JP2004142786A - Round volume-reducing container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a round volume-reducing container, of which the trunk can be crushed safely and bent smoothly upon reducing the volume of the container by twisting its trunk. <P>SOLUTION: The round volume-reducing container comprises the trunk 13 having a circular section, and a bottom 14 closing the lower end of the trunk 13. Linear outward fold guides 20 and inward fold guides 30 are formed alternately at every a prescribed distance along the entire circumference of the trunk 13, where respective guides 20, 30 are located on a plurality of side faces formed on the trunk 13, which is twisted around the axis of the container to crush it. According to the container, the upper/lower ends of respective linear outward fold guides 20 are connected circumferentially via arc-shaped outward fold guides 40, and each inward fold guide 30 is sloped more than each linear outward fold guide 20 in a twisting direction by a prescribed angle of (θ2-θ1) with respect to a reference line B. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a round volume-reducing container having a round trunk section, and more particularly to a container having a configuration in which the trunk section is twisted and crushed.
[0002]
[Prior art]
[Patent Document 1] Japanese Utility Model Publication No. Hei 6-35123 As a conventional round volume reduction container of this type, for example, the one described in Patent Document 1 is known.
[0003]
This round volume reduction container is provided with a plurality of ridges and ridges alternately in the circumferential direction on the side of the trunk, and the ridges and ridges are relative to a reference line parallel to the central axis of the trunk side. It is inclined by the same angle in the twisting direction. When reducing the volume, hold the upper and lower ends, twist the barrel around the central axis, and bend the barrel into a mountain fold along the ridge and a valley fold along the recess. It was supposed to crush.
[0004]
[Problems to be solved by the invention]
However, in the container described in Patent Document 1 described above, both ends of the linear ridge are connected to one point on the circumference of the upper end and the lower end of the trunk portion, and a mountain formed along the ridge when twisted. There is a possibility that both ends of the bent portion are sharply broken at an acute angle and may injure fingers.
[0005]
Further, when twisted, the mountain fold bent portion and the valley fold bent portion are tilted in the twisting direction while being bent, but there is a problem that the mountain fold bent portion and the valley fold bent portion are not formed well.
[0006]
The reason is that the mountain fold bends are inclined in the torsional direction while maintaining a straight line, so that the adjacent mountain fold bends are in a twisted positional relationship, whereas conventionally the angle of inclination of the ridges is the inclination of the ridges. Since the angle is the same, when a valley fold bend is formed, the adjacent mountain fold bends become parallel and unreasonable deformation occurs in both the mountain fold bend and the valley fold bend.
[0007]
The present invention provides a round volume reduction container that can be safely crushed without generating sharp points at both ends of the linear mountain fold guiding portion when the volume is reduced by twisting the barrel. There is to do.
Another object of the present invention is to provide a round volume reduction container having a mountain fold guiding portion and a valley fold guiding portion that can be bent without difficulty when twisted.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the first aspect of the present invention comprises a trunk having a round cross section and a bottom for closing the lower end of the trunk,
A plurality of linear mountain fold guide portions and valley fold guide portions are alternately provided at predetermined intervals in the circumferential direction on the side surface of the body portion, and the body portion is twisted around the central axis to be crushed. In the container,
The upper and lower ends of the linear mountain fold guiding portion are connected to an arcuate mountain fold guiding portion that curves convexly toward the upper and lower ends of the body portion.
The mountain fold guiding portion is constituted by a streak-like crease bent in a convex shape, a bead or the like. What is necessary is just a structure which bends in a mountain fold shape regardless of continuous or discontinuous.
The valley fold guiding portion is constituted by a streak-like fold, a bead or the like bent in a concave shape. What is necessary is just a structure which bends into a valley fold shape regardless of continuous or discontinuous.
[0009]
2nd invention is provided with the trunk | drum which has a round cross-section, and the bottom part which obstruct | occludes this trunk | drum lower part, and has predetermined | prescribed predetermined | prescribed circumferential direction a plurality of linear mountain fold guidance parts and valley fold guidance parts In a round volume reduction container with a configuration in which it is alternately arranged at intervals around the entire circumference, and the body is twisted around the central axis to be crushed,
A straight line that intersects the plane including the central axis of the trunk portion and the side surface of the trunk portion is used as a reference line, and the valley fold guiding portion is inclined with respect to the reference line by a predetermined angle in the twist direction from the linear mountain fold guiding portion. It is characterized by that.
