JP3208128B2 - Stopper type dispensing cylinder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has an outer cylinder and an inner cylinder having the same axis, and press-fits the inner and outer cylinders into the inner and outer surfaces of a circular opening of the packaging container to be attached to the packaging container. The present invention relates to a stopper-type plastic dispensing cylinder.

[0002]

2. Description of the Related Art A stopper type plastic dispensing cylinder P is shown in FIG.
6. As shown in FIG. 17, the bottom surface of the upper cylinder 2 in which the cap 1 is fitted is closed with a bottom plate 3, a half-cylindrical tongue 4a is provided on the bottom plate 3, and a pull-top 4 is provided in the tongue 4a.
In general, the pull-top 4 is pulled, and the center of the bottom plate 3 is removed through the cut groove 5 so that the bottom plate 3 can be poured out. The bottom surface of the bottom plate 3 has inner and outer cylinders 6 and 7 having the same axis. As shown in FIG. 18, the inner and outer cylinders 6, 7 are press-fitted into the inner and outer surfaces of the circular opening B of the packaging container (from (a) to (b) in FIG. 18), so that the discharging tube P is opened. Attached to

As shown in FIG. 18 (b), the spouting tube P has a ridge 8 on the outer inner surface of the inner and outer cylinders 6 and 7 and a ridge 10 on the mouth B.
By locking (fitting) into the (groove), it is prevented from coming off and exhibits a packing effect.

In this spouting tube P, when the packaging container is made of plastic, the inner and outer surfaces of the mouth portion B are manufactured with high accuracy, so that if the inner tube 6 is pressed into the mouth portion B exactly, a sufficient packing effect can be obtained. There is little risk of leakage. However, when the packaging container is made of glass, the molding accuracy of the inner and outer surfaces, particularly the inner surface of the mouth portion B is low due to the molding of the glass container, and a sufficient packing effect can be obtained only by press-fitting the inner cylinder 6 into the mouth portion B. Since the outer cylinder 7 cannot be obtained, the outer cylinder 7 is press-fitted exactly to the outer surface of the mouth portion B, and the press-fitting obtains a packing effect so as to reliably prevent leakage.

[0005] In recent years, it has been required to recycle this kind of dispensing cylinder and packaging container. At this time, in order to facilitate recycling, the dispensing cylinder and packaging container having different materials must be disposed separately. Is required. For this reason, the dispensing cylinder P
Is preferably easily removable from the mouth B of the packaging container by hand.

However, as described above, the spout cylinder P attached to the mouth B of the glass packaging container is easily removed by hand because the inner and outer cylinders 6, 7 are both press-fitted into the mouth B. Can not do. This kind of dispensing tube P is attached to a packaging container such as a seasoning liquid or edible oil, and is often used in ordinary households. After use, it is important that it can be easily removed by hand at home. It is.

Under such a demand, Japanese Utility Model Laid-Open No. 4-1183 has been proposed.
No. 48 gazette, the inside of the groove is formed in the lower peripheral portion of the ridge 8, and the outer cylindrical portion below the groove is removed through the inside of the groove.
The idea of removing the dispensing cylinder P from the container is shown.

[0008] However, the technique described in this publication has only a small portion of the outer cylinder below the ridge 8, and has little effect of loosening the locking force between the ridge 8 of the pouring cylinder and the ridge 10 of the mouth piece. Therefore, it is not easy to remove the ejection tube P.

For this reason, conventionally, as shown in FIGS. 19 and 20, a pull 12 is provided on the lower edge of the outer cylinder 7, and the pull 12
A notch 12a is formed inside the outer cylinder 7 at the base of the base, and a groove 23 is formed from the notch 12a in the diagonally upper circumferential direction on the inner surface of the outer cylinder 7, and the groove 23 is formed until the groove 23 passes through the ridge 8. Then, the puller 12 is pulled, and the thinned portion of the groove 23 is torn to partially eliminate the press-fitting portion.
In which the press-fitting is loosened to remove the ejection tube P.

