JPH037311Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an inner stopper that is attached to a bottle containing edible oil, soy sauce, sauce, etc. and guides the dispensing.

[Prior Art] Various types of inner stoppers have been devised to be attached to the mouths of bottle containers containing edible oil, soy sauce, sauces, etc. to guide pouring, but conventionally a structure such as the inner stopper 101 shown in FIG. 5 has been devised. Those made of flexible synthetic resin were common. That is, the inner stopper 101 is integrally formed with a spouting guide tube 102 having an axial flow path inside and a partition wall 104 that closes this flow path 103, and the partition wall 104 has a score of 105 to provide easy opening. and a pull ring 106, and when the pull ring 106 is pulled, the partition wall 104 is torn open and the content can be poured out from the spout 107 at the upper end of the spouting guide tube 102, and the dripping liquid after dispensing can be removed. A receiving groove 108 for receiving the liquid is formed on the outer periphery of the spouting guide tube 102, and dripping liquid flows around this receiving groove 108 and flows into the spouting guide tube 102.
After going around half the outer circumference of the spout 107, the liquid passes through the notch 110 formed in the spout guide tube 102 on the opposite side of the spout 107, returns to the flow path 103 inside the spout guide tube 102, and circulates into the container. It is configured.

[Problems to be solved by the invention] Although such an inner stopper 101 is excellent in that it has both easy opening properties and measures against dripping, the spouting cylinder part 102
Since a notch 110 is formed on one side of the
During the production stage, a portion of another inner stopper may enter the notch 110 and become entangled with the ripple ring 106, which obstructs the production line, causing pinholes to occur in the score 105. In addition, the strength of the pouring guide tube 102 differs significantly depending on the position on the circumference, making it difficult to handle, and the receiving groove 108 is also difficult to handle in terms of appearance.
is exposed at the notch 110, which is undesirable.
There are other problems.

To solve these problems, instead of forming the notch 110 in the spout tube 102, a hole 110a is formed in the base of the spout tube 102a, as in the inner stopper 101a shown in FIG. There should be no cut on the upper end circumference of the portion 102a, and dripping liquid should be removed from the receiving groove 10.
It is conceivable that the structure should be such that it returns to the flow path 103a from the hole 110a from the hole 110a.

In fact, the inner plug 101a has already been proposed in Utility Model Application Publication No. 26078 of 1962, but when attempting to produce the inner plug 101a with such a shape by injection molding, the mold of the hole 110a portion There was a problem in that it was extremely difficult to punch out, and the upper part of the hole 110a was pulled upward by the protrusion of the mold corresponding to the hole 110a, resulting in tearing.

This invention was made in view of the above circumstances, and combines easy opening and dripping prevention.
In addition, since there is no cut at the upper end of the spouting cylinder, there are no problems such as pinholes caused by intertwining of the inner plugs that enter the cut, and the spouting cylinder has almost uniform strength over the entire circumference. The object of the present invention is to provide a container stopper that is easy to handle, has an excellent appearance, and can be easily cut out.

[Means for solving the problem] In response to this purpose, the container stopper of this invention has the following features:
It is a container stopper made of flexible synthetic resin that is attached to the nozzle part of the container and guides the pouring of the content liquid, and is approximately cylindrical in shape and has a spout formed outwardly on one side of the upper end. A spouting cylinder part having a liquid recovery hole penetrating the inner and outer surfaces at the lower side opposite to the spout with respect to the axis, and a liquid collection hole having a cylindrical shape coaxial with the spouting cylinder part and extending around the outside of the spouting cylinder part. a liquid receiving wall that cooperates with the ejecting tube to form a groove communicating with the liquid recovery hole; It is characterized in that its wall thickness is smaller than that of other circumferential portions at the same height on the spouting cylinder, monotonically decreases downward, and its inner surface is approximately vertical.

[Function] The wall thickness of the portion of the spout tube near the upper hole edge of the liquid recovery hole is smaller than that of the other circumferential portion at the same height of the spout tube, and decreases toward the bottom. ,
Moreover, since the inner surface is almost vertical, if the molding mold is divided into an inner surface and an outer surface and a protrusion corresponding to the liquid recovery hole is provided on the outer mold, the amount of protrusion can be made smaller than before. If the inner mold is removed and then the outer mold is removed, as the outer mold rises, the thinly molded resin will flex and deform and escape inward. So,
The edge of the liquid recovery hole can be cut out without tearing.
That is, the container stopper configured in this manner facilitates mold removal during injection molding.

Since there is no cut in the upper end of the spouting tube formed in this way, troubles caused by intertwining of the inner stoppers with each other due to entering into the cut during the production stage can be prevented.

The shaped container stopper is attached to the nozzle portion of the filled container.

