboard sheet to the blackboard surface while moving to.

According to the second feature, in addition to the action of the first feature, the bearing cylinder portion itself is rotatably erected on the sliding base portion via the bearing. The unwinding of the cylindrical blackboard sheet can be performed more smoothly. Further, according to the third feature, in addition to the action of the first or second feature, the side surface of the sliding base portion has the straight portion and the curved corner portion, so that the curved blackboard or the middle portion When replacing a blackboard that seems to have been slightly bent with, slide the curved corners of the side of the sliding base while applying it to the blackboard, and slide the blackboard sheet smoothly and surely. You can go along along with.

[0008]

【Example】

 FIG. 1 is a plan view and a front view of a pad of a refill according to an embodiment of the present invention, and FIG. 2 is a plan view and a front of a guide plate of a refill according to the embodiment of the present invention. FIG. 3 is a diagram for explaining an example of use of the refill device according to the embodiment of the present invention. FIG. 4 is a view for explaining an example of use of the refill device according to the embodiment of the present invention. 5 and 6 are views showing examples of use of the guide plate of the refilling tool.

In FIG. 1, the pad 10 of the refilling tool comprises a short tubular portion 11 and a flange 12 provided at the base end thereof, and the upper end of the short tubular portion 11 is slightly bent inward inward. . This makes it easier for the blackboard sheet 40 described later to enter the cylinder. At the same time, it also serves as a stopper guide for inserting the bearing cylinder portion 22 of the guide plate 20 described later. Further, ribs 13 are provided in the longitudinal direction on the outer periphery of the short tubular portion 11 so that the ribs 13 are tapered so that the protruding amount increases as it goes downward. On the other hand, a plurality of small projections 14 for forming a gap are provided on the bottom surface of the flange 12 at regular intervals in the circumferential direction. The small protrusions 14 prevent the slippage failure caused by the bottom surface of the flange 12 coming into front contact with a guide plate 20 described later. The pad 10 is preferably made of a slippery resin such as Teflon, but the material is not limited to this and other materials may be used.

In FIG. 2, the guide plate 20 has a sliding base portion 21 as a base, and a bearing cylinder portion 22 is provided on the upper surface thereof. Further, on the upper surface of the sliding base portion 21, there is provided a tacking portion 23 for sliding the sliding base portion 21 on the choke receiver 31 of the blackboard 30. The bottom surface (rear surface) of the sliding base portion 21 is configured to be flat so that it can slide smoothly on a chalk receiver 31 of a blackboard 30, which will be described later. On the other hand, the side surface 24 of the sliding base portion 21 is provided on its side circumference with a straight portion 24a and a curved corner portion 24b having a different radius of curvature. The bearing tube portion 22 is formed of a short tube standing on the upper surface of the sliding base portion 21, and its height is approximately the same as the length of the tube of the short tube portion 11 of the pad 10, and the bearing tube portion 22 has The outer diameter is slightly smaller than the inner diameter of the short tube portion 11 of the pad 10. The position of the bearing tubular portion 22 is set to be a certain distance from the side surface 24 of the sliding base portion 21 to be abutted against the blackboard 30 and to be slid. The cylindrical black sheet 40 is smoothly unrolled along the surface of the blackboard 30. The bearing tube portion 22 may be rotatably erected on the sliding base portion 21 via a bearing. By doing so, the unwinding of the cylindrical blackboard sheet 40 described later can be further smoothed. The guide plate 20 is also preferably made of a slippery resin such as Teflon, but is not limited to this and may be made of another material.

Next, with reference to FIGS. 3 to 6, an example of using the reattachment device for a blackboard sheet according to the embodiment will be described. As shown in FIGS. 3 and 4, first, the pad 10 is fitted with the short tube portion 11 thereof into the tube holes at both ends of the tube of the blackboard sheet 40 wound in a tube shape. The pad 10 is fixed to both ends of the blackboard sheet 40 by means of tapered ribs 13 provided on the outer periphery thereof. Next, in order that the unwinding end 41 of the blackboard sheet 40 is unwound along the blackboard 30, the tubular blackboard sheet 40 is vertically or vertically oriented, that is, the lower end portion The bearing tube portion 22 of the guide plate 20 is fitted to the pad 10. Then, the tubular blackboard sheet 40 fitted with the guide plate 20 is placed on the upper surface of the black plate chalk receiver 31 with the sliding base portion 21 of the guide plate 20, and the tubular blackboard sheet 40 is wound. While sliding out the state little by little from the end, and sliding the slide base part 21 from one end side to the other end side of the blackboard 30 while abutting the side surface 24 of the sliding base part 21 against the black plate 30 as a guide. Go. The blackboard 30 is removed from the pressing edge 32 in advance, the blackboard sheet 40 is attached, and then the blackboard sheet 40 is attached again from above. As a result, the peripheral edge of the blackboard sheet 40 attached to the front surface of the blackboard 30 is securely fixed by the pressing edge 32. The blackboard sheet 40 is composed of, for example, a magnetic rubber sheet in which a magnetic substance is dispersed and mixed on the back side, aluminum or another metal film is laminated on the upper surface of the magnetic rubber sheet, and the blackboard is formed on the upper surface of the metal film. It can be constructed by laminating paints for use. When the magnetic rubber sheet is made of a magnetic material, it can be easily magnetically adhered and fixed to the surface of a current black plate made of a ferromagnetic material such as iron without using an adhesive or the like. Further, the magnetic rubber sheet is made of rubber so that it can have flexibility such that it can be wound into a tubular shape. Further, the metal film as a core can impart appropriate strength to the blackboard sheet 40. Of course, the blackboard sheet 40 does not have to be magnetically adhered and fixed to the surface of the blackboard, and may be attached using an adhesive.

