JP6897365B2 - Bottle inner plug - Google Patents

Description

The present invention relates to a plastic inner plug used by attaching it to a plastic bottle or a glass bottle, and more particularly to an inner plug capable of easily refilling the contents.

In toiletry products such as shampoo and conditioner, when the contents in the special container are exhausted, refill products that replenish only the contents are often sold separately in order to reuse the special container.

Many refill products are stored in pouches made of flexible packaging materials, and since less material is required compared to special containers, the price can be lowered and the burden on the environment is small, so there are various products. Widely used for various products.

Products such as shampoos and conditioners are used in considerable amounts at one time, so the size of the container is also reasonable. Therefore, the diameter of the bottle becomes large, and the design of the refill container is relatively easy.

However, in the case of contents that are used in a small amount at one time, such as cosmetics, the size of the container is not so large, so the inner plug and cap must be small as such. In addition, depending on the product, an inner plug with a small spout diameter is often used so that a large amount does not come out at one time.

Therefore, when an attempt is made to insert the spout of the refill container into these small containers, there is a problem that the refill work cannot be performed unless the inner plug is removed.

The container with an inner plug described in Patent Documents 1 and 2 is a container with an inner plug that allows the inner plug to be easily removed during refilling work. In these containers, in order to facilitate the removal of the inner plug, a tapered portion is provided on the shoulder portion of the container body so that the hem portion of the inner plug covers this taper. By tightening the hem of the inner plug by hand, the entire inner plug is pushed upward so that the inner plug can be easily removed.

However, such a method of attaching / detaching the inner plug is less preferable because the fitting portion of the inner plug may be worn and loosened as the number of times of attachment / detachment is repeated, which may lead to liquid leakage or careless removal of the inner plug. It wasn't a thing. There is also a problem that the attachment / detachment of the inner plug itself is troublesome.

The inner plug of the container described in Patent Document 3 solves such a problem, and proposes an inner plug that can replenish the contents without removing the inner plug. The inner plug described in Patent Document 3 is provided with a partition wall that closes the through opening of the inner plug leaving a spout, and the partition wall opens at the time of refilling, so that the nozzle of the refill container is directly inserted into the inner plug. It is something that can be done.

In the inner plug of the container described in Patent Document 3, since the partition wall opens and closes with the fragile portion as a hinge, the fragile portion of the partition wall becomes fatigued and the closure becomes incomplete as the number of refills increases. It contains a problem.

JP-A-2007-91293 JP-A-2007-91300 Japanese Unexamined Patent Publication No. 2011-213393

The problem to be solved by the present invention can be used for a container having a small diameter, refilling can be easily performed without removing the inner plug, and even if the number of refilling is repeated, the refilling can be performed. It proposes a bottle inner plug that does not deteriorate.

As a means for solving the above problems, the invention according to claim 1 is an inner plug used by attaching to the mouth of a bottle-shaped container body, which is fitted to the mouth of the container body. It has an inner plug main body to be fixed and a cylindrical movable cylinder slidably fitted to the inner peripheral surface of the inner plug main body, and the movable cylinder has a spout at the upper end and a lower end. Is opened and fixed to the inner plug body with a rotary lock. When the movable cylinder is rotated to unlock it, and the movable cylinder is pulled out from the inner plug body and extended to the upper limit, the side of the movable cylinder is clogged. It is a bottle inner plug characterized by being provided with an injection opening into which a discharge cylinder of a replacement container can be inserted.

The bottle inner plug according to the present invention is composed of an inner plug main body that is fitted and fixed to the mouth of the container main body and a cylindrical movable cylinder that is slidably fitted to the inner peripheral surface of the inner plug main body. Therefore, when the movable cylinder is pulled out, an injection opening into which the injection cylinder of the refill container can be inserted is provided on the side surface of the movable cylinder, so that refilling is possible without removing the inner plug.

The bottle inner plug according to claim 1, wherein the outer periphery of the upper end portion of the movable cylinder is provided with irregularities that serve as clues for rotating the movable cylinder. Is.

The bottle according to claim 1 or 2, wherein the invention according to claim 3 has a stopper mechanism on the outer periphery of the lower end portion of the movable cylinder to prevent the movable cylinder from falling out of the inner plug main body. It is a stopper.

The bottle inner plug according to the present invention is composed of an inner plug main body that is fitted and fixed to the mouth of the container main body and a cylindrical movable cylinder that is slidably fitted to the inner peripheral surface of the inner plug main body. Therefore, when the movable cylinder is pulled out, an injection opening into which the injection cylinder of the refill container can be inserted is provided on the side surface of the movable cylinder, so that refilling is possible without removing the inner plug.

In addition, when refilling, it is only necessary to slide the movable cylinder without removing the inner plug, and since there are no parts that wear or get tired, it is highly durable and can be used for a long period of time. be able to.

Since the bottle inner plug is attached to the bottle body by a general fitting method, it can be used not only for plastic bottles but also for glass bottles and the like, and can also be applied to high-class cosmetics and the like.

As in the invention of claim 2, when the outer periphery of the upper end portion of the movable cylinder is provided with unevenness that serves as a clue for rotating the movable cylinder, when the movable cylinder is rotated and the lock is released. , The refilling work can be performed smoothly without slipping.

Further, as in the invention of claim 3, when the movable cylinder has a stopper mechanism on the outer periphery of the lower end portion of the movable cylinder to prevent the movable cylinder from falling out from the inner plug main body, the movable cylinder may come off when the movable cylinder is pulled out. The refilling work can be smoothly executed without any problem.

