TW201927637A - container - Google Patents

Abstract

A container 1 includes a plurality of ring portions 5 spatially distanced from each other in an axial direction; and a helically structured cylinder portion 6. The helically structured cylinder portion 6 extends between the plurality of ring portions 5 adjacent to each other. The helically structured cylinder portion 6 has a plurality of oblique straight lines 23 of fold-ridge in view from outside the container 1. The plurality of oblique straight lines 23 are aligned at almost a constant interval in a circumferential direction. The helically structured cylinder portion 6 is foldable to enter into an inside space surrounded by one of the plurality of ring portions 5. A helical angle [theta]0 defined between one end 23A to the other end 23B of the oblique straight line 23 of the helically structured cylinder portion 6 in the circumferential direction is given by: where r and R are respective radiuses of first and second ring portions of the two ring portions, n is the number of the plurality of oblique straight lines 23, and h is the length of the helically structured cylinder portion 6 in the axis direction.

Description

container

The invention relates to a container.

In recent years, when a container such as a PET bottle is discarded and formed into a cylindrical shape, it is required to make the container smaller and flatten. In the past, various techniques have been proposed for flattening a container from its axial direction (see, for example, Patent Document 1).

Patent Document 1 discloses a container provided with a torsion shape of a cylindrical corpus callosum, which is changed in the radial direction to generate a concave-convex buckling mode, and the bending mode is bent in the axial direction of the corpus callosum. (Spiral structure tube). In the buckling mode, a plurality of peak lines (mountain fold lines) arranged in a peripheral direction and a plurality of valley lines (valley lines) formed so as to bridge the upper and lower ends of two adjacent peak lines are formed in the buckling mode. The container of Patent Document 1 arranges a plurality of peak lines at unequal intervals, thereby obtaining a reduction in the torque required for bending of the precursor of the buckling pattern.

In addition, Patent Document 1 describes that the torsion of the buckling precursor is folded and folded, and the corpus callosum is further flattened in the axial direction, thereby stabilizing the buckling mode on the inside of the corpus callosum. As a result, the container is suppressed Recovery (so-called rebound).
[Prior technical literature]
[Patent Literature]

[Patent Document 1] Japanese Patent No. 5713423

[Problems to be Solved by the Invention]

However, a container such as a PET bottle is formed of a raw material such as a synthetic resin having a predetermined elasticity. Therefore, even in the container of Patent Document 1, springback may occur due to the elasticity of the container raw material. In other words, there is still room for containers such as PET bottles to further suppress the rebound.
In order to further suppress the rebound of the container, it is also conceivable to form the container from a raw material having low elasticity, for example. However, at this time, the liquid in the container is likely to be crushed due to the state that the liquid such as a beverage is put in the container, so there is a possibility that the liquid in the container may leak out.

In addition, since the container of Patent Document 1 has peak lines constituting the spiral structure tube portion arranged at unequal intervals, it is a container having an asymmetrical appearance that is easy to crush the container with a small force and is not symmetrical.

The present invention has been developed in view of the above-mentioned circumstances, and has as its object to provide a container capable of further suppressing rebound and having a symmetrical shape that can be easily crushed.

[Means for solving problems]

In order to solve this problem, the container of the present invention is a container including a cylindrical main body cylindrical portion, wherein the main body container includes a plurality of annular portions formed in a ring shape and spaced axially from the main cylindrical portion. Arranged at intervals, the helical structured cylindrical portion is arranged between the two axially adjacent annular portions, and the two annular portions are relatively rotated around the axis of the main body cylindrical portion, thereby folding and making The two annular portions approach each other toward the axial direction, and the spiral structure cylindrical portion has an oblique extension in a peripheral direction with respect to the axial direction to connect the two annular portions to each other, and becomes a mountain fold when viewed from the outside of the container. Line, a plurality of inclined straight lines arranged at approximately equal intervals in the peripheral direction, and extending obliquely at an angle greater than the inclined straight line with respect to the axial direction to connect the two inclined straight lines adjacent to each other in the peripheral direction and borrow the above The diagonals of the quadrilaterals defined by the connecting line of the spiral structure tube portion and the two annular portions are seen from the outside of the container. At least a part of the helical structured cylindrical portion enters into either one of the annular portions, and a twisting angle from one end of the inclined straight line to the other end in the circumferential direction of the spirally structured cylindrical portion is set to one of the two annular portions. The radius of the first annular portion is r, the radius of the second annular portion is R, the number of the inclined straight lines is n, and the length of the spiral structure cylindrical portion in the axial direction is h. The container is defined by the torsion angle θ ₀ or more.

The container of the present invention folds a part of the spiral structured cylindrical portion to enter the inside of any one of the annular portions, whereby the spiral structured cylindrical portion is not only folded back inside the main body cylindrical portion to suppress warping and stabilized, but also folded back. The cylindrical part of the spiral structure can be hooked on the inside of one of the ring-shaped parts. Thereby, the folded-back spiral structure cylindrical part can be hold | maintained inside one ring-shaped part. Therefore, it is possible to further suppress the rebound of the container after being crushed in the axial direction than in the past.

Moreover, in the container of the present invention, the twist angle is larger than the twist angle θ ₀ defined by the above formula. Therefore, even if the inclined straight lines of the spiral structure tubular portions are arranged at approximately equal intervals, the folding requirement of the spiral structure tubular portions can be reduced. Force (torsion). That is, the container of the present invention is not only provided with a helical structure cylindrical portion having excellent symmetry and aesthetics, but also can be easily crushed with a small force.

In the container, the two annular portions may have higher strength in the axial direction than the spiral structure cylindrical portion.

In addition, the container may have the spiral structure cylindrical portion formed in a ring shape extending in the axial direction at an axial midway portion of the spiral structure cylindrical portion, and a ring bent radially inward when the spiral structure cylindrical portion is folded. Shape easily bendable part.

Further, in the container, a diameter dimension of the first annular portion may be smaller than a diameter dimension of the second annular portion, and the spiral structure cylindrical portion may be folded over the first annular portion to be disposed on the second The inside of the annular portion passes through the inside of the second annular portion.

Further, in the container, a diameter dimension of the two annular portions may be set so that the first annular portion is fitted inside the annular portion.

Further, in the container, the main body tubular portion may be provided with the spiral structure tubular portion continuously formed in the axial direction with respect to the second annular portion on a side opposite to the spiral structure tubular portion, and at least folded Accessible insertion tube.

Further, in the container, the insertion cylindrical portion may have a higher strength in the axial direction than the spiral structure cylindrical portion.

In addition, the container may include at least three of the annular portions, and the diameter ratio between the two annular portions of the plurality of annular portions located at both ends in the axial direction may be positioned at the two annular portions. The diameter dimension of the ring-shaped portion midway between them is large, and the diameter dimension of one end ring-shaped portion of the two end ring-shaped portions is smaller than the diameter size of the other end ring-shaped portion.

Further, in the container, the diameter size of the one end ring portion and the other end ring portion may be set so that the one end ring portion is fitted inside the other end ring portion. .

Furthermore, in the container, at least two of the halfway annular portions may be arranged at intervals in the axial direction, and one of the two halfway annular portions adjacent to the axial direction may be formed. It is a cylindrical shape which is entered by folding the above-mentioned spiral structure cylindrical portion located between the ring portion and the other halfway portion.

Further, in the container, the inclined straight lines of the two spiral structure cylindrical portions adjacent to the axial direction may be inclined in opposite directions with respect to the axis.

Further, in the container, the inclined straight lines of the two spiral structure cylindrical portions adjacent to the axial direction may be inclined in the same direction with respect to the axis.

[Effect of the invention]

According to the present invention, it is possible to further suppress the rebound of the container after being flattened in the axial direction than in the past, and it is also possible to provide a spiral structure cylindrical portion having excellent symmetry and excellent appearance, and to easily flatten the container with a small force.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 10.
As shown in FIG. 1, the container 1 of the present embodiment includes a main body tube portion 2. The container 1 of the present embodiment also includes a container bottom portion 3 and a container opening portion 4. The main body tubular portion 2 is formed into a tubular shape whose both ends in the axial direction (the vertical direction in the first figure) are opened. The container bottom 3 is formed in a bottomed cylindrical shape and is connected to the first axial end (lower end in the first figure) of the main body cylindrical portion 2 in the axial direction. The container bottom 3 is an opening that closes the first end of the main body cylindrical portion 2.