[0010]

As shown in FIG. 19, the spouting tube P shown in FIG. 19 has a spout (semi-cylindrical tongue piece 4a) on the upper side, and the cap 1 is also tall. 18B, when a lateral external force is applied as shown by an arrow in FIG. 18B, the lateral displacement force acts on the outer cylinder fitting portion b as a fulcrum, and this force becomes a large force for removing the pouring cylinder P from the mouth B. In order to resist this force, in this type of conventional dispensing tube P, the fulcrum “b” of the fitting portion of the outer tube 7 is held at a position below the fitting portion of the container mouth B to receive a large force. In order to obtain a sufficient packing effect, the thickness of the outer cylinder 7 reaching the ridge 8 is increased.

In such a dispensing cylinder P, the groove 23
When forming, to obtain a smooth tearing effect,
It is necessary to make the groove 23 deep and make it thin enough.
Inevitably, the protruding portion 23a through which the groove 23 passes is deepened, and the packing effect is not obtained, and the liquid leaked from the inner cylinder 6 and the inner surface of the mouth B leaks out from the groove 23 of the protruding portion 23a. (See FIG. 20). For this reason, in the glass packaging container, there is a possibility that leakage may occur between the inner cylinder 6 and the inner surface of the mouth B due to the low accuracy of manufacturing the inner surface of the mouth B. P cannot be used.

SUMMARY OF THE INVENTION It is an object of the present invention to make it possible to easily remove a fitting container from its mouth without lowering the fitting strength and leaking liquid under the above circumstances.

[0013]

In order to solve the above-mentioned problems, the present invention first forms a tear groove extending from the lower edge to a ridge on the inner surface of the outer cylinder and extending along the ridge over a half circumference. At the same time, a tear groove is formed across the tear groove continuously across the lower surface of the ridge. By omitting the portion, the locking force of the ridge can be reduced. Due to these deficiencies, the fitting force is reduced, and the press-fitting portion is partially eliminated, so that the press-fitting of the outer cylinder is loosened and the ejection cylinder is easily removed. At this time, since the tearing groove only crosses the lower surface of the ridge, lack of the pressure contact portion of the ridge does not occur, and therefore, the product does not leak (see FIGS. 6 and 9 of the embodiment). .

Next, according to the present invention, a flange portion is formed on the outer side of the inner ridge which is engaged with the ridge at the opening edge of the mouth portion.
The upper part of the outer cylinder can be made thinner to make it easier to deform, and the flange part compensates for the lack of strength of the fitting part due to the thinner part, and the lower part of the outer cylinder is brought into contact with the mouth. Thus, the fitting strength is ensured, that is, even if the force in the direction of the arrow shown in FIG.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is as follows.
Close the bottom of the upper cylinder with a bottom plate that can be opened with a pull-top system,
An outer cylinder and an inner cylinder are provided with the same axis at the lower edge of the upper cylinder, and the inner rim of the outer cylinder is passed over the ridge of the opening edge of the packaging container, and the inner and outer cylinders are rounded at the circular opening of the packaging container. In the stopper-type plastic dispensing cylinder P which is press-fitted into the inner and outer surfaces of the outer cylinder and attached to the packaging container, the inner surface of the outer cylinder extends from the lower edge to the inner ridge, and extends along the ridge more than half a circumference. After extending, the tear groove is formed across the lower surface of the ridge, and at the tip of the tear groove, a tear groove is formed further from the lower edge of the outer cylinder to the ridge and across the lower surface of the ridge. The configuration that has been adopted can be adopted.

In this configuration, when the lower part of the outer cylinder is cut off along the tear groove, the cut piece is formed more than half the circumference of the outer cylinder, and then pulled slightly upward, thereby being torn across the ridge. Accordingly, the press-fitting of the outer cylinder is loosened, and further, by pulling up the tear piece, the spouting cylinder can be removed from the mouth of the packaging container. At this time, since the tearing piece has a length that can be sufficiently grasped, a sufficient removing force can be applied.

