JP6478399B2 - Wagi - Google Patents

Description

  The present invention relates to a wheel used to lay a building material or the like when temporarily placing a building material or the like on the ground or the like, and in particular, even when a non-uniform load is applied to the placement surface, The present invention relates to a ring with high buckling resistance.

  Conventional rings have been made of wood or ALC (Autoclav Lightweight Concrete), but none of them are lightweight, and it is difficult to move easily when moving, and there is a problem in handling. In response to such a problem, for example, Patent Documents 1 and 2 disclose a wheel ring made of a resin molded product in which a band-shaped member is formed in a corrugated shape. This wheel has the advantage of being lighter and easier to handle than conventional wheels.

Japanese Utility Model Publication No. 7-19504 JP 2004-107914 A

In use, the above-mentioned wheel is placed on the ground or the like in a state where the plane is vertical. At that time, if a non-uniform load is applied to the mounting surface, the wheel is likely to fall down.
Moreover, when not in use, the wheel is placed on its side, and a plurality of wheels are stacked. However, since the ring has a wave shape in the longitudinal direction of the belt-like member, there is a problem that a gap is formed between the convex surface portion and the ground or the like when it is laid down, so that it is bulky in the stacking direction.
An object of the present invention is to provide a ring with high buckling resistance that is difficult to fall even when a non-uniform load is applied to the mounting surface.

  The present inventor has made extensive studies in view of the above situation, and is a strip material made of synthetic resin, and when it is formed into a cylindrical shape, the property of returning to the original substantially flat strip shape The cylindrical body formed by using a member having the above has the compression resistance required when using a wheel, and it is difficult to collapse even when a non-uniform compression load is applied, and the buckling resistance is good. I found it. Further, in the case of forming a joining portion that joins the vicinity of one end portion in the longitudinal direction of the belt-like material and the other portion so as to be detachable, it can be stored as a substantially flat belt-like body when not in use, and the present invention is completed. It came.

That is, the wheel ring according to the present invention is a cylindrical body made of a synthetic resin band-shaped material, and the band-shaped material has a force to expand from the cylindrical body to a substantially flat band-shaped body, and the cylindrical shape. A bottom plate is provided at the bottom of the body, and a part of one end portion in the width direction of the belt-like material and a part of the bottom plate are rotatably connected via a connecting part. It has the junction part which joins a cylindrical body and a baseplate so that attachment or detachment is possible, It is characterized by the above-mentioned.

  The ring according to the present invention is not easily deformed and has high compression resistance. Further, even when a non-uniform load is applied to the mounting surface, it is difficult to fall down and has high buckling resistance.

It is a figure which shows the example of the hollow resin board used as the member of the ring wood concerning this invention, (a) is a perspective view which shows the structure of a two-layer bubble board, (b) is a perspective view which shows the structure of a three-layer bubble board (C) is a perspective view which shows the structure of a plastic corrugated cardboard. It is a perspective view which shows the outline of 1st embodiment of the ring-wheel based on this invention. FIG. 3 is a plan view of the wheel tree shown in FIG. 2. FIG. 3 is a development view of the ring tree shown in FIG. 2. It is a perspective view which shows the example of a use condition of the ring wood shown in FIG. It is a perspective view which shows the outline of 2nd embodiment of the ring-wheel based on this invention. FIG. 7 is a plan view of the wheel tree shown in FIG. 6. It is an expanded view of the ring tree shown in FIG. It is drawing explaining formation of the hinge part by V-shaped process. It is a perspective view which shows the outline of 3rd embodiment of the ring-wheel based on this invention. It is a top view of the ring tree shown in FIG. It is an expanded view of the ring tree shown in FIG.

The ring according to the present invention is a cylindrical body made of a synthetic resin band-shaped material, and the band-shaped material has a force to develop from the cylindrical body to a substantially planar band-shaped material.
In the present invention, the band-shaped material is made of a synthetic resin, and when the band-shaped material is formed into a cylindrical shape, the property of returning to the original substantially flat band-shaped body (hereinafter, this property is referred to as “having a developing force”). Use the member you have. In a cylindrical body formed by using a belt-like body having a deployment force, a force for spreading from the inner direction to the outer direction of the cylindrical body acts on the belt-like body. This action makes it difficult for the cylindrical body to lose its shape and improves compression resistance. Furthermore, when a non-uniform load is applied to the mounting surface, the wheel is unlikely to fall down and the buckling resistance is improved.

