JP2014193737A - Bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bottle capable of simply and stably coupling another bottle.SOLUTION: A bottom wall portion 22 of a bottom portion 14 is equipped with a ground portion 23 positioned at an outer peripheral edge portion, a rising peripheral wall portion 31 ranging to the ground portion 23 from the inside in a diametrical direction, and extending upward; a moving wall portion 32 projecting out from an upper end portion of the rising peripheral wall portion 31 toward the inside in the diametrical direction; and a recessed peripheral wall portion 33 recessed upward from an inner end portion in a diametrical direction of the moving wall portion 32. A mouth portion 51 of another bottles 50 different from a bottle 1 can be inserted in the recessed peripheral wall portion 33. At a connection part between the moving wall portion 32 and the recessed peripheral wall portion 33, an engaging protrusion 42 projecting toward the inside in the diametrical direction and capable of engaging with the mouth portion 51 of another bottle 50 is formed.

Description

  The present invention relates to a bottle.

2. Description of the Related Art Conventionally, as a bottle formed of a synthetic resin material in a bottomed cylindrical shape, a configuration in which a mouth portion, a shoulder portion, a trunk portion, and a bottom portion are sequentially provided in the bottle axial direction is known.
Moreover, in this kind of bottle, as a structure which makes it easy to stack a some bottle in a bottle axial direction, the internal thread part which sinks upwards is formed in a bottom part, and the opening | mouth part (male thread part) of another bottle is formed in this internal thread part. A configuration is known in which a plurality of bottles can be connected in a stacked state by screwing (see, for example, Patent Document 1 below).

Utility Model Registration No. 3066731

However, in the conventional bottle described above, since the female screw portion of the bottle and the mouth portion (male screw portion) of another bottle are connected by screwing, the connecting operation is complicated.
In addition, if the bottom part is deformed due to decompression in the bottle, the female thread part may be deformed, and the connection state with the mouth part of another bottle may become unstable.

  Then, this invention is made | formed in view of the situation mentioned above, The objective is to provide the bottle which can connect another bottle simply and stably.

In order to solve the above problems, the present invention proposes the following means.
The bottle according to the present invention is a bottle in which a mouth part, a shoulder part, a body part, and a bottom part are sequentially arranged along the bottle axial direction, and the bottom wall part of the bottom part is a grounding part located at an outer peripheral edge part A rising peripheral wall portion extending from the inner side in the bottle radial direction to the grounding portion and extending upward; a movable wall portion protruding from the upper end portion of the rising peripheral wall portion toward the inner side in the bottle radial direction; and the movable wall portion A recessed peripheral wall portion recessed upward from an inner end portion of the bottle in the radial direction of the bottle, wherein the mouth portion of another bottle different from the bottle can be inserted into the recessed peripheral wall portion, and the movable wall portion An engagement protrusion that protrudes toward the inner side in the bottle radial direction and engages with the mouth portion of the other bottle is formed at a connection portion between the dent and the depressed peripheral wall portion.

According to this configuration, when the contents in the bottle are cooled or the like, and the internal pressure of the bottle decreases, a negative pressure acts on the inner surface of the bottom wall portion, so that the movable wall portion moves upward with the depressed peripheral wall portion upward. Thus, the reduced pressure in the bottle is absorbed by rotating around the connecting portion with the rising peripheral wall portion.
In particular, according to the configuration of the present invention, the engagement protrusion that protrudes toward the inner side in the radial direction at the connection portion between the movable wall portion and the depressed peripheral wall portion and can be engaged with the mouth portion of another bottle different from the bottle. Therefore, both bottles can be easily connected as compared to the conventional configuration in which both bottles are connected by screwing.
Furthermore, since the mouth part of the other bottle and the engagement protrusion are merely engaged, both bottles can be connected even when the cap is attached to the mouth part of the other bottle. it can.

