JP7038454B1 - Paper tubes, frames, partitions, and paper tube complexes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame body for supporting a plate body by inserting the plate body into a paper tube. SOLUTION: The frame body according to the present disclosure includes a plurality of paper tubes and a joint for connecting a plurality of paper tubes so that the plurality of paper tubes form continuous plurality of sides of a polygon. There is. Each of at least two of the plurality of paper tubes has a slit extending along the axis and penetrating the wall body in and out. The frame further comprises a plate that is supported by at least two paper tubes by being inserted into at least two paper tubes so that the ends penetrate the slits of each of the at least two paper tubes. .. [Selection diagram] Fig. 4

Description

The present invention relates to a paper tube, a frame body using a paper tube, a partition using a paper tube, and a paper tube composite.

A "paper tube" is a tube made of paper, which is called "rolling", "wrapping", or "supporting" toilet paper cores, gum tape cores, certificate storage cylinders, cardboard pallets, etc. There are various uses centered on the three functions (see Non-Patent Documents 1 and 2). Since the paper tube is made of paper, it is lightweight, can be returned to the soil after disposal, and has the advantage of being environmentally friendly.

Conventionally, as disclosed in, for example, Patent Documents 1 and 2, there are known assemblies such as shelves and racks using paper tubes for columns, cross beams and the like. In order to place a plate such as a top plate or a shelf in such an assembly, it is necessary to place the plate on a support, sandwich it between the upper and lower columns, or place it on a cross beam. It was customary.

Japanese Unexamined Patent Publication No. 09-168435 Jitsuzensho 60-134908 Gazette

Nihonshikogyo Co., Ltd. web page "Knowledge of paper tubes" (https://www.nskg.co.jp/product/tube_chisiki.html) Japan Paper Tube Industry Co., Ltd. web page "About Paper Tube" (http://n-shikan.co.jp/paper-core/)

The inventor of the present application thinks that if the plate body can be inserted into the paper tube itself used for the assembly, the aesthetic appearance of the assembly will be improved and the plate body will be stably supported. I arrived. One aspect of the present invention has been made based on the above idea in view of the above problems, and an object of the present invention is to provide a paper tube into which a plate body can be inserted. Another aspect of the present invention is to provide a frame body that supports the plate body by inserting the plate body into a paper tube. Yet another aspect of the present invention is to use a paper tube as a support and to provide a partition that divides the space around the support into four regions by inserting a plate into the paper tube. Yet another aspect of the present invention is to provide a paper tube composite into which a plate can be inserted into a paper tube.

In order to achieve the above object, the first aspect of the present invention is a paper tube, which extends along the axis with at least one of both ends along the axis and is a wall body. Has a slit that penetrates inside and outside.

According to this configuration, the plate body can be inserted into the paper tube so as to penetrate the slit. Since there is no slit in at least one of both ends along the axis of the paper tube, the strength and shape retention of the paper tube are ensured.

The second aspect of the present invention is the paper tube according to the first aspect, in which the slit extends along the axis, leaving both ends.
According to this configuration, since there are no slits at both ends along the axis of the paper tube, the strength and shape retention of the paper tube are further enhanced.

The third aspect of the present invention is the paper tube according to the first aspect, in which the slit extends along the axis except for one end of both ends, and is axisymmetric to each other. It includes two first slits and two second slits that extend along the axis and are axisymmetric to each other, leaving the other end of the ends. The two first slits and the two second slits have different positions in the paper tube in the circumferential direction.

According to this configuration, the first plate body inserted into the paper tube and arranged so as to penetrate the two first slits and the first plate body inserted into the paper tube so as to penetrate the two second slits are arranged. The second plate body can be supported by the paper tube so as to intersect each other inside the paper tube.

The fourth aspect of the present invention is a frame body, wherein the plurality of paper tubes and the plurality of paper tubes form a plurality of continuous sides of a polygon. It has a joint to connect. Each of at least two of the plurality of paper tubes is a paper tube according to the first or second aspect. The frame is a plate body supported by the at least two paper tubes by being inserted into the at least two paper tubes so that the end penetrates the slits of each of the at least two paper tubes. , Further prepared.

