JP2019182493A - Bottle container made of resin - Google Patents

Abstract

To provide a bottle container made of resin which even a person whose grasping power is weak such as an aged person can open while being made to a design by which a cap can be produced comparative easily.SOLUTION: In a bottle container made of resin which has a hollow container body portion which can store liquid, and a bottle made of resin having a neck portion which is protruded in one portion of the container body portion and has a screw streak portion to the outside, and whose the inside becomes a passage of the liquid, and a cap made of resin having a lid portion which has inside a screw streak portion that screws with the screw streak portion of the outside of the neck portion of the bottle made resin, and a stopper portion which is arranged in the side of a base end of the neck portion, and is connected as making a notch portion intervene in the lid portion at the time of being unopened, the bottle container made of resin of this invention has a protrusion portion which protrudes to the outside of the radial direction on the stopper portion of the cap made of resin.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a resin bottle container such as a plastic bottle that can accommodate beverages, and more particularly to a resin bottle container having a rotary resin cap.

  Resin bottle containers such as plastic bottles are light and relatively inexpensive to sell and carry liquids for beverages, and the container body itself is strong and has an excellent function of holding contents. Therefore, it is widely used. For example, for drinks such as soft drinks and tea, a neck part that becomes a drinking mouth is formed in a container body formed of a polyethylene terephthalate resin in a hollow bottle shape, and a resin cap is attached to the neck part so as to be screwed together. Yes.

  When such a PET bottle container is used from an unopened state, the user applies a force so as to twist a generally cylindrical cap around the central axis. Then, a part of the cap is broken, and the cap is detached from the neck portion of the container by further turning. That is, in order to open from an unopened state, a force that breaks a part of the cap is necessary, which is a force that can be applied by normal adults and children, but for elderly people and those who are not healthy Sometimes it becomes difficult to give such a force to the cap.

  Therefore, as a new cap structure, an example in which a plurality of anti-slip protrusions are provided on the peripheral side surface of the cap (see, for example, Patent Document 1), and a tool that supports rotation such as a wrench can be attached. A cap structure (see, for example, Patent Document 2) is known. By using these techniques, even those who are weak in turning the cap, such as the elderly, can open the cap, and can be operated to close the cap while drinking the contents.

Utility Model Registration No. 3172698 Japanese Patent No. 4783866

  However, in the structure in which a plurality of anti-slip protrusions are provided on the peripheral side surface of the cap, it is easy to put a burden on the work of taking out the product from the mold when the cap is formed by injection molding. When the protrusion is formed in the middle, a movable member in the mold is required, and the amount of resin material used increases. Further, in a mechanism that requires a separate member that fits into a cap such as a wrench, for example, there is a problem in unsealing when going out or where there is no separate member.

  Therefore, in view of the above technical problems, the present invention provides a resin bottle container that can be opened even by a person with weak gripping force, such as an elderly person, while being designed so that a cap can be manufactured relatively easily. Objective.

  In view of the above technical problem, the resin bottle container of the present invention has a hollow container main body that can store a liquid, a part protruding from the container main body, and a screw thread on the outside. A resin bottle having a neck portion serving as a flow path for the liquid, a lid portion having an inner thread portion to be screwed into the outer thread portion of the neck portion of the resin bottle, and a proximal end side of the neck portion And a resin bottle container having a resin cap that is connected to the lid portion through a cutout portion when unopened and has a locking portion that is separated from the lid portion when the cutout portion is broken when opened. The locking portion of the resin cap has a protruding portion that protrudes radially outward.

Further, according to a preferred example of the resin bottle container of the present invention, a retaining piece that abuts against the collar formed on the neck is protruded from the inside of the locking portion of the resin cap, The retaining piece is composed of a plurality of projecting pieces spaced apart from each other, and one or a plurality of the projecting portions are formed in spaced regions of the plurality of projecting pieces. Also,
The protruding portion may have a structure having a thickness similar to that of the locking portion, and the resin cap may be integrally formed including the protruding portion. Furthermore, a ridge portion may be formed on the surface of the protruding portion.

  According to another preferred example of the resin bottle container of the present invention, a breakable portion that can be broken is formed on the side portion of the protruding portion in the same manner as the cutout portion, and the breakage after the container is opened. A part is fractured | ruptured and the said latching | locking part detach | leaves from the said neck part of the said resin-made bottles, It is characterized by the above-mentioned.