Such a strip-shaped material is not particularly limited as long as it is a flexible and synthetic resin member having a developing force. Since it is lightweight and excellent in compression resistance, a hollow resin plate is preferred.
As the hollow resin plate, for example, a two-layer bubble board, a three-layer bubble board, or a plastic cardboard can be used.

FIG. 1 is a view showing an example of a hollow resin plate as a member of a wheel according to the present invention, wherein (a) is a perspective view showing a structure of a double-layer bubble board, and (b) is a structure of a three-layer bubble board. (C) is a perspective view which shows the structure of a plastic corrugated cardboard.
As shown in FIGS. 1A and 1B, the bubble board has a cap sheet 101 on which a large number of caps 101a bulging in a hollow shape are formed as a core material. There are a two-layer bubble board 100A in which the back sheet 102 is laminated on the opening side, and a three-layer bubble board 100B in which the liner sheet 103 is laminated on the cap upper surface side of the cap sheet 101.
The thicknesses of the cap sheet 101, the back sheet 102, and the liner sheet 103 can be appropriately adjusted in consideration of strength, rigidity, and the like required for the bubble board. Usually, it can be about 100 μm to 1.5 mm, for example. Further, the shape of the cap 101a formed on the cap sheet 101 is not limited to a cylindrical shape as illustrated. It is good also as a truncated pyramid shape, a truncated cone shape, etc.
Instead of such a bubble board, a hollow resin plate or the like in which the core material is formed by a honeycomb structure can also be used.
As shown in FIG. 1C, the plastic corrugated cardboard 110 is configured to have a hollow section having a rectangular cross section in which a large number of wall materials 112 are arranged between upper and lower plate members 111.

  Examples of the material forming the hollow resin plate include polyolefin resins such as polypropylene and polyethylene, polystyrene resins such as polystyrene, polyester resins such as polyethylene terephthalate, and polyamide resins such as nylon.

The hollow resin plate preferably has a structure in which a three-dimensionally processed core material for forming a hollow structure and a flat outer packaging material are laminated on at least one of the front surface and the back surface of the core material. By having a laminated structure of two or more layers, for example, a hinge portion that generates a force to return to the original state when bent can be easily formed by V-shaped processing. With such a hinge, the load resistance during use of the wheel can be improved. In addition, when not in use, a force is applied to automatically expand from the cylindrical body to the substantially flat belt-like body. Moreover, the strip | belt-shaped material which comprises a wheel can be easily manufactured from one continuous hollow resin board. Examples of such a hollow resin plate include the above-mentioned two-layer bubble board and three-layer bubble board, which can be manufactured continuously.
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a ring according to the present invention will be described with reference to the drawings.

[First embodiment]
2 is a perspective view of the wheel according to the first embodiment of the present invention, FIG. 3 is a plan view of the wheel shown in FIG. 2, and FIG. 4 is a development view of the wheel shown in FIG. It is. FIG. 5 is a perspective view showing an example of a usage state of the wheel shown in FIG.

The wheel ring 1 in this embodiment is a cylindrical body made of the strip material 11 of the three-layer bubble board described above. The strip 11 is detachable, comprising a planar fastener 12a provided near one end in the longitudinal direction and a planar fastener 12b provided near the other end and provided on the back side of the surface provided with the planar fastener 12a. The joint portion 12 is provided.
The wheel 1 is arranged on the ground as shown in FIG. 5, and the building material W and the like are placed on the upper surface of each wheel 1.
When used as a ring, the longitudinal ends of the strip-shaped material 11 are joined to each other at the joint 12 to form a substantially cylindrical tubular body. In this embodiment, since the mounting surface on which the building material is placed is a circle or an ellipse, the compression resistance is high, and the ring is hard to fall down and hardly buckle.
On the other hand, when not in use, by releasing the joining of the joining portion 12, the belt-like material 11 can be automatically developed to be a substantially flat belt-like shape. Therefore, volume reduction is easy.

[Second Embodiment]
FIG. 6 is a perspective view of the wheel according to the second embodiment of the present invention, and FIG. 7 is a plan view of the wheel shown in FIG. FIG. 8 is a development view of the tree shown in FIG.