According to this configuration, a paper tube is used for the beam portion of the frame body, and a frame body that supports the plate body by inserting it into the paper tube is realized. Such a frame can be used as a component of various assemblies as well as racks and shelves.

The fifth aspect of the present invention is a frame body, in which the plurality of paper tubes and the plurality of paper tubes form a plurality of continuous sides of a polygon. It has a joint to connect. Each of at least two of the plurality of paper tubes has a slit extending along the axis and penetrating the wall body in and out. The frame is a plate body supported by the at least two paper tubes by being inserted into the at least two paper tubes so that the end penetrates the slits of each of the at least two paper tubes. , Further prepared.

According to this configuration, a paper tube is used for the beam portion of the frame body, and a frame body that supports the plate body by inserting it into the paper tube is realized. Such a frame can be used as a component of various assemblies as well as racks and shelves. In the present configuration, the paper tube is not limited to the paper tube according to the first or second aspect, and it is sufficient that the paper tube has a slit extending along the axis, for example, the slit extends from one end to the other end along the axis. It may be a paper tube having a slit, or a paper tube having a slit extending along the axis only in the central portion.

The sixth aspect of the present invention is a frame according to the fourth or fifth aspect, which is arranged at both ends of at least two of the plurality of paper tubes, and is provided at both ends. It is further provided with another paper tube that surrounds both ends so as to be in contact with each other.

According to this configuration, the paper tube having the slit is reinforced by another paper tube arranged at both ends thereof.

The seventh aspect of the present invention is a partition, which divides the space around the support column into four regions by being supported by the support column so as to intersect with the paper tube used as the support column. It is provided with one partition plate and a second partition plate. The paper tube is a paper tube according to the third aspect. The paper tube has a posture in which one end thereof is an upper end portion and the other end portion is a lower end portion. The first partition plate is inserted into the paper tube so as to penetrate the two first slits. The second partition plate is inserted into the paper tube so as to penetrate the two second slits. The first partition plate has a third slit extending from the upper end along the axis of the paper tube. The second partition plate has a fourth slit extending from the lower end along the axis of the paper tube. In the first partition plate and the second partition plate, the second partition plate penetrates the third slit and the first partition plate penetrates the fourth slit, whereby the first partition plate and the second partition plate penetrate each other inside the paper tube. Crossing without interference.

According to this configuration, a partition that divides the space around the column into four areas is realized.

The eighth aspect of the present invention is the partition according to the seventh aspect, and the first partition plate and the second partition plate are made of paper.
According to this configuration, a partition in which both the columns and the partition plate are made of paper is realized.

The ninth aspect of the present invention is a paper tube composite, which comprises a first paper tube and a second paper tube. The first paper tube has a slit, which extends from one end along the axis to the other end along the axis and penetrates the wall body inward and outward. The second paper tube is arranged in a part of the first paper tube along the axis, and surrounds the part so as to be in contact with the part.
According to this configuration, the plate body can be inserted into the first paper tube so as to penetrate the slit. Further, although the slit of the first paper tube extends from one end to the other end, the first paper tube is reinforced by the second paper tube.

As described above, according to one aspect of the present invention, a paper tube into which a plate body can be inserted is realized. According to another aspect of the present invention, a frame body that supports the plate body is realized by inserting the plate body into the paper tube. According to still another aspect of the present invention, by using a paper tube as a support and inserting a plate into the paper tube, a partition that divides the space around the support into four regions is realized. According to still another aspect of the present invention, a paper tube composite capable of inserting a plate into a paper tube is realized.