In the above embodiment, instead of traversing the lower surface of the ridge of the tear groove over a half circumference and forming another tear groove, a tongue piece connected to the flange portion in the circumferential direction of the tear groove over the half circumference. Is formed, and a tear groove crossing the lower surface of the ridge from the tear groove is formed on both inner surfaces of the tongue piece.

In this configuration, the tongue piece is pulled up to remove the spout cylinder. At this time, if the tongue piece is located in the middle of the lower portion of the outer cylinder where the tongue piece is missing, the removal force acts in the middle of the portion where the fitting force is loosened, so that the removal operation is easy.

In each of the above embodiments, the outer cylinder has a flange formed outward from the inner ridge.
A skirt portion is formed downward from the outer edge of the flange portion, and the lower edge of the skirt portion is to come into contact with the mouth of the packaging container, and each of the tear grooves crosses the lower surface of the inner ridge through the flange. It can be.

[0020]

FIG. 1 to FIG. 6 show an embodiment of the present invention. This embodiment relates to the above-mentioned pull-top type plastic dispensing tube P. Is closed by a bottom plate 3, a pull-top 4 is provided on the bottom plate 3, the pull-top 4 is pulled, and the center of the bottom plate 3 is removed through a cut groove 5 so that the bottom plate 3 can be poured out. It has inner and outer cylinders 6 and 7 having the same axis.

The outer cylinder 7 bulges from the lower edge of the upper cylinder 2 in an arc with a substantially uniform thin thickness (substantially the same as that of the inner cylinder 6).
The ridge 8 is formed on the inner surface of the ridge 8 and extends over the ridge 10 at the opening edge of the circular opening B of the packaging container. Thus, a skirt portion 7b is formed downward from the outer edge of the flange portion 7a. A ridge 9 is formed on the inner surface of the lower edge of the skirt portion 7b so as to fit into the groove 11 of the mouth portion B, and the inner and outer cylinders 6, 7 are pressed into the mouth portion B as shown in FIG. As a result, the ridge 8 rides over the mouth ridge 10 and is locked to achieve a packing effect, and the ridge 9 is locked in the groove 11 so that the ejection tube P is stably held at the mouth B. Mounted.

A handle 12 is provided on the upper part of the outer cylinder 7 (skirt part 7b). After reaching the base of the handle 12 from the lower edge on the inner surface of the outer cylinder 7, it is more than half a circumference to the flange part 7a, for example, around the circumference. A tear groove 13 having a V-shaped cross section extending along about 200 degrees is formed (see FIGS. 1 and 3). This tear groove 13
Extends over half a circumference and continues across the lower surfaces of the flange 7a and the ridge 8. The tip of the tear groove 13 further extends from the lower edge of the outer cylinder 7 to the flange 7a. A tear groove 16 is formed across the lower surface.

This embodiment has the above configuration. Now, when the pouring cylinder P is attached to the mouth portion B (plugged) and the puller 12 is gripped and pulled in the circumferential direction, FIG. As shown in FIG. 6, the skirt portion 7b is peeled off through the tear groove 13 for more than half the circumference. In FIG. 5A, a chain line portion is torn and is a surface (portion) a. In this state, as shown in FIG. 6, when the tearing piece T is further pulled upward, a part of the flange portion 7 a and the ridge 8 is cut off and cut off through the tearing grooves 13 and 16, and thereby, The pressure holding force decreases. 6B, the ridge 8 is detached from the ridge 10 as the tear piece T is pulled up, as indicated by a chain line from the solid line, and the pouring tube P is detached from the mouth B. At this time, the tearing piece T is long and has many gripping portions, so that it is easy to pull up.

As shown in FIG. 5B, the tear grooves 13 and 16 are formed on the lower surface of the ridge 8 continuous with the flange 7a, and a part of the lower portion of the ridge 8 is omitted. Also, since the entire circumference of the contact portion of the ridge 8 is locked (pressed) with the ridge 10, the product (liquid) in the packaging container does not leak.