Moreover, the said movable wall part may be extended toward the downward direction gradually as it goes inside the bottle radial direction.
In this case, since the inner diameter of the movable wall portion and the engaging projection is reduced by rotating the movable wall portion upward, as described above, the mouth portion of another bottle is inserted into the depressed peripheral wall portion. By reducing the internal pressure of the bottle, the mouth portion of the other bottle is naturally engaged with the engagement protrusion of the bottle.
This also makes it easy to connect the two bottles and improves the stackability.
In addition, as described above, by rotating the movable wall upward, the inner diameter of the movable wall and the engagement protrusion is reduced, so that the engagement portion between the engagement protrusion of the bottle and the mouth of the other bottle is reduced. It can be surely increased. Thereby, unlike the structure which connects both bottles by screwing like the past, both bottles can be connected stably.

Further, the movable wall portion may be deformable so as to gradually extend upward as it goes radially inward when the bottle is depressurized.
In this case, with the movable wall portion of the bottle arranged so as to follow the shoulder portion of the other bottle, the engagement protrusion of the bottle and the mouth portion of the other bottle are engaged. The bottle can be connected more stably.

The neck may be formed with a neck ring that protrudes outward in the bottle radial direction, and the engagement protrusion may be engageable with the neck ring of the other bottle.
In this case, among the other bottles, the neck ring protruding from the mouth portion toward the outside in the radial direction of the bottle can be engaged with the engagement protrusion. Therefore, the engagement protrusion of the bottle and the mouth portion of the other bottle Can be secured, and both bottles can be more reliably engaged.

  According to the bottle of the present invention, other bottles can be connected easily and stably.

(A) is a longitudinal cross-sectional view in alignment with the bottle axial direction of the bottle in embodiment, (b) is a bottom view. It is explanatory drawing which shows the state which accumulated the some bottle in the bottle axial direction. It is explanatory drawing which shows the state which accumulated the some bottle in the bottle axial direction.

Hereinafter, bottles according to embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1A, the bottle 1 according to the present embodiment includes a mouth part 11, a shoulder part 12, a body part 13, and a bottom part 14, which are positioned on a common axis with their respective central axes. It is set as the schematic structure connected in this order in the state.

Hereinafter, the above-described common axis is referred to as the bottle axis O, the mouth 11 side along the bottle axis O direction is referred to as the upper side, the bottom 14 side is referred to as the lower side, and the direction orthogonal to the bottle axis O is referred to as the radial direction. The direction around the bottle axis O is called the circumferential direction.
The bottle 1 is formed by blow molding a preform made of a synthetic resin material formed into a bottomed cylindrical shape by injection molding. Further, each of the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 has a circular shape in a cross-sectional view orthogonal to the bottle axis O.

  The mouth portion 11 of the present embodiment is a portion of the bottle 1 that is located above the upper end edge of the shoulder portion 12, and protrudes outward in the radial direction at an intermediate portion in the bottle axis O direction. An annular neck ring 11 a extending over the entire circumference of the mouth portion 11 is formed. A cap 10 is attached to a portion of the mouth portion 11 located above the neck ring 11a.

A first annular groove 16 is continuously formed over the entire circumference at the connecting portion between the shoulder portion 12 and the body portion 13.
The trunk | drum 13 is formed in a cylindrical shape, and between both ends of the bottle axis | shaft O direction is formed in a smaller diameter than these both ends. A plurality of second annular grooves 17 are continuously formed on the body 13 over the entire circumference at intervals in the bottle axis O direction.
A third annular groove 18 is formed continuously over the entire circumference at the connecting portion between the body portion 13 and the bottom portion 14.

As shown in FIGS. 1 (a) and 1 (b), the bottom part 14 closes the heel part 21 whose upper end opening part is connected to the lower end opening part of the body part 13, the lower end opening part of the heel part 21, and And a bottom wall portion 22 whose outer peripheral edge portion is a ground contact portion 23.
In the heel portion 21, a fourth annular groove 24 is formed continuously over the entire circumference.

  The bottom wall portion 22 includes a rising peripheral wall portion 31 that extends from the radially inner side and extends upward to the ground contact portion 23, and an annular movable wall portion 32 that protrudes radially inward from the upper end portion of the rising peripheral wall portion 31. The movable wall portion 32 includes a depressed peripheral wall portion 33 that is depressed upward from the radial inner end portion, and a closed wall portion 34 that closes the upper end opening of the depressed peripheral wall portion 33.