It is a perspective view which illustrates the structure of the paper tube by one Embodiment of this invention. It is a perspective view which illustrates the structure of the paper tube by another embodiment of this invention. It is a figure which illustrates the structure of the paper tube by still another Embodiment of this invention, (a) is a perspective view, (b) is a side view. It is a top view which illustrates the structure of the frame body by one Embodiment of this invention. It is sectional drawing of the corner part of the frame body exemplified in FIG. It is a top view which illustrates the structure of the frame body by another embodiment of this invention. It is a photograph exemplifying a prototype of an assembly including the frame body exemplified in FIG. 4 as a component. It is a photograph exemplifying another prototype of an assembly including the frame body exemplified in FIG. 4 as a component. It is a photograph illustrating still another prototype of the assembly including the frame body exemplified in FIG. 4 as a component. FIG. 3 is a front view illustrating a set of partition plates constituting a partition using the paper tube illustrated in FIG. 3, and (a) and (b) exemplify one and the other of the set of partition plates, respectively. is doing. FIG. 3 is a perspective view illustrating a partition using a paper tube exemplified in FIG. 3 and a set of partition plates exemplified in FIG. 10. 4 is a perspective view illustrating the paper tubes 10 and 15 used for the frame body 104 exemplified in FIGS. 4 and 5, and (a) illustrates a paper tube complex in which the paper tube 10 and the paper tube 15 are combined. , (B) exemplify the paper tube 15.

FIG. 1 is a perspective view illustrating the configuration of a paper tube according to an embodiment of the present invention. The paper tube 101 has a slit 3 formed in the tubular wall body 1. The slit 3 extends along the shaft 5 except for one of both ends along the shaft 5 (the right end in the figure), and penetrates the wall 1 inward and outward. In the illustrated example, the shape of the paper tube 101 is a round cylinder. The following embodiments also show an example in which the shape of the paper tube is a round cylinder, but the shape of the paper tube is not limited to the round cylinder in the present invention.

Since the paper tube 101 is configured in this way, it is possible to insert the plate body (not shown) into the paper tube 101 so as to penetrate the slit 3. Since there is no slit 3 in one of both ends of the paper tube 101 along the axis 5, the strength and shape retention of the paper tube 101 are ensured.

FIG. 2 is a perspective view illustrating the configuration of a paper tube according to another embodiment of the present invention. In the paper tube 102, the slit 3 formed in the wall body 1 extends along the shaft 5, leaving both both ends along the shaft 5 (both the left end and the right end in the figure). Also in the paper tube 102, the plate body (not shown) can be inserted into the paper tube 102 so as to penetrate the slit 3. Since the paper tube 102 does not have slits 3 at both ends along the shaft 5, the strength and shape retention of the paper tube 102 are further enhanced.

3A and 3B are views illustrating the configuration of a paper tube according to still another embodiment of the present invention, where FIG. 3A is a perspective view and FIG. 3B is a side view. In this paper tube 103, two slits 3A and two slits 3B are formed in the wall body 1. The two slits 3A extend along the axis 5, leaving one end (right end in the figure) of both ends along the axis 5, and are axisymmetric to each other with respect to the axis 5. The two slits 3B extend along the axis 5 and are axisymmetric to each other, leaving the other end (left end in the figure) of both ends along the axis 5.

The positions of the two slits 3A and the two slits 3B in the circumferential direction of the paper tube 101 are different from each other. That is, the radial axis 7A passing through the circumferential center of the two slits 3A and the radial axis 7B passing through the circumferential center of the two slits 3B intersect each other. In the illustrated example, the axis 7A and the axis 7B are orthogonal to each other.

The paper tube 103 configured in this way can be used as a support that supports plates (not shown) that intersect each other at the intersection. That is, a plate body inserted into the paper tube 103 so as to penetrate the two slits 3A and another plate body inserted and arranged into the paper tube 103 so as to penetrate the two slits 3B. , It becomes possible to support by the paper tube 103 so as to intersect each other inside the paper tube 103.

FIG. 4 is a plan view illustrating the configuration of the frame according to the embodiment of the present invention. Further, FIG. 5 is a cross-sectional view of a corner portion of the frame body exemplified in FIG. The frame body 104 of the illustrated example has four paper tubes 10 of two types, long and short. The four paper tubes 10 are connected by four joints 11 so as to form four consecutive sides of a quadrangle. Further, the plate body 13 is supported by the four paper tubes 10.