FIG. 1 is a perspective explanatory view showing an embodiment of a bottle inner plug according to the present invention, showing a state in which the bottle inner plug is attached to the mouth of a bottle-shaped container body. FIG. 2 is a schematic cross-sectional view showing the cross-sectional structure of the bottle inner plug shown in FIG. 1, showing a state in which the cap is attached. FIG. 3 is a plan explanatory view showing a state in which the bottle inner plug shown in FIG. 1 is viewed from above. FIG. 4 is a cross-sectional explanatory view showing a state in which the movable cylinder of the bottle inner plug shown in FIGS. 1 and 2 is pulled out and the injection cylinder of the refill container is inserted.

The bottle inner plug according to the present invention will be described in detail with reference to the following drawings. FIG. 1 is a perspective explanatory view showing an embodiment of the bottle inner plug 1 according to the present invention, showing a state in which the bottle inner plug 1 is attached to the mouth portion 11 of the bottle-shaped container body 10. .. Further, FIG. 2 is a schematic cross-sectional view showing the cross-sectional structure of the bottle inner plug 1 shown in FIG. 1, showing a state in which the cap 12 is attached. Further, FIG. 4 is a cross-sectional explanatory view showing a state in which the movable cylinder 3 of the bottle inner plug 1 shown in FIGS. 1 and 2 is pulled out and the injection cylinder 21 of the refill container 20 is inserted.

The bottle inner plug 1 according to the present invention is an inner plug used by being attached to the mouth 11 of the bottle-shaped container main body 10, and is fitted and fixed to the mouth 11 of the container main body 10. It is composed of 2 and a cylindrical movable cylinder 3 slidably fitted to the inner peripheral surface of the inner plug main body 2.
The movable cylinder 3 has a spout 6 at the upper end portion, and the lower end portion is open. The movable cylinder 3 is fixed to the inner plug main body 2 with a rotary lock 7, and can be pulled out from the inner plug main body 2 as shown in FIG. 4 by rotating the movable cylinder 3 to unlock the movable cylinder 3. ..

An injection opening 8 which is a notch is provided on the side surface of the cylindrical movable cylinder 3, and when the movable cylinder 3 is pulled out from the inner plug main body 2 and extended to the upper limit, the injection opening 8 is provided. It is possible to insert the injection cylinder 21 of the refill container 20 prepared separately.

As described above, in the bottle inner plug 1 according to the present invention, the refilling operation can be performed without removing the inner plug from the bottle-shaped container body 10. Further, in the refilling work, it is only necessary to pull out the movable cylinder 3 from the inner plug main body 2, and since there is no part that is worn or tired, the inner plug has a long life and can be used for a long period of time. it can.

As shown in FIG. 2, in this embodiment, the upper end portion 4 of the movable cylinder 3 is provided with a sealing ring 13 so as to surround the spout 6, and is fitted into the groove provided in the cap 12. It can be sealed.

The cap 12 is screwed into a screw provided at the mouth portion 11 of the bottle-shaped container body 10. The method of fixing the cap 12 is arbitrary.

The inner plug main body 2 and the movable cylinder 3 are fixed by a rotary lock mechanism in this example. The rotary lock mechanism may be a screw having a rotation stop mechanism, or a structure in which rotation is stopped by friction between the screws.

As shown in FIG. 3, when unevenness 5 serving as a clue for rotating the movable cylinder 3 is provided on the outer periphery of the upper end portion of the movable cylinder 3, the movable cylinder 3 is rotated to rotate the rotary lock 7. When removing, the refilling work can be carried out smoothly without slipping. Especially when the content is slippery such as milky lotion, the unevenness 5 is useful.

There are no particular restrictions on the shape of the unevenness 5, and the point is that it does not have to be a smooth cylindrical surface, and may be knurled with streaks or knurls.

Further, it is desirable to provide a stopper mechanism 9 on the outer periphery of the lower end portion of the movable cylinder 3 in order to prevent the movable cylinder 3 from falling off when it is pulled out from the inner plug main body 2. The stopper mechanism 9 is not limited to the protruding hook provided on the outer periphery of the cylinder as shown in FIG. 4, and may be any ring-shaped protrusion, but the movable cylinder 3 is inserted into the inner plug main body 2 and fitted. It must be a structure that can be combined and assembled.

As a material constituting the bottle inner plug according to the present invention, a thermoplastic synthetic resin that can be injection-molded is usually used. Specifically, thermoplastic resins such as polyethylene resin, polypropylene resin, polyethylene terephthalate resin, polyamide resin, and polyacetal resin can be used.

1 ... Bottle inner plug 2 ... Inner plug main body 3 ... Movable cylinder 4 ... Movable cylinder upper end 5 ... Concavo-convex 6 ... Injection opening 9 ... Stopper mechanism 10 ... Bottle-shaped container body 11 ... Mouth 12 ... Cap 13 ... Sealing ring 20 ... Refill container 21 ... Dispensing cylinder

Claims (3)

An inner plug that is used by attaching to the mouth of a bottle-shaped container body, and is slidable on the inner plug body that is fitted and fixed to the mouth of the container body and the inner peripheral surface of the inner plug body. It has a cylindrical movable cylinder that is fitted, and the movable cylinder has a spout at the upper end, the lower end is opened, and is fixed to the inner plug body with a rotary lock. When the movable cylinder is pulled out from the inner plug body and extended to the upper limit by rotating, there is an injection opening on the side of the movable cylinder into which the injection cylinder of the refill container can be inserted. Characterized bottle inner plug. The bottle inner plug according to claim 1, wherein the outer periphery of the upper end portion of the movable cylinder is provided with irregularities that serve as clues for rotating the movable cylinder. The bottle inner plug according to claim 1 or 2, wherein a stopper mechanism is provided on the outer periphery of the lower end portion of the movable cylinder to prevent the movable cylinder from falling out of the inner plug main body.

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