  The ring 2 in the present embodiment is a cylindrical body made of a strip-like material 21 of a three-layer bubble board. The belt-like material 21 has a configuration in which a total of four long side members 21 a and short side members 21 b are connected via hinge portions 24. In the present embodiment, the hinge portion 24 is formed by performing V-shaped processing on the three-layer bubble board.

Here, the V-shaped processing will be described with reference to FIG. FIG. 9A is a cross-sectional view of the three-layer bubble board corresponding to FIG. 1B described above, and FIG. 9B is a cross-section showing a state in which the V-shaped processed portion is formed on the three-layer bubble board. FIG. 9C is a cross-sectional view showing a state in which the three-layer bubble board is bent.
The V-shaped processing portion 201 (hinge portion) shown in FIG. 9B can be formed by melting the cross section into a V shape by applying a heating rod to the three-layer bubble board 100B (thermal ruled line processing). By providing the V-shaped processing portion 201, the three-layer bubble board 100B is bent toward the side where the V-shaped processing portion 201 is provided, as shown in FIG. 9C. Further, due to the elasticity of the liner sheet 103, the V-shaped processed portion 201 attempts to return to a flat shape from the bent state (see FIG. 9C) (see FIG. 9B).
It should be noted that when forming the V-shaped processed portion, it may be melted into a V-shaped cross section on either the back sheet 102 side or the liner sheet 103 side of the three-layer bubble board 100B.

  In this embodiment, the belt-like material 21 is bent at the hinge portion 24 to form a cylindrical body having a substantially rectangular plane. The strip-shaped material 21 is provided with a tag-shaped planar fastener 22a on the side of one end in the longitudinal direction, and can be detached together with the planar fastener 22b provided near the other end in the longitudinal direction of the strip-shaped material 21. The junction 22 is formed.

In the present embodiment, as in the first embodiment, when used as a wheel, a cylindrical body is obtained by joining the longitudinal end portions of the belt-like material 21 to each other at the joining portion 22. Therefore, since the mounting surface is annular, it has high compression resistance and is difficult to buckle because the wheel is unlikely to fall down.
Further, when not in use, the band-like material 21 can be developed by releasing the joint portion 22 to form a substantially flat belt-like shape. In the present embodiment, since the hinge portion 24 tends to return to the original flat shape in the bent state, the strip-shaped material automatically expands into a substantially flat strip shape when the joining is released. Therefore, volume reduction is easy.
In the present embodiment, since the folding of the belt-like material can be suppressed by providing the hinge portion, for example, when the flexibility of the members constituting the belt-like material is low or the diameter of the cylindrical body is small, the belt-like material is enlarged. Suitable when it is necessary to bend.

  What is necessary is just to adjust the dimension of the wheel 2 suitably in consideration of the usage pattern and required performance. Examples of dimensions include a height of about 200 mm, a side length of the short side member of about 150 mm, and a side length of the long side member of about 550 mm, but are not limited thereto.

[Third embodiment]
FIG. 10 is a perspective view of the wheel according to the third embodiment of the present invention, and FIG. 11 is a plan view of the wheel shown in FIG. 12 is a development view of the tree shown in FIG.

The wooden ring 3 in the present embodiment is obtained by providing a bottom plate on the circular tree 2 according to the second embodiment described above. The wheel 3 has a cylindrical body made of a strip-like material 21 of a three-layer bubble board and a bottom plate 31. The belt-like material 21 is the same as that of the second embodiment, and has a configuration in which long-side members 21a and short-side members 21b are alternately connected via hinge portions 24, and both ends of the belt-like material 21 are detachably joined. It has the junction part 22 to do. One end of the bottom plate 31 and one end of the long side member 21 a constituting the belt-like material 21 are connected via a hinge part 34. In addition, an extended portion is connected to the end on the long side of the bottom plate 31 via a hinge portion 34. A planar fastener 32a is provided on the surface of the extended portion, and a detachable joint portion 32 is formed together with the planar fastener 32b provided near the end of the long side member 21a on the bottom plate 31 side.
As in the second embodiment, in this embodiment, the hinge portions 24 and 34 are formed by applying a V-shape to the three-layer bubble board 100B.
In addition, it is also possible to provide a planar fastener 22b that forms a joint 22 together with a planar fastener 22a provided at one end in the longitudinal direction of the strip 21 near the other end in the longitudinal direction of the strip 21. In this embodiment, the planar fastener 22b and the planar fastener 32b are integrally provided on the long side member 21a.