The container opening portion 4 is formed in a cylindrical shape and is connected to the second end (the upper end in the first figure) of the main body cylindrical portion 2 in the axial direction. A lid (not shown) such as a detachable cap or the like is attached to the container opening 4. The container opening portion 4 of this embodiment is formed in a cylindrical shape having a smaller diameter than the annular portion 5 or the spiral structure cylindrical portion 6 of the container bottom portion 3 or the main body cylindrical portion 2 described later.

The main body tubular portion 2 includes a plurality of annular portions 5 and a spiral structure tubular portion 6.
The ring portion 5 is formed in a ring shape. The annular portion 5 may be formed into a circular ring shape as viewed in the axial direction, but in the present embodiment, a polygonal ring shape is formed. The number of the ring portions 5 may be two or more. The number of the annular portions 5 in this embodiment is three. The three annular portions 5 are arranged in the axial direction of the main body tubular portion 2 at intervals. Although the three annular portions 5 are arranged at equal intervals in the example in the figure, they may be arranged at different intervals, for example. In the following description, the two annular portions 5 positioned at both axial ends of the main body tube portion 2 are referred to as end annular portions 11 and 12, and the annular portions positioned between the two end annular portions 11 and 12 are referred to. 5 is the middle ring part 13.

The strength of each annular portion 5 in the axial direction is higher than that of the spiral structure cylindrical portion 6 described later. That is, the durability (deformation difficulty) of the annular portion 5 when an external force acts in the axial direction is higher than that of the spiral structure cylindrical portion 6.
In addition, the strength of each annular portion 5 in a direction orthogonal to the axial direction (radial direction) may be higher than that of the spiral structure cylindrical portion 6. That is, the durability of the annular portion 5 when an external force acts in the radial direction may be higher than that of the spiral structure cylindrical portion 6.

The technique of setting the annular portion 5 to have a higher strength than the spirally structured cylindrical portion 6 is to provide, for example, a structure in which the cross section of the annular portion 5 including the axis A1 of the main body cylindrical portion 2 is curved or uneven, or the thickness of the annular portion 5 ( The thickness in the radial direction may be larger than that of the spiral structure cylindrical portion 6 and may be arbitrary. The annular portion 5 of the present embodiment includes the uneven structure portion 14 as shown in Figs. 2A, 2B, and 2C. The uneven structure portion 14 may be formed in a U-shaped or V-shaped cross section including the axis A1. The concave-convex structure portion 14 forming a U-shaped or V-shaped cross section may be formed in a concave shape that is recessed inward in the radial direction when viewed from the container 1 side as illustrated in FIGS. 2A, 2B, and 2C. In addition, the uneven structure portion 14 may be formed in a convex shape protruding outward in the radial direction when viewed from the outside of the container 1, for example.
The annular portion 5 includes the uneven structure portion 14, whereby the strength of the annular portion 5 can be increased. The shape of the uneven structure portion 14 is not limited to a U-shaped cross-section and a V-shaped cross-section, and may be any shape such as a cross-sectional S-shape.

The diameters of the three annular portions 5 may be equal to each other, for example. In addition, the diameter size of the ring portion 5 of one of the three ring portions 5 may be different from the diameter size of the two ring portions 5 apart from each other. In the present embodiment, among the three annular portions 5, the diameters of two annular portions 5 adjacent to each other in the axial direction are different from each other.

In the specific description, the diameter dimension of the intermediate ring portion 13 (first annular portion) is the diameter dimension of the two end ring portions 11 and 12 (second annular portion) adjacent to the intermediate ring portion 13 respectively. small. The diameter of the upper end ring portion 11 (one end ring portion) on the container opening portion 4 side of the two end ring portions 11 and 12 is smaller than the lower end of the container bottom portion 3 side. The annular portion 12 (the other end annular portion) has a small diameter. That is, in the present embodiment, among the three annular portions 5, the diameter dimension of the annular portion 13 is the smallest in the middle, and the diameter dimension of the lower end annular portion 12 is the largest.

When the diameters of the upper end annular portion 11 and the container opening portion 4 are equal to each other, the upper end annular portion 11 may be directly connected to the container opening portion 4. In this embodiment, as shown in FIG. 1, the diameter dimension of the container opening portion 4 is smaller than the diameter dimension of the upper end annular portion 11. Therefore, between the upper end annular portion 11 and the container opening portion 4, an upper insertion tube portion 41 described later is provided.
The diameters of the lower end annular portion 12 and the container bottom portion 3 may be different from each other, but the present embodiment is equal to each other. Therefore, the container bottom portion 3 may be directly connected to the lower end ring portion 12. In the present embodiment, a lower-side insertion tube portion 42 described below is provided between the lower-side end ring portion 12 and the container bottom portion 3.

The diameter dimension of the halfway ring part 13 and the upper end ring part 11 may be set so that the halfway ring part 13 may pass through the inside of the upper end ring part 11 without being caught, for example. In the present embodiment, the diameter dimension of the middle ring portion 13 and the upper end ring portion 11 is set so that the middle ring portion 13 fits (hooks) inside the upper end ring portion 11.

The diameters of the upper end annular portion 11 and the lower end annular portion 12 may be set such that the upper end annular portion 11 passes through the inside of the lower end annular portion 12 without being caught. In this embodiment, the diameter dimension of the upper end annular part 11 and the lower end annular part 12 is set so that the upper end annular part 11 fits (hooks) inside the lower end annular part 12.
In addition, the diameter dimension of the halfway ring part 13 and the lower end ring part 12 of this embodiment is set so that the halfway ring part 13 may pass through the inside of the lower end ring part 12 without hooking.

The spiral structure cylindrical portion 6 is disposed between two annular portions 5 adjacent to the main body cylindrical portion 2 in the axial direction. In the present embodiment, one of the spiral structure cylindrical portion 6 is disposed between the intermediate annular portion 13 and the upper end annular portion 11, and between the intermediate annular portion 13 and the lower end annular portion 12. That is, the main body tube portion 2 of the present embodiment includes two spiral structure tube portions 6 (an upper spiral structure tube portion 21 and a lower spiral structure tube portion 22).

Each spiral structure cylindrical portion 6 rotates the two annular portions 5 located on both sides in the axial direction relative to the axis A1 of the main body cylindrical portion 2 (twisting the spiral structure cylindrical portion 6 around the axis A1), This folds the two annular portions 5 toward each other in the axial direction (see FIGS. 6 to 10). Further, each spiral structure cylindrical portion 6 is folded into one of two annular portions 5 positioned on both sides thereof.

As shown in FIGS. 1, 3, and 4, each spiral structure cylindrical portion 6 has a plurality of inclined straight lines 23 and a plurality of diagonal straight lines 24.
The oblique straight line 23 extends obliquely in the circumferential direction of the spiral structure cylindrical portion 6 with respect to the axial direction to connect the two annular portions 5 positioned on both sides of the spiral structure cylindrical portion 6 with each other. The oblique straight line 23 forms a mountain fold line when viewed from the outside of the container 1. The plurality of inclined straight lines 23 are inclined at the same angle as each other with respect to the axial direction, and are arranged in the peripheral direction at approximately equal intervals. Here, "the plurality of inclined straight lines 23 are arranged at substantially equal intervals" means that in addition to the plurality of inclined straight lines 23 that are closely arranged at equal intervals, the number of oblique straight lines 23 is strictly determined in accordance with the process or limitation of the manufacturing or design of the container 1 or the like. A plurality of inclined straight lines 23 are arranged in a state of being deviated at an interval.

One end 23A and the other end 23B of the inclined straight line 23 are two annular portions 5 connected to the spiral structure cylindrical portion 6 on both sides, respectively. In this embodiment, one end 23A or the other end 23B of the inclined straight line 23 is a corner portion connected to the annular portion 5 having a polygonal shape. Therefore, the ring-shaped portion 5 of this embodiment is a ring having a substantially regular polygonal shape (see, for example, FIG. 5).

