JP3906386B2 - Synthetic resin housing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin casing which can be easily reduced in volume and deformed and can be used after being restored to its original form.
[0002]
[Prior art]
Synthetic resin casings molded by blow molding or biaxial stretch blow molding means are frequently used as containers for various liquid contents.
[0003]
[Problems to be solved by the invention]
However, while this synthetic resin casing has the advantage of being lightweight, it is bulky and occupies a large space, so it is delivered to the product manufacturer after being molded by the container manufacturer and filled with the content liquid. In the process up to this point, there was a problem that the storage cost and the transportation cost were high and the handling was troublesome.
[0004]
In addition, after use, in order to facilitate the disposal process, it is usually crushed flat by hands and feet to reduce the volume, but anyone can easily and reliably perform this crushing. There was a problem that it was not possible.
[0005]
As a technique for facilitating the crushing of the casing at the time of disposal, there is a technique described in Japanese Utility Model Publication No. 60-75212.
[0006]
The synthetic resin casing described in this publication is provided with a pair of vertical ribs at an axially symmetric position of the trunk portion, and following the vertical ribs, an arc-shaped rib extending toward the shoulder portion and the lower end portion of the trunk portion is continuously provided. At the time of disposal, the portion surrounded by the ribs is pressed and deformed by depression, thereby reducing the volume.
[0007]
However, in this prior art, the depressed part is from the shoulder on one side to the lower end of the trunk, and the other shoulder, trunk, and bottom remain in their original form. There is a problem that the whole cannot be flattened and deformed sufficiently, and because it is intended for crushing at the time of disposal, it is almost impossible to restore the part that has been depressed and deformed to its original shape It was impossible.
[0008]
Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and enables the synthetic resin casing to be easily and sufficiently flattened and reducibly reduced and deformable. Therefore, it is an object of the present invention to make the handling from the molding to the filling of the content liquid and the disposal process easy and efficient and reduce the cost.
[0009]
[Means for Solving the Problems]
Among the present invention for solving the above technical problems, the means of the invention according to claim 1 is:
Both short sides of a rectangular shoulder portion having a mouth tube portion standing in the center and having a rectangular shape parallel to at least two long sides opposed to each other in plan view, and a rectangular bottom portion that is substantially the same shape as the shoulder portion Having a central shell part formed in a normal wall thickness, which is connected by a plate-like fixed body part,
The planar shape is substantially the same at both long side edges of the central shell , the tapered wall connected to both long edges of the shoulder of the central shell, and both long edges of the fixed body. A pair of reversing body parts formed of an arc wall connected so as to protrude in an arc shape and a taper wall connected to both ends of the long side of the bottom part, and connected to a thinner wall than the central shell part Having
The two reversing body parts can be easily depressed and deformed into the central shell part by elastic reversal, and can be restored to the original form.
It is in.
[00010]
The casing formed by the container maker is elastically inverted by pressing both inversion barrels inward and deformed into the central shell.
[00011]
As a result, since the entire planar shape including the bottom part of the both inverted body parts is recessed and accommodated in the central shell part having a substantially rectangular shape, the entire casing is sufficiently reduced in volume, and this volume reduction is performed thereafter. The product is handled and delivered to the product manufacturer.
[00012]
In a product manufacturer, both inverted and deformed body parts are inverted outwards by air pressure and restored to the original shape at the time of molding, and then filled with the content liquid for use in the product. Alternatively, the content liquid is injected into a casing in which both inverted body portions are depressed and deformed, and the casing is restored to the original shape at the time of molding, and the content liquid is filled for use in the product.
[00013]
After the use of the housing, the two inverted body parts are again deformed to reduce the volume and are disposed of.
[00014]
The invention described in claim 2 is obtained by adding to the invention described in claim 1 that the thickness of the inversion body portion is set to 2/3 or less of the thickness of the central shell portion.
[00015]
In the invention according to the second aspect, it is possible to more easily and smoothly achieve the collapsed volume reduction deformation and the restoration to the original shape due to the elastic reversal of the reversing body.
[00016]
The invention described in claim 3 is obtained by adding a shallow V-groove reversal line to the boundary portion between the central shell and both reversal body portions in addition to the invention of claim 1.