In the present embodiment, each member is bent at the hinge portions 24 and 34 to form a cylindrical body having a substantially rectangular plane and having a bottom plate. When used as a ring, a cylindrical body is obtained by joining the longitudinal ends of the strip 21 at the joint 22. In addition, the long side end portion of the bottom plate 31 is joined to the cylindrical body by the joining portion 32. Since the bottom plate 31 functions as a fixing member for the cylindrical body, the shape of the bottom plate 31 is less likely to collapse than that of the ring 2 without the bottom plate 31, and the buckling is less likely to fall down, thereby improving the buckling resistance.
Further, when not in use, the belt-like material 21 can be developed by releasing the joint portions 22 and 32 to form a substantially flat belt-like shape. The bottom plate 31 can also be developed in the same plane as the band-like material 21 by the hinge portion 34. Therefore, volume reduction is easy.

  As described above, a plurality of embodiments of the wheel according to the present invention have been shown and described. However, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. Needless to say.

For example, in 2nd embodiment and 3rd embodiment, although the hinge part was formed by V-shaped process, it is not limited to this. For the hinge portion, an elastic resin material and rubber, a metal flat hinge, a hinge with a spring, or the like may be used. Further, as a processing method for forming the hinge portion, a cut (half cut) process or the like may be employed.
In addition, although the belt-like material is provided with three hinge portions and the plane in use is a rectangular wheel, the present invention is not limited to this, and the belt-like material may have at least one hinge portion. For example, the number of hinge portions may be two or three, and it may be a tree having a triangular plane, or five or more, and a tree having a more polygonal plane.
Moreover, although the strip | belt-shaped material 21 was formed from the long side member and short side member from which length differs, the length of the side of each member may be the same.

Moreover, about the junction part of strip | belt-shaped material, although all used the planar fastener in this-application embodiment, you may use an adhesive tape, a rivet, etc. in addition.
Moreover, although the both ends vicinity of the longitudinal direction of the strip | belt-shaped material was joined, it is not limited to this. For example, the planar fastener of the first embodiment may be formed in the vicinity of one end portion in the longitudinal direction of the belt-like material and in the vicinity of the substantially central portion in the longitudinal direction. In this case, by winding the other end in the longitudinal direction of the belt-shaped material around the center of the cylinder, a cylindrical body having a substantially double cylinder structure is obtained, so that further improvement in compression resistance can be expected.

  The ring of the present invention has a simple structure and is easy to manufacture. Moreover, it is hard to lose a shape with respect to the compressive force by building materials etc. In addition, the volume can be reduced to a flat shape when not in use, which can contribute to space saving in the storage location. Therefore, it is suitable as a wheel used at a construction site or a construction site.

1-3 Ring wood (tubular body)
11, 21 Band-like material 12, 22, 32 Joining part 12a, 12b, 22a, 22b, 32a, 32b Planar fastener 24, 34 Hinge part (connection part)
31 Bottom plate 100A Double-layer bubble board 100B Three-layer bubble board 101 Cap sheet 101a Cap 102 Back sheet 103 Liner sheet 110 Plastic cardboard 111 Plate material 112 Wall material 201 V-shaped processing part (hinge part)

Claims (5)

A cylindrical body made of a synthetic resin band-shaped material,
While the band-shaped material has a force to expand from a cylindrical body to a substantially planar band-shaped body ,
Having a bottom plate at the bottom of the cylindrical body,
A part of one end part in the width direction of the belt-like material and a part of the bottom plate are rotatably connected via a connecting part,
In addition to the connection part, the ring member has a joint part that joins the cylindrical body and the bottom plate in a detachable manner. A joining portion that joins the vicinity of one end portion in the longitudinal direction of the belt-like material and the other portion so as to be detachable,
At the time of use, a cylindrical body is formed by joining the vicinity of one end in the longitudinal direction of the strip and the other part,
2. The ring according to claim 1, wherein, when not in use, the band-shaped material can be formed into a substantially flat band shape by releasing the joining.   3. The ring according to claim 1, wherein the belt-shaped member has a hinge portion that generates a force to return to an original state when bent.   The ring according to any one of claims 1 to 3, wherein the belt-like material is a hollow resin plate.   The hollow resin plate has a structure in which a three-dimensionally processed core material for forming a hollow structure and a flat outer packaging material are laminated on at least one of the front surface and the back surface of the core material, The wheel according to claim 4.

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