The diagonal straight line 24 is a method of connecting the diagonals of the rectangles defined by the connecting lines 25 and 26 of the spiral structure cylindrical portion 6 and the two annular portions 5 by two inclined straight lines 23 adjacent to each other in the peripheral direction. It extends obliquely with respect to the axial direction at an angle larger than the inclined straight line 23. The diagonal straight line 24 forms a valley fold line when viewed from the outside of the container 1. The plural diagonal straight lines 24 are inclined at the same angle with respect to the axial direction as the inclined straight lines 23, and are arranged in the surrounding direction at approximately equal intervals.

Thereby, the spiral structure cylindrical part 6 arranges the inclined straight line 23 and the diagonal straight line 24 alternately in a peripheral direction. That is, the spiral structure cylinders 6 are alternately arranged in the peripheral direction: the inclined straight line 23, the diagonal straight line 24, and the triangular plate-shaped first plate-shaped component 27 divided by the one connecting line 25, and the inclined straight line 23 and the diagonal The triangular plate-shaped second plate-shaped component 28 defined by the straight line 24 and the other connection line 26 is formed.
The outer region formed by the spiral structure cylindrical portion 6 of the first plate-shaped component 27 and the second plate-shaped component 28 located on both sides of the inclined straight line 23 is a convex surface that protrudes outward in the radial direction of the spiral structure cylindrical portion 6. On the other hand, the outer area of the spiral structure cylindrical portion 6 formed by the first plate-shaped component 27 and the second plate-shaped component 28 on both sides of the diagonal straight line 24 is formed in a radial direction toward the spiral structure cylindrical portion 6. Inner concave surface.

The spiral structure cylindrical portion 6 is shown in FIG. 5. The torsion angle θ from one end 23A to the other end 23B of the inclined straight line 23 in the circumferential direction of the spiral structure cylindrical portion 6 is theoretically defined by the following [Formula 1]. The twist angle θ ₀ is set. The torsion angles θ, θ ₀ are angles from the one end 23A of the inclined straight line 23 to the other end 23B with the axis A1 of the spiral structure cylindrical portion 6 (container 1) as the center.

In [Expression 1], r is a radius of the first annular portion 5 (for example, the annular portion 5 having a small diameter) among the two annular portions 5 located on both sides of the spiral structure cylindrical portion 6. R is the radius of the second annular portion 5 (for example, the annular portion 5 having a large diameter) among the two annular portions 5 located on both sides of the spiral structure cylindrical portion 6. In addition, n is the number of inclined straight lines 23 of the spiral structure cylindrical portion 6. In addition, h is the length of the axially structured cylindrical portion 6.
The theoretical torsional angle θ ₀ obtained by the above formula is a condition for the container 1 to have a foldable spiral structure cylindrical portion 6 when the wall thickness is not present.

In addition, the spiral structure cylindrical portion 6 is only required to set the twist angle θ to a theoretical twist angle θ ₀ or more (the theoretical twist angle θ ₀ or more), and it is more preferable to set the twist angle θ to a theoretical value. The torsional angle θ _{0 is} larger than the theoretical torsional angle θ ₀ . The twist angle θ may be set to, for example, four times or less the theoretical twist angle θ ₀ .
Setting the twist angle θ of the spiral structure cylindrical portion 6 to a theoretical twist angle θ ₀ or more means that in the spiral structure cylindrical portion 6, the first plate-like component 27 and the first An angle (hereinafter, referred to as a surface angle) formed by the two plate-like modules 28 on the outer surface side of the spiral structure cylindrical portion 6 becomes smaller. The torsional angle θ is set to be more than one time of the theoretical torsional angle θ ₀ , so that the surface angle can be reduced, and the container 1 can be crushed with a small force. In addition, when the torsional angle θ is set to be 4 times or less the theoretical torsional angle θ ₀ , the design or production of the spiral structure tube portion becomes easy.

The lengths of the two spiral structure tube portions 6 arranged in the axial direction may be different, for example, and this embodiment is equivalent to that shown in FIG. 1. In addition, although the number of inclined straight lines 23 of the spiral structure cylindrical portion 6 is different between the two spiral structure cylindrical portions 6, for example, the present embodiment is equal to each other. Although the number of the inclined straight lines 23 of the spiral structure cylindrical portion 6 is arbitrary, in the present embodiment, twelve are formed to increase the volume of the container 1. The connection position of the inclined straight line 23 of the spiral structure cylindrical portion 6 with respect to the intermediate portion 13 is, for example, between two spiral structure cylindrical portions 6 (the upper spiral structure cylindrical portion 21 and the lower spiral structure cylindrical portion 22). They are deviated from each other in the peripheral direction, but this embodiment is consistent with each other.

In the present embodiment, the inclined straight lines 23 of the two spiral structure cylindrical portions 6 adjacent to each other in the axial direction are inclined opposite to each other with respect to the axial direction. That is, the two spiral structure cylindrical portions 6 adjacent to each other in the axial direction are reverse spiral structures in which the inclined straight lines 23 are arranged in a zigzag shape in the axial direction.

The main body tube portion 2 of the present embodiment further includes an insertion tube portion 7. The insertion tube portion 7 is connected to the end ring portions 11 and 12 (second ring portion) and is formed at a position adjacent to the opposite side of the spiral structure tube portion 6. At least the folded spiral structure cylindrical portion 6 is inserted into the insertion cylindrical portion 7. After the spiral structure cylindrical portion 6 is folded, the insertion cylindrical portion 7 of this embodiment can also be accessed through the intermediate annular portion 13 (first annular portion) inside the end annular portions 11 and 12 (second annular portion). The insertion tube portion 7 may have a strength that does not deform inside the container 1 even when an external force acts from the outside of the main body tube portion 2 so that the helical structure tube portion 6 and the intermediate ring portion 13 can enter. In particular, the strength of the axially inserted cylindrical portion 7 is preferably higher than the strength of the spirally structured cylindrical portion 6.

In order to increase the strength of the insertion tube portion 7 more than the spiral structure tube portion 6, for example, a structure is provided in which the cross section of the insertion tube portion 7 including the axis A1 of the main body tube portion 2 is uneven, so that the thickness of the insertion tube portion 7 An arbitrary technique such as making it larger than the spiral structure tubular portion 6.

The insertion tube portion 7 of this embodiment includes an upper insertion tube portion 41 formed by being connected to the upper end ring portion 11 and a lower insertion tube portion 42 formed by being connected to the lower end ring portion 12.
The upper insertion tube portion 41 is disposed between the upper end annular portion 11 and the container opening portion 4. In this embodiment, the diameter dimension of the container opening portion 4 is smaller than the diameter dimension of the upper end annular portion 11. Therefore, the upper insertion cylindrical portion 41 is formed into a cylindrical shape having a smaller diameter as it goes from the upper end annular portion 11 toward the container opening portion 4.

Although the outer surface of the upper-side insertion tube portion 41 has a shape such as a conical surface such as a truncated cone, this embodiment has a shape such as an outer surface of a hemisphere. In addition, in order to improve the strength, the tube portion 41 is inserted on the upper side of the present embodiment, and a plurality of mountain fold lines 43 are formed as viewed from the outside of the container 1. A plurality of mountain fold lines 43 are arranged to divide the upper side insertion tube portion 41 into a plurality of plate-like components 44. The arrangement pattern of the plurality of mountain fold lines 43 can be arbitrarily arranged. In the present embodiment, a plurality of mountain fold lines 43 are arranged so that the plurality of plate-shaped components 44 are all triangular.

Although the lower insertion tube portion 42 may form, for example, a part of the container bottom portion 3, the present embodiment will describe a configuration different from the container bottom portion 3. The lower insertion tube portion 42 is disposed between the lower end annular portion 12 and the container bottom portion 3. In this embodiment, the diameters of the lower end annular portion 12 and the container bottom portion 3 are equal to each other. Therefore, the lower insertion tube portion 42 is formed into a tube shape with a constant diameter dimension.