The paper tube 10 may be either the paper tube 101 exemplified in FIG. 1 or the paper tube 102 exemplified in FIG. 2. Further, in the paper tube 10, the slit 3 may extend from one end to the other end without leaving any of both ends along the shaft 5. 4 and 5 illustrate this form as a paper tube 10. Further, in the paper tube 10, the slit 3 may extend along the shaft 5 only at the central portion along the shaft 5. Generally, it is sufficient that the slit 3 of the paper tube 10 extends along the shaft 5.

The slits 3 of the four paper tubes 10 are oriented so as to face the inside of the quadrangle formed by the four paper tubes 10. The end of the plate 13 penetrates the slits 3 of the four paper tubes 10 and reaches the inside of the four paper tubes 10. In this way, the plate body 13 is supported by the four paper tubes 10 by being inserted into the four paper tubes 10.
The width of the slit 3 is set to be the same as the thickness of the plate body 13, for example. Alternatively, the width of the slit 3 may be set smaller than the thickness of the plate body 13, and the end portion of the plate body 13 may be pushed into the slit 3 so that the plate body 13 is fitted into the paper tube 10. As a result, the plate body 13 is stably supported by the paper tube 10. Alternatively, the width of the slit 3 may be set to be larger than the thickness of the plate 13, and the plate 13 may be supported by the paper tube 10 by inserting the end portion of the plate 13 into the slit 3 with play. In the present disclosure, "inserted" is intended to include any form.

Another paper tube 15 is arranged at both ends of each of the four paper tubes 10. The paper tube 15 has a larger diameter than the paper tube 10 and is arranged so as to be in contact with the outer peripheral surface of the paper tube 10. The paper tube 15 functions as a reinforcing body for reinforcing the paper tube 10. When the paper tube 10 is a paper tube extending from one end to the other end without leaving any of both ends along the shaft 5, as shown in the illustrated example, the paper tube 10 The paper tube 15 that reinforces the above is particularly useful.

In the example shown in the cross-sectional view of FIG. 5, the joint 11 has a cylindrical protrusion 19 protruding from the main body 17 in two directions orthogonal to each other. By fitting the protrusion 19 into the inner cavity of the paper tube 10, the paper tube 10 and the joint 11 are connected to each other. The paper tube 10 and the protruding portion 19 may be fixed by an adhesive. Similarly, the paper tube 15 and the paper tube 10 may be fixed by an adhesive. The joint 11 is made of, for example, a synthetic resin.

The frame body 104 can be used alone, but it can also be used as a component of an assembly such as a rack. In order to use the frame body 104 as a component of the assembly, it is desirable that the paper tube 10 constituting the frame body 104 has a certain rigidity. For example, it is desirable that the paper tube 10 has a thickness of 1.5 mm or more and an inner diameter of 15 mm or more. Further, in order to enhance the usefulness of the frame body 104, it is desirable that the length of the paper tube 10 is 90 mm or more.

FIG. 6 is a plan view illustrating the configuration of the frame according to another embodiment of the present invention. The frame 105 of the illustrated example has three paper tubes 10 of two types, long and short, and two paper tubes 20 having the same length. A total of five paper tubes 10 and 20 are connected by four joints 11 so as to form five consecutive sides of a hexagon. Slits 3 (not shown) are formed in the three paper tubes 10. The plate 13 is supported by the three paper tubes 10 by being inserted into the three paper tubes 10 so that the end portions of the plate 13 penetrate these slits 3. The slit 3 may not be formed in the two paper tubes 20 that do not support the plate body 13. The desirable thickness, inner diameter, and length of the paper tubes 10 and 20 constituting the frame body 105 are the same as those described for the paper tubes 10 constituting the frame body 104.