  The movable wall portion 32 is formed in a curved shape that protrudes downward, and gradually extends downward from the outside in the radial direction toward the inside. The movable wall portion 32 and the rising peripheral wall portion 31 are connected to each other via a curved surface portion 35 that protrudes upward. The movable wall portion 32 is rotatable about the curved surface portion 35 so as to move the depressed peripheral wall portion 33 upward.

A plurality of ribs 36 are radially arranged around the bottle axis O on the movable wall portion 32. That is, the ribs 36 are arranged at equal intervals along the circumferential direction. In the example shown in the drawing, the rib 36 is configured such that a plurality of concave portions 36 a that are recessed in a curved shape upward are intermittently and straightly extended along the radial direction. Thereby, as for the rib 36, the longitudinal cross-sectional view shape along the bottle axis | shaft O direction is formed in a waveform.
The recesses 36a are formed in the same shape and size, and are arranged at equal intervals along the radial direction. And in each of the some rib 36, each position along the radial direction in which the some recessed part 36a is arrange | positioned is the same.

  The depressed peripheral wall portion 33 has a cylindrical shape arranged coaxially with the bottle axis O, and an upper end edge thereof is connected to the outer peripheral edge of the closing wall portion 34. That is, the space defined by the depressed peripheral wall portion 33 and the closed wall portion 34 constitutes a top-like cylindrical accommodating portion 41 into which a mouth portion 51 of another bottle 50 described later can be inserted.

Here, the connecting portion between the movable wall portion 32 and the depressed peripheral wall portion 33 described above, the lower end edge of the depressed peripheral wall portion 33 in the illustrated example, protrudes radially inward and is different from the bottle 1 described later. An engaging protrusion 42 that can be engaged with the mouth portion 51 of the bottle 50 is formed.
The engagement protrusion 42 has a curved surface that protrudes inward in the radial direction in a longitudinal sectional view along the bottle axis O direction, and is formed over the entire circumference in the circumferential direction. Further, in the engagement protrusion 42, a connection portion (lower end connection portion) with the movable wall portion 32 extends following the surface shape of the movable wall portion 32, and a connection portion (upper end connection portion) with the depressed peripheral wall portion 33. ) Extends downward as it goes radially inward.

  Next, a method of connecting the bottle 1 described above and another bottle 50 different from the bottle 1 along the bottle axis O direction will be described. In the following description, a case will be described in which a plurality of bottles 1 and 50 are stacked up and down for storage and the like after the contents of the bottles 1 and 50 are heated and filled. In addition, the configuration of the other bottles 50 is the same as that of the bottle 1 described above, and detailed description thereof is omitted.

As shown in FIG. 2, first, both bottles 1 and 50 are stacked along the bottle axis O direction. Specifically, in the state where the bottom wall portion 22 of the bottle 1 after filling the contents and the mouth portion 51 of the other bottle 50 are opposed to each other along the bottle axis O direction, It is made to approach along the bottle axis | shaft O direction, and the opening part 51 and the cap 52 of the other bottle 50 are inserted in the accommodating part 41 of the bottle 1. As shown in FIG. At this time, among the other bottles 50, the neck ring 51 a is positioned above the engagement protrusion 42 of the bottle 1, and the other bottle is located until the upper end surface of the cap 52 is close to the closing wall portion 34 of the bottle 1. 50 is inserted.
In the state shown in FIG. 2, the inner diameter of the engaging protrusion 42 (the distance between the radially opposing portions of the inner peripheral surface of the engaging protrusion 42) is larger than the outer diameter of the neck ring 51 a of the other bottle 50. However, the inner diameter of the engagement protrusion 42 may be larger than the neck ring 51a of the other bottle 50.