The lower insertion tube portion 42 may be formed in a cylindrical shape, for example. In order to improve the strength of the lower insertion tube portion 42 of this embodiment, a plurality of mountain fold lines 45 are formed as viewed from the outside of the container 1. The plurality of mountain fold lines 45 may be arranged so as to divide at least the lower side insertion tube portion 42 into a plurality of plate-like components 46. The mountain fold line 45 of the lower insertion tube portion 42 of the present embodiment is a tube portion formed so that the lower insertion tube portion 42 has a polygonal shape.
In addition, the lower insertion tube portion 42 of the present embodiment has a concave-convex structure portion 47 for improving the strength of the lower insertion tube portion 42 in the same manner as the annular portion 5 described above. The uneven structure portion 47 may be formed at an arbitrary position in the axial direction of the lower insertion tube portion 42. In the present embodiment, the uneven structure portion 47 is a portion that forms a connection with the container bottom 3.

Next, a method of folding (squeezing and reducing) the container 1 of this embodiment will be described. When folding the container 1 of this embodiment, it is sufficient to rotate the two ring-shaped portions 5 located on both sides of each of the spiral structure tube portions 6 relative to the axis A1 of the main body tube portion 2, that is, to twist each spiral structure tube. Part 6 is sufficient. For example, when twisting the upper spiral structure cylindrical portion 21, the planar display of the upper spiral structure cylindrical portion 21 is viewed from the container opening portion 4 side, as long as the upper end annular portion 11 is rotated around the right side relative to the middle annular portion 13 . The lower spiral structure cylindrical portion 22 may be twisted in a direction opposite to the upper spiral structure cylindrical portion 21.
Hereinafter, referring to FIGS. 6 to 10, the folding description of the upper spiral structure cylindrical portion 21 will be mainly referred to.

When the upper spiral structure cylindrical portion 21 is twisted, the upper spiral structure cylindrical portion 21 is such that the surface angle of the first plate-shaped component 27 and the second plate-shaped component 28 adjacent to each other in the peripheral direction becomes smaller, even if the first plate-shaped component 27 and the second plate-like component 28 are folded overlapping each other. When the upper spiral structure cylindrical portion 21 is twisted from the initial state shown in FIG. 6, as shown in FIG. 7, the upper spiral structure cylindrical portion 21 is bent toward the radially inner side at a midway portion in the axial direction. In FIG. 7, reference numeral 29 denotes a curved portion of the upper spiral structure cylindrical portion 21. When the upper spiral structure cylindrical portion 21 is twisted, the two annular portions 5 (the upper end annular portion 11 and the intermediate annular portion 13) located on both sides of the upper spiral structure cylindrical portion 21 are the axes of the main body cylindrical portion 2. Approaching each other.

When the upper spiral structure cylindrical portion 21 is further twisted from the state shown in FIG. 7, as shown in FIG. 8, the upper spiral structure cylindrical portion 21 is folded so that at least a part of the upper spiral structure cylindrical portion 21 enters the inner side of the upper end annular portion 11 (one annular portion). .
In specific description, when the upper spiral structure cylindrical portion 21 is twisted, the upper spiral structure cylindrical portion 21 has a force acting by reversing the hinge when the boundary between the upper spiral structure cylindrical portion 21 and the upper end annular portion 11 is reversed. The so-called jump phenomenon of the structural tube portion 21 occurs. In other words, the upper spiral structure cylindrical portion 21 is folded back so that the curved portion 29 of the upper spiral structure cylindrical portion 21 enters or passes through the upper end annular portion 11. As a result, at least a part of the upper spiral structure cylindrical portion 21 enters the inner side of the upper end annular portion 11. Then, a part of the upper spiral structure cylindrical portion 21 is inserted into the upper insertion cylindrical portion 41. The folded-back upper spiral structure tubular portion 21 is the middle spiral portion 13 in the direction in which the annular portion 13 moves relative to the upper end annular portion 11 (upward in FIG. 8) when the upper spiral structure cylindrical portion 21 is folded. The ring-shaped portion 11 is pushed toward the upper end.

When the upper spiral structure cylindrical portion 21 is further twisted and folded from the state shown in FIG. 8 (or an external force is applied to the container 1 so that the annular portion 13 (the other annular portion) is closer to the upper end annular portion 11 halfway), The halfway portion 13 is arranged so as to enter the inside of the upper end ring portion 11 as shown in FIG. 9, or passes through the inside of the upper end ring portion 11 as shown in FIG. 10. In the state shown in Figs. 9 and 10, the ring-shaped portion 13 is fitted (hook) on the inside of the ring-shaped portion 11 on the upper side. The state shown in FIG. 10 is that the substantially entire upper spiral structure cylindrical portion 21 and the ring-shaped portion 13 halfway into the upper insertion cylindrical portion 41.
As described above, the folding of the upper spiral structure cylindrical portion 21 is ended.

The lower spiral structure cylindrical portion 22 can be folded similarly to the above-mentioned upper spiral structure cylindrical portion 21. However, in a state where the lower spiral structure cylindrical portion 22 is folded, a part or the whole of the lower spiral structure cylindrical portion 22 enters the inside of the lower end annular portion 12 or enters the lower portion through the inside of the lower end annular portion 12. The side is inserted into the tube portion 42.
In addition, in a state where both the upper spiral structure cylindrical portion 21 and the lower spiral structure cylindrical portion 22 are folded, at least one of the upper end annular portion 11, the upper spiral structure cylindrical portion 21, and the halfway annular portion 13 can enter the lower side. The cylindrical portion 42 is inserted inside or below the end ring portion 12. In addition, the upper end ring portion 11 can be fitted (hook) on the inside of the lower end ring portion 12.

As described above, the container 1 of this embodiment is folded at least at least a part of the spiral structure cylindrical portion 6 into the annular portion 5 of one of the two annular portions 5 located on both sides of the spiral structure cylindrical portion 6 Inside. The folded spiral structure tube portion 6 is folded back inside the main body tube portion 2 so as to not only suppress rebound and stabilize it, but also allow the folded spiral structure tube portion 6 to enter and hook on the inside of the one annular portion 5 described above. . Thereby, the folded spiral structure cylindrical part 6 can be hold | maintained inside the said one annular part 5. Therefore, it is possible to further suppress the spring-back after the container 1 is crushed in the axial direction as compared with the past.

In the container 1 of the present embodiment, the torsion angle θ of the spiral structure cylindrical portion 6 is set to be equal to or greater than the theoretical torsional angle θ ₀ (theoretical torsional angle θ ₀ or more) defined by [Expression 1]. Thereby, in the spiral structure cylindrical part 6, the surface angle of the 1st plate-shaped component 27 and the 2nd plate-shaped component 28 adjacent in the peripheral direction can be made small. By reducing the surface angle of the spiral structure cylindrical portion 6, even if the inclined straight lines 23 of the spiral structure cylindrical portion 6 are arranged at approximately equal intervals, the force (torsion force) required for folding of the spiral structure cylindrical portion 6 can be reduced. Therefore, the container 1 of this embodiment not only has the helical structure cylindrical portion 6 which is excellent in symmetry and is excellent in appearance, but also can easily crush the container with a small force.

When the torsion angle θ is set to 4 times or less the theoretical torsion angle θ ₀ in the container 1 of the present embodiment, it is possible to prevent the surface angle of the spiral structure cylindrical portion 6 from becoming excessively small (for example, less than 80 degrees). ). The surface angle of the spiral structure cylindrical portion 6 becomes too small, and it is difficult to manufacture the container 1 by molding (resin molding). However, the container 1 of this embodiment can prevent the surface angle of the spiral structure cylindrical portion 6 from becoming excessively small. Therefore, the container 1 can be easily manufactured by forming it.

Moreover, in the container 1 of the present embodiment, the strength of the two annular portions 5 positioned on both sides of the spiral structure cylindrical portion 6 is higher than the strength of the spiral structure cylindrical portion 6. Therefore, when the force for folding the spiral structure cylindrical portion 6 is applied to the axial direction (when the force that flattens the container 1 in the axial direction is applied to the container 1), the spiral structure cylindrical portion 6 precedes the annular portion 5. Deformation. This makes it possible to appropriately apply a force for folding the spiral structure cylindrical portion 6.