[00017]
In the invention according to the third aspect, the reversal deformation of both reversal body portions can be achieved easily and accurately.
[00018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The casing of the present embodiment has a planar shape protruding in a substantially arc shape at both long side end edges of the central shell portion 1 whose planar shape is formed in a substantially rectangular shape by blow molding or the like of an appropriate synthetic resin material. The pair of inverted body parts 6 are connected to each other.
[00019]
The central shell portion 1 has a mouth portion 2 standing in the center, and a shoulder portion 3 having a substantially rectangular planar shape, and the shoulder portion 3 has the same long side length and a short side length slightly. It is formed from a long rectangular bottom 5 and a substantially rectangular flat plate-shaped fixing body 4 that connects between the short sides of the shoulder 3 and the bottom 5, and has a normal thickness as a casing. It is molded relatively hard.
[00020]
The inversion body 6 includes a taper wall 7 connected to both long side edges of the shoulder 3 of the central shell 1, an arc wall 8 connected to both long edges of the fixed body 4, and A taper wall 9 connected to both long side edges of the bottom portion 5 is continuously provided so that the maximum projecting width is substantially half of the short side length of the central shell portion 1. And formed into a thin wall having a thickness equal to or less than 2/3 of the thickness of the central shell 1 so that elastic reversal deformation is easily possible.
[00021]
A shallow V-groove reversal line 10 is formed on the surface of the boundary between the central shell 1 and both reversal body 6 by bending the surface.
[00022]
Both inversion barrels 6 are easily elastically inverted from the inversion line 10 by an inward pressing operation, and are depressed and reduced in deformation in the central shell 1 (see the two-dot chain line in the figure). By applying a force in the opposite direction to the lens and inverting it outward, it can be easily restored to its original shape.
[00023]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
The casing formed by the container maker can fold and store both inverted barrels in the central shell whose overall planar shape including the bottom is substantially rectangular by deforming both inverted barrels. Therefore, the entire housing can be reduced in volume sufficiently.
[00024]
And by handling in this flat and volume-reduced and deformed state, the occupied space can be greatly reduced, thus reducing the cost of storage, transportation, etc. in the process until the content liquid is filled And can be handled easily and efficiently.
[00025]
In addition, the casing after being restored to its original shape after being used as a container, can be disposed by deforming both inverted barrels again, reducing the volume sufficiently flat, and performing disposal processing. Anyone can easily and sufficiently achieve volume reduction deformation of the housing after use, and can easily and efficiently perform the disposal process.
[00026]
Although it is easy to reduce the volume, it has a central shell with normal rigidity despite the fact that it is an easily deformable enclosure. The handling operation of the housing can be obtained.
[Brief description of the drawings]
FIG. 1 is a front view, partly in section, showing an embodiment of the present invention.
FIG. 2 is a plan view, partly in section, of the embodiment shown in FIG.
3 is a side view of the embodiment shown in FIG. 1. FIG.
[Explanation of symbols]
1; central shell 2; mouth tube 3; shoulder 4; fixed barrel 5; bottom 6; reversal barrel 7; taper wall 8; arc wall 9; taper wall 10;

Claims (3)

A rectangular shoulder portion (3) having a mouth tube portion (2) standing in the center and having a planar shape parallel to at least two opposite long sides, and a rectangular shape substantially identical to the shoulder portion (3) A central shell portion (1) formed into a normal wall thickness, and a central shell portion (1) formed by connecting a plate-shaped fixed body portion (4) between each short side to the bottom portion (5) both longitudinal sides edges of the shoulder portion (3) of the two longitudinal sides edges in concatenated tapered wall (7), the fixed body part of the central shell part (1) to (4) both the longitudinal side edges, and linked arcuate wall so that the planar shape projecting in a substantially arcuate shape (8), said bottom (5) of the two longitudinal sides edges to linked tapered walls (9) And a pair of reversing body parts (6) connected to a thinner wall than the central shell part (1), and the reversing body parts (6) are connected to the central shell part (6) by elastic reversal. 1) A synthetic resin housing that can be easily depressed and deformed and can be restored to its original shape.   The synthetic resin casing according to claim 1, wherein the thickness of the inversion barrel (6) is set to 2/3 or less of the thickness of the central shell (1).   The synthetic resin casing according to claim 1 or 2, wherein a shallow V-groove reversal line (10) is formed at the boundary between the central shell (1) and the reversal body (6).

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