  Thereafter, when the contents in the bottle 1 are cooled and the internal pressure of the bottle 1 decreases, a negative pressure acts on the inner surface of the bottom wall portion 22, so that the movable wall portion 32 moves the curved surface portion 35 of the bottom wall portion 22. It pivots upward about the center. At this time, the movable wall portion 32 moves so as to lift the depressed peripheral wall portion 33 and the blocking wall portion 34 upward. Then, the movable wall portion 32 has a curved surface shape protruding downward as shown in FIG. 2 and a curved surface shape protruding upward as shown in FIG. 3 (increase gradually toward the inner side in the radial direction). Inverted deformation). In this way, when the bottom wall portion 22 of the bottle 1 is positively deformed upward at the time of depressurization, the internal pressure change (decompression) of the bottle 1 can be absorbed without deformation of the body portion 13 or the like. it can.

  Here, when the movable wall portion 32 rotates upward as the bottle 1 is depressurized, the engagement protrusion 42 moves upward and the inner diameters of the movable wall portion 32 and the engagement protrusion 42 are reduced. Accordingly, the inner diameter of the engagement protrusion 42 is sufficiently smaller than the outer diameter of the neck ring 51a of the other bottle 50, and the engagement protrusion 42 is engaged with the neck ring 51a of the other bottle 50 from below. Become. As a result, the bottle 1 and the other bottle 50 are connected in a state where they are stacked in the bottle axis O direction. In the state of FIG. 3, the movable wall portion 32 of the bottle 1 is disposed so as to follow the shoulder portion 53 of the other bottle 50, and the grounding portion 23 of the bottle 1 is the shoulder portion of the other bottle 50. 53 is close to or in contact with 53.

  Further, when the bottle 1 and the other bottle 50 are separated, both the bottles 1 and 50 are separated along the bottle axis O direction. Thereby, the engagement between the engagement protrusion 42 of the bottle 1 and the neck ring 51 a of the other bottle 50 is released, and the mouth 51 of the other bottle 50 can be pulled out from the container 41 of the bottle 1.

Therefore, according to the present embodiment, since the engaging projection 42 that protrudes inward in the radial direction is formed at the connection portion between the movable wall portion 32 and the depressed peripheral wall portion 33, both bottles are provided as in the conventional case. Both bottles 1 and 50 can be easily connected compared with the structure which connects by screwing.
Furthermore, since it is a structure which only engages the mouth part 51 of the other bottle 50 and the engagement protrusion 42, both caps 52 are attached to the mouth part 51 of the other bottle 50. Bottles 1 and 50 can be connected.

In particular, in the present embodiment, since the inner diameter of the movable wall portion 32 and the engagement protrusion 42 is reduced by rotating the movable wall portion 32 upward, the mouth portion 51 of the other bottle 50 is depressed. As described above, the mouth 51 (neck ring 51a) of the other bottle 50 is naturally engaged with the engagement protrusion 42 of the bottle 1 by reducing the internal pressure of the bottle 1 as described above while being inserted into the bottle 33. It will be.
Also by this, the connecting operation of the bottles 1 and 50 is surely simplified and the stacking property can be improved.

Further, as described above, the inner diameters of the movable wall portion 32 and the engagement protrusion 42 are reduced by the upward rotation of the movable wall portion 32, so that the engagement protrusion 42 of the bottle 1 and the mouth portion of the other bottle 50. The engagement part with 51 can be increased reliably. Thereby, unlike the structure which connects both bottles by screwing like the past, both bottles 1 and 50 can be connected stably.
Moreover, in the present embodiment, when the pressure in the bottle 1 is reduced, the movable wall portion 32 is deformed so as to gradually extend upward as it goes inward in the radial direction. The engagement protrusion 42 of the bottle 1 and the mouth portion 51 of the other bottle 50 are engaged with each other in a state of being disposed so as to follow the shoulder portion 53 of the other bottle 50. As a result, both bottles 1 and 50 can be connected more stably.

  Moreover, since the engagement protrusion 42 of this embodiment can be engaged with the neck ring 51a of the other bottle 50, the engagement protrusion 42 of the bottle 1 and the mouth part 51 of the other bottle 50 are engaged. A part can be secured and both bottles 1 and 50 can be engaged more reliably.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

For example, in the above-described embodiment, the case where the engagement protrusion 42 is formed over the entire circumference has been described. However, the present invention is not limited thereto, and the engagement protrusion 42 may be intermittently formed in the circumferential direction.
In the above-described embodiment, the mouth portion 51 of the other bottle 50 is inserted into the housing portion 41 before the movable wall portion 32 is deformed (the state shown in FIG. 2). You may insert the opening part 51 of the other bottle 50 in the accommodating part 41 after the deformation | transformation of the wall part 32 (state shown in FIG. 3).