When the strength (particularly, the radial strength) of the annular portion 5 is higher than the strength of the spiral structure cylindrical portion 6, the spiral structure cylindrical portion 6 folded back inside the main body cylindrical portion 2 by being folded is hooked on the above. The state of the inside of the one annular portion 5 can prevent the one annular portion 5 from being deformed even if the spiral structure cylindrical portion 6 is pressed toward the inside (radial) of the one annular portion 5. Thereby, the folded-back spiral structure cylindrical part 6 can be reliably hold | maintained in the said one annular part 5. Therefore, rebound of the container 1 can be further suppressed.

In addition, the container 1 of the present embodiment is a folded upper spiral structure cylindrical portion 21, so that the middle annular portion 13 (first annular portion) is disposed inside the upper end annular portion 11 (second annular portion) or Similarly, the lower spiral structure cylindrical portion 22 is folded through the inner side of the upper end annular portion 11, and the midway annular portion 13 is disposed inside the lower end annular portion 12 (second annular portion) or through the lower side. The inside of the end ring portion 12. In addition, the two spiral structure tubular portions 6 may be folded, and the upper end annular portion 11 may be disposed inside the lower end annular portion 12 or passed through the lower end annular portion 12. Thereby, the container 1 can be made smaller and flattened.

In addition, the container 1 of the present embodiment is a folded upper spiral structure cylindrical portion 21, whereby the middle ring portion 13 (first ring portion) can be fitted (hook) on the upper end ring portion 11 (second ring) unit). Further, the two spiral structure tubular portions 6 may be folded, and the upper end ring portion 11 may be fitted (hook) on the inside of the lower end ring portion 12. This can reliably prevent the container 1 from rebounding after being crushed in the axial direction.

In the container 1 of the present embodiment, the spiral structure cylindrical portion 6 is folded, and a part or the whole of the spiral structure cylindrical portion 6 is inserted into the insertion cylindrical portion 7. Thereby, the container 1 can be further reduced in size.
In addition, at least a part of the folded spiral structure cylindrical portion 6 passes through the end ring portions 11 and 12 (the second annular portion) and enters the insertion cylindrical portion 7, so that the spiral structure cylindrical portion 6 can be folded back inside the main body cylindrical portion 2. The state remains stable. This can reliably prevent the container 1 from rebounding after being crushed in the axial direction.

In the container 1 of the present embodiment, the strength of the inserted tube portion 7 is higher than that of the spiral structure tube portion 6. Therefore, when the force for folding the spiral structure cylindrical portion 6 is applied in the axial direction, the spiral structure cylindrical portion 6 is deformed earlier than the insertion cylindrical portion 7. This makes it possible to appropriately apply a force for folding the spiral structure cylindrical portion 6. In addition, since the shape of the insertion tube portion 7 can be maintained when the spiral structure tube portion 6 is folded, a part or all of the folded spiral structure tube portion 6 can be more surely entered into the insertion tube portion 7. Therefore, rebound of the container 1 can be further suppressed.

Moreover, in the container 1 of this embodiment, the two spiral structure cylindrical portions 6 adjacent to each other in the axial direction have a reverse spiral structure, and the number of the spiral structure cylindrical portions 6 arranged in the axial direction is an even number (two). Therefore, with the axis A1 of the container 1 as the center, the two spiral structure tube portions 6 can be folded only by rotating the ring-shaped portion 13 in the same direction with respect to the two end ring-shaped portions 11 and 12. That is, the two endless ring portions 11 and 12 can be folded without rotating the two spiral structure tubular portions 6. Therefore, only by making the two end ring portions 11 and 12 close to each other in the axial direction, that is, by simply squeezing the container 1 in the axial direction, it is possible to easily fold the plurality of spiral structure cylinder portions 6.

[Second Embodiment]
Next, the second embodiment of the present invention will be described with reference to FIG. 11, focusing on differences from the first embodiment.

As shown in FIG. 11, the container 1D of the present embodiment includes a main body tube portion 2D similarly to the first embodiment. The container 1D of the present embodiment includes a container bottom 3 and a container opening 4 that are the same as those of the first embodiment.

The main body tubular portion 2D of this embodiment includes a plurality of annular portions 5 and a spiral structure tubular portion 6 similarly to the first embodiment.
The shape of the annular portion 5 when viewed in the axial direction may be the same as that of the first embodiment. Although the number of the ring portions 5 in the present embodiment is, for example, five or more, the number of the ring portions 5 in the present embodiment is four. The four annular portions 5 are arranged in the axial direction of the main body tubular portion 2D at equal or unequal intervals. In the following description, the two annular portions 5 positioned at both ends in the axial direction of the main body tube portion 2D are referred to as the end annular portions 11 and 12, and the two annular portions positioned between the two end annular portions 11 and 12 are referred to. The part 5 is a ring part 15D, 16D halfway.

Each of the annular portions 5 has a strength in the axial direction higher than that of the spiral structure cylindrical portion 6 as in the first embodiment. In addition, each of the annular portions 5 may have a strength in the radial direction higher than that of the spiral structure cylindrical portion 6 as in the first embodiment. The technique of increasing the strength of the annular portion 5 may be the same uneven structure portion 14 as in the first embodiment (see FIGS. 2A, 2B, and 2C).

At least one of the two axially adjacent halfway portions 15D and 16D is a spiral structure tube portion 6 (hereinafter, referred to as a middle portion spiral structure tube) folded between two intermediate halfway portions 15D and 16D. 30D) into the cylindrical shape. In the present embodiment, the upper halfway ring portion 15D (one halfway ring portion) of the two halfway ring portions 15D and 16D adjacent to each other in the axial direction located on the container opening portion 4 side has a spiral structure of a folded middle portion. A cylindrical shape that enters after the cylindrical portion 30D. That is, the length of the upper halfway portion 15D in the axial direction is longer than the lower halfway portion 16D (the other halfway portion) located on the container bottom 3 side with respect to the upper halfway portion 15D. The length of the upper mid-loop portion 15D is, for example, a length that is set such that the middle portion spiral structure tubular portion 30D of the upper mid-section ring portion 15D does not enter the upper spiral structure tubular portion 21 after being folded.

The diameters of the four annular portions 5 may be equal to each other, for example. In addition, among the four ring-shaped portions 5, only a part of the ring-shaped portions 5 may have different diameters from each other. In this embodiment, the diameters of the four annular portions 5 are different from each other.

In specific description, the diameter dimensions of the two intermediate ring portions 15D and 16D (first ring portions) are smaller than the diameter dimensions of the two end ring portions 11 and 12 (second ring portions). In addition, the upper halfway portion 15D (one halfway portion) is larger than the lower halfway portion 16D (the other halfway portion). In addition, similar to the first embodiment, the diameter dimension of the upper end ring portion 11 is smaller than the diameter dimension of the lower end ring portion 12. That is, in this embodiment, among the four ring-shaped portions 5, the diameter dimension of the lower middle ring portion 16D is the smallest, and the diameter dimension is based on the upper middle ring portion 15D, the upper end ring portion 11, and the lower end ring. The order of the shape portions 12 becomes larger.

The diameters of the upper halfway portion 15D and the lower halfway portion 16D can be set, for example, so that the lower halfway portion 16D can pass through the inside of the upper halfway portion 15D without hooking. For example, the lower portion The side halfway portion 16D is fitted (hook) on the upper side halfway portion 15D. In addition, the diameters of the upper mid-ring portion 15D and the upper-end annular portion 11 may be set such that the upper mid-ring portion 15D passes through the inner side of the upper-end annular portion 11 without hooking, for example, the upper side may also be set. The middle portion 15D is fitted (hook) on the inside of the upper end ring portion 11. The diameters of the upper end annular portion 11 and the lower end annular portion 12 are set in the same manner as in the first embodiment, and the upper end annular portion 11 is set to be fitted (hook) on the inside of the lower end annular portion 12.

The main body tube portion 2D of the present embodiment includes three spiral structure tube portions 6 (the upper spiral structure tube portion 21, the lower spiral structure tube portion 22, and the intermediate portion spiral structure tube portion 30D). The structure of each spiral structure cylinder part 6 is the same as that of the first embodiment. The upper spiral structure cylindrical portion 21 is disposed between the upper end ring portion 11 and the upper half ring portion 15D. The lower spiral structure cylindrical portion 22 is disposed between the lower end annular portion 12 and the lower mid-ring portion 16D. The intermediate portion spiral structure cylindrical portion 30D is disposed between the upper halfway annular portion 15D and the lower halfway annular portion 16D. The three spiral structure tube portions 6 have the same reverse spiral structure as the first embodiment.