[0010]
3rd invention is provided with the trunk | drum which has a round cross-section, and the bottom part which obstruct | occludes this trunk | drum lower part, and predetermined | prescribed the several linear mountain fold induction | guidance | derivation part and valley | fold fold induction | guidance | derivation part to the circumferential direction on the said trunk | drum side. In a round volume reduction container with a configuration in which it is alternately arranged at intervals around the entire circumference, and the body is twisted around the central axis to be crushed,
A plane including the central axis of the trunk portion and side surfaces of the trunk portion, which is connected to the upper and lower ends of the linear mountain fold guidance portion and connected to arcuate mountain fold guidance portions that are convexly curved toward the upper and lower ends of the trunk portion. A straight line intersecting with the reference line is used as a reference line, and the valley fold guiding part is inclined with respect to the reference line by a predetermined angle in the twisting direction with respect to the straight mountain fold guiding part.
[0011]
The arcuate mountain fold guiding part is provided between adjacent linear mountain fold guiding parts.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below based on the illustrated embodiments.
Embodiment 1
FIG. 1 shows a round volume reduction container according to an embodiment of the present invention.
The round volume reduction container 10 is a two-piece can, and is composed of a substantially bottomed cylindrical container body 11 and a canopy 12 that is fastened and fixed to the upper end opening of the container body 11. The container body 11 includes a cylindrical barrel portion 13 having a round cross section, a bottom portion 14 that closes the lower end of the barrel portion 13, and a tapered portion 16 that extends further upward from the upper end of the barrel portion 13. The tapered portion 16 is inclined so as to gradually decrease in diameter from the upper end circular portion 13 a located at the upper end of the body portion 13 toward the small-diameter winding fastening portion 15. Further, a lower end circular portion 13 b located at the lower end of the body portion 13 serves as a boundary portion with the bottom portion 14.
[0013]
A plurality of linear straight mountain fold guiding portions 20 and valley fold guiding portions 30 are alternately provided at predetermined intervals in the circumferential direction on the trunk side surface 13c. The body portion 13 is bent along the linear mountain fold guiding portion 20 and the valley fold guiding portion 30 into a mountain fold and a valley fold shape to be crushed. In this example, the linear mountain fold guiding portion 20 and the valley fold guiding portion 30 are arranged at six locations, respectively.
[0014]
As shown in FIG. 1D, the straight mountain fold guiding portion 20 is configured by a streak-like crease bent in a convex shape. The linear mountain fold guiding portion 20 may be constituted by a convex bead or the like. Moreover, what is necessary is just a structure which bends in a mountain fold shape regardless of continuous or discontinuous.
As shown in FIG. 1D, the valley fold guiding portion 30 is configured by a crease that is bent in a concave shape. The valley fold guiding portion 30 may also be configured by a concave bead or the like, and may be any structure that can be folded into a valley fold shape regardless of whether it is continuous or discontinuous.
[0015]
A straight line where a plane including the central axis N of the trunk portion 13 intersects the trunk side surface 13c is defined as a reference line B, and the valley fold guiding portion 30 is twisted in the twist direction T with respect to the reference line B as compared with the linear mountain fold guiding portion 20. It is inclined at a predetermined angle in the counterclockwise direction in FIG.
In this embodiment, the linear mountain fold guiding portion 20 is inclined by θ1 with respect to the reference line B, and the valley fold guiding portion 30 is inclined with respect to the reference line B by the inclination angle θ1 of the linear mountain fold guiding portion 20. It is inclined at a larger inclination angle θ2.
[0016]
The upper and lower ends of the straight mountain fold guiding portion 20 are positioned in front of the predetermined dimensions of the upper and lower body circular portions 13a and 13b. Then, arc-shaped mountain fold guiding portions 40 that are convexly curved toward the upper and lower ends of the trunk portion 13 are connected to the upper and lower ends of the linear mountain fold guiding portion 20. The arcuate mountain fold guiding part 40 is provided across the adjacent linear mountain fold guiding parts 20. That is, the left and right ends of the arc-shaped portion 40 positioned above and below connect the upper and lower ends of each linear mountain fold guiding portion 20 to form one elliptical pattern. In the illustrated example, an elliptical shape is formed on the trunk side surface 13b. Six patterns are formed. The upper arcuate mountain fold guiding part 40 is in contact with the upper end circular part 13a of the body part 13, and the lower arc-shaped part 40 is in contact with the lower end circular part 13b of the body part.
[0017]
The valley fold guiding portion 30 includes a linear portion 31 that is inclined with respect to the reference line B, and an arcuate curved portion 32 that extends from the upper and lower ends of the linear portion 31. The curved portion 32 has an arc shape and is formed in the twisting direction T with respect to the linear portion 31, one end is connected to the linear portion 31, and the other end is connected to the middle portion of the curved mountain fold guiding portion 20. Yes. Therefore, the valley fold guiding portion 30 is formed in the elliptic pattern.