  Furthermore, in embodiment mentioned above, the engagement protrusion 42 of the bottle 1 and the opening | mouth part of the other bottle 50 are because the movable wall part 32 becomes a curved surface shape which protrudes upwards with pressure reduction in the bottle 1. However, the present invention is not limited to this. That is, the engaging projection 42 of the bottle 1 and the mouth part 51 of the other bottle 50 are rotated by the upward movement of the movable wall part 32 from the state before decompression of the bottle 1 shown in FIGS. Are engaged, the shape of the movable wall portion 32 when the bottle 1 and the other bottle 50 are engaged can be appropriately changed in design. In this case, for example, the bottles 1 and 50 may be engaged with each other in a state where the movable wall portion 32 is a flat surface extending along a plane orthogonal to the bottle axis O direction.

  Further, in the above-described embodiment, the configuration in which the neck ring 51 a is engaged with the engagement protrusion 42 of the bottle 1 among the mouth portions 51 of the other bottles 50 is described. An arbitrary portion can be engaged with the engagement protrusion 42. Further, the cap 10 and the engaging protrusion 42 may be engaged.

In the embodiment described above, the cross-sectional view shape along the radial direction of each of the shoulder portion 12, the trunk portion 13, and the bottom portion 14 is a circular shape, but is not limited thereto. May be.
Furthermore, in the above-described embodiment, the bottles 1 and 50 are stacked in two stages. However, the present invention is not limited to this, and a plurality of stages of three or more stages may be stacked.
In the above-described embodiment, the configuration in which the bottles 1 and 50 are connected with the cap 52 attached is described. However, the present invention is not limited to this, and other bottles 50 may be connected without the cap 52 attached. It doesn't matter.

The synthetic resin material forming the bottle 1 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof.
Further, the bottle 1 is not limited to a single layer structure, and may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having a gas barrier property, a layer made of a recycled material, or a layer made of a resin material having an oxygen absorbing property.

  In addition, in the range which does not deviate from the meaning of this invention, it is possible to replace suitably the component in the embodiment mentioned above by the known component, and you may combine each modification mentioned above suitably.

DESCRIPTION OF SYMBOLS 1 ... Bottle 11, 51 ... Mouth part 11a, 51a ... Neck ring 12 ... Shoulder part 13 ... Body part 14 ... Bottom part 22 ... Bottom wall part 23 ... Grounding part 31 ... Standing peripheral wall part 32 ... Movable wall part 33 ... Depression peripheral wall part 42 ... engagement protrusion 50 ... other bottle O ... bottle shaft

Claims (4)

A bottle in which a mouth part, a shoulder part, a body part, and a bottom part are continuously arranged in order along the bottle axial direction,
The bottom wall of the bottom is
A grounding portion located at the outer periphery,
A rising peripheral wall portion extending from the inside in the bottle radial direction to the grounding portion and extending upward;
A movable wall portion protruding from the upper end of the rising peripheral wall portion toward the inside in the bottle radial direction;
A depressed peripheral wall portion that is depressed upward from an inner end portion in the bottle radial direction of the movable wall portion,
The mouth of another bottle different from the bottle can be inserted into the depressed peripheral wall,
The connecting portion between the movable wall portion and the depressed peripheral wall portion is formed with an engaging protrusion that protrudes inward in the bottle radial direction and engages with the mouth portion of the other bottle. Bottle.   The bottle according to claim 1, wherein the movable wall portion extends gradually downward toward the inner side in the bottle radial direction.   The bottle according to claim 2, wherein the movable wall portion is configured to be deformed so as to gradually extend upward as it goes inward in the radial direction when the bottle is depressurized. The mouth is formed with a neck ring protruding outward in the bottle radial direction,
The bottle according to any one of claims 1 to 3, wherein the engagement protrusion is engageable with the neck ring of the other bottle.

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