The main body tube portion 2D of this embodiment includes two insertion tube portions 7 (an upper insertion tube portion 41D and a lower insertion tube portion 42) similar to the first embodiment. The upper insertion tube portion 41D of this embodiment has the same configuration as that of the first embodiment, except that a shape of a conical surface such as a truncated cone is formed on the outer surface and the axial dimension is different. The lower insertion tube portion 42 of this embodiment has the same configuration as that of the first embodiment except for the dimension in the axial direction.

The container 1D according to the present embodiment can be made smaller and flattened by the same folding method as the first embodiment.
That is, when the container 1D of the present embodiment is folded, the spiral structure tubular portions 6 may be twisted in the same manner as in the first embodiment. For example, when twisting the middle portion spiral structure tube portion 30D, the middle portion spiral structure tube portion 30D is shown in a plan view when viewed from the container opening portion 4 side, and the upper half ring portion 15D is rightward relative to the lower half ring portion 16D. Just turn it around. The upper spiral structure cylindrical portion 21 or the lower spiral structure cylindrical portion 22 may be twisted in a direction opposite to the middle spiral structure cylindrical portion 30D.

When twisting and folding the upper spiral structure tubular portion 21, as in the case of the first embodiment, a part or all of the upper spiral structure tubular portion 21 or the upper middle ring portion 15D may be inserted into the upper end ring portion 11 or The upper side is inserted into the tube portion 41D. In addition, the upper ring portion 15D may be fitted (hook) on the inside of the upper end ring portion 11.
When twisting and folding the middle spiral structure tube portion 30D, similarly to the case of the upper spiral structure tube portion 21, a part or the whole of the middle spiral structure tube portion 30D or the lower halfway ring portion 16D can enter the upper halfway ring portion. 15D inside. In addition, the lower halfway portion 16D may be fitted (hook) on the inside of the upper halfway portion 15D.

When twisting and folding the lower spiral structure cylindrical portion 22, as in the case of the first embodiment, a part or the whole of the lower spiral structure cylindrical portion 22 can be inserted into the inner side of the lower end annular portion 12 or inserted into the lower side and inserted into the cylindrical portion. 42.
Further, in a state where all three spiral structure tubular portions 6 are folded, the upper end annular portion 11, the upper spiral structure tubular portion 21, the upper halfway annular portion 15D, the middle portion spirally structured tubular portion 30D, and the lower halfway may be made. At least one of the ring-shaped portions 16D enters the inside or the lower-side insertion tube portion 42 of the lower-side ring-shaped portion 12. In addition, the upper end ring portion 11 may be fitted (hook) on the inside of the lower end ring portion 12.

The container 1D according to the present embodiment achieves the same effects as the first embodiment.
In addition, according to the container 1D of the present embodiment, a part or the whole of the middle portion spiral structure cylindrical portion 30D enters the upper halfway ring portion 15D in a state where the middle portion spiral structure cylindrical portion 30D is folded. Thereby, even if the container 1D has three or more spiral structure cylindrical portions 6, the container 1D can be flattened small.
In addition, when the folded middle portion spiral structure cylindrical portion 30D is brought into the upper ring-shaped middle portion 15D formed in a cylindrical shape, the middle portion spiral structure cylindrical portion 30D can be stably maintained in a state of being folded back inside the main body cylindrical portion 2D. This can effectively prevent the container 1D from rebounding after its axial crushing.

In addition, according to the container 1D of the present embodiment, in the state where the cylindrical portion 30D of the spiral structure is folded at the intermediate portion, the lower mid-ring portion 16D can be arranged inside the upper mid-ring portion 15D. Thereby, even if the container 1D has three or more spiral structure cylindrical portions 6, the container 1D can be flattened small.

[Third embodiment]
Next, a third embodiment of the present invention will be described with reference to Figs. 12 and 13, focusing on differences from the first embodiment.

As shown in FIG. 12, the container 1E according to the present embodiment includes a main body tube portion 2E similarly to the first embodiment. The container 1E of the present embodiment includes a container bottom 3 and a container opening 4 that are the same as those of the first embodiment.

The main body tubular portion 2E of this embodiment includes a plurality of annular portions 5 and a spiral structure tubular portion 6 similarly to the first embodiment.
The shape of the annular portion 5 when viewed in the axial direction may be the same as that of the first embodiment. The number of the ring portions 5 may be at least two or more, but this embodiment is four. The four annular portions 5 are arranged at equal or unequal intervals in the axial direction of the main body tubular portion 2E. In the following description, the two annular portions 5 positioned at both ends in the axial direction of the main body cylindrical portion 2E are referred to as the end annular portions 11 and 12, and the two annular portions positioned between the two end annular portions 11 and 12 are referred to. The part 5 is a ring part 15E, 16E halfway.

Each of the annular portions 5 has a strength in the axial direction higher than that of the spiral structure cylindrical portion 6 as in the first embodiment. The technique of increasing the strength of the annular portion 5 may be the same uneven structure portion 14 as in the first embodiment (see FIGS. 2A, 2B, and 2C).

The diameters of the four annular portions 5 may be different from each other, for example. In addition, among the four ring-shaped portions 5, only a part of the ring-shaped portions 5 may have different diameters from each other. In this embodiment, the diameters of the four annular portions 5 are different from each other.

The main body cylindrical portion 2E of this embodiment includes three spiral structure cylindrical portions 6 (an upper spiral structure cylindrical portion 31E, an intermediate spiral structure cylindrical portion 32E, and a lower spiral structure cylindrical portion 33E). The main structure of each spiral structure cylinder part 6 is the same as that of the first embodiment. The upper spiral structure cylindrical portion 31E is disposed between the upper end annular portion 11 and the upper midway annular portion 15E. The lower spiral structure cylindrical portion 33E is disposed between the lower end annular portion 12 and the lower intermediate annular portion 16E. The middle portion spiral structure cylindrical portion 32E is disposed between the upper halfway annular portion 15E and the lower halfway annular portion 16E. The three spiral structure tube portions 6 have the same reverse spiral structure as the first embodiment.

The spiral structure cylindrical portion 6 according to the present embodiment includes an annular flexible portion 35 as shown in Figs. 12 and 13. The ring-shaped easy-to-bend part 35 has a function as a part which bends the spiral structure cylindrical part 6 inside in the radial direction when the spiral structure cylindrical part 6 is folded.

The annular easy-to-bend portion 35 is formed in a ring shape extending in the peripheral direction in the middle portion in the axial direction of the spiral structure cylindrical portion 6. That is, the annular flexible portion 35 may be formed at least in the axial direction at a position away from the two annular portions 5 located on both sides of the spiral structure cylindrical portion 6. Although the annular flexible portion 35 is plurally arranged in the axial direction in the same spiral structure cylindrical portion 6, for example, it is preferable to form only one of the same spiral structure cylindrical portion 6.

For example, when the diameters of the two annular portions 5 located on both sides of the spiral structure cylindrical portion 6 are approximately the same, the annular flexible portion 35 is formed at the approximate center (middle portion) of the spiral structure cylindrical portion 6 formed in the axial direction. ) Is better. When the diameters of the two annular portions 5 located on both sides of the spiral structure cylindrical portion 6 are substantially different, the annular flexible portion 35 is a spiral structure cylinder having the smallest diameter formed in the axial spiral structure cylindrical portion 6. The portion 6 is preferably. Here, the “diameter of the spiral structure cylindrical portion 6” means, for example, the diameter of an inscribed circle of a plurality of diagonal straight lines 24 (valley lines) constituting the spiral structure cylindrical portion 6.