FIGS. 7 to 10 show another embodiment. In this embodiment, the center of the tearing groove 13 in the circumferential direction is detoured in an inverted trapezoidal shape, and a tongue piece 14 is formed by this detour. From both ends of the tongue piece 14, a tear groove 15 having a V-shaped cross section which crosses the flange 7a and the ridge 8 is formed continuously with the tear groove 13, and the tear groove 16 is not formed.

In this embodiment, as shown in FIG.
When the user grips 2 and pulls in the circumferential direction, the skirt portion 7b is torn more than half the circumference, leaving the tongue piece 14. In this state, as shown in FIG. 10, when the tongue piece 14 is lifted upward by grasping or the like, a part of the flange 7 a and the ridge 8 is cut off and cut off through the tear groove 15, and the pressure caused by them is reduced. The holding power decreases. As the tongue piece 14 is pulled up, the ridge 8 comes off from the ridge 10, and the pouring tube P comes off from the mouth B.

As shown in FIGS. 9 and 10, the tear grooves 13 and 15 are formed on the lower surface of the ridge 8 and a part of the lower portion of the ridge 8 is omitted, as in the above embodiment. Since the contact pressure portion is locked (pressed) on the ridge 10 of the mouth portion B on the entire periphery where the contact pressure portion is not missing, the product in the packaging container does not leak.

In the above two embodiments, the outer cylinder 7 (the skirt 7
The lower end ridge 9 of a) is locked in the groove 11 of the mouth B. However, as shown in FIG. 11, even if the lower edge 7b of the skirt 7a just contacts the mouth B, the external force indicated by the arrow is applied. Receiving tube P can be prevented from coming off unexpectedly. Therefore, ridge 9
Is also included in the “contact” in the claims.
At this time, the groove 11 of the mouth B can be omitted as shown in the figure. The cross-sectional shape of the grooves 13, 15, 16 is not limited to the V-shape, and may be any shape such as a U-shape as long as it can be torn.

The tearing groove 13 and the tongue piece 14 can be appropriately deformed without departing from the function of the present invention.
Each example is shown in FIGS. In FIG. 12, the tab 12 is provided at the top of a portion surrounded by a tear groove 13 extending from the lower edge of the outer cylinder 7 and a tear groove 13 in the circumferential direction. When,
The base 12b connected to the outer cylinder 7 bends to open the abutting portion of the two grooves 13 and 13 and thereafter tears through the groove 13. FIG. 13 shows a handle 12 protruding from the outer cylinder 7.
Is formed in the outer cylinder 7, a notch 16 continuous with the groove 13 is formed in the outer cylinder 7, and a part of the outer cylinder 7 is used as the handle 12. The pull 12 is pulled, and the groove 13 is formed without the stopper 16 a. Tear through.

FIG. 14 is a modification of the embodiment of FIG.
The tongue piece 14 is formed at the rear of the tearing groove 13. In FIG. 15, the tongue piece 14 is not formed by tearing by the handle 12, but a notch 17 is formed in the lower edge of the outer cylinder 7, and the tongue piece 14 is pulled up through the notch 17 and the groove 15.

[0031]

As described above, according to the present invention, a sufficient packing effect can be maintained without lowering the fitting strength, and it can be easily removed from the packaging container after use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an attached state of an embodiment.

FIG. 2 is a cross-sectional view of the same mounting state.

FIG. 3 is a diagram illustrating the operation of the embodiment.

FIG. 4 is a sectional view for explaining the operation.

5A is a perspective view of a main part of the embodiment, and FIG. 5B is a cutaway perspective view of the main part.

FIG. 6A is a perspective view for explaining the operation, and FIG.

FIG. 7 is a perspective view showing a mounted state of another embodiment.

FIG. 8 is a diagram illustrating the operation of the embodiment.

FIG. 9 is a cutaway perspective view of a main part of the embodiment.

FIG. 10A is a perspective view for explaining the operation of the embodiment,
(B) is a sectional view of the main part of the same.

FIG. 11 is a cross-sectional view showing a mounted state of another embodiment.