  Furthermore, the resin cap of the present invention is provided with a lid portion having a screw portion that is screwed into a screw portion formed on the outer side of the neck portion of the resin bottle, and an unopened seal disposed on the base end side of the neck portion. A resin cap that is sometimes connected to the lid portion via a cutout portion and has a locking portion that is separated from the lid portion when the cutout portion is broken when opened, the locking portion protruding radially outward It has the protrusion part which does.

It is a principal part perspective view of the resin-made bottle containers of one Embodiment of this invention. It is sectional drawing cut | disconnected along the II-II line | wire of FIG. 1, and seeing in the arrow direction. It is a top view of the latching | locking part of the resin bottle containers of one Embodiment of this invention. It is a bottom view of the latching | locking part of the resin bottle containers of one Embodiment of this invention. It is a principal part perspective view of the latching | locking part of the resin bottle containers of one Embodiment of this invention. It is a principal part perspective view of the latching | locking part of the resin bottle containers of other embodiment of this invention. It is a principal part bottom view of the latching | locking part of the resin-made bottle containers of other embodiment of this invention.

  FIG.1 and FIG.2 is a figure which shows the resin bottle containers of one Embodiment of this invention. As shown in FIG. 1, the resin bottle container 10 of the present embodiment includes a resin bottle 12 that stores a liquid such as a beverage, and a resin cap 20 that opens and closes the stopper of the resin bottle 12. is doing. The resin bottle 12 is, for example, a transparent or translucent bottle that is formed of, for example, polyethylene terephthalate resin, which is relatively difficult to break, and has a required size such as 2.0 liters or 500 ml depending on the volume of liquid to be stored. In this embodiment, the container body 14 has a substantially cylindrical shape and a neck 16 serving as a flow path for the liquid to be stored. The substantially cylindrical neck 16 projects from the upper part of the container main body 14 so that the axial direction of the cylinder is vertical, and has a threaded portion 18 on the outer side of the peripheral side surface. The liquid in the container main body 14 can flow out to the outside through the internal flow path of the neck 16. The thread portion 18 formed on the outer peripheral surface of the neck portion 16 is a resin portion that protrudes from the outer peripheral surface of the neck portion 16 at a required height, and protrudes in the radial direction near the base end portion in the middle of the outer peripheral surface of the neck portion 16. This is a spiral ridge formed between the flange portion 17 and the mouth portion 19 serving as a liquid outlet. A locking portion holding groove 13 is formed on the peripheral side surface of the neck portion 16 from the flange portion 17 to the proximal end side, and a flange-shaped bottom portion 15 is formed on the proximal end side that protrudes relatively large in the radial direction. . The locking portion holding groove 13 is a groove between the flange portion 17 and the flange-shaped bottom portion 15 for holding a locking portion 26 of the resin cap 20 described below.

  The resin cap 20 attached to the neck portion 16 of the resin bottle 12 is screwed into the neck portion 16 to seal the liquid, and the locking portion is separated from the lid portion 22 by breaking the cutout portion 24 when opened. 26. On the inner side of the lid portion 22, a screw portion 28 that is screwed into the screw portion 18 outside the neck portion 16 is provided. When the resin cap 20 is rotated, the screw portion 28 of the lid portion 22 moves along the screw portion 18 of the neck portion 16, and the screw portion 28 of the lid portion 22 is moved. It can be moved while slowly rotating in the axial direction of the neck 16. Before opening the resin cap 20, the lower end portion of the lid portion 22 is connected to the locking portion 26 via the cutout portion 24. The shape of the locking portion 26 is a substantially cylindrical annular shape having a predetermined thickness, the proximal end side of the neck portion 16 is slightly larger in diameter than the distal end side, and the locking portion 26 is opened before the resin cap 20 is opened. Is connected to the lower end portion of the lid portion 22 via the cutout portion 24. The cutout portion 24 is a portion that functions as a cut line between the lid portion 22 and the locking portion 26, and is separated from the cutting portion of the lid portion 22 and the locking portion 26 and between the lid portion 22 and the locking portion 26. And a plurality of small resin connecting portions that are broken when opened.