When using the contents, tilt the container and pour out from the spout. After pouring, the contents adhering to the spout enter the groove formed by the spout tube and the liquid receiving wall, flow downward in the groove, reach the liquid recovery hole, and flow from the liquid collection hole into the inside of the spout tube. It will be collected by the person.

[Example] Hereinafter, details of this invention will be explained with reference to drawings showing an example.

In FIGS. 1, 2, and 3, 1 is the inner stopper of the container, and as shown in FIG. 3, the nozzle 3 of the bottle 2
It is used by being fitted into the Container inner stopper 1
is made of flexible synthetic resin and includes an inner plug body 4 and a cover cap 5.

The cover cap 5 is connected to the inner stopper main body 4 via a hinge part 6, and rotates about the hinge part 6 to cover the upper end of the inner stopper main body 4 as shown in FIG. 3, and also as shown in FIGS. It can be opened as shown.
The hinge part 6 is constructed by making the inner plug main body 4 and the cover cap 5 integrally molded, and by making that part thinner to provide sufficient flexibility.

The inner stopper main body 4 has a pouring cylinder part 7. Pour cylinder part 7
It has a cylindrical shape, is open at the upper end, and forms an expanded portion 10 that expands outward in the shape of a morning glory over its entire circumference. This is greatly different from the conventional method in that the upper end of the spouting cylinder part 7 has a continuous annular shape.

The expanded portion 10 has the same shape all around, but one side is used as the spout 8.

On the other hand, the lower end of the pouring cylinder part 7 is closed by a partition wall 9. A score 11 for providing easy opening is formed around the partition wall 9, and a pull ring 12 is formed integrally with the partition wall 9 inside the score 11 via a support 13.

The spouting cylinder part 7 has a liquid recovery hole 14 penetrating its inner and outer surfaces at the lower part on the opposite side of the column 13 with respect to its axis. The liquid recovery hole 14 is for recovering the liquid dripping outside the spout 8 into the container.
The lower hole edge of is defined by the upper surface of the partition wall 9.

The upper hole edge 15 of the liquid recovery hole 14 and the wall 16 in the upper vicinity thereof are configured as follows in order to enable cutting out of injection molding.

That is, the inner surface 17 of the wall 16 hangs down vertically to the upper hole edge 15, and this extends to the left and right walls 18 of the wall 16.
This is in sharp contrast to the inner surface 19 of which slopes downwardly and inwardly to maintain a substantially uniform wall thickness with the outer surface 21.

Most of the outer surface of the wall 16 is flush with the outer surfaces 21 of the left and right walls 18. That is, it slopes inward toward the bottom, and the thickness of the wall sandwiched between it and the vertical inner surface 19 is gradually reduced. Only the hole edge 22 immediately adjacent to the upper hole edge 15 has an inclined surface 20 that goes inward sharply from the left and right outer surfaces 21, and meets the rear inner surface 19, which rapidly decreases the wall thickness as it moves downward, to form the upper hole. Rim 15
is formed.

In this way, in the container inner stopper 1, the wall thickness of the upper hole edge 15 and the wall 16 in the upper vicinity thereof always decreases downward, but the wall thickness of the wall 16 only needs to decrease monotonically, i.e. There may be a portion where the wall thickness neither increases nor decreases as you move downwards, and the wall thickness continues downwards with only a decrease but no increase, until an almost vertical inner surface has an inwardly sloping outer surface. It is sufficient if the meeting wall thickness is 0 and forms the upper hole edge.

The inner stopper main body 4 includes a liquid receiving wall 23. The liquid receiving wall 23 goes around the outside of the spouting cylinder part 7 and has a coaxial cylindrical shape with the spouting cylinder part 7, and cooperates with the spouting cylinder part 7 to form a groove 24 communicating with the liquid recovery hole 14. . A groove floor 25 of the groove 24 forms a downwardly sloping surface going around the outside of the spouting cylinder and toward the liquid recovery hole 14.

The inner plug main body 4 has an annular groove 26 with an open lower end for fitting into the container nozzle part 3 at the lower part. Groove 2
The groove floor wall 27 of No. 6 corresponds to the lower end of the liquid receiving wall 23, and the container nozzle portion 3 inserted between the coaxial cylindrical fitting outer wall 28 and the fitting inner wall 31 hanging from the groove floor wall 27. It is configured to fit into this by pressing it.

A mold 40 for molding the container inner stopper 1 constructed in this manner by injection molding can be constructed as shown in FIG. 4.

That is, the mold 40 consists of an upper mold 40a and a lower mold 40b.
9, a mold 42 between the pull ring 12 and the spouting tube 7, a mold 43 between the spouting tube 7 and the liquid receiving wall 23, and a mold 4 inside the cover cap 5.
4, and a mold 45 for the outer surface of the entire container inner stopper; a mold 47 for the outer surface of the top plate of the cover cap 5, a mold 51 for the outer surface of the entire container inner stopper, and a mold 52 for the lower end surface of the fitting outer wall 52 (for knockout). .