FIG. 5 shows how to use the guide plate 20 when the blackboard 30 is an ordinary flat plate. That is, in this case, the linear base 24a of the side surface 24 of the sliding base 21 of the guide plate 20 is used to contact and slide on the blackboard, and at the end which is the left end in the figure, the sliding base 21 is the blackboard. In order to avoid a frame member or the like on the outside of 30, the sliding base portion 21 is rotated so that the short side of the sliding base portion 21 contacts the blackboard 30. FIG. 6 shows how to use the guide plate 20 when the blackboard 30 is curved or bent halfway. That is, in this case, by using the curved corner portion 24b of the side surface 24 of the sliding base portion 21 of the guide plate 20, it is possible to prevent the gap between the surface of the blackboard 30 and the blackboard sheet 40 from increasing. be able to.

[0013]

[Effect of device]

 According to the refitting device for a blackboard sheet according to claim 1, the present invention comprises a short tube having a flange at the base end, and is detachably fitted to both ends of the blackboard sheet tube. The pad to be fixed together, the bottom surface on the chalk receiving surface of the blackboard that is detachably mounted on the upper surface, and the side surface that is slidably movable along the blackboard surface and the upper surface of the pad. Since it is combined with a guide plate consisting of a bearing tube part that rotatably bearings the blackboard sheet with the pad by detachably fitting it into the short tube part, By attaching the pad and the guide plate, it is possible for a small number of workers to attach the blackboard sheet to the blackboard surface securely and very easily. According to the blackboard sheet relining tool of the second aspect, in addition to the effect of the configuration described in the first aspect, the tubular blackboard sheet can be unwound more smoothly. Further, according to the relining tool for a blackboard sheet of claim 3, in addition to the effect of the configuration of claim 1 or 2, a straight portion and a curved corner portion are provided on the side circumference of the sliding base portion. Therefore, even if a curved blackboard or a blackboard that is slightly bent in the middle is replaced, it can be done smoothly by applying the curved corners of the side of the sliding base while applying it to the blackboard. , You can surely stick the blackboard sheet along the surface of the blackboard.

[Brief description of drawings]

FIG. 1 is a plan view and a front view of a pad of a re-fitting device according to an embodiment of the present invention.

FIG. 2 is a plan view and a front view of a guide plate of the re-fitting device according to the embodiment of the present invention.

FIG. 3 is a view for explaining an example of use of the refill device according to the embodiment of the present invention.

FIG. 4 is a diagram for explaining an example of use of the refill device according to the embodiment of the present invention.

FIG. 5 is a view showing an example of using the guide plate of the re-fitting tool according to the embodiment of the present invention.

FIG. 6 is a diagram showing an example of use of a guide plate of the re-fitting device according to the embodiment of the present invention.

[Explanation of sign]

 10 Pad 11 Short tube part 12 Flange 20 Guide plate 21 Sliding base part 22 Bearing tube part 24a Straight part 24b Curved corner part 30 Blackboard 31 Chalk receiver 40 Blackboard sheet

Claims (3)

[Scope of utility model registration request] 1. A reattachment device for a blackboard sheet, which is used to attach a blackboard sheet wound in a tubular shape to the surface of a blackboard while unrolling the blackboard sheet, which comprises a short cylinder having a flange at the base end. A pad that is detachably fitted and fixed to both ends of the sheet cylinder, and a slide that is removably placed on the chalk receiving surface of the blackboard on the bottom surface and is slidably movable along the blackboard surface on the side surface. From a combination with a moving base portion and a guide plate formed of a bearing tubular portion that is rotatably supported on the blackboard sheet with the pad by being removably fitted into the short tubular portion of the pad formed on the upper surface thereof. A refill device for blackboard sheets, which is characterized by: 2. The relining tool for a blackboard sheet according to claim 1, wherein the bearing tube portion itself is rotatably erected on the sliding base portion via a bearing. 3. The relining tool for a blackboard sheet according to claim 1, wherein the side surface of the sliding base portion has a straight line portion and a curved corner portion.