  A plurality of retaining pieces 29 project from the inner side of the locking portion 26, and when they are opened, the retaining pieces 29 come into contact with the collar portion 17 formed on the neck portion 16 to be retained in the axial direction. When the rotation is applied to the resin cap 20, the cutout portion 24 is broken and the lid portion 22 and the locking portion 26 are separated. The retaining piece 29 protrudes obliquely upward inside the locking portion 26 so as to be elastically deformed. When the resin cap 20 is assembled, the retaining piece 29 is elastically deformed and exceeds the flange portion 17. As a result, the lower surface of the flange portion 17 and the retaining piece 29 are engaged with each other and are rotatably held in the locking portion holding groove 13.

  In general, the resin cap 20 is formed by injection molding using a mold, and a plurality of the caps formed in one mold are individually separated and then filled with a liquid as a content. Each resin cap 20 is pressed and fitted from the axial direction of the neck portion 16. At this time, the retaining piece 29 inside the locking portion 26 is elastically deformed and pushed over the flange portion 17, and the locking portion 26 is held in the locking portion holding groove 13.

  The resin bottle container 10 of the present embodiment is formed with a protruding portion 30 that protrudes radially outward on the outer peripheral surface of the locking portion 26 that is prevented from coming off when opened. The protruding portion 30 is a member formed by expanding a part of the locking portion 26 radially outward from the normal annular shape, and is formed of the same resin at the same time as the resin cap 20 is formed. As an example, the protruding portion 30 is formed to have the same thickness as the portion of the locking portion 26 where the protruding portion 30 is not formed. On the side surface of the projecting portion 30, a ridge portion 32 is formed as a jagged portion on the surface. The shape of the side wall portion rising vertically from the peripheral surface of the locking portion 26 and continuing to the ridge portion 32 of the protruding portion 30 is the same as that of the locking portion 26. It can be made thinner.

  In this embodiment, as shown in FIG. 3 and FIG. 4, in the region between one retaining piece 29 inside the locking portion 26 of the resin cap 20 and the retaining piece 29 adjacent thereto, radially outward. It forms so that it may swell, and in this embodiment, it forms so that it may swell in four directions apart by an angle of 90 degrees of the central angle. Each projecting portion 30 is connected to the lower end portion of the lid portion 22 via the cutout portion 24 on the distal end side, and is provided with an inclination so that the diameter is slightly widened on the proximal end side. By using the projecting portion 30 with the bottom expanded in this way, when opening the resin bottle container 10, the user turns the resin cap 20 as a whole while putting his / her finger on the projecting portion 30. In particular, the projecting portion 30 is located farther from the rotation axis than the outer peripheral surface 21 on which the ridge of the lid portion 22 is formed, and the force for rotating the resin cap 20 can be increased due to the principle of leverage. At the same time, the user can rotate the outer peripheral surface 21 of the lid portion 22 of the resin cap 20 in the same manner as a conventional cap, and force is applied to the protruding portion 30. However, the resin cap 20 can be easily opened.

  Further, as in the present embodiment, the resin cap 20 itself can be easily molded by providing the protrusion 30 with an inclination so that the diameter is slightly widened on the proximal end side. That is, when the resin cap 20 is formed by injection molding, the male mold is pulled in the axial direction of the cap when the mold after injection is separated, but the diameter of the protruding portion 30 slightly increases on the proximal end side. When the cap is provided with an inclination as described above, the cap can be easily separated from the mold, and there is no need for a wraparound portion of the mold or a movable member inside the mold. Very advantageous.

  The resin cap 20 according to the present embodiment has been described as an example in which four protruding portions 30 are formed on the outer peripheral surface of the locking portion 26 so as to protrude radially outward, but the number thereof may be one, The number may be two, three, or five to twelve other than four. Moreover, about the shape, although the example provided with inclination so that a diameter may spread a little on the base end side was demonstrated, if it is a member of the shape which protrudes on the outer peripheral surface of the other latching | locking part 26 in the radial direction outer side Other shapes can also be used. In addition, the projecting portion 30 has been described as being integrally formed simultaneously with the locking portion 26, but it may be constructed by a construction method in which different members are combined later, or by another material such as two-color molding. Is also possible.

