JPH0810443A - Foldable geometric toy and manufacture thereof - Google Patents

Abstract

PURPOSE:To manufacture at a low cost a geometric toy which can be folded inside out by connecting four square side plates in the form of a cylinder and forming the first hinges at connections and the 2nd hinges along diagonal lines of the side plates. CONSTITUTION:Unit pieces 3a separated by the second slit 7 are connected at a bridge portion 9 in forming a substrate 3 at an unfolded state by forming the first slit 5 and the second slit 7 in a material sheet such as cardboard. Unit pieces 3a are connected by plastering a film to the sheet and then both ends of an unfolded substrate are bonded together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bendable geometric playground equipment as proposed by the applicant of the present invention in a utility model registration application (Japanese Utility Model Application No. 60-180487) and a method of manufacturing the same.

[0002]

2. Description of the Related Art The applicant of the present application is the above-mentioned Japanese Utility Model Laid-Open No.
In No. 80487 (and design registration No. 709254), a tubular body having a square shape in plan view is formed by connecting four side plates formed in a square shape, and a connecting portion of adjacent side plates is bendable with a first hinge portion. On the other hand, on each side plate, an X-shaped second hinge portion extending along a diagonal line is formed, and a plurality of geometric play tools that can be turned upside down by bending a plurality of times at both hinge portions are turned upside down. Proposed.

In this prior application, the first hinge portion and the second hinge portion
As one means for forming a sheet, each side plate is formed into a laminated body with a substrate made of a relatively rigid sheet such as a cardboard and a foldable film such as a soft synthetic resin film, and they are adjacent to each other. The substrate in the side plate is divided by the first slit, and the four substrates are divided by the X-shaped slit extending overlapping the diagonal line into four unit pieces, while the adjacent unit pieces are formed by the film. Connect, that is, first
It has been described that the portions of the first and second slits are formed as bendable hinge portions by configuring the portions of the first and second slits only with the film.

[0004]

However, in the construction of this prior application, since the 16 unit pieces constituting the four side plates are separated into pieces, the geometric play equipment is manufactured first. A sheet of cardboard or the like is used as a material to form 16 right-angled isosceles triangular unit pieces, and the 16 unit pieces are arranged in a developed state, and each unit piece is 1 in that state.
By sticking to one (or two front and back) film,
It is difficult to automate the manufacturing process because it is necessary to connect the unit pieces to each other with a film, and the process of attaching the 16 unit pieces to the film with positioning is difficult, which makes it difficult to automate the manufacturing process. There is a problem that the manufacturing cost increases.

It should be noted that, without using the film, the side plate is formed as a single layer with a sheet of cardboard or the like, and with the sheet of material, the geometric play equipment is formed in an expanded state, and the sheet in the expanded state is It is conceivable that a sewing line may be engraved at each hinge part or a fold groove may be formed with Thomson, but in this way, the hinge part is simply formed by a sewing line or fold groove. However, since the adjacent unit pieces cannot be bent so as to be in close contact with each other, it cannot be practically used as a play equipment.

The present invention has been made in view of the above problems, and an object thereof is to make it possible to inexpensively manufacture a bendable geometric playground equipment.

[0007]

In order to achieve this object, according to the present invention, as described in claim 1, "the four side plates formed in a square shape are connected to each other so that the plan view is opened vertically. A rectangular tubular body is formed, and each of the side plates is composed of a relatively rigid substrate such as a cardboard and a foldable film attached to the front surface or the back surface or both front and back surfaces of the substrate to form a laminate. Substrates of adjacent side plates are separated by a first slit, and the substrates of each side plate are divided into four unit pieces by an X-shaped second slit extending in a diagonal direction of the side plate, while the film is By sticking to the unit piece while straddling each of the slits, the first slit and the second slit are formed into a bendable hinge portion, and thus, are folded upside down. Geometric playground equipment I, the mutual unit pieces adjacent phases across the second slit at the side plates, and the configuration of the "connecting at freely bridge portion bending.

As a method for manufacturing a folding play equipment according to a first aspect of the present invention, as described in the fourth aspect, "a sheet of cardboard or the like is used as a material to form the four substrates in a developed state. In doing so, the first slit and the second slit are punched and formed while leaving the bridge portion, and then, the four slits are formed on the front surface or the back surface or both front and back surfaces of the sheet formed in the expanded state of the four substrates. A film is attached so as to cover almost the whole of the substrate formed in the expanded state, and then the films of the side plates located at both ends in the expanded state are joined to each other to form a tubular shape. ” I made it up.