The joint 11 illustrated in FIG. 5 can be formed not only so as to extend the two protrusions 19 in two directions orthogonal to each other, but also to extend in two directions intersecting at various angles. Thereby, as illustrated in FIG. 6, the paper tubes 10 and 20 are connected by the joint 11 so that the paper tubes 10 and 20 form a continuous plurality of sides of a polygon (including a triangle) other than a quadrangle. Is also possible.
In the illustrated example, the cap 21 is connected to one end of the two short paper tubes 10 instead of the joint 11. For example, the cap 21 has a shape in which a protrusion similar to the protrusion 19 of the joint 11 illustrated in FIG. 5 protrudes from the flat bottom surface of the hemispherical main body, and this protrusion is one end of the paper tube 10. Is fitted into the inner cavity of the paper tube 10. The cap 21 is made of, for example, a synthetic resin.
In the frame body 105 illustrated in FIG. 6, the plate body 13 is supported by three paper tubes 10. On the other hand, it is also possible to support the plate 13 by two paper tubes 10. For example, in FIG. 6, the paper tube 20 is replaced with a paper tube 10 having the same length, the paper tube 10 is replaced with a paper tube 20 having the same length, and the two paper tubes 10 after replacement (paper in FIG. 6). The plate 13 is inserted into the paper tube 10 so that the end of the plate 13 penetrates the slit 3 of the paper tube 10) arranged at the position of the tube 20, so that the plate 13 has two paper tubes 10. May be supported by. Further, in the frame body 104 exemplified in FIG. 4, the plate body 13 has two paper tubes 10 (two upper and lower paper tubes 10 in FIG. 4) forming a long side of a quadrangle, or two paper tubes 10 forming a short side. It may be supported only by the paper tube 10 (two paper tubes 10 on the left and right in FIG. 4).

FIG. 7 is a photograph illustrating a prototype of an assembly including the frame body 104 illustrated in FIG. 4 as a component. The assembly 106 of the illustrated example has a structure in which legs are added to the frame body 104, and can be used as, for example, a tsuitate. The plate body 13 is a transparent acrylic plate in the illustrated example. By using a three-way joint in addition to the two-way joint illustrated in FIG. 4 for the joint 11, it is possible to realize an assembly having such a three-dimensional structure. As the three-way joint, for example, a protrusion 19 illustrated in FIG. 5 having a shape protruding from the main body 17 in three directions can be used. In the illustrated example, a paint that imparts metallic luster is applied to the outer surface of the paper tube.

FIG. 8 is a photograph illustrating another prototype of the assembly including the frame 104 illustrated in FIG. 4 as a component. The assembly 107 of the illustrated example also has a structure in which legs are added to the frame body 104. The assembly 107 can be used, for example, as a table, a table, or the like. By using a three-way joint as the joint 11, an assembly having such a three-dimensional structure can be realized.

FIG. 9 is a photograph illustrating yet another prototype of the assembly including the frame 104 illustrated in FIG. 4 as a component. The assembly 108 in the illustrated example has a structure in which a three-stage frame body 104 is connected to four columns. The assembly 108 can be used, for example, as a rack. By using a four-way joint in addition to the three-way joint as the joint 11, an assembly having such a three-dimensional structure can be realized.

FIG. 10 is a front view illustrating a set of partition plates constituting a partition using the paper tube 103 illustrated in FIG. 3, and FIGS. 10A and 10B are each of a set of partition plates. One and the other are illustrated. The partition plate 23 illustrated in FIG. 10A is formed with a slit 25 extending vertically downward from the horizontal center of the upper end edge. In the illustrated example, the slit 25 is formed at a depth reaching the vertical center of the partition plate 23. Further, notches 27 and 29 are formed at the horizontal centers of the upper end edge and the lower end edge, respectively. The widths of the cutouts 27 and 29 correspond to the outer diameter of the paper tube 103 exemplified in FIG. 3 used as the support of the partition, and the depth is the end portion of the paper tube 103 in which the slits 3A and 3B are not formed. Corresponds to the length along the axis 5. The notch 29 may not be formed as illustrated by the dotted line.

The partition plate 31 illustrated in FIG. 10B has a shape in which the partition plate 23 is turned upside down. That is, the partition plate 23 and the partition plate 31 can be manufactured in the same shape and used upside down. The partition plate 23 and the partition plate 31 can be manufactured, for example, by cutting out corrugated cardboard.

FIG. 11 is a perspective view illustrating a partition using the paper tube 103 exemplified in FIG. 3 and a set of partition plates 23, 31 exemplified in FIG. 10. In the partition 109, the partition plates 23 and 31 are supported by the paper tubes 103 used as columns so as to intersect each other at their respective horizontal centers. The partition 109 thereby divides the space around the paper tube 103 as a support into four areas.