  FIG. 5 is a side view of the protruding portion 30 formed on the outer peripheral surface of the locking portion 26. On the side surface of the projecting portion 30, a ridge portion 32 is formed as a jagged portion on the surface. The intervals between the jagged portions of the ridge portion 32 can be equal or can be partially changed. FIG. 6 shows a modified example of the resin bottle container 10 according to the embodiment. In the vicinity of the projecting portion 40, a cutout portion 44 that can divide the ring of the locking portion 42 is formed. This is advantageous when the formed locking portion 42 is broken at the cutout portion 44 and only the container forming material such as polyethylene terephthalate resin is recycled. Even when the cut portion 44 is broken, a force can be easily applied by placing a finger on the protruding portion 40.

  FIG. 7 shows a cross-sectional shape of the protruding portion 50 formed on the outer peripheral surface of the locking portion 52, and one side has a side wall 54 rising from the outer peripheral surface of the locking portion 52, as viewed from the bottom surface side. It is also possible to form the protruding portions 50 having different shapes in the horizontal cross section. Further, the apex and ridge line of the protruding portion 50 may be rounded so as not to impair the degree of the user's finger.

Since the resin bottle container of the present embodiment has the protruding portion 30 on the outer peripheral surface of the locking portion 26 of the resin cap 20, the user can easily open the cap 20 itself. Even an elderly person with weak power can open the cap without relying on the help of others. In addition, depending on the shape of the protruding portion, it can be applied to a mass-produced resin cap, contributing to a reduction in product cost.

  In the present embodiment, the protruding portion has been described as being formed by protruding resin from the outer peripheral surface of the locking portion, but a recess is formed in a part of the outer peripheral surface of the locking portion. Relative protrusions can be formed, and uneven surfaces that increase the friction of the peripheral surface of the locking part can be formed so that the user can easily operate with fingers. It is. Further, the upper end portion of the projecting portion does not necessarily face the cut-out portion, and only the projecting portion can be configured to change the hardness of the resin to the locking portion.

DESCRIPTION OF SYMBOLS 10 Resin bottle container 12 Resin bottle 13 Locking part holding groove 14 Container main body part 15 Cascade bottom part 16 Neck part 17 Collar part 18 Thread part 19 Mouth part 20 Resin cap 21 Outer peripheral surface 22 Lid part 24 Cut part 26 Engagement Stop part 28 Thread part 29 Retaining piece 30 Projection part 32 Ridge part 40 Projection part 42 Locking part 44 Cutout part 50 Projection part 52 Locking part 54 Side wall

Claims (8)

A resin container having a hollow container main body that can store liquid, and a neck that protrudes from a part of the container main body and has a threaded portion on the outer side and the inside serves as a flow path for the liquid;
A lid portion having a threaded portion to be engaged with the threaded portion on the outer side of the neck portion of the resin bottle, and a lid portion disposed on the proximal end side of the neck portion and connected to the lid portion through a cutout portion when not opened. And a resin bottle container having a resin cap and a locking portion that is separated from the lid portion by breaking the cut portion when opened,
A resin bottle container having a protruding portion protruding radially outward in the engaging portion of the resin cap. 2. The resin bottle container according to claim 1, wherein the locking portion of the resin cap is an annular member having a predetermined thickness, and a retaining piece projects from the inside of the annular member. At the time of opening, the retaining piece comes into contact with the collar formed on the neck portion of the resin bottle to be locked in the axial direction, the cut portion is broken and the lid portion and the locking portion are separated. A resin bottle container characterized by that. 3. The resin bottle container according to claim 2, wherein the retaining piece is composed of a plurality of projecting pieces spaced apart from each other, and one or a plurality of the projecting portions are formed in the spaced regions of the plurality of projecting pieces. A resin bottle container. 3. The resin bottle container according to claim 2, wherein the protruding portion has a thickness comparable to that of the locking portion. 3. The resin bottle container according to claim 2, wherein the resin cap is integrally formed including the protruding portion. 3. The resin bottle container according to claim 2, wherein a ridge portion is formed on a surface of the protruding portion. The resin bottle container according to claim 2, wherein a breakable portion that can be broken similarly to the cutout portion is formed on the side portion of the protruding portion, and the broken portion is broken after the container is opened. A resin bottle container, wherein the locking portion is detached from the neck portion of the resin bottle. A lid portion having a threaded portion that is screwed into a threaded portion formed on the outer side of the neck portion of the resin bottle, and a lid portion disposed on the proximal end side of the neck portion and connected to the lid portion through a cutout portion when not opened. A resin cap having a locking portion that is separated from the lid portion by breaking the cut portion when opened, and the locking portion has a protruding portion that protrudes radially outward. Made of cap.