The unit pieces on both sides of the first slit may be integrally connected by a bendable bridge portion.

[0010]

According to the structure of the present invention, when the sheet is made of the four substrates and the sheet is formed, the first and second slits are punched in the sheet, and Since the unit pieces adjacent to each other on the substrate are connected to each other by the bridge portion, the 16 unit pieces forming each substrate are held in a state of being integrally connected to the material sheet without being separated from each other. Therefore, it is possible to form 16 unit pieces in a state in which they are connected by a film in a very simple process of punching a slit in a material sheet and then attaching a film to the material sheet. As a result, the geometric play equipment can be manufactured at low cost by promoting automation and efficiency of the manufacturing process.

On the other hand, since the bridge portion is only partially provided along the longitudinal direction of the second slit (and the first slit), the second hinge portion (and the first hinge portion) even if the bridge portion is provided. Can be easily folded. In other words, the ease of bending the hinge portion is not impaired. Therefore, according to the present invention, it is possible to inexpensively manufacture a bendable geometric playground equipment.

Further, according to the constitutions of claims 2 and 3, the geometric play equipment can be used as a packaging container (packing box), while after taking out the contents, the lid plate is the upper end of the side plate. Use as a bendable geometric playground equipment by cutting along the edge and cutting the bottom plate along the lower edge of the side plate (in the case of claim 3, by further cutting each tubular body). Therefore, the utility value can be further improved.

[0013]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows the geometric play equipment of the first embodiment, and the geometric play equipment 1 is formed in a cylindrical shape having a square shape in plan view, which is opened vertically by connecting four side plates 2 in series. ing. Each side plate 2 is formed into a two-layer laminated body by a substrate 3 formed of a sheet having relatively high rigidity (hard to bend) and a foldable film 4 attached to the surface thereof.

As the material of the substrate 3, various materials such as cardboard and thin synthetic resin plate can be used, and as the material of the film 4, polypropylene, nylon, polyethylene terephthalate, vinyl chloride, urethane, and tough material are used. Various materials such as thin paper and mesh can be used. The spaces between the substrates 3 on the side plates 2 adjacent to each other are completely separated by the first slits 5 extending along the ridgeline of the tubular body, while the film 4 extends across the substrates 3. Therefore, the first slits 5 are formed in one sheet, and the first slits 5 are formed in the bendable first hinge portion 6.

Further, by forming a second slit 7 extending in an X shape on each substrate 3 so as to overlap with two diagonal lines of the substrate 3, a bendable second hinge portion extending along the diagonal direction is formed. 8 is formed, and the substrate 3 is divided into four unit pieces 3a each having an isosceles right triangle shape. The unit pieces 3a adjacent to each other are integrally connected to each other via a bendable narrow-width bridge portion 9, in other words, the second slits 7 are formed to extend intermittently. . The end of the second slit 7 and the end of the first slit 5 communicate with each other.

The geometric play equipment 1 configured as described above can be turned upside down by bending a plurality of times. When the film 4 is transparent, it is desirable that the front and back surfaces of the substrate 3 be different in color so that the state in which the geometric play equipment 1 is turned upside down becomes clear, and when the film 4 is opaque. It is desirable to make the color of the film 4 and the color of the substrate 3 different.

Next, the geometric play equipment 1 according to the first embodiment.
2nd Example which is a manufacturing method of is described based on FIGS. In this embodiment, two geometric play equipments 1 are manufactured, and first, a sheet 10 as a material of the substrate 3 as shown in FIG. 2 is prepared. The sheet 10 has such a width dimension that the substrates 2 can be arranged in two rows side by side with a margin, and the sheet 10 has a first slit 5 and a second slit 7 as shown in FIG. In the unfolded state, two upper and lower stations are punched and formed.

At this time, a connection margin 10a is provided at a position outside the expanded area of the substrate 3, and the unit pieces 3a of the substrate 3 that are adjacent to each other on the left and right sides are connected via the connection margin 10a. Sheet 1 without 3a falling apart
I am trying to be in a state of being integrally connected to 0. In addition, the first slit 5 located at the end has the first
A glue margin 12 is formed by engraving a lateral C-shaped cut 11 communicating with the slit 5.

Next, the film 4 is attached to the surface of the sheet 10 by an appropriate means such as heat sealing, and then the coupling allowance 10a is cut off from the sheet 10 as shown in FIG. Form the one in the expanded state,
Then, as shown in FIG. 5, the glue allowance 12 connected to one end
Is bonded to the substrate 3 at the other end by an appropriate means such as heat sealing or gluing. As a result, the geometric play equipment 1 is completed.