Although the ring-shaped flexible portion 35 only needs to have at least one of the three spiral structure cylindrical portions 6, the present embodiment includes all (three) spiral structure cylindrical portions 6. The formation positions of the axially flexible portions 35 in the axial direction may be different from each other among the three spiral structure cylindrical portions 6, or may be equal to each other.
In this embodiment, the ring-shaped flexible portion 35 is formed at a substantially center (middle portion) in the axial direction of the upper spiral structure tube portion 31E, that is, formed in the axial direction from the upper end ring portion 11 and the upper half ring portion 15E. The distances are approximately equal. Further, the ring-shaped flexible portion 35 is formed at a substantially center (intermediate portion) in the axial direction of the spiral structure tube portion 32E of the middle portion, that is, formed in the ring portion 15E and the ring portion 16E halfway from the upper side in the axial direction. Distances are approximately equal. The ring-shaped flexible portion 35 is formed at the approximate center (middle portion) of the lower spiral structure cylindrical portion 33E in the axial direction, that is, formed in the axial direction from the lower end ring portion 12 and the lower half ring portion 16E. Distances are approximately equal.

The shape of the ring-shaped flexible portion 35 is arbitrary. For example, the ring-shaped flexible portion 35 may be formed in a curved shape in a cross section similar to the uneven structure portion 14 of the ring-shaped portion 5 including the axis A1. Or uneven shapes (for example, U-shaped cross section, V-shaped cross section, S-shaped cross section, concave shape, convex shape, uneven shape, etc.). Further, the ring-shaped flexible portion 35 may be formed into a shape of a mountain fold line or a valley fold line as viewed from the outside of the container 1E. The annular flexible portion 35 of the present embodiment is formed in a concave shape that is recessed toward the inside of the container 1E when viewed from the outside of the container 1E.

Although the annular flexible portion 35 may be formed to extend continuously in the peripheral direction, for example, the present embodiment is formed to extend intermittently in the peripheral direction. That is, the ring-shaped flexible portion 35 according to the present embodiment is configured by arranging a plurality of curved portion elements 36 in the peripheral direction. In the present embodiment, each curved portion element 36 has a shape that is recessed toward the inside of the container 1E.
Although the plurality of curved portion elements 36 are arranged in the peripheral direction without an interval, the present embodiment is arranged in the peripheral direction with an interval. The interval between the bent portion elements 36 adjacent to each other in the peripheral direction may be arbitrary.

The bent element 36 may be, for example, only a part of the plurality of plate-shaped members 27 and 28 constituting the spiral-shaped cylindrical portion 6 of the plate-shaped members 27 and 28 (for example, only the first plate-shaped member 27 and only the second plate-shaped member 28). The bent portion elements 36 of the present embodiment are all plate-like components 27 and 28 formed in the spiral structure cylindrical portion 6.

A bent portion element 36 may be formed, for example, in a plate-like component 27, 28. In addition, one curved portion element 36 is formed, for example, across three or more plate-like components 27 and 28 that are continuously arranged in the peripheral direction. Further, the one bent portion element 36 is, for example, a first plate-shaped component 27 and a second plate-shaped component 28 that can be formed on both sides of a diagonal straight line 24 (valley line). In the present embodiment, one curved portion element 36 is a first plate-shaped component 27 and a second plate-shaped component 28 formed on both sides of an inclined straight line 23 (a mountain folding line).

One curved portion element 36 may extend in the direction of the circumference of the spiral structure cylindrical portion 6, for example. In the present embodiment, one curved portion element 36 extends obliquely toward the axial direction of the spiral structure cylindrical portion 6 with respect to the surrounding direction. Specifically, the curved portion element 36 according to the present embodiment extends along the surfaces of the plate-like members 27 and 28 in a direction orthogonal to the inclined straight line 23. Further, the curved portion element 36 extends from the midpoint of the inclined straight line 23 to two diagonal straight lines 24 located on both sides of the diagonal straight line 24.

The width dimension of the ring-shaped flexible portion 35 or the bent portion element 36 can be arbitrarily set within a range where the ring-shaped flexible portion 35 acts. For example, the ring-shaped portion 5 (especially the uneven structure portion 14) of the axial direction of the container 1E can be set. ) The width dimension can be large or small. In this embodiment, the width dimension of the ring-shaped flexible portion 35 or the curved portion element 36 is the same as the width dimension of the ring portion 5. The above-mentioned “width dimension of the ring-shaped flexible portion 35 and the bending portion element 36” means the size of the ring-shaped flexible portion 35 in the axial direction of the container 1E, or along the faces of the plate-like components 27 and 28 toward and The size of the bending portion element 36 in a direction orthogonal to the extending direction of the bending portion element 36 (for example, a direction parallel to the inclined straight line 23).

The shape and configuration of the annular flexible portion 35 described above may be different between the three spiral structure cylindrical portions 6 or may be equal to each other.

The main body tube portion 2E of the present embodiment includes an insertion tube portion 7 similar to that of the first embodiment. The insertion tube portion 7 of this embodiment is only the upper insertion tube portion 41 similar to the first embodiment, and does not include the lower insertion tube portion 42 of the first embodiment (see FIG. 1). However, in the container 1E of this embodiment, a part or all of the container bottom portion 3 may have the same function as the lower side insertion tube portion 42 as in the first embodiment.

The container 1E of the present embodiment can be crushed small by the same folding method as the first embodiment.
That is, when the container 1E of the present embodiment is folded, it is only necessary to twist the spiral structure cylindrical portions 6 in the same manner as in the first embodiment. For example, when twisting the middle spiral structure cylindrical portion 32E, the planar display of the middle spiral structure cylindrical portion 32E is viewed from the container opening portion 4 side. As long as the upper middle circle portion is rotated to the right relative to the lower middle circle portion 16E, 15E is enough. The upper spiral structure cylindrical portion 31E or the lower spiral structure cylindrical portion 33E may be twisted in a direction opposite to the middle spiral structure cylindrical portion 32E.

When twisting and folding the upper spiral structure tubular portion 31E, as in the case of the first embodiment, a part of the upper spiral structure tubular portion 31E may be inserted into the upper end ring portion 11 and / or the upper halfway portion 15E, or The upper side is inserted into the tube portion 41.
In addition, in this embodiment, when the upper spiral structure cylindrical portion 31E is folded, a function such as the folding line of the ring-shaped flexible portion 35 of the upper spiral structure cylindrical portion 31E can be realized in advance. The upper spiral structure cylindrical portion 31E is on its axis. The midway portion can be simply and surely bent toward the radially inner side. Thereby, a state in which a part of the upper spiral structure cylindrical portion 31E enters the inside of the upper end annular portion 11 or the upper insertion portion 41 can be stabilized.

When twisting and folding the middle spiral structure cylindrical portion 32E, similarly to the case of the upper spiral structure cylindrical portion 31E, a part of the middle spiral structure cylindrical portion 32E can be inserted into the upper middle ring portion 15E and / or the lower middle ring portion. The inside of 16E.
In addition, in the present embodiment, when the intermediate spiral structure tube portion 32E is folded, a function such as the folding line of the ring-shaped easy-to-bend portion 35 of the intermediate spiral structure tube portion 32E can be realized in advance, and the intermediate spiral structure tube portion 32E It can be simply and surely bent toward the radially inner side in the middle part in the axial direction. Thereby, a state in which a part of the middle portion spiral structure cylindrical portion 32E enters the inside of the upper halfway portion 15 and / or the lower halfway portion 16E can be stabilized.
In addition, a state in which the axially upper portion of the spiral structure cylindrical portion 32E of the middle portion with the annular flexible portion 35 as a boundary enters the inner portion of the annular portion 15E on the upper side may be provided, and the annular flexible portion 35 may be provided. This is a state where the axially lower portion of the spiral structure cylindrical portion 32E in the middle portion of the boundary enters the inside of the annular portion 16E on the lower side, and such conditions can be stabilized.

When the lower spiral structure cylindrical portion 33E is twist-folded, as in the case of the first embodiment, a part of the lower spiral structure cylindrical portion 33E can be made to enter the lower middle ring portion 16E and / or the lower end ring portion 12 inside. , Or go to the bottom of the container 3.
In addition, in the present embodiment, when the lower spiral structure cylindrical portion 33E is folded, a function such as the folding line of the ring-shaped flexible portion 35 of the lower spiral structure cylindrical portion 33E is formed in advance, and the lower spiral structure cylindrical portion 33E is on its axis. The midway portion can be simply and surely bent toward the radially inner side. Thereby, a state in which a part of the lower spiral structure cylindrical portion 33E after folding is brought into the lower middle portion of the annular portion 16E and / or the lower end annular portion 12 or the container bottom portion 3 can be stabilized.