As an example, the paper tube 103 is used in a posture in which the right end of FIG. 3A is the upper end. At this time, the partition plate 23 is inserted into the paper tube 103 from the lower end so as to penetrate the two slits 3A, and the partition plate 31 is inserted into the paper tube 103 from the upper end so as to penetrate the two slits 3B. The partition plate 23 and the partition plate 31 interfere with each other in the inner cavity of the paper tube 103 by the partition plate 31 penetrating the slit 25 of the partition plate 23 and the partition plate 23 penetrating the slit 25 of the partition plate 31. Cross without crossing. The notch 27 contributes to avoiding interference between the end portions of the paper tube 103 in which the slits 3A and 3B are not formed and the partition plates 23 and 31.

In the illustrated example, the partition plates 23 and 31 intersect at a right angle, but the intersection angle is not limited to a right angle. Further, although the example in which the partition plates 23 and 31 intersect at the respective horizontal centers is shown, they may intersect at different portions.

12 is a perspective view illustrating the paper tubes 10 and 15 used for the frame body 104 exemplified in FIGS. 4 and 5, and FIG. 12A is a paper tube composite in which the paper tube 10 and the paper tube 15 are combined. The body is illustrated, and (b) illustrates the paper tube 15. The paper tube composite 110 has a paper tube 10 and a paper tube 15. The paper tube 10 has a slit 3, which extends from one end along the shaft 5 to the other end along the shaft 5 and penetrates the wall 1 inward and outward. The paper tube 15 is a paper tube arranged in a part along the axis 5 of the paper tube 10 and surrounding the part so as to be in contact with the part. In the illustrated example, as illustrated in FIG. 4, the paper tube 15 is arranged at both ends of the paper tube 10. The paper tube 15 may be arranged at any portion along the axis 5 of the paper tube 10, if necessary. Further, the number of paper tubes 15 is not limited to two, and may be one or three or more. According to the paper tube composite 110 configured as described above, as illustrated in FIG. 4, the plate body 13 can be inserted into the paper tube 10 so as to penetrate the slit 3. Further, although the slit 3 of the paper tube 10 extends from one end to the other end, the paper tube 10 reinforces the paper tube 10.

1 wall body, 3 slits, 5 axes, 3A slits, 3B slits, 7A axes, 7B axes, 10 paper tubes, 11 joints, 13 plates, 15 paper tubes, 17 main bodies, 19 protrusions, 20 paper tubes, 21 Cap, 23 dividers, 25 slits, 27,29 notches, 31 dividers, 101,102,103 paper tubes, 104,105 frames, 106,107,108 assemblies, 109 partitions, 110 paper tube composites.

Claims (2)

It ’s a partition,
A paper tube used as a support and
A first partition plate and a second partition plate that divide the space around the support column into four areas by being supported by the support column so as to intersect each other are provided.
The paper tube has slits that extend along the axis and penetrate the wall in and out, leaving at least one of the ends along the axis.
The slit is
Two first slits extending along the axis and axisymmetric with each other, leaving one end of the two ends,
It includes two second slits that extend along the axis and are axisymmetric to each other, leaving the other end of the ends.
The two first slits and the two second slits have different positions in the circumferential direction in the paper tube.
The paper tube has a posture in which one end thereof is an upper end portion and the other end portion is a lower end portion.
The first partition plate is inserted into the paper tube so as to penetrate the two first slits.
The second partition plate is inserted into the paper tube so as to penetrate the two second slits.
The first partition plate has a third slit extending from the upper end along the axis of the paper tube.
The second partition plate has a fourth slit extending from the lower end along the axis of the paper tube.
In the first partition plate and the second partition plate, the second partition plate penetrates the third slit and the first partition plate penetrates the fourth slit, whereby the first partition plate and the second partition plate penetrate each other inside the paper tube. Partitions that intersect without interference. The partition according to claim 1 , wherein the first partition plate and the second partition plate are made of paper.

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