In this manufacturing method, since the adjacent unit pieces 3a on each substrate 3 are connected via the bridge portion 9, the 16 unit pieces 3a are connected to each other in a plate shape without being disjointed. Slits 5 and 7
By adhering the film 4 to the sheet 10 formed by punching, the unit pieces 3a can be adhered to the film 4, so that the manufacturing process can be automated and the manufacturing cost can be remarkably reduced. .

It is also possible to use a roll-shaped material sheet 10 and continuously manufacture it by sequentially performing punching and film sticking steps while feeding it out by a certain size. Alternatively, it may be continuously manufactured by feeding out the sheets cut into a certain size one by one. 6 and 7 show a third embodiment in which the geometric playground equipment 1 is also used as a container. Of these, FIG. 6 is a diagram showing the geometric playground equipment 1 in an expanded state, and FIG. 7 is a perspective view in an assembled state. Is.

In this third embodiment, four substrates 3 are used.
The lid plate 13 is integrally connected to the upper end of the upper unit piece 3a of the arbitrary substrate 3, and the bottom plate 14 is integrally connected to the lower end edge of the lower unit piece 3a of the same substrate 3. A film 4 is attached to the surfaces of the lid plate 13 and the bottom plate 14, and a sewing line 15 for forming and cutting a fold line is engraved at the root of the lid plate 13 and the bottom plate 14. The sewing line 15 may be formed so as to penetrate the film 4, or may be provided only on the substrate 3.

In the third embodiment, by assembling as shown in FIG. 7, it can be used as a packaging container (packaging box) capable of storing products inside. After the consumer removes the contents, the lid plate 13 and the bottom plate 14 can be torn or cut off to be used as the bendable geometric play equipment 1.

FIG. 8 shows a fourth embodiment which is a modified example in which the geometric play equipment 1 is also used as a container. Among them, FIG. 8 (a) shows the cover plate 13 and the bottom plate 14. An outwardly-opened cut 16a is formed at the base, and in FIG. 8B, an outwardly-opened cut line 16b is formed at the base of the lid plate 13 and the bottom plate 14. In either case, the lid plate 13 and the bottom plate 14 can be easily cut off by hand. In this case, if the film 4 is uniaxially stretched and the molecular orientation is oriented in the direction indicated by the arrow A in (a), the film can be separated more easily.

Further, as shown in FIG. 8C, a slit 17 is formed at the base of the lid plate 13 and the bottom plate 14, which is useful when the substrate 3 is thick. In the fifth embodiment shown in FIG. 9, a plurality of geometric playground equipments 1 are vertically connected, a geometric play equipment 1 at the upper end is connected to a lid plate 13, and a geometric play equipment 1 at the lower end is connected to a bottom plate 14. It is suitable for the case where the article B to be wrapped is a long one such as a sausage, or a long one such as a case where biscuits are stacked in a rod shape and wrapped with paper.

In this fifth embodiment, the lid plate 13 and the bottom plate 14 are
After cutting out and, each geometric playground equipment 1 will be cut along the connecting line and used. When the geometric play equipment 1 is provided with the lid plate 13 and the bottom plate 14 to be used also as the container as in the third to fifth embodiments, as shown as the sixth embodiment in FIG. The film 4 may be provided only on the side plate 2 without extending the film 4. This has the advantage that the lid plate 13 and the bottom plate 14 can be easily bent and separated.

FIG. 11 shows a seventh embodiment in which the film 4 is attached to both front and back surfaces of the substrate 3. In this case, the colors of the inner and outer films 4 may be different. FIG. 12 shows an eighth embodiment in which unit pieces 3a adjacent to each other are connected by two bridge portions 9. As is clear from this embodiment, the number of bridge portions 9 can be set arbitrarily, and The width dimension of the bridge portion 9 (the dimension along the direction of the second slit 7) can also be set arbitrarily.

In the ninth embodiment shown in FIG. 13, the unit pieces 3a of the substrate 3 which are adjacent to each other with the first slit 5 interposed therebetween are bridged with each other.
It has been connected in. When formed in this way, 16
Since the unit pieces 3a of the sheet are connected to each other in a plate shape by the bridge portion 9, when the sheet 10 of material is punched out and formed in a developed state, the sheet 10 is connected to the sheet 10 as shown in FIG.
0a need not be provided, so that there is an advantage that the yield of the sheet 10 can be improved and the material cost can be saved.