[0018]
FIG. 1B shows a drawing example of the linear mountain fold guiding portion 20, the valley fold guiding portion 30, and the arc-shaped mountain fold guiding portion 40.
That is, the arc-shaped portion 40 is formed by a semicircle having a diameter of an orthogonal line X orthogonal to the adjacent linear mountain fold guiding portion 20 and in contact with the upper and lower body circular portions 13a and 13b.
On the other hand, the intersection of the orthogonal line X and the linear portion 21 of the linear mountain fold guiding portion 20 on the torsional direction side is defined as b, and the intersection of the perpendicular drawn from the intersection b to the linear portion 21 is defined as a. A circle C1 having a radius between the intersections ab with the intersection b as a center is drawn, and an intersection with the arc-shaped portion 40 is defined as c, and an arc between ac in the circle C1 is defined as the curved portion 32.
[0019]
In the round volume reducing container having the above configuration, when the trunk portion 13 is twisted while holding the canopy 12 and the bottom portion 14, a straight mountain fold guiding portion 20 and an arcuate mountain fold guiding portion are formed on the trunk side surface 13 c. A straight mountain fold bent portion 20F, an arcuate mountain fold bent portion 40F, and a valley fold bent portion 30F are formed along 40 and the valley fold guiding portion 30, and a plurality of oval patterns are formed.
In the case of a can to which internal pressure is applied, the concave and convex patterns of the linear mountain fold guiding portion 20, the arc-shaped mountain fold guiding portion 40, and the valley fold guiding portion 30 are not noticeable due to the internal pressure before opening, and the pattern appears when opened. It is good also as a simple structure.
[0020]
The ridgelines of the straight mountain folds 20F are linear and geometrically located on a single leaf hyperboloid, and the adjacent linear folds 20F are twisted relative to each other. Since the valley fold guiding portion 30 is tilted in the twisting direction relative to the linear mountain fold guiding portion 20, even if the valley fold bending portion 30F is bent, as shown in FIG. The mountain-shaped fold bent portion 20F maintains the positional relationship of torsion, and the bending deformation proceeds without difficulty.
[0021]
When further twisted, the inclination angle of the linear mountain fold bent portion 20F increases in the twisting direction (see FIG. 2A), and wraps around each other from the vicinity of the central portion of each linear mountain fold bent portion 20F. While being deformed, it contracts in the vertical direction (see FIG. 2B).
Since the upper and lower end circular portions 13a and 13b of the trunk portion 13 are not deformed and maintain a circular shape, the upper and lower end circular portions 13a and 13b are approximately perpendicular to the inside along the bending line of the arcuate mountain fold bending portion 40F. As it bends, the straight mountain fold bent portion 20F and the valley fold bent portion 30F are spirally overlapped (see FIG. 2C).
[0022]
Finally, the volume can be reduced by compressing the canopy 12 and the bottom 14 from above and below.
When viewed from the side, as shown in FIG. 2 (D), the vicinity of the upper and lower circular portions 13a and 13b of the trunk portion is, along the bend line of the arcuate mountain fold bend portion 40F, circumferential portions 41 and valley portions. If 42 becomes the shape which wavy periodically and this peak part 41 and trough part 42 fit up and down, a compression amount can be enlarged more.
[0023]
Other Embodiments In the above-described embodiment, the straight mountain fold guiding portion 20 is inclined in the twisting direction. However, as shown in FIG. The angle with respect to B may be 0 degree (parallel).
Moreover, in the said embodiment, although the trunk | drum 13 demonstrated the cylindrical container, as shown to FIG. 3 (B), it is applicable also when the trunk | drum 13 is a taper shape (frustum shape). .
The reference line B in this case is also a line where the plane including the central axis N intersects with the body side surface 13c. The reference line B corresponds to a generatrix drawn from the apex of the cone forming the trunk side surface 13c to the bottom circle.
[0024]
In the above-described embodiment, the metal can has been described as the round volume reduction container. However, the present invention can be applied not only to the metal container but also to a paper container, a synthetic resin container, and the like. Moreover, it is applicable also to a container without a lid.
Moreover, although the said embodiment demonstrated the example which each provides six linear mountain | fold fold induction | guidance | derivation parts and valley | fold fold induction | guidance | derivation parts, the number may be small and may be many. However, if the number is too large, the amount of crushing will be small and will not be crushed. If the number is too small, the amount of crushing will be too large and difficult to crush. Is.
[0025]
【The invention's effect】
As described above, the following effects can be obtained in the present invention.