According to the container 1E of this embodiment, the same effect as that of the first embodiment is achieved.
In addition, according to the container 1E of the present embodiment, when the spiral structure cylindrical portion 6 is folded, the folding line of the loop-like flexible portion 35 can be stably folded. At the same time, the spiral structure cylindrical portion 6 can be stabilized after being folded. A part of the folded spiral structure cylindrical portion 6 enters a state of the annular portion 5 or the inserted cylindrical portion 7 (especially the upper inserted cylindrical portion 41) or the container bottom portion 3. This can effectively prevent the container 1E from rebounding after being crushed in the axial direction.

The structure of the third embodiment (for example, the ring-shaped flexible portion 35) can also be applied to the container 1D of the second embodiment, for example.

Although the present invention has been described in detail with reference to the three embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.

The container of the present invention is shown in FIG. 14, for example, and the inclined straight lines 23 of the two spirally structured cylindrical portions 6 adjacent to each other in the axial direction may be inclined in the same direction with respect to the axial direction. That is, the two spiral structure cylindrical portions 6 adjacent to each other in the axial direction may have a forward spiral structure in which the inclined straight lines 23 are inclined in the same direction with respect to the axial direction. The container 1F illustrated in FIG. 14 has two spiral structure tube portions 6 similar to the container 1 of the first embodiment, but it may also have three or more similar containers to the containers 1D and 1E of the second and third embodiments. Helical structure tube 6.
The container 1F exhibiting a helical spiral structure is capable of folding a plurality of spiral structure cylindrical portions 6 at the same time only by rotating the two end ring portions 11 and 12 relatively. Therefore, the container 1F can be flattened easily and small.

In the container of the present invention, the annular portion having a higher strength than the spiral structure cylindrical portion is an annular portion that enters the spiral structure cylindrical portion that is folded back at least only inside the main body cylindrical portion 2.

1, 1D, 1E, 1F‧‧‧ container

2, 2D, 2E‧‧‧ body tube

3‧‧‧ bottom of container

4‧‧‧ container opening

5‧‧‧ Ring

6‧‧‧ Spiral Structure Tube

7‧‧‧ Insert into the tube

11, 12‧‧‧ end ring

13, 15D, 16D, 15E, 16E

23‧‧‧ inclined straight

24‧‧‧ diagonal straight line

25, 26‧‧‧ cable

35‧‧‧ Ring-shaped flexible part

36‧‧‧ Bending element

A1‧‧‧ axis

Fig. 1 is a side view showing a container according to a first embodiment of the present invention.

Fig. 2A is an enlarged cross-sectional view showing an annular portion at the upper end of the container of Fig. 1.

FIG. 2B is an enlarged cross-sectional view showing the ring-shaped portion in the middle of the container of FIG. 1.

Fig. 2C is an enlarged cross-sectional view showing a ring-shaped portion at the lower end of the container of Fig. 1.

Fig. 3 is a fold line development view showing the upper spiral structure cylindrical portion of the container of Fig. 1.

Fig. 4 is a folded line development view showing a lower spiral structure cylindrical portion of the container of Fig. 1;

Fig. 5 is a diagram for explaining the twist angle θ of the spiral structure cylindrical portion of the container of Fig. 1.

Fig. 6 is a schematic view showing a process of folding a spiral structure tube in the container of Fig. 1.

Fig. 7 is a schematic view showing a process of folding the spiral structure tube in the container of Fig. 1.

Fig. 8 is a schematic view showing a process of folding the spiral structure tube in the container of Fig. 1.

Fig. 9 is a schematic diagram showing a process of folding the spiral structure tube in the container of Fig. 1.

Fig. 10 is a schematic diagram showing a process of folding the spiral structure tube in the container of Fig. 1.

Fig. 11 is a side view showing a container according to a second embodiment of the present invention.

Fig. 12 is a side view showing a container according to a third embodiment of the present invention.

Fig. 13 is a folded line development view showing a spiral structure cylindrical portion of the middle portion of the container of Fig. 12;

Fig. 14 is a side view showing an example of a container according to another embodiment of the present invention.

Claims (12)

A container is a container including a cylindrical main body tube portion, wherein the main body container includes a plurality of ring-shaped portions formed in a ring shape, and is arranged at intervals in the axial direction of the main body tube portion, and a spiral The structure tube portion is arranged between the two axially adjacent ring portions, and the two ring portions are relatively rotated around the axis of the main body tube portion, thereby folding the two ring portions. The helical structured tubular portions approach each other toward the axial direction, and the spiral structure cylindrical portion extends obliquely in a peripheral direction with respect to the axial direction to connect the two annular portions to each other, and becomes a mountain zigzag line when viewed from the outside of the container. A plurality of inclined straight lines arranged at approximately equal intervals, and extending obliquely at an angle larger than the inclined straight line with respect to the axial direction, connecting the two inclined straight lines adjacent to each other in the peripheral direction, and connecting the cylindrical portion and the spiral structure through the spiral structure. The diagonals of the quadrilaterals defined by the connecting lines of the two ring-shaped portions are each a plurality of diagonal straight lines which become valley fold lines as viewed from the outside of the container, and the cylindrical portion of the spiral structure is folded. At least a part of it enters the inside of any one of the annular portions, and the torsion angle from one end of the inclined straight line to the other end in the circumferential direction of the spiral structure cylindrical portion is to set a first annular shape among the two annular portions. The radius of the part is r, the radius of the second annular part is R, the number of the inclined straight lines is n, and the length of the axially-shaped spiral structure cylindrical part is h. The twist is defined by the following formula: Containers with an angle above θ ₀ . The container according to item 1 of the patent application scope, wherein the strength of the two annular portions in the axial direction is higher than that of the spiral structure cylindrical portion. The container according to item 1 or item 2 of the patent application scope, wherein the spiral structure cylindrical portion has a ring extending in a peripheral direction in an axial midway portion of the spiral structure cylindrical portion, and the spiral structure cylindrical portion is folded. It is a ring-shaped bendable part that is bent toward the inside in the radial direction. According to the container described in any one of claims 1 to 3 in the scope of patent application, wherein the diameter dimension of the first annular portion is smaller than the diameter dimension of the second annular portion, The spiral structure tubular portion is folded such that the first annular portion is disposed inside the second annular portion or passes through the second annular portion. The container according to item 4 of the patent application scope, wherein a diameter dimension of the two annular portions is set so that the first annular portion is fitted inside the annular portion. The container according to any one of claims 1 to 5 in the patent application scope, wherein the main body cylindrical portion is provided with a phase formed on the opposite side to the spiral structure cylindrical portion in the axial direction relative to the second annular portion. In the adjacent position, at least the inserted cylindrical portion of the spiral structure cylindrical portion that can be folded is accessible. According to the container of claim 6, the strength of the insertion tube portion in the axial direction is higher than that of the spiral structure tube portion. The container according to any one of claims 1 to 7 in the scope of patent application, wherein the container includes at least three of the ring portions, Making the diameter size of the two end ring portions located at both ends in the axial direction among the plurality of ring portions larger than the diameter size of the ring portion located halfway between the two end ring portions, One of the two end ring-shaped portions has a smaller diameter dimension than the other end ring-shaped portion. According to the container described in claim 8, the diameter dimension of the one end ring portion and the other end ring portion is set so that the one end ring portion is embedded in the other end. The inside of the ring part. For example, the container according to the eighth or ninth scope of the patent application, wherein the midway annular portion is arranged at least two in the axial direction at intervals, and two of the midway annular portions adjacent to the axial direction. One of the halfway annular portions has a tubular shape formed by folding and entering the spiral structure cylindrical portion located between the one and the other halfway annular portion. The container according to any one of claims 8 to 10 in the scope of the patent application, wherein the inclined straight lines of the two spiral structure cylindrical portions adjacent to the axial direction are opposite directions with respect to the axis. tilt. The container according to any one of claims 8 to 10 in the scope of the patent application, wherein the inclined straight lines of the two spiral structure cylindrical portions adjacent to the axial direction are in the same direction with respect to the axis tilt.