Among these, the mold 43 is significantly different from the mold of the conventional container stopper 101. In the mold 43, a protruding portion 43a corresponding to the liquid recovery hole 14 protrudes slightly inwardly than a portion 43b corresponding to the upper wall 16, so that removing the protruding portion 43a from the mold becomes a problem. The upper end surface of the protruding portion 43a forms an inclined surface 43c that slopes upwardly and outwardly in accordance with the shape of the inclined surface 20 of the hole edge 22 of the spouting cylinder.
3b also forms an upward slope that slopes outward but never inward. Therefore, when the mold 42 on the adjacent inner side rises and the mold 43 starts to rise while being separated from the cylindrical part 7, the inclined surfaces 43c and 43b rise accordingly, thereby causing the inner stopper 1 of the container to rise. The hole edge 22 and the wall 16 are deflected inward, and the slope 43c rises while sliding on the slope 20 of the hole edge 22, until the protruding portion 43a touches the wall 1.
6. As the mold 43 rises, the expanded portion 10 at the upper end of the cylindrical portion 7 is deflected and deformed sequentially from the bottom to the inside, and finally the mold 43 is completely removed upwards, completing the forced extraction. be.

[Effects of the invention] As described above, the container stopper of the invention can be easily removed from the mold. Further, as in the embodiment, the portion 43b can be configured to have a slight thickness while the tip 43c is steeply inclined, so that a liquid recovery hole with an accurate outline can be formed. In addition, since the container inner stopper 1 has no cut at the upper end of the spouting tube 7, the strength is almost uniform over the entire circumference, making it easy to handle and having a good appearance, and there are no problems such as pinholes caused by intertwining of the inner stoppers with each other.

The container inner stopper 1 is inserted into the partition wall 9 by pulling the pull ring 12.
It can be easily opened by cutting at the score 11, and dripping liquid adhering to the outside of the spout 8 passes through the groove 24 and is collected into the container from the liquid recovery hole 14, providing both easy opening and drip prevention. .

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing a container stopper according to an embodiment of the invention, FIG. 2 is a plan view of the container stopper shown in FIG. 1, and FIG. 3 is a top view of the container stopper shown in FIG. 1. 4 is a vertical sectional view showing the mold of the container inner stopper shown in FIG. 1, FIG. 5 is a longitudinal sectional view showing the conventional container inner stopper, and FIG. 6 is a vertical sectional view showing another conventional container inner stopper. FIG. 2 is an explanatory longitudinal cross-sectional view showing the inner stopper of the container. 1...Container inner stopper, 2...Bottle, 3...Nozzle, 4...Inner stopper body, 5...Cover cap, 6
... Hinge part, 7 ... Spout cylinder part, 8 ... Spout, 9
...Partition wall, 11...Score, 12...Pull ring, 13...Strut, 14...Liquid collection hole, 15...
Upper hole edge, 16... Wall, 17... Inner surface, 18...
Wall, 19... Inner surface, 20... Inclined surface, 21... Outer surface, 22... Hole edge, 23... Liquid receiving wall, 24...
...Groove, 25...Groove floor, 26...Groove, 27...Groove floor, 28...Fitting outer wall, 31...Fitting inner wall, 40
...Mold, 40a...Upper mold, 40b...Lower mold, 4
2, 42, 43, 44, 45, 46, 47, 4
8,51,52...Mold, 101...Inner stopper, 10
2...Liquid guide section, 103...Liquid guide wall, 104...
... Weak part for cutting, 105 ... Partition wall, 106 ...
Pull tab, 107... Outer hem, 108... Inner hem, 109... Liquid receiver, 110... Notch, 1
11...Groove, 112...Container, 113...Nozzle portion, 114...Cover cap.

Claims (1)

[Scope of utility model registration request] A container stopper made of flexible synthetic resin that is attached to the nozzle part of the container and guides the pouring out of the content liquid,
a spouting cylinder having a substantially cylindrical shape and having a spout projecting outward on one side of the upper end and a liquid recovery hole penetrating through the inner and outer surfaces below the spout and the opposite side with respect to the axis; a liquid receiving wall that has a coaxial cylindrical shape with the ejecting cylinder part, goes around the outside of the ejecting cylinder part and cooperates with the ejecting cylinder part to form a groove communicating with the liquid recovery hole; The wall thickness of the upper edge of the liquid recovery hole and the upper portion thereof in the wall of the cylindrical portion is smaller than that of other circumferential portions at the same height position on the spouting cylindrical portion, and decreases monotonically toward the bottom. Moreover, the container inner stopper is characterized by an almost vertical inner surface.