FIGS. 14 to 15 show a tenth embodiment. In this embodiment, a long bridge portion 9 extending between the upper and lower ends of the geometric playground equipment 1 is provided between adjacent unit pieces 3a. And the hinge portions 6 and 8 are formed in each bridge portion 9 by forming two folding grooves 18 in Thomson. According to the structure of the tenth embodiment, the board 3 is provided at the upper and lower edges of the geometric play equipment 1.
Since the film 4 is continuously extended, the film 4 has an advantage that the film 4 is not torn from the upper edge portion or the lower edge portion, and therefore durability can be improved. Also, a total of 16
Since the unit pieces 3a of the sheet are connected to each other via the bridge portion 9, the yield of the material sheet 10 can be improved for the same reason as in the case of FIG.

FIG. 16 shows an eleventh embodiment which is a modified example of the tenth embodiment. The tenth embodiment is different from the crease groove 18 in that the bridge portion 9 has two sewing lines. 1
9 is engraved.

[Brief description of drawings]

FIG. 1 is a perspective view of a geometric playground equipment according to a first embodiment.

FIG. 2 is a perspective view of a seat used in a second embodiment, which is a method of manufacturing the geometric play equipment according to the first embodiment.

FIG. 3 is a plan view showing a step of punching a slit in a sheet.

FIG. 4A is a perspective view of a state in which it is formed in a developed state, and FIG. 4B is a sectional view taken along line bb of FIG.

5A is a plan view of an assembled state, and FIG. 5B is a bb view of FIG. 5A.

FIG. 6 is a development view of the third embodiment.

FIG. 7 is a perspective view of a geometric playground equipment according to a third embodiment.

FIG. 8 is a diagram showing a fourth embodiment.

FIG. 9 is a perspective view of a fifth embodiment.

FIG. 10 is a perspective view of a sixth embodiment.

FIG. 11 is a perspective view of a seventh embodiment.

FIG. 12 is a plan view of the eighth embodiment.

FIG. 13 is a development view of the ninth embodiment.

FIG. 14 is a partial plan view of the tenth embodiment.

15 is a sectional view taken along line XV-XV of FIG.

FIG. 16 is a plan view of the eleventh embodiment.

[Explanation of symbols]

 1 geometric play equipment 2 side plate 3 substrate 3a unit piece 4 film 5 first slit 6 first hinge part 7 second slit 8 second hinge part 9 bridge part 10 sheet 11 notch 12 glue margin 13 lid plate 14 bottom plate

Claims (4)

[Claims] 1. A four-sided square side plate is connected to form a tubular body having a rectangular shape in plan view with an opening at the top and bottom, and each side plate is formed of a relatively rigid substrate such as cardboard. , A laminate composed of a foldable film attached to the front surface or the back surface or both front and back surfaces of the substrate, and separating the substrates of adjacent side plates with a first slit,
While being divided into four unit pieces by the X-shaped second slit extending in the diagonal direction of the side plate, the film is attached to the unit piece while straddling each of the slits,
A geometric playground equipment in which each of the first slits and the second slits are formed in a bendable hinge part so that the hinges can be bent upside down, and the second slits in each side plate. A foldable geometric playground equipment in which unit pieces that are adjacent to each other with a fold in between are connected by a foldable bridge portion. 2. The "claim 1" according to claim 1, wherein a lid plate for closing an upper surface of the tubular body is integrally connected to an upper edge of the arbitrary side plate, and a lower surface of the tubular body is attached to a lower edge of the arbitrary side plate. A foldable geometric playground equipment, which can be used as a packaging container by integrally connecting a bottom plate that closes. 3. The "claim 1" according to claim 1, wherein a plurality of tubular bodies composed of four side plates are vertically connected to each other, and the upper end edge of any side plate located at the uppermost stage closes the upper surface of the tubular body. While connecting the lid plate integrally, by integrally connecting the bottom plate that closes the lower surface of the tubular body to the lower edge of any side plate located at the bottom, it can be used as a packaging container. Characteristic playground equipment that can be bent. 4. A method for manufacturing a geometric play equipment according to claim 1, wherein the four play substrates are formed by using a sheet of cardboard or the like as a material. In doing so, the first slit and the second slit are punched and formed while leaving the bridge portion, and then, the four slits are formed on the front surface or the back surface or both front and back surfaces of the sheet formed in the expanded state of the four substrates.
A film is adhered so as to cover almost the whole of the substrate formed in the expanded state, and then the films of the side plates located at both ends in the expanded state are joined to each other to form a tubular shape. A method for manufacturing a characteristic playground equipment that can be bent.