FIG. 12 is a perspective view of another embodiment.

FIG. 13 is a perspective view of another embodiment.

FIG. 14 is a perspective view of another embodiment.

FIG. 15 is a perspective view of another embodiment.

FIG. 16 is a perspective view of a conventional example.

FIG. 17 is a cut front view of the conventional example.

FIG. 18 is an explanatory view of an action of attaching the dispensing cylinder to the mouth of the packaging container.

FIG. 19 is a perspective view of a conventional example.

FIG. 20 is a perspective view of a main part of the conventional example.

[Explanation of symbols]

 B Outlet of packaging container P Discharge cylinder T Tear piece 1 Cap 2 Upper cylinder 4 Pull top piece 6 Inner cylinder 7 Outer cylinder 7a Flange 7b Skirt 8 Inner ridge of outer cylinder 9 Lower rim of outer cylinder 10 Mouth projection Article 11 Locking groove 12 Puller 13, 15, 16 Tearing groove 14 Tongue piece

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 47/12 B65D 47/36

Claims (4)

(57) [Claims] 1. A bottom surface of an upper cylinder 2 is closed by a bottom plate 3 which can be opened by a pull-top system, and a lower edge of the upper cylinder 2 is coaxial with an outer cylinder 7.
And an inner cylinder 6, and the inner ridge 8 of the outer cylinder 7 passes over the ridge 10 at the opening edge of the opening B of the packaging container, and the inner and outer cylinders 6, 7 are formed on the inner and outer surfaces of the circular opening B of the packaging container. Of the stopper-type plastic dispensing tube P which is press-fitted into the packaging container and is attached to the packaging container. After extending, the tear groove 13 is formed across the lower surface of the ridge 8, and the tip of the tear groove 13 further extends from the lower edge of the outer cylinder 7 to the inner surface ridge 8. A tapping type dispensing cylinder, characterized in that a tear groove 16 is formed across the lower surface of the spout. 2. The outer cylinder 7 has a flange 7a formed outward from the inner projection 8 and a skirt 7b formed downward from an outer edge of the flange 7a. The lower edge of the inner surface of the container comes into contact with the opening B of the packaging container.
, And extends along the flange 7a for more than half a circumference, and subsequently traverses the lower surface of the flange 7a and the inner ridge 8, and the tear groove 1 at the tip of the tear groove 13.
The tapping-type dispensing cylinder according to claim 1, wherein 6 extends from the lower edge of the outer cylinder 7 to the flange 7a and crosses the lower surface of the flange 7a and the ridge 8. 3. The bottom surface of the upper cylinder 2 is closed by a bottom plate 3 which can be opened by a pull-top system, and the lower edge of the upper cylinder 2 is coaxial with the outer cylinder 7.
And an inner cylinder 6, and the inner ridge 8 of the outer cylinder 7 passes over the ridge 10 at the opening edge of the opening B of the packaging container, and the inner and outer cylinders 6, 7 are formed on the inner and outer surfaces of the circular opening B of the packaging container. Of the stopper-type plastic dispensing tube P which is press-fitted into the packaging container and is attached to the packaging container. Tear groove 1 extending
A tongue piece 14 is formed in the middle of the tear groove 13 in the circumferential direction. The tongue piece 14 is connected to the inner ridge 8, and the inner ridge 8 is formed on the inner surface on both sides of the tongue piece 14.
A tapping type dispensing cylinder characterized in that a tear groove 15 is formed across the lower surface of the spout. 4. The outer cylinder 7 has a flange 7a formed outward from the inner ridge 8, and a skirt 7b formed downward from an outer edge of the flange 7a. The lower edge of the upper packaging container comes into contact with the mouth portion B of the upper packaging container, and the tear groove 13 along the inner protruding ridge 8 reaches the flange portion 7a and extends along the flange portion 7a more than half a circumference, The tapping-type spout cylinder according to claim 3, wherein the tear grooves 15 on both sides of the tongue piece 14 cross the lower surface of the ridge 8 from the flange 7a.