[0026]
In the first invention, since the upper and lower ends of the mountain fold guiding portion are connected to the arc-shaped mountain fold guiding portion that curves convexly toward the upper and lower ends of the trunk portion, the straight mountain fold guiding when twisted The end of the straight mountain fold bent portion guided along the arc is connected to the arc-shaped mountain fold bent portion guided along the arc-shaped mountain fold guiding portion, so that an acute stress concentration portion does not occur. Work safely.
[0027]
According to a second aspect of the present invention, a straight line intersecting a plane including the central axis of the trunk portion and the side face of the trunk portion is used as a reference line, and the valley fold guiding portion is set in a twisting direction with respect to the reference line in a twisting direction more than the linear mountain fold guiding portion Since it is inclined at an angle, the linear mountain fold bent portions guided by the adjacent linear mountain fold guiding portions maintain the positional relationship of torsion, the bending deformation progresses without difficulty, and the crushing operation can be performed smoothly. .
[0028]
According to a third aspect of the present invention, the arcuate mountain fold guiding part is connected to both ends of the linear mountain fold guiding part, and the valley fold guiding part is at a predetermined angle in the torsion direction with respect to the reference line than the linear mountain fold guiding part. Since it is tilted, it can be safely operated and can be smoothly crushed.
[0029]
Further, since the arcuate mountain fold guiding part is provided between the adjacent linear mountain fold guiding parts, each guiding part can be easily manufactured.
[Brief description of the drawings]
FIG. 1 shows a round volume reduction container according to an embodiment of the present invention, in which FIG. 1 (A) is a schematic perspective view, and FIG. 1 (B) is a diagram showing a drawing example of a guiding portion pattern. (C) is an explanatory view showing the relationship between the linear mountain fold guiding portion and the valley fold guiding portion, and FIG. (D) is a diagram showing the linear mountain fold guiding portion, the arc-shaped mountain fold guiding portion, and the valley fold guiding portion. It is a schematic perspective sectional view at the time of comprising by a line.
FIGS. 2A to 2D are explanatory views showing a volume reduction procedure of FIG.
FIGS. 3A and 3A are diagrams showing another example of patterns of a mountain fold guiding portion and a valley fold guiding portion, and FIG. 3B is a schematic perspective view showing an example of a tapered round volume reducing container. It is.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Round volume reduction container 11 Container main body 12 Canopy 13 trunk | drum 13a trunk | drum upper end circle part, 13b trunk | drum lower end circle part, 13c trunk | drum side surface 14 bottom N center axis B reference line 20 linear mountain fold guide part 30 valley fold Guide part 40 Arc-shaped mountain fold guide part θ1 Inclination angle (linear mountain fold guide part)
θ2 Inclination angle (valley fold guiding part)
20F Straight mountain fold bent portion 30F Valley fold bent portion 40F Arc shaped mountain fold bent portion

Claims (4)

A section having a round cross-section and a bottom for closing the lower end of the body;
A plurality of linear mountain fold guide portions and valley fold guide portions are alternately provided at predetermined intervals in the circumferential direction on the side surface of the body portion, and the body portion is twisted around the central axis to be crushed. In the container,
A circular volume reduction container characterized in that arc-shaped mountain fold guiding portions curved convexly toward the upper and lower ends of the trunk portion are connected to upper and lower ends of the linear mountain fold guiding portion. A section having a round cross-section and a bottom for closing the lower end of the body;
A round volume reduction container having a configuration in which straight mountain fold guide portions and valley fold guide portions are alternately provided at predetermined intervals in the circumferential direction on the side surface of the trunk portion, and the barrel portion is twisted around the central axis to be crushed. In
A straight line that intersects the plane including the central axis of the trunk portion and the side surface of the trunk portion is used as a reference line, and the valley fold guiding portion is inclined with respect to the reference line by a predetermined angle in the twist direction from the linear mountain fold guiding portion. A round volume reduction container. A section having a round cross-section and a bottom for closing the lower end of the body;
A plurality of linear mountain fold guide portions and valley fold guide portions are alternately provided at predetermined intervals in the circumferential direction on the side surface of the body portion, and the body portion is twisted around the central axis to be crushed. In the container,
A plane including the central axis of the trunk portion and side surfaces of the trunk portion, which is connected to the upper and lower ends of the linear mountain fold guidance portion and connected to arcuate mountain fold guidance portions that are convexly curved toward the upper and lower ends of the trunk portion. A round volume reduction container characterized in that a straight line intersecting with a reference line is used as a reference line, and the valley fold guiding part is inclined with respect to the reference line by a predetermined angle in the twisting direction with respect to the straight mountain fold guiding part. The circular volume reduction container according to claim 1 or 3, wherein the arcuate mountain fold guiding portion is provided between adjacent linear mountain fold guiding portions.

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